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HomeMy WebLinkAboutWPO201800088 VSMP - SWPPP 2019-07-18 F ALA COUNTY OF ALBEMARLE 4�o Department of Community Development ?: q. 401 McIntire Road,North Wing © Charlottesville,Virginia 22902-4596 Tel. (434)296-5832 . Fax(434)972-4126 Dj G r1tA Stormwater Pollution Prevention Plan (SWPPP) For Construction Activities At: Project Name: Pantops Corner Address: 1260 Richmond Rd ' Charlottesville, VA 22911 TMP 78-5A, 78-5B, 78-5E, & 78-58G1 Prepared by: Shimp Engineering, P.C. Prepared for: Pantops Corner LC SWPPP Preparation Date: 07/02/2019 APPROVED by the Albemarle County Community De e$op inent Department Rate A _ a File__ q►t f 4®� (This document is to be made publicly available according to 9VAC25-880-70, Part II, section D) Issued— 10/2014 Stormwater Pollution Prevention Plan(SWPPP) Albemarle County CONTENTS: (from Albemarle County Code Sec. 17-405) 1. Registration statement 2. Notice of general permit coverage 3. Nature of activity 4. Erosion and Sediment Control Plan. 5. Stormwater Management Plan 6. Pollution Prevention Plan. 7. Discharges to impaired waters, surface waters within an applicable TMDL wasteload allocation, and exceptional waters. 8. Qualified personnel 9. Signed Certification 10. Delegation of authority. 11. General permit copy 12. Inspection logs RECEIVED JUL 1 0 1619 DEVELOPM'E'1N Issued— 10/2014 Stormwater Pollution Prevention Plan(SWPPP)Albemarle County Section 1. Registration statement Issued— 10/2014 Stormwater Pollution Prevention Plan(SWPPP) Albemarle County VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY FOR OFFICE USE ONLY GENERAL VPDES PERMIT FOR DISCHARGES OF STORMWATER FROM ID Number: CONSTRUCTION ACTIVITIES (VAR10) Technical Criteria: IIB ❑ IIC El REGISTRATION STATEMENT 2019 NEW ISSUANCE ❑ RE-ISSUANCE El MODIFICATION WITH ACREAGE INCREASE d' MODIFICATION WITHOUT ACREAGE INCREASE ❑ Existing Permit Coverage Number(if applicable, VAR10####): VA 10E170 .. Section I: Operator/Perhiittee Inforriiatiori: A. Construction Activity Operator(Permittee). The person or entity that is applying for permit coverage and will have operational control over construction activities to ensure compliance with the general permit. A person with signatory authority for this operator must sign the certification in Section VI, (per Part III. K.of the VAR10 Permit). Construction Activity Operator Name: Pc4M-apc GoFnet L Contact person: /1l,c_vq e.,( Me,Gai�ua:� Address: [ 7ow L,;;,tym C4.. Sit. 101 City,State,Zip Code: I4CA e Co/ VA 2 3 113 Phone Number: 434 866 -854q Primary Email: ►'riC3Ot,,iap1 19Sp9h►q.1.GON) CC Email: kegLile.e. sco m B. Billing Information (leave blank if same as the Operator identified in Section I.A..above). This entity will receive Annual Permit Maintenance and Permit Modification Fee invoices(if applicable). Name: Contact Person: Address: City,State Zip Code: Phone Number: Primary Email:. CC Email: • C. May we transmit correspondence electronically? You must choose YES and include a valid email in order to pay by credit card and to receive your permit coverage approval letter via email: YES NOD Rev 04/2019 PAGE 1 17 I . CONSTRUCTION GENERAL PERMIT(VAR10) REGISTRATION STATEMENT 2019 Section II. Construction Activity Location Information. Project site information. A. Include a site map showing the location of the existing or proposed land-disturbing activities,the limits of land disturbance, construction entrances and all water bodies receiving stormwater discharges from the site. B. Construction Activity Name: PA t-I-bp S Corr ter Address: 12-60. Q ►G1'lr�'�D�� IQn( City and/or County and Zip Code: :Ghat. of,4,aJ.a-_( Latitude and Longitude (6-digit, decimal degrees format): ?2.0311 365/ —7i. 45301, C. Construction Activity Entrance Location (description, street address and/or latitude/longitude in decimal degrees): 137o sfo1i y PU%4 1- Rol, Cho r0,1fecv'l re VA i2 // 1 Section III. Offsite Support Activity Location Information. List all offsite support activities to be included under this permit registration. Enter additional areas on a separate page.Offsite areas not included on this registration may need to obtain coverage under a separate VPDES permit. A. Offsite Activity Name: .S Gk pi le O-, W Address: 17 54, s tO y City and/or County and Zip Code: G1k011- IOf-{.svi t iGj V 1' ZZ 9/1 Latitude and Longitude (6-digit, decimal degrees format): 3_y, 05 1 67 6, -7 . 1 P1O 261 B. Offsite Activity Entrance Location (description, street address and/or latitude/longitude in decimal degrees): 9 "A✓te rI of l' �twat y Section IV. Site Information. A. Acreage totals for all land-disturbing activities to be included under this B. Estimated Project Dates permit coverage. Report to the nearest one-hundredth of an acre. (MM/DD/YYYY) Total land area of development(including the entire yt. S area to be disturbed as approved in the Stormwater Start date: 07/0'fro/y Management Plan): Primary estimated area to be disturbed (portions with 7. ZS Erosion and Sediment Control Plan approval only): Completion date: 07/0 I/Zczo Offsite estimated area to be disturbed (if applicable): I ,$ C. Property Owner Status: FEDERAL ❑ STATE Cl PUBLIC ❑ PRIVATE fit D. Nature of the Construction Activity Description (i.e. commercial, industrial, residential, agricultural, environmental): :C-0*1N1.e,/cAl d a&loperyAf E. Municipal Separate Storm Sewer System (MS4) name (if discharging to a MS4): Rev 04/2019 PAGE 2 17 CONSTRUCTION GENERAL PERMIT(VAR10)REGISTRATION STATEMENT 2019 F. Is this construction activity part of a common plan of development or sale? YES El NO Ed G. 6ch Order Hydrologic Unit Code (HUC) and Receiving Water Name(s). Attach a separate list if needed. HUC RECEIVING WATERBODY(S) OZ090Z0(040 l 2;voiAA 4 .C.ltr, /Nlem/ow Greek Section V. Other Information. A. A stormwater pollution prevention plan (SWPPP) must be prepared in accordance with the requirements of the General VPDES Permit for Discharges of Stormwater from Construction Activities prior to submitting the Registration Statement. By signing the Registration Statement,the operator is certifying that the SWPPP has been prepared. B. Has an Erosion and Sediment Control Plan been submitted to the VESCP Authority for review? YES El NO El Erosion and Sediment Control Plan Approval Date (for estimated area to be disturbed).: C. Has land disturbance has commenced? YES NO l D. If this project is using approved Annual Standards and Specifications(AS&S), attach the completed AS&S Entity Form. AS&S Entity Name (if different from the Operator identified in Section II.A.): no SEE THE FOLLOWING PAGE FOR SIGNATURE AND CERTIFICATION REQUIREMENTS AND INFORMATION Rev 04/2019 PAGE 3 17 CONSTRUCTION GENERAL PERMIT(VAR10) REGISTRATION STATEMENT 2019 Section VI. Certification. A person representing the operator as identified in Section I.A. and meeting the requirements of 9VAC25-880-70. Part Ill. K must physically sign this certification. A typed signature is not acceptable. Please note that operator is defined in 9VAC25-870-10 as follows: "Operator"means the owner or operator of any facility or activity subject to the Act and this chapter.In the context of stormwater associated with a large or small construction activity, operator means any person associated with a construction project that meets either of the following two criteria:(i)the person has direct operational control over construction plans and specifications,including the ability to make modifications to those plans and specifications or(i)the person has day-to-day operational control of those activities at a project that are necessary to ensure compliance with a stormwater pollution prevention plan for the site or other state permit or.VSMP.authority„„permit conditions.(i.e.,,xhey,are authorized to,direct.workers•at a site to.carry_out activities required:by_.the. ..... -. stormwater pollution prevention plan or comply with other permit conditions). In the context of storm water discharges from Municipal Separate Storm Sewer Systems(MS4s),operator means the operator of the regulated M54 system. 9VAC25-880-70. Part III.K.Signatory Requirements.Registration Statement.All Registration Statements shall be signed as follows: a.For a corporation:by a responsible corporate officer.For the purpose of this chapter,a responsible corporate officer means:(i)a president,secretary,treasurer,or vice-president of the corporation in charge of a principal business function,or any other person who performs similar policy-making or decision-making functions for the corporation;or(ii)the manager of one or more manufacturing,production,or operating facilities,provided the manager is authorized to make management decisions that govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations,and initiating and directing other comprehensive measures to assure long-term compliance with environmental laws and regulations;the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for state permit application requirements;and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures; b. For a partnership or sole proprietorship:by a general partner or the proprietor,respectively;or c. For a municipality,state,federal, or other public agency:by either a principal executive officer or ranking elected official.• For purposes of this chapter,a principal executive officer of a public agency includes:(i)the chief executive officer of the agency or(ii)a senior executive officer having responsibility for the overall operations of a principal geographic unit of the agency. Certification: "I certify under penalty of law that I have read and understand this Registration Statement and that this document and all attachments were prepared in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information,the information submitted is to the best of my knowledge and belief true, accurate, and complete. I am aware that there are significant penalties for submitting false information including th possibility of fine an imprison ment fork knowing violations." Printed Name: ��'` " ' CSO�'W et r .� Signature (signed in ink): Date: 'i, () `LC/I Section VII. Submittal Instructions. Submit this form to the Virginia Stormwater Management Program (VSMP) Authority. If the locality is the VSMP Authority, please send your Registration Statement submittal directly to the locality; do NOT send this form to DEQ. A list of local VSMP Authorities is available here: VSMP Authorities. If DEQ is the VSMP Authority,please send to: If the locality is the..VSMP.Authority,.please send to: Department of Environmental Quality The Local VSMP.Authority(insert address below) Office of Stormwater Management Suite 1400 PO Box 1105 .;t_ ' Richmond VA 23218 <- constructionkp@deq:virjiniaagov,; Rev 04/2019 PAGE 4 17 Section 3. Nature of activity THIS SITE IS A PARTIALLY CLEARED LOT IN ALBEMARLE COUNTY OFF RTE 250 BORDERED BY MALLOY FORD TO THE EAST, GOODWILL TO THE WEST,RTE 20 TO THE NORTH,AND RTE 250 TO THE SOUTH. THE SITE IS BEING DEVELOPED INTO MIXED COMMERCIAL USE,WITH PRIVATE ROADS SERVING EACH PARCEL. THE TOTAL AREA OF DISTURBANCE IS 7.25 ACRES. THE FOLLOWING ARE THE PROPOSED MANAGEMENT STRATEGIES AND DETAILED SEQUENCE OF CONSTRUCTION: STAGE 1 1.INSTALL CONSTRUCTION ENTRANCE OFF RTE 20.TRUCKS SHALL BE CLEANED PRIOR TO LEAVING SITE. 2.INSTALL SILT FENCE,DIVERSIONS,AND SEDIMENT TRAPS. STAGE 2 CONTACT THE ENGINEER AND ALBEMARLE COUNTY FOR INSPECTION AND APPROVAL OF ALL E&S CONTROL MEASURES. STAGE 3 1.UPON APPROVAL OF E&S CONTROL MEASURES, BEGIN SITE WORK. 2. INSTALL ADDITIONAL CONTROL MEASURES AS SHOWN ON SHEET C9. 3.MAINTAIN PERIMETER CONTROLS THROUGHOUT CONSTRUCTION. STAGE 4 1.AS AREAS ARE BROUGHT TO GRADE,APPLY MULCHING,TEMPORARY SEEDING AND PERMANENT SEEDING. 2.ESTABLISH AND MAINTAIN PERMANENT STABILIZATION,INCLUDING VEGETATION OF ALL SLOPES AND GRASSED AREAS. 3. WHEN SITE HAS REACHED STABILIZATION,REMOVE PERIMETER CONTROLS. Issued— 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 4. Erosion and Sediment Control Plan. Issued- 10/2014 Stormwater Pollution Prevention Plan(SWPPP) Albemarle County VSIV P MAJOR AM EN DIV ENT ELAN EOM In FANTO5 COR \ E . v6 � .W LEGEND W k "Z EXIST NEW DESCRIPTION W I O 20 18 0 0 0 8 8 w a 1ssoc a ,Yrc TOP OF CURB ELEVATION Fr • 16s . It SPOT ELEVATION TAX NAP 78 PARCELS 5A. 5 5 E, $ 58G I � L-t tent . IYTw TOP OF WALL ELEVATION d '® n 12vBW BOTTBECHMARK OF W�ELEVATION �IVANNA DISTRICT, ALPEIVALE COUNTY, VIRGINIA Qt.. =w STORM SEWER ;s`��`z (1 W 0 -o- -w- ROOF DRAIN . s ri SEWER LINE VICINITY MAP SCALE: lee=1,000a OWNER/ DEVELOPER STEEP SLOPES ' � ' -via- -s+- WATER UNE - ' 7MANAGED&PRESERVED SLOPES ARE SHOWN '°' .R PANTOPS CORNER LC PANTOPS LC -sr- -w- GAS UNE ssa 12704 CRIMSON CT STE.101 12704 CRMSON CT STE.101 HENRICO VA,23233 HENRICO VA 23233 WATERSHED l am'Qt' -w- -ale- OVERHEAD ELECTRIC WIRE t M C tl`•1 c a r,v F -ui- -u¢- UNDERGROUND ELECTRIC I FGAI REFERENCE THIS SITE LIES WITHIN THE UPPER MANNA RIVER WATERSHED. C)� `�.p DB 4358 PG 684 THIS SITE IS NOT&THIN A WATERSHED OF A PUBLIC WATER SUPPLY '. C -�- -dr- OVERHEAD TELEPHONE UNE 'm 4n aye 45o55 gA '� .. erje' TONING: LAND USE SCHEDULE ° ? -iris- -usr- UNDERGROUND'TELEPHONE UNE Northeast Pa& a TMP 78-SA,SB V lU$TTNo 45183 P> HC-HIGHWAY COMMERCIAL,EC-ENTRANCE CORRIDOR Lie No 45183 �I---yy �� jy. s Nolen+Tow e Park 7MP 78-58G7 ONSITE AREA: u I- DRAIN INLET(DI) PE-HIGHWAY COMMERCIAL,PC N ENTRANCEA201 CORRIDOR02IMPERVIOUS 744A 7s cp• IMPERVIOUS 11,74E SF 4.0%T s ...le '' t fja PER APPROVED APPLICATION PLAN.NA 2013-00002 OPEN SPACE 278940 SF 96.0% F3',g le- AL 6 OrrZ s t TOTAL= 290,684 SF (6.67 AC.) O 0 STORM/SANITARY MANHOLE § R SOURCE OF BOUNDARY & TOPO OSED AREA X C PLUG z5a s 44, ,,� C BOUNDARY&TOPOGRAPHIC SURVEY INFORMATION FROM NEWPIMPERVIOUS 222,792 SF 76.7% a o' WATER VALVE&BOX V 9.. v,Wy FIELD SURVEY PROVIDED BY ROGER W RAY&ASSOCIATES,INC.ON MARCH 23,2018 OPEN SPACE 67.892 SF 23.39e j j FIRE HYDRANT ten, Q: G FIELD VERIFIED BY$HIMP ENGINEERING,P.C.(11/21/18) TOTAL= 290,68E SF (6.67 AC.) VA ".05 BENCHMARK(S): NAVD88, OFFSITE AREA(ROW IMPROVEMENTS): ® o WATER METER r� kla,vi°1 <oe43y tr ` SITE NAD83 VA STATE PLANE SOUTH EXISTING AREA x .-� .-� LIGHT POLE 4-4. ` EXISTING USE To AL. 6,250 SF (01_6.520 SF 5 Ac) VACANT LOTS -0- ♦ UTILITY POLE Cke ® - 0Avm1>"Ux PROPOSED AREA 7. c c' _ 3r & O R7ey,_ PROPOSED USE NEW IMPERVIOUS 4,945 SF 79.1% w 44 o E E Ec uA .Q RaA;n OPEN SPACE 1 305 SF 20.95 n o 0 0 PROPERTY UNE EE O',o w'Ca,M8A NEW HOTEL GAS STATION,RETAIL OUTPARCELS,AND PROFFERED ACCESS ROAD TOTAL= 6,250 SF (0.15 AC.) �c'c'c'u 'o ---- ADJACENT PROPERTY UNE r ' O1 31 q> FLOOD ZONE TOTAL AREA OF DEVELOPMENT AI owe F Pentode Certtet`y ,,p� VACATED PROPERTY UNE .d' _ PROPOSED AREA 71 t" c-'c' € -i' ACCORDING TO TIRE FEMA FLOOD INSURANCE RATE MAP,EFFECTIVE DATE NEW IMPERVIOUS 523 AC 76.7% 14.3 ti BUILDING SETBACK .304C F r<s' n FEBRUARY 4,2005(COMMUNITY PANEL 51003CO2870),PORTIONS OF THIS OPEN SPACE 1.59 AC 23}% N T Grant Food w, ® PROPERTY UE&THIN THE ZONE AE 100-YEAR FLOOD PLAIN TOTAL= 6.82 AC (0.15 AC.) PARKING SETBACK so 4 9 _ f a 19FT a K4'7. CONCURRENT PLANS AREA OF DEVELOPMENT=6.82 ACRES O c.) a a m s Poµc '$ LIMITS OF DISTURBANCE=7.25 ACRES SANITARY EASEMENT ,„; .if:). � Plans which require VSMP plan approval: -0''E 4 SDP 201900013. -- - -` GRADING EASEMENT I Meade Park AVetv)PW'', SDP 201900008, 0 000 0 DRAINAGE EASEMENT SDP 201800089, r.Jinn Pop/Restaurant, SUB 201900024 H sl - - UTILITY EASEMENT =,finrva, ay So -`V n•ur' -- -- WATER EASEMENT "`d`<s, 4gr GENERAL CONSTRUCTION NOTES FOR ACCESS EASEMENT 4.. HeN;, EROSION AND SEDIMENT CONTROL PLANS IMAGE PROVIDED BY GOOGLE MAPS STORM DRAINAGE EASEMENT opprowng authority must be notified one week prior to the pre-construction coo' . . '.r to the commencement of land disturbing oclnity,and one week prior Q .not inspection. 2.Au s erosion and sediment control measures will be constructed and maintained according to minimum standards And specifications of the Virginia Erosion and Sediment Contra Handbook and Virginia Regulations VR 625-02-00 Erosion and Sediment Control Regulations TREE UNE SHEET INDEX 3 NI erosion and sediment control measures are to be placed prior to or as the first step in clearing. FENCE 4.A copy Al the approved erosion and sediment control plan shall be naintoined on the site a1 all times. 5.Prior to commencing land disturbing activities in areas other than indicated on these plans(including,but not limited to,off-Ste borrow or waste areas),the contractor shall submit STREAM a supplementary erosion control plan to the owner for review and approval by the plan approving authority. v C I - COVER SHEET 6 The contractor isresponsible for installation of any additional erosion control measures necessary to prevent erosion and sedimentation as determined by the plan approving authority. fY 7.Al disturbed areas ore to drain to approved sediment control measures at all times during land disturbing activities and during site development until final stabilization is achieved. LL -312- -12- INTERVAL CONTOUR 8 During tlewatenrg operations,rater will be pumped into an approved filtering device. C2EXISTING CONDITIONS 9.The contractor shall inspect all erosion contra measures periodcolly and after each runoff producing rainfall event Any necessary repairs or cleanup to mainlmn the effectiveness of -300- 00- INDEX CONTOUR TO.the All till erosion mat coltrol be taken sfaolmbe anmade imde designated barrow area. O C3 SITE LAYOUT 11 Al waste malerids shall be taken to an approved waste area Earth fill shall be inert materials Only,free of roots,stumps,wood,rubbish,and other debris w CG-2 CC-2 STANDARD 6.CURB C4 - UTILITY PLAN 12.Borrow or waste areas are to be reclaimed within 7 days of completion per Zoning Ordinance section 5.1.28. 1E`r 73,Al inert materials shall be transported in compliance with section 13-301 0l the Code Al Albemarle. c) C5 GRADING PLAN 14 Borrow.fill or waste activity involving industnial-type power equipment shall be limited to the hours al 7:00om to 9:00pm. CC_I CG-6 COMBINATION 6'CURB A GUTTER 15.Borrow.fill or waste octiaty shoe be conducted in a safe manner that maintains lateral support,or order to minimize any honed to persons,physical damage to adjacent lane and Z CG - EROSION CONTROL NARRATIVE improvements, shall tl reserve It any public street become o sloes,oinking,air o perm. erosion measures I D 16.h nelrega seas Alee the Atright to instal,maintain, n of a convert to pPropetyt stamhrder management facilities where applicable all er on Contra required by this plan regardless of the sale of any lot,unit,building a other portion of the Property- ': O II I C7 - ESOP PHASE I - EX. MASS GRADING 17.Temporary stabilization shall be temporary seeding and mubhirg.Seeding Is to be at 75 Ibs/one,and,n the months of September to February to consist a 50/50 ma of Annual I- -I 1 J CONCRETE PAVEMENT/SIDEWALK Ryegrass and Cereal Winter Rye,or in March and April to consist al Annual Rye,or May through August to consist of German Millet Straw mulch is to be applied at 801bs/100sf _ _ Co - ESCP PHASE 2 - MASS GRADING Alternatives are subject to approved by the County erasion control inspector /� �..��, �. RIPRAP 18.Permanent stabilization shall be lime and fertilizer,permanent seeding,and mulch.Agricultural grade limestone shall be applied at 901bs/1000sf,incorporated into the top 4-6 ry `/ ® ASPHALT C9 - ESCP PHASE 3 - GENERAL CONSTRUCTION inches of soil Fertilizer shall be applied al 10001bs/one and consist of a 10-20-10 nutrient mu.Permanent seeding Mall be applied at 1801bs/acre and consist of 957.Kentucky LL W 31 or Tall Fescue and 0-5%Perennial Ryegrass or Kentucky Bluegrass.Straw mulch is to be applied at Nibs/100st.Alternatives ore subject to approved by the County erosion GRA55 a inspector -I• '� 19 Maintenance An measures are to be inspected weekly and after each minion Any domoge or clogging to structural measures is to be repaired immediately.SiH traps are to be i'Mpa, EC-2 MATTING cleaned when 500 of the wet storage volume is filled with sediment.All seeded areas are to be reseeded when necessary to acWeve a good stand of grass.Sit fence and doersan C I I STORM SEWER PROFILES dykes which are collecting sediment to half their height must be cleaned and repaired immediately Z IC •: All temporary erasion and sediment`B b_ EC-3 MATTING C 12 SWM DETAILS 20. control measures ore to be removed within 30 days of find site slobiizatioi,when measures are no longer needed,subject to approval by the County erosion control inspects g Q WETLAND 21.This plan shall be void id if the owner does not obtain o permit within 1 year of the dole of approval.(Water Protection Ordinance section 17-204G.) I •_ C 13 DETENTION DETAILS 22.Permanent vegetation shall be installed on denuded areas within nine(9)months otter the date the lane disturbing activity commenced.(Water Protection Ordinance section k sf,,L ` 13 ro PARKING COUNT 17 2078) OwW CROSSWALK GENERAL CONSTRUCTION NOTES N m • /4 / X HANDICAP ACCESSIBLE AISLE > Q 1.Price to any construction within any existing public right-of-way,including connection ene to any eeietng road,o permit shall be obtained ham the Virginia Department Al Tronwpatolian(VDOT). ® ® CG-12 This plan as drawn may not accurately reflect the requirements of the permit.Where any din of lOOws occur the requirements of the permit shall govern. 2.NI materidls and construeton methods shall conform to current spetirwitianh and standards ofMT unless otherwise noted. l6, HANDICAP PARKING 3 Erosion and siltation controls has shall be provided in acoruonce with the approved erosion control plan and shall be Metaled price to any clearing.grading a other construction. ate 4 NI slopes and disturbed aeon ore to be fertilized,seeded and mulched. 1 1 /SO 2018 5.The maximum allowable slope is 2:1(hagontd:verted) Where reosanobly°atonable,lesser Mapes of 3:1 or better ore to be ahieved. / 6.Pared,rip-rap o stabilization mot lined ditch may be required when in the opinion of the County Engineer,or designee,it is deemed necessary in order to stabilize a Adnage channel. Scale 7.Al tro/tic control signs shall conform with the Virginia Manud for Uniform Traffic Contra Devices. NOTE: 8.Unless otherwise noted oil concrete pipe shall be renfaced concrete pipe-Doss III. 1.THE SIZE OF THE SYMBOLS MAY VARY FROM WHAT IS SHOW Al e.covaUon for underground ppe,nstollation must comply with OSHA Standards for the Construction Industry(29 CFR Part 1926). Sheet No. Cl OF 13 File No. 12.025 ♦ _ _ F / LINE BEARING DISTANCE i v 0 CURVE DELTA RADIUS ARC TANGENT CHORD CHORD BEARING LI S72.25'28"E 3799. I z �y nd ••m�a+a. // C1 57'40'35" 220.00 221.46 121.14 212 23 S43'35'10"E L2 N89.36'S9"W 17.96' 7 V G z `w mc.Pm / _ C2 15'05'31" 220.00 57.95 29.14 57.78 S07'12'07"E L3 N00101'00"E 3.45' i \"� E f ` C3 1'12'01" 1392 40 29.17 14.58 29.17 N34'38'56"E L4 589'25'16"W 27.07' �•v/ • TMP 78-6 7 ,,,, L5 N54'58'43"E 2022' MALLOY VII- RICHMOND RD LLC z P 78-5K / LB N57'02'20"E 1.78' I i \ 4,BETTOR, JAMES OR P GY / DB 5090 PG 504 UTILITY APPROX. 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'' nun ,u m, . /� py� \ v v A A 111 \ 7• •� 1 10 e - T !uiJ / • • \ • NE RANG & STORMINLETSON V- • •, .. � • .•O^.• • -;•( / t ;I 11• p O�� r'j I \ 1 / fi/ �/L L�1 P / 1 ;j / • '\ \ i I TM 78-SA BUT NOT THE STORM .I In C j}} II,-� I • \ �`\ �'e I I iY IL lf4 ,o �• - \ _ <--_1 "\ 83"' 1SEWER DESIGN FOR THIS PARCEL. , Iliun�f� N O ? \\S \ 4::1 / '4,, - „. A \I \\ \ \ 84•' \1 IZ \J. �-\\\ I_ I 5 .U'T I I n/iiiN ie.i. IUSTIN M SHI&ff ,, \.. >l 1 I \\ 9 \ \ 81 00 \ I >• O L.,�l _ / I.1l W Lib.No 45113 I 1\ 3 11/tlt 111 • A\I `'.:1` \ t ` I 1 - .�\ \ , — 0.: ..: ,... •: - /. ,��k VI Y11J-Nnl .e 4 Bt p5 �I®� / I 1 I / 'd M/111 191 e. �,1 \ a1" �I > o t \ \\ ' �" J6o` \ �. t 1' -. I I - .; l/ J -� \\1 , 1116..\. / i ,' I�niisi Fss/ EN ``` y \\\•II \ \ k 1 \ \ \80'° \ � INQ �_ ::,,,./,,1 .`n afM - - - --- / �MII !k oSAL I!► \\\ \i \ 5-STORY H L - Y__J 1 tia ®� - 1 r l I ..� I nr�1l 1Q ,> 15,394 SF F00 y / �.-.-.-._ 1a uu ■l v ` �v vv �\� .. 1 I A 1 11 I I-@• '•• FFE=381.60 pro �; # /litil / , ' �I �r i' �I1t v'k \ \ \. o \,, `Y I 122 BARKING eo , la -\ \ \ \ \ \ —i 1 1 1 83' `. • 1` 7 SEGMENTAL BLrCR �i \\� E�Y 9 •r .�"�� I /' / /' \ _�._ \\ \,. \ \ 1 \\\V,� 1 I I E_ SPACES II 44 \ / vs I—— BET.WALL PRO r �_ _ / I < v -. , �V7 11 `—_ ,/////% �� ' , ---_Q`'NANDRrtiC� _ _ �� .• •.� I ���yi} �z \ ��;; .\ \\ r „ --; / r : ,-_ =p 80° `'a� �� nl i �c�wL9 - -� \\ -� k '� �` A7FTi17LF' f o�p, ��- 93' o 'P `oEEE� \ \ti _,\. �\ '�� \\ \4: ,\ I / _1 • do. _ P7.' r,18, , -.L»_ / ,,,,__ „ .. -4,34, _�fk,, µ Y MP S»_r\« .._» V,., ,' ',OV •'__.-. +� 'a 1., 9?\ IsAgi 'o \ !�,`� .� ! I �\ C. 'oat \ .\ \ \ \k. \\ Silt \ \t e-_ �Y\ 7B ��00 • � II� ®� 04 / t. \ eA e�e>E \` \\\ • \`\ \\ _ l \LOCK �Y iYEAl1i_\\ �� ��� I -- `� ` 92 _ �i _f1D ��"i_! I ', ` `��, \ ` \.✓so \ :\ \ § PRO HANDRAIL I �I ���- i 17—\er - _ • � / 111 `,\ / Q\• \` .\ \\ \ \�\ \ .. \ � UP-PER-WALL. 72�/ ���'\\/ 1 � m _ea- ' 1V: 90 17 �,ir - Y ,.\ I �\ �y,Q'• �So v ,`vv v ` Nv \ v v �.� � .e ii m• -'SY �— > v 1.1 BLOC A A�1111 em���� '" 6.a �. v _h 1'./ ,e"i —___ 3.900 SF Malan1" V `,, •- .9 _ `r e" STORAGE BUILDING- (22 SPACES) h 111371 \�A�'�6`0 • ♦ V`v v v \ vv `v ^v iY • vX�� i 16,690 SF �B '66- : FFE=390.22 '° _i�' 1111 0000 0 \ i \ i• `.. 79 ...,. i/ 12 SPACES `'� 39 y/ y/,�9\S7S \ \\`,\,\` \ �`\ .:. \\\ \\ \a•..• ••'. � 1@ /���, 1\ II I \ '�___ _ _�_SLOPEs(T'P)\\MANAGED \\ Ea,..., .\,r - 9� --. i u'• -H n.,n A/ r t �'f'BOA! \� \ `\ \ '`\ \ ` -'e Y� '' , \' i sYssssY=u�r�eet�ius a = 'd \\ till --- I I`7 /`9� •'NI \\ / \ 4� �ellrwwwswsiwsr=oeIlli sssuiMM : . I i . 6 \ , \ 7•A. A 6 \• 1 g,swMsGswwwuswaism.TsLmM a`� _ \` / 7GGii.illG>.3ii•GiiliA.i�w ■•ass 87" • s �°44;4/ a es=e=cGaQs.oswowwlwxes�eesa T1 Q tS \ \`• \ \ . ` _ • Al— °• t-;{.. /.'� A -i M_EZZSi�wiriii�i»?.ii.7�wwi t• V ' essesswesaeerswwwwwwsrii 1 MN d \ \_ ✓' sowwGe�suwlcsUINN MErI Gss5w — { , / - d . \, \ 4� O `, ' �z isww.acG:wG:ssss GGwwG - 1 _I--1- /�/�� ` I __ swwwswasses i V \ SLOPETYP.) 3so . teei:1 -, :.` >°-.. - °'_'` i-D6B ,ae' -vo-- - �wi..�111► \ TMP 78-5F , li \` � _ _ • • ' �� - - _ a. \ PAN TOPS LC I _ 69I 111 DB 5147 PG 228 5 \ ``_-- ,\ /`� --— (2)6 SEGMENTAL — — \\1 i, I '/ t.) ` : 1, �;� BLOCK_RET.WALLS. \ 10'SEGMENTAL BLOCK I I \ I ` `\ —i'RGMBE-i2�AINBRAIL— RET WAS PROM 4 — t (1 I JJI I�*Via, Via s� \\ ON UPPER WALL_ \ RAIL ON UPPER WALL 7 i 1\1 \11 tl �-1 .�\ !-a ,,. 54 Lz/ \ \ ' 1 - ``_ \\1\111111111 �'.J '-'S'' �1: 's,5 ` \ 9c,,,,/ V �,. TMPv 7: 5C -' A I I A , �� a <4 'I �� \ \\ FLOW 12\8• STONY \, 1 --1'\'1 A\I `I• AI\ ■ na,,,,, J NNA '�� �� `, POINT LC v II I v,AAI\\v�`vIvv I Q , • N\ �3LP�,I \ DB 5147\I•'G 228 L J " I \ \\\A. IL _ Cr 111 V N. - Imo" , .cy `,\ \\ , \\ t I 1 `, \�\�- ---——————— —— 1.7;% - ► O LU ♦.„•\ I "\� 1 \\ -360 -- I I I 1\ `I \ I I \ G WINDING 1�• \ ./ iii `� \ ' \ I u) M� Q RIVER ; �� { I \ __ I i k \ \ Dote LANE I i L� / 11/30/2018 5 \N. 1 I 1\ _, _ _ Scale ` - `.,...� s FR \ No 30 0 30 so so sneer C5 OF 13 \ ` \` \\\ _ We iPiSii File No. Seale. 1"=30• 12.025 a p PROJECT DESCRIPTION, GENERAL NOTES, EROSION & SEDIMENT CONTROL NOTES AND SEQUENCE OF CONSTRUCTION '� w Q Z T`wN' ;2 Mj '''',2'I t o �O f ' PROJECT DESCRIPTION CONSTRUCTION MAINTENANCE MINIMUM STANDARDS(MS): z All applicable Virginia Erosion and Sediment Control Regulations and Minimum r a THIS SIZE IS VACANT LOTS AT THE INTERSECTION OF RTE 250&RT 20 IN ALBEMARLE COUNTY THE FOLLOWING CONSTRUCTION MAINTENANCE PRACTICES SHALL BE FOLLOWED AT THE SITE Standards shall be adhered to during all phases of construction These z BEING DEVELOPED INTO COMMERCIAL SERVICE FACLITES. include,but are not limited to the following: �I 1. ALL E&S CONTROL MEASURES WILL BE CHECKED DAILY AND AFTER EACH SIGNIFICANT RAIN EVENT. V 0 THE DEVELOPMENT AREA(ONSITE AREA+IMPROVEMENTS WITHIN THE ROW)IS 6.82 ACRES. ALL DEFICIENCIES IDENTIFIED DURING THESE INSPECTIONS SHALL BE CORRECTED AS SOON AS 1.STABILIZATION OF DENUDED AREAS: THE LIMITS OF DISTURBANCE IS 7.25 ACRES PRACTICABLE. Permanent or temporary soil stabilization shall be applied to bore oreos 2.THE SILT FENCE BARRIER SHALL BE REGULARLY CHECKED FOR UNDERMINING.DETERIORATION OR within seven days after final grade is reached on any portion of the site. THE PROJECT INVOLVES THE FOLLOWING WORK ACTUATES. SIGNIFICANT EROSION SEDIMENT SHALL BE REMOVED AFTER EACH STORM EVENT AND WHEN THE Temporary soil stabilization shall be applied within seven days to denuded p LEVEL OF SEDIMENT DEPOSITION REACHES HALF THE HEIGHT OF THE CONTROL. oreos that may not be at final grade,but will remain dormant or ry 1. THE CONTRACTOR SHALL OBTAIN ALL LOCAL AND STATE EROSION AND SEDIMENT PERMITTING 3 THE CONTRACTOR IS RESPONSIBLE FOR ADHERING TO ALL MAINTENANCE REQUIREMENTS SET FORTH undisturbed for longer than 14 days. Permonent stabilization shall be Qg gi REQUIREMENTS AND MAINTAIN ALL EROSION AND SEDIMENT CONTROLS IN ACCORDANCE WITH THE IN THE CURRENT EDITION OF THE VIRGINIA SEDIMENT AND EROSION CONTROL MANUAL OTHER applied at areas that are to be left dormant for more than 1 year PERMIT REQUIREMENTS. APPLICABLE COMMONWEALTH OF VIRGINIA REGULATIONS AND THE PROJECT SPECIFICATIONS, j 4.ALL SEEDED AREAS WILL BE REGULARLY CHECKED TO ENSURE THAT A GOOD STAND OF GRASS IS 2.STABILIZATION OF SOIL STOCKPILES:2.INSTALLATION OF PERMANENT EROSION AND SEDIMENT CONTROL MEASURES AS SHOWN ON THE MAINTAINED. W •ui PLAN AND DETAILS. During construction a the project,soil stockpiles The appll be stabilizedisresponsible ai 3 GRADING AND PLACEMENT OF FILL SHALL BE IN GENERAL ACCORDANCE WITH THE PLAN 5.AREAS WITH RIP-RAP SHOULD BE REGULARLY INSPECTED TO DETERMINE. HIGH ROWS HAVE protected with sediment trapping measures. The applicantsoil is responsible for 0 N 4.ESTABLISHMENT OF PERMANENT STABILIZATION OF ALL DISTURBED AREAS. DAMAGED THESE CONTROLS OR CAUSED EXCESSIVE SEDIMENT DEPOSITION. ALL AREAS SHALL BE temporary protection and permanent stabilization of all soil stockpiles on 4 w MAINTAINED IN ACCORDANCE WITH THE REQUIREMENTS OF THIS E&S CONTROL PLAN site as well os soil intentionally tronsportetl from the project site EXISTING SITE CONDITIONS ENVIRONMENTAL CONTROLS 3.PERMANENT VEGETATIVE COVER w 0 THE EXISTING SITE IS CLEARED AND VACANT AND HAS A CURRENT GRADING PERMIT A permanent vegetative cover shall be established on denuded areas not E, N 1. CONTRACTOR SHALL PROVIDE AND MAINTAIN ALL ENVIRONMENTAL CONTROL MEASURES SO AS TO otherwise permanently stabilized. Permanent vegetation shall not be ADJACENT PROPERTIES COMPLY WITH LOCAL ORDINANCES,STATE AND FEDERAL LAWS AND REGULATONS APPLICABLE TO considered established until a ground saver is achieve that,in the opinion a ii WATER POLLUTION IN WATERS OF THE STATE AND IN INTERSTATE WATERS of the county Inspector, is uniform and mature enough to survive to inhibit THIS PROPERTY IS BORDERED TO THE NORTH AND SOUTH BY EXISTING STREETS.TO THE EAST AND erosion NEST ARE AUTD DEALERSHIPS. . 2 CONTRACTOR SHALL MINIMIZE THE POTENTIAL FOR AIR POLLUTION BY THE USE OF EMISSION CONTROL EQUIPMENT ON CONTRACTOR OPERATED EQUIPMENT,SHUT-DOWN OF MOTORIZED 4.TIMING&STABILIZATION OF SILT TRAPPING MEASURES: OFFSITE AREAS' EQUIPMENT WHEN NOT IN USE,AND ACTIVELY CONTROLLING DUST EMISSIONS THROUGHOUT THE Sediment basins and traps,perimeter dikes,sediment barriers and other SOIL SHALL NEED TO BE EXPORTED TO THE STE TO SITES WHICH SHALL HAVE EROSION CONTROL PROJECT. measures intended to trap sediment shall be constructed as a first step in PERMITS, any land disturbing activity and shall be made functional before ups lope O0NLTH q,,,^ EROSION&SEDIMENT CONTROL PERMITTING land disturbance takes place ,, !� �� CONTRACTOR SHALL BE RESPONSIBLE FOR OBTAINING ALL LOCAL AND STATE EROSION AND 5.STABILIZATION OF EARTHEN STRUCTURES: i THE SITE CONTAINS THE FOLLOWING SOIL TYPES. SEDIMENT CONTROL PERMITS AND MAINTAINING ALL EROSION AND SEDIMENT CONTROLS IN Stabilization m uses shall be applied to earthen structures such as O 2 12C -CATOCTIN SILT LOAM -7 TO 15%SLOPES,HOG B ACCORDANCE WITH THE PERMIT REQUIREMENTS. cos 121) -CATOCTIN SILT LOAM -15 TO 25%SLOPES,HSG B darns, dikes and diversions immediately after installation. U NSTIN M.SHIMP Y 238 -DAVIDSON CLAY LOAM-2 TO 7%SLOPES,HOG B GENERAL NOTES Lic No.45183 27C -DAVIDSON CLAY LOAM-7 TO 15%SLOPES,HOG B6 SEDIMENT TRAPS AND BASINS. A �� 88 -UDORTHENTS,LOAMY -2 TO 25%SLOPES,HOG B A sediment basin shall control surface runoff from disturbed areas that is 1. THE INFORMATION AND DATA SHOWN OR INDICATED WITH RESPECT TO THE EXISTING UNDERGROUND comprised of flow from drainage areas greater than or equal to three acres. 10, ` CRITICAL AREAS UTILITIES AT OR CONTIGUOUS TO THE SITE ARE BASED ON INFORMATION AND DATA FURNISHED TO The sediment basin shall be designed and constructed to accommodate the •VR.Eg qAL ''''-- THE OWNER AND ENGINEER BY THE OWNERS OF SUCH UNDERGROUND FACILITIES OR OTHERS. THE anticipated sediment loading far the land disturbing activity. The outtall THE CRITICAL AREAS ON THE SITE ARE THE MANAGED AND PRESERVED SLOPES.CARE SHALL BE OWNER OR ENGINEER SHALL NOT BE RESPONSIBLE FOR THE ACCURACY OR COMPLETENESS OF device or system device shall take into account the total drainage area TAKEN TO CONTROL EROSION IN THESE AREAS SUCH INFORMATION OR DATA.THE CONTRACTOR SHALL HAVE FULL RESPONSIBILITY FOR CONFIRMING flowing through the disturbed area to be served by the basin THE ACCURACY OF THE DATA,FOR LOCATING ALL UNDERGROUND UTILITIES FOR COORDINATION OF EROSION&SEDIMENT CONTROLS THE WORK WITH OWNERS OF SUCH UNDERGROUND UTILITIES DURING CONSTRUCTION,FOR THE 7.CUT AND FILL SLOPES SAFETY AND PROTECTION THEREOF AND REPAIRING ANY DAMAGE THERETO RESULTING FROM Cut and fill slopes shall be designed and constructed in a manner that 1.SAFETY FFNCF• A PROTECTIVE BARRIER INSTALLED TO PROHIBIT UNDESIRABLE THE WORK. ALL OF THESE CONDITIONS SHALL BE MET AT NO ADDITIONAL COST TO THE OWNER will minimize erosion. Slopes that are found to be eradin gexcessively USE OF AN EROSION CONTROL MEASURE STD. AND SPEC. 3.01. THE CONTRACTOR SHALL CONTACT'MISS UTILITIES'OF VIRGINIA AT 1-800-552-700I PRIOR TO within one year of permanent stabilization shall be provided with additional 2 fvONSTRUCTON ENTRANCE' INSTALL AND MAINTAIN A CONSTRUCTION ENTRANCE,AS NECESSARY, THE START OF WORK. slope stabilizing measures until the problem is corrected. - • THAT MEETS THE REQUIREMENTS OF STD.AND SPEC.3.02 AND CONFORMS WITH THE 2 WHEN WORKING ADJACENT TO EXISTING STRUCTURES,POLES,UTILITIES,ETC.,THE CONTRACTOR REQUIREMENTS OF THE EROSION&SEDIMENT CONTROL PLAN. SHALL USE WHATEVER METHODS THAT ARE NECESSARY TO PROTECT STRUCTURES FROM DAMAGE. 8.CONCENTRATED RUN-OFF DOWN CUT OR FILL SLOPES: 3 SILT FENCE'INSTALL AND MAINTAIN SILT FENCE THAT MEETS THE REQUIREMENTS OF STD.AND ANY DAMAGE CAUSED BY THE CONTRACTOR OR ITS SUBCONTRACTORS SHALL BE THE CONTRACTOR'S Concentrated runoff shall not flow down cut or fill slopes unless contained SPEC 3.05 THIS SILT FENCE SHALL BE INSTALLED AS SHOWN ON THE EROSION&SEDIMENT SOLE RESPONSIBILITY TO REPAIR OR REPLACE.THIS EXPENSE IS THE CONTRACTOR'S RESPONSIBILITY. within an adequate temporary or permanent channel,flume,or slope drain CONTROL PLAN AND ACCOMPANYING DETAILS FOR THE PURPOSE OF INTERCEPTING SILT-LADEN 3.REPLACEMENT OR REPAIR OF DAMAGED STRUCTURES SHALL BE AT THE CONTRACTOR'S EXPENSE structure. `, , ;, RUNOFF BEFORE IT IS DISCHARGED FROM THE SITE THE SILT FENCE SHALL BE INSPECTED AND 4 THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROTECTING ALL EXISTING SITE STRUCTURES FROM c c c p_ MAINTAINED TO ENSURE CONTINUED PERFORMANCE DAMAGE AND COORDINATING WORK SO THAT THE OWNER CAN MAKE NECESSARY ARRANGEMENTS TO 9 WATER SEEPS FROM A SLOPE FACE: O o E E E c yr 4 TEMPORARY SEDIMENT TRAP A SMALL PONDING AREA,FORMED BY CONSTRUCTING AN EARTHEN Whenever water seeps from a slope face,adequate drolnage or other ILA E D.2 o MOUICON RACTO EXISTING STRUCTURES FROM DAMAGES r4 ..z N EMBANKMENT WITH A STONE OUTLET ACROSS A DRAINAGE SWALE,TO DETAIN SEDIMENT-LADEN 5.THE CONTRACTOR SHALL BE RESPONSIBLE FOR NOTIFYING ALL UTILITY OWNERS,ADJACENT LAND protection shall be provided. `lH > RUNOFF FROM SMALL DISTURBED AREAS FOR ENOUGH TIME TO ALLOW MOST OF THE SUSPENDED OWNERS WHOSE PROPERTY MAY BE IMPACTED AND THE VIRGINIA DEPARTMENT OF TRANSPORTATION o SOLIDS TO SETTLE OUT MAXIMUM EFFECTIVE LIFE IS 18 MONTHS.STD.AND SPEC.313.TO BE 10.STORM SEWER INLET PROTECTION: PRIOR TO COMPLETING N ANY AND OE WORK. A�' CONVERTED INTO A PERMANENT DETENTION POND AT THE END OF CONSTRUCTION AS DETAILED. 6.CONTRACTOR SHALL NOTIFY AND COORDINATE ALL WORK INVOLVING E%ISTNG UTILITIES WITH UTILITY All storm sewer inlets that ore made can during construction shall 'o i3 5.TEMPORARY DIVERSION DIKE' A RIDGE OF COMPACTED SOIL CONSTRUCTED AT OWNERS,AT LEAST 72 HOURS PRIOR TO THE START OF CONSTRUCTON be protected so that sediment-lodes water cannot enter the conveyance Cl`"'cA E THE TOP OR BASE OF A SLOPING DISTURBED AREA WHICH DIVERTS 7.ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR system without fast being filtered or otherwise treated to remove sediment. SEDIMENT-LADEN RUNOFF TO A SEDIMENT TRAPPING STRUCTURE. MAXIMUM THE CONSTRUCTION INDUSTRY(29 CFR PART 1926). LT,EFFECTIVE LIFE IS 18 MONTHS. STD. AND SPEC. 3.09 THE CLEANWATER DIVERSIONS 11.STABILIZATION OF OUTLETS: 8 THE CONTRACTOR SHALL VERIFY THE LOCATIONS OF ALL BOUNDARIES,BUILDINGS,VEGETATION,AND WILL BE MADE STABLE BY THE USE OF VDOT LD-268 DESIGN STANDARDS, Before newly constructed stormwoter conveyance channels are made OTHER PERTINENT STE ELEMENTS.CONTRACTOR SHALL IMMEDIATELY REPORT ANY DISCREPANCIES protection antl any required temporary or O 6 TEMPORARY SEEDING TEMPORARY SEEDING SHALL BE APPLIED TO ALL DENUDED AREAS WITHIN operational,adequate outletm P'm"� BETWEEN EXISTING CONDITIONS AND CONTRACT DOCUMENTS TO THE OWNER AND ENGINEER SEVEN(7)DAYS TO DENUDED AREAS THAT MAY OR MAY NOT BE AT FINAL GRADE BUT WILLpermanent channel lining shall be installed in both the conveyance channel o 0 0 0 0 9 CONTRACTORTEL SHALL SUBMIT FORNTHE APPROVALESHOP OF THE WINGS. SUBMITTALSUR 'S ALL SPECIFIEDO and receiving channel �1 REMAIN DORMANT(UNDISTURBED)FOR LONGER THAN 14 DAIS. TEMPORARY SEEDING SHALL BE9 -, APPLIED IN CONFOMANCE WITH STD AND SPEC 3.31. MATERIALS LISTED IN THE PLANS,TO INCLUDE DRAWINGS,MANUFACTURER'S SPECIFICATIONS tin 16.--................. 7 PERMANENT SEEDING PERMANENT SEEDING SHALL BE APPLIED TO AREAS DELINEATED ON THESE AND LABORATORY REPORTS.THE OWNER'S APPROVAL OF SUBMITTALS`MLL BE GENERAL AND'MLL 12.WORK IN LIVE WATERCOURSES. O -J PLANS WITHIN SEVEN(7)DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE STE NOT RELIEVE THE CONTRACTOR FROM THE RESPONSIBILITY OF ADHERENCE TO THE CONTRACT AND When work in o live watercourse is performed,precautions shall be taken W� O o 0 8 FOR ANY ERROR THAT MAY EXIST. to m nimize encroachment,control sediment transport and stabilize the work W PERMANENT SEEDING STABILIZES DISTURBED AREAS AND ENHANCES THE BEAUTY OF THE SITE. 10.CONTRACTOR SHALL BE RESPONSIBLE FOR OBTAINING ALL NECESSARY PERMITS,INSPECTIONS, area Ito the greatest extent possible during construction. Nonerodible 8 MULCHING:APPLICATION OF PLANT RESIDUES OR OTHER SUITABLE MATERIALS TO THE SOIL BONDS,AND OTHER RELATED ITEMS IN ACCORDANCE WITH LOCAL AND STATE POLICY. material shall be used for the construction of causewa and cofferdams. a SURFACE TO PREVENT EROSION AND FOSTER THE GROWN OF VEGETATON ORGANIC MULCHES n .-C4r" (STRAW)HAVE BEEN FOUND TO BE THE MOST EFFECTIVE. Earthen fill may be used for these structures if armored by nonerodrble ,ri cover materials. 9 DUST CONTRA CONDUCT DUST CONTROL OPERATIONS NECESSARY TO MET THE REQUIREMENTS STORMWATFR MANAGEMENT NARRATIVE: OF STD.&SPEC.3.39 AS REQUIRED TO CONTROL SURFACE AND NRBIXKNE MOVEMENT OF DUST 1}.CROSSING A LIVE WATERCOURSE: 10.INLET PROTECTION.INLET PROTECTION MEASURES AROUNF THE NEW INLETS SHALL BE PROVIDED 1.ALL CONCENTRATED ONSITE RUNOFF SHALL BE ROUTED INTO CHANNELS AT When a live watercourse must be crossed by construction vehicles more • IN ACCORDANCE WITH STD.AND SPEC 3.07 SILT FENCE,STRAW BALES OR TEMPORARY STONE RATES THAT COMPLY WITH VA TYPE 11C SWM REULATIONS AS THE SITE IS than twice in any six month period,a temporary stream crossing APPLICATIONS SHALL BE APPLIED AS APPROPRIATE FOR CURRENT GRADE CONDITIONS. GRANDFATHERED INTO A TYPE IIC SWIM PERMIT. constructed of nonerodible materials shall be provided. 11 OUTLET PROTECTOR RIP-RAP SHALL BE PROVIDED AT THE OUTFALL OF CONVEYANCE 2.WATER QUANTITY IS ADDRESSED PER 9VAC25-870-97&98(TYPE IIC BEGS). AT ... CHANNELS,CULVERTS,AND STORM SEWERS IN CONFORMANCE WITH STD,AND SPEC.3.18. EACH POINT OF ANALYSIS,THE POSTDEVELOPMENT 2-YR AND 10-YR PEAK 14 APPLICABLE REGULATIONS: OUTLET PROTECTION SHALL BE INSTALLED WITH ACCOMPANYING STORM SEWERS AND SHALL BE RUNOFF IS LESS THAN THE PREDEV PEAK RUNOFF. All applicable federal,state and torn)regulations pertaining to working in 'I 1 h:: ' INSPECTED AFTER EACH RAINFALL EVENT AND REPAIRED IF NECESSARY ANT SEDIMENT BUILD 3.WATER QUALITY WILL BE ADDRESSED PER 9VAC25-870-96(TYPE IIC REDS) or crossing live watercourses shall be met. Z UP SHALL BE REMOVED WITH THE PURCHASE OF 8.49 LBS OF PHOSPHOROUS NUTRIENT CREDITS TO PERMANENT STABII IZATQN AND SEQUENCE OF CONSTRUCTION SATISFY THE NUTRIENT LOAD REDUCTION AS SET FORTH BY THE DEO IN THE 15.STABILIZATION OF BED AND BANKS �R VIRGINIA STORMWATER MANAGEMENT PROGRAM. The bed and banks of a watercourse shall be stabilized immediately after THE FOLLOWING ARE THE PROPOSED MANAGEMENT STRATEGIES AND DETAILED SEQUENCE OF 4 STORM SEWER ON TM 78-SA TO BE DESIGNED UNDER WAWA SITE PLAN. THIS work in the watercourse is completed CONSTRUCTION: VSMP PLAN COVERS THE CONVEYANCE AND TREATMENT OF RUNOFF FROM CC PARCEL TM 78-5A BUT NOT THE STORM SEWER DESIGN WITHIN THIS PARCEL. 16.UNDERGROUND UTILITIES: STAGE 1 Underground utilities shall be installed in accordance with the following UNDERGROUND DETENTION MAINTENANCE NOTES: standards in addition to other criteria: 1:::::) / 1.INSTALL CONSTRUCTION ENTRANCE OFF RTE 20. TRUCKS SHALL BE CLEANED 1.INSPECT THE 3 TRASH SCREENS AT DETENTION INLET AREAS TWICE PER YEAR,IN THE PRIOR TO LEAVING SITE. SUMMER AND IN THE WINTER.CLEAN OUT DEBRIS WITH VAC-TRUCK DURING a.No more than 500 linear feet of trench may be opened of one time. 2 ADD RIP-RAP TO SITE OUTFALL NEAR STREAM.INSTALL SILT FENCE, INSPECTION.REPAIR SCREENS IF NEEDED. b.Excovated material shall be placed on the uphill side of trenches DIVERSIONS,AND SEDIMENT TRAPS. 2 INSPECT WEIR PLATE ORIFICES,TRASH RACKS,AND WELDS ANNUALLY REMEDY ANY STAGE 2 CLOGS OR FAILURES,AND REPLACE ORIFICE TRASH RACKS IF NEEDED. c.Effluent for dewatering operations shall be filtered or passed through THE ENGINEER AND ALBEMARLE COUNTY FOR INSPECTION AND 3 INSPECT GENERAL SYSTEM DEBRIS ACCUMULATON ONCE EVERY 2 YEARS.IF DEBRIS OR approved sediment trapping device,or both,and discharged in o manner Z CONTACT APPROVAL G E&5 CONTROL MEASURES SEDIMENT IS NOTICED,CLEAN OUT SYSTEM WITH A VAC-TRUCK USING ACCESS RISERS that does not adversely affect flowing streams or offsite property. d.Material used for backfilling trenches shall be properly compacted in order STAGE Ti to minimize erosion and promote stabilization. 1.UPON APPROVAL OF ENS CONTROL MEASURES,BEGIN SITE WORK. 2.INSTALL UTILITIES AND COMPLETE MASS GRADING.MAINTAIN SEDIMENT TRAPS e.Rest abilization shall be accomplished in accordance with these regulations. y U UNTIL GRADING IS COMPLETE. TRAPS SHOULD REMAIN UNTIL DETENTION PIPES LL � O ARE INSTALLED. f Applicable safety regulations shall be complied with. 3 INSTALL ADDITIONAL CONTROL MEASURES AS SHOWN ON SHEET CB. 0 4.MAINTAIN PERIMETER CONTROLS UNTIL ROAD CONSTRUCTION IS COMPLETED 17.CONSTRUCTION ACCESS ROUTES. III AND SITE HAS ACHIEVED TEMPORARY STABILIZATION Where construction vehicle access routes intersect paved public roads, U. J STAGE 4 provisions shall be made to minimize the transport of sediment by vehicular M 1 AS AREAS ARE BROUGHT TO GRADE,APPLY MULCHING,TEMPORARY SEEDING tracking onto paved surfaces Where sediment is transported on to a Q AND PERMANENT SEEDING. public oil surface,the road shall be cleaned thoroughly at the and of 2.ESTABLISH AND MAINTAIN PERMANENT STABILIZATION,INCLUDING VEGETATION each dayr Sediment set shall controlb removed dis by shoveling ro t sweeping and O F ALL SLOPES AND GRASSED AREAS. transported to a sediment disposal area Street washing shall be ^ C 3.WHEN SITE HAS REACHED STABILIZATION,CONTACT ALBEMARLE COUNTY allowed only offer sedimenta is removed in this manner This provision shall LL L INSPECTOR TO PERFORM FINAL INSPECTION. apply to individual lots swell os to larger land disturbing activities. W 4.WHEN INSPECTOR HAS GRANTED APPROVAL,REMOVE PERIMETER CONTROLS. 18.TEMPORARY CONTROL MEASURE REMOVAL W a wrs All temporarryy erosion and sediment control measures shall be removed within days after final site stabilization or after temporary measures are J no longerer needed,unless otherwise authorized by the local program N authority. of tl sediment and the be e soil areas resulting from the /\ disposition of temporary measures shall be permanently stabilized to prevent . . further erosion and sediment 19.ADEQUACY OF RECEIVING CHANNELS Date Properties and waterways downstream from the development site shall be 1 1/30/201 8 protected from sediment deposition,erosion and damage,due to increases in volume,velocity and peak flow rates of stormwoter runoff for the stated SoOle frequency storm of 24-hour duration Sheet No. C6 OF 13 File No. 12.025 /i / // 4 /,/ / / i i /- r ,' / /ifBE�^� • / I / r 1♦/ I I \ \ \\ \ \ \ III II I ') r "mo\ / / / / /'i/// //'/'/ / ' ///' / / FABLE % / I\ ♦+�♦ 1 I 1 I \, \\ ` \\ \ \I \ 1 I 1 I 1 I v a/ , , / / , / ,iIAFp<ER ♦ \ I 1 \ \ \ \1 11♦ r I f' ,/g/� ' / / ' / / ' / / ,' i •♦ ) / \ I 1 I \ I \ / / 1 \ \ \ Illplekaillipprj i ii li l 11 f•1� ' P • ' ' / i 1 l /7 .1yii. • ,/%nip Y�i.a ww—L ,— �1i••41�1■■ ■■1�■■ ■ ■ I� ■I� ■ ••r�.i• —— �■ �■ =��� ��=�>N�� ��+�- i:� �-� ; �. d.'•,LAIN// ,' 'el .Istin•/ / $41 A f i/ NE, /:` A� / " ,' '/ // .di4.4.4/ //491 / , 11111110.-/ \\ ` ` `\ \I 1\ 1 \ `, �'l \\ •` —I 4� / / I 1 I,I � v►.:'11..i.A, / 18 / ♦ .Y \ \ I \\ \\ \\ I \ \ \` \ \ I ' Ill . \ \ _ ` r / I I �5J :/ i i T,(emp CM' / 111 SE \ I \ ` \ I \ \\ \`\ \\ \\ \ `\\ \\ `\ - --\ \I//etail C5VII \ " \ \ t(`�. }C 1101 \ i ; ' ail i, I III• Ir \\ . - • \ \ \ \\ --,_ 7 , - , „, \ 14 \ 44A (‘‘, II. \ \\ \ \\ \ \\ \ \ \ - `\ ` \ ` 1 1 I I. I. 345.0 INSP V \ 1� \\ \ \ \ \ \\ *--- \ \\ _ __ 1 I 1I ■ Rc, 40.54 INV \ \• \\�\\ a ` II \ \ \ \\ \` \ \ \ \ \ \ \`� 1 Ill =3a040 •\ \ `\\\\\\ � et \\`a \ `\ \ f** \I \\ \ \\ \\ ` - \ `�\ ��\ `` -\�`__ /,----' l/' 1 I �IUSTIN M.SHIMNP> \ \\\ ,\ \ \ \ \ \ \\ \\ \ ♦,AA•r• wr♦ \ �\ `\\ _ _ ---:�// ,� I ■ :siscioloAL45:83 1 \ e ,, oo,_, ,, I__ ____..-'''' „-'-' /iIii ' 1P,,, *. \ \\• \\ \ 8 „ , , 5c, -, , .., A \\\\\\\ , \\ 001 • \.\\ _ - - ,\ I i Or O - \ `\\�\ \\\\ \ \ \4111) I ` 1:\ � �� ♦1 \1►rl��) \\ \ \ \ \ \ \ ----- -•------ `\ • \ I. I III �� \ it ,. N - ---------4_______ ----- (r. `.. •• , \ ` „ _ �\ \ \ -,„_ \1 —_ \� rrr _ Mir A� '`I t@ ' ip \ \\ \ \ �"►� -' ♦ - \ \ \\\ \\\`\ '— rrrrwwrrr• _ _ rrrr ... ■•• ■•I ■ ■O `o_�... \ \ �.^ - 41) ?Ain 1 \ `, \ \ \ ` ,� �--- \\\ rrrMrr \ `\\ r i 1 �a Signs i- ad • AZAR�US \ A\ \� \\ a ��� ♦♦ --i rrrrr \ I \ ss AREA 1 K' ' •UT" shall \ \\\ \ \\` ■ ♦♦ . `\�`\ \ - av be post-.• •vand the \ � \\ `�J\\\ \\ ♦1 l� �� _ I / 'l. _— P:o: \ S• e'i Fence �\\\` \ _ ��Er — r ► 11411 \ e \ \\._ \iil\-\,-\\•. ''\ \ CMP T4 P ♦ Y I _♦`-_srli"Fir_ �!'a�0.�_�u_• _ 1.• �••>ts�����a•� ">4�s a-���'/ 1 Q 0 `\ \. Cover �.\ \ -- - - - \ \ \ n �g • DI War V� FOP=350.12 iNV • +,\�. ■, ♦ \ \\\ \ I 1 N ,n / / IN=347.39!NV \ • \ \ I _ \\\ I m / '�(� r -4UT=346.531 - -� - \\ +♦♦ I - ——— \ j \\I I I 1 , . I n ,� RG N( ♦ ` NOTE: GRADING & E&S CONTROLS SHOWN PER 2014 APPROVED MASS GRADING L •YD: E -- \ , ♦♦: , � ♦♦ I\ \ _ I\I\ 11 I I I I PLAN WPO 201400028 & VAR1OE170, WITH CURRENT FIELD REVISIONS. ♦♦ _- lit �, \ \ III . 41 \ N N:—I„silN`\ \'` �•.� ter \ ; I., -\ ',I\ tlk,',,l SOIL EROSION 8 SEDIMENT CONTROL SYMBOLSZ_III ♦�� �� ♦ �44 � ♦♦ ♦ ♦ �v I\I t v 11 SYMBOL N0. TITLE KEY CE •`` �A .I \ - - _ ',\� l` \I��� , \11 ,'� I1\ 11\\\0 1 ❑ ❑ 3.01 SAFETY FENCE e I : Ir .I ♦ A �� i I \ 111 ``� ■I \ ----_ ���Ih / ' 1 I ` \` 3.02 CONSTRUCTION ENTRANCE•N I CE O 411/ \ • \ \� \ _ I 1 11 I -ii \\`\i 3.03 CONSTRUCTION ROAD STABILIZATION ® V / / �/ '" • �i 4 ' I 1 \ \ 3.05 SILT FENCE SF. / 18 CM ■ -- I 1I 1 I♦ Temporory CMP \ \ I \ 3.09 TEMPORARY DIVERSION DIKE DD O ,:t: I Culvert ..'/ ♦ A, J•,.: `+, �, See etoll t' , � 1 \ \ 3.13 TEMPORARY SEDIMENT TRAPST� ;\ ►�►� , 9 ), I l I\ [DRAWN TO SCALE] O CC W \\ ��( \/.•; ,�, •. �''`�\ \- \\ .I I \ o \ ''I I\ [DRAWN TO SCALE] 3.14 TEMPORARY SEDIMENT BASINSB0 O J\ \ 1 \■. , ��`` .., _.• ./ \L I 1 \ t 1� 318 OUTLET PROTECTION OPQ„��JJ' \ s ' �♦` ..� I 3.31 TEMPORARY SEEDINGTS\`\ \ \\ 1/l • ♦��\■�� I �� \\ \;♦ 1 — 3.32 PERMANENT SEEDING PS d WIy�`\ \� \\\\\:\ititik„1 \ -■(, � -` rp �, \ `,\ 'j � \\ i ~\. -- , , �\ O�'+� \\ - - I\`\ CO- 3.35 MULCH ® 2 W � \\\\\\\\\ -'. ' '\ � \\\\ \\\ / (\\�j'�`e� / ----. \ ��� - j II� 3.39 DUST CONTROL DC > < �\� \\\\�\\\\�\\\\ � ' ♦�\ \;\\;\ \\ `\ r = SOIL DIVIDE Date \Y \ `\\�` \ \(� \ \\ \\\ \ `\ SOILS LEGEND -04— DRAINAGE DIVIDE 03/24/2014 \\\ ` 12D - Catoctin Silt Loam 15 to 25% Slopes _ _ Scale p LIMITS OF DISTURBANCE 23B - Davidson Clay Loam - 2 to 7% Slopes 30 0 30 60 90 ®SB-1: PHASE 1 GRADING ®ST 1: PHASE 1 GRADING 238 Davidson Clay Loam 7 to 15% Slopes .':.': Sheet Na seek 1'�30 ScT 1'-30 EXISTING CONTOUR 88 Udorthents, loamy sole I"=3o' C7 OF 13 PROPOSED CONTOUR Fie No. 12.025 SEQUENCE OF CONSTRUCTION-PHASE 2 s o RICHMOND RD LLC Li a 1. INSTALL CONSTRUCTION ENTRANCE OFF OLD LYNCHBURG RD. TRUCKS SHALL z ,GY I DB 5090 PG 504 BE CLEANED PRIOR TO LEAVING SITE. "w / 1 I 2. ADD RIP RAP TO SITE OUTFACE NEAR STREAM. INSTALL SILT FENCE, �^ I I DIVERSION, AND SEDIMENT TRAPS AS SHOWN ON THIS SHEET. ° J / / /' / / / / ' I ( \ 3. CONTACT THE ENGINEER AND ALBEMARLE COUNTY FOR INSPECTION AND Z$ ' if K' / .' / / ' / / I \ APPROVAL OF ALL E&S CONTROL MEASURES. i /' / / , / /-� // / / / / ,- / / ' // / / ,1 / I I \ LIMITS OF \ \ \ I 5 TMi%. G'R INa ESMT \ A 4. UPON APPROVAL OF E&S CONTROL MEASURES, BEGIN SITE WORK. Cy n, ,'// �. , ,.',. /- ,// / ' / , / I I \ I 1 I I D 455 P�4\3-4 6 , C, ��/ , /faPROUT EX.RIP-RAP , , " _ ( , / / APGRQX. OCAjION 11�5' E T / , \DISTUR6ANCE , �� Q T / WITH CLASS I RIP-RAP' , / J , / , / ' / E,t IQ / I I ' I I , . 5. MAINTAIN PERIMETER CONTROLS DURING CONSTRUCTION. / / / / / F•R AM IC TELE HONE do / I / I \ \ / ,/- / / MIN WIDTH=20' / .'/,,/ /,/// // ,/ // /� //7' ELBGRA H WAIF VAI ' / \ \ \ '' \ _ �-rr,h ri.r� t�r'_'Rr,>i ,r' . -.-i.�: .-a�- .�. - -- _/- I I r / ' / .811 1 / III I `'. //1s•��. o/ /DEN E// / ,/ //' / / / ' ,' /' P / '� �� 73[1 / / / /, / ,� - -_`_ -__�__- __ q,{�\ '4iU- _ 'r0 ___ I ''//'/ , �, ��l / ;'1•!`C* ` '/EG£T 'ION/ / ,� / / , i / Y I / ' --- / f\ ` _ \ - _ 1 I / 1 1 �"�-,.� / •D157fU ITS OF / / ,/ 1 / / / I / / \ 1 \\ \ \\ ,, , / --\\ -_ _ ' I III A' • I"w I ''�• I / 400.4. / / AT&,2'FLAG 1 1 / / '. 38. \ \ .- /— \` ��_ --- 39 _ ------ - __ _ \ Tim• / /,/,/ ,/�A' YYY / 4'SEEP PER SONAR, III i i i i — . \ I 1 c ",41/ / / /�/,/ / / / GETECTioS I I / \\ \ \ ) 1 - ! -i \ \ \ 1 aoo- \ \ \ \Js. I • - �I�II a o Ur I i f !UT I ( ',„ �� /,/, /, A. , , /PROM ECJl , ! I \` \ `\ \ 1 \\\ I \ 1 ` \ I I I u \\ zurst / // / i / / /MATTINGWH E I ' I ITRAP DAII ! I I\\ ` I\ N. ` --_\ \\ I I / \I\\\\_ I` \\\ '1 I 1I \\\I / mv3y' iir ! / / /DIVERSION EN RS I` 1 _ \ \ ` I \�_�\ �\ ) \\\ \ \\ '\ I ROUT\•,�,,'-. / / •' , / SVDIMENT/RAP 1 �L . \ 1 ` \ 1 \ I I \\ / \ \ \ I / ti. T I T \ till".........i 1 I \ \\ \ \ 1 " \ \ \ \ \ \ ISIGN TO\, • / / : ; [, / I ` At L\ \1 I \ \\ \ \\ \ i �\ \; I I I \, IBE M VEDLTH1/ / . / \ VsRAPI\ \ \ ( ss �� Dr i /%�Q N. \\ 270'`c 1 _25. \\ \ \ it I \ \ \\ \ \\ \` \\ _ \ .-�. I / I 1 () 2 1 ,\ i / '� �.��f�I� ` I \\TRAP 2 \I ` \\ �I" I u iI �'I N \\ , 1 1 l JUSTINM SHIMP * l6Uf7` �fi.G�r� IDI 41NAGE 1 / /TRAP D.A i i i\I i Lia.No asls3 \ \ ���Q �i.• 1 I II. I a •.3' �, AREA 2.90 AC \ r t \ \\ \\\t -��Y� '-i,, , ! 8 asp 1' �� \ N. \ , ; \ \\ ';:'\' \.\ \\ \1 , ' / II FSs M N. \\\\\\\\>�,\ / , ' ` E P I �\ `\ ,.t- \FUTURE CURB } — \\\I \\\11 t \ / / / I , l 4 hNYAL \ \ . . I ,'�, / \ \ \D4TET1' \ \ 1 1 . 1 / / 1`_ I II I \ , !. I \. / \\I\ N ' ' �\ \ PROVIDE(���EC-2 T'••P 2 I \ \ \ \ ,-r' \ _.>� \ %; TRAP 1 °o, 1 , 1 �\ \\ \\\ \` MATTING'WHERE I 1 \ 1 '! \ \ )�� r \ \\ \ 1`r�✓F h"!VERSION ENTERS I \ 1 I / / DRAINAGE I % 4� 2I.` \ \ SEDIMENL TRAP \ aao' I I + ��'\ \\\ \ ` , ,/ /// / ' 1 /I•'.. I TV \� '�1 / !,;,:' AREA=2.80 AC 1 / \oNr ...lit, \ \\\\\\\ \ T.�7 /' �! I I 'l1 1 '�j' \ \\\ \\ / � / , , \\ / 1 ///' I (I�ffi - r\ \\ \\ \ ` \ \\ / %c \—\ `\ `, l ' ` \ I" 74'0 38 TBRcb - 5Alikk\ \\\ \ \ / / I \ II ,/1 N TOP=93E \`�' \ II11V \ \\ \ \ 111141,.....iii: \ 1 \ , ( t IINV. PRG%` TdcT FL G ; /i \ 3B9. \ `'T\\\`` ` '\ --'V DEE SOppIAR, I(' ` \\ \ \\ I I I , \ (+�' \ / \I •�;111 ~ c ii \\ \\�` \ . I r'TION, 1 \\ \ \ \ I I I ' : / \\\. ' L ,/ IP S '� o i \\\\\\ \\ \ \ \ �1 f�Fj� , /' \ 1 \ 1 ` \ / \\ 1 / FUTURE CURB I1Q 'o\ \ � \ Y.IIi/ I I / \ \ I `\ �- ! UTURE CURB \ Ji t,,'\ \ \ \ I 381rr \ / \JyJm �II � � m\ • \ \ \\\\\ \+\ / \ AT&T FLAG \\\ \ \\ \ \ . ' \ \\ / IIi .!\I.Ty�� c>\ ` �\ \\c\-\ I\ \ \ n 8'DEEP PER SONAR \ \\ \ .3T` \ _ _ \\ \ I' I TO\ --\ Ns♦ \\\\\\\\ \\ T \\ '� 1\_ , .. 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CONSTRUCTION ESMT JL `IM" I 1\1 1111,1\I I lT \ \ \ \�- —T>s \ ----N \ \ V \ I J _ DB 5147 PG 226 ,1 I I\1 1 SYMBOL NO. TITLE KEY ` 1v 1 �, ' STAGING AND -- i�� ` \ `\ 1 ; TM P` 7:,-5 C 11/1 ``I ' v Z No �, ;imp\ ICE AREA /24) / \ I'' \`I I 11 \\\\I 1 \NIt .,. `• RwE�r ►wit , \ \ FLOW .\•' TONY , - ,��I \ \11\ '\11 • 1 \\ PINT I I \ �� 1 \ 302 PAVED CONSTRUCTION ENTRANCE CE CF:) ?) 1 \ \ `"\ / / DB -r I L J \ \\�' 3.03 CONSTRUCTION ROAD STABILIZATION 0 j, Q 14S \\ \ VACANT BUILDING ,- I I I I \\\ \\\\ CC O III _ / • \\ I , I 1 1 1 ONE x —x —x —x — 3.05 SILT FENCE SF W ^1•0\\ / I 11 i 1 1 LL J \ Ae I \ • t�� •r'�p, \. 1 I ' ► / ► 3.09 TEMPORARY DIVERSION DIKE DD Z kql [E� N. i 1' • Wil.•N�©. 11 t I I 1 11 4 Q \ "4 m I'' \ \ I I I, 1 \ 6 3.10 SAFETY FENCE J \. I �'N. I \ -360-�—— ; I I \, \, a \ N 1 � `,�,.4\ \\ t. \ I I \ 1 \ [DRAWN TO SCALE] 3.13 TEMPORARY SEDIMENT TRAP ST W I ■. `'\ ' \ /M.H. \ a / \�\ a © �, �� `- I 10l 1 ® = 3.31 TEMPORARY SEEDING TS ;;7 I, m *\; \ .� — 3.32 PERMANENT SEEDING PS Q - --- �•. RIVER } \ +d' j Ir „ti IT . MULCH U\ 3.39 DUST CONTROL DC 11�30�2018 1 h \ --0.,.\ 4 \ , Scale I \ 0 0 0 TREE PROTECTION FENCING 1 =30 30 0 30 60 90 FIBER-OPTIC _ , ,,,, ✓. .`'�� \\ `\ 8' \ Sheet No. Scale 1'=30' MARKE -R ----- __- ,""� N. ; S \\ ' r ' r ' . ' .s_ LIMITS OF DISTURBANCE: 4.00 AC C8 OF 13 `\ i ' ' `-_- --------- SEDIMENT TRAP DRAINAGE AREA File No. 12.025 SEQUENCE OF CONSTRUCTION-PHASE 3 V a / 'i RICHMOND RD LLC 1. MAINTAIN PERIMETER CONTROLS. INSTALL NEW CONTROL MEASURES AS 0 GY / , DB 5090 PG 504 SHOWN. v w / 1 ) 1 I 2. AS STORM STRUCTURES ARE CONSTRUCTED, INSTALL INLET PROTECTION. ��` n 4. INSTALL SILT FENCE ALONG FINISHED CURB WHERE ADDITIONAL GRADING ! f / // / 1 1 iI 1 l ACTIVITY OCCURS ONSITE. (� a / �� ,'//,�� I�',' / , .', / / /// ; / / / ' \ I --\...._. 5. SITE MUST BE FULLY STABILIZED BEFORE REMOVAL OF SILT FENCING. o / , / ; / / / / / / l / I l a 6. AS AREAS ARE BROUGHT TO GRADE, APPLY MULCHING, TEMPORARY SEEDING �l O I S '/• // ( - --I t 7 7, / , / /.' // // / / i i I / \ I �Q SA e AND PERMANENT SEEDING. 1 / /' ,// ,/ / //'/ / J/ , ,/ ,/ ,, / / / / ( I 1 LOW MAINTENANCE I 1 1 I ! ) \ COU�lD CONVERN�E - _ -- - _ i /, _ _ r _/- �G-,(_1-L�T�'f- r"./3 _-7.- J / / / // • IN N (iii \ I I ,� ( `�\ GROUND COVER \ / I / \ \ r�,t♦ / / 2 // / f�� / i // / / / / /f , // o°'�j / / / •OUND LOVE l 'L.- ��', •-Zr-r ,s _ a - �\ �. '\ _ -- / /' ���jII�F1,1y,'' '\ 1 1 \ 11n / ft� /7—./ / f r/ �. f r>/ 1� , / _ / o-�, - - `��.�` - .._ fps' ` !I \_ a r < 1 • ill lir IlV v - • �V a ✓ r / / ,...0,„.„,...- i 1 �D t '+ / / rr ti.- / t \ _ - - ---- --- - -- - w 'r r / .tom -o - --- ° _- \ ,...._6•....4 I „, i •� 1.' I ,, / / / , ... M[aJ[1'1 - \ J:i Ir.: - �I �\ ..p. \ ____�__• Emma \�+.\ ___ 1 I f �� \, `r +gyp /' s�.� / ;�; TS '���, � -�, i' � ;� �__ �\ "' ,0 \ �.i•r,���,'i// /� /y � �� � 1 � I�� \ � `�'Y�r ail - . -',t ■ II�h rip aElk � � v A v NOTE: INLET PROTECTION � ‘.a�� 7::::•vT' �;� v, � D 9•�I ; v� 0 0 v ` 1401l♦►k / .eI i •• �� It v +1 v gm . w i l o / / vI\V A- ._ LOCATIONS AND IRoL+ 1 \ IP ■ JI I g \ y ) �a I I 1 `�/'�r ill j ♦ /1 / / E,� ss k ASITE PLANS LTH irj. IP S / / �! I\ \ „��1111� A�1711 l i "i �I'll 49 f�c l . +,_, , \, / [C' .� - . � f \ '\ \i 1- y \ �---� ` um. 141 I 'r NOTE: PROVIDE LOW ( ,.�,I� 1 i •i 1 O q 1 ° 1� v 1 V A 1 '1 I Ajy h MAINTENANCE GROUND • 4 / 1 1 1 II I I I�., JUSTIN M.SFIIMP +L•3, `l �, 1 , q \\ \ I \ ` y� I o\ C COVER ON ALL SLOPES I• ,/ 1 Il L+a.No 45183 +`,: a \\ \ \ \ I 1 - � \ STEEPER THAN •3:1. , E3••; �.0•;'./. O. •I I I I 1 I .e a t` \`` I , \ \ \ \y J m PS O \ f SEE DETAIL 10. C9. �' , //, • /- // I I q6l .`'t. P0� \0 d i i \\ \\ ` \ , \ . j\I i \ .. s f ' \ ,/-- `� 1 ' 1• ' �s`\'$xVAL 6 ' I!1 '1 `\ v e j \ r I ' 11 t v \ TS ---/ /'�// �� I ! 1 I v v y> :'\7� ' ' It I ' II 9 v -vim• l l 4, .'.�' 1 '�` I /i A/' \ \ \ •\� �` tl'VED sLOt ES , • li..,, 3 ` IE \ tali /,'/ ril irili •l r. I 1 / 4 \ywp� i���� ����� V �'^�� ,� ql!► v l fitti......7,,. 1\tit - a �<I' o h 1 v t \ i\,` .v��� --- /I ' Ii / 1 / 3 ° .. it�A�� 1 i._._,am�111h4- M. _L!Q,�:i�®_ - �7 f 0. I \` a O \\ \\\ ,\ �1�.1,1�1��1 \ t\ I ryJ � � + �\n`,41P..••.�����L`� s� . • .—fe d \' rry by 0�3,3 o'v i%,!,:::5$ \ \\.. \ \\e \°°., Low MAINNTE cl\ >C Ta � � ...- -- O / \ . `. \\\�. y \� \ GROUNDICOVPR \ % \\. r ♦� 'j6 � � I --- --- --- MEV EIIIIML I .y ,, • • • „_ =___,N.,,,,i,. ., -___ _,,L) , .. Oa \ �:� -sso\�`�\ i�� ♦ ♦ '{ i - !� �q ♦F i°�,� T - 1 / i _ ` No - __. ,..: ,— / -1-- gut:A, 000(--ir- I \ \• \ \\\ \ \\ \. ` ` ♦♦ § LOW MAINTENANCE (J00 •\r'•• k° `\ ■ ° - , `1.- J90. [� .S. 6•J,, \\��`\\\\\ \ \ \`\` o. GROUND COVER i i/-w� .,•,fir ©, \ \ \ _�.--_ ____---``- \\` ® __if s\ --'., - -,, -- '' -- --.-- --390' . _ \ . ,rO qq -Nna u, 49 s y vv v . . „ __,,<,74.9"7" _ _ ' '-'_-.___-...'--_,,,-- _____________________________________:____________-_-_-_-_-_-_-_.2-_:•1 ,___ ,... -W.-1..,A\ ------ . --- '_!:.$ _. _ __.... 2 , _ , , ,V 0 �� rt o ,d �iiii 9 ter" SF � i '6'.....* 41:07,z,‘ -;.',.-.,-,,\-„\c, ,\'‘„''',...!*,•7..,...,,tiairtr...,*07.' ii,;' _i . CP ‘. 1V., ,‘;‘,`, -. ,'\'-, illiple4P''' i /, _\415,\ _, . " \s€L.,\\\,‘‘,,\ , IA No• :''. , ',.:1":7( ir / ( - --- ---- a` --- _ - ---_____.-\ i - -----:...• ,ma _ 1 mm 1 O\ _tt, \ ,j,i� � ( q — .yu,0 _T._ a p I'\i 1 SOIL EROSION & SEDIMENT CONTROL SYMBOLS '16. �� � - v - —TJ/{FI�- I 11 V I M � ;�,,` � II , , --- 1 L I I \\ 1 tl llll\1 I SYMBOL N0. TITLE KEY V a�'! 1' I�t j4 i " I I I TMP\7i'-5C '\ I \1111 1\ 1 Z • &Al' / !it v FLOW 128• STONY 1 'vv11VwvvvAxI '� l �. — /��I 3.02 PAVED CONSTRUCTION ENTRANCE CE \� ' Q. 0:1 14 'k \. - POINT LLC ' I \\1\\1,1\\\\\I\\ 0 1 \ DB 5147\ ''G 228 I" I ' I \ \\\ ' \1•. iteID j1, u \ \ ---\ 1 i II \\\\� 3.03 CONSTRUCTION ROAD STABILIZATION N \*\ \ 1 � \\ xx —x —x —. SILT FENCE*\ l w ' ► ► 1 3.09 TEMPORARY DIVERSION DIKE DD Z ♦ { \ 3.10 SAFETY FENCE A ♦ 1 \, \� ` \-360 'i I ' li \ 3.13 TEMPORARY SEDIMENT TRAP ST E. \ { f �.�,y'\ \ \ 1 [DRAWN TO SCALE] W �r\ 1 ■ \1\�°- . * •>- \ I ' I M.H. I 1 d ��..■■�� M1 i ♦ { �© ,w ��`_-____ 111 /tot + '\ 1 _ ® 3.31 TEMPORARY SEEDING TS mI \ 1 \ 3.32 PERMANENT SEEDING PS > Q • NDING �I♦ 4.0 ``• \ I , \ \ \ _ �$ N RIVER ' \ X'•' 1 \ -.--�� 3.35 MULCH LANE{ - I \ \ Dote a� % ♦ ' 1 I I \, — 3.39 DUST CONTROL 11/30/2018 /' h '�.111\�° 1 1 DC :::: • ' 1300 30 60 90 \ O O O— TREE PROTECTION FENCING 1" 0' • \ No. Scale 1"=3D' \\\onmessm ` ` S --_ �■ LIMITS OF DISTURBANCE: 4.00 AC C9 OF 13 j \ \ �""..�\ -" - File No. 12.025 1992 335 C as o CONSTRUCTION OF A SILT FENCE v (WITH WIRE SUPPORT) TEMPORARY DIVERSION DIKE �' 1n w GRAVEL CURB INLET SEDIMENT TABLE 335-A .,1 F.,z 1.SET POSTS AND EXCAVATE A 4•X4- 2.STAPLE WIRE FENCING TO THE POSTS- W TRENCH UPSLOPE ALONG THE LINE FILTER ORGANIC MULCH MATERIALS AND APPLICATION RATES Compacted Soil 0 OF POSTS. r `� t ZH 18'min. 0- -f- MULCHES: Per Acre Per 1000 sq,IL NOTES: �FIoW C , �-._-..U.i_.. --:?„. 4.5' min. -� ? / / /JStraw"or Hay 11-2 tons 70.90 lbs. Free from weeds and coarse m t //' _ _ /� (Minimum 2 matter. Musa be anchored. DIVERSION DIKE (DO) ' /� I� /� on I I I -� tons for ) Spread with mulch blower431winter cover or hand. Net To Seale �- Fiber Mulch - Minimum 35 lbs- Do not use as mulch for o C k 1500 lbs. winter cover or during hot, 1'j�t p2 / /\ dry periods.. Apply as IBC 1 s� i FLOM III 4 I\ hhh '" ��` slurry. ���II) V N • Corn Stalks 4-6 tons IB5-275 lbs, Cut or shredded in 4-6' PAVED CONSTRUCTION ENTRANCE Z 6 lengths- Air-dried. Do not p"w 3 ATTACH THE FILTER FABRIC TO THE WIRE 4.aACKFILL MID COMPACT THE use in fine turf areas. Apply GRAVEL FILTER `y m 0 FENCE AND EXTEND IT INTO THE TRENCH EXCAVATED SOIL. 12 with mulch blower or by `o RUNOFF WATERS - raj•, WIRE MESH hand ¢ --�- / ��1�a--R±�� FILTERED WATER N i �gr`r)7' Wood Chips 4-6 tons 185-275 0na. Free of coarse matter. Air- STONE 70'MIN. a m �;��tb�}t#m d dried. Treat with 12 Ibb CONSTRUCTION UG•]oN i 3 sM-2A ASPHALT TOP "' • =IIIIt=tu; _A�� ��lo:C��� 4 nitrogen per ton. Do not /�COUR� li='lIH 0 A• IIIII ose in fine turf Brews. 2x I 2x r-EXSTmG /-� /I�I /II��I I •I III IIIII 0-IIII mhamkt th for blower,ch han, i Apply ��� �r .. .• •/.. .. .x I. it PAVEMENT T II _�_ E=S�I��� by . -..-... ... L H _I -I 4 = -I / SEDIMENT lII > r - Bark Chips 50-70 cu. 1.2 cu.yds. Free of coarse matter- Air- ••a-ua1.21A AGGREGATE BASE 0t4.4� `f� �IIII .' FLOW �1= k a or yds. dried Do not use In fine E(El)F •' _ I /111111= -- Shredded turf areas. Apply with 0 2 - I - CONCRETE GUTTER 2 Bark mulch blower,chiphandler, V It CURB INLET NSTIN M SKIMP III I• or by band. STONE 70'MIN. Lrc No.45183 EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. MINSSTRUL'IITH ASPHALT PAVED 0, ACCESS WASHRACK OA ' SPECIFIC APPWCATION •When fiber mulch is the only available mulch during periods when straw t_P4, FILTER FABRIC should be used apply at a minimum rate of 2000 lbs,/ac.or 45 lbs./1000 sq.ft T' S ��i�� p�`' f! JJ^^E%ISTR/G hENVAL THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS ••t-i/•4L-'W- 11 i E �PAVEMEM III I w� WHERE PONDWG IN FRONT OF THE STRUCTURE IS NOT DEBIT TO CAUSE I hr\1"1tzt ilililili 2% 12'Mal. E INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND UNPROTECTED L`!h AREAS. •GRAVEL SHALL BE VDOT#3,#357 OR 5 COARSE AGGREGATE. Source: Vs.DSWC *MUST EXTEND FULL WIDTH �--� ��-TO SEDIMENT DRAINAGE 0 SILT FENCE (SF) W. WIRE SUPPORT • MULCH HING (MU) OF INGRESS AND EGRESS 4 POSITIVE OPERATION TRAPPING DEVICE eale Not ToNot To Saab ®INLET PROCTION (IP) Pl8l1 Gy Not to Sala q 12'MIN. POSITIVE DRAINAGE TO SEDIMENT O cU u u o TABLE 3.39-A 2x TRaPF,ING oentE .c ADHESIVES USED FOR DUST CONTROL • Nays _ .,.• •r-..• al- v 0. Water Application Nag -- ,- - -• •. - '0'0.1$ SAFETY FENCE -5- Dilution Type ofRate FILTER Ln e u E Adhesive (Adhesive Water) Nozzle Gallons/Acre SECTION A-A O Anionic A'Mi'Miamian wain'tap of 1 inch must be installed with a minimum].1 inch baIcock V /` Asphalt Emulsion 21 Coarse Spray 1,200 shutoff cake supphshR a wash hose with a diameter of 1.5 inches for adequate ■III ,,, •• I Latex Emulsion 12.5:1 Fine Spray 235 constant pressure.Wash wale most be cartie<I away from We entrance to m R en.0 0 0 fit« .. lima P Y appraled settling area to remove sediueut. A@ sediment s1uT0 be preceuted Amu Of Ch O o m a.�.I BBB. BBBBBB� Sediment Trap Design Data - _ - -II ill !MIN Resin in Water 4'I Fine Spray 300 eutamr<.ctanw drams,dacha or vratticaiPseS. 13 o 8'8 Weir We Wet Bottom Dr Dr - • ■O■ PAVED WASH RACK OH Z 9 DA DI y (sqDry D2 Cy Top SA _ - - - ■■. ...it - Acrylic EmulsionNO E fly _ o0 0 No. A B C (.) (t) L(H th (Acs) Rol. (f1.) VP 0 SA (it) (sq.ft.) - r .11.111111. .. iiinlj;.:1 (Non-Traffic) 7:1 Coarse Spray 450 eama'n ft i ( ) (eq.) (rov) ft.) (Rep) (Prov) "V1 374.5 376.5 378.0 4.0 3.0 16 B-2.80 187 6 2 0 207.7 2530 187.6 1.5 195.5 3960 - - _ -11 DAc lic Emulsion � I (Traffic) 3.Sa Coarse Spray 350 2 360.5 3625 3640 2.5 3.0 17.4 2.90 194.3 2.0 207.7 2530 1943 15 195.5 3960 - - Y _ • PAVED CONSTRUCTION ENTRANCE (PCE) - `IF I1 -'' DUST CONTROL DC �` . Q ELE o 11• z 'I �lwi'i'i•'a`\�r Go Not to gala i ELEV. Tw Nina•0,0 :-'-� •'1 i EL-c '%�.�r,, :isisi:::::::isi�i:i:i•i i i�i i°i i i�i i i i�i:::::'°:::° PERMANENT SEEDING SPECIFICATIONS qav STptAGE t1 H ••••••••••••••••••••••••••••, •fir•• �•••••••• W�•WWW�••••4 February 16 through April 30: s7 Cu.ro/ACRE -,;\��feaAw t••••••a ••��•�•�•, -�,T.4,••� i•••�I WWWWWW�•••�• Kentu Kentucky 31 Fescue- 128 Ibs acre; Retl To Gross-2 IDs Dcre; _ EL-B =N Vita.tt� I•.i.•.•i ii.•.•.•.•.•::•:W: l.W•r 8..4411-W1••W�•�.• Annual Rye- 20 Ibs/dare WET STORAGE e•�•�•�•�•�•�•�•�•�•��•�•�•M ..••1-���=�)i•M•�•�•�•�•���� =�•� 67 cu.ro/ArAE •-•-•_•_•-•-•-•.•-•.••.•_•_•. ••.•.•-•_I.•.•.•-W-•.•_•_•.•-•_•_ TAME 7.7tt May 1 through August 15: O TEMPORARY SEEDING PLAAT MATERIALS,SEEDING RATES,AND DAMS Kentucky 31 Fescue-128 Ibs/Dcre; Red Top Gross-2 Ibs/acre; `•� FILLER CLOTH PERSPECTIVE VIEW Foxtai Millet -201D3/Dcre. r (EXCAVATED) GRouTaf EL-• Henan svwxF Mw ELF.V SEEDING PATE NORTH. aOUTTO •T August 16 through October 31: F' PLANT •SEE PUTS 313-1 COARSE AGGREGATE• CLASS I RIRRAP eEM !'5x.: T. SPECIES wT Mh yin ens . Wh Kentucky 31 Fescue-12E1 Ibs/sae, Red Top Gross-2 Ibs/acre; Z \ MinM r r r < r r Annual Rye 20 IDs/Dcre. CROSS SECTION OF OUTLET �' �' •'° •M NI 4n0 Pn inn' \ November 1 through February 15. `� wn ..L�Tror1ro AR.. sea x x V•1rn14..kerl••.K Kentucky31 Fescue 128 Ibs ocre, Red TopGrass 2 lbs/ acre;I•/\ �_ (�� is Jwm Om) / Winter v cuss R.N. s► "►1 '-. S � aro• .2 to taaTror. a.s to x X x - X rlrrlr•a r.�..w Rye 201bs/acre s x oaAiwc[:qu `- \� '.'4e t - _ •. 1 •r`��s4) *am �r`� MULCHING SPECIFICATIONS 4.4 U ��•�E, gx Ac) �� xql, e,'A ':•a• GERMAN MILLET 30 RN. wR lIL - x - • x • Wen.�L ur•Ra Strove or hay at a rate Of 2 tons/acre Must be anchored. Spread with CC 1, Y .� >� /DIVERSION P - TO.s WC E.+I+r� mulch blower or by hand. \ DIRE I. _ O O •r• ' -^ !`v�i►� `�Oj ,;i ANNUAL RvsORASS min. MM. X - x x - x M•re4a4r�x..w LIME AND FERTILIZER SPECIFICATIONS U. J `�_� �, '� �� �/ mAa•daamm IeaLewP•• k. Line and eFER IUZ needs SPECIFICATIONS: be determined by sail tests Sol tests r� .i' + ��\fir , �., 1s I. - - - LL�---�- a �� '� - / •NFFANG Sys : x • %Noe PAL err may be preformed by the CooDerative Extension Service Sal Testing ��` Itli •� ��- - • L°VEORA.Sa lal TalAarAR444r Laboratory at VPI&SU,or by:reputable commercial laboratory. �� _- t.. ' m.oil.rt d.MW k• Information concerning the State Soil Testing Laboratory's ovod°Ole from Q Q • ��i�A::�.+ �- ... -. CITY n Agents Under nusuol conditions where- r•� �. /i Extension g t at possible J it lu�. x x lye. test the fol o it amendments Ty x x to o so so me ent5 will be applied: �. xOREAN N. obtain e a ed:n� �. w•� in9 PP -r �� �- '•:ti•I sea - �. ..•.I Woo G � IFSrED W - �. E k- � ry F din Seeded u�. nt See See a ores she be limed - - � or P ane a at o rate f c \ g: 0 2 tons d ti: � .ua r r.a d�4a x®.a �_ d fertilized f 1 at ate o 000 Ib Der f - - ers. per e o 10 1 1� � v:. r P acre, 20 0 0 P ( S� '��' �-0�-.�� 'I:••! _ -+yI •,,. �� Ibs per 1.1100 square feet), equivalent. d J •�j L'y _ (.oKUL 111E - 'jN I'• ,_� •No eO Piedmont,Id Mount=Teem,5.TE w S.ZI-t and 1.2J-I- For Temporary Seeding: Seeded a shall be limed at o rote of 2 tons m COARSE AGGREGATE / •• ••' ••6'MAX. .P�) pOFary g: C P May Sr I PicdmonC and Come%sin. \ /// '- •5'MIN•••••,•- N.. e` •S be .cover seeding. per°ere,and fertilized at a rote areas 600 Ibs.per acre of 10-20-10(10 J °I v o FILTER,Lan' //\ lul�•a 4 MAY fie u¢d A a mva sop wish fMlaWNiog. Ibs per 1,000 square feet)o equivalent. 0 /�� PERSPECTIVE VIEW PERSPECTIVE VIEW % Nay°` e "e d'" Q i E • - aMrmtbegmeebeatendn.dee. OW MAINTENANCE GROUND COVER PLASTIC FENCE METAL FENCE SOUTHEAST NATIVE GRASS SEED MIX(AMERICAN MEADOWS INC.) For slopes steeper than 3:1 grade,Mix the following seeds at 30 Ibs/acre **COARSE AGGREGATE SHALL BE VDOT#3,#357 OR/5 each; Date Virginia Tndrye(Elymus virginicus),Little Bluestein Grass(Schizechyrlum 1 1/30/201 8 OUTLET (PERSPECTIVE VIEW) SOURCE: CONGAED PLASTICS PLATE. 3.1-1 ®TEMPORARY SEEDING (TS) ca erium),Purpleta Tridens s p p( flaws),Broomseage(Antlropogan virginicus), VDOT ROAD AND BRIDGE STANDARDS and Indian Gross(Sorghostrum nutans) Scale VA. DSWC Not To Sada OTEMPORARY SEDIMENT TRAP (ST) Sheet No. Not To Scale a SAFTY FENCE (SAE) PERMANENT SEEDING (PS) c 1 0 OF 13 To Scab File No. Not To Soak - 12.025 405 <0 400 ------- IW/ _ -1WI--�1/-iLi--Yli/- INI W -s i �� mil•:: • 1,J• ==llo= -'=39 ^w 395 - M --�- __ . .- .-� 13'.' = 5 d Z /IIIIIIMMIMIN II 390 �` 390 - _- --. ... _� 1- ; Elolt= Z 2 390 -___ _ ..... Ate'-1. i.�-moi_-��_I U • I .,=,N -..._- .. _ . �- _- i- ]_ iil 11111i1111©T-1 -III 9 385 = --. 385 385�o .. - ----- - -_ ............ = :� - - ' ,7■i © -_•- 365 b off- _ - m- ____ ■ ��_ 5 �� i %q ENE w '-;moommirme.a= tAiii- �3Cl�1__:.immaamommigi ` 380 ___.__-. - __ -._..- __ _- -- _- +„BB➢E.- -- -__-- �lAJiV� y_-.- .. �� _����ni1' _ 380 Irma ri' III 380 '¢o z e z I - 4...... -S`CT� a =_= it 375 -�n.N-9GA --.--"'--- ,h.9Gx -- - P ^� hommin -- ^_� LYil� ��,_ � 'L usimml }]5-- 375 COMPACTED _-i'U :�_.._.. ---'� .lam 1 .,. 2hiLI�Yr1��J_` -- -r'Ii4 �EMI 375 > 370 _ - ::: 370 11111101101 JLi11N0ER�--- rNIWlr71171i _ s _ 02 3 1 �'i -_. j M1111111111 NMI , �PE � =I. 30 yPAN6 L©i 365 IIIM �� •i _ 1� iYlYi�1V�� -..'. �� 1/- =365 I w 365�11%(\�l11J�N �- I�y-�J/V1.44r�1/-I� 360! '� 160 360=��� �II�! .L�6'iiiil�yl , 71 Ri_1e,,, _-_-- P _. __ anominimminmmmnmammammin���-� -�%0 4- i� = miL1f.Lif;11/14.15.hY11'1/a/GINC MINI �- M�'� =. R� -- -1�-� �b P U 355-ice -355 _._. EllEammesemo lee meneeeeeemmemm• Ill,• z.. . MEM __- �-'- ' -- _ 355 meeeemmilimieem 350 10 -j50 350 sN i __ -- _ __I-��-=--�150 10+00 10+50 11+11IT �Iz - --� -I ---- --- t. ®STORM SEWER PROFILE: A9-A9A 10l00 10+50 11+00 11+50 12+00 12+50 13+00 13+50 „+00 ....14+50 15+00 15+50 16+00 16+50 ,]+00 �w� �' HOOIZ 1=30 `�"'=10 STORM SEWER PROFILE: A5-A13 u 3USTIN M SFQMP> HORIZ:1=30'VERT.1'=10' 385 A2 C ® 365 A Lac.No.45183 74 rw 3441. p 40D 400 380 -- .. 9 .�r -• 4-"U.,O{o Oe.pE +F1 ♦ S 4 ...Rnm.:LOT 380 iOFIAL `Ai =—� ----- - c'rr•, aa W .y• R n a' g<' a 1• ° 385 385 395 Mir '^e 1395 ____ i ui,"r. . 9. 1 �� � a: -ry 3]5-._ - rut 9 z _ .•� I"T,I- 3]5 rr� 1:'g �/ - 370 • uNu[� a f5@ ' .Z AY ` 360 © CR. _ 12 390 ,.3.a 4 R40 - ], `.' -r 370 • R8 I1NAUL R 380 / -- _ - _J90 UP111RNC0 EX. "u� =.ti- `a� .�: :I I�=: �z c' /5253N1E ' n 365 _ - 365 .', COKR 365 375 - MN�i -- 3,5 370 `1 'N l 380�_+ � $ --- _I' 380 d"- [M - 1 �.�.� :i c c c o • � �- 111 �■ 360 I^L urcAut 30 `LS %CW 360 e 370 -'•�-] �z..r J- 111 11 /i .o 4 90E5 e � _ --NI�1� _ ��"" 'W.'. F 1in4 IN fIL1E8 11_ = - .l -. - - �/1�11 :.i_ RTTit! - . �y per/ j [� �-0 0 0 365 ' 365 375 "a=�- 1 �'�`^r!.�� __.• _ a 79-tFHS'W3�E a_i.e% _.__ ]► '• PS 355 w� ��.]l_��-����I. ---_3551NL '`I 'o �11-� - � st4R� i41. MUM: 'im - ...,• r r .. - 11� _ • - p..at.a•a4r•, . :_ � �.� ¢ Eli- u".r S€F f�knl • 2 - w�5 HD,C Nfi-__ - __360 370 IIMMII I�11YT3>• , - 350 350 'o'o�`! 360 n=p t a0S F F n . MI "1/0 -3F- _ _ ___ ._.__. 20 370 _bl DI Yt.• n'�.r F10xiPALTE'p -9aAWK D+920._ cA CA cot E z �- o - _...moil• - 4a� .--- _-_. __. ____ ___«f / _ .... ... -605800 HCCESS - H 0 �� .o -__ 345 a ._81558S_5fQNN._I._.-345 M o 11 4r o 355 355 365 �ii_.. _.. z .. $ 365 _ - ebb- e - r yfISERS-REOtiMtEfr- . 1 -' 760 �_ il1a411/VJ .....- _______- _ ___ -_ _ -_ _--.__._ - - -- 340 y - __ _._-340350 m m m w rn 10+00 10+ -T - - y0.H0Pb o 0 0 0 0 "e'� NP'S3� COUPZOtE$- .- _-.- av [� mom=m ry ,.. 15x-- __-_- - el 0 25 .� _ - �J 3: r -.- 335 ^ z 335 o f-n_o J55 Lx _.. _.._ 355 - ,rie� �f - p 1 FlCL n __ • _ 6.- o000 0 350 10a00 10+50 -... It+ - - -.-. --.. 1'i -... .-_ 330 100 Z 10+50 11+00 11+50 330 d_Nne� STORM SEWER PROFILE: A9-A9Z00 11+50 12+00 12+50 13+00 13+50 "'� 14+50 5+6� ®HORIZ.1"=30.VERT:1'=10' STORM SEWER PROFILE: Bl-B7 STORM SEWER PROFILE: Al-A4 HORIZ:1"=30'VERT.1'=10' HORIZ:1"=30'VERT:1'=10' 385 O- 385 370 �P1� ��C2� �}� 370 �� / -- -- --/ S----605 380 a E 380 365 :� , �,�q 365 B -- - --400 »", ` am --t"L4 - al, uc 7 i"1 _ . __ s n m 375 0 13d 375 3605 "- -� 'a��"S'rvr r'r ___ 360 405 405 � �^ 395 EW ,� a ` _ s�<s aen„c ORnDE) ;1 { -__ -•••r5 -4" - _./_._.. -__- 90 m Itt 370 ORAOC 370 355 - "ea 355 400 o'Tw Fj -_400-. ,,,a; N ---- - _... L ._ __ _ __ 350 395 .....4a. f R ^ n 365 365 350 ¢ _ - --- -- 5 s: mii u R 395 • �� _ __ -- b 8 J 15' S4 8]S1 U 1�tIDPE O'00' '^.^ R ,Z n �u _. m 15 af014 4 1 S c) ,-y/rrn.rir5, o__",____��roc n n w. WIS n n HOPE 0 t,WT 4 `.. F� 360 345--- - = mm g -- 345 390 390 �j ::%f F,IOPC 1.`2' STR _ - 36 360 e A .� �� ,W 380 n-,_� a ^ =e 456,4 �: � - , �t,r 3r S-c*o .o� 124te 11 IB a awx 355 355 340 __-- i 1- Z L 1- ��f�}40 385- ° 5 385��1p -�', __ 3)s r 5 350 10+-00 10+5II0 10+50 11+00 11+50 12+00 12+50 13+00 380 10+00 b' 10+50 11+00 11+SII0 ':' 10+50 11+00 11+50 12a00 12+50 13+00 "1}i�70 O SEWER PROFILE: B1-B1A STORM SEWER PROFILE: C1-C4 STORM SEWER PROFILE: Dl D2 HORIZ 1"=30'VERT 1'=10' D 00 STORM SEWER PROFILE: All A11C p O 4.4 W OSTORM HORIZ 1"=30'VERT:t'=10' BORE 1"=30'VERT.1'=10' : HORIZ:1"=30'VERT.1'=10' U. C J Cr Q , Q J O. IllO. m � ;4.;:.1 J Q • Dote 11/30/2018 Scole Sheet No. C11 OF 13 File No. 12.025 f 1 °3 ,' V 0 LD-229 Storm Drain Design Computations ,t' y y C1 v „F Pantops Corner • I 117 �(^ 2 From To Catch. Runoff Increment Accum. Total Total Total Up Down Pepe Insert Pipe Pipe Velocity Flow lime DRIP LINE R�.1 _ Structure Structure Area Cod AC AC TOC Intensity Flaw Insert Insert L \1/4 `- -`� I1 I1�t171 n o Length Slope Diameter Capacity Increment / v w (ac) (mix) (iNM) (cis) Elev _ Elev. (R) % VN Ws) Ws) (min) �Ir l E• 1 2 3 4 5 8 7 8 9 10 17 12 13 td 15 16 17 Per % / COARSE VDOT t _ lb t D2 01' 1.66 0.69 1.15 1.15 5.00 8.81 7.86 130.20 389.70 34.31 1.46% 15 A5 7.8 0.07 % NIR �) It /I/I�I� AGGREGATE - ,,_ - O 4 r r A13 Al2 0.67 0.83 0.56 0.56 5.00 6.81 7.82 385 50 378 00 107.73 6 98% 15 16.9 12.3 0.15 SNOW FENCE ` ` _ _ _ e i Al2 All 007 0,74 005 0.61 5.15 6.77 4.15 377,60 376.20 4074 3.93% 15 14,3 10.3 0.07 4 n - - 11 A11C A118 0.14 083 012 012 5.CO fi. 1 0.7 ,70 - �IIItt 8 9 383 a0 38 102 00 1 27% 15 7.9 4.1 0.41 �' i' --- ''11'',, � " ,I � - � �I1111 -� l�yr •1111 l - AitAlA 0_24 0 „,,,.,.„,,,,i,„,,I,,,,,, 111111 � �I -- m B A 1 02 0.77 0.78 0.30 5.41 669 2.Ot t 380.20 _ - 1'`38 50 85.59 1.52% 15 9.3 8.4 0.22 - - ��11t,18•�1�11 � �I A11A All 0.00 000 0.00 030 5.64 663 1.99 38000 376.20 12403 3 co% 15 12,2 7.1 0.29 II I / 2g 2 - '1�.'•'.1II�'-"Iv.. - ' Ail A70 0.34 0.81 0.27 0.89 521 6.75 5.99 376 00 373.70 69.94 3.29% 18 18.8 10.0 0,12 NI'•j I112 i I l Ili� I /arI �� �I� lulu_�11lu ll�u='11� F A 10 A9 0.06 0 78 0.04 0.93 5.33 6 72 6.25 373 50 363 00 95 30 11 02% 18 38.7 17.7 0.09 2 11.4 0.07 \\ I r OP' ❑ Cr......... -�I��II) o ASZ AOY O 40 0 89 0�35 021 �35 S.00 fi 81 2.40 365.30 363 60 13 00 49.974 14 12 94% 12 15 7I 7 12 9 0.02 'k�©I�'+,,y?r ; ;:; :< :;{> 11461 I I I ~w e•y1Tn1N11 \\lJ - n A9Y A9 0.12 0.73 0.09 0.44 5.C2 6.81 2.99 36290 362.50 222/ 1.80% 15 9.4 6.8 0.W \ } ell CORD FENCE al "' CORRECT TRUNK ARMORING Q A9 A8 0.25 0 68 0.17 1.75 5.07 6 79 11.89 362 30 360 60 45 30 3 75% 18 220 94 O.OB BOARD FENCE I :.5 �� M. W 5 AN Al 0.09 0,53 0.05 1.80 5.15 6,77 12.17 360.40 359.70 6788 1,03% 24 24,9 8.2 0.14 %�'• '' of r�ti'�5 " TRIANGULAR BOARD FENCE 1A7 A6 000 000 000 180 529 6.73 12.10 35950 35790 15365 104% 24 25.0 8.2 0.31 PLASTIC FENCE TYPICAL GRAVEL STRUCTURE r A6 A5 0.31 0.85 0.28 2.06 5,00 6.84 13.69 357 70 356.90 72.05 1 11% 24 25.7 8.4 0.14 1 O 5 A4 A3 11.71 354.CO 35213 1592 11.75% 30 152.3 184 0.01 CORRECT METHODS OF TREE FENCING F u A3 A2 - - - "'," 35093 346.71 54.10 4.10% 30 90.9 12.7 °.� TREE PROTECTION FENCING ®RIGHT OF WAY DIVERSION (RWD) �+ 4 0 A2 Al - 11.71 340 52 340 OC 20 24 2 5745 30 71.7 10.7 0.03 Not To Scale r� n a Not To Scale ` r B7 06 1.17 0.78 0.92 0 92 5.56 6 81 6.23 378.50 378 00 25 00 2 00% 15 9.9 8,5 0.05 a u 86 65 0.04 0.62 0.04 0.95 5.05 6.80 6.46 377.80 376.20 134.79 1 19% 15 7.6 70 0.32 B5 84 0.32 0.75 0 24 1.19 5 37 6 71 7.99 376 00 375 50 24 90 2 01% 18 16.2 9.1 0.05 84 B3 0.00 0.00 0.00 1.19 5.42 6.69 7.96 375 30 372.70 100 38 2 59% 18 18.4 10,0 0,17 B3 82 0.16 0.66 0.11 1 30 5.58 6.65 8.63 372 50 363 20 145 91 6 37% 18 28.7 142 0.17 82 BI 0.59 0.86 0.51 1.81 575 6.60 11.91 363.00 359.00 40.28 9.93% 18 35.9 18.2 001 810 01 0 40 0.71 0,28 0.28 5 00 6.81 1.94 361 50 359 00 19.50 12 63% 15 24.9 12.0 0.03 +lispLTH Qe, - 11 CA C3 0.16 0.56 0.09 0.09 5.00 6.81 0.61 350 11 319 53 59 18 0.98% 15 7.0 3,4 0.29 �4O' RC C3 C2 0.34 059 0,20 0.29 5.29 6 73 1.98 349,33 348.66 67.51 0 99% 15 7.0 4.2 0.27 O 2 C2 EX Cl 0 67 0.78 0.52 0 52 5.56 6 65 3.43 348 46 347.80 112 83 0 58% 15 5.3 3 4 0 55 c3 JUSTTN M.SHIMP Lic No.45183 'Ex.Stone Sewer Downstream D1 is adequate.See Rte 250 LO-347 ROe 250 Inlets " � IA•e..••.,�..., 44Y L0347 Hydraulic Grade Line t6 rTs. �>a010-8r�' ffi w ... OF n=0.013 , IPA- 1 I I TI I SSIONAL E 747 4' Junction Loss ` / , . ffiI f Duffel Wet 1�����) �_' 78 1 1 TT- TT_4l Water Surface Water �I 1 T T"T TTT71 T Inlet Number Elev.' Do 00 La Sro% H, Va Ha 0, V, O,V, Hi Angle He F4 1.3'H, 0.5H, Final H Elev Rim.Elm �i��� :�' °`.---... t�x1a [_wJ . (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) (15) (16) (try (18) (19) (20) (21) i � ,j =�-� PLAN m�� �� .1 6-180 313.70 2.00 42.68 79.00 3.560% 2.812 32.69 4.9781 39.88 18.30 729.9 1.820 15 0988 7.786 10.598 324.30 338.65 -. %q/ . � .,o.m `n 7-1P 332.00 2.00 39.88 95.00 3 109% 2 954 18.30 2 2361 38 23 14,59 557.8 1.157 40 i 421 4.814 7.768 339.77 343.58 \-� SECTION A-A [ 1 7-3P 339,77 2.00 38.23 55.00 2.857% 1.571 14.59 0.1983 26.44 10.28 271.8 0.574 5 0.098 0.871 2.442 342.21 345.50 ' ,�„�,��' , IETHOD OF TREATMENT N DROP NETS r� `o E E E° 7-18P 343.70 1.50 26.44 147.00 6.337% 9.315 1028 0.0985 21 21 12.25 259.8 0,816 5 0.140 1.054 0.5269 9.842 353.54 354 57 7t NB"am. I� 8-1 0 0 7.22P 353.54 1.50 2121 200.00 4,079% 8.158 12.25 0.1165 15.33 8.60 131.8 0,402 3 0.057 0.576 02879 8.446 361.99 364.37 �r SECTION 0-A�w o 8-4P 382.20 1.50 15.33 291.00 2.130% 6.199 8 60 0 0459 11.80 12.90 152.2 0.904 1 0.103 1.054 0.5269 6.726 368.93 371.70 1 CCC `X SECTION B-9 vvre e. Postdev8-20P 369,20 I 50 11.80 224.00 1182% 2.828 1140 0.0807 11.21 12.00 134.6 0.783 1 0.089 0.953 3-781 372.98 381,60 n..,""'.•. 3N&1DN,`sR.�` ;:� / 11 ,°""a..""w.e 3F{"Ab'Q',.5'•°� �O1,m.�.m•. r� c4 c>°^Y$ Postdev D1 378.60 1.25 6.60 263.00 1.044% 2.745 11,60 1.2537 6.60 7.75 51.1 0,326 69 0.560 2.140 1.0698 3.814 382.41 393.60 yw411111 .w w..w,.e«n.n ow M. U E`o Postdev 02 390.70 1.25 6.60 8.50 1.044% 0.089 7.75 0.0373 8,60 7.75 51-1 0.009 - 0037 0.084 0.1091 0.0546 0.143 390.84.,, .3p3.09 a fiftift fr/7/ Q)�/1J a tr�� g a .c `ai mar ems.- „• ,°'"",a:*'.a M„• �, ^`I "' • 'Outlet WSE is listed as the greater of either the calculated taihvaler or the insert at. � �..Q � •rm�e•,tea.M•�'�� ��;:.,.;� � V ' r�..an a.o.,.ra..ra .®.a.n,..�..-.i,u a aw.c.n n.�...ans rnrnrnm m Pantops Corner -.- ..._ It��.€Yw M'.,,o.,•.n...�.° yg.�:-...®�.,.,..�.,...,,...,.,....,.� 0 0 0 0 0 LD-204 atormwater Inlet Computations Inlets on Grade On Sagttlets n.IN SEC11aN 9-a \��r Only Day TYPICAL PRECAST UNIT r_ o R 1!T{100 OF TREATMENT N MANHOLES _J _ E g g y 'RaP... STANDARD METHOD OF SHAPING '�' s,r„m 'TYPICAL CONCRETE SAFETY SLAB FOR DROP INLETS, 000 0 $ E T s 9�t ,r ; 8 $ g ya .I..d,..a � v .m s la E6Y,I,,,,�.... MANHOLES AND JUNCTION BOXES i bs 8 z a a m 2 $ r MANHOLE 9 INLET INVERTS 00 4) O d ti E 0 0 0 a 0 a 0 1-m 0 . CI 0 a 0 0 3E 1 2 3 4 5 6 8 9 10 11 12 13 143' 15 18 1) 18 79 20 21 22 23 24 M) (ec) OnmO (d Pry s) (cis) (cis) fr) fPl (rt) (0) (eta) (cfa) On (8) M) D2 WO 10 1.88 0.9 1.15 4.0 4.82 0.00 4.02 0.013 0.030 0.020 0.08 027 0.5 0.54 7-57 7 5 8.65 0.00 8.65 0.41 0.5 0 82 1460 COUNTY OF ALBEMARLE A13 0438 8 0.08 0.76 0.06 4.0 0,24 0.00 0.24 0.013 0.061 0.020 0.08 1,20 0.14 100.0% 0.24 0.00 w ' Depanment of Community Development 7 5 0.45 0.00 0.45 1.52 0.15 95.9% 0.43 0.02 I MV Al2 0138 8 0.07 0,74 0.05 4.0 0.21 0.00 0.21 0,013 0.061 0.020 0-08 1.14 0.14 103.0% 0.21 000 Construction Record Drawings(As-built)for VSMP Lall'4111: il.' 7.5 0-39 0.02 0.40 0.08 145 0.15 100.0% 0.39 0.00 Al IC 01-38 4 0.14 0.83 0 12 4.0 0.48 0.00 0.46 0.073 0.061 0.020 0.08 0.09 0.5 0.18 3.10 'The following is a list of information required on construction record drawings for V 7.5 0.87 0.00 0.87 0.08 0.14 0 5 0 27 3.97 A178 DI-38 8 0,24 0.77 0,18 4,0 0.74 0.00 0.74 0 013 0.061 0,020 0.08 0.09 0 5 0.18 5.00 stonnwater facilities(reference Water Protection Ordinance 17-422), ft is preferable that the 7 5 1 38 0 00 1.38 0,08 0.14 0 5 0 28 6 32 construction record drawing be prepared by someone other than the designer. Please do not �}�/ All 01-38 14 0.34 0.81 0.27 4 0 1.10 0.00 1.10 0.013 0.061 0.020 0,08 2.29 0.17 100.0% 1.10 0.00 g'provide designdrawings as construction record drawings. 1 > 75 2 06 0.00 206 4 28 011 100 0% 2.06 0 CO A10 O4-38 10 0.08 0.78 0,04 4.0 0.18 0.00 0.18 0.013 0.067 0.020 0.08 1.02 0.14 100.0% 0.18 000 7.5 0.33 0,00 0.33 1 30 0.15 100.0% 0 33 0 00 A.A signal and dated professional seal of the preparing engine eo or surveyor. A9A 01-38 10 0.27 0.79 0.21 4.0 0.84 0.00 0.84 0.013 0.020 0.020 0,08 0 18 0.5 0,37 3.20 B.The name and address of the firm and individual preparing the drawings on the title sheet, O 7.5 1.51 0.00 1.57 0.23 0.5 0 45 5 22 C.ThO constructed location of all items associated with each facility,and the inspection records to vilify HA92 t1-3C 8 0.40 0.89 0.35 4.0 1.41 0.00 1.41 0.013 0.133 0.020 0.08 0.16 0,5 0.32 2,00 proper dimensions,materials and installation.The items include,but arc not binged to the following: C•) 7 7.5 2.64 0.00 2.64 0.24 0.5 0 48 4 76 1. Inspection Records and photographs for pipe trenches and bedding,inchding undeedrains. ` ABY DI-38 12 0.12 0.73 0.09 4.0 0.35 0.00 0.35 0.013 0.133 0,020 0.08 1.17 0.14 100.0% 0.35 0.00 2 Vhleo Pipe inspection for any pipes which are nut accessible of viewable, n 7 5 0.66 0.00 0.66 1 48 0.15 100 0% 0.66 0.00 A9 01-38 12 0.25 0,68 0.17 4.0 0.68 0.00 068 0.013 0.133 0.020 0,08 1.50 0.15 100,0% 0.68 0.00 3. Updated Location with geor,0o[dinales of all facilities.75 1.28 0.00 1.28 1 90 0.16 95.8% 1 22 0.05 4, Verified Drainage Area maps for the drainage area treated,and for drainagetothe facilities. A8 Dt38 10 0.09 0.53 0.05 4,0 0.19 0.00 0.19 0.013 0.133 0.020 0.08 0.93 0.14 100.0% 0.19 0-00 5. Current physical and topographic survey for all earthen structures. Ponds should include a survey t 7.5 0.36 0 05 0.41 1 24 0.15 100.0' 0 41 0 00 of the pond bottom.Surveys should verify pond volumes are per design.Corrections may be required �J A6 DI-38 14 0.31 0085 0.26 4.0 1.05 0.00 1.05 0.013 0.015 0.040 - 4.08 0.16 100.0% 1.05 0.00 for alterations from the design. I r I 7.5 1 97 0.00 1.97 5.17 0.21 100.0% 1.97 0.00 6. Plants,location and type- WI B1A 01.3E 10 0.40 0.71 0.28 4.0 1.14 0.00 1,14 0.013 0.040 0.020 0.08 0.19 0.5 0.38 1.55 7. Plaits and profiles for all culverts,Pipes.Risers,Weirs and Drainage Structures-Display the 11. J 7.5 2.13 0.00 2.13 0.23 o s 0.47 3 50 installed type of drainage structures,culvert/pipe size,weirs,materials,inlets or end trealm0m(s), inlet and outlet pmtection.alignment and invert elevations compared to design. ? Eeerteel Q B7 01-38 10 0.17 0.61 0.10 4-0 0.40 0.00 0.40 0,013 0.073 0.020 0,08 1.36 0.15 1000% 0.40 000 8. Computations:fix significant deviations from design,poorr uk scaled computations vtrifying that JQ 7.5 0.76 0 00 0.76 1 76 0.16 100.0% 0.76 0.00 the as-built condition is equivalent or better than design. 88 a-38 10 0.04 0.82 0.04 4.0 0.14 0.00 0.14 0.013 0.073 0.020 0.08 0,93 0.14 100.0% 0.14 0.00 4. Ditch Lines-Display the anstnricd location of all ditch lines and channels.including typical d 7.5 0 27 0.00 0.27 1 18 0.14 100.0% 0.27 0 00 sections and linings. a Ca 85 01-3B 10 0.32 0.75 0.24 4.0 0.96 0.00 0.96 0.013 0.018 0,020 0.08 0.20 0.5 0.40 3.97 10.Easements-Show all platted easements with dead book references labeeled.Facilities and drainage W 7 5 1 BO 0 W 1.80 0.24 0.5 0.48 6 OE B3 Di-38 10 0.16 0.66 0.11 4.0 0.43 0.00 0.43 0.013 0.040 0.020 0.08 4.26 0.09 100.0% 0A3 0.00 mulls be within plalttx3 easements.Provide enststp- of ray the documents. s, J 7 5 °80 0.00 0.90 5 39 0.11 100.0% o eo a 00 1 i,Guardrail,fences or other safety provisions-Display the constructed location of all safety1: 182 D138 10 0.59 0.86 0.51 4.0 2.03 0.00 2.03 0.013 0.040 0.020 008 0.21 0.5 0.42 4.55 profs&xis;fences,guardrail,including the type,length and applied end treatments,compared to > Q • 7.5 3.80 0.00 3.80 0.25 0.5 0.51 6.72 11estgr- 12,Material layers-biofilter media,stone layers,sand layers,keyways and cores most be verified as to Dote material types and depths. Include inspection reports,boring or test pit reports and materials C4 D-38 10 0.16 0.56 0 09 4.0 0.36 0.00 0.36 0.013 0.040 0.020 0.08 1.47 0.15 100.0% 030 0.00 certifications.Btofdlter media must be au approved state mix- 1 1/30/20 1 8 7.5 0 67 0.00 0.67 1.85 0.16 100,0% 0 67 0.DO 13. Access roads-show location of access roads,surface treatment,drainage etc,as applicable. Score C3 01-38 10 0,34 0.59 0.20 4.0 0.62 0,20 1.02 0.013 0,040 0.020 0.08 270 0.17 100.0% 1.02 0.00 7 5 1 54 1 11 2.65 5 83 024 85.4% 2.26 0.39 IS.CompacManufacionturers reports an rtquilions W verify fill compaction in d'JR1s. 1”=20' Q Ex 0t38 8 0.67 0-78 0.52 4.0 206 O.W 206 0.013 0.020 0.020 0.08 5.� 0.25 90.1% 1.l8 0.20 15.Manufacturers certifications for proprietary BMP's certifying moiler installation and functioning. Sheet No. 7.5 3.87 0.00 3.87 8.11 0.30 71.3% 2.76 111 . - - - --_-- -- -- C12 OF 13 Postdev8-20P EX.01-38 10 0,43 0.74 0.32 4.0 1.28 0.00 1.28 0.013 0.030 0.020 008 3.88 0.20 100.0% 1.28 000 File No. 7.5 2.40 0.00 2.40 _ 5.99 0.24 100.0% 2,40 0.00 12.025 380 380 i o A ---... c, �-PRW GRADE 7 _.- Z V E E - 11=1L=11 11 i 1=11 mil 1 375 375 Imo-41 2 I =1' ILoIf:11-1I J'L I= IL-ll V W I I II I I II I r�1 i� ( 'I_I I Jill - . . : II 11=11'-II=11= _ :_ �,. �I Ih III I IL I-1t. f IL JI -11 - �IIa1L�ll ll I?II -1--" - GRADE I 1=11: II. II 11#JI .11.01 11. .11=11.#11 .II .Il=_ -*1-' I PAVEMENT i F -.11=ilti;:11 II-ll.-II=. - I ACCESSRSER i ACCESSRSEPtig ►� A 4ENi R.MADDER CO PACCED SOL W LADDER E� ACCESS RISER BACKFILL CBR=100 11,t I I w LADDER COMPACTED SOIL 594E:DETENTION PIPES 370 S< \ Cd 51 370 CT y. 6 r BACKFkL CBR.10.0 I PERFORATED STEEL A D EX TRADE �N VAMSG;Awn ^� q N [EX GRADEUS 160 NW I JOINTS AND RISERS US 160 NW (SEE DETAIL) >FILTER FABRIC SHALL BE WATERTIGHT. FILTER FABRIC EX., / (TOP) (TOP) Lza EL GRADE I 365 r 365o • TOP STOYFw763 00- _ TQP _ _ saws i�'IS ]T1 OIC _-----_ •�-- , :LISE Mom:. 1'Oil STONE .zI• I- 5?SW�!::SrI 1(il Ss 7±o-Yk WY 36 �i •': ...,.. .. , .•.. . .. '",_..:-'a' - - ..• r"i Go toy 70P PPE FILTER FAB1C _ 36100 vvRR 3�,t i_�• ��•:i I ••0�i •�: M v,1 iY i , 1 IT ! °4,; w OVER)) W o PER PLAN 98"PERFORATED UP PER PLAN 96"PERFORATED CUP PER PLAN 96•PERFORATED[MP PEP PLU V V ,1�yp1 OKPLAP .� 1 r 72.0 I }60 C�2'WN i- OE 32 DP TEE CUP TEEK 2'YI N 360 .'....,p- / ",.,.. '> DIP TEE CMP LEE 1- W5E U ••1 ( 30' 4.0' ao 40' 4.0' > g0 1 72 LF CORRUGATED PERFORATED. . I `''SETAA ( 2 W • TADOER MELDED SPACING (Tr) SPACING (Tr') SPACING (Tr) SPACING O CAAP LADDER WELDED - -I ( I ALUMINIZED CMP (TYP.) � .r PER WUFT.SR - H US 160 NW _ _ _ LADDER WELDED US 160 Nw (-'R-}--C1 W 0 FILTER FABRIC t�Ij1� \ �•• •'1 o CMP • Z1-• r0 cMv FILTER FABRIC ) PROVIDE MIN. 23,625 CF TOTAL Y - 1 - a s (SIDES) -i1ji i\ - •1• •1Y• / / (SIDES) 7 P • �� w1•1 355 1 PIPE ST RAIL ft '$Y? 355 V,' "z NV Ea-3 ♦�• LE-354 - ' W INV FIE_}5100 \ / \ ray. .�.-.,Ir-1�.•+t+•.� .�- _�T sTDNE Rlv s4 1>a_ 15i ioNE- -! '�S _ _ ONE "" 111 •1'STQE �!-1�r•+.-- gT�T �. .. ._. . . ' . ._.. 0.�l.�'�i,. .. ..,..., t 1-11 1-1-I1. .11 .Il. 11. JI-11:-1L'II-JL=.11= - ` =: -1 = =11=1L=11=7111-IL-II 11.11.1111Jf-11:=]" W D 2'YN OVERLAP NOTE FILTER FABRIC SHOULD NOT BE NOTE. FILTER FABRIC SHWLD •• , •--1 _ - -, A•.L� OY TONE -. - PLACED CN TRENCH BOTTOM SOL SUBGRADE PER RACED ON TRENCH BOTTOM 2'MN.OOERLAP 350363 .--- .--_-_ __ __-. 135 10+00 10+50 11.00 „opLTH op, ®UNDERGROUND DETENTION SECTION ©UNDERGROUND DETENTION TYP. PROFILE (BARREL 4 SHOWN) R. /4,c SCALE-I"=5' SCALE:VERT,1•=5'HORIZ:1"=10' I =•• MR-1 FRAME Q COVER FOR Rif S RISERS IN ASPHALT PARKML 4•...KM r,m no U]USTIN M.5163 > LOT,PROVIDE 5'gAYEIIR CONCRETE New Trash Rack I'�{L.�..".✓�'p Lk.No.43183 SUPPORT SLAB 4"NV,3000 PS. • 1" Holes A �� 4"MIN. PROVIDE MN/"GAP FROM TOP OF CONC ALT r N�O•w, • /30R Opening Area I �Yo, PO•e T�F�2F' �a GRAVELNTTO RISER Rim COVERVPRONDEL 6w VDO 021A • e•Zwe" 0000 • 'f.o ,� '• S•rA7NAL " �_� GRAVEL BASE UNDER CONC RING g=;,+,'e�'4 1 U°O°O O ">�A�1 3 •I/AO., 30"CAP MELD LADDER TO ACCESS j' U 0 O 0 00 0 0 NOW ACCESS RISER 4" =fi RSER.CONTINUE LADDER D O O O WYWI TO 8'CMP DETENTION • .,n•.I,. Do-°O°O° R ;LE 36��L�•:�'•� ; UPTURNED B' '� O O -� �SL78'LS".�@°."4:iP$� MELD LADDER OMiO � CAP ELE 366.00 A CMP W.CAP _,. WVERT S .,,,... ?°O°O°O •: A i YlTi'L.�...''��'�• BON SIDES --- 100-YR ELE-364.SA_ !PW f ]OD' ,,..4.,„, .10'CMP RISER 1'in J O O O _ -."^"'� jW�E 4.Oo ! • : 1D000000 44 y, i06LTYl.�t�� TOP ELE.36300 10-YR ELE-362.85__ j 1,1 PROYANUFACTUREO rr-- :V)�-tl 6- B'OP DETENTION �' �• ,r, O�O�O�O mow•. _I 7 /G h-vS• �,��.�•114,,�W, RSER STUB = .S �I,6W,'»i- ...•.� 137i1®iiifii7lii� AI -"It % i0P ELF-]62.00 / • f-12"-� �p� l 12 WEIR / / /////� T-..LT jW 1 /� / .!. / �.� � +.��, Typ. Front Section 9 16 GAGE ALUMINIZED STEEL \\\\ / /y�//�//, -•�6 ELBOW Awi I 1 •-+- �I1Q WILE TRASH SCREEN WELD ` /% --- 2-YR ELF-359N W �f 4- // i�/� __ aoo' I I win.- =$'_ 10 NSDE 6 CRP PIPES &00' ,�� /,'� /C -)SB 20 �(4iN- • , 9'WEIR PLATE Wr- 1 c c c G CAP 1 I I ]•.B'ONFl[E %j ��/////./ I I n ° 1° Rlfi'6S@ y o 0 0 0,X sI 1 1 ,_1' '% %/ i„, .``S � ,,�� , , ._^ 0° °° wrrNs - [1~ gout, Ti (A)BOTTOM .?�//�i,, A� so haw . B.� 1 i I °' °p° m t°p '-I �T-,wo STEP_q '•I 8="'�,'o it (RASH RACN // \ Ar .��� MV _4, ,/ ELBOW .V FLE.SSI.00 A. 7 t e ORIFICE ep•AK �•: ; ; :'•r'; 4 ,• f :� ' � ---�ntri o°o°o ° (81 MIN. LADDER STEP DIMENSION E. NOTE. WEIR PLATE SHALL BE 14 31Y ADS NP-STORM 1�0�0�0 y 61..Hnn GAGE PREMANUFACTURED REINF �12"-� F 6" C13 TUTS ALUMINIZED STEEL REINFORCED k, - WELDED TO CORP DETENTION PIPE W N, (A) Bottom Rock (B) Top Rack 1.v�'11`��:I "v'% 91n°w ^.„'';:, Side Section Side Section 34' a,mmw 0,®SCALE I"=5,TRASH SCREEN DETAIL .DETENTION WEIR PLATE DETAIL DETENTION BARREL 1 DETAIL ACCESS RISER DETAIL -- - � __�,� SCALE:1"=5' SCALE:1"=5' . SCALE:1'=5' ORIFICE TRASH RACK DETAIL 0 of o000 el SCALE:1"=5' ftjffl ETY UNDERGROUND DETENTiON_COBSTRUCOON NOTES: ,I,I I / / / / / / / / / / // - -=.__----_4 ��/ - ! I- L __J._ - 'V "I '� IMPORTANT THESE NOTES ARE GENERAL INSTRUCTIONS F02 DESIGN AND CONSTRUCTION OF THIS DETENTION SYSTEM.MANUFACTURER'S GUIDELINES SHALL SUPERCEDE / / / / / / / / / _ THESE NOTES.IF DISCREPANCIES OCCUR BETWEEN THESE NOTES AND MANUFACTURER'S GUIDELINES.CONTACT DESIGN ENGINEER IMMEDIATELY CONTRACTOR IS , / / % / / / / / �• / / / �� / / 1 I RESPONSIBLE FOR FOLLOWING ALL MANUFACTURERS GUIDELINES. / / / / / .* / / / / / / / / -�� / ,j/./ -I} - -t-- 'Standard Hardware / / / �• / / / / / / �,�� - /-%--- -r_ /1 / I (TYP) CMP DETENTION NOTES // / / / / 1 �y� /•/_ �/- / ' / -.... • ELEVATION VIEW 1.MINIMUM TRENCH WIDTH MUST ALLOW ROOM FOR PROPER COMPACTION OF HAUNCH MATERIALS UNDER THE PIPE. THE TRENCH WIDTH IS THE I //. //// / // / / / // / / ���VVV777 / iiiii • MINIMUM AMOUNT REQUIRED FOR PROPER INSTALLATION AND TO SUPPORT HORIZONTAL PRESSURE FROM THE PIPE.THE MANUFACTURER'S .. RI¢ 100=YR/ / / �J • // % . ) / / / / Q SUGGESTED MINIMUM VALUE IS 1.50+ 12•. / OO9PL / / / / / / • ( Sr► eerie Gasket 2.MINIMUM EMBANKMENT WIDTH(IN FEET)FOR INITIAL FILL ENVELOPE: 30D BUT NO LESS THAN D+4'0'. / Fa�f// 34 // / • �•/ - �r� / / _/_ / I / I / •,I G2,*'WI�J 24 Z 3.FOUNDATION SHALL BE WELL CONSOLIDATED&STABLE,CAPABLE OF SUPPORTING FILL MATERIAL LOAD. -' 1 _ r / 4 OPEN-GRADED GRANULAR BEDDING MATERIAL SHALL BE A RELATIVELY LOOSE MATERIAL THAT IS ROUGHLY SHAPED TO FIT THE BOTTOM OF THE -,�11/..:�f /j / / / s / / / / I �' PIPE,4"TO 6"IN DEPTH.SUGGESTED PARTICLE SIZE OF 1/2 CORRUGATION DEPTH. �;��• ^. / //// // U. ;..'/ I. �� / / / rrt 5.PIPE MATERIAL: 14 GAGE ALUMINIZED PERFORATED CORRUGATED STEEL PIPE.3'x1"CORRUGATIONS OR EQIV 4A.410- RIt// J 6 HAUNCH ZONE MATERIAL SHALL BE HAND SHOVELED OR SHOVEL SLICED INTO PLACE TO ALLOW FOR PROPER COMPACTION A*�2.� ��//// �/ NE S4// •, / / // END I STA.PO+BOE NEVI SYAA ESMT..I I /7 THE SHALBABE FILL PLACED NIAL 125MAXIMHALL UM LIFE A TS AND SINING.ANGULAR.MALL BE WORKEDWINTOE DIME TONE PER AASHTOPIPE HAUNCHES BYA 43.MEANSSE OF057 SHOVELN$EUGNG,ROODINCOR BACKFILL MAIERIAL ��=',. L /� / / / ,. "ACCE55 30" ICE55 ( I I \AIR-TAMPER,VIBRATORY PLATE OR OTHER EFFECTIVE METHODS.COMPACTION IS CONSIDERED ADEQUATE OMEN A DENSITY EQUIVALENT TO 901t 1�, qp (//` - I I \ 'STANDARD PROCTOR IS ACHIEVED OR WHEN NO FURTHER YIELDING OF THE MATERIAL IS OBSERVED UNDER THE COMPACTOR OR UNDER FOOT. X=•� rV '�C / _ 1IlIITHE PROJECT ENGINEER OR HIS REPRESENTATIVE MUST BE SATISFIED PATH THE LEVEL OF COMPACTION.INADEQUATE COMPACTION CAN LEAD TO it\or 1� / / L ,. -'�- '• t I \ \ OEXCESSIVE PIPE DEFLECTIONS AND SETTLEMENT OF THE SOLS OVER THE SYSTEM.BACKFILL SHALL BE PLACED SUCH THAT THERE IS NO MORE 8i:• '�, ` )I: ! ' 4m W ; \ I I I\ i I \ THAN A TWO-LIFT DIFFERENTIAL BETWEEN THE SIDES OF ANY PIPE IN THE SYSTEM AT ALL TIMES DURING THE BACKFILL PROCESS BACKFILL --- II. (Sim i� _ S , •�7 _• \ \ I MSHALL BE ADVANCED ALONG THE LENGTH OF THE SYSTEM AT THE SAME RATE TO AVOID DIFFERENTIAL LOADING ON ANY PIPES IN THE SYSTEM r� . I III _ \ \ M ® rd. \8.INITIAL OPEN GRADED GRANULAR BACKFILL ABOVE PIPE MAY INCLUDE ROAD BASE MATERIAL AND RIGID PAVEMENT IF APPLICABLE (/87¢�) .�{�� \ V9.TOTAL HEIGHT OF COMPACTED COVER FOR CONVENTIONAL HIGHWAY LOADS IS MEASURED FROA TOP OF PIPE TO BOTTOM OF FLEXIBLE PAVEMENT // `% A If 1=/ �,i I \ ` I \ Z OR TOP OF RIGID PAVEMENT. \-1 / •I. / I•: • %I I \ \ I 24'VOMe Bend Standard HerdwarB II/FINAL BACKFILL MATERIAL SELECTION ABOVE THE SPECIFIED STONE LAYER IS COMPACTED SOIL BACKFILL,MIN CBR=10,PER PARKING LOT / / • t• qy 'a6 r, \ I (TYP) PAVEMENT DESIGN SECTION IN THE PANTOPS CORNER SITE PLAN. '1W / W• lll . I �, .•....f ,•\ \ \l \ I - Z11.GEOTEXTLE SHALL BE USED AROUND TOP AND SIDES OF STONE BEDDING TO PREVENT SOIL MIGRATION. ,1 •� la W:, ,�.� RRR'"11P�'iPIF1�i.I J) n \ ` I SECTION VIEW Q 12.FOR MULTIPLE BARREL INSTALLATIONS THE RECOMMENDED STANDARD SPACING BETWEEN PARALLEL PIPE RUNS SHALL BE PIPE DIA./2.FOR PIPE 11 I - - t: - \ I \ \ I \IDIAMETERS 72•AND LARGER,NO LESS THAN 36•SPACING.PROJECT SPECIFIC SPACING IS DIA/2=18" t \ I / .�f -- A �l._i .. u '- \ \ \\ \\ ` 10 CMP HUGGER BAND DETAIL 0 13.CONTR ACTOR SHALL ENSURE DETENTION PIPES ARE SOILTIGHT AT JOINTS BY UTILIZING GASKET AND HUGGER BANDS.(SEE CAP BAND NOTES) \ I - • `I CMP RISER NOTES II,• \�` \ \!, ,• (/ '� RISER�US \\ \ \III\` \ 'f \\ C1 3 SCALE:1"=5' O • 1 DELIVERED BAND STYLE AND FASTENER TYPE MAY VARY BY FABRICATION PLANT. \ \ xv.11,.., " \ \ \ \ \ �I\ \ /L�2.JOINT IS TO BE ASSEMBLED PER AA$HTO BRIDGE CONSTRUCTION SPECIFICATION SEC 26.424. l \ \ \ F 11 -T.-'�;.i \ \ t f1 \ , Z J 3.BAND MATERIAL AND GAGE TO BE SAME AS RISER MATERIAL \ \ \ \ f 0. \ f u4-�-•m' 4.IF RISER HAS A HEIGHT OF COVER OF 10'OR MORE,USE A SUP JOINT. , \ W_ \ 5.BANDS ARE NORMALLY FURNISHED AS FOLLOWS , \\ \\ \ \ \ \ : ,' •.' =;7RASH \ \ \ \ I \ \ I \ •�.�r��•+.- Jr1 IINII 0.12"TMRU 18 1-PIECE i \ \ \ \ I •.�i7 SCREEN \ \ \ \ \ I IW LL 6 54•+ 2-PIECES \\ \ \ \ � �.�� •�', i.,��,-i; 1 \ ^ \ \ 6.ALL RISER JOINT COMPONENTS WILL BE FIELD ASSEMBLED \ \\ \ \ \11,1CA. . 11 I iI ` \\ I I 11 L- - • ITi^�iiry LL //1 7.MANHOLE RISERS IN APPLICATIONS MERE TRAFFIC LOADS ARE IMPOSED REQUIRE SPECIAL DESIGN CONSIDERATIONS.REFER TO RISER DETAIL ,\, ♦•\`\ \ \ \ \ ` • __ _ I I II \ I \ 1 1 1 -'�_ LLJ 8.DIMENSIONS SUBJECT TO MANUFACTURING TOLERANCES. , V 1 �• \ \ \ -,: �_:'30'ACCESS I I II S J • R SER 9 PREMANUFACTURED STUB-OUTS FROM THE DETENTION PIPES SHALL BE FRONDED FOR RISER CONNECTIONS.ALL OTHER RISER JOINTS SHALL BE \ \ \\ \ \ PROFIL FAa��' (C I t 1 I I le-- V/ ` • \ \ \ \ STA.10+•• MVE.. \ I� ( I I ) CMP MUGGER BAND&SLIP JOINT NOTES. \ ` \ \ \ \\ \ \ \ , /I I I I I I I I \,..• TOP VIEW '�•'�"" \ \ \ \ \ - I Date \ I HUGGER BANDS OR EQUIVALENT SHALL BE USED TO ATTACH SECTIONS OF CMP PIPE.SLIP JOINTS SHALL BE USED TO ATTACH RISER SECTIONS \ \ \ \ \ \ `LS \ L / I I \ ••' F-FiI'1R� 11 3O LCJ1S WITH A TOTAL HEIGHT W 1D'.BAND MATERIALS SHALL BE 14 GAGE ALUMINIZED STEEL OR EQUIVALENT PER MANUFACTURERS RECOMMENDATION. \\\ \ \\\\ \ \ \ r ��++ / / 1 BANDS SHALL BE SHAPED TO HATCH THE PIPE 2.BANDS ARE NORMALLY FURNISHED AS FOLLOWS: \ \ \ \\ \ \ \\\ \ - \; __i/\\// /' I I I / \ GOMDCTION � SCOIe a.12 TIIRD 48': 1-PIECE \\ ` \ \\ \ \\\ \ \ \ I ' / / / 2 BOLT.BRR&STRAP Sheet No. 1 J•_ZO • 6.54"+. 2-PIECES i V \ \ \ \,\ \ a --- / / / I/ 3I / •• 3.BAND FASTENERS SHALL BE ATTACHED WITH SPOT WELDS,RIVETS OR HAND WELDS. 0 UNDERGROUND DETENTION PLAN 11 CMP SLIP JOINT DETAIL c 13 OF 13 4.ALL CMP IS REROLLED TO HAVE ANNULAR END CORRUGATIONS OF 2-2/3'x1/2"PER MANUFACTURE RECOMMENDATION. File NO. 5.DIMENSIONS ARE SUBJECT TO MANUFACTURING TOLERANCES. ®SCALE:1"=20' C13 KALE:I•_5 12.025 6.0-RING GASKETS SHALL BE USED FOR RISER CONNECTIONS FLAT CASKETS SHALL BE USED FOR CAP DETENTION PIPE CONNECTIONS Section 5. Stormwater Management Plan Issued— 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County . • ` PROJECT MANAGEMENT • µ CIVIL ENGINEERING LAND PLANNING:- ENGINEERING June 2019 Mr.John Anderson : Department of Community-Development 401 McIntire Road . Charlottesville;VA 22902 . • Regarding: WPO 201800088 Pantops Corner VSMP Major Amendment Dear John, Enclosed is-the stormwater calculation packet for Pantops Corner. The development property has an area of 6.67 acres and will improve an offsite right-of-way area of an additional 0.15 acres,bringing the applicable site area (also called the development area) to 6.82 acres.The proposed stormwater design : meets the runoff requirements set forth in:9VAC25-870-96;:9VAC25-870-97, and 9VAC25-870-98, the VSMP Type IIC Stormwater Management regulations. This site is designed under the Type IIC regulations because • it has an active permit that was approved under these regulations which is now being amended. The current county approval is WPO 201400028 and the current land disturbance permit is#VAR10E170. SWM Quantity . . 9VAC25-870,97 and 9VAC25-870-98 require that the 2-yr:and 10-yr peak post-development site runoff at each channel not exceed the 2-yr and 10-yr peak pre-development runoff. We analyzed the areas within the development area for runoff compliance. To achieve post-.development peak flow rates that do not exceed:pre-development flow rates, the majority of:the site runoff will be:piped to an underground detention system consisting of 472 linear feet of 96" : • perforated CMP pipes embedded in:#57 stone. This strategy allows siterunoff:at the two identified:points of analysis:(POA 1 & POA 2), to comply with 9VAC25-870-97 and 9VAC25-870-98. There is a 0.38 acre onsite area which does not drain to a point of analysis per 9VAC25-870-97 and 9VAC25-870-98. This area drains to inlets along Route 250.and outlets directly:into.the RivannaRiver.. We analyzed this area Per 9VAC25-840-40, sections 19-b(1) & 19-b(2)(c), which states"The applicant shall - demonstrate that the total drainage area to the:point of analysis within:the channeliis 100:times greater than the contributing drainage area of the project in question...Pipes and storm sewer systems shall be analyzed by the use of a 10-year storm:to verify that stormwater will be contained within the pipe or system."This requires storm sewer:capacity:analysis to the point where the added drainage from the siteis 1/100 of the total drainage area. The total drainage area at the point of discharge into the Rivanna River is thousands ofacres:and qualifies as the limits of analysis due as it is over 100x larger than the added 0.38 acre drainage area. To demonstrate storm sewer capacity to this point, we demonstrated that the Rte. 250 storm sewer can contain the 10-year storm utilizing the VDOT.LD-347 hydraulic grade line analysis. This shows that the 10-year storm is contained within the Rte:250 storm sewer, so the:0.38 acres complies with 9VAC25-840740-19 for channel flooding and protection. 1 SWM:Quality To achieve nutrient treatment:compliance per9VAC25-870-96, we:analyzed the land cover changes for the development area and input the post-development land cover into the DCR Appendix 5D worksheets. The worksheets show that an amount of 8.49 lbs. of.phosphorous removal is required for this development. An amount of 8.49lbs. of phosphorous credits will be purchased from a VADEQ-approved Nutrient Bank to satisfy this requirement. Site Runoff Quantity Totals • Storm Events and Associated Peak Runoff Rates Pre-Dev Post=Dev Pre-Dev :: Post-Deli POA 1 POA 1 POA 2 POA 2 2-Year 4.09 cfs . :: 4.03 cfs 1.20 1:,01 cfs 10-Year 12.32 cfs 12.:18 cfs 3.44. : : 2.37 cfs :'If you have any questions please do not hesitate:to contact me at: Justin anshimp-engineering.com or by phone at 434-299-9843... . 2 PA \ TOPS CO \ E PRE-DEV POA DRAINAGE MAP • /{1'/i/ Ji1i//i , —Jrl� /// / l/%/ / / l I ! I , \ \ t r I l i \\\ II I I I II r! I t 1 / / /, i /, i ' i I ) , @!4iii • 11 I 11 v _L ;, /////,//,// i i / -'/, --- , , -/ , / / , / s i:a:O:w?1:a ':-IS'?a ��.,:\......., iii_ � 1 J III 11 iEi'iE;i ipEs'S i7:r.:::..... I v "'::•. ;••.:..ir •;•;�'::•r•..:•.: ..•.>::�.:.:.;:�.:ES:i:: •..:•'.:ii:iti:•:i . ><.[iiiiiiii ii:..:.. — _ I •X::...:: . .. ..:..r:::>:... i[fil :;>. sfts ¢:::�:;::::s:;r 1.� iiyrii :;;:.:. 1 >.r. Eiir:� �} ia:. 1 _ _ \ itii / 1 \ 1 VA .�`��t?:.it1Yp` fEE'Ei.E:ii jlill!`.'' / / / / -� - ! _ 1\ ?:i,..:.. /•..:ti: iiit/..y v A A _ <�^ I V 'i�� A ---___�� vvv v III 1 ,tTf t.. t..;; ::ii:r:i::t. , r / l t vv�. —%i! . vv v V 1 I I :..:pia t t \ \ \ \ 1 \ \ I I !✓' tld i l� A \ \ Ci VAS V A 1III A / '- 1., \ I I I 111 1 { '( \ \ \ 1 -, \ �\ \� 'Ili LAND COVER DATA \`\` f 8:[:"" � °` • \ \' 3eQ \\ `\ I I\ > // /f.'.' 1 I 1 i•1.1 I \\\ '^.€ggiii `k"••'•:';t.;?.;., /i / ��" �`\\\\N. \\ • \ \ i TO POA 1: �\ ~~ ill I I l ! 1 III 11 \\\\\\\.i:iii" ti:',1 / i'�sp\\\\ \ ` 1 5.25 AC TOTAL 1 \\+ J I I I 1 I I I 1 WOODS HSG B: 0.72 AC \\ \\` �:. .<. . / \ \ e25 AC IMP \ 1 \ : 1 / \\\ : €::�€>::::: \ f\, \ / POA 1tT•� ° iiil / I //�i'�� TURF HSG B: 4.28 AC 1 r ;::.>"" i :u. 1,1 IMPERVIOUS: 0.25 AC `��`:�.\ ::::il11.:. i T. 78-58G1 / _!I\ \ \\ „, \\\ :., ::; 3 p4 i \\ r - `__ !;%f ; ,t i 11i1i Hi I TOTAL: 5.25 AC \ \ 1 ..�...: \ \ / -- / t "/ \ 1 \ I I I\ `\`- i 1 `.!/'r', WOODS HSG B: 0.39 AC - �, TURF HSG B: 0.66 AC \\\� Z�p\\•\`, >'l' _ \ \. \ \\ \, \ \ 1IMPERVIOUS: 0.10 AC \ \\\' `"t;:.' _ ___ y/ \ TORTE250 ( - TOTAL 1.15 AC \\\\ \\\\\ ::.:... \` _____- > > -,' -,`�—— 0.46 7�C TOT /y �\ \� \\`�•\`\ \\ \ `\ ` �\ ..^' `' f _ i I Note: 0.46 Acre Predev Area to Rte \\\\\ O. "' 1::::::::: :::::: I, 250 is included in Rte 250 Drainage \,\\\ \\\ \ :i:iy:iiiii<:. :::>:.:•.: k:::atii:€:i::€::s::iiiiii :... :...:....:.:..., �' 3s0. Calculations and not analyzed with a \ \ � ...:?�:.:�::::�.<;,�:?..:::E>:::.>4.:::::::::::��:::::�::;::.:.:.:.:.:,:>:.:�::-.:<;�::.::;:::::::::::::w. � POA. Refer to note on Postdev POA \\\ \\\ — ..:ems''::::::::>:.: • >;;•• .••:: 8-5B Drainage \ ,\ � i i>:�, i; ::»,••:�� :<: ,+:i;ia;;;:::::1at:::,«,::•.••-::.,:: : � T.M. 7 __ __ � \ a e Map. \\\ \\ 1iiiiil:�.`€ice:;.,•.:.::.,.:.,;.,;, .+:...,, ::!r..; +:H;w,r,..w;i,:::.:s::.• _ 1 re r :: \ \`` I .15 . TO�T�A�1 . _ - ~" HYDROLOGIC DATA 1 .— y��` _ __ - - iiiat'i - 0.10 AC IMP`-, — ---a7o- 4 I yyV - T.M. 78-5F I c _ TO POA 1: ::::.::::.:... ? "` \ A - I � ,I, I cn \ ToC= 13.2 min \ :'i 1 111 `;`. ..° € 1 1I - Q2-YR= 4.09 cfs i : •\,f.M. 78-5E \\ 1 , = o Quo—YR= 12.32 cfs i 1 \ o Qioo—YR= 31.73 cfs ' o i;i ,_f ` T.M. 78-5i o `s _ _ TO POA 2: . r \ li O - - v C71 — :I II � o ToC= 6.9 min ) : , 'k _ --� I 11 N �!\ \\ — Q2—YR= 1.20 cfs 0 1 \ \ Qi0-YR= 3.44 cfs ' L \� 1 1 t` 100—YR— 8.64 cfs 347.8 0tl 1 `�� , I I I 1i \ POA 2�' \ I I 1, * ...., \ ` \ \ \ ' \ ' T.M. 78�5G 80 0 80 160 240 \ sr ` 62 \ t - ■ ■ ■ ■ ■ `:: S"114 356. . `t , \ \ SC•• 1" SO: \ \\\\\I \ TON -0007` v S. �'\1 `\\\ \ '� M1 ' / // 2 \\ \ 1 PREDEV Type 1124-hr 2-YR Rainfall=3.66" Prepared by Shimp Engineering, P.C. Printed 5/31/2019 HydroCAD®9.10 s/n 07054 ©2011 HydroCAD Software Solutions LLC Page 2 Time span=5.00-48.00 hrs, dt=0.05 hrs, 861 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Predev DA To POA 1 Runoff Area=5.250 ac 4.76% Impervious Runoff Depth=0.69" Tc=13.2 min CN=62 Runoff=4.09 cfs 0.303 of Subcatchment 2S: Predev DA to POA 2 Runoff Area=1.150 ac 8.70% Impervious Runoff Depth=0.69" Tc=6.9 min CN=62 Runoff=1.20 cfs 0.066 of Total Runoff Area = 6.400 ac Runoff Volume =0.369 of Average Runoff Depth = 0.69" 94.53%Pervious = 6.050 ac 5.47% Impervious =0.350 ac 7 PREDEV Type 1124-hr 10-YR Rainfall=5.54" Prepared by Shimp Engineering, P.C. Printed 5/31/2019 HydroCADOO 9.10 s/n 07054 ©2011 HydroCAD Software Solutions LLC Page 5 Time span=5.00-48.00 hrs, dt=0.05 hrs, 861 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1 S: Predev DA To POA 1 Runoff Area=5.250 ac 4.76% Impervious Runoff Depth=1.78" Tc=13.2 min CN=62 Runoff=12.32 cfs 0.780 af Subcatchment 2S: Predev DA to POA 2 Runoff Area=1.150 ac 8.70% Impervious Runoff Depth=1.78" Tc=6.9 min CN=62 Runoff=3.44 cfs 0.171 af Total Runoff Area = 6.400 ac Runoff Volume = 0.951 of Average Runoff Depth = 1.78" 94.53% Pervious = 6.050 ac 5.47% Impervious = 0.350 ac �o PANTOPS CORNER Time of Concentration Calculations PREDEV TOC: POA 1 55 ft overland flow 29.1% slope 0.35 C-value 5.5 min Seelye Chart 405 ft s. c.flow-woods 3.5% slope 1.3 fps velocity 5.2 min. NEH Figure 15-4 590 ft Channel 64 ft height 2.5 min. Kirpich Chart TOC= 13.2 min. PREDEV TOC: POA 2 50 ft overland flow 24.0% slope 0.35 C-value 5.5 min Seelye Chart 297 ft s. c. flow-woods 6.1% slope 4.7 fps velocity 1.1 min. NEH Figure 15-4 195 ft Channel - Pipe 9 ft height 0.3 min. Kirpich Chart TOC= 6.9 min. 16 ��;,'', i , , ; I 0PS C0� \ TES / / / ' ' i' /i / I 1 I I I 1 1 / / i \\\ \ 4 / '�4 i i /;!�' /, o / ,' ,' ,, // // 1 i 1 �, i `\ • -- - ■■■:: -: � -- +tee,,;- � �"'`>_ ♦,�= "_r INLET DRAINAGE MAP f r �� / .' i '+ter ■♦._ �: - __- -- / - -�,� C IMP ' - G11. ' /110, �_ L 1/'L.- Po: J -r /.., rr�i ``, ).1 U-� - ;♦♦ .♦♦ 1....., . ax_r_. y�' - -- _ _. -�-. ` , y. - �. ll - � L r !` / �<,�'6 / '�A J°-- rr _ "/��j/ TO INLET �,# / r ^"!s .- ors 410 er 9♦ �_/ \ \' � r/. / / / -- i - I{��/'f/�/�- 0.22 ACRES - I ., "Air A A/� 1 13,,, / r ���.LJr ! :' /i - •I '- v\ /// fl,!'--- 0.12 AC IMP "lr% 7 A �J�J/.�� ' '.� / _ :3.7. ��ll.���5��.f� 1oarl f � /84 ; ri � a ✓ ATO\.• I 1.1• R S ,�; �� oie, ° per/ / f �ill ,.•�I� W 'L'- v///�/�, i, �' A�tEATO 62 0.32 -"!' •r- 11 Hip i . • �roil� � �1 ■i I ,I�I1 - ■ //' 5 f 1 , q'S9 ACRES 0.24 AC 1,10,...... , _. .�/� ■1 11 U U ■ -- --- /__- / - _ �� / .-,r, � +� 1 iI 11 ircr r 11 �� /b.55ACIMP /���� --- ' �` ♦■♦ i �� �i I k 1� Q Q Q "� _ / 7-'II---Ij j-,r-rr-: /% , f O �� t ■ ♦. i � A.isc� tina�{i �n I I'�I� Bi� IIII /� I I 1e I 1I / i AR4O r. r O� I I I Q O�� �� I - 4 J 1 1.16 ACRES e� � ` II t�! / 1 \ I y� 1 �� \ r--- i- 1 % Y l J 2� ■ B1 / ` - I I� I I 4 I I Y' I �� / 1 I /'`, i 1 1 ! 1■ -' 9 93 AC IMP I ! �\.`.�s .- .�c • Ili f�, 1 11 1 �/^ - ■ v q /'///// il', / - i li it /: i ® \�.. I 1� er"iJ `�I /1 1 �..� -.. 1 ♦ 4�� II.T�3•. XJ•: • I • 11�•I � c-"''i� 1 � 3� ��. �t„lam f1 .. ��� � r... ■ �--" � �� _ ' ,--;� it "1 �" I l it III i f i 'i 1 1I I ' ' 1 �!, ,,� i I I 1 -r-- " . / EA TO A�10� -- .i°.Fi°�rx-• . �+�!t.♦ /n----J i ��. I t 1 1 ! ` ,1 I r_.._.��... ��N1177��i 06. '� _ ,t I I 1 J rl � /v i' �! -.. i -. I AREA TO A13 %/f / r y \ \ -1 1 I 1 i J I k 'Y .__ .`/�( //� VIC�y"!' I i / !X `�� -"� �J ,/41 ` \ -- ..___1! > % \ --- 1 / • 1 II fi rv. 's ' r0.57 ACRES \\ \ -- -, I" AREA TO B1A ., II I r--- / \ I '; . 59 AC IMP (/// �� v v v v ,'v P5 s 0.4 CRES v� iL / 1r N ..+ * _ �I r \\\vv v vv I .3 1�C IMP j/. � • - -�/ //�" _ �' 1 ♦♦ ,�l '�•�♦ `\ ' / 3 AREA TO A8A , r i, ARE• . :z. -s .' x _ - TO INLET ♦. 1 ♦ /./ •'`` 1 \\ \ \\ \ \ \ ,, `/ _� ` 4, L. / 1. -__--- Cg- . g4-n 0.07 ACRES .\�i \ % c !♦ `�\ \\\\ , j s P / 0.27,ACRES // \ 1 5 A _ Alf T _ i V A A ` ,�� r .. •, �, � . _� ,.I� tfoz - .0- � � a t ._ �_: ,. < \;;\\`\\\\\\\\ , ���� �I ♦ 4oP 0.22 A� IMP / 0+.16 A�JMP ♦.�'♦' ��`•.r� 0.05 AC IMP: / `�� /ammoniac /' t / .. .. ��--- .�. .�° '`\`\\ ` \\\`�\\\ �, \ /, AREA TO A6 �s .t ,� ♦ �, \,\*.,\\ \., \\\\\\\ \ �y�� I 0.31 ACRES x 'if♦♦ \. ,-- ♦♦- 4 -_-_ 5. se„a -- - --, _` 1 �\ \ \ • � / \ 0.28 ACIMP r \ ♦ . ' • -• •• -.r. r _ `\ \` \ \ \\``\\ \ \\`\` \ `� ` ✓ j( / i ' o \ ♦' , ♦+ j emuks e_ ^�I �._ / �y\1 \\\\ \` • \\` p\ \\\\`\ �/ \ iY �.; ''l, s :!, ''0.09 1 //ate AlA19- \\\�\\\\\\\ \\\\\\ \ \ Ij ! �.. ' %► '♦ 7, d. ..♦r AREA TO A11 //f i I�1 / . ' ♦ r ` ♦ 0.33 ACRES \, \ vA Stev v v v \ v v v v V i _ "--A"--- ♦.I f ♦> > �, _ `v - I 4\\\\ �, AREA C A11C V\ .�\ v\ y v,v vv v , �� ,� A'.� _I ARY;+.i s V Av vv v . \ v . vim\ �'•::� t ♦ � / �� �. 0.28 AC IMP ■ r r^A11 --, /r AREA T A Z - 0.13 A IAP, j a \\ \\`\\\\\`\.\\ \ `\\\\ \\ \� L... ••c``, �./� V, / ..���' ��` if �/ O 9 j--■-1 -_IES ` / O.i�/���ir�f I... ,,�//l 1 w \ V AAA `�vvv V `�`�`�`� .�■ y ♦ 0.40 ACRES ■�� 7 ■ ■ vvv\ \ N V` `. , vvv vvv v v\ '. ,,. =�� , 01 i''r 0.39 AC IMPS -/ ■` _ __ ,It_ ,/ ,-//i7 _ igi ' _ _ A� \ \ �. `. \\`\\\\\ \ \ _ '�A ` - - ! �� - L`��i�Fil- -i" �ws-rr ice _- __ �i \ 1 I \, \ \ \\\\\`\\\\ \`\\\`� \�` yam/ \ YI� / , - ■, __ _ __ --_ i�I{ vvv\ \ y��A, v ` �� Y �fY � I \ V Avvv vv ,,,,`, ■ ..1 IMP-,, c ■ • v vv • >s � a I �/� ' ;y� : INSET DETAIL )T 1 'v \vv a� • ■ /� / - -�, �rw�curlrs9rrc- -� t ♦ 2 E AIL > 1 1 �\ G 1 \ \\ \ I/ 47Ac\ P'I\ A - \\ _-3\ ,`ilhamo '- ` \ _, 11 I. 1 \t\ - '','•`- •�:;,`.��' \ \\ I 11\\ [- 1 1 1\ \\ ii il • \\\\ \ .\\ _ \\\ r�/ 11 1 1 1 i ` \`' *�e AREA TO EX Ct ♦�!r�� ��\ �, �- 4, 0.69 ACRES ...,e \\ 1 v ♦ •■ I ♦ 1 1 1 1 ..... 0.53 AC IMP i ii )\ -••+N it 11 -- •�• :.;.,�'•� I SSE INSET DETAIL, -� '� �`��;y,, /MID 1r �� � \ � ' I II THIS PAGE /77 \� • 60 0 60 120 180 �` ♦ ♦♦ \1 1` \ '�`,'' / ........... 4,04 �� Scale: 1"=60' ��.� �\ 22 DA \ TO3S CONTE POSTDEV POA DRAINAGE MAP , • , / i �� / i / i /, / i / i / 1 i i I emu-,\— \ \ , , ,1 1. //'l ' ''/,„ice , Lij /, /, ' /i//' /i l \ I ( , ' / J \ , ; 1 1 i i i / \ o owl ! f %l / / //��/7 /�, %' ,' ' , , 1 ! , �����, — — „ a. r ONSITE POSTDEV POA a ((/ / / /1/;;'i/' �' ' = — ..�— � ��s ;, _ -- • DRAINAGE INFO TO POA 1: \\V ' ,,/ ,L,, , , ,,,, . / _„....„-,,,,- / �j(� [}+� ,fit // Jr 4.� �� ..,,, .A. //J�� O. J 01 i4� l + � / j > ,/ - arift st AC IMPERVIOUS 084 A.J /'; I �iitem / •�.� I! ,,t, ��. I �s✓I i , l.----- / ; ..T� j�'.,• l �' BYPASS 1 .\ �, , " / , /' �, 1\ \\'\'1/4 \\ `` „ 's TOpE�'EN %` % /�f r/+'% 0.01 AC IMPERVIOUS i/ % l; �y ; P a %� A/.ate ✓:' -- �; 0.34 AC WOODS HSG B v,v 1� � � 035 yv\\ ��``v ''v;\`y�;;', ` l ;r's sc r _��..✓ 4.72AC'';Ilf� � ; j �� % /%� / AC TOTAL \ \ \\` , ;`, J .,; _;, � e / BYPASS 2 i y ., 11 _ �, 0.03 AC IMPERVIOUS \\ \\ \ \. \\\\, `..• \ t/ r I ,r - -- , -� .;\t1 '6�', 0.01 AC TURF HSG B iy ' , �j v \\ \\\ y`::'s %' � v'�I - , 4 ". 250E S 0.04 ACTOTAL r'► ' 0 TO,;..; j_ \\\\ %ik �, /' , �.•. � = v� 0.13 AC IMPERVIOUS 0 `,�\ �\ \ \;;` \ 1 //; • ,�� _ r� %�� ... ' 1 0.39 AC TURF HSG B, z + / �% _ ` 0.52 AC TOTAL ::\ t \ ,\ \ \ \\ S �� ` ,fr // //� �i / �; ,, Note: the 0.38 Acre Site Area which flows to \ \ \ = / �' � Rte 250 inlets discharges into the Rivanna \ \ � �`:� v` ' / �� / �� /-,';,_ � ��/�f �`, River an met th limi f n I i r �'� .v ��� ✓ - /, ��, / � �.- _ d e s e is o a a ys s pe \ r► \:\ `;\� / ,:`y r , ,,,� i�/.iA 9VAC25-840-40, 19—b(1) & 19—b(2)(c). See •,:_e Rte 250 Inlet Analysis which shows the r __ N ;` ,AC ___,_: ' � - > ,,,, , _� adequacy of the storm drains to the point // > > / . % I� 9 Y ,\ i ,`• ,\` ,.\-,,,-.. 'eg� 1 � ,, ��i„1 \ 1 , ( I of discharge into the Rivanna River. \ \ ' •A\1 B ; \ ; �►s, -/ / I 1 \b-R:3-- .0TO - -- - - HYDROLOGIC DATA POA 1 \,� �� r � _ I i, �n `,',�i'`�',`I\ Assumed ToC to Detention = 6.0 min �l \i I __ it \\�,\ _ I1 71 I Assumed Bypass ToC 6.0 min \ �_- I 1 1 ', i `�`___., - - = -=—\ 1 Q2—YR— 4.03 cfs N\)) �` ---i I I 1 1 _ _ Q _ 12.18 cfs 1 , , `__ ec 10—YR— \\.`\` ` \� __,_ ii j % , \\ \'\I I \ \� \', i \ Q100—YR= 73.28 cfs Y Jr, �\ - a ; j \\ j I `f `\ \ I POA 2 \ il I Assumed ToC = 5.0 min N. �� I Q••• N. '. \ \ 4 /, ,' I Q2-YR- 1.01 cfs II , �. ��, I ? Q10—YR= 2.37 cfs \�`_\ ` PQA�_�1 �\` \ t, 11 1 Q - 5.31 cfs ` 100—YR— II . 80 0 80 160 240 \ . 1 �\ I= Scale: 1"=80' \ \ \ 23 1S Postdev nsite to (6s) 3S Dete tion Postdev 0 site to POA Bypass 1 2 /2N3 <4S> Dete tion Bypass 2 I 7 L 5L POA 2 POA 1 (Subca) Reach •on. MI Drainage Diagram for POSTDEV Prepared by Shimp Engineering, P.C., Printed 5/31/2019 HydroCAD®9.10 s/n 07054 ©2011 HydroCAD Software Solutions LLC 24 POSTDEV Type ll 24-hr 2-YR Rainfall=3.66" Prepared by Shimp Engineering, P.C. Printed 5/31/2019 HydroCADO 9.10 sin 07054 ©2011 HydroCAD Software Solutions LLC Page 2 Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1 S: Postdev Onsite to Runoff Area=5.560 ac 84.89% Impervious Runoff Depth=2.79" Tc=6.0 min CN=92 Runoff=25.97 cfs 1.293 af Pond 2P: Detention Peak Elev=359.24' Storage=0.527 af Inflow=25.97 cfs 1.293 af Outflow=3.95 cfs 1.293 af Subcatchment 3S: Bypass 1 Runoff Area=0.350 ac 2.86% Impervious Runoff Depth=0.44" Tc=6.0 min CN=56 Runoff=0.20 cfs 0.013 af Subcatchment 4S: Bypass 2 Runoff Area=0.040 ac 75.00% Impervious Runoff Depth=2.51" Tc=6.0 min CN=89 Runoff=0.17 cfs 0.008 af Link 5L: POA 1 Inflow=4.03 cfs 1.314 af Primary=4.03 cfs 1.314 af Subcatchment 6S: Postdev Onsite to POA 2 Runoff Area=0.560 ac 25.00% Impervious Runoff Depth=1.00" Tc=5.0 min CN=68 Runoff=1.01 cfs 0.046 af Link 7L: POA 2 Inflow=1.01 cfs 0.046 af Primary=1.01 cfs 0.046 af Total Runoff Area = 6.510 ac Runoff Volume = 1.360 af Average Runoff Depth = 2.51" 24.73% Pervious = 1.610 ac 75.27% Impervious = 4.900 ac 25 POSTDEV Type 1124-hr 10-YR Rainfall=5.54" Prepared by Shimp Engineering, P.C. Printed 5/31/2019 HydroCAD®9.10 s/n 07054 ©2011 HydroCAD Software Solutions LLC Page 11 Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Postdev Onsite to Runoff Area=5.560 ac 84.89% Impervious Runoff Depth=4.62" Tc=6.0 min CN=92 Runoff=41.55 cfs 2.140 af Pond 2P: Detention Peak Elev=362.85' Storage=0.834 af Inflow=41.55 cfs 2.140 of Outflow=11.81 cfs 2.140 af Subcatchment 3S: Bypass 1 Runoff Area=0.350 ac 2.86% Impervious Runoff Depth=1.33" Tc=6.0 min CN=56 Runoff=0.80 cfs 0.039 af Subcatchment 4S: Bypass 2 Runoff Area=0.040 ac 75.00% Impervious Runoff Depth=4.29" Tc=6.0 min CN=89 Runoff=0.29 cfs 0.014 af Link 5L: POA 1 Inflow=12.18 cfs 2.193 af Primary=12.18 cfs 2.193 af Subcatchment 6S: Postdev Onsite to POA 2 Runoff Area=0.560 ac 25.00% Impervious Runoff Depth=2.27" Tc=5.0 min CN=68 Runoff=2.37 cfs 0.106 af Link 7L: POA 2 Inflow=2.37 cfs 0.106 af Primary=2.37 cfs 0.106 af Total Runoff Area =6.510 ac Runoff Volume = 2.299 of Average Runoff Depth =4.24" 24.73% Pervious = 1.610 ac 75.27% Impervious =4.900 ac 34 0 a C) (-) (-) CO co 0 CO W CO ➢ ➢ ➢ m > D D D D D D 0 Structure Number O N W A N W (n Cr, V ➢ O O N -< N > 0 co 0 N W N N O 0 m m x X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (a (o (:u to w w (a 6 fa w w (o (o (a w (a (. (a (a (a (a N Inlet Type �:,� W co co co co co 0) co 0) co 0 CO0o C.-) CO CO CO CO CO CO CO CO O w 0 CO 0 0 0 0 0 0 0 o A o N N a) 0 0 A CO A Co (v o=w Curb Opening 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 o 0 o O a in 0) 01 w o a 6 0 a iv o w N -- o o 'co °�' ....Catchment Area Co V A 0) (O a) N a V 0 (O (n N 0 V O a A a V CO O - 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 J �1 ci in Co in :i 0 m J i" in m J in J O J (n J J it cn Runoff Coef A CO (O O) Cr, CO (n Na -` (n W CO co CO (O CO -` V W A 0) CO r 0 0 0 0 0 o O o 0 0 octoc000000ppoo - (a V) io O in N O -+ N N O -+ 10 o C. o N - O O o,CA 0 N N 0 (D A A O Co 0, V 0) ( (0 LT) A J O N (n O) (n A co O V A V A J A V A V A V A J A V A V A V A V A J A J A J A V A V A V A V A J A J A J A J A J A ? O ensy Intlt 3 in o in o(n o i.n 0 in o in o in o in o in 0 to 0 in o in o in o in 0 in o in o in o in o in o in o(n 0(n o (n 0 0 F kN Ca NJ 0 0 0 W N O O 0 0 0 0 O N -• -.L O O - 0 0 0 N-+ 0 0 0 N -•7-O O O P O O O O A _ A N O pp in CO G., Co O A O O N J A 00 CaO Ca CI,N Cr, A Cal03 Ca -+0 -•W V CO W N A N O O (j o Q Catchment 7 O co J .0) A N V 0) 0 Ca Ca 0, J A 0 0 G., A J o CO CO Co co o(n A J A GO co O o co V O O - (n A Vt N N 0 O O O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 O O O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 n 3 0 o 0 0 N o 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 v O Q carryover V 0 0 0 0 0 0 0 O O O O O O O O O O O O O O(n O O o 0 0 0 0 0 0 0 0 0 o 0 0 0 0 N 0 0 0 0 0 C (C O 7 N -• Ca N N —0 o W N O O o 0 0 0 o N O O O O O rJ 0 O O N O O O O O O O O A ti A N O O O O en W O O O A O CO N — V A CO O A 1 N 0 cr. W co (n cocoO co co AA N A N O e) ,ten—�Q Total O CO 0) (n N V CI, CD fa)CD fa O V A co O w A V N (O co O CO v.A V A co co a.o co A J O O CA A (n N O O O 0 O O O O O O O O O O O O O O O O O O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 o O o 0 0 0 0 0 0 o N Mannings N w Caw (a w CO w w (a Co w w W (a (o w w w w w w %) CO 0 0 0 0 0 0 0 0 o 0 0 0 0 0 0 0 0 0 0 0 0 0 0 m 0 0 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 W Gutter Slope 0 W N A A A A V V A W 0,- W W N O) O Cl O O O W O O O O O 0 0) W W 0 CT W CO W W 0 V 0 0 .D (/) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 o o 0 0 0 0 0 0 0 0 0 - o 0 o 0 0 0 0 0 0 0 0 0 0 0 ,pave X-sloe N N N N N Na N N N N A N N N N N N Na N N N N N-% A p j 0 0 0 0 0 O O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 CD 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0000000 0 0 0 0 0 0 0 0 o O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -,Gutter X-slope O co co co co co O c0 CO O Co O Co Co CO CO O CO CO CO CO CO 03 CO O" v,w Co Cn u)N cn A o Cn A o A N - - ,Total Gutter Co 0 0�1 O A W N i• O J• W -0 N CO O U1 a -i. W o N N A •(n N CO CO III W 0 (n V CO 0) O W a)0) J CO A W 0 0 Co V O N Co CO Cn A N O ^ O Spread O O O O O O O O O O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 O O O O N N W N N -•• -- -.O -• -- N N • v Depth at Curb A O 0 (n A V O(n CO A A CO V) O Cn A O(n Cn A Cal A -4 V (n- A N A a CD 0 0 0 0 0 0 0 0 0 O O O O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 O] 0 O 0 0 0 0 0 0 0 0 0 0 0 0 0.000 0000 0 0 �0 oO (^)— A00o 00 000o Oo6Oa0000 0000 0000 co�Efficency G) 0 0 o„° o 0 0 0 0 0 0 0 0 0 0 0°o 0 0 0 0 0 0 0 0°o a CD 0 O N N -+ NJ -• O C) O O O O O O � 0 0 �0 0 0 O O N -• 0 0 0 0 `< A N 'J o N O (,n W :co a N J A (O A + N O W W o W N A N N,Q Intercepted O co 0, O 0) N -1 O) 0 W J A CI)0 V U1 -.(O N co O(n W 00 0)0 Ca -&co A 0 O -+ 0 0 0 0 0 0 0 0 0 0 0 00000000 0 0 0 0 0 0 0 0 0 0 - N (a o 0 0 00 0000 00000000 0000 0000 oQBypassed tn 0 0 O 01 0 0 0 O O O O O O O O O 0(n O O O 0 0 0 0 O 0 N 0 0 0 0 0 0 0 0 0 0 0 0 0 0 o O 0 NN NN N -• N � N � '_.0 '_.0 AN^ N Midpoint Depth (n A O W 0 A O)W CO A CO A CO V 0 0 0 0 0 0 0 9 o 0 00 00 0 0in 'in N Curb HeightCO 333 — 0 0 0 0 0 0 0 0 o 0 0 0 0 0 0 o 0 in A A A A W A W A W N N O(n W D,H a N Co0 V CO CON (n V CO CO CO N A `< (r N aJ in o io in in o o N is, is 0 in a A •(Vn =a Midpoint Spread 0 0 (O V O N OD N 0 N 0 J 0 o V" LD-229 Storm Drain Design Computations Pantops Corner From To Catch. Runoff Increment Accum. Total Total Total Up Down Pipe Invert Pipe Pipe Velocity Flow time Structure Structure Area Coef AC AC TOC Intensity Flow Invert Invert Length Slope Diameter Capacity Increment (ac) (min) (in/hr) (cfs) Elev. Elev. (ft) % (in) (cfs) (ft/s) (min) • 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 D2 D 1* 1.66 0.69 1.15 1.15 5.00 6.81 7.86 390.20 389.70 34.31 1.46% 15 8.5 7.8 0.07 A13 Al2 0.67 0.83 0.56 0.56 5.00 6.81 3.82 385.50 378.00 107.73 6.96% 15 18.9 12.3 0.15 Al2 All 0.07 0.74 0.05 0.61 5.15 6.77 4.15 377.80 376.20 40.74 3.93% 15 14.3 10.3 0.07 A11C A11B 0.14 0.83 0.12 0.12 5.00 6.81 0.79 383.00 381.70 102.00 1.27% 15 7.9 4.1 0.41 Al B Al l A 0.24 0.77 0.18 0.30 5.41 6.69 2.01 381.50 380.20 85.59 1.52% 15 9.3 6.4 0.22 A11A All 0.00 0.00 0.00 0.30 5.64 6.63 1.99 380.00 376.20 124.03 3.06% 15 12.2 7.1 0.29 All Al 0.34 0.81 0.27 0.89 5.21 6.75 5.99 376.00 373.70 69.94 3.29% 18 18.8 10.0 0.12 Al 0 A9 0.06 0.78 0.04 0.93 5.33 6.72 6.25 373.50 363.00 95.30 11.02% 18 38.7 17.7 0.09 A9A A9 0.27 0.79 0.21 0.21 5.00 6.81 1.43 370.00 363.00 49.97 14.01% 15 26.2 11.4 0.07 A9Z A9Y 0.40 0.89 0.35 0.35 5.00 6.81 2.40 365.30 363.60 13.14 12.94% 12 13.7 12.9 0.02 A9Y A9 0.12 0.73 0.09 0.44 5.02 6.81 2.99 362.90 362.50 22.21 1.80% 15 9.4 6.8 0.05 A9 A8 0.25 0.68 0.17 1.75 5.07 6.79 11.89 362.30 360.60 45.30 3.75% 18 22.0 9.4 0.08 A8 A7 0.09 0.53 0.05 1.80 5.15 6.77 12.17 360.40 359.70 67.88 1.03% 24 24.9 8.2 0.14 A7 A6 0.00 0.00 0.00 1.80 5.29 6.73 12.10 359.50 357.90 153.65 1.04% 24 25.0 8.2 0.31 A6 A5 0.31 0.85 0.26 2.06 5.60 6.64 13.69 357.70 356.90 72.05 1.11% 24 25.7 8.4 0.14 A4 A3 11.71 354.00 352.13 15.92 11.75% 30 152.3 18.4 0.01 A3 A2 11.71 350.93 348.71 54.10 4.10% 30 90.0 12.7 0.07 A2 Al 11.71 340.52 340.00 20.24 2.57% 30 71.7 10.7 0.03 B7 B6 1.17 0.78 0.92 0.92 5.00 6.81 6.23 378.50 378.00 25.00 2.00% 15 9.9 8.5 0.05 B6 B5 0.04 0.82 0.04 0.95 5.05 6.80 6.46 377.80 376.20 134.79 1.19% 15 7.6 7.0 0.32 B5 B4 0.32 0.75 0.24 1.19 5.37 6.71 7.99 376.00 375.50 24.90 2.01% 18 16.2 9.1 0.05 B4 B3 0.00 0.00 0.00 1.19 5.42 6.69 7.98 375.30 372.70 100.38 2.59% 18 18.4 10.0 0.17 B3 B2 0.16 0.66 0.11 1.30 5.58 6.65 8.63 372.50 363.20 145.91 6.37% 18 28.7 14.2 0.17 B2 B1 0.59 0.86 0.51 1.81 5.75 6.60 11.91 363.00 359.00 40.28 9.93% 18 35.9 18.2 0.04 B1A B1 0.40 0.71 0.28 0.28 5.00 6.81 1.94 361.50 359.00 19.80 12.63°% 15 24.9 12.0 0.03 C4 C3 0.16 0.56 0.09 0.09 5.00 6.81 0.61 350.11 349.53 59.18 0.98% 15 7.0 3.4 0 29 C3 C2 0.34 0.59 0.20 0.29 5.29 6.73 1.98 349.33 348.66 67.51 0.99% 15 7.0 4.2 0.27 C2 EX. Cl 0.67 0.78 0.52 0.52 5.56 6.65 3.43 348.46 347.80 112.83 0.58% 15 5.3 3.4 0.55 `Ex. Storm Sewer Downstream D1 is adequate. See Rte 250 LD-347 53 .3A \ TOPS CO \ TE PRE—DEV DRAINAGE MAP RTE 250 INLETS --`-1 ri I/ --- 1 1 / rm A \ f' \ \I I i I f/....................../........ I 1 I j 1..._../ \..._./ , • /.'„................_� I l , \�,J I I 1 1 ^ I ,v I - ! i i , V A A A ; \ , , \ v:/ j So —47} ---_ C , _3'r I I PREDEV TO 8-420P i/ , /\\:\s‘ 1 ( 0.50 ACRESiI I 0. 5 AC IMP \\ \, / _ rI _ 1 -` / P D TO D1A�Ofi / \ -------- - -- ----- Q.8 AC IMPS - v 7 (r STR gam$ q 0 - - i 8-20P1 g I 1a / ! \ 1 \ , (II 1I0 , - , � / 1 , \ �- 1 L 1\ 1 �1 ) t ---) I--i - --. 1 f--; 1 N - n ,, PREDEV DRAINAGE INFO TO PREDEV D1: TURF HSG B: 0.67 AC IMPERVIOUS: 0.78 AC TOTAL: 1.45 AC TO PREDEV 8-20P: TURF HSG B: 0.25 AC IMPERVIOUS: 0.25 AC TOTAL: 0.50 AC HYDROLOGIC DATA TO PREDEV D1: Assumed ToC = 5.0 min Q2-YR= 4.68 cfs 010—YR= 6.16 cfs 80 0 80 160 240 TOTAL TO PREDEV 8-20P: L _ _ Q2_YR= 8.48 cfs Scale: 1"=80' Quo—YR= 11.21 cfs 56 PA \ TOPS CO \ TE POST—DEV DRAINAGE MAP RTE 250 INLETS i,r �` `'' 'l\' it ,\ i ��', Ii i' • \ • e :` (' !,f ' III. -- \ 1 \\ \1 • li II K--.) , ., ,_ V , -- --- -------- �— !A,-) 0 0 0 I 1, ;ri ,\\ `, . / x 1 iI o ;r, .... I l \ :' , Il i U % ..,' (�i � `\`, \,` =7-71 j I Ni t o 0 0 ; i , 4 . ,_-,- , s I / // , ( �.-_Z I `4 POSTDEV TO D2&D1 I ( POSTDEVT08- =� 7A2ACRES ' i %i /I J' / :a' /- - ' _ . �- ---. , _ ,_-- - -IMP_ - �'0.43 A>a{�E� �.v - - L -.D.9D AC-- M_ 32 AC 1MP. -L \. __ r�i :�„"" w�� \\\\\\\\\\\\\\\\\\\\\\\\\\\\\Zc\�\� - \\\\\\\\\\\\\\\, ,,\""+ / / c \ `\\ ST \...'`,;,,,„\L„, �\\ \ 8-20P `` - - \` ,�' \��.`\ `,\ [ /�_f—�--_ate__ ����.� ��--17 -_-4:-- / \\ '' --__��., J� , `,` `,\\ , " ��--w---,.:�— ��------� / I \` ��I/. —\ --.____, J ram' \ 1 I \ I 1I [1] , r ( riz \ i \ ) c , _______) t___, \ , I, C U I , , \ 11 ,, POSTDEV DRAINAGE INFO TO POSTEV D2 & Dl: TURF HSG B: 0.52 AC IMPERVIOUS: 0.90 AC TOTAL: 1.42 AC TO POSTEV 8-20P: • TURF HSG B: 0.11 AC • IMPERVIOUS: 0.32 AC TOTAL: 0.43 AC HYDROLOGIC DATA TO POSTEV D2 & D1: Assumed ToC = 5.0 min Q2-YR= 5.01 cfs Q10-YR= 6.60 cfs 80 0 80 160 240 TOTAL TO POSTEV 8-20P: L - - - Q2-YR= 8.92 cfs Scale: 1"=80' Q10-YR= 11.80 cfs 57 A \ TODS COR \ TER EXISTING DOWNSTREAM DRAINAGE MAP RTE 250 INLETS J iiimtel in it 1 ,--- ----- •?-*' 41! STR 6-17/ % //// _ VS TIJ 9 II'bit i , ____ ______--- -- . :: 7 1 11) --- '' '' ' -> k al' // lli170 .TR. I \ I/ / D i011 / O ///i� i 4C/ WI , 4 , I '1/4\ E::::] / o OJ /„! -- -- I Cf / Q' ///i I O —� ._ / fi \44 I m STR 6-13P STR 7-1•' ` / A. I ; ' - -1 A ....,........... A / STR 7 2P =�_ -. .., / I 8-21 417 // a : i SEE Pa Di _- 250 DRAINAGE MAP) STATE ROUTE 250 '111111IN f '--------- -------- 1 _ STATE ROUTE 250 1.1' 771),, - , i Pz STR 7-1 -10' ✓ _ / STR 7-21P % . --*////1 /J — — l O , i .)- ____7 l A r 441t /41( 1 co r -\--\\ z o � 1 --- 77,-/A ' r--- ----\ ,-, _ 1 ''----- ,. , ilk i „i ... __ ___,,,h___ I-1 --1 il , ‘ I • ,. ., 8 . 100 0 100 200 300 L _ _ - Scale: 1"=100' S8 Rte 250 LD-229 Pantops Corner From To Design Catch. Runoff Increment Accum. Total Total Total Up Down Pipe Invert Pipe Pipe Velocity Flow time Structure Structure Storm Area Coef AC AC TOC Intensity Flow Invert Invert Length Slope Diameter Capacity Increment (ac) (min) (in/hr) (cfs) Elev. Elev. (ft) / (in) (cfs) (ft/s) (min) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Predev D1 5,:.',1-' yi 389.50 377.60 263.0 4.525 15 13.70 10.6 0A 10 yr 4 1 4 n 34 Postdev D1 8-22P 2-yr 1.42 0.68 0.97 0.97 5.00 5.17 5.01 389.50 377.60 263.0 4.52% 15 13.70 10.8 0.41 10-yr 5.00 6.81 6.60 11.6 0.38 8-21 P 8-20P 2-yr 0.57 0.83 0.47 0.47 5.00 5.17 2.44 377.80 377.60 8.0 2.50% 15 10.20 6.8 0.02 (Flow to inlet did not change) 10-yr 5.00 6.81 3.21 7.0 0.02 Predev 8-20P 8-4P 2-yr 0.50 0.59 0.30 1.67 5.41 5.07 377.60 368.00 224.0 4.29% 18 21.76 11.9 0.31 10 ., 539 573 123 031 Postdev 8-20P 8-4P 2-yr 0.43 0.74 0.32 1.76 5.41 5.07 8.92 377.60 368.00 224.0 4.29%. 18 21.80 11.4 0.33 10-yr 5.38 6.70 11.80 12.9 0.29 n Row at 8-20P 2-yr 2-yr 0.44 10-yr 10-yr 0.59 Postdev Downstream Flows: 8-4P 7-22P 10-yr 0.67 0.82 0.55 2.31 5.67 6.62 15.33 367.10 361.00 291.0 2.10% 18 15.22 8.6 0.56 7-22P 7-18P 10-yr 1.14 0.84 0.96 3.28 6.23 '6.47 21.21 357.37 348.87 200.0 4.25% 18 21.66 12.3 0.27 7-18P 7-3P 10-yr 1.00 0.85 0.85 4.13 6.50 6.40 26.44 348.39 342.50 147.0 4.01% 18 18.16 10.3 0.24 7-3P 7-1P 10-yr 2.15 0.90 1.90 6.03 6.74 6.34 38.23 339.78 338.04 55.0 3.16% 24 40.21 14.6 0.06 7-1 P 6-16P 10-yr 0.32 0.85 0.28 6.30 6.80 6.33 39.88 335.40 330.40 95.0 5.26% 24 51.88 18.3 0.09 6-16P 6-17P 10-yr 0.53 0.85 0.46 6.77 6.89 6.31 42.68 330.30 312.10 79.0 23.04% 24 108.59 32.7 0.04 59 Rte 250 Inlets LD-347 Hydraulic Grade Line n=0.013 Junction Loss Outlet Inlet Water Water Surface Surface Inlet Number Elev.* Do Qo Lo Sr% H, Vo H 0 V, Q,V, H, Angle H„ Ht 1.3`H, 0.5H, Final H Elev. Rim.Elev (1) (2) (3) (4) (5) , (6) (7) (8) (9) (10) (11) (12) (13) (14) (15) (16) (17) (18) (19) (20) (21) 6-16P 313.70 2.00 42.68 79.00 3.560% 2.812 32.69 4.9781 39.88 18.30 729.9 1.820 15 0.988 7.786 10.598 324.30 338.65 7-1 P 332.00 2.00 39.88 95.00 3.109% 2.954 18.30 2.2361 38.23 14.59 557.8 1.157 40 1.421 4.814 7.768 339.77 343.58 7-3P 339.77 2.00 38.23 55.00 2.857% 1.571 14.59 0.1983 26.44 10.28 271.8 _ 0.574 5 0.098 0.871 2.442 342.21 345.50 7-18P 343.70 1.50 26.44 147.00 6.337% 9.315 10.28 0.0985 21.21 12.25 259.8 0.816 5 0.140 1.054 0.5269 9.842 353.54 354.57 _ 7-22P 353.54 1.50 21.21 200.00 4.079% 8.158 12.25 0.1165 15.33 8.60 131.8 0.402 3 0.057 0.576 0.2879 8.446 361.99 364.37 8-4P 362.20 1.50 15.33 291.00 2.130% 6.199 8.60 0.0459 11.80 12.90 152.2 0.904 1 0.103 1.054 0.5269 6.726 368.93 371.70 Postdev 8-20P 369.20 1.50 11.80 224.00 1.262% 2.828 11.40 0.0807 11.21 12.00 134.E 0.783 1 0.089 0.953 3.781 372.98 381.60 Postdev D1 378.60 1.25 6.60 263.00 1.044% 2.745 11.60 1.2537 6.60 7.75 51.1 0.326 69 0.560 2.140 1.0698 3.814 382.41 393.60 Postdev D2 390.70 1.25 6.60 8.50 1.044% 0.089 7.75 0.0373 6.60 7.75 51.1 0.009 0.037 0.084 0.1091 0.0546 0.143 390.84 393.09 `Outlet WSE is listed as the greater of either the calculated tailwater or the invert out. 60 Post-Dev Runoff Quality Calculations: Post-Dev Land Cover Map Appendix 5D Worksheets Nutrient Credit Letter of Availability 61 PAN TOPS COUNTER POST DEVELOPMENT LAND COVER MAP / ,, — SITE / BOUNDARY \ C— ) �� , IfI \\ /' ` 1 I _ II 1 I f. OFFSITE AREA ,,\\\\ '� — — 1 I (RTE 250 ROW I1 IMPROVEMENTS) I i I 4, 0,‘ ‘ r? " r r a 1 I I il l _) it I1 I 11 I \\`� \ y IMPERVIOUS (TYP.) _ i I ! it i; !! \ \, C !� - ! r IMPERVIOUS (TYP.) II 11 ;�� - I d , •� •� p• ;! 11 APPLICABLE AREA. � , % -----,.., i lI I iii li 6. 67 AC ONSITE + __ • , I .O •�• •n• I' ! 0. 15 AC OFFSITE `t` �� �, II 6. 82 AC TOTAL \ rn \ . li \ \�, -\ lq:7 - ! .1 - ONSITE AREA: 5. 11 AC IMP \ � \ 1 .56 AC PERV `;;;\ ram-jp OFFSITE AREA: \ \t �- j a .44 0. 12 AC I V P `\ � ` `� r/ �� 0.03 AC PEV \ , \ \ - I \\ 1\ti -,,, IMPERVIOUS (TYP.) ! f I \\ \\ �' // a ',� TOTAL AREA: \\ \ ��`�; 1 5. 23 AC IMP \ ,� I 1 . 59 AC PERV , 1 i [ [I L. Li I Li [ [ cl 1_______L._____IAA 1 1 \ ; Ns .�' A I __- ' I 1 �_ 1 i 1 1 • \ :; $; A W I I 1 ' 1 I I 1 \ IMPROVEMENTS) �,� N\�,' ' i ' i �__ _ , 80 0 80 160 240 ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ Scale: 1"=80' 62 Pantops Corner - Appendix 5D Nutrient Requirement Spreadsheet Worksheet 1 page 1 of 3 STEP 1 Determine the applicable area(A) and the post-developed impervious cover(Ipost). (6.67 acres onsite +0.15 acres Applicable Area(A)* = 6.82 acres offsite ROW improvements Post-development impervious cover: Total = 5.23 acres 'post= (total post-development impervious cover_A) x 100= 76.7% * The area subject to the criteria may vary from locality to locality. Therefore, consult the locality for proper determination of this value. STEP 2 Determine the average land cover condition (Iwatershed) or the existing impervious cover(Iexisting). Average land cover condition (I,,,,te=shed : If the locality has determined land cover conditions for individual watersheds within its jurisdiction, use the watershed specific value determined by the locality as'watershed. 'watershed = Otherwise, use the Chesapeake Bay default value: 'watershed = 16% 63 PERFORMANCE-BASED WATER QUALITY CALCULATIONS Worksheet 1 page 2 of 3 Existing impervious cover (ley;s,i„g): Determine the existing impervious cover of the development site if present. Existing impervious cover: Total= 0.27 acres 'existing= (total existing impervious cover_A*) x 100= 4% * The area should be the same as used in STEP 1 STEP 3 Determine the appropriate development situation. The site information determined in STEP 1 and STEP 2 provide enough information to determine the appropriate development situation under which the performance criteria will apply. Check (\I) the appropriate development situation as follows: Situation 1: This consists of land development where the existing percent impervious cover('existing) is less than or equal to the average land cover condition ('watershed) and the proposed improvements will create a total percent impervious cover('post) which is less than or equal to the average land cover condition(' atershed)• 'post 'watershed 64 PERFORMANCE-BASED WATER QUALITY CALCULATIONS Worksheet 1 page 3 of 3 _A_Situation 2: This consists of land development where the existing percent impervious cover('existing) is less than or equal to the average land cover condition ('watershed) and the proposed improvements will create a total percent impervious cover('post) which is greater than the average land cover condition (Iwatershed)• 'existing <'watershed ; and 'post > 'watershed Situation 3: This consists of land development where the existing percent impervious cover('existing) is greater than the average land cover condition (Iwatershed). 'existing 4.0% > 'watershed 16.0% ; and Situation 4: This consists of land development where the existing percent impervious cover ('existing) is served by an existing stormwater management BMP(s)that addresses water quality. If the proposed development meets the criteria for development Situation 1,than the low density development is considered to be the BMP and no pollutant removal is required. The calculation procedure for Situation 1 stops here. If the proposed development meets the criteria for development Situations 2,3,or 4,then proceed to STEP 4 on the appropriate worksheet. 65 Pantops Corner - Appendix 5D Nutrient Requirement Spreadsheet Worksheet 2 page 1 of 3 Summary of Situation 2 criteria: from calculation procedure STEP 1 thru STEP 3, Worksheet 1: Applicable area (A)* = 6.82 acres 'post= (total post-development impervious cover_A) x 100= 76.7% 'watershed= % or 'watershed= 16% existing= (total existing impervious cover-A*) x 100= 3.96% 'existing 4.0% <'watershed 16.0% ; and 'post 76.7% >'watershed 16.0% STEP 4 Determine the relative pre-development pollutant load (Lpre). Lpre(watershed)= [0.05 + (0.009 x 'watershed)] x A x 2.28 (Equation 5-16) where: Lpre(watershed)= relative pre-development total phosphorous load(pounds per year) 'watershed= average land cover condition for specific watershed or locality or the Chesapeake Bay default value of 16% (percent expressed in whole numbers) A= applicable area(acres) Lpre(watershed) = [0.05+ (0.009 X 16.0%)1 X 6.82 X 2.28 3.02 pounds per year 66 PERFORMANCE-BASED WATER QUALITY CALCULATIONS Worksheet 2 page 2 of 3 STEP 5 Determine the relative post-development pollutant load (Lp„st). Lpost = [0.05 + (0.009 x Ipost)] x A x 2.28 (Equation 5-21) where: Lpost= relative post-development total phosphorous load (pounds per year) Ipost= post-development percent impervious cover(percent expressed in whole numbers) A = applicable area (acres) Lpost = [0.05 + (0.009 x 76.7%)1 x 6.82 x 2.28 11.51 pounds per year STEP 6 Determine the relative pollutant removal requirement (RR). RR = Lpost - Lpre(watershed) RR = 11.51 - 3.02 pounds per year STEP 7 Identify best management practice (BMP) for the site. 1. Determine the required pollutant removal efficiency for the site: EFF = ( RR/Lpost) x 100 (Equation 5-22) where: EFF= required pollutant removal efficiency(percent expressed in whole numbers) RR= pollutant removal requirement (pounds per year) Lpost = relative post-development total phosphorous load (pounds per year) EFF= (8.49 - 11.51) x 100 74 % 67 PERFORMANCE-BASED WATER QUALITY CALCULATIONS Worksheet 2 page 3 of 3 2. Select BMP(s) from Table 5-14 and locate on the site: BMP 1: Bioretention filter 3. Determine the pollutant load entering the proposed BMP(s): LBMP= [0.05 + (0.009 x IBMP)] x A x 2.28 (Equation 5-23) where: LBMP= relative post-development total phosphorous load entering proposed BMP(pounds per year) IBMP= post-development percent impervious cover of BMP drainage area (percent expressed in whole numbers) A= drainage area of proposed BMP (acres) LBMP1 = [0.05+ (0.009 x x 2.28 = 0.00 pounds per year 4. Calculate the pollutant load removed by the proposed BMP(s): Lremoved= EfBMP x LBMP (Equation 5-24) where: 'removed = post-development pollutant load removed by proposed BMP (pounds per year) EffBMP = pollutant removal efficiency of BMP(expressed in decimal form) LBMP = relative post-development total phosphorous load entering proposed BMP (pounds per year) LremovedBMP1 = 0.65 x 0.00= 0.00 pounds per year 5. Calculate the total pollutant load removed by the BMP(s): Lremoved/total=Lremoved/BMP1 (Equation 5-25) 0.00 pounds per year 6. Verify Compliance: Lremoved/total >- RR 0.00 >_ _ 68 Rivanna River Nutrient Bank Certificate No. James-039 May 31, 2019 Keane Rucker, E.I.T. Civil Engineer Shimp Engineering keane@shimp-engineering.com Phone: 434.299.9843 Project Name: Pantops Corner Location: Albemarle County, Tax Map 78 Parcels 5A, 5B, 5E, & 58G1 Owner: Pantops Corner LC 12704 Crimson Ct Ste. 101 Henrico Va, 23233 Credit Amount Desired: 8.49 lbs Project HUC: 020802040401 Rivanna River-Meadow Creek Dear Keane, This letter is to confirm the availability of authorized Nutrient Credits sufficient to meet your projects requirements of 8.49 Nutrient Credits at our above referenced nutrient offset credit bank facility (the "Bank"), which is registered with the Virginia Department of Environmental Quality (DEQ. These Nutrient Credits are generated and managed under the terms of the Reduction Implementation Plan for the Bank dated November 2017, which was authorized by the Virginia Department of Environmental Quality (DEQ) on September 5, 2018. The Bank has been authorized to provide Nutrient Credits for use in the James River watershed. These credits are transferable to those entities regulated under DEQ's Storm Water Management program in accordance with VA Code 62.1-44.15:27. If we can provide further assistance please feel free to contact our office. Hotel Street Capital, LLC, Bank Sponsor By Its Manager Thomas James Ross II 540-687-0171 Rivanna River Nutrient Offset Trading Bank,31 Garrett Street,Warrenton,Virginia 20186 69 Independent Reports: Excerpt from NRCS Soils Report NOAA Precipitation Report 70 Custom Soil Resource Report Map—Hydrologic Soil Group In h h 723340 723390 723440 723490 723540 723590 723640 38°2 14"N - 38'2'14"N • .1k•: e.'. r '' . .4 LR ,� -ICJ . N. 1 tf .4i. wY � • 79 B cr (4\ A**s • • ' i": • - fss co N •�1 ,v, ♦ N pp N Q a r, ' v MIME q «.. • I t` Ad f '� / n v •N `� j ` j ... • p ,i_ R �� 11 r SS .,. 1/..i1 N rr ' 1 t� 4"6i3. ., r v .7117 lri all. .a, 3 '+ `YAWN$`kAIIM•YAA 111 `."•'•'•. � u 38°1'59"N • �• 38°I'59 N 723340 723390 723440 723490 723540 723590 723640 3 3 LA In N Map Scale:1:2,150 if printed on A portrait(8.5"x 11")sheet. ,^„ Metzrs N 0 30 60 120 180 A — ,Feet 0 100 200 400 600 Map projection:Web Mercator Comer coordinates:WGS84 Edge tics:UTM Zone 17N WGS84 19 72 Custom Soil Resource Report MAP LEGEND MAP INFORMATION Area of Interest(AOI) ■ C The soil surveys that comprise your AOI were mapped at 1:15,800. n Area of Interest(AOI) ■ C/D Soils • D Warning:Soil Map may not be valid at this scale. Soil Rating Polygons A p Not rated or not available Enlargement of maps beyond the scale of mapping can cause Water Features misunderstanding of the detail of mapping and accuracy of soil line A/D placement.The maps do not show the small areas of contrasting Streams and Canals B soils that could have been shown at a more detailed scale. Transportation I. B/D 4-414 Rails Please rely on the bar scale on each map sheet for map C ,y Interstate Highways measurements. C/D 4011.0. US Routes Source of Map: Natural Resources Conservation Service EZI D Major Roads Web Soil Survey URL: http://websoilsurvey.nres.usda.gov 0 Not rated or not available Local Roads Coordinate System: Web Mercator(EPSG:3857) Soil Rating Lines Background Maps from the Web Soil Survey are based on the Web Mercator ^o A . Aerial Photography projection,which preserves direction and shape but distorts A/D distance and area.A projection that preserves area,such as the Albers equal-area conic projection,should be used if more accurate ./ B calculations of distance or area are required. - B/D This product is generated from the USDA-NRCS certified data as of ""— C the version date(s)listed below. C/D D Soil Survey Area: Albemarle County,Virginia Survey Area Data: Version 10,Dec 11,2013 r r Not rated or not available Soil Rating Points Soil map units are labeled(as space allows)for map scales 1:50,000 or larger. • A • A/D Date(s)aerial images were photographed: May 10,2010—Jun 4, • B 2011 ■ B/D The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps.As a result,some minor shifting of map unit boundaries may be evident. 20 73 Custom Soil Resource Report Table—Hydrologic Soil Group Hydrologic Soil Group—Summary by Map Unit—Albemarle County,Virginia(VA003) Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 12C Catoctin silt loam, 7 to 15 B 0.6 3.8% percent slopes 12D Catoctin silt loam,15 to B 1.2 7.9% 25 percent slopes 23B Davidson clay loam,2 to B 6.6 42.9% 7 percent slopes 23C Davidson clay loam,7 to B 1.2 8.0% 15 percent slopes 79B Starr silt loam,2 to 7 B 0.4 2.6% percent slopes 88 Udorthents,loamy 5.3 34.8% Totals for Area of Interest 15.3 100.0% Rating Options—Hydrologic Soil Group Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Tie-break Rule: Higher 21 74 References American Association of State Highway and Transportation Officials(AASHTO).2004. Standard specifications for transportation materials and methods of sampling and testing. 24th edition. American Society for Testing and Materials (ASTM). 2005. Standard classification of soils for engineering purposes. ASTM Standard D2487-00. Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of wetlands and deep-water habitats of the United States. U.S. Fish and Wildlife Service FWS/OBS-79/31. Federal Register. July 13. 1994. Changes in hydric soils of the United States. Federal Register. September 18, 2002. Hydric soils of the United States. Hurt, G.W., and L.M.Vasilas,editors.Version 6.0, 2006. Field indicators of hydric soils in the United States. National Research Council. 1995. Wetlands: Characteristics and boundaries. Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service. U.S. Department of Agriculture Handbook 18. http://www.nres.usda.gov/wps/portal/nres/ detail/national/soils/?cid=nres142p2_054262 Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for making and interpreting soil surveys. 2nd edition. Natural Resources Conservation Service, U.S. Department of Agriculture Handbook 436. http://www.nres.usda.gov/wps/portal/ nres/detail/national/soils/?cid=nres142p2_053577 Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of Agriculture. Natural Resources Conservation Service. http://www.nres.usda.gov/wps/ portal/nres/detail/national/soils/?cid=nres142p2_053580 Tiner, R.W.. Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and Delaware Department of Natural Resources and Environmental Control, Wetlands Section. United States Army Corps of Engineers. Environmental Laboratory. 1987. Corps of Engineers wetlands delineation manual. Waterways Experiment Station Technical Report Y-87-1. United States Department of Agriculture, Natural Resources Conservation Service. National forestry manual. http://www.nrcs.usda.gov/wps/portal/nrcs/main/national/ landuse/forestry/pub/ United States Department of Agriculture, Natural Resources Conservation Service. National range and pasture handbook. http://www.nres.usda.gov/wps/portal/nres/ detail/national/landuse/rangepasture/?cid=stelprdb1043084 22 75 Custom Soil Resource Report United States Department of Agriculture, Natural Resources Conservation Service. National soil survey handbook, title 430-VI. http://www.nrcs.usda.gov/wps/portal/ n res/detail/soils/scientists/?cid=nres142p2_054242 United States Department of Agriculture, Natural Resources Conservation Service. 2006. Land resource regions and major land resource areas of the United States, the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook 296. http://www.nres.usda.gov/wps/portal/nres/detail/national/soils/? cid=nres142p2_053624 United States Department of Agriculture, Soil Conservation Service. 1961. Land capability classification. U.S. Department of Agriculture Handbook 210. http:// www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052290.pdf 23 76 NOAA Atlas 14,Volume 2,Version 3 " '-., Location name:Charlottesville,Virginia,USA* f" "*, Latitude:38.0347°,Longitude:-78.453° LOAF Elevation:396.01 ft** +`l source:ESRI Maps " source:USGS POINT PRECIPITATION FREQUENCY ESTIMATES G.M Bonnin,D.Martin,B.Lin,T.Parzybok,M.Yekta,and D.Riley NOAA,National Weather Service,Silver Spring,Maryland PF tabular I PF graphical I Maps & aerials PF tabular PDS-based point precipitation frequency estimates with 90%confidence intervals(in inches)1 Average recurrence interval(years) Duration 1 2 5 10 25 50 100 200 500 1000 5-min 0.353 0.420 0.492 0.553 0.623 0.677 0.728 0.775 0.832 0.878 (0.318-0.392) (0.379-0.466) (0.443-0.545) (0.497-0.613) (0.557-0.687) (0.603-0.746) (0.645-0.802) (0.682-0.854) (0.724-0.919) (0.758-0.974) 10-min 0.564 0.672 0.788 0.885 0.993 1.08 1.16 1.23 1.32 1.38 (0.508-0.626) (0.606-0.745) (0.709-0.873) (0.795-0.980) (0.888-1.10) (0.961-1.19) (1.02-1.27) (1.08-1.35) (1.15-1.45) (1.19-1.53) 15-min 0.705 0.844 0.996 1.12 1.26 1.37 1.46 1.55 1.66 1.74 (0.635-0.783) (0.762-0.937) (0.897-1.10) (1.01-1.24) (1.13-1.39) (1.22-1.51) (1.29-1.61) (1.36-1.71) (1.44-1.83) (1.50-1.93) 30-min 0.966 1.17 1.42 1.62 1.86 2.06 2.24 2.41 2.64 2.81 (0.870-1.07) (1.05-1.29) (1.27-1.57) (1.46-1.80) (1.67-2.06) (1.83-2.27) (1.98-2.47) (2.12-2.66) (2.30-2.91) (2.43-3.12) 60-min 1.21 1.46 1.82 2.11 2.48 2.79 3.08 3.39 3.78 4.11 (1.09-1.34) (1.32-1.62) (1.63-2.01) (1.90-2.34) (2.22-2.74) (2.48-3.07) (2.73-3.40) (2.98-3.73) (3.29-4.18) (3.54-4.55) 2-hr 1.45 1.76 2.19 2.58 3.07 3.48 3.91 4.35 4.96 5.47 (1.27-1.66) (1.54-2.00) (1.93-2.50) (2.27-2.93) (2.68-3.48) (3.03-3.94) (3.37-4.42) (3.73-4.91) (4.20-5.60) (4.59-6.20) 3-hr 1.59 1.92 2.40 2.81 3.35 3.81 4.28 4.76 5.43 6.00 (1.39-1.82) (1.68-2.20) (2.10-2.76) (2.45-3.22) (2.91-3.83) (3.29-4.34) (3.67-4.87) (4.05-5.43) (4.57-6.20) (4.99-6.86) 6-hr 2.02 2.43 3.02 3.56 4.28 4.91 5.57 6.28 7.28 8.17 (1.79-2.29) (2.15-2.76) (2.66-3.43) (3.12-4.03) (3.73-4.84) (4.25-5.53) (4.77-6.28) (5.32-7.08) (6.09-8.22) (6.74-9.23) 12-hr 2.53 3.05 3.80 4.51 5.48 6.36 7.30 8.33 9.85 11.2 (2.24-2.90) (2.69-3.50) (3.34-4.35) (3.95-5.15) (4.76-6.24) (5.47-7.22) (6.20-8.27) (6.99-9.43) (8.11-11.2) (9.09-12.7) 24-hr m in4.68 11. 6.81 7.90 aim 10.4 12.4 14.1 (2.72-3.40) (3.29-4.12) (4.19-5.26) (4.94-6.20) (6.03-7.59) (6.95-8.79) (7.94-10.1) (9.00-11.6) (10.5-13.8) (11.8-15.7) 2-day 3.57 4.33 5.51 6.48 7.88 9.06 10.3 11.7 13.8 15.5 (3.20-3.99) (3.89-4.84) (4.93-6.15) (5.78-7.22) (6.99-8.77) (7.98-10.1) (9.04-11.5) (10.2-13.1) (11.8-15.4) (13.1-17.3) 3-day 3.80 4.61 5.86 6.88 8.37 9.62 11.0 12.4 14.6 16.4 (3.45-4.21) (4.18-5.11) (5.30-6.49) (6.22-7.61) (7.52-9.24) (8.58-10.6) (9.72-12.1) (10.9-13.7) (12.7-16.2) (14.1-18.2) 4-day 4.03 4.89 6.21 7.29 8.86 10.2 11.6 13.1 15.4 17.3 (3.70-4.44) (4.47-5.37) (5.68-6.82) (6.65-8.00) (8.05-9.71) (9.19-11.2) (10.4-12.7) (11.7-14.4) (13.5-16.9) (15.0-19.1) 7-day 4.69 5.64 7.06 8.22 9.89 11.3 12.8 14.4 16.7 18.6 (4.31-5.11) (5.19-6.16) (6.47-7.70) (7.52-8.96) (9.00-10.8) (10.2-12.3) (11.5-13.9) (12.8-15.7) (14.7-18.3) (16.2-20.4) 10-day 5.31 6.38 7.88 9.10 10.8 12.2 13.7 15.3 17.5 19.4 (4.91-5.75) (5.89-6.90) (7.27-8.52) (8.37-9.84) (9.91-11.7) (11.1-13.2) (12.4-14.8) (13.8-16.6) (15.6-19.0) (17.1-21.1) 20-day 6.98 8.32 10.1 11.4 13.3 14.7 16.2 17.7 19.8 21.4 (6.53-7.47) (7.80-8.91) (9.41-10.8) (10.7-12.2) (12.3-14.2) (13.6-15.7) (15.0-17.4) (16.3-19.0) (18.1-21.3) (19.4-23.1) 30-day 8.56 10.1 12.0 13.4 15.3 16.7 18.0 19.4 21.1 22.5 (8.06-9.11) (9.55-10.8) (11.3-12.8) (12.6-14.3) (14.3-16.2) (15.6-17.7) (16.8-19.2) (18.0-20.6) (19.5-22.6) (20.7-24.1) 45-day 10.7 12.6 14.8 16.4 18.4 19.9 21.4 22.8 24.6 26.0 (10.1-11.3) (11.9-13.4) (13.9-15.6) (15.4-17.3) (17.3-19.5) (18.7-21.1) (20.0-22.7) (21.3-24.2) (22.9-26.2) (24.0-27.7) 60-day 12.5 14.8 17.0 18.7 20.9 22.5 24.0 25.5 27.3 28.7 (11.9-13.2) (14.0-15.6) (16.1-18.0) (17.7-19.8) (19.7-22.1) (21.2-23.7) (22.6-25.4) (23.9-27.0) (25.5-29.0) (26.7-30.5) 1 Precipitation frequency(PF)estimates in this table are based on frequency analysis of partial duration series(PDS). Numbers in parenthesis are PF estimates at lower and upper bounds of the 90%confidence interval.The probability that precipitation frequency estimates(for a given duration and average recurrence interval)will be greater than the upper bound(or less than the lower bound)is 5%.Estimates at upper bounds are not checked against probable maximum precipitation(PMP)estimates and may be higher than currently valid PMP values. Please refer to NOAA Atlas 14 document for more information. Back to Top PF graphical 77 Section 6. Pollution Prevention Plan. (reference County Code 17-404 and State Regulation 9VAC25-880-70 part II section A.4) A. 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Sources of Pollutants, locations, and prevention practices Pollutant,or Pollutant Prevention Practices, Generating Activity Location on site Control Measures C. Sources of Pollutants continued. Common activities and minimum control and prevention practices Pollutant,or Pollutant Prevention Practices, Generating Activity Location on site Control Measures Follow Erosion and Sediment Control Clearing,grading,excavating,and un- Land disturbance area Plan. Dispose of clearing debris at stabilized areas acceptable disposal sites.Seed and mulch, or sod within 7 days of land clearing Cover storm drain inlets and use drip pans Paving operations Roads and driveways and absorbent/oil dry for all paving machines to limit leaks and spills Direct concrete wash water into a leak- Concrete washout and Current location and detail shown on proof container or leak-proof settling basin cement waste plan that is designed so that no overflows can occur Enclose or cover material storage areas. Mix paint indoors in a containment area or Structure construction,stucco, Structures in a flat unpaved area.Prevent the painting, and cleaning discharge of soaps,solvents,detergents and wash water,paint,form release oils and curing compounds. Water shall be filtered,settled or similarly Dewatering operations Dewatering sites shown on plan treated prior to discharge as shown on plan. Designated areas for material delivery and Material delivery and storage Designated area shown on plan storage. Placed near construction entrances,away from waterways and drainage paths Material use during building process Building areas Follow manufacturer's instructions. MSDS's attached. Waste collection area will not receive a substantial amount of runoff from upland areas and does not drain directly to a Issued— 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Pollutant,or Pollutant Location on site Prevention Practices, Generating Activity Control Measures Current designated container areas on waterway. Containers have lids covered Solid waste disposal plan before periods of rain,or are in a covered area. Scheduled collection to prevent overfilling.MATERIALS NOT TO BE BURIED ON-SITE Convenient and well-maintained portable sanitary facilities will be provided,and Sanitary waste Current locations shown on plan located away from waterways or inlets. Such facilities shall be regularly maintained. Apply fertilizers in accordance with Landscaping operations Landscape areas shown on plan manufacturer's recommendations and not during rainfall events To be treated in a sediment basin or better Wash Waters Wash areas shown on plan control as specified on plan.Minimize the discharge of pollutants from equipment and vehicle washing Vehicle and equipment washing Designated areas and details shown on Provide containment and filtering for all plan wash waters per the plan Minimization of exposure to precipitation and stormwater.Minimize the exposure of building materials,building products, construction wastes,trash, landscape materials,fertilizers,pesticides,herbicides,detergents, sanitary waste,and other materials present on the site to precipitation and to stormwater. (Identify all non-stormwater discharges to occur on your site. Keep this plan up-to-date with ongoing site changes and inspections. See CGP, 9VAC25-880-70 section.E for examples of non-stormwater discharges.) D. Non-stormwater discharges Discharge Pollutants or Pollutant Location on Site Constituents Dust Control Treatment chemicals Designated areas and details shown on plan E. Persons responsible for pollution prevention practices Issued — 10/2014 Stormwater Pollution Prevention Plan(SWPPP)Albemarle County To be determined when contractor is selected. Section shall be updated with Responsible Land Disturber(RLD) information by developer or agent. F. Response and reporting practices Minimize discharges from spills and leaks.Minimize the discharge of pollutants from spills and leaks and implement chemical spill and leak prevention and response procedures as follows.To the extent practical,do not store oils, chemicals, or other potential contaminants on site. When storage of potential contaminants is required,provide secondary containment, such as spill berms or spill containment pallets.These should be located within the drainage areas to a sediment trap or sediment basin. Direct concrete wash water into a settling basin,dispose of hardened concrete with other construction waste debris to an appropriate waste facility. Respond to all spills, leaks and discharges as follows. Spills of oil, petroleum products, sanitary wastes,and substances listed under 40 CFR parts 110, 117, and 302 should be cleaned up as soon as possible while protecting worker safety. Construct an earthen dike around any spills on dirt to prevent spreading. If a spill occurs during rainfall, cover it with a tarp or another impermeable cover to prevent contaminating runoff.Do not bury any spills or wash them with water. Maintain a spill kits in a readily accessible location.A spill kit shall consist of a lined drum with bags of universal sorbents in the bottom, accessible without tipping the drum, sorbent socks above the bags, and personal protective equipment on the top.All materials used to remove the contaminants, including any water used to rinse equipment, and all dirt removed must be treated as contaminated. Textiles, such as from coveralls,may be sent to a certified laundry facility. Waste must be disposed of according to the standards of Albemarle County and the Commonwealth of Virginia. Store hazardous materials and wastes in covered containers. Report all spills, leaks and discharges as follows: All spills, leaks, and discharges shall be recorded in the inspection logs. If construction activity results in a discharge of contaminants that may be reasonably expected to enter surface waters,the operator shall notify the Department of Environmental Quality immediately or within 24 hours, and shall submit a written report within five days. For significant spills that cannot be controlled by personnel in the immediate vicinity, notify the local emergency response by dialing 911. Albemarle County must also be notified,and potentially some of the following agencies: the Fire Department,the Public Works Department,the Coast Guard,the Highway Patrol,the County Police Department, Department of Toxic Substances, OSHA,etc. For spills of federal reportable quantities, in conformance with the requirements in 40 CFR parts 110, 119,and 302,the contractor should notify the National Response Center at(800) 424-8802. G. Pollution Prevention Awareness The engineer, project superintendent, and contractor shall have weekly meetings to review on-site conditions and advise contractor of potential risks that should be addressed. Contractor will be responsible for following procedures on a daily basis and applying appropriate waste management and prevention practices to be in compliance with the conditions of the general permit. Employees shall be informed of the danger to nature and to human health of various chemical spills. Section 7. Discharges to impaired waters, surface waters within an applicable TMDL wasteload allocation, and exceptional waters. Issued— 10/2014 Stormwater Pollution Prevention Plan(SWPPP) Albemarle County Water discharges into an impaired water: Rivanna River—Meadow Creek. Meadow Creek was listed as impaired due to Benthic-Macroinvertebrate Bioassessments for E-Coli and Fecal Coliforms. Site work shall be in compliance with the following requirements: 1. Permanent or temporary soil stabilization shall be applied to denuded areas within seven days after final grade is reached on any portion of the site; 2. Nutrients shall be applied in accordance with manufacturer's recommendations or an approved nutrient management plan and shall not be applied during rainfall events;and 3. In accordance with Part I B 4 and Part I B 5, inspections shall be conducted as follows: I. Inspections shall be conducted at a frequency of(i)at least once every four business days or(ii)at least once every five business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days,the inspection shall be conducted on the next business day; and II. Representative inspections used by utility line installation, pipeline construction,or other similar linear construction activities shall inspect all outfalls discharging to exceptional waters. Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 8. Qualified personnel The following personnel are responsible for inspections; To Be Determined The Operator or duly authorized representative will serve as the qualified personnel. This may include delegating this responsibility to other contractors as they become involved with the project. The SWPPP will be updated when contractor is hired Issued— 10/2014 Stormwater Pollution Prevention Plan(SWPPP) Albemarle County Section 9. Signed Certification CERTIFICATION "I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations." f4 Owner/Operator Name: M 1 c/i ct l' 1 i t 1 C L ` \, kr Company: [Cfi h(1' t,, h,t/ L. c►q/ ' �,, . 1 t Title: viaiA q,ew L. Signature: ilin/yn /6 - Date: Lf it-4 ) ( 3 Section 10. Delegation of authority. Delegation of Authority I, Mike McGowan, hereby designate the person or specifically described position below to be a duly authorized representative for the purpose of overseeing compliance with environmental requirements, including the Construction General Permit, at the Pantops Corner construction site. The designee is authorized to sign any reports, stormwater pollution prevention plans and all other documents required by the permit. (name of person or position) (company) (address) (city, state, zip) (phone) By signing this authorization, I confirm that I meet the requirements to make such a designation as set forth in the Construction General Permit (CGP), and that the designee above meets the definition of a "duly authorized representative". Operator Name: Company: Title: Signature: Date: Issued— 10/2014 Stormwater Pollution Prevention Plan(SWPPP) Albemarle County Section 11. General permit copy Issued— 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County 4**) COMMONWEALTH of VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY General Permit No.: VAR10 Effective Date: July 1, 2014 Expiration Date: June 30, 2019 GENERAL VPDES PERMIT FOR DISCHARGES OF STORMWATER FROM CONSTRUCTION ACTIVITIES AUTHORIZATION TO DISCHARGE UNDER THE VIRGINIA STORMWATER MANAGEMENT PROGRAM AND THE VIRGINIA STORMWATER MANAGEMENT ACT In compliance with the provisions of the Clean Water Act, as amended, and pursuant to the Virginia Stormwater Management Act and regulations adopted pursuant thereto, operators of construction activities are authorized to discharge to surface waters within the boundaries of the Commonwealth of Virginia, except those specifically named in State Water Control Board regulations that prohibit such discharges. The authorized discharge shall be in accordance with this cover page, Part I - Discharge Authorization and Special Conditions, Part II - Stormwater Pollution Prevention Plan, and Part III - Conditions Applicable to All VPDES Permits as set forth herein. General Permit No.: VAR10 Page 1 of 23 PART I DISCHARGE AUTHORIZATION AND SPECIAL CONDITIONS A. Coverage under this general permit. 1. During the period beginning with the date of coverage under this general permit and lasting until the general permit's expiration date, the operator is authorized to discharge stormwater from construction activities. 2. This general permit also authorizes stormwater discharges from support activities (e.g., concrete or asphalt batch plants, equipment staging yards, material storage areas, excavated material disposal areas, borrow areas) located on-site or off-site provided that: a. The support activity is directly related to the construction activity that is required to have general permit coverage for discharges of stormwater from construction activities; b. The support activity is not a commercial operation, nor does it serve multiple unrelated construction activities by different operators; c. The support activity does not operate beyond the completion of the last construction activity it supports; d. The support activity is identified in the registration statement at the time of general permit coverage; e. Appropriate control measures are identified in a stormwater pollution prevention plan and implemented to address the discharges from the support activity areas; and f. All applicable state, federal, and local approvals are obtained for the support activity. B. Limitations on coverage. 1. Post-construction discharges. This general permit does not authorize stormwater discharges that originate from the site after construction activities have been completed and the site, including any support activity sites covered under the general permit registration, has undergone final stabilization. Post-construction industrial stormwater discharges may need to be covered by a separate VPDES permit. 2. Discharges mixed with nonstormwater. This general permit does not authorize discharges that are mixed with sources of nonstormwater, other than those discharges that are identified in Part I E (Authorized nonstormwater discharges) and are in compliance with this general permit. 3. Discharges covered by another state permit. This general permit does not authorize discharges of stormwater from construction activities that have been covered under an individual permit or required to obtain coverage under an alternative general permit. 4. Impaired waters and TMDL limitation. Discharges of stormwater from construction activities to surface waters identified as impaired in the 2012 § 305(b)/303(d) Water Quality Assessment Integrated Report or for which a TMDL wasteload allocation has been established and approved prior to the term of this general permit for (i) sediment or a sediment-related parameter (i.e., total suspended solids or turbidity) or (ii) nutrients (i.e., nitrogen or phosphorus) are not eligible for coverage under this general permit unless the operator develops, implements, and maintains a SWPPP that minimizes the pollutants of concern and, when applicable, is consistent with the assumptions and requirements of the approved TMDL wasteload allocations. In addition, the operator shall implement the following items: General Permit No.: VAR10 Page 2 of 23 a. The impaired water(s), approved TMDL(s), and pollutant(s) of concern, when applicable, shall be identified in the SWPPP; b. Permanent or temporary soil stabilization shall be applied to denuded areas within seven days after final grade is reached on any portion of the site; c. Nutrients shall be applied in accordance with manufacturer's recommendations or an approved nutrient management plan and shall not be applied during rainfall events; and d. The applicable SWPPP inspection requirements specified in Part II F 2 shall be amended as follows: (1) Inspections shall be conducted at a frequency of (i) at least once every four business days or (ii) at least once every five business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days, the inspection shall be conducted on the next business day; and (2) Representative inspections used by utility line installation, pipeline construction, or other similar linear construction activities shall inspect all outfalls discharging to surface waters identified as impaired or for which a TMDL wasteload allocation has been established and approved prior to the term of this general permit. 5. Exceptional waters limitation. Discharges of stormwater from construction activities not previously covered under the general permit issued in 2009 to exceptional waters identified in 9VAC25-260-30 A 3 c are not eligible for coverage under this general permit unless the operator implements the following: a. The exceptional water(s) shall be identified in the SWPPP; b. Permanent or temporary soil stabilization shall be applied to denuded areas within seven days after final grade is reached on any portion of the site; c. Nutrients shall be applied in accordance with manufacturer's recommendations or an approved nutrient management plan and shall not be applied during rainfall events; and d. The applicable SWPPP inspection requirements specified in Part II F 2 shall be amended as follows: (1) Inspections shall be conducted at a frequency of (i) at least once every four business days or (ii) at least once every five business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days, the inspection shall be conducted on the next business day; and (2) Representative inspections used by utility line installation, pipeline construction, or other similar linear construction activities shall inspect all outfalls discharging to exceptional waters. 6. There shall be no discharge of floating solids or visible foam in other than trace amounts. C. Commingled discharges. Discharges authorized by this general permit may be commingled with other sources of stormwater that are not required to be covered under a state permit, so long as the commingled discharge is in compliance with this general permit. Discharges authorized by a separate state or VPDES permit may be commingled with discharges authorized by this general permit so long as all such discharges comply with all applicable state and VPDES permit requirements. General Permit No.: VAR10 Page 3 of 23 D. Prohibition of nonstormwater discharges. Except as provided in Parts I A 2, I C, and I E, all discharges covered by this general permit shall be composed entirely of stormwater associated with construction activities. All other discharges including the following are prohibited: 1. Wastewater from washout of concrete; 2. Wastewater from the washout and cleanout of stucco, paint, form release oils, curing compounds, and other construction materials; 3. Fuels, oils, or other pollutants used in vehicle and equipment operation and maintenance; 4. Oils, toxic substances, or hazardous substances from spills or other releases; and 5. Soaps, solvents, or detergents used in equipment and vehicle washing. E. Authorized nonstormwater discharges. The following nonstormwater discharges from construction activities are authorized by this general permit when discharged in compliance with this general permit: 1. Discharges from firefighting activities; 2. Fire hydrant flushings; 3. Waters used to wash vehicles or equipment where soaps, solvents, or detergents have not been used and the wash water has been filtered, settled, or similarly treated prior to discharge; 4. Water used to control dust that has been filtered, settled, or similarly treated prior to discharge; 5. Potable water sources, including uncontaminated waterline flushings; 6. Routine external building wash down where soaps, solvents or detergents have not been used and the wash water has been filtered, settled, or similarly treated prior to discharge; 7. Pavement wash waters where spills or leaks of toxic or hazardous materials have not occurred (or where all spilled or leaked material has been removed prior to washing); where soaps, solvents, or detergents have not been used; and where the wash water has been filtered, settled, or similarly treated prior to discharge; 8. Uncontaminated air conditioning or compressor condensate; 9. Uncontaminated ground water or spring water; 10. Foundation or footing drains where flows are not contaminated with process materials such as solvents; 11. Uncontaminated excavation dewatering, including dewatering of trenches and excavations that have been filtered, settled, or similarly treated prior to discharge; and 12. Landscape irrigation. F. Termination of general permit coverage. 1. The operator of the construction activity shall submit a notice of termination in accordance with 9VAC25-880-60 to the VSMP authority after one or more of the following conditions have been met: General Permit No.: VAR10 Page 4 of 23 a. Necessary permanent control measures included in the SWPPP for the site are in place and functioning effectively and final stabilization has been achieved on all portions of the site for which the operator is responsible. When applicable, long term responsibility and maintenance requirements shall be recorded in the local land records prior to the submission of a notice of termination; b. Another operator has assumed control over all areas of the site that have not been finally stabilized and obtained coverage for the ongoing discharge; c. Coverage under an alternative VPDES or state permit has been obtained; or d. For residential construction only, temporary soil stabilization has been completed and the residence has been transferred to the homeowner. 2. The notice of termination should be submitted no later than 30 days after one of the above conditions in subdivision 1 of this subsection is met. Authorization to discharge terminates at midnight on the date that the notice of termination is submitted for the conditions set forth in subdivisions 1 b through 1 d of this subsection. Termination of authorizations to discharge for the conditions set forth in subdivision 1 a of this subsection shall be effective upon notification from the department that the provisions of subdivision 1 a of this subsection have been met or 60 days after submittal of the notice of termination, whichever occurs first. 3. The notice of termination shall be signed in accordance with Part III K of this general permit. G. Water quality protection. 1. The operator must select, install, implement and maintain control measures as identified in the SWPPP at the construction site that minimize pollutants in the discharge as necessary to ensure that the operator's discharge does not cause or contribute to an excursion above any applicable water quality standard. 2. If it is determined by the department that the operator's discharges are causing. have reasonable potential to cause, or are contributing to an excursion above any applicable water quality standard, the department, in consultation with the VSMP authority, may take appropriate enforcement action and require the operator to: a. Modify or implement additional control measures in accordance with Part II B to adequately address the identified water quality concerns; b. Submit valid and verifiable data and information that are representative of ambient conditions and indicate that the receiving water is attaining water quality standards; or c. Submit an individual permit application in accordance with 9VAC25-870-410 B 3. All written responses required under this chapter must include a signed certification consistent with Part III K. General Permit No.: VAR10 Page 5 of 23 PART II STORMWATER POLLUTION PREVENTION PLAN A stormwater pollution prevention plan (SWPPP) shall be developed prior to the submission of a registration statement and implemented for the construction activity, including any support activity, covered by this general permit. SWPPPs shall be prepared in accordance with good engineering practices. Construction activities that are part of a larger common plan of development or sale and disturb less than one acre may utilize a SWPPP template provided by the department and need not provide a separate stormwater management plan if one has been prepared and implemented for the larger common plan of development or sale. The SWPPP requirements of this general permit may be fulfilled by incorporating by reference other plans such as a spill prevention control and countermeasure (SPCC) plan developed for the site under § 311 of the federal Clean Water Act or best management practices (BMP) programs otherwise required for the facility provided that the incorporated plan meets or exceeds the SWPPP requirements of Part II A. All plans incorporated by reference into the SWPPP become enforceable under this general permit. If a plan incorporated by reference does not contain all of the required elements of the SWPPP, the operator must develop the missing elements and include them in the SWPPP. Any operator that was authorized to discharge under the general permit issued in 2009, and that intends to continue coverage under this general permit, shall update its stormwater pollution prevention plan to comply with the requirements of this general permit no later than 60 days after the date of coverage under this general permit. A. Stormwater pollution prevention plan contents. The SWPPP shall include the following items: 1. General information. a. A signed copy of the registration statement, if required, for coverage under the general VPDES permit for discharges of stormwater from construction activities; b. Upon receipt, a copy of the notice of coverage under the general VPDES permit for discharges of stormwater from construction activities (i.e., notice of coverage letter); c. Upon receipt, a copy of the general VPDES permit for discharges of stormwater from construction activities; d. A narrative description of the nature of the construction activity, including the function of the project (e.g., low density residential, shopping mall, highway, etc.); e. A legible site plan identifying: (1) Directions of stormwater flow and approximate slopes anticipated after major grading activities; (2) Limits of land disturbance including steep slopes and natural buffers around surface waters that will not be disturbed; (3) Locations of major structural and nonstructural control measures, including sediment basins and traps, perimeter dikes, sediment barriers, and other measures intended to filter, settle, or similarly treat sediment, that will be installed between disturbed areas and the undisturbed vegetated areas in order to increase sediment removal and maximize stormwater infiltration; (4) Locations of surface waters; General Permit No.: VAR10 Page 6 of 23 (5) Locations where concentrated stormwater is discharged; (6) Locations of support activities, when applicable and when required by the VSMP authority, including but not limited to (i) areas where equipment and vehicle washing, wheel wash water, and other wash water is to occur; (ii) storage areas for chemicals such as acids, fuels, fertilizers, and other lawn care chemicals; (iii) concrete wash out areas; (iv) vehicle fueling and maintenance areas; (v) sanitary waste facilities, including those temporarily placed on the construction site; and (vi) construction waste storage; and (7) When applicable, the location of the on-site rain gauge or the methodology established in consultation with the VSMP authority used to identify measurable storm events for inspection purposes. 2. Erosion and sediment control plan. a. An erosion and sediment control plan approved by the VESCP authority as authorized under the Erosion and Sediment Control Regulations (9VAC25-840), an "agreement in lieu of a plan" as defined in 9VAC25-840-10 from the VESCP authority, or an erosion and sediment control plan prepared in accordance with annual standards and specifications approved by the department. Any operator proposing a new stormwater discharge from construction activities that is not required to obtain erosion and sediment control plan approval from a VESCP authority or does not adopt department-approved annual standards and specifications shall submit the erosion and sediment control plan to the department for review and approval. b. All erosion and sediment control plans shall include a statement describing the maintenance responsibilities required for the erosion and sediment controls used. c. A properly implemented approved erosion and sediment control plan, "agreement in lieu of a plan," or erosion and sediment control plan prepared in accordance with department-approved annual standards and specifications, adequately: (1) Controls the volume and velocity of stormwater runoff within the site to minimize soil erosion; (2) Controls stormwater discharges, including peak flow rates and total stormwater volume, to minimize erosion at outlets and to minimize downstream channel and stream bank erosion; (3) Minimizes the amount of soil exposed during the construction activity; (4) Minimizes the disturbance of steep slopes; (5) Minimizes sediment discharges from the site in a manner that addresses (i) the amount, frequency, intensity, and duration of precipitation; (ii) the nature of resulting stormwater runoff; and (iii) soil characteristics, including the range of soil particle sizes present on the site; (6) Provides and maintains natural buffers around surface waters, directs stormwater to vegetated areas to increase sediment removal, and maximizes stormwater infiltration, unless infeasible; (7) Minimizes soil compaction and, unless infeasible, preserves topsoil; (8) Ensures that stabilization of disturbed areas will be initiated immediately whenever any clearing, grading, excavating, or other land-disturbing activities have permanently ceased on any portion of the site, or temporarily ceased on any portion of the site and will not resume for a period exceeding 14 days; and General Permit No.: VAR10 Page 7 of 23 (9) Utilizes outlet structures that withdraw stormwater from the surface (i.e., above the permanent pool or wet storage water surface elevation), unless infeasible, when discharging from sediment basins or sediment traps. 3. Stormwater management plan. a. New construction activities. A stormwater management plan approved by the VSMP authority as authorized under the Virginia Stormwater Management Program (VSMP) Regulation (9VAC25- 870), or an "agreement in lieu of a stormwater management plan" as defined in 9VAC25-870-10 from the VSMP authority, or a stormwater management plan prepared in accordance with annual standards and specifications approved by the department. Any operator proposing a new stormwater discharge from construction activities that is not required to obtain stormwater management plan approval from a VSMP authority or does not adopt department-approved annual standards and specifications shall submit the stormwater management plan to the department for review and approval. b. Existing construction activities. Any operator that was authorized to discharge under the general permit issued in 2009, and that intends to continue coverage under this general permit, shall ensure compliance with the requirements of 9VAC25-870-93 through 9VAC25-870-99 of the VSMP Regulation, including but not limited to the water quality and quantity requirements. The SWPPP shall include a description of, and all necessary calculations supporting, all post- construction stormwater management measures that will be installed prior to the completion of the construction process to control pollutants in stormwater discharges after construction operations have been completed. Structural measures should be placed on upland soils to the degree possible. Such measures must be designed and installed in accordance with applicable VESCP authority, VSMP authority, state, and federal requirements, and any necessary permits must be obtained. 4. Pollution prevention plan. A pollution prevention plan that addresses potential pollutant-generating activities that may reasonably be expected to affect the quality of stormwater discharges from the construction activity, including any support activity. The pollution prevention plan shall: a. Identify the potential pollutant-generating activities and the pollutant that is expected to be exposed to stormwater; b. Describe the location where the potential pollutant-generating activities will occur, or if identified on the site plan, reference the site plan; c. Identify all nonstormwater discharges, as authorized in Part I E of this general permit, that are or will be commingled with stormwater discharges from the construction activity, including any applicable support activity; d. Identify the person responsible for implementing the pollution prevention practice or practices for each pollutant-generating activity (if other than the person listed as the qualified personnel); e. Describe the pollution prevention practices and procedures that will be implemented to: (1) Prevent and respond to leaks, spills, and other releases including (i) procedures for expeditiously stopping, containing, and cleaning up spills, leaks, and other releases; and (ii) procedures for reporting leaks, spills, and other releases in accordance with Part III G; (2) Prevent the discharge of spilled and leaked fuels and chemicals from vehicle fueling and maintenance activities (e.g., providing secondary containment such as spill berms, decks, spill containment pallets, providing cover where appropriate, and having spill kits readily available); General Permit No.: VAR10 Page 8 of 23 (3) Prevent the discharge of soaps, solvents, detergents, and wash water from construction materials, including the clean-up of stucco, paint, form release oils, and curing compounds (e.g., providing (i) cover (e.g., plastic sheeting or temporary roofs) to prevent contact with stormwater; (ii) collection and proper disposal in a manner to prevent contact with stormwater; and (iii) a similarly effective means designed to prevent discharge of these pollutants); (4) Minimize the discharge of pollutants from vehicle and equipment washing, wheel wash water, and other types of washing (e.g., locating activities away from surface waters and stormwater inlets or conveyance and directing wash waters to sediment basins or traps, using filtration devices such as filter bags or sand filters, or using similarly effective controls); (5) Direct concrete wash water into a leak-proof container or leak-proof settling basin. The container or basin shall be designed so that no overflows can occur due to inadequate sizing or precipitation. Hardened concrete wastes shall be removed and disposed of in a manner consistent with the handling of other construction wastes. Liquid concrete wastes shall be removed and disposed of in a manner consistent with the handling of other construction wash waters and shall not be discharged to surface waters; (6) Minimize the discharge of pollutants from storage, handling, and disposal of construction products, materials, and wastes including (i) building products such as asphalt sealants, copper flashing, roofing materials, adhesives, and concrete admixtures; (ii) pesticides, herbicides, insecticides, fertilizers, and landscape materials; and (iii) construction and domestic wastes such as packaging materials, scrap construction materials, masonry products, timber, pipe and electrical cuttings, plastics, Styrofoam, concrete, and other trash or building materials; (7) Prevent the discharge of fuels, oils, and other petroleum products, hazardous or toxic wastes, and sanitary wastes; and (8) Address any other discharge from the potential pollutant-generating activities not addressed above; and f. Describe procedures for providing pollution prevention awareness of all applicable wastes, including any wash water, disposal practices, and applicable disposal locations of such wastes, to personnel in order to comply with the conditions of this general permit. The operator shall implement the procedures described in the SWPPP. 5. SWPPP requirements for discharges to impaired waters, surface waters with an applicable TMDL wasteload allocation established and approved prior to the term of this general permit, and exceptional waters. The SWPPP shall: a. Identify the impaired water(s), approved TMDL(s), pollutant(s) of concern, and exceptional waters identified in 9VAC25-260-30 A 3 c, when applicable; b. Provide clear direction that: (1) Permanent or temporary soil stabilization shall be applied to denuded areas within seven days after final grade is reached on any portion of the site; (2) Nutrients shall be applied in accordance with manufacturer's recommendations or an approved nutrient management plan and shall not be applied during rainfall events; and (3) A modified inspection schedule shall be implemented in accordance with Part I B 4 or Part I B 5. General Permit No.: VAR10 Page 9 of 23 6. Qualified personnel. The name, phone number, and qualifications of the qualified personnel conducting inspections required by this general permit. 7. Delegation of authority. The individuals or positions with delegated authority, in accordance with Part III K, to sign inspection reports or modify the SWPPP. 8. SWPPP signature. The SWPPP shall be signed and dated in accordance with Part III K. B. SWPPP amendments, modification, and updates. 1. The operator shall amend the SWPPP whenever there is a change in the design, construction, operation, or maintenance that has a significant effect on the discharge of pollutants to surface waters and that has not been previously addressed in the SWPPP. 2. The SWPPP must be amended if, during inspections or investigations by the operator's qualified personnel, or by local, state, or federal officials, it is determined that the existing control measures are ineffective in minimizing pollutants in discharges from the construction activity. Revisions to the SWPPP shall include additional or modified control measures designed and implemented to correct problems identified. If approval by the VESCP authority, VSMP authority, or department is necessary for the control measure, revisions to the SWPPP shall be completed no later than seven calendar days following approval. Implementation of these additional or modified control measures must be accomplished as described in Part II G. 3. The SWPPP must clearly identify the contractor(s) that will implement and maintain each control measure identified in the SWPPP. The SWPPP shall be amended to identify any new contractor that will implement and maintain a control measure. 4. The operator shall update the SWPPP no later than seven days following any modification to its implementation. All modifications or updates to the SWPPP shall be noted and shall include the following items: a. A record of dates when: (1) Major grading activities occur; (2) Construction activities temporarily or permanently cease on a portion of the site; and (3) Stabilization measures are initiated; b. Documentation of replaced or modified controls where periodic inspections or other information have indicated that the controls have been used inappropriately or incorrectly and where modified as soon as possible; c. Areas that have reached final stabilization and where no further SWPPP or inspection requirements apply; d. All properties that are no longer under the legal control of the operator and the dates on which the operator no longer had legal control over each property; e. The date of any prohibited discharges, the discharge volume released, and what actions were taken to minimize the impact of the release; f. Measures taken to prevent the reoccurrence of any prohibited discharge; and g Measures taken to address any evidence identified as a result of an inspection required under Part II F. General Permit No.: VAR10 Page 10 of 23 5. Amendments, modifications, or updates to the SWPPP shall be signed in accordance with Part III K. C. Public Notification. Upon commencement of land disturbance, the operator shall post conspicuously a copy of the notice of coverage letter near the main entrance of the construction activity. For linear projects, the operator shall post the notice of coverage letter at a publicly accessible location near an active part of the construction project (e.g., where a pipeline crosses a public road). The operator shall maintain the posted information until termination of general permit coverage as specified in Part I F. D. SWPPP availability. 1. Operators with day-to-day operational control over SWPPP implementation shall have a copy of the SWPPP available at a central location on-site for use by those identified as having responsibilities under the SWPPP whenever they are on the construction site. 2. The operator shall make the SWPPP and all amendments, modifications, and updates available upon request to the department, the VSMP authority, the EPA, the VESCP authority, local government officials, or the operator of a municipal separate storm sewer system receiving discharges from the construction activity. If an on-site location is unavailable to store the SWPPP when no personnel are present, notice of the SWPPP's location must be posted near the main entrance of the construction site. 3. The operator shall make the SWPPP available for public review in an electronic format or in hard copy. Information for public access to the SWPPP shall be posted and maintained in accordance with Part II C. If not provided electronically, public access to the SWPPP may be arranged upon request at a time and at a publicly accessible location convenient to the operator or his designee but shall be no less than once per month and shall be during normal business hours. Information not required to be contained within the SWPPP by this general permit is not required to be released. E. SWPPP implementation. The operator shall implement the SWPPP and subsequent amendments, modifications, and updates from commencement of land disturbance until termination of general permit coverage as specified in Part I F. 1. All control measures must be properly maintained in effective operating condition in accordance with good engineering practices and, where applicable, manufacturer specifications. If a site inspection required by Part II F identifies a control measure that is not operating effectively, corrective action(s) shall be completed as soon as practicable, but no later than seven days after discovery or a longer period as established by the VSMP authority, to maintain the continued effectiveness of the control measures. 2. If site inspections required by Part II F identify an existing control measure that needs to be modified or if an additional control measure is necessary for any reason, implementation shall be completed prior to the next anticipated measurable storm event. If implementation prior to the next anticipated measurable storm event is impracticable, then alternative control measures shall be implemented as soon as practicable, but no later than seven days after discovery or a longer period as established by the VSMP authority. F. SWPPP Inspections. 1. Personnel responsible for on-site and off-site inspections. Inspections required by this general permit shall be conducted by the qualified personnel identified by the operator in the SWPPP. The operator is responsible for insuring that the qualified personnel conduct the inspection. 2. Inspection schedule. a. Inspections shall be conducted at a frequency of: General Permit No.: VAR10 Page 11 of 23 (1) At least once every five business days; or (2) At least once every 10 business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days, the inspection shall be conducted no later than the next business day. b. Where areas have been temporarily stabilized or land-disturbing activities will be suspended due to continuous frozen ground conditions and stormwater discharges are unlikely, the inspection frequency may be reduced to once per month. If weather conditions (such as above freezing temperatures or rain or snow events) make discharges likely, the operator shall immediately resume the regular inspection frequency. c. Representative inspections may be utilized for utility line installation, pipeline construction, or other similar linear construction activities provided that: (1) Temporary or permanent soil stabilization has been installed and vehicle access may compromise the temporary or permanent soil stabilization and potentially cause additional land disturbance increasing the potential for erosion; (2) Inspections occur on the same frequency as other construction activities; (3) Control measures are inspected along the construction site 0.25 miles above and below each access point (i.e., where a roadway, undisturbed right-of-way, or other similar feature intersects the construction activity and access does not compromise temporary or permanent soil stabilization); and (4) Inspection locations are provided in the report required by Part II F. 3. Inspection requirements. a. As part of the inspection, the qualified personnel shall: (1) Record the date and time of the inspection and when applicable the date and rainfall amount of the last measurable storm event; (2) Record the information and a description of any discharges occurring at the time of the inspection; (3) Record any land-disturbing activities that have occurred outside of the approved erosion and sediment control plan; (4) Inspect the following for installation in accordance with the approved erosion and sediment control plan, identification of any maintenance needs, and evaluation of effectiveness in minimizing sediment discharge, including whether the control has been inappropriately or incorrectly used: (a) All perimeter erosion and sediment controls, such as silt fence; (b) Soil stockpiles, when applicable, and borrow areas for stabilization or sediment trapping measures; (c) Completed earthen structures, such as dams, dikes, ditches, and diversions for stabilization; General Permit No.: VAR10 Page 12 of 23 (d) Cut and fill slopes; (e) Sediment basins and traps, sediment barriers, and other measures installed to control sediment discharge from stormwater; (f) Temporary or permanent channel, flume, or other slope drain structures installed to convey concentrated runoff down cut and fill slopes; (g) Storm inlets that have been made operational to ensure that sediment laden stormwater does not enter without first being filtered or similarly treated; and (h) Construction vehicle access routes that intersect or access paved roads for minimizing sediment tracking; (5) Inspect areas that have reached final grade or that will remain dormant for more than 14 days for initiation of stabilization activities; (6) Inspect areas that have reached final grade or that will remain dormant for more than 14 days for completion of stabilization activities within seven days of reaching grade or stopping work; (7) Inspect for evidence that the approved erosion and sediment control plan, "agreement in lieu of a plan," or erosion and sediment control plan prepared in accordance with department- approved annual standards and specifications has not been properly implemented. This includes but is not limited to: (a) Concentrated flows of stormwater in conveyances such as rills, rivulets or channels that have not been filtered, settled, or similarly treated prior to discharge, or evidence thereof; (b) Sediment laden or turbid flows of stormwater that have not been filtered or settled to remove sediments prior to discharge; (c) Sediment deposition in areas that drain to unprotected stormwater inlets or catch basins that discharge to surface waters. Inlets and catch basins with failing sediments controls due to improper installation, lack of maintenance, or inadequate design are considered unprotected; (d) Sediment deposition on any property (including public and private streets) outside of the construction activity covered by this general permit; (e) Required stabilization has not been initiated or completed on portions of the site; (f) Sediment basins without adequate wet or dry storage volume or sediment basins that allow the discharge of stormwater from below the surface of the wet storage portion of the basin; (g) Sediment traps without adequate wet or dry storage or sediment traps that allow the discharge of stormwater from below the surface of the wet storage portion of the trap; and (h) Land disturbance outside of the approved area to be disturbed; (8) Inspect pollutant generating activities identified in the pollution prevention plan for the proper implementation, maintenance and effectiveness of the procedures and practices; (9) Identify any pollutant generating activities not identified in the pollution prevention plan; and General Permit No.: VAR10 Page 13 of 23 (10) Identify and document the presence of any evidence of the discharge of pollutants prohibited by this general permit. 4. Inspection report. Each inspection report shall include the following items: a. The date and time of the inspection and when applicable, the date and rainfall amount of the last measurable storm event; b. Summarized findings of the inspection; c. The location(s) of prohibited discharges; d. The location(s) of control measures that require maintenance; e. The location(s) of control measures that failed to operate as designed or proved inadequate or inappropriate for a particular location; f. The location(s) where any evidence identified under Part II F 3 a (7) exists; g. The location(s) where any additional control measure is needed that did not exist at the time of inspection; h. A list of corrective actions required (including any changes to the SWPPP that are necessary) as a result of the inspection or to maintain permit compliance; i. Documentation of any corrective actions required from a previous inspection that have not been implemented; and j. The date and signature of the qualified personnel and the operator or its duly authorized representative. The inspection report and any actions taken in accordance with Part II must be retained by the operator as part of the SWPPP for at least three years from the date that general permit coverage expires or is terminated. The inspection report shall identify any incidents of noncompliance. Where an inspection report does not identify any incidents of noncompliance, the report shall contain a certification that the construction activity is in compliance with the SWPPP and this general permit. The report shall be signed in accordance with Part Ill K of this general permit. G. Corrective actions. 1. The operator shall implement the corrective action(s) identified as a result of an inspection as soon as practicable but no later than seven days after discovery or a longer period as approved by the VSMP authority. If approval of a corrective action by a regulatory authority (e.g., VSMP authority, VESCP authority, or the department) is necessary, additional control measures shall be implemented to minimize pollutants in stormwater discharges until such approvals can be obtained. 2. The operator may be required to remove accumulated sediment deposits located outside of the construction activity covered by this general permit as soon as practicable in order to minimize environmental impacts. The operator shall notify the VSMP authority and the department as well as obtain all applicable federal, state, and local authorizations, approvals, and permits prior to the removal of sediments accumulated in surface waters including wetlands. General Permit No.: VAR10 Page 14 of 23 PART III CONDITIONS APPLICABLE TO ALL VPDES PERMITS NOTE: Discharge monitoring is not required for this general permit. If the operator chooses to monitor stormwater discharges or control measures, the operator must comply with the requirements of subsections A, B, and C, as appropriate. A. Monitoring. 1. Samples and measurements taken for the purpose of monitoring shall be representative of the monitoring activity. 2. Monitoring shall be conducted according to procedures approved under 40 CFR Part 136 or alternative methods approved by the U.S. Environmental Protection Agency, unless other procedures have been specified in this general permit. Analyses performed according to test procedures approved under 40 CFR Part 136 shall be performed by an environmental laboratory certified under regulations adopted by the Department of General Services (1 VAC30-45 or 1 VAC30-46). 3. The operator shall periodically calibrate and perform maintenance procedures on all monitoring and analytical instrumentation at intervals that will ensure accuracy of measurements. B. Records. 1. Monitoring records and reports shall include: a. The date, exact place, and time of sampling or measurements; b. The individual(s) who performed the sampling or measurements; c. The date(s) and time(s) analyses were performed; d. The individual(s) who performed the analyses; e. The analytical techniques or methods used; and f. The results of such analyses. 2. The operator shall retain records of all monitoring information, including all calibration and maintenance records and all original strip chart recordings for continuous monitoring instrumentation, copies of all reports required by this general permit, and records of all data used to complete the registration statement for this general permit, for a period of at least three years from the date of the sample, measurement, report or request for coverage. This period of retention shall be extended automatically during the course of any unresolved litigation regarding the regulated activity or regarding control standards applicable to the operator, or as requested by the board. C. Reporting monitoring results. 1. The operator shall update the SWPPP to include the results of the monitoring as may be performed in accordance with this general permit, unless another reporting schedule is specified elsewhere in this general permit. 2. Monitoring results shall be reported on a discharge monitoring report (DMR); on forms provided, approved or specified by the department; or in any format provided that the date, location, parameter, method, and result of the monitoring activity are included. General Permit No.: VAR10 Page 15 of 23 3. If the operator monitors any pollutant specifically addressed by this general permit more frequently than required by this general permit using test procedures approved under 40 CFR Part 136 or using other test procedures approved by the U.S. Environmental Protection Agency or using procedures specified in this general permit, the results of this monitoring shall be included in the calculation and reporting of the data submitted in the DMR or reporting form specified by the department. 4. Calculations for all limitations which require averaging of measurements shall utilize an arithmetic mean unless otherwise specified in this general permit. D. Duty to provide information. The operator shall furnish, within a reasonable time, any information which the board may request to determine whether cause exists for modifying, revoking and reissuing, or terminating this general permit or to determine compliance with this general permit. The board, department, EPA, or VSMP authority may require the operator to furnish, upon request, such plans, specifications, and other pertinent information as may be necessary to determine the effect of the wastes from his discharge on the quality of surface waters, or such other information as may be necessary to accomplish the purposes of the CWA and the Virginia Stormwater Management Act. The operator shall also furnish to the board, department, EPA, or VSMP authority, upon request, copies of records required to be kept by this general permit. E. Compliance schedule reports. Reports of compliance or noncompliance with, or any progress reports on, interim and final requirements contained in any compliance schedule of this general permit shall be submitted no later than 14 days following each schedule date. F. Unauthorized stormwater discharges. Pursuant to § 62.1-44.5 of the Code of Virginia, except in compliance with a state permit issued by the department, it shall be unlawful to cause a stormwater discharge from a construction activity. G. Reports of unauthorized discharges. Any operator who discharges or causes or allows a discharge of sewage, industrial waste, other wastes or any noxious or deleterious substance or a hazardous substance or oil in an amount equal to or in excess of a reportable quantity established under either 40 CFR Part 110, 40 CFR Part 117, 40 CFR Part 302, or § 62.1-44.34:19 of the Code of Virginia that occurs during a 24-hour period into or upon surface waters or who discharges or causes or allows a discharge that may reasonably be expected to enter surface waters, shall notify the Department of Environmental Quality of the discharge immediately upon discovery of the discharge, but in no case later than within 24 hours after said discovery. A written report of the unauthorized discharge shall be submitted to the department and the VSMP authority within five days of discovery of the discharge. The written report shall contain: 1. A description of the nature and location of the discharge; 2. The cause of the discharge; 3. The date on which the discharge occurred; 4. The length of time that the discharge continued; 5. The volume of the discharge; 6. If the discharge is continuing, how long it is expected to continue; 7. If the discharge is continuing, what the expected total volume of the discharge will be; and 8. Any steps planned or taken to reduce, eliminate and prevent a recurrence of the present discharge or any future discharges not authorized by this general permit. General Permit No.: VAR10 Page 16 of 23 Discharges reportable to the department and the VSMP authority under the immediate reporting requirements of other regulations are exempted from this requirement. H. Reports of unusual or extraordinary discharges. If any unusual or extraordinary discharge including a "bypass" or "upset," as defined herein, should occur from a facility and the discharge enters or could be expected to enter surface waters, the operator shall promptly notify, in no case later than within 24 hours, the department and the VSMP authority by telephone after the discovery of the discharge. This notification shall provide all available details of the incident, including any adverse effects on aquatic life and the known number of fish killed. The operator shall reduce the report to writing and shall submit it to the department and the VSMP authority within five days of discovery of the discharge in accordance with Part III 12. Unusual and extraordinary discharges include but are not limited to any discharge resulting from: 1. Unusual spillage of materials resulting directly or indirectly from processing operations; 2. Breakdown of processing or accessory equipment; 3. Failure or taking out of service of some or all of the facilities; and 4. Flooding or other acts of nature. I. Reports of noncompliance. The operator shall report any noncompliance which may adversely affect surface waters or may endanger public health. 1. An oral report to the department and the VSMP authority shall be provided within 24 hours from the time the operator becomes aware of the circumstances. The following shall be included as information that shall be reported within 24 hours under this subdivision: a. Any unanticipated bypass; and b. Any upset that causes a discharge to surface waters. 2. A written report shall be submitted within five days and shall contain: a. A description of the noncompliance and its cause: b. The period of noncompliance, including exact dates and times, and if the noncompliance has not been corrected, the anticipated time it is expected to continue; and c. Steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance. The department may waive the written report on a case-by-case basis for reports of noncompliance under Part III I if the oral report has been received within 24 hours and no adverse impact on surface waters has been reported. 3. The operator shall report all instances of noncompliance not reported under Part III 11 or 2 in writing as part of the SWPPP. The reports shall contain the information listed in Part III 12. NOTE: The reports required in Part III G, H and I shall be made to the department and the VSMP authority. Reports may be made by telephone, email, or by fax. For reports outside normal working hours, leaving a recorded message shall fulfill the immediate reporting requirement. For emergencies. the Virginia Department of Emergency Management maintains a 24-hour telephone service at 1-800-468- 8892. General Permit No: VAR10 Page 17 of 23 4. Where the operator becomes aware of a failure to submit any relevant facts, or submittal of incorrect information in any report, including a registration statement, to the department or the VSMP authority, the operator shall promptly submit such facts or correct information. J. Notice of planned changes. 1. The operator shall give notice to the department and the VSMP authority as soon as possible of any planned physical alterations or additions to the permitted facility or activity. Notice is required only when: a. The operator plans an alteration or addition to any building, structure, facility, or installation that may meet one of the criteria for determining whether a facility is a new source in 9VAC25-870- 420; b. The operator plans an alteration or addition that would significantly change the nature or increase the quantity of pollutants discharged. This notification applies to pollutants that are not subject to effluent limitations in this general permit; or 2. The operator shall give advance notice to the department and VSMP authority of any planned changes in the permitted facility or activity, which may result in noncompliance with state permit requirements. K. Signatory requirements. 1. Registration statement. All registration statements shall be signed as follows: a. For a corporation: by a responsible corporate officer. For the purpose of this chapter, a responsible corporate officer means: (i) a president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy-making or decision-making functions for the corporation; or (ii) the manager of one or more manufacturing, production, or operating facilities, provided the manager is authorized to make management decisions that govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long-term compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for state permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures; b. For a partnership or sole proprietorship: by a general partner or the proprietor, respectively; or c. For a municipality, state, federal, or other public agency: by either a principal executive officer or ranking elected official. For purposes of this chapter, a principal executive officer of a public agency includes: (i) the chief executive officer of the agency or (ii) a senior executive officer having responsibility for the overall operations of a principal geographic unit of the agency. 2. Reports, etc. All reports required by this general permit, including SWPPPs, and other information requested by the board or the department shall be signed by a person described in Part Ill K 1 or by a duly authorized representative of that person. A person is a duly authorized representative only if: a. The authorization is made in writing by a person described in Part Ill K 1; b. The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity such as the position of plant manager, operator of a well or a well field, superintendent, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the operator. (A duly authorized General Permit No.: VAR10 Page 18 of 23 representative may thus be either a named individual or any individual occupying a named position); and c. The signed and dated written authorization is included in the SWPPP. A copy must be provided to the department and VSMP authority, if requested. 3. Changes to authorization. If an authorization under Part III K 2 is no longer accurate because a different individual or position has responsibility for the overall operation of the construction activity, a new authorization satisfying the requirements of Part III K 2 shall be submitted to the VSMP authority as the administering entity for the board prior to or together with any reports or information to be signed by an authorized representative. 4. Certification. Any person signing a document under Part III K 1 or 2 shall make the following certification: "I certify under penalty of law that I have read and understand this document and that this document and all attachments were prepared in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations." L. Duty to comply. The operator shall comply with all conditions of this general permit. Any state permit noncompliance constitutes a violation of the Virginia Stormwater Management Act and the Clean Water Act, except that noncompliance with certain provisions of this general permit may constitute a violation of the Virginia Stormwater Management Act but not the Clean Water Act. Permit noncompliance is grounds for enforcement action; for state permit termination, revocation and reissuance, or modification; or denial of a state permit renewal application. The operator shall comply with effluent standards or prohibitions established under § 307(a) of the Clean Water Act for toxic pollutants within the time provided in the regulations that establish these standards or prohibitions or standards for sewage sludge use or disposal, even if this general permit has not yet been modified to incorporate the requirement. M. Duty to reapply. If the operator wishes to continue an activity regulated by this general permit after the expiration date of this general permit, the operator shall submit a new registration statement at least 90 days before the expiration date of the existing general permit, unless permission for a later date has been granted by the board. The board shall not grant permission for registration statements to be submitted later than the expiration date of the existing general permit. N. Effect of a state permit. This general permit does not convey any property rights in either real or personal property or any exclusive privileges, nor does it authorize any injury to private property or invasion of personal rights, or any infringement of federal, state or local law or regulations. O. State law. Nothing in this general permit shall be construed to preclude the institution of any legal action under, or relieve the operator from any responsibilities, liabilities, or penalties established pursuant to any other state law or regulation or under authority preserved by § 510 of the Clean Water Act. Except as provided in general permit conditions on "bypassing" (Part III U) and "upset" (Part III V), nothing in this general permit shall be construed to relieve the operator from civil and criminal penalties for noncompliance. P. Oil and hazardous substance liability. Nothing in this general permit shall be construed to preclude the institution of any legal action or relieve the operator from any responsibilities, liabilities, or penalties to which the operator is or may be subject under§§ 62.1-44.34:14 through 62.1-44.34:23 of the State Water Control Law or§ 311 of the Clean Water Act. General Permit No.: VAR10 Page 19 of 23 Q. Proper operation and maintenance. The operator shall at all times properly operate and maintain all facilities and systems of treatment and control (and related appurtenances), which are installed or used by the operator to achieve compliance with the conditions of this general permit. Proper operation and maintenance also includes effective plant performance, adequate funding, adequate staffing, and adequate laboratory and process controls, including appropriate quality assurance procedures. This provision requires the operation of back-up or auxiliary facilities or similar systems, which are installed by the operator only when the operation is necessary to achieve compliance with the conditions of this general permit. R. Disposal of solids or sludges. Solids, sludges or other pollutants removed in the course of treatment or management of pollutants shall be disposed of in a manner so as to prevent any pollutant from such materials from entering surface waters and in compliance with all applicable state and federal laws and regulations. S. Duty to mitigate. The operator shall take all steps to minimize or prevent any discharge in violation of this general permit that has a reasonable likelihood of adversely affecting human health or the environment. T. Need to halt or reduce activity not a defense. It shall not be a defense for an operator in an enforcement action that it would have been necessary to halt or reduce the permitted activity in order to maintain compliance with the conditions of this general permit. U. Bypass. 1. "Bypass," as defined in 9VAC25-870-10, means the intentional diversion of waste streams from any portion of a treatment facility. The operator may allow any bypass to occur that does not cause effluent limitations to be exceeded, but only if it also is for essential maintenance to ensure efficient operation. These bypasses are not subject to the provisions of Part III U 2 and 3. 2. Notice. a. Anticipated bypass. If the operator knows in advance of the need for a bypass, the operator shall submit prior notice to the department, if possible at least 10 days before the date of the bypass. b. Unanticipated bypass. The operator shall submit notice of an unanticipated bypass as required in Part III I. 3. Prohibition of bypass. a. Except as provided in Part III U 1, bypass is prohibited, and the board or department may take enforcement action against an operator for bypass unless: (1) Bypass was unavoidable to prevent loss of life, personal injury, or severe property damage. Severe property damage means substantial physical damage to property, damage to the treatment facilities that causes them to become inoperable, or substantial and permanent loss of natural resources that can reasonably be expected to occur in the absence of a bypass. Severe property damage does not mean economic loss caused by delays in production; (2) There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities, retention of untreated wastes, or maintenance during normal periods of equipment downtime. This condition is not satisfied if adequate back-up equipment should have been installed in the exercise of reasonable engineering judgment to prevent a bypass that occurred during normal periods of equipment downtime or preventive maintenance; and (3) The operator submitted notices as required under Part III U 2. General Permit No.: VAR10 Page 20 of 23 b. The department may approve an anticipated bypass, after considering its adverse effects, if the department determines that it will meet the three conditions listed in Part III U 3 a. V. Upset. 1. An "upset," as defined in 9VAC25-870-10, means an exceptional incident in which there is unintentional and temporary noncompliance with technology-based state permit effluent limitations because of factors beyond the reasonable control of the operator. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance, or careless or improper operation. 2. An upset constitutes an affirmative defense to an action brought for noncompliance with technology- based state permit effluent limitations if the requirements of Part III V 4 are met. A determination made during administrative review of claims that noncompliance was caused by upset, and before an action for noncompliance, is not a final administrative action subject to judicial review. 3. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventative maintenance, or careless or improper operation. 4. An operator who wishes to establish the affirmative defense of upset shall demonstrate, through properly signed, contemporaneous operating logs or other relevant evidence that: a. An upset occurred and that the operator can identify the cause(s) of the upset; b. The permitted facility was at the time being properly operated; c. The operator submitted notice of the upset as required in Part III I; and d. The operator complied with any remedial measures required under Part III S. 5. In any enforcement proceeding, the operator seeking to establish the occurrence of an upset has the burden of proof. W. Inspection and entry. The operator shall allow the department as the board's designee, the VSMP authority, EPA, or an authorized representative of either entity (including an authorized contractor), upon presentation of credentials and other documents as may be required by law to: 1. Enter upon the operator's premises where a regulated facility or activity is located or conducted, or where records must be kept under the conditions of this general permit; 2. Have access to and copy, at reasonable times, any records that must be kept under the conditions of this general permit; 3. Inspect and photograph at reasonable times any facilities, equipment (including monitoring and control equipment), practices, or operations regulated or required under this general permit; and 4. Sample or monitor at reasonable times, for the purposes of ensuring state permit compliance or as otherwise authorized by the Clean Water Act or the Virginia Stormwater Management Act, any substances or parameters at any location. For purposes of this section, the time for inspection shall be deemed reasonable during regular business hours, and whenever the facility is discharging. Nothing contained herein shall make an inspection unreasonable during an emergency. General Permit No.: VAR10 Page 21 of 23 X. State permit actions. State permits may be modified, revoked and reissued, or terminated for cause. The filing of a request by the operator for a state permit modification, revocation and reissuance, or termination, or a notification of planned changes or anticipated noncompliance does not stay any state permit condition. Y. Transfer of state permits. 1. State permits are not transferable to any person except after notice to the department. Except as provided in Part III Y 2, a state permit may be transferred by the operator to a new operator only if the state permit has been modified or revoked and reissued, or a minor modification made, to identify the new operator and incorporate such other requirements as may be necessary under the Virginia Stormwater Management Act and the Clean Water Act. 2. As an alternative to transfers under Part III Y 1, this state permit may be automatically transferred to a new operator if: a. The current operator notifies the department at least 30 days in advance of the proposed transfer of the title to the facility or property; b. The notice includes a written agreement between the existing and new operators containing a specific date for transfer of state permit responsibility, coverage, and liability between them; and c. The department does not notify the existing operator and the proposed new operator of its intent to modify or revoke and reissue the state permit. If this notice is not received, the transfer is effective on the date specified in the agreement mentioned in Part III Y 2 b. 3. For ongoing construction activity involving a change of operator, the new operator shall accept and maintain the existing SWPPP, or prepare and implement a new SWPPP prior to taking over operations at the site. Z. Severability. The provisions of this general permit are severable, and if any provision of this general permit or the application of any provision of this state permit to any circumstance, is held invalid, the application of such provision to other circumstances and the remainder of this general permit shall not be affected thereby. General Permit No.: VAR10 Page 22 of 23 DEFINITIONS "Business day" means Monday through Friday excluding state holidays. "Commencement of land disturbance" means the initial disturbance of soils associated with clearing, grading, or excavating activities or other construction activities (e.g., stockpiling of fill material). "Construction site" means the land where any land-disturbing activity is physically located or conducted, including any adjacent land used or preserved in connection with the land-disturbing activity. "Final stabilization" means that one of the following situations has occurred: 1. All soil disturbing activities at the site have been completed and a permanent vegetative cover has been established on denuded areas not otherwise permanently stabilized. Permanent vegetation shall not be considered established until a ground cover is achieved that is uniform (e.g., evenly distributed), mature enough to survive, and will inhibit erosion. 2. For individual lots in residential construction, final stabilization can occur by either: a. The homebuilder completing final stabilization as specified in subdivision 1 of this definition; or b. The homebuilder establishing temporary soil stabilization, including perimeter controls for an individual lot prior to occupation of the home by the homeowner, and informing the homeowner of the need for, and benefits of, final stabilization. 3. For construction projects on land used for agricultural purposes, final stabilization may be accomplished by returning the disturbed land to its preconstruction agricultural use. Areas disturbed that were not previously used for agricultural activities, such as buffer strips immediately adjacent to surface waters, and areas that are not being returned to their preconstruction agricultural use must meet the final stabilization criteria specified in subdivision 1 or 2 of this definition. "Immediately" means as soon as practicable, but no later than the end of the next business day, following the day when the land-disturbing activities have temporarily or permanently ceased. In the context of this general permit, "immediately" is used to define the deadline for initiating stabilization measures. "Impaired waters" means surface waters identified as impaired on the 2012 § 305(b)/303(d)Water Quality Assessment Integrated Report. "Infeasible" means not technologically possible or not economically practicable and achievable in light of best industry practices. "Initiation of stabilization activities" means: 1. Prepping the soil for vegetative or nonvegetative stabilization; 2. Applying mulch or other nonvegetative product to the exposed area; 3. Seeding or planting the exposed area; 4. Starting any of the above activities on a portion of the area to be stabilized, but not on the entire area; or 5. Finalizing arrangements to have the stabilization product fully installed in compliance with the applicable deadline for completing stabilization. This list is not exhaustive. General Permit No.: VAR10 Page 23 of 23 "Measurable storm event" means a rainfall event producing 0.25 inches of rain or greater over 24 hours. "Stabilized" means land that has been treated to withstand normal exposure to natural forces without incurring erosion damage. Section 12. Inspection logs Issued— 10/2014 Stormwater Pollution Prevention Plan(SWPPP) Albemarle County Pantops Corner SWPPP Grading Log Inspection: Date Time Instructions: Fill out this sheet as grading events occur. Record grading events and their respective locations on this log. Summary: Event on record: Location(s) on Site: • Major Grading Activities: • Construction Activities Cease: o Temporarily: o Permanently: • Stabilization Measures Initiated: • Other Grading Activity Notes: Inspector Signature Date Operator Signature Date Pantops Corner SWPPP Grading Log Inspection: Date Time Instructions: Fill out this sheet as grading events occur. Record grading events and their respective locations on this log. Summary: Event on record: Location(s) on Site: • Major Grading Activities: • Construction Activities Cease: o Temporarily: o Permanently: • Stabilization Measures Initiated: • Other Grading Activity Notes: Inspector Signature Date Operator Signature Date Pantops Corner SWPPP Grading Log Inspection: Date Time Instructions: Fill out this sheet as grading events occur. Record grading events and their respective locations on this log. Summary: Event on record: Location(s) on Site: • Major Grading Activities: • Construction Activities Cease: o Temporarily: o Permanently: • Stabilization Measures Initiated: • Other Grading Activity Notes: Inspector Signature Date Operator Signature Date Pantops Corner SWPPP Grading Log Inspection: Date Time Instructions: Fill out this sheet as grading events occur. Record grading events and their respective locations on this log. Summary: Event on record: Location(s) on Site: • Major Grading Activities: • Construction Activities Cease: o Temporarily: o Permanently: • Stabilization Measures Initiated: • Other Grading Activity Notes: Inspector Signature Date Operator Signature Date Pantops Corner SWPPP Grading Log Inspection: Date Time Instructions: Fill out this sheet as grading events occur. Record grading events and their respective locations on this log. Summary: Event on record: Location(s)on Site: • Major Grading Activities: • Construction Activities Cease: o Temporarily: o Permanently: • Stabilization Measures Initiated: • Other Grading Activity Notes: Inspector Signature Date Operator Signature Date Pantops Corner SWPPP Grading Log Inspection: Date Time Instructions: Fill out this sheet as grading events occur. Record grading events and their respective locations on this log. Summary: Event on record: Location(s) on Site: • Major Grading Activities: • Construction Activities Cease: o Temporarily: o Permanently: • Stabilization Measures Initiated: • Other Grading Activity Notes: Inspector Signature Date Operator Signature Date Pantops Corner SWPPP Grading Log Inspection: Date Time Instructions: Fill out this sheet as grading events occur. Record grading events and their respective locations on this log. Summary: Event on record: Location(s) on Site: • Major Grading Activities: • Construction Activities Cease: o Temporarily: o Permanently: • Stabilization Measures Initiated: • Other Grading Activity Notes: Inspector Signature Date Operator Signature Date Pantops Corner SWPPP Grading Log Inspection: Date Time Instructions: Fill out this sheet as grading events occur. Record grading events and their respective locations on this log. Summary: Event on record: Location(s) on Site: • Major Grading Activities: • Construction Activities Cease: o Temporarily: o Permanently: • Stabilization Measures Initiated: • Other Grading Activity Notes: Inspector Signature Date Operator Signature Date Pantops Corner SWPPP Inspection Log Inspection: Last Rainfall: Date Time Date Rainfall Amount Summary(requirements on back of sheet): Locations of: • Prohibited discharges • Controls needing maintenance • Failed controls: • Evidence that ESCP has not been properly implemented: • Additional measures needed: Corrective actions required: Unimplemented corrective actions from previous inspection: Inspector Signature Date Operator Signature Date "If this report does not identify any incidents of non-compliance, I certify that the construction activity is in compliance with the SWPPP and Construction General Permit." Inspections shall be completed at least once every 5 business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days,the inspection shall be conducted on the next business day. Representative inspections used by utility line installation, pipeline construction, or other similar linear construction activities shall inspect all outfalls discharging to exceptional waters.Where an inspection report does not identify any incidents of non-compliance,the report shall contain a certification that the construction activity is in compliance with the SWPPP and general permit. Inspection requirements: Describe discharges at time of inspection Record land-disturbing activities outside approved ESCP Inspect proper installation, maintenance needs, and effectiveness of: — Perimeter controls, such as silt fence — Soil stockpiles and borrow areas - Completed earthen structures (dams, dikes, ditches, diversions, etc.) - Cut and fill slopes — Sediment basins and traps, sediment barriers, etc. - Channels, flumes, slope drains, etc. — Operational storm inlets - Construction vehicle access routes Areas at final grade or to remain dormant for more than 14 days: — Initiate stabilization activities — Complete stabilization activities within 7 days of stopping work Evidence that ESCP has not been properly implemented: — Concentrated flows of stormwater in conveyances such as rills,rivulets or channels that have not been filtered, settled, or similarly treated prior to discharge, or evidence thereof; - Sediment laden or turbid flows of stormwater that have not been filtered or settled to remove sediments prior to discharge; — Sediment deposition in areas that drain to unprotected stormwater inlets or catch basins that discharge to surface waters. Inlets and catch basins with failing sediments controls due to improper installation, lack of maintenance, or inadequate design are considered unprotected; — Sediment deposition on any property(including public and private streets)outside of the construction activity covered by this general permit; — Required stabilization has not been initiated or completed on portions of the site; — Sediment basins without adequate wet or dry storage volume or sediment basins that allow the discharge of stormwater from below the surface of the wet storage portion of the basin; — Sediment traps without adequate wet or dry storage or sediment traps that allow the discharge of stormwater from below the surface of the wet storage portion of the trap; and — Land disturbance outside of the approved area to be disturbed Pollutant generating activities from PPP: implementation, maintenance, and effectiveness Pollutant generating activities not identified in PPP Pantops Corner SWPPP Inspection Log Inspection: Last Rainfall: Date Time Date Rainfall Amount Summary(requirements on back of sheet): Locations of: • Prohibited discharges • Controls needing maintenance • Failed controls: • Evidence that ESCP has not been properly implemented: • Additional measures needed: Corrective actions required: Unimplemented corrective actions from previous inspection: Inspector Signature Date Operator Signature Date "If this report does not identify any incidents of non-compliance, I certify that the construction activity is in compliance with the SWPPP and Construction General Permit." Inspections shall be completed at least once every 5 business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days,the inspection shall be conducted on the next business day. Representative inspections used by utility line installation, pipeline construction,or other similar linear construction activities shall inspect all outfalls discharging to exceptional waters. Where an inspection report does not identify any incidents of non-compliance,the report shall contain a certification that the construction activity is in compliance with the SWPPP and general permit. Inspection requirements: Describe discharges at time of inspection Record land-disturbing activities outside approved ESCP Inspect proper installation, maintenance needs, and effectiveness of: — Perimeter controls, such as silt fence - Soil stockpiles and borrow areas — Completed earthen structures (dams, dikes, ditches, diversions, etc.) — Cut and fill slopes — Sediment basins and traps, sediment barriers, etc. - Channels, flumes, slope drains, etc. - Operational storm inlets - Construction vehicle access routes Areas at final grade or to remain dormant for more than 14 days: — Initiate stabilization activities — Complete stabilization activities within 7 days of stopping work Evidence that ESCP has not been properly implemented: - Concentrated flows of stormwater in conveyances such as rills, rivulets or channels that have not been filtered, settled,or similarly treated prior to discharge,or evidence thereof; — Sediment laden or turbid flows of stormwater that have not been filtered or settled to remove sediments prior to discharge; — Sediment deposition in areas that drain to unprotected stormwater inlets or catch basins that discharge to surface waters. Inlets and catch basins with failing sediments controls due to improper installation, lack of maintenance, or inadequate design are considered unprotected; — Sediment deposition on any property(including public and private streets)outside of the construction activity covered by this general permit; — Required stabilization has not been initiated or completed on portions of the site; — Sediment basins without adequate wet or dry storage volume or sediment basins that allow the discharge of stormwater from below the surface of the wet storage portion of the basin; — Sediment traps without adequate wet or dry storage or sediment traps that allow the discharge of stormwater from below the surface of the wet storage portion of the trap; and — Land disturbance outside of the approved area to be disturbed Pollutant generating activities from PPP: implementation, maintenance, and effectiveness Pollutant generating activities not identified in PPP Pantops Corner SWPPP Inspection Log Inspection: Last Rainfall: Date Time Date Rainfall Amount Summary(requirements on back of sheet): Locations of: • Prohibited discharges • Controls needing maintenance • Failed controls: • Evidence that ESCP has not been properly implemented: • Additional measures needed: Corrective actions required: Unimplemented corrective actions from previous inspection: Inspector Signature Date Operator Signature Date "If this report does not identify any incidents of non-compliance, I certify that the construction activity is in compliance with the SWPPP and Construction General Permit." Inspections shall be completed at least once every 5 business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days,the inspection shall be conducted on the next business day. Representative inspections used by utility line installation, pipeline construction, or other similar linear construction activities shall inspect all outfalls discharging to exceptional waters.Where an inspection report does not identify any incidents of non-compliance,the report shall contain a certification that the construction activity is in compliance with the SWPPP and general permit. Inspection requirements: Describe discharges at time of inspection Record land-disturbing activities outside approved ESCP Inspect proper installation, maintenance needs, and effectiveness of: - Perimeter controls, such as silt fence - Soil stockpiles and borrow areas - Completed earthen structures (dams, dikes, ditches, diversions, etc.) - Cut and fill slopes — Sediment basins and traps, sediment barriers, etc. - Channels, flumes, slope drains, etc. — Operational storm inlets - Construction vehicle access routes Areas at final grade or to remain dormant for more than 14 days: - Initiate stabilization activities - Complete stabilization activities within 7 days of stopping work Evidence that ESCP has not been properly implemented: - Concentrated flows of stormwater in conveyances such as rills,rivulets or channels that have not been filtered, settled, or similarly treated prior to discharge, or evidence thereof; — Sediment laden or turbid flows of stormwater that have not been filtered or settled to remove sediments prior to discharge; - Sediment deposition in areas that drain to unprotected stormwater inlets or catch basins that discharge to surface waters. Inlets and catch basins with failing sediments controls due to improper installation, lack of maintenance, or inadequate design are considered unprotected; — Sediment deposition on any property(including public and private streets)outside of the construction activity covered by this general permit; — Required stabilization has not been initiated or completed on portions of the site; - Sediment basins without adequate wet or dry storage volume or sediment basins that allow the discharge of stormwater from below the surface of the wet storage portion of the basin; — Sediment traps without adequate wet or dry storage or sediment traps that allow the discharge of stormwater from below the surface of the wet storage portion of the trap; and — Land disturbance outside of the approved area to be disturbed Pollutant generating activities from PPP: implementation, maintenance, and effectiveness Pollutant generating activities not identified in PPP Pantops Corner SWPPP Inspection Log Inspection: Last Rainfall: Date Time Date Rainfall Amount Summary(requirements on back of sheet): Locations of: • Prohibited discharges • Controls needing maintenance • Failed controls: • Evidence that ESCP has not been properly implemented: • Additional measures needed: Corrective actions required: Unimplemented corrective actions from previous inspection: Inspector Signature Date Operator Signature Date "If this report does not identify any incidents of non-compliance, I certify that the construction activity is in compliance with the SWPPP and Construction General Permit." Inspections shall be completed at least once every 5 business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days,the inspection shall be conducted on the next business day. Representative inspections used by utility line installation, pipeline construction,or other similar linear construction activities shall inspect all outfalls discharging to exceptional waters.Where an inspection report does not identify any incidents of non-compliance,the report shall contain a certification that the construction activity is in compliance with the SWPPP and general permit. Inspection requirements: Describe discharges at time of inspection Record land-disturbing activities outside approved ESCP Inspect proper installation, maintenance needs, and effectiveness of: - Perimeter controls, such as silt fence - Soil stockpiles and borrow areas - Completed earthen structures (dams, dikes, ditches, diversions, etc.) - Cut and fill slopes - Sediment basins and traps, sediment barriers, etc. — Channels, flumes, slope drains, etc. - Operational storm inlets — Construction vehicle access routes Areas at final grade or to remain dormant for more than 14 days: — Initiate stabilization activities - Complete stabilization activities within 7 days of stopping work Evidence that ESCP has not been properly implemented: - Concentrated flows of stormwater in conveyances such as rills,rivulets or channels that have not been filtered, settled, or similarly treated prior to discharge, or evidence thereof; — Sediment laden or turbid flows of stormwater that have not been filtered or settled to remove sediments prior to discharge; — Sediment deposition in areas that drain to unprotected stormwater inlets or catch basins that discharge to surface waters. Inlets and catch basins with failing sediments controls due to improper installation, lack of maintenance,or inadequate design are considered unprotected; — Sediment deposition on any property(including public and private streets)outside of the construction activity covered by this general permit; — Required stabilization has not been initiated or completed on portions of the site; - Sediment basins without adequate wet or dry storage volume or sediment basins that allow the discharge of stormwater from below the surface of the wet storage portion of the basin; — Sediment traps without adequate wet or dry storage or sediment traps that allow the discharge of stormwater from below the surface of the wet storage portion of the trap; and — Land disturbance outside of the approved area to be disturbed Pollutant generating activities from PPP: implementation, maintenance, and effectiveness Pollutant generating activities not identified in PPP Pantops Corner SWPPP Inspection Log Inspection: Last Rainfall: Date Time Date Rainfall Amount Summary(requirements on back of sheet): Locations of: • Prohibited discharges • Controls needing maintenance • Failed controls: • Evidence that ESCP has not been properly implemented: • Additional measures needed: Corrective actions required: Unimplemented corrective actions from previous inspection: Inspector Signature Date Operator Signature Date "If this report does not identify any incidents of non-compliance, I certify that the construction activity is in compliance with the SWPPP and Construction General Permit." Inspections shall be completed at least once every 5 business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days,the inspection shall be conducted on the next business day. Representative inspections used by utility line installation, pipeline construction,or other similar linear construction activities shall inspect all outfalls discharging to exceptional waters.Where an inspection report does not identify any incidents of non-compliance,the report shall contain a certification that the construction activity is in compliance with the SWPPP and general permit. Inspection requirements: Describe discharges at time of inspection Record land-disturbing activities outside approved ESCP Inspect proper installation, maintenance needs, and effectiveness of: — Perimeter controls, such as silt fence - Soil stockpiles and borrow areas — Completed earthen structures(dams, dikes, ditches, diversions, etc.) — Cut and fill slopes - Sediment basins and traps, sediment barriers, etc. - Channels,flumes, slope drains, etc. - Operational storm inlets — Construction vehicle access routes Areas at final grade or to remain dormant for more than 14 days: — Initiate stabilization activities - Complete stabilization activities within 7 days of stopping work Evidence that ESCP has not been properly implemented: — Concentrated flows of stormwater in conveyances such as rills,rivulets or channels that have not been filtered, settled, or similarly treated prior to discharge,or evidence thereof; — Sediment laden or turbid flows of stormwater that have not been filtered or settled to remove sediments prior to discharge; - Sediment deposition in areas that drain to unprotected stormwater inlets or catch basins that discharge to surface waters. Inlets and catch basins with failing sediments controls due to improper installation, lack of maintenance, or inadequate design are considered unprotected; — Sediment deposition on any property(including public and private streets)outside of the construction activity covered by this general permit; — Required stabilization has not been initiated or completed on portions of the site; — Sediment basins without adequate wet or dry storage volume or sediment basins that allow the discharge of stormwater from below the surface of the wet storage portion of the basin; — Sediment traps without adequate wet or dry storage or sediment traps that allow the discharge of stormwater from below the surface of the wet storage portion of the trap; and — Land disturbance outside of the approved area to be disturbed Pollutant generating activities from PPP: implementation, maintenance, and effectiveness Pollutant generating activities not identified in PPP Pantops Corner SWPPP Inspection Log Inspection: ' Last Rainfall: Date Time Date Rainfall Amount Summary(requirements on back of sheet): Locations of: • Prohibited discharges • Controls needing maintenance • Failed controls: • Evidence that ESCP has not been properly implemented: • Additional measures needed: Corrective actions required: Unimplemented corrective actions from previous inspection: Inspector Signature Date Operator Signature Date "If this report does not identify any incidents of non-compliance, I certify that the construction activity is in compliance with the SWPPP and Construction General Permit." Inspections shall be completed at least once every 5 business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days,the inspection shall be conducted on the next business day. Representative inspections used by utility line installation, pipeline construction, or other similar linear construction activities shall inspect all outfalls discharging to exceptional waters.Where an inspection report does not identify any incidents of non-compliance,the report shall contain a certification that the construction activity is in compliance with the SWPPP and general permit. Inspection requirements: Describe discharges at time of inspection Record land-disturbing activities outside approved ESCP Inspect proper installation, maintenance needs, and effectiveness of: - Perimeter controls, such as silt fence — Soil stockpiles and borrow areas - Completed earthen structures (dams, dikes, ditches,diversions, etc.) — Cut and fill slopes — Sediment basins and traps, sediment barriers, etc. - Channels, flumes, slope drains, etc. — Operational storm inlets - Construction vehicle access routes Areas at final grade or to remain dormant for more than 14 days: — Initiate stabilization activities — Complete stabilization activities within 7 days of stopping work Evidence that ESCP has not been properly implemented: - Concentrated flows of stormwater in conveyances such as rills,rivulets or channels that have not been filtered, settled, or similarly treated prior to discharge, or evidence thereof; - Sediment laden or turbid flows of stormwater that have not been filtered or settled to remove sediments prior to discharge; — Sediment deposition in areas that drain to unprotected stormwater inlets or catch basins that discharge to surface waters. Inlets and catch basins with failing sediments controls due to improper installation, lack of maintenance, or inadequate design are considered unprotected; — Sediment deposition on any property(including public and private streets)outside of the construction activity covered by this general permit; - Required stabilization has not been initiated or completed on portions of the site; - Sediment basins without adequate wet or dry storage volume or sediment basins that allow the discharge of stormwater from below the surface of the wet storage portion of the basin; — Sediment traps without adequate wet or dry storage or sediment traps that allow the discharge of stormwater from below the surface of the wet storage portion of the trap; and — Land disturbance outside of the approved area to be disturbed Pollutant generating activities from PPP: implementation, maintenance, and effectiveness Pollutant generating activities not identified in PPP Pantops Corner SWPPP Inspection Log Inspection: Last Rainfall: Date Time Date Rainfall Amount Summary(requirements on back of sheet): Locations of: • Prohibited discharges • Controls needing maintenance • Failed controls: • Evidence that ESCP has not been properly implemented: • Additional measures needed: Corrective actions required: Unimplemented corrective actions from previous inspection: Inspector Signature Date Operator Signature Date "If this report does not identify any incidents of non-compliance, I certify that the construction activity is in compliance with the SWPPP and Construction General Permit." Inspections shall be completed at least once every 5 business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days,the inspection shall be conducted on the next business day. Representative inspections used by utility line installation, pipeline construction,or other similar linear construction activities shall inspect all outfalls discharging to exceptional waters.Where an inspection report does not identify any incidents of non-compliance,the report shall contain a certification that the construction activity is in compliance with the SWPPP and general permit. Inspection requirements: Describe discharges at time of inspection Record land-disturbing activities outside approved ESCP Inspect proper installation, maintenance needs, and effectiveness of: - Perimeter controls, such as silt fence - Soil stockpiles and borrow areas - Completed earthen structures (dams, dikes, ditches,diversions, etc.) — Cut and fill slopes - Sediment basins and traps, sediment barriers, etc. - Channels,flumes, slope drains, etc. — Operational storm inlets - Construction vehicle access routes Areas at final grade or to remain dormant for more than 14 days: - Initiate stabilization activities — Complete stabilization activities within 7 days of stopping work Evidence that ESCP has not been properly implemented: — Concentrated flows of stormwater in conveyances such as rills, rivulets or channels that have not been filtered, settled,or similarly treated prior to discharge,or evidence thereof; - Sediment laden or turbid flows of stormwater that have not been filtered or settled to remove sediments prior to discharge; — Sediment deposition in areas that drain to unprotected stormwater inlets or catch basins that discharge to surface waters. Inlets and catch basins with failing sediments controls due to improper installation, lack of maintenance,or inadequate design are considered unprotected; — Sediment deposition on any property(including public and private streets)outside of the construction activity covered by this general permit; - Required stabilization has not been initiated or completed on portions of the site; — Sediment basins without adequate wet or dry storage volume or sediment basins that allow the discharge of stormwater from below the surface of the wet storage portion of the basin; — Sediment traps without adequate wet or dry storage or sediment traps that allow the discharge of stormwater from below the surface of the wet storage portion of the trap; and — Land disturbance outside of the approved area to be disturbed Pollutant generating activities from PPP: implementation, maintenance, and effectiveness Pollutant generating activities not identified in PPP Pantops Corner SWPPP Inspection Log Inspection: Last Rainfall: Date Time Date Rainfall Amount Summary(requirements on back of sheet): Locations of: • Prohibited discharges • Controls needing maintenance • Failed controls: • Evidence that ESCP has not been properly implemented: • Additional measures needed: Corrective actions required: Unimplemented corrective actions from previous inspection: Inspector Signature Date Operator Signature Date "If this report does not identify any incidents of non-compliance, I certify that the construction activity is in compliance with the SWPPP and Construction General Permit." Inspections shall be completed at least once every 5 business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days,the inspection shall be conducted on the next business day. Representative inspections used by utility line installation, pipeline construction,or other similar linear construction activities shall inspect all outfalls discharging to exceptional waters.Where an inspection report does not identify any incidents of non-compliance,the report shall contain a certification that the construction activity is in compliance with the SWPPP and general permit. Inspection requirements: Describe discharges at time of inspection Record land-disturbing activities outside approved ESCP Inspect proper installation, maintenance needs, and effectiveness of: — Perimeter controls, such as silt fence — Soil stockpiles and borrow areas - Completed earthen structures (dams, dikes, ditches, diversions, etc.) — Cut and fill slopes - Sediment basins and traps, sediment barriers, etc. — Channels, flumes, slope drains, etc. - Operational storm inlets — Construction vehicle access routes Areas at final grade or to remain dormant for more than 14 days: — Initiate stabilization activities — Complete stabilization activities within 7 days of stopping work Evidence that ESCP has not been properly implemented: - Concentrated flows of stormwater in conveyances such as rills, rivulets or channels that have not been filtered, settled,or similarly treated prior to discharge, or evidence thereof; - Sediment laden or turbid flows of stormwater that have not been filtered or settled to remove sediments prior to discharge; - Sediment deposition in areas that drain to unprotected stormwater inlets or catch basins that discharge to surface waters. Inlets and catch basins with failing sediments controls due to improper installation, lack of maintenance, or inadequate design are considered unprotected; — Sediment deposition on any property(including public and private streets)outside of the construction activity covered by this general permit; — Required stabilization has not been initiated or completed on portions of the site; - Sediment basins without adequate wet or dry storage volume or sediment basins that allow the discharge of stormwater from below the surface of the wet storage portion of the basin; — Sediment traps without adequate wet or dry storage or sediment traps that allow the discharge of stormwater from below the surface of the wet storage portion of the trap; and — Land disturbance outside of the approved area to be disturbed Pollutant generating activities from PPP: implementation, maintenance, and effectiveness Pollutant generating activities not identified in PPP