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HomeMy WebLinkAboutWPO201500057 VSMP - SWPPP 2015-10-14 Albemarle County Stormwater Pollution Prevention Plan (SWPPP) For Construction Activities At: AVINITY ESTATES SCOTTSVILLE ROAD CHARLOTTESVILLE,VA 22902 Prepared by: COLLINS ENGINEERING, INC 200 GARRETT STREET, SUITE K CHARLOTTESVILLE, VA 22902 434.293.3719 Prepared for: AVINITY ESTATES, LLC 455 SECOND STREET SE,SUITE 400 CHARLOTTESVILLE,VA 22902 434.245.4970 SWPPP Preparation Date: 7 2 Updated: 10/14/2015 CONTENTS: 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 Section 1 - Registration statement Registration Statement General VPDES Permit for Discharges of Stormwater from Construction Activities (VAR10) (Please Type or Print All information) 1. Construction Activity Operator: (General permit coverage will be issued to this operator. The Certification in Item#12 must be signed by the appropriate person associated with this operator.) Name: AVINITY ESTATES, LLC Contact: ALAN TAYLOR Mailing Address: 455 SECOND STREET SE, SUITE 400 City: CHARLOTTESVILLE State: VA Zip: 22902 Phone: 434-245-4970 Email address(if available): alan@riverbenddev.com Indicate If DEQ may transmit general permit correspondence electronically: Yes X❑ No❑ 2. Existing General Permit Registration Number(for renewals only): 3. Name and Location of the Construction Activity: Name: AVINITY ESTATES Address(if available): SCOTTSVILLE ROAD(ROUTE 20) City: CHARLOTTESVILLE State: VA Zip: 22902 County(if not located within a City): ALBEMARLE COUNTY Latitude(decimal degrees): 37.992967 Longitude(decimal degrees): -78.498312 Name and Location of all Off-site Support Activities to be covered under the general permit: Name: Address(if available): City: State: Zip: County(if not located within a City): Latitude(decimal degrees): Longitude(decimal degrees): 4. Status of the Construction Activity(check only one): Federal❑ State❑ Public❑ Private X❑ 5. Nature of the Construction Activity(e.g.,commercial,Industrial,residential,agricultural,oil and gas,etc.): RESIDENTIAL 6. Name of the Receiving Water(s)and Hydrologic Unit Code(HUC): Name: RIVANNA RIVER-MOORES CREEK _ Name: HUC: JR15(020802040402) HUC: 7. If the discharge Is through a Municipal Separate Storm Sewer System(MS4),the name of the MS4 operator: 8. Estimated Project Start and Completion Date: Start Date(mmldd/yyyy): 09/01/2015 Completion Date(mm/dd/yyyy): 09/01/2017 9. Total Land Area of Development(to the nearest one-hundredth acre): 13.453 AC Estimated Area to be Disturbed(to the nearest one-hundredth acre): 12.20 AC 10. Is the area to be disturbed part of a larger common plan of development or sale? Yes❑ No X❑ 11. 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 this Registration Statement. By signing this Registration Statement the operator Is certifying that the SWPPP has been prepared. 12. 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 the possibility of fine and imprisonment knowing violatitns." - Printed Name: (Pi-. Ns^t� Title: Signature: Date: $ �lS l ' (Please sign In INK. This Corti cation must be signed by the appropriate person associated with the operator identified in Item#1.) 01/2014 Page 1 of 1 Section 2 - Notice of General Permit Coverage Section 3 - Nature of Activity PURPOSE: The purpose of this land-disturbing activity is to create a 57 lot subdivision.The total acreage to be disturbed with this plan is 12.20 acres. EXISTING SITE CONDITIONS: The existing site is a somewhat wooded hilly parcel.There are two existing houses.The site is general well drained with some critical slopes. Erosion and sediment control measures have been designed to conform to the existing slope and protect the adjacent properties. ADJACENT AREAS: The site is positioned between Scottsville Road and Avon Street Extended.Avinity I is west of the site. Kappa Sigma Fraternity headquarters borders the site on the east. Residential land is north and south of the site. OFFSITE LAND DISTURBANCE: The site will tie into the existing roads of Avinity I.There is also minimal offsite grading along the south border into the pebble drive right-of-way. SEQUENCE OF CONSTRUCTION: 1. Notify Albemarle County to schedule a pre-construction meeting as required. 2. No erosion control measures may be removed during the construction process without the approval from the inspector on the project. 3. Install the paved construction entrance with wash rack as shown on the plans. Construction entrance to be installed where construction vehicle routes intersect paved public roads, provisions shall be made to minimize the transport of sediment by(vehicular)tracking onto the paved surface. Where sediment is transported onto a public road surface,the road shall be cleaned thoroughly at the end of each day. Sediment shall be removed from the roads by shoveling or sweeping and transporting to a sediment control disposal area. Street washing shall be allowed only after sediment is removed in this manner. Install the wash rack uphill from the proposed sediment trap#1. ACSA will determine the appropriate method of supplying the wash rack. Parking and construction entrance areas shall be cleared of all vegetation, roots, or other objectionable materials before construction road stabilization is installed. 4. Install the initial construction measures as shown on the Phase I Erosion Control Plan sheets. This includes 2 sediment basins,silt fence, ROW diversions, diversion dikes, walls, and drainage pipes shall also be installed at this time. Stabilization measures shall be applied to earthen structures such as dams,dikes,and diversions immediately after installation. Measures intended to trap sediment shall be constructed as a first step with any land disturbance activity and shall be made functional before upslope land disturbance takes place. 5. Place any remaining erosion control items as shown on the Phase I Erosion Control Plan. 6. Once all the erosion control items have been installed as shown on the Phase I Erosion Control Plan and the inspector has approved the erosion control measures,the contractor can begin grading operations. 7. Rough grade the site to the contours shown on the erosion control plan. 8. 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.Temporary soil stabilization shall be applied within seven days to denuded areas that may not be at final grade but will remain dormant (undisturbed)for longer than 30 days. Permanent stabilization shall be applied to areas that are to be left dormant for more than one year. 9. Install the construction measures as shown on the Phase II Erosion Control Plan sheets. Measures intended to trap sediment shall be constructed as a first step with any land disturbance activity and shall be made functional before upslope land disturbance takes place. 10. Install the utilities, curb and gutter, and roads. Inlet protection shall be inspected after each rainfall event and repairs shall be made as needed. If the stone filter becomes clogged with sediment so that it no longer adequately performs its function,the stone must be pulled away and cleaned and/or replaced. Install any remaining erosion control items as shown on the Phase II Erosion Control Plan. 11. Once phase III of construction is complete,the site is stabilized and the inspector has given approval,the contractor can remove the erosion control measures. No item shall be removed unless the upstream areas are stabilized and the inspector gives permission. 12. Maintain all erosion control measures as specified in the Virginia Erosion and Sediment Control handbook, removing only when approved by the local program administrator in accordance with the Virginia Erosion and Sediment Control handbook. 13. All temporary erosion and sediment control measures shall be removed within 30 days after final site stabilization or after the temporary measures are no longer needed, unless otherwise authorized by the local program administrator.Trapped sediment and the disturbed soil areas resulting from the disposition of temporary measures shall be permanently stabilized to prevent further erosion and sedimentation. Section 4 - Erosion and Sediment Control Plan GENERAL NOTES OPANERS MOSS ACQUISITIONS AWNITY ESTATES LLC 39 TH op AVON AES MLLC2�2 455 SECOND �A 5TH AVINITY ESTATES F�0 OSCOTT R COLL1NS P O.BOX 1467 , ' CHARLOTTESNLLE, VA 22902 + U No 35791 Y DEVELOPER: RIV£RBEND DEVELOPMENT,INC W P 0 PLAN a �A.,, � J21 E MAIN S SUITE 201 `BSIONAL , CHARLOTTESWLLE, VA 22902 ...a®, a ENGINEER: COLLINS ENGINEERING 200LOTTEVILLE SUITE22 SCOTTSVILLE DISTRICT °�T'� CNARLOTIESNLLE 22902 "' TAX MAP NO. 09100-00-00-016C0 09100-00-00-016E0 4 �� � +' ZONE PRO ZONE. PRD O'4 DB4319PG247 DB4571 PG88 ALBEMARLE COUNTY VIRGINIA 09100-00-00-016A0 09100-00-00-01400 ZONE.:PRO ZONE PRD DB 4571 PG 88 DB 3472 PG 015 VICINITY MAP TOTAL PROJECT AREA. AMITY ESTATES 09100-00-00-016C0 - 2.472 AC. SCALE: 1" = 3000' 09100-00-00-016E0 - 4.982 AC 09100-00-00-07640 - 4.432 AC AMITY 09100-00-00-01400 - 1.567 AG(PORTION) E < S 13453 AC TOTAL r ZONING PRO-PLANNED RESIDENTIAL DEVELOPMENT-DIA 2013-016 U) Gf TOPOGRAPHY- SURVEY&TOPOGRAPHY PROVIDED BY ROUDABUSH GALE&ASSOCIATES DATED Z a:N w AUGUST,201d TWO FIELD VERIFIED ON DECEMBER 2014. DATUM NAD 83 0 N 2 0 M . FLOODPLAIN: THERE IS NO FLODDPLAIN LOCATED ON THIS SITE FEMA MAP ID /A ) 51003C04070&5100JC0426D DATED FEBRUARY 4,2005. STORMWATER MOAT STORMWATER FOR AMITY ESTATES MILL BE HANDLED BY A PROPOSED STORMWATER MANAGEMENT FACILITY AIST UPLAND OF THE EXISTING SWIM POND. W ADDITIONAL AMITY ESTATES STORMWATER MILL BE TREATED BY A SECOND SWIM FACILITY AT THE SOUTH OF THE SITE AND(2)UPLAND DRY SWALES SWIM SHALL MEET ALL STATE REGULATIONS REQUIRED WITH THE DEVELOPMENTcc FIRE&RESCUE AS REQUIRED,ALL FIRE FLOW WHIN THE DEVELOPMENT SHALL BE A MINIMUM OF AVVINITY I IOU0 GPM AT 20 PSI. ADDITIONALLY,FIRE HYDRANTS SHALL BE PROVIDED ALONG _ - a. THE STREETS FOR FIRE FIRE PREVENTION AT A MAXIMUM SPACING OF 500 FT PER - - IRAVELWAY PROPOSED USES SINGLE-FAMILY ATTACHED UNITS&TOMNHOUSE UNITS - E SINGE FAMILY ATTACHED UNITS 50 TOTAL UNITS(AMITY ESTATES) le::::11] SINGLE FAMILY DETACHED UNITS 14 TOTAL UNITS(ANN/TY ESTATES) g,,____ TOMMHOUSE UNITS 7 TOTAL UNITS(AWN/TY I) tik2` iT�'-' SITE AMENITIES CLUBHOUSE/PAVILION AREA (960 Sc M/N) I f m N TOT LOT (2,745 SF MIN) E k ,r V k DOG PARK (2325 SF MIN) Hit p PASS RECREATION AREA (6,000 SI"MIN) / ACTIVE RECREATIO GRASS COURTYARD(11,500 SF MIN) . P' clipNOTE 1UT LOT RT CQVTNN AT M/NINUM({)SMINCS(2)CIIMBERS(1)SJOE(i) ! ��aa (���`` '--- `NOT E. AND(2)BENCHES ParllR/CNT-LF-WAY 2.24 ACRES rill: "----'‘Ct.NNN..._j77 . ,`,� OPEN SPACE. 202 AC OPEN SPACE(AMITY 1124 PUTTED,0.78 NEW) i -- asp �'� des AC OPEN SPACE(ANN/TY ESTATES) '^ �' -�� ���. '� WPO PLAN SHEET LIST M 5.87/21.71 AC TOTAL AMITY I&ESTATES 25.8X I' _ \` ' LOTS. 5.37 ACRES -` ^+ �'I ' w ._ _ Sheet Number Sheet Title SIDE- 5'M/N ( ) \ _ I _-- - SETBACKS. FRONT-10'MIN WITH VARIATION SUBMITTED TO THE COUNTY i ...I I I I - 1 COVER SHEET (NJ REAR- 10'M/N INTERIOR,20'MIN*HERE LOTS ARE ADJACENT TO THE PRE..ECT I I / I I N. 2 EXISTING CONDITIONS r� BOUNDARY CLUBHOUSE/PAVILION—8'M/N FRONT,5'MIN SIDE 10 MIN REAR / I ..—..— CF) I i / I ' \ 3 GRADING PLAN SETBACKS SHALL INCLUDE A 4'FRONT AND REAR ENCROACHMENT O"ALL ���''��ni 4 PRE-DEVELOPMENT STORMWATER MANAGEMENT PLAN SETBACKS IMTIH PORCHES EAVES AND OTHER ARCHITECTURAL ELEMENTS O'THE r, :I I I HOMES SETBACKS SHALL ALSO ALLOW UP TO A 1'SIDE YARD ENCROACHMENT I. f „ 5 POST-DEVELOPMENT STORMWATER MANAGEMENT PLAN FOR ARCHITECTURAL ELEMENTS AND OVERHANDS PROVIDED THAT THE _....— _--_ I ._--- 1 I I ' ^+ _ 6 STORMWATER MANAGEMENT DETALS d CILLCUUTONS h iENCROACHMENTS ARE FIR£RATED PER BUILDING DEPARTMENT REQUIREMENTS ` t l IMIEN BUILDING SEPARATION IS REDUCED FROM 10' SETBACKS MERE APPROVED _ ' i I 'I y I --- w p /P" 7 STORMWATER MANAGEMENT DETAILS d CALCULATIONSWITH THE BUILDING MOOFICARCN WA/VER REOUEST INTH ZMA 201J-016. I -I I _ ,@WN wBU/LONG HEIGHT d5'MAXIMUM HEIGHT ,' j - € 8 EROSION d SEDIMENT CONTROL NARRATIVE d DETAILS nl 'o'z ilf ce ( Q �¢ 9 EROSION d SEDIMENT CONTROL PLAN PHASE I W w PARK/NG £Apl PRO'OS£D LOT SHALL PROVIDE O'F-STREET PARKING FOR TRIO VE}IICLES/N ----�-- -I Mgtl ® SZA MINIMUM 18'DEEP DRIVEWAY AND A GARAGE ADDITIONALLY,ROADWAYS SHALL - - ' I / 10 EROSION d SEDIMENT CONTROL PLAN PHASEIII / 11 EROSION d SEDIMENT CONTROL GLLCULATIONS w _ACCOMMODATE OVERFLOW PARKING ON-STREET MTH PARKING ON ONE DOE ONLY r PHASING THE PROECT MAY BE COMPLETED WTII A MAXIMUM LF 4 PHASES AS SIOMN ON - I I; ,v„ Z JTHIS ROAD PLAN I TOTAL 11 PAGES ..JISTREETS CURB h GUTTER PRIVATE STREETS ,' OUTLITES: SITE SHALL BE SERVED BY PUBLIC WATER AND SERER IfI W w_CONSTRUCTION)RAFFlCI ALL CQVSTRUCTON)RAFFlC FOR THE DEVELOPMENT O'ANNITY ESTATES SHALL I iIENTER TIE SITE FRCMM TINE EXIS`NC DR/IEWAY AT ROUTE 1D I 'I WDENSITY ANN/IY C 107 UN/75/9.2J6 AC 11.59 UNITS/ACI p- II M �� {I ,— iZNIll '^ aANN/TY ESTATES 61 UNIIS//I.886 AC S81 UNHS/AC I I 1, I -I ll v'LANDSCAPING ALL MARLEPROPOSEDCO ROADWAYS SHALL HAVE STREET TREES IN OUTSI ANCE THE i I I I i j I I 1O1• I 'I I ,, "" J N aALBEMARL£COUNTY REOU/REMEN7S ALL TREES S/ALL B£OUISO£LF TINE ROW I I I I I: :Il I I I { -- I/ = Q lWL WITHIN A 5'RIDE LANDSCAPING AND MAINTENANCE EASEMENT AND ALL STREET !I _ I ,‘ __- +___4 F _ 1 I 6 W U '^ > a IKEES SHALL BE MAINTAINED BY THE HOA. I■2 I c s PHASING THIS PROECT IS DIVIDED INTO(4)PHASES TOTAL. j I_ --_—__r,_ -- —' I I ' LU 0 "o I TRAFFIC GENERATION: TRIP GENERATION BASED ON ITE TRIP GENERATION MANUAL(8TH EDITION) • I I I I I I I I I I i I i ' _ -I�� ;i� • Y i 64 SINGLE FAMILY UNITS(CODE 210) I I e."I'"'" I I. I,p I.e I 'I"'"1 I"" I I'"I"' I i� In w fill NV(JC16 ENTER/306 ENT) I i I i H. I I, I I I I I I " I %: I z AM PEAK: 48 VPN(12 ENTER/36 EXT) I I I i i I I I I I i i 'i� I is — PM PEAK: 65 VPH(41 ENTER/24 EXIT) 1 �� -ma ° °u 7 TOMNNCIV£UNITS(CODE 210) I I.— _.._.._ _._� Z > i 5 I ) w .... -- - - _PEBBLE tauvE wa i`o 41 VPD(20.5 ENTER/20.5 EX1 AM PEAK 3 1PH(1 ENTER/2 DOI) PM PEAK: 4 VAR(2 ENTER/2 EXIT) - W c j Avinit)II Range of Residential Uses LIJ as TRASH: ALL UNITS SHALL HAVE AN INDIVIDUAL TRASH CONTAINER AND THE HOA SHALL o c PROVIDE TRASH COLLECTION SLRWCES i 1 ' . Townhome Single Family Proposed ';'1 I Block Attached/Detached Number RESERVOIR WATERSHED: HOME'S CREEK WATERSHED I (min-max) (n , 1 I (min-max) of Units S AGRICULTURAL-FORESTAL. NONE 11 1 AWnrty I- 6-8 - 7 J 4 5 A 0-20 0-9 8 PLACES O'BURIAL NONE r—______..____, I1 B 0-30 0.15 IS 11.1. _o RETAINING WALL. ALL WALLS AS SHOWY THIS PLAN SHEET AND THE GRADING PLAN SHEET C 0-30 5-15 14 SHALL NOT EXCEED 6'IN HEI HT SHEET LAYOUT D 0-34 12-32 27 0 a .E ON SCALE: 1" = 100' TOTAL 0-122 12-71 71 0 'o NOTES 1)Within Aviniry I,a 24 unit condo building is proposed to be u O i u' eliminated and in its place,a maximum of(8)townhouse 2 g 1)THIS PROPERTY DOES NOT LIE WITHIN AN AGRICULTURAL AND/OR FORESTAL DISTRICT units are proposed. 2)The overall N G W _ 2) THIS PRO.ECT IS NOT LOCATED WITHIN FLOODPLAIN EMITS,BASED ON FERIA MAP NUMBER 5100JC0407D h density(number of units)for AWniry shall decrease from a s _`- 51003C04260 ADOPTED FEBRUARY 4,2005. 124 units to 106-108 units with the approval of this a In MB NO. o E re[oning.The original proposed condominium building shall ^,8 3)EACH LOT AS SHOWN HEREON CONTAINS A BUILDING SITE PAHICH MEETS THE REQUIREMENTS OF SECTON be replaced with(6)-(8)townhouse units. 092033 4.2.2(01(18-520) 3)The proposed minimum number of units within Avinity II SCALE 31 4)ALL PROPOSED EASEMENTS SHALL BE DEDICATED TO PUBLIC USE. shall be 60 units with a maximum number of 102 units.The AS NOTED "_, density shall range between 5 DU/AC and 10 DU/AC. SHEET N0. 5)STREET TREES SHALL BE PROVIDED ALONG ALL THE PUBLIC STREETS 50'O.0 IN AC/AAVUANCE PATH VVOT AND ALBEMARLE COUNTY STANDARDS • I «. ( � TH op Mt i it 1� G ;----'',1` v /l/ /StOT, (� / t -' EXISTING SANITARY �i / or / ( n i EXISTING APPROVED SEWER SCOT[R COI.LINS'Y, ( y or-r wr I S �1 O i 1 -7 T t '�( / I SWM POND EXISTING WATERLINE J U No. 35791 ,'a dr ^' '� 7. i ' ; '� / '�9>4• EXISTING MANAGED %."Q, Ae �s / z..'�,_, • - a •+^ ALLJJJ -"w. t.� - •�E STEEP SLOPES TO BE 'p/ONAL ', •aec`\.r, 7-- y ,� +65• IMPACTED MANAGED IMP 91-15 I I 1_, 1 // / �Y _...y JASPER L&MAWS P HAYNES ' ''( 1 ,----\---_,,,,,_,,,---.- - r,�I D.B.859 P. 143 f� 4.' I I \ 4' , ,' ,/, .:7/ . D.B.619 P 368 PUT .. III F 1' ���`�:-_- _Mr.' r ,l! her _ EI l { ; m /moo 1; )�. i1A. { e= AVINI _ rf%,�p 11 :,1 t.l " t 7 �,`'```.,5,,,,,,,, -; r - N49> I. a I 7 6'P II ii t1`� of j' ( i I1 ys.t,,+ - '\...- --. 5P6,3 - _.11 t IT II L v^rn" p gT�MpP�p9g1p-p16yCg '.� f - �: "�a AL/ 1I! (r , 7 { }} �M D.B.43I9-Z17 LC _ io f lil F I w ' J I �"'CY 1.' {7{ .7 "`-'=I l Tn ,_�EXISTING BUILDING -_�� fi.7.s- L� �/� N L '"^ ). �Ii,P' 1 y I - 'd ti TO BE DEMOLISHED F \ �// T /� .._ __ , I f'1� s 6 , 'f \ i P ry SCO7/7psN(IE,r.H N gf. �. '~ --L_:__ o a I II' ' 4 4'; ',,r,,,,t..,.c•"'pi° K'� P 70T?RNITY ..`� SyF : d -``I✓.- ,- 2 .I _ _Nt 01 ' fi \. ,.J.,, CD,B,D0 Jz608 PLAT ( _ ?r' c u2i ,i e_._ '> \ 11'1 �\ / e4 • l e `"fit 44 N // ` I--.-. •. - •� ' 'J�4 J7T i.,'.£ �4sr.77. A 3i� "a[w_ - / / py a '� ®., I:! AL, r7" t . '�!£¢ >Y.; +„.';, + i1,4 p,o. rr,3r f'/ .. \ ,\ �•• �� l U- /4a6�1 cc ti, ��r � / W sz ' ` <_ 1 TISNLLEI RD iHI HOLDINGS LLC 793' qv,��/ ,/ / , y'�p 46 I , s IC/O KAPPA SIG FRATERNITY - /a. or 40.. o. '!''',....",'/. .M k - -_ \ J D.B.3257 P 702 / ' �a 1 / __ O.B.1080 P.173 PUT , / , -&WIT _--'_ - 562 a 1l tiw"v"+�"Jn EXISTING wA RjN / SAWER ARV _ ��__ �� I r J, /`'// N54T6Y8'W • ' ", JAMES 9tMOS5 1 I 1 I I / /4�7 3.Y / D.B.1556 P.7I0 I \ i 1/ 4 J W.B.74 P.16 ///, 4/ / I .r - // pAP 'II I I I / / //u. 473.8� ' PROPERTY BOUNDARY \ _ .( - / / / / it l �4 / /, \ /c`° // ./ /. CT) U / : �� — / EXISTING PARKING LOT, s. k /, /'//O,/// / IMP 90-350 Y - I /,: //Q7 //.'/ M N/F HYDRAULIC SAND COMPANY INC /� / D.B.TAIP 57I P5.E88 /I .-J // // /gyp/ /,%;' �/ D.B.862 P.200 / N/E D.B 45 ESTATE LC _°I /l .,',I / / /"'" /�•Y /'/ / /" ' r I EXISTING KAPPA SIGMA `- 1�1� / / .%,.,, _ • .� HEADQUARTERSBLDG - EXISTING B'SANITAR ,-'?/Q,'// // / O - , s I`., i i/ SEWER LINE - / �/! / a) / Y / / / / - '� -_--I i - EXISTING WATERLINE ^,, X. ! ��/ / / � II' , / / % � 1 �' ,./ /' > Z / \ J J / IMP 91-16AI+ \ J � / d Z a IMP 90-J58 / N/E SC0TTSW ROAD HOLDINGS LLC :z / / \`/ / > N - D.B.599 P.239 ,4, // / / o O € SOUB9(p CHURCH OF COD ry I / 10, ;! ' g n j/184,26 , `LLI _ pI j/484 / r' / - Z t /, O a EXISTING BUILDINGS TO BE DEMOLISHED(TYP). \ - / /'jT00 48&;T2`J /C ' ;/ '',' Z El Li O PRIOR TO THE DEMOLITION OF THE MAIN /// I 'p 484j8 / 1 /'\. i, Q V a HOUSE AND ITS ASSOCIATED STRUCTURES, - •' THE DEVELOPER SHALL DOCUMENT THE ' STRUCTURES WM-I LABELED PHOTOGRAPHS - )/ / i j ri^ / '/r' _ - DOCUMENTATION SHALL INCLUDE f �, / / / �$ , `' 0 CA PHOTOGRAPHS SHOWING ALL SIDES OF EACH - - - - / 'I / .L s STRUCTURE.CONTEXT OF THE SITE,A SKETCH .552110'62•E pa98`....' / I ! �/p' // L1J ~ o /, I c 5e1YSYF S615Y5YE 43500' / } v' E FLOORPLAN AND,A SKETCH PLAN OF THE SIB 4 If_ IDENTIFYING THE PHOTO LOCATIONS SHOWN L' .- , - DaSTINGICOMPAERCIAL ,^ AS PROVIDED THIS DOCUMENTATION SHALL 1 �'w 0 i ENTRANCE U I LLl IA ,, BE SUBMITTED TO ALBEMARLE COUNTY /' IfA�A$IfiMJA PROPERTY _- 485.14 I— Z COMMUNITY DEVELOPMENT PRIOR TO THE I - O' EXISTING OVERHEAD PROPERTY BOUNDARY 4 /! __ REQUEST FOR A DEMOLITION PERMIT FOR ANY I POWERLINE TO BE w OF THE STRUCTURES REROUTED• / 7 U) > U /r ` Q w� / / �'o I- y.a; / — W = 11 A4ft EXISTING BUILDING yes W $n / I ) o , TO BE DEMOLISHED / `o a / m c� / , EXISTING OVERHEAD ay Q .A POWERLINE / GRAPHIC SCALE r :1 / 1 IMP 91-16A T. 5 E j N/F AWNITY ESUTE$LLC D.B.4571 P 88 R. / (IN FEET) Q 4 / NOTES N ''4 tt \\ "`� 492 02 ^ 8 �.. N61T2'IYW B0746' \� -, P // 1 THIS PROJECT IS NOT LOCATED WITHIN FLOODPLAIN LIMITS,BASED ON FEMA MAP 25'ROW ----- - - I`" 2 TOPOGRAPHY&BOUNDARY INFORMATION PROVIDED BY ROUDABUSH GALE& __.— _..-_.- __ / usi ;),:;_ -I T_- = - F -- ,.-- � --- __< _ - __ y - a50 3 ASSOCIATES THE TOPOGRAPHY HAS BEEN FIELD VERIFIED IN JUNE,2014 '08 NO. �> / .. > 092033 Ol IX ROW -� �" � \ - --y--- - PEBBLE DRIVE,�✓ 18•' 3 MANAGED STEEP SLOPES EXIST AS SHOWN ON THE PROPERTY. / /p a ROM J17- / ? cmp / 4. NO WPO STREAM BUFFER ON THE SUBJECT PROPERTY SCALE. 552 --—--—-- --- tt• -_ / __ EXISTING MANAGED �. V I \��/// PHONE - EXISTING GRAVEL DRIVEWAY AND 1 STEEP SLOPES TO BE Tho g;1-,--. \\ / 5 THIS PROPERTY IS NOT LOCATED WITHIN A DAM INUNDATION ZONE. 1"=5�' I i PEE +I ACCESS TO PARCELS 90-35F,91-16B,J IMPACTED(TIP.) OFT.4�02 / / (I)/-- S"E2 NO. . -- I---- , - I1 I I I AND 91-18A E`a ,4 t l ' _�_ Sys, I EXTEND 10'WIDE TURN LANE fIt ;�"� �. i'r I,te°,r,`wr,% , f WWI / -_ \�ssf �'AT 2%FROM EXISTING GRADE ,. 1y7 .' `r^ ,i. Tr j , 7 / 1 TIE GRADE IN WITHIN IX ROW SCOTT R. COLLINS'Z _. 1 -` / , u I 'aa r mr I /. •^'i , ' " - /1' .e - _ TONAL ' .Jj k 1 1y� " _ •��•^ - -�--� E P VAR.WIDTH PRIVATE S70RMWATER MANAGEMENT F {_P'-''.--,1,1 ( -_ ��•� `,I ' ✓ I' X+'•=,.•��� ACCESS AND MAINTENANCE EASEMENT \ '.. / Y-i` - ,- a - ,-• �l�, + 7 y 1 - SCpTISNLIIMP I RD 1NIosi LLG " - t .1:'' --..` ,C/0 KAPPA 9C FRAIEfUIITY . sr I y" in `, AVINITY I -.■■ ,�fi R " < D.B.DiQB032 71 i3 T REPLACE IMOST1NG 4B'CULVEFtT / ,`� t-- 7� �� iiii, 1 ' OCT_',' N -=® - --- _ WIiTl4l LF 4T RCA CULVERT ,, al Jiiil -- s— 1 "�'il L a i p ��LL , S 'm 'n- 'l' • r' ' t , % I :•. ; C I Ti,, �` 'f:;r Y �.._ �� ,Ip ... EXISTING MANAGED \ yiii , , d AA.�� ,,r, 1 ;, l. ice ' ��,`' 4' -�!f,. l, 4.. �y yd:.'".,- 'yh ••' •�C� (PIE'WALL S Cp 7' vn _ 'f : s« �',. ,) �'f l-1 'i ,II: "{` $i '. ���/ 7 �j PFACIOLITY FOR` ��ii496.01W _ _ h 4 p , I ! i _ t ( it.t�: `����� ry a9o.o Bw - I t 1 - -tea* , • r 3 e - •,�v� ©�� ►�O•i'._ AVINITY ESTATE (FIE WALL - 5 �p ••���� � STEEP SLOPE ,i' wr '' 'T 'I*1'i ' i. --s® d , - / 503.0 TW SLOPES IN THIS 7AREA THAT E Ii 1 � � m •J+'I 7, 'I EX SWM FACILITY '' I i. • j. I I, 497.0 BW PROPOSED 70 BE DISTURBED SHALL BE - / z l I t _�, q FOR AVINITY �..� .:� ' .,�' �- —� 1 x--T. (. , ' a 1 , {P)6'WALL GRADED IN ACCORDANCE STEEP THE �_'r /--_/- � EXTEND 10'WIDE TURN LANE N'i w �,. ' l t AJ II OA S11.OTW RECENTLY APPROVED STEEP SLOPES -,----,1 _ 0 • t , II -; _ 5050 BW ORDNANCE 'I'- A7 GRADE I EXITHIN EX R OW +' .n _ ��� ���. WALLS(WITH MAXIMUM ��.- ��� ,1 ` - TIE GRADE IN WITHIN EX.ROW • - ;- �\\\ .y _:.' _ (P)8'WALL HEIGHT OF 6')AND GRADING AT 3:1 , `�„ 2: -2 ,. 01�. t, 519.0 TW SLOPES OR FLATTER WILL BE USED IN �� 6 ` ,� -L '" ..-. --._-.- t' \ *-f i i 1,,OO,�. 513.0 BW THESE AREAS WHERE THE MANAGED 'i M __._ . .y _... �- _.':./ ii ,.,� SLOPES ARE PRESENT. - _._- »-._-ts/ ®', �_ EASEMENT' � �'Y"'• (P)VAR.WIDTH STORMWATER MANAGEMENT '+ / CI , �. �• 1- 52 ACCESS AND MAINTENANCEE ` \ '1 %r I 'ti: .„�.. t -i a [ R ,-. I f ��`�• I EXISTING MANAGED • / , __'\ ...,' J/ ig T _ T. 1. = `1\ STEEP SLOPES G / / ''\-��,\_ - ti o m ) �_ • !+�_ �, v � ♦ _ 9 PRIVATE STORM - ___ / . a �o._ _i� S SMT- r 1I ' REPLACE EXISTING 4B'CULVERT-. IF c � Nii •_�-.,. / /� -�\[ �_ - 7 EWER E ___ � /, / / J , ,Q �/�i � ` - Y f I I /� / WITH 28 LF 48'RCP CULVERT � o; 7. EXISTING MANAGED ;1 t.y 111ii I ® - ,1 I - ://,/ /,� J STEEP SLOPES r �j I" I-. I I - j { �I I y / 471 3b/ i t I (P)VAR.WIDTH PRIVATE STORMWATER MANAGEMENT _ I� j 28B YD - , I■, I i ` ! - '� CM • T 4 F � r^ _-�_ ,- ';1 _ ( , t, � Ih1��� 1 s �'/ le_____1 \ ,� I. I. i i�FF„ 1 /_ �' 47761 ACCESS AND MANTENANCE EASEMENT Ie il� , '' 1 / /' /: / - 19 O PA 111;Abr. ® - n IIII a r ---- � ,1 �� - ■�j I a i I _y %(! - _'.� is i O� taw)I ar 11 � Ili i i I 9tla � i. / ,'/ ' ilar �'1 'AP;�� � �� ��- ' j i� PROPOSED UNDEGROUND REROUTING OF • l /.- �/ ���� �� ' ' ' / w1,----L ` �I ff EXISTING OVERHEAD ELECTRICE , - LINE 1 I I , - / , . -----------_________/_1.4____ i :4-- -. it-°- 411101144611 SW W� 1/�, I �1 I 1 114a, II • • ISNefl i — — 1 I d ;' <-i can fa_ -44a . /z, VV AtliNtiall# i ; ', s [+ ,iiii ID. ,� ,L' W ' ^Ike • I1 ;11 ;ft 111 r1 eFi: fir -- �,1 '! �§ --` I I ( IW. L_ �� 1 J W r 1 Z (P)VAR.WIDTH ST6RMWATER MANAGEMENT '6; a _ I! 1 { ' r __ 1. , -/ i .// /. Q y e / I ACCESS AND MAINTENANCE EASEMENT, 1 I 1 'J ,, � -R I I 1 - ( /-'7/ / ,/J 21 W U cn - ��. \. LU 1_�Ir _--- / i - - I _ - r �/ E o ®1� i , - 8 � RR , 1 , „_____ _ / i - -- II I �� ,©' 42�YD ` it � (IS � r. � .�r��w�114:4��_ r�.__----'A Ul W 2 2 Qi\� ) 1 I .t I I e�'h� Id�'� . 11 ,:ill (�I 4 4 I I \ r /` W • / ,I ® 6► I I0 ©� m�l `� m I i,: �/r •©�� = I ��__ 1 l r l r � j w T y � m NOTES / l / //���` " / � S� ,Y S=i&elk \rt-_.- 0 - P j ) 1` I-(1 �.� / s-CONTRACTOR SHALL VERIFY ALL TIE-IN ROAD CONNECTIONS FOR AVINITY ESTATES ROADS TO ANY ROAD W Y 1, / j - sr�r-__- ,®.,,ry- ,r \.dam__..._._ y.__.�d._._.-v.-�sb/! � 3 ...,;-. I.' ' / ' /� m ;--- >�RC -: - - - --iikVi - ,�. 7 r PROPOSED SWM - CONSTRUCTION CONTRACTOR IS RESPONSIBLE FOR NOTIFYING THE ENGINEER OF ANY I- "5 / I - -- - - EXISTING OR UNDER /i I � G, V -tlta' iL7d �:YrI9-IVl II A/1ER 1�i 1'���� ` 1 - ,:y: FACILITY FOR DISCREPANCIES BETWEEN THE EXISTING ROADS AND/OR CURB AND GUTTER AND THE PROPOSED ROADS, (n ' -- / , 1 kj^ -^� ^'^ �'�'�'�• -'�"'��'--�' ,- s- - VINI7Y ESTATE ;/, O /` CURB&GUTTER CONTRACTOR SHALL CONTACT ENGINEER TO INSPECT CURB AND ROADWAY TIE-INS TO H °2 / ; \ I I Smite iromr a�, >�I mi'ImI� I .i1r��M��', L II�_fit(c})T.I pia EXISTING ROADS,PRIOR TO ANY CONCRETE OR PAVEMENT BEING PLACED n / / �\ /- esy.� �,:. 1�..+i ��ia.��sne��Iww. 1al6rruww��waals9im�aYf�alY�_(ewslv�s�.ai�.m:1;- - 11 ' /• Y€ rr �� y t-�R.\ �t� .� - 1•--• _�I , •'' .�1 � p, IE (V3.CONTRACTOR SHALL VERIFY CURB ELEVATIONS ADJACENT TO THE SANITARY SEWER MANHOLES TO ENSURE I- \ I -1.0+ ®Y }1 �. _ - , �E �� -_,�� ,� i. [�� =CJ THAT MANHOLE TOPS ARE CONSISTENT WITH THE ADJACENT PROPOSED CURB ELEVATIONS W li / �. 1 ;". �'\`- .�.4 m Q '� • ®�IKY{yY /, 3.CONTRACTOR SHALL PROVIDE ENGINEER SURVEY WORKSHEETS OF ALL ROADWAYS,PARKING LOTS,ALLEYS, /i ' r 'I , BYD 40- I M \ /,' �� /, MANHOLE TOPS AND DRAINAGE STRUCTURES PRIOR TO INSTALLATION OF CURBING,DRAINAGE,OR UTILITIES O f E \ / I �- I I I I I (P) AR. ID I I' I'i4 ���.M.11/12 1• i; /' �= TO COLLINS ENGINEERING FOR REVIEW AND APPROVAL PRIOR TO CONSTRUCTION COLLINS ENGINEERING Q i , .. 4in Q I I ' �' ■ ` SURVEY SHEETS TO ENSURE POSITIVE DRAINAGE AND PROPER ELEVATIONS FOR P• TE'TOR \'7 �-. \ SHALL VERIFY ALL - STRUCTION I I , �{ Jie.401, `o �/ p, SANITARY AND WATERLINE EASEMENTS SHALL BE DEDICATED TO ACSA FOR PUBLIC USE. O `a I I�YD _:;, _ DVD _ 40D- Vb L v� '=r '� 5.ALL CROSS DRAINS AND UNDERDRAINS SHALL BE INSTALLED PER VDOT STANDARDS. OELL D I`\``�7'� �g/ ®,+1e� I`J�. / 6 WALLS WITHIN SIORMWAIER MANAGEMENT FACILITIES ARE DESIGNED FOR INUNDATED CONDITIONS TO THE CV�• �� . 1 �A ` „at_. �I i ^ ioo-YEAR STORM ELEVATION,AND ARE PROVIDED WITTITHIS FINAL SITE PLAN w ti c3 "� - (P)VAR WIDTHPI.:1F�r�„TE • AG ® 4 8• - ' - - -.._"- _-_ ACCESS AND MAINTENANCE EASEMENT PROVIDES r10P JOB NOO..3 c' --- - ___ ----- - -- --i -ACCEss-EROM-eROPERTYsorFBBLE-DR•E P get ` a / GRAPHIC SCALE:` r- 'a ---- LE DRIV�EBB ,� ,; e, „� 0 3 S€ P SCALE5 1" 0 PHONE - % // - (IN FEET),aa SHEET NO. 1 itch- 50 IL 3 , ■ I LEGEND GENERAL NOTES EROSION CONTROL NOTES DESCRIPTION OF EROSION & SEDIMENT EROSION CONTROL NOTES & NARRATIVE TH OFGr ROADS 1 THE OKNER/CLIENT OF THIS PROPERTY IS. ES-7.UNLESS OTHERWSE INDICATED,ALL VEGETATIVE AND STRUCTURAL EROSION CONTROL MEASURES: THERPURPOSE OF THIS LAND-DISTURBING ACTIVITY IS TO CREATE A 57 LOT SUBDIWSICW. THE TOTAL �� MOSS ACQUISITIONS AND SEDIMENT CONTROL PRACTICES BILL BE CONSTRUCTED AND ACREAGE TO BE DISTURBED WM THIS PLAN IS 1220 ACRES SCOTT R COLLINS% -- --- --- MAINTAINED ALL'TAHD/NG TO MINIMUM STANDARDS AND HANDBOOK ATIONS R EROSION AND SEDIMENT CONTROL MEASURES EXISTING SITE CONDITION "'- __ -I EXISTING CULVERT J21 E MAIN STREETO CNARL077E"SNLLE VA 22902 THE VIRGINIA EROSION AND SEDIMENT CONTROL AND VIRGINIAU No 35791 ' CULVERT REGULATIONS VR 615-02-00 EROSION AND SEDIMENT CONTROL l7/S ANTICIPATED THAT A CONSTRUCTION ENTRANCE TEMPORARY DIVERSION THE EXISTING SITE IS A SOMEWHAT NODDED HILLY PARCEL. THERE ARE TWO EXISTING HOUSES THE SITE IS AMITY ESTATES LLC REGULATIONS DIKES RIGHT OF WAY DIVERSION,SEDIMENT TRAPS AND BASINS OUTLET GENERALLY N£LL DRAINED WIM SOME CRITICAL SLOPES EROSION AND SEDIMENT CONTROL MEASURES NAVE FrTh Q DROP INLET&STRUCTURE NO. 455 STREET SE SM FLOOR ES-2:THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE MEEK PRIOR TO BEEN DESIGNED TO CONFORM TD THE EXISTING SITE SLOPE AND PROTECT TIE ADJACENT PROPERTIES �.n, .A, dI5 SECONDESNLLE VA 22902 PROTECTION,INLET PROTECTION,AND SILT FENCE BILL BE INSTALLED TO `S CURB THE PRE-CONSTRUCTION CONFERENCE ONE WEEK PRIOR TO ME ADJACENT AREAS: SIONIC 2 ME OEVEI.OPER OR MlS PROPERTY IS COMMENGMENT OR LAND DISTURBING ACTIVITY,AND ON£WEEK PRIOR TO CONTROL SURFACE DRAINAGE TEMPORARY SEEDING WLL BE USED IMMEDIATELY ME SITE IS POSITIONED BET*EEN SCOTTSNLLE ROAD AND ANON STREET EXTENDED. AVINITY 1/S NEST O" I _I CURB&GUTTER RIVERBEND DEVELOPMENT,INC. THE FINAL INSPECTION. FALOWNG ALL LAND DISTURBANCE ACTIVITIES TEMPORARY STUMP/LE AREAS THE SITE KAPPA SIGMA FRATERNITY HEADQUARTERS BORDERS THE SITE ON THE EAST RESIDENTIAL LAND IS 321 E MAIN ST,SUITE 201 ES-SALT EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR BILL BE MAINTAINED FROM TOPSOIL THAT MILL BE STRIPPED FROM AREAS TO BE NORTH AND SOUTH OF THE SITE. - PROPOSED PAVEMENT CHARLOTTESVILLE VA 22902 TO OR AS THE FIRST STEP IN CLEARING. GRADED AND STORED FOR LATER SPREADING STOCKPILE LOCATIONS SHALL BE WFFSITE LAND DISTURBANCE ATTN:ALAN TA FLOP ES-4.A COPY Or THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL ON SITE AND SHALL BE STABILIZED NITH A TEMPORARY VEGETATIVE COVER. THE SITE MILL TIE INTO THE EXISTING ROADS OF INTUITS 1 THERE IS ALSO MINIMAL OFFSITE GRADING ALONG EC-3A DITCH 3 THESE PLANS HAVE BEEN PREPARED BY. BE MAINTAINED ON THE SITE AT ALL TIMES PERMANENT SEEDING WLL BE PERFORMED FOR ALL AREAS NH/CN RILL NO TILE SOUTH BORDER INTO THE PEBBLE DRIVE'ROW 1 COLLINS ENGINEERING INC ES-S:PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OMER THAN CRITICAL AREAS: CI DEPTH OF EC-3A DITCH 200 GARRETT STREET,SUITE K INDICATED ON THESE PLANS(INCLUDING BUT NOT UNITED T0,OFF-SITE LONGER BE EXCAVATED AND WERE CONSTRUCTION ACTIVITIES NAVE CEASED. ( CRITICAL SLOPES THEE WILL BE PROTECTED.AH CARE MILL I TAKEN TO PREVENT THE EROSION AND CURLOTTESNLL£, VA 22902 BORROW OR WASTE AREAS), THE CIOVMACiCOR SHALL SUBMIT A PERMANENT SEEDING SHALL ALSO BE PERFORMED FOR ALL DENUDED AREAS SEDIMENTATION O" EXISTING GRADE AND TO PROTECT NEIGHBORING PROPERRES EC-2 DITCH TELEPHONE: (434)293-3719 FACSIMILE: (434)293-2813 SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR RENEW AND WHICH WILL BE LEFT DORMANT FOR A YEAR OR MORE.SELECTION OF SEED 4. SOURCE OF TOPO&SURVEY' SURVEY PROVIDED BY ROUDABUSH,GALE AND APPROVAL BY THE PLAN APPROVING AUTHORITY MIXTURE WILL DEPEND ON THE TIME R YEAR APPLIED. TEMPORARY SEEDING SEE BOUNDARIES ON THE EROSION AND SEDIMENT CONTROL PLAN PHASE I SHEET,AND DESCRIPTIONS flp DEPTH OF EC-2 DITCH ASSOCIATES DATED AUGUST 2011 TOPO FIELD VERIFIED DECEMBER 2014. ES-6:ME CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL TILL BE PERFORMED FOR ALL DENUDED AREAS WHICHWILL BE LEFT DORMANT ON THIS SHEET S ZONING PRO-PLANNED RESIDENTIAL DEVELOPMENT ZMA TOIJ-076 EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND EARTH DITCH 6. TAX MAP AND PARCEL NUMBER: 91-16G 91-16E 91-16A,91-14 SEDIMENTATION AS DETERMINED BY ME PLAN APPROVING AUTHORITY FOR MORE THAN SEVEN DAYS THESE AREAS SHALL BE SEEDED WEN FAST EEDUENCE OF CONSTRUCTION: •� ••• 7 USERS DATUM:NAD 8J ES-7.ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL GERMINATING VELETA DON IMMEDIATELY FOLLOWING GRADING OF THOSE AREAS. 1 NOTIFY ALBEMARLE COUNTY TO SCHEDULE A PRE-CONSTRUCTION MEETING AS REQUIRED. DRIVEWAY CULVERT B LOCATION/ADDRESS OF PRAECT EAST OF AMITY I DEVELOPMENT MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SELECTION Or SEED MIXTURE WILL DEPEND ON THE TIME Or YEAR APPLIED. 2. NO EROSION CONTROL MEASURES MAY BE REMOVED DURING THE CONSTRUCTION PROCESS WTHOUT THE 9. TOTAL ACREAGE OFSITE: 13453 ACRES SITE DEVEOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. APPROVAL FROM THE INSPECTOR ON THE PREFECT. BENCH MARK 10.SITE PHASING MAXIMUM FOUR PHASES ES-SOURING DEWATERING OPERATIONS WATER HILL BE PUMPED INTO AN 3. INSTALL THE PAVED CONSTRUCTION ENTRANCE INTH WASH RACK AS SHOW ON THE PLANS zd Z + 3.01 SAFETY FENCE-SAFETY FENCE NILL BE INSTALLED AROUND ALL CONSTRUCTION ENTRANCE TO BE INSTALLED WHERE CONSTRUCTION VEHICLE ROUTES INTERSECT PAVED 11 PUBLIC UnunES CONNECT TO EXISRNG PUBLIC SEWER AND WATER APPROVED WATER FILTERING DEVICEE a O CLEARING LIMITS ES-9:THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PROPOSED SEDIMENT BASINS AND SEDIMENT TRAPS PUBLIC ROADS PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OFSEDIMENT BY(VEHICULAR) •COONS ENGINEERING SHALL NOT HAVE AUTHORITY OVER CONTRACTORS WORK, PERIODICALLY AND AFTER EACH RUNOFF-PRODUCING RAINFALL EVENT 3.02 CONSTRUCTION ENTRANCE- ONE CONSTRUCTION ENTRANCE SHALL BE TRACKING ONTO THE PAVED SURFACE. *HERE SEDIMENT IS TRANSPORTED ONTO A PUBLIC ROAD WOT STANDARD STOP SIGN N SAFETY PRECAUTION$SCHEDULES OR COMPLIANCE MITIH LAWS AND REGULATIONS OR ANY NECESSARY REPAIRSCLEANUP TO MAINTAIN THE EFFECTIVENESS INSTALLED AT WESMALL RIVE THIS HILL BE THE ONLY POINT OF INGRESS SURFACE, THE ROAD SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY SEDIMENT SHALL BE (I) OF EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND TRANSPORTING TO A SEDIMENT CONTROLv, o ,T.,NE SHALL NOT ASSUME RESPONSIBILITY FOR ANY CONSTRUCTION STARTED PRIOR TO AND EGRESS TO THE SITE. CARE MILL BE TAKEN TO PROTECT ADJACENT Z io -'--= EXISTING CONTOUR PLAN APPROVAL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER.CONTROL NOTES ROADWAYS FROM TRANSFER R SEDIMENT MANNER. INSTALL THE WASH RACK UPHILL FROM PROPOSED SEDIMENT TRAP AN ACSA WU DETERMINE g CID PROPOSED CONTOUR EROSION & SEDIMENT CONTROL 1 THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WIEK PRIOR TO THE 3.05 SILT FENCE-SILT FENCE'BILL BE PLACED ON THE DOWNSTREAM SIDE OF THE APPROPRIATE METHOD OF SUPPLING THE WASH RACK. PARKING AND CONSTRUCTION ENTRANCE 0 rt PRE-CONSTRUCTION CONFERENCE ONE WEEK PRIOR TO THE COMMENCEMENT O LAND 307 DISTURBANCE DRAIN THERE NOPROTFCTION ON THE PL IP NTLL BE INSTALLED ON EACH CONSTRS AREAS UCTION ROAD STAB/L ALL BE CLEARED OF ALL S INS7;ILLED.ROOTS OR OTHER OBJECTIONABLE MATERIALS BEFORE M E w 140 s5 PROPOSED SPOT ELEVATION MEASURES: DISTURBING ACTIVITY,AND ONE MEEK PRIOR 1D THE FINAL INSEECTIR. 4. INSTALL THE INITIAL CONSTRUCTION MEASURES AS SHOWN ON THE PHASE I EROSION CONTROL PLAN (An TBC DENOTES 7OP/BACK OF CURB STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE IN ALLTAIDANCE 2. ALL EROSION AND SEDIMENT CONTROL MEASURES BILL BE CONSTRUCTED AND MAINTAINED PROPOSED INLET AS SHOWN ON THE PUNS U) ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS O THE VIRGINIA EROSION AND SHEETS THIS INCLUDES 2 SEDIMENT BASINS SILT FENCE ROW DIVERSIONS DIVERSION DIKES WALLS AND T/B DENOTES TOP OF BOX WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK.STRUCTURAL SEDIMENT CONTROL HANDBOOK AND NROIRA REGULATIONS NR 625-02-00 EROSION AND 3.09 TEMPORARY DIVERSION DIKE-DIVERSION DIKES WILL USED AROUND THE DRAINAGE PIPES SHALL ALSO BE INSTALLED AT THIS TIME STABILIZATION MEASURES SHALL BE APPLIED ~ PRACTICES USED IN THIS SECTION CONSIST R THE FCELOWNG SEDIMENT CONTROL REGULATIONS PERIMETER OF SITE DISTURBANCE WHERE SHOWN ON THE PLANS TO DIRECT TO EARTHEN STRUCTURES SUCH AS DAMS DIKES AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION. ' J ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACID PRIOR TV OR AS RUNOFF TO ON-SITE SEDIMENT CONTROL FACILITIES MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP NITN ANY LAND W EROSION CONTROL *HA CIBOCK SPEOFlG M/MOER iRYA AnFROAETY BARRIER INSTALLED 7D PREVENT ACCESS TO AN EROSION CONTROL MEASURE 4. THE FIRST SWP IN CLEARING A COPY O THE APPRO ED EROSION AND SEDIMENT CONTROL PLAN SHALL BE 313 TEMPORARY SEDIMENT TRAP- TEMPORARY SEDIMENT TRAPS WILL BE DISTURBANCE ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES ��// * TO PROHIBIT THEUNDESIRABLE USE OF AN EROSION CONTROL MEASURE BY THE PUBLIC MAINTAINED ON THE SITE AT ALL TIMES INSTALLED WHERE SHOWN ON THE PLANS PULE LL APPLICABLE TO ANY CONTROL MEASURE OR SERIES OFMEASURES NH/CIH CAN BE CONSIDERED 5 PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED 3.14 TEMPORARY SEDIMENT BASIN- TEMPORARY SEDIMENT BASINS HILL BE S INSTALL ANY REMAINING EROSION CONTROL ITEMS AS SHOWN STALL ON THE PHASE I EROSION CONTROL PLAN. OTEMPORARYUNSAFE BY VIRTUE POTENTIAL ALTOS.BY THE PUBLIC ON I'lust PLANS(INCLUDING BUT NOT LIMITED TO OFF-SITE BORROW OR WASTE INSTALLED WHERE SNOW ON THE PLANS 6. ONCE ALL THE EROSION CONTROL ITEMS HAVE BEEN INSTALLED AS SHOWN ON THE PHASE I EROSION ��� DIVERSION DIKE 309 OF PUN AND THE INSPECTOR HAS APPROVED THE EROSION CONTROL MEASURES THE CONTRACTOR In, I PANT FCONSTR F' AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN VI 318 OUTLET PROTECTION- TO BE FRONDED AT THE OUTFALL OR DRAINAGE CAN BEGIN GRADING OPERATIONS yO� A STABILIZED PAVED CONSTRUCTION ENTRANCE WM A WASH RACK LOCATED AT POINTS R THE OWNER FOR RENEW AND APPROVAL BY ONE PLAN APPROVING AUTHORITY ST TEMPORARY SEDIMENT TRAP 3.13 VEHICULAR INGRESS AND EGRESS ON A ROADSCONSTRUCTION SITE TO REDUCE THE AMOUNT OF 6. THE CONTRACTOR IS RECESSABLE FOR INSTALLATION O ANY ADDITIONAL EROSION PIPES WHERE SHOWN ON PLANS 7. ROUGH GRADE THE SITE TO THE CONTOURS SHOWN ON THE EROSION CONTROL PLAN. MUD TRANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR VON/CIEs OR RUNOFF. CWTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS 3.19 RIPRAP-RIPRAP SHALL BE INSTALLED AS OUTLET PROTECTION WERE 8 PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS CUMIN SEVEN O IIIIIIIIIP SEDIMENT BASIN 314 CONSTRUCTION ENTRANCES SHALL BE INSTALLED AS SHORN ON THE PLANS TO REDUCE THE DETERMINED BY THE PLAN TO DRAIN AUTHORITY. SHOWN ON THE PLANS DAYS AFTER FINAL GRADE IS REACHED TO ANY PORTION R THE SITE TEMPORARY SOIL STABILIZAnom BUT AMOUNT SFEN,-T TRANSPORTED ONTO PUBLIC ROADWAYS 7. ALL DISTURBED AREAS ARE TO DRAIN CT APPROVED SEDIMENT CONTROL MEASURES AT SHALL BE APPLIED CUMIN SEVEN OATS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL T n5 9!T FFNYT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL 33I TEMPORARY SEEDING- TEMPORARY SEEDING SHALL BE APPLIED*ERE REMAIN DORMANT(UNDISTURBED)FOR LONGER THAN 30 DAYS PERMANENT STABILIZATION SHALL BE IP -e INLET PROTECTION 307 A TEMPORARY SEDIMENT BARRIER CONSISTING OF A SYNTHETIC FILTER FABRIC STRETCHED FINAL STABILIZATION IS ACHIEVED. SHOWN ON THE PLANS APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE MAR. ACROSS AND ATTACHED TO SUPPORTING POSTS AND ENTRENCHED. TO INTERCEPT AND DETAIN S DURING DEWATERING OPERATION$WATER NILL BE PUMPED INTO AN APPROVED FILTERING 332 PERMANENT SEEDING-PERMANENTLY SEEDING SHALL BE APPLIED*HERE 9. INSTALL THE CONSTRUCTION MEASURES AS SHOWN ON THE PHASE II EROSION CONTROL PUN SHEETS O X X X SILT FENCE 305 SMALI-AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING CONSTRUCTION OPERATIONS IN DEVICE. SHOW ON THE PLANS MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP WM ANY LAND ORDER TO PREVENT SEDIMENT FROM LEAVING THE SITE AND TO DECREASE THE BE.00 OF 9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND SHEET FLOORS AND LOW-TO-MIXERATE WEWL CHANNEL FLOWS THE SILT FENCE BARRIERS AFTER EACH RRBF PRODUCING RAINFALL EVENT.ANY NECESSARY REPAIRS OR 339 DUST CONTROL-DUST CONTROL SHA BE APPLIED THROUGHOUT THE SITE DISTURBANCE ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES p Q. O CONSTRUCTION ENTRANCE 3.02SHALL BE INSTALLED DONN SLOPE OF AREAS WM MINIMAL GRADES TV FILTER SEDIMENT CLEANUP 70 MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEICES SHALL BE WHERE SHOWN ON THE PLANS PLACE '� LAIN RUNOFF FROM SHEET FLOW AS INDICATED. THEY SHALL BE INSPECTED IMMEDIATELY MADE IMMEDIATELY 10. INSTALL THE UTILITIES CURB AND GUTTER,AND ROADS INLET PROTECTION SHALL BE INSPECTED AFTER AFTER EACH RAINFALL AND MAINTAINED IN ALCNUANCE WM THE VIRGINIA EROSION& 10 ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED,DESIGNATED BORROW AREA EACH RAINFALL EVENT AND REPAIRS SHALL BE MADE AS NEEDED. IF THE STONE FILTER BECOMES SEDIMENT CONTROL HANDBOOK(VISCID II ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA.EARTH FILL STRMWATFR MANAGEMENT CLOGGED WM SEDIMENT SO THAT IT NO LONGER ADEQUATELY PERFORMS ITS FUNCTION, THE STONE MUST TO7 STORM BRAIN IN/FT PRn1FCTION. SHALL BE INERT MATERIALS ONLY,FREE OF STUMPS WOOD,RUBBISH AND OTHER STORMWATER RUNOFF QUANTITY BILL BE TREATED ON-SITE THROUGH THREE PS PERMANENT SEEDING 3.32DEBRIS BE PULLED AWAY AND CLEANED AND/OR REPLACED. INSTALL ANY REMAINING EROSION CONTROL ITEMS A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDING AREA AROUND A STORM DRAIN DROP 12 BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION PER DRY TREA IM TWO BIORETENTI SHOW ON BASINS WITN DOWNSTREAM AS SHO ON THE PHASE I/EROSION CONTROL PLAN. INLET OR CURB INLET TO PREVENT SEDIMENT FROM ENTERING STORM DRAINAGE SYSTEMS CA ZONING ORDINANCE SECTION 5E DETENTION SEE STORMWATER MANAGEMENT PLAN SHEETS 11 ONCE PHASE n OF CONSTRUCTION IS COMPLETE, THE SITE IS STABILIZED AND ME INSPECTOR HAS GIVEN PRIOR TO PERMANENT LETS ARE TION OF THE DISTURBED AREA. INLET PROTECTION APPLIES r DIP CULVERT INLET PROTECTION JOB 1J.ALL INERT MATERIALS SHALL .1 TRANSPORTED IN COMPLIANCE WM SECTION 1J-J01 O' APPROVAL, THE CONTRACTOR CAN REMOTE THE EROSION CONTROL MEASURES NO ITEM SHALL BE Leg WHERE STORM DRAIN INLETS ARE TO BE MADE OPERATIONAL BEFORE PERMANENT THE CODE O ALBEMARLE. REMOVED UNLESS THE UPSTREAM AREAS ARE STABILIZED AND THE INSPECTOR GIVES PERMISSION. STABILIZATION OF THE CORRESPONDING DISTURBED DRAINAGE AREA. IX BORROW,FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL-TYPE PoNEn EQUIPMENT SHALL E") T O9 TEMPORARY DVFRCON MKF 12. MAINTAIN ALL EROSION CONTROL MEASURES AS SPECIFIED IN THE VIRGINIA EROSION AND SEDIMENT BE LIMITED TN RE HOURS OF 7'DDAM TO 9:DOPY. OC /� DUST CONTROL JJ9 A TEMPORARY RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPING CONTROL HANDBOOK,REMOVING ONLY WHEN APPROVED BY THE LOCAL PROGRAM ADMINISTRATOR IN 7 Cr) DISTURBED AREA R OVERT STORM RUNOFF FROM UPSLOPELIZDRAINAGE AREAS AWAY FROM 1S BORROW,FILL OR WASTE ACTIVITY SHALL TV CONDUCTED IN A SAFE MANNER MAN ALLTAHDANCE WWTH THE NRONIA EROSION AND SEDIMENT CONTROL HANDBOOK. L CD ® UNPROTECTED DISTURBED AREAS AND APES IV A STABILIZED OUTLET TO DIVERT MAINTAINS LATERAL SUPPORT,OR ORDER TO MINIMIZE ANY HAZARD TO PERSONS AN 13. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER C'4 SAFETY FENCE 301 SEDIMENT-LADEN RUNOFF FROM ABASIN.DISTURBED AREA TO A SEDIMENT-TRAPPING FACILITY SUCH PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROMEYENT$AND DAMAGE TO ANY AS A SEDIMENT TRAP OR SEDIMENT BASIN. USE WHEREVER STORMWATER RUNOFF MUST BE PUBLIC STREET BECAUSE 0 SLIDES SINKING OR CALAPSE FINAL SITE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED,UNLESS 16.TIE DEVELOPER SHALL RESERVE ME RIGHT TO INSTALL,MAINTAIN,REMOVE OR CONCERT OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM ADMINISTRATR. TRAPPED SEDIMENT AND THE DISTURBED TEMPORARILY DIVERTED TO PROTECT DISTURBED AREAS AND SLOPES OR RETAIN SEDIMENT ONTO PERMANENT STRMWATER MANAGEMENT FACILITIES*HERE APPLICABLE ALL EROSION SOIL AREAS R£SUL DNG FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY M TEMPORARY RIGHT--R-WAY 3.11 SITE DURING CONSTRUCTION. THESE STRUCTURES GENERALLY HAVE A LIFE EXPECTANCY O-18MAINTENANCE UN T MEASURESON THER PED BY THIS PLAN REGARDLESS OF THE SALE O ANY LOT, STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. N H DIVERSION MONTHS OR LESS WITCH CAN BE PROLONGED WM PROPER MAINTENANCE PIT,BUILDING R DRIER PORTION O'THE PROPERTY ,LLr TIT TEMPORARY SFOMFNT TRAPIN GENERAL,WRING CONSTRUCTION THE RED R CONTRACTOR ON-SITE WLL CHECK _ -_____._._-_.- _-.__-___ I 17 1EMPRARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING SEEDING IS TO w A TEMPORARYEOWLET P 0 DE AREANFORMED LA CON UNOF FROM AN EARTHENLL EMBANKMENTWIN A ALL EROSION AND SEDIMENT CONTRA MEASURES DAILY U AFTER EACH BE AT 75 LDS/ACRE AND IN THE MONTHS OR SED7EABER TO FEBRUARY TO CONSIST A ENOUGHOUE TO THE MA ORITYENT-LADEN RUNOFF FROM SMALL DISTURBEDUSE AREAS LONG SIGNIFICANTEED . RAINFALL.AEN770N WILL REPORTS KILL BE REQUIRED THE RLD IF TO ALLOW MAJORITY OR THE SEDIMENT TO SETTLE OUT USE BELOW DISTURBED CONSIST MIX OR ANNUALLR RIEGRASS AND CEREAL TR RYE OR IN AND TO NEEDED. SPECIFIC ATTEN DON BE GIVEN TO THE FOLLOWING ITEMS: ALBEMARLE COUNTY CV Q S CONSIST OF ANNUAL RT£,OR MAY THROUGH AUGUST IE CONSIST OR GERMAN MILLET CONSTRUCTION ENTRANCE O AREAS*HERE ME TOTAL CONTRIBUTING R 1 AREA IS LESS THAN 3 ACRES WHERE THE D.SEDIMENT BASINS AND/OR TRAPS RILL N CLEANED AND MAINTAINED INB iii - TARLL V„y,A SEDIMENT TRAP INLL BE USED NO LONGER THAN 18 MONTHS,AND IT MAY BE CONSTRUCTED STRAW D BY IS TO APPLIED OATN CO CONTROL INSPECTOR.5F. RNAnVES ARE SUB.ECT TO CA p� SACCORDANCE WIM THE VIRGINIA EROSION T SEDIMENT CONTROL HANDBOOK DINER INDEPENDENTLYTEMPORARY SIMIN IN CONJANCTION WIN A TEMPORARY DIVERSION DIKE PERMANENT ED S THE COUNTY H LLION w CV III PERMANENT STABILIZATION SHALL BE LIME AND FERiLIIDR,PERMANENT SEEDING AND b.SE INLET PROTECTION AND RAVEL QUIETS GULL CHECKED REGULARLY FOR ADHESIVES MD FOR DINT CO.NiROL T t4 7PORARY B RBER T DAMML' CV W - A TEMPORARY C NSTR C OR AN B A CIO OF COD ACOIMWA7LR ACROSS SE STRUCTURE MULCH.ARICULVIOAL GRADE LIMESTONE SHALL L.APPLIED AT 9A L BE APPL SEDIMENT BUILDUPITHATT. GULL PREVENT PROPER DRAINAGEVED IF THE RAVEL IS W WOO .Appl,alkm 10 BY CONSTRUCTING AN EMBANKMENTS COMPACTED ACROSS A ORAINAGEWAY INCORPORATED INTO ME TOR 4-6 INCHES ID SOIL.FERTILIZER SHALL BE APPLIED AT HOGGED BY SEDIMENT, THE GRAVEL GULL BE REMOVED AND CLEANED,R IT GULL Ir•' Damns Type M A.:e TO DETAIL SEDIMENT-LADEN RUNOFF FROM DISTURBED AREAS IN-NET'AND DRY-STORAGE 1000TLB5/ACRE AND CONSIST O'A 10-20-10 NUTRIENT MIX PERMANENT SEEDING SHALL BE REPLACED. 1.13d00 _z CALL SILT FENCE BARRIERS WILL BE CHECKED REGULARLY FOR UNDERMINING OR _ Almcs� Ld CYMM1 Nark Gall®;Acv DISTURBED ENOuGH FOR E MAJORITYH O ME SEDIMENT TOR SETTLE OUT APPLIES BELOW BE APPLIED AT RYEGRA S ORANDK LON95T BLUEGRASS 953T KEN iT Mi C TAU EIE AP ANTI •�P a -• _ Z EATERAREAS WEEAE ES TOTAL CONTRIBUTING RANT S AREA/S EQUAL TR OR AT 8 PERENNIAL ALTRAAT R KRE SUB, CTTO STRAW MULCH O TO BE APPLIED DBETEEMOVED OF THE FABRIC AND REPAIRED AS REWIRED. SEDIMENT LF SHALL w GREATER THAN FOR THREE CONST THERE MUST BE ORARY UN AND APPROPRIATE AT /100SI"ALTERNATIVES TIVOs ARE SVB�ELT ID APPROVED BY THE COUNTY EROSION REMOVED EB THE LEVEL R SEDIMENT DEPOSITION REACHED HALF WAY TO PVDUP'Ptd SIDE ELEVATION ARUECM¢ma Zw A,plo TOPOG RAPHY THE CONSTRUCTION O'A TEMPORARY IMPOUNDMENT MAINTENANCE.CONTROL NC INSPECTOR.LTHE TOP OF THE BARRIER. PISMO A1pbJt Etrmmpn 71 Csrse SPIRY LTIMt 11R WnFi PROTECTION' 19.APPALL ALL MEASURES ARE VI BE INSPECTED WEEKLY AND AFTER EACH N.ALL SEEDED AREAS WLL BE CHECKED REFERTILIZED REGULARLY TO SEE THAT A GOOD STAND °1°PP J CL STRUCTURALLY LINED APRONS OR OTHER ACCEPTABLE ENERGY DISSIPATING OUR AT PLACED RAINFALL.ANY DAMAGE OR COGBNG TD STRUCTURAL MEASURES IS TO BE REPAIR IS MAINTAINED.AREAS SHOULD BE FERTILIZED AND RESERVED AS NEEDED. LMa Ea.= 125:1 F.Spray 2,5 AT THE OUTLETS OF PIPES OR PAVED CHANNEL SECTIONS TO PREVENT SCOUR AT IMMEDIATELY SILT TRAPS ARE TO BE CLEANED WHEN 50X OF ME NET STORAGE VOLUMETHE PRIMARY CONTACT FOR THE PROJECT WU BE TIMEE RLD Tc Mx E.a�s > Q STORMWATER OUTLETS TO PROTECT THE OUTLET STRUCTURE,AND TO MINIMIZE THE POTENTIAL IS FILLED WM SEDIMENT ALL SEEDED AREAS ARE TO BE RESEEDED WHEN NECESSARY OR CASE OF EMERGENCY, r>✓I>E •ai P.a'T O _ Re.m R.mr 1'1 F SV¢Y AT CONTRACTCONTRACTOR ADDITION CONTRACTOROELL MAY DETERMINED D.THE MR. THE _ - FOR DOA TERR FLOWS EROSION BY LE TO THE 01 LE20CTY AND ENERGY O CONCENTRATED CHANNEL C LECTI G A GOOD STAND L F GRASS SILT FENCE AND CLEANED DYKES REPAIRED ARE YL . /S NAWARDED.MPLIN THE CT. THE BE CONTACTED, OBLE n- - Cl) TZ AaNK PmuWas SRMNWATER APPLICABLE TO OUTLETS O'ALL PIPES AND ENGINEERED COLLECTING SEDIMENT TO HALF MEP HEIGHT MUST BE CLEANED AND _ IJ,I fNm.T¢IBci TI Come Spray asli SECTIONS IMMEDIATELY FOR SITE MAINTENANCE OF THE PROJECT, DINNER PILL BE RESPONSIBLE J T j9 RIPRAP 2O ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE TV BE REMOVED oaT.tC Acrylic Emulsion A PERMANENT,EROSION-RESISTANT GROUND COVER OF LARGE LOOSE ANGULAR STONE WM WMIN 30 DAYS O'FINAL SITE STABILIZATION,YWCA MEASURES ARE NO LONGER NEEDED, PMEMEM �N __ fD.6 1 35:1 Coupe Sprat 35D FILTER FABRIC OR GRANULAR UNDERLINING TO PROTECT THE SOL FROM THE EROSIVE SBJECT TO APPROVAL BY ME COUNTY EROSION CONTROL INSPECTOR. \ O w L L FORCES OF CONCENTRATED RUNOFF,SLOW THE VELOCITY OF CONCENTRATED RUNOFF WHILE 21 THIS PLAN SHALL BE KWD IF THE OWNER DOES NOT OBTAIN A PERMIT CUMIN I YEAR O- o ENHANCING THE POTENTIAL FOR INFILTRATION,AND TO STABILIZE SLOPES WM SWINGE' THE DATE OF APPROVAL(WATER PROTECTION ORDINANCE SECTION 17-204G) ...AA RAROWN 0 AT .t.a.aav ZQ. Z e S¢M¢.VA DS3NC PROBLEMS AND/OR NON-COHESIVE SOILS USE WHEREVER SOIL AND WATER INTERFACE AND 22 PERMANENT VEGETATION SHALL BE INSTALLED ON ALL DENUDED AREAS CUMIN NINE(9) tVA x�1IR PIAN NF'N c 0 -• THE SOIL CONDITIONS WATER TURBULENCE AND VELOCITY,EXPECTED VEGETATIVE COVER,EEG. MONTHS AFTER THE DATE THE LAND DISTURBING ACTIVITY COMMENCED.(WATER < < ARE soot.,THAT THE SOIL MAY EMArt UNDER THE DESIGN ROW CONDITIONS PROTECTION ORDINANCE SECTION 77-207B) DAMS IROD RAT OF I W = I . U 1 T II TEMPORARY 4FFR/NGKswTa '= TOOL THE ESTABLISHMENT OF A TEMPORARY VEGETATIVE COLOR ON DISTURBED AREAS BY SEEDING SOIL DESCRIPTION TY w I 0 E a atlmL S�LLI s uKL �� WM APPROPRIATE RAP/AY ROWNC ANNUAL PLANTS 70 REDUCE EROSION AND ¢-- mow Pupe 000 I LL,I Ty SEDIMENTATION BY STABILIZING DISTURBED AREAS THAT RILL NOT BE BROUGHT TO FINALWE OF PA1mrt M GRADE FOR A PERIOD O-MORE THAN 30 DAYS TO REDUCE DAMAGE FROM SEDIMENT AND 718 -RABUN CLAY LOAM-2X TO 1%SLOPES SOIL IS WELL DRAINED, WM fie, P VR LWOACI n FESCUE 12B Les. MORE MAN 80 INCHES TO THE WATER TABLE. MADE FROM RESIDUUM �RML..�.,.-e.J.-e..�..c.�+rew, E RED TCP GRASS 2 tls RUNOFF TO C EAM OR OFF-SITE AREAS AND 70 PROVIDE PROTECTION TO BARE SOILS WEATHERED FROM REENSTONE THIS SOIL HAS CONVEX DOWN AND W EXPOSED DURING CONSTRUCTION UNTIL PERMANENT VEGETATION OR OTHER EROSION CONTROL C p l SECTION A-A L SEASOx1L MFIQ CROP II 1I¢ MEASURES CAN BE ESTABLISHED.ONMODERA WATER SIHAPE. NO FREQUENCY OR PONDING R FLOODING IllIII I--I 'e �� 150 Igs 3.32 PERMANENT NTAruURAE MODERATE WATER CAPACITY,AND MODERATELY HIGH TO HIGH KSAT 01 IAM¢I•r e THECSE ESTABLISHMENT OR PERENNIAL VEGETATE SEDIMENTCOWER ON DISTURBED AREAS BY PLANTING RIM A UMW tusN ILOO:Pr w�S ? Z w =c SEED. TO REDUCE EROSION AND DECREASE NEW FROM DISTURBED AREAS TO /\ VAT1H to THROUGH M11L11.1I0. r.ADL EDTHIGH CLAY-TAT T, 1O SL 0OIL/SHELL RAINED.ROTE TABLE N PAVE TEMP CONST ENIR CI) QCr) w 3 WY 16THR MOUSE 15 NRDA RYE PERMANENTLY TI STABILIZE EL AREAS IN A MANNER PRO IS ECONOMICAL,MATERIALS 7D 72C3-HIGH TOE HIGH PONDING MORE THAN 80 INCHES A THE TER WATER CT NO Z AUMSTROMI 0 THROUGH COMERINTER RYE SITE IMPROVE WI/RI AND ALLOWS T SELECTION NA URTH MOST APPROPRIATE PLANT ON TO FR RESIDUUMSY OR FLOOD/TUG MODERATE WATER CAPACITY,MADE ALL x0,99R WWII FEB..BRLRRM 15 INTER R1F CONSTRUCTION TII A HABITAT TO ENHANCE NATURAL BEAUTY UPON GE/AfERCW OR FROM WEATHERED FROM OREENSlONE. 9 �R NOTES. 219 STCE ACTIVITIES ALL AREAS NNl RECEIVE A PERMANENT VEGETATIVE COVER. -' W - T T9 O/GTCONTROL' REDB/pNG SURFACE AND AIR MOVEMENT OF OUST DURING LAND DISTURBING AIMWRON AND RABUN CLAYLIST TO 25T SLOPES SOIL IS WELL RAINED,MODERATELY ''•"�!•' ! w Z o I DOE ADD APPLIED IN NEEDS ANCLL BE DETERMINED BY SOIL :j:,-a •i - 1E515 AND APPLIED IN ACCORDANCE MIN NEeC1 STD ].32 CONSTRUCTION UR ACES TO PREVENT SURFACE AND AIR IRBORNE OF DUST FROM 7203-HIGH TOE HIGH PON NGMOREOR THANO DI INCHES A THE WATER TAI NO i.0? 'L,1/' LU _ EXPOSED HEALTHTHESUBSTANCESCAPACITY.HAZARDS TRAFFICLLBESAFETY PROBLEMS OR HARM ANIMAL OR PLANT MOVEMENTLIFE. FROM RESIDUUM WEATHERED FROM GREENSTONE. !'t"=•1-• OF SEED APPl1CAl10N,IN ACCORDANCE W/VESCN STD 3.35. II ••'!•,'� � _ DUST CONTROL MEASURES SHALL EMPLOYED TOD SHALL B SURFACE AND AIR THO `'�::-'•-'• -- -DUST DURING CONSTRUCTION.MEASURE'S EMPLOYED 9/ALI.BE IN ACCORDANCE WM THE 'Cjt.e :; - (I) 0 PERMANENT SEEDING SCHEDULE WPM. ELM !'`� TARIr. 1.• r PS NO SCALE I SET POSTS AND EXCAVATE A 4X4- 2.STAPLE WIRE FENCING TO THE POSTS. 3. ATTACH THE FILTER FABRIC TO 4.BACKFILL AND COMPACT ME 0 (STD &SPEC. 3.32 OF VIRGINIA EROSION& TRENCH UPSLOPE ALONG THE UNE THE WIRE FENCE AND EXTEND EXCAVATED SOIL L. ACCEVTARLF.TLMPORAR1 SI:L.OI.OIIA.T1IAM/1/1T W W S SEDIMENT CONTROL HANDBOOK.3RD ED.) OF POSTS IT INTO THE TRENCH. I VEICW REFERENCE FOR ALL REGIONS CC a L+ ��� 4F- *A t'�_�.R�. .- _ I .r-:•.• .. ••••. • -W! n�Rm�aes sum t .I 0 Q R. 5 E III .,i4,i,q��1d1 a "• R M i 4 4 I. 41 OP IN L i -T ��O r •• (� ` J / I �. al WB►ill II in IS 0 AI 11 / ` a IR B. IS / t ••• ••• rs • Sept, T.m L s/ Mit . 11M SECTION A-A . . .. A R o rRs �in \��ill'1 -�`•111 „N♦`s 1// A. !1 // 91MjR:.�a v. PPE wTieT TO RAT AREA MIN No WEED CANNEL �„ 4,-,..-• • • UWium 11 moon. 00l r G _A `ii I i� ✓ 1e / ♦ 4* / . ��,� • •. • A 50 11M u �a LEDs - 1 ( �/'�- @tea7 m -� ••-LA-.-•• - e a / K N G L� 11" / /1. �lo'�" 5�V� - 'I T I CONCRETE ADO( • ...�.•i.1 Se k t./ tD /// / . /� P 0 - Wes ` `• `4.L•A _ / 1 , FLOW / __ • • • •• ••TI •. FED t6 Apr w ro ;o . - / / CRAWL*RIW '. I ••/ - •, fAldwmaWPDDUOm1 Y m-Lun DOB NO e e L FLOW� a a DONNE AQTlT A E ...! •- -% •. ELM 092033 May 1 Aq 31 C M"let 50 r........ IP BLOCK&GRAVEL CURB INLET .07_ SECTION A-A -� `4� •,.•T SCALE 4 £XOENSION R FABRIC AND WIRE INTO ME TRENCH. O SFOIMFNT F7!7E(� SILT FENCE �� „O SCE O per oU1LFr. nrnnNs 1"=50' NO. sF (IMTH WIRroE SUPPORT)LL son¢:Va. SHEET1 III o R. e (�TEMPORARY T:4'DIVERSION BERMa y //f�1 ? - . LEGEND LEGEND , \ \ ;II \\\� ..\i � _ --- - SILT FENCE PER VEwr 3.05 pF �5 1 \\1/ •\ ,,//� `~ i / r/ LAND DISTUR(L1NCE J L l y ® I i` e >>�\ � DIVERSION DIKE SUPER SILT FENCE PER VESCH 3.05 Opp yy j� • ^V ` } A„ • .�' '/ \ Y� \', / BOUNDARY LINE (. �` t r �. a / • X X DIscoN R 35791 . J `o+/ +� �` 1 ! , w PE" // •!`.�/�l �, %r \ti •\ r - -- SILT FENCE DIVERSION DIKE PER VESCH 3.09 /* ,/`. '.s \e\. As'>4.�L f i I`! et- / / •\.•:., i.•r / / DIRL{itON OF ROW © SEDIMENT TRAP PER VESCH N. Y ,F %•`C i' s�••- ' \ y.� � i { / �+,' ; t 4.'1" \� ♦ ,'i// / DRAINAGE DMDE a CONSTRUCTION ENTRANCE PER VESCH 3.0] 7T W \ t • 'N/ u / 3.7= PROPOSED CONTOUR q�y�p_ may\ • • �i E am. �"�. a ���C°a, / , • ,/ �'��� t`�'; �t\; _r ; c.. - / "CLONAL LF Ajj�'� v c Y e r.1DT X I-°' \\� <•`'�/ / '� \ \ CULVERT INLET PROTECTION Q OUTLET PROTECTION PER VESOI 3.18 v. /� x'`C ,y,,�(+y 7 flk, � .', ' /// C) CULVERT INLET PROTECTION PER VESCH ' ( �a / - /= /�'E { a, / / i J.`x �a' I {�'. • �.y��`.. 4u / , \ SOILS LINE ------- DRAINAGE WAY ® SOIL STABILIZATION MATTING VESCH 3.36 'vl/{ / \• ,�.\4./ •f� // //, ,a y. strum m...,>w.n.,.n.a p.I,. J N. \\. � \ ,% \\. SAFETY FEA'CE I LIMITS OF DISTURBANCE r. \\: h, \ y\ �. `ir ,_ ��� '/ ,/ =12.20 AC. _ 11.z....Ir., sI A \ u Is P ' ` , w,J(,/ I• - '`2 `/ / / ,I 1 I YI IfI I 1_ _. . \ _ di OFI F S I \'` _ III) T / t N# y{y,� ,\\ `:., ,/ - - PROPOSED SAFETY FENCE fi` 1 T' w �.�i \ V[[ N - / 7-, ./ y'6n. _ \ - _ SIGNS'WARNING: � q� x is ,., 0•I rE7 WICK SAND.KEEP OUY : i ,1, •A�,, mprNc < i `BJ' \ `L �i EX 5 TY... t is t s ,f; F c wrtxw� Si) o �> \ ` / � : s ::::-.),,elicillU. \ PROPOSED 55'EARTHEN r. :1` t t t t .STY: •`",N'rbY/ Dt I , / ' "k1 : 'w:! (•'. ._e •_ r �/ a ERGENCY SPILLWAYt./ iii st Ste>: •'�„x ''•t',�rii fip‘ \ \\` / • ' - PERSNELTIVF NEWTRIODL•C o-Tworrhe MM. W `- /// '- // '4'''. q -_ '/ `- %—ter -tr "\ ace ae ewr i ' iww mia / ILI itIN: 444140, - _ ICJ'.' \\ d .Rq. N rt' -° i�• \ C--- _ "`�' tY ' ', el - w..Nz ^- � / \CONSlRUC710N ENTRAN r •� `► '' k. -�..I \\ `,� .yy • ,,fox.--- ,t, _ _ _ �i M e ' * 40 SECTION -A / - z / - SE A `\ N _.. ,.�„4T�gq\�s •\�� •\ ENASICC FEN VIEW PERSPECTIVE VIEW ' ,' , / Y\ Mi' - r ` \'. PLASTIC FENCE METAL FENCE \ - t- IA.:-`000 - \ PROPOSED 24•CAL-III• n 1 c- -- ' / . `� J � RCP BARREL Sonic Mooed rta.oc•=I.Nn =e P•N amt MINIw N.aA.0 w V. •-P Iuil..I,�.,a.Iv.,.. / ROW OIVER51. S.. �� -84'; S-o.s>< ` IOTRaE,PE>,mw-mm,mt ram.�:.N- N a g t / �\ S' �' --- • \ PAVED WASH RACK WV OUT486.58 m s / , "�' / r:.. .— t •ROP III R RISER - - / - -._ • RIM=493�92�• ` \. STONE WTD( INTO BASIN \ ,n S. ' •�` 01 • PROPOSED 24•SIWR$ION :a- _ .---- - 0 / A AA v SEDIMENT BASIN 1 / _ /' - 7 PHASE I - \ — M ,' 7 22 ACRES I i N \ \ �w \ U. w / EX STRUCTURE .., _ . I Tc- min '�, \ \• ``w \ , I / TO BE REMOVED TYP - I \ N \ w,RovosED 24•DIVERSION BER G , r\. I a _ A �► Q, w w EX STRUCTURE - ` / \ / J. \` N Z o3 • TO BE REMOVED(TYP). _ N % / 410111°'-'-' 4fr -___ LIMITS OF DISNRBAN• ; ' ° / /•./ // %I Z .1 CL Et -12.20 AC, _ `^ .\ '/ a / ' ' % 0 l`/ , , A* , / \ \ ., 1 OANDS _. / / w Ap W \l CC • e / .47- \i\' . ' / N E: v/ -V: EX OHE // / / i w W , 4,, .. , i .:, , A \ • Kit?\_,T 0 BE REMOVED(TYR) Z' C1 '� 'ROPOSED 24•DIVERSION BERM% jf / \ -^ L� � D > O/ EX STRUCTURE / \ F 1OFDISTURBANCE, ' -. - 7U) W/ 0 BE REMOVED(TYP). G. �� PROPOSED 30'CL III REP RISER -1j.20 AC, / - ` Q �N/ /`� `\ \ / / RIM=495.70 '- i / , /y it / } ~ LPL c / �__ w / i _ J w / . li 1 /l 5Gp pV ?2 \ \' o- ' ^ SEDIMENT BASIN 2 - ... , \ PHASE! { '. -. j--- E€ '' a \\ .: 1.,. ' 3.28 ACRES c - -. /_-_ . J / w 0111 1 IIII ''mp/ v ® Tc=9 min �- /P �v• PROPOSED 15•CL III RCP BARREL -BO'; 5-0.57G E �+ /f'' ® \ `�, INN IN-486.00 ' _\ Q _ 1 \' / / l _ Il�R1' �� NV OUT=48s.80 /� \\ . Ur o o �' \ '�- / : /PROPOSED 45'EARTHEN CV c GRAPHIC SCALE V ! 7 ERGENCY SPILLWAY / a \ j ELEV�497 75 $' c \\ / 308 NO. Le 8 _ a" / 092033 WI ,non so L \ (IN FEET) ''\,. ` _- / SCAIE w ,,, , ,, �/ 1"=60' t '\\ �\ \ _ t/ - PROPOSED SAFEWARNI G a 7 y± -• NSTALL SIGNS WARNING: SA SHEET NO. 1 QUICK SAND,KEEP ODY 9 `o ' + r �r ! ` v 3 LEGEND LEGEND \ /} t . } , )"..\'\,\ / SILT FEND:PER VESO13.05 F l .=� ` F• ,p �. ` I \ y \';, LIMf75 OF LAND DISTURBANCE © L ,fit ` +, �/ ,♦ "�'� r I \�'\ ,\ F r J �. s\ /' • �.- ONERSION DIKE t}!: O 'f� 1 `,, , [ /�,. BOUNDARY LINE V SUPER SILT FENCE PER VESOI3.05 ♦,�� Z 44 , SILT 3COTT R COLLINS'Z � '.,,,A (�' a /-*, DIVE2uoN DIKE PEa L•Ew13.o9 v f ♦ \q• f f I�• s X X X p �' \ ! � 'p. / / / %� a �� � �\\���f� /���_.. -� , �- DIRECTION OF FLOW © SEDINEM TRAP Ka VE5013.16 NO 35791 A `t, s i ~' ,. 4Y /y,� \. �l t•o �r CONSTRUCTION ENTRANCE PER VESCH 3,02 q 4 y\ lj a' Y -1, \ ♦ £ —653.75— PROPOSED CONTOUR © •0� „4.1 � \'1'i � Y..� t , .\e '. / \`tit \ \ _y't DRAINAGE°AIDE 3,, / \ \ ,. \ / ,r ,,' /`a TONAL • w i, j� k. yy ♦ `\c ��[.�' f \ �' r - �•- CULVERT INLET PROTECTION `u') OUTLET PROTECTION PER VE501 3.I8 le '! \: �/. .'�Cj `�'.\ !< • \k�\ • \ \ jV� CULVERT INLET PROTECTION PER VESCN 3.08 / 4 \ CIP >. '`O` � �, \ . 1♦ s' w — SOILS LINE _ • ♦�. f a SOIL STi1BflIURON MATTING VESG/3.36 „'t / _ / / DRAINAGE WAY a4A-10// '- � A 1 i �� � '. � '®�. � S✓ -..f � Y.� ♦ g��.� -ter. ,� �• "\♦ . �. ....f A /A /:: v. \ OF DISTURBANCE \ ' �\ .� / �. '/ -EATS -12.20 AC ,_-,,..., 0 . ` " / / `� ' \ ~.•.��� • i ;I III j �\ - t/ ' . �1 Y- .V.`i ' � PROPOSED SAFETY FENCE v' I u - ` �,. �. `' �.�yr • --t— �- •�a NSTALL SIGNS WARNING: ® a " �'.e s>;ii F / '- .\ --WICK SAND,KEEP WY 'E' ty (� // / �.\\�\. [ w\I" �A � Y^ _ � \ \ _. PROPOSED 55•EARTHEN O 2 `� ' 0,*��'',��`y. , - �' E��TP� S1NAt FA �� \ a ERGENCY SPILLWAY S ELEV /, \\ ; / / j' gp'Q\t"i" ,1�1'r}i{ .y' d'�� \�`V.. ._• 3 5 � •_ .. * =495.00 _ / cc ,/ ,/ // f/ ;set\,R A / �F4. ®� /t W v / 4,.. 4"s RCP BARREL II _ ' VI \ / ` , °ems',e.'afsf ���� �� =84.: 50.5R' `-�.,�C P ,� �r®� ♦� _ - INV IN_48700 - �.� its �7 0 �wN4`S * INV WT=486.58 1 , ,i 1,P44:40 � / ��� \ , -M-490.D 36'CL III RCP RISER ,A/ , ` \� RIM�493.92 ,k1.* w ,Nel "'IA 0 '' ,, 0 ‘— cn &jitto.„,,,...../4,_ -,..o,,,,,,-7 � _ 7"," 8 \ t4 .�y SEDIME BAST `` • it \\\ L' ' 7:: _:- ► q\v�t���,�®�/le1.</ 4 94ACRES `P\`�/ '•w \ \ \ \\ . ` N / i , y; TD=9 0 min CO lI A ��e, \ \ �� CO / j5 i `�47l. 7it*/ f�d'i' - / em �`, \ \ . :,Iel�,°lip �d �.ra' 9A/ N ��'�a%�� ►'! �'� ° ® �,o'er'' ® ` %�� W Ill 6 ��r \ WITS OF DISTURBANCE / I :it; 41104. a,f, �r a ' 4...1:,7440,4X,43v 0 / , /• // Z { ... 68 4h eit., ,-.V. we, (10,40. 0'4 / °�'// ' ____ \ , \ : co a o6 i �/,,A/ /0 , ,,, 4,,,,-;:..../i7 ��-// • ;R OSEDSILT FE CE li oio Y • \ � G /1 6%0Z.V/ ,.., ,,,- `° OWNSTREAM OF ROADWAY Q Q g- �, ae�� `,*A1, �' / -\ \ ,/- �\ / // /,' .-- � IMPROVEMENTS O i; f,,1400#",�� q 0 ,� , '®; �►,+� '�°�jitor ;; /• // \- � . ,— Y w a J • „, — i ' .--''' .‹.,, fitif ♦ i= DISTURBANCE fA '_ / h -ROPOSEO 30' IR RCP SER _1p.20OF DI � Z U) w 3'I,. O�►� I� RIM_49570 '�' 1 % �" _ T a �./ `' ` !a ��\�I m s1t..® f i rr si' � �� w Z g �� uq \� �w � SEDIMENT BASIN 2 �ifJ��.. `�®' �i��+�-4 ;/ LE �P� ..' ��-' 5//' 'fie \ ---_ w PHASE II �w���•AA��� / i�i��. t. �� ScO- -- / o 5.16 ACRES a •- O �E \ L ' Cw_0.45 r t � ' 5 5 RO /l - Or e- ` .\ . \' T\72.8 min °r���a -i �,J / w 4 -'I I I VA v :� ,�� °Nti���� - o /�� Z:�� PROPOSED 15 CL I�CP BARREL;.. :17 � _ i' 80 S 057G ';!. \ * V �� \INV I - / �`�� ' INV IN=4813.00 \ \ , O Q 11 ._. _ ,,, , , •, --4it '/'`, �f �1111 -� NV WT=485.80 d / •...-• • ------, 7---.'-- - - - ------ ‘ ,, , . - f_ ,,_ GRAPHIC SCALE �I►\� / et N ' v e�� PROPOSED 45'EARTHEN - w _' \ , ,�VI �I ` J!_i /' ERGENCY SPILLWAY , / _" s \ w 7 75 k .. ELEV,49 g • 1 Inch-o�tl \ �� '` I.,� �J/ / /�' / ' SCALE\\} ���jy/�6 / 1"=60, =x v � `p � 'a �' PROPOgD SAFETfFI'NCE - - - SHEET NO / 'NSTALL SIGNS WARNING: 10 -4,4_� WICK SAND,KEEP OUT" `o TH OF Dr 0sCOTT R COLLINSZ CO No 35791 :2 SEDIMENT BASIN SB-1 %' SCALE': 1'=40' 4`ozONAL eC'. . Sediment Basin*1 DesignIID ' PROPOSED SAFETY FENCE "r•""� .puma OF 00OPCY \ `r_ NSTALL SIGNS'WARNING: drainage area(acres) 722 sµ yyr rarzl , QUICK SAND,KEEP Our basin wlumes.(using 7 contour intervals) m-'"t10"°�'� \ .. \\ C. ele coon(ft) contour area(sf) WWrte(cy) �>:�1 TRASH RACKS TO BE INSTALLED ON ALL ` \ -\��y 488.75 2686.0 0 �� ORIFICES PER 515 ORIFICE COEFFICIENT ENT 0 gMH NICAL BULLETIN#7 515 PROPOSED 55'EARTHEN 490.00 3604.0 1451 _ \ >ERGENCY SPILLWAY �� �. 492.00 5443.0 4778 ELEV.495.00 494 00 7573 0 957 7 �� '`\ 495.00 8732.0 1259.4 v•savor ..,,_limos�a ' • - 496.00 9952.0 1605.2 _ �� ��` ��� "gym► _. .°,.°./Kn, 510 510 �� �� ��� \ Met sroraoe' z `� IIV ' � � wet soxage regtored(cy)(67'DA) 483.7 design high water(ft) 495.W PROPOSED 838-CL.III R�RISER RIM �/► devatering orifice elevation(ft) 491 BB lop of dam(ft) 496.00 505 ELEvvgtTEx"TRASH RACK 505 r• m ` �_�- `` wet storage provided al this elevation(cy) 484 0 bp width a dam(ft) 10.0 1 S OEWATERMG ORIFICE WT TUBllG=491.BB 'Z o i Qi .."---> - \ available volume before cleanout Icy)(min.34'DA) 245.5 bottom a basin(ft) 4B8.T5 CLEANalTy9o.41 \.. \. \ cleanout elevation(ft) 491 88 approX bottom dmensons: 47 87A1' _ O ; k' �/I� 1 distance from cleanout to orifice(ft)(>1') 1 43 upstream face slope' 3:1 1.4 Foy 5 w r i � �� ••f� :. i� `�` downstream lace slope 3'1 Q' ROPOSENCY s%WAY CREST�' �` � / �. ?� dry storage. 500 500 RGE \ EIFv•4ce Oo' \�\\ a, ' dry storage required(cy)(67'DA) 483.7 baffles' t10 ..... 10.WIDE TOP OF DAM _.___.. _ N N i �, `'� PROPOSED `.�� principle Sp NYay crest(ft) 493.92 length O(fl0r/L(ft) 149 PRE-TREATu 65 WIDE GRASS 11NED tb \ , dry storage provided at this elevation(cy) 484.0 affective width,we(ft) 51 a w; _- t_ _ .. ELEV5495.00 ILI .!. diameter a tleMaterlrg orifice(in) 5.0 L/We(baffles not required if>2) 251 s�® \ diameter a fleable tubing(in)lori0ce+2") 7 0 • V colors. YES495 495 PROPOSED 24'CL III -\ 0 depth of water at spiMay crest(f0 5.42 • CLAY CORED DAM KEYED INro \ RCP BARREL C(use 0.45 for bare earth) 04$ oboe of upstream lace(Z 1) 3:1 h� THE EXISTING GROUND WITH 1' • I� SCARIFIED KEY FOR SOIL ®� -#4', 5-0.51C k(min) 13.2 slope a Darrel(Sb) D.50% ` COHESION AND B-TOPSOIL MIN. oe INV IN.487 00 12yr 3 7 02yr 12.0 length of barrel in saturated zone(Ls) 33.18 INV OUT-48658 I2syr 5.4 CI 25yr 19.3 number colors required 2 4904. \ 490 -_ principle 90iMaY dimension of colors 3 7Xi.r • •ROPOSED 36'CL III RCP RISER available heed(ft) 108 emercencv spillway YES 11 "' '" RIM�493.92 diameter riser(in) 36 required capacity(02SQx)(cis) 0.0 BASH tvBOTTOM J �r SCALE. WIDEE.CONC R FOOTING (RISER �' . > ., , spillway capacity.O(a#) 30,00 baton width(ft) 55 485 4SB.Ts SHALL EXTEND e•INTO FOOTING MIN.) , 485 diameter trash rack on) 54 slope of east channel Mgt) 33% V:1"=5' I barrel length(ft) 84 mnirnlm length of exit channel(ft) 16 H:1"=SO' 024-CL III RCA BARREL IX 10'6NerARY PROPOSED RIPRAP ENERGY head on barrel through enbankners(ft) 8.75 crest of spasm,.00 496.00 482 INV IN:4a7.0: SEWER PIPE DISSIPATER OUTFALL 482 diameter of barrel(In) 24 INV OUR 495.66 vwT"u.L"v,L.A I L.4';SO.50% RIPRAP WIGEO ABRIC ■A O� UNDERIAYMENT LN V W W Q S ,, 4 •61:W2.10%D.A. w 2 rT{rTG u� co 10400 10+50 11+00 11+50 12+00 12+50 13+00 13+25 Z C N SEDIMENT BASIN i N- v LL _, J N Q SEDIMENT BASIN SB-2 (� 8w w SCALE: 1"=40' N 0 26 / Y /p - Sediment Basin#2 Design > z • "'••.......,roman 4r•Rrrwar TRASH RACKS TO BE INSTALLED ON ALL ORFICE3PR w o drainage area(acres) 5.16 ORIFICVSMH E COEFFICIENT BIIT•FS I. n (using 7 contour intervals) °F rwv r5Tn 510 owPKE coEFHI(AENr.o.e 510Z - d Z ;• basin volumes a O e€ / elevation(ft) contour area(sf) wkene(cYl ��1 > O / ` 492,00 4165.0 0 ��� u) V INV �5'CL III RJBARI 3£ PROPOSED 1CP-- - • / _ 494.00 81370 379.2 "„ n ,n RIM �j,l .- NV IN=486.00 498.00 84870 918.5 Ire ELI PROPOSED W/HANSONCCONCRETE 5.60 497 00 9875.0 1258.2 w' saw -_ 505 -VORTEX TRH RACK 505 Z �/ / • ��•oL j 498,00 114120 1652.1 41DEWAA>rtRIN92G6ORIFICE WR-TUBING.94.00 O (n W c 1 �' �1� ` % 499.00 12903.0 2100.2 n J W /' ♦ / r_r - PROPOSED m WIDE TOP Z Ct 7. ' i , OF DAM ELEV 99 `I LL Q ., y / atom 1- `V I `® 45 WIDE GRASS LINED500 Q �Q/^� �'/9�Lm "3 Met SIOCS PROPOSED EELLEV.9NCS SPILLWAY CREST V/ V/ n 16. ro j • >' Met strage requ red(cy)(67-DA) 345.7 design high water(ft) 49d00 RE-TREATM °PROPOSED 45'EARTHEN awY CORED DAM KEYED INTO )J,J °/ MERCENCY SPILLWAYdeWaer ng all ce ele4ebon(ft) 494.00kP a tlam(ft) 49D.00mANAP NETHE EXISTING GROUND WITH 1' r r®/'/ "//I' ELEV-497 75 wet storage prosided at this elevation CHANNEL SGRIFIED KEY FOR SaL��/" (oy) 379.2 top width a dam(ft) 10.0 Y Z/ COHESION AND 6-TOPSOIL MIN.1 / , available wkme before cleanout(cy)(mn 34'DA) 175.4 bottom of basin(ft) 492.00 O :z' I •A' / ,I / cleaned elevation(ft) 492.93 appror,bottom dimensions: 41k123' 495 495 w .Y // 4 ` dry ace iron tuiredi y)orifice(ft)(>1') 4.7 upstream lace slope N L \ W I- Z�a / doMnstream face slope' 3:1 \ OI � � -aido stooge. ��. � / w / / dry storage required Icy)(67'DA) 345.7 Dank NO Z a'1 L.L- a / /' principle sp9Aay crest(ft) 495.70 length of Lbw,L(f0 121 490 B0,DM OFBASIN \ 490 w / // ! , dry storage prowled allot elevation(00) 458.4 effective vadth.We(ft) 56 51 ELEV.492.0 I.IJ _- � j diameter of dewaterirg orifice(in) 4.0 L/We;baffles not required if>2j 2.M \ I J.f e / ,PROPOSED SAFETY"WARNING: / diameter of'lelobk tubing(in)(Difice+7) 6.0 \ NSTALL SIGNS'WARNING: Pena YES 0f// QUICK SAND,KEEP OUT" runoff. depth of water at spiMay crest(It) 3.70 �5 RISER FOOTING(MIN.16-DEEP, \I485 o / / i / / (RISERDSHALL EXTEND 6'INTO C(use 0.45 for bare earth) 0.45 slope of upstream face(2'.t) 3.1 o � -v / ,�, ;� k(min) 12.6 slope of barrel(Sb) 0.50% FOOTING MIN.) VDOT STD. I r Y$ S. j/ / , 2yr 3.8 O 2yr 8.7 length of barrel in saWrated zone(Ls) 22t35 482 Bts CC.In RCP 4$2 EW-1 BAR / // 25yr 5.5 O 25yr 14.0 number collars required 2 >> INV Rom a •`- / >Iu W DIINJ OUT 4B5 6 PROPOSED RIRAP ENERGY DISSIPATER y ) / / dimension of collars 3.150.1' r n N 8 Principle Spite,/ uWI W L�80',S0O tO% 0 :,E / / J OUTFALL VDOT STt EC-1 CL Al ` 7 / •// / - weldable heed(ft) 1 00 ernergenev sOWMev. YES W LL S S g'a FORRAP W/ out r mro-mr D"1 ABRIC T Q / / , diameter riser tin) 30 required capacity)02SO)(clsi p-p 0 e° spilt uY capacity O(cis) 24 bottom width(ft) 45 10+00 10+50 11+00 11+50 12+00 12+50 13+00 13+25 U Co °a diameter trash rack(in) 42 slope of east charnel(Rift) 33% O k'Y barrel length(ft) 80 minimum length of eat channel(ft) 17 8 N ri head on barrel borough embankment(ft) 12.15 treat of spillway(ft) 497 75 SCALE: diameter of barrel(in) 15 v:,"=s' SEDIMENT BASIN 2 d H 1"=50' IOBND. �8 092033 suF �' 1..40' SHEET NO. 11 Section 5 - Stormwater Management Plan 1 p`i 0 35 -,... _ _.. —_. _ :.<.-:. _-_°--._ _,T Vw� s. _ . ISCOrR31 - - _ - _.. - l� - 1010 t-,1 1 ' - A--' ,-,.•,._.., , c0j___j._______/ r 1 •r ,.: �'� x, 1I— ( 1 ; i_ — ..go go ,A ,,,:l,-1\,',',,,,r_ t 1 \L___ {4 ,,` (Aate ,I, f t`` jI iI — _____---\ ' I —, 11 { )1 l 1 • _ 1 cn LAi ♦ _ /-- `,�._-'.J „y%- '� ' f ANMiY4 PFIASEI WET PONDcl MARFA DRAMS TO D1 I� ?��1 ♦ — —� -- i ) I ) 'i \ ` (vrPO o 30006N r� 4 _ c I ..�- -- , - ' �1-I- II `�SUBAREA DRAINS TO APPROVED cc )r%� \ / 7' I - AVINITV I,PHASE I WET POND ` - ! iAlt, _ (WPO#xor300044) ' �I I fi CM ' , l I I :i......____,� ' . '�----._.. 1 _ — . 1\\ , _ -Il ;.;;;...„,,,... .....„..;*.:'_ _ A 1I a ,, 1 fr \ "- 1 \ \ -4 '- _- THE PROPOSED ROAD CONNECTION&THE r. Y <;` \ SUBSTITUTIONOFTHEAPPROVEDCONDOMINIUMSWITH co _ r yw, \ \ ' '• 'TOWNHOUSES(SDP aos5aoca6),WHEN CONSIDERING lee _ /).. - \\ \ \I _ - SHE 3a,a5o sf IMPERVIOUS AREA CREDITIOVERAGE,DOES aft I - \ ` 41 tali V/ NO7 NECESSITATE CHANGES TO THE PHASEIFACILITYC7; �t _ �-"'�-- APPR VED CULVEe" �. - _ — \ INTERCEPTING OFFSfTE RQNOFF- -_ 7 �__ CONSTRUCTED \ rr _ N L---�J�� I - ~ SOP'm5000z6. ti�\ _ f - ils S� -- - ` 1 ' Ni 1., , X ' ' 4- --- a . • I . ,A il .._:. - - - , _ j" -' >° aoo•oFOIF wm BAN-•(Toro..s o'3 \ DA'A'\ 'I1 a., 0 3 _. -. I ` \- \ I OFCONCFLOW AELEY• . 1 '/, 95. wl 46R .o3 hn,� `\ 6..iPc,CN+6;To-am i w W ° W (\ '..♦ PHASE!UNDERPO# ;000 APPROVED > ? 70 I \ \--,---. IIiru \ \ - - _ - _ _ r y .Yto ' 1 EAT APPROVEDAVINITY I. Z a. ° I I: \ , \ _ AVIN ���, \ MINOR GRADING ADIUSTMEN75 , ROACHING THE FACILTTV \ \` �_ '-"r- DA�4411117 n\\ 1. APPROACHING w ° -�- �� C y'�` VOLUMES ESIGN,WERE MADE J b Z I ' II` CL I■ `- \ ,/ .13sc.,w•64 Tws ♦ I .`III I,I WITH SDP#aoa�5ooa6 w ...� . 1 - _ rorALT 11 i11 j co\ I \' DA'B o.astiT0 U I LOCATION OF PROPOSED .00'OF OLLow ELEV.6'Th-Ra4 hn.) ..I I II II LLI LU ' i 3.66P[401.6yTRdas Vos ■. *"�-prof OK.Ft OWw/aELEV-.6'Rc-o.o.hn.) •.'�I I I SWM FACILITY - 0 __ I ' Q A 1,.. ./ -- 1 PRE DEVELOPMENT RUNOFF FLOWING-- • O w in ' - TOTAL 0whIrELER.a1(T... ', - OFiSrtE ISRED6tECfED w/PROPOSED Q r sod OF OLF MtrELEV.YRc.e 3ha) - TORE ENT .. , CONC.FLOWw/e .oa Sao'OFC ELEV. hn1, Irk I ><i ■ \ cE rM \ J EY U -- A 7 r t �1' } ' ' T ii i 1.11 W . - —. � _� i ) _ � � I 1, L. I I- - - '" \ \ ' /_ :mot__ �r - �_._.+. _� ' l' \�• :�- — II `+.," *mot` --..- - 'I\� .. . - I 1 —�I . j ) 2 I r 1 \ - L _ 0 LOCATION OF PROPOSED - -`�- / \ , SWM FACILITIES _ - _ \ C i •' \ --_ v I / G o ° -� - \ 1 JOB NO. GRAPHIC SCALE �, \ ';, ,. --.. 091033 ,r o� v. o = NP 00 1111 _ ,. �/ \ice -t`I / 15NE;1N0o. i A r I loch. 100 ft --- _ \��'". s. \'. • ) - �� ! o General construction notes for Stormwater Management plans - ' ><.All dams and constructed fill to be within 95%of maximum dry density ;. / �. - - �' � +�' ll!Op` and 2%of optimum moisture content.All fill material to be approved by a c - - '.r. , - -- -��`- - ,_V•• ., :` - 1 I 'r�� geotechnical engineer-A geotechnical engineer Is to be present during - -- ` - '- - "-` -- - construction of dams. - - - _ � N x co(.1.R7 27 -- - - ,.. � ^ �� �: $s- �;- ---- w=te=r I � _ ■ff (r- �scoNrs. 35791 a 2.Pipe and riser joints are to be watertight within stormwater \ // 'I _ - •• -> � t ( _4arrs T r ,� �e' management facilities -- y i' % 4ks f--_----�' i .-..- _ L. ,t Ili e -1� : 3.For temporary sediment traps or basins which are to be converted to :�� - r - _ _ .. �`� �. �f �- r� >!'�a`' �:.'I' �� x^L permission has been obtained from the Countyerosion control inspector --' _-f �p ' 1, :' � 1 � : ' t \ 1 �/ ermanent stonnwater management facilities,conversion is not to take _ ,�''`�. place snot the site in stabilized,from -' 1 ( -r - 1 aa�` \ - -1 p } 1 _ _ t - ' - , _.--H _1 ' .-k------H- ----- t\-`. ''',.-z)1; '': .4',-,:AV-1;•-' ,,I 1 .0. e� 'I1 I - _.� __ ' 1 Y Y li., fi l{¢. --"VVl 4 - I I1 O `` I ' �� .I. ATE" ') � I� Y/ O E % { ! /.�: l. /lam. ) - n % I ( � 7 r 1 I J I, b a .„,In, It ilk" % isa \ /, ` _. -- \ .!' \ SUBAREA DRAM51'O APPROVED I / 11' �� ttt id' , r♦ I • Y J ANN17Y it e�ef t/ 1 I /�•f.! I,PHASE I WET POND fit. 2Lre j� �, cr • LLI i ` I ` -.. (WPOIms3aoou,) I x 4,44 ' ,r- .1 . z . S. (('J I ju�r a O,j'v`'. N' A At -1 SUBAREA DRAINS TO APPROVED I ! ` J _ir PO}.."-----\ 1.. ANNfTY I,PHASE I WET POND % 'Iv'1�1i11 I - , I • s. 11 ` III 1 � �T'(1 I'� I f ' .0'h 7 I 'IIap't'+:° 'S- �� - �s, w J , „ gylia ►06 r• if- I y L3 • 1 I 1 d i. ---....------1,..- ate _ _ �, _,'� . V ' Ir , _ - v��h . . . ..- - I�'. ' DRY SW LE Ma o.58 an R, 't.g a R �„ - ... - DRV SWALE 7h.o.o9 a - I a !- • re K,' aDESIGN) ` ,(LEVE sDESIGN) y M a� . (LEVEE -._--- V (CM-ANT BENEATH FAOV.Y ,( FJti i� 1� -' - �' v ENSURES SOALE IS OFFyvE + / � ° is t), CI) GRAPHIC SCALE �--- _ ie,' + i N o W oo w 1 I- �j~1 f IfI�0�llin :. t _ - t /kf, - <'. -` 1 �f 7- I PER APPROVEDWPO#vos3pooµ(SHEETSWM-5)THE PHASE I Ct ( IN FEET) �` I ,I `.. • „M 4� )fl Z. 5 f x WITH SWM FAN ADDITIONAACILITY IS IL WATER QUALITY VOLUME OF s,Bgxcf(ORGNED TO HANDLE THE APPROVED AVINITY 1 1 1 inch= 100 ft t }�I I 1 4 \ Si-Assa5o FUTUREIMPERNOUS AREA WATER OUALITYCREDFT)• N Lei o Post-Development Subarea A(Total)lmpervious Areas I Y I I _ 1�`� _ _ _ \.ti..__. .-__. _ _=be- �= ! \, •{� t,� - / , C� TOTAL Tc.o.as Ms • , - - li Roads&Sidewalks 53,700 sf seNOFOLFw/AELEV•y(Tc•ess hnl , , ' Attached Homes,Garages,Porches 60,500 sf sagoFCONc.FLOW wIaELEV.9'(Tc.o.ecir>,� Ir-Tfl _ 1 . - "_ .A N w y7!OFDannELFLowOeftisacn.e3tna, _ _ 'i '\ ' I - <EN Z - Detached Homes,Garages,Porches 6,000 sf -- - f + r'�, Iu, Homes'Private Sidewalks&Driveways 14,800 sf I {` VINIITY II III I c r Clubhouse&its amenities 2,200 sf 1 > a Total= 137,200 sf / , I _ _--- i J Z Post-Development Subarea B(Tota0Impervious Areas f '�..- ' 1'',1 �l 11 r J oI Roads&Sidewalks 45,000sf / I I J( II II IIIII f W Attached Homes,Garages,Porches 35,875 sf I _ / �� ' ', --E _'+ li1 1I --_ J 1I I L -J/ �I.11 w c" Detached Homes,Garages,Porches 13,950 sf , „_. - r ,' I. /J 6 _,,. -- - - t 19 /7 w °o V Homes'Private Sidewalks&Driveways 10,g(10 s! �'. \I - }}- �� - �� ` PROPOSED BIORETENTION C�LL'A'(LEVEL s L a 1 _ I DESIGN)&DETENTION CELL TO REPLACE Aunty Esbbs a Entano0 Culvert Pan Sheet No. Designer 10(VF Total- 105,625 s/ \ lII •�•�''• t`V�' •4,PREVIOUSLY APPROVED PHASE II SWM FACILITY o Project b Kappa Skims Sleep 1 N 1 r- R �' - �� r�\� UNDER WPO DESIGNED oo44.THIS PROPOSED0Li) Z itl o Cuvxt8l Rev Date Dab 10715J15 -----_ _ �t 8 Intl a� a� ear NM FACILITY IS DESIGNED FOR AVINRY II,MEETING J w < STATOR _ _ - I I , i I.1'. I - CURRENT REGULATIONS. Z F- 05 HVDROLOGICILDATA AHW Controls - I-_ -- ill . 1 = �v e 100 yr Flood ptrn ebv "..-. _1 I . -_ TOTAL T<•o.,s hrs. LL DA'B' Design AHW dean eleV --- -' f-- 6i OFOLF(a 3N(ic•o.rahrs) oa (4 85 sc., c�i N=79� - , DA A t- SWUM elev tee Mebv �- - 'tl 96o'OF CHANNEL FLOW©a ft/z(Tc.o o3 hrs.) , l.l..( r ry Tc hrs.) I A 6 1 1 (4-94 ac.,CN-85, o I,- - ^ +I'I Tc•o15 hrsJ , Y Ea I Shoulder I I ' _ / Ill z 2 =2 a On 467.65 I I - I r- Z > O its DISCHARGES USED RSK ASSESSMENT I �l" F9�- - - I I s' ' l - W > od Q 'a 1 ADr saver • caw N I I I -. --- - -- -' { Pre-Development . Post-Development 1- (n N fi O 2 • 111 CFS Detours Avadach Lengh , I o - ' DA'A' 5.18 ac- 4.94 ac. UJ O-1�•-8.7�CFS Overleaping So9e - . I ,I I j DA'B' 3.48•o. 4.85 ac. W `o ,O + • 11.01 CFS Flood Plain Management M EL 48514 I So- 0.43% MB./• 484.87 ''-L_ I I - +- - DA C' 1.13 sc. - ° O CFS Crania and Significant Impact Orig Gr Else L• Ong.Gr Elev. -- I ( 9 79 an. 9 79 ae. = O CFS �__ ! _.. _ g3 Total• ey HEADWATER COMPUTATIONS CONT OUTLET - ____--�-• ,1 I _- LC I�N PROPOSED BIORETENTION I Dutlbw flummery. Event) o CULVERT TYPE 8 SIZE O OS MET COOT OUTLET CONTROL Hw VELOCITY Treat COMMENTS --�_ ._ / - `. =-Z ) CELL'B(LEVEL II DESIGN)/ , Pre-Oe rere Poet-Desbbment Y fi End ►� HWID NW ke do (dc•Dy2 To H LSO,NW ELEv CM Smoot, - - - _ - '\ ' - _ DA'A' 3.04 cfs 1.17 cfs _ ` 8 DETENTION __ DA It' 2.23 era 1.11 cfs Eabiq 1r RCP Culvert(2 yr) 111 111 0.5 0.8 0.5 0.60 1.05 1.05 04 0.3 1.2 12 3.89 N/A .. -! \• �� 7- I DA C' 0.72ete - = '�.r_+a.,:.. i 4------ _ I I Tub1= 5.97 cfs 2.28 cfs Q • O `Y Edttpt8'RCP Culvert yr) 6.35 8.35 1 15 0.5 1.00 125 125 04 0.3 1.4 to 3.89 WA - ___ - -�-.•. --- - Outflow Sumery(2•Yeer Storm Event) (7 E a ! ._ .. __ - Pre-De dop ent Pop-Deselopmen[ 'c Doing 18'RCP Cohen(25 yr) 1202 11.02 1.56 2.3 0.5 125 1.38 138 12 OJ 2.3 2.3 7.89 N/A \ / - - - DA'A' 3.74 ch 3.18 cis \ _?:. `<s`` �, I DA'B' 2.71 Cl, 1.52 cfs N F a s W '~w \'� \ ` \ NOTE.SWM DA'A'OUTFALLS TO DA C' 0.88 cfs O = o •t \, ) Total. 7.34 cfs 4.70 cfs �,•\ A NATURAL CHANNEL,AS SUCH g ,/, y THE POST-DEVELOPMENT Outflow Summery.(10-Veer Storm Event) xe NO. X S ''-"\ / :/ 10-YEAR STORM HAS NOT BEEN Pie-DaebPrtsed Pop'I)eselOpr,eM 092033 DESIGNED TO BE LESS THAN DA'A' 10.69 cfs 20,38 Cl, v `•� , THE PRE-DEVELOPMENT DA'B' 8.06 cfs 6.35 cfs SOILS .B - De5gnFbod Saceed.Rob. Elev \ \. ` \ / 10-YEAR STORM,HOWEVER 'I•=100' Owrbp Flood EAceeO.Prob. -Bee ` ids- Y�� (THE 1-YEAR STORM MEETS 2.62 cfs - SHEET No. 3 P SUMMARY&RECOMMENDATIONS'. 18'RCP Cuban b adequate br fie 2'10Rs year gxmf and M rel overup rwdeey &M Flood IN Exceed.RoE. -Fier v' , - '. / REQUIREMENTS FOR CHANNEL DA'C' ,.,a - `� ''?.. k N - 7 ;-/ ' -. ADEQUACY PER 9VAC25-870fi8. Total- 21.36 cfs 26.73 cfs 5 €" SWM FACILITY#A BASINANOTES LEVEL I BIORETENTIO N BASIN(3.oTv) a STATE APPROVED TRASH RACKS SHALL BE INSTALLED ON ALL ORIFICE OPENINGS. I.A CONCRETE FOUNDATION SHALL BE INSTALLED ON THE RISER AS SHOWN&MEETING THE MINIMUM SPECIFICATIONS SET FORTH IN THEVESCH SPEC.a3.M. eTH Ova 3.AS SHOWN ON THE PLANS,A3o'WIDE BIORETENTION BASIN SPILLWAY SHALL BE CONSTRUCTED WITH A CREST ELEVATION OF 491,CREATING A MAXIMUM ..�._ w. S l-f; Gj DETENTION CELL(ONLY)ROUTING BIORETENTION BASIN PONDING DEP HOFss'THE BIORETENTION BASIN WEIR WILL THEN OU FALL TO THE DOWNSTREAM DETENTIONCELLFOROUANnTY // �Y (Iv P� CONTROL . T\\15,, -•✓-_ - ''� . • Basin Input Data Routing Method storage-indication Inflow Hydrographs 1.CONTRACTOR AND CONSTRUCTION SHALL ADHERE TO ALL OSHA REQUIREMENTS.ADDmONALLY,SPECIAL ATTENTION SHALL BE GNEN TO THE CONSTRUCTION y' L. -\ \ ./,- N y yk"� ,',-- �', SCOTT R COLLINS'z SHORING ASSOCIATED WITH THE BIORETENTION BASIN EXCAVATION. S. "'1 ��/'{1_..,/�'- _"'^S'A \‘ 0 No 35791 .L ao Contour Areas HydrOgraPho 4 Kinow H741=9.its -=t hA/ J L EkvrtiorKfO AreNsk C vol.( ) TRASH RACKS TO BE INSTALLED ON ALL \ \- C /-,T` / _- orrWoted ry a-yr a4-MPeak sCSTR-SS Slam Evan o.o Hflow(cfs) at588x ss.94(ha) tha SC.5�o ORIFICES PER VSMH TECHNICAL BULLETIN 97 `.te r,�y _ / "� - - '� 4B1 ao 6oa.00 7' -YY " {m.oR 9940o 29.2 aNda.rge(4k) 4s65rt 515 - 515 \ r-' 1 <,y ` °� \\ ESS ♦, aa.ae mrs) ss \r' �. 4�� 746 air 5C5 Tq. Storm Event ORIFICE COEFFICIENT _ _ t g '$ ~ ♦ � �DNAL�'water level On 494"57ax aa.34 Mrs) Area Nam) F94o - )7Jp,; yrL 49o.m a8a6 oo 235.6 Storage lM 604175 CH r Soo. / -\ I \ -4'�.__ i 41 ' J' �""+,a•",_� . �.' �y \ \ ,. EXISTING GRADE I,' - � -'` � �;:";�� -, �� - - _�� - h v C \ 49a.00 a6aa.00 199.5 Hydrographs rainfall,P(In) 30 49300 3.7.. 04.1 ayr.4.hr Peak SCS TR-55 Storm Event time xconc.(his) s5oo - \ 494.. 404Lo.L. 5673 irdlow fds) ss594m.94 Mrs) time Increment Ma) 0 11I / // • 7 i ✓ k 1g6.00 497o.oa 8339 discharge(ds) 3.a83rt ssv6(tin) time umkmrs) room 510 I 510 =1 I1UI� 11/4� f/a /I -I,j/ _ _ - �_- `,/ / r -'`t,. t \1 water level(k) 494.74art aa.s6(hr.) fudge faces 100 ( € ,�R /�1 _ / / ,� \' Stert_Elevrtionlft) 4a7.00 Volley) o.aaoo rtarage lq) 6xg.v3g routed We ROCK WEIR AT 33 �{/' % / peak flow lcfs) aa.598 I \ 1 Ift,�t' 11 ��`t / // /T� 3{ f / Nydr09rapha peak tine(his) 22.930 ELEV 499.0 ) - 1 i••JIFF I.II) JI t s-7 5 Outlet Structures OWN stn..,a WITH 75' EARTHEN \ PROPOSED O36'CL.III RCP I_ - If l I( / /.,` //� .v 1- „' _ Outlet xnM,veo Weir to-yr a4 hr Peak SCS TR 555toim Event wlume(cy7 s338 a49 NOTCH WEIR AT ELEV RISER RIM ELEV.494.5B w/ • k g /✓ '� Orifice name Riser inflow WO 564x sago(hrs) 498.0 498.0.WITH 30 2-03-MID FLOW ORIFICES 1' I 1 hi �. r \ i//,/�/ � )'� '� m4 Orifice diameter On) 36.00o discharge(ck) a038art sage mrs) Hydrographs 505 NOTCH AT 1 Ar EL.EV.4m5z 505 It t 'y J,! / / �.. area oaa side angle o.coo water kvert(f0 495304x v.9e mrs) SCS 497.0 1H32'LOW FLOW ORIFICE AT J d J \,( />/ N < '6%'' diameter or depth fir0 a00o coeMOem 3.30o ge1M 1a4a93 a-yr a4Mea(ackre�TR.55 Storm 49to Event \ EIEV..487.00 I I�. 1 -� \ II U,////)y�k .,G ////'� `. -- widmforrestBn) 0000 overt lit) 494580 PROPOSED / ' MMro9NrPh3 CN 85.aoo CLEANOUT SEE #t /y . 9 /` /� j t / \ _ coefficient .50o multiple a voo.yr a4-hr Peak SCSTR-55 Storm Event Type a DETAIL FOR \ • I�' 1 ll. ` 7✓!�% A ,t,�`Y"` r/T Y '` X (ft) 497 discharge into riser inflow(ds) µ8a8 rt u94mrs) rainfall,P(In) 3.7. ADDITIONAL PROPOSED t0 WIDE TOP OF DAMTI1 tf ��''!'\/ /4b_ �\j, O Z hipl transnon at On o9v duMrge(ds) 44388n.96 Des) time x conc mrs) o.a5oo 500 INFORMATION.(TYP.) ELEV.488.OD 500 •.-. I \ y / \/ / /\495sa96 ) 1. �� `, �\- I ! / � x ( ) 86 ' ' ro. 304 area pi- ( li. \ \ \ -` II f iY O coefficient 050o 0(m) o4.m0 ha ' rivert(ft) 488Sao hM) oOro SSCCSv S OF STATE APPROVED 1 I1 \\\\•,\`\\I\\a- `� J, I } 1 .<_�j'� �N/� r multiple ManSl oos �4- torte Event CAVSOIL MEDIAEED NOT BE 9, J . ( i _T. \\1\ 'v„�-/? .✓ J Fti-v� ',-e i�' Y/ a Length(6) 8400a ao-Vcorehr Peak SCS TR S non A '\ \ , . J �s x Cis • discharge into user Slaps o 005 Area lases) 49W EXCAVATION NEED NOT BE ''''1,-' f I.. r �! � �^ "-" -'>P - d SIDE SLOPE 1.' \ I Y Inlet coeff Ke osou Type 3T` "" 90 {•I_Egwuon constlnt sat 3 rainfall,P On) 5.600 3'MINIMUM PEA GRAVEL LAYER { \ \ 9l f -. /,• ('._ \J \\�,_.a_�„ �' a� LLI �'�`,�-�/ \ -,k'• ".`�,Y" ' name.Emergency Spillway routed Irue lergm(k) SS aoO peak flow(cis) a585 SPACING WriTI CLEANOULS,SHALL BE INSTALLED THROUGHOUT ani 485 1 " \\� _ - P`y sit rt(ft) o.000 D. pee Htkne(hrs)h BIORETEtITION BASItY RIB EL 10'SANITARY PROPOSED RIPRAP ENERGY \ , 1 t 1• _\\ -__�J \ EMERGENCY ACCESS ROAOI 6'SCHEDULE to PERFORATED PVC UNDERDRAINS,so MAXIMUM inve RCP coefficient at9r 3000 volumelgl T37 THE LBE SL ER IN THE LOWER STONE DYER UNDERDRAINS }, \ \ fit) 4953r SHALL BE SLOPED TO DRAIN TO THE RISER STRUCTURE OR TO dischaultiple v Yd Yap 3 DAYLIGHT INTO THE DETENTIONCELL&SHALL HAVE Ass STONE SEWER PIPE DISSIPATER OIJTFNl 482 • \ \\` e� \ rye through dam 5C5 INV IN,487.0; I SHALL PROVIDE SWM FACILITY Soo-yr m.hr Peak SCS TR'SS Storm Event SUMP BELOW THE INVERT OF THE UNDERPRAINS. vwi 1U.EO wID I J I - \�% � \ INV OUT 486.SB Ni \ MAINTENANCE&ACCESS ; Nes(acm) 490 w p0,p O L.Be•S=0.50% "'ua WPRAP W/GEO'AMID \ • \ CN moor Y O M UNDERIAYMENT L.S , 1 I I.'� P.•ap05ED GABION BASKET WEIR / '� Type a i,8 IO 0 Ir7 W1.6';W2=10'D.1 A' \ ., J. P.74,OTCHAT EIFV 498.00; \) h rainfall,P lin) oa0o W� In N 'r'v 'r'a 5, •I /�.,/ k' time of cons mrs) vsoo : ` . � -PROPOSED time increment mrs) o. 10+00 104-50 11+DO 11+50 12+00 12+50 13+0013+25 I I / / RIPVRApI]uNNEL I time limit(his) r.000 I� / fudge factor too _: , � !� routed true SCALE. \ / PROPOSED FOREBAY I PRE-TREATMENT peak flow .3o V1"=5' BIORETENTION BASIN 'A' i ' _ :, wme1M aBris3 H.1"=50' f r- -_ •I O) BIORETENTION BASIN'A'(LEVEL I)DESIGN&REQUIREMENTS i { ® \ PROPOSED EARTHEN WEIR W/3o' co \ NOTCHATELEV 497 (Y) VARIES pEAp�,y Treatment Volume(Per VRRM Gkulatiolls) 11,551 cf I:� r „„�,,,_. 1 aaasai \" (MA%vPoxOING) 63 INNTRITOSInaFAnm DRY SWALE LANDSCAPING Minimum Treatment Volume Required 11,551 d N 'i-` --� ,ROPO•4 I 4\a Z CNI ((% J • PVC CAP n MnimumF ba Vol Ir <- / rmom -4- cMccorsorE a?Eaeuc-u7 OR APPROVED y porosity;3' porosity, ' " II I 4 • ) \\ ore y Volume Required(15%of Tv) 1,733 d BIORETE TIO RA 1 Foreba Volume Provided 1,769 d /!L � L I 2 _ CO 12. ,i,EODNAteHr Minimum Surface Area Required(Tv/storage Depth) 3,976 sf 6'Mu at 25%po ty; pea gravel at 2%po ity, I + 1,P-, T f / PROPOSED so'WI TOP /� `madrrn.T000AD.wcavnnon SEEDS. porosity Pon rigs � ,LLr ( ,�' t44Penaazt Surface Area Provided 3,981 sf 12"stone at 40% &12"of di t 100% .I(.'. \\ DF DAM ELEV 96 7 �I� TOCOJER ENnRE Onv SwAIE SURFACE porosity \i I a . `� \ 1 N STORMWATER MANAGEMENT FACILITY GRADING ?(,c v `'✓ .^rl all' 1� SYYS O WIDEG S PEMFArtE ENGINEERED 2100EMATBY OL (one Area of Afea Of R TBI - EMERGENCY SPILLWAY ,zr VIIIMENE6:t:', \- '�` \ 1 - - - \ CREST EIEV.y9465 N Z ;m;Z(L"l+„{ 5�`4 Elevation Forebay Cell Volume Elevation Cell Contcws Volume �. f rltiNOBw..FeAEP.AVE< (ft) Contours(sf). (Lf) (ft) (sf) WI \\ \ r: J .r r \\ N i RD.x STONE COWACiso 1 w .5. - , 11 \ W < 496 203 0 496 3,981 0 # � 1 l - / 1 ``II PI DRYSWAIE SECITO 497 330 264 497 4,514 4,245 ® ROPOSEk ----- 1 11 1 I 1 `LIIIRCPRISERRIM \ ^ELEV..494-5r a� r PROPOSED DAV SWALE x MALL OE WRAPPED IN FIVER fAIN0C TO PREVENT 498 4T3 6a9 498 4,925 e,%3 Gl -CELL NTiON 1 w/LE FLOWOa'ORIFICE INVERT / Ow 00105001.11100 urarrcAM MTN.,wrmAMEmMccror 4% 561 1,150 -.- ,� - - '-- I■\_\_ \,: .. a I ourELEV•481o0 W A a. NPROVAL DRY FOR 2. TIE 'MSMALE. MOCERATEY rvaeAN[00MM 500 679 1,769 ,Y I %s ill ��` \. 1 I /MID FLOW 9 3'ORIFICE INVERTS J Z - (STATE RIMMEDownai 1 Mtl AT ELEV.. ..I � � Tus�M�AA Area Of / \• is PROP65ED a4'CL.III RCP BARREL �/n 0 G 0- Elevation Detention CellVolume /' ��, \ INV fig j 0 Uj o PROPOSED 6'HIG 4B1.00 E■ W 7 (le) _Contours(5f) (Ct) RETAINING WALLS • INV O=487.o.58 V 487 602 0 / I - ADJACENTTOSWMFACILITY I^ Q i 488 991 788 // )7 • \�1 T v/ 489 1,476 2,014 / // 1 0 Z Ta 490 1,826 3,662 /,// , / _ 1 iD' Z CC I"' S2 a 491 2,207 5,675 „ , / II F1- \ Q Q ` 492 2,622 8,087 LEVEL 1 TREATMENT I� I I- W 8 493 3,067 10,928 BIORETENTION BASIN'A'DESIGN .I 'I' (/) PROPOSED RIPRAP ENERGY ii �aRaIE LU W o a 494 3,541 14,230 SCALE 1"=30' DISSIPATER OUTFACE I LLI 1- a`. 495 4,041 18,018 >,,< Q E R 530 530 496 4,970 22,515 a l. _, STR 10D I-" Z II w€ LEVEL 2 DRY SWALE#2 '` XAVEAALEw51ALL ,.af ___ TP 52377 5 h--f LL ' A 525z SCALE 1"=30' er OUT 515.90 a ..fs45Lctp 1 \ (STTt oB12 ZCI) Q O w r \T S\"r AT ELETE IN Dry Swale a2 Watershed(within Subarea'A') W V' III / \'� AT ELEV 5 .5 Attached Homes 9,700 sf Iw ,,Z. AT j "CLEANOUT / Managed Turf 15 65 sf INTERCEPTING OFFSTTE RUNOFF TO 1 \ \ Total 25,265 sf J c oa BE CONSTRUCTED WTHWPD I - .1 - `u a° eaos3000µ PHASE ISWM FACILITY k� 1, r eWALE • // 520 ..?t 4 )\ I, R ELEV 520.0 DRY TREATMENT SWALE i2 DESIGN&REQUIREMENTS a2 ., • \ / Treatment Volume(Per VRRM Calculations) 1,020 cf I r t8 PROPOSED- ='a i < Minimum Treatment Volume Required 1,122 cf UNOERDRAINS /- a 6" CH.40 PERF W CONNECTED TO / Minimum Surface Area Required(Tv/Storage Depth) 521 cf <-3'Mix at 25%porosity; Try, 0 0 v i PVC UNDERDRAIN po Ry;3"pea gavel at 2%poroi STORM SEWER SPACED 20'O.0 I I 51 5 Surface Area Provided 746 of 12"stone at 40%porosity&12"of ponding at 100% 9 f ,` '" /1 INV IN.516.25 BADS PIPE Minimum'Approximate Surface Area 3%-10%of CDA porosity Q �E \ L'L. 1 INV OUT.515.98 INV IN 515. Surface Area Provided Relative to CDA 3.0% -11 L=54';5�.50% INV OUT 615.85 512 "", 1 > m L=64.8'f5$.60% NOTE Glitters shall outfall onto a concrete downspout splash block,where runoff shall then flow into the grass channel pretreatment E 1 g \ \ co N N o ff upland of to the dry Swale. CM G v P I1I .� AT 5.1 I I_. W LL STORMWATER MANAGEMENT FACILITY GRADING a N 1 ' ( 10+00 10+50 11+00 11+5011+75 Dry Swale o Y I SCALE. Elevation Contours Volume 92 No i r`. (I) 1st) fl 092033 f ` SCALE SWALE #2 ,II I SCALE :., rr b� 4=-!.i1`}-. Ft1"=50' 521 1wz 951 1"=30' w Tae ' �TTJ- - � 522 1,662 2,361 SHEET NO. 6 5 BASIN B NOTES. • 1 NIORETEMION BASIN IF(LEVEL NI DESIGN&REQUIREMENTS. s.STATE APPROVED TRASH RACKS SHALL BE INSTALLED ON ALL ORIFICE OPENINGS. TH - S14 PROPOSED 6'HIGH w LL 1.A CONCRETE FOUNDATION SHALL BE INSTALLED ON THE RISER AS SHOWN.,MEETING THE MINIMUM SPECIFICATIONS SET FORTH IN THE VESCH SPEC.a3.a{. ,.�-er.`�.`R OF , J LII PROPOSED'NI .- LL Treatment Volume(Per VRRM Cakulatlons) 10,005 d 3.AS SHOWN ON THE PLANS,AS' G. • //,-.per( ORETENTION CELL - Minimum Treatment Volume R 3o'WIDE BIORETETOE BI BASIN SPILLWAY SMALL BE CONSTRUCTED WITH ACREDOELEVATION OF{gy,CREATING \l OORATELEV;21 -� Sly eQed 1 12,SWd BCIORETENTION ON BASIN PONdNG DEPTH OF la•TIE BIORETENTION BASIN WEIR WILLTNENOU]FALLTO THE DOWNSTREAM DETENTION CELL FOR WANRSY �� __ S1• PROPOSED HABION: ET WEIR Minimum Forebay Volulle Required(15%of Tv) 1,876 cf __ _W/55.NOTCH AT ELEV 4g) {.CONTRACTOR AND THEBI BIORETENTION ADHERE TO ALL OSHA REQUIREMENTS.ADDITIONALLY,5PE0AL ATTENTION SHALL BE GIVEN TO THE CONSTRUCTION SCOTT R COLLINS_ PROPOSED GAM. : KET WEIR -- (MAX u-PONDINW Forebay Volume Provided 1,935 cf SHORING ASSOCIATED WITH BIORETENTION BASIN EXCAVATION. 0 W/<5'NOTCH AT ELEV{': _ Minimum Surface Area Required(TV/Storage Depth) 4,305 Sf <-6'Mix at 2S%POrosRy;3"pea gravel at 2%porosity, TRASH TUCKS TO BE INSTALLED ON ALL ORIFICES PER ) NO. 35791 Y J _ surface Area Provided a,3zo sf 12•stone at 40%porosity&12"of ponding at 100% V9MH TECHNICAL BULLETIN a] . �' z�/a ,. rose 510 ORIFICE COEFFICIENT a DA 510 %A• -f,`O' rs, PRO SED ty PROPOSED 030.CL.III RCP �`S/ONAL t•`•STORMWATER MANAGEMENT FACILITY GRADING ROCK WENLAT ROCIt wE1R AT I `I II • TiArta Of Arai of RRlr 4ELEV WIT .CEElEV 4WITH 25.'0R15ER RIM EIEV.a86.B)w/PROPOSED RIPRAP 5py 1 11,CELL Elevation Forebay CeN Volume Elevation Cell Contours Volume! AT ELEV 492.87 FLOW ORIFICES ENERG DISSIPATERJo, - NOTCH AT NOTCH AT ATELEV WFLPRE 7AEATMEM I� 11j1` (h) •COfI[OWs(S1) (Cf) (ft) (St) (�) ::: sOW ORIFICE AT ::: 11.pp i1 1 496 222 0 496 4,320 0i ,, iI 11 497 484 345 497 4,823 4,569 PROPOSED 1' 498 793 977 498 5,325 9,641 CLE/NOUT.SEE fOPYR wee PROPOSED 10 WIDE TOP - '-�, • _ I'��1a/r . I 499 1,133 1,935 499 5,827 15,215 / ADDoErITI •ONAL •aR!'Bm OF DAM ELEV•A9B' L_ ,, 1 INFORMATION.(YP.) 1RYR WSE 46'WIDE P.409 LINED •4BS.412 EMERGENCY SPILLWAY CREST - g r Area Of PROPOSED EtEV.49T 76 `.• 11 PROPOSED FOREBAY _ (:`/ Detention PRE-TREATME , Cep. •so•Aea T PRE-TREATMENT ___- 1 I RIPRAP I HEV 498.0 --"C- ypg,• I Elevation Cell Contours Volume CHANNEL PROPOSED ao WIDE TOP rig (ft) (di (d) OF DAM ELEV.•{98.m' PROPOSED{"WIDE I \ GRASS LINED - 486 488 0 495 R30POSED T `9.9 MAX 495 v EMERGENCY SPILLWAY FOREBI•Y / _ C J CREST ELEV..<9).)S I 488 894 1,36Z PRE TREATMEHTJ _ _ h 6 g PROPOSED 3o'CL.III RCP RISER 4R2 ( 490 1,418 3,654 B OF STATE APPROVED _ • \ > // RIM ELEV..496.6Y - 492 2,062 7,114 SOIL MEDIA SIDE SLOPE _ .w w/MID FLOW 4-06'ORIFCES I EXCAVATION NEED NOT BE \ V' p GRAVEL LAYER ZINVERT AT ELEV.•492.67 I 494 2,828 11,983 VERTK�sL. _-- \ ..i AFLOWELEV W B45.ORIFKE INVERT • I 495 3,258 15,024 COSTING PUBLIC ROADTOSERVE AT ELEV.•486.m I 496 3,719 18,510 49�3•MIS MINIMUM GRAVEL SUMP MR�� 49O uGiuG1 Q AS ACCESS TO SWM FACILIY PROPOSED Is.CL.III a O ru Z w RCP BARREL 497 4,139 22,437 11 C "�- L•Bo';S•o.5o% I tr • EIEY. TS \ �~/L to •- - I 498 4,730 26,858 PROPOSED LEVEL 2 (MIN. ) •sd liili INV IN.486.00 �/A LEVEL 2 BIORETENTION BASIN'B' fli INV our0{85.6o _ , 499 5,314 31,867 - _ _ BK)RETE UNDETION BAST 6-SCHEDULE 4o PERFORATED PVC BE INSTRNNS,vo'MAXIMUM 485 > RECENING CULVERT CONNECTING &LEVEL 1 FILTER STRIP DESIGN '�, - SWM FACILITY SPACING CLEANOUTS,SHALL BE INSTALLED THROUGHOUT W TO SUBAREA'A'RUNOFF TIE BIOFlLTER IN THE LOWER STONE LAYER.UNDERDIW NS SCALE I'=30' ��-_\ CULVERT INV.IN.<es.a. LEVEL II BIORETENTION BASIN(1.25Tv) SHALL BE SLOPED TO DRAM TO THE RISER STRUCTURE OR TO FOOTING �T STD. DETENTION CELL ROUTING DAYLIGHT INTO THE DETENTION CELL.,SHALL HAVE Au•STONE 015'CLIIIRCP / EWt 482 Ce SUMP LOCATED BELOW THE INVERT OF THE UNDERDRAINS. - BARREL SWM FACILITY#B » INV Ni.488.0: Basin Input Data Inflow Hydrographs Routing Method Storage-indication W r`N o Imotif4ASB ro PROPOSED IRY•RAP ENERGY DINIPATER LEVEL II BIORETENTION BASIN(1.25Tv) - IdJI DI motif rn tV =FALLVDOTSTt EC-1a Al BIORETENTION CELL(ONLY)ROUTING >o Contour Areas slnroa'Hydre9.0. Hydrogrepho ��LL o N oN a <a RIPRAP EOF w2wn,DRIC I T EkvatioMh) Area(sf)Compued Vol.(ry ra) HYdrogpho ROUTED OUTFLOWI-yr s4-h Pa W k SCS TR-55 Storm Event Routing Method,storage-indication Basin Input Data Inflow Hydrographs 486.0 4BB.ao o.o Cone inflw(tfs) 7.688at mooch.) 488.0 B9<.00 5.4 ROUTED OUTFLOW a-yr a{-hr Peak SCS TR-SS Storm Event discharge(ds) >_ao)at n.s.8On) 10+00 10+50 11+00 11+50 12+00 12+50 13+0013+25 HYdmgnpho ACorx.n Areas Hyd.9.14.a 490.00 208.0 135.3 time ina(minlhrs) 0.02 ...level492.433.va.32(hs) a-yr a4-fin Peak SCS DI-55 storm Event Elevation(([) Area(s0 Computed Vol.(ry) SCS 492. ao6a.00 26,5 time limn(minihrs) 30.0o s00retorage(ry) a97.806 Inflow(cfs) 8.236 et u.98(1n) 496.00 43a0.0 o.o name: CS a-yr m•hr Peak S TR.%Storm Event a9400oo 28a8.0o 443.8 file YEAR)cy) fir Mervals.co SCALE. discharge(ds) 7.588 at 22.00(h.) 497.00 4Ba}ao 169.2 Area(coo 4-850 495.00 3a58.ao 556.4 volue(cy) 5..93 H7drog'a"ha V1•=5' BIORETENTION BASIN IBI o " wrtorkvN(h) 49Tu9at u.eo(hs) 499.0 53aSu 351.a CN )g.ou 496.0 37s9.0 685.6 /.lied [sue ROUTED OITFLOW1-yr 24-hr Pak SCS TR-55 Roan Event \ vcw9e(old 194.97 499.. 5827.0 563.5 Type a 497'00 µ39'oo �'0 time in hours MN Infow(ch) 8.631 at LL0o CAN H V=50' reinf0l P(M) 307. {9&ao t7aoao 9948 dhchrge(ds) Lets at u.a6 MD Surt_Ekvrtial(h) .96.0 V.40. o.000 time d (hrs) A99. 531400 1a80.3 H/L9.3.hs waterk eian 492.e34.u.a6(ks) b a-yr Rm-loW.Peak SCS TRR-555 Storm Event tme increment Ms) o.oaoo Cure staage(cy) 334799 inflow(cfs) 8.952at u.98(Ms) Inflow Hydrographs time limit(Hs) 3o.ou SNrt_EkvmlKe) 486.0 Vd.(<y) P.P. ROUTED OUTFLOW a-yr a4-h Peak SCS TR-SS Storm Event disdurge(ds) 8.632 at 1a.00 Ms) fudge factor 1m me ino(minlhs) o.oa HYdIOgrapha 50ON.toWtua Outlet structure water levelRore 49).s4oat 74 lhrsl SlrlHyd09.Ph II lu routed t8.9 C.O.086. o Weir me limit AALo.00 3eval ROUTED OUTFLOW to-y01.1 a4-N PaaSCS TR-n.) Event storage(ry) ag43)4 HrdrSCSpho pakme(ch) 8.951 nor nfile0010W.cy) fir 72.9vah.dt schaw(ds) 26.829.35oa aa.oO11T w h Peak SCS TR-55 Storm Event peak timeChM u..4a Orifice diameter(in).Riser wlume(q) STa.95 water level 6.35o at u.aB(ors) ,,■ l� Irk SCSnpha name:Styr'♦-r volume BY) sua.34] erea(s0 ss0 side angle o00o routed we level(ft) 495.44art u.aB(hrs) V vo-yra4-hrPak SCS TR-SS Storm Event Aral 1 40085° diameter or depth(in) 4.50o TOO/SI) 3.30o time In hours trve stora9e(cy) 6..397 4 PVC SCREW CAP I� inflow(ds) s7.a73 at u.98(hs) HYdmCrapha width for rect.fin) Pc. Invert(h) 496.6A ON GRADE M disdurge(ds) a6.8v9rt ug8(Ns) Type a SCS coefficient 0.5m multiple a Hydrogrepha RM•09r+phi water level ffq 497.228...98 Oro rainfall P(In) 33a0 name:voryrl{-h Peak SCS TR-55 storm Event Cove ROUTED OUTFLOW as-yra{-hr Peak SCS TR-SS Storm E4erd th storage(cy) .13.599 me dc,0011(s) Area 4890 hmert(W 496.000 discharge Into ROUTED OUTFLOW so-yraf0 Peek SCS TR-55 Storm Event khawlds) a3.K9 at.-98(hs) 4•P V C NONPERFORATED Z ment(firs) o.a1ro CN moos muhipk� to (hl .76o time Ina(minlNs) o.oa 4...ge(ds) va.oa7rt Leda Ms) STANDPIPE (V b time increment o.oam ,�f or*.cod HkSCSTSh3 trnehmrt NS) 30.om Type a discharge o.50o time limh(minlhrs) 3o.m wager keel ffU 496.968rt u.y fhs) Tqr a5-Yra4-I)cft) STR-55 Storm Event fudge factor 100 rainfall P(in) 5.60o Outlet structure orifice area(0 4909 file:u YEAR..oshlmervels.dt storage(cy) 84.158 inflow(ds) a3.827at av98(1.) routed Poe time of cmc(1vs) o.aaoo volume(cy) a000 dischrge WO 23449at.98(hs) peek flow(ch) 8..ma t ,rcrement(hrs) o.oaao Orifice Outlet strutue3 routed Hydrogreph{ 1111111L1111/111111111111111/111 .:.- water levy(ft) 497.274.a1.98 Res) peak time 0,rs) 982 m Hme limit(hrs) 30.000 area CO) Culvert time in Boors true s0o-yr a4-hrPak SCS TR-SSStam Event Tea fs 0.vg6 me:Barrel r( *,E:1•`•:•Frr:t{:•:?2t::•:,i:•:v Rorage(q) 218685 wlume(q) aoao.245 fudge factor nor tie inflow(ds) 3T.975rt LL98(ors) i::A:''=:i -••::v:[;:• dlame[er or depth(In) 6.00o rrwitipk K "'=• •::i `:':#h ,T*),: Cr I routed true _ s Hydrogreph3 discharge a8.9a3 at u.o4/hs) 4i:%i;k;;ti i;:::• .:,{.:� width forrtct(in) discMge artddser Hydrognpht Peak flow(ds) v).a85 D In Cure wrtrkvel(fU t9).9a0at v.oa(ors) .;.;y{ti::::: i:::::'�v:4•: ,•:;'.;.;1.;:ti s}},.: CNI 0 aooir s4-hr Peak SCS TR-55 Storm Event peak time Urs) ss.98a coefficient o.50o hl 1 05 ROUTED OUTFLOW a5-yr a4-hr Peak 5CS TR-55 Storm Event eon9e(cy9 980.935 ) :•}••,F "•. :�•::•.....::n::::v::::n:i:.?:.:y:;j Q inflow cis (fU {9a.6)o (in) time 0.oa 0 iC:'• „1 - ( ) 33.9]Sat u.ge(firs) volume aa65�8a4 v Le tl ncr(minlhrs) ✓�A5,' +••-}USE 45`WYE AND FITTING OR i;;i W Q2 diu3arye OD 31663.sv980n) multiple 4 Length OD �� me limh(minlhrs) 30.0o EDUNA_ENT DIRECTIONAL :;<� discharge Into riser SIOpe 0. 4}. •{ water level(R) 497346at u.se Ne HYdmgrePh3 Manning,n eon time as YEAR-o.ol fir intwwh.ut '-') CLEANORS TO CONNECT •:•i; CNI z 3 ..ragelM Ga.u3 SCS Inlet cuff Ke o.su volume 2982.64 UNDERDRAIN TO STANDPIPE :66,. u lame:.5-yr.-Ir Peak SCS TR.,Storm Event Egwtbn constant set 3 rooted tme Hj; ,11 4 WATERTIGHT CAP l. Q' $:n't??3g:i W \Q\ J '�(am")now Invert time in hors bug ON TERMINAL ENO iP � K:, / . LEVEL 2 DRY SWALE#1 (W ae6.000 ': SCALE 1•=30' Type .W909.0 a OF PIPE sf,il:g. .,is iT• Outlet rtnxmxe4 LT > �f f'{•C. e'' -. ) o.affio time Wes) monoow name:Nt(T SplMay 'Opt'iMil p(SCS TRgS tam Event J W o`o lime of _._. .,\ - ;• 1: [ImeY h(hf) 3o.au kngtll(h) 45.ou Area(acres) �J .. rocoAPMs T.ou SCS r%::<'::':..: '2. ..c• Emergency V m sldeargk 63.430 FLOWMEM _ W 6 c (� \ ` cufficam 3000 0 C c \ �3 overt(k) {9)a5o time dcorc(firs) 2oo 's G peak flow Ns) multiple 1 time lncrtment(hrs) oaoau �� �;r8 PEVC./3FORAYED SCMU 40`�-- r` LL� b o PROPOSED \ me limit(firs) 30 ��III" PVC.UNOEADaP.IN +4��v 0 a fly" peak time(fin) 9Ba discharge through dam time / 'n LLI UNDERDRAINS vdumelM s986+59 V I, CSTORMCTEWER I�II� HAVEA MAXIMUMde SLOPE HWregrWh4 firdgrooted true sSLt 2e,SS R-Je' • I . - Q c IINI1 SCS peakflow(ds) oaoo 11�p nra:aao-yr a4JXPeak SOS4.850 seam Event peak time(Ns) 983 Am lama) 485o vohme(q) 4a6o.a5o O LU Z a i � CN AAPo Figure 9.8.1 l"PVC.CNarhout DaMll Z cQ 11 C e GUTTERS •OUTTALL oar. ll Type a G n CONCR HBLOIX., raMfall Ptrt) 9.su = 2 g DRAIN TO•RY"WALE VU i time d cone.Ms) • NPRETREATME (\:' time Increment ND oo?oa0o 71,w rn FlGI'RF.JA1 1• gp „y,y W U O 3 Technical Bulletin 7 Minimum Standard].O9 II i time MOT mrs) 30..0 «..,ewe.,Nww,n.;.ce.YwXr t',aml' rr _ fudge factor Lou rn• I W `- �, i I - rooted nu E Is' - peakeow/ds) �000 Y 5 +- peakme(hn) 98a �J6 1 1■n 1 _ volume fat <a6o.v5o '!� :``''' ''''- e ��:m r'1. ` _ ■ r Z J L� / 4 r-ne_ �L (�rIYaN�aalia 1 Jy1�0 1 -tl tit YwA-1'4tr ai4k, A -i'A Swale Nl Watershed(within Subarea 560 // 560 :g0O(/ sw.,w,J L "'""'" 1 " �� I� r W Dry ( 1 •t` r SPR ore 00 t'' T i IaOE00bncous01 n'h ensk Iis _� LU Attached Homes 1,625 s( 1 `TP=560.R1 r 1` ANKBERT Managed Turf 2,095 sf 8•GRATE INLET / INV IN:554.16(STIR 50) Nomata~ie se dd I n It f a I s.e _ ,~ ■ w a Total= 3,920 s( AT ELEV 558.5 INV OU7•553.90(STIR 46) _ I r,a,ai.a o w a. aD aL an_ 7 ' •vow. J 8'CLEANOl1T -' K..�a• w .un l�\- w O.Ili'6 x i rD'h I I.I. act.mtaa a. • wu{�" PNd e.MY7 et no DRY TREATMENT 91 SWALE DESIGN&REQUIREMENTS: `78 SSS •: p 1 y_ . aw !Who (n Treatment Volume(Per VRRM Calculations) 188 cf BgyyAl cat OF� pp zsiv.:•o_f•,r4". �owwT, r = to a es ?2 Ise b Minimum Treatment Volume Required 207 cf E 5580�- - - 000 `w•••a rote OR. BURKtr paAR 1::r� Z11 aOn :oO ( � •��^--!1 Minimum Surface Area Required(Tv/Storage Depth) 96 cf <-3'Mix at 25%porosity;3•pea gravel at 2%porosity, 6•S o PERF W� H. '`�°_ I ' I LLl - Surface Area Provided 436 c( 12•stone at 40%porosity&12•of ponding at 100% PVC UNDERDRAIN '• •°~ •`0 000 _T..R ® Y e Minimum'Approximate'Surface Area 31F1a%of CDA porosity SPACED 20'0.0 �0--�_ L 550 " FiMra, 0 E Surface Area Provided Relative to CDA 10.0% INV IN.554.75 a<4 s.Ruo Ys.i" „ar N P I I INV OUT.554.44 / a•••^r•• _T. ' NOTE Gutters shall outfall onto a concrete downspout splash dock where R shall flow to the dry Swale via the rear yard's grassy lawn 8•ADS PIPE _ `n' upland of the facility n$ INV IN 554.44 • .w.w.w_, M�wo nr rla ... AamRe 0 o INV OUT 554.36 c Ia1a:T NAM TOE oa4�N adwx�s awn R.•er4rea.con 0 CV STORMWATER MANAGEMENT MCIUTY GRADING Wc, N8 Lo-14.2';5�.50% • i J °a/ 4s wwwa. �w0aNearr gwacoa0.1 Pm arm �� o Dry Swale 1 =o_ ...t«•>.�,�rom iwar . e 6 , o Y Elevation Contours volume 10+00 10+50 11+0011+25 � - y� aa.s"`.� w,...•PA PO 700 No. (ft) (sf) Id) SCALE. R ElenUen ". .I .k�"e Y.= _ 092033 558 436 0 RAM wr•r a o•...�aa�.....o-ww r... •=.».°m"" 11 559 894 651 V:,•_S SWALE #1 / \sRRDI.ORS PR .e�laN .Ta1 3 I -a•- w-. sw;"HOI1 ,m SCALEo H.1=50' B1dP DEBRIS CAGE _ 560 1,409 1,793 - - - P. Parrs 4484.4.Dave(Crerle 8.44 va ,"(4-' Stott SHEET NO. 7 €c Section 6 - Pollution Prevention Plan A. Plan showing pollution activities and prevention practices SEE EXHIBIT SHEET. B. Sources of Pollutants, locations, and prevention practices Pollutant,or Pollutant Prevention Practices,Control Generating Activity Location on site Measures Organic and inorganic chemicals Metals Pesticides Household chemicals Gasoline Motor oil Battery acid Roadway salt C. Sources of Pollutants, continued. Common activities and minimum control and prevention practices Pollutant,or Pollutant Generating Activity Location on site Prevention Practices,Control Measures Follow Erosion and Sediment Control Plan. 1 Clearing,grading,excavating, Dispose of clearing debris at acceptable disposal and un-stabilized areas Land disturbance area sites.Seed and mulch,or sod within 7 days of land clearing Cover storm drain inlets and use drip pans and 1 Paving operations Roads and driveways absorbent/oil dry for all paving machines to limit leaks and spills Concrete washout and Current location and detail Direct concrete wash water into a leak proof cement waste shown on PPP container or leak-proof sediment basin that is designed so that no overflows can occur Enclose or cover material storage areas. Mix paint Structure construction,stucco, indoors in a containment area or in a flat unpaved painting, and cleaning Structures area.Prevent the discharge of soaps,solvents, detergents and wash water,paint,form release oils and curing compounds. Dewatering operations Dewatering of sediment Water shall be filtered,settled or similarly treated basins prior to discharge as shown on plan. Designated area shown on Designated areas for material delivery and storage. 1 Material delivery and storage plan Placed near construction entrances,away from waterways and drainage paths 1 Material use during building Building areas Follow manufacturer's instructions. MSDS's process attached. Pollutant,or Pollutant Location on site Prevention Practices,Control Measures Generating Activity Waste collection area will not receive a substantial amount of runoff from upland areas and does not • Solid waste disposal Current designated drain directly to a waterway. Containers have lids container areas on plan covered 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 ✓ Sanitary waste Current locations shown on facilities will be provided,and located away from plan waterways or inlets.Such facilities shall be regularly maintained. ✓ Landscaping operations Landscape areas shown on Apply fertilizers in accordance with manufacturer's plan recommendations and not during rainfall events To be treated in a sediment basin or better control Wash Waters Wash areas shown on plan as specified on plan. Minimize the discharge of ✓ pollutants from equipment and vehicle washing Vehicle and equipment washing Designated areas and details Provide containment and filtering for all wash shown on plan waters per the plan 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. D. Non-stormwater discharges Pollutants or Pollutant Location on Site Discharge Constituents N/A E. Persons responsible for pollution prevention practices DEVELOPER ALAN TAYLOR—RIVERBEND DEVELOPMENT 434.245.4970 alan@riverbenddev.com F. Response and reporting practices Spills will be immediately and promptly cleaned up by the contractor. Regular checks of equipment on site shall occur and any pollutants shall be stored properly to prevent spills. The following agency should be considered for notification in the case of a spill: Monticello Fire Department:434-972-4033 Albemarle County Police Department:434-977-9041 Charlottesville Health Department:434-972-6200 Virginia Department of Conservation&Recreation: 1-804-786-2094 Virginia Department of Environmental Quality: 1-540-574-7824 Virginia Department of Emergency Services: 1-800-468-8892 G. Pollution Prevention Awareness DEQ's Office of Pollution Prevention hosts a number of programs and initiatives that serve as a conduit for non- regulatory assistance to businesses and communities.The contractor will ensure that their team is trained and knowledgably aware of all measures in this document. Section 7 - Discharges to impaired waters, surface waters within an applicable TMDL wasteload allocation, and exceptional waters are http://ofmpub.epa.gov/watersl0/attains_waterbody.control?p_au_id=VAV-H 28R_M SC01A00&p_cycle=2010 o4`' Last updated on 11/18/2014 Watershed Assessment, Tracking & Environmental ResultS .1;4,2 t You are here: EPA Home Water WATERS Water Quality Assessment and TMDL Information Waterbody Quality Assessment ea Report 4t FA, Return to home page Features On This Page 2010 Waterbody Report for Moores Creek • About This Database • Causes of (Integrated Report) Impairment • Assessing Water Quality • Probable Sources (Questions and Answers) Contributing to • Integrated Reporting Impairments Guidance • Previous National Water State: Virginia Quality Reports Waterbody ID: VAV- • EnviroMapper for Water H28R_MSCO1A00 • AskWATERS Location: Moores Creek from its confluence with the • EPA WATERS Homepage Ragged Mountain Dam • Exchange Network receiving stream • Assessment Database downstream to its confluence with the Rivanna • Statewide Statistical River. Surveys State Waterbody Type: • How's My Waterway Local River Search tool EPA Waterbody Type: • Pollution Categories Rivers and Streams Summary Document Water Size: 6.37 • Nitrogen and Phosphorus Units: miles Click on the waterbody for an interactive map Pollution Data Access Tool Watershed Name: Rivanna (NPDAT) Waterbodv History Report Data are also available for these years: 2008 2006 2004 2002 Water Quality Assessment Status for Reporting Year 2010 The overall status of this waterbody is Impaired. Description of this table (Designated Use Designated Use Group Status Aquatic Life Fish, Shellfish, And Wildlife Protection And Propagation Impaired Fish Consumption Aquatic Life Harvesting Not Assessed Recreation Recreation Impaired Wildlife Fish, Shellfish, And Wildlife Protection And Propagation Good Causes of Impairment for Reporting Year 2010 Descri tion of this table Cause of Impairment Cause of Impairment Group Designated State TMDL Development Uses) Status Benthic Macroinvertebrates Cause Unknown - Impaired Aquatic Life TMDL needed Bioassessments Biota Escherichia Coli (E. Coli) Pathogens Recreation TMDL completed Fecal Coliform Pathogens Recreation ITMDL completed Probable Sources Contributing to Impairment for Reporting Year 2010 Descri tion of this table Probable Source Probable Source Group Cause(s) of Impairment Agriculture Agriculture Escherichia Coli (E. Coli); Fecal Coliform Municipal (Urbanized High Urban-Related Benthic Macroinvertebrates Bioassessments; Escherichia Coli (E. Density Area) Runoff/Stormwater Coli); Fecal Coliform Non-Point Source Unspecified Nonpoint Benthic Macroinvertebrates Bioassessments; Escherichia Coli (E. Source Coli); Fecal Coliform Wildlife Other Than Waterfowl Natural/Wildlife Escherichia Coli (E. Coli); Fecal Coliform Section 8 - Qualified Personnel The following personnel are responsible for inspections: SCOTT COLLINS, PE —COLLINS ENGINEERING PROJECT MANAGER 434.293.3719 scott@collins-engineering.com ALAN TAYLOR— RIVERBEND DEVELOPMENT DEVELOPER 434.245.4970 alan@riverbenddev.com 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." Operator Name: AVINITY ESTATES,LLC Company: v ,rt-}, L�C-- Title: Signature: Date: 125 Section 10 - Delegation of Authority Delegation of Authority I, (name),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 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: AVINITY ESTATES, LLC Company: /'t�^�-� �..-y , '[ �e Title: /'�- -ca rl oQ y'"yk'"' Signature: Date: 612 t t. Section 11 - General Permit copy fx 4s COMMONWEAL TH of VIRGINIA DEPARTMENT OF ENViRONMENI'AL 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 21 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 21 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 21 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 21 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 Ill 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 21 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 21 (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, that 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 21 (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 21 (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) Nutnents 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 21 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 21 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 21 (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 21 (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 21 (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 III 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 21 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 21 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 21 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 I 1 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 21 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 govem 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 21 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 21 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 21 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 21 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 Ill 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 Ill 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. Section 12 - Inspection Logs General Information (see reverse f+ r instructions) -. Name of Project CGP Tracking No. Inspection Date Inspector Name,Title& Contact Information Present Phase of Construction Inspection Location (if multiple inspections are required, specify location where this inspection is being conducted) Inspection Frequency(Note,you may be subject to different inspection frequencies in different areas of the site.Check all that apply ) Standard Frequency: ❑At least once every 5 business days ❑At least once every 10 business days and no later than 48 hours following a measureable storm event Increased Frequency: ❑At least once every 4 business days ❑ At least once every 5 business days and no later than 48 hours following a measureable storm event Reduced Frequency: - ❑ Once per month (for stabilized areas) - ❑ Once per month and within 24 hours of a 0.25" rain (for arid, semi-arid, or drought-stricken areas during seasonally dry periods or during drought) - ❑ Once per month (for frozen conditions where earth-disturbing activities are being conducted) Was this inspection triggered by a 0.25"storm event? El Yes ❑ No If yes, how did you determined whether a 0.25" storm event has occurred? ❑ Rain gauge on site ❑ Weather station representative of site.Specify weather station source: Total rainfall amount that triggered the inspection (in inches): Unsafe Conditions for Inspection Did you determine that any portion of your site was unsafe for inspection per CGP Part 4.1.5? ❑ Yes ❑ No If"yes",complete the following: - Describe the conditions that prevented you from conducting the inspection in this location: - Location(s) where conditions were found: Page 1 of 5 Instructions for Filling Out "General Information" Section Name of Project Enter the name for the project. CGP Tracking No. Enter the tracking number that was assigned to your NOI application for permit coverage. Inspection Date Enter the date you conducted the inspection. Inspector Name,Title& Contact Information Provide the name of the person(s) (either a member of your company's staff or a contractor or subcontractor) that conducted this inspection. Provide the inspector's name, title, and contact information as directed in the form. Present Phase of Construction If this project is being completed in more than one phase, indicate which phase it is currently in. Inspection Location If your project has multiple locations where you conduct separate inspections,specify the location where this inspection is being conducted. If only one inspection is conducted for your entire project, enter"Entire Site." If necessary, complete additional inspection report forms for each separate inspection location. Inspection Frequency Check the box that describes the inspection frequency that applies to you. Note that you may be subject to different inspection frequencies in different areas of your site.If your project does not discharge to a "sensitive water" (i.e., a water impaired for sediment or nutrients, or listed as Tier 2,2.5,or 3 by your state or tribe) and you are not affected by any of the circumstances described in CGP Part 4.1.4, then you can choose your frequency based on CGP Part 4.1.2-either weekly,or every other week and within 24 hrs of a 0.25 in storm event.For any portion of your site that discharges to a sensitive water,your inspection frequency for that area is fixed under CGP Part 4.1.3 at weekly and within 24 hrs of a 0.25 inch storm event. If portions of your site are stabilized, are located in arid, semi-arid, or drought-stricken areas,or are subject to frozen conditions, consult CGP Part 4.1.4 for the applicable inspection frequency. Check all the inspection frequencies that apply to your project. Was This Inspection Triggered by a 0.25 Inch Storm Event? If you were required to conduct this inspection because of a 0.25 inch (or greater) rain event, indicate whether you relied on an on-site rain gauge or a nearby weather station (and where the weather station is located). Also,specify the total amount of rainfall for this specific storm event. Unsafe Conditions for Inspection Inspections are not required where a portion of the site or the entire site is subject to unsafe conditions.See CGP Part 4.1.5.These conditions should not regularly occur, and should not be consistently present on a site. Generally, unsafe conditions are those that render the site (or a portion of it) inaccessible or that would pose a significant probability of injury to applicable personnel. Examples could include severe storm or flood conditions, high winds, and downed electrical wires. If your site, or a portion of it,is affected by unsafe conditions during the time of your inspection, provide a description of the conditions that prevented you from conducting the inspection and what parts of the site were affected. If the entire site was considered unsafe,specify the location as "Entire site" Condition and Effectiveness of Erosion and Sediment(E&S) Controls (CGP Part 2.1) (see reverse for instructions) Type/Location of E&S Control Repairs or Corrective Date on Which Notes [Add an additional sheet if Other Action Maintenance or necessary] Maintenance Required?* Corrective Action First Needed?* Identified? 1. DYes ❑No DYes ❑No 2. DYes ❑No DYes ❑No 3. DYes ❑No Dyes ❑No 4. DYes ❑No DYes ❑No 5. ['Yes ❑No Dyes ❑No 6. DYes ❑No DYes ❑No 7. ['Yes ❑No Dyes ❑No 8. DYes ❑No Dyes ❑No 9. DYes ❑No Dyes ❑No 10. ['Yes ❑No Dyes ❑No * Note:The permit differentiates between conditions requiring repairs and maintenance, and those requiring corrective action.The permit requires maintenance in order to keep controls in effective operating condition and requires repairs if controls are not operating as intended. Corrective actions are triggered only for specific, more serious conditions,which include: 1) A required stormwater control was never installed,was installed incorrectly,or not in accordance with the requirements in Part 2 and/or 3; 2) You become aware that the stormwater controls you have installed and are maintaining are not effective enough for the discharge to meet applicable water quality standards or applicable requirements in Part 3.1;3) One of the prohibited discharges in Part 2.3.1 is occurring or has occurred;or 4) EPA requires corrective actions as a result of a permit violation found during an inspection carried out under Part 4.2.If a condition on your site requires a corrective action, you must also fill out a corrective action form found at www.epa.gov/npdes/stormwater/swpop.See Part 5 of the permit for more information. Page 2 of 5 Instructions for Filling Out the "Erosion and Sediment Control" Table Type and Location of EBBS Controls Provide a list of all erosion and sediment (E&S) controls that your SWPPP indicates will be installed and implemented at your site.This list must include at a minimum all E&S controls required by CGP Part 2.1.2. Include also any natural buffers established under CGP Part 2.1.2.1. Buffer requirements apply if your project's earth-disturbing activities will occur within 50 feet of a surface water.You may group your E&S controls on your form if you have several of the same type of controls (e.g., you may group "Inlet Protection Measures", "Perimeter Controls",and "Stockpile Controls" together on one line),but if there are any problems with a specific control, you must separately identify the location of the control,whether repairs or maintenance or corrective action are necessary,and in the notes section you must describe the specifics about the problem you observed. Repairs or Other Maintenance Needed? Answer"yes" if the E&S control requires a repair of any kind (due to normal wear and tear,or as a result of damage) or requires maintenance in order for the control to continue operating effectively.At a minimum, maintenance is required in the following specific instances: (1) for perimeter controls,whenever sediment has accumulated to or more the above-ground height of the control (CGP Part 2.1.2.2.b); (2) where sediment has been tracked-out onto the surface of off-site streets or other paved areas (CGP Part 2.1.2.3.d); (3) for inlet protection measures,when sediment accumulates,the filter becomes clogged, and/or performance is compromised (CGP Part 2.1.2.9.b); and (4) for sediment basins, as necessary to maintain at least V2 of the design capacity of the basin (CGP Part 2.1.3.2.b).Note: In many cases, "yes" answers are expected and indicate a project with an active operation and maintenance program. You should also answer"yes" if work to fix the problem is still ongoing from the previous inspection. Corrective Action Needed? Answer"yes" if during your inspection you found any of the following conditions to be present (CGP, Part 5.2.1): (1) a required E&S control was never installed,was installed incorrectly, or not in accordance with the corresponding CGP Part 2 or 3 requirement; (2) you become aware that the inadequacy of the E&S control has led to an exceedance of an applicable water quality standard; or(3) EPA requires corrective action for an E&S control as a result of a permit violation found during an inspection carried out under Part 4.2. If you answer"yes",you must take corrective action and complete a corrective action report, found at www.epa.gov/npdes/stormwater/swoon.Note: You should answer "yes" if work to fix the problem from a previous inspection is still ongoing. Date on Which Maintenance or Corrective Action First Identified? Provide the date on which the condition that triggered the need for maintenance or corrective action was first identified. If the condition was just discovered during this inspection, enter the inspection date. If the condition is a carryover from a previous inspection, enter the original date of the condition's discovery. Notes For each E&S control and the area immediately surrounding it, note whether the control is properly installed and whether it appears to be working to minimize sediment discharge. Describe any problem conditions you observed such as the following, and why you think they occurred as well as actions (e.g., repairs, maintenance, or corrective action) you will take or have taken to fix the problem: 1.Failure to install or to properly install a required E&S control 2.Damage or destruction to an E&S control caused by vehicles,equipment, or personnel, a storm event,or other event 3.Mud or sediment deposits found downslope from E&S controls 4.Sediment tracked out onto paved areas by vehicles leaving construction site 5.Noticeable erosion at discharge outlets or at adjacent streambanks or channels 6.Erosion of the site's sloped areas (e.g., formation of rills or gullies) 7.E&S control is no longer working due to lack of maintenance For buffer areas, make note of whether they are marked off as required,whether there are signs of construction disturbance within the buffer, which is prohibited under the CGP, and whether there are visible signs of erosion resulting from discharges through the area. If repairs, maintenance, or corrective action is required, briefly note the reason. If repairs, maintenance, or corrective action have been completed, make a note of the date it was completed and what was done.If corrective action is required, note that you will need to complete a separate corrective action report describing the condition and your work to fix the problem. Condition and Effectiveness of Pollution Prevention (P2) Practices(CGP Part 2.3) (see revers for instructions) Type/location of P2 Practices Repairs or Corrective Date on Which Notes [Add an additional sheet if Other Action Maintenance or necessary] Maintenance Required?* Corrective Action Needed?* First Identified? 1. Dyes ❑No ['Yes ❑No 2. ['Yes ❑No ['Yes ❑No 3. DYes ❑No ['Yes ❑No 4. DYes ❑No DYes ❑No 5. ['Yes ❑No Dyes ❑No 6. ['Yes ❑No Dyes ❑No 7. Dyes ❑No ['Yes ❑No 8. DYes ❑No DYes ❑No 9. DYes ❑No DYes ❑No 10. ['Yes ❑No Dyes ❑No * Note:The permit differentiates between conditions requiring repairs and maintenance, and those requiring corrective action.The permit requires maintenance in order to keep controls in effective operating condition and requires repairs if controls are not operating as intended. Corrective actions are triggered only for specific, more serious conditions, which include: 1) A required stormwater control was never installed,was installed incorrectly, or not in accordance with the requirements in Part 2 and/or 3; 2) You become aware that the stormwater controls you have installed and are maintaining are not effective enough for the discharge to meet applicable water quality standards or applicable requirements in Part 3.1; 3) One of the prohibited discharges in Part 2.3.1 is occurring or has occurred;or 4) EPA requires corrective actions as a result of a permit violation found during an inspection carried out under Part 4.2. If a condition on your site requires a corrective action, you must also fill out a corrective action form found at www.eoa.aov/nodes/stormwater/swoop.See Part 5 of the permit for more information. Page 3 of 5 Instructions for Filling Out the "Pollution Prevention (P2) Practice" Table Type and Location of P2 Controls Provide a list of at pollution prevention (P2) practices that are implemented at your site.This list must include all P2 practices required by Part 2.3.3, and those that are described in your SWPPP. Repairs or Other Maintenance Needed? Answer"yes" if the P2 practice requires a repair of any kind (due to normal wear and tear,or as a result of damage) or requires maintenance in order for the control to continue operating effectively.Note: In many cases, "yes"answers are expected and indicate a project with an active operation and maintenance program. Corrective Action Needed? Answer"yes" if during your inspection you found any of the following conditions to be present (CGP, Part 5.2.1): (1) a required P2 practice was never installed,was installed incorrectly,or not in accordance with the corresponding CGP Part 2 requirement; (2) you become aware that the inadequacy of the P2 practice has led to an exceedance of an applicable water quality standard; (3) one of the "prohibited discharges" listed in CGP Part 2.3.1 is occurring or has occurred, or (4) EPA requires corrective action for a P2 practice as a result of a permit violation found during an inspection carried out under Part 4.2. If you answer"yes",you must take corrective action and complete a corrective action report (see www.epa.gov/nodes/stormwater/swoon). Note: You should answer"yes" if work to fix the problem from a previous inspection is still ongoing. Date on Which Maintenance or Corrective Action First Identified? Provide the date on which the condition that triggered the need for maintenance or corrective action was first identified. If the condition was just discovered during this inspection, enter the inspection date. If the condition is a carryover from a previous inspection, enter the original date of the condition's discovery. Notes For each P2 control and the area immediately surrounding it, note whether the control is properly installed,whether it appears to be working to minimize or eliminate pollutant discharges, and whether maintenance or corrective action is required. Describe problem conditions you observed such as the following,and why you think they occurred, as well as actions you will take or have taken to fix the problem: 1.Failure to install or to properly install a required P2 control 2.Damage or destruction to a P2 control caused by vehicles,equipment, or personnel, or a storm event 3.Evidence of a spill,leak,or other type of pollutant discharge, or failure to have properly cleaned up a previous spill, leak,or other type of pollutant discharge 4.Spill response supplies are absent, insufficient, or not where they are supposed to be located 5.Improper storage, handling, or disposal of chemicals, building materials or products, fuels, or wastes 6.P2 practice is no longer working due to lack of maintenance If repairs, maintenance, or corrective action is required,briefly note the reason. If repairs, maintenance, or corrective action have been completed, make a note of the date it was completed and what was done.If corrective action is required, note that you will need to complete a separate corrective action report describing the condition and your work to fix the problem. Stabilization of Exposed Soil (CGP Part 2.2) (see reverse for instructions) Stabilization Area Stabilization Method Have You Initiated Notes [Add an additional sheet if Stabilization? necessary] 1. ❑YES ❑ NO If yes, provide date: 2. ❑ YES ❑ NO If yes, provide date: 3. ❑YES ❑ NO If yes, provide date: 4. ❑ YES ❑ NO If yes, provide date: 5. ❑YES ❑ NO If yes, provide date: Description of Discharges (CGP Part 4.1.6.6) (see reverse for instructions) Was a stormwater discharge or other discharge occurring from any part of your site at the time of the inspection? ❑ Yes ❑ No If "yes", provide the following information for each point of discharge: Discharge Location Observations [Add an additional sheet if necessary] 1. Describe the discharge: At points of discharge and the channels and banks of surface waters in the immediate vicinity, are there any visible signs of erosion and/or sediment accumulation that can be attributed to your discharge? ❑ Yes ❑ No If yes, describe what you see,specify the location(s) where these conditions were found,and indicate whether modification, maintenance, or corrective action is needed to resolve the issue: 2. Describe the discharge: At points of discharge and the channels and banks of surface waters in the immediate vicinity,are there any visible signs of erosion and/or sediment accumulation that can be attributed to your discharge? ❑ Yes ❑ No If yes,describe what you see,specify the location(s) where these conditions were found,and indicate whether modification, maintenance, or corrective action is needed to resolve the issue: Page 4 of 5 Instructions for Filling Out the "Stabilization of Exposed Soil" Table Stabilization Area List all areas where soil stabilization is required to begin because construction work in that area has permanently stopped or temporarily stopped (i.e.,work will stop for 14 or more days), and all areas where stabilization has been implemented. Stabilization Method For each area, specify the method of stabilization (e.g., hydroseed, sod, planted vegetation,erosion control blanket, mulch,rock). Have You Initiated Stabilization For each area, indicate whether stabilization has been initiated. Notes For each area where stabilization has been initiated,describe the progress that has been made, and what additional actions are necessary to complete stabilization. Note the effectiveness of stabilization in preventing erosion. If stabilization has been initiated but not completed,make a note of the date it is to be completed. If stabilization has been completed, make a note of the date it was completed. If stabilization has not yet been initiated, make a note of the date it is to be initiated, and the date it is to be completed. Instructions for Filling Out the "Description of Discharges" Table You are only required to complete this section if a discharge is occurring at the time of the inspection. Was a Stormwater Discharge Occurring From Any Part of Your Site At The Time of the Inspection? During your inspection, examine all points of discharge from your site, and determine whether a discharge is occurring. If there is a discharge, answer"yes"and complete the questions below regarding the specific discharge. If there is not a discharge,answer "no"and skip to the next page. Discharge Location (repeat as necessary if there are multiple points of discharge) Location of discharge. Specify the location on your site where the discharge is occurring.The location may be an outlet from a stormwater control or constructed stormwater channel,a discharge into a storm sewer inlet, or a specific point on the site. Be as specific as possible;it is recommended that you refer to a precise point on your site map. Describe the discharge. Include a specific description of any noteworthy characteristics of the discharge such as color; odor;floating,settled,or suspended solids; foam; oil sheen; and other obvious pollution indicators. Are there visible signs of erosion or sediment accumulation? At each point of discharge and the channel and streambank in the immediate vicinity,visually assess whether there are any obvious signs of erosion and/or sediment accumulation that can be attributed to your discharge. If you answer"yes",include a description in the space provided of the erosion and sediment deposition that you have found, specify where on the site or in the surface water it is found, and indicate whether modification, maintenance, or corrective action is needed to resolve the issue. Contractor or Subcontractor Certification and Signature (see reverse for instructions} "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 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." Signature of Contractor or Subcontractor: Date: Printed Name and Affiliation: Certification and Signature by Permittee • � ; (see reverse for instructions) • "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 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." Signature of Permittee or "Duly Authorized Representative": Date: Printed Name and Affiliation: Page 5 of 5 Instructions for Signature/Certification Each inspection report must be signed and certified to be considered complete. Contractor or Subcontractor Signature and Certification Where a contractor or subcontractor is relied on to carry out the inspection and complete the inspection report,you should require the inspector to sign and certify each report. Note that this does not relieve the permitted operator of the requirement to sign and certify the inspection report as well. Signature and Certification by Permittee At a minimum, the inspection report must be signed by either(1) the person who signed the NOI,or (2) a duly authorized representative of that person.The following requirements apply to scenarios (1) and (2): If the signatory will be the person who signed the NOI for permit coverage, as a reminder, that person must be one of the following types of individuals: • For a corporation:A responsible corporate officer. For the purpose of this subsection, 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-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 which 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 environmental 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 permit application requirements;and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures. • For a partnership or sole proprietorship:A general partner or the proprietor, respectively. • For a municipality, state, federal, or other public agency: Either a principal executive officer or ranking elected official.For purposes of this subsection, a principal executive officer of a federal 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 (e.g., Regional Administrator of EPA). If the signatory will be a duly authorized representative, the following requirements must be met: • The authorization is made in writing by the person who signed the NOI (see above); • 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 company. (A duly authorized representative may thus be either a named individual or any individual occupying a named position);and • The signed and dated written authorization is included in the SWPPP.A copy must be submitted to EPA,if requested.