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HomeMy WebLinkAboutWPO202000039 VSMP - SWPPP 2022-10-20of AL COUNTY OF ALBEMARLE Department of Community Development 401 McIntire Road, North Wing Charlottesville, Virginia 22902-4596 k Tel. (434) 296-5832 • Fax (434) 972-4126 �'rRGiNZP Stormwater Pollution Prevention Plan (SWPPP) For Construction Activities At: Project Name: Crozet Elementary School Addition, Renovation and Site Improvements WP02020-00039 1407 Crozet Avenue Crozet, Virginia 22932 Prepared by: Timmons Group 608 Preston Avenue, Suite 200 Charlottesville, VA 22903 Contact: Craig Kotarski, P.E. 434.327.1688 Prepared for: Albemarle County School Board 401 McIntire Road Charlottesville, VA 22902 Contact: Matt Wertman 434.975.9340 SWPPP Preparation Date: August 10, 2020 Revised: October 20, 2022 APPROVED by the Albemarle County Community Development Department Date 10/21/2022 File WP0202000039—Amendment #2 Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County (This document is to be made publicly available according to 9VAC25-880-70, Part II, section D) CONTENTS: (from Albemarle County Code Sec. 17-405) 1. Registration statement 2. Notice of general permit coverage 3. Nature of activity 4. Erosion and Sediment Control Plan 5. Stormwater Management Plan 6. Pollution Prevention Plan 7. Discharges to impaired waters, surface waters within an applicable TMDL wasteload allocation, and exceptional waters 8. Qualified personnel 9. Signed Certification 10. Delegation of authority 11. General permit copy 12. Inspection logs 13. Approved Drawings/Plans Issued — 10/2022 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 1. Registration statement (Provide a signed completed copy of the DEQ registration statement) Issued — 10/2022 Stonnwater Pollution Prevention Plan (SWPPP) Albemarle County VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY GENERAL VPDES PERMIT FOR DISCHARGES OF STORMWATER FROM CONSTRUCTION ACTIVITIES (VAR10) REGISTRATION STATEMENT 2019 Application type. D NEW PERMIT ISSUANCE (CHOOSE ONE) ® MODIFICATION WITH ACREAGE INCREASE ❑ MODIFICATION WITHOUT ACREAGE INCREASE ❑ EXISTING PERMIT RE -ISSUANCE Section I. Operator/Permittee Information. PERMIT #: PLAN/ID #: TECHNICAL CRITERIA: IIB ❑ IIC ❑ A. Construction Activity Operator (Permittee). The person or entity that is applying for permit coverage and will have operational control over construction activities to ensure compliance with the general permit. A person with signatory authority for this operator must sign the certification in Section V. (per Part III. K. of the VAR10 Permit). Operator Name: Albemarle County School Board Contact person: Matt Wertman Address: 401 McIntire Road City, State and Zip Code: Charlottesville, VA 22902 Phone Number: (434) 975 - 9340 Primary and CC Email: mwertman@kl2albemarle.org B. Electronic correspondence. To receive an emailed coverage letter or to pay by credit card, you must choose YES and include a valid email. May we transmit correspondence electronically? YES ❑O NO ❑ Section It. Construction Activity Information. A. Include a site map showing the location of the existing or proposed land -disturbing activities, the limits of land disturbance, construction entrances and all waterbodies receiving stormwater discharges from the site. B. Project site location information. Construction Activity Name: Crozet Elementary School Addition, Renovation & Site Improvements Address: 1407 Crozet Avenue City and/or County and Zip Code: Crozet, VA 22932 Construction Activity Entrance Location (description, street address and/or latitude/longitude in decimal degrees): Entrances located off of Crozet Avenue Latitude and Longitude (6-digit, decimal degrees format): 38.074714,-78.696883 C. Acreage totals for all land -disturbing activities to be included under this permit coverage. Report to the nearest one -hundredth of an acre. Total land area of development (include entire area to be disturbed as approved in the Stormwater Management Plan): 7.65 acres (5.41 acres previously approved) Primary estimated area to be disturbed (include portions with Erosion and Sediment Control Plan approval only): 7.65 acres (5.41 acres previously approved) Off -site estimated area to be disturbed (if applicable): N/A D. Property Owner Status: FEDERAL ❑ STATE ❑ PUBLIC O PRIVATE ❑ E. Nature of the Construction Activity Description (i.e. commercial, industrial, residential, agricultural, environmental, utility): Education F. Municipal Separate Storm Sewer System (MS4) name(s) (if the site is discharging to a MS4): G. Estimated Project Dates (MM/DD/YYYY). Start Date: 11/01/2022 Completion Date: 02/01/2023 H. Is this construction activity part of a larger common plan of development or sale? YES ❑ NO Rev 11/2020 PAGE 1 16 CONSTRUCTION GENERAL PERMIT (VAR10) REGISTRATION STATEMENT 2019 I. 6" Order Hydrologic Unit Code (HUC) and Receiving Water Name(s). Include additional areas on a separate page. HUC NAME(S) OF RECEIVING WATERBODY 020802040102 Mechums River - Beaver Creek Section III. Off -site Support Activity Location Information. List all off -site support activities and excavated material disposal areas being utilized for this project. Include additional areas on a separate page. Off -site Activity Name: N/A Address: City or County: Off -site Activity Entrance Location (description, street address and/or latitude/longitude in decimal degrees): Latitude and Longitude (6-digit, decimal degrees format): Is this off -site activity an excavated material disposal area? YES ❑ NO ❑ If this off -site activity is an excavated material disposal area, list the contents of the excavated fill material: Willa separate VPDES permit cover this off -site activity? YES ❑ NO ❑ Section IV. Other Information. A. A stormwater pollution prevention plan (SWPPP) must be prepared in accordance with the requirements of the General VPDES Permit for Discharges of Stormwater from Construction Activities prior to submitting the Registration Statement. By signing the Registration Statement, the operator is certifying that the SWPPP has been prepared. B. Has an Erosion and Sediment Control Plan been YES © NO ❑ submitted to the VESC Authority for review? Erosion and Sediment Control Plan Approval Date (for Originally approved 3/18/2021 the estimated area to be disturbed MM/DD/YYYY): C. Has land -disturbance commenced? YES ❑x NO ❑ D. Annual Standards and Specifications. If this project is utilizing approved Annual Standards and Specifications (AS&S), attached the completed AS&S Entity Form. AS&S Entity Name (if different from the Operator identified in Section I): E. Billing information (leave blank if same as the Operator identified in Section I. above). This entity will receive Annual Permit Maintenance and Permit Modification Fee invoices (if applicable). Billing Name: Contact Name: Address: City, State and Zip Code: Phone Number: Primary and CC Email: Rev 11/2020 PAGE 2 16 CONSTRUCTION GENERAL PERMIT (VAR10) REGISTRATION STATEMENT 2019 Section V. Certification. A person representing the operator as identified in Section I. A. and meeting the requirements of 9VAC25-880-70. Part III. K must physically sign this certification. A typed signature is not acceptable. Please note thal operator is defined in 9VAC25-870-10 as follows: "Operator" means the owner or operator of any facility or activity subject to the Act and this chapter. In the context of stormwater associated with a large or small construction activity, operator means any person associated with a construction project that meets either of the following two criteria: (I) the person has direct operational control over construction plans and specifications, including the ability to make modifications to those plans and specifications or (ii) the person has day-to-day operational control of those activities at a project that are necessary to ensure compliance with a stormwater pollution prevention plan for the site or otherstate permit or VSMP authority permit conditions (i.e., they are authorized to direct workers at a site to carry out activities required by the stormwater pollution prevention plan or comply with other permit conditions). In the context of stormwater discharges from Municipal Separate Storm Sewer Systems (M545), operator means the operator of the regulated M54 system. 9VAC25-880-70. Part III. K. Signatory Requirements. Registration Statement. All Registration Statements shall be signed as follows: a. For a corporation: by a responsible corporate officer. For the purpose of this chapter, a responsible corporate officer means: (i) a president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy -making or decision -making functions for the corporation; or (ii) the manager of one or more manufacturing, production, or operating facilities, provided the manager is authorized to make management decisions that govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long-term compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for state permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures; b. For a partnership or sole proprietorship: by a general partner or the proprietor, respectively,- or c. For a municipality, state, federal, or other public agency: by either a principal executive officer or ranking elected official. For purposes of this chapter, a principal executive officer of a public agency includes: (i) the chief executive officer of the agency or (ii) a senior executive officer having responsibility for the overall operations of a principal geographic unit of the agency. Certification: "I certify under penalty of law that I have read and understand this Registration Statement and that this document and all attachments were prepared in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief true, accurate. and complete. I am aware that there are significant penalties for submitting false information including the possibility of fine and imprisonment for knowing violations." Printed Name: Signature (signed in ink): Date Signed: C. Matthew Wertman, Deputy Director of Building Services Section VI. Submittal Instructions. Submit this form to the VSMP Authority. If the locality is the VSMP Authority, please send your Registration Statement submittal directly to the locality; do NOT send this form to DEQ. A list of local VSMP Authorities is available here: VSMP Authorities. If DEQ is the VSMP Authority please send to: If the locality is the VSMP Authority, please send to: Department of Environmental Quality Office of Stormwater Management Suite 1400 PO Box 1105 Richmond VA 23218 constructiongp@deg.virginia.gov 114 S-1-1, I]V*;1 ViIW111 k4iI-I dI iraePrUri.DrJ[=Fx7 Community Development Department 401 McIntire Road North Wing Charlottesville, VA 22902 Rev 1112020 PAGE 3 16 Section 2. Notice of general permit coverage (This notice is to be posted near the main entrance according to 9VAC25-880-70, Part II, section C.) (Provide a copy of the DEQ coverage letter when obtained) Issued — 10/2022 Stonnwater Pollution Prevention Plan (SWPPP) Albemarle County Section 3. Nature of activity (Provide a detailed narrative of the construction activities. Include or reference a construction schedule and sequence. Include any phasing.) This project includes the construction of three additions to an existing elementary school building for expanded kitchen space, gym space, and classroom space. Additionally, the project includes the construction of a modified bus loop, additional surface parking, and associated site, utility, drainage, and landscape improvements. Limits of clearing and grading are 7.65 acres. The property is located in Crozet, Virginia, bound by Crozet Avenue to the west, a residential parcel and Waal farmland to the north, farmland to the east, and residential parcels to the south. All construction shall take place in accordance with the Erosion and Sediment Control Sequence of Installation on plan sheet C3.0. Estimated construction dates are as indicated on the Registration Statement. Issued — 10/2022 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 4. Erosion and Sediment Control Plan. (Provide a reduced, 1 W 7 copy of the latest Erosion and Sediment Control Plan. 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NUL TEM PORARY EROSION AND SEDIMENT mXTRO MEASURES SIWL AS REMOVED WITHIN 50 OAKS AFTER FINAL SM STABILIZATION OR AFTER THE TERAGAGRAM SURFS ARE M LONGER BECAME RLLSSS SCHEMES AUTHORIZED DEPOSITION LEGAL RYMF URa SMUBEEPEMwSEDIMENTNiY[ EDVro rWM MEOAL R GRESIONANDDSMINFUrsATION. xsDEPOSITION, MUSEUM EAS CONFINEMENT FROM gRTnSUCCEEDED SIDES SOUND. BE TNDDA"GEMEENrnoVALCMKMP�OFSED�MWATE URBANKRAFT MR TIME BURNED UORE<oNoIMNEW EFFORTS MATED IN SECTION 19 OF VIBRAGWA ADMINISTRATIVE CODE KABACE25 SHOW MINIMUM STANDARDS. • IF ! �• TIMMONS GROUP TOUR VISION ACHIEVED THROUGH SURS 11-71. marle Co Public Schools CROZET ELEMENTARY SCHOOL ADDITION, RENOVATION AND SITE IMPROVEMENTS 1107CwARGR..C. VA2GB2 KDOE RgeA NulbT 001J140,101 Y1ANflO1BEl FliObT 1281 CIA. BY B. CICHOCKI DRBi0De0 BY K.ROESER DONE BY K.ROESER AFEASSANDREASUPPRED NO SUBMITTAL NATE WAR) AMISMSIDES. ED.,. S HANAMEENUMETTIN ON SEEN AVOIDING... 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YOS OFFMEAT�EREN ROLL JUNCTION... \ TaEDIMEMFILIER ^M aT.,a: PERSPECTIVES. ARTIC z��HUa�µOFEEaTE�APAURAP�wTEoU=I BASSET ON m vorsioxEEGRImaroHz. HE M,...E LT.U.,TRANNERFORMTERS r� W OE-rnRn S tlITF91ME6iNE Mn%IMW 6IONEDIPN R, aVi NOi1E65iXPN8 O MxWHCH� IRECTENTI I / UTLPROTECTION mE= �}` xx mW°* Noma ELEVANTURNOFSTANDE AND IC TATION FxIBSIuEmDTax°Iowo Rl oreoTPEurngxmlpamPRl<uxEwxERmE W)W„ERETHE MEET SHEET OROVERHANDDF'EOM(NNOTmixul E%SUITSRCE6 ECEM GOCp1�CETRATED ROOM SUCµH P5M STRREET QQQ ❑QQ El LY �H_ }}�]]9 a. E j'� .-vPR.-.-veR.-� (' 1—I 'R, ___I oRXIGXwAV MmINIsNNL . STa"WREOFAMEVIUtt Ore TRGrnOry �,•� °n ERUEe[uemgmFFRIL—wrtuT[ O O FENCE ATTACHED TO nimaWEATUEK NET iREES RUNS,CI, AT aar 47 MOVE FIN BIT WITH EEP ER T, Lo Ya..y iO THE vaoNO �RwEro,m,.ERi.�Ru.mRF.w° OFErvwrsaTREE uu FENCE°ENTIRm O O-�ylrLY IZA/TTIONN O O �m �.q=.= O x. TREE PROTECTION SOIL STABILI BLANKET REATMENT-1 STORMWATER INLEF PROTECTION pgOF3 TABLE Osa - RGXT-OF-wn�v Noxewmus Mx- mrvM I xwT/xEuoem' E GT � E�DERCRCLRireus ERCCiRENEPHALREG ar ER PUNrx m UL sFnT.tFm 11 EE BNENCE NAVUca. FREEPxcREDFEScuE IRE ANN. ILttE......... OTHER 36Po% EE. sggEGRn551.'IN IRSTTRALLSE.IS (iwFmmE) m —THIOmFFEWIF —F-L . DEFFENul8 )RYS FmH6esRrvrvECARE -n RTtERAw 0.CTUMJANT-FLOR°MI znmx FEV53 nMOTHv cLMhtH.m cuVr 12wx LOVER azs Puu MUCH PUG aH ET m WEEwwrnemw.w 16ER% AUTPUR Ham ISEitaw PLLCA) IPMESDSv-a BUSH6 v1, — - OO O xvEcoYrvPE xvEmTv"FES A. AOAISTUALAS RECTOP BW m I�aFanV[vrnITD TEMPORARY SEEDING PLANT MATERIALS _ 1UUX MIX PR CE LBB Oue sA.w $E iION A A aFEA xtAE WQA^ IAHUOPFH XGS MA^W EOMEN m'EENNIS°yarvmm I.E.M.ca M.rn.ww N x S ,, NX1n mzTURESS TNEMOVERTOLANNUM GRaaaESA"OLYOVERARECA]OF POODWU OPBETXGS NEWER E PART ALLY BUCT TO CLASSESDEN SEES M%°R AMIDNEWuDFUNCTIO THE °°""°'"" "" `"'"°"°°x". PAVED WASH RACK SITE SPECIFIC BECOMES FOR PIEnMAXU REa ENINUMUCESSELOWNTmALLB RESCUE �oME FHRMu%u Mn CLAUSE SOUND " UT O DER EFPaWreEE"'S.,Tlax O RENTUCKY awEGRASS SLOPE STABILIZATION SEED MIX SILT FENCE (W/O WIRE SUPPORT) O PAVED CONSTRUCTION ENTRANCE SILT FENCE CUL INLET ABSORPTION �Tsuocv Ate SELEs. rvowAL 16RT xoPE Lav-mnmiFN.Nw 6TEPERTNna I EMPOHURY RIGXT-°F-WnY DIVERSIONS . - - ' U6ESEWONALNUNSECRCPIXa000RMJ6EWITHSFEDING0PFE6 0.93TATEDBELMV. GXMRL FEBRDARY 1BiHTXRD - - _.. FO%TRUMLIET Y 15TTHRC7HROUS U6 DATE Nw�,aER,HRDD� D,arH� WINTER RYE -aDBsi�rpiMAY7HRROPENSSEPORMANNE URUS`E`FULL SEERIDEARIL oixEre Rrelaos, sEHMHGUEoseRleFn). IF ea GUSEUMUEu PERSPECTIVEFILL rIEHY TCE OF FR°w aTgVPRO EMSWIPIENT FENCE LR�W Ixenox OFTERNARMSETTKINCREAUSERALRETONCLULLACHE MUST BE PROPERLY RECOURSES) NEEDED LWASSEEMS MAY SE ,YPIcuGPAvELS RurnIRE AUDECTCAN IxGWNwERm MENDING PERIooa,>OD HDmLas.WwE IN MEET R �B w V V O O O OO PEI�Tmix,E VlEww@ PEEIRSPE<TI EVIEw O DIRREADEFS.ES CDRMECTEDawUR�GR VIElOCITV GFRGV RIPROP O TEMPORARY RIGHT-OF-WAY DVERSION PERMANENT SEEDING MIX FOR PIEDMONT AREA 1SAFETY FENCE CULVERT INLET PROTECTION I vmDO TIMMYOUR MISIG"ONSACHIEVEoGROURP arle County Public Schools CROZET ELEMENTARY SCHOOLADDITION, RENOVATION AND SITE IMPROVEMENTS 1407 Q°stArznux, Cmml, VAY VCOEPERANNI 002 1 101 VMDORgWNumMr 1284 !On; Cn ORMA, B. CICHOCKI USES'. RS K.ROESER POWERS K.ROESER DEARMANDRUMMONS MENNI AL SAFE �O FERES97EPLARRESUBMISSIDNIT SIT PER EEC nSSITE PER AMExmervTY SHAHS I.TS! 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TP - _ ifi / "x4'3 alyc / _ _ TP /] I �II �� --. -_- x _ ��sF- OR _ LBE- II°w \`YGFGNAIII x:a':H`nxa ROAMISSIGNIT I II II j4 �\ ENMwTAR nNox"UwNORENT wN n.wcusraze , � ,rc -- -��- ;iii T `_ - � / �� w EROSION SEDIMENT - \ E°G ■1_ Y. CONTROOL PLAN - PHASE i _ , /�-__ _ NOTISCONTURGTORTOGOORGINOTERGURETYIE.GE EOiOOLTO�PRICRONSATHSAREMunmCONT A TsuLEl=m SURETY C3.2 I vm1— ENVEKOUUMLFACULWTNlME6 // P `e l i��� /; nv — ..... — rv��oLLE6ErvoUwm ,� I ' UNIT, OL LEGEND �v _ HIV\DO 4 IP ® NL.aarxuiwPaTM EAT 26C3 ,__. ��� AIR® Drv[rtsrw orxE 3.as T-0" TIMMONS GROUP ST ISPAMEMTW s:,eVISION A��,��Eo.�ao���o�ws op o�.���,. TB TO..—AR:ERE 13, NORIONTIIIII EAU T CE \ j TP axle ounty I $ 1 a ! 1 If ;e ,;,;, j DC ! _ .E.Po Public Schools 1 I I I \ / ALBEMARLE COUNTY PUBLIC SCHOOLS ,1 - ' _ &4F I E's=, �,� .i , II; II "�...o swn�NTI 9R. a�Do�nD.E snFE.Y EEn�E CROZET ELEMENTARY V _ v I �° ;i _ < I f DNPT SCHOOL ADDITION, RENOVATION AND SITE .E �� IMPROVEMENTS HEm CGVHAnnHR Corm. 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CICHOCKI Dzsalee By K.ROESER PROBBy K.ROESER SUPER � SHE IS E � M.EEIOENEEEENT. .M6CBFMSE EROSION & SEDIMENT CONTROL PLAN - PHASE II C3.5 EROSION NNIROL LEGENDawO, Mv. B RLP pppy I! `\'\ y%` •` \ +\ \ I xa/ 111� .OO onhATIGNI x3.OsN LNE-3NE oa 33T TIMMONS GROUP . . . . . .T.i ���` ��s� ���� ���,lY� �� . . . . . M........ j��-R zwmeNnw all Ux VISIGN ACHIIIEO THROUGH OURSO Pomortrnw 3T. 33, FIR NT _ _ _ _ _ UGRxs .EMEN 11 REET.., 0.axle CoN uPublic Schools i��NAAU,at ma Ru��� TR,Wwn nw[oRw 3.13 / SL4NML BULLMNG \MIAMI \ x mosmN ono.s[omvrt ¢vrtRorxnxcxmMSTmFlunw xunx[R '/ % PROPOSED Ior3 r cns1 .I �s ' xNDREN \I �. `m� \ 1 ' / ,.r�rtg„N \ _`` \`\\ A-3EMARLE000NIYPU3-E. 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RT. . u�xoxR�TE�, x \•. r_ _ _ _ _ c �^ �_ vH i``� _� .ags ROUTE BIO- 0.02ET AVENUE / _� ref , / ' ° STATE muPm'� / 1 �� x d .• ':-�°R ARHOO EROSION&SEDIMENT CONTROL PLAN - v PHASE III _ _ _ _ _ _ _ ,,. ,\ A rov ,Nm f- _ __ .9 Mom"* \�,', `, �, � _ - \ , _ _ TErG,RARTORTQCQ1Al�e_�WTH SCHOOL TO w� GREa PATNa ARE O SAWWT scA,:TIT �NEEDED DRINUUNUTERAC TO C3.6 \ \ zcu[a (waann 1 __ c9�cuss�mc� IMF _'Isl I I I' II wv n° ,RV.P li' I Mmm f,, I I \ \ \ 1 1 II I I I I 1 I 1 1 1 I 1 1 1 I I I I II 1 � EXISiM'35°CCERflE1D I I I I I 1 1 1 1 OUR 3lsrvRennw 1 u <.1 vwcwu roRlo RN'ISN:', RIGS, I 1 L� IP rvl+w-simwr 9 : p IS` ® ` ,p�sv \S TP ' TP q 'r R S9P V A 1, rC In v \ma's 1 V `DID.LD omom PxOOwO, _ _1 R`-- �� ��� �� ® wGY,RO�axEmNU,� 30, O'HIRDF[xC[ 3.05 IS ® �x,n N-G-GR 301 ® a..�r�nl....msnan 3.00 .. T "`"'°`w°"n"°. ''' TIMMONS GROUP I �MEM 3,3 YOUR VISION GCHr,IED THROUGH OURS. mm R 3T. TS.S.—NRYINn 13, RPM°XExfSEEDING 3.33 —TP— T---. 3.3, axle County °QPo "' Public Schools __. IS �� m� �.,. .�.�.�US CROZET ELEMENTARY SCHOOLADDITION, RENOVATION AND SITE IMPROVEMENTS 1407CmslArenm Cnwa VAY1S,2 IWERnI.b.b,, 002 1 101 VMDDnywrvnmW 1284 �` or �1: memo a 4ser�'OU, s^ - cll .a B. CICHOCKI DV'. R, K.ROESER Cmm BY K.ROESER � STR�OSa E.RDRIRT. ARGIST. EROSION & SEDIMENT CONTROL PLAN - PHASE III C3.7 EROSION NNIROL LEGEND 'IVSo-rS/x'RiaY / / �- i A ` �, A'. ` '�`, SSF \ wn nxu DmD�'„ - 9 a - ,� 13+--L.I OF S ICV 0 \� �V\ D O I � � / I � f _ • `\,\ \ \ w ® wXs,wvaX Ex.w�m XD3 oz RRIMSTE \` \\ \R'\ �P w,a, oIROMMIX 3.45 \ \ \ \ P 30) , , y / ,' ~�C'- � •\ \ `\ \\ CP orv[¢,wnSURE uiwOaTM N., , , , _- IP _ n , rcx. • , O , \ T p,°X SE-1rv[°S,pi 3.1] I � i •�Y � �, W°� M N a„ xE EE TDX3 yE v TUN1-- GROUP P. . . . . .IT. i t ��`� ���� �Yr���®���� � ����� ���`��������� i.R� - \ sr zEmNExnw zo .: on nc„r°XD .„Naocx ouXzo-u,BF— LIFE / P ® IP IP CJ O ® Tu,wwn.¢wm. 33l PS RWIPNEMS[[DIX6 s LOS MOVEMENT _ _ • , �� ` \\\� MN m Tu[wmttnw: 339 + MOVEMENT `�, ` \\ ucsWo v aoDlnon TP arle CO exe'F/e'"oPna va`uir�'l311 VOICEi� USE, \\y oe oumm�w, 3as l�Ub11C SC1lOOLS , ax . _I - .Wz ExEsnMND c�Er .,� +u XMumwmNr— reXwNrw SEURSBY MNT SPERS ,DX / / 4' scnooL eunwNc �� i/ �° PROPOEEO IorX ( cnsl IP`mp X ` D \Mm \ it � ' „ITGIEH ` \1 w \ \ i xm • , w`•\,1•�p\:4X PLBEM1VALECAUNIYPUBLIC 5p1COL5 bR I CROZET ELEMENTARY SCHOOLADD°' o" / I, �1�� II ' \\ \,`\`\I `\` `, IMPROVEMENTS �" I �__ _ / •, _� _ �. _ __ a I "`""'i I e NAND SITE / y RENOVATION NT / / I IP IP Cmd, VAP%12 / / L _ •m _ ' 1 1 ssF - N( ` I`� `` \ VooPRn°a Nme°r aozvromi I 11 1 \ - vmoonywrvPmmr (ma -y\ A «'� "r,rce_ I — - - - - —_ -� • � _ $r _ —1 __S�e \ 1.5.:; .' � 'L � i \ �'` ;`�;� \ \ `` � �/'rfTLZ II 11 II IPI - TP IP IP \ i •` , \ ,, \- •\\ \ \`• 1/SNi�lput s`P-- \•v% 3 IP i s gOREETEMINU" \\\ Cnmmev B. CICHOCKI �• V A �n -�u rac V A U,B'.N, K. ROESER CRUMMY K. ROESER A' 1 I I I � as .a_ '-„ � _ _ I � ., �Nx Mips. I 1 IP IF. IS IP r 'v ��'� 6b , — SSF \ •` •+`eii nos sw�al lla I __ - \� _ _ _- �— , i cx ,' — ` i � \ •� ` F TP 00 oe. (ar zorreo:aaw _ g I .XL I � '• TP a .' dry .' ry , , z — I,/`7 _-�� i WN NMESDSNaDPUNNU,NNNO r ,wo xExouEMaexw.ervzr aze ORMUSINNI S� NxORSITEw,xw �� _►� , —_ -.�-._ ----- - __ _ —_-- 9 , 0.02ET AVENUE I f — bs 6TATE ROUTE BIO- =� o— •ixv � EROSION �AII °� CONTROL PLAN - m° w..a,,.�,...,, PHASE IV ---------------------------- -A ELF - ""�;�aNsw°rOE�°«C°a NATTE EM"Ea'� x�E �'..�,-zD ENs -- E4NE FENCEBENEEDEDSLUM � P C N1 � C3.8 1 � I _______ \1�11 kk , I ' I I, II / 4\ \ r I 1 • 9SF II I Y \ I`,I+r I / r I EXISiM'3 SUDI flE1D •J �`�11 �� O II ; 1 I� I �I ONE a 1I� II III • 1 �r \ 99F I III 11LIBRITSORDIENTURESSURED II azu \ ASSAMERNAMISTIOUS1.GRE tt\ j g II y • � .�fl7f \ ,/ IP r \ ' P /tOeE 6 I 1 l' oNE Rn(rs aN 1 k NN I , �' I �4 IP 1� aces i _ TP / 3� •45 / IP i 61, / y / USA, I III, T' rred •C /�-' - WV ' I _ "T. I IP . •a, - �II 9 — — — a1 Como N ISSUE _T ..� AT WE SwERSBARENCE IP ® IN'-DOODrnPN cw ..T..mam ®_ _ oWSESSUa. DIKE T .W,R.EE..I-.=,a. 9i SEREN,ENTOUR DP o.nPARATEUTN Ts TENPoCYY 4E.MG vmD() U.1 TO) 3.ae 3a. TIMM1 YOUR PONSoTHROUGH GROUP T31 I I rr ✓ PS NERIANENTSEEw.9 332 3US —m— o AI axle County n S. Public Schools SO 'Ts; I Ir'/I � xi-xr- 1— I / A 1 ITT ST m 1= I � I 1 x' Ottit xl/4IrC jdll ,� r oSTURN WENE''ENSURE URIIH9CHOOLTO ENSURE NFEIV TENSE SivrSEEUrvcNTOONETSTRUwaCOSTRCIN ATHIRST xpx F.!, A \ 1\II A. v< IM ON ON ON ON �, r•r III TP A rl y`,• ,III vv Ir ,I�, 1 A III;II v Ir•,'•t �' \ 93F V A A\ To\, _ —__— • \ 6 \ \' \ ;NI e•� sv A V�vT, ` .. vG,Or :rr�ll-El��1i _•V� `. .isA`, v r �1 vv CROZET ELEMENTARY SCHOOLADDITION, RENOVATION AND SITE IMPROVEMENTS 1b7CmslA—Be CTEURVAY%12 VCOERnIEC1 b,, W231M101 VMDDngwrv.meer 1ma !On; C.. sy B. CICHOCKI DART. 9y K.ROESER LFa+n9E K.ROESER IN... OSESURRIST. B NIXPoOP STE PAN MIENOAENTY 24ASSURTMOU EROSION & SEDIMENT CONTROL PLAN - PHASE IV C3.9 II r od\1 v m D v/ Ij II II II _ IIIY, B I 8 \Lj I�YM T _4 mll TIMMONS GROUP 1.U.DN A H r FD.HxDx H DDR,. RER, D P 41 ro axle County _ -- __ Public Schools Ij UP r PLBEM1VALECOUNIYPUBLIC 6p1C0.9 1y I I 1. l l l I I. 10� _ ��_'NR°= y"s_--" _ . _ _ _ I \ �• \ _ — —I — — — �__ y _ _ — CROZET ELEMENTARY SCHOOLADDITION: _____ RENOVATION AND SITE VAY1di2 IMPROVEMENTS 1<01C A—.0 �°0� 'bs� STPTER011iE Bp0- ROIP ZET AVENDE , , G— — / � �H—.F — �°•_ . —_- � —�-__ / ,,�;%°"'— vooENoleaxmeer aozasanmi s \ / y■_ �:.d =.�` w"__�\'t�� ,� ,i �,— � vmoonawNxmmr ima El `__-'__ - v - �_ =_'y _`� '_°N, :mrr".:. ;.F,w..`= q �,/✓J��N,L.�,h�`f� _ _ ______'s.'_ _------ -d_G - __--- -__c - C.- BY B. CICHOCKI DEA,wBy K.ROESER By K.ROESER --- ,Drwpn .. I / 9RF fEPRBIEcr+MAMWµLSPECW IAL NDdl IiIs r ■ B �a^C / mil xDSf(mim P SONTH 'b� II rnn. s I cE 9s� SI xm REI Ruu7ExR wamlssNi0 1 1 . oxy"'Issax I / Rx STEE�N& IslwrrvWw M B NIA a / / ERDSIDN CODL LEGEND B�DE E ' , // SF"oRrt^ PRu om Eno xrD 3.0- 1 O.PoMEx.B.l 9OFM,pRYEIR mNm EMuAUAJ C.sFAx m STDPAAXI `MaliTHEAP AANDSHHAAEL.-INr". DIs ABury I,� Po''D'""�xumRxm 3Bx a PoPTI.DP iH I / L�FFF�DR$HALlxbiulul EVIMAI5UREb � 9PF aF mr NCE x.Bs I sxp`xs AavuarURBAND T. s.n I 1J-1-1LN1. aaz I FIE=.UTWNAINT. DPD�I N9�LETI\ / BBF MAIxi H\ FDHEPPEJAETEOdd CC�i / IP ® INL-P-E-x 30) I B FL Wu�BEBr BFIDNRib iOBRF4%R ANY \ / I DR.a m6 A^rvDIEr� \ ® mL.�rrNL.wmFcxan s.Ba �l mMMNILANDE PBILTHAT ANDRE / v orv[nsral orM[ 3.09 uaunD v rFR.. AREA Ex "D III ...xr E B.x, CONTRACTOR / sr __xvHr zLmmernmu BEB STAGING AREA DP S.x6 LAYOUT II I a / is rerwwnrrmw am Ps r aDre coNTRAcr DL NAre UEry orc.+cE r DuzTmxreoL L Drnaxbvmx DH aiEHEn/ ins DRESBPATHBASEmEMArvE I6Gp1lTRP,P"TTOLRPnoervw ADIDBT , C3.10 �./ � --- - �, _ - __- _ __— - - ___ - __— -_ _ � ... —— ----- — —_ —. — —— __—____----__ _ , 89F $SF — I �^ TIMMONS GROUP I \ 47= og x E �nmiarleounty .J' Public Schools ___ _________ userusu:cauxttweucscxoois II \ \ IN, I CROZET ELEMENTARY II \ I SCHOOL ADDITION, M I s \ \ \\ IMPROVEMENTS D SITE 1 RENOVATION AN II W . rem¢ . VAYt 2 Ma 101 A V �\ , 4az VMN%oletl Nmb� 1R1 rN.,s«i ..P:e.s.e II \ SSF \ "_ _ \ mxeo. as lxuxu.weaslp MAr3 __ 1 ch. e, B. CICHOCKI K.ROESER K.ROESER "'DEC �\ i ki TP ' IV DE "DEC yJ 'DEC', \\ +�+ /,�•,,�'', Vi 1; ;';'; I ra^ c�Q° I _ I 'i. ail, 'A.�A I 1 N I f f E•PEF I .. 11 1�'i I'. Of I ' k I . '1 II mEewwa..ms,�m�m�x '" �� / / ♦ , �,',,' xeoemsxomwru MH0VSTEaux0Exw.FNTV1 .. INT. 1I II [LEH ; s ER 1 / �',� �� / i OSION & SEDIMENT / , 'I; �% I i CONTROL PLAN (GRASS FIELD) I s , ,r ,0 1 Section 5. Stormwater Management Plan (Provide a reduced, 11x17 copy of the latest stormwater management plan. Do not reference only.) Issued — 10/2022 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County —� � am OIEGr� `� � • �\ iO'ryNam f1'N[P @'L I ./� DAyIMOIfRSOCONFN NOGM qAK \ �` I� \ v m 11/ \/ Nv o°k snss Ate; / / � r •- dy:- '\.: �* ogm chuvraµcnyx\ `. \ fr \ °�", \ \\ \\ \ �; _ �:� / ,•COM o DG.DN. I ELNEAGENG.RFLARD RATE IN / _ nmus*coxESGc*our mrvnuos v V `T / " PLcnoEPaH rk .MMULLSTavvuvolrieev ,\\ \ \\ \ ill ry', ,���r, •, L ''x/ uGN.xEEwro xourvo MEAN wrvER�HIM7vu t .Gwi _ \ , e ADJUST INTERNAL = I\ TIMMONS GROUP ......mom >t s _ r�� s �>t�� srr' tsi .... ............ >t-r.'r `� 1`'�RESEs i.� AIR•i*��\�� rvLE.mPPER HEART ELEvnnox au, _YT MOVEMENT POLUNDSOUION DEAN �L« a -� � TED�NNEwDTTD, PVG . 1 � �\,,, ,, \ , , � \\\\ \�v made County GEsN� Qv'`, a Public Schools / Y % PWPO ED 1 zorv[ arxuau CAT TO �ENFY �TCNN \ , S \\ \ uDEI,wNu:cauxttweucscxoDLs GON 'TC NOC1 a` / x - ' a'xDPE DLDNmE DGGP T,°V "OOFr P°Enu `: \ '\ \ "', CROZET ELEMENTARY =PENN, N COI mr)1`0P) errcwENrnm •, lox 1 A , �:-' EmnasPanm nxsLmEuxL sLaPEux, Nr; NOR SO ROD �P.aa.a P`D .i ,ao 00 ou oo�evw `I IIII�'.'J„\,}.•C. \�\ LIMPROVEMENTS�DSITE lClOOl ADDITION, G >o. 1'\�, RENOVATION AN / — senNo ia::ST eT _ qr vnrmEe = k � Tv woERRj.NI anawwax nloormleeomar ,zea e;zi I V 11. A v V A ,, cLenn i \ ., nn, a a I LIN rv� r'u sx,r I,! v>.r-\v VAas — v k„ I \' V v ansuze sr B. GCHOCKI \ I DnI9paC sy K.ROESER sn ns� V , A N I A r I III PER �"" - / - - - j - �\ - - )EITH`"SAID. A.\ Duren By K. ROESER GM L pUETMFI G�E°"E'� I I I- III 3 sr`n`3s. / � j •� \ 8 II I I _ sN GTG N a. \ A - I I �y P, N, Js I / s,GD ANO WA X aa,.Psimac tI v � �' arzwe,LrvTmNEnGM!s1A mu Grrou .,,A ON, �- -- — IT ANNE I I .IJy�II 1 \�'� •,,.N< I _— \_7 I rm�"'""--'- -,-_-,cam_'-NEI------ -ka a IA N I \/ LASS I — — — I\ I,mEuoEMasim PI.MTECOKC IMANNOCH DENTIND,PNNNDN` . 4 , — tlSNAUSHISTRONS :� uixaysi.EPw,wExwErv.r, nwusraz _ -- -- I A\ I r r- - NPNnPGGN�TPND;�TGN CLASSAI NRCTN� S. _ _-_______ _ -- - - -_----- -_-_-_- -_=_=_--a- gnu \, ------ ' _ _ __= GRADING & DRAINAGE ^m PLAN ea Gma MAI IS 1 CON�NSHALL AVOID LICTURNSANDEWTHINTxEZ C5.0 I 1 IT I; I' \ 1 I ' I I 1 I I p 1 I, I I I / I I EXISiM'350CCERflE1D O II 1 II I I � II i I I 11 I1OUSUPHTSTRUSSUM STGUND OF , = _ - zovEH. owa�w niPnnP oan Pnareaion a.raVPa..Rsas, auPm°':i \ I Om r->s Bi---Nnbn Pacurvm i us'�wree ul�SAN eEnTATRIS aR cemx-1 " \ OBY TUP ePS Ea .R R �w«n�aOPA TG w :T , PeAT EN ANMY EVE. - �e M � 5 I IIII rvv I; ,BY 'fp','"" HerNNEPRERTS TO BE �RSOac BENEATH wmr E GOYER n� wO TO BENEATH DNMBonon x ( \ I , THE xmO i Burrea ro THE GREEres. Hnwr Piuc.cau I \it x33x C IVrI: I ' ¢x.re's w Is P„ II' I TABS.14 EREroN"� \\i 09 r _ 104 FAG 'LIT' SO GI — AT oNEN t . /e \ ENE OURFORESAIL r -c s SE AIR TEEX UET, �nmw�ORm v S,E'�T sm�>viI urnH �� v v rowIUYAW DEUN .� AOUGANTUAMETHESTION \OFAUNHYSTAPPAPI ..H., I \ \ \ q` a3P.R� TIMMYOUR V151GNONSACHIIIEEGROURPTHROUGH OU arle County Public Schools CROZET ELEMENTARY SCHOOLADDITION, RENOVATION AND SITE IMPROVEMENTS 1407QoslArenux Cmm1,VAY%12 w Ermlceumcm aazasanrol VmooPUyeoNumeer 1ma CRIG Rv B. CICHOCKI u«ia'Ba N, K.ROESER ua+m Rv K.ROESER e u oa 5,ewm OINderv,e .wcusraze GRADING & DRAINAGE PLAN C5.1 fio-ri'RCRM1 r +R xePElrs1: 9vxlt �9tat. Irvv. R 'ACp 'r II` nv� 1 � i rI iE ... . ..... ........... i� >w� _ B \ �� rrf�� \..... MI NT _ _ ` MOVEMENT _ _ITP, POOITIOH rrsaw,> \ \\A Fs°fmn ` S .. p Y \ 1 \\ ,r¢v PROPOSEO ADDITIONN EGs�r\1� I I II m '-- / k- o v \ m _ LL ALIw NI I — f N. .,, -_,roe" _ Frcw uF y �.„z 4° ------------------ ----- ------ =--- �- f� Ar BI Tn Po o 0 0 pp� I q p ass l OpAGPPDNG OETPL v m D C TIMMNONSoGROUNP axle County Public Schools ALBEWLE COUMY PUBLIC SW000. CROZET ELEMENTARY SCHOOLADDITION, RENOVATION AND SITE IMPROVEMENTS 1407 m A —Cm VAY1di2 VDDENNIeNNmcer BDza 101 VVDORy Number 1ma l. bP^ N mvu YL Ott o- e snu a cneu-m ev B. CICHOCKI D«IBree By K.ROESER A —By K.ROESER IUUEAMDRW MPo ATE°PANTNM.IENIN NT. IISI.AR GRADING SPOT SHOTS PLAN C5.2 /1 a IN IT-b �ws q77 IT I / I I ' /,Apt - -jr.---- > ,' OR I'; 7 "UT x �v W d I\ ------ «� �N \ ,v op " xm aEe a�2 e. e N' TT v m D \ TIMMYOUR V151GPONSACHIIIEoGROUNPTHROUGH OU arle County Public Schools CROZET ELEMENTARY SCHOOLADDITION, RENOVATION AND SITE IMPROVEMENTS 1407QoslAwerm CRUNN VA'[%2 V EFEE'd.NP 002 1 101 VmoovSalearvumeer 1ma cnrrm ay B. CICHOCKI cesiaar K.ROESER u*'m av K.ROESER NO SHENOOT SHE E SEUMMENSMSEI OR GOSH B MINOR SITE PAN AIENIN.ENTY SHERNINT. ` GRADING SPOT \ \ \\ \1 \ SHOTS PLAN ,m,',,, ' C 5.3 v I ♦ _ // oz1 � �� 22oaz �� s � 22o zsa �� � � �� � � � vv '� v 2i0 oaa � \ TIN B � a .5 2 3: 2♦ �� j E% 0.3 � . . J PRWDSEw A V � A \ Amps— i o.oa v v v vv v v v fono AN�YTANY i AruN N Nu - 1 I�III Pe sOrroa eunaNsi i eA.� I\ �\ \ \__\ u PROPOSED Ensl \ A, ADDITION V ; . TD 090 A 011 0.03 TIONM -- — —_-- —_ —_—]ao v 1 y 130 0 ]8 130 090 � -- L � � o za o.01 .... ............v v P 0.12 (.� LS. ra' :UNMA \.REEOA Nu.e.aEN1Av NN4TED o�.TDANTOTN¢FAain-sDSUCHNOREMAecANTHEATeD wivFug 032 032 „ ,.av M1. uouMosDNwo; cv nVmHc� a.♦ ..,. ��'�� ', \ s v. 1 ♦• \ I •. ♦ \ ♦- _ rvxAm \a rveNel \ ovmmecxu I,�. ExI Dry��I Howl — — � • n•, w,encx I v - . A ., 150 06PacnTY • O. ♦ \ "A m'�— _ ♦ .__- �; �. a 132 OB INFILD.E^ ♦ \ ��.— �. -- _— ♦ ♦T ♦� '� / .� 019 � V wre ups 1a.1 �♦ A \ ' — _. —_ ' J ncx 154090 J M601083 \ENINaNYAI ♦ o ss A — 152 0. . uEo�� ♦ wo,w�wl � f _ i _ -_ �� � _ -- \ Nr- -�---- '.. '--- -- -- -- __�- „ _ y— 1 ---- --- -- _—- --- -� --� _sue i, • — __ LEGEND: _.,.r`a+�bw�f�¢ `T—_ w,.W.«,,.,r, OaNmDA,3+au,FAu«z, _— -- ~�_L__ _______ O oNomAOEANPnroaioNETElrtwxu ________— _.-" ____ __ - '\` pWINGENFAroBiONETFMwN 3C i ---" _ I�"--__� 1r ----- ____-` aruEr�rw OowwwETyo OwNETExrwx sA/ -- " - _ Mw.At, � l\'nNm DAr.ou,Fnuatl vmD() TIMMONSGROUP mNN made County Public Schools NHFIWBFCWNTY PLIIICXHChS CROZET ELEMENTARY SCHOOL ADDITION, RENOVATION AND SITE IMPROVEMENTS 101 Camel Aw.s, CAN. VA MQ an0aa�y.aw.ee. a0ANi6101 Yk00Pryeaxuim. 1m1 0 E..Amay B. CICHOCKI Da,NJaY K.ROESER o 11' K. ROESER N.IESIlYJIEVRpNF I ...M WFO%/x5NNN40.1 I... Np oPwr wwFSwN I.., A? AM�DMENTIIaw.1 WNDRSITTRANAMENDMENT11 STORMWATER SUMMARY PLAN C5.4 I L� I I \ \ \ 1 I I I III 1 1 I ' 1 1 I 1 1 1 I I I I I �9 II EXISiM'350CCERflE1D g� II I I III\ I'� 1 11 a<Tw r�M � �'�.AArAsi I roREo: I I 0 zzB oa o e 021 ,, _ man II PP onvc�ovBnx �� r b� IINNNNC m �%' 22204 -2120] _ �� 20803 OA 221 0. ■ 223 0.90` 0.30 0.28 1 1 \it xliY C Idyl: ' 1 a I , LEGEND: TIMMONSoGROUpP marle County Public Schools CROZET ELEMENTARY SCHOOL ADDITION, RENOVATION AND SITE IMPROVEMENTS WCm.tlAre .CimeI. VA=2 Y ERmjdH r fON1N101 Y1.IN%olb Nmb� 1R1 of � �,yTt+ fA .n<�n z m snn a cn.n.a B, B. CICHOCKI Bn,Wft K.ROESER D.K. ROESER 'V 1 A No 1 � \ �Ras.Eaa�roao�cRae &R STE yNi mMFOPVX W y` . T STORMWATER SUMMARY PLAN Nk C5.5 re BEEN ► �+ �r l V'V�, , 1►I V11 BE ENlW l[, AI iuC Ux V,IT Lo ', ;,; ► ��° / 1� ' �, Il ► ` I I " A f 1 'Y ry I , -=j1f�BE I.��,. , ,jl dl L� r , �I v r- I '"', 'll Il� Jpl, 11 7 zV I l / 11 I �I � i lY I I / 1► 1 I i r�/ P /j ✓ / � „ �,, � , ar„sz II Ir I ! a ,'/%,' /ate W1 avrws� �,��`:� I//' 11 ', ► wcrrr cross auuro '!�s'/�,', oAe / r/ , I �Or L� oqBABLEASSANac ¢L���p! O /:,.+'Y9'l'�� Ill r�Efi I /r Ir I r /� /, I 1 rwr 1 Ac �l 1 —BWMBWNDARY / SWMBWNOABY A fir, l ' / 1 - / 1 ►ELSE, B� , r r /� OFF OF I � RB]AL1 _ r�A, .,mac ►� /1��Tr iz ` \\ / / / / / BWMYtOElEWX1KK11 opE TLAMr.6N6i AC inrI NIA \ / _ / AA,,Elorss o� i mwrxiwus( i IS 1 /� _ ��' '� I /� i_ sn.larroRs o� nvro c ,:''/,'• ] �. ,'. � 1 _ r ` _ _ _ lcva J rmrsEs N L _ A - - - T UAM= EBI NU BEA MANI BE Or MEN / 1 , ; swrtf eaumoreY C.7 ---''--�- ` ' - LE LO ' IF I a �- • ' EINI AI Y '" No, vv 'lil r , Floss I I ; I EVEEIA _ . «, , I on rrs I� Ac �, nce�s!aouNoneIF a.na�%a, - .•, \ wo s am.w SAL rI I /r ,1 1 R r� 1 aB.L _I_ \ • y 11 Ac II , 9i nls,�1 L 2v� 1 i I� ��7 1 I R\ .. I f / FEEL I / L-I�r.1� LOL�� �1 ` w.�.. ,\L i �v _ \ ANNI A' ANN r I aoeac AI Ar 1 (LF2 ) � c 1 eWAO® L -1 ven ( an o g -yr ,- Y °! �i P �I� i� A. 1 I eouNa�r /EVIENTION t EN., uv II USAir �N I �i �j I ELATE. <' a ai - 3ivnc N ccu A BouND.eRY 1 a, 1— — �' fl 9� _ _ _ l 1 �� =► — — __ 1 • ` .orrmx.V+el — a r.l _ _ ----- ' �.�- r �� \ _-- Lam -- 'rr % / SWMBWNDARY- - - "- �. 1 �® F• a 1 --' wwax6•wua-N o c II AS SWM BOUNDARY —_ !�—y r 1 m-1 avaL �' BEI TAAAC .r --- i _ T I AMASS NONE'.") BAN _ IN 0 WNA f1C � ir.�vrs IN - - -- EVII ° . / fllFanF/ r� _ _ i �� • i I / l �� __�� IXnoNlwal>EJ� ro alANSp �aa ciNi ♦ _ 1 ` I ' I ENT I ION ♦ 1—LEV __ 1! l IMMANUACENOTLEI/Loas-'� �E L L 1/�. ;I I I m ca la. Ili , lersne/ , _ w l f c/ f avroua./` f v EFL twos Imrcavmus,,/ ` Ac �I Ism"A'wa+.a. iLa.�• ftw L B .BBI Bkw I 1 1 PRE -DEVELOPMENT CONDITION POST -DEVELOPMENT CONDITION v m II \/ TIMMONS GROUP ��nmiarleCounty Public Schools CROZET ELEMENTARY SCHOOL ADDITION RENOVATION AND SITE IMPROVEMENTS W Crmtl ArenuB. Crmel, VA zID.tY Y➢CE Rrrryd Huka, fON1N101 VTINRMIiBMmb, 1R1 Cn.nea e,• B. CICHOCKI uMA'Are y K. ROESER DMNE, K.ROESER NO ASUBSE11I I FINAL ALFE FLAN � VNEE MILAN SUBMISSION 10 EASE 2INE M.e MMINE INE Mu,weNESSA .wcuarzm STORMWATER MANAGEMENTPLAN C6.0 WATER QUANTITY SUE OUTFALL I GRWIxON LOADING aMIM ER Ousl n.."FORMAGAICu31 MUNTRUAESIwARMON'OCGaI TURF) TOP,aF31W0001 TOP, EN Te SHIN ie SMIN u1CF31 VIACFTI u1Cn1 NN HET, YEAR Us 0 EST IPWO IOFFOFF611E 1CY1 OFE61iE -A�IMPEERVIaUR) SEU •ems NUFFRM PTUR, ow ACRE6IMNUCF➢iURF) 038.NM.(NMMEOTTV, , asACRES "CONS) IN-1 N FEE WCOUS) Tc�A MIx O ICF3) OICR) COMBINED 31 COMBINED 1 ROVER CURNIi YEAR a3 id6 CHANNEL PROTECTION (ENERGY ASUANCEF Gowowo ANNON,o_ M _a _,GPVA arrcU ON 1.76 CFs•C.w'm151 OPEC Gas AcmRO GO AUFrnvr-1.w TO MAIDEVELOPSO WE s PRELEYF10PE0 Co ON 4.OF CFs RPa51-DEVCU.1GD A) z I.s6 CFS(PIPE -DEVELOPED qd WATER QUANTITY SITE OUTFALL 4 SHEET FLOW YNALMEN ENE"NORY, DRAINAGE PREVORALYS18FOOTDON _ SI MRRVIOCE) EsnuPEPn0US) EEGRANACEITUWI ACRES INAMAGI.1 I is>MNAAIWDGp6) m=SHINESNAN RICAN VIACHOU DINER Vas III YEAR OY,—o+CUUFN% V­ —, NV—_,®yRV— OK CA CF65pPo'(1 As OF6'CCR A ,,Rp15 ACTY, ONE F. PROTECT ON MEN DEVELOPER Q1 A MINE -CFV MaPED ME UK 1R Ors IP05T-OR¢OPR o,a s 6.m MEREDEVELOPECT 40 GO a RVDwaepw ARvANFAepaMA) WINE RW RunPII INN IPM 0)5 `]0 3M RVwAMING n4rsNMSrSRIR IM1 Runoff ReadawlonE OJ IR 2M OUIFALL # 2 - VRRM DRAINAGE AREA B .I I D.EG I Pm I SUCT I Pm Im EWA U-OWN, WDEI (woRTNleEI GIRR WATER QUANTITY SUE OIUFALL 2 CARAINALF AREGANALWILE PRE DEVELOPMENT INUA - ILL ACRES aES(ILIPENTAI �LGACRR(MnNAGEDTOTH Us RFs ryVOOPsj ie SMIN .ICE, VA I %300FF ORIC E AREVR•RRESS OMPmVIGUST . ACFES MANMMATURF) To- is M1NOlcEal SOS ACRES SWARMED TURR TV �IN ,(CA, PC R ACERES IMPETUOUS, OPAYESSUMANAGERDTIUM) TTFC -M. EDREENT) N MIN R(MAN x2 SOFF OFFSiE u 60 ACRES O's"Ca51 Tc•5Mx5GUARANI a(G.) I YEAR 401 ACRES07 OMP IOCOI RER GRANACEDTDRI TT SMIN G RIC SGFF CONSTR 051 ACAUAYPNMFRE, SUNNAGEO IF 1-6 MIN D(cFa) YEAR , CONS D (CAND YOPROU'RE 1. TOTAL FOR II ENERGY ECOME i "Ns) RFA=64516 E6 TON c• u1�= TRW VRRM SEE DA 8) u ss' V SOU IO YEARA. IBW LU.1. TRILL AREA - 1SS a. RR IIMAGRVIOU31 ESIMANvtR TURF) TA 1A"IN RFOREST 1. YEAR 11 Ps ER.I Off OFFS NE) CAPTURED IN OWN 1 ACRES ]3AACRES IIMPERVIOUS) ACRES IMew,GEDTURF) Fa 1FORESTI Taw----15 Mw O(CF.) 1. YEAR I Us N.WFF OFFST REDUCED FORD AL CAPTURE IN 0,SATEEMIMPEPVI0U3) Tc.ANEN. wGEDTURF) RUNS) 2YEAR AN INVEST 7. 4a.a«cs C.ar V-Y-DA Ei RWAMAN-Y)Rvawnma.UYA- GK IzmCIA 6P8YII4 As ORION 212AaFrylp3x ACFTF 110 AN US NU CALERA AREA) 1. PECTRACTIOU GK TP 51 FEW(POSTDEVSiGPED Cal s 47 W CIA(PARCEVEumEO qa PHI 1UNPROGRENCO O P AU6(1MPERVIOUR XEO ES is • A MINIMNUOED TUNE( OICA, 1OYEAN 1W IFS Ppl6 15 ACRES ACRES (MANAGED TURE) ON 00 D IOF61 ay. Is Is OFFED 031 MR. j MMu.EDUTUWI O FRON YEAR w oeiozn CAR SO ?OEAR 123a�DUiFALL y. NOUN FELLOW, �OSAMESIMPERn0UN ESIMUNGEOTUWI GUY P JOAN ILYEAN Us GIDaoUTRDw O CESI I YEAR 10YFM COUSINF p es�uPwESVIGUR Faw GTGwTEGR) OF ACRES (MANAGEDTOW SHEET ROW( is-AMIN lCel 1 YEAR oa PREEI RAM D IC ,YEAH PoNI (ROMSTDHMTFGH, NOGAMT1 o �Fn I YEAR 2 YEAR RYEANY COMISINING INS G iYEAR Q.1LY STRU RE AM -.IN MPOFVEFWEIR RELEANNEGANY rVNEIR q,6YF>RwsE- _ i Ais _SZ1_vFANSI1Pw_sE_ WEIR WALL IN ee�.6 STRUCTURE— Q ALL-( ANG YIN 4ED TRucTRE. WITH COST IW IDA Ts ENS CAGE V CONTROL STRUCTURE DETAIL FOR SWMI—AL NFOOFGREET OR z OUIFALL # 3 - VRRM DRAINAGE AREA C Chl RVoercnPm AYNW eOln[p wi,F Iawmasm Caer RVoo,i,Pm (woeoxhMJircA) wkn OUTFALL # 4 SHEET ROW - VRRM DRAINAGE AREA D ,—Is Is 1, CNFL, O5dUND am WATER OUANTM SUE OUIFALL 3 AREA - 127 ACRES a AT ACRES 1m, nlsl IS ACRES IMe cED TURFl WAYNE. IWDPOsI ie SMIx a1Crs1 VIRCHATT NVENE IFNS.ICRF ITIONSTRI O�s ACRES CACPES(...PCNa,) ACRE R as M. NOMMANSI R-S Mlx VEL) ORDER ,Y= QO GNR ROW ATOFF OFTFALL DCNAM IOYEAR AON CHANNEL PROTECTION ENERGY 6AISNCEk %--,P. UVOT,h GLttO PROTECTION,mIF CAGE3a lvneETVLLIT k- ITT .px CAR 1Ea,OEE) INA4iDEYELOPR FAR s PRE dNEL W ED 40 TO, .1 ARM aff"RE FIRE DEDoxsR PRCVEETrN2 CONTROL STRUCTURE DETAIL FOR SWMI STORMTECH AGE 00'ACRES PARKA EI TURF) .c-sMln ocn vaca-rl PRO ONRUNNELTOTAL PUT ENERGY D.NAxcE COMP ANNEAL--I135ACR1EA PTOWORSE RFSIMPANAGEDUNNI 1TY SLOACMIN ,m) VINCFTI 1YEASE 1. ,OYES 1SH 0151 CALLU lDI roL w'CMP IF AREA-.1 ACRES B ACRES NAMAGEDNOWj 21 ACRES IFOREaTI Ta-E Olasl 1 NEAR ITT G.R.I M. iff"3'CMP Q(GAN YEAR - RIO SA INFLOW RFS (IMPERVIOUS) SACRRIMANADRrvW) m•suw D(EAD YEAR TO BO3A GRRUVM D a("Nal YEARS As R yEM 'M EAp xE pAACRW xEESSAAucEODrv)W) TRY. 247 PRO TON (ONETEL OAO ACRES(MANAGEOTVRR m-SMIN G CA, V'RUI THE VOLUME OF EUROPE, NO ENDI ONGFO M 10N ONSMITE •us •ORES l.EDTURF) MANAGED TURR Te 5Mw Te EMw MCIv.`ff ORCEa) VRA I SELLING CANNOMID WNSUMES TO NOT INCREASE DUE TO THE PRAVENCAREND CONTRACTOR LIMA FUcREnSRrvEvauMEp FURTHER SigimwnTER OUMFTTY CONTROLS ME SECURED W vmDO TIMMONS GROUP arle County Public Schools CROZET ELEMENTARY SCHOOLADDITION, RENOVATION AND SITE IMPROVEMENTS 1b7CmslAwarm Cmml, VAY%12 VCOEFFOUSI urber MY 101 VMDORgWNumber ISO !On; CSe0N0N Ny B. CICHOCKI AN'. NO K.ROESER MMa Nv K.ROESER FORESSANDREN NO �O SUNNI AT NOR NPo MENGMEMR ARRUESSONTO STORMWATER MANAGEMENT QUANTITY C6.1 VA DCR SPECIFICATION NO. 9 SOIL MEDIA SPECIFICATIONS romPnm¢asarmaabmr. bammE a.D 0)OL.MP5LyryrYsye Epeplvllvu 0MI30ran BMA EwMaas BANSPnlRvllms Amgen pmel Elemema XAod ® Beare'E 6/)8/)a ) umm ceealBAmam E,Bkm A. m.r Site Information Post -Development Project (Treatment Volume and Loads) Enter Total Dlsmrbee Area farres) ♦ )Es cba[F: RMP Ceypn Spvlf[eebna llrt: aara Mtn&eaa Bean �'. unmrentaa) No - ® b dEoverarmsmferee[wr Iv? J rmmemureaaomaenmrer J - 11,11, t'.. ESIN.— rv.+Lam.rss>•ERAN-1- roor ed aurllma-aemrGa. PaaK A— ... osa.Bll remGS", uUSEEP'NE, I ine43e e,mY mA AS umin•+1 MED& ON I nG OE I OL 1. m...ymwmE...vorw..m/er"^ro OEeavwv mmamo. w�.. .vrvyminw Amwmmm°wl ....a nAN."INPI m.. 111..11.Y.E11•m RunoXO:M Has IR 1 IFEm,.ro s l 1 f aQm• FIDE SO u m Trealmene Volume and NUI Loge E.. 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A, ANYOyenMmm.FEWEA akm AN, a.�mP� emna m�I IS BEEN, Ea TAX -B be — I Ay ma rears, ma ma Y. DENNIS Bmma u A Nmrs -1, sney 1,, m ear {Iv ua s.eEBl r"�.a1m nl.m.mmmaa'II, INimlwa:neanlmwimm. 41)1N1mn WBrmsPmrmVrc. imlri!hermlm MA GONTRAPPOSENALLNOTENTEPATIM ro MWEM1 OF GOWWNULTI0x Or BAR RUCTICEG C CPrtRM.'NR EENTHE ENGGIINCLUDINGTHETHREE SPECIFIC NEERINUNTIm OR,, AND MEEFFINGUANUFACTUREF IS IT CHILY RECOMMENDED PRIM TO INM�ION OF THESE PRACTICES TO ENSURE LIESE PRACTICES ARE ana ONLY GWRWYT1W IT IS THE SOLE R��IBILIW TO OUNDUMENT THE NETALLATION OF THESE aMPPCTORF WITH SHAPEAAMEINOTES, PICTURES, AND PRACTICES RIeK. MEASSURESENTS OF ALL MEDIA LAYERS WITS N THE P'E`OariNFEOFAAEINFEIMNOTE�TePS EACH MESUREMT EACH TRH TWITHOUTS LAYEAR OF EACH FACILITY ISROFIIGGIT NOTIEF IILiIESHEGRUPTOGROVE THEFORGEOTSECTIONSWEREINGTHALLED Y'Ren TER MIX IN. EVITTANE PE1 SYSIGGNUEEMBECIAD amEEECAYs. AHADEETHFXINIXYXPEPrx AFTERACETIX3 CLEMANNUM T ENTER- � MUNCH A, oneurce SEA it.. "AFFERE UNINER 1. li�'B EHALLYTHEN IMUXPErtHAFTERANSTIHG GRADORDIREDOWS arle Co Public Sch000ls CROZET ELEMENTARY SCHOOLADDITION, RENOVATION AND SITE IMPROVEMENTS lb7Q Annm Cmmr VAY VOCIPEE aNmeer wI VIDOPHgwrvnmmr Imo cared IF B. CICHOCKI IealanN ea K.ROESER damBy K.ROESER E u act SITE vent ASSUCHANTY SEAUSURI STORMWATER MANAGEMENT QUALITY C6.2 Drainage Area A ASNk kSaW Ess. DSNb Toad Ynd Wef Rv F.xwPen swrvlxml DID DDO Lan+eeeldla[ml OA3 O29 O.zO anti, ae L'mer(.mal "a 0.03 0.9s recall 0.12 Drainage Area g OBINN&SAMAMMrgv (.a) Toll Phoushorm AMlable for RengM In D.A. A Obtr) 0.11 Past Development Treatment VDlum, In DA.A (na) 169 Aso6 0SIi, Csak Dsn4 TemN B. ewerev 0.00 0.20 0.95 'Mal Plummorus Available fm Rermval In D.A. B Ub/yr) A.91 Post Development Tremment Vtlumeln DA.B)Ra) 7,814 rmeavopmspx uoxl O.aa MxlaLeannl+oxl 1.50 l.sa ISYMNS-Cwnlxml 1.95 1.95 T.11 3.45 6 a. Biwelenlim of or Mln-ISM[K nn at a0 0 0 0 0 15 a- a- a- B- 6 a.N-YUSU.a, S,.,Y,6lnrexnan bx Bp IO,a3 I 033 LOP m. SK 3,M0 Sn AQ e" lE9 aw Drainage Area C ASON is Bass CSos DSMb Tobb Maki CmerM Tmesyb Rn epares) Dw o.00 Mar+FN T,vf pueal 0.0 0,63 0.20 IlrpeMne Cmerlavn) GJ2 0.72 DES Total 1.35 Mal PM1oaPM1aus ASSAI.Me for Removal In S.A. C(lb/,) 1- East DevelopmentTremmeM Volume In DA. C Still 2.9W a.a. Grasi Cnannel NBShcsnp[031 ID ax5 a]a 0 to a@ ST) IS ead aBe Q13 a25 ahlrass Cam-IC/DMUSOeev51 N 0 0 0 0 15 SUR aW OID aW a[. GPNsOo-elvl[a Cnmpsta-ded WE as Per:mar :eee $Pe[ SUP m 0 0 0 OAq OW aW Sued e.a. BkMmI BY NS-m Okn4mvl arertrman l3R[tl91 011 aW O.N OLO ACO "'OS erenom NS"tNS-.DrcrennooNo al 1 all afizIS On S.azx DOz 14, Manufactured Treatment Devices laa. ma Dc�cc Be RRI amVr.[,en is a N,mrzav ee TII,S,Ym D.-Humq 0 0 0 0 It x0 B. aa0 O.aO we. Manu(a[tmne T1.1-11(tesm-Serem 0 SO 0 0 L$1B 4Bx9 a0 lW IS B. o6P Drainage Area D mralrye Am. A land Cwm lavBa) ASS; k5tlk CStlk DSolk TONk WNONMAS ru.eat/oce^sw[e U[ml 0.00 ON LASSUI Tun(,I Edo 0.40 0.20 aMamaa La.rpr.0 0.09 DOB 0.9S Tmal OA9 MTALIMPFRVpIXCOVERTRFAIFDIacI 0.00 A0.FA OIFCN: OK TOTAL MANAGED TURF ARM RDIIEDIMI DOO APFA CNECE: OR TOTAL RUNOFF REDUCTION IN OA.A (aal 0 TOTAL PHOSPHORUSAVAILABLE MR REMOVALIN D.A. A Bb/yal 0.11 TOTALPHOSPNORUS REMOVED WITH RUNOFF REDUCTION PRACTICESINOA.ABb/yrl DN iPHORUS REMAINING AMR APPLYING RUNOFF REDUCTION PRACTICES IN D.A. A Ob/yrl O31 SEE WATER QUALITY COMPLIANCE TAB FOR 517 COMPLIANCE CALCULATIONS MTALIMPERMOUSCOWRTPEAEEDIacI 1.95 AREACH-0K. TOTAL MANAGED TURF ARM TREATED IacI 10I AREA CHECK: OK TOTAL PHOSPHORUS REMOVAL REQUIRED ON SITE Bb/yr) 2Ad TOTAL PHOSPHORUS AVAILABLE FOR VED REMOVALIX O.A.BQb/yr) A.91 TOTAL PHOSPHORUS REMOWITHOUT RUNOFF REDUCTION PRACTICES:.' D.A B Bb/yrl lsl TOTAL PHOSPHORUS REMOVEDWITH RUNOFF REDOCIONPRACOCB IN D.A. BQb/yr) 1.29 TOTAL PHOSPHORUS LOAD REDUCTION ACHIEVED IND.A.BQIVYY L&) TOTAL PHOSPHORUS REMAINING AMR APPLYING OMPLOAD REDIFCOONS IN D.A. B BbIV) 2.11 Rb. a.-xx SEE WATER QUALITY COMPLIANCE TAB FOR SITE COMPLIANCE CALCUTA TIONS NITROGEN REMOVED WITH RUNOFF REDUCTONPMCTCFS IN D.A.BBb/yr) 11.69 NIEROGENREMOVEDWRHOUTRUNOFF REOIICTIONPMCOCES IX O.A.BQb/yr) D.W WTALNRPOGMREMOWDIHOA.B(lb/yr) 11.69 6.G BiaOlantlm LR TOTALIMPMWOMCOWRTRMT (-) 0.6] ARMCHECK: OR. TOTALFMNAGEDNRFARMTRMTW(ac) It" AREA CHECK: OK. TOTAL PHOSPHORUS REMOVAL REQUIRED ON SITE(Ib/yr) IJ/ TOTALPNOSPMORUSAVAIMBIE FOR REMOVAL IN DA.C(Ib/yr) 1.65 TOTALPHOSPHORUSREMOVED WIIXOUTRUNOFF RFOIKTOHPMCTCES IN D.A.[Bb/yr) OAb TOTAL PHOSPHORUS%EM.0 WITH RUNOFF REDUCTION PRACTICES NSSA kt/Yr) 0.34 TOTAL PHOSPHORUS LOAD REWCTION ACHIEVED IN DA: D.0 TOTAL PHOSPHORUS REMAINING AMR APPLYING SMPLOAD REDUCTIONS IN D.A. CBb/Yr) 1.05 SEE WATER QUALITY COMPLIANCE TAB FOR SITE COMPLIANCE CALCULATIONS TOTALIMPERV:OUSCOVERTRMTEDIad 0.00 ARM CHECK: OK TOTAL MANAGED TURF AREA TREATED IacI D.00 ARM CHECK, OR TOTAL RUNOFF REDUCTION IN D.A. 0(NO) 0 TOTAL PHOSPHORUS AVAILABLE FOR REM WAL IN DA.O (Ib/yal 0.3P TOTAL PHOSPHORUS REMOVEDWITH RUNOFF REDUCNUN PMCTRES IN OA.O (Ib/BY 0.00 DAL PHOSPHORUS REMAINING AFTER APPLYING RUNOFF REDUCTION PMCNCFS IN DA.DIIb/yTl 0.38 'Utal PIIDsilens ASSUME fins, RemmBI In DA. D (Ib/yr) 038 Past Dwe:apment TreMment VolumO In D.A. D(Ai) 601 SEE WATER QUALITY COMPLIANCE TAB FOR SITE COMPLIANCE CALCULATIONS Site Results (Water Quality Compliance) Area Checks e*/tie as 1p xl Im ml A: md-sto TLVA m:+tl SHE Ime ent Volume(Its) Runoff Peductnn Volume and TP By OTalms, Atea us ulu/vn 0 0v..1 Tr wm.annn,xxa nbnn xnaemxwaoetDumnx ApltvFn 114/.I 3K Thal phmphoms NOTE: wnP llb/v.I SITE PROVIDES TREATMENT BEYOND THE REQUIRED uuao Ile/v.l LOAD REDUCTION TO ACCOUM FOR THE REMOVAL OF Trw Mo nb/p AN E%]STING BIORETENTION TREATING PARKING AREA. xlxa...... 4 THE REMOVAL OF THE EXISTING BIORETENTION xtaulxxan mm mpyrl. •• REQUIRES AN ADDITIONAL 0.64 LB/YR LOAD Teen To aw eu asoeo Bvaas wryva •• REDUCTION THUS 0.65 LB/YR OVER THE REQUIREMENT IS PROVIDED. SEE CALL. BOOK FOR FURTHER DETAILS. TOW HitmBen IFor Information PMposea) THE OWNER RESERVES THE RIGHT TO APPLY THE 1-1 ono lla/v.l 0.01E BJYRTO UNNIS wO Ua/nl� PROSURPLUS ERTIES WITHIN PROPERTIESWITHINR9VAC2EHUC69-A.5 ER THE HE HUH AND UNDER uxlxnmsT-mWLGPM -TaoutxmS. ee/y.l SLIME OWNERSHIP PER 9VAC35-8]0-69-A.5 Bprtmtlon PRer•M• Deal lexl z Still 0 Somet ~eMOua a 0. Um wwr 0 � 0 Gi% M e:melinvm�me° D U,aPIIAN/1x B. TV Tom se Rawtt= V e CI ToaIM xevawm. rv- IS zan Cr AD Uet Bann, an De mmeem Fnmr- ass M1 MAI"a", m.l swn9e UNI Sulas Aee Mlnmame ]aPINI 51 $Iorelvillm FMLv'IC nLevel z IS Z111 B YIIT To, ONNUIPMANS an'a, a31 Ve MausudTarfast= Fa SAU .111 mom Ps OLDso me,�aN~yalnm= vxm ISnLF xa TV Frcmhale am -eastNanl. = OCF TWI and vmmmyl ssna Panda Vdmm BBRm.a fareIMUSS.m: Fore" Ones, Nmu n/aer[ukr Rwlaea Faeba Valune:I xRCF BbrteMlon mor'3A' Deaftelaven Still M a to NMOoa U.I BUR 'No. NuBI U. wl min arc.- an R ass 5M m.rceemNIVISS. m (LR4(R.I@)/u 1.ss iv Romu Artm Vn[0a= LO CF Tatll uxeydumara ML [F ON" INN d Mlm OS oodhof adamlhn aE Seaw."ss"I LIP o ml ZMNMDeNR LYS FT sapMArea Mnlmun Peal #55F v M D () eStl TIMMONS GROUP arle County Public Schools CROZET ELEMENTARY SCHOOLADDITION, RENOVATION AND SITE IMPROVEMENTS HIS Cma s Aremua, CmmL VA 22SKU VCOERoIed NAnber 0023aM101 VMDORgW NumMl 12Ba !On; C.. BY B. CICHOCKI Des". By K.ROESER Dann By K.ROESER MRSONNONESMUSE ANSI �O UPD . INS... PIUSSISTONS STORMWATER MANAGEMENT QUALITY BIORETENTION FILTER 2A NOTES: BIORETENTION FILTER 2C NOTES: BIORETENTION FILTER 3A NOTES: TWO FORMS OF PRETREATMENT PROI TWO FORMS OF PRETREATMENT PROVIDED TWO FORMS OF PRETREATMENT PROVIDED BY GRAVEL FLOW SPREADER AND UPSTREAM BY GRAVEL FLOW SPREADER AND UPSTREAM BY GRAVEL FLOW SPREADER AND UPSTREAM BY ISOLATOR ROW OF STORMTECH BY AN ACF TRASH GUARD CATCH BASIN BY A CRASS SWALE DIRECTING THE DETENTION SYSTEM. FILTER. DRAINAGE AREA TO THE PRACITCE. C6.3 vmDO ISYSE•pa—U1I—N,9Mall. Xpd RrvW nY ImyeOon.... 1-hRE, NO, ., entry e,emin NI MET.Aq e_N Ile OR 1Ny Yn XNebWgem mr ly YEI N r. �ba. ORRISIam 1wNabuM N,w lm llmq inual 1pamm lge. mem( NONE, I�, JepnrlrymORY xmlvMmR r.. Na 1.S—�ae rNn- —ENE E.,1.pmrmp tl.,.-maJ gmm.6uea upm RO alna 'ES, MORE eXIn NO-- muwrmn M repl—M.—,. Nr aaymfai IS pmpvh... ., 1NrypnlrlemliolN Ww MlNmpamnenrla SI amN� artll %.-III ohm meISM rvl W% aml�nlrar M— RENO,EI ,IN sa.Jm. ®I4reerml Wmrtron1 ar 111, — EEE 11 Impr•11I aral orrN iakrwrw,Im.,rvnn,es a,J.Mi„en,awvmulaJen AmMN Iamr NET rtml, a„J JeFir', rl OJd Jun,eAr.,ramnvnmr,x,: sN,mrn, r'r m„Imrt, nv,n,M1,NY Jvnw utl vlNuwpr urwwa:rm'p'ORE abWJM pererae afrurmxlnpwl,w6. rnnJinp x'um xl•r,e Nert , SeMtmwllY ranlJmreynf l M1e y.. I,, f evIRE Fv,ry a.N, Jvpeamtl IIwr.Jil(e•nunl -NY nvrMin .II -n 'I.,ak h. , E't IFV I. UM rnJ,.w ..—Ud pile ant art r,pr'nunJ I. NM1wela-fi¢orJ I,-ryplvrma.emN—.'ant— ..rlrrwl—O'Er "NEREa, o'Mrs. M ®YY (fist IN SEE —I ia,M1e li.'i, Me!Z'Iap'nrim v!-1.,l yalr... rants ar NIIn meWoie,l 4i oN Pwl'mmamnwal nTram mmlwmJ on,lru MmllNmusWJ v, u R."Smlunlnlmv+,r unlAe u,�arn,JN Ir•a NKKehtl ry a a. SEE, E,E—u'as w,J alumrd'r� hvune INVN� ,navvl . I .NaM1 XXY.•,mer_.mrprxwm,.a•p., .y vu .R BIORERX11d M...dYEIEC.dR sva Ya'Xm�a�r—m rxsX*R u.uYw ,rx Isw, REMn�I�rtl omwm MRSE. NNUI .. ..., _. e mam. �� Via. �w.e.•,'.Y,..'_. Y`a,L"1`.,. e.r r,..aa,.• . � C � .,.,.n,.,e. T..wm SE EME a$ F. wgnvummw xaerp®rxvew,. o•p, nbmm ervr r_nim m 1• wwnvonwrm raniEERI a rib w mv a Wpmamvmw,ewr_rY4,mf.Mrm, nbnm €j Ep •.. f 4• TIMMONS GROUP arle County Public Schools CROZET ELEMENTARY SCHOOLADDITION, RENOVATION AND SITE IMPROVEMENTS 1407a Aprrrr,arm,vAusa OMI 002a 101 1mo0v,gearvrmmr ima !On; a,R. Xy B. CICHOCKI ISR". NO KROESER MXX+^XY K.ROESER SUMEN ExoYExMra xv0 SNOUNISYSTO ]ul IlfKINWH28671 C6.4 vmDO PROJECT INFORAMTION ADVANCED DRAINAGE V5TEM5, INC. a CROZET ELEMENTARY SCHOOL CROZET, VA MC�-W SwTORM�T�ECH CIAMBwm�mE"�'6P�ECI�FICmlklNS ��nAR Ewa ': savr xorEnroRTlE eopl SLR tl�m�m"�n�NweE�R srcw�raTEn L. AWYEANCEN—USTNERSUB—SERMS.— E. SELTALUMEMBLE ANY ANUESS uxxmeeanw•euwcm=a nvxx H-AN ane—AA AMEN—AMER xaRE R1P'RTAVT-T16PROIEL•'R—INS CCMPAfiION Ci EMMEOMENT 8TOf@ANQREWIRdBITB FCR BTQTf IWiCRF%pNQBXAPE WXIGIARE N,T9£CIFIE} IN OTHER STORM. OSWENE.CWTML .M. FOLLOW THE8PCti4LL rWNGp9IN Txui rVdIEET. R. MARREME—SE—CESE, NQI'MS MR CONBTRNCMM CpIIPMEM •'E`ax m.'monaxrvcwfauw=vEwenE:Eu. RES wwwwnwm"xwwene.rw mm ww•wmn xn mrMI' u,xx mEnnwnwmwwe Ed g� f S s�� I I y e a li Is i Jill Tl Is i6 3 v 7 rR UUHSURE NOIEe 41 6.. MANT,w..w.e..m.,=wwm.,..,.wwm.xff.a Sg nI a Em. aa.,aim, mRE SE-1•.m•mme x.,=w.wEwa wE®ww ,aTmaaaE m,ww - -. .wwwnlm - & e -_ m' nFA�1 DEEP COVENMLgALPROVI81IM® nauuaer.as,M„ranwuma,umwww.uammnurvuwo®aanrreemmEw� ] �Oi S rRHP08En EL.—MARe aAI REm Fw„=.ow.,.ee,e,�e.r.nunw.xwm....�x.an„mwcm.u�m.w,aa,x�:„ EEE UNREST - mT=EiE.TwlEmamw.aEMla.m SHEASUREA w x`�:E" E MExw E" m�, EMEMBEERN x TWTED—BAm}1M 1 E \ yI _�®�w MEMORIES _�M Pmmwm..,. � m'wI M_ '�AE. ¢ERmHEMBm. RENTHER w.wlAT I�3f �� 1 A—ECm..-- VAR ASSEAR FOR\ "m EwEranwwsa. �6 acxess�w MENER.'EwE„nMn®wcman 27,71 ACCEPTABLE FILL MATERIALS: STORMTECH MC4900 CHAMBER SYSTEMS ! MITERLLL Z(SET0N pANA M."RQ" _P P/WITORV�TENXS cussipc_nnoxs WMPACIICN/OBMINWREO'JIREMENT �` 1 o aim :, ml"REST.Imma.. 1 THm....EE.m�,.Rnw. = w m" ..`.,mamm ME wvo,T. ,ww & s F ® E..m.m.m..w...maE aM."aa»EA M,TE=amawaew M.E. ,. ANI — �E,..H.B.— I nONMYBY—Ta n=E AFATErc.=a l ucwaeewvmunuauimwuwxrvxvawua,ex�n`iaen viurwammauwao=uxeaav�iaucaTr.naTaw.vmwula,Tar..rexezomT,eairwaEwavavu�Tm E E a �' mmEm.m�., ."'`' �'�"' a -�-W M c Txa:m,am MME.ummva,w !Ilgi t! ii r€ R m.. VEA—r.�.w,N- — xan,nxEa�.R,m.. �9 !I CII ELEMENTARY SCHOOL SPECIFIC CROSS SECTION NOTES: wMAZERxa1=ARE RES EMAmI. s IANYI ANAME.Tw ES m mEwm UNAMS11�.ere� HERSELATERE EI 4 OF wa,vnEmw�w,EraE.manna.mwnE.neE.revTa.aw,vee,.=,varx-.amowgaew.E.iMUemwn RREARTNE-01—mun. *OR APPROVED EQUAL MMM TIMMYOUR V45IGrvONSACHIEVErvGROUnPTHROUGH OU arle County Public Schools CROZET ELEMENTARY SCHOOLADDITION, RENOVATION AND SITE IMPROVEMENTS W7C Anrm Cmm1, NAY1di2 VMOO Rgep 01ffiEM,HnIYr NY31M101 NNUNNumM, 1RC ClwheE Sy B. CICHOCKI MAH'.IS, K. ROESER NTam Rv K.ROESER BRUSEANDRSINTSURS OUNISEEN E�AMS�MUSSIB MARENT. 6�IR]14 11XP79.7%EUI`: C6.5 vmDO MI MOLRTOM RON MAM. HE IMMMR qX trMAIN 1 MAI YRIE MY BE BY IF R. mn rmne-BEEMcLEREAVmr rt xoe rsneumm SENENina awsaww ,. EVEL— m.�mrm. ,'PVO MOPED HER PMROEINL 5 OF 7 MEiQiOGxo WPrMR Ne AL HE uxoEnExuxMErex ME xcawoiecxxmN ePecmranox ns IT FEN, —,,. HHA AMONT rxr meld mmo mro.mi MENIFEENNE .,.U.,wae .� MEET :nDI ,rummR BE M �..IS E.S.° MAN.. IiMEDAyam,.i�uui ,i` imo ASEESES-S ORBEEN. nm L S'EASHE -MI IE; IE; i d 5A 3� N I� MeexuM1ee xeruL BERESEARTME it It €vF.E.— ��� e� ��N x ...7 �... w,..,INET �SLAEFESCNUIIs "'> � E mmm; EI I i` I " w 7 OF 7 *OR APPROVED EQUAL TIMMONSYOUR VISION ACHIEVEoGROUpP e—arle/Courity Public Schools CROZET ELEMENTARY SCHOOLADDITION, RENOVATION AND SITE IMPROVEMENTS W7C fivvnm CmmLVAY%r2 OVIDOINFESYNLnIYr NY31 im vxoony.arvnmmr rma UYEDaxy B. CICHOCKI MAR". xY K.ROESER FERRARI K.ROESER NUMBEI ":ETUNAM.xxeNTx xxxI.,CES 6�[M714 1If: 79IIf-11 W C6.6 vmDO g g - A a sR a ms s A 35 s Q= ok OR TS, rh m of SEA ED mWE NUEES N STR 504 - STR 506 HORlzscALE .1— SHOURNEEN muTCHE RE ERE Big HC NES STED STR PCRN500 - STR 502 .� UG DETENTION - STR 134 N 1R.00 HIDED ME, 1'cW FORRE A11"ED a P Rs a aE s�¢�c aosm MEMEM MEME M 1-MMMMM ■■■■M ■■■■■■ ESTY RRA .HE 896E ARE UNDERDRUM UG DETENTIOPUHRN - STR 132 . m Nwo STR 100 - UG DETENTION 2 z� HERTZ ALE 1'ZP HER. SCALE I'2U' VERTRCALE T6 V WISCNE 11 STUR DUE OETENTION PETER IGOUTqIHOW— E. s`Q� xvou IS, DUE SANTEE C. DR CAUSERE 7� NEV 141 B OF VAR ANN BI ± ARE AMI AM SIR ARE PROPOSED 12 no ®%°AN HE G<u�� HE moo ��N 2.Ho UG DETENTION - STR 152 STR 108 - UG DETENTION FORIZ UALU:r=m FORM LE,l=m 1sH..a YWAU.RAAVS' SEN stl`R� ESPARI p INVIN 1580'N'N�pIM PeeF-SENORS, E � �111359' �wa TAIL 1 a 11s2CNR.'VAWU. 8 'WHIS BEEMBELnsml DEPOSITS E.DTANSPEORS, 7H.NVOUTERSOFF) FEE ME I TGBJ3 75 1 TOP FACIEi4 ... 1 GV! (TA1EVgR . YE TM RETENTION WITH ISgATMR(/N M' NEM 11.I1MM E1■1111 . � a'grim ■■■■■ THEENCHORAN R NA FEW 'EVERUG DETENTION -STR 146 STR 1261 HER 2wN STR 106 PROFILE UG DETENTION - PIPE 141 rvorvaswel-sa HERZ PLE.1VNW FORZ 1-C NES D. PROVE ED AI HER1O SERVICEYES HE Y AM EXISTING ..••� •4, TIMMONS GROUP YOUR V45IGN ACHIEVED THRDUGH OURS e--arle/Courity Public Schools ALBEM1 ARLE COUNTY PUBLIC SCHOOLS CROZET ELEMENTARY SCHOOLADDITION, RENOVATION AND SITE IMPROVEMENTS 1407CmstWver m, CYV W VA Y VE01FROHNYTIM" 0023100,101 VVDRD g NumMl 1RC !On; CnxRONN, B. CICHOCKI CON'. By K.ROESER LpmBy K.ROESER RESUMEMDREV OHM SUNNI AL CARS �O RESENNERANIRESUBMIESSIONIF SEMI BAN STR 140 - PIPE 143 .Po RUNS ME VCw STORM SEWER PROFILES C7.0 REEMSER DREENTO m @€ CISHE" 31319 PaYn 6i, INM.SO GIP l,,, MCIESSIDICAMEY INS art ergs pi1j VAN n9.u31SH 310: RAVES GYe SHENESTSEIENE 3 n w F1ON,.I 2AN'NNWIauEENIN-Dome Gnn 99CS FBI$ g $ 0 .B a IXBTOO.2AI o D3WI N I"' k� fig$$k Sm� i 7URES 9ISe awns ®n-Orn�Ilmom r`$C TO mt. 1 d$r _y�k3x[ ba� $a 30a[ ON m e„sa g, Glrt 1TE �' ale' 13AA NnTz d8"%�gre ] �. 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STIR 402 - EX STIR 408 PROFILE VEER VERY. 1--1 ] m ,«LD ,..m STIR204 - STIR218 PROFILE V�Lmsin 11 ,a.,yEVER E°;XGETAn,I TO R9 i 1 D"INSI w,..m-mnr IENNERIESSEAAREIN $ FF_ R PNC ,SInmR I]III Am NVODTOA331R�1 ROAVN %,am ��� mS.e�9�TEEAAMS 9,z,3'eaan uNESEI vMDO TIMMONS GROUP YOUR V45IGN ACHIEVED THROUGH OURS arle County Public Schools CROZET ELEMENTARY SCHOOLADDITION, RENOVATION AND SITE IMPROVEMENTS 1b]QoslArenu], CHEER VAY%,2 V EI4a.WHmE.r 002 1 101 VMDOR NumV,r im � GI i: memo a n; CRESESSM, B. CICHOCKI ISM". 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CICHOCKI ISR'Soaey K.ROESER naRRESav K.ROESER RESUI snal N.S. arc STORM SEWER TABLES C7.2 Section 6. Pollution Prevention Plan. (reference County Code 17-404 and State Regulation 9VAC25-880-70 part II section A.4) A. Plan showing pollution activities and prevention practices (Provide a reduced 1 lxl7 copy of a site plan on which all of the following activity locations are clearly marked. Keep this plan up-to-date with ongoing site changes and inspections.) Issued — 10/2022 Stonnwater Pollution Prevention Plan (SWPPP) Albemarle County CONCRETE �1 �SAN S \ I _ SANS YY \ tilYlp I I I II —J06 I I IAI\ "III — — — — DUMPSTER — — — CONSTRUCTION— _ _ — — — — TRAILER 11 _ TEMPORARY TOILETS r — — — PROPOSED -699- — _— — CONSTRUCTION It IIIIlI _� ENTRANCE CONCRETE WASHOUT / _ _ _ _ _ _ CONTRACTOR' I I1 / I — ----__—_STAGING AREA \I /IA \ `\\ 0 /Iq SQNCRETE 1, �Iir / CON$TRUCTIOPY p' ENTRMi I CROZET ELEMENTARY SCHOOL POLLUTION PREVENTION PLAN PHASE 1 - WP0202000039 February 5, 2021 ABOVE GROUND FUEL CONTAINER WITH IMPERMEABLE HEAVY -MIL _ LINER. VOLUME SUFFICIENT TO CONTAIN STORED FUELED / -j CONSTRUCTION _ .— \ — - VOLUME + 10% (GAS/DEISEL — — ' — TRAILER ` \ ` -- �` — RAIN GAUGE II ,696— TEMPORARY TOILETS i CONCRETE WASHOUT I / MORTAR MIXING STATION DUMPSTER- 1to Nv — 1 SCALE 1 "=80' 0 80' 1so' TIMMONS GROUP YOUR VISION ACHIEVED THROUGH OURS. \ CO CONCRETE - SANS \ 11r_a —r �r t = '-I I'I l I I I II -t06j I�1\ - - _ _ - DUMPSTER - / — — — -CONSTRUCTION - - - -TRAILER 1Y / _ _ _ _ -TEMPORARY TOILETS PROPOSED r `-0- - CONSTRUCTION ��1111%NCI - - - - _ - - ENTRANCE _ _ _ _ - - - - CONCRETE WASHOUT / ENTRANCE* _ - - - - - - - - CONTRACTOR -- - - - -- _STAGING AREA II �f /I it - SQNCREiF�AbkOUT ` \ \ W, 1 I 'CON.STRUCTIOPY II ENI' 1 I �V 1 � \ I 1 J Q - r In r 1Y uA 1<! iS < II <, TLk FA r�■ / CROZET ELEMENTARY SCHOOL POLLUTION PREVENTION PLAN PHASE 2 - WP0202000039 February 5, 2021 ABOVE GROUND FUEL CONTAINER WITH IMPERMEABLE HEAVY -MIL LINER. VOLUME SUFFICIENT TO CONTAIN STORED FUELED -� VOLUME + 10% (GAS/DEISEL J J CONSTRUCTION N 'TRAILER t = RAIN GAUGE I I III CONCRETE WASHOUT 6 / �/ TEMPORARY TOILETS 0 \\ MORTAR MIXING STATION - DUMPSTER e �C780 I I � I J < sP SCALE 1 "=80' 0 80, 160' TIMMONS GROUP YOUR VISION ACHIEVED THROUGH OURS. ` ABO� Gf20WID FUEL CONTAINER \-WITH imp�MEABLE HEAVY -MIL _ _ — —_ _ —SAN _ _ \ \ / 1 / ; �\ _ _ ss/ _ \LINE. (hl� ME SUFFICIENT TO - SAN _ _ _ — _ _ , - /' J -� "}��-•` ��-� \ \ IN STORED FUELED JQZM��I 10% (GAS/DEISEL) _ 1 _ _ Y �� PROO CONSTRUC� / \ �� JI /� . 1� v� \ ` ` —696- ENT �i ^ � 1 1 I / �� \' �- / 11iY1' ", 'CONCRETE WASHOUT -706 I MORTAR MIXING 1 I A\\ III STATION DUMPSTER I I CONSTRUCTION TRAILER RAINGAUGE ll,11,79 I���TI 1 \ TEMPORARY l MPORARY TOILET - CONSTRUCTIONy° I - - - - TRAILER ' �Y __ 1\ ( III I ° - _TEMPORARY TOILETS- - - = -PROPOSED _699- ` _ - - ENTRANCE CONSTRUCTION MI N Ir:l \ \ r J I� $V / i - - CONCRETE WASHOUT \ I / / / cl 41111 - - -- - - - - -- CONTRACTOR - - - - - - - STAGING AREA l l� I 1 ' / I!I ; / j/ / _ 1 \ \675- I_ / 10 -- 'l!1 Ir A- \\ - NCRETE\ HdL1T / ' / - - - j i / �i / // / - - / / - 6 VU p PO ' \\ -co S _ 674 SpN \\\\\\�\ ♦\ I \ \ II 1\\ /��%// �� // ice'/i%i/v - \ CROZET ELEMENTARY SCHOOL POLLUTION PREVENTION .••"•• SCALE 1"=80' PLAN PHASE 3- WP0202000039 0 80, 1so, T I M M O N S GROUP February 5, 2021 1& YOUR VISION ACHIEVED THROUGH OURS. SANS AB\DVV\GR®l4M FUEL CONTAINER — — WITH WPM ABLE HEAVY -MIL LINER. V00 4v1 SUFFICIENT TO Lu CONTAIN $ ft D FUELED VOLUME + 1{ % AS/DEISEL — 1 I , CONCRETE WASHOUT r � 15Q- MORTAR MIXING I11\1� g5 /1 STATION' / I \t— -:] DUMPSTER ` / CONSTRUCTION \ TRAILER I DUMPSTER - / \ RAIN GAUGE — — CONSTRUCTION r � y TEMPORARY TOILETS -- - -- -- -TRAILER-- - TEMPORARY TOILETS 1.00 I - - - PROPOSED CONSTRUCTION ENTRANCE ` _ r CONCRETE WASHOUT I I - - - - - - - - CONTRACTOR \dl - - - _ _ - - - STAGING AREA l / /A °� /960p 1117 ' - - - - - - PROPOSED PAVED CONSTRUCTION \ ENTRANCE WITH 1 \ \ SPRAY WASH 0 �- CROZET ELEMENTARY SCHOOL POLLUTION PREVENTION PLAN PHASE 4 - WP0202000039 February 5, 2021 _ - — 00�X '\675- J07 6 SO SCALE 1 "=80' 0 80' 1so' TIMMONS GROUP YOUR VISION ACHIEVED THROUGH OURS. rs. sources or roumants. Locations, ana Pollutant, or Pollutant Prevention Practices, Generating Activity Location on site Control Measures C. Sources of Pollutants continued. Common activities and minimum control and prevention practices Pollutant, or Pollutant Location on site Prevention Practices, Generating Activity Control Measures Follow Erosion and Sediment Control Clearing, grading, excavating, and on- Land disturbance area Plan. Dispose of clearing debris at stabilized areas acceptable disposal sites. Seed and mulch, or sod within 7 days of land clearing Cover storm drain inlets and use drip pans Paving operations Roads and driveways and absorbentloil dry for all paving machines to limit leaks ands ills Concrete washout shall occur in area Direct concrete wash water into a leak - Concrete washout and adjacent to the construction entrance as proof container or leak -proof settling basin cement waste designated on the Pollution Prevention that is designed so that no overflows can Plan. occur Enclose or cover material storage areas. Mix paint indoors in a containment area or Structure construction, stucco, Structures in a flat unpaved area. Prevent the painting and cleaning discharge of soaps, solvents, detergents and wash water, paint, form release oils and curing compounds. Dewatering if necessary when Water shall be filtered, settled or similarly Dewatering operations converting culvert inlet protection treated prior to discharge as shown on shown on plans plan. Designated areas for material delivery and Material delivery and storage Adjacent to construction entrance and storage. Placed near construction construction trailer, entrances, away from waterways and drainage paths Issued — 10/2022 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Pollutant, or Pollutant Location on site Prevention Practices, Generating Activity Control Measures Material use during building process Building areas Follow manufacturer's instructions. MSDS's attached. Waste collection area will not receive a substantial amount of runoff from upland areas and does not drain directly to a waterway. Containers have lids covered before periods of rain, or are in a covered area. Scheduled collection to prevent As provided by contractor overfilling. MATERIALS NOT TO BE Solid waste disposal BURIED ON -SITE Convenient and well -maintained portable sanitary facilities will be provided, and Sanitary waste Current locations shown on plan located away from waterways or Wets. Such facilities shall be regularly maintained. Apply fertilizers in accordance with Landscaping operations Landscape areas shown on plan manufacturer's recommendations and not during rainfall events To be treated in a sediment basin or better Wash area is located at the construction control as specified on plan. Minimize Wash Waters entrance. Adjacent diversion dike will the discharge of pollutants from divert wash water to sediment trap. equipment and vehicle washing Vehicle and equipment washing Designated areas and details shown on Provide containment and filtering for all Ian wash waters per the plan Minimization of exposure to precipitation and stormwater. Minimize the exposure of building materials, building products, construction wastes, trash, landscape materials, fertilizers, pesticides, herbicides, detergents, sanitary waste, and other materials present on the site to precipitation and to stormwater. D. Non-stormwater discharges Discharge Pollutants or Pollutant Location on Site Constituents Dust control water Sediment As shown on plan Issued — 10/2022 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County E. Persons responsible for pollution prevention practices (Provide the names and contact information for all persons responsible for prevention practices as listed above.) Albemarle County School Board Contact: Matt Wertman 401 McIntire Road Charlottesville, VA 22902 (434) 975 — 9340 mwertinan@kl2albemarle.org F. Response and reporting practices Minimize discharges from spills and leaks. Minimize the discharge of pollutants from spills and leaks and implement chemical spill and leak prevention and response procedures as follows. Respond to all spills, leaks and discharges as follows, Materials and equipment necessary for oil or chemical spill cleanup will be kept in the temporary material storage trailer onsite. Equipment will include, but not be limited to, brooms, dust pans, mops, rags, gloves, goggles, kitty litter, sand, saw dust, and plastic and metal trash containers. All oil or other chemical spills will be cleaned up immediately upon discovery. Identify and stop source of discharge. Use absorptive materials to soak up as much chemical as possible. Place all contaminated material in trash containers for disposal. Report all spills, leaks and discharges as follows, (Provide detailed response and reporting practices according to 9VAC25-880-70, Part II, section A.4.e.) Reports will be made to the following: Virginia Department of Emergency Management Emergency Operations Center (EOC) Phone: (800) 468-8892 Spills large enough to reach the storm sewers will be reported to the National Response Center at 1-800424-8802. G. Pollution Prevention Awareness (Describe training and procedures to provide awareness and compliance for all measures in this document; waste management, wash waters, prevention measures, etc.) The registered land disturber shall oversee all construction activities to implement and maintain pollution prevention measures. As such training and procedures shall be provided by contractor for each worker on site before they begin land disturbing activities. Training on implementation of erosion and sediment control devices/procedures must be provided by registered land disturber each time a new E&SC procedure is constructed. Issued — 10/2022 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 7. Discharges to impaired waters, surface waters within an applicable TMDL wasteload allocation, and exceptional waters. (Provide detailed measures for any applicable TMDL.) This site discharges to impaired waters as detailed on the following sheets. Enhanced inspection frequency is required as outlined below: (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. Addition items for implementation: (1) Permanent or temporary soil stabilization shall be applied to denuded areas within seven days after final grade is reached on any portion of the site. (2) Nutrients shall be applied in accordance with manufacturer's recommendations or an approved nutrient management plan and shall not be applied during rainfall events. Issued — 10/2022 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Bacteria TMDL Development for the Rivanna River Mainstem, North Fork Rivanna River, Preddy Creek and Tributaries, Meadow Creek, Mechums River, and Beaver Creek Watersheds Submitted by Virginia Department of Environmental Quality Prepared by THE Louis Berger Group, INC. 2445 M Street, NW Washington, DC 20037 Final Report March 2008 Executive Summary This report presents the development of bacteria TMDLs for the Rivanna River mainstem, North Fork Rivanna River, Preddy Creek and tributaries, Meadow Creek, Mechums River, and Beaver Creek watersheds. These water bodies were listed as impaired on Virginia's 303(d) Total Maximum Daily Load Priority List and Reports (DEQ, 1998, 2002, 2004, 2006) because of violations of the state's water quality standards for E. coli and for fecal coliform bacteria. Description of the Study Area The bacteria impaired Rivanna River watershed is located within the borders of Albemarle, Greene, Nelson, and Orange counties. The city of Charlottesville is also within the watershed's boundaries. All impaired streams are located in the Rivanna River watershed (USGS Cataloging Unit 02080204). The entire Rivanna River bacteria impaired watershed is approximately 321,877 acres. Impairment Description Segments of the Rivanna River mainstem, North Fork Rivanna River, Preddy Creek and tributaries, Meadow Creek, Mechums River, and Beaver Creek were listed as bacteria impaired on Virginia's 2002, 2004, and/or 2006 303(d) Total Maximum Daily Load Priority List and Reports due to violations of the state's water quality standard for fecal coliform bacteria and/or E. coh. The impaired segments are located in the Rivanna River Basin in central Virginia. The watershed is located in the hydrologic unit (HUC) 02080204. The impaired watersheds include the City of Charlottesville and portions of Albemarle, Greene, Orange, and Nelson counties. The impaired segment of the Rivanna River (VAV-H28R-RVNOIA00) extends 5.28 miles along the mainstem from the confluence of the North Fork Rivanna River to Moores Creek. This segment of the Rivanna River was first listed on the 2006 305(b)/303(d) Water Quality Assessment Integrated Report for exceedances of the E. coli standard. During the 2006 assessment period (January 200 through December 2004), 2 Executive Summary E-1 out of 9 samples (22%) collected at listing station 2-RVN037.54 exceeded the E. coli criterion of 235 cfu/100 ml The impaired segment of Beaver Creek (VAV-H23R-BVR02AO4) extends 4.8 miles from its headwaters to Beaver Creek Reservoir. This segment of Beaver Creek was first listed on the 2004 305(b)/303(d) Water Quality Assessment Integrated Report for exceedances of the fecal coliform standard. During the 2004 assessment period (January 1998 through December 2002), 2 out of 16 fecal coliform samples (13%) collected at listing station 2-BVR005.70 exceeded the fecal coliform standard instantaneous of 400 cfu/100 MI. This segment remained on the 303(d) list in the 2006 Water Quality Assessment Report. The impaired segment of Meadow Creek (VAV-H28R-MWCOIA00) extends 4.01 miles from its headwaters to the confluence of the Rivanna River. This segment of Meadow Creek was first listed on the 2002 303(d) Water Quality Assessment Integrated Report for exceedances of the fecal coliform standard. During the 2002 assessment period (January 1996 through December 2000), 4 out of 23 fecal colifonn samples (17%) collected at listing station 2-MWC000.60 exceeded the fecal coliform instantaneous standard of 400 cfu/100 MI. The impaired segment of the Mechums River (VAV-H23R-MCMOIA00) extends 10.44 miles from the confluence of the Lickinghole Creek to the Moormans River. This segment of the Mechums River was first listed on the 2006 305(b)/303(d) Water Quality Assessment Integrated Report for exceedances of the E. coli standard. During the 2006 assessment period (January 2000 through December 2004), 2 out of 18 samples (11%) collected at listing station 2-MCM005.12 exceeded the E. coli criterion of 235 cfu/100 MI. The impaired segment of the North Fork Rivanna River (VAV-H27R-RRNOIA00) extends 10.38 miles from the public water intake to the confluence of the Rivanna River. This segment of the North Fork Rivanna River was first listed on the 2006 305(b)/303(d) Water Quality Assessment Integrated Report for exceedances of the E. coli standard. During the 2006 assessment period (January 2000 through December 2004), 3 out of 9 Executive Summary E-2 samples (33%) collected at listing station 2-RRN002.19 exceeded the E. coli criterion of 235 cfu/100 ml. The impaired segment of Preddy Creek and its tributaries (VAV-H27R-PRDOlA00) extends 25.96 miles from its headwaters to the confluence of the Rivanna River. This segment of Preddy Creek was first listed on the 2006 305(b)/303(d) Water Quality Assessment Integrated Report for exceedances of the E. coli standard. During the 2006 assessment period (January 2000 through December 2004), 3 out of the 9 samples (33%) collected at listing station 2-PRD000.21 exceeded the E. coli criterion of 235 cfu/l00 ml. During this same period, only 1 out of the 9 samples (11%) collected at listing station 2- PRD004.42 exceeded the E. coli criterion of 235 cfu/100 ml. Applicable Water Quality Standards At the time of the initial listing of Rivanna River mainstem, North Fork Rivanna River, Preddy Creek and tributaries, Meadow Creek, Mechums River, and Beaver Creek segments, the Virginia Bacteria Water Quality Standard was expressed in fecal coliform bacteria; however, the bacteria water quality standard has recently been changed, and is now expressed in E. coh. Virginia's bacteria water quality standard currently states that E. coli bacteria shall not exceed a geometric mean of 126 E. coh counts per 100 mL of water for two or more samples within a calendar month, or an E. coh concentration of 235 counts per 100 mL of water at any time. However, the loading rates for watershed - based modeling are available only in terms of the previous standard, fecal coliform bacteria. Therefore, the TMDL was expressed in E. coli by converting modeled daily fecal coliform concentrations to daily E. coh concentrations using an in -stream translator. This TMDL was required to meet both the geometric mean and instantaneous E. colt water quality standard. Watershed Characterization The land use characterization for the Rivanna River watershed was based on a combination of land cover data from the National Land Use Land cover data set (NLCD) using 2001 reference data and the Virginia Department of Forestry 2005 land use data. Executive Summary E-3 Dominant land uses in the watershed are forest (64%) and agriculture (21%). These account for a combined 85% of the total land area in the watershed The potential sources of fecal coliform include run-off from livestock grazing, manure applications, industrial processes, residential, and domestic pets waste. Some of these sources are driven by dry weather and others are driven by wet weather. The potential sources of fecal coliform in the watershed were identified and characterized. These sources include permitted point sources, failed septic systems and straight pipes, livestock, wildlife, and pets. TMDL Technical Approach The Hydrologic Simulation Program -Fortran (HSPF) model was selected and used as a tool to predict the in -stream water quality conditions of the delineated watershed under varying scenarios of rainfall and fecal coliform loading. HSPF is a hydrologic, watershed -based water quality model. The results from the model were used to develop the TMDL allocations based on the existing fecal coliform load. Basically, this means that HSPF can explicitly account for the specific watershed conditions, the seasonal variations in rainfall and climate conditions, and activities and uses related to fecal coliform loading. The modeling process in HSPF starts with the following steps e delineating the watershed into smaller subwatersheds e entering the physical data that describe each subwatershed and stream segment e entering values for the rates and constants that describe the sources and the activities related to the fecal coliform loading in the watershed The Rivanna River watershed was delineated into 41 smaller subwatersheds to represent the watershed characteristics and to improve the accuracy of the HSPF model. Of these 41 representing the entire Rivanna River watershed, 28 were within the bacteria impaired watershed. This delineation was based on topographic characteristics, and was created using a Digital Elevation Model (DEM), stream reaches obtained from the National Hydrography Dataset (NHD), and stream flow and in -stream water quality data. Executive Summary E-4 Stream flow data were available from the U.S. Geological Survey (USGS). Weather data were obtained from the National Climatic Data Center (NCDC). The data used in the model include meteorological data (hourly precipitation) and surface airways data (including wind speed/direction, ceiling height, dry bulb temperature, dew point temperature, and solar radiation). The period of January 1998 to December 2006 was used for HSPF hydraulic calibration and validation. The hydrologic calibration parameters were adjusted until there was a good agreement between the observed and simulated stream flow, thereby indicating that the model parameterization is representative of the hydrologic characteristics of the study areas. The model results closely matched the observed flows during low flow conditions, base flow recession and storm peaks. Instream water quality data for the calibration was retrieved from DEQ, and was evaluated for potential use in the set-up, calibration, and validation of the water quality model. The existing fecal coliform loading was calculated based on current watershed conditions. Since Virginia has recently changed its bacteria standard from fecal coliform to E. coli the modeled fecal coliform concentrations were changed to E. coli concentrations using a translator. TMDL Calculations The TMDL represents the maximum amount of a pollutant that the stream can receive without exceeding the water quality standard. The load allocation for the selected scenarios was calculated using the following equation: Where, TMDL = E WLA +2] LA + MOS WLA = wasteload allocation (point source contributions); LA = load allocation (non -point source allocation); and MOS = margin of safety. Executive Summary E-5 The margin of safety (MOS) is a required component of the TMDL to account for any lack of knowledge concerning the relationship between effluent limitations and water quality. The MOS was implicitly incorporated in this TMDL. Implicitly incorporating the MOS required that allocation scenarios be designed to meet a 30-day geometric mean E. coli standard of 126 cfu/100 mL and the instantaneous E. coli standard of 235 cf i/100 mL with 0% exceedance. Typically, there are several potential allocation strategies that would achieve the TMDL endpoint and water quality standards. A number of load allocation scenarios were developed to determine the final TMDL load allocation scenario. For the hydrologic period of January 2000 to December 2006, fecal coliform loading and instream fecal coliform concentrations were estimated for the various scenarios using the developed HSPF model of the Rivanna River mainstem, North Fork Rivanna River, Preddy Creek and tributaries, Meadow Creek, Mechums River, and Beaver Creek. After using the instream translator, the TMDL allocation plan was developed to meet geometric mean and instantaneous E. coli standards. Based on the load -allocation scenario analyses, the daily TMDL allocation plans that will meet the 30-day E. coli geometric mean water quality standard of 126 cfu/100 mL and the instantaneous E. coli water quality standard of 235 cfu/100 mL are presented in Table E-1. Executive Summary E-6 E-1: Allocation Plan Loads for E. coli (% reduction) for the Rivanna River mainstem, NorthTable Fork Rivanna River, PreddyMechums and Beaver Watershed Human Sources Livestock Agricultural Wildlife (failed septic (Direct and urban (Direct systems and Instream non point Instream straight pipes) Loading) sources Loading) Rivanna River 100% 100% 95% 76% VAV-H28R-RVNOIA00 North Fork Rivanna River VAV-H27R-RRNOIA00 100% 100% 95% 92% Preddy Creeks and Tributaries 100% 100% 95% 72% VAV-H27R-PRDOIA00 Meadow Creek VAV-H28R-MWCOIA00 100% 100% 95% 48% Mechums River 100% 100% 95% 76% VAV-H23R-MCMOIA00 Beaver Creek 100% 100% 95% 66% VAV-H23R-BVR02A04 The summaries of the daily bacteria TMDL allocation plan loads for the Rivanna River mainstem, North Fork Rivanna River, Preddy Creek and tributaries, Meadow Creek, Mechums River, and Beaver Creek are presented in Table E-2. Table E-3 summarizes the yearly bacteria TMDL allocation plan loads. Table E-2: Rivanna River mainstem, North Fork Rivanna River, Preddy Creek and Ili Meadow Beaver Creek TMDL Loads for E. coli d. WLA (Point LA MOS Watershed Sources) (Nonpoint (Margin of TMDL sources) safety) Rivanna River 3.72E+10 4.11E+l l Implicit 4.48E+11 VAV-H28R-RVNOIA00 North Fork Rivanna River 9.88E+09 1.62E+11 Implicit 1.72E+11 VAV-H27R-RRNOIA00 Preddy Creeks and Tributaries 6.67E+08 5.91E+10 Implicit 5.97E+10 VAV-H27R-PRDOIA00 Meadow Creek 4.08E+10 2.36E+10 Implicit 6.44E+10 VAV-H28R-MWCOIA00 Mechums River 906E+07 3.50E+10 Implicit 3.51E+10 VAV-H23R-MCMOIA00 Beaver Creek 2.60E+08 1.12E+10 Implicit 1.14E+10 VAV-H23R-BVR02A04 Executive Summary E-7 Table Ina River mainstern, North Fork Rivanna1 1 I I tributaries,11w Creek, Mechurnsand Beaver Creek TMDLAllocation Plan Loads for E. coli (effi/year) WLA (Point LA MOS Watershed Sources) (Nonpoint (Margin of TMDL sources) safety) Rivanna River 4.93E+12 4.1 IE+13 Implicit 4.60E+13 VAV-H28R-RVNOIA00 North Fork Rivanna River 2.15E+12 1.54E+13 Implicit 1.75E+13 VAV-H27R-RRNOIA00 Preddy Creeks and Tributaries 2.43E+11 5.58E+12 Implicit 5.83E+12 VAV-H27R-PRDOIA00 Meadow Creek 3.89E+12 2.23E+12 Implicit 6.12E+12 VAV-H28R-MWCOlA00 Mechums River 3.31E+10 3.31E+12 Implicit 3.34E+12 VAV-H23R-MCMOIA00 Beaver Creek 3.29E+10 1.07E+12 Implicit 1. IOE+12 VAV-H23R-BVR02A04 TMDL Implementation The Commonwealth intends for this TMDL to be implemented through best management practices (BMPs) in the watershed. Implementation will occur in stages. The benefits of staged implementation are: 1) as stream monitoring continues to occur, it allows for water quality improvements to be recorded as they are being achieved; 2) it provides a measure of quality control, given the uncertainties that exist in any model; 3) it provides a mechanism for developing public support; 4) it helps to ensure the most cost effective practices are implemented initially, and 5) it allows for the evaluation of the TMDL's adequacy in achieving the water quality standard. Table E-4 provides load reduction targets for staged implementation achieving a 10% instantaneous standard violation reduction for each TMDL watershed. While section 303(d) of the Clean Water Act and current EPA regulations do not require the development of TMDL implementation plans as part of the TMDL process, they do require reasonable assurance that the load and wasteload allocations can and will be implemented. Additionally, Virginia's 1997 Water Quality Monitoring Information and Restoration Act (the "Act") directs the State Water Control Board to "develop and implement a plan to achieve fully supporting status for impaired waters" (Section 62. 1 - Executive Summary E-8 44.19.7). The Act also establishes that the implementation plan shall include the date of expected achievement of water quality objectives, measurable goals, corrective actions necessary and the associated costs, benefits and environmental impacts of addressing the impairments. EPA outlines the minimum elements of an approvable implementation plan in its 1999 "Guidance for Water Quality -Based Decisions: The TMDL Process." The listed elements include implementation actions/management measures, timelines, legal or regulatory controls, time required to attain water quality standards, monitoring plans, and milestones for attaining water quality standards. Once developed, DEQ intends to incorporate the TMDL implementation plan into the appropriate Water Quality Management Plan (WQMP), in accordance with the Clean Water Act's Section 303(e). In response to a Memorandum of Understanding (MOU) between EPA and DEQ, DEQ also submitted a draft Continuous Planning Process to EPA in which DEQ commits to regularly updating the WQMPs. Thus, the WQMPs will be, among other things, the repository for all TMDLs and TMDL implementation plans developed within a river basin. Executive Summary E-9 Table mainstent North Fork Rivanna1 1 an 1 tributaries,11' Creek, MechunisI Beaver Creek TMIDL_ I 11 Scenario I% Instantaneous Stan1 1 Violation violation of violation of Failed Direct NPS NPS Direct GM Inst. Watershed Septics & Livestock (Agricultural) (Urban) Wildlife standard standard Pipes 126 235 #/100m1 #/IOOMI Rivanna River VAV-H28R- 100% 92% 0% 0% 0% 14.7% 10% RVNOIAOO North Fork Rivanna River 100% 100% 50% 58% 0% 21% 10% VAV-H27R- RRNOIAOO Preddy Creeks and Tributaries 100% 100% 50% 48% 0% 36.8% 10% VAV-H27R- PRDOlA00 Meadow Creek VAV-H28R- 100% 100% 0% 23% 0% 27% 10% MWCOIAOO Mechums River VAV-H23R- 100% 100% 55% 0% 0% 33% 10% MCMOIAOO Beaver Creek VAV-H23R- 100% 95% 0% 0% 0% 31.4% 10% BVR02AO4 Executive Summary E-10 Section 8. Qualified personnel The following personnel are responsible for inspections; (Provide the name, telephone number, and qualifications of the qualified personnel conducting inspections.) Albemarle County School Board Contact: Matt Wertman 401 McIntire Road Charlottesville, VA 22902 (434) 975 — 9340 mwertman@k 12albemarle.org Issued — 10/2022 Stonnwater Pollution Prevention Plan (SWPPP) Albemarle County Section 9. Signed Certification 1 :m WAC25-870-370.) 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." Owner/Operator Name: C. Matthew Wertman Company: Albemarle County Public Schools p Y� Title: Deputy Director of Building Services Signature: -7 Date: 10/21 /22 Issued — 10/2022 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 10. Delegation of authority. (Provide the persons or positions with authority to sign inspection reports or to modify the stormwater pollution prevention plan. A formal, signed delegation of authority is needed.) 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: Company: Title: Signature: Date: Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 11. General permit copy (Provide a copy of the construction general permit, 9VAC25-880) Issued — 10/2022 Stonnwater Pollution Prevention Plan (SWPPP) Albemarle County COMMONWEALTH of VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY General Permit No.: VAR10 Effective Date: July 1, 2019 Expiration Date: June 30, 2024 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 the registration statement filed with the Department of Environmental Quality, 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 in this general permit. Construction General Permit Effective July 1, 2019 Page 2 of 26 192TO 1 DISCHARGE AUTHORIZATION AND SPECIAL CONDITIONS A. Coverage under this general permit. 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. 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. 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. 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. Page 3 of 26 4. Impaired waters and total maximum daily load (TMDL) limitation. Nutrient and sediment impaired waters. Discharges of stormwater from construction activities to surface waters identified as impaired in the 2016 § 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 stormwater pollution prevention plan (SWPPP) in accordance with Part II B 5 of this permit that minimizes the pollutants of concern and, when applicable, is consistent with the assumptions and requirements of the approved TMDL wasteload allocations and implements an inspection frequency consistent with Part II G 2 a. Polychlorinated biphenyl (PCB) impaired waters. Discharges of stormwater from construction activities that include the demolition of any structure with at least 10,000 square feet of floor space built or renovated before January 1, 1980, to surface waters identified as impaired in the 2016 § 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 PCB are not eligible for coverage under this general permit unless the operator develops, implements, and maintains a SWPPP in accordance with Part II B 6 of this permit that minimizes the pollutants of concern and, when applicable, is consistent with the assumptions and requirements of the approved TMDL wasteload allocations, and implements an inspection frequency consistent with Part II G 2 a. Exceptional waters limitation. Discharges of stormwater from construction activities not previously covered under the general permit effective on July 1, 2014, to exceptional waters identified in 9VAC25-260-30 A 3 c are not eligible for coverage under this general permit unless the operator develops, implements, and maintains a SWPPP in accordance with Part II B 7 of this permit and implements an inspection frequency consistent with Part II G 2 a. 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. D. Prohibition of nonstormwater discharges. Except as provided in Parts I A 2, 1 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; Page 4 of 26 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, managed in a manner to avoid an instream impact; 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, unless a registration statement was not required to be submitted in accordance with 9VAC25-880-50 A 1 c or A 2 b for single-family detached residential structures, to the VSMP authority after one or more of the following conditions have been met: Page 5 of 26 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 has operational control. When applicable, long term responsibility and maintenance requirements for permanent control measures shall be recorded in the local land records prior to the submission of a complete and accurate notice of termination and the construction record drawing prepared; 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 individual lots in residential construction only, final stabilization as defined in 9VAC25- 880-1 has been completed, including providing written notification to the homeowner and incorporating a copy of the notification and signed certification statement into the SWPPP, and the residence has been transferred to the homeowner. The notice of termination shall be submitted no later than 30 days after one of the above conditions in subdivision 1 of this subsection is met. 3. Termination of authorization 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 a complete and accurate notice of termination in accordance with 9VAC25-880-60 C, whichever occurs first. 4. 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 unless otherwise notified by the VSMP authority or department. 5. The notice of termination shall be signed in accordance with Part III K of this general permit. G. Water quality protection. 1. The operator shall 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. 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 C 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 Page 6 of 26 c. Submit an individual permit application in accordance with 9VAC25-870-410 B 3. All written responses required under this chapter shall include a signed certification consistent with Part III K. 7_1:M STORMWATER POLLUTION PREVENTION PLAN A. Stormwater pollution prevent 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 B. 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 shall develop the missing elements and include them in the SWPPP. 3. Any operator that was authorized to discharge under the general permit effective July 1, 2014, 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. B. 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: Page 7 of 26 (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; (5) Locations where concentrated stormwater is discharged; (6) Locations of any support activities, including (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 as allowed by Part II G 2 a (1) (ii) or Part II G 2 b (2). Erosion and sediment control plan. a. An erosion and sediment control plan designed and approved in accordance with the Virginia 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. b. All erosion and sediment control plans shall include a statement describing the maintenance responsibilities required for the erosion and sediment controls used. c. An 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, implemented to: (1) Control the volume and velocity of stormwater runoff within the site to minimize soil erosion; (2) Control stormwater discharges, including peak flow rates and total stormwater volume, to minimize erosion at outlets and to minimize downstream channel and stream bank erosion; Page 8 of 26 (3) Minimize the amount of soil exposed during the construction activity; (4) Minimize the disturbance of steep slopes; (5) Minimize 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) Provide and maintain natural buffers around surface waters, direct stormwater to vegetated areas to increase sediment removal, and maximize stormwater infiltration, unless infeasible; (7) Minimize soil compaction and, unless infeasible, preserve topsoil; (8) Ensure initiation of stabilization activities, as defined in 9VAC25-880-1, of disturbed areas 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 (9) Utilize 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. Except for those projects identified in Part II B 3 b, 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. b. For any operator meeting the conditions of 9VAC25-870-47 B of the VSMP regulation, an approved stormwater management plan is not required. In lieu of an approved stormwater management plan, 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. 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; Page 9 of 26 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); (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 Page 10 of 26 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, waste concrete, and sanitary wastes; (8) Address any other discharge from the potential pollutant -generating activities not addressed above; (9) Minimize the exposure of waste materials to precipitation by closing or covering waste containers during precipitation events and at the end of the business day, or implementing other similarly effective practices. Minimization of exposure is not required in cases where the exposure to precipitation will not result in a discharge of pollutants; 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. SWPPP requirements for discharges to nutrient and sediment impaired waters. For discharges to surface waters (i) identified as impaired in the 2016 § 305(b)/303(d) Water Quality Assessment Integrated Report or (ii) with an applicable TMDL wasteload allocation established and approved prior to the term of this general permit for sediment for a sediment - related parameter (i.e., total suspended solids or turbidity) or nutrients (i.e., nitrogen or phosphorus), the operator shall: a. Identify the impaired waters, approved TMDLs, and pollutants of concern in the SWPPP; and b. Provide clear direction in the SWPPP that: (1) Permanent or temporary soil stabilization shall be applied to denuded areas within seven days after final grade is reached on any portion of the site; (2) Nutrients shall be applied in accordance with manufacturer's recommendations or an approved nutrient management plan and shall not be applied during rainfall events; and (3) A modified inspection schedule shall be implemented in accordance with Part II G 2 a. SWPPP requirements for discharges to polychlorinated biphenyl (PCB) impaired waters. For discharges from construction activities that include the demolition of any structure with at least 10,000 square feet of floor space built or renovated before January 1, 1980, to surface waters (i) identified as impaired in the 2016 § 305(b)/303(d) Water Quality Assessment Integrated Report or (ii) with an applicable TMDL wasteload allocation established and approved prior to the term of this general permit for PCB, the operator shall: Page 11 of 26 a. Identify the impaired waters, approved TMDLs, and pollutant of concern in the SWPPP; b. Implement the approved erosion and sediment control plan in accordance with Part II B 2; c. Dispose of waste materials in compliance with applicable state, federal, and local requirements; and d. Implement a modified inspection schedule in accordance with Part II G 2 a. 7. SWPPP requirements for discharges to exceptional waters. For discharges to surface waters identified in 9VAC25-260-30 A 3 c as an exceptional water, the operator shall: a. Identify the exceptional surface waters in the SWPPP; and b. Provide clear direction in the SWPPP that: (1) Permanent or temporary soil stabilization shall be applied to denuded areas within seven days after final grade is reached on any portion of the site; (2) Nutrients shall be applied in accordance with manufacturer's recommendations or an approved nutrient management plan and shall not be applied during rainfall events; and (3) A modified inspection schedule shall be implemented in accordance with Part II G 2 a. 8. Identification of qualified personnel. The name, phone number, and qualifications of the qualified personnel conducting inspections required by this general permit. 9. Delegation of authority. The individuals or positions with delegated authority, in accordance with Part III K, to sign inspection reports or modify the SWPPP. 10. SWPPP signature. The SWPPP shall be signed and dated in accordance with Part III K. C. 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. The SWPPP shall 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 shall be accomplished as described in Part II H. Page 12 of 26 3. The SWPPP shall clearly identify the contractors 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 as soon as possible but 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 were modified; 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 G. 5. Amendments, modifications, or updates to the SWPPP shall be signed in accordance with Part III K. D. 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. E. 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. Page 13 of 26 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 shall be posted near the main entrance of the construction site. 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 D. 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. F. 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. All control measures shall 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 G identifies a control measure that is not operating effectively, corrective actions 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. If site inspections required by Part II G identify an existing control measure that needs to be modified or if an additional or alternative 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 additional or 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. G. 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 ensuring that the qualified personnel conduct the inspection. 2. Inspection schedule. a. For construction activities that discharge to a surface water identified in Part 11 B 5 and B 6 as impaired or having an approved TMDL or Part I B 7 as exceptional, the following inspection schedule requirements apply: (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 24 hours following a measurable storm event. In the event that a measurable storm event occurs when Page 14 of 26 there are more than 24 hours between business days, the inspection shall be conducted on the next business day; and (2) Representative inspections as authorized in Part II G 2 d shall not be allowed. b. Except as specified in Part II G 2 a, inspections shall be conducted at a frequency of: (1) At least once every five business days; or (2) At least once every 10 business days and no later than 24 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 24 hours between business days, the inspection shall be conducted on the next business day. c. 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 described in Part II G 2 a and 2 b 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. d. Except as prohibited in Part II G 2 a (2), 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 inspection report required by Part II G. e. If adverse weather causes the safety of the inspection personnel to be in jeopardy, the inspection may be delayed until the next business day on which it is safe to perform the inspection. Any time inspections are delayed due to adverse weather conditions, evidence of the adverse weather conditions shall be included in the SWPPP with the dates of occurrence. 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; Page 15 of 26 (2) Record the information and a description of any discharges occurring at the time of the inspection or evidence of discharges occurring prior to 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 and effective impoundment or flow control; (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 channels, flumes, 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 or public roads for minimizing sediment tracking; (5) Inspect areas that have reached final grade or that will remain dormant for more than 14 days to ensure: (a) Initiation of stabilization activities have occurred immediately, as defined in 9VAC25-880-1; and (b) Stabilization activities have been completed within seven days of reaching grade or stopping work; (6) 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: Page 16 of 26 (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 sediment 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 or is not effective 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 or sediment deposition outside of the approved area to be disturbed; (7) Inspect pollutant generating activities identified in the pollution prevention plan for the proper implementation, maintenance, and effectiveness of the procedures and practices; (8) Identify any pollutant generating activities not identified in the pollution prevention plan; and (9) 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 locations of prohibited discharges; d. The locations of control measures that require maintenance; Page 17 of 26 e. The locations of control measures that failed to operate as designed or proved inadequate or inappropriate for a particular location; f. The locations where any evidence identified under Part II G 3 a (6) exists; g. The locations where any additional control measure is needed; 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 The date and signature of the qualified personnel and the operator or its duly authorized representative. 5. The inspection report shall be included into the SWPPP no later than four business days after the inspection is complete. The inspection report and any actions taken in accordance with Part II shall 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. H. Corrective actions. The operator shall implement the corrective actions 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. 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. Page 18 of 26 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 shall 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. 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 individuals who performed the sampling or measurements; c. The dates and times analyses were performed; d. The individuals 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. Page 19 of 26 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. 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 terminating this general permit coverage 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; Page 20 of 26 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 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. 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 in this general permit, 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 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. 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; Page 21 of 26 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 1 1 or 2 in writing as part of the SWPPP. The reports shall contain the information listed in Part 111 1 2. 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. 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 Page 22 of 26 manager is authorized to make management decisions that govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long-term compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for state permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures; b. For a partnership or sole proprietorship: by a general partner or the proprietor, respectively; or c. For a municipality, state, federal, or other public agency: by either a principal executive officer or ranking elected official. For purposes of this chapter, a principal executive officer of a public agency includes (i) the chief executive officer of the agency or (ii) a senior executive officer having responsibility for the overall operations of a principal geographic unit of the agency. 2. Reports and other information. 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 III 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 III 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 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 shall 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 Page 23 of 26 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 coverage, 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 60 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. 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. Page 24 of 26 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. 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. Page 25 of 26 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 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 shall be kept under the conditions of this general permit; 2. Have access to and copy, at reasonable times, any records that shall 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. Page 26 of 26 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. X. State permit actions. State permit coverage 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 permit coverage. 1. State permits are not transferable to any person except after notice to the department. Except as provided in Part III Y 2, a state permit may be transferred by the operator to a new operator only if the state permit has been modified or revoked and reissued, or a minor modification made, to identify the new operator and incorporate such other requirements as may be necessary under the Virginia Stormwater Management Act and the Clean Water Act. As an alternative to transfers under Part III Y 1, this state permit may be automatically transferred to a new operator if: a. The current operator notifies the department at least 30 days in advance of the proposed transfer of the title to the facility or property; b. The notice includes a written agreement between the existing and new operators containing a specific date for transfer of state permit responsibility, coverage, and liability between them; and c. The department does not notify the existing operator and the proposed new operator of its intent to modify or revoke and reissue the state permit. If this notice is not received, the transfer is effective on the date specified in the agreement mentioned in Part III Y 2 b. 3. For ongoing construction activity involving a change of operator, the new operator shall accept and maintain the existing SWPPP, or prepare and implement a new SWPPP prior to taking over operations at the site. Z. Severability. The provisions of this general permit are severable, and if any provision of this general permit or the application of any provision of this state permit to any circumstance, is held invalid, the application of such provision to other circumstances and the remainder of this general permit shall not be affected thereby. Section 12. Inspection logs (Provide templates for your inspections. Requirements are listed in 9VAC25-880-70, Part II, section B and F.) INSPECTION FREQUENCY: (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 24 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 24 hours between business days, the inspection shall be conducted on the next business day; and (2) Representative inspections as authorized in Part II G 2 d shall not be allowed. Issued — 10/2022 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County STORM WATER INSPECTIONS FOR VSMP GENERAL PERMIT LAND DISTRIBUTING ACTIVITIES Page I PROJECT: MONITORING FOR THE WEEK BEGINNING: DATE AND TIME OF INSPECTION: RAINFALL: Date of Rain Amount Inches Initials EROSION AND SEDIMENT CONTROL FACILITIES INSPECTED: (Inspections shall be conducted according to Part IIF2 of the Permit. However, if the discharges of stormwater from construction activities are to surface waters identified as imparied, inspections shall be conducted according to Part IB4d.) Facility Identification Date and Time of Inspection Operating Properly (Y/N) Description of inspection observations OBSERVATION OF RUNOFF AT OUTFALLS: (Inspections shall be conducted according to Part IIF2 of the Permit. However, if the discharges of stormwater from construction activities are to surface waters identified as imparied, inspections shall be conducted according to Part IB4d.) By this signature, I certify that this report is accurate and complete to the best of my knowledge: Qualified Personnel By this signature, I certify that the contraction activity is in compliance with the SW PP and general permit. Qualified Personnel ceritication statement on page 3 shall be signed. By this signature, I certify that this report is accurate and complete to the best of my knowledge: Operator/Duly Authorized Representative By this signature, I certify that the contraction activity is in compliance with the SWPP and general permit. Operator/Duly Authorized Representative Stormwater Discharge Cattail Identification Date Clarity Floating Solids Suspended Solids Oil Sheen Otherobvious indicators of stormwater pollution (list and describe) Visible sediment leaving the site?(Y/N) If yes, describe actions taken to prevent future releases (may need to attach additional information) Describemeasurestakento clean up sediment outside of disturbed limits (may need to attach additional information) Clarity: Choose the number which best describes the clarity of the discharge where 1 is clear and 10 is very, cloudy Floating Solids: Choose the number which best describes the amount of floating solids in the discharge where 1 is no solids and 10 the surface us covered in floating solids Suspended Solids: Choose the number which best describes the amount of suspended solids in the discharge where 1 is no solids and 10 is extremely muddy. Oil Sheen: Is there an oil sheen in the stormwater discharge (Y or N)? STORM WATER INSPECTIONS FOR VSMP GENERAL PERMIT LAND DISTRIBUTING ACTIVITIES Page I PROJECT: MONITORING FOR THE WEEK BEGINNING: DATE AND TIME OF INSPECTION: RAINFALL: Date of Rain Amount Inches Initials EROSION AND SEDIMENT CONTROL FACILITIES INSPECTED: (Inspections shall be conducted according to Part IIF2 of the Permit. However, if the discharges of stormwater from construction activities are to surface waters identified as imparied, inspections shall be conducted according to Part IB4d.) Facility Identification Date and Time of Inspection Operating Properly (Y/N) Description of inspection observations OBSERVATION OF RUNOFF AT OUTFALLS: (Inspections shall be conducted according to Part IIF2 of the Permit. However, if the discharges of stormwater from construction activities are to surface waters identified as imparied, inspections shall be conducted according to Part IB4d.) By this signature, I certify that this report is accurate and complete to the best of my knowledge: Qualified Personnel By this signature, I certify that the contraction activity is in compliance with the SW PP and general permit. Qualified Personnel ceritication statement on page 3 shall be signed. By this signature, I certify that this report is accurate and complete to the best of my knowledge: Operator/Duly Authorized Representative By this signature, I certify that the contraction activity is in compliance with the SWPP and general permit. Operator/Duly Authorized Representative Stormwater Discharge Cattail Identification Date Clarity Floating Solids Suspended Solids Oil Sheen Otherobvious indicators of stormwater pollution (list and describe) Visible sediment leaving the site?(Y/N) If yes, describe actions taken to prevent future releases (may need to attach additional information) Describemeasurestakento clean up sediment outside of disturbed limits (may need to attach additional information) Clarity: Choose the number which best describes the clarity of the discharge where 1 is clear and 10 is very, cloudy Floating Solids: Choose the number which best describes the amount of floating solids in the discharge where 1 is no solids and 10 the surface us covered in floating solids Suspended Solids: Choose the number which best describes the amount of suspended solids in the discharge where 1 is no solids and 10 is extremely muddy. Oil Sheen: Is there an oil sheen in the stormwater discharge (Y or N)? STORM WATER INSPECTIONS FOR VSMP GENERAL PERMIT LAND DISTRIBUTING ACTIVITIES Page I PROJECT: MONITORING FOR THE WEEK BEGINNING: DATE AND TIME OF INSPECTION: RAINFALL: Date of Rain Amount Inches Initials EROSION AND SEDIMENT CONTROL FACILITIES INSPECTED: (Inspections shall be conducted according to Part IIF2 of the Permit. However, if the discharges of stormwater from construction activities are to surface waters identified as imparied, inspections shall be conducted according to Part IB4d.) Facility Identification Date and Time of Inspection Operating Properly (Y/N) Description of inspection observations OBSERVATION OF RUNOFF AT OUTFALLS: (Inspections shall be conducted according to Part IIF2 of the Permit. However, if the discharges of stormwater from construction activities are to surface waters identified as imparied, inspections shall be conducted according to Part IB4d.) By this signature, I certify that this report is accurate and complete to the best of my knowledge: Qualified Personnel By this signature, I certify that the contraction activity is in compliance with the SW PP and general permit. Qualified Personnel ceritication statement on page 3 shall be signed. By this signature, I certify that this report is accurate and complete to the best of my knowledge: Operator/Duly Authorized Representative By this signature, I certify that the contraction activity is in compliance with the SWPP and general permit. Operator/Duly Authorized Representative Stormwater Discharge Cattail Identification Date Clarity Floating Solids Suspended Solids Oil Sheen Otherobvious indicators of stormwater pollution (list and describe) Visible sediment leaving the site?(Y/N) If yes, describe actions taken to prevent future releases (may need to attach additional information) Describemeasurestakento clean up sediment outside of disturbed limits (may need to attach additional information) Clarity: Choose the number which best describes the clarity of the discharge where 1 is clear and 10 is very, cloudy Floating Solids: Choose the number which best describes the amount of floating solids in the discharge where 1 is no solids and 10 the surface us covered in floating solids Suspended Solids: Choose the number which best describes the amount of suspended solids in the discharge where 1 is no solids and 10 is extremely muddy. Oil Sheen: Is there an oil sheen in the stormwater discharge (Y or N)? Section 13. Approved Drawings/Plans (Provide approved Erosion & Sediment Control Plan, Stormwater Management Plan, and Pollution Prevention Plan.) Issued — 10/2022 Stonnwater Pollution Prevention Plan (SWPPP) Albemarle County VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY GENERAL VPDES PERMIT FOR DISCHARGES OF STORMWATER FROM CONSTRUCTION ACTIVITIES (VAR10) NOTICE OF TERMINATION 2019 Permit Coverage Number Section 1. Operator/Permittee Information. The person or entity that has active permit coverage approval and operational control over construction activities to ensure compliance with the general permit. A person with signatory authority for this operator must sign the certification in Section VII (per Part III. K. of the VAR10 Permit). Construction Activity Operator Name: Contact Person: Address: City, State, Zip Code: Phone Number: Primary Email: CC Email: Section II. Construction Activity Location Information. Project site information. Construction Activity Name: Address: City and/or County and Zip Code: Latitude and Longitude (6-digit, decimal degrees format): Section III. Reason for Terminating Coverage under the General Permit. The operator shall submit a Notice of Termination within 30 days after meeting one or more of the following conditions (select one or more): ❑ 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 for permanent control measures 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, the operator has provided written notification to the homeowner about the importance of final stabilization and incorporating a copy of the notification and signed certification statement into the SWPPP, and the residence has been transferred to the homeowner. Rev 04/2019 PAGE 1 1 6 CONSTRUCTION GENERAL PERMIT (VAR10) NOTICE OF TERMINATION 2019 Section IV. Participation in a Regional Stormwater Management Plan. If your site discharges to a regional stormwater management facility, provide information related to the regional stormwater management plan. Attach a separate list if discharging to multiple regional facilities. Regional Stormwater Management Facility Type: Address: City and/or County and Zip Code: Latitude and Longitude (6-digit, decimal degrees format): Total Acres Treated by Regional Facility (report to one -hundredth of an acre): Impervious Acres Treated by Regional Facility (report to one -hundredth of an acre): Section V. Perpetual Nutrient Credits. If your site is utilizing nutrient credits, provide information related to the perpetual nutrient credits that were acquired in accordance with § 62.1-44.15:35 of the Code of Virginia. Attach a separate list if needed. Nonpoint Nutrient Credit Generating Entity (Bank Name): Perpetual Nutrient Credits Acquired (pounds/acres/year): Include the affidavit of sale for all nutrient credits acquired. Is the affidavit of sale of nutrient credits attached? OYES ONO Section VI. Permanent Control Measures. If applicable, list the post -development stormwater management facilities or best management practices (BMPs) that were constructed and installed as part of this activity to comply with the stormwater management technical criteria (structural and nonstructural, on -site and off -site). Attach a separate list if needed. If you have permanent control measures, the following items are required to be included with this form in order to complete your Notice of Termination submittal: ❑ A. Engineer's Certification Statement ❑ B. As -built plans (construction record drawings) —digital ❑ C. As -built plans (construction record drawings) —full-sized, paper ❑D. Stormwater Management Plans —digital ❑ E. BMP Maintenance Agreement — notarized original, for public and private projects under DEIXs VSMP Authority Stormwater Management Facility Tyoes lolease choose from the following bmo woes): Bioretention 1 Bioretention 2 Bioretention basin Bioretention filter Constructed Wetland 1 Constructed Wetland 2 Constructed wetlands Dry Swale 1 Dry Swale 2 Extended detention (2 x WQ Vol) Extended Detention Pond 1 Extended Detention Pond 2 Extended detention -enhanced Filtering Practice 1 Filtering Practice 2 Grass Channel Grassed swale Infiltration (1 x WQ Vol) Infiltration (2 x WQ Vol) Infiltration 1 Infiltration 2 Other 1113 (manufactured treatment device, etc.) Other IIC (manufactured treatment device, etc.) Permeable Pavement 1 Permeable Pavement 2 Rainwater Harvesting Retention basin I (3 x WQ Vol) Retention basin II (4 x WQ Vol) Retention basin III (4x WQ Vol with aquatic bench) Sand filter Sheetflow to Vegetated Filter or Conserved Open Space 2 Soil Amendments Urban Bioretention Vegetated filter strip Vegetated Roof 1 Vegetated Roof 2 Wet Pond 1 Wet Pond 2 Wet Swale 1 Wet Swale 2 Rev 04/2019 PAGE 2 16 CONSTRUCTION GENERAL PERMIT (VAR10) NOTICE OF TERMINATION 2019 Stormwater Management Facility #1 BMP Type: Date BMP Became Functional: Address (if available): City and/or County and Zip Code: Latitude and Longitude (6-digit, decimal degrees format): Receiving Water(s) (outfall discharge): Total Acres Treated (report to one -hundredth of an acre): Impervious Acres Treated (report to one -hundredth of an acre): Stormwater Management Facility #2 BMP Type: Date BMP Became Functional: Address (if available): City and/or County and Zip Code: Latitude and Longitude (6-digit, decimal degrees format): Receiving Water(s) (outfall discharge): Total Acres Treated (report to one -hundredth of an acre): Impervious Acres Treated (report to one -hundredth of an acre): Stormwater Management Facility #3 BMP Type: Date BMP Became Functional: Address (if available): City and/or County and Zip Code: Latitude and Longitude (6-digit, decimal degrees format): Receiving Water(s) (outfall discharge): Total Acres Treated (report to one -hundredth of an acre): Impervious Acres Treated (report to one -hundredth of an acre): Rev 04/2019 PAGE 3 16 CONSTRUCTION GENERAL PERMIT (VAR10) NOTICE OF TERMINATION 2019 Section VII. Certification. This Certification must be signed by a person representing the operator identified in Section I. and meeting the requirements of 9VAC25-880-70 Part III K. Certification: "I certify under penalty of law that I have read and understand this Notice of Termination 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." Printed Name: Signature (signed in ink): Date: Section Vill. Submittal Instructions. Please submit this form to the Virginia Stormwater Management Program (VSMP) Authority that has jurisdiction for your construction activity. If the locality is the VSMP Authority, please submit your form directly to the locality; do NOT send this form to DEQ. A list of local VSMP Authorities is available here: VSMP Authorities. If DEQ is the VSMP Authority, please send to: Department of Environmental Quality Office of Stormwater Management Suite 1400 PO Box 1105 Richmond VA 23218 constructionsp@dea.vir¢in ia.¢ov If the locality is the VSMP Authority, please send to: The Local VSMP Authority (insert address below) Permit terminations may be delayed if there are outstanding annual permit maintenance fee balances due. Rev 04/2019 PAGE 4 1 6 CONSTRUCTION GENERAL PERMIT (VAR10) NOTICE OF TERMINATION 2019 INSTRUCTIONS PLEASE DO NOT PRINT OR SUBMIT A complete and accurate Notice of Termination is required for terminating coverage under the General VPDES Permit for Discharges of Stormwater from Construction Activities. Termination shall become effective upon notification from the department that the provisions of termination have been met or 60 days after submittal of a complete and accurate Notice of Termination, whichever occurs first. Authorization to discharge terminates at midnight on the date that the Notice of Termination is submitted unless otherwise notified by the VSMP authority or the department. Permit Coverage Number. Include your existing, active permit coverage number. Example: VAR10####. Section I. Operator/Permittee Information. The construction activity operator (permittee). The permittee with active permit coverage and that has operational control over the construction activities to ensure compliance with the general permit. For companies, use the complete, active, legal entity name as registered with a state corporation commission. Entities that are considered operators commonly consist of the property owner, developer of a project (the party with control of project plans and specifications), or general contractor (the party with day-to-day operational control of the activities at the project site that are necessary to ensure compliance with the general permit). If an individual person is named as the operator, that person (or a representative of) must sign the certification in Section VII. Section II. Construction Activity Location Information. Project site information. Complete this section with the same information as listed on the current registration statement. A list of active permits and corresponding location information is available on our website. Section Ill. Reason for Terminating Coverage under the General Permit. The operator shall submit the Notice of Termination no later than 30 days after one or more of the termination conditions being met. Authorization to discharge terminates at midnight on the date that the Notice of Termination is submitted to the VSMP Authority, unless otherwise notified by the VSMP authority or the Department. Termination of authorizations to discharge for the conditions shall be effective upon notification from the Department that the provisions of termination have been met or 60 days after submittal of the Notice of Terminations, whichever occurs first. The operator of the construction activity shall submit a Notice of Termination within 30 days after meeting one or more of the following conditions (you may select one or more of these conditions): • [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 has operational control. When applicable, long-term responsibility and maintenance requirements for permanent control measures shall be recorded in the local land records prior to the submission of a complete and accurate 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 individual lots in residential construction only, temporary soil final stabilization as defined in 9VAC25-880-1, has been completed and the residence has been transferred to the homeowner. Section IV. Participation in a Regional Stormwater Management Plan. Where applicable, include information for each regional stormwater management facility to which this site contributes. If your site is contributing to more than one regional facility, please include the information for each facility in a separate list. The following information shall be included for each regional stormwater management facility installed: • the type stormwater management facility (see the list of facility types on page 2 of the Notice of Termination); • the physical location of the facility, including city or county, and latitude and longitude in decimal degrees; • the receiving water to which the regional facility is discharging; and • the number of total and impervious acres treated by the regional stormwater management plan to the nearest one -hundredth of an acre. The total of the impervious acreage may equal but not exceed the total acreage. Section V. Perpetual Nutrient Credits. If your site is utilizing nutrient credits, provide information related to all perpetual nutrient credits acquired in accordance with § 62.1-44.15:35 of the Code of Virginia. Attach a separate list if needed. Attach the affidavit(s) of sale for the purchase of all nutrient credits acquired for this activity. Rev 04/2019 PAGE 5 1 6 CONSTRUCTION GENERAL PERMIT (VAR10) NOTICE OF TERMINATION 2019 INSTRUCTIONS PLEASE DO NOT PRINT OR SUBMIT Section VI. Permanent Control Measures. If applicable, list all post -development stormwater management facilities or best management practices (BMPs) that were constructed and installed as part of this activity to comply with the stormwater management technical criteria (structural and nonstructural, on -site and off -site). Choose the type from the list provided in the Notice of Termination form Section VI. If you have multiple BMPs, attach a separate list if needed. The following information shall be included for each permanent control measure installed: • the type of permanent control measure receiving the discharge (choose from list provided); • the date that it became functional as a permanent control measure (MM/DD/YYYY); • the location of the BMP, including city or county, and latitude and longitude in decimal degrees; • the receiving water(s) to which the permanent control measure discharges; and • the number of total and impervious acres treated by the permanent control measures to the nearest one -hundredth of an acre. The total of the impervious acreage may equal but not exceed the total acreage. The following items are required to be submitted with the Notice of Termination if you have permanent control measures: • Engineer's Certification Statement. Signed by a professional registered in the Commonwealth of Virginia, certifying that the stormwater management facilities were constructed in accordance with the approved plan. • Construction record drawing(s) (as -built plan) in a format as specified by the VSMP authority for permanent stormwater management facilities in accordance with 9VAC25-870-55 D appropriately sealed and signed. One digital and one full-sized papercopy. • Stormwater management plans (digital) • BMP Maintenance Agreement. Submit an original, signed and notarized BMP Maintenance Agreement for all public and private permits where DEQ is the VSMP Authority. Termination is not final until you submit the local court record of receipt to DEQ showing that the signed Stormwater Management Maintenance Agreement was recorded with the land deed. Section VII. Certification. This Certification must be signed by a person representing the operator identified in Section I. and meeting the requirements of 9VAC25-880-70. Part III. K. Section Vlll. Submittal Instructions. Submit this form to the VSMP Authority that has jurisdiction for your construction activity. The VSMP Authority may be either DEQ or your locality depending on the location and type of project. If your project is under the jurisdiction of a Local VSMP Authority, please contact the locality for additional submittal instructions. A blank area is provided for the Local VSMP Authority to include their mailing address. Who is the VSMP Authority for my proiect? DEQ or the locality? • DEQ: DEQ is the VSMP Authority and administers permit coverage for land -disturbing activities that are: ➢ within a locality that is not a VSMP Authority; ➢ owned by the State or Federal government; or ➢ utilizing approved Annual Standards and Specifications. • The Locality: The local government (locality) is the VSMP Authority and administers permit coverage for all other projects not covered by DEQ as listed above. For these projects, please submit permit forms directly to the Local VSMP Authority. A list of Local VSMP Authorities is available on DEQ's website here: Local VSMP Authority List. DEQ'S CONSTRUCTION GENERAL PERMIT WEBSITE http://www.deg.virginia.gov/Programs/Water/StormwaterManagement/VSMPPermits/ConstructionGenera]Perm it.aspx Rev 04/2019 PAGE 6 16 CROZET ELEMENTARY RENOVATION AND S] SITE DATA: TAX MAP PARCEL: 05600-00-00-064EO COUNTY OF ALBEMARLE SCHOOL BOARD DB. 1044, PG. 498 DB. 1098, PG. 703 PARCEL AREA: 21.16 AC LIMITS OF DISTURBANCE: 7.65 AC IMPERVIOUS AREA: 2.79 AC ZONING: RURAL AREAS (RA) STEEP SLOPES (MANAGED) OVERLAY MAGISTERIAL DISTRICT: WHITE HALL SOURCE OF BOUNDARY AND TOPOGRAPHY: TIMMONS GROUP 28 IMPERIAL DRIVE STAUNTON, VA 24401 TELEPHONE: 540-885-0920 CONTACT:JOE MEDLEY JOE. MEDLEY@Tl MMONS.COM SURVEY CONDUCTED: MARCH 2O20 DATUM: HORIZONTAL: NAD83(NA2011) VIRGINIA STATE GRID SOUTH VERTICAL: NAVD88 VIA GPS RTK OBSERVATIONS REQUIRED BUILDING SETBACKS: FRONT 75 FT MINIMUM (EXISTING PUBLIC ROAD) FRONT 25 FT MINIMUM (INTERNAL PUBLIC/PRIVATE ROAD) SIDE 25 FT MINIMUM REAR 35 FT MINIMUM SCHOOL ADDITION, IMPROVEMENTS WPO/VSMP AMENDMENT #2 SUBMISSION - WP0202000039 MAXIMUM BUILDING HEIGHT: 35 FT PROPOSED BUILDING HEIGHT: KITCHEN ADDITION 16 FT CLASSROOM + MOVEMENT ADDITION 28 FT (AVERAGE) LOWER LEVEL VESTIBULE 10 FT PROPOSED BUILDING SQUARE FOOTAGE: KITCHEN ADDITION 2,180 GSF (1 STORY) CLASSROOM + MOVEMENT ADDITION 31,753 GSF (3 STORIES) LOWER LEVEL VESTIBULE 982 GSF (1 STORY) TOTAL 34,915 GSF EXISTING USE: ELEMENTARY SCHOOL PROPOSED USE: ELEMENTARY SCHOOL +34,915 GSF BUILDING ADDITION ±6,175 SF BASKETBALL COURT ADDITION +33,350 SF PLAYGROUND RENOVATION ±6,250 SF COURTYARD ADDITION WETLAND IMPACTS: NO WETLANDS ARE IMPACTED AS A PART OF THIS PROJECT WATER SUPPLY: ACSA PUBLIC WATER SANITARY SUPPLY: ACSA PUBLIC SEWER DRAINAGE DISTRICT: RIVANNA NOTES: 1. THERE ARE MANAGED STEEP SLOPES WITHIN THE PROJECT LIMITS. 2. THERE ARE NO CONSTRUCTION ACTIVITIES PROPOSED WITHIN THE 100-YR FLOODPLAIN. 3. THE SITE IS LOCATED IN A WATER SUPPLY PROTECTION DISTRICT. 4. A WPO STREAM BUFFER IS LOCATED ON THE SUBJECT PROPERTY AND WILL BE MANAGED IN ACCORDANCE WITH THE ALBEMARLE COUNTY WATER PROTECTION ORDINANCE. PARKING REQUIRED: THE NUMBER OF REQUIRED SPACES SHALL BE DETERMINED BY ALBEMARLE COUNTY PUBLIC SCHOOLS, DOCUMENTED IN A PARKING STUDY, AND SUBMITTED TO THE ZONING ADMINISTRATOR FOR APPROVAL EXISTING PARKING: 86 SPACES PROPOSED PARKING: 130 STANDARD SPACES 6 ADA SPACES 136 TOTAL EVERYDAY USE SPACES 12 BUS SPACES 41 SPECIAL EVENT SPACES 189 TOTAL SPACES SPECIAL FLOOD HAZARD AREA INFORMATION: SPECIAL FLOOD HAZARD AREA (FLOODPLAIN) YES [ I NO [ X I TRIP GENERATION LAND USE: ELEMENTARY SCHOOL ITE CODE: 520 AMOUNT: 680 UNITS: NUMBER OF STUDENTS Trio Generation for Crozet Elementary School LAND USE ITE CODE AMOUNT UNITS WEEKDAY AM PEAK HOUR PM PEAK HOUR ADT IN OUT TOTAL IN OUT TOTAL Elementary School 520 680 # of Students 1285 239 203 442 104 127 231 UTILITY DEMANDS WATER FLOW (AVERAGE DAILY DEMAND) AVERAGE FLOW RATES (FROM TABLE A 12VAC5-590-690) ELEMENTARY SCHOOL = 10 GPD/PERSON 10 GPD/PERSON x 770 PERSONS (90 STAFF + 680 STUDENTS) TOTAL = 7,700 GPD AVERAGE HOURLY DEMAND = 7,700 GPD / 24 HOURS = 320.83 GPH MAXIMUM HOURLY DEMAND = 320.83 GPH X 300% = 962.5 GPH PEAK HOURLY DEMAND = 962.5 X 150% = 1,443.75 GPH 1,443.75 GPH / 60 MIN = 24 GPM TOTAL FIXTURE COUNTS WATER CLOSETS = 44 LAVATORIES = 38 DRINKING FOUNTAINS = 12 SERVICE SINKS = 7 SEWER FLOW (AVERAGE DAILY FLOW) ESTIMATED TOTAL = 10 GPD/PERSON x 770 PERSONS = 7,700 GPD COUNTY OF ALBEMARLE, VIRGINIA WHITE HALL DISTRICT 8/24/2022 PROJECT LOCATION .a 1" �4 CrOzet ,ree.00-r j p Appalachian Mountains h n rT �f. 40 ,,ve Rmwnwillp %Oco WPO AMENDMENT #2 DESCRIPTION • INCREASE IN DISTURBED AREA TO KEEP SURPLUS DIRT ON SITE AND TURN IT INTO A U12 SOCCER FIELD IN THE BACK OF THE PROPERTY AT THE END OF THE PROJECT (SEE SHEET C3.11 & C4.2) • UPDATED VRRM FOR ADDITIONAL DISTURBANCE. NO ADDITIONAL TREATMENT NEEDED AS WE WERE OVER THE MINIMUM REQUIREMENT PREVIOUSLY (SEE SHEETS C6.0 & C6.2) • UPDATED NOTE TO RESERVE THE REMAINING 0.01 LB/YR SURPLUS FOR ANOTHER SCHOOL PROJECT THAT QUALIFIES (SEE SHEET C6.3) • UPDATED SWPPP ACCORDINGLY • UPDATED CALC BOOK ACCORDINGLY VICINITY MAP SCALE: 1" = 2000' OWNER: ALBEMARLE COUNTY SCHOOL BOARD 401 MCINTIRE RD CHARLOTTESVILLE, VA 22902 CONTACT: MATT WERTMAN TELEPHONE: (434) 975-9340 FAX: (434) 975-9341 ENGINEER OF RECORD: TIMMONS GROUP 608 PRESTON AVE. CHARLOTTESVILLE, VA 22903 CONTACT: BRYAN CICHOCKI, P.E. TELEPHONE: 434-327-5380 Sheet List Table Sheet Number Sheet Title C0.0 COVER C3.11 EROSION & SEDIMENT CONTROL PLAN (GRASS FIELD) C4.1 LAYOUT & UTILITY PLAN C4.2 LAYOUT & GRADING PLAN (GRASS FIELD) C6.0 STORMWATER MANAGEMENT PLAN I C6.2 STORMWATER MANAGEMENT QUALITY C6.3 STORMWATER MANAGEMENT QUALITY SIGNATURE PANEL: DEPARTMENT OF COMMUNITY DEVELOPMENT PLANNING & ZONING ENGINEERING INSPECTIONS DEPARTMENT OF FIRE AND RESCUE ALBEMARLE COUNTY SERVICE AUTHORITY VIRGINIA DEPARTMENT OF TRANSPORTATION TOTAL SHEETS = 7 APPROVAL DATE V M I) 0 VIA DO Architects vmdo.com 434.296.5684 200 E Market Street 2000 Pennsylvania Ave NW Ste 7000 Charlottesville, VA 22902 Washington, DC 20006 • 0,�5l� s TIMMONS GROUP YOUR VISION ACHIEVED THROUGH OURS. bemarle County Public Schools ALBEMARLE COUNTY PUBLIC SCHOOLS CROZET ELEMENTARY SCHOOL ADDITION, RENOVATION AND SITE IMPROVEMENTS 1407 Crozet Avenue, Crozet, VA 22932 VDOE Project Number 002-34-00-101 VMDO Project Number 1284 11fydII Uc. No. 53741 Checked By B. CICHOCKI Designed By K. ROESER Drawn By K. ROESER APPROVED by the Albemarle County Community Development Department Date 10/21/2022 File WP0202000039 Amendment #2 ISSUES AND REVISIONS NO. SUBMITTAL DATE 1 FINAL SITE PLAN & WPO PLAN SUBMISSION 10.AUG.2020 2 FINAL SITE PLAN RESUBMISSION #1 25.NOV.2020 3 WPO PLAN RESUBMISSION #1 02.DEC.2020 4 FINAL SITE PLAN & WPO PLAN SUBMISSION 05.FEB.2021 5 SIGNATURE SET 18.MAR.2021 6 WPO AMENDMENT #1 28.MAY.2021 7 WPO AMENDMENT #2 24.AUGUST.2022 8 MINOR SITE PLAN AMENDMENT #1 24.AUGUST.2022 COVER Como ` VI GI A FLIB lC 'E lC COMPANY (TRACT 2) Oq. 20E- 1927 13 OHSOHP OHR \ OHP ��—OHP OHP OHP am Ralik \ \ \ 4*4 -------� \` ___________ _-_---- \ \ \ \ SSF ----------------`°__ \-- CSS \\ I 000 we -- \— �,_ \ \ ` \ o'D000 ' en \ CO I, co v COv I o y `(0 I. / —OHP OHP F-1927 /1-56 \ \ _ _\ \ _ _ _ OHP OHP uo 1 I ' - - - ------ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - / -I-I / I ' I I I \ I\ LIMITS OF DISTURBANCE ` SCOREBOARD 7.65 AC FOUL O POLE-7 \ \\\ \V \\ \V v \ I -------- NET P T \ \ \\ \ r— \ I D3 1 \ I \ I LCHAIN-LINK FENCE ZZ c� w I ���- I 0-9 SSF \ \ -----/ � 1 QEC 1 TIP v I I 68s m I 'DEC � DEC \ \ \\ I; \ "DEC \ q 1 \ 6" DEC I I I I \ ' 12" DE BENCH 1 i 6 ¢Ep Now Now _ I s s yOWN \ i 1 \ E8 OF/N F-192711-52 SCALE V=20' 0 20' 40' (PART OF) TMP 56-64E COUNTY SCHOOL BOARD OF ALBEMARLE COUNTY, VIRGINIA DB. 1044, PG. 498 DB. 1098, PG. 703 ZONED: RA (RURAL AREAS) I I I I I I I I I \ \ ROOFOVERHANG X"- 1 \; DUGOUT \ CHAIN -LINK €ENCE_ J/ El I I I 1 I I 1 (3) TENNIS COURTS (36'x 187 LU / // a / h \ i i /� I I GRAtLANql I //Z/,// X 1 1 I �' I \I 1 I , 1 rr II / I /// / BLOCKRL}TAINING I I / I / / / WALL 1.0' aWJ 11 I I I I 1 1 I�I 1 \ ROOF OVERHANG DUGOUT 1 \ I �\ I � I V M 1) 0 VM DO Architects vmdo.com 434.296.5684 200 E Market Street 2000 Pennsylvania Ave NW Ste 7000 Charlottesville, VA 22902 Washington, DC 20006 i TIMMONS GROUP YOUR VISION ACHIEVED THROUGH OURS. bemarle County Public Schools ALBEMARLE COUNTY PUBLIC SCHOOLS CROZET ELEMENTARY SCHOOL ADDITION, RENOVATION AND SITE IMPROVEMENTS 1407 Crozet Avenue, Crozet, VA 22932 VDOE Project Number 002-34-00-101 VMDO Project Number 1284 v 11fydII Uc. No. 53741 6//z`/ z , Checked By Designed By Drawn By B. CICHOCKI K. ROESER K. ROESER ISSUES AND REVISIONS NO. SUBMITTAL DATE 1 FINAL SITE PLAN & WPO PLAN SUBMISSION 10.AUG.2020 2 FINAL SITE PLAN RESUBMISSION #1 25.NOV.2020 3 WPO PLAN RESUBMISSION #1 02.DEC.2020 4 FINAL SITE PLAN & WPO PLAN SUBMISSION 05.FEB.2021 5 SIGNATURE SET 18.MAR.2021 6 WPO AMENDMENT #1 28.MAY.2021 7 WPO AMENDMENT #2 24.AUGUST.2022 8 MINOR SITE PLAN AMENDMENT #1 24.AUGUST.2022 EROSION & SEDIMENT CONTROL PLAN (GRASS FIELD) C111 I I I i I � I CONNECT TO EXISTING I �G:VELLANE� IN I / II I I I I I I GRAVELLANE I (3) TENNIS COURTS (36'x 18i I : A 0 GOAL ADD -ALTERNATE 5. SEE SHEET C9.2 1 1 65' ... . • . BASKETBALL COURT .'..'... STRIPING • • • (2) SALVAGED BASKETBALL GOALS 8 FT RIM HEIGHT ...'... ....... ...' ......... �2) .. P SKETBP LL GOAL&. .. : EXISTING SOCCER FIELD I � Wp I � � APPR I . LOCATION I GEOTHERMAL WELL FIE SEE EP PLANS F 1 ADDITIONAL INFORMATI IIII�■ Oro 0iiiii PAINTED YELLOW \ FIRE LANE CURB CG-3 _ 011 R1 PARKING SPACES TO BE STEEP SL PE5 USED DURING SPECIAL \(MANAG EVENTS ONLY. CAR ACCESS TO BE 4" WIDE WHITE PROHIBITED FROM BUS STRIPE (TYP.) ENTRANCE 4" WID YELLO STRIPE (TYP.)\ CG-7 (5' tNSITION CG-6 ON EITHER SIDE) 91 1 \ I-] STEEP SLOPES — (CRITICAL SLOPES) — — ill — —51 STRIPE (TYP.j 0 1 31 11.7 _— 91 — X C� O� 4" WIDE YEL OW STRIPE P.) I� WHITE STRIPE (TYP.) �'- GEOTHER AL LL SUPP AND 10 RETU N SERVICE INESI (11) 4" GS/GR (GE THERMAL) APES (48" MINIMUM COVER).rSEE SHE E 800.1 \ D' 2 SEE VAULT DETAIL ON SHEET 802.1 9' 9 uG1— 18 ---� II � ' UGP/R4 NOTES: 1. CONTRACTOR SHALL PROVIDE A TEMPORARY ABOVIfGROUND OIL FUEL TANK WITH CONTAINMENT TO SERVICE THE SCHOOL DURING THE WINTER MONTH WHILE CONSTRUCTION IS ONGOING. CONTRACTO MAINTAIN ACCESS TO TANK SO THAT ACPS CAN KEE IT FILLED; THERE SHALL BE NO GAP IN AVAILABILI FUEL OIL WHILE SCHOOL IS IN SESSIONS DURING THE TRANSITION TO THE TEMPORARY TANK. REFER T ARCH/MEP DRAWINGS FOR FURTHER DETAILS AND TILITY ROUTING. 2. A KNOX BOX SHALL BE REQUIRED FOR THE PROPOSD BUILDING ADDITIONS. CONTRACTOR SHALL COORDINATE WITH THE FIRE MARSHAL'S OFFICE FO FINAL LOCATION. 3. EACH OUTDOOR LUMINARE EQUIPPED WITH A LAMP 1HAT EMITS 3,000 OR MORE INITIAL LUMENS SHALL( FULL CUTOFF LUMINARE AND SHALL BE ARRANGED OR SHIELDED TO REFLECT LIGHT AWAY FROM AD RESIDENTIAL DISTRICTS. SEE SITE PHOTOMETRIC SHEETS FOR ADDITIONAL INFORMATION. 4. BIORETENTION BASINS MAY NOT BE CONSTRUCTED UNTIL ALL CONTRIBUTING DRAINAGE AREAS AR STABILIZED. BIORETENTION FACILITIES MUST BE CONSTRUCTED IN ACCORDANCE WITH WP0202000 iTO OF 0 PLAN. LEGEND: CONCRETE SIDEWALK GRAVEL ROAD HEAVY DUTY CONCRETE REINFORCED TURF HEAVY DUTY ASPHALT BIORETENTION PLANTINGS El LIGHT DUTY ASPHALT MULCH PLAY AREA ld ElASPHALT TO BE MILLED & OVERLAIDEll STONE DUST ElEXPOSED AGGREGATE F7 GRAVEL FILTER STRIP 88 GVN 1 / SCALE V=2U / 1 / 0 20' 40' 1 � � 1 � 1 / 1 � � 1 � 1 MATCHLINE - SEE SHEET C4.2 INV 1N=663.21'8'PVC (W) 1 INV. OUT=662.78' 8"PVC MHS TOP=670.62' `ram INV. 1N=663.56'8"PVC INV. OUT=663.09'8"PVC z 1 TMP 56-64E \ COUNTY SCHOOL BOARD OF 1 \ ALBEMARLE COUNTY, VIRGINIA DB. 1044, PG. 498 DB. 1098, PG. 703 \ 1 \ VDOT STD. HANDRAIL ZONED: RA (RURAL AREAS) 1 1 \ OUTFACE #3 (VRRM DA "C") BIORETENTION (4) 6" CONCRETE RISERS 1 \ FACILITY 3A WITH HANDRAILS 1 c RELOCATED MHS 1 1 1 N IRRIGATION TOP=67762' GOAL I INV UT.82'8"PVC ELECTRICAL PANEL \ 1 • iV OUT=6----________ IN70.54'8"PVC \ • i i � / GRAVEL FLOW SPREADER 1 \ ------------- / / \ (SEE DETAIL ON SHEET C1.2) \ 1 \ JG APPROX. 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WALL 3' (W) DOOR " 3' (W) DOOR 3' (") _ s� SANITARY FFE=693.45' Q \ ° CANOPY COLUMN (THFFERESHOLD)3.41' (THRESHOLD) (TYP) O�G 1.0'DTYP. /THRESHOLD) COLUMN \ SEWER \ MHS - Ss.96' 6 I 1. 010 TYE.. \ m\ \ \ \ \ CONNECTION m TOP=676.13' / I I '. 3' (W) DOOR / INV. 1N=673.74' PVC -CAT 3'(W) I \ \ INV. 1N=66585'8"PVC 10' / INV 1N=673.44' 8"PVC (NW) DOOR I L b� \ \ INV. OUT=665.63' 8" PVC / \ INV.OUT=673.20'8"PVC ADJUST CONE SECTION 4 \ OF MANHOLE TOP TO 00 \ 12"DEC \ 76 \ MOVE LID INTO THE y r PROPOSED ADJUST CONE SECT40N CONCRETE SIDEWALK `� `'' ENCLOSED \ \ OF MANHOLE TOP TO '0 VESTIBULE MOVE LID OUTSIDE OF JDC 3'(w)DOOR ® ® GATE 5, 3' (W) DOOR mow' CONC. I a THE PAVED AREA FFE=693.45' 3'(W)D OR \ CO ° . FFE=693.46' CONC. 6" DEC 6(THRESHOLD) FFE=681.36' ECH. \ \ C .' 0113112<,a (THRESHOLD) (ESMT) V AA 1) 0 VM DO Architects vmdo.com 434.296.5684 200 E Market Street 2000 Pennsylvania Ave NW Ste 7000 Charlottesville, VA 22902 Washington, DC 20006 �00*00 TIMMONS GROUP YOUR VISION ACHIEVED THROUGH OURS. 0 bemarle County Public Schools ALBEMARLE COUNTY PUBLIC SCHOOLS CROZET ELEMENTARY SCHOOL ADDITION, RENOVATION AND SITE IMPROVEMENTS 1407 Crozet Avenue, Crozet, VA 22932 VDOE Project Number 002-34-00-101 VMDO Project Number 1284 yan D. Cichocki lac. No. 53741 6/*h2 Checked By Designed By Drawn By B. CICHOCKI K. ROESER K. ROESER ISSUES AND REVISIONS NO. SUBMITTAL DATE 1 FINAL SITE PLAN & WPO PLAN SUBMISSION 10.AUG.2020 2 FINAL SITE PLAN RESUBMISSION #1 25.NOV.2020 3 WPO PLAN RESUBMISSION #1 02.DEC.2020 4 FINAL SITE PLAN & WPO PLAN SUBMISSION 05.FEB.2021 5 SIGNATURE SET 18.MAR.2021 6 WPO AMENDMENT #1 28.MAY.2021 7 WPOAMENDMENT#2 24.AUGUST.2022 8 MINOR SITE PLAN AMENDMENT #1 24.AUGUST.2022 LAYOUT & UTILITY PLAN C4n 1 \ \ \ \ \ \\ \ \ \ \ OHPSOHP OHP\ \ OH(-' \ \ \ \ \ \ \ T \ \ \ \ \ \ \ \ \ \ —�------\ \ ------\ ---- 1------- - —\ \ I — \ 679.32' 1 681.38' I \ I � I R30' \ I \ I I \ U YOUTH SOCCER FIELD \ I \ I \ \ \ I 682 c 1 300' A I \\ \ I o' \ I \ sea I I 1 I I I68A I 132' I \ I I \ I I � 1 I 54' 60' I I >\ IREMOVE GRAVEL II PATH AS NEEDED 22' POWER EASEMENT FOR VIRGINA PUBLIC SERVICE COMPANY (TRACT 2) — \ \tOHP \ 2. F-1927 BHP t OHP OHP — HP O,;,p — \ \ 3. 4. 5. --------------�------------ — � \ I RIPRAP DISSIRATOR \ I I � SCOREBOARD FOUL POLE I ~� I \ I \ \ I � I DRAINAGE DITCH \ NET, , \ \ (TYP `\ \——— — ----- \ I D3 \ I \ I I I / LCHAIN-LINK FENCE I Ui W / UQ / \ I I i� I— SHED I I I I I I. \ o ROOF I \ rr QEC OVERHANG q DUGOUT SCALE 1"=20' 0 20' 40' (PART OF) TMP 56-64E COUNTY SCHOOL BOARD OF ALBEMARLE COUNTY, VIRGINIA DB. 1044, PG, 498 DB. 1098, PG. 703 ZONED: RA (RURAL AREAS) \ I I I I I I III I I I I \ X� ROOF OVERHANG DUGOUT X —X� \ I 18" DEC \ CHAIN -LINK 18�DEC I 1 €ENCE 12"DDEC I 18"DEC I q3 6"DEC 683.82' BENCH I J 12"DEC 685.8 q \ \ \ I I J 6" bEr 1 I 1 l — \` 26 DU I I 24 165' ' / / rr 1vv 11 I I I Il / 1 // IIIIII' / / //' All v ,MA'rCHLINE -SEE SHEET C4.1 m777 �,// It i \1 i 1 i 1 (3) TENNIS COURTS (36'x 187LU LL I I I\ V 1 GRA�L LANEI I m I x IUp CONNECT TO EXISTING I GRAVEL LANE I \ I I::I: I /' r i BLOCKRATAINING \\ 1 II I '1 I I I 1 I I ( I watL t.o'fiw) V M 1) 0 VM DO Architects vmdo.com 434.296.5684 200 E Market Street 2000 Pennsylvania Ave NW Ste 7000 Charlottesville, VA 22902 Washington, DC 20006 TIMMONS GROUP YOUR VISION ACHIEVED THROUGH OURS. bemarle County Public Schools ALBEMARLE COUNTY PUBLIC SCHOOLS CROZET ELEMENTARY SCHOOL ADDITION, RENOVATION AND SITE IMPROVEMENTS 1407 Crozet Avenue, Crozet, VA 22932 VDOE Project Number 002-34-00-101 VMDO Project Number 1284 v 11fy8II Uc. No. 53741 6/zoz , Checked By Designed By Drawn By B. CICHOCKI K. ROESER K. ROESER ISSUES AND REVISIONS NO. SUBMITTAL DATE 1 FINAL SITE PLAN & WPO PLAN SUBMISSION 10.AUG.2020 2 FINAL SITE PLAN RESUBMISSION #1 25.NOV.2020 3 WPO PLAN RESUBMISSION #1 02.DEC.2020 4 FINAL SITE PLAN & WPO PLAN SUBMISSION 05.FEB.2021 5 SIGNATURE SET 18.MAR.2021 6 WPO AMENDMENT #1 28.MAY.2021 7 WPO AMENDMENT #2 24.AUGUST.2022 8 MINOR SITE PLAN AMENDMENT #1 24.AUGUST.2022 LAYOUT & GRADING PLAN (GRASS FIELD) C4m2 \ I\ \ / \ / \ \ / \ \ \ \\ \ < / \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ' / I \ \ \ \ \ \ \ \ \ \ - 7 \ \ .,_ T s &„rr.'-r=:Okjr - - - £8 \ \ no ,�\ / , / / / / / l 1 , l l l / - - / \ \\ \ < / \ \ \ \ \ \ \ \ \ \ C / / I \ \ \ \ \ \ \ \ \ * \ - 7- £8 \ \ \ \ \ \ \ \ \ . ^ T - - - - - / l I , l l / l \ \ I I \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ IIII \ \ \ \� \F \\ \ \ \ \ \ \ \-----�-a- _-�- 1 \ \ \ \ \\ \ \ \ \ \ \ \ - --" - --\--- ` \ \ \ \ \ \ \ \ \ }\1------------------------------------------ - - / 1 Tom- _ _ l / I / I I / OV \ \ \ IIIIII N \ \ \ \ \ \ \ \ \ \ \ \ \ \-----�-�- --�- \ \ \\\ \ \\ \ \\ \\ \\ \\ \ \ \_ \ \ \ \ \ - \ = SHEET FLOW - --� - -� 1------------------ - \ ----------------------- - � 1 /mil l / / - l I \ \ \\\\\\ \ \\ \\ \ \\ \\ \ y \ \ \ \\ \-\� \ �\� \ 7 �\ - - - - - - \ \ \ T \ \ \\ \ \ \\ \ \ ,\ \\ \\ \ /' - - -- - / / I / / / / �,`/� \ \ \\ \ \ \ \ \ \ \ \ -o <� \I \ I \\ I \\\ \ \ \ \\ \\ \ / / I ! / -I- �/I I , / / / I \ \ \ ) I I Il \ `I \ \► \ \\ \\ \ `\ `\ \\ \\ ` #\ `\ I- /I-/-- / / \\\ \ \ \ 1 , I \ \ \ \ \ \ \ \ \ \ \ \ \ \ I , I - / -d-- - I\I� \ \ \ \ \ I I \ \ \ \ I I I I \ \ \ \ \ \ \ \ \ \ \ \ III I SCALE iv'=60' \ \ \ \ \ \ \ \ \ \ \ I .' 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I\ I I I t , I I \ \ \ \ \ \ \ I \ \ \ \ \ \ r \ \ 1 I I 1 I \ \ \ \ � V \ \ \ \ \ \ \ \ \ \ \ \ ', \ I I SCALE '1"'760' \ I ` \ / / / / / I. / I I I / I I \ \ \ \ \ \. \ \ \ \ \', \ I I I \ \ \ \ I / I / / / / I \ \ \ I I I 1 \ \ \ \ i \ \ \ ` \ \ \ \ \ , I / / / / // I 1 I \ \ \ \ \ \ \ I \ \ I I I I \ \ 1 \ \ \ \ \ \ \ , \ \�\ \\ \ \\ \ \ I 1 \ Cx0' 120 \ \\ \ \ \ \ \\ \ \ \ \\ \\ \ \\ � ,' / ,, , / , /// ' I I / ' '/ I \ \ \ \ I I I I I r I \ \ \ \ \ I I 1 \ Rol \\ 120-, \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \\ \\\• \', \ \ \ \ \ \ ,' / / I /I 11I \ \� \ \ \ \ \ \ \ \ \ \ \ \ /\\ \ \ \ \ \ \ \ \ \ \ \ ', \ A - - \ \ \ \ \ ` ' \\ \\ \`I / / / / / / / / / I \'0\ 1 \ \ \ \ \ \ \ \ \ \ \ \ \ ` \ \ \ \ I, \ \ ', \ \ \ \ \ \ ' / / I / / I / \\ \\\\\ \ \\ \' I \ \ \ \ \ \ \. \ 1 ` `\ \ \ \ -- � � / / / / I / / / \ \ \ \ \ \ \ \ \ `� -_ I \ \ \ PR5.10N ONSITE \ S \ ( ) \ \ d 1 \ / I / / / / / \ \�\ \ �II \ \ 1 \ \ \ \ \ I \ \ \ \ \ \ EX 5 ION ONSITE P ( ) - � \ \ \ \ \ \ \ \ \ \ \ \ I I \ \ \ \ 1 - / I / / / / / \ 1 1 AREA = 1.94 AC - I i / / / / I - \ \\\ \ \ III \ \ \ \ \ \ \ \ I , \ \ \ \ 1 I .AREA=1.94AC - f - \ \ \ 1 1 MANAGED TURF = 1.94 AC - - - -_- / / / I I / I / / \ \ \\ \ \ \ \ \ - I , \ MANAGED TURF=1.94AC -- \\ -- ' II I I \ \ -- ---`-- -- - --�\ \\ II II 11 \\ - - -- _-_ \'c \ \ \ \\\ \ \\\\\ \ \ \ \ \ \\ \ I, \v--_ � I \ \ \ I 1 � - \ `\ _` I i / /I/ / / / / / \ \\ \\ \ \\\ \\ \\ I \ \ \ \ \. \ \ \ \\ ', _ \ �\ �- �� �� -_ r I , l /,/,' I' I / / \ \ \ \ \ \ \ \ I \ \ \ \ \ \ \ \ \ I - - - - \ \ \ \ \ \ \ \\ \ `\ II I I \ \ -- \ - \ ', I I I / I I I -- \ � 1 I I 1 , / / / \ \ \ \ \ \ \ \ \ \ \ I 1 \ \ \ \ \ \ \ \ \\ \ \ \ I I \ \ \ \ \ \ \ \ \ I---- - \ "I \ - \ -- \ II I I / / / � 1 , I I , / / \\\\ \\\ \ \ \\ \ \ \ \ I I \ \ \\ \ \ \ ` -- __I - ---\\ \\\ \\ \\\\,111',II``\ ,I -- I / ,'// \\\\\\ \ \\ `\ \ \ \ \ I l \ \ \\ \ \ 'I `--__I----\ \ \ , 1 11\\",---- / / / \\ - \,` // \ \ \ \ \ \ \ \ \ \ \ I \ \ _ - - - - - \ \ \ \ \ \ \ \ \ I I I \ \ \ \ \ \ I \ \ \ \ \ \ - - - _ _ - \ \ \ \ \ \ / - \ _ \ \ I 1 \ \IA \ \ \ \ \ \ \ I I 1 1 1 I 1 \ \ \ r I \ \ \ \ - - .r \ \ - / / \ \ t / / / \ \ \ \ Il \\/ \ \ \ \ \ \ 'I \ 1/ / r \ \ \ \ ,/ / \ , j 1 1 \ 1 1 \\ \ \ \ \ I I 11 11 I \I \ 1,� `\ \ i \ \\ \\ \\ \\ \ \ \\ - \ \ \ 1 \ \ \\ / I/l \\/ / 1 \ •I \ I/ \ / , / \ \I //// / I I \ -/ - I \ \ \ ) ) I \ \ _.. \ �/ / I I I I l / \ \ \ \ \ \ \ sue, \ 1 \ \/�/i//' ' \\ \ \<\ / \ \ \ 1 , 1 1 \ \ I \ // ' '/ / / I I I I \l \ \ / ) I ' \ \ \\ I - \ \\ \ \ \_ -' \ \ \ 1 \ 1 I ,/ // / 1 1\ I\\ /// ////// \ \ \<p / I ICI \ \ I I I I I \ ` \ \ ' ' I \ \ \ \ , \ \ 1 \_ - - >//'////9// / /// I / I \ \ / / I ' \ \ \ �7 \ \ 1 1 I \ - _ / 1 \' ////iq/%l / / /r// - r // \ \ \ \ \ \ / I I I I I I I / / / \ \ , \ \ \ \"'--__ __ --- � �,\ ' I I I - -- _ / 1 I I I , I / I \ \ \ ' I I I I I \ \ \ I I l goy I I I r 111 /_ - f-mil\fir '111'IIUII�IIII \\ I /!/ / I ' l I C �1 1 / I IIII / I / / \ I I ' I l I I I I I I I I I 1 \ ` I I I I I / I ' ' 8 \ / I I I / 6 \_ ' �\ l \ \ \ \ __ __ 'c \ \ I I I� �� \ - _ _ _ , _ _/ -/ \ \�- -\\ 1 I l II \ \ \ I / y I nl rNl I'll \ I /!/ / 1 / / '\ \ I 11 C/ III \ \ / I I II �II \ 1 / \ \ \ q },s q�ya, - - - _ _ I I 1 I I 1 ' 1 \ \ \\ \ (R I - %\ \.r' - l l ; I I I I I ' I ! 1 \ I b --_- \ ' I I \\ \ / �' IIIII I \ / I\ I / / \ IIIIII I\I1 \ / /I / /\\ I / I IIIIIII'III 1 I I ' ' '/ I \ / \\\ \ , / / I 1 1 I \\\\ I // / I, I / /' \I 1 l I I I / I I I I 1 ! / \ \ I - / / / / I I I I I 1 .' 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ION ONSITE IIIII ��" / / / / / I / I / I l / I I I I I � \ 1 I �// , / / 1 / '/ / / '/ / l I / I I I \ I I SHEETFLOW II 11 I l\ 1 ! I I / / / / / I I l , / I I , 111 I I I l l I l / / l I / , , I I 11 I 1 , 1 1 / I l / / / / / ' / / / , I I I I l l / / / / I , '\ I I I / / I , / \ I I l I / I , \ 1 / / / / / II� I / / I , 1 l I / / ' , \\ 11' I II , / 1 I , , III \ \ I I l 111 I , -, I I I GRASS CHANNEL TO I I 111 I / lI l SHE TFLOW fill , I / l \ , \ I I I BIORETENTION #3A 1 l I I b I 1 1 / / \ I I 1 l , I I II / I\ 1 I I II I I / // I , , / / I,;, Il' I I / / / \ 11/,/ //// / I / I I I / I I / / /1 /I I / ' I I / / / ' / /,/ / / / / / / / I /�/ / / , / / / ' ff / /i / / '/ / lI / / / / / I I l / I / �� I I I I 1 1 I' 1 / I l I / / , , , r I AREA III I / / \ I 1 II f I I I I / I , / / 1 I I / ' `��/ , / / / I I, / / / / ' \ I. / // I I l / / I / , , -� I I - I l l I / / / / / , r l / / I I I I \ I , / 1 III 1 I II f I I I 1 ' 1 I/ I / l I I \` �/ / / / I / � / / / / / ' // I f I I , / I ' / / I ' I , \ .. -- - I 1 \ I I I I I IMPERVIOUS = 0.24 AC 11 1111 / / // // \ III1111I 1 ` \ / / 1 ; , �® \ 1 / / / I I / / / / ' l I l l l \ I\1( I I I I I I l I / / / / , , I - I , / // I/ ' •�� II I 1 I \ \ III , �® \ \ III,11'I 11. I \ \ // I / I l l / I I / / I l ' / I\If '/ '/ / ,/ . . . \ I I I 11 I I / // , / / / / / I I / ' \ _ �-- -i-�\ �\ II FOREST=0.01AC \ II III - , \ I I MANAGED TURF = 0.59 AC \ 1 I / / - I \ I I'//'/ , q r I l! , \ ' l l ' I I \ I / / I I / l \ \ V 1 ' I ' 1 I l I / , / , I \ ,' ' I = __ 4 I I l / / / I ' ' I' / / 1 �� \ I I \ \ I \ �\ I I I I b I \ 'I // \ / / > / \ I// I I I I / / / I/ I l \V I / / / I l I / / / / . , ' - 1 111 III 1 1 I l l / I �r I 1 \ _ I / / / l I_ ' I / / / l l / I- I I / / / / , , �r I I / III 1 III I \ I - // l l I / I I 1 1 / / 1 I , / / � �- \ 1 1 11 1 I I I / / �� , I \ \ I I \ I l,/ / I \\III III - / , , / I - 1 / / / / l / l \ \ t,1 it I l/ I I / , / l I / 1 p I l I I I � _ ' - I I I 1 I / I I I I / / I , , \ I I SWM BOUNDARY 111111 _ - I I 1 \ \ \ 1 I 1 / / / / / l \ II / I 1 1 I / l l I I 1 / , , I' \ 1111111 I I j \ I I \ \ , I I / I ' t u1 I I I / / I l l / / I ' I l I SWM BOUNDARY 11 I IIII , \ \ \ \ I I / I ,. , , , I / I/ I / , l /I ! \ \ / / / f I / \ � / I , / I I I I I I I I I I I I / / / I / F.,. - I I I / I / / � l l I l \ \ 1 III \ I 1 1 11 1 \ \ I \ t III III 1 \ \\ , I /I I / / I / , \ / !�'I'/ / / I I I I Il /' I \ „ I I I 1 \ II I l l , I / I ' ' I I l/ \ \ I / / / / I I I I 7 I �� / I I I l / / / / I \ I l / ' I , \ IIIIII \ - PR4.10N (ONSITE) I ` I / / / I /' / // // 11 - -� I I I I I l 'l / / / /' / _ "'-- - � 1 I \ 11 I1 l I - - - II \ / I I I l If I / / / / / / / I 1 1 1 I , \ IIIIII \ \ 1 IIt(/ ! I I I � I I \ 1 \ - \ 1 if / / I / ) , I I I I I I r I I , , I I / / / _ '""-- - / l � / � / , I , / / / / / / // ,' � I 1 I � 1 \ II II \ I I SHEET FLOW \ \ \ IIII I ' \ \ \ \ II f I � � I / / I 111 I / ) ' I I I I 1 { I 1 I I / I - _ \ I / , I I \ 1 / /, / / / / _ 1 _ 1 I III ) II ,I ! I 1 / l l -- 1 I 1 1 1 1 / / / , � � _ _ _ _ I \ I I I I I / / / / _ - - 1 \ IIII' / / I I 1 I I \ 1 I'll l SHEET F OW I \ \ I I/ I I I \ 1 \ r 1 \ \ / ) , 1 I I // _' 1 / , / / , _ _ 1 / / / 1 ® I I I 1 , I / / I I I / / , / l _ - _ I ' \\ " II 1 AREA = 0.49 AC I \, \ I / II I I I \ \ IMPERVIOUS = 0.09 AC \ III \ I } / / 1 II I I // I l I I I I \ 1 I 1 1 1 / 1 I / _ _ I '//I /// ' /' ------__- II \ 1\ I 111-r _�, \ II I / / / / / / / / /�,-____ - - \ I EX3. ION ONSITE \ I / / I I I / ' / - - - - - \ 1 . , � 1 I ( ) I IIII \ / \ \ 11 / I \ \ \ \ , 1 I I I \ \ 1\ 1 , r I I I / _ _ / I / / / I ,-- __--__ I I I 1 / l / I / I / -, I _ _ _ - - - - I , l 1 ' / / / / I , , I \ / \ 1 IIII I MANAGED TURF = 0.40 AC \ I \ I I \ \ III I \ III \ \ \\ / I 1 \ \ \ , 1 I I 1 I 11 \ I r I 1 I I I / - - _ \ / / / / / - - - \ \ , , , / I / / / , I - - - - - - _ \ I , I \ AREA = 1.27AC 11 \ \ \ \ �\ I\ � _ I 1 , / / / / / I I - - - - \ ` \ I l l \ I - _ _ I I I I I / / / - III / / , I . / / /, / / / / / , BIORETENTION FACILITY #3A _ _ \ / I / / / / I / / I ' I LEVEL 2 I / I III � PR3.10N (ONSITE) \ \ \ ` AREA = 1.35AC I I, \ \ \ , I 1�11 I _ I 1 I ' I 1\ \ � _ _ I I / I / I I / / , I / / , I IMPERVIOUS = 0.61 AC III , / / / / / /, , /-----____-- ` / \1 / II /, // /// // I I I , /, , / I I - \ / I , I I I MANAGED TURF= 0.66AC / / / / / I I / I ', 1 I \\ 1 \ 1 / I I SITEOUTFALL3 \ 1 I I 1 1 I11 / I TOTAL AREA=1.6 AC \ / I I I I / I / I / / I - - / / // / / / I / I i l 'I '/ //I /, I / / / ' / - - - - - - - - - ' / / / I / / \ \\ l III nl IMPERVIOUS = 0.72AC / II SITE 3 CO ' TOTAL AREA=1.4 11, / I I 1 \ / AC 1 / I I I I / _ I I I // , / / / I I / I \ I I 1 I 1 [---r �� � \ / / / // / '/ / / / , / / / I ' / I , - - - - - - \ � \ 1 1 I - �� �T�f \ \\III I I I 1 �� 4h-4 \ \1 I'll \ I I I b \. I I I 1 I / I I I /I / , / I / / I / , SWM #2 100 LF OF I I / // I / I ' / / / / ' / / 48" CMP DETENTION - / / / / / / \ co MANAGED TURF- -63-AC 1 �. ---J - 0 q . \ I11 / 1 \\\ 1 I \ \ I I I I I I I � ' ' - - \ , - / / , / / I �, I I \ 1 I . I I I l _ \ - \ /' / / / / I/ I / , , , , / / \ - - \ \ I \ 1 I �- _ //,//// I/I /I//// /,'I/ /I , I \ \ �I 1 I I II ,\ \ \ I I I I I // I I I I / I I I _ / /, I // / / I I \ \ \ - 680 , \ S \ r II \ \ \ I I I I 1 _ �\ ' / ' / / / / I , , I 1 I - - \ \ I ' -q I 1\ � \ /I //// / I '' - _-- \ I / a y1= - / , -_ \ ' / ' , EX3. IOFF OFFSITE - - - _ II I '' I I 1 � I I I I \\\\ \ ` \ \I \\\ I \ I I 1 \ \ \ \ \ I I / I / / I / ' I' ,' , I \ I I / / / i / � - \ I I // I , - --- \ I ' / ' , EX3.10FF OFFSITE - - - _ I r--_ � - - \ \ \ l _ ^ - I .._I \ \� \ \ \ k' I \ I 1 \ s I I I I 1 \I \\\ \ \ 1 I I 1 I \ \ \ //I / / / AREA=0.42AC �- /I I I \ \`_ _ I\\� \ \ \ \ \ \ \ \ I_i I I I I / / I. I - I III \ I I I \ \ \ \ I I I I 1 / IMPERVIOUS GRAVEL = 0.05AC - - I I Y I \ \\ J \ l 1 (GRAVEL) \ I I I 1 \ \\\\ '// ' / / AREA=0.42AC - t 'I / / - I / IMPERVIOUS GRAVEL = 0.05AC - I I (GRAVEL) - \ ! I I \ \ \ 1\'� \ _ I \ v� \ \ � \ \ \ \`\I 1 I --I I I I ' 1 \ I 1 \ I I 1 1 I I I 1 \ f - / I / I / FOREST= 0.21 AC - \ _ I llll I I \\ \ \ / I / MANAGED TURF = 0.16 AC - \ _ \ \ \ \ \ �- I - \ \ \ \\ I - I \ \\\ \ \ \ \\ _I I I I 1 I 1 \ \ / I / / , I I _ - - / / / I I FOREST= 0.21 AC - _ / / I / /, -- I 11 I / / MANAGED TURF = 0.16 AC - \ I- \ \ \ l \ \ _,� -. / 1 _� -,1. �� " H FLOW \\\ �_ I \ \\ - !- - -I \ \\ I I ` �I I \ \ 7\ �� - / // / /'/'/' I , / ,' I ' I _ - - _ _ _ \ \ / ; 1 , U l \ \ \ \ - - = _� � / \ I 1 -;�� \ \ \ II \ d ,yam HEFT FLOW \\\ 1 \ \ I I \ '\ \ \ \II I I 1 , / / / I / / - - - - - \ \ / I J" I / I / / ' / I - - I I I /, / /I / / / \ / ! \ \' = ' - = � I t \ - _ 1 6 `\ , I o \ \ \ \ \ \ � 1 / I I 1 \ \ \ I \ \ \ I II I , I I b \\ ._. / / / I I / / ,----- -_ l Ill \\� _ _ --- \ I / / I / / / / / ' --- /I /I 91 r \ ------ -- - , / / I / / / / 1 I l 1 ll \ - _ �\ \ / �/ / \ \ \ \ 1 f 1 \ \ 1 / / / \ \ \ \ \ \\1 / I 1 \ I / 1 / / / ' / ' '/ / ' I----- -_ _ l I - I , / / / / -_ I - // / // / / I 1 I l 1 11 / / / / 1 -685 \ \ \ o - - - \ -- -- I / \ \ \ \ \ I , \ \ \\ 1, / \ \ \ / I \ \ \ 1 I ,'/'/' / / l I I / / � / � `I ) l I �ll 11r I, 1/1I - - �\\ ` \ \ \ �`\\ i 1 , �; - \ \\ \ \ \ \ V \ \ \ \\ I \ \ / I / // I / � 1 I / I II I I / 1 ! l V l l I 1 1 ,, BIORETENTION FACILITY #2C I ".._ \ - \\ 1 0 � p" � \\`\\ o° \ \ o00 \ ` \ \ \ \ / \ \ \ i I \ \ \ \ \ , \ \ �\\\ , I I I / . - \ + / I ' I - \ \` \ \ ` / I I I I /, il. \ \ ♦ \ \ \\ 1 I ♦ \ `\ \ _ , I / I LEVEL2' I I I lI \` ," \ \ \ \ � � -` -y \ \ \ \ II \ \ \ \\� / I \ \ I I,� , / l I I I /' l / ,If11 _ , \ \ \ \\\ I _ram \ \\\ \\ \ I / / l I I , I / / / I, � 1 I , I / I,; p �_.i %��/% R \ \ \ � ` \ \ \\� \ ' - I l I I I I I I I , I , ■ l_ \ \ \ \ \ \\ \\ \ \ \\ f I / \��\\ \ \\ ` \\\\�\I `I� ■-_-- / I I I l I III 11 l l 1 I l f / l / I I / / I I 1 11 / ' / I t'III 6' \ \\\\ \\ \ / \ �8 \ \\ ' \�\ 0\ \ \ \\\ II \ \ \ f/ -I I \ II \ \` \\ \�\ �'�..� l/I' BOUNDARY / I ,' // // , 1 I 1 ; ; l 4 I, , , I I I , , `�"` ,L_ \ \ \ I I I / / '� � , \ \ . 1 , �„� , �� ,,I , \ \ \ \\ I lI l' , �� , I T I i HI_ r( J \ \ \ \ \\ \ \ I I I I I I / ,I I `I / / I I II, 1 I I I .%i/ r-I ���,,, \`. \ b o \1® \ \ V \ I I I I I I , I / / , / it 1 I , I I 11 I ,, \ / \ \ 1 \ 1 I I 1 '` I/ /- 1111 I, `q >♦ \ I^\ I I I \ 0.r \ \ \ \ \ \ \I 1 \ \ \ \ \ \ 1 I \�. \ \ 1 , \ :\ \\ \ Ili \I I \ \ I I 1 \\ \ I I `\\ \ \I IIII\ 1 \\ 1 \ \ \ I Illl 1 - III \\\ \ ' I I �� 4 ' ; ' l , ,I / \ I I / / I I I I 111 \ f \ r / / I ! i \ I I I , / I \ I / I \ \ \ \ \ 1 I I I I / / / / / I I I I I \ \ \ \ 1 I I I / I I \ I / / / / , I I I I \ 1 I I , / / I ! I I , I1 , , , 1 I/ ' BOUNDARY / . \ \ \ \ �. / \ \ \ \ / .1 T \ ' E C .-. b ..... lOklS�1.9 \ \ \ \\\ I h\ I \ \ \ \ ji1ll I 1 \ I \1 I , \ \ I IY 1 I 1 1 \ \ \I Ill\ I \\ I I \ �s \ \ I IIIII, 1 \ \ I\ \ II I 0 \\ \\\ \ \ \\ \ \\ \ ; I1 /11 \ \ \ 1 I I I I . /�, ' I ) I I, 1I ..11 .'= ... o o i , / , L 1 1 I I 1 I ) ` EX2.50FF(OFFSITE) !V I:11 �y � .\o,_ / ,�� ,,_.:�..:. \ 1 I // i I I I I I I I I / I i ( e / / ( ) I I I 1 I 1 \\ -I TO SITE OUTFACE 2 1 I I I I I I I I IMPERVIOUS=0.90AC i I 1' � MANAGED TURF = 0.34 AC \\\ \ I \\\\\ \ � _ _ \\ \\\\ \ \ \ I \ \\ \\ \\\ 1 I q _ _ _ \ \ \ I . - \ \\ -- ���\ \ I\ \ \\ \ \ \ I I \I 1, \I'� \ \ \\1 l \\ \ \ I I I 1 I / I I I I I I , S I l I I I 1 I I I I I 1 _ 11\ ( r� I I I I I r TURF = 0.34 AC I I \ rn I I I I I I I Y \ 0 I I , r - f - URF- �` _ V `� - ---.: ".r � 0.72AC TO SWM 1 . �� 1 OUTSIDE SWM \ \ \\ \ �\ \ I l \\�\ \ \\ \ I ., \ \ \ `� \T \ I \ �\ \ � I , \� \ - \ , \\ \S/ E TF I \ -� \ I I I I I I I I - - / / AREA = 3.01 AC I I / I / ! I I I l I I 1 I I I 1 I -, I' I /, I I I >/11 �1 I I/ 1 IMPERVIOUS = 0.96 AC I ~ - II _ I 1 / I I I I I V I I I I I - I I . r,.,- MANAGED TURF-2.05 AC I p II \ \ \y \ I 1 I l\ \ \\ \ A \ � 1 1\ I) 1\ \ \� _ \ \ \ lT �y-,�{U�\F LL 2 \\ \ \� 1 \. SAC R 12.95AC \ II 11 \\ I l - _ I I I I I I I I I I I /,' I I I I r FI / I I I I I I I I' � , I I I I I I I / f I I I / I I I I I I I / I I I I ` - ' ' I ' I ' _ ' / I I 1 ' I I/r _�<_... 4 LIMITS CARRIED - _. II OVER TO DA C � ` k0T L REA 1, 77;C I\ \ \ '� \ I I I\ 1 \ \ \ �\ \ I 1 \ \ \ I � /J \\ ,\ \ I \ II ! - I / I 1 I I t I I I I I , I ,,y / / EX2.3OFF OFFS/TE 1 - l / 11 I ( -- _ _ = 11 '1 I I 1 I / / J / I / / ,- I ! � MILL &OVERLAY I I T \. � T 1 \ �� . ' I \ l 1 I l I \ \ \ I \' \I 1 \ i \ \ \ II ' I I \ \ \\ \ \ \ \ I I I` / I - 2 III I I I I I , ! / / - EX2.30FF(OFFSITE) I � I 1 I I - I I ! I1 / / I I f / / r ) MILL &OVERLAY I I -- _/. _ _ _ -J II - - �' - r r"ti \\ \ I \ `� \ \ \ I I \\\ \ \ \ . \\ \ \ I \ \ 1 \ \ I 1 \ ,\\\\\ I / 1 ; - - � -- - - - � _ _ _ _ I , \ \\. , , \ ` I l I I I I I / I / I , , _ 1 II I AREA - 0.55 AC I I _ + _ I I - ; ,, I I ' 1 I \ \ 1 l l I / / / / I / / I r I I / _ 1 1 '= -•= a 71 1 \ _ / _ II '. _ - _ I I 1 . \1� \ IMPERVIOUS - 0.50 AC I I �++ \ \ / l 1 / 1 / / / / / I , / / M , ! 1 / / I I I I 1 �'T �,.�. \ \ \ _ _ - _ \ \\� I / I \ 1 , 1 \ \ b ' I l / ) I , '� / I ' ' I I I AREA = 0.55 AC l / / / / / / / I I' / _ 1 I .. IMPERVIOUS - 0.50 AC I I I / / / I / / / I l I 1 / I l / _ I - -�' ' 1 I �� ;� I ® "'" - ----- --- \� • • _ -• - w \\ ` \ \ \ ` o \ \ I I 1 1 \� \ \ \ I I � I 1 \ \ \ \ 1 \ , / , / / / I / / MANAGED TURF = 0.05 AC - I I I 1 I - - - \ - ` \\ I ' l \ , \ \ / I I MANAGED TURF = 0.05 AC - I /,/;I/'/I I'; _ - \_ \ \ \ /IIII /, II ,, I//I, - I I \II i\ 1_.=====m_ /,,,/ / / r , . I , \,I I I � -�- -_- � �• ,., \\�\\l!//;I)\ \ \.<\\\\\\I\,,�,\1, \ I /, I I 1 \ " \\ 1 I'/' Il/I---, - - -- I,-\,l //I/// ' I I IJ I \ \III -- ' ,\ r\\\\\\I\,\\\ I / 1 \ I \ \\\'\\ I , , 1 - 7- / , / I I I I EX220FF (OFFSITE) I / I / AREA = 3.42 AC 1 / _. _If.< � AC / / , / I • -i r r q /' / / - / I \-\�\' \ \ \ \ \ \ \\ l \ ,� \ \\\\ \ \ \ \ \ \\ \\ \ q \ \ \ \ \ \\q \ 1 \ \ \ ` \ \\ 0 \ I I 1 EX2.20FF OFFSITE I / / / \ / / / / / AREA = 3.42 AC 1 , / I' I I _ I l I I - - - ::� - be C� \, \ \ \ I \ \ \ �\ \ \ \ \ \ \ \ SWM #1 STORMTECH \ / IMPERVIOUS - AC I \ \ - q __ \ \\ \ \ \ \\ \ \\ \ I /t1l I r IMPERVIOUS (GRAVEL) = 0.1I AC I I 1 \ b \\ \ \ \ \ \\\ \ \ \ \ \q \\ I I / \ \ \ MANAGED TURF = 2.29 AC \ � \ \ \ I / , , f IMPERVIOUS - 0.22AC I / , / IMPERVIOUS (GRAVEL) = 0.11 AC I I / I ' I MANAGED TURF = 2.29 AC _ u o H. DETENTION SYSTEM WITH ISOLATOR ROW \ \ / I , 1 i� . � � � / , I I' / / PERVIOUS(FOREST)=0.80AC II, I SWM '/' 11 - \,1 \I�\\� \ \ \ \ \ \ � \\ I \ \ \ \ \ \ \ \ \ I\\\ \� 1 II'I\1\\\\\ `\\ / / I I l f / I ' ' / PERVIOUS FOREST-0.80AC 4I (FOREST) ) - I I ' �I \/I _ i - -- I I SWM \ 7AC I .��. \ rn rn\ DA=2.76 ACRES rn \ w \ r, / \o\ \ p�\\ 1 \ \ \ \� I \ \ Y\ \ \ \\ \ \ \\` \�\U\''I' I , , , , - - \ I M�� t -` - I 1 \ \ \ \ 11 \\\ / , / / , I I I I - l I I , I �.. BOUNDARY \ I III I 1 , I \ \ \ \ / ll / , f I I \ \ \ , I/ I 1 I - - , / I J�1 .[" I I \ . \ \\ \\\, '' . I I -- -- ` \ I 11 I'/ ),I Ill I1` \ \ , \ \31 \1 - / / , / I I I I 1 - - 1 I I / I .. . , / I I I 1 ,, ' / I I -- -- \ (I i BOUNDARY \ I t� 1 �� r, W�� _ 1 .. l 1 > \ \ \ , \ `\ \ \,�II\ \ V \ \ \ \ \ \ \ 1 \\\ \ \\\ \I I . �\ \\ \\\ / / - EX240FF\ \ (OFFSITE)( - - Y _ / ` L \ 1 I ` \ \\\ \ ( \ 1, . >} \�\- \� \ / I - 0 \ fj EX2.40FF (OFFSITE) - - - _ / I L \ \ , \ \ \\ \ \ \. \ I II MILL & OVERLAY - - I / I / 4F AREA = 0. 07 AC - - _ - - I - - - \ _ I - 1 , I I \ \ I / I \ \ \ \ \\\ \ ' / I I \ \ \ � , \ MILL &OVERLAY - - _ I / AREA = 0.10 AC - / / / , j I - 'OC __ o \\ \ \ \� y� \ \ \ \. \ ` - - _ / I / / IMPERVIOUS = 0.07AC - I _ - - - / \ - - - - - ,�- �i �f / / / I MANAGED TURF = 0.00 AC - \ I II / - „ _ � = rJam_ - „/ L�lq \ I -A- I I I \ \\\ I \ \ \ I ' /', I I \ \ 00 \ \\\`- '-� I IL \ \ / \\ - \ .- ' I / YMPERVIOUS = 0.10 AC - - _ , - ' ' T MAN D TURF = 0.00 AC \- / / / - � , I I \ ^,�` C - I I ' o rl r n - e \ \ .: I \ \\\ \ _ , I \ \ 68 / \ \\ \\\ \ %; ; \ - I Y - \\ \ =- IIL I \! I , - - ->s- =ids _ � / � . � ' - I \ '� _ = - - I -� T' i � I 1 / I I I / l l , I v _ . �� I � s P i - 'V � q � � f I I / 'I �_, _ I_ _ � _ _ _ - - _ I I I / SWM BOUNDARY , _ _� r : ; - - _ _ _ _ _ _ - - - - - / I l I I \ I EXZ IOFF / O ' I '■ / _ _ - \- -- - \ - - - r / , , , I \I I I I , , I I / / Imo _ I I I I SWM BOUNDARY I I I I \ 1 / / J� e •�• ,1 - i q � � ♦ _ I _ � _ I_ - _ - - _ - - v / = _- -_�-_ __ _- _ _ - - I O ' /' \ \ ' - r 1 / (OFFSITE) I \- I I // _ / \S � goo / ''// \- AREA 0.13AC , \ , \ \ \\ \ ~\ \ \ ' \\ \ // I_ I I 1 I \1 I I '\ ! I \11 _ IlE"�\ _--� \--- \ `\ - - �Q / / /� f -\ \ \ ' \ IMPERVIOUS = 0.0 AC \ ' \ I I _ 1l 1 ' _' ' Ii� I I \ \ \ \ MANAGED TURF = 0.13 AC I _ I ' _ , _� \ \ \ \ / \ L 1 \ - \ \ 1 I \1 - /I\ / I \ PRZ 10FF (OFFSITE) ' \ ... ff I� ,, I_ _ - _ \ - - _ _ - - - \\ - _ ' _ _ _--_ -_ -/_ \', ' Ii \` - - _ _� - - \ , \ , l l I _ I I - �_ I I 04 1 , \ \ < - / / w l ' \ � TOTAL AREA=1.09AC / \ �, I -_s / �\ \\ \\ \\ I < - C ' , _ - - \ \ IMPERVIROUS o0.0 ACa \ � \ _ - I I \ \ t -- _ = - - - ', y - _ ' - � \ , o_ - ` \ / I - I / \ � �/ , - w I I � ' t /---' - 11-- .. < ' \ , , I \ I - _ i , I / / I _ ,r I I I '\ - _- _ _ t l - \ I MANAGED �(/R6+�AC ) ., I / _ .r � / I - �- / SITE OUTFALL 1 = - _- I < r � \ \_-� - � - / 1 / _ �_ 1 - I 1 _� _ - - , \ i / / / `-� - � - _ - ' / i ' -- --t - �_ c i I I I I1111 l TOTAL A=089AC _\, _ _ _ l s s _ _ , \ I, I I TO ARE so - \ f _ - __I. - - \\ \\- _ I / �_ _ \\ TO SITE OUTFALL 1 ' I '/ - ff I / / _ _ _ - - :-_ -_� \`\\\- PR1.10N(ONSITE) I I I - - _ � - __�_7-_ _ - _� / I - - -%_ _ - \\ I \ \ I� �_. _ -I=_ _ --� .. I/ , i-�/ I' -:-/. AREA=0.29AC ! I / ) / I� I / - b I- I _ _ _ a _ , , I I q I I IMPERVIOUS = 0.00 AC / , ' //z ' I \ • / � ' ' ' I I/' ( , / I / PERVIOUS (MANAGED TURF) = 0.29 AC I I / l I - o _ _ m _ _ _ I - -_-_ I = _ - - I . ��� _ �____ ___�_�_�_'� f _ - / - n I _^ , I , , i r q - _ I - ' 1 \ / , / / / A ' _ �_ _ 1- � > \ I �i ,.\ AREA = 0.12 AC •• I/ ,' 1-�/ I �\,� 1 IMPERVIOUS=0.03AC I I / / I I PERVIOUS (MANAGED TURF) = 0.09 AC FACILITY #2A LEVEL 2 I / l / / , , - / ) I ' ', ' I I I I / ,, � / ) I .- , , > . l I / I 11 I / I I , , I , . . / , // / / , 1 � \ - - EX200FF (OFFSIT / , / I I I 1 \ , \ \ EX1.10FF (OFFSITE) I /,', I I i I I / / , i , , ,I , I - * / / � , // / , l � \ - EXZOOFF (OFFSIT / , I I I I ( , PRI.IOFF OFFSITE I / I I I I I l \ \ AREA = 0.77AC ) I /I/,', I I / / I' ' , / I I - AREA = 4.53 AC / \ TO SITE OUTFALL 1 , I \ I / , I l I I\ 1 I I , I , - - - -IMPERVIOUS - 0 1 AC / ,, ) l I \ AREA = 0.80 AC I I I I / I / , ' / / ' / ' I - - - MANAGED TURF =3.92 AC / /, \ IMPERVIOUS = 0.40 AC I / , I , I / - - , AREA = 4.53 AC / \ , -- I , , / - - - -IMPERVIOUS - 0 1 AC / ,, , ` - - - - MANAGED TURF 3.92 AC / / \ I I I l I 1 I I I \ IMPERVIOUS = 0.38 AC PERVIOUS MANAGED TURF - 0.39 AC l ( ) I ,' I , I , I / I I I / ' , / I i /, ' / I ' / I ' - - - - I I / / \ / I I I I 1 / I, * / I / /� ` / I I I I I -- / II, , I, - /' I / /� l � llll l,I I -- - -- - - -\- / // / / ' /� 1 , I l l I l l l 1 II ' l l 1 I I / / ' , I I I I l ' ' ' I ' ' I ' I I I 1 _ I , I _ _- // /, I, , 1 / , % / , / , I I I 11 _ _-_-`---_- ``' / ,, II/, - - / / - - /* / / / I 1 --- -- --\-'' ,''I / I' I L / � //// // I I - /ANt 1 l 11 l/ 1 11 I I, I II lI I lI I r I II _ I __ - / /I I , / / , %- I ------------ -/I,' �'I II'/, \-/_'/'/',''j,','I -- I I -- /' /�/r,.' ,'� l,l I I I I /, lll1I! I I i I - /, , I 11 I II /-/%//i/% ,,, //1, I /I- / ------,I''/ / , I I I I 1 I I �I I 1 1 1 ' /I ''ll'I' I 1I 1 I I ' 1 I I II , I /, , I - ' / r SHEET FLOW /(' I I---�I'', I I I I I 1. 1 //,, , 1 I , / rtT�' I I I 1 I II 11 I, l l I; / / / / I , I I , /, /,, ., I , 1 / / , / - / l,l I - ' -_ii / ,, _ / SHEET FLOW I rI I I I I I / , I I I I I I , I 1 1 I I II II I, l l I f / / / , ' , I '/ I'I ', / / l / I / I , ' / //, ,/ /I/ , I l I I I I I /\� / I �` I I 1 l 1 1 / I 1 1 I /�( / _'-\ , 1 I h l �-1 I I / ,'/ /'' /I,/ lrl'� i I I // / /' I / I/ 1 1 1 11 /' I I/ I' ' // I I // -\ , I 1// I I I i � I I l l l I/ I 1 1 I l I 1 I� I �� I // /I/ // ////, /, !//r /'/ / /' / / /// I I I l , �� /' 1C/ I \ I I 1* I I,I 1 1 1 EX 6.10N (ONSITE) I *I AREA = 0.25 AC 11 II I 11 I I / /// I / l l l l l / I I I I I I// I I I / l 11 I I I // / I' \** ' I I/' * I 1 ' I,I I, l PR6.10N (ONSITE) I 1 1 1 I I AREA = 0.25 AC I I a` / ///, l/ I l l/ I I I I I I I I I I / I 1 I l l, / I / /' I' I' \ II I I MANAGED TURF = 0.25 AC �\ I I / I I I I I, I I I I I I '// I I I I �\ � I 1 1 1 1 MANAGED TURF = 0.25 AC I 1 I 1 / I/ I I I I, I I/ I I I' / I / I \ I I I I I I // // / /,' \ ** \ I I I I I I I I I / I I I I / I f l I l \ I / I / / I I / l I I I I/ / I I/ ., / I / ICI I I I I I I 1 I - \ t 1 1 I I I I I I i I I I I I I , 1 / / / / / / I / / I 1 I /, , I PRE -DEVELOPMENT CONDITION POST -DEVELOPMENT CONDITION V AA D O VM DO Architects vmdo.com 434.296.5684 200 E Market Street 2000 Pennsylvania Ave NW Ste 7000 Charlottesville, VA 22902 Washington, DC 20006 000*000 i 4* 41' TIMMONS GROUP YOUR VISION ACHIEVED THROUGH OURS. s bemarle County Public Schools ALBEMARLE COUNTY PUBLIC SCHOOLS CROZET ELEMENTARY SCHOOL ADDITION, RENOVATION AND SITE IMPROVEMENTS 1407 Crozet Avenue, Crozet, VA 22932 VDOE Project Number 002-34-00-101 VMDO Project Number 1284 van D. Cichocki Etc. No. 53741 6/*h2 Checked By B. CICHOCKI Designed By K. ROESER Drawn By K. ROESER ISSUES AND REVISIONS NO. SUBMITTAL DATE 1 FINAL SITE PLAN & WPO PLAN SUBMISSION 10.AUG.2020 2 FINAL SITE PLAN RESUBMISSION #1 25.NOV.2020 3 WPO PLAN RESUBMISSION #1 02.DEC.2020 4 FINAL SITE PLAN & WPO PLAN SUBMISSION 05.FEB.2021 5 SIGNATURE SET 18.MAR.2021 6 WPO AMENDMENT #1 28.MAY.2021 7 WPOAMENDMENT#2 24.AUGUST.2022 8 MINOR SITE PLAN AMENDMENT #1 24.AUGUST.2022 STORMWATER MANAGEMENT PLAN C6n0 �1 O 2011 BMP Standards and Specifications Project Name: Date: Site Information DEQ Virginia Runoff Reduction Method Re -Development Compliance Spreadsheet - Version 3.0 O 2013 Draft BMP Standards and Specifications Crozet Elementary School 6/28/2022 Linear Development Project? No Post -Development Project (Treatment Volume and Loads) Enter Total Disturbed Area Pre-ReDevelopment Land Cover (acres) 7.65 Check: BMP Design Specifications List: 2013 Draft Stds & Specs • Linearproject? No Land cover areas entered correctly? Total disturbed area entered? A Soils B Soils C Soils D Soils Totals Forest/Open Space (acres) -- undisturbed forest/open sace 0.01 0.01 Managed Turf (acres) -- disturbed, graded for yards or other turf to be 5.83 5.83 Impervious Cover (acres) 181 1 1 1.81 7.65 Post -Development Land Cover (acres) A Soils B Soils C Soils D Soils Totals Forest/Open Space (acres) -- undisturbed, 0.00 protected forest/open sace or reforested Managed Turf (acres) -- disturbed, graded for yards or other turf to be 4.86 4.86 Impervious Cover (acres) 2.79 2.79 Area Check OK. OK. OK. OK. 7.65 Constants Annual Rainfall (inches) 43 Target Rainfall Event (inches) 1.00 Total Phosphorus (TP) EMC (mg/L) 0.26 Total Nitrogen (TN) EMC (mg/L) 1.86 Target TP Load (Ib/acre/yr) 0.41 Pj (unitless correction factor) 0.90 Runoff Coefficients (Rv) A Soils B Soils C Soils D Soils Forest/Open Space 1 0.02 0.03 0.04 0.05 Managed Turf 1 0.15 0.20 0.22 0.25 Impervious Cover 1 0.95 0.95 0.95 0.95 • •• Land Cover Summary -Pre Pre-ReDevelopment Listed Adjusted' Forest/Open Space Cover (acres) 0.01 0.00 Weighted Rv(forest) 0.03 0.00 % Forest 0% 0% Managed Turf Cover (acres) 5.83 4.86 Weighted Rv(turf) 0.20 0.20 %Managed Turf 76% 73% Impervious Cover (acres) 1.81 1.81 Rv(impervious) 0.95 0.95 %Impervious 24% 27% Total Site Area (acres) 7.65 6.67 Site Rv 0.38 0.40 Treatment Volume and Nutrient Load Pre-ReDevelopment Treatment Volume (acre-ft) 0.2405 0.2243 Pre-ReDevelopment Treatment Volume (cubic feet) 10,475 9,770 Pre-ReDevelopment TP Load (lb/yr) 6.58 6.14 Pre-ReDevelopment TP Load per acre (lb/acre/yr) 0.86 0.92 Baseline TP Load (I b/yr) (0A1 Ibs/acre/yr applied to pre -redevelopment area excluding pervious land proposed for new impervious cover) 2.73 'Adjusted Land Cover Summary: Pre ReDevelopment land coverminus pervious land cover (forest/open space or managed turf) acreage proposed fornew impervious cover. Adjusted total acreage is consistent with Post-ReDevelopment acreage (minus acreage of new impervious cover). Column I shows load reduction requriementfor new impervious cover (based on new development load limit 0.41lbs/acre/year). Land Cover Summary -Post (Final) Land Cover Summary -Post Land Cover Summary -Post Post ReDev. & New Impervious Post-ReDevelopment Post -Development New Impervious Forest/Open Space Forest/Open Space 0.00 0.00 -Cover (acres) _ Cover (acres) Weighted Rv(forest) 0.00 Weighted Rv(forest) 0.00 % Forest 0% % Forest 0% Managed Turf Cover Managed Turf Cover 4.86 4.86 (acres) (acres) Weighted Rv (turf) 0.20 Weighted Rv (turf) 0.20 %Managed Turf 64% %Managed Turf 73% Impervious Cover ReDev. Impervious New Impervious Cover (acres) 2.79 Cover (acres) 1.81 (acres) I 0.98 Rv(impervious) 0.95 Rv im erviou 0.95 Rv im ervious 0.95 %Impervious 36% %Impervious 27% Total ReDev. Site Area Final Site Area (acres) 7.65 6.67 (acres) Final Post Dev Site Rv 0.47 ReDev Site Rv 0.40 Treatment Volume and Nutrient Load Final Post- Post-ReDevelopment Post -Development Development 0.3019 Treatment Volume 0.2243 Treatment Volume 0.0776 Treatment Volume (acre-ft) (acre-ft) (acre-ft) Final Post - Post-ReDevelopment Post -Development Development 13,150 Treatment Volume 9,770 Treatment Volume 3,380 Treatment Volume (cubic feet) (cubic feet) (cubic feet) Final Post - Post-ReDevelopment Development TP 8.26 Load (TP) 6.14 post -Development TP 2.12 Load Load (Ib/yr) (lb/yr)* (Ib/yr) I Final Post -Development Post-ReDevelopment TP TP Load per acre 1.08 Load per acre 0.92 (Ib/acre/yr) (Ib/acre/yr) Max. Reduction Required (Below Pre- 20% Nitrogen Loads (Informational Purposes Only) ReDevelopment Load) TP Load Reduction Required for 1.23 Redeveloped Area (lb/yr) TP Load Reduction Required for New 1.72 Impervious Area (lb/yr) VA DCR SPECIFICATION NO. 9 SOIL MEDIA SPECIFICATIONS VA DCR STORMWATER DESIGN SPECIFICATION NO. 9 BIORETENTION Table 9.7. Bioretention Material Specifications Material Specification Notes Filter Media Filter Media to contain: • 80% - 90% sand The volume ofilter media based on 110% Composition • 10%-20% soil fines of the plan volume, to account for settling • 3%-5% organic matter or compaction. p Available P between L+ and M per Filter Media DCR 2005 Nutrient Management The media should be certified by the Testing Criteria. supplier. Mulch Layer Use aged, shredded hardwood bark Lay a 2 to 3 inch layer on the surface of the mulch or stable coarse compost. filter bed. Alternative Use river stone or pea gravel, coir and Lay a 2 to 3 inch layer of to suppress weed Surface Cover jute matting, or turf cover. growth. Loamy sand or sandy loam texture, Top Soil with less than 5% clay content, pH 3 inch surface depth. For Turf Cover corrected to between 6 and 7, and an organic matter content of at least 2%. Use a non -woven geotextile fabric with Apply only to the sides and directly above Geotextile/Liner a flow rate of > 110 gal./min./sq. tt, the underdrain. For hotspots and certain (e.g., Geotex 351 or equivalent) sites only, use an appropriate liner on bottot boom. Choking Layer Lay a 2 to 4 inch layer of sand over a 2 inch layer of choker stone (typically #8 or #89 washed gravel), which is laid over the underdrain stone. Stone Jacket for Underdrain 1 inch stone should be double -washed 12 inches for the underdrain; and/or Storage and clean and free of all fines (e.g., 12 to 18 inches for the stone storage layer, Layer VDOT #57 stone). if needed Use 6 inch rigid schedule 40 PVC pipe Lay the perforated pipe under the length of Underdrain, (or equivalent corrugated HOPE for the bioretention cell, and install non- Cleanouts, and micro-bioretention), with 3/8-inch perforated pipe as needed to connect with Observation perforations at 6 inches on center; the storm drain system. Install T's and Y's Wells position each underdrain on a 1% or as needed, depending on the underdrain 2% slope located nor more than 20 feet configuration. Extend cleanout pipes to the from the next pipe. surface with vented caps at the Ts and Ys. Plant one tree per 250 square feet (15 Establish plant materials as specified in the feet on -center, minimum 1 inch landscaping plan and the recommended caliper). plant list. Shrubs a minimum of 30 inches high In general, plant spacing must be sufficient planted a minimum of 10 feet on- to ensure the plant material achieves 80% Plant Materials center. cover in the proposed planting areas within Plant ground cover plugs at 12 to 18 a 3-year period. If seed mixes are used, they should be from inches on -center; Plant container- a qualified supplier, should be appropriate grown plants at 18 to 24 inches on- for stormwater basin applications, and center, depending on the initial plant should consist of native species (unless the size and how large it will grow. seeding is to establish maintained turf). CLEANOUT Soil porosity is the fraction of a volume of soil material that is not solid, also referred to as the void space. As the volume of fines, defined as either clay particles (less than 2 microns, or 0.002 min) or silt particles (between 2 and 50 microns, or 0.002 and 0.05 min) within a given soil mix is increased, there is a possibility that those fines may be flushed or migrate downward through the soil mix with each runoff event and eventually fill or otherwise clog the void space randomly throughout the mix and create preferential flow paths. In the short term this can lead to short circuiting and reduced volume reduction and pollutant removal, and in the long term may clog the soil layer. This tendency is offset by addition and maintenance of appropriate amounts of soil organic matter which binds soil fines into larger non -mobile aggregates. 3" HARDWOOD BARK MULCH • General Filter Media Physical Composition. The mineral soil texture of the bioretention soil BOTTOM ELEV 680.25 mix should be loamy coarse sand with no more than 10% clay, no more than 20% silt + clay 36" BIOFILTER MIX and at least 75% of the sand fraction should be coarse or very coarse sand. BOTTOM ELEV 677.2E 3" NO. 8 STONE • To allow for appropriate Cation Exchange Capacity (CEC) and nutrient removal, the mix TOP ELEV 677.00 should contain at least 10% soil fines (silt + clay) while meeting the overall texture 15" NO. 57 STONE specification above. The particle size analysis must be conducted on the mineral fraction only or following appropriate treatments to remove organic matter before particle size analysis. CLEANOU • The Filter Media should contain 3% to 5% organic matter conventional Walkley-BSEE lack soil DETAIL SHEET C1.1 T organic matter determination method or similar analysis. Soil organic matter is expressed on a dry weight basis and does not include coarse particulate (visible) components. 4" PERFORATED Version 2.0, January 1, 2013 Page 25 of 62 1r/_111161b] Wiifff_A 14AI] =1.91e]167]x lly197_111tl•]7: t•]E+ 71•] 0 =119 411 ire] 11 • The overall particle size distribution of the mix will vary since the sand fraction may contain some finer sizes as will native topsoils if utilized. As stated previously, the goal of the mixture is to achieve the desired constant head permeability. Therefore, the filter media composition noted above serves as the target recipe for the three ingredients, while the ultimate performance goal is to achieve a verified soil permeability or hydraulic conductivity (Ksat) of 1 to 2 inches per hour (or 30 to 60 cm/day). • The following is the recommended composition of the three media ingredients g wit °` opdpl�J• . l Components Frame Angle Bottom Woven/Welded Min. Mesh Opening Size Low Flow -See BMP-See 6-1604.6B, 8C 6-1604.8B, 8C 4" 1" Trash Rack General Notes: Additional Notes - 3' minimum trash rack width is required where available. Trash Racks 60" and wider: - Trash rack/mounting components to be - Large trash racks may be painted with Hot -dip galvanized. dark anti -corrosive paint, in lieu of - All mounting hardware to be stainless steel galvanizing. and threads to be coated in anti-sieze. - Additional structural reinforcements to be - Minimum % " x 3 " mounting bolts to be added to trash rack frame as deemed used for trash rack. necessary to support all anticipated loads. - Trash racks to be mounted using top hinge or - A 3' x 3' (min) access door with locking aide pin connection as per details shown in Plate mechanism to be installed on front face. 45B-6. All hinged/pinned trash racks to have locking mechanism. Mechanism to be installed Trash Racks mounted on Headwalls: on the upper half to minimize potential to - In case of apace restrictions at headwalls, become inaccessible due to submergence under water/sediment. use 2' min width of trash rack. - Mesh opening size to be Yz of the - Add wire mesh on the back of trash rack diameter/width of orifice being protected, but to the top of headwall as shown in Plate not smaller than minimum mesh opening size 45B-6. provided in table above. LOW FLOW ORIFICE DEBRIS CAGE DETAIL NO SCALE o Sand shall consist of silica based coarse aggregate, angular or round in shape and meet the mixture grain size distribution below. No substitutions of alternate materials such as diabase, calcium carbonate, rock dust or dolomitic sands are accepted. In particular, mica can make up no more than 5% of the total sand fraction. The sand fraction may also contain a limited amount of particles > 2.0 min and < 9.5 min per the table below, but the overall sand fraction must meet the specification of >75% being coarse or very coarse sand. Sieve Size % Passing 3/8 in 9.50 min 100 No. 4 4.75 nun 95 to 100 No. 8 2.36 min 80 to 100 No. 16 1.18 min 45 to 85 No. 30 0.6 min 15 to 60 No. 50 0.3 min 3 to 15 No. 100 0.15 rpm 0 to 4 Effective Particle size (D10) > 0.3min Uniformity Coefficient (D60/D 10)<4.0 o Topsoil is generally defined as the combination of the other ingredients referenced in the bioretention soil media: sand, fines (silt and clay), and any associated soil organic matter. Since the objective of the specification is to carefully establish the proper blend of these ingredients, the designer (or contractor or materials supplier) must carefully select the topsoil source material in order to not exceed the amount of any one ingredient. Generally, the use of a topsoil defined as a loamy sand, sandy loam, or loam (per the USDA Textural Triangle) will be an acceptable ingredient and in combination with the other ingredients meet the overall performance goal of the soil media. o Organic matter materials used in the soil media mix should consist of well - decomposed natural C-containing organic materials such as peat moss, humus, compost (consistent with the material specifications found in Design Specification #4 Compost Soil Amendments), pine bark fines or other organic soil conditioning material. However, per above, the combined soil mix should contain 3% to 5% soil organic matter on dry weight basis (grams organic matter per 100 grams dry soil) by the Walkley-Black method or other similar analytical technique. BMP PRACTICE DOCUMENTATION NOTE: Extend mesh from the top Apron General Notes: of the headwall to top of • 6" - 21a compacted to a minimum 95% rack of standard proctor (ASTM-618) with filter fabric to be placed under the teadwall rate removed for clarity. apron. (See details on Plate • Extend apron to wing -walls, in cases 45A-6) where wing -walls are part of the design. • Apron to be tied in to the riser/headwall o and wing -walls with rebar. ° ///12" OC #6 Rebar • Concrete to be Class A-4. 1'6"� /each way • All reinforcing steel to meet the current / requirements of ASTM Spec. A-615. 6" thick concrete V-6" apron extending oncrete apron entire width of the J_ (see notes) structure 5' (min) Trash Rack on Headwall Plate bolted to Pipe welded t min Ys " clearance around at, Pipe welded to trash min clearance around steel " Min steel rod Mounting hole for Yg " bolt SIDE PIN DETAIL plate bolted to riser Pipe welded to trash rack m " Mounting hole for i� " bolt min clearance around steel rod Y Min steel rod Pipe welded to trash rack Pipe welded to plate 3" min Ye " clearance around steel rod min Ye " clearance around steel rod TOP HINGE DETAIL DEBRIS CAGE MOUNTING DETAILS NO SCALE CONTRACTOR SHALL NOTIFY THE TIMMONS GROUP PRIOR TO COMMENCEMENT OF CONSTRUCTION OF BMP PRACTICES INCLUDING THE THREE BIORETENTION FILTERS AND THE STORMTECH DETENTION SYSTEM WITH ISOLATOR ROW. A SPECIFIC PRECONSTRUCTION MEETING BETWEEN THE CONTRACTOR, ENGINEER, INSPECTOR, AND MANUFACTURER IS HIGHLY RECOMMENDED PRIOR TO INSTALLATION OF THESE PRACTICES TO ENSURE THESE PRACTICES ARE NOT ONLY INSTALLED CORRECTLY BUT ALSO DOCUMENTED THROUGHOUT CONSTRUCTION. IT IS THE CONTRACTORS SOLE RESPONSIBILITY TO DOCUMENT THE INSTALLATION OF THESE PRACTICES AND IF THEY PROCEED WITH DOING SO IT IS DONE AT THEIR OWN RISK. CONTRACTOR SHALL TAKE NOTES, PICTURES, AND MEASUREMENTS OF ALL STRATA LAYERS WITHIN THE BIORETENTION FACILITIES DURING CONSTRUCTION. IT IS HIGHLY RECOMMENDED TO TAKE PICTURES OF EACH MEASUREMENT OF EACH STRATA LAYER OF EACH FACILITY. WITHOUT DOCUMENTING TO THIS LEVEL OF DETAIL THE CONTRACTOR RUNS THE RISK OF DIGGING THE FACILITIES BACK UP TO PROVE THE CORRECT SECTIONS WERE INSTALLED. I� Outlet Pipe overflow Orifices - 24" NYLOPLAST BASIN WITH DOME GRATE TOP = 681.00 RAMP SOIL TO LIP OF OVERFLOW STRUCTURE MIN SLOPE 3:1 BOTTOM OF BIORETENTION BASIN 680.50 ELEV.675.75 SCHEDULE40 MIRAFI 140N FILTER PVC UNDERDRAIN FABRIC OR EQUIVALENT. DAYLIGHTED ON SITE TO BE 2' WIDE SEE SHEET C5.0 CENTERED ON UNDERDRAIN NOTES 1. 36" BIOFILTER MEDIA DEPTH SHALL BE THE MINIMUM DEPTH AFTER A SETTLING PERIOD OF THREE DAYS. BIORETENTION FILTER 2A DETAIL (LEVEL 2) NO SCALE � J 24" NYLOPLAST BASIN WITH DOME GRATE CLEANOUT TOP = 685.75 RAMP SOIL TO LIP OF OVERFLOW STRUCTURE MIN SLOPE 31 "'j BOTTOM OF BIORETENTION BASIN 685.25 3" HARDWOOD BARK MULCH BOTTOM ELEV 685.00 36" BIOFILTER MIX BOTTOM ELEV 682.00 3" NO. 8 STONE BOTTOM ELEV 681.75 15" NO. 57 STONE 15" HDPE V. OUT = 681 ELEV.680.75 SEE CLEANOUT DETAIL SHEET C1.1 4"PERFORATED SCHEDULE40 PVC UNDERDRAIN TO BE 2' WIDE CENTERED ON UNDERDRAIN NOTES 1. 36" BIOFILTER MEDIA DEPTH SHALL BE THE MINIMUM DEPTH AFTER A SETTLING PERIOD OF THREE DAYS. BIORETENTION FILTER 2C DETAIL (LEVEL 2) NO SCALE CLEANOUT 3" HARDWOOD BARK MULCH BOTTOM ELEV 683.25 36" BIOFILTER MIX BOTTOM ELEV 680.25 3" NO. 8 STONE BOTTOM ELEV 680.00 15" NO. 57 STONE 310 24" NYLOPLAST BASIN WITH DOME GRATE TOP = 684.00 RAMP SOIL TO LIP OF OVERFLOW STRUCTURE MIN SLOPE 3:1 BOTTOM OF BIORETENTION BASIN 683.50 SEE CLEANOUT ELEV.678.75 DETAIL SHEET C1.1 4" PERFORATED SCHEDULE40 PVC UNDERDRAIN MIRAFI 140N FILTER FABRIC OR EQUIVALENT. TO BE 2' WIDE CENTERED ON UNDERDRAIN NOTES 1. 36" BIOFILTER MEDIA DEPTH SHALL BE THE MINIMUM DEPTH AFTER A SETTLING PERIOD OF THREE DAYS. BIORETENTION FILTER 3A DETAIL (LEVEL 2) NO SCALE I C 31A inch Holes OR APPROVED EQUAL ` Aluminum Fkd Washer (6 Places) B 1.75 in x 25 In Slainless Steel Screw (6 Places) Plastic Wall Anchor (6 Places) TRASHGUARD DETAILS SIZES 23" 28" 34" 0 MEE 3/8 inch Holes ACFTRASHGUARD STANDARD DETAIL FOR , FLAT BOTTOM CATCH BASINS 40 1-800-448-3636 PRETREATMENT DEVICE BIOFILTER 2C - INSTALL IN STIR 238 OVER EXITING PIPE 237 NO SCALE V M 1) 0 VMDO Architects vmdo.com 434.296.5684 200 E Market Street 2000 Pennsylvania Ave NW Ste 7000 Charlottesville, VA 22902 Washington, DC 20006 •0,••0 0.. TIMMONS GROUP YOUR VISION ACHIEVED THROUGH OURS. • bemarle County Public Schools ALBEMARLE COUNTY PUBLIC SCHOOLS CROZET ELEMENTARY SCHOOL ADDITION, RENOVATION AND SITE IMPROVEMENTS 1407 Crozet Avenue, Crozet, VA 22932 VDOE Project Number 002-34-00-101 VMDO Project Number 1284 v 11fyaII Uc. No. 53741 Checked By Designed By Drawn By B. CICHOCKI K. ROESER K. ROESER ISSUES AND REVISIONS NO. SUBMITTAL DATE 1 FINAL SITE PLAN & WPO PLAN SUBMISSION 10.AUG.2020 2 FINAL SITE PLAN RESUBMISSION #1 25.NOV.2020 3 WPO PLAN RESUBMISSION #1 02.DEC.2020 4 FINAL SITE PLAN & WPO PLAN SUBMISSION 05.FEB.2021 5 SIGNATURE SET 18.MAR.2021 6 WPO AMENDMENT #1 28.MAY.2021 7 WPO AMENDMENT #2 24.AUGUST.2022 8 MINOR SITE PLAN AMENDMENT #1 24.AUGUST.2022 STORMWATER MANAGEMENT QUALITY C6m2 Trash Rack Widthd Iron Flat Steel Wire Mesh Steel Rod For Grate up to 36" 1'/..X1'/..�4" �22"X2r"2x%4" l;¢"�4" y4.. between 86"-60" 2"74/4` %" 60" and larger 3"X3'X%' a'X%" Drainage Area A Drainage Area A Land Cover (acres) A Soils B Soils C Soils D Soils Totals Land Cover Rv Forest/Open Space (acres) 0.00 0.00 Managed Turf (acres) 0.09 0.09 0.20 Impervious Cover (acres) 0.03 0.03 0.95 Total 0.12 Drainage Area B Drainage Area A Land Cover (acres) A Soils B Soils C Soils D Soils Totals Land Cover Rv Forest/Open Space (acres) 0.00 0.00 Managed Turf (acres) 1.50 1.50 0.20 Impervious Cover (acres) 1.95 1.95 0.95 Total 3.45 Total Phosphorus Available for Removal in D.A. A (lb/yr) 0.11 Post Development Treatment Volume in D.A. A (ft3) 169 'otal Phosphorus Available for Removal in D.A. B (lb/yr) 4.91 Post Development Treatment Volume in D.A. B (ft) 7,814 6.a. Bioretention #1 or Micro-Bioretention #1 40 0 0 0 0 25 0.00 0.00 0.00 0.00 or Urban Bioretention (Spec #9) 6.b. Bioretention #2 or Micro-Bioretention #2 80 0.43 0.33 1,379 2,264 566 2,830 50 0.52 0.91 1.29 0.14 (Spec #9) 14. Manufactured Treatment Devices (no RR) 14.a. Manufactured Treatment Device 0 0 0 0 0 20 0.00 0.00 0.00 0.00 Hydrodynamic 14.b. Manufactured Treatment Device -Filtering 0 0.40 0 0 1,379 1,379 40 0.00 0.87 0.35 0.52 14.c. Manufactured Treatment Device -Generic 0 0.61 1.22 0 0 4,650 4,650 40 0.00 2.92 1.17 1.75 Drainage Area C CLEAR BMP AREAS Drainage Area A Land Cover (acres) A Soils B Soils C Soils D Soils Totals Land Cover Rv Forest/Open Space (acres) 0.00 0.00 Managed Turf (acres) 0.63 0.63 0.20 Impervious Cover (acres) 0.72 0.72 0.95 Total 1.35 4.a. Grass Channel A/B Soils (Spec #3) 4.b. Grass Channel C/D Soils (Spec #3) 4.c. Grass Channel with Compost Amended Soils as per specs (see Spec #4) 6.a. Bioretention #1 or Micro-Bioretention #1 or Urban Bioretention (Spec #9) 6.b. Bioretention #2 or Micro-Bioretention #2 (Spec #9) 14.a. Manufactured Treatment Device - Hydrodynamic 14.b. Manufactured Treatment Device- Filtering 14.c. Manufactured Treatment Device -Generic Drainage Area D Drainage Area A Land Cover (acres) Forest/Open Space (acres) Managed Turf (acres) Impervious Cover (acres) Fotal Phosphorus Available for Removal in D.A. C (lb/yr) 1.85 Post Development Treatment Volume in D.A. C (ft3) 2,940 TOTAL IMPERVIOUS COVER TREATED (ac) 0.00 AREA CHECK: OK. TOTAL MANAGED TURF AREA TREATED (ac) 0.00 AREA CHECK: OK. TOTAL RUNOFF REDUCTION IN D.A. A (ft3) 0 TOTAL PHOSPHORUS AVAILABLE FOR REMOVAL IN D.A. A (lb/yr) 0.11 TOTAL PHOSPHORUS REMOVED WITH RUNOFF REDUCTION PRACTICES IN D.A. A (lb/yr) 0.00 TOTAL PHOSPHORUS REMAINING AFTER APPLYING RUNOFF REDUCTION PRACTICES IN D.A. A (lb/yr) 0.11 SEE WATER QUALITY COMPLIANCE TAB FOR SITE COMPLIANCE CALCULATIONS TOTAL IMPERVIOUS COVER TREATED (ac) 1.95 AREA CHECK: OK. TOTAL MANAGED TURF AREA TREATED (ac) 1.04 AREA CHECK: OK. TOTAL PHOSPHORUS REMOVAL REQUIRED ON SITE (lb/yr) 2.74 TOTAL PHOSPHORUS AVAILABLE FOR REMOVAL IN D.A. B (lb/yr) 4.91 TOTAL PHOSPHORUS REMOVED WITHOUT RUNOFF REDUCTION PRACTICES IN D.A. B (lb/yr) 1.51 TOTAL PHOSPHORUS REMOVED WITH RUNOFF REDUCTION PRACTICES IN D.A. B (lb/yr) 1.29 TOTAL PHOSPHORUS LOAD REDUCTION ACHIEVED IN D.A. B (lb/yr) 2.80 TOTAL PHOSPHORUS REMAINING AFTER APPLYING BMP LOAD REDUCTIONS IN D.A. B (lb/yr) 2.11 6.1b. Bioretention #2 SEE WATER QUALITY COMPLIANCE TAB FOR SITE COMPLIANCE CALCULATIONS NITROGEN REMOVED WITH RUNOFF REDUCTION PRACTICES IN D.A. B (lb/yr) 11.69 NITROGEN REMOVED WITHOUT RUNOFF REDUCTION PRACTICES IN D.A. B (lb/yr) 0.00 TOTAL NITROGEN REMOVED IN D.A. B (lb/yr) 11.69 20 0.13 0.14 0 115 462 577 15 0.00 0.36 0.12 0.25 6.b. Bioretention #2 TOTAL IMPERVIOUS COVER TREATED (ac) k__1.67 AREA CHECK: OK. TOTAL MANAGED TURF AREA TREATED (ac) 0.13 AREA CHECK: OK. 10 0 0 0 0 15 0.00 0.00 0.00 0.00 TOTAL PHOSPHORUS REMOVAL REQUIRED ON SITE (lb/yr) 2.74 20 0 0 0 0 15 0.00 0.00 0.00 0.00 TOTAL PHOSPHORUS AVAILABLE FOR REMOVAL IN D.A. C (lb/yr) 1.85 TOTAL PHOSPHORUS REMOVED WITHOUT RUNOFF REDUCTION PRACTICES IN D.A. C (lb/yr) 0.46 40 0 0 0 0 25 0.00 0.00 0.00 0.0o TOTAL PHOSPHORUS REMOVED WITH RUNOFF REDUCTION PRACTICES IN D.A. C (lb/yr) 0.34 80 462 369 92 462 50 0.25 0.00 0.22 0.02 TOTAL PHOSPHORUS LOAD REDUCTION ACHIEVED IN D.A. C (lb/yr) 0.80 TOTAL PHOSPHORUS REMAINING AFTER APPLYING BMP LOAD REDUCTIONS IN D.A. C (lb/yr) 1.05 0 0 0 0 0 20 0.00 0.00 0.00 0.00 SEE WATER QUALITY COMPLIANCE TAB FOR SITE COMPLIANCE CALCULATIONS 0 0 0 0 0 20 0.00 0.00 0.00 0.00 0 0.53 0 0 1,828 1,828 40 0.00 1.15 0.46 0.69 A Soils B Soils 0.40 0.09 C Soils D Soils Total Totals Land Cover Rv 0.00 0.40 0.09 0.49 Site Results (Water Quality Compliance) Area Checks FOREST/OPEN SPACE (ac) IMPERVIOUS COVER (ac) IMPERVIOUS COVER TREATED (ac) MANAGED TURF AREA (ac) MANAGED TURF AREA TREATED (ac) AREA CHECK 0.00 0.20 0.95 TOTAL IMPERVIOUS COVER TREATED (ac) 0.00 AREA CHECK: OK. TOTAL MANAGED TURF AREA TREATED (ac) 0.00 AREA CHECK: OK. TOTAL RUNOFF REDUCTION IN D.A. D (ft3) 0 TOTAL PHOSPHORUS AVAILABLE FOR REMOVAL IN D.A. D (lb/yr) 0.38 TOTAL PHOSPHORUS REMOVED WITH RUNOFF REDUCTION PRACTICES IN D.A. D (lb/yr) 0.00 TAIL PHOSPHORUS REMAINING AFTER APPLYING RUNOFF REDUCTION PRACTICES IN D.A. D (lb/yr) 0.38 'otal Phosphorus Available for Removal in D.A. D (lb/yr) 0.38 Post Development Treatment Volume in D.A. D (ft3) 601 SEE WATER QUALITY COMPLIANCE TAB FOR SITE COMPLIANCE CALCULATIONS BIORETENTION SIZING COMPUTATIONS D.A. A D.A. B D.A. C D.A. D D.A. E AREA CHECK 0.00 0.00 0.00 0.00 0.00 O K. 0.03 1.95 0.72 0.09 0.00 OK. 0.00 1.95 0.67 0.00 0.00 OK. 0.09 1.50 0.63 0.40 0.00 OK. 0.00 1.04 0.13 0.00 0.00 O K. OK. OK. OK. OK. OK. Site Treatment Volume (ft3) 13,1so Runoff Reduction Volume and TP By Drainage Area RUNOFF REDUCTION VOLUME ACHIEVED (ft3) TP LOAD AVAILABLE FOR REMOVAL (lb/yr) TP LOAD REDUCTION ACHIEVED (lb/yr) TP LOAD REMAINING (lb/yr) D.A. E TOTAL 0 2,264 485 0 0 2,748 0.11 4.91 1.85 0.38 0.00 7.24 0.00 2.80 0.80 0.00 0.00 3.60 0.11 2.11 1.05 0.38 0.00 3.64 NITROGEN LOAD REDUCTION ACHIEVED (lb/yr)ll 0.00 11.69 Total Phosphorus NOTE: FINAL POST -DEVELOPMENT TP LOAD (lb/yr) 8.26 SITE PROVIDES TREATMENT BEYOND THE REQUIRED TP LOAD REDUCTION REQUIRED (lb/yr) 2.95 LOAD REDUCTION TO ACCOUNT FOR THE REMOVAL OF TP LOAD REDUCTION ACHIEVED (lb/yr) 3.60 AN EXISTING BIORETENTION TREATING PARKING AREA. TP LOAD REMAINING 0b/yr): 4.67 THE REMOVAL OF THE EXISTING BIORETENTION REMAINING TP LOAD REDUCTION REQUIRED (lb/yr): 0.00 ** REQUIRES AN ADDITIONAL 0.64 LB/YR LOAD ** TARGET TP REDUCTION EXCEEDED BY 0.65 LB/YEAR * REDUCTION THUS 0.65 LB/YR OVER THE REQUIREMENT IS PROVIDED. SEE CALC. BOOK FOR FURTHER DETAILS. Total Nitrogen (For Information Purposes) THE OWNER RESERVES THE RIGHT TO APPLY THE POST -DEVELOPMENT LOAD (lb/yr) 59.10 SURPLUS TREATMENT OF 0.01 LB/YR TO OTHER NITROGEN LOAD REDUCTION ACHIEVED (lb/yr) 14.15 PROPERTIES WITHIN THE SAME HUC AND UNDER THE REMAINING POST -DEVELOPMENT NITROGEN LOAD (lb/yr) 44.96 SAME OWNERSHIP PER 9VAC25-870-69-A.5 Bioretention Filter "2A" Design Level 2 Soil Type B Drainage Area Rv Impervious= 0.4 0.95 Managed Turf Bio= 0.26 0.20 Forest= 0 0.03 Total Drainage Area= 0.66 Rv= 0.65 Impervious/pervious ratio 61% Water Quality Volume= 1960 CF (1.25*(Rv)(A) )/12 1.25 Tv From Upstream Practice= 512 CF Total Requred Volume Tv= 2472 CF Storage Depth (ft) Void Ratios Ponding Depth= 0.5 1 Depth of Media Filter= 3 0.25 Stone Sump Depth 1.25 0.4 Total Storage Depth= 1.75 FT Surface Area Minimum Req= 1413 SF Providedl 14741 SF Total Volume Provided I 2580 CF Forebay Volume Required Forebay Volume: 371 CF Forebay Dimensions: 18'x21' Provided Forebay Volume: 385 CF Bioretention Filter "2C" Design Level 2 Soil Type B Drainage Area Rv Impervious= 0.33 0.95 Managed Turf Bio= 0.17 0.20 Forest= 0 0.03 Total Drainage Area= 0.5 Rv= 0.70 Impervious/pervious ratio 66% Water Quality Volume= 1577 CF (1.25*(Rv) (A) )/ 12 1.25 Tv From Upstream Practice= 0 CF Total Required Volume Tv= 1577 CF Storage Depth (ft) Void Ratios Ponding Depth= 0.5 1 Depth of Media Filter= 3 0.25 Stone Sump Depth 1.25 0.4 Total Storage Depth= 1.75 FT Surface Area Minimum Req=J 901 SF Providedl 9801 SF Total Volume Provided 1 1715 CF Forebay Volume Required Forebay Volume: I 237 CF Forebay Dimensions: I n/a, circular Provided ForebayVolume:1 266 CF Bioretention Filter "3A" Design Level 2 Soil Type B Drainage Area Rv Impervious= 0.14 0.95 Managed Turf Bio= 0.13 0.20 Forest= 0 0.03 Total Drainage Area= 0.27 Rv= 0.59 Impervious/pervious ratio 52% Water Quality Volume= 721 CF (1.25*(Rv)(A))/12 1.25 Tv From Upstream Practice= -117 CF Total Requred Volume Tv= 604 CF Storage Depth (ft) Void Ratios Ponding Depth= 0.5 1 Depth of Media Filter= 3 0.25 Stone Sump Depth 1.25 0.4 Total Storage Depth= 1.75 FT Surface Area Minimum Req= 3451 SF Providedl 350 SF Total Volume Provided I 613 CF Forebay Volume Required Forebay Volume: 91 CF Forebay Dimensions: n/a Provided Forebay Volume: 92 CF V AA I VMDO Architects vmdo.com 434.296.5684 200 E Market Street 2000 Pennsylvania Ave NW Ste 7000 Charlottesville, VA 22902 Washington, DC 20006 TIMMONS GROUP YOUR VISION ACHIEVED THROUGH OURS. bemarle County Public Schools ALBEMARLE COUNTY PUBLIC SCHOOLS CROZET ELEMENTARY SCHOOL ADDITION, RENOVATION AND SITE IMPROVEMENTS 1407 Crozet Avenue, Crozet, VA 22932 VDOE Project Number 002-34-00-101 VMDO Project Number 1284 11fydII Lic. No. 53741 6/zoz , Checked By Designed By Drawn By B. CICHOCKI K. ROESER K. ROESER ISSUES AND REVISIONS NO. SUBMITTAL DATE 1 FINAL SITE PLAN & WPO PLAN SUBMISSION 10.AUG.2020 2 FINAL SITE PLAN RESUBMISSION #1 25.NOV.2020 3 WPO PLAN RESUBMISSION #1 02.DEC.2020 4 FINAL SITE PLAN & WPO PLAN SUBMISSION 05.FEB.2021 5 SIGNATURE SET 18.MAR.2021 6 WPO AMENDMENT #1 28.MAY.2021 7 WPO AMENDMENT #2 24.AUGUST.2022 8 MINOR SITE PLAN AMENDMENT #1 24.AUGUST.2022 STORMWATER MANAGEMENT QUALITY L BIORETENTION FILTER 2A NOTES: BIORETENTION FILTER 2C NOTES: BIORETENTION FILTER 3A NOTES: TWO FORMS OF PRETREATMENT PROVIDED TWO FORMS OF PRETREATMENT PROVIDED TWO FORMS OF PRETREATMENT PROVIDED BY GRAVEL FLOW SPREADER AND UPSTREAM BY GRAVEL FLOW SPREADER AND UPSTREAM BY GRAVEL FLOW SPREADER AND UPSTREAM BY ISOLATOR ROW OF STORMTECH BY AN ACF TRASH GUARD CATCH BASIN BY A GRASS SWALE DIRECTING THE DETENTION SYSTEM. FILTER. DRAINAGE AREA TO THE PRACTICE. C63