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HomeMy WebLinkAboutSUB201200129 Plan - Approved Road Plan and Comps. 2013-01-09f GENERAL NOTES 0 WNER: ENGINEER: TAX MAP NO.: MrUC: DD1=cC:DX/c: A7 to"_41 C:KIN4nDr: IMP 09400— 00— 00— 01500 SANSOVICH DEVELOPMENT, LLC CONTACT' NEAL SANSOVICH 2000 RED HILL ROAD CHARLOTTESVILLE, VA 22903 434-962-2150 COLLINS ENGINEERING 200 GARRETT STREET, SUI TE K CHARLOTTESVILLE, VA 22902 TELEPHONE: (434)293-3719 FAX: (434) 293-2813 CONTACT- SCOTT COLLINS, P.E. EMAIL: SCOTT@COLLINS—ENGINEERING.COM 09400-00-00-01500, 94-15B1, 94-15B2, 94-1583, & :94-15B4 AREA: 144.78 AC. ZONING: RA NO TE. • L 0 IS 1— 4 WERE RECEN TL Y RECORDED A T DB 4138 PG 339 ON FEBRUAR Y 24, 2012. USE: SINGLE—FAMIL Y RESIDENTIAL SUBDIVISION STREETS: PAVED ROADWAY WITH ROADSIDE DITCH TOPOGRAPHY- TOPOGRAPHY PROVIDED BY LICENSED LAND SURVEYORS, COMMONWEALTH LAND SURVEYING, LLC IN AUGUST 2012. BOUNDARY INFORMA WON PROVIDED BY COMMONWEALTH LAND SURVEYING IN 2011. VEGETA TION: ROLLING GRASS FIELD WITH EXISTING TREES WA TERSHED: MIDDLE RI VANNA RIVER WATERSHED UTILI TIES: THESE PARCELS ARE LOCATED OUTSIDE OF THE ACSA JURISDICTIONAL AREA. WA TER SHALL BE PROVIDED BY PRI VA TE WELLS AND PRI VA TE SEPTIC SYSTEMS SHALL BE PROVIDED ON INDIVIDUAL LOTS. WELLS AND SEPTIC SYSTEMS SHALL BE DESIGNED AND APPROVED PRIOR TO FINAL PLAT APPROVAL. THIS PROPERTY IS NOT LOCATED WITHIN AN AGRICULTURAL —FORESTAL DISTRICT. NORTH ARROW DETERMINATION: NAD 83 DENSITY.• PROPOSED: 13 LOTS/ 144.78 AC. = 0.09 DUA MAXIMUM ALLOWED: 0.5 DUA SETBACKS: FRONT (INTERNAL PRIVATE ROAD) 25' SIDE: 25' REAR: 35' MAXIMUM STRUCTURE HEIGHT- 35' STREAM BUFFER: 100' STREAM BUFFER(S) SHOWN HEREON SHALL BE MANAGED IN ACCORDANCE WITH THE ALBEMARLE COUNTY WATER PROTECTION Notes: ORDINANCE. 1.) LOTS 1-13 EACH CONTAIN A BUILDING SITE THAT COMPLIES WITH SECTION 4.2'. l OF THE ALBEMARLE COUNTY ZONING ORDINANCE. 2.) NOTE. • ORIGINAL TAX MAP 94 PARCELS 15 AND 16 EACH HAD 5 DEVELOPMENT RIGHTS .RASED ON 1980 BOUNDARIES. WITH SUB-2010-154 RECORDED AT DEED BOOK 4138, PAGE NUXIBER 339, NEW LOTS 1(TAX MAP 94-16B1), 2(TAX MAP 94-16B2), 3(TAX MAP 94-16B3), AND 4(TAX MAP 94-16B4) WERE EACH ASSIGNED A DEVELOPMENT RIGHT FROM THE ORIGINAL (5) DEVELOPMENT RIGHTS THAT BELONGED TO THE ORIGINAL TAX MAP 94 PARCEL 16, AND MAY NOT BE FURTHER DIVIDED. THE REMAINING DEVELOPMENT RIGHT ON ORIGINAL TAX MAP 94 AND PARCEL 16 IS BEING ASSIGNED TO LOT 5. THE AGGREGATE ACREAGE OF LOTS 1, 2, 31 41 AND 5, IS LESS THAN 31 ACRES. ORIGINAL TAX MAP 94 PARCEL 15 HAD 5 DEVELOPMENT RIGHTS, WHICH WERE ASSIGNED TO REVISED TAX MAP 94 PARCEL 15 AT D. B. 3863 PAGES 363-378. NEW LOTS 6, 7, 8, 9, AND 10, WILL EACH BE ASSIGNED A DEVELOPMENT RIGHT FROM THE REMAINING 5 DEVELOPMENT RIGHTS AND MAY NOT BE FURTHER DIVIDED. A MIN11MUM OF 2 ACRES FROM NEW LOT AGGREGATE ACREAGE OF LOTS 6, 7, 8, 9, AND 10 IS LESS THAN 31 ACRES. NEW LOTS 11, 12, AND 13 ARE EACH GREATER THAN 21 ACRES AND WILL NOT REQUIRE THE USE OF A DEVELOPMENT RIGHT. NO DEVELOPMENT RIGHTS REMAIN. 3.) LOT 6 CONTAINS 2.06 ACRES LOCATED WITHIN IMP 94-15 WHICH MEETS THE REQUIREMENT FOR A DEVELOPMENT RIGHT LOCATED IN IMP 94 15. A BOUNDARY LINE A DJU STMENT WILL BE PROCESSED WITH THE FINAL SUBDIVISION PLAT FOR THE CREATION OF LOT 6, I WI TH A MINIMUM ACREAGE OF 2 ACRES FROM IMP 94-15, AS SHOWN. 4.) CONCEPTUAL LOCATIONS OF STORMWATER MANAGEMENT FACILITIES ARE SHOWN. FINAL DESIGN SHALL BE INCLUDED WITH FINAL ROAD PLANS, PRIOR TO FINAL PLAT APPRROVAL. 5.) ALL LAND WITHIN THE SUBDIVISION SHALL BE CONTAINED WITHIN LOTS OR WITHIN THE PRIVATE RIGHT OF WAY. LOT ACREAGE. • 143.48 AC. PRI VA TE R/W ACREAGE: 1.27 AC. 6.) NO LOCATION OF ANY GRAVES OR OBJECTS OR STRUCTURES MARKING A PLAICE OF BURIAL ARE KNOWN AT THIS TIME TO BE LOCATED ON THE PROPERTY. Z) CRITICAL SLOPES ARE SHOWN ON THE PLAN IN ACCORDANCE WITH THE COUhV TY CIS MAPPING AND COUNTY TOPOGRAPHY. NO IMPACTS TO THE CRITICAL SLOPES ARE PROPOSED WITH THE DEVELOPMENT PLAN. 8.) THE LOTS SHALL BE SERVICED BY ON —SITE WELLS AND ON —SITE SEPTIC FIELDS. FINAL APPROVAL OF THE WELLS AND SEPTIC FIELDS WILL BE APPROVED BY THE VIRGINIA HEALTH DEPARTMENT PRIOR TO THE APPROVAL OF THE FINAL SUBDI VISION PLA T 9.) THE PROPOSED STREET IN THIS DEVELOPMENT PLAN SHALL BE A PRIVATE STREET, BUT BUILT TO VDOT STANDARDS, IN ACCORDANCE WITH THE GUIDELINES AND REQUIREMENTS OF ALBEMARLE COUNTY. THE STREET DOES NOT QUALIFY FOR A PUBLIC ROAD BECAUSE IT DOES NOT MEET ALL THE STANDARDS FOR ACCEPTANCE OF THE ROADWAY INTO THE SECONDARY SYSTEM OF STATE HIGHWAYS AND THEREFORE WILL NOT BE MAINTAINED BY THIE VIRGINIA DEPARTMENT OF TRANSPORTATION OR THE COUNTY OF ALBEMARLE. LEGEND SCOTTSVILLE DISTRICT ALBEMARLE COUNTY, VIRGINIA TM 9`} I9 ---J�/ //'�i� �/>1 �'�--__'--- .._•-"-- ``�..._ r / / l � iKNIGH , K�VN 4 (�jR DIANE 3.55 ACR S D.B.,P . ?�158\133 _ 1 // LOT' 0/ 4 - , \ \ PROFIT O�TI R NG,c �2.63�Z�E� D.B TG. 756/74 Fr X,_ ��i�//� III f � / l I� � p � / / / � I 1 1 �,• ��0�8\\ \ \ ,�� �`��,— -�� -� r/i%•� : � ��� o ., , M _ ULEN11ijORE SS(��IP`TES� hjED L T 9 __52�50 R RD� \\ 1 ` �- _ 400\� --D.B7PSa._30'j0% LOT 5 J I\ �, \\ �� ` \ // ZZ x�)g \ \\ SAS VIC D�VE LOP NT,44.7 Fr - \ AN OVI H ELOPM , L LOT 1 1 \ \ \ / i P 1 1 1 1 1 i r� 'C-\ALE_ _� \` -�60 Mv "01 �, I / %-- r8o rf L.l J l ail, l L_ I EXISTING CULVERT � EARTH DITCH CUL VERT DRIVEWAY CULVERT Q DROP INLET & STRUCTURE NO. BENCH MARK CURB — — CLEARING LIMITS CURB &GUTTER — — — PROPOSED PAVEMENT -�- VD(OT STANDARD STOP SIGN EC-3A DITCH — — — —200— — — — EXISTING CONTOUR 6» DEPTH OF EC-3A DITCH 200 PROPOSED CONTOUR EC-2 DITCH 240.55 PROPOSED SPOT ELEVATION TUC' DENOTES TOP/BACK OF CURB 6 • DEPTH OF EC-2 DITCH T/6I DENOTES TOP OF BOX SHEET LAYOUT SCALE: 1" = 150' CURRENT OWNER SANSOVICH DEVELOPEMENT, LLC 2000 RED HILL ROAD CHARLOTTESVILLE, VA 22103 ENGINEER COLLINS ENGINEERING 200 GARRETT STREET, SUITE K CHARLOTTESVILLE, VA 22902 434.293.3719 &0 OSED WAY SITE VICINITY MAP SCALE: 1" - 2000' SP-2006-03ICON DITIONIS OF APPROVAL: 1) THE STREAM CROSSING SHALL BE BUILT IN ACCORDANCE WITH THE PLAN TITLED "SP 06-31 APPLICATION PLAN, "REVISED "AUGUST 01, 2007," AND PREPARED BY ROUDABUSH, GALE, & ASSOCIATES, INC. 2) ANY SUBDIVISION ON THE PORTION OF THE PROPERTY DESIGNATED AS RURAL AREAS IN THE COMPREHENSIVE PLAN SHALL BE DESIGNED IN GENERAL ACCORD WITH THE PLAN TITLED GLENOAKS, DATED "8/1/07", AND PREPARED BY "KG ASSOCIATES." THE DEVELOPMENT LOFTS EAST OF LIMESTONE CREEK AND LOT 26 SHALL BE DEVELOPED AS RURAL PRESERVATION DEVELOPMENT IN ACCORD WITH SECTION 10.3.3.3 OF THE ZONING ORDINANCE, WITH LOT 26 AS THE PRESERVATION TRACT. AS PART OF THE SAME SUBDIVISION, THE APPLICANT SHALL CONVEY TO THE COUNTY A PORTION OF LOT 10 (WHOSE BOUNDARIES ARE APPROVED BY PARKS AND RECREATION DEVELOPMENT) FOR USE AS GREENWAY. 3) THE DAM SHALL ALLOW FOR CONTINUATION OF THE BAS FLOW IN THE STREAM; AND 4) THE FOLLOWING CONDITIONS SHALL BE MET PRIOR TO ISSUANCE OF A GRADING PERMIT TO ALLOW INSTILLATION OF THE STREAM CROSSING OR SUBMITTAL OF THE FINAL SUBDIVISION PLAT, WHICHEVER COMES FIRST. A) THE APPLICANT MUST OBTAIN A MAP REVISION, LETTER OF REVISION, OR A LETTER OF AMENDMENT AS REQUIRED FROM THE FEDERAL EMERGENCY MANAGEMEivTAGENCY (FEMA) AND COPY THE COUNTY ENGINEER ON ALL CORRESPONDENCE BETWEEN THE APPLICANT AND FEMA. B) COUNTY APPROVAL OF AN EROSION AND SEDIMENT CONTROL PLAN FOR THE STREAM CROSSING. C) COUNTY APPROVAL OF THE FINAL LANE CONFIGURATION OVER THE STREAM CROSSING WITH THE FINAL ROAD PLANS. D) NATURAL RESOURCES MANAGER APPROVAL OF A STREAM BUFFER MITIGATION PLAN IN GENERAL ACCORD WITH THE CONCEPTUAL PLAN SHOWN ON THE PLAN TITLED "SP 06-31 APPLICATION PLAN," REVISED "AUGUST 01, 2007," AND PREPARED BY ROUDABIUSH, GALE & ASSOCI,ATED, INC. E) COUNTY APPROVAL OF FINAL DESIGN PLANS AND HYDROLOGIC/HYDRAULIC COMPUTATIONS FOR THE STREAM CROSSING. F) ARMY CORP' OF ENGINEERS, VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY, AND OTHER NECESSARY STATE AND AGENCY APPROVALS,MUST BE OBTAINED FEDERAL AG PRIOR TO ISSUANCE OF GRADING PERMITS, AND G) APPROVAL OF THE FINAL DESIGN OF THE DAM BY THE DEPARTMENT OF CONSERVATION AND RECREATION, AS NECESSARY. PRIOR TO FINAL PLAT APPROVAL OF THE PRIVATE ROAD 5) PR R A ACROSS THE CREEK, THERE SHALL BE A PRIVATE ROAD MAINTENANCE ""'AGREEMENT THAT- INCLUDES PROVISIONS FOR MAINTENANCE, REPAIR AND FUTURE REPLACEMENT OF DAM, WHEN NECESSARY, IN A FORM ACCEPTABLE TO THE COUNTY AS APPROVED BY THE COUNTY ATTORNEY. ALL COSTS OF THIS MAINTENANCE OR REPAIR AGREEMENT SHAUL BE PRIVATELY FUNDED. THE LANDOWNER'S PRIVATE RESPONSIBILITY FOR DAM MAINTENANCE OR REPAIR SHALL BE STATED IN EVERY DEED TRANSFERRING OWNERSHIP OF THE LOTS SERVED BY THIS CROSSING IN A STATEMENT APPROVED IN FORM AND CONTENT BY THE COUNTY ATTORNEY. THE COUNTY SHALL NOT BE RESPONSIBLE FOR ANY COSTS OF THE MAINTENANCE, REPAIR, OR FUTURIE REPLACEMENT OF THE PRIVATE ROAD OR DAM. * THE GLEN OAKS STREAMA CROSSING IS NOT BEING PURSUED, THEREFORE THESE CONDITIONS ARE NO LONGER APPLICABLE. APPROV 0 by the Albernarle County SHEET INDEX �;f� ��_ �lty - Z-0 Department i"lie _�j � b, Zo 12 0C, j z CI TITLE SHEET TITLE SHEET 1 EXISTING CONDITIONS 2 ROAD PLAN & PROFILE 3 SITE PLAN DETAILS 4 DRAINAGE ANALYSIS 5 DRAINAGE PROFILES & CALCULATIONS 6 EROSION & SEDIMENT CONTROL NARRATIVE 7 EROSION & SEDIMENT CONTROL PLAN 8 EROSION & SEDIMENT CONTROL NOTES & DETAILS 9 STORMWATER MANAGEMENT PLAN 10 STORMWATER MANAGEMENT DETAILS & CALCULATIONS 11 TOTAL SHEETS 11 APPROVALS DATE DEPAR'I'tV1ENT OF COMMUNITY DEVELOPMENT PLANNER/ZONING ENGINEER INSPECTIONS ARB DEPARTMENT OF FIRE RESCUE ALBEMARLE COUNTY SERVICE AUTHORITY VIRGINIA DEPARNIENT OF TRANSPORTATION HEALTH DEPARTMENT COLLINS ENGINEERING IS NOT RESPONSIBLE OR LIABLE FOR ANY CONSTRUCTION OR DAMAGES TO THIS PROJECT PRIOR TO ALL FINAL PLAN APPROVALS. /— THOF� SCOTT R. 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H R. 115 845 .! / ` - . T °� ~- — / \ \ / / / \\ � / /// \�' /// � �\\\`� — -'` / / �( /� NOTES: 1 \\. - \ - y'- / J \\\\ // /// // / / \/ �/-- - . _� f /-- / ACRES (�� \� /I 1 T�'�"=-,- �- ��, l e / ` = \ .\ — -- `� 1 �I \ �' / / "� / r �'� / \ /, ' _ONE? ��° ( // �/ 1. TOPOGRAPHY PROVIDED BY LICENSED LAND SURVEYOR COMMONWEALTH LAND SURVEYING, LLC IN �- -- / �r \ ` \ — — — -� - / / -J //ll /�x j � /�/z-/ l � `- J/ \- i -Z RA/ f d)���J /I (R\ ` ' 4 f °° \ — _ -\ ) I I' \\\\ -.` ` - LIM�T F WPO BUFFER �� \ ✓�� /- D.B./PG. 3863/392 / /// AUGUST OF zosz. BOUNDARY INFORMATION PROVIDED BY COMMONWEALTH LAND SURVEYING IN zoss. �\ S / ` ;\ - \ JII \ �� \ / / / / \�'® % '- J / --� //�- //// 2. THE LIMITS OF THIS PROJECT DO NOT CONTAIN ANY 10o YEAR FLOOD PLAIN ELEVATIONS. SOURCE: FEMA /jam -` '- �, \ \ \ i \\ -��/ \ .�! _ - /� / / f / mac!/� ��^ _/ ��/ MAP #51oo3Co45oD, PANEL #o45oD. 4\ \� / / / / - \ / --- -- / \' '~r-��' - / / -"�%�j ///i --�1 3. THERE ARE NO CRITICAL SLOPE IMPACTS WITHIN THE PROJECT LIMITS. ! _ -- __� �� _ ' - --- \\ 11 '�� I (i I i �` ; ;\ ,-'/ / � @`\\.. a-10"//// ! - / _ _ f _�- %�'i�j�/i����/�� ��� 4. THERE ARE NO STREAM BUFFERS LOCATED WITHIN THE PROJECT LIMITS. :5 CL O a. 3: C6 0 0 I Lu 0 Lu < LLI l/Lu V ) Lu lc� 0. Lu r z 0 H 0 z 0 U 0 1--i w W JOB NO. 112054 SCALE 1 "=150' SHEET NO. 2 L 06 -aE Q)w mw 3z w CD nz - w 0 (1) z O J I_- J ,o U u, C U �, L 0 v QV) C 0 U U N a) ::� 6 L 3 3 �U) L 0 fl- 0 x U N :3Q) 0 Q. y:3 L 0 0)-s-- o� 3 0 rn C C >,-Y 0 O E" 0 0 C 0 o+ U � 3 �� C N J c v 0 7 U 5� 0 J \ f)_ 0 J 6 i C � ia T C 0 y -✓ 1 U - L 1 ",' y r- > U inU 3 0 U .'.' y�Ll C E �. a)- 0 U � � (D U .> DV) 3� U U y .- 71 7 ' U > 3 0 m 0 a-, D U C '- 0 3 U) U �N 3 U 0- N T I- 0 N N r*�Ln -4o O N CA it HIGH PT STA: 15+50.00 HIGH PT E(EV: 395.10 PVI STA:16+00.00 PVI ELEV:394.77 AD: - i .34% K:293.73 LVC:1100.00 _ S.S.DI=797' o0 oti NG GRADE o rn + cf) 00 it1 -1.00% NOTE: ALL ROADWAY gMBANKMEN�T MATERIAL SHALL(_ T PREDOMINATELY OF S?IL AND BE PLACED IN SUCCESSIVE UNIFORM-�P�YER-S-N&-T MORE -THAN 8-tNCHESIN�T-HtCKNE BEFORE COMPACTION VER THE ENTIRE ROADED AREA IN ACCORDANCE WITH VDOT 2007 ROAD AND BRIDGE SPECIFICATION 303.04 LOW PT E4EV: 392.52 PVI STA: 8+50.00 PVI ELE :392.27 AD: �-00% K:5Q.00 uVc foo:oo S.S.D!=253' NOTE: 1. ALL FILIr TO BE PLACED AT 95% COM (ACTION. oti oco rnw 1.00% 415 4101 4051 3951 41.6111111' 3851 SCOTT R. COLLINSt2� No. 35791 ZONAL E I�— Z z LU O H a O �U--.. W (f) Z zU z o � J Q 0� LU d LU 0 '~' Z V) W Uj M� M m C•7 M M M c�M ch m co cf) M ce) V) m � M 10+00 10+50 11+00 11+50 12+00 12+50 13+00 13+50 14+00 14+50 15+00 15+50 16+00 16+50 17+00 17+50 18+00 18+50 19+00 19+50 20+00 20+50 21+00 GREY HERON ROAD VDOT STD. LOT 7 I I I I 1 / 1 , \ LOTS$\ \ \ \ �` ``` \ VDOT STD. EC-1, CL. II, 'NOTE: 4:1 SIDE SLOPES ALONG BANKS I \ \ \ \ ~ \ TYPE B RIP -RAP \ \ ` ~`-- -PROPOSED EXTENDED DETENTION BASIN /\ ` F THE PROPOSED ROADWAY \ ~ STORMWATER MANAGEMENT FACILITY \r (L-16 , W-10 , D-2) 360 \ 0 I / CONNECTION AS SHO N / � � ` \ \ \ \ `\ `\ \ � I I I I \ 1 358 �\ \\ SEE SWM PLAN FOR DESIGN INFORMATION PROPOSED R- , 1 \ t / 1 ' j� \ \ \ \ �\ \ / \\` 1 ON SHEETS 10 & 11 STOP SIGN 40 / I ` ROADSIDE I DITCH LINE10 I o.: , r96 — _ �� \ �` '�� EXISTING CRITICAL T::: ::.:::.:.:.:... 29 E7P - ::::':......:1.;..12+50:::'::::'::' :':':::.. \ ~` \'�- t 0 . ......... \ _ \ \ `� ` SLOPES TOR MAIN F�E.Y.. MR.O�. ROI- .o�.. OIN�3+5p`\: �` \ \- l \ \ VDOT STD. ROPOL.....�........... \1 S-1(STREET SIGN--_40 LVERT #1 VDOT STD. EC-1, CLA, \ --- `` \_ TYPE B RIP -RAP Q ePRZOPOSED 15 RCP W/ ''J \ \ ~` \ _ _ \ \\ I (L 21 , W 1-3.75 , W2 9.25 , D-2) I I y (1)I VDOT STD. EW-1 & Yl` (1)I VDOT STD. ES-1 y \ \ \ 39 \.: 0:.'.. �\ '�� \ VDOT�TD. ES W SEE DRAINAGE PLAN \ \ _ , \ \ \ �` �\ ` LOT 9\ \ \ ` t ' -I I \ t\ \ \ `\ FOR DESIGN INFORMATION' '` `o VDOif STD. EC-1, CL. 11, 1 \ O '' \ (TY6 E B RIP -RAP \ \ * \ \ , 10' GRASS SWM ' W1-3' W2-7' D-2' --- \ \ ACCESS PATH - J ROADSIDE � .::::.:\ �`, \ \ � \VDOT STD. EC-1, CL. II, GRADE SHALL / ` \ \ -, TYPE B RIP -RAP DITCH LINE \ ..:.:..:\:::jam \ ~� ' o ' 2 ' �I.� cCOfl , \ \ < - ` NOT EXCEED 10 /o \ W2-18.5 , D-2 EXISTING ` l' U ' ` '•` --_. � '.: '•.00� \ � \ � / � ' ' 3 I ,STREET I � /� � I �'\, / \ -_._ -� / sro :. \\ \ � � I � � � I � \ \ \ \`• \ `•.,. \ �° . Y HERON ROADGRE. I I I r✓ ' / %I I ` II_ I_ -,1 - \ V\D 4T\ STD.\ M\AN\H\O LE\ \ \ \ L O1\ Tangent Data \ \ '\ A I ' Length: 407.747 Cou4e: S 840 17' 53.4468" E ► \ ` \ Iw I 3 _ - -- LOT 5 NOTE: 4:1 Dircular Curve Data \ ` / SIDE SLOPES: elta: 67° 00' 16.7444`' . Type: RIGHT \ I ` pl 1- \ \ \ \ Radius: 350.000 \ 4 1 I �P'� ` VAR. WIDTI41 DRAINAGE &� EXISTING FIRE / / I (- Length:----409:30$, Tangent:` 231.680 ' / P�' 4 - \ CCESS EASEMENT HYDRANT I (I id -Ord: 58.14$ External: 69.733 ~ ` , ( ': � '''-� ~o•.. � �� `� VDO STD. DI- •. Chord: 386.380 Course: S 50 4� 45.0746 E �� �TD. ``VDDO D -u•. - VDOT STD. \ \ \ \ \ \ Tan ent Data-� _.--Length: 252.273 ~ ` Course: S`470 17' 36.7025"-E 6 CULVERT #2 EXISTING 12" D.I. / I \ ► �� VDO STD. -- -- WATERLINE \ \ CULVERT #2 0 ES-1 PROPOSED 12" RCP W/ 2 VDOT STD. ES- do `` -- -- _ - -- — -- - -- \ --- _ \. SEE DRAINAGE PLAN FOR DESIGN INFORMATION PROPOSED ROAD \ �OT 1�2 \ \ y \ \ \ l I I I ~ �_. RIGF T-OF-W :::::\Vil J D i L t D GENERAL CONSTRUCTION NOTES FOR STREETS 1. CONSTRUCTION INSPECTION OF ALL PROPOSED ROADS WITHIN THE DEVELOPMENT WILL BE MADE BY THE COUNTY. THE CONTRACTOR MUST NOTIFY THE DEPARTMENT OF COMMUNITY (DEVELOPMENT (296-5832) 48 HOURS IN ADVANCE OF THE START OF CONSTRUCTION. 2. UPON COMPLETION OF FINE GRADING AND PREPARATION OF THE ROADBED SUBGRADE, THE CONTRACTOR SHALL HAVE CBR TESTS PERFORMED ON THE SUBGRADE SOIL. THREE (3) COPIES (OF THE TEST RESULTS SHALL BE SUBMITTED TO THE COUNTY. IF A SUBGRADE SOIL CBR OF 10 OR GREATER IS NOT OBTAINABLE, A REVISED PAVEMENT DESIGN SHALL BE MADE BY THE DESIGN ENGINEER AND SUBMITTED WITH THE TEST RESULTS FO)R APPROVAL. J. SURFACE DRAINAGE AND PIPE DISCHARGE MUST BE RETAINED WITHIN THE PUBLIC RIGHT-OF-WAY OR WITHIN EASEMENTS PRIOR TO ACCEPTANCE BY THE COUNTY. ALL DRAINAGE OiUTFALL EASEMENTS ARE TO BE EXTENDED TO A BOUNDARY LINE OR A NA TERAL WA TERCOURSE. 4. GUARDRAIL LOCATIONS ARE APPROXIMATE. EXACT LENGTH, LOCATION AND APPROPRIATE END TREA TMIENTS WILL BE FIELD VERIFIED AT THE TIME OF CONSTRUCTION. ADDITIONAL GUARDRAIL (MAY BE REQUIRED AT LOCATIONS NOT SHOWN WHEN, IN THE OPINION OF THE COUNTY' ENGINEER, OR DESIGNEE, IT IS DEEMED NECESSARY. WHEN GUARDRAIL IS REQUIRED, l7 SHALL BE INSTALLED FOUR (4) FEET OFFSET FROM THE EDGE OF PAVEMENT YO THE FACE OF GUARDRAIL, AND ROADWAY SHOULDER WIDTHS SHALL BE INCREASED 'TO SEVEN (7) FEET. 5. WHERE URBAN CROSS SECTIONS ARE INSTALLED, ALL RESIDENTIAL DRIVEWAY ENTRANCES SHALL CONFORM TO VDOT CG-9(A, B OR C). 6. WHERE RURAL CROSS SECTIONS ARE INSTALLED, ALL RESIDENTIAL DRIVEWAY ENTRANCES SHALL CONFORM TO VDOT STANDARD PE-1. 7. COMPLIANCE WITH THE MINIMUM PAVEMENT WIDTH, SHOULDER WIDTH AND DITCH SECTIONS, AS SHOWN ON THE TYPICAL PAVEMENT SECTION DETAIL, SHALL BE STRICTLY ADHERED TO. 8. ROAD PLAN APPROVAL FOR SUBDIVISIONS IS SUBJECT TO FINAL SUBDIVISION PLAT VALIDATION. SHOULD THE FINAL PLAT FOR THIS PROJECT EXPIRE PRIOR TO SIGNING AND RECORDATION, THEN APPROVAL OF THESE PLANS SHALL BE NULL AND VOID. 9. ALL SIGNS OR OTHER REGULATORY DEVICES SHALL CONFORM WITH THE VIRGINIA MANUAL FOR UNIFORM TRAFFIC CONTROL DEVICES AND THE ALBEMARLE COUNTY ROAD NAMING AND PROPERTY NUMBERING ORDINANCE AND MANUAL. 10. TRAFFIC CONTROL OR OTHER REGULATORY SIGNS OR BARRICADES SHALL BE INSTALLED BY THE DEVELOPER WHEN, IN THE OPINION OF THE COUNTY ENGINEER, OR DESIGNEE, THEY ARE DEEMED NECESSARY IN ORDER TO PROVIDE SAFE AND CONVENIENT ACCESS. 11. THE SPEED ;LIMITS TO BE POSTED ON SPEED LIMIT SIGNS ARE 5 MPH BELOW THE DESIGN SPEED, OR AS DETERMINED BY VDOT FOR PUBLIC ROADS 12. VDOT STANDARD CD-1 OR CD-2 CROSS -DRAINS UNDER TO BE INSTALLED UNDER THE SUBBASE MATERIAL AT ALL CUT AND FILL TRANSITIONS AND GRADE SAG POINTS AS SHOWN ON THE ROAD PROFILES. 13. A VIDEO CAMERA INSPECTION IS REQUIRED FOR ALL STORM SEWERS AND CULVERTS THAT ARE DEEMED INACCESSIBLE TO VDOT OR COUNTY INSPECTIONS THE VIDEO INSPECTION SHALL BE CONDUCTED IN ACCORDANCE WITH VDOT'S VIDEO CAMERA INSPECTION PROCEDURE AND WITH A VDOT OR COUNTY INSPECTOR PRESENT. ROAD NOTES GRADING 1. THE LATEST EDITION OF THE ROAD & BRIDGE SPECIFICATIONS, THE ROAD & BRIDGE STANDARDS OF THE VIRGINIA DEPARTMENT OF TRANSPORTATION SPECIFICATIONS SHALL GOVERN THE MATERIAL AND CONSTRUCTION METHODS OF THIS PROJECT. 2. WHERE UNSUITABLE MATERIAL IS ENCOUNTERED IN THE ROAD WA Y, IT SHALL BE REMOVED FROM THE ENTIRE ROAD RIGHT OF WAY WIDTH AND REPLACED WHERE NECESSARY WITH SUITABLE MATERIAL TO THE SATISFACTION OF THE ENGINEER. 3. ALL GROWTH OF TREES AND VEGETATION SHALL BE CLEARED AND GRUBBED FOR THE ENTIRE EASEMENT. OTHER TREES AND VEGETATION WHICH OBSTRUCT SIGHT DISTANCES AT ROAD IMTERSECTIONS SHALL BE REMOVED. 4. ALL VEGETATION AND OVERBURDEN TO BE REMOVED FROM SHOULDER TO SHOULDER PRIOR TO THE CONSTRUCTION OF THE SUBGRADE. DRAINAGE 1. ALL PIPE CULVERTS, EXCEPT PRIVATE ENTRANCES, SHOWN HEREON ARE TO BE RCP WI TH A MINIMUM COVER OF ONE (1) FOOT. 2. STANDARD UNDERDRAINS (CD-1 OR CD-2 OR UD-4'S) TO BE PROVIDED AS INDICATED ON THE PLANS, OR WHERE FIELD CONDITIONS INDICATE. J. ALL DRIVEWAY ENTRANCE PIPES SHALL BE A MINIMUM OF TWENTY (20) FEET IN LENGTH AND HAVE A MINIMUM DIAMETER OF FIFTEEN (15) INCHES AND SHALL BE PLACED IN ACCORDANCE WITH THE VIRGINIA DEPARTMENT OF TRANSPORTAION SPECIFICATIONS UNLESS OTHERWISE NOTED ON PLANS. 4. ALL DRAINAGE EASEMENT SHALL BE CLEARED AND GRADED TO THE SATISFACTION OF THE ENGINEER. DRAINAGE EASEMENTS SHALL EXTEND TO A POINT DEEMED AS NATURAL WATER COURSE. PA V/EMEN T 1. AN ACTUAL COPY OF THE CBR REPORT IS TO BE SUBMITTED PRIOR TO THE PLACEMENT OF THE AGGREGATE BASE MATERIAL. IF THE SSV VALUES ARE LESS THAN 10, THE DEVELOPER' WILL BE REQUIRED TO SUBMIT FOR ENGINEERS APPROVAL THE PROPOSED METHOD OF CORRECTION. 2. SUBGRADE MUST BE APPROVED BY THE ENGINEER FOR GRADE, TEMPLATE AND COMPACTION BEFORE BASE IS PLACED. J. TEST REPORTS ON SELECT MATERIALS MUST BE SUBMITTED SHOWING THE MATERIAL MEETS REQIUIRED GRADATION FOR TYPE 1, ll, OR 111 PRIOR TO PLACING AGGREGATE BASE. 4. THE REQUIREMENTS TO PUGMILL AGGREGATE BASE WILL BE WAIVED IN THE EVENT THAT THE SURFACE COURSE IS BEGINNING AT THE COMPLETION OF THE INSTALLATION OF THE AGGREGATE BASE. IN THE EVENT THAT THE SURFACE COURSE IS APPLIED PRIOR TO 60 DAYS, THE PUGMILL REQUIREMENT WILL APPLY. 5. THE USE OF AN AGGREGATE SPREADER IS REQUIRED WHEN PLACING AGGREGATE BASE. 6. BASE MUST BE APPROVED BY ENGINEER FOR DEPTH, TEMPLATE, AND COMPACTION BEFORE SUIRFACE TREATMENT IS APPLIED. 7. PRIME COAT MUST BE APPLIED TO BASE MATERIAL PRIOR TO PLACEMENT OF ASPHALT (PRIME COAT RC-250 0 0.3 GAL./SQ. YD.). 8. BITUMINOUS SURFACE TO BE APPLIED IN ACCORDANCE WITH CURRENT VIRGINIA DEPARTMENT OF TRANSPORTATION SPECIFICATIONS. 9. ENCROACHMENT- POSTS, WALLS, SIGNS, OR SIMILAR ORNAMENTAL STRUCTURES THAT DO NOT ENHANCE A ROADWA Y'S CAPACITY OR TRAFFIC SAFETY, SHALL NOT BE PERMITTED WITHIN THE RIGHT OF WAY. ONLY THOSE STRUCTURES SPECIFICALLY AUTHORIZED BY PERMIT ISSUED BY VIRGINIA DEPARTMENT OF TRANSPORTATION MAY BE LOCATED WITHIN THE STREETS RIGHT OF WAY LIST 1: GENERAL CONSTRUCTION NOTES 1. PRIOR TO ANY CONSTRUCTION WITHIN ANY EXISTING PUBLIC RIGHT-OF-WAY, INCLUDING CONNECTION TO ANY EXISTING ROAD, A PREMIT SHALL BE OBTAINED FROM THE VIRGINIA DEPARTMENT OF TRANSPORTATION (VDOT). THIS PLAN AS DRAWN MAY NOT ACCURATELY REFLECT THE REQUIREMENTS OF THE PERMIT. WHERE ANY DESCREPANCIES OCCUR THE REQUIREMENTS OF THE PERMIT SHALL GOVERN. 2. ALL MATERIALS AND CONSTRUCTION METHODS SHALL CONFORM TO CURRENT SPECIFICATIONS AND STANDARDS OF VDOT UNLESS OTHERWISE NOTED. 3. EROSION AND SILTATION CONTROL MEASURES SHALL BE PROVIDED /N ACCORDANCE WITH THE APPROVED EROSION CONTROL PLAN AND SHALL BE INSTALLED PRIOR TO ANY CLEARING, GRADING OR OTHER CONSTRUCTION. 4. ALL SLOPES AND DISTURBED AREAS ARE TO BE FERTILIZED, SEEDED, AND MULCHED. 5. THE MAX/MUM ALLOWABLE SLOPE IS 2:1 (HORIZONTAL: VERTICAL). WHERE REASONABLY OBTAINABLE, LESSER SLOPES OF J. 1 OR BETTER ARE TO BE ACHIEVED. 6. PA VED, RIP -RAP OR STABILIZA TION MA T LINED DITCH MA Y BE REQUIRED WHEN IN THE OPINION OF THE COUNTY ENGINEER, OR DESIGNEE, IT IS DEEMED NECESSARY IN ORDER TO STABILIZE A DRAINAGE CHANNEL. 7. ALL TRAFFIC CONTROL SIGNS SHALL CONFORM WITH THE VIRGINIA MANUAL FOR UNIFORM TRAFFIC CONTROL DEVICES 8. UNLESS OTHERWISE NOTED, ALL CONCRETE PIPE SHALL BE REINFORCED CONCRETE PIPE -CLASS Ill. 9. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR THE CONSTRUCTION INDUSTRY (29 CFR PART 1926). NOTE: MANDATORY INSPECTIONS AT THE FOLLOWING PHASES ARE REQUIRED BY AN ENGINEER TO CERTIFY THE CONSTRUCTION OF THE ROADWAY FOR FINAL ACCEPTANCE BY ALBEMARLE COUNTY: L INSTALLATION OF ANY ENCLOSED DRAINAGE SYSTEM BEFORE IT IS COVERED. ii. INSTALLATION OF ANY ENCLOSED UTILITY PLACEMENTS WITHIN THE RIGHT-OF-WAY BEFORE BEING COVERED. iii. CONSTRUCTION OF THE CUTS AND FILLS, INCLUDING FIELD DENSITY TESTS, BEFORE PLACEMENT OF ROADBED BASE MATERIALS. iv. A FINIAL PAVEMENT DESIGN, BASED ON ACTUAL SOIL CHARACTERISTICS AND CERTIFIED TESTS, SHALL BE COMPLETED AND APPROVED BEFORE THE PAVEMENT STRUCTURE IS PLACED. v. PLACEMENT OF BASE MATERIALS, INCLUDING STONE DEPTHS, CONSISTENT WITH THE APPROVED PAVEMENT DESIGN„ PRIOR TO PLACEMENT OF THE PAVING COURSE OR COURSES, FOLLOWED BY FIELD DENSITY AND MOISTURE TESTS AND THE PLACEMENT OF A PAVING COURSE AS SOON AS POSSIBLE. vi. CONSTRUCTION OF PAVEMENT, INCLUDING DEPTH AND DENSITY, UPON COMPLETION AS PART OF THE FINAL INSPECTION. vii. THE. CONTRACTOR IS RESPONSIBLE FOR CONTACTING THE ENGINEER AND ALBEMARLE COUNTY A MINIMUM OF 48 HOURS (PRIOR TO EACH OF THE ABOVE PHASES OF CONSTRUCTION TO SCHEDULE AN INSPECTION. viii. FAILURE OF THE CONTRACTOR TO SCHEDULE THESE INSPECTIONS WILL REQUIRE ADDITIONAL TESTING OF THE ROADS ,AT THE DISCRETION OF VDOT OR MAY LEAD TO THE ROADS NOT BEING ELIGIBLE FOR STATE MAINTENANCE. ¢'1 EXIST. GROUND 4'1 g:� q•1 EXIST. GROUND - DITCH SHOULDER POINT OF FINISHED GRADE 112" SM-9.5 - 2 112" BM-25 10' TRAVEL LANE 1 1 /2" SM-9.5 SURFACE 2 1 /2" BM-25 INTERMEDIATE 6" COMPACTED AG( BASE COURSE, VDO OR #21 B DEPENDIN( UNDERDRAINS COMPACTED SUBGRADE ASPHALT PAVING - ROADS NO SCALE 114" 1' 6" 21-A TRAVEL LANE SHOULDER TYPICAZ ,S'TREM" ,Sf'CTION GREY HWRON ROAD NOT TU ,S0,11E _ V2 SEDTHxI .STEEL NOTES u�-1 Lu(m to SE CAST ` a-7e, WITH AE.,... , Opuft E L 21�z" 2V2° X l9" 10'ANS. E FOft 1. DEPTH OF INLET IN TC BE SHOWN ON FOR DEPTH To THAN K1' USE STANDARD DI -!A B 2. THE "H" DIMENSION SHOWN ON Tit STANDARDS AND SPEWED ON THE PLANS WILL BE��MEASURED FRO04 THEINVERTOF pOdTf ELOCQ WI&ODURE PLIPE "TO "EN9InN OF THE APPROXIMATE ONLY FOR STIMATINO PURPOSES AND THE ACTLAL DMDaONS WELD ALLq� FR CONDITIONS. TO C IDJT.Artfi CONNTRACTOR ELDD 3. WHEN SPECIFIED CN THE'PLANS THE INVERT 15 TO BE SPED IN ACCORDANCE WITH STANDARD IS- . THE MT OF = f9DTH sH�a al Ll T� INGL EO IN THE BID THE F» PLAN �A k 0, x &" LU05 Mil x 4" STUD SHEAR 9TRUGTURE. (t3RAT€ REMOVED) tL Z„ ee �E�° 4. IN THE EVENT THE NNERT OF THE 06tTFALL PIP�E,7EHg9g}Pt :THAN THE " Mg� AIL A -'� BOTTOM 1SHAIT EDRT EI HT MORTAR T4 E ` SECTION B-BiRUGT�LO{t�cn Or w$FUERN�QgINNTIN G HE THE COLLAR DETAIL '' " t�N RASED %'T`rEWNQ DST �ftyF T"IfING ALL n�sTIN T4. BE [VCLUk1EU 21/" IN THE 61O PRICE FOR THE 6TRUOTURE. DYdEtIbT S FOR ��cryI CAST TftON ONLY o ��DUMP WASTE DRAINS TO WA7ERWAYYU 5. STEPS ARE TO 8E PROVIDED WHEN H Ci 4'-D" OR OREATER. FOR DETNLU SEE --- -DETAIL STANDARD sT-L DETAIL A B 6- IS ITEM MAY Be PRET OR PAST - IN -PLACE, CAS 2' 7» H 3••I MAIL B 7. 04 X 8" SMOOTH DOWELS AT MIT Y 1211 0-0 JACE�H'r {!' OEPTH AGGR. ik00, 1)78 OR IFS X B" W07H Cl ��� PKL2OI At S TO A9UTTIN4 OCMCIFETt= Tpp PREY€HT i)£TiLEMENT. W LIEU # 00WELS A 2'"X4" NOTCH MY PROYIDED. c►• SEE BTANDARO t -y, ;FQR a +" 3" DIAMETER A.TTERNATE DESIGN. ' ft, COLLAR SW r FE 6- 3"' UTAhfE`rER WEEP HOLE W 12"x12u & NOTE d T$ PL{ASTpI�Dy�HPyRUwARE CLOT'H�� " IAESt1 '2 2 mf 12"- la" CR a4 MENEM �v (MIRE DIAMET° Q a3NWUMDEFi M SH NH MAIL 8 CONCRETE IS 9. CAST IN PLACE OCNCRETE 19 TO EIE CLASS A3 3pp� per. PRECAST &L I f 74 DE 4940 P$!. SECTION A -ill 2" 10, ANY ALTERNATE WM S OF ANCHORAGE " MEETING THE APPROVAL OF THE ENGINEER CO CRETE. CIUANTfI FOR MIN.DEPTH MAY BE SL9S71TUTED FQR THE CAST IRON 12" CONCRETE PIPE - 1.440 CU. YD. CONCH)=TIE APPROAMATE WEIGHT LUGS SHOWN EEREON, 15" CONfCME PIPE = 1.82E CV. YD. CGN 1_ETE 11�, � +� � * -�4 ORATE AST `)W Las n, LETf ENO RINt 13 WASTE D ON ALL T 1-1 1B CON FIFE - 1820 CU. YD. C TE u1 24" CONCRETE PIPE - 1.6I7 CU. YD. GONC1?�TE GRATES. ORATION OF LETTERING MAY ADD 0.4160 CU. YD. PER SECTION C=C SECTION D-D VARY BY MANUFACTLRER. ADDIT10N1AL FOOT OF DEPTH. GRATE DETAIL STANDARD DROP INLgTMLA 1 1211 - 2411 PIPE, MAXIMUM DEPTH (H) ! 10' � 104.Q1 VIRGINIA DEPARTMENT OF TRANtRF^ ffAnON 402 -*-AE1Y�1,'IA D SA mix 1 b TSWE TO BE BEVELED I H W0 MORTAR ` 00 NOT BEVEL WERT u __ - - - - - NIOTEE f GE ��� LSE, �AdBE p�y�� ECG p p qy Ar T1f 1. P�RO.lEOTBiY�OYEE VE HBO iDCtIRS�.Q , a1tN�iQUL ? M:t� LW114 E ALIILL B� FAX? 4WH TF� IrLOYV �i��G111/F.IET?. INLET END' OF T}� 2, TH94 ITEM MAY BE PR£GA3T OR CAST QV FLAN �' "'- DW t. 7. V5#AL6AEV jHE &TLET END OF THE CULVERT MAY 6E EIINER OQUARE 3. A67 iN PLACE CONCRETE TO BE CLASS A3. FCR PREOAd7 BEE stiEEr B' E THE + " L QCkBTR1�CTED PAR 16 T}% 4. 02 STA)QARD TO 9E USED WITH Ii�rRl PHT GRA881N06 AND ALL 3KEW8 !QT4 B. Ye CFIWER MAY DE PRSYOED ON ALL EDG0 AT MMUFADTURM, l OPTION. 0. QRA'NPl0Y1.� & OCCUR.LED IN ALL AXEA8 EXCEPT WHERE A DONFLIOT WITH INVERT 4R EW-1 EW-Vi ENbWALL FOR CIRCULAR PIPE DIMI"CH or FIlN: "YOU 12"; 18" 18" zr' 43 TN' 2'i" 0R Jv 3b m 30` A 0'-4"! O'-0"' W-p 0'-11" 7-04 P-0" E v-11';" V-T' 1'-3" 1.6" 1-8" 2'-0" 0 R-4'i ?-7--4 1 " T-2n r.0" 2i.2." D F V-0 0'-8" 0"-D" Of -all 0'-y" 2'•11 S"_2" 3'-8" 4"-ee 4e.24 L v-01 6'-4)" 0'-0" B'-0n lD'-0" 121-U" a 0'-* 0'-Ir," W-2" 0'-2Ve 0-4l n Q'-aW b 0'-r. 0'-11/,° 4' Yj' 0'-2n 0'-2Ve O'-3n C1JB1C YARDS OF CONQ?WM CONa. PPE D.2M 0.422 D.ee1 I,= 2A87 2.841 C,M, PPE 0.2b7 0.821 I 0.7DB I'M i Lim 3.148 ENDWALL FOR ELLIPTICAL PIPE 61zc or ELLp't1OAL Pik pLiur (BPAN x R1 23"X14" 3D"x1B" e34"A22n 30"224" 42•x274 46"X29" 48 X32" 83"X34" A 0'-S" 01-8" 0'-10" O"-Ir', D"-1r 1'-0" P-0n P-04 9 D D N94 1-8' T-2" r-8'e T-11" 1'-T' 1-0" 21-Y' Y-1Q" r-iS"; 2'-4" 21-04 1'-@" 2'-b" 2'-3" 7.1D" V-7" 2"-&- 7-11" 2'-8" 2--8" V.11" 24" 2,-v P O".ge" a'-6" . a-9" D _rt 0'-a" Q.-S. 0­6.. a' -se" H 21-Ny' Y-a" 4'-1"" 41-0" 4".2" V-7" L G'-b" T-2n 6'-6" 9'-2" 1D'-2" 10'-11' 12'-ir' a 1'-1r 2'-0" X-10" Y-2": 3'-6" 3'-0 V-P 4'-0" 4 0'-2VS" O'-31/,f" a -We 0'-4n V-4Ye W-4n' W-W' W-ft, b 0'>2" Q'�2Vj�" 014ye 4'-u°: D'-31 a w-Ov w-4n O'"4� e CU9IQ YAlms co (3ONCRm COHC.PFE 1 0152 1 0.096 1 1.271 1.8007 1.611 2.)M 2.612 il 2.901 ERE �iTM- DARD ENDWALL FOR PIPE CULVERTS >� 12"-36" CIRCULAR AND 23'1x1411-5311x3411 ELLIPTICAL PIPES VHif"DEPARTMENT OF TKM6PORTATWN ;.E STANDARDD 6L-1 FOR APPLdCAMLITY Of W0Y kA06. SrTANDNO MI -1 NOTE' FRAME 8 COVER TIE TfMnP Of M ONRY IS TO BE LEFT (. E � / t W To f TO ay 't C Elt. 9 A� SECTION B-B BRICK FLAN M 'TION 12" - 60" PIPE IECTIONS SECTION A �A I� 4N T81WARTD T-MN-21WBY 3UOSTITUTEO FQR TAPE� D 8EGTWI WHEN APPROVED SY THE ENOiNEER, E OR BLOCK 464 DI TCH R%W 4:1 HALF PLAN VIEW EXIST. GROUND EXIST. GROUND HALF SECTION A -A (WITH FRAME AND COVER REMOVED) BRICK CONCRETE Nvtfi* L fyipu�TAfHI I'rl s SHOWN ARE FOR M @OL TABLE OFF 43UANt1'TIEB pOBTAIIN TH E ESU.R Q WAN N IOMEN 6 gUAHtI'rEIF IN DEPTH OIUGJ4 MANHOLE 1 d7t10AET€ FOR 12" - 4811 VIRGINIA DEPARTMENT OF TRNW Jx� E �1 m.T hBINO1MUl�td •PAYDLINEa-" E SECTION k-k END VIEW END ;SECTION DIMENSIONS 9PECIFlCATICN REFERENCE 302 E MANH fANf�tETE 3.1 ENTB W66 H O R EACH Pj& 4. MATERIALS OR APPROVEDHCPIET M NPdIk10LE 8 OCt gLgp�g D•4HTK94ftNE$$ AOvRE 1 fif(OMplj_AMUUM TO MALT 13tI0V(Ne�C ORM CONCRETE, 0. ALL CONCRETE TO BE CLAs6 A3. 7.WHEN 6FECIFIED DN R� THE IS T ED W ACCO' AND t}IDAtiO IS-t THE COS {. N@ AHD FLACIN@ Ar.L MATEIR T ��p�D WTTHE �D QR THE STisUC ORE. 0.705 1699011015 1--1. 7 vwipp 2 47 O O d.4 8 1172 . ..3...9.. 0 4.1Z2HYERT 0 H7O --T .._ --- CULVERTS 302 ALTERNATE END -ACTION 12" - 60" PIPE E" HUB END ON OUTLET END -$EC MOOT END ON INLET END-3E0TM 1, x q E kGI tlRFBI MiO E INIMtII�d PLAN SECTION K-X END VIEW It wRPM,1 Ml�f.%3�11rME ��ar■clCilal�rrrr l�t��r�lr' miff�� ------------- w-w-391111001 PAY LINE G B NOTES= TPP}I,Ng LENGTHS SHOWN ON PLANS ARE �g� �p rF�E`►!H$ Wi1Llg fi CONTRACTOR LEFT. IF THE FM Hif' T)19 OrrP.t I1Ci IN D�MEN , ". END -SECTION FOR 12"-60" CONCRETE IPIPE CULVERTS V90MA QHPARtMENT or TtmPORTATKIN TH 0 WCOTT R. COLLINS� No. 35791 ,�. I�NAL E z � 0 a 0- U Z W z O o 2: � 0 c1`� J H � z H W - tl Project Glenure, Grey Heron Road Plan Plan Sheet No. Designer AML, PE Sheet 2 of 2 Culvert#2 Rev. Date Date 10/18112 STATION: HYDROLOGICAL DATA AH W Cuntob D.A.= 0.17 ac. 100 yr, Flood plain efev_ DesignAHWdeph elev. Stucthres efev. Ireq. - TWelev. Culvert#1: Cw - 0.56, Tc - 6.0 min.,12 - 4.9 in/hr,110 - 6.5 in/hr - Shoulder = elev, 392.87 = I GL elev. 392.85 DISCHARGES USED RISKASSESSMENT ADT IDebursAvalable SI<ew ° CoVer �` Q 2 = 0,47 CFS Length Q 10 = 0,62 CFS Overtopping SNe Q = CFS Flood Plain Management fnv. EL 390.59 So-- 0,50°% lriv. !Et; 39050 Q = CFS Crilar'ra and Signifcantimpact Orig. Gr. Elev, L= 18 Orig. Gr. Elev. Q - CF5 HEADWATER COMPUTATIONS CONT. OUTLET INLET CONT. OUTLET CONTROL CULVERT TYPE 8 SIZE Q Q113 HW. VELOCITY TreatCOMMENTS HWI HW Ke do (do+D)/2 ho H LSo HW C.M. Srraoh ELEV. Inlet Cowolted (+0 9) wl downstream basin. Velocity in pipe Proposed 12'RCP Culvert (2yr) 0.47 0.47 0.62 0.5 0.6 0.4 0.83 0,83 0A 0.1 0.8 0.8 N/A (24P sllsnctetrosiaeonerncreta. Inlet Corlydled (+0.8) wi dowrdtean basin. Velocity in pipe Proposed 12' RCP Culvert(10 yr) 0.62 0.62 0.65 0.6 0.6 0.4 0.83 00.83 0-1 0.i 0.8 0.8 NIA {2C5fVs) is ncl aros�r e m crrcr e \ \ \ U) Q a LLJ LU LU 01-1 Te -5 MIN. I 2-MAX + 10-MA� /� / / ' I I I I I I i ♦ % / AREA- 0.10 AC. ` \ \ \ �. \ \ �\ \ `\ �' / � o Tc - 5 MIN. LrA�R­EA - 0.07 AC.�~\� , Cw - 0.44 c - 5 MIN. ~CD j �.. ( Cw - 0.51 I AREA - 0.06 � � ,, 1 1 � I I I I \\ i► � `., 1 / / _ Tc - 5 MIN.L\ \ \ \ Cw - 0.53 10+p0` AREA - 0.06 AC. 1 + p :............. 50:::::::::.......... __�_ ~ . - 1 ....... .. /.......... ...00 ..................12 \ \� Cw - 0.53 ~ . \ \ \ \ _ \ _ / o:..,f:. a `...� \ti .� `� ♦ \ �' � \ '\ III \ i __ CULVERT AREA - 0.09 AC. 1 .� �"'���� \ \ Tc - 5 AN. \. - - ---- -- -- -_ - Cw - 0.50 AREA - 0.24 AC. �\ :: :.. \ \ AREA - 0.06 C. AREA-0.13 AC. ♦ Tc - 5 MIN. ` \`` ::::.:.::.....: \ Tc - 5 MIN. Tc - 5 MIN. AREA - 0.11 AC. Cw - 0.36 t. ::: x \ Cw - 0.54 l I o ... �,'..o . -Cw -0.41 '-- _ Tc-5MIN. `...\ \ A A-0.06AC. Cw - 0.43 - ` \ AREA - 0.40 AC. .:._ \ \ Tc - 5 MIN. \ \ . \ \ \ \ , ' III h o Tc - 5 MIN. :`:::.::: \ \ \ , - / \ `� Cw - 0.33 N VGJ - *44 .........: c1fit#7"farYYfi: Grey Heron Road Plan J&1fu6ber: 1.10.64 De igned By: � �� i, ` � ..:..:::\ \ � t , ` - ' t C INCH a Road Right nLr.0i •.�, , \ \ :..�� \ I I I ` \ , t oIl \ \ \ ` '- / l- --.,."._._ `....--- ---J I t � Ii�5ts1-�Ot�rs M3ts1 �0�+s - --- l` '''_ ----_. �� """ .s �` :::1 x°O\ • I + ``\\ \ ~,,. ~~ \ ,` \ Slit' T. C Area CA l= (�° Slope Eiutlt (rt-0:03) Jttt (Scad) (a-0 U5) I'uyeJ (u=ty 015j I1e C �' L7eptliri Yiiu Dc sign4-0 Flom ru (min) Vuhzc (ac) Vcun (inlhrj (cfs), (tt/tt) Vol. Ckpfh fret. Depth freC, D. (inihx} (dCs) (li} (I)eptlrj frYPe) \ - \ \ -- __ 1U+04 11+OU 5 0.50 0.09 oz 5.6t:aafps 0.21 11 6.80 0.31 0.23 it r Earth t AREA - 0.16 C. 1100 12z00 5 0.41 0.13 U.1U 5.G O.iS U.OLOU (.-L1 fps 0;1k li G.Ba 0.67 .0 3 t ti 6"::F�tth r �' f % Tc - 5 MIN. 12+00 13+00 5 0.43' 0,11 QA5 54 ' 032. 0,0006 1 _433 fps 039. tl 6,su 0.99: A21t 6" i arth ` Cw - 0.38 AREA - 0.14 AC. 13 +00 14+00 5 0.36 0.24 0.23 5.6 1.30 U.0066 I.49 fps 0 47 ft 6.80 ' 1.58 U.5U rt 6";:l with GRASS D I TC H�f Tc - 5 M I N . `` � \ \ `r° I I I I I 11- \ \ � \\ \ \ `\\ \ \ � � '►� � H 14+.OU 15+00 5 033 0.4U 0.36 '5.G �.U4 0.0066 L67jps 0.55ft 680 2.18 0.59ft 8"'Earilz t::_. I I I \ \ \ \, -- \ NO SCALE \ Cw - 0.40 ` / I I /p� \ \ \ , \ \ 15+00 16+00 5 0.38 U.1G 0:42 5.6, 2.38 0.0075 f.Y3jps U.ST ft 6 s0 2.89 0.41 R 8";Euth \UJ 16-40 17400 5 0.40 0.14 OAS 5.6 ' 2.69 0.0692 Z93fps G.58It 0.8U 3.27 0,62 ft 81 Earth l I I / - � \ \ \ \ �\ \ \ \ � � /� -- - - .t177-oo 8!oo S 0.39 411 0.54 $.6 IN. 0.0100 1Sfps 0,591i 00r ` : AREA - 0.04 AC. - 18+taa 18f50 5 0.37 0.09 6.57 3,6 3.1x' o.aa5a .t7jps 0,9 ft 6,aa 3.87 o.7a 11 10r` Futh '" - Q 3.18 Q 3.87 AREA cO. 4�AC. , L9 Tc 5 MIN. \ \ 21+00 �U40 5 0.70 A.12 0.(28 S.G 0A7 0.0100 1.3Sfps 0.29 ft 6.30 0,57 0.32 R 4" Earth 2 MQX ` 10-MAX ` Cw - 0.39 \ o Cw - 0.54 20+00 19fuU 5 1 0.44. 9.12 0.14 5.6 0.77 0.0100 1,53fps 0,35 ft 6.89 170M 6.m it G"'.annul V - 2.1"5 V _ - 2.26 ` 1 \ \ \ \ ~ LU U.37 0.10 0;17 5,6. 0,17 U,OUSU {:;Sips 0,4411 6.8U k.ls 9.4711 6'.` Euxth 2 MAX ~may 10 MAx �\ \ + ' I \ \ \ \ \ \ \ \ \ \ \ \ ' ^ J 1 \ v 2-MAx �10-M�� :t.. x � �\ I I �\ CULVERT #2- % AREA- 0.17 AC. UJ C. Cw Z j AREA - 0.09 A Tc-5MIN. . \ ♦ 'x 5 -III 0 56 I I I , P \ \ \ \ \ \ \\ \ [ H'I I I !C -. ~ \ / Cw 0.37 6 \ . AREA1 0 02 At, \ \ \ \ \ \ 1 ................ ............. J _ SCOTT R. COLLINS`Z U No. 35791 i IONAL \ j to w a ca UJI 1051 11t d B L ` " �/ / Z 0 / Project Name: Grey Heron Road Plan Job Iuirl.6et: 112954 g Y, M / � CULVERT #1 ' I 1 1 \DL=12\ AREA - 0.63 AC. 1 t Tc - 11 MIN. Cw - 0.37 1 1 1 \ r \ \ GRAS,5 DITgH NO SCALE AREA - 0.18 AC. Tc - 5 MIN. Cw - 0.42 / 2_,1A 2.01 a] = 2.44 I--,' - 2-MAX 1192 \ V p I I I 1o_mps 2.0I 1/ 1 / j III I I I / / t 1 ' / / AREA - 0.14 AC. D = 0158 D 1 06 Project Glenrrtore, Grey Heron Road Plan Plan Sheet No. Designer AML, PE Sheet 1 of 2 culvert# i Rev. Dab Dab 10118/12 _ STATION; (HYDROLOGICAL DATA: AHWContols D.A,= 0-63 ac. 100 yr. Flood plain efev. DesignAKWdepth e4ev.� 5tuctures etev. Ireq. TWelev. Culvert #1: Cw - 0 37, Tc -11.0 min.,19 - 4.0 in1hr,110 - 5.4 inlhr - Shoulder _ elev. 399.2 CL eleV, 399.5 DISCHARQES'USED RISK ASSESSMENT ADT SkeN ° (;aver tQ 2 = 0.93 CFS Deburs Available Length tQ 10 = 1:26 CFS Overtopping, Stage Q= CFS Flood Plain. Management Inv: El. 395.9 So= 0.92,E Inv. El. 395.10 tQ = CFS Cril8ria and .SignilicantIn-pact Orig. Gr.Elev. L= 87,38 Orig. Gr. Elev. tCl = GFS HEADWATER COMPUTATIONS CONT. OUTLET End INLET CONT. OUTLET CONTROL CULVERT TYPE& SIZE Q 0113 HW. VELOCITY Treat COMMENTS. HW1D HW Ke do (dc+D)12 ho H LSO HW C,M. Smmoth ELEV. IrleE Calydled (+0.5) w! dartnstez'tn F.aSin Velocity in pipe iPropa5ed15'RCPCulvert(2yr) 0.93 0.:93 OA2 0.5 0.5 0,6 0:93 0.93 6A 0.8 0.2 0,5 363 NIA (3.t 1tls)isrderresiveonccalcre1e frlet Cci*cfled (+G.d) wi downstre4n bwirt: Velocity h pipe )Proposed 15' RCP Culvert(10 yr) 116 126 6.48 0.6 0.5 0.6 0,93 0.93 0.1 0.8 0.2 0.6 3,96 NIA (39(Ws) is ncteimsiva on concrete_ HITCH; Road Leftic s=�. Maxv=30fps MaxV40fps Stu From Sta 6n 1' (min) C Value Axua (ac.) 0A ccun ! (mlhr) r2 (c{S)' Slope (ft/11) Forth (n-N,03) - Jute(SUd) (a=0.O5) - Paved (n-0.0l5) t � (in/hr) Q (ens) ,,.' Ih pth" blizt,th ar n (11)_ (Llepth) (I'yp4) 1!eL llepth Vel. Depth YeL Ik;pth 10+00 11+00 5 0,42 0.18 0,08 S 6' : 0 12 0.0166 459 fps 0,26 ft 6! 80 0.51 0?8 f1 4" Faith t 1+00 12+00 5 UA0 0.14 0.13 5 6 : 074 0.0100 L52fps 0:75 f1 6180 0,89 0,37 ft 6" Earth 12z•UU 13t00 5. 0.44 0,10 0.18 56 . 0.98 0.0U66 /.3Yfps 0,4211 6.80 1.10, 0.4Si1 6" Faith 13+00 14400 5 0,51 0 07 0.21 5 6 : 1.18 0.0066 1, 86 fps 0.45 ft 6.80 1,44 0.481t W Earth loon 154w S 0.53 006 0.24 56 1:36 40066 1,51fps 0.4711 6.30 1.65 0.51 ft W Earth 15+01) 16:WO 5 0.53 0,06 0.27 56 ._ 154 0.0075 L64fps 0.49 ft 6.0 L87 052 ft 8" Eurtlt 16t00 17 w 5> 0,54 0.06 0.31 5 6 02 0,0092 1,82 fps 0.49 ft 6;8U 2.09 0011 a 8" Eaaxth 17+00 t8+l1U 5 0.51 0.06 0.34 5,6 1.89 "0,0100 1,92fpx mo ti 6.80 2,30 0,53 ft V l:alth W09 18 F50 5 0.54 0.04 0.10 5,6 2.01 . 0.0050 La -fps 058 ft 0,80 2,44. 0,6211 e Earth 21400 2U+00 5 0.61 0,08 0.05 5.6 ; 0.27 0.0100 L18fps 1 02411 6.80 0.33 0,26 R 4" Faith 20r00 19 f W 5 0.52 0.07 0.09 5.6 0.4$ 0.6100 1,36 fps 1 0.30 ft 6.80 0.58 0.32 ft 'r Ear f 0+00 19+50 5 0.54 0.02 0.10 5,6 : 0.54 ! 0.0 550 1.05 fps 1 0,35 ti 6.80 0165 1 0.38 ft W Faith Tc - 5; MIN. \ y Cw - 0.54 '-- AREA - 0.10 AC. ``�:: \ \ \ \ \ \ ~ LLB Tc-5 MIN. ` \ , AREA - 0.07 AC. \ \ \ \ \ \ \ c - 5 MIN. \ \ \ \ \ \ \ \ \ \ \ \ r FC/2 ia-;-� L \\ \\ _yam - \ \ ,� \ \ \ \ \ \ \ \ \ 1 -• W LLJ AREA - 0.12 AC. j� Tc c Cw - 0.44 r� :::. o........ \::::. :. :\. .::::.:.::....( 1 I I \ \ \ 1: ::LU \ I AREA - 0.12 AC. \ .:. '.L' I \ \ \ \ \ \ \ \ ! \ :::':'::::::....\ AREA - 0.08 AC. I \ \ \ \ \ Tc - 5 MIN. ` :`o:..":....: Tc - 5 MIN. \ \ \ Cw - 0.70 ::o:::::: LU I 1 \ \ \ 0 LU 50 5 HORIZONTAL SCALE 0 25 50 100 200 ( IN FEET ) 1 inch = 50 ft. VERTICAL SCALE 0 2.5 5 10 20 ( IN FEET ) 1 ifich = 5 f t. PIPE DESIGN n = 0.025 for CMP in = 0.013 for RCP , n = 0,01 for HDPE Ape ;flydrologysipipe 1 3 L v N I F C• \ I v '>` v L � L k t E: : .c o c c '� 3 U ds r3s U' - m i ffs 1 cu w F w U �:.:: i � _ W C s y [ss L zi:t6>:: v? C2 3 rn � E L vL - l0 1 t E: Cm- ... �O iv a ttf E O o(� i - ca cn ur �l ' CJ Q i O v Flpe run: 6 - OUT 6 4 1,84 0.40 0.736 0.736 8.0 4 5 8 1 4.2 $ �'.: � "`:. 387.00 3$6.50 41.0 0.01 4.4'122 15 ;..::>..�\ `>z7a:14::.:.:.>.:»: 6.04 0.11 0.94 0.48 0:451 1.187 8.11 5,78 2.61 711771RN 386A0 364.00 209.1 0.01 0.1071 15 15.35 0.23 :Ml­ 44 2 OUT 0,00 0.90 0.000' 1.187 8.34 5.73 0.00 7= .87 361.00 360.00 69:8 0.01 0.0143 15 \ "` 7.11 0.16 DRAINAGE DESCRIPTIONS STft: PIPE INFORMATION INLET INFORMATION ` I01A (in.) LENGTH* (ft.) SLOPE (°/U) INVENT IN INVENT OU MATERIAL INLET TYPE Curb Type SLOT LENGTH RIM* ELEVATION COMMENTS 6 5 15 41.00 1.22% 387.00 386.50 RCP DI-1 NIA NIA 390,48 :V©OTSTD. &I .4 D1-1 N/A N/A 390,30' DOT STD, 19-1. 3 15 209,08 10 71%a 386.40 364.00 RCP 2 MH N/A j N/A 369.75 VDOT STD. IS-1 1 15 69.83 1.43%fl 1 361.00 360.00 RCP VDO- (L=6', STF I IN) 410 NOTE: ALL ROADWAY EMBANKMENT MATERIAL M ANKMENT MAT RIA SHALL CONSIST PREDOMINATELY OF SOIL AND BE PLACED IN SUCCESSIVE UNIFORM LAYERS NOT MORE THAN 8 INCHES IN THICKNESS BEFORE COMPACTION OVER THE ENTIRE ROADBED AREA IN ACCORDANCE WITH VDOT 2007 ROAD AND BRIDGE SPECIFICATION 303.04 NOTE: i. ALL FILL TO BE PLACED AT 95% COMPACTION. 400 400 PROPOSED 10' GRASS SWM 395 ACCESS PATH 395 EXISTING GRADE FILL 1'2' VDOT STD. ES-1 VDOT STD. ES-1---- 390 390 ,:4 VDOT STD. DI-1 TP=390.30 PROPOSED NV IN: 386.50 TO 6 DITCH GRADE OUT: 386.40 TO 2 385 I INV IN. 390.59 385 12"CLIII RCP 18.00 LF @ 0.50% 1 INV OUT. 390.50 380 I 380 M � C4 N (D O M C) O) m -0+50 0+00 0+50 1+00 CULVERT #2 410 405 405 EXISTING GRADE VDOT STD. ES-1 400 400 'STD. EC-1, CL. 11, PROPOSED GRADE TYPE B RIP -RAP 2.1' Nl=3', W2=7', D=2') I VDOT STD. EW-1 395 CP 15" CL III 0 395 _ 87.38 LF @ 92% INV IN. 395.90 INV OUT. 395.10 390 390 o rn `n co 0 LO coo m d M d 0+00 0+50 1+00 1+50 2+00 CULVERT #1 400 AREA RUN- INLET RAIN- RUN- FULL RUN - FROM TO DRAIN. OFF CA CA TIME FALL OFF INV. INV. .. ROW VEL. ROW OFF Va. . " A7 COEF. INCRE- ACCUM- to 1-10 r. 0 ELEV. ELEV. LEN. SLOPE DIA. RATE RA 1 q r. TIME 1 qq r. 10q r. acres C Mn.in/ hr ols. ft. % in. o.f.s. f. :s: sea. c.f.s. s. f. .xxxi MENT ULATED IN OUT �"� \ ill: � , � \�� �\\ ..f6 ���: c.zxbl�:`:`'.<�'^:,:<�" �» .`�'� a ::F ::'^3 \\�`� kA�`��`` : �; A•rk" +4 : �\ .�;7.::4E:;s � h� #7 6 4 194 0.4 0.74 0.74 8.00 5.81 4.28 W,00 W-50 4100 L2% 15.06 714 6.04 6.8 5.6 6.4 4 2 0.94 a48 0,45 1.19 8.11 57$ 6.97 386,40 364.00 209.08 1071% 15,00 21.14 15.35 13.,6 9.0 16.4 2 OUT 0 0.9 0.00 119 8.34 5.73 6.81 36L00 360.00 69.83 L430/o 15.00 7.72 7.11 9.8 9.0 1.3 N El [sit 0 O~ o f-C) U H Lq 00 O a0 Ccn O p cO ch O Qmoo >O� > p CO (0 0�11> 395 M Z O �a> Z- 395 U).P PROPOSED GRADE 390 ( 390 EXISTING GRADE I i 385 385 15 CL III RCP Q 41.00 LF @ 1.22% N 380 Z 380 n- t o o0 O 375 0 CO NMz011 \� 375 cnl--ZZ 370 370 PROPOSED GRADE 365 365 VDOT ES-1 \ INV OUT. ISTD. 360.00 360 360 - ----- 15" _ CL III R ---- - ------ ---------- - - - LF @ 43o/Q 69.83 355 - - VDOT STD. EC-1, CL. 11, TYPE B RIP -RAP 355 (L=21', W1=3.75', W2=9.25', D=2') 350 - -- -- -- 350 PROPOSED FOREBAY FLOOR - ELEV. 352.00 345 345 CD m 00 COO N '00 0)N co ccoo m (7 c ccoo co M co 't coM r: w M M 0+00 0+50 1+00 1+50 2+00 2+50 3+00 STORM 3+50 4+00 4+50 TH 0 >-1 SCOTT R. COLLINS'Z O t-+ rO No. 35791 ,l• r\ 0 LEGEND EROSION & SEDIMENT CONTROL EROSION CONTROL NOTES DESCRIPTION OF EROSION & SEDIMENT EROSION CONTROL NOTES & NARRATIVE ROADS MEASURES: ES-1: UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION CONTROL MEASURES: PURPOSE.- TH �,,, - - - G CULVERT AND SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED AND EROSION AND SEDIMENT CONTROL MEASURES.- THE PURPOSE OF THIS LAND DISTURBING ACTIVITY IS TO CONSTRUCT GREY HERON ROAD FOR THE PRESERVE l I- - - 1 EXISTING STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE IN ACCORDANCE MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF AT GLENMORE. THE TOTAL AREA TO BE DISTURBED WITH THIS PHASE OF DEVELOPMENT IS 4.23 ACRES THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA IT !S ANTICIPATED TO USE CONSTRUCTION ENTRANCES, DIVERSION DIKES, EXISTING SEDIMENT BASINS, � CULVERT WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. STRUCTURAL AND SILT FENCES WILL BE INSTALLED TO CONTROL SURFACE DRAINAGE. TEMPORARY SEEDING WILL EXISTING SITE CONDITIONS: SCO`IT R. COLUNS� PRACTICES USED IN THIS SECTION CONSIST OF THE FOLLOWING: REGULATIONS VT 625-02-00 EROSION AND SEDIMENT CONTROL BE USED IMMEDIATELY FOLLOWING ALL LAND DISTURBANCE ACTIVITIES TEMPORARY STOCKPILE THIS EXISTING SITE IS MOSTLY WOODED, SLOPING DOWNWARD TO THE SOUTH EAST. O �_- Q DROP INLET & STRUCTURE NO. REGULATIONS ADJACENT AREAS: U No. 35791 ,?� 3.01 SAFETY FENCE: ES-2: THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO AREAS WILL BE MAINTAINED FROM TOPSOIL THAT WILL BE STRIPPED FROM AREAS TO BE GRADED CURB A PROTECTIVE BARRIER INSTALLED TO PREVENT ACCESS TO AN EROSION CONTROL MEASURE. THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE AND STORED FOR LATER SPREADING. STOCKPILE LOCA77ONS SHALL BE ON SITE AND SHALL BE THE SIDE IS LOCATED TO THE EAST OF CARROLL CREEK ROAD AND BORDERED ON ALL SIDES BY VACANT LOTS. .0 4 TO PROHIBIT THE UNDESIRABLE USE OF AN EROSION CONTROL MEASURE BY THE PUBLIC. COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO STABILIZED WITH A TEMPORARY VEGETATIVE COVER. PERMANENT SEEDING WILL BE PERFORMED FOR OFFSITE LAND DISTURBANCE.- �01-1 CURB & GUTTER APPLICABLE TO ANY CONTROL MEASURE OR SERIES OF MEASURES WHICH CAN BE CONSIDERED THE FINAL INSPECTION. ALL AREAS WHICH WILL NO LONGER BE EXCAVATED AND WHERE CONSTRUCTION ACTIVITIES HAVE NO OFFSITE LAND DISTURBANCE IS PROPOSED. ALL LAND DISTURBANCE IS TO OCCUR WITHIN THE LIMITS OF �ssroNAL E��� UNSAFE BY VIRTUE OF POTEN77AL ACCESS BY THE PUBLIC. DISTURBANCE AS SHOWN. PROPOSED PAVEMENT 3.02 CONSTRUCTION ENTRANCE. ES-3: LLTO ER SION D FIRSTSTEPIN ENT ONTROL CLEARING. BE ARE TO BE PLACED PRIOR CEASED. PERMANENT SEEDING SHALL ALSO BE PERFORMED FOR ALL DENUDED AREAS WHICH WILL CRITICAL AREAS BE LEFT DORMANT FOR A YEAR OR MORE. SELEC77ON OF SEED MIXTURE WILL DEPEND ON THE 77ME EC-3A DITCH A STABILIZED PA VED CONSTRUCTION ENTRANCE W/7H A WASH RACK LOCA TED A T POINTS OF ES-4: A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL NO DISTURBANCE SHALL OCCUR WITHIN THE 100 STREAM BUFFER LOCATED TO THE NORTH OF THIS PROJECT. VEHICULAR INGRESS AND EGRESS ON A CONS7RUC77ON SITE. TO REDUCE THE AMOUNT OF BE MAINTAINED ON THE SITE AT ALL TIMES.OF YEAR APPLIED. SOILS. - DEPTH DEPTH OF EC-3A DITCH MUD TRANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF. ES-5: PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN TEMPORARY SEEDING WILL BE PERFORMED FOR FALL DENUDED AREAS WHICH WILL BE LEFT DORMANT SOILS MAP IS INCORPORATED INTO THE EROSION CONTROL PLANS WITH SOILS DATA INCLUDED WITH THIS CONSTRUCTION ENTRANCES SHALL BE INSTALLED AS SHOWN ON THE PLANS TO REDUCE THE INDICATED ON THESE PLANS (INCLUDING BUT NOT LIMITED TO, OFF -SITE FOR MORE THAN SEVEN DAYS THESE AREAS `SHALL BE SEEDED Wl7H FAST GERMINA77NG NARRATIVE. AMOUNT SEDIMENT TRANSPORTED ONTO PUBLIC ROADWAYS. )� VEGETA77ON IMMEDIATELY FOLLOWING GRADING OF THOSE AREAS SELEC77ON OF SEED MIXTURE WILL SEQUENCE OF CONSTRUCTION: EC-2 DITCH BORROW OR WASTE AREAS THE CONTRACTOR SHALL SUBMIT A 3.05 SILT FENCE: SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND DEPEND ON THE 77ME OF YEAR APPLIED. 1. NOTIFY ALBEMARLE COUNTY TO SCHEDULE A PRE -CONSTRUCTION MEETING AS REQUIRED. 6" DEPTH OF EC-2 DITCH A TEMPORARY SEDIMENT BARRIER CONSISTING of A SYNTHETIC FILTER FABRIC STRETCHED APPROVAL BY THE PLAN APPROVING AUTHORITY. CONSTRUCTION ENTRANCE.- 2. NO !EROSION CONTROL MEASURES MAY BE REMOVED DURING THE CONSTRUCTION PROCESS WITHOUT THE ACROSS AND ATTACHED TO SUPPORTING POSTS AND ENTRENCHED, TO INTERCEPT AND DETAIN ES-6: THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL A STABILIZED PAVED CONSTRUCTION ENTRANCE WITH A WASH RACK LOCATED AT POINTS OF APPROVAL FROM THE INSPECTOR ON THE PROJECT. NECESSARY TO PREVENT EROSION AND ,,,y,,, EARTH DITCH SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING CONSTRUCTION OPERATIONS IN EROSION CONTROL MEASURESVEHICULAR INGRESS AND EGRESS ON A CONSTRUCTION SITE TO REDUCE THE AMOUNT OF MUD J. INSTALL THE PAVED CONSTRUCTION ENTRANCE WITH WASH AREA AS SHOWN ON THE PLANS. CONSTRUCTION ORDER To PREVENT SEDIMENT FROM LEAVING THE SITE, AND TO DECREASE THE VELOCITY OF SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. TRANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF. ENTRANCES TO BE INSTALLED WHERE CONSTRUCTION VEHICLE ROUTES INTERSECT PAVED PUBLIC ROADS, DRIVEWAY CULVERT SHEET FLOWS AND LOW -TO -MODERATE LEVEL CHANNEL FLOWS. THE SILT FENCE BARRIERS ES-7.•ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL SHALL BE INSTALLED DOWN SLOPE OF AREAS WITH MINIMAL GRADES TO FILTER SEDIMENT MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING CONSTRUCTION ENTRANCES SHALL BE INSTALLED AS SHOWN ON THE PLANS TO REDUCE THE PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY (VEHICULAR) TRACKING ONTO BENCH MARK LADEN RUNOFF FROM SHEET FLOW AS INDICATED. THEY SHALL BE INSPECTED IMMEDIATELY SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. AMOUNT SEDIMENT TRANSPORTED ONTO PUBLIC ROADWAYS THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PUBLIC ROAD SURFACE, THE ROAD SHALL ''`> AFTER EACH RAINFALL AND MAINTAINED IN ACCORDANCE WITH THE VIRGINIA EROSION & ES-8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN SILT FENCE. BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY z SEDIMENT CONTROL HANDBOOK (VESCH). APPROVED WATER FILTERING DEVICE. A TEMPORARY SEDIMENT BARRIER CONSISTING OF A SYNTHETIC FILTER FABRIC STRETCHED ACROSS SHOVELING OR SWEEPING AND TRANSPORTING TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING O a ,_ CLEARING LIMITS SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER. � ES-9: THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES AND ATTACHED TO SUPPOR77NG POSTS AND ENTRENCHED. TO INTERCEPT AND DETAIN SMALL 0- z 3.07 STORM DRAIN INLET PROTECTION.- PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. 4. INSTALL THE INITIAL CONSTRUCTION MEASURES AS SHOWN ON THE EROSION CONTROL SHEETS THIS �� VDOT STANDARD STOP SIGN AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING CONSTRUCTION OPERATIONS IN ORDER TO U co-i- A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDING AREA AROUND A STORM DRAIN DROP ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS INCLUDES SILT FENCE AND SEDIMENT BASIN. MEASURES INTENDED TO TRAP SEDIMENT SHALL BE U Z) OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIAiTELY. PREVENT SEDIMENT FROM LEAVING THE SITE TO DECREASE 7NE VELOCITY OF SHEET FLOWS AND to z INLET OR CURB INLET. TO PREVENT SEDIMENT FROM ENTERING STORM DRAINAGE SYSTEMS CONSTRUCTED AS A FIRST STEP WITH ANY LAND DISTURBANCE ACTIVITY AND SHALL BE MADE FUNCTIONAL w - - - -zoa- - - - EXISTING CONTOUR PRIOR TO PERMANENT STABILIZATION OF THE DISTURBED AREA. INLET PROTECTION APPLIES LOW -TO -MODERATE LEVEL CHANNEL FLOWS THE SILT FENCE BARRIERS SHALL BE INSTALLED DOWN BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. a z WHERE STORM DRAIN INLETS ARE TO BE MADE OPERA TONAL BEFORE PERMANENT Ceneratt construction notes for Erosion mid Sediment Control plans SLOPE OF AREAS WITH MINIMAL GRADES TO FILTER SEDIMENT LADEN RUNOFF FROM SHEET FLOW AS 5. /N ADDITION TO ENSURING THAT THE PA VED CONSTRUCTION ENTRANCE /S INSTALLED, INSTALL ANY p 15 20o PROPOSED CONTOUR STABILIZA770N OF THE CORRESPONDING DISTURBED DRAINAGE AREA. INDICATED. THEY SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND MAINTAINED IN REMAINING EROSION CONTROL ITEMS AS SHOWN ON THE EROSION CONTROL PLAN. O U) 1. The plan approving authority must be notified ore week prior to the lyre-4o�nstruction ACCORDANCE WITH THE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK (VESCH). 6. ONCE ALL THE EROSION CONTROL I TEMS HAVE BEEN INSTALLED AS SHOWN ON THE EROSION CONTROL PLAN ~ > P 3.09 TEMPORARY DIVERSION DIKE. ( ) 240.55 PROPOSED SPOT ELEVATION conference, one weekprior to the corntnencement of lauddisturbing activity, and one week AND THE INSPECTOR HAS APPROVED THE EROSION CONTROL MEASURES, THE CONTRACTOR CAN BEGIN A TEMPORARY RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPING PERMANENT STABILIZATION. TBC DENOTES TOP/BACK OF CURB DISTURBED AREA. TO DIVERT STORM RUNOFF FROM UPSLOPE DRAINAGE AREAS AWAY FROM prior to UTILITY INSTALLATION OPERATIONS STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES 2. All erosion and sediment control measures will be constructed and maintained accordln- to THE ESTABLISHMENT OF PERENNIAL VEGETATIVE COVER ON DISTURBED AREAS BY PLANTING SEED. I� T/B DENOTES TOP OF BOX UNPROTECTED DISTURBED AREAS AND SLOPES TO A STABILIZED OUTLET. TO DIVERT SUCH AS DAMS, DIKES, AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION. TO REDUCE EROSION AND DECREASE SEDIMENT YIELD FROM DISTURBED AREAS TO PERMANENTLY > SEDIMENT -LADEN RUNOFF FROM A DISTURBED AREA TO A SEDIMENT -TRAPPING FACILITY SUCH minin�tltll standards arici specifications of the Virginia Erosion azci Sedlniemt Control 7. INSTALL GREY HERON ROAD. AS A SEDIMENT TRAP OR SEDIMENT BASIN. USE WHEREVER STORMWATER RUNOFF MUST BE Handbook and Virginia Regulations VR 625-02-W Erosion and Sediment Control STABILIZE DISTURBED AREAS !N A MANNER THAT IS ECONOMICAL, ADAPTABLE TO SITE CONDITIONS, 8. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN Uj � VIRGINIA EROSION &SEDIMENT CONTROL TEMPORARILY DIVERTED TO PROTECT DISTURBED AREAS AND SLOPES OR RETAIN SEDIMENT ON Regulations. DAYS AFTER FINAL GRADE /S REACHED ON ANY PORT/ON OF THE SITE. TEMPORARY SOIL STABILIZATION EROSION CONTROL AND ALLOWS SELEC77ON OF THE MOST APPROPRIATE PLANT MATERIALS. TO IMPROVE WILDLIFE HANDBOOK SPECIFICATION NUMBER S17E DURING CONSTRUCTION. THESE STRUCTURES GENERALLY HAVE A LIFE EXPECTANCY OF 18 3. All erosion and sediment control measures are to be placed prior to or as the step in HABITAT. TO ENHANCE NATURAL BEAUTY. UPON COMPLETION OF CONSTRUCTION AC77W77ES, ALL SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL * MONTHS OR LESS, WHICH CAN BE PROLONGED WITH PROPER MAINTENANCE. clearing. AREAS MLL RECEIVE A PERMANENT VEGETA7VE COVER. REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS PERMANENT STABILIZATION SHALL BE STB STRAW BAIL BARRIER 3.04 3.12 DIVERSION. 4. A copy of the approved erosion and sediment control plan shall be maintained on the site at TEMPORARY SEEDING: APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. A CHANNEL CONSTRUCTED ACROSS A SLOPE WITH A SUPPORTING EAR7HEN RIDGE ON THE all times. THE ESTABLISHMENT'OF A TEMPORARY VEGETA7VE COVER ON DISTURBED AREAS BY SEEDING WITH 9. ONCE THE SITE IS STABILIZED AND THE INSPECTOR HAS GIVEN APPROVAL, THE CONTRACTOR CAN REMOVE LOWER SIDE. TO REDUCE SLOPE LENGTH AND TO INTERCEPT AND DIVERT STORMWA TER 5 Prior to commencing land disturbing activities in areas other than indicated. on theseplansAPPROPRIATE RAPIDLY GROWING ANNUAL PLANTS TO REDUCE EROSION AND SEDIMENTA T70N BY THE EROSION CONTROL MEASURES AND CONVERT THE SEDIMENT BASIN TO A PERMANENT STORMWA TER DD DV TEMPORARY DIVERSION DIKE 3.09 RUNOFF TO STABILIZED OUTLETS AT NON -EROSIVE VELOCITIES APPLIES WHERE RUNOFF FROM (including, but not limited to, off -site borrow or waste areas), the contractor shall submit a MANAGEMENT FACILITY. NO ITEM SHALL BE REMOVED UNLESS THE UPSTREAM AREAS ARE STABILIZED AND STABILIZING DISTURBED AREAS THAT WILL NOT 13E BROUGHT TO FINAL GRADE FOR A PERIOD OF AREAS OF HIGHER ELEVA7ON MAY DAMAGE PROPERTY, CAUSE EROSION, OR INTERFERE WITH supplementary erosion control plan to the owner foe review and approval b)V the plan THE INSPECTOR GIVES PERMISSION. ST MORE THAN 30 DAYS TO REDUCE DAMAGE FROM SEDIMENT AND RUNOFF TO DOWNSTREAM OR TEMPORARY SEDIMENT TRAP J. 7NE ESTABLISHMENT OF VEGETA77ON ON LOWER AREAS, WHERE SURFACE AND/OR SHALLOW approving authority. 10. MAINTAIN ALL EROSION CONTROL MEASURES AS SPECIFIED IN THE VIRGINIA EROSION AND SEDIMENT O SUBSURFACE FLOW IS DAMAGING SLOPING UPLAND, AND WHERE THE SLOPE LENGTH NEEDS TO 6. The contractoris responsible for installation of ►►n additional erosion controol iiieasures OFF -SITE AREAS, AND TO PROVIDE PROTECTION TO BARE SOILS EXPOSED DURING CONS7RUC710N CONTROL HANDBOOK REMOVING ONLY WHEN APPROVED BY THE LOCAL PROGRAM ADMINISTRATOR IN BE REDUCED TO MINIMIZE SOIL LOSS. l r y UNTIL PERMANENT VEGETA77ON OR 07NER EROSION CONTROL MEASURES CAN BE ESTABLISHED. ' SB ® SEDIMENT BASIN 3.14 necessary to prevent erosion and sedllnentation as determined by the plan approving ACCORDANCE WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. DUST CONTROL: authority. 11. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER N 3.13 TEMPORARY SEDIMENT TRAP. REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBING, DEMOL17ION AND r' /P INLET PROTECT/ON 3.07 A TEMPORARY PONDING AREA FORMED BY CONSTRUC77NG AN EARTHEN EMBANKMENT W/77� A 7• All disturbed areas are to drain to approved sediment control measures at all times during FINAL S/TE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS O STONE OUTLET. TO DETAIN SEDIMENT -LADEN RUNOFF FROM SMALL DISTURBED AREAS LONG land disturbing activities and during site devOupnietrt until final stabilization is achieved. CONSTRUCTION AC77Vl77ES OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM ADMINISTRATOR. TRAPPED SEDIMENT AND THE DISTURBED ­i ENOUGH TO ALLOW THE MAJORITY OF THE SEDIMENT TO SETTLE OUT. USE BELOW DISTURBED g. Duringdewater n operations, water will be um ►.d into an < rovedfilteriu device, TO PREVENT SURFACE AND AIR MOVEMENT OF DUST FROM EXPOSED SOIL SURFACES AND REDUCE SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY o SF SILT FENCE 3.05 g ' O AREAS WHERE THE TOTAL CONTRIBUTING DRAINAGE AREA /S LESS THAN 3 ACRES, WHERE THE 9. 1h. contractor sha111t1 pee all erosion cviictpl rtP suceS perigtilPcillyallci after each runoff- THE PRESENCE OF AIRBORNE SUBSTANCES WHICH MAY PRESENT HEALTH HAZARDS, TRAFFIC SAFETY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. SEDIMENT TRAP W/LL BE USED NO LONGER THAN 18 MONTHS, AND IT MAY BE CONSTRUCTED producing rainfall event. Any necessary repairs or cleanup to maintain the effectiveness of PROBLEMS OR HARM ANIMAL OR PLANT LIFE. EITHER INDEPENDENTLY OR IN CONJUNCTION WITH A TEMPORARY DIVERS/ON DIKE. the erosion control devices shall be made immediately. DUST CONTROL MEASURES SHALL BE EMPLOYED TO PREVENT SURFACE AND AIR MOVEMENT of 00� CONSTRUCTION ENTRANCE 3.02 3.14 TEMPORARY SEDIMENT BASIN. 10. All fill material to be taken from an approved, designated borrow area. DUST DURING CONSTRUCTION. MEASURES EMPLOYED SHALL BE IN ACCORDANCE WI7H 7HE VESCH. A TEMPORARY BARRIER OR DAM WITH A CONTROLLED STORMWATER RELEASE STRUCTURE 11. All waste materials shall be taken to an approved waste area. Earth fill shall W iuert TEMPORARY DIVERSION DIKE: OCD CHECK DAM 3.20 FORMED BY CONSTRUCTING AN EMBANKMENT OF COMPACTED SOIL ACROSS A DRA/NAGEWAY. materials only, free of toots, stumps, wood, rubbish, and other debris. A RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPING DISTURBED AREA TEMPORARY SEEDING. � ' TO DETAIL SEDIMENT -LADEN RUNOFF FROM DISTURBED AREAS /N "WET" AND `DRY" STORAGE 12. Borrow or waste areas are to b. reclaimed Within 7 days of completion perfoning WHICH DIVERTS OFF -SITE RUNOFF AWAY FROM UNPROTECTED SLOPES AND TO A STABILIZED OUTLET, ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR EXTENDED PERIODS OF r LONG ENOUGH FOR THE MAJORITY of THE SEDIMENT TO SETTLE OUT. APPLIES BELOW Ordinance section 5.1.2,8. OR TO DIVERT SEDIMENT -LADEN RUNOFF TO A SEDIMENT TRAPPING STRUCTURE. MAXIMUM TIME SHALL BE SEEDED WITH FAST GERMINATING TEMPORARY VEGETATION t�_ FD TEMPORARY FILL DIVERS/ON J. DISTURBED AREAS WHERE THE TOTAL C0N7R/BU77NG DRAINAGE AREA IS EQUAL TO OR 13. All ittert materials shall, be transported in compliance with section 13-301 of the, Code of EFFECTIVE LIVE /S 18 MONTHS. 1MMED/A TEL Y FOLLOWING GRADING. SELECT/ON OF THE SEED MIXTURE WILL M GREATER THAN THREE ACRES. THERE MUST BE SUFFICIENT SPACE AND APPROPRIATE Albemarle. TOPOGRAPHY FOR THE CONSTRUCTION OF A TEMPORARY IMPOUNDMENT. ROCK CHECK DAMS.- DEPEND ON THE TIME OF YEAR AND WILL BE APPLIED TO DISTURBED ARES THAT L9 let. lorrow, fill or haste activity involving industrial -type power equipment shall be limited to clr Z S DIVERS/ON 3.12 the hours of 7:Ot}am to(7 m, SMALL, TEMPORARY STONE DAMS CONSTRUCTED ACROSS A DRAINAGE DITCH TO REDUCE THE WILL NOT BE BROUGHT TO FINAL GRADE WITHIN 30 DAYS. 3.18 OUTLET PROTECTION. VELOCITY OF CONCENTRATED FLOWS, REDUCING EROSION OF THE SWALE OR DITCH. LIMITED TO USE PLANTS SHOULD BE SELECTED APPROPRIATE TO THE SEASON AND SITE C7N Q S7RUCTURALLY LINED APRONS OR OTHER ACCEPTABLE ENERGY DISSIPATING DEVICES PLACED 15. Borrow, Fill or waste acti-vity shall be conducted in a safe manner than tr ains:sins lateralZIN SMALL OPEN CHANNELS WHICH DRAIN 10 ACRES OR LESS; SHOULD NOT BE USED IN LIVE N AT THE OUTLETS OF PIPES OR PAVED CHANNEL SECTIONS TO PREVENT SCOUR AT support, or order to minimize any hazard to persons, physical damage to adjacent laud and CONDITIONS FROM TABLES 3.31 B AND 3.31 C. NOTE THAT TABLE 3.31B PRESENTS PS PS PERMANENT SEEDING 3.32 STORMW47ER OUTLETS, TO PROTECT THE OUTLET STRUCTURE, AND TO MINIMIZE THE POTEN7IAL improvements, and damage to any public street because o slides, sinking; or collapse. STREAMS PLANTS WHICH CAN BE USED WITHOUT EXTENSIVE EVALUATION OF SITE O FOR DOWNSTREAM EROSION BY REDUCING THE VELOCITY AND ENERGY OF CONCENTRATED 16. ' he developer shall reserve the r1.ight to instill, maintain, remove -or convert to permanent STORM DRAIN INLET PR07EC770N. CONDITIONS; TABLE 3. 31 C PRESENTS MORE IN-DEPTH INFORMATION ON THE m STORMW47ER FLOWS. APPLICABLE TO THE OUTLETS OF ALL PIPES AND ENGINEERED CHANNEL stormwater management facilities where applicable all erosion control measures required THE INSTALLATION OF VARIOUS KINDS OF SEDIMENT TRAPPING MEASURES AROUND DROP INLETS OR PLANT MATERIALS TO �-- TO TOPSO/L/NG 3.30 SEC77ONS. by this plan. regardless of the sale of any.lot, unit, building or other portion of the property. CURB INLET STRUCTURES PRIOR TO PERMANENT STABILIZA7ON OF THE DISTURBED AREA; LIMITED TO TO CONITROL EROSION ON BARE SOIL SURFACES, PLANTS MUST BE ABLE TO O I 17. Temporary stabilization shall be (amporary seeding and mulching. Seeding is to be at 7a DRAINAGE AREAS NOT EXCEEDING ONE ACRE, AND NOT INTENDED TO CONTROL LARGE, 3.19 RiPRAP. GERMINATE AND GROW. SEEDBED PREPARATION IS ESSENTIAL. 0. e CULVERT INLET PROTEC770N 3.08 A PERMANENT, EROSION -RESISTANT GROUND COVER OF LARGE, LOOSE, ANGULAR STONE WITH Ibs/acre, and in the months of September to February to consist a 50/50 mix of Annual CONCENTRATED STORMWA7ER FLOWS N FILTER FABRIC OR GRANULAR UNDERUINING. TO PROTECT 7HE SOIL FROM THE EROSIVE Kyegrass and Cereal Winter Rye, or in March and April to consist of Annual Rye, or May TEMPORARY SEDIMENT TRAP. AN EVALUATION SHOULD BE CONDUCTED TO DETERMINE IF LIME IS NECESSARY 0! FORCES of CONCENTRATED RUNOFF, SLOW THE VELOCITY OF CONCEN7RATED RUNOFF WHILE through August to consist of German Millet. Straw.mulch is to be applied at 80lbs/100sf. A SMALL PONDING AREA, FORMED BY CONSTRUC7ING AN EARTHEN EMBANKMENT WITH A STONE FOR TEMPORARY SEEDING. TABLE 3.31A MAY BE USED TO DETERMINE THE 0 � V) ENHANCING THE POTENTIAL FOR INFILTRATION, AND To STABILIZE SLOPES W/TH SEEPAGE Alternatives are subject to approved by the County erosion. control inspector. ACTUAL NEED ALONG WITH SUGGESTED APPLICATION T/ON RA TES.• J DC DC DUST CONTROL 3.39 OUTLET ACROSS A DRAINAGE SWALE, TO DETAIN SEDIMENT -LADEN RUNOFF FROM SMALL DISTURBED Cal t� PROBLEMS, AND/OR NON -COHESIVE SOILS USE WHEREVER SOIL AND WATER INTERFACE AND 18. I'ermauent stabilization shall be ime and fertilize., permanent seeding, and mulch. AREAS FOR ENOUGH TIME TO ALLOW MOST TO THE SUSPENDED SOLIDS r0 SETTLE OUT. MAX/MUM W,��( THE SOIL CONDITIONS, WATER TURBULENCE AND VELOCITY, EXPECTED VEGETA77VE COVER, ETC., Agriculture applied. t N W Q rl grade. limestone shall W a lied at 90lbs/1000sf, incorporated the top 4-6 FERTILIZER SHALL BE APPLIED AS 600 LBS ACRE OF 10-20-10 14 LBS 1, 000 ARE SUCH THAT THE SOIL MAY ERODE UNDER THE DESIGN FLOW CONDITIONS EFFEC7IVE LIFE IS 18 MONTHS. / / inches of. soil. Fertilizer shall be applied tit 10001bs/acre and consist of a 10-20-10 nutrient F_ a TEMPORARY SLOPE DRAIN 3.15 TEMPORARY SEDIMENT BASIN: SQ. FT.,) OR EQUIVALENT NUTRIENTS LIME AND FERTILIZER SHALL BE Wmix. Permanent seeding shall be,applI at 1801bsfacre and consist of 5 '� Kentucky 31 or Qi W 3.2o ROCK CHECK DAMS.- INCORPORATED INTO THE TOP 2 TO 4 INCHES OF THE SOIL IF POSSIBLE. SMALL TEMPORARY STONE DAMS CONS 7RUCTED ACROSS A SWALE OR DRAINAGE DITCH. TO 'all Fescue. and 0-5°la Perennial Ryegrass or Kentucky Bluegrass Straw munch is to be A TEMPORARY BARRIER OR DAM WITH CONTROLLED STORMWATER RELEASE STRUCTURES WHICH !S REDUCE THE VELOCITY OF CONCENTRATED STORMWA TER FLOWS THEREBY REDUCING EROSION applied j approved b the Count errosion control FORMED BY CONSTRUCTING AN EMBANKMENT OF COMPACTED SOIL ACROSS A DRAINAGEWAY. IT IS IF THE AREA HAS BEEN RECENTLY LOOSENED OR DISTURBED NO FURTHER a !led at 801bs/lUOsf. Alternatives are subect to a y y SA SAFETY FENCE 3.01 OF THE SWALE OR DITCH. THIS PRACWCE ALSO 7RAPS SEDIMENT GENERATED FROM ADJACENT inspector. USED TO DETAIN SEDIMENT -LADEN RUNOFF FROM DRAINAGE AREAS 3 ACRES OR GREATER FOR ROUGHENING IS REQUIRED. WHEN THE AREA IS COMPACTED, CRUSTED, OR AREAS OR THE DITCH ITSELF, MAINLY BY PONDING OF THE STORMW47ER RUNOFF. THIS 19. Maintenance. All measures are to be inspected weekly and after each rainfall!. Any damage ENOUGH 77ME TO ALLOW MOST OF THE SUSPENDED SOLIDS TO SETTLE OUT. IT CAN BE HARDENED, THE SOIL SHALL BE LOOSENED BY D/SCING, RAKING, HARROWING, OR w O P y � LW - PRAC7TCE, UTILIZING ACOMB/NATION OIF STONE SIZES, IS LIMITED TO USE /N SMALL OPEN or clogging to structural; measures is to be repair im medialely. Silt traps are Ito be cleaned' CONSTRUCTED ONLY WHERE THERE IS SUFFICIENT SPACE AND APPROPR/A7E TOPOGRAPHY MAXIMUM OTHER ACCEPTABLE MEANS. TRACKING WITH BULLDOZER CLEATS IS MOST RW TEMPORARY RIGHT-OF-WAY 3.11 CHANNELS WHICH DRAIN 10 ACRES OR LESS. when %% of the wet storage volume is filled wifh sediment. All seededirreais are to be EFFEC77VE LIFE !S 18 MONTHS UNLESS DESIGNED AS A PERMANENT POND BY A QUALIFIED EFFECT/VE ON SANDY SO/LS THIS PRACTICE OFTEN CAUSES UNDUE COMPACTION " � j DIVERSION reseeded when necessary to achieve a good stand Of grass: Silt fence and divrersion dykes PROFESSIONAL. OF THE SOIL SURFACE, ESPECIALLY /N CLAYEY SO/LS, AND DOES NOT A/D I-" - 3.31 TEMPORARY SEEDING: which rue collecting sediment to half their height must be cl.aned. and repairced OUTLET PROTECTION. PLANT GROWTH AS EFFECT/ VEL Y AS OTHER METHODS OF SURFACE ROUGHENING. j immediatel THE INSTALLA7ON OF RIPRAP CHANNEL SEC77ONS AND/OR S77LLING BASINS BELOW STORM DRAIN SEED SHALL BE EVENLY APPLIED WITH A BROADCAST SEEDER, DRILL, W W 9 THE ESTABLISHMENT OF A TEMPORARY VEGETATIVE COVER ON DISTURBED AREAS BY SEEDING y ' WITH APPROPRIATE RAPIDLY GROWING ANNUAL PLANTS. TO REDUCE EROSION AND 20. All t.rn- 1-1 erosion a' .. sedimen1.t control measures are: to be removed withrin:30 days of OUTLETS TO REDUCE EROSION AND U - SED/MENTA77ON BY STABILIZING DISTURBED AREAS THAT WILL NOT BE BROUGHT TO FINAL final site stabilization, when measures are no longer needed, subject to approlval by the NDER CUT7rlG FROM SCOURING AT OUTLETS AND TO REDUCE CUL TIPAI CKER SEEDER OR HYDROSEEDER. SMALL GRAINS SHALL BE PLANTED NO �- FLOW VELOCITIES BEFORE STORMWATER ENTERS RECEIVING CHANNELS BELOW THESE OUTLETS. Q TABLE 331-A GRADE FOR A PERIOD OF MORE THAN .30 DAYS. TO REDUCE DAMAGE FROM SEDIMENT AND County erosion control inspector. •1. MORE THAN 1� INCHES DEEP. SMALL SEEDS, SUCH AS KENTUCKY BLUEGRASS,t9 P-+ RUNOFF TO DOWNSTREAM OR OFF -SITE AREAS, AND TO PROVIDE PROTECTION TO BARE SOILS 21. 'Fhls pkrti shall be:void if the owner does not obtain a permit within 1 year oF' fhe date of CULVERT INLET PROTECTION: I Z - Llh[1N REQUIREMENTS EXPOSED DURING CONSTRUCTION UNTIL PERMANENT VEGETA77ON OR OTHER EROSION CONTROL A SEDIMENT FILTER LOCATED AT THE INLET TO STORM SEWER CULVERTS WHICH PREVENTS SEDIMENT SHOULD BE PLANTED NO MORE THAN INCH DEEP. OTHER GRASSES AND O approval.. (Water' Protection Ordinauc. section 17-2040.) J FOR TEMPORARY SITES MEASURES CAN BE ESTABLISHED. 22. permanent V.g.tation 11 shall be in on all denuded areas within nine (9) raonths after :. FROM ENTERING, ACCUMULATING /N AND BEING TRANSFERRED BY THE CULVERT. /T ALSO PROVIDES LEGUMES SHOULD BE PLANTED FROM 4 INCH TO � DEEP. " Z O • 3.32 PERMANENT STABILIZATION: the date the land disturbing activity commenced.. (Water Protection Ordinaacle section 17- EROSION CONTROL AT CULVERTS DURING THE PHASE OF A PROJECT WHERE ELEVATIONS AND SEEDIN�S MADE /N FALL FOR WINTER COVER AND DURING HOT AND DRY Recoriilzienrlett pplication THE ESTABLISHMENT OF PERENNIAL VEL�ETA77VE COVER ON DISTURBED AREAS BY PLAN77NG 207B) DRAINAGE PATTERNS ARE CHANGING, CAUSING ORIGINAL CONTROL MEASURES TO BE INEFFECTIVE. SUMMER MONTHS SHALL BE MULCHED ACCORDING TO MULCHING, STD. &SPEC. � � (- pH Test Q�',Agriculturatl Limestone SEED. TO REDUCE EROSION AND DECREASE SEDIMENT YIELD FROM DISTURBED AREAS TO SAFETY FENCE 3.35, EXCEPT THAT HYDROMULCHES (FIBER MULCH) WILL NOT BE CONSIDERED x W z 3 PERMANENTLY STABILIZE DISTURBED AREAS /N A MANNER THAT IS ECONOMICAL, ADAPTABLE TO SOIL DESCRIPTION A PROT ECTIVE BARRIER INSTALLED TO PROHIBIT UNDESIRABLE USE OF AN EROSION CONTROL ADEQUATE. STRAW MULCH SHOULD BE USED DURING THESE PERIODS. .j z below 4.2 tons of acre SITE CONDITIONS, AND ALLOWS SELECT7(ON OF THE MOST APPROPRIATE PLANT MATERIALS TO p IMPROVE W/LDL/FE HABITAT TO ENHAA4CE NATURAL BEAUTY. UPON COMPLE7ON OF AREAS WHICH FAIL TO ESTABLISH VEGETA TI VE COVER ADEQUATE TO PREVENT U U 4 2 to 5.2 2 tons par acre CONSTRUCTION ACT/W77ES, ALL AREAS WILL RECEIVE A PERMANENT VEGETA7VE COVER. 62B -NASON SILT LOAM-2% TO 7q SLOPES. SOILS OF THE NASON SERIES ARE PERMANENT STABILIZATION RILL EROSION WILL BE RE -SEEDED AS SOON AS SUCH AREAS ARE IDENTIFIED. t PERMANENT SEEDING WILL BE APPLIED TO ALL DISTURBED AREAS AS � 3.35 MULCHING.- DEEP AND WELL DRAINED. THEY ARE FINE, MIXED, SEMIACTIVE, HAVE � z S. to 6 l ton per acre APPLICATION OF PLANT RESIDUES OR OTHER SUITABLE MATERIALS TO THE SOIL SURFACE. TO MEDIUM TO RAPID RUNOFF AND MODERATE PERMEABILITY. THEY ARE PER THE PERMANENT STABILIZATION OF THIS EROSION & SEDIMENT ►�4 W PREVENT EROSION BY PR07EC77NG THE' SOIL SURFACE FROM RAINDROP IMPACT AND REDUCING TYPICALLY LOCATED ON NEARLY LEVEL TO VERY STEEP UPLANDS CONTROL NARRATIVE. w Z -. THE VELOCITY OF OVERLAND FLOW. TO FOSTER THE GROWTH OF VEGETA77ON BY INCREASING AFTER CONSTRUCTION IS COMPLETED ALL DISTURBED AREAS OF THE AVAILABLE MOISTURE AND PROVIDING INSULA77ON AGAINST EXTREME HEAT AND COLD. AREAS 62C -NASON SILT LOAM-79' TO 15q SLOPES. SOILS OF THE NASON SERIES ARE � t--t Source: Va. DSWC ° SITE WILL BE LIMED, FERTILIZED, AND SEEDED AS PER CURRENT VDOT �--t `- WHICH HAVE BEEN PERMANENTLY SEEDED SHOULD BE MULCHED IMMEDIATELY FOLLOWING DEEP AND WELL DRAINED. THEY ARE FINE, MIXED, SEMIACTIVE•, HAVE STORMWATER MANAGEMENT.' W � ` SEEDING. AREAS WHICH CANNOT BE SEEDED BECAUSE OF 7NE SEASON SHOULD BE MULCHED STANDARDS THIS SHALL CONSIST OF THE FOLLOWING; USING ORGANIC MULCH. MULCH MAY BE USED TOGE7HER WITH PLAN77NGS OF TREES, SHRUBS, MEDIUM TO RAPID RUNOFF AND MODERATE PERMEABILITY. THEY ARE C� W TYPICALLY LOCATED ON NEARLY LEVEL TO VERY STEEP UPLANDS TOPSOIL - 2" DEPTH, LIME - 2 TONS/ACRE, ( f) `: rABLE3.31-8 OR CERTAIN GROUND COVERS WHICH DO NOT PROVIDE ADEQUATE Solt STABILIZATION BY FERTILIZER - 600 LBS/ACRE OF 15-30-15 THE (IMPERVIOUS AREA FROM THE ROADWAY AND ASSUMPTIVE LOTS ,,,��// i 7HEMSELVES, CAN BE USED IN CONJUN(CRON WITH TEMPORARY SEEDING. SHALL DRAIN TO A PROPOSED EXTENDED DETENTION BASIN. SEE P-+ LL i ACCEPTABLE TEMPORARY SEEDING PLANT MATERIALS SEED - ERNST 5311 CONSERVATION SEED MIX - ERNMX-114 (45 THE STORMWA TER MANAGEMENT SHEETS FOR MORE INFORMA TION. w W � t 3.37 TREES SHRUBS VINES &GROUND) COVERS: >•_ LBS/ACRE PENNLAWN CREEPING RED FESCUE 37.5 LBS/ACRE ARGILS Z -QUICK REFERENCE FOR ALL REGIONS' STABILIZING DISTURBED AREAS BY ESTAIBLISHING VEGETATTVE COVER WITH TREES, SHRUBS, , W r ^ - VINES, OR GROUND COVERS TO AID INI STABILIZING SOIL IN AREAS WHERE VEGETATION OVER KENTUCKY BLUEGRASS, 37.5 LBS/ACRE PARK KENTUCKY BLUEGRASS, 15 � V J _Q Rate THAN TURF IS PREFERRED, TO PROVIDE FOOD AND SHEL7ER FOR WILDLIFE WHERE WILDLIFE Planting Dates Species lbs. acre HABITAT IS DESIRABLE. APPLIES /N AREAS WHERE TURF ESTABLISHMENT /S DIFFICULT, ON LBS/ACRE ANNUAL RYEGRASS & 15 LBS/ACRE PLEASURE PERENNIAL STEEP OR ROCKY SLOPES WHERE MOWING /S NOT FEASIBLE, WHERE ORNAMENTALS ARE AFTER THESE AREAS ARE STABILIZED, THEY WILL BE MOWED AND W U) Sept. I - Feb. 15 50150 Mix of DESIRABLE FOR LANDSCAPING PURPOSES, AND WHERE WOODY PLANTS ARE DESIRABLE FOR MAINTAINED ON A REGULAR BASIS CL a Annual Ryegrass SOIL CONSER VA 77ON, OR TO ESTABLISH WILDLIFE HABITAT. MAINTENANCE.' I � W CL � ([olium multi-tlorum) IN GENERAL, ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE & so -Too 3 TREE PRESERVATION AND PRorECT1oN: CHECKED DAILY AND AFTER EACH SIGNIFICANT RAINFALL. SPECIFIC w W Cereal (Winter) Rya PROTEC710N OF DESIRABLE TREES FROM MECHANICAL OR OTHER INJURY DURING LAND (Secale cereale) DISTURBING AND CONSTRUCTION AC77WTY. TO ENSURE THE SURVIVAL OF DESIRABLE TREES ATTENTION WILL BE GIVEN TO THE FOLLOWING ITEMS. P� "j- WHERE THEY WILL BE EFFECTIVE FOR EROSION AND SEDIMENT CONTROL, WATERSHED A. SEDIMENT BASINS AND/OR TRAPS WILL BE CLEANED AND P4 Feb. 16 - Apr. 30 Annual Ryegrass 60 - 100 PROTECTION, LANDSCAPE BEAUTIFICATION, DUST AND POLLUTION CONTROL, NO/SE REDUCTION, MAINTAINED IN ACCORDANCE WITH THE VIRGINIA EROSION & SEDIMENT 0 ,,� �- (1-olium multi-florum) SHADE AND OTHER ENVIRONMENTAL BENEFITS WHILE THE LAND IS BEING CONVERTED FROM CONTROL HANDBOOK. r� FOREST TO URBAN -TYPE USES. APPLIES IN 7REE-INHABITED AREAS SUBJECT TO LAND V DISTURBING ACTIVITIES B. ALL GRAVEL OUTLETS WILL BE CHECKED REGULARLY FOR May 1 -Aug 31 German Millet 50 SEDIMENT BUILDUP THAT WILL PREVENT PROPER DRAINAGE. IF THE (Setariaitalica) 3.39 Dusr CONTROL: GRAVEL IS CLOGGED BY SEDIMENT, THE GRAVEL WILL BE REMOVED AND U 0REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURB/NG, DEMOLITION AND LU LU CONSTRUCTION ACTIVITIES TO PREVENT SURFACE AND AIR MOVEMENT OF DUST FROM CLEANED, OR IT WILL BE REPLACED. N o uj EXPOSED SOIL SURFACES AND REDUCE THE PRESENCE OF AIRBORNE SUBSTANCES WHICH MAY C. ALL SILT FENCE BARRIERS WILL BE CHECKED REGULARLY FOR 2 = Source: Va. DSWC PRESENT HEALTH HAZARDS, TRAFFIC SAFETY PROBLEMS OR HARM ANIMAL OR PLANT LIFE. UNDERMINING OR DETERIORATION OF THE FABRIC AND REPAIRED AS °-I to DUST CONTROL MEASURES SHALL BE EMPLOYED TO PREVENT SURFACE AND AIR MOVEMENT OF REQUIRED. SEDIMENT SHALL BE REMOVED WHEN THE LEVEL OF SEDIMENT JOB NO. DUST DURING CONSTRUCTION. MEASURES EMPLOYED SHALL BE IN ACCORDANCE WITH THE DEPOSITION REACHED HALF WAY TO THE TOP OF THE BARRIER. 112054 VESCH. D. ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO SEE THA T A GOOD STAND IS MAINTAINED. AREAS SHOULD BE FERTILIZED AND SCALE RESEEDED AS NEEDED. NSA ISHEE7T N0. `o (j z U E 0 w V)LLI 'z °z rw o ') z J J J n O U 7 4 5 0 .. 7 O s(0 c 0 = U 5 C 0 v a-. 3 �, I U) =Q) 7 0- U x j ar 7 N 7 :)- 7_ U :3 O U :�C 3 2 M _C: E V) L,C Li O U 5L_ o it " n C K ° :j 6 i 0 o -0 >, 0 U U 0 O L L L CL a U U >0 W U ZI o U a) U Q)� L, c Q) .., 0 0 c N- c 0 Q)-0 U ._ O (n O 7 U U m -C U_ ' U j U)Q) U O C) U) U 1 _C 0 3 0 0 r= m U O 0- 0- L 13 Q) ri N T I- 0 i LH 0 (1N R. COLLINS'Z o. 35791 \ \ \ ? \ — m,.•,w \ \ \ -- --- — — I ION 890 x U) w 0 _NOTE: CONTRA`CTORTO PROVIDE SIGNS AS - _\ _\ `\ \\ ' / / / \ \ \� �/� m U 1 SHOWN -AROUND �HE SEDIMENT -BA IN STATING: \ \ VJ v SOIL LINE T 1P ` I / DRAT AGE AR A'- - "DANGER CzoICK SAND DOWN TENTER" — \\ / / �� v' Ln z TO SEDIMENT BASIN \\ , .,\ — _ ^\ \ / / \ ,\ �` O o g u AREA =2212AC\ \ `\ / / 4I I\ \ \ \`\�a� \ t ` ORANGE ANGE\SAFETY \I \\ Lij Lu = 0.4 I;ENCE TO ENCOMPASS4 MICN. SEDIMENT BASIN Lu LIMITS OF DIS�RBANC360 W0 =4 23C PROPOSED BAFFLES CPg840 / CLASS I RIPRAP O UT D Lz� N— o— Ts C ' I I \6 II I I 98\,.............. ,....::: .:::_:::-:�:::�� .: ' � ".... � O_ \ :: :GREY,H:ONR: �:\ SOIL _:: YPE(TY \ / N N \ \ ,-i PC x I D - - I C -4- i 0 I rn �CE \ � 3 \ - \ -I o \ X \ 1 1 \ t S 1 _ \ \ \,1 .... \ \ MIN.12X7o \ \ \ \ \ RE \ -i \ \L9 OP''� NOTE: THIS CONSTRUCTION ENTRANCE SHALL BE f- "9 �: ``, \ `� ` - I , ' h /IJACKING INSTALLED, OPERATED, AND MAINTAINED BY THE -- - - , CONTRACTOR. ALL CONSTRUCTION TRAFFIC \ :::. \ OP \ C� CLASS I RIPR P OUTFACE \ CLASS I RIPRAP OUTFALL ` I I Wz- W?- L-6 D-z - \ \ \ W1= W2= 2 L=21 D-2 3 � I ., i SHALL UTILIZE THIS CONSTRUCTION ENTRANCE. 1- � ,\ \ 3.75�, 9+• 5 � � ` � \ � Ikl _` ----- ._ \ .\ \ (� NO OTHER ENTRANCES TO CARROLL CREEK ROAD SHALL BE UTILIZED AND ALL OTHER _ \ \::;.:::.. `\ I ' ` ' { 1 I \ ` + I \ \OP \ \ \\ oc I ENTRANCES TO CARROLL CREEK ROAD SHALL BE J I ' 1 / Y E __ :. ' CLASS I RIPRAP OUTFALL `\ _ W BARRICADED TO PREVENT MUD FROM BEING , \ t- W1=7• , W2=18.5, L=16, D=2 \ \ - I TRACKED ONTO CARROLL CREEK ROAD.Ps ' I PROPOSED CONTRACTOR ♦\ ....:.I I / I I I I WIRE TAGING AREA \ \ \\ \ \\ \ \ \ \ \ \ �-�J /B l N PROPOSED LOCATION OF STOCKPILE. STOCKPILE SHALL BE ENCOMPASSED -.BY SILT FENCE ATALL TIMES S lw_� PI �:�:�.,�.....: + NOTES: \ 1. THERE IS MINIMAL TREE CLEARING ASSOCIATED WITH THIS -- ---- --- "` ,- / / ' � r--- ,-- '�.\ •\ ��`°°° r--- �\ , I I ::::.:::�:5. . � \� 111111= \ `� \ \PROJECT. THE LIMITS OF DISTURBANCE FROM THIS SECTION INCLUDES WOODED AREA. THE TOTAL LIMITS OF DISTURBANCE IS 4.23 AC. \ �\\ ►i 2. CONTRACTOR TO NOTE AND FLAG LOCATION OF FLOOD PLAIN AND WETLANDS. FILLING OR CONSTRUCTION ACTIVITY \ W .. � �, : \ \ MAY NOT OCCUR WITHIN THE LIMITS OF THE FLOODPLAIN.Lu CONSTRUCTION ACTIVITY WITHIN THE STREAM BUFFER SHALL '`• �—+ BE LIMITED TO THE SANITARY SEWER INSTALLATION & \ \ _ t) SEDIMENT BASIN OUTFALL. NO OTHER ACTIVITY IS ALLOWED \ \ \ \ \ \ \ \WITHIN THE STREAM BUFFER. NO TREE CLEARING SHALL \ \ \ OCCUR WITHIN THE LIMITS OF THE FLOODPLAIN. . SEE SHEET 9 FOR DETAILS ON THE SEDIMENT BASIN. \ \ TSB a:. i \ \ \ \ \ \ I I U gig ul \::: ::::::: Xlklli 11MITS OF' DISTURBNCE i• / I / \ \ \, \ C/� / / / // I - \ \ \l \ ✓ / / \ \ \ \\ \\ \ \ \ SF \\ w � \ GRAFFIIC SCALE 50 / / 0 /25 5 100 \ \ 200 \ \ \ \ \ \ \ \ \ \ O ( IN FEET / a. 0 a. 06 © z 0 ce O�/ LL � z Lu 0. U © z C W '' z H �..i. J uj V W I—� o < H ! W` I WI Ln Lu CL Lu Lu -17 JOB NO. 112054 SCALE 1"=50' SHEET NO. s O U a-- ll 13 O ll � � 3 _� -(A 1., -1992 TABLE 3.32-D SITE SPECIFIC SEEDING MIXTURES FOW PIEDMONT AREA Total Lis, Per Acre >I�1.>G?�fi,ltT1: ire Lawn Commercial or Residential 175.200 lbs. - Kentucky 31 or Turf -Type. Tall Fescue 95-100% - Improved Perennial Ryegrass 0-5% - Kentucky Bluegrass 0-5 vo High -:Maintenance Lawn 200-250 lbs. - Kentctclry 31 or Turf -"Type Tall Fescue 100% Generat Slope (3:1 or less) - Kentucky 31 Fcscuoe 128 lt>s, Iced Top Grass 2 lbs: - Seasonal Nurse Crop * 20 lbs, 150 lbs. I. ow-Malatenance Slope (Steeper than M - Kentucky 31 Fescue 108 lbs. Red Top Grass 2 lbs. - Seasonal Nurse Crop * 20 lbs. - Crownvetch .20 ,lbs. 1.50 lbs. Use seasonal nurse crop in accordance with seeding dates as stated below: February loth through April ....................... Annual Rye May 1st through August 15th .. , ...... - ........... Foxtail Millet August 16th through October ...................... Annual Rye November through February 15th . . . . ............ � . Winter Rye *` Substitute Sericea lespedeza for Crownvetch cast of Farrnvillc, Va. (May through September use hulled Sericea, all other periods, use unbulled Sericea). If Fla.tpea is used in lieu: of Crownvetch, increase rate to 30 lbs./acre. All legume seed must be properly inoculated. Weeping Love,grass may be added to any slope or -low-maintenance ml;% during warmer seeding periods; add 10-20 lbs./acre in mixes. 2"x4" WOODEN FRAME T)RnP IIVI FT A TTACH FILTER FA BR AME TO STAKES OR POST EXTEND I T INTO TREt I' EL FABRIC ORlENTATIONND Cll T �)C_Al('F ,,A THER XCESS EXCA VA TED 1 T CORNERS BACKFILLED COMPACTED AKEMARLE CONSTRUCTION • . NCE TO SEDIMENT BASIN • COURSE PAVEMENT M-..T�..,..�r,.,; IVERSI DITCH AGGREGATE BASE EXIS NG GROUND 70' MIN. EX. CURS OR ASPHALT PAVED WASHRACK EDGE OF PAV'T 3 t 2% 2.2 12' MIN_ EXISTING PAVEMENT 2r -•- DIVERSION DITCH PDsntvE D MINIMUM WIDTH AT TO SEDIMENT TRAPPING DEVICE DESIGN WATER ELEVATION IS 4.0' PLAN VIEW MUST EXTEND FULL WIDTH OF INGRESS AND EGRESS OPERATION SET 1 1 /2" WATER HYDRANT WITH FROST -' 12' MIN. PROOF HYDRANT 3' ABOVE GRADE AND 4' 2% OFF EDGE OF PAVEMENT. SECTION A -A NOTE: A MINIMUM WATER TRAP OF 1" IS REQUIRED WITH A MINIMUM WASH HOSE DIA. OF 1.5" 5 PAVED TEMP CONST EWR 9 SCU N.T.S. )EN STAKE L POST 'TH = 5' MIN. SIL T FENCE sF (WITHOUT WIRE SUPPORT) 3.05-2 NO SCALE DROP INLET PROTECTION 1. SET POSTS AND EXCAVATE A 4"X4" TRENCH UPSLOPE ALONG THE LINE NO SCALE OF POSTS I FLOW 4' Compacted Soil Non-Erodable Liner 18" min. F-Flow 4.5' min. SOURCE: VA. DSWC PLATE 3.09-1 TEMPORARY DIVERSION DIKE SHEETS OF 4'x8 x�' EXTERIOR PLYWOOD OR EQUIVALENT 6" i i i i i i RISER CREST ELEVA TION 4' POSTS MIN. SIZE 4" SQUARE nR .5" Rni lAln AFT AT 8LEAST 3INTO THE GROUND u SEDIMENT BASIN BAFFLE DETAIL NO SCALE 2. STAPLE WIRE FENCING TO THE POSTS. J. ATTACH THE FILTER FABRIC TO THE WIRE FENCE AND EXTEND IT INTO THE TRENCH. sF SIL T FENCE (WITH WIRE SUPPORT) NO SCALE 4. BACKFILL AND COMPACT THE EXCA VA TED SOIL. FLOW G EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. Table 15: Sediment Basin design (Spec 3.14) TI-I O� � SCOTT R. COLLINS'� No. 35791 111. ZONAL E Z J O FQ N G a � � m Z w o z O z g U) J (� w z N wet storage required (cy) (67*DA) 1482.0 design high water (ft) 359.00 Uj dewatering orifice elevation (ft) 354:87 top of dam (ft) 360.00�/ wet storage provided at this elevation (cy) 1482.0 top width of dam (ft) 10.0 Iie available volume before cleanout (cy) (34*DA) 752.1 bottom of basin (ft) 351.00 cleanout elevation (ft) 353.07 approx. bottom dimensions: 93' x 142' distance from cleanout to orifice (ft) (> 1') 1.80 upstream face slope: 2:1 downstream face slope: 3:1 dry storage: dry storage required (cy)'(67'*DA) 1462.0 battles: YES principle spillway crest (ft) 357,90 length of flow, L (ft) 110 dry storage provided at this elevation (cy) 1482.0 effective width, We (ft) 140 diameter of dewatering orifice (in) 8.0 L / We (baffles not required if > 2) 0.79 diameter of flexible tubing (in) (o6fice+2") 10.0 collars: YES o runoff: depth of water at spillway crest (ft) 6.90 C (use 0.45 ror bare earth) 0.4 slope of upstreamn face (Z:1) 2:1 tc (min) 14 slope of barrel (Sb) 1.03% 12yr 3.6 Q 2yr 31.85 length of barrel in saturated zone (Ls) 46.34 125yr 6.0 Q 25yr 58.40 number collars required 2 dimension of collars 5.3 x 5.3 principle spillway: r-+ available head (ft) 1.0 emergency spillway: YES diameter user (in) 42, required capacity (Q25-Qp) (cfs) 26.5 M spillway capacity, Qp (cfs) 31:85 bottom width (ft) 12 M diameter trash rack (in) 60 slope of exit channel (ft/ft) 6% z C�'\ barrel length (ft) 97 minimum length of exit channel (ft) 22 N head on barrel through embankment (ft) 10.00 crest of spillway (ft) 359,00 diameter of barrel (in) 30 M GRAPHIC SCALE 20 0 10 �2Q 40 a 1 \ 0 n, IN FEET OZ ) �� N ' \ \ 1 inch = 20 ft. �� Sediment Basin #1 Design drainage area (acres) 22.12 basin volumes: (using 2' contour intervals) DESIOU HIGH WATER elevation (ft) contour area (so volume (cy) (2S-V. SraRu C",) 351.00 8,900 0 352.00 9,723 344.8 4= 354,00 11,444 1127.9 •err- , 356.00 13,266 2042.2 358.00 15,447 3104.6 " nr ` sst 360.00 18,606 4364.0 iQ ?# i•Y.� ACRE} .. Kassa eater ='rani General construction notes for Stormwater Management plans -- —� - NOTE: / 1. All dams and constructed fill to be within 95/o o of maximum dry density THE FACILITIES ARE DESIGNED FOR A MINIMUM OF A o HOUR DRAWDOWN WITH 2x / � __-- _._-- _--- / THE WATER QUALITY VOLUME. FOR EVIDENCE OF THE WATER QUALITY TH O�I� —� /o and 2Of optimum moisture content. All fill material to be approved by — / 1 / / pp -' TREATMENT, WATER QUALITY VOLUMES & DETENTION COMPLIANCE, PLEASE SEE a geotechnical engineer. A geotechnical engineer is to be present during THIS SHEET AND THE FOLLOWING SWM DETAILS &CALCULATIONS. construction of dams. _ —, �/ / / / SCOTT R. COLLINS� 2. Pipe and riserjoints are to be watertight within stormwater / \ \ PLEASE NOTE THE SOIL AROUND THE SPILLWAYS ARE TO BEAT 95% COMPACTION 3 management facilities. _ �-, _ ��, \ WITH AN IMPERVIOUS CORE AND CUT-OFF TRENCH. THE EMERGENCY SPILLWAYS No. 35791 - / / / , - / �/ ARE T BE EARTHEN. THE FOREBAY SPILLWAYS SHALL BE CONSTRUCTED OF 'po / / _ 3. For temporary sediment traps or basins which are to be converted to �� �/ ' GABION BASKETS WITH 5/ STONE STONE ON THE UPHILL SIDE OF THE WEIR. permanent stormwater management facilities; conversion is not to take place until the site is stabilized, and i � I� \ � ALL LOW -FLOW ORIFICES ARE DESIGNED FORA 30-HOUR DRAWDOWN TIME FOR IpNAL permission has been obtained from the County erosion control inspector. \ TWO TIMES THE WATER QUALITY VOLUME IN ACCORDANCE WITH DCR'S VSMH. \ / / Water Quality Volume Requirements. \ ♦ _' f ' I I \ / \ EXTENDED DETENTION BASIN REQUIREMENTS: \ ♦ / ' I { I Minimum Forebay Volume= 0.25 inches per impervious square acre i 1 _ I I I I I I I \ \ \ / i Forebay Depth to range from 4'-6' \\ \ \ \ \ / / / / ✓ J ' I I \ \ \ \ `\ \ \ Impervious Area= 163,295 sf \ \ \\\ / / ✓ �, / / '�\ \ ` \ \�\ Minimum Forebay Volume- 3,402 of 1 Minimum Water Quality Volume= 0.5 inches per impervious square acre / \ \ \ \ \ \ \ \ \ \ \ Minimum Water Quality Volume= \\ 9;472 of \ \ \ \\\ \ ' - / J/ _ ` \ \ \ \ \ \ 1, Minimum Water Quality Volume= 18,944 of _ / _ ' / / \ \ \ \ \ - \ U) Elevation Corresponding to 2x WQV- 353.55 It Elevation i — / w Extended Detention Basin #1 —_ — --- / \ \ \ \ \ o \� �\ a g U \ \� \\\ \\\\ \\ \ \ \ � '`"" �- _ / •''____- -�'� � ----- �-- �-_V__� / \ \ ``- � � / \ Area of Total Area of � / � / / Elevation Volume Volume Fo(eba` (c@ Elevation{itj Basin'( (c� U)--�to ,/ � --__ __ ---� / � --, z Contours (so Contours / �/LU z = \K 352 543 D 350 1,673 0' L ¢ aw. _ 354 929 1455 352 6, 7,48 !/ \ \ \ \ � \ \ / / / /// — - -_ _ / ' • `- / - 350 1,420 3,787 354 8,622 22,315 / �/' -_ -` _ . - `�� - / / z w 356 11,051 41,07 / ''� '_ -- - _ _ ♦ / / / / / / / / / I > > _ / ) LU --��/ f/ /. / - _ -`' _ \ / -- - - _ 358 14,571 G718 / / �_ / ! w / / / / �/ / // / , '' - _ \ ` _ 360 18.606 100,573 / // / /� _` _' - _ `' _ • _ `- / / / / / / / > / UJ --.- __._ � f l / l / �.� / � \ __ - `_ __ �_ � \ �, _.._ � � � � _,� � ----- ____ � I l / 1, / �.� / � \ •� - _ _._ � \ ` _ -_ , t. � � ! - � t �- �— y\ — — / ) l l l l (/i _ —. \ poi -- � �- ,---- /� / I I I I ;. -\�` �. ___ _� \,. -- \ -- _,_ -, ---- �, ` i- ,,,- ,____ ----- / � / III I � �\�•.� •_. _ _, � \ .-••_ ---- �•` \ .-• \�._ \ CD r11 ,, --- \ � / / � III I I I �\. -� .� \ \ � � __ �1 _, '•� ', \ \ - --- \ � / / / III I I I �� ,-\ .� �- \ \ � � - •.-- �- \ \` � \ \ \ � _ .---- � � III III I ` � • • � \ `` `_ - .� _\--__ __ -- � - .\ ,`. �` ` 1 - \ \ \ `` � -- � � III. III I � � . , \ \. \- ---� , __ _ -- � __ `\ \, .. � � \ \ \ \ � � / / / / ' / 7-7--__ IT D.A. TO SWM ---- •_-_.._ _--- ..,., _- --- �' � l / / l / / f � -`' / � '� _ ~`�,�` `.� � 1 -- -- -_.�..-'DETENTION BASIN Tc hrs S\ E�T FLOW Tc = oi6 \ \ \ \ , / \ ~` \ I ~ - `�'- I I S\ EET FLOW Tc =oi6 \ \ \ • \ 3 \. , ` ♦ i L9 � �� ` ♦ t / ----- -_ ` - � CHANNEL FLOW' Tc = o.o / ~ � / \ CW = O.LFO CHANNEL FLOW, Tc = 0.07 \ \ \ \� \ \ / �� \ \ ` �— / - _ _ I 7 IPOST-DEVELOPMENT Tc = 0.23 \ �� „` \ `` \ \ \ �� _ _/ I ( IPOST-DEVELOPMENT Tc = 0.23� ILO 7 t t \ \ \ / ) ! / ' ` \, '•i' \. ` `\ `, \ ___� / / / D.A. TO SWM \ DETENTION BASIN / ' __.--A' \ •� \ \ '. / / / ' ( I � \ , ` / I / ��� _ \ . \. \ ~ / / / II I ( 1 21.32ac. Tc = 0.23 hrs , I \ \\�►�\ \, t - _ \\ \� \ ' // , I ' I ' / / I ' \ �/ ' I 1 �� ���` VARIABLE WIDTH_ I / ' SW CW - 0.30 M EASEMENT T l O,g \ \. \ \ .•�\ \ \\ �`/ f I � � � , 1 / / 1 I � I I 1 I \ \ � \ \ � ( \ �_. \ \ \ � 1 / I \ I / / I � I I I \ I ,.. � \ \ \ 1`� � / ( \ `_ �• � � / / , fro 408- --\ 44 \ \ \ \ 352 �� .� / / ) \ \ i ! 400 _ PROPOSED EXTENDED DETENTION`\ \ \ ` � _ `�• \ `\ — � )) \ .•,_ 398 . --`� — � 1 / �`^ � � \, STORMWATER MANAGEMENT BASIN ::;::. _PROPOSED EXTENDED STORMWATER MANAGEMENT BASIN \ % , \ \� SEE SHEET 11 FOR DESIGN INFO \ S \ SEE SHEET 11 FOR DESIGN INF 3 1 I \ \ \ \ \ ` \ I :: 98 \ :•._._:. REY:HERON. RO...::>::;;::;;;;:::<%<:;s;.;•;::.;�. N.............-�T Preserve at Glenmore Road Plan Short VeisionBMPComputations For Worksheets 2-t3 ` / \ \ \ \\ \ \\ \\\ \ \\ ���-- — , \ �\ `�-__� ` .... 39 \` \ �\ \\\ \\ \ L9 Albemarle County Water ProtecGarrOrdinance Modified Simple Method \ \ \ \\ ,� \ \ \ \ \ \ ` _ \ \ �Y -__ - .::.:.:.:...:.:.. q\ . \�� \ \ \ \ ` - \ \ / J \ \ \ \ \ \ \ \ Lr Plan: F-Xtended Detention Basin Water, Resources Area Development Area -`� ` ' W \ \ \ \ \\ \\\ \ \, / \ - \ \ \ \ \ \ \`,�F} `ti.... s;:\\� `\ LOT9 \ \\\� Prepafer. AML, PP Date; 17-Oct-12 "� _ \ 1 \, a \ \ Project Drainage Area Designation Drainage Area to Detention Basin ` CY \ \ \ ftft \ I I , � 0 , \ , \ \ \ \ \\ L I r I L storm pollutant export in pounds, L = [P(Pj)R`M j [ C(A)2.72 j eQ_, ,own MEN\ \ I —_ '�0�--- --__ ♦ ::\ .;\ f I / I I I I ' \ \ \ \ Rv mean runoff coefficient. Rv 0 0. 05 + 0.009(I) Pi small storm correction Notor. 0. f/ J� \ percent imperiousness '� I I I T ` ` \\ \\� \ \ \ \ \` \ \ , \ \ _1 `P �/ r ♦ \` ? :::::. \ P annual precipitation, A3" in Albemarle p drainage area A..�.- I ....,.. 22:12 \ ♦ ( I I �\ \ \ \ \ I \ 00 f �c9 t� \ LOT 11\ A project area in acres in subject 9r ephosphorus�. .:..: ' ......... \ 1 1 I I I I \ \\ \ \ `\\ \ \\ \ i \ ` ` I I '• LOT 5 / I f , \ \ \ \ \ \ �\ •,.. C pollutant concentration, mg!Lor ppm target ` + { ;.. f factor applied to,RR I ` �� \\ \ �\�`� \\ \ Ul LIMIhS OF\ �� _ 1 \ I I / ` ` - J \ \ ' ` ( \ i \ \ :i::;•. I \ / \\ , A( \\\ \ LIMITS OFF V required treatment wlume in cy, 0.V over imperv, area - A(I)43500(M/12y27 ' I \ \ \\\ WPO BUFFER / , 1 / I I \ . �\ ' _ ` � :.,.. ,io ACCESS PATH \ RR required removal, L(post)-fx!,(pre) �� o ^\, \ \ \ \ GRADE SHALL WPO BUFFER \\ \ %RR rernovai efficiency . RR1001L(post) � � � \\ \ \ \ \ � / � �::.: -� \ \ \ i � / I � ./ _� .\ \ ' \ ` I :<':;� / � NOT EXCEED Zo% _ \, Impervious Cover Computation (valuesin feet& square feet) - - _..__..__....__._........__...___._.._...._._-.._............. \ \ \ � \ �� / � \ \ \ \ \\ \\\ � � � J I �_ � � � \ / / \ \ '..::c;. \ VAR. WIDTH item l \ \ \ \ \ \ I ::.:>: pre development Area ;post development _ - Area I ' \ \ \ \ \\ \ \ \ \\ �� / \ I / :L' ;` ' \ > \ \\ \ \ \ \\ .:..:. DRAINAGE &SWM ACCESS EASEMENT` Length Width_ subtotal length Width subtotal -_ \ \ I I I `'� ) \ ` ti`: \ \ \ \ Roadway 139241 38007 Length Width subtotal Length Width _ subtotal Sidewalk. i .,•...m.. \ \ / \ i I \ I II \ Area ---._ '. r---_ .,8 areas Area / ----- tt x 0,70 = '`� I \\ 1 I I I / L? T 6 I t................. \ 1 I I I - _.__......_.-..... X 0.70= , 2 � _._.— � \ \ , � ...__._.. •...--- �•' Q \ ' is{:ii:ii?: ci6F.i5ii5:�'ii: F.ii:i�:Y:•.''v:5iii I Structures Area no. subtotal [_t Area no. subtotal \\ \ \\ \ ' :':;;::;;::: 2074' !Future 12528a \ I \\ / J - \ Z' - �` \ ` ' I I \ is houses / / ._.— \ \\ \ 1 S \ I I \ \\ \\ \ / / /--.-_ ` \ / / \ \ \ \ \';:'•i:'•�` I I \ \ \\ \ .. .. .,,.. ` ?074- — 12528a \ \ \ \ _ \:::::<;>: >: I ILO 12� \ \ \ \ \ Grass Area !Grass - -- - 912701 x 0.08=-----.----------73016`- ---- ---- - --- - 800252yx 0.08-- ----- --------.. -- 84020 Actltie crop land Area Area I IX 025 I Other lmpernous Areas .. / \\\ ( I r- __ -LOT 4 `� \�`' ,� \ \ \ Cr AP �11 s c ZE _ C ImpervwusCaver .,. / / / � \ \ \ / I ( \ ) � \ \ / // / 80 0 400.26 Rv(post},...,„.::.. V .......I / / \ \ \, \ \ \ \ \ / / / / / \ \ \ \\\ - // � / I \ \ � I I I /— \ \ \ \ \ ✓ �/ .',\\ \ \ \ \ \ �- / I / % J / I , / / I \ \ \ \ \ New Development (For Development Areas, existing impervious cover <= 20%°) C f I t (pre) " RX(pce) L(prej L(postj� RR °I° RR f Area Type PKIT17.&20.36�I- 2.5112°0 Development Area PO/PRE—DEVELOPM—DI EVELOP, IMi Ef Nt , TI \ RT I IN FEET t LOT 13 i/ch 80 /fL. .................. . 1 D.A. (acres) Cw Tc (hrs) Q2 (cfs) Q10 (cfs) PRE -DEVELOPMENT 21.32 0.30 0.23 23.03 31.34 POST -DEVELOPMENT 22.12 0.40 0.23 31.85 43.36 m JOB NO. 112054 SCALE if/ =80' SHEET NO. 10 FIGURE. 3.07 - la E-herded I.1elentaon Basin - Plam _", iUximurn PYlWhiq ' Fxter led Deterltit7n EAwded DetenNorl E19wJt`tarl �,, �A'4I1�IIrl �'9r(tfai u#rUCt1Jr@ W, hueal Fotslray, t L44 itoo Mel r a fr. LauJ �.�1(jirlg (w) ' �. � I s ' �Flel6d �,raflfdailYZIREIRGi ",• �ti t -. S xryi�;(� , �tk G�rltr�I) _ moft0flarm IkMh Earthen Pond tamer 4 � esate� r WIM&it FC(CE43p hwrs4g Carr } Ira a wfluriveld Neribw Chaninel w/,Wap Met PratecUoo FIGURE 3.01-lla ilolnugeneulls Embankments wl,.Seepage Controts 4rnoger1e04iS fill y/i;•�e�. :�/� 4' min ///j I'� Cut off tranch-4 below suitableI ( I material Soil or rock L - - - - - - - - - - - J TYPICAL HOMOGENEOUS EMBANKMENT Coars3 fi�fr Perforated collector 'roan s o Foundation drain FOUNDATION DRAIN c:\3-01-lo fill or gravel BLANKET DRAIN Cfrwn" dram Sand, 4rrnet or rock d,aal ar#kt Rock or gravel R«a taa drain •`.Transition filter Transition filter CHIMNEY DRAIN TOE DRAIN solli'ce: SC5 Ettghree)-ing Field rV illwat 3.01 - 3 Technical Bulletin T Minimum Standard 3.02 a 113' Nro Farad hwt attr.ctwd riCJa 3l8. 1A4tcner e �ft] � 9-t/0 lie. harm 000�IT,)� r j � o. Isometric �S 1}4' Imp' AtAtR w1k4 to 3N-1 HDPs iruatwAlAtkc Kith •, • Ca a-1/0 h411. aad t/4 plat. M"cr z aaxod W Pkra 00 Saixuaas Rao. our aRual 000 WWT 0000 .� '.i... • "Tto w1rA aAtlaaal Put* MOT std. aa#,a. m-! (4 #tituk) HAPk pCruetarsl pi ua w1W Z- d hal.'s aril t 4' plate S6CElO1t .01utigot.red by inetYs Safut;vaK Jtw. our aged /a- ctim hula ,'n to HIa'� ^ .F.vie'Ye1,llorl. arlllae BMP DEBRIS CAGE 1 Y00Y Ertl 6f-I 1 ------ ODMB � PLASTIC zo SOLt11IONS P.O. Box 430 Flubdw 11a INC. d40-72t-4w% aax.Aksil�-,at.Unt �ormwater Management Standard Dimensions 24 30 48 58 , 34 1.49 ZT 33112 6a 72 37It, 2.28 30 37 60 72 41 2.26 36 44 e0 72 48 2.22 42 51 72 86 55 3.16 48 55 84 100 a2 427 54 Co 112 84 100 70 1l2 420 60 72 96 114 76 6.48 66 8011, 96 '114 841/2 6.39 72 8a le8 128 90 6.83 79 94 4Z 126 147 98 112 8.97 84 100 126 141 104 6.90 906 Typ. y,:atTi7ed 1 It T! t��it ti t ti tt 1 ri t A - OpBcrta6 -I^ -6• a Vent Framer & Grate Sid. Cast in Top Stab Plan View 1 AnVionex Cap O.D. hooxh Dianne 0�� I 111 I -I N (1.) AntbVod-A doO:ar (Cap and Nser) hlarufacWred h accurdanca krttn AZTIA c4.7a. Section A -A (2.) Dlnrxasbns sabiacC la p nrl9 t a Val aU9115 OrAv Tti9 C4T81. (3.) Idat area (Area betmon de•4ca I.D. and riser O.D.) is oreaYar Utah outlet area. (Area of rlsar I.D.) (4.) sw reinforcement to be ASTM A015 44 ban 0 a' E.Vl. C rvmfbtrenbal reirlereernant to be Ayer = t 190A W 2 k 6 W2.6 xYr2.6 V,MF mirjfnunL Malodor lucpelves:f�=4,WOp.at.fy=30,OU0p.si, caiwete wvaru+orb=4ksi. Caxxelacvvsrovetralrracetnad --SascaTa (CCC)t)=1-.udess naiad. FB dGnen=ors s42yectm�towsb4a (5.) 01.1 Framer & Grata is wrd, ra rot 4a` 1.G. risers arn! farya,r. aptc r oo tWerafraa. -. nna - r[lia VA S6TIlYJA2 14.1 OAM a3 1506 "DxHaIi$oiE PrecastAntl-Vortex Device (Cap and Riser) \ VDOT STD. EC-1, CL. II, TYPE B -- / \ RIPRAP-W GEOTEXTILE FILTER \ FABRIC UNDFSRLAYMENT. \� PROPOSED VAR. WIDTH SWM ,� DURING THE CONVERSION FRONLA \ / FACILITY -EASEMENT --_ � `368 SEDIMENT BASIN TO A SWM \ \ FACILITY,THE CONTRACTOR SHAL\ \ REMOVEUNSUITABLE SOIL AND \ ENSUE FACILITY IS BUILT IN 364 ACCORDANT E WITH THESE PLANS \ MIN. WATER Ql.1,ALITY VOLUME REQUIRED (2xWQVK=1.8,943cf. \ 358 -� \ ` �. WATER QUALITY VOLUME \ \ I 356 - PROVIDED= 41,937cf \� \ \ \ 354 \ \ 352 2:1 \\ \ \ 0 z" CL. III RCP MUL- I -STAGE RISER` _ VDOT STD. EC-1, �L. II, TYPE RIM ELEV. = 357.9 w/ FOU 06" RIP[�AP w/ GEOTEXTILE FILTE - _ \ W �Qa FABRIC UNDERLg --. 350 \ `� MID-FLOIFICES ELEV.=356.0' YMENT. k \ , ,) & ONE-0i" LOW,FLOW ORIFICE@' (W1=3.75,\Wz=9.25, L=34, D =2 354•V.= ELEo' , .� \ �-- - C NTRACTOR� ALL INSTA L \ 'EMERGENCY GRASS SPILLWAY Q�H / _ \ WEI�t wk3:1 SIDE SLOPES AT SWALE TO ENSURE POSITI�E AGE TO RISER\ TRUCTURE ELEV.= 359.' DRAIN �\ \ \ UP _ \ \ T \ \\ EXISTING CRITICAL \\ \ II I II I II I II I II I- \ SLOPES O REMAIN \ \ z�fOREBAYTqP OF DAM\ \ ELEV.= 356.00 \` FOB BAY & 5 WIDE FOREBAY SPIL\ AY SHALL \ BE CQNSTRUCT\ED OF G;TION BAS ETS WITH \ \ \ VDOT # g COARSE GGREGATE ON THE,UPHILL \ SIDE OF THE WEI2 & CLASS\] RIPRAP OWN THE 5 DOWNHILL SIDE QF THE WEIR. GEOTEXTILE \ \FILTER F1 BRIC UNDERLAY ANT SHALL BE \ \ INSTALLED. WEIR SHALL\�AVE = IDE SLORES \ \ \ \ w/ A CEEST ELEV=356.0'. 5'(W)x17.5'() \ \ \ 2\5'x 28' FOREBAY BOTTOM \ N. FOREBAY COMBINED OLUME F�EQ'D=14c 2cf. \ \ \ \ \ TOT�L FOREBAY VOLUME PROVIDED= 3,787cf \ \ \ \ \ VtDOT STD EC-1, CLII, TYPE B \ \ \ \ \ \ \ RIf RAP w/ gEOTEXTILE FILTER_ w FABRIC UNDERLi YMENT. \ \ \ \ \ o (V•/1=� 75, W2:9.25'I L=z;, D =2') \ \ \ ' \ t \ ` VDOT STD. ES-1 / t \ GRA HIC \��J1CAL , 2qI\ \ 0 10 I \ 20 I 40 I � ` 80 \ t \ � t � T \ \ \ ( IN �EET 1, inch 20 TRASH RACKS SHALL BE INSTALLED ON ALL ORIFICES PER VSMH- SEE THIS SHEET FOR DETAILS PERFORATED PIPE. SEE DETAIL ON THIS SHEET. BASIN TOP OF DAM WIDTH= 10' AT AN ELEVA TION= 360.00 TOP OF FOREBA Y DAM WIDTH= 2' AT AN \ ELEVA TION= 356.00 SPILLWAY CREST - ELEVA 77I0N= 359.00 HANSON CONCRETE ANTI- VORTEX IRA SHRACK C �R --- r- WIDE FLAT BE1�1 AT THE TOP OF 10 THE EMBANKM NT SHALL SERVE A,5 A STORMWATEFYMANAGEMENT ACCESS MAINTEf ANCE PATH r 30" CL. III RCP/BARREL�- 3 VDOT STD/EC-1, CL. II, TYPE B RIPRgP/w/ GEOTEXTILE FILTER \ FABRIC UNDERLAYMENT. \ /(WI=7.5', Wz=18', L=16', D =2') \ 1o' TOP O�\DAM ELE .= 36o.bo -TOP OF DAM ELEV.= 360.00 1,--12' WIDE GRASS WEIR OUTFALL CHANNEL W/ J. 1 SIDE SLOPES -042" CL. III RCP MULTI -STAGE RISER RIM ELEV = 357.9 w/ FOUR-06" MID-FLOI•Y ORIFICES ELEV.=356.0' & ONE-01" LOK--FLOW ORIFICE ® ELEV = 354.00 ' CE COEFF. = 0.6 3O" CL. 111 RCP BARREL 98LF@19 IN IN= 350.00' INV. OUT= 349.00' RISER FOOTING-j PRINCIPLE SPILLWAY NOT _'O SCALE) TOP OF DAM WlD TH= 10' AT AN ELEVA TION= 360.00 1.00 OF FREEBOARD DURING THE 100- YR STORM EVENT 1 WEIR COEFF. = 3.3 12' WEIR COEFF. = 3.3 5' FOREBA Y SPILLWAY EMERGENCY SPILL WA Y ELEVA TION= 359.0'L GRASS LINED ELEVA TION= 352 SPILL WA Y FOREBAYSPILLWAYS EVIERGENCYSPILLWAY NTS NTS 2 & 10- YEAR STORM EVENTS DO NOT CREST THE EMERGENCY SPILL WA Y i SWM FACILITY .SCALE." 1 "--20' SCREW CAP 6" PVC PIPE WITH DRILLED HOLES FOR - PERFORATION. SEE DETAIL BELOW. SCREW CAP AT BOTTOM FOR DRAINING/CLEANING PURPOSES ONLY. CAP SHALL REMAIN CLOSED DURING NORMAL OPERATIONS. 90- ELBOW SCREW CAP RISER STRUCTURE NOTE.• CONTRACTOR SHALL ANCHOR PERFORATED STANDPIPE BY PLACING RIP -RAP AT THE BASE OF THE PIPE. PERFORATED STANDPIPE SHALL ALSO BE PERMANENTL Y FASTENED TO RISER. WATER TIGHT SCREW CAP AT TOP. CAP ELEV.= 2xWQV ELEV MIN. (TOP OF CAP=356.09 PERFORATION SHALL EXTEND FROM THE TOP OF THE SCREW CAP TO IMMEDIATELY ABOVE THE LOWER SCREW CAP. THE LOWER SCREW CAP SHALL BE PLACED AT THE BOTTOM OF THE BASIN's FLOOR. BOTTOM OF PERFORATED PIPE SHALL BE IMMEDIATELY ABOVE THE LOWER SCREW CAP, WHICH SHALL BE AT THE BASIN' s FLOOR. - (BASIN FLOOR ELEV.=350) (BOTTOM OF PERFORA7ON ELEV.=350.75) MIN. #ATER QUALITY VOLUME REQUIRED (2xWQV)= 18, 943cf. #rATER QUALITY VOLUME PROVIDED FOR 30-HR. .DRAOTO)YN= 41, 937cf MIN. FOREBAY COMBINED VOLUME REQ'D= 3,40Rof. TOTAL FOREBAY VOLUME PROVIDED= 3.787cf 2' WIDE FOREBA Y TOP OF DAM ELEV. = 356.00 ��oTHo,� O � O SCOTT R. COLLINSrZ U No. 35791 ZONAL E �N 0 PERFORATED PIPE NOT TO SCALE W (a U W 10-YR # S.E.=356.21 100-YR A' S.E.=357.01 HANSON CONCRETE NTI- VORTEX TRASHRACK PONDING DEPTH BO TTOM OF ORIFICE COEFF. = 0.6 FOREBA Y ELEV. 352.0 FOREBAY & 5' WIDE FOREBAY SPILLWAY SHALL BE CONSTRUCTED OF GABION BOTTOM OF DE1EN770 BASKETS WITH VDOT It3 COARSE BASIN= 350.00 CL. III RCP AGGREGATE ON THE UPHILL SIDE OF THE MUL T-STAGE RISER. WEIR & CLASS I RIPRAP ON THE DOWNHILL SEE THIS SHEET FOR 30" CL. 111 RCP SIDE OF THE WEIR. GEOTEXTILE FILTER BARREL FABRIC UNDERLAYMENT SHALL BE DETAILS. g8 LF 1q INSTALLED. WEIR CREST ELEV.= 356.00' INV. IN= 350.00' INV. OUT= 349.00' E'XTE'NDE'D DETENTION BASIN NTS In t9 i O z z- x Uj W U -� 1 V Q Ul w t F--t , t ' �/ t f z%.,.. G� L 10' WIDE TOP OF DAM w Q ELEV.= 360.00' w LU WEIR ELEV. = 359.00 �---� 12' WIDE GRASS WEIR � / 0 OUTFALL CHANNEL W/ �+- E--- 3. 1 SIDE SLOPES MAX. EMBANKMENT w *- HT. =10' (460-450) Uj W 1. _ \ v .... \ O 0 � w _ 0 _ MIN. 8' WIDE @ TOP & (" 10' DEEP IMPERVIOUS JOB NO. CORE & CUTOFF 112054 TRENCH WITH 1:1 SIDE SLOPES. SEE DETAIL ON SCALE THIS SHEET FOR lit=201 - ADDITIONAL INFORMATION. SHEET NO.