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WPO201900053 Plan - VSMP 2019-10-25
V5MF PLAN FOR LEGEND EXIST NEW DESCRIPTION 165 TC x 125 TC TOP OF CURB ELEVATION 165 x 125 SPOT ELEVATION 165TW x 125TW TOP OF WALL ELEVATION 165BW x 125BW BOTTOM OF WALL ELEVATION & BENCHMARK m STORM SEWER RD RD ROOF DRAIN SEWER LINE s"w s"w WATER LINE GAS GAS GAS LINE GHE OHE OVERHEAD ELECTRIC WIRE UGE UGe UNDERGROUND ELECTRIC -OHr OHT OVERHEAD TELEPHONE LINE -UGT UGT UNDERGROUND TELEPHONE LINE D I- DRAIN INLET (DI) 0 0 STORM/SANITARY MANHOLE C C PLUG ev ®V WATER VALVE & BOX ♦ 4- FIRE HYDRANT ® ®" WATER METER ♦� F� LIGHT POLE f f UTILITY POLE PROPERTY LINE - - - - ADJACENT PROPERTY LINE VACATED PROPERTY LINE BUILDING SETBACK PARKING SETBACK ECOVILLAGE CHARLOTTE5VILLE TMP OG 100-00-00-2 1000 WFO 201900053 RIO DISTRICT, AL15EMARLE COUNTY, VIRGINIA VICINITY MAP SCALE: 1"=500' r �r Charlottesville High Schocill Stadium Tayiors Apito Body Shop SITE�� -iT AdVaWage Home Conitstling �h rlattesvldle A z 0 .. r P 5 rr' SHEET INDEX SANITARY EASEMENT -- GRADING EASEMENT C I - COVER SHEET DRAINAGE EASEMENT C2 - EX. CONDITIONS UTILITY EASEMENT * DEMO PLAN - WATER EASEMENT C3 - 51TE LAYOUT ACCESS EASEMENT C4 - GRADING PLAN _ STORM DRAINAGE EASEMENT C5 - UTILITY PLAN CG - UTILITY PLAN TREE LINE C7 - E5CP NARRATIVE -•--•- FENCE C 8 - E 5 C P PHASE I STREAM C9 - E5CP PHASE 2 C 10 - ESCP PHASE 3 312 12 - INTERVAL CONTOUR C I I - ESCP DETAILS 300- oo- INDEX CONTOUR C 1 2 - ESCP DETAILS CG-2 CG-2 STANDARD 6" CURB C 13 - 5TORM PROEI LE5 CG-6 CG-6 COMBINATION 6" CURB & GUTTER C 14 - VSMP DETAILS C 15 - VSMP DETAILS a CONCRETE PAVEMENT / SIDEWALK RIPRAP ASPHALT GRASS EC-2 MATTING EC-3 MATTING WETLAND 10 10 PARKING COUNT I1111111 I1'1111I CROSSWALK HANDICAP ACCESSIBLE AISLE EN /FN CG-12 HANDICAP PARKING NOTE: THE SIZE OF THE SYMBOLS MAY VARY FROM WHAT IS SHOWN. IMAGE PROVIDED BY GOOGLE MAPS OWNER / DEVELOPER OWNER/DEVELOPER: ECOVILLAGE HOLDING INC 480 RIO ROAD EAST CHARLOTTESVILLE VA, 22901 MAGISTERIAL DISTRICT RIO ZONING R4 RESIDENTIAL SOURCE OF TITLE DB 4582 PG 174 TMP 06100-00-00-21000 BENCHMARK IRON & CAP BENCHMARKS SET THROUGHOUT SITE. SITE DATUM NAVD88. SOURCE OF BOUNDARY & TOPO BOUNDARY AND TOPOGRAPHIC INFO FOR TMP 61-21 FROM A FIELD SURVEY PERFORMED BY ROGER W. RAY & ASSOC. INC ON AUG. 23, 2018. BOUNDARY AND TOPOGRAPHIC INFO FOR TMP 61-A1A (OFFSITE PARCEL) FROM A FIELD SURVEY PERFORMED BY NIXON LAND SURVEYING, LLC ON DEC. 12, 2016. BUILDING HEIGHT 35' BY RIGHT PROPOSED THREE STORY UNITS (VARIABLE HEIGHTS 35' OR LESS) SETBACKS 5-25' FRONT SETBACK 20' REAR SETBACK 5-10' SIDE SETBACK LIGHTING NO OUTDOOR LIGHTING IS PROPOSED ON THE INITIAL SITE DEVELOPMENT PLAN. TRASH REMOVAL LOCATION OF TRASH TOTER STORAGE NOTED ON SITE LAYOUT (C3) TRIP GENERATION USE DESCRIPTION ITE Qty in out total in out total Townhomes(Mid-Rise) 221 27 2 7 9 7 4 11 Single Family Homes 210 11 2 6 8 7 4 11 22 SLOPES THIS SITE CONTAINS 4,199 SF OF MANAGED STEEP SLOPES AND 41,772 SF OF PRESERVED SLOPES PER FIELD SURVEY. 9,866 SF OF PRESERVED SLOPES OVERLAY WAS SURVEYED AT LESS THAN 15% AND DO NOT QUALIFY AS PRESERVED SLOPES. GENERAL CONSTRUCTION NOTES FOR STORMWATER MANAGEMENT PLANS 1. ALL DAMS AND CONSTRUCTED FILL TO BE WITHIN 95% OF MAXIMUM DRY DENSITY AND 2% OF OPTIMUM MOISTURE CONTENT. ALL FILL MATERIAL TO BE APPROVED BY A GEOTECHNICAL ENGINEER. A GEOTECHNICAL ENGINEER IS TO BE PRESENT DURING CONSTRUCTION OF DAMS. 2. PIPE AND RISER JOINTS ARE TO BE WATERTIGHT WITHIN STORMWATER MANAGEMENT FACILITIES. 3. FOR TEMPORARY SEDIMENT TRAPS OR BASINS WHICH ARE TO BE CONVERTED TO PERMANENT STORMWATER MANAGEMENT FACILITIES; CONVERSION IS NOT TO TAKE PLACE UNTIL THE SITE IS STABILIZED, AND PERMISSION HAS BEEN OBTAINED FROM THE COUNTY EROSION CONTROL INSPECTOR. GENERAL CONSTRUCTION NOTES 1. PRIOR TO ANY CONSTRUCTION WITHIN ANY EXISTING PUBLIC RIGHT-OF-WAY, INCLUDING CONNECTION TO ANY EXISTING ROAD, A PERMIT 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 DISCREPANCIES 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 IN 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 MAXIMUM ALLOWABLE SLOPE IS 2:1 (HORIZONTAL: VERTICAL). WHERE REASONABLY OBTAINABLE, LESSER SLOPES OF 3:1 OR BETTER ARE TO BE ACHIEVED. 6. PAVED, RIP -RAP OR STABILIZATION MAT LINED DITCH MAY 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 III. 9. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR THE CONSTRUCTION INDUSTRY (29 CFR PART 1926). EXISTING USE I� 2 SINGLE FAMILY HOMES PROPOSED USE 25 TOWNHOME UNITS & 11 SINGLE FAMILY HOMES PROPOSED: 38 UNITS TOTAL RESIDENTIAL DENSITY: 38 UNITS / 6.53 AC = 5.51 DU/ACRE SITE AREA=6.53 AC (INCLUDES INTERIOR LOT TO BE ADDED TO PARENT PARCEL) R4 DENSITY: 4 UNITS/AC = 6.53 X 4 = 26.1 UNITS BASE COUNT. U M. HI P DENSITY BONUSES: No 183 SEC. 15.4.1: 10% AREA PRESERVED OPEN SPACE: 5% OF 26.1 = 1.3 UNITS ADD'L. 0` 1 SEC. 15.4.2: 6% AREA DEDICATED TO PUBLIC USE: 12% OF 26.1 = SEC. 15.4.3: 50% OF UNITS AS AFFORDABLE UNITS: 30% OF 26.1 3.1 UNITS ADD'L. = 7.8 UNITS ADD'L. q1 Cl, TOTAL COUNT: 26.1+1.3+1.3+7.8 = 38.3 UNITS, AWAL LAND USE SCHEDULE '41. 4W EXISTING AREA % PROPOSED AREA % BUILDING 3,605 SF 1.3% BUILDING 35,830 SF 12.6% PAVEMENT 18,175 SF 6.4% PAVEMENT 39,204 SF 13.8% TOTAL IMPERVIOUS 21,782 SF 7.7% SIDEWALK 23,847 SF 8.4% OPEN SPACE 262,507 SF 92.3% TOTAL IMPERVIOUS 98,881 SF 34.8% TOTAL= 284,289 SF (6.53 AC.) OPEN SPACE 185,408 SF 65.2% TOTAL= 284,289 SF (6.53 AC.) LIMITS OF DISTURBANCE: 5.90 AC WATERSHEDS THIS SITE LIES WITHIN THE MEADOW CREEK WATERSHED. [T� o PARKING W U U REQUIRED PARKING: 75 SPACES co RESIDENTIAL 2 SPACES/UNITS PER UNIT = 72 SPACES o TOURIST/TRANSIENT LODGING: 1 FOR EACH OF 3 ROOMS = 3 SPACES PARKING PROVIDED: 75 SPACES W -64 STANDARD SURFACE SPACES FOR RESIDENTS (INCLUDES 2 HC VAN SPACES) a -8 SPACES IN DRIVEWAYS FOR 8 UNITS O -3 SPACES PROVIDED FOR TOURIST/TRANSIENT LODGING (INCLUDS 2 HC VAN SPACES) \ rn FLOOD ZONE �.J o N � N ACCORDING TO THE FEMA FLOOD INSURANCE RATE MAP, EFFECTIVE DATE FEBRUARY 4, 2005 (COMMUNITY PANEL 51003CO287D), THIS PROPERTY DOES NOT LIE IN A ZONE A 100-YEAR FLOOD PLAIN. GENERAL CONSTRUCTION NOTES FOR EROSION AND SEDIMENT CONTROL PLANS 1. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. 2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS. 3. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING. 4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE AT ALL TIMES. 5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF -SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY. 6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. 7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. 8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE. 9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. 10. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA. 11. ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS. 12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION PER ZONING ORDINANCE SECTION 5.1.28. 13. ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13-301 OF THE CODE OF ALBEMARLE. 14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO THE HOURS OF T OOAM TO 9: OOPM. 15. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAT MAINTAINS LATERAL SUPPORT, OR ORDER TO MINIMIZE ANY HAZARD TO PERSONS, PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS, AND DAMAGE TO ANY PUBLIC STREET BECAUSE 0 SLIDES, SINKING, OR COLLAPSE. 16. THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR CONVERT TO PERMANENT STORMWATER MANAGEMENT FACILITIES WHERE APPLICABLE ALL EROSION CONTROL MEASURES REQUIRED BY THIS PLAN REGARDLESS OF THE SALE OF ANY LOT, UNIT, BUILDING OR OTHER PORTION OF THE PROPERTY. 17. TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING IS TO BE AT 75 LBS/ACRE, AND IN THE MONTHS OF SEPTEMBER TO FEBRUARY TO CONSIST A 50/50 MIX OF ANNUAL RYEGRASS AND CEREAL WINTER RYE, OR IN MARCH AND APRIL TO CONSIST OF ANNUAL RYE, OR MAY THROUGH AUGUST TO CONSIST OF GERMAN MILLET. STRAW MULCH IS TO BE APPLIED AT 80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVED BY THE COUNTY EROSION CONTROL INSPECTOR. 18. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND MULCH. AGRICULTURAL GRADE LIMESTONE SHALL BE APPLIED AT 90LBS/1000SF, INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL. FERTILIZER SHALL BE APPLIED AT 1000LBS/ACRE AND CONSIST OF A 10-20-10 NUTRIENT MIX. PERMANENT SEEDING SHALL BE APPLIED AT 180LBS/ACRE AND CONSIST OF 95% KENTUCKY 31 OR TALL FESCUE AND 0-5% PERENNIAL RYEGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH IS TO BE APPLIED AT 80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVED BY THE COUNTY EROSION CONTROL INSPECTOR. 19. MAINTENANCE: ALL MEASURES ARE TO BE INSPECTED WEEKLY AND AFTER EACH RAINFALL. ANY DAMAGE OR CLOGGING TO STRUCTURAL MEASURES IS TO BE REPAIRED IMMEDIATELY. SILT TRAPS ARE TO BE CLEANED WHEN 50% OF THE WET STORAGE VOLUME IS FILLED WITH SEDIMENT. ALL SEEDED AREAS ARE TO BE RESEEDED WHEN NECESSARY TO ACHIEVE A GOOD STAND OF GRASS. SILT FENCE AND DIVERSION DYKES WHICH ARE COLLECTING SEDIMENT TO HALF THEIR HEIGHT MUST BE CLEANED AND REPAIRED IMMEDIATELY. 20. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE REMOVED WITHIN 30 DAYS OF FINAL SITE STABILIZATION, WHEN MEASURES ARE NO LONGER NEEDED, SUBJECT TO APPROVAL BY THE COUNTY EROSION CONTROL INSPECTOR. 21. THIS PLAN SHALL BE VOID IF THE OWNER DOES NOT OBTAIN A PERMIT WITHIN 1 YEAR OF THE DATE OF APPROVAL. (WATER PROTECTION ORDINANCE SECTION 17-204G.) 22. PERMANENT VEGETATION SHALL BE INSTALLED ON ALL DENUDED AREAS WITHIN NINE (9) MONTHS AFTER THE DATE THE LAND DISTURBING ACTIVITY COMMENCED. (WATER PROTECTION ORDINANCE SECTION 17-207B) 00 0. 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W \�� ., I / /���E"� 3'.13 / \ (f1 \ , 1 I ,C�,9� F" / PARCEL A-1 o� / �� 1JI \ p i \k, - _ _ RWSA WATER EASEMENT / TM#610-188B _I___1-I ` -i ll o I yc�7jc3CO ILLAGE MOLDINS Yf� /� i `� , - �W - SRW-ARV-16 o SPAAR, ALBERT PETER III OR �� , rr i I / I /'// r� \ II ➢ o I �o ' o / - _ / ' - _- -_ _ LISA RUSS I I w 45�2 PG f 74- / o / I n yW D.B 2063 P. 15 II�� I IM I jai < o' ��\\\ \\ \\ O \\ Otn \ \ \ Ps O �`fi - _ _ _ l ------ / 1� \ \ �� \ \O,O \ �� \ \ p \ i� \ _ ( \,�// /� I I +I `� 9`? / 1 1 I CI \ I\ \ \ \ \y� ' \ \ \<a�s \ Sz� \ \ �� \'y <� �� \ —�� l - \> CD // i 90� I III m \ I 0 \ �o< \\ \ `\ o \\ c ?� 430� - - _ _w _ MANAGED SLOPES VO4 10 I / , \ \ V 1 \ 61 \Oteas \\ - L' O8 ' --- ♦'\ ' /O W W '' - I N 79) y \ o \ \ \ \ -OCP • O 'y \n c��/ ,O -- -� - O I w / \- \ \ \ \ O �ii3` I \ y \Oto ` Z 0 0' c,a \ mI3�4 rn \ \\ - — — ` - I rn P r 4 / Q l 0)') c,, r I \ \\_ \ ` WAVED I o \ Ics,<cn �^ 10 \ \ �o \<ya y \off' I o�°"'�du �_ ` '--- w VI) \� RIVE I \ c�' 1 aoa� \ \ Gam. „� s - -- - _ - - 6 I < I H GO' \OG`\�\\� / 1 , = .�' BENCHMARK= I T --- \10 '' O.it: CONNECT UNDERGROUND UTILITIES BACK m \ 1 I \O << /°�' '\ au �, o MAC HUB NAIL SET < ;-_ ;� \ Cb of o Z \ \ \ \ o 9� / /"�' ; \ \ _ w �- �'- IN ROOT OF 12" OAK \ % - _ AO ZIP \ \ ro� �• 1 c� \ \ 1 ?� o oM au�au c"� o --- / _w ELEVATION- 470.67 �XRA�N�A E ER�ANEN� \ I. I O \ 1 �- / \ \ G� 1 01 / O p / oW/ I �\ �s O 7� < - - - _ - - _ / I �i TO OVERHEAD UTILITIES AT THIS POLE. \ `II / ERSEM� \ \ �' 4 0 _P / \ \ \ �o / \ \ 1 < o' ` \ I or+/ I I \ `'' °"'� y w w <\ I I I / / DBT78b P 737A \ ` \ 1 I \ \ \ \ < 7- °xu—°xu—°xu—°xu—°ru—y, clu— �� _''t.�s /w �W I <F'' \ -- '7TP„_ °''_°"'T°"'_°"1—aar--- I k� G I o \ ' au� _ _ <^ E c� tip' o .5 voG o., w X x, I G Icn< Z\ -� <^------ 18" BENCHM K= \O �'�ft W _ w RWSA G� ' / 1 eau -__- _ WL �v MAG HUB AIL SET \ / / \ ' ' / CDNO,W I P P INLET \ \ \ / \ \ \ 1 I \ ' '� d' yam""" �w IN ROOT OF HACKBERRY TM 061A1-01-OB-00100 \ \ , / / i' ' / �L�l{ I - \ 0 7t \ \ \ / I •I o / /'a I I I �� $ o� ?�e> 0/4� ro ELEVAT N= 471.36 # �ARCELAT� �A/ /figP387.18 1 T - 8.34 v p� v vv / / v /' / , / / 3°p�,l I o� oq cr $a, �o� °"tea., 470 J'G SPAAR, ALBERT PETER III OR / I G o s \ eau ♦ - <� o LISA RUSS I _ c� / / /' /' /' b� �' F �, ��` I as O o � / /NVd�3�5�7L19 I I I � � NV=39 57j�C; � / \ � I / � �i ' / I , � < \ � 1 1 I / roa v \ I \ o �t-*�4 /2.950 AC./ / / / / - b / / �/ / c. _ � c^ ?� \ \ G - -- o D.B 3796 P. 746 / TMP 61 A-201 A TO BE ADDED TO PARENT I 10� ' I \ TM #61 - L I QB / I I i / / / i , t ' 7 $` oc^�,s� \ \ cr-'-- ■ \ 1 // ' / y / I IV - A -c / / 4,� i o PORTION OF $ate \ v I \ 1 kSLIAR KU/TTNER / ' 1 / I II - / / J / / g // ,'PARCEL TMP 61-210 PARCEL A-1 �� 1p�o� e F 2� \� °�� 7 — _ _ Z i i v Exisn a / / O I o // c� �NSTf.f�l�/�O9%2'L41/ / 1/ v D,RAI�--'- �o / ��0.0 / / / , ' o o T (� v '� o G � �' r / / Y / I nab 7 � � / / E / ,-� I c^ 1 0 / v I � I I V v � < � � � v / / / / / I / / 41 / / o cn I v ,c BIZ / .� / / // / / ► y / ° N / . / - PARCEL A-1 HSG �v--------_--- o� 47p � XIMATE LOCATION / E VILLAGE HOLDIN S, y0 'SI / /1 / c c�` y� NO\-� 4 p, g cA , : xp-o�x y q o \ OD ZONE AE PER oc� --- $2 12 / I o x .c DB 4582 PG 7 �-- AP / / / / r IRO AND eAP SET' �1-- �`�,, / I / / / v �_ o cT TM 061A1-01 I ' �o <� ECG �NR LPG ----__ ,/ / / �� y\ i 6.342 AC.�' Q� s'�� zr--- o a I _, �r G ' Y / / / / , 1 / o r*IE VATI N` 40 73 / / / / O /" n1 c^ pcp, < ace - - - - �t - /v • � � , / d F -og -o � a qT SPENCER, MARVIN a / / / / ,I / �� / 1�`3 23 p,t m / o� I r , / S� I o Y o G kE 4 /� 19 ,/ / / 0< vl o v �� / / : / 12'J� / / c^ / r (� ' --- ' 'P °O O o _--- oa` \ �y \ D.B 421 ----__ '� v s o o / '' '' 1 I / / / / FO N 0/ / B • - / o a / / �A"sD I I f ocr ' \ - - - y ► - - - - _ --- - Y `�6 cp. Milk,\� // o / / / / / J / _ T / �x, _,---�21 / / /' / �f .co �x I 'Q O < _" _ — -� .� % ' / /' I cr ' O C) fs '(� ?� o' 9 Z� / q 60 _ — j 9 3 - —'HSG -- --- — _ - I �� ,o � '4y — 60 /�A c^ , <b 1 II Y / I I 1 / / ' , <o <0 7 .c� _ 53.8 I - ��1 / r / o i r /S O - c' + 'r, _ \ I / 1 / ' OZ O , O> i'1/ /� X t l i' / / A ST/iT -- -�-- ' 70 `� 2-STORY FRAME rn -�� I II I j I I I 11 / / /�17• ��`�' �` -' - o / �, ?� tt�'^°s ' - - A O \ E E 6� ` -_- _ \ \ ,� tL N I ( �, / o / / �� a, ,AF` ---- 1 bo / 'y�'` s RIO RO CUT 1 \ \F^ a' \ ` c��" G DWELLING w I I - �I I I o ' / r �°--------- - a O x s/ /, AD EAST \ O N O. 465 III 1 I I I 1 c� \ ' �iP� � vt11 ' ' / o c' O BOG ' �?� A 6 F , x _ _ \ \ rn I � • I <�/ ,----------- / yo O F� <c ,'y�� ,'�/ .% _ \ \ \ \ BENCHMARK 26.3'\� 11� n / ' � � � MAC NAIL SET IN P roS �p �' / GAO _�--- --------�_-_ \ ELEVATION= 4 V �47D — _ 28'1 I I G47D�y� a, ( o y 9� - v III I \ \ I I I I ' roa � ' < O' � � N � � HSG A J i A i — �c� w w O P O �� \ \\ , \ / �,� / / tics, / �o �j tig �_ / PRESERVED SLOPES r I I H S G A f,, ` �' ' \ I I I 9 i9 c9 v' W O O O \ \ 1 1 ,� , m (nD N , / G� �p (� 0� /\' \ \ O(�f W \ Og�cb`"�b N P cD 1 N rn �0 \ \ \ `\ O \ \ ��3 LI�IIiIIII��� r I \ \ i / OCR s O i ' ' /' / - O \ 1, / I \ \ oa \ y cs �tr's '"� , , cn I `/ tP O Z� / \ - / \ O5+ -i tI 7- 1 410 440 � O / / v II \V A I I A V 1 1 1�\ p `s /' v� \\ o b K \ .c \ \ \ tics, \ r ' ,\\`\ _ A r I �__- Z \ --= IS BROOKS, CARLTON R REV T/A - < y r �+\ \ / / / �- & BETTY W BROOKS J 5 A \ p D.B. WB124 P. 638 \ n L \ LL :\ \ \ RMAN��lT SIGH MENT \ X, D: B. 1075 R; 506 / \ p CITY T.M. 47A-150 -420 \ 0lp \ \ -\-- - -� -__ _ _-_-_- ____- _______-- - - - ___-----_ - _ _ �- w bo \ �� </NF W ---� -- — ------------ / I _Ni j -= -- __ _- ----- _ - - -- _ DEMO ALL EX. STRUCTURES Date PAVED DITCH / / / m EXCEPT THIS BUILDING. 41Y� �� 5 re vNF oti // ' STATE /ROUTE 631 0 / ' / 09 23 2019 ���+ oe. b�� � / / RIO )ROAD EAST \ / Scale 1" = 30' �' �' \ o < O� GO �------------- Q--------------� \ Sheet No. \ 40 0 40 80 120 PRESERVED SLOPES - C2 OF 15 \ \ SURVEYED < 25% Qc Scale: 1 "=40' File No. ��_ CITY T.M. 47A-150 16.009 T SHED --- -- -- _ I —I m C / 0 o T i�1 t YSED I I I I I I I J I 0 i / a � / P / , , / o , 0 \ , /0 r4 / �oo \ 0 0 � , O RESIDENTIAL UNITS 27 TOWNHOMES (TH) 11 SINGLE FAMILY HOMES (SF) I/ ° 36 TOTAL UNITS NEW SEGMENTAL ° BLOCK WALL. 5' MAX HEIGH / / \ EACH, AVG. 4'. ® `•\ o �2 \ �� / / ` 42" HANDRAIL ON TOP WALL. ` `� R20' S _ M. SHIM No. 44183 o_e BMP A: (23) 75 SF - AV �p<LSF _ - LEVEL 1 RAIN GARDENS IN PERIMETER LOTS TREATED AREA: 0.84 AC \ HIGH SI LITY PE XING ST PES Ty gF A y 5��� c�� �H BMP D: ADS BAYFILTER W. � I et> pFILTRA — � ' ' '6 �o � � STORMTECH CHAMBERS \O ` .` ` A AREA: C — y 0 TREATED AREA: 0.78 AC ti °? Be: TORAGE (6) UNTREATED AREA + 2.61 AC AREA FROM BMPS A, I � mow `oo �0 5B �, -- MAIL _ 0 �° \ \ ^ > ^� �� 6B EW S GM NTAL / _ p� `' C 7B O BLO LLS. i -- — ��000 o� EIGH I ` / 3 STORY TH / O -ACH, AV 4'. I I i 968 SF 9A i `/ / -�_ \�o�o Ap' o �� o 42" H N RAIL O / ^o^o°' _ ` I '( - I � � 3 STORY TH 3 STORY TH ° —�— _ / \ <<E 704 SF 10A 768 SF 17A STORY SF 106 Y E 2p PRl �q 3 SF Y I A �i 10 I — 1232 3 STORY TH it 3 STORY TH 704 SF 11 A 768 SF O�� I / 0 / / BIKE STORAGE (6)' !L I, � w 3 STORY TH / i` / STAGE I �S• W O / i 704 12A j� / 3 STORY TH ° 1 0.0' 3 STORY SF Q I 8 -- ---- I / TH 1056 SF \ 3 STORY r 704 SF 13 19A _O � /i 4 . � i � l COMMON \ �I _ __— I _ i i i ✓ i HOUSE 2 I 13 STORY TH 126 ���IIII p �. / OPEN SPACE o 1 I 768 sF — -- o Z I / STq 2 i " i i 18 850 SF 1900 SF Y _ ;,yWW,W / 232 sF th P� ti % sF �—�- ------------------- R15' i l .% %W W . i / j 1 I 5' SETBA F 1'\�` 2 _---'------------------ �� i 3 STORY TH 3g 136 ACCESS ESMT ' 768 SF 0 �' ` W i 3 STORY TH o 968 SF BMP Cl- 750 SF LEVEL ��� _ A T 2 BIOFILTRATION BASIN. S T ° � / �s8 RY TH yy ,,- \ �\ 10' I. 3 STORYTH % i% TREATED AREA: 0.76 AC Rio D O / 768 SF1 A 3 STORY TH C \ 1 704 SF 15A \\J/ 10' 3 STORY TH (/) p y I 768 SF 2 \ �� \� �\� OI 3VE TORSFTH 10' N04 FILITERGRASS STRIP p r \\ \` ` ` \ `\\\\ 10.0' COMMON HOUSE 1 / Q / / TD � ` / BIKE STORAGE (6) 1,815 SF cF TF �z�J �` m cn 3 STORY SF G Q RAIL TURN n m 1056 SF OUND o� z 5'.°SIQ LL°WAL1<LL (TYP.W I / p j TE rn I / G SPACES ROAD A 32' PRIVATE \ s_ -u-- \ y/TKO\ \ •��` �` \`--- -- - - - _ -- --- -- _ - /��— � � ; ' 0 ' i 3\MAX RE WALL �v, '��\ --� ,--� PRESERVED SLOPES BMP B: (15 0 SF Y LEVEL 1 RAIN GARDENS -' IN INTERIOR LOTS `�0/ 4 TREATED AREA: 0.76 AC ------- J,J� - - ----- ------------------------- - G'G � WyITF � 4/NE STATE ROUTE 631 RIO ROAD EAST �\/4 r PRESERVED SLOPES r SURVEYED < 25% • • 30 •• •• ■ ■ ■ ■ ■ Scale:• n Ar O / (0//� U OU /// / /i A�oil 6 mow, 0 N W �^ Z Z W w d 0 o /// �y / I ` �z w SHED �/ / / / } 0) m V ;I / /� y i I 44 50 / V I W w N NEW SEGMENTAL C� � U 00 BLOCK WALL. 50 / 290 �� �� 5' MAX HEIGH \ X i / / i _ / p40�a / 9- �� A . EACH, AVG. 4'. �400/ / ; / o.' /� / / ` 42" HANDRAIL o / /� � / \ "N ON TOP WALL. / 7 l ------ — v I o_ _----- I I 07'-0 1 0 o �w M. SHIMP 20 / W — � w No. 41183 y \ Ci \ V \o \ 1 �W w = _Ar CENAI. ■r CPA \ / _ W W i 456' T w —>�� V A \ 50 I 5 \ i� �iii p \ \ OFF O�W \_Z� 50 \ w 400 - PRESERVED SLOPES \ r \ \ 16 \ �" \\ `/ \ 1�,° 1 \� �/y I I \ o�� \ / \ o ` — _ _ _ �\ TO BE DISTURBED i T \ I \ � I I \ v oo� 1 -- — W �W� �� vv I /O I V o� \ co �� --- / �W 0 \ \ 10 Wes/ ��� — o EW S GM NTAL / 5 \ \ ; // / / ry6 /' a - / w w �` I v,`O' — 470 — \ K 5' o ACH, AV 4'. RAIL I O �� \ 1� FE 429.8- 16 / / // BFE 420.8// W W W w P1- T-0 ALL. � � _ I / � T s 930.5 i FFE 438.0 0 — -- \ " FFE / -_' BFE 429.0 o I � . `. w � w o_ w � � � _ I � I \ � � — _ - v � 4 W F � 7 -��421.5 470. — — — — .... CD ... ... . S ED / _ ___\ 2 % BFFE FE 431-. // /�W FFERpi: 439.8 / / / / 1 / 7 / // \' w�'" D ,w �� w�_— -------`6� —_—___ � C�V i , / °w s 4�� CD --� / / / 30 / FFE 431.9 / — — — \ _ 65 / / / / �o� / / / / BFE 422.9 / —o / �� X��� / I I \FFE 465.0--- / FFF� 431.8 460 i - iFF�32.6 1-1 — I ✓ i / I I �� — ��_ — — — — — — _ o ��— �— —__—_----------- FF11 458.4 I I R i f �E- --------------------- i BF 449.4 I 60 — — — _ z { RI as ,�.��o �i . I I �� �FE�s� / ,� — a1 ___— — —_<— _ _ _----- _--__ --- w 442.0 433.0 / ! �ISOS TA T FFE BFE �iW wca N Y \ BFE 425.0 A / /' �i �i - I FFF ISM o� \ RIO 2A I �s FFE 443.0 w BFE 4340� ,. � �� % / /� .w FFF S i C -1, D 1 \ 1 �� / FFE 05.5-10 = / / lot (/) p \ `� I BFE 4 6.5 s w / / h %`•� . / / i _ FFE 445.0 O ➢ \\ �� \ 1� �� I -- II 1/ / BFE 436.0— r � A `V A �� � I FFE 437.0 BFE 428.01 FFE 451.0 BFE 442.0 41p ` \\ \ \ I Fh�E 445�8 w I I BFE 43618 / V 53 67, o ___ W PRESERVED SLOPES IIII `—` 3p----------------------------------------- -4/ l b/NF— _ — — — — _ — _ ,- / l J — — — — — — .o �— _— _—__ — __ _ �__—_— -----_ ------ _ uj � �'hITE SINE oti� // STATE /ROUTE 631 0 2G �� — � y� w PRESERVED SLOPES SURVEYED < 25% • • 30 •• •• Scale:• SAN. STORM ENT IENT 730 CONC. 6WALL TOP=387 80 INV=385.29 1 POW[ POLE ,qk t A5Z \ o G Z \ G Z D / V \ D m�D BEGIN BRANCH 1: PEA GRAVEL FLOW LEVEL 2 RAIN GARDENS: INCLUDE SPREADER PERP. 10' GRASS FILTER PATH WOODEN RETAINING TO FLOW WALL AS NEEDED LENGTH-24" 24" LENGTH OF #3 NTDTH-6" IMPERMEABLE LINER STONE OR RIVER DEPTH=6" NOTE: BIORETENTION PLANTING STONE OUTLET NOT SHOWN THIS DETAIL PROTECTION. 2" MULCH LAYER 6" TEMP. RUNS, PONDING ELEVATION — — — 16" BIOFILTER MEDIA MIX 12" STONE STORAGE IL R I X LAYER. USE #57 STONE BOX 90% SAND 10% 209 SOIL FINES PERMEABLE FILTER FABRIC 3%-5% ORGANIC MATTER BELOW GRAVEL. USE MIRAFI 14ON OR EOUIVALENT. o 0 0 0 0 0 6' KEY -IN �RF 8 " PERF PVC UNDERDRAIN. SIDEWALK IMPERMEABLE FILTER 1. DRAIN FABRIC ON SIDES OF CONNECT TO WI1 E TH INSRTA-TEE RAIN GARDENS. ` 6" KEY -IN AT 6"-12" HDPE COLLECTOR DRAIN. BOTTOM OF STONE 18 x8 TS&V TO EX. RWSA WATERLINE o A5C o \ \°D 1 ROOF DOWNSPOUT DETAIL 2 TYP. RAN GARDEN DETAIL _ \ D� D ` C5 NOT TO SCALE C5 NOT TO SCALE NOTE: D / / G, ° ° LOTS 1 A-8A SHALL HAVE RAIN GARDENS WITH A 67 SF FOOTPRINT. D° LOTS 9A-17A SHALL HAVE RAIN 0 a° GARDENS WITH A 101 SF FOOTPRINT. 041 D SEE SHEET C6 FOR REMAINING LOTS' < DETAILS.. V p . SHIM RWSA WATER EASEMENT Nod SRW—ARV-16 44183 V BE D �cF ° ' 90 \ ° \ W �� 30 UGE EASEMENT tt* ° ff �°� �' W _ •�� ` APONAL AV °� D FHA � � 3A � D �'cF W � � �41�.41F Ar �i W _ \ e o R UGE U W W_ W \ 5 UGE SEE SHEET C14 UGE— � _ �' - _ uc� DW � E W 4 ° / ff ° ° D �c UGE dGE D _ W BE D HDP ° °\ D UGE _ ° W(n wL 5 A ° ° GEC— UGE °D W _ W O / r UGE D W D y i F� O� cE UGE UGE USE UGE D cS.. 5 °IV UGE BMP D: ADS BAYFILTER W. \ BEND W W y y STORMTECH CHAMBERS — ° — AC TREATED AREA: 0.78 AC © W ' . Q ` . _ /� °� 1 B A6 \ UNTREATED AREA + 2.61 / AC AREA FROM BMPS A, -- B, D sD X2 18' HDPE TORM I _ 7 I / / � B� 15" HDPE STORM DROP INLET TOP=398.3 I INV=390. I I I � I � I EXISTING PERMA N s DRAINAGE EASE I 1788 P. 730 I � I / I m I iu l If / \I �s / If y D Q I \ / s s w W 13A I C2 I \ 0 I \ I � I \ I \ I \ I \ I\ \ 1 \ \ \ 1 \ 00 I I s ,S i 14A / / I I I I s s o_ I � � I B / DF ' � s / /s s 16 A �— FH Sr �,, \Y-�y BASIN L_ — B4 \ SDR_ BEND s -- -- 90' s I is yDp BEND '^ E STORM o ° GV -6— OPEN SPACE 18,850 SF W V 48" RISER y w _ /y BMP Cl: A0 SF LEVEL 2 B10FILTRATION BASIN.w TREATED fIREA: 0.76 AC — I w . W W 8"x�6„ �I ED.90° 13 - END BRANCH 2: GV BEND G2ly ff 20 0 20 40 6 Scale: 1 "=20' --------------- D ff ° ° O�y RWSA WATER EASEMENT SRW—ARV-16 �w -W - W �W mo77w_ _ W _ U Ups — vcE — _ W _ W— _ UGE y UGF _ W \ H1 --w ---- w--- w� SpR P AGE�� UGE> y UGE — µ y BMP Cl: A0 SF LEVEL W W i i 2 BIOFILTR�TION BASIN. TREATED AREA: 0.76 AC W`=1lVW.=yyWW.NN. .W. BMP A: (23) 75 SF LEVEL 1 RAIN GARDENS IN PERIMETER LOTS TREATED AREA: 0.84 AC III 6OUTLE TDI OUT 24" #3 STONE OR RIVER STONE OUTLET PROTECTION 6" PEA GRAVEL FLOW SPREADER 24" TO RAIN GARDEN ROOF DOWNSPOUT DETAIL NOT TO SCALE 30' UGE EASEMENT BEGIN BRANCH 2: 18" x8" TS&V TO EX. \ ty RWSA WATERLINE �W �W \�cE� W� 1,� ,pn u W �W 7-7 W W �� A w -0 LENGTH-24" " LENGTH OF #3 "DTH-8" STONE OR RIVER l DEPTH=6" STONE OUTLET PROTECTION. V LEVEL 2 RAIN GARDENS: INCLUDE 10' GRASS FILTER PATH WOODEN RETAINING WALL AS NEEDED IMPERMEABLE LINER NOTE: BIORETENTION PLANING NOT SHOWN THIS DETAIL Y MULCH LAYER 6" TEMP. PONDING ELEVATION - - - 16" 810FILTER MEDIA MIX 12" STONE STORAGE 1 IL R I X7/ LAYER. USE $57 STONE " 80X-S09. SAND ' / FINES %-5% ORGANIC MATTER PERMEABLE FILTER FABRIC BELOW GRAVEL. USE MIRAFI 14ON OR EQUIVALENT. 6' KEY -IN IMPERMEABLE FILTER FABRIC ON SIDES OF RAIN GARDENS. 6" KEY -IN AT BOTTOM OF STONE " PVC NOD ERDRA CONNECT HOPE DRAIN WITH INSERTA-TEE 8"-12" HOPE COLLECTOR DRAIN. 4RF TYP. RAN GARDEN DETAIL NOT TO SCALE NOTE: LOTS 1 B-15B SHALL HAVE RAIN GARDENS WITH A 67 SF FOOTPRINT. SIDEWALK I` '��CENAI. Vk-�A HAVLU UI Il, • • 20 40 •• ■ ■ ■ ■ ■ Scale:• PROJECT DESCRIPTION, GENERAL NOTES, EROSION & SEDIMENT CONTROL NOTES, AND SEQUENCE OF CONSTRUCTION PROJECT DESCRIPTION THIS SITE IS A DEVELOPED BUT MOSTLY WOODED LOT OFF RIO RD EAST IN ALBEMARLE COUNTY BEING DEVELOPED INTO A MULTI -UNIT COMMUNITY. THE TOTAL AREA OF DISTURBANCE IS 5.90 ACRES. THE PROJECT INVOLVES THE FOLLOWING WORK ACTIVITIES: 1. THE CONTRACTOR SHALL OBTAIN ALL LOCAL AND STATE EROSION AND SEDIMENT PERMITTING REQUIREMENTS AND MAINTAIN ALL EROSION AND SEDIMENT CONTROLS IN ACCORDANCE WITH THE PERMIT REQUIREMENTS. 2. INSTALLATION OF PERMANENT EROSION AND SEDIMENT CONTROL MEASURES AS SHOWN ON THE PLAN AND DETAILS. 3. GRADING AND PLACEMENT OF FILL SHALL BE IN GENERAL ACCORDANCE WITH THE PLAN. 4. ESTABLISHMENT OF PERMANENT STABILIZATION OF ALL DISTURBED AREAS. ADJACENT PROPERTIES THIS PROPERTY IS BORDERED ON THE EAST AND SOUTH BY RIO ROAD EAST. THE PROPERTY IS BORDERED ON THE WEST AND NORTH BY DEVELOPED, PARTIALLY WOODED LOTS. OFFSITE AREAS: SOIL MAY NEED TO BE EXPORTED OFFSITE. IF OFFSITE WASTE AREAS ARE USED, THESE SHALL HAVE EROSION CONTROL PERMITS. SOILS THE SITE CONTAINS THE FOLLOWING SOIL TYPES: 21B - CULPEPPER SANDY LOAM - 2 TO 7% SLOPES, HSG B 47D - LOUISBURG SANDY LOAM - 15 TO 25% SLOPES, HSG A CRITICAL AREAS THE CRITICAL AREA ON THE SITE IS RIO ROAD EAST. THE CONTRACTOR SHALL ENSURE NO SILT ENTERS THE ROADWAY. EROSION & SEDIMENT CONTROLS 1. SAFETY FENCE: A PROTECTIVE BARRIER INSTALLED TO PROHIBIT UNDESIRABLE USE OF AN EROSION CONTROL MEASURE. STD. AND SPEC. 3.01. 2. CONSTRUCTION ENTRANCE: INSTALL AND MAINTAIN A CONSTRUCTION ENTRANCE, AS NECESSARY, THAT MEETS THE REQUIREMENTS OF STD. AND SPEC. 3.02 AND CONFORMS WITH THE REQUIREMENTS OF THE EROSION & SEDIMENT CONTROL PLAN. 3. SILT FENCE: INSTALL AND MAINTAIN SILT FENCE THAT MEETS THE REQUIREMENTS OF STD. AND SPEC. 3.05. THIS SILT FENCE SHALL BE INSTALLED AS SHOWN ON THE EROSION & SEDIMENT CONTROL PLAN AND ACCOMPANYING DETAILS FOR THE PURPOSE OF INTERCEPTING SILT -LADEN RUNOFF BEFORE IT IS DISCHARGED FROM THE SITE. THE SILT FENCE SHALL BE INSPECTED AND MAINTAINED TO ENSURE CONTINUED PERFORMANCE. 4. TEMPORARY SEDIMENT TRAP: A SMALL PONDING AREA, FORMED BY CONSTRUCTING AN EARTHEN EMBANKMENT WITH A STONE OUTLET ACROSS A DRAINAGE SWALE, TO DETAIN SEDIMENT -LADEN RUNOFF FROM SMALL DISTURBED AREAS FOR ENOUGH TIME TO ALLOW MOST OF THE SUSPENDED SOLIDS TO SETTLE OUT. MAXIMUM EFFECTIVE LIFE IS 18 MONTHS. STD. AND SPEC. 3.13. TO BE CONVERTED INTO A PERMANENT DETENTION POND AT THE END OF CONSTRUCTION AS DETAILED. 5. TEMPORARY DIVERSION DIKE: A RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPING DISTURBED AREA WHICH DIVERTS SEDIMENT -LADEN RUNOFF TO A SEDIMENT TRAPPING STRUCTURE. MAXIMUM EFFECTIVE LIFE IS 18 MONTHS. STD. AND SPEC. 3.09. THE CLEANWATER DIVERSIONS WILL BE MADE STABLE BY THE USE OF VDOT LD-268 DESIGN STANDARDS. 6. TEMPORARY SEEDING: TEMPORARY SEEDING SHALL BE APPLIED TO ALL DENUDED AREAS WITHIN SEVEN (7) DAYS TO DENUDED AREAS THAT MAY OR MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS. TEMPORARY SEEDING SHALL BE APPLIED IN CONFORMANCE WITH STD. AND SPEC. 3.31. 7. PERMANENT SEEDING: PERMANENT SEEDING SHALL BE APPLIED TO AREAS DELINEATED ON THESE PLANS WITHIN SEVEN (7) DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. PERMANENT SEEDING STABILIZES DISTURBED AREAS AND ENHANCES THE BEAUTY OF THE SITE. 8. MULCHING: APPLICATION OF PLANT RESIDUES OR OTHER SUITABLE MATERIALS TO THE SOIL SURFACE TO PREVENT EROSION AND FOSTER THE GROWTH OF VEGETATION. ORGANIC MULCHES (STRAW) HAVE BEEN FOUND TO BE THE MOST EFFECTIVE. 9. DUST CONTROL: CONDUCT DUST CONTROL OPERATIONS NECESSARY TO MET THE REQUIREMENTS OF STD. & SPEC. 3.39 AS REQUIRED TO CONTROL SURFACE AND AIRBORNE MOVEMENT OF DUST. 10.INLET PROTECTION: INLET PROTECTION MEASURES AROUNF THE NEW INLETS SHALL BE PROVIDED IN ACCORDANCE WITH STD. AND SPEC. 3.07. SILT FENCE, STRAW BALES OR TEMPORARY STONE APPLICATIONS SHALL BE APPLIED AS APPROPRIATE FOR CURRENT GRADE CONDITIONS. 11.OUTLET PROTECTION: RIP -RAP SHALL BE PROVIDED AT THE OUTFALL OF CONVEYANCE CHANNELS, CULVERTS, AND STORM SEWERS IN CONFORMANCE WITH STD. AND SPEC. 3.18. OUTLET PROTECTION SHALL BE INSTALLED WITH ACCOMPANYING STORM SEWERS AND SHALL BE INSPECTED AFTER EACH RAINFALL EVENT AND REPAIRED IF NECESSARY. ANT SEDIMENT BUILD UP SHALL BE REMOVED. PERMANENT STABILIZATION AND SEQUENCE OF CONSTRUCTION THE FOLLOWING ARE THE PROPOSED MANAGEMENT STRATEGIES AND DETAILED SEQUENCE OF CONSTRUCTION: STAGE 1 1. INSTALL CONSTRUCTION ENTRANCES OFF RIO ROAD AS SHOWN ON C8. INSTALL SILT FENCE SHOWN. 2. INSTALL STORM SEWER "SECTION A". REFER TO C14 FOR OFFSITE STORM. 3. WHEN OFFSITE STORM HAS BEEN INSTALLED, INSPECTED, AND STABILIZED, REMOVE CONSTRUCTION ENTRANCE ON PARCEL A1A. 3. INSTALL DIVERSIONS, SILT FENCE, INLET PROTECTION, & SEDIMENT BASIN. 4. CONTACT DESIGN ENGINEER AND THEN COUNTY INSPECTOR FOR INSPECTIONS 5. WHEN ALL PARTIES HAVE APPROVED FIELD CONDITIONS, BEGIN MASS GRADING, STARTING AS SHOWN ON SHEET C8. 6. MAINTAIN PERIMETER CONTROLS DURING TRANSITION INTO STAGE 2. STAGE 2 1. MOVE CONSTRUCTION ENTRANCE TO NEW LOCATION SHOWN ON SHEET C9 AFTER STAGE 1 AREA IS GRADED. 2. INSTALL ADDITIONAL PERIMETER CONTROLS AS SHOWN AS GRADING PROCEEDS. CONTACT DESIGN ENGINEER TO INSPECT AND CONFIRM PROPER INSTALLATION. 3. INSTALL UTILITIES AND GRADE ROAD AREAS. 4. MASS GRADING SHOWN ON THIS SHEET REPRESENTS INTERMEDIATE GRADES AND CAN BE ADJUSTED IN THE FIELD. 5. MAINTAIN SEDIMENT BASIN UNTIL ALL UPSTREAM AREAS ARE STABILIZED. CONTACT BOTH DESIGN ENGINEER AND COUNTY INSPECTOR BEFORE BASIN IS REMOVED. STAGE 3 1. INSTALL SILT FENCE WHERE NEEDED FOR ANY FINAL PERIMETER GRADING (PRIMARILY FOR REMOVAL OF SEDIMENT BASIN AND DIVERSIONS ALONG THE PERIMETER) 2. AFTER SEDIMENT BASIN IS REMOVED, INSTALL STORMTECH BMP AND LOWER PARKING AREA. DO NOT INSTALL STORM CARTRIDGES UNTIL SITE HAS BEEN ENTIRELY STABILIZED AND SYSTEM HAS BEEN CLEANED OUT. 3. WHEN SITE HAS BEEN STABILIZED, HOUSE CONSTRUCTION MAY BEGIN. 4. DURING HOUSE CONSTRUCTION, AREAS THAT ARE NOT BEING DISTURBED MUST REMAIN STABILIZED. INSTALL SILT FENCE PROTECTION FOR LOTS UNDER CONSTRUCTION. 5. IMPORTANT: RAIN GARDENS SHALL BE INSTALLED LOT BY LOT. DO NOT INSTALL RAIN GARDENS UNTIL EACH RESPECTIVE HOUSE HAS BEEN CONSTRUCTED. THE RAIN GARDEN UNDERDRAINS SHALL BE CONNECTED TO THE STORM DRAINS WITH INSERTA-TEES AS THE FINAL STEP OF LOT CONSTRUCTION. CONTACT DESIGN ENGINEER FOR INSPECTIONS OF THE RAIN GARDENS. 6. DO NOT INSTALL BIOFILTERS UNTIL ALL UPSTREAM AREAS ARE PERMANENTLY STABILIZED. FINAL 1. MAINTAIN CONTROLS UNTIL SITE STABILIZATION AND COUNTY INSPECTOR HAS APPROVED CONTROL REMOVAL. 2. ANY SEDIMENT THAT ENTERS BMPS FROM CONSTRUCTION MUST BE CLEANED OUT BY CONTRACTOR. CONSTRUCTION MAINTENANCE THE FOLLOWING CONSTRUCTION MAINTENANCE PRACTICES SHALL BE FOLLOWED AT THE SITE. 1. ALL E&S CONTROL MEASURES WILL BE CHECKED DAILY AND AFTER EACH SIGNIFICANT RAIN EVENT. ALL DEFICIENCIES IDENTIFIED DURING THESE INSPECTIONS SHALL BE CORRECTED AS SOON AS PRACTICABLE. 2. THE SILT FENCE BARRIER SHALL BE REGULARLY CHECKED FOR UNDERMINING, DETERIORATION OR SIGNIFICANT EROSION. SEDIMENT SHALL BE REMOVED AFTER EACH STORM EVENT AND WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHES HALF THE HEIGHT OF THE CONTROL. 3. THE CONTRACTOR IS RESPONSIBLE FOR ADHERING TO ALL MAINTENANCE REQUIREMENTS SET FORTH IN THE CURRENT EDITION OF THE VIRGINIA SEDIMENT AND EROSION CONTROL MANUAL, OTHER APPLICABLE COMMONWEALTH OF VIRGINIA REGULATIONS AND THE PROJECT SPECIFICATIONS. 4. ALL SEEDED AREAS WILL BE REGULARLY CHECKED TO ENSURE THAT A GOOD STAND OF GRASS IS MAINTAINED. 5. AREAS WITH RIP -RAP SHOULD BE REGULARLY INSPECTED TO DETERMINE IF HIGH FLOWS HAVE DAMAGED THESE CONTROLS OR CAUSED EXCESSIVE SEDIMENT DEPOSITION. ALL AREAS SHALL BE MAINTAINED IN ACCORDANCE WITH THE REQUIREMENTS OF THIS E&S CONTROL PLAN. ENVIRONMENTAL CONTROLS 1. CONTRACTOR SHALL PROVIDE AND MAINTAIN ALL ENVIRONMENTAL CONTROL MEASURES SO AS TO COMPLY WITH LOCAL ORDINANCES, STATE AND FEDERAL LAWS AND REGULATIONS APPLICABLE TO WATER POLLUTION IN WATERS OF THE STATE AND IN INTERSTATE WATERS. 2. CONTRACTOR SHALL MINIMIZE THE POTENTIAL FOR AIR POLLUTION BY THE USE OF EMISSION CONTROL EQUIPMENT ON CONTRACTOR OPERATED EQUIPMENT, SHUT -DOWN OF MOTORIZED EQUIPMENT WHEN NOT IN USE, AND ACTIVELY CONTROLLING DUST EMISSIONS THROUGHOUT THE PROJECT. EROSION & SEDIMENT CONTROL PERMITTING CONTRACTOR SHALL BE RESPONSIBLE FOR OBTAINING ALL LOCAL AND STATE EROSION AND SEDIMENT CONTROL PERMITS AND MAINTAINING ALL EROSION AND SEDIMENT CONTROLS IN ACCORDANCE WITH THE PERMIT REQUIREMENTS. GENERAL NOTES 1. THE INFORMATION AND DATA SHOWN OR INDICATED WITH RESPECT TO THE EXISTING UNDERGROUND UTILITIES AT OR CONTIGUOUS TO THE SITE ARE BASED ON INFORMATION AND DATA FURNISHED TO THE OWNER AND ENGINEER BY THE OWNERS OF SUCH UNDERGROUND FACILITIES OR OTHERS. THE OWNER OR ENGINEER SHALL NOT BE RESPONSIBLE FOR THE ACCURACY OR COMPLETENESS OF SUCH INFORMATION OR DATA. THE CONTRACTOR SHALL HAVE FULL RESPONSIBILITY FOR CONFIRMING THE ACCURACY OF THE DATA, FOR LOCATING ALL UNDERGROUND UTILITIES, FOR COORDINATION OF THE WORK WITH OWNERS OF SUCH UNDERGROUND UTILITIES DURING CONSTRUCTION, FOR THE SAFETY AND PROTECTION THEREOF AND REPAIRING ANY DAMAGE THERETO RESULTING FROM THE WORK. ALL OF THESE CONDITIONS SHALL BE MET AT NO ADDITIONAL COST TO THE OWNER. THE CONTRACTOR SHALL CONTACT "MISS UTILITIES" OF VIRGINIA AT 1-800-552-7001 PRIOR TO THE START OF WORK. 2. WHEN WORKING ADJACENT TO EXISTING STRUCTURES, POLES, UTILITIES, ETC., THE CONTRACTOR SHALL USE WHATEVER METHODS THAT ARE NECESSARY TO PROTECT STRUCTURES FROM DAMAGE. ANY DAMAGE CAUSED BY THE CONTRACTOR OR ITS SUBCONTRACTORS SHALL BE THE CONTRACTOR'S SOLE RESPONSIBILITY TO REPAIR OR REPLACE. THIS EXPENSE IS THE CONTRACTOR'S RESPONSIBILITY. 3. REPLACEMENT OR REPAIR OF DAMAGED STRUCTURES SHALL BE AT THE CONTRACTOR'S EXPENSE. 4. THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROTECTING ALL EXISTING SITE STRUCTURES FROM DAMAGE AND COORDINATING WORK SO THAT THE OWNER CAN MAKE NECESSARY ARRANGEMENTS TO MODIFY/PROTECT EXISTING STRUCTURES FROM DAMAGES. 5. THE CONTRACTOR SHALL BE RESPONSIBLE FOR NOTIFYING ALL UTILITY OWNERS, ADJACENT LAND OWNERS WHOSE PROPERTY MAY BE IMPACTED AND THE VIRGINIA DEPARTMENT OF TRANSPORTATION PRIOR TO COMPLETING ANY OFF -SITE WORK. 6. CONTRACTOR SHALL NOTIFY AND COORDINATE ALL WORK INVOLVING EXISTING UTILITIES WITH UTILITY OWNERS, AT LEAST 72 HOURS PRIOR TO THE START OF CONSTRUCTION. 7. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR THE CONSTRUCTION INDUSTRY (29 CFR PART 1926). 8. THE CONTRACTOR SHALL VERIFY THE LOCATIONS OF ALL BOUNDARIES, BUILDINGS, VEGETATION, AND OTHER PERTINENT SITE ELEMENTS. CONTRACTOR SHALL IMMEDIATELY REPORT ANY DISCREPANCIES BETWEEN EXISTING CONDITIONS AND CONTRACT DOCUMENTS TO THE OWNER AND ENGINEER. 9. CONTRACTOR SHALL SUBMIT FOR THE APPROVAL OF THE OWNER SUBMITTALS OF ALL SPECIFIED MATERIALS LISTED IN THE PLANS, TO INCLUDE SHOP DRAWINGS, MANUFACTURER'S SPECIFICATIONS AND LABORATORY REPORTS. THE OWNER'S APPROVAL OF SUBMITTALS WILL BE GENERAL AND WILL NOT RELIEVE THE CONTRACTOR FROM THE RESPONSIBILITY OF ADHERENCE TO THE CONTRACT AND FOR ANY ERROR THAT MAY EXIST. 10. CONTRACTOR SHALL BE RESPONSIBLE FOR OBTAINING ALL NECESSARY PERMITS, INSPECTIONS, BONDS, AND OTHER RELATED ITEMS IN ACCORDANCE WITH LOCAL AND STATE POLICY. STORMWATER MANAGEMENT NOTES: 1. ALL CONCETNRATED ONSITE RUNOFF SHALL BE ROUTED INTO MEADOW CREEK. SINCE THE SITE IS LESS THAN 1 % OF THE TOTAL DRAINAGE AREA TO THE POINT OF DISCHARGE IN MEADOW CREEK, NO CHANNEL ANALYSIS FOR EROSION OR FLOOD PROTECTION IS REQUIRED. 2. ONSITE RUNOFF SHALL BE CONVEYED USING STORM DRAINS. 3. WATER QUALITY WILL BE ADDRESSED BY THE USE OF BIOFILTRATION BASINS, RAIN GARDENS, AND A MANUFACTURED TREATMENT DEVICE. THESE WILL MEET THE VRRM REDEVELOPMENT NUTRIENT REMOVAL REQUIREMENTS PER 9VAC25-870-65. 4. BMP COORDINATES: • BMP A: RAIN GARDENS, VARIES. • BMP B: RAIN GARDENS, VARIES. • BMP Cl: 38.049256,-78.464854 • BMP C2: 38.048940,-78.465583 • BMP D: 38.048640,-78.465458 5. BMP A & B DETAILS: BMP'S A & B ARE LEVEL 1 VRRM-COMPLIANT RAIN GARDENS. EACH HOUSE HAS A RAIN GARDEN, THE RAIN GARDENS ON THE PERIMETER LOTS ARE CONSIDERED BMP A. THE RAIN GARDENS ON THE INTERIOR LOTS ARE CONSIDERED BMP B. BMP A WILL TREAT A TOTAL OF 0.84 ACRES, WHICH INCLUDES 0.48 ACRES IMPERVIOUS. THE DESIGN TREATMENT VOLUME IS 1893 CF. BMP B WILL TREAT A TOTAL OF 0.76 ACRES, WHICH INCLUDES 0.37 ACRES IMPERVIOUS. THE DESIGN TREATMENT VOLUME IS 1508 CF. ALL RAIN GARDENS INCLUDE 18" OF FILTER MEDIA ABOVE 12" OF STONE. EACH HAS A 6" PERFORATED PVC UNDERDRAIN. 6. BMP C1 & C2 ARE LEVEL 2 VRRM-COMPLIANT BIOFILTRATION BASINS. BMP C1 TREATS A TOTAL OF 0.76 ACRES, WHICH INCLUDES 0.21 ACRES IMPERVIOUS. BMP C HAS A TREATMENT VOLUME OF 1105 CF. C2 TREATS A TOTAL OF 0.25 ACRES, WHICH INCLUDES 0.03 ACRES IMPERVIOUS. BMP C2 HAS A TREATMENT VOLUME OF 231 CF. BOTH BIOFILTRATION BASINS INCLUDE 24" FILTER MEDIA OVER 18" 57 STONE (Cl) AND 12" 57 STONE (C2) WHICH HAVE A 6" PERFORATED UNDERDRAIN. BOTH BMPS HAVE GRAVEL FLOW SPREADERS AND GRASS FILTER STRIPS AS PRETREATMENT OPTIONS. D. BMP D IS A MANUFACTURED TREATMENT DEVICE. THIS INCLUDES STORMTECH CHAMBERS WITH AN ISOLATOR ROW AND A BAYFILTER TREATMENT. THIS BMP PROVIDES 70% TP REMOVAL. TREATMENT VOLUME IS 6,924 CF. BAYFLITER BMP INSTALLATION NOTES THE FOLLOWING INSTALLATION PRACTICES SHALL BE FOLLOWED AT THE SITE. 1. FOLLOW ALL MANUFACTURER GUIDELINES SPECIFIED ON SHEET C15. 2. EXCAVATE THE BAYFILTER PRACTICE TO THE DESIGN DIMENSIONS FROM THE SIDE, USING A BACKHOE OR EXCAVATOR. THE FLOOR OF THE PIT SHOULD BE COMPLETELY LEVEL, EQUIPMENT SHALL BE KEPT OFF THE FLOOR AREA TO PREVENT SOIL COMPACTION. 3. CORRECTLY INSTALL FILTER FABRIC ON THE TRENCH SIDES. LARGE TREE ROOTS SHOULD BE TRIMMED FLUSH WITH THE SIDES OF INFILTRATION TRENCHES TO PREVENT PUNCTURING OR TEARING OF THE FILTER FABRIC DURING SUBSEQUENT INSTALLATION PROCEDURES. WHEN LAYING OUT THE GEOTEXTILE, THE WIDTH SHOULD INCLUDE SUFFICIENT MATERIAL TO COMPENSATE FOR PERIMETER IRREGULARITIES IN THE TRENCH AND FOR A 6-INCH MINIMUM OVERLAP AT THE TOP OF THE TRENCH. THE FILTER FABRIC ITSELF SHOULD BE TUCKED UNDER THE SAND LAYER ON THE BOTTOM OF THE TRENCH. STONES OR OTHER ANCHORING OBJECTS SHOULD BE PLACED ON THE FABRIC AT THE TRENCH SIDES, TO KEEP THE TRENCH OPEN DURING WINDY PERIODS. VOIDS MAY OCCUR BETWEEN THE FABRIC AND THE EXCAVATED SIDES OF A TRENCH. NATURAL SOILS SHOULD BE PLACED IN ALL VOIDS, TO ENSURE THE FABRIC CONFORMS SMOOTHLY TO THE SIDES OF EXCAVATION. BIOFILTER INSTALLATION NOTES 1. CONSTRUCTION OF THE BIORETENTION AREA MAY ONLY BEGIN AFTER THE ENTIRE CONTRIBUTING DRAINAGE AREA HAS BEEN STABILIZED WITH VEGETATION. IT MAY BE NECESSARY TO BLOCK CERTAIN CURB OR OTHER INLETS WHILE THE BIORETENTION AREA IS BEING CONSTRUCTED. THE PROPOSED SITE SHOULD BE CHECKED FOR EXISTING UTILITIES PRIOR TO ANY EXCAVATION. 2. THE DESIGNER AND THE INSTALLER SHOULD HAVE A PRECONSTRUCTION MEETING, CHECKING THE BOUNDARIES OF THE CONTRIBUTING DRAINAGE AREA AND THE ACTUAL INLET ELEVATIONS TO ENSURE THEY CONFORM TO ORIGINAL DESIGN. SINCE OTHER CONTRACTORS MAY BE RESPONSIBLE FOR CONSTRUCTING PORTIONS OF THE SITE, IT IS QUITE COMMON TO FIND SUBTLE DIFFERENCES IN SITE GRADING, DRAINAGE AND PAVING ELEVATIONS THAT CAN PRODUCE HYDRAULICALLY IMPORTANT DIFFERENCES FOR THE PROPOSED BIORETENTION AREA. THE DESIGNER SHOULD CLEARLY COMMUNICATE, IN WRITING, ANY PROJECT CHANGES DETERMINED DURING THE PRECONSTRUCTION MEETING TO THE INSTALLER AND THE PLAN REVIEW/INSPECTION AUTHORITY. 3. TEMPORARY E&S CONTROLS ARE NEEDED DURING CONSTRUCTION OF THE BIORETENTION AREA TO DIVERT STORMWATER AWAY FROM THE BIORETENTION AREA UNTIL IT IS COMPLETED. SPECIAL PROTECTION MEASURES SUCH AS EROSION CONTROL FABRICS MAY BE NEEDED TO PROTECT VULNERABLE SIDE SLOPES FROM EROSION DURING THE CONSTRUCTION PROCESS. 4. ANY PRE-TREATMENT CELLS SHOULD BE EXCAVATED FIRST AND THEN SEALED TO TRAP SEDIMENTS. 5. EXCAVATORS OR BACKHOES SHOULD WORK FROM THE SIDES TO EXCAVATE THE BIORETENTION AREA TO ITS APPROPRIATE DESIGN DEPTH AND DIMENSIONS. EXCAVATING EQUIPMENT SHOULD HAVE SCOOPS WITH ADEQUATE REACH SO THEY DO NOT HAVE TO SIT INSIDE THE FOOTPRINT OF THE BIORETENTION AREA. CONTRACTORS SHOULD USE A CELL CONSTRUCTION APPROACH IN LARGER BIORETENTION BASINS, WHEREBY THE BASIN IS SPLIT INTO 500 TO 1,000 SQ. FT. TEMPORARY CELLS WITH A 10-15 FOOT EARTH BRIDGE IN BETWEEN, SO THAT CELLS CAN BE EXCAVATED FROM THE SIDE. 6. IT MAY BE NECESSARY TO RIP THE BOTTOM SOILS TO A DEPTH OF 6 TO 12 INCHES TO PROMOTE GREATER INFILTRATION. 7. PLACE GEOTEXTILE FABRIC ON THE SIDES OF THE BIORETENTION AREA WITH A 6-INCH OVERLAP ON THE SIDES. IF A STONE STORAGE LAYER WILL BE USED, PLACE THE APPROPRIATE DEPTH OF #57 STONE ON THE BOTTOM, INSTALL THE PERFORATED UNDERDRAIN PIPE, PACK #57 STONE TO 3 INCHES ABOVE THE UNDERDRAIN PIPE, AND ADD APPROXIMATELY 3 INCHES OF CHOKER STONE/ PEA GRAVEL AS A FILTER BETWEEN THE UNDERDRAIN AND THE SOIL MEDIA LAYER. IF NO STONE STORAGE LAYER IS USED, START WITH 6 INCHES OF #57 STONE ON THE BOTTOM, AND PROCEED WITH THE LAYERING AS DESCRIBED ABOVE. 8. OBTAIN SOIL THE MEDIA FROM A QUALIFIED VENDOR, AND STORE IT ON AN ADJACENT IMPERVIOUS AREA OR PLASTIC SHEETING. AFTER VERIFYING THAT THE MEDIA MEETS THE SPECIFICATIONS, APPLY THE MEDIA IN 12-INCH LIFTS UNTIL THE DESIRED TOP ELEVATION OF THE BIORETENTION AREA IS ACHIEVED. WAIT A FEW DAYS TO CHECK FOR SETTLEMENT, AND ADD ADDITIONAL MEDIA, AS NEEDED, TO ACHIEVE THE DESIGN ELEVATION. 9. PREPARE PLANTING HOLES FOR ANY TREES AND SHRUBS, INSTALL THE VEGETATION, AND WATER ACCORDINGLY. INSTALL ANY TEMPORARY IRRIGATION. 10. PLACE THE SURFACE COVER IN BOTH CELLS (MULCH, RIVER STONE OR TURF), DEPENDING ON THE DESIGN. IF COIR OR JUTE MATTING WILL BE USED IN LIEU OF MULCH, THE MATTING WILL NEED TO BE INSTALLED PRIOR TO PLANTING (STEP 9), AND HOLES OR SLITS WILL HAVE TO BE CUT IN THE MATTING TO INSTALL THE PLANTS. 11. INSTALL THE PLANT MATERIALS AS SHOWN IN THE LANDSCAPING PLAN, AND WATER THEM DURING WEEKS OF NO RAIN FOR THE FIRST TWO MONTHS. FINAL BMP INSPECTION CHECKLIST ❑ PRE -CONSTRUCTION MEETING WITH THE CONTRACTOR DESIGNATED TO INSTALL THE INFILTRATION PRACTICE HAS BEEN CONDUCTED. ❑ SUBSURFACE INVESTIGATION AND SOILS REPORT SUPPORTS THE PLACEMENT OF AN INFILTRATION PRACTICE IN THE PROPOSED LOCATION. ❑ IMPERVIOUS COVER HAS BEEN CONSTRUCTED/INSTALLED AND AREA IS FREE OF CONSTRUCTION EQUIPMENT, VEHICLES, MATERIAL STORAGE), ETC. ❑ AREA OF INFILTRATION PRACTICE HAS NOT BEEN IMPACTED DURING CONSTRUCTION. ❑ ALL PERVIOUS AREAS OF THE CONTRIBUTING DRAINAGE AREAS HAVE BEEN ADEQUATELY STABILIZED WITH A THICK LAYER OF VEGETATION AND EROSION CONTROL MEASURES HAVE BEEN REMOVED. ❑ STORMWATER HAS BEEN DIVERTED AROUND THE AREA OF THE INFILTRATION PRACTICE AND PERIMETER EROSION CONTROL MEASURES TO PROTECT THE FACILITY DURING CONSTRUCTION HAVE BEEN INSTALLED. . ❑ EXCAVATION OF THE INFILTRATION PRACTICE HAS ACHIEVED PROPER GRADES AND THE REQUIRED GEOMETRY FOR THE SUBSURFACE INFILTRATION TRENCH OR THE SURFACE INFILTRATION BASIN WITHOUT COMPACTING THE BOTTOM OF THE EXCAVATION. ❑ CERTIFICATION OF EXCAVATION INSPECTION: INSPECTOR CERTIFIES THE SUCCESSFUL COMPLETION OF THE EXCAVATION STEPS LISTED ABOVE. ❑ FOR INFILTRATION TRENCHES, PLACEMENT OF FILTER FABRIC, AS REQUIRED, ON THE SIDE SLOPES. ❑ BOTTOM OF TRENCH HAS BEEN SCARIFIED. ❑ SIX-INCH FILTER LAYER OF SAND PLACED ON THE TRENCH BOTTOM ❑ OBSERVATION WELL INSTALLED. ❑ REMAINING STONE AGGREGATE PLACED (NOT DUMPED) IN 6-INCH LIFTS. ❑ TOP SURFACE OF INFILTRATION PRACTICE IN ACCORDANCE WITH APPROVED PLANS. ❑ ALL EROSION AND SEDIMENT CONTROL PRACTICES HAVE BEEN REMOVED. ❑ FOLLOW-UP INSPECTION AND AS -BUILT SURVEY/CERTIFICATION HAS BEEN SCHEDULED. ❑ GPS COORDINATES HAVE BEEN DOCUMENTED FOR ALL INFILTRATION PRACTICES ON THE PARCEL. LONG-TERM BMP MAINTENANCE CHECKLIST • ENTRY INTO UNDERGROUND PIPES REQUIRES CONFINED SPACE CERTIFICATION. • THE DRAWDOWN RATE SHOULD BE MEASURED AT THE OBSERVATION WELL FOR THREE DAYS FOLLOWING A STORM EVENT IN EXCESS OF 1/2 INCH IN DEPTH. IF STANDING WATER IS STILL OBSERVED IN THE WELL AFTER THREE DAYS, THIS IS A CLEAR SIGN THAT THAT CLOGGING IS A PROBLEM. • CHECK INLETS, PRE-TREATMENT CELLS, AND ANY FLOW DIVERSION STRUCTURES FOR SEDIMENT BUILDUP AND STRUCTURAL DAMAGE. NOTE IF ANY SEDIMENT NEEDS TO BE REMOVED. • INSPECT THE CONDITION OF THE OBSERVATION WELL AND MAKE SURE IT IS STILL CAPPED. • CHECK THAT NO VEGETATION FORMS AN OVERHEAD CANOPY THAT MAY DROP LEAF LITTER, FRUITS AND OTHER VEGETATIVE MATERIALS THAT COULD CLOG THE INFILTRATION DEVICE. • EVALUATE THE VEGETATIVE QUALITY OF THE ADJACENT GRASS BUFFER AND PERFORM SPOT -RESEEDING IF THE COVER DENSITY IS LESS THAN 90%. • GENERALLY INSPECT THE UPLAND CONTRIBUTING DRAINAGE AREA FOR ANY CONTROLLABLE SOURCES OF SEDIMENT OR EROSION. • LOOK FOR WEEDY GROWTH ON THE STONE SURFACE THAT MIGHT INDICATE SEDIMENT DEPOSITION OR CLOGGING. • INSPECT MAINTENANCE ACCESS TO ENSURE IT IS FREE OF WOODY VEGETATION, AND CHECK TO SEE WHETHER VALVES, MANHOLES AND/OR LOCKS CAN BE OPENED AND OPERATED. • INSPECT INTERNAL AND EXTERNAL INFILTRATION SIDE SLOPES FOR EVIDENCE OF SPARSE VEGETATIVE COVER, EROSION OR SLUMPING, AND MAKE NECESSARY REPAIRS IMMEDIATELY. • INSPECT UNDERGROUND PRETREATMENT CELL. REMOVE SEDIMENT OR DEBRIS FROM PRETREATMENT. IF SILT BUILDUP IS NOTICED, REMOVE SILT AND REPLACE CLOGGED FILTER FABRIC IMMEDIATELY. • LONG-TERM MAINTENANCE INSPECTIONS SHOULD OCCUR ANNUALLY. MINIMUM STANDARDS (MS) All applicable Virginia Erosion and Sediment Control Regulations and Minimum Standards shall be adhered to during all phases of construction. These include, but are not limited to the following: 1. STABLIZATION OF DENUDED AREAS: Permanent or temporary soil stabilization shall be applied to bare areas within seven days after final grade is reached on any portion of the site. Temporary soil stabilization shall be applied within seven days to denuded areas that may not be at final grade, but will remain dormant or undisturbed for longer than 30 days. Permanent stabilization shall be applied at areas that are to be left dormant for more than 1 year. 2. STABILIZATION OF SOIL STOCKPILES: During construction of the project, soil stockpiles shall be stabilized or protected with sediment trapping measures. The applicant is responsible for temporary protection and permanent stabilization of all soil stockpiles on site as well as soil intentionally transported from the project site. 3. PERMANENT VEGETATIVE COVER A permanent vegetative cover shall be established on denuded areas not otherwise permanently stabilized. Permanent vegetation shall not be considered established until a ground cover is achieve that, in the opinion of the county Inspector, is uniform and mature enough to survive to inhibit erosion. 4. TIMING & STABILIZATION OF SILT TRAPPING MEASURES: Sediment basins and traps, perimeter dikes, sediment barriers and other measures intended to trap sediment shall be constructed as a first step in any land disturbing activity and shall be made functional before upslope land disturbance takes place. 5. STABILIZATION OF EARTHEN STRUCTURES: Stabilization measures shall be applied to earthen structures such as dams, dikes and diversions immediately after installation. 6. SEDIMENT TRAPS AND BASINS: A sediment basin shall control surface runoff from disturbed areas that is comprised of flow from drainage areas greater than or equal to three acres. The sediment basin shall be designed and constructed to accommodate the anticipated sediment loading for the land disturbing activity. The outfall device or system device shall take into account the total drainage area flowing through the disturbed area to be served by the basin. 7. CUT AND FILL SLOPES: Cut and fill slopes shall be designed and constructed in a manner that will minimize erosion. Slopes that are found to be eroding excessively within one year of permanent stabilization shall be provided with additional slope stabilizing measures until the problem is corrected. 8. CONCENTRATED RUN-OFF DOWN CUT OR FILL SLOPES: Concentrated runoff shall not flow down cut or fill slopes unless contained within an adequate temporary or permanent channel, flume, or slope drain structure. 9. WATER SEEPS FROM A SLOPE FACE: Whenever water seeps from a slope face, adequate drainage or other protection shall be provided. 10. STORM SEWER INLET PROTECTION: All storm sewer inlets that are made operable during construction shall be protected so that sediment -laden water cannot enter the conveyance system without first being filtered or otherwise treated to remove sediment. 11. STABILIZATION OF OUTLETS: Before newly constructed stormwater conveyance channels are made operational, adequate outlet protection and any required temporary or permanent channel lining shall be installed in both the conveyance channel and receiving channel. 12. WORK IN LIVE WATERCOURSES: When work in a live watercourse is performed, precautions shall be taken to minimize encroachment, control sediment transport and stabilize the work area to the greatest extent possible during construction. Nonerodible material shall be used for the construction of causeways and cofferdams. Earthen fill may be used for these structures if armored by nonerodible cover materials. 13. CROSSING A LIVE WATERCOURSE: When a live watercourse must be crossed by construction vehicles more than twice in any six month period, a temporary stream crossing constructed of nonerodible materials shall be provided. 14. APPLICABLE REGULATIONS: All applicable federal, state and local regulations pertaining to working in or crossing live watercourses shall be met. 15. STABILIZATION OF BED AND BANKS The bed and banks of a watercourse shall be stabilized immediately after work in the watercourse is completed. 16. UNDERGROUND UTILITIES: Underground utilities shall be installed in accordance with the following standards in addition to other criteria: a.No more than 500 linear feet of trench may be opened at one time. b.Excavated material shall be placed on the uphill side of trenches c. Effluent for dewatering operations shall be filtered or passed through approved sediment trapping device, or both, and discharged in a manner that does not adversely affect flowing streams or offsite property. d.Material used for backfilling trenches shall be properly compacted in order to minimize erosion and promote stabilization. e. Restabilization shall be accomplished in accordance with these regulations. f. Applicable safety regulations shall be complied with. 17. CONSTRUCTION ACCESS ROUTES: Where construction vehicle access routes intersect paved public roads, provisions shall be made to minimize the transport of sediment by vehicular tracking onto paved surfaces. Where sediment is transported on to a public road surface, the road shall be cleaned thoroughly at the end of each day. Sediment shall be removed by shoveling or sweeping and transported to a sediment control disposal area. Street washing shall be allowed only after sediment is removed in this manner. This provision shall apply to individual lots as well as to larger land disturbing activities. 18. TEMPORARY E&S CONTROL MEASURE REMOVAL: All temporary erosion and sediment control measures shall be removed within 30 days after final site stabilization or after temporary measures are no longer needed, unless otherwise authorized by the local program authority. Trapped sediment and the disturbed soil areas resulting from the disposition of temporary measures shall be permanently stabilized to prevent further erosion and sediment. 19. ADEQUACY OF RECEIVING CHANNELS: Properties and waterways downstream from the development site shall be protected from sediment deposition, erosion and damage, due to increases in volume, velocity and peak flow rates of stormwater runoff for the stated frequency storm of 24-hour duration. 4. SCARIFY THE BOTTOM OF THE BAYFILTER BMP, AND INSTALL FILTER STONE PER SPECS. 5. PLACE STORAGE CHAMBERS AT SPECIFIED INVERT. CHAMBERS MUST BE FLAT WITH A 0% SLOPE. SEQUENCE OF CONSTRUCTION - STAGE 1 1. INSTALL CONSTRUCTION ENTRANCES OFF RIO ROAD AS SHOWN. INSTALL SILT FENCE SHOWN. 2. INSTALL STORM SEWER "SECTION A". REFER TO C14 FOR OFFSITE STORM. 3. WHEN OFFSITE STORM HAS BEEN INSTALLED, INSPECTED, AND STABILIZED, REMOVE CONSTRUCTION ENTRANCE ON PARCEL A1A. 3. INSTALL DIVERSIONS, SILT FENCE, INLET PROTECTION, & SEDIMENT BASIN. 4. CONTACT DESIGN ENGINEER AND THEN COUNTY INSPECTOR FOR INSPECTIONS. 5. WHEN ALL PARTIES HAVE APPROVED FIELD CONDITIONS, BEGIN MASS GRADING, STARTING AS SHOWN ON THIS SHEET. 6. MAINTAIN PERIMETER CONTROLS DURING TRANSITION INTO STAGE 2. SOIL EROSION & SEDIMENT CONTROL SYMBOLS SYMBOL N0. TITLE KEY 3.02 CONSTRUCTION ENTRANCE CE 3.03 CONSTRUCTION ROAD STABILIZATION CRS x x x x 3.05 SILT FENCE v 3.07 INLET PROTECTION IP w 3.09 TEMPORARY DIVERSION DIKE DD cn z DRAWN TO SCALE] 3.13 TEMPORARY SEDIMENT TRAP ST z 3.18 OUTLET PROTECTION OP w 0) TS 3.31 TEMPORARY SEEDING TS PS 3.32 PERMANENT SEEDING PS M 3.35 MULCH MU DC 3.39 DUST CONTROL SAFETY FENCE m_ 5x[p > No. 44183 1 TREE PROTECTION FENCING 'CIO LIMITS OF DISTURBANCE v `�' I v A\ \ \\ �11 \ _ v ° vV vo II • v / — = �+w��. ----moo --� �_ �w �w w \ y \` \ \WELL \ \ \ \ \ 400 0 C C 1 /-TQP,387.18 1Nd=385g I 1 I /,- r 73 ji IIIII / l ®J W/M/ w_ �I IIIII I II II i I I I III I I I ( I I I II I I I IIIII I�—I I ' II I I I I I 1 y/ CI\0 1� o a op p A \ �, \ \ 11 1 1 1 1 II I 410 \� 1 1 \ \ /o o \ / I //0 \ S;o�w // o ^ \ 1 / / / % I o 0 \ l 0 o ' // ' ' '// �y / II z` /;O / i° // \ SHED / ;/ / / / / / / / o o — i-� % o F41NSTALL I�LET J o cBASE & RISER. ° /v COVER TOPS. / I I DD 8 0 S C11 ° I / / \ vV/ I POW R / �/ o 0 qc 10 / A POL o I ' �o A V v I cv I I A v , ' / / I / o / ' / /v \ C11 I ICE g P ' / / / / mm // ° / / I I 5 C11 C,1 / ,� / / // / / / ° \\ \ \� F , j MU �w�8'• ♦� T C Dii 4%;e 1 99I I1 o\\ \v \ \\ \\\\ o ° I �wA4 I d O .`w �_wA3 IGIN I , w w _ wR 4�\ w W/ w 8 o °lei \ vp vII• / 18w WL� wco °--�o v \ I \ A\ \\ \ "��----/— — �wof o i—, — — — —- —wTw —w °I I° ° ----- w UD o c11 1° 'v v vv \v ° I / I I �o I I,,�a� 01 \ 0 \ \\ \\\\ \ I I I I i ,°ate I '(au --- A O ow I a+u� 1� — — / w -- �II �—,p o w � DEMO PORTIONS OF DRIVEWAY \\ \ "'— CHY-0HU 0HU 0HI-01N1— —7IIu 0T—auk 0M—alb—au�c�--- °-� I O G� / �Ofp,_ --- _— — w w \ 40 vv o A V IN CONFLICT WITH BASIN. .v / / / 1 I V A I G I I 0Hj4-- / w � w RWSA W z- _ _ _ _ _ D P I L o o \\°° \\ II 7�aN� — _ `� `w<� ♦� p \ 11 • 1 1 <\ S B 1 v v / / \ � � / � � 1 I I � / / / �V I \ I I p � 1 I °�� �� - 470 / / / / / I l ° G n I I a''U� N 9 .7 / / y <i �lv 1 II 1 II I / �� v v I v ° I� 2 2 '1<ti Ili\ /' /' /' '� S DIMEN BASIN ' <`��� I\ ` `''—«� ,CR'�VE' `D . �' I , CMJ DWAINAGE AREA v 210 - I� _ — 0 — , —« _ 'D00� �F� / / �/ _/ /// / '� // • // // // II 4.00 ACRES \\ HSG �v --�— ---- —470. STOCKPILE o � — --- AREA / / / I / ° X — \ ° -- / / I I P, v v ° ♦ ° ---- _ O I // // O ° I �� _—_-- -- O o O --21 B °° I '5 �, ° , -- -13 x -� 1 x �< I of ,��-�-------------- — IVI _ _ ---_ _ I I _ _ -- o I -�� —<-- ----------- --- 1 — \ICI , / / I�' ♦ / �\0�� 1I �I jam` +' i G� / / ��-------- - i i O 1 / I ,/ I I \/♦ i`� C1 /o W0O' D ov p o /o `/ \—- v I �� I I , l/ / • �� i I 47D- 1\�11V 1 �A I I I 47D /I ��'� / / // // 0 ///// ��' co�� A - SG ci HSG A ��of , o 00 I I (n o 41 \ \\ \ PRESERVED SLOPES \\ \\ \~ \\420�\��---'$- -- \\------------------------/------ -- -440— ---- 4� l \ -----------------------------__ \ �---- _ - _ - r ---> PAVED DITCH i / r 1 TATE /ROUTE 631 w (D RIO OOAD EAST )3� Goo PRESERVED SLOPES n �� ' SURVEYED < 25% a Z O � -A CP LEGEND SOIL TYPE BOUNDARY RUNOFF FLOW DIRECTION SEQUENCE OF CONSTRUCTION - STAGE 2 � /' ° \ 1. MOVE CONSTRUCTION ENTRANCE TO NEW LOCATION SHOWN ON THIS SHEET AFTER STAGE 1 / SF /// i ;' / \ , / — �� AREA IS GRADED. // /l / Il \ 2. INSTALL ADDITIONAL PERIMETER CONTROLS AS SHOWN AS GRADING PROCEEDS. CONTACT DESIGN ENGINEER TO INSPECT AND CONFIRM PROPER INSTALLATION. � o C 1 / / / �o �' I ° I v / \ 3. INSTALL UTILITIES AND GRADE ROAD AREAS. `" // / / % I 4. MASS GRADING SHOWN ON THIS SHEET REPRESENTS INTERMEDIATE GRADES AND CAN BE � /,O�° '�\�i s c, I // / � �y / I � � ADJUSTED IN THE FIELD. / / / / / o / \ 5. MAINTAIN SEDIMENT BASIN UNTIL ALL UPSTREAM AREAS ARE STABILIZED. CONTACT BOTH DESIGN ��'° /� ,/ J/ _� ENGINEER AND COUNTY INSPECTOR BEFORE BASIN IS REMOVED. / CONTRACTOR SHALL SHED "� / / / / / % / / /- o ENSURE RIGHT-OF-WAY DIVERSION IS PROPERLY ° / 1 SF - MAINTAINED AND VERIFIED FUNCTIONAL AFTER EVERY WORKDAY /�/ ,/ ,l �vopl�� ° I -CONTRACTOR �v LAYDOWN \ 9, ' I I STORAGE AREA o /; v C11 �/ II / v POWER A , ✓ / 10 // cNo � I / A POLE rn j Co o`_''o oWo� o I I I IP cr, • v �0 F I F �w wsq DD 5 I I / ��,; �w C11 �y WD I - �w<� / wA4 �� I \ \ \ g \ �� I w �W �w \ A3 \� \ \ \ 39 \ \9e I I ; o� \ DO NOT INSTALL LOVER UCE �- I �w —w / v I I vPARKINVG UNTIL ALL v Tw —w I I I \ - I I \ / \ �'' \ \ \ i �REA UPSTREAM\ �43 THE \ \ — — ` w D D jil 0o`er\ 1ti BASIN IS\STABILIZI=D \ --__ _ - — �w �w _ C / -_ BUGp� I w � I v �� AND BASINvIS REMbVE v -- / - - - >� _ ,� »' CC) T\ O I \ / / UGE w 00 \ \ I SF ` , \ \ \ `\ \ I I — "'� UGE / �w18 RWSA WL N Q w cn w J I _J w zw w < w 0 � NQ w 0) 0 1 M. 5Himp > Na. 1 S3 ,�`���CENAI. �# O E _UGE w S\ 0 �'- — — -- ---�_ �GE GEC-� w�lw—w rnv \ 11NELL `vim \ AV A 1 C10 v v v ` T �� I i E2 �� \ w I V C1 v / / - - - - 450 =�-� UGE T w w w 8 PM "" b I T I C11 /W_WWE-Lt�, `\ --\ 1 ` I I 086 0 �1 y Lw_ » \ I I \\ \ I , I I �--- — — \� �w 4 0 \ S oo ; 4���0�\w� UG °M \ \ r T \ I / f� —/,w _�_E UGC _ wow EX 18 0313 ° l �ww E3 // / I �� \V I II // I \ I co ��— --- �w�w R�/Sq w� �� ,��/ / / / I I I I \ w� I I / I \ \ I I —470 �w �w �G�\ 47 _ CC", \ o U - / �p II I / / 10 2 8 PS I » v YS(D/ Cl / // / / / III I w w o-w w 0 1� I I T I \ 10 vv -_-- - 470 -- \ ////1��,,°//,-/M ��/1 / II rr�/ / /I /) _H_2— _—_---------_—_--- w—b� p�w N PHASE 2 STOCKPILE E. ---- 6-4 - --- --------- -----�°� O_ ---___ -'_ _ �W M/� // I I I I ,// _/° I/ s / 1» / PHASE 2 1 �•- / ----- �� °�----- 1 / / STOCKPILE I » \ ---- ----- - --- ------ --- - - - - - - - - - - - - --- / ___�---------------- I \F W_w I --5$ I __-- _ --- / PHASE 2 STOCKPILE 10 �p / / I D D- C11 / - - cc \ � � � \ - ---------------- ------------ ---------------------- - - - - - 10 �� F /// � 0 // I � rww 13-- I I v I I 7 / / / / _ -- I 5 h / / / / � C10 / Cl \ II I I \ Cl W�� W w I o o P o v \� 26 C10 / cj 4 4 �o o c+, o A �V A\ \ I / 1 I 44,E o N C o, A \ ,o ti� � � � 1 � � I \ � v l V \ 1 I C10 v I I I' I I I v ,\ p I �2 , I w V A I I I I I I 41p, A\ 8 \ �C w I I I \ \ C11 \ \ \ DC , U4. 41 CD 0 PRESERVED SLOPES \ _ _ _ \ — _ ��---� �__\ — __________________________ -- — ----- —--- =-- - ---__ —�------------------ ,--_ Y — 410 1 1 \ 30 0 30 60 90 Scale: 1 "=30' SEQUENCE OF CONSTRUCTION - STAGE 3 �� o „ ° 1 `� / ° ° zG Ijj / o V / / / / � /; // ,/ �► / f =_ \ \ \ SHED / / / / ;/ / // / o 1. INSTALL SILT FENCE WHERE NEEDED FOR ANY FINAL PERIMETER GRADING (PRIMARILY FOR REMOVAL OF SEDIMENT BASIN AND DIVERSIONS ALONG THE PERIMETER) 2. AFTER SEDIMENT BASIN IS REMOVED, INSTALL STORMTECH BMP AND LOWER PARKING AREA. DO NOT INSTALL STORM CARTRIDGES UNTIL SITE HAS BEEN ENTIRELY STABILIZED AND SYSTEM HAS BEEN CLEANED OUT. 3. WHEN SITE HAS BEEN STABILIZED, HOUSE CONSTRUCTION MAY BEGIN. 4. DURING HOUSE CONSTRUCTION, AREAS THAT ARE NOT BEING DISTURBED MUST REMAIN STABILIZED. INSTALL SILT FENCE PROTECTION FOR LOTS UNDER CONSTRUCTION. 5. IMPORTANT: RAIN GARDENS SHALL BE INSTALLED LOT BY LOT. DO NOT INSTALL RAIN GARDENS UNTIL EACH RESPECTIVE HOUSE HAS BEEN CONSTRUCTED. THE RAIN GARDEN UNDERDRAINS SHALL BE CONNECTED TO THE STORM DRAINS WITH INSERTA-TEES AS THE FINAL STEP OF LOT CONSTRUCTION. CONTACT DESIGN ENGINEER FOR INSPECTIONS OF THE RAIN GARDENS. 6. DO NOT INSTALL BIOFILTERS UNTIL ALL UPSTREAM AREAS ARE PERMANENTLY STABILIZED. C11 PHASE 3 STOCKPILE /4 i I A5 1 / 0I � Co rnco I / ti�Cv Ilb �5 � I lat. E � v I S C11 V A \ \ v V v V O FF ( I -Lw A3 �v — �w W W W \7 W _ v _ �y ��'I-430� %—uE�u�'�u�\ w �w l �W I I °� I I 1 V 1\ `� A F \ — --=— --✓ cEE p iW W \ I c00 Q V I 1 �1 A \ �O�SF V O i — -- �_co°. E W � �, _ �E �� w SOIL EROSION & SEDIMENT CONTROL SYMBOLS SYMBOL N0. TITLE KEY 3.02 CONSTRUCTION ENTRANCE CE V) w Z F 3.03 CONSTRUCTION ROAD STABILIZATION CRS w O 3.05 SILT FENCE SF N 0) ~ N 3.07 INLET PROTECTION IP w 3.09 TEMPORARY DIVERSION DIKE DD cn w J I J 3.13 TEMPORARY SEDIMENT TRAP ST z w ►� w 0 3.18 OUTLET PROTECTION OP W � NQ w I � U 3.31 TEMPORARY SEEDING TS 3.32 PERMANENT SEEDING PS 3.35 MULCH MU 3.39 DUST CONTROL DC , SAFETY FENCE m_ 5x[mp > No. 41183 TREE PROTECTION FENCING LIMITS OF DISTURBANCE �� ucE�W V �cA w�W � _ o ___ _ 1 w \ \ \\ \ \ \ \ \ \ 1 1NII ��0�6 OF I ____% —\ u� TW E2. \ \ \ p )<pQ 5F \ / / / ��— _ ocE� \ w A�<�gF1 L 6 jw \ w o I -- �w \ 1 / 6\ 1 \ \ \ I \ \ A00 \ —Y \ \ 16 1 \ ` \\ / /I _ uGE / w�w 400- 'z- w / w W�wo �� 1 �� I I I co _ �w �� /� , ✓��� /� ��� // /' / I� \�<�� / b6 �> �° �w W I 1 �w � �1c°� Vo � 3 TORY ✓ / / I I i ) 68 SF STORY T 28 3 STORY TH I /� \ _ 10 \ P \ 704 SFj � / 768 SF — I SF I O ED�/ / / / / / / / I /� / STORY TH / / 3 STORY TH / / // / / // // / j �i /l� / / �' // // 704 SF // / �P 768 SF ------------ ---- / 20 j / l / / / / ` S \ ' LL' ' •' •' ; 'I rn Q rn °'— I / / // p \ 6� o iv H2 oar �J--__ �O�?J I I, l / 1g/' c� z / 3-STORYFTH 3p / / // I / / I Vim 0-\ O -- / / / 7 _ — — / — STaR'F —— I / c^ 3 _ - /� - 76a SF ---------------�- STORY SF 1056 SF 3 STORY W W/'74 686 704 PHASE 3 MON Q Y TH HO9bSE 2 STOCKPILE 0SSF _-- -�- -- - --— — _ -_�_ —_-- - - �r 22 , II --- — — —_—___ _----------------_------------ U� 1 5� - % ----- _ ---- — /STORY TH/ 1 768/SF ��i'' 1/ j �;•;- I 3 \ r� 968 �� \ V \ / / `n/ �� 10 / % : I 6TORYCIS \\ / / / . ` O C11 sF TN o� �� i fr / 0 STORY TH ° / i i ° 768 SF / / / / /4 '�// / i �� �i C. I 3 l i' I \� W - LL.F STo D II I I W STOR TH / / / l C ����// i O —w� 3 ��BSFTN �� i� �i, 1 I I ' 3 STOI / ISTOR Y Y / TH /6B 768 SFj U 5 RY TN i 704 SF 0 \STI T7 COMMON HOUSE 1,815 SF�, C' C � O ORY F I w•_;�—�'`.'/;.,y ' `'=' `�'s `➢" ''`LL' vt. M I1 I \ ,/j/✓` / / 056 SF�uo / \ M c71 1 cn 1 1 \ \ \ V A \ T C11 v v41 9 / `-- ` �• \ \ \ Gov ^� \ V V o —)� ���� �� �� 41 6.0% I —�� / i i o xi — PRESERVED SLOPES STATE /ROUTE 631 RIO OAD EAST / _ DI • • 30 .• •• ■ ■ ■ ■ ■ Scale: 1 • 420 415 410 405 400 395 390 385 380 10+00 CONSTRUCTION OF A SILT FENCE (WITH WIRE SUPPORT) 1. SET POSTS AND EXCAVATE A 4"X4" 2. STAPLE WIRE FENCING TO THE POSTS. TRENCH UPSLOPE ALONG THE LINE OF POSTS. / A FLOW 3. ATTACH THE FILTER FABRIC TO THE WIRE FENCE AND EXTEND IT INTO THE TRENCH. 4 4. BACKFILL AND COMPACT THE EXCAVATED SOIL. G FLOW =1 ,1 EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. FILTER FABRIC - WIRE LLI_ .17 SILT FENCE (SF) W. WIRE SUPPORT Not To Scale NOTE: STIR. A6 MANHOLE IS PERMANENT. WHEN BASIN IS DEWATERED, USE PRECAST RISERS TO BRING STIR. A6 INTO PERMANENT CONFIGURATION PER DETAIL 4 ON C13. 10+50 11+00 11+50 DESIGN HIGH WATER (25-YR. STORM ELEV.) TOP: 406.0 MIN, 0.5'� TOP: 408.7 MIN. 2. 0' t MIN. 3. 0' MIN. 1.0' 67 C.Y./ AC. _ 48 RISER CREST= 405.0 "DRY" STORAGE C: WET TOP �( 67 C.Y./ AC. Now - "WET" STORAGE 6" DEWATERING DEVICE. INV. 404.0 B: SEDIMENT CLEANOUT POINT A: BOTTOM CONIC. BASE DESIGN ELEVATIONS MTHOUT EMERGENCY SPILLWAY (RISER PASSES 25-YR. EVENT) Riser DA Wet Wet Dry Dry Vol. 25 yr A B C Elev. (Acs.) Vol. Vol. Cy Vol. Cy WSE (Req.) (Prov.) (Req.) (Prov.) 400.0 402.0 404.0 404.00 4.00 268.0 645.0 268.0 274.0 424.00 SEDIMENT BASIN DESIGN TABLE NOT TO SCALE 420 415 410 405 400 395 390 385 12+0p0 GRAVEL CURB INLET SEDIMENT FIL TER GRAVEL FILTER* RUNOFF WATER SEDIMENT J CONCRETE GUTTE 12' WIRE MESH FILTERED WATER D o a a - 0 0 -_ D o D d G 4 IT a o - Da A 12" CURB INLET SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS WHERE PONDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO CAUSE INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND UNPROTECTED AREAS. * GRAVEL SHALL BE VDOT #3, #357 OR 5 COARSE AGGREGATE 1992 3.35 Source: Va. DSWC TABLE 3.35-A ORGANIC MULCH MATERIALS AND APPLICATION RATES RATES: MULCHES: NOTES: per Acre Per 1000 sq. ft. Straw or Hay 1 � - 2 tons 70 - 901bs. Free from weeds and coarse (Minimum 2 matter. Must be anchored. tons for Spread with mulch blower winter cover) or by hand. Fiber Mulch Minimum 35 lbs. Do not use as mulch for 1500 lbs. winter cover or during hot, dry periods.* Apply as slurry. Corn Stalks 4 - 6 tons 185 - ?75 lbs. Cut or shredded in 4-6" lengths. Air-dried. Do not use in fine turf areas. Apply with mulch blower or by hand. Wood Chips 4 - 6 tons 185 - 27S lbs. Free of coarse matter. Air- dried. Treat with 12 lbs nitrogen per ton. Do not use in fine turf areas. Apply with mulch blower, chip handler, or by hand. Bark Chips 50 - 70 cu. 1-2 cu. yds. Free of coarse matter. Air - or yds. dried. Do not use in fine Shredded turf areas. Apply with Bark mulch blower, chip handler, or by hand. * When fiber mulch is the only available mulch during periods when straw should be used, apply at a minimum rate of 20001bs./ac. or 45 lbs./1000 sq. ft. 5 MULCHING(MU) 3 INLET PROCTION IP e11 Not To Scale C11 Not To Scale TABLE 3.39-A ADHESIVES USED FOR DUST CONTROL Water Application SAFETY FE1 � CE Dilution ) Type le Rate Adhesive (Adhesive: Water Nozzle Gallons/Acre Anionic 0 PERSPECTIVE VIEW I ;;I I ;;I I ;;I I;; 10' MAX. I;;I CONCRETE BRACING FOOTING n ::I \-WIRE � FABRIC LINE POST GROUND LINE PERSPECTIVE VIEW PERSPECTIVE VIEW PLASTIC FENCE METAL FENCE SOURCE: CONWED PLASTICS VDOT ROAD AND BRIDGE STANDARDS VA. DSWC 4 SAFTY FENCE(SAF) C13 Not To Scale PLATE. 3.1 -1 Asphalt Emulsion 7:1 Coarse Spray 1,200 Latex Emulsion 12.5:1 Fine Spray 235 Resin in Water 4:1 Fine Spray 300 Acrylic Emulsion (Non -Traffic) 7:1 Coarse Spray 450 Acrylic Emulsion (Traffic) 3.5:1 Coarse Spray 350 6 DUST CONTROL DC C11 Not To Scale TABLE 3.31-C TEMPORARY SEEDING PLANT MATERIALS, SEEDING RATES, AND DATES N 00 00 w SEEDING RATE NORTH 7 TEMPORARY SEEDING TS C11 Not To Scale TEMPORARYDIVERSION � DIKE _Compacted Soil STONE CONSTRUCTION ACCESS STONE CONSTRUCTION ACCESS 18" min. Flow 4.5' min. DIVERSION DIKE (DID Not To Scale 70' MIN. 3" SCR-2A ASPHALT TOP COURSE 27* MNI. 2 1 A AGGREGA1 BASE PROFILE 70' MIN. ASPHALT PAVED WASH RACK EXISTING PAVEMENT c'�� EXISTING 2% 2% PAVEMENT- ') r 2% 12' MIN.* *MUST EXTEND FULL Oil= I ~ ( POSITIVE DRAINAGE I TO SEDIMENT OF INGRESS AND EGRESS } TRAPPING DEVICE OPERATION PLAN 12' 4'IN• POSITIVE DRAINAGE 2% TO SEDIMENT TRAPPING DEVICE FILTER CLOTH-/ SECTION A -A A 111ffinnuln water tap of 1 nlch must be filstalled Mt11 a mi111111tun 1 inch ballcock sllultoffval� e snppl�uY� a ��'asll llose ��7t11 a (llallleter of 1.5 i1lClles for a(1e(juate constant pressure. Wash water nlllst be carried away froln the entrance to all approved settlni, area to remove sediillerlt. All se(liillent sllallbe prevented fi-oni entering stonll (Iranls, ditches or watercourses. PAVED WASH RACK '40 SCALE PAVED CONSTRUCTION ENTRANCE CE Not To Scale PERMANENT SEEDING SPECIFICATIONS February 16 through April 30: Kentucky 31 Fescue - 128 lbs/acre; Red Top Grass - 2 lbs/acre; Annual Rye - 20 lbs/acre. Add 20 lbs/acre Indian grass when slopes are greater than 3:1. May 1 through August 15: Kentucky 31 Fescue - 128 lbs/acre; Red Top Grass - 2 lbs/acre; Foxtail Millet - 20 lbs/acre. Add 20 lbs/acre Indian grass when slopes are greater than 3:1. August 16 through October 31: Kentucky 31 Fescue - 128 lbs/acre; Red Top Grass - 2 lbs/acre; Annual Rye - 20 lbs/acre. Add 20 lbs/acre Indian grass on slopes greater than 3:1. November 1 through February 15: Kentucky 31 Fescue - 128 lbs/acre; Red Top Grass - 2 lbs/acre; Winter Rye - 20 lbs/acre. Add 20 lbs/acre Indian grass on slopes greater than 3:1. MULCHING SPECIFICATIONS: Straw or hay at a rate of 2 tons/acre. Must be anchored. Spread with mulch blower or by hand. LIME AND FERTILIZER SPECIFICATIONS: Lime and fertilizer needs should be determined by soil tests. Soil tests may be preformed by the Cooperative Extension Service Soil Testing Laboratory at VPI&SU, or by a reputable commercial laboratory. Information concerning the State Soil Testing Laboratory is available from CITY Extension Agents. Under unusual conditions where it is not possible to obtain a soil test, the following soil amendments will be applied: For Permanent Seeding: Seeded areas shall be limed at a rate of 2 tons per acre, and fertilized at a rate of 1,000 lbs. per acre of 10-20-10 (10 lbs. per 1,000 square feet) or equivalent. For Temporary Seeding: Seeded areas shall be limed at a rate of 2 tons per acre, and fertilized at a rate of 600 lbs. per acre of 10-20-10 (10 lbs. per 1,000 square feet) or equivalent. PERMANENT SEEDING (PS Not To Scale V ro 0 0 w U I 0 0 z w oW �- W ,. z 1 z W I WZ a � z � 0 o In w� z �k w� r N O v ~ N Q w t cn W J `� 0 J o > w z� I- < 0 w � w 0 � U 1 M. 5HIl1�iP > No. 4 1$3 ��C3I1TAI. V6�# of E o v U �10 U V W 0 W N a � N 0 w Q �r - w0 O ^ Z V O � U as w 0 � W LL J Z Q J � C G nn W LCJL L O N � J > < w Date 09 23 2019 Scale Sheet No. C11 OF15 File No. 16.009 END -SECTION 12" - sa" PIPE HUB END ON OL)TLET ENO -SECTIONS SPIGOT END ON INLET END-SECTIDM xx E {A CONCRETE TO 8E LLL — JJ 4000 PS[ MINIMUM PLAN DIAMETER C B OF PIPE �,cm� xwO STE I� D E I•�—PAY LINE 1,17F'TIf1N Y-Y FART V1FW END SECTION 01MENSIONS PIPE DIAMETER A B C D E 12" 4" 2'-D" 2'-0" 4'-0" 2'•0" 15" 6.. 2..3" p_g.. 4M_O" 2._6,. 1B" 9" 2'-3" 1'•y" 4'-0" 3'•O" 21" 9 21-11" 2'•1" 5'-0" 31-5" 2a" 9 3'-7" 2'-6" 1.,.. 4'-0" 17" ''D 4'-0" 2'-1" 6'-I" 4•-6" 30" T-0" 4'-6" 1•-7 ' 6'-1 5'-D" 36" T-3" 5'-3" T-10 8--1 S2" 1._,N�� 5._3�� 2'-11" 8-_2.' ff_8. 46.E 2•_O'. 5•_O" 2_2. 8_2. 7_O. 54." 2•-3" 5'-5" g'-9 8'-2 7-1, ALTERNATE END -SECTION 12" - 60" PIPE ES-1 HU8 END ON OUTLET END-SECTKHNS SPIGOT END ON INLET ENO -SECTION Jx � � jx CONCRETE TO BE LLL E J 41000 PSI MIITAUM L PLAN ~ C B DIAMETER OF PPE ass are STEEL FAHRIC REINFORCEMENT � + _ A i J 0 g PAY LINE END VIEW SECTION X-x END SECTION DIMENSIONS PIPE DIAMETER A B G 0 E 12" 4" 2'•0" 4'-1" 6'-T" 2'-a' 15' 6., 18' 9" 21•3" 3'-i0" 6'•1" 3'7" 21, 8" 2'-11" 3'-2" 6'•1" 3'-6" 24•' 10" 3'-7" 2'•B" 6'•3" 4'-O" 33•' Iia' 4'-TO' .� 3,_3 ��� B�_7 .� 36" R'-t '• 42" f •g.. 5'-3" 2'-11" 9'_g•' 6•_6" 4tP 1 21_0" £._OY, 2'-2" 3'-211 T-O" 54" 1 2'-3" 1 T-5•' 1 2'•11" 8'-4" 7'-6-' 60" Z-6" 5'_0" 1 3._3,- PAY LINE c e NOTES PIPE LENGTHS SH4WN ON PLANS ARE BASED ON END -SECTION DESIGN SHOWN ON THE LEFT. W THE CONTRACTOR ELECTS TO USE THE ALTERNATE DESIGN SHOWN ON THE RIGHT, LENGTHS WILL 9E REDUCED BY RT _ THE DFFERENCE IN DlAEN51ON "D"_ SLOPE DETAIL SPECIFICRTION REFERENCE FLARED END -SECTION FOR 12"-60" CONCRETE PIPE CULVERTS 3'17 VIRGINIA DEPARTMENT OF TRANSPORTATION REV. 7/OS 10101 ■ I < SHAPE TO ELEVATION OF MID -POINT OF LARGEST PIPE. SHAPE TO I R CONTOUR I I OF PIPE I I I I I I 9 SLOPE TO DRAIN TO INVERT OF OUTLET PIPE SECTION A -A METHOD OF TREATMENT IN DROP INLETS �e NOT: OF MANHOLE AND INLET INVERTS IN ACCORDANCE WITH \� THIS DRAWING IS TO APPLY TO THOSE STRUCTURES SPECIFIED \ SLOPE TO DRAM ON PLANS OR WHERE INVERT OF PIPE IS ABOVE INVERT OF 1 TO AVERT OF STRUCTURE. / OUTLET PIPE MANHOLE OR DROP INLET IS TO BE FORMED AND CONSTRUCTED IN ACCORDANCE WITH APPLICABLE STANDARD OR SPECIAL DRAWING. e THE INVERT SHAPING AS DETAILED HEREON IS TO CONSIST OF A PORTLAND CEMENT CONCRETE MIX CONFORMING TO CLASS A3 OR CLASS C1, EXCEPT THAT 25X OF COARSE AGGREGATE MAY BE UP TO 4" IN DIAMETER AND CONSIST OF STONE, BROKEN BRICK, �••:f ;< BROKEN CONCRETE OR BROKEN CONCRETE BLOCK. THE SURFACE N;: n:.;�•;;'rj., SHALL BE LEFT SMOOTH BY MEANS OF HAND TROWELLING. NONE IIV OF THE COARSE AGGREGATE SHALL REMAIN EXPOSED. Vi.. - PETALS OF INVERT SHAPING AS SHOWN HEREON ARE FOR EXAMPLE PURPOSES ONLY. EACH MANHOLE OR DROP INLET IS SHAPED INDIVIDUALLY TO BEST FIT THE PARTICULAR INLET ANDD OUTLET CONFIGURATION AND FLOW LINES. SECTION B-B PLAN METHOD OF TREATMENT IN MANHOLES VpQT SPECIFICATION ROAD AND BRIDGE STANDARDS STANDARD METHOD OF SHAPING REFERENCE SHEET 1 OF 1 REVISION DATE MANHOLE & INLET INVERTS 302 106.08 VIRGfiA DEPARTMENT OF TRANSPORTATION TEMPORARY SLOPE DRAIN EARTHEN DIKE PROVIDE INLET CORRUGATED METAL (COMPACTED) PROTECTION EXTENSION COLLAR A �L WATERPROOF SEAL 24:1 p D+6" PROVIDE OUTLET PROTECTION STANDARD FLARED END SECTION SECTION VIEW NOTE: SEDIMENT MAY BE CONTROLLED AT OUTLET IF UPLAND PONDING WILL CREATE PROBLEMS EARTHEN DI"` (COMPACTE[ 18" D+6" SECTION A - A TEMPORARY SLOPE DRAIN (AS NEEDED SIL-1 05 BARS • B" C-C TYP. 85 BARS C all C-C TYP. ..I �. A A B TT B TT rill' PLAN WALLSTRUCTURE IZE AND PLAN n=— CLASS A3 CONCRETE CLASS A3 CONCRETE SECTION A -A NOTES: SECTION B-B 1. THE STANDARD SAFETY SLAB (SL-1)IS TO BE USED ONLY WHEN SPECIFIED IN THE PLANS ON THE DRAINAGE SUMMARY SHEET AND/OR THE DRAINAGE DESCRIPTION. FOR MANHOLES JUNCTION BOXES,AND DROP INLETS WITH HEIGHTS GREATER THAT 12 FEET, THE SPACING OF ADJACENT SAFETY SLABS SHALL BE B'TO 12'WITH NO SAFETY SLAB LOCATED WITHIN 6 FEET OF THE TOP OR BOTTOM OF THE STRUCTURE. SAFETY SLABS SHALL NOT BE LOCATED BELOW ANY INLET PIPE OF 30" DIAMETER OR GREATER. 2. THE COST OF THE SL-1 IS INCLUDED IN THE COST OF THE STRUCTURE. SEE CAST N PLACE DRAWINGS FOR FURTHER DETAILS 3. ACCESS OPENINGS ME TO BE STAGGERED FROM ONE SIDE OF STRUCTURE TO THE OTHER WHERE APPLICABLE. STEPS ARE TO BE STAGGERED ACCORDINGLY. _ S BARS B B" C-C TYP. 4. SAFETY SLAB MAY BE CAST -IN -PLACE OR PRECAST. CAST -IN -PLACE CONCRETE TO BE CLASS A3 (3000 PSI). PRECAST CONCRETE IS TO BE A4 (4D00 PSI). REINFORCING STEEL TO BE IN ACCORDANCE WITH AASHTO M31. •r !Yi' •i .' '. •rr�''i•i'. 5. ACCESS OPENNGS MAY BE 30" DIAMETER OR 30" SQUARE. WHEN STRUCTURE WIDTH IS LESS THAN 30" THE ACCESS OPENING SHALL BE RECTANGULAR (STRUCTURE WIDTH BY 30" LONG). TYPICAL PRECAST UNIT ROAD AI'ND 00BRI-1 STANDARDS TYPICAL CONCRETE SAFETY SLAB FOR DROP INLETS, SPECIFICATION SHEET 1 OF 1 REVISION DATE MANHOLES AND JUNCTION BOXES 302 106.14 VIRGINIA DEPARTMENT OF TRANSPORTATION rrr_TIZ-� rrrr rrrrTT�� VDnT 111 cc GRA VEIL AND WIRE MESH DROP INLET SEDIMENT FIL TER 18" MIN. GRAVEL* (1 2"MIN. DEPTH) i�1.�._.!��i�:•�•t��..«':mil oi7>�,��.�l�ll�. G A A : I I •. • L. C1 2 / Not To Scale Entrench Width -I Matting 6" Depth TYPICAL DITCH SECTION DETAIL Not To Scale TEMPORARY RIGHT-OF-WAY DIVERSIONS TYPICAL GRAVEL STRUCTURE RIGHT OF WAY DIVERSION 1 / F, / I / I /0 I I I I 0 I I I I I 0 I / I / GIB 0 \ ° \ \ \ E 011 �1\ \ 0 / / � I I I I I I 0 0 0� \ 1 1 I I ') I 1 C 1 O \ \ C _ DR, P I L T, = 8 1 NV 9 .7 � l / ' I 1 2 /2 ' 1 / I I I i i J I 60 O C �\ '(,n O o PIPE OUTLET CONDITIONS A ANLA WIIH NU ULFINLU CHANNEL L a 0% I I — III d T SECTION A —A FILTER CLOTH KEY IN 6"-9"; RECOMMENDED FOR ENTIRE PERIMETER NOTES: 1. APRON LINING MAY BE RIPRAP, GROUTED RIPRAP, GABION BASKET, OR CONCRETE. 2. La IS THE LENGTH OF THE RIPRAP APRON AS CALCULATED USING PLATES 3.18-3 AND 3.18-4. 3. d = 1.5 TIMES THE MAXIMUM STONE DIAMETER, BUT NOT LESS THAN 6 INCHES. Q10 (cfs) La (ft) Do (ft) 3Do (ft) d50 (in) depth (in) Outlet Condition Al 18.77 9.0 2.00 6.00 9.0 12.0 Channel OUTLET PROTECTION TABLE (OP 2 SEDIMENT BASIN PLAN VIEW C12 SCALE: 1 "=20' 3d a (MIN.) 'IPE OUTLET TO WELL )EFINED CHANNEL DRIP LINE SNOW FENCE BOARD FENCE CORD FENCE CORRECT METHODS OF TREE FENCING CORRECT TRUNK ARMORING TRIANGULAR BOARD FENCE (`_7�TREE PROTECTION FENCING Not To Scale Not To Scale Not To Scale Not To Scale 455 450 445 440 435 430 425 420 415 410 405 400 470 465 460 455 450 445 440 435 430 425 NEW �� •• IS IIIIIIIIN C�a1111010 Is5J.- IIIIIIINEIRIN IIII MEN INIIIII m�� IIIIIIIIN •1 IN .10i111RIMIIIIIIIIIERIM ' �11 �IIRIRIIE IIIIIIII 1u I.1 IIII IIIIIIIII MEN IIIIIIIIIIIINIM IIIIIIIIIIIIIN �_ ■ _/—iJ .% •. ■ /�%sm IIIIIIII IIIIIIII IIIIIIII IIIIIII IIIIIIII IIIII IIIIII ■ IIII MINE IIIIII III MINE IIIIII III - • �IIMINE IIIIII ■ IIII- � IIII_ MINE IIIIII III IIII .. .1 MIKA ■ C C C C 1 11 1 1 11 1 11 1 11 1 ��� '• FM 111111 ONE 1 11111111 ONE 1 11111111 1111 1 11111111 ONE—I11 IIII IIIIIIIII WINE —SIN IIII IIIIIIIII WINE —SIN I ONE 111111111 11.4 ONE 111111111 120111111111111 11--�.R:f�=iL� 051 WIT..W51111M/'/AN 1�01111111111111 ONE 111111111-u ��2 0p-PAMIRI-- _ _IIIIIIII _ EMI I_11 111111111 ■ilk �1 " i�11 �—'I�►\• �� � - NIIIIIIIII11 M I_ 1111011111 01 • �� _ IMIIIIIIIM - - - 111Pori 0111•alb 111111111 IIII IIIIIIIIIIERI IN 1 101 -- 0+00 IUtJU IItUU IItUU ILtUU ILtUU IJtUU STORM PROFILE B1—B6 C13 1" = 30' 12 STORM PROFILE B5-H2 C13 1"=30' 455 450 445 440 435 430 425 420 415 410 405 1 J+5000 470 465 460 455 450 445 440 435 430 440 435 430 425 420 415 410 405 415 410 405 400 395 390 385 380 2 STORM PROFILE A5—A5C C 13 1 " = 30' C1 ZO O C2 �� nj �I 435 430 425 420 415 410 405 425 420 415 6 410 L 0- 425 420 415 410 4 10+00 10+5005 5 STORM PROFILE C 1—C2 C13 1"=30' Mo - IIII IIIIII ■ MI1II RM �N =IN 11III!'��•J!f. 111110MINIIII 420 41 �' 410 405 400 395 415 410 405 400 395 390 385 ,�80 420 415 405 400 395 390 385 !- EWA - �EIIIIIIII MIMES - KIISM ■1ri 7 11111111 11 - IIIIII11 11MEN 1111'— - 405 410 400 405 395 400 390 395 385 80 390 380 10+00 z 10+5D 3 STORM PROFILE A5A—A5Z 385 C13 1" = 30' 380 10+00 xo B1 D2 - o�� -f 0 11 Ilfiy �� Imo■ � � ME -�II� RIIIIIIIIIII_ 1101 I_ 11111� ■- 10+00 10+50 6 STORM PROFILE Al —A5 C13 1"=30' �W 1111 �r 1111 _ mid 1111 .,Tit -- MIRE �- IIIIII 1I N11� "o'er IIIAII 1III o � � o � � 10+00 10+50 11+00 11+50 8 STORM PROFILE B2—F1 435 430 425 420 415 410 12+0005 `F'tJ 440 435 430 425 420 415 10+00 10+50 11 +00 11 +50 g STORM PROFILE G 1—G2 C13 1"=30' 1111_ %I?Ir] I'll IMWIMIIIII IIIIIIII IIIIIIII 1111 i �- �_©_ © �_ 1111111 1 IM i!' IIIIIIIIIIIIIHI - 1111 mM 1111111 IIII no.IIIIIIERI.. IIIIIIII_ IIIIIII 11111121 1111 �1. MEN -= III .:, WE WEN- �� 11111101 IIIMPI MEN MEN NNE � ..�II II� IIIIIIII MEN 1111 II ' • :�+�� � MEN 11111111 11111111 III%i' E0 MINI IIIIIIII MEN 15-431[( III■t!9 _ i 11111111 MEN IIIIIIII MEN i 11111111 MEN ocrHIIIIIIIIII ___ a 11. . 1F� i 11111111 MEN IIIIIIII MEN Q'' i 11111111 MEN 470 465 460 455 450 445 10+00 z f=- - 11+00 11+50 12+00 10 STORM PROFILE B2—E3 C13 1" = 30' MIRI- Ire IIIIIIQI ®- • r_� - IN _ MINE III _...�IIIIIIQ.IM mm- MINE MINE III MINE III III ��MINE III III �� MINE III III �� MINE III III �ZIGti 1111011� MINE MINE uwdw-q MINE IIII §MIII OEM. MINE lid MINE 470 465 460 455 450 i n+00 10+50 11 +00 11 +5045 13 STORM PROFILE 1- 3 C13 1"=30' 440 435 430 425 420 415 410 12+405 470 In 465 460 455 450 44 430 425 420 415 410 405 400 470 465 460 455 450 1%+00 10+50 11 +0045 14 STORM PROFILE 2- A2 C13 1"=30' IIIINA� Lv�r �- N ®- ■_ .. - d � c IN III IN III C III —A i ■ S7 In IIIIi4 �r]i IN IIIIIIII ' ■ ■ © IN 10+50 11+00 4 STORM PROFILE A5—A7 C13 1" = 30' NOTE: CONCRETE INLET SHAPING (IS-1) REQUIRED ON ALL STRUCTURES WITH A 4' OR GREATER DROP AND SAFETY SLABS (SL-1) ON ALL STRUCTURES TALLER THAN 12'. �� V =vim 1111 ■ IIIIIIIIII01.. 1111111111121101 �J 11111111111�112 __ M. �r 111121 C �� INNIZI - ■ MINI IIMI —■ �A pwaIl- ■ lip i � IN 445 440 435 430 425 420 12+0015 420 415 410 SIR Ffel 395 390 385 11+5080 Al - ' Department ofCammunily r2velrpunant Construction record Drawings (As -built) for VSMP The following is a list of inforrrtution required on construction record drawings for stormwater facilities (reference Water Prote Lion Ordinance 17422). ft is pre ra le that the cansrruc-iion record drawing be pre red by someone ether Than the designer. Please do nuz provide design drawings as comvtruction record drawingm A. A signed and datW pajf Tonal seal of the preparing ungincc-ror snrvcyr yr. B. The name and address or the firm and individual preparing the drawings on the: title sheet_ C°_ The constructed location of all ilem.i associated wit1h each facility, arid the inspection words to verify proper dimensions, materials and installation. 1-be items include, but are not lirr>I.iled to ll-c following: 1. inspection Records and photographs for pipe trenches and bedding, including underdrains_ 2. 'V iflea Pipe Inspection for any pipes which arc not accessible: or viewable. 3. Updated Location with germscoordinates of all facilities. Verli ted drainage Area maps for the drainage area Cmated, uld for drainage to the facilities. 5. Current physical and topographic survey for all earthen structures. Ponds should include a survey of the pond bottom. Surveys should verify pond voltllrlen are per design. Ccmetinns may to required for alterations rr;)m Rho. design. C. Plants, location and type. 7, Plaits and profiles ror all culverts, Pipes, iRlsers, Weirs and Drainage Structures. - Display the installed lype of drainage structures, culverYpipe size, weirs, materials, i;nlcts or end treatment(s), inlet and outlet protecti€inr alignment and invert elevations compared to design- s. comp a(at]ons. For significant dct+tations mini tics ign, provide seaicd computations vLv jfying that the as -built condition is equivalent of utter than design. 1), rich i,in - Display the constructed location of all ditch luxes and channels, inc tuding typical sc�;Iions and linings. lit_ Easements - Shoes al I piatted easemenu; with dead beak references labeled_ Facilities and drainage rout be within plattW casemenis. Provide: copik�s of rmorclud dcX:-0mcD1S. 11. Guardrail, fence or other safety prow isions - Dispiay the oonstructed location of all safety provisions; fences, guardrail, including the type. length and applied end treatments, compared to design. 11 Material lavers - biofi[ter media, stone layers, sand lagers, keyways and cares -must be verified as to material types and depths, Include inspeefion reports, Nwing -or test pit repot#. and Inaterial's € erlificalions. Hiortiter media must be an app€ovod stale mix. 13, Access roads - show location of a,cces.-; roads, surface trealrnen4 drainage, etc, as applicable, 14. Compuction reports arc rcyuircd to verjfy fill wrnpaction in dams. 15. Manufacturers certifications for proprietary B P's certifying groper installation and l`unefioning. I R SPIKE 349.12' U co /I / / / / SEWER CONNECTION THROUGH TMP 61-210B 1 " = 30' OFFSITE SANITARY SEWER BY OTHERS. 30 0 30 60 90 Scale: 1 "=30' FIR -- o 1^ c P2 u' Z F / I /A,z C-9 :2 = `il \ vv/ / w I I (n w = A O 0-) ---I m I ° 4 ° r ) / Ti-�\ 455 450 445 43 2 BIOFILTER C 1 PLAN C14 1 " = 20' - - - �;a■��.�.■ic���ai■sa�.�wa�:���u��'Plii�:Tit:lt:� • 11 .�� n �..■...■..a...'y,y„�•......■■..■..■...■...■...■...■a"'eat.'- u.......m ii�L'aOaII �..E■E� , : . ■ _� , ►�>tb gppppppppl��al�laallra:i:� El Ilion T�11_010_051 T ILTNj- �� 11 10+00 10+50 3 BIOFILTER C 1 PROFILE C14 1" = 20' i5 E50 1—YR WSE=441.42 10-YR WSE=445.59 25-YR WSE=446.10 E45 40 W DIA 11+0 35 4 G Na. 44183 CIO At- s'tvlv�x. � ■r 4�-- � S � s 0 s*/ \ s / D ' M Co \ s \ o S / z— Yk,— M — M ---'oj 41 0 s �,rTt �BIORLTER C2 PLAN C14 1" = 20' FILTER MEDIA: 175 SF X 3.0' DEPTH. PEA GRAVEL: 175 SF X 0.25' DEPTH. #57 STONE: 175 SF X 1.75' DEPTH. RI -,FRS 42� • ► No � : - ��AltYl■ 414 415 iu nvrr uu 411(b+00 @ 411.30 6" SCHEDULE 40 PERFORATED PVC INV.=413.500 v �0 E BERM H LD BY 6"X6" SEAL WITH IMPERM ABLE LINER. 420 ED PEA 1—YR WSE=413.51 MATE FILTER B/W 10—YR WSE=413.91 STONE k SOIL MEDIA 25—YR WSE=414.17 415 RIC F ONLY (__5BIOFILTER C2 PROFILE C14 1" = 20' 10+Al0 Project: Ecovillage, VA (S150496) Chamber Model - MC-4500 9tormTechr Units - Imperial cIl�kHemraMem�1''' Number of Chambers- 32-'""'"° "'!,Quf1I!<P�. Number of End Caps - 4 Voids in the stone (porosity) - 40 % Base of STONE Elevation - 404.50 ft Amount of Stone Above Chambers - 12 in ❑' IndU& Perimeter Stone in calculations Amount of Stone Below Chambers - 30 in Area of system - 1632 sf Min. Area - 1299 sf min. area Height of System inches Incremental Single Chamber cubic feet Incremental Single End Cap cubic feet Incremental Chambers cubic feet Incremental End Cap cubic feet Incremental Stone cubic feet Incremental Ch, EC and Stone cubic feet Cumulative System cubic feet Elevation feet 102 0.00 0.00 0.00 0.00 54.40 54.40 7679.43 413.00 WQ Volume: 6924 101 0.00 0.00 0.00 0.00 54.40 54.40 7625.03 412.92 System Outlet: 405.5 100 0.00 0.00 0.00 0.00 54.40 54.40 7570.63 412.83 Volume Below Outlet: 1 652.80 99 0.00 0.00 0.00 0.00 54.40 54.40 7516.23 412.75 Volume Subtotal: 7576.80 98 0.00 0.00 0.00 0.00 54.40 54A0 7461.83 412.67 WO Elevation: 412.85 97 0.00 0.00 0.00 0.00 54.40 54.40 7407.43 412.58 96 0.00 0.00 0.00 0.00 54.40 54.40 7353.03 412.50 BayFilter model 530 95 0.00 0.00 0.00 0.00 54.40 54.40 7298.63 412.42 Volume per fitter 2500 94 0.00 0.00 0.00 0.00 54.40 54.40 7244.23 412.33 Required Head 32 93 0.00 0.00 0.00 0.00 54.40 54.40 7189.83 412.25 Minimum Outlet 402.83 92 0.00 0.00 0.00 0.00 54.40 54.40 7135.43 412.17 Fitter outlet invert F402.83 91 0.00 0.00 0.00 0.00 54.40 54.40 7081.03 412.08 90 0.04 0.00 1.31 0.00 53.88 55.19 7026.63 412.00 Number of filters 3 89 0.12 0.01 3.72 0.04 52.90 56.65 6971.44 411.92 88 0.16 0.03 5.27 0.11 52.25 57.63 6914.79 411.83 87 0.21 0.05 6.68 0.19 51.65 58.52 6857.16 411.75 86 0.27 0.07 8.59 0.27 50.86 59.71 6798.64 411.67 85 0.45 0.09 14.49 0.35 48.46 63.30 6738.93 411.58 84 0.67 0.11 21.29 0.45 45.70 67.44 6675.62 411.50 83 0.80 0.14 25.57 0.57 43.95 70.08 6608.18 411.42 82 0.91 0.17 29.06 0.67 42.51 72.24 6538.10 411.33 81 1.00 0.19 32.09 0.77 41.26 74.12 6465.86 411.25 80 1.09 0.22 34.79 0.86 40.14 75.79 6391.74 411.17 79 1.16 0.24 37.23 0.97 39.12 77.32 6315.95 411.08 78 1.23 0.27 39.49 1.08 38.17 78.74 6238.63 411.00 77 1.30 0.30 41.59 1.19 37.29 80.07 6159A9 410.92 76 1.36 0.32 43.55 1.29 36.46 81.31 6079.82 410.83 75 1.42 0.35 45.40 1.39 35.68 82.47 5998.51 410.75 74 1.47 0.37 47.15 1.48 34.95 83.58 5916.04 410.67 73 1.53 0.39 48.80 1.58 34.25 84.63 5832.46 410.58 72 1.57 0.42 50.38 1.67 33.58 85.63 5747.83 410.50 71 1.62 0.44 51.88 1.76 32.94 86.59 5662.20 410.42 70 1.67 0.46 53.32 1.85 32.33 87.50 5575.61 410.33 69 1.71 0.48 54.69 1.94 31.75 88.38 5488.11 410.25 68 1.75 0.50 56.00 2.02 31.19 89.21 5399.73 410.17 67 1.79 0.53 57.26 2.10 30.66 90.02 5310.52 410.08 66 1.83 0.55 58.47 2.18 30.14 90.79 5220.51 410.00 65 1.86 0.56 59.63 2.26 29.64 91.53 5129.72 409.92 64 1.90 0.58 60.75 2.33 29.17 92.25 5038.18 409.83 63 1.93 0.60 61.82 2.41 28.71 92.94 4945.94 409.75 62 1.96 0.62 62.85 2.48 28.27 93.60 4853.00 409.67 61 2.00 0.64 63.84 2.55 27.84 94.24 4759.40 409.58 60 2.03 0.66 64.80 2.62 27.43 94.85 4665A6 409.50 BMP D REQUIRED WATER 59 2.05 0.67 65.72 2.69 27.03 95.45 4570.31 409.42 QUALITY VOLUME 58 2.08 0.69 66.61 2.76 26.65 96.02 4474.86 409.33 = TV FROM VRRM 57 2.11 0.71 67.46 2.83 26.29 96.57 4378.84 409.25 56 2.13 0.72 68.28 2.90 25.93 97.11 4282.27 409.17 = 4595 CF REQ. 55 2.16 0.74 69.08 2.96 25.58 97.62 4185.16 409.09 4665.16 CF PROVIDED. 54 2.18 0.76 69.84 3.02 25.25 98.12 4087.54 409.00 53 2.21 0.77 70.58 3.09 24.93 98.60 3989.42 408.92 52 2.23 0.79 71.28 3.15 24.63 99.06 3890.82 408.83 51 2.25 0.80 71.96 3.21 24.33 99.50 3791.76 408.75 50 2.27 0.82 72.62 3.28 24.04 99.94 3692.26 408.67 49 2.29 0.84 73.25 3.36 23.76 100.37 3592.32 408.58 48 2.31 0.85 73.85 3.38 23.51 100.74 3491.95 408.50 47 2.33 0.86 74.43 3.43 23.25 101.12 3391.21 408.42 46 2.34 0.87 74.99 3.49 23.01 101.48 3290.09 408.33 45 2.36 0.89 75.52 3.54 22.78 101.83 3188.61 408.26 44 2.38 0.90 76.03 3.59 22.55 102.17 3086.77 408.17 43 2.39 0.91 76.51 3.64 22.34 102.49 2984.60 408.08 42 2.41 0.92 76.97 3.69 22.13 102.80 2882.11 408.00 41 2.42 0.93 77.42 3.74 21.94 103.09 2779.31 407.92 40 2,43 0.95 77.84 3.78 21.75 103.37 2676.22 407.83 39 2.44 0.96 78.23 3.83 21.58 103.64 2572.85 407.75 38 2.46 0.97 78.61 3.87 21.41 103.89 2469.21 407.67 37 2.47 0.98 78.97 3.91 21.25 104.13 2365.32 407.58 36 2.48 0.99 79.31 3.95 21.10 104.35 2261.19 407.50 35 2.49 1.00 79.62 3.99 20.95 104.57 2156.84 407.42 34 2.50 1.01 79.93 4.03 20.82 104.77 2052.27 407.33 33 2.51 1.02 80.21 4.06 20.69 104.96 1947.50 407.25 32 2.51 1.02 80.47 4.10 20.57 105.14 1842.54 407.17 31 2.53 1.03 80.86 4.13 20.40 105.40 1737.40 407.08 30 0.00 0.00 0.00 0.00 54.40 54.40 1632.00 407.00 29 0.00 0.00 0.00 0.00 54.40 54.40 1577.60 406.92 28 0.00 0.00 0.00 0.00 54.40 54.40 1523.20 406.83 27 0.00 0.00 0.00 0.00 54.40 54.40 1468.80 406.75 26 0.00 0.00 0.00 0.00 54.40 54.40 1414.40 406.67 25 0.00 0.00 0.00 0.00 54.40 54.40 1360.00 406.58 24 0.00 0.00 0.00 0.00 54.40 54.40 1305.60 406.50 23 0.00 0,00 0.00 0.00 54.40 54.40 1251,20 406.42 22 0.00 0.00 0.00 0.00 54.40 54.40 1196,80 406.33 21 0.00 0.00 0.00 0.00 54.40 54.40 1142.40 406.25 20 0.00 0.00 0.00 0.00 54.40 54.40 1088.00 406.17 19 0.00 0.00 0.00 0.00 54.40 54.40 1033.60 406.08 18 0.00 0.00 0.00 0.00 54.40 54.40 979.20 406.00 17 0.00 0.00 0.00 0.00 54.40 54.40 924.80 405.92 16 0.00 0.00 0.00 0.00 54.40 54.40 870.40 405.83 15 0.00 0.00 0.00 0.00 54.40 54.40 816.00 405.75 14 0.00 0.00 0.00 0.00 54.40 54.40 761.60 405.67 13 0.00 0.00 0.00 0.00 54.40 54.40 707.20 405.58 12 0.00 0.00 0.00 0.00 54.40 54.40 652.80 405.50 11 0.00 0.00 0.00 0.00 54.40 54.40 598.40 405.42 10 0.00 0.00 0.00 0.00 54.40 54.40 544.00 405.33 9 0.00 0.00 0.00 0.00 54.40 54.40 489.60 405.25 8 0.00 0.00 0.00 0.00 54.40 54.40 435.20 405.17 7 0,00 0.00 0.00 0.00 54.40 54.40 380.80 405.08 6 0.00 0.00 0.00 0.00 54.40 54.40 326.40 405.00 5 0.00 0.00 0.00 0.00 54.40 54.40 272.00 404.92 4 0.00 0.00 0.00 0.00 54.40 54.40 217.60 404.83 3 0.00 0.00 0.00 0.00 54.40 54.40 163.20 404.75 2 0.00 0.00 0.00 0.00 54.40 54.40 108.80 404.67 1 0.00 0.00 0.00 0.00 54.40 54.40 54.40 404.58 18" HDPE STORM BMP D: ADS BAYFILTER W. STORMTECH CHAMBERS _\ TREATED AREA: 0.78 AC UNTREATED AREA + 2.61 AC AREA FROM BMPS A, B, & C 8CO PRECAST CONC. VAULT W. BAYFILTERS I J n J5 90°I BEf A6 WEIR B IR A TOP=410.0 TQP=409. B1 . - I` I 18' HDPE TOR 7 % 4 x4' PR CAST C NC JUNCTIO BOX I STORAGE R W INV=407.0 ) I I ) ISOLATO ROW INV=40 .00 I I I I 80 LF 6" / $REDUCE 40 ) PERF. PVC UNDERDRAIN �BEDDI G @ 81' 20'. INV. 405.5 I / BOTT M=404. 0 I TOP= I 13.00 /I ) I I _ I OUTLET C -- - I INV=409. 3 1. C1 4' MH-1 O C9� Q� c �O C2 6h� n I V BMF-' UL I AIL: AUK BAYS IL I LK VV. �) I UKM I LUH SCALE: 1 "=20' PROJECT INFORMATION ENGINEERED JIM CLARK PRODUCT 240463-0124 MANAGER: JAMES.CLARK@ADS-PIPE.COM MIKE GREEN ADS SALES REP: 304-240-0082 MIKE. GREEN@ADS-PI PE.COM PROJECT NO: S150496 MC-4500 STORMTECH CHAMBER SPECIFICATIONS SHeASS/ST4 Q D a9EDrtiilOch- FOR STORMTECH ���� INSTRUCTIONS, ISDOWNLOAD THE a R INSTALLATION APP ADVANCED DRAINAGE SYSTEMS, INC. ECOVILLAGE CHARLOTTESVILLE, VA IMPORTANT - NOTES FOR THE BIDDING AND INSTALLATION OF MC-4500 CHAMBER SYSTEM 1. CHAMBERS SHALL BE STORMTECH MC-4500. 1. STORMTECH MC-4500 CHAMBERS SHALL NOT BE INSTALLED UNTIL THE MANUFACTURER'S REPRESENTATIVE HAS COMPLETED A PRE -CONSTRUCTION MEETING WITH THE INSTALLERS. 2. CHAMBERS SHALL BE ARCH -SHAPED AND SHALL BE MANUFACTURED FROM VIRGIN IMPACT -MODIFIED POLYPROPYLENE 2. STORMTECH MC4500 CHAMBERS SHALL BE INSTALLED IN ACCORDANCE WITH THE "STORMTECH MC-3500IMC-4500 CONSTRUCTION GUIDE". COPOLYMERS. 3. CHAMBERS ARE NOT TO BE BACKFILLED WITH A DOZER OR EXCAVATOR SITUATED OVER THE CHAMBERS. 3. CHAMBERS SHALL MEET THE REQUIREMENTS OF ASTM F2418-16a, "STANDARD SPECIFICATION FOR POLYPROPYLENE (PP) STORMTECH RECOMMENDS 3 BACKFILL METHODS: CORRUGATED WALL STORMWATER COLLECTION CHAMBERS" CHAMBER CLASSIFICATION 60x101. STONESHOOTER LOCATED OFF THE CHAMBER BED. . BACKFILL AS ROWS ARE BUILT USING AN EXCAVATOR ON THE FOUNDATION STONE OR SUBGRADE. 4. CHAMBER ROWS SHALL PROVIDE CONTINUOUS UNOBSTRUCTED INTERNAL SPACE WITH NO INTERNAL SUPPORTS THAT WOULD BA KFILL FROM TIDE THE EXCAVATION IN A L N BOOM HOE R EXCAVATOR. C O OU SUSING LONG 00 O O IMPEDE FLOW OR LIMIT ACCESS FOR INSPECTION. 4. THE FOUNDATION STONE SHALL BE LEVELED AND COMPACTED PRIOR TO PLACING CHAMBERS. 5. THE STRUCTURAL DESIGN OF THE CHAMBERS, THE STRUCTURAL BACKFILL, AND THE INSTALLATION REQUIREMENTS SHALL ENSURE THAT THE LOAD FACTORS SPECIFIED IN THE AASHTO LRFD BRIDGE DESIGN SPECIFICATIONS, SECTION 12.12, ARE MET FOR: 1) 5. JOINTS BETWEEN CHAMBERS SHALL BE PROPERLY SEATED PRIOR TO PLACING STONE. LONG -DURATION DEAD LOADS AND 2) SHORT -DURATION LIVE LOADS, BASED ON THE AASHTO DESIGN TRUCK WITH CONSIDERATION FOR IMPACT AND MULTIPLE VEHICLE PRESENCES. 6. MAINTAIN MINIMUM 9" (230 Tim) SPACING BETWEEN THE CHAMBER ROWS. 6. CHAMBERS SHALL BE DESIGNED, TESTED AND ALLOWABLE LOAD CONFIGURATIONS DETERMINED IN ACCORDANCE WITH ASTM F2787, 7• INLET AND OUTLET MANIFOLDS MUST BE INSERTED A MINIMUM OF 12" (300 ni INTO CHAMBER END CAPS. "STANDARD PRACTICE FOR STRUCTURAL DESIGN OF THERMOPLASTIC CORRUGATED WALL STORMWATER COLLECTION CHAMBERS". 8. EMBEDMENT STONE SURROUNDING CHAMBERS MUST BE A CLEAN, CRUSHED, ANGULAR STONE MEETING THE AASHTO M43 DESIGNATION OF #3 LOAD CONFIGURATIONS SHALL INCLUDE: 1) INSTANTANEOUS (<1 MIN) AASHTO DESIGN TRUCK LIVE LOAD ON MINIMUM COVER 2) OR #4. MAXIMUM PERMANENT (75-YR) COVER LOAD AND 3) ALLOWABLE COVER WITH PARKED (1-WEEK) AASHTO DESIGN TRUCK. 9. STONE SHALL BE BROUGHT UP EVENLY AROUND CHAMBERS SO AS NOT TO DISTORT THE CHAMBER SHAPE. STONE DEPTHS SHOULD NEVER 7. REQUIREMENTS FOR HANDLING AND INSTALLATION: DIFFER BY MORE THAN 12" (300 Tim) BETWEEN ADJACENT CHAMBER ROWS. • TO MAINTAIN THE WIDTH OF CHAMBERS DURING SHIPPING AND HANDLING, CHAMBERS SHALL HAVE INTEGRAL, INTERLOCKING STACKING LUGS. 10. STONE MUST BE PLACED ON THE TOP CENTER OF THE CHAMBER TO ANCHOR THE CHAMBERS IN PLACE AND PRESERVE ROW SPACING. • TO ENSURE A SECURE JOINT DURING INSTALLATION AND BACKFILL, THE HEIGHT OF THE CHAMBER JOINT SHALL NOT BE LESS THAN 3". 11. THE CONTRACTOR MUST REPORT ANY DISCREPANCIES WITH CHAMBER FOUNDATION MATERIAL BEARING CAPACITIES TO THE SITE DESIGN • TO ENSURE THE INTEGRITY OF THE ARCH SHAPE DURING INSTALLATION, a) THE ARCH STIFFNESS CONSTANT AS DEFINED IN ENGINEER. SECTION 6.2.8 OF ASTM F2418 SHALL BE GREATER THAN OR EQUAL TO 500 LBS/IN/IN. AND b) TO RESIST CHAMBER DEFORMATION DURING INSTALLATION AT ELEVATED TEMPERATURES (ABOVE 73° F / 23° C), CHAMBERS SHALL BE PRODUCED FROM 12. ADS RECOMMENDS THE USE OF "FLEXSTORM CATCH IT" INSERTS DURING CONSTRUCTION FOR ALL INLETS TO PROTECT THE SUBSURFACE REFLECTIVE GOLD OR YELLOW COLORS. STORMWATER MANAGEMENT SYSTEM FROM CONSTRUCTION SITE RUNOFF. 8. ONLY CHAMBERS THAT ARE APPROVED BY THE SITE DESIGN ENGINEER WILL BE ALLOWED. UPON REQUEST BY THE SITE DESIGN NOTES FOR CONSTRUCTION EQUIPMENT ENGINEER OR OWNER, THE CHAMBER MANUFACTURER SHALL SUBMIT A STRUCTURAL EVALUATION FOR APPROVAL BEFORE DELIVERING CHAMBERS TO THE PROJECT SITE AS FOLLOWS: 1. STORMTECH MC-4500 CHAMBERS SHALL BE INSTALLED IN ACCORDANCE WITH THE "STORMTECH MC-3500/MC-4500 CONSTRUCTION GUIDE". • THE STRUCTURAL EVALUATION SHALL BE SEALED BY A REGISTERED PROFESSIONAL ENGINEER. • THE STRUCTURAL EVALUATION SHALL DEMONSTRATE THAT THE SAFETY FACTORS ARE GREATER THAN OR EQUAL TO 1.95 FOR 2. THE USE OF EQUIPMENT OVER MC-4500 CHAMBERS IS LIMITED: DEAD LOAD AND 1.75 FOR LIVE LOAD, THE MINIMUM REQUIRED BY ASTM F2787 AND BY SECTIONS 3 AND 12.12 OF THE AASHTO • NO EQUIPMENT IS ALLOWED ON BARE CHAMBERS. LRFD BRIDGE DESIGN SPECIFICATIONS FOR THERMOPLASTIC PIPE. • NO RUBBER TIRED LOADER, DUMP TRUCK, OR EXCAVATORS ARE ALLOWED UNTIL PROPER FILL DEPTHS ARE REACHED IN ACCORDANCE • THE TEST DERIVED CREEP MODULUS AS SPECIFIED IN ASTM F2418 SHALL BE USED FOR PERMANENT DEAD LOAD DESIGN WITH THE "STORMTECH MC-3500/MC-4500 CONSTRUCTION GUIDE". EXCEPT THAT IT SHALL BE THE 75-YEAR MODULUS USED FOR DESIGN. • WEIGHT LIMITS FOR CONSTRUCTION EQUIPMENT CAN BE FOUND IN THE "STORMTECH MC-3500/MC-4500 CONSTRUCTION GUIDE". 9. CHAMBERS AND END CAPS SHALL BE PRODUCED AT AN ISO 9001 CERTIFIED MANUFACTURING FACILITY. 3. FULL 36"(900 mm) OF STABILIZED COVER MATERIALS OVER THE CHAMBERS IS REQUIRED FOR DUMP TRUCK TRAVEL OR DUMPING. USE OF A DOZER TO PUSH EMBEDMENT STONE BETWEEN THE ROWS OF CHAMBERS MAY CAUSE DAMAGE TO CHAMBERS AND IS NOT AN ACCEPTABLE BACKFILL METHOD. ANY CHAMBERS DAMAGED BY USING THE "DUMP AND PUSH" METHOD ARE NOT COVERED UNDER THE STORMTECH STANDARD WARRANTY. CONTACT STORMTECH AT 1-888-892-2694 WITH ANY QUESTIONS ON INSTALLATION REQUIREMENTS OR WEIGHT LIMITS FOR CONSTRUCTION EQUIPMENT. ®2-AUB.IN BAYSAVER BAYFILTER SPECIFICATIONS PRODUCTS A. INTERNAL COMPONENTS: ALL COMPONENTS INCLUDING CONCRETE STRUCTURE(S), PVC MANIFOLD PIPING AND FILTER CARTRIDGES, SHALL BE PROVIDED BY BAYSAVER TECHNOLOGIES LLC, '1030 DEER HOLLOW DRIVE, MOUNT AIRY, MD (800.229.7283). B. PVC MANIFOLD PIPING: ALL INTERNAL PVC PIPE AND FITTINGS SHALL MEET ASTM D1785. MANIFOLD PIPING SHALL BE PROVIDED TO THE CONTRACTOR PARTIALLY PRE-CUT AND PRE -ASSEMBLED, C. FILTER CARTRIDGES: EXTERNAL SHELL OF THE FILTER CARTRIDGES SHALL BE SUBSTANTIALLY CONSTRUCTED OF POLYETHYLENE OR EQUIVALENT MATERIAL ACCEPTABLE TO THE MANUFACTURER. FILTRATION MEDIA SHALL BE ARRANGED IN A SPIRAL LAYERED FASHION TO MAXIMIZE AVAILABLE FILTRATION AREA. AN ORIFICE PLATE SHALL BE SUPPLIED WITH EACH CARTRIDGE TO RESTRICT THE FLOW RATE TO A MAXIMUM OF 45 GPM. D. FILTER MEDIA: FILTER MEDIA SHALL BE BY BAYSAVER TECHNOLOGIES LLC AND SHALL CONSIST OF THE FOLLOWING MIX: A BLEND OF ZEOLITE, PERLITE AND ACTIVATED ALUMINA. E. PRECAST CONCRETE VAULT: CONCRETE STRUCTURES SMALL BE PROVIDED ACCORDING TO ASTM C. THE MATERIALS AND STRUCTURAL DESIGN OF THE DEVICES SHALL BE PER ASTM C478, C857 AND C858. PRECAST CONCRETE SHALL BE PROVIDED BY BAYSAVER TECHNOLOGIES LLC. PERFORMANCE A. THE STORMWATER FILTER SYSTEM SHALL BEAN OFFLINE: DESIGN CAPABLE OF TREATING 100% OF THE REQUIRED TREATMENT FLOW AT FULL SEDIMENT LOAD CONDITIONS. B. THE STORMWATER FILTER SYSTEM'S CARTRIDGES SHALL HAVE NO MOVING PARTS. C. THE STORMWATER TREATMENT UNIT SHALL BE DESIGNED TO REMOVE AT LEAST 85% OF SUSPENDED SOLIDS, 65% OF TOTAL PHOSPHORUS, 65% OF TURBIDITY, 40% OF TOTAL COPPER, AND 40% OF TOTAL ZINC BASED ON FIELD DATA COLLECTED IN COMPLIANCE WITH THE TECHNOLOGY ACCEPTANCE RECIPROCITY PARTNERSHIP TIER II TEST PROTOCOL. D. THE STORMWATER FILTRATION SYSTEM SHALL REDUCE 114COMING TURBIDITY (MEASURED AS NTUs) BY 50 % OR MORE AND SHALL NOT HAVE ANY COMPONENTS THAT LEACH NITRATES OR PHOSPHATES. E. THE STORMWATER FILTRATION CARTRIDGE SHALL BE EQUIPPED WITH A HYDRODYNAMIC BACKWASH MECHANISM TO EXTEND THE FILTER'S LIFE AND OPTIMIZE ITS PERFORMANCE. F. THE STORMWATER FILTRATION SYSTEM SHALL BE DESIGNED TO REMOVE A MINIMUM OF 65% OF THE INCOMING TOTAL PHOSPHORUS TP LOAD. G. THE STORMWATER FILTRATION SYSTEM'S CARTRIDGES SHALL HAVE A TREATED SEDIMENT CAPACITY FOR 80 % TSS REMOVAL BETWEEN 150-350 LBS. BAYFILTER MAINTENANCE THE BAYFILTER SYSTEM REQUIRES PERIODIC MAINTENANCE TO CONTINUE OPERATING AT ITS PEAK EFFICIENCY DESIGN. THE MAINTENANCE PROCESS COMPRISES THE REMOVAL AND REPLACEMENT OF EACH BAYFILTER CARTRIDGE AND THE CLEANING OF THE VAULT OR MANHOLE WITH A VACUUM TRUCK. FOR BEST RESULTS, BAYFILTER MAINTENANCE SHOULD BE PERFORMED BY A CERTIFIED MAINTENANCE CONTRACTOR. A QUICK CALL TO AN ADS ENGINEER OR CUSTOMER SERVICE REPRESENTATIVE WILL PROVIDE YOU WITH A LIST OF RELIABLE CONTRACTORS IN YOUR AREA WHEN BAYFILTER IS INITIALLY INSTALLED, WE RECOMMEND THAT AN INSPECTION BE PERFORMED ON THE SYSTEM IN THE FIRST SIX (6) MONTHS. AFTER THAT THE INSPECTION CYCLE TYPICALLY FALLS INTO A BIANNUAL PATTERN GIVEN NORMAL STORM OCCURRENCE AND ACTUAL SOLIDS LOADS. WHEN BAYFILTER EXHIBITS FLOWS BELOW DESIGN LEVELS, THE SYSTEM SHOULD BE INSPECTED AND MAINTAINED AS SOON AS PRACTICAL. REPLACING A BAYFILTER CARTRIDGE SHOULD BE CONSIDERED AT OR ABOVE THE LEVEL OF THE MANIFOLD. MAINTENANCE PROCEDURES 1. REMOVE THE MANHOLE COVERS AND OPEN ALL ACCESS HATCHES. 2. BEFORE ENTERING THE SYSTEM MAKE SURE THE AIR IS SAFE PER OSHA STANDARDS OR USE A BREATHING APPARATUS. USE LOW 02, HIGH CO, OR OTHER APPLICABLE WARNING DEVICES PER REGULATORY REQUIREMENTS. 3. USING A VACUUM TRUCK REMOVE ANY LIQUID AND SEDIMENTS THAT CAN BE REMOVED PRIOR TO ENTRY. 4. USING A SMALL LIFT OR THE BOOM OF THE VACUUM TRUCK, REMOVE THE USED CARTRIDGES BY LIFTING THEM OUT. 5. ANY CARTRIDGES THAT CANNOT BE READILY LIFTED CAN BE EASILY SLID ALONG THE FLOOR TO A LOCATION THEY CAN BE LIFTED VIA A BOOM LIFT. 6. WHEN ALL THE CARTRIDGES HAVE BEEN REMOVED, IT IS NOW PRACTICAL TO REMOVE THE BALANCE OF THE SOLIDS AND WATER. LOOSEN THE STAINLESS CLAMPS ON THE FERNCO COUPLINGS FOR THE MANIFOLD AND REMOVE THE DRAINPIPES AS WELL. CAREFULLY CAP THE MANIFOLD AND THE FERNCO'S AND RINSE THE FLOOR, WASHING AWAY THE BALANCE OF ANY REMAINING COLLECTED SOLIDS. 7. CLEAN THE MANIFOLD PIPES, INSPECT, AND REINSTALL. 8. INSTALL THE EXCHANGE CARTRIDGES AND CLOSE ALL COVERS. 9. THE USED CARTRIDGES MUST BE SENT BACK TO ADS FOR EXCHANGE/RECYCLING AND CREDIT ON UNDAMAGED UNITS. BAYFILTER INSTALLATION NOTES 1. CONTACT UTILITY LOCATOR TO MARK ANY NEARBY UNDERGROUND UTILITIES AND MAKE SURE IT IS SAFE TO EXCAVATE. 2. REFERENCE THE SITE PLAN AND STAKE OUT THE LOCATION OF THE BAYFILTER VAULT. 3. EXCAVATE THE HOLE PROVIDING ANY SHEETING AND SHORING NECESSARY TO COMPLY WITH ALL FEDERAL STATE AND LOCAL SAFETY REGULATIONS. 4. LEVEL THE SUB -GRADE TO THE PROPER ELEVATION. VERIFY THE ELEVATION AGAINST THE MANHOLE DIMENSIONS THE INVERT ELEVATIONS, AND THE SITE PLANS. ADJUST THE BASE AGGREGATE, IF NECESSARY. 5. HAVE THE SOIL BEARING CAPACITY VERIFIED BY A LICENSED/ENGINEER FOR THE REQUIRED LOAD BEARING CAPACITY. ON SOLID SUB -GRADE, SET THE FIRST SECTION OF THE BAYFILTER PRE -CAST VAULT. 6. CHECK THE LEVEL AND ELEVATION OF THE FIRST SECTION TO ENSURE IT IS CORRECT BEFORE ADDING ANY RISER SECTIONS. 7. IF ADDITIONAL SECTION(S) ARE REQUIRED, ADD A WATERTIGHT SEAL TO THE FIRST SECTION OF THE BAYFILTER VAULT. SET ADDITIONAL SECTION(S) OF THE VAULT, ADDING A WATERTIGHT SEAL TO EACH JOINT. 8. INSTALL THE PVC OUTLET MANIFOLD. 9. INSTALL THE PVC OUTLET PIPE IN BAYFILTER VAULT. 10. INSTALL THE INLET PIPE TO THE BAYFILTER VAULT. 11. AFTER THE SITE IS STABILIZED, REMOVE ANY ACCUMULATED SEDIMENT OR DEBRIS FROM THE VAULT AND INSTALL THE FLOW DISKS, DRAINDOWN MODULES (IF APPLICABLE), AND THE BAYFILTER CARTRIDGES. 12. PLACE FULL SET OF HOLD DOWN BARS AND BRACKETS INTO PLACE. PROPOSED LAYOUT 32 STORMTECH M CHAMBERS C-4500 C S 4 STORMTECH MC-4500 END CAPS 12 STONE ABOVE (in) 30 STONE BELOW in 40 %STONE VOID INSTALLED SYSTEM VOLUME (CF) ABOVE ELEVATION 405.50 7027 (PERIMETER STONE INCLUDED) 1632 SYSTEM AREA (f 2) 203 SYSTEM PERIMETER (tl) NOTES • MANIFOLD SIZE TO BE DETERMINED BY SITE DESIGN ENGINEER. SEE TECHNICAL NOTE 6.32 FOR MANIFOLD SIZING GUIDANCE. • DUE TO THE ADAPTATION OF THIS CHAMBER SYSTEM TO SPECIFIC SITE AND DESIGN CONSTRAINTS IT MAY BE NECESSARY TO CUT AND COUPLE ADDITIONAL PIPE TO STANDARD MANIFOLD � COMPONENTS IN THE FIELD. • THE SITE DESIGN ENGINEER MUST REVIEW ELEVATIONS AND IF NECESSARY ADJUST GRADING TO ENSURE THE CHAMBER COVER REQUIREMENTS ARE MET. THIS CHAMBER SYSTEM WAS DESIGNED WITHOUT SITE -SPECIFIC INFORMATION ON SOIL CONDITIONS OR BEARING CAPACITY. THE SITE DESIGN ENGINEER IS RESPONSIBLE FOR DETERMINING THE SUITABILITY OF THE SOIL AND PROVIDING THE BEARING CAPACITY OF THE INSITU SOILS. THE BASE STONE DEPTH MAY BE INCREASED OR DECREASED ONCE THIS INFORMATION IS PROVIDED. • THE SITE DESIGN ENGINEER MUST REVIEW THE PROXIMITY OF THE CHAMBERS TO THE RETAINING WALL AND CONSIDER EFFECTS OF POSSIBLE SATURATED SOILS ON THE RETAINING WALL'S INTEGRITY. W (� J O j LLI J > W O J R Z 3 QQ C O I o X 3 F - o=_ w o w y U o �, PROPOSED ELEVATIONS w X a g 419.00 MAXIMUM ALLOWABLE GRADE (TOP OF PAVEMENT/UNPAVED) I �;3 414.50 MINIMUM ALLOWABLE GRADE (UNPAVED WITH TRAFFIC) = U 46 0 414.00 MINIMUM ALLOWABLE GRADE (UNPAVED NO TRAFFIC) E� '-' w 414.00 MINIMUM ALLOWABLE GRADE (BASE OF FLEXIBLE PAVEMENT) 414.00 MINIMUM ALLOWABLE GRADE (TOP OF RIGID PAVEMENT) 1 p 413.00 TOP OF STONE o IL 412.00 TOP OF MC4500 CHAMBER 409.73 15" TOP MANIFOLD INVERT 407.19 24" ISOLATOR ROW CONNECTION INVERT 1. 407.16 18" BOTTOM MANIFOLD INVERT 407.00 BOTTOM OF MC-4500 CHAMBER g 405.50 UNDERDRAIN INVERT ii 404.60 BOTTOM OF STONE 8 w o X BAYFILTER WQU AS SPECIFIED (SEE SHEET 4 FOR DETAILS) 15" X 15" ADS N-12 TOP MANIFOLD INVERT 32.72' ABOVE CHAMBER BASE PLACE MINIMUM 17.5' OF ADS GEOSYNTHETICS 315WTM WOVEN GEOTEXTILE OVER BEDDING STONE AND UNDERNEATH CHAMBER FEET \ 1. @ u (SEE NOTES) FOR SCOUR PROTECTION AT ALL CHAMBER INLET ROWS I 3 I - g 5 6" ADS N-12 DUAL WALL PERFORATED HDPE UNDERDRAIN _> (SIZE TBD BY ENGINEER) c o w - - 18" CORED END CAP, PART# MC4500REPE18TC OR i� MG450OREPE18TW _ ,"-, TYP OF ALL MC-4500 18" TOP CONNECTIONS G . w ;- 18" X 18" ADS N-12 BOTTOM MANIFOLD d ° M INVERT 1.97" ABOVE CHAMBER BASE ` i` I I (SEE NOTES) 1 .'§ `� I o O N /i 8 - o 88 w B c e N L I- o I /// M I �/�/ I / I / / / // /�) Y/ `lik o - - - o o 7 I M N STRUCTURE PER PLAN INSPECTION PORT 4 PROPOSED STRUCTURE WNJEIR e ¢ x i W/ELEVATED BYPASS MANIFOLD MAXIMUM INLET FLOW 5.5 CFS w 0 8 MAXIMUM INLET FLOW 3.5 CFS ISOLATOR ROW (DESIGN BY ENGINEER /PROVIDED BY OTHERS) � Of (DESIGN BY ENGINEER / PROVIDED BY OTHERS) (SEE DETAIL) WEIR TOP=410.00 F- Of °o O J J w 24- CORED END CAP, PART# MG450OREPE24BC OR MC450OREPE24BW � = o TYP OF ALL MC-4500 24" BOTTOM CONNECTIONS AND ISOLATOR ROWS 69.52' 3 j 81.52' e I �� o SHEET 3 7 OF 24" SOLID LID CONTROL WEIR (DESIGN BY ENGINEER) WEIR TOP=409.50 18" INLET PIPE 11.1T [134.04"] 10.50' 10.02' [126.04'] [120.249 4.33' 51.96 2.67' 132.041 18" OUTLET PIPE 6" INLET PIPE -// 6" INLET ORIFICE - TROLLEY SECTION A -A SCALE: 1/4" = 1' 36" SOLID LID 412.85 WQv (TBD BY ENGINEER) 1- YR WSE = 406.49 > 18" OUTLET PIPE STEPS (TYP) 10-YR WSE=409.73 530 BAYFILTER ) 25-YR WSE=411.48 CARTRIDGE (TYP _ _ __ _.-....._.. 407.16 405.50 4" FLEXIBLE COUPLER (TYP) 4" PVC OUTLET MANIFOLD 4" PVC TEE W/FLOW DISK (TYP EACH CARTRIDGE LOCATION) --- 402.83 [PROPOSED] VERTICAL DRAIN DOWN MODULE (TYP) 4" PVC OUTLET MANIFOLD 4" PVC TEE W/ FLOWDISK (TYP) 4" FLEXIBLE COUPLER > THE OUTLET INVERT NEEDS TO BE LOWERED FOR THE BAYFILTER TO FUNCTION. THE DESIGN ENGINEER MUST CHECK THIS PROPOSED INVERT MODIFICATION TO ENSURE THE PROJECT'S DESIGN REQUIREMENTS ARE MET. 530 BAYFILTER BAYFILTER Ojfo BF-1 C 6.8.3 OUTLET PIPE AIR RELEASE VALVE WATER QUALITY VOLUME 6,924 CF DRAINAGE AREA POLYMER SEAL CARTRIDGE DESIGN VOLUME 2500 CF # BAYFILTER CARTRIDGES I 3 INLET DRAINAGE I OUTLET ICAPTURED SEDIMENT CAPACITY` 1 786 LBS MATERIAL -I PATHWAY THE BAYFILTER STORMWATER MANAGEMENT SYSTEM IS A MEDIASPIRAL FLOW CONTROL STORMWATER FILTRATION DEVICE DESIGNED TO REMOVE FINE ORIFICE SEDIMENTS HEAVY METALS AND PHOSPORUS. THE BAYFILTER S SYSTEM RELIES ON A SPIRAL WOUND MEDIA FILTER CARTRIDGE OUTLET DRAINAGE - WITH APPROXIMATELY 90 SQUARE FEET OF FILTRATION AREA. THE MATERIAL _ INLET PLATE FILTER CARTRIDGES ARE HOUSED IN A CONCRETE STRUCTURE /11 THAT EVENLY DISTRIBUTES THE FLOW BETWEEN CARTRIDGES. THE SYSTEM IS INLINE WITH AN INTERNAL BYPASS THAT ROUTES FILTER LEG HIGH INTENSITY STORMS AROUND THE CARTRIDGES. THE FILTER CARTRIDGES REMOVE POLLUTANTS FROM RUNOFF BY FILTRATION OUTLET (INTERCEPTION/ATTACHMENT) AND ADSORPTION. COLLECTION 'SEDIMENT CAPTURE PER CURRENT NJDEP APPROVAL MANIFOLD STEPS TYP 36" SOLID LID CONTROL WEIR Q (DESIGN BY ENGINEER) WEIR TOP=409.50 24" SOLID LID 18" INLET PIPE a w fV 6" INLET PIPE 6" INLET ORIFICE c m ///-- � (n� 530 BAYFILTER CARTRIDGE (TYP) 4" PVC PLUG (TYP) K_� 6.00' PLAN VIEW SCALE: 114" = 1' A4CCEPTABLE FILL MATERIALS: STORMTECH MC-4500 CHAMBER SYSTEMS HOLD DOWN BAR (TYP) ) AASHTO MATERIAL MATERIAL LOCATION DESCRIPTION COMPACTION / DENSITY REQUIREMENT CLASSIFICATIONS FINAL FILL: FILL MATERIAL FOR LAYER'D' STARTS FROM THE PREPARE PER SITE DESIGN ENGINEER'S PLANS. PAVED D TOP OF THE'C' LAYER TO THE BOTTOM OF FLEXIBLE ANY SOIL/ROCK MATERIALS, NATIVE SOILS, OR PER ENGINEER'S PLANS. N/A INSTALLATIONS MAY HAVE STRINGENT MATERIAL AND PAVEMENT OR UNPAVED FINISHED GRADE ABOVE. NOTE THAT CHECK PLANS FOR PAVEMENT SUBGRADE REQUIREMENTS. PREPARATION REQUIREMENTS. PAVEMENT SUBBASE MAY BE PART OF THE'D' LAYER AASHTO M145' INITIAL FILL: FILL MATERIAL FOR LAYER'C' SITARTS FROM THE GRANULAR WELL -GRADED SOIL/AGGREGATE MIXTURES, <35% FINES OR A-1, A-2-4, A-3 BEGIN COMPACTIONS AFTER 24" (600 mm) OF MATERIAL OVER TOP OF THE EMBEDMENT STONE ('B' LAYER) TO 24" (600 mm) PROCESSED AGGREGATE. THE CHAMBERS IS REACHED. COMPACT ADDITIONAL LAYERS IN C ABOVE THE TOP OF THE CHAMBER. NOTE THAT PAVEMENT OR 12" (300 mm) MAX LIFTS TO A MIN. 95% PROCTOR DENSITY FOR SUBBASE MAY BE A PART OF THE'C' LAYER. MOST PAVEMENT SUBBASE MATERIALS CAN BE USED IN LIEU OF THIS WELL GRADED MATERIAL AND 95% RELATIVE DENSITY FOR LAYER. AASHTO M43' PROCESSED AGGREGATE MATERIALS. 3, 357, 4, 467, 5, 56, 57, 6, 67, 68, 7, 78, 8, 89, 9, 10 EMBEDMENT STONE: FILL SURROUNDING THE CHAMBERS AASHTO M43' AAS B FROM THE FOUNDATION STONE (W LAYER) TO THE'C' LAYER CLEAN, CRUSHED, ANGULAR STONE 3,4 NO COMPACTION REQUIRED. ABOVE. A FOUNDATION STONE: FILL BELOW CHAMBERS FROM THE CLEAN, CRUSHED, ANGULAR STONE AASHTO M43' PLATE COMPACT OR ROLL TO ACHIEVE A FLAT SURFACE 2,3 SUBGRADE UP TO THE FOOT (BOTTOM) OF THE CHAMBER. 3,4 PLEASE NOTE: 1. THE LISTED AASHTO DESIGNATIONS ARE FOR GRADATIONS ONLY. THE STONE MUST ALSO BE CLEAN CRUSHED ANGULAR. FOR EXAMPLE A SPECIFICATION FOR #4 STONE WOULD STATE: "CLEAN CRUSHED ANGULAR NO. 4 AASHTO M43 STONE". 2. STORMTECH COMPACTION REQUIREMENTS ARE MET FORA' LOCATION MATERIALS WHEN PLACED AND COMPACTED IN 9" (230 Tim) (MAX) LIFTS USING TWO FULL COVERAGES WITH A VIBRATORY COMPACTOR. 3. WHERE INFILTRATION SURFACES MAY BE COMPROMISED BY COMPACTION, FOR STANDARD DESIGN LOAD CONDITIONS, A FLAT SURFACE MAY BE ACHIEVED BY RAKING OR DRAGGING WITHOUT COMPACTION EQUIPMENT. FOR SPECIAL LOAD DESIGNS, CONTACT STORMTECH FOR COMPACTION REQUIREMENTS. 4. ONCE LAYER'C' IS PLACED, ANY SOIL/MATERIAL CAN BE PLACED IN LAYER'D' UP TO THE FINISHED GRADE. MOST PAVEMENT SUBBASE SOILS CAN BE USED TO REPLACE THE MATERIAL REQUIREMENTS OF LAYER 'C' OR 'D' AT THE SITE DESIGN ENGINEER'S DISCRETION. ADS GEOSYNTHETICS 601T NON -WOVEN GEOTEXTILE ALL AROUND CLEAN, CRUSHED, ANGULAR STONE IN A & B LAYERS PAVEMENT LAYER (DESIGNED BY SITE DESIGN ENGINEER) D 'TO BOTTOM OF FLEXIBLE PAVEMENT. FOR UNPAVED INBTALLATIONI WHERE RUTTING FROM VEHICLES MAY OCCUR zo• PERIMETER STONE !� INCREASE T030'IT58 mm). 24" (2,1 m) (SEE NOTE 4) C I (600 mm) MIN" MAX 12" (300 mm) MIN EXCAVATION WALL 60" (CAN BE SLOPED OR VERTICAL) (1524 mm) j I - � L A 1 DEPTH OF STONE TO BE DETERMINED BY SITE DESIGN ENGINEER 9" (230 Tim) MIN 12" (300 mm) MIN --� 9.1 100" 2540 mm 12" 300 mm MIN MC-0500 Y 230 mm MIN END CAP SUBGRADE N SOILS ( ) @ Al k (SEE NOTE 3) DEPTH OF STONE BEDDING=12" NOTES: 1. CHAMBERS SHALL MEET THE REQUIREMENTS OF ASTM F2418-16a, "STANDARD SPECIFICATION FOR POLYPROPYLENE (PP) CORRUGATED WALL STORMWATER COLLECTION CHAMBERS" CHAMBER CLASSIFICATION 60x101 2. MC4500 CHAMBERS SHALL BE DESIGNED IN ACCORDANCE WITH ASTM F2787 "STANDARD PRACTICE FOR STRUCTURAL DESIGN OF THERMOPLASTIC CORRUGATED WALL STORMWATER COLLECTION CHAMBERS". 3. THE SITE DESIGN ENGINEER IS RESPONSIBLE FOR ASSESSING THE BEARING RESISTANCE (ALLOWABLE BEARING CAPACITY) OF THE SUBGRADE SOILS AND THE DEPTH OF FOUNDATION STONE WITH CONSIDERATION FOR THE RANGE OF EXPECTED SOIL MOISTURE CONDITIONS. 4. PERIMETER STONE MUST BE EXTENDED HORIZONTALLY TO THE EXCAVATION WALL FOR BOTH VERTICAL AND SLOPED EXCAVATION WALLS. 5. REQUIREMENTS FOR HANDLING AND INSTALLATION: • TO MAINTAIN THE WIDTH OF CHAMBERS DURING SHIPPING AND HANDLING CHAMBERS SHALL HAVE INTEGRAL INTERLOCKING STACKING LUGS. TO ENSURE A SECURE JOINT DURING INSTALLATION AND BACKFILL, THE HEIGHT OF THE CHAMBER JOINT SHALL NOT BE LESS THAN W. TO ENSURE THE INTEGRITY OF THE ARCH SHAPE DURING INSTALLATION, a) THE ARCH STIFFNESS CONSTANT AS DEFINED IN SECTION 6.2.8 OF ASTM F2418 SHALL BE GREATER THAN OR EQUAL TO 500 LBS/IN/IN. AND b) TO RESIST CHAMBER DEFORMATION DURING INSTALLATION AT ELEVATED TEMPERATURES (ABOVE 73° F / 23° C), CHAMBERS SHALL BE PRODUCED FROM REFLECTIVE GOLD OR YELLOW COLORS. COVER PIPE CONNECTION TO END CAP WITH ADS GEOSYNTHETICS 601T NON -WOVEN GEOTEXTILE STORMTECH HIGHLY RECOMMENDS FLEXSTORM PURE INSERTS IN ANY UPSTREAM STRUCTURES WITH OPEN GRATES `. ELEVATED BYPASS MANIFOLD CATCH BASIN OR MANHOLE SUMP DEPTH TBD BY SITE DESIGN ENGINEER (24' [600 mm] MIN RECOMMENDED) NO SUMP PROPOSED INSPECTION & MAINTENANCE STEP 1) INSPECT ISOLATOR ROW FOR SEDIMENT MC-4500 CHAMBER 24" (600 Tim) HDPE ACCESS PIPE REQUIRED // USE FACTORY PRE -CORED END CAP PART #: MC450OREPE24BC OR MC450OREPE24BW MC-4500 ISOLATOR ROW DETAIL NTS A. INSPECTION PORTS (IF PRESENT) A.1. REMOVE/OPEN LID ON NYLOPLAST INLINE DRAIN A.2. REMOVE AND CLEAN FLEXSTORM FILTER IF INSTALLED A.3. USING A FLASHLIGHT AND STADIA ROD, MEASURE DEPTH OF SEDIMENT AND RECORD ON MAINTENANCE LOG A.4. LOWER A CAMERA INTO ISOLATOR ROW FOR VISUAL INSPECTION OF SEDIMENT LEVELS (OPTIONAL) A.S. IF SEDIMENT IS AT, OR ABOVE, 3" (80 mm) PROCEED TO STEP 2. IF NOT, PROCEED TO STEP 3. B. ALL ISOLATOR ROWS B.1. REMOVE COVER FROM STRUCTURE AT UPSTREAM END OF ISOLATOR ROW B.2. USING A FLASHLIGHT, INSPECT DOWN THE ISOLATOR ROW THROUGH OUTLET PIPE E) MIRRORS ON POLES OR CAMERAS MAY BE USED TO AVOID A CONFINED SPACE ENTRY ii) FOLLOW OSHA REGULATIONS FOR CONFINED SPACE ENTRY IF ENTERING MANHOLE B.3. IF SEDIMENT IS AT, OR ABOVE, 3" (80 ni PROCEED TO STEP 2. IF NOT, PROCEED TO STEP 3. STEP 2) CLEAN OUT ISOLATOR ROW USING THE JETVAC PROCESS A. A FIXED CULVERT CLEANING NOZZLE WITH REAR FACING SPREAD OF 45" (1.1 m) OR MORE IS PREFERRED B. APPLY MULTIPLE PASSES OF JETVAC UNTIL BAC',KFLUSH WATER IS CLEAN C. VACUUM STRUCTURE SUMP AS REQUIRED STEP 3) REPLACE ALL COVERS, GRATES, FILTERS, AND LIDS; RECORD OBSERVATIONS AND ACTIONS. STEP 4) INSPECT AND CLEAN BASINS AND MANHOLES UPSTREAM OF THE STORMTECH SYSTEM. NOTES 1. INSPECT EVERY 6 MONTHS DURING THE FIRST YEAR OF OPERATION. ADJUST THE INSPECTION INTERVAL BASED ON PREVIOUS OBSERVATIONS OF SEDIMENT ACCUMULATION AND HIGH WATER ELEVATIONS. 2. CONDUCT JETTING AND VACTORING ANNUALLY OR WHEN INSPECTION SHOWS THAT MAINTENANCE IS NECESSARY. CONCRETE PAVEM CONCRETE SLAB 6" (150 mm) MIN THICKNE: STORMTECH CHAMBER J O > U - 0 W I, Z w Q J Q W 1. > C J W 0 L) s O p , m 9 U J o w = S co3 U 4i o U -, Ld ILL!� o a ❑ m J N 1_. m ,4, o Z¢= $ w0 0 O< W w V J_ I- g e T O z C) Q . c 3 J SHEET 4 of 7 J O � Q O U 6 o (D J �Q i?_ �S L) 1 U J _, o � W M S ul z U 4i o U -, w r o IL p u w E o'o � W � Ma ,� 2% E.. u� s g ag 0 0 uw wi Z L, N a : I w l" - '� � iE �' a � F Ga QR c 8 & `1. a - gO > tO o $�$ J. zF m� a v w _ •.', W O °o tY 0 r ow O- V J gi �_ '.w wy w m i11 ; 9 .� oN 3 b 1. SHEET 5 of 7 OPTIONAL INSPECTION PORT Q J I] O v - > MC-0500 END CAP W LLI 0 U J ?i U .1 4 j qa LU I J LU ° s 12STONE O O 9! m I TOP 413.00 U -I a3 o d W Q °o c 3 CHAMBER TOP 412.00 U ii o w11 n Inn on 1. a IIIIIIII IIIIIIIIII� E I YII CHAMBER INV=407.00 1 . STONE BOTTOM 404.50 iE TWO LAYERS OF ADS GEOSYNTHETICS 315WTM WOVEN 9 GEOTEXTILE BETWEEN FOUNDATION STONE AND CHAMBERS w 10.3' (3.1 m) MIN WIDE CONTINUOUS FABRIC WITHOUT SEAMS c 0 w N )NCRETE COLLAR NOT REQUIRED G 'D° w 128" Ft UNPAVED APPLICATIONS ; d_ o NYLOPLAST INSPECTION PORT , BODY (PART# 2708AG41PKIT) OR TRAFFIC RATED BOX W/SOLID � a o w 4" (100 mm) j F' LOCKING COVER SCHED 40 PVC 0 4" (100 Tim) SCHED 40 PVC 4" (100 m) SCHED m40 PVC 2 - 1. Q B ° 1 COUPLING $ i mo 4" (100 mm) °s J N 8„ T SCHED 40 PVC (200 mm) J m . o CORE 4.5" (114 mm) 0 Q = O i o HOLE IN CHAMBER (4.5" HOLE SAW REQ'D) W zo ii �Q O J w V J a = g ANY VALLEY I - Ili LOCATION NOTES: 1. INSPECTION PORTS MAYBE CONNECTED THROUGH ANY CHAMBER CONNECTION DETAIL is CORRUGATION VALLEY. NTS o 2. ALL SCHEDULE 40 FITTINGS TO BE SOLVENT CEMENTED (4" PVC NOT w PROVIDED BY ADS). 3 4" PVC INSPECTION PORT DETAIL NTS SHEET 6 OF 7 V 00 y w00 0 0 I O QI,iiii 0 Z W OZ N W W Z S,iii 1 It \_/ W I tF� E-, w a W a- 0 0 V) w� Z w I D 7 N O 0) ~ N 4 > siIii, I (n W J I J ��^ III I W '�, w < 0 WJ N 4 T I w �0 N O E 0 U c-) L Q) _> 0) = 0 U tT CD N - \ 0 (2) N CD N Of LZ i- Iftil""'i- , t!ii < �2 -0) Z L� o' 7�'._ii o Q U �V � � J Z � Q g � w N Z m J >w< Date 09 /23 /2019 Scale Sheet No. C15 OF15 File No. 16.009