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HomeMy WebLinkAboutWPO201500086 Plan - E&S 2015-11-24DEVELOPER: STONEHAUS DEVELOPMENT, LLC PROPOSED WITH PHASE II 100 10th ST. NE, SUITE 301 DIFFERENCE CHARLOTTESVILLE, VA 22902 0 434.974.7588 OWNER: TMP 06200 -00 -00 -00300 Other Green Space DB 3488, PG 552 0 BELVEDERE STATION LAND TRUST Preservation Area 2421 IVY ROAD Conservation Area CHARLOTTESVILLE, VA 22903 Other Green Space TMP 06200 -00 -00 -00500 Preservation Area DB 3488, PG 552 Park or Green Space BELVEDERE STATION LAND TRUST 4.54 2421 IVY ROAD � CHARLOTTESVILLE, VA 22903 DB /PG TMP 06100 -00 -00 -16000 DB 3488, PG 552 4 BELVEDERE STATION LAND TRUST 2421 IVY ROAD CHARLOTTESVILLE, VA 22903 ENGINEER: COLLINS ENGINEERING Location 200 GARRETT STREET, SUITE K (Acres) CHARLOTTESVILLE, VA 22902 6" CONTACT: SCOTT COLLINS, PE (Acres) 434.293.3719 TAX PARCEL #: 06100- 00 -00- 16000, 06200- 00 -00- 00300, 06200 -00 -00 -00500 TOTAL ACREAGE: 06100- 00- 00- 16000(PORTION): 11.24 AC. 06200- 00 -00- 00300: 1.43 AC. (Acres) 06200- 00 -00- 00500: 2.45 AC. Park'A' TOTAL: 15.12 AC. ZONING: NMD PER ZMA# 07 -04 w/ BELVEDERE COD APPROVAL ON JANUARY 5, 2010 (ACCOMPANIED BY APPROVED VARIATION REQUESTS DATED 2 -3 -2010 & 3 -24 -2011) NOTE: THIS PLAN INCLUDES PORTIONS OF BLOCKS 5, 7 AND 9 FROM THE APPROVED REZONING PLAN. THE REMAINDER OF BLOCK 5 WAS PLATTED WITH BELVEDERE PHASE 1. THE REMAINDER OF BLOCKS 7 AND 9 WILL BE PLATTED WITH FUTURE PHASES. PROPOSED USE: RESIDENTIAL 1 51 SINGLE FAMILY DETACHED LOTS AND 24 -36 CARRIAGE UNITS = 75 -87 UNITS TOTAL DEVELOPMENT DENSITY: MIN: 74 DU / 15.12 AC. = 4.89 DUA MAX: 87 DU / 15.12 AC. = 5.75 DUA SUBDIVISION STREETS: CURB & GUTTER PARKING: FOR BLOCKS 5 & 7, PARKING ON LOTS AVAILABILE IN GARAGES AND DRIVEWAYS SHALL BE ACCESSED VIA ALLEYS. FOR BLOCK 9, PARKING IN GARAGES AND DRIVEWAYS SHALL BE ACCESSED FROM THE STREET. ON- STREET PARKING IS AVAILABLE AS SHOWN ON SHEET 3, AND SHEET 6. SOURCE OF BOUNDARY SURVEY: WW ASSOCIATES ALTAI ACSM LAND TITLE SURVEY OF BELVEDERE STATION LAND TRUST LLC 5 DATED FEBRUARY 6, 2006 SOURCE OF TOPOGRAPHY: ( VIRGINIA RESOURCE MAPPING AERIAL SURVEY DATED DECEMBER 22, 2005 (SITE WAS FIELD VERIFIED ON OCTOBER 24, 2012) DATUM: ELEVATIONS BASED ON NAD'83. FLOODPLAIN INFORMATION: Block 2, Commons and THIS PROPERTY IS LOCATED OUTSIDE OF THE FLOODPLAIN LIMITS AS SHOWN ON THE FLOOD INSURANCE RATE MAP, MAP NUMBER 51003CO279D, EFFECTIVE DATE FEBRUARY 4, 2005. STREAM BUFFERS: THERE ARE NO STREAM BUFFERS WITHIN THE LIMITS OF THE PROJECT AREA WATERSHED: UPPER RIVANNA RIVER WATERSHED. THIS PROPERTY IS NOT LOCATED IN A WATER SUPPLY PROTECTION AREA. EXISTING VEGETATION: CLEARED, SLOPING PARCEL WITH GRASS COVER STREET TREES: STREEET TREES TO BE PROVIDED ALONG PUBLIC ROADS IN ACCORDANCE WITH THE CODE OF DEVELOPMENT AND COUNTY REQUIREMENTS. ACCESS: THIS DEVELOPMENT WILL ACCESS EXISTING PUBIC ROADS LOCATED TO THE SOUTH VIA PUBLIC ROADS AND PRIVATE ALLEYWAYS. CURB AND GUTTER AND STORM SEWER SYSTEMS WILL 0.7 CONVEY DRAINAGE WITHIN THIS DEVELOPMENT. ALL PROPOSED ROADS SHALL BE PUBLIC. PHASING: PHASE I: BLOCKS 5 & 9 PHASE II: BLOCK 7 BUILDING SITES: LOTS 146 -196 AND THE RESIDUE OF 06100- 00 -00- 16000, 06200- 00 -00- 003001 06200 -00 -00 -00500 EACH CONTAIN A BUILDING SITE THAT COMPLIES WITH SECTION 4.2.1 OF THE ALBEMARLE COUNTY ZONING ORDINANCE. CONSERVATION PLAN: A CONSERVATION PLAN SHALL BE REQUIRED WITH FINAL ROAD PLANS. CEMETERIES: NO BURIAL SITES WERE FOUND DURING FIELD SURVEY OF THE SITE. UTILITIES: ACSA SEWER & WATER ARE PROPOSED & EXIST ONSITE. IMPERVIOUS AREAS: ROADS & ALLEYS: 2.62 AC. SIDEWALKS: 0.54 AC. LOTS: 1.96 AC. TOTAL 5.12 AC. a- - 1 0 D m7l� D I TABLE 4 - OPEN SPACE: COMPARISON WITH APPROVED REZONING RIO MAGISTERIAL DISTRICT ALBEMARLE COUNTY, VIRGINIA x FF i ° i ✓ f,! ^^ ` e ii I i { M. +Iii S i , ..,. --------- ------------ .----- -..--------- ... ---- --- «"...- .....>...,e ----------- - ------ ,... -------------- ....»n..,..... . .•..... L 66 If 4 f B Y 3 .. _........./ f' v ' BLVEDE E PHASE ,1 I � f ;.: fi . 3 I LOI f i I i ( I a E Iii" L } _ . _ .._ -_ I I r ° ( LOT An LOT 176 LOT 177 LOT 179 LOT i8o LOT 181 ( [' i LOT 178 3! •s � � O F lA i ! fI ± j a �... ......... LOT t/ I �« I� 75 ,...... i s LOT 15 i LOT 162 { 1 9 BLOCKS LOT 146 LOT s74 a i # LOT 158 1 LOT 163 t LOT 147 � a',.. •. • 's.. n • LOT173 ' 7 LOT 164 LOT 157 "' "•.,« >'� ;�� �``•.� �.,, i ,��,�_ �' ' LOT 148 i s LOT 172 'm�tl •^,,, �'" � "°•. LOT 156 � LOT 165 ,r ?, D GRIFFEN PARK LOT 172 * LOT a49 LOT 166 4 x `, "• } ° LOT 135 LOT 1 7o 4 r LOT %So LOT 167 •�„ `, 4," LOT 154 t. LOT 151 LOT169 : LOT -166 r a % LOT 153 e r LOT 152 a { BLOCK 5 RROW DR1vE a,- .. Y UABNEY FAIM .,� • : BLOCK 9 LOT 196 LOT 195 a�S4�.�14[ T^'a j•tp.s,ti'.'�Y•'e }; �0�'4. arv' ��xyr �,f{:irh.. 6°F';�, ' .a - . P. :k tiff'd .y AM AT�I Au�'`'!9`iw'y'i.'' ` °d8 `4�y ..4. y'1• °',X''a °m } { 3f 4 � n+C•�j`.,{° a c'3.'�M1 LOT 193 •f " LOT igi LOT 192 j'''{re y'}x..,fl ra n,�is:jd} a.l ay.. t. ?0.a,am + i'P t•y� { s, LOI LOT189 LOT 188 LOT187t yy sat >r; Sy Div o Er;a ".4 y art ;��aa LOT 186 `` s' �,i � `r tiyY $:.r�'�yyh ;,l "a,.Ys•� ^��..Y• f LOT 24 LOT 185 f' LOT 182 LOT 183 r pd L p f 4.... DUNLORA r SUBDIVISIQNx p � .......... P� 5 a APPROVED WITH REZONING PLATTED PROPOSED WITH PHASE II COMMENTS DIFFERENCE FROM REZONING 0 Block Conservation Area Preservation Area Other Green Space 0 0 Conservation Area Preservation Area Other Green Space Conservation Area Preservation Area Other Green Space Conservation Area Preservation Area Other Green Space Park or Green Space 3.24 4.54 S 40 W00I� RA � DB /PG s ZON CLEARING LIMITS 4 CURB &GUTTER PROPOSED PAVEMENT T VDOT STANDARD STOP SIGN Location (Acres) (Acres) (Acres) 6" DEPTH OF EC-JA DITCH (Acres) (Acres) (Acres) (Acres) (Acres) (Acres) (Acres) (Acres) (Acres) Park'A' 1 2.3 TAB DENOTES TOP OF BOX Not yet platted Block 1 1 0.4 Not yet platted Open Space Block 2 1&2 1.2 5 ( Not yet platted Block 2, Commons and 2 0.7 Greenway Not yet platted Block2 Open Space including Belvedere Blvd plat Block 2 open space remains to be platted. 3 4.22 3.30 Total open space platted thus far is 0.92 ac. SWM #3 DB 3543 PG 225 below rezoning 0.00 0.00 -0.92 Belvedere PH 1 plat platting complete. Open space platted exceeds SWM #4 3 0.4$ DB 3545 PG 54 1.44 rezoning by 0.96 ac. 0.00 0.00 0.96 Belvedere Blvd plat DB 3543 PG 225 & Open space at northerncorner pocket parks Village Green 4 1.4 1.72 Belvedere PH 1 plat remains to be platted. Open space platted DB 3545 PG 54 exceeds rezoning by 0.32 ac. 0.00 0.00 0.32 Belvedere Blvd plat Platted open space includes roundabout and Roundabout #2 Corner Pocket DB 3543 PG 225 & pocket parks. No open space remains to be Parks 4 1.2 Belvedere PH 1 plat 0.70 platted. Total open space platted is 0.5 ac. less DB 3545 PG 54 than rezoning. 0.00 1 0.00 -0.50 Park 'E' 5 0.6 0.53 Proposed C.00 0.00 -0.07 Linear Park 'F' 6 4.12 Belvedere PH 1 plat 3.04 platting complete. Open space platted is 1.08 DB 3545 PG 54 ac. less than rezoning 0.00 0.00 -1.08 Park 'G' 7 1.9 0.75 Proposed 0.00 0.00 -1.15 Park 'H' 8 0.2 Not yet platted Open Space Block 9 9 0.73 1.2 0.5 0 .37 1.96 Proposed - note a portion of block 9 remains to be platted -0.73 -0.83 1.46 Block 9, Preservation Easement 9 0.07 0.63 0.09 0,84 Proposed - note a portion of block 9 remains to be platted 0.02 0.21 0.00 Linear Park 'J' 9 & 10 5.35 Not yet platted Open Space Block 10 10 3.51 4.59 Not yet platted Linear Park 'K" 10 1 0.8 Not yet platted Park 'L' 10 0.5 Not yet platted Park 'M" 10 0.2 Not yet platted Rivanna River Bottomland 10 41.85 Not yet platted 83.65 Acres Total TOTAL 53.81 Acres 7.62 Acres 22.22 Acres Green 10.20 0.09 1.21 3.24 -0.71 I -0.62 -0.98 Space or 40% of Site SHEET LAYOUT SCALE: 1" = 100' GREEN SPACE/ OPEN SPACE PROPOSED: NOTE: ALL OPEN SPACE TO BE OWNED AND MAINTAINED BY THE BELVEDERE HOMEOWNERS ASSOCIATION. NOTE: PORTIONS OF BLOCKS 5, 7 AND 9 ARE INCLUDED KITH THIS PLAN. THE REMAINDER OF BLOCKS 7 & 9 WILL BE PLATTED ON A FUTURE PLAN. THE REMAINDER OF BLOCK 5 WAS PLATTED WITH PHASE 1. THE PRESERVATION AND CONSERVATION AREAS SHOWN WITHIN BLOCK 9 ON THE REZONING PLAN WILL BE PROVIDED WHEN THE REMAINDER OF BLOCK 9 IS PLATTED. CONSERVATION AREA(AC) PRESERVATION AREA(AC) OPEN SPACE(AC} TOTAL GREEN SPACE (AC) BLOCK 5: 0 0 0.53 0.53 BLOCK 7: 0 0 0.75 0.75 BLOCK 9: 0.09 1.21 1.96 3.26 TOTAL 0.09 1.21 3.24 4.54 NOTE: ALL OPEN SPACE TO BE OWNED AND MAINTAINED BY THE BELVEDERE HOMEOWNERS ASSOCIATION. NOTE: PORTIONS OF BLOCKS 5, 7 AND 9 ARE INCLUDED KITH THIS PLAN. THE REMAINDER OF BLOCKS 7 & 9 WILL BE PLATTED ON A FUTURE PLAN. THE REMAINDER OF BLOCK 5 WAS PLATTED WITH PHASE 1. THE PRESERVATION AND CONSERVATION AREAS SHOWN WITHIN BLOCK 9 ON THE REZONING PLAN WILL BE PROVIDED WHEN THE REMAINDER OF BLOCK 9 IS PLATTED. VICINITY MAP SCALE: 1" = 1000' - PROJECT LOCATION " E 2 �. -ja EXISTING CULVERT EARTH DITCH STORMWATER MANAGEMENT PLAN & COMPUTATIONS cUL VER T TOTAL SHEETS 5 DROP INLET & STRUCTURE NO. DRIVEWAY CUL VER T Q BENCH MARK --- S 40 W00I� RA � A`` s ZON CLEARING LIMITS 4 CURB &GUTTER PROPOSED PAVEMENT T VDOT STANDARD STOP SIGN VICINITY MAP SCALE: 1" = 1000' - PROJECT LOCATION SHEET INDEX TITLE SHEET COVER SHEET LEGEND EROSION & SEDIMENT CONTROL NOTES & DETAILS 2 EROSION & SEDIMENT CONTROL PHASE I PLAN EXISTING CULVERT EARTH DITCH STORMWATER MANAGEMENT PLAN & COMPUTATIONS cUL VER T TOTAL SHEETS 5 DROP INLET & STRUCTURE NO. DRIVEWAY CUL VER T Q BENCH MARK --- CURB � CLEARING LIMITS CURB &GUTTER PROPOSED PAVEMENT T VDOT STANDARD STOP SIGN EC -3A DITCH 200 EXISTING CONTOUR 6" DEPTH OF EC-JA DITCH 20 PROPOSED CONTOUR EC -2 DITCH 240.55 PROPOSED SPOT ELEVATION TBC DENOTES TOP /BACK OF CURB 6" DEPTH OF EC -2 DITCH TAB DENOTES TOP OF BOX SHEET INDEX TITLE SHEET COVER SHEET 1 EROSION & SEDIMENT CONTROL NOTES & DETAILS 2 EROSION & SEDIMENT CONTROL PHASE I PLAN 3 EROSION & SEDIMENT CONTROL PHASE II PLAN 4 STORMWATER MANAGEMENT PLAN & COMPUTATIONS 5 TOTAL SHEETS 5 fEROSION CONTROL & WPO AMENDMENT:CHANGES 1 UPDATED EROSION CONTROL PLANS FOR EXISTING CONDITIONS OF THE SITE z REVISED LIMITS OF DISTURBANCE FOR COMPLETION OF REMAINING PHASE IIA 3 UPDATED CALCULATIONS AND DESIGN FOR SEDIMENT BASIN sA, PER EXISTING AS -BUILT SURVEY 4 UPDATED PLAN TO MEET CURRENT VPDES REQUIREMENTS APPROVED by the Albemarle Cnunty Community De✓ve %,,ment Department Dat2 t; File SCOTT COLLINS'I U No. 35791 �NSIONAL E�051 0 E U eU) W Z 0 z w � I� Z Z w LLJ � Z a © Z 0 �U. o� L1 Z U 0 W (I) ( j 0 U_ Z 0 w M Q QZ J U w�/ ED 0 Uj LL z C� z it w w z 0 z I N z J J U 0 Ln a s c W H n r4 U3 o U F.03151IM_ SCOTT COLLINS'I U No. 35791 �NSIONAL E�051 0 E U eU) W Z 0 z w � I� Z Z w LLJ � Z a © Z 0 �U. o� L1 Z U 0 W (I) ( j 0 U_ Z 0 w M Q QZ J U w�/ ED 0 Uj LL z C� z it w w z 0 z I N z J J U 0 Z � M CO N 1 r C'7 N O N N Q W J J W rr H H Q U Se w H Z� w w JU) �W It 0 0 3 m X X m a-. 0 L 3 Qn C C° m c 0 U L 41 Cn C WU L Q o z CE W 0 U L 0 U 0 a o 0 > .N U c 0 y 0 ,ter 6.L 3 F_ 0 Cn 0 G� a Ce L n 0 w T C ° U > ° O V z 0 c 0 ° 0 a w ° m 0 s 3 c P__q U v CL W L d V / d .n o c T ° E C ° W Z of w w z W Z Ln w az J J WU ° J a 0 LUn J � X IL- N W L � _ o V) N JOB NO. E 112059 ° O a SCALE a v AS NOTED c 0 SHEET NO. o a 1 Q) Q) Ln IA c W H n r4 U3 o U 0 CD � al Z � M CO N 1 r C'7 N O N N Q W J J W rr H H Q U Se w H Z� w w JU) �W It 0 0 3 m X X m a-. 0 L 3 Qn C C° m c 0 U L 41 Cn C WU L Q o z CE W 0 U L 0 U 0 a o 0 > .N U c 0 y 0 ,ter 6.L 3 F_ 0 Cn 0 G� a Ce L n 0 w T C ° U > ° O V z 0 c 0 ° 0 a w ° m 0 s 3 c P__q U v CL W L d V / d .n o c T ° E C ° W Z of w w z W Z Ln w az J J WU ° J a 0 LUn J � X IL- N W L � _ o V) N JOB NO. E 112059 ° O a SCALE a v AS NOTED c 0 SHEET NO. o a 1 Q) Q) T C R ON DISTURBED AREAS BY PLANTING SEED 774E EST H DY to achieve a good stand of grass. Silt fence and diversion dykes which are collecting sediment to half their TO REDUCE EROSION AND DECREASE SEDIMENT YIELD FROM DISTURBED AREAS TO PERMANENTLY height must be cleaned and repaired immediately. STABILIZE DISTURBED AREAS IN A MANNER 7HA T IS ECONOMICAL, ADAPTABLE TO SITE CONDITIONS, a - TEMPORARY SLOPE DRAIN 3.15 AND ALLOWS SELECTION OF 7HE MOST APPROPRIATE PLANT MATERIALS TO IMPROVE WILDLIFE 20. All temporary erosion and sediment control measures are to be removed within 3o days of final site HABITAT. TO ENHANCE NATURAL BEAUTY. UPON COMPLETION OF CONSTRUCT /ON AC771/I71ES, ALL stabilization, when measures are no longer needed, subject to approval by the County erasion control AREAS WILL RECEIVE A PERMANENT VEGETA 77VE COVER. inspector. SA SAFETY FENCE 3.01 3.36 SOIL STABILIZATION BLANKETS &MATTING: 21. This plan shall be void if the owner does not obtain a permit within 1 year of the date of approval. (Water 7HE INSTALLA7ON OF A PR07EC77VE COVERING (BLANKET) OR A SOiL STABILIZATON MAT ON A Protection Ordinance section 17- 204G.) PREPARED PLANTING AREA OF A STEEP SLOPE, CHANNEL OR SHORELINE. TO AID IN CONTROLLING 22. Permanent vegetation shall be installed on all denuded areas within nine (9) months after the date the E� TEMPORARY RIGHT -OF- WAY J. EROSION ON CRITICAL AREAS BY PROVIDING A M/CROCL/MATE WHICH PROTECTS YOUNG VEGETATION land disturbing activity commenced. (Water Protection Ordinance section 17- 207B) pp, pp, DI VERSION AND PROM07ES iTS ESTABLISHMENT. APPLIES ON SHORT, STEEP SLOPES WHERE EROSION HAZARD IS HIGH AND PLAN77NG IS LIKELY TO BE TOO SLOW IN PROVIDING ADEQUATE PR07ECTI VE COVER, 3.39 DUST CONTROL: REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBING, DEMOL177ON AND CONSTRUCTION AC77W TIES TO PREVENT SURFACE AND AIR MOVEMENT OF DUST FROM EXPOSED SOIL SURFACES AND REDUCE 174E PRESENCE OF AIRBORNE SUBSTANCES WHICH MAY PRESENT AIBEMAPAE COUNTY HEAL TH HAZARDS, TRAFFIC SAFETY PROBLEMS OR HARM ANIMAL OR PLANT LIFE. DUST CONTROL CONMUCTiClN ENTRANCE MEASURES SHALL BE EMPLOYED TO PREVENT SURFACE AND AIR MOVEMENT OF DUST DURING CONSTRUCTION. MEASURES EMPLOYED SHALL BE IN ACCORDANCE WITH 7HE VESCH. TO F" 7d IiI. I //_,� 29 -­ sla-M AWIFW TOP oOUItsE ` IX A.q . PAVEMENT TOTAL LBS 21A GENERAL SLOPE (3:1 OR LESS) PER ACRE DM SIDE ELEVATION AGGRECaTE BASE E)asTM�c KENTUCKY 31 FESCUE 128 LBS. RED TOP GRASS 2 LBS c�ouND 70' M. Ex. cults OR AWWLT MM wAa WCK EDGE OF PAV'T sx 1a'. EXWNG •-- 2X -.. I MUM MO M WIDTH ATAT 1RA"00 CeME DES014 WATER ELEVATION Is 4.a' PLAN VIEW MUST D aW FULL WUTH OF INGRESS AND EGRESS OPERKnON SET i i 2" WATER IA7H FROST . 12' MIN, PROOF HYDRANT 3' At3OVE GRADE AND dr ,+ OFF EDGE OF PAVEMENT, SECTION A -A NOTE: A MN+N" WATER TRAP OF 1" IS REQUIRED Wit i A MIMMUM WASH HOSE DIE. OF 1.S" 3 � PAYED SIP CWT &M Q sNE MM ATTACH FILTER FABFc TO STAKES OR POST EXTEND /T IN TO TRE` EXCA VA TED BA CKF/LLED COMPACTED )EN STAKE L POST 'TH = 5' MIN. SIL T FENCE D DWI THOUT WIRE SUPPORT) 3.0D NO SCALE . SET POSTS AND EXCA VA TE A 4"X4" TRENCH UPSLOPE ALONG THE LINE OF POS TS --`'_% ul ,:�� I - ,-_< I%_ C'� i - -11=I = FLOW i -1 4 SEASONAL NURSE CROP 20 LBS. SEASONAL NURSE CROP 150 LBS FEBRUARY 16 THROUGH APRIL ANNUAL RYE MAY 1 THROUGH AUGUST 15 FOXTAIL MILLET AUGUST 16 THROUGH OCTOBER ANNUAL RYE NOVEMBER THROUGH FEBRUARY 15 WINTER RYE NOTES: 1. LIME AND FERTILIZER NEEDS SHALL BE DETERMINED BY SOIL TESTS AND APPLIED IN ACCORDANCE WITH VESCH STD. 3.32. 2. SEEDINGS TO BE MULCHED IMMEDIATELY UPON COMPLETION OF SEED APPLICATION, IN ACCORDANCE W/ VESCH STD 3.35. PERMANENT SEEDING SCHEDULE NO SCALE (STD. & SPEC. \3.32 OF VIRGINIA EROSION & P S SEDIMENT CONTROL HANDBOOK, 3RD ED.) PLANTING DATES SPECIES RATE 50/50 MIX OF (LBS /ACRE) ANNUAL RYEGRASS SEPT 1 -FEB 15 (LOLIUM MULTI- FLORUM) 50 -100 & CEREAL (WINTER) RYE (SECALE CEREALE) FEB 16 -APR 20 ANNUAL RYEGRASS 60 -100 (LOLIUM MULTI- FLORUM) GERMAN MILLET MAY 1 -AUG 31 (SETARIA ITALICA) 50 SEEDINGS MADE IN FALL FOR WINTER COVER AND DURING HOT AND DRY SUMMER MONTHS SHALL BE MULCHED IMMEDIATELY UPON COMPLETION OF SEED APPLICATION WITH TACKIFIED STRAW, IN ACCORDANCE WITH VA E &S STD 3.35. TEMPORARY SEEDING SCHEDULE NO SCALE (STD. & SPEC. 3.31 OF VIRGINIA EROSION & TS SEDIMENT CONTROL HANDBOOK, 3RD ED.) 2. STAPLE WIRE FENCING TO THE POSTS. J. ATTACH THE FILTER FABRIC TO THE WIRE FENCE AND EXTEND l T INTO THE TRENCH. SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE HEAVY FLOWS ARE EXPECTED AND Vt'I-IERE AN Cr�,7ERFLOW CAPACITY IS�s NECESSARY TO PREVENT EXCESSIVE PONDING TI ARV V1:VrIJ 1L:r +7Tli V VTA.J E. GRAVEL SHALL BE VDOT /#S, ##357 OR ##5 COARSE AGGREGATE, Source: Va. DSWC 4. BACKFILL AND COMPACT THE EXCA VA TED SOIL. ` u�x //� - t ��____ �� 1 ;�� �_1000' 1 - '" �. / " �i I C. -1I1 -I I . -_I I I ' r- �' - l- - - - -- i - - SILT FENCE ( D (WITH WIRE SUPPORT ) (!ED NO SCALE EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. 111-38 SH, SLR Plate 3.07 -3 1992 GRA VEL CURB INLET SEDIMENT _ �' - , _ ' .- ---" _ ' '' - t (/ - / I ' GRAVEL FLTER 12. \ RUNOFF WATER -- \ f f ` ' SEDIMENT - CONCRETE GUTTER SPECIFIC APPLICATION WIRE MESH FUERED WATER \\- CL,IRB INLET 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 U3PIROTECTED AREAS. - GRAM, SHALL BE VDOT #3, #357 OR 5 COARSE AGGREGATE, Source: Va. DSWC 111-41 3.07 Plate 3.07 -6 / r- - - . / Y - - , . . / ' IhIhIIF . . . �■� - 11 I- 127 "01 - == o . - . � . lr • ♦. . ♦♦, I 1 ♦ . 1 ♦ ♦ • ♦. �I ♦ /I, /II I % %� /I / /I /l :71I1t! i ��II�i�1��HlU - tI1��1.11 ♦1 ♦ ♦ ♦1 ♦ ♦ /I ♦ ♦� /j ♦0 �� ♦1 ♦� ♦� ♦ % %ii�ii------ .:��i��i�r��.;��i /iiiii iiiiii %ii�'l Tod'...: I .. • I X11- [[- 1�!�0♦*♦*♦���. *'�'.•'• ♦•'•'.....,... "... s::'� ♦i �i. , �i vsiii�Rr �,�rrrs+ 1 f ff II iI iI L ♦ ♦ ♦ ♦ ♦ ♦i-'•'!3:.:c ::c • I r s • ♦ ♦ ♦��I� /I IFZ /` / / /I�r :.i_,7 I /ll�i' /Iil�flffss» i, . � � ♦1111 ♦ ♦�1� /j.♦•+♦�ii�s� /s��s . I , . 5:_ ����������i���I����-------- wwwwwwo �It�GGi1�/f���s� ��1 ♦1��� %� ♦�Iiiiiiiii�al �SS�� +�������j�4j��Ij�1j %% �� 1�IVr %IiNi� %!n; %f%�'s� iii r A I� r I II .1.� ♦`�`��1��j�1��iiiiiiisiii • ♦����j �i �I��If/ I /�Ill�t�<tl�i��l�i�,t //fffsa *� / / II 1� ♦���♦/�Iiiiii °i-- -- �SS������������� I / /►I��I��I���I��ItftafJffll jl!Iffff /��t•� / / ♦� Iiisii�WA�iiru I)( *. �IjIIffls•I jf j %�I�i~i1 II ��Iwiw��i�iii --- *A���j � iIjI111iiiiiiiN&,M= i fji�� 'i���i�::�� J1 =1t 11 11= 1 lw /. ,., �Ij111i�1 , %ii�i�i�u 11 I �i��j�liisiiiiiiii�,ii1� %i� lliiiiwii %iiii M. 1. hI�JLIi r - r it �n II r l l r ► : r 'r • r 'r r - inches thick without a risk of frequent flooding and ponding. 20C3 - Cullen clay loam- 7% to 159' slopes. This soil is well drained & typically has a very !ow to moderately high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically moderate. The surface layer is generally 0 -8 inches thick without a risk of frequent flooding and ponding. 2B - Albemarle fine sandy loom- 2% to 7X slopes. This soil is well drained & typically has a moderately high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically low. The surface layer is generally 0 -5 inches thick without a risk of frequent flooding and ponding. 22C3 - Culpeper clay loam- 7% to 159' slopes. This soil is well drained & typically has a very low to high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically moderate. 7h a surface layer is generally 0 -8 inches thick without a risk of frequent flooding and ponding. 19B - Cullen loam- 2X to 7X slopes. This soil is well drained & typically has a very low to high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically moderate. The surface layer is generally 0 -8 inches thick without a risk of frequent flooding and ponding. 21H - Culpeper fine sandy loam- 2% to 7% slopes. This soil is well drained & typically has a very low to high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically moderate. The surface layer is generally 0 -8 inches thick without a risk of frequent flooding and ponding. 39D - Hazel loam- 159' to 25X slopes. This soil is excessively drained & typically has a moderately high to high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically low. The surface layer is generally 0 -10 inches thick without a risk of frequent flooding and ponding. Reference: web soil survey online database, found at Ht tp: / /websoilsurvey. Nres. Usda. Gov /app /websoilsurvey. Aspx Stormwater Management Sfandard Dimensions MWITOTHMA .1 • • 1 a t R i .. 24 30 48 58 34 1.49 27 331/2 64 72 371/2 2.28 30 37 60 72 41 2.26 36 44 60 72 48 2.22 42 51 72 86 55 3.16 48 58 84 100 62 4.27 54 Fi61 /2 84 140 70112 4.20 60 72 96 114 76 5.48 66 80112 96 114 841/2 5.39 72 86 108 128 90 6.83 78 94112 126 147 98 112 8.97 84 100 126 147 104 8,80 90° Typ. _ ".' ' InletlArea -,, s - '\ (,' f/ ,x,, '11- �I- "` �1 " \ 1/ // r/ OutletlArea �+`� \� �t 1 it 7 1 �- 11 I 1...- .�._�--__ �_-u_--1-. A II It °t t _ ti--- - !i 1? 1 A 1 \A � / // I \ \\ \ I / j // ! \\ \ \1 ��� !/ I 11 i t,.r , - I - O tional �i- A L 6"o vent Frame & Grate Std. Cast in Top Slab Plan View Anti - Vortex Cap O.D. Anti -Vortex Cap 1. 11 1•-- -- Notch Diameter i l N It I I - r 1.7-11 E_ Z m I I Anti - Vortex Riser LID. 2" , Anti -Vortex Riser O.D. tote: I -` v and Riser) Manufactured in (1,) Anti-Vortex device (Gap a ) accordance with ASTM G478. (2.) Dimensions subject to permissible variations of ASTM G478. (3.) Inlet area (Area between device I.D. and riser O.D.) is greater than outlet area. {Area of riser LD.) (4.) Slab reinforcement to be ASTM A615 #f4 bars @ 8" E.W. . Circumferential reinforcement to be A� = 1' C 0.150 2x 6 W2.5 x `<N2.5 WMF minimum. Material properties: f'c = 4,000 p.s.i., fy = 60,000 p.s.i. Concrete cover ,over f. 4 ksi, Concrete cover over reinforcement (CCOR) = 1" unless noted. (5.) DI -1 Frame & Grate Is available for 48" I.D. risers and larger. TITLE Precast Anti- Vertex Device (Cap and Risen + Section A -A -Flo scale- AII dimensions subject to allowable specification tolerances. . STATE SECTIO%PAOE DATE 2001 VA 14,1 03 -15 -06 Hal"1,a�(M CURB INLET Z<7 - FIGIiRE 3,01 - la Honitugeneous Etnbat&inents fv1 w5'eepa,c,,e Controls Rornogeneous fill 4' rifin `T l --lut off tr�nafi- , teelow mit,3 e mareri Suil or rock - TYPICAL HOMOGENEOUS EB,�NKMEIT r. ....w` 00,3r filter rI sI :t F' , rarT�t�d ter t1r '1� aroiuN slots - � T c�undatioii drain FOUNDATiON DRAIN 11 c: \3._01 -10 Tr nsit-on fill' ,,Rook or gravel '- Ranket droin BLANKET DRAIN rnnsy drain r, Sarni, or rock drain milt r Rock or gravel ,Atk ttrG /. , "I 11fI ,� , �Iransltion filter Tronsition filter CHIMNEY DRAIN TOE DRAIN ISiWia.'r','8C,� i� ?!Sm -17 ',eil�i i(`lil ,J/Ivlu(.fi 3.01 - 3 Technical Bulletin T Minimum Standard 3.02 ter` L/2" kne plater) hook attr-ObV4 wi ; /a' .t6 ter 8 -1 /0' slice, hraiax rr. W.ZW_ �i; -:-A \-` Isometric 1/4' IMPFE pdate t - .. F _.-, r . � . .�-­' Z A4 � ®., HiiPE a a^siict�,lr\cI leaf#10 with e E i Z-11/W" h4lea and i74` ptate n�snuftatured >ar Piast4a + Sa•1abisrm Ina. or equal .:�_ ..11, a,s+Wl� mth ort�aj plate ar . .. 1T aid rvna. �G Section m.e.u>&t�t:ursd< WY 41St to t�ola#:�aans Iz��, wr mqus1 BfII" slice. �4 - - I �" i -�s�T std, -s I 0 I I I I 1 , IX r__ - -- - - - - --I - Dales I -- - - - --- _�----------- - - - - -- ariflu4 leva .ion ariflae BM DEBRIS CAGE SOLUTION' Box f�V 0. INC- -M-ak /A sWW.P 0ik -30kkW .4aml TTB7 3 FILTER FABRIC ENTRENCHED 6" COMPACTED SOIL 3' MINIMUM _::7, I-"_ 111001 111111 - _____ 3s III I!I II1111111111- _ ;_ 111- _ __ � 11 111 I I 1 111 24„ _- =- 1 -1 i I I I 1 =1 11 111, I I I- - -I I F_ E I I 11=1 I I I I II -1 __ _ _ - :: -- , � - -1 I = 11� I IC III �I 11 I 1 III ! ! 1- -- I I .._I I Im- --1 I 1- ..__MI I I - -1 I 1 I; ICI I I_- _I !' � I� t 8' D TEMPORARY DI�TERSION Sediment Basin Design #2 - tffiPp.1 °i1 5P14LtlY41' ds!M �,?' a4mgw( 2'rittHQtrr J, SPILLWAY drainage area (acres) 6.53 DESI" HIGH WAT R I basin votumess. (ustrig 2' contour internals) (25-'fk. STORM E'r elevation (ft) contour area lsf) volirre(cy) - -_�_- _ -- - - - - -- 414_.; 1;10?.0 0 I I _ %T._ _ . . Mim CREST 416.00 1792.0 109 - E � ,�,NG 41 _fj 5 0 26B ._ ,_. , . t�CL W..,dR,�3E :. :.:'.: 4uu.�.,'} b401.0 JtJ+'r . 421-2 .00 4362.0 9` 5 SE 4MF-NT CLL4 0C ff #-"Owl f 42#,4.()0 5424_i0 1347 C 3. TO GEREEDJUD v�et storage wet sbrage required (cy) (67'11DA) 438 design high inter 422,50 de>«watering orifice ele_ -&bon (ft) 419.06 top of dam (ft) 424.00 ;net storage pro \ded at this elevation (cy ) 438 top width of da:m (ft) 6.0 availabte vokirre before cleanout (cy;) (.04 *DA) 22:2 bottom of basin (f) 414.0 cicarm ut elevation (ft) 417.36 approx bottom dimensions. 56x32' distance from cL-anout to orifice (fit) (° V) 1.7 upstream face slope: 2:1 max dov i&eamface slope_ 3.1 rtin. dry storage: dry storage required (cy) (67x0£) 438 baffles: YES principle spiitviey crest (fit 421.60 length of flotp<: L. (ft) 60 dry storage provided at this elevation, (cy) 448 effective v.idth, VVe (ft) 82.3 diareter of de watering orifice (in) 6 -0 L. I We (baffles required if { 2) 0,6 diameter of flexible tubing (in) (ohfiir_e +Z') g -O colars: YES runoff depth of venter at spiltomyr crest (fl) 7.r0 C (use 0 -45 for Mare ear-h) 0 -45 stripe of .upstream face (Z.1) 2 tc (gin) 11 slope of barrel (Sb) 0.50 °'0 12yr 4 -0 Q2vr 11.20 length of barrel in saturated zone (Ls) 40 125yr 6 -7 Q25yr 21.7 number Collars required' 2 dimension of collars 4.3'x43° principle spilh.y: avaitabte head (ft) 0.00 etTergency spin y= YES diameter riser (in) 30 required cawAyr (025 -C1p) (cfs} 0.0 spillway capacity, Op (cfs) 29.0 bottom v.tdth (ft) 10 diamter trash rack (iri) 42 siope of exist channel (ftfft) 1% barrel Length (ft) 0 minimun length of exit channel (ft) 6 head on barrel through err - banker -tit (ft) 3.5 crest of sptlWay (ft) 422.5 diameter of barrel (in) 24 SEDIMENT BASIN SB -,2 674 TOPSOIL EXISTING GROUND 1VTS - 6 42" 1. D. 15" HIGH TOP OF DAM ELEV. = 424.00' I TEMP. CMP TRASH RACK DEVICE 25 YR. STORM 1.0' MIN . _ "```.". - EMERGENCY SPILL WAY 1 -; - 111- ELEV. = 422.5' _ ., CREST ELEV. = 422.5 C___ � RISER TOP ELEV. = 421.5' 1.0 MIN.. » 16 . -� -; 30 DIE. CMP RISER I nc. _ DRY VOLUME ELEV REQUIRED = 421.45'f;;, ` 1' SCARIFIED KEY FOR 6" DiE. DEWATERING SOIL COHESION I t± ; i ........... ; DEV1 CE : >: » >:: >:::: >:: »::_::_: >. IN V. OUT= 418.8 n UPSTREAM TOE OF DAM ....., XISTING GROUN ELEV = 414 00 �x MIN. 30" COMPACTED .` SOIL OR A GGREGA TE OVER ` "`? "i OUTLET PROTECTION BASE PLATE VDOT CLASS H, EC -1 BOTTOM OF BASIN 5X5',014" THICK GALV CLAY ORED DAM RIPRAP w/ ELEV. = 414.00 STEEL BASE PLATE KEYED INTO THE GEOTEXTILE FABRIC EXISTING GROUND UNOERLAYMENT IN IN = 419.0' 24" CMP (2) 4.3 X 4.3' GAL V. STEEL LEN GTH =40' ANTI -SEEP COLLARS SLOPE =0.5% �T-oF �' f o scoT x. cor�.ixsz U No. 35791 ,2� V-6 Oiv, � ��• o IONAL - Z O t a W Z O �, R •� U) z 0 ti LU U) W 1W UJ a H Z Z W W 2: Z Q 0 O Z O V a V H D W V: 0 o oG Z O W D_ Z > � g w a- Ln Ln W ,aC Ln Ln W T-1 71 O o 1-4 V-4 d z it W W Z 0 z W Ln z J 0 0 0 C 0 M C 0 0 c 0 Z 3 0) 0 0- X 0 a) 0 r 3 C" a N C 0 U F, 0) C 0 0 0 C a C n 0 W 0 Ll ., r_ 0 0 0 a 0 0 c 11 a 0 3 0 c 0 a m .. a C it O N O C. D CL >1 a 0 a Q W n 0 C v C m v C a W O CL S `0 a? O C C V 0 0 a 0 CL 0 " 0 n 0 c T a E a C a D K Y .d A Z Z Z J J D 0 T 0 0- 0 n. > 0 0 X 0 4) L a C acs C 0 v v 1 v_ U 0 rn N a C a 9, C a 0- 0 W LEGEND E EROSION & SEDIMENT CONTROL E EROSION CONTROL NOTES D DESCRIPTION OF EROSION lac SEDIMENT EROSION CONTROL NOTES & NARRATIVE MEASURES. E ES - CONTROL MEASURES. . ROADS M -1: U . Ls ®f EXISTING CULVERT S STRUCTURAL EROS /ON AND SEDIMENT CONTROL PRACTICES SHALL BE IN ACCORDANCE WITH THE T SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING P EROSION AND SEDIMENT CONTROL MEASURES: T THE PURPOSE OF THIS LAND - DISTURBING AC77WTY IS TO CREATE A RESIDENTIAL HOUSING DEVELOPMENT THAT IS K17HIN OS/ON AND SEDIMENT CONTROL HANDBOOK. S77 ?UCTURAL PRACTICES USED /N THIS VIRGINIA ER S SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625 -02 -00 EROSION I IT IS ANTICIPATED THE USE OF A CONSTRUCTION ENTRANCE, DIVERSION DIKES, SEDIMENT T THE BELVEDERE MASTER PLANNED COMMUNITY. ROAD, LOT GRADING, U11L/77ES AND STORMWATER MANAGEMENT ARE CULVERT S SEC77ON CONSIST OF THE FOLLOWING. A AND SEDIMENT CONTROL REGULATIONS B BASINS AND SILT FENCES WILL BE INSTALLED TO CONTROL SURFACE DRAINAGE. TEMPORARY P PROPOSED WITH THIS PLAN TO ACCOMMODATE THE DEVELOPMENT. THE TOTAL ACREAGE TO BE DISTURBED !S 10.60 3.01 SAFETY FENCE: P ES -2: THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE A SEEDING WILL BE USED IMMEDIATELY FOLLOWING ALL LAND DISTURBANCE ACTT VI TIES. ACRES AND CLEARING /S PROPOSED. DROP INLET & S7RUCTURE Na 3 PRE - CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF E TEMPORARY STOCKPILE AREAS WILL BE MAINTAINED FROM TOPSOIL THAT NILL BE S EXISTING S17E CONDITIONS: A PR07EC77VE BARRIER INSTALLED TO PREVENT ACCESS TO AN EROSION CONTROL MEASURE. TO T LAND DISTURBING ACT7Vl TY AND ONE WEEK PRIOR TO 774E FINAL lNSPECT70 . N 7 STRIPPED 774E EXISTING SITE IS A VACANT HILLY PARCEL, SLOPING FROM NORTH WEST TOWARDS SOUTH EAST. THE SiTE 1S CURB P PROHIBIT THE UNDESIRABLE USE OF AN EROSION CONTROL MEASURE BY THE PUBLIC. APPLICABLE E ES-J.-ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR F FROM AREAS TO BE GRADED AND STORED FOR LATER SPREADING STOCKPILE LOCATIONS G GENERALLY WELL DRAINED AND EROSION AND SEDIMENT CONTROL MEASURES HAVE BEEN DESIGNED TO CONFORM TO THE TO ANY CONTROL MEASURE OR SERIES OF MEASURES WHICH CAN BE CONSIDERED UNSAFE BY VIRTUE A AS THE FIRST STEP IN CLEARING. S SHALL BE ON SiTE AND SHALL BE STABILIZED WITH A TEMPORARY VEGETA TI VE COVER. E EXISTING S17E SLOPE AND PROTECT THE DOWNSTREAM AND ADJACENT PROPERTIES THE S 17E HAS BEEN PREVIOUSLY CURB &GUTIER O OF POTENTIAL ACCESS BY THE PUBLIC. E ES -4: A COPY OF 11-IE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE P PERMANENT SEEDING WILL BE PERFORMED FOR ALL AREAS WHICH WILL NO LONGER BE D DENUDED AND RE- STABILIZED AS SHOWN ON SHEET 3 W17H EROSION AND SEDIMENT CONTROL MEASURES, SEEDING, PROPOSED PAVEMENT 3 3.02 CONSTRUCTON ENTRANCE. • E MAINTAINED ON THE SITE AT ALL TIMES S EXCA VA TED AND WHERE CONSTRUCTION ACT7071ES HAVE CEASED. PERMANENT SEEDING SHALL STONE, AND OTHER MEASURES OF STABILIZE T70N. A STABILIZED PAVED CONS TRUC7ON ENTRANCE KITH A WASH RACK LOCATED AT POINTS OF I INDICATED ON THESE PLANS (INCLUDING BUT NOT LIMITED TO, OFF -SITE BORROW A ALSO BE PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR A YEAR A ADJACENT AREAS: EC -3A DITCH V VEHICULAR INGRESS AND EGRESS ON A CONSTRUC7ON S17E TO REDUCE 7HE AMOUNT OF MUD O OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION O OR MORE SELECTON OF SEED MIXTURE WILL DEPEND ON THE 77ME OF YEAR APPLIED. T THE SITE IS BORDERED BY THE EXIS77NG DUNLORA DEVELOPMENT TO THE SOUTH EAST, EXISTING BELVEDERE PHASE i TO I D TRANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF. CONSTRUCTION C CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN T TEMPORARY SEEDING WILL BE PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE LEFT W THE SOUTH WEST, THE FUTURE, BUT CURRENTLY VACANT, BELVEDERE BLOCK 4 TO THE NORTH WEST AND A VACANT DEPTH OF EC -3A DITCH E ENTRANCES SHALL BE INSTALLED AS SHOWN ON THE PLANS TO REDUCE THE AMOUNT SEDIMENT A APPROVING AUTHORITY. T WOODED AREA TO 774E NORTH. F6- T TRANSPORTED ONTO PUBLIC ROADWAYS. E ES -6: THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION D DORMANT FOR MORE THAN SEVEN DAYS. THESE AREAS SHALL BE SEEDED VII7H FAST O OFFS17E LAND DISTURBANCE: - °- -' EC -2 DI TCH C CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTA 77ON AS G GERMINA TING VEGETA 77ON IMMEDiA TEL Y FOLLOWING GRADING OF THOSE AREAS SELECTION OF T THIS PROJECT PROPOSES NO OFFSITE DISTURBANCES 3.05 SILT FENCE: D DETERMINED BY THE PLAN APPROVING AUTHORITY. S SEED MIXTURE WILL DEPEND ON 7HE 77ME OF YEAR APPLIED. S S: A TEMPORARY SEDIMENT BARRIER CONSIS77NG OF A SMTHE77C FILTER FABRIC STRETCHED ACROSS E ES- 7. C 6" DEPTH OF EC -2 DITCH A AND ATTACHED TO SUPPOR77NG POSTS AND ENTRENCHED, TO INTERCEPT AND DETAIN SMALL A AT ALL 71MES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT CRITICAL SLOPES SITE CONSISTS OF MANMADE AND NATURAL SLOPES. A PORTION OF THESES SLOPES N9LL BE AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING C0NS7RUC770N OPERA7ONS IN ORDER TO U UNTIL FINAL STABILIZATION IS ACHIEVED. 3 3.01 SAFETY FENCE - SAFETY FENCE WILL BE INSTALLED AROUND PROPOSED SEDIMENT D DISTURBED WITH 7HIS WPO PLAN. 7HE EXIS77NG STREAM BELOW THE SEDIMENT BASINS IS ALSO A CRITICAL RESOURCE EARTH DITCH P PREVENT SEDIMENT FROM LEA ONG THE SITE, AND TO DECREASE THE VELOCITY OF SHEET FLOWS AND E ES -8: DURING DEWA TER /NG OPERA RONS, WATER WILL BE PUMPED INTO AN APPROVED B BASINS AND POTENTIAL FIELD - FITTED SEDIMENT 7RAPS T TVA T NEEDS TO BE PROTECTED A T ALL TIMES. "' -" " -� L LOW -TO- MODERATE LEVEL CHANNEL FLOWS THE SILT FENCE BARRIERS SHALL BE INSTALLED DOWN W WATER FILTERING DEVICE. 3 3.02 CONS7RUCT/0N ENTRANCE - ONE CONSTRUCTION EN77?ANCE IS PROPOSED AND IT DRIVEWAY CULVERT I SLOPE OF AREAS WITH MINIMAL GRADES TO FILTER SEDIMENT LADEN RUNOFF FROM SHEET FLOW AS E ES -9: THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY T SHALL BE INSTALLED A T 774E END OF THE PAVEMENT ON FARROW DRIVE ENTERING THE SITE. S THIS SITE CONSISTS OF SEVERAL SOIL TYPES SEE THIS SHEET FOR FURTHER DETAILS INDICATED. THEY SHALL BE INSPECTED IMMED/A TEL Y AFTER EACH RAINFALL AND MAINTAINED IN A AND AFTER EACH RUNOFF - PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS S SEQUENCE OF CONSTRUCTION: BENCH MARK A ACCORDANCE NTH THE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK ( VESCH). O OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CON7ROL DEVICES T THIS LOCATION WILL BE THE ONLY POINT OF INGRESS AND EGRESS TO THE SITE, UNLESS 1 1 NOTIFY ALBEMARLE COUNTY TO SCHEDULE A PRE- CONS TRUC7ON MEETING AS REQUIRED. SHALL B COUNTY INSPECTOR. CARE SHALL BE TAKEN TO PR07ECT ALL 2 2. NO EROSION CONTROL MEASURES MAY BE REMOVED DURING 7HE C0NS7RUC770N PROCESS WITHOUT THE APPROVAL _ _ _ _ _ CLEARING LIMITS A 3.07 STORM DRAIN INLET PROTECRON: E EROSION CONTROL NOTES 3 EXIS77NG ROADS & ALLEYS FROM TRANSFER OF SEDIMENT. F FROM THE INSPECTOR ON 774E PROJECT. E NT E ON THE DOWNSTREAM SIDE OF DISTURBANCE J J. CONTRACTOR SHALL INSTALL ALL PROPOSED EROSION AND SEDIMENT CONTROL MEASURES BEFORE ANY SITE as n PERMANENT STABILIZATION OF lHE DISTURBED AREA. INLET PROTECTION APPLIES WHERE STORM G neral construction notes for Erosion and Sediment Control lans WHERE N07ED ON THE PLANS. D DISTURBANCE SHALL TAKE PLACE. CONTRACTOR SHALL ENSURE THAT THE EXIS77NG EROSION CONTROL MEASURES � V DRAIN INLETS ARE TO BE MADE OPERATIONAL BEFORE PERMANENT STABILIZATON OF THE i i. The plan approving authority must be notified one week prior to the pre- construction conference, one 3 3.07 STORM DRAIN INLET PROTECTION- !P NILL BE INSTALLED ON EACH PROPOSED INLET AND ARE FUNCTIONAL ONS/TF, AND 174E CONTRACTOR SHALL ENSURE THAT THE PROTECTIVE FENCING AROUND THE BASINS -- --- - -200- --- -- - EXISTING CONTOUR C CORRESPONDING DISTURBED DRAINAGE AREA. w week priortothe commencement of land disturbing activity, and one week prior to the final inspection. N NEIGHBORING EXIS77NG INLETS AS SHOWN ON THE PLANS I IS INSTALLED. THE CONTRACTOR SHOULD NOTE THAT CONSTRUCTION OUTSIDE OF THE LIMITS OF DISTURBANCE IS PROHIBI TAD. Ill R RARY DIVERS /ON DIKE.- 2 2. All erosion and sediment control measures will be constructed and maintained according to minimum 3 3.09 TEMPORARY DIVERSION DIKE- DIVERSION DIKES WILL BE USED AROUND THE PERIMETER 4 4. INSTALL PAVED CONSTRUCTON ENTRANCE WITH WASH AREA AS SHOWN ON THE PLANS THE CONSTRUCTION 2pp PROPOSED CONTOUR A A TEMPORARY RIDGE OF COMPACTED SOIL CONSTRUCTED AT 771E TOP OR BASE OF A SLOPING s standards and specifications of the Virginia Erosion and Sediment Control Handbook and Virginia O OF SITE DISTURBANCE WHERE SHOWN ON THE PLANS TO DIRECT RUNOFF TO ON -SITE E ENTRANCE SHALL BE INSTALLED WHERE CONSTRUCTION VEHICLE ROUTES INTERSECT PAVED PUBLIC ROADS, DISTURBED AREA. TO DIVERT STORM RUNOFF FROM UPSLOPE DRAINAGE AREAS AWAY FROM R Regulations VR 625 -02 -oo Erosion and Sediment Control Regulations. S SEDIMENT CON7ROL FACILITIES P PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY (VEHICULAR) TRACKING ONTO THE PAVED 240.55 PROPOSED SPOT ELEVATION U UNPROTECTED DISTURBED AREAS AND SLOPES TO A STABILIZED OUTLET. TO DIVERT 3 3• All erosion and sediment control measures are to be placed prior to or as the first step in clearing. 3 3.14 TEMPORARY SEDIMENT BASIN- TEMPORARY SEDIMENT BASINS WILL BE INSTALLED AND S SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PUBLIC ROAD SURFACE, THE ROAD SHALL BE CLEANED IBC DEN07ES TOPIBACK OF CURB S SEDIMENT -LADEN RUNOFF FROM A DISTURBED AREA TO A SEDIMENT - TRAPPING FACILITY SUCH AS A 4 4. A copy of the approved erosion and sediment control plan shall be maintained on the site at all times. M MAINTAINED WHERE SHOWN ON THE PLANS T THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR TIB DENOTES TOP OF BOX S SEDIMENT TRAP OR SEDIMENT BASIN. USE WHEREVER STORMWATER RUNOFF MUST BE TEMPORARILY S S. Prior to commencing land disturbing activities in areas other than indicated on these plans (including, but 3 3.18 OUTLET PROTECTION- TO BE PROVIDED AT THE OUTFALL OF DRAINAGE PIPES WHERE S SWEEPING AND 7RANSPORTING TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED DIVERTED TO PR07ECT DISTURBED AREAS AND SLOPES OR RETAIN SEDIMENT ON S17E DURING n not limited to, off -site borrow or waste areas), the contractor shall submit a supplementary erosion control O ONL Y AFTER SEDIMENT IS REMOVED IN THIS MANNER. * VIRGINIA EROSION & SEDIMENT CONTROL p CONSTRUC770N. THESE STRUCTURES GENERALLY HAVE A LIFE EXPECTANCY OF 18 MONTHS OR LESS, S plan to the owner for review and approval by the plan approving authority. / SHOWN ON PLANS 5 5. INSTALL AND OR MAINTAIN ANY ADDITIONAL INITIAL CONSTRUCTION MEASURES AS SHOWN ON 774E PHASE / EROSION EROSION CONTROL * WHICH CAN BE PROLONGED WITH PROPER MAINTENANCE. 3 6. The contractor is responsible for installation of any additional erosion control measures necessary to P 3.19 RIPRAP- RIPRAP SHALL BE INSTALLED AS OUIZET PR07ECT70N WHERE SHOWN ON THE C CONTROL PLAN SHEET. THIS INCLUDES THE PERIMETER DIVERSION DIKES, INLET PROTECTIONS AND SILT FENCE. * 3 3.11 7EMPORARY RIGHT -OF -WAY DIVERSION: p prevent erosion and sedimentation as determined by the plan approving 3 PLANS. RIPRAP IS ALSO PROPOSED AT SPECIFIC LOCA7ONS NOTED ON THE PLANS. M MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONS7RUCTAD AS A FIRST STEP WITH ANY LAND DISTURBANCE a STRAW BAIL BARRIER 3.04 A A RIDGE OF COMPACTED SOIL OR LOOSE ROCK OR GRAVEL CONSTRUCTED ACROSS DISTURBED a authority. 6 3.31 TEMPORARY SEEDING- TEMPORARY SEEDING SHALL BE APPLIED WHERE SHOWN ON THE A ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. R RIGHTS -OF -WAY AND SIMILAR SLOPING AREAS. TO SHORTEN THE FLOW LENGTH W THIN A SLOPING . . All disturbed areas are to drain to approved sediment control measures at all times during land disturbing P EROSION CONTROL )IAMB AS SHOWN ON THE PHASE / EROSION CONTROL PLAN. RIGHT-OF-WAY THEREBY REDUCING THE EROSION POTEN7AL BY DIVERTING STORM RUNOFF TO A a activities and during site development until final stabilization is achieved. 3 3.32 PERMANENT SEEDING- PERMANENT SEEDING SHALL BE APPLIED WHERE SHOWN ON THE 7 7. ONCE ALL THE EROSION CONTROL 17EMS HAVE BEEN INSTALLED AND /OR MAINTAINED AS SHOWN ON 774E PHASE / S �� TEMPORARY DIVERSION DIKE 3.09 S STABILIZED OUTLET. GENERALLY, EARTHEN DIVERS IONS ARE APPLICABLE WHERE THERE WILL BE g g, During dewatering operations, water will be pumped into an approved filtering device. P PLANS E EROSION CONTROL PLAN AND THE INSPECTOR HAS APPROVED THE EROSION CONTROL MEASURES, THE CONTRACTOR ST 83 ♦ TEMPORARY SEDIMENT TRAP 3.13 A LITTLE OR NO CONS7RUC77ON TRAFFIC WITHIN TIME RIGHT-OF-WAY GRAVEL STRUCTURES ARE MORE 9 9 The contractor shall inspect all erosion control measures periodically and after each runoff producing 3 3.36 SOIL STABILIZATION BLANKETS AND MATTING- BIM SHALL BE EMPLOYED WHEREVER C CAN BEGIN GRADING OPERATIONS rainfall event. Any necessary repairs or cleanup to maintain the effectiveness of the erosion control devices S SHOWN ON THE PLANS OR WHERE SLOPES EXCEED J. 1 SLOPE. 8 J. TEMPORARY SEDIMENT TRAP: s shall be made immediately. 3 3.39 DUST CONTROL- DUST CONTROL SHALL BE APPLIED THROUGHOUT 7HE SITE WHERE F FINAL GRADE IS REACHED ON ANY POR77ON OF THE SITE TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SB � SEDIMENT BASIN 3.14 A A TEMPORARY PONDING AREA FORMED BY CONS7RUC71NG AN EARTHEN EMBANKMENT WI7H A STONE z zo. All fill material to be taken from an approved, designated borrow area. S SHOWN ON THE PLANS S SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT W/LL REMAIN DORMANT (UNDISTURBED) OUTLET. TO DETAIN SEDIMENT-LADEN RUNOFF FROM SMALL DISTURBED AREAS LONG ENOUGH TO 1 11. All waste materials shall be taken to an approved waste area. Earth fill shall be inert materials only, free FOR LONGER THAN 30 DAYS PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT em O ALLOW THE MAJORITY OF THE SEDIMENT TO SETTLE OUT. USE BELOW DISTURBED AREAS WHERE THE D of roots, stumps, wood, rubbish, and other debris. S DORMANT FOR MORE THAN ONE YEAR. CONTRACTOR SHALL KEEP THE CONSTRUCTION ENTRANCE w/ WASH RACK 1P INLET PROTECTION 3.07 T TOTAL CON7RIBU77NG DRAINAGE AREA IS LESS 77-IAN 3 ACRES, WHERE THE SEDIMENT TRAP WILL BE o STORMWATER MANAGEMENT O OPERATIONAL AS LONG AS POSSIBLE. THE DIVERSIONS, SILT FENCING & SEDIMENT TRAP SHALL ALSO REMAIN IN SF SILT FENCE 3.05 1 USED NO LONGER THAN 18 MON774S, AND IT MAY BE CONSTRUCTED EITHER INDEPENDENTLY OR IN 1 12. Borrow orwaste areas are to be reclaimed within 7 days of completion per Zoning Ordinance section S STORMWATER RUNOFF WILL BE TREATED AND DETAINED ON -SITE THROUGH THE USE P PLACE AS LONG AS POSSIBLE AND SHALL ONLY BE REMOVED UPON 7HE COUNTY INSPECTOR 's APPROVAL. THE 13. All inert materials shall be transported in compliance with section 13 -301 of the Code of Albemarle. O DESIGNED TO TREAT &DETAIN RUNOFF FROM THE PROPOSED DEVELOPMENT AND COUNTY INSPECTOR SHALL ANY SEDIMENT BASIN BE REMOVED. CE C CONSTRUCTION ENTRANCE 3.02 S 3.18 OUTLET PROTECTION: 1 14. Borrow, fill or waste activity involving industrial-type power equipment shall be limited to the hours of D FUTURE DEVELOPMENT IMMEDIATELY UPLAND OF 77-iE PROJECT. SEE STORMWATER I 9. INSTALL THE INITIAL CONSTRUCTI0N MEASURES AS SHOWN ON THE PHASE ll EROSION CONTROL PLAN SHEETS OUTLETS OF PIPES OR PA VED CHANNEL SECTIONS TO PREVENT SCOUR A T STORMWA TAR OUTLETS, T MANAGEMENT PLAN B Y COLLINS ENGINEERING FOR ADDITIONAL DETAILS. CONSTRUCTED AS A FIRST STEP WI77 -1 ANY LAND DISTURBANCE ACTIVITY AND SHALL BE MADE FUNC770NAL BEFORE TO PROTECT THE OUTLET STRUCTURE, AND TO MINIMIZE THE POTENTIAL FOR DOWNSTREAM EROSION 1 to minimize any hazard to persons, physical damage to adjacent land and improvements, and damage to U UPSLOPE LAND DISTURBANCE TAKES PLACE. CD ' CHECK DAM 3.20 T BY REDUCING THE VELOCITY AND ENERGY OF CONCENTRATED STORMWATER FLOWS APPLICABLE TO t any public street because o slides, sinking, or collapse. M MAINTENANCE' 1 10. INSTALL THE REMAINING CURB AND GUTTER AND PAVEMENT ASSOCIATED WITH THE ROADS AND ALLEYS 16. The developer shall reserve the right to install, maintain, remove or convert to permanent stormwater i iN GENERAL, DURING CONS77?UC77ON THE RLD OR CONTRACTOR ON -SITE WILL CHECK ALL 1 11. INSTALL ANY REMAINING SANITARY SEWER. 3.19 RIPRAP: m management facilities where applicable all erosion control measures required by this plan regardless of the E EROSION AND SEDIMENT CONTROL MEASURES DAILY AND AFTER EACH SIGNIFICANT RAINFALL. 1 12. INSTALL ANY REMAINING EROSION CONTROL ITEMS AS SHOWN ON THE PHASE /I EROSION CONTROL PLAN. FD TEMPORARY FILL DIVERSION 3.10 A A PERMANENT, EROSION - RESISTANT GROUND COVER OF LARGE, LOOSE, ANGULAR STONE Wi7H FILTER s sale of an lot unit buildin or other onion of the ro ert M MONITORING REPORTS W/LL BE REQUIRED FROM THE RLD !F NEEDED. SPECIFIC ATTEN770N WtLL13. O ONCE ALL PHASES OF CONSTRUCTION ARE COMPLETE, THE SITE IS STABILIZED AND THE INSPECTOR HAS GIVEN FABRIC OR GRANULAR UNDERLINING. TO PROTECT THE SOIL FROM THE EROSIVE FORCES OF 1 1 Temporary stabilization shall be temporary seeding and mulching. Seeding is to be at Ibs /acre and in B BE GIVEN TO THE FOLLOWING ITEMS: APPROVAL, THE CONTRACTOR CAN REMOVE THE EROSION CONTROL MEASURES, INCLUDING SEDIMENT BASIN #2. NO - C CONCEN7RA TED RUNOFF, SLOW THE VELOCITY OF CONCENTRATED RUNOFF WHILE ENHANCING THE a the months of September to February to consist a So /So mix of Annual Ryegrass and Cereal Winter Rye or a. SEDIMENT BASINS AND /OR TRAPS WILL BE CLEANED AND MAINTAINED IN ACCORDANCE 1 ITEM SHALL BE REMOVED UNLESS 774E UPSTREAM AREAS ARE STABILIZED AND THE INSPECTOR GIVES PERMISSION. NON- COHESI VE SOILS USE WHEREVER SOiL AND WATER INTERFACE AND THE SOIL CONDITIONS, b in March and April to consist of Annual Rye, or Maythrough August to consist of German Millet. Straw � b. ALL GRAVEL OUTLETS WILL BE CHECKED REGULARLY FOR SEDIMENT BUILDUP THAT WILL HANDBOOK, REMOt/1NG ONLY WHEN APPROVED BY THE LOCAL PROGRAM ADMINISTRATOR /N ACCORDANCE NTH 1i-!E WATER TURBULENCE AND VELOCITY, EXPEC7ED VEGETA7VE COVER, ETC., ARE SUCH 7HAT THE SOIL m mulch is to be applied at 8olbs/zoosf. Alternatives are subject to approved by the County erosion control P PREVENT PROPER DRAINAGE. !F THE GRAVEL IS CLOGGED BY SEDIMENT, THE GRAVEL MLL VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. PS PS PERMANENT SEEDING 3.32 M MAY ERODE UNDER 174E DESIGN FLOW CONDl71ONS i inspector. B BE REMOVED AND CLEANED, OR IT WILL BE REPLACED. B 15. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL 18. Permanent stabilization shall be lime and fertilizer, permanent seeding, and mulch. Agricultural grade c c. A 3.31 TEMPORARY SEEDING,• l limestone shall be applied at golbs/zoo0sf, incorporated into the top 4 -6 inches of soil. Fertilizer shall be D DETERIORATION OF THE FABRIC AND REPAIRED AS REQUIRED. SEDIMENT SHALL BE T THE LOCAL PROGRAM ADMINIS7RA TOR. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE a TO TOPSOILING 3.30 a 774E ESTABLISHMENT OF A TEMPORARY VEGETATIVE COVER ON DISTURBED AREAS BY SEEDING WITH R applied at z000lbs /acre and consist of a 10 -20 -10 nutrient mix. Permanent seeding shall be applied at 7 REMOVED WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHED HALF WAY TO THE TOP OF D DiSPOS177ON OF TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND APPROPRIATE RAPIDLY GROWING ANNUAL PLANTS TO REDUCE EROS /ON AND SEDIMENTA 17074 BY l lgolbs / acre and consist of %Kentuck 1 or Tall Fescue and 0- % Perennial R e rass or Kentucky 7HE BARRIER. S SED /MEN TA 770N. C/P C CULVERT INLET PR07ECTION 3.08 O MORE THAN 30 DAYS TO REDUCE DAMAGE FROM SEDIMENT AND RUNOFF TO DOWNSTREAM OR u Bluegrass. Straw mulch is o be applied at 8olbs 1 sf. Alternatives are subject o v MAINTAINED. AREAS SHOULD BE FERTILIZED AND RESEEDED AS NEEDED. S SOIL DESCRIPTION (5 UNTIL PERMANENT VEGETA770N OR OTHER EROSION CONTROL MEASURES CAN BE ESTABLISHED. 1 1 Maintenance: All measures are to be inspected ever business da sand after each rainfall. An C CONTRACTOR ON -SITE. THE CONTRACTOR WILL BE DETERMINED AT THE TIME THE CONTRACT 2C - Albemarle fine sandy loam- 7X to 15X slopes. This soil is well drained & typically has DC DC DUST CONTROL 3.39 S 3.32 PERMANENT STABILIZATION: ° damage or clogging t0 structural measures is to be repair immediate) Silt traps are to be cleaned when I IS AWARDED.. UPON COMPLETION OF 774E PROJECT; THE OWNER LILL BE RESPONSIBLE FOR a moderately high Ksat value with a depth to water table more than 80 inches. The 774E EST H DY to achieve a good stand of grass. Silt fence and diversion dykes which are collecting sediment to half their TO REDUCE EROSION AND DECREASE SEDIMENT YIELD FROM DISTURBED AREAS TO PERMANENTLY height must be cleaned and repaired immediately. STABILIZE DISTURBED AREAS IN A MANNER 7HA T IS ECONOMICAL, ADAPTABLE TO SITE CONDITIONS, a - TEMPORARY SLOPE DRAIN 3.15 AND ALLOWS SELECTION OF 7HE MOST APPROPRIATE PLANT MATERIALS TO IMPROVE WILDLIFE 20. All temporary erosion and sediment control measures are to be removed within 3o days of final site HABITAT. TO ENHANCE NATURAL BEAUTY. UPON COMPLETION OF CONSTRUCT /ON AC771/I71ES, ALL stabilization, when measures are no longer needed, subject to approval by the County erasion control AREAS WILL RECEIVE A PERMANENT VEGETA 77VE COVER. inspector. SA SAFETY FENCE 3.01 3.36 SOIL STABILIZATION BLANKETS &MATTING: 21. This plan shall be void if the owner does not obtain a permit within 1 year of the date of approval. (Water 7HE INSTALLA7ON OF A PR07EC77VE COVERING (BLANKET) OR A SOiL STABILIZATON MAT ON A Protection Ordinance section 17- 204G.) PREPARED PLANTING AREA OF A STEEP SLOPE, CHANNEL OR SHORELINE. TO AID IN CONTROLLING 22. Permanent vegetation shall be installed on all denuded areas within nine (9) months after the date the E� TEMPORARY RIGHT -OF- WAY J. EROSION ON CRITICAL AREAS BY PROVIDING A M/CROCL/MATE WHICH PROTECTS YOUNG VEGETATION land disturbing activity commenced. (Water Protection Ordinance section 17- 207B) pp, pp, DI VERSION AND PROM07ES iTS ESTABLISHMENT. APPLIES ON SHORT, STEEP SLOPES WHERE EROSION HAZARD IS HIGH AND PLAN77NG IS LIKELY TO BE TOO SLOW IN PROVIDING ADEQUATE PR07ECTI VE COVER, 3.39 DUST CONTROL: REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBING, DEMOL177ON AND CONSTRUCTION AC77W TIES TO PREVENT SURFACE AND AIR MOVEMENT OF DUST FROM EXPOSED SOIL SURFACES AND REDUCE 174E PRESENCE OF AIRBORNE SUBSTANCES WHICH MAY PRESENT AIBEMAPAE COUNTY HEAL TH HAZARDS, TRAFFIC SAFETY PROBLEMS OR HARM ANIMAL OR PLANT LIFE. DUST CONTROL CONMUCTiClN ENTRANCE MEASURES SHALL BE EMPLOYED TO PREVENT SURFACE AND AIR MOVEMENT OF DUST DURING CONSTRUCTION. MEASURES EMPLOYED SHALL BE IN ACCORDANCE WITH 7HE VESCH. TO F" 7d IiI. I //_,� 29 -­ sla-M AWIFW TOP oOUItsE ` IX A.q . PAVEMENT TOTAL LBS 21A GENERAL SLOPE (3:1 OR LESS) PER ACRE DM SIDE ELEVATION AGGRECaTE BASE E)asTM�c KENTUCKY 31 FESCUE 128 LBS. RED TOP GRASS 2 LBS c�ouND 70' M. Ex. cults OR AWWLT MM wAa WCK EDGE OF PAV'T sx 1a'. EXWNG •-- 2X -.. I MUM MO M WIDTH ATAT 1RA"00 CeME DES014 WATER ELEVATION Is 4.a' PLAN VIEW MUST D aW FULL WUTH OF INGRESS AND EGRESS OPERKnON SET i i 2" WATER IA7H FROST . 12' MIN, PROOF HYDRANT 3' At3OVE GRADE AND dr ,+ OFF EDGE OF PAVEMENT, SECTION A -A NOTE: A MN+N" WATER TRAP OF 1" IS REQUIRED Wit i A MIMMUM WASH HOSE DIE. OF 1.S" 3 � PAYED SIP CWT &M Q sNE MM ATTACH FILTER FABFc TO STAKES OR POST EXTEND /T IN TO TRE` EXCA VA TED BA CKF/LLED COMPACTED )EN STAKE L POST 'TH = 5' MIN. SIL T FENCE D DWI THOUT WIRE SUPPORT) 3.0D NO SCALE . SET POSTS AND EXCA VA TE A 4"X4" TRENCH UPSLOPE ALONG THE LINE OF POS TS --`'_% ul ,:�� I - ,-_< I%_ C'� i - -11=I = FLOW i -1 4 SEASONAL NURSE CROP 20 LBS. SEASONAL NURSE CROP 150 LBS FEBRUARY 16 THROUGH APRIL ANNUAL RYE MAY 1 THROUGH AUGUST 15 FOXTAIL MILLET AUGUST 16 THROUGH OCTOBER ANNUAL RYE NOVEMBER THROUGH FEBRUARY 15 WINTER RYE NOTES: 1. LIME AND FERTILIZER NEEDS SHALL BE DETERMINED BY SOIL TESTS AND APPLIED IN ACCORDANCE WITH VESCH STD. 3.32. 2. SEEDINGS TO BE MULCHED IMMEDIATELY UPON COMPLETION OF SEED APPLICATION, IN ACCORDANCE W/ VESCH STD 3.35. PERMANENT SEEDING SCHEDULE NO SCALE (STD. & SPEC. \3.32 OF VIRGINIA EROSION & P S SEDIMENT CONTROL HANDBOOK, 3RD ED.) PLANTING DATES SPECIES RATE 50/50 MIX OF (LBS /ACRE) ANNUAL RYEGRASS SEPT 1 -FEB 15 (LOLIUM MULTI- FLORUM) 50 -100 & CEREAL (WINTER) RYE (SECALE CEREALE) FEB 16 -APR 20 ANNUAL RYEGRASS 60 -100 (LOLIUM MULTI- FLORUM) GERMAN MILLET MAY 1 -AUG 31 (SETARIA ITALICA) 50 SEEDINGS MADE IN FALL FOR WINTER COVER AND DURING HOT AND DRY SUMMER MONTHS SHALL BE MULCHED IMMEDIATELY UPON COMPLETION OF SEED APPLICATION WITH TACKIFIED STRAW, IN ACCORDANCE WITH VA E &S STD 3.35. TEMPORARY SEEDING SCHEDULE NO SCALE (STD. & SPEC. 3.31 OF VIRGINIA EROSION & TS SEDIMENT CONTROL HANDBOOK, 3RD ED.) 2. STAPLE WIRE FENCING TO THE POSTS. J. ATTACH THE FILTER FABRIC TO THE WIRE FENCE AND EXTEND l T INTO THE TRENCH. SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE HEAVY FLOWS ARE EXPECTED AND Vt'I-IERE AN Cr�,7ERFLOW CAPACITY IS�s NECESSARY TO PREVENT EXCESSIVE PONDING TI ARV V1:VrIJ 1L:r +7Tli V VTA.J E. GRAVEL SHALL BE VDOT /#S, ##357 OR ##5 COARSE AGGREGATE, Source: Va. DSWC 4. BACKFILL AND COMPACT THE EXCA VA TED SOIL. ` u�x //� - t ��____ �� 1 ;�� �_1000' 1 - '" �. / " �i I C. -1I1 -I I . -_I I I ' r- �' - l- - - - -- i - - SILT FENCE ( D (WITH WIRE SUPPORT ) (!ED NO SCALE EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. 111-38 SH, SLR Plate 3.07 -3 1992 GRA VEL CURB INLET SEDIMENT _ �' - , _ ' .- ---" _ ' '' - t (/ - / I ' GRAVEL FLTER 12. \ RUNOFF WATER -- \ f f ` ' SEDIMENT - CONCRETE GUTTER SPECIFIC APPLICATION WIRE MESH FUERED WATER \\- CL,IRB INLET 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 U3PIROTECTED AREAS. - GRAM, SHALL BE VDOT #3, #357 OR 5 COARSE AGGREGATE, Source: Va. DSWC 111-41 3.07 Plate 3.07 -6 / r- - - . / Y - - , . . / ' IhIhIIF . . . �■� - 11 I- 127 "01 - == o . - . � . lr • ♦. . ♦♦, I 1 ♦ . 1 ♦ ♦ • ♦. �I ♦ /I, /II I % %� /I / /I /l :71I1t! i ��II�i�1��HlU - tI1��1.11 ♦1 ♦ ♦ ♦1 ♦ ♦ /I ♦ ♦� /j ♦0 �� ♦1 ♦� ♦� ♦ % %ii�ii------ .:��i��i�r��.;��i /iiiii iiiiii %ii�'l Tod'...: I .. • I X11- [[- 1�!�0♦*♦*♦���. *'�'.•'• ♦•'•'.....,... "... s::'� ♦i �i. , �i vsiii�Rr �,�rrrs+ 1 f ff II iI iI L ♦ ♦ ♦ ♦ ♦ ♦i-'•'!3:.:c ::c • I r s • ♦ ♦ ♦��I� /I IFZ /` / / /I�r :.i_,7 I /ll�i' /Iil�flffss» i, . � � ♦1111 ♦ ♦�1� /j.♦•+♦�ii�s� /s��s . I , . 5:_ ����������i���I����-------- wwwwwwo �It�GGi1�/f���s� ��1 ♦1��� %� ♦�Iiiiiiiii�al �SS�� +�������j�4j��Ij�1j %% �� 1�IVr %IiNi� %!n; %f%�'s� iii r A I� r I II .1.� ♦`�`��1��j�1��iiiiiiisiii • ♦����j �i �I��If/ I /�Ill�t�<tl�i��l�i�,t //fffsa *� / / II 1� ♦���♦/�Iiiiii °i-- -- �SS������������� I / /►I��I��I���I��ItftafJffll jl!Iffff /��t•� / / ♦� Iiisii�WA�iiru I)( *. �IjIIffls•I jf j %�I�i~i1 II ��Iwiw��i�iii --- *A���j � iIjI111iiiiiiiN&,M= i fji�� 'i���i�::�� J1 =1t 11 11= 1 lw /. ,., �Ij111i�1 , %ii�i�i�u 11 I �i��j�liisiiiiiiii�,ii1� %i� lliiiiwii %iiii M. 1. hI�JLIi r - r it �n II r l l r ► : r 'r • r 'r r - inches thick without a risk of frequent flooding and ponding. 20C3 - Cullen clay loam- 7% to 159' slopes. This soil is well drained & typically has a very !ow to moderately high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically moderate. The surface layer is generally 0 -8 inches thick without a risk of frequent flooding and ponding. 2B - Albemarle fine sandy loom- 2% to 7X slopes. This soil is well drained & typically has a moderately high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically low. The surface layer is generally 0 -5 inches thick without a risk of frequent flooding and ponding. 22C3 - Culpeper clay loam- 7% to 159' slopes. This soil is well drained & typically has a very low to high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically moderate. 7h a surface layer is generally 0 -8 inches thick without a risk of frequent flooding and ponding. 19B - Cullen loam- 2X to 7X slopes. This soil is well drained & typically has a very low to high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically moderate. The surface layer is generally 0 -8 inches thick without a risk of frequent flooding and ponding. 21H - Culpeper fine sandy loam- 2% to 7% slopes. This soil is well drained & typically has a very low to high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically moderate. The surface layer is generally 0 -8 inches thick without a risk of frequent flooding and ponding. 39D - Hazel loam- 159' to 25X slopes. This soil is excessively drained & typically has a moderately high to high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically low. The surface layer is generally 0 -10 inches thick without a risk of frequent flooding and ponding. Reference: web soil survey online database, found at Ht tp: / /websoilsurvey. Nres. Usda. Gov /app /websoilsurvey. Aspx Stormwater Management Sfandard Dimensions MWITOTHMA .1 • • 1 a t R i .. 24 30 48 58 34 1.49 27 331/2 64 72 371/2 2.28 30 37 60 72 41 2.26 36 44 60 72 48 2.22 42 51 72 86 55 3.16 48 58 84 100 62 4.27 54 Fi61 /2 84 140 70112 4.20 60 72 96 114 76 5.48 66 80112 96 114 841/2 5.39 72 86 108 128 90 6.83 78 94112 126 147 98 112 8.97 84 100 126 147 104 8,80 90° Typ. _ ".' ' InletlArea -,, s - '\ (,' f/ ,x,, '11- �I- "` �1 " \ 1/ // r/ OutletlArea �+`� \� �t 1 it 7 1 �- 11 I 1...- .�._�--__ �_-u_--1-. A II It °t t _ ti--- - !i 1? 1 A 1 \A � / // I \ \\ \ I / j // ! \\ \ \1 ��� !/ I 11 i t,.r , - I - O tional �i- A L 6"o vent Frame & Grate Std. Cast in Top Slab Plan View Anti - Vortex Cap O.D. Anti -Vortex Cap 1. 11 1•-- -- Notch Diameter i l N It I I - r 1.7-11 E_ Z m I I Anti - Vortex Riser LID. 2" , Anti -Vortex Riser O.D. tote: I -` v and Riser) Manufactured in (1,) Anti-Vortex device (Gap a ) accordance with ASTM G478. (2.) Dimensions subject to permissible variations of ASTM G478. (3.) Inlet area (Area between device I.D. and riser O.D.) is greater than outlet area. {Area of riser LD.) (4.) Slab reinforcement to be ASTM A615 #f4 bars @ 8" E.W. . Circumferential reinforcement to be A� = 1' C 0.150 2x 6 W2.5 x `<N2.5 WMF minimum. Material properties: f'c = 4,000 p.s.i., fy = 60,000 p.s.i. Concrete cover ,over f. 4 ksi, Concrete cover over reinforcement (CCOR) = 1" unless noted. (5.) DI -1 Frame & Grate Is available for 48" I.D. risers and larger. TITLE Precast Anti- Vertex Device (Cap and Risen + Section A -A -Flo scale- AII dimensions subject to allowable specification tolerances. . STATE SECTIO%PAOE DATE 2001 VA 14,1 03 -15 -06 Hal"1,a�(M CURB INLET Z<7 - FIGIiRE 3,01 - la Honitugeneous Etnbat&inents fv1 w5'eepa,c,,e Controls Rornogeneous fill 4' rifin `T l --lut off tr�nafi- , teelow mit,3 e mareri Suil or rock - TYPICAL HOMOGENEOUS EB,�NKMEIT r. ....w` 00,3r filter rI sI :t F' , rarT�t�d ter t1r '1� aroiuN slots - � T c�undatioii drain FOUNDATiON DRAIN 11 c: \3._01 -10 Tr nsit-on fill' ,,Rook or gravel '- Ranket droin BLANKET DRAIN rnnsy drain r, Sarni, or rock drain milt r Rock or gravel ,Atk ttrG /. , "I 11fI ,� , �Iransltion filter Tronsition filter CHIMNEY DRAIN TOE DRAIN ISiWia.'r','8C,� i� ?!Sm -17 ',eil�i i(`lil ,J/Ivlu(.fi 3.01 - 3 Technical Bulletin T Minimum Standard 3.02 ter` L/2" kne plater) hook attr-ObV4 wi ; /a' .t6 ter 8 -1 /0' slice, hraiax rr. W.ZW_ �i; -:-A \-` Isometric 1/4' IMPFE pdate t - .. F _.-, r . � . .�-­' Z A4 � ®., HiiPE a a^siict�,lr\cI leaf#10 with e E i Z-11/W" h4lea and i74` ptate n�snuftatured >ar Piast4a + Sa•1abisrm Ina. or equal .:�_ ..11, a,s+Wl� mth ort�aj plate ar . .. 1T aid rvna. �G Section m.e.u>&t�t:ursd< WY 41St to t�ola#:�aans Iz��, wr mqus1 BfII" slice. �4 - - I �" i -�s�T std, -s I 0 I I I I 1 , IX r__ - -- - - - - --I - Dales I -- - - - --- _�----------- - - - - -- ariflu4 leva .ion ariflae BM DEBRIS CAGE SOLUTION' Box f�V 0. INC- -M-ak /A sWW.P 0ik -30kkW .4aml TTB7 3 FILTER FABRIC ENTRENCHED 6" COMPACTED SOIL 3' MINIMUM _::7, I-"_ 111001 111111 - _____ 3s III I!I II1111111111- _ ;_ 111- _ __ � 11 111 I I 1 111 24„ _- =- 1 -1 i I I I 1 =1 11 111, I I I- - -I I F_ E I I 11=1 I I I I II -1 __ _ _ - :: -- , � - -1 I = 11� I IC III �I 11 I 1 III ! ! 1- -- I I .._I I Im- --1 I 1- ..__MI I I - -1 I 1 I; ICI I I_- _I !' � I� t 8' D TEMPORARY DI�TERSION Sediment Basin Design #2 - tffiPp.1 °i1 5P14LtlY41' ds!M �,?' a4mgw( 2'rittHQtrr J, SPILLWAY drainage area (acres) 6.53 DESI" HIGH WAT R I basin votumess. (ustrig 2' contour internals) (25-'fk. STORM E'r elevation (ft) contour area lsf) volirre(cy) - -_�_- _ -- - - - - -- 414_.; 1;10?.0 0 I I _ %T._ _ . . Mim CREST 416.00 1792.0 109 - E � ,�,NG 41 _fj 5 0 26B ._ ,_. , . t�CL W..,dR,�3E :. :.:'.: 4uu.�.,'} b401.0 JtJ+'r . 421-2 .00 4362.0 9` 5 SE 4MF-NT CLL4 0C ff #-"Owl f 42#,4.()0 5424_i0 1347 C 3. TO GEREEDJUD v�et storage wet sbrage required (cy) (67'11DA) 438 design high inter 422,50 de>«watering orifice ele_ -&bon (ft) 419.06 top of dam (ft) 424.00 ;net storage pro \ded at this elevation (cy ) 438 top width of da:m (ft) 6.0 availabte vokirre before cleanout (cy;) (.04 *DA) 22:2 bottom of basin (f) 414.0 cicarm ut elevation (ft) 417.36 approx bottom dimensions. 56x32' distance from cL-anout to orifice (fit) (° V) 1.7 upstream face slope: 2:1 max dov i&eamface slope_ 3.1 rtin. dry storage: dry storage required (cy) (67x0£) 438 baffles: YES principle spiitviey crest (fit 421.60 length of flotp<: L. (ft) 60 dry storage provided at this elevation, (cy) 448 effective v.idth, VVe (ft) 82.3 diareter of de watering orifice (in) 6 -0 L. I We (baffles required if { 2) 0,6 diameter of flexible tubing (in) (ohfiir_e +Z') g -O colars: YES runoff depth of venter at spiltomyr crest (fl) 7.r0 C (use 0 -45 for Mare ear-h) 0 -45 stripe of .upstream face (Z.1) 2 tc (gin) 11 slope of barrel (Sb) 0.50 °'0 12yr 4 -0 Q2vr 11.20 length of barrel in saturated zone (Ls) 40 125yr 6 -7 Q25yr 21.7 number Collars required' 2 dimension of collars 4.3'x43° principle spilh.y: avaitabte head (ft) 0.00 etTergency spin y= YES diameter riser (in) 30 required cawAyr (025 -C1p) (cfs} 0.0 spillway capacity, Op (cfs) 29.0 bottom v.tdth (ft) 10 diamter trash rack (iri) 42 siope of exist channel (ftfft) 1% barrel Length (ft) 0 minimun length of exit channel (ft) 6 head on barrel through err - banker -tit (ft) 3.5 crest of sptlWay (ft) 422.5 diameter of barrel (in) 24 SEDIMENT BASIN SB -,2 674 TOPSOIL EXISTING GROUND 1VTS - 6 42" 1. D. 15" HIGH TOP OF DAM ELEV. = 424.00' I TEMP. CMP TRASH RACK DEVICE 25 YR. STORM 1.0' MIN . _ "```.". - EMERGENCY SPILL WAY 1 -; - 111- ELEV. = 422.5' _ ., CREST ELEV. = 422.5 C___ � RISER TOP ELEV. = 421.5' 1.0 MIN.. » 16 . -� -; 30 DIE. CMP RISER I nc. _ DRY VOLUME ELEV REQUIRED = 421.45'f;;, ` 1' SCARIFIED KEY FOR 6" DiE. DEWATERING SOIL COHESION I t± ; i ........... ; DEV1 CE : >: » >:: >:::: >:: »::_::_: >. IN V. OUT= 418.8 n UPSTREAM TOE OF DAM ....., XISTING GROUN ELEV = 414 00 �x MIN. 30" COMPACTED .` SOIL OR A GGREGA TE OVER ` "`? "i OUTLET PROTECTION BASE PLATE VDOT CLASS H, EC -1 BOTTOM OF BASIN 5X5',014" THICK GALV CLAY ORED DAM RIPRAP w/ ELEV. = 414.00 STEEL BASE PLATE KEYED INTO THE GEOTEXTILE FABRIC EXISTING GROUND UNOERLAYMENT IN IN = 419.0' 24" CMP (2) 4.3 X 4.3' GAL V. STEEL LEN GTH =40' ANTI -SEEP COLLARS SLOPE =0.5% �T-oF �' f o scoT x. cor�.ixsz U No. 35791 ,2� V-6 Oiv, � ��• o IONAL - Z O t a W Z O �, R •� U) z 0 ti LU U) W 1W UJ a H Z Z W W 2: Z Q 0 O Z O V a V H D W V: 0 o oG Z O W D_ Z > � g w a- Ln Ln W ,aC Ln Ln W T-1 71 O o 1-4 V-4 d z it W W Z 0 z W Ln z J 0 0 0 C 0 M C 0 0 c 0 Z 3 0) 0 0- X 0 a) 0 r 3 C" a N C 0 U F, 0) C 0 0 0 C a C n 0 W 0 Ll ., r_ 0 0 0 a 0 0 c 11 a 0 3 0 c 0 a m .. a C it O N O C. D CL >1 a 0 a Q W n 0 C v C m v C a W O CL S `0 a? O C C V 0 0 a 0 CL 0 " 0 n 0 c T a E a C a D K Y .d A Z Z Z J J D 0 T 0 0- 0 n. > 0 0 X 0 4) L a C acs C 0 v v 1 v_ U 0 rn N a C a 9, C a 0- 0 W IiI. I //_,� 29 -­ sla-M AWIFW TOP oOUItsE ` IX A.q . PAVEMENT TOTAL LBS 21A GENERAL SLOPE (3:1 OR LESS) PER ACRE DM SIDE ELEVATION AGGRECaTE BASE E)asTM�c KENTUCKY 31 FESCUE 128 LBS. RED TOP GRASS 2 LBS c�ouND 70' M. Ex. cults OR AWWLT MM wAa WCK EDGE OF PAV'T sx 1a'. EXWNG •-- 2X -.. I MUM MO M WIDTH ATAT 1RA"00 CeME DES014 WATER ELEVATION Is 4.a' PLAN VIEW MUST D aW FULL WUTH OF INGRESS AND EGRESS OPERKnON SET i i 2" WATER IA7H FROST . 12' MIN, PROOF HYDRANT 3' At3OVE GRADE AND dr ,+ OFF EDGE OF PAVEMENT, SECTION A -A NOTE: A MN+N" WATER TRAP OF 1" IS REQUIRED Wit i A MIMMUM WASH HOSE DIE. OF 1.S" 3 � PAYED SIP CWT &M Q sNE MM ATTACH FILTER FABFc TO STAKES OR POST EXTEND /T IN TO TRE` EXCA VA TED BA CKF/LLED COMPACTED )EN STAKE L POST 'TH = 5' MIN. SIL T FENCE D DWI THOUT WIRE SUPPORT) 3.0D NO SCALE . SET POSTS AND EXCA VA TE A 4"X4" TRENCH UPSLOPE ALONG THE LINE OF POS TS --`'_% ul ,:�� I - ,-_< I%_ C'� i - -11=I = FLOW i -1 4 SEASONAL NURSE CROP 20 LBS. SEASONAL NURSE CROP 150 LBS FEBRUARY 16 THROUGH APRIL ANNUAL RYE MAY 1 THROUGH AUGUST 15 FOXTAIL MILLET AUGUST 16 THROUGH OCTOBER ANNUAL RYE NOVEMBER THROUGH FEBRUARY 15 WINTER RYE NOTES: 1. LIME AND FERTILIZER NEEDS SHALL BE DETERMINED BY SOIL TESTS AND APPLIED IN ACCORDANCE WITH VESCH STD. 3.32. 2. SEEDINGS TO BE MULCHED IMMEDIATELY UPON COMPLETION OF SEED APPLICATION, IN ACCORDANCE W/ VESCH STD 3.35. PERMANENT SEEDING SCHEDULE NO SCALE (STD. & SPEC. \3.32 OF VIRGINIA EROSION & P S SEDIMENT CONTROL HANDBOOK, 3RD ED.) PLANTING DATES SPECIES RATE 50/50 MIX OF (LBS /ACRE) ANNUAL RYEGRASS SEPT 1 -FEB 15 (LOLIUM MULTI- FLORUM) 50 -100 & CEREAL (WINTER) RYE (SECALE CEREALE) FEB 16 -APR 20 ANNUAL RYEGRASS 60 -100 (LOLIUM MULTI- FLORUM) GERMAN MILLET MAY 1 -AUG 31 (SETARIA ITALICA) 50 SEEDINGS MADE IN FALL FOR WINTER COVER AND DURING HOT AND DRY SUMMER MONTHS SHALL BE MULCHED IMMEDIATELY UPON COMPLETION OF SEED APPLICATION WITH TACKIFIED STRAW, IN ACCORDANCE WITH VA E &S STD 3.35. TEMPORARY SEEDING SCHEDULE NO SCALE (STD. & SPEC. 3.31 OF VIRGINIA EROSION & TS SEDIMENT CONTROL HANDBOOK, 3RD ED.) 2. STAPLE WIRE FENCING TO THE POSTS. J. ATTACH THE FILTER FABRIC TO THE WIRE FENCE AND EXTEND l T INTO THE TRENCH. SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE HEAVY FLOWS ARE EXPECTED AND Vt'I-IERE AN Cr�,7ERFLOW CAPACITY IS�s NECESSARY TO PREVENT EXCESSIVE PONDING TI ARV V1:VrIJ 1L:r +7Tli V VTA.J E. GRAVEL SHALL BE VDOT /#S, ##357 OR ##5 COARSE AGGREGATE, Source: Va. DSWC 4. BACKFILL AND COMPACT THE EXCA VA TED SOIL. ` u�x //� - t ��____ �� 1 ;�� �_1000' 1 - '" �. / " �i I C. -1I1 -I I . -_I I I ' r- �' - l- - - - -- i - - SILT FENCE ( D (WITH WIRE SUPPORT ) (!ED NO SCALE EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. 111-38 SH, SLR Plate 3.07 -3 1992 GRA VEL CURB INLET SEDIMENT _ �' - , _ ' .- ---" _ ' '' - t (/ - / I ' GRAVEL FLTER 12. \ RUNOFF WATER -- \ f f ` ' SEDIMENT - CONCRETE GUTTER SPECIFIC APPLICATION WIRE MESH FUERED WATER \\- CL,IRB INLET 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 U3PIROTECTED AREAS. - GRAM, SHALL BE VDOT #3, #357 OR 5 COARSE AGGREGATE, Source: Va. DSWC 111-41 3.07 Plate 3.07 -6 / r- - - . / Y - - , . . / ' IhIhIIF . . . �■� - 11 I- 127 "01 - == o . - . � . lr • ♦. . ♦♦, I 1 ♦ . 1 ♦ ♦ • ♦. �I ♦ /I, /II I % %� /I / /I /l :71I1t! i ��II�i�1��HlU - tI1��1.11 ♦1 ♦ ♦ ♦1 ♦ ♦ /I ♦ ♦� /j ♦0 �� ♦1 ♦� ♦� ♦ % %ii�ii------ .:��i��i�r��.;��i /iiiii iiiiii %ii�'l Tod'...: I .. • I X11- [[- 1�!�0♦*♦*♦���. *'�'.•'• ♦•'•'.....,... "... s::'� ♦i �i. , �i vsiii�Rr �,�rrrs+ 1 f ff II iI iI L ♦ ♦ ♦ ♦ ♦ ♦i-'•'!3:.:c ::c • I r s • ♦ ♦ ♦��I� /I IFZ /` / / /I�r :.i_,7 I /ll�i' /Iil�flffss» i, . � � ♦1111 ♦ ♦�1� /j.♦•+♦�ii�s� /s��s . I , . 5:_ ����������i���I����-------- wwwwwwo �It�GGi1�/f���s� ��1 ♦1��� %� ♦�Iiiiiiiii�al �SS�� +�������j�4j��Ij�1j %% �� 1�IVr %IiNi� %!n; %f%�'s� iii r A I� r I II .1.� ♦`�`��1��j�1��iiiiiiisiii • ♦����j �i �I��If/ I /�Ill�t�<tl�i��l�i�,t //fffsa *� / / II 1� ♦���♦/�Iiiiii °i-- -- �SS������������� I / /►I��I��I���I��ItftafJffll jl!Iffff /��t•� / / ♦� Iiisii�WA�iiru I)( *. �IjIIffls•I jf j %�I�i~i1 II ��Iwiw��i�iii --- *A���j � iIjI111iiiiiiiN&,M= i fji�� 'i���i�::�� J1 =1t 11 11= 1 lw /. ,., �Ij111i�1 , %ii�i�i�u 11 I �i��j�liisiiiiiiii�,ii1� %i� lliiiiwii %iiii M. 1. hI�JLIi r - r it �n II r l l r ► : r 'r • r 'r r - inches thick without a risk of frequent flooding and ponding. 20C3 - Cullen clay loam- 7% to 159' slopes. This soil is well drained & typically has a very !ow to moderately high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically moderate. The surface layer is generally 0 -8 inches thick without a risk of frequent flooding and ponding. 2B - Albemarle fine sandy loom- 2% to 7X slopes. This soil is well drained & typically has a moderately high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically low. The surface layer is generally 0 -5 inches thick without a risk of frequent flooding and ponding. 22C3 - Culpeper clay loam- 7% to 159' slopes. This soil is well drained & typically has a very low to high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically moderate. 7h a surface layer is generally 0 -8 inches thick without a risk of frequent flooding and ponding. 19B - Cullen loam- 2X to 7X slopes. This soil is well drained & typically has a very low to high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically moderate. The surface layer is generally 0 -8 inches thick without a risk of frequent flooding and ponding. 21H - Culpeper fine sandy loam- 2% to 7% slopes. This soil is well drained & typically has a very low to high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically moderate. The surface layer is generally 0 -8 inches thick without a risk of frequent flooding and ponding. 39D - Hazel loam- 159' to 25X slopes. This soil is excessively drained & typically has a moderately high to high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically low. The surface layer is generally 0 -10 inches thick without a risk of frequent flooding and ponding. Reference: web soil survey online database, found at Ht tp: / /websoilsurvey. Nres. Usda. Gov /app /websoilsurvey. Aspx Stormwater Management Sfandard Dimensions MWITOTHMA .1 • • 1 a t R i .. 24 30 48 58 34 1.49 27 331/2 64 72 371/2 2.28 30 37 60 72 41 2.26 36 44 60 72 48 2.22 42 51 72 86 55 3.16 48 58 84 100 62 4.27 54 Fi61 /2 84 140 70112 4.20 60 72 96 114 76 5.48 66 80112 96 114 841/2 5.39 72 86 108 128 90 6.83 78 94112 126 147 98 112 8.97 84 100 126 147 104 8,80 90° Typ. _ ".' ' InletlArea -,, s - '\ (,' f/ ,x,, '11- �I- "` �1 " \ 1/ // r/ OutletlArea �+`� \� �t 1 it 7 1 �- 11 I 1...- .�._�--__ �_-u_--1-. A II It °t t _ ti--- - !i 1? 1 A 1 \A � / // I \ \\ \ I / j // ! \\ \ \1 ��� !/ I 11 i t,.r , - I - O tional �i- A L 6"o vent Frame & Grate Std. Cast in Top Slab Plan View Anti - Vortex Cap O.D. Anti -Vortex Cap 1. 11 1•-- -- Notch Diameter i l N It I I - r 1.7-11 E_ Z m I I Anti - Vortex Riser LID. 2" , Anti -Vortex Riser O.D. tote: I -` v and Riser) Manufactured in (1,) Anti-Vortex device (Gap a ) accordance with ASTM G478. (2.) Dimensions subject to permissible variations of ASTM G478. (3.) Inlet area (Area between device I.D. and riser O.D.) is greater than outlet area. {Area of riser LD.) (4.) Slab reinforcement to be ASTM A615 #f4 bars @ 8" E.W. . Circumferential reinforcement to be A� = 1' C 0.150 2x 6 W2.5 x `<N2.5 WMF minimum. Material properties: f'c = 4,000 p.s.i., fy = 60,000 p.s.i. Concrete cover ,over f. 4 ksi, Concrete cover over reinforcement (CCOR) = 1" unless noted. (5.) DI -1 Frame & Grate Is available for 48" I.D. risers and larger. TITLE Precast Anti- Vertex Device (Cap and Risen + Section A -A -Flo scale- AII dimensions subject to allowable specification tolerances. . STATE SECTIO%PAOE DATE 2001 VA 14,1 03 -15 -06 Hal"1,a�(M CURB INLET Z<7 - FIGIiRE 3,01 - la Honitugeneous Etnbat&inents fv1 w5'eepa,c,,e Controls Rornogeneous fill 4' rifin `T l --lut off tr�nafi- , teelow mit,3 e mareri Suil or rock - TYPICAL HOMOGENEOUS EB,�NKMEIT r. ....w` 00,3r filter rI sI :t F' , rarT�t�d ter t1r '1� aroiuN slots - � T c�undatioii drain FOUNDATiON DRAIN 11 c: \3._01 -10 Tr nsit-on fill' ,,Rook or gravel '- Ranket droin BLANKET DRAIN rnnsy drain r, Sarni, or rock drain milt r Rock or gravel ,Atk ttrG /. , "I 11fI ,� , �Iransltion filter Tronsition filter CHIMNEY DRAIN TOE DRAIN ISiWia.'r','8C,� i� ?!Sm -17 ',eil�i i(`lil ,J/Ivlu(.fi 3.01 - 3 Technical Bulletin T Minimum Standard 3.02 ter` L/2" kne plater) hook attr-ObV4 wi ; /a' .t6 ter 8 -1 /0' slice, hraiax rr. W.ZW_ �i; -:-A \-` Isometric 1/4' IMPFE pdate t - .. F _.-, r . � . .�-­' Z A4 � ®., HiiPE a a^siict�,lr\cI leaf#10 with e E i Z-11/W" h4lea and i74` ptate n�snuftatured >ar Piast4a + Sa•1abisrm Ina. or equal .:�_ ..11, a,s+Wl� mth ort�aj plate ar . .. 1T aid rvna. �G Section m.e.u>&t�t:ursd< WY 41St to t�ola#:�aans Iz��, wr mqus1 BfII" slice. �4 - - I �" i -�s�T std, -s I 0 I I I I 1 , IX r__ - -- - - - - --I - Dales I -- - - - --- _�----------- - - - - -- ariflu4 leva .ion ariflae BM DEBRIS CAGE SOLUTION' Box f�V 0. INC- -M-ak /A sWW.P 0ik -30kkW .4aml TTB7 3 FILTER FABRIC ENTRENCHED 6" COMPACTED SOIL 3' MINIMUM _::7, I-"_ 111001 111111 - _____ 3s III I!I II1111111111- _ ;_ 111- _ __ � 11 111 I I 1 111 24„ _- =- 1 -1 i I I I 1 =1 11 111, I I I- - -I I F_ E I I 11=1 I I I I II -1 __ _ _ - :: -- , � - -1 I = 11� I IC III �I 11 I 1 III ! ! 1- -- I I .._I I Im- --1 I 1- ..__MI I I - -1 I 1 I; ICI I I_- _I !' � I� t 8' D TEMPORARY DI�TERSION Sediment Basin Design #2 - tffiPp.1 °i1 5P14LtlY41' ds!M �,?' a4mgw( 2'rittHQtrr J, SPILLWAY drainage area (acres) 6.53 DESI" HIGH WAT R I basin votumess. (ustrig 2' contour internals) (25-'fk. STORM E'r elevation (ft) contour area lsf) volirre(cy) - -_�_- _ -- - - - - -- 414_.; 1;10?.0 0 I I _ %T._ _ . . Mim CREST 416.00 1792.0 109 - E � ,�,NG 41 _fj 5 0 26B ._ ,_. , . t�CL W..,dR,�3E :. :.:'.: 4uu.�.,'} b401.0 JtJ+'r . 421-2 .00 4362.0 9` 5 SE 4MF-NT CLL4 0C ff #-"Owl f 42#,4.()0 5424_i0 1347 C 3. TO GEREEDJUD v�et storage wet sbrage required (cy) (67'11DA) 438 design high inter 422,50 de>«watering orifice ele_ -&bon (ft) 419.06 top of dam (ft) 424.00 ;net storage pro \ded at this elevation (cy ) 438 top width of da:m (ft) 6.0 availabte vokirre before cleanout (cy;) (.04 *DA) 22:2 bottom of basin (f) 414.0 cicarm ut elevation (ft) 417.36 approx bottom dimensions. 56x32' distance from cL-anout to orifice (fit) (° V) 1.7 upstream face slope: 2:1 max dov i&eamface slope_ 3.1 rtin. dry storage: dry storage required (cy) (67x0£) 438 baffles: YES principle spiitviey crest (fit 421.60 length of flotp<: L. (ft) 60 dry storage provided at this elevation, (cy) 448 effective v.idth, VVe (ft) 82.3 diareter of de watering orifice (in) 6 -0 L. I We (baffles required if { 2) 0,6 diameter of flexible tubing (in) (ohfiir_e +Z') g -O colars: YES runoff depth of venter at spiltomyr crest (fl) 7.r0 C (use 0 -45 for Mare ear-h) 0 -45 stripe of .upstream face (Z.1) 2 tc (gin) 11 slope of barrel (Sb) 0.50 °'0 12yr 4 -0 Q2vr 11.20 length of barrel in saturated zone (Ls) 40 125yr 6 -7 Q25yr 21.7 number Collars required' 2 dimension of collars 4.3'x43° principle spilh.y: avaitabte head (ft) 0.00 etTergency spin y= YES diameter riser (in) 30 required cawAyr (025 -C1p) (cfs} 0.0 spillway capacity, Op (cfs) 29.0 bottom v.tdth (ft) 10 diamter trash rack (iri) 42 siope of exist channel (ftfft) 1% barrel Length (ft) 0 minimun length of exit channel (ft) 6 head on barrel through err - banker -tit (ft) 3.5 crest of sptlWay (ft) 422.5 diameter of barrel (in) 24 SEDIMENT BASIN SB -,2 674 TOPSOIL EXISTING GROUND 1VTS - 6 42" 1. D. 15" HIGH TOP OF DAM ELEV. = 424.00' I TEMP. CMP TRASH RACK DEVICE 25 YR. STORM 1.0' MIN . _ "```.". - EMERGENCY SPILL WAY 1 -; - 111- ELEV. = 422.5' _ ., CREST ELEV. = 422.5 C___ � RISER TOP ELEV. = 421.5' 1.0 MIN.. » 16 . -� -; 30 DIE. CMP RISER I nc. _ DRY VOLUME ELEV REQUIRED = 421.45'f;;, ` 1' SCARIFIED KEY FOR 6" DiE. DEWATERING SOIL COHESION I t± ; i ........... ; DEV1 CE : >: » >:: >:::: >:: »::_::_: >. IN V. OUT= 418.8 n UPSTREAM TOE OF DAM ....., XISTING GROUN ELEV = 414 00 �x MIN. 30" COMPACTED .` SOIL OR A GGREGA TE OVER ` "`? "i OUTLET PROTECTION BASE PLATE VDOT CLASS H, EC -1 BOTTOM OF BASIN 5X5',014" THICK GALV CLAY ORED DAM RIPRAP w/ ELEV. = 414.00 STEEL BASE PLATE KEYED INTO THE GEOTEXTILE FABRIC EXISTING GROUND UNOERLAYMENT IN IN = 419.0' 24" CMP (2) 4.3 X 4.3' GAL V. STEEL LEN GTH =40' ANTI -SEEP COLLARS SLOPE =0.5% �T-oF �' f o scoT x. cor�.ixsz U No. 35791 ,2� V-6 Oiv, � ��• o IONAL - Z O t a W Z O �, R •� U) z 0 ti LU U) W 1W UJ a H Z Z W W 2: Z Q 0 O Z O V a V H D W V: 0 o oG Z O W D_ Z > � g w a- Ln Ln W ,aC Ln Ln W T-1 71 O o 1-4 V-4 d z it W W Z 0 z W Ln z J 0 0 0 C 0 M C 0 0 c 0 Z 3 0) 0 0- X 0 a) 0 r 3 C" a N C 0 U F, 0) C 0 0 0 C a C n 0 W 0 Ll ., r_ 0 0 0 a 0 0 c 11 a 0 3 0 c 0 a m .. a C it O N O C. D CL >1 a 0 a Q W n 0 C v C m v C a W O CL S `0 a? O C C V 0 0 a 0 CL 0 " 0 n 0 c T a E a C a D K Y .d A Z Z Z J J D 0 T 0 0- 0 n. > 0 0 X 0 4) L a C acs C 0 v v 1 v_ U 0 rn N a C a 9, C a 0- 0 W ATTACH FILTER FABFc TO STAKES OR POST EXTEND /T IN TO TRE` EXCA VA TED BA CKF/LLED COMPACTED )EN STAKE L POST 'TH = 5' MIN. SIL T FENCE D DWI THOUT WIRE SUPPORT) 3.0D NO SCALE . SET POSTS AND EXCA VA TE A 4"X4" TRENCH UPSLOPE ALONG THE LINE OF POS TS --`'_% ul ,:�� I - ,-_< I%_ C'� i - -11=I = FLOW i -1 4 SEASONAL NURSE CROP 20 LBS. SEASONAL NURSE CROP 150 LBS FEBRUARY 16 THROUGH APRIL ANNUAL RYE MAY 1 THROUGH AUGUST 15 FOXTAIL MILLET AUGUST 16 THROUGH OCTOBER ANNUAL RYE NOVEMBER THROUGH FEBRUARY 15 WINTER RYE NOTES: 1. LIME AND FERTILIZER NEEDS SHALL BE DETERMINED BY SOIL TESTS AND APPLIED IN ACCORDANCE WITH VESCH STD. 3.32. 2. SEEDINGS TO BE MULCHED IMMEDIATELY UPON COMPLETION OF SEED APPLICATION, IN ACCORDANCE W/ VESCH STD 3.35. PERMANENT SEEDING SCHEDULE NO SCALE (STD. & SPEC. \3.32 OF VIRGINIA EROSION & P S SEDIMENT CONTROL HANDBOOK, 3RD ED.) PLANTING DATES SPECIES RATE 50/50 MIX OF (LBS /ACRE) ANNUAL RYEGRASS SEPT 1 -FEB 15 (LOLIUM MULTI- FLORUM) 50 -100 & CEREAL (WINTER) RYE (SECALE CEREALE) FEB 16 -APR 20 ANNUAL RYEGRASS 60 -100 (LOLIUM MULTI- FLORUM) GERMAN MILLET MAY 1 -AUG 31 (SETARIA ITALICA) 50 SEEDINGS MADE IN FALL FOR WINTER COVER AND DURING HOT AND DRY SUMMER MONTHS SHALL BE MULCHED IMMEDIATELY UPON COMPLETION OF SEED APPLICATION WITH TACKIFIED STRAW, IN ACCORDANCE WITH VA E &S STD 3.35. TEMPORARY SEEDING SCHEDULE NO SCALE (STD. & SPEC. 3.31 OF VIRGINIA EROSION & TS SEDIMENT CONTROL HANDBOOK, 3RD ED.) 2. STAPLE WIRE FENCING TO THE POSTS. J. ATTACH THE FILTER FABRIC TO THE WIRE FENCE AND EXTEND l T INTO THE TRENCH. SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE HEAVY FLOWS ARE EXPECTED AND Vt'I-IERE AN Cr�,7ERFLOW CAPACITY IS�s NECESSARY TO PREVENT EXCESSIVE PONDING TI ARV V1:VrIJ 1L:r +7Tli V VTA.J E. GRAVEL SHALL BE VDOT /#S, ##357 OR ##5 COARSE AGGREGATE, Source: Va. DSWC 4. BACKFILL AND COMPACT THE EXCA VA TED SOIL. ` u�x //� - t ��____ �� 1 ;�� �_1000' 1 - '" �. / " �i I C. -1I1 -I I . -_I I I ' r- �' - l- - - - -- i - - SILT FENCE ( D (WITH WIRE SUPPORT ) (!ED NO SCALE EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. 111-38 SH, SLR Plate 3.07 -3 1992 GRA VEL CURB INLET SEDIMENT _ �' - , _ ' .- ---" _ ' '' - t (/ - / I ' GRAVEL FLTER 12. \ RUNOFF WATER -- \ f f ` ' SEDIMENT - CONCRETE GUTTER SPECIFIC APPLICATION WIRE MESH FUERED WATER \\- CL,IRB INLET 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 U3PIROTECTED AREAS. - GRAM, SHALL BE VDOT #3, #357 OR 5 COARSE AGGREGATE, Source: Va. DSWC 111-41 3.07 Plate 3.07 -6 / r- - - . / Y - - , . . / ' IhIhIIF . . . �■� - 11 I- 127 "01 - == o . - . � . lr • ♦. . ♦♦, I 1 ♦ . 1 ♦ ♦ • ♦. �I ♦ /I, /II I % %� /I / /I /l :71I1t! i ��II�i�1��HlU - tI1��1.11 ♦1 ♦ ♦ ♦1 ♦ ♦ /I ♦ ♦� /j ♦0 �� ♦1 ♦� ♦� ♦ % %ii�ii------ .:��i��i�r��.;��i /iiiii iiiiii %ii�'l Tod'...: I .. • I X11- [[- 1�!�0♦*♦*♦���. *'�'.•'• ♦•'•'.....,... "... s::'� ♦i �i. , �i vsiii�Rr �,�rrrs+ 1 f ff II iI iI L ♦ ♦ ♦ ♦ ♦ ♦i-'•'!3:.:c ::c • I r s • ♦ ♦ ♦��I� /I IFZ /` / / /I�r :.i_,7 I /ll�i' /Iil�flffss» i, . � � ♦1111 ♦ ♦�1� /j.♦•+♦�ii�s� /s��s . I , . 5:_ ����������i���I����-------- wwwwwwo �It�GGi1�/f���s� ��1 ♦1��� %� ♦�Iiiiiiiii�al �SS�� +�������j�4j��Ij�1j %% �� 1�IVr %IiNi� %!n; %f%�'s� iii r A I� r I II .1.� ♦`�`��1��j�1��iiiiiiisiii • ♦����j �i �I��If/ I /�Ill�t�<tl�i��l�i�,t //fffsa *� / / II 1� ♦���♦/�Iiiiii °i-- -- �SS������������� I / /►I��I��I���I��ItftafJffll jl!Iffff /��t•� / / ♦� Iiisii�WA�iiru I)( *. �IjIIffls•I jf j %�I�i~i1 II ��Iwiw��i�iii --- *A���j � iIjI111iiiiiiiN&,M= i fji�� 'i���i�::�� J1 =1t 11 11= 1 lw /. ,., �Ij111i�1 , %ii�i�i�u 11 I �i��j�liisiiiiiiii�,ii1� %i� lliiiiwii %iiii M. 1. hI�JLIi r - r it �n II r l l r ► : r 'r • r 'r r - inches thick without a risk of frequent flooding and ponding. 20C3 - Cullen clay loam- 7% to 159' slopes. This soil is well drained & typically has a very !ow to moderately high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically moderate. The surface layer is generally 0 -8 inches thick without a risk of frequent flooding and ponding. 2B - Albemarle fine sandy loom- 2% to 7X slopes. This soil is well drained & typically has a moderately high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically low. The surface layer is generally 0 -5 inches thick without a risk of frequent flooding and ponding. 22C3 - Culpeper clay loam- 7% to 159' slopes. This soil is well drained & typically has a very low to high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically moderate. 7h a surface layer is generally 0 -8 inches thick without a risk of frequent flooding and ponding. 19B - Cullen loam- 2X to 7X slopes. This soil is well drained & typically has a very low to high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically moderate. The surface layer is generally 0 -8 inches thick without a risk of frequent flooding and ponding. 21H - Culpeper fine sandy loam- 2% to 7% slopes. This soil is well drained & typically has a very low to high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically moderate. The surface layer is generally 0 -8 inches thick without a risk of frequent flooding and ponding. 39D - Hazel loam- 159' to 25X slopes. This soil is excessively drained & typically has a moderately high to high Ksat value with a depth to water table more than 80 inches. The available water capacity for this soil is typically low. The surface layer is generally 0 -10 inches thick without a risk of frequent flooding and ponding. Reference: web soil survey online database, found at Ht tp: / /websoilsurvey. Nres. Usda. Gov /app /websoilsurvey. Aspx Stormwater Management Sfandard Dimensions MWITOTHMA .1 • • 1 a t R i .. 24 30 48 58 34 1.49 27 331/2 64 72 371/2 2.28 30 37 60 72 41 2.26 36 44 60 72 48 2.22 42 51 72 86 55 3.16 48 58 84 100 62 4.27 54 Fi61 /2 84 140 70112 4.20 60 72 96 114 76 5.48 66 80112 96 114 841/2 5.39 72 86 108 128 90 6.83 78 94112 126 147 98 112 8.97 84 100 126 147 104 8,80 90° Typ. _ ".' ' InletlArea -,, s - '\ (,' f/ ,x,, '11- �I- "` �1 " \ 1/ // r/ OutletlArea �+`� \� �t 1 it 7 1 �- 11 I 1...- .�._�--__ �_-u_--1-. A II It °t t _ ti--- - !i 1? 1 A 1 \A � / // I \ \\ \ I / j // ! \\ \ \1 ��� !/ I 11 i t,.r , - I - O tional �i- A L 6"o vent Frame & Grate Std. Cast in Top Slab Plan View Anti - Vortex Cap O.D. Anti -Vortex Cap 1. 11 1•-- -- Notch Diameter i l N It I I - r 1.7-11 E_ Z m I I Anti - Vortex Riser LID. 2" , Anti -Vortex Riser O.D. tote: I -` v and Riser) Manufactured in (1,) Anti-Vortex device (Gap a ) accordance with ASTM G478. (2.) Dimensions subject to permissible variations of ASTM G478. (3.) Inlet area (Area between device I.D. and riser O.D.) is greater than outlet area. {Area of riser LD.) (4.) Slab reinforcement to be ASTM A615 #f4 bars @ 8" E.W. . Circumferential reinforcement to be A� = 1' C 0.150 2x 6 W2.5 x `<N2.5 WMF minimum. Material properties: f'c = 4,000 p.s.i., fy = 60,000 p.s.i. Concrete cover ,over f. 4 ksi, Concrete cover over reinforcement (CCOR) = 1" unless noted. (5.) DI -1 Frame & Grate Is available for 48" I.D. risers and larger. TITLE Precast Anti- Vertex Device (Cap and Risen + Section A -A -Flo scale- AII dimensions subject to allowable specification tolerances. . STATE SECTIO%PAOE DATE 2001 VA 14,1 03 -15 -06 Hal"1,a�(M CURB INLET Z<7 - FIGIiRE 3,01 - la Honitugeneous Etnbat&inents fv1 w5'eepa,c,,e Controls Rornogeneous fill 4' rifin `T l --lut off tr�nafi- , teelow mit,3 e mareri Suil or rock - TYPICAL HOMOGENEOUS EB,�NKMEIT r. ....w` 00,3r filter rI sI :t F' , rarT�t�d ter t1r '1� aroiuN slots - � T c�undatioii drain FOUNDATiON DRAIN 11 c: \3._01 -10 Tr nsit-on fill' ,,Rook or gravel '- Ranket droin BLANKET DRAIN rnnsy drain r, Sarni, or rock drain milt r Rock or gravel ,Atk ttrG /. , "I 11fI ,� , �Iransltion filter Tronsition filter CHIMNEY DRAIN TOE DRAIN ISiWia.'r','8C,� i� ?!Sm -17 ',eil�i i(`lil ,J/Ivlu(.fi 3.01 - 3 Technical Bulletin T Minimum Standard 3.02 ter` L/2" kne plater) hook attr-ObV4 wi ; /a' .t6 ter 8 -1 /0' slice, hraiax rr. W.ZW_ �i; -:-A \-` Isometric 1/4' IMPFE pdate t - .. F _.-, r . � . .�-­' Z A4 � ®., HiiPE a a^siict�,lr\cI leaf#10 with e E i Z-11/W" h4lea and i74` ptate n�snuftatured >ar Piast4a + Sa•1abisrm Ina. or equal .:�_ ..11, a,s+Wl� mth ort�aj plate ar . .. 1T aid rvna. �G Section m.e.u>&t�t:ursd< WY 41St to t�ola#:�aans Iz��, wr mqus1 BfII" slice. �4 - - I �" i -�s�T std, -s I 0 I I I I 1 , IX r__ - -- - - - - --I - Dales I -- - - - --- _�----------- - - - - -- ariflu4 leva .ion ariflae BM DEBRIS CAGE SOLUTION' Box f�V 0. INC- -M-ak /A sWW.P 0ik -30kkW .4aml TTB7 3 FILTER FABRIC ENTRENCHED 6" COMPACTED SOIL 3' MINIMUM _::7, I-"_ 111001 111111 - _____ 3s III I!I II1111111111- _ ;_ 111- _ __ � 11 111 I I 1 111 24„ _- =- 1 -1 i I I I 1 =1 11 111, I I I- - -I I F_ E I I 11=1 I I I I II -1 __ _ _ - :: -- , � - -1 I = 11� I IC III �I 11 I 1 III ! ! 1- -- I I .._I I Im- --1 I 1- ..__MI I I - -1 I 1 I; ICI I I_- _I !' � I� t 8' D TEMPORARY DI�TERSION Sediment Basin Design #2 - tffiPp.1 °i1 5P14LtlY41' ds!M �,?' a4mgw( 2'rittHQtrr J, SPILLWAY drainage area (acres) 6.53 DESI" HIGH WAT R I basin votumess. (ustrig 2' contour internals) (25-'fk. STORM E'r elevation (ft) contour area lsf) volirre(cy) - -_�_- _ -- - - - - -- 414_.; 1;10?.0 0 I I _ %T._ _ . . Mim CREST 416.00 1792.0 109 - E � ,�,NG 41 _fj 5 0 26B ._ ,_. , . t�CL W..,dR,�3E :. :.:'.: 4uu.�.,'} b401.0 JtJ+'r . 421-2 .00 4362.0 9` 5 SE 4MF-NT CLL4 0C ff #-"Owl f 42#,4.()0 5424_i0 1347 C 3. TO GEREEDJUD v�et storage wet sbrage required (cy) (67'11DA) 438 design high inter 422,50 de>«watering orifice ele_ -&bon (ft) 419.06 top of dam (ft) 424.00 ;net storage pro \ded at this elevation (cy ) 438 top width of da:m (ft) 6.0 availabte vokirre before cleanout (cy;) (.04 *DA) 22:2 bottom of basin (f) 414.0 cicarm ut elevation (ft) 417.36 approx bottom dimensions. 56x32' distance from cL-anout to orifice (fit) (° V) 1.7 upstream face slope: 2:1 max dov i&eamface slope_ 3.1 rtin. dry storage: dry storage required (cy) (67x0£) 438 baffles: YES principle spiitviey crest (fit 421.60 length of flotp<: L. (ft) 60 dry storage provided at this elevation, (cy) 448 effective v.idth, VVe (ft) 82.3 diareter of de watering orifice (in) 6 -0 L. I We (baffles required if { 2) 0,6 diameter of flexible tubing (in) (ohfiir_e +Z') g -O colars: YES runoff depth of venter at spiltomyr crest (fl) 7.r0 C (use 0 -45 for Mare ear-h) 0 -45 stripe of .upstream face (Z.1) 2 tc (gin) 11 slope of barrel (Sb) 0.50 °'0 12yr 4 -0 Q2vr 11.20 length of barrel in saturated zone (Ls) 40 125yr 6 -7 Q25yr 21.7 number Collars required' 2 dimension of collars 4.3'x43° principle spilh.y: avaitabte head (ft) 0.00 etTergency spin y= YES diameter riser (in) 30 required cawAyr (025 -C1p) (cfs} 0.0 spillway capacity, Op (cfs) 29.0 bottom v.tdth (ft) 10 diamter trash rack (iri) 42 siope of exist channel (ftfft) 1% barrel Length (ft) 0 minimun length of exit channel (ft) 6 head on barrel through err - banker -tit (ft) 3.5 crest of sptlWay (ft) 422.5 diameter of barrel (in) 24 SEDIMENT BASIN SB -,2 674 TOPSOIL EXISTING GROUND 1VTS - 6 42" 1. D. 15" HIGH TOP OF DAM ELEV. = 424.00' I TEMP. CMP TRASH RACK DEVICE 25 YR. STORM 1.0' MIN . _ "```.". - EMERGENCY SPILL WAY 1 -; - 111- ELEV. = 422.5' _ ., CREST ELEV. = 422.5 C___ � RISER TOP ELEV. = 421.5' 1.0 MIN.. » 16 . -� -; 30 DIE. CMP RISER I nc. _ DRY VOLUME ELEV REQUIRED = 421.45'f;;, ` 1' SCARIFIED KEY FOR 6" DiE. DEWATERING SOIL COHESION I t± ; i ........... ; DEV1 CE : >: » >:: >:::: >:: »::_::_: >. IN V. OUT= 418.8 n UPSTREAM TOE OF DAM ....., XISTING GROUN ELEV = 414 00 �x MIN. 30" COMPACTED .` SOIL OR A GGREGA TE OVER ` "`? "i OUTLET PROTECTION BASE PLATE VDOT CLASS H, EC -1 BOTTOM OF BASIN 5X5',014" THICK GALV CLAY ORED DAM RIPRAP w/ ELEV. = 414.00 STEEL BASE PLATE KEYED INTO THE GEOTEXTILE FABRIC EXISTING GROUND UNOERLAYMENT IN IN = 419.0' 24" CMP (2) 4.3 X 4.3' GAL V. STEEL LEN GTH =40' ANTI -SEEP COLLARS SLOPE =0.5% �T-oF �' f o scoT x. cor�.ixsz U No. 35791 ,2� V-6 Oiv, � ��• o IONAL - Z O t a W Z O �, R •� U) z 0 ti LU U) W 1W UJ a H Z Z W W 2: Z Q 0 O Z O V a V H D W V: 0 o oG Z O W D_ Z > � g w a- Ln Ln W ,aC Ln Ln W T-1 71 O o 1-4 V-4 d z it W W Z 0 z W Ln z J 0 0 0 C 0 M C 0 0 c 0 Z 3 0) 0 0- X 0 a) 0 r 3 C" a N C 0 U F, 0) C 0 0 0 C a C n 0 W 0 Ll ., r_ 0 0 0 a 0 0 c 11 a 0 3 0 c 0 a m .. a C it O N O C. D CL >1 a 0 a Q W n 0 C v C m v C a W O CL S `0 a? O C C V 0 0 a 0 CL 0 " 0 n 0 c T a E a C a D K Y .d A Z Z Z J J D 0 T 0 0- 0 n. > 0 0 X 0 4) L a C acs C 0 v v 1 v_ U 0 rn N a C a 9, C a 0- 0 W 90° Typ. _ ".' ' InletlArea -,, s - '\ (,' f/ ,x,, '11- �I- "` �1 " \ 1/ // r/ OutletlArea �+`� \� �t 1 it 7 1 �- 11 I 1...- .�._�--__ �_-u_--1-. A II It °t t _ ti--- - !i 1? 1 A 1 \A � / // I \ \\ \ I / j // ! \\ \ \1 ��� !/ I 11 i t,.r , - I - O tional �i- A L 6"o vent Frame & Grate Std. Cast in Top Slab Plan View Anti - Vortex Cap O.D. Anti -Vortex Cap 1. 11 1•-- -- Notch Diameter i l N It I I - r 1.7-11 E_ Z m I I Anti - Vortex Riser LID. 2" , Anti -Vortex Riser O.D. tote: I -` v and Riser) Manufactured in (1,) Anti-Vortex device (Gap a ) accordance with ASTM G478. (2.) Dimensions subject to permissible variations of ASTM G478. (3.) Inlet area (Area between device I.D. and riser O.D.) is greater than outlet area. {Area of riser LD.) (4.) Slab reinforcement to be ASTM A615 #f4 bars @ 8" E.W. . Circumferential reinforcement to be A� = 1' C 0.150 2x 6 W2.5 x `<N2.5 WMF minimum. Material properties: f'c = 4,000 p.s.i., fy = 60,000 p.s.i. Concrete cover ,over f. 4 ksi, Concrete cover over reinforcement (CCOR) = 1" unless noted. (5.) DI -1 Frame & Grate Is available for 48" I.D. risers and larger. TITLE Precast Anti- Vertex Device (Cap and Risen + Section A -A -Flo scale- AII dimensions subject to allowable specification tolerances. . STATE SECTIO%PAOE DATE 2001 VA 14,1 03 -15 -06 Hal"1,a�(M CURB INLET Z<7 - FIGIiRE 3,01 - la Honitugeneous Etnbat&inents fv1 w5'eepa,c,,e Controls Rornogeneous fill 4' rifin `T l --lut off tr�nafi- , teelow mit,3 e mareri Suil or rock - TYPICAL HOMOGENEOUS EB,�NKMEIT r. ....w` 00,3r filter rI sI :t F' , rarT�t�d ter t1r '1� aroiuN slots - � T c�undatioii drain FOUNDATiON DRAIN 11 c: \3._01 -10 Tr nsit-on fill' ,,Rook or gravel '- Ranket droin BLANKET DRAIN rnnsy drain r, Sarni, or rock drain milt r Rock or gravel ,Atk ttrG /. , "I 11fI ,� , �Iransltion filter Tronsition filter CHIMNEY DRAIN TOE DRAIN ISiWia.'r','8C,� i� ?!Sm -17 ',eil�i i(`lil ,J/Ivlu(.fi 3.01 - 3 Technical Bulletin T Minimum Standard 3.02 ter` L/2" kne plater) hook attr-ObV4 wi ; /a' .t6 ter 8 -1 /0' slice, hraiax rr. W.ZW_ �i; -:-A \-` Isometric 1/4' IMPFE pdate t - .. F _.-, r . � . .�-­' Z A4 � ®., HiiPE a a^siict�,lr\cI leaf#10 with e E i Z-11/W" h4lea and i74` ptate n�snuftatured >ar Piast4a + Sa•1abisrm Ina. or equal .:�_ ..11, a,s+Wl� mth ort�aj plate ar . .. 1T aid rvna. �G Section m.e.u>&t�t:ursd< WY 41St to t�ola#:�aans Iz��, wr mqus1 BfII" slice. �4 - - I �" i -�s�T std, -s I 0 I I I I 1 , IX r__ - -- - - - - --I - Dales I -- - - - --- _�----------- - - - - -- ariflu4 leva .ion ariflae BM DEBRIS CAGE SOLUTION' Box f�V 0. INC- -M-ak /A sWW.P 0ik -30kkW .4aml TTB7 3 FILTER FABRIC ENTRENCHED 6" COMPACTED SOIL 3' MINIMUM _::7, I-"_ 111001 111111 - _____ 3s III I!I II1111111111- _ ;_ 111- _ __ � 11 111 I I 1 111 24„ _- =- 1 -1 i I I I 1 =1 11 111, I I I- - -I I F_ E I I 11=1 I I I I II -1 __ _ _ - :: -- , � - -1 I = 11� I IC III �I 11 I 1 III ! ! 1- -- I I .._I I Im- --1 I 1- ..__MI I I - -1 I 1 I; ICI I I_- _I !' � I� t 8' D TEMPORARY DI�TERSION Sediment Basin Design #2 - tffiPp.1 °i1 5P14LtlY41' ds!M �,?' a4mgw( 2'rittHQtrr J, SPILLWAY drainage area (acres) 6.53 DESI" HIGH WAT R I basin votumess. (ustrig 2' contour internals) (25-'fk. STORM E'r elevation (ft) contour area lsf) volirre(cy) - -_�_- _ -- - - - - -- 414_.; 1;10?.0 0 I I _ %T._ _ . . Mim CREST 416.00 1792.0 109 - E � ,�,NG 41 _fj 5 0 26B ._ ,_. , . t�CL W..,dR,�3E :. :.:'.: 4uu.�.,'} b401.0 JtJ+'r . 421-2 .00 4362.0 9` 5 SE 4MF-NT CLL4 0C ff #-"Owl f 42#,4.()0 5424_i0 1347 C 3. TO GEREEDJUD v�et storage wet sbrage required (cy) (67'11DA) 438 design high inter 422,50 de>«watering orifice ele_ -&bon (ft) 419.06 top of dam (ft) 424.00 ;net storage pro \ded at this elevation (cy ) 438 top width of da:m (ft) 6.0 availabte vokirre before cleanout (cy;) (.04 *DA) 22:2 bottom of basin (f) 414.0 cicarm ut elevation (ft) 417.36 approx bottom dimensions. 56x32' distance from cL-anout to orifice (fit) (° V) 1.7 upstream face slope: 2:1 max dov i&eamface slope_ 3.1 rtin. dry storage: dry storage required (cy) (67x0£) 438 baffles: YES principle spiitviey crest (fit 421.60 length of flotp<: L. (ft) 60 dry storage provided at this elevation, (cy) 448 effective v.idth, VVe (ft) 82.3 diareter of de watering orifice (in) 6 -0 L. I We (baffles required if { 2) 0,6 diameter of flexible tubing (in) (ohfiir_e +Z') g -O colars: YES runoff depth of venter at spiltomyr crest (fl) 7.r0 C (use 0 -45 for Mare ear-h) 0 -45 stripe of .upstream face (Z.1) 2 tc (gin) 11 slope of barrel (Sb) 0.50 °'0 12yr 4 -0 Q2vr 11.20 length of barrel in saturated zone (Ls) 40 125yr 6 -7 Q25yr 21.7 number Collars required' 2 dimension of collars 4.3'x43° principle spilh.y: avaitabte head (ft) 0.00 etTergency spin y= YES diameter riser (in) 30 required cawAyr (025 -C1p) (cfs} 0.0 spillway capacity, Op (cfs) 29.0 bottom v.tdth (ft) 10 diamter trash rack (iri) 42 siope of exist channel (ftfft) 1% barrel Length (ft) 0 minimun length of exit channel (ft) 6 head on barrel through err - banker -tit (ft) 3.5 crest of sptlWay (ft) 422.5 diameter of barrel (in) 24 SEDIMENT BASIN SB -,2 674 TOPSOIL EXISTING GROUND 1VTS - 6 42" 1. D. 15" HIGH TOP OF DAM ELEV. = 424.00' I TEMP. CMP TRASH RACK DEVICE 25 YR. STORM 1.0' MIN . _ "```.". - EMERGENCY SPILL WAY 1 -; - 111- ELEV. = 422.5' _ ., CREST ELEV. = 422.5 C___ � RISER TOP ELEV. = 421.5' 1.0 MIN.. » 16 . -� -; 30 DIE. CMP RISER I nc. _ DRY VOLUME ELEV REQUIRED = 421.45'f;;, ` 1' SCARIFIED KEY FOR 6" DiE. DEWATERING SOIL COHESION I t± ; i ........... ; DEV1 CE : >: » >:: >:::: >:: »::_::_: >. IN V. OUT= 418.8 n UPSTREAM TOE OF DAM ....., XISTING GROUN ELEV = 414 00 �x MIN. 30" COMPACTED .` SOIL OR A GGREGA TE OVER ` "`? "i OUTLET PROTECTION BASE PLATE VDOT CLASS H, EC -1 BOTTOM OF BASIN 5X5',014" THICK GALV CLAY ORED DAM RIPRAP w/ ELEV. = 414.00 STEEL BASE PLATE KEYED INTO THE GEOTEXTILE FABRIC EXISTING GROUND UNOERLAYMENT IN IN = 419.0' 24" CMP (2) 4.3 X 4.3' GAL V. STEEL LEN GTH =40' ANTI -SEEP COLLARS SLOPE =0.5% �T-oF �' f o scoT x. cor�.ixsz U No. 35791 ,2� V-6 Oiv, � ��• o IONAL - Z O t a W Z O �, R •� U) z 0 ti LU U) W 1W UJ a H Z Z W W 2: Z Q 0 O Z O V a V H D W V: 0 o oG Z O W D_ Z > � g w a- Ln Ln W ,aC Ln Ln W T-1 71 O o 1-4 V-4 d z it W W Z 0 z W Ln z J 0 0 0 C 0 M C 0 0 c 0 Z 3 0) 0 0- X 0 a) 0 r 3 C" a N C 0 U F, 0) C 0 0 0 C a C n 0 W 0 Ll ., r_ 0 0 0 a 0 0 c 11 a 0 3 0 c 0 a m .. a C it O N O C. D CL >1 a 0 a Q W n 0 C v C m v C a W O CL S `0 a? O C C V 0 0 a 0 CL 0 " 0 n 0 c T a E a C a D K Y .d A Z Z Z J J D 0 T 0 0- 0 n. > 0 0 X 0 4) L a C acs C 0 v v 1 v_ U 0 rn N a C a 9, C a 0- 0 W v�et storage wet sbrage required (cy) (67'11DA) 438 design high inter 422,50 de>«watering orifice ele_ -&bon (ft) 419.06 top of dam (ft) 424.00 ;net storage pro \ded at this elevation (cy ) 438 top width of da:m (ft) 6.0 availabte vokirre before cleanout (cy;) (.04 *DA) 22:2 bottom of basin (f) 414.0 cicarm ut elevation (ft) 417.36 approx bottom dimensions. 56x32' distance from cL-anout to orifice (fit) (° V) 1.7 upstream face slope: 2:1 max dov i&eamface slope_ 3.1 rtin. dry storage: dry storage required (cy) (67x0£) 438 baffles: YES principle spiitviey crest (fit 421.60 length of flotp<: L. (ft) 60 dry storage provided at this elevation, (cy) 448 effective v.idth, VVe (ft) 82.3 diareter of de watering orifice (in) 6 -0 L. I We (baffles required if { 2) 0,6 diameter of flexible tubing (in) (ohfiir_e +Z') g -O colars: YES runoff depth of venter at spiltomyr crest (fl) 7.r0 C (use 0 -45 for Mare ear-h) 0 -45 stripe of .upstream face (Z.1) 2 tc (gin) 11 slope of barrel (Sb) 0.50 °'0 12yr 4 -0 Q2vr 11.20 length of barrel in saturated zone (Ls) 40 125yr 6 -7 Q25yr 21.7 number Collars required' 2 dimension of collars 4.3'x43° principle spilh.y: avaitabte head (ft) 0.00 etTergency spin y= YES diameter riser (in) 30 required cawAyr (025 -C1p) (cfs} 0.0 spillway capacity, Op (cfs) 29.0 bottom v.tdth (ft) 10 diamter trash rack (iri) 42 siope of exist channel (ftfft) 1% barrel Length (ft) 0 minimun length of exit channel (ft) 6 head on barrel through err - banker -tit (ft) 3.5 crest of sptlWay (ft) 422.5 diameter of barrel (in) 24 SEDIMENT BASIN SB -,2 674 TOPSOIL EXISTING GROUND 1VTS - 6 42" 1. D. 15" HIGH TOP OF DAM ELEV. = 424.00' I TEMP. CMP TRASH RACK DEVICE 25 YR. STORM 1.0' MIN . _ "```.". - EMERGENCY SPILL WAY 1 -; - 111- ELEV. = 422.5' _ ., CREST ELEV. = 422.5 C___ � RISER TOP ELEV. = 421.5' 1.0 MIN.. » 16 . -� -; 30 DIE. CMP RISER I nc. _ DRY VOLUME ELEV REQUIRED = 421.45'f;;, ` 1' SCARIFIED KEY FOR 6" DiE. DEWATERING SOIL COHESION I t± ; i ........... ; DEV1 CE : >: » >:: >:::: >:: »::_::_: >. IN V. OUT= 418.8 n UPSTREAM TOE OF DAM ....., XISTING GROUN ELEV = 414 00 �x MIN. 30" COMPACTED .` SOIL OR A GGREGA TE OVER ` "`? "i OUTLET PROTECTION BASE PLATE VDOT CLASS H, EC -1 BOTTOM OF BASIN 5X5',014" THICK GALV CLAY ORED DAM RIPRAP w/ ELEV. = 414.00 STEEL BASE PLATE KEYED INTO THE GEOTEXTILE FABRIC EXISTING GROUND UNOERLAYMENT IN IN = 419.0' 24" CMP (2) 4.3 X 4.3' GAL V. STEEL LEN GTH =40' ANTI -SEEP COLLARS SLOPE =0.5% �T-oF �' f o scoT x. cor�.ixsz U No. 35791 ,2� V-6 Oiv, � ��• o IONAL - Z O t a W Z O �, R •� U) z 0 ti LU U) W 1W UJ a H Z Z W W 2: Z Q 0 O Z O V a V H D W V: 0 o oG Z O W D_ Z > � g w a- Ln Ln W ,aC Ln Ln W T-1 71 O o 1-4 V-4 d z it W W Z 0 z W Ln z J 0 0 0 C 0 M C 0 0 c 0 Z 3 0) 0 0- X 0 a) 0 r 3 C" a N C 0 U F, 0) C 0 0 0 C a C n 0 W 0 Ll ., r_ 0 0 0 a 0 0 c 11 a 0 3 0 c 0 a m .. a C it O N O C. D CL >1 a 0 a Q W n 0 C v C m v C a W O CL S `0 a? O C C V 0 0 a 0 CL 0 " 0 n 0 c T a E a C a D K Y .d A Z Z Z J J D 0 T 0 0- 0 n. > 0 0 X 0 4) L a C acs C 0 v v 1 v_ U 0 rn N a C a 9, C a 0- 0 W SEDIMENT BASIN SB -,2 674 TOPSOIL EXISTING GROUND 1VTS - 6 42" 1. D. 15" HIGH TOP OF DAM ELEV. = 424.00' I TEMP. CMP TRASH RACK DEVICE 25 YR. STORM 1.0' MIN . _ "```.". - EMERGENCY SPILL WAY 1 -; - 111- ELEV. = 422.5' _ ., CREST ELEV. = 422.5 C___ � RISER TOP ELEV. = 421.5' 1.0 MIN.. » 16 . -� -; 30 DIE. CMP RISER I nc. _ DRY VOLUME ELEV REQUIRED = 421.45'f;;, ` 1' SCARIFIED KEY FOR 6" DiE. DEWATERING SOIL COHESION I t± ; i ........... ; DEV1 CE : >: » >:: >:::: >:: »::_::_: >. IN V. OUT= 418.8 n UPSTREAM TOE OF DAM ....., XISTING GROUN ELEV = 414 00 �x MIN. 30" COMPACTED .` SOIL OR A GGREGA TE OVER ` "`? "i OUTLET PROTECTION BASE PLATE VDOT CLASS H, EC -1 BOTTOM OF BASIN 5X5',014" THICK GALV CLAY ORED DAM RIPRAP w/ ELEV. = 414.00 STEEL BASE PLATE KEYED INTO THE GEOTEXTILE FABRIC EXISTING GROUND UNOERLAYMENT IN IN = 419.0' 24" CMP (2) 4.3 X 4.3' GAL V. STEEL LEN GTH =40' ANTI -SEEP COLLARS SLOPE =0.5% �T-oF �' f o scoT x. cor�.ixsz U No. 35791 ,2� V-6 Oiv, � ��• o IONAL - Z O t a W Z O �, R •� U) z 0 ti LU U) W 1W UJ a H Z Z W W 2: Z Q 0 O Z O V a V H D W V: 0 o oG Z O W D_ Z > � g w a- Ln Ln W ,aC Ln Ln W T-1 71 O o 1-4 V-4 d z it W W Z 0 z W Ln z J 0 0 0 C 0 M C 0 0 c 0 Z 3 0) 0 0- X 0 a) 0 r 3 C" a N C 0 U F, 0) C 0 0 0 C a C n 0 W 0 Ll ., r_ 0 0 0 a 0 0 c 11 a 0 3 0 c 0 a m .. a C it O N O C. D CL >1 a 0 a Q W n 0 C v C m v C a W O CL S `0 a? O C C V 0 0 a 0 CL 0 " 0 n 0 c T a E a C a D K Y .d A Z Z Z J J D 0 T 0 0- 0 n. > 0 0 X 0 4) L a C acs C 0 v v 1 v_ U 0 rn N a C a 9, C a 0- 0 W �T-oF �' f o scoT x. cor�.ixsz U No. 35791 ,2� V-6 Oiv, � ��• o IONAL - Z O t a W Z O �, R •� U) z 0 ti LU U) W 1W UJ a H Z Z W W 2: Z Q 0 O Z O V a V H D W V: 0 o oG Z O W D_ Z > � g w a- Ln Ln W ,aC Ln Ln W T-1 71 O o 1-4 V-4 d z it W W Z 0 z W Ln z J 0 0 0 C 0 M C 0 0 c 0 Z 3 0) 0 0- X 0 a) 0 r 3 C" a N C 0 U F, 0) C 0 0 0 C a C n 0 W 0 Ll ., r_ 0 0 0 a 0 0 c 11 a 0 3 0 c 0 a m .. a C it O N O C. D CL >1 a 0 a Q W n 0 C v C m v C a W O CL S `0 a? O C C V 0 0 a 0 CL 0 " 0 n 0 c T a E a C a D K Y .d A Z Z Z J J D 0 T 0 0- 0 n. > 0 0 X 0 4) L a C acs C 0 v v 1 v_ U 0 rn N a C a 9, C a 0- 0 W IT 11 3. 14 1992 ...... ......... 0 PROPOSED DEWATERING SYSTEM FOR SEDIMENT BASIN #1A NOTES: CONTRACTOR SHALL REMOVE EXISTING DEWATERING DEVICE (SOLID& PERFORATED STANDPIPE) AND PLUG ORIFICE IOPENING INTO THE RISER. i 2. CONTRACTOR SHALL INSTALL A NEW DEWATERING DEVICE PER THIS DETAIL. NEW DEWATERING DEVICE ORIFICE COTT R. COLLINStX OPENING INTO RISER SHALL HAVE AN INVERT ELEV. 43.4m. AN ORIFICE OPENING AT THIS INVERT CREATES A DRY L-) No. 35791 STORAGEVOLUME OF1,073 cy.THISVOLUME IS REPRESENTED BYTHEVOLUME BETWEEN THE RISER RIM (425-39AB) & THE DEWATERING DEVICE ORIFICE OPENING (PROPOSED 414.00'). A DEWATERING DEVICE ORIFICE OPENING INTO THE 9 RISER AT ELEV .414.00'CREATES A WET STORAGE VOLUME OF 3, ALREADY HAS SILT ACCUMULATION). DUE TO THE EXCESS AMOUNT OF WET STORAGE AVAILABLE, THE SEDIMENT 101VAL CLEANOUT VOLUME OF 452 cY (35 x 13 10INVAL 866 cy (ASSUMING THE LOWER 2'OF THE BASIN .25 ac.) CORRESPONDS TO A DEPTH OF 9" BELOW THE DEWAETERING DEVICE A MINIMUM DISTANCE OF 3.2" IS REQUIRED BETWEEN THE INVERT. HOWEVER PER VESCH SPECIFICATION 3.14, DEWATERING DEVICE INVERT & THE CLEANOUT ELEVATION. AS A RESULT, THE MORE CONSERVATIVE 12" DEPTH _9Aw DICTATES A CLEANOUT ELEVATION OF 413-00'. tAm- P6LYMYLEN E! CAP IDC . ..... VARIQ A - - - ­­-- - - ­­­ ITACK WELO 'IRED REOU FOR z -KACE TUBIN DAMEIE 0 VAR�CS� (SEE �C�l CIJI.ATIONS IN APPENOX 3_14-A) u u uj WET z 0 IFT ��O�-,STYL- ,qNKC CGLY LIN STORAGf ri) > uj IQE 'ERING GFIFICE, _WA7 II%T U-6 1 - FIN' )T MUM W, 40 5 I'R VARI ES (SE ,E CAL"ILATIM N4 DMETL son CX)RRUGAIEP 14-TTAL. WER APPEDIX 3. Tc= i2niin. .. . ... . .. .. . ............ Ioo'OLF w/ A ELEV.=21' I(Tc=q.Srrjin.) STOCKPILE IT Of� A R AREA 600CF w/ A LEV.=78' Em P PROPOSED EROSION STOKO�.Llt' (TC=2.�,min.) CONTROL BLANKET M�Tl ON SCHEDULt: 40 S"TUO NOT[,: WITH CONGRETE RISER, USE PVC L MATTING ALONG 3:1 IN FOR DEWATERN CRIFIGE SLOPES IN THIS AREA FOR - -------------- I---------- - ------ - --------- STABILIZATION ...... ....... --- ---------- --- ------------- ... ....... .... ------------- ........ uj - - -------- .... . ... . ..... .................. . . . . . ............. -------- 8' .4 �,' v . , I G1 w *0E TUSING SHALL COMPLY WITH TV F667 DRAIN < AN'D Ak'SHTO M2.94 IPROPOSED LIMITS OF IIDISTURBANCE 9.9 ACRES .......... _Ps: ---_-_-- - -- -- - ---------- ... . ..... . ------------- - -------------------- SIB #:LA .. .......... -------- -------- IP . . ......... ..... Lu A F 0 ce 0 0 .. ........ ........... (MODIFIED) Ix rce- Va,'DSWC z Lu �,u Sou Plat 14 0 L .. . ..................... . . .. . ........... I UpsALLEY T i6o r z 11 ............ . . . ... . ....... . IZ Lu I"i U, I_T_ LU / .... - - ---- ;7,-, > > > > > > z I p U It 0 LOT:176 7 LOT:18o L A;, - 79 P S 'T 177�, LOT i6i 17ts z u 0 ILu L.. . ........ ------ - - - ---------- ------------------------- --------------------------- u- ------------- z IIA I........ .... Ps V) LOT:L75 z XISTING DRACK T I -0 0 u 0 LL iu --LOT i5q Ex uj 53ac. �GT:i6 6'. > -- ---- Lu -146 LOT z '�A p LOT 174 v A ---------- -- - - ------- -- - ------------------------ LOT i63 -11 LOT i58 13-- LOT 147 --- - ----- - - ---- - - - 77 - - ----------- - - I P LOT 1:73 SILT FENCE TO �GRIFFEN GROVE' IP E N COMP-A SS --- ------- LOT3.64 Ln m A PUBLIC Re"" Lu OCTION --- - - - - ------ - - ----- - -- N AD RO D X) TOCKPILE PROPOSED LIMITS OF LOT 3-57 IILOT 148 DISTURBANCE 20.6 ACRES x "I 11 EXISTING IP TO i T I P UL REMOVED ILOT I INSTALL VROCK WEIR :�A SB#� TO ALLOW RUN-OFF TO 1 r) DRAIN FROM THE EXISTING L 156 . ...... 13.25�AC. IX LAGOONS �AAG09NS TO ND EXIST11 G IPTO BE CLEAN ILOT 71 Ps INSPECTEDONAR GULAR BE RE VIED E WTE: ORANGE, SAFETY F�ENCE TO IVJ EXISTING BASIS E�'COMPAS$ SEDIMENT BASINS IL OT Ps 0* I r'Ti66 APS�'AT ALL TIM ES FOR ANDTR cy) ---------- I"L il SARO'ND ISAFETY.INST A IBASINS A�DJRA 5 H EAb CONTRACTOR 11IDANG LOT --- --- CO ER, OU'ICK SAN NOT LOT PORTI-POTTY NTRACTOR ENTEF� co I_uELING AREA 170 ICONCRETE LOCATION D D WASH-OUT OTE: ORANGE SAFETY FENCE TO co uj S Fi AREA ENCOMPASS SEDIMENT BASINS AND ............ CONTRACTOR gdNbbb TRAPS AT ALL TIMES FOR SAFETY. I'r:L67 STAGING AREA LOT -i5o E INSTALL SIGNS AROUND BASINS AND is, n Ifoe IC N co IP TRAPS THAT READ "DANGER, QUICK I SAND, DO NOT ENTER" (TYP.�_- LOT 154 z I_A Iz --------- SIF f LOT i.69 Lu Ip IN DITCH - ISTORM IVER$110 IWAtER 40 LOT:ip. u c\j C. IP EXISTING IP CE �,CONVEYA LOT Ifig CHXNNEL ILL BE LINED DITCH SHA —EXISTING IPTO X? WITH RIPRA0AS c\1 W BALE ffi E '153 Ot REMOVED LOT N SHOW N! ON EXISTING IPTO (TYP.) DEtAIL,jHISSH ET! TB em s p P BE REMOVED Ir. > ILLJ BE REMOVED EXISTING IP TO IP LOT i5-1 IP < 7­ w IIV) 0 CE (S B 2) t,BASIN PAVED ENTRANCE MIN. 26 #2 DESIGN, SEE d6 > CONSTRUCTION ENTRANCE FIDR SEDIMEN z Ip EXISTING IP C/) ---------- - ------ DETALS ON THIS SHEET AND "EROSION OPEN SP ACE. ce 0 10 -EXISTING IP TO, Lu --- -- ----- & SEDIMENT CONTROL BEREMOVED AC. NOTES & DETAILS" I0 uj LOT i95 OFT A LOT_�94­ �EIASIN #nLA DESIGN . . .... L, T 193 FOR SEDIME < 'PHASEII IOL EXISTING SEDIMENT SEE,D5TAjLS ON LQT'192 \N, 00 Lu & "ERQSION & SEDIM PLAN' EXISTING OUTFALL U*) ENT IS11 BASIN -NOTES & DETAIL p I-ENTCONTR LL Ilk OSION & SEDIM EXISTING SEDIMENT BAS I N CONTROL s LOT igo I, 41' IUf V IILOT i88 LEVEL SPREADER- IN ACCORDANCE WITH DECI tAPPROVED SPECIFICATIONS LOT 187 CL LS uj FOR THIS DESIGN Z uj M IPROPOSED EROSION CONTROL BLANKET LOT A6 tJIVI MATTING ALONG 3:1 SLOPES IN THIS AREA DIVERSION DITCH -STORMWATER SF tU) FOR STABILIZATION IN THE LOCATION S ICONVEYANCE CHANNEL Z ion I...... THAT ARE NOT YET STABILIZED Im IDITCH SHALL BE LINED WITH RIPRAP AS SHOWN ON THE DETAIL THIS SHEET D w Iui LOT 3.85 uj ILOT:183 LOT 184 IIILOT 182 cn sp z IPE IN ACE CONTRACTOR SHALL INSTALL \,PERMANENT SWM EMBANKMENT, ICL U EMERGENCY SPILLWAY, RISER & BARREL IWITH THE CONSTRUCTION OF SB #2A. I. . . ......... ............. uj 0 ,MODIFICATIONS TO T/14E DIEWATERING ORIFICE & SWM ORIAdS ARE REQUIRED, z AS DETAILED 6N THE PLANS. 0 F OR RYI N,/ Lu < IPROPOSED EROSION CONTROL BLANKET ItNT IBASII LBE M RESERV�4110N 30 �UNCTIONA BV MATTING ALONG 3-2 SLOPES IN THIS AREA ...... E WEN L THOOL164OUT ALL C) S Fr; PHASES PF CQNSTRUCT u.j X ION. AT FOR STABILIZATION IN THE LOCATION S THAT ARE NOT YET STABILIZED C) /A Ic\1 INOPOIN�t SHALL UPLAN6AREAS INTREATED. BEDPCHARGED�' uj IB _1FLES., b -RIP RAP EMERGENCY uj j Ise. uj SPILLWAY-SPILLWAY TO BE LINED x WITH GEO-FABRIC AND RIP RAP TO PREVENT EROSION ALONG THE F- BANKOFTHEDAM 17C) uj 0 Lu L II0. IJOB N RO SED SEDIMENT BASIN RISER 112059 INSILED IN CUT. SILT ELEV. 421.5 f 'TOPOFDAm 24" CMP ELEV.=424' SCALE EXISTING SEDIM I I40 0 20 40 80 160 BARREL H I C SCALE FEN E`fOR ADDITIONAL BASIN AS SHOWN SHEET NO. IN FEET ­400 SEDIMENT BASIN #2 DETAIL 3 'A inc h 40 ft. SCALE: I"=30' '. . .. . . � " V �.: I . I . . . . V� . I - - "MMMIMM , > . V , V, . . , . � . ---.-I-' I � '. , ,;, - I I � � V 7' 11 \ � I � � F ­_ I � . Is-" I � � � 1i i � '11, X I 1 W - ,I 1, ; I, ---,,. I 1. F I '.­ ­­ - ­`10 � __- I � \ I . ___ ­- .", ,.-- I vi_ . i *1 , -, - _­ __ ,_�, �, , - , . � ,,, , �\ .0090-- __­ ,__­ ­.- � ,I I- ,,, I 11 � � '� 'I � ,-,,- -1 ,_� - 1W so so 40 ; I- ii I - � \ � SEDIMENT BASIN #1A DETAIL .... �1 I ; - ,\ ", " 1. I .,-.---- " '1­1 I [ ... I I I ,,, - 'A_ I,- I I , �� , -."No , ", . - j , F i 11 ", .1 I \ ­_ VW ------ -. "', -­ 'I-,' " i / � ,_ I ! 2 . I _ -,-,- "I -,- " � 1 4 _­ 11 I � � I ,\ I �_,_ _­­­ - _� _--­ I i 1­1 ,/ - � , ___ __ ... '_­ Z : � � I ___ I \ "", _ _ - ____ _ - - - 1-1 "" I ..", __ _,, _­1 � " ! I � I 1`1 Im No""" _­­ .1 _111 �1' � ____ 11­1- 11-1- H4 III ­,_ _,� \ _11- ,iiW10_ _,___ -_ _­ -,..I- - - - 1, ___ - ­­_ a ­40�-� C a 1i - -11 _,,, --.-, ___ 1­11 P � , , ­__ -_ ­1- � . . .... - " 1* I li'4'1 1­ 11 - ­­ "l- 11 - - __1 I - i - - - - - I" _� - ---. SCALE: 1"=20' -;., 1, I 1 _.- %_`-_1 --- , I, 1111.1-, . . ....... ____ ­- ­­- __ . -1. 1­1 " ­;_­ so maw lka� i - I I � i . � / I " � , , . I, I% I 1`11 � � :0 I ­_ I- " ­1, - .­­ _­­ -"- _111-- - _-, I I-_ 2 - � I � __ ­­­ I--, __ -1- ,�___. 11 _ 11-1- — -.1- .." ... 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OUT OF RISER=404.39'AB ___ , ,_.­ ­11-- ­- I - __ '_ - ­ _ '' I ! i 4 1 __ --- i ", , �1, � , ,, I? � - I , ­,� ,�, � - I 'r ------ _ : " i I " � " � � � It F 11, � � � i I i __­ � , �:',,,,,,-��,��-,�'l",��,,,,',,"";"".",-, , �r � i . I, % ! 4 � , " , I I I t PS , \ , t i i � k , , om � ; I i , If I , � - .... I � �, - \ 'k sm � I ;I I F I � ___ - ­­­ ---. � I �� ',I ­ , : � . I, , I- I I i I 1 i PLUGGED 04 SWM ORIFICE INV.=410.72'AB � -.1 __­ ­­­ ­­ ­­' � I I "', ! _._ Jil � - .� ��­ \ � i 4 I t � i � � \ , , �' ,;,-���,�",�,��,,,�":"",�,�',,,,-",;"",, I I , I , I i -, ­ _.­ � I I 1�1 i L _--t&1�,L"Z 11-11- � - . , '_ I I, �, I % \ I __ - [ __ __ __ I . Z,/, � , W . . . ...... . � "! � , " ; c, � i �/ \ ', , � I _ ___ " 1 1 1 , 11 � I ,'', � � 3 _r I � " � 11 I- \ � I _/ � I � � I I ! __ ___ � \ t��, .Z�1: ! - \ " \ I ; � ? ,", : . � , __ � 4 \ � 1�', __1 I � .1 - I _1� i -1 ; . I, " ...... "I ,I / �, I � 11 , I � i I ; , - L I 6 � � ,q \ � I I I � I I '41 - 1. ­11, ) I , ,-� � I 0 F I— � I � . � 11 ___ I ,; ,,�,__­­ . I � ,� . "'� . 14 I I � I I I r-, � I ; I �, / ­­ - \ , i I __ - .... _ � z � � I � ,--- ­_ "I I I I � � , �r , 11 \ \ I � I . " SWM ORIFICE INV.=413.72'AB ­__ � I , � _�', ,r_-�:_ � . I I I I � I ��I� 11 It i � ; -I,- \ t � ___ I I � I � i 1, _-, . '"' "-.;I- 11, N , 11 � � , I 4 � ; -, -, ',-,' 11%_1 X � , � � � ''I I I I . � � , F 11 ­._ _ __ _ - ,-- _,__ __ .... , , I I � 1 � " � --� - - , 2, , �, 11 � � . ,4 � i i \ � I � , ', i i � -_ - -- �- -i -1 I I � � I I, - '­11 _ ; 4N � I i I , 111-11 �, / � C, I _", - ____ -, I � , "-,- _-, � , F � � � In 1 f ! � I,- ,--I' 1 _':.:_ �, , � � �_ -_ -1, I I Z 1, "I I I i "I . ; ___ � I 1� I I I " 1 " " ­1­­­_­­ - . \ I I �� me I I - - , , � I ­1 � ! I I I / \ \ I I � ! 1 � I,- - � � � � - I I . I , -, __ ­­ 1­ � 11 I '.1 � � i i _7 ii "", I I F I I UM �, -­ --,-. _ .991 ­ __._ 1- � ­_ " � I , I 11 I ___ � i '4--, i ; � LLJ : � � 06" PERFORATED STANDPIPE INV. INTO RISER=407.14'AB "I - " � ... .... ��,r _�t " -: ,; I '_ "I ,I 1� , 'j, I � I � \1 � \ � -_ � I , f 1 I � . I -11 -1 I I : - ,­,�­,",, 1, � N .. : 1 ; � 1� d - I I I / . I i .� I I i 1 - , i / ; ! � I., 1. \ i , � ­_ I - " Z I I, � F I ; I I / " ,,.,�� I , �� �', , ;�,, � _,1I I _� I., / , � i aix' I � I \ - � �I � � I �__ -, � , b I I 0. I I - I - c 1 61F,e,5 '_ _ --- _­ , , I 11 � 1" " i � 1 / \ \ i I 4 - I m6l �,y /I I I ,. �,�­ , , 1 " ; ­ ,� , " 11 i � � k F I I 11 4 � I I � 9 - , . 4 � � ,�, � _-, , , I __ __ 11 I 1­1 __ , X I jf � � v � � 4 , \ I I i , , I ��� J 5 A � � \ � I _I - , I I � ! C , I , I " 1, , .1-3. ­#"�,_­ ­ 11 ,� . �z I I __ / � ,/ - � ; , I I X I i -, - ,_ � � - ,II� --- , , -;--�- i i � I � 1 TANDPIPE LOWEST PERFORATION ,� :� / " � _,11 a I � �11 ; )! 1 1 I " I,_ ,�� ­W__ r, , _17 "Ill ... 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L� ­41 / / 1 1 \ - � - ------ - � � :� _� ,Z � I I , , , \ ---I- �_ " 2'WITHOUT CRE$T OF EMERGENCY � " __ ­_ , � t 1% I , -1 " I T I FOR SEDIMENT-BA61N #2-k _­ ­­ ----- --"'- I I , , - - , " - , _­ I-, , 11 � I _.. - % - - " -- '11� , I �11 - ­ X n IN- \ i , -1. I w I _�,,'�_ � � , �� � � � - _,__I_',��,�.�,­ __ � _­_ "I "_'­'� I i \ 0. - - - ----- , 5, �\ / / 11.11 \, + -, , ; �� --- --- ,,!' � �, , I � 1, � I .� . __ - 1� ­­ __ 7 1 I. � � 1 y7 �� , / ; _­- : .1 f _ _­­ THAT ARE NOT YET STABILIZED . SPIILLWAY ­ ­V_ I 111%, I F ­­­', I I ;I - I -1 I -,,�, �� ,�/" -- t Z I � � I _ - ­-I �,­__ __ i I I / �,. i, , I I' - -- ,­r­� ­ � I I 11 I � I / I Ir ­­­- F-4 >, I -, � - ,I - __ 0 \ _i_ ­1- � I DESIGN, S�EbETAIII,S-014 THIS _�_ , J-4- I", � ", , , � : _,­ ", , __ ; 11 I __ ,a_ I � I I I " " " , 'I, I, i � _ _. - I , _,__�_ __ 1, '�� �� 1� � ,,�, I - /, z, - � , - 1 .-.----7-' 1 10 C 1111 11 . I . I / I 11 I � , _-,"( , ­_' / I I .--r- 11 I � 7 � , "', ", " drainage area (acres) DESIGN HIGH WATER i _�� \ - - IV 1 4 / 1 i �, -- ----- ! ! -,`­�, t - - �� �­�­ Z � � 11 .�", / DIVERSION DITCH - STORMWATER L_ 13.25 - ­ � ­T��­­ :L ­_ , - _I, ,� � � " I basin volumes: (using 2' contour intervals) (25-YR. S70RW, ELM) � __ /I I .... �, , � .--- - � ­ ­_�, _ _ i - SHEET& "EROSIPN't SEDjMEfqf , I I ,-�,: `,� �:I ""t �:.`�� -,-- - :-, ', " �,�­ � � i I 0 _�> -�:,��­�,�.-_ :.-.-',-"- __' I I I ( __ �, I � I I i i I I 0NTR,bL NOtES & D ___ __ _ I ­­ 11- y � I DD � _- I - ­_,�., - - - � I . f -+- , I � I I , "I, * � ,/ I rr U LU C, ,` , ;�. -A � � I ­_� _­ �, _��� ; I ,�., CONVEYANCE CHANNEL I ­�', ,� , -1 - i I I . I '�Ik :-, ` ',.`�-.', -I".i � �� , z I 4 �.r;�",:____.�-. o , . __ r . ., ,,"'_�, ,�, . t , . - , ,,. , , ,�, �, .r- " � 11 , I elevation (ft) contour area (sf) volume(cy) I'll, �__,_ , ­ -1 � - - � ,"_ __ _­ i - j I ') /I ( PEDESTRIAN PATHWAY SHALL BE PROTECTED VIA S.L. -0 -1 - I i I - - -t�o�� __ , - Ii 0 ", _._ � I I � , ,,�,,�,�,,,,,,,�'i':-""!:��','-,'.,,!'� "�, "�:'�"",!:� " � � I F I I . , . ,� -!,`�.�!�� ..-�, 1 ! � _ i��,�'. " , , FENCE ON THE DOWNHILL SIDE, AS SHOWN. THE LIMITS OF DITCH SHALL BE LINED WITH RIPRAP AS < V) 3 'j, I i �� 1% "I I I i I i ,._'�', ,,,� I- - � I , __;,,', \ __ ___ 405.00 0 __� - - � . � �,_�; � i J " ; � 11 � I --',.. " '! I ___ SHOWN ON THE DETAIL, THIS SHEET � ; ::;;��,�,,�,��,f,:'.',. 1i , n � � ,%'��'�: �­ -1- ­ I � __�., I 0 THE RIStR CRrST I I � ,",�:�� i OPQ " . __ DISTURBANCE WITHIN THIS AREA SHALL BE LIMITED T _r Z ,�, , "':.,�� 4 *.j. / 1_. I j 1� �- �_-`: -1-1, -­ CZ 0 06.00 0 ' DRY ' 0"CE 11 __1 .- - `1'7__��, �__,_ �"`' I le, _­_ � � � 1-:41, 11 � � , _�'�� I 1 1 j, I / INSTALLATION OF THE PATHWAY ONLY. CLEARING AND 0 OEWATIERING / 1_� 50 1_�� ,,- -, _� ��__, �_ , , Ifill i I � � "" __ _­­ _����_"�,�\ R_ an P I __ CONTRACTOR SHALL INSTALL ­',�', �\ \ - ��_ I i .�, I () C �.­�.­_`_­;:_,;.77T! � -1--_ -1- � I I ­L­'1_'_ I TREE REMOVAL SHALL BE LIMITED & ONLY THE REMOVAL OF . 407.00 , (,j - 4 �7 0 _'_,.,1____" �4 1 __ I f = " � \ 0 I wer * MRAGE I - ­­ 1_­_._­­_­­ __ "� �, 1�1 __ 1�� I I I f �� ,,,, PERMANENT SWM EMBANKMENT, - OL8.00 L .-,-,-..-.�.�-.--,-,.�11.1.11-l'"-ft�,�.-".-.�..��-� __ ­_ I __I '� __ __� _N, I i �, I Im ?I . 11 f I 1� I � PNDERBRUSH VEGETATION IS RECOMMENDED. I F-4 4 1 1 5 i'.1y 2 - ­ -, , I % \� - I i % ,,, EM'tRGENCY SPILLWAY, RISER & BARREL I (n 410 1­1 ; 1-1 ;I \ Z 1_� \ I I " i I I i 11 L "I j ,,I'-- \ 'F1 F // \ N\ , *k�, I � ­ i ­­_11 � � WITH THE CONSTRUCTION OF SB ftA. ? V) 0 0 . I , -1 / I 'D ,� ; __­ 11 / " ----- --- 1­4 . . \ ", --, ., I �"--VIODIFICATIONS TO T . V 410M 1 `741 1,346 \ 11 \ �,,�, f 11, _: � �_, I, � .1-1, � 'I,- � � I j . , � i � \ DEWATERING SMMEW CLEANDUT POINT I / I I " I ,�_ � 0 1 -, I , - � L. ." .I- " � . / 11 ORIFICE & SWM 1 S ARE REQUIRED, / -11 1\ � ; �k �, �_ X I 1� 44 � Ljj CL 1 7 I TO 34 C.Y,/ ACRE) \ I \ t,,\ i I / t I 11 i I 1 ,q,� 1 `Z-/ , � ,,I i, I-,N 1,__, -1/ ---'-' /_ ff ,�, ,�,\ \ AS DETAILED N THE PLANS. (' WET " STO11AGE REDUCED I " ,\ 1, / ) �F f I I� : �.�, '­,, I? " I \, STONE-LINED WA rp r1R WA YS - __ , 'I- \ � !V� t�,-- - 1�9 ", � 411.00 159,19 1,896 ", " I 11 ,-k 14., - I - I -",,, N 0 DRIFI I 0 V) 412.00 "I I I , I I ; 0 " � I I I I, I "Fl, I �__ S �, 1_28 2,508, 1 " / '1/ / ? "I � I ' ''' e I , __�� --� \ "N-1 � " I ,�j " _,_-­­---- I - j , ----./ I j __ J I, ' , __RN�6 ON __ I -___ � "' � ___ __ __ . 11 / �" '_ "' / / .el __11-1`1 I/ / I 1 ,�I,, v AIN. 30, "P kts - _ I ;1 / 11 � I I � ; S DP o- 6 .__ ----- // I ) 1 I ! I ,� F ,,I, IF, - 0� Q� 'O 414.00 _19571 ,1f. 866 T / X" / ___ / /�l Uj I - 1_�� ,/ 11 ---T., � - I-, - / I 41�INTRASir,V IJ�bNALLBE I 1� - I's k �""- � I T, "! '"'.-L,, I'l,", / � 11 t , \ �� PROPOSED EROSION CONTROL BLANKET - / �. % ­--l-', I / _1� I I �_, I "I i 416.0,0 .--- I Z -1, . __ , '� , �/ I - / I Uj -,I I \N/ 11 1_111 , � " E ANS ti M E N � `" -1 I �L I D 0 '221 -1 3 4 410 __1 I 1, / 11, <,A� I _�_ 11. , , i i - f . . I �/ , I / -, k �_,;/ �, i PEDESTRIAN PAT WAY SHALL BE / �t I % , r 5' �1�1 � I ,/ 11 , , I " I I If ___'_____ I ` �IUINCTIONALTHROUG�IOUTALL / / � \ I W / , I -1-1 , � 11 Z i '', I - ,�, t I 'L � I \ / P-.4 3: / / I \ "I I __", I / �_ I MATTING ALONG 3:2 SLOPES IN THIS AREA ------------* I � 11 I C I ­­ I 1-1 ___,_­­­-__ ­__­­__�11 , � I I i � I �` FOR STABILIZATION IN THE LOCATION S � - ". ", , 1 PIR 41 F "I " f / PHASES OF CONSTRUCTION. AT � / , , , I �, '__� '? � L1"1_1,__­ 11 -­ I - A " 1 f, _,� i . I I I, � __A7 - � i :111 I ­­11,11 OTECTED VIA DIVERSIONS TO Z I 1 418M '23 1 4 8 / \ ,/ ­­_ - � , ,___ . ___ - I I r S , U) 7,087 ' Calct.dations ass-ume 24" of silt build up ar the boftom of the bas'n. I I I 'A � � I ! "I < F-4 Is I � 11 I _ I I i , \ ` " . I z / ]z 11 � I 11 I /', , ,% / I ,1 W� � \ -,,,- THAT ARE NOT YET STABILIZED L � I - , / I "I � I I I ,I', i ; � 1, I 1,� , SEDIMENT BASIN #:1A & SILT FENCE ,,/ � ,,, I ; I / , NO �OINT SHALL UPLAN6�AREAs ,. / Y 11 , � - -12 F__4 , I , / I , ,,_. I/ 11 i I 11 4 1 1 -11 1. I I � I f �1� - -0 I ,I I i , I I . � I ,I \ ; � � � 1 f ,,, ,,, 11� �� L'', - /� � ; z i ,I - _ PEDESTRIAN PAtH I ! - 7 � F"=4 W 0 1 - � � � i i AIE DI,SCHARGED,,UNTREATED. ­�__ ---.--- ,­�,� I - , 11 " 1� I I, ", I I I, I I ,1­11 ON THE DOWNHILL SIDE, AS SHOWN. F � . / I � f, _' I f, I I ­_ __1'1_1' y � U -, j, / i __ � � . f I I . � � I I � \ -, 1, "I \ I, I/ __ 11\ N." k � 1�_ "D _f - /�,, i i k! / 'I I JI I __,_SHAtL BE PROTECrE 11 - f _� � � k ` ", 1, ,, '_�, \ , � i � f I I I / % VIA/ , / ,'* . C LIJ 1, - � 1, � ; � 11 f ; � , ; I I i i / __ '-- � �, ", 1`,,� L , � I f - j I / f - " J, = -0 wet storage: � - , r­4 2_ `� I I �,',) �,, - / - . I � /1 ­ / .; ___ - ., 0 , -1 I r � � I '� �j "' � I � � � I __;�_� I / ) ,!, � � ". __­ -, .- W , "N� � \ � k ­ i I r___9 I I f / -- -A I I A � ; SILT F1 � ,­­ �� = ------------------------------ LLJ L. � 1_1�__ I,, ____ -11, , i f I� f �1, ENCIWZN T E __ I ­ ­1 It I I I i I,-, i % ; I f I � / - ,_ (n I ,5r \ I � I f I I I f / / _'_­ � - CX wet storage required (cy) (67*0A) 888 design high waiter 416.34 ,_ - �t -1-1 �,_� N, , " , *,I I 111- - -1 �,,� r", I �__ i / ��4 Z4 00 / I; t / 7 - ,.,,,," DOWNWL_L`SIDE, AS OW111. 11 , -11 1>­�7­­­RIP RAP EMERGENCY -­ LU 0 � � \11 \ -, \ \ I ,� "I It �_­.N � , j �_, " " 11 p ? I j 1� 1 1 1 1� / I I " F � � = 1< " ,I 11 ;, \ \1 t i �1_ t "I / - 111 ! I � - 11 --- i / 1" _` f - d Ir < � . �, i i , / � SPILLWAY-SPILLWAY TO BE LINED I , dewate,ing orifte elev _1< A � , � ____ _0 __ __,__­__1____ 11 .A F � --,--- _� '7//", II 111 - - aton 414.00 top of dam (ft) I � , � \\ " ___ I I — =T ------,,I I" w I 11 \1' I �, � — a 1 418,00 1 ", >11-1. j I \ \�� I L____-_-_--_- - --------- ­­­1­11-1 I , I I U) �r IU 11 I \ ____­ k � 1 *__7 1 <1� M [ I ,,, 1 � -, I / / /,- , 1___' ,I'. , I I WIf H GEO-FABRIC AND RIP RAP TO / — — — F.- I � I � 1 '__4 11 / � 11 ,'� , � IIFEE� --- �::_ 1-i I i j � � .1 . ­1 i --- - � 1 � ; "I -� � � � I - 0 ,I 1-- 4 i ... ) / / 11 � 11 111NIMM111, / _�­' - I � I "I " i \ I f ,�� I ,_ f / �, / "_1 t . 111111 131. C wet storage provided at this elevation (cy) W66? top width of dam (ft) � �,,, U_ I\ / I/ _� I I, 10.0 , "' - z I , , __� \_1:x e4, ",- - ,,�,� � I 'L..- � I I I- \ " / � f/ / Flf 11ill / ( \ P�EVENT EROSION ALONG THE 8" 1 W < to - � � i /I! available volume before cleanout (cy) (34*0A) 451 bottom of basin (ft) / �� -- ,,�,,�- ,,,,, \ "I 11 ___._____ 11 " ; J! ( I / I 17F,� 1__' N I 111111 I'll i - >1 407 -I, I , F 11 C_cj � � / / "---" , , I i I BANK OF THE DAM a \ �, ,,I ,,�� f' 11 � I - . - '' I � F y / i , � / I -1 I i ) I ! i �_ � 1, I � - I I I �__ / -, I I I �17' 0) F I / I/ I I , i I I I I I - 1110= E / , r,f �, I i / , i I JF I fill - � � \ 1� I "I / I V- , 7 I I I � �-­ A, ,-,> \ , ..... i / - ' ,I I 1k, i , 'O / 3I , "" I / / - ,� cleanout elevation (ft) �, I/ '111\� "/ / �r I - �__ , 41&00 approx. bottom dimensions: 1901X6111 �t,L -I--," � I / �, f � � J I / i I L� �, 1\ I f ,I Y� I 4 PIVERSION DITCH - STORMWATE,R / �j ; $ == C: , f \ I _� / ! 11 / __ , f I '11� � ? 11 D G_ - distance from cleanout to orifice (ft) (> T) 1.0 � , / ,I` "" , \ I IF I I , r .... � : I I - � 0. upstream face slope: 2:1 1 / I / f, 1� , I - I \ I _"__________ ------ 11--l�-.---�,-�-.�-".".---!L,",-__"� I/ � / I ,I � I � I CPNVItYANCE CHANNEL " / /,- , � ,k I f ,/ =:= 1, :=__ - KEY IN FILTER a ­4 , /I \ -, I ", I ! . "? " FILTER CLO LIJ 0 4h, ; /%<_ I ("I e I 1_111_ _,___, I I T - == - - T z - " I / 11 CLOTH 6" - 9" K ­06- -,-- ___ " f / \ i 1' � , , I I I I downstream face slope: - - _____ If _/,� � / �. 4 I � / / f, /-DITC+i-SHALL BE CINED WITH RlkAP AS ,-/ �, I L i � � ­.­ 11 � .1 1 0� I I I f LL] 3:1 ,_,__ I I / I I i f .", � ,I ) , / I rr Uj Ld ; - i , � � I � t , I , ", - "" -,HE DETAIL, THIS SHEET/- --- / I . t f dry storage: ­11-I-11 ? I . / /" SH-OW '' NT i - I I / % I I kj�u � 5 � / - , � Z SEDIMENT BA SIN 00-1A � If I � I ,—,:/, H / / / I �� 7 // dry storage required (cy) (67*DA) 111. 6 " TOPSOIL -1--, / / I - "I i , 3 � I" '/" / \ .��_ / I ILL ce -, 11� , i � � I ­1 0 __ _. -, � � I 1 �, _/ � 11 _", ... I ..... ­­--l", ­­­_", ". / / " I/ Z I Ld 888 baffles: YES ,�,,� ". i , I 1 I f - I / / 7 -SHAPED WATERWAY WITH STONE CENTER DRAIN Uj , , I i I � j � � � f /_ 11 , I EXISTING GROUND NTS F I /9" I � I� ,I , I ,, V < I � (_ / - " I, moI / "I 11 principle spillway crest (ft) 415.39 AB length of flow, L (ft) 1 -1() '111,� ,/*,� I 5 I / � I . I � I i i /, / , ,�X, I 0I )) '' " , IF .r, ; � 1, ep - ) � _� U) 1i ", "I I I � / 'I / Z , 7 I ! J �, - I , , . ; NOTE, A GRANULAR FILTER MAY BE SUBSTITUTED FOR FILTER CLOTH. i z , 1�1 - , r ./ / / � `__"L . I i - I 1 1 I I I " \ '---,-" """ I, (D C) I , , � j" ( ,'e __j ­11-1-1-1.11, I I I , I � , I I � 1, , I , i " \ -_ ,/' _j dry storage provided at this elev@ition (cy) 1 0'73 effective width, We (ft) 194 - 72 " I. D. 21 " HIGH __ -�� . I � _ _­­­ I 1__�, / 'I / / , 0 � I , - I I I TOP OF DAM ELEV =418.00'110' ­­__ I'll, �11/ I I 1 1 kj 1 1 F " , , , ,�, \ \, " \1 \' -1 I I - I/ / , / 0 diameter of dewatering orifice (in) 6.0 L /We (baffles required if< 2) O�6 25 YR. S TORM TEMP. CMP TRASH RACK DEWCE _______ _. I , � I : It - " L -,, \ � ,�, \ , / ,I 0 Uj F - 1 i � � \ �, I � j � 11 IF 0 "' I I 0 11,'_ I\ Z �I, �,,­ � IF 3� , I I, F, I ,-, ­­" ,,, /I I I i 1.0' MIN. , ,/ / A IN , -",---- ____ _V ,A-.'�,.-]�I?,'Z� . , I I 1, � I - \ ,� ) 'I 1, , _­_1 -- 1\1 / / i diameter of flexible tubing (in) (orifice+Z') 8.0 -ELE � �- 4 Ld -,34'— — — — ........ ::,.., ,�,') - I I �, 1 � I ; i , 11 I -1,:"N ,"", >1 , , "N = ____50' EMERGENCY SPILLWAY 1.� \ "I 11 , � I I ,",�� I I I I/ / / � -11 � I I / L. - s I I �, i ; I i I ,� / 0 .. �, 1,_ / i 11 � \ \ \,-\ ___ , I I � C\j ­ N11 �:::::::��::`K.,­ � �__ > ;::.- I I \ \ ,, / � j I �f 1--,, / / EEI! , "I � � 400 ____ / 0- collars: YES I - .. . - - CREST ELEV=416.25 I-,'. " / 11., I � _% ,�, '.. - 0 " - , i X N�' �) � � I 1, � � , �", / , 1% / . I x ,��.--'.�:� i i I �� I, .j . . . . . . \ I i 0 t - � vr . ,i;-:�!� .���� I � ,/ " � I � 11 � !� F , 11__� ,_11f / � , 1�, 'I, , � , ! I� � 11, '11, � /. I I 0. I il I , -, I / ., __* � i I i I� ! I i :; � � 1, . 1, = — — — — — — ,'i " " . !� , I , ,-,.,. �", . I W I , � I 'i, -4 — 7 As':x- 11 � I ( a) :i:....:: � I i � , - __ = ..:--:��.','M�:��:��:]:�.. �.. . - I'll, 'I_'r 11 ; I ,­ - ` ( / / ,.-i- .. �� I 'IF __ --,-"- I . , C (use 0.45 for bare earth) Ill DR Y VOL UME EL E V I . ,.,,--.�ii '-,-.-, I - - ... r�-` ... . 'I I:--- I I 1- RISER TOP ELEV=415.J9'AB �.' "Iiiiiii�-'.!i�i�i�-i����]��.,� F , Q , runoff: depth of water at spillway crest (ft) 1 1 � 95 � 48" DIA. CL. /// RISER / , � 1 ,3 � � '" I C> / -1 1 :�_9 A ,�� � 11, ' LIJ �,§�.. \ U ; _1 I A .."... :::;:K:���.�'.-f.i%�.� � \ / L LU .?: : I _N1, � � ! , - I -t-1 , i f I ..". . �� � i �, '- , 3 0 0.45 slope of upstream face (Z-1) 2 - 11111'..*fL , � r , - / q- %-,:::::::::::::��,,:I "" 11 i- ... ,�� L, I " " ,_ I I , / 1, 2/3 W 11 _j :3 :111 REQUIRED = 41321' .`� -��-1111�%, .� 1' SCARIFIED KEY FOR / '% 1 I 'k I 11 �, co __ �' 1 1 � 1 1 __ I � -.��§��i�.' -f -1 � � I i i I �; ; ? I ; II-_ () tc (min) '' % \ I i �! � ; I �� ) /� / . ? �_4 X I - 11 F V , ri ! I , " - - 12" I - \ \ � � -11 12 slope of barrel (Sb) 0.5% I -11: � � I �'..�����i�ili�i�i.,..�-��,�.,�������ii!�l�!i�i�i!:::::::::::::::::::::::, I """ " SOIL COHESION \ .: - ..... I I.......................��..f.�.�.-."..--���i�iLi 1-2, z ii / z f 0 .. I � -------------------- -:--I I I CONTRACTOR SHALL INSTALL NEW fSK."..".., ....... __ 1.1-* I \1 � 'i �, I , 1 4 ,f b �_ I 2yr 3.8 ,- 1. -I ---- I- : 1. � /� - Q 2yr 22.7 length of barrel in saturated zone (Ls) I--:----r I �11 I I I I I "I I / __,� I----- DEWATERING DEVICE. SEE DETAIL IN 11 I I \ � I . /, / //,", � i cu 0 r I, I, i , � ! 1 1 � I � I I - - -C _ 0�.-',.-',.-',.',.-',.' - � - ...... INV OUT= 404.0' I I A 7 , (_' I e I I I i�7;= LU .'.".'.'.'.' / I', 'IN, i ! � I I I I......... -, k .... . � :. I- = , .141�_ 1 25yr 5�6 Q 25yr 36.7 number collars required ;�!-1 ON SHEET 3 FOR DESIGN. SEDIMENT I W..... I / 1 4 � __ � __1_1 �'/ , � ",-/,, I d LU 0 I IF, � \ , j / I" , ,Z � 2 is I, 1 I 1 �, 2 ", , . I i E3 V CLEANOUT ELEV. XISTING GROUND . \ \ I "' , � V; * ." " - E�H=7--F Ce X =413-00' \ - I I ,j , , � � - I � Z 11 �!! __ ", - I ; i I I I //�, ,I // I llmqj,� - 0- U) co - 'T- - =: L - - I - I -) .,� ill I 1 11 -A 4I LT _11i.L - -- I FL�-`-T -Ir-'"T Tr-`-Ti 1H :::: =I I ILL ­1 // \ _\ -I-"- , I � / / . \ 1-11 111111 LF 1111 dimension of collars 5L.Zx5.2' - ----'Ti r--'-- 11- _,�, T I � \1 I � I M ( r ------- ---I,,, - 18" C principle spillway: 0 " COMPA C / _A " ,�,� / " / z 111111- - _ ''I'll, 11 JOB NO. ID MIN. J Ij i I \ ­,_ �� _Z 0 � , , F k I'// \ / -==I[[ I 11 ii 11 I , \ _11.. Z ­0 I / ,!" !", ,� I i 11 � I . � i .1 ! 1, 7­ E /1. I, \ -, I % ') I S'"ALE , -,,- � I �� _0 _____ rfL_ - r---f / GRAPHIC ' 0'�� s.­ 1 / I 11 \ 1f/l ,,//11 � . 0 �, available head (ft) 0.95 emergency spillway: YES SOIL OR A GGREGA TE 0 VER OUTLET PROTECTION ", S %,, - - , I I I/ I I " , 4 �,, XII' / / \ Z M ill , , - V diameter, riser (in) 48 AB required capacity (Q25-Qp) (cfs) 7.5'X75'X114" THICK GALV. / " - 5- I I " , /1" I ? — ' 17 \ ""- A , �- I I I � I I 1111111 7== KEY IN FILTER --� -0 61 . e IF f VDOT CLASS fl, EC-1- \ \ v . i I / / / �, , 11 I I / .11. i . � I � ? I ,, � f, I I I, 5 spillway capacity, Op (cfs) STEEL BASE PL A TE, OR CLAY ORED DAM - ...... . ___ ��t i m I I I 11 , �' I 33 40 0 20 40 \ - I Im I I 1� ? I "I FILTER CLOTH - - : I I � f I I - bottom Width (ft) 80 1 1--__ I , i / i , � 50 RIPRA P W/ Ik �__ 160 '10 M I i I I ? i I 1, � � I � SCALE .2 1 1 ! I FT C U UPSTREAM TOE OF DAM 8'X8' 18"'D CONC. KEYED INTO T E I / I I I — I \ -.1--'. I '.,t� 01 f i � / / / 1/ / / / i i 0 diameter trash rack (in) "72 slope of exist channel (ftlft) 33% x GEOTEXTILE FABRIC 01 ; it% I 11 . % ( I W / - I, , iI (n ELEV = 407' (ASSUMES EXISTING GROU\lD I , I I /I I , ! � 11 I FOUNDATION W/ RISER & I F, , � / I , I � I I N / 0 1 1 barrel length (ft) UNDERL A YMEN T 11 ; I ; I I I " ", I � 1 =40 � � I � �, / I I - I " e f ,,, 1 / -0 DDED 6"IN I - 11 I � I I I I ; . 84 minimum length of exit channel (ft) 10 24 " OF SIL T BUILD UP) BARREL EMBE , = � � � . I � I f I i I I I I I, � ; I! \ i r_ � � . head on barrel 1hrough embankment (ft) 24" CL. Ill RCP W1 = 6' W2= 14' .1 . i I i F, - ; / I i � I \ V 1 1, 0 A B crest of spillway (ft) 416.25 CONC. PER VESCH J. / I 'I 4 / i ir � � � ; , � I 1 1 � I I � I f 11 11 " I I U) ' /I ( IN FEET ) ' I I I I I I I /I 11 ", , � r_ diameter of barrel (in) L=84', INV.=404.39, Lc=12', D=2.�� ' � I/ / I` f � / i .1;\ I , 11 t , I PARABOLJC WATERWAY WITH STONE CENTER DRAIN SHEET NO. . I � I i""n � � D , 24 (2) 5.2 X 5.2' GALV STEEL ANTI-SEEP COLLARS k / I � / I , I I I'll � __'),� i I I - I - I � I . r � j 11 I � I F � � - 1 inch = 40 ft. - % I- / ; ! I 11 e � �, I I , , i , INV.=404.0', S=0.5% " � � "', I ,'I � I I ; z I I � 11 � - e i "I I � 11 � i � I 'I t I ;I - I I i ; 11 i 0 - - , 11 1, I � 'A i � , 1 � I - 11 , ! i � NOTE.� A GRANULAR FILTER MAY BE SUBSTITUTED FOR FILTER CLOTH, 0 mmmmmmmomin � I i If __ 4 0 __ . = - - I �_ 6 Z M Ld Z 0 Z 0 0 0 0 0) 03 C 0 0 :2 0 0 CD 0 0 L_ 0 0 0 3t C ::3 0 Ld Ld 0 Z LJ V) _J 0 0 0 CD E 0 0 01 c .. .... . - - - - - -------- . . . ....... PRE-DEVELOPMENT General Construction notes for Stormwater Monaaament Plans 1. All dams and constructed fill to be within 95X of maximum dry density and 2X of optimum S hort Version BMP Computations For Worksheets 2 - 6 be A Inf �ow Hydrographs Basin In ut Data Routing Method: Storage- indication SCALE: I"=100' Imanagement 2 -Year, 24-hr Peak SCS Storm Event BasinFlow printout 2-Year, 24-hr Peak SCS Storm Event moisture content All fill material to approved by a gootechnical engineer. geotechnical engineer Is to be present during construction of dams. Albemarle County Water Protection Ordinance: Modified Simple Method 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 facilities; conversion Is not to take place until the site Is stabilized, and has been obtained from the County erosion control Inspector. Plan: SWM FacAlity #2 Water Resources Area: Devek)pment Area 0 ------- - -- permission - ------ Area (acres) :L8.440 inflow (cfs) 35.839 at ii..96(hrs) CIN 78.9oo INPUT: discharge (cfs) 3-17o at 2.2-56 (hrs) . ....... I. --- - - Preparer: Type IFPnoj-eft . ...... FGM. PIE Date: Wtersthed Summa:ry 02-Nov-1 2 SCOTT R. COLLINSZ 2 water level (ft) 414,138at 12-56(hrs) - - ----- rainfall, P (in) Basin: Belvedere Phase 11 Type III Retention Basin 3.700 storage (CY) 4682-713 Timent Pre Po v U No. 35791 time of conc. (hrs) o.i667 . ..... .. .... . . ....... . 9 Contour Areas time increment (hrs) 0.0200 -io-Year, 24-hr Peak SCS Storm Event ......... . - - - - ---- -------- . .. ...... NW' ....... NV­ N D.A. #1A 15.f3fi Project Drainage Area Designation SWM Facility 92 (Proposed Type Ill Retention Basin. or facility w! equivalent removal rate) time limit (hrs) 30-000 Elevation(ft) Area(sf) Computed Vol.(cy) i nfl ow (cfs) 69.248 at i-i.96 (hrs) .... ......... D �A. #1B 3.99 1.1 I ifudge factor 1.00 405-00 8574-00 0.0 discharge (cfs) 20.26-1 at 12.:16 (hrs) o6.00 . . ........... .. . . ........ . . .... routed true 4 9545-00 335-4 water I eve I (ft) at :12.3.6 (hrs) Tata 1,-- 19.55 W. I �ar. L storm pollutant export in pounds, L [P(Pj)RvII2 I I C(A])Z72 Rv mean runtoff coefficient, Rv 0105 + 0-009(l) 01VAL 416-152 . ...... -- - -------------------- ........... ...... o8.00 iii6.6 11582.00 peak flow (cfs) 36.oS 4 storage (cy) 6250-927 . Pi small storm correction factor, 0-9 -10-00 13741,00 .4 4 2053 peak time (hrs) 11-950 Project Watershed Summary (2-Year Flow) I percent imperviousness 12.00 i6149-00 26o6.3 ---- ---- volume (cY) 4249-383 4 1 oo-Year, 24-hr Peak SCS Storm Event r, 4-12.00 17158.00 3223.0 Pre Po st t F, annual precipitation, 43" in Albemarle -Development -Developmen i nfl ow (cfs) -i36-353. at :L3..96 (hrs) :Lo-Year, 24-hr Peak SCS Storm Event 414-00 19573-00 4 582.4 discharge (cfs) :130.207 at i3_98 (hrs) ...... A project area in acres in subject drainage area, A = 8.44 D. A- tt 1A 4.83 cf s 3,17 cf s ... . . . . ...... . C pollutant concentration, mg/I or pprn target phosphorus -i8 4i6.00 22135-00 6126.2 Area (acres) water level (ft) 43.6.899 at i3..98 (hrs) .440 418.00 23148.00 7803.2 D.A. #1B 1.39 cf s 1.96 cf s f factor applied to RR CN 78.9oo storage (cy) 6871-109 Type 2 ......... . .. To ta I;- 6.22 cf S 5.13 cfs V required treatment volume in cy, 0,5" aver imperv, area A(I)43560(0.5i12)127 Start-Elevation(ft) 411-00 VOL(Cy) 26o6-31 rainfall, P (in) 5.600 RR required removal , L(posti - f x L(pre) time of conc. (hrs) o.i667 %RR removal efficiency RR10'01L(pGst) time increment (hrs) 0.0200 Proje ct Wate rsh ed Su mm a ry (10 -Year Flow) time limit (hrs) 30-000 5 Outlet Structures Outlet structure 3 TT..... -D -Develo Impervious Cover Computation (values in feet & square feet) Pre evelopment Post Item fudge factor 1.00 Outlet structure o Curve routed true D.A. #1A 22.16 cf s 20.26 Cf s ..... . pre-development Area post-development Area Orifice name: Anti-Vortex Device peak flow (cfs) 69.659 multiple 2. D.A. #113 5.90 cfs 4.18 cf5 Reads & Sidewalks sl:Roads & Sidewalks Length Width subtotal name: Low-Flow Orifices peak time (hrs) 11.950 o.o87 415-500 area (sf) I rive rt (ft) 7 Farrow, Road (Proposed & Future) 9,625 To ta I;-- 28.05 cfs 24.44 cf s 1325 45 5 Shelton St. Z volume (cy) 8210-756 diameter or depth (in) discharge into riser 4.000 file: thirtysix.txt a (Future Shefton & Dukes Include( 615 43 26,445 250 43 10150 Griffen Grove (Road X) 0 loo -Year, 24 -hr Peak SCS Storm Event width for rect. (in) 0.000 coefficient o.600 ------- L _m"Wmw - - . - - MR' / join Barnett St (Future Barnett & Isefta included) 625 43 26,875 A rea (acres) i8 .440 Outlet structure 4 CN 78.9oo invert (ft) 411-000 " i , Colbert St (Road G) 39 112,675 325 L) Culvert multiple Type 2 4 name: Barrel ..... . ..... ........... ...... Dabney Grove (Road R) 175 43 7,525 RETENTION BASIN REQUIREMENTS: Spe a rs Alley (Alley i) 3,00 20 6-000 LLJ discharge into riser rainfall, P (in) 9.100 multiple time of conc. (hrs) o.:i667 discharge out of riser Outlet Minimum Forebay Volume= 0.25 inches per impervious square ac� Miles Phillips Alleys (Alley K & L) 675 20 13-500 Future Roadays Fowler, 425'of Winn, Z 0 structure i. BELVEDERE PHASE 1: time increment (hrs) 0.0200 D (in) 24,000 --- - Orifice .... .. (575'Gf Forebay Depth to range from 4-6' 75,825 239,220 250' of Phillips& 8001 of BIv. Bout time limit (hrs) 30-000 In (in) 0.000 factor 1.00 name: Mid-Flow Orifices DEVELO PMENT -- ---- Ifudge Impervious Area 388,720 sf Residences no. Sq� Ft subtotal Residences M Sq, Ft subtotal > ILILI routed true area (sf)l o.n.96 Length(ft) :Loo.000 flow diameter or depth (in) 6.000 Slope 0.0050 ...... 36 1,500 54,000 Minimum ForebayVolume- 8,098 cf Lots 146- 181 . ............... Lots 182-1 96 15 2,100 31 I)f )0 peak (cfs) 137.16o time (hrs) 11-950 width for rect. (in) 0.000 Manning's n 0.013 Water Quality Volume 17,580 cf F utu re Lots 40 1,600 64,000 149,500 peak In coefficient o.600 let coeff. Ke 0.500 volume(cy) :16i67A.69 e, Water Quality Volume Require� Parkinu Lots Parking Lots '70,320 cf invert (ft) 4:14-000 Equation constant set 3 Invert (ft) 404-500 G F Tc::�,.o.i�hrs DA #3.A (65% Removal= WQV x 4) multiple 4 discharge into riser ---- --- ioo' QLF w1,,A­TEI_F_V,- -,,,6 6 a c 1c=0 'Gravel areas Gravel areas :x 825�,CF w[A CN=I; Area of Area of Wet 0-70 x 0.70 .......... Elevation Volume Elevation Volume Structures Area no. subtotal Stru ctures Area . ......... Outlet structure 2 Weir C=" TC =-0.22 hr&�­ Forebay Pond no. subtotal (Cf) (ft) (Cf) Contours (sf) Contours (sf) name: Emergency Spillway length (ft) 50.000 Itively-grazed side angle 71-570 coefficient 3 .300 . .......... ........ . .. .. .... Actively-g razed pasture & pasture & 405 1,245 0 405 8,574 0 yards and cultivated turf 803,246�,xO.08= 64,260' yards and cultivated turf 414,526 :x0_08- ... .. .. . .. . . .. invert (ft) 4 -i6.250 multiple 1. 406 - 1,526 1,383 406 9.545 9.055 iActive crop land Area :Active crop land Area 0.25 0 x 0.25 ROJECT 408 1 33 5,025 408 11,58- 30,149 ... ........ .. .... .. ........ discharge through dam umits Other Impervious Areas Other, Impervious Areas 41C 410 13, 55,442 0, 2,79, 9,938 r4l LU .. . . . ..... ---- - - 0 411 0 9,938 16,149 70,370 Impervious Cover 411 8% .. ....... .......... '(pre) 412 0 9,938 412 17,158 87,021 V �Rv(piqst), 123,726 414 0 9,938 4,14 -19,573 1 O�52 651 -1 ---------- INew 416 0 9,938 416 22,135 165,408 < 4 is .1 /"" ,, -_ / Development (For Development Areas, existing impervious cover <= 20%) 418 0 9,938 418 23,148 210,687 C f (pre) 0.23 2232 50.72 2840 56116! Development Arc U01 C= 0.1 LBhr�. 4V -10Q: LF w/ A,.,E LEV.= 3.2qW I.................. -------- ---- ce ------ (Tc=o.i6) 4W# 465'CFw[A-F_LEV.-' 4r# I- mill- values CrC=0.02) IZ ---- - -- - Alf) I11W N IBASIN TOP OF DAM WDTH= 10.0'ATAN ELEVA TION= 418' Z Z LLI .. . ........ . .... . . . ......... .. - - - --- --- Z ___.=:,: ........ . . .......... ..... ...... ............ I0 # FACE OF RETAINING Z . . .. ....... .......... Z -A.--,#:L B D. -alt. ITYE + HANSON CONCRETE AN77-VORTEX WALL, EXPOSED BW IRA SHRA CK. SEE SHEET 1 1 OF THE 2 & 10 AR STORM ELEV=412' & TW 00-YR PEAK WSE=416.90 10 R PEAK WSE=416.15 FINAL S17E PLANS FOR ADD177ONAL EVENTS DO NOT Y 0 9-4 Ce Z U Z STING SW" FACILI kk-00 ICN= ELEV =426' INFORMA 770N. CRES T THE 2-YR PEAK WSE=414.14 MWERGENCY SPILLWAY U LU In LL 0 U W TTOP F 7ATIQN 6F 1�; ;t,� 1, ____ ­_ _" OF FOREBA Y DAM -ST 1. 1 O' OF FREEBOA RD BASIN TOP OF DA M -Y -4 8 RCP MUL T AGE RISER. 10 W 100 R PEAK WD TH= 5' AT AN DURING THE 10 WSE=416.90 WIDTH= 10.0' AT AN ELEVATION= 410.00 FOUR 04" LOW-FLOW ORIFICES S TORM E VEN T ELEVA T70N= 418' lo AT ELEV 41 1. O' FOUR 06 Z 0 1-4 Z 'FACrI_I4 Y/ ORIFICE COEFF.= 0. MID-FLOW ORIFICES AT FOREBA Y SPILL WAY CREST RIPRAP FILLED GABION ELEV=414.0' & RISER TOP LU Ce UJ > lBA SKE T FOREBA Y SHA L L BE ELE VA RON= 509. 00' ELEV AT 415. J9' In V) FT--�ROJE�_T 41 ISIDES if W Jim /* KEYED INTO 774E SOIL A T THE WEIR COEFF=J.J BOTTOM & ALONG THE SIDES. 4 CL. III RCP BARREL TRASH RACKS SHALL BE INSTALLED ON WEIR COEFF= J. J OF GABION BASKETS SCALE: 50' SHALL EXTEND A MINIMUM OF ALL ORIFICES IN ACCORDANCE wl THE 100 LF 0 0.507o ELEV L Z b..4 > 11.1 T_1JMIT� IN Of 10 I/ in 111111� 0, INV IN= 404.J9 1"=5' (V) X INTO THE EMBANKMENT DETAILS SHOMV ON SHEET 11 OF THE 1-=50' (H) 415.0 RIPRAP LINED FINAL S17E PLANS, OR EQUIVALENT. INV. OUT= 404.00 EMERGENCY SPILL WAY GRAPHIC SCALE IO" CREST ELEV= 416.25 SCALE: SCALE: 100 50 100 200 4 ELEV L L ELEV lsl=5o 1 $1 59 (V) j0MGDVCYSP1UWAY V) 405.0 FOREHAYSPLLLWAY 405.0 L 1"=50' (H) 1"=50 (H) I4x4x2DEEP IICONCRETE REINFORCED IN FEET FOUNDA 77ON wl PBEVCLPLESPHLWAY A I inch 100 ft. BARREL EMBEDDED 6" INTO THE FOUNDATION In Ln 71/ ... .. ..... -DEVELOPMENT POST NOTES: ---------- - WATER QUALITY FOR THIS PROJECT IS MET THROUGH THE PROPOSED TYPE Ill RETENTION .......... - - ------- S111LE: 1"=100' 100 YEAR CD & PROVIDES A REMOVAL EFFICIENCY OF 65%. IN ACCORDANCE WITH THE APPROVED IBASIN a6r4 -- -1, I "I /,"� W. S. E. 416.90 HANSON 1 //',,'PRELIMINARY PLANS, THE PROPOSED FACILITY IS OVER DESIGNED TO COMPENSATE FOR LOTS:i.82-ift BEING RELEASED UNTREATED. THE REMOVAL RATE REQUIRED FOR THE 10 YEAR CONCRETE MIN REQUIRED FOREBA Y W. S. E. 416.15 A N T1 VOR ULTIMATE BUILDOUT OF THIS DEVELOPMENT IS 1;6% & IS THEREFORE PROVIDING AN _Z:7 --- --- VOLUME=9,096cf TEX 2 YEA R .......... ...... ADDITIONAL 9% REMOVAL RATE ABOVE THE MINIMUM REQUIREMENTS. THE FACILITY IS ALSO OVER DESIGNED BECAUSE THE IMPERVIOUS AREAS BEING RELEASED FROM THESE . . .................. . . ......... LOTS HAS BEEN ACCOUNTED FOR IN THE WATER QUALITY VOLUME & DETENTION FOR THE FOREBA Y VOLUME TRA SHRA CK W. S. E 414. 14 10' WDE TOP OF DAM PROV1DED=9,9J8cf MIN. REQUIRED WQ V Z FACILITY. .... . ..... --- ------- N ELEV= 41&0 (4x) 72, 76 76 f V THE DETENTION REQUIREMENTS FOR THIS PROJECT ARE MET THROUGH THE PROPOSED . . . .............. . ...... . .... . ...... ISW`M FACILITY, AS WELL AS SWM #4 SWM #4, AS DESIGNATED BY THE ORIGINAL 4 WQV PROVIDED=72,866cf WEIR ELEV= 416.25' REZONING PLAN (LOCATED IN BLOCK 3) WAS DESIGNED TO HANDLE SOME OF THE - - ---------- L N 50' WIDE RIPRAP WEIR DETENTION REQUIREMENTS FOR THIS PHASE. BECAUSE OF SWM #4 & THE OVER ......... . . . ......... . ... .... ---- r DETENTION PROVIDED IN THE PROPOSED SWM FACILITY, OVERALL DETENTION IS . ....... . OU7FALL CHANNEL W1 CY) I. . -- J. 1 SIDE SLOPES. ACHIEVED FOR THIS DEVELOPMENT. 5' WDE FOREBA Y TOP UJ . ................. OF DAM ELEV= 410 MAXEMBANKMENT HT=14' (418-404) iJL I......... ...... . .. co M. W. S. E. 7** OF r 10' AQUATIC BENCH 411.00' . . . ........ PONDING UJ - - ------- --- - ----------- - - ---- ----------- - DEP TH --- - ----- --- ---------------- -- --------- ------ FUTURE NEIGHBOR 7' HOOD I "r ---------- ORIFICE COEFF. 0. 6 . . . ......... ----- ---- - - --- BOTTOM OF C) 0 CENTER-SIT . ... .... - - ----------- FC\J -E 7 --- ------- - - ------ - ----- - -- - - --------- IV FOREBA Y EL E V -------- - -- 405.0 0 < I- F48 7 F .......... - - - --------- - ----------------- -------- ----------- RCP MULT-STAGE RISER. MIN. 8 WIDE @ TOP & 13' 5' WIDE FOREBAY DAM & io'WIDE FOREBAY -FLOW DEEP IMPERVIOUS CORE & FOUR 04" LOW SPILLWAY SHALL BE CONSTRUCTED OF ORIFICES AT ELE V 41 1. O' _2 CL. /// RCPBARREL CUTOFF TRENCH WITH 1: 1 > Ld i A 13ELVEDERE 'm, ....... ...... ..... . ........ ............. .. . ....... PHASE I DEVELOPMENT f __ GABION BASKETS WITH VDOT #3 COARSE FOUR 06" MID-FLOW ORIFICES 100 LF 0 0.50% SIDE SLOPES. SEE DETAIL ON BOTTOM OF AT ELEV =414. 0 & RISER TOP 39 SHEET 1 1 OF THE FINAL SITE UNDERLAYMENT SHALL BE INSTALLED, RETEN77ON 404. 00' PLANS FOR ADDITIONAL WEIR CREST ELEV.= 409.00' ELEV A T 415,39' INV OUT BASIN= 405.00 INFORMATION. 1:3 Z71 BASKET FOREBAY SHALL BE CONSTRUCTED ON A TENTION BA SIN C7J 0 66 IGABION FT r io' WIDE x 3.'DEEP STONE FOOTER. FIRST ROW OF GABION SrALE: 1 4 0 HORZ. UJ X BASKETS SHALL BE KEYED INTO THE BOTTOM OF THE POND i'MINIMUM IN DEPTH -4 VERT. F- G! I0 0 vi, RETENTION BASIN DETAIL, . ............ < ILLIP -*F�OR (-QRA[NA SFD1V4DE LU BUILD.ourr _PROPOSE6 VA4 OL I& 0 ID.A. -76 # (DETAINEDi 410.00\ W %3CT -8 4L . .......... --LOT1% C/) LU LU t6i 7 LOT 3.96 I........... ................ I F 1 LU W LU Will I.A. C/) 0 r Vn LID IITUJ ............. . . .......... DA-B NE ENOT TED LOT 154 By ISTIN( RM DRAI C6T %6!�, QUAZ,--IZ < W ........... L .......... .. V.Owj C) UJ C) C\1 ITV UJ IL 11.11 I11.1 4"\ CL III 0 CP Ce X: I4EV.=� HARRE TOP JOB NO. 112059 LOT )APHIC 4f�` PROP(�SED 1,,O G RADE D, PROTECFON VDL11 $TONE SWM 7LE �SEE wl GEOIT -,I E N PEr SCALE ROAD. RjrPRAP�,LINEID I�IPRA#% AC61ESS DtMLA rmL FA RIC UN1, 100 200 101 EMER �POSTIDEVEI/OPME�T" STATE Y,§PILLW 0=14', La=12' D=2. -7t -�_JGR FU14flL ALIONMENT,' -V Wy $:I SID* SLOPOS. SCALE CRE$T ELEV.= 416'251 AS SHOWN Te= 0. 6hrs.,-,,, AV.1477.a, IELE IN FEET -FWW ORIFICES AT NOTE. SEE LANDSCAPING PLAN FOR SHEET NO. 1 inch 100 ft. A41D -�&W OAlkICES AT RETENTION BASIN PLAN77NGS ELE-V=414. 0 & RISER TOP & VEGETA TION. 5 I'�Tc=o.o2) T ELEV A T 415. J9' 6 Z M Ld Z 0 Z 0 0 0 0 0) 03 C 0 0 :2 0 0 CD 0 0 L_ 0 0 0 3t C ::3 0 Ld Ld 0 Z LJ V) _J 0 0 0 CD E 0 0 01 c