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Home My WebLink AboutWPO202100034 Plan - VSMP 2023-01-10GENERAL NOTES OWNER: TMP 04500-00-00-068C2 TMP 04500-00-00-068EO VICTORIAN HEIGHTS LLC VICTORIAN HEIGHTS LLC 455 2ND STREET, NE, SUITE 400 455 2ND STREET, NE, SUITE 400 CHARLOTTESVILLE, VA 22902 CHARLOTTESOLLE, VA 22902 DEVELOPER: RIVERBEND DEVELOPMENT 455 2ND STREET NE, SUITE 400 CHARLOTTESVILLE, VA 22902 ENGINEER: COLLINS ENGINEERING 200 GARRETT ST, SUITE K CHARLOTTESVILLE, VA 22902 (434)293-3719 TAX MAP NO.: 04500-00-00-068C2 & 04500-00-00-068EO TOTAL AREA: TMP 45-68C2: 2.710 ACRES (INST. #•202100020647) TMP 45-68E0: 2.211 ACRES (INST #•202100020645) TOTAL ACREAGE: 4.921 ACRES ZONING: R-15 RESIDENTIAL, CLUSTER DEVELOPMENT & BONUS DENSITY FOR AFFORDABLE HOUSING. IN ADDITION, THE PROPERTY IS SUBJECT TO AIRPORT IMPACT OVERLAY DISTRICT & STEEP MANAGED SLOPES OVERLAY DISTRICT PROPOSED USE: 88 SINGLE FAMILY ATTACHED & MULTI -FAMILY RESIDENTIAL UNITS (34) TOWNHOUSE UNITS OF WHICH (11) ARE AFFORDABLE DWELLING UNITS (54) MUL TI-FAMIL Y RESIDENTIAL UNI IS (ONE & TWO BEDROOM UNI IS) PROPOSED USE ACREAGE: PROPOSED LOTS: 3.286 ACRES (CONDOMINIUM & TOWNHOUSE LOTS) PROPOSED OPEN SPACE. 1.228 ACRES PROPOSED RIGHT OF WAY DEDICATION: 0.407 ACRES DENSITY. ALLOWABLE BY -RIGHT DENSITY: 15 DU/AC + MAX. 309 BONUS DENSITY INCREASE FOR AFFORDABLE HOUSING ALLOWABLE DENSITY.- (4.921 AC - 0.407 AC (R/W)) x 15 DU/ACRE x 309 BONUS INCREASE 4.514 ACRES (ACREAGE OF SITE) x 15 DUA x 30q BONUS DENSITY INCREASE = 88 UNITS ALLOWABLE DENSITY: 67 BY -RIGHT UNITS + 11 AFFORDABLE & 10 MARKET RATE UNITS TOTAL ALLOWABLE DENSITY.- 88 (19.49 DWELLING UNITS/ACRE WITH ROW DEDICATION) TOTAL PROPOSED DENSITY: 88 UNITS (19.49 DWELLING UNITS/ACRE WITH ROW DEDICATION) OPEN SPACE: TOTAL OPEN SPACE REQUIRED (CLUSTER DEVELOPMENT 257.) 4.921 ACRES - 0.407 ACRES (R/W DEDICATION) = 4.514 ACRES (SITE ACREAGE) TOTAL OPEN SPACE REQUIRED: 4.514 ACRES x 257 = 1.129 ACRES TOTAL OPEN SPACE PROPOSED: = 1.228 ACRES (27.27) OPEN SPACE TO BE OWNED AND MAINTAINED BY THE HOMEOWNERS ASSOCIATION. ALL OPEN SPACE SHALL BE RESERVED IN A DEED FOR THE COMMON USE OF LOT OWNERS IN THE SUBDIVISION AND DEDICATED TO THE HOA. TREE PRESERVATION: NONE REQUIRED WITH THE DEVELOPMENT PRESERVED/MANAGED SLOPES: NO PRESERVED SLOPES ARE SHOWN WITHIN THE LIMITS OF THE PROPERTY. 4 SMALL AREAS OF MANAGED SLOPES ARE LOCATED ON THE PROPERTY AND SHOWN ON THE EXISTING CONDITIONS PLAN SHEET BUILDING HEIGHTS. • NO MINIMUM BUILDING HEIGHT & MAXIMUM BUILDING HEIGHTS SHALL NOT EXCEED 65 FEET. NOTE, BUILDINGS GREATER THAN 3 STORIES MUST STEP BACK A MINIMUM OF 15 FEET AFTER THE 3RD STORY OR A SPECIAL EXCEPTION SHALL BE APPROVED. A SPECIAL EXCEPTION REQUEST HAS BEEN SUBMITTED WITH THIS SITE PLAN TO ELIMINATE THE BLDG STEPBACKK, TOWNHOUSE UNITS- 35' MAXIMUM BUILDING HEIGHT (3 STORIES) & EAVE HT=29.67' MULTI -FAMILY UNITS: BLDGS 1,2 AND 3: 60' MAXIMUM HEIGHT (4 STORIES) PROPOSED HEIGHT = 48' MAXIMUM BLDG HEIGHT (EACH UNIT) + PERGOLA BLDG WITH PERGOLA MAX. HEIGHT = 54, NOTE- PERGOLAS SHALL BE LOCATED ON THE INTERIOR SIDE WALLS AND WILL NOT AFFECT THE OVERALL MIN. SIDE SETBACK. SETBACKS: FRONT: 5' MINIMUM (18' MINIMUM FROM R/W OR EDGE OF SIDEWALK TO GARAGE) AND 25' MAXIMUM SIDE: 5 FEET (NOTE: ANY DWELLING UNIT THAT EXCEEDS 35 FEET IN HEIGHT SHALL E SETBACK 5 FEET PLUS 1 FOOT FOR EACH FOOT THE DWELLING UNIT EXCEEDS 35 FEET TOWNHOUSE UNITS- 5' SIDE SETBACK CONDOMINIUM BLDG: 5' + (48' - 35) = 18' REQUIRED MINIMUM SIDE SETBACK REAR: 20' MINIMUM. NOTE' COVERED PORCHES, BALCONIES, CHIMNEYS, EAVES, AND THE LIKE ARCHITECTURAL FEATURES MAY PROJECT NOT MORE THAN FOUR FEET INTO ANY REQUIRED YARD PROVIDED THAT NO SUCH FEATURE SHALL BE LOCATED CLOSER THAN SIX FEET FROM ANY LOT LINE. SUBDIVISION STREETS- CURB & GUTTER WA TERSHED: SOUTHFORK RI VANNA RIVER WATERSHED AGRICULTURAL/ FORESTAL DISTRICT. NONE TOPO & SURVEY. TOPOGRAPHY PROVIDED BY ROUDABUSH, GALE AND ASSOCIATES, ✓ANUARY 2021. THE BOUNDARY LINE INFORMATION IS PROVIDED BY TIMMONS GROUP. INFORMATION FIELD VERIFIED BY COLLINS ENGINEERING OCTOBER 2021. DATUM: NAD 83 EXISTING VEGETATION: BOTH PARCELS ARE PRIMARY WOODED, WITH EXCEPTION FOR THE CLEARED AREA ASSOCIATED WITH THE UTILITY EASEMENTS LIGHTING: NO SITE OR STREET LIGHTING IS PROPOSED WITH THIS PROJECT. DUSK TO DAWN LIGHTING WILL BE PROVIDED ON EACH BUILDING. ANY SITE LIGHTING SHALL CONFORM TO ALBEMARLE COUNTY ZONING ORDINANCE REQUIREMENTS. PARKING: 88 SINGLE FAMILY ATTACHED & MULTI -FAMILY UNITS = 176 OFF-STREET PARKING SPACES REQUIRED MINIMUM (1) DRIVEWAY SPACE + (1) GARAGE SPACE TOTAL PARKING PROVIDED: 176 OFF-STREET PARKING SPACES GUEST SPACES: 1 SPACE PER 4 UNITS = 22 SPACES REQUIRED PROVIDED GUEST PARKING SPACES (ON -STREET PARKING) = 25 SPACES ROADWAYS AND PAVED CIRCULATION AREA = 28,609 SF (ACCESS EASEMENT/TRAVELWAY) IMPERVIOUS AREAS (WITHIN LOD): PROPOSED ROADWAY & DRIVEWAYS= 63,272 SF PROPOSED SIDEWALK & CONCRETE = 12,723 SF PROPOSED BUILDINGS = 59,290 SF TOTAL = 135,285 SF PHASING: THIS PROPERTY SHALL BE DEVELOPED WITHIN 1 PHASE BUILDING SITES: PARCELS 1-15 AND THE RESIDUE PARCEL EACH CONTAIN A BUILDING SITE THAT COMPLIES WITH THE REQUIREMENTS OF SECTION 4.2.1 OF THE ALBEMARLE COUNTY ZONING ORDINANCE. BURIAL SITES: NO CEMETERIES WERE FOUND DURING FIELD INVESTIGATION OF THE SITE. STREAM BUFFERS: NO STREAM BUFFERS ARE LOCATED ON THESE PROPERTIES OR WITHIN THE LIMITS OF THIS PROJECT AREA. FLOODPLAIN: THIS PROPERTY IS NOT IN A FLOODPLAIN ZONE AS SHOWN ON FEMA MAP#51003CO229D, DATED FEBRUARY 4, 2005. THIS PROPERTY IS NOT LOCATED WITHIN A DAM INUNDATION ZONE. RETAINING WALLS: RETAINING WALLS ARE PROPOSED WITH THE DEVELOPMENT AS SHOWN ON THE PLAN, SEE SHEET4 FOR DETAILS. RETAINING WALLS GREATER THAN 3' IN HEIGHT REQUIRE A SEPARATE BUILDING PERMIT. WALLS EXCEEDING 4' IN HEIGHT REQUIRE A STAMPED ENGINEERING DESIGN. WALLS CROSSING LOT LINES REQUIRE AN EASEMENT LANDSCAPING: STREET TREES ARE PROPOSED ALONG THE NEIGHBORHOOD STREETS IN ACCORDANCE WITH ALBEMARLE COUNTY LANDSCAPING REQUIREMENTS WITHIN SECT70N 32.Z9 OF THE COUNTY CODE. A LANDSCAPING PLAN WILL BE PROVIDED WITH THE FINAL SITE PLAN FOR COUNTY REVIEW AND APPROVAL. ALL LANDSCAPING REQUIREMENTS SHALL BE SHOWN ON THIS FINAL LANDSCAPING PLAN. STREET TREES SHALL BE PROVIDED ALONG THE PUBLIC STREETS 50, O.C. IN ACCORDANCE WITH VDOT AND ALBS. CO. STANDARDS. TRASH: EACH UNIT SHALL HAVE AN INDIVIDUAL TRASH CONTAINER, AND ALL TRASH SHALL BE COLLECTED BY A DRIVING DUMPSTER SERVICE. ICINITY MAP E: 1' = 2000'TH OF VICTORIAN HEIGHTS o c" SCOTT R. LINS'Z C-) No. 35791 112�- 01/06/22 c� WPO 202100034 PLAN �p06VANapPp o-p� / / o��SSIONAL E��1 AMENDMENT #1 i / / TMP W EER, LEWIS A LIVING TRUST , ZONING: RURAL _ I DB.4998, PG.437 _ TMP 45-80 IGEWOO EL& ANORLP ZONING: RURAL DB.5163, PG.405 RIO DISTRICT ALBEMARLE COUNTY, VIRGINIA LOT OTz LO L 4 LOT7 SHEET LAYOUT SCALE: 1" = 50' TMP45-73 HINES, ZEI.PA MAE OR WILLE VEE HINES ZONING: RURAL DB.a 6, PG.6o7 LOT8 LOT9 I LOT= LO LOTss zz LOT LOT I13 z4 LO -11VE1®04®1' i r TMP45-7z RIVANNA WATER & /SEWER AURTHORITY ZONING: RURAL DB.768, PG.z77 r PC / / / / r TMP qS7z TMP 45.69Ba �. EWERRIVAN /I WATER & WOOD, HUNTER W SEWER :RURARTHORTY REVOCABLE TRUST C/O ZONII,I7G: RURAL HUNTER W WOOD, DB.T68, PG.z77 TRUSTEE / ZONING: RURAL / LOT 26 LOT z7 LOT 17 LOI �\ LOT19 LOT z0 L�T LOT LOT LOT zT z 3 24 5 i I / 1r i I I I I I I L UDIN i I BUIDING um n I z4UNIT61 _L I I RECREATION AREA: REQUIRED RECREATIONAL AREA: 88 UNITS x 200 SF = 17,600 SF PROPOSED 22,220 SF (0.51 AC) INCLUDING (1) TOT LOT (2,515 SF), (1) RECREATION FIELD (8,000 SF), AND PASSIVE RECREATIONAL AMENITIES TOT LOT AREA SHALL INCLUDE THE FOLLOWING, AT A MINIMUM: ONE (1) SWING (FOUR SEATS) ONE (1) SLIDE WITH TWO (2) CLIMBERS ONE (1) BUCKABOUT OR WHIRL TWO (2) BENCHES RECREATIONAL PLAYFIELD NOTE: A RECREATIONAL SUBSTITUTION WAIVER WILL BE SUBMITTED WITH THE FINAL SITE PLAN FOR THE PROPOSED RECREATIONAL AMENITIES WITHIN THE DEVELOPMENT. OFFS/TE EASEMENT.„ ALL PROPOSED GRADING SHALL BE CONSTRUCTED ON SITE, WITHIN EXISTING RIGHT-OF-WAY, OR WITHIN EXISTING EASEMENTS. OFFSITE UTILITY EASEMENTS AND SIGHT DISTANCE EASEMENTS ARE PROPOSED WITH THIS DEVELOPMENT L, L, LOT 6 1 _-- — — i i— — i-_.- _- _ - i B- - NG#z _-i--_-?— �— i- zII NITS' U�' II, lEl LVI LOT 33 LOT zB LOT LOT LOT 32 TI g 3O 3i TMP 45-68Dz COMMONWEALTH OF VIRGINIA VDOT RIGHT OF WAY SECTION ZONING: Cz COMMERCIAL DB.i754, PG-5-4 i"-BIIbfCD NG #3+ --_ .--____- I i I I i �4 UNITS I I i I i I 1 Sheet List Table Sheet Number Sheet Title i COVER z EXISTING CONDITIONS 3 EROSION & SEDIMENT CONTROL NARRATIVE 4 EROSION & SEDIMENT CONTROL DETAILS 5 EROSION & SEDIMENT CONTROL PLAN - PHASE 1 6 EROSION & SEDIMENT CONTROL PLAN - PHASE 11 7 EROSION & SEDIMENT CONTROL PLAN - PHASE III 8 STORMWATER MANAGEMENT PLAN 9 STORMWATER MANAGEMENT DETAILS 10 STORMWATER MANGEMENT DETAILS ii OVERALL GRADING PLAN 12 DRAINAGE MAP 13 OFFSITE DRAINAGE MAP 13 TOTAL NUMBER OF SHEETS „AMENDMENT i. LAYOUT, UTILITIES, & ROAD GRADING UPDATED z. SEDIMENT BASIN iTO REMAIN ESC PHASES 1-III WITH DIVERSIONS AND PERMANENT PIPING OUTFALL > 3. SEDIMENTTRAP 3 SIZE REDUCED WITH NEW DIVERSION TO SEDIMENT BASIN i 4. UNDERGROUND DETENTION SYSTEM RAISED 4' VERTICALLY. Z0 O U rrAHA w V/ o Hz 0 Ww M 'F-F 1 _ CM z co LU _ CV co z CD W M N Q W < z ui J J � L > U) M IIIIII— w L C) LLJ Q . �--I z0� Q (V _ W U (V LLJ p 0 W V Ul I W = W Ur ` ui J w z JQ Q 0 0 CV - UU Lu w a Lo JOB NO. 202196 SCALE III _ 501 SHEET NO. 1 \ I I � I \ TMP 45-74A/ / WEBER, LEWI A LIVING - --- � TRUST ZONING: RURAL TMP 4--73 D 4998, PG.437 I ZELDA MAE OR NIECE LEE HINES ZONI \ RURAL DB.1056, PG.607 — / SD OH �- — -� off WOODBURN ROAD / V — MTD"ROUTE 659— / ��540 off off — 4pjR�yy (Ag, 534, -,mac 154) / \ \ - - WM �i x—x—x—x—x—x—x—x—x—X N49°48'33.82"E35949' off I _ Mom_ i M AAN47°o6'04.79"E 93.41' M WM �R 15' PRESCRIPTIVE EASEMENT yam° EXISTING (PLEASE SEE NOTE i ON THIS $ \ — CULVERTTO TO O REMAIN - — — \ SHEET) I RIDZEWCZOD MOTEL 8, - MANOR LP \ / \ \ TMP 45-68C2 ZONING: R6 - — — / \ \ VICTORIA"EIGHTS LLC D L5 63, PG.405 , A S3G� \ ZONIN"i5 / DB.5655, PG-3Z WOODED AREA WITH A DB.5292, PG.237 Q S o / MIXTURE OF DECIDUOUS AND DB•1775, PG•432 \ 3 o M VERGREEN TREES \ DB,1439, PG.196 " 00 M /z v� T V \ / In \ EXIST( G CURB INLETTO BE / 1 TEMP U REMOVED AND EXISTING PIPE TO BE CONSTRUCTION r I v ABANDONED IN PLACE WITH THE USE �52° / EASEMENT / / DB 1439 PG 1g6 OF FL WABLE FILL - SEF ESC / / VARIABLE V — - j WATER AND D VARIABLE WIDTH WATERLINE - _ EASEMENT FOR RIVANNA BENCHMARK \ ✓ \ `'a _ - - _ TOP OF DROP INLET WATER AND SEWER ELEV=514.08 °� _ — - AUTHORITY �� DB 1446 PG 125 iLVv - V2 i,, it it — — H OF � SCOTT R. LLINS'Z V A \ \ \ U No. 35791 C�- 1100 01/06/22 \ \ 10NAL 'Fl U) J a 2 �/ > WATER & / L RTHORITY :RURAL TMP45-71 / \ o PG.277 R�A IMA WATER & I I /,\ 5-6gB1 Ln o SEWERAURTHORITY HUNTER W. WOODz / (ZONING: RURAL\ \ / / / I Z z m�Ja x oDB.768, PG.277 TRUSTZONIIJG: RURAL o / x / DB.Sjo2, PG. 8 - a 0- u 4* x-- x ----x- r—x—iI Q a x_x_xx OM W� z z fz — 5 STAT€ROUTE a — - 540� w > E 532° z7' 29.61" 2 32' L- L — — �� - W z > Iceo ~m _ LL w O N ° 43' 27.76"E 217.85' I- ¢ M S 3 2 0 27' 29.6i E/4 90' —� / — �— / a > N410 1j 04.76"E 88.86' / ] w� - / 5'WATERLINEEASEMENT / / N47° 06' 0479'E 5551' FORTMP 45-68D (SERIES) / DB. 430, PG. 406 / EXISTING GRAVEL DRIVEWAY TO BE TMP H i 3 / VITORIANHEIGTS LLCi REMOVED. / �o ti(b / / Z'ONING: Ri5/ WATERLINE EASEMENT TMP 68 FOR CITY OF / 6/ / DB•56� 357 �yo/ 45 _-LTH 4i ti � COMMf}NWEALTH OF CHARLOTTESVILLE / ��'� 5ti / DB. 2 PGsoo / i N �� 5 4S, VIRGINIA VDOT RIGHT OF w c� DB388PG66 ' / / / / / hti ryti/ do 1779, PG•39g o WAYS€CTION o ? \ o /� 5 / DB.i446, P�i.1z5 w ZONING: C3. 4o -� WOODED AREA WITH A 2.2jYACRES r COMMERCIAL / w DB.a.f54, PG.514 2ASSED AREA ALONG / / / / MIXTURE OF DECIDUOUS AND m ATERLINE EASEMENT / / / � / � / �X VERCGREEN TREES m � � T-1 WATERLINES kIN / / / / yy� / / / Ch cl' w CY) i 53o LIMITS OF EXISTING � � / / � / / yzi __ � / � � CV / - MANAGED STEEP SLOPES ON THE / / / / i5 Syo 08 -- EXISTING CONCRETE FLUME T6 BE / CM 0 SITE i � / � -5 -DEMOLISHED. EXISTING PIPE TO BE — � z -506 ABANDONED IN PLACE WITH THE USE / Z Q w J -OF FLOWABLE FILL / i 04 VARIABLE WIDTH DRAINAGE / i 504 i / / - 5 d EASEMENT FOR PUBLIC USE ' / � _ 5or _ —500 6 / j49° 52O / / / DB.1446, P. u5 49 4 / CN Q / / / TO BE EXTINGUISHED) I( �/ / 49 2 wo)o8 4 6 $6 / I XISTING HEADWALL TO BE / / / i ( / i REMOVED. EXISTING PIPE TO REMAIN. / / W Q TERLINE DOGHOUSE MANHOLE PROPOSED WITH THIS DEVELOPMENT. CANNA J DRAINAGE VARIABLE WIDTH _ JTHORITY _ �510�-, - � 5 EASEMENT FOR PUBLIC USE I - - - - - DB.1446, P.125 - � N w w M (TO BE EXTINGUISHED) \ - - - - �9 Soo_ C3 0 9---__-�- -------1 - 0 , - 9�, F A O z Q N V) = o z lip _ �- h6------------- ---- -- --- ,- - -i �� i �/ j % / '� - - � WAL-MA TSTOR4= \ / U)will U� -- -ti / 15"RCP - BENCHMARK \/ j i _ #180 O _ TMP 68 �x_x�x ZONIN :H�� W Z _ TOP OF DROP INLET 45 i ELEV=503.67 AMAT/0, SAI�IDRP_P; ��/ %--� DB.1881, G.112CHRISTP H ER ( r n _ — — _— — _ — \ G ASbN 8i HUNTER / / I J I II I (III II v Z — - I \ r r -x x ODNfi F�c ES W f I v I 1 I 1 I 1 \ I / / �I III'( = cii Lu l - -- r TMP -68Co - — \ 537 , P 6 I I 11, ~ x LIMITS OF EXISTING CURB ' 45 � 7 r \ � � \ 1 � � � I 1 1 \./ i I ~ -7 / / AND CONCRETE SIDEWALK TO CHARLOTTESVILLE \ \ I \ 1 W Z L1J VED FOR NEW ENTRANOCE AT BERK AR REALTY CORP _ 1 DRIVE / ZONING: HC DB-1 Q PG.1 6 I — x—x— �� x-x- x I ( �� / 1 ' �� CN TMP 45-68C1 I �� \ 1 I 1 1 �� NOTES: Iu-I MALLOY FORD �,� 1 1. D.B. 534, PG.154 (1973) SHOWS ADJACENT LANDOWNERS GRANTING A 40' RIGHT-OF-WAY ACROSS WOODBURN ROAD. THE LANDOWNER OF ZONING: HC I I / TMP 45-68C2 DID NOT SIGN THIS OMNIBUS DEED. THEREFORE THE PROPERTY LINE IS SHOWN TO THE CENTERLINE OF WOODBURN ROAD PER DB.4863, PG.461 \ \ I I \ / / / 1 I l l / / D.B. 478, PG. 526, A PRESCRIPTIVE EASEMENT i5' SOUTH OF CENTERLINE OF WOODBURN IS SHOWN HEREON. 1 2. THE BOUNDARY SURVEY SHOWN HEREON IS BASED ON FIELD RUN SURVEY BY TIMMONS GROUP COMPLETED ON SEPTEMBER 28, 2021. GRAPHIC SCAL� �20 / 1 ) ( IN FEET CURVE TABLE CURVE RADIUS LENGTH TANGENT DELTA CHORD BEARING CHORD C4 2760.66' 40.23' 20.1 V 0050106" S41 °4754"W 40.23' C5 5755.50' 141.11' 70.56' 124'17" S41'3049"W 141.10' C6 2760.66' 435.08' 217.99' 9"0148" S36'5158"W 434.63' BOUNDARY BASED UPON FOUND MONUMENTATION AND EVIDENCE RECOVERED FROM THE LAND RECORDS OF THE CLERK S OFFICE OF ALBEMARLE COUNTY, VA. a N 3. BASIS OF MERIDIAN IS NAD83 (NA2011), VIRGINIA STATE GRID, SOUTH ZONE. JOB No. 4. UNDERGROUND WATERLINES SHOWN ON THIS SHEET WERE FIELD LOCATED FROM MARKS BASED UPON MISS UTILITY (811) TICKET NO: 202196 B1267oi3i6. 5. THE PROPERTIES SHOWN HEREON ARE WITHIN AN AIRPORT IMPACT OVERLAY AREA. SCALE 6. THE PROPERTIES SHOWN HEREON ARE WITHIN A WATER SUPPLY PROTECTION AREA PER COUNTY GIS. 1" - 30 7. THE PROPERTIES SHOWN HEREON ARE NOT LOCATED WITHIN AN AGRICULTURAL -FOREST DISTRICT. SHEET No. 8. THE PROPERTIES SHOWN HEREON ARE NOT WITHIN AN ENTRANCE CORRIDOR OVERLAY AREA. \ \ \,L inch = ft. I 1 2 1992 EROSION & SEDIMENT CONTROL MEASURES: STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE IN ACCORDANCE WlH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. STRUCTURAL PRACTICES USED IN THIS SECTION CONSIST OF HE FOLLOWING: 3.01 SAFETY FENCE.• A PROTEC7VE BARRIER INSTALLED TO PREVENT ACCESS TO AN EROSION CONTROL MEASURE. TO PROHIBIT HE UNDESIRABLE USE OF AN EROSION CONTROL MEASURE BY 774E PUBLIC. APPLICABLE TO ANY CONTROL MEASURE OR SERIES OF MEASURES WHICH CAN BE CONSIDERED UNSAFE BY VIRTUE OF POTENTIAL ACCESS BY THE PUBLIC. 3.02 CONSTRUCTION ENTRANCE: A STABILIZED PAVED CONSTRUC7ON ENTRANCE WITH A WASH RACK LOCATED AT POINTS OF VEHICULAR INGRESS AND EGRESS ON A CONSTRUCTION SITE. TO REDUCE THE AMOUNT OF MUD TRANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF. CONSTRUCTION ENTRANCES SHALL BE INSTALLED AS SHOWN ON HE PLANS TO REDUCE THE AMOUNT SEDIMENT TRANSPORTED ONTO PUBLIC ROADWAYS. 3.05 SILT FENCE: A TEMPORARY SEDIMENT BARRIER CONSIS77NG OF A SYNTHETIC FILTER FABRIC STRETCHED ACROSS AND ATTACHED TO SUPPORTING POSTS AND ENTRENCHED, TO INTERCEPT AND DETAIN SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING CONSTRUC7ON OPERATIONS IN ORDER TO PREVENT SEDIMENT FROM LEAVING THE SITE, AND TO DECREASE THE VELOCITY OF SHEET FLOWS AND LOW -TO -MODERATE LEVEL CHANNEL FLOWS. HE SILT FENCE BARRIERS SHALL BE INSTALLED DOWN SLOPE OF AREAS WITH MINIMAL GRADES TO FILTER SEDIMENT LADEN RUNOFF FROM SHEET FLOW AS INDICATED. THEY SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND MAINTAINED IN ACCORDANCE WITH HE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK (VESCH). 3.07 STORM DRAIN INLET PROTECTION. A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDING AREA AROUND A STORM DRAIN DROP INLET OR CURB INLET TO PREVENT SEDIMENT FROM ENTERING STORM DRAINAGE SYSTEMS PRIOR TO PERMANENT STABILIZATION OF THE DISTURBED AREA. INLET PR07ECTON APPLIES WHERE STORM DRAIN INLETS ARE TO BE MADE OPERA77ONAL BEFORE PERMANENT STABILIZATION OF THE CORRESPONDING DISTURBED DRAINAGE AREA. 3.08 CULVERT INLET PROTECTION. A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDING AREA AROUND A STORM CULVERT. TO PREVENT SEDIMENT FROM ENTERING STORM CULVERTS PRIOR TO PERMANENT STABILIZATION OF THE DISTURBED AREA. INLET PR07ECT70N APPLIES WHERE STORM CULVERTS ARE EXIS77NG OR TO BE MADE OPERATIONAL BEFORE PERMANENT STABILIZATION OF THE CORRESPONDING DRAINAGE AREA. 3.09 TEMPORARY DIVERSION DIKE.• A TEMPORARY RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPING DISTURBED AREA. TO DIVERT STORM RUNOFF FROM UPSLOPE DRAINAGE AREAS AWAY FROM UNPR07ECTED DISTURBED AREAS AND SLOPES TO A STABILIZED OUTLET TO DIVERT SEDIMENT -LADEN RUNOFF FROM A DISTURBED AREA TO A SEDIMENT -TRAPPING FACILITY SUCH AS A SEDIMENT TRAP OR SEDIMENT BASIN. USE WHEREVER STORMWATER RUNOFF MUST BE TEMPORARILY DIVERTED TO PR07ECT DISTURBED AREAS AND SLOPES OR RETAIN SEDIMENT ON S17F DURING CONSTRUCTION. THESE STRUCTURES GENERALLY HAVE A LIFE EXPECTANCY OF 18 MONTHS OR LESS, WHICH CAN BE PROLONGED WlTH PROPER MAINTENANCE. 3.12 DIVERSION: A CHANNEL CONSTRUCTED ACROSS A SLOPE WITH A SUPPORTING EARTHEN RIDGE ON THE LOWER SIDE. TO REDUCE SLOPE LENGTH AND TO INTERCEPT AND DIVERT STORMWATER RUNOFF TO STABILIZED OUTLETS AT NON -EROSIVE VELOCITIES. APPLIES WHERE RUNOFF FROM AREAS OF HIGHER ELEVATION MAY DAMAGE PROPERTY, CAUSE EROSION, OR INTERFERE WITH THE ESTABLISHMENT OF VEGETATION ON LOWER AREAS, WHERE SURFACE AND/OR SHALLOW SUBSURFACE FLOW IS DAMAGING SLOPING UPLAND, AND WHERE THE SLOPE LENGTH NEEDS TO BE REDUCED TO MINIMIZE SOIL LOSS. 3.13 TEMPORARY SEDIMENT TRAP. - A TEMPORARY PONDING AREA FORMED BY CONSTRUCTING AN EARTHEN EMBANKMENT WITH A STONE OUTLET. TO DETAIN SEDIMENT -LADEN RUNOFF FROM SMALL DISTURBED AREAS LONG ENOUGH TO ALLOW THE MAJORITY OF THE SEDIMENT TO SETTLE OUT. USE BELOW DISTURBED AREAS WHERE THE TOTAL CONTRIBUTING DRAINAGE AREA IS LESS THAN 3 ACRES, WHERE THE SEDIMENT TRAP WILL BE USED NO LONGER THAN 18 MONTHS, AND IT MAY BE CONSTRUCTED EITHER INDEPENDENTLY OR IN CONJUNCTION WITH A TEMPORARY DIVERSION DIKE. 3.14 TEMPORARY SEDIMENT BASIN. A TEMPORARY BARRIER OR DAM WITH A CONTROLLED STORMWATER RELEASE STRUCTURE FORMED BY CONSTRUCTING AN EMBANKMENT OF COMPACTED SOIL ACROSS A DRAINAGEWAK TO DETAIL SEDIMENT -LADEN RUNOFF FROM DISTURBED AREAS IN "WET" AND `DRY" STORAGE LONG ENOUGH FOR THE MAJORITY OF THE SEDIMENT TO SETTLE OUT. APPLIES BELOW DISTURBED AREAS WHERE THE TOTAL CONTRIBUTING DRAINAGE AREA IS EQUAL TO OR GREATER THAN THREE ACRES. THERE MUST BE SUFFICIENT SPACE AND APPROPRIATE TOPOGRAPHY FOR THE CONSTRUCTION OF A TEMPORARY IMPOUNDMENT. 3.18 OUTLET PROTECTION: STRUCTURALLY LINED APRONS OR OTHER ACCEPTABLE ENERGY DISSIPATING DEVICES PLACED AT THE OUTLETS OF PIPES OR PAVED CHANNEL SECTIONS TO PREVENT SCOUR AT STORMWATER OUTLETS, TO PR07ECT THE OUTLET STRUCTURE, AND TO MINIMIZE THE P07EN77AL FOR DOWNSTREAM EROSION BY REDUCING HE VELOCITY AND ENERGY OF CONCENTRATED STORMWATER FLOWS APPLICABLE TO THE OUTLETS OF ALL PIPES AND ENGINEERED CHANNEL SECTIONS. 3.19 RIPRAP: A PERMANENT, EROSION -RESISTANT GROUND COVER OF LARGE, LOOSE, ANGULAR STONE WITH FILTER FABRIC OR GRANULAR UNDERLINING. TO PR07ECT THE SOIL FROM THE EROSIVE FORCES OF CONCENTRATED RUNOFF, SLOW HE VELOCITY OF CONCENTRATED RUNOFF WHILE ENHANCING THE P07EN77AL FOR INFILTRATION, AND TO STABILIZE SLOPES WITH SEEPAGE PROBLEMS, AND/OR NON -COHESIVE SOILS. USE WHEREVER SOIL AND WATER INTERFACE AND THE SOIL CONDITIONS, WATER TURBULENCE AND VELOCITY, EXPECTED VEGETATIVE COVER, ETC., ARE SUCH THAT THE SOIL MAY ERODE UNDER THE DESIGN FLOW CONDITIONS. 3.20 ROCK CHECK DAMS: SMALL TEMPORARY STONE DAMS CONSTRUCTED ACROSS A SWALE OR DRAINAGE DITCH. TO REDUCE HE VELOCITY OF CONCENTRATED STORMWATER FLOWS, HEREBY REDUCING EROSION OF HE SWALE OR DITCH. HIS PRACTICE ALSO TRAPS SEDIMENT GENERATED FROM ADJACENT AREAS OR THE DITCH ITSELF, MAINLY BY PONDING OF HE STORMWATER RUNOFF. HIS PRACTICE, UTILIZING A COMBINATION OF STONE SIZES, IS LIMITED TO USE IN SMALL OPEN CHANNELS WHICH DRAIN 10 ACRES OR LESS 3.31 TEMPORARY SEEDING: THE ESTABLISHMENT OF A TEMPORARY VEGETA7VE COVER ON DISTURBED AREAS BY SEEDING WITH APPROPRIATE RAPIDLY GROWING ANNUAL PLANTS. TO REDUCE EROSION AND SEDIMENTATION BY STABILIZING DISTURBED AREAS THAT WILL NOT BE BROUGHT TO FINAL GRADE FOR A PERIOD OF MORE THAN 30 DAYS. TO REDUCE DAMAGE FROM SEDIMENT AND RUNOFF TO DOWNSTREAM OR OFF -SITE AREAS, AND TO PROVIDE PR07EC77ON TO BARE SOILS EXPOSED DURING CONSTRUCTION UNTIL PERMANENT VEGETA7ON OR 07HER EROSION CONTROL MEASURES CAN BE ESTABLISHED. 3.32 PERMANENT STABILIZATION. THE ESTABLISHMENT OF PERENNIAL VEGETATIVE COVER ON DISTURBED AREAS BY PLANING SEED. TO REDUCE EROSION AND DECREASE SEDIMENT YIELD FROM DISTURBED AREAS. TO PERMANENTLY STABILIZE DISTURBED AREAS IN A MANNER THAT /S ECONOMICAL, ADAPTABLE TO SITE CONDITIONS, AND ALLOWS SELECTION OF THE MOST APPROPRIATE PLANT MATERIALS. TO IMPROVE WILDLIFE HABITAT. TO ENHANCE NATURAL BEAUTY. UPON COMPLETION OF CONSTRUCTION ACTIVITIES, ALL AREAS WILL RECEIVE A PERMANENT VEGETATIVE COVER. 3.35 MULCHING, APPLICATION OF PLANT RESIDUES OR OTHER SUITABLE MATERIALS TO THE SOIL SURFACE. TO PREVENT EROSION BY PR07EC77NG THE SOIL SURFACE FROM RAINDROP IMPACT AND REDUCING HE VELOCITY OF OVERLAND FLOW. TO FOSTER THE GROWTH OF VEGETATION BY INCREASING AVAILABLE MOISTURE AND PROVIDING INSULATION AGAINST EXTREME HEAT AND COLD. AREAS WHICH HAVE BEEN PERMANENTLY SEEDED SHOULD BE MULCHED IMMEDIATELY FOLLOWING SEEDING. AREAS WHICH CANNOT BE SEEDED BECAUSE OF HE SEASON SHOULD BE MULCHED USING ORGANIC MULCH. MULCH MAY BE USED TOGETHER K17H PLANTINGS OF TREES, SHRUBS, OR CERTAIN GROUND COVERS WHICH DO NOT PROVIDE ADEQUATE SOIL STABILIZATION BY THEMSELVES, CAN BE USED IN CONJUNCTION K17H TEMPORARY SEEDING. 337 TREES. SHRUBS VINES & GROUND COVERS: STABILIZING DISTURBED AREAS BY ESTABLISHING VEGETATIVE COVER WITH TREES, SHRUBS, VINES, OR GROUND COVERS. TO AID IN STABILIZING SOIL IN AREAS WHERE VEGETATION OVER THAN TURF IS PREFERRED, TO PROVIDE FOOD AND SHELTER FOR WILDLIFE WHERE WILDLIFE HABITAT IS DESIRABLE. APPLIES IN AREAS WHERE TURF ESTABLISHMENT IS DIFFICULT, ON STEEP OR ROCKY SLOPES WHERE MOWING IS NOT FEASIBLE, WHERE ORNAMENTALS ARE DESIRABLE FOR LANDSCAPING PURPOSES, AND WHERE WOODY PLANTS ARE DESIRABLE FOR SOIL CONSERVATION, OR TO ESTABLISH WILDLIFE HABITAT. 3.36 BLANKET MATTING: INSTALLATION OF A PROTECTIVE COVERING OR A SOIL STABILIZATION MAT ON A PREPARED PLANING AREA OF A STEEP SLOPE OR CHANNEL TO AID IN THE CONTROLLING EROSION ON CRITICAL AREAS. 3.38 TREE PRESERVATION AND PROTECTION. PR07EC77ON OF DESIRABLE TREES FROM MECHANICAL OR OTHER INJURY DURING LAND DISTURBING AND CONSTRUCTION ACTIVITY. TO ENSURE THE SURVIVAL OF DESIRABLE TREES WHERE THEY WILL BE EFFECTIVE FOR EROSION AND SEDIMENT CONTROL, WATERSHED PROTECTION, LANDSCAPE BEAUTIFICATION, DUST AND POLLUTION CONTROL, NOISE REDUCTION, SHADE AND 07HER ENVIRONMENTAL BENEFITS WHILE THE LAND IS BEING CONVERTED FROM FOREST TO URBAN -TYPE USES. APPLIES IN TREE -INHABITED AREAS SUBJECT TO LAND DISTURBING ACTIVITIES 3.39 DUST CONTROL: REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBING, DEMOLITION AND CONSTRUCTION ACTIVITIES. TO PREVENT SURFACE AND AIR MOVEMENT OF DUST FROM EXPOSED SOIL SURFACES AND REDUCE HE PRESENCE OF AIRBORNE SUBSTANCES WHICH MAY PRESENT HEALTH HAZARDS, TRAFFIC SAFETY PROBLEMS OR HARM ANIMAL OR PLANT LIFE. DUST CONTROL MEASURES SHALL BE EMPLOYED TO PREVENT SURFACE AND AIR MOVEMENT OF DUST DURING CONSTRUCTION. MEASURES EMPLOYED SHALL BE IN ACCORDANCE WITH HE VESCH. 3.32 TABLE 3.32-D SITE SPECIFIC SEEDING MIXTURES FOR PIEDMONT AREA Total Lbs. Per Acre Minimum Care Lawn - Commercial or Residential 175-200 lbs. - Kentucky 31 or Turf -Type Tall Fescue 95-100% - Improved Perennial Ryegrass 0.5% - Kentucky Bluegrass 0.5% High -Maintenance Lawn 200-250lbs. - Kentucky 31 or Turf -Type Tall Fescue 100% General Sl%& (3:1 or less) . Kentucky 31 Fescue 128 lbs. . Red Top Grass 2 lbs. - Seasonal Nurse Crop* .20 lbs. 150 lbs. Low -Maintenance Slope (Steeoer than 3:1) - Kentucky 3 1 F Fescue 108 lbs. - Red Top Grass 2 lbs. - Seasonal Nurse Crop* 20 III - Crownvetch ie 20 lbs. 150 lbs. • Use seasonal nurse crop in accordance with seeding dates as stated below: February 16th through April ...................... Annual Rye May 1st through August 15th ..................... Foxtail Millet August 16th through October ..................... Annual Rye November through February 15th . .................. Winter Rye " Substitute Sericea lespedeza for Crownvetch east of Fartnville, Va. (May through September use hulled Sericea, all other periods, use unhulled Sericea). If Flatpea is used in lieu of Crownvetch, increase rate to 30lbs./acre. All legume seed must be properly inoculated. Weeping Lovegrass may be added to any slope or low -maintenance mix during warmer seeding periods; add 10-20 lbs./acre in mixes. TABLE 331-A LMUNG REQUIREMENTS FOR TEMPORARY SITES Recommended Application pH Test of Aoiculnual Limestone below 4.2 3 tons per acre 42 to 5.2 2 tole per acre 52 to 6 1 ton per ane TABLE "I-B ACCEPTABLE TEMPORARY SEEDING PLANE MATERIAL& -QUICK REFERENCE FOR ALL REGIONS" Rate ]%.n Dve, s.d� tlaL.,B ) Sept. I - Feb. 15 50/50 M4 M Annual RM. a,Iaum mnw-nnmmi & so-100 CaW(w ta)Rye (s.�.._. .) Feb.16 - Apr. 30 A .0 Rye . 60 - 100 n„m,m multi-rf„nm) May 1. Aug 31 German MOla M GENERAL SLOPE (3:1 OR LESS) TOTAL LBS PER ACRE KENTUCKY 31 FESCUE 128 LBS RED TOP GRASS 2 LBS SEASONAL NURSE CROP 20 LBS 150 LBS SEASONAL NURSE CROP 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 PS NO SCALE (STD. & SPEC. 3.32 OF VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK, 3RD ED.) EROSION CONTROL NOTES ES-1: UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTCES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS I/R 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS. ES-2: THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING AC77WTY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. ES-3:ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING. ES-4: A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE S1TE AT ALL TIMES. ES-5: PRIOR TO COMMENCING LAND DISTURBING ACT7077ES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING BUT NOT LIMITED TO, OFF -SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY. ES-6: THE CONTRACTOR IS RESPONSIBLE FOR INSTALLA7ON OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. ES-7.•ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL 77MES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UN77L FINAL STABILIZATION IS ACHIEVED. ES-8: DURING DEWA7ERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED WATER FILTERING DEVICE. ES-9: THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFEC77VENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. General construction notes for Erosion and Sediment Control plans 1. The plan approving authority must be notified one week prior to the pre -construction conference, one week prior to the commencement of land disturbing activity, and one week prior to the final inspection. 2. All erosion and sediment control measures will be constructed and maintained according to minimum standards and specifications of the Virginia Erosion and Sediment Control Handbook and Virginia Regulations VR 625-02-00 Erosion and Sediment Control Regulations. 3. All erosion and sediment control measures are to be placed prior to or as the first step in clearing. 4. A copy of the approved erosion and sediment control plan shall be maintained on the site at all times. 5. Prior to commencing land disturbing activities in areas other than indicated on these plans (including, but not limited to, off -site borrow or waste areas), the contractor shall submit a supplementary erosion control plan to the owner for review and approval by the plan approving authority. 6. The contractor is responsible for installation of any additional erosion control measures necessary to prevent erosion and sedimentation as determined by the plan approving authority. 7. All disturbed areas are to drain to approved sediment control measures at all times during land disturbing activities and during site development until final stabilization is achieved. 8. During dewatering operations, water will be pumped into an approved filtering device. 9. The contractor shall inspect all erosion control measures periodically and after each runoff - producing rainfall event. Any necessary repairs or cleanup to maintain the effectiveness of the erosion control devices shall be made immediately. 10. All fill material to be taken from an approved, designated borrow area. 11. All waste materials shall be taken to an approved waste area. Earth fill shall be inert materials only, free of roots, stumps, wood, rubbish, and other debris. 12. Borrow or waste areas are to be reclaimed within 7 days of completion per Zoning Ordinance section 5.1.28. 13. All inert materials shall be transported in compliance with section 13-301 of the Code of Albemarle. 14. Borrow, fill or waste activity involving industrial -type power equipment shall be limited to the hours of 7:00am to 9:00pm. 15. Borrow, fill or waste activity shall be conducted in a safe manner than maintains lateral support, or order to minimize any hazard to persons, physical damage to adjacent land and improvements, and damage to any public street because o slides, sinking, or collapse. 16. The developer shall reserve the right to install, maintain, remove or convert to permanent stormwater management facilities where applicable all erosion control measures required by this plan regardless of the sale of any lot, unit, building or other portion of the property. 17. Temporary stabilization shall be temporary seeding and mulching. Seeding is to be at 75 lbs/acre, and in the months of September to February to consist a 50150 mix of Annual Ryegrass and Cereal Winter Rye, or in March and April to consist of Annual Rye, cr May through August to consist of German Millet. Straw mulch is to be applied at 80lbs/100sf. Alternatives are subject to approved by the County erosion control inspector. 18. Permanent stabilization shall be lime and fertilizer, permanent seeding, and mulch. Agricultural grade limestone shall be applied at 90lbs/1000sf, incorporated into the top 4-6 inches of soil. Fertilizer shall be applied at 1000lbs/acre and consist of a 10-20-10 nutrient mix. Permanent seeding shall be applied at 180lbs/acre and consist of 95% Kentucky 31 or Tall Fescue and 0-5%D Perennial Ryegrass or Kentucky Bluegrass. Straw mulch is to be applied at 80lbs/100sf. Alternatives are subject to approved by the County erosion control inspector. 19. Maintenance: All measures are to be inspected weekly and after each rainfall. Any damage or clogging to structural measures is to he repair immediately. Silt traps are to be cleaned when 50% of the wet storage volume is filled with sediment. All seeded areas are to be reseeded when necessary to achieve a good stand of grass. Silt fence and diversion dykes which are collecting sediment to half their height must be cleaned and repaired immediately. 20. All temporary erosion and sediment control measures are to be removed within 30 days of final site stabilization, when measures are no longer needed, subject to approval by the County erosion control inspector. 21. This plan shall be void if the owner does not obtain a permit within 1 year of the date of approval. (Water Protection Ordinance section 17-204G.) 22. Permanent vegetation shall be installed on all denuded areas within nine (9) months after the date the land disturbing activity commenced. (Water Protection Ordinance section 17- 207B) ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR EXTENDED PERIODS OF TIME SHALL BE SEEDED WIN FAST GERMINATING TEMPORARY VEGETATION IMMEDIATELY FOLLOWING GRADING. SELECTION OF THE SEED MIXTURE WILL DEPEND ON THE TIME OF YEAR AND WILL BE APPLIED TO DISTURBED AIRES THAT WILL NOT BE BROUGHT TO FINAL GRADE WITHIN 30 DAYS. PLANTS SHOULD BE SELECTED APPROPRIATE TO THE SEASON AND S17E CONDITIONS FROM TABLES 3.31B AND 3.31C. N07E THAT TABLE 3.31B PRESENTS PLANTS WHICH CAN BE USED WITHOUT EXTENSIVE EVALUATION OF SITE CONDITIONS, • TABLE 331C PRESENTS MORE IN-DEPTH INFORMATION ON THE PLANT MATERIALS. TO CONTROL EROSION ON BARE SOIL SURFACES, PLANTS MUST BE ABLE TO GERMINATE AND GROW. SEEDBED PREPARATION IS ESSENTIAL. AN EVALUATION SHOULD BE CONDUCTED TO DETERMINE IF LIME IS NECESSARY FOR TEMPORARY SEEDING. TABLE 331A MAY BE USED TO DETERMINE THE ACTUAL NEED ALONG WITH SUGGESTED APPLICATION RA TES: FERTILIZER SHALL BE APPLIED AS 600 LBS/ACRE OF 10-20-10 (14 LBS/1,000 SQ. FT.) OR EQUIVALENT NUTRIENTS. LIME AND FERTILIZER SHALL BE INCORPORATED INTO THE TOP 2 TO 4 INCHES OF THE SOIL IF POSSIBLE. IF THE AREA HAS BEEN RECENTLY LOOSENED OR DISTURBED, NO FURTHER ROUGHENING IS REQUIRED. WHEN THE AREA IS COMPACTED, CRUSTED, OR HARDENED, THE SOIL SHALL BE LOOSENED BY DISCING, RAKING, HARROWING, OR OTHER ACCEPTABLE MEANS. TRACKING WITH BULLDOZER CLEATS IS MOST EFFECTIVE ON SANDY SOILS. THIS PRACTICE OFTEN CAUSES UNDUE COMPACTION OF THE SOIL SURFACE, ESPECIALLY IN CLAYEY SOILS, AND DOES NOT AID PLANT GROWTH AS EFFECTIVELY AS OTHER METHODS OF SURFACE ROUGHENING. SEED SHALL BE EVENLY APPLIED WITH A BROADCAST SEEDER, DRILL, CULTIPACKER SEEDER OR HYDROSEEDER. SMALL GRAINS SHALL BE PLANTED NO MORE THAN 11 INCHES DEEP. SMALL SEEDS, SUCH AS KENTUCKY BLUEGRASS, SHOULD BE PLANTED NO MORE THAN 4 INCH DEEP. 07HER GRASSES AND LEGUMES SHOULD BE PLANTED FROM 4 INCH TO J DEEP. SEEDINGS MADE IN FALL FOR WINTER COVER AND DURING HOT AND DRY SUMMER MONTHS SHALL BE MULCHED ACCORDING TO MULCHING, STD. & SPEC. 335, EXCEPT THAT HYDROMULCHES (FIBER MULCH) WILL NOT BE CONSIDERED ADEQUATE. S7RAW MULCH SHOULD BE USED DURING THESE PERIODS. AREAS WHICH FAIL TO ESTABLISH VEGETATIVE COVER ADEQUATE TO PREVENT RILL EROSION WILL BE RE -SEEDED AS SOON AS SUCH AREAS ARE IDENTIFIED. DESCRIPTION OTRFT EROSION & SEDIMENT EROSION CONTROL NOTES & NARRATIVE CONTROL MEASURES: PURP THE POURPOSE OF THIS LAND DISTURBING ACTIVITY IS TO GRADE HE VICTORIAN HEIGHTS SITE FOR A EROSION AND SEDIMENT CONTROL MEASURES: RESIDENTIAL DEVELOPMENT. HE TOTAL AREA TO BE DISTURBED WITH THIS PLAN IS 5.13 ACRES. IT IS ANTICIPATED TO USE CONSTRUCTION ENTRANCES, DIVERSION DIKES, SEDIMENT BASINS & EXISTING SITE CONDITIONS TRAPS, AND SILT FENCES WILL BE INSTALLED TO CONTROL SURFACE DRAINAGE TEMPORARY MOST OF HIS SITE IS WOODED AND SLOPES TO THE SOUTHEAST AND NORTHEAST THE SITE IS SEEDING WILL BE USED IMMEDIATELY FOLLOWING ALL LAND DISTURBANCE ACTIVITIES. LOCATED TO THE NORTHWEST OF BERKMAR DRIVE AND SOUTHEAST OF WOODBURN ROAD. THE TEMPORARY STOCKPILE AREAS WILL BE MAINTAINED FROM TOPSOIL THAT WILL BE STRIPPED MAJORITY OF THE SITE DRAINS TO VARIOUS EXISTING CULVERTS AND INLETS, AN EXISTING WATERLNAIN TO REMAIN RUNS DIRECTLY THROUGH THE MIDDLE OF THE SITE AND ITS WATERLINE FROM AREAS TO BE GRADED AND STORED FOR LATER SPREADING. STOCKPILE LOCATIONS SHALL EASEMENT IS CLEARED. BE ON SITE AND SHALL BE STABILIZED WITH A TEMPORARY VEGETATIVE COVER. PERMANENT ADJACENT AREAS: SEEDING WILL BE PERFORMED FOR ALL AREAS WHICH WILL NO LONGER BE EXCAVATED AND THIS SITE IS BORDERED TO THE SOUTHEAST BY BERKMAR DRIVE AND TO THE NORTHWEST BY WHERE CONSTRUCTION ACTIO77ES HAVE CEASED. PERMANENT SEEDING SHALL ALSO BE WOODBURN ROAD. VACANT LAND IS ALONG THE NORTHEAST BORDER OF THE SITE AND A PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR A YEAR OR MORE. RESIDENTIAL DWELLING EXISTS TO THE SOUTHWEST OF THE SITE. SELECT70N OF SEED MIXTURE WILL DEPEND ON THE TIME OF YEAR APPLIED. OFFSITE LAND DISTURBANCE: TEMPORARY SEEDING WILL BE PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE LEFT IMPROVEMENTS TO BE MADE WITHIN THE VDOT RIGHT-OF-WAY ALONG BERKMAR DRIVE AND DORMANT FOR MORE THAN SEVEN DAYS. THESE AREAS SHALL BE SEEDED WlH FAST WOODBURN ROAD. GERMINATING VEGETATION IMMEDIATELY FOLLOWING GRADING OF THOSE AREAS SELECT70N OF CRITICAL AREAS: SEED MIXTURE WILL DEPEND ON THE TIME OF YEAR APPLIED. TREE PROTECT/ON FENCING AND SILT FENCE SHALL BE MAINTAINED ALONG THE PROPERTY LINES AS SHOWN ON THE PLAN TO THE EAST, NORTH, AND SOUTH OF THE SITE TO PROTECT THE ADJACENT CONSTRUCTION ENTRANCE. PROPERTIES. CONTRACTOR SHALL ENSURE THAT ALL SEDIMENT MAINTENANCE CONTROLS ARE ALONG A STABILIZED PAVED CONSTRUCTION ENTRANCE WITH A WASH RACK LOCATED AT POINTS OF WOODBURN ROAD AND BERKMAR DRIVE TO ENSURE THAT NO SEDIMENT LEAVES THE SITE AND VEHICULAR INGRESS AND EGRESS ON A CONSTRUCTION SITE TO REDUCE THE AMOUNT OF MUD DRAINS ONTO THE ROADS. TRANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF. SOILS: CONSTRUCTION ENTRANCES SHALL BE INSTALLED AS SHOWN ON THE PLANS TO REDUCE HE SOILS MAP IS INCORPORATED INTO EROSION CONTROL PLAN PHASE l WITH SOILS DATA INCLUDED AMOUNT SEDIMENT TRANSPORTED ONTO PUBLIC ROADWAYS. WITH THIS NARRATIVE. SILT FENCE., SEQUENCE OF CONSTRUCTION: A TEMPORARY SEDIMENT BARRIER CONSISTING OF A SYNTHETIC FILTER FABRIC STRETCHED PHASE I: ACROSS AND ATTACHED TO SUPPORTING POSTS AND ENTRENCHED. TO INTERCEPT AND DETAIN 1. NOTIFY ALBEMARLE COUNTY TO SCHEDULE A PRE -CONSTRUCTION MEETING AS REQUIRED. SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING CONSTRUCTION OPERATIONS IN 2. PRIOR TO DISTURBANCES, THE LIMITS OF DISTURBANCE SHALL BE FLAGGED AND THE TREE PROTECTION FENCING SHALL BE INSTALLED. ORDER TO PREVENT SEDIMENT FROM LEAVING HE SITE TO DECREASE HE VELOCITY OF SHEET 3. NO EROSION CONTROL MEASURES MAY BE REMOVED DURING THE CONSTRUCTION PROCESS FLOWS AND LOW -TO -MODERATE LEVEL CHANNEL FLOWS. THE SILT FENCE BARRIERS SHALL BE WITHOUT THE APPROVAL FROM THE INSPECTOR ON THE PROJECT. INSTALLED DOWN SLOPE OF AREAS WlH MINIMAL GRADES TO FILTER SEDIMENT LADEN RUNOFF 4, THE PROPOSED CONSTRUCTION ENTRANCE WITH WASH AREAS SHALL BE INSTALLED AS SHOWN ON FROM SHEET FLOW AS INDICATED. THEY SHALL BE INSPECTED IMMEDIATELY AFTER EACH THE PLANS. THE CONSTRUCTION ENTRANCE TO BE INSTALLED WHERE CONSTRUCTION VEHICLE RAINFALL AND MAINTAINED IN ACCORDANCE WlH HE VIRGINIA EROSION & SEDIMENT CONTROL ROUTES INTERSECT PAVED PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE HANDBOOK (VESCH). TRANSPORT OF SEDIMENT BY (VEHICULAR) TRACKING ONTO THE PAVED SURFACE. WHERE PERMANENT STABILIZATION: SEDIMENT IS TRANSPORTED ONTO A PUBLIC ROAD SURFACE, THE ROAD SHALL BE CLEANED THE ESTABLISHMENT OF PERENNIAL VEGETATIVE COVER ON DISTURBED AREAS BY PLANTING THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SEED. TO REDUCE EROSION AND DECREASE SEDIMENT YIELD FROM DISTURBED AREAS. TO SHOVELING OR SWEEPING AND TRANSPORTING TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN HIS MANNER. PERMANENTLY STABILIZE DISTURBED AREAS IN A MANNER THAT IS ECONOMICAL, ADAPTABLE TO 5. INSTALL THE INITIAL CONSTRUCTION MEASURES AS SHOWN ON THE PHASE I EROSION CONTROL SITE CONDITIONS, AND ALLOWS SELECTION OF THE MOST APPROPRIATE PLANT MATERIALS. TO SHEET. THIS INCLUDES A SEDIMENT BASIN, SEDIMENT ]RAPS, WIRE SILT FENCE, AND IMPROVE WILDLIFE HABITAT. TO ENHANCE NATURAL BEAUTY. UPON COMPLETION OF DIVERSION DIKES. MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST TRAP CONSTRUCTION ACT1077ES, ALL AREAS WILL RECEIVE A PERMANENT VEGETATIVE COVER. STEP WITH ANY LAND DISTURBANCE ACT7VlTY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE TEMPORARY SEEDING., LAND DISTURBANCE TAKES PLACE. THE ESTABLISHMENT OF A TEMPORARY VEGETATIVE COVER ON DISTURBED AREAS BY SEEDING 6. ONCE ALL THE PHASE I EROSION CONTROL ITEMS HAVE BEEN INSTALLED AS SHOWN ON THE WlH APPROPRIATE RAPIDLY GROWING ANNUAL PLANTS. TO REDUCE EROSION AND EROSION CONTROL PHASE I PLAN AND THE INSPECTOR HAS APPROVED THE EROSION CONTROL SEDIMENTATION BY STABILIZING DISTURBED AREAS THAT WILL NOT BE BROUGHT TO FINAL GRADE MEASURES, THE CONTRACTOR CAN BEGIN THE MINIMUM GRADING OPERATIONS. STABILIZATION FOR A PERIOD OF MORE THAN 30 DAYS. TO REDUCE DAMAGE FROM SEDIMENT AND RUNOFF TO MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES, AND DIVERSIONS DOWNSTREAM OR OFF-S17E AREAS, AND TO PROVIDE PROTECTION TO BARE SOILS EXPOSED IMMEDIATELY AFTER INSTALLATION. DURING CONSTRUCTION UNTIL PERMANENT VEGETATION OR OTHER EROSION CONTROL MEASURES 7. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE TEMPORARY SOIL CAN BE ESTABLISHED. STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT DUST CONTROL: FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS. REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBING, DEMOLITION AND PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR CONSTRUCTION ACTIVITIES. MORE THAN ONE YEAR. TO PREVENT SURFACE AND AIR MOVEMENT OF DUST FROM EXPOSED SOIL SURFACES AND REDUCE THE PRESENCE OF AIRBORNE SUBSTANCES WHICH MAY PRESENT HEALTH HAZARDS, TRAFFIC SAFETY PROBLEMS OR HARM ANIMAL OR PLANT LIFE. PHASE //. DUST CONTROL MEASURES SHALL BE EMPLOYED TO PREVENT SURFACE AND AIR MOVEMENT OF 8. PHASE ll CONSTRUCTION SHALL INCLUDE BUILDING THE RETAINING WALLS ALONG BERKMAR DRIVE, DUST DURING CONSTRUCTION. MEASURES EMPLOYED SHALL BE IN ACCORDANCE KITH HE VESCH. INSTALLING THE ROAD CONNECTION BETWEEN BERKMAR DRIVE AND WOODBURN ROAD AND TEMPORARY DIVERSION DIKE. • INSTALLING THE DRAINAGE STRUCTURES. DURING THE CONSTRUCTION OF THE RETAINING WALLS, THE SEDIMENT TRAP #1 SHALL BE MODIFIED AS THE WALLS ARE CONSTRUCTED. THE GRADING A RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPING DISTURBED FROM THE RETAINING WALLS WILL SLOPE DOWN TO THE TRAP, AND THE TRAP WILL CONTINUE TO AREA WHICH DIVERTS OFF -SITE RUNOFF AWAY FROM UNPR07EC1ED SLOPES AND TO A COLLECT THE RUN-OFF THAT IS NOT DIVERTED TO THE SEDIMENT BASIN. STABILIZED OUTLET, OR TO DIVERT SEDIMENT -LADEN RUNOFF TO A SEDIMENT TRAPPING 9, AFTER THE RETAINING WALLS ARE BUILT, THE CONTRACTOR SHALL INSTALL/COMPLETE THE STRUCTURE. MAXIMUM EFFECTIVE LIVE IS 18 MONTHS. SEDIMENT TRAP#1 MODIFICATIONS UPSLOPE OF THE RETAINING WALLS TO THE FINAL FORM SHOWN ROCK CHECK DAMS: IN PHASE 2 OF THE E&S PLANS TO CAPTURE RUNOFF FROM THE NORTHWEST END OF THE SITE. SMALL, TEMPORARY STONE DAMS CONSTRUCTED ACROSS A DRAINAGE DITCH TO REDUCE THE CONTRACTOR TO ALSO MODIFY ANY OF THE DIVERSION DIKES TO SEDIMENT BASIN AND TRAP TO VELOCITY OF CONCENTRATED FLOWS, REDUCING EROSION OF THE SWALE OR DITCH. LIMITED TO ENSURE POSITIVE DRAINAGE. ONCE INSPECTOR HAS APPROVED SEDIMENT TRAP AND DIVERSION USE IN SMALL OPEN CHANNELS WHICH DRAIN 10 ACRES OR LESS, • SHOULD NOT BE USED IN DIKES, CONTRACTOR CAN CONTINUE GRADING AND ROAD AND UTILITY CONSTRUCTIONS UPSLOPE LIVE STREAMS. OF THE SEDIMENT TRAP. STORM DRAIN INLET PROTECTION. 1O.PERMANENT OR TEMPORARY SOIL STABILIZAT70N SHALL BE APPLIED TO DENUDED AREAS WITHIN THE INSTALLATION OF VARIOUS KINDS OF SEDIMENT TRAPPING MEASURES AROUND DROP INLETS SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT OR CURB INLET STRUCTURES PRIOR TO PERMANENT STABILIZATION OF THE DISTURBED AREA; FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS. LIM17ED TO DRAINAGE AREAS NOT EXCEEDING ONE ACRE, AND NOT INTENDED TO CONTROL PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR LARGE, CONCENTRATED STORMWATER FLOWS MORE THAN ONE YEAR. TEMPORARY SEDIMENT TRAP: A SMALL PONDING AREA, FORMED BY CONSTRUCTING AN EARTHEN EMBANKMENT WlH A STONE PHASE Ill: OUTLET ACROSS A DRAINAGE SWALE, TO DETAIN SEDIMENT -LADEN RUNOFF FROM SMALL 11.WIH THE INSTALLATION OF THE UPLAND STORM SEWER SYSTEM AND CURB/GUTTER ALONG THE DISTURBED AREAS FOR ENOUGH TIME TO ALLOW MOST TO THE SUSPENDED SOLIDS TO SETTLE ALLEY, SEDIMENT TRAP #1 CAN BE REMOVED. INLET PROTECT70N SHALL BE INSTALLED AT THE OUT MAXIMUM EFFECTIVE LIFE IS 18 MONTHS. DROP INLETS AND YARD INLETS FOR THE STORM SEWER SYSTEM. THIS DRAINAGE SYSTEM WILL TEMPORARY SEDIMENT BASIN: OUTFALL THE RUN-OFF TO THE SEDIMENT BASIN #1, WHILE THE SITE IS BEING STABILIZED. A TEMPORARY BARRIER OR DAM WlH CONTROLLED STORMWATER RELEASE STRUCTURES WHICH IS 12•SEDIMENT TRAP #2 SHALL REMAIN OPERATIONAL, DIVERTING THE RUN-OFF FROM THE ALLEY FORMED BY CONSTRUCTING AN EMBANKMENT OF COMPACTED SOIL ACROSS A DRAINAGEWAY. IT INTO THE TRAP UNTIL THE ALLEY AND UPLAND AREAS ARE STABILIZED. ONCE THE ALLEY HAS IS USED TO DETAIN SEDIMENT -LADEN RUNOFF FROM DRAINAGE AREAS 3 ACRES OR GREATER BEEN PAVED AND THE UPLAND BUILDING AREAS STABILIZED OR WRAPPED IN SILT FENCE, THE SEDIMENT TRAP CAN BE REMOVED. FOR ENOUGH TIME TO ALLOW MOST OF HE SUSPENDED SOLIDS TO SETTLE OUT IT CAN BE THE ENTIRE SITE IS STABILIZED AND THE INSPECTOR HAS GIVEN APPROVAL, 13 THE . CONSTRUCTED ONLY WHERE HERE IS SUFFICIENT SPACE AND APPROPRIATE TOPOGRAPHY CONTRACTOR IN SILT CONTRACTOR CAN REMOVE SEDIMENT BASIN#1. THE BUILDING PADS CAN BE WRAPPED MAXIMUM EFFECTIVE LIFE IS 18 MONTHS UNLESS DESIGNED AS A PERMANENT POND BY A FENCE FOR STABILIZATION MEASURES TO ALLOW THE REMOVAL OF THE SEDIMENT TRAPS AND QUALIFIED PROFESSIONAL. SEDIMENT BASIN. NO ITEM SHALL BE REMOVED UNLESS THE UPSTREAM AREAS ARE STABILIZED OUTLET PROTECTION. AND THE INSPECTOR GIVES PERMISSION. AT THE TIME OF TEMPORARY SEDIMENT BASIN 1 S THE INSTALLATION OF RIPRAP CHANNEL SECTIONS AND/OR STILLING BASINS BELOW STORM REMOVAL AND THE INSTALLATION OF THE PERMANENT STORM SEWER SYSTEM, THE CONTRACTOR DRAIN OUTLETS TO REDUCE EROSION AND UNDER-CUT77VG FROM SCOURING AT OUTLETS AND TO SHALL REMOVE THE TEMPORARY BARREL CONNECTION INTO THE EXISTING STRUCTURE ON REDUCE FLOW VELOCITIES BEFORE STORMWATER ENTERS RECEIVING CHANNELS BELOW THESE BERKMAR DRIVE AND PLUG ITS OPENING WATERTIGHT D OUTLETS. 14.WITH THE REMOVAL OF THE SEDIMENT BASIN, THE CONTRACTOR SHALL INSTALL THE UNDERGROUND DETENTION FACILITY FOR THE SITE THIS SYSTEM SHALL BE OPERATIONAL, ONCE CULVERT INLET PROTECTION. THE SITE IS STABILIZED. INLET PROTECT70N MEASURES SHALL REMAIN IN PLACE TO PREVENT A SEDIMENT FILTER LOCATED AT THE INLET TO STORM SEWER CULVERTS WHICH PREVENTS RUN-OFF FROM REACHING THE DETENTION FACILITY DURING THE CONSTRUCT70N ACTIVITY. SEDIMENT FROM ENTERING, ACCUMULATING IN AND BEING TRANSFERRED BY THE CULVERT. IT 15.MAINTAIN ALL EROSION CONTROL MEASURES AS SPECIFIED IN HE VIRGINIA EROSION AND ALSO PROVIDES EROSION CONTROL AT CULVERTS DURING THE PHASE OF A PROJECT WHERE SEDIMENT CONTROL HANDBOOK, REMOVING ONLY WHEN APPROVED BY THE LOCAL PROGRAM ELEVATIONS AND DRAINAGE PATTERNS ARE CHANGING, CAUSING ORIGINAL CONTROL MEASURES ADMINISTRATOR IN ACCORDANCE WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. TO BE INEFFECTIVE. 16.ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 SAFETY FENCE. • DAYS AFTER FINAL SITE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER A PR07FCIVE BARRIER INSTALLED TO PROHIBIT UNDESIRABLE USE OF AN EROSION CONTROL NEEDED UNLESS OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM ADMINISTRATOR. TRAPPED MEASURE. SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND PERMANENT STABILIZATION. SEDIMENTATION. PERMANENT SEEDING WILL BE APPLIED TO ALL DISTURBED AREAS AS PER THE PERMANENT STABILIZATION OF THIS EROSION & SEDIMENT CONTROL NARRATIVE. SOIL DESCRIPTION AFTER CONSTRUCTION IS COMPLETED, ALL DISTURBED AREAS OF THE SITE WILL BE LIMED, 27B -EL/OAK LOAM-27 TO 79 SLOPES. THESE DEEP, WELL DRAINED SOILS ARE FOUND ON FERTILIZED, AND SEEDED AS PER CURRENT VDOT STANDARDS. HIS SHALL CONSIST OF HILLSLOPES SLOPES. MODERATE RUNOFF, WlH MODERATELY HIGH TO HIGH PERMEABILITY. THE FOLLOWING. TOP SOIL - 2' DEPTH 27C-ELIOAK LOAM-77 TO 157 SLOPES. THESE DEEP, WELL DRAINED SOILS ARE FOUND ON LIME - 2 TONS/ACRE HILLSLOPES SLOPES. MODERATE RUNOFF, WlH MODERATELY HIGH TO HIGH PERMEABILITY. FERTILIZER - 600 LBS/ACRE OF 15-30-15 SEED - ERNST 5311 CONSERVATION SEED MIX - ERNMX-114 (45 LBS/ACRE PENNLAWN CREEPING RED FESCUE, 37.5 LBS/ACRE ARGILS KENTUCKY BLUEGRASS, 37.5 LBS/ACRE 39D - HAZEL LOAM-157 TO 25Y SLOPES. THESE SHALLOW, EXCESSIVELY DRAINED SOILS ARE PARK KENTUCKY BLUEGRASS, 15 LBS/ACRE ANNUAL RYEGRASS & 15 LBS/ACRE PLEASURE HILLSLOPES MODERATE RUNOFF, WITH MODERATELY HIGH TO HIGH PERMEABILITY. PERENNIAL AFTER THESE AREAS ARE STABILIZED THEY WILL BE MOWED AND MAINTAINED ON A REGULAR BASIS. 65B - FAIRVIEW SANDY LOAM-27 TO 79 SLOPES THESE DEEP, WELL DRAINED SOILS ARE FOUND ON INTERFLUVES. MODERATE RUNOFF, WITH MODERATELY HIGH TO HIGH PERMEABILITY. MAINTENANCE.• IN GENERAL, ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CHECKED DAILY AND AFTER EACH SIGNIFICANT RAINFALL. SPECIFIC ATTENTION WILL BE GIVEN TO THE STORMWATER RUN-OFF CONSIDERATIONS.• FOLLOWING ITEMS.-STORMWATER A. SEDIMENT BASINS AND TRAPS WILL CLEANED AND MAINTAINED IN MANAGEMENT. THE STORMWATER RUNOFF FROM HIS PROJECT DRAINS TEMPORARILY TO VIRGINIA EROSIONN & SEDIMENT CONTROL HANDBOOK. ACCORDANCE WITH THE VV THE SEDIMENT BASIN & TRAP. THE SEDIMENT BASIN AND THE SEDIMENT TRAP WILL BE REMOVED AFTER B. ALL GRAVEL OUTLETS WILL BE CHECKED REGULARLY FOR SEDIMENT BUILDUP HAT THE DEVELOPMENT OF HE VICTORIAN HEIGHTS PROJECT WILL PREVENT PROPER DRAINAGE. IF THE GRAVEL IS CLOGGED BY SEDIMENT, THE GRAVEL WILL BE REMOVED AND CLEANED, OR IT WILL BE REPLACED. C ALL SILT FENCE BARRIERS WILL BE CHECKED REGULARLY FOR UNDERMINING OR DETERIORATION OF THE FABRIC AND REPAIRED AS REQUIRED. SEDIMENT SHALL BE REMOVED WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHED HALF WAY TO THE TOP OF THE BARRIER. D. ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO SEE THAT A GOOD STAND IS MAINTAINED. AREAS SHOULD BE FERTILIZED AND RESEEDED AS NEEDED. COTT/R. CULT No. 35791 01/06/22 U) -, Z z > O O O a a W a W 0 J 0 F H z z 0 � a f UJ W W r�o J J 0 ll r4 N za � (D .i o (3) 7- [` M M N 4 M Nt N CD N (N Q > LU J_ > U) LU Q U Y LU U) W LU LU L.1_ Q O O N U O a 1__1 z LU 0 LU Q z Q 0- M C) C) (V C) O V/ /� V 1_� LU F1 11:1� O U I LU 9 Q Z J O O U z W 0 LLJ U) O6 O F-4 ce W w w (n 202196 SCALE AS NOTED SHEET NO. 3 Pared construction entrance for erosion control plans 1992 3.05 1992 3.05 1992 3.07 1992 3.17 �TH 0F� CONSTRUCTION OF A SILT FENCE CONSTRUCTION OF A SILT FENCE GRAVEL CURB INLET SEDIMENT f�Gl CONSTRUCTION 7O• MI" RUCTION - (WITH WIRE SUPPORT) (WITHOUT WIRE SUPPORT) ACCESS IIII- 3' SM-2A ASPHALT TOP FILTER STONE -LINED WATERWAYS SCOTT R. LLINS'Z COURSE 1. SET POSTS AND EXCAVATE A CXe 2. STAPLE WIRE FENCING TO THE POSTS. 1. SET THE STAKES. 2. EXCAVATE A 47X 4" TRENCH C] H 2>< 2% EXISTING TRENCH UPSLOPE ALONG THE UNE UPSLOPE ALONG THE LINE OF U No. 35791 PAVEMENT OF POSTS. STAKES. B MAX. `� �_�� W '0,�0� 01/06/22 �wQ' -6' MN. 2!A AGGREGATE BASE ��. / i % � 4-12" �s`�IONAL F'��1 z . .. .. _ .. � -. -. yam PS4EILE - ---------------------------- ------------- --------------------- - Z (w 70' M'N. IIII SCE FLOW Z01 I Nil"IUN ASPHALT PAVED ACT(-- YUSHRACN � IO KEY IN FILTER U FILTER CLOTH lulls-II'lll CLOTH 6"-9" o a EXISTING ! � / 3. STAPLE FILTER MATERIAL 4. BACKFILL AND COMPACT 2% 2% PAVEMENT1 FLOW III I IIII �II TO STAKES AND EXTEND THE EXCAVATED SOIL. 2% 12' WIN. -a. IT INTO THE TRENCH. V-SHAPED WATERWAY WITH STONE CENTER DRAIN N - / GRAVEL FILTER 17 NOTE: A GRANULAR FH,TER MAY BE SUBSTITUTED FOR FILTER CLOTH. Ln J o -_ _: _ 3. ATTACH THE FILTER FABRIC TO THE WIRE 4. BACKFILL AND COMPACT THE a ( -- -- - --- / RUNOFF WATER WIRE MESH F- O r FENCE AND EXTEND IT INTO THE TRENCH. EXCAVATED SOIL. ,POSITIVE DRAINAGE j FILTERED WATER -MUST EXTEND FULL WIDTH I----O SEDIMENTTO /� _ CL OF INGRESS AND EGRESS TRAPPNG DEVICE - / • ' O a OPERATION 3 Ui ��- lu e W 0 CL / a iLAd % FLOW _ ----- - z/3 -- 4-iz - - = U) a � 5 R i 4 R pl d _IF zo >o j cL -TZ' MIN. nwE DRAINAGE J^IIII %'� IIII III SHEET FLOW INSTALLATION SEDIMENT ��I o ° - _ - - a a 0 * TO SEDIMENT // _ - _ Z IFtA_NPING DEVICE / � �/ (PERSPECTIVE VIEW) a O Cl_ 0 Z IIIII- CONCRETE GUTTER 12" p_ IIIII _ Lu U J Q3 FILTER CL OTW!!,�� I - I I I�11 CURB INLET FILTER CLOTH �n II�ID IIIII- KEY IN FILTER //\ F j Z A A CLOTH 6" -9" V SECTION A -A I �/ o FLOwt e \\� - H 0 a g¢ o EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. - - - i IIII,1 I SPECIFIC APPLICATION l_q m A nunwoau bale lap 01 I OICh anus't tic In allictI lrllh a nuouln all 1 WCh balLock `� �} {) '' \\ PARABOLIC WATERWAY WITH STONE CENTER DRAIN w > LU to < FILTER FABRIC � \� THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS W Z > o ,,hut LAX t pi a RIII1111-Wa � trade holxe Ib L A (hetuda Ot I alle e: is d1 ro alll WHERE PONDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO CAUSE NOTE: A GRANULAR FILTER MAY BE SUBSTITUTED FOR FILTER CLOTH. O // IIIIII� L OIL�IIIII In e��IHe. 1l'BStI w'alE Illitet be L:U sled BR'ar' hUtll the HIII.LIEe fU 311 INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND UNPROTECTED O F fot'e(1 elthll" a ea 10 10110Ve ie(lalldll -111 He hlllefll >IIaO be N et'ell[e(1 hOln POINTS A SHOULD BE HIGHER THAN POINT B. AREAS. LL to c fip I eatentux Stolm thaws. (Idthes OI wateicomse5. III WIREDRAINAGEWAY INSTALLATION 0 Z o -I (FRONT ELEVATION) • GRAVEL SHALL BE VDOT #3, #357 OR 5 COARSE AGGREGATE. H O o PAVED WASH RACK Source: Adapted from Installation of Straw and Fabric Filter 0- M>,I Source: Adapted from Installation of Straw and Fabric Filter farriers for Sediment Control Sherwood and W ant Plate 3.05-2 Barriers for Sediment Control, Sherwood and Wyant Plate 3.05-1 y Source: Va. DSWC Plate 3.07-6 Source: USDA-SCS Plate 3.17-2 C a a 1992 3.08 1992 3.18 1992 3.36 1992 3.38 0 SILT FENCE CULVERT INLET PIPE OUTLET CONDITIONS TYPICAL ORIENTATION OF FENCING AND ARMORING PROTECTION A A TREATMENT - 9 0 ENDWALL (SOIL STABILIZATION BLANKET) CUT/FILL QUANTITIES: cli N N cli 3d - ' SHALLOW F .\-I z m o SLOPE I VOLUME OF CUT FOR LIMITS OF DISTURBANCE: S,000 CU. YARD a 1.1 0 .E ------------ --- ---- -]----------------- ---- d° I VOLUME OF FILL FOR LIMITS OF DISTURBANCE: 42,000 CU. YARD o `T---T-' ________ ON SHAL SLOPES, STRIPS OF O TOE OF FILL I _ PIPE OUTLET TO FIAT NETTING PROTECTIVE COVERINGS DRIP LINE I NET VOLUME OF FILL FOR LIMITS OF DISTURBANCE: 37,000 CU. YARD 0 +F- CULVERT - AREA WITH NO DEFINED MAY BE APPLIED ACROSS 1�I; I CHANNEL THE SLOPE. j PLAN v[Ew 6" OF TOPSOIL SHALL BE HAULED OFFSITE TO A PERMITTED (SWPPP) SITE BERM SNOW FENCE I AS EXPLAINED IN EACH PHASE NARRATIVE AND REITERATED HERE, PERMANENT OR 0 �--� to Lit WHERE THERE IS A BERM AT THE TOP OF THE SLOPE, = I TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS 0 I I BRING THE MATERIAL OVER THE BERM AND ANCHOR IT 0 x BEHIND THE BERM. AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. ---- ------------*------�-- --------'--- ---- - d AMI AM T a0i °W so I STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE f` y TOE OF FILL SECTION A -A FILTER CLOTH KEY IN Br-B-; RECOMMENDED FOR E� PERIMETER SLOOPE BIM I "'" NM AT FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 3o DAYS. M Z s " M W 0 i BOARD FENCE r+ PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR SILT FENCE F ON SLOPES, APPLY con IIS�TOWARDSEMBANKMENT IF ROW A �- TO THE DIRECTION OF FLOW CORD ONCE MORE THAN ONE YEAR. N a IF MINIMUM PROTECTIVE COVERING PARALLEL AVD ANCHOR SECURELY. FLOW A 3d° (MIN.) - PLASTIC FENCE M Q ** d ! - CORRECT METHODS OF TREE FENCING It, z OPTIONAL STONE COMBINATION --- - BRING MATERIAL DOWN N PIPE OUTLET TO WELT, LU DEFINED CHANNEL L- I III+ - °' 1 LL I LEVEL AREA BEFORE T °, 1 5, PLAN VIEW TERMINATING THE INSTALLATION. TURN THE END 1 L UNDER a AND STAPLE AT 1Y INTERVALS.^' 0 FLOW ti 0 9. -• DITCH FLOW _ \ ~i O 2.5' / c d IN DITCHES, APPLY PROTECTIVE COVERING .. O i PARALLELSCHECK TO TIE DIRECION OF FLOW. W J W USE CHECK SLOTS AS REQUIRED. OF Q SECTION A -A - JOINING m IF AT L THE CENTER OF tAY1 'I� _. 1 FILTER CLOTH KEY IN 8"-8": RECOMMENDED FOR ENTIRE PERIMETER THE DRCN IF AT ALL POSSIBLE A� J 1 O NOTES: 1. APRON LINING MAY BE RIPRAP, GROUTED RIPRAP. GABION AFow J J BASKET, OR CONCRETE. o VDOT 13, #357 OR #5 COARSE AGGREGATE CLASS I RIPRAP 2. La IS THE LENGTH OF THE RIPRAP APRON AS CALCULATED e+ CORRECT TRUNK ARMORING a TO REPLACE SILT FENCE IN - EXPECTED -WHEN 00 USING PLATES 3.18-3 AND 3.18-4. 00 !/� HIGH VELOCITY OF FLOW IS IXPECTED 3. d = 1.LESS 5LTI AN 8 �� MUM STONE DIAMETER, BUT NOT TRIANGULAR BOARD FENCE LU VU) L7�L o O O ` O Source: Adapted from VDOT Standard 3 Sheets and Va. DSWC Plate 3.08-1 Source: Va. DSWC Plate 3.18-1 Source: Adapted from Ludlow Products Brochure Plate 3.36-1 Source: Va. DSWC Plate 3.38-2 O U ITS 1992 3.01 1992 3.07 TEMPORARY DI IT DIKE 1992 3.14 o SAFETY FENCE SILT FENCE DROP INLET EXAMPLE PLAN VIEWS OF U S PROTECTION BAFFLE LOCATIONS IN Y p p o gi g iii a DROP INLET Compacted Soil SEDIMENT BASINS w LU O 2 X 4• WOOD FRAME LU . WITH GRATE son ■■■ T 16' min D 2 D NO SCALE °6 NowFRAME III,.. Now -Flow 1.5' HLVt. . I,. (I IIII_ Ul INFLOW/RISER V1 � OL Of (' Z i� 3- MIN. ��`� WillW11111L01111W11111E0111\ D/2 r� 4.5' min. NORMAL POOL \ = TOTAL DISTANCE FROM W Z AROUND THE POINT OF INFLOW LLU t'''J GATHER TIE BAFFLE TO � V � L TO THE RISER. EXCESS ..,.:. ,...7.-: '... - v., .......y.... I AT CORNERS `1 NORMAL POOL - L U w Z O PERSPECTIVE VIEWS �� 0i2 RISER t - �""��'I Z T STAKE ` o PERSPECTIVE VIEW 1t'� C`I FABRIC , I� ~� n lllJJl < > s yb �q NORMAL POOL RISER INFLOW a lk ebH„'x+x - r x�� £ OD ^; IIII Iq. l' O `U O O 0 BAFFLE ''P T D - U ELEVATION OF STAKE AND �ti \ ;', ; 2 Di2 ~ ° ~ FABRIC ORIENTATION DETAIL A `Z' 91 J INFLOW U V SPECIFIC APPLICATION -O np SHEETS OF 4- X IF X 11r EXTERIOR IF ^ W -° .31 u.a rm. PLYWOOD OR EOMVALENT 0 li. ON Pill THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE THE k CC .E.. ,�. ! LJ„•,•„• INLET DRAINS A RELATIVELY FLAT AREA (SLOPE NO GREATER RISER CREST 0_El CL. U) ,U G .,,s`.a w� THAN 57 WHERE THE INLET SHEET OR OVERLAND FLAWS (NO- S' MIN. N EXCEEDING 1 C.F.S.) ARE TYPICAL. THE METHOD SHALL NOT i 4' i iMINJOB NO. o PERSPECTIVE VIEW PERSPECTIVE VIEW APPLY TO INLETS RECEIVING CONCENTRATED FLOWS, SUCH AS i i i ODOR S ROUND. SET TO ARE SEE Ir A202196 PLASTIC FENCE METAL FENCE IN STREET OR HIGHWAY MEDIANS. LF ST 3• INTO THE GROUND. ° B• SCALE ° AS NOTED o Source: Adapted from Conwed Plastics and Plate 3.01-1 Source: N.C. Erosion and Sediment Control rL VDOT Road and Bridge Standards Planningand Design Manual- 1988 Plate 3.07-1 - SHEET NO. � Source: USDA-SCS Plate 3.14-6 N 4 ° s H SEDIMENTCONTROL EROSION CONTROL * IIOOK I HANDBOOKEROSION CA GRAPHIC SCALE * SA -0 ------- 0- SAFETY FENCE 301 30 o u 30 Go Izo CE CONSTRUCTION ENTRANCE 3.02 ' CR CR CONSTRUCTION ROAD STABILIZATION J. ( ) IN FEET03 1 inch = 30 ft. I SF �� SILT FENCE 305 1 lP STORM DRAIN INLET PROTECTION 3.07 NOTE: MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST NOTE: SLOPES GREATERTHAN 3:1 SHALL BE PLANTED WITH NATIVE tTEEP SLOPE MIX WITH STEP WITH ANY LAND DISTURBANCE ACTIVITY ANNUAL RYEGRASS BY RNST CONSERVATION AND SHALL BE MADE FUNCTIONAL BEFORE SEEDS AT A RATE OF 6� LBS. PER ACRE, OR 1 LB invent Basin #1 Design Ige area (acres) ,volumes: (using 2' contour intervals) elevation (ft) contour area (so 516.00 131.0 518.00 865.0 520.00 2005.0 522.00 3343.0 524.00 4807.0 526.00 6380.0 TH Sediment Trap design #1 MIN. ORESI OF TEMERGENCY �F ]'WITXOUTWISPILLWFY $pLLWAY 3.65 drainage area (acres) (< 3 ac) 1.51 1 VARIAR £ /T DESIGN HIGH WATER s tu- oRM ntv.) trapvolumes: CREST OF STONE WEIR PAIAq E volume C Qy. ( y) _ - - --_---- GO"M elevation (ft) area (so wlume(cf) volume(cy) Ems. SCOTT R. LLINSZ 0 Wa ' °• 496 1049 0 0.0 O I-+ RISER CREST 33 • • U No. 35791 11, NRr sroRAGE DIWATEMNG oan¢ 496 1989 2,966 110.7 DRY STORAGE - N vhnuHlE 136 • MEf SrO E 500 3059 7,998 296.2 �p 01/06/22 c 332 0 0 0 0.0 O��sSIONAL 632 0 0 0 0.0 WET STORAGE 5_EgMENr CI OIR PoINI ERREOUCED 1045 i4 t' MAX. (IXGYATED) To C.Y./ CLOTH 01✓tGNAL GROUNO `FITER EUX, 0CULVERT INLET PROTECTION 3.08 UPSLOPE LAND DISTURBANCE TAKES PLACE. PER 1,000 SF, UNLESS PECIFIED OTHERWISE. wet storage: *SEE PLATE 3.I3-1 CONSE AGGREGATE" CIl55 I RIPRAP fn wet storage required (cy) (67*DA) 101.2 z wet storage: Sediment Trap design #2 bottom of stone weir (ft) 497.83 0 DD TEMPORARY DIVERS/ON DIKE 3.09 wet storage required (cy) (67*DA) 245 design high water (ft) 524.00 wet storage provided at this elevation (cy) 101.2 \ 0 V1RWB £ dewatering orifice elevation (ft) 621.2 top of dam (ft) 526.00 0 ® drainage area (acres) (< 3 ac) 0.20 �-�-� wet storage provided at this elevation (cy) 245 top width of dam (ft) 10.0 slope of wet storage sides 2:1 ► TEMPORARY ROW DIVERSION 317 trap volumes: CREST OF STONE WEIR Ate• available volume before cleanout (cy) (min. 34*DA) 124 bottom of basin (ft) 516.00 weir length (ft) (6xDA) 9.1ORIGINAL \ ` elevation (ft) area (so wlume(cf) volume(cy) GI ND \ cleanout elevation (ft) 619.7 approx. bottom dimensions: 52'x5' dry storage: bottom of trap elevation (ft) 496 w o ST SEDIMENT TRAP 3.13 514 76 0 0.0 �a A distance from cleanout to orifice (ft) (> V) 1.50 upstream face slope: 2:1 / dry storage required (cy) (67*DA) 101.2 bottom trap dimensions: 10k99' \ F 516 324 371 13.8 downstream face slope: 2:1 crest of stone weir 499.0 top of dam elevation (ft) 500 w W NA DRY srUI:L - ,� vAu4HLE SB O SEDIMENT BASIN 3.14 518 700 1,371 50.8 dry storage: \ \dry storage provided at this elevation (cy) 101.2 top width of dam (ft) 10' \ f CL ry i dry storage required (cy) (67*DA) 245 baffles: YES \ O < 3 0 0 0 0.0 / \ slope of dry storage sides 2:1 top trap dimensions 27'X115' u or I principle spillway crest (ft) 523.0 length of flow, L (ft) 20 v v v O 0 0 0.0 WET STORAGE \ \ 1 O N OP OUTLET PROTECTION 3.18 (IXGw ED) '' "v dry storage provided at this elevation (cy) 245 effective width, We (ft) 203 \ \ \ \ \ \ \ \ \ U) w a \ FILTER CLOTH OIRCINAL - V A A GRIX,NO diameter of dewatering orifice (in) 4.0 L / We (baffles not required if 2) 0.10 \ \ \ \ \ \ \ \ \ J z ELEV.diameter of flexible tubing (in) (orifice+2") 6.0 \ V A V v v O > g s RR RIPRAP 3.19 wet storage: .SEE PLAW 3.13-1 COARSE AGGREGATE- cuss I RPRAP / collars: YES \ \ \ \ \ \ \ \ F 0 O wet storage required (cy) (67*DA) 13.4 / runoff depth of water at spillway crest (ft) 7.0 \ \ \ \ \ \ \ \ O a Q_ F o IS TS TEMPORARY SEEDING 331 bottom of stone weir (ft) 515.95 / / C (use 0.45 for bare earth) 0.45 slope of upstream face (Z1) 2:1 \ \ \ \ \ \ \ \ \ u < z w r wet storage provided at this elevation (cy) 13.4 tc (min) 14 slope of barrel (Sb) 9.75°/R v V /%\ \ V V A A \ \V A V v H w Q <3 PS PS PERMANENT SEEDING 3.32 slope of wet storage sides 2:1 12yr 3.6 Q 2yr 5.9 length of barrel in saturated zone (Ls) 68.86 ((`� \ \ \ \ \ \ LU rM z Q weir length ft 6xDA 5.0 125yr 5.3 Q 25yr 9.6 number collars required 2 \ \ \ \ z z O w 9 O( ) \ \ \ \ O > < w MU MU MULCHING 335 dry storage: bottom of trap elevation (ft) 514 / dimension of collars 3.4x3.4' ; 1 \ \ \ \ \ \ \ g <� / principle spillway: \ \ > rn dry storage required (cy) (67*DA) 13.4 bottom trap dimensions: 4'X19' \ I I \ w > w U) o / available head (ft) 1.00 emergency spillway: NO \ \ TP r TREE PROTECTION 3.38 crest of stone weir 517.0 top of dam elevation (ft) 518 diameter riser in 24 required capacity Q25-Q cfs 0.0 I / I I \ z > d storage provided at this elevation c 13.4 to width of dam ft 6' ( ) q y ( P) ( ) I 1 I 0 O dry 9 P (Y) P O spillway capacity, Op (cfs) 13.00 bottom width (ft) N/A I � � I \ � Ow F DC DC DUST CONTROL 3.39 slope of dry storage sides 2:1 top trap dimensions - 20'X35' diameter trash rack (in) 36 slope of exist channel (ft/ft) I I ) ' - p o 0 barrel length (ft) 20.5 minimum length of exit channel (ft) I I / - head on barrel through embankment (ft) 10.00 crest of spillway (ft) - / / - /'� < 0 BM + + SOIL STABILIZATION BLANKET 3.36 ( \ \ \ ( L _ - / \ - a > -o + + + \ diameter of barrel (in) 15 - - - = f = = W o ° PROPOSED TEMPORARY 1 / / // (� LANE STOCKPILE SURBY RLOUNDEDT FENCE 1 11 / - �NOO�BROUTE 659 / \I \ CONTRACTOR STAGING AREASTPTE/ WITH FUELING TANK, DUMPSTER, / / 40'R/W _ ----- / 1AND PORTA-POTTIES � RC CA CA Cli WvI T�_ SF - \ / w/ WIRE / I- 00 0 SUPPORT NOTE: SILT FENCE, SAFETY pC4 CD / - / c - /--- / TS ♦ / FENCE, AND TREE PROTECTION 0 0 / - \ � �__ r-_--� � � r• �� _WASH RACK / / ♦ / / 'SHALL BE INSTALLED AT LIMITS' ` OF DISTURBANCE. THSE ARE - / / - �aa� ■F�r��EE fffffrrrf� �t��a��Ti« �� -- _ FFSET FOR GRAPHICAL �PURP NAGE IVIDES /I ( - - - - -' -// / / / / / / / / / ARE MEASURED IATTHELIMITS __-- CE 12'x7o' MI� / A OF DISTURBANCE OR 1 / - FLOW DIRECTION ARROW (TYP \ I 3 - DIV DIKE. _ / `\ --- F 1�11 - NOTE: THIS CONSTRUCTION ENTRANCES L \ ER E / - - _ _ -_J _ ____�- _ \ / r NOTE:CONTRACT�TO \ - / \ - f � ENSURE POSTIVE - � \ / / I I O INSTALLED, OPERATED, AND MAINTAINED BY THE / / \� $ I Rwo CONTRACTOR. ALL CONSTRUCTION TRAFFIC IN THIS / \ � PROPOSED LIMITS OF M z o _ __ / / AREA SHALL UTILIZE NSTRUCTIONENTRANCE./ DISTURBANCE TYP. w 3 DD DRAINAGE ALONG \ 3 f / / / i / / ♦ V (TYP.) ' DIVERSION DIKE - - / �\ - - - - SOIL TYPE 65B - \ \ \ \ \ i I J / 'SOIL TYPE 65B / / / / / / / / / / / / f ' / DITCH ALONG _ _ N C o _ / DIVERSION DIKE TO G \----- \------------// \� \ I �� / / // // / / _ / / N BE LINED WITH - w / TS (�/DRAINAGE DIVIDE (TYP. , / / _/ / // // // L // ■ \ /JUTE > TP o LU CONCRETE WASH / O OUT AREA -J R/W DIVERSION TO BASIN N 1 MU _ 1 / _ RIPRAP OUTFALL PROPOSED LIMITS X _ - _ _ = _ _ - S _ \ 1 \ \ \ r _ _ > = = _ R/W DIVERSION AND DIVERSION DIKE, / / / / / ✓ g L=12', W=6', D=2' / % _ OF DISTURBANCE (TYP.) - - _ _ - _ = _ _ - _� _ _ = _ - _ _ _ = i -- J rl \ - - - - - - -' / TMALL SEDIMENT TRAPPING DEVICE / / / / x �/ / 6 9 \ / SAF / / W J o ` FOR CONSTRUCTION ENTRANCE / /52° / 518. /' �x % • l 49 / / - \ / _j J y / / / / 5p2 5 9 / / > S A A \ V DC SOIL TYPE - - / /� 9 / / / v = / / - \ AREA TO BASIN = 2.44 ACRES \ / / XJ / / OIL TYP z7C TS / /' x - / �_ I BOUNDARY (TYP.) tt'-� / / / x j / / / / O / x - - / / / � \ TP \ \ x � - - - \ + 1.21 ACRES OF OFFSITE UNDISTURBED - - -I / - AREA TO SEDIM€NT TRAP =1.o ACRES / o °o / / / o x x PROPOSED FENCE - - - - I / �� /5 / / �IPRAP OUTFACE x 2 7 ✓x 7 / / uJ M -SOILTYPE 2 B / / / AROUND SEDIMENT AREA \ \ i / i / � --- -- 1 / / / / Z / / / / / / L=12', W=6', D=2' , x > // / / / / / L9 O x�.xx x BASIN, \ TS \ i I I//-' / // // //// / ' /� r� 1N x-•'r` `x xy0 �\OFx�'// / // // / ~ O 3 \ I / - / / pO / / // ,- p \ xx:xxxxxxxxx \ \ - -_ IJ, �/ ♦ '-- / / / / xxx -1� M - \\x�x \\ 3 / j / �' /i TS/ // // // ��' // // /x OPT' / // �� / _J O v o x x x x lx / -/ / ♦�' ,A: , / / / / \ \ \ { • \ \ / / NOTE: CONTRACTOR TO - / / / _f // 7o FOOT LONG ,x �/ / / / / / \ Q N l ; ; x „� . x . (x ? ; . x .. � \ � x x \ \ / � �-I, / / NSURE POSTIVE / / / / / Y / / / 4 FOOT HIGH BAFFLES x � 1 / / / / i = O z o SOIL TYPE 2jC ` x x \ \ \ \ / I / / RAINAGE ALONG >- / / / / / / / _--' N L11 gM . x x Y \ / SOIL YPE 2 / / / DD ♦ / / / / / / / / / - SF \ ♦ / "" x x 82 FOOT LONG / 7 / / DIVERSION DI /�♦ / / / PROPOSEb FENCE / / w / / U x x ; x x x x x x x x x x % % X\xxxxx SOIL TYPE z7B 6 FOOT HIGH BAFFLES / / •� �/I /// / / ••� / / / R UND SE TRAP - `�"�T MENI . 1 / / A O DI T / �T` /� \ O \ w/WIRPx x x M ------ / / o �/ x x x x �x \x x \ / / / / / _ / / CIP / Yam/ Y \ ; ; x x x x xxxxx I RAPOUTFALLx .\\ \x x x x 3 / / -- _------/ / / / // / / / \ O \\ --' > \ SUPPORT - _ / \ \ c \ \ / x x x xxx -20', W=6', D=2' x x % x i8x x x x x x x *� - / I / // / / - - - - - / / : CONTRACTOR TO > / / / / / / / / %c \ r \ ,-'' E x / _ \ \\\ >Ic♦ \ S2 ,, f �, / // // /---- -- / �fNSUREPOSTIVE / // ' ///-'--� ----'' / - Ul ` \ \ i - ♦ / , / i D DRAINAGE ALONG / / \ \ \`o '�♦ // - 3� / y/ / ///// sOILTYPE 39D- - -,, VIVERSIONDIK3F / / / \ ---'- \'''' V) 0 z \\ 2 / p - - - AREATO SEDIMENT \ RIPRAP OUTFACE ' RIPRAP OUT' r TRAP = 0.2o ACRES L=1o'' W-6', D=2' TS 2 - _ - _ - / _ _ _ s / //>X �cA \ \\ ,� \/ W = Q Z ix- O Z DITCH ALONG \ \ _ x - x _ x / _ j j \IF _ DIVERSION DIKE TO \ ,i 1 - - - - Tx see x STR y_ 526 %5i4`� -x - / 6� - --, - \ \ / / I / in w BELINEDWITH \ - \ / l / / / (/) JUTE �-�� y/ ! ��iw ��`�_� / O o \ SOILTY E 39D 2 J LU \ j SAF \ -�-- xxx-=x xx x x -x�x�� x xsx -==_ �r51 1.- _ •\ -_--_ - \ __- -' \ �� ///'' i ' i'\� /// \ \\\ \ I / / LNL w oa x 1 x� �x �-�„_ s x IP \ • TB, \ '/ i /i ' i i � i ' / �. � .- -.` \ f I / l l� L.1_ n / \\ a - �R4C i POF, x x Oi DC M (20.5 LF @ 9.750/6, 11=516, \ ---- 15" RCP \ �� // / � � j „� � %� = - \ \ \ � � I I 1 I Q x x x x�/ / X X=x�r1f7 X \ 10=514) THE CONNECTION C 9 --__ _---` �L �'� �' /_/� / i i / / = l \ l t / 1 I III _ ,BETWEEN THE � --SER AND THE ---------- ----" BARREL HALL BIE WATERTIGHT. - _ - / / �' / /�' „� -' /�\ �\ \I I\\\ 1 1 I I I C O s \ V / / _----------- --, N BARREL SHALL CONNECT TO IP ------ PERMANENT (P) STIR 4 THRU F1 0 DRIVE ----- - - \\ / ___ _------- BERKMAR E PROPOSED TEMPORARY 24" CMP RISER RIM (P) STIR 1 DOGHOUSE MH - - \ \ \ / / / // / // / / / /' / \ I / ( 1 1 I / ✓ \ \ ( 1\ \I / STATE ROUTE 1403-----ELEV.= 523.00'. RISER TO INCLUDE A 1. oINTO EXISTING STORM SYSTEM _ _ - - \ \ \ \ \ / / / I / ) \/1 / 1 It J ` ____--- ---- VARIABLE WIDTH R/W DEWATERING ORIFICE (INV ELEV.=521.20') & STR 4 RIM=526 WILL BE LOWERED- A TEMPORARY TRASHRACK & ANTI -VORTEX -TO FINAL GRADE IN PHASE IIIA / PROPOSED FENCE' 15" RCP I DEVICE. RISER SHALL BE FIRMLY ANCHORED - -I _ ---AROUND SEDIMENT -_�-- / _ - - - - - - _ -TO PREVENT FLOATING. RISER TO BE SET IN - - \ \ � _•_:hx-"' \ \ � \ \ \ \ \ I I I \ ? TRAP-------- / - - - - _ - - - - - \ I - - - - - - A MINIMUM OF 30" OF COMPACTED SOIL OR - - - - - - \ Diversion Dike Ditch Lining Calculations Job Number: 202196 _ - - AGGREGATE BASE OVER A 6'X6'X12" - - - - L --THICK GALVANIZED STEEL BASE PLATE, OR _ - - - SET 6" INTO A 6'X6'X18" THICK REINFORCED \ - - - - _ - - / / / - - - -CONCRETE FOUNDATION. NOTE, IF STEEL 1 �� BASE IS USED, SPECIAL ATTENTION SHALL BE GIVEN TO COMPACTION SO THAT 95% - �I_ COMPACTION IS ACHIEVED OVER THE PLATE;, Max S=5A% MMV=3.Ofps EC-2,MaxV=lAfps �EC37rypeA,M�V=7.0fps Sta From Sta To T (min) C Value Area (ac.) CA ccu I (in/hr) Q (cfs) Slope (ft/ft) Earth (n-0.03) Jute(Sod) (n�.05) Vel. Depth Vel. Depth DD left of ST2 ST2 5.0 0.45 0.12 0.05 5.6 0.30 0.1330 2.31 fps 0.21 ft DD right of ST I ST I 5.0 0.45 0.23 0.10 5.6 0.58 0.1250 2.67fps 0.27 ft I ) I 1 I \ (I 1 L - / /I / t 1 1 / A STORM SEWER NETWORK POINT DOWNSTREAM STRUCTURE INVERT ELEVATIONS LENGTH SLOPE SIZE PIPE MATERIAL RIM ELEVATION UPPER LOWER FEET % INCHES 4 3 510.28 509.56 120.76 0.60% 18 HOPE 524.34 3 2 509.46 501.86 95.70 7.94% 18 HOPE 514.00 2 1 499.15 495.50 45.56 8.00% 1 18 1 HOPE 1 505.36 E J U U 0 w a ,w-, w a m a Ln U o JOB NO. 202196 0 SCALE 11I _ 301 I 00 V SHEET NO. 5 SEDIMENTCONTROL EROSION CONTROL * NOTE: SLOPES GREATER THAN 3:3. SHALL BE I HANDBOOKNIIEROSION CA PLANTED WITH NATIVE STEEP SLOPE MIX WITH SA moo- SAFETY FENCE * 3.01 ANNUAL RYEGRASS BY ERNST CONSERVATION SEEDS AT A RATE OF 6o LBS. PER ACRE, OR 1 LB ' PER 1,000 SF, UNLESS SPECIFIED OTHERWISE. CE CONSTRUCTION ENTRANCE 3.02 CR CR CONSTRUCTION ROAD STABILIZAT70N 3.03 NOTE: MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST I STEP WITH ANY LAND DISTURBANCE ACTIVITY 30 0 SF y SILT FENCE 3.05 AND SHALL BE MADE FUNCTIONAL BEFORE lP STORM DRAIN INLET PROTECTON 3.07 UPSLOPE LAND DISTURBANCE TAKES PLACE. I NOTE: DRAINAGE DIVIDE SECTIONS GREATER Sediment Trap design #3 drainage area (acres) (< 3 ac) 0.52NTH Qj trap volumes: CREST OF STORE WEIR�� elevation (ft) area (so wlume(cf) volume(cy)CflOUND O , 517 861 0 0.0 n>v ` °' SCOTT R. LLINSZ 518 1116 986 36.5 DRY STORAGE - y vow ae U No. 35791 11, 519 1396 2,239 82.9 � 01/06/22 c 520 1701 3,785 140.2 07 WET STORAGE �. , 1 �s'SIONAL (IXGV E9) FITER CLOTH R GOUND RIX1N0 ELSE THAN 2% IN SLOPE SHALL BE STABILIZED WITH ; nch = 30 ft. wet storage: a a,a_, coanE wcREG E" cuss: RiRwR LL ClP CULVERT PERT INLET PROTECTION 3.08 A STORMWATER CONVEYANCE CHANNEL IN ' I wet storage required (cy) (67*DA) 34.8 In ACCORDANCE WITH VESCH STANDARD 3.17 1 bottom of stone weir (ft) 518.00 J DD �� TEMPORARY DINERS/ON DIKE 5.09 wet storage provided at this elevation (cy) 36.5 0 slope of wet storage sides 2:1 0 TEMPORARY ROW DINERS/ON 3.11 ' ' weir length (ft) (6xDA) 3.1 dry storage: bottom of trap elevation (ft) 517 \ dry storage required (cy) (67*DA) 34.8 bottom trap dimensions: 19'x48' Tn o ST SEDIMENT TRAP 3.13 F- < \ \ \ \ \ crest of stone weir 519.0 top of dam elevation (ft) 520 w o dry storage provded at this elevation (cy) 46.4 top width of dam (ft) 6' SB SEDIMENT BASIN 3.14 l / \ \ \ _ - - ` ` ` / / / \ \ - \ I \ slope of dry storage sides 2:1 top trap dimensions 31'x6O' o a 3 a O m OP OUTLET PROTECTION 3.18 \\ l /l V A / / / _- V A V A �V v v V v A\ A \ w U) z n // // // �l v\ \\ A A\ vv \ vv vvv vv vv vv v (Il z � g RR CL RIPRAP 3.19 \ 1 / / / / v \ \ I v V A v\ \ Z 0 0 o' I \V A \V A \ \ v\ a a v F o TS TS TEMPORARY SEEDING 3.31 \ / / / \ \ / \ \ \ \ \ u < o z r PS PS PERMANENT SEEDING 3.32 I \ \ - \ /I� \ / / - / ' \ \ \ \ I \ J \ \ Lu MU MU MULCHING 3.35 \ �II \ -\ \ J \\\ I \i J \\ \\ \\ \\ \\\ \ \\\ Ln 2: g a TP TREE PROTECTION 3.38 (\ 1 \\ J I V I l I \ II \ o F- DC DC DUST CONTROL 3.39 \ \ \ \ \ - / / - ' / \ I / / l I / ' - w z0 0 BM +++++ SOIL STABILIZA77ONBLANKET 3.36 \\\ ` \ \�( \\ - / / I / \\ \\\ I \\ // // I /-- _ s� / > o -' DBURN LANE / NOTE: CO TRAC (�O �" W 00 UTE 659- /o„ / / /' - -"-'-" - �/w- _,__-)---ENSURE POSTIVE / S 400'' R/W / - - - /' / °„ °„ o" - - - -._, _ -/ - --� DRAINAGE ALONG IF - -_ ° `-x-"-x-`- _,- - - - - DIV ON DIK D TA / / / NOTE: SILT FENCE, SAFETY 0 T NM i °" °„ °„ - - w / FENCE, AND TREE PROTECTION 0 -----------t------�---- ---� -- -- CONTRACTOR ---\ __ -/------- F� -- / - / SHALL BE INSTALLED AT LIMITS, STAGING AREA / Ip / SF / / OF DISTURBANCE. THSE ARE w N \ WI FUELING TANK, DUMPSTER, / / , / / / FFSET FOR GRAPHICAL ¢ 00 N o E AND PORTA-POTTIES x- / - / �� / w/ WIfFE PURPOSES. DRAINAGE DIVIDES v c to goSUPPO ARE MEASURED AT _ _ -------------------- - . -. _ E LIMITS $44.8 _ _ � vv _ - �� / / / / / / / OF DISTURBANCE ORH o �y��a�� MU / /' DIVERSIONE. 'PROPOSED LIMITS OF ri WASH RACK / / / DISTURBANCE (TYP.) 0 z - - r / y- �- _ - \ - NOTE: CONTRACTOR TO , ___ \-------------------- -- ---I - -- - j - ---54z - 0/ --- - ,moo MIN. / L BE / , i � I'i wD E L / _ ________ /� �STRUCTIONENTRAN ��pBYTH� /' ,p / 54 MAINTA HIS �Y / / / DITCH ALONG \ -- TRAFFIC IN AN / / Cl? ENSURE POSTIVE / J `--- - \ \ - THIS CON ANDo _ _ - NOTE: OPERATED RUCTION TR DIVERSION DIKE TO. - Z I CE. / /3 -- - C \ 3 f i / / IP NSTALLED, ALLCONST TRUCTIONEN / // / ELINEDWITH w _ 0 RAINAGE ALONG $44 / _ - - - I I ! J / CONTRACTOR T LIZETHIS CONS / / (V LU 0 \ DIVERSION DIKE - $42 - \ - _ / p 5HA11y JUTE - Q $40 � / � \ � k ' / ARE W TP I --'' � 536 IZn J \\ I 3 i / /' PROPOSED TEMPORARY // �� ' / // // // /IP / / \ STORM INLETS TO REMAIN -534- _ - \ \ / _ / /AkEA TO SEDIMENT TRAP = 0�2 ACRES / / / / / / Z Q ` / \ \ \ % /STOCKPILE SURROUNDED / / / / / / / ( ) N o / � / � / � / RAINAGE DIVIDE TYP. w = o CLOSED TO ALLOW OFFSITE x - - - - \ \ \ / / / BY SILT FENCE / / _ CLEAN WATER TO DIVERT THRU " ' - \ \s 3 f / / / / C CONCRETE WASH /_ 1 / / / J O _ J ,,� \ � 1 , / / � SITE TO EXISTING STORM ON, x - - - _ \ \ \ I / / / / / OUT AREA/ _ 1/ / / / / L=1o' W=4' D=2' 12 DID BERKMARDRIVE x / \ \ MU I - / / - / / _/ / / / r < . x / N z 3 - - - - - - \ / _ roz - - / ! x = x ENSURE POSTIVE Q Z Q - \ - - - - - 2-4 I $32 \ \ % 536 /' �� =/=Em T -y _ / / / / / / / / / / C dx , NOTE: CONTRACTOR TO o _ AREA TO SEDIMENT BASIN = z5 ACR - = - _ - / - /- - / / / / / 1 ' / / / _ _ /` ` x x DRAINAGE ALONG > Q J PROPOSED LIMITS I - _ - - _ - _ - \ \ \ _ - - �- - _ = - R/W DIVERSION AND DIVERSION DIKE / / /' / ' x / \ DIVERSION DIKE OF DISTURBANCE (TYP.) _ - - _ - / - / _ _ _ _ = _ - - _` _ _ = - - m = it _ J ri \ ' - - - - / / /TO SMALL SEDIMENTTRAPPING DEVICE' p / / 1 / / x x 5zOy8 511 - - / J o IF r i -3 - v / / / / /' FOR CONSTRUCTION ENTRANCE / / / / ST3 L / / J y I $ / / �x x - / 0 -/ i O o 15.3% 1 = / \ - \ \ \ \ / 1 / / M / RIPRAP 6UTFALL 4 511 / ♦ ' / SAF / W M _ - / - / / / / W=/T', P=2' / / O �\ SAF 529.0 // \ \ \ \ ---- 3 I � / ' // // / ' / /'/ �'/ 5 52 wIOFx /� / /� � a E - / FLOW DIRECTION \ \ I / / - - / / / / / / / / / / z60 < x, JOY O / / //' / z DITCH ALONG / / \ ( ) / - -' - / / / / 10% - = O M / �' � O \ ARROW TYP. \ \ / / �� / / TS /' 4 i,. , P / / / O 3 DIVERSION DIKE TO ; \ \ - / - / / / \ \ \ \ \ \ T� - - - /i/ I / - _ - / / / / / i6D v TS - �/ / v BE LINED WITH / \ \ ° \ - \ / 1 3 1 / / _ TS / / JUTE \ - ( / _ \ \ \ i /// MU-- - //-_- / // / DC / j /// \\ Q N \ \ 13.30% MU / I PROPOSED FENCE \ \ \ \ / -I, I /' / / / / f / I o \\ _ ♦, / /^ / AROUND SEDIMENT \ \ \ \ \\ // 1 I C Q `Z 0 1 % / T BASIN \ \ \\ TS \ // I % l// /' / � - / // / /'//-' j U N CC a \ \ $ -RIPRAP OUTFALL `RIPRAP OUTFALL / /' - / / /' \ W O G \ \ RIPRAP 6UTFALL \ / / - - / / / _ Y o \ 'w/ WI R - / L=zo', W=6 `D=2' \ L=zo', W=6', D=2' z L=20 T W-6 T D-2 1� / / _ - - - - / / /- / IP' \ \ SUPPORTS - J , / 53 ( I 3 / / / \ - W 0 > \ x x x .. x x � x x r530 o xx xx \ \ \ x x 628 _ -- / / \ LL] E xx xx xx xx xxx x xxxxx x x \ \\ \\ yx x x x x 524 /� / x x x x > x x 522 i - / //-- _---- ,- i'X - \ ,,-'' �_'' =f��-\ z x Ul \ \ \ ARE TO SEDIMENT % x x % % r20 / ° 5 / - - - - - ' X- X s�oA , / / - - \ w xxxx xxx x x / ' _ \ x xx xx ACRES . x x .xxxxx % = x 5i6 518 = - /1 / / - - } \ / \ z - % x \ \ ✓xxx 1 \ - - / / X X- \ "_-' \ /' / / // Q Z x xxx s� _ w / W - F- LU 7 RWD TS x � �/ -- __ \ �-------, it � Z - \ PLEASE NOTE: SILT FENCE AND SAFETY FENCE TO _ ��' �' ' / \ \\ \ / I I / U) O o SIDEWALK TO BE x - _-'-- 5 FIROM THE RETAINING WALL. i 3- / :x�� - - \` \ \�\i�T l ;/ o 4 x - x x x x x x x x x x x x x x x x x x x x x x x xLU 12'X O'MIN. x - d _ \ -% / '� /�� i \\\\\r I I Q LU 7 'WIDE - - _ \ __-- 8x• _ // i /- - / /� WASH RACK .. x x TOP OF ./ _ --_ --- ' \ �n _____----- Cq _�- / t�i-_ r9 -. -- -- x/ \ - _ 15°RCP \ 'ii'_y-� LL �- - RIPRAP OUTFALL > x xj ` .� --- ---------- --- - ----" - - %L �', ��' / i /� = l l / I i II - _ R/W DIVERSION AND L=10', W=4', D=z x x xxx ' / _---- - - _ ------ _ / / / J i c ,� 0 DIVERSION DIKE �� R DR�VE \ C --- \ _ �- 1\l \ O 0 ---- TO SMALL SEDIMENT - W x-x X X-X-X-X-X- - _ _ - - -- \ BERKMA\- _ ,'_ ,' �� Lai" N TRAPPING DEVICE - ---- STATE ROUTE 1403 -- / '/ �/ / , \ \ \ I \ 1 \ \\ J1 �1 I I I O I------------ _ _ W FOR CONSTRUCTION- �_ X X - --- IP -VARIABLE ENTRANCE � � _----------�� ----------------- H � WIDT R _ \\ y / / / / > l 1 \ I ✓/✓ \ \ \ 1 1 \ \ / /--------------- --- - 1 - - - - - - - - - - / __TEMPORARY24"CMPPIPE� 15'RCP __--1- - - - - - - \ \,.-\ l \ 1 / \\\I \ \ `� w A _-__--� TOEXISTINGCURBINLET- / ------------------------1-------\ \ \ \ \\ \\\\ \ \\ \ I I I I I\\ I / /7 J -o- -/- - CLEANWATER BYPAS /-- _-------------- --------- - - - ---------- �__------ 98.3LFQa3.76%,11=53.3.70 ---- -------------------- - - - - - - - - - - - \-\\\\ \\ \\\\\\\\ \\ 1\ 1\ \I1\\J/�\ �/ \\ 1\ \i 11 \ a JOB NO. o \ I ---- -- -/ 1o=s1_----/_ - - - - 202196 __ �--�-_ - / l /// i'i ------ - - - - l / / / / f / / / SCALE 0 � - �__---_------------- -%� / / Imo'-- -------_- -�\ 1 � \ II ) /� // � ��//�///J/ I 1 I j I \\ \ I 1 II I =30 0 SHEET NO. 6 1 1 I GRAPHIC SCALE j EROSION CONTROL * NRGINIA EROSION & SEDIMENT CONTROL — HANDBOOK SPECIFICA77ON NUMBER Sediment Trap design #4 - 3 TH SA moo— SAFETY FENCE 301 I 1� Vol I ® ' ® \ ® ® ® \ ® Z ® ® ® ® i I I / OF� drainage area (acres) (< 3 al 0.11 I I ® ® M JII l trap wlumes: CREST OF STONE WEIR�p C \Illy CE CONSTRUCTION ENTRANCE J.02 elevation (ft) area (sf) wlume(cf) %olume(cy) GROUN0 \ / I / i_ _ C"1' y G. SC( R. LLINS'Z 524 36 0 0.0 O - ; 11, CR CR ROAD STABILIZATION 303 \ - - - - --------------- ---------` ------ -------- CONSTRUCTION' - - -` - - `- - -' - - - - / \ /i ` U No. 35791 526 204 217 8.0 \ - ` - rI{ DRY sroRa6E - vaeLSLc - -'- ---- - I !f 1 01/06/22 �4 528 500 899 33.3 r I i SF SILT FENCE J. 05 0 0 0 0.0 r \ 524 lP STORM DRAIN INLET PROTEC7ON 307 0 0 0 0.0 W(IXGA D)E 4' 1 \ \ \F41ER CLOTH GRIGIu�L \ — i GftOUNO \ Wet storage: .SEE PUTS 3.13-1 CM *GGREG*TE CIASS I PIPRAP ClP CULVERT IiERT INLET PROTECTION 3.08 / n wet storage required (cy) (67*DA) 7.4�_wow z DD �� TEMPORARY DIVERSION DIKE 3.09 bottom of stone weir (ft) 525.83 �' — J wet storage proNded at this eleNation (1 7.4 / \ \ \\ \\ / j o ® slope of wet storage sides 2:1 S20 \ \ \ _ /I - _ _ / / o TEMPORARY ROW DIVERSION 3.11 weir length (ft) (6xDA) 0.7 dry storage: bottom of trap elevation (ft) 524 ST SEDIMENT TRAP J. 13 dry storage required (cy) (67*DA) 7.4 bottom trap dimensions: 4'X9' \ / / / - - \ \ - _ - / / U) ¢ ° I) \ crest of stone weir 527.0 top of dam elevation (ft) 528 \ \\ \ _ - - — _ _ r /3 _ - _ / W 0 i SB O SEDIMENT BASIN J. 14 \ / \ dry storage proNAded at this elevation (1 7.4 top width of dam (ft) 6' / slope of dry storage sides 2:1 top trap dimensions 22X25' 8 - - \ — _ — — _ _ _ o Q 3 OP OUTLET PROTECTION J. 18 _ _ 5 in L,_ � W Qz = V 510TW/eO _ Q z RR RIPRAP 3.19 I \ \\ NOTE: MEASURES INTENDED TO TRAP-\ f J l / / 1 - \ N508gW"szz.ow _ Z > Z a s \ / /NOTE:SLOPES�CRfATERTHA 3:1ISHALLBE \ �- Z o p \ SEDIMENT SHALL BE CONSTRUCTE AS FIRST Y IP TS TS TEMPORARY SEEDING 3.31 (\ \ \ STEP WITH ANY LAND DISTURBANCE AC VITY PLANTED WITH NATIVE STEE SLOPE MIX WITH I _- , - a O �+ / ANNUAL RXEGRASSBYE STCCINSERVATION -- ___\ - ___---- \ \ AND SHALL BE MADE FUNCTIONAL BEFOR / / 509s8Tc IR VE c� o w r \ / SEEDS AT A RATE OF o CBS. PER ACRE, OR 1 LB y6 - - slossrc sovss6r MAR \_ -- C O UPSLOPE LAND DISTURBANCE Tggq EMPLACE ` - - _ / S - sus6rc 510.60EP \ _ g : RK 1 w Q Q 3 PS PS PERMANENT SEEDING 332 \ �ER1,000SF,UNLESS�SPECIFIED r,�THERWISE. d ____---- ---- Z = 7 RwD s13.6orc sizsser su s3EP _ STATE ROUTE 1403 � F Q — \ MU MU MULCHING 335 \ 1 \ / / / sla.rsEP _----------------- —------- — - _ P - 1 / / / ----- VARIABLE H / v szrEr iWIDTH _ - F, � I BLE WIDT R W 516.20EP to I \ 00 TP TREE PROTECTION 338 \ '-\ I \\�/ l _ / _ --- ------- - -- - - - - - - - -\ L Z > i ------ -------------------I- - - - � I — — — 0 F- DC OC DUST CONTROL 3.39 \ \ \ / / / - _------- 15' _ _ - \ U) o / IP ROSI��EDIMENT CONTROL PLAN PHASE I I I A = \ W o BM + + + + + SOIL STABILIZATON BLANKET 3.36 ( \ �( \ — _ / / / --' --------- / — - — — — — tn a l / \ ` GRAPHIC SCA E o 0 p 0 1s1/ 30 1 60 12� } I W _ WOppgURN LANE / v IN FEET ) / _ _ i / I I �� TE 6S9 _ — o NOTE: DRAINAGE DIVIDE SECTIONS GREATER - - / STATE ROU - - - / / 1 Inch - 30 ft. / J _,-.--"� l - - / - - THAN 2% IN SLOP SHALL BE TABILIZED WITH / ' °H -�-°" = _ / / _--x--*-Y _ _ _ W _ CONTRACTOR TRACTOR STAGING AREA W / U ^ `T^W2TEB VEYANC CHANNEL IN / -�°" ° �] - \ - - =" / _ - -�� N- IT FUELING TANK, DUMPSTER IP / NOTE: SILT FENCE, SAFETY o -" -WITH FUELI AGCO&DANCE-V THAa ESCH-STANDARD 317 - - _ _ —� - — - - - - = -� _- - °" °" _ _ - �w� i - - AND PORTA-POTTIES - / / FENCE AND TREE PROTECTION M 40 - -- II NM / -- I -- ------ -- — -- IP CA cli /_ _ _ - - _ - - / � SHALL BE INSTALLED AT LIMITS. o _ " / SF / OF DISTURBANCE. THSE A w N N_ N W w / FFSET FOR GRAPHICAL ¢ m N o E / w/ WIDE PURPOSES. DRAINAGE DIVIDES _ N T :C NTRA OR O SUPPORT o / \ • URE POSTIVE OR E LIMITS — _< IP M M ------------- M — - / RE MEASURED A / T TH DRAINAGEALONG DIVERSION DIKEE _- -- ---------- - D / I`p - / � ::: • .. .. ..: ::: ,. ._.. .•:\ �'.• - L9 0 �/ DRAINAGE DIVIDE( YT P.) / / T^ / AREA O SED MENT T / RUCTI ' N ENTRANCE SLI-L BE --- i NINSPROPOSED LIMITS OF o / 5 3 CONTRACTOR. ALL CONSTRUCTION TRAFFIC IN THIS WASH RAC N N PROPOSED FENCE AROUND / DISTURBANCE = 5.13 acres M Z 3 ---- __ --- \ / 12, % _ --- -ii I SEDIMENTTRAP w - a BAR ASH L UTI I E THI ONSTRUCTION ENTRAN E. / � / W Q ,! i -� ��- - Ire I � I I ✓ / / / / / / � 1 / , / C'O � Lill > ii w � �/ 6'WIDETOP �/ iOFDAM w it r / / / / / A / O Z TP — i CONCRETE WASH OUTAREA - S34•o _ - - - z o z Q o PROPOSED LIMITS S / / / / \ \ \ } i h / / / / / / / / ® ® _ _ / - -' > OF DISTURBANCE x 30 / i \ / / / / /® / - ® - / W Q 0_ o =5.13 acres F_ = - - - - f - - - \ \ - - r - H / / / / R/WbIVERSION AND DIVERSION DIKE - _ - - J o /TO SMALL SEDIMENT TRAPPING DEVICE - -` - � / / / / J J \ \ \ \ s ® FOR CONSTRUCTION ENTRANCE - O a v / r /-v / I /' I ��'� / SAF / /' > c 10 -- �� / /// o - - - - vvv SAF 528 I / I A A / °�/Os�� /� /�// /� Q \ \ \ \ RWD PROPOSED FENCE \ \ \ \ \ } I / i 10 so / / / / jL9\ \ AROUND SEDIMENT �' / / // /�, 3 I/ f I { ��1 // C / / - C BASIN \ - v _ A v /I J \ 526 ♦ ( / I - - 'po so U o \ ♦ - - AREATO SEDIMENT BASIN=3.14ACRE5 } � � � � m� � / ✓ / � � I \\ \\ ♦♦ /-/ /RIPRA�OUTFALL \ \ \ \ �� J • e \ - - - / / L-zo, W-6T D-2 TS \ \\ \\ %1 RIPRAP OUTFALL / P i / / / ` z \ \ SF \ \ \ SZ4 ♦♦� / / RIPRAP OUTFACE \-\ - \ L=zo'1 W=6'1 �_? / / I /IP; IP / \ j U NO i , i L-1o' W=6', D=z' \ \ _ / / / - - / / / - / IP \ / _ o x xx xx \ j / x x x 5 \ \ SUPPORTS \ Ip � - - J / / � x x ... \ x x x xxxxx < . x TS } � / I I _ - / / / / � \\ N '��/� ; �� E 3o x ; x I ° x x � :. _ x I AGE DIVIDE (TYP.- 2 xxxxx x \ xxxxxxx�xxxxxx xxxx 520 - I — =f0 / -- /' / / \ "-cP,, \ _ f�- —\ Z x >� $ $22 x x x /x xx xxxxx x x x _ / x x / �- x x x x x 1 - , X \ 0 %xx.x 5i6 51 \ \ IP - 3 XX / PEA j\, \ / /-1 -� z w -� xxxxxx xx - ' _ x xx _ Z x x xxx xxx x x. z I / - _ - � _ ", \ ,_ \ �� - z xx _ _ , PS � / x x / x \ xxx .xxx I" �z �/ _ - � ,_-� � \ 1 - X X ;� X �X/ � "''"� _ \'"'�� \ � �- - - _ / / G / / Z w � � z ;low i 26'x - PLEASE NOTE: SILT FENCE AND SAFETY FENCE TO ~ z z MIS �`" \ E INSTALLED AT BACK OF SIDEWALK TO BE w O o x \ 16— io �� —5' FROM THE RETAINING WALL. \x xxx x I su \ -fix= TOP OFDAM �lxx x xx. x x xxx x x xxxxxx xxx-- x x xx 9 xxxx - w x, _xxxx xxxxxxxx _ x I P as x x / \1z'x7o' MIN. CE l �x - - - - - .. x x - S x 'WIDE x - - __ _ _ _ _ _ -_ _ x x Q WASH RACK RI RAP OU I FALL ' �TOMOF x--x--x- NcA RCP \ �� / // / / % r_� r� W a _ xxx xxxxxx _ _ x xxxxx xxx .� o xxxx xx /- - L=1o' W= ' D=z' _ - \ ---C " - �- --- ----- 15 III � O R/W DIVERSION AND �/ ' --- -------- / / / _ DIVERSION DIKE pR�VE -- � __ \ ^_ �- � / � / � �, � � � o TO SMALL SEDIMENT - 5y6 BERKMAR E 1ao3 \— _ --- _ _ / — — K /* 1 \ I ------ - _x `�`` \\� I A 1 V A 1 �1 I I I STATE ROUTE ------ ----- �' / /: -x / r 1 \ \ / III r N U TRAPPING DEVICE - Rwo o - ------------- _ — " FOR CONSTRUCTION- O _---- - VARIABLE WIDTH ENTRANCE - --- n I -------- _/� ' / � / 9 \� _ --------- — I ---------------- _ _�_ — — — — — — \ \ ; / / _ — r I I r I I \ \ \ \ / I E AT THE TIME OF TEMPORARY SEDIMENT- _ ____------- _ � \ \ 1 \ \ D BASIN REMOVAL, THE CONTRACTOR I - — SHALL REMOVE THE TEMPORARY PIPE'- -- 15"RCP ------------ - - - -I- ------ \ �-"'\ �' \ \ 1 \ / I \ 1 / /\\ I \\\I \ \ I \ J I \ / w 1 a ---- / CONNECTION INTO PERMANENT STRUCTURE - - - - - - - - - - - - - - - - - \ \ \ \ \ \ \ I / S -- / _--_ _------- ------ ---- --------\ \ \ \ \ \ \ \ \ i 1 \ 1 \ /� / \ 1 II 1 \ a In &COMPLETETHEINSTALLATIONOFTHE -- -------------- - \ \ \ d o ---- PERMANENT STORM SEWER. -ate- ��- /------'----------------------- - \ \ \ \ \ \ \ I \ \ \ 1 ]OBNO. N o ——\� \ \) \ \ I I I ) I \ \ I I I I \ I I 202196 / CONTRACTOR SHALL PLUG HOLE IN. / _ _ - — - _ - - \ / ) / ----EXISTING CURB INLET WATERTIGHT. � ---/� // // ' __--------------- �\ 1 \ III \ /� // / /rr J/ / /// /l I I I I\\ \ 1 SCALE _id// / /� /� SHEET NO. _--— --7 ///////// 7 s F / / / / / / I \ \ \ \. ` �'X` \ \\ PROPOSED STORMWATER MANAGEMENT NARRATIVE FOR THE PROJECT: PRE -DEVELOPMENT SWM PLAN: / / / / / \ T \ \ \ \a„moo \\\ - TH OF / / \ ��r�' \ POST -DEVELOPMENT SWM PLAN: <g� ��\ / % SCALE 1 = o / / / / 1� I\ \ \ \ \ �o �.g� �� OVERVIEW: T` 1 \ �j°a�g�\ )1 5 % / 1 \ zlag- u„\ - \ SCALE i 5O TH E PROPOSED STORMWATER MANAG EM ENT PLAN COMPLIES WITH PART I I B v / /� /' �I v v° /�\/� / / / / 1 \ V A \ v� /''1 / / r / / /�� REQUIREMENTS TO MITIGATE IMPACTS FROM THE PROPOSED IMPROVEMENTS. TJ IE BORN QRY/FORHE 1 \ \ \ \�"� �\ ) j // �; / / / 1 I \/' O l I� n \ \ v ' '\ \ /i� \.`�� T E-BOU'NDXRY/FOR/HE 1 \ n \ \ \ \,�- �,9 s-' S`U B/�REA F SUMMARIES OF THIS COMPLIANCE CAN BE VIEWED IN THIS VSMP SETAND IN THE A \ \ \ \ � \ \\ \ \ 1 I// � /� A � \ ` \ \ \ �o / \\ , \ 1 // , - ACCOMPANYING STORMWATER MANAGEMENT CALCULATIONS PACKET. SC( R. LLINS PROPOSED k{MI� OF \� I ` \ \ \ � \ \\ � � � \ \\ �\' PROPOSED LIMIT/5 OF \/ I ` � \ \ � \ \\ � � �\' �r � 0.08 ac. O DI TUdB NCE 5.13 ac. �5 - 1 \ \ \ \ \ _ L 1 \ $ °> c CN=61 STORMWATER QUANTITY: U No. 35791 ,1, Q ," f' i 1 I \ \s \\ \ \\ \ \ \\ 11 \\ Y€ m DISQTUIRBjINCE 5.13 ac. -IS--1 1 ` \ \ \ \ \\ , I T _/ 1 0 7 /--/H _/ S°e- \ CURRENTLY ALL OF THE EXISTING IMPERVIOUS AND PERVIOUS AREAS WITHIN THE USLO T D FINE E \\ \ \ \ \ \ \\ \�\ \ LX1 t"i USED Tf77 D FINE E \ \ \ \ 5'a I' r ANALYSIS FOR PROJECT LIMITS EXITTHE PROPERTY UNTREATED AND SOMEAREAS EXITTHE ��o 01/06/ZZ e \ \ PROPERTY UNCAPTURED. THE PROPOSED PLAN WILL CHANGE THIS AND WILL BOUNDARY FOR, HE VRRJN 1 I \ \ \ \ \\ \ \ \ BOUNDARY F R HE VRRRM, \ - y SUBAREAFALONG CAPTURETHE MAJORITY OF THE PROPOSED IMPROVEMENTS. THE CAPTURE AND �5S gT1G1 WATER QUALITY- \ I\I I �� \ \\ \ \ �� / 1 1 �� y@DOWNSTREAM EDGE - ` ZONAL \ \\\\\ \\ \ \\ \ •�i"� I WATPA QUALITY \ \I \ � � \ ,' i \\ \ \ Y DETENTION OF THE MAJORITY OF THESE IMPROVEMENTS ISREPRESENTED BY / - 22 \ \ OF DRAINAGE AFjEA POST -DEVELOPMENT SUBAREA A, WHERE AN UNDERGROUND DETENTION SYSTEM AID/CULATiON,�, TYP. \\I \ �S B/A EP F \\ \ \ \ \!�\\\\ / \\ \ \\\\ AID/CULATION,S, TYP. I\ -- ®® �11 \\\\ \ ATTENUATES THE RUNOFF. CHANNEL PROTECTION IS MET VIA 9VAC25-870-66 SHETFCOW'QOV�ANS EAM`OF \ \ \. \ \ \\\\ \ \ \\ \ \ \\ \� ��. \ v - / / / / / / ' - _ _ \\\ I. J\ \\ \ \ \ \\ \� �' SECTION B.3.A. FLOOD PROTECTION IS MET VIA 9VAC25-870-66 SECTION C.2.6. LIMITS OF\ANAI�SI'S� \ •\\ \ \\\ \\ \ \\\\\ II i I / / S - �l 06 \\ \\ \`\\\\ 1 t / SUBAREAS D,E,F& H REPRESENT DRAINAGE AREAS THAT SHEETFLOW OFFSITE TO U\45 C. \�\ \\ \\ \ I �\ ' / / / pg \\ M II -- I �` EXISTING STORM SEWER INLETS ALONG BERKMAR DRIVE. THE VOLUMES FROM I \ \\.Cq,,a \ \ \ \ \ \ \ / `\ \\ \\ 1 y� O ` "' / / / �G 1 ' mo'- _--�' \\ \\ 1 y� O L = THESE AREAS ARE ANALYZED TO MAKE SURE AN INCREASE IN VOLUME DOES NOT \\ C Ju\ \\ ' \ \ \ 1 \ \ \\\ \ \ (\� \`I / / / / / /- \I+\I+ \ -_-- --;- '��.'`� \ (� \`} V / IMPACT DOWNSTREAM AREAS VIA 9VAC25-870 66 SECTION D. SUBAREA H IS \) / / - _ `\'I \ \ / NEW ONSITE DRAINAGE AREA CREATED BY THE ENTRANCE TO THIS \a / \ \ \� / DEVELOPMENT AND AS SUCH STORM SEWER COMPUTATIONS OF THE EXISTING 5o' F OLLF wlYl EL V. \ \ \ / \ \ \\�\I \ ' / / ' ' Y "r ` / \I. 1 �\ \ / PIPE RUNS EX4 TO EXI. ARE PROVIDED TO SHOW THAT THE 10 YEAR STORM IS t I �r OF CONC. FLOW\v/A ELEV:5rj,' \ \\\ \ II \ \ / / / -� 1 \ o,„ °' I - .Fzz "�, 1 \ \ 1\ \ \ /�'- CONTAINED WITHIN THEEXISTINGUNDERGROUNDSTORMSEWERSYSTEM. E \ , �', \\ \\ \ \I SHOWN IN THE CALCULATIONS PACKET, AT STRUCTURE EXl, THE CUMULATIVE F Q \ \ \ / I ro \ \ 1 - \. -- / - �24 1' p \o\ , ` \ 1 - -�- VOLUME OF SHEETFLOW IN THE PROPOSED CONDITION IS LESS THAN THE Z > \ \ \ \/- \ \ \ \\\ \\\ \I-' / I I ,\. ' \ J ,� \\ i `, `�\ \ 1 \ _ / _ CUMULATIVE VOLUME OF SHEETFLOW SHEETS IN THE EXISTING CONDITION, RE THE Lu \ ANALYSIS ENDS. PLEASE SEE SHEETS 12 & 13 FOR FULL DRAINAGE AREA g a 1• a \ >, \ J / \ I - J" _ _ _ 4 �" \ \ \ \ \\ \\\\ / "` DELINEATION TO THESE INLETS. O a y v I vV A I IT SHOULD BE NOTED SUBAREA J IN THE EXISTING CONDITION IS RUNOFF u- Z / � / �/ � 5 -. _ _ - •• ,. �,. � , vv AA \�. � CAPTURED ALONG WOODBURN DRIVE AND ROUTED TO THE SITE VIA A 15" CMP � tL Z SUBAREA E _ A V V v CULVERT. THE PROPOSED PLAN CAPTURES THIS DRAINAGE AND ROUTES IT _ ' / i-- - _ --- 1� --`� 1 ' \V A \ �- THROUGH THE SITE. AS THIS IS OFFSITE AND UNDISTURBED AREA, THE Z > Z CL g EETFtH TV O DOWNSTREAM iA- oo ?�' \ O O O V \ v A \ \ auev 1; 1 1 V A \ IMPROVEMENT FACTOR FOR CHANNEL PROTECTION DOES NOT APPLY TO THIS O # INLET OUTSIDE LOD) _ \ ccess E,MT1- v v `v \\ 1� AREA. THIS AREA IS ADDED TO BOTH THE EXISTING AND PROPOSED ONSITE a a U _ _ / V 'VA o \ SUBA E \ \ V A A AV A A ` 1 ' 1A VAV 0.98 aC. ------__ _ _ - /- V I \\ o - 19 - - 1� �ir,I �; 1 'v\A VA\ 10-YEAR FLOWS FOR THE PURPOSES OF FLOOD PROTECTION. SEE SHEET 13 FOR Q 0 Z \ \ \ \ _ 53 \31 PRIV I / „ - \ % \. \ \ \ \ \\\ nb € 1 , \ \\\ SUBAREA E FULL DRAINAGE AREA DELINEATION. U w Z w - - \\ 0 39 �C: \ \/ \ s\ \ A- \ \ . - CN -59 - afro \ a \ . - - - - �"'� "' a_ a � - \ \ \ ,p °,p\ \ }� \C \\ \ \�. --' -,$� \ q - _ --- 7,'-\ \\ \ Lu O.i9 ac. PLEASE SEE THE ATTACHED STORMWATER MANAGEMENT CALCULATIONS PACKET O ~ Z �-� \ \ \\ \ \ \ �`S - \ 20 18 _ - \ �� \ I\ \ \ \ \ / ��'� '1 \ 0 17 1 CN=61 FOR ADDITIONAL DETAILS PERTAINING TO THE STORMWATER QUANTITY H ZO - Or � \ I T 13 \ \ \\ \ �. \ V A 1 V A - A \ - - A\- VA A V LIMITS OF COMPLIANCE. a g Q AVA V A \ V `, \A \\ \ �ay4 IV A .I,I ' \ \ A ANALYSIS FOR SUBAREA E ALONG > un f _ _ 1 A�A\ \\\, STORMWATER QUALITY: W > w U) / ,SUBAREA G \VIZ \ \\ \\ \\ \� \� \V AV AV \V A \ V�A 1 VA \\ _ A a - I \ _ - - - THE STORMWATER QUALITY REQUIREMENTS FOR THIS DEVELOPMENT ARE MET W Z > \ _ / A I, ° -_ _ _ A V m , DOWNSTREAM EDGE / / (DRAINAGE REA TO .� I A V \ \ --. II �,� - V' A A \ .. I i AAI\ OF DRAINAGE AREA THROUGH THE BEST MANAGEMENT PRACTICE OF PURCHASING NUTRIENT 0 O \ \ \ \ \ \ \ \ \ \ REQUIREDATHIE DEVELOPER WINIMUM OLLOPURCHAUS SE NUTRIENVAL RATE OT CREDITSF 5.56 /PRIOR TO THE p Z DO 1GSTREAM ROAD DITCH) 0 11 \ \ \ \.\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ o Q o 11 \ \ \ \ \ a,^_ R \ I - v `, \ \ V A V A \ \V V A \\� I 'v A V�\ / LIMITS OF / a; 4 V` r _ "\ A '��', A VV�\ / LIMITS OF ISSUANCE OF A LAND DISTURBANCE PERMIT. O �16 ac. 4� na % �\ ANALYSIS FOR o o" - _- I ®� ��_ \ ' ANALYSIS FOR a U) 1 �.- \ I, %\ \ \ -� F \ _ 'O"+z :'\ \ i PLEASE SEE THE ATTACHED CALCULATIONS PACKET AND THIS SHEET FOR > CN-80 I, \\ \ \ \ \\\\ \ \\ III II 1 1\ \ \ \ `J" DrFVELOP ENT J / / // / \ U ARF�A A, / w - - v 1 I \ v ADDITIONAL DETAILS. W \ I / I o Tc=O ]O hrS. -°-' II 1 A A \ V A '' \ / AMENDMENT: 1 I \ \ \ \ \ \ I 1 1 h � I I POfE/6'N OF S�-IEETFLOW - ` \\\ PROPOSED IMPERVIOUS AREA WITHIN THE LOD ARE REDUCED WITH THE \ T =1io Yyrs I A - _ ( 1 :� o" = LAYOUT PROPOSED WITH THIS AMENDMENT. CN IS UNCHANGED FOR SUBARE \ 25 4OLF �/A �L V - .5 \ / I I �. IS INCLUDED IN \\ �' _ _ - I )' o r �I ,- \ LIMIT OF 'A' SO APPROVED ROUTINGS REMAIN ADEQUATE. I A V A \�26�FCON . L w / �L �._��' IvI SUBAREA E DRAINAGE __ I �/ A ANALYSIS FOR F I AREA Tc=o.io hrs. \ J 1 / / SUBAREAS H & D y, I !` , � \ 2oa OF OLF w/G ELEV.-o.5 I i I __ n / \ U A EH I I 1 1 \ I I \ \ � l ' \ \� ' % - \ • \ \ � \ ' \ \\ i6i OF CONC. FLOW W/A ELEV.-2' I' �' _ --- I I / \ \ \ \ \ � _ � � APPROVED: \ / �/ \ \ \ \\ _ _ - 888' CHANNEL FLOW IN PIPES Qa 6.35ft/s-o o ( / / 1 \ \\ �\ Post -Development Impervious Area Summary I I , qua I I'' SUB R AA _ I//\--- J B \ \ V A A v -_-_ _ �,� v _-- - \ \ r I I \ =faro \ LOD Water Quality N N n=gg /� TC�Oau hr66 I \ \ \ \ \� P / / / \ - _ 5�� I l /� \ \ \ _ - N N N �Si r' ' \ \ \ \� \ _ - 4.52 dC. 4� \ \ - Building 59'. sf " g ¢ N o Sidewalks &Concrete 12,(1110 2 090 sf o - - - = Parking Areas/Road 64,100 sf oa 1\ \ III- o V o J II Iv _ --_ 355 PROPOSED AMENDMENT: M-Development Impervious Area Summary\ Post L5 LOD, Water Quality 0 �_ \ - _ Building 59,290 sf lio Sidewalks & Concrete 12,723 sf \ li 5U REAL D\ \ 1 \ \ \ \ oc e 3 III / - \ \ \ J, J Las III / \ Parkin Areas/Road 63,272 sf (SHEETFL WTODO C)1 cc5u I A g INLET) OU SIDE LQ� �� ) 1 I I v o" I I v 135,285 sf \ I I I 1 l\ ate, I \ �- � \ \ !I' i J fi � ate, III \ / l� ) II �w� II v I ; \ \ �/ /0.65 ac. 111r 11 \� �N� I \ \ \\ \_ ) is �G \ CN 60 IIIII w IIIII A v I S" /--I IIIII A I �I m I I I V v v V A ��. _ r I} 1' m APPROVED: SUBAREA D \ 11 IIIII � \ 1 \II g^ i \ Post -Development Impervious Area Summary d I 1 i v � / 1 1 I � I II v �� p p v 7 \ � I I / Subarea A, Water Quantity I I 1-N=65 / Building/Structure 59,380 sf Sidewalks/Concrete 10,890 sf - � mzz I ' III / Roads/Driveways 61100 sf I � � / / o o� s � I / 131,370sf / / I I �,_ / _ ,gam o / .O� / / J I I �. \ c ! r, s�•.n � o :•. ...,3.. I \ p � / I � I � /.� �-� �'i I I 11 I 1 1 0 PROPOSED AMENDMENT: \ I \ SUBAREAA / A / / h 11 r / IIII 111 ✓ " Post -Development Impervious Area Summary /`fc=O.l hrs' �® �/ Subarea A, Water Quantity 1 gm 1 / - / / / / / Building/Structure 59,290 sf / 'I A / Sidewalks/Concrete 11,361 sf / / I z / m �® �; Roads/Driveways 59,834 sf /- SUg3ECT �II I 1 II I\ II ( I ! ,/ /� /� SUB3ECT �II F\ / - I --�'i /I '---� // 130,485sf / PROPE T�f; - \ \ ) \ I� slat _ __ PROPER- _ I 1 - .--- ,I r / / A (\ ) / ) 2fi OFO Fw/A ELEV_-o Sow A v I / hV / TYP. �� - / �l� I I \ \s 'Q I \ \ EX I I \-- / I I o _ \ �, EX \-- \�494�COhiC. FL wTAi ELEV. �xF\ \ a� 5\, / I I J \ _ - / _ \ / ,�t M } ��, - - SUBAREA 0.16 ac. / \ \ \ , \ \ \ \ I �� I °'I 1 � _Sy4�. FS ♦ y I 1 I I �I I I I I I , l l------'�� ♦ I �------ ♦ I�I V I I I / / // / I I : I I 11 /--//i ♦ I� '� o ♦ I- V 1 V I I / / / / 1/ I I I I 1 S ♦ ofio olow SUBAR€A-�O EXISTING I I I 1 I / I / / / / / I I I i I I I ( I/ ` SUBAREA-�O EXISTING -- I� CULVERT = 1.22-AC �; \ 1= \ I I I I I CULVERT=1.21-AC ♦ I l ` v TLUT II l \ / / T� t� I I 1 A �, \ j y / t�I I I \ CND � � � \ I I � � `� � " / / " ' � � � \' � �I I 1 I II I \ CND . ?�� \ I I \ '�, '� � � � ,:, h " / / " � 8 / �,°I ,1I I I I II I I /T'c=iz.6 M11� \ ♦� III �\ ` / I / / '� r 1 III 1 1 I 1 TC=12.6 MTN II li I / / o r / Tc=o.22 hrs. 11 I:I // / ♦ \ / / / / / / a/ \ \ �I 1 I T 1 1 / Tc=0.22 hrs. 54'OF-OLF w/A ELEV.=i \ IIII \ / / \\'� I ,\ II I I I I / 54'OF-OL\wIAELEV.=i \ ♦ 1 IU \ �:'a". / / // / / / / / / «° .'�\ 6 o'OFCONFF OWWI� ♦• iy • ) gg�/ I I / / / / / / / / , i 1 I 69o'OFCONC-F OWW/A ♦ I 6 _ ) �o a� / / / / ,/ Post -Development Impervious Area Summary I! ELEV.=2 \ \ / / I (' . \ g \ / y / / / / / / / '� /��: s^a� \ 1 I 111 ELEV.=2g' \ \ Post -Development Im ervious Area Summar ' I1 j ) n p p Y SubareaH Water Quantity \\ ♦# \\ I // / II I / // /// / / \ I \ \ / \ e 1 11 \ \ \ I Subarea A, Water Quantit � / / / \ I o 1 \ � I I � Y I Building 0]Ssfff' I1\\\Building 59,380 sf Parkin Areas/Roads 2 805Pre-Develo ment Im ervious Area Summa gP P fY I �f l\ / / / / l \ \ \ � I ' \ \ \ I Parking Areas/Roads 10,890 sf \-l/iA A Sidewalks&Concrete 560-,�j�•.I, Subarea A, Water Quantity Sidewalks & Concrete 61,100 sf 3,365 sf Building/Structure 0 sf Pre -Development Impervious Area Summary Pre -Development Impervious Area Summary 131,370 sf Sidewalks/Concrete 1,700 sf Subarea D, Water Quantity LOD, Water Quality SubareaJ, Water Quantity Subarea D, Water Quantity Roads/Driveways 5,500 sf Building/Structure 0 sf Building/Structure 0 Isssff Building 0 sf Building/Structure 0 sf g 7,200 sf Sidewalks/Concrete 1,100 sf Sidewalks/Concrete 0 sf Sidewalks/Concrete Parking Areas/Roads 300 sf Subarea B, Water Quantity Roads/Driveways 0 sf Roads/Driveways 9,800 sf Roads/Driveways 9,100 Sidewalks &Concrete 910 sf Building/Structure 0 sf 1,100 sf 9,800 sf 9,100 sf 1,210 sf Sidewalks/Concrete 0 sf Subarea E, Water Quantity CHANNEL& FLOOD PROTECTION SUMMARY Roads/Driveways 2,360 sf Building/Structure 0 sf 2,360 sf Sidewalks/Concrete 0 sf GRAPHIC SCALE Subarea G, Water Quantity Roads/Driveways 1,000 sf Building 0 sf 1,000 sf so o zs so 00 00 Parking Areas/Roads 3,420 sf Sidewalks &Concrete 0 sf 3,420 sf ( IN FEET ) 1 inch = 50 ft. Pre-Dev. Post-Dev. Method of 9VAC25-870-66 Method of 9VAC25-870-66 Method of 9VAC25-870-66 Subarea Subarea Channel Protection Compliance Limits of Analysis for Channel Protection Flood Protection Compliance General Construction notes for Stormwater Management Plans i. All dams and constructed fill to be within 95%of maximum dry density and 2%of optimum moisture content. All fill material to be approved by a geotechnical engineer. A geotechnical engineer is to be present during construction of dams. 2. Pipe and riserjoints are to be watertight within stormwater Management facilities. 3. For temporary sediment traps or basins which are to be converted to permanent stormwater management facilities; conversion is not to take place until the site is stabilized, and permission has been obtained from the erosion control inspector. Method of 9VAC25-870-66 Limits of Analysis for Flood Protection A, B. C, G A Section B.3.a (Energy Balance) N/A (Energy Balance Satisified) Section C.2.b (10-yr. Post Flow < Pre Flow) N/A (10-yr. Post Flow < Pre Flow Satisified) D, E, F D, E, F Section D (Sheetflow) N/A (No Increase in Volumes) Section D (Sheetflow) N/A (No Increase in Volumes) H Section D (Sheetflow) N/A (Flow is captured in Concrete Pipe) Section D (Sheetflow) Pipe Runs EX2to EX1 (10yr contained within Pipe) W W T� 6) ti M z co 6) W N co N W N z N Q Q Q z J ^ i J W w M Lu O ��I�`J O Z O z < N 2 U NO � Y W 5 � r WLU = (n L U i- I L z Q O o N U_ H- Lu I w O w a to JOB NO. 202196 SCALE 111=Sol SHEET NO. 8 FACILITY INSPECTIONS DURING CONSTRUCTION: CONSTRUCTION INSPECTIONS ARE CRITICAL TO ENSURE THE UNDERGROUND DETENTION SYSTEM IS PROPERLY BUILT. BECAUSE THE TIMING OF THE INSTALLATION IS DICTATED BY THE CONTRACTOR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING THE ENGINEER, COUNTY INSPECTOR AND CONTECH REPRESENTATIVE PRIOR TO INSTALLATION. CONTECH, OR AN EQUIVALENT PIPE MANUFACTURER, SHALL BE CONTACTED WELL AHEAD OF THE CONSTRUCTION START DATE TO ENSURE ADEQUATE LEAD TIME FOR MATERIALS AND DELIVERY. MULTIPLE SITE VISITS AND INSPECTIONS ARE REQUIRED TO BE SCHEDULED BY THE CONTRACTOR, WITH THE ENGINEER, COUNTY INSPECTOR & PIPE MANUFACTURER, DURING THE FOLLOWING STAGES OF THE UNDERGROUND DETENTION SYSTEM CONSTRUCTION PROCESS: i. PRE -CONSTRUCTION MEETING 2. INITIAL SITE PREPARATION (INCLUDING INSTALLATION OF PROJECT E&S CONTROLS) 3. EXCAVATION/GRADING (E.G., INTERIM/FINAL ELEVATIONS). 4. WHEN THE DETENTION PIPE SUBGRADE IS READY FOR PIPE CONSTRUCTION, BUT BEFORE STONE BEDDING IS INSTALLED. 5. AFTER STONE BEDDING IS PLACED AND COMPACTED, BUT PRIOR TO PIPE INSTALLATION. 6. AT THE TIME OF THE PIPE INSTALLATION. 7. AFTER PIPE INSTALLATION, BUT PRIOR TO PLACING FILL OVER THE SYSTEM. 8. FINAL INSPECTION (DEVELOPA PUNCH LIST FOR FACILITY ACCEPTANCE) PLEASE ALSO SEE BELOW, UNDER FACILITY MAINTENANCE, FOR REQUIRED INSPECTIONS AFTER INSTALLATION IS COMPLETE. FACILITY INSPECTIONS & MAINTENANCE AFTER CONSTRUCTION: THE FOLLOWING MAINTENANCE TASKS SHALL BE PERFORMED BY THE CONTRACTOR IN THE FIRST YEAR FOLLOWING THE INSTALLATION OF THE UNDERGROUND DETENTION SYSTEM. i. FOR THE FIRST YEAR FOLLOWING CONSTRUCTION, THE SITE SHALL BE INSPECTED BY THE CONTRACTOR QUARTERLY AND AFTER STORM EVENTS THAT EXCEED 1/2 INCH OF RAINFALL. 2. THE CONTRACTOR SHALL LOOK FOR BARE OR ERODING AREAS IN THE CONTRIBUTING DRAINAGE AREA AND AROUND THE UNDERGROUND DETENTION SYSTEM AND MAKE SURE THEY ARE IMMEDIATELY STABILIZED. CONTRACTOR SHALL SPOT RESEED AS NECESSARY AND ENSURE ADEQUATE SITE COVERAGE IS PROVIDED WITHIN THE FIRST YEAR. AT THE QUARTERLY INSPECTIONS, AND AFTER EACH RAINFALL EVENT IN EXCESS OF z", THE CONTRACTOR SHALL PERFORM THE ANNUAL MAINTENANCE TASKS DESCRIBED BELOW IN #3. AFTER THE FIRST YEAR THE OWNER SHALL PERFORM FOLLOW-UP INSPECTIONS ANNUALLY, AND AFTER EACH SIGNIFICANT RAINFALL EVENT: 3. A SPRING MAINTENANCE INSPECTION AND CLEANUP SHALL BE CONDUCTED ANNUALLY. THE MAINTENANCE PROGRAM FOR THE UNDERGROUND DETENTION SYSTEM SHALL INCLUDE CLEANING IT ANNUALLY OF TRASH, DEBRIS & SEDIMENT AND ENSURING THE INTEGRITY OF THE WEIR PLATE, TRASH RACK AND OUTFALL & INFLOW PIPES. THE OWNER SHALL ENSURE THE SYSTEM IS OPERATING AS INTENDED AND IS NOT CLOGGED OR DAMAGED. THE OWNER SHALL IMMEDIATELY CLEAN & REPAIR THE FACILITY AS NECESSARY AND SHALL PAY SPECIAL ATTENTION TO THE INLET AND OUTLET LOCATIONS. THE ACCESS MANHOLES SHALL BE USED FOR INSPECTION AND MAINTENANCE. STR:i ' DOGHOI INV V OUT: 49( CONTI VER 540 UNDERGROUND DETENTION SYSTEM GENERAL NOTES: 1. TRASHRACKS SHALL BE INSTALLED ON ALL ORIFICES, INCLUDING THOSE LOCATED ALONG THE WEIR PLATE WITHIN THE UNDERGROUND DETENTION SYSTEM IN ACCORDANCE w THE DETAIL SHOWN ON ON THIS SHEET (OR EQUIVALENT). / 2. DETENTION SYSTEM's WEIR PLATE TO BE PRE -MANUFACTURED AND DELIVERED TO THE SITE. WEIR PLATE SHALL BE SECURELY AFFIXED TO THE INSIDE WALLS OF THE MANHOLE STRUCTURE. 3. PRIVATE DESOTO COURT LOCATED WITHIN THE SWIM EASEMENT, SHALL SERVE AS ACCESS TO THE PROPOSED UNDERGROUND DETENTION SYSTEM. 4. CONTACT COLLINS ENGINEERING (434.293.3719) REGARDING ANY QUESTIONS CONCERNING THE UNDERGROUND DETENTION SYSTEM. 5. ALL FILL EMBANKMENT MATERIAL SHALL CONSIST PREDOMINANTLY OF SOIL AND BE PLACED IN SUCCESSIVE UNIFORM LAYERS NOT MORE THAN 8 INCHES IN THICKNESS BEFORE COMPACTION OVER THE ENTIRE AREA IN ACCORDANCE WITH CURRENT VDOT ROAD AND BRIDGE SPECIFICATIONS, OR THE FILL EMBANKMENT MATERIAL SHALL MEET THE PIPE MANUFACTURER's SPECIFICATIONS OUTLINED BELOW (WHICHEVER IS MORE STRINGENT). 6. ALL FILL SHALL BE PLACED AT 95% COMPACTION AND TESTED BY A GEOTECHNICAL ENGINEER TO ENSURE COMPACTION IS REACHED AND MAINTAINED, OR THE FILL SHALL MEET THE PIPE MANUFACTURER's SPECIFICATIONS OUTLINED BELOW (WHICHEVER IS MORE STRINGENT). 7. VDOT STD. IS-1 & ST-1 ARE REQUIRED ON ALL PROPOSED PUBLIC STRUCTURES AND THE UNDERGROUND DETENTION SYSTEM's JUNCTIONS. 8. PRIOR TO CONSTRUCTION THE CONTRACTOR SHALL TEST -DIG AT THE EXISTING INLET & OUTFALL TO CONFIRM THE INVERTS AND TO ENSURE THE PROPOSED GRADES CAN BE ACHIEVED. CONTRACTOR SHALL CONTACT COLLINS ENGINEERING OF ANY DISCREPANCIES IN THE HORIZONTAL OR VERTICAL ALIGNMENT PRIOR TO ORDERING AND CONSTRUCTION. 9. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR CONSTRUCTION INDUSTRY (29 CFR PART 1926). 10.PENDING PRIOR APPROVAL BY COLLINS ENGINEERING, THE DRAINAGE PIPE MATERIALS MAY BE SUBSTITUTED. ALL DRAINAGE PIPE INSTALLATION PRACTICES SHALL BE IN ACCORDANCE WITH CURRENT VDOT STANDARDS AND REQUIREMENTS. CONTRACTOR SHALL ENSURE MINIMUM COVER REQUIREMENTS ARE MET WITH ANY PIPE SUBSTITUTION. STORM SEWER NETWORK POINT DOWNSTREAM STRUCTURE INVERT ELEVATIONS LENGTH SLOPE SIZE PIPE MATERIAL RIM ELEVATION UPPER LOWER FEET % INCHES UGD 4 510.50 510.38 19.76 0.60% 18 HDPE - 4 3 510.28 509.56 120.76 0.60% 18 HDPE 524.34 3 2 1 509.46 1 501.86 95.70 7.94% 18 HDPE 514.00 2 1 1 499.15 1 495.50 45.56 8.00% 18 HDPE 505.36 540 STR:4 VDOT STD. MH TP=52434 INV IN: 510.32 TO UGD INV IN: 513.5o TO 5 535 INV OUT: 510.22. TO 3 535 PROPOSED GRADE (TYP.) SAFETY SLAB SL-1 REQUIRED INLET SHAPING IS-1 REQUIRED STR:3 VDOT STD. MH TP=514.10 PROPOSED ACCESS MH INV IN: 5og.00 TO 4 HWI STAIRS FOR INSPECTION 530 INV OUT: 5o8.90 TO 2 SAFETY SLAB SL-1 REQUIRED 11& MAINTENANCE 530 BE PLACED ATSEE 5%COMPACTION (TYP. TEST PIT OTE THIS SHEET rFILLTO 525 525 rl I / __ 5•STR:2 VDOT STD. MH iz z / 520 TP=SoS 7o LL n K o-E- ao K INV IN: 501.86 TO 3 O o LU INV OUT: 499.15T01 ZO -H F- / F? 3 / / 515 0 LU/ wsE=5 5. V P K 5 n 7515 x0 ¢ / / EXI 3TING GRADE W (TYP.) ✓DOT STD. MH a X / WEIR PLATE TP=500.50 ¢ w / INVERT=5io.50 JSE MANHOLE / 510 N: 496.4o TO 2 ,.I (EX 18" RCP) / 1g" HDPE / 120.76 LF C 1.019/0 / 18" HDPE 505 / 3.7' 19.76 LF dal o.gi% PROPOSED LOWER 3.8" 505 UNDERGROUND DETENTION 6 i, SYSTEM PRIMARY OUTFALL Soo / � 500 18" HDPE PROPOSED 12o" HDPE UNDERGROUND DETENTION !ACTOR TO 95 7o LF Qa 7.36% o%TO ATTENUATE RUNOFF CAUSED SYSTEM @ o. 5 IFY INVERT FROM THIS DEVELOPMENT. DF EX. PIPE TOTAL HDPE LENGTH=367.00' 495 �� 495 18" HDPE 41.68 LF Qa 6.6o% 490 490 O o It 0l a) It m Vl ri r V1 V1 a 1011 L0 l1 Ln l!1 /1 10+00 10+50 11+00 11+50 12+00 12+50 13+00 13+50 14+00 UNDERGROUND DETENTION SYSTEM PROFILE PLEASE SEE SWM CALULATIONS PACKET FOR STORM DRAIN COMPUTATIONS FROM THE UGD SYSTEM TO THE OUTFALL AS WELL AS THE ANALYSIS OF THE EXISTING STORM DRAIN SYSTEM PROFILE SCALES i"=5' (VERTICAL) 1"=50' (HORIZONTAL) 535 STR:5 VDOT STD. MH TP=527.02 INV IN: 517.18TO UGD INV OUT: 514.o8 TO 4 SAFETY SLAB SL-1 REQUIRED 1 530 1 FILL TO BE PLACED AT 95% COMPACTION (TYP.) 25 STR:4 VDOT STD. MH TP=52434 INV IN: 530.32 TO INV IN: S23.So TO 5 INV OUT: 510.22 TO 3 SAFETY SLAB SL-i REQUIRED INLET SHAPING IS-1 REQUIRED 53-5 15" HDPE 30.07 LF Qa 5.79% 510 505 e_ -----L---_t_L---___-+-_-_-----t---- I_--__--_-_-----t-------_-+_�__�__---_-t--_-�_-_---- ------- �I I � I \ I I I I I I I I I I I I I \ I I I I I I I I I I I I gJIII I I I I I LOT _ 35 PROPOSED ELEVATED 015" PIPE ALLOWS -- U) LO (N G \ I� I - I ALL PIPE CONNECTIONS TO THE UGD MORE SIGNIFICANT &LESS FREQUENT \1UNIT I I / SYSTEM SHALL BE WATER TIGHT \ STORM EVENTS TO SAFELY BYPASS THE / j 24 U NITS UNDERGROUND DETENTION SYSTEM - PROPOSED ACCESS MH W/ STAIRS FOR - INSPECTION & MAINTENANCE, TYP. PR VA E SIDEWALK TO ACCESS MH TO BE LOCATED UPSTREAM & _ SERVE AS ACCESS TO SWM- "• DOWNSTREAM FROM RESTRICTIVE WEIR . '. _ FACILITY,;.. �.' ;' - • • •� ;�;- . - _,-,�-•-'- PLATE AND AT THE MIDPOINTS & HIGH . . . - _ -- - r • e • t ' POINTS OF THE SYSTEM, AS SHOWN. - `1Q5'•57oe 1� Q•5�7. Q 4 .� �_ . �®SELF . . �120'` IdJV. • ti� . . e . . . . . . . . . . . - . . . . 4 0 e PROPOSED LOWER 018' � . UNDERGROUND DETENTION - _ • r . . % _ „� „�,-s �--°-- SYSTEM PRIMARY OUTFALL -'CONTRACTOR SHALL CALL THE COUNTY INSPECTOR & c RESTRICTIVE STEEL WEIR PLATE, AT ENGINEERING DEPARTMENT24-HOURS BEFORE ANY-LOwPowr,TODRAIN THE SYSTEM. ANTICIPATED CONSTRUCTION ACTIVITIES FOR THE SEE DETAIL ONTHIssHEEr. v - BMPs. THIS IS INCLUSIVE OF WHEN THE _ - UNDERGROUND DETENTION SYSTEM SUBGRADE IS _ - - READY FOR PIPE CONSTRUCTION, BUT BEFORE STONE _ - - -- - - 510.99TC 509.55EP - : BEDDING IS INSTALLED. 1.511.86TC 510.60EP UNDERGROUND DETENTION DETAIL: SCALE 1"=20' 513.60TC- v / -i . i /� c1A IrFP 513.94EP --- 513.27EP - - - 535 OSEDOSED GRADE 530 GRADE (TYP.) 525 PROPOSED ELEVATED 15" PIPE ALLOWS MORE SIGNIFICANT & LESS FREQUENT STORM EVENTS TO SAFELY BYPASS THE UNDERGROUND DETENTION SYSTEM i5" HDPE 25.96 LF Qa 7.01% 51 5 510 PROPOSED 120" HDPE UNDERGROUND DETENTION SYSTEM Qa o.5o%TO ATTENUATE RUNOFF CAUSED FROM THIS DEVELOPMENT. TOTAL HDPE LENGTH=367.00' SOS 10+00 10+50 11+00 EMERGENCY BYPASS PROFILE NOTE: PROPOSED STORM SEWER SHOWN IS HDPE, A VDOT APPROVED MATERIAL ALTERNATIVE TO CLASS III RCP. THE CONTRACTOR MAY SELECT A VDOT APPROVED MATERIAL IN LIEU OF THE HDPE FROM THEIR APPROVED LIST PROVIDED ALL PIPE, PIPE BEDDING, BACKFILL AND INSTALLATIONS ARE IN ACCORDANCE WITH THE CURRENT VDOT STANDARDS. ANY PIPE MATERIAL PROPOSED AS CL. IV RCP SHALL NOT BE SUBSTITUTED WITH ANOTHER PIPE MATERIAL. NOTE: ALL DRAINAGE STRUCTURES WITH A DEPTH OF 12' OR GREATER SHALL HAVE SAFETY SLABS IN ACCORDANCE WITH STANDARD SL-1 AS FOUND IN THE 2oo8 ROAD AND BRIDGE STANDARDS. NOTE: ALL DRAINAGE STRUCTURES WITH A DEPTH OF 4' OR GREATER SHALL HAVE STEPS IN ACCORDANCE WITH STANDARD ST-1AS FOUND IN THE 2oo8 ROAD AND BRIDGE STANDARDS. NOTES: i. ALL FILL TO BE PLACED AT 95% COMPACTION. 2. MINIMUM 3.5' OF COVER MUST BE MAINTAINED OVER W/L. 3. MINIMUM OF 1' OF VERTICAL SEPARATION FROM STORM SEWER & W/L AND 1.5' OF SEPARATION BETWEEN W/L & SANITARY SEWER MUST BE PROVIDED. NOTE: CLASS I BACKFILL MATERIAL SHALL BE CRUSHER RUN AGGREGATE SIZE NO. 25 OR 26, AGGREGATE BASE MATERIAL SIZE 21A OR 21B, FLOWABLE FILL, OR CRUSHED GLASS CONFORMING TO THE SIZE REQUIREMENTS FOR CRUSHER RUN AGGREGATE SIZE 25 AND 26, PER VDOT ROAD AND BRIDGE SPECIFICATIONS, SECTION 302.03G. NOTE: WEIR PLATE TO BE BOLTED & SEALED TO DETENTION SYSTEM WITH WATERTIGHT CONNECTIONS. MANUFACTURE / INSTALL ONE (1) OVERFLOW WEIR (EQUIVALENT DIAMETER=16.41") ACROSS THE STEEL PLATE (INVERT ELEVATION 520.00') BERKMAR DRIVE STATE ROUTE 1403 ., OAT,[ 0120" WEIR PLATE DETAIL MANUFACTURE / INSTALL ONE (1) 09'Xi6" MID -FLOW ORIFICE IN THE STEEL PLATE (INVERT ELEVATION 515.5o') INSTALL TRASH RACKS ON ALL ORIFICES, TYP. SEE THIS SHEET FOR DETAIL, OR EQUIVALENT. MANUFACTURE / INSTALL ONE (1) 04.5" LOW -FLOW ORIFICE IN THE STEEL PLATE AT THE LOW POINT OF THE DETENTION SYSTEM (INVERT ELEVATION=510.50') SCALE:1"=5' ELEV.=520.50' (TOP OF PIPE) NFURCtU 121 STEEL PLATE ELEV.=510.50' (BOTTOM OF PI A COUNTY OF ALBEMARLE Department of Community Development VIAGINtP Construction Record Drawings (As -built) for VSMP The following is a list of information required on construction record drawings for stormwater facilities (reference Water Protection Ordinance 17-422). It is preferable that the construction record drawing be prepared by someone other than the designer. Please do not provide design drawings as construction record drawings. A. A signed and dated professional seal of the preparing engineer or surveyor. B. The name and address of the firm and individual preparing the drawings on the title sheet. C. The constructed location of all items associated with each facility, and the inspection records to verify proper dimensions, materials and installation. The items include, but are not limited to the following: 1. Inspection Records and photographs for pipe trenches and bedding, including underdrains. 2. Video Pipe Inspection for any pipes which are not accessible or viewable. 3. Updated Location with geo-coordinates of all facilities. 4. Verified Drainage Area maps for the drainage area treated, and for drainage to the facilities. 5. Current physical and topographic survey for all earthen structures. Ponds should include a survey of the pond bottom. Surveys should verify pond volumes are per design. Corrections may be required for alterations from the design. 6. Plants, location and type. 7. Plans and profiles for all culverts, Pipes, Risers, Weirs and Drainage Structures - Display the installed type of drainage structures, culvert/pipe size, weirs, materials, inlets or end treatment(s), inlet and outlet protection, alignment and invert elevations compared to design. 8. Computations: For significant deviations from design, provide sealed computations verifying that the as -built condition is equivalent or better than design. 9. Ditch Lines - Display the constructed location of all ditch lines and channels, including typical sections and linings. 10. Easements - Show all platted easements with dead book references labeled. Facilities and drainage must be within platted easements. Provide copies of recorded documents. 11. Guardrail, fences or other safety provisions - Display the constructed location of all safety provisions; fences, guardrail, including the type, length and applied end treatments, compared to design. 12. Material layers - biofilter media, stone layers, sand layers, keyways and cores must be verified as to material types and depths. Include inspection reports, boring or test pit reports and materials certifications. Biofrlter media must be an approved state mix. 13. Access roads - show location of access roads, surface treatment, drainage, etc, as applicable. 14. Compaction reports are required to verify fill compaction in dams. 15. Manufacturers certifications for proprietary BMP's certifying proper installation and functioning. tl SCOTT✓R. CZ?LLINSIZ No. 35791 11, 06 22 4J 01 n / / � Z z 0 O� U u U In w 0 z \ O W w W N N to .i C4 o .. .� o T� . rn ti • M z M 0') LU N 0 I z C�4 LU W N 2:J_ W N Q Q � > z LLJ Q 0 LLI J z > Nt LU C/) M O Lu L9W ~O �O 0 0 z = N O N WU Y p LU LJJ ~ Q F- F--- 2 ZLJJ � (nr'� V O ~ LU Ln J ~ _ 0 z Q Q o O N U_ U W w O w a u=i JOB NO. 202196 SCALE AS SHOWN I High Performance (Bell & Spigot) Joints STANDARD DUROMAXX BELL (TYPICAL 11" WIDE) - HAND DUG BELL HOLE WI SMALL TROUGH IN FRONT OF BELL A "bell hole" needs lobe dug under the bell end of the pipe to accommodate the diameter difference. NOTE: ALL JOINTS TO BE WATERTIGHT A best practice for bell and spigot joints is to lay a steel plate under the bell to help "home" the neat pipe. 20 MIL PE IMPERMEABLE LINER OVER TOP OF PIPE LIMITS OF (IF REQUIRED) REQUIRED _ V BACKFILL 20"TYP38'T' SEE TYPICAL CKFILL DETAIL TES TYPICAL SECTION VIEW 2161it61RISTLIRM NOTE: IF SALTINGAGENTS FOR SNOW AND ICE REMOVAL ARE USED ON OR NEAR THE PROJECT, A GEOMEMBRANE BARRIER IS RECOMMENDED WITH THE SYSTEM. THE GEOMEMBRANE LINER IS INTENDED TO HELP PROTECT THE SYSTEM FROM THE POTENTIAL ADVERSE EFFECTS THAT MAY RESULT FROM A CHANGE IN THE SURROUNDING ENVIRONMENT OVER A PERIOD OF TIME. PLEASE REFER TO THE CORRUGATED METAL PIPE DETENTION DESIGN GUIDE FOR ADDITIONAL INFORMATION. Standard Back -fill Detail - Specification & Standard Drawing F,:pe l,en aHI DEBRIS CAGE I/2' zinc Fa eltaehetl withith 3 fa/8' feaener �� ® t-1/0' di". hole. Isometric G Il'V31UU11 1/4- HDFE plate (optional) _ HpPP rtrnctnral plmUc ailF 2-1/8" holes and IJ.- Plato naf..Larcd by PI"":m salinities Iseor equal mown vlln ophoc.l plot. Hope •L^q ctn rnl Pln sl is iilh hole. sad 1/4- plate •.rtf.,t.red by Pottle Inn. or ",.1 PLAEPSTIC SOLUTIONS .O. Re. a:1sB Misnomer Yt ?2m/ INC. 877-877-8727 rw.plelie-Iduze eqm UNDERGROUND DETENTION SYSTEM MINIMUM TRENCH & BACKFILL REQUIREMENTS 1. THE TRENCH CONTAINING THE TRIPLE RUN OF 120" HDPE STORM PIPE SHALL HAVE A 474" WIDE TRENCH. THE TRENCHES CONTAINING THE 15" BYPASS HDPE PIPE AND THE 15" OUTFALL PIPE SHALL HAVE 36" WIDE TRENCHES. CONTRACTOR SHALL WRAP THE EXCAVATED TRENCHES WITH A 6 OUNCE FILTER FABRIC CLOTH. A SUITABLE FOUNDATION SHALL BE BENEATH THE TRENCHES' FILTER FABRIC CLOTHS. 2. TRENCHES TO INCLUDE A 6" #57 STONE BED AT 95% COMPACTION BENEATH THE HP STORM PIPES. 3. TRENCHES SHALL BE BACKFILLED WITH #57 STONE AT 95% COMPACTION AND SHALL EXTEND A MINIMUM OF 6" VERTICALLY ABOVE THE CROWN OF THE STORM PIPES. 4. THE TOP OF THE #57 STONE SHALL BE COVERED WITH A 6 OUNCE FILTER FABRIC CLOTH, OVERLAPPING THE PREVIOUSLY INSTALLED CLOTH THAT SURROUNDS THE BOTTOM AND SIDES OF THE TRENCHES. 5. SUITABLE FILL REACHING THE FINISHED GRADES SHALL BE APPLIED ABOVE THE TOP LAYER'S FILTER CLOTH, MEETING MINIMUM PIPE MANUFACTURER'S REQUIREMENTS TO PREVENT FLOATATION AND ENSURE PIPE INTEGRITY IS MAINTAINED. 6. A MINIMUM COVER OF 12" IS REQUIRED ABOVE THE CROWN OF THE STORM PIPES. 7. SEE THE'TYPICAL BACKFILL DETAIL' ON THIS SHEET FOR ADDITIONAL UNDERGROUND DETENTION SYSTEM PIPE REQUIREMENTS. DIAMETER MAX COVER" 75% MAX COVER"* 30"-42" 50'-0" 37'-8" 48'-96' 30'-0' 22'-6" 120" 25'-V - *FOR INITIAL BACKFILL USE ASTM D2321, CLASS I, II MATERIAL. -REDUCED MAX. COVER WHEN USING ASTM D2321 CLASS III MATERIAL IN TRENCHIHAUNCH ZONE OR FOR FIRST BACKFILL. O MINIMUM TRENCH WIDTH MUST ALLOW ROOM FOR PROPER COMPACTION OF HAUNCH MATERIALS UNDER PIPE. MIN. WIDTH = (1.25 x DIAMETER) + 12" (FOLLOW ASTM D2321) O FOUNDATION SHALL BE WELL CONSOLIDATED & STABLE. O BEDDING MATERIAL SHALL BE A RELATIVELY LOOSE MATERIAL THAT IS ROUGHLY SHAPED TO FIT THE BOTTOM OF THE PIPE, 4" TO Be IN DEPTH. O DUROMAXX STEEL REINFORCED (SRPE) PIPE. O INITIAL BACKFILL FOR PIPE EMBEDMENT MATERIAL TO MEET ASTM D2321 CLASS I, II, III ORAPPROVED EQUAL, COMPACTED TO 90% STANDARD PROCTOR (NATIVE MATERIAL CAN BE UTILIZED THAT MEETS ASTM D2321 OR APPROVED EQUAL). • ALL LIFTS PLACED IN CONTROLLED MANNER. TO PREVENT UNEVEN LOADING, IT IS RECOMMENDED THAT LIFTS NOT EXCEED Be UNCOMPACTED LIFT HEIGHTS. IS HAUNCH ZONE MATERIAL SHALL BE HAND SHOVELED OR SHOVEL SLICED INTO PLACE TO ALLOW FOR PROPER COMPACTION. O MINIMUM HEIGHT OF COMPACTED COVER PER DIAMETER FOR CONVENTIONAL HIGHWAY LOADS (DISTANCE MEASURED FROM TOP OF PIPE TO BOTTOM OF FLEXIBLE PAVEMENT OR TOP OF RIGID PAVEMENT): 12' MINIMUM FOR PIPE DIAMETERS 30'- 60' 18' MINIMUM FOR PIPE DIAMETER 66"-72" 24" MINIMUM FOR PIPE DIAMETERS 84" - 96" 36' MINIMUM FOR PIPE DIAMETER 120' IS INITIAL BACKFILL ABOVE PIPE MAY BE REDUCED AS NOT TO ENCROACH UPON ROAD BASE, OTHERWISE: 6' MINIMUM FOR PIPE DIAMETERS 30'- 60' 12' MINIMUM FOR PIPE DIAMETERS fib' - 96' 18" MINIMUM FOR PIPE DIAMETER 120' OFINAL BACKFILL MATERIAL SELECTION AND COMPACTION REQUIREMENTS PER THE PROJECT PLANS, SPECIFICATIONS. ENGINEER OF RECORD. NOTES: • GEOTEXTILE SHALL BE USED AS REQUIRED TO PREVENT SOIL MIGRATION. • FOR MULTIPLE BARREL INSTALLATION THE RECOMMENDED STANDARD SPACING BETWEEN PARALLEL PIPE RUNS SHALL BE = PIPE DIA.I2 OR & FOR PIPE DIAMETERS 72' AND LARGER. CONTACT YOUR CONTECH REPRESENTATIVE FOR NONSTANDARD SPACING. • BACKFILL REQUIREMENTS SHALL FOLLOW ASTM D2321. IN THE EVENT OF DISCREPANCIES, ASTM D2321 SHALL SUPERCEDE THIS DETAIL. PLAN FRONT 48'0 to 90'0 FITTING REINFORCEMENT MAY BE REQUIRED BASED ON HEIGHT OF COVER AND LIVE LOAD CONDITION TYPICAL MANWAY DETAIL NOT TO SCALE 36"0 MAX., ACCESS CASTING REINFORCING TABLE o� vk WITH GRADE RINGS AS REQUIRED, TO BE PROVIDED AND INSTALLED BY "'BEARING TEMPORARYCOVERFOR HDPE CONTRACTOR. MAYBE TOP MOUNTED 0HDPE SCOTT R. LLINS'Z CONSTRUCTION LOADS PROTECTION (AS SHOWN) OR RECESSED. w RISER A B 0 REINFORCING PRESSURE 0 0 RIM/FINISHED o (PSF) U No. 35791 11, FINISHED SLAB HEIGHT OF - GRADE T T GRADE __ _ = t= VARIES 0 24 4'0 26" #5@10"OCEW 2,540 "�,� 01/06)(22 FFt,,;14 COVER a° a 4'x4' #5@10"OCEW 1,900 O.c,�, tir, S TyG 4' 6"0 #5 @ 10" OCEW 2,260 ZONAL E ° 30" 4'-6' x 4'-6" 32" #5 @ 9" OCEW 1,670 510 #5 @ 9" OCEW 2,060 - GASKET MATERIAL OHDPERISER ¢ 36 5'x5' 38 #5@8"OCEW 1,500 SUFFICIENT TO PREVENT a 65 5'-6"0 CONSTRUCTION LOADS SLAB FROM BEARING ON 42" 44„ #5 @ 8" OCEW 1,490 RISER TO BE PROVIDED BY _ 5'-6" x 5'-6" #5 @ 8" OCEW 1,370 FOR TEMPORARY CONSTRUCTION VEHICLE LOADS, AN EXTRAAMOUNT OF COMPACTED COVER MAY BE REQUIRED OVER CONTRACTOR. 01311"TYP. 610 #5 @ 7" OCEW 1,210 TH E TOP OF TH E PI PE. TH E H EIGHT -OF -COVER SHALL MEET THE MIN I MU M REQU I REMENTS SHOWN IN THE TABLE BE LOW. SECTION VIEW 48 81x6' 50 #5@7"OCEW 1,270 THE USE OF HEAVY CONSTRUCTION EQUIPMENT NECESSITATES GREATER PROTECTION FOR THE PIPE THAN FINISHED GRADE COVER MINIMUMS FOR NORMAL H IGHWAY TRAFF IC. ... Minimum Height of Cover Requirements for Construction Loads. The Minimum Cover should be a COMPACTED Height of Cover Requirement. Diameter/Span (in) Axle Load ()I >32550 50s75 1 755100 1 110s150 30-42 2.0 ft 2.5 ft 3.0 ft 3.0 ft 48-72 31ft 3.0ft 3.5ft 4.0ft 84-96 3.0 ft 3.5 ft 4.0 ft 4.5 ft 108-120 3.5ft 4.0ft 4.5ft 5.0ft *MINIMUM COVER MAY VARY, DEPENDING ON LOCAL CONDITIONS. THE CONTRACTOR MUST PROVIDE THE ADDITIONAL COVER REQUIRED TO AVOID DAMAGE TO THE PIPE. MINIMUM COVER IS MEASURED FROM THE TOP OF THE PIPE TO THE TOP OFTHE MAINTAINED CONSTRUCTION ROADWAY SURFACE. CONSTRUCTION LOADING DIAGRAM NOT TO SCALE ASSUMED SOIL BEARING CAPACITY ACCESS CASTING NOT SUPPLIED BY CONTECH 7D /;V> A A J�,s B #4 DIAGONAL TRIM #4 DIAGONAL TRIM v BAR (TYP.4 PLACES), BAR (TYP.4 PLACES), _ � f ��__ SEE NOTE 7. I + i �� 4- SEE NOTE 7. - --- k----�- - r--�T=_-----cTr----, t ---it --- - - -t - t---- -- ---�C----- -t- .---�� - t - 2„COVER r----yt ---� _ --= 4---tr----� (TYP) \ `♦ C' Q1 }1 i' I `v' f OO{Q� }I `�i' I I ti 4 ,/ �� L OPENING IN PROTECTIOOPENING N I ___ 117 1 �_� _ ____f/�__ r ___ ___ r�l___ PROTECTION --- I- -----�-- -I ---- SLAB FOR --- - _- -- -- --�- - - SLAB FOR tl I t ACESS i �* I tr ACCESS I- es- I �tr I' INTERRUPTED BAR _-- _J - --ice- �Q - I i"� I L_ Jl-- 1�___4----11-----J REPLACEMENT, INTERRUPTED BAR I II V II SEE NOTE 6. SPECIFICATION FOR STEELREINFORCEDPOLYEHTYLENEPIPE-ALUMINIZEDTYPE2STEEL REPLACEMENT, SEE SCOPE HANDLING AND ASSEMBLY NOTE 6. STANDARD STANDARD THIS SPECIFICATION COVERS THE MANUFACTURE AND SHALL BE IN ACCORDANCE TO THE REQUIREMENTS OF ASTM- REINFORCING, REINFORCING, OB INSTALLATION OF THE STEEL REINFORCED POLYEHTYLENEPIPE (SRPE) D2322. -..---- - SEE TABLE SEE TABLE DETAILED IN THE PROJECT PLANS. INSTALLATION ROUND OPTION PLAN VIEW SQUARE OPTION PLAN VIEW MATERIAL SHALL BE IN ACCORDANCE WITH AASHTO STANDARD THE ALU MIN IZED TYPE 2 STEEL COILS SHALL CONFORM TO THE SPECIFICATIONS FOR HIGHWAY BRIDGES, SECTION 28, DIVISION II NOTES: 7. TRIM OPENING WITH DIAGONAL#4 BARS, EXTEND BARS APPLICABLE REQUIREMENTS OF AASHTO M274 OR ASTM A929. OR ASTM D232iAND IN CONFORMANCE WITH THE PROJECT PLANS MINIMUM OF 12" BEYOND OPENING, BEND BARS AS REQUIRED AND SPECIFICATIONS. IF THERE ARE ANY INCONSISTENCIES OR 1. DESIGN IN ACCORDANCE WITH AASHTO, 17th TO MAINTAIN BAR COVER. PIPE CONFLICTS THE CONTRACTOR SHOULD DISCUSS AND RESOLVE EDITION AND ACI 350. WITH THE SITE ENGINEER. 8. PROTECTION SLAB AND ALL MATERIALS TO BE PROVIDED AND THESRPESHALL BE MANUFACTURED IN ACCORDANCE WITH THE 2. DESIGN LOAD HS25. INSTALLED BY CONTRACTOR. APPLICABLE REQUIREMENTS OF AASHTO M36 OR ASTM F2562. THE IT IS ALWAYS THE RESPONSIBILITY OF THE CONTRACTOR TO PIPE SIZES, GAGES AND CORRUGATIONS SHALL BE AS SHOWN ON FOLLOW OSHA GUIDELINES FOR SAFE PRACTICES. 3. EARTH COVER = V MAX. 9. DETAIL DESIGN BY DELTA ENGINEERS, ARCHITECTS AND LAND THE PROJECT PLANS. SURVEYORS, ENDWELL, NY. 4. CONCRETE STRENGTH =4,000 psi ALL FABRICATION OF THE PRODUCT SHALL OCCUR WITHIN THE UNITED STATES. 5. REINFORCING STEEL= ASTM A615, GRADE 60. 6. PROVIDE ADDITIONAL REINFORCING AROUND OPENINGS EQUALTOTHE BARS INTERRUPTED, MANHOLE CAP DETAIL MATERIAL SPECIFICATION HALF EACH SIDE. ADDITIONAL BARS TO BE IN THE NOT TO SCALE SAME PLANE. NOT TO SCALE 2Y2 Y4" (#6) REBAR CAN BE CUT FLUSH TO OUTSIDE OF RAIL (BAR LENGTH = 163/ ") OR BAR CAN EXTEND BEYOND RAILY2"t ALL STEEL PER ASTM A36 BRICATION TOLERANCE: tV4" 4T BA R AN D REBAR: MILL ,LERANCE APPLIES 12" TYP. CENTER TO CENTER '/" HOLE W/ %" REBAR RUNG, RUNG SPACING io WELD REBAR TO RUNG ON OUTSIDE OF STEEL RAIL 2Y2" x %" FLAT BAR SIDE RAIL PLAN SIDE NOTES: 1. LADDERS CAN BE MADE IN 20'.0" STANDARD LENGTHS AND CUT TO FIT 2. ALL MATERIAL TO MEET ASTM A36 3. LADDER TO BE HOT DIPPED GALVANIZED PER ASTM A-123 AFTER FABRICATION IS COMPLETE STANDARD LADDER DETAIL NOT TO SCALE PART NO. HALAGVL16 PROVIDE MINIMUM OF 4 ATTACHMENT ANGLES (2 ON EITHER SIDE OF LADDER RAIL) TO CONNECT LADDER TO RISER EXTENSION RISER w/ LADDER AND STEPS IF EXTENSION IS REQUIRED RISER w/ LADDER AND STEPS MAINLINE CMP 22/3xy,5x1,3x1,ETC. NOTE: THIS DRAWING IS INTENDED TO APPLY TO LADDERS INSTALLED IN RISERS HAVING A DIAMETER OF 30" OR LARGER. DUE TO SPACE CONSTRAINTS AND LIMITED ACCESSIBILITY, THE PRACTICALITY AND SUITABILITY OF UTILIZING RISERS SMALLER THAN 30" DIAMETER ANDOR INCORPORATING LADDERS IN THESE SMALLER DIAMETER RISERS SHOULD BE ADDRESSED BYTHE OWNER AND PROJECT ENGINEER 'NOTE: WHEN RISER EXTENSIONS ARE USED, THE PLANT SHOULD CUT 3" FROM THE SIDE RAILS AS SHOWN '3" FROM BOTTOM OF LADDER RAIL TO RISER JOINT '3" FROM TOP OF LADDER RAIL TO RISER JOINT LADDER RAILS AND RUNGS (2)y" FILLET WELDS V LONG L5"x3"xY4'x16"LONG ATV'0" ATTACH MENT ANC MIN I MU M OF 4 ANGLES P SPACING. LONG LEG TO LADDER SECTION, (2 EACH SIDE 4 PROJECT OUT. WELD TOP LADDER) 6' MAX. SPACI V-6" AND BOTTOM OF 3" LEG TO EACH VERTICAL MAX. CORRUGATION CREST (THESE ANGLES SHOULD BE USED a FOR LARGER DIAMETER a MAINLINES WHERE ADDITIONAL STEPS ARE NEEDED) 6" FROM RUNGTO RISER JOINT 8" FROM RUNG TO RISER JOINT SECTION A -A RISER LADDER DETAIL NOT TO SCALE RISER NORMALLY HDPE (4)YD" FILLET WELDS FROM EACH ANGLE CORRUGATION CREST (2WELDS EACH SIDE) (4) 43" x 3" x 3/6" _ 5Y2" LONG (2)y" FILLET WELDS 1" LONG FROM EACH ANGLE TO LADDER RAIL (4)Ye" FILLET WELDS (4)ys"FILLET WELDS FROM EACH ANGLE TO FROM EACH ANGLE TO CORRUGATION CREST CORRUGATION CREST (2 WELDS EACH SIDE) (2 WELD EACH SIDE) L3"x3"x3/s" L3"x3"x3/18" 5Y2" LONG SYp" LONG 1E, LADDER RAILS AND RUNGS PLAN ELEVATION RI: LADDER RI AND RUNG T� tiFee- M z t� M 0')C UJ N G 0 1 z , N J N W Q Q . < z 0 . O . J LI""I � M LW O LLJ CO 0 T� 2 N Q O U1. N W 1. O Q _ W LLJ Ln_ l Fee- u I W Z (I"t I- U)LI.J tttttttttttttt� i JLU l z Q O O N U_ H ,-Owl w O IY a w 2 Ln JOB NO. 202196 SCALE AS SHOWN SHEET NO. 10 TH o SCOTT R. 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