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WPO201700075 Plan - VSMP 2019-09-25
LEGEND EXIST NEW DESCRIPTION 165 TC x 125 TC TOP OF CURB ELEVATION 165 x 125 SPOT ELEVATION 165 TW x 125 TW TOP OF WALL ELEVATION 165BW x 125BW BOTTOM OF WALL ELEVATION BENCHMARK STORM SEWER RD RD ROOF DRAIN SEWER LINE s"w s"W WATER LINE GAS GAS GAS LINE OHE OHE OVERHEAD ELECTRIC WIRE UGE UGE UNDERGROUND ELECTRIC OHT OHT OVERHEAD TELEPHONE LINE UGT UGT UNDERGROUND TELEPHONE LINE D - DRAIN INLET (DI) 0 0 STORM/SANITARY MANHOLE C C PLUG ®"" WATER VALVE & BOX ♦ 4- FIRE HYDRANT CK I WATER METER ♦� ♦� LIGHT POLE f f UTILITY POLE PROPERTY LINE - - - ADJACENT PROPERTY LINE VACATED PROPERTY LINE BUILDING SETBACK PARKING SETBACK SANITARY EASEMENT -- GRADING EASEMENT DRAINAGE EASEMENT UTILITY EASEMENT - WATER EASEMENT ACCESS EASEMENT _ STORM DRAINAGE EASEMENT ^^��^ TREE LINE • FENCE STREAM 312 1- INTERVAL CONTOUR 300- oo - INDEX CONTOUR CG-2 CG-2 STANDARD 6" CURB CG-6 CG-6 COMBINATION 6" CURB & GUTTER a CONCRETE PAVEMENT / SIDEWALK RIPRAP ASPHALT GRASS EC-2 MATTING EC-3 MATTING WETLAND 10 to PARKING COUNT - CROSSWALK ?X����� HANDICAP ACCESSIBLE AISLE ZEN /FN CG-12 HANDICAP PARKING C D INDICATES REVISION NOTE: 1. THE SIZE OF THE SYMBOLS MAY VARY FROM WHAT IS SHOWN. V5MF PLAN AMENDMENT FOR CROZE.--T COURT TMP 05GOO-00-00-04500 WFO 2017-00075 WHITE HALL DISTRICT, ALE3EMARLE COUNTY, VIRGINIA r_ VICINITY MAP SCALE: 70V=1,000' ".veR-LN� ail r 1i 41 `?0uv �z It • o �i • RISEN JI 'L-M a�. R r y: er ..- 240 �P� 7 t`s•'� � = f�¢LLEA - .aN,�pR'i ,1". Fi Y '� �� �icu:fM}idOCE IMAGE PROVIDED BY GOOGLE MAPS SHEET INDEX C I - COVER SHEET C2 - EXISTING CONDITIONS C3 - SUBDIVISION LAYOUT PLAN C4 - SUBDIVISION UTILITY PLAN C5 - SUBDIVISION GRADING PLAN CG - ER05ION CONTROL NARRATIVE C7 - E5CP STAGE I - PERIMETER CONTROLS C8 - E5CP STAGE I I - GENERAL CON5TRUCTI ON C9 - MITIGATION PLAN C 10 - CHANNEL RE5TORATI ON PLAN CI I - CHANNEL RE5TORATI ON PLAN C 1 2 - PERMANENT 5WM PLAN C 13 - BMP D ETA I L5 C 14 - ER05I ON CONTROL DETAILS C 15 - EROSION CONTROL DETAILS C I G - STORM 5 EWER P RO E I LE5 AMENDMENT NARRATIVE 1. Addition of 6 lots to subdivision. Increased land disturbance to 9.00 acres. 2. Expanded Biofilter A to accommodate expanded drainage area. APPROVED 3. Addition of Sediment Trap 3 for increased disturbance. by the Albemarle County 4. Expanded mitigation plan per new disturbance. Community Development Department 5. Parcel 56-45A2 shall be revised with a BLA. 2.18 Acres from Parcel 56-45A2 shall be added Date 9/25/2019 to Parcel 56-45. The Residue Parcel 56-45A2, 1.29 Acres, shall be left undisturbed and is File WP0201700075 not covered by this VSMPA. 6. Addition of Sediment Trap 4 to address pooling from a wet spot discovered in the field PROPERTY INFORMATION OWNER/DEVELOPER: LEGAL REFERENCE: STONY POINT DESIGN BUILD 200 GARRETT STREET SUITE 0 CHARLOTTESVILLE, VA 22902 DB 4951 PG 170 DB 1479 PG 180 DB 666 PG 109 DB 488 PG 007 DB 5126 PG 635 WB 128 PG 705 SOURCE OF BOUNDARY & TOPO SOURCE OF BOUNDARY SURVEY: PLATS OF RECORD, COMPILED BY ROGER RAY AND ASSOCIATES. SOURCE OF TOPOGRAPHY: DOMINION ENGINEERING FIELD SURVEY COMPLETED ON 7-25-2017 MISS UTILITY TICKET #04368 A720000816-OOA SUPPLEMENTED WITH FIELD TOPOGRAPHY BY ROGER RAY AND ASSOCIATES. TMP 56-45A2 TOPO SURVEYED BY ROUDABUSH GALE AND ASSOCIATES ON 1 /20/2019 BENCHMARK(S): NAVD88, IRON AND CAP SET ELEVATION=677.22 NAD83 VIRGINIA STATE PLANE SOUTH FLOOD ZONE According to the FEMA Flood Insurance Rate Map, effective date February 4, 2005 (Community Panel 51003CO237D), this property does not lie within the Zone AE 100-year flood plain. PARCEL AREA SUMMARY DISTURBED AREA: 9.00 AC PARCEL 56-45........................................................... 7.28 Ac. PARCEL 56D-1........................................................... 0.51 Ac. PARCEL 56D-2.......................................................... 1.03 Ac. LOT 56-D2 ROW ........................................................ 0.13 Ac. JAMESTOWN RD ROW .................................................. 0.20 Ac. PARCEL 56-45A2....................................................... 3.47 Ac. TOTAL PARCEL AREA.................................................12.62 Ac. NEW CROZET COURT SUBDIVISION ............................... 11.13 Ac. JAMESTOWN RD ROW .................................................. 0.20 Ac. TOTAL DEVELOPMENT AREA........................................11.33 Ac. Note: Residue of 56-45A2 = 1.29 Acres. Residue will not be disturbed and is not included in this VSMPA. LAND USE SCHEDULE MANAGED TURF ........................ 6.00 Ac. IMPERVIOUS .............................. 2.96 Ac. FOREST/OPENSPACE ................ 2.37 Ac. TOTAL SITE...............................11.33 Ac. STEEP SLOPES No Preserved Slopes exist within this property. WATERSHED Lickinghole Creek Watershed Supply BMP MAINTENANCE Maintenance Tasks Frequency • Mowing of grass filter strips and bioretention turf cover At least 4 times a year • Sot weeding, erosion repair, trash removal, and mulch raking Twice during growing season • Add reinforcement planting to maintain desired the vegetation density As needed • Remove invasive plants using recommended control methods • Stabilize the contributing drainage area to prevent erosion • Spring inspection and cleanup • Supplement mulch to maintain a 3 inch layer Annually • Prune trees and shrubs • Remove sediment in pre4reatment cells and inflow points Once every 2 to 3 years • Replace the mulch layer Every 3 years Crozet Court HOA shall maintain all onsite BMPs. 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 that maintains lateral support, or order to minimize any hazard to persons, physical damage to adjacent land and improvements, and damage to any public street because 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 Ibs/acre, and in the months of September to February to consist a 50/50 mix of Annual Ryegrass and Cereal Winter Rye, or in March and April to consist of Annual Rye, or May through August to consist of German Millet. Straw mulch is to be applied at 80lbs/100sf. Alternatives are subject to approved by the County erosion control inspector. 18. Permanent stabilization shall be lime and fertilizer, permanent seeding, and mulch. Agricultural grade limestone shall be applied at 90lbs/1000sf, incorporated into the top 4-6 inches of soil. Fertilizer shall be applied at 1000lbs/acre and consist of a 10-20-10 nutrient mix. Permanent seeding shall be applied at 180lbs/acre and consist of 95% Kentucky 31 or Tall Fescue and 0-5% Perennial Ryegrass or Kentucky Bluegrass. Straw mulch is to be applied at 80lbs/100sf. Alternatives are subject to approved by the County erosion control inspector. 19. Maintenance: All measures are to be inspected weekly and after each rainfall. Any damage or clogging to structural measures is to be repaired immediately. Silt traps are to be cleaned when 50% of the wet storage volume is filled with sediment. All seeded areas are to be reseeded when necessary to achieve a good stand of grass. Silt fence and diversion dykes which are collecting sediment to half their height must be cleaned and repaired immediately. 20. All temporary erosion and sediment control measures are to be removed within 30 days of final site stabilization, when measures are no longer needed, subject to approval by the County erosion control inspector. 21. This plan shall be void if the owner does not obtain a permit within 1 year of the date of approval. (Water Protection Ordinance section 17-204G.) 22. Permanent vegetation shall be installed on all denuded areas within nine (9) months after the date the land disturbing activity commenced. (Water Protection Ordinance section 17-207B) GENERAL CONSTRUCTION NOTES 1. Prior to any construction within any existing public right-of-way, including connection to any existing road, a permit shall be obtained from the Virginia Department of Transportation (VDOT). This plan as drawn may not accurately reflect the requirements of the permit. Where any discrepancies occur the requirements of the permit shall govern. 2. All materials and construction methods shall conform to current specifications and standards of VDOT unless otherwise noted. 3. Erosion and siltation control measures shall be provided in accordance with the approved erosion control plan and shall be installed prior to any clearing, grading or other construction. 4. All slopes and disturbed areas are to be fertilized, seeded and mulched. 5. The maximum allowable slope is 2:1 (horizontal: vertical). Where reasonably obtainable, lesser slopes of 3:1 or better are to be achieved. 6. Paved, rip -rap or stabilization mat lined ditch may be required when in the opinion of the County Engineer, or designee, it is deemed necessary in order to stabilize a drainage channel. 7. All traffic control signs shall conform with the Virginia Manual for Uniform Traffic Control Devices. 8. Unless otherwise noted all concrete pipe shall be reinforced concrete pipe - Class III. 9. All excavation for underground pipe installation must comply with OSHA Standards for the Construction Industry (29 CFR Part 1926). JU SHIMP ic. 0 45183 il 10)����� OR PAULA K TMP 56C-B-26A DB 2575 PC 395 U10 NIP WED DEAN OR DEBORAAL \ DB3303PG611 110 m / FRom \ TMP 56C-B-26A \ _/-- � N/F WESNER _ DB 3303 PG 611 � �y'/ /,/' /// j// �/ �/� �/�/ ,- � �/ // /' � ��-'� /� m � \ \ - \ SfREA jBUF_ER - - i + p m \\ wa Nq / �/ / / / / ASPHALT WOODSSMH DRIVEWAY STONE'' WALLO RET. WALL VI �\ \\�- / ) /I /��--- - - J_� AD acs7P XISTINGHOUSETO 0 \ TMP 56C-B-26 �. i' ' / % i CA I I / / l / / E ISTIN- DURING - m N F WESNER \ % i ;''' i I i ✓ I I /� / 36 oT - �, / / _ , \ CONSTRUCTION k I \ WB 146 PG 614 \ �, i / l l / / a \ u v l; �/ /' 1-STORY v my BRICK/MAME \ \ BASEMENT / / / / f / / ✓ MOOD \ /TMP/ 56-1 5A2 / / / - - - 0 WALL 3 472 �/ i ��\ \ 0 ,---- CNTSSMH m '�. \ O �`b%;�'' / 'i _-----------'�1\ \\ \\\\ ; \�\ �\ \\DIG /BULD, LC. 126 �� ��, / _ --/ , A 1 \ I / / /---20=X-7-ACSLEASEME - /' / ' ' N1 °08'50"E 1 .1 PF po �i18°08'50"E 279.70' - i 'r B / ' / % l j / \ \ \PF @\\72.1 3\ \ ; S18108' "W 477.84' / _-------- i \i \ \ `\ \ \ �� ,\„"� ,---' TMP 56D-1 6> ] , , 0.514 AC �'�� o ------''/ / ,J \ \ \ \ \\ \ \\ \ I I 1 /� PINE - - \ ` ` �I ETAL �' ST�NY-P01�1LT DESIGN I , � I T7 - SHED BUILD,LLC. \ BLOCK -STORY HOUSE//rn -� I / ' \ \ ` \ o BUILDIN /TBR5665 ON DB 4951 PG 170 o I5 / ■ I / / \ \ \ I MAPLE TMP 56C-C-6 ' i\ �-��", �' ,' I / , \ �HS(3 B TBR BASEMEN) TBR WOOD WALLLOCUST N/F BELEW -� \ \ \ TBR = 2. DB 2012 PG 716 , �I / ----� / i I i/��i i i \ mocusT o \ \ Y ,E x -b '5 W 279,74' 51- - A - ------------------ --- L- y ' /' / ' / /' /' ''�\jai // / ' ' I i'/ • 1 \\ \\ 1 \, I; I �i7 \ //, / , ♦ / /�F' / ��f ,� �i (/ , , I I I I I � / ' - � V 1 � 1 1 I V V A � I Igo �\ ;C 0 b C v /'� i // z, vI y��\ Xv m C / / i / V I 1 \ \ A v )408190,90 `v v �t o/� 602.625 ZA I A I i\ , \\ ,c x 1 SDM \\ CONC. AL Fau'aet r , v I I �v \ ITBR v TBR y / /' \ TBR 0610 ivv vv v 1 � v v \ O, \ \ 7B �� v BENCHMARK= 17 �� /j / ' /l i H$G B vv vv v \ � o vv I vv I vv A vv v FFE 667.64' -o 00 /'� i //� / / i v v o v v I v v,- xv v o HSGA //i ' '� / l /'r /� �/ ( l ; TMP 56-45`v' POLE p / ,-' , , 7.277 AC. 1 V A \ �v v v v TR \ BrkWd-2-2 / / ' / / ' ,' � / i' / ' I A O V AOE T 0HEv OHE O RIM=599.76 _ vv W vv TMP 56C-C-11j'/ / vvTONY POINT SIGN BUILDv �; \ ; I A vvv INV IN=590.45 i i / / 0� I I o \ \ \ / INV our=690. ,' / ��'"\ i / , / o \ \ \ DB 4951 170 \ �AVED DRI N/F WITT �\ /� /' / ti / 7�'J / I \ TMP\ 56D ` m DB 1505 PG 731 , I l i�%' / - / ' / \ rn y ABAND & CONC. WALK / / j ' / '� \ \ \ \ / \ o \ i I\ \ 2 �AN \\ �R \ \ \ \ ABANDON \ 1.028 ACTBR \ = �' I I �`% H & 1%LF %' POINT DESIGN __� i �_ \ \ \ \\ \\ \\ l /� i ► i \ I 0 SE R \\ STO BUILD \LLC. \\ \\ WA1IJR \�� �� vvvv \-__ / \ \ DB PGv 170 \v \ �W 7 memo , _\ \ \ \\� \ \ 1_-- \ \ \ /\ ,, \ ■ \ I I r I o 7 18°0\8'50°W' 279.$2' \\9 \ \ o I I F \ . \ y\\ \\ \ \\ \\\ \\ \\ - \ - •1�\ \ \\\ \ \\\ \ \ \ \ \ \ 1'1 k1.0• I \\ K� ROW 128 ACCD \ o S - - -/ - too\ M \ _��` \ \ �\ \\ \ \ \ \\ n / , I EX. °08'50"W 279,83' PF . �' @� \�\\ \ -=--�` \ \ \ \\\\\ \ \\ \\" \\ I ILDI EX. PAVED / \ \ 1 . \ \ \\ \ \\\\ \ \ \\ \ OLD ONC. xJ ACSA BUILDING PAVEI " \ \\ \ \ �"d-2-.� \ \ \ \ \� \\ \ \ \ BLOr� , ECT. ,� \\\ ` \RIM=so7.2a\ --- \ �;\ \ \ \ \ \ \ FOUND \\ I D.B. 25 L T 4 4 "� / AV-59a.50 \ BrkWd�24 \ \ \ \ \ \ TBR I \ D.B. 925 NNI LOT 7 v out=ss5.3�-�---__ \ _ PG. 584 RIM=610.98 �� \ �\\\ \ \ \ \L \'`\ \ I I TMP 56D-4 ` --\ IN_=�600.84 \ IN cN/F MORRIS �TMP 56D-D-7 DB 6 7PG 34 SNEAD � wc II /DB 4171 PG 306 ' 4 L° ' D INTERMIi7lpT ,. STREAM BLOCK D, SECT. 2 LOT 6 �� _ `-� \\ \ 3i3 �rl wd-z-s Icy m � \ \ R 657.95 TMP 56D-D-6 \ - \ 1 \,� I V IN=648.07 "M r7 RIM= 5 Z5 \ V OUT=647. 7 76 I N IF @ 344.34' IN= 4�- I\ \ \ HSG{B \\ / 37 3 E N/FROACH �� / S� �� T=so .1�v�'�:;�v _-- /I �\ wv i L PUkDING I/"1 00 1 DB 2254 PG 508 / / 82 �: { `\ { i / i i / \ ;N HSG B ' �,� 4 SG { / i I // ' i / J�IB� 1 \ 1 TMP 56D-5 20I v I SAN, f`SMT j \ T v % �� \ of N LAYTON / BLOCK D, SECT 2 D.P. 925 r ' I r' i / , col DB 614 PG 435 P 584/ ! / / rT I 1 * a ' LOT 5 2 �,•�/ l 1� '' l ; /' / I 1 PAVEUI i TMP 56D-D-5 IF @ 244.43' •� /v ki I l �� 1/ / I /l 11 IXiivE ------------------------------------------------------------------ z / N/F CARVER '� "V / / `v i / FI I o DB 1360 PG 87 `� `v_-- ' 'yam v ' r i i A'00-- v BLOCK ASECT. '----- 'AJ I I I I \\ \V AV V A Vvv EX. B\ 2 LOT 4 \ � I , I I I \ \\ \ , BUILDING I \ I TMP 56D-D-4 PA�Eo I \ ' N/F FISHER\I \ oAIVE DB 631 PG 497 / BLOCK A SECT. 2 / �\ ' ��� '\ `\ '� '\ \ \\\ \\\ \�I ,FH I `, LOT 3 �� l �v - / Brkw2,7 - - - - - - - - - - - - - - - -- TMP 56D-D-3 7E61 TP RI I / N/F MACQUEEN 7�\ BPoM -24 \ INV IN=63-1 ;�--IPoC OIIi�63 .73 DB 3777 PG 710 , / u IN=6�28.88 _- \ `�\ LOT 7 / / NV aN�T-k&M..6 , \ BLOCK D, SECT. 2 ' \ X_ ____ ;.== �l TMP 56D-7 .,ELI / LOT 2 / IF BENT -� DTP N/F PEMBROKE IF � 1-° 0' Irk 245.93' - - DB 1861 PG 708 vv / TMP 56D-D-2 �' IF @ 57.58 ' N/F WINSOR IF ' / DB 4525 PG 5 3 BLOCK D, SECT. 2 ' LOT 1 / TM -D-1 BAS `CINF �R ' 4760 PG 474 MESTO BLOCK A, SEC . 1 ROAD TMP 56D-A-5 / BLOCK A, SECT. 2 / N/F RALSTON / LOT 4 ' \ 56--R/W DB 4711 PG 692 / TMP 56D-A-4 / r TeR \ 64O AC / DB/2461 TSULKA PC 290 / f/ , \ \ I OUT. 64 64 / -�\ Y 18 S CT, cr, \ \ PAp��NT \ TREE TBR ISO \ IN: SAN MH-1 NV I RIM=648.74 644.01 INV OUT=635.31 BOUNDARY LINE TABLE Line Direction Length L1 N 30°03'00" W 29.80' L2 N 79°36'31" W 12.77' L3 N 35`23'20" W 36.01' L4 N 14*16'35" W 35.63' L5 N 13`54'31" W 32.33' L6 N 11°31'36" W 16.92' L7 N 49°51'24" E 6.72' L8 N 30`12'54" W 36.71' L9 N 35*02'17" W 26.10' L10 N 26`13'04" E 17.94' L11 N 37°23'16" W 12.82' L12 N 80`54'29" W 13.95' L13 N 27`34'06" W 54.21' L14 N 14*10'37" W 33.39' L15 N 26°39'33" W 25.50' L16 N 52°24'38" E 20.60' L17 N 02°39'30" E 23.49' L18 N 33*19'53" W 30.64' L19 N 07°46'32" E 17.45' L20 N 37"04'25" W 40.27' L21 N 85°07'57" W 16.94' L22 N 21°49'44" W 23.43' L23 N 00°48'07" E 36.94' L24 N 44`26'07" W 22.02' L25 N 40°42'52" W 35.67' L26 N 61 *17'45" W 17.53' L27 N 33`16'36" W 29.99' L28 N 33°05'56" W 1.82' CLAUDUIS CROZET PARK " ON SOIL TYPE BOUNDARY OVERLAND FLOW DIRECTION #1 1 50 100 150 1 Ju SHIMP ic. 0 45183 A -) L (n O U L L Q O co U Q �N rn rn rn O O N O N O N o O aO O N U-) (N > N 1'-) Date 03/14/2019 Scale Sheet No. C2 OF 16 File No. 17.014 �r OPEN SPACE m PARCEL A -- -- -- -- -- ✓� ^� ✓� N. 154,351 SF SWM FOREST ST FF NEW TREELINE ' 1 / OPEN SPACE _ 2.37AC --�� ,l --- 1/ TMP 56-45A2 REDUCEDVA BLAI IT(1CA DRAINAGE 56,23S.2ARES)SSM0 / m VARIABLE WIDTH ,' /' \ - - - - - - - - - m ESMT SWM FACILITY � J i k11Cr PRIVATE 0 / ' DRAINAGE ESMT \ i VARIABLE WIDTH SWM FACILITY � o= � .• SSMH J' f% ESMT LOT 4 LOT 3 LOT 2 LOT 1 14,841 SF m l LOT 6 LOT 5 9,807 SF 9,993 SF 10,368 SF FFE=676.38 1 / 1 9,790 SF 1 FFE=670.55 1 BFE=666.38 10,592 SF FFE=664.85 BFE=660.55 FFE-664.50 FFE=675.74 FRONT LOAD LOT 7 1 1 FFE=658.83 1 FRONT 4.50 BFE=665.74 I g / \ ��-�`%•�' J FRONT LOAD FRONT LOAD FRONT LOAD FRONT LOAD � IN -GROUND O 11,603 SF 1 FRONT LOAD SLAB 1 1 1 1 I = FFE=653.33 SLAB m l -,/ FRONT LOAD SLAB � LOT 8 _ _ _ - - - _ _ / _ _ = PUBLIC \� i �\ LOT 9 11,691 SF J - 18' DRIVEWAY W/ m I GG ESMTAGE------ `�/ }\ 10 938 SF BFE-638.33 J L - 6' PLANTING -- - ------ _ CG 9�RANCE I ' CU13B W. FFE=648.33 BE IN 6" _. - STRIP _ _ - _ (TYP.) R POSED ROW i FFE=645.00 FRONT LOAD 10 LANDSCAPING TAPER i - - & SIDEWALK ESMT. x 1 GUTTE - - / I � BFE=635.00 _-�•. ,.,. - - m FRONT LOAD PRIVATE NO PARKING ° AGATHA RIDGE LANE STRIP _ 0 , \ SAN. LAT. ESMT _ +• i e MUTCD R$_3 36-PUBLIC RQ2 - _ SIGHT _ �� - 25 MPH, ADT = 260 - �] 42 "'---'- LOT 10 DI IE MT \ ' ' 20' PUQUG- �_'' \ DRWAGE ESMT 13,743 SF 20' PUBLIC PROPOSED ROW <\ FFE=639.90 f DRAIN AGE--&- O \� \ BFE=629.90 �- - - _ - -- ----- - - OPEN SPACE �ej �; �\ \ FRONT LOAD J V �Mr `�\� SWM CCESS O DRAINAGE ESMT \ � e b PARCEL A moo/ ,/ J�`i `\ \ \ L -� \ ,� E11� 10' LANDSCAPING- \ 154,351 SF0 ' / & EWACK ESMT. _ PROPOSED ROW - ,//'�' (3.54ACRES)\ �> DISTANCE STV SIGN UTC R1-1 - -J `6 PISI HT ESMT � SANI A OVERLA Y WP-2 O \/ R25.0 20' SANITARY ESMT P. STRIP MT .//J ""-VARIABLE WIDTH ESMT 5' NDS>API G �' / / I /�- / ESMT (TYP.) ( ) ESMT. �� ,� I LOT 22 LOT 23 LOT 24 v0o STD. TO & , 18' DRIVEWAY � m NEW TREELINE / / j / /l / W/ CG-g / ' ��,0 I I 11,188 SF 10 220 SF 10,197 SF STRE SIGN CURIB W. CLAUDUIS CROZET PARK f PLANTING R30.0 ENTRANCE (TYP.) 6 i FFE=665.33 LOT 25 LOT 26 2:1 TAPER LOT 11 I STRIP r . • • i E BFE=655.33 FFE=670.63 FFE=674.83 I TO GUTTER ' ' f R25.0 ,T. ESMT / CG 12 FFE=660.63 9,804 SF 11,527 SF ' 0 E w 12,630 SF ' TYP.) � , ` E e FRONT LOAD BFE=665.83 I 1 1 ,' FFE=638.83 I / ( / / i r I I I LOT 21 FRONT LOAD FRONT LOAD I cL VARIABLE WIDTH I I P RKING" • , FFE=677.80 FFE=677.00 SWM FACILITY ESMT ' BFE=628.83 yD Vik SfREREP SIGN o 12,266 SF FFE=668.80 c \ / ` FRONT LOAD r' k �u I M C R8-3 FRONT LOAD FRONT LOAD ,�------/ I 1 NO PARKING" 0 / LIT SIGN ' I FFE-659.33 SLAB = MUTCD R8-3 PLANTI I i PLANTIN BRONT LOAD 0 \ 5' LANDSCAPING STR�L,l�IWF_ I0' NITARY TRIP i 'I ESMT. & SrDS EI M . ESM (TYP. I i M I I +c `'� - ) i ROPOSED ROW c SWM FOREST ' ' \ / _ a "NO !KIN CEMETERY ESMT. R i S S & ��- _ MT / PROPOSED W `- ' ' •� U D 8 � OPEN SPACE--- 1 \ / j \ �- I I 6' PLANTING > 1 LANDSCAPI G / GRAVEYARD LIMITS. - ------ STRIP NO URBANCE 2.37AC \ - // // \ I I LOT14 Ii EWAL 546 S F I "CEMETERY 13 FFE=649.60 I .• ACCESS" SIGN --�T(�`�.�/LOT 12 I ��ADDN MH 9N i�%/ / �ti /// / 12 271 SF I I BFE=640.60 , 10' CEMETERY ` �� FFE=639.40 I FRONT LOAD I I I ACCESS ESMT. �� END OF X. SAN. PIPE NEW TREELINE BFE=629.40 I ----- - - `\ �ji 13 I II �y I I 10' LANDSCAPINGJ FRONT LOAD 10392 SF ESMT.EX.LOT LDI EX. ------ FFE,=641.10 18' D VEWAY ACSA BUILDING W CG-9BFE=631.10 10' LANDSAPIMNTG. �TRANC�(TYP.) TW: 647.5 SAN. ESMT FRONT LOAD 44.0 D.B. 925 II f� PROPOSED ROW ' y11 LOT 20 \ I PG. 584 VARI4W WIDTH I I Y SWM FACILITY ESMT I I a TW: 648.5 zo' sANlr� `, 9,778 SF BW: 643.0 I I E v -�, � ESMT (TYP.) �\ �\` �\ \ ` I I I I I I Y ' I FFE=644.20 SEGMENTAL BLOCK I SLAB RET. WALL W. 42 L" I I / ERMIT \ - - - - I _ �- I ANDRAIL MAX H=5.5' NT TENT gTREAM\`� `` - "NO PARKING" I- - - - - �r - I - - - - - - - - - - - - - - - \ �; I 20' PUBLIC MUTCD R8-31 � y I � � DRAINAGE ESMT , q ; - / 20SANITARY - - - - T / / \ VARIABLE WIDTH TYP.) TW: 6 .0 \ O 3 _ , - „ ESMT ( / - - SWM FACILITY ESMT \ \\ ® \. ' , ` `\ I of m ¢ I I / EX. EX \� ESMT�NITARY a- BUILDING I I I / LOT 19 I I ' ACS I LOT 15 I 41 I FFt=64210 20 I rI / \ / � SAN. E� ,702 SF ' SLAB �\ \ S I 9 � 1 � I SEGMENTAl1 BQOC 25 / I D.B. 9I FFE=639.30 I RET. WALL W.14 " ' PRIVATE F PG. 584 I BFE=629.30 I I I HANDRAIL MAX H?7. ' 10/ �' I I FRONT LOAD �' ,-- ESMT DRAINAGE / I D NAGEPUBLICESMT o -- `I I II -------- - / 12 WTY 10LAND PING & SDEW K ESMT.`LOT 18 1 EX. SANITARYLOT -10 PLANTNG I I STRIP I R30.0 9,853 SF I I 1 I / ESMT 20' PUBLIC 11535 SF POSED RQ FFE=641.8010' PRIVATE DRAINAGE ACCESS ESMT FFE=639.60 ' SLAB DRAINAGE It/ �; � � � �, � BFE=629.60 � ' - _- _- - ESMT 1 - -- -- / 1 / EX. "NO PARKING" ,TW: 470�1 -�' / / / BUILDING MUTCD R8- - - - - - - -BW: 41°O I I ' I ' F \\\�\ EMOVABLE� Ii LOT 17 / I I / I oPos>,�ow BOLLARDS I 10 751 SF FFE=643.30 lw'643.0 / J ET -I -- -- -- -- -- -- -- -- '<_j 50' RO I - SLAB / I/ NEC I¢N Y Ro.. / NEW TREELINE 20' PUBLIC DRAINAGE & SWM - - - - _ -_ - - ----- ACCESS ESMT P / x� J TP GRID REINFOR D FIRE _ APPARATUS AD & PEDESTRIAN CON CTION 12.0 I _ I EX. SANITARY \ ESMT / \ ' I / 1 12.0 REMOVABLE I � I BOLLARDS/ R25.0 �� R25.0 --_ - 40 0 40 80 120 Scale: 1"=40' \ 0 0 N v w U Iz z w N N W w v W z w� z w� D N O N Q w� W (n J J_ zW W w z0 w _j Jib SHI11 P i. 45183 0H 10) i= N 0 cn O i N U N O (n O L L Q U r U Q O rn rn rn I� o00 O N N N a 00 N U-) CD O N O co O > N rl-) N Q Z r� V I� O LLL r Z � W Z D o p z U W 2 W Q J Z LPL W � m U) J Date 03/14/2019 Scale 1 40' Sheet Sheet No. C3 OF 16 File No. 17.014 OPEN SPACE � m PARCEL A ^� �' -- -- -- -- _ -- -/' •�' EW TREELINE oz I TMP 56-45A2 I I A REDUCED VIA BLA o SSMH i i / AGE ESMT I I m ' � I O \(le VARIABLE WIDTH SWM FACILITY ESMT 3:1 -- '� ' = 20' X 7' ACSA EASEMEMT ' 10' PRIVATE DB 4862 PG 565 VARIABLE WIDTH DRAINAGE ESMT SSMH i _ ��' �' i /' SWM FACILITY ESMT x r' ® BMP 4.39'66 DA ' 1.71 ac Imp 3 LOT 4 LOT 3 LOT 2 LOT 5 LOT 1 5" HOPE �_-- -- STORM ," LOT 6 40 > > LOT 7 Z. __- - m rrr j % A2 i 75 LF CLASS Al LOT 8 $ RIP -RAP. INSTALL �� \` n SAN. T. W/ EC-3 MATTING �' ' 20' PUBLIC ' ` C/0 (TYP ) m NEW TRFELINE''�LOT 9 iN UNDER RIP RAP. r-'' DRAINAGE \ J FOLLOW EX. f-�- ESMT -�\ \ SMALL TO CREEK ,� ' - — O SAN. LAT. W/ W PRIVATE =AGA I HA RIDGE L IN A7 � i o s C LAT. ESMT _ I 36_PUBLIC ROW — — I — '^• y —j —W5 MPHADT = 26 w _ —, I— o I = —w x c w W —w _ o — �w—w—w—lw— AR.l�W w—w— �' 20' PU�1Cr-r- LOT 10 �� ' — s _ CD -1 _ w w w _ i / qf ^ DRA4SAGE ESMT ` 20. N P� 5(OFM oo _W �w . _ _ _ w w w`� �W T tJ O/ \ \. WMN ACCESS P. _ _ — _ \ i / OPEN SPACE ��� '� \ ESMT i.°R� — IT]DRAINAGE ESMT 8" S R-26 AN. r t t� i \ PARCEL A \ £HOPE w s" SDR-26 N. of O 20' SANITA �41'�VARIABLE WIDTH 22% / M CD-1 / /— 20' SANITARY ESMT (TYP.) l' SWM FACILITY ESMT / M/ P / ES ACSA / M/ 1 50�✓ N. LAT. W/ 2 LOT 23 LOT 24 m C/0 NEW TREELINE ' �� �� / E / m y i 0D LOT 11 0°�= A>E I LOT 25 LOT 26 - `\ f�� I t �� w'' w � W T. ESMT I A O '1 1.3% a �� �� (TYP.) / / � I LOT 21 \ / ' VARIABLE WIDTH SWM FACILITY ESMT -- \ F m \ SA H , , / f I rkWd 2A BMP B % / J f x 3.96 ac DA / �aM i I r M I� ^. `� \- ------ 1.25 ac Imp ! / V. AC 1 LOT 14 Fvv I LOT 12 I o // / ` \\ •O\� / / f �� 9N ADD NE MH 9N TO m END OF X. SAN. PIPE ` NEW TREELINE / LOT 13 5'x1O' ACSA F I \j 1 / I I EX. WL ESMT (TYP.) " J / I llUILDING EX. SAN MH - SSOR / \`� E \ BUILDING I BrkWd-2-4 / / N - E2 N / `` I TW: 647.5344.0 ME — ARI KE WI TH f LOT 20 I I f 20SANITAR `SWM FAC11tl SMT �� TW: 648.5 \ 3 _ Ei-/ ` / / ESMT (TYP.) \-�` .` CDVI M BW: 643.0 21 I I �\ SEGMENTAL BLOCK I I I RET. WALL W. 42" I I ANDRAIL MAX H=5.5' loc LAT. W INV. SAN H — 20' PUBLIC I C TYP.) 638. 8X rkW -2-8 — — — — — — — — — — — — A r DRAINAGE ESMT I q 2C / — — ---- Z LF CLASS Al E -- - — - 0' S NITA ` - I A RY / RIP -RAP. INSTALL ` �T` f O o \- TO 3:1 3 / \ VARIABLE WIDTH — / EC-3 MATTING \ \ F� � o n ESMT (TYP.) TW: 6 7.0 SX - - SWM FACILITY ESMT \ �/ B2 1 I 3W: 69.51 UNDER RIP -RAP \ \� B1 � HDP STORM o ,6%, I / f Eh NSAN MH \\�\ `` ESMT EX ANITARY �1 \` ' B3 ` I Ia I ICI I / BUILDING Fw M �, LOT 19 / / I LOT 15 / x I SE ENT BOCK / SAN. LAT. W/ f f C/0 (TYP.) WALL W. 4 " 10' PRIVATE I � HANDRA AX H�>7. ' DRAINAGE / 9 B ESMT 5 I I CO Z HD E STOR z INV 12 HOPE D IN 636.2 0 A — — PUBLIC v 4 634.0 D INAGE ESMT _ O cI ------------------------------------------------------------------� I m 12' SWM FACILITY E I O ACCESS ESMT W LOT 18 \ ti� —1 I �o I � / � EX. SANITARY I o? / LOT 16 } / ACSA E Ic'I I I ESMT � \ 20' PUBLIC I � WL ESMT 10' PRIVATE nl g / r / / \ A I SS ESMT I 10% DRAINAGE ESMT / CONNECT TO D3 EX. / SANITARY MAIN \ I N M-M-M I WITH PIPE SADDLE Dl \ ` I _ RP4 RAP. INSTALL �M '� g �41� / / BUILDING / EC-,Z MATTING \ �� " HOPE STORM f ND R RIP- 21 LF CLASS Al RAP. INSTALL ING U LOT 17 .5 CONNECT TO 647.0 / L J — — — — — — — — — — — — — — — — — / SANITARY MAIN WITH PIPE SADD SAN. LAT. Q� W: 643.0 / ET \ / � 1 �� I I �= / / W/ C/0 7/ NEW TREELINE 2 I h / � — I- / 1 SAN 20' PUBLIC I� LF 1$ ORM ROOF — —�&kWd My -7 ' I DRAINAGE &SWM 6X IN ACCESS ESMT TP / o F / X TP ----- � �i SA MH-- _ -2-6 _ / EX. SANITARY / or ESMT / / i IN OUT: 2.64'51 \ 40 0 40 80 50 ROIY /8, Scale: 1 CLAUDUIS CROZET PARK 120 � 0 0 w N� Z I\ Z w N� N W �Z �z v W z w� z w� D N 0 N [\ N Q w� LJ J (n J_ i I W W w zo w_j � NQ w I m U Ju SHIMP ic. 45183 10 -11 R0) I� 0 cn OCn i N Q U � U Q co L I-N O O O O N N N a � N L n CD CDN O O O > N a> Q Z r� V O LLL Z � W Z O O z U W 2 W Q J Z LPL � W � m U J Q Date 03/14/2019 Scale 1 40' Sheet Sheet No. C4 OF 16 File No. 17.014 - -- _BUFF NEW TREELINE - , � I SSMH i SSMH / - �96IDAv yv v i 1.71 ac ImP \ 28�° \ 1 I I - ;7 _ _ = \=' � � \ LOT 5 / X28 5'.'� - ' ,' // / ' / ' ' / \ \ \ \� \ \\ FFE=664.85 3 / \ �,, /' / , - - - - _ r / LO� % \ \ FFE�658. \ FRONT LOA� S� 'i r / / - r ' .' / A v / v ( � _ _ _ _ _ _ - , , � I FRONT LOA I SLAB I /' __--- / \FFE=�53. \ \ SLAP A2 ' / rr v FvR�ONTvLOAf� vv v v vv vv 82 / -------/ / \\ \ SLA \\ \ \\ \\ I / LOT/� r/ v vv v 5 � v v / \ NEw TF.0Ne FFE=6648.33 A 90 BFE-638.33 \ 5 FFE=645.00 FRONT LOAD DITCH s // BFE=635,00 / I I - \ \ �� I FRONT -LOAD M ✓ \ ? \ - / - - TMP 56--45A2 / RPUKCED VIA BLA, = \ I MM ol - \ o / 1 o I \ \ _ \ m , I m I \ / ►T 4 -CV 1 = ' m LOT 3_ - - 12- _LOT - - FFE=676.38 � 60.55 FFE=674.50 FFE=675.74 FFRONA 66OD660.55 g I DNDc FRONT 66D � -FRONT LOAD - - - - ROUND 7605 7605 rpUnB o'I 75" 7 - - , 7300 6 72 / C V 72 e7 7 87 / / - - - 15 PI 0 / >6 m T \ T 6 14 ' > 6 9. LOCL� 5" N E • EGA l / / A�7 / f I ' /' / I o + +f 14+ VI I s t FFE=639.901 OPENSPACE ' ' /0 �� / / �RONT LCF PARCFL'A g17 S Prs 9.1 16 x ZZQL� \ LOIN 22 x V v V !'50 ' / / / of ���� >, I vv v vv vv v LO\T 23 �LbT 2 vv NEW TREELINE x t a1 P1T6 I ko �5 v�A I FFvE=665��3 v FF74.8-3 l v -LOT v25 LOT 2627 LOT11 BE=655.3 E=67\.� BF I - �1 v/ i' '/ � •/r, '� 'l / / / / / / / , • ,'.' a �/ / f ' � i'j�i- -� ---I// // / / // / o \\38"' 3A I I \-665.83 STA.L0�21 FRONT LOAD FFE660.63 FRONT LOAD \ \ \ \ i _ / W +38.31FRONT LOAD FFE=677.00F=83 -38 1 \ V \FE=67780 BFE=628.83 ss FFEE-668.80 LOADI � 1- FRONT LOAD o/FRONT LOAD 850 38 F , , BFE=6 9.33 \ \ SAN MH / �/ / �� / i , / / // / �ea \ V A v FRONTAD A \ \ i i , / 3 rkWd-2 / i ,i // / 45so v n a 1 o l V A \ (' x / x;� 1 �•� : ♦� � \\ x \ 4 rn 47 I + , �_ _ mac_ V ° A A` \� C i 18i� BMP� 18 7 A s J ' \ v v o ' � / I I / / 3.96 l3C DA CEMETERY ESMT. A� \ \ \\ 4 ?f ac Imp I 1 3907 \ \gg�\ LET 14 T COSTA. I � � \ \\ � \\ m 39 \ '0 On v vv -_ � �1 / it l� � \ � v � �/w �� v LOT 1 v 46 FFE-649.60 v �---- \ -BFE=640:60 --- vv v v �K,639.-_ FRONT LOADv' ���E#I TREELIN 1$- v v�29.4D V - -LOT 13 \ \ \ \ FRON OAD v - ��` v - 4 v g v ` " J`�v / B�JILDING EX. -=, R v\ v ' I ` BUILDING I" \ v v vSAN MH v v v FFE-641.10 v I v v v vv E2 \ \ � \ BFE=6-31.10 \ �, \ TW: 647.5 1- / \ \ \ BWd-2-� '� \ �� \ `\ x28' - ,FRONT L07�D - \ I I . \ \ \ 1 e7 44.0 x \ \ LOT 20 \ " \ \ II ti\�-�IAJNMK _TW: 648.5 002-3W: 643.0 43300 E F=644.20\ Sl Rl WALL W42\GMENTAL BLOCK 2:1 p hI ANDRA L MAX H=5�5' v 4200 'rd NO'- SX SAN MH - - - - - - - - - - - - - - E v A v A A \ 0 rkWd-2-8 I� s �- - I w �: 6 7.0 82 V " a 8.67 40T 41,V BI 611.5 \\ / 1 F SAN MH _ � � . v v � I � � \ � 33 � b� � I V A \ � � I I \ EX. BrkWd�2�5 ��\ \`� 1; \i 2 "( I 38 I, M �� °' ,'LOT 1� ) \\ I II `\ BUILDING 1'I i o LOT115FFE=642.10 o vv\ z i 97 / ' / / ) / / SLAB SEGMENTAL B9JCK I A - o 4' \ Fl 9.30 38 ' j ' ' / wRETI WALL W. 2" I E BFE=69.30 / / / 000 / q a° I FRONT OAD B � H�DRAiL MAX � 7 28 37 LPI as 9 / I 40 I E w 41 4 ct/ / x40 4110 x41102900 E ------------------------------- LOT 18 _ LOT/16 v 7 A\ 40" 80 FFE=b13 J.60 I 3870 to SLABv v z BFE=g29.60 \4047 \ �� 3 v 2:1 ^ EX. 29° . o - / 1 .. vv v 4110 vv v Buu 6470 --- BUILDING I 921 ,I��s \ \�OT 17 \\ I I 41D7 \\ \\ 647.0 I - / / \ FFE�643.30 -154T.' LT - I - - - - - - - - - - 4197 \ SLAB 'P43°x / / 80 I I I RD �� RD I I \ NEW TREELINE D2 \ 42� , I 7X / 7 3743'0 �v v SAN �-� 3 eo 39\,I erkwd-2-7 I X XX- \I P F TP / k� // / SAN MH/ 3 300 78 AD MINIMIZE ROOT DISTURIl \ ----- - - - - -- // AROUND FENCE WHILE / / � � � / // INSTALLING DITCH j 370' 7 r / SEE DETAIL 1/C12 / t 3800 / �' __ __--- vvv � ✓�`/ �� / � / � � INV OUT: 48 _ 642.64 CLAUDUIS CROZET PARK ----__ 48 vv `v ' 40 0 40 80 120 50, \ ' PAV MENT Scale: 1 "=40' I �, 1 \ t o v w N� IZ r Z w N� N W W Z Z v W v z OL �� zz w� D N O N [\ N Q w� L V J J_ I W w � W w zo W � N 0 w I m U Y J SHIMP ic. b 45183 �ohI 10) U) � cn O i N O o } U N O (n Q L L V U Q rn L D o00 O N N N O00NLn C� O (N O O O > N rl-) a� Z r� V LLL r Z � W Z O O z U W � W Q J Z � LL ` � W G U J Date 03/14/2019 Scale 1 "= 40' Sheet No. C5 OF 16 File No. 17.014 PROJECT DESCRIPTION, GENERAL NOTES, EROSION & SEDIMENT CONTROL NOTES, AND SEQUENCE OF CONSTRUCTION PROJECT DESCRIPTION THIS SITE IS A WOODED LOT OFF PARK ROAD ACROSS FROM THE CLAUDIUS CROZET PARK IN ALBEMARLE COUNTY BEING DEVELOPED INTO A SINGLE-FAMILY CLUSTER SUBDIVISION. THE TOTAL AREA OF DISTURBANCE IS 9.00 ACRES. THE PROJECT INVOLVES THE FOLLOWING WORK ACTIVITIES: 1. THE CONTRACTOR SHALL OBTAIN ALL LOCAL AND STATE EROSION AND SEDIMENT PERMITTING REQUIREMENTS AND MAINTAIN ALL EROSION AND SEDIMENT CONTROLS IN ACCORDANCE WITH THE PERMIT REQUIREMENTS. 2. INSTALLATION OF PERMANENT EROSION AND SEDIMENT CONTROL MEASURES AS SHOWN ON THE PLAN AND DETAILS. 3. GRADING AND PLACEMENT OF FILL SHALL BE IN GENERAL ACCORDANCE WITH THE PLAN. 4. ESTABLISHMENT OF PERMANENT STABILIZATION OF ALL DISTURBED AREAS. EXISTING SITE CONDITIONS THE EXISTING SITE IS 4 DEVELOPED SINGLE FAMILY LOTS WITH FOREST AND TURF ZONED R-2. ADJACENT PROPERTIES THIS PROPERTY IS BORDERED TO THE EAST, WEST, AND SOUTH BY SINGLE-FAMILY LOTS. PARK ROAD FORMS THE NORTHERN BORDER. OFFSITE AREAS: SOIL MAY NEED TO BE IMPORTED TO THE SITE FROM SITES WHICH SHALL HAVE EROSION CONTROL PERMITS. SOILS THE SITE CONTAINS THE FOLLOWING SOIL TYPES: 7B - BRADDOCK LOAM - 2 TO 7% SLOPES, HSG B, 17 - CRAIGSVILLE LOAM - HSG A 37C3 - HAYESVILLE LOAM - 7 TO 15% SLOPES, HSG B, SEVERELY ERODED 37D3 - HAYESVILLE LOAM - 15 TO 25% SLOPES, HSG B, SEVERELY ERODED CRITICAL AREAS THE CRITICAL AREA WITHIN THE SITE LIE WITHIN THE 100 FOOT STREAM BUFFER. CONTRACTOR SHALL ENSURE PROPER INSTALLATION AND MAINTENANCE OF PERIMETER CONTROLS ACCORDING TO THE PLANS TO PREVENT POLLUTANTS AND SEDIMENT FROM ENTERING THE STREAM. EROSION & SEDIMENT CONTROLS 1. SAFETY FENCE: A PROTECTIVE BARRIER INSTALLED TO PROHIBIT UNDESIRABLE USE OF AN EROSION CONTROL MEASURE. STD. AND SPEC. 3.01. 2. CONSTRUCTION ENTRANCE: INSTALL AND MAINTAIN A CONSTRUCTION ENTRANCE, AS NECESSARY, THAT MEETS THE REQUIREMENTS OF STD. AND SPEC. 3.02 AND CONFORMS WITH THE REQUIREMENTS OF THE EROSION & SEDIMENT CONTROL PLAN. 3. SILT FENCE: INSTALL AND MAINTAIN SILT FENCE THAT MEETS THE REQUIREMENTS OF STD. AND SPEC. 3.05. THIS SILT FENCE SHALL BE INSTALLED AS SHOWN ON THE EROSION & SEDIMENT CONTROL PLAN AND ACCOMPANYING DETAILS FOR THE PURPOSE OF INTERCEPTING SILT -LADEN RUNOFF BEFORE IT IS DISCHARGED FROM THE SITE. THE SILT FENCE SHALL BE INSPECTED AND MAINTAINED TO ENSURE CONTINUED PERFORMANCE. 4. TEMPORARY SEDIMENT TRAP: A SMALL PONDING AREA, FORMED BY CONSTRUCTING AN EARTHEN EMBANKMENT WITH A STONE OUTLET ACROSS A DRAINAGE SWALE, TO DETAIN SEDIMENT -LADEN RUNOFF FROM SMALL DISTURBED AREAS FOR ENOUGH TIME TO ALLOW MOST OF THE SUSPENDED SOLIDS TO SETTLE OUT. MAXIMUM EFFECTIVE LIFE IS 18 MONTHS. STD. AND SPEC. 3.13. TO BE CONVERTED INTO A PERMANENT DETENTION POND AT THE END OF CONSTRUCTION AS DETAILED. 5. TEMPORARY DIVERSION DIKE: A RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPING DISTURBED AREA WHICH DIVERTS SEDIMENT -LADEN RUNOFF TO A SEDIMENT TRAPPING STRUCTURE. MAXIMUM EFFECTIVE LIFE IS 18 MONTHS. STD. AND SPEC. 3.09. THE CLEANWATER DIVERSIONS WILL BE MADE STABLE BY THE USE OF VDOT LD-268 DESIGN STANDARDS. 6. TEMPORARY SEEDING: TEMPORARY SEEDING SHALL BE APPLIED TO ALL DENUDED AREAS WITHIN SEVEN (7) DAYS TO DENUDED AREAS THAT MAY OR MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 14 DAYS. TEMPORARY SEEDING SHALL BE APPLIED IN CONFORMANCE WITH STD. AND SPEC. 3.31. 7. PERMANENT SEEDING: PERMANENT SEEDING SHALL BE APPLIED TO AREAS DELINEATED ON THESE PLANS WITHIN SEVEN (7) DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. PERMANENT SEEDING STABILIZES DISTURBED AREAS AND ENHANCES THE BEAUTY OF THE SITE. 8. MULCHING: APPLICATION OF PLANT RESIDUES OR OTHER SUITABLE MATERIALS TO THE SOIL SURFACE TO PREVENT EROSION AND FOSTER THE GROWTH OF VEGETATION. ORGANIC MULCHES (STRAW) HAVE BEEN FOUND TO BE THE MOST EFFECTIVE. 9. DUST CONTROL: CONDUCT DUST CONTROL OPERATIONS NECESSARY TO MET THE REQUIREMENTS OF STD. & SPEC. 3.39 AS REQUIRED TO CONTROL SURFACE AND AIRBORNE MOVEMENT OF DUST. 10.INLET PROTECTION: INLET PROTECTION MEASURES AROUNF THE NEW INLETS SHALL BE PROVIDED IN ACCORDANCE WITH STD. AND SPEC. 3.07. SILT FENCE, STRAW BALES OR TEMPORARY STONE APPLICATIONS SHALL BE APPLIED AS APPROPRIATE FOR CURRENT GRADE CONDITIONS. 11. OUTLET PROTECTION: RIP -RAP SHALL BE PROVIDED AT THE OUTFALL OF CONVEYANCE CHANNELS, CULVERTS, AND STORM SEWERS IN CONFORMANCE WITH STD. AND SPEC. 3.18. OUTLET PROTECTION SHALL BE INSTALLED WITH ACCOMPANYING STORM SEWERS AND SHALL BE INSPECTED AFTER EACH RAINFALL EVENT AND REPAIRED IF NECESSARY. ANT SEDIMENT BUILD UP SHALL BE REMOVED. PERMANENT STABILIZATION AND SEQUENCE OF CONSTRUCTION THE FOLLOWING ARE THE PROPOSED MANAGEMENT STRATEGIES AND DETAILED SEQUENCE OF CONSTRUCTION: STAGE 1 1. INSTALL CONSTRUCTION ENTRANCE OFF PARK ROAD. TRUCKS SHALL BE CLEANED PRIOR TO LEAVING SITE. 2. INSTALL SILT FENCE, DIVERSIONS, AND SEDIMENT TRAPS. STAGE 2 CONTACT THE ENGINEER AND ALBEMARLE COUNTY FOR INSPECTION AND APPROVAL OF ALL E&S CONTROL MEASURES. STAGE 3 1. UPON APPROVAL OF E&S CONTROL MEASURES, BEGIN SITE WORK. 2. INSTALL STORM SEWER D1-D3 FIRST. 3. MAINTAIN PERIMETER CONTROLS UNTIL ROAD CONSTRUCTION IS COMPLETED AND SITE HAS ACHIEVED TEMPORARY STABILIZATION. 4. INSTALL ADDITIONAL CONTROL MEASURES AS SHOWN ON SHEET C8. 5. AS STORM STRUCTURES ARE CONSTRUCTED, INSTALL INLET AND OUTLET PROTECTION. STAGE 4 1. AS AREAS ARE BROUGHT TO GRADE, APPLY MULCHING, TEMPORARY SEEDING AND PERMANENT SEEDING. 2. ESTABLISH AND MAINTAIN PERMANENT STABILIZATION, INCLUDING VEGETATION OF ALL SLOPES AND GRASSED AREAS. 3. AFTER COMPLETION OF STORM SEWER INSTALLATION AND SITE STABILIZATION, CLEAN OUT ANY SEDIMENT BUILDUP IN THE STORM SEWERS. 4. INSTALL BIOFILTERS A & B. 5. WHEN SITE HAS REACHED STABILIZATION, REMOVE PERIMETER CONTROLS. CONSTRUCTION MAINTENANCE THE FOLLOWING CONSTRUCTION MAINTENANCE PRACTICES SHALL BE FOLLOWED AT THE SITE. 1. ALL E&S CONTROL MEASURES WILL BE CHECKED DAILY AND AFTER EACH SIGNIFICANT RAIN EVENT. ALL DEFICIENCIES IDENTIFIED DURING THESE INSPECTIONS SHALL BE CORRECTED AS SOON AS PRACTICABLE. 2. THE SILT FENCE BARRIER SHALL BE REGULARLY CHECKED FOR UNDERMINING, DETERIORATION OR SIGNIFICANT EROSION. SEDIMENT SHALL BE REMOVED AFTER EACH STORM EVENT AND WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHES HALF THE HEIGHT OF THE CONTROL. 3. THE CONTRACTOR IS RESPONSIBLE FOR ADHERING TO ALL MAINTENANCE REQUIREMENTS SET FORTH IN THE CURRENT EDITION OF THE VIRGINIA SEDIMENT AND EROSION CONTROL MANUAL, OTHER APPLICABLE COMMONWEALTH OF VIRGINIA REGULATIONS AND THE PROJECT SPECIFICATIONS. 4. ALL SEEDED AREAS WILL BE REGULARLY CHECKED TO ENSURE THAT A GOOD STAND OF GRASS IS MAINTAINED. 5. AREAS WITH RIP -RAP SHOULD BE REGULARLY INSPECTED TO DETERMINE IF HIGH FLOWS HAVE DAMAGED THESE CONTROLS OR CAUSED EXCESSIVE SEDIMENT DEPOSITION. ALL AREAS SHALL BE MAINTAINED IN ACCORDANCE WITH THE REQUIREMENTS OF THIS E&S CONTROL PLAN. ENVIRONMENTAL CONTROLS 1. CONTRACTOR SHALL PROVIDE AND MAINTAIN ALL ENVIRONMENTAL CONTROL MEASURES SO AS TO COMPLY WITH LOCAL ORDINANCES, STATE AND FEDERAL LAWS AND REGULATIONS APPLICABLE TO WATER POLLUTION IN WATERS OF THE STATE AND IN INTERSTATE WATERS. 2. CONTRACTOR SHALL MINIMIZE THE POTENTIAL FOR AIR POLLUTION BY THE USE OF EMISSION CONTROL EQUIPMENT ON CONTRACTOR OPERATED EQUIPMENT, SHUT -DOWN OF MOTORIZED EQUIPMENT WHEN NOT IN USE, AND ACTIVELY CONTROLLING DUST EMISSIONS THROUGHOUT THE PROJECT. EROSION & SEDIMENT CONTROL PERMITTING CONTRACTOR SHALL BE RESPONSIBLE FOR OBTAINING ALL LOCAL AND STATE EROSION AND SEDIMENT CONTROL PERMITS AND MAINTAINING ALL EROSION AND SEDIMENT CONTROLS IN ACCORDANCE WITH THE PERMIT REQUIREMENTS. GENERAL NOTES 1. THE INFORMATION AND DATA SHOWN OR INDICATED WITH RESPECT TO THE EXISTING UNDERGROUND UTILITIES AT OR CONTIGUOUS TO THE SITE ARE BASED ON INFORMATION AND DATA FURNISHED TO THE OWNER AND ENGINEER BY THE OWNERS OF SUCH UNDERGROUND FACILITIES OR OTHERS. THE OWNER OR ENGINEER SHALL NOT BE RESPONSIBLE FOR THE ACCURACY OR COMPLETENESS OF SUCH INFORMATION OR DATA. THE CONTRACTOR SHALL HAVE FULL RESPONSIBILITY FOR CONFIRMING THE ACCURACY OF THE DATA, FOR LOCATING ALL UNDERGROUND UTILITIES, FOR COORDINATION OF THE WORK WITH OWNERS OF SUCH UNDERGROUND UTILITIES DURING CONSTRUCTION, FOR THE SAFETY AND PROTECTION THEREOF AND REPAIRING ANY DAMAGE THERETO RESULTING FROM THE WORK. ALL OF THESE CONDITIONS SHALL BE MET AT NO ADDITIONAL COST TO THE OWNER. THE CONTRACTOR SHALL CONTACT "MISS UTILITIES" OF VIRGINIA AT 1-800-552-7001 PRIOR TO THE START OF WORK. 2. WHEN WORKING ADJACENT TO EXISTING STRUCTURES, POLES, UTILITIES, ETC., THE CONTRACTOR SHALL USE WHATEVER METHODS THAT ARE NECESSARY TO PROTECT STRUCTURES FROM DAMAGE. ANY DAMAGE CAUSED BY THE CONTRACTOR OR ITS SUBCONTRACTORS SHALL BE THE CONTRACTOR'S SOLE RESPONSIBILITY TO REPAIR OR REPLACE. THIS EXPENSE IS THE CONTRACTOR'S RESPONSIBILITY. 3. REPLACEMENT OR REPAIR OF DAMAGED STRUCTURES SHALL BE AT THE CONTRACTOR'S EXPENSE. 4. THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROTECTING ALL EXISTING SITE STRUCTURES FROM DAMAGE AND COORDINATING WORK SO THAT THE OWNER CAN MAKE NECESSARY ARRANGEMENTS TO MODIFY/PROTECT EXISTING STRUCTURES FROM DAMAGES. 5. THE CONTRACTOR SHALL BE RESPONSIBLE FOR NOTIFYING ALL UTILITY OWNERS, ADJACENT LAND OWNERS WHOSE PROPERTY MAY BE IMPACTED AND THE VIRGINIA DEPARTMENT OF TRANSPORTATION PRIOR TO COMPLETING ANY OFF -SITE WORK. 6. CONTRACTOR SHALL NOTIFY AND COORDINATE ALL WORK INVOLVING EXISTING UTILITIES WITH UTILITY OWNERS, AT LEAST 72 HOURS PRIOR TO THE START OF CONSTRUCTION. 7. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR THE CONSTRUCTION INDUSTRY (29 CFR PART 1926). 8. THE CONTRACTOR SHALL VERIFY THE LOCATIONS OF ALL BOUNDARIES, BUILDINGS, VEGETATION, AND OTHER PERTINENT SITE ELEMENTS. CONTRACTOR SHALL IMMEDIATELY REPORT ANY DISCREPANCIES BETWEEN EXISTING CONDITIONS AND CONTRACT DOCUMENTS TO THE OWNER AND ENGINEER. 9. CONTRACTOR SHALL SUBMIT FOR THE APPROVAL OF THE OWNER SUBMITTALS OF ALL SPECIFIED MATERIALS LISTED IN THE PLANS, TO INCLUDE SHOP DRAWINGS, MANUFACTURER'S SPECIFICATIONS AND LABORATORY REPORTS. THE OWNER'S APPROVAL OF SUBMITTALS WILL BE GENERAL AND WILL NOT RELIEVE THE CONTRACTOR FROM THE RESPONSIBILITY OF ADHERENCE TO THE CONTRACT AND FOR ANY ERROR THAT MAY EXIST. 10. CONTRACTOR SHALL BE RESPONSIBLE FOR OBTAINING ALL NECESSARY PERMITS, INSPECTIONS, BONDS, AND OTHER RELATED ITEMS IN ACCORDANCE WITH LOCAL AND STATE POLICY. STORMWATER MANAGEMENT: 1. ALL ONSITE RUNOFF SHALL BE ROUTED INTO EXISTING STREAM CHANNELS AT RATES THAT COMPLY WITH 9VAC25-870-66-B(3). SINCE RUNOFF RATES MEETS THE ENERGY BALANCED EQUATION, NO DOWNSTREAM ANALYSIS IS REQUIRED. 2. ONSITE RUNOFF SHALL BE MANAGED USING BIOFILTRATION SYSTEMS. 3. WATER QUALITY WILL BE ADDRESSED BY A COMBINED USE OF 2 VRRM COMPLIANT BIOFILTRATION BMP'S THAT REMOVE NUTRIENTS AND REDUCE RUNOFF PER 9VAC25-870-65. 4. 2.37 ACRES OF SWM FOREST AND OPEN SPACE SHALL BE DEDICATED AS PART OF THE SWM STRATEGY. THE SWM FOREST AND OPEN SPACE EASEMENT IS SUBJECT TO THE GUIDANCE SET FORTH BY THE DEQ IN THE VIRGINIA STORMWATER MANAGEMENT PROGRAM. THE AREAS WILL REMAIN IN A NATURAL VEGETATIVE STATE, EXCEPT FOR ACTIVITIES AS APPROVED BY THE LOCAL PROGRAM AUTHORITY, SUCH AS FOREST MANAGEMENT, CONTROL OF INVASIVE SPECIES, REPLANTING AND REVEGETATING, PASSIVE RECREATION (E.G. TRAILS), AND LIMITED BUSH HOGGING TO MAINTAIN DESIRED VEGETATIVE COMMUNITY (BUT NO MORE THAN 4 TIMES A YEAR). 1. BMP A IS A LEVEL 1 VRRM COMPLIANT BIOFILTRATION BASIN WITH A CDA OF 4.30 ACRES. IT IS LOCATED AT COORDINATES 38.062030,-78.696083. BMP A DESIGN VOLUME=TV=7,777 CF DEPTH OF STONE=5.0' DEPTH OF MEDIA=2.0' PONDING DEPTH=11.64" MEDIA AREA=2,400 SF TREES IN BIOFILTER=20 SURFACE COVER: HARDWOOD MULCH PRETREATMENT WAS DESIGNED TO HOLD 15% OF TV = 1073 CF. 2. BMP B IS A LEVEL 1 VRRM COMPLIANT BIOFILTRATION BASIN WITH A CDA OF 3.97 ACRES. IT IS LOCATED AT COORDINATES 38.061515,-78.695177. BMP B DESIGN VOLUME=1 xTV=6,258 CF DEPTH OF STONE=3.0' DEPTH OF MEDIA=3.0' PONDING DEPTH=7.08" MEDIA AREA=2,700 SF TREES IN BIOFILTER=24 SURFACE COVER: HARDWOOD MULCH PRETREATMENT WAS DESIGNED TO HOLD 15% OF TV = 1,521 CF. BIOFILTER INSTALLATION NOTES 1. CONSTRUCTION OF THE BIORETENTION AREA MAY ONLY BEGIN AFTER THE ENTIRE CONTRIBUTING DRAINAGE AREA HAS BEEN STABILIZED WITH VEGETATION. IT MAY BE NECESSARY TO BLOCK CERTAIN CURB OR OTHER INLETS WHILE THE BIORETENTION AREA IS BEING CONSTRUCTED. THE PROPOSED SITE SHOULD BE CHECKED FOR EXISTING UTILITIES PRIOR TO ANY EXCAVATION. 2. THE DESIGNER AND THE INSTALLER SHOULD HAVE A PRECONSTRUCTION MEETING, CHECKING THE BOUNDARIES OF THE CONTRIBUTING DRAINAGE AREA AND THE ACTUAL INLET ELEVATIONS TO ENSURE THEY CONFORM TO ORIGINAL DESIGN. SINCE OTHER CONTRACTORS MAY BE RESPONSIBLE FOR CONSTRUCTING PORTIONS OF THE SITE, IT IS QUITE COMMON TO FIND SUBTLE DIFFERENCES IN SITE GRADING, DRAINAGE AND PAVING ELEVATIONS THAT CAN PRODUCE HYDRAULICALLY IMPORTANT DIFFERENCES FOR THE PROPOSED BIORETENTION AREA. THE DESIGNER SHOULD CLEARLY COMMUNICATE, IN WRITING, ANY PROJECT CHANGES DETERMINED DURING THE PRECONSTRUCTION MEETING TO THE INSTALLER AND THE PLAN REVIEW/INSPECTION AUTHORITY. 3. TEMPORARY E&S CONTROLS ARE NEEDED DURING CONSTRUCTION OF THE BIORETENTION AREA TO DIVERT STORMWATER AWAY FROM THE BIORETENTION AREA UNTIL IT IS COMPLETED. SPECIAL PROTECTION MEASURES SUCH AS EROSION CONTROL FABRICS MAY BE NEEDED TO PROTECT VULNERABLE SIDE SLOPES FROM EROSION DURING THE CONSTRUCTION PROCESS. 4. ANY PRE-TREATMENT CELLS SHOULD BE EXCAVATED FIRST AND THEN SEALED TO TRAP SEDIMENTS. 5. EXCAVATORS OR BACKHOES SHOULD WORK FROM THE SIDES TO EXCAVATE THE BIORETENTION AREA TO ITS APPROPRIATE DESIGN DEPTH AND DIMENSIONS. EXCAVATING EQUIPMENT SHOULD HAVE SCOOPS WITH ADEQUATE REACH SO THEY DO NOT HAVE TO SIT INSIDE THE FOOTPRINT OF THE BIORETENTION AREA. CONTRACTORS SHOULD USE A CELL CONSTRUCTION APPROACH IN LARGER BIORETENTION BASINS, WHEREBY THE BASIN IS SPLIT INTO 500 TO 1,000 SQ. FT. TEMPORARY CELLS WITH A 10-15 FOOT EARTH BRIDGE IN BETWEEN, SO THAT CELLS CAN BE EXCAVATED FROM THE SIDE. 6. IT MAY BE NECESSARY TO RIP THE BOTTOM SOILS TO A DEPTH OF 6 TO 12 INCHES TO PROMOTE GREATER INFILTRATION. 7. PLACE GEOTEXTILE FABRIC ON THE SIDES OF THE BIORETENTION AREA WITH A 6-INCH OVERLAP ON THE SIDES. IF A STONE STORAGE LAYER WILL BE USED, PLACE THE APPROPRIATE DEPTH OF #57 STONE ON THE BOTTOM, INSTALL THE PERFORATED UNDERDRAIN PIPE, PACK #57 STONE TO 3 INCHES ABOVE THE UNDERDRAIN PIPE, AND ADD APPROXIMATELY 3 INCHES OF CHOKER STONE/PEA GRAVEL AS A FILTER BETWEEN THE UNDERDRAIN AND THE SOIL MEDIA LAYER. IF NO STONE STORAGE LAYER IS USED, START WITH 6 INCHES OF #57 STONE ON THE BOTTOM, AND PROCEED WITH THE LAYERING AS DESCRIBED ABOVE. 8. OBTAIN SOIL THE MEDIA FROM A QUALIFIED VENDOR, AND STORE IT ON AN ADJACENT IMPERVIOUS AREA OR PLASTIC SHEETING. AFTER VERIFYING THAT THE MEDIA MEETS THE SPECIFICATIONS, APPLY THE MEDIA IN 12-INCH LIFTS UNTIL THE DESIRED TOP ELEVATION OF THE BIORETENTION AREA IS ACHIEVED. WAIT A FEW DAYS TO CHECK FOR SETTLEMENT, AND ADD ADDITIONAL MEDIA, AS NEEDED, TO ACHIEVE THE DESIGN ELEVATION. 9. PREPARE PLANTING HOLES FOR ANY TREES AND SHRUBS, INSTALL THE VEGETATION, AND WATER ACCORDINGLY. INSTALL ANY TEMPORARY IRRIGATION. 10. PLACE THE SURFACE COVER IN BOTH CELLS (MULCH, RIVER STONE OR TURF), DEPENDING ON THE DESIGN. IF COIR OR JUTE MATTING WILL BE USED IN LIEU OF MULCH, THE MATTING WILL NEED TO BE INSTALLED PRIOR TO PLANTING (STEP 9), AND HOLES OR SLITS WILL HAVE TO BE CUT IN THE MATTING TO INSTALL THE PLANTS. 11. INSTALL THE PLANT MATERIALS AS SHOWN IN THE LANDSCAPING PLAN, AND WATER THEM DURING WEEKS OF NO RAIN FOR THE FIRST TWO MONTHS. FINAL BMP INSPECTION CHECKLIST ❑ CONTRIBUTING DRAINAGE AREAS HAVE BEEN ADEQUATELY STABILIZED WITH A THICK LAYER OF VEGETATION AND EROSION CONTROL MEASURES HAVE BEEN REMOVED. ❑ VERIFY THE PROPER COVERAGE AND DEPTH OF MULCH, VEGETATION, OR SOIL MATTING HAS BEEN ACHIEVED FOLLOWING CONSTRUCTION, BOTH ON THE FILTER BED AND THE SIDE -SLOPES. ❑ INSPECT THE PRE-TREATMENT FORBAYS AND FILTER STRIPS TO VERIFY THAT THEY ARE PROPERLY INSTALLED, STABILIZED, AND WORKING EFFECTIVELY BEFORE OPENING THE FACILITY TO RUNOFF. ❑ CHECK THAT OUTFALL PROTECTION/ENERGY DISSIPATION MEASURES AT CONCENTRATED INFLOW AND OUTFLOW POINTS ARE STABLE. ❑ FOLLOW-UP INSPECTION AND AS -BUILT SURVEY/CERTIFICATION HAS BEEN SCHEDULED. ❑ GPS COORDINATES HAVE BEEN DOCUMENTED FOR ALL INFILTRATION PRACTICES ON THE PARCEL. FIRST -YEAR BMP MAINTENANCE OPERATIONS SUCCESSFUL ESTABLISHMENT OF BIORETENTION AREAS REQUIRES THAT THE FOLLOWING TASKS BE UNDERTAKEN IN THE FIRST YEAR FOLLOWING INSTALLATION • INITIAL INSPECTIONS. FOR THE FIRST 6 MONTHS FOLLOWING CONSTRUCTION, THE SITE SHOULD BE INSPECTED AT LEAST TWICE AFTER STORM EVENTS THAT EXCEED 1 /2 INCH OF RAINFALL. • SPOT RESEEDING. INSPECTORS SHOULD LOOK FOR BARE OR ERODING AREAS IN THE CONTRIBUTING DRAINAGE AREA OR AROUND THE BIORETENTION AREA, AND MAKE SURE THEY ARE IMMEDIATELY STABILIZED WITH GRASS COVER. • FERTILIZATION. ONE-TIME, SPOT FERTILIZATION MAY BE NEEDED FOR INITIAL PLANTINGS. • WATERING. WATERING IS NEEDED ONCE A WEEK DURING THE FIRST 2 MONTHS, AND THEN AS NEEDED DURING FIRST GROWING SEASON (APRIL-OCTOBER), DEPENDING ON RAINFALL. • REMOVE AND REPLACE DEAD PLANTS. SINCE UP TO 10% OF THE PLANT STOCK MAY DIE OFF IN THE FIRST YEAR, CONSTRUCTION CONTRACTS SHOULD INCLUDE A CARE AND REPLACEMENT WARRANTY TO ENSURE THAT VEGETATION IS PROPERLY ESTABLISHED AND SURVIVES DURING THE FIRST GROWING SEASON FOLLOWING CONSTRUCTION. THE TYPICAL THRESHOLDS BELOW WHICH REPLACEMENT IS REQUIRED ARE 85% SURVIVAL OF PLANT MATERIAL AND 100% SURVIVAL OF TREES. ANNUAL BMP INSPECTION CHECKLIST IT IS HIGHLY RECOMMENDED THAT A SPRING MAINTENANCE INSPECTION AND CLEANUP BE CONDUCTED AT EACH BIORETENTION AREA. THE FOLLOWING IS A LIST OF SOME OF THE KEY MAINTENANCE PROBLEMS TO LOOK FOR: • CHECK TO SEE IF 75% TO 90% COVER (MULCH PLUS VEGETATIVE COVER) HAS BEEN ACHIEVED IN THE BED, AND MEASURE THE DEPTH OF THE REMAINING MULCH. • CHECK FOR SEDIMENT BUILDUP AT CURB CUTS, GRAVEL DIAPHRAGMS OR PAVEMENT EDGES THAT PREVENTS FLOW FROM GETTING INTO THE BED, AND CHECK FOR OTHER SIGNS OF BYPASSING. • CHECK FOR ANY WINTER- OR SALT -KILLED VEGETATION, AND REPLACE IT WITH HARDIER SPECIES. • NOTE PRESENCE OF ACCUMULATED SAND, SEDIMENT AND TRASH IN THE PRE-TREATMENT CELL OR FILTER BEDS, AND REMOVE IT. • INSPECT BIORETENTION SIDE SLOPES AND GRASS FILTER STRIPS FOR EVIDENCE OF ANY RILL OR GULLY EROSION, AND REPAIR IT. • CHECK THE BIORETENTION BED FOR EVIDENCE OF MULCH FLOTATION, EXCESSIVE PONDING, DEAD PLANTS OR CONCENTRATED FLOWS, AND TAKE APPROPRIATE REMEDIAL ACTION. • CHECK INFLOW POINTS FOR CLOGGING, AND REMOVE ANY SEDIMENT. • LOOK FOR ANY BARE SOIL OR SEDIMENT SOURCES IN THE CONTRIBUTING DRAINAGE AREA, AND STABILIZE THEM IMMEDIATELY. • CHECK FOR CLOGGED OR SLOW -DRAINING SOIL MEDIA, A CRUST FORMED ON THE TOP LAYER, INAPPROPRIATE SOIL MEDIA, OR OTHER CAUSES OF INSUFFICIENT FILTERING TIME, AND RESTORE PROPER FILTRATION CHARACTERISTICS. MINIMUM STANDARDS (MS): All applicable Virginia Erosion and Sediment Control Regulations and Minimum Standards shall be adhered to during all phases of construction. These include, but are not limited to the following: 1. STABLIZATION OF DENUDED AREAS: Permanent or temporary soil stabilization shall be applied to bare areas within seven days after final grade is reached on any portion of the site. Temporary soil stabilization shall be applied within seven days to denuded areas that may not be at final grade, but will remain dormant or undisturbed for longer than 30 days. Permanent stabilization shall be applied at areas that are to be left dormant for more than 1 year. 2. STABILIZATION OF SOIL STOCKPILES: During construction of the project, soil stockpiles shall be stabilized or protected with sediment trapping measures. The applicant is responsible for temporary protection and permanent stabilization of all soil stockpiles on site as well as soil intentionally transported from the project site. 3. PERMANENT VEGETATIVE COVER A permanent vegetative cover shall be established on denuded areas not otherwise permanently stabilized. Permanent vegetation shall not be considered established until a ground cover is achieve that, in the opinion of the county Inspector, is uniform and mature enough to survive to inhibit erosion. 4. TIMING & STABILIZATION OF SILT TRAPPING MEASURES: Sediment basins and traps, perimeter dikes, sediment barriers and other measures intended to trap sediment shall be constructed as a first step in any land disturbing activity and shall be made functional before upslope land disturbance takes place. 5. STABILIZATION OF EARTHEN STRUCTURES: Stabilization measures shall be applied to earthen structures such as dams, dikes and diversions immediately after installation. 6. SEDIMENT TRAPS AND BASINS: A sediment basin shall control surface runoff from disturbed areas that is comprised of flow from drainage areas greater than or equal to three acres. P 9 9 q The sediment basin shall be designed and constructed to accommodate the anticipated sediment loading for the land disturbing activity. The outfall device or system device shall take into account the total drainage area flowing through the disturbed area to be served by the basin. 7. CUT AND FILL SLOPES: Cut and fill slopes shall be designed and constructed in a manner that will minimize erosion. Slopes that are found to be eroding excessively within one year of permanent stabilization shall be provided with additional slope stabilizing measures until the problem is corrected. & CONCENTRATED RUN-OFF DOWN CUT OR FILL SLOPES: Concentrated runoff shall not flow down cut or fill slopes unless contained within an adequate temporary or permanent channel, flume, or slope drain structure. 9. WATER SEEPS FROM A SLOPE FACE: Whenever water seeps from a slope face, adequate drainage or other protection shall be provided. 10. STORM SEWER INLET PROTECTION: All storm sewer inlets that are made operable during construction shall be protected so that sediment -laden water cannot enter the conveyance system without first being filtered or otherwise treated to remove sediment. 11. STABILIZATION OF OUTLETS: Before newly constructed stormwater conveyance channels are made operational, adequate outlet protection and any required temporary or permanent channel lining shall be installed in both the conveyance channel and receiving channel. 12. WORK IN LIVE WATERCOURSES: When work in a live watercourse is performed, precautions shall be taken to minimize encroachment, control sediment transport and stabilize the work area to the greatest extent possible during construction. Nonerodible material shall be used for the construction of causeways and cofferdams. Earthen fill may be used for these structures if armored by nonerodible cover materials. 11CROSSING A LIVE WATERCOURSE: When a live watercourse must be crossed by construction vehicles more than twice in any six month period, a temporary stream crossing constructed of nonerodible materials shall be provided. 14. APPLICABLE REGULATIONS: All applicable federal, state and local regulations pertaining to working in or crossing live watercourses shall be met. 15. STABILIZATION OF BED AND BANKS The bed and banks of a watercourse shall be stabilized immediately after work in the watercourse is completed. 16. UNDERGROUND UTILITIES: Underground utilities shall be installed in accordance with the following standards in addition to other criteria: a.No more than 500 linear feet of trench may be opened at one time. b.Excavated material shall be placed on the uphill side of trenches c. Effluent for dewatering operations shall be filtered or passed through approved sediment trapping device, or both, and discharged in a manner that does not adversely affect flowing streams or offsite property. d.Material used for backfilling trenches shall be properly compacted in order to minimize erosion and promote stabilization. e.Restabilization shall be accomplished in accordance with these regulations. f. Applicable safety regulations shall be complied with. 17. CONSTRUCTION ACCESS ROUTES: Where construction vehicle access routes intersect paved public roads, provisions shall be made to minimize the transport of sediment by vehicular tracking onto paved surfaces. Where sediment is transported on to a public road surface, the road shall be cleaned thoroughly at the end of each day. Sediment shall be removed by shoveling or sweeping and transported to a sediment control disposal area. Street washing shall be allowed only after sediment is removed in this manner. This provision shall apply to individual lots as well as to larger land disturbing activities. 18. TEMPORARY E&S CONTROL MEASURE REMOVAL: All temporary erosion and sediment control measures shall be removed within 30 days after final site stabilization or after temporary measures are no longer needed, unless otherwise authorized by the local program authority. Trapped sediment and the disturbed soil areas resulting from the disposition of temporary measures shall be permanently stabilized to prevent further erosion and sediment. 19. ADEQUACY OF RECEIVING CHANNELS: Properties and waterways downstream from the development site shall be protected from sediment deposition, erosion and damage, due to increases in volume, velocity and peak flow rates of stormwater runoff for the stated frequency storm of 24-hour duration. 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USE INLET j / COI/TRACTOR SHALL -RROTECTION. / AVOID DESTROYING \ PFFSITE TREE ROOTS M 3.35 MULCH MU / / � / � DURING CONSTRUCTION / 1 3.39 DUST CONTROL DC SAFETY FENCING \ \ O SA 4 � SHALL DOUBLE AS � SAF TREE PROTECTION r, r, r, 3.01 SAFETY FENCE O FENCEING ALONG l ROW BOUNDARY ; TREE PROTECTION FENCING �� / � i JAMESTOWN RD / LIMITS OF DISTURBANCE _ r ENTRANCE SHALL OUT: BE CLOSED DURING INV — — •�, / L, `INV OU CONSTRUCTION , SEDIMENT TRAP DRAINAGE AREA 5o Rp a' 64 p CT SA > 4 / \ \ �50 ON 40 0 40 80 120 \ .,,, ,., � � Scale: 1 "=40' V LO 0 0 LO U IZ z v N W � Z Z v W v Z w� z w� \v1 IN N Q w W J _J V) I W W w I0 w � NQ w G) 0 Ju sf4i p > 1C. 0 45183 I `l 0 1� .LD W cn O L T o c� Z3 Cl v U Q (n L � t%I UW a Orn rn rn T_ � W (D CD D OT 1 0 Ln N LC) r�11 O � N 00 W 000 Q Z r— V LL L�L Z r W z 0 Q z U W � W Q J Z Q Q J C � G � W L U J > Q Date 03/14/2019 Scale 1 "= 40' Sheet No. C7 OF 16 File No. 17.014 ir�EV��i RMANE / / / / / / �100�ST_REAM�FFER i _ _ _fill O 2 i� ison m 1 J/ �/ \ p DI r(TYP/) / �/ �'� �_ SF 14 i 0 // MINIMIZE DISTURBANCE \ \ WITHIN BMP FOOTPRINT TMP56--45A2 — — —s' \ N w ►II�� — _ RPLIC'ED VIA B ^ z wA \ "J�// I I / I I I I r 1 / � \ Sao 50 ,— ► _ — � _ � � z � o / FU E T 1 I i I , _ Z o I W `y 3:1 / co -ST4. 9RY - — \ 1 W ONBASEMENT I I v / / / / ` \ 5685 o [� fll / / / /DRAIN A AP U, 0 E TU-REI"N` � AREA SH WN OCCUPIED AND ' O N // UNDISTURBED DURING m , / \ SSMH - J:, / // / / — 30_ \ I \ I S A \ I I I / / / TEMPORg{2Y LIMITS MASS GRADING > \ ® CRITICAL ,��� �- ,' /' / r r' �/30 / ,^ \ \ \ \ _ �1 AREA / �/ / , -/ ''\ \ T I IS I I / I / w / 7 I ! 4 A m �� T \ B I D I \ I I I / / / LOT 4 EOT (Cl — — -COT 2- — LOT _ > I (n NEW HOUSE / ��`���-, / / ► / / /r / `�/ / — / /� — o�y� / ' S \ \ \\ L0� \ \ \ ' j �9 'LOCATIONS — — \ ���� / 'i / I l / l / .t� / ( / / `�/ d 2 \ \ \ \ \ \ I ♦ I / i° _ SHOWN FOR _ s> \ � REFERENCE \ \ rn \ \ \ I SF LOT 8✓' ` \ o \ 5 \ \\ \ I I /� // - _ - \ 01 CPF —j' GA ARID 676 I \ E LA \ MINIMIZE DISTURBANCE _ �/ \ / ( c1 c2 ' ` ', \ ► 1 ' ' ► / 3s \�UBLI --/—\ I I I — / 25 MPI�AD WITHIN BMP FOOTPRINT .' / _ , / -� I I _ - I� -W w -W W -W��W - W W _W _W /F�'!'r�rr1LOTi10 `J , / C�—�w w m W w �W \ —W W —W —W W —W 11 a7 �Lllllflr r W W w W I FTC �3 1 O 45183 OPEN SP/E PARCV A / h ; / J , / 1 M I , iw g \ \ \ \ 1ARi 1 f \d, r/ ,, /� \ � M � / _o \ \ \ NE S \ \\ 1 1 \ �I i ♦ '` ' S W ° EX. WATERLINE I 23 L022 \ \ \\ ' 1\ s / M/ A \� I `� i I \\ \ \ LC`�T \ , Lb.T 241 \ / \ _ CLAUDUIS CROZET PARK LQ ,� l /!titi ��f / l �. ° I � \ 1 \ \ ` \\ `\ \\ � � �i9T 25 LOT 26 - \00pr' / 'l ' / / ' / / / I I l l W /�° \ 1 \ \\ \ V v \\ vv \ v W LOl` 21 \ \ \ \\ \ \ \ \ \\ 0 \ S EW IDE F \ I \ \ \ \ ) \\ \ o —/ 1 TS C14 , / ro I \ \ \ �I I \ \ \ \ \ \ \\ rkwd - �I / / / / -'� / '/ /'' � // / 3 7 r / I / %I 2A \ \ \ \ \\ / °� qI I I \\ \ \ \ \ \\ \ I I -on s \ \ \ \ \6 \ I o O / \ \\ I ! \ \ NE HOUSE\\ o /6 \ m O cn D�0 NOT INSTA I \ \ \ \ \\ \ _ — I / NEW ` \\ L CA Ns I I > >A o o o n 1 A4 I SHH WN FOR M,U TS S 8 - _ w c� cn BMP S UNTIL I \ ` \ \ s L _ ,� I t \ \ \ \\ F Dq_ I MH \ \ o nT 14 4 REFE�{2E E \t D 14 > `1`A$ILIZED 5 7 1 — —T_ \ \ \ \ , - ♦ ` / \\\\�` \`\ \\\\\ \ \\\\ \\\\ \ \\ \ \ \ . \�\�\` \\ ---c- - -\-\-\-- - \ \ \ , zo 2q\\\\\ • \\ \ \\ \\ \ \ \ \\\ \\ \ \ R S` \'\ \ ♦ \` " \ \ III Je\ LOT 13 rAEX. 0 ILDING EX. \\ 'SAN MH BUILDING I \\\ \�8\ \ \ ��FRE TM TONE \\\ \ \ � \ \ S LOT 20 \ \ \ \ I - ` III I O rn O 1� \ \ \ \ zo \ \ �L D\At61TR \ �� \ �. n —\ \ I / —�I f O O O \ \ RI �NNN 4x \ \ io \'\\ \�1 ---�. \\\ \ \\ \ \62e \ f p_ \ \ \ \ 1 \ I f O O CCV \ I \ +� \ \ \♦ \ \INSTALL 40 F-9F \ m TS \ \ \ \ \ LOT BOUI�I�ARY \ \ 21 1 CWD \ I 00 00 \4�PLYWOOD AFFL w 7 \ \ I 'o `\ \\ —( P.)\ \ \ �o l• I \ [� 0 0 0 ' NMITT y\ — \ \ \\ \\ ' ?R 1♦\ BEFORE — ARE LOR �'►'S; INSTALL 9 I \ SAN H SOIL EROSION & SEDIMENT CONTROL SYMBOLS W j_ f �� \\ \ CRITICAL \\\ . \\ \ \�\ ` I \ — \ 1 \ \ \ 14 ax rkw -z-8 > AREA \I � 13:, \ F� 3 2 ► SYMBOL N 0, TITLE KEY N / / \ 5x 8.6% Q \/ \\SAN MH \ `\ \ , , 1p \ I I B3 O m = \ I \ \ \ I E / Bak - <5 \� \\� \\ :\ `(/ ' I w z- \ 'LOT 1 \ \ I I r\\ / BUIL / LOT' 15 I ` 4.9% , , / I , , 3.02 CONSTRUCTION ENTRANCETP CE 3' P7 1 I / 3.03 CONSTRUCTION ROAD STABILIZATION CRS 1p \\ I ► C \\\ \\ LO 18 c1 /I \ % D � x x x x 3.05 SILT FENCE SF � I I LOT/�(b 3.07 INLET PROTECTION IP _ v O 10 \ �� 1 / I 3.09 TEMPORARY DIVERSION DIKE 0 / NOTE: INSTAL STORM MANHOL _ _, / I F C8--- RS DD\ B2 AFTER/SEDIMENT TRAP IS CWD 1 10 i I I \ \ II 3.11 RIGHT-OF-WAY DIVERSION w� L REMOVED// STORM SEWERS SHALL OT 1 I \ Z r / DRAIN TO TRAP UNTIL MANHOLE - � .� \ z IS INSTALLED. ,' ram, �\ - ' 1` \ 1C / --, 1 �ETt -' - - - - - - — CLEAR WATER DIVERSION cwD W — ► — \\ / / [DRAWN TO SCALE] 3.13 TEMPORARY SEDIMENT TRAP ST G 9 1 7x / L J O / , / , — — —► O \ SAN \ / CWD 2 I 3.18 OUTLET PROTECTION Z 14 PF SAN MTP -6 W U W 3.31 TEMPORARY SEEDING TS Q J /w EX. SAN SEWER CO TRACTOR SHALL TYP. i PS 3.32 PERMANENT SEEDING PS Z AVID DESTROYING ( ) O OIL SITE TREE ROOTS / MULCH 3.35 MU \ DURING CONSTRUCTION M O J 3.39 DUST CONTROL DC W 3.01 SAFETY FENCE SAF / 1 O TREE PROTECTION FENCING i 14 LIMITS OF DISTURBANCE Date t / 1 INV OUT: — — 03 14 2019 SEDIMENT TRAP DRAINAGE AREA �, 642.64 / Scale _ _ 12 — — - - -- 50' R e 40 0 40 80 120 Sheet No. / 8 PAVEMV \ uoN Scale: 1"=40' C8 OF 16 File No. .,,, ,., / 17.014 ol ice'/ + + + + +/+ + + +, SEA BUFFEF_ NEW TREELINE� SSMH- \ 0 / / I P ,I + / / LIMITS OFOP �// / / / /' 11 1 + \� + / DISTURBANCE _ — BUFFER AREA DISTURBED: \ � � / R PLAN��(NG / / � I I II \�+ � / � 0.88 AEA I � ; I i� � + +I� MITIG IT /+ / �� / 1 t / • \ ''�' I /►`�+� + + I ti / / / MITIG + + I I rn / / — / PLANT +�/ + + + + I I ' I / / CONTA \ SSMH - _�' // /' / + /+ + �i + + + /T+ �+� + �\ �\ \ I 100' STREAM' 1 I I I / MITIG + \ \ I BUFFER I I % / 1 LF > + \ /+ + \ \ I / \ \ � � MITIG /+ / / \ \ \ \ \\ \ I� / SPLIT DIS URBE ' / / —� / / \ \\ \ \\ \\ \ \ \ \ I / QP LACK BUFFER / ___— ---- / I I \ \ \ \ \ I I / 17,80 AREA I ' + SHALL \ I ---- �" / ACSA NEW I ,I-fi - +� + + + I / — — //\\ \ \ \ \ \\ I I BUFF / + + + + I / \ 1 1 1 \ \ \ \ / ,. PLANT / � I �+ + + I / 11 1 1 \ \ y \ TUBES + + + + + + i , j ' / / / \ / / I \\ \ 1 1• \ ALBEM 3 + + + GA ARID E LI VERIFY + + 4- / I I 1 / I \ \ \ 36 PUBLI ROW + + I I I , I / 0 1 1 3 \ I \\ \\ \\ \ EARTH + - / - - / \ 1 1 I ; \ w w — 25 MPH\ AD = 26 + + + I I I _ 1 I \ \ w w —w w - PLANT �+ + + + + !� I I I I I I — �_ + + +/ w\\ \ + + + + + + + +NN + + + +1 + ��+ + / NEW/ TR LINE(' + , + + / , 1 I / /+ + + // I i I� \ + ' PLANTING I \ \ ,� \ ` AREA/ �-- / \\ I I / Of- + / \ NO TREES IN + I+ / \ SAN. EIMT. \ \ + +�+ + + \ \ \\ / \ \ V A \ V v + + + +� \ 14EW TRIEELIN \ ` \ ft +100' S AM 1 SET TRUNK PLUMB. SEE CL \ + H + + + {_ \ \ �U FFER \ \ \ I z \ \ / \ PLANS FOR EXACT LAYOUT i + + + + + ��� \ � �� ��� \\ - ^� \ I , \\ AND SPACING. \ \ ` + + \ H + + 1 + I� + + + + + + + + + -+ + + �+ + + N TI N G \ \ \ �, \ \ '\ \ ` - - \ \ \ \ TREE TIES, SEE SPECS. -_ + + + + AEA\ \ + + + + + + + \ \ \ \ \ \ \ \ \ \ \\ 1-1/2" SQ. OAK STAKES SET 180 DEGREES + + +\\�{- + + \ \\ � \ \\\ \ � I \\ � � \�� ` \ \1 APART INTERMITTENT \ \ \ \ \ \ \ \ \ - - - \ STREAM \ + �\ + \ \ \ I \ I \ \ FINISHED GRADE / NO TREES IN + + \� o\r I II 1 \\ \\ SAN. ESM T. I I + + + + i \ \ \ \ \ h Z CL,U o I \ \ APPLY 2" OF MULCH AFTER \ \ \ \ \ I I \ \ > I m ¢ ` I I \ \ \ o PLANTING AND WATER THOROUGHLY \ \ I I 4" COMPACTED EARTH + WATERING BERM +' EXISTING GRADE L I / _ 1 \ - - \ �'•STRE�AM \\ �I + + / I \ II ' //I / / ,' /� I \ 1 PLANTING PIT. SEE SPECS FOR + + + \ �M_ J I \ I EXACT REQUIREMENTS, PLANTING \ \ BJ .+ + \ \ I / / / 'C + \ SOIL, AND PLANTING SOIL I I AMENDMENTS. CHANNEL RESTORATION: 4 + + REMOVE BURLAP &STRING CHA \ ` � \x + � I I / / / / / / I FROM TOP 1 /3 OF ROOT BALL 178 LF OF EXISTING � � ,+ � / I / , TWO TIMES ONSITE STREAM ,%` / / \� BALL DIA. MIN ( / UNDISTURBED SOIL ' CHANNEL TO BE \\ / —� / RESTORED. SEE SHEETS \\ / \\ I / i \ W-1 \ I \\ C10-C11 FOR DETAILS. � \ / / I I MAINTENA110E / G UNDCOVER �\ \ TREE PLANTING DETAIL DISTURBED AREA I / IN BUFFER (TYP.) Not To Scale , , _ I I I I I \ \ \\ \ LEGEND 100' BUFFER DISTURBANCE + + + + MITIGATION REPLANTING (INSIDE BUFFER) + + + CHANNEL RESTORATION TREE PROTECTION FENCING STREAM BUFFER PROPERTY/LOT LINE ACRES DISTURBED WITHIN 100' BUFFER ATION PLANTING CALCULATIONS: 7,848 SF (0.87 AC) AREA DISTURBED WITHIN STREAM BUFFER 7,800 SF (0.41 AC) APPLIED MITIGATION AREA FROM 178LF CHANNEL RESTORATION 0,048 SF (0.46 AC) REMAINING DISTURBED AREA WITHIN BUFFER 0,096 SF (0.92 AC) REQUIRED 2:1 RATIO REPLANTING AREA 0,100 SF (0.92 AC) AVAILABLE BUFFER REPLANTING AREA ATION OPTION A (SEEDLING PLANTING) REQUIREMENTS: 700 SEEDLINGS/ACRE @ 2:1 RATIO = 645 INER GROWN SEEDLINGS PLANTED WITH TREE TUBES. ATION OPTION B (CHANNEL RESTORATION) REQUIREMENTS: RESTORED CHANNEL PER 100 SF DISTURBED BUFFER ATION STRATEGY: MITIGATION OPTIONS. BOTH PLANTING AND CHANNEL RESTORATION SHALL BE EMPLOYED DUE TO OF PLANTING SPACE. 178 LF OF ONSITE STREAM CHANNEL SHALL BE RESTORED. THIS COVERS 0 SF OF BUFFER DISTURBANCE. THIS LEAVES A DISTURBED BUFFER AREA OF 20,048 SF WHICH BE MITIGATED WITH SEEDLING PLANTINGS (OPTION A). REQUIRED MITIGATION PLANTING AREA = ATIO = 40,096 SF, WHICH SHALL HAVE 645 PLANTINGS. NO SEEDLINGS SHALL BE PLANTED WITHIN SANITARY EASEMENTS. ER PLANTING INSTRUCTIONS: 645 CONTAINER GROWN SEEDLINGS AT 8'X'8 ON CENTER ALONG WOODLAND EDGE WITH TREE USE SCHEDULE SHOWN BELOW FOR SPECIES SELECTION. SPECIES CAN BE SUBSTITUTED FROM ARLE COUNTY APPROVED PLANTING LIST. SPECIES AMOUNTS CAN BE CHANGED PER AVAILABILITY. SPECIES CHOICE WITH DESIGN ENGINEER. CONTRACTOR SHALL BEGIN PLANTING AFTER WORK IS FINISHED AND SHALL COMPLETE PLANTINGS WITHIN 6 MONTHS. SEEDLINGS SHALL BE ED ACCORDING TO BEST PRACTICES AS SPECIFIED BY THE USDA. MITIGATION PLANTING PURCHASE SCHEDULE Planting Type Botanical Name Common Name Quantity Container Quercus alba White Oak 75 Grown Container Acer saccharum Sugar Maple 60 Grown Container Quercus palustris Pin Oak 60 Grown Container Nysso sylvatica Blackgum Tree 60 Grown Container Betula nigra River Birch 75 Grown Container Taxodium distichum Bald Cypress 60 Grown Container Salix nigra Black Willow 60 Grown Container Alnus serrulata Smooth Alder 75 Grown Container Grown Halesia carolina Carolina Silverbell 60 Container Amelanchier x � grandiflora Autumn Serviceberry 60 Grown Autumn Brilliance Brilliance 645 SEE PLANS FOR EXACT LAYOUT. SPACE PLANTS AS SPECIFIED IN PLANT LIST OR AS SHOWN. ADJUST SPACING AS NECESSARY OR AS DIRECTED BY LANDSCAPE ARCHITECT. MULCH 2" DEEP IMMEDIATELY AFTER PLANTING AND WATER THOROUGHLY. PLANTING PIT. C PREPARED SOIL FOR SHRUBS SOIL SURFACE — ROUGHENED TO BIND NEW SOIL N O N N Q w � J W _J > I V) C W I O W J N Q I O U V J1 IN sf4i p > i . o 45183 AL _ a� ;= N o O L N �..o a U Cl O U Q (n L Cn a O' O7 O' ooa D0ONU-) o — N 000 Z r— V O LL Z W Z 2 D SET SHRUB PLUMB. TOP OF ROOTBALL O 0 SHALL NOT BE MORE THAN 1" ABOVE Z r 1 FINISHED GRADE REMOVE BURLAP FROM TOP 1/3 OF O ROOTBALL Uj 3" TALL WATERING BERM Q FINISHED GRADE ` I /2 BALL I I- DIA. MIN.CZ IIII W G � J 2 SHRUB PLANTING DETAIL > Q C9 Not To Scale 1 1 30 61 91 1 Date 03/14/2019 Scale 1 "= 30' Sheet No. C9 OF 16 File No. 17.014 620 615 610 605 60Y+00 12" Ra� PLAN SHOWING CHANNEL CROSS SECTIONS Scale: 1 "=10' 2 CROSS SECTION 1 REGRADING C 10 Scale: Vert. 1 "=5' Horiz. 1 "=10' 620 615 610 605 +5�00 / _ l X X X X X x X X X X X \ X x xex X X x x X X x X X X X x XS2 T.�If\�G? 620 615 610 605 60Y+00 3 CROSS SECTION 2 REGRADING C 10 Scale: Vert. 1 "=5' Horiz. 1 "=10' x /x X X X x x �x x x x x 1 G x= x� x x x X X x ,. X X x x x x ,. \ x x x X / x�� x / x x x x x x x x x x \ x x X x x x x x x 12", A x x 8„ FG xG X x x x x x x x x x x x x x X x x \ \\� x\/ x/ x\ x X LOG TAR x x x x x x \/ \ � /\ j \ \\ x X x x x x x 0 12 LT__�� TBR / x x x x FLAG \ \\ \\�% X 0 / I SNAG _� /\ x \ / x x I _ X x x x { X X X X X Xi---Xx X X X X X X x x X x-- RELOCATED LOG 3 x x x x x x x x x x x x x6" LT 8 RP x II x x X x x x1x _ x L x8 �TX x x X X u x x x x x x IkLT x SLAGx x x X x u x x x x x x 620 615 610 605 1+5800 625 620 615 610 605 60Y+00 i r4-' CROSS SECTION 3 REGRADING C 10 Scale: Vert. 1 "=5' Horiz. 1 "=10' I / XS4 625 620 615 610 605 1+5�00 625 620 615 610 60Y+00 / 5 CROSS SECTION 4 REGRADING C10 Scale: Vert. 1"=5' Horiz. 1"=10' G 625 620 615 610 1+5805 LEGEND LOWLAND PLANTING AREA W w LIVE STAKE PLANTING AREA RIPARIAN PLANTING AREA FOREST EDGE + + PLANTING AREA + + 3'-4' CHANNEL BOTTOM EXISTING SPECIES SIGN ABB. SCIENTIFIC COMMON OAR Juglans nigra black walnut A Acer maple x LT Liriodendron tulipifera tulip poplar RP Robinia pseudoacocia black locust FG Fagus grandifolia American beech QP Quercus polustrus pin oak • PO Platanus occidentalis sycamore PS Prunus serotina black cherry PA Polystichum acrostichoides Christmas fern OTHER SNAG/STUMP P FLAG ® LOG SEE SHEET C11 FOR PLANTING NARRATIVE, DETAILS AND SCHEDULE ic. o -45183 10_ "TACW AL _ CHANNEL RESTORATION NARRATIVE SHIMP ENGINEERING, P.C. PERFORMED A SURVEY OF THE 178' CHANNEL AND RIPARIAN BUFFER OF THE INTERMITTENT STREAM ON THE SUBJECT PROPERTY. EXISTING CONDITIONS: THE FOLLOWING BANK CONDITIONS WERE OBSERVED DURING THIS SURVEY: • EROSION WAS OBSERVED ON 40-60% OF BOTH BANKS. • VEGETATIVE PROTECTION WAS OBSERVED ON 40-60% OF BANKS. • STREAMBANKS WERE OBSERVED TO BE VERTICAL OR UNDERCUT ALONG THE SURVEYED AREA. FROM THESE OBSERVATIONS IT WAS CONCLUDED THAT THE CHANNEL WAS IN MARGINAL CONDITION PER VIRGINIA STREAM ASSESSMENT FORM 1. THE FOLLOWING RIPARIAN BUFFER CONDITIONS WERE OBSERVED DURING THIS SURVEY: • RIPARIAN AREAS WITH TREE STRATUM WERE OBSERVED WITH A PARTLY MAINTAINED BUT SPARSE UNDERSTORY. • NO WETLANDS WERE OBSERVED IN STUDY AREA. • SEVERAL FALLEN TREES WERE OBSERVED FROM THESE OBSERVATIONS IT WAS CONCLUDED THAT THE RIPARIAN AREA WAS IN LOW SUBOPTIMAL CONDITION PER VIRGINIA STREAM ASSESSMENT FORM 1. THE FOLLOWING UPSTREAM CONDITIONS WERE OBSERVED: THE DRAINAGE AREA IS MOSTLY DEVELOPED LAND WHICH HAD NO OBVIOUS RUNOFF CONTROL MEASURES. IT WAS CONCLUDED THAT THE UPSTREAM DEVELOPMENT CONTRIBUTED TO THE EROSION AND SUBOPTIMAL CONDITIONS WITHIN THE CHANNEL. DUE TO THESE CONDITIONS, IT WAS DETERMINED THAT CHANNEL RESTORATION ALONG THE SURVEYED AREA WOULD HAVE A POSITIVE IMPACT TO THE IMMEDIATE INTERMITTENT STREAM AREA. ADDITIONALLY, IMPROVEMENT OF THE CHANNEL COULD CONTRIBUTE TO INCREASED HEALTH OF DOWNSTREAM WATERS DUE TO A REDUCTION IN SEDIMENT FROM BANK EROSION AND INCREASED AQUATIC OXIDATION DUE TO IMPROVED CHANNEL CONDITIONS. CHANNEL RESTORATION DESIGN SHIMP ENGINEERING THEN DESIGNED A RESTORED CHANNEL WHICH WOULD PROVIDE ADEQUACY FOR HEAVY STORM RUNOFF AND PROVIDE PROTECTION AGAINST EROSIVE VELOCITIES WITHIN THE CHANNEL. SHIMP BEGAN WITH AN ASSUMED CHANNEL BOTTOM WIDTH OF 3' WITH SIDE SLOPES AT 3:1 SLOPE. A HYDRAULIC STUDY OF THIS DESIGN CHANNEL WAS CONDUCTED. THE STUDY USED THE EXISTING UPSTREAM CONDITIONS ALONG WITH THE NEW DRAINAGE CONDITIONS FROM THE PROPOSED DEVELOPMENT. IT WAS DETERMINED THAT THE 10—YEAR, 24 HOUR STORM EVENT WOULD PRODUCE A RUNOFF DEPTH OF 0.75' WITHIN THE RESTORED CHANNEL. ADDITIONALLY, THE STUDY DETERMINED THAT 2—YEAR STORM VELOCITIES WOULD APPROACH 4.7 FPS. TO PREVENT BANK EROSION FROM THESE STORM, CLASS Al RIP —RAP WILL BE PLACED ALONG THE REGRADED BANK SIDES TO A HEIGHT OF 12" ABOVE THE CHANNEL BOTTOM. THIS WILL ENSURE THAT RUNOFF FROM HEAVY STORMS WILL BE CONTAINED WITHIN THE RIP —RAP PROTECTED DEPTH AND WILL NOT ERODE THE SIDES. RIPARIAN IMPROVEMENT DESIGN A VARIETY OF FACTORS WERE CONSIDERED TO IMPROVE THE RIPARIAN BANKS, INCLUDING NATIVE PLANT SPECIES, LOCAL ECOSYSTEM/HABITAT, AND NATURAL BANK STABILIZATION. THE FOLLOWING POINTS OUTLINE CONSIDERATIONS AND TECHNIQUES TO CONTRIBUTE TO A HEALTHY RIPARIAN BUFFER: • A PLANT PALETTE OF NATIVE SPECIES WAS SELECTED TO CORRESPOND WITH ALBEMARLE COUNTY'S NATIVE SPECIES DATABASE; ENCOURAGING A NATIVE ECOSYSTEM. • INCREASED PLANT DIVERSITY ALONG BANKS. PLANTING INTRODUCES DOZENS OF ADDITIONAL NATIVE SPECIES. • NATIVE FRUITING AND FLOWERING SPECIES ARE SPECIFIED TO CONTRIBUTING TO LOCAL WILDLIFE HABITAT. • ROOTS WILL BE UTILIZED TO STABILIZE CHANNEL BANKS. PLANTINGS WILL BE IMPLEMENTED THROUGH STREAM RESTORATION TECHNIQUES, SUCH AS LIVE STAKING, ALONG BANK SLOPES. LANDSCAPE NOTES: 1. Live stakes shall be planted in 3 rows on banks 2. Trees and shrubs shall be installed in a random pattern rather than a grid —like pattern where all plants are installed at the overall spacing range listed and specified on the tables. Spacing apply to each group of plants as a whole. 3. Plants should be spaced at a minimum distance specified on the tables above and in a random or clumping pattern. 4. Minor adjustments to plant material placement locations may be directed in the field by onsite engineers based on existing plant community species and ecosystem structure, as well as post —grading field conditions related to wetness of a particular area. 5. Seed mix only for 'Forested Edge' areas in ACSA easement. 6. Trees 20' from center of intermittent stream will remain when grading permits. 7. All whips to be planted with tree tubes and matting. LOWLAND PLANTING Botanical Name Common Name Size :]:Spaceing(FT) Quantity PERENNIALS (SEED) Eupotoriodelpus fistulosum Joe—Pye Weed Seed Mix — 25% Pynantheum virginianum Virginia Mountain —Mint Seed Mix — 25% Symphyotrichum concolor Eastern —Silvery Aster Seed Mix — 25% Symphyotrichum pilosum White Heath Aster Seed Mix — 25% SHRUBS Corpus amomum Silky Dogwood Quart 7' 28 Ilex verticillato Winterberry Quart 7' 28 Photinia melanocarpa Red Chokeberry Quart 7' 28 1 LOWLAND PLANTING SCHEDULE C 11 NOT TO SCALE RIPARIAN PLANTING ON 3:1 SLOPE Botanical Name Common Name Size Spaceing(FT) Quantity UNDERSTORY HERBACEOUS Osmundo cinnomomea Cinnamon Fern Quart 3-5' 50 Polystichum acrostichoides Christmas Fern Quart 3-5' 50 Dennstoedtio punctilobula Hay —Scented Fern Quart 3-5' 50 Dryopteris marginalis Marginal Shield —Fern Quart 3-5' 50 UNDERSTORY SHRUBS/TREES Corpus amomum Silky Dogwood Quart 3-5' 50 Lindera benzoin Spicebush Quart 3-5' 50 CANOPY TREES Tilia americana Basswodd Whip 40' 6 Quercus palustris Pin Oak Whip 40' 6 Quercus bicolor SwampOak White Whip 40' 6 3 RIPARIAN PLANTING SCHEDULE C 11 NOT TO SCALE LIVE STAKING PLANTING ON 3:1 SLOPE Botanical Name Common Name Size(FT) Spaceing(FT) Quantity Populus deltoides Eastern Connonwood Native Cuttings 31 85 Salix discolor Pussy Willow Native Cuttings 31 85 Sombucus nigra Common Native 3' 85 ssp. canadensis elderberry Cuttings Salix Nigro River Birch Native Cuttings 3 85 Salix sericea Silky Willow Native Cuttings 3' 85 Physocarpus Ninebark Native 3 85 opulifolius Cuttings Corpus amomum Silky Dogwood Native Cuttings 3' 85 5 LIVE STAKING PLANTING SCEDULE C 11 NOT TO SCALE FORESTED EDGE ENHANCEMENT Botanical Name Common Name =SzeSpaceing(FT) Quantity HERBACEOUS (SEED) Aster cordifolius Heart —Leave Seed Mix — 25% Aster Schizachyriu Little Bluestem Seed Mix — 25% scopariumm Geranium Spotted Seed Mix — 25% moculatum Geranium Anemone lancifolia Mountain Thimbleweed Seed Mix — 25% UNDERSTORY SHRUBS/TREES Cercis canadensis Redbud Quart 7-10' 75 Corpus Florida Flowering Dogwood Quart 7-10' 75 Viburnum Black Haw Quart 7-10' 75 prunifolium Viburnum CANOPY TREES Acer rubrum Red Maple Whip 40' 18 Quercus albo White Oak Whip 40' 18 Quercus rubra Red Oak Whip 40' 18 7 FOREST EDGE PLANTING SCHEDULE C 11 NOT TO SCALE I TERRACE WIDTH VARIABLE I PLANTING SPACED PER TABLE FILL MATERIAL COIR MAT(40)/GEO TEXTILE 2' WOODEN STAKE 0 ON P SPEO\F\E _ COIR LOG W/ 3' N�0 NS I I —I NATIVE GRASS PLANTING J() BE PAP I I —III —I 2.5 � — 3\s`aP� IMIMIMIMI 110 YR STORM WATER HT. 5' — — J— 111=1 I I I I E 1.0' CREEK BED I—III-I1 III —III —III 11= I I —II —III —III —III —III —I II III111 IiIIIIIIII IiIIIIIiIIiIIIIi II III=111-11MIMIMI1=1IE 1.5' CLASS Al RIP —RAP K'2" LOWLAND PLANTING DETAIL C 11 Scale: 1 "=3' FILL MATERIAL PLANTING SPACED PER TABLE COIR MAT(40)/GEO TEXTILE 2' WOODEN STAKE F COIR LOG W/ NATIVE GRASS PLANTING E 2.5' 1 10 YR FLOW DEPTH I I r l l l l 1.0' CREEK BED I —III —I I I 1.5' CLASS Al RIP —RAP 4 RIPARIAN PLANTING DETAIL C11 Scale: 1"=3' FILL MATERIAL COIR MAT(40)/GEO TEXTILE- 4' LIVE STAKE. PROTRUDING 1'-, I 2.5' oe e 1 10 YR FLOW DEPTH�c�/3 M 1.0' CREEK BED 1.5' CLASS Al RIP —RAP 6 LIVE STAKING PLANTING DETAIL C11 Scale: 1"=3' PLUG SPACING PER TABLE SPECIFICATION 2" WOOD CHIP LAYER MIN. COIR MAT(40)/GEO TEXTILE FILL MATERIAL LIGHTLY COMPACTED BEFORE PLANTING AREAS >3.5' ABOVE CHANNEL PLANTED WITH 'FOREST EDGE' PLANTING TYPE \ S`OpE AREAS >3.5 ABOVE CHANNEL PLANTED WITH 'FOREST EDGE' PLANTING TYPE ON P�pN PS SPEC\F\EO —_ —I1-1 1 2.5' OPE ZO 6E P�PN 11-1 I 1=1 11= 1 10 YR FLOW DEPTH I I —I I III 1 1 1 I I I 1 1 1 I I I 1 1 1 I I I 1 1 1 1.0' CREEK BED — 1.5' CLASS Al RIP RAP 8 FOREST EDGE PLANTING DETAIL C11 scale: 1"=3' WIDTH VARIABLE KIFAKIAN FLAN SPACING TBD ON- 2" WOOD CHIP LAYER TOPSOIL BA( LOG DIAMETER VAF EMBED MIN. J LOG DIAI NOTES: 1. TO BE USED AS PART OF WOODY DEBRIS PLACEMENT. 2. EXCAVATE AREA TO PLACE LOG IN TO J DIAMETER OF LOG AND BACKFILL UP GRADIENT WITH TOPSOIL FILL. 3. THIS WOODY DEBRIS PLACEMENT PRACTICE IS TO BE USED TO ACCOMMODATE MINOR GRADE CHANGES AROUND EXISTING TREES AND OTHER AT —GRADE FEATURES TO BE PRESERVED. 10 LOG PLANTING SECTION C 11 Scale: 1 "=3' 0 JU SHIP > i . o 45183 \ ( / VARIABLE WID H I I / /{ / II I o SWM FACILIT�h I I �('' / � // I I � � 3:1 ESMT o, �� \ P TONE FLOW � SPREADERS � / / 1 I I 1 / 10' PRIVATE L=2/12' W=3'/ / rroo \ V B WI l DRAINAGE E SSMH / / // � y\ I I I/ I � M CI X I o / / �r 0 / I / , , ES . ./ CLASS Al / / - - - _ -BMP A A RbP=RAP 4.30 ac DA \ y\ \ \ 1.71 ac Imp v 28 x2800 8 //� A LOT 5 S R —�— r v �v v �, L0 6 LO� 0 A2 52 \ 52 LOT 8 \ \\ 5 00 \\ 2b' BLIC PI�/ 0T T D AIN�GE I \I II �� /' / \\ 5 �� 1 1 A A 2ss ' MT I I \ 090 \ \\ HDPE — � 4 00 4 / C�ASS All �_ -� I / /� I I I I � / / i CORM - I ol //RIP -RAP / 20' P BLIC 1 �/ // I I , LOT 10I I \ I 67 67 24 / J' I CD-19 DRAINAGE MT / / 28 I I ` I �a / 4 / 4 O'PBiC / p // / �WMN C & � OPEN SPACE / / / / / I I /� ES RM x 34 so ' / / r s�o 47 s7 v PERMANENT STORMWATER MANAGEMENT NOTES 1. SEE SHEET C13 FOR BMP PROFILES AND DETAILS. SEE SHEET C16 FOR STORM SEWER PROFILES AND DITCH DETAILS. 2. BMP'S MUST BE INSTALLED ONLY AFTER ALL UP -GRADIENT GRADING HAS BEEN COMPLETED AND STABILIZATION ACHIEVED. 3. REMOVE PERIMETER CONTROLS WHEN SITE HAS REACHED STABILIZATION AND ALBEMARLE COUNTY ESC INSPECTOR HAS GIVEN APPROVAL. 4. BMP'S SHALL BE MAINTAINED PER SCHEDULE LISTED ON SHEET C1. 5. SEE DETAIL 10 ON SHEET C16 FOR OUTLET PROTECTION SIZING. LOT 1 M m LOT — — —COT 2- -7 o-- -- - -- ml o L\6�0 7605 7605 x 7541 7 - _ 7300 87 7 67 v / 0 \ / m \ t A �, 6 24 164 �oA 40 v ♦ e ' — — 2 \\ 34 GA A RID E LANE \ \ N I \ y \ 36 PUBLI ROW \ I w 25 MPk AD = 260 \00 x o V 0' PUBLIC! 7 DRAINAGE E \ \ 1 PARCEL/ A/ \ r i o 0 0 \ \ I \ o o 0 / / �� •/ I \ 06 \ 6 r VA ABLE WIDTH/ / / CD-1 j I V A 6 \ x� �1/FACILITY MT ^o // // / g / AV I o oV A V\\ 67 7 v 6 ` r / / / �� \ s I \ \ \ LOT 22 \ \ I \ /, / / / / / I , , l _ I I I ` v v v LOT 23 ,o �LO�T 24, v v oti� / 27x LOT11 / I l l ���`� °�� �o v v 11 v vv v vv vv v v -LOT 25 / / / / / 5 v \ 11 \ V A v v v v v r LO121 VARIABLE�WIDTH / / / / r o / // I I 819 7 0 38 \ V A� : v I \ \ \ v A \ v v A SWMFACILITY ESMT/ o L� 80 • 66 v V A v \ I �, ► � I � V A V � / 3 / 786 \ \ o \ 45so 4 n a,/ 7 x� V A 47 x5� \\� I BMP/6 1800 1 0 \ \ \\ - . 18— 96 ac DA \\� X 3. \ 1.25 ac Imp I \� \ \ \ �s _ — 44 / \ \ \ 3907 \ \ �, LaT 14 07 \� 3940 77 v�—_— LOT 12 0 407 v 38 \ \---- x \ \ \ 1 °° \ \ -LQT 13 \ � � \ -n / I 1 EX. \\`CLASS AI \\ 2 ooX \ \\ \ �� \ \\\X �\ / 1 Ph ILDING �C � RIP�RAP � 0RM v v v E2 `\ 8 \. v GR �VEL OW 30 �� • v ` \ v \ �� \ READIER \ x \ RIABLE WIDTH \ \ \ 4 — 42�7 1 / LOT 20 ACILITY ESMT oo \V \ 43 x _ \ C-`-1 \ \ \ \ \ 2:1 \ c �� r I \\ v _ x4200 V. sty V 1 B C v V A V A 1 \ 63 0 \ AI AG ESMT — v \ � V —k \ \ — \ V v I 0 M v 3:1 > \ 1 VARIABLE� WIDTH ASWM FACILITY ESMT `\ 1 \ B2 \ 15 H STORM Z - 87 8.6% I / �__ �_ _ -� 63 % b `� I \ / I Q7 \ I � CLASS Al I I 8 I� / LOT 19 \ I�� i / \ \ \RIP -RAP I / L0 1 2If. % I / = / I I o I / \ oo / 4140 � o I �0 P R11VATE / / I / o o I i I / 7— �_� _ / V JR I AGE / 2880 I I / 3 BZ,D B / �a g / 1636.2 4 41 T / 5" HDPE STOR 47C4r- _ 1 HDPE D AIN _ I 1 'PUBLIC \ / 1 I 6 / / 4 / / / 34.0 41 / I D INAGE ESMT RESTORED � � \ / � 1 x741- / / STREAM / CO / \ 29D0 I / / \ \ / � / - ---------------- / 12' SWM FACILITY I / I / CHANNEL / � � \ � S I \ \ / Ac ESS ESMT I LOT 16 I v vv v LOT 18 � / I \ \ 47 I / n o I I \ 20' PUB ICl I i I I \ 40 \ \ 10' P�IVATE DI L I / DRAINAG & SW I I 10 \ 10 \ DRAINAGE ACCESS ESMT I 138 1 838 4047 v A MT CLASS AI 00 I I I ,• 3\ v v 4110 I / \ RIP- AP I I \ HD0 / _ 1 PE � � I \ e " 21 L, LASS Al y38sz a 8ss I + I 415" \ 00 4 � RIP RAP. INSTALL I a C-31 MATTING I �\ o o ( \ \ INV. vv U 37 - P 92, �/ �o A `LOT 17 6 1 \ I 0 � A oR v 4197 0o I / 4197 v 43 x _ 2 3060 I 1 — —\ _ n' 4260 20' PUBL C b so 38 I ROOF \ DRAINAGE & SWM I I X � \ IN ACCESS ESMT / o F / x _ DRAIN 3 78 3/00 / /x / / I / / \ 3678 AE ATE AREA WITHIN j \ / / 10 OF EX. FENCE I AFTER CONSTRUCTION / LOB" 4 / / 6 72 7 761' LOT 26 JAMESTOWN RD/DITCH 4A DETAIL Scale: 1" = 30' V ` I I�0 �6, \ m v v 1^ IA\ I v O � / ioK 30 0 30 60 90 Scale: 1 "=30' iW J SHIII P i. 0 45183 i / 6000 SF - / / STONE �8 / Xx / o / Q / DOM ATE o STON / STO AGE 7 / O� , o / / / TI C/0 CONNECTION 41.0' N 1 24 OME o o E3 GRA 0 o / ST E 6000 SF Q ° ST E ^TSTONE BIOFIL R B ETAILS / BMP DETAIL: BIOFILTER B SCALE: 1" = 20' 3" LAYER OF #57 STONE -I6" 3' WIDE STRIP OF +HEIII—I$ FILTER FABRIC I =� I 1r— 6"X6" TREATED TIMBER LEVEL SPREADER LIP. ANCHOR TIMBERS TO FOOTER WITH STEEL BOLTS. FLAT LENGTH ELEV=8.5 CONCRETE FOOTER 6 GRAVEL FLOW SPREADER C 13 Not To Scale INLET DITCH RFACE DITCH CONNECTION 630 625 620 615 60 CLASS Al TOP OF BA K= 6 0.5 6' WEIR ELEV=6195 820 EF X 1 0' DEPTH 619. TOP OF - 617.0 B STON OF GRAV FILTER FABRIC S RAGE LAYER 3 PERF RATE ON OTTO & 8 0 SF 1.0' P C DRAIN SIDES OF TONE DE PTH IN = 6 8.0 630 625 620 TTOM L 615 610 1 10+00 10+50 3 BMP B PRETREATMENT CELL (.1 HORIZ: 1" = 30' VERT: 1'=10' EX GRADE 1, PVC 6" PVC 48" PRECAST CONC. ELL & C/O NEW GRADE. WELL C/O IL M I: 4' CREST RISER W. TRASH RACK COVER-MEDII� W TH 3 - _ 2,70 3.0' SF X EPTH (� 620.0 RIM=618.40 HARDWOOD ULCH - - - 10 YR WSE=61 �3- - - 618.0 BED SURFAC - 615.0 TOP OF GRAV L 612.0 BOTTOM OF RAVEL 18" HDP OUT 3" X " PVC 4" SCHEDUL (2) 24 HDPE PIPE #57 TONE FILTER FABRIC @ 611.2 REDU ER INTO 40 PERF. P W. DO ED GRATE STORAGE LAYER: ON SIDES OF 3" ORIFICE @ ® 612.50 TOP=6 8.20 6000 SF X BIOFILTER ONLY GRATE 614.5 3" WASHED PEA GRAVEL FILTER B/W STONE & OIL MEDIA FABRIC A I LI\ FABRICRIC LINERKIXA FULLL: #,5 5 I UNL ER @ 18" DEPTH /�� 1DPVTP-WATAfVT\T'T' 1 PPOgC gPPT'TOT\T Not To Scale IN R 6" 1310FILTER A LANDSCAPE LIST Plant Symbol Planting Type Botanical Name Common Name Quantity Large Tree Quercus palustris Pin Oak 2 (D Large Tree Betula nigra River Birch 2 0 Large Tree Taxodium distichum Bald Cypress 2 Medium Tree Salix nigra Black Willow 2 Small Tree Alnus serrulato Smooth Alder 3 Shrub Clenthro alnifolia Summerset 3 Clethora Shrub Vibernum dentatum Arrowwood 6 Viburnum TOTAL: 20 BIOFILTER A PLANTING DETAILS NOT TO SCALE BIOFILTER B LANDSCAPE LIST Plant Symbol Planting Type Botanical Name Common Name Quantity Large Tree Quercus palustris Pin Oak 2 Large Tree Betula nigra River Birch 2 V Large Tree Taxodium distichum Bald Cypress 3 GMedium Tree Salix nigra Black Willow 2 Small Tree Alnus serrulata Smooth Alder 3 Shrub Clenthra alnifolia SC ummersetho 6 set Shrub Vibernum dentatum Arrowwood 6 Viburnum TOTAL: 24 BIOFILTER B PLANTING DETAILS NOT TO SCALE /1�� 7 Jib SHI11 P ic. 0 45183 10 R1) A CONSTRUCTION OF A SILT FENCE (WITH WIRE SUPPORT) 1. SET POSTS AND EXCAVATE A 4"X4" 2. STAPLE WIRE FENCING TO THE POSTS. TRENCH UPSLOPE ALONG THE LINE OF POSTS. I�/_ IfJVIV)I % NGIPti 3. ATTACH THE FILTER FABRIC TO THE WIRE FENCE AND EXTEND IT INTO THE TRENCH. 4. BACKFILL AND COMPACT THE EXCAVATED SOIL. G FLOW EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. SILT FENCE (SF) W. WIRE SUPPORT Not To Scale / ELEV. I� EL=C Top Surface Area 1.0' DRY STORAGE p2 H �- 67 CU. YD./ACRE EL=B WET STORAGE 67 CU. YD./ACRE D1 FILTER CLOTH ORIGINAL (EXCAVATED) GROUND EL=A Bottom Surface Area ELEV. ** *SEE PLATE 3.13-1 COARSE AGGREGATE CLASS I RIPRAP CROSS SECTION OF OUTLET CLASS I RIPRAP LENGTH (IN FEET) _ _ (INXAC )AINAGE AREA DIVERSION DIKE 05 / COARSE AGGREGATE EXCAVATED FILTER CLOTH AREA **COARSE AGGREGATE SHALL BE VDOT #3, #357 OR #5 OUTLET (PERSPECTIVE VIEW) 2_N� TEMPORARY SEDIMENT TRAP (ST Not To Scale GRAVEL CURB INLET SEDIMENT FIL TER GRAVEL FILTER RUNOFF WATER 4 SEDIMENT ILI, I a CONCRETE GUTTER 12' SPECIFIC APPLICATION 12" WIRE MESH FILTERED WATER a e — d a FF Amill CURB INLET THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS WHERE PONDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO CAUSE INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND UNPROTECTED AREAS. * GRAVEL SHALL BE VDOT #3, #357 OR 5 COARSE AGGREGATE 1992 3.35 Source: Va. DSWC TABLE 3.35-A ORGANIC MULCH MATERIALS AND APPLICATION RATES RATES: MULCHES: NOTES: per Acre Per 1000 sq. ft. Straw or Hay 1'� - 2 tons 70 - 90 lbs. Free from weeds and coarse (Minimum 2 matter. Must be anchored. tons for Spread with mulch blower winter cover} or by hand. Fiber Mulch Minimum 35 lbs. Do not use as mulch for 1500 lbs. winter cover or during hot, dry periods.* Apply as slurry. Corn Stalks 4 - 6 tons 185 - 275 lbs. Cut or shredded in 4-6" lengths. Air-dried. Do not use in fine turf areas. Apply with mulch blower or by hand. Wood Chips 4 - 6 tons 185 - 275 lbs. Free of coarse matter. Air- dried. Treat with 12 lbs nitrogen per ton. Do not use in fine turf areas. Apply with mulch blower, chip handler, or by hand. Bark Chips SD - 70 cu. 1-2 cu. yds. Free of coarse matter. Air - or yds. dried. Do not use in fine Shredded turf areas. Apply with Bark mulch blower, chip handler, or by hand. * When fiber mulch is the only available mulch during periods when straw should be used, apply at a minimum rate of 2QQQ lbs./ac. or 45 lbs./1000 sq. £t. 5 MULCHING(MU) 3 INLET PROCTION IP e14 Not To Scale C14 Not To Scale TABLE 3.39-A ADHESIVES USED FOR DUST CONTROL Water Application SAFETY FENICE CE Dilution ) Type le Rate Adhesive (Adhesive: Water Nozzle Gallons/Acre Anionic 0 O PERSPECTIVE VIEW uj 10' MAX. CONCRETE BRACING FOOTING III IIII I"I IIII WIRE FABRIC LINE POST GROUND LINE PERSPECTIVE VIEW PERSPECTIVE VIEW PLASTIC FENCE METAL FENCE SOURCE: CONWED PLASTICS VDOT ROAD AND BRIDGE STANDARDS VA. DSWC 4 SAFTY FENCE(SAF) C 14 Not To Scale PLATE. 3.1 -1 Asphalt Emulsion 7:1 Coarse Spray 1,200 Latex Emulsion 12.5:1 Fine Spray 235 Resin in Water 4:1 Fine Spray 300 Acrylic Emulsion (Non -Traffic) 7:1 Coarse Spray 450 Acrylic Emulsion (Traffic) 3.5:1 Coarse Spray 350 6 DUST CONTROL(DC) C14 Not To Scale TABLE 3.31-C TEMPORARY SEEDING PLANT MATERIALS, SEEDING RATES, AND DATES SEEDING RATE NORTH N PLANT w w SOUTHb PLANT 3/1 5/1 8/15 2/15 5/1 9/1 SPECIES CHARACTERISTICS Acre 1000 ft2 to to to to to to 4/30 8/15 11/1 4/30 9/1 11/15 OATS 3 bu. (up [0 100 lbs., 2 lbs. X - - X - - Use spring varieties (e.g., Noble). (Avena saliva not less than 50 lbs.) RYEd 2 bu. (up to 110 lbs., 2.5 lbs. X - X X - X Use for late fall seedings, winter Secale cereale not less than 50 lbs.) covet. Tolerates cold and low moisture. GERMAN MILLET 50 lbs. approx. 1 lb. - X - - X - Warm -season annual. Dies at first Setaria italica frost. May be added to summer mixes. ANNUAL RYEGRASS` 60 lbs. 1'/z lbs. X - X X - X May be added in mixes. Will Lolium multi-florum) mow out of most stands. WEEPING IS lbs. 5'fi ozs. - X - - X - Warm -season perennial. May . Tolerates hot d slopes Era rostis curvula and acid infertile soils. May be Y added to mixes. KOREAN 25 lbs. approx. I'fz X X - X X - Warm season annual legume. LESPEDEZA` lbs. Tolerates acid soils. May be Les eza sti ulacea added to mixes. a Northern Piedmont and Mountain region. See Plates 3.22-1 and 3.22-2. b Southern Piedmont and Coastal Plain. c May be used as a cover crop with spring seeding. d May be used as a cover crop with fall seeding. X May be planted between these dates. - May not be planted between these dates. TEMPORARY SEEDING (TS Not To Scale TEMPORARY DIKE _Compacted Soil 18" min. —Flow 4.5' min. 8 DIVERSION DIKE(DD C 14 Not To Scale ���'�L�)ml '!I% -' STONE - 70' MIN. - CONSTRUCTION ACCESS -3" SV-2A ASPHALT _0.7 COLR` F -EXISTING 7` PAVEMENT ` ,b EA N. 2' A AG,Cif _ I = N1-°SE PROFILE 70' MIN. STONE CONSTRUCTION ASPHALT PN ED ACCESS "' WASHRACK I c" -EXIST NC 2c 2% PAVFUFNTJ' 12' MIN.* - �- T *P4'U'S- EXT=N FLL_ ',lelDTH POSIT':VF, DRAINAGE I TO SEDIMENT OF INGRESS AND ECRES 1 TRAPPING DEVICE OPERATION PLAN 1 ' VI% PoslkVE DRAINAGE TO SEDIMENT 2� iRA'PING DEVICL FILTER CLC-II ►A2[a]El A inn nfinum w,,iten' tap of 1 inch lulus-t be installed "Kith I lllillllnlunl 1 inch WficoCk shutoff NAve supplying a W-,ish hose N,ti7th a dialueter of 1. 5 ilnclles for adequate colnstalnt pressure. � =rill water must be carried away frolnl the enhance to In approved set& .�, area to remove sedi nlent All sediment shall be pivvented fi•onl enteiilnf, stonln drains, ditches or watercourses. PAVE[ WASH LACK PAVED CONSTRUCTION ENTRANCE (CE) Not To Scale PERMANENT SEEDING SPECIFICATIONS February 16 through April 30: Kentucky 31 Fescue - 128 lbs/acre; Red Top Grass - 2 lbs/acre; Annual Rye - 20 lbs/acre. Add 20 lbs/acre Indian grass when slopes are greater than 3:1. May 1 through August 15: Kentucky 31 Fescue - 128 lbs/acre; Red Top Grass - 2 lbs/acre; Foxtail Millet - 20 lbs/acre. Add 20 lbs/acre Indian grass when slopes are greater than 3:1. August 16 through October 31: Kentucky 31 Fescue - 128 lbs/acre; Red Top Grass - 2 lbs/acre; Annual Rye - 20 lbs/acre. Add 20 lbs/acre Indian grass on slopes greater than 3:1. November 1 through February 15: Kentucky 31 Fescue - 128 lbs/acre; Red Top Grass - 2 lbs/acre; Winter Rye - 20 lbs/acre. Add 20 lbs/acre Indian grass on slopes greater than 3:1. MULCHING SPECIFICATIONS: Straw or hay at a rate of 2 tons/acre. Must be anchored. Spread with mulch blower or by hand. LIME AND FERTILIZER SPECIFICATIONS: Lime and fertilizer needs should be determined by soil tests. Soil tests may be preformed by the Cooperative Extension Service Soil Testing Laboratory at VPI&SU, or by a reputable commercial laboratory. Information concerning the State Soil Testing Laboratory is available from CITY Extension Agents. Under unusual conditions where it is not possible to obtain a soil test, the following soil amendments will be applied: For Permanent Seeding: Seeded areas shall be limed at a rate of 2 tons per acre, and fertilized at a rate of 1,000 lbs. per acre of 10-20-10 (10 lbs, per 1,000 square feet) or equivalent. For Temporary Seeding: Seeded areas shall be limed at a rate of 2 tons per acre, and fertilized at a rate of 600 lbs. per acre of 10-20-10 (10 lbs. per 1,000 square feet) or equivalent. 10)PERMANENT SEEDING PS C 14 Not To Scale V L 0 LO IN w N� N W w z Z v W W D- z 2 w o= o z� w� z Slb w� N IN Q w W F V) J J V) zW W W zo W � JU SII11rIl� > ic. 0 45183 '�S {O11fAI r W E� E) q �� o U - N L a Oa o U Q O v cn o00 U U CV N N _1 �00Nln O o — N coCO� o 0 0 W N o' Q Z r— V M LL 0 LLL ^ r Z � W Z 2 o p z U W W Q J Z � n LL � W G N J Date 03/14/2019 Scale N/A Sheet No. C14 OF 16 File No. 17.014 A L 1.5 SIL T FENCE DR OP INLE T PROTECTION 2 X 4" WOOD FRAME STAKE DROP INLET PERSPECTIVE VIEWS ELEVATION OF STAKE AND FABRIC ORIENTATION aME fHER ;ESS HI CORNERS 1' MIN, DETAIL A 1 DROP INLET PROTECTION JPIP C 15 Not To Scale /1-45 BARS a 8" C-C TYP. I I 30" DIAMETER I I I ! TTTT I I I T7 I �: •; I I I A J STRUCTURE SIZE AND WALL THICKNESS VARIES SECTION A -A NOTES: 1. THE STANDARD SAFETY SLAB (SL-0 IS TO BE USED ONLY WHEN SPECIFIED IN THE PLANS ON THE DRAINAGE SUMMARY SHEET AND/OR THE DRAINAGE DESCRIPTIONTER THAN 12 . FOR MANHOLES ADJCTION 80ACENT OF SAFEf MSLABS�S BE B'T0P INLETS WITH � 2' WITH NOIGHTS ASAFET SLAB LOCATED WITHNTHE I)B FEET OF THE TOP OR BOTTOM OF THE STRUCTURE. SAFETY SLABS SHALL NOT BE LOCATED BELOW ANY INLET PIPE OF 30" DIAMETER OR GREATER. 2. THE COST OF THE SL-1 IS INCLUDED IN THE COST OF THE STRUCTURE. 3. ACCESS OPENINGS ARE TO BE STAGGERED FROM ONE SIDE OF STRUCTURE TO THE OTHER WHERE APPLICABLE. STEPS ARE TO BE STAGGERED ACCORDINGLY. 4. SAFETY SLAB MAY BE CASTAN-PLACE OR PRECAST. CASTAN-PLACE CONCRETE TO BE CLASS A3 (3000 PSI). PRECAST CONCRETE IS TO BE A4 (4D00 PSI). RENFORCING STEEL TO BE IN ACCORDANCE WITH AASHTO M31, 5. ACCESS OPENINGS MAY BE 30" DIAMETER OR 30" SOUARE. WHEN STRUCTURE WIDTH IS LESS THAN 30" THE ACCESS OPENING SHALL BE RECTANGULAR (STRUCTURE WIDTH BY 301, LONG). SECTION B-B SEE CAST N PLACE DRAWINGS FOR FURTHER DETAILS i 5 BARS C 8" C-C TYP. TYPICAL PRECAST UNIT DO ROAD AD BRIDGE SSTTANDARDS TYPICAL CONCRETE SAFETY SLAB FOR DROP INLETS, � ° R" SHEET 1 OF 1 REVISION DATE MANHOLES AND JUNCTION BOXES 302 106.14 VIRGINIA DEPARTMENT OF TRANSPORTATION Vr„m ll1 cc TYPICAL GRAVEL STRUCTURE 11 RIGHT OF WAY DIVERSION RWD C15 Not To Scale 10% SETTLEMENT -11 1 TYPICAL VEE—SHAPED DIVERSION CLEAN WATER DIVERSION (CWD Not To Scale END -SECTION 12" - 60" PIPE -HUB END ON OUTLET END -SECTIONS SPIGOT END ON INLET AND -SECTION yx I CONCRETE TO BE L I I E JJJ 4D00 PSI #AINIhHJM � � PLAN C B ❑IAME7ER OF PIPE eNN ols 9TF rf�04; FA3dC l t A I-�PAY LINE SECTION X-X END VIEW END SECTION DIMENSIONS PIPE DIAANETER A B C D E 121, 4" 2"0" 2'-0" A.-0;. 2.0" 2'-3" 24.. 9 31-7., Z7" 1O 4'-0" /,_1. 6..1,1 4._6�. 54" 2 -S' 5'-5" 2.-5 8'-2 7'-6" 8'_D'� 11 ALTERNATE END -SECTION 12" - 60" PIPE ES-1 HUB END ON OUTLET END-SECTLONEj SPWI END ON LNLET ENO -SECTION 1x � jx CONCRETE TO BE 11 LL - E J 4000 PSI MINIMUM L d PLAN! C B � 01El OF PIPE TELL FABRIC REIWnCE A 0 PAY LNE SECTION X-X END VIEW END SECTION DIMENSIONS PIPE [RAMETER A a C 0 i= 12.. 4., 15" 5" a'•S' 3'-10" fi'-V` 2'-6" T 2'-11" 3'-2" V.1.1 24" 10" 3'-71, 28" 4'-O" 27" 10 4'•D" 2'-1 6'-lr 4'-6" 33" T'-1 4'- FFY411 5•-6" 36" 11•3" 5'-3" 42" 1'-4" 5'-3" 2'-11" 3'-2" 8'-8" 48,; 2'.0., 8._g. 2.-2. $'_2" 7•-D" '0. 22 3;•3., NOTES-, PIPE LENGTHS 910WN ON PLANS ARE BASED ON END -SECTION DESIGN SHOWN ON THE LEFT. IF THE CONTRACTOR ELECT! TO USE THE ALTERNATE DESIGN SHOWN ON THE RIGHT, LZNGTHS WII,L BE KPLWED BY THE ❑IFFERENOE IN OiMENS1ON "D". SPECIFICATION REFERENCE FLARED END -SECTION FOR 12"-60" CONCRETE PIPE CULVERTS 302 VIRGINIA DEPARTMENT OF TRANSPORIAI ',:`4 T;EV_ 7/01 102.01 DRIP LINE SNOW FENCE BOARD FENCE CORD FENCE CORRECT METHODS OF TREE FENCONC Sri ; ui A� I 0 TRIANGULAR BOARD FENCE TREE PROTECTION FENCING Not To Scale IS-1 ........... \/ SHAPE TO ELEVATION OF MID -POINT OF LARGEST PIPE. I j SHAPE TO I i. CONTOUR I OF PIPE I I SLOPE TO DRAN TO INVERT OF OUTLET PIPE SECTION A -A TRANSITION BETWEEN •° ° PIPE DIAMETERS WHEN METHOD OF TREATMENT IN DROP INLETS DIFFERENT SIZES OF PIPES ARE ENCOUNTERED. e •� SHAPING OF MANHOLE AND INLET INVERTS IN ACCORDANCE WITH THIS DRAWING IS TO APPLY TO THOSE STRUCTURES SPECIFIED ON PLANS OR WHERE INVERT OF PIPE IS ABOVE INVERT OF SLOPE TO DRAIN , TO INVERT OF STRUCTURE. OUTLET PIPE MANHOLE OR DROP INLET IS TO BE FORMED AND CONSTRUCTED IN ACCORDANCE WITH APPLICABLE STANDARD OR SPECIAL DRAWING. THE INVERT SHAPING AS DETAILED HEREON IS TO CONSIST OF A / L� PORTLAND CEMENT CONCRETE MIX CONFORMING TO CLASS A3 OR CLASS C1,EXCEPT THAT 25X OF COARSE AGGREGATE MAY BE ..; UP TO 4" IN DIAMETER AND CONSIST OF STONE, BROKEN BRICK, a r ;{:r,:; <•:.. BROKEN CONCRETE OR BROKEN CONCRETE BLOCK. THE SURFACE I I ;::i,[;;{{i•:; A ��V//��� SHALL BE LEFT SMOOTH BY MEANS OF HAND TROWELLING. NONE OF THE COARSE AGGREGATE SHALL REMAIN EXPOSED. I ;` ;' ••1•` ° DETAILS OF INVERT SHAPING AS SHOWN HEREON ARE FOR EXAMPLE ° PURPOSES ONLY. EACH MANHOLE OR DROP INLET IS TO BE SHAPED - INDIVIDUALLY TO BEST FIT THE PARTICULAR INLET AND OUTLET CONFIGURATION AND FLOW LINES. SECTION B-B PLAN METHOD OF TREATMENT IN MANHOLES xv=r STANDARD METHOD OF SHAPING SPECIFICATION REFERENCE ROAD AND BRIDGE STANDARDS MANHOLE & INLET INVERTS SHEET 1 OF 1 REVISION DATE VIRGINIA DEPARTMENT OF TRANSPORTATION 302 106.08 0� rz w N� N W w v W v Z O 0 � w� z w� D N 0 N [\ N Q w� �L J (n J_ ~ i I W W w z0 w� � NQ w 0 m U Jib sfamp ic. b 45183 �0��, I w� Co ` o � o +' L O �o> U N O (n O L L � U � U Q O U co Z5 OO N N N 000N1(s) O O � OO > N I� w� Q Z r� V 0 L;L Z � W Z O z U W W Q J Z Q Q J C G W U) J Q Date 03/14/2019 Scale N/A Sheet No. C15 OF 16 File No. 17.014 675 670 665 660 655 650 645 640 635 630 625 620 615 645 640 635 630 625 620 615 610 10+00 STORM SEWER PROFILE: Al-A6 HORIZ: 1" = 30' VERT: 1'=10' 10+50 11+00 11+50 12+00 (3�STORM SEWER PROFILE: BI -B5 HORIZ: 1" = 30' VERT: 1'=10' • • 1 t� f• �/iY)� /a» • I -I�I,II 11111111111121 • • �_�� • 1 E?%1 [ Tom M iiiiii 0 1 OR -0 � I'� ���I/ice - � • �- �r.�� F1:1• � 1 11 1 1 11 1 11 1 HORIZ: 1 1 630 625 620 615 610 605 600 (�_6 BIOFILTER B OUTLET PROFILE: EI -E3 C16 HORIZ: 1" = 30' VERT: 1'=10' 630 625 620 615 610 605 600 645 640 635 630 645 640 635 630 625 620 615 12+5010 13+00 625 625 620 10+00 Z 10+5020 rT"� CULVERT F PROFILE C16_ HORIZ: 1" =_30' VERT: 1'=10' 13+50 640 635 630 625 620 615 610 605 600 NOTE: BMP'S MUST BE INSTALLED ONLY AFTER ALL UP -GRADIENT GRADING HAS BEEN COMPLETED AND 675 AFTER PRELIMINARY STABILIZATION ACHIEVED NOTE: CONCRETE INLET SHAPING (IS-1) REQUIRED ON 670 ALL STRUCTURES WITH A 4' OR GREATER DROP AND SAFETY SLABS (SL-1) ON ALL STRUCTURES TALLER 665 THAN 12'. SEE SHEET C15 FOR DETAILS. 660 655 A3 "" r 655 650 650 645 645 640 640 635 635 630 630 625 625 620 620 655 650 645 640 635 630 625 10+00 10+50 11+0b0 &15 iutSU IItUU II+nU 1Z+UU IZtSU ��BIOFILTER A OUTLET PROFILE: CI -C3 HORIZ: 1" = 30' VERT: 1'=10' Width - I TYPICAL DITCH SECTION Entrench Matting 6" Depth Ditch Sections Channel 10-Yr 10-Yr Channel l Channel Ditch Lining Depth Flow Flow Width Side (cfs) Depth Slope EC-3 1 Matting 1.0 1.45 0.34 6 3:1 EC-2 2 Matting 1.0 2.65 0.50 6 3:1 EC-2 3 Matting 1.0 6.37 0.89 6 3:1 EC-2 4 Matting 1.0 2.29 0.44 8 4:1 EC-3 5 Matting 1.0 20.26 0.92 8 4:1 Class Al 6 Rip -Rap 1.0 3.72 0.51 8 4:1 NOTE: Ditch 6 shall be lined with 9" depth of Class Al rip -rap. Place rip -rap over EC-3 matting. 7 TYPICAL DITCH[ DETAILS C 16 Not To Scale ��N ItJ1717i7G11���� ��11 �Ii11111111i11���� Lam' . • . • .h];13�7 � � . �1 �•=1 _ �s`I STORM SEWER PROFILE: A3-A3A HORIZ: 1" = 30' VERT: 1'=10 640 635 630 625 620 615 610 605 PIPS' OUTLET CONDITIONS A 3do ( IN.) 'IPE OUTLET Tt, WELL )EFINED CHANNAL AREA WITH NU DEFINED CHANNEL L a 0 % - �iwd SECTION A -A FILTER CLOTH KEY IN 6"-9"; RECOMMENDED FOR ENTIRE PERIMETER NOTES: 1. APRON LINING MAY BE RIPRAP, GROUTED RIPRAP, GABION BASKET, OR CONCRETE. 2. La IS THE LENGTH OF THE RIPRAP APRON AS CALCULATED USING PLATES 3.18-3 AND 3.18-4. 3. d = 1.5 TIMES THE MAXIMUM STONE DIAMETER, BUT NOT LESS THAN 6 INCHES. Pipe Outfall Q10 (cfs) La (ft) Do (ft) 3Do (ft) d50 (in) depth (in) Outlet Condition Al 9.78 9.0 1.25 3.75 6.0 9.0 Flat 131 8.69 12.0 1.25 3.75 6.0 9.0 Channel C1 3.72 6.0 1.50 4.50 6.0 9.0 Channel D1 15.10 9.0 1.50 4.50 9.0 14.0 Channel E1 3.05 12.0 1.50 4.50 6.0 9.0 Channel F 6.37 6.0 1.50 4.50 6.0 9.0 Channel NOTE: "La" for C1, D1 & F only lists the required flat portion of rip -rap. Provide remaining sloped rip -rap as shown in plan/profile. OUTLET PROTECTION TABLE (OP Not To Scale Jib SHII1 P ic. 45183 � 0H 10)