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HomeMy WebLinkAboutWPO201700075 Plan - VSMP WPO VSMP 2018-12-14LEGEND EXIST NEW DESCRIPTION 1 `'t , x 12' TC TOP OF CURB ELEVATION 93 SPOT ELEVATION i Tia x 125 TVV TOP OF WALL ELEVATION lew x 1 25 Bw BOTTOM OF WALL ELEVATION BENCHMARK W 11TE STORM SEWER RD ROOF DRAIN SEWER LINE 5„w WATER LINE a.wr��u gas GAS LINE -, -� OHE OVERHEAD ELECTRIC WIRE ucE UNDERGROUND ELECTRIC . - • a- tl . OHT OVERHEAD TELEPHONE LINE HST UNDERGROUND TELEPHONE LINE - DRAIN INLET (DI) STORM/SANITARY MANHOLE a C PLUG 00 WATER VALVE & BOX 46 FIRE HYDRANT t WM ® WATER METER �-� LIGHT POLE UTILITY POLE PROPERTY LINE - - ADJACENT PROPERTY LINE VACATED PROPERTY LINE BUILDING SETBACK PARKING SETBACK V5MF FLAN fOR CROZET COURT TMF 05GOO-00-00-04500 WFO 2017-00075 ALL DISTRICT, ALE3EMARLE COUNTY, VIKGINIA VICINITY MAP SCALE: 199=1,000' IMAGE PROVIDED BY GOOGLE MAPS OWNER I DEVELOPER STONY POINT DESIGN BUILD 200 GARRETT STREET SUITE 0 CHAR LOTTESVILLE, VA 22902 LEGAL REFERENCE: DB 4951 PG 170 DB 1479 PG 180 DB 666 PG 109 DB 488 PG 007 WB 128 PG 705 SOURCE OF BOUNDARY & TOPO SOURCE OF BOUNDARY SURVEY: PLATS OF RECORD, COMPILED BY ROGER RAY AND ASSOCIATES. N 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. 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. m SANITARY EASEMENT GRADING EASEMENT ---� DRAINAGE EASEMENT SHEET INDEX UTILITY EASEMENT .� WATER EASEMENT C I - COVER 5 N EET - - ACCESS EASEMENT .-.�-. STORM DRAINAGE EASEMENT C 2 - EEC 15T I N GCONDITIONS D �J L 1 L I tiJ U T P LA I V p � �u..m . TREE LINE FENCE C4 - SUBDIVISION UTILITY P LA N STREAM - SUBDIVISION GRADING PLAN - 2 12 - INTERVAL CONTOUR irj -' I LJ I �1 I �J T om" L NARRATIVE -- ao INDEX CONTOUR C7 - E5CP STAGE I - PERIMETER CONTROLS CG-2 CC-2 STANDARD Bw CURB C E5CP STAGE I I GENERAL CONSTRUCTION C - CG-6 COMBINATION 6w CURB do GUTTER C - MITIGATION PLAN C 10 - CHANNEL RESTORATION PLAN N - � CONCRETE PAVEMENT SIDEWALK P E- 1- _�: RIPRAP C I I - CHANNEL RESTORATION PLAN ASPHALT C I - PERMANENT 5WM PLAN GRASS EC-2 MATTING C I - EROSION CONTROL D ETA I L EC-3 MATTING C I -4- E *5 AND B M P D ETA I LS T�TF 0 WETLAND C 15 - STORM 5fWER I=' Ur I~ILEA io io PARKING COUNT CROSSWALK HANDICAP ACCESSIBLE AISLE CG-12 HANDICAP PARKING NOTE: 1. THE SIZE OF THE SYMBOLS MAY VARY FROM WHAT IS SHOWN, APPROVED by the Alba)rnarle County community Dev lon'tjlent �['1"'partment Date File ,� t 0,6(>'�, STEEP SLOPES All Onsite Managed and Preserved Slopes are shown. WATERSHED Lickinghole Creek Watershed Supply LAND USE SCHEDULE AREA IN LOTS ........................ 8.94 Ac. AREA IN ROW ......................... 0.29 Ac. TOTAL AREA DEVELOPED......,... 9,23 Ac. DEVELOPMENT LOTS ................ 5.04 Ac NEW DEDICATED R.O.W ............ 0.86 Ac OPEN SPACE ........................... 3.04 Ac TOTAL PARCEL AREA ............... 8.94 Ac TOTAL IMPERVIOUS AREA ........... 2.51 AC TOTAL TURF AREA ...................... 5.12 AC TOTAL WOODS AREA ................... 1.60 AC BMP MAINTENANCE <M�tnte,rarte�TTS(c8 G�'re '+�n� • Mowing of grass filter strips and bioretention turf cover At least 4 times a year • Sat weedin ,erosion repair, trash removal, and mulch raking Tvvice 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 re -treatment cells and inflow points Once eve 2 to 3 ears Re lace the mulch la er 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 ❑ 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 801bs/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 901bs/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 801bs/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). +r 0 0 6 0 'y O W Z 0 �} f7 v W I W � Z 2_ Q _ � ui Z tv 0 N Wi I J z w 0 �t 01 P, n0 � u JU M. SHIMP Li . 4 3 Tlo L V, m yr vs rn a> w w w oEEEEcn EEEE 0 0 0 0 D v U U U U O D 3 0 0 0 0 co 0o cr3 0o as .- Date 11f14 2017 Scale Sheet No. C 1 OF 15 File No. 17.014 1 I � ° TMP 56C-B-26A NfF WESNER DB 3303 PC 611 I r` PF 0 14.52' r / f ° l / EXISTING HOUSE TO REMAIN DURING CONSTRUCTION I J TMP 561,"'-B-26 �.r ... I TMP 56-45A2 1 - r° NfF FYE'rSNER �� j�,*�''' j f t` ' j ' �� NfF SANDRIDGE -f > WB 146 PG 614 ° 'ter J°? , t 7 ' i u/" r-J WB 129 PG 156 A, f 'i r` f .ram •.. , f t t l I i f� r ♦ i ! f 20' X 7' ACSA EASEMENT DB 4862 PCB .565 ,''� ' �,���♦, ..�Z" >,, ,---- ', Ej°°, t"E 98,14, N279.7E "E t � 77, LE ELI ,': l ``. % c Pane g � +�-0 r ORY' OU — �— ism � ��JTiASd HIN� PIN , (� I BLOCK /TBRii66S ON WOOD WALL •�/ r I BUII.DIN JC f BASEMENT TBR MAPS �1 / .• , 9 TMP 56C-C-6 f 't' ,�•.`..- ' I f I � 1 T>3R pY. 1 .ocusr ' N/F BELEW r' DB 2012 PC 716 It J i y I i' >' j _ . I `t ' 1 °_fl 'SON/ 279_74' o . .i i1--y--. Li t '\ ! — \}� PHI ( \'i. � � ITzi t' �44819Q9(I z l \ �, x 4 c x \\\ '♦♦l lie % I/ j l , \\ \ .�`� t r 1 it CONC. 8 TBR Faucet TBR ` `s!J I 4 BENCHMARK= / ! F I 1 1 \ \,�1 1G 1 \ ABAN & FFE 667.'64! G O 'i!t 1 IREI�d�• 11Y1�U4 .. G� 1 kiH ds 82.8 LF "' f .'i /°�' 1 7.277 AC. z ' o / OF (IE OHE OH i:' O 1BR {' (' m �TOXY POINT BUILD" \ g ` W ; TMP 56C-C-11 J ° 1 R NfF WITT ° f f !/-'"` % �'_ ! f-; .._..J / rr i o %B 49J�170 tQ Es w/_,} 1 j'\ CONCH ALK \ PAVED D 1 DB 1505 PC 731 ° "�,;' / r; rr 1 ,;' / / j �,\ 1 ABANDON / r i r J , i oa l' \ WATER _ ° '♦ t 1 (t f \ I \ o \ METER .` \ i `. •. `\ , _ �.a vp1 "r t ,18°(3 50"ll ` 279.82' \ w `, ./rr IF,_''.� ♦ �` r ✓'% *• w,..,, l ram' `. '� O I 8 ' �` ` e 08 50"W 279.83' ,. PAVE ACSA too PF FOUNDRONS SAN. E 'F OSy I; t ' BLO , ECT. ,� 1 > . \ `. ®� ._..,�``. INTERMITTE�tT� •titi r - e '\ TBR e � I 9 ` L T 4 `..a rx I -'� LOT 7 r®.- �� - .:� •, STREAM ` - \ PQ, 4 TMP 56D-4 4 �I III r \ r. l ` \ �ti ' i l �` WRO T IRON' FENCE l "�` NfF MORRIS o TMP 56D-D-7 �` �...,_ \ - `\ W/ RKEQ GRAVES t / NfF SNEAD I i DB 6 7 PG 34 I I rn DB 4171 PC 306 rein g� - ,•� e ` I 'BLOCK D SECT. 2 LOT 6 ; ✓ ° I ` , �` e .� ; ! IF F� ME f TMP 56D-D-6 ' 7I - `, r!�1.5' �, ,� IF @ 544.34' R° `\ \ �ti j t (h rv-I N F ROACH �!Ie i _t - \y ` Qo DB 2254 PC 508 - ` / , " �, > > 1 r-0 '-A- TMP 56D-5 I l i aAN � T � � � ' N LAYTON � < BLOCK D SECT. 2 i \ 5;5,.. r I' 4% j `' i ! l i� DB 614 PG 435, I € T LOT aJ ' �v``'--` �<--.''-*.. _., �.. a% �t ! j !t ty ) rt r, r i , }, m ) W. PAVW " TMP 56D-D-5 IF @ 244.43' NfF CARVER ` r ' DB 1360 PC 87 > BLOCK D SECT ' IF @ 44.42' 2 LOT 4 I i TMP 56D-D-4 f �min 1 .. `�, NfF FISHER °e -• BLOCK D SECT. 2 f DB 631 PC 497 LOT 3 I l ( 1 f� - - - - - - - - - - - - -- - - - kM1 d' TMP 56D-D-3 r 'IleAi \ — f NfF MACQ UEEN r vcE m� •. f w / DB 3777 PC 710 , - � � m � .� �. ;. t 1 ' LOT 7 • ` BLOCK D, SECT. 23 ( TMP 56D-7 " I LOT 2 IF BENT raa ; , Tr �- N/F PEMBROKE TMP 56D-D-2 > e,' F, .� �. 2 r 245.9. * IF @ 57.58'J DB 1861 PC 708 NfF WINSDR ` IF - - DB 4525 PC 5i3 > J , BLOCK D, SECT. 2 , LOT 1 ;IF BAS� ���_ 4760 PG 474 AMESTOW BLOC TMP 56D-A-5 BLOCK A, SECT. 2 r f/ - -JR, OAD N F RALSTON LOT 4 .44" ,1 5 _R W DB 4711 PC 692 TMP 56D A-4 rf TBR f > N F PITSULKA r' °<DB 2461 PC 290/ so,T C VEE M _ 644.01 BOUNDARY" LINE T4BLE Line Direction Length L1 N 30'03'00" W 29,80' L2 N 79`36'31" W 12.77' 13 N 35°23'20" W 36.01' L4 N 14'16'35" W 35,6S L5 N 13°54'31 " W 32.33' L6 N 11 °31'36" 4V 16.92' L7 N 49'51'24" E 6.72' L8 N 30°12'54" 4V 36.71' L9 N 35`02'17" W 25.10' L1Q N 26°13'04" E 17.94' L11 fed 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 PI 25'39'33" W 25,50' -16 N 52'24'38" E 20 60' L17 N 02°39,30" E 23.49' L18 N 3319'53 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' L 2 4 N 44°26'07" W 22,02' L25 N 40°42'52" W 35.67' L26 N 6117'45" W 17,53' L27 N 33'16'36" W 29.99' L28 N 33`05'56" W 1.82' CLAUDUIS CROZET�- SOIL TYPE BOUNDARY OVERLAND FLOW DIRECTION 0 50 100 150 Scale: 1 "=50' omo 2 I° z a w W ¢ W vl z 2 0= IL z o N W F- Q W V) J z w 01 t sc�c3c�ca 6 Q 0 O a U) o=�=� g pay 3 3 3 3 Q O O 0 O CJUCaU as C i... C7 r13 I`'. -I' -0- CD C:) CD eta co m N N Gf C7 Car +. 0©®©Il Date 1 1 14/2017 Scale Sheet No. C2 OF 15 File No. 17.014 40 0 40 80 120 MMENEI Scale: 1"=40' 0 Z W w Z z W z z 0 0) w [- < D > W Ij J V) > z w 0 1 N 0 H C M. SHIMP L' N . 45 L83 PARK CLAUDUIS CROZET EEEE E E E E SIGFff 015rMCE ESkfr 0-0 >1 6 >1 0 >1 0 WW =3 3 D :3 0 UUUCJ 0 0 0 WP-2 OVERLAY 00 00 00 00 T00C3 D CD ' Lo (DCD Im' C CA 911mmull z > z D 0 0 w LL 0 z -j > Date 11/14/2017 Scale 1 -40 Sheet No. C3 OF 15 File No. 17. gj_4� i C)C)� r I f-, > rl-) �4- Lo i SPACE �8' "MT NV - NEW TRf6INE 34 3. 'n B IFA IV A ac Z NEW TREELINE 14 z, Al/ ------ ------ ------ t , f �J ���'� 30 I-KUN I LOAD E JC 710 407XJ,, " 0 F QfTCH'4 SAN MH BrkWd-2-7 N- MH,' BrkWd,4-6 NEW TREELINE NO HEAVY CONSTRUCTION 0 EQUIPMENT WITHIN V 6' OF EX. FENCE 30 0 30 60 90 mr-w—■mr-m =009 LIE-■BLIKA Scale: 1"=30' 0 Lo 0 Z NN (r W L w Z z w (L 11 tIll z 0 W z V) 0 E E E E 0 0 0 0 U3 C) u C) C) co co 00 00 Do r") (D r- CD d- CD -4- 05 910mmull aws Date 11/14/2017 Scale 1 "--30' Sheet No. C5 OF 15 File No. 17.014 PROJECT DESCRIPTION, GENE 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 CLUSTERj'iSUBDIMSION. THE TOTAL AREA OF DISTURBANCE IS 7.61 ACRES. THE PROJECT INVOLVES THE FOLLOWING WORK ACTIVITIES: 1. THE CONTRACTOR SHALL OBTAIN ALL LOCAL AND STATE EROSION AMID SEDIMENT PERMITTING REQUIREMENTS AND MAINTAIN ALL EROSION AND SEDIMENT CONTROLS IN ACCORDANCE WITH THE PERMIT REQUIREMENTS. I�I 2. INSTALLATION OF PERMANENT EROSION AND SEDIMENT CONTROL MEASURES AS SHOWN ON THE PLAN AND DETAILS. I'' 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 3 DEVELOPED SINGLE FAMILY LOTS WITH FOREST AND TURF ZONED Ii ADJACENT PROPERTIES [ ! THIS PROPERTY IS BORDERED TO THE EAST, WEST, AND SOUTH BY SINGLE-FAMILY LOTS. PARK ROAD FORMS THE NORTHERN BORDER. ICI OFFSITE AREAS: �kj 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, HSC B, 17 - CRAIGSVILLE LOAM - HSC A 37C3 - HAYESVILLE LOAM - 7 TO 15% SLOPES, HSG B, SEVERELY ERODED 37D3 - HAYESMLLE LOAM - 15 TO 25% SLOPES, HSC B, SEVERELY ERODED CRITICAL AREAS i THE CRITICAL AREA WITHIN THE SITE LIE WITHIN THE 100 FOOT STREJIBUFFER. CONTRACTOR SHALL ENSURE PROPER INSTALLATION AND MAINTENANCE OF PERIMETE,, CONTROLS ACCORDING TO THE PLANS TO PREVENT POLLUTANTS AND SEDIMENT FROM ENTERING TIE 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 CONSTRUCTIO p, ENTRANCE, AS NECESSARY, THAT MEETS THE REQUIREMENTS OF STD. AND SPEC. 3.02 AND COFORMS WITH THE REQUIREMENTS OF THE EROSION & SEDIMENT CONTROL PLAN. 1 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,11NTERCEPTING SILT -LADEN RUNOFF BEFORE IT IS DISCHARGED FROM THE SITE. THE SILT FIENCEIISHALL 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 §'VTRUCTURE. MAXIMUM EFFECTIVE LIFE IS 18 MONTHS. STD. AND SPEC. 3.09, SHE 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 h T FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 14 DAYS, TE PORARY SEEDING SHALL BE APPLIED IN CONFORMANCE WITH STD. AND SPEC. 3.31, 1 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. I 9. DUST CONTROL: CONDUCT DUST CONTROL OPERATIONS NECESSARYITO 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 OUTFACL OF CONVEYANCE CHANNELS, CULVERTS, AND STORM SEWERS IN CONFORMANCE WITH I�ISTD. AND SPEC. 3.18. OUTLET PROTECTION SHALL BE INSTALLED WITH ACCOMPANYING STORM SEWERS AND SHALL BE INSPECTED AFTER EACH RAINFALL EVENT AND REPAIRED IF NECESSq,,,RY. ANT SEDIMENT BUILD UP SHALL BE REMOVED. PERMANENT STABILIZATION AND SEQUENCE OF CONSTRUCTION THE FOLLOWING ARE THE PROPOSED MANAGEMENT STRATEGIES AND D'I'TAILED SEQUENCE OF CONSTRUCTION: STAGE 1 1. INSTALL CONSTRUCTION ENTRANCE OFF PARK ROAD. RUCKS SHALL BE CLEANED PRIOR TO LEAVING SITE. 2. INSTALL SILT FENCE, DIVERSIONS, AND SEDIMENT TRAPS. STAGE 2 E CONTACT THE ENGINEER AND ALBEMARLE COUNTY FOR, INSPECTION AND APPROVAL OF ALL E&S CONTROL MEASURES. STAGE 3 11 1. UPON APPROVAL OF E&S CONTROL MEASURES, BEGIN'ISITE WORK. 2. INSTALL STORM SEWER D1-D3 FIRST. ,11 '' 3. MAINTAIN PERIMETER CONTROLS UNTIL ROAD CONSTRUCTION IS COMPLETED AND SITE HAS ACHIEVED TEMPORARY STABILIZATION. 4. INSTALL ADDITIONAL CONTROL MEASURES AS SHOWN )N SHEET C8. ��INLET 5. AS STORM STRUCTURES ARE CONSTRUCTED, INSTALL AND OUTLET PROTECTION. STAGE 4 1. AS AREAS ARE BROUGHT TO GRADE, APPLY MULCHIN, TEMPORARY SEEDING AND PERMANENT SEEDING. 2. ESTABLISH AND MAINTAIN PERMANENT STABILIZATION,''',IINCLUDING VEGETATION OF ALL SLOPES AND GRASSED AREAS. 3. AFTER COMPLETION OF STORM SEWER INSTALLATION A, ND SITE STABILIZATION, 11 CLEAN OUT ALL SEDIMENT BUILDUP IN THE STORM SEWERS AND 60 PRETREATMENT PIPES, 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 9VAC25-870-65-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. 1.60 ACRES OF SWIM FOREST AND OPEN SPACE SHALL BE DEDICATED AS PART OF THE SWIM 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). BMP NOTES: 1. BMP A IS A LEVEL 1 VRRM COMPLIANT BIOFILTRATION BASIN WITH A CDA OF 2.70 ACRES. IT IS LOCATED AT COORDINATES 3&062030,-78.696083. BMP A DESIGN VOLUME=TV=4764 CF DEPTH OF STONE=3.5' DEPTH OF MEDIA=2.0' PONDING DEPTH=0.8' MEDIA AREA=2000 SF TREES IN BIOFILTER=16 SURFACE COVER: HARDWOOD MULCH PRETREATMENT WAS DESIGNED TO HOLD 15% OF TV = 715 CF. 2. BMP B IS A LEVEL 1 VRRM COMPLIANT BIOFILTRATION BASIN WITH A CDA OF 4.23 ACRES. IT IS LOCATED AT COORDINATES 38.061515,-78.695177. BMP B DESIGN VOLUME=1 xTV=71 OO CF DEPTH OF STONE=3.0' DEPTH OF MEDIA=3.0' PONDING DEPTH=0.7' MEDIA AREA=3000 SF TREES IN BIOFILTER=26 SURFACE COVER: HARDWOOD MULCH PRETREATMENT WAS DESIGNED TO HOLD 15% OF TV = 1065 CF. BICFILTER 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 ::1 CONTRIBUTING DRAINAGE AREAS HAVE BEEN ADEQUATELY STABILIZED WITH A THICK LAYER OF VEGETATION AND EROSION CONTROL MEASURES HAVE BEEN REMOVED. :1 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. __1 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. _�J CHECK THAT OUTFALL PROTECTION/ENERGY DISSIPATION MEASURES AT CONCENTRATED INFLOW AND OUTFLOW POINTS ARE STABLE. ::1 FOLLOW-UP INSPECTION AND AS -BUILT SURVEY/CERTIFICATION HAS BEEN SCHEDULED. GPS COORDINATES HAVE BEEN DOCUMENTED FOR ALL INFILTRATION PRACTICES ON THE PARCEL. 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 dorma nt or undisturbed for longer than 14 days. Permanent stabilization shall be applied at areas that are to be left dormant for more than 1 year. 2. STABILIZATION OF SOIL STOCKPILES: During construction of the project, soil stockpiles shall be stabilized or protected with sediment trapping measures. The applicant is responsible for temporary protection and permanent stabilization of all soil stockpiles on site as well as soil intentionally transported from the project site. 3. PERMANENT VEGETATIVE COVER A permanent vegetative cover shall be established on denuded areas not otherwise permanently stabilized. Permanent vegetation shall not be considered established until a ground cover is achieve that, in the opinion of the county Inspector, is uniform and mature enough to survive to inhibit erosion. 4. TIMING & STABILIZATION OF SILT TRAPPING MEASURES: Sediment basins and traps, perimeter dikes, sediment barriers and other measures intended to trap sediment shall be constructed as a first step in any land disturbing activity and shall be made functional before upslope land disturbance takes place. 5. STABILIZATION OF EARTHEN STRUCTURES: Stabilization measures shall be applied to earthen structures such as dams, dikes and diversions immediately after installation. 6. SEDIMENT TRAPS AND BASINS: A sediment basin shall control surface runoff from disturbed areas that is comprised of flow from drainage areas greater than or equal to three acres. The sediment basin shall be designed and constructed to accommodate the anticipated sediment loading for the land disturbing activity. The outfoll 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 stru ctu re. 9. WATER SEEPS FROM A SLOPE FACE: Whenever water seeps from a slope face, adequate drainage or other protection shall be provided. 1 O. STORM SEWER INLET PROTECTION: All storm sewer inlets that are made operable during construction shall be protected so that sediment -laden water cannot enter the conveyance system without first being filtered or otherwise treated to remove sediment. 11. STABILIZATION OF OUTLETS: Before newly constructed stormwater conveyance channels are made operational, adequate outlet protection and any required temporary or permanent channel lining shall be installed in both the conveyance channel and receiving channel. 12. WORK IN LIVE WATERCOURSES: When work in a live watercourse is performed, precautions shall be taken to minimize encroachment, control sediment transport and stabilize the work area to the greatest extent possible during construction. Nonerodible material shall be used for the construction of causeways and cofferdams. Earthen fill may be used for these structures if armored by nonerodible cover materials. 13. CROSSING A LIVE WATERCOURSE: When a live watercourse must be crossed by construction vehicles more than twice in any six month period, a temporary stream crossing constructed of nonerodible materials shall be provided. 14. APPLICABLE REGULATIONS: All applicable federal, state and local regulations pertaining to working in or crossing live watercourses shall be met. 15. STABILIZATION OF BED AND BANKS The bed and banks of a watercourse shall be stabilized immediately after work in the watercourse is completed. 16. UNDERGROUND UTILITIES: Underground utilities shall be installed in accordance with the following standards in addition to other criteria: a.No more than 500 linear feet of trench may be opened at one time. b.Excavated material shall be placed on the uphill side of trenches c.Effluent for dewatering operations shall be filtered or passed through approved sediment trapping device, or both, and discharged in a manner that does not adversely affect flowing streams or offsite property. d.Material used for backfilling trenches shall be properly compacted in order to minimize erosion and promote stabilization. e.Restabilization shall be accomplished in accordance with these regulations. f. Applicable safety regulations shall be complied with. 17. CONSTRUCTION ACCESS ROUTES: Where construction vehicle access routes intersect paved public roads, provisions shall be made to minimize the transport of sediment by vehicular tracking onto paved surfaces. Where sediment is transported on to a public road surface, the road shall be cleaned thoroughly at the end of each day. Sediment shall be removed by shoveling or sweeping and transported to a sediment control disposal area. Street washing shall be allowed only after sediment is removed in this manner. This provision shall apply to individual lots as well as to larger land disturbing activities. 18.TEMPORARY E&S CONTROL MEASURE REMOVAL: All temporary erosion and sediment control measures shall be removed within 30 days after final site stabilization or after temporary measures are no longer needed, unless otherwise authorized by the local program authority. Trapped sediment and the disturbed soil areas resulting from the disposition of temporary measures shall be permanently stabilized to prevent further erosion and sediment. 19.ADEQUACY OF RECEIVING CHANNELS: Properties and waterways downstream from the development site shall be protected from sediment deposition, erosion and damage, due to increases in volume, velocity and peak flow rates of stormwater runoff for the stated frequency storm of 24-hour duration. 0 2 (0 0 0 0 6 I z o ff N W W ItZ Z vW ,I Z 2 0 = z Z F V) D N 0 �i N N > �i in� 7 w 0 6 l d 0 T N U v JU N M. SHIMP le. No..45183 iq Q 0I� Date 11142017 Scale Sheet No. 06 OF 15 File No. 17.014 A(� STAGING INSTRUCTIONS r 1. MAINTAIN ALL PERIMETER CONTROLS UNTIL ROAD IS COMPLETED AND SLOPES ARE STABILIZED. 2. HOUSES SHOWN SHALL BE CONSTRUCTED LOT -BY -LOT USING SSMH REQUIRED SINGLE-FAMILY EROSION CONTROL METHODS. EROSION j CONTROL MEASURES SHOWN IN THIS PLAN ARE INTENDED TO BE USED DURING MASS GRADING, ROAD CONSTRUCTION, UTILITY INSTALLATION, AND BMP INSTALLATION. "'', , Tr f';`;I •r 3. ANY SOIL STOCKPILES SHALL BE SURROUNDED WITH SILT FENCE AND SHALL HAVE TEMPORARY SEEDING IF LEFT FOR MORE THAN 7 DAYS. SEQUENCE OF CONSTRUCTION - STAGE 1 1. INSTALL CONSTRUCTION ENTRANCE OFF RTE 250. TRUCKS SHALL BE CLEANED PRIOR TO LEAVING SITE, 2, INSTALL SILT FENCE, DIVERSIONS, AND SEDIMENT TRAPS AS SHOWN ON THIS SHEET, 3. CONTACT THE ENGINEER AND ALBEMARLE COUNTY FOR INSPECTION AND APPROVAL OF ALL E&S CONTROL MEASURES. 4. UPON APPROVAL OF E&S CONTROL MEASURES, BEGIN SITE WORK. 5. INSTALL STORM LINE D (SEE PROFILE ON C15) TO CHANNEL OFFSITE RUNOFF. CULVERT SHALL BE INSTALLED WITH INLET AND OUTLET PROTECTION BEFORE JAMESTOWN ROAD CONSTRUCTION CAN BEGIN. 5, MAINTAIN PERIMETER CONTROLS DURING CONSTRUCTION. - I SSMH �''' ,. l /t - - --- -- - �,'`� i LIMITS OF - € ff• f,` / , \ \ ` \ �'�` i DISTURBANCE SF Tj -670 �`'-�,'�''' /' ! l!1 i �` ;``/,v •'/ �J ,, `�j- ------ .'' TRAP; —X Alf_ -- -- r � � \ 1 \� I\ `�I DEMO ol DEMO I s'�/~f I, ', / /'ry•-`y; f` QQ��' I j I I � I .� 'i j� ( � � �,��' t0� 2 i " - !J'' JIIN9i II %{~ ) I, t �4_. • - ` _ \ rnj I — ass f -- 4 I U I X I L6T 7 \ �. LOT '� • • ._M ;" a oI u LOTS ) ( l \\ LOT `5, L 4 LQf 3 L�TT 2LOT 1Q I j TRAP 1I I �Im _A DRAINAGE �,;, AIREA= 2.91 AC \ ti ` DEMO I y�i T�NEW \MAN ' E ABANDON EX: MH I t I DEMO EX. H USE, , b I i I SHOWN FOR `\ i,\ ` SAN MAIN t, fDRIVEWAY AND,I c� OPEN SPA E 12 �'p )( wa I • i REFERENCE ` TYP. 4 STA ING AND RE / �I IC / I r(� i � \ \ I \ I \ 91 /PARC� B I / I �', \ \ STOCKPILE AREA 91 Al NEW CURB \ I \ ,NEW MH' I` �.,�A l s n.. E f - �, �; �, LOT 11r \ OCATI0�1 ' ; j f i OZET CbURT j'./ ! ' .�'.`''•,,..- r "'� /— � .�r f '1 ' ,' i y` j I y 1 \ , \ - ' � 1 \ � 23�AiP, PUBLIC ROW �i `� \`, —•-• �� I Ar o t \ H. ADT = 210 \ TRAP D.A. 6 1 i t'ol o j LAAITS OF /DkST CE / t \ -�_\ OPEN SPACE' \ DLOT 1 /•' - '�� Cd�JT SLOPE TOtt LOT 12` -- \ `--- ; _ \ I y, `e SF DR AIN\\DIVERSI00N •k®1r �ri - - - - - '` - T TRAP ' 1` I - - \ T \.. ..• y \ - o TRAP 2 4 .\,* I�•� _ LOT I NAGS s\� .•.., � �AREA= J .t DEMO LOT 20 t LOT BODARY ` \ CWD fl TRAP 2 � �I�L 1^ l cry t { 6 j ' '�^- ; 1 , P S• �p77It o \ 1 LOT 'f ' ` LOT)' (5 irz o Q TP OR EX. SAN SEWER 1 } ' r ; , • J (TYP.) moo, / ./ • . �. .TA 11 � . t / } LOT 1� / CWb _\) m- LO 11b - - D1 ,omay' LOT 17 i NO HEAVY t _ CONSTRUCTI01� ET ""•...* \ EQ�}IBMENT WITiIN ��j f g� d \ D GWD 6' OF EX. FENCEt`\ C 8 i / "f INSTALL CULVERT } 4 BEFORE JAMESTOWN f� RD. CONSTRUCTION CONTRACTOR SHALL l BEGINS. USE INLET %k ;' AVOID CUTTING OR PROTECTION. L DISTURBING TREE ROOTS DURING CONSTRUCTION I SAFETY FENCING t I SA 4 SHALL DOUBLE AS TREE PROTECTION FENCEING ALONG ROW BOUNDARY �. 4- . 1 SA JAMESTOWN RD ENTRANCE SHALL h@•, �1 1NV OUT:BE CLOSED DURING 1 CONSTRUCTION 642.64 \ P4 FTC ifs - -, ,t .,.. EX. WATERLINE C'LAUDUIS CROZET PARK m SOIL EROSION & SEDIMENT CONTROL SYMBOLS SYMBOL N0, TITLE KEY [DRAWN TO SCALE] TS PS M DO 3.02 CONSTRUCTION ENTRANCE CE 3.03 CONSTRUCTION ROAD STABILIZATION CRS 3.05 SILT FENCE SF 3.07 INLET PROTECTION IP 3.09 TEMPORARY DIVERSION DIKE DD 3.13 TEMPORARY SEDIMENT TRAP ST 3.18 OUTLET PROTECTION OP 3.31 TEMPORARY SEEDING TS 3.32 PERMANENT SEEDING PS 3.35 MULCH MU 3.39 DUST CONTROL DC SAFETY FENCE TREE PROTECTION FENCING LIMITS OF DISTURBANCE SEDIMENT TRAP DRAINAGE AREA 0 0 • Z Nw „z W WIL Z 2 o0V) rz 7 A D ij J �y 1 W 0 W N U mail Date 11/14/2017 Scale 1 "-40' Sheet No. C7 OF 15 File No. 17.014 SEQUENCE OF CONSTRUCTION - STAGE 2 1. MAINTAIN PERIMETER CONTROLS, INSTALL NEW CONTROL MEASURES AS SHOWN. j f 2. AS STORM STRUCTURES ARE CONSTRUCTED, INSTALL INLET AND OUTLET ' PROTECTION. _ AFTER TRAP 2 IS ENT CELL B r CONTRACTOR MAY INSTALL GRAVEL PRETREATMENT _ 3. N REMOVED. CLEAN OUT CELL AFTER SITE STABILIZATION, MINIMIZE DISTURBANCE 4. BIOFILTERS SHALL NOT BE INSTALLED UNTIL SITE IS STABILIZED. WITHIN BMP FOOTPRINT 3. SITE MUST BE FULLY STABILIZED BEFORE REMOVAL OF SILT FENCING. CZ4. AS AREA 1` 1 ` ` s S ARE BROUGHT TO GRADE APPLY MULCHING TEMPORARY SEEDING , I , �`' AND PERMANENT SEEDING, I, ,{ f '5 4t 4 + t I DO NOT INSTALL BMP'S UNTIL J J, ENTIRE SITE IS STABILIZED f Jr l J i F a ,��'/ .0 3..•',- rAl - - _ - •r -.z' f> f ( r t b 4 , ^` - -- _ d6l" s 74 PINE 1 `e a - ,.:., 1 3 I;' 7` 'i ,: ;1.+ �� _a..: `aa•- s' q/ -',„ - - - -, PINE _ ( NEW Ha (+ .+a.i r ; •.I _ ,;' <n. /'y \ I a'i rr i i f TV , i TR E , p, LOCATIONS FENCING SHOWN FOR �,� SHALL AS r= x .. ,� u, . " ,1 `�. .�° � j ; I 'r r. NEW PERMANENT � � , /'- ., 1� t h. r' REFEREN E I, � s TREE PROTECTION �: DIYTCH TYp. r � } � a. ,: r / - 1 mo��S 1 .�. ,.,.: � tt :at f^,; :1 I i 1 \ f I p 67B, O � I THIS `, _,, FENCING ! -� . 1 .. , `, I AREA I • I � � IN MINIMIZE DISTURBANCE ! f ,�,q=z !t, I 3 1 L;OT & J j cz I ! OT LOTS 7 I .Q ; WITHIN BMP FOOTPRINT f i Yj J s. T -LOOT 4 LOT 3 LOT 2 LOT 1 _.w. LOT.. (0 z i x S TRAP 1 � DRAINAGEQJD : f f EA- C � x,• r t 1 F2 lI 2 91 NEON SAN HI 1 pp e r' - J f a ; , f a` OP,N SPACESEWER r. 2q n, J ./.. PARCEL IVR f i , r � /` ,� " Q` � ....� w \ I ,• � r IN" SOIL EROSION & SEDIMENT CONTROL SYMBOLS SYMBOL NO. TITLE KEY 3.02 CONSTRUCTION ENTRANCE CE 3.03 CONSTRUCTION ROAD STABILIZATION ORS X 3.05 SILT FENCE SF 3.07 INLET PROTECTION IP 3.09 TEMPORARY DIVERSION DIKE DD [DRAWN TO SCALE] 3.13 TEMPORARY SEDIMENT TRAP ST 3.18 OUTLET PROTECTION OP TS 3.31 TEMPORARY SEEDING TS PS 3.32 PERMANENT SEEDING PS 3.35 MULCH MU [ 3.39 DUST CONTROL DC SAFETY FENCE TREE PROTECTION FENCING LIMITS OF DISTURBANCE .0 0 ,0 :0 Scale: C� 0 ° CO rI w �Z �w I w Is Z:2 0 e D N :5 N r >> a w w 0 Q a� OP _fir r} JLTSTI M. SHIMP Die 1�o.,45183 ,r J 0 C Q E N E V' � E E E cii E_00E ,= o 0 0 o a UCasJC7C, ze c ( Q o 0 0 0 �'.J` ' ,- Z Qd+co 00 ao 00 oa I o d- p tv7 Ca CD � .- - �-C-jn-d-Lo z z 0 0 LL z _I Date 11/14/2017 Seale 1 "= 40' Sheet NO. C8 OF 15 File No. 17.014 J - f • T i� �� bt I j � J + NEW TRE£LI r,. eae. _f �� ,: +' ••� ��'Y�.F ?.r�.�'1 ._•i^ .. .. .. " i 1 I � � 4 1 aa' STREAM . '�t1 t nl lrrrn LEGEND 100' BUFFER DISTURBANCE „r ot fi v , r t r.- 1 <: •#- -. , ., _ ..,. NEW ✓ + - ., -. , « d .•.,. d _ °• , { TREE N. i z 1 ALBEMARLE COUNTY MITIGATION REQUIREMENTS_ C9 Nat To Scale BUFFER AREA DISTURBED: 0.82 ACRES DISTURBED WITHIN 100' BUFFER MITIGATION PLANTING CALCULATIONS: ® 35,600 SF (0.82 AC) AREA DISTURBED WITHIN STREAM BUFFER M 71,200 SF (1.64 AC) REQUIRED 2:1 RATIO REPLANTING AREA a 35,600 SF (0.82 AC) AVAILABLE BUFFER REPLANTING AREA MITIGATION OPTION 1 C REQUIREMENTS: 700 CONTAINER GROWN SEEDLINGS/ACRE @ 2:1 RATIO = 700 SEEDLINGS x 1.64 AC = 1148 TOTAL CONTAINER —GROWN HARDWOOD AND PINE SEEDLINGS. MITIGATION OPTION — CHANNEL RESTORATION: 1 LF RESTORED CHANNEL PER 100 SF DISTURBED BUFFER 356 LF OF CHANNEL TO BE RESTORED MITIGATION STRATEGY: SPLIT MITIGATION OPTIONS 50:50. BOTH PLANTING AND CHANNEL RESTORATION SHALL BE EMPLOYED DUE TO LACK OF PLANTING SPACE. MITIGATION PLANTING AREA WITHIN THE STREAM BUFFER SHALL HAVE V =574 PLANTINGS. NO SEEDLINGS SHALL BE PLANTED WITHIN ACSA SANITARY EASEMENTS OR DRAINAGE EASEMENTS. =178 LF OF ONSITE STREAM CHANNEL SHALL BE RESTORED. BUFFER PLANTING INSTRUCTIONS: PLANT 574 CONTAINER —GROWN SEEDLINGS AT 8'X'8 ON CENTER ALONG WOODLAND EDGE. USE SCHEDULE SHOWN BELOW FOR SPECIES SELECTION. SEEDLINGS SHOULD BE PURCHASED IN BULK FROM THE VA DEPARTMENT OF FORESTRY. SPECIES CAN BE SUBSTITUTED FROM ALBEMARLE COUNTY APPROVED PLANTING LIST. SPECIES AMOUNTS CAN BE CHANGED PER AVAILABILITY OF SEEDLINGS. CONTRACTOR SHALL BEGIN PLANTING AFTER EARTHWORK IS FINISHED AND SHALL COMPLETE PLANTINGS WITHIN 6 MONTHS. SEEDLINGS SHALL BE PLANTED 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 socchorum Sugar Maple 50 Grown Container Quercus palustris Pin Oak 50 Grown Container Nyssa sylvatica Blackgum Tree 50 Grown Container Betula nig ra River Birch 75 Grown Container Taxodium distichum Bald Cypress 50 Grown Container Salix nigra Black Willow 50 Grown Container Alnus serrulata Smooth Alder 75 Grown Container Holesia Carolina Carolina Silverbell 50 Grown Container Amelanchier x grandiflora Autumn Serviceberry 50 Grown Brilliance Autumn Brilliance' 575 CIL SEE PLANS FOR EXACT LAYOUT. SPACE PLANTS AS SPECIFIED IN PLANT LIST I OR AS SHOWN. ADJUST SPACING AS NECESSARY OR AS DIRECTED BY LANDSCAPE ARCHITECT. MULCH 2" DEEP IMMEDIATELY AFTER --" _. _ ,:,.:, /• 'f t; it r- s r , : - -_ a :::.:a• THOROUGHLYING AND WATER TREE TIES, SEE SPECS. CHANNEL RESTORATION: -I i t \ ; .. , , { L ----- ----- { .� 1'%:. :i ; 1-1f2" SQ. OAK STAKES �». � .�.:.: � � r — r-- � .. PLANTING PIT. L178 LF OF EXISTING ``� + � ' � � , { :,"' { `, " � � ( — � °, ( : ;' '•:1. : • SET 180 DEGREES I' _' .:• APART PREPARED SOIL FOR SHRUBS ONSITE STREAM „ ,+ -y ( x `f' I +� ;:.•z.' \}+ CHANNEL TO BE a y ( r FINISHED GRADE RESTORED. SEE SHEETS { { LY 2 OF MULGH AFTE 1 APP C10C11 FOR DETAILS. �,� *� � � I I.:•.:•.. ,' PLANTING AND WATER THOROUGHLY ;�,; .,,� ,� , �.i � I •3 � f •,•.: ,� a Y � f '`�.._,- � , i," � ...e, p• i { ! I ,.• ::•.�.: 'i �. d, � 4" COMPACTED EARTH WATERING BERM DISTURBED AREA EXISTING GRADE IN BUFFER (TYP.) � t x, 9a L d r.� ,d � PLANTING PIT SEE SPECS FOR ', ,, i � , ' i° f EXACT REQUIREMENTS, PLANTINGIL } { F d r�/ ,,+ `� ! ' d SOIL, AND PLANTING SO AMENDMENTS. 1 . ` ; t ••• ' � B RLAP &STRING � z 1 V U FROM TOP 1/3 OF ROOT BALL \ K • s y ES SOIL BALL DIA.M(MIN) x UNDISTURBED j I � l NIL NEW TREEUNE -- -- --� f ON FENCING (TYP) 2 TR_EE PLANTING DETAIL E, — —� — -- 9 Not To Scale III : � ::: •: .::. .. .....::. SOIL SURFACE - ROUGHENED TO BIND NEW SOIL - 0 C) O 0 � U z NW ^ Z W z 2 i N N y` f— W N > g W Q 0 w it 4 oz N U l JUS I M. SHIMP SET SHRUB PLUMB. TOP OF ROOTBALL SHALL NOT BE MORE THAN 1" ABOVE FINISHED GRADE REMOVE BURLAP FROM TOP 1/3 OF ROOTBALL 3" TALL WATERING BERM r-FINISHED GRADE r3� SHRUB PLANTING DETAIL �Q Not To Scale fic. No. 45183 0 E E E E "- 'EEEE 0 0 0 0 1� �C�Ut)CJ 0 0 0 0 C c.)Ucaca 7 m Co K) r- ®Q L000�C14 C)C)Q- mom '-d ,A . hh . J\ . ....... w LOG 2 7BIR f x x X x 1 X X\ •x X i x x x x x U�� x -. . x y , .;.. :. x x x x { x x x x y a" x i 9 x 1': _ x x s.' a x a YaY Xr Y Y `i X ': F -.8 E X x X x ��. ._ x x x R L f h � Q 1 / , , 8.. \ i x a. r 1 / X I 1 \ r x x r 4 \ is �r ` X X , x =.r a ! / / 3 `\ x. X m. / : 1 _ \ \ ! r 1` `E WF. .Y' / 1 fjJ/ i 1 n r. ............ ................. K .... / I , .;,,...,,.:R L L K ..... .............. ........: :�-� =�• .«rs, \ / \ �� -.. N / \.... ........:.. ',`,' / \ / .. �� k / l \ k / \ / / \ / x x RELOCATED�.._ -' \ ti / \ yk \ K �.::..-::' .... SNAG � � u L .-•-•':..,....: f - / / aT .,.-. :...I ., .......-........ X —- F \ a— \�����K��� ............. .... .... .r.. `X"' ..�.�.-�.,i�' ,u,,.:.,..a X :,gym — �. , .✓ .,C . , / \, f K"~ III -N • ,. - `X X \ 1. �i / v 4 f , ELOCATED LOG 3 x „ x -- --- - �_`_ �-(� ,"�, :..: -' ._._---- \" / , ✓ 1 / . /.. / / .::�., , `.. \ \ ,�` �\ ` \ ;{ X ' X L �. is Y. _ "d _ X X ` '* ,rt r,i: fi' -- J .y \ - `-../ \i { '`\ - \ \/\ \ V}\\\ ' \.\ J \� ;,i X X %4 r,.-d'' _ >. `� F X ^' `C X X` ,< 'f. Y .,: X % ;i :i .. - —. .+.. / - —,_ / x x /X �\'�/ \ F •�'��\'"'� `\ ` , \ � f' \ /Ili .��� \. , ^�...,,,,re` x x �: X r: \ 3 / \` /. I x\ x x /I ,r / , /� \ {yI / " TREE 70 \ i ; %�` / x A / BE REMOVED y: , x „d<° „�"` / // �" ✓q� .r r i �g�+ �:� �': y. a \\/\ \. \ \ \ ry ,,, x.*awew� ,u .m �� .<. �.v_«vm+...,v.wn.�m.m.,r.s•^�.*^"""rv,.m,..m-,. , l w n� r \/ y \/ ti , a, d T,a. I a+oar.=` 1.1i 7M� - / 10 0 10 20 30 Scale: 1"=10' 615 1 PLAN SHOWING CHANNEL CROSS SECTIONS_ C10 S— a e: 1*=10' _... , ... _ r—EX. GRADE NEW GRADE ri'�CROSS SECTION 1 REGRADING 10 Seale: Vert. i'o- Horiz. 1"=10' 620 615 i IN we ,/"-rNEW GRADE 625 M" - - 620 620 620 f, _w_ ,_.. _.-_ _._ w _..._..,.. _,.w.. .. .........___... _,...,..,. , ..,,,,,. ,�, �.,,,. , ._..... ... .. .... .... . .....�....I # .,.___,. ..........�.�:, EX. GRADE615 615 ... ,� _,u.... ,,....,..,._ ,.....,,._,. ._._._.,., �_..,..,w_._._•.. :.�..^..... NEW GRADE f i i - -- - -- yf -- - — — - 610 61 -- 1 - — `— REGRADE SLOPES 3:1 61 �t REGRADE SLOPES 3 t RIP RAP f}N BOTTOM _. ....... ,_.,......... ... .... . .__ .............. . I. ,...._... _ ,,Y..__.. _ _.... - _... ...._..1.2.,.OF..CHANNEL.--SIDES-,..-,._.,.,. --1Y -GF--CHANNEL-SIDES-- - --� 605 605 1,--- — -- --. --- — -- ---- -- — — 605 CROSS SECTION 2 REGRADING Scale: Vert. i"=5' Horiz. 1"=10' 6DY+ao - - CROSS SECTION 3 REGRADING I;1 Scale: Vert. 1"=5' Hariz. m IN W e 60Y+00 �5CROSS SECTION 4 REGRADING C10 Seale: Vert. 1'=5' Hadz. 1"=10' LEGEND LOWLAND PLANTING AREA W /� \ LIVE STAKE PLANTING AREA RIPARIAN PLANTING AREA FOREST EDGE + + PLANTING AREA + + 3'-4' CHANNEL BOTTOM 625 C.. e 615 1 FXISIINR SPFCIFS, SIGN I ABB. SCIENTIFIC COMMON AR Ju9 Ian sni9ra black walnut A Acer maple X LT Liriodendron tulipifera tulip poplar W RP Robinia pseudoacacia black locust N FG Fagus us 9 randifolia Amer ican beech A QP Quercus polustrus pin oak • PO Platanus occidentalis sycamore 0 PS Prunus serotina black cherry El PA Polystichum acrostichoides christmas fern OTHER SNAG/STUMP FLAG LOG SEE SHEET C11 FOR PLANTING NARRATIVE, DETAILS AND SCHEDULE 0 0U � U �TT,,, Z N W -� w ^ Z 4 z I W aC Z G z a l- Sit D �' 2 N W �- 4 _ > - w Q W a Q o I 4 � �i J M. SHIMP Li . No. 45183 �S10NAL �' ' �i ar u� rn crs �E;_EE J -> O O O 4 VUUUU Q IL C? O O O C.) C-) C-) C-) ON a0- flo ca r7 � -3- ®• C) Ca CD r- Ca Q 0 z U z 0 0 L Uj LU �. Date 1 1 f 14,/2017 Scale 1 "=1 0' Sheet No. C1 0 OF 15 File NO. 17.014 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 whet all plants are installed at the overall spacing range listed and specified on the tables. Spacir 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 rant or clumping pattern. 4. Minor adjustments to plant material placement locations may be directed in the field by ons 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) Eupatoriadelpus fistulosum Joe—Pye Weed Seed Mix — 25% Pynantheum virginianum Virginia Mountain —Mint Seed Mix — 25% Symphyot6chum eoneolor Eastern —Silvery Aster Seed Mix — 25% Symphyotrichum pilosum White Heath Aster Seed Mix — 25% SHRUBS Cornus amomum Silky Dogwood Quart 7 28 Ilex verticillata Winterberry Quart 7' 28 Photinia melanocarpa Red Chokeberry Quart 7' 28 LOWLAND r` PLANTING SCHEDULE RIPARIAN PLANTING ON 3:1 SLOPE Botanical Name Common Name Size Spoceing(FT) Quantity UNDERSTORY HERBACEOUS Osmundo cinnamomea Cinnamon Fern Quart 3-5' 50 Polystichum acrostichoides Christmas Fern Quart 3-5' 50 Dennstaedtia punctilobula Hay —Scented Fern Quart 3-5' 50 Dryopteris marginalis Marginal Shield —Fern Quart 3-5' 50 UNDERSTORY SHRUBS/TREES Comus amomum Silky Dogwood Quart 3-5' 50 Undera benzoin Spicebush Quart 3-5' 50 CANOPY TREES Tilia americans Basswodd Whip 40' 6 Quercus palustris Pin Oak Whip 40' 6 Quercus bicolor SwamOpa White Whip 40' 6 K'3 RIPARIAN PLANTING SCHEDULE C11 No'r- O SCALE - — LIVE STAKING PLANTING ON 3:1 SLOPE Botanical Name Common Name Size(FT) Spaceing(FT) Quantity Populus deltoides Eastern Connonwood Native Cuttings 3' 85 Salix discolor Pussy Willow Native Cuttings 3' 85 Sambucus nigra Common Native 3 85 ssp. canadensis elderberry Cuttings Salix Nigro River Birch Native ute a 3' 85 Salix sericea Silky Willow Native Cuttings 3' 85 Physocarpus Ninebark Native 3' 85 opulifolius Cuttings Comus amomum Silky Dogwood Native Cuttings S 85 Live stake species may vary depending on availability 5 LIVE STAKING PLANTING SCEDULE C11 Ncrr TO SCALE - — FORESTED EDGE ENHANCEMENT Botanical Name Common Name Size Spaceing(Fr) Quantity HERBACEOUS (SEED) Aster cordifolius Heart —Leave Aster Seed Mix — 25% Schizachyrium Little Bluestein Seed Mix — 25% scoparium Geranium Spotted Seed Mix — 25% maculatum Geranium Anemone lancifolla Mountain Thimbleweed Seed Mix — 25% UNDERSTORY SHRUBS/TREES Cercis canadensis Redbud Quart 7-10' 75 Cornus Florida Flowering Dogwood Quart 7-10' 75 Viburnum Black How Quart 7-10' 75 prunifolium Viburnum CANOPY TREES Acer rubrum Red Maple Whip 40' 18 Quercus alba White Oak Whip 40' 18 Quercus rubra Red Oak Whip 40' 18 7 FOREST EDGE PLANTING SCHEDULE �1N(Off M SCALE I TERRACE WIDTH VARIABLE I PLANTING SPACED PER TABLE FILL MATERIAL COIR MAT(40)/GEO TEXTILE r 2' WOODEN STAKE COIR LOG W/ NATIVE GRASS PLANTING 2.5' 17D YR STORM WATER HT. 5' # I k 3 i 1.0 CREEK BED ,,�� '! t, I� 1. 5' ) CLASS Al RIP —RAP 2 LOWLAND PLANTING DETAIL C11 Scale:1`41 FILL MATERIAL PLANTING SPACED PER TABLE CUR MAT(40)/GEO TEXTILE 2' WOODEN STAKE COIR LOG W/ NATIVE GRASS PLANTING 2.5' 1 10 YR FLOW DEPTH 1.0' CREEK B@ �- 1. 5' -� CLASS Al RIP -RAP RIPARIAN PLANTING DETAIL C11 Scale:1.4 FILL MATERIAL COIR MAT(40)/GEO TEXTILE- 4' LIVE STAKE PROTRUDING 1'—, I 2.5' 1 10 YR FLOW DEPTH ^ — •- 1.0' 7^ CREEK BED Y r _T CLASS Al RIP —RAP 3' pit A ice; 6 LIVE STAKING PLANTING DETAIL C11 scale: 1•=s' PLUG SPACING PER TABLE SPECIFICARON— 27 WOOD CHIP LAYER MIN.— COIR MAT(4O)/GEO TEXTILE FILL MATERIAL LIGHTLY COMPACTED BEFORE PLANTING set,' ,".x..i 2.5' 1 10 YR FLOW DEPTH _ . , CREEK B@° l 5' —� CLASS Al RIP —RAP i 8 FOREST EDGE PLANTING DETAIL C11 scale: i'=s' CRF- AREAS 2.5 ABOVE CHANNEL PLANTED WITH FOREST EDGE PLANTING TYPE AREAS >35 ABOVE CHANNEL PLANTED WITH FOREST EDGE PLANTING TYPE WIDTH VARIABLE I -RIPARIAN PI SPACING TBD ( 2' WOOD CHIP LAY TOPSOIL LOG DIAMETER EMBED MIN. t LOG NOTES: 1. TO BE USED AS PART OF WOODY DEBRIS PLACEMENT. 2. EXCAVATE AREA TO PLACE LOG IN TO I 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. rlO_ LOG PLANTING SECTION C11 Scale:l"=s' " 1L1 ® 0 00 U z N W -� LoJ ro Z d Z v W Z a z F-7k; DZ z > D N ' 2 N d > > >si z w 0 w _J Q r0i U 0 JUIS141 M. SHIMP Date 11/14/2017 Scale 1 "=10' Sheet No. 011 OF 15 File No. 17.014 .1, ! i SWM FOREST%P N ! I SPACE EsmT 1 t � ! VARIABLE WID H SWM FACILIT ESMT I a �• � '' f''1 LI I l i I ",STONE FLOW SPREADER ' L=212' W=3'' ' °' ` 1 `STONE FLOW C14 / 'III / gPRFAnFR UL e 1 20' PUBLIC DRAINAGE & SWM ACCESS ESMT PERMANENT STGRMWATER MANAGEMENT NOTES 1. SEE SHEET C14 FOR BMP PROFILES AND DETAILS. SEE SHEET C15 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 C15 FOR OUTLET PROTECTION SIZING, 7+ i a tiLg r (l � tS t �4 �s g 1 � 1 01. s; ! i/ D DITCH— TOWN4A DETAIL VARAWi E C2SCa78:' 0 f 0 ,,--SEE DETAIL THIS PACE AERATE AREA WITHIN 10' OF EX. FENCE AFTER CONSTRUCTION 0 0 I} 60 • ■ ■ ■ ■ ■ ''y... 00 0 ;1 O 0 r U z N W ^z It z �W z oI Ir a z N 2 N N W ALj F J Z V) C w Q F 0 W 4 O � N U OP O � U J SHIMP is 45183 w cn v� cn 2EEEEcn N8DL E E E E 0 0 0 0 0 c,aUC7u 0 L Z Q C3 0 0 0 c�C-)UQ ® C) Q C) 1' m 04 Cj Q CD O®© CONSTRUCTION OF A SILT FENCE (WITH WIRE S UPP OR T) 1. SET POSTS AND EXCAVATE A 4"X4' 2. STAPLE WIRE FENCING TO THE POSTS. TRENCH UPSLOPE ALONG THE LINE OF POSTS. 3. ATTACH THE FILTER FABRIC TO THE WIRE FENCE AND EXTEND IT INTO THE TRENCH. FLOW 4. BACKFILL AND COMPACT THE EXCAVATED SOIL. �I EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. SILT FENCE (SF) W. WIRE SUPPORT Not To Scale Sediment Trap Design Data No. A B C H ( } Z (ft.) ft } Weir Length (ft.) DA ( Acs.} We Vol.D1 (Req.} (ft. } Wet Vol. Cy (Prov.} Bottom SA (sq. ft.) Dry Vol. (Req.) D2 (ft.) Dry Vol. Cy (Prov.) Top SA (sq. ft.) 1 635.5 638.0 640.0 3.0 4.0 17.5 2.91 195.0 2.5 196.9 1876 195.0 2.0 209.5 3280 2 615.0 618.0 620.0 3.0 4.0 16.9 2.82 188.9 3.0 206.3 1575 188.9 2.0 190.4 3D03 Z ORIGINAL 1.1-00 GROUND ELEV. L=C Top Surface Area 1.0' H DRY STORAGE pz �- 67 CU. YD-%ACRE `V ' EL=B IF WET STORAGE 67 CU. YO./ACRE ti D1 FILTER CLOTH ORIGINAL (EXCAVATED) GROUND EL=A Bottom Surface Area ELEV. s* *SEE PLATE 3.13-1 COARSE AGGREGATE CLASS I RIPRAP CROSS SECTION OF OUTLET CLASS I RIPRAP LENGTH (IN FEET) _ 6 X DRAINAGE AREA. (IN AC.) RSI'� % DIVD DIKE Y I!/ COARSE AGGREGATE EXCAVATED FILTER CLOTH AREA **COARSE AGGREGATE SHALL HE VDOT #3, #357 OR #5 OUTLET (PERSPECTIVE VIEW) �TEMPORARY SEDIMENT TRAP (ST'i GRAVEL CURB INLET SEDIMENT FILTER GRAVEL FILTER* 12" ! OFF WATER WIRE MESH FILTERED WATER r - . SEDIMENT CONCRETE GUTTER 12" CURB INLET SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS WHERE PONDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO CAUSE INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND UNPROTECTED AREAS. * GRAVEL SHALL BE VDOT #3, #357 OR 5 COARSE AGGREGATE. 3 INLET PROCTION IP) j 3 Not To Scale SAFETY FENCE PERSPECTIVE VIEW NNEW/ Vq�l V il20.1 iiiQ11 • • Q�'�iQQQQiQ1 a� �Q+i tliii�i- ., IirQrQiQiQiQ�„r_ PERSPECTIVE VIEW PLASTIC FENCE SOURCE: CON, PLASTICS VD& ROAD AND BRIDGE STANDARDS VAI!,l DSWC L i r.'Sj �"�. µy^.}:fi.J •gar�,`Yi `�y y���:�ay.4.4 + :`i.4u �... �•4•+�, '.ice ,•,,... � to' MAX. CONCRETE FOOTING - WIRE FABRIC LINE POST GROUND UNE PERSPECTIVE VIEW METAL FENCE r4 SAFTY FENCE SAF C13 Not To Scale - - PLATE. 3.1-1 1992 ''35 TABLE 3.35-A CIT{GAMC MULCH MA'T"E ALS 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 curse (Minimum 2 matter. Must be anchored. tons for Spread with mulch blower winter cover) or by hand. Filler -Mulch Minimum 35 lbs, Do not use as mulch for 1500 lbs. winter cover or during hot, dry periods.* Apply as slurry. Corp Stalks 4 - 6 tons 185 - 275 lbs. Cut or shredded in 4-6I' lengths. Air-dried. Do not use in line turf areas. Apply with mulch blower or by Band. World Chips 4 - 6 tons 185 - 275 lbs. Free Gf 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 hared. Beek Chips 50 - 70 cu. 1-2 cu. yds. Free of coarse matter. Air - or yds. dried. Do not use in fine Shredded turf areas. Apply with Bark mulch blower, clasp 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 2000 lbs./ac. or 45 lbs./'1000 sq. ft. Source; Va. DSWC 5 MULCHING MU C13 Not To Scale TABLE 3.39-A ADHESIVES USED FOR DUST CONTROL Water Application Dilution Type of Rate Adhesive (Adhesive: Water) Nozzle Gallons/Acre Anionic 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 s DUST CONTROL DC C13 J Not To scale TABLE 3.31-C TEMPORARY SEEDING PLANT MATERIALS, SEEDING RATES, AND DATES w NORTFIa SQUTHb SEEDING RATE PLANT 3!I 5!I 8l15 2lI5 5!1 9/I CHARACTERISTICS SPECIES Acre 1000 ft, to to to to to to 4f30 8I15 llfl 4/30 9t1 11115 OATS 3 bu. (up to 10t3 Ibs„ 2 tbs. X - - X - - Use spring varieties (e.g., Noble). Avena saliva not less than 50 lbs.} RXEd 2 bu. (up to 110 lbs., 2.5 lbs. X - X X - X Use for late fall seedings, winter (Secale cereale not less than Sa lbs.} cover. Tolerates cold and low moisture, GERMAN MILLET 50 lbs. approx. I lb. - X - - X - Warm -season annual. Dies at first Setaria italics frost. May be :aided to summer minas. ANNUAL RYEGRASS` 60 lbs. 1'fa tbs. X - X X - X May be added in mixes. Wilt L.nliu mniti-florum) mow out of most stands. WEEPING 15 lbs. 51h ors. - X - - X - Warm -season perennial. May LOVEGRASS bunch. Tolerates hot, dry slopes rostis curvula and acid, infertile lolls. May be added to mixes. KOREAN 25 lbs. approx. 11fz X X - X X - Warn season annual legume. LESPEDEZA° lbs. Tolerates acid sails. May be (L.esrxdera St3 ulace8 added to mixes. a Northern Piedmont and Mountain region. See Plates 3,22-1 and 3,22-2. b Southern Piedmont and Coastal Plain. May be used as a cover crop with spring seeding, d May be used as a cover crap with fall seeding, X May be planted between these dates. - May not be planted between these dates. TEMPORARY SEEDING TS 13 Not To Scale - - TEMPORARY DIVERSION DIKE -Compacted Soil 18" min. ................. .. ... -Flow 4.5' min. DIVERSION DIKE (DD) C 13 `Not To Scale PAVED CONSTRUCTION ENTRANCE CONSTRUCTION _PH n 7 r' AC ' i + q ar i FAQ saM s I's` PROI=IL 2 i 27. PAVEYDN'i --Pt i 1 N/l: DRAINAGE u US EXT MD FL L_ 3 1,)-rH � x� TO SEDIMENT OF INGRESS AND EGRESS� TI�A ,� PR t'~: CIP_ TtATiC4i PLAN SEDI�i_ 1` SECTION A -A A ininii> uni water tali of 1 le-11 liliLA be ' stalled ,,Nitli �i livilliinillit 1 i>><cli l�al(]a l slititoff vahre ujlpl�ing a Wash liose s,%ritli tl chameter of I.5 inclie � for adequ to coiistant pfessufe, Wash water must sae t*anied away fioni the en6mice to all approved settlfiag area to retilove. sedinletxt A11 sedinient shall l e preveiitecl f t�ili ente6ijg stomi dl°ain,_c, ditches Of Waterc iu+"es, PAVED WASH RACK TC SCALE PAVED CONSTRUCTION ENTRANCE (CE) C1 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 gross 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 Ibsfacre. 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 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&eSU, 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 Ibs, per acre of 10-20-10 (10 lbs. per 1,000 square feet) or equivalent. 1 o PERMANENT SEEDING PS C1 3 Not To Scale 0 0 M 0 o tt ro z O N w W h Z z W I--, I W IL 0 = Z N 0 r-7>_ > W 1- J > � zw 0 W � 0 4 N 0 T� �P 0 U JU`S�. SHIMP 1�o. 45183 C1 aEEEEtn l E E E E o o a o v O 0 0 O Uc,ac)U E 000000cu co w '- Q rD CD �r LQ 00 M [c- `d N1 CC C)+� C)- '��i 0 N tr a Z 0 U.. 0.. _j Date 11/14/2017 Scale N/A Sheet No. C13 OF 15 File No. 17.014 I I I I � • � .�+ j / e ! 1 C o 1 It C1 f Ii t W E�0& / o f/ 2 GDNN C110N g I (t F• b' R t u 24" DOE GRATE M� } , I D 1L�ER A _ F - 0 ST E STORAGE � 'S f LEVEL 1 DESIGN f j, _ ,R PLANTINGS = L=91' SPF=5 Al --'- fSPr/L=0.6 �$ 11211B�R & ,�'"�, , :� `zx3' SPREADER rf: � •--7'�` , v ' - PREEAE L SPR 1 - -= 0 32 op BMP DETAIL: BIOFILTER A - SCALE: 1" = 20' 0.7 V 625 620 615 Vau 625 i 620 I iTTOM L 615 J 610 10+00 10+50 810 BMP B PRETREATMENT CELL HORIZ: 1" = 30' VERT. 1'=10' r r--- a I I 1 1 CLASS Al I I - - ` TOP-4F BANK=--620.5---- 6 WEIR ELEV=619 5 ; RIP -RA --LAYER. -1 ; 82QF X 1;0' 4 I �DEPTFI ---- i 619.E TOP OF � �z 9=;617.0B. 0 GRAY -i - --- -- - # STONE- -- FILTER FABRIC -- I STORAGE ` LAYER: j 3" PERFORATED ON 80TT0 & 820 SF 1.0 r DRAIN- PVC I- _IN I SIDES OF STONE DEPTH- = 6"18.0 1 6 6 645 i I 640 635 630 625 620 615 610 6 r • 48" I,RECAST CONC. I RISEN W. TRASH RACE 24" HLPE PIPE I RIM=28.70 NEW GRADE.I yy b�MFD �RATF _ -- - - - ----- -- - - - - - --�t --------- f COVER MEDIA WITH 3- TOP=628.2Q ` I 3 BOTTOM I HARDWOOD MULCH GRATE*624.5 IX. GRADE -- - - - - OBSERVATION -------------FILTER-ME01X4 - -- ---- 2000 SF X I I WELL & C/0 I 2.0' DEPTH 4' CR T j -- � s3a�3a --- - 10 -YR 628.82 t 628.0 BED; SURFACE I pAE -- ''� '. ,� � ✓- 'a�'.` � n, ,v .r, �'" s {J..r,-•-Y-w,�... , a .k .. - 3 �' t i t , 4F�RAlCEL_-- j I � 622.5 BOTTOM r 3" WASHED ;PEA OF GRAVEL --- 3" 4" PVC -;----------- j REDUCER INTO 40 PtRF. PVC B/W STONE,& 15' HDPE OUT a 624.00 i 3" RIFICE SOIL MEDIA i FILTER, 3 ON SIDES FABRIC I OF # 57 STONE BIOFILTER --- ; ONLY j kORAGE LAYER: ` 4 : 3 4000 SF x S I i 's I 1 F L E DEPTI-� I I -I I j 10+QQ 10+50 11+00 11+50 22 13MP PROFILE: BIOFILTER A HORIZ: 1" = 30' VERT: 1 645 640 635 630 625 620 615 610 605 t I IX„ GRADE ' l " PVC I j 6" PVC; ---„-- ----- 48 PRECAST ( I RISER W. TR��,H 4' CREST RIM=618.40 i 0 620.0 -------- ICONC. RACK --OBSERVATION --' --- - - -- t WELL & C/O NEW 0ADE. i CDVEP�-M€OT�i WhTH 3 - - I._- - � MULCH I OBSER\TION-- - -- FILTER -MEDIA: a WELL � C/0 30001SF X I .�_ 3.0' DEPTH � ---_ - 10 YR WSE=618.� - - --..._HARDWOOD _ E 6180 BED SURFACE 'a :fin, , 'w „y,,'!°y .,m'w, d+a.',"�°° V'�-� ;y �� �, �R4.P d�a9'aR a• :S, e�.,`e.,•.a` y,'N u mm "... "iy`°F',.y''n q� yy "tea R'. 3.Se"9 F, `xig �'¢ ,*a w.. ,+° I � taE � l it SR��v'- ^r84 �2 '°¢'L°P f"`•�«� ti"t•"a4.'t"S }'v. il' `Y H„`9"_'S. LS.d'. "L '�4 ;"+'�°�'°;'� .� GRAVL w TT S R P a at mg a ,:•.gar �I ar ,� 615 0 TOP OF 6120 BOTTOM OF GRAVEL S t- i j 15 HOPE OUT 3" X "PVC 4" SCHEDULE (2) 241' HDPE PIPE #57 NONE FILTER FABRIC 611.2( REDU ER INTO 40 PERF. PVC W. DOMED GRATE STORAGE LAYER: ION SIDES OF ' r 3" ORIFICE @ s 0 612.50 1 TOP=618.20 40001SF X �BIOFILTER ONLY '614.5 GRATE I { 3" WASHED PEAGRAVEL FILTER i I ;B/W STONE &SOIL MEDIA - -- _ --- - i A A qy Ca i 'I r r` j 24' DOME GRATE TO� 3 �4 STONE v ' f STORAGE 4000 BIOALTER 8/bETAILS v ST ,. 26 LEVEL ,2OTNGS = r DESIGN TO ar a n PL j g s•°`' "H; _ L==,.208' SPF=205' ( i j SPF L=1,0 j ? % t 4" D E, \ ATE - ?o S NE'` 1 ?p ST AGE 10+50 11+00 11+5a 12+00 BMP PROFILE. BIOFILTER B C14 HORIZ: 1" = 30' VERT' V=10' --- - BIOFILTRATION LANDSCAPE LIST Plant Symbol Planting Type Botanical Name Common Name Quantity Large Tree Quercus palustris Pin Oak 3 �} Large Tree Betula nigra River Birch 5 Large Tree Taxadium distichum Bald Cypress 4 Medium Tree Salix nigra Black Willow 6 Small Tree Alnus serrulata Smooth Alder 3 Shrub Clenthra alnifolia Summerset 11 Clethhra ' Shrub Viburnum dentatum A iburnuodm Viburnum 10 TOTAL: 42 BIOFILTER PLANTING DETAILS NOT TO SCALE 6" CLASS 1A RIP RAP 27� 7' I I I� I I ( '� �� .x\,�--t {rl' . N �`r`W ✓ t` r '` `�y ,{l �:,,'� 11� US 160 NW FILTER SEDIMENT TRAP CELL: #3 STONE FABRIC LINER 0 18" DEPTH ,,PRETREATMENT CROSS SECTION Not To Scale • o , 000 SF TONE STORAGE P ° 3" LAYER OF #57 STONE 6" . �"••�� dy47 III g.I "W ' "7 � t ; ° i x �, 3' WIDE STRIP OF FILTER FABRIC P' 6"X6" TREATED TIMBER LEVEL SPREADER UP. ANCHOR TIMBERS TO FOOTER WITH STEEL BOLTS, 8.0' FLAT LENGTH- -I ELEV=8.5 KEY IN LINER 6" INLET DITCH A �•-#5 SMS a a" C-C TYP. STRUCTURE SIZE AND WALL THICKNESS PARES -� SECTION A -A SECTION B-8 NDTEs T SAFETY SLAB (SL-D 6 TO BE USED ONLY WHEN 7. HE STMDARO AF SPECIFIED N THE PLANS ON THE DRNNAOE SUMMARY SHEET NID/OR THE DRANHdE DESCRIPTION. FOR IAMIHOLES JUNCTION BOXES, !!D DROP fG.ETS WITH HEIGHTS GREATER THAN 12 FEET, 7HE SPAtJtfG OF ADJACENT SAFETY SLABS SHALL BE S"TO 12'WITH NO SAFETY SLAB LOCATED WITHIN 6 FEET OF THE TOP OR BOTTOM OF THE STRUCTURE. SAFETY SLABS SHALT. NOT BE LOCATED BELOW ANY INLET PIPE OF 30" DIAMETER OR GREATER. 2. THE COST OF THE SL-1 IS INCLIDED IN THE COST OF THE STRUCTURE SEE CAST N FOR FURTHER PLACE DRAWINGS DETAILS 3. ACCESS OPENINGS ARE TO BE STAGGERED FIRM ONE SIDE OF STRUCTURE TO THE OTHER WHERE APPLICABLE. STEPS ARE TO BE STAGGERED ACCORDINGLY. BARS II a" C-C TYP, 4. SAFETY SLAB MAY BE CAST -IN -PLACE OR PRECAST. CAST -IN -PLACE CONCRETE TO BE -,,,TOO , . .. , CLASS A3 (3000 PSI). PRECAST CONCRETE IS TO BE A4 (4000 PSI). REINFORCING ' � STEEL TO BE IN ACCORDANCE WITH AASHTO M31. 5. ACCESS OPENINGS MAY BE 30'" DMETER OR 301' SOUAAE. WHEN STRUCTURE WIDTH IS LESS THIN 30" THE ACCESS CPENNG SHALL BE RECTANGULAR (STRUCTURE WIDTH BY 3D" LONCL TYPICAL PRECAST UNIT 630 t"°Q' TYPICAL CONCRETE SAFETY SLAB FOR DROP INLETS,'EaFnD" REFERENCE ROAD AND aRIDGE STANDARDS MANHOLES AND JUNCTION BOXES fi25 SHEET 1 OF 1 REVISION DATE 302 1DS.14 VIRGNIA DEPARTMENT OF TRANSPORTATION 620 N�'IL ' ' `11�C ' DROP INLET 615 2 X 4' WOOD FRAME DROP INLET 610 WITH GRATE T FRAME 605 1:5' MAX. UUU E2 I CONCRETE FOOTER Q `� 'I� 8 GRAVEL -_FLOW SPREADER - DITCH ---CONNECTION C1 4 Not To Scale 84 ` f •~' •#. •`-�,,.�..,�..�s,... ...�.. �M �°~' �_ � - \ ill ri_'� `� '� _ � - � �:-fit-1 \ •� •1s d� '' `- BMP DETAIL: BIOFILTER B C14 SCALE: 1" = 20' - " •. 11 MIN. III�� ELEVATION OF STAKE AND FABRIC ORIENTATION DETAIL A K9_�DROP INLET PROTECTION DIP C14 Nat To Scale 10% SETTLEMENT TYPICAL VEE-SHAPED DIVERSION 1 o CLEAN WATER DIVERSION CD C14 Not To Scale `Tf1 nm 111 Cc TYPICAL GRAVEL STRUCTURE 11 RIGHT_ OF WAY DIVERSION(RWD C1 4 Nat To Scale END -SECTION 12" - 60" PIPE - ALTERNATE ENO -SECTION 12" - 6Q" PIPE L> HUB- LW 4N OUTLET ENi'U,aECTlat"35 HLi6 Etti(d--ON 3UTLEY.Cryp-SECYi0N5 3P,5OT Erin .i3h1- KZT END-3EG'4uC - ... - �5PaCOT i�iQ ON BILE N:,Fhs3-SEC31Cte f Ix x 4D GRETE To pall, UNARM 1.Ll _ � � I 44 AEI MINIMLIME -- . E..4-- - -- ---....� _.. E- PLAN PLAN L B 401AME DIANE'M I OF a-. B or ��PE s 'LO F m" 3 C,�c. STEEL FAfIkIC RFIIt+`iTt3CEMi N", A END VIES T 1 NNE C1`_Vf m Y-Y END VIEW SEtTf�3�f X-X. END SECTION LIMEN510N -?%PPE DIAWTER h B v D G 1 .. ,{�,. 2 0,... R. . " O 4 „O:: 11., ar" z n., _1M a.. �1. 24r, ,• 3 7'°. 2-al- 6 R' " at a°6"' 27" " 4 .17 1 O" 4 tP ` 1 S , ., ©. ss ° , a n ' 2 , 1s^ 35, END SECTION DIMENSIONS -F'E tN Tc,iz'. A 9 4 1,. 1 • x W 27, 2'. 81-11 d2e, 1 _g»s- 5 -3"' - 2 11 ` &'2,, 6• fly - 48•, 2. 0,. g .2•. - 8 •..r T _p•,. 2 3.: 5. -5°' 2'-I1'• 6. 4,. -5. 3'-S'" g _ .. ...»e....-. LLnuctfe€-. t'Wt'e PINY LINE: �^ Xe? a NOTES'= PA'E-LENQTHa WN ON PLANS ME 13ASED ON FRO -SECTION: MICA SHOWN ON. 133E LEFT, If THE. CUNTRA.LTOR CLECTS ' - TO OF THE ALTEWATE ➢ESISN SHOWN ON THE RIS1{T. 4EtN,eYNS w14t, HE. U�At-"CE1). 7Y:' THE13NFFEFt_%NGE'-4N CIMro_%w "D", SLOPE DETAIL SPECIFICATION REFE. Nr;E - FLARED END -SECTION FOR 1211.6011 CONCRETE PIPE CULVERTS N0 VIRCIly'1•A_DEPARTMENT .OF. TRAN.",.PORTATON ttPV-2rn1- ��:p1 SHAPE TO ELEVATION j yam, OF LTD -POINT OF LARGEST PIPE. SHAPE TO ,r CONTOUR I I i, OF PIPE I I OF OOUTLCRAINET PIPE TO INVERT •�A' SECTION A -A Tw>NNsln°N eETwo-aN METHOD OF TREATMENT IN DROP INLETS PIPE DIAMETERS WHEN DIFFERENT SIZES OF PIPES ARE ENCOUNTERED. NOTES SHAPING OF MI MOLE AND INLET INVERTS IN ACCORDANCE WITH THIS DRAWING IS TO APPLY TO THOSE STRUCTURES SPECIFIED SLOPE TO DRAIN ON PLANS OR 4YFdiE INYER7 OF PIPE IS A3S)YE INVERT OF. _ TO INVERT- OF STRUCTURE.' OUTLET PIPE I MANHOLE OR DROP INLET IS TO BE FORMED AV CONSTRUCTED IN ACCORDANCE WITH APPLICABLE STANDARDORSPECIAL DRAWING. THE INVERT SHAPING AS DETAILED HEREON IS TO CONSIST OF A PORTLAND CEMENT CONCRETE MIX CONFORMING TO CLASS A3 OR CLASS C1, EXCEPT THAT 25% OF COARSE AGGREOATE MAY BE UP TO 4" IN DIAMETER AND CONSIST OF STONE, BROKEN BRICK, - BROKEN CONCRETE OR BROKEN CONCRETE BLACK. THE SURFACE t. SHALL BE LEFT SMOOTH BY MEANS OF HAND TROWELLING. NOW OF THE COARSE AGGREGATE. SHALL REMAIN EXPOSED. �. DETAILS OF INVERT SHAPING AS SHOWN HEREON ARE FOR EXAMPLE -- ` n ' PURPOSES ONLY. EACH MANHOLEORDROP IINET'IS TO BE SHAPED - - Y INDIVIDUALLY TO BEST FIT THE PARTICULARINLET AND OUTLET CONFIGURATION AND FLOW LINES. SECTION B-B PLAN METHOD OF TREATMENT IN MANHOLES �vC• SPECIFICATION ROAD A@ BRIDGE STANAARDS STANDARD METHOD OF SHAPING �FERENDE SHEET t OF 1 REVISION DATE MANHOLE & INLET INVERTS 3G2 106.08 VIRGINIA DEPARTMENT OF TRANSPORTATION -__-- DRIP LINE SNOW FENCE BOARD FENCE CORD FENCE CORRECT METHODS OF TREE FENCING CORRECT TRUNK ARMORING TRIANGULAR BOARD FENCE 12 TREE PROTECTION FENCING Not To Scale �0 0 0 U 6 W -, 0 �t Z .W I zLL L Z t (Lul z N 0 Cq W > V) H W t� V J i y > Z W T � 0 d 0 1 �Y �t JU M. SHIMP C. No. 45183 O co Oi Tn In C C C C LN 0 6 C) 0 0 0 ® a '�c7c�c�c7 Q U) t_ q- 0 3 0 O 0 O 0 C] UCJCJC3 CO CO CO co co d- Ln -0 Ili C14 N o(Z)C�T z U Uj LL W LU Date 1 1 14 2017 Scale N A Sheet No. C14 OF 1 5 File No. 17.014 675 F I-4 630 -7 J-9 45 62511 11 ....... .. . ...... ... 620 CO 615 - - -------- - ....... ... 610 - ------- 10+00 10+50 1 1 +00 . ............ ... ..... ...... - - -_ - .... ...... ........ ...... .... 11+50 12+00 12+50 13+00 �1 STORM SEWER PROFILE: Al -A6 cc,34 R2 645 645 EX GRADE , a II r --NEW-'3WE 640 635 635 630 b3o ep CD n. to iCD rq 625 L 623 ......... 620 rma co y 620 ifs 10+50 11+00 11+50 (�3STORM SEWER PROFILE 1- j ?j2-MB � Cl 5 li RIZ- 1- = 30' VERT: 1'=10' 11 ...... . . . . 2,=:; . .... ..... :L 625 c&T _MfW -1 C'4 C"! A ON to -------- ----- ... ....... . 620 CD 00-- . ... ..... . ...... . ..... 60 11 50 10+00 10+50 11+00 11+50 12+00 STORM SEWER PROFILE: DI-D3 C15 HORIZ: 1" = 30' VERT: 1'=10' E3 i0ju 625 620 615 610 605 v1jv 625 620 615 605 Uvu 10+00 10+50 11+00 11+50 rnn 8 �BIOFILTER B OUTLET PROFILE: El-E3 (-.l 5 hHORIZ. 1" = W VERT: 1'=10' IJDPITS .. . ......... . .. ......... . ....... i L) .... ....... -­- ----- .......... .. =1 _j 640 635 645 630 640 635 625 630 620 .. ... ..... 625 615 620 610 605 12+5 /110RIZ: I" = 30' VERT: 1'=10' 650 645 640 635 630 625 620 615 �A6 YA5 _0) 675 ---- ------ + ........ . . ...... -P 670 665 -1 RAK �-NL - -WG . .. . .... .. ------ - 660 ....... ... . 655 650 -HGL 645 640 .. ..... ... ------ ........ .. - --------- 635 r 630 625 ... ....... ... . ........ ... ........ - - --------- ---- 620 ...... ..... ....... . ..... .......... . 615 ... ........ ... 0 13+50 14+00 14+50 15+00 15+581 -13 -NEW--GMDE ICo V) 0-1 . . . . . . . . . f' - - - - - - - GRAIDE . . .... ........... . HL;L , zq E- CD C:) C4 tit 10+00 10 + 50 11+00 11+50 12+00 12+50 ('__�4STORM SEWER PROFILE: Bl-B6 HORIL: 1 = 30 VERT: 1'=10 r7'BIOFILTER A OUTLET PROFILE: CI-M � ri .5 _=z 30' -VERT: 1'=10' Ditch Sections Channel 10-Yr Channel Channel Entrench Ditch Lining Depth Flow Width Side Depth Slope IWidth Matting 6" EC-2 1.0 0.47 8 4:1 Matting Matting I - 2 EC-2 1.0 0.63 6 3:1 Depth Matting I Pei 3 EC-2 Matting 1.0 0.56 8 4:1 - EC 4 B EC-2 Matting 1�0 0.87 8 4:1 5 EC-2 1.0 0.79 8 4:1 TYPICAL DITCH SECTION Matting 6 EC-2 Matting 1.0 0.61 6 3:1 TOPICAL DITCH DETAILS � C 1 5 � Not To -Scale ___ Top Width = 5' DITCH 4A SECTION I _tUU 640 635 630 625 620 615 do 610 605 Entrench [Matting 6" Depth=1' 650 645 640 635 630 625 620 615 610 ,+5 NOTE: BMP'S MUST BE INSTALLED ONLY AFTER ALL UP -GRADIENT GRADING HAS BEEN COMPLETED AND AFTER PRELIMINARY STABILIZATION ACHIEVED NOTE- CONCRETE INLET SHAPING (IS-1) REQUIRED ON ALL STRUCTURES WITH A 4' OR GREATER DROP AND SAFETY SLABS (SL-1) ON ALL STRUCTURES TALLER THAN 12'. A4 AA 660 655 650 645 640 635 27 Uvv 655 650 645 640 635 0 45-0 10+00 10+5T 2STORM SEWER PROFILE: A4-A4A � C 1 5 ��Iz . �r=W'VERT: -V= I O' - 650 645 640 635 630 325 ... . ...... CD ...... . ..... ---------- - 1. ....... ... ---- --- P . .... ..... W j M. SHIMP IN 451?3 -7 jig 133A B3B B3C �5 Cs ram. ,_ RAD&-\rxs SEPA,Rjknffi-- 91 C.0 uu L0 Ln to rn" 650 645 E E E E 640 0 0 0 0 o U3 < 0 0 635 630 625 Co 00 m 00 00 CD r-) r-- -4- -4- - CD C:) C5 - UD 00 M C4 0-1 10+00 10+50 11+00 11+50 C:i C) CD 5 STORM SEWER PROFILE: B3-B3C 1-n PIPE OUTLET CONDITIONS A 11-1 A PLAN VIEW PIPE OUTLET TO FLAT WITH NO DEFINEDAREA CHANNEL L a ox -T_ SECTION A -A FILTER CLOTH IM IN RECOMMENDED FOR ENTIRE PERIMETER NOTES: 1. APRON LINING MAY BE RIPRAP, GROUTED RIPRAP, GABION BASKET, OR CONCRETE. 2. LeL IS THE LENGTH OF THE RIPRAP APRON AS CALCULATED USING PLATES 3.18-3 AND 3,18-4. 3. d = 1.5 TIMES THE MAXEk1UM STONE DIAMETER, BUT NOT LESS THAN 6 INCHES. Pipe Outfall Q" (Cfs) La (ft) D o (ft) 3Do (ft) d5o (in) depth (in) Outlet Condition Al 7.30 9.0 1.25 3.75 6.0 9.0 Flat B1 10.31 14.0 1.25 3.75 6.0 9.0 Channel C11 4.80 6.0 1.25 3.75 6.0 9.0 Channel D1 11.96 12.0 1.50 4.50 6.0 9.0 Channel El 8.55 9.0 1.25 3.75 60 90 Channel OUTLET PROTECTION TABLE (OP Not To Scale z ), m U 3d . (MIN.) > UUILLrIT TO WELL z )EFINED CHANNEL O 0 W Date LL z W 11/14/2,017:1 Scale IN Sheet No. C15 OF 15 File No. 17.014