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HomeMy WebLinkAboutWPO201200027 Plan - Revision Minor Amendment 2012-03-201.. STONE 70' MIN. CONSTRUCTION ACCESS 3" SM -2A ASPHALT TOP COURSE EXISTING 2% 2% PAVEMENT _ f `6" MIN. 21 A AGGREGATE BASE PROFILE STONE 70' MIN, CONSTRUCTION ASPHALT PAVED ACCESS [-® WASHRACK EXISTING 2� I 2% PAVEMENT y2% 12' MIN.* 0 * I_ POSITIVE DRAINAGE TO MUST EXTEND FULL WIDTH OF � SEDIMENT TRAPPING INGRESS AND EGRESS OPERATION DEVICE PLAN 12' MIN. - POSITIVE DRAINAGE TO 2% SEDIMENT TRAPPING DEVICE FILTER CLOTH A minimum water tap of 1 inch must be installed with a minimum 1 inch ballcock shutoff valve supplying a wash hose with diameter or 1.5 inches for adequate constant pressure. Wash water must be carried away from the entrance to an approved settling area to remove sediment. All sediment shall be prevented from entering storm drains, ditches or watercourses. PAVED WASH RACK NO SCALE SOIL DESCRIPTION 22C3 CULPEPPER CLAY LOAM 7% TO 15% SLOPES. SOILS OF THIS SERIES ARE VERY DEEP, WELL DRAINED, MODERATELY PERMEABLE, WITH MEDIUM TO HIGH POTENTIAL FOR SURFACE RUNOFF. 76 - RIVERVIEW LOAM -0% TO 5% SLOPES. SOILS OF THIS SERIES ARE VERY DEEP, WELL DRAINED, MODERATELY PERMEABLE AND FORMED IN LOAMY ALLUVIUM ON FLOOD PLAINS. RUNOFF IS LOW, CAUSING THIS SOIL TO FLOOD FOR SHORT PERIODS MOSTLY IN WINTER OR EARLY SPRING MONTHS. 95 - WEHADKEE SILT LOAM -0% TO 2% SLOPES. SOILS OF THIS SERIES ARE VERY DEEP, POORLY DRAINED, MODERATELY PERMEABLE AND FORMED IN LOAMY SEDIMENTS. RUNOFF AND INTERNAL DRAINAGE IS VERY SLOW, AND MOST AREAS ARE FREQUENTLY FLOODED. TABLE; 3,31-C TFIMPORARY SEEDING PLANT AV TERIALti, SEE13ING RATES, ND DATES • SEEDING RATE NORTH" ` o(I`THb I 128 LBS. PLANT 2 LBS. T all Sts &tis 2;15 Sit!t FEBRUARY 16 THROUGH APRIL sPECIEs C CAR ACTERiS'TICS I Acte , 1000 ft' to to to to to to VESCH STD. 3.32. 2. SEEDINGS TO BE MULCHED IMMEDIATELY UPON COMPLETION OF SEED APPLICATION, IN ACCORDANCE W/ VESCH STD 3.35. ar-30 :+ft5 I1l1 4:30 91I 11115 _ - ,. _ r I ©ATS 3 bu. (up to Ifo lbs., 1 2 Ras, X , :- X Tat spring varicti�i (e.e.. Nvbtci. i iAvV_ aatiW,l not less than 50 Its) . _._..- � - - - RY G bY. (up t4 i Iii l'o&.. ? 1tk. C x { ` ljs; [°r Ida; fall 'C"lilt$a. %litAtf I tSe, cc rerrzie not lem than S0 ibs.l ewier- Tulera' s cold and k-* ,-..ala I I Imistore. GERMAY vtILLET So lUs. app.os. 1 1S, - X - X - Warm -season mmu,4. Dias at fitst j&teria itaGca eru'l. May tx adtkal to sutumcf nixes. ANNUAL RYEGRASS` 60 lbs. I''A Its, X - X x - x May be aLldcd in tuiaes. Will i l,r>Is . multi&2rum3 __.. mow our of twos; sands, WOEPING 15 Ihs. SIA om - x - - X - N1'arm- &tson perennial. Siay WMMASS b-Awh T°I rat, hot, dry slopes iEragrostis aad act,, illfett.le soils. Play b. I addad to miacs. ; - - ._. KOREAN 25 lbs. apprex, I i14 X X X % warm,'Asan Antal lrvuma. LESYEf)EZA` the Te[:ntc� need scits, Slay ba I lt, o` '_ 1 I # suued to ttrzea. _ a Northern Piedmont and Alountain region. See Plates 3,22-I and 3.22-2. ° Southcm Piedmont and Coastal PIain. '' Nlay be Used as a cover crop with spIing seeding. d May be used as a ewer crop with Pail wedirig. X \Taj be planted between these dates. t , n oetweea these da eS - hi a ' n be la .cd P 2'x4" WOODEN FRAME nPnP /Nl FT --- - __ __ /� PERSPECTIVE VIEWS 4ME THER CESS .. CORNERS tit VA IIUN Ut' J /AKt ANU FABRIC OR/ENTA TION SIL T FENCE IP DROP INLET PROTECTION 3.07-1 NO SCALE Q D W PIPE DESIGN Table 16: Sediment Trap desi n (spec 3.13) - _ _. _ -_ _ - - _ - --. _ _ _ _. __ __ _--- --- - _ __ _ _ _ _. __ 9._..._ _. _.__...__.. . n = 0.013 for RCP n = 0.01 for HDPE _- _ E&S GENERAL NOTES . . -- ripe ;Hydrology : Pipe AL CO STRU TION NOTES FO EROS(N AND SEDIM NT CONTRO PLANS 1. TheEplan approving authority mustRbe not fied one week prior to theLpre-construction conference, one week prior to the commencement of land 1 : F I Sedlm@nt Trap 1 D@Sign disturbing activity, and one week prior to the final inspection. a: � „ o _ j N e AI! erosian and sediment control measures will be constructed and maintained according to minimum standards and specifications of the Virginia o ! fi �� Q ) r VARIaHLE' Erosion and Sediment Control Handbook and Vir inia Re ulations VR 625-02-00 Erosion and Sediment Control Y W 1 �. d m m a drainage area (acres (3 1.22 9 9 o _ -- - 1 - � Regulations. C. ; � _. to Io ; 2 E T4 , � m., c -i o m . m . E 30', -„ 2 trap volumes:... -.. o : R 2 �` O - f=REST rlr STOPIE WEIR r m m w ! :.: ; v . E 1 c : 3o a v 3 oz -.. .... _ ..._. -- - - _ . _._ .. �__,���`� _- Y L E w 0 o , - - : ---, oRtctrut va_-R�A�®�" 3 All erosian and sediment control measures are to be placed prior to or as the first step in clearing. 'I a a t 0 I � E rri 0 } . w.1 > � E elevation .5 area (sf) volume(cf). wlume(cy) ND 4. A co of thea roved erosion an se C ` 0 o o T - , o .,. ,_.$., and :.LLw ,o. _a. py pp d dement control plan shall be maintained on the site of all times. Piperun:4-out _ 0' 0.0,` - - 1O - 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 374 5. 4156 a z 1.54 0.45 ossa ossa 10.0o 6.37 3.72 372 378.00 377.78 44.0 0.013 0.0050 2a `U1soa 4.os 0.18 375.5 4860 4,503; 166.8 N vARwe<e' areas), the contractor shall submit a supplementary erosion control plan to the owner for review and approval by the plan ,., _.-_ - . _. .. __ .. .-- -._ .. __ - ORY STORAGE H 2 our 1.16 0.65 0.754 1.447 10.18 5.33 4.02 X7.72, _m 377.68 377.47 42.0 0.013 0.0050 2a 1600 Y-: 5.00 0.14 f 376.5 5588 9,723' 360 1- ' approving authority. _>_ .__ . . -_ .. - .. _- e ant a or is es onsib or installatwn of additional erosion control mea are DRAINAGE DESCRIPTIONS �\ \, / P e Y s s necessary to prevent erosion and sedimentation as determined \ he plan rapproving authority. f WET STitRAGE 6 an PIPE INFORMATION INLET INFORMATION - \ - - - * "'^x 7y All disturbed areas are to drain to a roved sediment control measures at all times durin land disturbin activities and durin site develo ment until STR. \, ..` f (ExcAvara> PP 9 9 9 P DIA. LENGTH` SLOPE' INVERT INVERT MATERIAL INLET Curb INLET SLOT RIM` COMMENTS \ , ! ��, ,. _ ,, ,--" _. .-.. _-.-_" - .-._ . _ _. -_. rt TER ctorn °aou o� . NO. t 1 t I (°7°l IN OUT TYPE T STATION LENGTH ELEVATION _ _ _-_ __ - _ _ rE ° Bn Duri g ildewateringaoperat ons, water will be pumped into an approved filtering device. in. ft YP� - VDOT STD. IS -1 REQ'D & x - wet storage: , \ 9. The contractor shall inspect all erosion control measures periodically and after each runoff producing rainfall event. Any necessary repairs or cleanup I 4 DI -1 N/A 0.00 0 381.00 \ *SEE PLATE 3.13-i CONi`F. AG4RE A?c C4p55 2 R�RAP Modified Height .,\\ \ " ' wet storage required (cy) (67"DA} 81.7 maintain the effectiveness of the erosion control devices shall be made immediately. 3 24 44.00 o.so°r° 37a.00 377.7s RCP3 4. �.•_ .- - >, bottom of stone weir (ft) 374.99 10. All fill material to be taken from an approved, designated borrow area. VDOTSTD. IS -1 REQ'D8, �.``� -`;- ` : _ All waste materials shall be taken to an approved waste area. Earth fill shall be inert materials onl ,free of roots, stumps, wood, rubbish, and other 2 DI -1 N/A 0.00 0 381.00 wet Stora a rovided at this elevation c . 81.7 Modified Height `. , \� `\ _. ._...- -9 P _ - _ �- Y) _ - debris. \ - slo a of wet stora a sides 2:1 Y 1 24 42.00 0.50% 377.68 377.47 RCP3 _ \,. R-` , , - p - - -9 --_ --- -- __ . _ _ __ __- _ _.._ 12. Borrow or waste areas are to be reclaimed within 7 days of completion per Zoning Ordinance section 5.1.28. , \`_ `� "- weir length (ft) (6x DA) 7.3,1 13. All inert materials shall be transported in compliance with section 13-301 of the Code of Albemarle. _-----.-- - ...._..._._. __...._. .....-..- ..-.... ....._.-._._-_._.- :_... ...._..-. sTxucTTltzE DRnlrl�rE .,�' "`» -- d stora e: bottom oftra elevation ft 374.5 14. Borrow, fill or waste activit involvin industrial -t a ower a ui ment shall be limited to the hours of 7:OOam to 9:00 m. \. tNLsr TYPE AREA P6RINtErfiR A c I O D* Flow TYPE 1•\\ d Stora a re uired c 67 DA 81.7, bottom tra dimensions: 37'x150' rrow, fill or waste activity shall be conducted in a safe manner than maintains lateral support, or order to minimize any hazard to persons, physic (FT) (FT) (ACRES) ([N/HR) (CFS) (IN) - 'I' \ v _ - - damage to adjacent land and improvements, and damage to any public street because o slides, sinking, or collapse. `�_,- .`\ A. N,, crest of stone weir 375.5 top of dam elevation (ft) 346.5: Y \ ; ,. -- -- - -: - - - - - -- -- - - - - - - -- ---- 16. The develo er shall reserve the ri ht to install, maintain, remove or convert to ermanent stormwater mann ement facilities where a licable all ^� �\� qv ' � I dry storage provided at this elevation (cy) 85.1: top width of dam (ft) g' P g P 9 PP _ _ _... _ - _ _., _ - ._._. - __ _ ___ _- __-_ _ _- ___.- _. erosion control measures re uired b this Ian re ardless of t e s 32 DI -1 1.17 5.00 1.54 0.45 5.40 3.74 5.4 ORIFICE FLOW ( `- \ \ - - - -- 4 Y P 9 h ale of any lot, unit, building or other portwn of the property. - ` \ slope of dry storage sides 2: I top trap dimensions 45x158 i 17. Tem orar stabilization shall be tem orar seedin and mulchin . Seedin is to be at 75 lbs acre, and in the months of Se tember to Februar to 32 DI -1 1.17 5.00 1.16 0.65 5.80 4.37 7.8 ORIFICE FLOW r-� \ \ ,� P Y P Y 9 9 9 / P Y ' \ \. j i,, consist a 50 50 mix of Annual R rass and Cereal Winter R or in March and A ril to consist of Annual or a \\ <,..\ J I / / Ye9 Ye• P Rye, M Y *D: De th assumes 50% cb d ` \ - I I P g t // -:- - t / _ NOTE. STOCKPILE IS LOCATED ON TOP OF A RIDGE. 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 ( - - `-< `\: I , - �- f control ins ector. EXISTING PAVED ENTRANCE TO FU%ICTIOIV_ �_ _ `ti Ce r < --- - : r f 18. Permanent stabilization shall be lime and fertilizer, permanent seeding, and mulch. Agricultural grade limestone shall be applied at 90lbs/1000sf, E - r s. I 6 Inco orat d into the to 4-6 i s es -- AS A CONSTRU TION ENTRANCE i �"' �� rp e p n h of soil. Fertilizer shall be applied at 10001bs/acre and consist of a 10 20 10 nutrient / I % � � `� - \ \ - l . mix. Permanent seedin shall be a lied at 180lbs acre and consist of 95% Kentuck 31 or Tall Fescue and 0-5% Perennial R rass or Kentuck �_., ��, , �, co - _ \ - Lash w . „ : _ _., . Blue rass. Straw mulch is to be a lied at 80lbs 100sf. Alternatives are sub ct to a roved b the Count erosion control \ ° Z / _ �. ` _. I \ ins ector. �` P - - , • \ r __ ,� _ I \ a? %� S,� 19. Maintenance: All measures are to be ins ected week) and after each rainfall An damn a or clo in to structural measures is to be re air \- \. \ i / � - P. IDR 1ST - ,\, % P Y Y 9 99 9 P -- �� _ / t °i \ , �,. l- \_ _ ) ., > _ - .x immediate) . Silt tra s are to be cleaned when 50% of the wet stora a volume is filled with sediment. All seeded areas are to be j / FLAT -AREA.\ . Y P 9 / _ \ eseeded wh n c ssory to achieve a good stand of grass. Silt fence and diversion d es which are collectin sediment to half their hei ht must be ,T / ��� �,,,,, , _ \ C - `\ \ cleaned and repaired immediately. J / / / \ T \ .. 20. All temporary erosion and sediment control measures are to be removed within 30 days of final site stabilization, when measures are no longer MORRIS C. EEK YACHTCLUB,IN / I, I //�/ "%rte,'„\ 4; /' ./ //' "`` `, needed sub' ct to a royal b the Count erosion control ins ector. / - I PP / 1e Y Y P -- \ COT �, , i 21. This lan shall be void if the owner does not obtain a it / HE OLYMPIA COMPANY /. / \ _„ / - , , � p p perm within 1 year of the date of approval. (Water Protection Ordinance section 17-204G.) ! %/ ' / 1, - \ 1 22. Permanent ve etotion shall be installed on all denuded areas within nine 9 n h 07600-od-o0-OS5Co ,_ �% / :