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HomeMy WebLinkAboutWPO201000011 Plan - Stormwater 2010-10-05VICINITY MAP SCALE: 1" = 2,000' original Proffer. December 17 3007 PROFFER FORM Date: December 112007 ZMA 4 20ti4 -022) Tic Map and Parcel Numhcr(s). 61 -181 61-183• and 61 -IMA 6,(A6 Acres to be rezoned from R=4 to PRD tPlanned P -esidm ial DevelopmeiztZ in conjunction with the -Application Plan," sheet CA.0 of the freesdale Park LMA Application Plan package prepared by the Cox Company, I= revised on November 20, 2007 and with Proi%r Attachment l Oft Sheet A -1 A on page 7 of these proffers). Pursuant to Section 33.3 of the Albemarle Count." Zoning Ordipattce, the Owner hereby voluntarily proffers the conditions listed below which shall be applied to the properly, if rezoned with the offered. plans approved for development. These conditions are proffered as a part of the requested rezoning and the Owner aclorowledges That the conditions are reasonable. 1. maximum Residential Dens&_ The number of residential dwelling units that may be developed 'in Trresdale Park shall not exceed 90 units. ry Road rlDVements. Applicantt (also referred to herein as the - Owner ") shall cau:e completion of the following road improvements: A. Rio Rosa Imps bd rnal Connections. The Owner shalt dedicate public right-of -way and construct an public road improvements and internal private connections to the Signal at Pen Park Lane shown on Attachment 'fir eesdale Proffers (ZM44 2004 -02'3) December 1?, 200 i Page 1 The Owner sluxll dedicate land fronting Rio Road from the northern l roperty line to the Treesdale Part: cutr;ance -for the "T'struction of a deceleration'turn lane inu+ the project- 'lire Owncr shall also dedicate, land fronting Rite Road from ih } a "1'tecsalale i'ark entrance to the southern Itrupc;tiy line tiff the construction c f deccierationitum lane which is shown on Attachment 1 (Sheet A -! -0). F3. Yrttnased Sittual at the Swnewater Fntru a and Ruo d'Pen Purl, l Ante I_nterscx tion. Within at) day, after x'DOT determines that a traffic signal is waarrartled at the intmection of the Stonewater $niranco: and Rao Road11'en Park Lane, the Owner shall matte a cash contribution to the County equivalent to its one-third share Of the total costs assuciat0xl with the design, installation of all required signals at Rio Road and Pen Paris Lane and all ass( iated intersection improvements. C, The Owner shall not request that a certificate of Occupancy be issued for any building in Treesdale Park prior to the completion of the improvements and the dedication of land and public improvements delineated in Proffer 2(A) and shown on :Attachment 1 (Sheet A -1.0). ltrfo>dab a )%pstrtst. The Owner shall pro�;ide afr'ordahie housing (as described herein) ("Affordable L:nits') equal ur one hundred percent f lW'0 O Of the total residential units constructed on the Property, in the furor of for-rcn: upartments. Each subdivision plat and site plan for the Property, other than those executed: for purposes other than the creation of housing unrrs, shall designate the units that will. subject w the terms and cor:dirions of this proffer, incorporate affordable Units as desmibed herein. Afforclab' 'tv. Rental Rates. For the mrpcises of this Proffer 3. "A ffad uite sWi mean rental unit, which have gross rents (rent plus tenant paid utilities) that do not exceed I300% of Fair Market Rents pubiished by the U.S. Department of Housing and Urban Development (IlVD); provided that,, in each subsequent calendar year, the monthly act twat for each for -renr affordable unit may be iricreased up to three percent (3 %'1- For purposes of this Proffer 3. the terra ''net rent" means that the rent dt>zs not include tenant -paid utility costs. The req ii t merit that the Toss for sits l fDr -rent affordable units may not exceed the maximurn rents established in this Proffer shall 3 apply for a p--riotl of fifteen i 5 j vears followring the date the certificate Of Occupancy is issued lb) Albemarle County for each for -rent atfordable 7reesdale Proffers fLMA# 21131 -0 j December '_2,2a07 Page unit, or until the units are sold as 10%, or moderate cost routs qualifying as such under the County's Affordable Housing Palley, Conveyance of lntqMg' All imsttltnients conveying any interest in the far -rent affordable units during the Affordable Term shall contain language reciting that such unit is suhject w the terms of this Proffer ?. In addition, all contracts pertaining to a coavcYaance of any for -rent affordable unit, or any part thereof, during the Affordable 'ie m shall contain a complete disclosure of the restrictions and controls established by this Proffer 3. At least thirty (30:) days prior to the conveyance of any interest (other than for the securing of a mortgage or steed of trusty in any for-rent affordable unit during, the Affordable Term, the then- current owner qwn notify the Albemarle County Chief of Housing in writing of the conveyance and provide the name, address and telephone number of the potF:rttal gcantec, and state that tits requirement of this Proffer have been satisfied. R�Iaottirte Rental Rates• During tare Affordable Term, within thirty (30) days air the cornmeneement of the lease: term for each for -rent fordable unit, the (hurter shall provide to the Albemarle County Huusing Office a copy of the lease agreement for each such unit rented that shows the rental rate for stub unit and the term of the lease. In addition, during the Affordable Term1, the ()W= shall provide to Albemarle Count., :, if requested, any r OM, copies of Jesse agreements, or other data pertaining to rental rates as Albemarle Coturty may reasonably require. licadavr C rc _Yat t`e'a Trail Ea4em�nt Dedication. The 0,xner 4, shall dedicate to public use land within a 30 -foot wide access easem ent to Albemarle Coturty for a - greerrwap trai1". This glee way trail shall serve as a pedestrian path through the Property cotmecting "ter the Racoon of the proposed Meadow. Creek Parkway Greenw-ay trail, and its alignment ='d layout shall be in general accord with the schematic design depicted on the Application Plan. The idtirnatc design and location of the trail shall be established by ffic Director of Plaiming in consultation with the Director of Parks and Recreation and shall procdde access to the Meadow Creek Park*`4y trail ea$ta cut is not dedicated by the first final subdivision Green%ay. if the Cneenway plat, the Owner shall be responsible for the cost of a survey and preparing the deed and plat to convey the Greenway trail casement to the County before the first final site plan approval fter it is dedicated to public use the Gteenway Trail and all land within the access easement shall um irrue to be included in the total a= of Open space and amenities within the Property°. if the owner of the adjacent 1iroperty. Tax Map 61 Parcel 84, dedicates to pub is we a (IxLnwray trail easement that would serve as a substitute for tine Greenv,•ay trail casement described in tb s Pmf.`sr to the satisfaetion,of the Director of Planning is consultation Rage 3 ireesdrleProffers { iA#'004-022) ge'Cemba' 12'2007 with the Director of Parks and Recreation prior TO approval of the first final Subdivision plat or site plan on the Property, then this proffer shall he deemed satisfied. 5. Ttawit Rmat tion AreFL The Owner shrill reserve an area for a bus pull -off from Itio Road within the northeast portion of the site, within the summon open space $Tea located directiy to the east of Building I in general accord with the Application Plan. Should fixed -route bus service associated with the C;harlottesvilte 'Transit Se.•vice (CTs) ever be extended, to serve the section of Rio P.oad adjacent to the site, upon detttund of the County. the Owner, at its own expertse., shall cunstmct the, bus stop to accommodate a bus pulling off Rio Road and picking up riders in a dedicated lane located within the Property. In conjunction with the bus ,pull-off ` area, the Owner sbalI also construct a smaL' transit shelter to complete the bus -stop. The specific desibm standards of the bus . the shelter shall be determined h Pu'1 -off and e y VWT. CTS, and the birt:ctor of community Development w=ithin sixty days of the County's formal request for the transit slap. in the absence of any fixed -route service, Treesdalc Park shall be designed to accommodate the CTS On- demand Lunt, or JAL!dT service within the ctsmrnunits as a means of providing public access to residents per the cxisting progratrs.. 6. Off-Site lmprovemots. The O-Amer shall provide stormwater management within the area depicted on the AppUe ion Plart which Array alq be used as a shared stormuater management and Rest Manugero.nt Practices (`HMP) facility to serve both Treesdale Pail: and the de'veloprneW •3T ­. NlAp 61 -84,. No final site plan shall be approved until all casexents necessalw .c,,r the off -site- improvements shown on the Application Plan have been recorded. Theme off -site improvements includc grading, swrmwater managenicut, construction of an aeeessway to the stormwater manaagemew facility and transportation improvements to the lntersection of Rio Road and Pen Park Lane. ". Earth raft Standards for Multifami1 OevelgpMent. The Owner shrill cause all multifamily buildings within the Project to be. designed and constructed so as to be rated a minimum of - Certified" untie: the EarthCraft Green Building Rating System t'or multifamily devclopment, as set: forth in the EwthCtafi House Technical Guidelines, -version November. 2006. Prior to the sstiatuce of a building permit. the C►wnsr shall submit a certificatiort from the EarthCraf`t certified pmiect architect to the Director of C:ormnuni.y Dev:aop - tent `}rat the building plan meets the EarthCrafi standards. Before the Boner requests a certificate of Occupancy for any building for which a licenwd ' 'S Treesdale Prorfe... (ZM1`c:R 2504 -022j tlecenber 12,200 pn,s.4 architect rendered such a certificate. the Owner shall submit to the County's Director of c.,orttmunity Development document ution that the building; is EarthCraft certified. 8. ErOgionand SeddmIx Control Mcasurc%. In order to provide a higher- level of Erosion and Sediment Contral than is required by current State and Local regulations, the Owner shall adopt construction procedures and practices that provide additional soil stabilization measures to achieve perimanctit stabilization immediately upon reaching (anal grades, but no more than six months from the start of constriction. These procedures and practices shall include: A. Utilize. wire reinforced silt fence rather than standard silt fence. B. Immediately upon, rewchirg final grade, utilize permanent seed and matting to stabilize all slopes steeper than 3H :1 V C, stablize with temporarw seeding all disuirbed arrcas that are not at final grade but will remain dominant longer than 14 days. U. Place fencing prior tot the start of constriction around areas to be conserved. F. Other measures deemed better or equivalent by the County Engineer. submitted as of the 1%�- day t g 2007, by E?ANDiR Of PAGE LEFT N TFlr'fiOtiALLY Bt4 ,hT,; SICiN,ATURE PAGES TO FOLLOW.] ALRF4lARLE Iit3I SInG IRTPRO VE ,EE�'I' PR(7)(,RAM, INC. a Virginia nonstock, 501(rY3 non- prtfit corporation By: Its F*ec tine hector fly: `` — Its` Date: L''?- c3 �_._1__ a TREESDALE PARK FINAL SITE PLAN RIO DISTRICT ALBEMARLE COUNTY, VIRGINIA I LOT S TMP 61A -3-5 ROBERT E. DANIEL j D. B. j296, P9 344 / \ \ ` ✓.--- �o ?41¢11 ` ;,FOP t 18-OAK�� \ 4 20 -F gE\1 I4` , i TAX MAP 61, PARCEL 18: ALBEMARLE HOUSING IMPROVEMEN' D.B. 3775, Pg 664 & 678 D.B. 693, P9798 PLAT ZONED PRD o.915 ACRE TAX MAP 61 ALBEMARLE HOUSING IMP D.B. 3775, F D.B.665,F DAB s9a, f ZONE 2.883 LOT 4 TMP 61A -3-4 ANNE P. PARSONS LIVING TRUST D.B. 3435. P91 LOT TMP 63A -3-3 DAVID R. & CHARLENEGENEST D.B. 34,44, P9 480 1 LOT LOT 2 TMP 61A -3 -3 TMP 61A -3 -2 NORMAND & THERESE AUGER DONNIE R. McDANIEL D.B. 3133, P9 79 D.8.2896, P9 So LEGEND ROADS EXISTING CULVERT EXISTING CONDITIONS CUL VERT SITE PLAN '�, UTILI-iY PLAN CURB Z 6G" J� TOWNE q- # EC -3A DITCH DEP77-1 OF EC -3A DITCH - -� EC -2 DITCH THIS STONEWATER PEN Ptl�' 3 PROJECT SUBDIVISION LANE RIO ROAD IMPROVEMENT PLAN BENCH MARK DRAINAGE AREAS CLEARING LIMITS DRAINAGE PROFILES VDOT STANDARD STOP SIGN 200 - EXIS77NG CONTOUR 200 - M F `eoGRtiF 240.55 PROPOSED SPOT ELEVA77ON �`w O LANDSCAPING PLAN di ,v✓AI'l..tA.lb AO ,y 0 LL -2 LIGHTING PLAN LL -3 LIGHTING DETAILS LL -4 ALBEMARLL' 15 TOTAL SHEETS COUNTY_na MUL77- FAMILY RESIDEN7AL UNI7S (4 BUILDINGS) TOPO & SURVEY CHARLOTTESVILLE U BUILDING #1 (16 UNITS) = 11,200 SF DATUM: BUILDINGS #2 (24 UNITS)= 10,230 SF BENCHMARK. BUILDINGS #3 (20 UNITS)= 10,230 SF BUILDINGS #4 (28 UNITS)= 10,230 SF COMMUNITY CENTER = 2,540 SF EXiS77NG VEGET4770N. TOTAL SF OF ALL BUILDINGS= 44,430 SF ROUTE 250 VICINITY MAP SCALE: 1" = 2,000' original Proffer. December 17 3007 PROFFER FORM Date: December 112007 ZMA 4 20ti4 -022) Tic Map and Parcel Numhcr(s). 61 -181 61-183• and 61 -IMA 6,(A6 Acres to be rezoned from R=4 to PRD tPlanned P -esidm ial DevelopmeiztZ in conjunction with the -Application Plan," sheet CA.0 of the freesdale Park LMA Application Plan package prepared by the Cox Company, I= revised on November 20, 2007 and with Proi%r Attachment l Oft Sheet A -1 A on page 7 of these proffers). Pursuant to Section 33.3 of the Albemarle Count." Zoning Ordipattce, the Owner hereby voluntarily proffers the conditions listed below which shall be applied to the properly, if rezoned with the offered. plans approved for development. These conditions are proffered as a part of the requested rezoning and the Owner aclorowledges That the conditions are reasonable. 1. maximum Residential Dens&_ The number of residential dwelling units that may be developed 'in Trresdale Park shall not exceed 90 units. ry Road rlDVements. Applicantt (also referred to herein as the - Owner ") shall cau:e completion of the following road improvements: A. Rio Rosa Imps bd rnal Connections. The Owner shalt dedicate public right-of -way and construct an public road improvements and internal private connections to the Signal at Pen Park Lane shown on Attachment 'fir eesdale Proffers (ZM44 2004 -02'3) December 1?, 200 i Page 1 The Owner sluxll dedicate land fronting Rio Road from the northern l roperty line to the Treesdale Part: cutr;ance -for the "T'struction of a deceleration'turn lane inu+ the project- 'lire Owncr shall also dedicate, land fronting Rite Road from ih } a "1'tecsalale i'ark entrance to the southern Itrupc;tiy line tiff the construction c f deccierationitum lane which is shown on Attachment 1 (Sheet A -! -0). F3. Yrttnased Sittual at the Swnewater Fntru a and Ruo d'Pen Purl, l Ante I_nterscx tion. Within at) day, after x'DOT determines that a traffic signal is waarrartled at the intmection of the Stonewater $niranco: and Rao Road11'en Park Lane, the Owner shall matte a cash contribution to the County equivalent to its one-third share Of the total costs assuciat0xl with the design, installation of all required signals at Rio Road and Pen Paris Lane and all ass( iated intersection improvements. C, The Owner shall not request that a certificate of Occupancy be issued for any building in Treesdale Park prior to the completion of the improvements and the dedication of land and public improvements delineated in Proffer 2(A) and shown on :Attachment 1 (Sheet A -1.0). ltrfo>dab a )%pstrtst. The Owner shall pro�;ide afr'ordahie housing (as described herein) ("Affordable L:nits') equal ur one hundred percent f lW'0 O Of the total residential units constructed on the Property, in the furor of for-rcn: upartments. Each subdivision plat and site plan for the Property, other than those executed: for purposes other than the creation of housing unrrs, shall designate the units that will. subject w the terms and cor:dirions of this proffer, incorporate affordable Units as desmibed herein. Afforclab' 'tv. Rental Rates. For the mrpcises of this Proffer 3. "A ffad uite sWi mean rental unit, which have gross rents (rent plus tenant paid utilities) that do not exceed I300% of Fair Market Rents pubiished by the U.S. Department of Housing and Urban Development (IlVD); provided that,, in each subsequent calendar year, the monthly act twat for each for -renr affordable unit may be iricreased up to three percent (3 %'1- For purposes of this Proffer 3. the terra ''net rent" means that the rent dt>zs not include tenant -paid utility costs. The req ii t merit that the Toss for sits l fDr -rent affordable units may not exceed the maximurn rents established in this Proffer shall 3 apply for a p--riotl of fifteen i 5 j vears followring the date the certificate Of Occupancy is issued lb) Albemarle County for each for -rent atfordable 7reesdale Proffers fLMA# 21131 -0 j December '_2,2a07 Page unit, or until the units are sold as 10%, or moderate cost routs qualifying as such under the County's Affordable Housing Palley, Conveyance of lntqMg' All imsttltnients conveying any interest in the far -rent affordable units during the Affordable Term shall contain language reciting that such unit is suhject w the terms of this Proffer ?. In addition, all contracts pertaining to a coavcYaance of any for -rent affordable unit, or any part thereof, during the Affordable 'ie m shall contain a complete disclosure of the restrictions and controls established by this Proffer 3. At least thirty (30:) days prior to the conveyance of any interest (other than for the securing of a mortgage or steed of trusty in any for-rent affordable unit during, the Affordable Term, the then- current owner qwn notify the Albemarle County Chief of Housing in writing of the conveyance and provide the name, address and telephone number of the potF:rttal gcantec, and state that tits requirement of this Proffer have been satisfied. R�Iaottirte Rental Rates• During tare Affordable Term, within thirty (30) days air the cornmeneement of the lease: term for each for -rent fordable unit, the (hurter shall provide to the Albemarle County Huusing Office a copy of the lease agreement for each such unit rented that shows the rental rate for stub unit and the term of the lease. In addition, during the Affordable Term1, the ()W= shall provide to Albemarle Count., :, if requested, any r OM, copies of Jesse agreements, or other data pertaining to rental rates as Albemarle Coturty may reasonably require. licadavr C rc _Yat t`e'a Trail Ea4em�nt Dedication. The 0,xner 4, shall dedicate to public use land within a 30 -foot wide access easem ent to Albemarle Coturty for a - greerrwap trai1". This glee way trail shall serve as a pedestrian path through the Property cotmecting "ter the Racoon of the proposed Meadow. Creek Parkway Greenw-ay trail, and its alignment ='d layout shall be in general accord with the schematic design depicted on the Application Plan. The idtirnatc design and location of the trail shall be established by ffic Director of Plaiming in consultation with the Director of Parks and Recreation and shall procdde access to the Meadow Creek Park*`4y trail ea$ta cut is not dedicated by the first final subdivision Green%ay. if the Cneenway plat, the Owner shall be responsible for the cost of a survey and preparing the deed and plat to convey the Greenway trail casement to the County before the first final site plan approval fter it is dedicated to public use the Gteenway Trail and all land within the access easement shall um irrue to be included in the total a= of Open space and amenities within the Property°. if the owner of the adjacent 1iroperty. Tax Map 61 Parcel 84, dedicates to pub is we a (IxLnwray trail easement that would serve as a substitute for tine Greenv,•ay trail casement described in tb s Pmf.`sr to the satisfaetion,of the Director of Planning is consultation Rage 3 ireesdrleProffers { iA#'004-022) ge'Cemba' 12'2007 with the Director of Parks and Recreation prior TO approval of the first final Subdivision plat or site plan on the Property, then this proffer shall he deemed satisfied. 5. Ttawit Rmat tion AreFL The Owner shrill reserve an area for a bus pull -off from Itio Road within the northeast portion of the site, within the summon open space $Tea located directiy to the east of Building I in general accord with the Application Plan. Should fixed -route bus service associated with the C;harlottesvilte 'Transit Se.•vice (CTs) ever be extended, to serve the section of Rio P.oad adjacent to the site, upon detttund of the County. the Owner, at its own expertse., shall cunstmct the, bus stop to accommodate a bus pulling off Rio Road and picking up riders in a dedicated lane located within the Property. In conjunction with the bus ,pull-off ` area, the Owner sbalI also construct a smaL' transit shelter to complete the bus -stop. The specific desibm standards of the bus . the shelter shall be determined h Pu'1 -off and e y VWT. CTS, and the birt:ctor of community Development w=ithin sixty days of the County's formal request for the transit slap. in the absence of any fixed -route service, Treesdalc Park shall be designed to accommodate the CTS On- demand Lunt, or JAL!dT service within the ctsmrnunits as a means of providing public access to residents per the cxisting progratrs.. 6. Off-Site lmprovemots. The O-Amer shall provide stormwater management within the area depicted on the AppUe ion Plart which Array alq be used as a shared stormuater management and Rest Manugero.nt Practices (`HMP) facility to serve both Treesdale Pail: and the de'veloprneW •3T ­. NlAp 61 -84,. No final site plan shall be approved until all casexents necessalw .c,,r the off -site- improvements shown on the Application Plan have been recorded. Theme off -site improvements includc grading, swrmwater managenicut, construction of an aeeessway to the stormwater manaagemew facility and transportation improvements to the lntersection of Rio Road and Pen Park Lane. ". Earth raft Standards for Multifami1 OevelgpMent. The Owner shrill cause all multifamily buildings within the Project to be. designed and constructed so as to be rated a minimum of - Certified" untie: the EarthCraft Green Building Rating System t'or multifamily devclopment, as set: forth in the EwthCtafi House Technical Guidelines, -version November. 2006. Prior to the sstiatuce of a building permit. the C►wnsr shall submit a certificatiort from the EarthCraf`t certified pmiect architect to the Director of C:ormnuni.y Dev:aop - tent `}rat the building plan meets the EarthCrafi standards. Before the Boner requests a certificate of Occupancy for any building for which a licenwd ' 'S Treesdale Prorfe... (ZM1`c:R 2504 -022j tlecenber 12,200 pn,s.4 architect rendered such a certificate. the Owner shall submit to the County's Director of c.,orttmunity Development document ution that the building; is EarthCraft certified. 8. ErOgionand SeddmIx Control Mcasurc%. In order to provide a higher- level of Erosion and Sediment Contral than is required by current State and Local regulations, the Owner shall adopt construction procedures and practices that provide additional soil stabilization measures to achieve perimanctit stabilization immediately upon reaching (anal grades, but no more than six months from the start of constriction. These procedures and practices shall include: A. Utilize. wire reinforced silt fence rather than standard silt fence. B. Immediately upon, rewchirg final grade, utilize permanent seed and matting to stabilize all slopes steeper than 3H :1 V C, stablize with temporarw seeding all disuirbed arrcas that are not at final grade but will remain dominant longer than 14 days. U. Place fencing prior tot the start of constriction around areas to be conserved. F. Other measures deemed better or equivalent by the County Engineer. submitted as of the 1%�- day t g 2007, by E?ANDiR Of PAGE LEFT N TFlr'fiOtiALLY Bt4 ,hT,; SICiN,ATURE PAGES TO FOLLOW.] ALRF4lARLE Iit3I SInG IRTPRO VE ,EE�'I' PR(7)(,RAM, INC. a Virginia nonstock, 501(rY3 non- prtfit corporation By: Its F*ec tine hector fly: `` — Its` Date: L''?- c3 �_._1__ a TREESDALE PARK FINAL SITE PLAN RIO DISTRICT ALBEMARLE COUNTY, VIRGINIA I LOT S TMP 61A -3-5 ROBERT E. DANIEL j D. B. j296, P9 344 / \ \ ` ✓.--- �o ?41¢11 ` ;,FOP t 18-OAK�� \ 4 20 -F gE\1 I4` , i TAX MAP 61, PARCEL 18: ALBEMARLE HOUSING IMPROVEMEN' D.B. 3775, Pg 664 & 678 D.B. 693, P9798 PLAT ZONED PRD o.915 ACRE TAX MAP 61 ALBEMARLE HOUSING IMP D.B. 3775, F D.B.665,F DAB s9a, f ZONE 2.883 LOT 4 TMP 61A -3-4 ANNE P. PARSONS LIVING TRUST D.B. 3435. P91 LOT TMP 63A -3-3 DAVID R. & CHARLENEGENEST D.B. 34,44, P9 480 1 LOT LOT 2 TMP 61A -3 -3 TMP 61A -3 -2 NORMAND & THERESE AUGER DONNIE R. McDANIEL D.B. 3133, P9 79 D.8.2896, P9 So LEGEND ROADS COMMUNITY CENTER r, I 0 24 SHEET LAYOUT SCALE: 1" = 50' SHEET INDEX 1 iS 1 I , k 1 1 I� it TITLE SHEET 3 TITLE SHEET EXISTING CULVERT EXISTING CONDITIONS CUL VERT SITE PLAN DROP INLET & STRUCTURE NO. UTILI-iY PLAN CURB GRADING & DRAINAGE CURB & GUTTER SITE PLAN NOTES & DETAILS PROPOSED PAVEMENT -' EC -3A DITCH 6" DEP77-1 OF EC -3A DITCH - -� EC -2 DITCH 6° DEP7H OF EC -2 DITCH ,,._.., EARTH DITCH ROAD PROFILES DRI VEWAY CUL VERT RIO ROAD IMPROVEMENT PLAN BENCH MARK DRAINAGE AREAS CLEARING LIMITS DRAINAGE PROFILES VDOT STANDARD STOP SIGN 200 - EXIS77NG CONTOUR 200 - PROPOSED CONTOUR 240.55 PROPOSED SPOT ELEVA77ON STORMWATER MANAGEMENT CALCULATIONS T/B DENOTES TOP OF BOX COMMUNITY CENTER r, I 0 24 SHEET LAYOUT SCALE: 1" = 50' SHEET INDEX 1 iS 1 I , k 1 1 I� it TITLE SHEET 3 TITLE SHEET T -1 EXISTING CONDITIONS E -1 SITE PLAN S -1 UTILI-iY PLAN S -2 GRADING & DRAINAGE S -3 SITE PLAN NOTES & DETAILS S -4 SITE PLAN DETAILS S -5 SITE PLAN DETAILS S -6 RETAINING WALL DETAILS S -7 RETAINING WALL DETAILS S -g RETAINING WALL DETAILS S -9 ROAD PROFILES R -1 RIO ROAD IMPROVEMENT PLAN R -2 DRAINAGE AREAS DP -1 DRAINAGE PROFILES DP-2 DRAINAGE PROFILES DP -3 DRAINAGE CALCULATIONS DP -4 STORMWATER MANAGEMENT PLAN SWM -1 STORMWATER MANAGEMENT CALCULATIONS SWM -2 LANDSCAPING PLAN LL -1 LANDSCAPING DETAILS LL -2 LIGHTING PLAN LL -3 LIGHTING DETAILS LL -4 TONEWATER SHEETS 15 TOTAL SHEETS 38 41 NOTE: THE ROW DEDICATION, PUBLIC DRAINAGE EASEMENTS, AND RWSA EASEMENT MUST BE RECORDED PRIOR TO THE ISSUANCE OF THE FIRST CERTIFICATE OF OCCUPANCY. SETBACKS.- GENERAL NOTES OWNER: ALBEMARLE HOUSING IMPROVEMENT PROGRAM, INC ENGINEER. COLLINS ENGINEERING ZONING 2127 BERKMAR DRIVE 800 E. JEFFERSON STREET PLANNING CHARLOTTESVILLE, VA 22901 CHARLOTTESVILLE, VA 22902 COMMON OPEN SPACE /RECREA RONAL AREA(RESERVED FOR PUBLIC USE): 4.642 ACRES/ 0.548 ACRES TELEPHONE. (434)293 -3719 DEVELOPER. PINNACLE CONSTRUCTION & DEVELOPMENT CORPORATION FAX. (434)245 -0300 (CLUBHOUSE /COMMUNITY BUILDING). 4439 SQ.FT. 1821 AVON ST, SUITE 200 CONTACT MR. SCOTT COLLINS, P.E. NUMBER OF EMPLOYEES. N/A CHARLOTTESVILLE, VA 22902 EMAIL: scott0collins- engineering.com 88 UNITS (2 & 3 BEDROOMS): 2 SPACES/UNIT = 176 SPACES (PER ZONING ORDINANCE) PHONE: 434 - 979 -2900 PRE- APPLICA77ON CONFERENCE- AUGUST 17, 2009 TAX MAP NO.: 61 -182, ALBEMARLE COUNTY HOUSING IMPROVEMENT, INC. d' DB. 3775, PG 664 & 678. ACREAGE. 2.796 ACRES PARKING PROVIDED: 61 -183, ALBEMARLE COUNTY HOUSING IMPROVEMENT, INC. DB. 3775. PG 664 & 678 ACREAGE. 2.884 ACRES 61 -183A, ALBEMARLE COUNTY HOUSING IMPROVEMENT, INC DB. 3775. PG 664 & 678 ACREAGE. 0.915 ACRES ACREA GE, • 6.595 ACRES ZONING. PRO, PLANNED RESIDENTIAL DEVELOPMENT ZONING, ZMA 04 -22 (PROFFERS ATTACHED) N NOTE. • VARIATION APPROVED 1114109 FOR (1) RELOCA7ION OF BUILDING 11, (2) RELOCATION OF OPEN SPACE, (3) CHANGING ORIENTATION OF PARKING LOTS ON SOUTH SIDE OF SITE, (4) DISTURBANCE OF TREE PR07EC77ON O AREA, (5) SPLITTING SINGLE BUILDING INTO BUILDINGS 3 AND 4, (6) PROVIDE RETAINING WALLS ON NORTH SIDE SUBDIVISION STREETS. OF DEVELOPMENT. USE. MUL77- FAMILY RESIDEN7AL UNI7S (4 BUILDINGS) TOPO & SURVEY COMMUNI TY CENTER (1 UNI T) U BUILDING #1 (16 UNITS) = 11,200 SF DATUM: BUILDINGS #2 (24 UNITS)= 10,230 SF BENCHMARK. BUILDINGS #3 (20 UNITS)= 10,230 SF BUILDINGS #4 (28 UNITS)= 10,230 SF COMMUNITY CENTER = 2,540 SF EXiS77NG VEGET4770N. TOTAL SF OF ALL BUILDINGS= 44,430 SF DENSITY 88 UNIT FOR RENT APARTMENT COMPLEX (2 BEDROOM AND W 3 BEDROOM UNITS) Wl7H CLUBHOUSE (13.34 UNITS /ACRE) BUILDING HEIGHT MAXIMUM BUILDING HEIGHTS SHALL NOT EXCEED 3 STORIES AND A BASEMENT CRITICAL SLOPE. LEVEL. MAXIMUM HEIGHT OF BUILDINGS SHALL BE 35 FEET. ANY BUILDING D TALLER THAN 35 FEET SHALL REQUIRE ADDIiTONAL SETBACKS FROM THE PROPERTY LINES SETBACKS.- DATE DEPARTMENT OF COMMUNITY DEVELOPMENT FRONT YARD SETBACK (FROM R /W): 12 FEET ZONING SIDE YARD SETBACK (FROM P /L): 20 FEET PLANNING REAR YARD SETBACK (FROM P /L): 20 FEET COMMON OPEN SPACE /RECREA RONAL AREA(RESERVED FOR PUBLIC USE): 4.642 ACRES/ 0.548 ACRES RECREATIONAL AREAS OPEN PLANTING FIELD AND COMMUNITY BUILDING NON - RESIDENTIAL USE (CLUBHOUSE /COMMUNITY BUILDING). 4439 SQ.FT. PAVED PARKING AND VEHICLE CIRCULA Ti0N AREA: a 729 ACRES NUMBER OF EMPLOYEES. N/A PARKING REQUIRED. 88 UNITS (2 & 3 BEDROOMS): 2 SPACES/UNIT = 176 SPACES (PER ZONING ORDINANCE) PARKING DE7ERM /NA77ON LETTER DA7ED 9111108 APPROVED 90 PARKING SPACES FOR 84 UNITS WITH 7HE FOLLOWING CONDITIONS. d' (1) ADD177ONAL PARKING MAY BE REQUIRED IF THE DWELLING UNITS ARE CONVERTED TO PRIVATE OWNERSHIP. (2) AN AREA THAT CAN ACCOMMODATE AN ADDITIONAL 15 PARKING SPACES MUST BE RESERVED ON 7HE PLAN. PARKING PROVIDED: 113 SPACES (INCLUDING (6) HANDICAPPED SPACES) NOTE-* 7HE PROPOSED PARKING MEETS THE REQUIRED 110 SPACES AS N07ED DURING THE ZONING AND PLANNING FOR THE DEVELOPMENT. THE REQUIRED NUMBER OF SPACES IS REDUCED DUE TO THE PLANNED BUS STOP AT 7HE ENTRANCE OF THE DEVELOPMENT AND AFFORDABLE NATURE OF THE APARTMENT COMPLEX. IMPERVIOUS COVER: BUILDINGS: 1.019 ACRES ROADS /PARKING: a72_ Mart] N SIDEWALKS. • a205 ACRES AMOUNT OF ONSI7E IMPERVIOUS AREA: 1.953 ACRES O PERCENTAGE OF ONSI7E IMPERVIOUS AREA: 29.6 X (EN77RE AREA OF (3) PARCELS) SUBDIVISION STREETS. CURB & GUTTER WA TERSHED: MEADOW CREEK TOPO & SURVEY PROVIDED BY KIRK HUGHES & ASSOCIATES, TOPOGRAPHIC SURVEY (SEPTEMBER U 21, 2005 - REVISED MARCH 1, 2007, AND FIELD VERIFIED SEPTEMBER 2009.) DATUM: NAD -88 (VER77CAL DATUM) BENCHMARK. CITY OF CHARLOTTESVILLE GIS CON7ROL MONUMENT STA77ON #135, A BRASS DISK LOCATED OFF PEN PARK ROAD APPROXIMATELY 0.1 MILE EAST OF THE IN7ERSEC710N OF RIO ROAD EAST. ELEVA770N= 468.09'. EXiS77NG VEGET4770N. TREES AS SHOWN LIGH77NG. LIGH77NG TO BE INSTALLED AS SHOWN ON THE ATTACHED LIGH77NG PLAN IN ACCORDANCE WI7H ALBEMARLE W COUNTY STANDARDS PHASING. NO PHASIN G S PROPOSED I OP SED FOR THE DEVELOPMENT AT THiS TIME. CRITICAL SLOPE. TOTAL AREA WITH CRITICAL SLOPES. 1.30 ACRES D X OF PROPERTY WI7H CRITICAL SLOPES.- 6.1Z NUMBER OF BUILDINGS IMPACTED BY CRI77CAL SLOPES.2 BUILDINGS PROPOSED CRI77CAL SLOPE IMPACTS• a40 ACRES X OF TOTAL CRI77CAL SLOPES IMPAC7ED. 30.2% O A WAIVER REQUEST HAS BEEN APPROVED BY THE PLANNING COMMISSION. FLOODPLA /N. FLOODPLA/N LOCATED ON THE PROPERTY PER FEMA MAP #51003CO287D. HISTORIC STRUCTURES. • NO HISTORIC STRUCTURES ARE LOCATED ON THE PROPERTY. STORMWATER MANAGEMENT THE REGIONAL SWM FACILITY SHOWN ON THE PLAN IS DESIGNED TO SERVE BOTH THE TREESDALE PARK U PROJECT AS WELL AS THE PROPOSED STONEWA7ER DEVELOPMENT WHICH IS PLANNED ADJACENT TO THE SUBJECT SI7E TO THE SOUTH. PER THE AGREEMENT BETWEEN THE OWNER AND THE OWNER OF STONEWA TER, w RIO ROAD HOLDINGS, LLC, 7HE FACILITY MAY BE LOCA7ED ON BOTH PROPERTIES AND MA/N7ENANCE ACCESS J SHALL BE PROVIDED WA 7HE MAINTENANCE EASEMENT AND SHARED GREENWAY/STORMWATER MAINTENANCE J EASEMENT SHOWN ON THE PLAN. THE STORMWATER MANAGEMENT PLAN WAS APPROVED WITH THE STONEWA7ER Z DEVELOPMENT AND THIS APPROVED DESIGN iS SHOWN WITHIN THE CONSTRUC7ION PLANS AS A REFERENCE ONLY, INCASE THiS DEVELOPMENT PRECEDES STONMWATER. S17E TRIP GENERATION AND LAND USE RE CODE 77H EDI77ON FOR PROPOSED 88 DWELLING UNITS: U U APARTMENTS (CODE 220) - 88 D.U. D ADT.• RATE - 592 VPD (296 VPD EN7FR 1296 VPD EXiT) ¢ AM PEAK RATE. • 49 VPH (14 VPH ENTER 135 VPH EXIST) ¢ PM PEAK RATE 59 VPH (36 VPH ENTER /23 VPH EXIST) TTAILWAY CLASS A TYPE 1 LOW MAINTENANCE PEDESTRIAN PATH SHALL CONNECT THE 7RREESDALE PARK DEVELOPMENT TO W THE GREEN DESIGN OF THE WAY TRAIL LOCH TED ON THE STONMWATER AND TREESDALE PROPERTY THE TRAIL WAY IS AN 8' WIDE ASPHAL T PATCH WI TH A 1' GRAVEL SHOULDER ON DTHER SIDE FOR A TOTAL WIDE OF W 10; SEE SHEET S -3 FOR DETAILS FIRE FLOW EXIS77NG FIRE HYDRANT AT PEN PARK AND RIO ROAD. 2600 GPM AT 20 PSi X ES77MA7ED NFF FOR DEVELOPMENT 1500 GPM (ALL BUILDINGS SPRINKLED) ESTIMATED GPM OF FIRE HYDRANTS WITHIN DEVELOPMENT 2000 GPM LANDSCAPING PLAN. LANDSCAPING TO BE INSTALLED AS SHOWN ON 7HE ATTACHED LANDSCAPE PLAN IN ACCORDANCE WITH ALBEMARLE COUNTY STANDARDS S wit on( y /U %5-1,Zo to wPv -alp tn- ono( t APPROVALS DATE DEPARTMENT OF COMMUNITY DEVELOPMENT ZONING M PLANNING ENGINEER INSPECTIONS Z ARB DEPARTMENT OF FIRE RESCUE ALBEMARLE COUNTY SERVICE AUTHORITY VIRGINIA DEPARTMENT OF TRANSPORTATION opl> 1 SCOTT R� COLLINS'Z Lic. o. 035791 � ` ;P, ���' + n �sSIONAL E�Ol 0 0 0 0 0 Q n Cn cm" N N M M � er Z M M F- Z Z d' UJI z WN CL WN N W F- O O O F- U U U z J IZZ ai W = W d W D D 0 O O O U C)L J U F_ 0-4 w w J J J U Z I c, U U � D ¢ Q ¢ Ul w W �-+ W O Z J X X tJl W W W °- M m m ¢ ¢ ¢ w t—� LU w LU C) 00 a J I— Cl- nW w w o LU 0 WWW Wul ii i 0 0 0 0 0 Q n Cn cm" N N M M � er Z M M d' z WN CL WN N W F- � .. "i s J Q ai W W H U. W L9 %�e U) Z O C)L J ^ CL. F_ 0-4 w F_ Wx U J I c, � o y , Ul w W �-+ W 0 w w t—� w ttatttttttt� C) 00 J I— w a JOB NO. 092028 SCALE AS NOTED SHEET N0. T -1 TRUCK TURN EXHIBIT INTERMEDIATE SEMITRAILER (WB -40) DESIGN VEHICLE t� IN MOR 0• ?�♦�M . ,'� •�� �� Al "7 BEVELED UNITS �o ^M1141MUM EXTEND GEOSYNTHETIC REINFORCEMENT TO WITHIN 2 INCHES OF THIN LOWER BLOCK FACE 10" MINIM F� AnchorTM Diamond® X INFORCEMENT CONNECTION WX )(NOT TO SCALE) 10.6°}{ FINISHED IY' GRADE . I 1 4� L REINFORCEMENT LENGTH GEOSYNTHETIC REINFORCEMENT 4 "DRAIN TILE (ELEVATION VARIES) 6" MINIMUM COMPACTED GRANULAR LEVELING PAD w- =WIDTH OF OVERSIZING De = DEPTH OF EXCAVATION L = LENGTH OF GEOSYNTHETIC REINFORCEMENT Wo - (2'De) +L +6" was AnchorTM Diamond" X 1:1 EXCAVATION OVERSIZING Bmd^ ANCHOR WALL SYSeFM.0 INC. WX (SCALE: 318 "= I'-0 ") ME-TER SL -'x f.VFII5el�4fi A {7{ME1iFD#1 e 7iifE1'i7ti 1 1/2' 3°1' S''3'' 3s- . °1' , al 3'8° 3' S' MIN A, , A' S. W4.7 Mjw J•' MIN- GREAeTYR THAN 4° PROPOSALS 'WILT. HE SLIB 'TTE -S -. h� t•,:. ''T+'�t "��;v5.1�,3.1�9s�' a"��:1.: •�: � �:?i ",Y7;,�:Yir.,�i� I AM A €VT TE € }tat�5 TYRE E •.-- FAIImw =wmz lA INS I IFrI IT Tcl reA° Cr 111 1 SECTION IN MOR 0• ?�♦�M . ,'� •�� �� Al "7 BEVELED UNITS �o ^M1141MUM EXTEND GEOSYNTHETIC REINFORCEMENT TO WITHIN 2 INCHES OF THIN LOWER BLOCK FACE 10" MINIM F� AnchorTM Diamond® X INFORCEMENT CONNECTION WX )(NOT TO SCALE) 10.6°}{ FINISHED IY' GRADE . I 1 4� L REINFORCEMENT LENGTH GEOSYNTHETIC REINFORCEMENT 4 "DRAIN TILE (ELEVATION VARIES) 6" MINIMUM COMPACTED GRANULAR LEVELING PAD w- =WIDTH OF OVERSIZING De = DEPTH OF EXCAVATION L = LENGTH OF GEOSYNTHETIC REINFORCEMENT Wo - (2'De) +L +6" was AnchorTM Diamond" X 1:1 EXCAVATION OVERSIZING Bmd^ ANCHOR WALL SYSeFM.0 INC. WX (SCALE: 318 "= I'-0 ") ME-TER SL -'x f.VFII5el�4fi A {7{ME1iFD#1 e 7iifE1'i7ti 1 1/2' 3°1' S''3'' 3s- . °1' , al 3'8° 3' S' MIN A, , A' S. W4.7 Mjw J•' MIN- GREAeTYR THAN 4° PROPOSALS 'WILT. HE SLIB 'TTE -S -. T 1 IB ODOR Hlw5rs I t c I I I LIFT HANDRAIL BUILDING r,Al CE I WALL 1 "H I MAX HT. =10' iRT TM Diamond® XAL BASE PREP SCALE) Rmd ANCNORWAi sYSre.Nr. SEGMENTED WALL DETAIL NO SCALE TOP OF SEGMENT MIN. WALL 42" SITE GRADE RAIL ° 141 a SITE ° WALL X- LL R�4IL I�L'T�IL NOT TO SCALE TYPICAL METER VAULT iti1 T.S_ FIG_ VA- 7A TD_ ii 8 2' 1' 2 1.33' SIDE VIEW Y z•" C7IA.METEn DRILLED 401.1 fca Tour-1-i READ 'WITS, TCP VIEW 3` LJLAMFI R FLAT 3 E A1WwZ SURF ACE +11isi FME,ATH :♦' X 36' A,LUWNUM ACCESS H d4 T C4i 2 GUARDRAIL NOTE.• GUARDRAIL POST SHALL PENETRA TE 1ST LAYER OF GEO -GRID GRASS STRIP r- -SIDEWALK r•- -CURB &GUTTER X68 STONE-3 •...., . � . .. 6 GATE • •' • VALVE LF ,� •• / •' 8' X 6" ]K.__TEE 2500 P.S.I. CONCRETE " = BASE AND THRUST ► •:r - -- BLOCK AGAINST UNDISTURBED STABLE SOIL STEEL PILE WHEN THE SOIL IS DISTURBED OR WHEN MAIN THREADED RODS IN ALL INSTALLATIO NS. A HYDRANT IS LOCATED IN A FILL, ANCHOR MAIN O RODS SHALL BE GALVANIZED THE VALVE TO THE HYDRANT WITH 2-3/4" OR ASPHALT COATED THREADED RODS IN ADDITION TO POURING CONCRETE. IF NECESSARY, A STEEL PILE SHALL BE USED AS ADDITIONAL SUPPORT NOTE 1. SURROUND WEEP HOLES WITH GRAVEL AND KEEP FREE OF CONCRETE. 2. MAINTAIN A 3' MIN. COVER FROM THE MAIN TO THE FIRE HYDRANT ( INCLUDING DITCHES 3. FINISHED GRADE SHALL SLOPE AWAY FROM THE FIRE HYDRANT AND VALVE BOX. 4. THE GATE VALVE IS ALLOWED IN SHOULDER OR BEHIND THE DITCH. IT IS NOT ALLOWED IN THE DITCH. 5. FIRE HYDRANTS SHALL BE INSTALLED AT LOCATIONS WHERE WEEP HOLES ARE ABOVE THE PREVAILING GROUNDWATER ELEVATION. IF REQUIRED TO BE IN WET AREAS, THE WEEP HOLES SHALL BE PLUGGED AND THE HYDRANT SHALL BE PUMPED DRY. LANE O ROAD RETAINING WALL & GUARDRAIL NOT TO SCALE T 5' 3' 2.5' 12' TYPICAL EIRE HYDRANT ASSEMBLY DETAIL N.T.S. FIG. W -4 TD -7 GOOD FOUNDATION MATERIAL ROCKY FOUNDATION MATERIAL MNTIAL BACKF1LL BEDDING I STONE STABLE SOIL ROCK ` SCRAPE THE BOTTOM OF THE TRENCH. REMOVE ALL STONES TO INSURE THE PIPE DOESN'T REST ON ROCK AND THEN COMPACT TW SOiL OR PROVIOE A 4- BEDDING OF #68 STONE. FOUNDATION IN P SOIL UNDER -CUT CONDITION UNSTA SOIL INMAL BAC.KFILL LONE STABLE SOIL OR X65 STONE NOTE - 1. NO ROCKS SHALL BE ALLOWED WITHIN 24' OF THE WAVER LINES. 2ND ROCKS LARGER THAN 6' IN ANY DIMENSION SHALL BE ALLOWED ABOVE THE INITIAL BAC:KFILL. 3 ^THE INITIAL BACKFILL SHALL BE PLACED AND COMPACTED IN 6' LIFTS. 4.1N0 ORGANIC OR FROZEN MATERIAL OR DEBRIS SHALL BE ALLOWED iN THE TRENCH. S. BELL HOI FS SHALL BE DUG OUT IN ALL CASES. DUCTILE IRON WATER PIKE INSTALLATION & BFI)DING NOTE: HYDRANT MUST BE W EQUIPPED WITH CHARLOTTES- THE GRASSES WILL INDEFINITELY COMPETE WITH THE WETLAND PLANTS. VILLE THREADS NMICH IS 71 cc2tcT4kt T Iii I:L� A°$ O0w=TE ICL4 $ A -4 If M9iILiCau TH !M E'G}IlC, A" CU4E THE F L 'I}i'1!TI4 QF it}EE P s �T V, 8 N u> t l t a� THE LOCAL STANDARD. 1. BEDDING THICKNESS REQUIREMENT SHOO uE�rTww rlt-M 0-V TYPES % 1MTW9 rTm T}� TR9MACJlTED aET eTAgLi 1YYAMr: tiJVi t09E(4 IAAfiri T6{ /A'RM►Y''.iL d1F YrIE E� LENGTH OF BRANCH VARIES 6' MIN 3: RLw" WAS of T Mw my at T'91mo T TRT11 Imw FLOW O R SY USM ALE 0GWSTWXTRIIE ,RIWT WITH ADMO fll 6*W 2' TO 10' � S (270-) ILA ', f I•.CATN' L• SI r..wn III r".5 NMJ• `M_1 O:•L -F OIL'f :i4V Q4" 14). .0 L'.. 7F: x:5 PIX C• A i)A) 7 CU. FT. IALVE BO ..Yi,: JR' %;: I ! h� t•,:. ''T+'�t "��;v5.1�,3.1�9s�' a"��:1.: •�: � �:?i ",Y7;,�:Yir.,�i� I AM A €VT TE € }tat�5 X68 STONE-3 •...., . � . .. 6 GATE • •' • VALVE LF ,� •• / •' 8' X 6" ]K.__TEE 2500 P.S.I. CONCRETE " = BASE AND THRUST ► •:r - -- BLOCK AGAINST UNDISTURBED STABLE SOIL STEEL PILE WHEN THE SOIL IS DISTURBED OR WHEN MAIN THREADED RODS IN ALL INSTALLATIO NS. A HYDRANT IS LOCATED IN A FILL, ANCHOR MAIN O RODS SHALL BE GALVANIZED THE VALVE TO THE HYDRANT WITH 2-3/4" OR ASPHALT COATED THREADED RODS IN ADDITION TO POURING CONCRETE. IF NECESSARY, A STEEL PILE SHALL BE USED AS ADDITIONAL SUPPORT NOTE 1. SURROUND WEEP HOLES WITH GRAVEL AND KEEP FREE OF CONCRETE. 2. MAINTAIN A 3' MIN. COVER FROM THE MAIN TO THE FIRE HYDRANT ( INCLUDING DITCHES 3. FINISHED GRADE SHALL SLOPE AWAY FROM THE FIRE HYDRANT AND VALVE BOX. 4. THE GATE VALVE IS ALLOWED IN SHOULDER OR BEHIND THE DITCH. IT IS NOT ALLOWED IN THE DITCH. 5. FIRE HYDRANTS SHALL BE INSTALLED AT LOCATIONS WHERE WEEP HOLES ARE ABOVE THE PREVAILING GROUNDWATER ELEVATION. IF REQUIRED TO BE IN WET AREAS, THE WEEP HOLES SHALL BE PLUGGED AND THE HYDRANT SHALL BE PUMPED DRY. LANE O ROAD RETAINING WALL & GUARDRAIL NOT TO SCALE T 5' 3' 2.5' 12' TYPICAL EIRE HYDRANT ASSEMBLY DETAIL N.T.S. FIG. W -4 TD -7 GOOD FOUNDATION MATERIAL ROCKY FOUNDATION MATERIAL MNTIAL BACKF1LL BEDDING I STONE STABLE SOIL ROCK ` SCRAPE THE BOTTOM OF THE TRENCH. REMOVE ALL STONES TO INSURE THE PIPE DOESN'T REST ON ROCK AND THEN COMPACT TW SOiL OR PROVIOE A 4- BEDDING OF #68 STONE. FOUNDATION IN P SOIL UNDER -CUT CONDITION UNSTA SOIL INMAL BAC.KFILL LONE STABLE SOIL OR X65 STONE NOTE - 1. NO ROCKS SHALL BE ALLOWED WITHIN 24' OF THE WAVER LINES. 2ND ROCKS LARGER THAN 6' IN ANY DIMENSION SHALL BE ALLOWED ABOVE THE INITIAL BAC:KFILL. 3 ^THE INITIAL BACKFILL SHALL BE PLACED AND COMPACTED IN 6' LIFTS. 4.1N0 ORGANIC OR FROZEN MATERIAL OR DEBRIS SHALL BE ALLOWED iN THE TRENCH. S. BELL HOI FS SHALL BE DUG OUT IN ALL CASES. DUCTILE IRON WATER PIKE INSTALLATION & BFI)DING NTS FlG, W-2 r��17 GENERAL NOTES: i u W 1. TK OMCTi1CIt WAftM VWL K FRNM BY TAI,IIICAXD DWAM THE GRASSES WILL INDEFINITELY COMPETE WITH THE WETLAND PLANTS. Ln 71 cc2tcT4kt T Iii I:L� A°$ O0w=TE ICL4 $ A -4 If M9iILiCau TH !M E'G}IlC, A" CU4E THE F L 'I}i'1!TI4 QF it}EE P s �T V, 8 N u> t l t a� g. T r >< s° Wit" r1iE}I CA1I1Apr TYPE C Y `IR Aw 1. BEDDING THICKNESS REQUIREMENT SHOO uE�rTww rlt-M 0-V TYPES % 1MTW9 rTm T}� TR9MACJlTED aET eTAgLi 1YYAMr: tiJVi t09E(4 IAAfiri T6{ /A'RM►Y''.iL d1F YrIE E� CRy lMliErURJN SC T R. COLLINS', �% 1---1 3: RLw" WAS of T Mw my at T'91mo T TRT11 Imw FLOW O R SY USM ALE 0GWSTWXTRIIE ,RIWT WITH ADMO fll 6*W PERT i ICl7LAR � S �`!r ILA ', f I•.CATN' L• SI r..wn III r".5 NMJ• `M_1 O:•L -F OIL'f :i4V Q4" 14). .0 L'.. 7F: x:5 PIX C• A i)A) I Vi. "� �. , n y;. jam': a :riLlri�i ..Yi,: JR' %;: I ! h� t•,:. ''T+'�t "��;v5.1�,3.1�9s�' a"��:1.: •�: � �:?i ",Y7;,�:Yir.,�i� I AM A €VT TE € }tat�5 TYRE E •.-- FAIImw =wmz lA INS I IFrI IT Tcl reA° Cr 111 1 SECTION cP. 2A. J O c _ T.. ^MA Tw � Bi? TT ti�Mp� PARALLEL OR Z 0 C T ll U"S . F -F `FOP = } 40.Z I _E. TM DF PIPE Lha. G'. Ni4 P' ^3LEC'T Jh _ 00 HII�00160000 acau+a43O000000 ycr •.4hC nF=I -C.M. • 3 NTS FlG, W-2 r��17 GENERAL NOTES: i u W 1. TK OMCTi1CIt WAftM VWL K FRNM BY TAI,IIICAXD DWAM THE GRASSES WILL INDEFINITELY COMPETE WITH THE WETLAND PLANTS. Ln 71 cc2tcT4kt T Iii I:L� A°$ O0w=TE ICL4 $ A -4 If M9iILiCau TH !M E'G}IlC, A" CU4E THE F L 'I}i'1!TI4 QF it}EE P s �T V, 8 N u> t l t a� g. T r >< s° Wit" r1iE}I CA1I1Apr TYPE C Y `IR Aw 1. BEDDING THICKNESS REQUIREMENT SHOO uE�rTww rlt-M 0-V TYPES % 1MTW9 rTm T}� TR9MACJlTED aET eTAgLi 1YYAMr: tiJVi t09E(4 IAAfiri T6{ /A'RM►Y''.iL d1F YrIE E� CRy lMliErURJN SC T R. COLLINS', �% 1---1 3: RLw" WAS of T Mw my at T'91mo T TRT11 Imw FLOW O R SY USM ALE 0GWSTWXTRIIE ,RIWT WITH ADMO fll 6*W PERT i ICl7LAR U Lie. No. 035791 2� ���� /7 /0'�4 Ir IPYI P T C N tlltE �F P}ECJ�6 }i FL A ILA I (K4° rRJNIE1.lME'6 I•.CATN' L• SI r..wn III r".5 NMJ• `M_1 O:•L -F OIL'f :i4V Q4" 14). .0 L'.. 7F: x:5 PIX C• A i)A) I �SS jONAL E *N(('1 � L sOF IE AM A €VT TE € }tat�5 TYRE E •.-- FAIImw =wmz lA INS LEAST TWICE A YEAR IN THE FIRST THREE YEARS AFTER CONSTRUCTION, 111 1 SECTION 0 0•o O o o. o. ga °a�a --g' -" T NATHO L TYPEIQRI :. M7 AO(1t "M " A20RE111017E J O O T.. ^MA Tw � Bi? TT ti�Mp� PARALLEL OR Z 0 C T ll U"S . F -F `FOP = } 40.Z I _E. TM DF PIPE NTS - 00 HII�00160000 acau+a43O000000 AN Ai' OMWE ROUTE WHIN THE RKW.1 �OF WAY OF AI �Frld�WT1tNgt�AY IFFAD =7TWT am p~ � F..,- � 0 � 0 POR :=-A -S r& EL ,E RAI. -'LC: J,yT 4 BE.0 B l? M TF dY' A r_C, . 1-AJi)v:.'F SFF. SWrT 'v F 1'•0• U li1roT1M,u �R AS BE LOCATED B� VEHICLE STOP tt88��55,,.. E GSTNG LI %? POI FRE l4watOw MVP fILM, ETC- A=BLE RWTA? 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N w a w 0- w a r l # o '' .�-.., , a IANI <A 111 f IA N1 W W W .y M,II_Y1QS GENERAL NOTE W UJ a ,OP:. JTE Mi E ' A Li,. ..r:Cd3 SLOP OW-M31 __CPC. w iQ! 04 XftffW iT OF '1*41l� 14WAII" 0 i W J ..L IX. Ofl 7t x a F F I '�HCUI! T <.. _=1 FJR f H'�F" fn�.!IIIY.�'•. I SFCCrrWX' 0 o� T 1 RLiLiL1M� _ .. EL ISC ED n_T E-_!'-.M .. .. J'NFDR1IIL ':'- F'C "IG F' �T � 0 Wz . � .- RC is :,CIART.,I. C= 'TFIt3 C3T.s -1011 P,F':'. WAS NTS FlG, W-2 r��17 GENERAL NOTES: 4. PERMANENT SEEDING (VESCH SPEC. 3.32) SHALL BE PROHIBITED, AS W 1. TK OMCTi1CIt WAftM VWL K FRNM BY TAI,IIICAXD DWAM THE GRASSES WILL INDEFINITELY COMPETE WITH THE WETLAND PLANTS. Ln 71 cc2tcT4kt T Iii I:L� A°$ O0w=TE ICL4 $ A -4 If M9iILiCau TH !M E'G}IlC, A" CU4E THE F L 'I}i'1!TI4 QF it}EE P s �T V, 8 N u> t l t a� g. T r >< s° Wit" r1iE}I CA1I1Apr TYPE C Y `IR Aw 1. BEDDING THICKNESS REQUIREMENT SHOO uE�rTww rlt-M 0-V TYPES % 1MTW9 rTm T}� TR9MACJlTED aET eTAgLi 1YYAMr: tiJVi t09E(4 IAAfiri T6{ /A'RM►Y''.iL d1F YrIE E� CRy lMliErURJN SC T R. COLLINS', �% 1---1 3: RLw" WAS of T Mw my at T'91mo T TRT11 Imw FLOW O R SY USM ALE 0GWSTWXTRIIE ,RIWT WITH ADMO fll 6*W PERT i ICl7LAR U Lie. No. 035791 2� ���� /7 /0'�4 Ir IPYI P T C N tlltE �F P}ECJ�6 }i FL A ILA I (K4° rRJNIE1.lME'6 Ai6T L NE CLASS -4. s_ ro rIa a x 4• rI�__�+eea raarr _rya rpt ,� Tn ��1�_T116R�,MSi•D�FiII tir lNlgF' fLf MNrMtII I �SS jONAL E *N(('1 � L sOF IE AM A €VT TE € }tat�5 TYRE E •.-- FAIImw =wmz lA INS LEAST TWICE A YEAR IN THE FIRST THREE YEARS AFTER CONSTRUCTION, W 4► f111 I H Ntr SECTION 0 0•o O o o. o. ga °a�a --g' -" T NATHO L TYPEIQRI :. M7 AO(1t "M " A20RE111017E PI. VEW OF CD-2 O O T.. ^MA Tw � Bi? TT ti�Mp� PARALLEL OR Z 0 J TM DF PIPE NTS Sam WLL. Pw [XIS V 9 Aal: 00 HII�00160000 acau+a43O000000 AN Ai' OMWE ROUTE WHIN THE RKW.1 �OF WAY OF AI �Frld�WT1tNgt�AY IFFAD =7TWT am p~ � F..,- � 0 � 0 � 0 'v F 1'•0• U li1roT1M,u �R AS BE LOCATED B� VEHICLE STOP tt88��55,,.. E GSTNG LI %? POI FRE l4watOw MVP fILM, ETC- A=BLE RWTA? A�FN1MM L IMTX ARME4ATQ AND nwoewr Ww TAM TO APPROMISL 9LItB� P/OfEAlNT - 2 OitiLET P!E SFIAII. tE0/i AY TIE EOfE OP TIE TAAlIE1. LAE PAYEIlNT AID � @PE � t7i A til/� PIWALIi1; TO T!E Sia!!>ER l4OPE 2 k 10L t; 0000000 000400 , # 0 0 0 0 C3 ttfl CIt 0000 � �� z W CID D J r Sr £ lriiil TAN PALM 'T /i Y TtMT EMI V. �tTIpR6 EOM "4 4i � U) 1IYE7Tr ELEVATM OF REiENrW TMMW�,OTQi 4R SfN&TUIE: ORDW IL ek WWffWs ''MWi,�it'tE WW PPE ARE 'M AhD T4RIi5A 7. OLYW IMP![ TO ff iEC MY COMEM TO M-IM atm DROW STANDARD COMBNATWIN UNDERDRANIi (AT GRADIE SAGS AND BRIDM APPR DACHES) Q Q Q 000000 OIiO000 i _7 O W RA�P�9�pWre�Aw 1��ryC,♦M! OR TAN ADITI} 1, SEF.Tow F+4� AX0 iN" 1A 4 TALE AT Tts 1 167 Er 9 NI16 K i TIC• , ��PA 1�F� 2: 2: 2: 0 8 0 Ai O 0YO 4 000000 Q Ln C� = Z ° W FEMNUCiCI.# M 0 THE AT X% . [ AS 100 Of OM 4. PERMANENT SEEDING (VESCH SPEC. 3.32) SHALL BE PROHIBITED, AS NOTE : 1 mer ME THE GRASSES WILL INDEFINITELY COMPETE WITH THE WETLAND PLANTS. Ln Ln g. T r >< s° Wit" r1iE}I CA1I1Apr TYPE C Y `IR Aw 1. BEDDING THICKNESS REQUIREMENT SHOO TOE OF ILL CRy lMliErURJN w w w 4 PARALLEL & PERPENDICULAR TTIwM tRAFrICF "M I A _�.�91M OF PAYEMEM ILA I (K4° rRJNIE1.lME'6 � I (111111 TTPE ISELECF ANTENAL) CONDRETE WT". INSIDE AND CUT. L sOF IE TRENCH PLACENM FILL � TOE � Fu. •.-- FAIImw =wmz lA INS LEAST TWICE A YEAR IN THE FIRST THREE YEARS AFTER CONSTRUCTION, W 4► f111 I H Ntr SECTION 0 0•o O o o. o. ga °a�a --g' -" T NATHO L TYPEIQRI :. M7 AO(1t "M " A20RE111017E PI. VEW OF CD-2 O O O 1$t� 4` TRLIYCATED OOIE, OR Z 0 J TM DF PIPE NTS Sam WLL. Pw [XIS V 9 Aal: 00 HII�00160000 acau+a43O000000 MOTH WILL PE 79 PS MM I I 70 MM1i p~ � F..,- � 0 � 0 � 0 'v F 1'•0• U x L IMTX ARME4ATQ AND nwoewr Ww TAM TO APPROMISL 9LItB� P/OfEAlNT - 2 OitiLET P!E SFIAII. tE0/i AY TIE EOfE OP TIE TAAlIE1. LAE PAYEIlNT AID � @PE � t7i A til/� PIWALIi1; TO T!E Sia!!>ER l4OPE 2 k 10L t; 0000000 000400 , # 0 0 0 0 C3 ttfl CIt 0000 � �� z W CID D J J J 4i � U) 1IYE7Tr ELEVATM OF REiENrW TMMW�,OTQi 4R SfN&TUIE: ORDW IL ek WWffWs ''MWi,�it'tE WW PPE ARE 'M 117" 0046400 400000 � 7. OLYW IMP![ TO ff iEC MY COMEM TO M-IM atm DROW STANDARD COMBNATWIN UNDERDRANIi (AT GRADIE SAGS AND BRIDM APPR DACHES) Q Q Q 000000 OIiO000 i _7 O 0 Q 2: 2: 2: 0 8 0 Ai O 0YO 4 000000 Q Ln C� = Z ° W m m m 1-4 s' 1Ae um - ---� =� U > .~•t Z Q Q Q TRUNCATED DOME Q TAIL �h►AIINING DETAIL >DETA>vli. N w a w 0- w a r l # o '' O W W W CC -12 DETECTA LE WARI'll SURFACE M,II_Y1QS GENERAL NOTE W UJ x w iQ! 04 XftffW iT OF '1*41l� 14WAII" 0 i W J H x a FRAME do COVER LANDSCAPING NOTES FOR ENHANCED EXTENDED DETENTION FACILITY: (SEE F1Q S- i -D,E) 1. ONLY ONE -HALF OF THE LOW- AND -HIGH MARSH DEPTH ZONES STREET SURFACE OR SHALL BE PLANTED. AT LEAST 5 TO 7 EMERGENT WETLAND SPECIES, 9 "SIDE RETAINING WALL I- 4' -0" - 9 "SIDE RETAINING WALL NON PAVED AREA INCLUDING A MINIMUM OF TWO SPECIES FOR EACH OF THE MARSH 11" STEPS 1 PLAN PRIVATE WALK OR LANDING 2' -0 "MIN 1 /2 "THROUGH JOINT 1 _ -- _ ' rte'-•- -L�i•� SLOPED AREA DEPTH ZONES (HIGH AND LOW), SHALL BE USED. CERTAIN SPECIES, INCLUDING CATTAILS, SHALL NOT BE SELECTED BECAUSE THOUGH THEY Q �•• AJAX MAY PROVIDE EXCELLENT POLLUTANT REMOVAL CHARACTERISTICS, THEY CAN BE INVASIVE AND MAY EVENTUALLY CROWD OUT OTHER SPECIES. 2•- FOR PROPAGATION TECHNIQUES, TRANSPLANT NURSERY -GROWN STOCK "WEDG -LOK' TYRE TO ESTABLISH WETLAND VEGETATION. RUBBER COATED STEEL 2. THE SOIL SUBSTRATE SHALL BE SOFT ENOUGH TO PERMIT EASY STEPS OR APPROVED ZA_/�t. MIN OF THE PLANTS. IF THE BASIN SOIL IS COMPACTED OR EQUAL CAST IN PLACE VEGETATION HAS FORMED A DENSE ROOT MAT, THE UPPER 6 INCHES OF PRECAST REINFORCED SOIL SHALL BE DISKED BEFORE PLANTING. IF SOIL IS IMPORTED, IT CONCRETE SECTIONS 1 MIN SHALL BE LAID AT LEAST 4 INCHES DEEP TO PROVIDE SUFFICIENT TOP OF RETAINING WALL "O' RiNG SEALS 16' MAX DEPTH FOR PLANT ROOTING. iuIINIMUM ELEVATION 3. MOST EMERGENT PLANTS MAY BE PLANTED IN FLOODED OR DRY RISER #4 BARS (TYP) DIFFERENCE ACROSS M.H. 5' 4• -O` CONDITIONS. IF PLANTING IS DONE IN DRY CONDITIONS, THEN FIRM INLET TO OUTLET _ CONTRACTOR SHALL SLOWLY FLOOD THE WETLAND AREA IMMEDIATELY 1/2"R SLOPE TO DRAIN SHALL BE 0.20 FEET. FOLLOWING INSTALLATION. THE ROOTS SHALL BE KEPT MOIST TO PRIVATE WALK DEPTH OF FLOW WNCRETE VAidES PREVENT DAMAGE. PLANTS RECEIVED FROM THE NURSERY SHALL BE IN -11- �`' e'• - OR LANDING FILLETS CHANNEL TO BE PEAT POTS OR BARE - ROOTED. BARE - ROOTED PLANTS SHALL HAVE 1 /2" THROUGH IL, SOME FORM OF PROTECTION TO KEEP THE ROOTS MOiST AND MAY BE #4 BARS EQUALLY SPACED ��• 3f4 DIAMETER , 1' -0 "OC MAX SPACING ^ •: - 'r JOINT C{�,I�pIJ, - - ._... • KEPT FOR SEVERAL DAYS, BUT OUT OF DIRECT SUNLIGHT; THOUGH ALL V lb SEMR LJ NURSERY STOCK SHALL BE PLANTED AS 50014 AS POSSIBLE, AND SIDE ELEVATION a A FILLETED INVERT A 5M400 r - REPLACED, IF THE PLANT DIES. A MINIMUM SUCCESS RATE OF 757, OF 1 -G TRANSITION OF FLOW BETWEEN OUTLET PIPE SHALL BE 94 ET do THE PLANTINGS SHALL BE ACHIEVED. 4' -0» -I -I 9 "SIDE RETAINING WALL 9 "SIDE RETAINING WALLI- 7" STEPS ELEVATION OF SIDEWA FRONT ELEVATION CONCRETE STEPS AND WALLS DETAILS SCALE: N. T.S. E>�tiaEO #+iIM. 6' BEi�ING 4. PERMANENT SEEDING (VESCH SPEC. 3.32) SHALL BE PROHIBITED, AS NOTE : 1 mer ME THE GRASSES WILL INDEFINITELY COMPETE WITH THE WETLAND PLANTS. a PAYEAl7/F Ta 10F 1. BEDDING THICKNESS REQUIREMENT SHOO TOE OF ILL CRy lMliErURJN LIlE t ; T1 .SHML R LIFE . - � MANHOLES SHALL HAVE I A _�.�91M OF PAYEMEM ILA I (K4° rRJNIE1.lME'6 cklrfER LINED y(;v�g,r, I (111111 TTPE ISELECF ANTENAL) I! fl7M tF PAVE1E7it INSIDE AND CUT. L sOF IE TRENCH PLACENM FILL � TOE � Fu. •.-- FAIImw =wmz lA INS LEAST TWICE A YEAR IN THE FIRST THREE YEARS AFTER CONSTRUCTION, TYPICAL MANHOLE SECTION 0 0•o O o o. o. ga °a�a --g' -" T NATHO L TYPEIQRI :. M7 AO(1t "M " A20RE111017E PI. VEW OF CD-2 OR C01195111M •••• li1189 IIEEIMO !B ORADATgN REgtttii1a1T8•. VEGETATIVE ESTABLISHMENT. INSPECTORS SHALL DOCUMENT PLANT SPECIES DISTRIBUTION c€oTEZaE *-0" °F"A�cA°E NON-PERFORATEO OUTLET PIPE OR °�" smER m ��-- la���� � :asxr•;:�al TM DF PIPE NTS Sam WLL. Pw [XIS V 9 Aal: /'-P*MAWr SVWAX i. aroma MOTH WILL PE 79 PS MM I I 70 MM1i 0 0 O +! -see" OR cnm Srisum sm"I E nf•��1F.0'T TYPEltC1 i:i! $ 4 A:EIE11T At I.�If aGa ®l M NjLL TIEQENW ON}- EgEB A57 �" lr;AB�YIBE iM�ED p1054 11IET♦t0 fa OWDATICW REOIARDtaR6 *1INTESlFIf AODOt10M0 TO AS111 D-24V AT 5k11YLECY0L F 1'•0• GENERAL NOTES t./ \ L IMTX ARME4ATQ AND nwoewr Ww TAM TO APPROMISL 9LItB� P/OfEAlNT - 2 OitiLET P!E SFIAII. tE0/i AY TIE EOfE OP TIE TAAlIE1. LAE PAYEIlNT AID � @PE � t7i A til/� PIWALIi1; TO T!E Sia!!>ER l4OPE 2 k 10L t; CD- P 3. at CEMTS AW 61IT7ER �cr�, w*w R 6 APO®:E TO tI1FEA 'E" PRONE Utio l$,7FEY ARE TO 9E LOPAm SO TO tAifat ICI UK) Mw OF � BW MATES-1. TYPE Y SOE AI¢ 28 Cr 1�LC01110 �- ON 9lPER0:EYAIFD lECTgil TR TO BE tWO DM PNOW(F MIEA .IB 111114 Ot1TI,LT MM Ott Low 5. M I EItVATION AT *"END W OUTLET PPE TO EE A iMCIN OF T-W ACDYE OF. 1 M1 AT 1IYE7Tr ELEVATM OF REiENrW TMMW�,OTQi 4R SfN&TUIE: ORDW IL ek WWffWs ''MWi,�it'tE WW PPE ARE 'M 7. OLYW IMP![ TO ff iEC MY COMEM TO M-IM atm DROW STANDARD COMBNATWIN UNDERDRANIi (AT GRADIE SAGS AND BRIDM APPR DACHES) ISM 701 WIM 0GkW1MW OF TRMIMORTATfaM �w FRAME do COVER LANDSCAPING NOTES FOR ENHANCED EXTENDED DETENTION FACILITY: (SEE F1Q S- i -D,E) 1. ONLY ONE -HALF OF THE LOW- AND -HIGH MARSH DEPTH ZONES STREET SURFACE OR SHALL BE PLANTED. AT LEAST 5 TO 7 EMERGENT WETLAND SPECIES, 9 "SIDE RETAINING WALL I- 4' -0" - 9 "SIDE RETAINING WALL NON PAVED AREA INCLUDING A MINIMUM OF TWO SPECIES FOR EACH OF THE MARSH 11" STEPS 1 PLAN PRIVATE WALK OR LANDING 2' -0 "MIN 1 /2 "THROUGH JOINT 1 _ -- _ ' rte'-•- -L�i•� SLOPED AREA DEPTH ZONES (HIGH AND LOW), SHALL BE USED. CERTAIN SPECIES, INCLUDING CATTAILS, SHALL NOT BE SELECTED BECAUSE THOUGH THEY Q �•• AJAX MAY PROVIDE EXCELLENT POLLUTANT REMOVAL CHARACTERISTICS, THEY CAN BE INVASIVE AND MAY EVENTUALLY CROWD OUT OTHER SPECIES. 2•- FOR PROPAGATION TECHNIQUES, TRANSPLANT NURSERY -GROWN STOCK "WEDG -LOK' TYRE TO ESTABLISH WETLAND VEGETATION. RUBBER COATED STEEL 2. THE SOIL SUBSTRATE SHALL BE SOFT ENOUGH TO PERMIT EASY STEPS OR APPROVED ZA_/�t. MIN OF THE PLANTS. IF THE BASIN SOIL IS COMPACTED OR EQUAL CAST IN PLACE VEGETATION HAS FORMED A DENSE ROOT MAT, THE UPPER 6 INCHES OF PRECAST REINFORCED SOIL SHALL BE DISKED BEFORE PLANTING. IF SOIL IS IMPORTED, IT CONCRETE SECTIONS 1 MIN SHALL BE LAID AT LEAST 4 INCHES DEEP TO PROVIDE SUFFICIENT TOP OF RETAINING WALL "O' RiNG SEALS 16' MAX DEPTH FOR PLANT ROOTING. iuIINIMUM ELEVATION 3. MOST EMERGENT PLANTS MAY BE PLANTED IN FLOODED OR DRY RISER #4 BARS (TYP) DIFFERENCE ACROSS M.H. 5' 4• -O` CONDITIONS. IF PLANTING IS DONE IN DRY CONDITIONS, THEN FIRM INLET TO OUTLET _ CONTRACTOR SHALL SLOWLY FLOOD THE WETLAND AREA IMMEDIATELY 1/2"R SLOPE TO DRAIN SHALL BE 0.20 FEET. FOLLOWING INSTALLATION. THE ROOTS SHALL BE KEPT MOIST TO PRIVATE WALK DEPTH OF FLOW WNCRETE VAidES PREVENT DAMAGE. PLANTS RECEIVED FROM THE NURSERY SHALL BE IN -11- �`' e'• - OR LANDING FILLETS CHANNEL TO BE PEAT POTS OR BARE - ROOTED. BARE - ROOTED PLANTS SHALL HAVE 1 /2" THROUGH IL, SOME FORM OF PROTECTION TO KEEP THE ROOTS MOiST AND MAY BE #4 BARS EQUALLY SPACED ��• 3f4 DIAMETER , 1' -0 "OC MAX SPACING ^ •: - 'r JOINT C{�,I�pIJ, - - ._... • KEPT FOR SEVERAL DAYS, BUT OUT OF DIRECT SUNLIGHT; THOUGH ALL V lb SEMR LJ NURSERY STOCK SHALL BE PLANTED AS 50014 AS POSSIBLE, AND SIDE ELEVATION a A FILLETED INVERT A 5M400 r - REPLACED, IF THE PLANT DIES. A MINIMUM SUCCESS RATE OF 757, OF 1 -G TRANSITION OF FLOW BETWEEN OUTLET PIPE SHALL BE 94 ET do THE PLANTINGS SHALL BE ACHIEVED. 4' -0» -I -I 9 "SIDE RETAINING WALL 9 "SIDE RETAINING WALLI- 7" STEPS ELEVATION OF SIDEWA FRONT ELEVATION CONCRETE STEPS AND WALLS DETAILS SCALE: N. T.S. E>�tiaEO #+iIM. 6' BEi�ING 4. PERMANENT SEEDING (VESCH SPEC. 3.32) SHALL BE PROHIBITED, AS NOTE : MiJ NO. 66 STONE THE GRASSES WILL INDEFINITELY COMPETE WITH THE WETLAND PLANTS. 5. FOREBAYS SHALL BE INSPECTED AND MAINTAINED REGULARLY TO 1. BEDDING THICKNESS REQUIREMENT SHOO IS MINIMUM AND SHALL BE REMOVE FLOATABLES AND ANY LARGE DEBRIS. SEDIMENT SHALL BE SPECIFICALLY DETERMINED BY THE CONSULTANT FOR THE SOIL CONDITIONS. REMOVED FROM THE FOREBAY EVERY 3 TO 5 YEARS, OR WHEN 6 TO 12 2. THE CONSULTANT WILL OETERVIIINE WETHER MANHOLES SHALL HAVE INCHES HAVE ACCUMULATED, WHICHEVER COMES FIRST. TO CLEAN THE EXTENDED OR NON - EXTENDED BASES. FOREBAY, DRAINING OR PUMPING AND A POSSIBLE TEMPORARY PARTIAL 3. ALL JOINTS, UFT HOLES. INLETS, OUTLETS TIO BE SEALED & GROUTED DRAWDOWN OF THE POOL AREA MAY BE REQUIRED. INSIDE AND CUT. 6. THE CONSTRUCTED STORMWATER WETLAND SHALL BE INSPECTED AT LEAST TWICE A YEAR IN THE FIRST THREE YEARS AFTER CONSTRUCTION, TYPICAL MANHOLE SECTION DURING BOTH THE GROWING AND NON- GROWING SEASONS, FOR SHOWING BRANCH TiE -IN VEGETATIVE ESTABLISHMENT. INSPECTORS SHALL DOCUMENT PLANT SPECIES DISTRIBUTION AND FATALITY RATES AND VERIFY COMPLIANCE ��-- la���� � :asxr•;:�al WITH THE LANDSCAPING SPECIFICATIONS. ALSO, SEDIMENT NTS I�■�- :.a■�+I�� �alnr L" �a��■F25�.�t�if;��;� •.-- 1■f �� � t".aa,"i t�'3°:-7� 1l�'�ti Eat ACCUMULATION, WATER ELEVATIONS, AND THE CONDITION OF THE FIG. S-i -A ] OUTLET SHALL BE DOCUMENTED. RECORDS SHALL BE KEPT TO TRACK �I t] I 1• � - � T THE WETLAND'S HEALTH OVER TIME. SEWER SERV12E LATERAL CONNECTION NOTES > 1. WHERE A %,WrFR SERIACE LAWAAL C0_NKC7S TO A MANIHOLIE AND N0 OVERT SUVA'00N FOR THE S%ftv1 LATERAL tS. f+101CATED . TkE TOQ OWN) ELEVATION THE SMVIC£ LAIMAL -PIPE ,SHALL AT LEAST o:Z' HIGHER ?MAN THE £ROVMWVA'CIQh1 OF THE THE L(MMT PIPE CONNECTED 2 1"OEW R I LATEWS TAPPED INTO AN EXISTING .S ft MArlt SHALL CONNECft' USNNG A "Pf SADDLE AS MANUFACTUUt OY "SEALTT f>Ft 'AIN APPRQYEO ,-EWAL "INiMUM GRADE FOR -SEINER SOMCE C(rW41EGTIt7NN SMALL UE 2X (1/4° PER• :FOOT ) CALL SEWER L 1TSIALS $HALL HAVE A MiNIMLIM Z' IMIiIN DIAMETER OF e, S.A" SEWER LATt'z A S $HALL HAVE A MINIMUM COVER OF 3 FEET;_ FINJ$HED GROUND A.-..r PLUG- ENI QF "---P L TYPICAL SEWER SERVICE LATERAL C.ONNeCTION' N,T.S. FIG, S -2 O O O W +"1 1-1 l 1-1 ri Q ^ to O N M M O m Fill 1 d- EvzzE.:��� 0tiIE'21.1�_M uliw �LTSE�It3:tMiE i t iEv-�wli mow- ��-- la���� � :asxr•;:�al s�� AMM WAL. '�AKx s ;"Lll :wra:,�>tr � rI■ I�,�:•,r,�IE-a: ^� ■r���■1 >� t ;x:,tial�r-r'a �r _�i�`�7I�",€'IiE�'"i,l•�"s7�s7 !' }�}Iti� �,��� ^� �''1R- 72�R.�vi� E�- ��'•}7� �)Cy,r +r'�i ter"='' I�■�- :.a■�+I�� �alnr L" �a��■F25�.�t�if;��;� •.-- 1■f �� � t".aa,"i t�'3°:-7� 1l�'�ti Eat 7 12 ] sae. r� �I t] I 1• � - � T N W�\ CL � Ct t./ \ O O O W +"1 1-1 l 1-1 ri Q ^ to O N M M O m d- !Z L z 7 12 1 T N W�\ CL � Ct t./ \ �O WQ �w W U ) i� Z a 1 Q F-1 C� = Z ° W a J C/, FBI I- o W L U o L9 Q � o r ` ' o '' O 3 N C � O ` x w Lu 0 i W J H x a � I 0 o� T 1 E o W 0 Wz � w n Z W.0 o O L W U hhF+++�MMI J O J 0 O w U o ° 0 w T � o � O in U � X O U 4 L �n �c C o Lu o U }- a W lJ l E n :3 CL Tn 0 JOB NO. 092028 0 u > SCALE ° N/A � U SHEET NO. a o Short Version BMP Computations For Worksheets 2 - 6 Albemarle County Water Protection Ordinance: Modred Simple Method Plan: Treesdale & Stonewater Water Resources Area: Development Area Preparer: FGK PE Date: 15- Mar -10 Project Drainage Area Designation DA# 1A, 2 & 3 L storm pollutant export in pounds, L = [P(Pt7Rv /12 J [ C(A)2.72 ] Rv mean runoff coefficient, Rv= 0.05 + 0.009(1) Pj small storm correction factor, 0.9 1 percent imperviousness P annual precipitation, 43" in Albemarle A project area in acres in subject drainage areas C pollutant concentration, mg/l or ppm target phosphorus f factor applied to RR v required treatment volume in cy, 0.5" over imperv. area = A(1)43560(0.5/12)/27 Table 14: Detention Compliance table •f V....- G- 4. DETENTION COMPLIANCE - For Ultimate Design 2 year _ re-development Area ost- development project area (acres) D.A. #1A Length 5.55 subtotal 2.28 Umits ol'disturbance inTneesdale area detained (acres) Width 14.49 151200 From Stonewater, Treesdale, and Stonehenge Development (D.A.'s #1A, 2 & 3) percent capture 261% N (should be between 80% and 120%) z z d' M � L v C D.A. #2 Length Width no. subtotal (Ex Stonehenge) - 33200_ E� Z � .E W D.A. #3 � as t 101800 V 1 �C: Z Gravel areas Area �r� $ R 80 remarks Area o v x 0.70 = a o. v io Detained Areas Area no. subtotal Grass Area 14.49ac.- 33,200s 5979751x0,08= 47838 Grass Treesdale=1.20ac. & Stonewater--5.20ac) _ 278775 x 0.08 = 22302 Area flowing to Basin (Post D.A.#1A) 5.40 5.99 8.67 - 5.71 Routed via Enhanced Extended Detention Facility Stonehenge- Qifsite (Post D.A42) 2.28 226 2.28 - Routed via Enhanced Extended Detention Facility Treesdale (Post D.A.#3) 3.54 3.93 3.54 - Routed via Enhanced Extended Detention Facility UnDetained Areas 5.10 3.54 - Routed via Enhanced Extended Detention Facility UnDetained Areas Area flowing to stream (Post D.A. #1 B) 4.42 4.91 1 1.15 1 2.69 1 - Unrouted General construction notes for Stormwater Management plans 1. All dams and constructed fill to be within 95% of maximum dry density and 2% of ' POST- DEVELOPMENT DRAINAGE O.h'� optimum moisture content. All fill material to be approved by a geotechnical / (CALCULATIONS FROM APPROVED STONEWATER DEVELOPMENT) engineer. A geotechnical engineer is to be present during construction of dams. 2. Pipe and riser joints are to be watertight within stormwater management facilities. SC O T R. COLLINSZ 1 D.A. #1A ONSITE.• Q 3. For temporary sediment traps or basins which are to be converted to permanent \ \ I 8.67 ac. U Lie. No. 035791 stormwater management facilities; conversion is not to take place until the site is �, \ \ \ * *Cw= 0.54 �� ,r f/7 bo stabilized, and permission has been obtained from the County erosion control \\ \ \ 1 Tc= 13 min. inspector. �1 \ �\ \` DRAINAGE SHALL BE ROUTED THROUGH THE BASIN S-tONAL E� 2 YEAR Q 1732 cfs \ 10 YEAR Q = 22.47 cis 3\ 100 YEAR Q = 36.87 cfs 1 \ I \ \ \\ D.A. #1B ONS17-E (NOT ROUTED). ac. (COLLECTIVE DISTURBED AREA NOT DETAINED) Cw= 0.45 (UNIFORMLY THROUGHOUT) R/oRR regmalvaleffcency ,LRR1t00/L(post)e) 1�i.o9 > 8.40v � \ / M I \ Tc =Smin. Impervious Cover Computation (values in feet &square feet Table 14: Detention Compliance table 10 Year Event ( I \ \ \ \ Item _ re-development Area ost- development Area D.A. #1A Length Width subtotal 2.28 D.A. #1A Length Width subtotal 151200 From Stonewater, Treesdale, and Stonehenge Deveiopment (D.A.'s #1A, 2 & 3) percent capture 261% N (should be between 80% and 120 %) z z d' M o C D.A. #2 Length Width no. subtotal (Ex Stonehenge) - 33200_ D.A. #2 (Ex Stonehenge) 33200 W D.A. #3 � D.A. #3 101800 V 1 �C: Z Gravel areas Area �r� � x 0.70 = W Area x 0.70 = @ Structures Area no. subtotal _ Area no. subtotal Grass Area 14.49ac.- 33,200s 5979751x0,08= 47838 Grass Treesdale=1.20ac. & Stonewater--5.20ac) _ 278775 x 0.08 = 22302 Active crop land yA- rea --�_ O Area --- 1x0.25 =- Other Impervious Areas - - s= Area flowing to Basin (Post D.A.#1A) 5.40 DETENTION COIVPUANCE - For Ultimate Design 10 year Drainaa a Area I Acres Cw project area (acres) 8.67 5.55 2 2.28 Limits of disturbance inTreesdale area detained (acres) 3.54 14.49 From Stonewater, Treesdale, and Stonehenge Deveiopment (D.A.'s #1A, 2 & 3) percent capture 261% N (should be between 80% and 120 %) z z d' M o C .Y E W CL O v Y ai •� C W N rn � mt L � V 1 �C: Z � N W @ g remarks o W O Detained Areas O s= Area flowing to Basin (Post D.A.#1A) 5.40 7.78 1 8.67 1 12.93 Routed via Enhanced Extended Detention Facility Stonehenge - Mite (Post D.A.#2) 2.28 3.01 2.28 - Routed via Enhanced Extended Detention Facility Treesdale (Post D.A.#3) 3.54 5.10 3.54 - Routed via Enhanced Extended Detention Facility UnDetained Areas Z Z Z U 3 x U Area flowing to stream (Post D.A. #1 B) 4.42 6.36 ,� 1.15 1 3.47 1 - JUnrouted \ \ 1 \ 2 YEAR Q =2.69 cfs �\ \ 10 YEAR Q =3.47 cfs �\ 100YE4RQ =5.69 cfs ' \ D.A. #2 STONEHENGE (OFFSITE): \ \ I \ 2.28 ac. Cw= 0.45 Tc= 16 min. \ \ % ( Y'" DRAINAGE ROUTED WITH D.A. #1A THROUGH THE BASIN s I / TRR�SDALE DEVELOP ENT o � \ \ / , / / � � D.A. #3 TREESDALE : . / Z , u l \ 3.54 ac. (D.A 3)I I I * * *Cw= 0°69 Tc= 13 min. / DRAINAGE ROUTED WITH D.A. #1A THROUGH THE BASIN Pre -Dev. > Post -Dev. 16.40 22.25 , \ 1 COMPOSITE C VALUE WAS DETERMINED FROM THE FOLLOWING: ADDITIONAL DRAINAGE AREA FLOWING TO STREAM / \�, °`E .: / , °'\ �� � ,\ I a��ePry TOTAL ACREAGE: 8.67ACRES (NOT PART OF ENHANCED EXTENDED DETENTION FACILITY WATER 1.48ac. OF PROPOSED ROADWAY& SIDEWALKS AT C =0.90 QUALITY OR MENTION CALCULATIONS) 68,000 IMPERVIOUS AREA FROM 34 Q DET LOTS (2,000 SF /LOT) AT C =0.90 18,760 IMPERVIOUS AREA FROM TH UNITS AT C =0.90 Post Development D.A. to SW_ M Facility Drainaa a Area I Acres Cw 1A 8.67 0.54 2 2.28 0.45 1- 3 3.54 0.69 e _ / � / / / // /// �nCP� ._-- - `` \ v... - :.:- _� •• -•� S_ \ \ "`r: /. 400 `_ �� \ \ �\ \ \ -_'- - ., J- i µ , 1 , iTS FL,06DPLAUV / �i/i i' / /// - . -._._ -- \ \ � .\ \ \ ° \ • � •-/ �-\-' � � / - { _ .. _ _ - � / i 1 / it ' [P�ST_�EV€LOP Y ­7 NSiTE DISUf - ' T7 I i ; ✓ , / / Pk //i / /,- - \ \ �\ \ \ \\ i ,'" / i \ ` ' / / / fl / " J DR�4III�ING-TT TFff QP 5 SE / //x / i /z'//' i / // \ \ \ \ \� 'S / DoT 2-5- -- / I, E�CTENI�FJSDETENTIONI F \ J T / z .:..: a-�,� :v.: = C:w-, � , , �_ ,... .� ,�/ / / lk 1 ✓ /' i/ �9 \% \ \ \/ \ \ V\ \ / / 1 / r ��� I/ �J 47 Lo�1f -\ \ \ \� °\\ k \ Q \o\ \/\ I/ I / I \\ �' / k - I / I / '• y I \\i\ \i o 21 I I1 I( �\J 3 / I I / X �'I'_ ' / / I I <; / \ \l�� \ / I i ILOT24 ' / \ I I / I \ \� \ \ \ \� \ /\ \\ \ \I II �! i i ! 1 L T 231 I I I / )I 1 1 / /{ / /I / JI / _ _ _I- o y �i� // 'y. 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I II IILN2 I II II 1 I I 1 T $ /l I I I I I I �I �I I I III I 1 ! I /I I I 1 I 1 \► I � 1I 1 \ `I � LbIT 3 %O OT LOT 6 L� 5 II LOT 4 0/111111 11 I I I I I 1I I I I I� i 131 I i I :'1 l l> I1I► 11111 �/ // / / �o y { o� °lilllllit�l,ll� I I I / � I o o STONEHENGE POST - DEVELOPMENT AREA DRAINING TO THE PROPOSED o ENHANCED EX T ENDED DETENTION FACILITY ( ASSUMED 33,200 sf OF IMPERVIOUS AREA) D.A. #2 I g PROPERTY LINE DIVIDES STONEHENGE DEVELOPMENT FROM THE PROPOSED DEVELOP ENT WITH THIS SET OF PLANS` POST- DEVELOPMENT AREA DRAINING TO THE PROPOSED ENHANCED EXTENDED DETENTION FACILITY (D.A #1A) I , I , TEMPORARY BENCHMARK RR SPIKE SQtKPOW BENCHMARK OF UTILITY P p� ET IN BASE ELEVATION " U ,POLE �fUH77 ELEVATION 48J.25' / 4�I I( . D RBED POST- DEVELOPMENT AREA NOT G/ E PROPOSED ENHANCED EXTENDED T TON FACILITY (PART OF D.A #113) / 60 O 60 120 FEET 1 SCALE: 1"=60' LU o 0 0 0 � L9 (311\ m N Z z z d' M o z t T � N rn � L � V 1 Z � N W o W O z� O s= MENEM O o a W LL Q o Z Q= AfF F- Z Z Z U 3 x U W W� � 0 a� ,� O O O t < o w � � � W ��r /• V1 W 0 6 T L � C� (!') Z Lil W Z O Z w C/) Z J W J o w w <��� °1 WT 0z 0 0 0 W 00 U x' a> Q) . m m m t- i- ff ph Z ¢ ¢ ¢ CL U) ' . tj \3 -07 -2b l IG11RE 3.01 - 2b EnhunerdETiCRded- bdentlon I40ZR :- Seetioer MA-Stage SII 6dsNrg Ground Sedimerd Fo `` -- w /*Hared wertlo to Mort Targa Phuspborus Removal- Efficleine Md H' M04 Pod 382.00 1052.00 (30 hr. Dtawdown of 2 x WQ 35°,�a° 22 - 3 ?"+ r*WW ewllmon wsF NIs 3' aho�e Wlal Sh" lox 159.1 385.00 10125.00 EEnhimirad eldeJaded- dete�on Fin Aquatic Extended anon ec (iyp) Control (muted F4 MOM Drd" w /cot. vak. Ptlncipot spilw" TABLE '3.0-7 -1 Peffl awe Removal Effidendw,c far Ernjlyd Daehtion & nhamcedBwended- Dcrengion- Barshu Type Targa Phuspborus Removal- Efficleine I>+tlperr iwws Cover 1xtended-deterttidn 0.0 382.00 1052.00 (30 hr. Dtawdown of 2 x WQ 35°,�a° 22 - 3 ?"+ volume) 159.1 385.00 10125.00 EEnhimirad eldeJaded- dete�on 385.50 10743.00 605.0 (34 -hr. DM duv tt of 1 x l 'Q; SU° o. 33 - 66.,. Volmnc, and I x V4Q Valu nc 388.00 14483.00 1789.7 tiltallntir h�lam 2348.4 390.00 16923.00 3.fifi - 4 11GURE 3.07 22 Enkatncert.Exlendedd Deresdion Basin - Plan .- Pond Suffer - '� 11om Beach W w f _ Vegetated Emergency Ln Spllwoy Er km COTW) ost w l Defer ron P Sedlmerd II SiaWkWd OrwNwow I I 1 SedmeM T/ Elm 1 •/Stale r _ __ `_ ti .. J Ern6snWnent )� � , � � 1 roast Extended 11e6ai�lian / vahicte Control Structure r' Access -PtinG &if€er -'` (11nverw Pipe) f V-07-11 3.4',' - 4 ENHANCED EXTENDED DETENTION ROUTING CALCULATIONS INPUT DATA INFLOW HYDROGRAPHS INPUT: 3 Inflow Hydrogrophs Hydrograph 0 Basin: Stonewater & Treesdale Enhanced Extended Detention Facility Modified - Rational name: 2 -Year Critical, Modified Rational Method 12 Contour Areas 0.560 Elevation(ft) Area(sf) Computed Vol.(cy) 381.50 707.00 0.0 382.00 1052.00 16.2 383.00 1448.00 62.3 384.00 3990.00 159.1 385.00 10125.00 411.8 385.50 10743.00 605.0 386.00 11812.00 813.8 387.00 13215.00 1277.0 388.00 14483.00 1789.7 389.00 15690.00 2348.4 390.00 16923.00 2952.2 391.00 18178.00 3602.0 Start -Elevation(ft) 385.50 Vol.(cy) 605.02 5 Outlet Structures Hydrograph 1 Outlet structure 0 Modified - Rational Orifice name: 10 -Year name: Inverted Pipe Method area (sf) 0.049 C diameter or depth (in) 3.000 Area (acres) width for rect. (in) 0.000 IDF file: o10 coefficient 0.600 time of concentration (min) invert (ft) 385.500 receding factor multiple 1 time increment discharge out of riser time limit (min) Outlet structure 1 fudge factor Orifice storm: crit. name: Three Orifices volume (cy) area (sf) 0.442 peak flow (cfs) diameter or depth (in) 9.000 intensity (in /hr) width for rect. (in) 0.000 time to peak (min) coefficient 0.600 duration of peak (min) invert (ft) 387.200 routed multiple 3 Hydrograph 2 discharge into riser Modified-Rational Outlet structure 2 name: 100 Weir Method name: Multi -Stage Riser C diameter (in) 30.000 Area (acres) side angle 0.000 OF file: a100 coefficient 3.300 time of concentration (min) invert (ft) 388.500 receding factor multiple 1 time increment discharge into riser time limit (min) transition at (ft) 0.912 fudge factor orifice coef. 0.600 storm: crit. orifice area 1 4.909 volume (cy) Outlet structure 3 peak flow (cfs) Weir intensity (in /hr) name: Emergency Spillway time to peak (min) length IN 10.000 duration of peak (min) side angle 78.690 routed coefficient 3.300 OUTPUT invert (ft) 390.000 JW multiple 1 discharge through dam EXTENDED DETEN TION AT ELEV. = 387.20 Outlet structure 4 O Culvert name: Barrel multiple 1 discharge out of riser w J D (in) 18.000 UF- h (in) 0.000 AT ELEV. = 385.5. 3" PIPE SIZED FOR MIN. Length (ft) 50.000 w Slope 0.020 a°C. Manning's n 0.013 Inlet coeff. Ke 0.500 Equation constant set 3 Invert (ft) 380.000 NOTE• C 0.560 Area (acres) 14.490 IDF file: a2 89.00 (min) time of concentration (min) 16.00 receding factor 1.670 time increment 1.00 time limit (min) 200.00 fudge factor 1.00 storm: Grit. duration (202 iterations) volume (cy) 1866.07 peak flow (cfs) 10.069 ir" -msity (in /hr) 1.241 the to peak (min) 16.000 duration of peak (min) 62.04 routed true Hydrograph 1 Routing Summary of Peaks: 100 -Year Modified - Rational inflow (cfs) name: 10 -Year Critical, Modified Rational Method 27.202 at C 0.560 Area (acres) 14.490 IDF file: o10 2763.911 time of concentration (min) 16.00 receding factor 1.670 time increment 1.00 time limit (min) 200.00 fudge factor 1.00 storm: crit. duration (376 iterations) volume (cy) 2453.57 peak flow (cfs) 17.982 intensity (in /hr) 2.216 time to peak (min) 16.000 duration of peak (min) 40.04 routed true. Hydrograph 2 84 Modified-Rational 126 name: 100 -Year Critical, Modified Rational Method W C 0.560 Area (acres) 14.490 OF file: a100 LnW,�,/ W time of concentration (min) 16.00 receding factor 1.670 time increment 1.00 time limit (min) 200.00 fudge factor 1.25 storm: crit. duration (226 iterations) volume (cy) 3918.78 peak flow (cfs) 38.843 intensity (in /hr) 3.829 time to peak (min) 16.000 duration of peak (min) 24.04 routed true OUTPUT FOR CRITICAL DURA77ONS RELATED TO THE SWM FACILITY, PLEASE SEE 77-IE ROU77NG CALCULATIONS WITH THE SUBMITTAL PACKAGE, OR ABOVE. FOR A SUMMARY OF THE ROU77NG CALCULA77ONS CORRESPONDING TO THE PEAK STORM VOLUMES AND OUTFLOWS, PLEASE SEE 77-IE ROUTING CALCULATIONS, OR ABOVE. THE 30 HOUR DRAWDOWN CALCULA77ONS WERE DESIGNED BASED OFF 2XWQV. SEE SUBMITTAL PACKAGE FOR DETAILS OUTPUT: Routing Method: storage - indication Hydrograph 0 Routing Summary of Peaks: 2 -Year Critical, Modified Rational Method inflow (cfs) 10.072 at 16.00 (min) discharge (cfs) 5.707 at 89.00 (min) water level (ft) 388.375 at 89.00 (min) storage (cy) 1994.235 3311J2, Hydrogroph 1 72 37 1i, Routing Summary of Peaks: 10 -Year Critical, Modified Rational Method inflow (cfs) 17.990 at 16.00 (min) discharge (cfs) 12.932 at 63.00 (min) water level 11 388.864 at 63.00 (min) storage (cy) 2269.705 42 Hydrograph 2 ?2 es Routing Summary of Peaks: 100 -Year Critical, Modified Rational Method inflow (cfs) 38.862 at 16.00 (min) discharge (cfs) 27.202 at 48.00 (min) water level (ift) 389.696 at 48.00 (min) storage �(cy) 2763.911 4119 7G o1 Swka Arses tomarsh 35 �i Morah 45% x,rt:KK 3.o� -3x Track and Debris Rack ConfegmW ons far Extended - Detention Control Structures I I 1 I i ourLIJ SCREW CAP 77-1 RISER FOOTING \3-07-3a tr GONCREIE TOP w/ WADE ACCESS COYER V11111 . REWMING BAR W" Rreat STEEL OR C�I�iOW com POSTS RECTANIH LM MULTI -SUGt RISER 1 2 -YR COWROL 11EIR/OREIOE EXTEW BEF99M N.S.E. CAP PM SFWIAN MUSH NSE °a PM PPE _ r v SOLID PH 2,_4. so' F1.BON 1 }' T I f� } AA A I if 1 t N �A 5 t I � ��il y '. u.._1- A I fT y !F 1 jt LIT � � P •vent RNM 46 WON a d. aazt ir, i PAl Vbw I�li'mrieN {� 1:Q. Not* 171etrtwrw I I ) EMERGENCY SPILL WA Y Abbreviation Dirif *ns� 24 30 1 48 W: 34 ,. 77 3311J2, 50 72 37 1i, ._ 2,216 30 37 1 do 72 w. +14 126 36 44 60 72 49 2.i2 42 61 ?2 es M 8.16 40 SO 04 100 02 4.27 54...65113 P!recM./Iknt- ViDi1t11K Dovba Map and Rlaer) 84 104 M';; 4119 N 32 EM Fi14 'M 5148 at ao t1$ 96 t14 34tJ2 5,29 72 811; 111& 1313 dt5 8.•93 it 9411m 12S l4r 986 11.89' 84 194 126 117 tP4 � x,rt:KK 3.o� -3x Track and Debris Rack ConfegmW ons far Extended - Detention Control Structures I I 1 I i ourLIJ SCREW CAP 77-1 RISER FOOTING \3-07-3a tr GONCREIE TOP w/ WADE ACCESS COYER V11111 . REWMING BAR W" Rreat STEEL OR C�I�iOW com POSTS RECTANIH LM MULTI -SUGt RISER 1 2 -YR COWROL 11EIR/OREIOE EXTEW BEF99M N.S.E. CAP PM SFWIAN MUSH NSE °a PM PPE _ r v SOLID PH 2,_4. so' F1.BON 1 }' T I f� } AA A I if 1 t N �A 5 t I � ��il y '. u.._1- A I fT y !F 1 jt LIT � � P •vent RNM 46 WON a d. aazt ir, i PAl Vbw I�li'mrieN {� 1:Q. Not* 171etrtwrw I I ) I • u �i tt •'I j i ♦ • L ,j11j � • FM � aril sad 1',,r•, �'.I'. '-i,'•.#�'•�'.''.�,� , '. , �li� . -. � �►/ :. : : : : : :. .;.� �� III' III 1 -�' � •� : :. :.� �-������ � :: , �► III •�• �I �� �: = _� hoar �+ = .r;:�.,rts�xt+r� ::. I, I PIPE RPMP MICRO POOL SECTION 107-8 STONE CHECK LAW BM 1 * to 3' STONE Do PoPRAP EMERGENCY SPILL WA Y Abbreviation Size /Planting CREST ELEVATION= 390.00 /q;M✓raaax lRiteer r D. v7 x ,a. Z o AN77- VORTEX TRASHRACK dieaaoe 0w*d ) Mt.xd•t9 FU W w mnrdanm IoM AlE'1611 UM ELEV.= 391.00 CLj oWwe nne wrut4 W two "wdafts d AWW CM 10 YEAR NOTCH DIA. =41" & HT. =24" 1dj Her �e� � tmt9v+�n derMOe 1;6: end tiler 4111,1 F• •eq®•r ROCK WEIR TOP lewati rHArpt aPLi• Ana >nt�ar 1.6:t DESIGN OF MULTI -STAGE R.1 1#a4 rwird•reainb+�lr to rrre A9T141 AI9161!�! R A rr E W. 100 YEAR Chumftfwmai T•MDmaerrnwttr Ea14, % l Q 0AW 18" o.c. 2 xG V0A x MS WUF x*ftnm. QA X. EMBANKMENT HT. =9' 1 r' L4A0 111411 ;, z 68.900 P+LI. aamtmebb MARSH POOL SURFACE) �owertauerdr ,mel�aster.Ilrkwewararrr�te� neltt'OnCeennHrl --------------- 4ccstt� =i£', Lnl.aa na�ewd. M�trsrrlareAl�Bi1GE TRAPEZOIDAL DITCH: 45.) mi Fmm 8 arato is awakda for 4rl' Lix r[I and iYpar- rolerewrei� HIGH MARSH g - trrrta a�+ea sauna. ,er \ 3:1 SIDE SLOPES EW -1 P!recM./Iknt- ViDi1t11K Dovba Map and Rlaer) WA. 14M Wl" PV I • u �i tt •'I j i ♦ • L ,j11j � • FM � aril sad 1',,r•, �'.I'. '-i,'•.#�'•�'.''.�,� , '. , �li� . -. � �►/ :. : : : : : :. .;.� �� III' III 1 -�' � •� : :. :.� �-������ � :: , �► III •�• �I �� �: = _� hoar �+ = .r;:�.,rts�xt+r� ::. I, I PIPE RPMP MICRO POOL SECTION 107-8 STONE CHECK LAW BM 1 * to 3' STONE Do PoPRAP 0 SC T R. COLLINS,;�o ) Lic. No. 0,35791,2 1k1%1I_0XAL c� /7 !f /O w4 EIOZ MIN. 4 WIDE & 4 DEEP IMPER VIOU 18 CL. Ill RCP EMERGENCY SPILL WA Y Abbreviation Size /Planting CREST ELEVATION= 390.00 V) v7 HANSON CONCRETE Z o AN77- VORTEX TRASHRACK D TH OF TOP OF DAM = 9.5' w I.D. =60 ", o.D. =72 ", ELEV.= 391.00 O 10 YEAR NOTCH DIA. =41" & HT. =24" SEE DETAIL BELOW FOR ROCK WEIR TOP W.S.E.= 388.86 SEE DETAIL ON THIS SHEET. DESIGN OF MULTI -STAGE ELEV.= 387.0 100 YEAR PRINCIPLE SPILL WAY 18" o.c. EXTENDED DE7i:N77ON W.S.E. = 389.70 WSE= 388.50 (MAX. 3' ABOVE QA X. EMBANKMENT HT. =9' O MARSH POOL SURFACE) .�' --------------- - - - - -- - - - - -_- _ ---------- - - - - -- -- TRAPEZOIDAL DITCH: " HIGH MARSH g - 8' BOTTOM WIDTH, 1' DEEP W/ VDOT SID. � \ 3:1 SIDE SLOPES EW -1 - - - - - -- ------ - - - - -- _______ ___________ _ _ ____..____ 20 (L) WITH 2 DEEP VDOT e1i 5:1 SIDE SLOPES PV STD. EC -3, TYPE B RIP -RAP 31 a LINING W/ FILTER FABRIC a 2 YEAR UNDERLAYMENT L9~ LOW MARSH W.S.E.=388.3 _ SEDIMENT FOREBAY W/ � EC -1, CL. II, TYPE ARMORED OVERFLOW Q In EMERGENT & AQUA 77C SHALLOW MARSH DEEP POOL VDOT SID. EW-1 A RIP -RAP LINED VEGETATION WSE= 385.5 cQ G " 0 SC T R. COLLINS,;�o ) Lic. No. 0,35791,2 1k1%1I_0XAL c� /7 !f /O w4 EIOZ MIN. 4 WIDE & 4 DEEP IMPER VIOU 18 CL. Ill RCP Common Name Abbreviation Size /Planting cn V) v7 CORE & CUTOFF TRENCH (TOP ELEV.= 50.00 LF 0 2.0% Z o �WWir w w w 391.00, BOTTOM ELEV= 381.00) WITH INV. IN= 381.00 O z a AC 5 -6' 5 1: 1 SIDE SLOPES INV. OUT= 380.00 ARROWHEAD/DUCK POTATO SL 18" o.c. O O O ENHANCED EXTENDED DETENTION FACILITY N z LEN NA SP. " " " NOT TO SCALE} / SCIPUS PUNGENS � ,, Ma O O z O SPILLWAY CREST HANSON CONCRETE ELEVA 7711 390.00 AN77- VOR7EX 7RASHRACK I.D. =60 " D.D. =72 ", , NOTCH DIA. =41" & HT_ =24" SEE DETAIL ON THIS SHEET. ORIFICE COEFF: =0.60 TRASH RACKS SHALL BE INSTALLED ON ALL ORIFICES PER VSMH TECHNICAL BULLE77N ,f7 STONE CHECK DAM BERM ORIFICE COEFF. =0.60 I (1 -3" STONE OVER RPRAP)�� t,liy' s•sG ntat.�t n� euaeaea rna a/o° (listener 2 i7•` dd. �,aQ Isometric lefe rare fit. O,'i �:e Ldttd t4 sr -s r HOPE etrareRw al plartic wdth 0 a -I/W hales rand i /�' pteta r nu v%i*;r=ad br A wAn f �� Searitew Mm ae equett 0000 Rh[awrn with eptjemei mete 1QQT Intl sear. apebn tiles 1 (• Ibick} }lpPS ftsndnsd aerlo With: Section a- u.,i...n� a li K;&M latburwd ity �c Sointivns TwSe. ar equal 0/d MIL. halo ti r� I eta NW-1 PLASTIC 20 VaChww ilaad BMP DEBRIS CAGE SOLITHONS p,,�,ti VA 04 live_ "o-M- ok WF.Pb Tic- WhS=o� CONC. BASE SHALL BE 18" THICK. 50.00 LF ®2.0% ° BLOCK WIDTH IS 2x RISER INV. IN= 381.00 DIAMETER AS DIMENSIONED. INV. OUT= 380.00 5 x5 x18" CONC. BASE PRINCIPLE SPILLWAY 0 T CAL 1.30' OF (TOP OF DAM= 391.00) FREEBOARD 100 YEAR W.S.E.= 389.70 _- 10 YEAR ____ W. S E. = 388.86 2 YEA R -- - -- - _ - -- -- - -- - - -- - - W. S E. = 388.38 1.0' FOREBAY TOP C l:, 1'"'4 - WID7N= 4.75' t AT AN 2 5, ELEVA 771 387.00 WEIR COEFF: VDOT SID. EC -1 CL. II FOREBAY SPILL WAY RIP-RAP LINED SPILLWAY ELEVATION= 386.00 WITH GEO- TEXI7LE UNDERLA YMEN T FOREBAYSPILLWAYS NOT TO SCALE (TOP OF DAM= 391.00) 100 YEAR W.S.E.= 389.70 W/ 1' min. FREEBOARD ACHIEVED h� 1.0' WEIR COEFF: =3.3J TOP OF DAM WIDTH= 10' 9. AT AN .PAVED WEIR w/ 5:1 SIDE EELEVATION= = 391.00 SLOPES 8c VOOT STD. EC -1, EMERGENCY SPILLWAY CL. ll, TYPE A RIP -RAP CREST ELEVA770N= 390.00 LINED SPILL WA Y CHANNEL w/ GEOTEXPLE FABRIC UNDERLA YMEN T (40'Lx 1 O'Wx2'D) EMERGENCYSPILLWAY NO TO SCALE TOTAL VOLUME OF POND AND FOREBAY Elevation Area of Contour Volume 381.5 707 0 382 1052 437 383 1448 1,682 384 3990 4,296 385 10125 11,119 385.5 10743 16,335 386 11812 21,972 387 13215 34,479 Scientific Name Common Name Abbreviation Size /Planting U U U SWEETBAW MAGNOLIA Z o �WWir PLATANUS ACERIFOLIA LONDON PLANETREE PA TOP OF DAM O z a AC 5 -6' 5 ELEV. = 391. DO ARROWHEAD/DUCK POTATO SL 18" o.c. m m m NL N 210 LEN NA SP. DUCKWEED LS 18" o.c. . - - - PA VED WEIR w/ SCIPUS PUNGENS u z a W a W a W e1i 5:1 SIDE SLOPES PV 5 GAL. 31 a a a 1?' Sc VDOT STD. ' 24 L9~ � EC -1, CL. II, TYPE O Q In N III A RIP -RAP LINED cQ G WI. U SPILLWAY CHANNEL W c' � W UJI `--30" CL. 111 RCP w/ GEO TEX TI LE � LnW,�,/ W W L.L MULTI -STAGE FABRIC UNDERLA YMEN T (•� zz RISER AT ELEV. (40'Lx1 O'Wx2'D) O =388.50 W 3- 9" ORIFICES FOR ADDITIONAL JW EXTENDED DETEN TION AT ELEV. = 387.20 O 00 -3" INVERTED PIPE FOR EXTENDED DETENTION w J UF- ~ AT ELEV. = 385.5. 3" PIPE SIZED FOR MIN. w n w a°C. czn 30 HOUR DRAWDOWN AT 2x WQV 092028 SCALE NOT TO SCALE 18" CL. 111 RCP ¢ o C:) o CD CONC. BASE SHALL BE 18" THICK. 50.00 LF ®2.0% ° BLOCK WIDTH IS 2x RISER INV. IN= 381.00 DIAMETER AS DIMENSIONED. INV. OUT= 380.00 5 x5 x18" CONC. BASE PRINCIPLE SPILLWAY 0 T CAL 1.30' OF (TOP OF DAM= 391.00) FREEBOARD 100 YEAR W.S.E.= 389.70 _- 10 YEAR ____ W. S E. = 388.86 2 YEA R -- - -- - _ - -- -- - -- - - -- - - W. S E. = 388.38 1.0' FOREBAY TOP C l:, 1'"'4 - WID7N= 4.75' t AT AN 2 5, ELEVA 771 387.00 WEIR COEFF: VDOT SID. EC -1 CL. II FOREBAY SPILL WAY RIP-RAP LINED SPILLWAY ELEVATION= 386.00 WITH GEO- TEXI7LE UNDERLA YMEN T FOREBAYSPILLWAYS NOT TO SCALE (TOP OF DAM= 391.00) 100 YEAR W.S.E.= 389.70 W/ 1' min. FREEBOARD ACHIEVED h� 1.0' WEIR COEFF: =3.3J TOP OF DAM WIDTH= 10' 9. AT AN .PAVED WEIR w/ 5:1 SIDE EELEVATION= = 391.00 SLOPES 8c VOOT STD. EC -1, EMERGENCY SPILLWAY CL. ll, TYPE A RIP -RAP CREST ELEVA770N= 390.00 LINED SPILL WA Y CHANNEL w/ GEOTEXPLE FABRIC UNDERLA YMEN T (40'Lx 1 O'Wx2'D) EMERGENCYSPILLWAY NO TO SCALE TOTAL VOLUME OF POND AND FOREBAY Elevation Area of Contour Volume 381.5 707 0 382 1052 437 383 1448 1,682 384 3990 4,296 385 10125 11,119 385.5 10743 16,335 386 11812 21,972 387 13215 34,479 Scientific Name Common Name Abbreviation Size /Planting Quantity Wetland Landscaping MAGNOLIA VIRGINIANA SWEETBAW MAGNOLIA MV 5' -6' 4 PLATANUS ACERIFOLIA LONDON PLANETREE PA 2 1/2" 7 AMALANCHIER CANADENSIS SERVICEBERRY AC 5 -6' 5 SAGGITARIA LATIFOLIA ARROWHEAD/DUCK POTATO SL 18" o.c. 215 NUPHAR LUTEUM SPATTERDOCK NL 18" o.c. 210 LEN NA SP. DUCKWEED LS 18" o.c. 160 SCIPUS PUNGENS COMMON THREE SQUARE SP 5 GAL. 13 PELTANDRA VIRGIN ICA ARROW ARUM PV 5 GAL. 31 ILEX GLABRA'SHAMROCK' SHAMROCK INKBERRY HOLLY IG 5 GAL. 24 s � .1 s. ...< � -tare .� � >�.�• � � \\ Area of / c _F : a . Contour Contour ARA- 707 0 382 552 314 383 698 938 384 3090 2,690 385 9075 8,510 ri 1 11412 . . • �� 9553 13,166 \ 10232 ENHANCED I TEN770N WE7LAND LANDSCAPING LEGEND 0 MAGNOLIA VIRGINIANA (SWEETBAY MAGNOLIA) TREE ABB.: MV PLATANUS ACERIFOLIA (LONDON PLANETREE) ABB.: PA AMALANCHIER CANADENSIS (SEROCEBERRY) TREE ABB.: AC SAGGITARIA LATIFOLIA (ARROWHEAD /DUCK POTATO) ABB.: SL (LOW MARSH PLANT) NUPHAR LUTEUM (SPATTERDOCK) ABB.: NL (LOW MARSH PLANT) LENNA SP. (DUCKWEED) ABB.: L5, (LOW MARSH PLANT) ® SCIPUS PUNGENS (COMMON THREE SQUARE) ABB.: SP (HIGH MARSH SHRUB) 0 PEL TANDRA VIRGINICA (ARROW ARUM) ABB.: PV (HIGH MARSH SHRUB) M SHAMROCK INKBERRY HOLLY (HIGH MARSH SHRUB) ABB: IG POND and OUTFALL POOL Elevation Area of Volume Volume Contour Contour 381.5 707 0 382 552 314 383 698 938 384 3090 2,690 385 9075 8,510 385.5 9553 13,166 386 10232 18,112 387 11575 29,008 387 12766 29,008 FOREBAYS ONLY Elevation Elevation Area of Volume Contour Contour 381.5 382 500 0 383 750 621 384 900 1,445 385 1050 2,419 385.5 1190 2,978 386 1580 3,669 387 1640 5,278 ENHANCED EXTENDED DETENTIQN WQV REQUIREMENTS: Proposed Impervious Area= 275,302 sf Water Quality Volume 11,471 cf 1x1VQV Required Below Inverted Pipe= 11,471 cf WQV Provided at Inverted Pipe= 16335 cf 1xWQV Required Below Orifices= 11,471 cf WQV Provided Orifices (Elev. 387.2)= 21,107 cf OUTFALL POOL ONLY Elevation Area of Volume Contour M 381.5 707 0 382 812 379 383 992 1,280 384 1260 2,403 385 1426 3,745 385.5 1668 4,518 HIGH MARSH VOLUME Elevation Area of Volume Contour 385 4329 0 385.5 9205 3,308 LOW MARSH VOLUME Elevation Area of Volume Contour M 383 1670 0 384 2119 1,890 385 3505 4,673 385.5 3505 6,426 L9 M z M m 1 WtV ° 0. z 0 (VQ II N w J H � W J J Q �.�.■ U - z W L9~ � O Q Z � � z cQ G WI. U W c' w � LnW,�,/ W W L.L zz ~ O W w JW O 00 w J UF- ~ w n w a°C. czn JOB NO. 092028 SCALE NOT TO SCALE SHEET NO. SWM -2 V J J J