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
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De = DEPTH OF EXCAVATION
L = LENGTH OF GEOSYNTHETIC REINFORCEMENT
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TYPICAL METER VAULT
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TD_ ii
8 2' 1' 2
1.33'
SIDE VIEW
Y z•" C7IA.METEn DRILLED
401.1 fca Tour-1-i READ
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3 E
A1WwZ SURF ACE
+11isi FME,ATH
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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.
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LF
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]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.
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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
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JOB NO.
092028
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SCALE
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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 _
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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'
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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
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SHEET NO.
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