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HomeMy WebLinkAboutWPO200900030 Plan - Stormwater Stormwater Management Plan 2010-02-12_ U) 0 m v c�a � Z o 'w o Un cf) ff o 0 Q 8 U Q-) cl� C2 IT Site Data: Revised 90 -Aug -09 W W W C-3 O W w Project: Charlottesville First Church of the Nazarene rn o o M Albemarle County 0 Ln 0 o a o O Z Owner: IE Charlottesville First Church of the Nazarene I 11E 1011 Elliot Ave. j I r Charlottesville, VA 22902-,� FINAL J Contact: Charlottesville First Church of the Nazarene 0s ra VVr1 Attn: Pastor Bill Willis r� 1 (� j�� r7 1011 Elliot Ave. sem. 1 c/ L� V Charlottesville, VA 22902 fv r2 >� rL "r y 434-295-5537 :its GENERAL NOTES �iA Site Tax Map & Parcel: TM 79 Parc. 8A' ,-. z 1. The owner will designate a project manager to act as owner's representative during this project. Acreage: 6.77 Acres (Per Recent survey) y-, ^¢ ^ o Contract shall reportdirectly to this Project Manager unless otherwise directed.9 } w 2. The designer has conducted no studies designed to discover the presence of any hazardous Deed Book: (unk) w substances on this property and assumes no responsibility or liability resulting from the presence ■ Zoning: RA on anysuch substance.': Magisterial District: Rivanna District �� v 3. The contractor shall obtain all permits required for this work and pay all associated fees. Overlay Districts: EC (Entrance Corridor) 4. Paved or rip rap ditch may be required when, in the opinion of the Resident Engineer or hisTY00 Count of Albemarle Vir inia designee, it isdeemed necessary in order to stabilize a drainage channel.MS Waivers Requested None ax a e c ion arce 5. A] traffic control signs shall conform with the Virginia Manual for Uniform Traffic Control Devices,P 79) P I 8A Reservoir Watershed: None latest edition, and shall be provided by the contractor. Datum: USGS 6. All excavation for underground pipe installation must comply with OSHA Standards for the Construction Industry (2j9 CFR Part 1926). Benchmark: Traverse pt. SW corner of site (392.6) m m o r o 7. All materials and workmanship shall conform to the VDOT Road and Bridge Standards (latest Survey: Gloeckner Engineering/Surveying, Inc. 0 o w N edition) and the VDOT Road and Bridge Specifications (latest edition). Topographic Information: Aerial- Gloeckner Engineering/Surveying, Inc. APR2007 0 = _J T _J Q Concrete and Asphalt Supplemented by Asbuilt topo along Rt. 22 FEB2009 o Utilities o 11. All forms shall be inspected by the project manager or his representative before any concrete is '-` p, w 1. Any damage to existing utilities caused by Contractor or its subcontractors shall be Contractor's sole (placed. The Project Manager may require Contractor, at no additional cost, to remove and replace 0' m m = o responsibility and repaired at Contractor's expense. {concrete placed prior to or without such inspection. ALBEMARLE COUNTY ¢ Z m 2. These plans do not guarantee the existence, non-existence or location of utilities. Contractor shall 26. All material inside forms shall be clean and free of all rocks and other loose debris. Sub -base r FINAL (PLANS NOTES Z E Cn d Q Q > Q � Q p g a_ w w C w D\ w verify the existence and location or the non-existence of utilities. At least 48 hours prior to any imaterial shall be compacted by mechanical means. Generali Construction Notes 0 r- o cn Z LA_ Z excavation or construction, Contractor shall notify MISS UTILITY (1-800-552-7001) and/or the 27. Concrete shall not be placed unless the air temperature is at least 40 degrees Fahrenheit (F) in the 1. Prior to any construction within any existing public right-of-way, including connection to respective utility companies for gas, water, sewer, power, phone and cable. Contractor shall timely shade and rising. any existing road, a permit shall be obtained from the Virginia Department of arrange to have the various utilities located, and to have them removed or relocated, or to determine the Transportation (VDOT). This plan as drawn may not accurately reflect the requirements of method of protection acceptable to the respective owner, if the method of protection is not otherwise 28. 1!2" premolded expansion joint material shall be placed at a maximum of 30' intervals on new - the permit. Where any discrepancies occur the requirements of the permit shall govern. specified. Contractor shall conduct its work in the vicinity of existing utilities in accordance with the sidewalk, curb, curb & gutter, at each end of driveway entrances, at each end of handicap ramps, - p y g y g g protecting p 1 g g Project 2. All materials and construction methods shall conform to currents specifications and respective utility's rules and regulations. An cost incurred for removing, relocation or rotectin utilities some point on entrance walks and steps adjustments, and along buildings and walls where new % v p shall be borne by Contractor unless indicated otherwise. Contractor shall excavate to locate buried concrete sidewalks are placed against them. ;Ei „ standards of VDOT unless oiaierwise noted. 0 0 utilities far enough in advance of its work to allow for horizontal and for vertical adjustments to its work _ 3. Erosion and siltation control measures shall be provided in accordance with the approved ; N 29. All existing curbs, curb & gutter, sidewalk and steps to be removed shall be taken out to the nearest ;_ 4, con cN Ln and/or the utilities. No adjustment in compensation or schedule will be allowed for delays resulting from i erosion control plan and sn� �l be installed prior to any clearing, grading or other Z - > �, join l. Contractor's failure to contact and coordinate with utilities. construction. Q >'n C 30. IExis; ; ? asphalt concrete pavement shall be saw cut and removed as per the specifications. Removal ` "�► * ?> _ 4. All slopes and disturber areas are to be fertilized, seeded and mulched. z - ``' ca 3. When the work crosses existing utilities, the existing utilities shall be adequately supported and shall ti done in such a manner as to not tear, bulge or displace adjacent pavement. Edges shall be r ti • ,... r' - m .- protected from damage due to the work. All methods for supporting and maintaining the existing utilities Mclean :.and vertical, all cuts shall be parallel or perpendicular to the direction of traffic. *� � 731 5. The maximum allowab°�. �- ope is 2:1 (horizontal:vertical). Where reasonably obtainable, o - P p p d U s-- W> N N Ln shall be approved by the respective utility company and/or the Engineer. Contractor shall exercise care lesser slopes of 3:1 or better are to be achieved. ° I 1 Q to insure thatthe rade and alignment of existing utilities are maintained and that no joints or 31. Lisp _ si of all excess material is the responsibility of Contractor. u, 0 " g g g l - # , 6. Paved, rip -rap or stabilization mat lined ditch may be required when in the opinion of the � 0 o connections are displaced. E';3ackfill shall be carefully placed and compacted to prevent future damage ��; -I--Q- r o County Engineer, or designee., it is deemed necessary in order to stabilize a drainage or settlementto existing utilities. Any utilities removed as part of the work, and not indicated to be 7a9 �'c' channel. _U ° removed or abandoned, shal,ll be restored using materials and installation equal to the utility's , Y ,standards. Drainage 7. All traffic control signs shall conform with the Virginia Manual for Uniform Traffic 4. Contractor shall notify landowners, tenants and the Project Manager prior to the interruption of any 32. Contractor shall exercise care, especially at intersections and gutter lines, to provide positive drainage. ' } a Control Devices. w services. Service interruptions shall be kept to a minimum. Any areas where water is impounded shall be corrected by Contractor at no additional cost. Positive �d" f , ° 8. Unless otherwise noted all concrete pipe shall be reinforced concrete pipe - Class III. drainage of all roadway areas to the storm drain inlets or other acceptable drainage channels as noted on 9. All exrcavation for underground pipe installation must comply with OSHA Standards for o 5. The adjustment of all manhole tops, water valve boxes, gas valve boxes and water meter boxes shall the plans is required.the Construction Industry (29 CFR Part 1926). be the responsibility of Contractor. Kcin, Map ( Yui SCc7 ;9) 33. Contractor shall maintain existing streams, ditches, drainage structures, culverts and flows at all Contents. 6. All water meter, valves and fire hydrant adjustments/relocations shall be performed by the Contractor. ttimes during the work. Contractor shall pay for all personal injury and property damage which may coccur as a result of failing to maintain adequate drainage. Erasion Control &Work Area Protection and Maintenance Coyer 34. All pipes, DI's and other structures shall be inspected by the Project Manager before being 1. All fences required to be remIoved or disturbed by construction shall be salvaged, stored, protected (backfilled or buried. The Project Manager may require Contractor, at no additional cost, to uncover N `o and re -installed by Contractor at the direction of and location designated by the Project Manager. If and re-cover such structures if they have been backfilled or buried without such inspection. �. Site Plan 0 such fence material cannot be reused due to damage caused b Contractor, Contractor shall install 35. All catch basins encompassed within new construction shall be converted to drop inlets. s� g y 3. Grading Plan a �, new fence of the same type of material. Temporary fencing required by private property owners shall be oo ao provided by Contractor. Contractor is advised to contact property owners at least forty-eight (48) hours 36. (Removed pipe shall be the property of Contractor and if not salvaged for re -use, shall be disposed of 3A. Entrance Sightlines W M m in advance of removing any fence in order to coordinate relocation and/or protection of any animals, llawfully. and to establish and confirm:with the owner the pre -construction condition of any fence to be removed, d 0 N disturbed or replaced. 37. All storm sewer pipe and drop inlets shall be cleared of debris and eroded material prior to final 3B. Entrance Grading and profile °�' � o "L M p acceptance. Note: It shall be the responsibility of the _ .�,� 2. Contractor is permitted to work in the public right-of-way (followingissuance of VDOT approval) and cLo any temporary or permanent: easement(followingverification of existence of easement) shown n the 38. All storm sewer pipe joints shall be seated and sealed in accordance with the manufacturer's owner to obtain or verify the presence or `'r. Uti I ities plan ca plans. However, Contractor shall notify property owner(s) forty-eight (48) hours prior to working on any specifications. L private property to coordinate access and to determine a storage area for materials if needed. need of all necessary permits if required uired 4A. Drainage Area Map 39. All existing roof drains and other drainage conduit blocked or disrupted from their pre -construction y p `1 Coordination of access to public right-of-way and storage of materials thereon shall be coordinated with p rte' M p g y g drainage patterns shall be shortened, extended or otherwise routed using materials approved by the 4B. Storm Sewer Profiles VDOT and the Project Manager. Contractor's failure to so notify and coordinate with property owners Engineer, and in such a way that the new drainage patterns are acceptable to Engineer. including (but not l i m (ted to) r` m and/or the Project Manager may result in delays. 5. Stormwater Management Plan 11. Contractor shall, at his expense, maintain the work site in a clean and orderly appearance at all times. 1/egretation All debris and surplus material collected shall be disposed of off the work site by Contractor, at his 5A. SWM details expense. 45. Prior to removing any vegetation, Contractor shall meet with the property owners to review the limits of �VDE{:�/Corps of Engineers rr construction and obtain permission to remove vegetation required to do the work. , Erosion Control Plan anurance permit 12. Existing lawns, trees, shrubs, fences, utilities, culverts, walls, walks, driveways, poles, signs, right -of- Local Land Disturbance way monuments, mailboxes and the like shall be protected from damage during the work. Any damage 46. Tree and plant roots or branches that may interfere with the work shall be trimmed or cut only with the L1 caused to such items shall be repaired or replaced by Contractor at no additional cost. Property pins approval of the Owner. Any trees or plants which are shown to remain that do not interfere with the \I DCR SWPPP Permit 6A. Erosion Control Narrative disturbed by Contractor that are not shown on the plans to be disturbed shall be restored by a licensed work, but are damaged by Contractor or his subcontractors, shall be repaired or replaced by Contractor surveyor at Contractor's expense. at no additional cost.*Local zoning Permit 13. Contractor shall employ erosion control devices and methods as required to meet the requirements rV e and intent of the local Erosion Control ordinance. Contractor shall provide the necessary diversion ditches, dikes or temporary culverts required to prevent mud and debris from being washed onto the Traffic and Signage streets or property. Contractor's vehicles shall be kept clean to prevent mud or dust from being 47. All no parking requirements shall be provided by Contractor with approval of the Project Manager. o deposited on streets. No area shall be left denuded for more than seven (7) calendar days. �^ ` / l y } 1 C 48. Contractor shall provide necessary reflectors, barricades, traffic control devices and/or flag persons to J� cI)i_- ekrc L -on 0i5furbc1- ( �G / Gei/ ificG�io/7; Q9 14. Contractor shall clean up, restore, seed and maintain all disturbed areas immediately upon insure the safety of its workers and the public.Department of Planning « Community Development Date completion of work on each site. Topsoil, seed, fertilizer and mulch shall be placed in accordance with For purpo_-,-c_,5 of p/an rcvicrw, /one P/0 wi// be the professional enginccf or surveyor codifyingU City standards on all disturbed areas. A permanent stand of grass adequate to prevent erosion shall 49. Contractor shall maintain safe and passable public access to properties and the public right-of-way E 6 Burin construction. Access for emergency vehicles shall be maintained at all times. lhi5 drawing, Frio( ro is�vancc of a /ond dim/urbane permit or grading pernd the owner sr?a// N be established prior to final acceptance. g g y LjiJ a 50. Except as otherwise authorized in writing by the proper authority, the work shall be coordinated provide an P/ -P for the construction perdiod, The followinq contact inforoation 5hatt be used Architectural Review Board Date Z > E _ Q) and performed in a manner so that all existing fire hydrants shall be accessible at all times during for the Construction eriod, ~ Z 0 e -0 Earthwork and site conditions I''I the work. p c Q o _ 15. Except as otherwise shown on the plans, all cuts and fills shall match existing slopes or be no greater 51. Contractor shall notify and gain permission from the property owners twelve ( 12) hours in advance Department of Fire &Rescue Administration Date than 21. of blocking any entrance. No entrance shall be blocked for more than twelve (12) hours in any 24 >, 16. Unless otherwise noted on the plans or in the specifications, all fill materials shall be compacted to 95% hour period without approval of the property owner, except where new entrances are constructed. N of theoretical maximum dens'ty as determined by AASHTO T-99 method A, within plus or minus 2% of 52. Within 24 hours of their removal, Contractor shall replace mailboxes, street signs, traffic signs, and � j optimum moisture, for the full width and depth of the fill. the like that are removed for construction. Permanent or suitable temporary items will be used as the V a, � Ccrt, No,; Albemarle County Service Authority Date 17. All grading and improvements to be confined to the project area unless otherwise indicated. status of work permits. Permanent or temporary stop signs must be in place at all times. Costs should be included under the various unit bid items. No separate payment will be made. 18. All materials and installation details shall conform to applicable local ordinances. Gontacr T-c/cphonc No,,, (tj 19. Any unusual or unanticipated subsurface conditions shall be immediately reported to the Engineer. Virginia Department of Transportation Date 20. Contractor shall verify all dimensions, elevations and locations prior to beginning work, and Miscellaneous immediately notify the Engineer in the event there are any discrepancies between such conditions 53. Contractor shall obtain all necessary permits, inspections, bonds, and other approval related items in and those shown on the plans and specifications. accordance with these plans as well as local, state, and federal policies. Thomas Jefferson Health Department Date SHEET NO. 1 OF 6 _ DWG. No. 07-020 _r 042 N/F Ray A. Graham, TM -P 79-10 D3 329, P° 720 Zoned RA Use: Unimproved _ r�i y Derue Vegetti�/1�, 1 �i N/F Lloyd !Wood, Jr. TM -P 79-09 ' ✓r ° DB 8.24, P 203 f Zoned C- 7 Use. Commercial = i I TREE P FENCING CTECT)(01V /fes/(y7�� 016 1 -( N/F Ray A. Graham, l/I TM -P 79- 70 DB 329, P. 720 ' Very Dense Vegetation Zoned RA Use: Agricultural /0, ( �'---.. 1 CG6L .T•-,z�.f,�- �+r-.:. sQ, _; f t �", ,` �C�{ �-� -�-, `_ .J.-_ - _ ` . .r�kc- ,{-„�-�wT � fit+ ( - � x- �.;��-”` t f -( �"�. +�_F-�,-x^�,-"�'-.., _ G6Lyb t --r •) .�,�,��, r•-1 � .. ,--r -„ x � 4 k � x v- r � ),-x ( (r r _r�, t - �".'_. C ': t`-,�- -"�--� Tk _'�'""� '_(. '� � - _ -- =' i- + _�- - - ,..� (r �r -x;- ;.,; � ....--ar,*-rte- �'�� � �---'�` r "fi` _ • -< ' ` ° c O E4 T llNr - -. � �t.,9 rT,'T� (( .>< Js� L}\ l __\ ♦ ` Q�< ;r•.-.-� i -- T Bumper B/ock _<� � _ � (r �� � - + Typical along side walksSrle+ra/ �'--„� `--• r ';. t-T+`r '-^-C- };:�` /�`-" t7BG -�•� (. ~ �. / ' ' �I '"-` e �,' ) ��' -sde�, "' �� I �- _, _ ' - r�(+�`"` -tom (' :. � i �,; � i `" �'`�\ �-� j J�'--��• / %('� ) =S-*�F r L._l�� 7, 1 ( 1': <r; ,,, ��(, _K .�,:<S, r. _.-�._;t�-.�, r. ,.. '?--�-�-�`-^-_"� ,_, _:Ts t-r-�..�..- �s� _ /� _a�'+� �a ♦ i. F.C'A .-.. VT.Ci+� -- i t ---- 1 V •--- rr A c�i rk�ng •d _~-�%� F/tl--._._fir L�,.,0 I'i3"-. I W / - -_ i I'.�,, r r I _ _ _ _ J' r tl '`7�s Steil -.•.�_a/ \.= F/!]�r---�LFiLi----_.w W-...__- G S 1 - �..rTi--'`-'TAL(. t 7) _� _S.�AS GA ---r OF 0/!---_._.Ol/d P/H- '"_O - _�_GkS - GAS r' _ - _ _ —�-- �... GAS F 1: O QHE E'1j-.-.��t]/.i F/ F/1J---�_- 4y GAS a .. GPS F/o-- ` i� Vie q /j ""--• ___--__-__ _ QHE `" F/p--.-�. 0-W -_ /� �p _'�"�TiAs �l C1�.'`... _-- -`�-QHE s� F/p` F/(h11DFpy TI _�Dyt�'� GAS - GAS /VCJ6 �41,�D �d --�{� 34 Ii�,�1(/CI F/ f/° f/❑ _ ...� E �_. = F/0 UPJC P I ?n IL --,� � — W — W 3 � GAS Jv*i � _�� " `f /❑ °HE _ = p OH / r- 100' Taper _) J( / j Oates _ �10� I r 170' T�// --1 /- �/ el lye an AF Mod /� yr (j� IC's � 4ti' r / " ( I ,j;1• tai sY °- '" f /° / ° /°� N/F Robert Carolyn Vl� Il�ichie 48' taper /?--1 K. TM -P 79-17C % ^t Std VDOT -i CG -11 D3 7766, P. 416 r-' 3" Entrance DB 543 P 528 �-' / "Ll—F/Q- F/ W ___ W _� As'° , F/0 7HE-�- °HE -- a{ �je Off° WPJEF `/;ETES PI i I— ONE ° - F/0- F/Ll F/L) C1-- 7/0— F/Ll�f F/Q- F/r)- �d9e __ '�^••�,�� F/0— F/0— F/0 F/0 F/0---- F/P_� 0V•�E/° Eimer _"'e"<-. r.� �..! -�-( i I' N° / Zoned RA P EDFS TA.L z '.�Wtt OHE--_ _ APProX OHE� OHE-PHE--"'_ 9HE �( IJ _ 9 / - ___--- --- OHE--__ OHE--.__ OHE---_ OHE--.__ 0 PHE Use: Resldentlal i---__---------- ---------- -TAI --- _ __ ' - incl PEDESTAL ti=_ -----" -- _ -__ �� Ed e _ 9 —, , ti CJ --_,_- y,S ?aIFTER> i- r 1114 1-1 rN _t- ( - --- ------------ - �_ I � I - t—r- I7_ rs , a _ ,- aO - _; - - o, o� " ( N/FAmerican Legion J=ry ati ,/° Post 74 Lodge Inc, 5.9 IT r 37 I Zoned C- 7 / _ I - - Use: Commercial -� -- - I - Site Data: Revised 1 -Sep -09 Dumpster Pad k Enclosure (TYP.) 3 f t. min, I r A. a • A a — A . e : A . • A a • e • e • e . y . • , a . Double Dumpster Pad— ,,0pp �° °'e• ° °''.A.A. A• j Single Dumpster Pad -a.' • D a a � ,D a �jr/•(• 6' e a .•N +' few °.e A. e•A 4 Vat .0j.. • D. � D, i a� � D. � D• Ila. e •A'A' •'•A.'•A:A• •'.A:A d A � e a 5" ID Steel Bollards Concrete Filled Enclosure: - Walt section. block with vertical wall panel to match building. 6" Conc. Pad with 6 x 6 W1.4 x W1.4 Brush Finish 4" YDOT 21A •A C'u ey°rete to be 3000 ;1='moi Ob C17C,iat 2a%'tttI6 {°x `r_trit')`r r,•' °iii, e)r # bac./,._- l? O.C. ECte•1t 2l.%rre/, / Van Accessible Space (8x18 ft.) 18 ft Van Accessible Loadir Space (8x18 ft.) 18 ft, Standard Space (9x18 ft.) 18 ft, Bumper Block to be concrete or treated timber, 6 ft. long, anchored at each end by Min. 30" No. 5 Rebar. 6'0 CONC. FILLED STE POST Typical Parking Space Dimensions and Designations (nts) GRADE 4,-0' POURED CONC, a T � D C' cu v I (U v - V-6' C D 1' 6' No state BOLLARD Coverages _ - / D lF/p OHE FIBEE l F/0 Parking Drainage Haaltlonal Project: Charlottesville First Church of the Nazarene' % Sq. ft. of sanctuary= 7344 % Tp Albemarle County t Req'd Parking 1 Space(s) per 75 0% 78,917 f' ' or 97.9 spaces METHOD 1 Owner: Charlottesville First Church of the Nazarene 68% Alternate Calculation 100% 0.55 294,901 1011 Elliot Ave. ... Max No. seats= 374.0 nia nia Charlottesville, VA 22902 "- Req'd Parking 1 Space(s) per 3 or 124.7 spaces METHOD 2 Contact: Charlottesville First Church of the Nazarene '' Attn: Pastor Bill Willis Existing Std Spaces= 0 Q) 1011 Elliot Ave. Existing H.C. Spaces= 0 New Std Spaces= 128 (9'x 18') standard spaces Charlottesville, VA 22902 New H. C. Spaces= 5 (8'x 18' with contiguous 8'x 18' Loading area) 434-295-5537 , - Pro ect Total Spaces Provided= 133 Parking Spaces Tax Map & Parcel: TM 79 Parc 8A wt'•rI Buildings/canopy Parking/Drive/Walks Open/grass Total Existing impervious Coverage: Proposed Impervious Coverage: Maximum Structure Height: Paving Type: Max. Number of Employees Number of Seats/Visitors irreae)eiopea Drainage Haaltlonal Nostuevelopea s.f. % s.f. s.f. % Tp 0% 14,839 14,839 5% - 0% 78,917 78,917 27% 294,901 100% 201,145 68% 294,901 100% 0.55 294,901 100% 0% 32% No Landscaping Plan Req'd at Prelim. 35 Ft. Asphalt 10 (Anticiipated) 374 Acreage: 6.77 Acres (Per Recent survey) - Deed Book: (unk) Ac. Zoning: RA " y \� " y +w i i \�y. Yf 034 Magisterial District: Rivanna District %,w 73i 1.81 Overlay Districts: EC (Entrance Corridor) 4.62 Waivers Requested None 6.77 f?/ �;a rV;t, , Reservoir Watershed: !None 72-9 Datum: IJSGS i Benchmark: Traverse pt. SW comer of site (392.6) .r;. Survey: t;loeckner Engineering/Surveying, Inc. Topographic Information: Aerial- Gioeckner Engineering, Inc. APR2007 Field Supplemented (along Rt. 22) FEB2009 V cin. Mai") (No Scale) Stormwater Runoff Summary Table //''�� t Charlottesville First Church of Nazarene 20 --Feb (dote Pond reduces 2 yr. event by approximately 1.62 cfs, or 37% Pond reduces 10 yr. event by approximately 2.46 cfs, or 38% 1. All Radii and dimensions are given to Face -of -curb or edge of pavement, 2. Hashed curb line (iminnnill) indicates reverse (splash) curb. Drainage Q) N O Area "C" Tp Q2 Q10 (ac) (unitless) (min.) (CFS) (CFS) Current (predeveloped) Condition 7.9 0.30 35 4.4 6.5 Proposed (Postdeveloped) Condition without Pond 7.59 0.55 8 13.44 18.31 Proposed Discharge (attentuated) from Pond nia nia nia 2.78 4.04 Pond reduces 2 yr. event by approximately 1.62 cfs, or 37% Pond reduces 10 yr. event by approximately 2.46 cfs, or 38% 1. All Radii and dimensions are given to Face -of -curb or edge of pavement, 2. 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I j I - - - ,/ /; --- , -� " I - - �� � - � - - - - -- -- - - - - - - I 11 I ---- --- -), - \ ---- -- - - ----- � - - - -� -- -- ----' - -- - - �, - - ---, ----- --- --- -- I / - [--- I I ` T- � � " -- - --�, ( I - � - - , - I --1 -�- -- -- --_- -�- --- ---- - �- - - -- - , - , - -- I �, / i �, ,-- - C / � \ Use,, - ��-' --- -�- - / � 1, - - - --- , - -- - - -- � , \ , , " _-7F - � I r_�� - - ---- ---- --- � � ,- - - - --' -'�, --_-- --' -- -� -- - - ----- - \ / I - 1. -------I - _-_L - � - - - - - - - , --- - -----,� - --- --- ---- - -- / \, / - - - > - , - - I �-_--� - - - - ---- - / \ � I �- "I"- T - �_,, � � " - - � _ z , �, - -, --- - -1 I/ I -�� I - I - � -- ) - - - - \. / - I I -�\ 4 T I V------ I I I �� i, � �' I i / /, ,��, I I - - � , -- - - __---- - -- To ck Coo t C) 0 C) 0 --, 0 0 0 i of 0�oJOO,00 0 C 0 "I 1*1 - 00-0 00- -0-,0-( 0000- 0 90000C o 0 o00 ( 0 - 000 .0'- , --� 0 oe:-� 0 (�90 00 - 0 0000 00- 0 U "� .o o noo o o, n ,/) 0 �)CX�7k SUBGRALE COMPACTED TO 1 957. MAX DRY DENSITY PER ASTM -D-698 � PA VEMEN T SECTION N, T, S, Interior Parking and and Travelways Note: 1. Contractor to use extreme caution and coordinate lowering of Gas main with City of Charlottesville Gas Division (Contact Phil Garber at 434-9710-3811) 2. Contractor to use extreme caution and coordinate lowering of undergraound phone lines with Embarq (Contact Theresa Bryant at 434-971-1371) 3. Contractor to contact Miss Utility and verify location, type and depth of all utilities prior to beginniing grading or clearing activities. 4. Primary drainfield shall be placed as a first step in site constrcution. This field shall be installed in undisWrbed soil and shall operate below the permanent parking area. Project: Charlottesville First Church of the Nazarene Date: 19 -May -09 Substantial Graded Area (s.f.) 4' 44000 ps- i S.f. RE-iriForcecl Conc, 6. S#dewalk, 4' wid. Assume depth of topsoil r- 4 " #57 in. 0=� - . * Q) . - . . . - - . Z) •. Cl-. . - '�7�• rl- . . - - 0 1 a' ca. 0. � , :;>. , . 0 0�- . . . . : . . . a Q) . or . 0( . . . . .0. . -> Q, '�;. -,;A� .. . . . , -N I . /r� - n. n'. /� - Paved/grad Area(s) . - - - ,- a 17� �Q-�-;-�'- .��.. . .0- -�'-. 76 , ��'. . - . . F U LXV Z 00- 00 - 0 U 00 00 0 �) C i , 0 -1 H D o 00 C, "I 8"O" ,� 10 in. 0000 80 �-' 0 0 00 0 0 00 -, ? 0 0 �) Measured Volumes (C.Y.) 0 0 0 000b - , -0 . \ SUBGRADE COMPACTED TO 957 MAX DR1Y DENSITY PER Fill ASTM -D-6 98d Assumption Reinforcement ito be Raw Site 6'x6" Welded wHre 13589 or approved equo,(, SIDE -WALK SECTION I N, T, S, - To ck Coo t C) 0 C) 0 --, 0 0 0 i of 0�oJOO,00 0 C 0 "I 1*1 - 00-0 00- -0-,0-( 0000- 0 90000C o 0 o00 ( 0 - 000 .0'- , --� 0 oe:-� 0 (�90 00 - 0 0000 00- 0 U "� .o o noo o o, n ,/) 0 �)CX�7k SUBGRALE COMPACTED TO 1 957. MAX DRY DENSITY PER ASTM -D-698 � PA VEMEN T SECTION N, T, S, Interior Parking and and Travelways Note: 1. Contractor to use extreme caution and coordinate lowering of Gas main with City of Charlottesville Gas Division (Contact Phil Garber at 434-9710-3811) 2. Contractor to use extreme caution and coordinate lowering of undergraound phone lines with Embarq (Contact Theresa Bryant at 434-971-1371) 3. Contractor to contact Miss Utility and verify location, type and depth of all utilities prior to beginniing grading or clearing activities. 4. Primary drainfield shall be placed as a first step in site constrcution. This field shall be installed in undisWrbed soil and shall operate below the permanent parking area. Project: Charlottesville First Church of the Nazarene Date: 19 -May -09 Substantial Graded Area (s.f.) 205203 S.f. 6. Assume depth of topsoil 3 in. Al !�E - Paved/grad Area(s) 66613 S.f. F U LXV Z Depth of Paved Section 10 in. E. 2 I ,�� �:-, Fq -, . F-4 O-) Measured Volumes (C.Y.) Available Required -0 Cut Fill Assumption Raw Site 14025 13589 C.Y. (unadjusted) Travelway Section -2055.96 C.Y. (2" asphalt and 8" agg. Section avg.) Bldg -407.611 C.Y. (21" floor and 4" agg.) 0 YI-- Sidewalk -207.511 C.Y. (21" conc. And 4" agg.) = -J Raw Totals 14025 10918 C.Y. U -3 0 --D Unavailable for Grading 1900 n/a (topsoil unavailable) �- E 10% n1a 1092 (Compaction, additional required) Adj. Totalis 12125 12010 C.Y. U, M excess -115 c, y, or 3192.0 c, f or 0% of the earthwork z :2E U - 0 M < z operations R < LLJ �' < , ---, �Z3 or l'over 55.8 ft. by 55.8 ft. - C) F-- U5 Z - G-- or roughly 13 dumptruck loads at 9 yd. Per Note: This volumetric calculation is for approximation only. No warranties (expressed or implied) exist and it should be fully expected that quantites will vary with site conditions, rock, topsoil, field changes, etc. Any, negotiations based on these numbers should be written such as exact quantites will be field verified or descrepancies expected. 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"1 ' 1 1 / / , / / ,_ ".-. *-, > LLJ I� I II _I i 3 � Ili �, 1 1 J I I (�I I I / I I I I �, , , I I r yo I <� r I / ,'/'j '/ i, S / / �/ '/�' z' 0 0 Ii O I4 Q) Ql < I II I I � II _ I �o`�'11 hI, I \ \^` I I 1 I I '1 y� I\ I, I II � �I I I I i I I 4 I / I �e I` / I I / / � j, ./ // j , / /" / 4, / 0 •� // / j 4i^ 001 � II N 0 Z I -II II I 1 1 I v", ` I / 1-._)/ ,/ \ /; j I c A FINAL � Dra wing 09NO V09 J7 F I / i , / S90 111"i 11 tl rr 4 /'I/ Com+ 01 i< r) V" Q) II I 0 X\� V Lj C) 0 0 LIJ J80 0- 10Wl� IN EIEV '0 -370.44 Lo cj LOW�'01� TST4 7A = 10 25 PV1 S = 10 fSTA F P E -V= 370.34 PV/ r -Lr- V W I i - 70*45 =,I/L /zf cl� L'j U m Ld 0 0 31 V/ AD - 8.00 A.D. t(l- 1.25 K-3.33 < z E 0 — < 3: < ZC > < C� C) -j I III i o 1 7 �� / < LLJ LLJ D cr) ,'I' I I� II II III -1 li � 1 I � \ o,.. \, � \ �' � \ \` � I -- � / i - _r / �'' !_ ':/ N � r �' 0 N T or 0 0 IN CN r-- 0 Ij 4 370— _0 z > < Ln N c > Ln r- 00 D IF I co II� \ , 0 0) Ln QD 0 or) cy) L < L) II 1 I I / Q) L) 4� -Q_ --t L_ Cf) 4_1 C) 0 0 C) 0 P 01 C.) G9 C) 0 C14 0 'I I I 'I I _ I 1 I A I I 1 � -> I , II II + - �.'' -� �\ I\ (,111 l 11 I I i �! I'I\ 0'' 1 ;' //, , ,` � - j` 0 11? C3 IA lo A 131 11+00 12+0013+00 14+00 (\d 0 CO M X C) m LL C: Lo CQ ® l -l- cn Q) C: Cy) S.- 0 C/) 4_1 C) N 4� U) C) F _1 < o E z � 0 4_1 Ld 0 C) 0 CCS SHEET NO. 38 OF 6 DWG. N0. 07-020 /ery Dene_ E, riri„n _( N/F Ray A. Graham, 111 - -- TM -P 79-10 DB 329, P 120 1 Very Dense Vegetation Zoned RA 429.1 '� '_� '�\, � \ �� _____, --�_ _ -i Use: Agricultural N/F Ray A. Graham, ` DB 329, P. 120 �� _ ``�- - - -,. o3p,1� Zoned RA�-13 Use: Unimproved _t TREE PR N6 0 j 5. vc ` • _ _r -( FF k� TEC%/'o y K , n-4 ; ^� .�----»,-+nom_ ,-,-+',1 \� +• .,, -} - - `-�' / , �'� VV"" ♦ - � f C,4� fi(',: ,i' .< f ' ` v , ,`,�`�-mak ��+-- ,`�-r --'^-X ---,, E"-, 'M�".''.r,,..._ '-`"- " `_` -T- ( `' ` \ ` _ \ ( i 0 r '� I Y . ,;;; 's ,--�''' ,: `-'-'-,-i-'r_=_=�'-<E 1 �-r. --f- lr �k-�'"`T , k,.( FY "'',-!.�'�,--,- t"l l ,r r, l i T `✓cl✓ Dcn Jr' _._ �. . r -.-..r,-. , Lac P j-= ,,-f. -__ ' , --ir.�4r+--r-"'-'„--^`--'-1---�-,. 4:"+{ 4- "..<� ✓--.'.<r r1, �. ��_ `.�) -._` -- - r" �� \ O G i T t �f 7 r .r -- F".: ;:',,. ,,.:; ♦ -_ ,. ,. ,.. ----� :nE :.," .-. � '.,, ,,,::," :--`^----.,,,..--:-r.:,:., ,', .r ,-.--rte n ,-+.'„ �\` �``-�4=-='� ,�i - ;_ TrtE nn i ',/-ry D n';e V -q -[u ir;" / I - 3;;r` �r`,n f+,. w', ,,fi ; pig F, EE x r H E,R,alIT -F N/F Lloyd Wood, Jr. TM -P 79-09 ' o DB 8?4, P 203 / ®� Zoned C-1 Use: Commercial MI I o s Virginia Dept. Health Method) Conventional Drainfield Sizing Project: Nazarene Church Primary Da to : '15 -Aug -07 Required Area Formula: Log(y) 2.00 + .008(Rate) -`ONE- .. UHS��. "-' `(. J L_ kY W �A�----� I V87 F,\ 0 W GAS_"" i'Y i� i -- �-n�.,'O�_; ✓_.--F�r.,�- 7. 1 --"'_ Flo d - ON,- F/O/!I'� '1 `F I�4 i� i' lit}y 'P15- fiAS 1 .. ,n _,=h_`�, or Y /!__ 1"_- 0/j _ SEI O�� T iJ W GAS-� `- s rAI_ZC _ Oe - -0/J F/0 -r: n- __ _ �r- _-Oi/,�-_ F/0- W GAS GAS ' ° ONE L/.d F/0 W D3_ f//GAS - G.A- GAS YOt XX S - GAS _ q > FI F? rip 111 F/O_ F/0- _ _- F/0- F/0- F/ OHE W W _ £ FlTER )/IF -ER F IT - - ' OH j. F/0 F/ q-- F/11 F/0--=/+41- _ E O 0'-- F/0-- -- F/0--_' r -, UE , T AL - __-_OHE OHE--Y F/0-- F/0- F/0 F/0 \;\ ❑HE- OHE-'"'-_ dHr• _.( p GHE--GHE----OHE----_GHE-----ME---.-❑ OHE / -'0' _._-_ _ N,0 P,DFTAI_ _ °_----------T\-�M� Edge of avennen ' ------_-- G,,- f,iETEP" 1 _ / N/F Robert K. & Carolyn W. Michie TMP 79-17C DB 1766, P. 416 DB 543, P. 528 Zoned RA N° Use, Residential -- -Ir -- ----- _ _-- _ __ - - - -<-'- Contractor to connect to existing `- � i 11 I_r --•-r �lT--r ° r'i; J, , �_ _.,r__. �-4 )-------- -- ---------------------------------------------- se -- _ /-rf^ ( Denno- lU/FAmrican Legion -'v o cuavert end with vDo� DI-3B(shallow). ` Post 74 Lodge Inc. - I 0TM-P 79-19 0 ° Contact Americast. Flow: Quant, Units Flow Per Total 1 Is 689 689 0 0 Z ,' 3 7 5.9 Zoned C-1 104 r I 2.2 Use: Commercial 0.17 -i - ' 1 2.1 9.7 5.6 9.718 Line ToLine Line Length Incr.Area TotalArea RunoffCoeff. IncrC x A TotalC x A InletTime TimeConc Rnfallnt TotalRtunoff AdniFlow TotalFlow CapacFull Veloc PipeSize PipeSlope Inv ElevDn Inv ElevUp HGLDn HGLUp Grnd/RimDn Grnd/RimUp Line ID 15.99 d (ft) (ac) (ac) (C) (min) (min) (in/hr) Wfs) (cfs) (cfs) (cfs) (ft/s) (in) (%) (ft) (ft) (ft) (ft) (ft) (ft) 392.23 1 Outfall 45 0.4 3.3 0.8 0.32 2.63 4.9 10.3 5.5 14.'.45 0 14.45 16.17 4.6 24 0.51 392 392.23 394.32 394.5 395 400.75 B to A (OUTFALL) Flow: Quant, Units Flow Per Total 1 Is 689 689 0 0 Z 2 1 104 0.19 2.2 0.9 0.17 1.74 2.1 9.7 5.6 9.718 0 9.78 15.99 3.11 24 0.5 392.23 392.75 395.12 395.32 400.75 401 C to B 15 2.93 397.01 400.41 397.84 401.03 404.25 407.7 H to G 0.18 0.07 Flow Rate= 689 GPD .... 0.01 2 0.05 0.02 {� 8 1 136 0.11 0.2 0.7 0.85 -+� ai Q 3 2 112 0.49 2.01 0.75 0.37 1.57 5.6 9.1 5.8 9.07 0 9.07 15.99 2.89 24 0.5 392.75 393.31 395.41 395.59 401 401 D to C W Z 4 3 207 0.27 1.52 0.8 0.22 1.21 3.7 8.3 6 7.;2 0 7.2 7.44 4.08 18 0.5 393.31 394.35 395.71 396.69 401 398 E to D N 399.32 406 405.25 K to J Perc Rate= 85 min/in. Source: Gooch Engineering 10 4 73 0.16 0.28 0.9 0.14 16 0.25 2.3 r-- 5 4 27 0.33 0.97 0.9 0.3 0.74 3 8.1 6 4.444 0 4.44 7.56 2.51 18 0.52 394.35 394.49 397.23 397.28 398 397.52 F to E 2.87 6 5 143 0.14 0.64 0.65 0.09 0.44 5.3 6.7 6.5 2.835 0 2.85 13.14 2.26 18 1.57 394.52 396.76 397.45 397.58 397.52 404.25 G to F ( l d d y legend W - Water Line 13 N- VDOT DI -3 0.08 1.9 7.1 0.8 7 6 116 0.45 0.5 0.5 0.7 2 .... 0.35 #Z1 0.35 5.7 5.7 6.8 2.239 0 2.39 11.06 3.35 15 2.93 397.01 400.41 397.84 401.03 404.25 407.7 H to G 0.18 0.07 Flow Rate= 689 GPD .... 0.01 2 0.05 0.02 {� 8 1 136 0.11 0.2 0.7 0.85 -+� ai 0.17 R -VDOT DI -3 0.57 3 8.3 6 3.441 0 3.41 12.48 3.65 15 3.74 392.98 398.06 395.15 398.8 400.75 406 J to B 0.25 9.36 Sag from Time dosed m 0 F- W Z LL Z 9 8 57 0.17 0.5 0.9 0.15 0.4 1.6 7.8 6.1 2.444 0 2.44 5.13 3.13 15 0.63 398.31 398.67 399.26 399.32 406 405.25 K to J Perc Rate= 85 min/in. Source: Gooch Engineering 10 4 73 0.16 0.28 0.9 0.14 16 0.25 2.3 4.9 7.1 1.79 0 1.79 5.01 1.46 15 0.6 394.6 395.04 397.3 397.35 398 401 Lto E 1.58 0.12 Max. Field Length= '100 ft. Source: Gooch Engineering X Headwall 2.58 36.1 2.87 0.45 3.33 0 3.33 0 Hdwall .... .... .... .... .... .... .... E 18 S- VDOT DI -3B 0.16 6.4 6.56 0.5 0.53 1.03 Max Field Width= 100 ft. Source: Gooch Engineering .... Sag 2 1 11 10 139 0.32 0.12 0.12 0.9 Sag 0.11 L 0.11 1.2 1.2 7.1 0.77 0 0.77 9.36 1.67 15 2.1 395.04 397.96 397.41 398.31 401 405.16 L1 to L 0.19 1.87 Trench Separation= 9 ft. Q 20 V- VDOT DI -313 0 12 9 52 0.7 0.21 0.29 0.7 0.57 0.15 6 0.21 3.2 5.6 6.9 1.445 0 1.45 22.48 2.27 15 12.12 398.42 404.72 399.58 405.2 405.25 412.05 M to K Trench Width= 3 ft. L 13 12 82 0.08 0.08 0.8 0.06 0.06 1.9 1.9 7.1 0.445 0 0.45 11.45 1.49 15 3.15 404.72 407.3 405.41 407.57 412.05 414 N to M �+' } 21 () 14 9 63 5.79 0.04 0.04 0.9 0.39 0.04 Curb 0.04 2.8 2.8 7.1 0.26 0 0.26 25.82 1.1 15 15.98 398.42 408.49 399.58 408.69 405.25 414.2 P to K 15 Outfall 45 0.94 3.77 0.45 0.42 1.73 10.8 37 2.8 4.91 1.17 6.08 13.19 3.44 18 1.58 367.05 367.76 369.32 369.47 371 370.87 R to Q (EXISTING) (U Number of Trenches allowed 12 16 15 83 0.25 2.83 0.6 0.15 1.31 5.7 36.5 2.9 3.74 0 3.74 7.26 2.13 14 X 23 0.51 368.01 368.43 369.78 370.06 370.87 370.79 R up to U Required Area= 298 s. f. 17 16 46 2.58 2.58 0.45 1.16 1.16 36.1 36.1 2.9 3.333 0 3.33 5.43 1.9 14 X23 0.28 368.43 368.56 370.32 370.37 370.79 370 U up to X E 18 outfall 56 0.16 0.73 0.5 0.08 0.38 6.4 11.7 5.2 1.995 0 1.95 5.18 2.09 15 0.64 371.5 371.86 372.6 372.63 380 375.31 S1 up to S(OUTFALL) L- 19 18 25 0.14 0.57 0.5 0.07 0.3 5.5 11.4 5.2 1.E55 0 1.55 4.66 2.15 15 0.52 371.91 372.04 372.69 372.7 375.31 375.31 S up to T Available System= 12 trenches 3 ft. wide and 100 ft. long, for 3633.3 sI. 0 20 19 133 0.13 0.43 0.7 0.09 0.23 5.3 9.4 5.7 1.29 0 1.29 20.54 2.32 15 10.11 372.04 385.49 372.9 385.94 375.31 390.81 T up to V Required System= 12 trenches 3 wide @ 91 length, for 3297.8 ss. f. � 21 20 21 0.3 0.3 0.45 0.14 0.14 9 9 5.8 0.78 0 0.78 3.01 1.99 12 0.71 385.54 385.69 386.13 386.13 390.81 390.81 V up to W OK, Use Available System rti Line No. Inlet ID Area InletTime Int. RunoffCoeff. Q =CIA Q Carry-over QCaptured QBypassed JunctType CurbHe�ight CurbLength GrateArea Grate Length GrateWidth GutterSlope GutterWidth CrossSlope, Sw CrossSlope, Sx LocalDepr. InletDepth InletSpread GutterDepth GutterSpread BypassLine No. 100 ft. wide by 100 ft. long (ac) (min) (in/hr) (C) (cfs) (cfs) (cfs) (cfs) (in)) (ft) (sgft) (ft) (ft) (ft/ft) (ft) (ft/ft) (ft/ft) (in) (ft) (ft) (ft) (ft) 1 B VDOT DI -3 0.4 4.9 7.1 0.8 2.27 0 2.27 0 Curb 6 2 .... .... Sag 2 0.083 0.04 2 0.48 7.82 0.4 7.82 Sag U 2 C VDOT DI -3 0.19 2.1 7.1 0.9 1.21 0 1.21 0 Curb 6 6 .... .... .... Sag 2 0.05 0.02 2 0.31 7.16 0.2 7.16 Sag Nazarene Church LU 3 D VDOT DI -3 0.49 5.6 6.86 0.75 2.52 0 2.52 0 Curb 6 10 .... .... .... Sag 2 0.05 0.02 2 0.35 9.25 0.24 9.25 Sag Shadwell 4 E- VDOT DI -3 0.27 3.7 7.1 0.8 1.53 0 1.53 0 Curb 6 6 .... .... Sag 2 0.05 0.02 2 0.33 8.37 0.23 8.37 Sag Design Sewage Flows 5 F- VDOT DI -3 0.33 3 7.1 0.9 2.11 0 2.11 0 Curb 6 8 .... .... Sag 2 0.05 0.02 2 0.35 9.13 0.24 9.13 Sag 28 -Mar 6 G- VDOT DI -3 0.14 5.3 6.97 0.65 0.63 0 0.18 0.45 Curb 6 2 .... .... 0.1 2 0.05 0.02 2 0.14 1.32 0.1 2.2 Offsite Contributor Note: Quantity Unit Unit Flow Sunday Monday Tuesday Wednesday Thursday Friday Saturday Total 7 H- VDOT DI -3 0.5 5.7 6.82 0.7 2.39 0 2.39 0 Curb 6 8 .... .... Sag 2 0.05 0.02 2 0.37 9.92 0.26 9.92 Sag Church service 450 attendees 3 1350 1350 GPD S-- 8 J- VDOT DI -3 0.2 3 7.1 0.85 1.21 0 0.31 0.89 Curb 6 2 .... .... .... 0.05 2 0.05 0.02 2 0.2 1.91 0.15 4.3 Offsite Extra Design attendees 50 persons 7 350 350 350 350 350 1750 GPD M 9 K- VDOT DI -12 0.17 1.6 7.1 0.9 1.09 0 1.09 0 Grate .... .... 0.83 2 2 Sag 2 0.05 0.02 2 0.15 1.49 0.05 0.94 Sag Extra Staff 10 staff 15 150 150 150 150 150 750 GPD E 10 L -VDOT DI -3 0.16 2.3 7.1 0.9 1.02 0 1.02 0 Curb 6 2 .... .... .... Sag 2 0.05 0.02 2 0.35 9.15 0.24 9.15 Sag Wed. Nite Service 100 attendees 3 300 300 GPD Special Sat. Event (50% of Sun Load.) 1 L. S. 675 675 675 GPD E 11 L1- VDOT DI -12 0.12 1.2 7.1 0.9 0.77 0 0.77 0 Grate .... 0.83 2 2 Sag 2 0.05 0.02 2 0.12 1.18 0.02 0.3 Sag 12 M- VDOT DI -12 0.21 3.2 7.1 0.7 1.04 0 1.04 0 Grate .... .... 0.83 2 2 Sag 2 0.05 0.02 2 0.15 1.45 0.04 0.86 Sag Totals 1350 500 500 800 500 500 675 4825 Gal/wk S 2 0 05 0 02 2 0 27 ( l d d y legend W - Water Line 13 N- VDOT DI -3 0.08 1.9 7.1 0.8 0.45 0 0.45 0 Curb 6 2 .... .... a #Z1 Drop Inlet Drainfield Dispersal Line - 5.32 0.17 5.32 Sag I I 14 P- VDOT DI -3 0.04 2.8 7.1 0.9 0.26 0 0.18 0.07 Curb 6 2 .... .... .... 0.01 2 0.05 0.02 2 0.15 1.44 0.11 2.65 Offsite Per day flew -+� ai 15 R -VDOT DI -3 0.94 10.8 5.37 0.45 3.44 0 3.44 0 Curb 6 14 .... ... .... Sag 2 0.05 0.02 2 0.35 9.36 0.25 9.36 Sag from Time dosed m 0 F- W Z LL Z ILLJ Q) System 689 GPD _ 16 U- VDOT DI -313 0.25 5.7 6.82 0.6 1.02 0 0.46 0.57 Curb 6 4 .... .... .... 0.1 2 0.05 0.02 2 0.16 1.58 0.12 3.15 19 17 X Headwall 2.58 36.1 2.87 0.45 3.33 0 3.33 0 Hdwall .... .... .... .... .... .... .... E 18 S- VDOT DI -3B 0.16 6.4 6.56 0.5 0.53 1.03 1.56 0 Curb 6 8 .... .... .... Sag 2 0.05 0.02 2 0.32 7.45 0.21 7.45 Sag L 19 T- VDOT DI -313 0.14 5.5 6.89 0.5 0.48 1.14 0.59 1.03 Curb 6 4 .... .... .... 0.1 2 0.05 0.02 2 0.19 1.87 0.14 4.2 18 Q 20 V- VDOT DI -313 0.13 5.3 6.97 0.7 0.63 0.39 0.46 0.57 Curb 6 4 .... .... .... 0.1 2 0.05 0.02 2 0.16 1.58 0.12 3.15 19 1 r �+' } 21 W- VDOT DI -313 0.3 9 5.79 0.45 0.78 0 0.39 0.39 Curb 6 4 .... .... .... 0.1 2 0.05 0.02 2 0.15 1.42 0.11 2.6 20 ( l d d y legend W - Water Line mr-- Overhead Telephone F/O Fiber Optics GAS Gas Line r Underground electric --E Telephone Service DHE Overhead Electric Line a Elec. Service Transformer #Z1 Drop Inlet F-=, Drainfield Dispersal Line - Storm Sewer or Culvert O HVAC Unit Note; 1. Contractor to use extreme caution and coordinate lowering of Gas main with City of Charlottesville Gas Division (Contact Phil Garber at 434-970-3811) 2. Contractor to use extreme caution and coordinate lowering of undergraound phone lines with Embarq (Contact Theresa Bryant at 434-971-1371) 3. Contractor to use caution to avoid and protect the reserve drainfield area during all aspects of project. 4. Primary drainfield shall be placed as a first step in site constrcution. This field shall be installed in undisturbed soil and shall operate below the permanent parking area. N I A N N O 0 O N r Q rr N 0 r E 2 cu?QQLnN s > LO r- -4-= I � J Cil .o = � � U O a7 U® W NN I I > O 0 O M m O U � N n S J 2 J v o LL v O E]22 9 N O CO S 22 CO Z O I> t m M U O W (D I- Q c-) o 0 C7 w w v v v to m 0 F- W Z LL Z ILLJ Q) N I A N N O 0 O N r Q rr N N Z . cu N I> r E 2 cu?QQLnN s > LO r- -4-= I � J Cil .o = � � U O a7 U® W NN I I > O 0 O M m O U � N n S J 2 J Q LL O ® Z m M U O W (D I- Z Z :�>: Q Q. C7 w w 3: �w > Q �\ n Q w \ o I- 0 F- W Z LL Z N N N O 0 O N N Z . cu N I> cu?QQLnN s > LO r- -4-= I � J Cil .o = � � U O U® W NN I I �U) -4-t 0 O ACL- 0 U � In 0 LL Z Q WJ 12 -J < �Z� I 0 0% M J .t 0CO X LL - Lo cv ®� co L LL d- a SHEET NO. 4 OF 6 DWG. NO. 07-020 r C 69; 0 i i I 429.1 ' r. DA N/F Ray A. Grafi am, /// c TM -P 79-10 I'' C e( DB 329, P. 12th T Zoned RA I Use: Unimproved CTREE p• I F�NcrN� °r&Cr I-' Uv I , F* APP ox N/F Lloyd Wood, Jr. TM -P 79-09 DB 824, P. 203 Zoned C-1 Use: Commercial DAN - 0.08 CLC. C=0.8 _ Slope= 18.8 Y a Len th=90 -`- Tc=1.9 n ^y N/F Ray A. Cry >Ln TM -P79-10 U w ' - DB 329, P. 126 " o Very Dense Vegetation Zoned RA d 3 ` - - - - - - Use: Agricultur, Cr g o_ DA W 0.3 ac.-- _- C=0,45 o o cs a o Slope= 10% r u DAG Length=275 _ Tw- r;.0 =9.0 '\ F`.,'=4ir. DAH 0,14 ac, _ C=0,65 P 0,5 ac, 0.7 Slope= 11.7 nc, Slop= 8.0 Length=221 9 SlopeTc=5,3- P pe= 1,0 Length=248 th=60 Tc=2.8 Tc=5,7 - _0 4v DA K 0,17 ac, i C=OJfu\ - '�.� - _ 1A C=0.9 Slope= 10% Lf Si�Q o ? or Slope= 12,0 DAL / ' gth=250 TC=S. _ 0&3 gth=99 0.12 ac, c=i:6 C=0.9CD lope= 16,0 9 Length -75 /_'-,� J i Tc=1. DAL opo FFNC/NC �TECT/olV o _{ L� 0.16 nc. / a fl i w v� DA JS 02 ac, i enoth 525 /---- - - -_ IPProx CG;�— _- u��" UHL---_ ❑HE--__ ❑HE---_ ❑HE--__ ❑HE ❑ ONE� - . _ Approx - Edge of Pavemen 0 -__o 00000-- T --------- --- Q --- j -�r - 0 0� _ N/F American Legion �J Post 74 Lodge, Inc. �)� ` TM -P 79-19 r__+375).9 - I Zoned C- i � I =0.5'" lope= 10/. ength=160=6.31; O I r4 DA U J Fl f/Qi F> z1S5 t C' 0.25 ac C=0.60 Slop 10% 100, OA \ 4 ,- 1- i_ .hone Poli O ,r JJ /��° N/F Robert K. & G ' IN-, / TM -P 79-17C DB 1766, P 416 wlluT E_- T -'r DB 643, P. 528 Zoned RA Use: Residential - °oo . - /o - ,v a� C 0-) U N i o p N z ul - N r-, Lf) M n O U Q Q Ln N w F + ? Ln h N FL-,, Z J W . � M 0) S _I S _I Q U - Li > N N V) U U _D 0 0 0 +- r� o adv U o � � z tY m m LLJ = Y O 1-0 :23: O Q 4 W j Q w W C) I- Of O F- :0:)\ (n z W E z a� C U N 0 0 N 0) p N z ul - N r-, Lf) U Q Q Ln N F + ? Ln h J W . � M 0) U DCO U - Li > N N V) =0 cn I I C)V) 0 0 +- r� adv U o U L� Q L1J J IY LLJ FJ-- Q Q Fzw LL Q z <t ry 0 E2 W `e - S./ 1 ct r N 0 r� 0 N tS7 N Q O CO t� -J d ®� x ,n M (Y) d- it i n 0 an m C O CY 0 C) 1 SHEET N0. 4A OF 6 1 DWG. NO. 07-020 - __ - - ,- , - - - - - - - __ . __ I I - __ - - - -1 - - - --� __ -_ -- ------- -- - -_ - - - < - __� - - - _�_ - , - __ - __ ___ __ - __ - I __ -,-- I '­,__�_ ____ _� - - � \ - __ ___ - _,�_, __�, -I----- ------ ------- -- � I , " __ - - ------- �_:__ - ��_ -�- ---- - - - __ ___ - _:Z: ::� _:� -- _: ---------- - , ,_ ,- I I I ­_ ____ -_ \ --- __�� � _ --- ___ - __� - , ,--,'I , __ __ - - ___ __ / ) __ ­� _____ - __- - - __ - ___ - , , - - - ____ - - I - _�_ --- ____ - - � - _____ -_ ____ \ \ I - __ - - __ ___ - - _____ - ____ ____ I - I - - - -- - ___ __ - - - ___ - ___ ___ ___ __ - __ - __ - ---- � __ - - - , - Y_ , - - - -:- - - - I __ - -- - - - - �_ I __ - - t-43 - __ - ____ - - ------- - _____ __ - - - ____ � - - - __ _-__ - - - __ __ - �_�_ ---�_ �- - __ _� - - ,- �) - __ ) \ ) � , / - --- I - - - I : : I I __ , r - - - - - - __ - -- -- - - - - - - _�7 � t �_:_�_�__:��_ - � �__� � - - - - - - - ---------- ___�__ __ - - d W - - - --of --maxirrid -m--Ot,y-.-de-n,�s-_-�-y-��nd-20/0--of opti um / __ - ____ - ----- -- - �- - - - - - - - - � - --- / ,I // , - - -T::T j ____ ___ - - ___ _­_�___ __ - __ __ -- - --� �3� - _--�� -__ - __ - -�],­Al[ ) - - __ / - - ____ - --- --- -_ -_ ____ -_ - - ____ - 9'" ____ lill __� --- - - - - -, � -- I - - ___� - - -_ - - -_ -_ --- z� ----- ---General construction notes for to water I'llill neh - df - ------ ___ --- __� __ I __ __ - - __ ---�_ ______ -__ __ - - , - ___ , ___ - , ------- ___- ---::� _ - - i - __ ____ --- 1, _f - ____ ___ __ - ___- - - --- - �: :_--__::7____ -_ - - - -_ -- - ____ --- - � I - , -0�ms--_atn constr cted fill to be "ffii-R-95% - __� - - NIFRayA. 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I 1, , 1� __ - __ (3--- _/ _____ __ � _V'C��R-S-----_ - --- - -( , - - - - - - I,----- - - - 11 I - - __ __ \ _-, - --- (-, I-', � � ��7 - - - __ - __ __ - - I - �,_ - - - , - ____ I / ) , M - - -------- -1-1 J - , - --- I __ __ __ __ _____ ___ ____ -----_ _____ __ __ __ __ - - )_1 ) - ­_�� - __ - __ - - - / / I I - I , -, - " - � __1 - - _ __ __ __ ___ z:il_ ______ __ __ __ �_ -I---- - - , � ­_ --- ,_ __ -- - - -I- ____ - __ - 11 � 5-111­­� , , , I I- --- __ ,� - 0 1 �­_­:_ I - _____ ___ __ ___ - __� ___ - _­__� ________�__ - � ,-, - -- __ - __<-�, - - eas for church operations as well as employee and visitor parking. ­ - �_--_ - 5_ - __ __­ 11 - __ -S, ' --- __ a� ---- /, � - I �1 � - __ ( _ _____ --- _____ --- __ --- - - - ___ __�, - - 5 _� I __ __ � ____ - / :5�_ , I - - ___1 , " __ - __ - - - ­ - ­ - __ �,_ - - - - ­ I _� _� - __ -,( :___�_' - � ,_ - - --- - --- __ ,- __ � �, �__ - - - / � ___ , - _r. __ -< I_-,- Y � , , �_11 , I � " __ - ) __ --- - - " - - ______� - ______ - 7 - -_ --- - / -, � , I - � j ��_ __ - _� - __ __ ,_-) I/ - - _� - ___ - - __ __ �_ - __ -) __ __ --- - �� - - - I __1 --- __ - ­ --- __ -1 1�_ �_� - � I -0- -1, 1, - __ _�_ __ I - __ I - ____ __ __-, --- - - _,_ ,----- - - - ,___ __ � - __ I - - - - - I ��_ __ ---,---- __ I �, ___ ____ - __ __ - - - ____ - � I I , �--� , - - - --- _', _ __ __��_ �_ --- I ' . . e s ormwa er I � `71 - Y___1_11_ - __ ­ I --) __ - --- - --­7� �-, ; � �J_�_ ____ --- - / I - F , � ---c ­ ­ - - ____ / - �7 - - : , ___ - - / - __ , - i__ - - - - __ d h / 9 ____ ''_ � __ I I �­ ��-­ -,- ( -) 7:!S: __________ I ��>____ , �� �� __-�� __ __ ----- - � I � -------- It-is-expecte -that t e site will eventually include an additional 11VIF4loycl Wood, ,Jr.- - � 1, ��--p,�7-p,--__11___ __ ­�_---_- - i � � - i - I _FY, - 11 - I----- - � , � I _� ­ - -1 __ __ -- � ­­,�� - 11 - ___��_, ___ )_ __ �_ ___ - ­ __ ­ __� � - __-- ------- __ . , � � ) � 4- �_ - __ -1 - I � I )­ ,, c� , , - ,-, __ - I � i - �, ,-,- 1, � I __ ----- _�, , , __ - 1 -09 ­��`� , - , - - __ __ �______ ___ - - __ - _1� , � �_ __ - - I - __ / / / TM -P 79 - , , ( __ - - :, ­�--_ - -, ( - _- I , __ \ _� __� �,�Y � - ___ - - - - `� - - -ma -ment basin, along with drainage improvements have, in � ) `�, , ,,� " __ - - �: __1_, - - _:�____ --__- - � - T -� - __ 6_�, ; -N -�, -- -_ __� --_ __'�_ - � j -_- I --- 1'� _�_ --�----- _- --- - _�� - ------- __­ --- ____ - I / - � � - - ;��-/-_­ ) _� , � __ - I - (__f - IF ­ - -_ - -� -�---� - �-- -, -_ -_ - -_ - - ­, __ ______0 American Leglon \/�, ,X - - - -��--. - __ - -, - , I 0- 1_e�l - � ,�N - __ - - - __� ( _� ) �_ - - ,-, - __ - --�-� �--_-- _- - - �__11_______ - -_-�__�____' ___ - --- _,_ - - � , I � � - - _,�� � ___ - accordance with Virginia E&S Code and Stormwater Management - I __ L___1 � ­ - 1�_ � - - __ __�_ __:�� - - I - , __ I I - I-- __ - __ I - � ��_� ' - - - ' - �:_ - � ___� �__ - ___ �_� - _�_____ - � ___�_ - - �_ - ___ ___ ��__ - �z - �___, - " t, L - - I - - I' � � : ______ � - - - - �'_ �_ - - __ - e_ i � il - - _C_-�_ - :n 7��� ___�� - - I qr__� - _____ ----' - - - -1 - __ - n,t- �a , - ­__�_'! __ _ __ _ _ _ en � __ rma' ts m __ __ - - __ - , to p iliz ' � __ _ __� __ _ __ , - -, , - Z_'_� �`� ` stab ed . a d - - - ­:­ - ---- :� �1­ I �_,_ - - _�_ - �,- �­ " --,-- �-- -----�- _�) __ �_ , - _�_� ;/ � �_ __� !� ___ - li- ji - - , ... � - ___ - I ,_ �, �Zz Z9�_00'1 -: -_ -_ / I �_ r,-,-, � _____ - - - �� , :- --_:� - � - - � - ____ , - , -,77- _;-,,:�7f-'�7_�-,7 -- _7 - �� - - , , - - , � , c - - Y - __ __- - __ - , 03 S24, P 203 � _� �-, '- - _� / - >-------- - -, 0 / � I � --- ( - ; - - --T r � 2,11 -1) - �,_, _ -1 . ,",'- - I - __-, �� � )____ - � - __� � � _� 7�-_-L - , I I - - - - - - ��- - - - - " -, i ____ __ __ il , I __ " -, I 1( I odge, Inc. -��----- - -��-��- - ) _4 - _', - __1 --- __ � - - --- I _--_--_--��--� _�_, __ ­_-, ­_- -,- ­ - -t __ � � --,-____, - -S- ­� I - �_____ __ <_ ­ -1 - __-� ----- - ___�� � _,�_ - - ___ __ __ - -codes, been designed to mitigate the current improvements and this - -, __ - - _�� , __ 1� I-) � � - - - - __ __ - --- � - - I __ - - - ___ - -,�- -- -- - - � ,_ _:j:_ -, , ) �,, , _��_ - - � - -1 � - , - __ I I /_,�_-3_) Z __ � il_________ - - FT ____ � , ­ -( 0 - �, �� I Post 74 , - - - _-, ___ ned C- 7 � I --- _�_____ __ /, ) '' 7,-'-' � 2,--( ) - - __ �__ __ - 0 __ ____ � - 0 - ,> 1 � _� ,�___ -- - � I V _,� - --- - - ,_ --- __ � _77___� _,�_ - - _____11 - / ---� __ � , � � � ; - L_� - i I � l, �, _- i I / / "C \ - I --, __ - - _:�_ �� , _�__ _��_-' --_� _- ---�� __ __ __ __�� I � __ - ,,, - -­ I_ ( _4L_______ ,_ T -P 79- 19 � - - - __ - `_ - - - ::�_ - __ 11 ____ __ _­ - - - - ­ __ additional impervious coverage. This additional impervious area - __ - - - � - __ , --- - - - �_�N __ - - I 1 / - �____ - - - - __ - --- - � I llc� __ __ __ --- __ _-I I I I I � - - / - --::7�> __ ____ --- �_�____ - - COM1776rCial __ ,# I � _,__� ____ / ( - / I � � - � � �_, _ - ____�: - , / US6. � � I - - ___ ��, - I 1� _� __ "R - -1 " � , - - � , 11 , �, � ( ,47r5. 9 ::� �_- -�-- , ) - - __ - � I I ) / I � i -_ ___ ,_ � - I �­ \ -,-- 1� -7ed - ____ �-_�-:>-_ �­ __ ___ __ - - __ ___ - "" __�_ _�_____ _� _____ ___� - ___ -1 - __-, ____ / / - - - - - ___ ;�� , - __ ___ - represents potential future improvements that will be considered � ___ � --i--- � ____7' __ � � ,� , � __ I I � - I - 1, I I I Z91 , -----, � ��,Z��_ - __ - - - �_ - � __ - - __ - � - - __�-- � - \, � � I -- ----- F - � I ___�_ I I , - __ � J_ _- �,_� I) - ____� � __ __1 -:��_�_ - �_ 7� - __ -, - - __ - __ __ __ �_ I - - __ - �-_ � � - - - - - __ - � __ - - I , - - - - __ - - - __ __� - - __ __ �_ I I-',- , � , __ 19, __ - __ , ,-- _-__ __ - __ - - __� - - --- ----- ------ - __ under a future and separate site plan application." - I I - - ­- - ----, -I - --- �, _- _'_ --- - - - - - __ _____ --- I - I \, � 1, I,- /­.- / / - I � - __ , ) __ __ / I - _�_ � � � �__ - __ __- ,-----,I ------ - -i��77�___��_�__ ____ ___ - __ ___ - __ ____ , ,� _- ----- L i ___ ( - ___�__, �� 4_4 -- -- , 1�1 I \ -- - � - �� ` � I � -_ ____ I I ____ � �� - -, - Q - __ `_ _, - - - - - - _� - _��__ - ,_� , � , r-- ,, i � i - I__ - I __ // � \ �_ ___ - - - -- , ____� 10, \ �__!_ � I jf--:fj� , I __ __ ( , )_ _�_ -1 - - - / \ I I � 1� __ --- ,_I�/ / i 11 � , , ; � il � � I � /11 - ,_ - ,r�_'T�T_ - 1-1 - - ­ __ - __ ---- -_ -- __ - __ - __ - - - - - \ - __ i4 I L � � � - __ - /� � __ - - - - __ / I I 'i " _f � Agrl-Drain: mg Bar Guard trash FacA- 36'(Moce,(L?G36) (or approvedi (Agridrain � 1 7-800-232-4 ,742) \ Top of Riser= 393.6 � ,d Min. 2x WQV Req'd = 122.7 C.Y x 2= El Q0=392.22,ill, req'd. E 1 0=3,1L "I 3.5 ft. pond vol E2=391.25 provided = +/-20,000 CY .... OK 2'- 6 " (MIN) 5" Dia. BMP Orifice= ,091.0 , ,d,91.0 . - - - - t - - - - --- - - - - -- �3' - ................. �.. =. � =. __ - =..--.-. �. = ................ ` : , - ..' .-.-* .- : _. , _* _. * 7 .. _ . - . , - . _ . * __,_*._.'_, 7. �,._. � 7 �._. m� 17 _* - - . . - 7 - .- *-, - 7 � .. .. ..3&i - - .-.,-.-. *-,.-. _ - - . . - . . - . . - . . - . . - , . - . . - . . - . . - . . - . I .-. --- - 84 � . - -_,7.,_,._. . I '­­ .....,;_: 7 -. 8 ft. Top Width *', 395.0 1 20' Emergency SpNway ,,, % - - - - - - . % 'Z / / Note.- Cont),actor C�v 1j / 'b / , to fabricate and / 41? / place orifice � / (�i / , trashrack as / shown on sheet 6. OIL/ 20% LEAF MULCH (SAND: 0.02"-0.04", ASTM C33 FINE) 1 ' t 6" NI -1 "_� (MIN) \ 'AASHTO M43, \ 1/2"-l") WRAPPED IN FILTER FABRIC EMOVE SILT AND S,EDIMENT AFTER FINAL PROVIDE PIPES 'STABILIZATION. REPLACE 'WITH LOAM OR GRANULAR WIDTH AT EARTH FILL. 2 0 FT 0. C. 389.0 'L.F. -24"' ADS -N12 @ 2.0% I-- Tx TGalvanized antiseep collars (sealed] to barrel) 6 x 6 x 1.5'Concrete Antifloatation base Stormwater Management Pond (nts) - -1 ____ _41l 1__�� - V - " , �J, ,--( _---- __ __ N 4 ---- _- 11`�N �-, - C, ,___�_ , \N- - ___ �y V, __ _�_, � __ - --- _-_ C �s If " A 4 1 ____ '91 ) I - - / � � - _� _____ " I / , � , -, L 4 The 6" underdrain shall be constructedfrom the stone layer of the biq/111ter to daylight at a minimum slope aff0.5%. The underdrain shall pass two water, fiber optic, and gas lines with a minimum 6" clearance. After construction of*the sediment basin, the contractor shall determine the elevation and diameters ofall utility lines crossed by the underdrain. The contractor shall report back to the design engineer with this data so he may confirm an adequate crossing of the lines. If the underdrain cannot be constructed and a satisfactory solution cannot be improvised in thefield, a stormwater amendment will need to be submitted and a gravel trench built through the embankmentfkom the 386.5 elevation to daylight. -, ,- -1 // 10011/1) Unless otherwise specified on an approved Stormilwater Management Ponal (I - ZU Landscaping Plan, Tree varieties shall be evenly i - "', �,�,� ,,1--1,1,"-, I , __ 1111111111111"... ___ - � I - I __ - - __ distributed: , __ ____ I ­ - -,/ ,­ -",-I _____ ____ I - 'I- jjjj'',� -1 Virginiana (eastern red cedar) t 7�,\ " I �_,, � __�- - -1 __�,-- / "I'll",�'ll""I'll"���,,����,,����,�l�����'ll""I'll��� __ 1, I -1 Juniperius __ - w� � I ... � I -, � __�:I - ­ -11 ----- -- - �, - �� I'll ,��', - ''I I __ � I Red Maple (Acer Rubrum) , I �' '%1, I ` , __ __ ____ __ 11 I , "I , , ,� 1111111111� .................... __ 1�', � __ I - , I ,�, , - -, 1� I - Red Oak (quercus rubra) 1 � -1 __ �_ - - I 11� __ I - I , / __ I -1 -, ................ / - _�_,, / - � i<�� _�Vl _�� � - ) 11 - __ __ "1, , - I /�, \-, y,_ -, , -, All (1" min. Cal.) / , � T, , , - I - _r I-` � 4, "I ______ I I __ p I :�L­ __�_, , - � , I __ i - -, - - I - I - - I -,-, - �� --,�:�,� __ - I I - I / � . �, ,,�� -_�­ 11 __ I 11 Unless otherwise specified on an approved , ,;- I ___ , - - "', _, I __ __ 1� \ ____ � - /,�, /,,/ __ - __ � I __ ___ - =!, , - I __ ___ - Landscaping Plan, Shrub varieties shall be evenly - I :�<_ � __ - - I I - I -1 - _� I - , , __ _�, " : / I ___ -11, I I I distributed: �___ 6 , � _/ I " �,, \ � � Arrowwood Viburnum (Viburnum dentaturn) -7 - - - 1, 11 i Y __ __ I I - I � --- __ __ Winterberry (Ilex verticillata) I - - - - __ I __ , '/ � - - I 1, I'- � - ­ - Common Spicebush (Lindera benzoin) , 1, __ __ - - I - \, I � \ "I ___ --- All (3-4 ft. min. Height at planting) � �' I I 11 , '\ , T_ ­ � I", I L - 11 " - I- �\ I � \ \ '��11'2 * 1-1 I I I - I \ , - . , I- , � - _ - , - - � - 1� 11, � ,_ I \1 , Sediment Forebay to be planted I I , I - I \, - 11", \ \ \ ) ", ", ", "" " " " ­��i_ __ 11, ,\, ) �� - I " - , '\ I \ / - as water Quality Zone 1. Use ii i i I - \ 1 '', \ \ I - . 1, I- I'')— � / - - - Coontail (Ceratophyllum - -1 , ) 1( \ j-'->-:,!' ---,- - \\ - - .11 I ) A/ �-, J-_K�,' -, / -I-- \ I I �_�_,N I � /� - �� j __ , �. F_�_ I � I / __ - 1, -1 demersum) or pond Weed / - "', ____1 \1 , 4��Qfl I I __ � - , \ . __ fil I , t�,�,�/ \ I I � ­ - - ��� � __�� ,�\ - _�-- _r. - . - ____, _j . �_ I _J I , , __ 4- -��/, \� , ___,� - i - " \ I (Potamogeton pectinatus) - � I ,,� I I I I \1� , � 1 . 1\ 1111011 - ------- _____ __ __ I �� -1 � �� ilania/7, _,_ _7 � , ­ ��� lll I 11 I - I I -, __ \ I _1111t;l1l'', ____� _____ --- \ 1W �­�,.__ I - --- __ - - -�7---��-- ------- iiiiii,r, - __ �� , ___ \ ­_ 'I, . __ - ___ Sedim __" ------ kA � - \ ___1. __�__ - - ent Forob--Ew " - ______ __ _____ -G- ___ I - ____ - . __ I I � - ___� - � I \ - - I----- ---------. ___:��_________._____ 35 $ abion berm o-7-- - � I \1 �� I __ --- ____ __ __ t bj!��L I Q1 S , I - - , __ - ___ - ____ T -- �. - � - � -r-_ � - i6��-t�afl-&�zfjer site is I " - \ � __ _____ ___ 1-1 -, -___� , , " ____ - __� ___ ___ E­_-rr,��) :_-f-7\-� , , - -S - --- - - -em­p-.--___ i - I --- , - stable and a s ____T I \ ,q� - , 1�,___, ___ � ___ � :1_______7L_ ___ _____ ------! _­_� I_ --� - __E&S­�ed5gres are Q/_/t � 1�1� � -_ , L __ --- �____�', __ __ 17,�_� I- ___� -------- �77_ _-::�_-- ___----�---r-enTove_d_--- -- \ 1,i/ ____ - I __ --------- 1, _____1 ____ S -------- - ---7::7- - ___� - , ----< ___ - - 0/7z- 1\ , - - G4 ____1 ____ - -_ __ __ I ft ._�__ I�Ll_ 4/ - - ______ 7i___ - ----.-- Pond perimeter to be planted as water Quality Zone 3-4. Use Broomsedge (Andropogon i i i virginianus) around perimeter and Switchigrass (Panicum Virgatum) in and around rip rap channel approaching pond. There shall be no zone 25, or 6 areas within this structure. , NIv Biofilter No.: - I � I I =4 �� �� `1 ��, ,< Drainage Area= M -0 - 1 192782 � � s.f. � 4.4 ac. i 1-- 0 Impervious Area= I'll ­­ � � ­ I I I 11 . � 79489 . I I s.f. (See WPRO Worksheet) t . . .. ..... .. � � � - - _ - , _ � , � � I 11 I . -1 IN LLJ z .9 � I 11 � � Required Floor at: 4.0% i = _j 3180 I s.f. minimum I I � r 1-i �_ �j *5 CN CN - : ­­­ � I � � - I 11 � Required WQV (first 1/2")= � I I � � - 4 3312 � � I � I I ­­ � 11 -1_11111 11 c.f. � 4_1 �_ ,Top Dimensions of biofilter matel = [L - 0 "d- 't 72 I 52 i (L/W= 2: 1) X = 3744 S.f. � � 0 0 I I : I I I - ,Dimensions at RISER ORIFICE= L 1 82 I I ­ - I'll, 11 I'll, x 1 57 = 4674 S.f. 5-: M �� M : Available Volume= 4209 __j c.f. I I Z :�E _Z� I - I - - I I I "I'll 11 11 11 11-11, ''I'll'', I V) ­ WQ V 0, K. I ­ I I I I I I 1-1 -11111 I'll, I I I I I I 11 ;, Floor 0. K. � _$i -J94.0 > < "�� -- ­ "I'll 11 ­­ 11 � I 11 :� 15 : � : : � I I I "I'll I I I 11 I I "I'll'' I I I I , "", 1�1 " 10 ff Z I � : I � � I'll, - � ­ � - : .0 � � . I � � - I ­ ­ 11 I I I I 111 I I �, \," ,;0 \1 0 I Riser Orifice= � k_ .0 I I ", (p, \ �0 ___ � I-_ � _ 1 I � I � 11 � Top of RISER-- I � I 393.6 - 11 ­­ � I I I � ­­ � � 11 � I'll, � I � � ,\ 0 \ (� Q I i i : I I � : 389.0 'L.F. -24"' ADS -N12 @ 2.0% I-- Tx TGalvanized antiseep collars (sealed] to barrel) 6 x 6 x 1.5'Concrete Antifloatation base Stormwater Management Pond (nts) - -1 ____ _41l 1__�� - V - " , �J, ,--( _---- __ __ N 4 ---- _- 11`�N �-, - C, ,___�_ , \N- - ___ �y V, __ _�_, � __ - --- _-_ C �s If " A 4 1 ____ '91 ) I - - / � � - _� _____ " I / , � , -, L 4 The 6" underdrain shall be constructedfrom the stone layer of the biq/111ter to daylight at a minimum slope aff0.5%. The underdrain shall pass two water, fiber optic, and gas lines with a minimum 6" clearance. After construction of*the sediment basin, the contractor shall determine the elevation and diameters ofall utility lines crossed by the underdrain. The contractor shall report back to the design engineer with this data so he may confirm an adequate crossing of the lines. If the underdrain cannot be constructed and a satisfactory solution cannot be improvised in thefield, a stormwater amendment will need to be submitted and a gravel trench built through the embankmentfkom the 386.5 elevation to daylight. -, ,- -1 // 10011/1) Unless otherwise specified on an approved Stormilwater Management Ponal (I - ZU Landscaping Plan, Tree varieties shall be evenly i - "', �,�,� ,,1--1,1,"-, I , __ 1111111111111"... ___ - � I - I __ - - __ distributed: , __ ____ I ­ - -,/ ,­ -",-I _____ ____ I - 'I- jjjj'',� -1 Virginiana (eastern red cedar) t 7�,\ " I �_,, � __�- - -1 __�,-- / "I'll",�'ll""I'll"���,,����,,����,�l�����'ll""I'll��� __ 1, I -1 Juniperius __ - w� � I ... � I -, � __�:I - ­ -11 ----- -- - �, - �� I'll ,��', - ''I I __ � I Red Maple (Acer Rubrum) , I �' '%1, I ` , __ __ ____ __ 11 I , "I , , ,� 1111111111� .................... __ 1�', � __ I - , I ,�, , - -, 1� I - Red Oak (quercus rubra) 1 � -1 __ �_ - - I 11� __ I - I , / __ I -1 -, ................ / - _�_,, / - � i<�� _�Vl _�� � - ) 11 - __ __ "1, , - I /�, \-, y,_ -, , -, All (1" min. Cal.) / , � T, , , - I - _r I-` � 4, "I ______ I I __ p I :�L­ __�_, , - � , I __ i - -, - - I - I - - I -,-, - �� --,�:�,� __ - I I - I / � . �, ,,�� -_�­ 11 __ I 11 Unless otherwise specified on an approved , ,;- I ___ , - - "', _, I __ __ 1� \ ____ � - /,�, /,,/ __ - __ � I __ ___ - =!, , - I __ ___ - Landscaping Plan, Shrub varieties shall be evenly - I :�<_ � __ - - I I - I -1 - _� I - , , __ _�, " : / I ___ -11, I I I distributed: �___ 6 , � _/ I " �,, \ � � Arrowwood Viburnum (Viburnum dentaturn) -7 - - - 1, 11 i Y __ __ I I - I � --- __ __ Winterberry (Ilex verticillata) I - - - - __ I __ , '/ � - - I 1, I'- � - ­ - Common Spicebush (Lindera benzoin) , 1, __ __ - - I - \, I � \ "I ___ --- All (3-4 ft. min. Height at planting) � �' I I 11 , '\ , T_ ­ � I", I L - 11 " - I- �\ I � \ \ '��11'2 * 1-1 I I I - I \ , - . , I- , � - _ - , - - � - 1� 11, � ,_ I \1 , Sediment Forebay to be planted I I , I - I \, - 11", \ \ \ ) ", ", ", "" " " " ­��i_ __ 11, ,\, ) �� - I " - , '\ I \ / - as water Quality Zone 1. Use ii i i I - \ 1 '', \ \ I - . 1, I- I'')— � / - - - Coontail (Ceratophyllum - -1 , ) 1( \ j-'->-:,!' ---,- - \\ - - .11 I ) A/ �-, J-_K�,' -, / -I-- \ I I �_�_,N I � /� - �� j __ , �. F_�_ I � I / __ - 1, -1 demersum) or pond Weed / - "', ____1 \1 , 4��Qfl I I __ � - , \ . __ fil I , t�,�,�/ \ I I � ­ - - ��� � __�� ,�\ - _�-- _r. - . - ____, _j . �_ I _J I , , __ 4- -��/, \� , ___,� - i - " \ I (Potamogeton pectinatus) - � I ,,� I I I I \1� , � 1 . 1\ 1111011 - ------- _____ __ __ I �� -1 � �� ilania/7, _,_ _7 � , ­ ��� lll I 11 I - I I -, __ \ I _1111t;l1l'', ____� _____ --- \ 1W �­�,.__ I - --- __ - - -�7---��-- ------- iiiiii,r, - __ �� , ___ \ ­_ 'I, . __ - ___ Sedim __" ------ kA � - \ ___1. __�__ - - ent Forob--Ew " - ______ __ _____ -G- ___ I - ____ - . __ I I � - ___� - � I \ - - I----- ---------. ___:��_________._____ 35 $ abion berm o-7-- - � I \1 �� I __ --- ____ __ __ t bj!��L I Q1 S , I - - , __ - ___ - ____ T -- �. - � - � -r-_ � - i6��-t�afl-&�zfjer site is I " - \ � __ _____ ___ 1-1 -, -___� , , " ____ - __� ___ ___ E­_-rr,��) :_-f-7\-� , , - -S - --- - - -em­p-.--___ i - I --- , - stable and a s ____T I \ ,q� - , 1�,___, ___ � ___ � :1_______7L_ ___ _____ ------! _­_� I_ --� - __E&S­�ed5gres are Q/_/t � 1�1� � -_ , L __ --- �____�', __ __ 17,�_� I- ___� -------- �77_ _-::�_-- ___----�---r-enTove_d_--- -- \ 1,i/ ____ - I __ --------- 1, _____1 ____ S -------- - ---7::7- - ___� - , ----< ___ - - 0/7z- 1\ , - - G4 ____1 ____ - -_ __ __ I ft ._�__ I�Ll_ 4/ - - ______ 7i___ - ----.-- Pond perimeter to be planted as water Quality Zone 3-4. Use Broomsedge (Andropogon i i i virginianus) around perimeter and Switchigrass (Panicum Virgatum) in and around rip rap channel approaching pond. There shall be no zone 25, or 6 areas within this structure. , NIv --cr - - 0 (_�, � Z� :�c V) =4 �� �� `1 ��, ,< ?_1 __j - 1 ,.;4, >_ �� XSA 5i F4 M -0 - 1 61 1z, ==5 -�� . L� 1-- 0 (D § < < Ln C-4 Lj 0 F__ 0 I- IN LLJ z .9 C� = _j = _j �� :D 1-i �_ �j *5 CN CN - , U) 0 __D C� --D 4_1 �_ d = [L - 0 "d- 't S; 0 C 0 0 L 2! P 5-: M �� M Ld = Y 0 UJ U 0 I--- Z :�E _Z� k_� . V) < z E 0 U-) < 3: < Lj > < "�� -- S-_ :� 15 C-- Q) ,2 0 I- 66 Z ff Z _q) E _�� El _U (� Q Q (13 �b -,n -,,) ��: �z Z I- � , L� Z Q I_- < CS _�, E E F: - > C) U C� 1 zs� (� Cf) V) of C) ,_ZZQ :!� Z�� _(� lz:Q Q) �) S; ,_�< _Z< ,_Z< _Z< ,<� * M ,a) Q q) Q) I LI) .S .S i S: �Q �� �Q �. _V) S _(n S; 1 &� 1 [2 1 ,3" - - LI, j�A I A , NIv --cr - - 0 (_�, � Z� :�c �f �� =4 �� �� `1 ��, ,< ?_1 __j - 1 ,.;4, >_ �� XSA 5i F4 M -0 - 1 61 1z, ==5 -�� . L� X_' 0 0 C 0) a) N .. >_ 5-: 0 U U) . IN Z . Q) N r- if) M M 0 (D § < < Ln C-4 Lj 0 F__ 0 I- IN LLJ z Ld _1 C� = _j = _j �� :D 1-i �_ �j *5 CN CN - 0 _D 0 __D C� --D 4_1 �_ d = [L - 0 "d- 't 0 C 0 0 L 2! 0) 6� 0) 5-: M �� M Ld = Y 0 UJ U 0 I--- Z :�E Z :�i� k_� . 0 M < z E 0 U-) < 3: < Lj > < "�� -- CD < ­` --- :� 15 L. J LLJ 0 �-- ,2 0 I- 66 Z ff Z 0 C a) N �_ CD U IN 0) U U) . IN Z . Q) N r- if) = > n n (D § < < Ln C-4 F_ Jc _> LI) r - _l = 1� I I Ld _1 - -1 0 = = cy) CT) () 1-i �_ �j *5 CN CN 61) = 0 V) I I - c) 4� Q) L_ Co . _14-4- :3 0 6 - IN-) r') = [L - 0 "d- 't 0 C 0 -1-1 = U) 0 L_ . - ILL- I eel W _Il C Q) E Q) __j U-) W 0 __j < C i �- Z 0 11 :�i 0) �1� .,� �_ Q) Q) 9 Ica 0) 9 1�14 � d _�-Q 9 Q) 5 �� a �_ lc� �) r11 11 F14 ` d 1-3 I C�l �z .0 CJ Ici U �_I 75 4 U Q) r_l _+-� Q) C/) �_I �_I (1� . r --j N �� ct �-� (1) 4 r-___1 i Q). r-� > 4 M _+� 0 -I,-3 LI --i -4-J 0 0 r___� �� (`:5 4 U 0 CN - -A 0 CC) - 0 _;I_ - - - 0 _Q_ 10 IN -0 r 11% IF 0- - 0 co C-0 M 0 ff) , I M �t �: N M N 't 0 . . = .2 X 0 M ]E - C LL C: CD .�_ LO (Z > - 0 N r- ,:� , 13 a) � 0 -0 - M (-D LL M ::� . 1`_� ,'I- M ,-I- 17- 0- 0 C . 171 �_ . �5 -1- U - .E Q) �, -�:: .cn 0 0 E 0 0 n C :;� C U > 14- . 0 00� >1 4� C :3 0 0 I SHEET No. 5 OF 6 --I DWG. NO. 07-020 s� General construction notes for Stormwater Management plans 1. All dams and constructed fill to be within 95% of maximum dry density and 2% of optimum moisture content. All fill material to be approved by a geotechnical 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, 3. For temporary sediment traps or basins which are to be converted to permanent stormwater management facilities; conversion is not to take place until the site is stabilized, and permission has been obtained from the County erosion control inspector. B i of i t to r Notes: 1. The F-, 1p, Soil Mix shall be "Luck; Stone Bio -filter Mix" or a tested equivalent approved by the county Engineer. 2. Bio'►filters must not be installed/converted until the site is determined to be adequately stabilized by the erosion contriol and water resources inspectors. I The contractor shall contact the water resources inspector 24 hours prior to backfilling the biofilter and request an inspection and approval of the underdrain installation and the soil mix. Unless otherwise specified on an approved Landscaping Plan, Tree varieties shall be evenly distributed: Juniperius Virginiana (eastern red cedair) Red Maple (Acer Rubrum) Red Oak (quercus rubra) All (1E' min, Cal.) Unless otherwise specified on an approved Landscaping Plan, Shrub varieties shalll be evenly distributed: Arrowwood Viburnum (Viburnum dentatum) Winterberry (Ilex verticillate) Common Spicebush (Lindera benzoin) All (3-4 ft. min. Height at planting) Ili lirrient Par t' stgbi I ized Inflow�,�+ � � � �Stab it i zed >�r� rf low Channel In Sediment Forebay Pip -Rap , Inlet Channel ` I Pratecrio n '` ~ .}'r l No all 'dater Surface onstr u ction/W intent nae Act a �{Approved Sediment SpofllI__A N kms] (with proper eros an � and sedi'meni co No Sia r3Ie Fxisting Grade'' ,, Normal Water Surface -- "`�- /Normal Wcter Surface ,�----. �-� Elvati�an--�Far�eba Proposed--- -�_ �.�� Elevation—Constructed We, rats e a � � .�. � — >_ .-�. , 777 RipRap Inllet� Channel Protection ALTERCATE SECTION -AL No Scale Stabilized Overflow Spillway ( abicr Basket Biofilter Computations Albemarle County Water Protection Ordinance Plan: Cville 1st Church of the Nazarene Water Resources Area: Rural Land Preparer: JLT Date: 03 -Nov -09 Revised ---- fl t-. wide_-gra_vel access---- -- ''-_ rd:(b (b "---c-r_u s h e r run - / % t e a -x -_g rad b e �—crn j' o max cross—sI-o- e e 5 --- ,� I AA tc ��YY TO/P=372.5;VIDOT �� >t >t >• riiiQii�tiiilil Inv�_ 36.1 7 ♦� 10 top too 170 Turni,- tlet'Protectio �I. I th 12 n' La= 5-ft.i Vyidth Upper= )Width -Lo - n_ Secl meat Trap Retrofit (7 - or OUTLET 6" NON -PERFORATED PROTECTION PVC PIPE TO DAYLIGHT -- W /--OVERFLOW PROTECTION STONE WEIR Project Drainage Area Designation SIDE SLOPE REGRADED Trap No. 1 Retrofit 3:1 SIDE SLOPES (MAX) _ Biofilter No.: 1 smE SAND/3n 70PSDIL/ (MIN) __ __ _ __ _ _ _ _ _ _ _ _ _ 2LR LEAF YULCH _ (SING: Drainage Area= 129011 s.f. Imperviouis Area= 7920 s.f. (See WPRO Worksheet) Cal.) o :Required Floorat 2.5/0 198 s.f. minimumPROTECTION/ INLET Red Oak (quercus rubra) (1" min. ENERGY Required WQV (first 1/2"). 330 c.f. DISSIPATER Top Dimensions of biofilter material= 14 - - .. x 28 392 S. f. (L/W- 2:1) min. Height at planting) Dimensions at Bottom of Weir= 20 x 34 = 680 S. f. / Available' Volume= 804 C. f. recommendations (Tables 3.11.7A & 8) and cross-referenced with Albemarle County approved WQV O.K. Floor 0. K. plant list. i Forebay (design (0.10"-0.25" per acre of impervious) O Required Volume= 79 C. F. (Imperv. Area x 0.12" ( 12) 0 I At 1 ft design depth= 79 S. f. - at full width of floor= 14 ft. Q Yeilds barrier 6 ft. from upper end of retrofit Biofi[ter TTop Elev.= 371.5 Bottom otf weir stone= 373.0 Top of poinding berm= 374.5 Max Eleviation of 2 yr. event= 372.5 OK :Max Elevration of 10 yr. event= 372.6 OK R d N f P l t 10 1000 f- 4 equlre o. o an s ( per s..) - SIDE SLOPE REGRADED TDP OF WHI BERM TO 3:1 (("0 Shrubs 3 smE SAND/3n 70PSDIL/ (MIN) __ __ _ __ _ _ _ _ _ _ _ _ _ 2LR LEAF YULCH _ (SING: Trees 1 Tree varieties shall be Juniperius Virginiana (eastern red cedar) (1" min. Cal.) evenly distributed: Red Maple (Acer Rubrum) (1" min. Cal.) Red Oak (quercus rubra) (1" min. Cal.) Shrub varieties shall be Arrowwood Viburnum (Viburnum dentatum) (3-4 ft. min. Height at planting) evenly distributed: Winterberry (Ilex verticillata) (3-4 ft. min. Height at planting) Common Spicebush (Lindera benzoin) (3-4 ft. min. Height at planting) (Note: Trees and shrubs are selected based on Virginia Stormwater management Handbook i O recommendations (Tables 3.11.7A & 8) and cross-referenced with Albemarle County approved O plant list. in O CLEAN—OUT (nP) — Sediment Trap Retrofit (no sole) 4"-6" PERFORATED PVC PIPE STONE WEIR 4"-6" NON -PERFORATED PVC PIPE ® 0.5% MIN, SLOPE TOP OF BERM V-6" i L LOAM OR GRANULAR EARTH FI LL 4"-6" PERFORATED PVC PIPE @ 1% MIN, SLOPE STORM WATER CHANNEL CLEAN-OUT W/WATERTIGHT J1 3 SIDE SLOPE REGRADED TDP OF WHI BERM TO 3:1 (("0 0 2'-S' �__ _ _ -_.............__ smE SAND/3n 70PSDIL/ (MIN) __ __ _ __ _ _ _ _ _ _ _ _ _ 2LR LEAF YULCH _ (SING: ASTM CI ORIGINAL 9LT TRAP SIDESLOPE DcEa�RDRNN GRAN]. U�N�O MAD. �V.. id2, , N1iPPPEO PRUIADE RPM N Fl FA ADROSS ENnRE IMDIN AT W FT O.C. REUDAE SILT AND SEDIMENT AFTER FINAL 0 STA9lPATNYi. REPME NMN LOAM OR GRANULAR EMM Fll STONE WEIR 4"-6" NON -PERFORATED PVC PIPE ® 0.5% MIN, SLOPE TOP OF BERM V-6" i L LOAM OR GRANULAR EARTH FI LL 4"-6" PERFORATED PVC PIPE @ 1% MIN, SLOPE STORM WATER CHANNEL CLEAN-OUT W/WATERTIGHT J1 3 U Cno oE (D 0 14- 0 _1 -N 0 U SHEET NO. 5A OF 6 DWG. N0. 07-020 �3I A 0 CD�� 0 +J {T\J V 0 �u 0 E N J Q 0 0) Z C: Q� r i O Q) O M in O 0 a W ®H 0 I N LLJ Z Q 2 _I T —1 Q U U o o � Z CP M % m W U Y O Ld CD z c U c � U ti O a� v co w V) 0 > w E CDj w W n- L \ w CO ZO E 9 N Q � N Q C N N Z.� N NhL s O 0 4QLnN z->�I� o LLJQo a W Q U s W> N N CZ) _C:0V)I I C) Cf) T-,�� o 0 LnLri �o-�� T- U �d U z U Cno oE (D 0 14- 0 _1 -N 0 U SHEET NO. 5A OF 6 DWG. 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Install perimeter E&S controls such as Silt fence, diversions, and Sediment traps. 2. Clear and grub additional roadway areas 3. Rough grade roadway, install culverts 4. finish grade streets 5. shape ditches 6. Install base stone 7. Install ditch linings 8. Install Outlet protection 9. Seed & stabilize site 10. Remove temporary and perimeter controls Riser Orifice Trash rack Calculations: Orifice Area= 19.6 Sq.in. Rack face= 25 sq. in. Rack edge= 20 sq. in. ESS Symbol L e_qen d 4% 0 OutletFro2tection Sediment Forebay Design Criteria: 01 N Constructlion L_ 0 0 Entrance Design Criteria= 0.25 in. storage per acre of imp. areaEMERGENCY 4-1 �E - I @67c.y.per= 296 C.Y. (8006 0.) Wet storage n/o, G Sedimend Basin a e -IN (CIO Culvert Inplet Protection W 1-� Inflow to Basin 1*_ . . I Divelrs/om Design Depth = 3 ft. 0 Dike .................... 0 Silt Fence - ... .-.-.-.-.-,. n/o, Limits of Provided Volume= 1800 c.f.. .. .K. TOP OF 52 Consttuottion EMBANKMENT- -- Riser= 36" CMP fitted for connection to outlaill pipe Top Elev.= 393.0 ( Blanket & matling Bottom Elev= /- . (7-2) n/o. 0 Fermane,,n( RISER WITH — - — . 0 Seeding 0 0 Tree Protection b1l. 0 Rack Fill Chcck SEDIMENT BASIN OUTLET Dam FOREBAY E Dewatering Orifice Calculations: Recommended Dewatering System for Sediment Basins Provide Adequate Strapping Polyethylare Cap . . . - . - Depth . . . - . - Perforated polyethylene drainage tubing. Tack Welcl-,,%*b Z: : Z: Dia. as called. 1 _ . . Wet Fernco Style Coupling Storage Dewatering Orifice Schedule 40 Steel Stub 1 -ft. Min. Dia- as called. Pond Riser Note: With Concrete Riser, Use PVC Schedule 40 Stub for dewatering orifice. Note: Drainage tubing to comply with ASTM F667 and AASHTO M294 I Q), Irl IA Sediment Basin Design Criteria. Sediment Forebay Design Criteria: 01 N , L_ 0 In Drainage area= 4.43 ac. x 134 c.y. per = 593 C.Y. Min. Total storage Design Criteria= 0.25 in. storage per acre of imp. areaEMERGENCY 4-1 �E - I @67c.y.per= 296 C.Y. (8006 0.) Wet storage SPILLWAY .< .,:il ,b - @ 67 c.y. per = 296 C.Y. (8006 c.f.) Dry storage Impervious tributary area- 27% or 79,50M s.f. equivalent Q -2 ` :, Required Vol.= 1084 C.F. (impery. area: x 0.25'712) . . o . . .1 . . Inflow to Basin < . . I 02= 12.9 ds Design Depth = 3 ft. . . Qlc� 17-5cfs Side slopes of 2:1 V Q25= 20.2 ofs Median area= 600 s.f. Q100- 24.3cfs Provided Volume= 1800 c.f.. .. .K. TOP OF 52 0 EMBANKMENT- -- Riser= 36" CMP fitted for connection to outlaill pipe Top Elev.= 393.0 BARREL Outfall Pipe= 50L.F.-24"ADS-NI2@2.0% Bottom Elev= /- . Emergency Spillway= 20 ft. grass lined I . . r Z . . Anti -floatation Plate= 72" x 72" x 18" Concrete RISER WITH — - — . 0 Trash Rack: (see note 2) TRASH RACK . .. 1. Dewatering Device: 6" Dia. pipe (See detail on Narrative) SEIDIMENT S TABLiLl7ED Orifice Size: 3" Dia. (Convert to 5" at installation ofbiofilter) SEDIMENT BASIN OUTLET Anti -Seep Collars: 36"x36" sealed watertight to barrel FOREBAY E Dewatering Orifice Calculations: Q h=(393.6-391)/2= 1.3 Gabion I \_1' S= 11,195 C.F. Baskets W = Q= 11 195/21600=0. 52 cfs W J 0 k- QjI A- Q/(64.32 x h/2)10.5 x 0.6 PLAN 0 M =OM5 s -f- required 0- U5 < _Q) d= 2 x (A/3.14159)A0.5= +/-3" - Top Width El Per VESCH add min. 2"... use 6" perf. pipe Of I__ I . EMBANKMENT LLJ E Z TRASH RACK EMERGENCY STABILIZED WITH Elevations: SPILLWAY VEGETATION Anchor base= 388.5 _\ Bette of excavated pond =387.0 CLEANOUTELEVATION j .4-4.4. MARK O. min. .. .� �FREEBOARD -.;. --*4, _t2l 11 Outfaml= 389.0 ,... . -.*.•., . I 0.5' MINIMUM top of berni ENGINEERED emergency spillway -394.0 Dewatering Elev.. NLETEEE'UEIJ­rI*LI_ Q Riser To p� 393.6 = ELEV. PLACED A-1AY�RS Q� Orifice Elevation= 391.0 = " COMPACTEDWet -_ - __j Dewatering Elevation= 392.5 _!!.,� ------11-11_ ORIFICE ELEV. - Ill M Storage Elev.= 391.0 (+IA69 C.Y.) OK POND BOTTOM b� Dry Storage= 393.0 (+IA14 C.Y.) OK NewIffl, . Dimensions: (see grading plan for shaping) �� Z - — I Outlet Protection: - Anti Seep Collar(s) d50= 6 in. .<0 �_ depth= 12 in., ANTI -FLOTATION �/ SECTION Outfall Pipe La- 12 ft. PLATE Q) Width Upper= 5 ft. _(0 S; Width Lower= 15 ft. NOTES: Embankment Fill slopes= 3:1 1. THIE SEDIMENT BASIN WILL BE CONVERTED TO A PERMANENT WATER QUALITY Internal Pond slopes= 2:1 STRUCTURE (EXTENDED DETENTION WITH BIOFILTER). 2. Tra3sh Rack to be appropriate diameter Agirldrain brand (1-800-232-4742 Heavy Duty Bar E Guardl). - E: 3. Risser to be Corrugated metal pipe welded to the anchor -plate and fitted with outlet flange to connect outlet pipe at prescribed elevation. 4. See detail for specifics of dewatering device. C) E SEDIMENT BASIN (Ints) _a� -_ -2 Q), Irl IA C: 01 N L_ 0 In :11 4-1 �E - I = > n n .< .,:il ,b - . I �� Q -2 ` :, _,- = Z .- _+_ - I I A ;,- E- P4 Pq 2 - < S 0 u- 0 - LJ >0 CN N - (n 11�' I V 0) = a- - 0 ¢ � ;;-: 52 0 0 M M 0 Lj C) I__ 0 ­__ N LIJ Z � I -E _j = _j <t D M O 3 0 __D U) - !,_ E a Q L Z I 6� U , �� M �� M W = y 0 W J 0 k- QjI Z U � 0 M < Q. E 0- U5 < _Q) > < "' --, C < --I --, El La LJ I__ 0 Of I__ I . =) cn Z LLJ E Z E _t2l Q� Q Q� M b� -,n -,,) �: �� Z r- C__ .<0 �_ 0 17:1 Q) Q) _(0 S; Q) (i E ,-- - E: - > C) E E _a� -_ -2 q . q 6 C) Ij !�, �11 rl� ( -) r__ QQ) C� C) e U q f) ,S: '_:,� '-z,Q ,_�< :H; q [i a) QU Q) 1J.) Q) q) - tn .v) �� ,�Q. V) � S: �Q �. �� -v) S . . . . . . ? Lu I- � < MOM Q - - o cz) r") Q), Irl IA C: 01 N L_ 0 :11 4-1 �E - I = > n n .< .,:il ,b - . I �� __3 M , ` :, _,- = Z .- _+_ - I I A ;,- E- P4 Pq 2 - < S 0 u- 0 - LJ >0 CN N -'Yo 0 11�' I V 0) = a- - 0 ¢ � ;;-: 52 0 0 M M 0 Lj C) I__ 0 ­__ N LIJ Z � I -E _j = _j <t D O 3 0 __D C) --D - !,_ 0 a L Z I 6� U , �� M �� M W = y 0 W J 0 k- I Z U � 0 M < Q. E 0- U5 < 3. < < LLJ > < "' --, C < --I --, i i5 La LJ I__ 0 Of I__ I . =) cn Z LLJ E Z Q), C: 01 N L_ 0 0 0') IN 0U) - N - (1) (N f- _0 Z- = > n n .- Q), 3: < < I N = > in r- 4- _,- = Z .- _+_ - I I Ld _j W 4- M 0) LC) CO < .0 i 0 = = CY) CY) C) 0 - LJ >0 CN N Cf) = U, I I (L-) ,cn �� -a, -;d- ,j- 13 I o -- n I") = a- - 0 ¢ � U I-- 0 +_ _I_ - V) 0 L_ .- L, I L41 C U - [1- -A 0 00 - 0 N —0 W = I 0 C .I -I- u *E 6 0�_ .cn 0 E 0 0-0 C: — C < 0 > . 0 cr� >1 C: :3 0 0 SHEET NO. 6 OF 6 1 DWG. NO. 07-020 Set the stakes. 3. Staple filter material to stakes and extend it into the trench. / 2' upsiope along "thxe 4linerench of the stakes 4. Backfill and compact the excavated soil. Sheet Flow Installation Drip Line Ground Sul Points "A" should be higher than Point "B" Drainageway Installation Sit Fence InstclIation TREE PR❑TECTI❑N - FENCING SIDE VIEW 6' Max r POST AND FENCE DETAIL_ N❑TES+ 1 , The fence shall loe located a minimum of 1 foot outside the drip line of the tree to be saved and in no case closer than 5 feet to the trunk of any tree, 2 Fence posts shall be either standard steel posts or wood posts with a minumum cross sF=ctional area of 3,0 sq, in, 3, The fence may be either 40" high snow fence, 40" plastic web fencing) or any other material as approved by the engineer/inspector, REFERENCE STANDARD DWG, NO., Project DrS IL -690 Designed Date. Checked Date _. NR%SHEET 1 OF 1 Approved Date _ Naturd ResaDATE 4-7-94 O N a rr IV MANAGEMENT STRATEGIES aAreas which are not to be disturbed shall be clearly marked by flags, signs, etc, at the owner's discretion, (E-21 The Contractor shall be responsible for the installation and maintenance of all c erosion and sediment control measures, PROJECT DESCRIPTION: The purpose of this project is the development of a Church facility and associated permanent stormwater management facility. Approximately ER❑SI❑N AND SEDIMENT CONTROL MEASURES+ 6.8 acres are scheduled for disturbance. Measures shown on the accompanying drawings are to be installed in N 0) accordance with the specifications and standards of the Virginia Erosion and EXISTING SITE CONDITIONS: Sedimentation Control Handbook, 3rd Edition 1992. The topography of the site is rolling within all reaches. The area landcover is partly wooded along the perimeters with most interior areas as open �o field.. MAINTENANCE+ 00 In general, all Erosion and Sediment control measures will be checked ADJACENT AREAS: daily and after each significant rainfall. The following items will be checked in particular: The project area is bounded by Rt. 22 to the South, 1-64 (EBL) to the north and east and by unimproved or rural properties on all other sides. a) shoulld sediment basins or traps be required, they will be cleaned and maintained CD according to the Virginia Erosion and Sediment Control Handbook, SOILS: b) All giravel outlets will be checked regularly for sediment buildup that Soils in this area are generally described as Davidson Clay Loams(23C) in the higher elevations and Manteo Channery silt loams (51B) in the will prevent drainage, If the gravel is clogged by sediment, it shall be lower elevations. removed and cleaned or replaced, U c) All silt barriers will be checked regularly for undermining or deterioration CRITICAL AREAS: of the fabric and repaired as required, Sediment shall be removed when Critical areas are those (such as creek channels) subject to concentrated stormflows or subsurface springs. In topography such as this, the level, of sediment deposition reaches half way to the top of the barrier, source control of sediment is critical to erosion control. Contractor should use care in scheduling and sequencing to minimize excavation exposure in d) All Seeded areas will be checked regularly to see that a good stand is these areas.maintained, Areas should be fertilized and reseeded as needed, C� e) The (acceptance of approval implies that the applicant has agreed to use EROSION AND SEDIMENT CONTROL MEASURES: the materials as indicated on the Erosion Control Plan, attachment Measures shown on the accompanying drawings and in this narrative are to be installed in accordance with the specifications and standards of and samples submitted, Any change to the approved design or materials will the Virginia Erosion and Sedimentation Control Handbook, 3rd Edition 1992. require approval by the Engineer, CALCULATI❑NS+ STABILIZATION PACTICES Nome, (Adapted from State Minimum Standards as effected, 13 SEP95). Standards listed here, are in summary form. In cases of question or controversy, z the Virginia Regulation VR 625-02-00 shall govern. PERM, SEEDING SPECIFICATI❑NS1 (All units in Pounds per acre) m Feb, L6 thru April 30 MS -1 Permanent or temporary soil stabilization shall be applied to denuded areas within seven (7) days after final grade is reached on any portion Kentucky 31 Fecue-- 128 lbs.; Red Top Grass- 2 lbs,; Annual Rye- 20 lbs, of the site. Temporary soil stabilization shall be applied to denuded areas within seven (7) days to Fertilize at 1,000 W. per acre or as determined by soil test denuded areasthat may not be at final grade, but will remain dormant for longer than 30 days. Permanent stabilization shall be For Slopes steeper than 3:1, add 20 lb, Crownvetch applied to those areas which will remain dormant for longer than one year. May 1 thru August 15: MS -2 Soil stock piles shall be stabilized or protected with sediment trapping measures. The applicant is responsible for the temporary protection Kentucky 31 Fecue- 128 lbs,; Red Top Grass- 2 lbs,; Foxtail Millet- 20 lbs. and permanent stabilization of all soil stockpiles on site as well as soil intentionally transported from the site. Fertilize at 1,000 lb, per acre or as determined by soil test MS -3 A permanent vegetative cover shall be established on denuded areas not otherwise stabilized. Permanent vegetation shall not be considered For Slopes steeper than 311, add 20 lb, Crownvetch established until a ground cover is achieved that, in the opinion of the local program administrator, or his agent, is uniform, mature enough to Aug, 16 thru Oct. 31: survive, and will inhibit erosion. Kentucky 31 Fecue-- 128 lbs.; Red Top Grass- 2 lbs,; Annual Rye- 20 lbs, MS -4 Sediment basins and traps, perimeter dikes, sediment barriers and other measures intended to trap sediment on-site must be constructed as Fertilize at 1,000 lb. per acre or as determined by soil test a first step in grading and be made functional before upslope land disturbance takes place. For Slopes steeper than 3+1, add 20 lb, Crownvetch MS -5 Stabilization measures shall be applied to earthen structures such as dams, dikes and diversions immediately after installation. Nov, 1 thru Feb, 15: MS -6 Surface runoff from disturbed areas that is comprised of flow from drainage areas greater than or equal to, three (3) Kentucky 31 Fecue- 128 lbs,; Red Top Grass- 2 lbs,; Winter Rye- 20 lbs, acres, shall be controlled by a sediment basin. The sediment basin shall be designed and constructed to accommodate the anticipated sediment Fertilize at 1,000 lb, per acre or as determined by soil test loading from the land disturbing activity. The outfall device or system design shall take into account the total drainage area flowing through the For Slopes steeper khan 31, add 20 lb, Crownvetch disturbed area to be served by the basin. MS -7 cut and fill slopes shall be constructed in a manner that will minimize erosion. Slopes that are found to be eroding excessively within one year of permanent stabilization, shall be provided with additional slope stabilizing measures until the problem is corrected. GENERAL REMARKS: MS -8 Concentrated runoff shall not flow down cut or fill slopes unless contained within adequate temporary or permanent channel, flume or slope 1. Lime shall be applied at 3 tons acre unless otherwise noted, drain structure. MS -9 Whenever water seeps from a slope face, adequate drainage or other protection shall be provided. per 2, Fertilizer shall be Type 10-20-10 unless otherwise noted, MS -10 All storm sewer inlets that are made operable during construction shall be protected so that sediment -laden water cannot enter the conveyance system without first being filtered or otherwise treated to remove sediment. TEMP, SEEDING SPECS, MS -11 Before newly constructed stormwater conveyance channels are made operational, adequate outlet protection and any required temporary or For Planting Dates of Sep. 1 to Feb, 15 permanent channel lining shall be installed in both the conveyance channel and receiving channel. Use a 501/50 Mix of Annual Rye and Winter Rye MS -12 When work in a live watercourse is performed, precautions shall be taken to minimize Encroachment, control sediment transport and at 50 t;o 100 lb. stabilize the work area to the greatest extent possible during construction. Nonerodible material shall be used for the construction of causeways and per acre. cofferdams. Earthen fill may be used for these structures if armored by nonerodible cover materials. For Planting Dates of Feb, 16 to April 30 MS -13 When a live watercourse must be crossed by construction vehicles more than twice in any six-month period, a temporary stream crossing Use Annual. Ryegrass at 60 to 100 lb, acre, constructed of nonerodible material shall be provided. per MS -14 AIV applicable federal, state and local regulations pertaining to working in or crossing live watercourses shall be met. For Planting Dates of May 1 to Aug, 31 MS -15 The bed and banks of a watercourse shall be stabilized immediately after work in the watercourse is completed. Use Gerrman Millet 50 lb, MS -16 Underground utility lines shall be installed in accordance with the following standards in addition to other applicable at per acre, criteria: a. No more than 500 linear feet of trench may be opened at one time. b. Excavated material shall be placed on the uphill side of trenches. c. Effluent from dewatering operations shall be filtered or passed through an approved sediment trapping device, or both, and discharged in a manner that does not adversely affect flowing streams or off-site property. II b Ii h d n accordance with these regulations Earthwork Summary: It is expected that the earthwork on this project will balance on site. d. Restabil(zation sha e accomp s e i e. Applicable safety regulations shall be complied with. General construction notes for Erosion and Sediment Control plans MS -17 Where construction vehicle access routes intersect paved public roads, provisions shall be made to minimize the transport of sediment by 1. The plan approving authority must be notified one week prior to the pre construction vehicular tracking onto the paved surface. Where sediment is transported onto a public road surface, the road shall be cleaned thoroughly at the end of each day. Sediment shall be removed from the roads by shoveling or sweeping and transported to a sediment control disposal area. Street conference, one week prior to the commencement of land disturbing activity, and One Week washing shall be allowed only after sediment is removed in this manner. This provision shall apply to individual subdivision lots as well as to larger prior to the final inspection. land -disturbing activities. 2. Al erosion and sediment control measures will be constructed and maintained according t0 MS 18 All temporary erosion and sediment control measures shall be removed within 30 days after final site stabilization or after the temporary ns:asures are no longer needed, unless otherwise authorized by the local program administrator. Trapped minlrrum standards and specifications of the Virginia Erosion and Sediment Control seliment and the disturbed soil areas resulting from the disposition of temporary measures shall be permanently stabilized to prevent further erosion Handbook and Virginia Regulations VR 625-02-00 Erosion and Sediment Control and sedimentation. Regulations. N5-19 Stormwater management plan for the project details the extended detention dry pond. The subsequent routing shows substantial decrease in stormwater runoff for the site. 3. ":i erosion and sediment control measures are to be placed prior to or as the first step in Mulch Specifications Straw or Hay- 1.5 to 2.0 ton per ac. (2.0 min. for winter cover)- free from weeds and coarse matter. Must be anchored. Spread by hand or blower, Fiber Mulch- Min. 1500 Ib, per acre- Do not use as winter cover or during hot, dry periods* Apply as slurry. Com Stalks - 4-6 ton per acre- Cut or shredded into 44 lengths. Air dried. Do not use in fine turf areas. Apply by hand or blower. Wood Chips - 4-6 ton per acre- Free of coarse matter. Air dried. Treat with 12 Ib. nitrogen/ton Do not use in fine turf areas. Apply by hand, blower or chip handler. Bark Chips or Shredded Bark- 50-70 C.Y. per acre- Free of Coarse matter. Air Dried. Do not use in fine turf areas. Apply by hand, blower or chip handler *When fiber Mulch is the only available mulch during periods when straw should be used, apply at rate of 2,000 Ib. per ac. clearing. 4. ^, copy of the approved erosion and sediment control plan shall be maintained on the site at ail Jmes. , - Prior to commencing land disturbing activities in areas other than indicated on these plans (including, but not limited to, off-site borrow or waste areas), the contractor shall submit a supplementary erosion control plan to the owner for review and approval by the plan approving authority. 6. The contractor is responsible for installation of any additional erosion control measures necessary to prevent erasion and sedimentation as determined by the plan approving authority. 7. All disturbed areas are to drain to approved sediment control measures at all times during land disturbing activities and during site development until final stabilization is achieved. 8. During dewatering operations, water will be pumped into an approved filtering device. 9. The contractor shall inspect all erosion control measures periodically and after each runoffproducing rainfall event. Any necessary repairs or cleanup to maintain the effectiveness of the erosion control devices shall be made immediately. 10. All fill material to be taken from an approved, designated borrow area. 11. All waste materials shall be taken to an approved waste area. Earth fill shall be inert materials only, free of roots, stumps, wood, rubbish, and other debris. 12. Borrow or waste areas are to be reclaimed within 7 days of completion per Zoning Ordinance section 5.1.28. 13. All inert materials shall be transported in compliance with section 13-301 of the Code Of Albemarle. 14. Borrow, fill Or waste activity involving industrial -type power equipment shall be limited to the hours of 7:00am to 9:00pm. 15. Borrow, fill or waste activity shall be conducted in a safe manner than maintains lateral support, or order to minimize any hazard to persons, physical damage to adjacent land and improvements, and damage to any public street because 0 slides, sinking, or collapse. 16. The developer shall reserve the right to install, maintain, remove or convert to permanent stormwater management facilities where applicable all erosion control measures required by this plan regardless of the sale of any lot, unit, building or other portion of the property. 17. Temporary stabilization shall be temporary seeding and mulching. Seeding is to be at 75 lbs/acre, and in the months of September to February to consist a 50/50 mix of Annual Ryegrass and Cereal Winter Rye, or in March and April to consist of Annual Rye, or May through August to consist of German Millet. Straw mulch is to be applied at 80lbs/100sf. Alternatives are subject to approved by the County erosion control inspector. 18. Permanent stabilization shall be lime and fertilizer, permanent seeding, and mulch. Agricultural grade limestone shall be applied at 90lbs/1000sf, incorporated into the top 4-6 inches of soil. Fertilizer shall be applied at 1000lbs/acre and consist of a 10-20-10 nutrient mix. Permanent seeding shall be applied at 180lbs/acre and consist of 95% Kentucky 31 Or Tall Fescue and 0-5% Perennial Ryegrass or Kentucky Bluegrass. Straw mulch is to be applied at 80lbs/100sf. Alternatives are subject to approved by the County erosion control inspector. 19. Maintenance: All measures are to be inspected weekly and after each rainfall. Any damage or clogging to structural measures is to be repair immediately. Silt traps are to be cleaned when 50% of the wet storage volume is filled with sediment. All seeded areas are to be reseeded when necessary to achieve a good stand of grass. Silt fence and diversion dykes which are collecting sediment to half their height must be cleaned and repaired immediately. 20. All temporary erosion and sediment control measures are to be removed within 30 days of final site stabilization, when measures are no longer needed, subject to approval by the County erosion control inspector. 1992 Outlet Protection - ...vv`. Filter Cloth Key in 6-9" recommended for entire perimeter 1. Apron Lining May be Rip Rap, grouted Riprap Gabion Basket, or concrete. 2. La= length of riprap apron as specified. 3. d= 1.5time max stone diameter but not less than 6 in. 0 STONE CONSTRUCTION ENTRANCE EXISTING 70' MIN, I PAVEMENT A 5:1 EX. GROUND FILTER CLOTH 6" MIN. A SIDE ELEVATION 70' MIN. WASHRACK B (OPTIONAL) EX. GROUND% MOUNTABLE BERM (OPTIONAL) - z 0 11 EX. 10' MIN. PAVEMENT VDOT #1 13"t -POSITIVE DRAINAGE , z COURSE AGGREGATE ITO SEDIMENT r * MUST EXTEND FULL TRAPPING DEVICE o WIDTH OF INGRESS AND PLAN VIEW EGRESS OPERATION 12' MIN. 3" MIN. ✓ / /\/ \ N. FILTER CLOTH SECTION A -A REI COr�, SOURCE: VA. DSWC JLI IIUN t5 -t3 PLATE 3.02-1 a� IA c N ® ' ? co co a �� W 0 Q i w �J N 0) N Z.U) Q) NhL �o nn 00 00 m w CD z --� - I I a, 0 m O II - o - = of U N F -- - J i Q L_COO C� U 0 41 o U L o 0 � z a m m U p LJ 0 H z z i� Q.` Ljw ru :\ o v E� o a� oa a cn �: w S: 2� v to z (n u a ", m V) V) a o ® LU a z ® rG w o a� IA 60 N ® ' ? co co a �� W 0 9 H mi W i w �J N 0) N Z.U) Q) NhL �o nn 00 00 m w CD z --� - I I 0 m O II - o - = of U N F -- - J 2 -I Q L_COO C� U 0 41 o U L o 0 � z m m U p LJ 0 H z z i� Q.` Ljw a -w :\ w \ :5 i5 0t- o1--- on z L� z a� NN U O N 0) N Z.U) Q) NhL O nn 00 Q Q LnN � >Lnr- w z --� - I I 0 �-m.0 a)Lnco -_<_J II - o - = of U U LJ > N N s 0 07 I I L_COO D oo - nn 0 U L 0 V) CEJ O N i� 0 w J -4- _J `t C �z0 v C 0 U) 0 w 92 aJ W 4d C�7 cit 0 CO -I 0) �Y 0iNll� X 0 L M �s LO > n� �t u - I\ d - In SHEET NO. 6 OF 6 DWG. N0. 07-02a