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Home My WebLink AboutSDP200700031 Calculations 2007-03-06COUNTY OF ALBEMARLE Department of Community Development 401 McIntire Road, Room 227 Charlottesville, Virginia 22902-4596 Phone (434) 296-5832 Fax (434) 972-4126 PUBLIC WATER / SEWER CONNECTION EVALUATION THIS SECTION IS TO BE COMPLETED BY THE ALBEMARLE COUNTY SERVICE AUTHORITY ENGINEERING DIVISION 1. Distance to public water connection: q SB 2. Access across adjoining property will / will not be required: i,,i f 1 6t 3. Distance to public sewer connection: u�la 4. Access across adjoining property will / will not be required: N /A COMMENTS:ACSA wu,ld Wl- 4o he. t'—s4,11 M o lur,cj SIGNA C.S.A. THIS SECTION IS TO BE COMPLETED BY THE PROPERTY OWNER 1. Provide contractor's written estimates. 2. Estimated cost to install a well and associated electrical and plumbing equipment: 6 3 < ! 3. Estimated cost to install a water line for public connection (do not include ACSA fees): i—�t/�O� 4. Estimated cost to install a septic system: 5. Estimated cost to install a sewer line for public connection: THIS SECTION IS TO BE COMPLETED BY THE AGENT Connection to public water will / will not be required: Connection to public sewer will / will not be required: Signature: 5/19/06 FOSTER WELL & PUMP COMPANY, INC. P.O. Box 260 Earlysville, Virginia 22936 (434)973-9079 1-800-827-9079 Fax (434) 973-8838 TO: KOREAN COMMUNITY CHURCH DATE: MAR 6 2007 ATTN: MR. KIM FROM: SHANE FOSTER ***PROPOSAL*** Pursuant to our meeting yesterday, below you will please find the costs associated with installing a new water well system on property for the Church located off Route 250 in Albemarle County. Drill 305'@ $9.00/ft 6" PVC Casing 60'@ $6.50/ft 50' Grout (1116 well) Pump, Tank, Line Installation -Constant Pressure System using 1.5HP Submersible Pump w/ 3 HP Motor; Subdrive; 280' of 1.25" Sch 120 PVC Pipe w/ #10/3 flat wire in the well; pitless adaptor; 200' of ditch, 1.25" polypipe, and #10/3 of wire for waterline; Model PC66 Pressure tank w/ kit, misc fittings, hoist truck and labor time $2,745.00 $ 390.00 $ 750.00 $5,754.00 Given the above costs, you could expect a well system 305' deep to cost approximately nine thousand six hundred thirty nine dollars ($9,639.00). Please be advised that these are estimates only. Any variance in well depth, casing depth, grouting, or material used for pump installation could vary the costs accordingly. We appreciate the opportunity of meeting with you and offering this information. If you have any questions, or would like to schedule the work, please do not hesitate to contact us. Thank you -- DIGS, INC P.O. BOX 31 Charlottesville, VA 22902 Phone: 434-978.4435 41. Fax: 434-978-3703 Proposal Submitted TQ_ Johnny Drumheller PROPOSAL Page: 1 of 1 Date: 2-27-07 Work To Be Performed At: Korean Church - Route 250 West Unit Cost Mobilization 1 LS $850.00 $850.00 Tap 1 LS $600.00 $600.00 Equipment & Labor 1 LS $14,000.00 $14,000.00 Material 1 LS $16,800.00 $16,800.00 Concrete 1 LS $650.00 $650.00 Asphalt demo & Disposal 1 LS $1,800.00 $1,800.00 Gravel Replacement 1 LS $3,000.00 $3,000.00 Asphalt Replacement 1 LS $6,200.00 $6,200.00 Testing 1 LS $350.00 $350.00 TOTAL $44,260,00 MOM Paint Striping not included Seed & Straw not Included Rock Removal not included Permits and Bonds not included All excess dirt to remain on'site AM material Is guareMsed to be as spedned, and the above work to be performed In accordance with the drwMngs and apaclAcallons submltteq fof above wort snd compisted in a subete/dlAl workmanlike manner for the sum of Dottars is 44,250.00 ) with payments M be made as follows; Not 10 E".1.5XJmo ager 30 days. In addition. the undersigned agraee to pay DIMS, Inc. aM costs of collection Including attomeys tees. This proposal may be withdrawn Rent us If not soeeplod vxllhko 15 days, Any ak®rstlao or deviation from above spedflcatltms Involving extra costs, will be executed only upon written orders, and WIN becdnta on extra rhAMe over orad above uta estimate. At agreements 0WAVent upon sb*as, accidents, or delays beyond our coMrol, owner to carry In. tornado, and other necaseery Insurance upon above work, Workmen's Cempenaetlon and Pubk Liability Insurance an above work taken out by DIGS, Inc. Respectfully submitted: DIGS, Inc. Per. Malcolm J. Vanderploeg .atcceytance of ProyosaC The above prices, specikeilone and oondttions ale sedaMclory and are hereby accepted. You ars aUthonsod Iv do the worts as speaMbd. Payment will ba made as outNned above. Pleasa sign acceptance d proposal and return one copy: Date: Signature: �. Jrt�lll COUNTY OF ALBEMARLE Department of Community Development 401 McIntire Road, Room 227 Charlottesville, Virginia 22902-4596 Phone (434) 296-5832 Fax (434) 972-4126 PUBLIC WATER / SEWER CONNECTION EVALUATION THIS SECTION IS TO BE COMPLETED BY THE ALBEMARLE COUNTY SERVICE AUTHORITY ENGINEERING DIVISION 1. Distance to public water connection: 2. Access across adjoining property will/ will not be required: w << 6 3. Distance to public sewer connection: N'lp 4. Access across adjoining property will / will not be required: h /A COMMENTS: Ac,5A SIGNATURE: A. C. S. A. THIS SECTION IS TO BE COMPLETED BY THE PROPERTY OWNER 1. Provide contractor's written estimates. / e} 2. Estimated cost to install a well and associated electrical and plumbing equipment: 3. Estimated cost to install a water line for public connection (do not include ACSA fees): Z1 -O, 4. Estimated cost to install a septic system: 5. Estimated cost to install a sewer line for public connection: / THIS SECTION IS TO BE COMPLETED BY THE AGENT Connection to public water will / will not be required: Connection to public sewer will / will not be required: Signature: 5/19/06 FOSTER WELL & PUMP COMPANY, INC. P.O. Box 260 Earlysville, Virginia 22936 (434)973-9079 1-800-827-9079 Fax(434)973-8838 TO: KOREAN COMMUNITY CHURCH DATE: MAR 6 2007 ATTN: MR. KIM FROM: SHANE FOSTER ***PROPOSAL*** Pursuant to our meeting yesterday, below you will please find the costs associated with installing a new water well system on property for the Church located off Route 250 in Albemarle County. Drill 305'@ $9.00/ft 6" PVC Casing 60'@ $6.50/ft 50' Grout (11113 well) Pump, Tank, Line Installation -Constant Pressure System using 1.5HP Submersible Pump w/ 3 HP Motor; Subdrive; 280' of 1.25" Sch 120 PVC Pipe w/ #10/3 flat wire in the well; pitless adaptor; 200' of ditch, 1.25" polypipe, and #10/3 of wire for waterline, Model PC66 Pressure tank w/ kit, misc fittings, hoist truck and labor time $2,745.00 $ 390.00 $ 750.00 $5,754.00 Given the above costs, you could expect a well system 305' deep to cost approximately nine thousand six hundred thirty nine dollars ($9,639.00). Please be advised that these are estimates oniv. Any variance in weii depth, casing depth, grouting, or maieriai used for pump installation couid vary the costs accordingly. We appreciate the opportunity of meeting with you and offering this information. If you have any questions, or would like to schedule the work, please do not hesitate to contact us. Thank you -- 02/27/2007 02:53 13 DIGS INC PAGE 02 I I DIGS, INC P.O. BOX 31 Charlottesville, VA 22902 Phone -,434-978-4435 41 Fax: 434-978-3703 P_roQosal $_ibmltted To: Johnny Drumheller PROPOSAL Work To BE Perform@d At: Unit Page: 1 of 1 Date: 2-27-07 Korean Church - Route 250 West Mobilization 1 LS $850,00 $850.00 Tap 1 LS $600.00 $600.00 Equipment & Labor 1 LS $14,000.00 $14,000.00 Material 1 LS $16,800.00 $16,800.00 Concrete 1 LS $650.00 $650.00 Asphalt Demo & Disposal 1 LS $1,800,00 $1,800.00 Gravel Replacement 1 LS $3,000.00 $3,000.00 Asphalt Replacement 1 LS $6,200.00 $6,200.00 Testing 1 LS $350.00 $350.00 TOTAL $41,260.00 Notes Paint Striping not included Seed & Straw not Included Rock Removal not included Permits and Bonds not included All excess dirt to remain onsite All material Is guaranteed to be as specifled, and the above work to be performed In accordance with the drawings and specifications submitted for above work and completed In a substantial workmanlike manner for the sum of Dollars (S 44,250.00 ) with payments to be made as follows: Net 10 Days. 1.5Wmo aftor 30 days. In addition, the undersigned agrees to pay DIGS, Inc. all costs of collection including adomgys fees. This proposal may be withdrawn rrom us 0 not accepted within 15 days,. Any alteration or deviation from above cpeclflcatlons involving extra cost,, will be exoculed only upon wrihen ordsm, and will become an extra charge over and above the estimate. All agreements contingent upon strikes, accidents, or delays beyond our control, Owner to carry fire, tornado, and other necessary insurance upon above work, workmen's Compensation and Public Liability Insurance on above work taken out by DIGS, Inc. Respectfully Submitted: DIGS, Inc. Per: Malcolm J. Vanderploeg .Acceptance of ProposaC The abovq prices, speef icallons and oondlllons are setist000ry and are herOby accapled. You are authorized to do the work as spaetflod. Payment will be made as outlined above. Please olgn acceptance of proposal and return one copy: Date: Signature: COUNTY OF ALBEMARLE Department of Community Development 401 McIntire Road, Room 227 Charlottesville, Virginia 22902-4596 Phone (434) 296-5832 Fax (434) 972-4126 PUBLIC WATER / SEWER CONNECTION EVALUATION THIS SECTION IS TO BE COMPLETED BY THE ALBEMARLE COUNTY SERVICE AUTHORITY ENGINEERING DIVISION 1. Distance to public water connection: 1-1 SD 2. Access across adjoining property will / will not be required: W J ( 6 e- i—eg -� d 3. Distance to public sewer connection: 4. Access across adjoining property will / will not be required: 0 /A COMMENTS:.AC5A ulf-jdd roz—'e W(- io CJ.,V-CV,. SIGNATURE: .C.S.A. THIS SECTION IS TO BE COMPLETED BY THE PROPERTY OWNER 1. Provide contractor's written estimates. 2. Estimated cost to install a well and associated electrical and plumbing equipment: A�1,,13< 3. Estimated cost to install a water line for public connection (do not include ACSA fees): C-0Zro 4. Estimated cost to install a septic system:N �eX�, d , 5. Estimated cost to install a sewer line for public connection: THIS SECTION IS TO BE COMPLETED BY THE AGENT Connection to public water IJP / will not be required: Connection to public sewer will / will not be required: Signature: f Lejy- <1 it 5/19/06 FOSTER WELL & PUMP COMPANY, INC. P.O. Box 260 Earlysville, Virginia 22936 (434)973-9079 1-800-827-9079 Fax(434)973-8838 TO: KOREAN COMMUNITY CHURCH DATE: MAR 6 2007 ATTN: MR. KIM FROM: SHANE FOSTER ***PROPOSAL*** Pursuant to our meeting yesterday, below you will please find the costs associated with installing a new water well system on property for the Church located off Route 250 in Albemarle County. Drill 305'@ $9.00/ft 6" PVC Casing 60'@ $6.50/ft 50' Grout (11113 well) Pump, Tank, Line Installation -Constant Pressure System using 1.5HP Submersible Pump w/ 3 HP Motor; Subdrive; 280' of 1.25" Sch 120 PVC Pipe w/ #10/3 flat wire in the well; pitless adaptor; 200' of ditch, 1.25" polypipe, and #10/3 of wire for waterline; Model PC66 Pressure tank w/ kit, misc fittings, hoist truck and labor time $2,745.00 $ 390.00 $ 750.00 $5,754.00 Given the above costs, you could expect a well system 305' deep to cost approximately nine thousand six hundred thirty nine dollars ($9,639.00). Please be advised that these are estimates only. Any variance in well depth, casing depth, grouting, or material used for pump installation couid vary the costs accordingly. We appreciate the opportunity of meeting with you and offering this information. If you have any questions, or would like to schedule the work, please do not hesitate to contact us. Thank you -- 02/27/2007 02:53 13 DIGS, INC P.O. BOX 31 Charlottesville, VA 22902 Phone: 434-978-4435 Fax: 434-978-3703 Proposal Submitted T- ; Johnny Drumheller DIGS INC PROPOSAL Work To Be Performed At: Unit PAGE 02 Page: 1 of 1 Date: 2.27-07 Korean Church - Route 250 West Mobilization 1 LS $850.00 $850.00 Tap 1 LS $600.00 $600.00 Equipment & Labor 1 LS $14,000.00 $14,000.00 Material 1 LS $16,800.00 $16,800-00 Concrete 1 LS $650.00 $650.00 Asphalt Demo & Disposal 1 LS $1,800.00 $1,800.00 Gravel Replacement 1 LS $3,000.00 $3,000.00 Asphalt Replacement 1 LS $6,200.00 $8,200.00 Testing 1 LS $350,00 $350.00 TOTAL $44,260.00 ores Paint Striping not included Seed & Straw not Included Rock Removal not included Permits and Bonds not included All excess dirt to remain on'site AM material is guaranteed to be ss spedtiod, end me above work to be peribrIned In 9ccOrdance wM the dreMngs and opect icalWa submMed for above wont and oomPkdod In a substantial workmanlike manner for the sura of Dollars is 44,250.00 ) with payments to be mode aS Follows; Not 10 Days.1.6%firno alter 30 days. in addition, tite undersigned so" to pay DIGS, Inc. ant casts of collection Inekxft anomoys tees. Thla propoxal may be wRhdrewn Rom us h not accepted wkhin 15 days, Any akeratlon or deviation from above Vocinc"ou ktvohring extra texts, wIV be executed only upon wrlllan order, and VM bemmo an extra charge over and above oro estimate. An agreements contingent upon strikes, accidents, or delays beyond oto control. Owner to carry fire, tornado, and other necessary Insurance upon above work, walcman's COMPormollon and Public L_WOW Insurance an above work taken out by 0105, Inc. Respectfully Submitted: DIGS, Inc. Per, Malcolm J. Vanderpioeg Acceyfttnce of ProyosaC The above prices, epetylkellons and otxtdltione are seddadory and ere hereby accepted. You ere outhortod to do the worth es apecMtsd. Payment will bo made as ou11ned above, Pieria sign acceptance of proposal and nice one copy: Date: Signature: LD -229 Storm Drain Design Computations Route: N/A Pro': Korean Church County: Albemarle District: Samuel Miller Descrintinn- Pina Calculafinns From ITo Point Catch Runoff Inc Accum Tot Tot Tot Up Dn Pip e Inv Pie Pie Velocity Flow time Point A Coef AC AC Tc Int Flow Inv Inv Len S Dim Cap Inc ac min in/hr) (cfs) EI EI ft % in) (cfs) (ft/s) (min 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 ST -7 ST -6 0.15 0.72 0.11 0.11 5.0 6.81 0.74 617.00 616.00 17.0 5.88 15 16.97 6.92 0.04 ST -6 ST -5 0.26 0.56 0.15 0.15 5.0 6.81 2.98 616.00 615.72 55.0 0.51 15 4.95 3.93 0.23 ST -5 ST -4 0.10 0.82 0.08 0.08 5.2 6.74 3.53 615.62 615.44 36.0 0.50 15 4.95 4.15 0.14 ST -4 ST -3 0.03 0.86 0.03 0.11 5.4 6.70 3.70 615.34 615.24 20.0 0.50 15 4.95 4.22 0.08 ST -2 ST -1 0.10 0.82 0.08 0.08 5.0 6.81 0.56 615.44 615.00 22.0 2.00 15 9.90 4.36 0.08 ST -14 ST -13 0.52 0.651 0.34 0.34 5.0 6.81 2.30 614.74 614.43 62.01 0.50 15 4.95 3.96 0.26 ST -13 ST -12 0.26 0.79 0.21 0.54 5.3 6.74 3.70 614.33 614.02 62.0 0.50 15 4.95 4.42 0.23 ST -12 ST -11 0.03 0.69 0.02 0.56 5.5 6.67 3.84 613.92 613.57 69.01 0.51 15 4.95 4.45 0.26 ST -11 ST -10 0.19 0.761 0.14 0.71 6.0 6.53 4.63 613.47 613.31 31.0 0.52 15 4.95 4.58 0.11 `m LD -204 Stormwater Inlet Computations Saq Inlets Only E m cu 7 Z C Q C O C N N Z n O N O �' O O N a O U T p y w cu a j U a ~ a O L U � Q U _T 'y L U O i _ f6 O) C N X x (.7 C a U N N �_ C O) N (n C 2 N 7 .U -r (0 C O Q C O N U (4 U O i- C N N c6 m 2 L Q O C O. m O = 4 O d cn 1 s 2 v () v 7 U) O O a 2 j (D @ n (� � cn o LU o O O � � U a g 3 (ft)I 4 (ac) 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 (in/hr) (cfs) (cfs) (cfs) ('/') ('/') (T) (ft) (ft) (cfs) (cfs) (ft) (ft) (ft) ST -11 ST DI -3C DI 61 0.19 0.76 0.14 4.00 0.58 0.58 0.016 0.036 0.033 0.083 2.67 0.26 100% 0.58 0.00 0.26 0.5 0.52 2.67 -2 ST -3C DI 61 0.10 0.82 0.08 4.00 0.32 0.32 0.016 0.036 0.033 0.083 1.8 0.23 100% 0.32 0.00 0.23 0.5 0.46 1.80 -4 ST -36 D1-36 4 0.03 0.86 0.03 4.00 0.11 0.11 0.016 0.089 0.021 0.083 0.86 0.07 100% 0.11 0.00 0 0 0 0.00 -6 ST DI 6 0.15 0.56 0.08 4.00 0.34 0.34 0.016 0.0337 0.021 0.083 1.57 0.14 100% 0.34 0.00 01 0 0 0.00 -5 ST -38 D1-36 4 0.10 0.47 0.05 4.00 0.18 0.18 0.016 0.089 0.021 0.083 1.03 0.09 95% 0.17 0.01 0 0 0 0.00 -7 ST -12 D1-313 8 0.27 0.72 0.19 4.00 0.77 .771 00161 0.1 0.021 0.083 1.74 0.14 97% 0.74 0.03 0 0 0 0.00 ST -13 DI 4 0.03 0.69 0.02 4.00 0.09 0.091 0.0161 0.1 0.021 0.083 0.78 0.06 100%j 0.09 0.00 0 0 0 0.00 ST -14 -3C DI 6 0.26 0.79 0.21 4,001 0.82 0.821 0.0161 0.03 0.043 0.083 2.59 0.36 100% 0.82 0.00 0.36 0.5 0.72 2.59 -3C 6 0.52 0.65 0.34 4.00 1.35 1.35 0.016 0.02 0.050 0.083 3.1 0.32 100%1 1.35 0.00 0.32 0.51 0.64 3.10 Korean Community Church Stormwater Routing Dominion Development Resources, LLC March 23, 2007 The Albemarle County Water Protection Ordinance requires that the post -development peak rate of runoff from land development shall not exceed the pre -development peak rate of runoff for two and ten year storm events. Chapter 5 of the Virginia Stormwater Management Handbook provides guidelines for performing various engineering calculations associated with the design of stormwater management facilities. The modified rational method discussed in that reference is used here. The critical storm was determined for the 2 and 10 -year storms by trial -and -error. That is, the storm duration was increased in increments until the maximum storage and outflow was reached, the critical storm. For the 2 -year storm the discharge, water surface elevation and storage increased until a 60 -minute storm event and then they decreased with increasing duration. Therefore, a 60 -minute storm is the critical 2 -year storm. The 1.40 cfs discharge from that storm event is less than the 2.28 cfs pre -development as required. Similarly, the critical 10 -year storm is a 35 -minute event with a discharge of 3.10 cfs, which is less than the pre -development discharge of 3.14 cfs as required. PRE -DEVELOPMENT Intensity Peak Flow (years) Area Number C Area (ac) CA 1 0.350 1.970 0.689 --------------- Weighted Totals: ----- --------- 0.350 --------- 1.970 0.689 Time of concentration= 16 min 7.51 Period Intensity Peak Flow 100 (years) (in/hr) (cfs) ------- 2 --------- 3.30 --------- 2.28 5 4.05 2.79 10 4.55 3.14 25 5.37 3.70 50 5.90 4.07 100 6.60 4.55 POST -DEVELOPMENT Area Number C Area (ac) CA 1 0.900 1.060 0.954 2 0.350 0.910 0.318 --------------- Weighted Totals: ----- --------- 0.646 --------- 1.970 1.272 Time of concentration= 13 min Period Intensity Peak Flow (years) (in/hr) (cfs) 2 3.70 4.71 5 4.50 5.73 10 5.00 6.36 25 5.90 7.51 50 6.50 8.27 100 7.20 9.16 I Korean Community Church Stormwater Routing Dominion Development Resources, LLC March 23, 2007 Basin Geometry (kcc.sto) Section = Riser Flevation a weir Area RO (ft) acting as (sq ft) 1 607.52 = Pori7,ontal pipe 0.00 (Calculated) 2 612.00 3360.00 in outlet 3 2 -year 614.00 4860.00 4 616.00 6771.00 Riser Outlet Structures (kcc.str) Elev Storage (Types: l:Weir; 2:Pipe; 3:Riser) (cfs) Structure 1 (cu ft) 1: Type 0.0 3; Riser Weir: 2: Elevation (ft) 0.36 0.00 v 3: Length (ft) 2.0 0.00 0.0 4: Coefficient 3,816.21 0.00 Riser: 5: Elevation (ft) 613.02 614.00 4.0 6: Inlet Area (sf) 0.00 6.00 3,935.56 7: Inlet Perimeter (ft) 6.40 0.00 8: Orifice Elevation (ft) 0.00 0.0 9: Orifice Diameter (in) 0.00 2.53 10: Orifice Elevation (ft) 0.00 8.0 11: Orifice Diameter (in) 0.00 4,412.65 12: Orifice Elevation (ft) 0.00 613.19 13: Orifice Diameter (in) 0.00 Pipe: 14: Invert Elevation (ft) 610.70 0.0 15: Diameter (in) 4,976.12 15.00 4.34 16: Orifice Diameter (in) 15.00 13.0 17: Length (ft) 0.00 50.00 5,446.62 18: Manning's n 0.0 0.012 613.44 19: Slope (ft/ft) 4.27 0.005 0.00 20: Entrance Loss Coefficient 0.5 Surface: 21: Initial Flevation (ft) 613.00 +t+ +++*+++*++*+*** ROUT* + *+**+******++t+ VERSION 5.4 **t+ Control: RW = Riser acting as a weir RO = Riser acting as an orifice PT = Pori7,ontal pipe in inlet control PO = Horizontal pipe in outlet control 2 -year 13 -min storm Time Inflow Riser Total Elev Storage (min) ----------------------------------------------------- (cfs) (cfs) (cfs) (ft) (cu ft) 0.0 0.00 0.0 0.00 613.00 3,776.45 1.0 0.36 0.0 0.00 613.00 3,786.39 2.0 0.72 0.0 0.00 613.01 3,816.21 3.0 1.09 0.0 0.00 613.02 3,865.93 4.0 1,45 0.0 0.00 613.04 3,935.56 5.0 1.81 0.0 0.00 613.06 4,025.10 6.0 2.17 0.0 0.00 613.09 4,134.50 7.0 2.53 0.0 0.00 613.12 4,263.72 8.0 2.90 0.0 0.00 613.15 4,412.65 9.0 3.26 0.0 0.00 613.19 4,581.16 10.0 3.62 0.0 0.00 613.23 4,769.06 11.0 3.98 0.0 0.00 613.28 4,976.12 12.0 4.34 0.0 0.00 613.33 5,202.08 13.0 4.71 0.0 0.00 613.39 5,446.62 14.0 4.49 0.0 0.00 613.44 5,693.75 15.0 4.27 0.0 0.00 613.49 5,927.81 16.0 4.06 0.0 0.00 613.54 6,148.98 17.0 3.84 0.0 0.00 613.59 6,357.43 18.0 3.62 0.0 0.00 613.63 6,553.35 19.0 3.41 0.0 0.00 613.67 6,737.02 20.0 3.19 0.0 0.00 613.71 6,909.41 2 Korean Community Church Stormwater Routing Dominion Development Resources, LLC March 23, 2007 21 .0 2.97 0.0 0.00 61.3.74 7,070.49 22.0 2.76 0.0 0.00 613.77 7,220.26 23.0 2.54 0.0 0.00 613.80 7,358.72 24.0 2.32 0.0 0.00 613.83 7,485.84 25.0 2.10 0.0 0.00 613.85 7,601.64 26.0 1.89 0.0 0.00 613.87 7,706.11 27.0 1.67 0.0 0.00 613.89 7,799.23 28.0 1.45 0.0 0.00 613.91 7,881.01 29.0 1.24 0.0 0.00 613.92 7,951.45 - 30.0 1.02 0.0 0_00 613.94 8,010.55 31.0 0.80 0.0 0.00 613.94 8,058.30 32.0 0.59 0.0 0.00 613.95 8,094.70 33.0 0.37 0.0 0.00 613.96 8,119.76 < critical storm 2 -year 40 -min storm Time Inflow Riser Total Elev Storage (min) -------------------------------------------------------- (cfs) (cfs) (cfs) (ft) (cu ft) 0.0 0.00 0.0 0.00 613.00 3,776.45 5.0 0.91 0.0 0.00 613.03 3,900.96 10.0 1.81 0.0 0.00 613.12 4,275.35 15.0 2.35 0.0 0.00 613.26 4,900.65 20.0 2.35 0.0 0.00 613.42 5,608.08 25.0 2.35 0.0 0.00 613.58 6,316.04 30.0 2.35 0.0 0.00 613.73 7,024.44 35.0 2.35 0.0 0.00 613.88 7,732.88 40.0 2.35 0.1 RW 0.07 614.02 8,441.20 45.0 1.81 0.9 RW 0.88 614.12 8,927.66 50.0 1.27 1.2 RW 1.21 614.15 9,069.48 < critical storm 55.0 0.73 1.1 RW 1.05 614.13 9,002.45 2-vear 50 -min storm Time Inflow Riser Total Elev Storage (min) (cfs) (cfs) (cfs) (ft) (cu ft) 0.0 0.00 0.0 0.00 613.00 3,776.45 5.0 0.78 0.0 0.00 613.03 3,884.10 10.0 1.57 0.0 0.00 613.10 4,207.74 15.0 2.04 0.0 0.00 613.23 4,748.44 20.0 2.04 0.0 0.00 613.37 5,360.03 25.0 2.04 0.0 0.00 613.50 5,971.96 30.0 2.04 0.0 0.00 613.64 6,584.20 35.0 2.04 0.0 0.00 613.77 7,196.68 40.0 2.04 0.0 0.00 613.89 7,809.09 45.0 2.04 0.1 RW 0.05 614.02 8,421.41 50.0 2.04 0.8 RW 0.83 614.12 8,904.47 55.0 1.57 1.3 RW 1.32 614.16 9,113.52 60.0 1.10 1.3 RW 1.33 614.16 9,116.89 < critical storm 65.0 0.63 1.0 RW 0.98 614.13 8,971.85 2 -year 55 -min storm Time Inflow Riser Total Elev Storage (min) ---- (cfs) (cfs) (cfs) (ft) (cu tt) ------------------------------------------------ 0.0 0.00 0.0 0.00 613.00 3,776.45 5.0 0.73 0.0 0.00 613.02 3,877.35 10.0 1.47 0.0 0.00 613.10 4,180.71 15.0 1.91 0.0 0.00 613.21 4,687.58 20.0 1.91 0.0 0.00 613.35 5,260.85 25.0 1.91 0.0 0.00 613.47 5,834.41 30.0 1.91 0.0 0.00 613.60 6,408.24 35.0 1.91 0.0 0.00 613.72 6,982.30 40.0 1.91 0.0 0.00 613.84 7,556.34 45.0 1.91 0.0 0.00 613.96 8,130.32 50.0 1.91 0.4 RW 0.38 614.07 8,667.92 3 Korean Community Church Stormwater Routing Dominion Development Resources, LLC March 23, 2007 55.0 1.91 1..0 RW 1.04 614.13 8,995.86 60.0 1.47 1.4 RW 1.38 614.16 9,136.89 < critical storm 65.0 1_.03 1.3 RW 1.28 614.15 9,096.07 70.0 0.59 0.9 RW 0.93 614.12 8,950.12 2 -year 60 -min storm CRITICAL STORM Time Inflow Riser Total Elev Storage (min) (cfs) (cfs) (cfs) (ft) (cu ft) ----------------------------------------------------- - 0.0 0.00 0.0 0.00 613.00 3,776.45 5.0 0.68 0.0 0.00 613.02 3,870.61 10.0 1.37 0.0 0.00 613.09 4,153.69 15.0 1.78 0.0 0.00 613.20 4,626.73 20.0 1.78 0.0 0.00 613.32 5,161.71 25.0 1.78 0.0 0.00 613.44 5,696.92 30.0 1.78 0.0 0.00 613.56 6,232.36 35.0 1.78 0.0 0.00 613.68 6,767.98 40.0 1.78 0.0 0.00 613.79 7,303.68 45.0 1.78 0.0 0.00 613.90 7,839.33 50.0 1.78 0.0 RW 0.02 614.01 8,374.92 55.0 1.78 0.6 RW 0.65 614.10 8,815.26 60.0 1.78 1.2 RW 1.1.9 614.15 9,059.11_ 65.0 1.37 1.4 RW 1.40 614.16 9,143.49 <2.28 cfs pre [CRITICAL STORM 70.0 0.96 1.2 RW 1.22 614.15 9,071.64 75.0 0.55 0.9 RW 0.88 614.12 8,927.28 2 -year 65 -min storm Time Inflow Riser Total Elev Storage (min) -------------------------- (cfs) (cfs) (cfs) -------------------------- (ft) (cu ft) 0.0 0.00 0.0 0.00 61.3.00 3,776.45 5.0 0.65 0.0 0.00 613.02 3,865.35 10.0 1.29 0.0 0.00 613.08 4,132.60 15.0 1.68 0.0 0.00 613.18 4,537.88 20.0 1.68 0.0 0.00 613.30 5,042.96 25.0 1.68 0.0 0.00 613.41 5,548.23 30.0 1.68 0.0 0.00 613.52 6,053.68 35.0 1.68 0.0 0.00 613.63 6,559.31 40.0 1.68 0.0 0.00 613.74 7,065.08 45.0 1.68 0.0 0.00 613.84 7,570.80 50.0 1.68 0.0 0.00 613.95 8,076.47 55.0 1.68 0.2 RW 0.23 614.05 8,568.55 60.0 1.68 0.8 RW 0.78 614.11 8,879.65 65.0 1.68 1.2 RW 1.22 614.15 9,074.08 70.0 1.29 1.4 RW 1.37 614.16 9,131.48 < critical storm 75.0 0.91 1.2 RW 1.16 614.14 9,048.82 80.0 0.52 0.8 RW 0.84 614.12 8,908.26 11 Korean Community Church Stormwater Routing Dominion Development Resources, LLC March 23, 2007 10 -year 13 -min storm Time Inflow Riser Total Elev Storage (min) --------------------------------------------------------- (cfs) (cfs) (cfs) (ft) (Cu ft) 0.0 0.00 0.0 0.00 613.00 3,776.45 1.0 0.49 0.0 0.00 633.00 3,789.88 2.0 0.98 0.0 0.00 613.01 3,830.19 3.0 1.47 0.0 0.00 613.03 3,897.40 4.0 1.96 0.0 0.00 613.05 3,991.54 5.0 2.45 0.0 0.00 613.08 4,112.57 6.0 2.94 0.0 0.00 613.11 4,260.42 7.0 3.42 0.0 0.00 613.16 4,434.94 8.0 3.91 0.0 0.00 613.20 4,635.93 9.0 4.40 0.0 0.00 613.25 4,863.09 11.0 5.38 0.0 0.00 613.38 5,394.32 12.0 5.87 0.0 0.00 613.44 5,697.40 13.0 6.36 0.0 0.00 613.52 6,024.65 14.0 6.07 0.0 0.00 61.3.59 6,354.51 15.0 5.77 0.0 0.00 613.65 6,666.08 16.0 5.48 0.0 0.00 613.72 6,960.88 17.0 5.19 0.0 0.00 613.78 7,240.44 18.0 4.90 0.0 0.00 613.83 7,504.73 19.0 4.60 0.0 0.00 613.88 7,753.74 20.0 4.31 0.0 0.00 613.93 7,987.44 21.0 4.02 0.0 0.00 613.97 8,205.83 22.0 3.72 0.0 RW 0.04 614.02 8,408.89 23.0 3.43 0.3 RW 0.26 614.05 8,594.38 24.0 3.14 0.5 RW 0.53 614.09 8,753.15 25.0 2.84 0.8 RW 0.79 614.11 8,882.68 26.0 2.55 1.0 RW 1.01 614.13 8,983.34 27.0 2.26 1.2 RW 1..18 614.15 9,056.93 28.0 1.97 1.3 RW 1.30 614.16 9,105.99 29.0 1.67 1.4 RW 1.37 614.16 9,133.26 30.0 1.38 1.4 RW 1.39 614.16 9,141.46 < critical storm 31.0 1.09 1.4 RW 1.37 614.16 9,131.26 32.0 0.79 1.3 RW 1.30 614.15 9,103.86 33.0 0.50 1.2 RW 1.19 614.15 9,061,99 10 -year 20 -min storm Time Inflow Riser Total Elev Storage (min) (cfs) (cfs) (cfs) (ft) (cu ft) 0.0 0.00 0.0 0.00 613.00 3,776.45 5.0 1.98 0.0 0.00 613.07 4,049.93 1.0.0_ 3.96 0.0 0.00 613.27 4,942.88 15.0 5.15 0.0 0.00 613.58 6,315.20 20.0 5.15 0.0 0.00 613.91 7,871.82 25.0 3.97 1.3 RW 1.31 614.16 9,108.46 30.0 2.78 2.6 RW 2_. 57 614_.2_4_ < critical storm 35.0 1.59 2.2 RW 2.22 614.22 _9,560.75 9,444.22 10 -year 30 -min storm Time Inflow Riser Total Elev Storage (min) (cfs) (cfs) (cfs) (ft) (cu ft) 0.0 0.00 0.0 0.00 613.00 3,776.45 5.0 1.57 0.0 0.00 613.05 3,992.26 10.0 3.13 0.0 0.00 613.22 4,697.59 15.0 4.07 0.0 0.00 613.46 5,780.71 20.0 4.07 0.0 0.00 613.73 7,007.91 25.0 4.07 0.0 0.00 613.98 8,236.25 30.0 4.07 1.6 RW 1.64 614.18 9,234.92 35.0 3.13 2.9 RW 2.91 614.27 9,668.93 < critical storm 40.0 2..20 2.7 RW 2.68 61.4.25 9,594.81 45.0 1.26 2.1 RW 2.08 61.4.21 9,396.36 5 Korean Community Church Stormwater Routing. Dominion Development Resources. LLC March 23, 2007 10 -year 35 -min storm CRITICAL STORM Time Inflow Riser Total Elev Storage (min) ------------------------------------------------------ (cfs) (cfs) (cfs) (ft) (cu ft) 0.0 0.00 0.0 0.00 613.00 3,776.45 5.0 1.44 0.0 0.00 611,05 3,475.32 1-0.0 2_._89 0.0 0.00 613.20 4,625.50 15.0 3.75 0.0 0.00 613.43 5,623.71 20.0 3.75 0.0 0.00 613.67 6,754.35 25.0 3.75 0.0 0.00 613.91 7,886.35 30.0 3.75 0.9 RW 0.90 614.12 8,935.12 35.0 3.75 2.6 RW 2.56 614.24 9,556.31 40.0 2.89 3.1 RW 3.10 614.28 9,726.73 < 3.14 cfs pre [CRITICAL STORM] 45.0 2.02 2.7 RW 2.68 614.25 9,595.43 50.0 1.16 2.0 RW 2.00 614.21 9,367.86 10 -year 40 -min storm Time Inflow Riser Total Elev Storage (min) ------------------------------------------------------ (cfs) (cfs) (cfs) (ft) (cu ft) 0.0 0.00 0.0 0.0-0 613.00 3,776.45 5.0 1_32 0.0 0.00 613.04 3,958.40 10.0 2.64 0.0 0.00 613.18 4,553.42 15.0 3.43 0.0 0.00 613.39 5,466.80 20.0 3.4.3 0.0 0.00 613.62 6,501.03 25.0 3.4.3 0.0 0.00 61.3.84 7,536.69 30.0 3.43 0.2 RW 0.23 614.05 8,572.02 35.0 3.43 1.7 RW 1.70 614.19 9,260.58 4-0.0 3.43 2.8 RW 2.83 514..26 9,64-2.71 45.0 2.64 3.0 RW 3.03 614.27 9,704.92 < critical storm 50.0 1.85 2.5 RW 2.53 614.24 9,544.84 55.0 1.06 1.9 RW 1.87 614.20 9,320.34 300 -year 35 -min storm Safety Check Time Inflow Riser Total Elev Storage (min) (cfs) (C£s) (cfs) (ft) (cu ft) --------------------------------------------------------- 0.0 0.00 0.0 0.00 613.00 3,776.45 5.0 2.13 0.0 0.00 613.07 4,070.32 10.0 4.26 0.0 0.00 613.29 5,029.51 15.0 5.53 0.0 0.00 613.62 6,504.11 20.0 5.53 0.0 0.00 613.97 8,177.45 25.0 5.53 2.4 RW 2.41 614.23 9,505.49 30.0 5.53 4.5 RW 4.48 614.35 10,12"1.08 35.0 5.53 5.4 RW 5.41 614.40 10,372.76 < 696.0 top of berm 40.0 4.26 4.9 RW 4.87 614.37 10,231.57 45.0 2.98 4.0 RW 3.98 614.33 9,987.54 50.0 1.71 2.9 RW 2.88 614.26 9,657.70 rel Short Version BMP Computations For Worksheets 2 - 6 Albemarle County Water Protection Ordinance: Modified Simple Method Plan: Korean Community Church Water Resources Area Preparer: JHD Date: 16 -Mar -07 Project Drainage Area Designation DA#1 L storm pollutant export in pounds, L = [P(Pj)Rv/12 ] [ C(A)2.72 ] Rv mean runoff coefficient, Rv = 0.05 + 0.009(1) Pi small storm correction factor, 0.9 1 percent imperviousness P annual precipitation, 43" in Albemarle A project area in acres in subject drainage area, A = 1.97 C pollutant concentration, mg/I or ppm target phosphorus f factor applied to RR V required treatment volume in cy, 0.5" over imperv. area = A(1)43560(0.5/12)/27 RR required removal , L(post) - f x L(pre) %RR removal efficiency, RR100/L(post) Impervious Cover Computation (values in feet & square feet) Item Development Area pre -development Area post -development Roads Length Width subtotal Len th Width 0 0 Driveways Length Width no. and walks 0 0 0 0 Parking Lots 1 2 0 Gravel areas Area 7200 x 0.70 = Structures Area no. 0 0 0 0 0 0 0 0 0 subtotal 0 0 0 0 0 3 4 g 900 0 0 0 Length Width 0 0 0 1 0 13706 Area 5040 x 0.70 = Area no. 6090 0 no. 0 0 N subtotal 0 0 0 0 0 0 0 subtotal 24 21600 0 0 0 0 0 subtotal 0 0 0 0 0 3 4 0 subtotal 1 6090 0 0 0 Actively -grazed pasture & Area Area yards and cultivated turf 14000 x 0.08 = 1120 20000 x 0.08 = Active crop land Area Area x0.25= 0 x0.25= Other Impervious Areas 0 Impervious Cover 7% I(pre) Rv(post) V 0.50 66.4 New Development (For Development Areas, existing impervious cover <= 20%) C f I (pre) * Rv(pre) L(pre) L(post) RR % RR Area Type 0.70 -00 'gO% 0.23 2.78 6.06 3.28 54% Development Area 0.35 1.00 0°fa 0.11 0.69 3.03 2.34 77% Drinking Water Watersheds 0A0 9:00 1% 0.11 0.79 3.46 2.67 77% Other Rural Land * min. values Redevelopment (For Development Areas, existing impervious cover > 20%) C f I (pre) * Rv(pre) L(pre) L(post) RR % RR Area Type .0.70 0.90. 20% 0.23 2.78 6.06 3.55 59% Development Area °0.35 0A5 0% 0.11 0.69 3.03 2.44 81% Drinking Water Watersheds OAT 0.85 1% 0.11 0.79 3.46 2.79 81% Other Rural Land Interim Manual, Page 70 rev. 16 Feb 1999 GEB Area 21600 0 13706 0 6090 1600 0 0 50% I(post) RTE PROD STORM WATER INLET COMPUTATIONS Korean Community Church DATE 3/12/2007 a M Z Z INLET w } f- LL x Z ~ c9 w J U) a_, w �% Z �Q o� U ¢ U of x Z _ LL CJ U Z U Lu O U� a ._ af LU F 3 �O b LL LL W LL F~w a �O Ln co LL (n w a XO U) U ¢ Lu a co L= LL ~ LL (o x a) m O w m m u U) x to ~ 0J F w wm U)+ 0 \U Lu F -LL J W LL a ~� J x Q Ww r r- L W W CLU w tYU ¢ m> 0 O F ¢ 0 W o �Q F U) Y ¢ w 0� 2 3A 0.03 0.9 0.03 4 0.1081 0 0.108 0.01 0.05 0.79 2 .08 0.04 1 1.26 0.03 0.9 0.03 6.5 0.176 0 0.176 0.01 0.05 1.09 2 .08 0.05 1.51 3 3A 0.06 0.8 0.05 4 0.192 0 0.192 0.01 0.05 1.13 2 0.08 0.06 1.54 0.06 0.8 0.05 6.5 0.312 0 0.312 0.01 0.05 1.57 2 0.08 0.08 1.85 4 3B 6 0.11 0.8 0.09 4 0.352 0 0.352 0.025 0.02 1.64 2 0.08 4.2 1.0 3.5 0.147 0.167 6 6 J 0.11 0.8 0.09 6.5 0.572 0 0.572 0.025 0.02 1.97 2 0.08 4.2 1.0 3.5 0.15 0.17 6 5 3B 6 0.04 0.8 0.03 4 0.13 0 0.13 0.10 0.02 0.87 2 0.08 4.2 1.0 3.5 0.15 0.17 6 6 0.04 0.8 0.031 6.5 0.21 0 0.21 0.1 0.02 1.05 2 0.08 4.2 1.0 3.5 0.15 0.17 6 6 3A 0.09 0.9 0.08 4 0.32 0 0.32 0.007 0.031 2.04 2 0.08 0.08 2.59 0.09 0.9 0.08 6.5 0.53 0 0.53 0.007 0.031 3.12 2 0.08 0.11 3.63 7 3A 0.1 0.8 0.08 4 0.32 0 0.32 0.003 0.024 3.2 2 0.08 0.08 3.35 0.1 0.8 0.081 6.5 0.52 0 0.52 0.003 0.02 4.61 2 0.08 0.11 4.63 8 3A 0.17 0.8 0.131 4 0.54 0 0.54 0.004 0.029 3.93 2 0.08 0.11 3.93 0.17 0.8 0.131 6.5 0.88 0 0.88 0.004 0.03 5.24 2 0.08 0.16 5.44 9 3A 0.09 0.9 0.081 4 0.32 0 0.32 0.009 10.031 1.92 2 0.08 0.08 2.59 0.09 0.9 0.08 6.5 0.53 0 0.53 0.009 0.031 2.84 2 0.08 0.11 3.63 10 3C 6 0.08 0.9 0.07 4 0.29 0 0.29 0.005 0.02 2.27 2 0.08 0.06 2.78 6 0.08 0.9 0.07 6.5 0.47 0 0.47 0.005 0.02 3.85 2 0.08 0.08 3.84 11 3B 4 0.03 0.9 0.03 4 0.11 0 0.11 0.038 0.02 0.98 2 0.08 4.2 1.0 3.5 0.15 0.17 4 4 0.03 0.9 0.03 6.5 0.18 0 0.18 0.038 0.02 1.18 2 0.08 4.2 1.0 3.5 0.15 0.17 4 13 3A 0.06 0.9 0.05 4 0.22 0 0.22 0.0167 0.041 1.48 2 0.08 0.06 1.56 0.06 0.9 0.05 6.5 0.35 0 0.35 0.017 0.04 1.77 2 0.08 0.09 2.13 14 3A 0.16 0.8 0.13 4 0.51 0 0.51 0.028 0.0451 1.85 1 2 0.08 0.11 2.44 0.16 0.8 0.13 6.51 0.83 0 0.83 0.028 0.05 2.4 2 0.08 0.15 3.37 Korean Community Church 3/12/2007 DRAIN RUN- CA Inlet Rain Runoff Invert Length Slope Diametei Capacity Velocity Flow Remarks AREA OFF Time Fall Q Elevations Time FROM TO "A" COEF. Unner lower ---__----_- 1_----------------