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HomeMy WebLinkAboutWPO202300004 Stormwater Management Maintenance Agree. 2023-01-19SHIMP ENGINEERING, P.C. Design Focused Engineering Stormwater Management Plan Calculation Packet Project Name: GLENWOOD ROAD POND. Prepared by: Shimp Engineering P.C. Date: January 17,2023 SHIMP ENGINEERING, P.C. Design Focused Engineering Table of Contents Project Narrative Project Description SWM Quantity SWM Quality Stormwater Quality Calculations: Post -Development VRRM Map Post -Development VRRM Spreadsheet Pre -Development Stormwater Calculations: Pre -Development Drainage Area Map Pre -Development HydroCAD Analysis Post -Development Stormwater Calculations: Post -Development Drainage Area Map Post- Development HydroCAD Analysis Independent Reports: NRCS Soils Report NOAA Precipitation Report Appendix A: Rip -Rap Calculation January 13, 2023 SHIMP ENGINEERING, P.C. pesign Faws" Engineering January 17, 2023 Regarding: GLENWOOD ROAD POND Stormwater Management Plan Proiect DescriMon The purpose of this project at Glenwood Road Pond is to construct a new wet pond for recreational purposes. All SWM calculations required are contained within the following report. The development property has an area of 3.27 acres and the development will disturb a total area of 0.71 acres. S"W duality The conditions of subsection F of 9VAC25-870-65 Water Quality have been met for this site. The VRRM considers the total limits of disturbance for the project when calculating the required load reductions for the development. Using the DEQ VRRM New Development Compliance Spreadsheet, the TP Load Reduction Required for this plan is 0.46 lb/yr. This requirement shall be satisfied through the purchase of 0.46 nutrient credits. Saw ouanifty The proposed storrnwater design meets the Water Quantity Channel Protection requirements set forth in 9VAC25- 870-66-B(3) for discharge to a natural stormwater conveyance system. The newly constructed dam will provide permanent storage of runoff and allow for runoff to be released at the normal water surface elevation at rates compliant with the Energy Balance Equation for the 1-yr storm. The proposed storrnwater design meets the Water Quantity Flood Protection requirements set forth in 9VAC25-870- 66-C(2.b). The 10-yr storm will be released from the pond at a rate below the pre -development 10-yr flowrate. If you have any questions, please do not hesitate to contact me at: Justin@shimp-engineering.com or by phone at 434- 227-5140. Best Regards, Justin Shimp, P.E. Shimp Engineering, P.C. SHIMP ENGINEERING, P.C. Design Focused Engineering Stormwater Quality Calculations: Post -Development VRRM Map Post -Development VRRM Spreadsheet LEGENDAr,I VRRM MAP VRRM TURF `\ `� _ �'°---- - - - ° ,/ GLENWOOD ROAD POND a—i N zREuVesIaSION DATE: i13 JANUARY 2023 .....VRRM IMPERVIOUS iSOIL \ LOD MANAGED TURF �------- SHIMPENGINEEING ' -PC 20,000 SF .I' j encweexwc.ramruwc-rnoiecrwvnc�evr 0.46 ACRES .r®a Me_ a as a \ \ amm-mm' �ft— Aft moo HISG: B Ap \ \; oils \— -POND SURFACE AREA `,--------,/' �/' r/100 IMPERVIOUS46* 10,900 SF �< a�� i'II 0.25 ACRES I / \ 61 �ab w/�!I DO r4ats-sa0e5— eC a <o T . V A �0 O c5 `y � 60\�_---- l sa \ \ \so O 0 I,e OUTFACE --\ / �, & OOQ��QO 000 e�� too \` 70 0 0 0 CC) 0 d► \ 44 — WATER \ v.I1 17 ) .......... ... O� re — _ — — ERTY \ r- iJe LIHSG• B -- \ /` \........... \\\ _680---------- -' LIMITS OF DISTURBANCE /---------_- /------------ "---1= _ _ -------- --------- 0.71 ACRES -\ ___E#TtRE SITE-AREAt,%PQRE`STEb IN\-- G 80 PRE -DE ELOPMENT CONBITIO�IS `\�. TP Load Reduction Required (Ib/yr) I 0.46 Land Cover (acres) A Soils B Soils C Soils D Soils Totals Forest/Open Space (acres( -- undisturbed, roteaed forest/open sace or reforested 0.00 Managed Turf (acres) --disturbed, graded for ards or otherturf to be 0.45 0.46 Impervious Cowr(ames) 0 26 0.25 0.71 Virginia Runoff Reduction Method Worksheet DEQ Virginia Runoff Reduction Method New Development Compliance Spreadsheet - Version 3.0 BMP Design Specifications List. 2013 Draft Suds & Specs Site Summary Project Title: GLENDWOOD ROAD POND Date: 44939 Total Rainfall = 43 inches Site Land Cover Summary A soils BSoils CSoils DSoils Totals %of Total Forest/Open (acres) 0.00 0.00 o.00 0.00 0.00 0 Managed Turf(acres) 0.00 0.46 0.00 0.00 0.46 65 Impervious Cover (acres) 0.00 0.25 0.00 0.00 0.25 35 0.71 100 Site Tv and Land Cover Nutrient Loads Site Rv 0.46 Treatment Volume ft' 1,196 TP Load (lb/yr) 0.75 TN Load (lb/yr) 5.38 Total TP Load Reduction Required (lb/yr) 0.46 Site Compliance Summary Total Runoff Volume Reduction (ft') 0 Total TP Load Reduction Achieved (lb/yr) 0.00 Total TN Load Reduction Achieved (lb/yr) 0.00 Remaining Post Development TP Load 0.75 (lb/yr) Remaining TP Load Reduction (lb/yr) Required 0.46 Drainage Area Summary D.A. A D.A. B D.A. C D.A. D D.A. E Total Forest/Open (acres) 0.00 0.00 0.00 0.00 0.00 0.00 Managed Turf(acres) 0.00 0.00 0.00 0.00 0.00 0.00 Impervious Cover (acres) 0.00 0.00 0.00 0.00 0.00 0.00 Total Area (acres) 0.00 0.00 0.00 0.D0 0.00 0.00 Drainage Area Compliance Summary D.A. A D.A. B D.A. C D.A. D D.A. E Total TP Load Reduced (lb/yr) 1 0.00 1 0.00 a00 1 0.00 1 0.00 a00 TN Load Reduced (lb/yr) 1 0.00 1 0.00 a00 1 0.00 1 0.00 a00 Summary Print SHIMP ENGINEERING, P.C. Design Focused Engineering Pre -Development Stormwater Calculations: Pre -Development Drainage Area Map Pre- Development HydroCAD Analysis LEGEND PRE-DEV DA PRE-DEV FOREST -WOOD PRE-DEV IMPERVIOUS WATER FLOW DIRECTIONAL ARROW SOIL PRE- TOC _ , , i a _ ____ ' / ' _ i /- i ;, --= / / r ; ;'N -- '` A. \.�.�;: .• <• r1::+•:•i .r�.•.•,i•.•.t`.:>:.•.•.•.•. <'i^•::•:•: .•.;. J.` `;.•:•: ♦�.•...:�:{.� ..• •...•' _mod°.•":. ::AIS .::•, :.1`{!:: ti•:..x>i>: �:',•?i.i:: (' ;-�� 11 •F f.v'. A>"s• o• .y' .i.�i:i.+..•�`t.SiJ:.._4.i'. :`.'.:::'.': .:•.."�/ '.'. .... :• n.::::v".' yCi:•'•:• i 1 � ' rl.';' o° �':^'.' :.•F: . ��. >,..•.. ...: ... ..�-ASII "''`'` -. - .. ham:., .t ^ .'F: ;.•ri.-,:•:<:•- HSG:(B /.•.•.•.•:'''''•'•'•'' °'" o°° fit'•'•'•'•':,•',.:'^'':'•'�f � `.\ �\_[!J: .•T:.;'.�. .•.' •••�^yam :• �/ ' .}:•,':', 1.. ° '• •' ' o o °r. �.. ° o °° b d `r.•. �•'•�.'ti.,_ �r//SS �• -'��s[..: :`�%:�.::V:' _�o°00000°o o ° o - y ::�;:•e� _. \r ``\ •'o • :;/.':•.4.: •C.•::}. r�' '.'r:•:•. 'fit:•''. .� �` `'\ �_ o ° o' o00 :.o o < :•<'.'.'.',y{1J�.•.-L'.r:' aoo •J'�:sC: :S<<.'.'�}► •.t. �':� PREDEV ONSITE °O o o° �o ':':> PREDEV OFFSITE "• •ia:•.':•i'':• '`• ` ••+•• 1• •••�•••A..: • •+• • •'r DA 0.71 AC- _IMP 4.40 AC '-T.w`S':ra.. :.v.•r _ :•:-:-ii:'iiii .•. ':.: o.. IMP 0.007 AC_ :y. °y -- -T •' - `FOREST 0.703 AC --v •.-. .-'>,-.. .:. a}CS,f`r.`•. IMP 2.40 AC !:'.'.-. ....'... ... ;: �........ _.�, ..:E. �._._�, FOREST 42.18 AC • - `� _ _ •.\•. 1 f' of iI:•'•''v2:c_v :I: :•,•:.• J POAto - _ t •ii' . r.•.•.•:.:. • - :•t;4; • '•�~'• _ Jy.. .. JIG - - rF' '-aNilT ` TOC -29.6 min �' '-y►4. �; - - :•� .v.•:.. • .LIMITS .OF • IST•R\•AN• - - :''• • ':':�}:':':':•ii ' D U B CE-a;<:i. {saw{.._ :;..✓� ? �: '.'�.;.i�•. a •: I . :.1.:1.:- 11 ' �' �\ `•\'`• _'_ - —_ 0.71 ACRES _ _ _ _ . m; :!'� .....:.: Jr.+.-.i7:-:•'-:i HSG: B _ •• ..'�:`�. , ice.. ^ a.'• >. �.,,.;. - � :-C::.•:.::::•:.:::•:•:•:v..•.f ,'ql.:.'•:;;.,.•. ! ♦, =� B r'.' ,.,.'.. �::ti �'. — �::>: o _ :^•;_i.- ii;wi;:�:lc.t�i:vi!S;l�tit,C�:_ _ ::<•: •:� I �'— _ S. -.•.' °'.:_. tardy-: ?" .. /ir.: =;; •>.. ... I '`'` ., <' .<` > ' `� 'ro, PRE-DEV DRAINAGE MAP GLENWOOD ROAD POND _ �4S, / ♦ 1 �: DATE: 13 January 2023 " NSG:\&3 '_' "--'`;' .. r'% , ` SHIMPPNGINEPRINGP.C, -' ENGINEERIN6-L9NDPLANMN6-PR0TECT MANAGEMENT : t�u.s� - 200 0 200 400 600 Pre -Development HydroCAD Report 1S Pre ONSITE 2L O Subcat Reach Aon Link i4S ,( ZPre—OFFSITE Pre -Development PRE-DEV-GLENWOOD RD POND- TOTAL 10-13-2022 Type/1 24-hr 1-yr Rainfall=3.03" Prepared by {enter your company name here} Printed 1/13/2023 HydroCAD® 9.10 s/n 07054 ©2010 HydroCAD Software Solutions LLC Page 2 Time span=5.00-48.00 hrs, dt=0.05 hrs, 861 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Pre_ONSITE Runoff Area=0.710 ac 0.99% Impervious Runoff Depth=0.20" Tc=29.6 min CN=55 Runoff=0.04 cfs 0.012 of Subcatchment 4S: Pre—OFFSITE Runoff Area=44.580 ac 5.38% Impervious Runoff Depth=0.26" Tc=29.6 min CN=57 Runoff=4.11 cfs 0.948 of Link 2L: POA Inflow=4.15 cfs 0.960 of Primary=4.15 cfs 0.960 of Total Runoff Area = 45.290 ac Runoff Volume = 0.960 of Average Runoff Depth = 0.25" 94.69% Pervious = 42.883 ac 5.31% Impervious = 2.407 ac Pre -Development PRE-DEV-GLENWOOD RD POND- TOTAL 10-13-2022 Type/1 24-hr 1-yr Rainfall=3.03" Prepared by (enter your company name here) Printed 1/13/2023 HydroCAD® 9.10 s/n 07054 ©2010 HydroCAD Software Solutions LLC Page 3 Summary for Subcatchment 1 S: Pre_ONSITE Runoff = 0.04 cfs @ 12.44 hrs, Volume= 0.012 af, Depth= 0.20" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=3.03" Area (ac) CN Descriotion 0.703 55 Woods, Good, HSG B 0.007 98 Paved parking, HSG B 0.710 55 Weighted Average 0.703 99.01 % Pervious Area 0.007 0.99% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 29.6 Direct Entry, Summary for Subcatchment 4S: Pre—OFFSITE Runoff = 4.11 cfs @ 12.38 hrs, Volume= 0.948 af, Depth= 0.26" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=3.03" Area (ac) CN Descriotion 2.400 98 Paved parking, HSG B 42.180 55 Woods, Good, HSG B 44.580 57 Weighted Average 42.180 94.62% Pervious Area 2.400 5.38% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 29.6 Direct Entry, Summary for Link 2L: POA Inflow Area = 45.290 ac, 5.31 % Impervious, Inflow Depth = 0.25" for 1-yr event Inflow = 4.15 cfs @ 12.38 hrs, Volume= 0.960 of Primary = 4.15 cfs @ 12.38 hrs, Volume= 0.960 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Pre -Development PRE-DEV-GLENWOOD RD POND- TOTAL 10-13-2022 Type/1 24-hr 10-yr Rainfall=5.53" Prepared by {enter your company name here} Printed 1/13/2023 HydroCAD® 9.10 s/n 07054 ©2010 HydroCAD Software Solutions LLC Page 4 Time span=5.00-48.00 hrs, dt=0.05 hrs, 861 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Pre_ONSITE Runoff Area=0.710 ac 0.99% Impervious Runoff Depth=1.26" Tc=29.6 min CN=55 Runoff=0.65 cfs 0.074 of Subcatchment 4S: Pre—OFFSITE Runoff Area=44.580 ac 5.38% Impervious Runoff Depth=1.40" Tc=29.6 min CN=57 Runoff=47.17 cfs 5.194 of Link 2L: POA Inflow=47.82 cfs 5.269 of Primary=47.82 cfs 5.269 of Total Runoff Area = 45.290 ac Runoff Volume = 5.269 of Average Runoff Depth = 1.40" 94.69% Pervious = 42.883 ac 5.31% Impervious = 2.407 ac Pre -Development PRE-DEV-GLENWOOD RD POND- TOTAL 10-13-2022 Type/1 24-hr 10-yr Rainfall=5.53" Prepared by (enter your company name here) Printed 1/13/2023 HydroCAD® 9.10 s/n 07054 @ 2010 HydroCAD Software Solutions LLC Page 5 Summary for Subcatchment 1 S: Pre_ONSITE Runoff = 0.65 cfs @ 12.28 hrs, Volume= 0.074 af, Depth= 1.26" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=5.53" Area (ac) CN Descriotion 0.703 55 Woods, Good, HSG B 0.007 98 Paved parking, HSG B 0.710 55 Weighted Average 0.703 99.01 % Pervious Area 0.007 0.99% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 29.6 Direct Entry, Summary for Subcatchment 4S: Pre—OFFSITE Runoff = 47.17 cfs @ 12.27 hrs, Volume= 5.194 af, Depth= 1.40" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=5.53" Area (ac) CN Descriotion 2.400 98 Paved parking, HSG B 42.180 55 Woods, Good, HSG B 44.580 57 Weighted Average 42.180 94.62% Pervious Area 2.400 5.38% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 29.6 Direct Entry, Summary for Link 2L: POA Inflow Area = 45.290 ac, 5.31 % Impervious, Inflow Depth = 1.40" for 10-yr event Inflow = 47.82 cfs @ 12.27 hrs, Volume= 5.269 of Primary = 47.82 cfs @ 12.27 hrs, Volume= 5.269 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Pre -Development PRE-DEV-GLENWOOD RD POND- TOTAL 10-13-2022 Type 11 24-hr 25-yr Rainfall=6.79" Prepared by {enter your company name here} Printed 1/13/2023 HydroCAD® 9.10 s/n 07054 ©2010 HydroCAD Software Solutions LLC Page 6 Time span=5.00-48.00 hrs, dt=0.05 hrs, 861 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Pre_ONSITE Runoff Area=0.710 ac 0.99% Impervious Runoff Depth=1.99" Tc=29.6 min CN=55 Runoff=1.12 cfs 0.118 of Subcatchment 4S: Pre—OFFSITE Runoff Area=44.580 ac 5.38% Impervious Runoff Depth=2.17" Tc=29.6 min CN=57 Runoff=78.67 cfs 8.079 of Link 2L: POA Inflow=79.79 cfs 8.197 of Primary=79.79 cfs 8.197 of Total Runoff Area = 45.290 ac Runoff Volume = 8.197 of Average Runoff Depth = 2.17" 94.69% Pervious = 42.883 ac 5.31% Impervious = 2.407 ac Pre -Development PRE-DEV-GLENWOOD RD POND- TOTAL 10-13-2022 Type 11 24-hr 25-yr Rainfall=6.79" Prepared by (enter your company name here) Printed 1/13/2023 HydroCAD® 9.10 s/n 07054 @ 2010 HydroCAD Software Solutions LLC Page 7 Summary for Subcatchment 1 S: Pre_ONSITE Runoff = 1.12 cfs @ 12.26 hrs, Volume= 0.118 af, Depth= 1.99" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 25-yr Rainfall=6.79" Area (ac) CN Descriotion 0.703 55 Woods, Good, HSG B 0.007 98 Paved parking, HSG B 0.710 55 Weighted Average 0.703 99.01 % Pervious Area 0.007 0.99% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 29.6 Direct Entry, Summary for Subcatchment 4S: Pre—OFFSITE Runoff = 78.67 cfs @ 12.26 hrs, Volume= 8.079 af, Depth= 2.17" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 25-yr Rainfall=6.79" Area (ac) CN Descriotion 2.400 98 Paved parking, HSG B 42.180 55 Woods, Good, HSG B 44.580 57 Weighted Average 42.180 94.62% Pervious Area 2.400 5.38% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 29.6 Direct Entry, Summary for Link 2L: POA Inflow Area = 45.290 ac, 5.31 % Impervious, Inflow Depth = 2.17" for 25-yr event Inflow = 79.79 cfs @ 12.26 hrs, Volume= 8.197 of Primary = 79.79 cfs @ 12.26 hrs, Volume= 8.197 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Pre -Development PRE-DEV-GLENWOOD RD POND- TOTAL 10-13-2022 Type // 24-hr 100-yr Rainfall=9.05" Prepared by {enter your company name here} Printed 1/13/2023 HydroCAD® 9.10 s/n 07054 ©2010 HydroCAD Software Solutions LLC Page 8 Time span=5.00-48.00 hrs, dt=0.05 hrs, 861 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Pre_ONSITE Runoff Area=0.710 ac 0.99% Impervious Runoff Depth=3.52" Tc=29.6 min CN=55 Runoff=2.11 cfs 0.209 of Subcatchment 4S: Pre—OFFSITE Runoff Area=44.580 ac 5.38% Impervious Runoff Depth=3.77" Tc=29.6 min CN=57 Runoff=143.14 cfs 14.005 of Link 2L: POA Inflow=145.25 cfs 14.214 of Primary=145.25 cfs 14.214 of Total Runoff Area = 45.290 ac Runoff Volume = 14.214 of Average Runoff Depth = 3.77" 94.69% Pervious = 42.883 ac 5.31% Impervious = 2.407 ac Pre -Development PRE-DEV-GLENWOOD RD POND- TOTAL 10-13-2022 Type // 24-hr 100-yr Rainfall=9.05" Prepared by (enter your company name here) Printed 1/13/2023 HydroCAD® 9.10 s/n 07054 @ 2010 HydroCAD Software Solutions LLC Page 9 Summary for Subcatchment 1 S: Pre_ONSITE Runoff = 2.11 cfs @ 12.25 hrs, Volume= 0.209 af, Depth= 3.52" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=9.05 Area (ac) CN Descriotion 0.703 55 Woods, Good, HSG B 0.007 98 Paved parking, HSG B 0.710 55 Weighted Average 0.703 99.01 % Pervious Area 0.007 0.99% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 29.6 Direct Entry, Summary for Subcatchment 4S: Pre—OFFSITE Runoff = 143.14 cfs @ 12.25 hrs, Volume= 14.005 af, Depth= 3.77" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=9.05 Area (ac) CN Descriotion 2.400 98 Paved parking, HSG B 42.180 55 Woods, Good, HSG B 44.580 57 Weighted Average 42.180 94.62% Pervious Area 2.400 5.38% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 29.6 Direct Entry, Summary for Link 2L: POA Inflow Area = 45.290 ac, 5.31 % Impervious, Inflow Depth = 3.77" for 100-yr event Inflow = 145.25 cfs @ 12.25 hrs, Volume= 14.214 of Primary = 145.25 cfs @ 12.25 hrs, Volume= 14.214 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-48.00 hrs, dt= 0.05 hrs SHIMP ENGINEERING, P.C. Design Focused Engineering Post -Development Stormwater Calculations: Post -Development Drainage Area Map Post- Development HydroCAD Analysis LEGEND ■ ■ ■ POST-DEV DA POST -UNMANAGED - ----- ,/ ' POST-DEV FOREST -WOOD POST-DEV IMPERVIOUS j --- POST-DEV TURF WATER FLOW DIRECTIONAL ARROW SOIL IIII4_11'. POST- TOC .._._ - LOD Hs6p B -- —Z—, IMP 0.25 \ — --_ ESE 1 ' DA 44.58 AC --- �i IMP 2.40 AC ___- FOREST 42.18 i SII e TOC 29.6 min ` 1 1 HSG: B HSG: B B 1 1 B POST-DEV DRAINAGE MAP GLENWOOD ROAD POND DATE: 13 January 2023 SHIMPENUNEENV6. P. C, IL �` ' ENGINEERING-L9NDPEANMNG-PROTECT MANAGEMENT as G� ,, , .12 EAST HIGH S v� aaeoa +umwe�iuv— wiwo.1. 200 0 200 400 600 Post -Development POST-DEV-GLENWOOD RD POND 10-13-2022 Type/1 24-hr 1-yr Rainfall=3.03" Prepared by {enter your company name here} Printed 1/13/2023 HydroCAD® 9.10 s/n 07054 ©2010 HydroCAD Software Solutions LLC Page 2 Time span=5.00-60.00 hrs, dt=0.05 hrs, 1101 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Post_ONSITE Runoff Area=0.490 ac 51.02% Impervious Runoff Depth=1.27" Tc=29.6 min CN=80 Runoff=0.53 cfs 0.052 of Subcatchment 3S: Post—OFFSITE Runoff Area=44.580 ac 5.38% Impervious Runoff Depth=0.26" Tc=29.6 min CN=57 Runoff=4.11 cfs 0.948 of Subcatchment 6S: Post-ONSITE Runoff Area=0.220 ac 0.00% Impervious Runoff Depth=0.38" Tc=5.0 min CN=61 Runoff=0.11 cfs 0.007 of Pond 3P: POND Peak Elev=643.57' Storage=4,159 cf Inflow=4.57 cfs 1.000 of Outflow=3.77 cfs 0.999 of Link 2L: POA Inflow=3.79 cfs 1.006 of Primary=3.79 cfs 1.006 of Total Runoff Area = 45.290 ac Runoff Volume = 1.007 of Average Runoff Depth = 0.27" 94.15% Pervious = 42.640 ac 5.W16 Impervious = 2.650 ac Post -Development POST-DEV-GLENWOOD RD POND 10-13-2022 Type/1 24-hr 1-yr Rainfall=3.03" Prepared by (enter your company name here) Printed 1/13/2023 HydroCAD@ 9.10 s/n 07054 @ 2010 HydroCAD Software Solutions LLC Page 3 Summary for Subcatchment 1S: Post_ONSITE Runoff = 0.53 cfs @ 12.25 hrs, Volume= 0.052 af, Depth= 1.27" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=3.03" Area (ac) CN Description 0.250 98 Paved parking, HSG B 0.240 61 >75% Grass cover, Good, HSG B 0.000 58 Woods/grass comb., Good, HSG B 0.490 80 Weighted Average 0.240 48.98% Pervious Area 0.250 51.02% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 29.6 Direct Entry, TOC POST Summary for Subcatchment 3S: Post—OFFSITE Runoff = 4.11 cfs @ 12.38 hrs, Volume= 0.948 af, Depth= 0.26" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 1-yr Rainfall=3.03" Area (ac) CN 2.400 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 42.180 55 Woods, Good, HSG B 44.580 57 Weighted Average 42.180 94.62% Pervious Area 2.400 5.38% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 29.6 Direct Entry, TOC POST Summary for Subcatchment 6S: Post-ONSITE UN -MANAGED Runoff = 0.11 cfs @ 11.99 hrs, Volume= 0.007 af, Depth= 0.38" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type 11 24-hr 1-yr Rainfall=3.03" Post -Development POST-DEV-GLENWOOD RD POND 10-13-2022 Type/1 24-hr 1-yr Rainfall=3.03" Prepared by {enter your company name here} Printed 1/13/2023 HydroCAD@ 9.10 s/n 07054 ©2010 HydroCAD Software Solutions LLC Page 4 Area (ac) CN Descriotion 0.000 98 Paved parking, HSG B 0.220 61 >75% Grass cover, Good, HSG B 0.000 58 Woods/grass comb., Good, HSG B 0.220 61 Weighted Average 0.220 100.00% Pervious Area Tc Length Slope Velocity Capacity Description 5.0 Direct Entry, TOC POST Summary for Pond 3P: POND Inflow Area = 45.070 ac, 5.88% Impervious, Inflow Depth = 0.27" for 1-yr event Inflow = 4.57 cfs @ 12.37 hrs, Volume= 1.000 of Outflow = 3.77 cfs @ 12.56 hrs, Volume= 0.999 af, Atten= 17%, Lag= 11.8 min Primary = 3.77 cfs @ 12.56 hrs, Volume= 0.999 of Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 643.57' @ 12.56 hrs Surf.Area= 11,859 sf Storage= 4,159 cf Plug -Flow detention time= 67.0 min calculated for 0.998 of (100% of inflow) Center -of -Mass det. time= 68.1 min ( 1,035.1 - 967.0 ) Volume Invert Avail.Storage Storage Description #1 643.20' 42,120 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 643.20 10,900 0 0 644.00 13,000 9,560 9,560 646.20 16,600 32,560 42,120 Device Routing Invert Outlet Devices #1 Primary 635.00' 36.0" Round 36" CMP Culvert L= 59.5' Ke= 0.350 Inlet / Outlet Invert= 635.00' / 633.00' S= 0.0336 '/' Cc= 0.900 n= 0.025 Corrugated metal #2 Device 1 643.20' 0.5' long Sharp -Crested Rectangular Weir 2 End Contraction(s) #3 Device 1 643.40' 60.0" Horiz. 60" CMP Standpipe C= 0.600 Limited to weir flow at low heads #4 Primary 644.35' 10.0' long (Profile 4) Emergency Spillway X 2.00 Head (feet) 0.49 0.98 1.48 Coef. (English) 2.77 2.97 3.21 PrimaryOutFlow Max=3.75 cfs @ 12.56 hrs HW=643.57' (Free Discharge) 1=36" CMP Culvert (Passes 3.75 cfs of 90.88 cfs potential flow) �2=Sharp-Crested Rectangular Weir (Weir Controls 0.31 cfs @ 1.98 fps) 3=60" CMP Standpipe (Weir Controls 3.44 cfs @ 1.33 fps) =Emergency Spillway ( Controls 0.00 cfs) Post -Development POST-DEV-GLENWOOD RD POND 10-13-2022 Type/1 24-hr 1-yr Rainfall=3.03" Prepared by {enter your company name here} Printed 1/13/2023 HydroCAD® 9.10 s/n 07054 ©2010 HydroCAD Software Solutions LLC Page 5 Summary for Link 2L: POA Inflow Area = 45.290 ac, 5.85% Impervious, Inflow Depth > 0.27" for 1-yr event Inflow = 3.79 cfs @ 12.56 hrs, Volume= 1.006 of Primary = 3.79 cfs @ 12.56 hrs, Volume= 1.006 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Post -Development POST-DEV-GLENWOOD RD POND 10-13-2022 Type // 24-hr 10-yr Rainfall=5.53" Prepared by {enter your company name here} Printed 1/13/2023 HVdroCAD® 9.10 s/n 07054 ©2010 HVdroCAD Software Solutions LLC Paae 6 Time span=5.00-60.00 hrs, dt=0.05 hrs, 1101 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Post_ONSITE Runoff Area=0.490 ac 51.02% Impervious Runoff Depth=3.36" Tc=29.6 min CN=80 Runoff=1.44 cfs 0.137 of Subcatchment 3S: Post—OFFSITE Runoff Area=44.580 ac 5.38% Impervious Runoff Depth=1.40" Tc=29.6 min CN=57 Runoff=47.17 cfs 5.194 of Subcatchment 6S: Post-ONSITE Runoff Area=0.220 ac 0.00% Impervious Runoff Depth=1.70" Tc=5.0 min CN=61 Runoff=0.66 cfs 0.031 of Pond 3P: POND Peak Elev=644.33' Storage=13,898 cf Inflow=48.59 cfs 5.332 of Outflow=46.92 cfs 5.330 of Link 2L: POA Inflow=47.01 cfs 5.362 of Primary=47.01 cfs 5.362 of Total Runoff Area = 45.290 ac Runoff Volume = 5.363 of Average Runoff Depth = 1.42" 94.15% Pervious = 42.640 ac 5.6516 Impervious = 2.650 ac Post -Development POST-DEV-GLENWOOD RD POND 10-13-2022 Type // 24-hr 10-yr Rainfall=5.53" Prepared by (enter your company name here) Printed 1/13/2023 HydroCAD@ 9.10 s/n 07054 @ 2010 HydroCAD Software Solutions LLC Page 7 Summary for Subcatchment 1S: Post_ONSITE Runoff = 1.44 cfs @ 12.24 hrs, Volume= 0.137 af, Depth= 3.36" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=5.53" Area (ac) CN Description 0.250 98 Paved parking, HSG B 0.240 61 >75% Grass cover, Good, HSG B 0.000 58 Woods/grass comb., Good, HSG B 0.490 80 Weighted Average 0.240 48.98% Pervious Area 0.250 51.02% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 29.6 Direct Entry, TOC POST Summary for Subcatchment 3S: Post—OFFSITE Runoff = 47.17 cfs @ 12.27 hrs, Volume= 5.194 af, Depth= 1.40" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 10-yr Rainfall=5.53" Area (ac) CN 2.400 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 42.180 55 Woods, Good, HSG B 44.580 57 Weighted Average 42.180 94.62% Pervious Area 2.400 5.38% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 29.6 Direct Entry, TOC POST Summary for Subcatchment 6S: Post-ONSITE UN -MANAGED Runoff = 0.66 cfs @ 11.97 hrs, Volume= 0.031 af, Depth= 1.70" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type 11 24-hr 10-yr Rainfall=5.53" Post -Development POST-DEV-GLENWOOD RD POND 10-13-2022 Type // 24-hr 10-yr Rainfall=5.53" Prepared by {enter your company name here} Printed 1/13/2023 HydroCAD@ 9.10 s/n 07054 ©2010 HydroCAD Software Solutions LLC Page 8 Area (ac) CN Descriotion 0.000 98 Paved parking, HSG B 0.220 61 >75% Grass cover, Good, HSG B 0.000 58 Woods/grass comb., Good, HSG B 0.220 61 Weighted Average 0.220 100.00% Pervious Area Tc Length Slope Velocity Capacity Description 5.0 Direct Entry, TOC POST Summary for Pond 3P: POND Inflow Area = 45.070 ac, 5.88% Impervious, Inflow Depth = 1.42" for 10-yr event Inflow = 48.59 cfs @ 12.27 hrs, Volume= 5.332 of Outflow = 46.92 cfs @ 12.33 hrs, Volume= 5.330 af, Atten= 3%, Lag= 3.5 min Primary = 46.92 cfs @ 12.33 hrs, Volume= 5.330 of Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 644.33' @ 12.33 hrs Surf.Area= 13,535 sf Storage= 13,898 cf Plug -Flow detention time= 16.9 min calculated for 5.326 of (100% of inflow) Center -of -Mass det. time= 18.1 min ( 912.5 - 894.4 ) Volume Invert Avail.Storage Storage Description #1 643.20' 42,120 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 643.20 10,900 0 0 644.00 13,000 9,560 9,560 646.20 16,600 32,560 42,120 Device Routing Invert Outlet Devices #1 Primary 635.00' 36.0" Round 36" CMP Culvert L= 59.5' Ke= 0.350 Inlet / Outlet Invert= 635.00' / 633.00' S= 0.0336 '/' Cc= 0.900 n= 0.025 Corrugated metal #2 Device 1 643.20' 0.5' long Sharp -Crested Rectangular Weir 2 End Contraction(s) #3 Device 1 643.40' 60.0" Horiz. 60" CMP Standpipe C= 0.600 Limited to weir flow at low heads #4 Primary 644.35' 10.0' long (Profile 4) Emergency Spillway X 2.00 Head (feet) 0.49 0.98 1.48 Coef. (English) 2.77 2.97 3.21 PrimaryOutFlow Max=46.64 cfs @ 12.33 hrs HW=644.32' (Free Discharge) 1=36" CMP Culvert (Passes 46.64 cfs of 95.32 cfs potential flow) �2=Sharp-Crested Rectangular Weir (Weir Controls 1.07 cfs @ 3.47 fps) 3=60" CMP Standpipe (Weir Controls 45.56 cfs @ 3.14 fps) =Emergency Spillway ( Controls 0.00 cfs) Post -Development POST-DEV-GLENWOOD RD POND 10-13-2022 Type // 24-hr 10-yr Rainfall=5.53" Prepared by {enter your company name here} Printed 1/13/2023 HydroCAD® 9.10 s/n 07054 @ 2010 HydroCAD Software Solutions LLC Page 9 Summary for Link 2L: POA Inflow Area = 45.290 ac, 5.85% Impervious, Inflow Depth = 1.42" for 10-yr event Inflow = 47.01 cfs @ 12.33 hrs, Volume= 5.362 of Primary = 47.01 cfs @ 12.33 hrs, Volume= 5.362 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Post -Development POST-DEV-GLENWOOD RD POND 10-13-2022 Type 1124-hr25-yr Rainfall=6.79" Prepared by {enter your company name here} Printed 1/13/2023 HydroCAD® 9.10 s/n 07054 ©2010 HydroCAD Software Solutions LLC Page 10 Time span=5.00-60.00 hrs, dt=0.05 hrs, 1101 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Post_ONSITE Runoff Area=0.490 ac 51.02% Impervious Runoff Depth=4.50" Tc=29.6 min CN=80 Runoff=1.92 cfs 0.184 of Subcatchment 3S: Post—OFFSITE Runoff Area=44.580 ac 5.38% Impervious Runoff Depth=2.17" Tc=29.6 min CN=57 Runoff=78.67 cfs 8.079 of Subcatchment 6S: Post-ONSITE Runoff Area=0.220 ac 0.00% Impervious Runoff Depth=2.55" Tc=5.0 min CN=61 Runoff=1.01 cfs 0.047 of Pond 3P: POND Peak Elev=644.63' Storage=18,062 cf Inflow=80.57 cfs 8.263 of Outflow=79.57 cfs 8.262 of Link 2L: POA Inflow=79.70 cfs 8.309 of Primary=79.70 cfs 8.309 of Total Runoff Area = 45.290 ac Runoff Volume = 8.310 of Average Runoff Depth = 2.20" 94.15% Pervious = 42.640 ac 5.8516 Impervious = 2.650 ac Post -Development POST-DEV-GLENWOOD RD POND 10-13-2022 Type 1124-hr25-yr Rainfall=6.79" Prepared by (enter your company name here) Printed 1/13/2023 HydroCAD@ 9.10 s/n 07054 @ 2010 HydroCAD Software Solutions LLC Page 11 Summary for Subcatchment 1S: Post_ONSITE Runoff = 1.92 cfs @ 12.23 hrs, Volume= 0.184 af, Depth= 4.50" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 25-yr Rainfall=6.79" Area (ac) CN Description 0.250 98 Paved parking, HSG B 0.240 61 >75% Grass cover, Good, HSG B 0.000 58 Woods/grass comb., Good, HSG B 0.490 80 Weighted Average 0.240 48.98% Pervious Area 0.250 51.02% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 29.6 Direct Entry, TOC POST Summary for Subcatchment 3S: Post—OFFSITE Runoff = 78.67 cfs @ 12.26 hrs, Volume= 8.079 af, Depth= 2.17" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 25-yr Rainfall=6.79" Area (ac) CN 2.400 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 42.180 55 Woods, Good, HSG B 44.580 57 Weighted Average 42.180 94.62% Pervious Area 2.400 5.38% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 29.6 Direct Entry, TOC POST Summary for Subcatchment 6S: Post-ONSITE UN -MANAGED Runoff = 1.01 cfs @ 11.96 hrs, Volume= 0.047 af, Depth= 2.55" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type 11 24-hr 25-yr Rainfall=6.79" Post -Development POST-DEV-GLENWOOD RD POND 10-13-2022 Type 1124-hr25-yr Rainfall=6.79" Prepared by {enter your company name here} Printed 1/13/2023 HydroCAD@ 9.10 s/n 07054 ©2010 HydroCAD Software Solutions LLC Page 12 Area (ac) CN Description 0.000 98 Paved parking, HSG B 0.220 61 >75% Grass cover, Good, HSG B 0.000 58 Woods/grass comb., Good, HSG B 0.220 61 Weighted Average 0.220 100.00% Pervious Area Tc Length Slope Velocity Capacity Description 5.0 Direct Entry, TOC POST Summary for Pond 3P: POND Inflow Area = 45.070 ac, 5.88% Impervious, Inflow Depth = 2.20" for 25-yr event Inflow = 80.57 cfs @ 12.26 hrs, Volume= 8.263 of Outflow = 79.57 cfs @ 12.29 hrs, Volume= 8.262 af, Atten= 1 %, Lag= 2.1 min Primary = 79.57 cfs @ 12.29 hrs, Volume= 8.262 of Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 644.63' @ 12.29 hrs Surf.Area= 14,029 sf Storage= 18,062 cf Plug -Flow detention time= 13.6 min calculated for 8.262 of (100% of inflow) Center -of -Mass det. time= 13.4 min ( 893.6 - 880.2 ) Volume Invert Avail.Storage Storage Description #1 643.20' 42,120 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 643.20 10,900 0 0 644.00 13,000 9,560 9,560 646.20 16,600 32,560 42,120 Device Routing Invert Outlet Devices #1 Primary 635.00' 36.0" Round 36" CMP Culvert L= 59.5' Ke= 0.350 Inlet / Outlet Invert= 635.00' / 633.00' S= 0.0336 '/' Cc= 0.900 n= 0.025 Corrugated metal #2 Device 1 643.20' 0.5' long Sharp -Crested Rectangular Weir 2 End Contraction(s) #3 Device 1 643.40' 60.0" Horiz. 60" CMP Standpipe C= 0.600 Limited to weir flow at low heads #4 Primary 644.35' 10.0' long (Profile 4) Emergency Spillway X 2.00 Head (feet) 0.49 0.98 1.48 Coef. (English) 2.77 2.97 3.21 PrimaryOutFlow Max=79.34 cfs @ 12.29 hrs HW=644.63' (Free Discharge) 1=36" CMP Culvert (Passes 71.25 cfs of 97.05 cfs potential flow) �2=Sharp-Crested Rectangular Weir (Weir Controls 1.39 cfs @ 3.91 fps) 3=60" CMP Standpipe (Weir Controls 69.85 cfs @ 3.62 fps) =Emergency Spillway (Weir Controls 8.10 cfs @ 1.46 fps) Post -Development POST-DEV-GLENWOOD RD POND 10-13-2022 Type 1124-hr25-yr Rainfall=6.79" Prepared by {enter your company name here} Printed 1/13/2023 HydroCAD® 9.10 s/n 07054 @ 2010 HydroCAD Software Solutions LLC Page 13 Summary for Link 2L: POA Inflow Area = 45.290 ac, 5.85% Impervious, Inflow Depth = 2.20" for 25-yr event Inflow = 79.70 cfs @ 12.29 hrs, Volume= 8.309 of Primary = 79.70 cfs @ 12.29 hrs, Volume= 8.309 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Post -Development POST-DEV-GLENWOOD RD POND 10-13-2022 Type // 24-hr 100-yr Rainfall=9.05" Prepared by {enter your company name here} Printed 1/13/2023 HVdroCAD® 9.10 s/n 07054 ©2010 HVdroCAD Software Solutions LLC Paoe 14 Time span=5.00-60.00 hrs, dt=0.05 hrs, 1101 points Runoff by SCS TR-20 method, UH=SCS Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Subcatchment 1S: Post_ONSITE Runoff Area=0.490 ac 51.02% Impervious Runoff Depth>6.62" Tc=29.6 min CN=80 Runoff=2.79 cfs 0.270 of Subcatchment 3S: Post—OFFSITE Runoff Area=44.580 ac 5.38% Impervious Runoff Depth=3.77" Tc=29.6 min CN=57 Runoff=143.14 cfs 14.005 of Subcatchment 6S: Post-ONSITE Runoff Area=0.220 ac 0.00% Impervious Runoff Depth=4.26" Tc=5.0 min CN=61 Runoff=1.69 cfs 0.078 of Pond 3P: POND Peak Elev=645.16' Storage=25,771 cf Inflow=145.92 cfs 14.276 of Outflow=142.48 cfs 14.274 of Link 2L: POA Inflow=142.69 cfs 14.353 of Primary=142.69 cfs 14.353 of Total Runoff Area = 45.290 ac Runoff Volume = 14.354 of Average Runoff Depth = 3.80" 94.15% Pervious = 42.640 ac 5.8516 Impervious = 2.650 ac Post -Development POST-DEV-GLENWOOD RD POND 10-13-2022 Type // 24-hr 100-yr Rainfall=9.05" Prepared by (enter your company name here) Printed 1/13/2023 HydroCAD@ 9.10 s/n 07054 @ 2010 HydroCAD Software Solutions LLC Page 15 Summary for Subcatchment 1S: Post_ONSITE Runoff = 2.79 cfs @ 12.23 hrs, Volume= 0.270 af, Depth> 6.62" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=9.05 Area (ac) CN Description 0.250 98 Paved parking, HSG B 0.240 61 >75% Grass cover, Good, HSG B 0.000 58 Woods/grass comb., Good, HSG B 0.490 80 Weighted Average 0.240 48.98% Pervious Area 0.250 51.02% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 29.6 Direct Entry, TOC POST Summary for Subcatchment 3S: Post—OFFSITE Runoff = 143.14 cfs @ 12.25 hrs, Volume= 14.005 af, Depth= 3.77" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type II 24-hr 100-yr Rainfall=9.05 Area (ac) CN 2.400 98 Paved parking, HSG B 0.000 61 >75% Grass cover, Good, HSG B 42.180 55 Woods, Good, HSG B 44.580 57 Weighted Average 42.180 94.62% Pervious Area 2.400 5.38% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 29.6 Direct Entry, TOC POST Summary for Subcatchment 6S: Post-ONSITE UN -MANAGED Runoff = 1.69 cfs @ 11.96 hrs, Volume= 0.078 af, Depth= 4.26" Runoff by SCS TR-20 method, UH=SCS, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Type 11 24-hr 100-yr Rainfall=9.05 Post -Development POST-DEV-GLENWOOD RD POND 10-13-2022 Type // 24-hr 100-yr Rainfall=9.05" Prepared by {enter your company name here} Printed 1/13/2023 HydroCAD® 9.10 s/n 07054 @ 2010 HydroCAD Software Solutions LLC Page 16 Area (ac) CN Descriotion 0.000 98 Paved parking, HSG B 0.220 61 >75% Grass cover, Good, HSG B 0.000 58 Woods/grass comb., Good, HSG B 0.220 61 Weighted Average 0.220 100.00% Pervious Area Tc Length Slope Velocity Capacity Description 5.0 Direct Entry, TOC POST Summary for Pond 3P: POND Inflow Area = 45.070 ac, 5.88% Impervious, Inflow Depth = 3.80" for 100-yr event Inflow = 145.92 cfs @ 12.25 hrs, Volume= 14.276 of Outflow = 142.48 cfs @ 12.30 hrs, Volume= 14.274 af, Atten= 2%, Lag= 2.8 min Primary = 142.48 cfs @ 12.30 hrs, Volume= 14.274 of Routing by Stor-Ind method, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs Peak Elev= 645.16' @ 12.30 hrs Surf.Area= 14,901 sf Storage= 25,771 cf Plug -Flow detention time= 9.9 min calculated for 14.274 of (100% of inflow) Center -of -Mass det. time= 9.6 min ( 873.4 - 863.8 ) Volume Invert Avail.Storage Storage Description #1 643.20' 42,120 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 643.20 10,900 0 0 644.00 13,000 9,560 9,560 646.20 16,600 32,560 42,120 Device Routing Invert Outlet Devices #1 Primary 635.00' 36.0" Round 36" CMP Culvert L= 59.5' Ke= 0.350 Inlet / Outlet Invert= 635.00' / 633.00' S= 0.0336 '/' Cc= 0.900 n= 0.025 Corrugated metal #2 Device 1 643.20' 0.5' long Sharp -Crested Rectangular Weir 2 End Contraction(s) #3 Device 1 643.40' 60.0" Horiz. 60" CMP Standpipe C= 0.600 Limited to weir flow at low heads #4 Primary 644.35' 10.0' long (Profile 4) Emergency Spillway X 2.00 Head (feet) 0.49 0.98 1.48 Coef. (English) 2.77 2.97 3.21 PrimaryOutFlow Max=142.20 cfs @ 12.30 hrs HW=645.16' (Free Discharge) 1=36" CMP Culvert (Barrel Controls 100.00 cfs @ 14.15 fps) �2=Sharp-Crested Rectangular Weir (Passes < 2.24 cfs potential flow) 3=60" CMP Standpipe (Passes < 119.82 cfs potential flow) =Emergency Spillway (Weir Controls 42.20 cfs @ 2.61 fps) Post -Development POST-DEV-GLENWOOD RD POND 10-13-2022 Type // 24-hr 100-yr Rainfall=9.05" Prepared by {enter your company name here} Printed 1/13/2023 HydroCAD® 9.10 s/n 07054 @ 2010 HydroCAD Software Solutions LLC Page 17 Summary for Link 2L: POA Inflow Area = 45.290 ac, 5.85% Impervious, Inflow Depth = 3.80" for 100-yr event Inflow = 142.69 cfs @ 12.30 hrs, Volume= 14.353 of Primary = 142.69 cfs @ 12.30 hrs, Volume= 14.353 af, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 5.00-60.00 hrs, dt= 0.05 hrs SHIM' ENGINEERING, P.C. Design Focused Engineering Independent Reports: NRCS Soils Report NOAA Precipitation Report USDA United States Department of Agriculture MRCS Natural Resources Conservation Service A product of the National Cooperative Soil Survey, a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local participants Custom Soil Resource Report for Albemarle County, Virginia October 22, 2021 Soil Map The soil map section includes the soil map for the defined area of interest, a list of soil map units on the map and extent of each map unit, and cartographic symbols displayed on the map. Also presented are various metadata about data used to produce the map, and a description of each soil map unit. 4EC 1.0 W 21C- 4fiC 436C 36C rt 83 55B 76 39D 21C 36C : r36D M \1 55B �5 ° 37D3 36D 4E 36B) 56B� 39E 3 W 6Dr 78 3'/ 40E � 36B 39E 10:ir �f 10 37D1113 36G 21D �; r w % 36C 4E 27C 1. 1. 3637E3( 8-3/v 39E 21C 336D � 4E $ 38Ev i e 1 `\� v 36D v �36C 616 v v 36D N% v `w r36C J `$ 36B 4E 36C 66E _ 36C `2DC3 ' 4E 56B 4`D- 37D3 56E a 36C 36D ' _ ` 4E 14C 37D3 v 26C3 `� Il 'a`�. 66E 36C i. W 36C 3 66E -' �36B 37C3 _. �... s► _ 37D3 &7C3 w-. 7 \37B3' t`' 36C , 7B' ' 4E 7B 36C 37D3 v 36D 36D G 56B.: 36B 36D 3fiC 37C3 / 37C3 41C 20D3 19B . "w 37C3 3,7D3- 37C3 i' 36C 76"� 56B •:.66E 36B �X/" 37G3� ^ S j;,37C3 56B;�. 4D �. 56B=66E s 36Bs36B _ ' MAPLEGEND Area of Interest (AOI) 0 Area of Interest (AOI) Soils Soil Map Unit Polygons N Soil Map Unit Lines Soil Map Unit Points Special Point Features V Blowout ® Borrow Pit Clay Spot O Closed Depression Gravel Pit Gravelly Spot O Landfill A. Lava Flow Marsh or swamp Mine or Quarry O Miscellaneous Water O Perennial Water y Rock Outcrop + Saline Spot Sandy Spot Severely Eroded Spot Q Sinkhole Slide or Slip J, Sodic Spot Custom Soil Resource Report MAP INFORMATION g Spoil Area The soil surveys that comprise your AOI were mapped at 1:15,800. o Stony Spot W Very Stony Spot Please rely on the bar scale on each map sheet for map measurements. Wet Spot Other Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Special Line Features Coordinate System: Web Mercator (EPSG:3857) Water Features Streams and Canals Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts Transportation distance and area. A projection that preserves area, such as the �..ry Rails Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. N Interstate Highways ti US Routes This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Major Roads Local Roads Soil Survey Area: Albemarle County, Virginia Background Survey Area Data: Version 15, Sep 13, 2021 . Aerial Photography Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: May 20, 2019—Aug 1, 2019 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. 10 Custom Soil Resource Report Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 4D Ashe loam, 15 to 25 percent 7.8 0.8% slopes 4E Ashe loam, 25 to 45 percent 255.5 26.8% slopes 7B Braddock loam, 2 to 7 percent 15.3 1.6% slopes 10 Ronda loamy sand, 0 to 2 2.6 0.3% percent slopes, frequently flooded 14C Chester loam, 7 to 15 percent 5.8 0.6% slopes 16 Codorus silt loam, 0 to 2 1.5 0.2% percent slopes, occasionally flooded 19B Minnieville loam, 2 to 7 percent 6.2 0.7% slopes 20C3 Minnieville clay loam, 7 to 15 82 0.9% percent slopes, severely eroded 20D3 Minnieville clay loam, 15 to 25 8.9 0.9% percent slopes, severely eroded 21C Culpeper fine sandy loam, 7 to 47.9 5.0% 15 percent slopes 21 D Culpeper fine sandy loam, 15 to 2.9 0.3% 25 percent slopes 26C3 Dyke clay loam, 7 to 15 percent 2.3 0.2% slopes, severely eroded 27C Elioak loam, 7 to 15 percent 3.1 0.3% slopes 36B Hayesville loam, 2 to 7 percent 29.6 3.1% slopes 36C Hayesville loam, 7 to 15 percent 177.7 18.6% slopes 36D Hayesville loam, 15 to 25 45.9 4.8% percent slopes 37B3 Hayesville clay loam, 2 to 7 13.4 1.4% percent slopes, severely eroded 37C3 Hayesville clay loam, 7 to 15 49.0 5.1% percent slopes, severely eroded 37D3 Hayesville clay loam, 15 to 25 58.8 6.2% percent slopes, severely eroded 11 Custom Soil Resource Report Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 37E3 Hayesville clay loam, 25 to 45 16.7 1.7% percent slopes, severely eroded 38E Hayesville loam, 25 to 45 2.7 0.3% percent slopes, very stony 39D Hazel loam, 15 to 25 percent 6.8 0.7% slopes 39E Hazel loam, 25 to 45 percent 21.2 2.2% slopes 40E Hazel loam, 25 to 45 percent 51.5 5.4% slopes, very stony 41C Yadkin loam, 7 to 15 percent 3.1 0.3% slopes 55B Danripple loam, 2 to 7 percent 11.6 1.2% slopes, rarely flooded 56B Meadowville loam, 2 to 7 26.5 2.8% percent slopes 66E Parker very stony loam, 25 to 41.4 4.3% 45 percent slopes 76 Dan River loam, 0 to 2 percent 11.4 1.2% slopes, occasionally flooded 83 Colvard fine sandy loam, 0 to 2 11.2 1.2% percent slopes, occasionally flooded W Water 6.8 0.7% Totals for Area of Interest 953.5 1 100.0% Map Unit Descriptions The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit. A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic class there are precisely defined limits for the properties of the soils. On the landscape, however, the soils are natural phenomena, and they have the characteristic variability of all natural phenomena. Thus, the range of some observed properties may extend beyond the limits defined for a taxonomic Gass. Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes. Consequently, every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils. Most minor soils have properties similar to those of the dominant soil or soils in the map unit, and thus they do not affect use and management. These are called noncentrasting, or similar, components. They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties if% Custom Soil Resource Report and behavioral characteristics divergent enough to affect use or to require different management. These are called contrasting, or dissimilar, components. They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with some characteristics of each. A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The objective of mapping is not to delineate pure taxonomic classes but rather to separate the landscape into Iandforms or Iandform segments that have similar use and management requirements. The delineation of such segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, however, onsite investigation is needed to define and locate the soils and miscellaneous areas. An identifying symbol precedes the map unit name in the map unit descriptions. Each description includes general facts about the unit and gives important soil properties and qualities. Soils that have profiles that are almost alike make up a soil series. Except for differences in texture of the surface layer, all the soils of a series have major horizons that are similar in composition, thickness, and arrangement. Soils of one series can differ in texture of the surface layer, slope, stoniness, salinity, degree of erosion, and other characteristics that affect their use. On the basis of such differences, a soil series is divided into soil phases. Most of the areas shown on the detailed soil maps are phases of soil series. The name of a soil phase commonly indicates a feature that affects use or management. For example, Alpha silt loam, 0 to 2 percent slopes, is a phase of the Alpha series. Some map units are made up of two or more major soils or miscellaneous areas. These map units are complexes, associations, or undifferentiated groups. A complex consists of two or more soils or miscellaneous areas in such an intricate pattern or in such small areas that they cannot be shown separately on the maps. The pattern and proportion of the soils or miscellaneous areas are somewhat similar in all areas. Alpha -Beta complex, 0 to 6 percent slopes, is an example. An association is made up of two or more geographically associated soils or miscellaneous areas that are shown as one unit on the maps. Because of present or anticipated uses of the map units in the survey area, it was not considered practical or necessary to map the soils or miscellaneous areas separately. The pattern and relative proportion of the soils or miscellaneous areas are somewhat similar. Alpha -Beta association, 0 to 2 percent slopes, is an example. An undifferentiated group is made up of two or more soils or miscellaneous areas that could be mapped individually but are mapped as one unit because similar interpretations can be made for use and management. The pattern and proportion of the soils or miscellaneous areas in a mapped area are not uniform. An area can be made up of only one of the major soils or miscellaneous areas, or it can be made up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example. 13 Custom Soil Resource Report Some surveys include miscellaneous areas. Such areas have little or no soil material and support little or no vegetation. Rock outcrop is an example. M Custom Soil Resource Report Albemarle County, Virginia 4D—Ashe loam, 15 to 25 percent slopes Map Unit Setting National map unit symbol: kbcl Elevation: 380 to 1,970 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Not prime farmland Map Unit Composition Ashe and similar soils: 80 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Ashe Setting Landform: Mountain slopes Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from granite and gneiss Typical profile H1 - 0 to 10 inches: loam H2 - 10 to 19 inches: loam H3 - 19 to 24 inches: sandy loam H4 - 24 to 79 inches: bedrock Properties and qualities Slope: 15 to 25 percent Depth to restrictive feature: 20 to 40 inches to lithic bedrock Drainage class: Somewhat excessively drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Very low to high (0.00 to 5.95 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Low (about 3.2 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 6e Hydrologic Soil Group: B Hydric soil rating: No 15 Custom Soil Resource Report 4E—Ashe loam, 25 to 45 percent slopes Map Unit Setting National map unit symbol: kbc2 Elevation: 380 to 2,250 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Not prime farmland Map Unit Composition Ashe and similar soils: 75 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Ashe Setting Landform: Mountain slopes Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from granite and gneiss Typical profile H1 - 0 to 10 inches: loam H2 - 10 to 19 inches: loam H3 - 19 to 24 inches: sandy loam H4 - 24 to 79 inches: bedrock Properties and qualities Slope: 25 to 45 percent Depth to restrictive feature: 20 to 40 inches to Iithic bedrock Drainage class: Somewhat excessively drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Very low to high (0.00 to 5.95 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Low (about 3.2 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 7e Hydrologic Soil Group: B Hydric soil rating: No Custom Soil Resource Report 713-13raddock loam, 2 to 7 percent slopes Map Unit Setting National map unit symbol: kbfb Elevation: 360 to 1,230 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: All areas are prime farmland Map Unit Composition Braddock and similar soils: 80 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Braddock Setting Landform: Fans Landform position (three-dimensional): Tread Down -slope shape: Convex Across -slope shape: Linear Parent material: Alluvium and colluvium derived from acid crystalline rocks Typical profile H1 - 0 to 8 inches: loam H2 - 8 to 79 inches: clay Properties and qualities Slope: 2 to 7 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: High (about 9.1 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2e Hydrologic Soil Group: B Hydric soil rating: No IVA Custom Soil Resource Report 10—Ronda loamy sand, 0 to 2 percent slopes, frequently flooded Map Unit Setting National map unit symbol: 2v7hn Elevation: 360 to 1,540 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Not prime farmland Map Unit Composition Ronda, frequently flooded, and similar soils: 85 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Ronda, Frequently Flooded Setting Landform: Flood plains Down -slope shape: Linear Across -slope shape: Linear Parent material: Sandy alluvium derived from igneous rock Typical profile Ap - 0 to 10 inches: loamy sand C1 - 10 to 43 inches: sand C2 - 43 to 79 inches: loamy sand Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Drainage class: Excessively drained Runoff class: Very low Capacity of the most limiting layer to transmit water (Ksat): High to very high (5.95 to 19.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: NoneFrequent Frequency of ponding: None Available water supply, 0 to 60 inches: Low (about 3.8 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 5w Hydrologic Soil Group: A Hydric soil rating: No MV Custom Soil Resource Report 14C—Chester loam, 7 to 15 percent slopes Map Unit Setting National map unit symbol: kb81 Elevation: 380 to 1,690 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Farmland of statewide importance Map Unit Composition Chester and similar soils: 80 percent Estimates are based on observations, Description of Chester descriptions, and transects of the mapunit. Setting Landform: Hillslopes Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from granite and gneiss Typical profile H1 - 0 to 7 inches: loam H2 - 7 to 41 inches: clay loam H3 - 41 to 79 inches: loam Properties and qualities Slope: 7 to 15 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Moderate (about 6.9 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 3e Hydrologic Soil Group: B Hydric soil rating: No 19 Custom Soil Resource Report 16—Codorus silt loam, 0 to 2 percent slopes, occasionally flooded Map Unit Setting National map unit symbol: 2v7hp Elevation: 360 to 1,540 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Prime farmland if drained and either protected from flooding or not frequently flooded during the growing season Map Unit Composition Codorus, occasionally flooded, and similar soils: 85 percent Minor components: 5 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Codorus, Occasionally Flooded Setting Landform: Flood plains Down -slope shape: Linear Across -slope shape: Linear Parent material: Residuum weathered from granite and gneiss Typical profile A - 0 to 8 inches: silt loam BA - 8 to 16 inches: silt loam Bwl - 16 to 26 inches: silty clay loam Bw2 - 26 to 40 inches: silty clay loam Bw3 - 40 to 79 inches: silt loam Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Drainage class: Somewhat poorly drained Runoff class: Very high Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: About 8 to 18 inches Frequency of flooding: NoneOccasional Frequency of ponding: None Available water supply, 0 to 60 inches: High (about 11.6 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 3w Hydrologic Soil Group: B/D Hydric soil rating: No 20 Custom Soil Resource Report Minor Components Hatboro, occasionally flooded Percent of map unit: 5 percent Landform: Flood plains Down -slope shape: Linear Across -slope shape: Linear Hydric soil rating: Yes 1913—Minnieville loam, 2 to 7 percent slopes Map Unit Setting National map unit symbol: 2v7hq Elevation: 360 to 1,540 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: All areas are prime farmland Map Unit Composition Minnieville and similar soils: 80 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Minnieville Setting Landform: Hillslopes Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from acid and basic igneous rock Typical profile Ap - 0 to 8 inches: loam Bt - 8 to 60 inches: clay C - 60 to 67 inches: clay Cr- 67 to 79 inches: bedrock Properties and qualities Slope: 2 to 7 percent Depth to restrictive feature: 60 to 120 inches to paralithic bedrock Drainage class: Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately high (0.00 to 0.20 iNhr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Moderate (about 7.6 inches) 21 Custom Soil Resource Report Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2e Hydrologic Soil Group: B Hydric soil rating: No 20C3—Minnieville clay loam, 7 to 15 percent slopes, severely eroded Map Unit Setting National map unit symbol: 2v7hv Elevation: 360 to 1,540 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Not prime farmland Map Unit Composition Minnieville, severely eroded, and similar soils: 80 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Minnieville, Severely Eroded Setting Landform: Hillslopes Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from acid and basic igneous rock Typical profile Ap - 0 to 8 inches: clay loam Bt - 8 to 60 inches: clay C - 60 to 67 inches: clay Cr- 67 to 79 inches: bedrock Properties and qualities Slope: 7 to 15 percent Depth to restrictive feature: 60 to 120 inches to paralithic bedrock Drainage class: Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately high (0.00 to 0.20 iNhr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Moderate (about 7.4 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 4e Hydrologic Soil Group: B PA Custom Soil Resource Report Hydric soil rating: No 20D3—Minnieville clay loam, 15 to 25 percent slopes, severely eroded Map Unit Setting National map unit symbol: 2v7hw Elevation: 360 to 1,540 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Not prime farmland Map Unit Composition Minnieville, severely eroded, and similar soils: 80 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Minnieville, Severely Eroded Setting Landform: Hillslopes Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from acid and basic igneous rock Typical profile Ap - 0 to 8 inches: clay loam Bt - 8 to 60 inches: clay C - 60 to 67 inches: clay Cr- 67 to 79 inches: bedrock Properties and qualities Slope: 15 to 25 percent Depth to restrictive feature: 60 to 120 inches to paralithic bedrock Drainage class: Well drained Runoff class: High Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately high (0.00 to 0.20 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Moderate (about 7.4 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 6e Hydrologic Soil Group: B Hydric soil rating: No 23 Custom Soil Resource Report 21C—Culpeper fine sandy loam, 7 to 15 percent slopes Map Unit Setting National map unit symbol: kb8l Elevation: 340 to 1,210 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Farmland of statewide importance Map Unit Composition Culpeper and similar soils: 80 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Culpeper Setting Landform: Hillslopes Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from meta-arkosic sandstone and quartzite Typical profile H1 - 0 to 8 inches: fine sandy loam H2 - 8 to 30 inches: clay H3 - 30 to 37 inches: sandy clay loam H4 - 37 to 45 inches: fine sandy loam H5 - 45 to 50 inches: bedrock H6 - 50 to 79 inches: bedrock Properties and qualities Slope: 7 to 15 percent Depth to restrictive feature: 40 to 79 inches to paralithic bedrock; 40 to 79 inches to lithic bedrock Drainage class: Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Very low to high (0.00 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Moderate (about 6.6 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 3e Hydrologic Soil Group: B Hydric soil rating: No 24 Custom Soil Resource Report 21 D—Culpeper fine sandy loam, 15 to 25 percent slopes Map Unit Setting National map unit symbol: kb8m Elevation: 340 to 1,180 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Farmland of statewide importance Map Unit Composition Culpeper and similar soils: 80 percent Estimates are based on observations, Description of Culpeper descriptions, and transects of the mapunit. Setting Landform: Hillslopes Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from meta-arkosic sandstone and quartzite Typical profile H1 - 0 to 8 inches: fine sandy loam H2 - 8 to 30 inches: clay H3 - 30 to 37 inches: sandy clay loam H4 - 37 to 45 inches: fine sandy loam H5 - 45 to 50 inches: bedrock H6 - 50 to 79 inches: bedrock Properties and qualities Slope: 15 to 25 percent Depth to restrictive feature: 40 to 79 inches to paralithic bedrock; 40 to 79 inches to lithic bedrock Drainage class: Well drained Runoff class: High Capacity of the most limiting layer to transmit water (Ksat): Very low to high (0.00 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Moderate (about 6.6 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 4e Hydrologic Soil Group: B Hydric soil rating: No 25 Custom Soil Resource Report 26C3—Dyke clay loam, 7 to 15 percent slopes, severely eroded Map Unit Setting National map unit symbol: 2xxxs Elevation: 360 to 1,540 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Not prime farmland Map Unit Composition Dyke, severely eroded, and similar soils: 85 percent Estimates are based on observations, descriptions, and transacts of the mapunit. Description of Dyke, Severely Eroded Setting Landform: Fans Landform position (two-dimensional): Footslope Landform position (three-dimensional): Base slope Down -slope shape: Concave Across -slope shape: Convex Parent material: Residuum weathered from greenstone Typical profile Ap - 0 to 8 inches: clay loam Btl - 8 to 43 inches: clay 2Bt2 - 43 to 79 inches: gravelly clay Properties and qualities Slope: 7 to 15 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: High (about 9.1 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 4e Hydrologic Soil Group: B Hydric soil rating: No Custom Soil Resource Report 27C—Elioak loam, 7 to 15 percent slopes Map Unit Setting National map unit symbol: kb8z Elevation: 340 to 820 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Farmland of statewide importance Map Unit Composition Elioak and similar soils: 80 percent Estimates are based on observations, Description of Elioak descriptions, and transects of the mapunit. Setting Landform: Hillslopes Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from mica schist Typical profile H1 - 0 to 8 inches: loam H2 - 8 to 39 inches: silty clay H3 - 39 to 79 inches: silt loam Properties and qualities Slope: 7 to 15 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat) (0.20 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Moderately high to high Available water supply, 0 to 60 inches: Moderate (about 6.6 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 3e Hydrologic Soil Group: B Hydric soil rating: No PAFA Custom Soil Resource Report 36B—Hayesville loam, 2 to 7 percent slopes Map Unit Setting National map unit symbol: 2xxy2 Elevation: 360 to 1,540 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: All areas are prime farmland Map Unit Composition Hayesville and similar soils: 80 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Hayesville Setting Landform: Hillslopes Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from granite and gneiss Typical profile A - 0 to 7 inches: loam Bt - 7 to 58 inches: clay BC - 58 to 67 inches: sandy clay loam C - 67 to 83 inches: fine sandy loam Properties and qualities Slope: 2 to 7 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: High (about 10.6 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2e Hydrologic Soil Group: B Hydric soil rating: No tZ Custom Soil Resource Report 36C—Hayesville loam, 7 to 15 percent slopes Map Unit Setting National map unit symbol: 2xxy4 Elevation: 360 to 1,540 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Farmland of statewide importance Map Unit Composition Hayesville and similar soils: 80 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Hayesville Setting Landform: Hillslopes Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from granite and gneiss Typical profile A - 0 to 7 inches: loam Bt - 7 to 58 inches: clay BC - 58 to 67 inches: sandy clay loam C - 67 to 83 inches: fine sandy loam Properties and qualities Slope: 7 to 15 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: High (about 10.6 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 4e Hydrologic Soil Group: B Hydric soil rating: No 29 Custom Soil Resource Report 36D—Hayesville loam, 15 to 25 percent slopes Map Unit Setting National map unit symbol: 2xxyl Elevation: 360 to 1,540 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Farmland of statewide importance Map Unit Composition Hayesville and similar soils: 80 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Hayesville Setting Landform: Hillslopes Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from granite and gneiss Typical profile A - 0 to 7 inches: loam Bt - 7 to 58 inches: clay BC - 58 to 67 inches: sandy clay loam C - 67 to 83 inches: fine sandy loam Properties and qualities Slope: 15 to 25 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Runoff class: High Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: High (about 10.6 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 6e Hydrologic Soil Group: B Hydric soil rating: No M Custom Soil Resource Report 37133-1-layesville clay loam, 2 to 7 percent slopes, severely eroded Map Unit Setting National map unit symbol: 2xxxy Elevation: 360 to 1,540 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Not prime farmland Map Unit Composition Hayesville, severely eroded, and similar soils: 80 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Hayesville, Severely Eroded Setting Landform: Hillslopes Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from granite and gneiss Typical profile A - 0 to 7 inches: clay loam Bt - 7 to 58 inches: clay BC - 58 to 67 inches: sandy clay loam C - 67 to 83 inches: fine sandy loam Properties and qualities Slope: 2 to 7 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: High (about 10.6 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 3e Hydrologic Soil Group: B Hydric soil rating: No 31 Custom Soil Resource Report 37C3—Hayesville clay loam, 7 to 15 percent slopes, severely eroded Map Unit Setting National map unit symbol: 2xxy0 Elevation: 360 to 1,540 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Not prime farmland Map Unit Composition Hayesville, severely eroded, and similar soils: 80 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Hayesville, Severely Eroded Setting Landform: Hillslopes Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from granite and gneiss Typical profile A - 0 to 7 inches: clay loam Bt - 7 to 58 inches: clay BC - 58 to 67 inches: sandy clay loam C - 67 to 83 inches: fine sandy loam Properties and qualities Slope: 7 to 15 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: High (about 10.6 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 4e Hydrologic Soil Group: B Hydric soil rating: No 0 Custom Soil Resource Report 37D3—Hayesville clay loam, 15 to 25 percent slopes, severely eroded Map Unit Setting National map unit symbol: 2xxxx Elevation: 360 to 1,540 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Not prime farmland Map Unit Composition Hayesville, severely eroded, and similar soils: 80 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Hayesville, Severely Eroded Setting Landform: Hillslopes Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from granite and gneiss Typical profile Ap - 0 to 8 inches: clay loam Bt - 8 to 60 inches: clay C - 60 to 67 inches: clay Properties and qualities Slope: 15 to 25 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Runoff class: High Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Moderate (about 7.4 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 6e Hydrologic Soil Group: B Hydric soil rating: No 33 Custom Soil Resource Report 37E3—Hayesville clay loam, 25 to 45 percent slopes, severely eroded Map Unit Setting National map unit symbol: 2xxxz Elevation: 360 to 1,540 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Not prime farmland Map Unit Composition Hayesville, severely eroded, and similar soils: 80 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Hayesville, Severely Eroded Setting Landform: Hillslopes Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from granite and gneiss Typical profile A - 0 to 7 inches: clay loam Bt - 7 to 58 inches: clay BC - 58 to 67 inches: sandy clay loam C - 67 to 83 inches: fine sandy loam Properties and qualities Slope: 25 to 45 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Runoff class: High Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: High (about 10.6 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 7e Hydrologic Soil Group: B Hydric soil rating: No 34 Custom Soil Resource Report 38E—Hayesville loam, 25 to 45 percent slopes, very stony Map Unit Setting National map unit symbol: 2xxy6 Elevation: 360 to 1,540 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Not prime farmland Map Unit Composition Hayesville, very stony, and similar soils: 75 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Hayesville, Very Stony Setting Landform: Hillslopes Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from granite and gneiss Typical profile A - 0 to 7 inches: loam Bt - 7 to 58 inches: clay BC - 58 to 67 inches: sandy clay loam C - 67 to 83 inches: fine sandy loam Properties and qualities Slope: 25 to 45 percent Surface area covered with cobbles, stones or boulders: 1.5 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Runoff class: High Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: High (about 10.6 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 7s Hydrologic Soil Group: B Hydric soil rating: No 9E Custom Soil Resource Report 39D—Hazel loam, 15 to 25 percent slopes Map Unit Setting National map unit symbol: kbb3 Elevation: 310 to 1,300 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Not prime farmland Map Unit Composition Hazel and similar soils: 80 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Hazel Setting Landform: Hillslopes Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from graywacke sandstone and mica schist Typical profile H1 - 0 to 10 inches: loam H2 - 10 to 20 inches: loam H3 - 20 to 30 inches: channery loam H4 - 30 to 79 inches: bedrock Properties and qualities Slope: 15 to 25 percent Depth to restrictive feature: 20 to 40 inches to lithic bedrock Drainage class: Excessively drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.20 to 5.95 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Low (about 4.1 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 4e Hydrologic Soil Group: B Hydric soil rating: No M Custom Soil Resource Report 39E—Hazel loam, 25 to 45 percent slopes Map Unit Setting National map unit symbol: 2yfh2 Elevation: 360 to 1,540 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Not prime farmland Map Unit Composition Hazel and similar soils: 80 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Hazel Setting Landform: Hillslopes Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from graywacke sandstone and mica schist Typical profile A - 0 to 10 inches: loam Bw - 10 to 20 inches: loam C - 20 to 30 inches: channery loam R - 30 to 79 inches: bedrock Properties and qualities Slope: 25 to 45 percent Depth to restrictive feature: 20 to 40 inches to lithic bedrock Drainage class: Excessively drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.20 to 5.95 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Low (about 4.1 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 7e Hydrologic Soil Group: B Hydric soil rating: No 37 Custom Soil Resource Report 40E—Hazel loam, 25 to 45 percent slopes, very stony Map Unit Setting National map unit symbol: 2xxy9 Elevation: 360 to 1,540 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Not prime farmland Map Unit Composition Hazel, very stony, and similar soils: 80 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Hazel, Very Stony Setting Landform: Hillslopes Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Residuum weathered from graywacke sandstone and mica schist Typical profile A - 0 to 10 inches: loam Bw - 10 to 20 inches: loam C - 20 to 30 inches: channery loam R - 30 to 79 inches: bedrock Properties and qualities Slope: 25 to 45 percent Surface area covered with cobbles, stones or boulders: 1.5 percent Depth to restrictive feature: 20 to 40 inches to lithic bedrock Drainage class: Excessively drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.20 to 5.95 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Low (about 4.1 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 7e Hydrologic Soil Group: B Hydric soil rating: No M Custom Soil Resource Report 41C—Yadkin loam, 7 to 15 percent slopes Map Unit Setting National map unit symbol: 2v7j4 Elevation: 320 to 450 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Farmland of statewide importance Map Unit Composition Yadkin and similar soils: 85 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Yadkin Setting Landform: Stream terraces Landform position (three-dimensional): Tread Down -slope shape: Convex Across -slope shape: Linear Parent material: Ancient alluvium derived from igneous rock Typical profile Ap - 0 to 8 inches: loam Bt - 8 to 79 inches: clay Properties and qualities Slope: 7 to 15 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Moderate (about 8.4 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 4e Hydrologic Soil Group: B Hydric soil rating: No 0 Custom Soil Resource Report 55B—Danripple loam, 2 to 7 percent slopes, rarely flooded Map Unit Setting National map unit symbol: 2v7js Elevation: 360 to 1,540 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: All areas are prime farmland Map Unit Composition Danripple, rarely flooded, and similar soils: 90 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Danripple, Rarely Flooded Setting Landform: Stream terraces Landform position (three-dimensional): Tread Down -slope shape: Convex Across -slope shape: Linear Parent material: Alluvium derived from igneous rock Typical profile Ap - 0 to 7 inches: loam Bt - 7 to 42 inches: clay BC - 42 to 52 inches: clay loam C - 52 to 79 inches: sandy clay loam Properties and qualities Slope: 2 to 7 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Runoff class: High Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 60 to 72 inches Frequency of flooding: Rare Frequency of ponding: None Available water supply, 0 to 60 inches: High (about 9.6 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2e Hydrologic Soil Group: C Hydric soil rating: No 40 Custom Soil Resource Report 56B—Meadowville loam, 2 to 7 percent slopes Map Unit Setting National map unit symbol: 2xxyc Elevation: 360 to 1,540 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: All areas are prime farmland Map Unit Composition Meadowville and similar soils: 85 percent Minor components: 5 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Meadowville Setting Landform: Interfluves Landform position (two-dimensional): Summit Landform position (three-dimensional): Interfluve Down -slope shape: Convex Across -slope shape: Convex Parent material: Colluvium derived from igneous rock Typical profile A - 0 to 14 inches: loam Bt - 14 to 46 inches: loam 2C - 46 to 79 inches: loam Properties and qualities Slope: 2 to 7 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Runoff class: Low Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 5.95 in/hr) Depth to water table: About 36 to 60 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: High (about 10.0 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2e Hydrologic Soil Group: A Hydric soil rating: No Minor Components Delila Percent of map unit: 5 percent 41 Custom Soil Resource Report Landform: Drainageways Landform position (two-dimensional): Footslope Landform position (three-dimensional): Head slope, tread Down -slope shape: Concave Across -slope shape: Convex Hydric soil rating: Yes 66E—Parker very stony loam, 25 to 45 percent slopes Map Unit Setting National map unit symbol: kbdc Elevation: 380 to 2,390 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Not prime farmland Map Unit Composition Parker and similar soils: 75 percent Estimates are based on observations, descriptions, and transacts of the mapunit. Description of Parker Setting Landform: Interfluves Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Down -slope shape: Linear Across -slope shape: Convex Parent material: Residuum weathered from granite and gneiss Typical profile H1 - 0 to 14 inches: extremely stony loam H2 - 14 to 38 inches: extremely cobbly loam H3 - 38 to 67 inches: very stony sandy loam H4 - 67 to 79 inches: bedrock Properties and qualities Slope: 25 to 45 percent Surface area covered with cobbles, stones or boulders: 7.0 percent Depth to restrictive feature: 48 to 80 inches to lithic bedrock Drainage class: Somewhat excessively drained Runoff class: Medium Capacity of the most limiting layer to transmit water (Ksat): Very low (0.00 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water supply, 0 to 60 inches: Low (about 5.6 inches) Interpretive groups Land capability classification (irrigated): None specified EK Custom Soil Resource Report Land capability classification (nonirrigated): 7s Hydrologic Soil Group: A Hydric soil rating: No 76—Dan River loam, 0 to 2 percent slopes, occasionally flooded Map Unit Setting National map unit symbol: 2v7jz Elevation: 360 to 1,540 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Prime farmland if protected from flooding or not frequently flooded during the growing season Map Unit Composition Dan river, occasionally flooded, and similar soils: 75 percent Minor components: 5 percent Estimates are based on observations, descriptions, and transects of the mapunit. Description of Dan River, Occasionally Flooded Setting Landform: Flood plains Down -slope shape: Linear Across -slope shape: Linear Parent material: Alluvium derived from igneous rock Typical profile A - 0 to 12 inches: loam Bw - 12 to 35 inches: silt loam C - 35 to 79 inches: silt loam Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Runoff class: Low Capacity of the most limiting layer to transmit water (Ksat) (0.57 to 1.98 in/hr) Depth to water table: About 36 to 60 inches Frequency of flooding: NoneOccasional Frequency of ponding: None Moderately high to high Available water supply, 0 to 60 inches: High (about 9.0 inches) Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2w Hydrologic Soil Group: B Hydric soil rating: No 43 Custom Soil Resource Report Minor Components Hatboro, occasionally flooded Percent of map unit: 5 percent Landform: Flood plains Down -slope shape: Linear Across -slope shape: Linear Hydric soil rating: Yes 83—Colvard fine sandy loam, 0 to 2 percent slopes, occasionally flooded Map Unit Setting National map unit symbol: 2v7k4 Elevation: 360 to 1,540 feet Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Prime farmland if protected from flooding or not frequently flooded during the growing season Map Unit Composition Colvard, occasionally flooded, and similar soils: 85 percent Minor components: 3 percent Estimates are based on observations, descriptions, and transacts of the mapunit. Description of Colvard, Occasionally Flooded Setting Landform: Flood plains Down -slope shape: Linear Across -slope shape: Linear Parent material: Alluvium derived from igneous rock Typical profile Ap - 0 to 9 inches: fine sandy loam C - 9 to 79 inches: sandy loam Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Runoff class: Very low Capacity of the most limiting layer to transmit water (Ksat) in/hr) Depth to water table: About 36 to 60 inches Frequency of flooding: NoneOccasional Frequency of ponding: None High (1.98 to 5.95 Available water supply, 0 to 60 inches: Moderate (about 6.6 inches) 44 Custom Soil Resource Report Interpretive groups Land capability classification (irrigated): None specified Land capability classification (nonirrigated): 2w Hydrologic Soil Group: A Hydric soil rating: No Minor Components Hatboro, occasionally flooded Percent of map unit: 3 percent Landform: Flood plains Down -slope shape: Linear Across -slope shape: Linear Hydric soil rating: Yes W—Water Map Unit Setting National map unit symbol: kbgk Mean annual precipitation: 25 to 65 inches Mean annual air temperature: 54 to 59 degrees F Frost -free period: 195 to 231 days Farmland classification: Not prime farmland Map Unit Composition Water: 100 percent Estimates are based on observations, descriptions, and transects of the mapunit. 45 NOAA Atlas 14, Volume 2, Version 3 Location name: Charlottesville, Virginia, USA*`r Latitude: 38.0683o, Longitude:-78.6201' Elevation: 749.5 ft** �A 'source: ESRI Maps -- source: USGS POINT PRECIPITATION FREQUENCY ESTIMATES G.M. Bonin, D. Martin, B. Lin, T. Parzybok, M.Yekta. and D. Riley NOAA, National Weather Service, Silver Spring, Maryland PF tabular I PF graphical I Maps & aerials PF tabular PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches)t Average recurrence interval (years) DuretiOn 7 2 5 70 25 50 1 100 00 200 500 7000 5-min (0.312 0382) (0.3673-0.457) (0.4 940.537) (0.40 604) (0.552-0679) (0.598-0..739) (06 39-0 796) (0.60 -0.850) (0.7119-0.918) (0.753-0 975) 1.31 70-min (08-0611) 4 9 (0.597-0.0 731) 0 (0.70 860) (0.78-0.965) 80- (0.81.08) (0.952-1.18) (1.021526) (1.07-21.35) : (14-IA5) : (19-18 .54) 1.73 75-min (0.622-0..763) (0.7 0-0919) (0. 889--11.09) (0.996-1.22) (1. 2-21537) (1.21-3149) (1.28-59) (1.35-11..70) (14 3-61583) 1 (14 9- .93) 0.945 7.75 1.40 1.60 1.85 2.04 2.22 2A0 2.63 2.80 30-min (0.853-1.05) 1 (1.04-1.27) 1 (1.26-1.55) 1 (1.441.77) 1 (1.65-2.03) (1.82-2.24) (1.97-2.45) (2.11-2.65) (2.28-2.91) (2.41-3.12) 2.09 60-min (1.06-.31) (1.30-1.59) (1.62-11..3) (1.88-2.30) (2.2�71) (2.463604) (2.713637) (2.96-3.71) (3.27-4.17) (3.524.56) 2-hr (1.25i60) (1.521294) (1.912543) (22 42.85) (2.65-3.39) (2. 932.85) (3.333.83 3-4.31) (3.67-4.80) (4.14550) (4.51 6709) 1.88 3.29 3-hr (1.37-154.76) (1.652.14) (2.07 259) (2.42 3614) (2. 8-3.74) (3. 5�424) (3.62-4.76) (4. 065.32) (4.516.09) 1 (49 3-6.75) 6-hr (1.77 224) (2. 342..71) (26 S3 37) (3: 0-3.96) (3. 0-4.76) (4.215.44) (47 3-6.18) (5.36.98) (6.04 6114) 8.10 (6.68-9.16) 11.2 72-hr (23-2.8 2.2) ) (2. -3.46) 9 (3.34-431) (3.945.09) (4.75-6..18) 4 (5.4715) (6.17821) (6.949738) (8.06� (9.03- 2.8) 203 4-hr (27 3-3.38) (3.31-4709) (4.21--65..22) 53 (4.956.15) (6.04-79 52) (695--8..70) (793-9.99) (8.WlIA) (10.5-13.6) (11.8-15.4) 2-0ey (3.22 3798) (3. 0-4282) (4.946.11) (6. 9-7.18) (6.99-8.71) (7.97 9098) (9.01--131.4) (1011-12.9) (117 5.2) (13.0-137.1) 3-day (3.45-4.21) (4. 85.10) (5.06.47) (62 0-7..58) (7.499?20) (8.5410.5) (9.65-2.0) (10.8- 3.6) (125- 6.0) (13.9-127.9) 4-day (3.68-4.45) (44 55.38) (5.646.83) (6.61--27599) (7.99 9.69) (9.10- 1.1) (10.3- 2.6) (11.6-14.3) (13A 16.7) (14.8- 8.8) 7. 8.19 7-day (42 9-5.11) (5: 66.15) (6: �69) (7.478.94) (8. 380.7) (10.1- 2.2) (114?13.8) (12745.5) (14.5- 8.0) (15.9- 0.1) 10-dey (469-5.75) (5.676.0) (72 38851) (8.329680) (9.83-1.6) (11.0-13.1) (12.3-14.7) (13.6-16.3) (15.3-18.7) (167- 0.7) 20 dey (6.52---7.49) (77 8-8.92) (9.37- 0.8) (10.6 2.2) (12.3-14.2) (13.6- 5.7) (14.9-17.3) (162- 9.0) (179-21.2) (19.2 3.0) 30 dey (8.05-9.13) (9.5510.8) (11.3-2.8) (12.6-14.3) (142--16.2) (185-167.7) (1678 9.2) (17.9- 0.6) (19.422.5) (20.6-24.0) 45-day (101U 1.3) 1 (11.9-13.4) 1 (13.9- 5.6) 1 (15.4137.3) 1 (172$ 9.4) 1 (18.6-21.0) 1 (19.9-22.6) (2121z24.1) (22245.1) (23.8-27.5) 60-day (11.9--13.2) (14.0-1-5.6) (16'1-167.9) (17'76- 9.7) (19z76--22.0) (2121z 3.6) (22.5 5.2) (2327-26.7) I (253--28.7) 11 (26.4 0.1) 1 Precipitation frequency (PF) estmates in this table are based on frequency analysis of partial duration series (PDS). Numbers in parenthesis are PF estimates at lower and upper bounds of the 90% confidence interval. The probability that precipitation frequency estimates (for a given duration and average recurrence interval) will be greater than the upper bound (or less than the lower bound) is 5%. Estimates at upper bounds are not checked against probable maximum precipitation (PMP) estimates and may be higher than currently valid PMP values. Please refer to NOAA Atias 14 document for more information. Back to Top PF graphical SHIMP ENGINEERING, P.C. Design Focused Engineering Appendix A: Rip -Rap Calculation GLENWOOD ROAD POND -RIP RAP CALCULATION DESIGN OF OUTLET PROTECTION FROM A ROUND PIPE FLOWING FULL MINIMUM TAILWATER CONDITION (TM � 0.5 DIAMETER) Outlet Pipe Diameter. Do La=20' W : Do + La r V. 70 Imo— —La —d v a I' i T w Ler < 0.5Dp A�ton eel 50 j .::: Since: Q10=47.23 CFS Use: D50=7„ RIP —RAP Do= 3.0 ft r 3Do=9.0 LO-20.0' W provideo=z.s.ur i Recommended Min. 7" dm-6- -----� 3 5 10 20 47.23 50 100 200 500 Discharqe. ft./sec. RIP —RAP A Q10=47.23 CFS 36" OUTLET PIPE. N 3 1.10 1000