The URL can be used to link to this page

Home My WebLink AboutWPO201300079 Calculations 2014-10-22 OWN 5th Street Station Stormwater Management Report PREPARED FOR S.J. Collins Enterprises, LLC a Riverbend Management,LLC a a 5th Street Station Albemarle County, Virginia BE #V122001 a BY BOH LER E N G I N E E R I N G .,. 28 BLACKWELL PARK LANE SUITE 201 WARRENTON,VA 20186 a (540)349-4500 September 30,2014 Revised October 22,2014 fa IANIEL RAY HINES 7 -o Lic. 176 a�. '0, !a Zy /4( `rs'ONA1-E� a a TABLE OF CONTENTS IWO Stormwater Management Narrative • Existing Conditions • Proposed Improvements • Stormwater Narrative • Water Quality Narrative • Adequate Outfall Narrative .b • System Operation Narrative • Conclusion • 10-Year Storm Outfall Structure Computations BMP Design Calculations • Chesapeake Bay—Situation 2 BMP Computations Spreadsheet NW • BMP Volume Calculations(for each facility) Filterra& Sandfilter Design Information .. • Filterra Summary Table • Sand Filter Summary Table • Sand Filter Sizing Computations(Sand Filters 1 thru 5) Vault"A" Design Data • Vault A Schematic • Vault A—Overall Design Information .. • Vault A—Orifice Sizing Computations Vault"A"Routing Computations OW • Pre-Development Routing Data • Post-Development Routing Data •W Vault"B"Design Data • Vault B Schematic • Vault B—Overall Design Information • Vault B—Orifice Sizing Computations Vault"B" Routing Computations • Pre-Development Routing Data OW • Post-Development Routing Data Vault"C" Design Data 11110 • Vault C Schematic • Vault C—Overall Design Information • Vault C—Orifice Sizing Computations Vault"C"Routing Computations • Pre-Development Routing Data .. • Post-Development Routing Data WW INIP Landfill Pond Design Data "- • Runoff Evaluation from Landfill • BMP Orifice Sizing Calculations • Anti-Floatation Calculations Landfill Pond Routing Computations • Pre-Development Routing Data • Post-Development Routing Data Landfill Pond Outfall Design • Outfall Routing Data • Channel Cross Sections Nit IMO Nil MOO VIM WIN STORMWATER MANAGEMENT NARRATIVE EXISTING CONDITIONS THE SUBJECT SITE IS 86.83 ACRES AND IS BORDERED TO THE NORTH BY MOORES CREEK AND A RESIDENTIAL DEVELOPMENT, TO THE EAST BY AN ABANDONED AVON STREET, TO THE SOUTH BY INTERSTATE 64, AND TO THE WEST BY 5TH STREET AND SEVERAL COMMERCIAL DEVELOPMENTS. CURRENTLY THE SITE IS VACANT AND MOSTLY WOODED WITH A LARGE DECIDUOUS TREE CANOPY CONSISTENT WITH A FORESTED CONDITION. THE EASTERNMOST 21.16 ACRE PARCEL IS AN ABANDONED COMMUNITY LANDFILL. A PARTIALLY PAVED DRIVEWAY EXISTS ON THE SITE WHICH CONNECTS FROM BENT CREEK ROAD TO AN ABANDONED WAREHOUSE FACILITY. THE TOPOGRAPHY IS VARIABLE WITH A RANGE OF SLOPES BETWEEN 1% TO 2:1. THE SITE GENERALLY DRAINS FROM THE SOUTHERN BOUNDARY WITH INTERSTATE 64 TO THE NORTHERN AND EASTERN BOUNDARIES WITH MOORE'S CREEK. THE ENTIRE SITE DRAINS TO EXISTING MOORE'S CREEK WHICH ULTIMATELY DRAINS TO THE RIVANNA RIVER. PROPOSED IMPROVEMENTS THIS APPLICATION PROPOSES FOR APPROXIMATELY 62 ACRES TO BE DEVELOPED WITH APPROXIMATELY 452,000 SF OF RETAIL AND RESTAURANT SPACE. THE PLANS ASSOCIATED WITH THIS PROJECT ARE THE WATER PROTECTION ORDINANCE (WPO) STORMWATER MANAGEMENT AND EROSION CONTROL PLAN PHASE II PLAN, A ROAD IMPROVEMENT PLAN FOR BENT CREEK PARKWAY ALONG THE NORTHERN BOUNDARY OF THE DEVELOPMENT, A SITE PLAN FOR THE WEGMANS BUILDING WITH ASSOCIATED GRADING, PARKING AND INFRASTRUCTURE IMPROVEMENTS, A WPO PHASE I PLAN TO PROPOSED E&S PHASE I CONTROLS AND CLEAR AND GRUB THE SITE, A STREAM MITIGATION PLAN FOR IMPACTS INTO THE MOORE'S CREEK BUFFER AREA, AND THE BENT CREEK ROAD PLAN WITHIN THE CITY OF CHARLOTTESVILLE. THE SITE PLAN THAT PROPOSES THE WEGMANS GROCERY STORE PROPOSES ROUGH GRADES FOR THE REST OF THE SHOPPING CENTER DEVELOPMENT AREA. FUTURE SITE PLANS WILL BE SUBMITTED TO ALBEMARLE COUNTY TO PROPOSE ADDITIONAL IMPROVEMENTS TO THE DEVELOPMENT. THE WPO PHASE II PLAN INCLUDES THE DESIGN FOR ALL STORMWATER MANAGEMENT FACILITIES INCLUDING THREE (3) UNDERGROUND STORMWATER MANAGEMENT (SWM) FACILITIES, AND A SWM POND PROPOSED ON THE LANDFILL PARCEL TO CONTROL A PORTION OF THE BENT CREEK PARKWAY RUNOFF. NOTE: AS ADDITIONAL SITE PLANS ARE SUBMITTED TO THE COUNTY, REVISIONS TO THIS WPO PHASE II PLAN MAY BE REQUIRED. - UNDERGROUND VAULTS A MAJORITY OF THE ONSITE STORMWATER RUNOFF WILL BE COLLECTED IN ONE OF ..,, THREE ONSITE STORM COLLECTION SYSTEMS THAT WILL THEN OUTFALL INTO ONE OF THE THREE UNDERGROUND SWM FACILITIES. AFTER THE STORMWATER RUNOFF LEAVES THE UNDERGROUND DETENTION FACILITIES, IT WILL DISCHARGE DIRECTLY INTO MOORE'S CREEK. THESE FACILITIES HAVE BEEN DESIGNED TO REDUCE THE POST DEVELOPED FLOWS THROUGH EXTENDED DETENTION TO BE LESS THAN PRE DEVELOPMENT FLOWS. THIS PROJECT PROPOSES AN ADEQUATE STORMWATER CONVEYANCE SYSTEM THAT CONVEYS THE 2-YEAR AND 10-YEAR FLOW TO MOORE'S CREEK IN A MANOR THAT IS NON-EROSIVE. MOORES CREEK HAS BEEN SHOWN TO BE AN ADEQUATE CHANNEL THAT CURRENTLY HANDLES 16,400 ACRES WITH AN APPROXIMATE FLOW OF10,100 CFS. (INFORMATION TAKEN FROM THE CONDITIONAL LETTER OF MAP REVISION PREPARED BY BOHLER ENGINEERING FOR 5TH STREET STATION). THIS DEVELOPMENT IS LESS THAN 1% OF THE CONTRIBUTING DRAINAGE AREA TO MOORE'S CREEK. FOR THE THREE (3) OUTFALLS PROPOSED, THIS APPLICATION DETERMINED THE PRE DEVELOPMENT FLOW RATE BY EVALUATING THE PRE-DEVELOPED OVERLAND DRAINAGE AREA FLOWING TO MOORE'S CREEK AT EACH OF THE PROPOSED OUTFALL LOCATIONS. THOSE OUTFALL LOCATIONS ARE NOTED AS POINT OF INTEREST A, B, AND C. THAT EVALUATION ESTABLISHED THE MAXIMUM ALLOWED POST DEVELOPMENT FLOW RATE AT EACH OUTFALL POINT. THE ACTUAL POST DEVELOPMENT FLOW FOR EACH OF THESE THREE (3) OUTFALLS WAS THEN DETERMINED BE THE ADDITION OF THE UNDETAINED FLOW+ THE OUTFALL FLOW FROM THE UNDERGROUND DETENTION SYSTEMS. AT EACH OUTFALL LOCATION THE PROPOSED UNDERGROUND SWM FACILITY HAS REDUCED THE 2 AND 10 YEAR POST DEVELOPED FLOWS TO BELOW PRE DEVELOPED FLOWS. THOSE RATES ARE SHOWN IN THE FOLLOWING TABLE. SUMMARY OF RESULTS 2 YEAR 10 YEAR SYSTEM A- PRE DEVELOPMENT 8.62 CFS 30.81 CFS SYSTEM A- POST DEVELOPMENT 7.39 CFS 27.34 CFS SYSTEM B- PRE DEVELOPMENT 14.66 CFS 40.10 CFS SYSTEM B - POST DEVELOPMENT 14.48 CFS 36.98 CFS SYSTEM C - PRE DEVELOPMENT 18.57 CFS 40.83 CFS , SYSTEM C - POST DEVELOPMENT 13.33 CFS 38.44 CFS NOTE: PLEASE REFER TO THE SWM CALCULATIONS IN THE STORMWATER MANAGEMENT REPORT FOR MORE DETAILED INFORMATION ON HOW THESE FLOWS WERE OBTAINED. LANDFILL POND THE LANDFILL POND HAS BEEN DESIGNED TO COLLECT AND REDUCE THE RUNOFF FROM THE ROADWAY AND PARK-AND-RIDE IMPROVEMENTS. FOR PURPOSES OF COMPARING THE POST-DEVELOPED FLOW TO THE PRE-DEVELOPED FLOW THE DESIGN CALCULATIONS EVALUATE THE ENTIRE LANDFILL PARCEL TO CONFIRM THAT THE FLOW FROM THE SITE HAS BEEN REDUCED. MOST OF THE NEW BENT CREEK PARKWAY RIGHT-OF-WAY ON THE LANDFILL PARCEL WILL BE COLLECTED IN A PROPOSED STORM SYSTEM AND CONTROLLED IN THE PROPOSED DRY POND. FROM THE POND THE FLOW WILL BE CONVEYED IN A MANMADE STORMWATER CONVEYANCE SYSTEM THAT IS ADEQUATE TO CONVEY THE 2-YEAR AND 10-YEAR FLOW WITHOUT CAUSING EROSION. THAT FLOW IS THEN Mi. DISCHARGED INTO A RIP-RAP BED (ENERGY DISSIPATOR) WITHIN THE 100-YEAR FLOODPLAIN OF MOORE'S CREEK. THE RIP-RAP AREA WILL ALLOW THE FLOW TO DISPERSE IN MULTIPLE DIRECTIONS. AS SUCH, A PORTION OF THE FLOW WILL BE DIVERTED TO EXISTING WETLANDS AND THE REMAINING FLOW WILL BE DIRECTED INTO THE EXISTING CHANNEL THAT FLOWS INTO MOORE'S CREEK. THE FLOW FROM THIS SITE IS LESS THAN 1% OF THE OVERALL FLOW TO THE CHANNEL PLUS THE SITE AREA IS LESS THAN 1% OF THE CONTRIBUTING DRAINAGE AREA OF THE CREEK. THIS FACILITY HAS BEEN DESIGNED SUCH THAT IT WILL REDUCE THE POST DEVELOPED FLOWS THROUGH EXTENDED DETENTION TO BE LESS THAN PRE DEVELOPMENT FLOWS. THIS POND HAS REDUCED 2 AND 10 YEAR POST DEVELOPED FLOWS AS SHOWN IN THE FOLLOWING TABLE TO BELOW PRE DEVELOPED FLOWS. SUMMARY OF RESULTS 2 YEAR 10 YEAR PRE-DEVELOPED FLOW 41.62 CFS 85.39 CFS POST-DEVELOPED FLOW 40.23 CFS 83.56 CFS WATER QUALITY NARRATIVE UNDERGROUND VAULT SYSTEM IN ORDER TO MEET THE REQUIRED POLLUTANT REMOVAL RATE, MULTIPLE SAND FILTER AND FILTERRA STRUCTURES HAVE BEEN PROPOSED AROUND THE SITE ALONG WITH THREE (3) UNDERGROUND SWM EXTENDED DETENTION FACILITIES. THE SANDFILTERS AND FILTERRA STRUCTURES UPSTREAM OF EACH VAULT ARE CONSIDERED TO BE "IN SERIES"WITH THE DOWNSTREAM UNDERGROUND DETENTION FACILITIES. THE SANDFILTERS HAVE BEEN DESIGNED AS A WASHINGTON D.C. UNDERGROUND VAULT SANDFILTER PER THE VIRGINIA STORMWATER MANAGEMENT HANDBOOK DESIGN GUIDELINES. THE FILTERRAS HAVE BEEN DESIGNED IN ACCORDANCE WITH THE PROPRIETARY DESIGN CRITERIA ESTABLISHED BY THE MANUFACTURER. THE SANDFILTERS HAVE A 65% REMOVAL RATE, THE FILTERRAS HAVE A 74% REMOVAL RATE, AND THE UNDERGROUND EXTENDED DETENTION PIPE SYSTEM HAS A 35% REMOVAL RATE. THE UNDERGROUND DETENTION FACILITIES HAVE BEEN DESIGNED WITH AN UNDERDRAIN TO SLOWLY RELEASE THE WATER QUALITY VOLUME PER THE DESIGN GUIDELINES. THE ATTACHED WATER QUALITY CALCULATIONS SHOW THAT THE PROVIDED POLLUTANT REMOVAL LOAD IS GREATER THAN THE REQUIRED REMOVAL LOAD. «. THEREFORE THE WATER QUALITY REQUIREMENTS ARE MET FOR THIS PROJECT. ADEQUATE OUTFALL NARRATIVE UNDERGROUND VAULT SYSTEMS STORMWATER RUNOFF FROM THE PROPOSED VAULT SYSTEMS WILL OUTFALL DIRECTLY INTO MOORE'S CREEK. ANALYSIS HAS BEEN DONE AT THE THREE (3) VAULT OUTFALL LOCATIONS TO SHOW THAT THE COMBINED FLOW FROM THE SITE AREA, WHICH INCLUDES THE VAULT SYSTEMS AND ANY BYPASS FLOW, IS LESS THAN PRE DEVELOPMENT FLOW AT THE SAME LOCATION. IN ADDITION, THE FLOW FROM os. THE UNDERGROUND FACILITIES IS CONVEYED THROUGH AN ADEQUATE MANMADE CONVEYANCE SYSTEM CREATING A NON-EROSIVE CONVEYANCE TO THE MOORE'S CREEK. MOORE'S CREEK CURRENTLY HAS A DRAINAGE AREA OF 16,400 ACRES. THIS DEVELOPMENT IS LESS THAN 1% OF THAT CONTRIBUTING DRAINAGE AREA. SINCE THE OUTFALLS ARE CONVEYED ADEQUATELY TO THROUGH A MANMADE CONVEYANCE SYSTEM TO A POINT WHERE THE SITE DRAINAGE AREA IS LESS THAN 1% OF THE CONTRIBUTING DRAINAGE AREA, IT IS THE OPINION OF THE ENGINEER �. THAT THE REQUIREMENTS OF 9VAC25-870-66 FOR WATER QUANTITY ARE MET. ,,. LANDFILL POND STORMWATER RUNOFF FROM THE POND ADJACENT TO THE PARK AND RIDE LOT IS PROPOSED TO OUTFALL INTO MOORE'S CREEK. MOORE'S CREEK CURRENTLY HAS A "' DRAINAGE AREA OF 16,400 ACRES. THIS LANDFILL PARCEL IS LESS THAN 1% OF THAT CONTRIBUTING DRAINAGE AREA. SINCE THE POND OUTFALL IS CONVEYED ADEQUATELY THROUGH A MANMADE CONVEYANCE SYSTEM TO A POINT WHERE THE SITE DRAINAGE AREA IS LESS THAN 1% OF THE CONTRIBUTING DRAINAGE AREA, IT IS THE OPINION OF THE ENGINEER THAT THE REQUIREMENTS OF 9VAC25-870-66 FOR WATER QUANTITY ARE MET. IN ADDITION, CROSS SECTIONS OF THE FLOW THROUGH THE UNNAMED CHANNEL HAVE BEEN PROVIDED TO SHOW THAT THE 2-YEAR STORM EVENT DOES NOT OVERTOP THE BED AND BANKS AND THAT THE VELOCITY IS NON-EROSIVE SINCE THE BED OF THE CREEK HAS BEEN DETERMINED (THROUGH OBSERVATION OF THE STREAM) TO BE BEDROCK. SYSTEM OPERATION NARRATIVE STORMWATER RUNOFF AROUND THE SITE WILL BE COLLECTED AND FILTERED AT THE COLLECTION POINT IN EITHER A FILTERRA STRUCTURE OR A SAND FILTER. THE OUTFALLS AND OVERFLOW BYPASS OF THOSE FACILITIES WILL THEN ENTER INTO A STORM CONVEYANCE SYSTEM WHICH WILL DIRECT THE RUNOFF TO THE RESPECTIVE UNDERGROUND DETENTION FACILITY OR POND. THE THREE (3) UNDERGROUND SYSTEMS HAVE BEEN DESIGNED TO BE PERFORATED CMP WITH 2' OF GRAVEL SURROUNDING THE ENTIRE SYSTEM AND 3' OF GRAVEL IN-BETWEEN EACH OF THE PIPES. BOTH THE GRAVEL AND PERFORATED PIPE IS BEING UTILIZED FOR STORAGE. AN UNDERDRAIN FOR EACH FACILITY HAS BEEN PROVIDED TO ALLOW THE REQUIRED WATER QUALITY VOLUME TO BUILD UP AND BE DETAINED .., FOR THE REQUIRED 30 HOUR DRAW DOWN RATE. AFTER THE BMP VOLUME IS CAPTURED, ADDITIONAL STORM RUNOFF WILL FLOW THROUGH THE CULVERT OUTFALL PIPES AND INTO THE SWM MANHOLE ADJACENT TO EACH FACILITY. THE CULVERT OUTFALLS ARE SIZED TO REDUCE THE POST DEVELOPMENT 2 AND 10 YEAR FLOWS TO BELOW THE PRE DEVELOPMENT LEVELS. FOR SYSTEM A, THERE ARE TWO (2) OUTFALL PIPES FOR THE UNDERDRAIN SYSTEM. ONE TIES INTO THE SWM MANHOLE AND THE SECOND TIES INTO THE BMP MANHOLE.. THIS BMP MANHOLE WILL EXTEND TO THE CURRENT EXISTING GRADE AND TIE INTO A SPRING BOX. THIS FLOW WILL JOIN FLOW FROM AN UNDERGROUND SPRING SYSTEM THAT IS PROPOSED AND DESIGNED WITH THE FINAL SITE PLAN. THIS ,., ALTERNATE CONNECTION WILL REMAIN CLOSED UNLESS IT IS DETERMINED THAT THE UNDERGROUND SPRING SYSTEM HAS DRIED UP. THIS OUTLET CAN BE OPENED SO THAT WATER CAN PASS THROUGH TO KEEP THE EXISTING WETLANDS FUNCTIONING AS THEY DID PRIOR TO DEVELOPEMENT. FOR SYSTEMS B&C, THE BMP VOLUME WILL OUTFALL THROUGH THE UNDERDRAINS INTO THE SAME MANHOLE THAT RECEIVES THE 2 AND 10 YEAR STORMS. CONCLUSION THE THREE (3) UNDERGROUND SWM FACILITIES WERE EACH DESIGNED TO REDUCE THE 2 YEAR AND 10 YEAR STORM EVENTS AT A RATE LESS THAN THE PRE- `"` DEVELOPED FLOW RATE. AS SHOWN IN THE SUMMARY OF RESULTS TABLE ABOVE, THE POST-DEVELOPED OUTFALL RATES ARE LESS THAN THE PRE-DEVELOPED FLOW RATES AT THE RECEIVING LOCATIONS IN MOORE'S CREEK. SINCE THE FLOW FROM THE UNDERGROUND SYSTEMS ARE CONVEYED ADEQUATELY THROUGH A MANMADE CONVEYANCE SYSTEM TO A POINT WHERE THE SITE DRAINAGE AREA IS LESS THAN 1% OF THE CONTRIBUTING DRAINAGE AREA, IT IS THE OPINION OF THE ENGINEER „�. THAT THE REQUIREMENTS OF 9VAC25-870-66 FOR WATER QUANTITY ARE MET. IN ADDITION TO REDUCING THE FLOW RATES, THE RUNOFF FROM THE CONTRIBUTING DRAINAGE AREAS WILL PASS THROUGH A COMBINATION OF A .m` FILTERRAS, SANDFILTERS AND THE RESPECTIVE UNDERGROUND DETENTION FACILITY WHICH WILL WORK IN SERIES TO REMOVE THE REQUIRED POLLUTANT LOAD. THE LANDFILL POND HAS BEEN SHOWN TO REDUCE FLOW RATES BELOW THE ALLOWABLE RELEASE FLOWS. SINCE THE POND OUTFALL IS CONVEYED ..� ADEQUATELY THROUGH A MANMADE CONVEYANCE SYSTEM TO A POINT WHERE THE SITE DRAINAGE AREA IS LESS THAN 1% OF THE CONTRIBUTING DRAINAGE AREA, IT IS THE OPINION OF THE ENGINEER THAT THE REQUIREMENTS OF 9VAC25-870-66 FOR WATER QUANTITY ARE MET. IT IS THE OPINION OF THE ENGINEER THAT THESE FACILITIES COMPLY WITH THE ALBEMARLE COUNTY AND THE COMMONWEALTH OF VIRGINIA REGULATIONS FOR STORMWATER MANAGEMENT FROM A QUALITY AND QUANTITY STANDPOINT AND THAT THIS DEVELOPMENT WILL HAVE NO NEGATIVE IMPACTS TO THE LAND AND MOORE'S CREEK DOWNSTREAM. OM a am > > > a Q E o o a C 3 30 3 0 0 LL LL LL 0 ar — a M0 OD N °' v� m O f 0 .-1 0 100 U) es . > I- (� V1 0 W l0 Cr M 10 CO l0 N N N N N0 00 .-, 10 10 01 v1 0 LL ti ff 00 01 N 1\ en to a .Ni .M-1 ti 1-.1 W > fir//HI//.. I- 5 LL CO N 100 100 N 0 0 M M N N LL N V N 0l N N IO N N M l0 00 10 ® Q U a N N N N N 10 M CO N N U 1■d ce — H 0) F W eta u O N N N N N N N N eO VI Cr N rl N N N 00 e-1 e- Q c o N W ION fli z 7 Z J . M en m m M m CO m m m M H 0 N 0 0 e4 0 0 0 0 0 Z> 0 0 0 0 O O 0 0 0 0 0 0 0 Z. 0 0 0 0 0 0 0 0 0 0 0 0 0 Q 0 1f� d 0 10 01 N N 0 0 01 10 M N lD N ul LL M O ri 0 ey U1 N N N l0 I� O O ti 0 0 O O O O O 0 0 0 0 LL 0 0 0 0 0 0 0 0 0 0 0 0 0 H = N ey O 01 O1 N (� 0 M O M O m a O p l0 l0 O ey n N ui V 00 0 W LL 00 Ol N N N Cl V N W O N M J .-f e-� rti c-1 ri C O V1 O O lr1 01 ul 0 0 O O O O W O N v1 O N O N p 0 0 0 0 0 H in Z d ti Ol 10 l0 O P. O N N 01 O 01 10 ai >/� Z 3 Cl lD l0 l0 Cl co O Cl t0 41 00 01 t0 �{�/ O en m en M M M M M M M tel M ION Z- - W F J > • ?W c 0 00 O u1 0 0 N 0 0 0 .-1 u1 0 W W 0 0 0 N Ir1 O 10 O O O CO N O er O. 00 6 01 00 O O O 1D lr1 N CO O1 N l0 10 Cl Cl 0 0 l0 CO 00 O N y en en M v M CO 00 00 M M M 00 M tio„ H 7 LL LL O' N d 00 00 V M M 00 co t�0 00 00 l0 O Z. U 4 00 4 4 ti V Ni 10 ti 41 00 u1 M M N N u mg Z J = N O 00 N LL C n n u1 U1 J2 C g 0 O O m a H z F f ui vi 0o n • Cf) v a 7 h M N N O N O O O O 'P` U u u OW Q c ® d v=.1 E .N-1 ee1 N 0 E 0 0 0 0 u c LL WIINF LL • Z O LLJ V 0000 001 001 001 7 0 0 0 0 0 IX W o y rIi11 ZC'Q NO , O O Ui g Q Q 0 0 0 0 0 0 Aiu W 0 Q Q Q Q to N M N N N a--1 Q N N cc S 2 2 S S w w Z U U 7 Q co U a H J I- _y J 7 7 H LO Q V/ vCt 01 Q G N 19 v1 V M r1 'c' N Z CO N u. ise i M r 1 M DESIGN CALCULATIONS M f.. . . 1 M. . VIRGINIA WATER QUALITY COMPUTATIONS: 1. AREAS: Total BMP Area: 59.42 AC. (does include R.O.W. dedication) BMP Design Area: 59.42 AC. (Total BMP Design Area) Total Green Area: 17.82 AC. (actual green area) Total Impervious Area: 41.60 AC. I (post) 70.0 % 2. I (pre) 16.0 % (Chesapeake Bay Average) 3. Situation 2 Existing impervious cover is less than proposed impervious cover. 4. L(pre) =[0.05 + (0.009 x!pre)] x A x 2.28 26.28 PPY =(0.05+(0.009*16.0))*59.42*2.28 5. L(post) =[0.05 + (0.009 x Ipost)]x A x 2.28 92.14 PPY =(0.05+(0.009*70.0))*59.42*2.28 6. RR =L (post) -L(pre) r► 65.85 PPY =92.14-26.28 7. EFF =(RR/L(post))x 100 71.47 % =65.85/92.14*100 ti.. 0. w. w.• 1111 Eft tor - ow iii -16 0 ® ° y aa + a4aa $ 0 / 5 NI- GGm N- ) mm m / § 1.• ~ . \ c a) E _ § 2 § Sam £ a f ) S J :: : ::: :::: :2-1® e k / & � � = ten o � oo § . OS ] ) _ °er o• \ \ \ \ / o, N. \ k \ a NW A A A k .. $ $ 2 a42 a4R2 $ a $ A? -6 E 00o o % o 0) 00 < E o 0 § a} aaz OD aaaz k - - w = = m = � « . 0) a> J / WOO 2a § ; ± §UD CD/ / § 00 a 111 4 0 } \ \ E OIL « � e ® / / / � 0 m2 X22 2 CV � our < � f ,c1: 06 aad a « § § / § § air ) / CD CD U . .2 0O ƒ k / / Z / = f«$ Q - ! o § E » » m a � o _ E 7 § $ � kc ZZ , ° r 2 - ; 0 � 2 $ , ,_ � « § 22 ; ] - . a % \ . \ - K 0 ) § E $ ° kk ■ ; 2 , � . co E - °- ee eo 22c � . g = § t ; ® oa ° < 0 o •, # » E ƒ o ± � QE2 « \ 20 ~ WC @ § ; $ « o_ ee '0 ± - ` < ± r < f < uu = @ ■ Z . 223 E20 ■ ° 2g o CO § & al @o , o , . -0 m ma - 2 0 $ © q � 6 & ƒ } ] /2j _1 ƒ J / Co I- f7 re } ate - ate • Goo - E - BMP COMPUTATION SUMMARY: Areas: miva Total BMP Area: 59.42 AC. (does include R.O.W. dedication) BMP Design Area: 59.42 AC. (Total BMP Design Area) ,r• Total Green Area: 17.82 AC. (actual green area) Total Impervious Area: 41.60 AC. Pollutant Computations: 6. Predevelopment Imperviousness 16.0 % (Chesapeake Bay Average) Postdevelopment Imperviousness 70.0 % (Total Impervious Area/BMP Design Area) ..� Predevelopment Pollutant Load 26.28 PPY Postdevelopment Pollutant Load 92.14 PPY (Based on the BMP Design area) Total Pollutant Removal Required 65.85 PPY Efficiency Required 71.5 % "'P Total Pollutant Removal Provided 67.57 PPY Efficiency Provided 73.3 % sir Total Removal Provided is greater than the Total Removal Required 67.57 PPY > 65.85 PPY 1u. BMP Volume Calculations Vault A- Extended Detention Area %Imp CA "" Total Area = 16.10 acre A 16.1 87.6% 14.10 Impervious Area = 14.1 acre B 11.6 87.1% 10.10 WQV required = 14.10 acre x 43,560 ft^2/acre x 0.5 in x 2 / 12 in/ft C 16.5 87.1% 14.40 "` = 51,183 ftA3 LF 6.8 25.8% 1.74 Vault B- Extended Detention Total Area = 11.60 acre Impervious Area = 10.1 acre WQV required = 10.10 acre x 43,560 ft^2/acre x 0.5 in x 2 / 12 in/ft = 36,663 ftA3 Vault C- Extended Detention Total Area = 16.53 acre Impervious Area = 14.4 acre WQV required = 14.40 acre x 43,560 ft^2/acre x 0.5 in x 2 / 12 in/ft = 52,272 ftA3 `" Landfill Pond-Extended Detention Total Area = 6.75 acre Impervious Area = 1.74 acre WQV required = 1.74 acre x 43,560 ft^2/acre x 0.5 in x 2 / 12 in/ft = 6,316 ftA3 a. OOP IIVAWADRAWl NG21Projects1121V1220011TechnicallEngineerlBMP DesignlBMP Volume.xlsx Page 1 of 1... Printed 10/23/2014 9:01 AM 9w FILTE 11 RA SANDFILTI- R DESIGN INFO 1' MATION auo ,.. ��[ |� �� SUMMA �7 ~��& �� l� �' �� / \�� &��/ � � ��/�� D.A. C Dimensions Inlet Type =° Structure (Ac.) Value (ft.) Opening (ft.) A6A 0.48 0.85 12 x 6 12 Standard ow A6B 0.71 0.85 13 x 7 13 Standard FT A7 0.42 0.85 10x6 8 FTIB-C __. A9A 0J8 0.50 10 x 10 Standard FT dm A11A 0.57 0.50 8 8 Standard FT Al2A 0.71 0.80 13 x 7 8 FTIB-C _�� A15A______ 0/45 0.85 10 x 6 8 FTIB-C -- A158 0.45 0.85 10 x 6 8 FTIB-C 0.28 0.80 8 x 6 4 FTIB-C 0.45 0.85 10 x6 8 FTIB-C so - ----------- ---- A25A 0.68 0.85 13 x 7 8 FTIB-C A26A 0.25 0.85 6 x 6 4 ____ _ FTIB-C == A28A 035 O�S 8x6 6 FTIB-C .-__ __-_ '_- ____-_ A29 0.17 0.85 8 x 4 6______ _ FTIB-C A30 __ 0.21 0.85___ 8 x 4 6 FTIB-C =O ___..A36 8.14 ___ 0.85__ 6 x 4 4 FTUB-C A38A 0.13 0.85 6 x 4 6 Standard FT A39 _____ 0.37 0J85 8 x 6 6 FTIB-C A42A 0.25 0.85 6 x 6 6 ____ Standard FT A42B 0.51 0.85 ___ 12 x 6 12 Standard FT ONO B7A______ 0.31 _ 0.85 8 x 6 6 FTIB-C G8A 0.67 0.85 13 x 7 13 ___ __ Standard FT Total 9.34 an = = ea = MN 'MN NW Ole NW ln u-1 CD I CD 0 ++ h r-, Ln in IA = 0 Lri iri tti, od r-: r-i, ,-.1 5 C I 0 0 0 0 1 0 OM t•) Lt lf) 0 V) C — 01 cri od ,-1 oti • r-I c-I r-I I N r-I cr d- ct i cl" d' Mrs m4., ..-.. 15 7 co oo oo oo I co 1- 3 1 .... x x x x x 1 k4 _c ..0 12:1 .21 to --'; cn I cn cn co L.r) .__ P11, ••••• , 1 ! NW , I ' E .6 = oo! co co leo I co co g a , I : i•. • , , , , m, m, mim, mi 1 , ... ut, , , , • , . 1 ...„ _. 4 I r...1 1r.1 ! r.1 dr m;i -0 03 ,. . eflro! m; d-lrn! , i • i , - ., .. , i ! c ....... . , , ! pr_i It: IT; "- 1 i , `-'■ w I- C :1 , 1 am• : 111 Z 3 I 1 I 1 I ...... i , , _,.. t,„„ , L,.., .E t • Ln 1 1-r), Lil, ....qu: ! 1 a) 0-1 a), --1; 00; a 00 ow 0 .:z- < 616161 ,-iIci; 14- (JJ E . , 1 i ! tillIP 120 c w U cr): cn cn (NI i oo; CS) .(71 CI ...LH< 6 i d I c3 I ,- cp.! d: s,-, ism T i■• i■, i■. : ei■ (1.)i an 11. tp: ; = No ,..; 4-0 I 44 i 4..■ 11.4. , W 0 F- -0 C C C C C: MO /ill Sand Filter #1 1. Determine Governing Site Parameters Impervious Area la (in acres) 0.95 AC Water Quality Volume (1/2" rainfall over the impervious area) WQV(in CF) =1815*la 1724 CF Pipe Diameter Dp in ft 8 ft 96 in Pipe Radius Rp in ft 4 ft Max. Water Height above invert 7.5 ft 2.Select Filter Depth and Determine Maximum Ponding Depth Filter Depth-Sand (df in ft) 2 ft Underdrain Depth (ft) 1 ft Total Filter Bed Depth (Dfb in ft) 3 Max Acheivable Ponding Depth over the filter(2h) 2h - Maximum Water Height above invert-filter depth +underdrain depth 2h = 4.5 h= 2.25 3.Compute the Minimum Area of the Sand Filter(Afm) AfmPS=(545*la*df)/(h+df) 244 SF Note: From this point forward, computations assume a circular pipe filter structure. 4.Select Filter Width and Compute Filter Length and Adjusted Filter Area Wf=2 * (RpA2-(Rp-Dfb)^2)^1/2 6.75 ft* *Actual Filter width in the pipe is 7.75'. This has been reduced by 1'to account for less media at pipe edge. Lf=Afm/Wf 37 ft Af=Wf* Lf 250 41111 ON 5.Compute the Storage Volume on Top of the Filter(VTf) .. Pipe Diameter 8 ft Max. Water Height above invert 7.5 ft .. Height of Air Space 0.5 ft Total Filter Bed Depth (Dfb in ft) 3 ft Pipe X-Section Area :APS=pi*RpA2 50.24 SF Area segment : Rp^2*(cos^-1)*((Rp-H)/Rp)-(Rp-H)*sgrt(2RpH-H^2) egi Area of Air Space(AAS) 1.87 SF Area of Filter X-Section (AFS) 17.22 SF wa Volume on top of filter : VTf= (APS-AAS-AFS)*Lf 1153 CF am 6.Compute the Storage in the Filter Voids(Vv)(assume 40%voids) gm Vv=0.4*AFS*Lf 255 CF 7.Compute Flow through Filter During Filling(VQ) MIN VQ=(k*Af*(df+h))/df 44 CF k=2ft/day or 0.833/hr r. 8.Compute Net Volume to be Stored Awaiting Filtration(Vst) Vst=WQV-VTf-Vv-VQ 273 CF .. 9. Compute Length of Permanent Pool(Lpm) Lpm= (Vst)/(APS-AAS-AFS) 9 ft 10.Compute Minimum Length of the Sediment Chamber(Lsc) ow (to contain 20%of WQV per Austin Practice) .. Lsc= (0.2*WQV)/(APS-AAS-AFS) 11 ft 11.Set Final Length of the Permanent Pool (Lp) op If Lpm >or= Lsc+2ft, make Lp=Lpm If Lpm<Lsc+2ft, make Lp=Lsc+2ft .• Lp= 9 ft Length of Pre-treatment Pool Lf= 37 ft Length of Sand Filter Bed length of clearwell (Lcw) min =3ft Total Length 49 .m. Total Width 8 MO Sand Filter #2 NO 1. Determine Governing Site Parameters Impervious Area la (in acres) 0.95 AC wo Water Quality Volume (1/2" rainfall over the impervious area) WQV(in CF) =1815*la 1724 CF Pipe Diameter Dp in ft 8 ft 96 in WIND Pipe Radius Rp in ft 4 ft Max. Water Height above invert 7.5 ft WIND 2.Select Filter Depth and Determine Maximum Ponding Depth Filter Depth-Sand (df in ft) 2 ft ma Underdrain Depth (ft) 1 ft Total Filter Bed Depth (Dfb in ft) 3 Max Acheivable Ponding Depth over the filter(2h) "' 2h-Maximum Water Height above invert-filter depth + underdrain depth 2h= 4.5 h= 2.25 rr 3.Compute the Minimum Area of the Sand Filter(Afm) `W AfmPS= (545*Ia*df)/(h+df) 244 SF Note: From this point forward, computations assume a circular pipe filter structure. sis 4.Select Filter Width and Compute Filter Length and Adjusted Filter Area our Wf=2 * (Rp^2-(Rp-Dfb)^2)^1/2 6.75 ft* *Actual Filter width in the pipe is 7.75'. This has been reduced by 1'to account for less media at pipe edge. Lf=Afm/Wf 37 ft gm Af=Wf* Lf 250 DWI IOW DWI WO r WY r. 5.Compute the Storage Volume on Top of the Filter(VTf) o` Pipe Diameter 8 ft Max.Water Height above invert 7.5 ft Height of Air Space 0.5 ft No Total Filter Bed Depth (Dfb in ft) 3 ft Pipe X-Section Area :APS=pi*Rp^2 50.24 SF Area segment : Rp^2*(cos^-1)*((Rp-H)/Rp)-(Rp-H)*sgrt(2RpH-H^2) se Area of Air Space (AAS) 1.87 SF Area of Filter X-Section (AFS) 17.22 SF .r Volume on top of filter : VTf= (APS-AAS-AFS)*Lf 1153 CF All 6.Compute the Storage in the Filter Voids(Vv)(assume 40%voids) MN Vv=0.4*AFS*Lf 255 CF 7.Compute Flow through Filter During Filling(VQ) IN VQ=(k*Af*(df+h))/df 44 CF k=2ft/day or 0.833/hr .r 8.Compute Net Volume to be Stored Awaiting Filtration(Vst) Vst=WQV-VTf-Vv-VQ 273 CF me 9.Compute Length of Permanent Pool(Lpm) MI Lpm = (Vst)/(APS-AAS-AFS) 9 ft 10.Compute Minimum Length of the Sediment Chamber(Lsc) No (to contain 20%of WQV per Austin Practice) Lsc=(0.2*WQV)/(APS-AAS-AFS) 11 ft .. 11. Set Final Length of the Permanent Pool (Lp) ,.r If Lpm >or= Lsc+2ft, make Lp=Lpm If Lpm<Lsc+2ft, make Lp=Lsc+2ft IMO Lp= 9 ft Length of Pre-treatment Pool Lf= 37 ft Length of Sand Filter Bed .. length of clearwell (Lcw) min =3ft Total Length 49 ,■, Total Width 8 Sand Filter #3 1. Determine Governing Site Parameters Impervious Area la (in acres) 0.95 AC Water Quality Volume (1/2" rainfall over the impervious area) WQV(in CF) =1815*la 1724 CF Pipe Diameter Dp in ft 8 ft 96 in Pipe Radius Rp in ft 4 ft Max.Water Height above invert 7.5 ft - 2.Select Filter Depth and Determine Maximum Ponding Depth Filter Depth-Sand (df in ft) 2 ft Underdrain Depth (ft) 1 ft Total Filter Bed Depth (Dfb in ft) 3 Max Acheivable Ponding Depth over the filter(2h) o" 2h- Maximum Water Height above invert-filter depth+underdrain depth 2h = 4.5 h= 2.25 sia 3.Compute the Minimum Area of the Sand Filter(Afm) AfmPS=(545*la*df)/(h+df) 244 SF Note: From this point forward,computations assume a circular pipe filter structure. 4.Select Filter Width and Compute Filter Length and Adjusted Filter Area 's. Wf=2 * (Rp^2 -(Rp-Dfb)^2)^1/2 6.75 ft* *Actual Filter width in the pipe is 7.75'. This has been reduced by 1'to account for less media at pipe edge. Lf=Afm/Wf 37 ft Af=Wf* Lf 250 NO WSW OW IWO 5.Compute the Storage Volume on Top of the Filter(VTf) Pipe Diameter 8 ft Max. Water Height above invert 7.5 ft Height of Air Space 0.5 ft Total Filter Bed Depth (Dfb in ft) 3 ft Pipe X-Section Area :APS=pi*RpA2 50.24 SF Area segment : Rp^2*(cos^-1)*((Rp-H)/Rp)-(Rp-H)*sgrt(2RpH-H^2) Area of Air Space(AAS) 1.87 SF Area of Filter X-Section (AFS) 17.22 SF Volume on top of filter:VTf=(APS-AAS-AFS)*Lf 1153 CF o.• 6.Compute the Storage in the Filter Voids(Vv)(assume 40%voids) Vv=0.4*AFS*Lf 255 CF 7.Compute Flow through Filter During Filling(VQ) VQ=(k*Af*(df+h))/df 44 CF k=2ft/day or 0.833/hr 8.Compute Net Volume to be Stored Awaiting Filtration(Vst) Vst=WQV-VTf-Vv-VQ 273 CF 9.Compute Length of Permanent Pool(Lpm) Lpm =(Vst)/(APS-AAS-AFS) 9 ft 10.Compute Minimum Length of the Sediment Chamber(Lsc) (to contain 20%of WQV per Austin Practice) Lsc=(0.2*WQV)/(APS-AAS-AFS) 11 ft 11. Set Final Length of the Permanent Pool (Lp) mop If Lpm >or= Lsc+2ft, make Lp=Lpm If Lpm<Lsc+2ft, make Lp=Lsc+2ft Lp= 9 ft Length of Pre-treatment Pool Lf= 37 ft Length of Sand Filter Bed wer length of clearwell (Lcw) min =3ft Total Length 49 aro Total Width 8 oro Sand Filter #4 1. Determine Governing Site Parameters Impervious Area la (in acres) 1.14 AC dill Water Quality Volume (1/2" rainfall over the impervious area) WQV(in CF) =1815*la 2069 CF Pipe Diameter Dp in ft 8 ft 96 in Pipe Radius Rp in ft 4 ft Max.Water Height above invert 7.5 ft 'o' 2.Select Filter Depth and Determine Maximum Ponding Depth Filter Depth -Sand (df in ft) 2 ft "` Underdrain Depth (ft) 1 ft Total Filter Bed Depth (Dfb in ft) 3 Max Acheivable Ponding Depth over the filter(2h) 2h-Maximum Water Height above invert-filter depth + underdrain depth 2h= 4.5 h= 2.25 3.Compute the Minimum Area of the Sand Filter(Afm) "" AfmPS=(545*Ia*df)/(h+df) 292 SF Note: From this point forward, computations assume a circular pipe filter structure. 4.Select Filter Width and Compute Filter Length and Adjusted Filter Area Wf=2 * (RpA2- (Rp-Dfb)^2)^1/2 6.75 ft* *Actual Filter width in the pipe is 7.75'. This has been reduced by 1'to account for less media at pipe edge. Lf=Afm/Wf 44 ft Ams Af=Wf* Lf 297 sio INN INK 5.Compute the Storage Volume on Top of the Filter(VTf) Pipe Diameter 8 ft Max. Water Height above invert 7.5 ft Height of Air Space 0.5 ft Total Filter Bed Depth (Dfb in ft) 3 ft Pipe X-Section Area :APS=pi*Rp^2 50.24 SF Area segment : Rp^2*(cos^-1)*((Rp-H)/Rp)-(Rp-H)*sgrt(2RpH-H^2) Area of Air Space(AAS) 1.87 SF Area of Filter X-Section (AFS) 17.22 SF Volume on top of filter: VTf= (APS-AAS-AFS)*Lf 1371 CF a.. 6.Compute the Storage in the Filter Voids(Vv)(assume 40%voids) Vv=0.4*AFS*Lf 303 CF 7.Compute Flow through Filter During Filling(VQ) VQ=(k*Af*(df+h))/df 53 CF k=2ft/day or 0.833/hr 8.Compute Net Volume to be Stored Awaiting Filtration(Vst) Vst=WQV-VTf-Vv-VQ 343 CF 9.Compute Length of Permanent Pool(Lpm) mor Lpm =(Vst)/(APS-AAS-AFS) 11 ft 10.Compute Minimum Length of the Sediment Chamber(Lsc) (to contain 20%of WQV per Austin Practice) Lsc=(0.2*WQV)/(APS-AAS-AFS) 13 ft 11. Set Final Length of the Permanent Pool (Lp) If Lpm >or= Lsc+2ft, make Lp=Lpm If Lpm<Lsc+2ft, make Lp=Lsc+2ft Lp= 11 ft Length of Pre-treatment Pool Lf= 44 ft Length of Sand Filter Bed length of clearwell (Lcw) min = 3ft Total Length 58 Total Width 8 Mrl Sand Filter #5 1. Determine Governing Site Parameters Impervious Area la (in acres) 0.86 AC Water Quality Volume(1/2" rainfall over the impervious area) WQV(in CF) =1815*la 1561 CF Pipe Diameter Dp in ft 8 ft 96 in Pipe Radius Rp in ft 4 ft Max. Water Height above invert 7.5 ft M"" 2.Select Filter Depth and Determine Maximum Ponding Depth Filter Depth-Sand (df in ft) 2 ft Underdrain Depth (ft) 1 ft Total Filter Bed Depth (Dfb in ft) 3 Max Acheivable Ponding Depth over the filter(2h) 2h - Maximum Water Height above invert-filter depth+underdrain depth 2h = 4.5 h= 2.25 Mr 3.Compute the Minimum Area of the Sand Filter(Afm) AfmPS=(545*Ia*df)/(h+df) 221 SF Note: From this point forward,computations assume a circular pipe filter structure. 4.Select Filter Width and Compute Filter Length and Adjusted Filter Area JIM Wf=2 * (RpA2-(Rp-Dfb)^2)^1/2 6.75 ft* *Actual Filter width in the pipe is 7.75'. This has been reduced by 1'to account for less media at pipe edge. Lf=Afm/Wf 33 ft MM Af=Wf* Lf 223 Mr Mr 1110 5.Compute the Storage Volume on Top of the Filter(VTf) Pipe Diameter 8 ft Max. Water Height above invert 7.5 ft Height of Air Space 0.5 ft Total Filter Bed Depth (Dfb in ft) 3 ft Pipe X-Section Area :APS=pi*Rp^2 50.24 SF Area segment : Rp^2*(cos^-1)*((Rp-H)/Rp)-(Rp-H)*sgrt(2RpH-H^2) Area of Air Space (AAS) 1.87 SF Area of Filter X-Section (AFS) 17.22 SF Volume on top of filter : VTf= (APS-AAS-AFS)*Lf 1028 CF 6.Compute the Storage in the Filter Voids(Vv)(assume 40%voids) Vv=0.4*AFS*Lf 227 CF 7.Compute Flow through Filter During Filling(VQ) VQ=(k*Af*(df+h))/df 39 CF k=2ft/day or 0.833/hr 8.Compute Net Volume to be Stored Awaiting Filtration (Vst) Vst=WQV-VTf-Vv-VQ 266 CF ow 9.Compute Length of Permanent Pool(Lpm) Lpm =(Vst)/(APS-AAS-AFS) 9 ft 10.Compute Minimum Length of the Sediment Chamber(Lsc) (to contain 20%of WQV per Austin Practice) iis Lsc=(0.2*WQV)/(APS-AAS-AFS) 10 ft 11. Set Final Length of the Permanent Pool (Lp) If Lpm >or= Lsc+2ft, make Lp=Lpm If Lpm<Lsc+2ft, make Lp=Lsc+2ft Lp= 9 ft Length of Pre-treatment Pool Lf= 33 ft Length of Sand Filter Bed .,. length of clearwell (Lcw) min =3ft Total Length 45 Total Width 8 im Mae irr its it airs IMF it iw erg VAULT "A" DESIGN DATA Area to Vault A 0 Vault A 0 1;4P A • • •.. Addlink 20 Bypass Area - A Out 10 taw VAULT A - OVERALL DESIGN INFORMATION System A Design Information ®"' Invert Information I Elevation Volume Table Bottom of System 397.60 Stage Elevation Total Volume Stone Invert below Pipe 397.60 0.00 397.60 0 op Stone Depth below Pipe 2 ft 0.50 398.10 3,033 Pipe Invert 399.60 1.00 398.60 6,066 Pipe Diameter 144 in = 12 ft 1.50 399.10 9,099 min Pipe Radius 72 in = 6 ft 2.00 399.60 12,132 Pipe Area 113.10 sf 2.50 400.10 18,024 Stone Invert above Pipe 411.60 3.00 400.60 23,915 sr Stone Depth above Pipe 2 3.50 401.10 29,807 Top of System 413.60 4.00 401.60 35,698 ,r. Height of System 16 ft 4.50 402.10 41,590 Spacing between Barrels 3 ft 5.00 402.60 47,481 Stone width around system 2 ft 5.50 403.10 53,373 « BMP am Stone Porosity 40.00% 6.00 403.60 59,264 System Layout Information 6.50 404.10 65,156 Number of Barrels 9 7.00 404.60 71,047 "I Number of Headers 2 7.50 405.10 76,939 Length per Barrel 83 ft 8.00 405.60 82,830 Length per Header 132 ft 8.50 406.10 88,722 a" Rectangular Footprint 136 ft x 111 ft 9.00 406.60 94,613 Storage Information 9.50 407.10 100,505 u• Storage Volume Required 163,000 cf 10.00 407.60 106,397 Pipe Storage Provided 114,341 cf 10.50 408.10 112,288 Stone Storage Provided 51,319 cf 11.00 408.60 118,180 es Total Storage Provided 165,661 cf 11.50 409.10 124,071 Stone Storage 12.00 409.60 129,963 Total Storage Provided 50,878 cf 12.50 410.10 135,854 .. Storage Below Pipes 12,077 cf 13.00 410.60 141,746 Storage along Sides of Pipes 26,724 cf 13.50 411.10 147,637 Storage Above Pipes 12,077 cf 14.00 411.60 153,529 14.50 412.10 156,562 Required 15.00 412.60 159,595 BMP Volume: 51,183 cf 15.50 413.10 162,628 me 16.00 413.60 165,661 "w w II MP Orifice Sizing Calculations �., 5th Street Station - Vault A Total Drainage Area = 16.1 ac. Impervious Area = 14.1 ac. Water Quality Volume WQV required = 2 x (0.5 in / 12) x (Imp Area x 43,560) = 51183 cf. Line BMP Storage Provided (from pond volume table) (a) 53373 cf. Max. Head (h) at the required BMP storage from the elevation-storage curve for the facilty. (b) 5 Peak outflow rate (Qp) at the max. head for a drawdown time of 30 hrs. [Qp = S/(0.5 x 3600 x 30)] 0.0000185185 x Line (a) = (c) 0.99 Required orifice area (A) [A = Qp / (0.6 x (64.4 x h))^0.5)] Line (c) / [0.6 x (64.4 x Line (b))^0.5] = (d) 0.09 Diameter of the circular orifice. 2.0 x (Line (d) / 3.1415927)^0.5 = (e) 0.34 ft 4.10 in (2" Min.) VAULT "A" " ROUTING COMPUTATIONS r. Table of Contents i um ma Table of Contents mom ****************** DESIGN STORMS SUMMARY ******************* Albemarle County Design Storms 1.01 ********************** TC CALCULATIONS ********************* ow PRE-DEV A Tc Calcs 2.01 rrr ********************** CM CALCULATIONS ********************* PRE-DEV A Runoff CN-Area 3.01 rrr ******************** RUNOFF HYDROGRAPHS ******************** PRE-DEV A Pre 2 Unit Hyd. Summary 4.01 Unit Hyd. (HYG output) 4.02 arr PRE-DEV A Pre 10 Unit Hyd. Summary 4.04 Unit Hyd. (HYG output) 4.05 mom um rr WIN rw OW rr S/N: Bentley Systems, Inc. ios Bentley PondPack (10.00.027.00) 9:04 PM 5/19/2014 rr um Type. . . . Design Storms Page 1.01 Name. . . . Albemarle County r File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm u" Title. . . Project Date: 11/28/2012 Project Engineer: Charlie Yowell Project Title: 5th Street and Avon Center Project Comments: r DESIGN STORMS SUMMARY Design Storm File,ID = Albemarle County mm Storm Tag Name = Pre 2 mm Data Type, File, ID = Synthetic Storm Typell 24hr Storm Frequency = 2 yr Total Rainfall Depth= 3.7000 in Duration Multiplier = 1 ,r, Resulting Duration = 1440.00 min Resulting Start Time= .00 min Step= 6.00 min End= 1440.00 min Storm Tag Name = Pre 10 mm Data Type, File, ID = Synthetic Storm Typell 24hr Storm Frequency = 10 yr Total Rainfall Depth= 5.6000 in mm Duration Multiplier = 1 Resulting Duration = 1440.00 min Resulting Start Time= .00 min Step= 6.00 min End= 1440.00 min w mm r mm MY MP w OM S/N: Bentley Systems, Inc. "' Bentley PondPack (10.00.027.00) 9:04 PM 5/19/2014 r Type. . . . Tc Calcs Page 2.01 Name. . . . PRE-DEV A ow File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm wr TIME OF CONCENTRATION CALCULATOR +0r WO Segment #1: Tc: TR-55 Sheet Mannings n .4000 Hydraulic Length 150.00 ft 2yr, 24hr P 3.7000 in Slope .053000 ft/ft r Avg.Velocity .13 ft/sec Segment #1 Time: 18.71 min O"` Segment #2: Tc: TR-55 Shallow Hydraulic Length 1311.00 ft Slope .065000 ft/ft — Unpaved Avg.Velocity 4.11 ft/sec or Segment #2 Time: 5.31 min Segment #3: Tc: TR-55 Channel ow Flow Area 320.0000 sq.ft Wetted Perimeter 41.00 ft Hydraulic Radius 7.80 ft r Slope .003000 ft/ft Mannings n .0350 Hydraulic Length 148.00 ft ,wr Avg.Velocity 9.17 ft/sec Segment #3 Time: .27 min so Total Tc: 24.29 min op or S/N: Bentley Systems, Inc. oo Bentley PondPack (10.00.027.00) 9:04 PM 5/19/2014 rr au Type. . . . Tc Calcs Page 2.02 Name. . . . PRE-DEV A File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm aw Tc Equations used. . . 41111 SCS TR-55 Sheet Flow ""' Tc = (.007 * ( (n * Lf) **0.8) ) / ( (P**.5) * (Sf**.4) ) Where: Tc = Time of concentration, hrs n = Mannings n am Lf = Flow length, ft P = 2yr, 24hr Rain depth, inches Sf = Slope, rr ___= SCS TR-55 Shallow Concentrated Flow Unpaved surface: „m V = 16.1345 * (Sf**0.5) Paved surface: V = 20.3282 * (Sf**0.5) NO Tc = (Lf / V) / (3600sec/hr) Where: V = Velocity, ft/sec w Sf = Slope, ft/ft Tc = Time of concentration, hrs Lf = Flow length, ft w am ®trr *r +r S/N: Bentley Systems, Inc. '~ Bentley PondPack (10.00.027.00) 9:04 PM 5/19/2014 wry ma Type. . . . Tc Calcs Page 2.03 Name. . . . PRE-DEV A or File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm r SCS Channel Flow R = Aq / Wp V = (1.49 * (R** (2/3) ) * (Sf**-0.5) ) / n Tc = (Lf / V) / (3600sec/hr) "r"' Where: R = Hydraulic radius Aq = Flow area, sq.ft. Wp = Wetted perimeter, ft V = Velocity, ft/sec A Sf = Slope, ft/ft n = Mannings n Tc = Time of concentration, hrs Lf = Flow length, ft r no err um as vim w w OP r S/N: Bentley Systems, Inc. m` Bentley PondPack (10.00.027.00) 9:04 PM 5/19/2014 mow alt Type. . . . Runoff CN-Area Page 3.01 Name. . . . PRE-DEV A File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm mos RUNOFF CURVE NUMBER DATA UP Impervious Area Adjustment Adjusted Soil/Surface Description CN acres %C %UC CM Woods - good (D Soils) 77 .420 77.00 ona Woods - good (B Soils) 55 16.200 55.00 Woods - good (C Soils) 70 5.750 70.00 so COMPOSITE AREA & WEIGHTED CN ---> 22.370 59.27 (59) WW OW WW1 S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 9:04 PM 5/19/2014 OR Type. . . . Unit Hyd. Summary Page 4.01 Name. . . . PRE-DEV A Tag: Pre 2 Event: 2 yr Mit File. . . . H:\l2\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm Storm. . . Typell 24hr Tag: Pre 2 arr SCS UNIT HYDROGRAPH METHOD STORM EVENT: 2 year storm moo Duration = 1440.00 min Rain Depth = 3.7000 in Rain Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vaul Rain File -ID = - Typell 24hr Unit Hyd Type = Default Curvilinear mom HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vaul HYG File - ID = - PRE-DEV A Pre 2 Tc = 24.29 min Drainage Area = 22.370 acres Runoff CN= 59 ®r► Computational Time Increment = 3.238 min Computed Peak Time = 731.81 min .r Computed Peak Flow = 8.79 cfs Time Increment for HYG File = 5.00 min Peak Time, Interpolated Output = 730.00 min mme Peak Flow, Interpolated Output = 8.62 cfs WARNING: The difference between calculated peak flow and interpolated peak flow is greater than 1.50% mom DRAINAGE AREA ID:PRE-DEV A s CN = 59 Area = 22.370 acres S = 6.9492 in 0.2S = 1.3898 in ar Cumulative Runoff .5764 in 46804 cu.ft aw HYG Volume. . . 46811 cu.ft (area under HYG curve) ***** SCS UNIT HYDROGRAPH PARAMETERS ***** mm Time Concentration, Tc = 24.286 min (ID: PRE-DEV A) Computational Incr, Tm = 3.238 min = 0.20000 Tp +m Unit Hyd. Shape Factor = 483.432 (37.46% under rising limb) K = 483.43/645.333, K = .7491 (also, K = 2/(1+(Tr/Tp) ) Receding/Rising, Tr/Tp = 1.6698 (solved from K = .7491) mr. Unit peak, qp = 62.62 cfs Unit peak time Tp = 16.190 min Unit receding limb, Tr = 64.762 min Total unit time, Tb = 80.952 min w 44111 S/N: Bentley Systems, Inc. mw Bentley PondPack (10.00.027.00) 9:04 PM 5/19/2014 .r two Type. . . . Unit Hyd. (HYG output) Page 4.02 Name. . . . PRE-DEV A Tag: Pre 2 Event: 2 yr r File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm Storm. . . Typell 24hr Tag: Pre 2 SCS UNIT HYDROGRAPH METHOD STORM EVENT: 2 year storm um Duration = 1440.00 min Rain Depth = 3.7000 in Rain Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vaul Rain File -ID = - TypelI 24hr Unit Hyd Type = Default Curvilinear +. HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vaul HYG File - ID = - PRE-DEV A Pre 2 Tc = 24.29 min Drainage Area = 22.370 acres Runoff CN= 59 Air Calc.Increment= 3.238 min Out.Incr.= 5.00 min HYG Volume = 46811 cu.ft HYDROGRAPH ORDINATES (cfs) - Time I Output Time increment = 5.00 min min Time on left represents time for first value in each row. 700.00 I .00 .01 .20 1.22 3.82 rw 725.00 I 7.00 8.62 8.31 6.86 5.48 750.00 4.54 3.81 3.25 2.82 2.51 775.00 I 2.28 2.11 1.97 1.84 1.74 800.00 I 1.66 1.59 1.53 1.47 1.42 rr 825.00 I 1.37 1.32 1.27 1.23 1.19 850.00 1.15 1.12 1.09 1.07 1.05 875.00 I 1.04 1.02 1.01 .99 .98 900.00 I .97 .95 .94 .92 .91 925.00 I .90 .88 .87 .85 .84 w 950.00 .82 .80 .79 .77 .76 975.00 .75 .74 .73 .72 .71 1000.00 I .71 .70 .70 .69 .69 1025.00 I .68 .68 .67 .67 .66 NW 1050.00 .66 .65 .64 .64 .63 1075.00 .63 .62 .62 .61 .60 1100.00 I .60 .59 .59 .58 .58 1125.00 I .57 .56 .56 .55 .55 'w' 1150.00 .54 .53 .53 .52 .51 1175.00 .51 .50 .49 .49 .48 1200.00 .48 .47 .46 .46 .45 1225.00 I .45 .45 .45 .45 .45 .w 1250.00 I .44 .44 .44 .44 .44 1275.00 I .44 .44 .44 .44 .44 1300.00 I .43 .43 .43 .43 .43 1325.00 I .43 .43 .43 .43 .43 um 1350.00 ) .42 .42 .42 .42 .42 1375.00 I .42 .42 .42 .42 .42 1400.00 I .41 .41 .41 .41 .41 1425.00 .41 .41 .41 .40 .39 vw -w r S/N: Bentley Systems, Inc. '"P Bentley PondPack (10.00.027.00) 9:04 PM 5/19/2014 op .r Type. . . . Unit Hyd. (HYG output) Page 4.03 Name. . . . PRE-DEV A Tag: Pre 2 Event: 2 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm Storm. . . Typell 24hr Tag: Pre 2 es HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min I Time on left represents time for first value in each row. us 1450.00 I .33 .24 .16 .10 .06 1475.00 I .03 .02 .01 .01 .00 1500.00 I .00 .00 .00 air ow ma OM rr +w MO MO OW +rr rr S/N: Bentley Systems, Inc. "r" Bentley PondPack (10.00.027.00) 9:04 PM 5/19/2014 wr mop Type. . . . Unit Hyd. Summary Page 4.04 Name. . . . PRE-DEV A Tag: Pre 10 Event: 10 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm sr Storm. . . Typell 24hr Tag: Pre 10 SCS UNIT HYDROGRAPH METHOD STORM EVENT: 10 year storm rr Duration = 1440.00 min Rain Depth = 5.6000 in Rain Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vaul Rain File -ID = - Typell 24hr Unit Hyd Type = Default Curvilinear .w. HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vaul HYG File - ID = - PRE-DEV A Pre 10 Tc = 24.29 min Drainage Area = 22.370 acres Runoff CN= 59 s Computational Time Increment = 3.238 min Computed Peak Time = 728.57 min or Computed Peak Flow = 31.21 cfs Time Increment for HYG File = 5.00 min Peak Time, Interpolated Output = 730.00 min Peak Flow, Interpolated Output = 30.81 cfs ma DRAINAGE AREA mo ID:PRE-DEV A CN = 59 Area = 22.370 acres S = 6.9492 in 0.2S = 1.3898 in Cumulative Runoff we 1.5884 in 128983 cu.ft HYG Volume. . . 129001 cu.ft (area under HYG curve) .rr ***** SCS UNIT HYDROGRAPH PARAMETERS ***** Time Concentration, Tc = 24.286 min (ID: PRE-DEV A) .r Computational Incr, Tm = 3.238 min = 0.20000 Tp Unit Hyd. Shape Factor = 483.432 (37.46% under rising limb) K = 483.43/645.333, K = .7491 (also, K = 2/ (1+(Tr/Tp) ) ,r,s Receding/Rising, Tr/Tp = 1.6698 (solved from K = .7491) Unit peak, qp = 62.62 cfs Unit peak time Tp = 16.190 min Unit receding limb, Tr = 64.762 min via Total unit time, Tb = 80.952 min mml S/N: Bentley Systems, Inc. orr Bentley PondPack (10.00.027.00) 9:04 PM 5/19/2014 rr r Type. . . . Unit Hyd. (HYG output) Page 4.05 Name. . . . PRE-DEV A Tag: Pre 10 Event: 10 yr MAR File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm Storm. . . Typell 24hr Tag: Pre 10 MIA SCS UNIT HYDROGRAPH METHOD STORM EVENT: 10 year storm .r Duration = 1440.00 min Rain Depth = 5.6000 in Rain Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vaul Rain File -ID = - Typell 24hr Unit Hyd Type = Default Curvilinear ow HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vaul HYG File - ID = - PRE-DEV A Pre 10 Tc = 24.29 min Drainage Area = 22.370 acres Runoff CN= 59 ,r,, Calc.Increment= 3.238 min Out.Incr.= 5.00 min HYG Volume = 129001 cu.ft HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min ow min Time on left represents time for first value in each row. 670.00 I .00 .00 .02 .07 .15 Mb 695.00 I .34 .77 1.93 4.75 10.69 720.00 I 19.98 28.57 30.81 27.31 21.38 745.00 I 16.32 12.98 10.53 8.73 7.40 770.00 I 6.45 5.76 5.25 4.84 4.49 795.00 I 4.21 3.99 3.81 3.65 3.50 .m 820.00 I 3.36 3.23 3.11 3.00 2.89 845.00 I 2.78 2.69 2.60 2.54 2.48 870.00 I 2.43 2.39 2.35 2.32 2.28 895.00 2.25 2.21 2.18 2.14 2.11 r 920.00 ( 2.07 2.04 2.00 1.96 1.93 945.00 1.89 1.85 1.81 1.78 1.74 970.00 1.70 1.67 1.65 1.63 1.61 995.00 1.60 1.58 1.57 1.55 1.54 - 1020.00 1.53 1.52 1.50 1.49 1.48 1045.00 I 1.46 1.45 1.44 1.42 1.41 1070.00 I 1.40 1.38 1.37 1.36 1.34 1095.00 I 1.33 1.32 1.30 1.29 1.27 OM 1120.00 I 1.26 1.25 1.23 1.22 1.20 1145.00 I 1.19 1.18 1.16 1.15 1.13 1170.00 I 1.12 1.10 1.09 1.07 1.06 1195.00 I 1.05 1.03 1.02 1.00 .99 MK 1220.00 I .98 .98 .97 .97 .96 1245.00 I .96 .96 .96 .95 .95 1270.00 .95 .95 .94 .94 .94 1295.00 .94 .93 .93 .93 .93 n. 1320.00 I .92 .92 .92 .92 .91 1345.00 I .91 .91 .91 .90 .90 1370.00 I .90 .90 .89 .89 .89 1395.00 I .89 .88 .88 .88 .87 up rr No S/N: Bentley Systems, Inc. "ft Bentley PondPack (10.00.027.00) 9:04 PM 5/19/2014 r um Type. . . . Unit Hyd. (HYG output) Page 4.06 Name. . . . PRE-DEV A Tag: Pre 10 Event: 10 yr rr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm Storm. . . Typell 24hr Tag: Pre 10 ma HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min Time on left represents time for first value in each row. -I 1420.00 I .87 .87 .87 .86 .86 1445.00 I .82 .70 .52 .34 .20 1470.00 .12 .07 .04 .03 .02 mm 1495.00 .01 .00 .00 .00 .00 OW OW WO me ma mu = OK OM OP .r WO S/N: Bentley Systems, Inc. mm Bentley PondPack (10.00.027.00) 9:04 PM 5/19/2014 as ow Appendix A A-1 MO Index of Starting Page Numbers for ID Names A Albemarle County. . . 1.01 — P PRE-DEV A. . . 2.01, 3.01, 4.01, 4.02, 4.04, 4.05 o w wow ow MO MK MO WO MK MO MK WO .r MK S/N: Bentley Systems, Inc. °1r' Bentley PondPack (10.00.027.00) 9:04 PM 5/19/2014 r■ MO Table of Contents i ar a` Table of Contents nc. ********************** MASTER SUMMARY ********************** Watershed Master Network Summary 1.01 ur ********************** TC CALCULATIONS ********************* am. AREA TO VAULT A Tc Calcs 2.01 BYPASS AREA - A Tc Calcs 2.03 aar ********************** CN CALCULATIONS ********************* ar AREA TO VAULT A Runoff CN-Area 3.01 BYPASS AREA - A Runoff CN-Area 3.02 rr *********************** HYG ADDITION *********************** so POI - A Node: Addition Summary 4.01 Node: Addition Summary 4.06 MO *********************** POND VOLUMES *********************** VAULT A Vol: Elev-Volume 5.01 rr ******************** OUTLET STRUCTURES ********************* rr Outlet 2 Outlet Input Data 6.01 MILaar, rr S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 ms Table of Contents ii +rr or Table of Contents (continued) Composite Rating Curve 6.06 *********************** POND ROUTING *********************** VAULT A OUT 2 Pond Routing Summary 7.01 Pond Routed HYG (total out) 7.02 mr VAULT A OUT 10 Pond Routing Summary 7.06 Pond Routed HYG (total out) 7.07 ow rr ma roa am AS AM rr MA OM rr S/N: Bentley Systems, Inc. ++� Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 AM we Type. . . . Master Network Summary Page 1.01 Name. . . . Watershed File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop rr MA MASTER DESIGN STORM SUMMARY NON Network Storm Collection: Albemarle County rr Total Depth Rainfall Return Event in Type RNF ID ,, 2 3.7000 Synthetic Curve TypeII 24hr 10 5.6000 Synthetic Curve TypeII 24hr MIN MASTER NETWORK SUMMARY SCS Unit Hydrograph Method r. (*Node=Outfall; +Node=Diversion;) (Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt) +r Max Return HYG Vol Qpeak Qpeak Max WSEL Pond Storage Node ID Type Event cu.ft Trun min cfs ft cu.ft ®r AREA TO VAULT A AREA 2 170875 715.00 70.57 AREA TO VAULT A AREA 10 279418 715.00 112.13 BYPASS AREA - A AREA 2 15899 730.00 2.99 ■r BYPASS AREA - A AREA 10 47843 725.00 13.41 *POI - A JCT 2 183703 730.00 7.39 *POI - A JCT 10 324191 725.00 27.34 rr VAULT A IN POND 2 170875 715.00 70.57 VAULT A IN POND 10 279418 715.00 112.13 mm VAULT A OUT POND 2 167805 760.00 4.62 407.05 99895 VAULT A OUT POND 10 276348 735.00 14.41 411.63 153739 MA NMI MA AM S/N: Bentley Systems, Inc. err Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 ma oo Type. . . . Tc Calcs Page 2.01 Name. . . . AREA TO VAULT A oo File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop or TIME OF CONCENTRATION CALCULATOR or Segment #1: Tc: User Defined Segment #1 Time: 5.00 min w Total Tc: 5.00 min w Calculated Tc < Min.Tc: Use Minimum To. . . Use Tc = 5.00 min or. oo r w woo r woo wr or S/N: Bentley Systems, Inc. woo Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 so Type. . . . Tc Calcs Page 2.02 Name. . . . AREA TO VAULT A wrr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop wr Tc Equations used. . . ow ___= User Defined um Tc = Value entered by user Where: Tc = Time of concentration or am ow OM MO OM MO MO MO MO OM NO S/N: Bentley Systems, Inc. '•" Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 aar em Type. . . . Tc Calcs Page 2.03 Name. . . . BYPASS AREA - A am File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop ma TIME OF CONCENTRATION CALCULATOR am mom Segment #1: Tc: TR-55 Sheet Mannings n .4000 am Hydraulic Length 150.00 ft 2yr, 24hr P 3.7000 in Slope .130000 ft/ft NO Avg.Velocity .19 ft/sec Segment #1 Time: 13.06 min air Segment #2: Tc: TR-55 Shallow Hydraulic Length 340.00 ft mm Slope .270000 ft/ft Unpaved Avg.Velocity 8.38 ft/sec ON Segment #2 Time: .68 min Segment #3: Tc: TR-55 Channel mm Flow Area 320.0000 sq.ft Wetted Perimeter 41.00 ft Hydraulic Radius 7.80 ft ' ' Slope .003000 ft/ft Mannings n .0350 Hydraulic Length 221.00 ft mm Avg.Velocity 9.17 ft/sec Segment #3 Time: .40 min ar gar am mm S/N: Bentley Systems, Inc. am Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 w ari Type. . . . Tc Calcs Page 2.04 Name. . . . BYPASS AREA - A am File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop ow Segment #4: Tc: TR-55 Shallow Hydraulic Length 305.00 ft air Slope .010000 ft/ft Unpaved Avg.Velocity 1.61 ft/sec arr Segment #4 Time: 3.15 min or Total Tc: 17.29 min ar arm aw rr um WO WO OW NO WO OM S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 arr IMP Type. . . . Tc Calcs Page 2.05 Name. . . . BYPASS AREA - A sus File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Tc Equations used. . . r.r SCS TR-55 Sheet Flow wo Tc = (.007 * ( (n * Lf) **0.8) ) / ( (P**.5) * (Sf**.4) ) Where: Tc = Time of concentration, hrs n = Mannings n ow Lf = Flow length, ft P = 2yr, 24hr Rain depth, inches Sf = Slope, rr SCS TR-55 Shallow Concentrated Flow Unpaved surface: ur V = 16.1345 * (Sf**0.5) Paved surface: V = 20.3282 * (Sf**0.5) ow Tc = (Lf / V) / (3600sec/hr) Where: V = Velocity, ft/sec Sf = Slope, ft/ft ® Tc = Time of concentration, hrs Lf = Flow length, ft WWI rrr xrr w S/N: Bentley Systems, Inc. ow Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 ow Type. . . . Tc Calcs Page 2.06 Name. . . . BYPASS AREA - A um File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop op SCS Channel Flow R = Aq / Wp es V = (1.49 * (R** (2/3) ) * (Sf**-0.5) ) / n Tc = (Lf / V) / (3600sec/hr) am Where: R = Hydraulic radius Aq = Flow area, sq.ft. Wp = Wetted perimeter, ft V = Velocity, ft/sec w o Sf = Slope, ft/ft n = Mannings n Tc = Time of concentration, hrs Lf = Flow length, ft N M AN NO N M NW +r NM NO ON NO S/N: Bentley Systems, Inc. w Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 rr mum Type. . . . Runoff CN-Area Page 3.01 Name. . . . AREA TO VAULT A wwr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop moo RUNOFF CURVE NUMBER DATA ow Impervious o Area Adjustment Adjusted Soil/Surface Description CN acres %C %UC CN Urban Districts - Commercial & Busi 92 9.400 92.00 err Urban Districts - Commercial & Busi 94 6.300 94.00 Urban Districts - Commercial & Busi 95 .400 95.00 ms COMPOSITE AREA & WEIGHTED CN ---> 16.100 92.86 (93) wwr w` OM wrr 00 MO OW WO r MO S/N: Bentley Systems, Inc. am Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 wry OP Type. . . . Runoff CN-Area Page 3.02 Name. . . . BYPASS AREA - A ma File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop or RUNOFF CURVE NUMBER DATA mio Impervious ma Area Adjustment Adjusted Soil/Surface Description CN acres %C %UC CN Impervious Areas - Paved parking lo 98 .250 98.00 Woods - good 55 9.410 55.00 COMPOSITE AREA & WEIGHTED CN ---> 9.660 56.11 (56) or ow wir or um S/N: Bentley Systems, Inc. NM Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 MP OP Type. . . . Node: Addition Summary Page 4.01 Name. . . . POI - A Event: 2 yr MK File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 2 ar SUMMARY FOR HYDROGRAPH ADDITION at Node: POI - A HYG Directory: H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\ Upstream Link ID Upstream Node ID HYG file HYG ID HYG tag r ADDLINK 20 BYPASS AREA - A BYPASS AREA - A 2 OUTFALL A VAULT A IN OUTFALL A 2 4111 INFLOWS TO: POI - A Volume Peak Time Peak Flow OW HYG file HYG ID HYG tag cu.ft min cfs BYPASS AREA - A 2 15899 730.00 2.99 OUTFALL A 2 167805 760.00 4.62 rot TOTAL FLOW INTO: POI - A Volume Peak Time Peak Flow .1111 HYG file HYG ID HYG tag cu.ft min cfs POI - A 2 183703 730.00 7.39 am .r AO .r Oa OS OM S/N: Bentley Systems, Inc. ow Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 .re am Type. . . . Node: Addition Summary Page 4.02 Name. . . . POI - A Event: 2 yr ma File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 2 ow TOTAL NODE INFLOW. . . HYG file = rim HYG ID = POI - A HYG Tag = 2 Peak Discharge = 7.39 cfs ow Time to Peak = 730.00 min HYG Volume = 183703 cu.ft nn HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min Time on left represents time for first value in each row. - 430.00 I .00 .01 .02 .03 .04 455.00 I .06 .07 .08 .09 .10 480.00 I .12 .13 .14 .15 .17 505.00 I .18 .20 .21 .23 .24 iiim 530.00 I .25 .26 .27 .28 .30 555.00 I .31 .32 .33 .34 .35 580.00 .36 .38 .39 .40 .41 605.00 .42 .43 .45 .46 .48 um 630.00 I .49 .49 .50 .51 .52 655.00 I .53 .54 .55 .56 .58 680.00 I .59 .60 .62 .65 .69 705.00 .76 .88 2.44 5.34 7.19 730.00 I 7.39 6.77 6.28 6.00 5.81 "` 755.00 I 5.65 5.52 5.43 5.36 5.31 780.00 5.26 5.21 5.16 5.12 5.08 805.00 5.04 5.00 4.96 4.91 4.87 830.00 I 4.83 4.78 4.74 4.69 4.64 ma 855.00 I 4.60 4.56 4.52 4.48 4.45 880.00 I 4.41 4.37 4.33 4.29 4.25 905.00 I 4.20 4.16 4.12 4.08 4.04 930.00 3.99 3.95 3.90 3.86 3.81 we 955.00 I 3.77 3.72 3.68 3.63 3.59 980.00 I 3.54 3.49 3.45 3.41 3.36 1005.00 3.32 3.28 3.24 3.20 3.15 1030.00 I 3.10 3.05 3.00 2.96 2.91 +1r 1055.00 2.86 2.82 2.77 2.73 2.69 1080.00 2.64 2.60 2.55 2.48 2.42 1105.00 I 2.37 2.31 2.25 2.20 2.15 1130.00 I 2.10 2.06 2.01 1.96 1.92 am 1155.00 I 1.88 1.84 1.80 1.76 1.73 1180.00 I 1.69 1.65 1.62 1.60 1.58 s. w ara S/N: Bentley Systems, Inc. all Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 .. A la Type. . . . Node: Addition Summary Page 4.03 Name. . . . POI - A Event: 2 yr am File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 2 r HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min Time on left represents time for first value in each row. we 1205.00 I 1.56 1.54 1.52 1.51 1.49 1230.00 I 1.48 1.46 1.45 1.43 1.42 1255.00 I 1.41 1.39 1.38 1.37 1.35 as 1280.00 1.34 1.33 1.32 1.31 1.29 1305.00 I 1.28 1.27 1.26 1.25 1.24 1330.00 1.23 1.22 1.21 1.20 1.19 1355.00 1.18 1.17 1.17 1.16 1.15 mi. 1380.00 I 1.14 1.13 1.12 1.11 1.11 1405.00 I 1.10 1.09 1.08 1.08 1.08 1430.00 I 1.07 1.07 1.07 1.06 1.02 1455.00 I .97 .94 .92 .91 .91 woo 1480.00 .91 .90 .90 .90 .89 1505.00 I .89 .89 .89 .89 .88 1530.00 I .88 .88 .88 .87 .87 1555.00 I .87 .87 .87 .86 .86 1580.00 .86 .86 .85 .85 .85 as 1605.00 I .85 .85 .84 .84 .84 1630.00 I .84 .83 .83 .83 .83 1655.00 I .83 .82 .82 .82 .82 1680.00 I .81 .81 .81 .81 .80 mm 1705.00 I .80 .80 .80 .80 .79 1730.00 .79 .79 .79 .78 .78 1755.00 I .78 .78 .77 .77 .77 1780.00 .77 .77 .76 .76 .76 or 1805.00 I .76 .75 .75 .75 .75 1830.00 I .75 .74 .74 .74 .74 1855.00 .73 .73 .73 .73 .73 1880.00 I .72 .72 .72 .72 .71 'ir 1905.00 .71 .71 .71 .71 .70 1930.00 I .70 .70 .70 .69 .69 1955.00 I .69 .69 .69 .68 .68 1980.00 I .68 .68 .67 .67 .67 a+ 2005.00 I .67 .66 .66 .66 .66 2030.00 .66 .65 .65 .65 .65 2055.00 .64 .64 .64 .64 .64 2080.00 I .63 .63 .63 .63 .62 - 2105.00 .62 .62 .62 .62 .61 2130.00 I .61 .61 .61 .60 .60 2155.00 .60 .60 .60 .59 .59 2180.00 I .59 .59 .58 .58 .58 01. 2205.00 I .58 .58 .57 .57 .57 2230.00 I .57 .56 .56 .56 .56 2255.00 .56 .55 .55 .55 .55 2280.00 I .54 .54 .54 .54 .53 wr 2305.00 I .53 .53 .53 .53 .52 ar INN S/N: Bentley Systems, Inc. me Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 ®a ma Type. . . . Node: Addition Summary Page 4.04 Name. . . . POI - A Event: 2 yr r File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 2 or HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. moo 2330.00 I .52 .52 .52 .51 .51 2355.00 .51 .51 .51 .50 .50 2380.00 I .50 .50 .49 .49 .49 as 2405.00 I .49 .49 .48 .48 .47 2430.00 I .47 .46 .46 .45 .45 2455.00 I .45 .44 .44 .43 .43 2480.00 I .42 .42 .41 .41 .41 ® 2505.00 .40 .40 .39 .39 .39 2530.00 I .38 .38 .37 .37 .36 2555.00 .36 .35 .35 .34 .34 2580.00 .33 .33 .32 .32 .31 +r. 2605.00 I .31 .31 .30 .30 .29 2630.00 I .29 .29 .28 .28 .27 2655.00 I .27 .27 .26 .26 .26 2680.00 .25 .25 .25 .24 .24 2705.00 I .23 .23 .22 .22 .21 rm 2730.00 I .21 .20 .20 .19 .19 2755.00 I .18 .18 .17 .17 .17 2780.00 I .16 .16 .15 .15 .15 2805.00 I .14 .14 .14 .13 .13 rim 2830.00 .13 .12 .12 .12 .12 2855.00 I .11 .11 .11 .11 .10 2880.00 I .10 .10 .10 .09 .09 2905.00 I .09 .09 .09 .08 .08 me 2930.00 I .08 .08 .08 .07 .07 2955.00 I .07 .07 .07 .07 .06 2980.00 I .06 .06 .06 .06 .06 3005.00 .06 .05 .05 .05 .05 - 3030.00 .05 .05 .05 .05 .04 3055.00 I .04 .04 .04 .04 .04 3080.00 .04 .04 .04 .04 .04 3105.00 I .03 .03 .03 .03 .03 mr 3130.00 I .03 .03 .03 .03 .03 3155.00 .03 .03 .03 .03 .02 3180.00 I .02 .02 .02 .02 .02 3205.00 I .02 .02 .02 .02 .02 mm 3230.00 .02 .02 .02 .02 .02 3255.00 I .02 .02 .02 .02 .02 3280.00 I .01 .01 .01 .01 .01 3305.00 I .01 .C1 .01 .01 .01 m. 3330.00 .01 .01 .01 .01 .01 3355.00 I .01 .01 .01 .01 .01 3380.00 I .01 .01 .01 .01 .01 3405.00 I .01 .01 .01 .01 .01 MI 3430.00 .01 .01 .01 .01 .01 MI MN S/N: Bentley Systems, Inc. +r Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 m. mm Type. . . . Node: Addition Summary Page 4.05 Name. . . . POI - A Event: 2 yr mm File. . . . H:\l2\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 2 rn HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. are 3455.00 I .01 .01 .01 .01 .01 3480.00 .01 .01 .01 .01 .01 3505.00 I .01 .01 .00 .00 .00 ++� 3530.00 .00 .00 .00 .00 .00 3555.00 .00 .00 .00 .00 .00 3580.00 I .00 .00 .00 .00 .00 3605.00 .00 .00 .00 .00 mm rr am rr ma ma ma rr r es MIK S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 rw am Type. . . . Node: Addition Summary Page 4.06 Name. . . . POI - A Event: 10 yr re File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 10 ,re SUMMARY FOR HYDROGRAPH ADDITION at Node: POI - A +O HYG Directory: H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\ Upstream Link ID Upstream Node ID HYG file HYG ID HYG tag 0. ADDLINK 20 BYPASS AREA - A BYPASS AREA - A 10 OUTFALL A VAULT A IN OUTFALL A 10 mift INFLOWS TO: POI - A Volume Peak Time Peak Flow o.r HYG file HYG ID HYG tag cu.ft min cfs BYPASS AREA - A 10 47843 725.00 13.41 OUTFALL A 10 276348 735.00 14.41 rr TOTAL FLOW INTO: POI - A Volume Peak Time Peak Flow OW HYG file HYG ID HYG tag cu.ft min cfs POI - A 10 324191 725.00 27.34 ms MO MO WO MO OM OW S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 -U r. Type. . . . Node: Addition Summary Page 4.07 Name. . . . POI - A Event: 10 yr .r File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 10 ma TOTAL NODE INFLOW. . . HYG file = °r HYG ID = POI - A HYG Tag = 10 Peak Discharge = 27.34 cfs or Time to Peak = 725.00 min HYG Volume = 324191 cu.ft Willi HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min I Time on left represents time for first value in each row. ,r, 315.00 .00 .00 .02 .03 .05 340.00 I .06 .08 .09 .11 .12 365.00 .14 .15 .17 .19 .20 390.00 I .22 .24 .25 .26 .27 or 415.00 I .28 .29 .30 .31 .32 440.00 .33 .34 .35 .36 .37 465.00 I .38 .39 .40 .41 .42 490.00 I .43 .44 .45 .46 .47 or 515.00 .49 .49 .50 .50 .51 540.00 I .51 .52 .53 .53 .54 565.00 I .55 .56 .56 .57 .58 590.00 .58 .59 .60 .61 .61 615.00 I .62 .63 .64 .65 .66 om 640.00 I .68 .69 .70 .71 .73 665.00 .74 .76 .78 .79 .81 690.00 I .84 .88 1.09 2.98 5.77 715.00 I 11.26 22.64 27.34 25.91 22.55 "' 740.00 20.11 18.69 17.69 16.88 16.21 765.00 15.64 15.17 14.76 14.35 13.95 790.00 I 13.57 13.17 12.79 12.42 12.02 815.00 11.63 11.25 10.80 10.37 9.96 ma 840.00 I 9.50 8.99 8.52 8.09 7.71 865.00 I 7.42 7.15 6.90 6.66 6.44 890.00 6.23 6.06 5.96 5.86 5.76 915.00 5.66 5.57 5.50 5.45 5.40 or 940.00 I 5.35 5.31 5.26 5.21 5.16 965.00 I 5.11 5.07 5.02 4.98 4.94 990.00 I 4.90 4.86 4.82 4.78 4.74 1015.00 4.70 4.66 4.61 4.57 4.53 or 1040.00 I 4.49 4.45 4.41 4.37 4.33 1065.00 I 4.29 4.25 4.20 4.16 4.12 aim air am S/N: Bentley Systems, Inc. "" Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 om wir Type. . . . Node: Addition Summary Page 4.08 Name. . . . POI - A Event: 10 yr rr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 10 mo HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. - 1090.00 I 4.07 4.03 3.99 3.95 3.91 1115.00 I 3.87 3.82 3.77 3.73 3.68 1140.00 3.64 3.60 3.55 3.51 3.47 me 1165.00 I 3.43 3.38 3.33 3.28 3.23 1190.00 I 3.18 3.13 3.08 3.03 2.98 1215.00 I 2.94 2.90 2.86 2.82 2.78 1240.00 2.74 2.68 2.63 2.57 2.52 um 1265.00 2.47 2.43 2.38 2.34 2.30 1290.00 I 2.26 2.22 2.19 2.15 2.12 1315.00 2.09 2.05 2.02 2.00 1.97 1340.00 1.94 1.92 1.89 1.87 1.85 isio 1365.00 I 1.83 1.80 1.78 1.77 1.76 1390.00 I 1.75 1.74 1.73 1.72 1.71 1415.00 I 1.70 1.69 1.68 1.67 1.66 1440.00 1.65 1.60 1.48 1.35 1.26 rr. 1465.00 I 1.20 1.15 1.12 1.09 1.06 1490.00 I 1.03 1.00 .98 .95 .93 1515.00 I .92 .92 .92 .91 .91 1540.00 .91 .91 .91 .90 .90 1565.00 .90 .90 .89 .89 .89 NO 1590.00 I .89 .89 .88 .88 .88 1615.00 I .88 .87 .87 .87 .87 1640.00 .87 .86 .86 .86 .86 1665.00 I .85 .85 .85 .85 .84 mill 1690.00 I .84 .84 .84 .84 .83 1715.00 I .83 .83 .83 .82 .82 1740.00 .82 .82 .82 .81 .81 1765.00 I .81 .81 .80 .80 .80 O11 1790.00 I .80 .79 .79 .79 .79 1815.00 I .79 .78 .78 .78 .78 1840.00 I .77 .77 .77 .77 .77 1865.00 I .76 .76 .76 .76 .75 r"' 1890.00 I .75 .75 .75 .75 .74 1915.00 I .74 .74 .74 .73 .73 1940.00 F .73 .73 .73 .72 .72 1965.00 I .72 .72 .71 .71 .71 rr 1990.00 I .71 .71 .70 .70 .70 2015.00 I .70 .69 .69 .69 .69 2040.00 I .68 .68 .68 .68 .68 2065.00 I .67 .67 .67 .67 .66 OM 2090.00 F .66 .66 .66 .66 .65 2115.00 I .65 .65 .65 .64 .64 2140.00 I .64 .64 .64 .63 .63 2165.00 I .63 .63 .62 .62 .62 will 2190.00 I .62 .61 .61 .61 .61 air ms S/N: Bentley Systems, Inc. ft. Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 rrr am Type. . . . Node: Addition Summary Page 4.09 Name. . . . POI - A Event: 10 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop rr Storm. . . Typell 24hr Tag: 10 rr HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min I Time on left represents time for first value in each row. ow 2215.00 I .61 .60 .60 .60 .60 2240.00 .59 .59 .59 .59 .59 2265.00 I .58 .58 .58 .58 .58 rr 2290.00 I .57 .57 .57 .57 .56 2315.00 .56 .56 .56 .56 .55 2340.00 I .55 .55 .55 .54 .54 2365.00 I .54 .54 .53 .53 .53 um 2390.00 I .53 .53 .52 .52 .52 2415.00 .52 .51 .51 .51 .51 2440.00 .51 .50 .50 .50 .50 2465.00 I .49 .49 .49 .49 .49 r 2490.00 .48 .48 .47 .47 .46 2515.00 I .46 .45 .45 .45 .44 2540.00 .44 .43 .43 .42 .42 2565.00 I .41 .41 .41 .40 .40 ma 2590.00 I .39 .39 .39 .38 .38 2615.00 .37 .37 .36 .36 .35 2640.00 I .35 .34 .34 .33 .33 2665.00 I .32 .32 .31 .31 .31 2690.00 .30 .30 .29 .29 .29 r` 2715.00 I .28 .28 .27 .27 .27 2740.00 .26 .26 .26 .25 .25 2765.00 I .24 .24 .24 .23 .23 2790.00 .22 .21 .21 .20 .20 am 2815.00 .20 .19 .19 .18 .18 2840.00 I .17 .17 .17 .16 .16 2865.00 .15 .15 .15 .14 .14 2890.00 I .14 .13 .13 .13 .12 r. 2915.00 .12 .12 .12 .11 .11 2940.00 I .11 .11 .10 .10 .10 2965.00 I .10 .09 .09 .09 .09 2990.00 I .08 .08 .08 .08 .08 +U 3015.00 I .08 .07 .07 .07 .07 3040.00 .07 .07 .06 .06 .06 3065.00 I .06 .06 .06 .06 .05 3090.00 I .05 .05 .05 .05 .05 rr. 3115.00 .05 .05 .04 .04 .04 3140.00 .04 .04 .04 .04 .04 3165.00 .04 .04 .04 .03 .03 3190.00 I .03 .03 .03 .03 .03 ,IMW 3215.00 I .03 .03 .03 .03 .03 3240.00 .03 .03 .02 .02 .02 3265.00 I .02 .02 .02 .02 .02 3290.00 I .02 .02 .02 .02 .02 rip 3315.00 I .02 .02 .02 .02 .02 um +rr S/N: Bentley Systems, Inc. +m Bentley PondPacY (10.00.027.00) 12:41 AM 10/23/2014 r! ow Type. . . . Node: Addition Summary Page 4.10 Name. . . . POI - A Event: 10 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop WO Storm. . . Typell 24hr Tag: 10 +w HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min I Time on left represents time for first value in each row. ow 3340.00 I .02 .02 .02 .01 .01 3365.00 .01 .01 .01 .01 .01 3390.00 I .01 .01 .01 .01 .01 ■r. 3415.00 .01 .01 .01 .01 .01 3440.00 .01 .01 .01 .01 .01 3465.00 I .01 .01 .01 .01 .01 3490.00 I .01 .01 .01 .01 .01 w. 3515.00 I .01 .01 .01 .01 .01 3540.00 .01 .01 .01 .01 .01 3565.00 .01 .01 .01 .01 .00 3590.00 I .00 .00 .00 .00 .00 ow 3615.00 I .00 .00 .00 .00 .00 3640.00 I .00 .00 .00 .00 .00 3665.00 .00 .00 .00 .00 .00 3690.00 .00 .00 ow ow ow ow ow ow ow ow ow ow S/N: Bentley Systems, Inc. o" Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 ow ma Type. . . . Vol: Elev-Volume Page 5.01 Name. . . . VAULT A um File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop um USER DEFINED VOLUME RATING TABLE Elevation Volume (ft) (cu.ft) 397.60 0 398.10 3033 - 398.60 6066 399.10 9099 399.60 12132 400.10 18024 +rr 400.60 23915 401.10 29807 401.60 35698 402.10 41590 rr 402.60 47481 403.10 53373 403.60 59264 404.10 65156 404.60 71047 405.10 76939 405.60 82830 406.10 88722 406.60 94613 um 407.10 100505 407.60 106397 408.10 112288 408.60 118180 r» 409.10 124071 409.60 129963 410.10 135854 410.60 141746 ON 411.10 147637 411.60 153529 412.10 156562 412.60 159595 am 413.10 162628 413.60 165661 um ON INN OW ON S/N: Bentley Systems, Inc. "•" Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 ler .r Type. . . . Outlet Input Data Page 6.01 Name. . . . Outlet 2 r File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop or REQUESTED POND WS ELEVATIONS: Min. Elev.= 397.60 ft Increment = .50 ft Max. Elev.= 413.60 ft or **********************k*********************** OUTLET CONNECTIVITY ********************************************** um ---> Forward Flow Only (UpStream to DnStream) <--- Reverse Flow Only (DnStream to Upstream) <---> Forward and Reverse Both Allowed ow Structure No. Outfall El, ft E2, ft Orifice-Circular UD ---> CO 398.100 413.600 MN Culvert-Circular Cl ---> CO 403.100 413.600 Culvert-Circular C2 ---> CO 407.250 413.600 Culvert-Circular CO ---> TW 388.500 413.600 TW SETUP, DS Channel rw ow mom um ow me MO S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 ow Type. . . . Outlet Input Data Page 6.02 Name. . . . Outlet 2 ow File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop ow OUTLET STRUCTURE INPUT DATA ow Structure ID = UD Structure Type = Orifice-Circular ow # of Openings = 1 Invert Elev. = 398.10 ft Diameter = 4.00 in rr Orifice Coeff. _ .600 rr rr wr +rr air WNW �r. rrr S/N: Bentley Systems, Inc. ow Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 r mo Type. . . . Outlet Input Data Page 6.03 Name. . . . Outlet 2 MN File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop mm OUTLET STRUCTURE INPUT DATA mm Structure ID = Cl Structure Type = Culvert-Circular w No. Barrels = 1 Barrel Diameter = 8.00 in Upstream Invert = 403.10 ft Dnstream Invert = 399.45 ft mm Horiz. Length = 21.50 ft Barrel Length = 21.81 ft Barrel Slope = .16977 ft/ft _ OUTLET CONTROL DATA. . . Mannings n = .0130 Ke = .5000 (forward entrance loss) Kb = .053699 (per ft of full flow) mom Kr = .5000 (reverse entrance loss) HW Convergence = .001 +/- ft INLET CONTROL DATA. . . Equation form = 1 mm Inlet Control K = .0078 Inlet Control M = 2.0000 Inlet Control c = .03790 Inlet Control Y = .6900 r. Ti ratio (HW/D) = 1.050 T2 ratio (HW/D) = 1.212 Slope Factor = -.500 11° Use unsubmerged inlet control Form 1 equ. below Ti elev. Use submerged inlet control Form 1 equ. above T2 elev. In transition zone between unsubmerged and submerged inlet control, mm interpolate between flows at Tl & T2. . . At Tl Kiev = 403.80 ft ---> Flow = 1.00 cfs At T2 Elev = 403.91 ft ---> Flow = 1.14 cfs mm WO MO, WO S/N: Bentley Systems, Inc. mm Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 mm NM Type. . . . Outlet Input Data Page 6.04 Name. . . . Outlet 2 Mar File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop antra OUTLET STRUCTURE INPUT DATA rMa Structure ID = C2 Structure Type = Culvert-Circular awa No. Barrels = 1 Barrel Diameter = 12.00 in Upstream Invert = 407.25 ft Dnstream Invert = 406.45 ft ow Horiz. Length = 21.50 ft Barrel Length = 21.51 ft Barrel Slope = .03721 ft/ft OUTLET CONTROL DATA. . . Mannings n = .0130 Ke = .5000 (forward entrance loss) Kb = .031274 (per ft of full flow) w Kr = .5000 (reverse entrance loss) HW Convergence = .001 +/- ft INLET CONTROL DATA. . . Equation form = 1 Mw Inlet Control K = .0078 Inlet Control M = 2.0000 Inlet Control c = .03790 Inlet Control Y = .6900 Tl ratio (HW/D) = 1.117 T2 ratio (HW/D) = 1.278 Slope Factor = -.500 Use unsubmerged inlet control Form 1 equ. below Tl elev. Use submerged inlet control Form 1 equ. above T2 elev. In transition zone between unsubmerged and submerged inlet control, Mw interpolate between flows at Tl & T2. . . At Tl Elev = 408.37 ft ---> Flow = 2.75 cfs At T2 Elev = 408.53 ft ---> Flow = 3.14 cfs aw aw .MY Mar MOM S/N: Bentley Systems, Inc. w Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 Type. . . . Outlet Input Data Page 6.05 Name. . . . Outlet 2 File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop ow OUTLET STRUCTURE INPUT DATA rr Structure ID = CO Structure Type = Culvert-Circular e No. Barrels = 1 Barrel Diameter = 24.00 in Upstream Invert = 388.50 ft Dnstream Invert = 368.50 ft low Horiz. Length = 220.00 ft Barrel Length = 220.91 ft Barrel Slope = .09091 ft/ft moo OUTLET CONTROL DATA. . . Mannings n = .0130 Ke = .5000 (forward entrance loss) Kb = .012411 (per ft of full flow) rw Kr = .5000 (reverse entrance loss) HW Convergence = .001 +/- ft INLET CONTROL DATA. . . Equation form = 1 oft Inlet Control K = .0098 Inlet Control M = 2.0000 Inlet Control c = .03980 Inlet Control Y = .6700 Tl ratio (HW/D) = 1.115 T2 ratio (HW/D) = 1.261 Slope Factor = -.500 Use unsubmerged inlet control Form 1 equ. below Tl elev. Use submerged inlet control Form 1 equ. above T2 elev. In transition zone between unsubmerged and submerged inlet control, +r+ interpolate between flows at Tl & T2. . . At Tl Elev = 390.73 ft ---> Flow = 15.55 cfs At T2 Elev = 391.02 ft ---> Flow = 17.77 cfs oo Structure ID = TW Structure Type = TW SETUP, DS Channel r FREE OUTFALL CONDITIONS SPECIFIED CONVERGENCE TOLERANCES. . . MP Maximum Iterations= 40 Min. TW tolerance = .01 ft Max. TW tolerance = .01 ft Min. HW tolerance = .01 ft Max. HW tolerance = .01 ft +rr Min. Q tolerance = .00 cfs Max. Q tolerance = .00 cfs .rr S/N: Bentley Systems, Inc. ow Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 r wok Type. . . . Composite Rating Curve Page 6.06 Name. . . . Outlet 2 ow File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop rria ***** COMPOSITE OUTFLOW SUMMARY **** 'w WS Elev, Total Q Notes Converge Elev. Q TW Elev Error ft cfs ft +/-ft Contributing Structures ■a 397.60 .00 Free Outfall (no Q: UD,C1,C2,C0) 398.10 .00 Free Outfall (no Q: UD,C1,C2,C0) 398.60 .24 Free Outfall UD,C0 (no Q: Cl,C2) ow 399.10 .38 Free Outfall UD,C0 (no Q: Cl,C2) 399.60 .48 Free Outfall UD,C0 (no Q: Cl,C2) 400.10 .57 Free Outfall UD,C0 (no Q: Cl,C2) 400.60 .64 Free Outfall UD,C0 (no Q: Cl,C2) ow 401.10 .71 Free Outfall UD,C0 (no Q: Cl,C2) 401.60 .77 Free Outfall UD,C0 (no Q: C1,C2) 402.10 .82 Free Outfall UD,C0 (no Q: Cl,C2) 402.60 .87 Free Outfall UD,C0 (no Q: Cl,C2) ow 403.10 .92 Free Outfall UD,C0 (no Q: Cl,C2) 403.60 1.43 Free Outfall UD,C1,C0 (no Q: C2) 404.10 2.37 Free Outfall UD,C1,C0 (no Q: C2) 404.60 2.93 Free Outfall UD,C1,C0 (no Q: C2) wr 405.10 3.36 Free Outfall UD,C1,C0 (no Q: C2) 405.60 3.73 Free Outfall UD,C1,C0 (no Q: C2) 406.10 4.06 Free Outfall UD,C1,C0 (no Q: C2) 406.60 4.37 Free Outfall UD,C1,C0 (no Q: C2) 407.10 4.64 Free Outfall UD,C1,C0 (no Q: C2) 0111 407.25 4.73 Free Outfall UD,C1,C0 (no Q: C2) 407.60 5.23 Free Outfall UD,C1,C2,C0 408.10 6.73 Free Outfall UD,C1,C2,C0 408.60 8.64 Free Outfall UD,C1,C2,C0 - 409.10 10.00 Free Outfall UD,C1,C2,C0 409.60 11.06 Free Outfall UD,C1,C2,C0 410.10 12.00 Free Outfall UD,C1,C2,C0 410.60 12.85 Free Outfall UD,C1,C2,C0 "" 411.10 13.65 Free Outfall UD,C1,C2,C0 411.60 14.36 Free Outfall UD,r_1,C2,C0 412.10 15.06 Free Outfall UD,C1,C2,C0 412.60 15.72 Free Outfall UD,C1,C2,C0 413.10 16.35 Free Outfall UD,C1,C2,C0 413.60 16.96 Free Outfall UD,C1,C2,C0 WO WO WO rrr S/N: Bentley Systems, Inc. ""' Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 mo Type. . . . Pond Routing Summary Page 7.01 Name. . . . VAULT A OUT Tag: 2 Event: 2 yr w File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 2 os LEVEL POOL ROUTING SUMMARY HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\ as Inflow HYG file = NONE STORED - VAULT A IN 2 Outflow HYG file = NONE STORED - VAULT A OUT 2 Pond Node Data = VAULT A sot Pond Volume Data = VAULT A Pond Outlet Data = Outlet 2 No Infiltration oo INITIAL CONDITIONS Starting WS Elev = 397.60 ft y,. Starting Volume = 0 cu.ft Starting Outflow = .00 cfs Starting Infiltr. = .00 cfs Starting Total Qout= .00 cfs low Time Increment = 5.00 min INFLOW/OUTFLOW HYDROGRAPH SUMMARY ow Peak Inflow = 70.57 cfs at 715.00 min Peak Outflow = 4.62 cfs at 760.00 min Peak Elevation = 407.05 ft " Peak Storage = 99895 cu.ft MASS BALANCE (cu.ft) + Initial Vol = 0 + HYG Vol IN = 170875 - Infiltration = 0 - HYG Vol OUT = 167805 - Retained Vol = 3070 so Unrouted Vol = - cu.ft (.000% of Inflow Volume) or so WA An S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 op Type. . . . Pond Routed HYG (total out) Page 7.02 Name. . . . VAULT A OUT Tag: 2 Event: 2 yr mm File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 2 wr POND ROUTED TOTAL OUTFLOW HYG. . . HYG file = - HYG ID = VAULT A OUT HYG Tag = 2 Peak Discharge = 4.62 cfs UK Time to Peak = 760.00 min HYG Volume = 167805 cu.ft wr HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. or 210.00 .00 .00 .00 .00 .00 235.00 I .00 .00 .00 .00 .00 260.00 I .00 .00 .00 .00 .00 285.00 I .00 .00 .00 .00 .00 ,y 310.00 I .00 .00 .00 .00 .00 335.00 I .00 .00 .00 .00 .00 360.00 I .00 .00 .00 .00 .00 385.00 I .00 .00 .00 .00 .00 .rr 410.00 I .00 .00 .00 .00 .00 435.00 I .01 .02 .03 .04 .06 460.00 I .07 .08 .09 .10 .12 485.00 I .13 .14 .15 .17 .18 510.00 .20 .21 .23 .24 .25 mw 535.00 I .26 .27 .28 .30 .31 560.00 I .32 .33 .34 .35 .36 585.00 I .38 .39 .40 .41 .42 610.00 I .43 .45 .46 .48 .49 °"m 635.00 I .49 .50 .51 .52 .53 660.00 I .54 .55 .56 .58 .59 685.00 .60 .62 .65 .69 .76 710.00 .86 2.02 3.63 4.22 4.40 "" 735.00 I 4.48 4.53 4.58 4.60 4.61 760.00 I 4.62 4.61 4.61 4.60 4.59 785.00 I 4.58 4.56 4.54 4.52 4.50 810.00 I 4.48 4.45 4.43 4.40 4.37 rr 835.00 I 4.34 4.31 4.28 4.24 4.21 860.00 I 4.18 4.14 4.11 4.08 4.04 885.00 I 4.01 3.97 3.94 3.90 3.86 910.00 I 3.83 3.79 3.76 3.72 3.68 ow 935.00 I 3.64 3.60 3.56 3.52 3.48 960.00 3.44 3.40 3.36 3.32 3.27 AM w MIVI S/N: Bentley Systems, Inc. mo Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 r ma Type. . . . Pond Routed HYG (total out) Page 7.03 Name. . . . VAULT A OUT Tag: 2 Event: 2 yr w, File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 2 ma HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. om 985.00 I 3.23 3.19 3.15 3.11 3.07 1010.00 I 3.03 2.99 2.95 2.90 2.86 1035.00 2.81 2.76 2.71 2.67 2.62 - 1060.00 2.58 2.54 2.50 2.46 2.42 1085.00 I 2.38 2.32 2.26 2.20 2.15 1110.00 I 2.09 2.04 1.99 1.94 1.90 1135.00 I 1.85 1.81 1.76 1.72 1.68 1160.00 I 1.65 1.61 1.57 1.54 1.51 1185.00 I 1.47 1.44 1.42 1.40 1.39 1210.00 I 1.37 1.35 1.34 1.32 1.31 1235.00 I 1.29 1.28 1.27 1.25 1.24 - 1260.00 1.23 1.21 1.20 1.19 1.18 1285.00 I 1.17 1.15 1.14 1.13 1.12 1310.00 I 1.11 1.10 1.09 1.08 1.07 1335.00 1.06 1.05 1.04 1.03 1.02 ommi 1360.00 1.02 1.01 1.00 .99 .98 1385.00 I .97 .97 .96 .95 .94 1410.00 I .94 .93 .92 .92 .92 1435.00 I .92 .92 .92 .92 .92 w.. 1460.00 .91 .91 .91 .91 .90 1485.00 .90 .90 .90 .89 .89 1510.00 .89 .89 .89 .88 .88 1535.00 I .88 .88 .87 .87 .87 1560.00 I .87 .87 .86 .86 .86 .r 1585.00 .86 .85 .85 .85 .85 1610.00 .85 .84 .84 .84 .84 1635.00 I .83 .83 .83 .83 .83 1660.00 I .82 .82 .82 .82 .81 ` 1685.00 I .81 .81 .81 .80 .80 1710.00 .80 .80 .80 .79 .79 1735.00 .79 .79 .78 .78 .78 1760.00 I .78 .77 .77 .77 .77 am 1785.00 .77 .76 .76 .76 .76 1810.00 .75 .75 .75 .75 .75 1835.00 .74 .74 .74 .74 .73 1860.00 I .73 .73 .73 .73 .72 or 1885.00 I .72 .72 .72 .71 .71 1910.00 .71 .71 .71 .70 .70 1935.00 .70 .70 .69 .69 .69 1960.00 I .69 .69 .68 .68 .68 .r. 1985.00 I .68 .67 .67 .67 .67 2010.00 .66 .66 .66 .66 .66 2035.00 I .65 .65 .65 .65 .64 2060.00 I .64 .64 .64 .64 .63 .r 2085.00 .63 .63 .63 .62 .62 +r► w S/N: Bentley Systems, Inc. "" Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 moo mo Type. . . . Pond Routed HYG (total out) Page 7.04 Name. . . . VAULT A OUT Tag: 2 Event: 2 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop r Storm. . . Typell 24hr Tag: 2 irr HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min Time on left represents time for first value in each row. .r 2110.00 I .62 .62 .62 .61 .61 2135.00 I .61 .61 .60 .60 .60 2160.00 I .60 .60 .59 .59 .59 +r 2185.00 I .59 .58 .58 .58 .58 2210.00 .58 .57 .57 .57 .57 2235.00 I .56 .56 .56 .56 .56 2260.00 I .55 .55 .55 .55 .54 m 2285.00 .54 .54 .54 .53 .53 2310.00 I .53 .53 .53 .52 .52 2335.00 I .52 .52 .51 .51 .51 2360.00 I .51 .51 .50 .50 .50 r 2385.00 I .50 .49 .49 .49 .49 2410.00 I .49 .48 .48 .47 .47 2435.00 .46 .46 .45 .45 .45 2460.00 .44 .44 .43 .43 .42 .r 2485.00 I .42 .41 .41 .41 .40 2510.00 .40 .39 .39 .39 .38 2535.00 I .38 .37 .37 .36 .36 2560.00 I .35 .35 .34 .34 .33 2585.00 I .33 .32 .32 .31 .31 "" 2610.00 I .31 .30 .30 .29 .29 2635.00 I .29 .28 .28 .27 .27 2660.00 I .27 .26 .26 .26 .25 2685.00 .25 .25 .24 .24 .23 "' 2710.00 I .23 .22 .22 .21 .21 2735.00 I .20 .20 .19 .19 .18 2760.00 I .18 .17 .17 .17 .16 2785.00 I .16 .15 .15 .15 .14 MO 2810.00 I .14 .14 .13 .13 .13 2835.00 .12 .12 .12 .12 .11 2860.00 I .11 .11 .11 .10 .10 2885.00 I .10 .10 .09 .09 .09 ow 2910.00 .09 .09 .08 .08 .08 2935.00 I .08 .08 .07 .07 .07 2960.00 .07 .07 .07 .06 .06 2985.00 I .06 .06 .06 .06 .06 .■, 3010.00 .05 .05 .05 .05 .05 3035.00 I .05 .05 .05 .04 .04 3060.00 I .04 .04 .04 .04 .04 3085.00 I .04 .04 .04 .04 .03 lam 3110.00 I .03 .03 .03 .03 .03 3135.00 I .03 .03 .03 .03 .03 3160.00 I .03 .03 .03 .02 .02 3185.00 I .02 .02 .02 .02 .02 mm 3210.00 I .02 .02 .02 .02 .02 oft we S/N: Bentley Systems, Inc. mo Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 moo tor Type. . . . Pond Routed HYG (total out) Page 7.05 Name. . . . VAULT A OUT Tag: 2 Event: 2 yr File. . . . H:\l2\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop oo Storm. . . Typell 24hr Tag: 2 mot HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min I Time on left represents time for first value in each row. oo 3235.00 I .02 .02 .02 .02 .02 3260.00 I .02 .02 .02 .02 .01 3285.00 I .01 .01 .01 .01 .01 .r.. 3310.00 I .01 .01 .01 .01 .01 3335.00 I .01 .01 .01 .01 .01 3360.00 i .01 .01 .01 .01 .01 3385.00 I .01 .01 .01 .01 .01 _r 3410.00 .01 .01 .01 .01 .01 3435.00 I .01 .01 .01 .01 .01 3460.00 .01 .01 .01 .01 .01 3485.00 I .01 .01 .01 .01 .01 ..r 3510.00 I .01 .00 .00 .00 .00 3535.00 I .00 .00 .00 .00 .00 3560.00 I .00 .00 .00 .00 .00 3585.00 .00 .00 .00 .00 .00 oo 3610.00 I .00 .00 .00 wo err oo OW .r. .w NW ift UM S/N: Bentley Systems, Inc. .r. Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 s re Type. . . . Pond Routing Summary Page 7.06 Name. . . . VAULT A OUT Tag: 10 Event: 10 yr r File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 10 UM LEVEL POOL ROUTING SUMMARY HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\ r' Inflow HYG file = NONE STORED - VAULT A IN 10 Outflow HYG file = NONE STORED - VAULT A OUT 10 Pond Node Data = VAULT A Pond Volume Data = VAULT A Pond Outlet Data = Outlet 2 No Infiltration INITIAL CONDITIONS Starting WS Elev = 397.60 ft re Starting Volume = 0 cu.ft Starting Outflow = .00 cfs Starting Infiltr. = .00 cfs Starting Total Qout= .00 cfs on Time Increment = 5.00 min INFLOW/OUTFLOW HYDROGRAPH SUMMARY arr Peak Inflow = 112.13 cfs at 715.00 min Peak Outflow = 14.41 cfs at 735.00 min Peak Elevation = 411.63 ft Peak Storage = 153739 cu.ft r MASS BALANCE (cu.ft) + Initial Vol = 0 + HYG Vol IN = 279418 - Infiltration = 0 - HYG Vol OUT = 276348 - Retained Vol = 3070 rim Unrouted Vol = 0 cu.ft (.000% of Inflow Volume) MO AM MK au S/N: Bentley Systems, Inc. on Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 r mm Type. . . . Pond Routed HYG (total out) Page 7.07 Name. . . . VAULT A OUT Tag: 10 Event: 10 yr ma File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . TypeIl 24hr Tag: 10 Ai POND ROUTED TOTAL OUTFLOW HYG. . . HYG file = "A HYG ID = VAULT A OUT HYG Tag = 10 Peak Discharge = 14.41 cfs mw Time to Peak = 735.00 min HYG Volume = 276348 cu.ft mm HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. i, 145.00 I .00 .00 .00 .00 .00 170.00 I .00 .00 .00 .00 .00 195.00 .00 .00 .00 .00 .00 220.00 .00 .00 .00 .00 .00 Am 245.00 I .00 .00 .00 .00 .00 270.00 I .00 .00 .00 .00 .00 295.00 .00 .00 .00 .00 .00 320.00 I .00 .02 .03 .05 .06 rr 345.00 I .08 .09 .11 .12 .14 370.00 I .15 .17 .19 .20 .22 395.00 I .24 .25 .26 .27 .28 420.00 I .29 .30 .31 .32 .33 445.00 .34 .35 .36 .37 .38 "~ 470.00 .39 .40 .41 .42 .43 495.00 I .44 .45 .46 .47 .49 520.00 .49 .50 .50 .51 .51 545.00 I .52 .53 .53 .54 .55 "` 570.00 I .56 .56 .57 .58 .58 595.00 I .59 .60 .61 .61 .62 620.00 .63 .64 .65 .66 .68 645.00 I .69 .70 .71 .73 .74 "- 670.00 .76 .78 .79 .81 .84 695.00 I .87 .94 2.32 3.67 5.65 720.00 I 11.95 13.93 14.35 14.41 14.35 745.00 14.25 14.10 13.90 13.67 13.41 +m 770.00 I 13.14 12.87 12.58 12.28 11.98 795.00 I 11.66 11.34 11.02 10.68 10.34 820.00 I 10.01 9.61 9.22 8.84 8.42 845.00 I 7.95 7.52 7.12 6.75 6.48 +.s 870.00 I 6.22 5.99 5.76 5.55 5.35 895.00 5.20 5.11 5.02 4.94 4.86 Am Am Am S/N: Bentley Systems, Inc. - Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 rr or Type. . . . Pond Routed HYG (total out) Page 7.08 Name. . . . VAULT A OUT Tag: 10 Event: 10 yr or File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 10 or HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min I Time on left represents time for first value in each row. or 920.00 4.77 4.72 4.68 4.65 4.62 945.00 I 4.58 4.55 4.52 4.48 4.45 970.00 4.41 4.38 4.34 4.31 4.27 or 995.00 4.24 4.20 4.17 4.13 4.10 1020.00 I 4.06 4.03 3.99 3.95 3.92 1045.00 3.88 3.85 3.81 3.78 3.74 1070.00 3.70 3.66 3.63 3.59 3.55 MN 1095.00 I 3.51 3.48 3.44 3.40 3.37 1120.00 I 3.33 3.29 3.25 3.21 3.17 1145.00 3.13 3.10 3.06 3.02 2.98 1170.00 I 2.95 2.91 2.86 2.81 2.77 OR 1195.00 2.72 2.68 2.64 2.59 2.55 1220.00 2.51 2.47 2.44 2.40 2.36 1245.00 I 2.30 2.25 2.20 2.15 2.10 1270.00 I 2.05 2.01 1.97 1.93 1.89 or 1295.00 1.85 1.82 1.78 1.75 1.72 1320.00 I 1.69 1.66 1.63 1.61 1.58 1345.00 I 1.56 1.53 1.51 1.49 1.47 1370.00 1.45 1.43 1.42 1.41 1.40 r 1395.00 I 1.39 1.38 1.37 1.36 1.35 1420.00 I 1.34 1.34 1.33 1.32 1.31 1445.00 1.29 1.26 1.23 1.20 1.17 1470.00 I 1.14 1.11 1.08 1.06 1.03 1495.00 I 1.00 .98 .95 .93 .92 or 1520.00 .92 .92 .91 .91 .91 1545.00 I .91 .91 .90 .90 .90 1570.00 I .90 .89 .89 .89 .89 1595.00 .89 .88 .88 .88 .88 "r 1620.00 I .87 .87 .87 .87 .87 1645.00 I .86 .86 .86 .86 .85 1670.00 .85 .85 .85 .84 .84 1695.00 I .84 .84 .84 .83 .83 "r'' 1720.00 I .83 .83 .82 .82 .82 1745.00 .82 .82 .81 .81 .81 1770.00 I .81 .80 .80 .80 .80 1795.00 I .79 .79 .79 .79 .79 WS 1820.00 I .78 .78 .78 .78 .77 1845.00 .77 .77 .77 .77 .76 1870.00 .76 .76 .76 .75 .75 1895.00 .75 .75 .75 .74 .74 or 1920.00 I .74 .74 .73 .73 .73 1945.00 I .73 .73 .72 .72 .72 1970.00 .72 .71 .71 .71 .71 1995.00 I .71 .70 .70 .70 .70 or 2020.00 I .69 .69 .69 .69 .68 or or S/N: Bentley Systems, Inc. rrr Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 ro or Type. . . . Pond Routed HYG (total out) Page 7.09 Name. . . . VAULT A OUT Tag: 10 Event: 10 yr or File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 10 or HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min Time on left represents time for first value in each row. SIM 2045.00 I .68 .68 .68 .68 .67 2070.00 I .67 .67 .67 .66 .66 2095.00 I .66 .66 .66 .65 .65 or 2120.00 I .65 .65 .64 .64 .64 2145.00 I .64 .64 .63 .63 .63 2170.00 I .63 .62 .62 .62 .62 2195.00 .61 .61 .61 .61 .61 .r 2220.00 I .60 .60 .60 .60 .59 2245.00 I .59 .59 .59 .59 .58 2270.00 I .58 .58 .58 .58 .57 2295.00 I .57 .57 .57 .56 .56 :rr, 2320.00 I .56 .56 .56 .55 .55 2345.00 I .55 .55 .54 .54 .54 2370.00 .54 .53 .53 .53 .53 2395.00 .53 .52 .52 .52 .52 or 2420.00 I .51 .51 .51 .51 .51 2445.00 I .50 .50 .50 .50 .49 2470.00 I .49 .49 .49 .49 .48 2495.00 I .48 .47 .47 .46 .46 r 2520.00 I .45 .45 .45 .44 .44 2545.00 .43 .43 .42 .42 .41 2570.00 I .41 .41 .40 .40 .39 2595.00 I .39 .39 .38 .38 .37 rr 2620.00 I .37 .36 .36 .35 .35 2645.00 I .34 .34 .33 .33 .32 2670.00 I .32 .31 .31 .31 .30 2695.00 .30 .29 .29 .29 .28 2720.00 .28 .27 .27 .27 .26 or 2745.00 .26 .26 .25 .25 .24 2770.00 I .24 .24 .23 .23 .22 2795.00 I .21 .21 .20 .20 .20 2820.00 I .19 .19 .18 .18 .17 or 2845.00 I .17 .17 .16 .16 .15 2870.00 .15 .15 .14 .14 .14 2895.00 ( .13 .13 .13 .12 .12 2920.00 .12 .12 .11 .11 .11 or 2945.00 .11 .10 .10 .10 .10 2970.00 .09 .09 .09 .09 .08 2995.00 I .08 .08 .08 .08 .08 3020.00 I .07 .07 .07 .07 .07 all 3045.00 I .07 .06 .06 .06 .06 3070.00 I .06 .06 .06 .05 .05 3095.00 .05 .05 .05 .05 .05 3120.00 I .05 .04 .04 .04 .04 or 3145.00 .04 .04 .04 .04 .04 or ori S/N: Bentley Systems, Inc. `r Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 ow or Type. . . . Pond Routed HYG (total o,it) Page 7.10 Name. . . . VAULT A OUT Tag: 10 Event: 10 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop INS Storm. . . Typell 24hr Tag: 10 or HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min Time on left represents time for first value in each row. or 3170.00 .04 .04 .03 .03 .03 3195.00 I .03 .03 .03 .03 .03 • 3220.00 I .03 .03 .03 .03 .03 rr 3245.00 .03 .02 .02 .02 .02 3270.00 I .02 .02 .02 .02 .02 3295.00 .02 .02 .02 .02 .02 3320.00 I .02 .02 .02 .02 .02 wr 3345.00 I .02 .02 .01 .01 .01 3370.00 .01 .01 .01 .01 .01 3395.00 I .01 .01 .01 .01 .01 3420.00 .01 .01 .01 .01 .01 w 3445.00 I .01 .01 .01 .01 .01 3470.00 I .01 .01 .01 .01 .01 3495.00 .01 .01 .01 .01 .01 3520.00 I .01 .01 .01 .01 .01 or 3545.00 .01 .01 .01 .01 .01 3570.00 I .01 .C1 .01 .00 .00 3595.00 I .00 .00 .00 .00 .00 3620.00 .00 .00 .00 .00 .00 3645.00 I .00 .00 .00 .00 .00 or 3670.00 .00 .00 .00 .00 .00 3695.00 I .00 rr or or rr or' oo oo WO S/N: Bentley Systems, Inc. om Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 rr err Appendix A A-1 ow Index of Starting Page Numbers for ID Names ur A AREA TO VAULT A. . . 2.01, 3.01 am BYPASS AREA - A. . . 2.03, 3.02 0 Outlet 2. . . 6.01, 6.06 P POI - A. . . 4.01, 4.06 rr V VAULT A. . . 5.01, 7.01, 7.02, 7.06, 7.07 rr W Watershed. . . 1.01 rr rrr OM MO MO OS OM MO MN r S/N: Bentley Systems, Inc. — Bentley PondPack (10.00.027.00) 12:41 AM 10/23/2014 ,rr ir• wr I�r fir �Yrr rr is �w► tor hriP �rrr 410 10 fr VAULT " It " DESIGN DATA Area to Vault B 1 Q�. Vault B Add link 20 Out 10 Bypass Area-B VAULT B - OVERALL DESIGN INFORMATION System B Design Information 'f Invert Information I Elevation Volume Table Bottom of System 392.00 Stage Elevation Total Volume Stone Invert below Pipe 392.00 0.00 392.00 0 ims• Stone Depth below Pipe 2 ft 0.50 392.50 2,647 Pipe Invert 394.00 1.00 393.00 5,294 Pipe Diameter 120 in = 10 ft 1.50 393.50 7,940 .• Pipe Radius 60 in = 5 ft 2.00 394.00 10,587 Pipe Area 78.54 sf 2.50 394.50 15,633 .. Stone Invert above Pipe 404.00 3.00 395.00 20,678 Stone Depth above Pipe 2 3.50 395.50 25,723 Top of System 406.00 4.00 396.00 30,769 .m Height of System 14 ft 4.50 396.50 35,814 Spacing between Barrels 3 ft 5.00 397.00 40,860 « BMP Stone width around system 2 ft 5.50 397.50 45,905 „_ Stone Porosity 40.00% 6.00 398.00 50,950 System Layout Information 6.50 398.50 55,996 Number of Barrels 8 7.00 399.00 61,041 -n* Number of Headers 2 7.50 399.50 66,087 Length per Barrel 102 ft 8.00 400.00 71,132 Length per Header 101 ft 8.50 400.50 76,177 "I Rectangular Footprint 105 ft x 126 ft 9.00 401.00 81,223 Storage Information 9.50 401.50 86,268 Storage Volume Required . 121,000 cf 10.00 402.00 91,314 mio Pipe Storage Provided 79,954 cf 10.50 402.50 96,359 Stone Storage Provided 42,129 cf 11.00 403.00 101,405 Total Storage Provided 122,083 cf 11.50 403.50 106,450 MN Stone Storage 12.00 404.00 111,495 Total Storage Provided 42,107 cf 12.50 404.50 114,142 mi. Storage Below Pipes 10,584 cf 13.00 405.00 116,789 Storage along Sides of Pipes 20,939 cf 13.50 405.50 119,436 Storage Above Pipes 10,584 cf 14.00 406.00 122,083 Required BMP Volume: 36,663 cf s. OW OW It MP Orifice Sizint Calculations ,,. 5th Street Station - Vault Total Drainage Area = 11.6 ac. Impervious Area = 10.1 ac. Water Quality Volume WQV required = 2 x (0.5 in / 12) x (Imp Area x 43,560) = 36663 cf. Line BMP Storage Provided (from pond volume table) (a) 40860 cf. Max. Head (h) at the required BMP storage from the elevation-storage curve for the facilty. (b) 4.5 Peak outflow rate (Qp) at the max. head for a drawdown time of 30 hrs. [Qp = S/(0.5 x 3600 x 30)] 0.0000185185 x Line (a) = (c) 0.76 Required orifice area (A) [A = Qp / (0.6 x (64.4 x h))^0.5)] Line (c) / [0.6 x (64.4 x Line (b))^0.5] = (d) 0.07 Diameter of the circular orifice. 2.0 x (Line (d) / 3.1415927)1'0.5 = (e) 0.31 ft 3.69 in (2" Min.) .. .. VAULT " I " .. ROUTING COMPUTATIONS .. .. .. .. .. Table of Contents i rr Table of Contents me ********************** MASTER SUMMARY ********************** Watershed Master Network Summary 1.01 or ********************** TC CALCULATIONS ********************* rr PRE-DEV B Tc Calcs 2.01 ********************** CN CALCULATIONS ********************* ru PRE-DEV B Runoff CN-Area 3.01 me ******************** RUNOFF HYDROGRAPHS ******************** am PRE-DEV B Pre 2 Unit Hyd. Summary 4.01 Unit Hyd. (HYG output) 4.02 ✓e PRE-DEV B Pre 10 Unit Hyd. Summary 4.04 Unit Hyd. (HYG output) 4.05 um wug or um am S/N: Bentley Systems, Inc. ma Bentley PondPack (10.00.027.00) 7:33 PM 10/22/2014 or. um Type. . . . Master Network Summary Page 1.01 Name. . . . Watershed ✓ File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm r MASTER DESIGN STORM SUMMARY Network Storm Collection: Albemarle County ow Total Depth Rainfall Return Event in Type RNF ID ma Pre 2 3.7000 Synthetic Curve Typeml 24hr Pre 10 5.6000 Synthetic Curve Typell 24hr MASTER NETWORK SUMMARY SCS Unit Hydrograph Method r (*Node=Outfall; +Node=Diversion;) (Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt) ✓ Max Return HYG Vol Qpeak Qpeak Max WSEL Pond Storage Node ID Type Event cu.ft Trun min cfs ft cu.ft o r *OUTFACE B JCT 2 63576 730.00 14.66 *OUTFALL B JCT 10 155889 730.00 40.10 PRE-DEV B AREA 2 63576 730.00 14.66 r PRE-DEV B AREA 10 155889 730.00 40.10 wr rr r or S/N: Bentley Systems, Inc. r Bentley PondPack (10.00.027.00) 7:33 PM 10/22/2014 Type. . . . Tc Calcs Page 2.01 Name. . . . PRE-DEV B wr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm �w. TIME OF CONCENTRATION CALCULATOR wr Segment #1: Tc: TR-55 Sheet Mannings n .4000 ,rr Hydraulic Length 150.00 ft 2yr, 24hr P 3.7000 in Slope .093000 ft/ft it Avg.Velocity .17 ft/sec Segment #1 Time: 14.94 min rr Segment #2: Tc: TR-55 Shallow Hydraulic Length 1149.00 ft w. Slope .064000 ft/ft Unpaved Avg.Velocity 4.08 ft/sec o r Segment #2 Time: 4.69 min Segment #3: Tc: TR-55 Channel MK Flow Area 320.0000 sq.ft Wetted Perimeter 41.00 ft Hydraulic Radius 7.80 ft me Slope .003000 ft/ft Mannings n .0350 Hydraulic Length 1602.00 ft +++ Avg.Velocity 9.17 ft/sec Segment #3 Time: 2.91 min Total Tc: 22.54 min rw S/N: Bentley Systems, Inc. w"` Bentley PondPack (10.00.027.00) 7:33 PM 10/22/2014 ma Type. . . . Tc Calcs Page 2.02 Name. . . . PRE-DEV B Mr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm ara Tc Equations used. . . ar SCS TR-55 Sheet Flow me Tc = (.007 * ( (n * Lf) **0.8) ) / ( (P**.5) * (Sf**.4) ) Where: Tc = Time of concentration, hrs n = Mannings n ar Lf = Flow length, ft P = 2yr, 24hr Rain depth, inches Sf = Slope, ara SCS TR-55 Shallow Concentrated Flow Unpaved surface: V = 16.1345 * (Sf**0.5) Paved surface: V = 20.3282 * (Sf**0.5) air Tc = (Lf / V) / (3600sec/hr) Where: V = Velocity, ft/sec Sf = Slope, ft/ft gra Tc = Time of concentration, hrs Lf = Flow length, ft Ali +rr wr ar AIM S/N: Bentley Systems, Inc. AM Bentley PondPack (10.00.027.00) 7:33 PM 10/22/2014 Am Type. . . . Tc Calcs Page 2.03 Name. . . . PRE-DEV B rr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm ow ___= SCS Channel Flow R = Aq / Wp a"' V = (1.49 * (R** (2/3) ) * (Sf**-0.5) ) / n Tc = (Lf / V) / (3600sec/hr) ■r Where: R = Hydraulic radius Aq = Flow area, sq.ft. Wp = Wetted perimeter, ft V = Velocity, ft/sec .r Sf = Slope, ft/ft n = Mannings n Tc = Time of concentration, hrs Lf = Flow length, ft rr aar MO rr rr MO WM aar •r MO S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 7:33 PM 10/22/2014 IMO im Type. . . . Runoff CN-Area Page 3.01 Name. . . . PRE-DEV B MI6 File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm ra RUNOFF CURVE NUMBER DATA Impervious ma Area Adjustment Adjusted Soil/Surface Description CN acres %C %UC CN Woods - good 77 3.610 77.00 dms Woods - good 55 10.330 55.00 Woods - good 70 7.720 70.00 ma COMPOSITE AREA & WEIGHTED CN ---> 21.660 64.01 (64) re as 4110 MO MS S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 7:33 PM 10/22/2014 Wm SO Type. . . . Unit Hyd. Summary Page 4.01 Name. . . . PRE-DEV B Tag: Pre 2 Event: 2 yr ma File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm Storm. . . Typell 24hr Tag: Pre 2 SCS UNIT HYDROGRAPH METHOD STORM EVENT: 2 year storm Duration = 1440.00 min Rain Depth = 3.7000 in Rain Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vaul Rain File -ID = - Typell 24hr Unit Hyd Type = Default Curvilinear ma HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vaul HYG File - ID = - PRE-DEV B Pre 2 Tc = 22.54 min Drainage Area = 21.660 acres Runoff CN= 64 MK Computational Time Increment = 3.005 min Computed Peak Time = 730.27 min Computed Peak Flow = 14.67 cfs Time Increment for HYG File = 5.00 min Peak Time, Interpolated Output = 730.00 min ■r Peak Flow, Interpolated Output = 14.66 cfs DRAINAGE AREA ID:PRE-DEV B CN = 64 Area = 21.660 acres S = 5.6250 in 0.2S = 1.1250 in Cumulative Runoff "1° .8086 in 63578 cu.ft HYG Volume. . . 63576 cu.ft (area under HYG curve) ***** SCS UNIT HYDROGRAPH PARAMETERS ***** Time Concentration, Tc = 22.539 min (ID: PRE-DEV B) nr Computational Incr, Tm = 3.005 min = 0.20000 Tp Unit Hyd. Shape Factor = 483.432 (37.46% under rising limb) K = 483.43/645.333, K = .7491 (also, K = 2/ (1+(Tr/Tp) ) rr Receding/Rising, Tr/Tp = 1.6698 (solved from K = .7491) Unit peak, qp = 65.33 cfs Unit peak time Tp = 15.026 min rr Unit receding limb, Tr = 60.105 min Total unit time, Tb = 75.131 min r■ am S/N: Bentley Systems, Inc. mr Bentley PondPack (10.00.027.00) 7:33 PM 10/22/2014 a mm Type. . . . Unit Hyd. (HYG output) Page 4.02 Name. . . . PRE-DEV B Tag: Pre 2 Event: 2 yr mm File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm Storm. . . Typell 24hr Tag: Pre 2 mom SCS UNIT HYDROGRAPH METHOD STORM EVENT: 2 year storm ""' Duration = 1440.00 min Rain Depth = 3.7000 in Rain Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vaul Rain File -ID = - Typell 24hr Unit Hyd Type = Default Curvilinear rr HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vaul HYG File - ID = - PRE-DEV B Pre 2 Tc = 22.54 min Drainage Area = 21.660 acres Runoff CN= 64 me Calc.Increment= 3.005 min Out.Incr.= 5.00 min HYG Volume = 63576 cu.ft HYDROGRAPH ORDINATES (cfs) rr Time I Output Time increment = 5.00 min min Time on left represents time for first value in each row. 695.00 .00 .02 .27 1.28 4.05 me 720;00 8.98 13.45 14.66 12.52 9.64 745.00 7.42 5.98 4.92 4.13 3.56 770.00 3.14 2.85 2.63 2.44 2.28 795.00 2.16 2.06 1.98 1.90 1.83 mm 820.00 I 1.75 1.69 1.63 1.57 1.52 845.00 1.46 1.41 1.37 1.34 1.31 870.00 I 1.29 1.27 1.25 1.23 1.22 895.00 I 1.20 1.18 1.16 1.14 1.13 920.00 I 1.11 1.09 1.07 1.05 1.03 ma 945.00 I 1.01 .99 .97 .95 .93 970.00 I .92 .90 .89 .88 .87 995.00 I .86 .85 .85 .84 .83 1020.00 I .83 .82 .81 .81 .80 u m 1045.00 I .79 .79 .78 .77 .77 1070.00 I .76 .75 .74 .74 .73 1095.00 I .72 .72 .71 .70 .69 1120.00 I .69 .68 .67 .66 .66 "'a 1145.00 .65 .64 .63 .63 .62 1170.00 .61 .60 .59 .59 .58 1195.00 .57 .56 .55 .55 .54 1220.00 I .54 .53 .53 .53 .53 +r 1245.00 I .53 .53 .53 .52 .52 1270.00 .52 .52 .52 .52 .52 1295.00 I .51 .51 .51 .51 .51 1320.00 .51 .51 .51 .50 .50 W.. 1345.00 .50 .50 .50 .50 .50 1370.00 I .50 .49 .49 .49 .49 1395.00 I .49 .49 .49 .48 .48 1420.00 .48 .48 .48 .48 .47 mm imm w S/N: Bentley Systems, Inc. "" Bentley PondPack (10.00.027.00) 7:33 PM 10/22/2014 .r Type. . . . Unit Hyd. (HYG output) Page 4.03 Name. . . . PRE-DEV B Tag: Pre 2 Event: 2 yr ✓ File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm Storm. . . Typell 24hr Tag: Pre 2 ✓r HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min Time on left represents time for first value in each row. o r 1445.00 I .45 .37 .26 .16 .09 1470.00 .05 .03 .02 .01 .01 1495.00 .00 .00 .00 am ar rr «r rr am aa r irr WO N W S/N: Bentley Systems, Inc. Bentley PondPack. (10.00.027.00) 7:33 PM 10/22/2014 r Type. . . . Unit Hyd. Summary Page 4.04 Name. . . . PRE-DEV B Tag: Pre 10 Event: 10 yr ore File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm Storm. . . Typell 24hr Tag: Pre 10 ar SCS UNIT HYDROGRAPH METHOD STORM EVENT: 10 year storm aw Duration = 1440.00 min Rain Depth = 5.6000 in Rain Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vaul Rain File -ID = - Typell 24hr Unit Hyd Type = Default Curvilinear orm HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vaul HYG File - ID = - PRE-DEV B Pre 10 Tc = 22.54 min Drainage Area = 21.660 acres Runoff CN= 64 OW Computational Time Increment = 3.005 min Computed Peak Time = 727.27 min err Computed Peak Flow = 41.38 cfs Time Increment for HYG File = 5.00 min Peak Time, Interpolated Output = 730.00 min rre Peak Flow, Interpolated Output = 40.10 cfs WARNING: The difference between calculated peak flow and interpolated peak flow is greater than 1.50% rr� DRAINAGE AREA ID:PRE-DEV B CN = 64 wr Area = 21.660 acres S = 5.6250 in 0.2S = 1.1250 in Cumulative Runoff 1.9827 in 155894 cu.ft air HYG Volume. . . 155889 cu.ft (area under HYG curve) ***** SCS UNIT HYDROGRAPH PARAMETERS ***** err Time Concentration, Tc = 22.539 min (ID: PRE-DEV B) Computational Incr, Tm = 3.005 min = 0.20000 Tp OW Unit Hyd. Shape Factor = 483.432 (37.46% under rising limb) K = 483.43/645.333, K = .7491 (also, K = 2/(1+(Tr/Tp) ) Receding/Rising, Tr/Tp = 1.6698 (solved from K = .7491) Unit peak, qp = 65.33 cfs Unit peak time Tp = 15.026 min Unit receding limb, Tr = 60.105 min Total unit time, Tb = 75.131 min err S/N: Bentley Systems, Inc. 'O Bentley PondPack (10.00.027.00) 7:33 PM 10/22/2014 owl MVP Type. . . . Unit Hyd. (HYG output) Page 4.05 Name. . . . PRE-DEV B Tag: Pre 10 Event: 10 yr ✓ File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm Storm. . . Typell 24hr Tag: Pre 10 ma SCS UNIT HYDROGRAPH METHOD STORM EVENT: 10 year storm mm Duration = 1440.00 min Rain Depth = 5.6000 in Rain Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vaul Rain File -ID = - Typell 24hr Unit Hyd Type = Default Curvilinear iliw HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vaul HYG File - ID = - PRE-DEV B Pre 10 Tc = 22.54 min Drainage Area = 21.660 acres Runoff CN= 64 am Calc.Increment= 3.005 min Out.Incr.= 5.00 min HYG Volume = 155889 cu.ft HYDROGRAPH ORDINATES (cfs) it Time Output Time increment = 5.00 min min I Time on left represents time for first value in each row. 630.00 I .00 .01 .02 .05 .10 m, 655.00 I .16 .23 .32 .42 .55 680.00 I .71 .89 1.13 1.50 2.36 705.00 I 4.52 9.03 17.68 30.14 39.61 730.00 I 40.10 32.80 24.47 18.31 14.39 mm 755.00 I 11.58 9.54 8.09 7.06 6.34 780.00 5.79 5.34 4.97 4.69 4.47 805.00 4.27 4.09 3.92 3.76 3.61 830.00 I 3.47 3.34 3.22 3.10 3.00 855.00 2.90 2.83 2.77 2.72 2.67 rw 880.00 I 2.63 2.59 2.55 2.51 2.47 905.00 I 2.43 2.38 2.34 2.30 2.26 930.00 I 2.22 2.18 2.14 2.09 2.05 955.00 I 2.01 1.97 1.92 1.88 1.85 'm 980.00 I 1.82 1.80 1.78 1.77 1.75 1005.00 I 1.73 1.72 1.71 1.69 1.68 1030.00 1.66 1.65 1.63 1.62 1.60 1055.00 1.59 1.57 1.56 1.54 1.53 mm 1080.00 I 1.51 1.49 1.48 1.46 1.45 1105.00 1.43 1.42 1.40 1.39 1.37 1130.00 I 1.35 1.34 1.32 1.31 1.29 1155.00 I 1.27 1.26 1.24 1.23 1.21 ++m 1180.00 I 1.19 1.18 1.16 1.14 1.13 1205.00 I 1.11 1.10 1.09 1.08 1.07 1230.00 I 1.07 1.06 1.06 1.05 1.05 1255.00 I 1.05 1.05 1.04 1.04 1.04 mm 1280.00 I 1.03 1.03 1.03 1.03 1.02 1305.00 I 1.02 1.02 1.01 1.01 1.01 1330.00 I 1.01 1.00 1.00 1.00 .99 1355.00 I .99 .99 .98 .98 .98 WY OWN NW S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 7:33 PM 10/22/2014 mm ww Type. . . . Unit Hyd. (HYG output) Page 4.06 Name. . . . PRE-DEV B Tag: Pre 10 Event: 10 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm o r Storm. . . Typell 24hr Tag: Pre 10 HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min Time on left represents time for first value in each row. u m 1380.00 .98 .97 .97 .97 .96 1405.00 .96 .96 .95 .95 .95 1430.00 I .95 .94 .94 .89 .74 it 1455.00 I .52 .31 .18 .10 .06 1480.00 .03 .02 .01 .01 .00 1505.00 .00 .00 rw ®rr aw woo INS IWO IWO S/N: Bentley Systems, Inc. mr Bentley PondPack (10.00.027.00) 7:33 PM 10/22/2014 r+ u m Appendix A A-1 r Index of Starting Page Numbers for ID Names se P PRE-DEV B. . . 2.01, 3.01, 4.01, 4.02, 4.04, 4.05 am W Watershed. . . 1.01 ✓r OW OW rr Or+ IOW O W O WN irr ar S/N: Bentley Systems, Inc. OW Bentley PondPack (10.00.027.00) 7:33 PM 10/22/2014 w Table of Contents i r or Table of Contents or ********************** MASTER SUMMARY ********************** Watershed Master Network Summary 1.01 rr ********************** TC CALCULATIONS ********************* or AREA TO VAULT B Tc Calcs 2.01 BYPASS AREA-B. . . Tc Calcs 2.03 ror ********************** CN CALCULATIONS ********************* w AREA TO VAULT B Runoff CN-Area 3.01 BYPASS AREA-B. . . Runoff CN-Area 3.02 or *********************** HYG ADDITION *********************** or POI - B Node: Addition Summary 4.01 Node: Addition Summary 4.05 or *********************** POND VOLUMES *********************** VAULT B Vol: Elev-Volume 5.01 or ******************** OUTLET STRUCTURES ********************* rr Outlet 2 Outlet Input Data 6.01 or oo rr or S/N: Bentley Systems, Inc. oo Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 Table of Contents ii w Table of Contents (continued) Composite Rating Curve 6.06 all *********************** POND ROUTING *********************** �+ VAULT B OUT 2 Pond Routing Summary 7.01 Pond Routed HYG (total out) 7.02 rrr VAULT B OUT 10 Pond Routing Summary 7.06 Pond Routed HYG (total out) 7.07 arr r rrr err Orr orr orr rr rr S/N: Bentley Systems, Inc. 'r" Bentley PondPacY (10.00.027.00) 12:38 AM 10/23/2014 em or Type. . . . Master Network Summary Page 1.01 Name. . . . Watershed File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop dor ar MASTER DESIGN STORM SUMMARY wr Network Storm Collection: Albemarle County w Total Depth Rainfall Return Event in Type RNF ID rr. 2 3.7000 Synthetic Curve Typell 24hr 10 5.6000 Synthetic Curve Typell 24hr mo MASTER NETWORK SUMMARY SCS Unit Hydrograph Method ow (*Node=Outfall; +Node=Diversion;) (Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt) sw Max Return HYG Vol Qpeak Qpeak Max WSEL Pond Storage Node ID Type Event cu.ft Trun min cfs ft cu.ft w AREA TO VAULT B AREA 2 131838 715.00 53.11 AREA TO VAULT B AREA 10 210851 715.00 82.67 BYPASS AREA-B AREA 2 31238 715.00 12.66 ow BYPASS AREA-B AREA 10 68671 715.00 29.47 *POI - B JCT 2 160397 720.00 14.48 *POI - B JCT 10 276843 720.00 36.98 MIN VAULT B IN POND 2 131838 715.00 53.11 VAULT B IN POND 10 210851 715.00 82.67 +r+ VAULT B OUT POND 2 129158 765.00 3.05 400.71 78295 VAULT B OUT POND 10 208171 730.00 14.36 404.40 113602 r ors w oo S/N: Bentley Systems, Inc. ON Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 oo Type. . . . Tc Calcs Page 2.01 Name. . . . AREA TO VAULT B rr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop as TIME OF CONCENTRATION CALCULATOR wr r+r Segment #1: Tc: User Defined Segment #1 Time: 5.00 min OW Total Tc: 5.00 min mo Calculated Tc < Min.Tc: Use Minimum To. . . Use Tc = 5.00 min MN NO OW OW OW +r OW OW OM OW S/N: Bentley Systems, Inc. e' Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 r Type. . . . Tc Calcs Page 2.02 Name. . . . AREA TO VAULT B File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Tc Equations used. . . ___= User Defined or Tc = Value entered by user Where: Tc = Time of concentration rr err Oil arr rr wr MIN aft wr rr S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 AP Type. . . . Tc Calcs Page 2.03 Name. . . . BYPASS AREA-B eft File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop TIME OF CONCENTRATION CALCULATOR for r Segment #1: Tc: User Defined Segment #1 Time: 5.00 min or Total Tc: 5.00 min r Calculated Tc < Min.Tc: Use Minimum To. . . Use Tc = 5.00 min eor rib au woo rr .r was er S/N: Bentley Systems, Inc. um Bentley PondPac}_ (10.00.027.00) 12:38 AM 10/23/2014 ms Type. . . . Tc Calcs Page 2.04 Name. . . . BYPASS AREA-B r File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop rr Tc Equations used. . . ___= User Defined me Tc = Value entered by user Where: Tc = Time of concentration WO rr OM OM O M O M MO MO MO OM MO WO S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 rr Type. . . . Runoff CN-Area Page 3.01 Name. . . . AREA TO VAULT B rr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop rr RUNOFF CURVE NUMBER DATA ma Impervious rr Area Adjustment Adjusted Soil/Surface Description CN acres %C %UC CN Urban Districts - Commercial & Busi 92 .700 92.00 rr Urban Districts - Commercial & Busi 94 4.500 94.00 Urban Districts - Commercial & Busi 95 5.400 95.00 Impervious Areas - Paved parking lo 98 1.000 98.00 mu COMPOSITE AREA & WEIGHTED CN ---> 11.600 94.69 (95) ma or No ow WA rr AO rr or S/N: Bentley Systems, Inc. °" Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 om ma Type. . . . Runoff CN-Area Page 3.02 Name. . . . BYPASS AREA-B AM File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop 01. RUNOFF CURVE NUMBER DATA Impervious IAA Area Adjustment Adjusted Soil/Surface Description CN acres %C %UC CN Impervious Areas - Paved parking 10 98 2.570 98.00 mei Woods - good 55 4.590 55.00 Open space (Lawns,parks etc.) Goo 61 .360 61.00 Open space (Lawns,parks etc.) - Goo 74 .060 74.00 Open space (Lawns,parks etc.) - Goo 80 .030 80.00 COMPOSITE AREA & WEIGHTED CN ---> 7.610 70.05 (70) Am ma sot 11111 S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 mga me Type. . . . Node: Addition Summary Page 4.01 Name. . . . POI - B Event: 2 yr ma File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 2 SUMMARY FOR HYDROGRAPH ADDITION at Node: POI - B or HYG Directory: H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\ Upstream Link ID Upstream Node ID HYG file HYG ID HYG tag ma ADDLINK 20 BYPASS AREA-B BYPASS AREA-B 2 OUTFALL-B VAULT B IN OUTFALL-B 2 r INFLOWS TO: POI - B Volume Peak Time Peak Flow r HYG file HYG ID HYG tag cu.ft min cfs BYPASS AREA-B 2 31238 715.00 12.66 OUTFALL-B 2 129158 765.00 3.05 TOTAL FLOW INTO: POI - B Volume Peak Time Peak Flow HYG file HYG ID HYG tag cu.ft min cfs mo POI - B 2 160397 720.00 14.48 arr rr rr OW rr WW r ar S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 r�u am Type. . . . Node: Addition Summary Page 4.02 Name. . . . POI - B Event: 2 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop ma Storm. . . Typell 24hr Tag: 2 ria TOTAL NODE INFLOW. . . HYG file = +M HYG ID = POI - B HYG Tag = 2 Peak Discharge = 14.48 cfs ma Time to Peak = 720.00 min HYG Volume = 160397 cu.ft WA HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min Time on left represents time for first value in each row. MA 385.00 I .00 .01 .02 .03 .04 410.00 I .05 .06 .07 .08 .10 435.00 .11 .12 .13 .14 .15 460.00 .16 .17 .18 .19 .20 485.00 .21 .22 .24 .24 .25 ra 510.00 .26 .27 .28 .29 .29 535.00 .30 .31 .32 .34 .35 560.00 I .36 .37 .38 .39 .39 585.00 I .40 .41 .42 .43 .44 MA 610.00 I .45 .46 .47 .49 .49 635.00 I .50 .51 .51 .52 .53 660.00 I .54 .57 .61 .65 .71 685.00 I .77 .84 1.18 2.04 3.69 r" 710.00 I 6.87 14.35 14.48 7.80 5.51 735.00 I 5.17 4.99 4.77 4.51 4.33 760.00 I 4.25 4.20 4.15 4.09 4.02 785.00 I 3.97 3.93 3.89 3.85 3.81 "r 810.00 I 3.77 3.73 3.69 3.66 3.62 835.00 I 3.58 3.54 3.51 3.48 3.46 860.00 I 3.44 3.41 3.39 3.37 3.34 885.00 I 3.32 3.29 3.27 3.24 3.22 era 910.00 I 3.19 3.16 3.14 3.11 3.08 935.00 I 3.06 3.03 3.00 2.97 2.94 960.00 I 2.91 2.89 2.86 2.84 2.82 985.00 I 2.79 2.77 2.75 2.73 2.70 ma 1010.00 I 2.68 2.65 2.63 2.61 2.58 1035.00 2.56 2.53 2.51 2.49 2.46 1060.00 I 2.44 2.41 2.39 2.36 2.34 1085.00 I 2.31 2.28 2.26 2.23 2.21 am 1110.00 I 2.18 2.16 2.14 2.11 2.08 1135.00 I 2.05 2.01 1.97 1.94 1.90 ma WA MA S/N: Bentley Systems, Inc. r Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 ma mm Type. . . . Node: Addition Summary Page 4.03 Name. . . . POI - B Event: 2 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop r. Storm. . . Typell 24hr Tag: 2 moo HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min Time on left represents time for first value in each row. r 1160.00 1.87 1.83 1.80 1.77 1.74 1185.00 1.71 1.68 1.65 1.62 1.59 1210.00 1.56 1.54 1.51 1.49 1.48 mm 1235.00 1.46 1.44 1.42 1.41 1.39 1260.00 1.38 1.36 1.34 1.33 1.32 1285.00 1.30 1.29 1.27 1.26 1.25 1310.00 1.23 1.22 1.21 1.20 1.18 mm 1335.00 1.17 1.16 1.15 1.14 1.13 1360.00 1.12 1.11 1.09 1.08 1.08 1385.00 1.08 1.08 1.08 1.07 1.07 1410.00 1.07 1.07 1.07 1.06 1.06 mm 1435.00 I 1.06 1.06 .91 .86 .85 1460.00 .85 .85 .84 .84 .84 1485.00 .84 .83 .83 .83 .83 1510.00 .82 .82 .82 .82 .81 1535.00 .81 .81 .81 .80 .80 r`"` 1560.00 I .80 .79 .79 .79 .79 1585.00 .78 .78 .78 .78 .77 1610.00 .77 .77 .77 .76 .76 1635.00 .76 .76 .75 .75 .75 "" 1660.00 .74 .74 .74 .74 .73 1685.00 .73 .73 .73 .72 .72 1710.00 .72 .72 .71 .71 .71 1735.00 I .71 .70 .70 .70 .69 - 1760.00 I .69 .69 .69 .68 .68 1785.00 I .68 .68 .67 .67 .67 1810.00 I .67 .66 .66 .66 .66 1835.00 I .65 .65 .65 .65 .64 ar. 1860.00 I .64 .64 .63 .63 .63 1885.00 I .63 .62 .62 .62 .62 1910.00 .61 .61 .61 .60 .60 1935.00 I .60 .60 .59 .59 .59 mm 1960.00 .59 .58 .58 .58 .58 1985.00 .57 .57 .57 .57 .56 2010.00 .56 .56 .56 .55 .55 2035.00 .55 .54 .54 .54 .54 r 2060.00 .53 .53 .53 .53 .52 2085.00 I .52 .52 .52 .51 .51 2110.00 I .51 .51 .50 .50 .50 2135.00 I .50 .49 .49 .49 .49 MM 2160.00 I .48 .48 .47 .47 .46 2185.00 I .45 .45 .44 .44 .43 2210.00 I .43 .42 .42 .41 .41 2235.00 I .41 .40 .40 .39 .39 um 2260.00 I .38 .38 .37 .36 .36 «r r. S/N: Bentley Systems, Inc. UM Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 ow Type. . . . Node: Addition Summary Page 4.04 Name. . . . POI - B Event: 2 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop me Storm. . . Typell 24hr Tag: 2 ar HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. me 2285.00 I .35 .35 .34 .34 .33 2310.00 I .32 .32 .31 .31 .30 2335.00 I .30 .29 .29 .29 .28 - 2360.00 I .28 .27 .27 .26 .26 2385.00 I .25 .25 .25 .24 .24 2410.00 I .23 .23 .22 .21 .21 2435.00 .20 .20 .19 .19 .18 ow 2460.00 I .18 .17 .17 .16 .16 2485.00 .15 .15 .15 .14 .14 2510.00 I .13 .13 .13 .12 .12 2535.00 I .12 .11 .11 .11 .10 2560.00 .10 .10 .10 .09 .09 ww 2585.00 .09 .09 .08 .08 .08 2610.00 .08 .08 .07 .07 .07 2635.00 .07 .07 .06 .06 .06 or 2660.00 .06 .06 .06 .05 .05 2685.00 .05 .05 .05 .05 .05 2710.00 .05 .04 .04 .04 .04 2735.00 I .04 .04 .04 .04 .04 2760.00 I .03 .03 .03 .03 .03 w r 2785.00 .03 .03 .03 .03 .03 2810.00 I .03 .03 .02 .02 .02 2835.00 I .02 .02 .02 .02 .02 2860.00 I .02 .02 .02 .02 .02 ow 2885.00 I .02 .02 .02 .02 .02 2910.00 I .02 .01 .01 .01 .01 2935.00 I .01 .01 .01 .01 .01 2960.00 I .01 .01 .01 .01 .01 um 2985.00 I .01 .01 .01 .01 .01 3010.00 I .01 .01 .01 .01 .01 3035.00 I .01 .01 .01 .01 .01 3060.00 I .01 .01 .01 .01 .01 ese 3085.00 I .01 .01 .01 .01 .01 3110.00 I .01 .00 .00 .00 .00 3135.00 I .00 .00 .00 .00 .00 3160.00 I .00 .00 .00 .00 .00 NW 3185.00 .00 .00 .00 .00 .00 3210.00 I .00 w w ow we wr S/N: Bentley Systems, Inc. we Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 ww ow Type. . . . Node: Addition Summary Page 4.05 Name. . . . POI - B Event: 10 yr i.r File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 10 w SUMMARY FOR HYDROGRAPH ADDITION at Node: POI - B ON HYG Directory: H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\ Upstream Link ID Upstream Node ID HYG file HYG ID HYG tag mm ADDLINK 20 BYPASS AREA-B BYPASS AREA-B 10 OUTFALL-B VAULT B IN OUTFALL-B 10 um INFLOWS TO: POI - B Volume Peak Time Peak Flow err HYG file HYG ID HYG tag cu.ft min cfs BYPASS AREA-B 10 68671 715.00 29.47 OUTFALL-B 10 208171 730.00 14.36 mm TOTAL FLOW INTO: POI - B Volume Peak Time Peak Flow mm HYG file HYG ID HYG tag cu.ft min cfs POI - B 10 276843 720.00 36.98 mm mm mm mm mm ma moo mot S/N: Bentley Systems, Inc. um Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 NW Type. . . . Node: Addition Summary Page 4.06 Name. . . . POI - B Event: 10 yr rr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . TypelI 24hr Tag: 10 we TOTAL NODE INFLOW. . . HYG file = ow HYG ID = POI - B HYG Tag = 10 Peak Discharge = 36.98 cfs ww Time to Peak = 720.00 min HYG Volume = 276843 cu.ft rr HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min Time on left represents time for first value in each row. ow 280.00 I .00 .01 .02 .03 .05 305.00 .06 .08 .09 .10 .12 330.00 .13 .14 .16 .17 .19 355.00 I .20 .22 .23 .24 .25 two 380.00 I .26 .27 .28 .29 .30 405.00 I .30 .31 .32 .33 .34 430.00 I .35 .36 .37 .38 .39 455.00 I .40 .40 .41 .42 .43 480.00 I .43 .44 .45 .46 .47 w. 505.00 I .48 .49 .49 .49 .50 530.00 I .50 .51 .52 .52 .53 555.00 I .53 .55 .56 .58 .59 580.00 I .61 .63 .65 .67 .69 "" 605.00 I .72 .75 .78 .81 .85 630.00 I .89 .93 .98 1.03 1.09 655.00 I 1.16 1.23 1.32 1.44 1.57 680.00 1.71 1.87 2.06 3.32 6.06 ""' 705.00 10.91 18.49 32.85 36.98 24.20 730.00 19.70 18.50 17.52 16.64 15.65 755.00 14.80 14.07 13.43 12.72 11.81 780.00 10.95 10.18 9.50 8.88 8.32 'o 805.00 ( 7.81 7.34 6.98 6.65 6.34 830.00 6.05 5.77 5.50 5.26 5.09 855.00 I 4.99 4.90 4.80 4.71 4.62 880.00 I 4.53 4.45 4.36 4.28 4.20 ar 905.00 I 4.12 4.06 4.03 4.01 3.97 930.00 I 3.94 3.91 3.88 3.85 3.81 955.00 I 3.78 3.75 3.72 3.69 3.67 980.00 I 3.65 3.63 3.61 3.58 3.56 w, 1005.00 3.54 3.52 3.49 3.47 3.45 1030.00 I 3.42 3.40 3.38 3.35 3.33 ow wo via S/N: Bentley Systems, Inc. ow Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 ow milif Type. . . . Node: Addition Summary Page 4.07 Name. . . . POI - B Event: 10 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop ow Storm. . . Typell 24hr Tag: 10 are HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. ris 1055.00 3.30 3.28 3.26 3.23 3.21 1080.00 3.19 3.16 3.14 3.11 3.09 1105.00 I 3.06 3.04 3.01 2.99 2.96 um 1130.00 2.94 2.92 2.89 2.87 2.84 1155.00 2.81 2.79 2.76 2.73 2.71 1180.00 I 2.68 2.65 2.63 2.60 2.58 1205.00 I 2.55 2.53 2.50 2.48 2.46 am 1230.00 I 2.44 2.41 2.39 2.37 2.35 1255.00 I 2.33 2.30 2.28 2.26 2.24 1280.00 I 2.22 2.19 2.16 2.13 2.10 1305.00 I 2.07 2.04 2.02 1.99 1.96 era 1330.00 I 1.94 1.91 1.89 1.87 1.84 1355.00 I 1.82 1.80 1.78 1.76 1.74 1380.00 I 1.72 1.70 1.68 1.66 1.65 1405.00 I 1.63 1.62 1.60 1.59 1.58 1430.00 ( 1.57 1.55 1.54 1.25 1.14 mw 1455.00 I 1.10 1.08 1.05 1.02 1.00 1480.00 I .98 .95 .93 .91 .88 1505.00 I .87 .87 .87 .86 .86 1530.00 I .86 .86 .85 .85 .85 me 1555.00 I .85 .84 .84 .84 .84 1580.00 I .83 .83 .83 .83 .82 1605.00 I .82 .82 .82 .81 .81 1630.00 I .81 .80 .80 .80 .80 "a" 1655.00 I .79 .79 .79 .79 .78 1680.00 .78 .78 .78 .77 .77 1705.00 I .77 .77 .76 .76 .76 1730.00 .75 .75 .75 .75 .74 wer 1755.00 .74 .74 .74 .73 .73 1780.00 ( .73 .73 .72 .72 .72 1805.00 .72 .71 .71 .71 .71 1830.00 .70 .70 .70 .69 .69 'i 1855.00 I .69 .69 .68 .68 .68 1880.00 I .68 .67 .67 .67 .67 1905.00 I .66 .66 .66 .65 .65 1930.00 I .65 .65 .64 .64 .64 +me 1955.00 I .64 .63 .63 .63 .63 1980.00 .62 .62 .62 .61 .61 2005.00 I .61 .61 .60 .60 .60 2030.00 .60 .59 .59 .59 .59 o,. 2055.00 I .58 .58 .58 .58 .57 2080.00 I .57 .57 .57 .56 .56 2105.00 I .56 .55 .55 .55 .55 2130.00 I .54 .54 .54 .54 .53 r 2155.00 I .53 .53 .53 .52 .52 aar ar S/N: Bentley Systems, Inc. - Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 .r r Type. . . . Node: Addition Summary Page 4.08 Name. . . . POI - B Event: 10 yr r File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 10 IM HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. um 2180.00 .52 .51 .51 .51 .51 2205.00 .50 .50 .50 .50 .49 2230.00 ( .49 .49 .49 .49 .48 wr 2255.00 .47 .47 .46 .46 .45 2280.00 .45 .44 .44 .43 .43 2305.00 I .42 .42 .41 .41 .40 2330.00 I .40 .39 .39 .39 .38 r„ 2355.00 I .37 .37 .36 .36 .35 2380.00 I .35 .34 .33 .33 .32 2405.00 I .32 .31 .31 .30 .30 2430.00 I .29 .29 .28 .28 .28 or 2455.00 I .27 .27 .26 .26 .25 2480.00 I .25 .25 .24 .24 .23 2505.00 I .22 .22 .21 .21 .20 2530.00 I .19 .19 .18 .18 .17 OW 2555.00 I .17 .17 .16 .16 .15 2580.00 I .15 .14 .14 .14 .13 2605.00 I .13 .13 .12 .12 .12 2630.00 I .11 .11 .11 .10 .10 2655.00 I .10 .10 .09 .09 .09 ar` 2680.00 I .09 .08 .08 .08 .08 2705.00 I .08 .07 .07 .07 .07 2730.00 I .07 .06 .06 .06 .06 2755.00 I .06 .06 .05 .05 .05 ma 2780.00 .05 .05 .05 .05 .04 2805.00 I .04 .04 .04 .04 .04 2830.00 I .04 .04 .04 .04 .03 2855.00 I .03 .03 .03 .03 .03 'o" 2880.00 .03 .03 .03 .03 .03 2905.00 .03 .02 .02 .02 .02 2930.00 .02 .02 .02 .02 .02 2955.00 .02 .02 .02 .02 .02 ✓ 2980.00 .02 .02 .02 .02 .02 3005.00 .01 .01 .01 .01 .01 3030.00 .01 .01 .01 .01 .01 3055.00 .01 .01 .01 .01 .01 ✓ 3080.00 I .01 .01 .01 .01 .01 3105.00 .01 .01 .01 .01 .01 3130.00 I .01 .01 .01 .01 .01 3155.00 I .01 .01 .01 .01 .01 1r. 3180.00 .01 .01 .01 .01 .01 3205.00 .00 .00 .00 .00 .00 3230.00 .00 .00 .00 .00 .00 3255.00 I .00 .00 .00 .00 .00 SIN 3280.00 .00 .00 .00 .00 .00 NO +r S/N: Bentley Systems, Inc. 'w" Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 MI sow Type. . . . Vol: Elev-Volume Page 5.01 Name. . . . VAULT B wow File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop •r USER DEFINED VOLUME RATING TABLE Elevation Volume err (ft) (cu.ft) 392.00 0 392.50 2647 wow 393.00 5294 393.50 7940 394.00 10587 394.50 15633 o, 395.00 20678 395.50 25723 396.00 30769 396.50 35814 r 397.00 40860 397.50 45905 398.00 50950 398.50 55996 399.00 61041 399.50 66087 400.00 71132 400.50 76177 401.00 81223 O` 401.50 86268 402.00 91314 402.50 96359 403.00 101405 403.50 106450 404.00 111495 404.50 114142 405.00 116789 405.50 119436 406.00 122083 low ww rr wr wr r S/N: Bentley Systems, Inc. ww Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 ww woo Type. . . . Outlet Input Data Page 6.01 Name. . . . Outlet 2 r File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop err REQUESTED POND WS ELEVATIONS: ar Min. Elev.= 392.00 ft Increment = .50 ft Max. Elev.= 406.00 ft r ********************************************** OUTLET CONNECTIVITY ********************************************** mw ---> Forward Flow Only (UpStream to DnStream) <--- Reverse Flow Only (DnStream to Upstream) <---> Forward and Reverse Both Allowed ow Structure No. Outfall El, ft E2, ft Orifice-Circular UD ---> CO 392.500 406.000 Culvert-Circular Cl ---> CO 397.000 406.000 so Culvert-Circular C2 ---> CO 401.000 406.000 Culvert-Circular CO ---> TW 385.500 406.000 TW SETUP, DS Channel um ow r +rr +w i+ S/N: Bentley Systems, Inc. 'o"' Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 +rw Type. . . . Outlet Input Data Page 6.02 Name. . . . Outlet 2 mom File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop ew OUTLET STRUCTURE INPUT DATA om Structure ID = UD Structure Type = Orifice-Circular rr # of Openings = 1 Invert Elev. = 392.50 ft Diameter = 4.00 in ,r,. Orifice Coeff. _ .600 UM IWO nw wr rr ar IOW rrr aw S/N: Bentley Systems, Inc. om Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 ow um Type. . . . Outlet Input Data Page 6.03 Name. . . . Outlet 2 w File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop AN OUTLET STRUCTURE INPUT DATA Structure ID = Cl Structure Type = Culvert-Circular wr No. Barrels = 1 Barrel Diameter = 6.00 in Upstream Invert = 397.00 ft Dnstream Invert = 395.00 ft „t. Horiz. Length = 12.00 ft Barrel Length = 12.17 ft Barrel Slope = .16667 ft/ft No OUTLET CONTROL DATA. . . Mannings n = .0130 Ke = .5000 (forward entrance loss) Kb = .078805 (per ft of full flow) ®r Kr = .5000 (reverse entrance loss) HW Convergence = .001 +/- ft INLET CONTROL DATA. . . Equation form = 1 Inlet Control K = .0078 Inlet Control M = 2.0000 Inlet Control c = .03790 Inlet Control Y = .6900 Ti ratio (HW/D) = 1.052 T2 ratio (HW/D) = 1.213 Slope Factor = -.500 om Use unsubmerged inlet control Form 1 equ. below Ti elev. Use submerged inlet control Form 1 equ. above T2 elev. In transition zone between unsubmerged and submerged inlet control, interpolate between flows at Ti & T2. . . At Tl Elev = 397.53 ft ---> Flow = .49 cfs At T2 Elev = 397.61 ft ---> Flow = .56 cfs �+r OM NO OM S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 r. ww Type. . . . Outlet Input Data Page 6.04 Name. . . . Outlet 2 wr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop w OUTLET STRUCTURE INPUT DATA ww Structure ID = C2 Structure Type = Culvert-Circular it No. Barrels = 1 Barrel Diameter = 15.00 in Upstream Invert = 401.00 ft Dnstream Invert = 399.00 ft _ Horiz. Length = 12.00 ft Barrel Length = 12.17 ft Barrel Slope = .16667 ft/ft mm OUTLET CONTROL DATA. . . Mannings n = .0130 Ke = .5000 (forward entrance loss) Kb = .023225 (per ft of full flow) r Kr = .5000 (reverse entrance loss) HW Convergence = .001 +/- ft INLET CONTROL DATA. . . Equation form = 1 we Inlet Control K = .0078 Inlet Control M = 2.0000 Inlet Control c = .03790 Inlet Control Y = .6900 ww Ti ratio (HW/D) = 1.052 T2 ratio (HW/D) = 1.213 Slope Factor = -.500 ""r Use unsubmerged inlet control Form 1 equ. below Tl elev. Use submerged inlet control Form 1 equ. above T2 elev. In transition zone between unsubmerged and submerged inlet control, 'm" interpolate between flows at Ti & T2. . . At Ti Elev = 402.32 ft ---> Flow = 4.80 cfs At T2 Elev = 402.52 ft ---> Flow = 5.49 cfs WP wr rr S/N: Bentley Systems, Inc. 'gm Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 ww Type. . . . Outlet Input Data Page 6.05 Name. . . . Outlet 2 rr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop OUTLET STRUCTURE INPUT DATA ww Structure ID = CO Structure Type = Culvert-Circular tr No. Barrels = 1 Barrel Diameter = 24.00 in Upstream Invert = 385.50 ft Dnstream Invert = 381.50 ft wo Horiz. Length = 187.00 ft Barrel Length = 187.04 ft Barrel Slope = .02139 ft/ft w w OUTLET CONTROL DATA. . . Mannings n = .0130 Ke = .5000 (forward entrance loss) Kb = .012411 (per ft of full flow) AI Kr = .5000 (reverse entrance loss) HW Convergence = .001 +/- ft INLET CONTROL DATA. . . Equation form = 1 "" Inlet Control K = .0098 Inlet Control M = 2.0000 Inlet Control c = .03980 Inlet Control Y = .6700 ww Tl ratio (HW/D) = 1.150 T2 ratio (HW/D) = 1.296 Slope Factor = -.500 Use unsubmerged inlet control Form 1 equ. below Tl elev. Use submerged inlet control Form 1 equ. above T2 elev. In transition zone between unsubmerged and submerged inlet control, ww interpolate between flows at Tl & T2. . . At Tl Elev = 387.80 ft ---> Flow = 15.55 cfs At T2 Elev = 388.09 ft ---> Flow = 17.77 cfs ww Structure ID = TW Structure Type = TW SETUP, DS Channel rr. FREE OUTFALL CONDITIONS SPECIFIED CONVERGENCE TOLERANCES. . . Maximum Iterations= 40 Min. TW tolerance = .01 ft Max. TW tolerance = .01 ft Min. HW tolerance = .01 ft Max. HW tolerance = .01 ft 'w Min. Q tolerance = .00 cfs Max. Q tolerance = .00 cfs +rr S/N: Bentley Systems, Inc. ww Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 ww .It Type. . . . Composite Rating Curve Page 6.06 Name. . . . Outlet 2 rrr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop w ***** COMPOSITE OUTFLOW SUMMARY **** .. WS Elev, Total Q Notes Converge Elev. Q TW Elev Error ft cfs ft +/-ft Contributing Structures as 392.00 .00 Free Outfall (no Q: UD,C1,C2,C0) 392.50 .00 Free Outfall (no Q: UD,C1,C2,C0) 393.00 .24 Free Outfall UD,C0 (no Q: Cl,C2) ,tm 393.50 .38 Free Outfall UD,C0 (no Q: Cl,C2) 394.00 .48 Free Outfall UD,C0 (no Q: Cl,C2) 394.50 .57 Free Outfall UD,C0 (no Q: Cl,C2) 395.00 .64 Free Outfall UD,C0 (no Q: Cl,C2) 395.50 .71 Free Outfall UD,C0 (no Q: Cl,C2) 396.00 .77 Free Outfall UD,C0 (no Q: Cl,C2) 396.50 .82 Free Outfall UD,C0 (no Q: Cl,C2) 397.00 .87 Free Outfall UD,C0 (no Q: Cl,C2) 397.50 1.29 Free Outfall UD,C1,C0 (no Q: C2) wo 398.00 1.81 Free Outfall UD,C1,C0 (no Q: C2) 398.50 2.12 Free Outfall UD,C1,C0 (no Q: C2) 399.00 2.37 Free Outfall UD,C1,C0 (no Q: C2) 399.50 2.59 Free Outfall UD,C1,C0 (no Q: C2) 400.00 2.79 Free Outfall UD,C1,C0 (no Q: C2) 400.50 2.98 Free Outfall UD,C1,C0 (no Q: C2) 401.00 3.15 Free Outfall UD,C1,C0 (no Q: C2) 401.50 4.01 Free Outfall UD,C1,C2,C0 402.00 5.94 Free Outfall UD,C1,C2,C0 402.50 8.39 Free Outfall UD,C1,C2,C0 403.00 10.79 Free Outfall UD,C1,C2,C0 403.50 12.21 Free Outfall UD,C1,C2,C0 a.' 404.00 13.46 Free Outfall UD,C1,C2,C0 404.50 14.59 Free Outfall UD,C1,C2,C0 405.00 15.63 Free Outfall UD,C1,C2,C0 405.50 16.58 Free Outfall UD,C1,C2,C0 406.00 17.50 Free Outfall UD,C1,C2,C0 wry wr wr S/N: Bentley Systems, Inc. or Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 a amo Type. . . . Pond Routing Summary Page 7.01 Name. . . . VAULT B OUT Tag: 2 Event: 2 yr wort File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 2 W. LEVEL POOL ROUTING SUMMARY HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\ too Inflow HYG file = NONE STORED - VAULT B IN 2 Outflow HYG file = NONE STORED - VAULT B OUT 2 Pond Node Data = VAULT B •r Pond Volume Data = VAULT B Pond Outlet Data = Outlet 2 No Infiltration oo INITIAL CONDITIONS Starting WS Elev = 392.00 ft rR Starting Volume = 0 cu.ft Starting Outflow = .00 cfs Starting Infiltr. = .00 cfs Starting Total Qout= .00 cfs Time Increment = 5.00 min oo INFLOW/OUTFLOW HYDROGRAPH SUMMARY NO Peak Inflow = 53.11 cfs at 715.00 min Peak Outflow = 3.05 cfs at 765.00 min Peak Elevation = 400.71 ft Peak Storage = 78295 cu.ft — MASS BALANCE (cu.ft) + Initial Vol = 0 + HYG Vol IN = 131838 •"' - Infiltration = 0 - HYG Vol OUT = 129158 - Retained Vol = 2680 — Unrouted Vol = - cu.ft (.000= of Inflow Volume) ow ow rrr S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 oo um Type. . . . Pond Routed HYG (total out) Page 7.02 Name. . . . VAULT B OUT Tag: 2 Event: 2 yr or File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 2 us POND ROUTED TOTAL OUTFLOW HYG. . . HYG file = w HYG ID = VAULT B OUT HYG Tag = 2 Peak Discharge = 3.05 cfs on Time to Peak = 765.00 min HYG Volume = 129158 cu.ft um HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. 155.00 I .00 .00 .00 .00 .00 180.00 I .00 .00 .00 .00 .00 205.00 I .00 .00 .00 .00 .00 230.00 I .00 .00 .00 .00 .00 255.00 I .00 .00 .00 .00 .00 280.00 I .00 .00 .00 .00 .00 305.00 .00 .00 .00 .00 .00 330.00 I .00 .00 .00 .00 .00 355.00 .00 .00 .00 .00 .00 r 380.00 .00 .00 .01 .02 .03 405.00 .04 .05 .06 .07 .08 430.00 .10 .11 .12 .13 .14 455.00 .15 .16 .17 .18 .19 "" 480.00 .20 .21 .22 .24 .24 505.00 .25 .26 .27 .28 .29 530.00 .29 .30 .31 .32 .34 555.00 I .35 .36 .37 .38 .39 - 580.00 .39 .40 .41 .42 .43 605.00 I .44 .45 .46 .47 .49 630.00 I .49 .50 .51 .51 .52 655.00 .53 .54 .55 .56 .57 um 680.00 I .58 .60 .61 .64 .68 705.00 .74 .84 1.69 2.47 2.80 730.00 I 2.90 2.95 2.99 3.02 3.03 755.00 3.04 3.05 3.05 3.05 3.05 NM 780.00 I 3.05 3.05 3.04 3.03 3.03 805.00 I 3.02 3.01 3.00 2.99 2.98 830.00 I 2.96 2.95 2.93 2.92 2.91 855.00 I 2.89 2.87 2.86 2.84 2.83 mu 880.00 I 2.81 2.80 2.78 2.76 2.74 905.00 I 2.73 2.71 2.69 2.67 2.66 r MP S/N: Bentley Systems, Inc. um Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 um sm Type. . . . Pond Routed HYG (total out) Page 7.03 Name. . . . VAULT B OUT Tag: 2 Event: 2 yr r File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Ma Storm. . . Typell 24hr Tag: 2 r HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min Time on left represents time for first value in each row. tom 930.00 2.64 2.62 2.60 2.58 2.56 955.00 2.54 2.52 2.50 2.48 2.46 980.00 I 2.44 2.42 2.40 2.38 2.36 +r. 1005.00 I 2.34 2.32 2.30 2.28 2.26 1030.00 I 2.24 2.22 2.20 2.18 2.16 1055.00 I 2.14 2.12 2.09 2.07 2.05 1080.00 I 2.02 2.00 1.98 1.96 1.93 ■,,, 1105.00 I 1.91 1.89 1.87 1.85 1.83 1130.00 I 1.80 1.77 1.74 1.70 1.67 1155.00 I 1.64 1.61 1.58 1.55 1.52 1180.00 I 1.49 1.46 1.44 1.41 1.38 m. 1205.00 I 1.36 1.33 1.31 1.29 1.27 1230.00 I 1.25 1.23 1.22 1.20 1.18 1255.00 I 1.17 1.15 1.14 1.12 1.11 1280.00 I 1.09 1.08 1.07 1.05 1.04 1305.00 I 1.03 1.02 1.00 .99 .98 ow 1330.00 .97 .96 .95 .94 .93 1355.00 I .92 .91 .90 .89 .88 1380.00 .87 .87 .87 .87 .87 1405.00 I .87 .87 .87 .86 .86 ,. 1430.00 .86 .86 .86 .86 .86 1455.00 .85 .85 .85 .84 .84 1480.00 .84 .84 .83 .83 .83 1505.00 I .83 .82 .82 .82 .82 04' 1530.00 I .81 .81 .81 .81 .80 1555.00 I .80 .80 .79 .79 .79 1580.00 I .79 .78 .78 .78 .78 1605.00 I .77 .77 .77 .77 .76 UM 1630.00 I .76 .76 .76 .75 .75 1655.00 I .75 .74 .74 .74 .74 1680.00 I .73 .73 .73 .73 .72 1705.00 I .72 .72 .72 .71 .71 leo 1730.00 .71 .71 .70 .70 .70 1755.00 I .69 .69 .69 .69 .68 1780.00 I .68 .68 .68 .67 .67 1805.00 I .67 .67 .66 .66 .66 r. 1830.00 .66 .65 .65 .65 .65 1855.00 I .64 .64 .64 .63 .63 1880.00 I .63 .63 .62 .62 .62 1905.00 .62 .61 .61 .61 .60 rr 1930.00 .60 .60 .60 .59 .59 1955.00 .59 .59 .58 .58 .58 1980.00 I .58 .57 .57 .57 .57 2005.00 I .56 .56 .56 .56 .55 u„ 2030.00 I .55 .55 .54 .54 .54 4.1w oft S/N: Bentley Systems, Inc. will Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 s ow Type. . . . Pond Routed HYG (total out) Page 7.04 Name. . . . VAULT B OUT Tag: 2 Event: 2 yr dr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 2 ENS HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. oo 2055.00 I .54 .53 .53 .53 .53 2080.00 I .52 .52 .52 .52 .51 2105.00 I .51 .51 .51 .50 .50 .. 2130.00 I .50 .50 .49 .49 .49 2155.00 I .49 .48 .48 .47 .47 2180.00 I .46 .45 .45 .44 .44 2205.00 I .43 .43 .42 .42 .41 ,.p 2230.00 .41 .41 .40 .40 .39 2255.00 I .39 .38 .38 .37 .36 2280.00 I .36 .35 .35 .34 .34 2305.00 I .33 .32 .32 .31 .31 ,r,,, 2330.00 I .30 .30 .29 .29 .29 2355.00 I .28 .28 .27 .27 .26 2380.00 I .26 .25 .25 .25 .24 2405.00 I .24 .23 .23 .22 .21 ow 2430.00 I .21 .20 .20 .19 .19 2455.00 I .18 .18 .17 .17 .16 2480.00 I .16 .15 .15 .15 .14 2505.00 I .14 .13 .13 .13 .12 2530.00 I .12 .12 .11 .11 .11 ow 2555.00 I .10 .10 .10 .10 .09 2580.00 I .09 .09 .09 .08 .08 2605.00 I .08 .08 .08 .07 .07 2630.00 .07 .07 .07 .06 .06 "' 2655.00 .06 .06 .06 .06 .05 2680.00 .05 .05 .05 .05 .05 2705.00 I .05 .05 .04 .04 .04 2730.00 .04 .04 .04 .04 .04 "`" 2755.00 .04 .03 .03 .03 .03 2780.00 .03 .03 .03 .03 .03 2805.00 I .03 .03 .03 .02 .02 2830.00 I .02 .02 .02 .02 .02 ow 2855.00 .02 .02 .02 .02 .02 2880.00 .02 .02 .02 .02 .02 2905.00 ( .02 .02 .01 .01 .01 2930.00 .01 .01 .01 .01 .01 - 2955.00 .01 .01 .01 .01 .01 2980.00 I .01 .01 .01 .01 .01 3005.00 .01 .01 .01 .01 .01 3030.00 .01 .01 .01 .01 .01 ow 3055.00 .01 .01 .01 .01 .01 3080.00 .01 .01 .01 .01 .01 3105.00 .01 .01 .00 .00 .00 3130.00 .00 .00 .00 .00 .00 ,w 3155.00 .00 .00 .00 .00 .00 Wil WA S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 ow Type. . . . Pond Routed HYG (total out) Page 7.05 Name. . . . VAULT B OUT Tag: 2 Event: 2 yr File. . . . H:\12\V122001\Technical\Engineer\SNM Design\Underground Vault Design\Post Develop we Storm. . . TypelI 24hr Tag: 2 am HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. - 3180.00 I .00 .00 .00 .00 .00 3205.00 I .00 .00 MO WM S IWO S OM S WO OM Oft w UM S S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 am es Type. . . . Pond Routing Summary Page 7.06 Name. . . . VAULT B OUT Tag: 10 Event: 10 yr rw File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typelf 24hr Tag: 10 .rr LEVEL POOL ROUTING SUMMARY HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\ .wry Inflow HYG file = NONE STORED - VAULT B IN 10 Outflow HYG file = NONE STORED - VAULT B OUT 10 Pond Node Data = VAULT B ms Pond Volume Data = VAULT B Pond Outlet Data = Outlet 2 No Infiltration MK INITIAL CONDITIONS Starting WS Elev = 392.00 ft ra Starting Volume = 0 cu.ft Starting Outflow = .00 cfs Starting Infiltr. = .00 cfs Starting Total Qout= .00 cfs mr Time Increment = 5.00 min INFLOW/OUTFLOW HYDROGRAPH SUMMARY M` Peak Inflow = 82.67 cfs at 715.00 min Peak Outflow = 14.36 cfs at 730.00 min Peak Elevation = 404.40 ft "" Peak Storage = 113602 cu.ft so MASS BALANCE (cu.ft) + Initial Vol = 0 + HYG Vol IN = 210851 ws - Infiltration = 0 - HYG Vol OUT = 208171 - Retained Vol = 2679 sr Unrouted Vol = 0 cu.ft (.000% of Inflow Volume) +.w MO Mk r S/N: Bentley Systems, Inc. �'► Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 ow Type. . . . Pond Routed HYG (total oat) Page 7.07 Name. . . . VAULT B OUT Tag: 10 Event: 10 yr .r File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 10 ow POND ROUTED TOTAL OUTFLOW HYG. . . HYG file = i° HYG ID = VAULT B OUT HYG Tag = 10 Peak Discharge = 14.36 cfs ++ Time to Peak = 730.00 min HYG Volume = 208171 cu.ft - HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. ow 105.00 I .00 .00 .00 .00 .00 130.00 I .00 .00 .00 .00 .00 155.00 I .00 .00 .00 .00 .00 180.00 I .00 .00 .00 .00 .00 205.00 I .00 .00 .00 .00 .00 ow 230.00 I .00 .00 .00 .00 .00 255.00 I .00 .00 .00 .00 .00 280.00 .00 .01 .02 .03 .05 305.00 I .06 .08 .09 .10 .12 ow 330.00 I .13 .14 .16 .17 .19 355.00 .20 .22 .23 .24 .25 380.00 I .26 .27 .28 .29 .30 405.00 .30 .31 .32 .33 .34 "` 430.00 .35 .36 .37 .38 .39 455.00 .40 .40 .41 .42 .43 480.00 .43 .44 .45 .46 .47 505.00 .48 .49 .49 .49 .50 ow 530.00 .50 .51 .52 .52 .53 555.00 ( .53 .54 .54 .55 .56 580.00 .56 .57 .58 .58 .59 605.00 I .60 .60 .61 .62 .63 ow 630.00 I .64 .65 .66 .67 .68 655.00 I .69 .71 .72 .73 .75 680.00 I .77 .78 .80 .83 .95 705.00 I 1.74 2.46 3.38 11.10 13.77 +r 730.00 I 14.36 13.99 13.48 13.11 12.69 755.00 12.23 11.68 11.15 10.55 9.76 780.00 I 9.04 8.37 7.76 7.20 6.71 805.00 I 6.26 5.87 5.56 5.28 5.02 r 830.00 I 4.77 4.54 4.33 4.12 3.97 855.00 I 3.89 3.81 3.74 3.66 3.59 ow ow r S/N: Bentley Systems, Inc. "" Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 oft will Type. . . . Pond Routed HYG (total out) Page 7.08 Name. . . . VAULT B OUT Tag: 10 Event: 10 yr mr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 10 elm HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. r. I 880.00 I 3.52 3.45 3.38 3.31 3.25 905.00 I 3.18 3.15 3.13 3.12 3.11 930.00 I 3.09 3.08 3.07 3.05 3.04 ✓e 955.00 I 3.02 3.01 2.99 2.97 2.96 980.00 I 2.94 2.92 2.91 2.89 2.88 1005.00 I 2.86 2.84 2.83 2.81 2.79 1030.00 I 2.78 2.76 2.74 2.72 2.71 - 1055.00 I 2.69 2.67 2.65 2.64 2.62 1080.00 I 2.60 2.58 2.57 2.55 2.53 1105.00 I 2.51 2.49 2.47 2.45 2.44 1130.00 I 2.42 2.40 2.38 2.36 2.34 we 1155.00 I 2.32 2.30 2.28 2.26 2.24 1180.00 2.22 2.20 2.18 2.17 2.15 1205.00 2.13 2.11 2.08 2.06 2.04 1230.00 I 2.02 2.00 1.97 1.95 1.93 re 1255.00 1.91 1.89 1.87 1.85 1.84 1280.00 1.82 1.79 1.76 1.73 1.70 1305.00 I 1.67 1.65 1.62 1.59 1.57 1330.00 I 1.54 1.52 1.50 1.48 1.45 1355.00 I 1.43 1.41 1.39 1.37 1.35 er 1380.00 I 1.33 1.32 1.30 1.28 1.27 1405.00 1.26 1.24 1.23 1.22 1.21 1430.00 1.20 1.18 1.17 1.16 1.13 1455.00 1.10 1.08 1.05 1.02 1.00 ` 1480.00 .98 .95 .93 .91 .88 1505.00 .87 .87 .87 .86 .86 1530.00 .86 .86 .85 .85 .85 1555.00 I .85 .84 .84 .84 .84 we 1580.00 I .83 .83 .83 .83 .82 1605.00 .82 .82 .82 .81 .81 1630.00 I .81 .80 .80 .80 .80 1655.00 .79 .79 .79 .79 .78 "0 1680.00 I .78 .78 .78 .77 .77 1705.00 .77 .77 .76 .76 .76 1730.00 .75 .75 .75 .75 .74 1755.00 .74 .74 .74 .73 .73 .r 1780.00 .73 .73 .72 .72 .72 1805.00 I .72 .71 .71 .71 .71 1830.00 I .70 .70 .70 .69 .69 1855.00 .69 .69 .68 .68 .68 re 1880.00 I .68 .67 .67 .67 .67 1905.00 I .66 .66 .66 .65 .65 1930.00 I .65 .65 .64 .64 .64 1955.00 I .64 .63 .63 .63 .63 1980.00 I .62 .62 .62 .61 .61 sige N MI OW S/N: Bentley Systems, Inc. "' Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 ee mm Type. . . . Pond Routed HYG (total out) Page 7.09 Name. . . . VAULT B OUT Tag: 10 Event: 10 yr mm File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 10 r" HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. mm 2005.00 I .61 .61 .60 .60 .60 2030.00 I .60 .59 .59 .59 .59 2055.00 I .58 .58 .58 .58 .57 mm 2080.00 I .57 .57 .57 .56 .56 2105.00 I .56 .55 .55 .55 .55 2130.00 I .54 .54 .54 .54 .53 2155.00 .53 .53 .53 .52 .52 -, 2180.00 I .52 .51 .51 .51 .51 2205.00 I .50 .50 .50 .50 .49 2230.00 .49 .49 .49 .49 .48 2255.00 .47 .47 .46 .46 .45 air 2280.00 I .45 .44 .44 .43 .43 2305.00 I .42 .42 .41 .41 .40 2330.00 .40 .39 .39 .39 .38 2355.00 .37 .37 .36 .36 .35 mm 2380.00 I .35 .34 .33 .33 .32 2405.00 I .32 .31 .31 .30 .30 2430.00 I .29 .29 .28 .28 .28 2455.00 .27 .27 .26 .26 .25 2480.00 I .25 .25 .24 .24 .23 mm 2505.00 I .22 .22 .21 .21 .20 2530.00 I .19 .19 .18 .18 .17 2555.00 I .17 .17 .16 .16 .15 2580.00 I .15 .14 .14 .14 .13 " 2605.00 I .13 .13 .12 .12 .12 2630.00 I .11 .11 .11 .10 .10 2655.00 I .10 .10 .09 .09 .09 2680.00 I .09 .08 .08 .08 .08 m"' 2705.00 I .08 .07 .07 .07 .07 2730.00 I .07 .06 .06 .06 .06 2755.00 I .06 .06 .05 .05 .05 2780.00 I .05 .05 .05 .05 .04 "0 2805.00 I .04 .04 .04 .04 .04 2830.00 I .04 .04 .04 .04 .03 2855.00 I .03 .03 .03 .03 .03 2880.00 I .03 .03 .03 .03 .03 .r 2905.00 I .03 .02 .02 .02 .02 2930.00 I .02 .02 .02 .02 .02 2955.00 I .02 .02 .02 .02 .02 2980.00 .02 .02 .02 .02 .02 ,.. 3005.00 I .01 .01 .01 .01 .01 3030.00 .01 .01 .01 .01 .01 3055.00 .01 .01 .01 .01 .01 3080.00 I .01 .01 .01 .01 .01 ..r 3105.00 I .01 .01 .01 .01 .01 mm mm S/N: Bentley Systems, Inc. '" Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 mm NW Type. . . . Pond Routed HYG (total out) Page 7.10 Name. . . . VAULT B OUT Tag: 10 Event: 10 yr .r File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 10 rr HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. - I 3130.00 I .01 .01 .01 .01 .01 3155.00 .01 .01 .01 .01 .01 3180.00 .01 .01 .01 .01 .01 or 3205.00 .00 .00 .00 .00 .00 3230.00 .00 .00 .00 .00 .00 3255.00 .00 .00 .00 .00 .00 3280.00 .00 .00 .00 .00 .00 rs rr rr WO WO Mb Mb S/N: Bentley Systems, Inc. ON Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 o w Appendix A A-1 Index of Starting Page Numbers for ID Names mu or A AREA TO VAULT B. . . 2.01, 3.01 ■r B BYPASS AREA-B. . . 2.03, 3.02 0 re Outlet 2. . . 6.01, 6.06 P POI - B. . . 4.01, 4.05 ar V VAULT B. . . 5.01, 7.01, 7.02, 7.06, 7.07 rr N Watershed. . . 1.01 air or rr r■ mm rm r mm mm mm S/N: Bentley Systems, Inc. +aaa Bentley PondPack (10.00.027.00) 12:38 AM 10/23/2014 irt r iks t irk ir kr kr ir kr L fire' lie its .1.- imp lir i- ts. , i its .. .. .. VAULT "C" .. DESIGN DATA .. .. .. Area to Vault C • />L Vault C 0 1:4*? . ..•• Addlink 20 Bypass Area - C Out 10 UV VAULT C- OVERALL DESIGN INFORMATION System C Design Information ""' Invert Information I Elevation Volume Table Bottom of System 397.00 Stage Elevation Total Volume Stone Invert below Pipe 397.00 0.00 397.00 0 r. Stone Depth below Pipe 2 ft 0.50 397.50 2,880 Pipe Invert 399.00 1.00 398.00 5,760 Pipe Diameter 144 in = 12 ft 1.50 398.50 8,640 r. Pipe Radius 72 in = 6 ft 2.00 399.00 11,520 Pipe Area 113.10 sf 2.50 399.50 17,114 Stone Invert above Pipe 411.00 3.00 400.00 22,709 ISO Stone Depth above Pipe 2 3.50 400.50 28,303 Top of System 413.00 4.00 401.00 33,897 Height of System 16 ft 4.50 401.50 39,492 MO Spacing between Barrels 3 ft 5.00 402.00 45,086 Stone width around system 2 ft 5.50 402.50 50,680 so Stone Porosity 40.00% 6.00 403.00 56,275 << BMP System Layout Information 6.50 403.50 61,869 Number of Barrels 7 7.00 404.00 67,463 owl Number of Headers 2 7.50 404.50 73,058 Length per Barrel 108 ft 8.00 405.00 78,652 Length per Header 102 ft 8.50 405.50 84,246 '■' Rectangular Footprint 106 ft x 136 ft 9.00 406.00 89,841 Storage Information 9.50 406.50 95,435 Storage Volume Required 155,000 cf 10.00 407.00 101,029 .. Pipe Storage Provided 108,573 cf 10.50 407.50 106,624 Stone Storage Provided 48,731 cf 11.00 408.00 112,218 Total Storage Provided 157,304 cf 11.50 408.50 117,812 rr Stone Storage 12.00 409.00 123,407 Total Storage Provided 48,833 cf 12.50 409.50 129,001 ON Storage Below Pipes 11,533 cf 13.00 410.00 134,595 Storage along Sides of Pipes 25,767 cf 13.50 410.50 140,190 Storage Above Pipes _ 11,533 cf 14.00 411.00 145,784 to 14.50 411.50 148,664 Required 15.00 412.00 151,544 BMP Volume: 52,272 cf 15.50 412.50 154,424 so 16.00 413.00 157,304 so so II MP Orifice Sizing_' Calculations 5th Street Station - Vault C Total Drainage Area = 16.53 ac. Impervious Area = 14.4 ac. Water Quality Volume WQV required = 2 x (0.5 in / 12) x (Imp Area x 43,560) = 52272 cf. Line BMP Storage Provided (from pond volume table) (a) 56275 cf. Max. Head (h) at the required BMP storage from the elevation-storage curve for the facilty. (b) 5.5 ft Peak outflow rate (Qp) at the max. head for a drawdown time of 30 hrs. [Qp = S/(0.5 x 3600 x 30)] 0.0000185185 x Line (a) = (c) 1.04 r. Required orifice area (A) [A = Qp / (0.6 x (64.4 x h))^0.5)] Line (c) / [0.6 x (64.4 x Line (b))^0.5] = (d) 0.09 Diameter of the circular orifice. 2.0 x (Line (d) / 3.1415927)1'0.5 = (e) 0.34 ft 4.11 in (2" Min.) w N. VAULT "C" . 1' OUTING COMPUTATIONS N. N. rr Table of Contents i om Table of Contents 00 ********************** MASTER SUMMARY ********************** Watershed Master Network Summary 1.01 oft ********************** TC CALCULATIONS ********************* 4141 PRE-DEV C Tc Calcs 2.01 ********************** CN CALCULATIONS ********************* 4141 PRE-DEV C Runoff CN-Area 3.01 am ******************** RUNOFF HYDROGRAPHS ******************** 4141 PRE-DEV C Pre 2 Unit Hyd. Summary 4.01 Unit Hyd. (HYG output) 4.02 'M PRE-DEV C Pre 10 Unit Hyd. (HYG output) 4.04 Unit Hyd. Coordinates 4.06 4110 00 4141 OP rw PO S/N: Bentley Systems, Inc. r Bentley PondPack (10.00.027.00) 7:37 PM 10/22/2014 NW Type. . . . Master Network Summary Page 1.01 Name. . . . Watershed File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm NO Oft MASTER DESIGN STORM SUMMARY Network Storm Collection: Albemarle County wr Total Depth Rainfall Return Event in Type RNF ID Pre 2 3.7000 Synthetic Curve Typell 24hr Pre 10 5.6000 Synthetic Curve Typell 24hr err MASTER NETWORK SUMMARY SCS Unit Hydrograph Method (*Node=Outfall; +Node=Diversion;) wir (Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt) Max Return HYG Vol Qpeak Qpeak Max WSEL Pond Storage Node ID Type Event cu.ft Trun min cfs ft cu.ft mo *OUTFALL C JCT 2 70179 725.00 18.57 *OUTFALL C JCT 10 147179 725.00 40.83 PRE-DEV C AREA 2 70179 725.00 18.57 PRE-DEV C AREA 10 147179 725.00 40.83 awl rr rr aw S/N: Bentley Systems, Inc. ma Bentley PondPack (10.00.027.00) 7:37 PM 10/22/2014 wr NMI Type. . . . Tc Calcs Page 2.01 Name. . . . PRE-DEV C NW File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm ON TIME OF CONCENTRATION CALCULATOR ma mob Segment #1: Tc: TR-55 Sheet Mannings n .4000 ma Hydraulic Length 150.00 ft 2yr, 24hr P 3.7000 in Slope .070000 ft/ft me Avg.Velocity .15 ft/sec Segment #1 Time: 16.74 min air Segment #2: Tc: TR-55 Shallow Hydraulic Length 739.00 ft Slope .117050 ft/ft rrr Unpaved Avg.Velocity 5.52 ft/sec Segment #2 Time: 2.23 min Segment #3: Tc: TR-55 Channel r Flow Area 320.0000 sq.ft Wetted Perimeter 41.00 ft Hydraulic Radius 7.80 ft as Slope .002000 ft/ft Mannings n .0350 Hydraulic Length 1166.00 ft Avg.Velocity 7.49 ft/sec Segment #3 Time: 2.59 min aar Total Tc: 21.56 min aw +ar S/N: Bentley Systems, Inc. rim Bentley PondPack (10.00.027.00) 7:37 PM 10/22/2014 ems Type. . . . Tc Calcs Page 2.02 Name. . . . PRE-DEV C ow File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm Tc Equations used. . . ___= SCS TR-55 Sheet Flow rn Tc = (.007 * ( (n * Lf) **0.8) ) / ( (P**.5) * (Sf**.4) ) Where: Tc = Time of concentration, hrs n = Mannings n us Lf = Flow length, ft P = 2yr, 24hr Rain depth, inches Sf = Slope, o ma SCS TR-55 Shallow Concentrated Flow Unpaved surface: r V = 16.1345 * (Sf**0.5) Paved surface: V = 20.3282 * (Sf**0.5) ma Tc = (Lf / V) / (3600sec/hr) Where: V = Velocity, ft/sec Sf = Slope, ft/ft ow Tc = Time of concentration, hrs Lf = Flow length, ft Or OW rO 00 00 OM r S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 7:37 PM 10/22/2014 Oa mm Type. . . . Tc Calcs Page 2.03 Name. . . . PRE-DEV C mm File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm ow ___= SCS Channel Flow R = Aq / Wp V = (1.49 * (R** (2/3) ) * (Sf**-0.5) ) / n Tc = (Lf / V) / (3600sec/hr) r Where: R = Hydraulic radius Aq = Flow area, sq.ft. Wp = Wetted perimeter, ft V = Velocity, ft/sec moot Sf = Slope, ft/ft n = Mannings n Tc = Time of concentration, hrs Lf = Flow length, ft AIM rr WM WM rr S/N: Bentley Systems, Inc. "" Bentley PondPack (10.00.027.00) 7:37 PM 10/22/2014 a ums Type. . . . Runoff CN-Area Page 3.01 Name. . . . PRE-DEV C mu File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm um RUNOFF CURVE NUMBER DATA Impervious MIS Area Adjustment Adjusted Soil/Surface Description CN acres =6C SUC CN Woods - good (B Soils) 55 2.300 55.00 uu Woods - good (C Soils) 70 2.180 70.00 Woods - good (D Soils) 77 10.210 77.00 COMPOSITE AREA & WEIGHTED CN ---> 14.690 72.52 (73) mu up um mu eft mu or go um gem S/N: Bentley Systems, Inc. Bentley PondPacl, (10.00.027.00) 7:37 PM 10/22/2014 almL min Type. . . . Unit Hyd. Summary Page 4.01 Name. . . . PRE-DEV C Tag: Pre 2 Event: 2 yr .r File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm Storm. . . Typell 24hr Tag: Pre 2 dim SCS UNIT HYDROGRAPH METHOD STORM EVENT: 2 year storm r Duration = 1440.00 min Rain Depth = 3.7000 in Rain Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vaul Rain File -ID = - Typell 24hr Unit Hyd Type = Default Curvilinear ma HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vaul HYG File - ID = - PRE-DEV C Pre 2 Tc = 21.56 min Drainage Area = 14.690 acres Runoff CN= 73 MO Computational Time Increment = 2.875 min Computed Peak Time = 727.31 min ar` Computed Peak Flow = 19.13 cfs Time Increment for HYG File = 5.00 min Peak Time, Interpolated Output = 725.00 min rr Peak Flow, Interpolated Output = 18.57 cfs WARNING: The difference between calculated peak flow and interpolated peak flow is greater than 1.50% DRAINAGE AREA ID:PRE-DEV C CN = 73 Area = 14.690 acres S = 3.6986 in 0.2S = .7397 in or Cumulative Runoff 1.3160 in 70176 cu.ft WO HYG Volume. . . 70179 cu.ft (area under HYG curve) ***** SCS UNIT HYDROGRAPH PARAMETERS ***** Time Concentration, Tc = 21.561 min (ID: PRE-DEV C) Computational Incr, Tm = 2.875 min = 0.20000 Tp ■r Unit Hyd. Shape Factor = 483.432 (37.46% under rising limb) K = 483.43/645.333, K = .7491 (also, K = 2/(1+(Tr/Tp) ) Receding/Rising, Tr/Tp = 1.6698 (solved from K = .7491) Unit peak, qp = 46.32 cfs Unit peak time Tp = 14.374 min Unit receding limb, Tr = 57.495 min Total unit time, Tb = 71.869 min ma r S/N: Bentley Systems, Inc. .r Bentley PondPack (10.00.027.00) 7:37 PM 10/22/2014 rr ma Type. . . . Unit Hyd. (HYG output) Page 4.02 Name. . . . PRE-DEV C Tag: Pre 2 Event: 2 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm rr Storm. . . Typell 24hr Tag: Pre 2 UN SCS UNIT HYDROGRAPH METHOD STORM EVENT: 2 year storm A. Duration = 1440.00 min Rain Depth = 3.7000 in Rain Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vaul Rain File -ID = - Typell 24hr Unit Hyd Type = Default Curvilinear ,.f HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vaul HYG File - ID = - PRE-DEV C Pre 2 Tc = 21.56 min Drainage Area = 14.690 acres Runoff CN= 73 Calc.Increment= 2.875 min Out.Incr.= 5.00 min AA HYG Volume = 70179 cu.ft HYDROGRAPH ORDINATES (cfs) ma Time Output Time increment = 5.00 min min I Time on left represents time for first value in each row. 630.00 I .00 .00 .01 .03 .05 655.00 I .08 .12 .16 .20 .26 .rr 680.00 I .34 .42 .53 .70 1.13 705.00 I 2.15 4.27 8.55 14.39 18.57 730.00 I 18.21 14.43 10.57 7.88 6.18 755.00 I 4.99 4.13 3.50 3.08 2.78 "'t 780.00 I 2.54 2.35 2.21 2.09 1.99 805.00 I 1.90 1.82 1.75 1.68 1.61 830.00 I 1.55 1.49 1.44 1.39 1.34 855.00 I 1.30 1.27 1.24 1.22 1.20 - 880.00 I 1.18 1.16 1.14 1.12 1.11 905.00 I 1.09 1.07 1.05 1.03 1.01 930.00 I .99 .98 .96 .94 .92 955.00 I .90 .88 .86 .84 .83 +A 980.00 I .82 .81 .80 .79 .79 1005.00 .78 .77 .77 .76 .75 1030.00 .75 .74 .73 .73 .72 1055.00 .71 .70 .70 .69 .68 +•r 1080.00 I .68 .67 .66 .66 .65 1105.00 .64 .64 .63 .62 .61 1130.00 I .61 .60 .59 .59 .58 1155.00 .57 .56 .56 .55 .54 r.■ 1180.00 I .54 .53 .52 .51 .51 1205.00 I .50 .49 .49 .48 .48 1230.00 I .48 .48 .47 .47 .47 1255.00 I .47 .47 .47 .47 .47 VIM 1280.00 I .46 .46 .46 .46 .46 1305.00 I .46 .46 .46 .45 .45 1330.00 I .45 .45 .45 .45 .45 1355.00 I .44 .44 .44 .44 .44 ,ter all rr S/N: Bentley Systems, Inc. MN Bentley PondPack (10.00.027.00) 7:37 PM 10/22/2014 r. rr Type. . . . Unit Hyd. (HYG output) Page 4.03 Name. . . . PRE-DEV C Tag: Pre 2 Event: 2 yr ma File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm Storm. . . Typell 24hr Tag: Pre 2 rr HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. rr I 1380.00 I .44 .44 .44 .43 .43 1405.00 I .43 .43 .43 .43 .43 1430.00 I .42 .42 .42 .40 .32 les 1455.00 I .22 .13 .07 .04 .02 1480.00 .01 .01 .00 .00 .00 IIr rr rr rr irr irr WO Oft OM MO MO rr S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 7:37 PM 10/22/2014 "Mt ®r Type. . . . Unit Hyd. (HYG output) Page 4.04 Name. . . . PRE-DEV C Tag: Pre 10 Event: 10 yr ee File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm Storm. . . Typell 24hr Tag: Pre 10 OW SCS UNIT HYDROGRAPH METHOD STORM EVENT: 10 year storm r• Duration = 1440.00 min Rain Depth = 5.6000 in Rain Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vaul Rain File -ID = - Typell 24hr Unit Hyd Type = Default Curvilinear me HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vaul HYG File - ID = - PRE-DEV C Pre 10 Tc = 21.56 min Drainage Area = 14.690 acres Runoff CN= 73 SW Calc.Increment= 2.875 min Out.Incr.= 5.00 min HYG Volume = 147179 cu.ft HYDROGRAPH ORDINATES (cfs) or Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. 515.00 I .00 .00 .01 .02 .03 me 540.00 I .05 .07 .09 .11 .13 565.00 I .15 .17 .19 .21 .23 590.00 I .26 .29 .32 .35 .39 615.00 I .43 .48 .53 .59 .65 640.00 I .72 .80 .88 .98 1.09 Mel 665.00 I 1.21 1.35 1.52 1.73 1.97 690.00 2.25 2.72 3.95 6.70 11.93 715.00 I 21.40 33.27 40.83 38.78 30.12 740.00 21.73 15.97 12.35 9.86 8.07 ilillil 765.00 I 6.79 5.92 5.31 4.84 4.47 790.00 ( 4.18 3.95 3.75 3.58 3.43 815.00 3.28 3.14 3.02 2.90 2.79 840.00 I 2.68 2.58 2.49 2.41 2.35 we 865.00 I 2.30 2.26 2.22 2.18 2.15 890.00 I 2.11 2.07 2.04 2.01 1.97 915.00 I 1.93 1.90 1.86 1.83 1.79 940.00 I 1.76 1.72 1.69 1.65 1.61 - 965.00 I 1.58 1.54 1.52 1.49 1.48 990.00 I 1.46 1.45 1.43 1.42 1.41 1015.00 I 1.39 1.38 1.37 1.36 1.34 1040.00 I 1.33 1.32 1.30 1.29 1.28 um 1065.00 1.27 1.25 1.24 1.23 1.21 1090.00 1.20 1.19 1.18 1.16 1.15 1115.00 I 1.14 1.12 1.11 1.10 1.08 1140.00 1.07 1.06 1.04 1.03 1.02 or 1165.00 I 1.00 .99 .98 .96 .95 1190.00 .94 .92 .91 .90 .88 1215.00 I .88 .87 .86 .86 .86 1240.00 .85 .85 .85 .85 .84 rw um on S/N: Bentley Systems, Inc. 4111• Bentley PondPack (10.00.027.00) 7:37 PM 10/22/2014 um frr Type. . . . Unit Hyd. (HYG output) Page 4.05 Name. . . . PRE-DEV C Tag: Pre 10 Event: 10 yr or File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm Storm. . . Typell 24hr Tag: Pre 10 or HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min Time on left represents time for first value in each row. or 1265.00 I .84 .84 .84 .83 .83 1290.00 I .83 .83 .82 .82 .82 1315.00 I .81 .81 .81 .81 .80 +r 1340.00 I .80 .80 .80 .79 .79 1365.00 I .79 .79 .78 .78 .78 1390.00 I .78 .77 .77 .77 .77 1415.00 I .76 .76 .76 .76 .75 or 1440.00 I .75 .71 .58 .39 .22 1465.00 I .13 .07 .04 .02 .01 1490.00 I .01 .00 .00 .00 or or NM UPI MN MO MS ar NW WO WO S/N: Bentley Systems, Inc. or Bentley PondPack (10.00.027.00) 7:37 PM 10/22/2014 or mr Type. . . . Unit Hyd. Coordinates Page 4.06 Name. . . . PRE-DEV C Tag: Pre 10 File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm ow or ***** SCS UNIT HYDROGRAPH METHOD ***** (Unit Hydrograph Coordinates) ow Unit Hyd Type = Default Curvilinear Shape factor= 483.432 Area = 14.690 acres qp = 46.32 cfs Tc = 21.56 min Tp = 14.37 min Tr = 57.50 min Tb = 71.87 min or COMPUTATIONAL TIME INCREMENT = 2.87 min Time Ratios Time Mass Curve Ratio Discharge Ratio Discharge .r (t/Tp) min (Qa/Q) (q/qp) cfs .000 .000 .0000 .0000 .000 .200 2.875 .0060 .1000 4.632 aw .400 5.750 .0356 .3100 14.359 .600 8.624 .1071 .6600 30.570 .800 11.499 .2281 .9300 43.077 1.000 14.374 .3746 1.0000 46.319 1.200 17.249 .5210 .9300 43.077 orm 1.400 20.123 .6495 .7800 36.129 1.600 22.998 .7506 .5600 25.939 1.800 25.873 .8207 .3900 18.064 wr 2.000 28.748 .8705 .2800 12.969 2.200 31.622 .9068 .2070 9.588 2.400 34.497 .9331 .1470 6.809 2.600 37.372 .9520 .1070 4.956 2.800 40.247 .9657 .0770 3.567 '" 3.000 43.121 .9756 .0550 2.548 3.200 45.996 .9827 .0400 1.853 3.400 48.871 .9878 .0290 1.343 3.600 51.746 .9916 .0210 .973 "r 3.800 54.620 .9943 .0150 .695 4.000 57.495 .9962 .0110 .510 4.200 60.370 .9976 .0080 .371 4.400 63.245 .9987 .0060 .278 um 4.600 66.119 .9994 .0040 .185 4.800 68.994 .9999 .0020 .093 5.000 71.869 1.0000 .0000 .000 w. ,rg r■ um we S/N: Bentley Systems, Inc. 9m Bentley PondPack (10.00.027.00) 7:37 PM 10/22/2014 rr UN Type. . . . Unit Hyd. Coordinates Page 4.07 Name. . . . PRE-DEV C Tag: Pre 10 r File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Pre Developm ow ***** UNIT HYDROGRAPH METHOD ***** (Adjusted Unit Hydrograph Coordinates) ow Drainage Area = 14.690 acres Unit hydrograph volume for 1.00000 in runoff = 14.812 cfs-hours Integrated volume for computed ordinates = 14.800 cfs-hours w Adjustment Ratio = 14.812/14.800 = 1.00082 Time Original Q Adjusted Q ow min cfs cfs .00 .00 .00 2.87 4.63 4.64 5.75 14.36 14.37 ow 8.62 30.57 30.60 11.50 43.08 43.11 14.37 46.32 46.36 r 17.25 43.08 43.11 20.12 36.13 36.16 23.00 25.94 25.96 25.87 18.06 18.08 28.75 12.97 12.98 ow 31.62 9.59 9.60 34.50 6.81 6.81 37.37 4.96 4.96 40.25 3.57 3.57 o" 43.12 2.55 2.55 46.00 1.85 1.85 48.87 1.34 1.34 51.75 .97 .97 "' 54.62 .69 .70 57.50 .51 .51 60.37 .37 .37 63.24 .28 .28 ow 66.12 .19 .19 68.99 .09 .09 71.87 .00 .00 ow ow ow ow ..n S/N: Bentley Systems, Inc. 'w Bentley PondPack (10.00.027.00) 7:37 PM 10/22/2014 r Appendix A A-1 Index of Starting Page Numbers for ID Names ow P PRE-DEV C. . . 2.01, 3.01, 4.01, 4.02, 4.04, 4.06 ar W Watershed. . . 1.01 arr OM INNarr rrr rar w awr w *WI aur. wr S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 7:37 PM 10/22/2014 aaw or Table of Contents i Table of Contents as ********************** MASTER SUMMARY ********************** Watershed Master Network Summary 1.01 ew ********************** TC CALCULATIONS ********************* rr AREA TO VAULT C Tc Calcs 2.01 BYPASS AREA - C Tc Calcs 2.03 r ********************** CN CALCULATIONS ********************* um AREA TO VAULT C Runoff CN-Area 3.01 BYPASS AREA - C Runoff CN-Area 3.02 we *********************** HYG ADDITION *********************** rr OUT 10 Node: Addition Summary 4.01 Node: Addition Summary 4.06 up *********************** POND VOLUMES *********************** VAULT C Vol: Elev-Volume 5.01 mw ******************** OUTLET STRUCTURES ********************* Outlet 2 Outlet Input Data 6.01 +rr rw rr S/N: Bentley Systems, Inc. '�" Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 ma mu Table of Contents ii um "" Table of Contents (continued) Composite Rating Curve 6.06 am *********************** POND ROUTING *********************** ®m VAULT C OUT 2 Pond Routing Summary 7.01 Pond Routed HYG (total out) 7.02 VAULT C OUT 10 Pond Routing Summary 7.06 Pond Routed HYG (total out) 7.07 a VIM M S/N: Bentley Systems, Inc. mu Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 a oo Type. . . . Master Network Summary Page 1.01 Name. . . . Watershed ow File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop are MASTER DESIGN STORM SUMMARY mos Network Storm Collection: Albemarle County r Total Depth Rainfall Return Event in Type RNF ID mo 2 3.7000 Synthetic Curve Typell 24hr 10 5.6000 Synthetic Curve Typell 24hr ow MASTER NETWORK SUMMARY SCS Unit Hydrograph Method tir (*Node=Outfall; +Node=Diversion;) (Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt) um Max Return HYG Vol Qpeak Qpeak Max WSEL Pond Storage Node ID Type Event cu.ft Trun min cfs ft cu.ft oo AREA TO VAULT C AREA 2 187870 715.00 75.68 AREA TO VAULT C AREA 10 300462 715.00 117.80 BYPASS AREA - C AREA 2 15334 715.00 6.53 oo BYPASS AREA - C AREA 10 30811 715.00 13.33 *OUT 10 JCT 2 200288 720.00 13.33 *OUT 10 JCT 10 328359 720.00 38.44 MO VAULT C IN POND 2 187870 715.00 75.68 VAULT C IN POND 10 300462 715.00 117.80 rrr VAULT C OUT POND 2 184954 735.00 9.24 407.19 103197 VAULT C OUT POND 10 297547 725.00 31.82 412.06 151907 IMO MP OM MO S/N: Bentley Systems, Inc. mo Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 oo am Type. . . . Tc Calcs Page 2.01 Name. . . . AREA TO VAULT C r File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop r TIME OF CONCENTRATION CALCULATOR wr ®rM Segment #1: Tc: User Defined Segment #1 Time: 5.00 min win Total Tc: 5.00 min wi Calculated Tc < Min.Tc: Use Minimum To. . . Use Tc = 5.00 min MM• IMO wr wr ur �wr arm +r+ frr S/N: Bentley Systems, Inc. MIN Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 OW Type. . . . Tc Calcs Page 2.02 Name. . . . AREA TO VAULT C err File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop w Tc Equations used. . . oo ___= User Defined arr Tc = Value entered by user Where: Tc = Time of concentration ow wr +rr wr air ar. rr rr rr S/N: Bentley Systems, Inc. NW Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 ows Type. . . . Tc Calcs Page 2.03 Name. . . . BYPASS AREA - C ow File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop a. TIME OF CONCENTRATION CALCULATOR ar Segment #1: Tc: TR-55 Channel Flow Area 320.0000 sq.ft ow Wetted Perimeter 42.00 ft Hydraulic Radius 7.62 ft Slope .002000 ft/ft Mannings n .0350 roo Hydraulic Length 1243.00 ft Avg.Velocity 7.37 ft/sec Segment #1 Time: 2.81 min Total Tc: 2.81 min ow Calculated Tc < Min.Tc: Use Minimum To. . . Use Tc = 5.00 min look IMO r�r wM NMI S/N: Bentley Systems, Inc. '"w Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 oo or Type. . . . Tc Calcs Page 2.04 Name. . . . BYPASS AREA - C rr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop wr Tc Equations used. . . tor ___= SCS Channel Flow for R = Aq / Wp V = (1.49 * (R**(2/3) ) * (Sf**-0.5) ) / n Tc = (Lf / V) / (3600sec/hr) Where: R = Hydraulic radius Aq = Flow area, sq.ft. Wp = Wetted perimeter, ft o„ V = Velocity, ft/sec Sf = Slope, ft/ft n = Mannings n Tc = Time of concentration, hrs rw� Lf = Flow length, ft wr rr +r. wr mw min WO S/N: Bentley Systems, Inc. 'f'" Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 rwe mm Type. . . . Runoff CN-Area Page 3.01 Name. . . . AREA TO VAULT C mm File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Am RUNOFF CURVE NUMBER DATA mm Impervious Area Adjustment Adjusted Soil/Surface Description CN acres %C %UC CN Urban Districts - Commercial & Busi 94 7.500 94.00 Am Urban Districts - Commercial & Busi 95 7.630 95.00 Impervious Areas - Paved parking to 98 1.400 98.00 mm COMPOSITE AREA & WEIGHTED CN ---> 16.530 94.80 (95) MO, MO MO WM Mft MO WO WO MW S/N: Bentley Systems, Inc. mm Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 MM imot Type. . . . Runoff CN-Area Page 3.02 Name. . . . BYPASS AREA - C OP File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop RUNOFF CURVE NUMBER DATA UK Impervious or Area Adjustment Adjusted Soil/Surface Description CN acres %C %UC CN Open space (Lawns,parks etc.) - Goo 74 1.820 74.00 air Open space (Lawns,parks etc.) - Goo 80 .980 80.00 COMPOSITE AREA & WEIGHTED CN ---> 2.800 76.10 (76) or um op Ism my* aft S/N: Bentley Systems, Inc. tom Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 mm Type. . . . Node: Addition Summary Page 4.01 Name. . . . OUT 10 Event: 2 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 2 w SUMMARY FOR HYDROGRAPH ADDITION at Node: OUT 10 MIIt HYG Directory: H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\ Upstream Link ID Upstream Node ID HYG file HYG ID HYG tag rr ADDLINK 20 BYPASS AREA - C BYPASS AREA - C 2 OUTFALL C VAULT C IN OUTFALL C 2 +r. INFLOWS TO: OUT 10 Volume Peak Time Peak Flow ,a. HYG file HYG ID HYG tag cu.ft min cfs BYPASS AREA - C 2 15334 715.00 6.53 OUTFALL C 2 184954 735.00 9.24 ap TOTAL FLOW INTO: OUT 10 Volume Peak Time Peak Flow or HYG file HYG ID HYG tag cu.ft min cfs OUT 10 2 200288 720.00 13.33 w .r r .w0 00 S/N: Bentley Systems, Inc. WOO Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 00 M Type. . . . Node: Addition Summary Page 4.02 Name. . . . OUT 10 Event: 2 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop est Storm. . . Typell 24hr Tag: 2 es TOTAL NODE INFLOW. . . HYG file = ma HYG ID = OUT 10 HYG Tag = 2 Peak Discharge = 13.33 cfs +r. Time to Peak = 720.00 min HYG Volume = 200288 cu.ft gor HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. I r 355.00 I .00 .00 .02 .03 .04 380.00 I .05 .07 .08 .09 .11 405.00 I .12 .13 .14 .16 .17 430.00 I .18 .20 .21 .22 .23 455.00 I .25 .25 .26 .27 .28 W. 480.00 I .28 .29 .30 .31 .32 505.00 .33 .34 .35 .36 .37 530.00 I .39 .40 .41 .42 .43 555.00 I .44 .45 .46 .47 .48 r` 580.00 I .49 .49 .50 .51 .52 605.00 I .53 .54 .55 .56 .57 630.00 I .59 .60 .62 .64 .66 655.00 I .68 .70 .73 .76 .80 "' 680.00 I .84 .89 .94 1.22 1.82 705.00 I 2.77 4.41 10.96 13.33 11.00 730.00 I 10.36 10.26 10.14 9.94 9.64 755.00 I 9.32 9.16 9.01 8.86 8.70 elw 780.00 I 8.54 8.36 8.19 8.02 7.86 805.00 I 7.68 7.50 7.32 7.15 6.97 830.00 I 6.78 6.60 6.42 6.24 6.05 855.00 I 5.84 5.64 5.46 5.27 5.10 elio 880.00 I 4.87 4.63 4.41 4.20 4.01 905.00 I 3.84 3.67 3.52 3.37 3.25 930.00 I 3.14 3.03 2.93 2.83 2.74 955.00 I 2.65 2.57 2.49 2.41 2.34 am 980.00 I 2.28 2.22 2.16 2.11 2.06 1005.00 I 2.01 1.96 1.92 1.88 1.84 1030.00 i 1.80 1.77 1.75 1.74 1.72 1055.00 I 1.71 1.69 1.68 1.66 1.64 m. 1080.00 I 1.63 1.61 1.60 1.58 1.57 1105.00 1.55 1.54 1.52 1.51 1.49 me rr r S/N: Bentley Systems, Inc. - Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 eft MK Type. . . . Node: Addition Summary Page 4.03 Name. . . . OUT 10 Event: 2 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop um Storm. . . Typell 24hr Tag: 2 r HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min Time on left represents time for first value in each row. am 1130.00 I 1.48 1.47 1.45 1.44 1.42 1155.00 I 1.41 1.39 1.38 1.36 1.35 1180.00 I 1.33 1.32 1.30 1.29 1.27 rr 1205.00 I 1.26 1.25 1.23 1.22 1.21 1230.00 I 1.20 1.19 1.18 1.16 1.15 1255.00 I 1.14 1.13 1.12 1.11 1.10 1280.00 1.10 1.09 1.08 1.07 1.06 „i, 1305.00 1.06 1.06 1.06 1.06 1.06 1330.00 1.06 1.06 1.06 1.06 1.05 1355.00 1.05 1.05 1.05 1.05 1.05 1380.00 I 1.05 1.05 1.05 1.05 1.05 KM 1405.00 I 1.04 1.04 1.04 1.04 1.04 1430.00 I 1.04 1.04 1.04 .97 .95 1455.00 I .95 .94 .94 .94 .94 1480.00 I .93 .93 .93 .93 .93 1505.00 I .92 .92 .92 .92 .91 we 1530.00 .91 .91 .91 .90 .90 1555.00 .90 .90 .89 .89 .89 1580.00 I .89 .88 .88 .88 .88 1605.00 I .88 .87 .87 .87 .87 ow 1630.00 .86 .86 .86 .86 .85 1655.00 .85 .85 .85 .84 .84 1680.00 I .84 .84 .84 .83 .83 1705.00 I .83 .83 .82 .82 .82 '_ 1730.00 I .82 .81 .81 .81 .81 1755.00 I .80 .80 .80 .80 .79 1780.00 I .79 .79 .79 .78 .78 1805.00 I .78 .78 .78 .77 .77 um 1830.00 I .77 .77 .76 .76 .76 1855.00 .76 .75 .75 .75 .75 1880.00 .74 .74 .74 .74 .73 1905.00 .73 .73 .73 .73 .72 ■+ 1930.00 .72 .72 .72 .71 .71 1955.00 .71 .71 .71 .70 .70 1980.00 I .70 .70 .69 .69 .69 2005.00 .69 .68 .68 .68 .68 .r 2030.00 .67 .67 .67 .67 .66 2055.00 .66 .66 .66 .65 .65 2080.00 I .65 .65 .65 .64 .64 2105.00 I .64 .64 .63 .63 .63 mm 2130.00 I .63 .62 .62 .62 .62 2155.00 I .61 .61 .61 .61 .60 2180.00 .60 .60 .60 .60 .59 2205.00 I .59 .59 .59 .58 .58 2230.00 .58 .58 .57 .57 .57 mm o.. um S/N: Bentley Systems, Inc. wm Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 a ma Type. . . . Node: Addition Summary Page 4.04 Name. . . . OUT 10 Event: 2 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop me Storm. . . Typell 24hr Tag: 2 um HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min Time on left represents time for first value in each row. mm 2255.00 .57 .57 .56 .56 .56 2280.00 .56 .55 .55 .55 .55 2305.00 I .54 .54 .54 .54 .53 - 2330.00 I .53 .53 .53 .52 .52 2355.00 I .52 .52 .51 .51 .51 2380.00 I .51 .51 .50 .50 .50 2405.00 I .50 .49 .49 .49 .49 am 2430.00 I .49 .48 .48 .47 .47 2455.00 I .46 .46 .45 .45 .44 2480.00 I .44 .43 .43 .42 .42 2505.00 I .41 .41 .40 .40 .40 M„ 2530.00 .39 .39 .38 .38 .37 2555.00 .37 .36 .36 .35 .35 2580.00 .34 .34 .33 .33 .32 2605.00 .32 .31 .31 .30 .30 ..r 2630.00 I .30 .29 .29 .28 .28 2655.00 ( .27 .27 .27 .26 .26 2680.00 I .26 .25 .25 .24 .24 2705.00 I .23 .23 .22 .22 .21 2730.00 I .21 .20 .20 .19 .19 ma 2755.00 I .18 .18 .17 .17 .17 2780.00 I .16 .16 .15 .15 .15 2805.00 I .14 .14 .13 .13 .13 2830.00 I .13 .12 .12 .12 .11 m` 2855.00 I .11 .11 .10 .10 .10 2880.00 I .10 .09 .09 .09 .09 2905.00 I .09 .08 .08 .08 .08 2930.00 I .08 .07 .07 .07 .07 ma 2955.00 I .07 .07 .06 .06 .06 2980.00 I .06 .06 .06 .05 .05 3005.00 .05 .05 .05 .05 .05 3030.00 .05 .04 .04 .04 .04 "' 3055.00 .04 .04 .04 .04 .04 3080.00 .04 .03 .03 .03 .03 3105.00 I .03 .03 .03 .03 .03 3130.00 I .03 .03 .03 .03 .02 .r 3155.00 I .02 .02 .02 .02 .02 3180.00 I .02 .02 .02 .02 .02 3205.00 I .02 .02 .02 .02 .02 3230.00 I .02 .02 .02 .02 .02 Oft 3255.00 I .01 .01 .01 .01 .01 3280.00 I .01 .01 .01 .01 .01 3305.00 I .01 .01 .01 .01 .01 3330.00 I .01 .01 .01 .01 .01 ,r 3355.00 I .01 .01 .01 .01 .01 mm ma S/N: Bentley Systems, Inc. "` Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 m. moo Type. . . . Node: Addition Summary Page 4.05 Name. . . . OUT 10 Event: 2 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop ma Storm. . . Typell 24hr Tag: 2 HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. - I 3380.00 I .01 .01 .01 .01 .01 3405.00 I .01 .01 .01 .01 .01 3430.00 I .01 .01 .01 .01 .01 me 3455.00 I .01 .01 .01 .00 .00 3480.00 I .00 .00 .00 .00 .00 3505.00 .00 .00 .00 .00 .00 3530.00 I .00 .00 .00 .00 .00 wit 3555.00 I .00 .00 .00 .00 .00 rr rr OW AO WO OW IOW 00 OW OW S/N: Bentley Systems, Inc. ma Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 .r Type. . . . Node: Addition Summary Page 4.06 Name. . . . OUT 10 Event: 10 yr r. File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 10 SUMMARY FOR HYDROGRAPH ADDITION at Node: OUT 10 ..r HYG Directory: H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\ Upstream Link ID Upstream Node ID HYG file HYG ID HYG tag rr ADDLINK 20 BYPASS AREA - C BYPASS AREA - C 10 OUTFALL C VAULT C IN OUTFALL C 10 rr INFLOWS TO: OUT 10 Volume Peak Time Peak Flow rrr HYG file HYG ID HYG tag cu.ft min cfs BYPASS AREA - C 10 30811 715.00 13.33 OUTFALL C 10 297547 725.00 31.82 or TOTAL FLOW INTO: OUT 10 Volume Peak Time Peak Flow HYG file HYG ID HYG tag cu.ft min cfs rr OUT 10 10 328359 720.00 38.44 rr rr or rr rr .r rr S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 S mm Type. . . . Node: Addition Summary Page 4.07 Name. . . . OUT 10 Event: 10 yr or. File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . TypelI 24hr Tag: 10 mm TOTAL NODE INFLOW. . . HYG file = 'r HYG ID = OUT 10 HYG Tag = 10 Peak Discharge = 38.44 cfs mm Time to Peak = 720.00 min HYG Volume = 328359 cu.ft mm HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. mm 260.00 .00 .02 .03 .05 .06 285.00 I .08 .10 .11 .13 .15 310.00 ( .16 .18 .20 .21 .23 335.00 I .24 .26 .27 .28 .29 mm 360.00 I .30 .31 .32 .33 .34 385.00 I .35 .37 .38 .39 .40 410.00 I .41 .41 .42 .43 .44 435.00 I .45 .46 .47 .48 .49 460.00 I .49 .50 .50 .51 .52 MN 485.00 I .53 .53 .54 .55 .56 510.00 I .57 .58 .59 .60 .61 535.00 I .62 .64 .65 .66 .67 560.00 .68 .69 .70 .72 .73 m` 585.00 .75 .76 .78 .80 .82 610.00 I .84 .86 .88 .91 .93 635.00 I .96 1.00 1.03 1.07 1.11 660.00 I 1.16 1.22 1.29 1.36 1.44 mm 685.00 I 1.54 1.64 2.33 4.33 9.53 710.00 I 15.20 28.43 38.44 36.31 33.32 735.00 I 30.67 29.00 27.35 25.56 23.70 760.00 I 21.34 19.11 17.09 15.45 14.00 'g" 785.00 12.88 11.99 11.19 10.59 10.21 810.00 9.83 9.47 9.21 9.05 8.88 835.00 8.72 8.54 8.37 8.20 8.04 860.00 7.88 7.71 7.55 7.39 7.23 - 885.00 I 7.07 6.90 6.74 6.58 6.43 910.00 6.28 6.09 5.91 5.74 5.57 935.00 I 5.41 5.25 5.07 4.85 4.64 960.00 I 4.45 4.27 4.10 3.95 3.81 mm 985.00 I 3.67 3.55 3.44 3.34 3.26 1010.00 I 3.18 3.10 3.03 2.96 2.89 mm mm S/N: Bentley Systems, Inc. r Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 +r Type. . . . Node: Addition Summary Page 4.08 Name. . . . OUT 10 Event: 10 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop rim Storm. . . Typell 24hr Tag: 10 r HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min Time on left represents time for first value in each row. ow 1035.00 2.83 2.77 2.72 2.67 2.61 1060.00 2.57 2.52 2.47 2.43 2.39 1085.00 I 2.35 2.31 2.28 2.24 2.20 i„„ 1110.00 I 2.17 2.14 2.11 2.07 2.04 1135.00 2.01 `1.98 1.96 1.93 1.90 1160.00 1.87 1.85 1.82 1.80 1.79 1185.00 1.77 1.76 1.75 1.73 1.72 um 1210.00 I 1.70 1.69 1.68 1.67 1.66 1235.00 I 1.65 1.64 1.63 1.62 1.61 1260.00 I 1.60 1.59 1.58 1.57 1.56 1285.00 I 1.55 1.54 1.53 1.52 1.51 1310.00 I 1.51 1.50 1.49 1.48 1.47 wils 1335.00 I 1.47 1.46 1.45 1.44 1.44 1360.00 I 1.43 1.42 1.42 1.41 1.40 1385.00 I 1.40 1.39 1.38 1.38 1.37 1410.00 I 1.36 1.36 1.35 1.34 1.34 air 1435.00 I 1.33 1.33 1.20 1.13 1.09 1460.00 I 1.05 1.01 .98 .97 .97 1485.00 I .96 .96 .96 .96 .95 1510.00 I .95 .95 .95 .94 .94 sr 1535.00 I .94 .94 .94 .93 .93 1560.00 I .93 .93 .92 .92 .92 1585.00 .92 .91 .91 .91 .91 1610.00 I .90 .90 .90 .90 .89 ow 1635.00 I .89 .89 .89 .89 .88 1660.00 .88 .88 .88 .87 .87 1685.00 .87 .87 .86 .86 .86 1710.00 i .86 .85 .85 .85 .85 - 1735.00 .85 .84 .84 .84 .84 1760.00 .83 .83 .83 .83 .82 1785.00 .82 .82 .82 .81 .81 1810.00 .81 .81 .80 .80 .80 ..r 1835.00 I .80 .80 .79 .79 .79 1860.00 .79 .78 .78 .78 .78 1885.00 .77 .77 .77 .77 .76 1910.00 I .76 .76 .76 .75 .75 ,r. 1935.00 .75 .75 .75 .74 .74 1960.00 .74 .74 .73 .73 .73 1985.00 I .73 .72 .72 .72 .72 2010.00 I .71 .71 .71 .71 .71 ..r 2035.00 .70 .70 .70 .70 .69 2060.00 I .69 .69 .69 .68 .68 2085.00 I .68 .68 .67 .67 .67 2110.00 .67 .66 .66 .66 .66 um 2135.00 I .66 .65 .65 .65 .65 mop w S/N: Bentley Systems, Inc. glar Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 mm Type. . . . Node: Addition Summary Page 4.09 Name. . . . OUT 10 Event: 10 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop mm Storm. . . Typell 24hr Tag: 10 mm HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. - 2160.00 I .64 .64 .64 .64 .63 2185.00 I .63 .63 .63 .62 .62 2210.00 I .62 .62 .61 .61 .61 ,.. 2235.00 .61 .61 .60 .60 .60 2260.00 .60 .59 .59 .59 .59 2285.00 .58 .58 .58 .58 .58 2310.00 .57 .57 .57 .57 .56 2335.00 .56 .56 .56 .55 .55 mm 2360.00 I .55 .55 .54 .54 .54 2385.00 I .54 .53 .53 .53 .53 2410.00 I .52 .52 .52 .52 .52 w 2435.00 .51 .51 .51 .51 .50 2460.00 I .50 .50 .50 .49 .49 2485.00 I .49 .49 .49 .48 .48 2510.00 .47 .47 .46 .46 .45 2535.00 .45 .44 .44 .43 .43 'm 2560.00 .42 .42 .41 .41 .41 2585.00 I .40 .40 .39 .39 .38 2610.00 I .38 .37 .37 .36 .36 2635.00 I .35 .35 .34 .34 .33 m"` 2660.00 I .33 .32 .32 .31 .31 2685.00 I .31 .30 .30 .29 .29 2710.00 .28 .28 .28 .27 .27 2735.00 .26 .26 .26 .25 .25 "" 2760.00 .25 .24 .24 .23 .22 2785.00 .22 .21 .21 .20 .20 2810.00 .19 .19 .18 .18 .17 2835.00 I .17 .17 .16 .16 .15 mm 2860.00 I .15 .15 .14 .14 .14 2885.00 I .13 .13 .13 .12 .12 2910.00 I .12 .11 .11 .11 .11 2935.00 I .10 .10 .10 .10 .09 mom 2960.00 I .09 .09 .09 .08 .08 2985.00 I .08 .08 .08 .07 .07 3010.00 .07 .07 .07 .07 .06 3035.00 .06 .06 .06 .06 .06 .r 3060.00 .05 .05 .05 .05 .05 3085.00 .05 .05 .05 .04 .04 3110.00 I .04 .04 .04 .04 .04 3135.00 I .04 .04 .04 .03 .03 m„ 3160.00 I .03 .03 .03 .03 .03 3185.00 I .03 .03 .03 .03 .03 3210.00 I .03 .03 .02 .02 .02 3235.00 I .02 .02 .02 .02 .02 3260.00 I .02 .02 .02 .02 .02 mm mm or S/N: Bentley Systems, Inc. +m Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 S Type. . . . Node: Addition Summary Page 4.10 Name. . . . OUT 10 Event: 10 yr am File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 10 w HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min Time on left represents time for first value in each row. am 3285.00 .02 .02 .02 .02 .02 3310.00 I .02 .02 .01 .01 .01 3335.00 I .01 .01 .01 .01 .01 an 3360.00 I .01 .01 .01 .01 .01 3385.00 I .01 .01 .01 .01 .01 3410.00 I .01 .01 .01 .01 .01 3435.00 I .01 .01 .01 .01 .01 r 3460.00 I .01 .01 .01 .01 .01 3485.00 I .01 .01 .01 .01 .01 3510.00 .01 .01 .01 .01 .01 3535.00 .01 .00 .00 .00 .00 ,r 3560.00 I .00 .00 .00 .00 .00 3585.00 .00 .00 .00 .00 .00 3610.00 I .00 .00 .00 .00 .00 3635.00 I .00 .00 OM MO OM OM MO MO MO MO MO MO S/N: Bentley Systems, Inc. a. Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 WM Type. . . . Vol: Elev-Volume Page 5.01 Name. . . . VAULT C ra File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop rMr USER DEFINED VOLUME RATING TABLE Elevation Volume UN (ft) (cu.ft) 397.00 0 397.50 2880 or 398.00 5760 398.50 8640 399.00 11520 399.50 17114 400.00 22709 400.50 28303 401.00 33897 401.50 39492 402.00 45086 OM 402.50 50680 403.00 56275 403.50 61869 UN 404.00 67463 404.50 73058 405.00 78652 405.50 84246 406.00 89841 406.50 95435 407.00 101029 407.50 106624 408.00 112218 `r 408.50 117812 409.00 123407 409.50 129001 410.00 134595 eir 410.50 140190 411.00 145784 411.50 148664 412.00 151544 rr 412.50 154424 413.00 157304 r.. rr UM S/N: Bentley Systems, Inc. •"' Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 S ow Type. . . . Outlet Input Data Page 6.01 Name. . . . Outlet 2 arr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop ow REQUESTED POND WS ELEVATIONS: ar Min. Elev.= 397.00 ft Increment = .50 ft Max. Elev.= 413.00 ft it OUTLET CONNECTIVITY ow ---> Forward Flow Only (UpStream to DnStream) <--- Reverse Flow Only (DnStream to UpStream) <---> Forward and Reverse Both Allowed wr Structure No. Outfall El, ft E2, ft Orifice-Circular UD ---> CO 397.500 413.000 AIM Culvert-Circular Cl ---> CO 403.000 413.000 Culvert-Circular C2 ---> CO 407.000 413.000 Culvert-Circular CO ---> TW 370.000 413.000 TW SETUP, DS Channel nr iar airy MINE rr ar nr S/N: Bentley Systems, Inc. 411110 Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 Type. . . . Outlet Input Data Page 6.02 Name. . . . Outlet 2 am File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop ww OUTLET STRUCTURE INPUT DATA Structure ID = UD Structure Type = Orifice-Circular ow # of Openings = 1 Invert Elev. = 397.50 ft Diameter = 4.00 in um Orifice Coeff. _ .600 WO OW WO OW +r OW OW r OW WO OW S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 m. o w Type. . . . Outlet Input Data Page 6.03 Name. . . . Outlet 2 File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop r OUTLET STRUCTURE INPUT DATA ar Structure ID = Cl Structure Type = Culvert-Circular w e No. Barrels = 1 Barrel Diameter = 12.00 in Upstream Invert = 403.00 ft Dnstream Invert = 401.00 ft me Horiz. Length = 12.00 ft Barrel Length = 12.17 ft Barrel Slope = .16667 ft/ft w OUTLET CONTROL DATA. . . Mannings n = .0130 Ke = .5000 (forward entrance loss) Kb = .031274 (per ft of full flow) it Kr = .5000 (reverse entrance loss) HW Convergence = .001 +/- ft INLET CONTROL DATA. . . Equation form = 1 me Inlet Control K = .0078 Inlet Control M = 2.0000 Inlet Control c = .03790 Inlet Control Y = .6900 we T1 ratio (HW/D) = 1.052 T2 ratio (HW/D) = 1.213 Slope Factor = -.500 me Use unsubmerged inlet control Form 1 equ. below Ti elev. Use submerged inlet control Form 1 equ. above T2 elev. In transition zone between unsubmerged and submerged inlet control, me interpolate between flows at Ti & T2. . . At Ti Elev = 404.05 ft ---> Flow = 2.75 cfs At T2 Elev = 404.21 ft ---> Flow = 3.14 cfs r me OM O P S/N: Bentley Systems, Inc. ee Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 see r► Type. . . . Outlet Input Data Page 6.04 Name. . . . Outlet 2 ow File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop too OUTLET STRUCTURE INPUT DATA +rr Structure ID = C2 Structure Type = Culvert-Circular ow No. Barrels = 1 Barrel Diameter = 18.00 in Upstream Invert = 407.00 ft Dnstream Invert = 405.00 ft Horiz. Length = 12.00 ft Barrel Length = 12.17 ft Barrel Slope = .16667 ft/ft frr OUTLET CONTROL DATA. . . Mannings n = .0130 Ke = .5000 (forward entrance loss) Kb = .018213 (per ft of full flow) Kr = .5000 (reverse entrance loss) ow HW Convergence = .001 +/- ft INLET CONTROL DATA. . . Equation form = 1 ow Inlet Control K = .0078 Inlet Control M = 2.0000 Inlet Control c = .03790 Inlet Control Y = .6900 Ti ratio (HW/D) = 1.052 T2 ratio (HW/D) = 1.213 Slope Factor = -.500 Use unsubmerged inlet control Form 1 equ. below Tl elev. Use submerged inlet control Form 1 equ. above T2 elev. In transition zone between unsubmerged and submerged inlet control, +w interpolate between flows at Tl & T2. . . At Tl Elev = 408.58 ft ---> Flow = 7.58 cfs At T2 Elev = 408.82 ft ---> Flow = 8.66 cfs w ow ow WO vrr S/N: Bentley Systems, Inc. ""' Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 w ow Type. . . . Outlet Input Data Page 6.05 Name. . . . Outlet 2 File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop ow OUTLET STRUCTURE INPUT DATA so Structure ID = CO Structure Type = Culvert-Circular +r No. Barrels = 1 Barrel Diameter = 24.00 in Upstream Invert = 370.00 ft Dnstream Invert = 368.00 ft ow Horiz. Length = 105.00 ft Barrel Length = 105.02 ft Barrel Slope = .01905 ft/ft ,WO OUTLET CONTROL DATA. . . Mannings n = .0130 Ke = .5000 (forward entrance loss) Kb = .012411 (per ft of full flow) r Kr = .5000 (reverse entrance loss) HW Convergence = .001 +/- ft INLET CONTROL DATA. . . Equation form = 1 mo Inlet Control K = .0098 Inlet Control M = 2.0000 Inlet Control c = .03980 Inlet Control Y = .6700 on Tl ratio (HW/D) = 1.151 T2 ratio (HW/D) = 1.297 Slope Factor = -.500 so Use unsubmerged inlet control Form 1 equ. below Tl elev. Use submerged inlet control Form 1 equ. above T2 elev. In transition zone between unsubmerged and submerged inlet control, interpolate between flows at Ti & T2. . . At Tl Elev = 372.30 ft ---> Flow = 15.55 cfs At T2 Elev = 372.59 ft ---> Flow = 17.77 cfs rw Structure ID = TW Structure Type = TW SETUP, DS Channel ow FREE OUTFALL CONDITIONS SPECIFIED CONVERGENCE TOLERANCES. . . w Maximum Iterations= 40 Min. TW tolerance = .01 ft Max. TW tolerance = .01 ft Min. HW tolerance = .01 ft w Max. HW tolerance = .01 ft Min. Q tolerance = .00 cfs Max. Q tolerance = .00 cfs UP S/N: Bentley Systems, Inc. "" Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 we Type. . . . Composite Rating Curve Page 6.06 Name. . . . Outlet 2 rr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop ***** COMPOSITE OUTFLOW SUMMARY **** WS Elev, Total Q Notes Converge Elev. Q TW Elev Error ft cfs ft +/-ft Contributing Structures art 397.00 .00 Free Outfall (no Q: UD,C1,C2,C0) 397.50 .00 Free Outfall (no Q: UD,C1,C2,C0) 398.00 .24 Free Outfall UD,C0 (no Q: Cl,C2) am 398.50 .38 Free Outfall UD,C0 (no Q: Cl,C2) 399.00 .48 Free Outfall UD,C0 (no Q: Cl,C2) 399.50 .57 Free Outfall UD,C0 (no Q: Cl,C2) 400.00 .64 Free Outfall UD,C0 (no Q: Cl,C2) w 400.50 .71 Free Outfall UD,C0 (no Q: Cl,C2) 401.00 .77 Free Outfall UD,C0 (no Q: Cl,C2) 401.50 .82 Free Outfall UD,C0 (no Q: Cl,C2) 402.00 .87 Free Outfall UD,C0 (no Q: Cl,C2) r„ 402.50 .92 Free Outfall UD,C0 (no Q: Cl,C2) 403.00 .97 Free Outfall UD,C0 (no Q: Cl,C2) 403.50 1.62 Free Outfall UD,C1,C0 (no Q: C2) 404.00 3.11 Free Outfall UD,C1,C0 (no Q: C2) rr 404.50 4.82 Free Outfall UD,C1,C0 (no Q: C2) 405.00 5.90 Free Outfall UD,C1,C0 (no Q: C2) 405.50 6.72 Free Outfall UD,C1,C0 (no Q: C2) 406.00 7.45 Free Outfall UD,C1,C0 (no Q: C2) 406.50 8.12 Free Outfall UD,C1,C0 (no Q: C2) ✓ 407.00 8.72 Free Outfall UD,C1,C0 (no Q: C2) 407.50 10.06 Free Outfall UD,C1,C2,C0 408.00 12.63 Free Outfall UD,C1,C2,C0 408.50 15.97 Free Outfall UD,C1,C2,C0 o" 409.00 19.56 Free Outfall UD,C1,C2,C0 409.50 22.69 Free Outfall UD,C1,C2,C0 410.00 24.80 Free Outfall UD,C1,C2,C0 410.50 26.70 Free Outfall UD,C1,C2,C0 ""' 411.00 28.46 Free Outfall UD,C1,C2,C0 411.50 30.09 Free Outfall UD,C1,C2,C0 412.00 31.64 Free Outfall UD,C1,C2,C0 412.50 33.10 Free Outfall UD,C1,C2,C0 413.00 34.49 Free Outfall UD,C1,C2,C0 ow r S/N: Bentley Systems, Inc. Bentley PondPac}k (10.00.027.00) 7:13 PM 10/22/2014 ow Type. . . . Pond Routing Summary Page 7.01 Name. . . . VAULT C OUT Tag: 2 Event: 2 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop ow Storm. . . Typell 24hr Tag: 2 ow LEVEL POOL ROUTING SUMMARY HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\ "'r Inflow HYG file = NONE STORED - VAULT C IN 2 Outflow HYG file = NONE STORED - VAULT C OUT 2 Pond Node Data = VAULT C Pond Volume Data = VAULT C Pond Outlet Data = Outlet 2 No Infiltration w INITIAL CONDITIONS Starting WS Slav = 397.00 ft Starting Volume = 0 cu.ft Starting Outflow = .00 cfs Starting Infiltr. = .00 cfs Starting Total Qout= .00 cfs Time Increment = 5.00 min INFLOW/OUTFLOW HYDROGRAPH SUMMARY w Peak Inflow = 75.68 cfs at 715.00 min Peak Outflow = 9.24 cfs at 735.00 min Peak Elevation = 407.19 ft ow Peak Storage = 103197 cu.ft MP MASS BALANCE (cu.ft) + Initial Vol = 0 + HYG Vol IN = 187870 - - Infiltration = 0 - HYG Vol OUT = 184954 - Retained Vol = 2915 ,r Unrouted Vol = - cu.ft (.000% of Inflow Volume) ow tiw ow r S/N: Bentley Systems, Inc. w Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 ow NM Type. . . . Pond Routed HYG (total out) Page 7.02 Name. . . . VAULT C OUT Tag: 2 Event: 2 yr air File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 2 ow POND ROUTED TOTAL OUTFLOW HYG. . . HYG file = "" HYG ID = VAULT C OUT HYG Tag = 2 Peak Discharge = 9.24 cfs are Time to Peak = 735.00 min HYG Volume = 184954 cu.ft OP HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min Time on left represents time for first value in each row. ,w. 150.00 .00 .00 .00 .00 .00 175.00 .00 .00 .00 .00 .00 200.00 I .00 .00 .00 .00 .00 225.00 I .00 .00 .00 .00 .00 OP 250.00 I .00 .00 .00 .00 .00 275.00 I .00 .00 .00 .00 .00 300.00 I .00 .00 .00 .00 .00 325.00 I .00 .00 .00 .00 .00 350.00 .00 .00 .00 .02 .03 so 375.00 ( .04 .05 .07 .08 .09 400.00 .11 .12 .13 .14 .16 425.00 I .17 .18 .20 .21 .22 450.00 I .23 .25 .25 .26 .27 p 475.00 I .28 .28 .29 .30 .31 500.00 .32 .33 .34 .35 .36 525.00 .37 .39 .40 .41 .42 550.00 .43 .44 .45 .46 .47 Mil 575.00 .48 .49 .49 .50 .50 600.00 I .51 .51 .52 .53 .54 625.00 I .54 .55 .56 .57 .58 650.00 I .59 .60 .61 .62 .64 `r* 675.00 I .65 .66 .68 .70 .72 700.00 .77 .85 .95 4.43 7.50 725.00 I 8.64 9.14 9.24 9.22 9.13 750.00 I 8.96 8.74 8.61 8.49 8.36 Po 775.00 I 8.23 8.10 7.94 7.79 7.64 800.00 I 7.48 7.32 7.16 6.99 6.83 825.00 I 6.67 6.49 6.32 6.15 5.98 850.00 5.79 5.59 5.39 5.21 5.03 awe 875.00 I 4.86 4.63 4.40 4.18 3.98 900.00 3.79 3.62 3.46 3.31 3.17 awe 0101 *wr S/N: Bentley Systems, Inc. '"' Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 *w OW Type. . . . Pond Routed HYG (total out) Page 7.03 Name. . . . VAULT C OUT Tag: 2 Event: 2 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop mit Storm. . . Typell 24hr Tag: 2 w HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min Time on left represents time for first value in each row. w 925.00 3.05 2.94 2.84 2.74 2.65 950.00 2.56 2.48 2.40 2.32 2.25 975.00 2.18 2.12 2.06 2.00 1.95 me, 1000.00 1.90 1.85 1.81 1.77 1.73 1025.00 1.69 1.65 1.62 1.60 1.59 1050.00 1.58 1.56 1.55 1.53 1.52 1075.00 1.51 1.49 1.48 1.47 1.45 mo 1100.00 1.44 1.43 1.41 1.40 1.39 1125.00 1.37 1.36 1.35 1.33 1.32 1150.00 1.31 1.29 1.28 1.27 1.25 1175.00 1.24 1.23 1.21 1.20 1.19 1200.00 1.17 1.16 1.15 1.14 1.12 we 1225.00 I 1.11 1.10 1.09 1.08 1.07 1250.00 I 1.06 1.05 1.04 1.03 1.02 1275.00 1.01 1.00 .99 .98 .98 1300.00 .97 .97 .97 .97 .97 MP 1325.00 I .97 .97 .97 .97 .96 1350.00 .96 .96 .96 .96 .96 1375.00 .96 .96 .96 .96 .96 1400.00 .96 .96 .96 .96 .95 "` 1425.00 .95 .95 .95 .95 .95 1450.00 I .95 .95 .94 .94 .94 1475.00 I .94 .93 .93 .93 .93 1500.00 I .93 .92 .92 .92 .92 °r' 1525.00 .91 .91 .91 .91 .90 1550.00 I .90 .90 .90 .89 .89 1575.00 .89 .89 .88 .88 .88 1600.00 .88 .88 .87 .87 .87 .10, 1625.00 .87 .86 .86 .86 .86 1650.00 .85 .85 .85 .85 .84 1675.00 I .84 .84 .84 .84 .83 1700.00 I .83 .83 .83 .82 .82 we 1725.00 .82 .82 .81 .81 .81 1750.00 .81 .80 .80 .80 .80 1775.00 .79 .79 .79 .79 .78 1800.00 I .78 .78 .78 .78 .77 um 1825.00 I .77 .77 .77 .76 .76 1850.00 I .76 .76 .75 .75 .75 1875.00 .75 .74 .74 .74 .74 1900.00 I .73 .73 .73 .73 .73 rr 1925.00 .72 .72 .72 .72 .71 1950.00 .71 .71 .71 .71 .70 1975.00 .70 .70 .70 .69 .69 2000.00 .69 .69 .68 .68 .68 or 2025.00 .68 .67 .67 .67 .67 as w S/N: Bentley Systems, Inc. a... Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 r ww Type. . . . Pond Routed HYG (total out) Page 7.04 Name. . . . VAULT C OUT Tag: 2 Event: 2 yr .w File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 2 wow HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. wm 2050.00 I .66 .66 .66 .66 .65 2075.00 I .65 .65 .65 .65 .64 2100.00 I .64 .64 .64 .63 .63 w 2125.00 I .63 .63 .62 .62 .62 2150.00 I .62 .61 .61 .61 .61 2175.00 I .60 .60 .60 .60 .60 2200.00 I .59 .59 .59 .59 .58 ww 2225.00 I .58 .58 .58 .57 .57 2250.00 I .57 .57 .57 .56 .56 2275.00 I .56 .56 .55 .55 .55 2300.00 .55 .54 .54 .54 .54 2325.00 .53 .53 .53 .53 .52 ww 2350.00 .52 .52 .52 .51 .51 2375.00 .51 .51 .51 .50 .50 2400.00 .50 .50 .49 .49 .49 ow 2425.00 .49 .49 .48 .48 .47 2450.00 .47 .46 .46 .45 .45 2475.00 I .44 .44 .43 .43 .42 2500.00 I .42 .41 .41 .40 .40 2525.00 I .40 .39 .39 .38 .38 ww 2550.00 I .37 .37 .36 .36 .35 2575.00 I .35 .34 .34 .33 .33 2600.00 I .32 .32 .31 .31 .30 2625.00 I .30 .30 .29 .29 .28 ww 2650.00 I .28 .27 .27 .27 .26 2675.00 I .26 .26 .25 .25 .24 2700.00 I .24 .23 .23 .22 .22 2725.00 I .21 .21 .20 .20 .19 = 2750.00 I .19 .18 .18 .17 .17 2775.00 I .17 .16 .16 .15 .15 2800.00 I .15 .14 .14 .13 .13 2825.00 I .13 .13 .12 .12 .12 rir 2850.00 I .11 .11 .11 .10 .10 2875.00 I .10 .10 .09 .09 .09 2900.00 I .09 .09 .08 .08 .08 2925.00 I .08 .08 .07 .07 .07 mm 2950.00 I .07 .07 .07 .06 .06 2975.00 .06 .06 .06 .06 .05 3000.00 .05 .05 .05 .05 .05 3025.00 ( .05 .05 .04 .04 .04 moo 3050.00 .04 .04 .04 .04 .04 3075.00 .04 .04 .03 .03 .03 3100.00 .03 .03 .03 .03 .03 3125.00 .03 .03 .03 .03 .03 a•. 3150.00 I .02 .02 .02 .02 .02 VIM VAN S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 mm op Type. . . . Pond Routed HYG (total out) Page 7.05 Name. . . . VAULT C OUT Tag: 2 Event: 2 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop pop Storm. . . Typell 24hr Tag: 2 oo HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. op 3175.00 I .02 .02 .02 .02 .02 3200.00 .02 .02 .02 .02 .02 3225.00 I .02 .02 .02 .02 .02 or 3250.00 I .02 .01 .01 .01 .01 3275.00 I .01 .01 .01 .01 .01 3300.00 I .01 .01 .01 .01 .01 3325.00 I .01 .01 .01 .01 .01 OW 3350.00 I .01 .01 .01 .01 .01 3375.00 I .01 .01 .01 .01 .01 3400.00 .01 .01 .01 .01 .01 3425.00 I .01 .01 .01 .01 .01 ,*„ 3450.00 I .01 .01 .01 .01 .00 3475.00 I .00 .00 .00 .00 .00 3500.00 .00 .00 .00 .00 .00 3525.00 .00 .00 .00 .00 .00 3550.00 .00 .00 .00 .00 .00 opt 3575.00 .00 op NO +rr ISIS rir •r Mr ISIS SIVIO S/N: Bentley Systems, Inc. Mir Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 or Type. . . . Pond Routing Summary Page 7.06 Name. . . . VAULT C OUT Tag: 10 Event: 10 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 10 r LEVEL POOL ROUTING SUMMARY HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\ "m Inflow HYG file = NONE STORED - VAULT C IN 10 Outflow HYG file = NONE STORED - VAULT C OUT 10 Pond Node Data = VAULT C r Pond Volume Data = VAULT C Pond Outlet Data = Outlet 2 No Infiltration mm INITIAL CONDITIONS Starting WS Elev = 397.00 ft „r, Starting Volume = 0 cu.ft Starting Outflow = .00 cfs Starting Infiltr. = .00 cfs Starting Total Qout= .00 cfs „,m Time Increment = 5.00 min INFLOW/OUTFLOW HYDROGRAPH SUMMARY Peak Inflow = 117.80 cfs at 715.00 min Peak Outflow = 31.82 cfs at 725.00 min Peak Elevation = 412.06 ft +.m Peak Storage = 151907 cu.ft mew MASS BALANCE (cu.ft) + Initial Vol = 0 + HYG Vol IN = 300462 UM - Infiltration = 0 - HYG Vol OUT = 297547 - Retained Vol = 2915 mm Unrouted Vol = - cu.ft (.000% of Inflow Volume) r tom MK S/N: Bentley Systems, Inc. mot Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 mm mil Type. . . . Pond Routed HYG (total out) Page 7.07 Name. . . . VAULT C OUT Tag: 10 Event: 10 yr ma File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 10 MI li POND ROUTED TOTAL OUTFLOW HYG. . . HYG file = ow HYG ID = VAULT C OUT HYG Tag = 10 Peak Discharge = 31.82 cfs Time to Peak = 725.00 min HYG Volume = 297547 cu.ft ra HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. - 105.00 I .00 .00 .00 .00 .00 130.00 I .00 .00 .00 .00 .00 155.00 I .00 .00 .00 .00 .00 180.00 I .00 .00 .00 .00 .00 „. 205.00 .00 .00 .00 .00 .00 o 230.00 I .00 .00 .00 .00 .00 255.00 .00 .00 .02 .03 .05 280.00 .06 .08 .10 .11 .13 305.00 I .15 .16 .18 .20 .21 ow 330.00 I .23 .24 .26 .27 .28 355.00 I .29 .30 .31 .32 .33 380.00 I .34 .35 .37 .38 .39 405.00 I .40 .41 .41 .42 .43 WS 430.00 I .44 .45 .46 .47 .48 455.00 I .49 .49 .50 .50 .51 480.00 .51 .52 .52 .53 .53 505.00 I .54 .54 .55 .56 .56 NW 530.00 .57 .58 .58 .59 .60 555.00 .61 .61 .62 .63 .64 580.00 ( .64 .65 .66 .67 .67 605.00 I .68 .69 .70 .71 .72 ma 630.00 I .73 .74 .76 .77 .78 655.00 I .80 .81 .83 .84 .86 680.00 I .88 .90 .92 .96 1.62 705.00 I 4.91 7.55 15.10 27.13 31.82 ma 730.00 I 31.05 28.76 27.29 25.87 24.31 755.00 22.62 20.34 18.16 16.19 14.59 780.00 I 13.20 12.12 11.26 10.49 9.91 805.00 I 9.56 9.22 8.88 8.64 8.50 +.. 830.00 I 8.35 8.21 8.06 7.90 7.74 855.00 7.58 7.43 7.27 7.11 6.96 w rr a.r S/N: Bentley Systems, Inc. °""' Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 m. or Type. . . . Pond Routed HYG (total out) Page 7.08 Name. . . . VAULT C OUT Tag: 10 Event: 10 yr .O File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop Storm. . . Typell 24hr Tag: 10 r HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min Time on left represents time for first value in each row. wr 880.00 I 6.81 6.66 6.50 6.34 6.19 905.00 I 6.05 5.90 5.72 5.55 5.38 930.00 I 5.22 5.07 4.92 4.74 4.53 +r 955.00 I 4.33 4.14 3.97 3.80 3.65 980.00 I 3.52 3.39 3.27 3.16 3.06 1005.00 I 2.98 2.90 2.83 2.76 2.69 1030.00 2.63 2.57 2.51 2.46 2.41 rr 1055.00 2.36 2.32 2.27 2.23 2.19 1080.00 2.15 2.12 2.08 2.04 2.01 1105.00 I 1.98 1.95 1.92 1.89 1.86 1130.00 1.83 1.80 1.78 1.75 1.73 r 1155.00 1.70 1.68 1.65 1.63 1.61 1180.00 1.60 1.59 1.58 1.57 1.56 1205.00 1.55 1.53 1.52 1.51 1.50 1230.00 I 1.49 1.48 1.47 1.46 1.45 am 1255.00 I 1.44 1.43 1.42 1.41 1.40 1280.00 I 1.39 1.38 1.38 1.37 1.36 1305.00 I 1.35 1.34 1.34 1.33 1.32 1330.00 I 1.31 1.31 1.30 1.29 1.29 1355.00 I 1.28 1.27 1.27 1.26 1.25 r. 1380.00 I 1.25 1.24 1.24 1.23 1.22 1405.00 I 1.22 1.21 1.21 1.20 1.19 1430.00 I 1.19 1.18 1.18 1.16 1.12 1455.00 1.09 1.05 1.01 .98 .97 mr` 1480.00 I .97 .96 .96 .96 .96 1505.00 .95 .95 .95 .95 .94 1530.00 .94 .94 .94 .94 .93 1555.00 .93 .93 .93 .92 .92 4111" 1580.00 I .92 .92 .91 .91 .91 1605.00 .91 .90 .90 .90 .90 1630.00 I .89 .89 .89 .89 .89 1655.00 I .88 .88 .88 .88 .87 ®" 1680.00 I .87 .87 .87 .86 .86 1705.00 I .86 .86 .85 .85 .85 1730.00 I .85 .85 .84 .84 .84 1755.00 I .84 .83 .83 .83 .83 ill 1780.00 I .82 .82 .82 .82 .81 1805.00 I .81 .81 .81 .80 .80 1830.00 I .80 .80 .80 .79 .79 1855.00 .79 .79 .78 .78 .78 r. 1880.00 .78 .77 .77 .77 .77 1905.00 I .76 .76 .76 .76 .75 1930.00 .75 .75 .75 .75 .74 1955.00 .74 .74 .74 .73 .73 for 1980.00 I .73 .73 .72 .72 .72 r S/N: Bentley Systems, Inc. "" Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 am Type. . . . Pond Routed HYG (total out) Page 7.09 Name. . . . VAULT C OUT Tag: 10 Event: 10 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop ma Storm. . . Typell 24hr Tag: 10 ma HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min Time on left represents time for first value in each row. MK 2005.00 I .72 .71 .71 .71 .71 2030.00 I .71 .70 .70 .70 .70 2055.00 I .69 .69 .69 .69 .68 „r 2080.00 I .68 .68 .68 .67 .67 2105.00 I .67 .67 .66 .66 .66 2130.00 I .66 .66 .65 .65 .65 2155.00 I .65 .64 .64 .64 .64 ma 2180.00 .63 .63 .63 .63 .62 2205.00 .62 .62 .62 .61 .61 2230.00 .61 .61 .61 .60 .60 2255.00 I .60 .60 .59 .59 .59 ma 2280.00 I .59 .58 .58 .58 .58 2305.00 I .58 .57 .57 .57 .57 2330.00 I .56 .56 .56 .56 .55 2355.00 I .55 .55 .55 .54 .54 2380.00 I .54 .54 .53 .53 .53 ma 2405.00 .53 .52 .52 .52 .52 2430.00 .52 .51 .51 .51 .51 2455.00 .50 .50 .50 .50 .49 2480.00 I .49 .49 .49 .49 .48 "` 2505.00 I .48 .47 .47 .46 .46 2530.00 I .45 .45 .44 .44 .43 2555.00 I .43 .42 .42 .41 .41 2580.00 I .41 .40 .40 .39 .39 "m 2605.00 I .38 .38 .37 .37 .36 2630.00 .36 .35 .35 .34 .34 2655.00 .33 .33 .32 .32 .31 2680.00 .31 .31 .30 .30 .29 NMI 2705.00 .29 .28 .28 .28 .27 2730.00 I .27 .26 .26 .26 .25 2755.00 I .25 .25 .24 .24 .23 2780.00 I .22 .22 .21 .21 .20 am 2805.00 I .20 .19 .19 .18 .18 2830.00 I .17 .17 .17 .16 .16 2855.00 I .15 .15 .15 .14 .14 2880.00 I .14 .13 .13 .13 .12 rr 2905.00 .12 .12 .11 .11 .11 2930.00 I .11 .10 .10 .10 .10 2955.00 .09 .09 .09 .09 .08 2980.00 .08 .08 .08 .08 .07 w 3005.00 I .07 .07 .07 .07 .07 3030.00 I .06 .06 .06 .06 .06 3055.00 .06 .05 .05 .05 .05 3080.00 .05 .05 .05 .05 .04 am 3105.00 .04 .04 .04 .04 .04 am ma S/N: Bentley Systems, Inc. .r Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 ma rr Type. . . . Pond Routed HYG (total out) Page 7.10 Name. . . . VAULT C OUT Tag: 10 Event: 10 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Underground Vault Design\Post Develop r. Storm. . . Typell 24hr Tag: 10 or HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min Time on left represents time for first value in each row. or 3130.00 I .04 .04 .04 .04 .03 3155.00 I .03 .03 .03 .03 .03 3180.00 I .03 .03 .03 .03 .03 OM 3205.00 I .03 .03 .03 .02 .02 3230.00 I .02 .02 .02 .02 .02 3255.00 .02 .02 .02 .02 .02 3280.00 .02 .02 .02 .02 .02 or 3305.00 .02 .02 .02 .01 .01 3330.00 I .01 .01 .01 .01 .01 3355.00 I .01 .01 .01 .01 .01 3380.00 I .01 .01 .01 .01 .01 3405.00 I .01 .01 .01 .01 .01 or 3430.00 I .01 .01 .01 .01 .01 3455.00 .01 .01 .01 .01 .01 3480.00 .01 .01 .01 .01 .01 3505.00 .01 .01 .01 .01 .01 or 3530.00 I .01 .01 .00 .00 .00 3555.00 I .00 .00 .00 .00 .00 3580.00 I .00 .00 .00 .00 .00 3605.00 I .00 .00 .00 .00 .00 "N 3630.00 I .00 .00 .00 rr rr or or or or or or S/N: Bentley Systems, Inc. r+ Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 r. ow Appendix A A-1 r�u Index of Starting Page Numbers for ID Names A AREA TO VAULT C. . . 2.01, 3.01 rr B BYPASS AREA - C. . . 2.03, 3.02 0 um OUT 10. . . 4.01, 4.06 Outlet 2. . . 6.01, 6.06 V rim VAULT C. . . 5.01, 7.01, 7.02, 7.06, 7.07 W mu Watershed. . . 1.01 mm (rr um OW OK rr OM w WO S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 7:13 PM 10/22/2014 ara irra ism air aa ii• aim la 40' -I �. WO LANDFILL POND DESIGN DATA RUNOFF EVALUATION FROM LANDFILL Landfill Dry Pond Description CN A Tc Q(2YR) Q(10 YR) (Min) (cfs) (cfs) PRE-DEVELOPED Landfill Area 77 21.16 10 41.62 85.39 POST-DEVELOPED Landfill Area to Pond (Outfall from Pond) 88 6.75 5 11.64 24.20 Onsite Undetained -Area not to Pond 75 14.71 10 28.94 59.36 Net Reduction in Flow from Landfill Site I I I I 1.04 I 1.83 a a a a a a II MP Orifice Sizing Calculations 5th Street Station - Landfill Pond Total Drainage Area = 6.75 ac. �• Impervious Area = 1.74 ac. Water Quality Volume WQV required = 2 x (0.5 in / 12) x (Imp Area x 43,560) = 6316 cf. Line ""' BMP Storage Provided (from pond volume table) (a) 6325 cf. Max. Head (h) at the required BMP storage from the elevation-storage curve for the facilty. (b) 4.25 Peak outflow rate (Qp) at the max. head for a drawdown time of 30 hrs. [Qp = S/(0.5 x 3600 x 30)] 0.0000185185 x Line (a) = (c) 0.12 Required orifice area (A) [A = Qp / (0.6 x (64.4 x h))^0.5)] Line (c) / [0.6 x (64.4 x Line (b))^0.5] = (d) 0.01 Diameter of the circular orifice. 2.0 x (Line (d) / 3.1415927)^0.5 = (e) 0.12 ft = 1.47 in (2" Min.) . .. 7 7 7 7 7 7 3 . 4 00 U U 0 0 0 0 0 M t0 00 CO CO CD 00 O) Q) CO N O O 6 O ,r N CO N 00 O) CO ,— N .u. II II II II II II II II 11 .re Ll.l U J j 22 2 U OWWJC� 0 U S Z JJ J 0 I— WQ0sz w 0 0 0 00 0 LL Z Ce w I- LL F_ >> > } Q 0 w d W W ¢ w WW < < � 0 0 0 Z SW Un- cn0 ~O >- W U 0 Z < QoWO I- 0 0 W 00 IL m Cl) UD Q ? 0 0 .r. Z J 5 J 0 0 j O j 0 u_>- m O 0 Z .. <Q } D N 0 c2 m '– — II W m W u < 0 .. Z w U CO U z (C) N wD � v- co r- O) 1- 000 CONNMCO 0m r O CO O CD CD 1— O V vv O r-: r-- O `I' J N US A r. Q x- 0 a o Z ~ I-' Q c0 ow O = = W COI M N < � � � Lu aLu a' ww ft N W W = W W _ ~ I— W W "r 0 Z -I wv > > -' ° oz z2 ' � w � WQ < IwZ 1.� = — w ZQ W W — >- CO LL - ce cC J W cC o w F- w � � Q Q � ' U H 1 Qww � aw zuwicwi) cwn ON Ow `"` WCL Q I— w < 1- MM W - - �ZZ -E O a >- Z - - 2 .. vow arr arr LANDFILL POND 11 OUTING COMPUTATIONS err r a a a AM Table of Contents i """' Table of Contents mm ********************** MASTER SUMMARY ********************** Watershed Master Network Summary 1.01 r ********************** TC CALCULATIONS ********************* dm PRE DEV FLOWS. . . Tc Calcs 2.01 rr ********************** CN CALCULATIONS ********************* PRE DEV FLOWS. . . Runoff CN-Area 3.01 mm ******************** RUNOFF HYDROGRAPHS ******************** mm PRE DEV FLOWS. . . Pre 2 Unit Hyd. Summary 4.01 Unit Hyd. (HYG output) 4.02 mm PRE DEV FLOWS. . . Pre 10 Unit Hyd. Summary 4.04 Unit Hyd. (HYG output) 4.05 rr SIP wr S/N: Bentley Systems, Inc. ur Bentley PondPack (10.00.027.00) 7:57 PM 10/22/2014 mm mw Type. . . . Master Network Summary Page 1.01 Name. . . . Watershed .r File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PreDev.ppw MASTER DESIGN STORM SUMMARY Network Storm Collection: Albemarle County mu Total Depth Rainfall Return Event in Type RNF ID Pre 2 3.7000 Synthetic Curve Typell 24hr Pre 10 5.6000 Synthetic Curve Typell 24hr um MASTER NETWORK SUMMARY SCS Unit Hydrograph Method mm (*Node=Outfall; +Node=Diversion; ) (Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt) Max Return HYG Vol Qpeak Qpeak Max WSEL Pond Storage Node ID Type Event cu.ft Trun min cfs ft cu.ft mw *OUT 10 JCT 2 110977 720.00 41.62 *OUT 10 JCT 10 226075 720.00 85.39 PRE DEV FLOWS AREA 2 110977 720.00 41.62 PRE DEV FLOWS AREA 10 226075 720.00 85.39 ww .r OW w OW Or S/N: Bentley Systems, Inc. um Bentley PondPack (10.00.027.00) 7:57 PM 10/22/2014 a r, Type. . . . Tc Calcs Page 2.01 Name. . . . PRE DEV FLOWS rr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PreDev.ppw rat TIME OF CONCENTRATION CALCULATOR rr fro Segment #1: Tc: User Defined Segment #1 Time: 10.00 min or Total Tc: 10.00 min +rr IOW arri rir rrr rr rr r IMP wr S/N: Bentley Systems, Inc. tor Bentley PondPack (10.00.027.00) 7:57 PM 10/22/2014 rr Type. . . . Tc Calcs Page 2.02 Name. . . . PRE DEV FLOWS File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PreDev.ppw wo Tc Equations used. . . wry ___= User Defined ++r Tc = Value entered by user Where: Tc = Time of concentration VIM Mrr wr rir rr rA MI arr S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 7:57 PM 10/22/2014 two Type. . . . Runoff CN-Area Page 3.01 Name. . . . PRE DEV FLOWS File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PreDev.ppw RUNOFF CURVE NUMBER DATA woo Impervious Area Adjustment Adjusted Soil/Surface Description CN acres %C %UC CN Woods - good 55 1.950 55.00 Woods - good 77 19.210 77.00 air COMPOSITE AREA & WEIGHTED CN ---> 21.160 74.97 (75) *WI Mw WW MW WO WY MM. S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 7:57 PM 10/22/2014 IOW mem Type. . . . Unit Hyd. Summary Page 4.01 Name. . . . PRE DEV FLOWS Tag: Pre 2 Event: 2 yr w File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PreDev.ppw Storm. . . Typell 24hr Tag: Pre 2 mom SCS UNIT HYDROGRAPH METHOD STORM EVENT: 2 year storm OW Duration = 1440.00 min Rain Depth = 3.7000 in Rain Dir = H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond De Rain File -ID = - Typell 24hr Unit Hyd Type = Default Curvilinear wa HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond De HYG File - ID = - PRE DEV FLOWS Pre 2 Tc = 10.00 min Drainage Area = 21.160 acres Runoff CN= 75 mm Computational Time Increment = 1.333 min Computed Peak Time = 720.00 min Computed Peak Flow = 41.62 cfs my Time Increment for HYG File = 5.00 min Peak Time, Interpolated Output = 720.00 min .r Peak Flow, Interpolated Output = 41.62 cfs DRAINAGE AREA um ID:PRE DEV FLOWS CN = 75 Area = 21.160 acres S = 3.3333 in ""' 0.2S = .6667 in Cumulative Runoff '*r'' 1.4452 in 111007 cu.ft HYG Volume. . . 110977 cu.ft (area under HYG curve) air ***** SCS UNIT HYDROGRAPH PARAMETERS ***** Time Concentration, Tc = 10.000 min (ID: PRE DEV FLOWS) .r Computational Incr, Tm = 1.333 min = 0.20000 Tp Unit Hyd. Shape Factor = 483.432 (37.46% under rising limb) K = 483.43/645.333, K = .7491 (also, K = 2/ (1+(Tr/Tp) ) „m. Receding/Rising, Tr/Tp = 1.6698 (solved from K = .7491) Unit peak, qp = 143.85 cfs Unit peak time Tp = 6.667 min Unit receding limb, Tr = 26.667 min um Total unit time, Tb = 33.333 min me mom S/N: Bentley Systems, Inc. mm Bentley PondPack (10.00.027.00) 7:57 PM 10/22/2014 mm ma Type. . . . Unit Hyd. (HYG output) Page 4.02 Name. . . . PRE DEV FLOWS Tag: Pre 2 Event: 2 yr ow File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PreDev.ppw Storm. . . Typell 24hr Tag: Pre 2 w. SCS UNIT HYDROGRAPH METHOD STORM EVENT: 2 year storm w Duration = 1440.00 min Rain Depth = 3.7000 in Rain Dir = H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond De Rain File -ID = - Typell 24hr Unit Hyd Type = Default Curvilinear NW HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond De HYG File - ID = - PRE DEV FLOWS Pre 2 Tc = 10.00 min Drainage Area = 21.160 acres Runoff CN= 75 .ris Calc.Increment= 1.333 min Out.Incr.= 5.00 min HYG Volume = 110977 cu.ft HYDROGRAPH ORDINATES (cfs) ,w, Time Output Time increment = 5.00 min min Time on left represents time for first value in each row. 600.00 I .00 .00 .02 .04 .07 625.00 I .11 .14 .19 .23 .29 gm 650.00 I .35 .42 .50 .59 .71 675.00 I .85 1.03 1.23 1.46 2.20 700.00 I 4.26 8.69 16.51 32.39 41.62 725.00 I 33.06 16.95 10.47 7.98 6.65 .r 750.00 I 5.65 4.86 4.33 4.02 3.79 775.00 I 3.58 3.38 3.20 3.04 2.92 800.00 I 2.80 2.69 2.58 2.48 2.38 825.00 I 2.30 2.22 2.13 2.05 1.98 '"` 850.00 I 1.93 1.89 1.86 1.83 1.80 875.00 I 1.78 1.75 1.72 1.69 1.67 900.00 1.64 1.61 1.58 1.55 1.52 925.00 1.49 1.47 1.44 1.41 1.38 No 950.00 1.35 1.32 1.29 1.26 1.24 975.00 1.23 1.22 1.21 1.20 1.19 1000.00 1.18 1.17 1.16 1.15 1.14 1025.00 I 1.13 1.12 1.10 1.09 1.08 ow 1050.00 1.07 1.06 1.05 1.04 1.03 1075.00 I 1.02 1.01 1.00 .99 .98 1100.00 I .97 .96 .95 .93 .92 1125.00 I .91 .90 .89 .88 .87 - 1150.00 I .86 .85 .84 .82 .81 1175.00 I .80 .79 .78 .77 .76 1200.00 I .75 .74 .73 .73 .72 1225.00 I .72 .72 .72 .72 .71 OOP 1250.00 I .71 .71 .71 .71 .70 1275.00 I .70 .70 .70 .70 .69 1300.00 I .69 .69 .69 .69 .68 1325.00 I .68 .68 .68 .68 .67 r mw S/N: Bentley Systems, Inc. ""' Bentley PondPack (10.00.027.00) 7:57 PM 10/22/2014 oft Type. . . . Unit Hyd. (HYG output) Page 4.03 Name. . . . PRE DEV FLOWS Tag: Pre 2 Event: 2 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PreDev.ppw Storm. . . Typell 24hr Tag: Pre 2 HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min I Time on left represents time for first value in each row. 1350.00 I .67 .67 .67 .67 .66 1375.00 I .66 .66 .66 .66 .65 1400.00 I .65 .65 .65 .64 .64 took 1425.00 I .64 .64 .64 .63 .46 1450.00 I .16 .05 .01 .00 .00 wr SIM np S/N: Bentley Systems, Inc. "r Bentley PondPack (10.00.027.00) 7:57 PM 10/22/2014 Type. . . . Unit Hyd. Summary Page 4.04 Name. . . . PRE DEV FLOWS Tag: Pre 10 Event: 10 yr .r File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PreDev.ppw Storm. . . Typell 24hr Tag: Pre 10 mm SCS UNIT HYDROGRAPH METHOD STORM EVENT: 10 year storm i'■ Duration = 1440.00 min Rain Depth = 5.6000 in Rain Dir = H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond De Rain File -ID = - Typell 24hr Unit Hyd Type = Default Curvilinear m HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond De HYG File - ID = - PRE DEV FLOWS Pre 10 Tc = 10.00 min Drainage Area = 21.160 acres Runoff CN= 75 rr Computational Time Increment = 1.333 min Computed Peak Time = 720.00 min _, Computed Peak Flow = 85.38 cfs Time Increment for HYG File = 5.00 min Peak Time, Interpolated Output = 720.00 min Peak Flow, Interpolated Output = 85.39 cfs 4. DRAINAGE AREA 4111. ID:PRE DEV FLOWS CN = 75 Area = 21.160 acres S = 3.3333 in ow 0.25 = .6667 in Cumulative Runoff — 2.9441 in 226138 cu.ft HYG Volume. . . 226075 cu.ft (area under HYG curve) mm ***** SCS UNIT HYDROGRAPH PARAMETERS ***** Time Concentration, Tc = 10.000 min (ID: PRE DEV FLOWS) +w Computational Incr, Tm = 1.333 min = 0.20000 Tp Unit Hyd. Shape Factor = 483.432 (37.46% under rising limb) K = 483.43/645.333, K = .7491 (also, K = 2/ (1+(Tr/Tp) ) mo Receding/Rising, Tr/Tp = 1.6698 (solved from K = .7491) Unit peak, qp = 143.85 cfs Unit peak time Tp = 6.667 min Unit receding limb, Tr = 26.667 min Total unit time, Tb = 33.333 min mm mm S/N: Bentley Systems, Inc. '°"r Bentley PondPack (10.00.027.00) 7:57 PM 10/22/2014 mm Type. . . . Unit Hyd. (HYG output) Page 4.05 Name. . . . PRE DEV FLOWS Tag: Pre 10 Event: 10 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PreDev.ppw mmi Storm. . . Typell 24hr Tag: Pre 10 mm SCS UNIT HYDROGRAPH METHOD STORM EVENT: 10 year storm me Duration = 1440.00 min Rain Depth = 5.6000 in Rain Dir = H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond De Rain File -ID = - Typell 24hr Unit Hyd Type = Default Curvilinear err- HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond De HYG File - ID = - PRE DEV FLOWS Pre 10 Tc = 10.00 min Drainage Area = 21.160 acres Runoff CN= 75 ,w, Calc.Increment= 1.333 min Out.Incr.= 5.00 min HYG Volume = 226075 cu.ft HYDROGRAPH ORDINATES (cfs) 44P Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. 480.00 I .00 .00 .02 .03 .05 mm 505.00 I .08 .10 .12 .15 .18 530.00 I .21 .24 .28 .31 .35 555.00 I .38 .41 .43 .46 .49 580.00 I .53 .58 .64 .69 .76 mm 605.00 I .82 .90 .98 1.08 1.18 630.00 I 1.28 1.40 1.53 1.69 1.86 655.00 I 2.05 2.25 2.48 2.79 3.18 680.00 I 3.63 4.11 4.66 6.65 12.03 705.00 I 22.59 39.28 70.53 85.39 65.47 "m 730.00 I 33.02 20.07 15.12 12.50 10.56 755.00 I 9.07 8.04 7.45 7.02 6.62 780.00 I 6.24 5.88 5.59 5.36 5.14 805.00 I 4.93 4.72 4.52 4.35 4.19 WO 830.00 I 4.03 3.88 3.73 3.60 3.49 855.00 I 3.42 3.37 3.31 3.26 3.21 880.00 I 3.16 3.11 3.05 3.00 2.95 905.00 I 2.90 2.85 2.79 2.74 2.68 "'0 930.00 I 2.63 2.58 2.52 2.47 2.41 955.00 I 2.36 2.31 2.26 2.22 2.19 980.00 I 2.17 2.15 2.14 2.12 2.10 1005.00 I 2.08 2.06 2.04 2.02 2.00 mm 1030.00 1.98 1.96 1.95 1.93 1.91 1055.00 I 1.89 1.87 1.85 1.83 1.81 1080.00 I 1.79 1.77 1.75 1.73 1.71 1105.00 1.69 1.67 1.65 1.63 1.62 ,r 1130.00 I 1.59 1.58 1.56 1.54 1.52 1155.00 I 1.50 1.48 1.46 1.44 1.42 1180.00 I 1.40 1.38 1.36 1.34 1.32 1205.00 I 1.30 1.29 1.28 1.28 1.27 MD WM AMU S/N: Bentley Systems, Inc. mm Bentley PondPack (10.00.027.00) 7:57 PM 10/22/2014 um mill Type. . . . Unit Hyd. (HYG output) Page 4.06 Name. . . . PRE DEV FLOWS Tag: Pre 10 Event: 10 yr .r File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PreDev.ppw Storm. . . Typell 24hr Tag: Pre 10 HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min I Time on left represents time for first value in each row. milk 1230.00 1 1.27 1.26 1.26 1.26 1.25 1255.00 I 1.25 1.24 1.24 1.24 1.23 1280.00 I 1.23 1.23 1.22 1.22 1.21 MO. 1305.00 I 1.21 1.21 1.20 1.20 1.20 1330.00 I 1.19 1.19 1.18 1.18 1.18 1355.00 I 1.17 1.17 1.17 1.16 1.16 1380.00 I 1.15 1.15 1.15 1.14 1.14 re 1405.00 I 1.13 1.13 1.13 1.12 1.12 1430.00 1 1.11 1.11 1.11 .81 .28 1455.00 I .08 .02 .01 .00 MO MP ra OM MO OM OM MO WO - MO S/N: Bentley Systems, Inc. um Bentley PondPack (10.00.027.00) 7:57 PM 10/22/2014 .w. .r Appendix A A-1 Index of Starting Page Numbers for ID Names rr rr P PRE DEV FLOWS. . . 2.01, 3.01, 4.01, 4.02, 4.04, 4.05 wr W Watershed. . . 1.01 .r, wr rw MIL .r. rr• rr MO MC, r. am MM S/N: Bentley Systems, Inc. +�. Bentley PondPack (10.00.027.00) 7:57 PM 10/22/2014 Table of Contents i ..r Table of Contents .. ********************** MASTER SUMMARY ********************** Watershed Master Network Summary 1.01 r. ********************** TC CALCULATIONS ********************* ONSITE UNDET. . . . Tc Calcs 2.01 SITE Tc Cabs 2.03 0. ********************** CN CALCULATIONS ********************* rr ONSITE UNDET. . . . Runoff CN-Area 3.01 SITE Runoff CN-Area 3.02 0. *********************** HYG ADDITION **' ******************** OUT 10 2 Node: Addition Summary 4.01 OUT 10 10 Node: Addition Summary 4.04 *********************** POND VOLUMES *********************** �+r LANDFILL POND. . . Vol: Elev-Area 5.01 ®.r ******************** OUTLET STRUCTURES ********************* Outlet 2 Outlet Input Data 6.01 rr ow S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 Table of Contents ii WO O" Table of Contents (continued) Composite Rating Curve 6.05 OM *********************** POND ROOTING *********************** mm LANDFILL PONDOUT 2 Pond Routing Summary 7.01 Pond Routed HYG (total out) 7.02 OW LANDFILL PONDOUT 10 Pond Routing Summary 7.04 Pond Routed HYG (total out) 7.05 aso OIL r rr ra rr rr rr S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 m. .M. Type. . . . Master Network Summary Page 1.01 Name. . . . Watershed Oft File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER MMa MASTER DESIGN STORM SUMMARY mm Network Storm Collection: Albemarle County MMw Total Depth Rainfall Return Event in Type RNF ID ,t 2 3.7000 Synthetic Curve Typell 24hr 10 5.6000 Synthetic Curve Typell 24hr mm MASTER NETWORK SUMMARY SCS Unit Hydrograph Method ON (*Node=Outfall; +Node=Diversion;) (Trun= HYG Truncation: Blank=None; L=Left; R=Rt; LR=Left&Rt) mm Max Return HYG Vol Qpeak Qpeak Max WSEL Pond Storage Node ID Type Event cu.ft Trun min cfs ft cu.ft Mr. LANDFILL PONDIN POND 2 53594 715.00 23.14 LANDFILL PONDIN POND 10 96039 715.00 40.78 LANDFILL PONDOUT POND 2 53594 725.00 11.64 415.90 16166 "m LANDFILL PONDOUT POND 10 96039 720.00 24.20 416.99 25183 ONSITE UNDET AREA 2 77149 720.00 28.94 ONSITE UNDET AREA 10 157163 720.00 59.36 .Mr *OUT 10 JCT 2 130742 720.00 40.23 *OUT 10 JCT 10 253202 720.00 83.56 .. SITE AREA 2 53594 715.00 23.14 SITE AREA 10 96039 715.00 40.78 WS SW NM S/N: Bentley Systems, Inc. — Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 >t aim Type. . . . Tc Calcs Page 2.01 Name. . . . ONSITE UNDET File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER ra TIME OF CONCENTRATION CALCULATOR rr Segment #1: Tc: User Defined Segment #1 Time: 10.00 min Total Tc: 10.00 min ✓r ✓ IMO wr a r S/N: Bentley Systems, Inc. "" Bentley PondPac}- (10.00.027.00) 10:17 PM 10/22/2014 r mm Type. . . . Tc Calcs Page 2.02 Name. . . . ONSITE UNDET mm File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER mm Tc Equations used. . . mm ___= User Defined „n, Tc = Value entered by user Where: Tc = Time of concentration mm mm mm mm ow mm r mm mm mm mm S/N: Bentley Systems, Inc. mm Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 mm rr Type. . . . Tc Calcs Page 2.03 Name. . . . SITE rr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER mw TIME OF CONCENTRATION CALCULATOR mr sr Segment #1: Tc: User Defined Segment #1 Time: 5.00 min Total Tc: 5.00 min Calculated Tc < Min.Tc: Use Minimum Tc. . . Use Tc = 5.00 min MOM riw rr IOW OM MW Oft am r. S/N: Bentley Systems, Inc. �+ Bentley PondPac}_ (10.00.027.00) 10:17 PM 10/22/2014 ow Type. . . . Tc Calcs Page 2.04 Name. . . . SITE File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER Tc Equations used. . . ___= User Defined .r Tc = Value entered by user Where: Tc = Time of concentration r ow ow r r wr wr r .r Oro rr S/N: Bentley Systems, Inc. "® Bentley PondPaok (10.00.027.00) 10:17 PM 10/22/2014 S Type. . . . Runoff CN-Area Page 3.01 Name. . . . ONSITE UNDET wo File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER or. RUNOFF CURVE NUMBER DATA rimm Impervious Area Adjustment Adjusted Soil/Surface Description CN acres %C %UC CN Impervious Areas - Paved parking to 98 .410 98.00 mg. Woods - good 77 12.360 77.00 Woods - good 55 1.940 55.00 COMPOSITE AREA & WEIGHTED CN ---> 14.710 74.68 (75) 111110 Via NW UMW SIM S/N: Bentley Systems, Inc. 4111. Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 Type. . . . Runoff CN-Area Page 3.02 Name. . . . SITE File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER 401I RUNOFF CURVE NUMBER DATA Impervious INN Area Adjustment Adjusted Soil/Surface Description CN acres IC %UC CN Open space (Lawns,parks etc.) - Goo 80 4.300 80.00 Impervious Areas - Paved parking to 98 1.650 98.00 Impervious Areas - Paved parking lo 98 .300 98.00 Woods - good 77 .500 77.00 01. COMPOSITE AREA & WEIGHTED CN ---> 6.750 84.98 (85) 11.0 ftle INV NMI OW S S/N: Bentley Systems, Inc. m. Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 os Type. . . . Node: Addition Summary Page 4.01 Name. . . . OUT 10 Event: 2 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER Storm. . . Typell 24hr Tag: 2 ..w SUMMARY FOR HYDROGRAPH ADDITION at Node: OUT 10 HYG Directory: H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\ Upstream Link ID Upstream Node ID HYG file HYG ID HYG tag ow ROUTE 10 LANDFILL PONDIN ROUTE 10 2 ADDLINK 50 ONSITE UNDET ONSITE UNDET 2 ms INFLOWS TO: OUT 10 Volume Peak Time Peak Flow rw HYG file HYG ID HYG tag cu.ft min cfs ROUTE 10 2 53593 725.00 11.64 ONSITE UNDET 2 77149 720.00 28.94 rr TOTAL FLOW INTO: OUT 10 Volume Peak Time Peak Flow HYG file HYG ID HYG tag cu.ft min cfs ow OUT 10 2 130742 720.00 40.23 MS Ole rr wr ww ww S/N: Bentley Systems, Inc. '. Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 IMP Type. . . . Node: Addition Summary Page 4.02 Name. . . . OUT 10 Event: 2 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER r Storm. . . TypeII 24hr Tag: 2 mm TOTAL NODE INFLOW. . . HYG file = WO HYG ID = OUT 10 HYG Tag = 2 Peak Discharge = 40.23 cfs mm Time to Peak = 720.00 min HYG Volume = 130742 cu.ft yr HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. .. 415.00 .00 .00 .01 .01 .01 440.00 .02 .02 .02 .03 .03 465.00 .04 .04 .04 .05 .05 490.00 I .06 .06 .06 .07 .07 515.00 I .08 .08 .08 .09 .09 on 540.00 I .10 .10 .10 .11 .11 565.00 I .11 .12 .12 .12 .12 590.00 .13 .13 .13 .14 .15 615.00 .17 .20 .22 .25 .28 ""` 640.00 I .32 .36 .40 .46 .52 665.00 I .58 .67 .77 .90 1.04 690.00 I 1.20 1.72 3.17 6.42 16.59 715.00 I 31.53 40.23 34.62 22.45 16.59 •" 740.00 I 13.39 10.94 8.71 6.94 5.76 765.00 5.05 4.58 4.22 3.93 3.67 790.00 3.47 3.31 3.17 3.04 2.91 815.00 2.78 2.67 2.57 2.48 2.39 Ili 840.00 I 2.30 2.21 2.15 2.10 2.07 865.00 I 2.03 2.00 1.97 1.94 1.91 890.00 I 1.87 1.84 1.81 1.78 1.75 915.00 I 1.71 1.68 1.65 1.62 1.59 mm 940.00 I 1.55 1.52 1.49 1.46 1.42 965.00 I 1.39 1.37 1.35 1.34 1.33 990.00 1.31 1.30 1.29 1.28 1.27 1015.00 1.26 1.24 1.23 1.22 1.21 MI 1040.00 I 1.20 1.19 1.18 1.16 1.15 1065.00 1.14 1.13 1.12 1.11 1.09 1090.00 I 1.08 1.07 1.06 1.05 1.03 1115.00 I 1.02 1.01 1.00 .99 .97 mm 1140.00 I .96 .95 .94 .93 .91 1165.00 I .90 .89 .88 .86 .85 r um w S/N: Bentley Systems, Inc. mm Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 am u. Type. . . . Node: Addition Summary Page 4.03 Name. . . . OUT 10 Event: 2 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER AM Storm. . . TypeIl 24hr Tag: 2 um HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min Time on left represents time for first value in each row. 0. 1190.00 I .84 .83 .82 .80 .80 1215.00 I .79 .79 .79 .78 .78 1240.00 I .78 .78 .77 .77 .77 .. 1265.00 I .77 .77 .76 .76 .76 1290.00 I .76 .75 .75 .75 .75 1315.00 I .74 .74 .74 .74 .74 1340.00 .73 .73 .73 .73 .72 1.. 1365.00 .72 .72 .72 .71 .71 1390.00 .71 .71 .71 .70 .70 1415.00 .70 .70 .69 .69 .69 1440.00 I .69 .54 .32 .25 .22 or 1465.00 I .22 .21 .21 .21 .21 1490.00 I .21 .21 .21 .21 .21 1515.00 I .21 .21 .21 .21 .21 1540.00 I .21 .21 .21 .21 .21 1565.00 I .21 .20 .20 .20 .20 `r 1590.00 .20 .20 .20 .20 .20 1615.00 ( .20 .20 .20 .20 .20 1640.00 ( .20 .20 .20 .20 .20 1665.00 .20 .20 .19 .19 .19 "m 1690.00 .19 .19 .19 .19 .19 1715.00 I .19 .19 .19 .19 .19 1740.00 I .19 .19 .19 .19 .19 1765.00 I .19 .18 .18 .18 .18 am 1790.00 I .18 .18 .18 .18 .18 1815.00 I .18 .18 .18 .17 .17 1840.00 I .17 .17 .17 .17 .17 1865.00 I .17 .17 .17 .16 .16 No 1890.00 I .16 .16 .16 .16 .16 1915.00 .15 .15 .15 .15 .15 1940.00 .15 .15 .15 .14 .14 1965.00 I .14 .14 .13 .13 .13 l+ 1990.00 .12 .12 .12 .11 .11 2015.00 .10 .09 .08 .06 .02 2040.00 .00 OW WM r NM GM S/N: Bentley Systems, Inc. +. Bentley PondPaclk (10.00.027.00) 10:17 PM 10/22/2014 .r. Type. . . . Node: Addition Summary Page 4.04 Name. . . . OUT 10 Event: 10 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER m. Storm. . . Typell 24hr Tag: 10 MO SUMMARY FOR HYDROGRAPH ADDITION at Node: OUT 10 HYG Directory: H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\ Upstream Link ID Upstream Node ID HYG file HYG ID HYG tag ROUTE 10 LANDFILL PONDIN ROUTE 10 10 ADDLINK 50 ONSITE UNDET ONSITE UNDET 10 r INFLOWS TO: OUT 10 Volume Peak Time Peak Flow tor HYG file HYG ID HYG tag cu.ft min cfs ROUTE 10 10 96039 720.00 24.20 ONSITE UNDET 10 157163 720.00 59.36 rw TOTAL FLOW INTO: OUT 10 Volume Peak Time Peak Flow sum HYG file HYG ID HYG tag cu.ft min cfs OUT 10 10 253202 720.00 83.56 or ass WW MP AIM MW MP S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 ft. w. Type. . . . Node: Addition Summary Page 4.05 Name. . . . OUT 10 Event: 10 yr ,w File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER Storm. . . Typell 24hr Tag: 10 ow TOTAL NODE INFLOW. . . HYG file = +r. HYG ID = OUT 10 HYG Tag = 10 Peak Discharge = 83.56 cfs ++r Time to Peak = 720.00 min HYG Volume = 253202 cu.ft wr HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min I Time on left represents time for first value in each row. milli 305.00 I .00 .00 .01 .01 .02 330.00 I .03 .03 .04 .04 .05 355.00 I .05 .06 .06 .06 .07 380.00 I .07 .08 .08 .08 .09 or 405.00 I .09 .09 .10 .10 .10 430.00 I .11 .11 .11 .11 .12 455.00 I .12 .12 .12 .13 .13 480.00 I .13 .14 .15 .16 .18 mr 505.00 .19 .21 .23 .25 .28 530.00 .30 .32 .35 .38 .40 555.00 .43 .45 .47 .49 .52 580.00 .55 .58 .62 .66 .71 605.00 .76 .81 .87 .94 1.01 "r 630.00 I 1.08 1.17 1.26 1.38 1.50 655.00 I 1.63 1.77 1.94 2.15 3.11 680.00 I 4.02 4.77 5.49 7.66 13.35 705.00 I 23.35 37.73 64.86 83.56 69.22 "r'' 730.00 I 40.99 27.69 22.21 19.19 16.56 755.00 I 14.11 11.95 10.17 8.85 7.91 780.00 I 7.19 6.63 6.20 5.88 5.61 805.00 I 5.37 5.13 4.90 4.70 4.52 o" 830.00 4.35 4.19 4.02 3.88 3.76 855.00 3.67 3.61 3.55 3.49 3.43 880.00 3.37 3.32 3.26 3.21 3.15 905.00 3.09 3.04 2.98 2.92 2.87 - 930.00 2.81 2.75 2.69 2.64 2.58 955.00 I 2.52 2.46 2.41 2.37 2.34 980.00 2.31 2.29 2.27 2.25 2.23 1005.00 I 2.21 2.19 2.17 2.15 2.13 r 1030.00 I 2.11 2.08 2.07 2.04 2.02 1055.00 I 2.00 1.98 1.96 1.94 1.92 OW IOW w S/N: Bentley Systems, Inc. tra Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 w IMP Type. . . . Node: Addition Summary Page 4.06 Name. . . . OUT 10 Event: 10 yr um File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER Storm. . . Typell 24hr Tag: 10 rrr HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min Time on left represents time for first value in each row. 1080.00 1.90 1.88 1.86 1.84 1.82 1105.00 1.80 1.77 1.75 1.73 1.71 1130.00 1.69 1.67 1.65 1.63 1.61 +im 1155.00 1.58 1.56 1.54 1.52 1.50 1180.00 1.48 1.46 1.44 1.42 1.39 1205.00 1.37 1.36 1.35 1.35 1.34 1230.00 1.34 1.33 1.33 1.33 1.32 OM 1255.00 1.32 1.31 1.31 1.31 1.30 1280.00 I 1.30 1.29 1.29 1.29 1.28 1305.00 1.28 1.27 1.27 1.26 1.26 1330.00 1.26 1.25 1.25 1.24 1.24 ill 1355.00 1.24 1.23 1.23 1.22 1.22 1380.00 1.22 1.21 1.21 1.20 1.20 1405.00 I 1.19 1.19 1.19 1.18 1.18 1430.00 1.17 1.17 1.17 .89 .41 or 1455.00 .27 .23 .22 .21 .21 1480.00 .21 .21 .21 .21 .21 1505.00 I .21 .21 .21 .21 .21 1530.00 .21 .21 .21 .21 .21 rr 1555.00 I .21 .21 .21 .21 .20 1580.00 .20 .20 .20 .20 .20 1605.00 .20 .20 .20 .20 .20 1630.00 I .20 .20 .20 .20 .20 1655.00 .20 .20 .20 .20 .20 w w 1680.00 .19 .19 .19 .19 .19 1705.00 .19 .19 .19 .19 .19 1730.00 I .19 .19 .19 .19 .19 1755.00 .19 .19 .19 .19 .18 ow 1780.00 .18 .18 .18 .18 .18 1805.00 I .18 .18 .18 .18 .18 1830.00 I .18 .17 .17 .17 .17 1855.00 I .17 .17 .17 .17 .17 we 1880.00 .16 .16 .16 .16 .16 1905.00 I .16 .16 .16 .15 .15 1930.00 I .15 .15 .15 .15 .15 1955.00 .15 .14 .14 .14 .14 r 1980.00 .13 .13 .13 .12 .12 2005.00 I .12 .11 .11 .10 .09 2030.00 I .08 .06 .01 .00 or 0. Nee WM S/N: Bentley Systems, Inc. "' Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 map Type. . . . Vol: Elev-Area Page 5.01 Name. . . . LANDFILL POND r File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER Elevation Planimeter Area Al+A2+sgr(Al*A2) Volume Volume Sum (ft) (sq.in) (sq.ft) (sq.ft) (cu.ft) (cu.ft) or 410.00 5 0 0 0 412.00 820 889 593 593 414.00 4230 6912 4608 5201 .rr 416.00 7620 17527 11685 16886 418.00 11060 27860 18574 35459 419.00 13100 36197 12066 47525 Elevations With Areas Interpolated From The Closest Two Planimeter Readings r Elevation Planimeter Area Al+A2+sqr(Al*A2) Volume Volume Sum (ft) (sq.in) (sq.ft) (sq.ft) (cu.ft) (cu.ft) 414.25 4600 13241 1103 6304 POND VOLUME EQUATIONS .rr * Incremental volume computed by the Conic Method for Reservoir Volumes. Volume = (1/3) * (EL2-EL1) * (Areal + Area2 + sq.rt. (Areal*Area2) ) where: EL1, EL2 = Lower and upper elevations of the increment `w` Areal,Area2 = Areas computed for EL1, EL2, respectively Volume = Incremental volume between EL1 and EL2 Interpolated area from closest two given contour areas "" is computed using the relationship: IA = (sq.rt(Areal) + ( (Ei-E1) / (E2-E1) ) * (sq.rt(Area2)-sq.rt(Areal) ) ) **2 MP where: El, E2 = Closest two elevations with planimeter data Ei = Elevation at which to interpolate area Areal,Area2 = Areas computed for El, E2, respectively IA = Interpolated area for Ei r War S/N: Bentley Systems, Inc. ww Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 m. Type. . . . Outlet Input Data Page 6.01 Name. . . . Outlet 2 rr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER REQUESTED POND WS ELEVATIONS: .�. Min. Elev.= 410.00 ft Increment = .10 ft Max. Elev.= 419.00 ft or ****************************-k************k**** OUTLET CONNECTIVITY ********************************************** ---> Forward Flow Only (UpStream to DnStream) <--- Reverse Flow Only (DnStream to Upstream) <---> Forward and Reverse Both Allowed or Structure No. Outfall El, ft E2, ft Orifice-Area 00 ---> CO 414.250 419.000 Weir-Rectangular WO ---> CO 416.000 419.000 as Inlet Box RO ---> CO 417.000 419.000 Orifice-Circular 01 ---> CO 410.000 419.000 Culvert-Circular CO ---> TW 409.000 419.000 TW SETUP, DS Channel r mop an wr wr *WO S/N: Bentley Systems, Inc. ... Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 ma Type. . . . Outlet Input Data Page 6.02 Name. . . . Outlet 2 File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER OUTLET STRUCTURE INPUT DATA Structure ID = 00 Structure Type = Orifice-Area # of Openings = 1 Invert Elev. = 414.25 ft Area = 2.0000 sq.ft ,w Top of Orifice = 414.75 ft Datum Elev. = 414.50 ft Orifice Coeff. _ .600 n. Structure ID = WO Structure Type = Weir-Rectangular NM # of Openings = 1 Crest Elev. = 416.00 ft Weir Length = 3.00 ft Weir Coeff. = 3.000000 Weir TW effects (Use adjustment equation) +ur r S err Ole S/N: Bentley Systems, Inc. .to Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 m. Type. . . . Outlet Input Data Page 6.03 Name. . . . Outlet 2 mm File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER INK OUTLET STRUCTURE INPUT DATA r Structure ID = RO Structure Type = Inlet Box rr # of Openings = 1 Invert Elev. = 417.00 ft Orifice Area = 16.0000 sq.ft Orifice Coeff. _ .600 ,.,. Weir Length = 16.00 ft Weir Coeff. = 3.000 K, Reverse = 1.000 Mannings n = .0000 Kev,Charged Riser = .000 Weir Submergence = No a Structure ID = 01 Structure Type = Orifice-Circular # of Openings = 1 mm Invert Elev. = 410.00 ft Diameter = 2.00 in Orifice Coeff. _ .600 a WO SIP w a .. S/N: Bentley Systems, Inc. "' Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 mm um Type. . . . Outlet Input Data Page 6.04 Name. . . . Outlet 2 rr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER .. OUTLET STRUCTURE INPUT DATA Structure ID = CO Structure Type = Culvert-Circular mow No. Barrels = 1 Barrel Diameter = 24.00 in Upstream Invert = 409.00 ft Dnstream Invert = 408.48 ft n.,, Horiz. Length = 103.66 ft Barrel Length = 103.66 ft Barrel Slope = .00502 ft/ft OUTLET CONTROL DATA. . . Mannings n = .0130 Ke = .5000 (forward entrance loss) Kb = .012411 (per ft of full flow) Kr = .5000 (reverse entrance loss) dis HW Convergence = .001 +/- ft INLET CONTROL DATA. . . Equation form = 1 Inlet Control K = .0098 Inlet Control M = 2.0000 Inlet Control c = .03980 Inlet Control Y = .6700 Ti ratio (HW/D) = 1.158 T2 ratio (HW/D) = 1.304 Slope Factor = -.500 11111 Use unsubmerged inlet control Form 1 equ. below Ti elev. Use submerged inlet control Form 1 equ. above T2 elev. In transition zone between unsubnerged and submerged inlet control, — interpolate between flows at Ti & T2. . . At Tl Elev = 411.32 ft ---> Flow = 15.55 cfs At T2 Elev = 411.61 ft ---> Flow = 17.77 cfs S Structure ID = TW Structure Type = TW SETUP, DS Channel FREE OUTFALL CONDITIONS SPECIFIED CONVERGENCE TOLERANCES. . . �r Maximum Iterations= 40 Min. TW tolerance = .01 ft Max. TW tolerance = .01 ft Min. HW tolerance = .01 ft Max. HW tolerance = .01 ft Min. Q tolerance = .00 cfs Max. Q tolerance = .00 cfs S/N: Bentley Systems, Inc. mot Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 NW Type. . . . Composite Rating Curve Page 6.05 Name. . . . Outlet 2 mm File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER rr ***** COMPOSITE OUTFLOW SUMMARY **** w WS Elev, Total Q Notes Converge Elev. Q TW Elev Error ft cfs ft +/-ft Contributing Structures mm 410.00 .00 Free Outfall (no Q: O0,WO,R0,O1,C0) 410.10 .01 Free Outfall O1,C0 (no Q: O0,W0,R0) 410.20 .04 Free Outfall O1,C0 (no Q: O0,W0,R0) ,I, 410.30 .05 Free Outfall O1,C0 (no Q: O0,WO,R0) 410.40 .06 Free Outfall O1,C0 (no Q: O0,WO,R0) 410.50 .07 Free Outfall O1,C0 (no Q: O0,WO,R0) 410.60 .08 Free Outfall O1,C0 (no Q: O0,W0,R0) ,w 410.70 .08 Free Outfall O1,C0 (no Q: O0,W0,R0) 410.80 .09 Free Outfall O1,C0 (no Q: OO,W0,R0) 410.90 .10 Free Outfall Ol,C0 (no Q: O0,W0,R0) 411.00 .10 Free Outfall O1,C0 (no Q: O0,W0,R0) mom 411.10 .11 Free Outfall O1,C0 (no Q: O0,WO,R0) 411.20 .11 Free Outfall O1,C0 (no Q: 00,W0,R0) 411.30 .12 Free Outfall O1,C0 (no Q: 00,W0,R0) 411.40 .12 Free Outfall O1,C0 (no Q: O0,W0,R0) 411.50 .13 Free Outfall O1,C0 (no Q: OO,W0,R0) mm 411.60 .13 Free Outfall O1,C0 (no Q: O0,W0,R0) 411.70 .13 Free Outfall O1,C0 (no Q: O0,W0,R0) 411.80 .14 Free Outfall O1,C0 (no Q: O0,W0,R0) 411.90 .14 Free Outfall O1,C0 (no Q: O0,W0,R0) 412.00 .15 Free Outfall O1,C0 (no Q: O0,W0,R0) 412.10 .15 Free Outfall O1,C0 (no Q: O0,W0,R0) 412.20 .15 Free Outfall O1,C0 (no Q: O0,W0,R0) 412.30 .15 Free Outfall O1,C0 (no Q: O0,W0,R0) ""' 412.40 .16 Free Outfall O1,C0 (no Q: 00,W0,R0) 412.50 .16 Free Outfall O1,C0 (no Q: 00,W0,R0) 412.60 .17 Free Outfall Ol,C0 (no Q: O0,W0,R0) 412.70 .17 Free Outfall O1,C0 (no Q: O0,WO,R0) "r 412.80 .17 Free Outfall O1,C0 (no Q: O0,WO,R0) 412.90 .18 Free Outfall O1,C0 (no Q: O0,WO,R0) 413.00 .18 Free Outfall Ol,C0 (no Q: O0,W0,R0) 413.10 .18 Free Outfall O1,C0 (no Q: O0,WO,R0) .r 413.20 .19 Free Outfall O1,C0 (no Q: O0,WO,R0) 413.30 .19 Free Outfall Ol,C0 (no Q: O0,WO,R0) 413.40 .19 Free Outfall O1,C0 (no Q: 00,W0,R0) 413.50 .19 Free Outfall Ol,C0 (no Q: O0,W0,R0) m,,, 413.60 .20 Free Outfall O1,C0 (no Q: O0,W0,R0) 413.70 .20 Free Outfall O1,C0 (no Q: O0,W0,R0) mm mm .r S/N: Bentley Systems, Inc. mm Bentley PondPac}: (10.00.027.00) 10:17 PM 10/22/2014 .r Type. . . . Composite Rating Curve Page 6.06 Name. . . . Outlet 2 am File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER a ***** COMPOSITE OUTFLOW SUMMARY **** WS Elev, Total Q Notes Converge Elev. Q TW Elev Error ft cfs ft +/-ft Contributing Structures a 413.80 .20 Free Outfall Ol,C0 (no Q: 00,W0,R0) 413.90 .21 Free Outfall O1,C0 (no Q: 00,W0,R0) 414.00 .21 Free Outfall O1,C0 (no Q: O0,W0,R0) ,,,,, 414.10 .21 Free Outfall O1,C0 (no Q: O0,W0,R0) 414.20 .21 Free Outfall Ol,C0 (no Q: 00,WO,R0) 414.25 .21 Free Outfall Ol,C0 (no Q: 00,W0,R0) 414.30 .70 Free Outfall 00,O1,C0 (no Q: W0,R0) 414.40 1.66 Free Outfall 00,O1,C0 (no Q: W0,R0) 414.50 2.63 Free Outfall O0,O1,C0 (no Q: W0,R0) 414.60 3.59 Free Outfall 00,Ol,C0 (no Q: W0,R0) 414.70 4.56 Free Outfall O0,O1,C0 (no Q: W0,R0) ,.r 414.80 5.49 Free Outfall O0,O1,C0 (no Q: W0,R0) 414.90 6.31 Free Outfall OO,Ol,C0 (no Q: W0,R0) 415.00 7.03 Free Outfall O0,O1,C0 (no Q: WO,RO) 415.10 7.68 Free Outfall 00,O1,C0 (no Q: WO,R0) 415.20 8.28 Free Outfall O0,O1,C0 (no Q: W0,R0) ma 415.30 8.83 Free Outfall 0O,O1,C0 (no Q: W0,R0) 415.40 9.36 Free Outfall 0O,O1,C0 (no Q: W0,R0) 415.50 9.85 Free Outfall O0,Ol,C0 (no Q: W0,R0) 415.60 10.29 Free Outfall O0,Ol,C0 (no Q: W0,R0) 415.70 10.77 Free Outfall 00,O1,C0 (no Q: W0,R0) 415.80 11.21 Free Outfall 0O,O1,C0 (no Q: W0,R0) 415.90 11.62 Free Outfall O0,O1,C0 (no Q: W0,R0) 416.00 12.02 Free Outfall O0,Ol,C0 (no Q: W0,R0) "r"' 416.10 12.69 Free Outfall O0,W0,O1,C0 (no Q: RO) 416.20 13.58 Free Outfall O0,W0,O1,C0 (no Q: RO) 416.30 14.62 Free Outfall 00,W0,O1,C0 (no Q: RO) 416.40 15.77 Free Outfall 00,W0,O1,C0 (no Q: RO) am 416.50 17.01 Free Outfall O0,W0,O1,C0 (no Q: RO) 416.60 18.35 Free Outfall O0,W0,O1,C0 (no Q: RO) 416.70 19.77 Free Outfall 00,W0,Ol,C0 (no Q: RO) 416.80 21.24 Free Outfall 00,W0,O1,C0 (no Q: RO) a 416.90 22.81 Free Outfall O0,W0,O1,C0 (no Q: RO) 417.00 24.43 Free Outfall 00,W0,01,C0 (no Q: RO) 417.10 27.60 Free Outfall 00,W0,R0,01,C0 417.20 31.36 Free Outfall O0,W0,R0,Ol,C0 u� 417.30 34.08 Free Outfall O0,W0,R0,O1,C0 417.40 36.55 Free Outfall 00,W0,R0,O1,C0 mm a a S/N: Bentley Systems, Inc. "' Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 mm Type. . . . Composite Rating Curve Page 6.07 Name. . . . Outlet 2 mm File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER mm ***** COMPOSITE OUTFLOW SUMMARY **** .,. WS Elev, Total Q Notes Converge Elev. Q TW Elev Error ft cfs ft +/-ft Contributing Structures mm 417.50 38.16 Free Outfall O0,W0,R0,O1,C0 417.60 39.37 Free Outfall O0,W0,R0,O1,C0 417.70 40.25 Free Outfall O0,WO,R0,01,C0 MIN 417.80 40.81 Free Outfall O0,WO,R0,O1,C0 417.90 41.16 Free Outfall R0,C0 (no Q: O0,W0,Ol) 418.00 41.44 Free Outfall R0,C0 (no Q: O0,W0,O1) 418.10 41.71 Free Outfall R0,C0 (no Q: O0,W0,O1) MM 418.20 41.98 Free Outfall R0,C0 (no Q: OO,W0,O1) 418.30 42.25 Free Outfall R0,C0 (no Q: O0,W0,O1) 418.40 42.52 Free Outfall R0,C0 (no Q: O0,W0,O1) 418.50 42.79 Free Outfall R0,C0 (no Q: O0,W0,O1) 418.60 43.05 Free Outfall RO,C0 (no Q: O0,W0,O1) m" 418.70 43.31 Free Outfall RO,C0 (no Q: O0,W0,O1) 418.80 43.57 Free Outfall RO,C0 (no Q: O0,W0,O1) 418.90 43.83 Free Outfall RO,C0 (no Q: O0,W0,O1) 419.00 44.09 Free Outfall RO,C0 (no Q: O0,W0,O1) mm r mm mm mm S S S/N: Bentley Systems, Inc. +r. Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 .. mm Type. . . . Pond Routing Summary Page 7.01 Name. . . . LANDFILL PONDOUT Tag: 2 Event: 2 yr File. . . . H:\l2\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER MIN Storm. . . Typell 24hr Tag: 2 ppm LEVEL POOL ROUTING SUMMARY HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\ .,. Inflow HYG file = NONE STORED - LANDFILL PONDIN 2 Outflow HYG file = NONE STORED - LANDFILL PONDOUT 2 Pond Node Data = LANDFILL POND MIN Pond Volume Data = LANDFILL POND Pond Outlet Data = Outlet 2 No Infiltration S INITIAL CONDITIONS Starting WS Elev = 410.00 ft Starting Volume = 0 cu.ft nr Starting Outflow = .00 cfs Starting Infiltr. _ .00 cfs Starting Total Qout= .00 cfs Time Increment = 5.00 min mm INFLOW/OUTFLOW HYDROGRAPH SUMMARY "" Peak Inflow = 23.14 cfs at 715.00 min Peak Outflow = 11.64 cfs at 725.00 min Peak Elevation = 415.90 ft r Peak Storage = 16166 cu.ft mm MASS BALANCE (cu.ft) + Initial Vol = 0 + HYG Vol IN = 53594 w - Infiltration = 0 - HYG Vol OUT = 53594 - Retained Vol = 0 ..,, Unrouted Vol = 0 cu.ft (.000% of Outflow Volume) mom r r .f. S/N: Bentley Systems, Inc. +.+ Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 mm or Type. . . . Pond Routed HYG (total out) Page 7.02 Name. . . . LANDFILL PONDOUT Tag: 2 Event: 2 yr wm File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER Storm. . . Typell 24hr Tag: 2 w POND ROUTED TOTAL OUTFLOW HYG. . . HYG file = u+ HYG ID = LANDFILL PONDOUT HYG Tag = 2 Peak Discharge = 11.64 cfs we Time to Peak = 725.00 min HYG Volume = 53594 cu.ft wir HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. ..r 410.00 I .00 .00 .00 .01 .01 435.00 I .01 .02 .02 .02 .03 460.00 I .03 .04 .04 .04 .05 485.00 I .05 .06 .06 .06 .07 iris 510.00 I .07 .08 .08 .08 .09 535.00 I .09 .10 .10 .10 .11 560.00 I .11 .11 .12 .12 .12 585.00 .12 .13 .13 .13 .14 610.00 .14 .14 .14 .15 .15 rw 635.00 .15 .15 .16 .16 .16 660.00 .17 .17 .17 .18 .18 685.00 .19 .19 .19 .20 .38 710.00 I 5.11 9.02 11.30 11.64 10.67 "" 735.00 I 9.31 7.84 6.32 4.78 3.56 760.00 I 2.76 2.25 1.94 1.73 1.57 785.00 I 1.45 1.35 1.28 1.22 1.16 810.00 I 1.11 1.06 1.02 .98 .94 or 835.00 I .91 .87 .84 .81 .79 860.00 I .77 .76 .75 .73 .72 885.00 I .71 .70 .68 .67 .66 910.00 .65 .63 .62 .61 .60 'm 935.00 .59 .57 .56 .55 .54 960.00 .53 .51 .50 .50 .49 985.00 .49 .48 .48 .47 .47 1010.00 .46 .46 .46 .45 .45 r 1035.00 I .44 .44 .43 .43 .42 1060.00 I .42 .42 .41 .41 .40 1085.00 .40 .39 .39 .39 .38 1110.00 .38 .37 .37 .36 .36 4111. 1135.00 .35 .35 .35 .34 .34 1160.00 I .33 .33 .32 .32 .31 am MO wr. S/N: Bentley Systems, Inc. ow Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 w. NMI Type. . . . Pond Routed HYG (total out) Page 7.03 Name. . . . LANDFILL PONDOUT Tag: 2 Event: 2 yr ow File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER Storm. . . Typell 24hr Tag: 2 splw HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. r 1185.00 I .31 .31 .30 .30 .29 1210.00 I .29 .29 .29 .28 .28 1235.00 I .28 .28 .28 .28 .28 +. 1260.00 I .28 .28 .28 .27 .27 1285.00 I .27 .27 .27 .27 .27 1310.00 I .27 .27 .27 .27 .27 1335.00 I .26 .26 .26 .26 .26 or 1360.00 I .26 .26 .26 .26 .26 1385.00 I .26 .25 .25 .25 .25 1410.00 I .25 .25 .25 .25 .25 1435.00 .25 .25 .21 .21 .21 r 1460.00 I .21 .21 .21 .21 .21 1485.00 I .21 .21 .21 .21 .21 1510.00 I .21 .21 .21 .21 .21 1535.00 .21 .21 .21 .21 .21 UM 1560.00 .21 .21 .20 .20 .20 1585.00 .20 .20 .20 .20 .20 1610.00 I .20 .20 .20 .20 .20 1635.00 .20 .20 .20 .20 .20 1660.00 I .20 .20 .20 .19 .19 ma 1685.00 .19 .19 .19 .19 .19 1710.00 I .19 .19 .19 .19 .19 1735.00 .19 .19 .19 .19 .19 1760.00 .19 .19 .18 .18 .18 ow 1785.00 I .18 .18 .18 .18 .18 1810.00 I .18 .18 .18 .18 .17 1835.00 I .17 .17 .17 .17 .17 1860.00 I .17 .17 .17 .17 .16 "" 1885.00 .16 .16 .16 .16 .16 1910.00 I .16 .15 .15 .15 .15 1935.00 I .15 .15 .15 .15 .14 1960.00 I .14 .14 .14 .13 .13 ""' 1985.00 I .13 .12 .12 .12 .11 2010.00 I .11 .10 .09 .08 .06 2035.00 I .02 .00 i Mil SIM Oft 11rP S/N: Bentley Systems, Inc. ''r"' Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 r Type. . . . Pond Routing Summary Page 7.04 Name. . . . LANDFILL PONDOUT Tag: 10 Event: 10 yr r File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER Storm. . . Typell 24hr Tag: 10 our LEVEL POOL ROUTING SUMMARY HYG Dir = H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\ ww Inflow HYG file = NONE STORED - LANDFILL PONDIN 10 Outflow HYG file = NONE STORED - LANDFILL PONDOUT 10 Pond Node Data = LANDFILL POND Pond Volume Data = LANDFILL POND Pond Outlet Data = Outlet 2 No Infiltration r INITIAL CONDITIONS Starting WS Elev = 410.00 ft u,,, Starting Volume = 0 cu.ft Starting Outflow = .00 cfs Starting Infiltr. _ .00 cfs Starting Total Qout= .00 cfs rrr Time Increment = 5.00 min INFLOW/OUTFLOW HYDROGRAPH SUMMARY rr Peak Inflow = 40.78 cfs at 715.00 min Peak Outflow = 24.20 cfs at 720.00 min Peak Elevation = 416.99 ft Peak Storage = 25183 cu.ft MASS BALANCE (cu.ft) + Initial Vol = 0 + HYG Vol IN = 96039 - Infiltration = 0 - HYG Vol OUT = 96039 - Retained Vol = 0 arr Unrouted Vol = 0 cu.ft (.000% of Outflow Volume) rrr are S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 am Type. . . . Pond Routed HYG (total out) Page 7.05 Name. . . . LANDFILL PONDOUT Tag: 10 Event: 10 yr as. File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER Storm. . . Typell 24hr Tag: 10 a. POND ROUTED TOTAL OUTFLOW HYG. . . HYG file = 'e' HYG ID = LANDFILL PONDOUT HYG Tag = 10 Peak Discharge = 24.20 cfs +r Time to Peak = 720.00 min HYG Volume = 96039 cu.ft am HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. ,,,w 300.00 I .00 .00 .00 .01 .01 325.00 I .02 .03 .03 .04 .04 350.00 .05 .05 .06 .06 .06 375.00 .07 .07 .08 .08 .08 400.00 I .09 .09 .09 .10 .10 am 425.00 I .10 .11 .11 .11 .11 450.00 I .12 .12 .12 .12 .13 475.00 I .13 .13 .13 .14 .14 500.00 I .14 .14 .15 .15 .15 .r 525.00 I .15 .15 .16 .16 .16 550.00 I .16 .16 .17 .17 .17 575.00 I .17 .18 .18 .18 .18 600.00 I .18 .19 .19 .19 .19 as 625.00 .19 .19 .20 .20 .20 650.00 I .20 .21 .21 .21 .21 675.00 I .90 1.50 1.91 2.25 3.04 700.00 4.99 7.65 10.42 15.83 24.20 5 725.00 23.71 18.04 13.74 11.70 10.50 750.00 I 9.22 7.80 6.35 4.99 3.97 775.00 3.31 2.86 2.54 2.32 2.16 800.00 I 2.04 1.94 1.85 1.76 1.68 s" 825.00 I 1.61 1.55 1.49 1.43 1.38 850.00 I 1.33 1.29 1.27 1.24 1.22 875.00 I 1.20 1.18 1.16 1.14 1.12 900.00 I 1.10 1.08 1.06 1.04 1.02 r 925.00 I 1.00 .98 .96 .94 .92 950.00 I .90 .88 .86 .84 .82 975.00 .81 .80 .79 .78 .78 1000.00 .77 .76 .75 .75 .74 rr 1025.00 .73 .73 .72 .71 .70 1050.00 I .70 .69 .68 .68 .67 w .. S S/N: Bentley Systems, Inc. am Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 .. sus Type. . . . Pond Routed HYG (total out) Page 7.06 Name. . . . LANDFILL PONDOUT Tag: 10 Event: 10 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\LF-PostDevl-OVER us, Storm. . . Typell 24hr Tag: 10 ar HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. ++ I 1075.00 I .66 .65 .65 .64 .63 1100.00 I .62 .62 .61 .60 .60 1125.00 I .59 .58 .57 .57 .56 as„ 1150.00 I .55 .54 .54 .53 .52 1175.00 I .52 .51 .50 .49 .49 1200.00 I .48 .47 .47 .46 .46 1225.00 .46 .46 .46 .45 .45 eft 1250.00 .45 .45 .45 .45 .45 1275.00 .44 .44 .44 .44 .44 1300.00 .44 .44 .43 .43 .43 1325.00 .43 .43 .43 .43 .42 it 1350.00 .42 .42 .42 .42 .42 1375.00 I .42 .41 .41 .41 .41 1400.00 I .41 .41 .40 .40 .40 1425.00 .40 .40 .40 .40 .32 1450.00 I .21 .21 .21 .21 .21 ow 1475.00 I .21 .21 .21 .21 .21 1500.00 I .21 .21 .21 .21 .21 1525.00 I .21 .21 .21 .21 .21 1550.00 I .21 .21 .21 .21 .21 ass 1575.00 I .20 .20 .20 .20 .20 1600.00 I .20 .20 .20 .20 .20 1625.00 I .20 .20 .20 .20 .20 1650.00 I .20 .20 .20 .20 .20 w"' 1675.00 I .20 .19 .19 .19 .19 1700.00 I .19 .19 .19 .19 .19 1725.00 I .19 .19 .19 .19 .19 1750.00 I .19 .19 .19 .19 .19 + 1775.00 I .18 .18 .18 .18 .18 1800.00 I .18 .18 .18 .18 .18 1825.00 I .18 .18 .17 .17 .17 1850.00 I .17 .17 .17 .17 .17 wo 1875.00 I .17 .16 .16 .16 .16 1900.00 I .16 .16 .16 .16 .15 1925.00 I .15 .15 .15 .15 .15 1950.00 I .15 .15 .14 .14 .14 MIN 1975.00 I .14 .13 .13 .13 .12 2000.00 .12 .12 .11 .11 .10 2025.00 .09 .08 .06 .01 .00 ass far w wa S/N: Bentley Systems, Inc. NM Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 w Appendix A A-1 Index of Starting Page Numbers for ID Names wr L LANDFILL POND. . . 5.01, 7.01, 7.02, 7.04, 7.05 err 0 ONSITE UNDET. . . 2.01, 3.01 OUT 10 2. . . 4.01, 4.04 .. Outlet 2. . . 6.01, 6.05 S SITE. . . 2.03, 3.02 .. W Watershed. . . 1.01 IMO ew wr wr MIN r. NON S/N: Bentley Systems, Inc. r Bentley PondPack (10.00.027.00) 10:17 PM 10/22/2014 LANDFILL POND OUTFALL DESIGN Table of Contents i NO `®` Table of Contents NW ********************** TC CALCULATIONS ********************* CREEK AREA Tc Calcs 1.01 yr ********************** CN CALCULATIONS ********************* CREEK AREA Runoff CN-Area 2.01 me *********************** HYG ADDITION *********************** OUT 20 Node: Addition Summary 3.01 wr rr +rw w Sr* S/N: Bentley Systems, Inc. ag" Bentley PondPack (10.00.027.00) 9:27 AM 5/20/2014 ow Type. . . . Tc Calcs Page 1.01 Name. . . . CREEK AREA rr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\Adequate Outfall .A. TIME OF CONCENTRATION CALCULATOR ®r Segment #1: Tc: User Defined Segment #1 Time: 60.00 min mom Total Tc: 60.00 min OM MO WO UM OM MO WM S/N: Bentley Systems, Inc. Bentley PondPack (10.00.027.00) 9:27 AM 5/20/2014 or Type. . . . Tc Cabs Page 1.02 Name. . . . CREEK AREA rr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\Adequate Outfall Tc Equations used. . . wow ___= User Defined OP Tc = Value entered by user Where: Tc = Time of concentration wr OW AM AA AW AA AA W. +rt w AM r S/N: Bentley Systems, Inc. "" Bentley PondPack (10.00.027.00) 9:27 AM 5/20/2014 am ow Type. . . . Runoff CN-Area Page 2.01 Name. . . . CREEK AREA or File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\Adequate Outfall alp RUNOFF CURVE NUMBER DATA Impervious op Area Adjustment Adjusted Soil/Surface Description CN acres %C %UC CN Residential Districts - 1/2 acre 80 257.760 80.00 ors COMPOSITE AREA & WEIGHTED CN ---> 257.760 80.00 (80) ow mu WO AN WO MIS Al if 410. UM S/N: Bentley Systems, Inc. ems Bentley PondPack (10.00.027.00) 9:27 AM 5/20/2014 mr Type. . . . Node: Addition Summary Page 3.01 Name. . . . OUT 20 Event: 2 yr MO File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\Adequate Outfall Storm. . . Typell 24hr Tag: 2 asp SUMMARY FOR HYDROGRAPH ADDITION at Node: OUT 20 ow HYG Directory: H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Desigr\Adequate Upstream Link ID Upstream Node ID HYG file HYG ID HYG tag ROUTE 30 LEVEL SPREAD IN ROUTE 30 2 ADDLINK 40 CREEK AREA CREEK AREA 2 INFLOWS TO: OUT 20 Volume Peak Time Peak Flow moo HYG file HYG ID HYG tag cu.ft min cfs ROUTE 30 2 32228 720.00 5.42 CREEK AREA 2 1680848 750.00 241.10 ai TOTAL FLOW INTO: OUT 20 Volume Peak Time Peak Flow HYG file HYG ID HYG tag cu.ft min cfs arr OUT 20 2 1713077 750.00 245.14 or No or MR rra OM UM S/N: Bentley Systems, Inc. ar Bentley PondPack (10.00.027.00) 9:27 AM 5/20/2014 airr mir Type. . . . Node: Addition Summary Page 3.02 Name. . . . OUT 20 Event: 2 yr File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\Adequate Outfall OP Storm. . . Typell 24hr Tag: 2 gm TOTAL NODE INFLOW. . . HYG file = mil HYG ID = OUT 20 HYG Tag = 2 Peak Discharge = 245.14 cfs r Time to Peak = 750.00 min HYG Volume = 1713077 cu.ft ,O HYDROGRAPH ORDINATES (cfs) Time Output Time increment = 5.00 min min I Time on left represents time for first value in each row. MO 380.00 I .00 .04 .01 .04 .02 405.00 I .04 .02 .05 .03 .05 430.00 1 .04 .05 .04 .06 .05 455.00 I .06 .06 .07 .06 .07 .rr 480.00 I .07 .07 .07 .08 .08 505.00 .09 .09 .10 .11 .12 530.00 I .13 .15 .19 .23 .30 555.00 I .39 .49 .63 .77 .93 580.00 I 1.11 1.31 1.51 1.74 1.98 ow 605.00 I 2.25 2.53 2.84 3.19 3.56 630.00 I 3.97 4.43 4.91 5.47 6.08 655.00 6.74 7.49 8.31 9.26 10.34 680.00 11.51 12.96 14.68 16.96 21.40 w 705.00 I 28.20 40.77 61.18 86.49 122.67 730.00 I 159.23 196.85 222.61 241.53 245.14 755.00 I 240.24 229.61 209.69 188.38 165.49 780.00 I 146.42 129.23 115.84 103.97 93.43 wm 805.00 I 84.77 77.04 70.34 64.80 59.62 830.00 I 55.39 51.58 48.18 45.30 42.68 855.00 I 40.28 38.26 36.33 34.74 33.26 880.00 31.94 30.79 29.73 28.72 27.84 m 905.00 26.99 26.30 25.67 25.13 24.61 930.00 I 24.12 23.64 23.18 22.72 22.28 955.00 1 21.84 21.41 20.97 20.55 20.14 980.00 I 19.74 19.36 19.00 18.66 18.35 ism 1005.00 I 18.07 17.81 17.56 17.34 17.13 1030.00 1 16.94 16.75 16.57 16.39 16.23 1055.00 I 16.06 15.90 15.74 15.58 15.42 1080.00 I 15.27 15.11 14.96 14.80 14.65 ,0s 1105.00 I 14.50 14.34 14.19 14.04 13.89 1130.00 I 13.73 13.58 13.43 13.27 13.12 OM MO Om S/N: Bentley Systems, Inc. •"' Bentley PondPack (10.00.027.00) 9:27 AM 5/20/2014 MO WO Type. . . . Node: Addition Summary Page 3.03 Name. . . . OUT 20 Event: 2 yr ma File. . . . H:\12\V122001\Technical\Engineer\SWM Design\Landfill Pond Design\Adequate Outfall Storm. . . Typell 24hr Tag: 2 am HYDROGRAPH ORDINATES (cfs) Time I Output Time increment = 5.00 min min I Time on left represents time for first value in each row. m" I 1155.00 I 12.97 12.81 12.66 12.50 12.35 1180.00 I 12.19 12.04 11.88 11.73 11.57 1205.00 I 11.42 11.26 11.11 10.97 10.83 me 1230.00 I 10.71 10.59 10.49 10.40 10.31 1255.00 I 10.24 10.18 10.12 10.07 10.02 1280.00 I 9.97 9.93 9.89 9.85 9.82 1305.00 I 9.78 9.75 9.72 9.68 9.65 im 1330.00 I 9.62 9.59 9.56 9.53 9.50 1355.00 I 9.47 9.44 9.41 9.38 9.35 1380.00 I 9.32 9.29 9.26 9.23 9.20 1405.00 I 9.17 9.14 9.11 9.08 9.05 Am 1430.00 9.02 8.99 8.96 8.82 8.59 1455.00 I 8.29 7.78 7.18 6.41 5.61 1480.00 I 4.79 4.03 3.32 2.68 2.19 1505.00 I 1.76 1.44 1.18 .95 .78 1530.00 .63 .51 .42 .34 .27 ma 1555.00 .22 .18 .14 .12 .09 1580.00 .07 .06 .04 .03 .03 1605.00 .02 .01 .01 .01 .00 1630.00 .00 im am AW rr a AA OW ar rr S/N: Bentley Systems, Inc. "" Bentley PondPack (10.00.027.00) 9:27 AM 5/20/2014 am Appendix A A-1 Index of Starting Page Numbers for ID Names C CREEK AREA. . . 1.01, 2.01 r 0 OUT 20. . . 3.01 IWO .rr arr ra V .r OW drr rr it S/N: Bentley Systems, Inc. ""' Bentley PondPack (10.00.027.00) 9:27 AM 5/20/2014 r - Channel Report Hydraflow Express Extension for AutoCAD®Civil 3D6 2012 by Autodesk,Inc. Tuesday, May 20 2014 rr Cross Section A-A • User-defined Highlighted Invert Elev (ft) = 363.40 Depth (ft) = 3.64 Slope (%) = 1.00 Q (cfs) = 245.14 N-Value = 0.030 Area (sqft) = 31.89 Velocity (ft/s) = 7.69 Calculations Wetted Perim (ft) = 16.44 "" Compute by: Known Q Crit Depth, Yc (ft) = 3.49 Known Q (cfs) = 245.14 Top Width (ft) = 14.35 EGL (ft) = 4.56 - (Sta, El, n)-(Sta, El, n)... (0.00,368.33)-(8.48,368.00,0.030)-(10.82,366.00,0.030)-(13.17,364.00,0.030)-(15.00,363.40,0.030)-(17.86,364.00,0.030)-(22.88,366.00,0.030) -(24.95,368.00,0.030)-(27.11,370.00,0.030)-(36.98,370.00,0.030)-(40.00,368.50,0.030) rr rr • Elev (ft) Depth (ft) Section 371.00 7.60 370.00 6.60 369.00 5.60 368.00 4.60 .. 367.00 3.60 .. 366.00 2.60 ▪ 365.00 1.60 364.00 0.60 m 363.00 -0.40 362.00 -1.40 -5 0 5 10 15 20 25 30 35 40 45 Sta (ft) mm - Channel Report Hydraflow Express Extension for AutoCAD®Civil 3D®2012 by Autodesk,Inc. Tuesday, May 20 2014 `.r Cross Section B-B "' User-defined Highlighted Invert Elev (ft) = 357.56 Depth (ft) = 2.60 Slope (%) = 1.00 Q (cfs) = 245.38 - N-Value = 0.030 Area (sqft) = 40.39 Velocity (ft/s) = 6.08 Calculations Wetted Perim (ft) = 29.68 "' Compute by: Known Q Crit Depth, Yc (ft) = 2.51 Known Q (cfs) = 245.38 Top Width (ft) = 28.77 EGL (ft) = 3.17 - (Sta, El, n)-(Sta, El, n)... (0.00,368.16)-(4.80,368.00,0.030)-(9.93,366.00,0.030)-(15.55,364.00,0.030)-(32.06,362.00,0.030)-(35.00,360.88,0.030)-(37.33,360.00,0.030) -(56.47,358.00,0.030)-(60.00,357.56,0.030)-(62.74,358.00,0.030)-(65.51,360.00,0.030)-(67.61,362.00,0.030)-(69.63,364.00,0.030)-(77.09,364.79,0.030) -(85.00,364.00,0.030) rr .r - Elev (ft) Section Depth (ft) 369.00 11.44 367.00 9.44 365.00 7.44 ... 363.00 • 5.44 - 361.00 • 3.44 ri 359.00 • 1.44 357.00 • -0.56 355.00 -2.56 -10 0 10 20 30 40 50 60 70 80 90 100 Sta (ft)