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HomeMy WebLinkAbout1999-04-06 Drainage Analysis 2-4-99 4 NOI Withdrawn .PROFESSIONAL ENGINEERS AND LAND SURVEYORS j 160 SUMMER STREET HAVERHILL, MASSACHUSETTS 01830-6318 (978)373-0310 FAX: (978)372-3960 DRAINAGE ANALYSIS FOR THE NOTICE INTENT FOR THE NORTHEAST STORAGE CORPORATIONtS SUTTON STREET, NORTH ANDOVER SITE DATE: FEBRUARY 4, 1999 �N OF Mqs`�O P G. 124 o ®' . 8695 9SIONAL EN ,I I Site Plan for Northeast Storage Corp. Drainage Analysis A drainage analysis has been performed to determine the impact that the development of the project will have on off-site peak runoff rates. The "HydroCAD" Stormwater Modeling System has been used to compare the pre- and post-development runoff rates and to design the stormwater detention facilities. The stormwater management system as designed will keep post-development peak runoff rates equal to or less than the pre-development peak rates for the 2, 10, and 100 year storm events. Under existing conditions, runoff from the site flows generally in a northeastward direction from Sutton Street towards the drainage ditch that lies along the edge of the developed airport facilities. The "PLAN OF EXISTING DRAINAGE CONDITIONS", included in the folder at the back of this report, shows the drainage characteristics of the site under pre-development conditions. Under proposed conditions,the site has been divided into 9 Drainage Areas to facilitate the design of the detention/treatment areas. The "PLAN OF PROPOSED DRAINAGE CONDITIONS", also included in the folder at the back of this report, shows the drainage characteristics of the site under post-development conditions. The construction of the two detention areas on the site will keep post-development peak runoff rates equal to or less than the pre-development peak rates. The results of the drainage analysis are summarized as follows-. PEAK RUNOFF RATES 2 YEAR STORM 10 YEAR STORM 100 YEAR STORM EXISTING CONDITIONS 4.1 C.F.S. 8.7 C.F.S. 15.7 C.F.S. C.F.S.C. PROPOSED CONDITIONS 30 C. 1 .80 7.3-----------C.F.S. 13.6 C.F.S. The drainage area descriptions, hydrographs, and routing information, as well as the detention area descriptions and inflow/outflow data, are included in the "HydroCAD" Stormwater Modeling System printouts that follow. Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 1 TYPE III 24-HOUR RAINFALL= 3.10 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. H droCAD 5 .01 001057 c 1986-1998 A lied Microco uter Systems WATERSHED ROIITING \�I J' �� ( L.J D 21 —� 22 23 �3 40 60 � � 26 24 --7\ 25 —'`� �7 us SUBCATCHHENT [] REACH Q POND a LINK SUBCATCHMENT 1 = EXISTING CONDITIONS: DRAINAGE AREA 1 -' SUBCATCHMENT 2 = PROPOSED CONDITIONS: DRAINAGE AREA 2 -> REACH 21 SUBCATCHMENT 3 = PROPOSED CONDITIONS: DRAINAGE AREA 3 -> REACH 23 SUBCATCHMENT 4 = PROPOSED CONDITIONS: DRAINAGE AREA 4 -> REACH 24 SUBCATCHMENT 5 = PROPOSED CONDITIONS: DRAINAGE AREA 5 -> REACH 25 SUBCATCHMENT 6 = PROPOSED CONDITIONS: DRAINAGE AREA 6 -> REACH 26 SUBCATCHmENT 7 = PROPOSED CONDITIONS: DRAINAGE AREA 7 -> POND 40 SUBCATCHMENT 6 = PROPOSED CONDITIONS: DRAINAGE AREA 8 -> POND 50 SUBCATCHMENT 9 = PROPOSED CONDITIONS: DRAINAGE AREA 9 -> POND 60 REACH 21 = 121, RCP CULVERT UNDER DRIVEWAY -> REACH 22 -> REACH 23 REACH 22 = GRASS SWALE -> POND 40 REACH 23 = GRASS SWALE -> REACH 25 REACH 24 = 12" RCP DRAIN -> REACH 27 REACH 25 = 181, RCP DRAIN -> REACH 27 REACH 26 = 121, RCP DRAIN Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 2 TYPE III 24-HOUR RAINFALL= 3.10 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. H dr CAD 5.01 001057 c 1986-1 8 A li d Microc ter Svstemc REACH 27 = 18" RCP DRAIN -> POND 40 POND 40 = DETENTION AREA 1 -> POND 60 POND 50 = DETENTION AREA #2 -> POND 60 POND 60 = Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 3 TYPE III 24-HOUR RAINFALL= 3.10 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. LlydroCAD 5.01 001057 (C) 1986-1998 Applied microcomputer Systems SUBCATCHMENT 1 EXISTING CONDITIONS: DRAINAGE AREA 1 PEAK= 4.12 CFS @ 12.10 HRS, VOLUME= .33 AF ACRES .- CN SCS TR-20 METHOD .58 98 IMPERVIOUS TYPE III 24-HOUR 3 .86 70 WOODS/MEADOW: GOOD CONDITION RAINFALL= 3 -10 IN 4.44 74 SPAN= 10-20 HRS, dt=.l HRS Method Comment Tc (min)- TR-55 SHEET FLOW Segment ID: A .5 Smooth surfaces n=.011 L=30' P2=3 .1 in s=.02 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: B 8.1 Woodland KV=5 L=440' s=.033 1/ 1 V=.91 fps Total Length= 470 ft Total Tc= 8.6 SUBCATCHMENT I RUNOFF EXISTING CONDITIONS: DRAINAGE AREA 1 4,0 AREA.:: 4.44 AC 3.5 Tc= 8.6 MIN CN= 74 3,0 SCS TR-20 METHOD LO TYPE III 24-HOUR 2,5 RAINFALL= 3. 10 IN 2.0 PEAK= 4. 12 CFS e 12. 1 HRS CD 1 1 .5 UOLUME= 33 AF 1 .0 .5 "L M Ln w M CD TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 4 TYPE III 24-HOUR RAINFALL= 3.10 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. HydroCAD 5.01 001057 (c) 1986-199.8 A=lied Microco=uter Systems SUBCATCHMENT 2 PROPOSED CONDITIONS: DRAINAGE AREA 2 PEAK= .94 CFS @ 12.00 HRS, VOLUME= .06 AF ACRES CN SCS TR-20 METHOD 21 98 IMPERVIOUS TYPE III 24-HOUR .28 74 OPEN SPACE RAINFALL= 3 .10 IN .49 84 SPAN= 10-20 HRS, dt=.l HRS Method Comment Tc (min) TR-55 SHEET FLOW Segment ID: A .3 Smooth surfaces n=.011 L=20' P2=3 .1 in s=.02 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: B .4 Unpaved KV=16.1345 L=60' s=.03 1/ 1 V=2.79 fps SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: C 1.7 Grassed Waterway KV=15 L=200' s=.018 ' /' V=2.01 fps Total Length= 280 ft Total Tc= 2.4 SUBCATCHMENT 2 RUNOFF PROPOSED CONDITIONS: DRAINAGE AREA 2 90 AREA= .49 AC 85 Tc= 2.4 MIN 80 CN= 84 .75 .70 SCS TR-20 METHOD .65 .60 TYPE III 24-HOUR .55 RAINFALL= 3. 10 IN .50 45 PEAK= .94 CFS 40 e 12 HRS o .3530 UDLUME= 06 AF . .25 20 5 . 10 .05 .00 M 71- CO TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 5 TYPE III 24-HOUR RAINFALL= 3.10 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. hydroCAD 5.01 001057, (c) 1986-1998 LPPli_ed MicrocoMuter S stems y� SUBCATCHmENT 3 PROPOSED CONDITIONS: DRAINAGE AREA 3 pEAy,= 1.69 CFS @ 12.01 HRS, VOLUME= -11 AF SCS TR-20 METHOD ACRES CN TYPE III 24-HOUR .45 98 IMPERVIOUS RAINFALL= 3 .10 IN .29 74 OPEN SPACE SPAN= 10-20 HRS, dt=.l HRS .74 89 Tr- (min) Me Cc .5 TR-55 SHEET FLOW Segment ID: A Smooth surfaces n=.011 L=30' P2=3 .1 in s=.02 0.0 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: B Unpaved Kv=16 .1345 L=15' S=.17 ' / ' V=6.65 fps 3 .6 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: C Grassed Waterway Kv=15 L=325' S=.01 ' / , V=1.5 fps ---------- Total Length= 370 ft Total Tc= 4.1 SUBCATCHMENT 3 RUNOFF PROPOSED CONDITIONS: DRAINAGE AREA 3 1 .6 AREA= .74 AC 1 .5 Tc= 4. 1 MIN 1 .4 CN= 89 i .3 1 .2 SCS TR-20 METHOD TYPE III 24-HOUR L+- 1 .0 RAINFALL= 3. 10 IN L) '9 .8 PEAK= 1 .69 CFS .7 e 12.01 HRS 0 6 UOLUME= . 11 AF .5 ,4 ,3 ,2 M M M TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 6 TYPE III 24-HOUR RAINFALL= 3.10 IN Prepared by CHRISTIANSEN & SERGI, INC. 4 Feb 99 HvdroCAD 5.01 001057 (C) 1986-1998 Applied Microcomputer Svstems SUBCATCHMENT 4 PROPOSED CONDITIONS: DRAINAGE AREA 4 PEAK= 1.58 CFS @ 11.99 HRS, VOLUME= .10 AF ACRES CN SCS TR-20 METHOD .49 98 IMPERVIOUS TYPE III 24-HOUR .06 74 OPEN SPACE RAINFALL= 3 -10 IN .55 95 SPAN= 10-20 HRS, dt=.l HRS Method- Comment Tr (min) TR-55 SHEET FLOW Segment ID: A .7 Smooth surfaces n=.011 L=50' P2=3 .1 in s=.02 1 /1 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: B 1.7 Paved KV=20.3282 L=315' s=.024 V=3 .15 fps Total Length= 365 ft Total Tc= 2-4 SUBCATCHMENT 4 RUNOFF PROPOSED CONDITIONS: DRAINAGE AREA 4 1 .5 AREA= .55 AC 1 .4 Tc= 2.4 MIN 1 .3 CN= 95 1 .2 1 . 1 SCS TR-20 METHOD to 1 .0 TYPE III 24-HOUR 0 .9 RAINFALL= 3. 10 IN 7 PEAK= 1 .58 CF5 e 11 .99 HR5 C) .6 -5 UOLUME= . 10 AF . - .4 3 .2 . 1 M M TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 7 TYPE III 24-HOUR RAINFALL= 3.10 IN Prepared by CHRISTIANSEN & SERGI, INC. 4 Feb 99 HydroCAD 5 01 001057 (c) 1986-1998 Applied Microcomputer Systems SUBCATCHMENT 5 PROPOSED CONDITIONS: DRAINAGE AREA 5 PEAK= .75 CFS @ 11.99 HRS, VOLUME= .05 AF ACRES CN SCS TR-20 METHOD .25 98 IMPERVIOUS TYPE III 24-HOUR RAINFALL= 3 .10 IN SPAN= 10-20 HRS, dt=.l HRS Method Comment Tr (min) TR-55 SHEET FLOW Segment ID: A .5 Smooth surfaces n=.011 L=30' P2=3 .1 in s=.02 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: B 1.0 Paved Kv=20.3282 L=160' s=.018 '/ ' V=2.73 fps Total Length= 190 ft Total Tc= 1.5 SUBCATCHMENT 5 RUNOFF PROPOSED CONDITIONS ; DRAINAGE AREA 5 .75 70 AREA- .25 AC .65 Tc= 1 .5 MIN 60 CN= 98 .55 n .50 SCS TR-20 METHOD TYPE III 24-HOUR c, ,45 RAINFALL= 3. 10 IN u .40 v 35 PEAK= .75 CFS 3 .30 e 11 .99 HRS � 25 UOLUME= .05 AF Ll- 20 . 15 10 05 0.00m = N M IT U) 0 r co o� m TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 8 TYPE III 24-HOUR RAINFALL= 3.10 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. Hydrg 5.01 .001057 _.(C) 1986-19 8 lied Microco uter S stems SUBCATCHMENT 6 PROPOSED CONDITIONS: DRAINAGE AREA 6 PEAK= 2.24 CFS @ 11.99 HRS, VOLUME= .14 AF SCS TR-20 METHOD ACRES CN TYPE III 24-HOUR .74 98 IMPERVIOUS RAINFALL= 3 .10 IN SPAN= 10-20 HRS, dt=.l HRS Method . Comment .4 TR-55 SHEET FLOW Segment ID: A Smooth surfaces n=.011 L=25' P2=3 .1 in s=.02 1.5 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: B Paved KV=20.3282 L=260' s=.019 '/ ' V=2.8 fps ---------- Total Length= 285 ft Total Tc= 1.9 SUBCATCHMENT 6 RUNOFF PROPOSED CONDITIONS: DRAINAGE AREA 6 2.2 AREA= .74 AC 2.0 Tc= 1 .9 MIN 1 .8 CN= 98 1 ,6 SCS TR-20 METHOD TYPE III 24-HOUR 1 RAINFALL= 3. 10 IN U 1 ,2 PEAK= 2.24 CFS 1 .0 e 11 .99 HRS 0 '8 UOLUME= . 14 OF __j 4 ,2 M TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 9 TYPE III 24-HOUR RAINFALL= 3.10 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. HydroCAD 5.01 Q01057 cy 1986-1998 A lied Micro SUBCATCHMENT 7 PROPOSED CONDITIONS: DRAINAGE AREA 7 PEAK= .32 CFS @ 12.01 HRS, VOLUME= .02 AF SCS TR-20 METHOD ACRES.. TYPE III 24-HOUR .29 74 OPEN SPACE RAINFALL= 3 .10 IN SPAN= 10-20 HRS, dt=.l HRS Tc (min)- Comment 2.6 Met Segment ID: A TR-55 SHEET FLOW Grass: Short n=.15 L=40' P2=3 .1 in s=.088 .6 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: B Grassed Waterway KV=15 L=100' s=.035 '/ ' V=2.81 fps ---- ----- Total Length= 140 ft Total Tc= 3 .2 SUBCATCHMENT 7 RUNOFF PROPOSED CONDITIONS : DRAINAGE AREA 7 30 AREA= .29 AC .28 Tc= 3.2 MIN .26 CN= 74 .24 SCS TR-20 METHOD 22 TYPE III 24-HOUR .208 RAINFALL= 3. 10 IN . 1 , L) , 16 PEAK= .32 CFS . 14 @ 12,01 HRS 0 . 12 UOLUME= 02 OF , 1 0 .08 .06 34 .02 Q TIME (hour5) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 10 T-_pE III 24-HOUR RAINFALL= 3.10 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. - HydrgCAD 5.01 001057 (c) 1286-1998 AT)plied Microcom uter S stems SUBCATCHMENT 8 PROPOSED CONDITIONS: DRAINAGE AREA 8 PEAK= 1.09 CFS @ 12.10 HRS, VOLUME= .08 AF SCS TR-20 METHOD ACRES CN._ TYPE III 24-HOUR .35 98 IMPERVIOUS RAINFALL= 3.10 IN .23 74 OPEN SPACE SPAN= 10-20 HAS, dt=.l HRS .58 88 Method L Comment. - Tc (min) Segment ID:A 8 .1 TR-55 SHEET FLOW 501 P2=3 .1 in s=.06 Woods: Light underbrush n=.4 L= .8 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID:.49 f B Paved KV=20.3282 L=125' S=.015 ' / ' V=2ps 1.1 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID:C Grassed Waterway Kv=15 L=125' s=.015 '/ ' V=1 .84 fps ---------- Total Length= 300 ft Total Tc= 10.0 SUBCATCHMENT 8 RUNOFF PROPOSED CONDITIONS: DRAINAGE AREA 8 AREA= .58 AC 1 .0 Tc= 13 MIN .9 CN= 88 .8 SCS TR-20 METHOD 7 TYPE III 24-HOUR 1-4 0 .6 RAINFALL= 3. 10 IN '5 PEAK= 1 .09 CFS _R e 12, 1 HRS o .4 UOLUME= 08 AF lL 3 ,2 1 LO Q M TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 11 TYPE III 24-HOUR RAINFALL= 3.10 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. HydroCAD 5.01 001057 (c) 1986-1998 LpDlied Mic rococo puser Systems SUBCATCHMENT 9 PROPOSED CONDITIONS: DRAINAGE AREA 9 PEAY,= .82 CFS @ 12.03 HRS, VOLUME= .06 AF ACRES CN SCS TR-20 METHOD .07 98 IMPERVIOUS TYPE III 24-HOUR .37 74 OPEN SPACE RAINFALL= 3 .10 IN 37 70 WOODS: GOOD CONDITION SPAN= 10-20 HRS, dt=.l HRS .81 74 Method Comment3 .8 TR-55 SHEET FLOW Segment ID: A Grass: Short n=.15 L=50' P2=3 .1 in s=.057 .4 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: B Paved KV=20.3282 L=95' s=.035 '/ ' V=3 .8 fps .5 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: C Woodland Kv=5 L=50' s=.1 V=1.58 fps ---------- Total Length= 195 ft Total Tc= 4.7 SUBCATCHMENT 9 RUNOFF PROPOSED CONDITIONS : DRAINAGE AREA 9 80 75 AREA= 81 AC Tc= 4,7 MIN CN= 74 5 0 SCS TR-20 METHOD 5 24-HOUR TYPE III RAINFALL= 3. 10 IN 40 u .45 PEAK= .82 CFS C =4 7 7 4 MIN N R 2 METHOD HOD SC5 E T III 24 HOUR TYPE I RAINFA L PEAK= 82 CFS .35 e 12,03 HRS 0 30 UOLUME= 06 AF 25 20 . 15 ' 10 ,05 0,00CD M d Ln n r OD TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 12 TYPE III 24-HOUR RAINFALL= 3.10 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. H droCAD 5.01 001057 c 1986-1998 A lied icrocom1puter Systems REACH 21 1211 RCP CULVERT UNDER DRIVEWAY Qin = .94 CFS @ 12.00 HRS, VOLUME= .06 AF _3 MIN Qout= .92 CFS @ 12.00 HRS, VOLUME= .06 AF, ATTEN= 3%, LAG= DEPTH END AREA DISCH STOR-IND+TRANS METHOD (FT) (SO-FT) (CFS) 1211 PIPE PEAK DEPTH= .37 FT 0.0 0.0 0.00 PEAK VELOCITY= 3 .5 FPS .1 0.0 .06 n= .015 TRAVEL TIME = 2 MIN .2 .1 .27 LENGTH= 50 FT .3 .2 .60 SLOPE= .01 FT/FT SPAN= 10-20 HRS, dt=.l HRS .7 .6 2.59 .8 .7 3 .02 .9 .7 3 .29 .9 .8 3 .32 1.0 .8 3 .29 1_0 .8 3 .09 REACH 21 INFLOW & OUTFLOW 12 RCP CULUERT UNDER DRIUEWAY .90 12" PIPE .85 n=.015 L=50' S=.01 '80 .75 STOR-IND+TRANS METHOD ,70 .65 VELOCITY= 3.5 FPS ,60 TRAUEL= .2 MIN 4- .55 0 50 Qin= .94 CFS .45 Qout= .92 CFS 3 .40 LAG= ,3 MIN a .35 J ,30 1 L .25 .20 , 15 . 10 .05 0.00CS) N l d U) �D TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 13 TYPE III 24-HOUR RAINFALL= 3.1.0 IN Prepared by CHRISTIANSEN & SERGI, INC. 4 Feb 99 HydroCAD 5 01 001057 (C) 1986-1998 Applied Microcomputer Systems __ REACH 22 GRASS SWALE Qin = .92 CFS @ 12.00 HRS, VOLUME= .06 AF Qout= .72 CFS @ 12.18 HRS, VOLUME= .06 AF, ATTEN= 21%, LAG= 10.5 MIN DEPTH END AREA DISCH (FT) (SO-FT) (CFS) 6 ' x 1 ' CHANNEL STOR-IND+TRANS METHOD 0.0 0.0 0.00 SIDE SLOPE= .33 ' / ' PEAK DEPTH= .11 FT .1 .6 .61 n= .035 PEAK VELOCITY= 1.1 FPS .2 1 .3 1 .97 LENGTH= 325 FT TRAVEL TIME = 5.1 MIN .3 2.1 3 .95 SLOPE= .012 FT/FT SPAN= 10-20 HRS, dt=.1 HRS .4 3 .1 7.38 .6 4.7 13 .32 .8 6 .7 22.47 1.0 9.0 34.03 REACH 22 INFLOW & OUTFLOW GRASS SWALE ,90 65I 6' x 1 ' CHANNEL .80SIDE SLOPE= .33 '/' .75n=.035 L=325' S=.012 ,70 65STOR-IND+TRANS METHOD LO .6UELOCITY= 1 . 1 FPS u .5TRAVEL= 5. 1 MIN 4Qin= .92 CFS '4 Qout= ,72 CFS � .3.3LAG= 10,5 MIN Lj- ,2,21. 1.0 TIME (houra) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 14 TYPE III 24-HOUR RAINFALL= 3.10 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. HydroCAD 5 .0.1 001 57 c Iq86-1998 Applied Microco uter aystems REACH 23 GRASS SWALE Qin = 2.11 CFS @ 12.03 HRS, VOLUME= .17 AF Qout= 1.93 CFS @ 12.08 HRS, VOLUME= .17 AF, ATTEN= 90, LAG= 3 .3 MIN DEPTH END AREA DISCH L STOR-IND+TRANS METHOD (FT) (SO-FT) (C FS)_ PEAK DEPTH=61 x 11 CHANNEL .14 FT 0.0 0.0 0.00 SIDE SLOpE= .33 PEAK VELOCITY= 2.1 FPS .1 .6 1 .01 n= .035 150 FT TRAVEL TIME = 1.2 MIN .2 1 .3 3 .27 LENGTH= 033 FT/FT SPAN= 10-20 HRS, dt=.l HRS .3 2.1 6.54 SLOPE= .4 3 .1 12.24 .6 4 .7 22.09 .8 6 .7 37.26 1.0 9.0 56.43 REACH 23 INFLOW & OUTFLOW GRASS SWALE 2.0 CHANNEL SIDE SLOPE= 33 '/' 1 .8 n=,035 L=150' S=.033 1 .6 STOR-IND+TRANS METHOD 1 ,4 UELOCITY= 2. 1 FPS 1 .2 TRAUEL= 1 .2 MIN 1 .0 Qjn= 2. 11 CFS Qout= J ,93 CFS oin= 2 ' 1 C' "ou+ 113 _ , C 3 M 0 LAG= 3,3 MIN .4 .2 80 TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 15 TYPE III 24-HOUR RAINFALL= 3.10 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. H droCAD 5 .01 001057 c 1986-1998 Applied Microcomputer Systems REACH 24 1211 RCP DRAIN Qin = 1.58 CFS @ 11.99 HRS, VOLUME= .10 AF Qout= 1.48 CFS @ 12.01 HRS, VOLUME= .10 AF, ATTEN= 7%, LAG= .7 MIN DEPTH END AREA DISCH STOR-IND+'TRANS METHOD (FT) (SO-FT) (CFS) 1211 PIPE PEAK DEPTH= .41 FT 0.0 0.0 0.00 PEAR VELOCITY= 5.1 FPS .1 0.0 .09 n= .013 TRAVEL TIME = .6 MIN 2 .1 .37 LENGTH= 185 FT 3 .2 .83 SLOPE= .014 FT/FT SPAN= 10-20 HRS, dt=.1 HRS 7 .6 3 .53 g .7 4 .12 .9 .7 4.49 9 .8 4.53 1.0 .8 4.49 1.0 .8 4.22 REACH 24 INFLOW & OUTFLOW 12'' RCP DRAIN 1 .5 12" PIPE 1 .4 n=.013 L=185' S=.014 1 .3 1 .2 STOR-IND+TRANS METHOD 1 . 1 VELOCITY= 5. 1 FPS 1 .0 TRAVEL= .6 MIN �+ u S Qin= 1 .58 CFS Qcut= 1 .48 CF5 7 6 LAG= ,7 MIN O 5 4 3 .2 . 1 0,em v v r rn m TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 16 TYPE III 24-HOUR RAINFALL= 3.10 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. H droLAD 5.01 001057 c 1986-1998 AQplied Microcomputer MicrocoMputer Systems REACH 25 18" RCP DRAIN Qin = 2.22 CFS @ 12.00 HRS, VOLUME= .15 AF Qout= 2 .13 CFS @ 12 .01 HRS, VOLUME= .15 AF, ATTEN= 40, LAG= .5 MIN DEPTH END AREA DISCH (FT) (SO-FT) (CFS) 18" PIPE STOR-IND+'TRANS METHOD 00 PEAK DEPTH= .54 FT 0.0 0.0 0. 2 .l .00 n= .01 PEAK VELOCITY= 3 .8 FPS 100 FT TRAVEL TIME = .4 MIN .3 .3 .65 LENGTH3 .5 .4 1.45 SLOPE= .005 FT/FT SPAN= 10-20 HRS, dt=.1 HRS 1.1 1.3 6.22 1 .2 1.5 7 .26 1.4 1.7 7.92 1.4 1.7 7.99 1.5 1.8 7.92 1.5 1.8 7.43 REACH 25 INFLOW & OUTFLOW 18'' RCP DRAIN 2,2 18" PIPE 2.0 n=.013 L=100' S=.005 1 ,8 STOR-IND+TRANS METHOD 1 8 UELOCITY= 3.8 FPS i 1 4 TRAUEL= .4 MIN 4- L1 1 .2 Qin= 2.22 CFS `1 1 .0 Qout= 2. 13 CFS LAG= .5 MIN O '8 J 4 .2 0.0m N m v r m cn m TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 17 TYPE III 24-HOUR RAINFALL= 3.10 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. H droCAD 5.01 001057 c 1986-1998 A lied Microcomouter Systems REACH 26 1211 RCP DRAIN Qin = 2.24 CFS @ 11.99 HRS, VOLUME= .14 AF Qout= 2 .23 CFS @ 11.99 HRS, VOLUME= .14 AF, ATTEN= LAG= .1 MIN DEPTH END AREA DISCH STOR-IND+TRANS METHOD (FT) (S0- 7T) (CFS) 1211 PIPE PEAK DEPTH= .43 FT 0.0 0.0 0.00 PEAK VELOCITY= 6 .9 FPS .1 0.0 .12 n= .013 TRAVEL TIME = .1 MIN 2 .1 .48 LENGTH= 25 FT 3 .2 1.08 SLOPE= .024 FT/FT SPAN= 10-20 HRS, dt=.1 HRS .7 .6 4.62 g .7 5.40 .9 .7 5.88 .9 _8 5.94 1.0 .8 5.88 1.0 .8 5.52 REACH 26 INFLOW & OUTFLOW 12'' RCP DRAIN 2.2 12" PIPE 2.0 n .a13 L=25' S=.024 1 .8 STOR-IND+TRANS METHOD 1 .6 UELOCITY= 6.9 FPS 1 4 TRAVEL= . 1 MIN 4- U 1 .2 Qin= 2.24 CFS 1 .0 Qout= 2.23 CFS 3 LAG= . 1 MIN O g J ,4 ,2 0.0 m N r �r r- m rn CD TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 18 TYPE III 24-HOUR RAINFALL= 3.10 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. H droCAD 5.01 001057 c 1986-1998 A lied Microco uter Systems REACH 27 1811 RCP DRAIN Qin = 4.35 CFS @ 12.00 HRS, VOLUME= .29 AF .l MIN Qout= 4.32 CFS @ 12.00 HRS, VOLUME= .29 AF, ATTEN= lo, LAG= DEPTH END AREA DISCH STOR-IND+TRANS METHOD (FT) (SO-FT) (CFS) 18" PIPE PEAK DEPTH= .65 FT 0.0 0.0 0.00 PEAK VELOCITY= 5.8 FPS 2 .l .22 n= .013 1 MIN .3 .3 .92 LENGTH= 20 FT TRAVEL TIME = .5 .4 2 .06 SLOPE= .01 FT/FT SPAN= 10-20 HRS, dt=.l HRS 1.1 1.3 8•79 1.2 1.5 10.27 1.4 1.7 11.20 1.4 1.7 11.30 1.5 1.8 11.19 1.5 1.8 10.50 REACH 27 INFLOW & OUTFLOW 18'' RCP DRAIN 4.0 18" PIPE n=.013 L=20' S=.01 3.5 STOR-IND+TRANS METHOD 3.0 UELOCITY= 5.8 FPS TRAUEL= . 1 MIN l] 2.5 Qin= 4.35 CFS Qout= 4.32 CFS 3 �,0 LAG= . 1 MIN O01 1 .5 1 ,0 .5 0.0m N rn a n r m am m TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 19 TYPE III 24-HOUR RAINFALL= 3.10 IN Prepared by CHRISTIANSEN & SERGI, INC. 4 Feb 99 HyydroCAD 5 01 001057 (c) 1986-1998 Applied Microcomputer Systems POND 40 DETENTION AREA 1 Qin = 6 .41 CFS @ 12.01 HRS, VOLUME= .49 AF Qout= 3 .22 CFS @ 12.24 HRS, VOLUME= .47 AF, ATTEN= 500, LAG= 13 .9 MIN ELEVATION AREA INC.STOR CUM.STOR STOR-IND METHOD (FT) (SF) (CF) (CF) PEAK STORAGE = 5173 CF 141.0 2670 0 0 PEAK ELEVATION= 142.6 FT 142.0 3380 3025 3025 FLOOD ELEVATION= 144.0 FT 143 .0 4125 3753 6778 START ELEVATION= 141.0 FT 144.0 4920 4523 11300 SPAN= 10-20 HRS, dt=.1 HRS Tdet= 33 .5 MIN ( .47 AF) # ROUTE INVERT OUTLET DEVICES 1 P 141.0' 10" ORIFICE/GRATE Q=.6 PI r"2 SQR(2g) SQR(H-r) 2 P 142.0' 60 DEG V-NOTCH WEIR Q=2.53 TAN(Theta/2) H-2.5 POND 40 INFLOW & OUTFLOW DETENTION AREA 1 6.0 STOR-IND METHOD 5.5 PEAK STOR= 5173 CF 510 PEAK ELEU= 142.6 FT 4.5 Qin= 6,41 CFS 4,a Qout= 3.22 CFS u 3.5 LAG= 13.9 MIN j- 'J"'? 0 2.5-J2.01 .5 g em N m d Iff D 1� m co TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 20 TYPE III 24-HOUR RAINFALL= 3.10 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. H droCAD 5.01 001057 c 1 86-1 98 A lied Mi roc uter System POND 50 DETENTION AREA #2 Qin = 1.09 CFS @ 12.10 HRS, VOLUME= .08 AF Qout= .24 CFS @ 12 .59 HRS, VOLUME= .06 AF, ATTEN= 780, LAG= 29.5 MIN STOR-IND METHOD ELEVATION AREA INC.STOR CUM.STOR PEAK STORAGE = 1838 CF (FT) (SF) (CF) CF PEAK ELEVATION= 151.6 FT 0 0 2525 151.0 2848 FLOOD ELEVATION= 153 .0 FT 152.0 3170 2848 START ELEVATION= 151.0 FT 153 .0 3925 3548 6395 SPAN= 10-20 HRS, dt=.1 HRS Tdet= 152.4 MIN ( .06 AF) ROUTE INVERT OUTLET DEVICES 1 p 151.0° Q 2 0D6G TAN(Theta/2E V-NOTCH R H"2.5 POND 50 INFLOW & OUTFLOW DETENTION AREA 42 STOR-IND METHOD 1 .0 PEAK STOR= 1838 CF .9 PEAK ELEU= 151 .6 FT .8 Qin= 1 .09 CFS 7 Qout= .24 CFS to LAG= 29.5 MIN .5 3 O 4 J tL .3 2 -- ---- --- --- - 0,0m -N *7 v D r m rn TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 21 TYPE III 24-HOUR RAINFALL= 3.10 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. HydroCAD 5.03. 001057 (c) 1986-1 98 A-0plied MicrocoMputer Systems POND 60 Not described Qin = 3 .79 CFS @ 12.22 HRS, VOLUME= .60 AF IN Qout= 3 .79 CFS @ 12 .22 HRS, VOLUME= .60 AF, ATTEN= 0%, LAG= 0.0 M ELEVATION AREA INC.STOR CUM.STOR - METHOD (FT) (AC) (AF) (AF) PEAK STORAGE = 0.00 AF PEAK ELEVATION= 0.0 FT FLOOD ELEVATION= 0.0 FT START ELEVATION= 0.0 FT SPAN= 10-20 HRS, dt=.l HRS ROUTE_ INVERT, OUTLET DEVICES . POND 60 INFLOW & OUTFLOW Not described 3.8 3.6 - METHOD 3.4 PEAK STOR= 0.00 AF 3.2 PEAK ELEU= 0 FT 3,0 2.8 Din= 3.79 CFS 2.6 Qout= 3.79 CFS 0 2.4 1-4- 2,2 LAG= 0 MIN \Ll 2.0 1 .8 1 .6 0 1 .4 -J 1 .2 .6 1 .2 "L 0.00 m 0) TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 22 TYPE III 24-HOUR RAINFALL= 4.50 IN Prepared by CHRISTIANSEN & SERGI, INC. 4 Feb 99 H droCAD 5.01 001057 c 1986-1998 A lied Microco ter Systems SUBCATCHMENT 1 EXISTING CONDITIONS: DRAINAGE AREA 1 PEAK= 8 .73 CFS @ 12 .10 HRS, VOLUME= .67 AF ACRES CN SCS TR-20 METHOD .58 98 IMPERVIOUS TYPE III 24-HOUR 3 .86 70 WOODS/MEADOW: GOOD CONDITION RAINFALL= 4.50 IN 4.44 74 SPAN= 10-20 HRS, dt=.l HRS Method Comment Tc (min) TR-55 SHEET FLOW Segment ID: A •5 Smooth surfaces n=.011 L=30' P2=3 .1 in s=.02 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: B 8.1 Woodland KV=5 L=440' s=.033 ' / ' V=.91 fps Total Length= 470 ft Total Tc= 8 .6 SUBCATCHMENT 1 RUNOFF EXISTING CONDITIONS; DRAINAGE AREA i N.5 AREA= 4.44 AC o Tc= 8.6 MIN 7'S CN= 74 7.0 6.5 6.0 SCS TR-20 METHOD 0 5.5 TYPE III 24-HOUR �+- 5.0 RAINFALL= 4.50 IN J 4.5 4.0 PEAK= 8.73 CFS 3 3.5 e 12. 1 HRS 3,0 UOLUME= .67 OF 2.5 2.0 1 .5 1 .0 .5 0.0 Ln �D I`- m N TIME (hour5) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 23 TYPE III 24-HOUR RAINFALL= 4.50 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. H droCAD 5.01 001057 (c) 1986-1998 Alp]21ie MicrocoMuter Systems. SUBCATCHMENT 2 PROPOSED CONDITIONS: DRAINAGE AREA 2 PEAK= 1.65 CFS @ 12.00 HRS, VOLUME= .10 AF SCS TR-20 METHOD ACRES CN TYPE III 24-HOUR .21 98 IMPERVIOUS RAINFALL= 4.50 IN .28 74 OPEN SPACE SPAN= 10-20 HRS, dt=.l HRS .49 84 Comment Tr- (min) Method Segment ID: A .3 TR-55 SHEET FLOW L=20' P2=3 .1 in S=,02 Smooth surfaces n=.011 .4 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: B Unpaved KV=16.1345 L=60' s=.03 ' / ' V=2.79 fps 1.7 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: C Grassed Waterway KV=15 L=200' s=.018 1 /, V=2 .01 fps ---------- Total Length= 280 ft Total Tc= 2.4 SUBCATCHMENT 2 RUNOFF PROPOSED CONDITIONS: DRAINAGE AREA 2 1 .6 AREA-- .49 PC 1 ,5 Tc= 2,4 MIN CN= 84 1 .3 1 SCS TR-20 METHOD 1 �2 TYPE 111 24-HOUR I RAINFALL= 4,50 IN U �2, .8 PEAK= 1 .65 CFS .7 e 12 HRS 0 .6 UOLUME= . 10 AF 4 .3 .2 0.0 M It TIME (hours) Data for NORTHEAST STORAGE CORP. , STJTT014 STREET Page 24 TYPE III 24-HOUR RAINFALL= 4.50 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI' INC. lied microco uter S stems Hydr )CAD 5.01 001057 c 1986-1998 SUBCATCHMENT 3 PROPOSED CONDITIONS: DRAINAGE AREA 3 pEAy,= 2.74 CFS (jo 12.01 HRS, VOLUME= 18 AF SCS TR-20 METHOD ACRES CN TYPE III 24-HOUR .45 98 IMPERVIOUS RAINFALL= 4.50 IN 29 74 OPEN SPACE SPAN= 10-20 HRS, dt=.l HRS 74 89 Tc (min-L Comment .5 Method Segment ID: A TR-55 SHEET FLOW n=.011 L=301 P2=3 .1 in S=.02 0.0 Smooth surfaces FLOW Segment ID: B SHALLOW CONCZNTRATED/UPLAMD S=.17 ' / ' V=6 .65 fps 3 6 Unpaved Kv=16 .1345 L=15' FLOW Segment ID: C . SHALLOW CONCENTRATED/uPLAND /, V=1.5 fps ---------- Grassed Waterway Kv=15 L=3251 S=.01 Total Tc= 4.1 Total Length= 370 ft SUBCATCHMENT 3 RUNOFF PROPOSED CONDITIONS: DRAINAGE AREA 3 2.6 OREA= 74 PC T,= 4. 1 MIN 2,4 CN= 69 2,2 2.0 SCS TR-20 METHOD 1 8 TYPE III 24-HOUR RAINFPLL= 4.50 IN (4- j 6 L) 1 ,4 PEAK= 2.74 CFS TYPE 1 .2 LRSOCIl 12,01 HRS UOLUME= . 18 OF CD 1 .0 -j 6 '4 .2 M N TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 25 TYPE III 24-HOUR RAINFALL= 4.50 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. HydroCAD 5,01 . 001057 (c) 1986-1998 Applied Microco=uter Systems SUBCATCHMENT 4 PROPOSED CONDITIONS: DRAINAGE AREA 4 PEAK= 2.38 CFS @ 11-99 HRS, VOLUME= .15 AF ACRES CN SCS TR-20 METHOD .49 98 IMPERVIOUS TYPE III 24-HOUR .06 74 OPEN SPACE RAINFALL= 4.50 IN .55 95 SPAN= 10-20 HRS, dt=.l HRS Method Comment Tr- (min) TR-55 SHEET FLOW Segment ID: A .7 Smooth surfaces n=.011 L=50' P2=3 .1 in s=.02 1.7 SHALLOW CONCzNTRATED/UPLAND FLOW Segment ID: B Paved KV=20.3282 L=315' s=.024 1/1 V=3 .15 fps ---------- Total Length= 365 ft Total Tc= 2.4 SUBCATCHMENT 4 RUNOFF PROPOSED CONDITIONS : DRAINAGE AREA 4 2.2 AREA-- 55 AC Tc= 2.4 MIN 2,0 CN= 95 1 .8 1 .6 SCS TR-20 METHOD TYPE Ill 24-HOUR 4- 1 .4 RAINFALL= 4,50 IN U 1 .2 PEAK= 2,38 CFS 1 .0 a 11 .99 HRS 0 8 UOLUME= 15 OF 6LL 4 .2 0.0m N M �r 0 r- M M 0 TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 26 TYPE III 24-HOUR RAINFALL= 4.50 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. LlydroCAD 5.01 Q01057 (c) 1986-1 98 2Spplied MicrocoMuter Systems SUBCATCHMENT 5 PROPOSED CONDITIONS: DRAINAGE AREA 5 PEAK= 1.09 CFS @ 11-99 HRS, VOLUME= .07 AF ACRES CN-- SCS TR-20 METHOD .25 98 IMPERVIOUS TYPE III 24-HOUR RAINFALL= 4.50 IN SPAN= 10-20 HRS, dt=.l HRS T (mi Method Cc r- .5 TR-55 SHEET FLOW Segment ID: A Smooth surfaces n=.011 L=30' P2=3 .1 in s=.02 1.0 SHALLOW CON(ENTRATED/UPLAND FLOW Segment ID: B Paved Kv=20.3282 L=160' s=.018 1 / 1 V=2.73 fps ---------- Total Length= 190 ft Total Tc= 1 .5 SUBCATCHMENT 5 RUNOFF PROPOSED CONDITIONS : DRAINAGE AREA 5 AREA= .25 AC Tc= 1 .5 MIN CN= 98 .8 SCS TR-20 METHOD .7 TYPE III 24-HOUR U 6 RAINFALL= 4,50 IN . .5 PEAK= 1 ,09 CFS e 11 .99 HRS 0 .4 UOLUME= .07 AF Ii .3 .2 . 1 0,@CDN d Ln w h M 0) CD TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 27 TYPE III 24-HOUR RAINFALL= 4.50 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. LlydroCAD 5.01 001057 (c) 1.986-1998 8pj2lied Microco. uter S stems SUBCATCHMENT 6 PROPOSED CONDITIONS: DRAINAGE AREA 6 PEAK= 3 .28 CFS @ 11-99 HRS, VOLUME= .21 AF SCS TR-20 METHOD ACRES CN TYPE III 24-HOUR .74 98 IMPERVIOUS RAINFALL= 4.50 IN SPAN= 10-20 HRS, dt=.l HRS lrc min Method ) Comment .4 TR-55 SHEET FLOW Segment ID: A Smooth surfaces n=-011 L=25' P2=3 .1 in s=.02 1.5 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: B Paved KV=20 .3282 L=260' S=.019 1 / 1 V=2.8 fps ---------- Total Length= 285 ft Total Tc= 1.9 SUBCATCHMENT 6 RUNOFF PROPOSED CONDITIONS: DRAINAGE AREA 6 AREA= 74 AC NO� Tc= 1 .9 MIN 2 CN= 98 2.6 ' SCS TR-20 METHOD 2.2 TYPE III 24-HOUR 2 RAINFALL= 4,50 IN 1 .6 PEAK= 3.28 CFS 1 .4 e 11 ,99 HRS CD 1 .2 UDLUME= .21 AF --j 1 .0 LL- ,6 .4 .2 0.0 LO TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 28 TYPE III 24-HOUR RAINFALL= 4.50 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. H drOCAD 5.01,.. 001057 .. (C) 1986-1998 Applied MicrocoMpu er Systems SUBCATCHmENT 7 PROPOSED CONDITIONS: DRAINAGE AREA 7 PEAK= .67 CFS @ 12.01 HRS, VOLUME= .04 AF ACRES CN SCS TR-20 METHOD .29 74 OPEN SPACE TYPE III 24-HOUR RAINFALL= 4.50 IN SPAN= 10-20 HRS, dt=.l HRS Comment- Tc (min. Method.. Segment ID: A 2.6 TR-55 SHEET FLOW .1 in S=.088 Grass: Short n=.15 L=40' P2=3 .6 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: B Grassed Waterway KV=15 L=100' s=.035 1/ 1 V=2 .81 fps ---------- Total Length= 140 ft Total Tc= 3 .2 SUBCATCHMENT 7 RUNOFF PROPOSED CONDITIONS: DRAINAGE AREA 7 65 AREA= .29 AC 60 Tc= 3,2 MIN .55 CN= 74 .50 SCS TR-20 METHOD TYPE .45 111 24-HOUR(4- .40 RAINFALL= 4,50 IN .35 PEAK= 67 CF5 e 12,01 HRS OOLUME= 04 AF 20 15 . 10 '05 0,00 M v OD 6 co TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 29 TYPE III 24-HOUR RAINFALL= 4.50 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. HydroCAD 5.01 001057 (c) 1986-1998 A-pp,lied Microco uter Systems SUBCATCHMENT 8 PROPOSED CONDITIONS: DRAINAGE AREA 8 PEAK= 1.79 CFS @ 12.10 HRS, VOLUME= .14 AF SCS TR-20 METHOD ACRES CN TYPE III 24-HOUR .35 98 IMPERVIOUS RAINFALL= 4.50 IN .23 ..74 OPEN SPACE SPAN= 10-20 HRS, dt=.l HRS .58 88 'r- (min) Method Comment 8 .1 TR-55 SHEET FLOW Segment ID:A Woods: Light underbrush n=.4 L=501 P2=3 .1 in s=.06 .8 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: B Paved KV=20 .3282 L=125' s=.015 ' / ' V=2.49 fps 1.1 CONCENTRATED/UP FLOW Segment ID:C SHALLOW CONCENT Kv=15 L=125' S= 015 v=1.84 fps . Grassed Waterway --- ------ Total Length= 300 ft Total Tc= 10.0 SUBCATCHMENT 8 RUNOFF PROPOSED CONDITIONS: DRAINAGE AREA 8 1 *8 1 .7 AREA= .58 AC 1 .6 Tc= 10 MIN 1 .5 CN= 88 1 .4 1 .3 SCS TR-20 METHOD 1 .2 TYPE III 24-HOUR LO 1 . RAINFALL= 4.50 IN 1 ,3 .9 FEAK= 1 .79 CFS .8 e 12. 1 HRS .7 0 UOLUME= 14 AF I ,6 IL .5 .4 .3 .2 M TIME (hour5) Data for NORTHEAST STORAGE CORP. , SUTTON STREET page 30 TYPE III 24-HOUR RAINFALL= 4.50 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. 01057 c 1986-1998 - lied MicrocoTnruter Systems------- HVdroCAD. 5.01 0 SUBCATCHMENT 9 PROPOSED CONDITIONS: DRAINAGE AREA 9 PEAK= 1.76 CFS @ 12.02 HRS, VOLUME= .12 AF SCS TR-20 METHOD ACRES CN TYPE III 24-HOUR .07 98 IMPERVIOUS RAINFALL= 4.50 IN .37 74 OPEN SPACE SPAN= 10-20 HRS, dt=.l HRS 3 7 70 WOODS: GOOD CONDITION . _ .81 74 Tc (minL .. Comment 3 .8 Method Segment ID- A TR-55 SHEET FLOW Grass: Short n=.15 L=501 P2=3 .1 in S=.057 .4 SHALLOW CONCENTRATED/Up FLOW Segment ID: B Paved Kv=20.3282 L=95' S=.035 ' / ' V=3 .8 fps .5 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: C Woodland Kv=5 L=50' s=.1 p V=1.58 fps - -------- Total Length= 195 ft Total Tc= 4.7 SUBCATCHMENT 9 RUNOFF PROPOSED CONDITIONS : DRAINAGE AREA 9 1 .7 AREA= .81 AC 1 ,6 Tc= 4.7 MIN ' '5 CN= 74 1 .4 1 .3 SCS TR-20 METHOD 1 .2 TYPE III 24-HOUR 1 . 1 RAINFALL= 4.50 IN PEAK= 1 ,76 CF5 e 12.02 HRS .7 VOLUME= 12 AF 01 .6 5 4 3 ,2 . I M CS) 0.0 CD `D TIME (hour5) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 31 TYPE III 24-HOUR RAINFALL= 4.50 IN Prepared by CHRISTIANSEN & SERGI, INC. 4 Feb 99 H droCAD 5.01 001057 c 1986-1998 Lkpplied Microcomputer Systems..- REACH 21 12" RCP CULVERT UNDER DRIVEWAY Qin = 1.65 CFS @ 12.00 HRS, VOLUME= .10 AF Qout= 1 .60 CFS @ 12.00 HRS, VOLUME= .10 AF, ATTEN= 3%, LAG= 2 MIN DEPTH END AREA DISCH (FT) (SO-FT) (CFS) 12" PIPE STOR-IND+TRANS METHOD PEAK DEPTH= 51 FT 0.0 0.0 0.00 .1 0.0 .06 n= .015 PEAK VELOCITY= 4 .1 FPS .2 .1 .27 LENGTH= 50 FT TRAVEL TIME = .2 MIN .3 .2 .60 SLOPE= .01 FT/FT SPAN= 10-20 HRS, dt=.1 HRS .7 .6 2.59 .8 .7 3 .02 .9 ,7 3 .29 .9 .8 3 .32 1.0 .8 3 .29 1 .0 .8 3 .09 REACH 21 INFLOW & OUTFLOW 12'' RCP CULUERT UNDER DRIUEWAY 1 .6 12'' PIPE 1 . 1 4 n=.015 L=50' S=.81 1 .3 STOR-IND+TRANS METHOD 1 .2 UELOCITY= 4. 1 FPS `O 1 . 1 TRAVEL= .2 MIN 4- q Qin= 1 .65 CFS •S Qout= 1 .60 CFS 3 .7 LAG= .2 MIN O .6 -� .5 4 .3 .2 . 1 0.em N r m rn m TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 32 TYPE III 24-HOUR RAINFALL= 4.50 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. H droCAD 5 .01 001057 c 1986-1998 Applied MicrgconMuter Systems REACH 22 GRASS SWALE Qin = 1 .60 CFS @ 12.00 HRS, VOLUME= .10 AF Qout= 1.31 CFS @ 12.12 HRS, VOLUME= .10 AF, ATTEN= 180, LAG= 7.2 MIN DEPTH END AREA DISCH STOR-IND+TRANS METHOD (FT) (SO-FT) (CFS) 6 ' x 1' CHANNEL K DEPTH= .15 FT PEA 0.0 0.0 0.00 SIDE SLOPE= .33 '/ ' PEAK VELOCITY= 1.3 FPS l .6 .61 n= .035 TRAVEL TIME = 4 .1 MIN .2 1 .3 1.97 LENGTH= 325 FT SPAN= 10-20 HRS, dt=.1 HRS .3 2.1 3 .95 SLOPE= .012 FT/FT .4 3 .1 7.38 .6 4.7 13 .32 .8 6 .7 22.47 1.0 9.0 34.03 REACH 22 INFLOW & OUTFLOW GRASS SWALE 1 ,6 1 .5 6' x 1 ' CHANNEL 1 .4 SIDE SLOPE= .33 '/' 1 .3 n=.035 L=325' S=.012 r, 1 .2 11 STOR-IND+TRANS METHOD 1 0 1 � VELOCITY= 1 .3 FPS u g TRAVEL= 4. 1 MIN C1 i n= 1 ,60 CFS 3 7 i ty Qout= 1 .31 CFS 0 .5 i �, LAG= 7,2 MIN LL .4 1l 3 it .2 0m N m d lf1 D t� CID cT m TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 33 TYPE III 24-HOUR RAINFALL= 4.50 IN Prepared by CHRISTIANSEN & SERGI, INC. 4 Feb 99 H droCAD 5 .01 001057. c 1986-1998 A lied Microco uter Systems REACH 23 GRASS SWALE Qin = 3 .69 CFS @ 12.03 HRS, VOLUME= .28 AF Qout= 3 .43 CFS @ 12.08 HRS, VOLUME= .28 AF, ATTEN= 70, LAG= 2 .9 MIN DEPTH END AREA DISCH (FT) (SO-FT) (CFS) 6 ' x 1' CHANNEL STOR-IND+TRANS METHOD 0.0 0.0 0.00 SIDE SLOPE= .33 ' / ' PEAK DEPTH= 20 FT .1 .6 1.01 n= .035 PEAK VELOCITY= 2.5 FPS .2 1.3 3 .27 LENGTH= 150 FT TRAVEL TIME = 1 .0 MIN .3 2.1 6 .54 SLOPE= .033 FT/FT SPAN= 10-20 HRS, dt=.l HRS .4 3 .1 12.24 .6 4 .7 22 .09 .8 6 .7 37.26 1.0 9.0 56.43 REACH 23 INFLOW & OUTFLOW GRASS SWALE 3.6 6' x 1 ' CHANNEL 3.4 3.2 SIDE SLOPE= .33 .3.0 n=.035 L=150' S=.033 2.8 2.6 STOR-IND+TRANS METHOD to 2.4 UELOCITY= 2.5 FPS c_ 2.2 TRAUEL= 1 MIN u 2.a 1 .8 Qin= 3.69 CFS 0 1 .4 Qout= 3.43 CFS -1 1 .2 LAG= 2.9 MIN L- 1 a 1 .8 ,6 .4 2 0,em N r9 IT r m rn m TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 34 TYPE III 24-HOUR RAINFALL= 4.50 IN Prepared by CHRISTIANSEN & SERGI, INC. 4 Feb 99 H droCAD 5.01 001057 c 1986-1998 A lied Microco uter Systems REACH 24 1281 RCP DRAIN Qin = 2.38 CFS @ 11.99 HRS, VOLUME= .15 AF Qout= 2.22 CFS @ 12.01 HRS, VOLUME= .15 AF, ATTEN= 7%, LAG= .6 MIN DEPTH END AREA DISCH (FT) (SO-FT) (CFS) 12" PIPE STOR-IND+TRANS METHOD PEAK DEPTH= 52 FT 0.0 0.0 0.00 .1 0.0 .09 n= .013 PEAR VELOCITY= 5.6 FPS .2 .1 .37 LENGTH= 185 FT TRAVEL TIME = .6 MIN .3 .2 .83 SLOPE= .014 FT/FT SPAN= 10-20 HRS, dt=.1 HRS .7 .6 3 .53 .8 .7 4.12 .9 .7 4.49 .9 .8 4.53 1 .0 .8 4.49 1.0 .8 4.22 REACH 24 INFLOW & OUTFLOW 12'' RCP DRAIN 2.2 12" PIPE 2,0 n=.1313 L=185' S=.014 1 .8 STOR-IND+TRANS METHOD 1 .6 UELOCITY= 5.6 FPS LO TRAVEL= .6 MIN �- 1 .4 1 2 Din= 2.38 CFS Qout= 2.22 CFS 3 1 �8 LAG= ,6 MIN O 8 J LL .6 .4 .2 0.0m T m m m TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 35 TYPE III 24-HOUR RAINFALL= 4.50 IN Prepared by CHRISTIANSEN x SERGI, INC. 4 Feb 99 H droCAD 5.01 001057 c 1986-1998 AnLpl.ied Microco uter Systems REACH 25 18" RCP DRAIN Qin = 3 .30 CFS @ 12.00 HRS, VOLUME= .22 AF Qout= 3 .17 CFS @ 12.01 HRS, VOLUME= .22 AF, ATTEN= 4%, LAG= .5 MIN DEPTH END AREA DISCH (SO-FT) (CFS) 18" PIPE STOR-IND+TRANS METHOD (FT) PEAK DEPTH= 68 FT 0.0 0.0 0.00 .2 .1 .16 n= .013 PEAK VELOCITY= 4.2 FPS .3 .3 .65 LENGTH= 100 FT TRAVEL TIME = .4 MIN .5 .4 1.45 SLOPE= .005 FT/FT SPAN= 10-20 HRS, dt=.l HRS 1.1 1.3 6 .22 1.2 1.5 7.26 1.4 1.7 7.92 1.4 1.7 7.99 1.5 1.8 7.92 1.5 1.8 7.43 REACH 25 INFLOW & OUTFLOW 18'' RCP DRAIN 18- PIPE U 2 8 n=.013 L=100' S=.005 2.6 STOR-IND+TRANS METHOD 2'4 UELOCITY= 4.2 FPS 2,2 TRAVEL= .4 MIN 2. 1 t� 1 .8 Din= 3.30 CFS 1 .6 Qout= 3. 17 CFS 3 1 ,4 LAG= .5 MIN O 1 .2 Lei.. 1 .0 8 .6 4 .2 O,Om N m LO n r m m m N TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 36 TypE III 24-HOUR RAINFALL= 4.50 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. HydroCAD 5.0l.. 001057 (c) 1986-1998 Applied Microcomputer Systems REACH 26 12" RCP DRAIN Qin = 3 .28 CFS @ 11.99 HRS, VOLUME= .21 AF Qout= 3 .26 CFS @ 11 -99 HRS, VOLUME= .21 AF, ATTEN= 1--., LAG= .1 MIN DEPTH END AREA DISCH STOR-IND+TRANS METHOD (FT) (SO-FT) (C 12" PIPE PEAK DEPTH= .55 FT 0.0 0.0 0.00 .1 0.0 .12 n= .013 PEAK VELOCITY= 7.4 FPS .2 .1 .48 LENGTH= 25 FT TRAVEL TIME = .1 MIN .3 .2 1 .08 SLOPE= .024 FT/FT SPAN= 10-20 HRS, dt=.l HRS .7 .6 4.62 .8 .7 5.40 .9 .7 5.88 .9 .8 5.94 1 .0 .8 5.88 1.0 .8 5.52 REACH 26 INFLOW & OUTFLOW 12'' RCP DRAIN �2' 12" PIPE 3,0 2 n=,013 L=25' S=,024 2.,' STOR-IND+TRANS METHOD 2.4 UELOCITY= 7,4 FPS r-1 2�2 MIN ,10 2 TRAUEL= . 1 ' �l. Qin= 3.28 CFS 1 ,6 Qout= 3.26 CFS 1 ,14 LAG= . 1 MIN 0 1 .2 -j 1 .0 .4 ,2 m v in r as m TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 37 TYPE III 24-HOUR RAINFALL= 4.50 IN Prepared by CHRISTIANSEN & SERGI, INC. 4 Feb 99 H droCAD 5.01 001057 c 1986-1998 A lied Microco uter S stems REACH 27 18" RCP DRAIN Qin = 6 .41 CFS @ 12.00 HRS, VOLUME= .43 AF Qout= 6 .38 CFS @ 12.00 HRS, VOLUME= .43 AF, ATTEN= 1%, LAG= .1 MIN DEPTH END AREA DISCH (FT) (SO-FT) (CFS) 18" PIPE STOR-IND+TRANS METHOD PEAK DEPTH= 84 FT 0.0 0.0 0.00 .2 .1 .22 n= .013 PEAK VELOCITY= 6 .3 FPS .3 .3 .92 LENGTH= 20 FT TRAVEL TIME = .1 MIN .5 .4 2.06 SLOPE= .01 FT/FT SPAN= 10-20 HRS, dt=.l HRS 1.1 1.3 8 •79 1.2 1.5 10.27 1.4 1 .7 11.20 1 .4 1.7 11.30 1 .5 1.8 11.19 1.5 1.8 10.50 REACH 27 INFLOW & OUTFLOW 18'' RCP DRAIN 6.0 18" PIPE 5.5 n=.313 L=20' S=.31 510 STOR-IND+TRANS METHOD n 4.5 VELOCITY= 6,3 FPS 4.0 TRAVEL= . 1 MIN u 3•5 Qin= 6.41 CFS v 3.0 Qout= 6.38 CFS 2.5 LAG= . 1 MIN lJ 2,0 1 .5 1 .0 .5 0.0m N m a n m r m m m TIME (hour5) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 38 TYPE III 24-HOUR RAINFALL= 4.50 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. Hydro 5.01 001057 c 1986-1998 Alpp.l.ied Microcom uter Systems POND 40 DETENTION AREA 1 Qin = 10.19 CFS ® 12.01 HMS, VOLUME= .76 AF Qout= 5.87 CFS @ 12.20 HRS, VOLUME= .7S AF, ATTEN= 42%, LAG= 11.2 MIN ELEVATION AREA INC_STOR CUM.STOR STOR-IND METHOD PEAK STORAGE = 7725 CF (FT) (SF) fCF) (CF) PEAK ELEVATION= 143 .2 FT 141.0 2670 0 0 FLOOD ELEVATION= 144.0 FT 142.0 3380 3025 3025 START ELEVATION= 141.0 FT 143 .0 4125 3753 6778 SPAN= 10-20 HRS, dt=.l HRS 144.0 4920 4523 11300 Tdet= 29.3 MIN ( .74 AF) ROUTE INVERT OIITLET DEVICES 1 P 141.0' 101, ORIFICE/GRATE Q=.6 PI r"2 SQR(2g) SQR(H-r) 2 P 142.01 60 DEG V-NOTCH WEIR Q=2.53 TAN(Theta/2) H"2 .5 POND 40 INFLOW & OUTFLOW DETENTION AREA 1 10 STOR-IND METHOD 9 PEAK STDR= 7725 CF PEAK ELEU= 143.2 FT S 7 Qin= 10, 19 CFS i Qout= 5.87 CFS (-4- 6 LAG= 11 .2 MIN L) 4 r tt 3 j 2 \� i 0m ^ r� v r CD rn m TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 39 TYPE III 24-HOUR RAINFALL= 4.50 IN Prepared by CHRISTIANSEN & SERGI, INC. 4 Feb 99 H droCAD 5.01 001057 c 1986-1998 Applied Microcomputer--Systems POND 50 DETENTION AREA #2 Qin = 1.79 CFS ® 12.10 HRS, VOLUME= .14 AF Qout= .62 CFS @ 12.45 HRS, VOLUME= .12 AF, ATTEN= 650, LAG= 20.8 MIN ELEVATION AREA INC.STOR CUM.STOR STOR-IND METHOD (FT) (SF) (CF) (CF) PEAK STORAGE = 2702 CF 151.0 2525 0 0 PEAK ELEVATION= 151.9 FT 152.0 3170 2848 2848 FLOOD ELEVATION= 153 .0 FT 153 .0 3925 3548 6395 START ELEVATION= 151.0 FT SPAN= 10-20 HRS, dt=.l HRS Tdet= 116 MIN ( .11 AF) ROUTE INVERT OUTLET DEVICES 1 P 151.0 ' 30 DEG V-NOTCH WEIR Q=2.61 TAN(Theta/2) H"2.5 POND 50 INFLOW & OUTFLOW DETENTION AREA #2 1 .S 1 .7 STOR-IND METHOD 1 .6 PEAK STOR= 2702 CF 1 .5 PEAK ELEU= 151 .9 FT 1 .4 1 '3 Qin= 1 ,79 CFS 1 ,2 Qout= .62 CF5 uLAG= 20.8 MIN .9 .8 3 ,7 .6 I� .5 1 .4 1 3 + .2 lr - 0.0m N m IT In it m m m TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 40 TYPE III 24-HOUR RAINFALL= 4.50 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. IlydroCAD 5.01 001057 (c) 1986-199.8 Applied Microco=uter Systems POND 60 Not described Qin = 7.26 CFS @ 12.17 HRS, VOLUME= .99 AF Qout= 7 .26 CFS @ 12.17 HRS, VOLUME= .99 AF, ATTEN= 0%, LAG= 0.0 MIN ELEVATION AREA INC.STOR CUM.STOR - METHOD (FT) (AC) (AF) (AF) PEAK STORAGE = 0.00 AF PEAK ELEVATION= 0.0 FT FLOOD ELEVATION= 0.0 FT START ELEVATION= 0.0 FT SPAN= 10-20 HRS, dt=.l HRS # ROUTE INVERT —OUTLET DEVICES... POND 60 INFLOW & OUTFLOW Not described METHOD 6.5 PEAK STDR= 0.00 AF 6'" PEAK ELEU= 0 FT 5.5 Qin= 7,26 CFS fo 5'a Qout= 7.26 CFS 4- 4.5 LAG= 0 MIN U 4,3 " 3,5 :3 3.0 CD 1 2,5 2.0 1 .5 1 .0 5 am = N m n Iwo r m TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 41 TYPE III 24-HOUR RAINFALL= 6.40 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. HydroCAD. 5.01 00.1057 c) 1986-1998 Applied MicrocoMputer ..Systems SUBCATCHMENT 1 EXISTING CONDITIONS: DRAINAGE AREA 1 PEAK= 15 .69 CFS @ 12.09 HRS, VOLUME= 1.20 AF ACRES CN SCS TR-20 METHOD .58 98 IMPERVIOUS TYPE III 24-HOUR 3 .86 .70 WOODS/MEADOW: GOOD CONDITION RAINFALL= 6 .40 IN 4 .44 74 SPAN= 10-20 HRS, dt=.l HRS Method Comment Tc (minl TR-55 SHEET FLOW Segment ID: A .5 Smooth surfaces n=.011 L=30' P2=3 .1 in s=.02 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: B 8 .1 Woodland KV=5 L=440' s=.033 1 / 1 V=.91 fps Total Length= 470 ft Total Tc= 8.6 SUBCATCHMENT 1 RUNOFF EXISTING CONDITIONS: DRAINAGE AREA 1 15 AREA= 4.44 AC 14 Tc= 8,6 MIN 13 CN= 74 12 11 SCS TR-20 METHOD 10 TYPE III 24-HOUR 9 RAINFALL= 6.40 IN U 8 PEAK= 15.69 CFS e 12.09 HRS 0 6 5 UOLUME= 1 .20 AF LL 4 3 2 M TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 42 TYPE III 24-HOUR RAINFALL= 6.40 IN Prepared by CHRISTIANSEN & SERGI, INC. 4 Feb 99 HydroCAD 5.01 001057 (c) 1986-1998 Applied Microcomputer Systems SUBCATCHMENT 2 PROPOSED CONDITIONS: DRAINAGE AREA 2 PEAK= 2.63 CFS @ 12.00 HRS, VOLUME= .17 AF ACRES CN SCS TR-20 METHOD .21 98 IMPERVIOUS TYPE III 24-HOUR .28 74 OPEN SPACE RAINFALL= 6 .40 IN .49 84 SPAN= 10-20 HRS, dt=.l HRS Method Comment T(- (min) TR-55 SHEET FLOW Segment ID: A .3 Smooth surfaces n=.011 L=20' P2=3 .1 in s=.02 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: B .4 Unpaved KV=16 .1345 L=60 ' s=.03 1/ 1 V=2.79 fps SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: C 1 .7 Grassed Waterway KV=15 L=200' S=.018 1 /1 V=2.01 fps Total Length= 280 ft Total Tc= 2.4 SUBCATCHMENT 2 RUNOFF PROPOSED CONDITIONS: DRAINAGE AREA 2 2.6 - 2 4 - AREA-- .49 PC Tc= 2.4 MIN 2,2 - CN= 84 2.0 - 1 .8 - SCS TR-20 METHOD TYPE III 24-HOUR 1 ,6 RAINFALL= 6.40 IN U 1 .4 1 .2 PEAK= 2.63 CFS :3 e 12 HRS 0 1 1 .0 UOLUME= 17 OF .2 LL TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 43 TYPE III 24-HOUR RAINFALL= 6.40 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. HydroCAD 5.01 001057 (c.1 1986-.1998 Applied Microcom1puter Systems SUBCATcHmENT 3 PROPOSED CONDITIONS: DRAINAGE AREA 3 PEAK= 4 .18 CFS @ 12.01 HRS, VOLUME= .27 AF ACRES -- CN SCS TR-20 METHOD .45 98 IMPERVIOUS TYPE III 24-HOUR .29 74 OPEN SPACE RAINFALL= 6.40 IN .74 89 SPAN= 10-20 HRS, dt=.l HRS Method rnmmpr- Tr- (min)_ TR-55 SHEET FLOW Segment ID: A .5 Smooth surfaces n=.011 L=30' P2=3 .1 in s=.02 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID. B 0.0 Unpaved KV=16 .1345 L=15' s=.17 1 / 1 V=6.65 fps SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: C 3 .6 Grassed Waterway Kv=15 L=325' S=.01 1 /1 V=1.5 fps Total Length= 370 ft Total Tc= 4.1 SUBCATCHMENT 3 RUNOFF PROPOSED CONDITIONS : DRAINAGE AREA 3 4'0 AREA-- .74 AC Tc= 4. 1 MIN 3,5 CN= 89 3.0 SCS TR-20 METHOD LO TYPE III 24-HOUR (4- 2,5 RAINFALL= 6,40 IN U 2,0 PEAK= 4, 18 CFS e 12.01 HR5 0 1 1 ,5 UOLUME= .27 AF 1 .0 '5 0.0 TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 44 TypE III 24-HOUR RAINFALL= 6.40 IN Prepared by CHRISTIANSEN & SERGI, INC. 4 Feb 99 H droCAD .01 001057 c l 86-19 8 A lied Microcom t r S stems SUBCATcHmENT 4 PROPOSED CONDITIONS: DRAINAGE AREA 4 PEAK= 3 .44 CFS @ 11.99 HRS, VOLUME= .22 AF ACRES CN SCS TR-20 METHOD .49 98 IMPERVIOUS TYPE III 24-HOUR .06 74 OPEN SPACE RAINFALL= 6.40 IN .55 95 SPAN= 10-20 HRS, dt=.l HRS Method Comment _Tc (min) TR-55 SHEET FLOW Segment ID: A .7 Smooth surfaces n=.011 L=50' P2=3 .1 in s=.02 ° / ' SHALLOW CONCENTRATED/UP FLOW Segment ID: B 1.7 Paved KV=20.3282 L=315' s=.024 ' / ' V=3 .15 fps Total Length= 365 ft Total Tc= 2.4 SUBCATCHMENT 4 RUNOFF PROPOSED CONDITIONS: DRAINAGE AREA 4 3.4 3.2 AREA= .55 AC 3.0 Tc= 2.4 MIN 2.8 CN= 95 2.6 r 2.4 SCS TR-20 METHOD Lo 212 TYPE III 24-HOUR �+ 2.0 RAINFALL= 6.40 IN u 1 .8 V 1 .6 PEAK= 3.44 CFS 3 1 .4 e 11 .99 HR5 of 1 .2 UOLUME= .22 OF 1 .0 .8 ,6 .4 .2 0,0m N M m M m TIME (hour5) Data for NORTHEAST STORAGE CORP. , SUTTON STREET ' Page 45 TYPE III 24-HOUR RAINFALL= 6.40 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. H droCAD 5.01 001057. 1986-1998 Appli.ed Microcom1puter Systems SUBCATCHMENT 5 PROPOSED CONDITIONS: DRAINAGE AREA 5 PEAK= 1.56 CFS @ 11.99 HRS, VOLUME= .10 AF ACRES CN SCS TR-20 METHOD .25 98 IMPERVIOUS TYPE III 24-HOUR RAINFALL= 6 .40 IN SPAN= 10-20 HRS, dt=.l HRS Method Comment Tc (min) 5 TR-55 SHEET FLOW Segment ID: A Smooth surfaces n=.011 L=30' P2=3 .1 in s=.02 1.0 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: B Paved Kv=20.3282 L=160' s=.018 1/ ' V=2 .73 fps Total Length= 190 ft Total Tc= 1.5 SUBCATCHMENT 5 RUNOFF PROPOSED CONDITIONS ; DRAINAGE AREA 5 1 •5 AREA= .25 AC 1 .4 Tc= 1 .5 MIN 1 .3 CN= 98 1 .2 1 . 1 SCS TR-20 METHOD j 1 .0 TYPE III 24-HOUR 4 9 RAINFALL= 6.40 IN u 8 PEAK= 1 .56 CFS 7 3 6 e 11 ,99 HRS 0 5 VOLUME= . 10 OF it .4 .3 2 . 1 0.em T N LO m m TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 46 TYPE III 24-HOUR RAINFALL= 6.40 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. HydroCAD 5.01 0010.57 (c). 1986-1998 Applied Microcomputer Systems SUBCATCHMENT 6 PROPOSED CONDITIONS: DRAINAGE AREA 6 PEAK= 4.68 CFS @ 11.99 HRS, VOLUME= .30 AF ACRES CN SCS TR-20 METHOD .74 98 IMPERVIOUS TYPE III 24-HOUR RAINFALL= 6.40 IN SPAN= 10-20 HRS, dt=.l HRS Method CommentTr- (min TR-55 SHEET FLOW Segment ID: A .4 Smooth surfaces n=.011 L=25' P2=3 .1 in s=.02 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: B 1.5 Paved KV=20.3282 L=2601 s=.019 1/ 1 V=2.8 fps Total Length= 285 ft Total Tc= 1.9 SUBCATCHMENT 6 RUNOFF PROPOSED CONDITIONS : DRAINAGE AREA 6 ,1�5 AREA= .74 AC '4 0 Tc= 1 .9 MIN CN= 98 3.5 SCS TR-20 METHOD U) 3,0 TYPE III 24-HOUR (-I- RAINFALL= 6.40 IN U 2.5 PEAK= 4,68 CF5 ::3 2.3 e 11 .99 HRS 0 UOLUME= 30 AF --j 1 .5 1 .0 .5 M M M TIME (hour5) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 47 TYPE III 24-HOUR RAINFALL= 6.40 IN Prepared by CHRISTIANSEN & SERGI, INC. 4 Feb 99 HydrcCAD-5.01 001057 (c). 1986-1998 Applied Microcomputer Systems SUBCATCHMENT 7 PROPOSED CONDITIONS: DRAINAGE AREA 7 PEAK= 1-22 CFS @ 12.01 HRS, VOLUME= .08 AF ACRES -CN SCS TR-20 METHOD .29 74 OPEN SPACE TYPE III 24-HOUR RAINFALL= 6.40 IN SPAN= 10-20 HRS, dt=.l HRS Method rnmMf-nt Tc (min) TR-55 SHEET FLOW Segment ID: A 2 .6 Grass: Short n=.15 L=40' P2=3 .1 in S=.088 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: B .6 Grassed Waterway KV=15 L=100' s=.035 1/ 1 V=2.81 fps Total Length= 140 ft Total Tc= 3 .2 SUBCATCHMENT 7 RUNOFF PROPOSED CONDITIONS : DRAINAGE AREA 7 1 .2 11 AREA= .29 PC Tc= 3.2 MIN 1 ,0 CN= 74 .9 SCS TR-20 METHOD .8 TYPE III 24-HOUR 7 RAINFALL= 6.40 IN U ' .6 PEAK= 1 .22 CF5 .5 e 12,01 HRS 0 1 4 UOLUME= .08 AF Ll- .3 2 3.0 (s) v M M 0) TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 48 TypE III 24-HOUR RAINFALL= 6.40 IN Prepared by CHRISTIANSEN & SERGI, INC. 4 Feb 99 HydroCAD 5.01 001057 (c) 1986-1998 Applied Microcomputer Systems SUBCATCHMENT 8 PROPOSED CONDITIONS: DRAINAGE AREA 8 PEA-K= 2.75 CFS @ 12.10 HRS, VOLUME= .21 AF ACRES CN SCS TR-20 METHOD .35 98 IMPERVIOUS TYPE III 24-HOUR .23 74 OPEN SPACE RAINFALL= 6 .40 IN .58 88 SPAN= 10-20 HRS, dt=.l HRS Method - Comment Tc (min) TR-55 SHEET FLOW Segment ID:A 8 .1 Woods: Light underbrush n=.4 L=50' P2=3 .1 in s=.06 1/1 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: B .8 Paved KV=20.3282 L=125' S=.015 1 / 1 V=2.49 fps S LOW CONCENTRATED/UPLAND FLOW Segment ID:C 1.1 Grassed Waterway KV=15 L=125' s=.015 1 /1 V=1-84 fps Total Length= 300 ft Total Tc= 10.0 SUBCATCHMENT 8 RUNOFF PROPOSED CONDITIONS : DRAINAGE AREA 8 2.6 AREA- .58 AC 2,4 Tc= 10 MIN 2.2 CN= 88 2,0 SCS TR-20 METHOD TYPE III 24-HOUR 1 .6 RAINFALL= 6.40 IN 1 .4 1 .2 PEAK= 2.75 CF5 0 1 .0 @ 12. 1 HR5 UOLUME= 21 OF 6 ,4 .2 - f- M M 0 TIME (hour5) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 49 TYPE III 24-HOUR RAINFALL= 6.40 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. HydroCAD 5.01 001057 (c) 1986-1998 A-pplied Microc,oMputer Systems SUBCATCHMENT 9 PROPOSED CONDITIONS: DRAINAGE AREA 9 PEAK= 3 .18 CFS @ 12.02 HRS, VOLUME= .22 AF ACRES SCS TR-20 METHOD .07 98 IMPERVIOUS TYPE III 24-HOUR .37 74 OPEN SPACE RAINFALL= 6.40 IN .37 70 WOODS: GOOD CONDITION SPAN= 10-20 HRS, dt=.l HRS .81 74 Method Comment Tc (m TR-55 SHEET FLOW Segment ID: A 3 .8 Grass: Short n=.15 L=50' P2=3 .1 in s=-057 .4 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: B Paved KV=20.3282 L=95' s=.035 1 /1 V=3 .8 fps .5 SHALLOW CONCENTRATED/UPLAND FLOW Segment ID: C Woodland Kv=5 L=50' s=.l V=1.58 fps ---------- Total Length= 195 ft Total Tc= 4.7 SUBCATCHMENT 9 RUNOFF PROPOSED CONDITIONS: DRAINAGE AREA 9 3.2 3.0 AREA= .81 PC 2.8 Tc= 4.7 MIN 2,6 CN= 74 2.4 2.2 SCS TR-20 METHOD 0 2.0 TYPE III 24-HOUR 14- RAINFALL= 6.40 IN u 1 .8 1 .6 PEAK= 3. 18 CF5 1 .4 e 12.02 HRS 'C TYPE ORE T S T R PE II I LRFAINF P EAk C L 0 1 .2 UOLUME= 22 AF --j 1 .81 .6 ,4 2 TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 50 TYPE III 24-HOUR RAINFALL= 6.40 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. HydroCAD 5.01 .- 001057 (c) 1986-1998 Aipplied MicrocoMPuter Systems REACH 21 1211 RCP CULVERT UNDER DRIVEWAY Qin = 2.63 CFS @ 12.00 HRS, VOLUME= .17 AF 3'-., LAG= .2 MIN Qout= 2 .56 CFS @ 12.00 HRS, VOLUME= .17 AF, ATTEN= DEPTH END AREA DISCH STOR-IND+TRANS METHOD (FT) (SO-FT) (CFS) 1211 PIPE PEAK DEPTH= .70 FT 0.0 0.0 0.00.1 0.0 .06 n= .015 PEAK VELOCITY= 4.4 FPS .2 .1 .27 LENGTH= 50 FT TRAVEL TIME .2 MIN .3 .2 .60 SLOPE= .01 FT/FT SPAN= 10-20 HRS, dt=.l HRS .7 .6 2.59 .8 .7 3 .02 .9 .7 3 .29 .9 .8 3 .32 1.0 .8 3 .29 1 .0 .8 3 .09 REACH 21 INFLOW & OUTFLOW 12" RCP CULUERT UNDER DRIUEWAY 2.6 12" PIPE 2,4 n=,315 L=50' S=.Bl 2.2 2.0 STOR-IND+TRANS METHOD 1 ,8 UELOCITY= 4.4 FPS LO TRAUEL= .2 MIN 1 .4 Din= 2.63 CFS 1 .2 Qout= 2,56 CFS LAG= .2 MIN 0 -l.I j .2 0.0 in TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 51 TYPE III 24-HOUR RAINFALL= 6.40 IN 4 Feb 99 Prepared by CHRISTIANSEN & SERGI, INC. H droCAD 5.01 001057 c 1986-1998._Alpplied microcomputer Systems REACH 22 GRASS SWALE Qin = 2.56 CFS @ 12.00 HRS, VOLUME= .17 AF Qout= 2.08 CFS ® 12 .11 HRS, VOLUME= .17 AF, ATTEN= 19a, LAG= 6.4 MIN DEPTH END AREA DISCH STOR-IND+TRANS METHOD (FT) (SO-FT) (CFS) 6 ' x 1 ' CHANNEL PEAK DEPTH= 21 FT 0.0 0.0 0.00 SIDE SLOPE= .33 ' / ' PEAK VELOCITY= 1.5 FPS .1 .6 .61 n= .035 .2 1.3 1 .97 LENGTH= 325 FT TRAVEL TIME = 3 .5 MIN .3 2.1 3 .95 SLOPE= .012 FT/FT SPAN= 10-20 HRS, dt=.l HRS .4 3 .1 7.38 .6 4.7 13 .32 .8 6.7 22.47 1 .0 9.0 34.03 REACH 22 INFLOW & OUTFLOW GRASS SWALE 2.4 6' x 1 ' CHANNEL 2.2 SIDE SLOPE= .33 '/' n=.035 L=325' S=.012 2.0 r. 1 .8 11 STOR-IND+TRANS METHOD tO 1 6 11 VELOCITY= 1 .5 FPS 4- 1 .4 I � TRAVEL= 3.5 MIN " 1 .2 j Din= 2.56 CFS 1 1 Qout= 2,08 CF5 O 1 .0 j LAG= 6.4 MIN 1i 6 1 1 t .4 r i .2 m TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 52 TYPE III 24-HOUR RAINFALL= 6.40 IN Prepared by CHRISTIANSEN & SERGI, INC. 4 Feb 99 H dr CAD 5.01 001057 c 1986-1998 A lied Microcom uter S stem s. REACH 23 GRASS SWALE Qin = 5.86 CFS @ 12.02 HRS, VOLUME= .44 AF Qout= 5 .40 CFS @ 12 .06 HRS, VOLUME= .44 AF, ATTEN= 8%, LAG= 2 .0 MIN DEPTH END AREA DISCH (FT) (SO-FT) (CFS) 6 ' x 1 ' CHANNEL STOR-IND+TRANS METHOD 0.0 0.0 0.00 SIDE SLOPE= .33 '/ ' PEAK DEPTH= .27 FT .1 .6 1.01 n= .035 PEAK VELOCITY= 3 .0 FPS .2 1.3 3 .27 LENGTH= 150 FT TRAVEL TIME = .8 MIN .3 2.1 6.54 SLOPE= .033 FT/FT SPAN= 10-20 HRS, dt=.l HRS .4 3 .1 12.24 .6 4 .7 22.09 .8 6.7 37.26 1.0 9.0 56 .43 REACH 23 INFLOW & OUTFLOW GRASS SWALE 5.5 6' x 1 ' CHANNEL 5.0 SIDE SLOPE= .33 '/' n=.035 L=150' S=.033 4.5 4.0 STOR-IND+TRANS METHOD UELOCITY= 3 FPS c� 3.5 TRAVEL= .8 MIN U 3.0 Qin= 5.86 CFS 3 2.5 Qout= 5.40 CFS 00 2.0 LAG= 2 MIN Ll- 1 .5 1 .0 .5 m rn m TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 53 TYPE III 24-HOUR RAINFALL= 6.40 IN Prepared by CHRISTIANSEN & SERGI, INC. 4 Feb 99 H droCAD 5.01 001057 (cl. 198 -1998 A lied Microco uter S stems REACH 24 1211 RCP DRAIN Qin = 3 .44 CFS @ 11.99 HRS, VOLUME= .22 AF Qout= 3 .22 CFS @ 12.00 HRS, VOLUME= .22 AF, ATTEN= 6`0, LAG= .6 MIN DEPTH END AREA DISCH (FT) (SO-FT) (CFS) 12" PIPE STOR-IND+TRANS METHOD 0.0 0.0 0.00 PEAK DEPTH= .67 FT .1 0.0 .09 n= .013 PEAK VELOCITY= 6 .0 FPS .2 .1 .37 LENGTH= 185 FT TRAVEL TIME = .5 MIN .3 .2 .83 SLOPE= .014 FT/FT SPAN= 10-20 HRS, dt=.l HRS .7 .6 3 .53 .8 .7 4.12 .9 .7 4.49 .9 .8 4.53 1.0 .8 4 .49 1.0 .8 4.22 REACH 24 INFLOW & OUTFLOW 12'' RCP DRAIN 3.4 3.2 12" PIPE 3.0 n=.013 L=185' S=.014 2.8 2.6 STOR-IND+TRANS METHOD 2.4 UELOCITY= 6 FPS 2,2 TRAUEL= .5 MIN �+ 2.0 u 1 .8 Qin= 3.44 CFS 1 .6 Qcut= 3.22 CFS 1 .4 LAG= .6 MIN © 1 .2 1 .0 .8 .6 .4 .2 TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 54 TYPE III 24-HOUR RAINFALL= 6.40 IN Prepared by CHRISTIANSEN & SERGI, INC. 4 Feb 99 HydroCAD 5 01 001057 (c) 1986-1998 Applied Microcomputer Systems REACH 25 18" RCP DRAIN Qin = 4.77 CFS @ 12 .00 HRS, VOLUME= .32 AF Qout= 4.59 CFS @ 12 .01 HRS, VOLUME= .32 AF, ATTEN= 4%, LAG= .5 MIN DEPTH END AREA DISCH (FT) (SO-FT) (CFS) 18" PIPE STOR-IND+TRANS METHOD 0.0 0.0 0.00 PEAK DEPTH= .86 FT .2 .1 .16 n= .013 PEAK VELOCITY= 4.5 FPS .3 .3 .65 LENGTH= 100 FT TRAVEL TIME = .4 MIN .5 .4 1 .45 SLOPE= .005 FT/FT SPAN= 10-20 HRS, dt=.l HRS 1.1 1.3 6.22 1.2 1.5 7.26 1.4 1.7 7.92 1.4 1.7 7.99 1.5 1.8 7.92 1 .5 1.8 7.43 REACH 25 INFLOW & OUTFLOW 18" RCP DRAIN 4.5 18" PIPE 4.0 n=.013 L=100' S=.005 3.5 STOR-IND+TRANS METHOD UELOCITY= 4.5 FPS 3,0 TRAUEL= .4 MIN 4- 2.5 Qin= 4.77 CFS Qout= 4.59 CF5 2.0 LAG= .5 MIN O -� 1 .5 1 .0 .5 0.0m TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 55 TYPE III 24-HOUR RAINFALL= 6.40 IN Prepared by CHRISTIANSEN & SERGI, INC. 4 Feb 99 HydroCAD 5.01 001057 (c) 1986-1998 Applied Microcomputer Systems REACH 26 12" RCP DRAIN Qin = 4.68 CFS @ 11.99 HRS, VOLUME= .30 AF Qout= 4 .65 CFS @ 11 .99 HRS, VOLUME= .30 AF, ATTEN= 1--., LAG= .1 MIN DEPTH END AREA DISCH (FT) (SO-FT) ...(CFS) 1211 PIPE STOR-IND+TRANS METHOD 0.0 0.0 0.00 PEAK DEPTH= .70 FT .1 0.0 .12 n= .013 PEAK VELOCITY= 7.9 FPS .2 .1 .48 LENGTH= 25 FT TRAVEL TIME = .1 MIN .3 .2 1.08 SLOPE= .024 FT/FT SPAN= 10-20 HRS, dt=.l HRS .7 .6 4.62 .8 .7 5.40 .9 .7 5.88 .9 .8 5.94 1 .0 .8 5.88 1 .0 .8 5.52 REACH 26 INFLOW & OUTFLOW 12'' RCP DRAIN 4,5 12" PIPE 4.0 n=.313 L=25' S=.024 3.5 STOR-IND+TRANS METHOD UELOCITY= 7.9 FPS 3.0 TRAUEL= . 1 MIN L3 2.5 Qjn= 4.68 CFS 2.0 Gout= 4.65 CFS 0 LAG= l MIN -j 1 .5 LL 1 .0 .5 TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 56 TXPE III 24-HOUR RAINFALL= 6.40 IN Prepared by CHRISTIANSEN & SERGI, INC. 4 Feb 99 H droCAD 5.01 001057 c 1986-1998 applied Microcom ter Systems REACH 27 181, RCP DRAIN Qin = 9.22 CFS @ 12.00 HRS, VOLUME= .62 AF Qout= 9.17 CFS @ 12 .00 HRS, VOLUME= .62 AF, ATTEN= 1%, LAG= .1 MIN DEPTH END AREA DISCH (FT) (SO-FT) (CFS) 18" PIPE STOR-IND+TRANS METHOD 0.0 0.0 0.00 PEAK DEPTH= 1.09 FT .2 .1 .22 n= .013 PEAK VELOCITY= 6 .7 FPS .3 .3 .92 LENGTH= 20 FT TRAVEL TIME = 0.0 MIN .5 .4 2.06 SLOPE= .01 FT/FT SPAN= 10-20 HRS, dt=.l HRS 1 .1 1.3 8.79 1.2 1.5 10.27 1 .4 1.7 11.20 1.4 1.7 11.30 1 .5 1.8 11 .19 1 .5 1 .8 10.50 REACH 27 INFLOW & OUTFLOW 18'' RCP DRAIN 9,0 18" PIPE 8.5 g e n=.013 L=20' S=.01 7 ,5 7.0 STOR-IND+TRANS METHOD 6.5 UELOCITY= 6.7 FPS 6,0 TRAVEL= 0 MIN c4- 5.5 u 5.0 Qin= 9.22 CFS 4.5 Qout= 9. 17 CFS 30 4.0 LAG= . 1 MIN --j 3.0 1i- 2.5 2.0 1 ,5 1 .0 .5 0,0m v m to r m m m TIME (hours) Data for NORTHEAST STORAGE CORP. , SIJTTON STREET Page 57 TYPE III 24-HOUR RAINFALL= 6.40 IN Prepared by CHRISTIANSEN & SERGI, INC. 4 Feb 99 HrdroCAD 5.01 001057 (c) 1986-1998 Applied Microcomputer Systems- POND 40 DETENTION AREA 1 Qin = 15.56 CFS @ 12.01 HRS, VOLUME= 1.14 AF Qout= 10.61 CFS @ 12 .14 HRS, VOLUME= 1 .12 AF, ATTEN= 320, LAG= 7.8 MIN ELEVATION AREA INC.STOR CUM.STOR STOR-IND METHOD (FT) (SF) (CF) (CF) PEAK STORAGE = 10349 CF 141.0 2670 0 0 PEAK ELEVATION= 143 .8 FT 142.0 3380 3025 3025 FLOOD ELEVATION= 144.0 FT 143 .0 4125 3753 6778 START ELEVATION= 141 .0 FT 144.0 4920 4523 11300 SPAN= 10-20 HRS, dt=.l HRS Tdet= 25.7 MIN (1.12 AF) ROUTE INVERT OUTLET DEVICES - 1 P 141.0' 10" ORIFICE/GRATE Q=.6 PI r"2 SQR(2g) SQR(H-r) 2 P 142.01 60 DEG V-NOTCH WEIR Q=2.53 TAN(Theta/2) H"2 .5 POND 40 INFLOW & OUTFLOW DETENTION AREA 1 15 14 STOR-IND METHOD PEAK STOR= 10349 CF 10 PEAK ELEU= 143.8 FT 12 11 Qin= 15,56 CFS n 10 ti Dout= 10.61 CFS 4- g � 1 LAG= 7.8 MIN t v 8 tl 7 ff t � 6 1 O f! L 4 - 3 i 2 am l^ N r a �0 r w U m TIME (hours) Data for NORTHEAST STORAGE CORP. , SGTTON STREET Page 58 TYPE III 24-HOUR RAINF'ALL= 6.40 IN Prepared by CHRISTIANSEN & SERGI, INC. 4 Feb 99 HydroCAD 5 Ol 001057 (c) 1986-1998 Applied Microcomputer Systems POND 50 DETENTION AREA #2 Qin = 2.75 CFS @ 12 .10 HRS, VOLUME= .21 AF Qout= 1.21 CFS @ 12.37 HRS, VOLUME= .19 AF, ATTEN= 560, LAG= 16.1 MIN ELEVATION AREA INC.STOR CUM.STOR STOR-IND METHOD (FT) (SF) (CF) (CF) PEAK STORAGE = 3702 CF 151.0 2525 0 0 PEAK ELEVATION= 152 .2 FT 152.0 3170 2848 2848 FLOOD ELEVATION= 153 .0 FT 153 .0 3925 3548 6395 START ELEVATION= 151.0 FT SPAN= 10-20 HRS, dt=.l HRS Tdet= 94 MIN ( .19 AF) ROUTE INVERT OUTLET DEVICES 1 P 151.0' 30 DEG V-NOTCH WEIR Q=2.61 TAN(Theta/2) H"2.5 POND 50 INFLOW & OUTFLOW DETENTION AREA 42 2.6 STOR-IND METHOD 2.4 PEAK STDR= 3702 CF 2.2 PEAK ELEU= 152.2 FT 2.0 Qin= 2,75 CFS 1 ,8 Qout= 1 .21 CFS `+- 1 .6 LAG= 16. 1 MIN U ,-/ 1 .4 3 1 ,2 1 \ O 1 .0 t \ J 8 l .6 1 .2 / - _ e,am N m m m 4 N TIME (hours) Data for NORTHEAST STORAGE CORP. , SUTTON STREET Page 59 TYPE III 24-HOUR RAINFALL= 6.40 IN Prepared by CHRISTIANSEN & SERGI, INC. 4 Feb 99 HydroCAD 5 01 001057 (c) 1986-1998 Applied Microcomputer Systems POND 60 Not described Qin = 13 .62 CFS @ 12.13 HRS, VOLUME= 1.53 AF Qout= 13 .62 CFS @ 12.13 HRS, VOLUME= 1.53 AF, ATTEN= 0`., LAG= 0.0 MIN ELEVATION AREA INC.STOR CUM.STOR - METHOD (FT) (AC) (AF) (AF) PEAK STORAGE = 0.00 AF PEAK ELEVATION= 0.0 FT FLOOD ELEVATION= 0.0 FT START ELEVATION= 0.0 FT SPAN= 10-20 HRS, dt=.l HRS # ROUTE INVERT OUTLET DEVICES -- POND 60 INFLOW & OUTFLOW Not described 13 - METHOD 12 PEAK STOR= 3.00 AF 11 PEAK ELEU= 0 FT 10 Qin= 13,62 CFS g Qout= 13.6E CFS t* 8 LAG= 0 MIN 7 3 6 - 0 5 It 4 3 2 1 am m m 0 TIME (hours)