Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
Stormwater Report - 80 FLAGSHIP DRIVE 8/1/1995
HYDROLOGIC ANALYSIS OF CENTRAL METAL FINISHING August 1995 Prepared for: Central Metal Finishing 80 Flagship Drive North Andover,MA 01845 Prepared by: Thomas E.Neve Associates, Inc. 447 Old Boston Road US Route#1 Topsfield, MA 01983 INDEX Page Hydrologic Analysis Preface ................................................. 3-4 Hydrologic Summary.............................................................. 5 USGS Topography Map ........................................................ 6 USDASoils Map ................................................................... 7 Pre-Development Routing Diagram ...................................... 8 Pre-Development 1-year storm.............................................. 9-14 Pre-Development 2-year storm.............................................. 15-20 Pre-Development 10-year storm............................................ 21-26 Pre-Development 100-year storm.......................................... 27-32 Post-Development Routing Diagram..................................... 33 Post-Development 1-year storm ............................................ 34-57 Post-Development 2-year storm ............................................ 58-81 Post-Development 10-year storm .......................................... 82-105 Post-Development 100-year storm ........................................ 106-129 Appendix................................................................................ 130-141 Page 3 HYDROLOGIC ANALYSIS Central Metal Finishing is located at 80 Flagship Drive in the North Andover Business Park. There already exists on the site a building with paved and gravel parking with no drainage structures. The paved parking is curbed and directed toward the street where it exits onto Flagship Drive and flows approximately 160' westerly to a catch basin where it enters the drainage system under Flagship Drive. The proposed additional development of this lot consists of a 9,500 sf addition to the existing building, more paved parking and the installation of catch basins and a detention pond to handle the increased runoff. The site consists of moderate to poorly drained soils. Classification of soils were taken from the Soil Conservation Soil Maps issued in 1981. The purpose of this analysis is to design an onsite drainage system which complies with the Planning Board criteria while limiting off-site runoff discharge. This analysis was performed using the U.S. Soil Conservation Service (S.C.S) method of analysis contained in Technical Release #20 (TR-20) published by the U.S. Conservation Service. The model used for this calculation is referred to as Hydro-Cad. Hydro-Cad is a computer aided design program for analyzing the hydrology and hydraulics of storm water runoff. It utilizes the latest techniques of both fields to accurately predict the consequences of any given storm event. This analysis allows the engineer to verify that a given drainage system is adequate for the area under consideration, and further allows the engineer to predict where flooding or erosion are most likely to occur. This model was used to analyze the storm drainage system designed for the development in order to demonstrate that the piping network is in compliance with the Subdivision Rules and Regulations. It also analyzes the one proposed detention pond. Three design points were studied on this property: Design Point #1 is where overland flow exits the property onto Flagship Drive on the northerly side of the site. In the post developed condition design point #1 is still in the same location, however, at this location our new drainage ties into the existing drainage system on Flagship Drive and overland flow from Sub. 5 exits the property onto Flagship Drive. Hydrologic Summary Central Metal Finishing Page 4 Design Point#2 is where overland flow enters the wetland at the south westerly corner of the property. Design Point#3 is located on the westerly side of the property where overland flow exits the property. Design Point#1 was chosen for ease of analysis, this location is where a major portion of the site discharges onto Flagship Drive and also discharges into the existing drainage system. Adding the additional time required for the flow to get from Design-Point #1 to the catch basin 160' away would result-in an increase in the time of concentration of Sub. 1 (pre developed) to 8.6 min., an increase of 1.2 min. This, in turn, would result in the following peak runoff rates for the 1, 2, 10 and 100 year storm events respectively: 2.3, 3.0, 5.4 and 8.6 cfs (see appendix pages 137-141). The Hydrologic Summary on the following page shows the runoff values at each design point, total flow off site and any net increase in flow off site. By reviewing this summary, there has been no increase in runoff during the 1 year storm and a decrease in runoff for the 2, 10 and 100 year storm events. By examining the data generated for Sub. 1 (pre developed) using a time of concentration to where the flow enters the existing drainage system we still have a decrease in runoff for the 2, 10 and 100 year storm events. However, there is an increase of 0.1 cfs into the existing drainage system during the 1 year storm event. This amount is considered negligible and will not have any negative impacts on the drainage systems functions during the 1 year storm. Also, the post developed runoff values for Sub. 5 were not calculated using a time of concentration to where the flow enters the existing drainge system, which would have increased the time of concentration for that subcatchment by 1.2 minutes. Mitigation is provided through the use of detention, interception and increase times of concentration. See Appendix, pages 130-136, for average times of concentration calculations for all subcatchments. Page 5 HYDROLOGIC SUMMARY Post Developed O [All values in CFS] Storm Events Design - Point 1 2 10 100 1 2.4 (2.5) 3.1 ( 3.1) 5.7 (5.3) 9.0 (8.0) 2 0.3 (0.3) 0.5 (0.4) 1.3 (1.1) 2.4 (2.0) 3 0.2 (0.1) 0.3 (0.2) 0.6 (0.4) 1.0 (0.6) Totals 2.9 (2.9) 3.9 (3.7) 7.6 (6.8) 12.4 (10.6) Increase (0) (-0.2) (-0.8) (-1.8) Pond Summary Storm Pond 1 Flood Elevation 100 yr. 251.4 10 yr. 250.3 2 yr. 249.3 1 yr. 249.0 U. . Topography Map co � , � ����■ice-;;�m ' ; "���`��"+�",�� R��• %-• � /� - � C - \�. � 4 ,fir�;�:_✓ \ " �� f � 238'x'%i�`�'// �\�� � - + - �, �48 ���"-• - \�—mil — qw tL �,jo" 4 I+ /� e7!~•�28 _i I� i `-- s1..-- ".41..._�f• `_�'���r•'$,�" -��\-•L�f •, ♦�\\ I♦ _ lk / 1.. •� i •.J a� �. arm. — \ 'J, y r t • t I L• $iT 0. 2 "�11L..• -- _i � —° -- _ ,.sill+.• ' ��// 20( LL— a t:. ■ ' ♦ y ► ✓ _ ..� �` .sir, .— , .��, .. .�li. I� :. so v • ; .� �; a r��kO - 0 I • 'off `\\• � � •\♦�0 _v I )!L`' _�-"-- �1 1 I Ql- '1 , I�-�-� �'�-_____� � I \ �j f/ 1 •_�1llc.� •\J —�\ ��. �..1� �L I �,.1.'I ��� •i��� '!.' ,i�\1 / ^�Jam] /'�\-� LI'' _1 U.S.D.A. it Map � WrA v RdA PbC PcE j \t PbC Se 1 \ SrB HfD SrB Wg 1 S a. WrA �y6 W,� � WaB WrA LID WrB PG m �.' SrB \ •\ •� � W g r C\ B S M MmC e• RIB W ;r6 WrA WE RdA WeA MC PcE WsC PaD �<P WrB RdA PaC CL YPI Wg ILL W rC PaD RIA PaB - \ Se PaC PcE PaB \CrB Wh RdA 4 PbD R/e PaB RIB ShB WrB PG \Y WsB WrB- PaC Wh WrB WrB WSS \ MD WSB PaB ac HfC Hf r \ �9ews PaC PbD P.aC Y PbC PaB l'J1TE ` Pb6 \( RIB Y ' Wh WrA �uC a r WsB Ws� 7 w m WsC RIA PaD Ur , CoC ` MD Ws8 -, WsB Ws ,Cr L'Or- � �: �f 75 ��'r RIB ry WSB 'PaB '-�' �RIP� ( ,•.A� -•- 'd :�- 'r. ` s';tail'€..vc' •L'r� .s- jr v RIA Y } , 1 � UD Gl, M,, � � \ .*, +4 :••�r• "tier•' ,. �� s 01 }�j 11 1•.i�R1B: a :�-z .,z •�� •z �WtB f_MC �, ...`rs,",•h v,�a,•,�, y,;t .�•;fi.lR IC -.•, �4' ...,h Pc �.. i,•� L,,. 1• •J`s 'T' .:,M56, _ `� s �}V, �7� ' 'O >r`� 'r•.�+r♦r ,5'. *w , k 'S ?y � , � i}1�,�t ,�c� Oc rt L ' 4� �4.../p "f- �t ' 3✓. Mob :1C�-G �_':+ i.K rD. f,. t1 ts/,Y =.�+1 +�l��ti fit, '} �� U - i �� i j' r� .3 �-f } ' i+.:�t RI . p .r's- _ s •!r_n, :.i�r - , ,/-�� r „-+. "± ti yam, .r < �? a r^�,.. a ', t R Sr•StB °i�" �, CrC,� i.. S MC ^t >x LPA Pb6 P r ,�`• r _ CtiC' / �'' 'w v ` •UD �,i ,� .G a`'': r .. R16 Gt'�. 'w.�„�_ s;. ,1/ -4•� �'�ia:r�?• ��"` :3.ii.;�ivt>'; RIB' OL'r' ` (y►C a,{:� 'HILL r Pc 'RIB, i,� RIB ,`l .;, r'"r•n, e� , ,� MD - rr WsB WtC , WrA z 9 ' .; i �waler PbB ��}x ?�t*;?�• '.: '� \. ,•'. Ems• t'i `^C _+ ... 'r Data for Central Metal Finishing - Pre Developed Page 8 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HvdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems WATERSHED ROUTING _____________________________________________________________ 1 2 p.P. 1 D.P. i OSUBCATCHMENT ❑ REACH APOND LINK i 0E51(-IN POINT i 'i Data for Central Metal Finishing - Pre Developed Page 9 TYPE III 24-HOUR RAINFALL= 2 . 6 IN ( 1 VE.AR SVORM�) Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 1 Area Flowing to Design Point #1 PEAK= 2 .4 CFS @ 12 . 09 HRS, VOLUME= . 15 AF ACRES CN SCS- TR-20 METHOD . 73 98 Pavement, Roof & Walkways TYPE III 24-HOUR . 53 74 Open Space, Good, Soil C RAINFALL= 2 . 6 IN . 06 80 Open Space, Good, Soil D SPAN= 8-17 HRS, dt= . 03 HRS . 02 70 Woods, Good, Soil C . 09 72 Woods & Grass, Good, Soil C . 09 89 Gravel Area . 01 91 Gravel Area 1 . 53 87 Method Comment Tc (min) DIRECT ENTRY Average 7 .4 SUBCATCHMENT 1 RUNOFF Area Flowing to Design Point # 1 2 . 2 AREA= 1 . 53 AC Tc= 7 .4 MIN 2.0 CN= 87 1 .8 SCS TR-20 METHOD TYPE III 24-HOUR ^ 1 .6 RAINFALL= 2.6 IN �+ 1 . 4 PEAK= 2 . 4 CFS U @ 12 .09 HRS 1 . 2 VOLUME= . 15 AF 3 1 .0 O 1 . 8 LL . 6 .4 2 0 0m in m n m 0 m in m Ln m m U) m in m in m M CO M Q) m m �Tl V Cf In Ln t0 lD (� TIME ( hours ) Data for Central Metal Finishing - Pre Developed Page 10 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 1 -RUNOFF PEAK= 2 .4 CFS @ 12 . 09 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 _ 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 G. 0 0 .-0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 . 1 . 1 10 .40 . 1 . 1 . 1 . 1 . 1- . 1 _ _ . 1 . 1 . 1 . 1 10 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 l . 1 11 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 .30 . 1 . 1 . 1 . 2 . 2 . 2 . 2 . 2 . 2 . 2 11 . 60 . 2 . 3 . 3 .4 . 4 . 5 . 5 . 6 . 7 . 7 11 . 90 . 8 . 9 1 . 0 1 . 3 1 . 7 2 . 1 2 . 3 2 . 3 2 . 1 1 . 8 12 . 20 1 . 6 1 .4 1 . 3 1 . 2 1 . 1 1 . 0 . 9 . 8 . 8 . 7 12 . 50 . 6 . 5 . 5 .4 . 4 . 4 . 3 . 3 . 3 . 3 12 . 80 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 2 . 2 13 . 10 . 2 . 2 . 2 . 2 . 2 .2 . 2 . 2 . 2 . 2 13 .40 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 13 . 70 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 00 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 .30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 .80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 .40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 .70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 17 . 00 . 1 Data for Central Metal Finishing - Pre Developed Page 11 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 2 Area flowing to Design Point #2 PEAK= . 3 CFS @ 12 . 21 HRS, VOLUME= . 03 AF ACRES CN SCS TR-20 METHOD . 03 80 Open Space, Good, Soil D TYPE III 24-HOUR . 48 70 Woods, Good, Soil C RAINFALL= 2 . 6 IN . 18 77 Woods, Good, Soil D SPAN= 8-17 HRS, dt= . 03 HRS . 69 72 Method Comment Tc (min) TR-55 SHEET FLOW A to B 13 . 2 Woods : Light underbrush n= . 4 L=100 ' P2=3 . 1 in s= . 07 SHALLOW CONCENTRATED/UPLAND FLOW B to C . 7 Unpaved Kv=16 . 1345 L=160 ' s=. 053 ' / ' V=3 . 71 fps Total Length= 260 ft Total Tc= 13 . 9 SUBCATCHMENT 2 RUNOFF Area flowing to Design Point #2 . 30 28 AREA= 69 AC Tc= 13 . 9 MIN 26 CN= 72 24 SCS TR-20 METHOD . 22 TYPE III 24-HOUR 20 RAINFALL= 2.6 IN �+ . 18 PEAK= . 3 CFS U 16 @ 12 .21 HRS VOLUME= . 03 AF . 14 30 . 12 1 10 08 . 06 . 04 . 02 0. 00 CS] in m in m Ln m to m in m m �n m �n m in m 00 m m m m m - - N N M M V IT Ln Ln 0 0 r TIME ( hours ) Data for Central Metal Finishing - Pre Developed Page 12 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 2 RUNOFF PEAK= . 3 CFS @ 12 . 21 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 .°0 0 . 0- 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 90 0 . 0 0 . 0 . 1 . 1 . 1 . 1 . 2 . 2 . 3 . 3 12 . 20 . 3 . 3 . 3 . 3 . 3 . 2 . 2 . 2 . 2 . 2 12 . 50 . 2 . 2 . 2 . 1 . 1 . 1 . 1 . 1 . 1 . l 12 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 13 . 40 . 1 . 1 . 1 . 1 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 .30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Pre Developed Page 13 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 3 Area Flowing to Design Point #3 PEAK= . 2 CFS @ 12 . 03 HRS, VOLUME= . 01 AF ACRES CN SCS TR-20 METHOD . 15 80 Open Space, Good, Soil D TYPE -III 24-HOUR . 02 77 Woods, Good, Soil D -RAINFALL= 2 . 6 IN . 17 80 SPAN= 8-17 HRS, dt= . 03 HRS Method Comment Tc (min) DIRECT ENTRY Average 2 . 6 SUBCATCHMENT 3 RUNOFF Area Flowing to Design Point #3 20 AREA= 17 AC 18 Tc= 2 . 6 MIN CN= 80 . 16 SCS TR-20 METHOD TYPE III 24-HOUR ^ . 14 RAINFALL= 2 . 6 IN Ci_ 12 PEAK= . 2 CFS U @ 12 . 03 HRS v 10 VOLUME= .01 AF 3 CD . 08 J L� . 06 . 04 . 02 0. 00 CS) Ln m fn m Ln m in m in m Ln m to m Ln m in m OD m 01 Q1 m m — N N M M V V' Ln Ln l0 l0 f'- TIME ( hours ) Data for Central Metal Finishing - Pre Developed Page 14 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 3 RUNOFF PEAK= . 2 CFS @ 12 . 03 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 .-90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 .10 0 . 0 11 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 11 . 90 . 1 . 1 . 1 . 2 . 2 . 2 . 2 . 1 . 1 . 1 12 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 0 . 0 0 . 0 12 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 12 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 .20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Pre Developed Page 15 TYPE III 24-HOUR RAINFALL= 3 . 1 IN ( a YEAR S-°oRM) Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 1 Area Flowing to Design Point #1 PEAK= 3 . 1 CFS @ 12 . 09 HRS, VOLUME= . 20 AF ACRES _ CN SCS TR-20 METHOD . 73 98 Pavement, Roof & Walkways TYPE III 24-HOUR . 53 74 Open Space, -Good, Soil C RAINFALL= 3 . 1 IN . 06 80 Open Space, Good, Soil D SPAN= 8-17 HRS, dt= . 03 HRS . 02 70 Woods, Good, Soil C . 09 72 Woods & Grass, Good, Soil C . 09 89 Gravel Area . 01 91 Gravel Area 1 . 53 87 Method Comment Tc (min) DIRECT ENTRY Average 7 . 4 SUBCATCHMENT 1 RUNOFF Area Flowing to Design Point # 1 3 0 AREA= 1 53 AC 2. 8 Tc= 7 . 4 MIN 2.6 CN= 87 2. 4 SCS TR-20 METHOD 2.2 TYPE III 24-HOUR RAINFALL= 3. 1 IN 2 .0 1 .8 PEAK= 3 . 1 CFS U e 12 .09 HRS `--' 1 .6 UOLUME= . 20 AF 3 1 .4 CD 1 .2 J 1 .0 LL 8 6 4 . 2 0.0 m In m In m In m In m In m in m in m in m n 0 00 00 0) 0) m m N N n7 M 'q- '' Ln In t0 l0 f- TIME ( hours ) Data for Central Metal Finishing - Pre Developed Page 16 TYPE III 24-HOUR RAINFALL= 3 .1 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems - SUBCATCHMENT 1 RUNOFF PEAK= 3 . 1 CFS @ 12 . 09 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0.. 0 0 . 0 0 . 0 -8 .30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0_ 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 ` 0 . 0 0. 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 . 1 . 1 . 1 9 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 .40 . 1 . 1 .'1 . 1 . 1 . 1 . 1 l 1 1 10 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 l l 1 11 . 00 . 1 . 1 . 1 . 1 . 2 . 2 . 2 . 2 . 2 . 2 11 . 30 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 3 . 3 . 3 11 . 60 . 3 .4 .4 . 5 . 6 . 7 . 7 . 8 . 9 1 . 0 11 . 90 1 . 1 1 . 2 1 .4 1 . 7 2 . 2 2 . 8 3 . 1 3 . 0 2 . 7 2 . 3 12 . 20 2 . 0 1 . 8 1 . 6 1 . 5 1 . 4 1 . 3 1 . 2 1 . 1 1 . 0 . 9 12 . 50 . 8 . 7 . 6 . 5 . 5 . 5 .4 . 4 . 4 .4 12 . 80 .4 . 4 .4 .4 . 3 . 3 . 3 . 3 . 3 . 3 13 . 10 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 .3 13 .40 . 3 . 3 . 3 . 3 . 2 . 2 .2 . 2 . 2 . 2 13 . 70 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 00 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 14 .30 . 2 . 2 . 2 . 2 . 2 . 2 .2 . 2 . 2 .2 14 . 60 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 14 . 90 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 1 15 .20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 .40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 16 .70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 17 . 00 . 1 Data for Central Metal Finishing - Pre Developed Page 17 TYPE III 24-HOUR RAINFALL= 3 .1 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HvdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 2 Area flowing to Design Point #2 PEAK= . 5 CFS @ 12 . 20 HRS, VOLUME= . 04 AF ACRES CN SCS TR-720 METHOD . 03 80 Open Space, Good, Soil D TYPE III 24-HOUR . 48 70 Woods, Good, Soil C RAINFALL= 3 . 1 IN . 18 77 Woods, Good, Soil D SPAN= 8-17 HRS, dt= . 03 HRS . 69 72 Method Comment Tc (min) TR-55 SHEET FLOW A to B - 13 . 2 Woods : Light underbrush n= . 4 L=100 ' P2=3 . 1- in s= . 07 SHALLOW CONCENTRATED/UPLAND FLOW B to C . 7 Unpaved Kv=16 . 1345 L=160 ' s= . 053 ' / ' V=3 . 71 fps Total Length= 260 ft Total Tc= 13 . 9 SUBCATCHMENT 2 RUNOFF Area flowing to Design Point #2 45 AREA= . 69 AC Tc= 13 .9 MIN CN= 72 . 40 SCS TR-20 METHOD 35 TYPE III 24-HOUR RAINFALL= 3. 1 IN C+- . 30 PEAK= .5 CFS u @ 12 .2 HRS 25 UOLUME= .04 AF 3 0 . 20 1 15 10 . 05 0 . 00 CS] in m LO m in m Ln m in m Ln m in m in m in m m 00 0) Q) C9 m — — N N M M 'J' V Ul Ln ',0 0 r' TIME ( hours ) Data for Central Metal Finishing - Pre Developed Page 18 TYPE III 24-HOUR RAINFALL= 3 .1 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 2 RUNOFF PEAK= . 5 CFS @ 12 . 20 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0-. 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 .0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 .20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 .40 0 . 0 0 . 0 0-. 0 - 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 70 0 . 0 - 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 .30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 . 1 11 . 90 . 1 . 1 . 1 . 2 . 2 . 3 . 3 . 4 . 5 . 5 12 .20 . 5 . 5 . 5 .4 .4 .4 .4 . 3 . 3 .3 12 . 50 . 3 . 3 . 2 . 2 . 2 . 2 . 2 . 1 . 1 . l 12 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .1 13 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .l 13 .40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .1 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 60 . 1 . 1 . 1 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 .20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 .50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Pre Developed Page 19 TYPE III 24-HOUR RAINFALL= 3 .1 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 3 Area Flowing to Design Point #3 PEAK= . 3 CFS @ 12 . 03 HRS, VOLUME= . 02 AF ACRES CN SCS TR-20 METHOD . 15 80 Open Space, Good, Soil D TYPE III 24-HOUR . 02 77 Woods, Good, Soil D RAINFALL= 3 . 1 IN . 17 80 SPAN= 8-17 HRS, dt= . 03 HRS Method Comment Tc (min) DIRECT ENTRY Average 2 . 6 SUBCATCHMENT 3 RUNOFF Area Flowing to Design Point #3 28 AREA= 17 AC 26 Tc= 2 . 6 MIN 24 CN= 80 22 SCS TR-20 METHOD TYPE III 24-HOUR ^ 20 RAINFALL= 3. 1 IN �+ 18 PEAK= .3 CFS U . 16 @ 12 .03 HRS `-� 14 UOLUME= .02 AF 3 . 12 CD J 10 L- 08 . 06 . 04 02 e 00 mLn mLn mLn mLn mLn m L, mn mLn 0 L m m C0 0) 01 m m - N N m m IT V to n W W Il- TIME ( hours ) Data for Central Metal Finishing - Pre Developed. Page 20 TYPE III 24-HOUR RAINFALL= 3 .1 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 3 - RUNOFF PEAK= .3 CFS @ 12 . 03 HOURS - HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8_.30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 .90 0 .10 0 . 0- 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 .10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 .70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 .30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 60 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 . 1 . 1 . 1 . 1 11 . 90 . 1 . 1 . 2 . 2 . 3 . 3 . 2 . 2 . 1 . 1 12 .20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 12 .50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 12 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 .10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 .30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 .20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Pre Developed Page 21 TYPE III 24-HOUR RAINFALL= 4 . 8 IN (1®YEAR S-rop m, Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 1 Area Flowing to Design Point #1 PEAK= 5 . 7 CFS @ 12 . 09 HRS, VOLUME= . 37 AF ACRES CN- SCS TR-20 METHOD . 73 98 Pavement, Roof &Walkways TYPE III 24-HOUR . 53 74 Open Space, Good; Soil C RAINFALL= 4 . 8 IN . 06 80 Open Space, Good, Soil D SPAN= 8-17 HRS, dt= . 03 HRS . 02 70 Woods, Good, Soil C . 09 72 Woods & Grass, Good, Soil C . 09 89 Gravel Area . 0-1 91 _ Gravel Area 1 . 53 87 Method Comment Tc (min) DIRECT ENTRY Average 7 .4 SUBCATCHMENT 1 RUNOFF Area Flowing to Design Point # 1 5 . 5 AREA= 1 . 53 AC 5 . 0 Tc= 7 . 4 MIN CN= 87 4 5 SCS TR-20 METHOD 4 .0 TYPE III 24-HOUR RAINFALL= 4 .8 IN Jn 3. 5 C+- PEAK= 5 . 7 CFS U 3. 0 @ 12 .09 HRS `-� VOLUME= . 37 AF 3 2. 5 CD 2. 0 J LL 1 .5 1 .0 . 5 0. 0 m in m �n m in m m in m m m in m in m OD Q1 Q� m m N N - - V - - - - - - TIME ( hours ) Data for Central Metal Finishing - Pre Developed Page 22 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 1 RUNOFF PEAK= 5 . 7 CFS @ 12 . 09 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 . 1 . 1 . l . 1 . 1 . 1 . 1 8 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 8 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .1 8. 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 2 .2 9 . 80 . 2 . 2 . 2 . 2 .2 . 2 . 2 . 2 . 2 . 2 10 . 10 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 10 .40 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 3 . 3 .3 10 . 70 . 3 . 3 .3 . 3 . 3 - . 3 . 3 . 3 -. 3 .3 11 . 00 . 3 . 3 .3 . 3 . 3 . 4 .4 .4 . 4 .4 11 . 30 . 4 . 4 . 5 . 5 . 5 . 5 . 5 . 5 . 6 . 6 11 . 60 . 7 . 8 . 9 1 . 0 1 . 2 1 . 3 1 . 5 1 . 6 1 . 8 2 . 0 11 . 90 2 . 1 2 . 3 2 . 7 3 . 3 4 . 2 5 . 1 5 . 6 5 . 5 4 . 9 4 .2 12 . 20 3 . 6 3 . 2 2 . 9 2 . 6 2 .4 2 . 2 2 . 0 1 . 9 1 . 7 1 . 5 12 . 50 1 .4 1 . 2 1 . 0 . 9 . 8 . 8 . 8 . 7 . 7 . 7 12 . 80 . 7 . 7 . 6 . 6 . 6 . 6 . 6 . 5 . 5 . 5 13 . 10 . 5 . 5 . 5 . 5 . 5 . 5 . 5 . 5 . 5 .4 13 .40 .4 .4 .4 . 4 .4 .4 .4 .4 . 4 .4 13 . 70 .4 . 4 .4 . 4 .4 .4 .4 . 4 . 4 .4 14 . 00 . 3 . 3 . 3 . 3 . 3 . 3 . 3 .3 . 3 .3 14 . 30 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 14 . 60 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 .3 14 . 90 . 3 . 3 .3 . 3 . 3 . 3 .3 . 3 . 3 .3 15 . 20 . 2 . 2 . 2 . 2 .2 . 2 . 2 . 2 . 2 .2 15 . 50 . 2 . 2 .2 . 2 . 2 . 2 .2 . 2 . 2 .2 15 . 80 . 2 .2 .2 . 2 . 2 . 2 . 2 . 2 . 2 .2 16 . 10 . 2 . 2 .2 . 2 . 2 . 2 .2 . 2 . 2 .2 16 .40 . 2 . 2 . 2 . 2 . 2 .2 .2 . 2 . 2 .2 16 . 70 . 2 . 2 .2 . 2 .2 . 2 . 2 . 2 . 1 . l 17 . 00 . l Data for Central Metal Finishing - Pre Developed Page 23 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 2 Area flowing to Design Point #2 PEAK= 1 . 3 CFS @ 12 . 18 HRS, VOLUME= . 10 AF ACRES CN SCS TR-20 METHOD . 03 80 Open Space, Good, Soil D TYPE III 24-HOUR . 48 70 Woods, Good,° Soil C RAINFALL= 4 . 8 IN . 18 77 Woods, Good, Soil D SPAN= 8-17 HRS, dt= . 03 HRS . 69 72 Method Comment Tc (min) TR-55 SHEET FLOW _ A to B 13 . 2 Woods : -Light underbrush n= . 4 L=100 ' P2=3 . 1 in s= . 07 SHALLOW CONCENTRATED/UPLAND FLOW B to C . 7 Unpaved Kv=16 . 1345 L=160 ' s= . 053 ' / ' V=3 . 71 fps Total Length= 260 ft Total Tc= 13 . 9 SUBCATCHMENT 2 RUNOFF Area flowing to Design Point #2 1 . 2 AREA= . 69 AC 1 . 1 Tc= 13 .9 MIN CN= 72 1 . 0 SCS TR-20 METHOD .9 TYPE III 24-HOUR ^ RAINFALL= 4.8 IN . 8 C-- PEAK= 1 . 3 CFS U 7 @ 12 . 18 HRS 6 VOLUME= . 10 OF O 5 lL 4 3 2 . 1 0 . 0 CS) in m Ln m L m m in m �n m in m in m in m m 00 m m m m - N N M M VT V' In to 0 0 r- - - - - - - - - - - - TIME ( hours ) Data for Central Metal Finishing - Pre Developed Page 24 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 2 RUNOFF PEAK= 1 . 3 CFS @ 12 . 18 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0_ 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 ` 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 `0 . 0 0. 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 : 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 -70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0_ 11. 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 11 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 60 . 1 . 1 . 1 . 1 . 2 . 2 . 2 . 2 . 3 .3 11 . 90 .3 . 4 .4 . 5 . 6 . 7 . 9 1 . 1 1 . 2 1 .3 12 . 20 1 .3 1 .-2 1 . 1 1 . 0 1 . 0 . 9 . 8 . 8 . 7 . 7 12 . 50 . 6 . 6 . 5 . 5 .4 . 4 . 3 . 3 . 3 . 3 12 . 80 .3 . 2 .2 . 2 . 2 . 2 . 2 . 2 . 2 .2 13 . 10 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 13 . 40 .2 . 2 . 2 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 20 .1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .l 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .1 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 40 .1 . 1 . 1 . l . 1 . 1 . 1 . 1 . 1 . 1 16 . 70 .1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 17 . 00 .1 Data for Central Metal Finishing - Pre Developed Page 25 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 3 Area Flowing to Design Point #3 PEAK= . 6 CFS @ 12 . 03 HRS, VOLUME= . 03 AF ACRES CN SCS TR-20 METHOD . 15 80 Open Space, Good, Soil D TYPE III 24-HOUR 02 77 Woods, Good, Soil D RAINFALL= 4 . 8 IN . 17 80 SPAN= 8-17 HRS, dt= . 03 HRS Method Comment Tc (min) DIRECT ENTRY Average 2 . 6 SUBCATCHMENT 3 RUNOFF Area Flowing to Design Point #S . 60 AREA= 17 AC . 55 Tc= 2 . 6 MIN 50 CN= 80 45 SCS TR-20 METHOD TYPE III 24-HOUR . 40 RAINFALL= 4. 8 IN . 35 PEAK= . 6 CFS U @ 12 .03 HRS v . 30 UOLUME= . 03 AF �13 . 25 O —1 . 20 lL . 15 . 10 . 05 0 . 00m in m in m in m n n m in m in m in m OD 00 Q� Q) m m TIME ( hours ) Data for Central Metal Finishing - Pre Developed Page 26 TYPE III 24-HOUR RAINFALL= 4 .8 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 3 RUNOFF PEAK= . 6 CFS @ 12 . 03 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 .30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 - 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 .50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 .40 0 . 0 0 . 0 010 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 70 0. 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 .30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 11 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 2 . 2 . 2 . 2 11 . 90 . 2 .3 . 4 . 5 . 6 . 6 . 5 . 4 . 3 .3 12 .20 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 1 . 1 . 1 12 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 12 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 0 . 0 0 . 0 0 . 0 13 .10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 .30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 .20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 .50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 .10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Pre Developed Page 27 TYPE III 24-HOUR RAINFALL= 7 . 0 IN (100 NEAR ST®RM> Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 1 Area Flowing to Design Point #1 PEAK= 9 . 0 CFS @ 12 . 09 HRS, VOLUME= . 60 AF ACRES CN SCS TR-20 METHOD . 73 98 Pavement, Roof & Walkways TYPE III 24-HOUR . 53 74 Open Space, Good, Soil C RAINFALL= 7 . 0 IN . 06 80 Open Space, Good, Soil D SPAN= 8-17 HRS, dt= . 03 HRS . 02 70 Woods, Good, Soil C . 09 72 Woods & Grass, Good, Soil C . 09 89 Gravel Area -. 01 91 Gravel Area 1 . 53 87 Method Comment Tc (min) DIRECT ENTRY Average 7 . 4 SUBCATCHMENT 1 RUNOFF Area Flowing to Design Point # 1 9 0 8 . 5 AREA= 1 . 53 AC 8 0 Tc= 7 . 4 MIN 7 . 5 CN= 87 7 . 0 SCS TR-20 METHOD 6 .5 TYPE III 24-HOUR 6 . 0 RAINFALL= 7.0 IN 4- 5 .5 PEAK= 9 .0 CFS U 5 .0 e 12 -09 HRS 4 .5 VOLUME= .60 AF 3 4 .0 O 3.5 _1 3.0 2 .5 2 .0 1 .5 1 .0 5 00 Li I i. . . . . . . . . . CS) in m in m in m in m in m un m in m in m Ln m N N M M V' I' n In 0 lD I- TIME ( hours ) Data for Central Metal Finishing - Pre Developed Page 28 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 1 RUNOFF PEAK= 9 . 0 CFS @ 12 . 09 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 8 . 30 _ . 1 . 1 . 1 . 1 . 2 . 2 . 2 . 2 . 2 .2 8 . 60 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 8 . 90 .2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 9 . 20 . 2 . 2 . 2 . 2 . 2 . 2 . 3 . 3 . 3 .3 9 . 50 .3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 9 . 80 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 10 . 10 .3 . 4 .4 .4 . 4 . 4 . 4 . 4 . 4 .4 10 .40 .4 . 4 .4 . 4 . 4 . 4 . 5 . 5 . 5 . 5 10 . 70 . 5 . 5 . 5 5 . 5 . 5 . 5 . 5 . 5 _ . 6 11 . 00 . 6 . 6 . 6 . 6 . 6 . 6 . 7 . 7 . 7 . 7 11 . 30 . 8 . 8 . 8 . 8 . 9 . 9 . 9 . 9 1 . 0 1 . 0 11 . 60 1 .2 1 . 3 1 . 5 1 . 8 2 . 0 2 . 2 2 . 5 2 . 7 3 . 0 3 . 2 11 . 90 3 . 5 3 . 8 4 . 3 5 . 3 6 . 7 8 . 2 8 . 9 8 . 7 7 . 7 6 . 6 12 .20 5 . 6 - 4 . 9 4 . 5 4 . 1 3 . 7 3 . 4 3 . 2 2 . 9 2 . 6 2 .4 12 . 50 2 . 1 1 . 8 1 . 6 1 .4 1 . 3 1 . 2 1 . 2 1 . 1 1 . 1 1 . 1 12 . 80 1 . 0 1 . 0 1 . 0 . 9 . 9 . 9 . 9 . 8 . 8 . 8 13 . 10 . 8 . 7 . 7 . 7 . 7 . 7 . 7 . 7 . 7 . 7 13 .40 . 7 . 7 . 7 . 7 . 6 . 6 . 6 . 6 . 6 . 6 13 . 70 . 6 . 6 . 6 . 6 . 6 . 6 . 6 . 6 . 5 . 5 14 . 00 . 5 . 5 . 5 . 5 . 5 . 5 . 5 . 5 . 5 . 5 14 . 30 . 5 . 5 . 5 . 5 . 5 . 5 . 5 . 5 . 5 .4 14 . 60 .4 . 4 .4 .4 .4 .4 .4 .4 .4 .4 14 . 90 .4 . 4 .4 .4 .4 .4 . 4 .4 .4 .4 15 . 20 .4 . 4 .4 .4 .4 .4 .4 . 4 . 3 .3 15 . 50 .3 . 3 . 3 . 3 . 3 . 3 . 3 .3 . 3 .3 15 . 80 .3 . 3 .3 . 3 . 3 . 3 . 3 . 3 . 3 .3 16 . 10 .3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 .3 16 .40 .3 . 3 . 3 . 2 . 2 . 2 . 2 .2 . 2 .2 16 . 70 .2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 17 . 00 .2 Data for Central Metal Finishing - Pre Developed Page 29 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 2 Area flowing to Design Point #2 PEAK= 2 . 4 CFS @ 12 . 18 HRS, VOLUME= . 19 AF ACRES CN - SCS -TR-20 METHOD . 03 80 Open Space, Good, Soil D TYPE . III 24-HOUR . 48 70 Woods, Good, Soil C RAINFALL= 7 . 0 IN 18 77 Woods, Good, Soil D SPAN= 8-17 HRS, dt= . 03 HRS 69 72 Method Comment Tc (min) TR-55 SHEET FLOW A to B 13 . 2 Woods : Light underbrush n= .4 L=100 ' P2=3 . 1 in s= . 07 SHALLOW CONCENTRATED/UPLAND FLOW B to C . 7 Unpaved Kv=16 . 1345 L=160 ' s= . 053 ' / ' V=3 . 71 fps Total Length= 260 ft Total Tc= 13 . 9 SUBCATCHMENT 2 RUNOFF= Area flowing to Design Point #2 2 .4 AREA= . 69 AC 2 .2 Tc= 13 . 9 MIN 2 . 8 CN= 72 1 . 8 SCS TR-20 METHOD TYPE III 24-ROUR ^ 1 .6 RAINFALL= 7 . 0 IN LO 4- 1 . 4 PEAK= 2 . 4 CFS U @ 12 . 18 HRS 1 . 2 UOLUME= . 19 AF 3 1 .0 CD -I .8 l� 6 4 2 e . 0 0 m m Ln CD Ln C9 Ln C9 U) CD Ln CD n m Ln CD n CD 00 M M M 0 0 - N N M M V Q lS) L(7 tD l0 f� TIME ( hours ) Data for Central Metal Finishing - Pre Developed Page 30 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 2 RUNOFF PEAK= 2 . 4 CFS @ 12 . 18 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 - 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 0 0 . 0" 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l . 1 10 . 40 10 . 70 . 1 . 1 l 1 l 1 1 1 l 1 11 . 00 . 1 . 1 . 1 l l l 1 1 l 1 11 . 30 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 11 . 60 .2 . 3 .3 . 3 .4 . 4 . 5 . 5 . 6 . 7 11 . 90 . 7 . 8 . 9 1 . 0 1 . 2 1 . 5 1 . 8 2 . 1 2 . 3 2 . 4 12 . 20 2 .4 2 . 3 2 . 1 1 . 9 1 . 8 1 . 6 1 . 5 1 . 4 1 . 3 1 . 2 12 . 50 1 . 1 1 . 0 . 9 . 8 . 7 . 7 . 6 . 5 . 5 . 5 12 . 80 .4 . 4 .4 .4 .4 . 4 . 4 . 3 . 3 . 3 13 . 10 . 3 . 3 . 3 . 3 .3 . 3 . 3 . 3 . 3 . 3 13 . 40 . 3 . 3 . 3 . 3 . 3 . 2 . 2 . 2 . 2 . 2 13 . 70 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 00 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 30 .2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 60 .2 . 2 . 2 . 2 . 2 . 2 .2 . 2 . 2 . 2 14 . 90 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 15 . 50 . l . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 15 . 80 . l . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 16 .40 . 1 . l . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 17 . 00 . l Data for Central Metal Finishing - Pre Developed Page 31 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 3 Area Flowing to Design Point #3 PEAK= 1 . 0 CFS @ 12 . 03 HRS, VOLUME= . 06 AF ACRES CN SCS TR-20 METHOD . 15 80 Open Space, Good, Soil D TYPE III 24-HOUR . 02 77 *_ Woods, Good, Soil D RAINFALL= 7 . 0 IN . 17 80 SPAN= 8-17 HRS, dt= . 03 HRS Method Comment Tc (min) DIRECT ENTRY Average 2 . 6 SUBCATCHMENT 3 RUNOFF Area Flowing to Design Point #3 1 . 0 AREA= 17 AC Tc= 2 . 6 MIN 9 CN= 80 .8 SCS TR-20 METHOD TYPE III 24-HOUR 7 RAINFALL= 7 . 0 IN 4 6 PEAK= 1 .0 CFS U @ 12 . 03 HRS 5 VOLUME= .06 AF 3 O 4 J LL . 3 . 2 1 0.0m Ln m Ln m Ln m Ln m Ln m in m in m Ln m in m CO CU Q) 01 m m — — N N M M V' V Ln Ln 1,0 iD r- TIME ( hours ) Data for Central Metal Finishing - Pre Developed Page 32 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 3 RUNOFF PEAK= 1 . 0 CFS @ 12 . 03 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 : 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 01. 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 .40 0 . 0 0 . 0 0 . 0 - 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 00 0 . 0 0 . 0 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 60 . 1 . 2 . 2 . 2 . 2 . 3 . 3 . 3 . 3 .4 11 . 90 . 4 . 5 . 7 . 9 1 . 0 1 . 0 . 8 . 6 . 5 .4 12 . 20 .4 .4 .4 . 3 . 3 . 3 . 3 . 2 . 2 . 2 12 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 12 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 .40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 0 . 0 14 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 .20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 .50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 33 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems WATERSHED ROUTING 5 1 2 3 D.P. I OSUBCATCHMENT ❑ REACH POND I I LINK pES►cyN PoiNT Data for Central Metal Finishing - Post Developed Page 34 TYPE III 24-HOUR RAINFALL= 2 . 6 IN ( I YEAR S-ror4M) Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HvdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 1 Area Flowing to C.B. (Reach 1) PEAK= 1 . 1 CFS @ 12 . 03 HRS, VOLUME= . 07 AF ACRES CN SCS TR-20 METHOD . 39 98 Pavement, Roof & Walkways TYPE III 24-HOUR . 06 74 _- Open Space, Good, Soil C RAINFALL= 2 . 6 IN . 45 95 SPAN= 8-17 HRS, dt= . 03 HRS Method Comment Tc (min) DIRECT ENTRY Average 3 . 2 SUBCATCHMENT 1 RUNOFF Area Flowing to C B ( Reach 1 ) 1 . 1 AREA= . 45 AC 1 .0 Tc= 3 . 2 MIN CN= 95 9 SCS TR-20 METHOD .8 TYPE III 24-HOUR RAINFALL= 2 .6 IN LO 7 4- PEAK= 1 . 1 CFS U 6 e 12 . 03 HRS UOLUME= . 07 AF 3 .5 O 4 LL 3 .2 . 1 8.Bm in m Ln m Ln m Ln m Ln m in m Ln m in m in m M OD 0D 0D m m — — N N �'7 1 V '' Ln D l0 l0 r- TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 35 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 1 RUNOFF PEAK= 1 . 1 CFS @ 12 . 03 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 -0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 - 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 .40 0 : 0 0 ..0 0 . 0 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 30 . 1 . 1 . 1 . 1 . l . 1 . 1 . 1 . 1 . 1 11 . 60 . 2 . 2 . 2 . 3 . 3 . 3 . 3 . 4 . 4 .4 11 . 90 . 5 . 5 . 7 . 9 1 . 1 1 . 1 . 9 . 7 . 6 . 5 12 . 20 . 5 . 4 .4 . 4 . 3 . 3 .3 . 3 . 2 . 2 12 . 50 . 2 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 12 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 .40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 30 . 1 . 1 . 1 . 1 . 1 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 36 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 2 Area Flowing to Pond 1 PEAK= 1 . 1 CFS @ 12 . 06 HRS, VOLUME= . 07 AF ACRES CN SCS TR-20 METHOD . 40 98 Pavement & Roof TYPE III 24-HOUR . 05 74 Open Space, Good, Soil C RAINFALL= 2 . 6 IN . 03 80 Open Space, Good, Soil D SPAN= 8-17 HRS, dt= . 03 HRS . 02 70 Woods, Good, Soil C . 04 72 Woods & Grass, Good, Soil C . 54 92 Method Comment Tc (min) DIRECT ENTRY Average 5 .4 SUBCATCHMENT 2 RUNOFF Area Flowing to Pond 1 1 1 AREA= 54 AC 0 Tc= 5 4 MIN CN= 92 9 SCS TR-20 METHOD 8 TYPE III 24-HOUR RAINFALL= 2 6 IN 4- 7 PEAK= 1 . 1 CFS U @ 12 . 06 HRS v . 6 VOLUME= . 07 AF 3 5 O 4 LL 3 . 2 1 m in m in m n m in m Ln m to m Ln m in m co 00 M M m m N N M M V I' In to W 0 1� TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 37 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 2 RUNOFF PEAK= 1 . 1 CFS @ 12 . 06 HOURS HOUR _ 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 , 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 70 0 . 0 0 . 0 . l l 1 l l 1 1 1 11 . 00 . 1 . 1 . 1 l l l l 1 1 l 11 . 30 . 1 . 1 . 1 11 . 60 . 1 . 2 . 2 . 2 . 2 . 3 . 3 . 3 . 4 .4' 11 . 90 .4 . 5 . 6 . 8 1 . 0 1 . 1 1 . 1 1 . 0 . 8 . 7 12 . 20 . 6 . 5 . 5 . 4 .4 . 4 . 4 . 3 . 3 . 3 12 . 50 . 2 . 2 . 2 . 2 . 1 . 1 . 1 . 1 . 1 . 1 12 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l' 14 . 90 1. 1 . 1 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0'' 15 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0' 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 38 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 3 - Area Flowing to Design Point #2 PEAK= . 3 CFS @ 12 . 20 HRS, VOLUME= . 02 AF ACRES CN SCS TR-20 METHOD . 34 70 Wooded, Good, Soil C TYPE. III 24-HOUR . 13 77 Wooded, Good, Soil D RAINFALL= 2 . 6 IN . 06 74 Open Space, Good, Soil C SPAN= 8-17 HRS, dt= . 03 HRS . 03 80 Open Space, Good, Soil D . 56 73 Method Comment Tc (min) TR-55 SHEET FLOW A to B 13 . 2 Woods : Light underbrush n= . 4 L=100 ' P2=3 . 1 in s= . 07 SHALLOW CONCENTRATED/UPLAND FLOW B to C . 7 Unpaved Kv=16 . 1345 L=160 ' s= . 053 ' / ' V=3 . 71 fps Total Length= 260 ft Total Tc= 13 . 9 SUBCATCHMENT 3 RUNOFF Area Flowing to Design Point #2 26 AREA= . 56 AC 24 Tc= 13 9 MIN CN= 73 22 SCS TR-20 METHOD 20 TYPE III 24-HOUR 18 RAINFALL= 2 . 6 IN 4- 16 PEAK= . 3 CFS U @ 12 . 2 HRS . 14 UOLUME= . 02 AF 3 . 12 C 10 V_ .08 .06 04 .02 0.00 m Ln m Ln m Ln m Ln m in m Ln m Ln m Ln m Ln m 00 00 (P M m m -- N N M M d V Ln Ln I'D t0 Il- TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 39 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA, 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 3 RUNOFF PEAK= . 3 CFS @ 12 . 20- HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0' 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 :0 0 . o- 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0'. 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10. 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0. 0 . 0 0 . 0 0 . 0 10 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 ' 0 . 0 0 . 0 0 . 0 0 . 0 11 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 90 0 . 0 0 . 0 . 1 . 1 . 1 . 1 . 2 . 2 . 2 . 3 12 . 20 . 3 . 3 . 3 . 2- . 2 . 2 . 2 . 2 . 2 . 2 12 . 50 . 2 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1' 12 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 10 . 1 . 1 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0' 14 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0, 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 40 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 4 Area Flowing to Design Point #3 PEAK= . 1 CFS @ 12 . 03 HRS, VOLUME= . 01 AF ACRES CN SCS TR-20 METHOD . 09 80 Open Space, Good, Soil D TYPE III 24-HOUR . Ol 77- Woods, Good, Soil D RAINFALL= 2 . 6 IN . 10 80 SPAN= 8-17 HRS, dt= . 03 HRS Method Comment Tc (min) DIRECT ENTRY Average 2 . 3 SUBCATCHMENT 4 RUNOFF Area Flowing to Design Point #3 12 AREA= 1 AC 11 Tc= 2 . 3 MIN CN= 80 10 SCS TR-20 METHOD 09 TYPE III 24-HOUR RAINFALL= 2 . 6 IN 08 C-i- PEAK- 1 CFS U 07 @ 12 .03 HRS v .06 VOLUME= . 01 AF CD .05 —� 04 LL_ 03 .02 . 01 m in m Ln m Ln m Ln m Ln m Ln m Ln m Ln m Ln m 00 00 Q) 01 m m ^ N N r`l M V V Ln In W 0 r� TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 41 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 4 RUNOFF PEAK= -. 1 CFS @ 12 . 03 HOURS HOUR_ 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 _ 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0- 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0- - 0 . 0 0 . 0 10 . 70 0 . 0 0 . 0 0 . 0 - 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 90 0 . 0 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 12 . 20 . 1 . 1 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 12 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 ; 12 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 ' 13 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 ', 13 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 ' 14 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 , 14 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 ' 14 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 ' 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 ' 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 ' 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 42 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 5 Area Flowing to Design Point #1 PEAK= 1 . 0 CFS @ 12 . 10 HRS, VOLUME= . 07 AF ACRES CN - SCS TR-20 METHOD . 34 98 Pavement, Roof & Walkways TYPE III 24-HOUR . 30 74 Open Space, Good, Soil C RAINFALL= 2 . 6 IN . 04 80 Open Space, Good, Soil D SPAN= 8-17 HRS, dt= . 03 HRS . 06 72 Woods & Grass, Good, Soil C . 74 85 Method Comment Tc (min) DIRECT ENTRY Average_ 8 . 1 SUBCATCHMENT 5 RUNOFF Area Flowing to Design Point # 1 1 . 0 AREA= 74 AC 9 Tc= 8 1 MIN CN= 85 8 SCS TR-20 METHOD TYPE III 24-HOUR r, 7 RAINFALL= 2 . 6 IN �- 6 PEAK= 1 . 0 CFS U @ 1 2 . 1 HRS u 5 UOLUME= . 07 AF O 4 _ 1 LL 3 2 1 0 . Om Ln m Ln m Ln m Ln m in m n m Ln m n m Ln m CO OD M 01 m m N N M M "P V Ln Ln 0 W r TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 43 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 5 RUNOFF PEAK= 1 . 0 CFS @ 12 . 10 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 _ 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0% 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 70 0 . 0 0 . 0 0 . 0 _0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 60 . 1 . 1 . 1 . 1 .2 . 2 . 2 . 2 . 3 . 3 11 . 90 . 3 . 4 .4 . 5 . 7 . 8 1 . 0 1 . 0 . 9 . 8 12 . 20 . 7 . 6 . 6 . 5 5 . 5 .4 . 4 . 4 . 3 12 . 50 . 3 . 3 . 2 . 2 . 2 . 2 . 2 . 2 . 1 . l' 12 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1'' 13 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 13 .40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1' 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 60 . 1 . l . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1' 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l' 15 . 20 . 1 . 1 .1 . 1 . 1 . 1 . 1 . 1 . 1 0 . 0 15 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0' 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0' 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0' 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 44 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 1 Emergency Spillway(C.B. ) to C.B. Qin = . 7 CFS @ 12 . 16 HRS, VOLUME= . 07 AF Qout= . 7 CFS @ 12 . 20 HRS, VOLUME= . 07 AF, ATTEN= Oa, LAG= 2 . 4 MIN DEPTH END AREA DISCH (FT) (SO-FT) '(CFS) 12 " PIPE STOR-IND+TRANS METHOD 0 . 0 0 . 0 0 . 0 PEAK DEPTH= . 28 FT . 1 0 . 0 . 1 n= . 015 PEAK VELOCITY= 3 . 9 FPS . 2 . 1 .4 LENGTH= 285 FT TRAVEL TIME = 1 . 2 MIN . 3 . 2 . 8 SLOPE= . 017 FT/FT SPAN= 8-17 HRS, dt= . 03 HRS . 7 . _ . 6 3 . 4 . 8 . 7 3 . 9 . 9 . 7 4 . 3 . 9 . 8 4 . 3 1 . 0 . 8 4 . 3 1 . 0 . 8 4 . 0 REACH 1 INFLOW & OUTFLOW Emergency Spillwoy ( C B ) to C B 70 II 12" PIPE 65 II n= . 015 L=285' S= 017 60 I I STOR-IND+TRANS METHOD . 55 I I VELOCITY= 3 . 9 FPS 50 I I TRAUEL= 1 . 2 MIN . 45 I I Qin= . 7 CFS C+- Qout= . 7 CFS U 40 I LAG= 2 . 4 MIN I . 35 I II 30 O J 25 I 1 LL . 20 . 15 . 10 . 05 0 .00 m Ln m U) m in m in m in m in m Ln m in m Un m 00 CO M Q) m m ^ N N m m Q T Ln In tD TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 45 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 1 INFLOW PEAK= . 7 CFS @ 12 . 16 HOURS HOUR 0 . 00 . 03 . 06 . 09 s . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 Q . 0 ' 10 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 . 1 11 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1, 11 . 60 . 1 . 1 . 1 . 1 . 2 . 2 . 2 . 2 . 3 .3 11 . 90 . 3 . 3 . 4 . 4 . 5 . 6 . 6 . 7 . 7 . 7 12 . 20 . 7 . 7 . 7 . 6 . 6 . 6 . 6 . 5 . 5 . 5 12 . 50 .4 . 4 . 3 . 3 . 3 . 2 . 2 . 2 . 2 . 2 12 . 80 . 2 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l'' 13 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 13 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1' 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1' 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .1 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 0 . 0 0 . 0 15 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0' 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0! 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 46 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 1 OUTFLOW PEAK= . 7 -CFS @ 12 . 20 HOURS. HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 - 0 . 0 0 . 0_ 0 . 0 0 . 0 10 . 70 0 . 0 0 . 0 0-. 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 . 1 11 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 60 . 1 . 1 . 1 . 1 . 1 . 2 . 2 . 2 . 2 . 3 11 . 90 . 3 . 3 . 3 . 4 . 4 . 5 . 6 . 6 . 7 . 7 12 . 20 . 7 . 7 . 7 . 7 . 6 . 6 . 6 . 6 . 5 . 5 12 . 50 . 5 .4 . 4 .4 . 3 . 3 . 3 . 2 . 2 .2 12 . 80 . 2 . 2 . 2 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 .40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 47 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 2 C.B. to D.M.H. Qin = 1 . 6 CFS @ 12 . 04 HRS, VOLUME= . 14 AF Qout= 1 . 6 CFS @ 12 . 05 HRS, VOLUME= . 14 AF, ATTEN= Oo, LAG= . 2 MIN DEPTH END AREA DISCH (FT) (SO-FT) (CFS) 12" PIPE STOR-IND+TRANS METHOD 0 . 0 0 . 0 0 . 0 PEAK DEPTH= . 30 FT . 1 0 . 0 . 2 n= . 015 PEAK VELOCITY= 8 . 1 FPS . 2 . 1 . 7 LENGTH= 33 FT TRAVEL TIME = . 1 MIN . 3 . 2 1 . 6 SLOPE= . 071 FT/FT SPAN= 8-17 HRS, dt= . 03 HRS . 7 . 6 6 . 9 . 8 . 7 8 . 0 . 9 . 7 8 . 8 . 9 . 8 8 . 9 1 . 0 . 8 8 . 8 1 . 0 . 8 8 . 2 REACH 2 INFLOW 8 OUTFLOW C B . to D . M H . 1 .6 1 .5 12'' PIPE 1 .4 n= 015 L=33' S= . 071 1 . 3 STOR-IND+TRANS METHOD 1 2 VELOCITY= 8 . 1 FPS TRAUEL-- 1 MIN 1 .0 Qin= 1 . 6 CFS �+- Qout= 1 . 6 CFS U .9 LAG= . 2 MIN g 3 7 CD . 6 LL . 5 4 3 . 2 0 .0 CD Ln m In m m m m C� In m Ln C� In m m 00 m m m m N N rn m V IT Ln Ln to I� TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 48 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 2 INFLOW PEAK= 1 . 6 CFS @. 12 . 04 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 -0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 2 11 . 30 . 2 . 2 . 2 . 2 .2 . 2 . 2 . 2 . 2 . 2 11 . 60 . 3 . 3 . 3 .4 . 4 . 5 . 5 . 6 . 6 . 7 11 . 90 . 7 . 8 1 . 0 1 . 3 1 . 5 1 . 6 1 . 5 1 . 3 1 . 2 1 . 2 12 . 20 1 . 2 1 . 1 1 . 1 1 . 0 1 . 0 . 9 . 9 . 8 . 8 . 7 12 . 50 . 6 . 6 . 5 . 5 .4 . 4 . 4 . 3 . 3 . 3 12 . 80 . 3 . 3 . 3 . 2 . 2 . 2 . 2 . 2 . 2 .2 13 . 10 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 13 . 40 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 1 . 1 . l 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 60 . 1. . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 17 . 00 . 1 Data for Central Metal Finishing - Post Developed Page 49 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HvdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 2 OUTFLOW PEAK= 1 . 6 CFS @ 12 . 05 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 40 . l 1 1 1 l 1 l 1 l 1 10 . 70 . 1 l l 1 l 1 l l l 1 11 . 00 . l 1 l 1 l 1 1 l l l 11 . 30 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 11 . 60 . 3 . 3 . 3 .4 .4 . 5 . 5 . 6 . 6 . 7 11 . 90 . 7 . 8 1 . 0 1 . 3 1 . 5 1 . 6 1 . 5 1 . 3 1 . 2 1 . 2 12 . 20 1 . 2 1 . 1 1 . 1 1 . 0 1 . 0 . 9 . 9 . 8 . 8 . 7 12 . 50 . 6 . 6 . 5 . 5 .4 . 4 .4 . 3 . 3 . 3 12 . 80 . 3 . 3 . 3 . 2 . 2 . 2 . 2 . 2 . 2 . 2 ' 13 . 10 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 13 . 40 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 1 . 1 . 1 ' 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 ' 14 . 90 . 1 . 1 . 1 ..1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l . l ' 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l ' 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 16 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 ' 16 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .1 17 . 00 . l Data for Central Metal Finishing - Post Developed Page 50 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND '1 Detention Pond Qin = 1 . 1 CFS @ 12 . 06 HRS, VOLUME= . 07 AF Qout . 7 CFS @ 12 . 16 HRS, VOLUME= . 07 AF, ATTEN= 380, LAG= 5 . 9 MIN Qpri= . 7 CFS @ 12 . 16 HRS, VOLUME= . 07 AF Qsec= 0 . 0 CFS @ 0 . 00 HRS, VOLUME= 0 . 00 AF ELEVATION CUM. STOR STOR-IND METHOD (FT) (AF) PEAK STORAGE = . 01 AF 248 . 0 0 . 00 PEAK ELEVATION= 249 . 0 FT 250 . 0 . 02 FLOOD ELEVATION= 252 . 0 FT 252 . 0 . 06 START ELEVATION= 248 . 0_ FT_ SPAN= 8-17 HRS, dt= . 03 HRS # ROUTE INVERT OUTLET DEVICES 1 P 248 . 0 ' 5 .5" ORIFICE/GRATE Q= . 6 PI r^2 SQR(2g) SQR (H-r) 2 S 251 . 8 ' 2 .2 ' x 2 .2 ' HORIZONTAL ORIFICE/GRATE Q= . 6 Area SQR(2gH) Primary Discharge -1=Orif ice/Grate Secondary Discharge �--2=Orifice/Grate POND 1 TOTAL DISCHARGE (CFS) vs ELEVATION FEET 0 . 0 . 1 . 2 . 3 .4 . 5 . 6 . 7 . 8 . 9 248 . 0 0 . 00 . 03 . 11 . 21 . 33 .41 . 48 . 54 . 60 . 65 249 . 0 . 70 . 74 . 78 . 82 . 86 . 90 . 93 . 96 1 . 00 1 . 03 250 . 0 1 . 06 1 . 09 1 . 11 1 . 14 1 . 17 1 .20 1 . 22 1 . 25 1 . 27 1 . 30 251 . 0 1 . 32 1 . 35 1 .37 1 . 39 1 .41 1 .44 1 .46 1 .48 1 . 50 8 . 89 252 . 0 11 . 96 POND 1 PRIMARY DISCHARGE (CFS) vs ELEVATION FEET 0 . 0 . 1 . 2 . 3 .4 . 5 . 6 . 7 . 8 . 9 248 . 0 0 . 00 . 03 . 11 . 21 . 33 .41 .48 . 54 . 60 . 65 249 . 0 . 70 . 74 . 78 . 82 . 86 . 90 . 93 . 96 1 . 00 1 . 03 250 . 0 1 . 06 1 . 09 1 . 11 1 . 14 1 . 17 1 . 20 1 . 22 1 . 25 1 . 27 1 . 30 251 . 0 1 . 32 1 .35 1 . 37 1 . 39 1 . 41 1 . 44 1 .46 1 .48 1 . 50 1 . 52 252 . 0 1 . 54 POND 1 SECONDARY DISCHARGE (CFS) vs ELEVATION FEET 0 . 0 . 1 . 2 . 3 .4 . 5 . 6 . 7 . 8 . 9 248 . 0 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 249 . 0 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 250 . 0 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 251 . 0 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 7 .37 252 . 0 10 .42 Data for Central Metal Finishing - Post Developed Page 51 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND 1 INFLOW & -OUTFLOW Detention Pond 1 I _ STOR-IND METHOD 1 0 PEAK STOR= 01 AF PEAK ELEU= 249 FT 9 Gin= 1 1 CFS 8 Gout= 7 CFS Giori = 7 CFS 7 Gsec= 0 0 CFS - c+-- I 1 LAG= 5 9 MIN U 6 I 1 v I 1 : 5 I 1 CD I 1 _1 4 I 1 lL 3 � 1 1 1 f 1 2 / \ 0 . 00 m m in m l in u) m Lo m in m in m in m CO 40 Q� Q� m m N N M M V V In In 0 0 r'- TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 52 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems - POND 1 INFLOW PEAK= 1 . 1 CFS @ 12 . 06 HOURS ' HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 :0 0 . 9 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10. 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0- 0 . 0 0 . 0 0 . 0 10 . 70 0 . 0 -0 . 0 . 1 . 1 . 1 . 1 . 1 . l . 1 l 11 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 l 11 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 60 . 1 . 2 . 2 . 2 . 2 . 3 . 3 . 3 .4 .4 11 . 90 . 4 . 5 . 6 . 8 1 . 0 1 . 1 1 . 1 1 . 0 . 8 . 7 12 . 20 . 6 . 5 . 5 . 4 .4 . 4 . 4 . 3 . 3 . 3 12 . 50 . 2 . 2 . 2 . 2 . 1 . 1 . 1 . 1 . 1 . 1 12 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 90 . 1 . 1 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 53 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND 1 TOTAL OUTFLOW PEAK= . 7 CFS @ 12 . 16 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 .30 - 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 -0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10..40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0'. 0 0 . 0 10 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 1 . 1 11 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 60 . 1 . 1 . 1 . 1 . 2 . 2 . 2 . 2 . 3 . 3 11 . 90 . 3 . 3 .4 . 4 . 5 . 6 . 6 . 7 . 7 . 7 12 . 20 . 7 . 7 . 7 . 6 . 6 . 6 . 6 . 5 . 5 . 5 12 . 50 . 4 . 4 . 3 . 3 . 3 . 2 . 2 . 2 . 2 . 2, 12 . 80 . 2 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1' 13 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 .30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 0 . 0 0 . 0' 15 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 .50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0A 0 . 0' 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0"! 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0'i 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 54 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND 1 PRIMARY OUTFLOW PEAK= . 7 CFS @ 12 . 16 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 .60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 .90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0-. 0 0 . 0 . 1 -1 l 11 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 60 . 1 . 1 . 1 . 1 . 2 . 2 . 2 . 2 . 3 . 3 11 . 90 . 3 . 3 . 4 .4 . 5 . 6 . 6 . 7 . 7 . 7 12 . 20 . 7 . 7 . 7 . 6 . 6 . 6 . 6 . 5 . 5 . 5 12 . 50 . 4 .4 . 3 . 3 . 3 . 2 . 2 . 2 . 2 . 2 12 . 80 . 2 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 13 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 13 .40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 0 . 0 0 . 0 15 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 55 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND 1 SECONDARY OUTFLOW PEAK= 0 . 0 CFS @ - 0 . 00 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 .21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0° 0 . 0 0 . 0 0 .0 0 . 0 10 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 _ 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 12 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 12 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 12 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 ' 13 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 ' 13 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 ' 15 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 ' 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 55 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND 1 SECONDARY OUTFLOW PEAK= 0 . 0 -CFS @ 0 . 00 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0_ 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 . 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 - 10 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0_ 0 . 0 10 . 70 0 . 0 0 . 0 0 . 0 0 . 0 _ 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 12 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 : 0 12 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 ' 12 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 ' 13 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 , 14 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 ' 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 56 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 , HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems DE51 CsN F'O�NT f Not described Qin = 2 . 5 CFS @ 12 . 07 HRS, VOLUME= . 20 AF Qout= 2 . 5 CFS @ 12 . 07 HRS, VOLUME= . 20 AF, ATTEN= Oo, 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= 8-17 HRS, dt= . 03 HRS # ROUTE INVERT OUTLET DEVICES POND 2 INFLOW & OUTFLOW Not described 2 . 4 - METHOD 2 . 2 PEAK STOR= 0 . 00 OF PEAK ELEU= 0 FT 2 . 0 Gin= 2 . 5 CFS 1 8 Qout= 2 . 5 CFS r, LAG= 0 MIN ,n 1 .6 � 1 . 4 U v 1 . 2 CD 1 .0 -J . 8 LL . 6 4 . 2 0 . 0m m o m m m m Ln m Ln m Ln m Ln m Ln m L m m w m m m m N N r l 1`9 V' V Ln n 110 Il- TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 57 TYPE III 24-HOUR RAINFALL= 2 . 6 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems DCS1 (-7N POI1-4 T' 4# 1 _ INFLOW PEAK= 2 . 5 CFS @ 12 . 07 HOURS - Not described HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 -8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 . 1 . 1 9 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 40 . 1 . 1 . 1 . 1 . 1 . 1 1 l 1 l 10 . 70 . 1 . 1 . 1 . 1 . 1 . l 1 1 1 l 11 . 00 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 11 . 30 . 2 . 2 . 2 . 2 . 2 . 2 . 3 . 3 . 3 . 3 11 . 60 .4 . 4 . 4 . 5 . 6 . 6 . 7 . 8 . 9 1 . 0 11 . 90 1 . 1 1 . 2 1 . 5 1 . 8 2 . 2 2 . 4 2 . 5 2 .4 2 . 2 2 . 0 12 . 20 1 . 9 1 . 8 1 . 7 1 . 6 1 . 5 1 . 4 1 . 3 1 . 2 1 . 1 1 . 0 12 . 50 . 9 . 8 . 8 . 7 . 6 . 6 . 5 . 5 . 5 . 4 12 . 80 .4 . 4 . 4 .4 .4 . 3 . 3 . 3 . 3 . 3 13 . 10 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 13 . 40 . 3 . 3 . 3 .2 . 2 . 2 . 2 . 2 . 2 . 2 13 . 70 .2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 ' 14 . 00 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 . 2 . 2 14 . 30 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 , 14 . 60 . 2 . 2 . 2 .2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 90 .2 . 2 . 2 .2 . 2 . 2 . 1 . 1 . 1 . 1 ' 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 '' 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l' 17 . 00 . 1 Data for Central Metal Finishing - Post Developed Page 58 TYPE III 24-HOUR RAINFALL= 3 . 1 IN ( Z -YE.APL STomr1) Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 1 - Area Flowing to C.B. (Reach 1) PEAK= , 1 . 4 CFS @ 12 . 03 HRS, VOLUME= . 08 AF ACRES CN SCS TR-20 METHOD . 39 98 Pavement , Roof & Walkways TYPE III 24-HOUR . 06 74 Open Space, Good, Soil C RAINFALL= 3 . 1 IN . 4S 95 SPAN= 8-17 HRS, dt= . 03 HRS Method Comment Tc (min) DIRECT ENTRY Average 3 .2 SUBCATCHMENT 1 RUNOFF Area Flowing to C B ( Reach 1 ) 1 4 1 3 AREA= 45 AC Tc- 3 . 2 MIN 1 . 2 CN= 95 1 1 SCS TR-20 METHOD 1 . 0 TYPE III 24-HOUR RAINFALL= 3 1 IN � 9 4 8 PEAK= 1 . 4 CFS U e 12 . 03 HRS . 7 UOLUME= . 08 AF 3 . 6 CD 5 LL . 4 3 . 2 1 0 . 0 m Ln m Ln m Ln m Ln m Ln m Ln m in m in m n m N 00 M M m m — N N M M V '' Ln Ln 110 l0 t� TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 59 TYPE III 24-HOUR RAINFALL= 3 . 1 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 1 RUNOFF PEAK=. 1 .4 CFS @ 12 . 03 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0- 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 10 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 40 . 1 1 1 1 1 1 1 1 . 1 . 1 10 :70 . 1 . 1 . 1 . 1 . 1 1 1 1 . 1 . 1- 11 . 00 . l 1 1 1 l 1 1 1 . 1 . l 11 . 30 . l 1 1 1 l l l l . 2 . 2 11 . 60 . 2 . 2 . 3 . 3 .3 . 4 .4 .4 . 5 . 5' 11 . 90 . 6 . 7 . 9 1 . 1 1 .4 1 . 3 1 . 1 . 9 . 7 . 6 12 . 20 . 6 . 5 . 5 .4 .4 . 4 . 3 . 3 . 3 . 2 12 . 50 . 2 . 2 . 2 . 2 . 2 . 1 . 1 . 1 . 1 . 1' 12 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1' 13 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 13 .40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 0 . 0 0 . 0 15 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0' 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0' 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0' 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 60 TYPE III 24-HOUR RAINFALL= 3 .1 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 2 Area Flowing to Pond 1 - PEAK= 1 . 4 CFS @ 12 . 06 HRS, VOLUME= . 09 AF ACRES CN SCS TR-20 METHOD . 40 98 Pavement & Roof TYPE III 24-HOUR . 05 74 Open Space, Good, Soil C RAINFALL= 3 . 1 IN . 03 80 Open Space, Good, Soil D SPAN= 8-17 HRS, dt= . 03 HRS . 02 70 Woods, Good, Soil C . 04 72 Woods & Grass, Good, Soil C . 54 92 Method Comment Tc (min) DIRECT ENTRY Average 5 .4 SUBCATCHMENT 2 RUNOFF Area Flowing to Pond 1 1 4 1 3 AREA= 54 AC Tc= 5 4 MIN 1 2 CN= 92 11 SCS TR-20 METHOD 1 ' 0 TYPE III 24-HOUR RAINFALL= 3 . 1 IN 9 4- PEAK= 1 .4 CFS U . 8 @ 12 . 06 HRS \-j UOLUME= . 09 OF 3 6 O 5 LL 4 3 2 1 0. 0 0 In m in m In m n m n m in m in m In m In m M M IT V In In l0 l0 I,- TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 62 TYPE III 24-HOUR RAINFALL= 3 .1 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 3 Area Flowing to Design Point #2 PEAK= . 4 CFS @ 12 . 19 HRS, VOLUME= . 03 AF ACRES CN SCS TR-20 METHOD . 34 70 Wooded, Good, Soil C TYPE III 24-HOUR . 13 77 Wooded, Good, Soil D RAINFALL= 3 . 1 IN . 06 74 Open Space, Good, Soil C SPAN= 8-17 HRS, dt= . 03 HRS . 03 80 Open Space, Good, Soil D . 56 73 Method Comment Tc (min TR-55 SHEET FLOW A to B 13 . 2 Woods : Light underbrush n= .4 L=100 ' P2=3 . 1 in s= . 07 SHALLOW CONCENTRATED/UPLAND FLOW B to C . 7 Unpaved Kv=16 . 1345 L=160 ' s= . 053 ' / ' V=3 . 71 fps Total Length= 260 ft Total Tc= 13 . 9 SUBCATCHMENT 3 RUNOFF Area Flowing to Design Point #2 40 AREA= 56 AC Tc= 13 . 9 MIN CN= 73 . 35 SCS TR-20 METHOD TYPE III 24-HOUR , � 30 RAINFALL= 3. 1 IN 4 . 25 PEAK= . 4 CFS U e 12 . 19 HRS UOLUME= .03 AF 20 CD 15 Li. 10 05 0. 00 CD Ln m Ln m Ln m In m Ln m In m in m n m Ln m N 00 0) 0) m m N N M M V V In Ln W l0 r- TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 63 TYPE III 24-HOUR RAINFALL= 3 .1 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 3 RUNOFF PEAK= . 4 CFS @ 12 . 19 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 • 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 ._0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 . l 11 . 90 . 1 . 1 . 1 . 1 . 2 . 2 . 3 . 3 . 4 .4 12 . 20 . 4 . 4 . 4 .4 . 3 . 3 . 3 . 3 . 3 .3 12 . 50 . 2 . 2 . 2 . 2 . 2 . 1 . 1 . 1 . 1 . 1 12 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 13 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 13 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 00 . 1 . 1 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 64 TYPE III 24-HOUR RAINFALL= 3 .1 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 4 Area Flowing to Design Point #3 PEAK= . 2 CFS @ 12 . 03 HRS, VOLUME= . 01 AF ACRES CN SCS TR-20 METHOD . 09 80 Open Space, Good, Soil D . TYPE III 24-HOUR . 01 77 Woods, Good, Soil D RAINFALL= 3 . 1 IN . 10 80 SPAN= 8-17 HRS, dt= . 03 HRS Method Comment Tc (min) DIRECT ENTRY Average 2 .3 SUBCATCHMENT 4 RUNOFF Area Flowing to Design Point #3 17 16 AREA= 1 AC Tc= 2 . 3 MIN 15 CN= 80 14 13 SCS TR-20 METHOD TYPE III 24-HOUR 12 RAINFALL= 3 . 1 IN � 11 4 10 PEAK= . 2 CFS U @ 12 . 03 HRS . 09 UOLUME= . 01 AF 08 3 . 07 O 1 06 L� . 05 04 . 03 02 01 0. 0Om Ln m n m n m Ln m Ln m Ln m U) m Ln m Ln m 00 m m m C9 m N N m m V V Ln Ln 0 0 (l- TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 65 TYPE III 24-HOUR RAINFALL= 3 .1 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 4 RUNOFF PEAK= . 2 CFS @ 12 . 03 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0. 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 40 0. 0 0 . 0 - 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 . 1 11 . 90 . 1 . 1 . 1 . 1 . 2 . 2 . 1 . 1 . 1 . 1 12 . 20 . 1 . 1 . 1 . 1 . 1 . 1 0 . 0 0 . 0 0 . 0 0 . 0 12 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 12 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 66 TYPE III 24-HOUR RAINFALL= 3 .1 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 5 Area Flowing to Design Point #1 PEAK= 1 . 3 CFS @ 12 . 10 HRS, VOLUME= . 09 AF ACRES CN SCS TR-20 METHOD . 34 98 Pavement, Roof & Walkways TYPE III 24-HOUR . 30 74 Open Space, =Good, Soil C RAINFALL= 3 . 1 IN . 04 80 Open Space, Good, Soil D SPAN= 8-17 HRS, dt= . 03 HRS . 06 72 Woods & Grass, Good, Soil C . 74 85 Method Comment Tc (min)' DIRECT-ENTRY Average 8 . 1 SUBCATCHMENT 5 RUNOFF Area Flowing to Design Point # 1 1 3 AREA-- 74 AC 1 . 2 Tc= 8 . 1 MIN CN= 85 1 . 1 1 . 0 SCS TR-20 METHOD TYPE III 24-HOUR 9 RAINFALL= 3 . 1 IN 4- . 8 PEAK= 1 . 3 CFS U C 12 . 1 HRS 7 UOLUME= 09 AF 3 . 6 CD . 5 LL . 4 3 2 . 1 0 . 0 m in m in m in m in m -n m -n m in m in m Ln m m ao rn m m m TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 67 TYPE III 24-HOUR RAINFALL= 3 .1 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 5 RUNOFF PEAK= 1 . 3 CFS @ 12 . 10 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 01. 0 10 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 . 1 11 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 60 . 1 . 2 . 2 . 2 . 2 . 3 . 3 . 3 . 4 .4 11 . 90 . 5 . 5 . 6 . 7 . 9 1 . 1 1 . 3 1 . 3 1 . 2 1 . 1 . 12 . 20 . 9 . 8 . 8 . 7 . 6 . 6 . 6 . 5 . 5 .4 12 . 50 . 4 . 3 . 3 . 3 . 2 . 2 . 2 . 2 . 2 .2 12 . 80 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 1 . 1 . 1 13 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 68 TYPE III 24-HOUR RAINFALL= 3 .1 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 1 Emergency Spillway(C.B. ) to C.B. Qin = . 8 CFS @ 12 . 17 HRS, VOLUME= . 09 AF Qout= . 8 CFS @ 12 . 20 HRS, VOLUME= . 09 AF, ATTEN= Oo, LAG= 2 . 1 MIN DEPTH END AREA DISCH (FT) (SQ-FT) (CFS) 12 " PIPE STOR=IND+TRANS METHOD 0 . 0 0 . 0 0 . 0 PEAK DEPTH= . 31 FT . 1 0 . 0 . 1 n= . 015 PEAK VELOCITY= 4 . 1 FPS . 2 . 1 . 4 LENGTH= 285 FT TRAVEL TIME = 1 . 2 MIN . 3 . 2 . 8 SLOPE= . 017 FT/FT SPAN= 8-17 HRS, dt= . 03 ' HRS . 7 . 6 3 .4 . 8 _. 7 3 . 9 . 9 . 7 4 . 3 . 9 . 8 4 . 3 1 . 0 . 8 4 . 3 1 . 0 . 8 4 . 0 REACH 1 INFLOW & OUTFLOW Emergency Spillway ( C B . ) to C B II 12" PIPE . 75 I I n= .015 L=285' S= . 017 70 I I STOR-IND+TRANS METHOD . 65 I I UELOCITY= 4 . 1 FPS . 60 I I TRAUEL= 1 . 2 MIN 0 55 I I Qin= . 8 CFS 4- . 50 I I Qout= . 8 CFS U . 45 I I LAG= 2 . 1 MIN � 40 I 1 I 3 . 35 01 1 . 30 I 11 . 25 . 20 ` I � . 15 10 . 05 0. 00 m Ln m in m in m Ln m in m m in m in m m 00 00 C7) M m m - N N M M 'T V Ln In lD io r� TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 69 TYPE III 24-HOUR RAINFALL= 3 .1 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 1 INFLOW PEAK= . 8 CFS @ 12 . 17 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0. 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 .40 . 1 . 1 . 1 10 . 70 . l l l 1 l l 1 l l l 11 . 00 . l 1 1 1 l l 1 l 1 l 11 . 30 . 1 l l 1 1 l 1 1 1 l 11 . 60 . 1 . 2 . 2 . 2 . 2 . 2 . 3 . 3 . 3 .4 11 . 90 . 4 . 4 . 5 . 5 . 6 . 7 . 8 . 8 . 8 . 8 12 . 20 . 8 . 8 . 8 . 8 . 8 . 7 . 7 . 7 . 6 . 6 12 . 50 . 6 . 5 . 5 . 4 .4 . 3 . 3 . 3 . 2 . 2 12 . 80 . 2 . 2 . 2 . 2 . 2 . 2 . 1 . 1 . 1 . 1 13 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .1 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 70 TYPE III 24-HOUR RAINFALL= 3 .1 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 1 OUTFLOW PEAK= . 8 CFS @ 12 . 20 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 .30 0 . 0 0 . 0 ' 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 ..0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 .20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 .50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0. 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 .40 0 . 0 0 . 0 - . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 .30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 60 . 1 . 1 . 1 . 2 . 2 . 2 . 2 . 3 . 3 . 3 11 . 90 . 4 . 4 .4 . 5 . 5 . 6 . 7 . 7 . 8 . 8 12 . 20 . 8 . 8 . 8 . 8 . 8 . 8 . 7 . 7 . 7 . 6 12 . 50 . 6 . 6 . 5 . 5 .4 . 4 . 4 . 3 . 3 . 3 12 . 80 . 2 . 2 . 2 . 2 .2 . 2 . 2 . 2 . 1 . l 13 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 13 .40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1! 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 .30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1' 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 15 .20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1, 15 .50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 .70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 71 TYPE III 24-HOUR RAINFALL= 3 . 1 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 2 C.B. to D.M.H. Qin = 1 . 9 CFS @ 12 . 04 HRS, VOLUME= . 17 AF Qout= 1 . 9 CFS @ 12 . 04 HRS, VOLUME= . 17 AF, _ATTEN= Oa, LAG= . 1 MIN DEPTH END AREA DISCH (FT) (SO-FT) (CFS) 12" PIPE STOR-IND+TRANS METHOD 0 . 0 0 . 0 0 . 0 PEAK DEPTH= . 32 FT . 1 0 . 0 . 2 n= . 015 PEAK VELOCITY= 8 . 7 FPS . 2 . 1 . 7 LENGTH= 33 FT TRAVEL TIME _ . 1 MIN . 3 . 2 1 . 6 SLOPE= . 071 FT/FT SPAN= 8-17 HRS, dt= . 03 HRS . 7 6 6 . 9 . 8 . 7 8 . 0 . 9 . 7 8 . 8 . 9 . 8 8 . 9 1 . 0 . 8 8 . 8 1 . 0 . 8 8 . 2 REACH 2 INFLOW 8 OUTFLOW C B . to D M H 1 . 9 1 . 8 12'' PIPE 1 7 n= . 015 L=33' S= 071 1 , 6 - STOR-IND+TRANS METHOD 1 .5 UELOCITY= 8. 7 FPS 1 . 4 TRAUEL= . 1 MIN ^ 1 . 3 0 1 . 2 Qin= 1 .9 CFS 4- Ii 1 . 9 CFS U 1 ' 1 LAG= . 1 MIN 1 . 0 9 3 g O 7 � 6 . 5 4 . 3 . 2 1 0 .0 c!D in m Ln m in m Ln m Ln m Ln m to m U) m in m 00 m Q) m m m N r*] rT! c1 Ln In lD tD (� TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 72 TYPE III 24-HOUR RAINFALL= 3 .1 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 2 INFLOW PEAK= 1 . 9 CFS @ 12 . 04 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0- 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 .-0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 50 . 1 - . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 10 . 1 . 1 . 1 . 1 . 1 1 . 1 . 1 . 1 . 1 10 . 40 . 1 . 1 1 . 1 . 1 1 .-1 - . 1 . 1 . . 1 10 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 00 . 2 . 2 . 2 . 2 .2 . 2 . 2 . 2 . 2 . 2 11 . 30 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 3 . 3 . 3 11 . 60 . 3 . 4 .4 . 5 . 5 . 6 . 7 . 7 . 8 . 9 11 . 90 . 9 1 . 0 1 . 3 1 . 6 1 . 9 1 . 9 1 . 8 1 . 6 1 . 5 1 . 4 12 . 20 1 .4 1 . 3 1 . 3 1 . 2 1 . 2 1 . 1 1 . 1 1 . 0 . 9 . 9', 12 . 50 . 8 . 7 . 7 . 6 . 6 . 5 . 5 . 5 .4 .4'' 12 . 80 . 4 . 3 . 3 . 3 .3 . 3 . 3 .3 . 2 . 2 13 . 10 . 2 . 2 .2 . 2 .2 . 2 . 2 . 2 . 2 . 2 13 . 40 . 2 . 2 . 2 . 2 .2 . 2 . 2 . 2 . 2 . 2' 13 . 70 . 2 . 2 . 2 . 2 .2 . 2 . 2 . 2 . 2 . 2' 14 . 00 . 2 . 2 . 2 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1' 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1' 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .1;, 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1! 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . lj 16 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1! 17 . 00 . l Data for Central Metal Finishing - Post Developed Page 73 TYPE III 24-HOUR RAINFALL= 3 .1 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH '2 OUTFLOW PEAK= 1 . 9 CFS @ 12 . 04 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 .'0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 40 10 . 70 . 1 . 1 . l l 1 l l 1 1 l 11 . 00 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 11 . 30 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 3 . 3 . 3 11 . 60 . 3 . 4 . 4 . 5 . 5 . 6 . 6 . 7 . 8 . 8 11 . 90 . 9 1 . 0 1 . 3 1 . 6 1 . 9 1 . 9 1 . 8 1 . 6 1 . 5 1 .4 12 . 20 1 . 4 1 . 4 1 . 3 1 . 3 1 . 2 1 . 1 1 . 1 1 . 0 1 . 0 . 9 12 . 50 . 8 . 7 . 7 . 6 . 6 . 5 . 5 . 5 . 4 .4 12 . 80 . 4 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 2 . 2 13 . 10 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 13 . 40 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 13 . 70 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 14 . 00 . 2 . 2 . 2 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 90 . 1 . 1 . 1 . l l l 1 1 l 1 15 . 20 . 1 . 1 . 1 . 1 l 1 l l l 1 15 . 50 . 1 . 1 . 1 . l 1 1 l l l 1 15 . 80 . 1 . 1 . 1 . 1 16 . 10 . 1 . 1 . 1 . l l 1 l 1 l 1 16 .40 . 1 . 1 . 1 . 1 l l l l l l 16 . 70 . 1 . 1 . 1 . 1 17 . 00 . 1 Data for Central Metal Finishing - Post Developed Page 74 TYPE III 24-HOUR RAINFALL= 3 .1 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND 1 - Detention Pond Qin = 1 . 4 CFS @ 12 . 06 HRS, VOLUME= . 09 AF Qout= . 8 CFS @ 12 . 17 HRS, VOLUME= . 09 AF, ATTEN= 410, LAG= 6 . 4 MIN Qpri= . 8 CFS @ 12 . 17 HRS, VOLUME= . 09 AF Qsec= 0 . 0 CFS @ 0 . 00 HRS, VOLUME= 0 . 00 AF ELEVATION CUM.STOR STOR-IND METHOD (FT) (AF) PEAK STORAGE = . 01 AF 248 . 0 0 . 00 PEAK ELEVATION= 249 . 3 FT 250 . 0 . 02 FLOOD ELEVATION= 252 . 0 FT 252 . 0 . 06 - STAR'S' ELEVATION= 248 . 0 FT SPAN= 8-17 HRS, dt= . 03 HRS # ROUTE INVERT OUTLET DEVICES 1 P 248 . 0 ' 5 . 5" ORIFICE/GRATE Q= . 6 PI r^2 SQR(2g) SQR(H-r) 2 S 251. 8 ' 2 .2 ' x 2 .2 ' HORIZONTAL ORIFICE/GRATE Q= . 6 Area SQR(2gH) Primary Discharge I-1=Orifice/Grate Secondary Discharge --2=Orifice/Grate POND 1 TOTAL DISCHARGE (CFS) vs ELEVATION FEET 0 . 0 . 1 . 2 . 3 .4 . 5 . 6 . 7 . 8 . 9 248 . 0 0 . 00 . 03 . 11 . 21 . 33 .41 .48 . 54 . 60 . 65 249 . 0 . 70 . 74 . 78 . 82 . 86 . 90 . 93 . 96 1 . 00 1 . 03 250 . 0 1 . 06 1 . 09 1 . 11 1 . 14 1 . 17 1 . 20 1 . 22 1 . 25 1 . 27 1 .30 251 . 0 1 . 32 1 .35 1 . 37 1 . 39 1 .41 1 .44 1 .46 1 .48 1 . 50 8 . 89 252 . 0 11 . 96 POND 1 PRIMARY DISCHARGE (CFS) vs ELEVATION FEET 0 . 0 . 1 . 2 . 3 .4 . 5 . 6 . 7 . 8 248 . 0 0 . 00 . 03 . 11 .21 . 33 .41 .48 . 54 . 60 . 65 249 . 0 . 70 . 74 . 78 . 82 . 86 . 90 . 93 . 96 1 . 00 1 . 03 250 . 0 1 . 06 1 . 09 1 . 11 1 . 14 1 . 17 1 . 20 1 . 22 1 . 25 1 . 27 1 .3C 251 . 0 1 . 32 1 . 35 1 . 37 1 .39 1 .41 1 .44 1 . 46 1 .48 1 . 50 1 . 52 252 . 0 1 . 54 POND 1 SECONDARY DISCHARGE (CFS) vs ELEVATION FEET 0 . 0 .1 . 2 . 3 .4 . 5 . 6 . 7 . 8 248 . 0 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 249 . 0 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 250 . 0 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 0( 251 . 0 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 7 . 37/ 252 . 0 10 .42 Data for Central Metal Finishing - Post Developed Page 75 TYPE III 24-HOUR RAINFALL= 3 . 1 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND 1 INFLOW & OUTFLOW Detention Pond 1 4 1 . 3 STOR-IND METHOD PEAK STOR= 01 AF 1 2 PEAK ELEU-- 249 3 FT 1 . 1 Qin= 1 4 CFS 1 . 0 Gout= 8 CFS n Qpri = 8 CFS 0 9 Qsec-- 0 0 CFS 4- LAG= 6 4 MIN U 8 u 7 3 6 1 O 5 i J i � L 4 3 2 1 � 0 . 0 m �n m n m Ln m in m in m in m Ln m n m in m co m m m m m ^ N N M M V' '' Ln Ln 0 0 i- TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 76 TYPE III 24-HOUR RAINFALL= 3 .1 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND 1 INFLOW PEAK= 1 . 4 CFS @ 12 . 06 HOURS - HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 .50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 . 1 . 1 . 1 10 .40 . 1 . 1 . 1 . 1 . l l 1 l 1 1 10 . 70 . 1 . 1 . 1 . 1 . l _ l l 1 1 l 11 . 00 . 1 . 1 . 1 . 1 . l l l 1 l 1 11 . 30 . 1 . 1 . 1 . 1 . 1 l l 1 l . 2 11 . 60 . 2 . 2 . 2 . 3 . 3 . 4 .4 . 4 . 5 . 5 11 . 90 . 5 . 6 . 7 . 9 1 . 2 1 . 4 1 . 4 1 . 2 1 . 0 . 8 12 . 20 . 7 . 6 . 6 . 6 . 5 . 5 .4 . 4 . 4 . 3 12 . 50 . 3 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . c 12 . 80 . 2 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 .40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 14 .30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 15 .20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 50 . 1 . 1 . 1 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 lY ;ral Metal Finishing - Post Developed Page 75 Page 77 ' III 24-HOUR RAINFALL= 3 .1 IN THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 1 Aug 95 000401 (c) 1986-1995 Applied Microcomputer Systems _ POND 1 - INFLOW & OUTFLOW Detention Pond 4 . 27 0 0 . 0 1 . 4 0 0 . 0 1 3 STOR-IND METHOD 0 0 . 0 PEAK STOR= 01 AF 0 0 . 0 1 2 PEAK ELEU= 249 . 3 FT 0 0 . 0 1 1 Qin= 1 . 4 CFS 0 0 . 0 1 . 0 Qout= 8 CFS 0 0 . 0 Qpri = 8 CFS 9 _Qsec= 0 . 0 CFS 1 l LAG= 6 . 4 MIN 1 . 1 8 I 3 . 4 6 I 8 . 8 5 I 6 . 6 2 . 2 4 � � 1 . 1 3 1 . 1 2 1 . 1 0, 0 m in m n Ln m in m Ln m in m in m ao ao rn rn m m -- N m m v IT in in w � r 1 . 1 1 1 1 .1 TIME ( hours ) 0 0 . 0 0 0 . 0 0 0 . 0 0 0 . 0 0 0 . 0 Data for Central Metal Finishing - Post Developed Page 78 TYPE III 24-HOUR RAINFALL= 3 . 1 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND 1 PRIMARY OUTFLOW PEAK= . 8 CFS @ 12 . 17 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 .10 0 . 0- 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 ' 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 ' 10 . 70 l 1 1 1 l l l 1 l l 11 . 00 11 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 60 . 1 . 2 .2 . 2 . 2 . 2 . 3 . 3 . 3 . 4' 11 . 90 .4 . 4 . 5 . 5 . 6 . 7 . 8 . 8 . 8 . 8' 12 . 20 . 8 . 8 . 8 . 8 . 8 . 7 . 7 . 7 . 6 . 6 12 . 50 . 6 . 5 . 5 . 4 .4 . 3 . 3 . 3 . 2 . 2 12 . 80 .2 . 2 . 2 . 2 . 2 . 2 . 1 . 1 . 1 . 1'' 13 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 13 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . li 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l' 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1' 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l' 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 0 . 0 0 . 0' 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0'' 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 79 TYPE III 24-HOUR RAINFALL= 3 . 1 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND 1 SECONDARY OUTFLOW PEAK= 0 . 0 CFS @ 0 . 00 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 - 10. 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 .0 0 . 0 0 . 0 11 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 12 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 12 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 12 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 80 TYPE III 24-HOUR RAINFALL= 3 . 1 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems I�ESI � N P4IN`T' � _ Not described Qin = 3 . 1 CFS @ 12 . 07 HRS, VOLUME= . 26 AF Qout= 3 . 1 CFS @ 12 . 07 HRS, VOLUME= . 26 AF, ATTEN= 00, 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= 8-17 HRS, dt= . 03 HRS # ROUTE INVERT OUTLET DEVICES POND 2 INFLOW & OUTFLOW Not described 3 .0 - METHOD 2 8 PEAK STOR= 0 . 00 AF 2 6 PEAK ELEU= 0 FT 2 . 4 Qin= 3 1 CFS Qout= 3 . 1 CFS 2 . 2 LAG= 0 MIN �0 2 .0 U 1 .8 \-/ 1 6 3 1 .4 CD 1 . 2 _1 I .0 V_ .8 6 .4 . 2 0 .0 m Ln m Ln m In m In m In m Ln m Ln m In m In m 0o OJ Q) m m m N N M M V' V In M 0 1.0 I, TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 81 TYPE III 24-HOUR RAINFALL= 3 .1 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems ® E51 (VN Po11-4-r -TP I INFLOW PEAK= 3 . 1 CFS @ 12 . 07 HOURS Not described HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 . 1 . 1 8 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 " . 1 9 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 40 . 1 . 1 . 1 . 2 . 2 .-2 . 2 _ . 2 . 2 . 2 10 . 70 . 2 . 2 - . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 11 . 00 . 2 .2 . 2 . 2 . 2 . 2 . 2 . 3 . 3 . 3 11 . 30 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 4 .4 .4 11 . 60 . 5 . 5 . 6 . 7 . 8 . 9 . 9 1 . 0 1 . 2 1 . 3 11 . 90 1 . 4 1 . 5 1 . 9 2 . 3 2 . 8 3 . 1 3 . 1 3 . 0 2 . 7 2 . 5 12 . 20 2 . 3 2 . 2 2 . 1 1 . 9 1 . 8 1 . 7 1 . 6 1 . 5 1 . 4 1 . 3 12 . 50 1 . 2 1 . 1 1 . 0 . 9 . 8 . 8 . 7 . 7 . 6 . 6 12 . 80 . 5 . 5 . 5 . 5 . 5 . 4 . 4 . 4 .4 .4 13 . 10 .4 .4 .4 . 3 . 3 . 3 . 3 . 3 . 3 . 3 13 . 40 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 13 . 70 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 14 . 00 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 14 . 30 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 60 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 90 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 15 . 20 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 15 . 50 . 2 . 2 .2 . 2 . 2 . 2 . 2 . 1 . 1 . 1 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 1 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 l 16 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 17 . 00 . 1 i Data for Central Metal Finishing - Post Developed Page 82 TYPE III 24-HOUR RAINFALL= 4 . 8 IN (t o V EAR S TOZM) Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 1 Area Flowing to C.B. (Reach 1) PEAK= 2 . 2 CFS @ 12 . 03 HRS, VOLUME= . 13 AF ACRES CN SCS TR-20 METHOD . 39 98 Pavement, Roof & Walkways TYPE III 24-HOUR . 06 74 Open Space, Good, Soil _C RAINFALL= 4 . 8 IN . 45 95 SPAN= 8-17 HRS, dt= . 03 HRS Method Comment Tc (min;, DIRECT ENTRY Average 3 . 2 SUBCATCHMENT 1 RUNOFF Area Flowing to C B ( Reach 1 ) 2 , 2 AREA= 45 AC 2 .0 Tc= 3 2 MIN CN= 95 1 .8 SCS TR-20 METHOD 1 6 TYPE III 24-HOUR RAINFALL= 4 . 8 IN 4- 1 4 PEAK= 2 2 CFS U 1 2 e 12. 03 HRS VOLUME= . 13 AF 3 1 .0 O 8 LL 6 .4 2 0 .0 m in m in m in m in m n m n m 07 W M M m m ^ N N l �Tl Q V to Ln �O �D I� TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 83 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 1 RUNOFF PEAK= 2 . 2 CFS @ 12 . 03 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 . 1 . 1 8 . 60 l 1 1 1 1 1 1 1 l l 8 . 90 9 . 20 9 . 50 l l 1 l l 1 l 1 l 1 9 . 80 l l l 1 l 1 l l 1 l 10 . 10 10 . 40 10 . 70 11 . 00 . 1 . 1 . 1 . 2 . 2 . 2 . 2 . 2 . 2 . 2 11 . 30 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 3 . 3 11 . 60 . 4 . 4 . 5 . 5 . 6 . 6 . 7 . 7 . 8 . 9 11 . 90 . 9 1 . 1 1 . 4 1 . 8 2 . 2 2 . 2 1 . 8 1 .4 1 . 1 1 . 0 12 . 20 . 9 . 8 . 8 . 7 . 7 . 6 . 5 . 5 . 4 .4 12 . 50 . 3 . 3 . 3 . 2 . 2 . 2 . 2 . 2 . 2 .2 12 . 80 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 13 . 10 . 2 . 2 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 84 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 2 Area Flowing to Pond 1 PEAK= 2 . 4 CFS @ 12 . 06 HRS, VOLUME= . 15 AF ACRES CN SCS TR-20 METHOD . 40 98 Pavement & Roof TYPE III 24-HOUR . 05 74 Open= Space, Good, Soil C RAINFALL= 4 . 8 IN . 03 80 Open Space, Good, Soil D SPAN= 8-17 HRS, dt= . 03 HRS . 02 70 Woods, Good, Soil C . 04 72 Woods & Grass, Good, Soil C . 54 92 Method Comment Tc (min)' DIRECT ENTRY Average 5 .4 SUBCATCHMENT 2 RUNOFF Area Flowing to Pond 1 2 4 2 . 2 AREA= 54 AC Tc= 5 4 MIN 2 0 CN= 92 1 8 SCS TR-20 METHOD TYPE III 24-HOUR 1 . 6 RAINFALL= 4 .8 IN C+_ 1 . 4 PEAK= 2 . 4 CFS U @ 12 .06 HRS \_j 1 2 VOLUME= 15 AF 3 1 . 0 0 J . 8 lL . 6 . 4 2 0 0 m in m in m in m m U) m in m in m in m n m TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 85 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 2 RUNOFF PEAK= 2 .4 CFS @ 12 . 06 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 :0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 . 1 . 1 . 1 . 1 8 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 l 9 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 l 9 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 l 9 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 40 . 1 . 1 . 1 . l l 1 1 1 l l 10 . 70 . 1 . 1 . 1 l l l 1 1 1 l 11 . 00 . 1 . 1 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 11 . 30 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 3 . 3 11 . 60 . 3 . 4 . 4 . 5 . 6 . 6 . 7 . 8 . 8 . 9 11 . 90 . 9 1 . 0 1 . 3 1 . 6 2 . 1 2 . 4 2 . 3 2 . 0 1 . 6 1 .4 12 . 20 1 . 2 1 . 1 1 . 0 . 9 . 8 . 8 . 7 . 6 . 6 . 5 12 . 50 . 4 .4 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 12 . 80 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 13 . 10 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 13 . 40 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 1 . 1 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 l 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 1 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 1 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 1 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 1 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 l 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l l 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 l 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .1 16 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 1 16 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 l 17 . 00 . 1 Data for Central Metal Finishing - Post Developed Page 86 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 3 - Area Flowing to Design Point #2 PEAK= 1 . 1 CFS @ 12 . 18 HRS, VOLUME= . 08 AF ACRES CN SCS TR-20 METHOD . 34 70 Wooded, Good, Soil C TYPE III 24-HOUR . 13 77 Wooded, Good, Soil D RAINFALL= 4 . 8 IN . 06 74 Open Space, Good, Soil C SPAN= 8-17 HRS, dt= . 03 HRS . 03 80 Open Space, Good, Soil D . 56 73 Method Comment Tc (min TR-55 SHEET FLOW A to B 13 . 2 Woods : Light underbrush n= . 4 L=100 ' P2=3 . 1 in s= . 07 SHALLOW CONCENTRATED/UPLAND FLOW B to C . 7 Unpaved Kv=16 . 1345 L=160 ' s= . 053 ' / ' V=3 . 71 fps Total Length= 260 ft Total Tc= 13 . 9 SUBCATCHMENT 3 RUNOFF Area Flowing to Design Point #2 1 .0 AREA= . 56 AC Tc= 13 . 9 MIN 9 CN= 73 8 SCS TR-20 METHOD TYPE III 24-HOUR 7 RAINFALL= 4 .8 IN 4 PEAK= 1 . 1 CFS U .6 @ 12 . 18 HRS UOLUME= 08 AF 5 3 O 4 I LL 3 2 1 0 0 m in m m in m in m in m in m Ln m in m in m nD N Q) O) m m TIME ( hours ) i Data for Central Metal Finishing - Post Developed Page 87 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 3 RUNOFF PEAK= 1 . 1 CFS @ '12 . 18 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0- 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 - 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 40 0 . 0 -0 . 0 0 . 0_ 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 60 . 1 . 1 . 1 . 1 . 1 . 2 . 2 . 2 . 2 . 3 11 . 90 . 3 . 3 .4 .4 . 5 . 6 . 8 . 9 1 . 0 1 . 1 12 . 20 1 . 1 1 . 0 . 9 . 9 . 8 . 8 . 7 . 7 . 6 . 6 12 . 50 . 5 . 5 . 4 . 4 . 3 . 3 . 3 . 3 . 2 . 2 12 . 80 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 13 . 10 . 2 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 13 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 .40 . 1 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 88 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 4 Area Flowing to Design Point #3 PEAK= . 4 CFS @ 12 . 02 HRS, VOLUME= . 02 AF ACRES CN _ SCS TR-20 METHOD . 09 80 Open Space, Good, Soil D TYPE III 24-HOUR . 01 77 Woods, Good, Soil` D RAINFALL= 4 . 8 IN . 10 80 SPAN= 8-17 HRS, dt= . 03 HRS Method Comment Tc (min, DIRECT ENTRY Average 2 . 3 SUBCATCHMENT 4 RUNOFF Area Flowing to Design Point #0 36 34 AREA= I AC 32 Tc= 2 . 3 MIN 30 CN= 80 28 SCS TR-20 METHOD 26 TYPE III 24-HOUR 24 RAINFALL= 4 8 IN LO '-+- 22 PEAK= . 4 CFS U 20 @ 12 . 02 HRS . 18 UOLUME= . 02 AF 3 . 16 CD 14 1 . 12 08 06 . 04 02 0. 00 m in m in m in m n (D Ln m in m in m U) m Ln m 00 00 01 m C9 0 — — N N m m Q" V Ln Ln l0 110 TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 89 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HvdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 4 RUNOFF PEAK= . 4 CFS @ 12 . 02 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0-. 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 60 0 . 0 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 90 . 1 . 2 . 2 . 3 .4 . 3 . 3 . 2 . 2 . 2 12 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 12 . 50 . 1 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 12 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 90 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 5 Area- Flowing to Design Point #1 PEAK= 2 . 5 CFS @ 12 . 10 HRS, VOLUME= . 17 AF ACRES CN _SCS TR-20 METHOD . 34 98 Pavement , Roof & Walkways TYPE III 24-HOUR . 30 74 Open Space, Good, Soil C RAINFALL= 4 . 8 IN . 04 80 Open Space, Good, Soil D SPAN= 8-17 HRS, dt= . 03 HRS . 06 72 Woods & Grass, Good, Soil C . 74 85 Method Comment Tc (min; DIRECT ENTRY Average 8 . 1 SUBCATCHMENT 5 RUNOFF Area Flowing to Design Point- # 1 2 4 AREA= . 74 AC Tc= 8 . 1 MIN 2 . 2 CN= 85 2 . 0 SCS TR-20 METHOD 1 8 TYPE III 24-HOUR RAINFALL= 4 .8 IN 1 . 6 4- PEAK= 2 . 5 CFS U 1 4 e 12 1 HRS UOLUME= 17 AF 1 2 CD 1 . 0 LL 8 .6 4 . 2 0 0 m in m in m n co W M M m m cv N M M IT IT Ln in Ln �n r TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 91 TYPE III 24-HOUR RAINFALL= 4. 8 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 5 RUNOFF PEAK= 2 . 5. CFS @ 12 . 10 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 .0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 9 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .1 9 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 40 . 1 . 1 . 1 : l l 1 l 1 1 1 10 . 70 . 1 . 1 . 1 l l l l l 1 1 11 . 00 . 1 . 1 . 1 . 1 . 1 . 2 . 2 . 2 . 2 .2 11 . 30 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .3 11 . 60 . 3 . 3 .4 .4 . 5 . 6 . 6 . 7 . 8 . 9 11 . 90 . 9 1 . 0 1 . 2 1 .4 1 . 8 2 . 2 2 . 5 2 . 5 2 . 3 2 . 0 12 . 20 1 . 7 1 . 5 1 .4 1 . 3 1 . 2 1 . 1 1 . 0 . 9 . 8 . 7 12 . 50 . 7 . 6 . 5 . 5 . 4 . 4 . 4 . 3 . 3 . 3 12 . 80 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 2 .2 13 . 10 . 2 . 2 .2 . 2 . 2 . 2 . 2 . 2 . 2 .2 13 . 40 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 13 . 70 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 14 . 00 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .l 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .1 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .1 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .l 16 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .l 17 . 00 . l i Data for Central Metal Finishing - Post Developed Page 92 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 1 - Emergency Spillway(C.B. ) to C.B. Qin = 1 . 2 CFS @ 12 . 21 HRS, VOLUME= .15 AF Qout= 1 . 2 CFS @ 12 . 24 HRS, VOLUME= . 15 AF, ATTEN= 0%, LAG= 1 . 9 MIN DEPTH END AREA DISCH (FT) (SO-FT) (CFS) 12 " PIPE STOR-IND+TRANS METHOD 0 . 0 0 . 0 0 . 0 PEAK DEPTH= . 36 FT . 1 0 . 0 . 1 n= . 015 PEAK VELOCITY= 4 . 6 FPS . 2 . 1 . 4 LENGTH= 285 FT TRAVEL TIME = 1 . 0 MIN . 3 . 2 . 8 SLOPE= . 017 FT/FT SPAN= 8-17 HRS, dt= . 03 HRS . 7 . 6 3 . 4 - . 8 . 7 3 . 9 . 9 . 7 4 . 3 . 9 . 8 4 . 3 1 . 0 . 8 4 . 3 1 . 0 . 8 4 . 0 REACH 1 INFLOW OUTFLOW Emergency Spillwoy ( C B . ) to C B 12" PIPE 1 n= 015 L=285' S= . 017 1 .0 I STOR-IND+TRANS METHOD 9 I I UELOCITY= 4 6 FPS I I TRAUEL= 1 MIN Qin= 1 . 2 CFS 4 7 - I Qout= 1 .2 CFS U 6 I I LAG= 1 .9 MIN 1 3 . 5 O 1 .4 LL 3 I \ 2 r 1 0 . 0 m in m Ln m in m in m in m �n m in m �n m �n m TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 93 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 1 INFLOW PEAK= 1 . 2 CFS @ 12 . 21 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 1.0 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 - . 1 . 1 . 1 11 . 00 . 1 . 1 . 1 . 1 . 1 . 2 . 2 . 2 . 2 . 2 11 . 30 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 11 . 60 . 3 . 3 . 3 . 3 . 4 . 4 . 5 . 5 . 5 . 6 11 . 90 . 6 . 7 . 7 . 8 . 9 1 . 0 1 . 1 1 . 1 1 . 1 1 . 1 12 . 20 1 . 2 1 . 2 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 12 . 50 1 . 0 1 . 0 . 9 . 9 . 8 . 8 . 7 . 7 . 6 . 6 12 . 80 . 5 . 5 . 5 . 4 .4 . 3 .3 . 3 . 3 . 2 13 . 10 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 13 . 40 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 13 . 70 . 2 . 2 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 .40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 16 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 17 . 00 . l Data for Central Metal Finishing - Post Developed Page 94 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 1 OUTFLOW PEAK= 1 . 2 CFS- @ 12 . 24 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 . 1 . 1 . 1 . 1 . 1 . 1 . 1 % 1 9 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 , 9 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l ' 9 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 ' 10 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 40 . 1 . 1 . 1 . 1 10 . 70 . 1 . 1 . 1 . l 11 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 2 . 2 . 2 . 2 11 . 30 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 11 . 60 . 2 . 3 . 3 . 3 . 3 . 4 .4 . 5 . 5 . 5 11 . 90 . 6 . 6 . 7 . 7 . 8 . 9 1 . 0 1 . 1 1 . 1 1 . 1 12 . 20 1 . 1 1 . 2 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 12 . 50 1 . 0 1 . 0 1 . 0 . 9 . 9 . 8 . 8 . 7 . 7 . 6' 12 . 80 . 6 . 5 . 5 . 5 .4 .4 .4 . 3 . 3 . 3 13 . 10 . 3 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 13 . 40 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 13 . 70 . 2 . 2 . 2 . 1 . 1 . 1 . 1 . 1 . 1 . l 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l' 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1'' 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 17 . 00 . l Data for Central Metal Finishing - Post Developed Page 95 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 2 C.B. to D.M.H. Qin = 3 . 1 CFS @ 12 . 04 HRS, VOLUME= . 28 AF Qout= 3 . 1 CFS @ 12 . 04 HRS, VOLUME= . 28 AF, ATTEN 0%, LAG= . 1 MIN DEPTH END AREA DISCH (FT) (SO-FT) (CFS) 12 " PIPE STOR-IND+TRANS METHOD 0 . 0 0 . 0 0 . 0 PEAK DEPTH= .41 FT . 1 0 . 0 . 2 n= . 015 PEAK VELOCITY= 10 . 0 FPS . 2 . 1 . 7 LENGTH= 33 FT TRAVEL TIME = . 1 MIN . 3 . 2 1 . 6 SLOPE= . 071 FT/FT SPAN= 8-17 HRS, dt= . 03 HRS . 7 . 6 6 . 9 _ . 8 . 7 8 . 0 . 9 . 7 8 . 8 . 9 . 8 8 . 9 1 . 0 . 8 8 . 8 1 . 0 . 8 8 . 2 REACH 2 INFLOW & OUTFLOW C . B . to D M H 3 0 12" PIPE 2 . 8 n= . 015 L=33' S= 071 2 . 6 4 STOR-IND+TRANS METHOD 2 VELOCITY= 10 FPS 2 2 TRAUEL= . 1 MIN o 2 . 0 Qin= 3 . 1 CFS 1-4- 1 .8 Qout= 3 . 1 CFS U 1 . 6 LAG= . 1 MIN 1 . 4 3 cD 1 . 2 1 .0 LL 8 6 .4 2 0 I 0m in m in m in m in m -n m in m in m �n m in m CO OD CD 0) m m - N N �T1 f*1 V V Ln Ln lD lD f� TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 96 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 2 INFLOW PEAK= 3 . 1 CFS @ 12 . 04 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 . 1 . 1 . 1 8 . 30 . 1 . 1 . 1 . l l l l l l 1 8 . 60 . 1 . 1 . 1 . l 8 . 90 . 1 . 1 . 1 . l l 1 l l l 1 9 . 20 . 1 . 1 . 1 . 1 l l l 1 1 1 9 . 50 . 1 . 1 . 1 . 1 . 1 . 2 . 2 . 2 . 2 . 2, 9 . 80 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 10 . 10 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 10 .40 . 2 . 2 . 2 . 2 .2 . 2 . 2 . 2 . 2 . 2 10 . 70 . 2 _ . 2 . 2 . 3 . 3 . 3 . 3 . 3 . 3 . 3 11 . 00 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 4 11 .30 . 4 .4 . 4 . 4 .4 .4 .4 . 4 . 5 • 5 11 . 60 . 6 . 7 . 7 . 8 . 9 1 . 0 1 . 1 1 . 2 1 . 3 1 .4 11 . 90 1 . 5 1 . 7 2 . 1 2 . 6 3 . 0 3 . 0 2 . 8 2 . 5 2 . 2 2 . 1 12 . 20 2 . 0 2 . 0 1 . 9 1 . 9 1 . 8 1 . 7 1 . 7 1 . 6 1 . 5 1 .4 12 . 50 1 . 4 1 .3 1 . 2 1 . 2 1 . 1 1 . 0 1 . 0 . 9 . 9 . 8 12 . 80 . 8 . 7 . 7 . 6 . 6 . 6 . 5 . 5 . 5 . 4 13 . 10 . 4 .4 .4 .4 .4 . 3 . 3 . 3 . 3 . 3 13 .40 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 13 . 70 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 2 14 . 00 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 30 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 60 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 90 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 15 .20 . 2 . 2 . 2 .2 . 2 . 2 . 2 . 2 . 2 . 2 15 . 50 . 2 . 2 . 2 . 2 . 2 . 1 . 1 . 1 . 1 . 1 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1! 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 .40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 17 . 00 . 1 Data for Central Metal Finishing - Post Developed Page 97 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 2 OUTFLOW PEAK= 3 . 1 CFS @ 12 . 04 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 . 1 . 1 . 1 8 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l l 8 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l l 8 . 90 . 1 . l 1 l 1 l l l 1 1 9 . 20 . 1 . l 1 l l 1 l 1 l l 9 . 50 . 1 . 1 . 1 . 1 . 1 . 2 . 2 . 2 . 2 . 2 9 . 80 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 10 . 10 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 10 . 40 . 2 _ . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 10.. 70 . 2 . 2 . 2 . 3 . 3 . 3 .3 . 3 . 3 .3 11 . 00 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 .4 11 . 30 . 4 . 4 . 4 .4 .4 . 4 .4 . 4 . 5 . 5 11 . 60 . 6 . 7 . 7 . 8 . 9 1 . 0 1 . 1 1 . 2 1 . 3 1 .4 11 . 90 1 . 5 1 . 7 2 . 1 2 . 5 3 . 0 3 . 0 2 . 8 2 . 5 2 . 2 2 .1 12 . 20 2 . 0 2 . 0 1 . 9 1 . 9 1 . 8 1 . 7 1 . 7 1 . 6 1 . 5 1 . 5 12 . 50 1 . 4 1 . 3 1 . 2 1 . 2 1 . 1 1 . 1 1 . 0 . 9 . 9 . 8 12 . 80 . 8 . 7 . 7 . 6 . 6 . 6 . 5 . 5 . 5 .4 13 . 10 . 4 . 4 .4 . 4 . 4 . 3 . 3 . 3 . 3 . 3 13 . 40 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 .3 13 . 70 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 .2 14 . 00 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 30 . 2 . 2 .2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 60 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 14 . 90 . 2 . 2 . 2 . 2 .2 . 2 .2 . 2 . 2 . 2 15 . 20 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 15 . 50 . 2 . 2 . 2 . 2 . 2 . 1 . 1 . 1 . 1 . 1 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .1 16 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 17 . 00 . 1 Data for Central Metal Finishing - Post Developed Page 98 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND 1 Detention Pond Qin = 2 . 4 CFS @ 12 . 06 HRS, VOLUME= . 15 AF Qout= 1 . 2 CFS @ 12 . 21 HRS, VOLUME= . 15 AF, ATTEN= 52a, LAG= 8 . 8 MIN Qpri= 1 . 2 CFS @ 12 . 21 HRS, VOLUME= . 15 AF - Qsec=. 0 . 0 CFS @ 0 . 00 HRS, VOLUME= 0 . 00 AF ELEVATION CUM. STOR STOR-IND METHOD (FT) (AF) PEAK STORAGE = . 03 AF' 248 . 0 0 . 00 PEAK ELEVATION= 250 .3 FT 250 . 0 . 02 FLOOD ELEVATION= 252 . 0 FT 252 . 0 . 06 START ELEVATION= 248 . 0. FT SPAN= 8-17 HRS, dt= . 03 HRS' # ROUTE INVERT OUTLET DEVICES 1 P 248 . 0 ' 5 . 5" ORIFICE/GRATE Q= . 6 PI r"2 SQR(2g) SQR(H-r) 2 S 251 . 8 ' 2 .2 ' x 2 .2 ' HORIZONTAL ORIFICE/GRATE Q= . 6 Area SQR (2gH) Primary Discharge I-1=Orif ice/Grate Secondary Discharge L-2=Orifice/Grate POND 1 TOTAL DISCHARGE (CFS) vs ELEVATION FEET 0 . 0 . 1 . 2 . 3 .4 . 5 . 6 . 7 . 8 . 9' 248 . 0 0 . 00 . 03 . 11 . 21 . 33 .41 .48 . 54 . 60 . 65' 249 . 0 . 70 . 74 . 78 . 82 . 86 . 90 . 93 . 96 1 . 00 1 . 03 250 . 0 1 . 06 1 . 09 1 . 11 1 . 14 1 . 17 1 . 20 1 . 22 1 . 25 1 . 27 1 . 30', 251 . 0 1. 32 1 . 35 1 . 37 1 . 39 1 .41 1 .44 1 . 46 1 .48 1 . 50 8 . 89' 252 . 0 11. 96 POND 1 PRIMARY DISCHARGE (CFS) vs ELEVATION FEET 0 . 0 . 1 . 2 . 3 . 4 . 5 . 6 . 7 . 8 . 9 248 . 0 0 . 00 . 03 . 11 . 21 . 33 .41 .48 . 54 . 60 . 65' 249 . 0 . 70 . 74 . 78 . 82 . 86 . 90 . 93 . 96 1 . 00 1 . 03 250 . 0 1 . 06 1 . 09 1 . 11 1 . 14 1 . 17 1 . 20 1 . 22 1 . 25 1 . 27 1 . 30'' 251 . 0 1 . 32 1 . 35 1 . 37 1 . 39 1 .41 1 .44 1 .46 1 .48 1 . 50 1 . 52! 252 . 0 1. 54 POND 1 SECONDARY DISCHARGE (CFS) vs ELEVATION FEET 0 . 0 1 . 2 . 3 .4 . 5 . 6 . 7 . 8 . 9 248 . 0 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 249 . 0 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 250 . 0 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 251 . 0 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 7 . 37 252 . 0 10 .42 Data for Central Metal Finishing - Post Developed Page 99 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND 1 INFLOW & OUTFLOW Detention Pond 2 4 2 2 STOR-IND METHOD PEAK STOR= 03 AF 2 0 PEAK ELEU= 250 . 3 FT 1 g Qjn= 2 4 CFS Gout= 1 . 2 CFS i � 1 6 Qpri = 1 . 2 CFS Qsec= 0. 0 CFS 4- 1 4 LAG= 8 .8 MIN U 1 2 3 1 0 0 J 8 I 4 / \ 2 ` 0 0 m in m n m u� m in m m in m �n m m m 00 OJ Q� Q� m m N N m m Q' V Ln n 0 0 r- TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 100 ' TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND 1 INFLOW PEAK= 2 . 4 CFS -@ 12 . 06 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0- 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 . 1 . 1 . . 1 . 1 8 . 9.0 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 ' 9 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 40 . 1 . 1 . 1 . l . 1 . 1 . i 10 . 70 . 1 . 1 . 1 _ . 1 . 1 . 1 . 1 11 . 00 . 1 . 1 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 11 . 30 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 3 . 3 11 . 60 . 3 . 4 .4 . 5 . 6 . 6 . 7 . 8 . 8 . 9 ' 11 . 90 . 9 1 . 0 1 . 3 1 . 6 2 . 1 2 . 4 2 . 3 2 . 0 1 . 6 1 . 4 12 . 20 1 . 2 1 . 1 1 . 0 . 9 . 8 . 8 . 7 . 6 6 . 5 12 . 50 .4 . 4 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 '' 12 . 80 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 '' 13 . 10 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 13 . 40 . 2 . 2 . 2 . 2 .2 . 2 . 2 . 2 . 1 . 1 13 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1' 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l'' 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l' 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1' 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 16 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l'..' 17 . 00 . l Data for Central Metal Finishing - Post Developed Page 101 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND 1 TOTAL OUTFLOW PEAK= 1 . 2 CFS @ 1'2 . 21 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0.. 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 . 1 . 1 . 1 . 1 1 1 l l l 1 9 . 20 . 1 . 1 . 1 . 1 9 . 50 . 1 . 1 . 1 . 1 l l 1 1 l 1 9 . 80 . 1 . 1 . 1 . 1 10 . 10 . 1 . 1 . 1 . 1 10 . 40 . 1 . l 10 . 70 . L . l 1 l l l 1 l l l 11 . 00 . 1 . 1 . 1 . 1 . 1 . 2 . 2 . 2 . 2 . 2 11 . 30 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 11 . 60 . 3 . 3 . 3 . 3 . 4 . 4 . 5 . 5 . 5 . 6 11 . 90 . 6 . 7 . 7 . 8 . 9 1 . 0 1 . 1 1 . 1 1 . 1 1 . 1 12 . 20 1 . 2 1 . 2 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 12 . 50 1 . 0 1 . 0 . 9 . 9 . 8 . 8 . 7 . 7 . 6 . 6 12 . 80 . 5 . 5 . 5 .4 .4 . 3 .3 . 3 . 3 .2 13 . 10 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 13 . 40 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 13 . 70 . 2 . 2 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 .40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 16 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .1 17 . 00 . 1 Data for Central Metal Finishing - Post Developed Page 102 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND 1 2RIMARY OUTFLOW PEAK= 1 . 2 CFS @ 12 . 21 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . l l l 1 9 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 l 1 l 9 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . l l 1 1 9 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . l l l 1 10 .40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 11 . 00 . 1 . 1 . 1 . 1 . 1 . 2 . 2 . 2 . 2 . 2 11 . 30 . 2 . 2 .2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 11 . 60 .3 . 3 .3 . 3 .4 . 4 . 5 . 5 . 5 . 6 11 . 90 . 6 . 7 . 7 . 8 . 9 1 . 0 1 . 1 1 . 1 1 . 1 1 . 1 12 . 20 1 . 2 1 . 2 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 1 . 1 12 . 50 1 . 0 1 . 0 . 9 . 9 . 8 . 8 . 7 . 7 . 6 . 6 ' 12 . 80 . 5 . 5 . 5 .4 .4 . 3 . 3 . 3 . 3 . 2 13 . 10 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 13 .40 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 13 . 70 . 2 . 2 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1' 14 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l', 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1' 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1': 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1'! 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 .40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l' 17 . 00 . 1 Data for Central Metal Finishing - Post Developed Page 103 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND 1 SECONDARY OUTFLOW PEAK= 0 . 0 CFS @ 0 . 00 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 -0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 -. 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 : 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 .*70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 12 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 12 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 12 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 i Data for Central Metal Finishing - Post Developed Page 104 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems DE.S tCst� P®t NT � Not described Qin = 5 . 3 CFS @ 12 . 07 HRS, VOLUME= . 45 AF Qout= 5 . 3 CFS @ 12 . 07 HRS, VOLUME= . 45 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= 8-17 HRS, dt= . 03 HRS # ROUTE INVERT OUTLET DEVICES POND 2 INFLOW & OUTFLOW Not described 5 0 - METHOD PEAK STOR= 0 . 00 AF 4 5 PEAK ELEU= 0 FT 4 0 Qin= 5 3 CFS Qout= 5 3 CFS 3 5 LAG= 0 MIN U 3 .0 2 .5 3 O 2 .0 LL 1 .5 1 .0 5 0 0 m Ln m Ln m Ln m Ln m in m - ti m in m Ln m CO CD D) m m — N N m m V V Ln Ln 0 lD t� TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 105 TYPE III 24-HOUR RAINFALL= 4 . 8 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems ® F-5 14ffN - INFLOW PEAK= 5 . 3 CFS @ 12 . 07 HOURS Not described HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 8 . 30 . 1 8 . 60 . 1 8 . 90 . 1 . 1 . 1 . 2 . 2 . z . 2 . 2 . 2 . 2 9 . 20 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 9 . 50 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 9 . 80 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 10 . 10 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 10 . 40 . 3 . 3 . 3 . 3 -3 . 3 . 3 . 3 . 3 . 3 10 . 7 4 4 -14 .4 .4 . 4 . 4 . 4 . 4 . 4 11 . 00 . 4 . 4 . 4 .4 .4 . 5 . 5 . 5 . 5 . 5 11 . 30 . 5 . 6 . 6 . 6 . 6 . 6 . 7 . 7 . 7 . 8 11 . 60 . 9 1 . 0 1 . 1 1 . 3 1 .4 1 . 6 1 . 7 1 . 9 2 . 1 2 . 2 11 . 90 2 . 4 2 . 7 3 . 2 3 . 9 4 . 8 5 . 2 5 . 3 5 . 0 4 . 5 4 . 1 12 . 20 3 . 8 3 . 5 3 . 3 3 . 1 3 . 0 2 . 8 2 . 7 2 . 5 2 . 3 2 . 2 12 . 50 2 . 0 1 . 9 1 . 7 1 . 6 1 . 5 1 . 4 1 . 4 1 . 3 1 . 2 1 . 2 12 . 80 1 . 1 1 . 0 1 . 0 . 9 . 9 . 8 . 8 . 7 . 7 . 7 13 . 10 . 6 . 6 . 6 . 6 . 6 . 6 . 6 . 5 . 5 . 5 13 . 40 . 5 5 . 5 . 5 . 5 . 5 . 5 . 5 . 5 . 5 13 . 70 . 5 . 5 . 5 .4 .4 . 4 . 4 . 4 .4 .4 14 . 00 . 4 .4 .4 .4 .4 .4 .4 . 4 . 4 .4 14 . 30 . 4 . 4 . 4 .4 .4 . 4 . 4 .4 . 3 . 3 14 . 60 . 3 . 3 . 3 . 3 .3 . 3 . 3 . 3 . 3 . 3 14 . 90 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 15 . 20 . 3 . 3 . 3 .3 . 3 . 3 . 3 . 3 . 3 .3 15 . 50 . 3 . 3 .3 . 3 .3 . 3 . 2 . 2 . 2 .2 15 . 80 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 16 . 10 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 16 . 40 . 2 . 2 . 2 . 2 . 2 . 2' . 2 . 2 . 2 . 2 16 . 70 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 17 . 00 . 2 Data for Central Metal Finishing - Post Developed Page 106 TYPE III 24-HOUR RAINFALL= 7 . 0 IN ( 100 -YeAR. STop"� Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 1 Area Flowing to C.B. (Reach 1) PEAK= 3 . 3 CFS @ 12 . 03 HRS, VOLUME= .20 AF ACRES - CN SCS TR-20 METHOD .39 98 Pavement, Roof & Walkways TYPE III 24-HOUR . 06 74 Open °Space, Good, Soil C RAINFALL= 7 . 0 IN , .45 95 SPAN= 8-17 HRS, dt= . 03 HRS , Method Comment Tc (min) DIRECT ENTRY Average 3 . 2 SUBCATCHMENT 1 RUNOFF Area Flowing to C B ( Reach 1 ) 3 2 AREA= 45 AC 3 0 Tc= 3 . 2 MIN 2 . 8 CN= 95 2 . 6 SCS TR-20 METHOD 2 . 4 TYPE III 24-HOUR 2 . 2 RAINFALL= 7 0 IN c� 2 .0 PEAK= 3 . 3 CFS U 1 .8 @ 12 . 03 HRS v 1 . 6 UOLUME= . 20 AF 3 1 . 4 O 1 . 2 . 8 . 6 4 . 2 e . Om Ln m in m Ln m Ln m in m n m in m U) m in m 00 00 0) O) m 0 — — N •N M r*) v V Ln In W W r- TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 107 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E. NEVE ASSOCIATES, ' INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 1 RUNOFF PEAK= 3 . 3 CFS @ 12 . 03 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 8 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 8 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . l . 1 . 1 . 1 8 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 l 9 . 50 . l . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 l 9 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 l 10 . 10 . 1 . 1 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 10 . 40 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 10 . 70 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 11 . 00 . 2 . 2 . 2 . 2 . 2 . 3 . 3 . 3 . 3 .3 11 . 30 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 4 . 4 . 5 11 . 60 . 5 . 6 . 7 . 8 . 9 . 9 1 . 0 1 . 1 1 . 2 1 .3 11 . 90 1 . 4 1 . 6 2 . 1 2 . 8 3 . 3 3 . 2 2 . 7 2 . 1 1 . 6 1 .4 12 . 20 1 . 3 1 . 2 1 . 1 1 . 0 1 . 0 . 9 . 8 . 7 . 6 . 6 12 . 50 . 5 . 4 .4 . 4 . 3 . 3 . 3 . 3 . 3 . 3 12 . 80 . 3 . 3 . 3 . 3 . 3 . 3 . 2 . 2 . 2 .2 13 . 10 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 13 . 40 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 13 . 70 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 14 . 00 . 2 . 2 . 2 . 2 . 2 . 2 . 1 . 1 . 1 .1 14 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .1 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .1 16 .40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 17 . 00 . 1 Data for Central Metal Finishing - Post Developed Page 108 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 2 Area Flowing to Pond 1 PEAK= 3 . 6 CFS @ 12 . 06 HRS, VOLUME= . 23 AF ACRES CN SCS TR-20 METHOD .40 98 Pavement & Roof TYPE III 24-HOUR . 05 - 74 Open Space, Good, Soil C RAINFALL= 7 . 0 IN . 03 80 Open Space, Good, Soil D SPAN= 8-17 HRS, dt= . 03 HRS . 02 70 Woods, Good, Soil C . 04 72 Woods & Grass, Good, Soil C .54 92 Method Comment Tc (min)I DIRECT ENTRY Average 5 . 4 SUBCATCHMENT 2 RUNOFF Area Flowing to Pond 1 3 6 3 . 4 AREA= 54 AC 3 2 Tc= 5 4 MIN 3 0 CN= 92 2 . 8 SCS TR-20 METHOD 2 . 6 TYPE III 24-HOUR 2. 4 RAINFALL= 7 .0 IN 4 2. 2 PEAK= 3 . 6 CFS U 2 . 0 @ 12 . 06 HRS \-/ 1 g UOLUME= . 23 AF 3 1 . 6 CD 1 . 4 _1 1 . 2 LL 1 . 0 . 8 . 6 . 4 2 0 . 0 m Ln m Ln m Ln m m Ln m in m Ln m in m Ln m co 00 0) Q) m m - - N N M M Q' V Ln Ln 0 0 r- TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 109 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 2 -RUNOFF PEAK= 3 . 6 CFS @ 12 . 06 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 . 1 . 1 . 1 . l . 1 . 1 . 1 . 1 . 1 . l 8 . 30 . 1 . 1 . 1 . 1 . 1 . l 8 . 60 . 1 . 1 . 1 . 1 . l . 1 l l l l 8 . 90 . 1 . 1 . 1 . 1 . 1 . 1 1 1 1 1 9 . 20 . 1 . 1 . 1 . 1 . 1 . l l 1 1 l 9 . 50 . 1 . 1 . 1 . 1 . 1 . l l 1 1 l 9 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 2 . 2 10 . 10 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 10 . 40 . 2 . 2 . 2 . 2 . 2- . 2 _ . 2 . 2 . 2 . 2 10 . 70 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 11 . 00 . 2 . 2 . 2 . 3 . 3 . 3 . 3 . 3 . 3 . 3 11 . 30 . 3 . 3 . 3 . 3 .4 . 4 . 4 .4 . 4 . 5 11 . 60 . 5 . 6 . 7 . 8 . 9 1 . 0 1 . 1 1 . 2 1 . 3 1 . 4 11 . 90 1 . 5 1 . 6 1 . 9 2 . 5 3 . 1 3 . 6 3 . 5 3 . 1 2 . 5 2 . 0 12 . 20 1 . 8 1 . 6 1 . 5 1 . 4 1 . 3 1 . 2 1 . 1 1 . 0 . 9 . 8 12 . 50 . 7 . 6 . 5 . 5 . 4 . 4 .4 . 4 . 4 .4 12 . 80 . 4 . 4 . 3 . 3 .3 . 3 . 3 . 3 . 3 . 3 13 . 10 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 2 . 2 13 . 40 . 2 . 2 . 2 . 2 .2 . 2 . 2 . 2 . 2 . 2 13 . 70 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 00 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 30 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 60 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 1 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 16 .40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 17 . 00 . l Data for Central Metal Finishing - Post Developed Page 110 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems -SUBCATCHMENT 3 Area Flowing to Design Point #2 PEAK= 2 . 0 CFS @ 12 . 18 HRS, VOLUME= . 16 AF ACRES CN - SCS TR-20 METHOD . 34 70 Wooded, Good, Soil C TYPE III 24-HOUR . 13 77 Wooded, Good, Soil D RAINFALL= 7 . 0 IN . 06 74 Open Space, Good, Soil C SPAN= 8-17 HRS, dt= . 03 HRS . 03 80 Open Space, Good, Soil D . 56 73 Method Comment Tc (min)' TR-55 SHEET FLOW A to B 13 . 2 Woods : Light underbrush n= .4 L=100 ' P2=3 . 1 in s= . 07 SHALLOW CONCENTRATED/UPLAND FLOW B to C . 7 Unpaved Kv=16 . 1345 L=160 ' s= . 053 ' / ' V=3 . 71 fps Total Length= 260 ft Total Tc= 13 . 9 SUBCATCHMENT 3 RUNOFF Area Flowing to Design Point #2 2 . 0 AREA= . 56 AC 1 .8 Tc= 13 . 9 MIN CN= 73 1 . 6 SCS TR-20 METHOD TYPE III 24-HOUR 1 4 RAINFALL= 7 .0 IN 4- 1 . 2 PEAK= 2 . 0 CFS U @ 12 . 18 HRS 1 . 0 VOLUME= . 16 AF O .8 J LL .6 4 2 0 0m in m in m in m in m Ln m in m Ln m in m in m 00 00 On Q) m m N N m m V' V In Ln tD lD t-- TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 111 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 3 RUNOFF PEAK= 2 . 0 CFS @ 12 . 18 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 . 1 . 1 . 1 . 1 10 .40 _ . 1 . 1 . l 1 l l 1 l 1 l 10 . 70 . 1 . 1 11 . 00 . 1 . l 11 . 30 . 1 . 1 . 1 . 1 . 2 . 2 . 2 . 2 . 2 . 2 11 . 60 . 2 . 2 . 2 . 3 . 3 . 3 . 4 .4 . 5 . 6 11 . 90 . 6 . 7 . 8 . 9 1 . 0 1 . 3 1 . 5 1 . 8 1 . 9 2 . 0 12 . 20 2. 0 1 . 9 1 . 7 1 . 6 1 . 5 1 .4 1 . 3 1 . 2 1 . 1 1 . 0 12 . 50 . 9 . 8 . 7 . 7 . 6 . 5 . 5 . 4 . 4 . 4 12 . 80 . 4 . 4 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 13 . 10 . 3 . 3 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 13 . 40 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 13 . 70 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 00 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 30 . 2 . 2 . 2 . 2 . 2 . 1 . 1 . 1 . 1 . 1 14 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 80 . 1 . 1 . l . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 10 . 1 . 1 . 1 . l . 1 . 1 . 1 . 1 . 1 . 1 16 .40 . 1 . 1 . 1 . l . 1 . 1 . 1 . 1 . 1 . 1 16 . 70 . 1 . 1 . 1 . l . 1 . 1 . 1 . 1 . 1 . 1 17 . 00 . 1 i Data for Central Metal Finishing - Post Developed Page 112 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 4 Area Flowing to Design Point #3 PEAK= . 6 CFS @ 12 . 02 HRS, VOLUME= . 03 AF ACRES CN SCS TR-20 METHOD . 09 80 Open Space, Good, Soil D TYPE III 24-HOUR . 01 77 Woods, Good, Soil D RAINFALL= 7 . 0 IN . 10 80 SPAN= 8-17 HRS , dt= . 03 HRS Method Comment Tc (min DIRECT ENTRY Average 2 . 3 SUBCATCHMENT 4 RUNOFF Area Flowing to Design Point #3 60 AREA= 1 AC 55 Tc= 2 3 MIN CN-- 80 50 SCS TR-20 METHOD 45 TYPE III 24-HOUR RAINFALL= 7 . 0 IN 40 4- PEAK= .6 CFS U 35 @ 12 . 02 HRS v 30 UOLUME= . 03 AF CD . 25 . 20 LL. 15 . 10 . 05 O . Oe m o m L, m Ln m Ln m Ln m L mtf) (!D Ln m Ln m 00 m CT) O) m m N N f*7 f*] V V n m lD ID r� TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 113 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 4 RUNOFF PEAK= . 6 CFS @ 12 . 02 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 -0 . 0 0 . 0 _ 0 . 0 0 . 0 10 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0-, 0 . 0 0 . 0 0 . 0 0 . 0 11 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 . 1 . l 11 . 60 . 1 . 1 . 1 . 1 . 1 . 2 . 2 . 2 . 2 . 2 11 . 90 . 2 . 3 . 4 . 5 . 6 . 6 . 4 . 3 . 3 .3 12 .20 . 2 . 2 . 2 . 2 . 2 . 2 . 1 . 1 . 1 . l 12 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 12 . 80 . 1 . 1 . 1 . 1 . 1 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 114 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 O0b401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 5 Area Flowing to Design Point #1 PEAK= 4 . 1 CFS @ 12 . 10 HRS, VOLUME= . 28 AF ACRES CN SCS TR-20 METHOD . 34 98 Pavement, Roof & Walkways TYPE III 24-HOUR . 30 74 Open Space, Good, Soil-. 0 RAINFALL= 7 . 0 IN . 04 80 Open Space, Good, Soil D SPAN= 8-17 HRS, dt= . 03 HRS . 06 72 Woods & Grass, Good, Soil C . 74 85 Method Comment Tc (min) DIRECT ENTRY Average 8 . 1 SUBCATCHMENT 5 RUNOFF Area Flowing to Design Point # 1 4 .0 AREA= . 74 AC Tc= 8 , 1 MIN 3 .5 CN= 85 SCS TR-20 METHOD 3 . 0 TYPE III 24-HOUR RAINFALL= 7 .0 IN 4- 2 ,5 PEAK= 4 . 1 CFS U C' 12 . 1 HRS 2 .0 UOLUME= . 28 AF 3 O 1 .5 J LL_ 1 .8 .5 0 .0 -L m Ln m Ln m Ln m Ln m Ln m Ln m Ln m to m Ln Cis) co OJ 01 Q1 l9 m — N N M M V' 'T Ln Ln 0 ',0 r" TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 115 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 5 RUNOFF PEAK= 4. 1 CFS @ 12 . 10 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 . 1 . 1 . 1 l l 8 . 30 . 1 1 l l l 1 1 l l l 8 . 60 . 1 1 1 l 1 l 1 l 1 1 8 . 90 . 1 1 1 l 1 1 l 1 l l 9 . 20 . 1 9 . 50 . 1 9 . 80 . 1 10 . 10 . 1 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 10 .40 . 2 , 2 . 2 . 2 .2 . 2 . 2 . 2 . 2 . 2 10 . 74 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 11 . 00 . 2 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 .3 11 . 30 . 3 . 3 . 4 . 4 .4 . 4 .4 .4 . 4 . 5 11 . 60 . 5 . 6 . 7 . 8 . 9 1 . 0 1 . 1 1 . 2 1 . 3 1 . 5 11 . 90 1 . 6 1 . 7 1 . 9 2 . 3 2 . 9 3 . 6 4 . 0 4 . 1 3 . 7 3 . 2 12 . 20 2 . 8 2 . 4 2 . 2 2 . 0 1 . 8 1 . 7 1 . 6 1 . 4 1 . 3 1 . 2 12 . 50 1 . 0 . 9 . 8 . 7 . 6 . 6 . 6 . 5 . 5 . 5 12 . 80 . 5 . 5 . 5 . 5 . 4 .4 .4 .4 . 4 .4 13 . 10 .4 .4 . 4 . 3 . 3 . 3 . 3 . 3 . 3 . 3 13 .40 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 13 . 70 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 14 . 00 . 3 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 30 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 60 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 90 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 15 . 20 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 . 2 15 . 50 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 1 . 1 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 .40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 17 . 00 . l Data for Central Metal Finishing - Post Developed Page 116 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 1 Emergency Spillway(C.B. ) to C.B. Qin = 1 . 4 CFS @ 12 . 27 HRS, VOLUME= . 23 AF Qout= 1 . 4 CFS @ 12 . 30 HRS, VOLUME= . 23 AF, ATTEN= 0%, LAG= 1 . 8 MIN DEPTH END AREA DISCH (FT) (SO-FT) (CFS) 12 " PIPE STOR-IND+TRANS METHOD 0 . 0 0 . 0 0 . 0 PEAK DEPTH= . 40 FT . 1 0 . 0 . 1 n= . 015 PEAK VELOCITY= 4 . 8 FPS . 2 . 1 . 4 LENGTH= 285 FT TRAVEL TIME = 1 . 0 MIN . 3 . 2 . 8 SLOPE= . 017 FT/FT SPAN= 8-17 HRS, dt= . 03 HRS : 7 -. 6 _ 3 . 4 8 . 7 3 . 9 . 9 . 7 4 . 3 . 9 . 8 4 . 3 1 . 0 . 8 4 . 3 1. 0 . 8 4 . 0 REACH 1 INFLOW & OUTFLOW Emergency Spillway ( C B to C . B 1 4 \ 12" PIPE 1 . 3 I \ n= .015 L=285' S= . 017 1 . 2 I \ i \ STOR-IND+TRANS METHOD 1 . 1 I 1 VELOCITY= 4 . 8 FPS 1 0 I I TRAVEL= 1 MIN to g I 11 Q i n= 1 .4 CFS 4 Qout= 1 . 4 CFS U 8 I I LAG= 1 . 8 MIN 7 I 1 3 .6 I 1 O I 1 J 5 1 \ . 4 / \ r � . 3 r . 2 i 0. 0 m Ln m Ln m in m Ln m Ln m Ln m In m n m U'l m 00 00 Ch 0) m m N N M ryl V V Ln Ln 0 tD I- TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 117 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 1 INFLOW PEAK= 1 . 4 CFS @ 12 . 27 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1- . 1 8 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 8 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 10 . 1 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 10 . 40 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 _ _ .2 10 . 70 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 11 . 00 . 2 . 2 . 2 . 2 . 2 . 2 . 3 . 3 . 3 . 3 11 . 30 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 .4 .4 11 . 60 .4 . 4 . 5 . 5 . 5 . 6 . 6 . 7 . 8 . 8 11 . 90 . 9 . 9 1 . 0 1 . 1 1 . 1 1 . 2 1 . 3 1 . 3 1 .4 1 .4 12 . 20 1 .4 1 . 4 1 .4 1 . 4 1 .4 1 .4 1 .4 1 . 4 1 . 4 1 .-4 12 . 50 1 . 3 1 . 3 1 . 3 1 . 3 1 . 3 1 . 2 1 . 2 1 . 2 1 . 1 1 . 1 12 . 8.0 1 . 1 1 . 1 1 . 0 1 . 0 . 9 . 9 . 8 . 8 . 7 . 7 13 . 10 . 6 . 6 . 6 . 5 . 5 . 4 . 4 .4 .4 . 3 13 . 40 . 3 . 3 . 3 . 3 .3 . 3 . 2 . 2 . 2 . 2 13 . 70 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 14 . 00 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 14 . 30 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 14 . 60 . 2 . 2 . 2 . 2 . 2 . 2 .2 . 2 . 2 .2 14 . 90 . 2 . 2 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .1 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 16 . 40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 17 . 00 . 1 Data for Central Metal Finishing - Post Developed Page 118 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 1 -OUTFLOW PEAK= 1 . 4 CFS @ 12 . 30 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 . 1 . 1 _ . 1 . 1 . 1 . 1 l 8 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 .1 . 1 l 8 . 90 . 1 . 1 . 1 1 . 1 . 1 1 1 1 1 9 . 20 . 1 . 1 . 1 . 1 . 1 . 1 l 1 l l 9 . 50 . 1 . 1 . 1 . 1 . 1 . 1 9 . 80 . 1 . 1 . 1 . 1 . 1 . 1 10 . 10 . 1 . 1 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 10 .40 . 2 . 2 . 2 . 2- . 2 _ . 2 . 2 .2 . 2 . 2' 10 . 70 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 11 . 00 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .3 . 3 . 3 11 . 30 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 .4 11 . 60 . 4 . 4 .4 . 5 . 5 . 5 . 6 . 6 . 7 . 7', 11 . 90 . 8 . 9 . 9 1 . 0 1 . 1 1 . 1 1 . 2 1 . 3 1 . 3 1 . 4'' 12 . 20 1 .4 1 .4 1 .4 1 . 4 1 .4 1 . 4 1 . 4 1 .4 1 . 4 1 . 4 12 . 50 1 .4 1 . 3 1 . 3 1 . 3 1 .3 1 . 3 1 . 2 1 .2 1 . 2 1 . 1' 12 . 80 1 . 1 1 . 1 1 . 1 1 . 0 1 . 0 . 9 . 9 . 8 . 8 . 7' 13 . 10 . 7 . 6 . 6 . 6 . 5 . 5 . 4 .4 . 4 .4 13 .40 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 2 . 2 . 2 13 . 70 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 . 2 . 2! 14 . 00 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 . 2 . 2 14 . 30 . 2 . 2 . 2 . 2 .2 . 2 . 2 . 2 . 2 . 2 14 . 60 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 90 . 2 . 2 . 2 . 2 . 1 . 1 . 1 . 1 . 1 . l 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 16 .10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 16 .40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 17 . 00 . 1 Data for Central Metal Finishing - Post Developed Page 119 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 2 C.B. to D.M.H. Qin = 4 . 4 CFS @ 12 . 03 HRS, VOLUME= . 43 AF Qout= 4 . 4 CFS @ 12 . 04 HRS, VOLUME= . 43 AF, ATTEN= lo, LAG= . 1 MIN DEPTH END AREA DISCH (FT) (SO-FT) (CFS) 12" PIPE STOR-IND+TRANS METHOD 0 . 0 0 . 0 0 . 0 PEAK DEPTH= . 51 FT . 1 0 . 0 . 2 n= . 015 PEAK VELOCITY= 10 . 9 FPS . 2 . 1 . 7 LENGTH= 33 FT TRAVEL TIME = . 1 MIN . 3 .2 1 . 6 SLOPE= . 071 FT/FT SPAN= 8-17 HRS, dt= . 03 HRS . 7 . 6 6 . 9 . 8 . 7 8 . 0 . 9 . 7 8 . 8 . 9 . 8 8 . 9 1 . 0 . 8 8 . 8 1 . 0 . 8 8 . 2 REACH 2 INFLOW & OUTFLOW - C . B . to D M H . 12" PIPE 4 . 0 n= . 015 L=33' S= . 071 3 . 5 STOR-IND+TRANS METHOD VELOCITY= 10 . 9 FPS TRAUEL= . 1 MIN 3 . 0 LO Qin= 4 . 4 CFS 4- Gout= 4 .4 CFS U 2 5 LAG= . 1 MIN 2. 0 3 O J 1 . 5 LL 1 . 0 5 0 . 0 0 Ln m Ln m Ln m m Ln m Ln m in m Ln m Ln m O7 00 m m m m ^ N N r l !*1 V V Ln Ln 110 TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 120 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 2 INFLOW PEAK= 4 .4 CFS @ 12 . 03 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 8 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 2 . 2 . 2 8 . 60 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 8 . 90 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 9 . 20 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 9 . 50 . 2 . 2 . 2 . 2 . 2 . 3 . 3 . 3 . 3 . 3 9 . 80 . 3 . 3 . 3 . 3 .3 . 3 . 3 . 3 . 3 . 3 10 . 10 . 3 . 3 . 3 . 3 .3 . 3 . 3 . 3 . 3 . 3 10 . 40 . 3 . 3 .3 . 4 .4 . 4 .4 . 4 .4 . 4 ' 10 . 70 .4 . 4 . 4 .4 .4 . 4 . 4 .4 .4 . 4 ' 11 . 00 .4 . 4 . 5 . 5 . 5 . 5 . 5 . 5 . 5 . 6 11 . 30 . 6 . 6 . 6 . 6 . 6 . 7 . 7 . 7 . 7 . 8 11 . 60 . 9 1 . 0 1 . 1 1 . 2 1 .4 1 . 5 1 . 6 1 . 8 1 . 9 2 . 0 ' 11 . 90 2 . 2 2 . 5 3 . 0 3 . 7 4 . 3 4 . 3 3 . 9 3 . 3 2 . 9 2 . 8 12 . 20 2 . 7 2 . 6 2 . 6 2 . 5 2 .4 2 . 3 2 . 2 2 . 1 2 . 0 1. 9 12 . 50 1 . 8 1 . 7 1 . 7 1 . 7 1 . 6 1 . 6 1 . 6 1 . 5 1 . 5 1 . 5' 12 . 80 1 .4 1 . 4 1 . 3 1 . 3 1 . 2 1 . 2 1 . 1 1 . 1 1 . 0 1 . 0 13 . 10 . 9 . 9 . 8 . 8 . 7 . 7 . 7 . 6 . 6 . 6 13 . 40 . 5 . 5 . 5 . 5 . 5 . 5 . 4 .4 .4 . 4', 13 . 70 .4 . 4 . 4 . 4 .4 . 4 . 4 . 4 .4 . 4 14 . 00 .4 . 4 .4 . 3 .3 . 3 . 3 . 3 . 3 . 3 14 . 30 . 3 . 3 .3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 14 . 60 . 3 . 3 .3 . 3 .3 . 3 . 3 . 3 . 3 . 3 14 . 90 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3'' 15 . 20 . 3 . 3 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 15 . 50 . 2 . 2 .2 . 2 .2 . 2 . 2 . 2 . 2 . 2' 15 . 80 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 16 . 10 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 16 .40 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 . 2' 16 . 70 . 2 . 2 . 2 . 2 .2 . 2 . 2 . 2 . 2 . 2' 17 . 00 . 2 Data for Central Metal Finishing - Post Developed Page 121 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems REACH 2 OUTFLOW PEAK= 4 . 4 CFS @ 12 . 04 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 8 . 30 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 2 . 2 . 2 8 . 60 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 8 . 90 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 9 . 20 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 9 . 50 . 2 . 2 . 2 . 2 . 2 . 3 . 3 . 3 . 3 .3 9 . 80 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 10 . 10 . 3 . 3 . 3 . 3 . 3 . 3 .3 . 3 . 3 . 3 10 . 40 . 3 . 3 . 3 . 4 .4 . 4 .4 .4 . 4 .4 10 . 70 . 4 . 4 .4 .4 .4 . 4 . 4 .4 . 4 .4 11 . 00 . 4 . 4 . 5 . 5 . 5 . 5 . 5 . 5 . 5 . 6 11 . 30 . 6 . 6 . 6 . 6 . 6 . 7 . 7 . 7 . 7 . 8 11 . 60 . 9 1 . 0 1 . 1 1 . 2 1 . 4 1 . 5 1 . 6 1 . 8 1 . 9 2 . 0 11 . 90 2 . 2 2 . 4 3 . 0 3 . 7 4 . 3 4 . 3 3 . 9 3 .4 3 . 0 2 . 8 12 . 20 2 . 7 2 . 6 2 . 6 2 . 5 2 . 4 2 . 3 2 . 2 2 . 1 2 . 0 1 . 9 12 . 50 1 . 8 1 . 8 1 . 7 1 . 7 1 . 6 1 . 6 1 . 6 1 . 5 1 . 5 1 . 5 12 . 80 1 . 4 1 . 4 1 . 3 1 . 3 1 . 2 1 . 2 1 . 1 1 . 1 1 . 0 1 . 0 13 . 10 . 9 . 9 . 8 . 8 . 7 . 7 . 7 . 6 . 6 . 6 13 . 40 . 5 . 5 . 5 . 5 . 5 . 5 .4 .4 . 4 .4 13 . 70 .4 . 4 .4 .4 .4 . 4 .4 . 4 . 4 .4 14 . 00 . 4 . 4 .4 . 3 . 3 . 3 . 3 . 3 . 3 . 3 14 . 30 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 14 . 60 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 14 . 90 . 3 . 3 . 3 .3 . 3 . 3 . 3 . 3 . 3 .3 15 . 20 . 3 . 3 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 15 . 50 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 15 . 80 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 16 . 10 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 16 . 40 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 16 . 70 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 .2 17 . 00 . 2 Data for Central Metal Finishing - Post Developed Page 122 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND 1 Detention Pond - Qin = 3 . 6 CFS @ 12 . 06 HRS, VOLUME= . 23 AF Qout= 1 . 4 CFS @ 12 . 27 HRS, VOLUME= .23 AF, ATTEN= 610, LAG= 12 . 7 MIN Qpri= 1 . 4 CFS @ 12 . 27 HRS, VOLUME= . 23 AF Qsec= 0 . 0 CFS @ 0 . 00 HRS, VOLUME= 0 . 00 AF ELEVATION CUM. STOR STOR-IND METHOD (FT) (AF) PEAK STORAGE = 05 AF 248 . 0 0 . 00 PEAK ELEVATION= 251. 4 FT 250 . 0 . 02 FLOOD ELEVATION= 252 . 0 FT 252 . 0 . 06 START ELEVATI-ON= 248 . 0 FT SPAN= 8-17 HRS, dt= . 03 HRS # ROUTE INVERT OUTLET DEVICES 1 P 248 . 0 ' 5 .511 ORIFICE/GRATE Q= . 6 PI r^2 SQR (2g) SQR (H-r) 2 S 251 . 8 ' 2 .2 ' x 2 .2 ' HORIZONTAL ORIFICE/GRATE Q= . 6 Area SQR (2gH) Primary Discharge I 1=Orifice/Grate Secondary Discharge L-2=0rifice/Grate POND 1 TOTAL DISCHARGE (CFS) vs ELEVATION FEET 0 . 0 . 1 . 2 . 3 .4 . 5 . 6 . 7 . 8 . 9 248 . 0 0 . 00 . 03 . 11 . 21 . 33 .41 . 48 . 54 . 60 . 65 249 . 0 . 70 . 74 . 78 . 82 . 86 . 90 . 93 . 96 1 . 00 1 . 03 250 . 0 1 . 06 1 . 09 1 . 11 1 . 14 1 . 17 1 . 20 1 . 22 1 . 25 1 .27 1 . 30 '' 251 . 0 1 . 32 1 . 35 1 . 37 1 . 39 1 .41 1 .44 1 .46 1 .48 1 . 50 8 . 89 252 . 0 11. 96 POND 1 PRIMARY DISCHARGE (CFS) vs ELEVATION FEET 0 . 0 . 1 . 2 . 3 .4 . 5 . 6 . 7 . 8 . 9 ' 248 . 0 0 . 00 . 03 . 11 . 21 . 33 .41 .48 . 54 . 60 . 65 249 . 0 . 70 . 74 . 78 . 82 . 86 . 90 . 93 . 96 1 . 00 1 . 03 250 . 0 1 . 06 1 . 09 1 . 11 1 . 14 1 . 17 1 . 20 1 . 22 1 . 25 1 . 27 1 . 30 251 . 0 1 . 32 1 . 35 1 . 37 1 . 39 1 .41 1 .44 1 .46 1 .48 1 . 50 1 . 52 ' 252 . 0 1 . 54 POND 1 SECONDARY DISCHARGE (CFS) vs ELEVATION FEET 0 . 0 . 1 . 2 . 3 .4 . 5 . 6 . 7 . 8 . 9 ' 248 . 0 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 249 . 0 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 250 . 0 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 251 . 0 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 0 . 00 7 . 37' 252 . 0 10 . 42 Data for Central Metal Finishing - Post Developed Page 123 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND 1 INFLOW & OUTFLOW Detention Pond 3 6 3 . 4 STOR-IND METHOD 3 2 PEAK STOR= 05 AF 3 0 PEAK ELEU= 251 4 FT 2 8 Gin= 3 6 CFS 2 6 Qout= 1 4 CFS i � 2 . 4 Qpri = 1 4 CFS - Qsec= 0 0 CF.S G-- 2 . 2 LAG= 12 7 MIN U 2 . 0 \-/ 1 8 3 1 6 O 1 4 / 1 1 . 2 L- 1 0 / 8 / 6 / � 4 2 0 . 0 m �in m in m in m Ln m Ln m U) m in m Ln m in m 00 00 Q) 0) m m N N M M V "' n In 0 0 r- TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 124 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HVdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND 1 -INFLOW PEAK= 3 . 6 CFS @ 12 . 06 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 8 . 30 . 1 . 1 . 1 . l l l 1 1 l l 8 . 60 . 1 . 1 . 1 . 1 l l l 1 1 1 8 . 90 . 1 . 1 . 1 . 1 1 1 1 1 1 1 9 . 20 . 1 . 1 . 1 . l l l 1 1 1 1 9 . 50 . 1 . 1 . 1 . l 1 1 1 1 1 l 9 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 2 . 2 ' 10 . 10 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 10 . 40 . 2 . 2 . 2 . 2 . 2- _ . 2 . 2 .,2 2 . 2 10 . 70 . 2 . 2 . 2 . 2 . 2 .2 . 2 .2 . 2 . 2 11 . 00 . 2 . 2 . 2 . 3 . 3 . 3 . 3 .3 . 3 . 3 11 . 30 . 3 . 3 . 3 . 3 .4 .4 . 4 .4 . 4 . 5 ' 11 . 60 . 5 . 6 . 7 . 8 . 9 1 . 0 1 . 1 1 . 2 1 . 3 1 . 4 ' 11 . 90 1 . 5 1 . 6 1 . 9 2 . 5 3 . 1 3 . 6 3 . 5 3 . 1 2 . 5 2 . 0 12 . 20 1 . 8 1 . 6 1 . 5 1 .4 1 . 3 1 .2 1 . 1 1 . 0 . 9 . 8 12 . 50 . 7 . 6 . 5 . 5 . 4 . 4 . 4 .4 .4 .4 'j 12 . 80 .4 . 4 . 3 . 3 . 3 . 3 . 3 .3 . 3 . 3 13 . 10 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 2 . 2 13 . 40 . 2 . 2 .2 . 2 . 2 . 2 . 2 .2 . 2 . 2 13 . 70 , . 2 . 2 .2 . 2 . 2 . 2 . 2 .2 . 2 . 2', 14 . 00 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 30 . 2 . 2 .2 . 2 . 2 . 2 . 2 .2 . 2 . 2 14 . 60 . 2 . 2 .2 . 2 . 2 . 2 . 2 .2 . 2 . 1' 14 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1' 15 . 20 . 1 . 1 . 1 . 1 1 1 1 1 1 1 15 . 50 . 1 . 1 . 1 . l 1 l l l 1 l 15 . 80 . 1 . 1 . 1 . l 16 . 10 . 1 . 1 . 1 . 1 l l 1 l l 1 16 .40 . 1 . 1 . 1 . 1 l l l l l l! 16 . 70 . 1 . 1 . 1 . 1 17 . 00 . 1 Data for Central Metal Finishing - Post Developed Page 125 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND 1 TOTAL OUTFLOW PEAK= 1 .4 CFS @ 12 . 27 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 8 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 8 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 10 . 1 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 10 . 40 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 10 . 70 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 11 . 00 . 2 . 2 . 2 . 2 . 2 . 2 . 3 . 3 . 3 . 3 11 . 30 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 4 . 4 11 . 60 .4 . 4 . 5 . 5 . 5 . 6 . 6 . 7 . 8 . 8 11 . 90 . 9 . 9 1 . 0 1 . 1 1 . 1 1 . 2 1 . 3 1 . 3 1 . 4 1 . 4 12 . 20 1 .4 1 . 4 1 .4 1 .4 1 . 4 1 .4 1 .4 1 .4 1 . 4 1 . 4 12 . 50 1 . 3 1 . 3 1 . 3 1 . 3 1 . 3 1 . 2 1 . 2 1 . 2 1 . 1 1 . 1 12 . 80 1 . 1 1 . 1 1 . 0 1 . 0 . 9 . 9 . 8 . 8 . 7 . 7 13 . 10 . 6 . 6 . 6 . 5 . 5 . 4 . 4 .4 . 4 . 3 13 . 40 . 3 . 3 . 3 . 3 . 3 . 3 . 2 . 2 . 2 . 2 13 . 70 .2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 00 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 30 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 60 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 90 . 2 . 2 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 .40 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 16 . 70 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 17 . 00 . 1 Data for Central Metal Finishing - Post Developed Page 12C TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND 1 PRIMARY OUTFLOW PEAK= 1 . 4 CFS @ 12 . 27 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 , . 15 . 18 . 21 . 24 . 2i 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1- 8 . 60 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 3 8 . 90 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 9 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 3 9 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 3 9 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 10 . 10 . 1 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 10 . 40 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2, 10 . 70 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 11 . 00 . 2 . 2 . 2 . 2 . 2 . 2 . 3 . 3 . 3 . 3 11 . 30 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 4 11 . 60 . 4 . 4 . 5 . 5 . 5 . 6 . 6 . 7 . 8 f 11 . 90 . 9 . 9 1 . 0 1 . 1 1 . 1 1 . 2 1 . 3 1 . 3 1 . 4 1 . 4 12 . 20 1 .4 1 . 4 1 . 4 1 .4 1 .4 1 . 4 1 . 4 1 .4 1 .4 1 . 0 12 . 50 1 . 3 1 . 3 1 . 3 1 . 3 1 . 3 1 . 2 1 . 2 1 . 2 1 . 1 1 . _ 12 . 80 1 . 1 1 . 1 1 . 0 1 . 0 . 9 . 9 . 8 . 8 . 7 i 13 . 10 . 6 . 6 . 6 . 5 . 5 .4 .4 .4 . 4 . 3 13 . 40 . 3 . 3 . 3 . 3 . 3 . 3 . 2 . 2 . 2 13 . 70 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 00 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 30 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 60 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 14 . 90 . 2 . 2 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 15 . 20 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 1 15 . 50 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 15 . 80 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 16 . 10 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . l 1 16 . 40 . 1 . 1 . 1 . 1 l 1 l 1 1 16 . 70 . 1 . l l l l 1 1 l l 17 . 00 . 1 Data for Central Metal Finishing - Post Developed Page 127 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems POND 1 SECONDARY OUTFLOW PEAK= 0 . 0 CFS @ 0 . 00 HOURS HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 8 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 - 0 . 0 0 . 0 0 . 0 8 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 .0 . 0 0 . 0 0 . 0 8 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 9 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 10 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 ._0 0 . 0 0 . 0 10 . 70 0 . 0 0 . 0 -0 . 0 0 . 0 0 . 0 0-. 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 11 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 12 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 12 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 12 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 13 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 00 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 30 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 60 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 14 . 90 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 20 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 50 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 15 . 80 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 10 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 .40 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 16 . 70 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 0 . 0 17 . 00 0 . 0 Data for Central Metal Finishing - Post Developed Page 128 ; TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HYdroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems C�IJ P®1 N`r Not described Qin = 8 . 0 CFS @ 12 . 07 HRS, VOLUME= . 71 AF Qout= 8 . 0 CFS @ 12 . 07 HRS, VOLUME= . 71 AF, ATTEN= Oo, 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= 8-17 HRS, dt= . 03 HRS # ROUTE INVERT OUTLET DEVICES POND 2 INFLOW & OUTFLOW 8 0 Not described 7 5 - METHOD 7 0 PEAK STOR= 0 . 00 AF PEAK ELEV= 0 FT 6 5 6 .0 Qin= 8 . 0 CFS Qout= 8 .0 CFS 5 . 5 LAG= 0 MIN 4- 5 .0 U 4 .5 \-/ 4 0 :3 3 . 5 O 3 .0 J 2 .5 LL 2 .0 1 . 5 1 0 5 0 . 0 --m Ln m In m Ln m Ln m Ln m Ln m Ln m In m Ln m OD CC) m CD m m Ln Ln is 0 I- TIME ( hours ) Data for Central Metal Finishing - Post Developed Page 129 TYPE III 24-HOUR RAINFALL= 7 . 0 IN Prepared by THOMAS E. NEVE ,ASSOCIATES, INC. , TOPSFIELD, MA. 1 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems pF.Si(-vN Poi"-r :* 1 INFLOW PEAK= 8 . 0 CFS @ 12 . 07 HOURS Not described HOUR 0 . 00 . 03 . 06 . 09 . 12 . 15 . 18 . 21 . 24 . 27 8 . 00 . 1 . 1 . 1 . 1 . 1 . 1 . 1 . 2 . 2 . 2 8 . 30 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 . 2 8 . 60 . 2 . 2 . 2 . 2 . 2 . 3 . 3 . 3 . 3 . 3 8 . 90 . 3 . 3 .3 . 3 " . 3 . 3 . 3 . 3 . 3 . 3 9 . 20 . 3 . 3 .3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 9 . 50 . 4 . 4 . 4 .4 . 4 . 4 . 4 . 4 . 4 . 4 9 . 80 . 4 . 4 .4 .4 .4 . 4 . 4 . 4 . 4 .4 10 . 10 . 4 . 4 . 5 . 5 . 5 . 5 . 5 . 5 . 5 . 5 10 . 40 . 5 _ 5 . 5 . 5 . 5 . 6 . 6 . 6 . 6 . 6 10 . 70 . 6 . 6 . 6 . 6 . 6 . 6 . 7 . 7 . 7 . 7 11 . 00 . 7 . 7 . 7 . 7 . 7 . 8 . 8 . 8 . 8 . 9 11 . 30 . 9 . 9 1 . 0 1 . 0 1 . 0 1 . 1 1 . 1 1 . 1 1 . 2 1 . 3 11 . 60 1 . 4 1 . 6 1 . 8 2 . 0 2 . 2 2 . 5 2 . 7 3 . 0 3 . 2 3 . 5 11 . 90 3 . 7 4 . 2 4 . 9 6 . 0 7 . 2 7 . 9 7 . 9 7 .4 6 . 7 6 . 0 12 . 20 5 . 5 5 . 1 ' 4 . 7 4 . 5 4 .2 4 . 0 3 . 8 3 . 5 3 . 3 3 . 1 12 . 50 2 . 9 2 . 7 2 . 5 2 .4 2 .3 2 . 2 2 . 1 2 . 1 2 . 0 2 . 0 12 . 80 1 . 9 1 . 9 1 . 8 1 . 8 1 . 7 1 . 6 1 . 5 1 . 5 1 . 4 1 . 3 13 . 10 1 . 3 1 . 2 1 . 2 1 . 1 1 . 1 1 . 0 1 . 0 1 . 0 . 9 . 9 13 . 40 . 9 . 8 . 8 . 8 . 8 . 8 . 7 . 7 . 7 . 7 13 . 70 . 7 . 7 . 7 . 7 . 7 . 7 . 6 . 6 . 6 . 6 14 . 00 . 6 . 6 . 6 . 6 . 6 . 6 . 6 . 6 . 6 . 6 14 . 30 . 6 . 6 . 5 . 5 .5 . 5 . 5 . 5 . 5 . 5 14 . 60 . 5 . 5 . 5 . 5 . 5 . 5 . 5 . 5 . 5 . 5 14 . 90 . 5 . 5 . 5 . 5 . 5 . 5 .4 . 4 . 4 .4 15 . 20 .4 .4 . 4 . 4 .4 . 4 .4 . 4 . 4 .4 15 . 50 . 4 .4 . 4 .4 .4 . 4 . 4 .4 . 4 .4 15 . 80 .4 . 3 .3 . 3 . 3 . 3 . 3 . 3 . 3 .3 16 . 10 . 3 . 3 . 3 . 3 .3 . 3 . 3 . 3 . 3 .3 16 . 40 . 3 . 3 . 3 . 3 .3 . 3 . 3 . 3 . 3 . 3 16 . 70 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 . 3 17 . 00 . 3 ARPND1 X 130 TIME OF CONCENTRATION AND TRAVEL TIME Version 2 . 00 Project Central Metal (Pre Dev. ) User: JM Date: 08-01-95 County Essex State : MA Checked: Date: Subtitle : Times of Concentration for Subcatchment 1 ----------------------------- Subarea #1 - Path 1 ----------------------------- Flow Type 2 year Length Slope Surface n Area Wp Velocity Time rain (ft) (ft/ft) code (sq/ft) (ft) (ft/sec) (hr) - ------------------------------------------------------------ ------ ------------ Sheet 3 . 1 100 . 075 f 0 . 142 Shallow Concent' d 65 . 069 u 0 . 004 Shallow Concent' d 45 . 033 p 0 . 003 Time of Concentration = 0 . 15* ----------------------------- Subarea #2 - Path 2 ----------- ------------------ Flow Type 2 year Length Slope Surface n Area Wp Velocity Time rain (ft) (ft/ft) code (sq/ft) (ft) (ft/sec) (hr) -------------- ----------------------------------------------- ------ ------------ Sheet 3 . 1 30 . 183 h 0 . 057, Sheet 25 . 088 f 0 . 044 Shallow Concent' d 200 . 034 u 0 . 019' Shallow Concent'd 45 . 033 p 0 . 003 Time of Concentration = 0 . 12* ----------------------------- Subarea #3 - Path 3 ----------------- ------------' Flow Type 2 year Length Slope Surface n Area Wp Velocity Time rain (ft) (ft/ft) code (sq/ft) (ft) (ft/sec) (hr) Sheet 3 . 1 30 . 167 h 0 . 059 Sheet 25 . 18 f 0 . 033 Shallow Concent'd 90 . 04 p 0 . 006 Shallow Concent 'd 360 . 014 p 0 . 042' Time of Concentration = 0 . 14* --------- --- ----------------- Subarea #4 - Path 4 ----------------- ------------ Flow Type 2 year Length Slope Surface n Area Wp Velocity Time rain (ft) (ft/ft) code (sq/ft) (ft) (ft/sec) (hr) ------------ --- ---------------------------------------------- ------ ------------ Sheet 3 . 1 35 . 086 f 0 . 058 Sheet 40 . 045 a 0 . 007 Shallow Concent' d 175 . 018 p 0 . 018 Time of Concentration = 0 . 08* o.i5t O.IZt c.14t 0.08 ..t. _ - p. 1 ZZS N r 'A �oO ri►��/�tz> ►N C. `} T���vcrj —7.4 M I r-1 TIME OF CONCENTRATION AND TRAVEL TIME Version 2 . 00 Project Central Metal (Pre Dev. ) User: JM Date : 08-01-95 County Essex State : MA Checked: Date : Subtitle : Times of Concentration for Subcatchment 1 --- Sheet Flow Surface Codes --- A Smooth Surface F Grass, Dense --- Shallow Concentrated --- B Fallow (No Res . ) G Grass, Burmuda --- Surface Codes --- C Cultivated < 20 % Res . H Woods, fight P Paved D Cultivated > 20 % Res . I Woods, Dense U Unpaved E Grass-Range, Short J Range, Natural )3Z TIME OF CONCENTRATION AND TRAVEL TIME Version 2 . 00 Project Central Metal (Pre Dev. ) User: JM Date : 08-01-95 County Essex State : MA Checked: Date : Subtitle : Times of Concentration for Subcatchment 3 --- -------------------------- Subarea #1 - Path 1 ----------------------------- Flow Type 2 year Length Slope Surface n Area Wp Velocity Time rain (ft) (ft/ft) code (sq/ft) (ft) (ft/sec) (hr) - -- ---------------------------------------------------------------------------- Sheet 3 . 1 25 . 022 f 0 . 077 Time of Concentration = 0 . 08* - ----- ----------------------- Subarea #2 —Path 2 ----------------------------- Flow Type 2 year Length Slope -Surface n Area - Wp Velocity Time rain (ft) (ft/ft) code (sq/ft) (ft) (ft/sec) (hr) --------------------------------------------------------------- ---------------- Sheet 3 . 1 20 . 135 f 0 . 031 Time of Concentration = 0 . 03* - ---------------------------- Subarea #3 - Path 3 ----------------------------- Flow Type 2 year Length Slope Surface n Area Wp Velocity Time rain (ft) (ft/ft) code (sq/ft) (ft) (ft/sec) (hr) - -- ------------------------------------------------------------ ---------------- Sheet 3 . 1 30 . 267 e 0 . 022 Shallow Concent' d 15 . 047 u 0 . 001 '' Time of Concentration = 0 . 02* --- Sheet Flow Surface Codes --- A Smooth Surface F Grass, Dense --- Shallow Concentrated --- B Fallow (No Res . ) G Grass, Burmuda --- Surface Codes --- C Cultivated < 20 % Res . H Woods, Light P Paved D Cultivated > 20 % Res . I Woods, Dense U Unpaved E Grass-Range, Short J Range, Natural 0.06t O.03-t O.oZ 0.043 Hr x (Co0MIt-A/ = Z.CvO Mtty T`'avcr) 3 G 2.00 0 M 1t,3 (AVCs� 133 TIME OF CONCENTRATION AND TRAVEL TIME Version 2 . 00 Project Central Metal (Post Dev. ) User: JM Date : 08-01-95 County Essex State : MA Checked: Date : Subtitle : Times of Concentrations for Subcatchment 1 ----------------------------- Subarea #1 - Path 1 ----------------------------- Flow Type 2 year Length Slope Surface n Area Wp Velocity Time rain (ft) (ft/ft) code (sq/ft) (ft) (ft/sec) (hr) -------------------------------------------------- ----------------------------- Sheet 3 . 1 25 . 136 f 0 . 037 Sheet 65 . 062 a 0 . 009 Shallow Concent' d 45 . 006 p 0 . 008 Time of Concentration = 0 . 05* ----------------------------- Subarea #2 - Path 2 ----------------------------- Flow Type 2 year Length Slope Surface n Area Wp Velocity Time rain (ft) (ft/ft) code (sq/ft) (ft) (ft/sec) (hr) -------------------------------------------------- ----------------------------- Sheet 3 . 1 20 . 125 f 0 . 032 Sheet 80 . 024 a 0 . 016 Shallow Concent' d 160 . 014 p 0 . 018 Time of Concentration = 0 . 07* ----------------------------- Subarea #3 - Path 3 ----------------------------- Flow Type 2 year Length Slope Surface n Area Wp Velocity Time rain (ft) (ft/ft) code (sq/ft) (ft) (ft/sec) (hr) ------------------------------------------------------------------------------- Sheet 3 . 1 80 . 059 a 0 . 011 Shallow Concent' d 230 . 01 p 0 . 031 Time of Concentration = 0 . 04* --- Sheet Flow Surface Codes --- A Smooth Surface F Grass, Dense --- Shallow Concentrated --- B Fallow (No Res . ) G Grass, Burmuda --- Surface Codes --- C Cultivated < 20 % Res . H Woods, Light P Paved D Cultivated > 20 % Res . I Woods, Dense U Unpaved E Grass-Range, Short J Range, Natural T _ 0.05-t o.o-t-t 0.04 _ 0. 053 x (GoM1N/HRH = 3.zo M�►o T 3. z ratimot. G 34 TIME OF CONCENTRATION AND TRAVEL TIME Version 2 . 00 Project Central Metal (Post Dev. ) User: JM Date : 08-01-95 County Essex State : MA Checked: Date : Subtitle : Times of Concentrations for Subcatchment 2 ----------------------------- Subarea #1 - Path 1 ----------------------------- Flow Type 2 year Length Slope Surface n Area Wp Velocity Time rain (ft) (ft/ft) code (sq/ft) (ft) (ft/sec) (hr) Sheet 3 . 1 25 . 126 h 0 . 057 Sheet 25 . 30 f 0 . 0271 Shallow Concent' d 160 . 003 p 0 . 040 Shallow Concent'd 35 . 114 u 0 . 002 Time of Concentration = 0 . 13* ----------------------------- Subarea #2 - Path 2 ----------------------------- Flow Type 2 year Length Slope Surface n Area Wp Velocity Time rain (ft) (ft/ft) code (sq/ft) (ft) (ft/sec) (hr) --- --------------------------------------------------------------------------- Sheet 3 . 1 25 . 200 h 0 . 048 ' Sheet 25 . 200 f 0 . 032 ' Shallow Concent'd 210 . 005 p 0 . 041 Shallow Concent' d 35 . 114 u 0 . 002 ' Time of Concentration = 0 . 12* ----------------------------- Subarea #3 - Path 3 ----------------------------- Flow Type 2 year Length Slope Surface n Area Wp Velocity Time rain (ft) (ft/ft) code (sq/ft) (ft) (ft/sec) (hr) ------------------------------------------------------------------------------- Sheet 3 . 1 80 . 019 a 0 . 018 Shallow Concent'd 12 . 333 u 0 . 000 Time of Concentration = 0 . 02* --- Sheet Flow Surface Codes --- A Smooth Surface F Grass, Dense --- Shallow Concentrated --- B Fallow (No Res . ) G Grass, Burmuda --- Surface Codes --- C Cultivated < 20 % Res . H Woods, Light P Paved D Cultivated > 20 o Res . I Woods, Dense U Unpaved E Grass-Range, Short J Range, Natural 4.13t o. �Z + O.O T� _ Z N r) = S.4 �`'► �,.� AV(s) 3 TC. - 5.4 c� cA��� TIME OF CONCENTRATION AND TRAVEL TIME Version 2 . 00 Project Central Metal (Post Dev. ) User: JM Date : 08-01-95 County Essex State : MA Checked: Date : Subtitle : Times of Concentrations for Subcatchment 4 ----------------------------- Subarea #1 - Path 1 ----------------------------- Flow Type 2 year Length Slope Surface n Area Wp Velocity Time rain (ft) (ft/ft) code (sq/ft) (ft) (ft/sec) (hr) ----------=-------------------------------------------------------------------- Sheet 3 . 1 20 . 040 f 0 . 051 Time of Concentration = 0 . 05* -----------------=----------- Subarea #2 - Path 2 ----------------------------- Flow Type 2 year Length Slope Surface n Area Wp Velocity Time rain (ft) (ft/ft) code (sq/ft) (ft) (ft/sec) (hr) ------------------------------------------------------------------------------- Sheet 3 . 1 8 . 500 f 0 . 009 Time of Concentration = 0 . 01* ----------------------------- Subarea #3 - Path 3 ----------------------------- Flow Type 2 year Length Slope Surface n Area Wp Velocity Time rain (ft) (ft/ft) code (sq/ft) (ft) (ft/sec) (hr) ---------------------------- --------------------------------------------------- Sheet 3 . 1 30 . 140 f 0 . 042 Time of Concentration = 0 . 04* ----------------------------- Subarea #4 - Path 4 ----------------------------- Flow Type 2 year Length Slope Surface n Area Wp Velocity Time rain (ft) (ft/ft) code (sq/ft) (ft) (ft/sec) (hr) ----------------------------------------------------------------------------- Sheet 3 . 1 20 . 15 f 0 . 030 Sheet 7 . 143 h 0 . 020 Time of Concentration = 0 . 05* --- Sheet Flow Surface Codes --- A Smooth Surface F Grass, Dense --- Shallow Concentrated --- B Fallow (No Res . ) G Grass, Burmuda --- Surface Codes --- C Cultivated < 20 % Res . H Woods, Light P Paved D Cultivated > 20 o Res . I Woods, Dense U Unpaved E Grass-Range, Short J Range, Natural T _ �•4S t o.o O.o4 0.05 Z.Z rN►rJ M C. 13 Co TIME OF CONCENTRATION AND TRAVEL TIME Version 2 . 00 Project Central Metal (Post Dev. ) User: JM Date : 08-01-95 County Essex State : MA Checked: Date : Subtitle : Times of Concentrations for Subcatchment 5 - ----------- -- --- ------------ Subarea #1 — Path 1 --------------- -------------- Flow Type 2 year Length Slope Surface n Area Wp Velocity Time rain (ft) (ft/ft) code (sq/ft) (ft) (ft/sec) (hr) - ------------- -------------- ---------------------- ---------------------------- Sheet 3 . 1 100 . 075 f 0 . 142 Shallow Concent ' d 65 . 069 u 0 . 004 Shallow Concent' d 45 . 033 p 0 . 003 Time of Concentration = 0 . 15* ---------------------------- - Subarea #2 - Path 2 -------------- --- ------------ Flow Type 2 year Length Slope Surface n Area Wp Velocity Time rain (ft) (ft/ft) code (sq/ft) (ft) (ft/sec) (hr) ------------------------- ------------------------------------------------------ Sheet 3 . 1 30 . 183 h 0 . 057 Sheet 25 . 088 f 0 . 044' Shallow Concent 'd 200 . 034 u 0 . 019' Shallow Concent 'd 45 . 033 p 0 . 003 Time of Concentration = 0 . 12* --- Sheet Flow Surface Codes --- A Smooth Surface F Grass, Dense --- Shallow Concentrated --- B Fallow (No Res . ) G Grass, Burmuda --- Surface Codes --- C Cultivated < 20 % Res . H Woods, Light P Paved D Cultivated > 20 o Res . I Woods, Dense U Unpaved E Grass-Range, Short J Range, Natural O.�S t o.�Z 0. 135 T G Z_ Hr x ((oo rz-ll►J/H,r) = 8. MI rJ (A V C,) T = 8.I Mir► C_:(A%J Cr 13-7 TIME OF CONCENTRATION AND TRAVEL TIME Version 2 . 00 Project Central Metal (Pre Dev. ) User: JM Date : 08-08-95 County Essex State : MA Checked: Date : Subtitle : Tc from Design -Point 1 to catchbasin ----------------------------- Subarea #1 - Path 1 ----------------------------- Flow Type Length Slope Surface n Area Wp Velocity Time (ft) (ft/ft) code (sq/ft) (ft) (ft/sec) (hr) ------------------------------------------------------------------------------- Shallow Concent'd 160 . 0128 p 0 . 019 Time of Concentration = 0 . 02* --- Sheet Flow Surface Codes --- A Smooth Surface F Grass, . Dense --- Shallow Concentrated_ --- B Fallow (No Res . ) G Grass, Burmuda- --- Surface Codes --- C Cultivated < 20 o Res . H Woods, Light P Paved D Cultivated > 20 a Res . I Woods, Dense U Unpaved E Grass-Range, Short J Range, Natural G Note Aou:Gn5 t_tilS low le-r-) to :S Q6. 1 ..a►11 resvt� 1n A '' TI'+G �'ollo�,ain5 PaoJe.S 51.,ow 1-►p�..� -ih�'g �.ai�1 e��eG,.'�' }he ;low\ rate of 5Qb 1. X38 Data for Central Metal Finishing - Pre Developed TYPE III 24-HOUR RAINFALL= 2 . 6 IN (1 Yr Storm) Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 6 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 1 Area Flowing to Design Point #1 PEAK= 2 . 3 CFS @ 12 . 11 HRS, VOLUME= . 15 AF ACRES CN SCS TR-20 METHOD . 73 98 Pavement, Roof & Walkways TYPE III 24-HOUR . 53 74 Open Space, Good, Soil - C RAINFALL= 2 . 6 IN . 06 80 Open Space, Good, Soil D SPAN= 8-17 HRS, dt= . 03 HRS . 02 70 Woods, Good, Soil C . 09 72 Woods & Grass, Good, Soil C . 09 89 Gravel Area . 01 91 Gravel Area 1. 53 87 Method Comment Tc (min` DIRECT ENTRY Average 8 . 6 SUBCATCHMENT 1 RUNOFF Area Flowing to Design Point # 1 2 AREA= 1 .53 AC 2 . 0 Tc= 8 . 6 MIN CN= 87 1 .8 SCS TR-20 METHOD TYPE III 24-HOUR 1 6 RAINFALL= 2 6 IN LO 4- 1 .4 PEAK= 2 . 3 CFS U 1 2 @ 12 . 11 HRS \-/ 1 .2 . 15 AF 3 1 . 0 CD 8 LL 6 4 . 2 0 .0 m in m Ln m Un m n m n m Ln m U) m Ln m Ln m M OD 0) Q) m m — N N �Tl l [( D In l0 110 t� TIME ( hours ) 13� Data for Central Metal Finishing - Pre Developed TYPE III 24-HOUR RAINFALL= 3 .1 IN (2 Yr Storm) Prepared by THOMAS E. NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 6 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 1 Area Flowing to Design Point #1 PEAK= 3 . 0 CFS @ 12 . 11 HRS, VOLUME= . 20 AF ACRES CN SCS TR-20 METHOD . 73 98 Pavement, Roof & Walkways TYPE III 24-HOUR . 53 74 Open Space, - Good, Soil C RAINFALL= 3 . 1 IN . 06 80 Open Space, Good, Soil D SPAN= 8-17 HRS, dt= . 03 HRS . 02 70 Woods, Good, Soil C . 09 72 Woods & Grass, Good, Soil C . 09 89 Gravel Area . 01 91 Gravel Area 1 . 53 87 Method Comment Tc (min) DIRECT ENTRY Average 8 . 6 SUBCATCHMENT 1 RUNOFF Area Flowing to Design Point # 1 3 0 2 . 8 AREA= 1 . 53 AC 2 .6 Tc= 8 6 MIN CN= 87 2 . 4 2 2 SCS TR-20 METHOD TYPE III 24-HOUR ^ 2 .0 RAINFALL= 3. 1 IN 4- 1 , 8 PEAK= 3 . 0 CFS U 1 6 @ 12 . 11 HRS UOLUME= . 20 AF 1 . 4 CD 1 . 2 J 1 . 0 .8 . 6 . 4 2 0 .0 0 Lo 0 Un 0 If) 0 Lo 0' in 0 U) 0 m Un 0 n 0 OD W M M 0 0 N N M M V V In to W lD r� TIME ( hours ) � 9-0 Data for Central Metal Finishing - Pre Developed TYPE III 24-HOUR RAINFALL= 4 . 8 IN (10 Yr Storm) Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 6 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 1 Area Flowing to Design Point #1 PEAK= 5 . 4 CFS @ 12 . 11 HRS, VOLUME= . 37 AF ACRES CN SCS TR-20 METHOD . 73 98. Pavement, Roof & Walkways TYPE III 24-HOUR . 53 74 Open Space, Good, Soil C RAINFALL= 4 . 8 IN . 06 80 Open Space, Good, Soil D SPAN= 8-17 HRS, dt= . 03 HRS . 02 70 Woods, Good, Soil C . 09 72 Woods & Grass, Good, Soil C . 09 89 Gravel Area . 01 91 Gravel Area 1 . 53 87 Method Comment Tc (min` DIRECT ENTRY Average 8 . 6 ' SUBCATCHMENT 1 RUNOFF Area Flowing to Design Point # 1 5 .0 AREA= 1 . 53 AC Tc= 8 6 MIN 4 .5 CN= 87 SCS TR-20 METHOD 4 . 0 TYPE III 24-HOUR RAINFALL= 4. 8 IN 3 .5 4- PEAK= 5 . 4 CFS U 3.0 e 12 . 11 HRS UOLUME= .37 AF 2 .5 3 CD 2 . 0 J LL 1 . 5 1 . 0 5 0. 0m Un m U) m in m m in m m Ln m Ln m Ln m CO OJ Q) M m m N N M M V' IT In Ln l0 W r, TIME ( hours ) Data for Central Metal Finishing - Pre Developed TYPE III 24-HOUR RAINFALL= 7 . 0 IN (100 Yr Storm) Prepared by THOMAS E . NEVE ASSOCIATES, INC. , TOPSFIELD, MA. 6 Aug 95 HydroCAD 4 . 00 000401 (c) 1986-1995 Applied Microcomputer Systems SUBCATCHMENT 1 Area Flowing to Design Point ##1 PEAK= 8 . 6 CFS @ 12 . 10 HRS, VOLUME= . 60 AF ACRES CN SCS TR-20 METHOD . 73 98 Pavement, Roof & Walkways TYPE III 24-HOUR . 53 74 Open Space, Good, Soil C RAINFALL= 7 . 0 IN . 06 80 Open Space, Good, Soil D SPAN= 8-17 HRS, dt= . 03 HRS . 02 70 Woods, Good, Soil C . 09 72 Woods & Grass, Good, Soil C . 09 89 Gravel Area . 01 91 Gravel Area _ 1 . 53 87 Method Comment Tc (min) DIRECT ENTRY Average 8 . 6 SUBCATCHMENT 1 RUNOFF Areo Flowing to Design Point # 1 8 5 8 . 0 AREA= 1 .53 AC Tc= 8 . 6 MIN 7 5 CN= 87 7 . 0 6 . 5 SCS TR-20 METHOD TYPE III 24-HOUR 6 . 0 RAINFALL= 7 . 0 IN LO 5 . 5 4- 5 0 PEAK= 8 .6 CFS u @ 1 2 . 1 HRS 4 . 5 UOLUME= . 60 AF 4 . 0 O 3 . 5 J 3 .0 V_ 2 . 5 2 . 0 1 . 5 1 . 0 . 5 0 , 121 CS) U) m Ln m Ln m Ln m in m Ln m Ln m Ln m Ln m Co 40 M 0) m m ^ N N M M V [I Ln n 0 l0 I� TIME ( hours )