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HomeMy WebLinkAboutApplication - 815 CHESTNUT STREET 6/14/1990 (2) SITE PLAN REVIEW WATTS REGULATOR CO. Proposed 4,000 S.F. Addition March 30, 1990 I WATTS REGULATOR ABUTTERS MAP LOT OWNER ADDRESS 98D 42 CHESTNUT GREEN RT 1.34 WELLESLEY STREET J.J. O ' BRIEN & J.MAYNARD WESTON, MA 107C 109 ROBSON REALTY TRUST K L MASON & R MACLAURIN 136 MOUNT VERNON STREET BOSTON, MA " 86 CORNELIUS J & MARY ELLEN 57 MILL ROAD VAN DEVENTER NO. ANDOVER, MA 01845 " 81 THOMAS J MURPHY 75 MILL ROAD NO. ANDOVER, MA 01845 4 HELEN M KELLNER 920 TURNPIKE STREET NO. ANDOVER, MA 01845 " 21 EDWARD W & CLAIRE E 931 TURNPIKE STREET PHELAN NO. ANDOVER, MA 01845 " 85 PETER P & BRENDA R 834 TURNPIKE STREET PHELAN NO. ANDOVER, MA 01845 " 19 LOUIS C & EDITH FIORE 846 CHESTNUT STREET NO. ANDOVER, MA 01845 " 26 ETHEL E. , DAVID W. & 835 CHESTNUT STREET MARY E. MOORE ET. ALS. NO. ANDOVER/ MA 01845 " 27 THOMAS & MARY CRABTREE 857. CHESTNUT STREET NO. ANDOVER, MA 01845 " 43 JOHN A. & JOAN M. GROVER 35 MARIAN DRIVE NO. ANDOVER, MA 01845 " 58 HEINZ & EVA MARIA MARIAN DRIVE WESTPHALEN NO. ANDOVER, MA 01845 " 57 LOUIS G. & JOYCE A. 44 MARIAN DRIVE BOWAB NO. ANDOVER, MA 01845 " 56 JOSEPH L. & GERTRUDE A. 66 MARIAN DRIVE.- IANNAZZI NO. ANDOVER, MA 01845 " 67 ELIA A. & MARY S. 53 MARION DRIVE MOTTOLA NO. ANDOVER, MA 01845 " 45 THEODORE C. HADDAD 79 MARIAN DRIVE NO. ANDOVER, MA 01845 WATTS REGULATOR ABUTTERS Page 2 " 79 MARASCO NOMINEE TRUST HOLT ROAD PATRICK V. MARASCO, JR. ANDOVER, MA 01810 23 JERRY A. GOLDLUST BOX 121 CARLISLE, MA 01741 " 71 RAGWOOD REALTY TRUST 801 TURNPIKE ROBERT P. REGAN, JR. , NO. ANDOVER, MA 01845 TRUSTEE 22 WATTS REGULATOR CO. P.O. BOX 628 10 EMBANKMENT STREET LAWRENCE, MA 01842 " 72 THE WILLOWS PROFESSIONAL 865 TURNPIKE STREET PARK SOUTH CONDOMINIUM NO. ANDOVER, MA 01845 CAB/LS8065-1/per NARRATIVE REPORT Watts Regulator Co. has its corporate headquarters located at Salem Turnpike (Route 114) and Chestnut Street in North Andover. Presently they occupy a two-story building with a footprint area of about 12 , 300 S. F. The Research and Design Department is locat- ed in cramped quarters in the basement and occupies about 2500 S.F. of space. Watts Regulator Co. proposes to move the Research and Design Department out of the cramped quarters in the basement and into a new 4 , 000 S . F. one story addition (80 ' by 501 ) , with the abandoned area in the basement becoming storage space . As per Section 8 . 3 of the Town of North Andover Zoning Bylaw, we hereby file an "Application for Site Plan Review - Special Per- mit" as a "Minor Development" for the proposed addition. PARKING SPACES Since existing employees will occupy the proposed addition, and no new employees are proposed, an increase in the number of parking spaces at the site is not required. (See affidavit in Exhibit B. ) TRAFFIC since existing employees will occupy the proposed addition, and no new employees are proposed, no increase in traffic at the site is anticipated. SEWER FLOW Since existing employees will occupy the proposed addition, and no new employees are proposed, and further since no new toilet facilities are proposed, no increase in sewer flows are antici- pated. WETLANDS As per the Wetlands Protection Act, MGL Chapter 131 Section 40 and the Town of North Andover Wetland Bylaw, the only wetlands observed on site were a thin ring of cat-tails inside the exist- ing detention basin on the edge of the existing water surface of the pond. As the proposed work for the addition will be more than 100 feet away from these wetlands plants, the project in our opinion does not come under the jurisdiction. of the Wetlands Protection Act. CAB/RE8055-2/cab LANDSCAPING The existing cherry trees displaced by the proposed addition will be relocated around the addition . A planter much like that ringing the existing building will be created around the addi- tion. DRAINAGE Drainage runoff calculations were performed (see Exhibit C) by using "HydroCAD tm" storm modeling system created by Applied Microcomputer Systems of Chocorua NH, which is based on the TR-20 method developed by the Soil Conservation service as outlined in the "S. C.S. Technical Release 20" . An SCS Type III storm for the 100, 10, and 2 year storm was investigated. Presently, the detention basin intercepts all the runoff from the parking areas and the roof of the building. The basin stores the runoff, metering it off site through an outlet control structure that consists of a catchbasin-type grate feeding into a 1.2--inch reinforced concrete pipe . Flow out of the pipe with the said grate inlet is a maximum of about 3 cubic feet per second (CFS) for all water elevations in the basin that are 0. 2 feet and more over the rim of the grate. As shown on Exhibit C "Pre construc- tion" the design point of the drainage calculations will encom- pass about 5. 6 acres . Before any buildings or structures were erected on site, the 100 year storm generated a peak flow of 21. 2 CFS (designated as subcatchment 1 on the calculations . ) . After the detention basin was installed and the present site was de- veloped, the 100 year storm generated a peak flow off the site of 9 . 4 CFS as calculated by HydroCAD (designated as Reach 1 in the calculations) . Because of its relatively small size, the inclu- sion of the 4000 SF addition does not change the Runoff Curve Number CN from its existing value. of 85 . All other parameters for the site being ;the same, there is no change in the runoff values for the site. The following table is a summary of drain- age calculations (Exhibit C) : CONDITION PEAK STORM FLOW (CFS) 100 YR 10 YR 2 YR PRECONSTRUCTION 21.2 11. 5 4 . 8 (SUBCATCHMENT 1) EXISTING CONDITIONS 9 . 4 6. 5 4 . 2 (REACH 1) PROPOSED CONDITIONS 9 . 4 6. 5 4. 2 (REACH 2) CAB/RE8065-2/cab EXHIBIT +C t 1 1 ; l 1 0 UB A 3 o !! 11 11 , r -- -- GAS C � EXISTING CONDITIONS VB d ti ,�C,1A� •QO PROPOSED CONDITIONS - Data for P1700 WATTS REGULATOR NO. ANDOVER DUP1 Page 1 Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 RydroCAD Release 2.40 (c) 1986, 1990 Applied Microcomputer Systems____ 0 0 0 0 0 0 �o o z �G a o c �n x CDS1JBC�TCHMEIU � POND REA Ci 100 YEAR NORM Data for P1700 WATTS REGULATOR NO. ANDOVER Prepared by PORT ENGINEERING ASSOC. INC. 27 Mar 90 H droCAD Release 2.40 c 1986 1990 A lied Microcomputer Systems SU8CATCHMENT 1 to 6 RUNOFF BY SCS TR-20 METHOD. TYPE Ill 24-HOUR RAINFALL= 7.0 IN SUBCAT AREA LEN SLOPE Tc UGT'D PEAK NUMBER ACRE FT % MIN -- GROUND COVERS %CN --- CN C CFS 1 5.60 - - 12 100%74 - - 74 21.2 2 5.60 - - 12 68%74 327.98 82 - 25.5 3 4.00 - - 9 55%74 45%98 - - 85 - 20.3 4 1.60 - - 10 100%74 - 74 6.4 5 4.00 - - 9 53%74 48798 - 85 20.3 6 1.60 - - 10 100%74 - - - 74 - 6.4 Data for P1700 WATTS REGULATOR NO. ANDOVER Prepared by PORT ENGINEERING ASSOC. INC. 27 Mar 90 HydroCAD Release 2.40 (c) 1986, 1990 Appiied microcomputer Systems REACH 1 to 2 REACH ROUTING BY STOR-IND METHOD REACH BOTTOM SIDE PEAK CONTACT PEAK NO. DIAM WIDTH DEPTH SLOPES n LENGTH SLOPE VEL. TIME QOut 1N FT FT FT FT F7 FT FT (FPS) SEC CFS 1 - - - - 0.0 0 9.4 N 2 - - - - - - 0.0 0 9.4 N f i Data for P1700 WATTS REGULATOR NO. ANDOVER Prepared by PORT ENGINEERING ASSOC, INC. 27 Mar 90 HydroCAD Release 2.40 (c) 1986, 1990 Applied Microcomputer Systems SUBCATCHMENT 6 ACRES CN 1.60 74 SCS TR 20 METHOD TYPE III 24-HOUR AREA= 1.60 AC Tc= 10 MIN RAINFALL= 7.0 IN PEAK= 6.4 CFS is 12.10 HRS VOLUME= .49 AF Data for P1700 WATTS REGULATOR NO. ANDOVER Prepared by PORT ENGINEERING ASSOC. INC. 27 Mar 90 H droCAD Retease 2.40 c 1986 1990 Ap2tied Microcomputer Systems REACH 1 to 2 REACH 1 DEPTH END AREA DISCH Not described (FT) (SO (CFS) SPECIAL 0' CHANNEL - METHOD MAX. DEPTH= 0.00 FT PEAK VELOCITY= 0.0 FPS CONTACT TIME = 0 SEC Qin = 9.4 CFS @ 12.10 HRS Qout= 9.4 CFS 0 12.10 HRS ATTEN= 0 % LAG= 0.0 MIN IN/OUT= 2.03 / 2.03 AF REACH 2 DEPTH END AREA DISCH Not described (FT) (SQ-FT) (CFS) SPECIAL. 0' CHANNEL. METHOD MAX. DEPTH= 0.00 FT PEAK VELOCITY= 0.0 FPS CONTACT TIME = 0 SEC Qin = 9.4 CFS a 12.10 HRS Qout= 9.4 CFS @ 12.10 HRS ATTEN= 0 % LAG= 0.0 MIN IN/OUT= 2.03 / 2.03 AF 1 Data for P1700 WATTS REGULATOR NO. ANDOVER Prepared by PORT ENGINEERING ASSOC. INC. 27 Mar 90 H droCAO Release 2.40 c 1986 1990 Applied Microcomputer Systems POND 1 to 2 POND 1 PRE-1990 STARTING ELEV= 278.3 FT FLOOD ELEV= 282.5 FT ELEVATION CUM.STOR STOR-IND METHOD (FT) (AF) PEAK ELEVATION= 281.5 FT T 278.3 0.00 PEAK STORAGE _ .61 AF 280.0 .30 Qin = 20.3 CFS is 12.09 HRS 282.0 .70 Qout= 3.0 CFS a 11.90 HRS 282.5 1.20 ATTEN= 85 % LAG= 0.0 MIN IN/OUT= 1.55 / 1.54 AF INVERT (FT) OUTLET DEVICES 0.0 CATCHBASIH GRATE ELEV(FT) OISCH(CFS) 278.3 0.0 278.5 2.0 278.8 3.0 282.5 3.0 TOTAL DISCHARGE vs ELEVATION FEET 0.0 .1 .2 .3 .4 .5 .6 .7 .8 .9 278.3 0.0 1.0 2.0 2.3 2.7 3.0 3.0 3.0 3.0 3.0 279.3 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 280.3 f 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 281.3 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 282.3 3.0 3.0 3.0 Data for P1700 WATTS REGULATOR NO. ANDOVER Prepared by PORT ENGINEERING ASSOC. INC. 27 Mar 90 H droCAD Release Z.40 c 1986 1990 A Lied Microcomputer Systems POND 2 POST-1990 STARTING ELEV= 278.3 FT FLOOD ELEV= 282.5 FT ELEVATION CUM.STOR STOR-IND METHOD (FT) (AF) PEAK ELEVATION= 281.5 FT 278.3 0.00T PEAK STORAGE = .61 AF 280.0 .30 Qin = 20.3 CFS a 12.09 HRS 282.0 .70 Qout= 3.0 CFS a 11.90 HRS 282.5 1.20 ATTEN= 85 % LAG= 0.0 MIN IN/OUT= 1.55 / 1.54 AF INVERT (FT) OUTLET DEVICES 0.0 CATCHBASIN GRATE ELEV(FT)_ DISCH(CFSZ 278.3 0.0 278.5 2.0 278.8 3.0 282.5 3.0 TOTAL DISCHARGE vs ELEVATION FEET 0.0 .1 .2 .3 .4 .5 .b .7 .8 .9 278.3 0.0 1.0 2.0 2.3 2.7 3.0 3.0 3.0 3.0 3.0 279.3 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 280.3 ( 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 281.3 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 282.3 3.0 3.0 3.0 S Data for P1700 WATTS REGULATOR NO. ANOOVER Prepared by PORT ENGINEERING ASSOC. INC. 27 Mar 90 HydroCAD Release 2.40 (c) 1986, 1990 Applied Microcomputer Systems SUBCATCHMENT 1 to 6 =-------------------------- a�—cccc�ccc ����- r,�,,,,o SUBCATCHMENT 1 RUNOFF 20 I8 AREA= 5 . 6 AC Tc= 12 MIN 16 CN= 74 14 4- 12 SCS TR-20 METHOD } t0 TYPE III 24—HOUR RAINFALL= 7 . 0 IN 3 8 0 5 PEAK= 21 . 2 CFS 4 @ 12 . 12 HRS 2 VOLUME-= 1 . 75 AF R TIME (hoi.. =.) SUBCATCHMENT 2 RUNOFF 24 22 AREA= 5 . 6 AC 20 T== 12 MIN 18 CN= 82 u 14 SCS TR-2® METHOD 1 2 TYPE I T T 24—HOUR 3 10 RAINFALL= 7 . 0 IN B PEAK= 25 . 5 CF'S 6 @ 12 . 12 HRS 4 VOLUME= 2 . 85 AF _ 2 R TIME C}�ours� SUBCATCHMENT O RUNOFF 20 18 AREA= 4 AC 16 T== 9 MIN CN= 85 14 w 12 SCS TR-20 METHOD 10 TYPE IIT 24—HOUR 0 8 RAINFALL= 7 . 0 IN � 6 PEAK= 20 . 3 CFS 4 @ 12 . 09 HRS 2 VOLUME= 1 . 55 AF em cis rr7 Lc-) t D r, co m m R TIME Chca era Data for P1700 WATTS REGULATOR NO. ANDOVER Prepared by PORT ENGINEERING ASSOC. INC. 27 Mar 90 HydroCAD Re€ease 2.40 (c) 1986, 1990 Apptied Microcomputer Systems SUBCATCHMENT 4 RUNOFF 8 . 0 5 . 5 AREA= 1 . 6 AC 5 . 6 Tc= 10 MIN 4 . S CN= 74 SCS TR-20 METHOD TYPE III 24--HOUR S 0 RAINFALL= 7 . 0 IN 0 2 - 5 2 0 PEAK= 6 -1 CFS 1 5 G 12 . 1 HRS 1 . 0 VOLUME= 49 AF _ 5 r — — c�j R TIME C ho u r s) SUBCATCHMENT 5 RUNOFF 20 1B AREA= 4 AC 1B Tc= 9 MIN 14 CN= 85 12 SCS TR-20 METHOD v 10 TYPE III 24--HOUR 7 8 RAINFALL= 7 . 0 IN -� G PEAK= 20 . 3 CFS 4 G 12 . 09 HRS 2 VOLUME= 1 . 55 AF 0m rn v is L-n r- co m CD R TIME ChoLAr---,3 SUBCATCHMENT 6 RUNOFF 6 . 0 5 5 AREA= 1 . 6 AC 5 0 Tc= 10 MIN 4 5 CN= 74 - : 0 SCS TR-20 METHOD 3 . 0 TYPE III 24-HOUR r 2 5 RAINFALL= 7 , 0 IN u- 2 . 0 PEAK= 6 . 4 CFS 1 . 5 @ 12 . 1 HRS 1 . 0 UOLUME= . 49 AF _ 5 0 0m [V rT3 'r7" E.5 Z.3- r-� co ET r T T r C"i - R TIME 0-iot-4r-s5 Data for P1700 WATTS REGULATOR NO. ANDOVER Prepared by PORT ENGINEERING ASSOC. INC. 27 Mar 90 HydroCAD Release 2.40 �c)_1986, 1990 Applied Microcomputer Systems REACH 1 to 2 REACH 1 INFLOW & OUTFLOW Nod d�acribad ®® SPECIAL 0 ' CHANNEL. . 5 METHOD VELOCITY= 0 FPS CONTACT= O SEC 4 _ Qin= 9 . 4 CFS 4 . C5 Qout= 9 . 4 CFS r LAG= 0 MIN I �1 0@ ct u CE5 €- b� rn rD fl TIME Chours7 REACH 2 INFLOW & OUTFLOW No-E. cl®acr i bad SPECIAL 0 ' CHANNEL 7 i . — METHOD UELOC I TY= 0 FPS CONTACT= O SEC V 4 ' Qin= 9 . 4 CC S C3 Qout= 9 . 11 CFS 2 LAG= 0 MIN 2 0 ICS3 N TIME Chcaurs7 i I i Data for P1700 WATTS REGULATOR NO. ANDOVER Prepared by PORT ENGINEERING ASSOC. INC. 27 Mar 90 HydroCAD Release 2.40 (c) 1986, 1990 Applied Microcomputer Systems POND 1 to 2 =----===-======- _ _ _ __ ----------- ---- POND I INFLOW & OUTFLOW PRE- 1350 20 18 STOR--IND METHOD 16 PEAK ELEU= 291 . 5 rT 14 PEAK STOR= 61 AF U') 12 Qin= 20 . 3 CF5 U 1 e Qout= 3 . 0 CFS LAG= 0 MIN d 8 u._ 4 ac co m m R TIME CI-iour-�,D POND 2 INFLOW & OUTFLOW POST- 1990 20 1 8 STOR--IND METHOD t6 PEAK ELEU= 291 . 5 FT PEAK STOR= . 61 AF i9 cam.. 12 Q i n= 20 . 3 C F 5 u le Qout= 3 . 8 CFS LAG-= 0 MIN CD J 6 la... 4 2 csj CV R TIME Chour-sD 10 YEAR STORM Data for P1700 WATTS REGULATOR NO. ANDOVER DUP1 Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 H droCAD Release 2.40 c 1986 1990 Apptied Microcomputer Systems SUBCATCHMENT 1 to 6 =---------- ----------------------------------------------- RUNOFF BY SCS TR-20 METHOD: TYPE III 24-HOUR RAINFALL= 4.8 IN SUBCAT AREA LEN SLOPE Tc WGT'D PEAK NUMBER ACRE FT % MIN --- GROUND COVERS %CN --- CN C CFS 1 5.60 12 100%74 - 74 11.5 2 5.60 - - 12 68%74 32%98 - 82 15.2 3 4.00 - - 9 55%74 45%98 - 85 12.6 4 1.60 - 10 100%74 - - 74 3.5 5 4.00 - - 9 53%74 48798 - 85 12.6 6 1.60 - - 10 100%74 - - 74 - 3.5 Data for P1700 WATTS REGULATOR NO. ANDOVER DUPE Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 HydroCAD Release 2.40 (c) 1986, 1990 Applied Microcomputer Systems REACH 1 to 2 REACH ROUTING BY STOR-IND METHOD REACH BOTTOM SIDE PEAK CONTACT PEAK NO. DIAM WIDTH DEPTH SLOPES n LENGTH SLOPE VEL. TIME Qout (IN) (FT) (FT) (FT/FT) (FT) (FT/FT) (FPS) (SEC) (CFS)_ 1 - - - 0.0 0 6.5 N 2 - - - - - 0.0 0 6.5 N Data for P1700 WATTS REGULATOR NO. ANDOVER DUP1 Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 N droCAD Release 2.40 c 1986 1990 Applied Microcomputer Systems POND 1 to 2 POND ROUTING 8Y STOR-1ND METHOD POND OUTLET SPECIAL START FLOOD PEAK PEAK Qpeak Qpeak Qpeak NO. DEVICES OUTLETS ELEV. ELEV. ELEV. STORAGE ATTEN. LAG OUT FT FT FT AF % MIN CFS 1 - 1 278.3 282.5 280.0 .30 76 0.0 3.0 2 1 278.3 282.5 280.0 ,30 76 0.0 3.0 Data for P1700 WATTS REGULATOR NO. ANDOVER DUP1 Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 HydroCAD Release 2. �c) 1„986,, 1990 Applied Microcomputer Systems ,40 SUBCATCHMENT 1 to 4 SUBCATCHMENT 1 ACRES CN 5.60 74 SCS TR-20 METHOD TYPE III 24-HOUR AREA= 5.60 AC Tc= 12 MIN RAINFALL= 4.8 IN PEAK= 11.5 CFS a 12.13 HRS VOLUME= .95 AF SUBCATCHMENT 2 ACRES CN 3.80 74 SCS TR-20 METHOD 1.80 98 TYPE III 24-HOUR 5.60 82 RAINFALL= 4.8 IN AREA= 5.60 AC Tc= 12 MIN PEAK= 15.2 CFS a 12.12 HRS VOLUME= 1.23 AF SUBCATCHMENT 3 ACRES CN 2.20 74 SCS TR-20 METHOD 1.80 98 TYPE III 24-HOUR 4.00 85 RAINFALL= 4.8 IN AREA= 4.00 AC Tc= 9 MIN PEAK= 12.6 CFS a 12.09 HRS VOLUME= .96 AF SUBCATCHMENT 4 ACRES CN 1.60 74 SCS TR-20 METHOD TYPE III 24-HOUR AREA= 1.60 AC To= 10 MIN RAINFALL= 4.8 IN PEAK= 3.5 CFS i 12.11 HRS VOLUME= .27 AF SUBCATCHMENT 5 ACRES CN 2.10 74 SCS TR-20 METHOD 1.90 98 TYPE III 24-HOUR 4.00 85 RAINFALL= 4.8 IN AREA= 4.00 AC To= 9 MIN PEAK= 12.6 CFS @ 12.09 HRS VOLUME= .96 AF Data for P1700 WATTS REGULATOR NO. ANDOVER DUP1 Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 HydroCAD Release 2.40 (c) 1986, 1990 Applied Microcomputer Systems SUBCATCHMENT 6 ACRES CN 1.60 74 SCS TR-20 METHOD TYPE III 24 HOUR AREA= 1.60 AC Tc= 10 MIN RAINFALL= 4.8 IN PEAK= 3.5 CFS @ 12.11 HRS VOLUME= .27 AF Data for P1700 WATTS REGULATOR NO. ANDOVER DUP1 Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 HydroCAD Release 2.40 (c) 1986, 1990 Applied Microcomputer Systems REACH1 to 2 =----- ----------------------------------------------------------- REACH I DEPTH END AREA DISCH Not described FT) (SQ-FT) (CFS SPECIAL 0' CHANNEL METHOD MAX. DEPTH= 0.00 FT PEAK VELOCITY= 0.0 FPS CONTACT TIME = 0 SEC Qin = 6.5 CFS @ 12.11 HRS Qout= 6.5 CFS @ 12.11 HRS ATTEN= 0 % LAG= 0.0 MIN IN/OUT= 1.22 / 1.22 AF REACH 2 DEPTH END AREA DISCH Not described (FT) (SO-FT) (CFS) SPECIAL 01 CHANNEL - METHOD MAX. DEPTH= 0.00 FT PEAK VELOCITY= 0.0 FPS CONTACT TIME = 0 SEC Qin = 6.5 CFS @ 12.11 HRS Qout= 6.5 CFS @ 12.11 HRS ATTEN= 0 % LAG= 0.0 MIN IN/OUT= 1.22 / 1.22 AF Data for P1700 WATTS REGULATOR NO. ANDOVER DUP1 Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 H droCAD Release 2.40 c 1986 1990 Apptied..Microcomputer Systems POND 1 to 2 POND 1 PRE-1990 STARTING ELEV= 278.3 FT FLOOD ELEV- 282.5 FT ELEVATION CUM.STOR STOR-IND METHOD (FT) (AF) PEAK ELEVATION= 280.0 FT 278.3 0.00 PEAK STORAGE _ .30 AF 280.0 .30 Qin = 12.6 CFS a 12.09 HRS 282.0 .70 Qout= 3.0 CFS a 12.00 HRS 282.5 1.20 ATTEN= 76 % LAG= 0.0 MIN IN/OUT- .96 / .95 AF INVERT (FT) OUTLET DEVICES 0.0 CATCHBASIN GRATE ELEV(FT) DISCH(CFS) 278.3 0.0 278.5 2.0 278.8 3.0 282.5 3.0 TOTAL DISCHARGE vs ELEVATION FEET 0.0 .1 .2 .3 .4 5 .6 .7 .8 .9 278.3 0.0 1.0 2.0 2.3 2.7 3.0 3.0 3.0 3.0 3.0 279.3 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 280.3 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 281.3 [ 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 282.3 3.0 3.0 3.0 I i i Data for P1700 WATTS REGULATOR NO. ANDOVER DUP1 Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 HydroCAD Re€ease 2.40 (c) 1986, 1990 Applied Microcomputer Systems POND 2 POST-1990 STARTING ELEV= 278.3 FT FLOOD ELEV= 282.5 FT ELEVATION CUM.STOR STOR-IND METHOD (FT) (AF) PEAK ELEVATION= 280.0 FT 278.3 0.00 PEAK STORAGE _ .30 AF 280.0 .30 Qin = 12.6 CFS @ 12.09 HRS 282.0 .70 Qout= 3.0 CFS a 12.00 HRS 282.5 1.20 ATTEN= 76 % LAGS 0.0 MIN IN/OUT= .96 / .95 AF INVERT (FT) OUTLET DEVICES 0.0 CATCHBASIN GRATE ELEV(FT) DISCH(CFS) 278.3 0.0 278.5 2.0 278.8 3.0 282.5 3.0 TOTAL DISCHARGE vs ELEVATION FEET 0.0 .1 .2 .3 .4 .5 .6 .7 .8 >9 278.3 0.0 1.0 2.0 2.3 2.7 3.0 3.0 3.0 3.0 3.0 279.3 J 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 280.3 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 281.3 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 282.3 3.0 3.0 3.0 Data for P1700 WATTS REGULATOR NO. ANDOVER DUPI Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 HydroCAD Release 2.40 (c) 1986, 1990 Applied Microcomputer Systems SUBCATCHMENT I to 6 =�_- - ------------- -_ SUBCATCHMENT I RUNOFF 11 10 AREA= 5 . 6 AC g T== 12 MIN e CN= 74 � 7 SCS TR-20 METHOD TYPE III 24-HOUR 5 R A TNIFK:4L_L= 4 . 8 IN c� 4 LJ� 3 PEAK-= I 1 . 5 CFS 2 @ 12 . 13 HRS VOLUME= 95 OF 1 Ln Co r- - R TIME Chqur—sD SUBCATCHMENT 2 RUNOFF 15 1G1 AREA= 5 . 6 AC 13 12 T== 12 MIN 11 CN= 82 10 � 9 SCS TR--20 METHOD B TYPE III 24-HOUR 6 RAINFALL= 4 . 8 IN 4 PEAK= 15 . 2 CFS 3 @ 12 . 12 HRS 2 VOLUME= 1 . 23 AF _ 1 am cv rn v u �n r� co m m R TIME (lncn" ? SUBCATCHMENT 3 RUNOFF 12 i1 AREA= 4 AC 10 Tc= 9 MIN CN= 85 7 SCS TR-20 METHOD 6 TYPE III 24-HOUR 3 5 RAINFALL= 4 . 8 IN CD 4 PEAK= 12 . 6 CFS 3 @ 12 . 09 HRS 2 VOLUME= . 96 AF" L) am — ru i45 v Ln � r- co m m R ` TIME CI- cur �7 Data for P1700 WATTS REGULATOR NO. ANDOVER DUP1 Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 11 droCAD Release 2.40 _(cl 1986 1990 Applied Microcomputer Systems SUBCATCHMENT 4 RUNOFF S 2 AREA.= 1 . 6 AC 2 . 8 Tc= 10 MIN 2 . 6 CN= 74 2 . 4 2 . 2 2 . 0 SCS TR--20 METHOD ; 6 TYPE III 24—HOUR 3 1 . 4 RAINFALL= 4 . 8 IN 0 1 . 2 Ls_.u 1 0 PEAK= 3 . 5 CFS 6 @ 12 . 11 HRS q VOLUME= . 27 AF 2 R TIME Chaurs7 SUBCATCHMENT 5 RUNOFF 12 11 L- AREA= 4 AC 1 � T== 9 MIN g CN= 85 u 7 SCS TR-28 METHOD L 6 TYPE III 24---HOUR 5 RAINFALL= 4 . 8 IN CD u 4 PEAK= 12 . 6 CFS 3 @ 12 . 09 HRS 2 VOLUME= . 96 AF _ 1 CS3 cV r+� W n- CC3 cT m T r T r 22 r N R TIME Chcaurs7 SUBCATCHMENT 6 RUNOFF 2 4 3 . 0 AREA= 1 . 5 AC 2 . B Ta= 10 MIN 2 ; 64 CN= 74 - 2 . 6 SCS TR-20 METHOD 1 TYPE I I I 24—f SOUR 1 q RAINFALL= 4 . 8 IN CD 1 . 2 U-.. 1 S PEAK= 3 . 5 CF5 6 @ 12 . 11 HRS q VOLUME= 27 AF . 2 0) , 0M C.j in rt a s o, m R TIME Ch©urs7 Data for P1700 WATTS REGULATOR 110. ANDOVER DUP1 Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 HydroCAD Release 2.40 (c) 1986, 1990 Applied Microcomputer Systems REACH1 to 2 =---------------------------------------------- -�_��__�_�������w REACH 1 INFLOW & OUTFLOW 6 5Not da�cr i io®c1 6 . 0 SPECIAL 0 ' CHANNEL 5 . 5 5 . 0 — METHOD 4 . 5 VELOCITY= 0 FPS 3 : CONTACT= 0 SEC 3 B Qin= 6 . 5 CFS 0 2 . 5 Qnut= 6 . 5 CFS 2 . L..AG= 0 MIN 1 5 1 Cd _ 0 Om as o R TIME Chour �] REACH 2 INFLOW 8. OUTFLOW 6 5 Not al =-=r i lead 5 ' 0 SPECIAL 0 ' CHANNEL 5 . 5 5 . 0 — METHOD 4 5 UELOC I TY= 0 FPS CONTACT= 0 SEC a . @ Qin= 6 . 5 CFS CDz . 5 Qout= 6 . 5 CFS 2 . 2) LAG= O MIN 1 . 5 i . 0 0 Om cv r7 v 4n �n r• oo rn m it TIME Cl�ours] Data for P1700 WATTS REGULATOR NO. ANDOVER DUP1 Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 H droCAD Release 2.40 c 1986 1990 Applied Microcomputer S stems POND 1 to 2 POND 1 INFLOW & OUTFLOW PRE— 1990 1 2 11 STOR—IND METHOD 10 PEAK ELEU= 200 FT 9 BEAK STOR= . 30 AF 0im= 12 . 6 CF5 Qaut= 3 . 0 CFS 6 5 LAG= 0 MIN C 0 � 4 2 (30 m m R TIME 0-)our-_-s7 POND 2 INFLOW & OUTFLOW f'C1ST— 1 990 12 11 STOR—IND METHOD 10 PEAK ELEU= 290 FT D PEAK STOR= . 30 AF L4- Q i r�- 1 2 , 6 CFS '' Qout= 3 . 0 CFS v � Z 5 LAG= H MIN 0 � 4 u✓ 3 2 Bm ru m v Ein Cn r, ao m m _.... ..... _.... _ � � u... .�. .._. ..... car R TIME ChrDur-s7 O H N Q W ............. ...... ........... ................ ........... ... .......... ... ........ Data for P1700 WATTS REGULATOR NO. ANDOVER DUP2 Prepared 6y PORT ENGINEERING ASSOC. INC. 28 Mar 90 H droCAD Release 2.40 c 1986 1990 Apptied Microcomputer Systems SUBCATCHMENT 1 to 6 RUNOFF BY SCS TR-20 METHOD: TYPE III 24-HOUR RAINFALL= 3.1 IN SUBCAT AREA LEN SLOPE Tc WGT'D PEAK NUMBER ACRE FT % MIN --- GROUND COVERS %CN --- CN C CFS 1 5.60 - - 12 100%74 - - 74 - 4.8 2 5.60 - 12 68%74 32%98 - 82 7.6 3 4.00 9 55%74 45%98 - 85 - 6.7 4 1.60 - 10 100%74 - - - 74 1.4 5 4.00 - 9 53%74 48798 - 85 - 6.7 6 1.60 - 10 100%74 - - - 74 - 1.4 Data for P1700 WATTS REGULATOR NO. ANDOVER DUP2 Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 H droCAD Re{ease 2.40 c 1986 1990 Applied Microcomputer Systems REACH 1 to 2 REACH ROUTING BY STOR-IND METHOD REACH BOTTOM SIDE PEAK CONTACT PEAK NO. DIAM WIDTH DEPTH SLOPES n LENGTH SLOPE VEL. TIME Qout IN F7 FT (FT/FT)- FT FT FT FPS SEC CFS 1 - - - - - 0.0 0 4.2 N 2 - - - 0.0 0 4.2 N I Data for P1700 WATTS REGULATOR NO. ANDOVER DUP2 Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 HydroCAO Release 2.40 (c) 1986, 1990 Apptied Microcomputer Systems POND 1 to 2 =-============--------------------------------------------------- POND ROUTING BY STOR-IND METHOD POND OUTLET SPECIAL START FLOOD PEAK PEAK Qpeak Opeak Qpeak NO. DEVICES OUTLETS ELEV. ELEV. ELEV. STORAGE ATTEN. LAG OUT FT FT FT AF % MIN CFS 1 - 1 278.3 282.5 278.9 .11 55 6.3 3.0 2 - 1 278.3 282.5 278.9 .11 55 6.3 3.0 Data for P1700 WATTS REGULATOR NO. ANDOVER DUP2 Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 HydroCAD Retease 2.40 (c) 1986, 1990 Applied Microcomputer Systems SUBCATCHMENT 1 to 6 =-------------------------- ------------a=c=c=====_______ SUBCATCHMENT 1 ACRES CN 5.60 74 SCS TR-20 METHOD TYPE III 24-HOUR AREA= 5.60 AC Tc= 12 MIN RAINFALL= 3.1 IN PEAK= 4.8 CFS a 12.14 HRS VOLUME= .41 AF SUBCATCHMENT 2 ACRES CN 3.80 74 SCS TR-20 METHOD 1.80 98 TYPE III 24-HOUR 5.60 82 RAINFALL= 3.1 IN AREA= 5.60 AC Tc= 12 MIN PEAK= 7.6 CFS a 12.13 HRS VOLUME= .63 AF SUBCATCHMENT 3 ACRES CN 2.20 74 SCS TR-20 METHOD 1.80 98 TYPE III 24-HOUR 4.00 85 RAINFALL= 3.1 IN AREA= 4.00 AC Tc= 9 MIN PEAK= 6.7 CFS a 12.10 HRS VOLUME= .51 AF SUBCATCHMENT 4 ACRES CN r -a 1.60 74 SCS TR-20 METHOD TYPE III 24-HOUR AREA= 1.60 AC Tc= 10 MIN RAINFALL= 3.1 IN PEAK= 1.4 CFS @ 12.12 HRS VOLUME= .12 AF SUBCATCHMENT 5 ACRES CN 2.10 74 SCS TR-20 METHOD 1.90 98 TYPE III 24-HOUR 4.00 85 RAINFALL= 3.1 IN AREA= 4.00 AC Tc= 9 MIN PEAK= 6.7 CFS :1 12.10 HRS VOLUME= .51 AF Data for P1700 WATTS REGULATOR NO_ ANDOVER DUP2 Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 HydroCAD Release 2.40 (c) 1986, 1990 Applied Microcomputer Systems SUBCATCHMENT 6 ACRES CN 1.60 74 SCS TR-20 METHOD TYPE III 24-HOUR AREA= 1.60 AC Tc= 10 MIN RAINFALL= 3.1 IN PEAK= 1.4 CFS a 12.12 HRS VOLUME= .12 AF Data for P1700 WATTS REGULATOR NO. ANDOVER DUP2 Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 H droCAD Release 2.40 c 1986 1990 Applied Microcomputer Systems REACH 1 to 2 REACH 1 DEPTH END AREA DISCH Not described (FT) (SO-FT) (C_ SPECIAL 0' CHANNEL - METHOD MAX. DEPTH= 0.00 FT PEAK VELOCITY= 0.0 FPS CONTACT TIME = 0 SEC Qin = 4.2 CFS a 12.16 HRS Qout= 4.2 CFS @ 12.16 HRS ATTEN= 0 % LAG= 0.0 MIN IN/OUT= .63 / .63 AF REACH 2 DEPTH END AREA DISCH Not described (FT) (SQ-FT) (CFS) SPECIAL 0' CHANNEL METHOD MAX. DEPTH= 0.00 FT PEAK VELOCITY= 0.0 FPS CONTACT TIME = 0 SEC Qin = 4.2 CFS a 12.16 HRS Qout= 4.2 CFS a 12.16 HRS ATTEN= 0 % LAG= 0.0 MIN IN/OUT= .63 / .63 AF Data for P1700 WATTS REGULATOR NO. ANDOVER DUP2 Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 HydroCAD Retease 2.40 (c) 1986, 1990 Applied Microcomputer Systems POND 1 to 2 POND 1 PRE-1990 STARTING ELEV= 278.3 FT FLOOD ELEV= 282.5 FT ELEVATION CUM.STOR STOR-IND METHOD (FT) (AF) PEAK ELEVATION= 278.9 FT 278.3 0.00 PEAK STORAGE _ .11 AF 280.0 .30 Oin = 6.7 CFS @ 12.10 HRS 282.0 .70 Qout= 3.0 CFS @ 12.20 HRS 282.5 1.20 ATTEN= 55 % LAG= 6.3 MIN IN/OUT= .51 / .51 AF INVERT FT OUTLET DEVICES 0.0 CATCHBASIN GRATE ELEV(FT) DISCH(CFS) 278.3 0.0 278.5 2.0 278.8 3.0 282.5 3.0 TOTAL DISCHARGE vs ELEVATION FEET 0.0 .1 .2 .3 .4 .5 .6 .7 .8 .9 278.3 ( 0.0 1.0 2.0 2.3 2.7 3.0 3.0 3.0 3.0 3.0 279.3 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 280.3 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 281.3 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 282.3 3.0 3.0 3.0 Data for P1700 WAITS REGULATOR NO. ANDOVER DUP2 Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 H droCAD Release 2.40 c 1986 1990 Apptied Microcomputer Systems POND 2 POST-1990 STARTING ELEV= 278.3 FT FLOOD ELEV= 282.5 FT ELEVATION CUM.STOR STOR-IND METHOD (FT) (AF) PEAK ELEVATION= 278.9 FT 278.3 0.00� PEAK STORAGE = .11 AF 280.0 .30 0in = 6.7 CFS 3 12.10 HRS 282.0 .70 Qout= 3.0 CFS 8 12.20 HRS 282.5 1.20 ATTEN= 55 % LAG= 6.3 MIN IN/OUT= .51 / .51 AF INVERT (FT) OUTLET DEVICES 0.0 CATCHBASIN GRATE ELEV(FT2 DISCH CFS 278.3 0.0 278.5 2.0 278.8 3.0 282.5 3.0 TOTAL DISCHARGE vs ELEVATION FEET 0.0 .1 .2 .3 .4 .5 .6 .7 .8 .9 278.3 0.0 1.0 2.0 2.3 2.7 3.0 3.0 3.0 3.0 3.0 279.3 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 280.3 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 281.3 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 282.3 3.0 3.0 3.0 Data for P1700 WATTS REGULATOR NO. ANDOVER DUP2 Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 H droCAD Release 2.40 c 1986 1990 Applied Microcomputer Systems SUBCATCHMENT 1 to b SUBCATCHMENT k RUNOFF 4 . 5 4 . 0 AREA= 5 . 5 PC To= 12 MIN 3 . 5 CN= 74 3 . 0 SCS TR-20 METHOD 2 5 TYPE III 24-HOUR 2 . 0 RAINFALL= 3 . 1 IN o i5 PEAK= 4 . B CF5 V- 1 . B @ 12 . 14 HRS 5 VOLUME= . 41 AF Om cv r1l -cs- cn Zo r 3 en m TIME Cl�aur�7 SUBCATCHMENT 2 RUNOFF 7 . 5 7 6 5 AREA= 5 , 6 AC . 6 . {D T== 12 MIN 5 . 5 CN= 82 5 . 0 4 . 5 SCS TR-20 METHOD 4 . 0 TYPE III 24-HOUR 3 . 5 RAINFALL= 3 . I IN 0 3 . 0 2 , 0 PEAK-= 7 . 6 CFS 1 S 8 12 . 13 HRS 1 . 0 VOLUME= . 63 AF R TIME Chaur-sD SUBCATCHMENT 3 RUNOFF 6 . 5 6 . 0 AREA= 4 AC 5 . 5 Tc= 9 MIN 5 . 0 CN= 85 4 . 5 4 . 0 SCS TR-20 METHOD 3 . 5 TYPE III 24-HOUR RAINFALL= 3 . k IN a 2 . 5 ii 2 . 0 PEAK= 6 . 7 CFS 1 . 5 e 12 . 1 HR5 1 . 0 VOLUME= . 51 AF 0 0m .� ru m v- r.n k.ra r� m cn Ma R TIME Chour-s7 Data for P1700 WATTS REGULATOR NO. ANDOVER DUP2 Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 HydroCAD Release 2.40 (c) 1986, 1990 Applied Microcomputer Systems__ SUBCATCHMENT 4 RUNOFF 4 . 4 1 3 PREP= 1 . 5 AC 1 . 2 Tc= 10 MIN 1 . 1 C N= 74 1 � F _ 8 SCS TR-20 METHOD U 7 TYPE III 24-HOUR 5 RAINFALL= 3 . 1 IN 0 5 � 4 PER1G= 1 . 4 CF5 G 1 2 . 1 2 H R S 2 UOLUME= . 1 2 AF _ 1 0m - cv r r n 00 rn m R TIME CkmL.r-s7 SUBCATCHMENT 5 RUNOFF 6 . 5 6 . 0 AREA- 4 AC 5 . 5 T== 9 MIN 5 . 0 CN= S5 4 . 0 SCS TR-20 METHOD u 3 . 5 TYPE III 24-HOUR 3 3 . 2 RAINFALL= 3 . 1 IN m 2 . 5 -J 2 . 0 PEAK= 6 . 7 CFS 1 . 5 e 12 . 1 HRS 1 . 0 UOLUME= . 51 AF _ . 5 0 . 0 cu v o r m ae CD TIME Chour-s) SUBCfRTCHMENT 6 RUNOFF 3 . 4 I . 3 AREA= 1 . 5 AC 1 . 2 Tc= 10 MIN 11 CN= 74 La SC5 TR-20 METHOD TYPE III 24-HOUR 6 RAINFALL= 3 . 1 IN CD . 5 tJc q PEAK.= 1 . 4 CFS @ 12 . 12 HRS . 2 VOLUME= . 12 AF 1 t o r-- co rn m H TIME Ci-tour-sa Data for P1700 WATTS REGULATOR NO. ANDOVER DUP2 Prepared by PORT ENGINEERING ASSOC. INC. 28 14ar 90 HydroCAD Release 2.40 (c) 1986, 1990 Applied Microcomputer Systems REACH 1 to 2 REACH I INFLOW & OUTFLOW Not desscr ; bad 4 . 0 SPECIAL. 0 CHANNEL 3 . S 3 . 0 - METHOD VELCICITY= 0 FPS L4 2 . 5 CONTACT= 0 SEC U 2 ' 0 Qin= 4 . 2 CFS cD 1 . 5 Clout= 4 . 2 CFS � ' 0 LAG= 0 MI1\I . a R TIME ChoLA -B- REACH 2 INFLOW & OUTFLOW Not decor^ i b,---c: 4 . 0 SPECIAL 0 ' CHANNEL 3 . 5 3 0 - METHOD VELOCITY= 0 FPS 4 2 . 5 CONTACT.= 0 SEC u 2 . 0 0in= 4 . 2 CFS 0 15 Qout= 4 . 2 CFS -- LAG= 0 MLL- IN 1 0 5 R TIME CI,r=L-+r-�] Data for P1700 WATTS REGULATOR NO. ANDOVER DUP2 Prepared by PORT ENGINEERING ASSOC. INC. 28 Mar 90 HydroCAD Retease 2.40 (c) 1986, 1990 Applied Microcomputer Systems POND1 to 2 =--------------------------------�___cam====____-_________________- POND I INFLOW & OUTFLOW PRE— 1990 15 5 6 . 0 STDR—IND METHOD 5 . 5 PEAK ELEU= 27€3 . 9 FT 5 . 0 PEAK STOR= . 11 AF -� 45 4 0 Q i n= 6 . 7 CFS u 3 . 5 Qout= 3 . 3 CFS 3 . a LAG= 6 . 3 MIN CD 2 . 5 --J 2 . 8 15 1 . 5 { r,. co to m ..... ....,. ...... .� — — .�.. r N R TIME C{�our3 POND 2 INFLOW & OUTFLOW POST- 1590 6 . 5 6 . 0 STOR—IND METHOD 5 . 5 PEAK ELEU.= 278 . 9 FT 5 - 0 PEAK STUR= . 11 AF 4 . 5 4 . 0 Qin= 6 . 7 CFS u 3 . 5 Qout= 3 . 0 CFS v 3 . 0 LAG= 6 . 3 MIN D Z 5 1 `. -� 2 . 0 { 1 . 5 1 . 0 1 _ 5 r R TIME Choura7