Loading...
HomeMy WebLinkAbout1986-07-21 Stormwater Report Richard F. Kaminski & Associates, Inc. DRAINAGE CALCULATIONS FOR FORBES REALTY TRUST ROUTE 114 & PETERS STREET NORTH ANDOVER, MASS Architects ❑ Engineers ❑ Surveyors ❑ Land Planners -1483 200 Sutton St., North Andover, MA 01845, (617) 687 RICHARD F. KAMINSKI & ASSOCIATES, INC. u ARCHITECT'S ENGINEERS SURVEYORS LAND PLANNERS JOB Na. ----------- SHEET /-OF_-Z-- -------....-- CALC. �� ���--- DATE SUBJECT -- ffllJfrC - 1 C' E���J''f l�? --------- CHKD._ / i/J�.----- DATE -4. %9�L{i �1 rVr.�; ' CC��T:i[iG1lL C• C 3a G- Ate} t . -)o�, 15 /J [.goo w �• c2'.7 �, Es Tire tl r�� J�Uf✓o v� � (��`s� 42(4,9�)7 1 /0 cfs PROPOSED CONDITIONS 7-%LC `IAT1CNS FM RUNOFF DETEFZ'IBIATICN Forbes Realty Trust C'CMP BY I.W.P. DATE 8/29/86 SHEET I _ OF . 1 DESICti STM1,1 Fn-7-1 pi 25 YEAR rT=UtNCY LOCATiCN Cabot Village CEECKED BY P.A.R. DATE 9/2/86 ou Reach Tnrou F'lcul.ine [Towline A C CA 'ZCA C 2 Q Pipe Size full o n L Fla. Locaszon Elevation Location Elevation. ;lcres Acres Aerss Mins. in/hr. C.f.s. n= .013 C.f.s. feet/foot ft.sec. feet mans. CBd�I 186.18 CB#2 186.11 .55 .51 .28 5.0 S r c p U 3.2 15 CB#2 186.11 DMH#2A 185.31 .17 .90 .15 .43 5.0 6.5 2.80 12 rcp 3.0 UU 1 DMH#2A 185.31 CB#3 184.73 - - _ _ rcp 73 C8#3 184.73 Flared End 184.01 .16 .30 05 48 0 6.5 3 2 1 " c 2 D 4 DETENTIO POND 411 . .64 .37 .24 .72 5.0 6 4 68 CB#4 181.25 CB#5 181.14 .97 .85 .82 - 5.0 6.5 5.33 15"rc CB# __1$0.89 DMH#5A 179.47 1.08 .90 .97 1.79 5.0 6.5 11.63 .18"rc 12.0 D $ I18 DMH# A - 179.47 Flared End 119.27 - - - - - - 11.63 18"rc 12.D 012 6.8 17 CB � 179.2o CB#6 179.06 .09 .90 .08 - 5.0 6.5 .52 12"rc 2.6 OOS 2.6 27 179.06 Flared End 178.98 .14 .90 .12 .20 5.0 6.5 1.36 12"rc 2.6 .005 3.3 15 DETENTIO POND #2 .70 .56 .39' 2.38 5.0 6.5 15.47 Ell ........................................................ ........_..................................... RICHARD F. KAMINSKI & ASSOCIATES, INC. ARCHITECTS • ENGINEERS SURVEYORS LAND PLANNERS -T JOB NO. ____-.,..-__-- SHEET-!--OF__�� f I _ Fvler r7 ! t~�` Y Uyr ---- CALC. '_ -_ DATE PROJECT-------------}�-�--- t --- - -- -------- - SUBJECT--- I� r�# lIV��---G�sw_C(��iaT�Q.v�--- CHKD. �� _�-- DATE CA ,Z2 4- U t` IS•� o a 1 2b a RICHARD F. KAMINSKI & ASSOCIATES, INC. ARCHITECTS • ENGINEERS SURVEYORS • LAND PLANNERS �i JOB TKO. _.,..._.,,,_______ SHEET_—OF,.,._�� PROJECT— � RC��''�ti__!i r� -f u / �J ._'�_--- CALC._ L� . av�J.=J—__ DATE SUBJECT ____s I• f :. �—�_GL�� �T�aJ�(i _ CHKD.........E =�, --- DATE 0 1 , c�s0 %76G 19C.00 7000 z3�moo© ESS � 19,` RICHARD F. KAMINSKI & ASSOCIATES, INC. ARCHITECTS • ENGINEERS SURVEYORS LAND PLANNERS —T JOB NO. ......-.--------- SHEET_ 3—...OF Lt-- PROJECT__ —_...._-- CALC.—;- W, --- DATE SUBJECT--_ I��J���,_ CHKD._-Zf/---R— ---- DATA CMG'%fGU6�J Crt:�f-l�/7``� 12 �� Q G , Gc1/o /y rll�Gclf1 LL ,eE-L E VA T,on/ S.- /8¢. UO O Q I6E cc z. a /69.00 4=, a �. R.0 /�10. G /p. v /90 Igo z.o io.v Q �QS) RICHARD F. KAMINSKI & ASSOCIATES, INC. ARCHITECTS • ENGINEERS • SURVEYORS LAND PLANNERS JOB NO. ____.,.,.._-__-- SHEET_-4--_OF-_�� PROJECT_-- CALL.__=Z %�• _ DATE SUBJECT-_ __- f1Z201 DATE + O 6-1 4I�a C .7 .0 86.9 �00 /O.o /6 75 0 Q 4 z 0 C, ZO 40 60 RICHARD F. KAMINSKI & ASSOCIATES, INC. ARCHITECTS • ENGINEERS • SURVEYORS • LAND PLANNERS JOB NO.-_r-�_....._.--__-- SHEET___ OF_ PROJECT----- v` = - " / ! --'/�vJ --- CALL._ ._ I_ __ DATE SUBJECT-----DRAiNf'�-" '-- Gf� �CLL!/�T/G'/LI� --- CHKD._P+ ___ DATE / //?I� .J.. /C..'f'.�a c1 LJ /''1� :"�f [�✓'TAG Cy-�-r� 7= '7. } elf ? �, 7lo 12--2 74 .2162- .3.24 7,3S i47.�15 ?.80 /7.S �. 6z. f�.3Z 3.0 .Zo.o 0 a2�•5 d RICHARD F. KAMINSKI & ASSOCIATES, INC. ARCHITECTS • ENGINEERS SURVEYORS LAND PLANNERS C JOB NO. ________-...._ SWEET_C(J._.-OF-L�- PROIECT__ CALC. „_-t+i/ -T?-- DATE SUBJECT---- �?1111-✓ 'r` -_ � 'L.�>_'' _'f'_u _ CWKD. f� __ DATE 4.5 G? /a. 7i l� lo.7f PRvpo5=17 RcJrJvFF- 7 aaTfcv'-" /avZ:> iG- Zo � � n Q G 5 o (o./f 42.EG 13,33 13,51 /91`l 15.41 RICHARD F. KAMINSKI & ASSOCIATES, INC. ARCHITECTS - ENGINEERS SURVEYORS • LAND PLANNERS 7 J d C3 NO- ------•----- SHEET_!_._O F_I �- PROJECT-_/l ----- - - f y--!--- %---�---- �_W.if _ DATE SUBJECT----�1 h/fle%=--�/� �' ! 4%��/J ---------- C H K D. E- .'?.---- DATE _--��----- �LP/flTio�cJ /- <Il/� .;a,�', Vim!✓`uC /76 , no /, /40 0 1,4 IU 170. coo 2_ 8Z0 /80• co 3f44-0 794o 4- �za �,000 f6J 3'60 liv 1'7�4 W, 4 176. 00 0 0 O /78.00 o � l82 , as (. o RICHARD F. KAMINSKI & ASSOCIATES, INC. ARCHITECTS • ENGINEERS SURVEYORS LAND PLANNERS JOB NO.- ----------- S1-iEET__---OCF�._.LL PROJECT-----t DATE SUBJECT-.____��1L�/��:yam_--G' (./ I_IZL1 LC, (5-__CFIKD.._- ----- -_ DATE �710. OO c� Ci U 2, 41 Z 23. 3 Q � �f 2 o f Ar v 20 4o 6�0 00 tom' 12.0 RICHARD F. KAMINSKI & ASSOCIATES, INC. ARCHITECTS • ENGINEERS ' SURVEYORS - LAND PLANNERS 9 �1 �^ JOB NO. ____._......._--- SHEET„.!,...,,,,.—OF— PROJECT--- Q—�S--�ES_— � LTl //��s� —_— CALC. ��r _ DATE Sl3BJECT---� �� �� —�ALCC�G!�T/r�/IJ ----"--- CHKD._—�/�.�L DATE 1 �2-1. 7S 1�. 2 CZ7, /0 /O.o I3. 7/ /S,o /13 .91 63.g5' S S77 �, 1 77. 9 r l7, 5 RICHARD F. KAMINSKI & ASSOCIATES, INC. ARCHITECTS ENGINEERS SURVEYORS , LAND PLANNERS /0 JOB NO. ----`-f,.,„.,._.._-- Si-iEET___._..,".OFr_�-'/r_ DATE SUBJECTLCI1 t7 !!?ZF x-- CHKD._ Z.11�_ -_ DATE GA= , 7Z Qoo _ *. 43 c�'S Q 3 - G�� 2 s fs zo 7 .� o C) o az,r� 1,09 , v9 �.o� /•o o -4.1 a,�� Cam•3C� �. / 7,S ,< .�•oz /o.�2 2.75 7. ;3 0.74- 3,40 3.&0 17�-le,y,e OUTFLacJ RICHARD F. KAMINSKI & ASSOCIATES, INC. ARCHITECTS • ENGINEERS SURVEYORS LAND PLANNERS JOB NO. ----------- SHEET_ II �OF--f__ PROJECT___1_ ----- CALL. yc-- DATE---91�2_-8� SUBJECT_-_ CHKD. 11V- DATE I d- 13,630L4 VoLume — '".Gr. l�a•a D # I v QcfS U 79 /5 9 IL16.55 1,�.l /7 2- /7,¢ 172�7 o RICHARD F. KAMINSKI & ASSOCIATES, INC. ARCHITECTS ENGINEERS SURVEYORS LAND PLANNERS JOB NO. -,..,,.,.,._ SHEET-Za _OF-�� �LJS�------ CALC �.�...._..r....r_- DA7E sUBJECT / /1/�? ----C9L��lt�t'T/Q,c15—__ CHKD — W. w•!�� DATE 7 o27. S L70 /7, 2 72.8 8 Z 174 107 4 8,7 /71- r,2o.v d /z3.�0 9. 20 G - 17 RICHARD F. KAMINSKI & ASSOCIATES, INC. ARCHITECTS • ENGINEERS • SURVEYORS • LAND PLANNERS %j JOB NO. .___...._.........---_ SHEET.. �!� _bF_.LJ PROJECT---J-o/�61S -_/'y 6AllTY �s7-----._...-- CALC.._....�f�?'� DATE SUBJECT---- -------- CHKD.--_-��--- DATE a. �.s� 8P i Q 2. � cfh i 1 20 . 7 7•s �:8� a2,s� '�4, 9,?- a. Ir'.a 2.. S8 el201 12, ¢ 02.8 C 4.04 9.24 02, 6 I'75 1, 44 9 z2.5 RICHARD F. KAMINSKI & ASSOCIATES, INC. ARCHITECTS * ENGINEERS SURVEYORS • LAND PLANNERS ! JOB NO. _________....... SH££T_L4-_O!=_/�_ PROJECT------= /�C�1J� _ � �� --- U�L--------- CALG.--- _ -_--- DATE SUBJECT.... LL-?PfII`lff�. - GAG��l1Z�10 -- CHILD. --- DATE -!-' Q /D Qf � f 5 o2n 0 5 �.y��.rar� �Y7�•�'o G�',zfl���i' r oR �6N,D � .2 �2.a 5a ID•d �a.S ISo 175 G2o.o Qc�s 4& ll.lz 11.72 Ii,�12 12.)Z J2. l7 7.a-lP � n RICHARD F. KAMINSKI & ASSOCIATES, INC. ARCHITECTS • ENGINEERS SURVEYORS LAND PLANNERS • . r � o,E' 65 ��,�1LT�' �f�U __ CALC._ Y /7 _ DATE --- --__-� PROJECT--; . - ------- --- ----- , CHKD.--='—'------- asp ---------=r_-. 4 0 C57) i /./z 7. S //, `7.2 3,p 3 ,28 44,al. .�g.o� 7, 0 7,z 57, 5� 7a. 9 v 4 7 r7 0 ,` 73 O r _ then computed by dividing the total overland flow length by the average velocity. 10 26 SU 1 I S i I -I I•it-^""- -�- -�`�i i SO Ll 30 3020 I 7- 10 - l 2 h. ti 14U 17 ' •3 .1 ,3 �.s 11 2 J 3 10 2d .1 VELOCITY 1H FEET ?ER 5ECO'M Figure 3-1. --Average velocities sdf or estimating' travel. tim o e for Storm sewer or road tter flow Travel tiles th-rough the storm sewer or road gutter system to the main open channel is the sum of travel times in each individual co=, anent of. ost inlet and the outlet. in most cases the system between the upperm average velocities can be used without a significant loss of accuracy. During major storm events, the sewer system may be fully taxed and ad-. ditional overland flow may occur, generally at a significantly lower velocity than the flow in the storm sewers. By using average conduit sizes and an average slope (excluding any vertical drops in the system), the average velocity can be estimated using M�anling's formula. Since the hydraulic radius of a pipe flowing half full is the same as when flowing full, the respective velocities are equal. Travel time may �'_�' ome1�. w����r-'w��'.�?:�4 -'�:,��f. - Y.44.a - Y.-.a '�. � di�,�'V S� q� _ _ _ ��•r•.,.- - ' !����.}-�,r��"� Imo{- _ •�r��__.-... HYDRAULICS OF SEWERS 81 1.500 2.400 0.004 0-5 0-4 2,000 0.3 0-005 ' 1.000 1.500 0.006 0.6 0 2 800 0.007 600 1,000 0.008 0.7 50D 800 0.009 0.1 0.01 0-8 0.08 400 600 0.06 r 300 500 - _ D'9 0.05 - 400 1-0 10.04 20 0.03 200 300 ;, 0.02 al 15 c 0.02 zoD '- 0.03 100 8 o 1-5 0.01 D 9 n 0,04 0.008 60 100 •n 96 8 0.006 50 80 84 7 C 0.08 0.005 ° 4,06- 40 60 a 72 6 m � O.Ga_•1� - D.D04 n 3.45 10.003 30 SD c 60 5 "' C0g7.u3- k 40 m N 54 o p,0g09 m u p 0.002 H 48 4 ,n v 0 26 0 n 42 ro t 0 15 a�i c 20 v q 6 3` -r, � 0.001 o u ,n 33 �,��o -C.CiO Q 11 0.0008 .2 30 Qaw E f0 0 27 ra 0'D«0.2 0 0.0005 8 c m 24 _ . Y �.� 4.D06 �' 0.0005 to C E 21 a 0,0004 `a 6 m t 5 8 L o 18 0 3 0 0,0003 u u • � v, w 'p 4 6 d 15 0-4 -5 0.0002 3 5 12 0.5 4 6 2 10 0.6 0.0001 3 0.7 0.00008 e 0.8 7 2 0 s 0.0000 1.0 8 0.000D5 1.0 6 0.DD004 0.8 m 4 0.00003 w 0.6 1.0 4 10 0.00002 0-5 0.8 y d 2 0.4 0.6 = 0 -'_ 0.00001 .3 0 5 0.4 - 3 11_ 0.000008 S-15 D.G00006 0.2 0.3 4-1- O.000005 0.00O004 0.131 0.2 5118 FIGURE 22.-Alignment chart for'Manning formula for pipe How. in which the nomenclature is basically the salve as that used in Equation 13 and C is a coefficient related to roughness. The forinul,% is used widely for pressure-concluit or pipe floe, although it is equally applicable to open-channel conditions. Publi-shed values for C have come largely from pipe-flow experiments, while many of the reported 7z values are from open-channel flow tests. The Hazen-Williams 4 i`•v7k'� •"dT• -ti -- n'j-ws :� _ -�`.• - Yri 9t;�a - a = Crc5-5- SeC7fOr7�lf -� jr-ecy of worerwou or hcH- full wed der 4 R = = riydraulic radl'u5 r SECTION OF ANY OPEN CI4,kN-A iE.L SECTION OF CIRCULAR PIPE Y=Averpge or mean ve%ci fy irr feel per second. Q = c Y =Discharge of pipe or chonrne/ in cubic reef per .5ecor2 d (c. f.s.) . /7 = Cae;il'Cienf of' ror�9hncss ofpipe or clhcrnne/ surface , see ab/e A-Py./$ 68, S = S/cpe of /7ydroulic Groa'ieia (t�Gfei`surfoce in pperl chcn�e:'s o.� p�P es nod uncer p.-essure, .5cme as s/oPe of chonne/ or pipe rover; Only When f/or✓ /S u17i:Or/77 in e'017.5f0n7' section_ FIG. A- HYDRAULIC ELEMEN15 OF CHANNEL SECT IONS . 100 90 60 I-T I I V r 2 70 -T r u uj 60 3 50 O J LL Ao LL. _ 1 O'05 O R� 30 G JOG 0L Q $o -- - © 0 10 20 30 GO 50 60 70 80 90 !00 110 120 HYDPAULIC ELEMENTS PER C ENT OF VALUE FOR FULL SECTION (APPROXIMATE) EX.4Y/PLE.7 Given : Di'schor9e =/2 c.715. lhraugh a pipe which /ics capccify {/oEsing {u// 0f /S C.f. S. of a ve/o city or' 7-o ff per sec. iPEy uiieo� fo rd Y fcai Q = /2 c. f.s. 0Crce/7fo9e of fu// a11-cCh, /- js = BD% Enter chart of 3 of yc/ue /0r fu//Sec/iar7 of f/yc�au/%c E/err�enfs, find Y= //2.5%x7=7.J f'f per sec. . FIG . B--LIALUES OF HYDRAULIC ELEMENTS OF CIRCULAR SECTION FOR VARIOUS DEPTHS OF I'LOW. CHART 2 ISO 10,000 (3) 8,000 EXAMPLE 6. _ !68 6, 0.42 inches {3.5 1-1) 156 6,OCO p.17.0 cis _ 5. 5,000 6. 5• 144 w• Hx 4,000 D fast 4 132 5• 4. . 3,000 11) 2•5 9.6 120 (2) E.1 7,4 2,000 (3) 2.2 7.7 4' 3. 3. 108 iD in foot 3. 96 1,000 BOO 2, 2- 64 600 500 / 0 2. 400 / 3 72 1.5 1.5 W 300 ��� to ►LJ 1.5 z S0 0 200 / z z 0 54 o J 100 Cr uJ 48 / 80 Y 7 I-- 1.0 1.0 a 60 a v 4? uUi 50 ENTRANCE 1.0 t,, HW SCALE TYPE O 40 D 9 .9 Cr a 5guore edge Rilh �r .� !W^ 36 30 'il hood-all p til Q a 33 2© {2} Groare end .ith LJ 8 8 head.oli o .B 30 (3) Groove and psolstting 27 10 .7 T_ e .7 24 6 To us• scale ;2) or {3) project 5 horizontal,, to scale (1),lhen 2i vie stralghl inclined line through •6 •6 4 D and 0 scales,or reverse as , fi illuttrated. 3 18 2 •5 .5 15 .5 1.0 HEADWATER DEPTH FOR 12 CONCRETE PIPE CULVERTS HEADWATER 5CA1_ES 253 WITH INLET CONTROL REVISED ,,SAY t964 11u""U Of PUBLIC ROAD' JAM. 1963 5-22 s _-. __..mat. •,.. ,�..,. EXISTING CONDITIONS F,UC�TiitiT101\5 FM RUNOFF fH3T VrZATIQS Forbes Realty Trust CCM-O. 'aX P. A. Richardson L1ATZ 8/7/86 51i= Tj_ OF � Rt.114 6 Peters St � TE Dcs1C?q 5T 'l 10 YEAR �'4TiON N. Andover MA C'C= Ey I. William Place n' O R" p n r rt aZpu_qReach T`n �1v+linc ilowlinc A C CA LCA Lc i Q PipA Size full a n L Flow Lxation c'lcvatinn Lxation Elevation .fires Acres Acres h4ins. in/hr. c.f.s. n= c.f_s. £eet/foot ft.sec. fit mins. CB"A" / 188.59 188.15 .382 .77 I .294 - 15.0 5.5 1.62 112"rc 3 2 4.1 55 1 .22 I 11 I I f I ! I I I I GB"B" 1 188.15 CVC" 183.49 1 .087 1 .70 1 .061 1 .355 15 A 5.5 171 I l2 rcn 6.59 F .034 138 I .SL I I ! I I I I I E I C"C" 182.84 C820 174.42 "o I. 3U I .6» J.5 3.60 12"rcn 16.19 .030 8.2 1285 I I 1 CB#20 173.83 I D`SH +121 172.55 11.94 1.37 .72 11.38 I6.0 1 0.3 " '7. 1 12"rcp 4.8 7.3 1 .018 1 9.3 172 13 *HW = 1 I 2.67 DMH #21 172.48 DMH #2 L64. 1- - I- - ! - 17.31 �! 15 v" cnl 1�� .0Tb I 10.4 1 .34 - I I € I I I I I I CB #22 165,49 DMH ,'.`23 164.96 2.77 1 .52 1. 4 1- 110.0 5.0 17 M 20 1 12"vca 6.81 7.Zwl 036 9.2 114 !-- HW = I I I I I tI I I 1.30 DMH #23 164.83 DMH #24 152.35 - ! - 1- 1 - 1 - 1 14.51 115"vco 14.8/ 052 113.8 1240 24 I - I I I I C$ 024-A- 154.31 MH #24 I 152.41 1.55 1.51 1 .79 I- 10.0 I 1 3.95 112"rcv 1 7.32 042 19.4 145 - I 1 I I { I I I I I ! I 1 MR 1-247$ 158.02 C`fH #24 152.24 2.75 .65 1 1.79 f- 10.0 I 5.0 U 15"rcn Ill 6 I 032 i 10.4 _f180 ! .29 ! DMH n24 151.75 DMH "26 146,37 - - - - I - I o 18"vcp 124.2/2.7.5 .053 I 1103 1 1 *HW = " - I I I 4.24 1 dw Z 149.18 C$ ,.25 148.85 .17 1 .43 .08 - 11.0 4.8 .38 10"vcn 1 2.8 I .016 3.5 120 1 .09 CB f25 I 147,66 DiH ,2fi 147.24 .92 I .50 .46 I .54 11.0 I 4.9 2.59 10"vc 3.0 I .052 9.3 {8 I i DMH 7-26 14 . DMH I I I I Ivcv 125.1/26.7 057 I15.1 1218 8" I CB ,I27 136.14 DMH ==28 134.52 .34 ( .6 20 - 11.0 4.8 4 ** U vcp I 1 1118 123 1 I I I CB 28-A 136.56 DMH #25 133.87 .54 21 - 11.0 4.8 112"rcT) 1 7.9 I, ,049 7,0 5 13 I I I I 1 I 412S 1 133.42 I ➢MH #30 118.78 I- - I - 132.31 2 vcp 54.2 .057 17.7 1280 .26 I tea 9 H dk 119.32 47 1 .57 27 - 1_22 12"rc1D .65 " carry over included Existing Conditions �\LGL1iiTI9S flCR RUNOrr ryWli1�*1INATICN Forbes Realty Trust 8 7 86 CC6f°. BY?. A. Richardson L1ATH / / SEs Z OF 2 Rt.l :. & Peters St IDESIM STCrM 10 YD%R I--+ZTrouo4cy LOCi,TiCN N. Andover, W, G•'=.CCU By I. William Place DATE I c I -r u ti Reach ua a �lv llnc flcwlinc A C CA ECA tc I Q Pike Size full sp n Ia :low I Location EJcvation Location Elevation .fires Ac es Acres rains. in/hr. c.f.s. n= c.f.s. feet/foot ft.sec. Legit Mims. DMH 30 119.04 CB =:`32 100.16 I - - 1 - - 133.53 2k"vco 56,9 .063 1 .8 300 I .27 ! 1 I- I~ I 1 CS -32 100.16 1 C8 5i G 64.C3 .73 1.57 I .30I- 112.0 1 4.5 1 34.88 1 30„r 4 18.9 �L 1.21 n n4L G4 ME "35_1 81,18, 1 .42 ,.>7 I .2L i.54 1 12.0_1 4 5 1 5.96 30"rco 1 101.6 .061 1 45 1 I 1 1 1 CS 35-A 85.72 I DMH >r,35 SI.Gl 1.41 1.57 I .80 - 12.0 I4.5 3.60 ! L2 rcn g,3 I 054 180 .61 Dutall 171.40 (- I- 1 39.56 36"re I1D1.4 .023n - 5 13.4 60 L,G I I I I I I I I I I I ! I I I I I i I I I i I I 1 I I I I I 1 i I I I I I 1 I I I ! I 1 I i I i 1 I I E I I 1 I I I I I I I I I I ! I 1 I I I I ! I I I I I I I I I I I I I ! I I I l I I I I I f I I I I I I I I I I l I I I I I PROPOSED CONDITIONS :,\LCuLATICNS FOR RUNOFF rN-:-MI3IINATICN Forbes Realty Trust COMP. BY I.W.P. DATE 9/3/86 =S[=r _I OF 1 DESIC14 STCi1\1 10 YEIV2 MEOUENCY LOCA`1'ICN Cabot Village CdECICED BY P.A.R. DATE 9/3186 ou Reach Iiuoua Flv line Flowlinc A C CA 7EC1 tc I Q Pipe Size full o n L Flog irxation Elevation Location Elevation .fires Acres Acres Mins. in/hr. c.€.s. n- .013 c.f'.s. feet/foot £t.sec. feet mans. CB#1 186.18 CB,k2 185,I1 .55 1 .51 .28 5.0 5.5 .7 2 rep 77- -U05 3.4 15 I I CB02 186.11 DMH#24 185.31 .17 .90 .15 .43 5.0 575 2. 12 rep 3.0 .008 4.3 luu DMH4k2.4 185.31 CB#3 184.73 - - - - - •36 rcp .0 - 73 CV 3 184.73 Flared End 184.01 .16 .30 .0 48 0 .5 2.64 12" c 3.2 4.6 n DETENTI0 POND "1 .64 1 .37 .24 .72 5.0 .5 3.96 I CB#4 181.25 CB;#5 181.14 .97 1 .85 1 .82 - 5.0 1 5.5 4.51 15"rcD 5.4 4.9 o I CBik5 180.89 DMH,kSA 179,47 1.08 .90 .97 1.79 5.0 5.5 9. 4 18"rc 12.0 .012 7.6 118 DMH,`SA 179.47 Flared End 179.27 - - - - - - 9.84 18"rcv 12.0 .012 7.6 17 C B TT 179.20 CB96 179.06 .09 .90 .08 - 5.0 5.5 •44 12"rcD 2.6 ,005 2.4 27 1 uo 179.06 Flared End 178.98 .14 .90 .12 .20 5.0 5.5 1.1 12"rcv 2.6 .005 3.2 15 DETENTION POND #2 .70 .56 .39' 2.38 5.0 5.8 1 13.80 I I I Proposed Conditions 1 LCllliiilCCS FDR 1ZWCt: f T;T-0,ZATICN Forbes Realty Trust CCMP. BY P. A. Richardson DATE 8/15/86 �SI�"I 1 OF 2 i � Rt.114 & Peter 5[ - €prSIL S �V 10 YVUR rIIEWE JCY Lo":ATICN N. Andover, MA C �C 3Y I.William place r U C n Reach I t r10w1SnC [lowlinc A I C CA MCA `C I Q Pine Size7EF-9 'd n I L FICw Locaezon �jev�tien Location Hlevatian .tres Ac es Acres iS1n5. ln�(LT. C.i.5. i7= eet/ft70t ft.set. °°t rttins. I 1 CS"B" 1 188.15 1 .382 1 :77 ! .294 I- 5.0 5.5 1•62 1 12"rcD 13.20 1 .008 1 4.1 155 ! .22 ..... _I 1 I I I I I E 188.15 ! CE"C' 183.49 ! .087 1 .70 [ .061 1 . 7 1 a.0 7.5 I 1. 5 12"rcD 16.59 I D34 1 7.5 138 I .31 1 1 I I I I I I I I ! € I I I I hrF I 182-A0 DnfF, 1,a 7- 106 I.72 I .076 .431 5.0 I I 2.37 ! 12"rc❑ { 6.19 .030 1 7.2 1246 I .57 I I 1 _ I L.___-. _I I _!. I 1 I I 4`3- I 7" - 7 I - - I - I I - 1 3.9 1 12"rc. 1 2.53/ _ .005 1 10.8 154 I - h� = I I I I 1.73 n-M Al 175.46 CB 4`20 1 174.17 1 6.27 15'rcn 111.22 .0�0 I IJ9 1 - I. I I I i I L I - - ! I I I I ] Cb ==20 173.83 DMH 4121 1 172.55 1 .269 1 .83 1 .223 1 .654 1 6.0 1 5.3 I 7, 7 18.rcD 1 14.13 O.0 173 1 ! I I 1 1 1 1 I ! I I I I _ IDkM 21 1 172.48 1 DMH ,23 I 164.83 I - I- I I - - - I 7.37 1 15"vco 12.29 .036 1 1 . � !215 ILL I CB ;=22 165.49 D91H 1-123 E 154.9 .75 1 .42 1 2 f - 1 o•u I 5• 1 1..70 I 2 vcp I c.>> 1 .036 1 6.8 114 1 - f 1 DmH 4123 164.83 1 DMH ;'24 1 152.35 - I- - - I - I - I 9.07. ? vco I 4.b 1 .032 1 12.9 I24U 1 .31i r :: -p 154.31 DMH '.`24 I 152.41 1.55 .51 I .79 I - 10.0 I 5.0 I 3.95 112"rcD 17.32 .042 I 9.5 145 I - I DMH `24-s1 155.02 f DMH L24 I 152.24 12.75 I .65 1 1.79 - 10.0 I .0 { I 15"rcn 1 11.6 .032 I 10.5 11,50 I .29 DMri ::24 151.75 DA1H 126 146.37 I - 1- - 1 - I I 21,97 124.2 .053 1 13.7 103 I •11 Co_"=25 I X48.85 I .17 I .48 1 .08' 11.0 1 4.8 1 .38 1 10"vcn 1 2.6 1 .016 ! 3.4 120 i r_r n,5 rL7.66 1, DM-H 2.'26 ! 147 I_.74 I go _I .50 I .46 I .54 11.0 I 4.8- I 2.'59 10 vcp 1 5.0 I .052 I 4.2 18 I - 1 ME i-L26 1 146.17 1 DMH v28 I 1 3. I - - I - I - I - - .24.56, 1 1 vcp 1 ' I .057 I 16.3 €216 .22 1 �a ;f27 1 138.I4 I DMH ,128 1 134.52 I .6 u 11.0 4.8 1 3.42 '1 vcp a.a 1 .Ur 11.1 J-) - I I ! I ! I I I I * carry over included Proposed Conditions r 11�� ;;1CsS Fit RINOcr I?�aL3Sti11�PFICN Forbes Realty Trust LCr,g: By P.A. Richardson DA1- 8/15/86 S T 2 O: 2 i I Rt.114 & Peters St iD IC S 24 IO �T1tiR Fu'C�UF GY 1 .+:ICxV N. Andover. MA By I.Willian Place DATE 71, nin_, T-I,t I_ h�ou Roach - i ?nr �a v Flo=lirnc Flow.linc A C C1 MCA `c 2 Q pipe Size full 'o n L Fla+ Irxation lcvatian Location Elevation :�^.es Aces Acres dins. in/hr. c.f.s. n= c.f..s. fe=t/`oo= fW.sec. feet rains. *7.- I i I n*oa + I i ! 5G I S 7 I_ ! 4.8 1.30 2"-^ 17.9 04 1 7.1 I55 I 11 i ! I t??{H 428 133.42 DlfE '30 113.78 - I I - I I_ E - ! 29.28 ' 24"vco 154.2 I C57 17.8 1280_ I 1- 7 1 I I I I ! I I I 1 I I ! EFv CB :i29 ! 11y. _ K s.=�U 1 119.32' 1 .47 I.57 I .27 I- 12.0 ! 4.5 E I.22%� I t2 rcn II.22w` - I 15 E- I ID "30 1 119.09 1 C3ss32 1 100.15 j- I- f - !- I- ! - i 30.5 124 vco 56.9 i 063 ' I 18.8 3QQ .27 ! ! E I I I ! I ! I I I I I I I CS '.`32 100.16 1 C8s:3 1 {•Oj I•» 7- 1 .3U ! 2. 1 4.5 ! 31.85 1 1U rep IO 0.4 I Q67 1 24j 1 .2I 1 ! I I I I ! 1- C8 ;; 4 1 bS.yt 01.i0 24 1.54 112.0 1 4.5 _ 32�93 130 rcn 1101.E .061 I a €45 1 1 I I I I I I I I I I ! I I I CB ;;35-.A I 85.72 D?fH si35 81.41 11.41 1.57 an I- I �� 1 4.5 I 3.6D 112"rcn 18.3 __ ! .054 I ln.n_.__-_ . 180 l I f I I I I I I I 1 E I I I ! I I 1 P7]-.iz°-'3a 80.6? j Qutfa 1 1 rl.k _ I- - 1- I - I - '_36.53 1 36"rcn 1101.4 I .023 I 13.3. 1350 - .45 ! 1 I l ! I I I ! 1 f I k f 1 ! I I I I I 1 I I I I I I I I I I [ ! I I I 1 f I I l I ! ! I I I I I I I I I I 1 1 ! 1 I I I I I I I I I ! I I I ! ! I I I I I I { I E I I ( I I E I 1 I 1 € 1 I RICHARD F. KAMINSKI & ASSOCIATES, INC. ARCHITECTS • ENGINEERS • SURVEYORS LAND PLANNERS JOB NO. __....._______ SHEET_�_OpF_BF :! 7 J CALC.-- ,—b / -- DATE SUBJECT----- --- CHKD.--��' _f��__ DATE �716 Q 2 o r 0 20 4o RICHARD F. KAMINSKI & ASSOCIATES, INC. ARCHITECTS • ENGINEERS • SURVEYORS , LAND PLANNERS g JOB NO. _____----__ SHEET-!-__OE_1 _ PROJECT_-- T___----- CALL.__ DATE SUBJECT --- CHKD.__ � DATE r 1 A0fJ7-/,V6- r�rDNr�V�J 1�� T/CIF" 7-41FLv 2's, �, // 3 , �/ �• // /, f- 12, 9f 7, rd 38.90 5, 9 /o.o 4F,6' /�1a.43 7114 7.6 /7,s- r.¢r 55:77 8, i zv.o o ��•9� RICHARD F. KAMINSKI & ASSOCIATES, INC. ARCHITECTS ENGINEERS SURVEYORS • LAND PLANNERS JOB NO. _____------ SHEET2I -_OF_ PR0JECT V CALL. �_ !`� �C--- DATE .��PA��1 f r ��fLG %�., CHKD.-z•yt� E--- DATE _9 -3 SUBJECT-------------`-1�b?.,�- --- U-L--.�L'�„---_ ... -=--- /DO G = , 7Z cZ 376 Z �. Q 3 - Lf� 2 i o s IS Zo T r�•n o v oq v v /O.6Zz 2.75 /O,O � 7+ �8 /3.38 3• IO I S.54- 3,4 0 2o.p o r 1.36 tea.s o RICHARD F. KAMINSKI & ASSOCIATES, INC, ARCHITECTS • ENGINEERS • SURVEYORS • LAND PLANNERS // - {{ JOB NO. __-- ---- SHEET. !L-OF_-�-_ PROJECT..., ,,._L_ vi- -�----------'_-=TLPU57�----- CALC.__ y DATE g g� 9lfBJEGT---� �2 2fM ---� L�� Z-/O/EIS __ CHKD.__=T �V. p, - DATE 38/ f7- -2.31-J1 13, ------------- /7 6 d,r3 Q� v 79 /s,g /�.5-s /7Z 17¢ IZZ5 o RICHARD F. KAMINSKI & ASSOCIATES, INC. ARCHITECTS • ENGINEERS • SURVEYORS I LAND PLANNERS JOB NO. -,-�J--f-t_......,-_- SHEET-j�.-OF-1�- PROJECT---raj/� SL/ Y_-� r�ST"------ CAL.C. -L- r- •-- DATE SUBJECT-_ T/Qi(IS--- CHKD.- Z-±!�- -- DATE r�2. � .ra i�• 9 /7. � d2 `7, S r.c� '7•6' /l. 49,95- ';�,I/'--5 16 ,9 / 70. / 75 /7.2 7z.8 g9. 2 8 z /774f 190 1074 8.7 i7,S- 17,25- iQ24165" 9, 2S 41- �2 90 As ze-,L. -- RICHARD F. KAMINSKI & ASSOCIATES, INC. ARCHITECTS • ENGINEERS • SURVEYORS • LAND PLANNERS JOB NO. - I_______-_ SHEET_ 2_OF-L6---_ PROJECT---f-o/E'6lC---S __[�E. LTy--� ---------- CALC. !�, ` f DATE _�=3_o'/' -- SUBJECT_ __� ��AA 4� LC� T� 5----_ CEt3CD. �, Vim' _- ©ATE G. 72 D Q S IS 2d /rJIC NF�vrt1 f� /< dUTFG caW 0 0 0 o C:) 144 . 0¢ /, 9 .7 o -2.88 150 2. 8, I'15 1, 44 3.8�. I g.�� -2 . �5 6 6- 22.5 1 IB 4. 916- RICHARD F. KAMINSKI & ASSOCIATES, INC. ARCHITECTS , ENGINEERS • SURVEYORS • LAND PLANNERS J JOB NO. _______..--- SHEET. 4--OF_f�5 PROJECT---- RCS_/_ J'U�1 -7�-----__. CALC. /Y. ___ DATE- - SUI3JEGT---- OP�II� ���---G/jG�lrl L_fOiU -- CHKD. 1. W. --- DATE -�� ID q.5 z o fs a S azv 2-o.o �,46, 11,/Z Il.72 !1,IZ )2.1z )2, 17 '7.a4e N d RICHARD F. KAMINSKI & ASSOCIATES, INC. ARCHITECTS • ENGINEERS • SURVEYORS LAND PLANNERS � JOB NO. ___._---_..-_- SHEET_ I� OF- DATE _-- PROJEGT_. �-----S GALC. SUBJECT-- D/gAJ&UI{6'E__ /IGs� %Z lC)N�___---- GHKD.. - — �----- DATE _ -_——- S i2 I/-44 /g,2 3.9 ��. 7z q2 7, D i a 12, 17 5 7,4 4 57, 55-�5 -7o2-.16, 7, `7 73 • then computed by dividing the total overland flow length by the average velocity. 20 1 T SO so 3 -- -: : ! j T'-- i i l ` t T 10 10 o s ? I 1 r � F i !� I •�:'1 —r - — - -- -- t- - t — . . t — 4 �.S 1 2 10 20 VELOCITY IN FEET PER 4ECOVD Figure 3-1. --Average velocities for estimating' travel time for overland flow. Storm server or road gutter flow Travel time through the storm sewer or road gutter system to the main open channel is the sure of travel times in each individual component of. the system between the uppermost inlet and the outlet. In most cases average velocities can be used without a significant loss of accuracy. During major storm, events, the sewer system may be fully taxed and ad ditional overland flow may occur, generally at a significantly lower velocity than the flow in the storm sewers. By using average conduit sizes and an average slope (excluding any vertical drops in the system), the average velocity can be estimated using Manning's formula. Since the hydraulic radius of a pipe flowing half full is the same as ies are equal. Travel time may when flowing full, the respective velocit �' � Sao �N 1 ON y h 1 HYDRAULICS OF SEWERS 81 1,sOO 2,400 0.004 0.5 OA 2,DDO 0.3 0.005 1.gO6 1,500 0.006 7 0.6 0.2 800 0,007 600 1,000 0.008 0.7 500 800 0.009 0.1 0.01 0.8 O.03 400 600 500 0 g 0.06 300 0.05 400 1.0 O.O4 200 20 0.03 300 m 0.02 v 15 c 0.02 200 - 0.03 100 0.01 80 90 0.04 0.008 100 60 96 8 .Q 50 80 0.10 US 0.006 84 7 0.08 0 005 0,004 7 40 60 72 6 a 0 C0 0.C5 fl.003 30 50 0 60 5 `6 C.C{4.C3- a 40 N 54 o 0.0?+SA9 > w = 48 4 4.l 0 - D.002 0 20 42 m OR �o� c c �O.J15 0 20 m 33 3__ a k' 3 ti 0.001 n 30 Q D� ri o f C.010 n II 0.0008 a 10 0 27 .0 C.R 0.2 m c 0.00O6 8 c a 24 _c 4.006 .°' u) - 0.0005 6 10 m 21 4 T 0.0004 5 8 Q I8 D.3 '6 O.D003 u o n 4 6 15 0.4 .5 a 0.0002 3 5 12 0.5 4 6 2 3 10 0.6 0.0001 0.7 0.00008 8 0'$ 7 0.00006 2 0-9 0.00005 10 6 1.0 8 0.00004 0.8 9 0.00003 a 1.0 0.6 4 c 10 0,00002 0.5 0.8 a 2 v 0.4 0.6 0.5 ' 0.00001 0-3 0.4 3 u 0.000068 �aui 0.2 0.3 15 0.000006 4 D.00OOOS 0,000004 q.13 0.2 5 18 FIGURE 22-Alignment chart for 111anning formula for ripe flow. in which the nonienclature is basically the same as that used in Equation 13 and C is a coefficient related to roughness. The formula, is used widely for pressure-conduit or pipe flow, although 16 is equally applicable to open-channel conditions. Published values for C have come largely from pipe-flow experiments, while many of the reported ?z values are from open-charnel flow tests. The Hazen-Williams ram" �, + 3 : LJi 1:-�� ��r�� L � U:_ � � ._.. c \.� l,L'�.�� I`"i � ._ _ t .Mt..� ��' lt; ti�t..J � �� � i�i , •.� _j A = Cres5- 3eCFrOna1 area cal waierwou or hclt- roll ,a= we�tea perime ier R ---D a 'f' r SECTION OF ANY OPEN CHANt iEL SECTION 01: CIRCULAR PIPE. V=,overage or mean velocily in feel per secOnd. Q = ' V Discharge of pipe or charme/ in cubic /'eel Per .secoryd (c. f.sj. n = Coeiiicienf of rouyhr2css 0fpipe or cf2anne/ svrfoce , see cb�'e ,4-Py./B G8. S = S/ofae of f/ydroulie &,rc, " of (PVC&l- Sur/oce ir7 open chc-r7r0:s 0,-- pipes not ur�c'e." p.-essure, sa.r�e rys slope o{ chonne/ cr pipe rover; an/y yvhen f/ow /5 uni:orm ire c'or�.��`onf Section. FIG. A— HYDRAULIC ELEMENTS OF CHANNEL SECTIONS . ?00 ITI I ,kl / ,V 80 7 70 -- U 41 ul 60 a 3 �o , 0 J LL LL = 3o F- N Iocl w20 — - - i — — - - --- — to w - O --�--�— a to 20 30 Ito 50 G0 70 so 90 100 ►ro 120 HYDRAULIC ELEMENTS PER C ENT OF VALUE FOR FULL SECTION (APPROXIMATE) EX,4/YPL F.- 6iven : Disch or9e =/,?c.f.s. through a pipe which hos capoc-ify {/o�v;/;,g full of /S r f. s_ of c ve/o oily of 70 ff per .50c. 'PFgeli.-eal fa �i7d V for Q /2 c. f. s. �ercenfaye a�`'fu// �iscflorge = js = 80711 Er�fer- clio�f a/ �30% of Yam-/ue fr fry//section of 15yoraell%c fs, And V=//2.5%x7=73 f'f per sec. FIG . B-I,/ALUES OF HYDRAULIC ELEMENTS OF CIRCULAR SECTION FOR VARIOUS DEP-rHS OF SLOW. CHART 2 180 10,000 8,000 EXAMPLE 6 36f3 6, D,42 lecher (5-5 f•et) — 156 6,OCD 0.IzD cis _ 5. 5,000 6. 5. 144 w• err 4,non U feet 4. 132 3,000 (1) 1%5 0.8 120 (2) 1.1 7.4 2,000 (3) 2.2 7.7 4' 3. 3. 108 ID in fee! 3. 96 1.000 800 2, 2- 84 600 500 p 2. 400 / 3 72 �p��/ 1.5 1.5 300 ,�i� N x v En / w 1.5 v 200 60 W z z 4 c� 54 o lJ 100 ? / 80 i as 1.0 1.0 x 60 t1l 42 ENTRANCE v � 50 (.0 LL• — HW SCALE TYPE � 40 D g .9 a Gt 36 34 {t} S�.ers edge •i!h 3 .9 1,_ p Uj Q 33 (2) Groove end with W 8 .8 Q 20 hood-all p .6 30 (3} Grpowt and projecilnq 27 10 7 T e .7 24 6 To uss scale (2) or (3) project rJ horitonlallr 10 ccole 0),then 21 use eltalghl inclined line through .6 .6 4 D and 0 stoles,or to"rso as 6 iliuitroled. 3 (8 •5 .5 15 5 1.0 HEADWATER DEPTH FOR 12 CONCRETE PIPE CULVERTS HEADWATER SCALES 2133 WITH INLET CONTROL REVISED MAY 1964 BUREAu OF PUBLIC ROADS JAN. 1963 5-22 Y EXISTING CONDITIONS r�1CZ1v,TiCfS FoR RLNOre rk,=- mnLATICN Forbes Realty Trust CCM-D. 'BY P. A. Richardson =rK--- /7/86 Sl--=- �_ 07 Rr.114 6 Peters St �QICti S��S 10 YuIIA m0"'I N. Andover, 1�A � BY I. Wiliia� place I Q n r r' r u Reach i T uc' aN Flv41inc Flowlinc A C CA ZCA vc W 0 Pipe Size � ft:11 'o r. � LT1� iAcaticnEicvation Lcxation Clevarion Acres Ac-5Acres Mins. �in/hr. C.Z.s. n= c. .s. feet/foot fv.Sec. feetras. CB"4" i 188.59 I C311B" 188.15 1 .382 1 .77 .29L I- 15.0 5. 1 1.62 1 .0,)s 4.1 55 I .22 s 188.15 CB"C" 183.49 I .087 1,70 1 .061 1 .355 1 5.0 1 5.5 1 1.95 12 rcp 16.jg ! 034 1 - 1138 I •yG I CB C" 1 182.89 CBP20 174.42 1 .855 1 .30 1 .b» >.0 1 13.60 12"rcr 16,19 1 .030 1 8.2 1285 1 .58 I I I I I ! 1 1 Cb r20 173.83 I D 1H 3:21 172.55 1.94 .37 1 .72 i 1.38 16.0 1 5.3 7.31 1 12":cD 4.8 7.3 I .018, 1 9.3 172 1..13 1*2, = { 1 ; 67 At GI 321 172.4 DLL 1;2 -164, 3 - - I I - I - 1 7.31 115"vcn I 2• 1 CU"1 10,4 1245 1 .3�+_ I I I I - CB #22 �1 165.49 D ,!23 16L.98 1 2.77 .52 1.L, I- 110.C 1 5.0 7.70 12"vcu 6.8/Z2 I 036 I 9.2 114 J° _ I I ! ? f 1.30 D*ti ,23 164.83 D.Lk F24 .5 - 1- 14.51 1 15"vcD 14.8/ .052 1 13.8 1240 1 .29 1 15- a I- ! I I I i I I I I I I I G�n 4`24-A_ 154'31 i'C: #�24- 152.41 11.55 1.5'_ 1 .79 .1- 1 10.0 1 5 0 1 3.95 I 12"rcD 17.32 1 .042 1 9.a 145 - 1 ! I I I I I I I I I ! I I 1 I ➢A1? "�L-B 158.02 CfH A24 152.24 2.75 1.65 1.79 I- 110.0 >•0 y.0 15"rct 11.6 1 C3? 1 10.4 1180 .29 I I I I I I I I ? I I I 1 I i• i A24 151.75 ➢Hh i-26 146.37 I - I- - I - - I - L0 I 18"vcp 124.2/27.5= .053 .5 103 1 Do 1 :72 = .24 I nw�? � 149.18 CB 0-25 148.85 .17 .48 I .08 - 11.0 .8 .38 1101vcD 1 2.8 .016 ! 3.5 120 1 .09 CB 4'25 147,66 DMH r26 147.24 92 .50 1 .46 1 .54 1 11.0 ! 4.8 1 2.59 10"vcp 5.0 1 .052 19.3 18 - I 1 f ! 1 ! 1 i ➢t�- 14 DMH #26 1133,74 !- - I - - - 40 n 18"vcD [25.1/26.7f. .057 I 15.1 1218 ` .24 FiiW = f 1 1 I 1 3.01 I Cs #27 � 136.14 DM'd #28 134.52 1 .34 1 .6 .20 ;- 11.0 1 4.8 IUvcp ;.R I n7 I 11.8 CB 428-A 136.56 DMH ,p28 153.87 1 54 I.D 111.0 4.8 I1,3Q 12"rcD 7.9 .049 7,0 5 .13 1 n .`n 133.42 r-MH #30 1 118.78 1- - - I - 32.31 I 2411vcP 54.2 ; .057 17.7 1280 .26 q w» :,3 119.32 .47 .57 .27 q - G. 1 L22 I2":cp 1. .65 carry over included Existing Conditions .orbes Realty Trust i,1�Iti�TICY'S r'�R RUNOFF i'h.""I%i'�7L'QATICxI CCNLp. BY?. A. Richardson F.aTE 8/7/86 ��=-T 2 Oc 2 Rt. a a ?eters St DZSICti STc rl 10 YT-,%R FT=LZ1CY LOCr,TICN \. Andover.. HA C CC J BY I. William Place [ ; nh Tr 1 r^ T' L' Re�t'h 1 '1lf ucl ylowlinc -lowlino j A C C:k c I Q Pipe size dull `p n L ,1aw f Locmtien :-I cvation fpcaticn elevation , yes Ades . Ac:es Mine. in/nr. :.s. n= c.f.s. feet/foot ft.sec. feet m .^,s. I D?fii 030 119.09 1 CB #32 1 100.16 1- I- I - I- 1- - 1 33.53 1 24"vcn 156.9 .063 18.8 1300 1 •27 I CB iF32 100.16 CB 34 84.0 ! .» 57 30 I— 12.C 4.5 34.88 D57 - __1_IS.9 ?t 3 1...221 I L 181.18. .42 -:.57 .24 i,54 1 12,0 4.5 1 1301'rcn 1101.6 1 .061 1 •0 45 ICB 35-A 85.72 = I DMH '035 1 81.41 1.41 .57 ( .SO - 12.0 1 4.5 13.60 1 12'rcv 8.3 1 .054 SO I 3 [ I I I I I ! ! I I I 1 1 1 n :` 5 J, 80.61 pur:all 1 71.40 I- - I- - i - 39.56 1 36"rcn 1101.4 1 .023 1 13.4 1360 I— I ! I I I I I ! I I I I I I I I 1 I I I I I I i 1 1 I I I I I 1 I I f I ! I 1 i I I 1 i I I I 1 I i 1 I I I I I I I I 1 I I [ ! f I ( ! I I I ! I I I I ! I I I f I I I I I I I I I ! I I f I I 1 I I I i I I I I I I I i I I I i I I 1 I I I I I I I I I I ? I I I I I I I I I I I I I I i I I I I 1 I ! I ! I I I I I ? 1 I ................... PROPOSED CONDITIONS J IONS FCR RUNOFF i7L•:I rVZ4A=CN Forbes Realty Trust ccMp- 3" T.W.P. I)A= 9/3/86. S['. E:1 l OF i ocsiC-11 S-IMM 10 YrAR FREQUENCY LOCAiICN Cabot Village C:-:EC:GEIO BY P.A.R. DATE 9/3/86 ^ i + hu Reach I=O Flowlinc Flowlinc A C CA MCAc i Q Pipe Size full Jti n L ;lair location Elcvztion Location Elevation :fires Acres Acres Mins. in/hr. c.f.s. n- .013 c.f.S. feet/foot ft.sec. feet rains. CS;rI 166.18 0B702 186.11 .55 5I .28 15.0 5.J 1.-') _ rcp b1 .005 1 3.4 115 I I ! I CB#2 186.11 DMH#2A 185.31 .17 .90 .15 .43 5.0 5.5 Z.3 6 12 rcp 13.0 8 4J 100 I DMH#2-4 185.31 CB03 184.73 - - - - I - I -•36 I rcp J.04.3 73 I I 1 CB43 184.73 Flared End 1 184.01 .16 .30 .05 .48 5.0 .5 2.64 12"rcD S.2 9 4.6 0 I DETENTIO POND #1 .64 1 .37 .24. .72 1 5.0 5.5 3.96 - - I I 1 I CB#4 181.25 C Bilr 5 181.14 .97 1 .85 .82 - 5.0 5.5 4.51 15"rcp �' 0; 4.9 a i I 1 C84f 180.89 0MH#5A 179.47 1.08 .90 _97 1.79 5.0 5.5 9. 4 18"rc 12.0 .012 7.6 ±118 _ I DMH;= A 179.47 Flared End I79.27 - - 9.84 18"rcp 112.0 .012 I 7.6 117 ' I I I CBzr� I79.20 CB16 179.06 .09 .90 .08 - 5.0 5.5 I .•44 12"rc❑ 2.6 .005 I 2,4 127 1 R 179.06 Flared End 178.98 .14 .90 I .I2 .20 5.0 5.5 1.1 12"rcn 2.6 .005 3.2 15 I I I i I DETENTIO POND .2 1 .70 .56 .39' 2.38 5.0 5.8 13.80 1 I I I f ! 1 f i I 1 . I I I Proposed Conditions y; [VEi,TICXS vl:R RUNOFF IZI M ID4AT"ICN Forbes Realty Trust Cam, BY?. A. Richardson 111� 8/I5/86 r 1 0F 2 _ct.liu m Peters St p.ZS2Cti S i 10 =U1 riSOUIINC: OG+TIG1 N. Andever, KA 3Y I.William place 1 n.TM, 7•,1 r� I ". i n« '�^' L'^h �?2Cs1 1 fi +� ate+ r'1p,,,r1 j;7c '€.1oWiinc r1 C G� FCA `� I 0 Pipe size z l ..� vn L :la., O f urt'ian ��cv�tinn Irxatio� Elevation j.-res Aces Acres Mirs. in/,=. C....s, r= c_f,_s_ � sect/:oot -t•Sec. Beet rtirs. l66.> I CB"a" 188.15 1 •362 I.77 2?4 1- { 5.0 f 5.5 1 1.'62 12"rcp l 3.20 .003 k y 4.1 15.; 1 .22 0B"3" j 188.15 1 C1;'C' 183.49 ! .0 .70 ( .651 3» 13 I 3.5 1 1. 7 12"rap 1 6.59 1 C34 7.5 1138 1 .31 I I 1 1 I I I I I I I I I I I I ire IR,? D?4 41- j I75.59 1. .106 1 .72 1 _076 1 .431 f 5.0 5.5 1 2,37 1 12"-co 16.19 1 .030 1 7.2 1246 .57 7 - •" I 7 .7 I - I- 1 - - 1 - I - 1 3,9 1 12"-co 1 2.53/ _ .005 1 10.8 154 1 - 1.73 n*w-��17 17 5,IL, C3 ,"20 E 174.17 I - I- I - I- I - I - ! 27 I 15`-co 1 11,22 1 .030 I 9 S. I - I I ! [ 1 I I f 1 _ _ ! C3 =`20 1 173.83 1 DXH :`21 1172.55 1 .269 .83 1 .223 1 .654 1 6.0 1 5.3 7.37 18 rcp 14.13 O18 �� 173 I .1 I DMH "21 1 172.48 1 DMH V23 { 164.83 - - - I - 1•, 7.37 1 15"vcp i 12.29 .036 1 10. 1215 1 _3IA D* s 23 164.98 5 42 I _ J- o.u i 0 3 1„70 1 'wca o.r r 035 b,8 i4 i I ! i I i I I I i DIIP. '.`23 154.83 DMh .'24 f 152.35 - I- I - E - - - 1 9.07 19 vcp 1 14.0 .052 12.9I I r• ! '� 4-p I ?54.31 I�DMH =�24 1 152.4I 1.55 1 .51 I .79 ) - ! 1fl.4 1 5.0' I 3.95 1 12"rcp ! 7.32 I � 9.5 I Z3 - I i I I• I I I ! I 1 I DmH =`24-Bj 159.02 { DMH 4.:24 1 152,24 { 2.75 I .65 1.79 1 - ,O.0 ! 5.0 I 8. 1 15".ca 111.6 1 .032 I 10.5 1180 I .29 I)Kh_a`24 151.75 DlE V26 146.37 I - - I - { - I - i - 21.97 lb'rtp 24.2 .053 1 15.7 1103 1 I ! I I ! I I l I ! ! h a '�2_' 1 148,85 1 .17 ! .48 1 .08' 111.0 4.8 ! .38 1 10"vca 2.S I 015 3.4 {20 Dt4F1 426 1 147.2E I .92 50 I .461 .54 11.0 1 4,8 i 2.759 107c-PI 5.0 1 .052 1 9.2 18 1- DMH =`26 1 146.17 D2r: ;P28 1 13S.74 - 1 - - - 1 - 24.56 1 vca -0.1 1 .057 i 16.3 1216 .22 1 �,a ,:27 1 136.14 1 DMFi ,P28 [ 134.52 4 l .o ._v I 1 11.0 1 4_ I 3.42 •1 177cp 1 0.a l .u r * carry over included Proposed Conditions 'Tt CIJiiTICtS FOI RUNOFF Ik I`CrMDATSCN =O1oes Realty Trust Camp. By P.A. Richardson IYuz 8/15/86 S= 2 OF 2 Rt,114 a Peters st ID IC S��I 10 Y'7132 ci 1�U�`1CY LDCAT-TCN N Andover. !L4 1 C=W= By !.William ?lace • rrr= UC �lo++lirc F'lowline n C G+^F LCA �c ! Q �i Size v full ao �n T. Flow Location^^alcvation Locaticn ^^ �lcva�ian :� res Acrss Ades Mins. in/1Er. c.f.s. n= c.*.s. feet/loaf ^f�.sec. feet rn:ns. 1 42 -5 I III-Sr I)v 4`2 I 14457 1 2, 1_ ill n r 4-b� 1 1.30 ! 12"rco 17.9 04g --1 Y.1 15 j 11 I D'.4:: ,28 1 133.42 D?C'3 -30 I 118.78 - 9- - - I- I - 29.28 24"vcn 1 54.2 .057 17.8 2280 1 1 5-7 I Ca 4L29 p 119. _ DxH ¢:3u 1 119.32 1 47 i.57 .27 112.0 ! 4.5' 1 1-22* 112'rcp 11.22` I 1 i 1. __ I -_I_ I __._I_ I I I i I I I I I •65 IDl i=30 1 119.09 1 C3.32 1 100.15 1- I I - I- I- I - 2 'vp 156. I .063 i 27 I C3 ;`32 I 100.16 1 C.B 4 I d/_ s I 1 4.5 ! 31.85 1 . rcp I:, o- 1 .067 1 18.8 [4) 1 .21 C3 ?p�4 ! b3.t14 i 11n '» olio I•-= I-°' I 2L 1.54 1 12.0 4,Ste, 32.93 130 rcp 1 101.6 1 .061 1 10 0 145 1 1 I I f I I I ! I ! I I I I ICn ,�35-6 1 85.72 ME r» 1 61.41 11.41 1-57 1 Rn 1- Its 4.5 1 3,60 112"rco 18.3 1 .054 00 180 171 I I 1 1 i I i ! f I I I I I ADS _ 80.61 ouctall I 4 !- I- - J- 1 - 1 36.53 ! 36"rco 1 101-4 1 -023 1 13.3• 1360 -! 45 f ! f 1 ! I I I I ! I I I 1 I - I ! I I I I I 1 I ....................... ............ __