HomeMy WebLinkAboutSD-476-6I L
DRAINAGE STRUCTURE CHART.
1 STRUCTURE RIM IN IN (SIZE /TYPE) INK OUT (SIZE /TYPE),
1 CB -1
178.83'
N/A
HDPE
0.01'
176.13'
12"
HDPE
CB -2
- 178.82'
N/A
0.01' ':
176.02'
176.02'
12"
HDPE 4
C8-3 1
178.94'>
N/A
175.67'
175.67'
175.88'
120
HOPE
CB -4 (DOUBLE) -
178.83'
N/A
175.67`
R5
17593'
12"
HOPE
C9 -5
180.77'
N/A
R6
16'
17,7.26'
12"
HDPE
175.93 :
CB - 6
,
180.77:
`N /A
12"
HDPE
177.26
12 "
HDPE
R8
DMH -1 (SC)
179.52'
175.92'
12"
HOPE
175.67'
12" -HDPE
112' j
12"
DM H-2
..179.0
r
1 5
12 "
HDPE
1756/
12 "
HDPE
DMH -3
178.92'
175.77'
12"
HDPE
'175.67'
12"
HDPE
OMH -4
180.68'
177.14'
12" :HDPE
`'
177.04'
12"
HDPE
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10
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PROPOSED LEGEND:
BB BREADL
OAF BERM
❑CI -1 'PROPOSED CATCHBAS /N
® DMH -1 PROPOSED DRAIN MANHOLE
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4 PD PROPOSED HOPE DRAIN PIPE
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23 i; ON BY LEO'
4 `WETLAND DELINEATION
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OJ F ENVI ONMEN7AL 1N APRIL OF 2015. w PROPOSED WATER GATE ,
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5
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PROPOSED
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HYDRANT
19
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30 � `f1 P PROPOSED 8 CL D1 R IN
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0 1
2s o :I F
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N
28 f
.. :� il WS PROPOSED 1 COPPER WATER SERVICE
18 /7 QS SMH -1 PROPOSED. SEWER MANHOLE
25 35 PVC) Q ,
26 _� ' r PS PROPOSED SEWER MAIN F'
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REACH C
HART.
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REACH LENGTH SIZE A .� f
MATERIAL SLOPE BEG r
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R1
21' I
12'° ''
HDPE
0.01'
176.13'
175.92'
R2
10' f
12"
HDPE
0.01' ':
176.02'
175.92'
R3
2'
12"
HDPE
0.00'
175.67'
175.67'
R4
2' %`
112
HDPE
0.00
175.67
175.67`
R5
21'
12"
HDPE
0.01'
175.88'
175.67'
R6
16'
12"
HDPE
0.01'
175.93 :
17577
R7
12'
12"
HDPE
0.01'
777.26'
177.14'
R8
12' j
12"
HDPE
0.01'
177.26'
177.14'
R9
112' j
12"
HOPE
0.01'
177.04'
175.92,
ALL
13
11'
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CONSTRUCTION N OT E S. I 1
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6 v THE PROPOSED. DR SHOWN SHALL HAVE A MINIMUM
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� T TO PRO O T STORAGE.
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OF 12 - CRUSHED STONE BENEA H MOTE ST RMWA ER
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2. ALL UTILITY CONSTRUCTION WILL MEET TO W N S T ANDARDS lNC LUDING '
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� THE SUPPLY OF SUFFICIENT WATER PRESSURE TO THE UNITS WH1.N COMPLETED.'
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WILL NG GE A FIRE PRO ION ENGINEER O ETERMIN
J. THE DEVELOPER W E A R R CT E 1NEE T. D E
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• N e ,.. Transformer WATER SYSTEM PRESSURE A T HIGH POINTS IN THE D EV EL D PME N AND PROVIDE
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WRITTEN RE S UL TS TO THE LEXINGTON ENGINEERING EP AR THE N T PRl O R T O
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,. � . .. ISSUANCE OF AN OCCUPANCY P RMIT.
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' IN THE: LEXINGTON ENGINEERING MEMORANDUM DATED 212412016
vW 4. ALL REQUIREMENTS 1 1, . �
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1 OM / C AND FORCE MAIN SHALL BE MET AT THE TIME SEWER PERMITS RE APPlED FOR.
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yl / PROPOSED DRIVEWAYS SHALL COMPLY WITH TOWN ENGINEERING .STANDARDS
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TEMF'ORAR Y BENCHMA C 2$ -r- li
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DESCRIPTION
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_ ELECT lC MANHOLE RIM
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. ti � Q� UTILITY NOTES. .
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Cond. Sidewalk T
- EACH UNIT TO HAVE -A 1 TYPE K (WATER SERVICE.
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f 9 iP v 2) EACH UNIT TO HAVE _A,4 SDI 35 PVC GRAVITY SEWER SERVICE
2
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e MIN. SLOPE OF 2% TO THE GRAVITY MAIN.
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Ga _..: � � 10 I I I
P 3) THE WATER AND SEWER SERVICES TO BE A MIN. 10 FEET APART
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o v 4) THE GRINDER PUMP ST, A I O N TO B E EQUIPPED WI TH THREE
GRINDER
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W$
SEWER STRUCTURE CHART- n o PUMPS WITH SUFFICIE N T RE S ERVE CAPACITY FOR 1 DAY FLOW.
1
: PSS: m,
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H T D SEWAGE FLOW. FROM .SITE. 52 BDRMS X 110 GPD - -5 720 GPD
- 5) ANTICIPA E
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'STRUCTURE
3
RIM M IN IN SIZE YPE l V OUT SIZE T E
( �T ) N ( / YP) o 6 HOMEOWNERS AS.SOCATION RESPONSIBLE FOR SEWER MAIN, SEWE R �Pws
- 7 173.52 B PG 173..¢2 8 PVC h C � , . INFRASTRUCTURE URE AND PUMPING STATION MAINTENANCE AND Ofd REPAIR. SMH 1 180.4
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INFILTRATION FED 2 CAD GRATES ON THE INDIVIDUAL CATCHBASINS ARE SUFFICIENT
S H_ � w � C PROP FIELD # 7 THE CAS E ` A ,
M 2 181.41 174.04 8 PVC 173.99 8 PVC 3 ) I ,
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Ta c CONSISTING OF 200 QUICK4 '
0 0 TES OF UNOFF A D VOLUME OF RUNOFF UP TO THE
`. , ,. � S 2 FOR PEAK RA R N M N
SMH -3 a s STANDARD INFILTRATOR UNITS
184.34 NIA ` 177.58 8 PVC N Ps
/ � s 100 YEAR STORM EVENT.
FIELD SIZE., 27.14 x 101
PSS --._ PWS: O
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44 N s l ------------------- - - ^ - -- 'TOWN CLERK Of THE TOWN OF
1 1 , 0, TOWN
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aAgaa ON MASSACHUSETTS HEREBY CERTIFY THAT THE NOTICE OF
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.LE�'IliTG7' ®Iii ,PLANNING BOARD a
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THIS PLAN BY THE LEXINGTON PLANNING OARD '
<: � APPROVAL -0F T L NG N Nl B
> .: Prop. Crushed Prop. Sews a '5 1
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U ..Stan Area -
F
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Grinder Pump Station AND. RECORDED AT THIS OFFICE AND - 0 .NOTICE
e toy L _ m p HAS BEEN R N
RP _ Prop. ,U x 16 Area _1 1
yy�� n� TED _ R 178.42 P
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r : CB 3 F
_ _ �. . w 3 Benches s
virt c Inv Fare son 0 APPEAL WAS RECEIVED DURING THE TWENTY DAYS NEX AFTER
DMH 1(S) ': DMH 2 . P � F
171.. .: a': +5'• Generator Pad � �. '
de round \ SUCH RECEIPT AND RECORDING OF SAID NOTICE.
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TOWN :CLERK. DATE.
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,... Stonewall to t+ .. P P 2 Y
for Utilit Access Wye,
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Prop. P. INFILTRATION-491 170N�1€LD \ �'
P PRO I TRA -_
123
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:EXISTING WATER SERVICE'TO E to be Triple Gate CONSISTING OF 99 QUICK4 --
_ ,5dTE IJTILIT�' PL,
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DAR INFILTRATOR UNIT ---_ BV
s CUT AND CAPPED. AT .WATER MNfN STANDARD
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'FIELD SIZE. 1o.4s x i33.o ° LOCATED. IN
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LEXING TO /�% MAS1�A C / U �j
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MIDDLESEX COUNTY
115
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114 ,
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\ � I 13 \ EXISTING WATER SERVICE TO BE
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1 _ PREPARED 0
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CUT AND CAPPED AT WATER MAI
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119 �Ss %t 50 �
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BUFFER - � 1oNa� CONSTRUCTION CTION Ibc DEV., .1NC
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:-118 ,i1 SCALE. 1 40 DATE. NOV. 20 2015
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P R E P
ARED BY 25 ev W eu FF ER Z1 AP ROVED 20 CI TY OF CAMBRIDGE RESERVOIR ;
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VW 100 SULLIVAN
ENGINEERING
ROUP LLC
:� B C A D ,
GRAPHIC .SCALE
P.O. BOX 2004
THIS LAN IS U JE T TO `,A COVENANT DATED
_ ...REV REVISIONS I
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SCALE. 1' OB RN, MA 01888
THIS PLAN IS SUBJECT A CERTIFICATE OF A&ION DATED
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FEET
60 _
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80 .
40 0- 0 1 0 2
THIS PLAN IS SUBJECT TO A SPECIAL - PERMIT DATED -------- _
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3/1/16
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PER `BOARD COMMENTS
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218116
PER BOARD CO IME
COMMENTS
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DESC P 10
BY
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789 8644
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SHEET No. ` OF 13 6
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