HomeMy WebLinkAboutSD-463-8!C 40
CHAMBERS SHALL MEET ASTM F 2418-09
"STANDARD SPECIFICATION FOR
POLYPROPYLENE (PP) CORRUGATED WALL
STORKWATER COLLECTION CHAMBERS".
1-112" - 2" CRUSHED,
ANGULAR STONE
AASHTO M288 CLASS 2
NON-WOVEN'GEOTEXTILE
// 77777
SC-740 ENDCAP
GRANULAR WELL GRADED SOILIAGGREGATE
MIXTURES, <W% FINES. COMPACT IN 6"LIFTS TO
ELEV=268.0±
T
ORN
MIN
ELEV=267.33
6"
Mail',
N. T. S.
MIN
FLEV.--276,00 COMPACT BASE TO A MIN. OF 95%
EST SHWT THE MODIFIED PROCTOR DENSI
ALL
ELEV=264.50
12- 1 as 34" 34" —'-1 1 12- 1 ELEV=262.5
7.1ki i --4-11-"-- n ... ol E.S.H.W.T.
P
-310 CHAMBER
A-M
CHAMBERS SHALL MEET4 S1W 2418
"STANDARD SPECIFICATION FOR
POLYPROPYLENE (PP) CORRUGATED WALL
STORMWATER COLLECTION CHAMBERS". GRANULAR WELL GRADED SOILAGGREGATE
MIXTURES, <36% FINES. COMPACT IN 6"LIFTS TO
AASHTO M288 CLASS 2 96% PROCTOR DENSITY.
NON -WOVEN GEOTEKTILE ELEV=286.5±
ly, N
12" MIN
1 1/2" 2 ELEV=285.83
CRUSHED STONE 6 1
ELEV=Z".00
X%
COMPACT BASE TO A MIN, OF 957 OF
THE MODIFIED PROCTOR DENSITY 12" 12" ELEV=281.0
34" 34 .0 - 12'` MIN E.S.H.W.T.
—,
31'
0
AASHTO M288 CLASS I WOVEN 12" MIN
GEOTEXTILE OVER FOUNDATION
STONE FOR SCOUR PROTECTION 6 UNITS
AT ALL CHAMBER INLET ROWS
OVERFLOW MANIFOLD
APPROVED BY-
LEXINGTON PLANNING BOARD
DATE
N. T. S.
"THIS PLAN IS SUBJECT TO A COVENANT DATED --------
"THIS PLAN IS SUBJECT TO A CERTIFICATE OF AC770AI DATED
"THIS PLAN IS SUBJECT TO A SPECIAL PERMIT DATED — ---------
PLANNING BOARD HAS BEEN RECD
THIS OFFICE AND NO N077CE OF Aj
DURING THE TWENTY DAYS NEXT A
RECORDING OF SAIDWOTICE.
TOW CUERK
OWNERS.
ROBERT O. & GERTRAUD K. BRADLEY
15 ROCKMLE AVENUE
LEXINGTON, MA 02420
DEED BOOK 76 7, PAGE 51
LEXINGTON ASSESSOR MAP 15; PARCEL 15
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ICH RECEIPT AND
ApIA
DA �E
LLAHAN, TRUSTEE
TRUST
IN ROAD
1A, 02451
1368; PAGE 96
ASSESSOR MAP 15; PARCEL
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