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DATUM ELEV
185.00
PROP, DWELUNG
SIZING OF LEACHING PIT:
USING RATIONAL METHOD (Q =ciA)
C =0.9 FOR ROOF
A =3000 SF
i =(FROM 1 -D —F CURVE)
GIVEN SOIL TYPE: CANTON (HYDROLOGIC CLASSIFICATION "B "),
ASSUME PERCLOATION RATE OF 30 MIN /INCH.
30 MIN /INCH = 0.0028 FT /MIN
ASSUME VOID RATIO OF CRUSHED STONE = 0.35
STORAGE CAPACITY: VOLUME OF STRUCTURE 1000 GAL =134 CF
VOLUME OF STONE:.
SIDES (7T102— 7[42)X3.5 = 924 CF
923 CF X 0.35 = 323 CF
BOTTOM (7T102X 1.5) = 471 CF
471 CF X 0.35 = 165 CF
TOTAL STORAGE VOLUME = 622 CF
.LEACHING AREA: SIDES 21T10 X 5 = 314 SF
BOTTOM 7[102 = 314 SF
TOTAL LEACHING AREA = 628 SF
EXFILTRATION RATE: 628 SF X 0.0028 FT/MIN = 1.76 CF /MIN
04. 31A
DISMIM KAZAZIAN PROPERTY
df'
�I 113/115 CONCORD AVE, LEXINGTON, MA
6' OF 2' DIAN. CRUSHED STEM \
PLAN weX
ELEV= 205.0±
�1 1 90 11111GREES APART
PLAN
$CALE:1 " =30'
0 +00 1 +00 2 +00
PROFILE,
SCALE:1 " =30' (HOR.)
1 " =3' (VER.)
s
1 1/2" wearing surface
1 1/2" binder course
/ Existing Subgrade
L Compacted Gravel Base
(8" minimum required)
DRIVEWAY.a1QEW_ ALK EA'VEMENT DETAIL
N.T.S.
OUNING --
b
.n r CORP. STOP
WATER
TYPE 'M COPPER
SERVICE
— STANDARD VALVE BOX
AND COYER IN SIDEWALK
04AE NO PAVED SIDEWALKS
GIST palls STOPS AND VALVE
BOXES TO LE INSTALLED IN
STHEET-
-CURB STOP
TO BUILDING
SERVICE
3' -5'
\�
rn-
I
j I
X
STORM DURATION
RUNOFF VOLUME
STRUCTURE CAPACITY
ADDITIONAL
(100 YEAR)
FROM DWELLING
(STORAGE +LEACHING CAPACITY)
STORAGE CAPACITY
0 _ \
30 MIN (3.$ IN/HR)
428 CF
622 + 53 = 675 CF
247 CF
-O/X�SO�\ /�
/O�
/
60 MIN (2.7 IN /HR)
608 CF
622 + 106 = 728 CF
120 OF
V
.00
Ile
6 HRS. (0.8 IN /HR)
1080 CF
622 + 634 = 1256 CF
176 CF
\��% /
//
/
24 HRS. (0.3 IN /HR)
1620 CF
622 + 2534 = 3156 CF
1536 CF
�\
Z
X / p
2 x�0�������� -�1k�
��. /
DDRIVEWAY 100
PLAN
$CALE:1 " =30'
0 +00 1 +00 2 +00
PROFILE,
SCALE:1 " =30' (HOR.)
1 " =3' (VER.)
s
1 1/2" wearing surface
1 1/2" binder course
/ Existing Subgrade
L Compacted Gravel Base
(8" minimum required)
DRIVEWAY.a1QEW_ ALK EA'VEMENT DETAIL
N.T.S.
OUNING --
b
.n r CORP. STOP
WATER
TYPE 'M COPPER
SERVICE
— STANDARD VALVE BOX
AND COYER IN SIDEWALK
04AE NO PAVED SIDEWALKS
GIST palls STOPS AND VALVE
BOXES TO LE INSTALLED IN
STHEET-
-CURB STOP
TO BUILDING
SERVICE
�IIRA71I N01 7' To 2 1/e' DIA TAM �....t._
ELEV =199.0f
sa.TaN VIEW
M1113:
1. Te 5AM PS INNUM AFTER ss oAYS COMMERCIAL LINE
F. NU� FOR 11-211 LasaN� DRY WELL CYLINDRICAL
1000 GALLON
6' OF 2' DIAN. CRUSHED STONE
Crow country areas
Loam k seed, as specified
Suitable backfill to be placed
and compacted In 1 foot layers.
Wood sheeting, if required, shall be
cut off at -least five (5) feet below
street grade and one foot above the
crown of the pipe.
N.T.S.
ELEV = 195.0±
O O
3' -5'
\�
rn-
#QOCO�
�IIRA71I N01 7' To 2 1/e' DIA TAM �....t._
ELEV =199.0f
sa.TaN VIEW
M1113:
1. Te 5AM PS INNUM AFTER ss oAYS COMMERCIAL LINE
F. NU� FOR 11-211 LasaN� DRY WELL CYLINDRICAL
1000 GALLON
6' OF 2' DIAN. CRUSHED STONE
Crow country areas
Loam k seed, as specified
Suitable backfill to be placed
and compacted In 1 foot layers.
Wood sheeting, if required, shall be
cut off at -least five (5) feet below
street grade and one foot above the
crown of the pipe.
N.T.S.
ELEV = 195.0±
O O
3' -5'
\�
17' To s yr VIA TAPER ...�
5'
ELEV= 189.0±
somm vier
Nam:
1. 001110RM MW PSI wYw AM 25 W& COMMERCIAL LINE
P sr�LSram FOR 11-01) LOOM DRY WELL CYLINDRICAL
1000 GALLON
N.T.S.
Paved areas
Pavement and base, as specified
Existing ground
Compacted stone or sand to one
foot above the crown of pipe
Ij pipe
1- `— ±,edge
Pipe bedding consisting of 1/2 to 3/4 inch stone or sand
backfill to be placed against undisturbed sides and bottom
of trench.
Provide at least one clay dam or other -
impervious material seal between manholes
Excavation in earth Excavation in ledge
SEWER TRENCH DETAIL
N.T.S.
LEXINGTON PLANNING BOARD
IN ACCORDANCE WITH A CERTIFICATE OF ACTION DATED
AND RECORDED HEREWITH
IN ACCORDANCE WITH A COVENANT DATED
AND RECORDED HEREWITH
IN ACCORDANCE WITH A SPECIAL PERMIT DATED
AND RECORDED HEREWITH
r,
DEFINITIVE KAN SUBMISSION
Ref.: (7,4.5.14 "Frontage Reduction in
Small Subdivisions"
Pion &Profile/
Construction Detall
OWNER(S):
GEORGE B. & ANAHID KAZAZIAN
115 CONCORD AVENUE, LEXINGTON, MA 02173
PROJECT TEAM:
GUIDELINES. INC. PLANNER
4B DAMONMILL SQUARE, CONCORD, MA 01742
FREDERICK W. RIUS$ELLv PE ENGINEER
154 ALDRICH ROAD', WILMINGTON, MA 01887
JAMES R. KEENAN, PLS SURVEYOR
8 WINCHESTER PLACE, WINCHESTER, MA 01890
7
SCALE: AS SHOWN., DATE: OCTOBER 7, 1998, SHEET NO.
REVISED: JAN. 25, 1999; APR. 23, 1999
REVISED: JUNE 4, 1999