HomeMy WebLinkAbout23 Iroquois Blvd - Septic System 4GENERAL NOTES:
1. THIS PLAN IS FOR THE DESIGN AND CONSTRUCTION
OF THE SEWAGE DISPOSAL SYSTEM ONLY.
2. VERTICAL DATUM IS ASSUMED. FOR BEECH MARKS
SET. SEE SITE PLAN.
J. ALL CONSTRUCTION METHODS AND MATERIALS AND
MAINTENANCE OF THE SEPTIC SYSTEM SHALL
CONFORM TO MASS. D.E.P. TITLE 5 AND LOCAL
BOARD OF HEALTH REGULATIONS.
4. ALL SEPTIC SYSTEM COMPONENTS LOCATED UNDER
AREAS SUBJECT TO VEHICULAR TRAFFIC OR GREATER
THAN 3' IN DEPTH SHALL BE CAPABLE OF WITH-
STANDING H-20 WHEEL LOADS.
S. ALL SEWER PIPE SHALL BE SCHEDULE 40 OR
APPROVED EQUAL.
6. SEPTIC TANK AND D -BOX SHALL BE REINFORCED
PRECAST CONCRETE AND WATERTIGHT.
7. EXISTING INVERT AT THE BUILDING TO BE RAISED
TO THE ELEVATION SHOWN.
6. BEFORE CONSTRUCTION CALL 'DIG -SAFE'.
1 -888 -DIG -SAFE AND THE LOCAL WATER DEPT.
FOR LOCATION OF UNDERGROUND UTILITIES.
9. EXISTING CESSPOOL TO BE PUMPED DRY AND
BACKFILLED.
I0. ALL UNSUITABLE MATERIAL (A d B HORIZONS)
ENCOUNTERED BELOW THE INVERT OF THE LEACHING
FACILITY TO BE REMOVED FOR A DISTANCE OF 5'
AROUND AND REPLACED WITH SAND IN ACCORDANCE
WITH TITLE 5.
11. THE ENTIRE LOT FALLS WITHIN FLOOD ZONE B.
ACCESS COVERS MUST BE WITHIN 9' MINIMUM.
6' OF FINISH GRADE 3' MAXIMUM COVER
103.33 FIRST 2' TO
BE LEVEL MIN 2' OF PEASTONE
iJ 4- VIAM PIPE -7- 3/4' - 1 1/2' DIA.
102.37 6 T 101.9 101.7 d4 7- $. WASHED STONE
102.15 +� 101.87 101.68_ _0 01
3 OUTLET 5 STANDARD INFILTRATOR
D -BOX CHAMBERS W/3.S't STONE AROUND
1500 GAL !0'• X 38'I X 7'd
$EPTIC TANK 6' CRUSHED STONE BASE
PROF/ L E: NOT TO SCALE
SOIL REWYAL
100.6 r SEE NOTE 10.
i
LOT 18
13093 t S.F.
INVERT ELEVATIONS:
INVERT AT BUILDING:
102.37
INVERT IN SEPTIC TANK:
102.15
INVERT OUT SEPTIC TANK:
101.9
INVERT IN DIST. BOX:
101.87
INVERT OUT DIST: BOX:
101.7
INVERT IN LEACH CHAMBER:
101.68
BOTTOM LEACH CHAMBER:
101.1
ADJUSTED GROUND WATER+
97.1
OBSERVED GROUND WATER:
95.4
BOTTOM OF TEST HOLE •l: 93.1
INDEX WELL M1W 29. ZONE A
MAY 99 READING -8.3'. AD✓ -1.7'
N
DESIGN CRITERIA:
DESIGN FLOW:
3 BEDROOMS AT I10 G.P.D. PER
BEDROOM EQUALS 330 G.P.D.
NO GARBAGE GRINDER
SEPTIC TANK REQUIRED:
330 G.P.D. X 200% - 660 GAL.
SEPTIC TANK PROVIDED: 1500 GAL. MIN.
SOIL ABSORPTION SYSTEM REQUIRED:
DESIGN PERC RATE ! 5 MIN/INCH
SOIL TEXTURAL CLASS - 1.
EFFLUENT LOADING RATE - 0.74 GPD/SF
330 GPD / 0.74 GPD/SF - 446 S.F. REQUIRED
PROVIDED: 5 STANDARD INFILTRATOR
CHAMBERS W/4'f STONE AROUND. A-447 S.F.
447 S.F. x 0.74 - 33/ GPD
SOIL TEST PIT DA TA
INDICATES INDICATES
PERCOLATION OBSERVED
TEST GROUNDWATER
TP �l
0' HORIZON TEXTURE COLOR 100.1
A LOAMY IOYR
SAND 3/2
! 1 ' .... ....... ......... ..... .......... 99.2
8 LOAMY IOYR
SAND 4/6
/B ................ .......... ............... 98.6
C l MED COARSE 7.5YR
SAND 5/8
4?'
�44' ........ 96.4 ...C2••.. . MEDIUM IoY.Q
SAND 5/6 -