HomeMy WebLinkAboutEngineer Plans - 1997NOT TO SCALE
OL® TOWN HOUSE ROA®
i
LEACHING TRENCH
3-90' LONG LEACHING TRENCHES
BOTTOM OF TEST HOLE OR U pGS
ADJUSTED GROUND WATER EL�VA
DATE: JANUARY 28, 1997 BY: JDK HEALTH DEPT.: PETER SWANTON
Tccr Uni r 1 P_CF:L 9
DEPTH FROM
SURFACE
(INCHES)
SOIL HORIZON
SOILTEXTURE
(USDA)
SOIL COLOR
(MUNSELL)
SOIL MOTTUNG
OTHER
(STONES, ETC)
0-3'
0
ORGANIC
-------
N/A
10YR5/1
3'-10"
A/E
SANDY LOAM
10YR5/1
Cl FINE TO MED.
2.5Y7/3
10'-32'
B
LOAMY SAND
10YR5/4
C2 COMPACT
2.5f6/1
VERY FINE
SAND
207 GRAVEL.
32'-7M1
Cl
MED. SAND
2.5Y7/3
AT ST
FED LAYER
74-132'
C2
FINE TO MED.
2.5/8/2
AT 74
SAND
NO
GROUND WATER ENCOUNTERED AT 13' pmt, 23.2 PERC AT 48"-B6"
RATE= <2 MIN/IN
DESIGN CALCULATIONS:
DESIGN FLOW:
PUBLIC PARK, TOILET WASTE
120 PARKING SPACES x 2 PEOPLE EACH=240 PEOPLE
240 PEOPLE x 5 GPD PER PERSON = 1200 GPD
SEPTIC TANK REQUIRED = 1200 GPD x 200%=2400 GAL
ACTUAL SEPTIC TANK SIZE = 2500 GAL
LEACHING REQUIREMENTS:
AREA= 3 x [90 x (2+2+4)] x 0.74 = 1598 GPD
RESERVE AREA= 1598 GPD
TEST HOLE 2 GSE -34.7
5' MIN
NT
OF PEASTONE
111110IIIIIIIIII
io R=
3/4!'---
3/4° TO 1-1/2° WASHED STONE
6.7 ACTUAL
22.2
DEPTH, FROM
SURFACE
(INCFjES)
SOIL HORIZON SOILTEXTURE
(USDA)
SOIL COLOR SOIL MOTTLING _SER
MUNSELL) ( STONES. ETC)
0-5
0 ORGANIC
------ N/A
A/E SANDY LOAM
10YR5/1
18'-3jr
B LOAMY SAND
t0YR5/4
36'-144
Cl FINE TO MED.
2.5Y7/3
SAND
144-'5d'
C2 COMPACT
2.5f6/1
VERY FINE
SAND
NO
GROUND11WATER ENCOUNTERED AT 155 ELEV. 22.2
NOTES:
1. SEPTIC SYSTEM SHALL BE INSTALLED ACCORDING TO
310 CMR 15.000 (TITLE V) AND THE TOWN OF YARMOUTH
BOARD OF HEALTH REGULATIONS.
2. ALL PIPES SHALL BE 4' SHEDULE 40 PVC EXCEPT FOR THE
BUILDING SEWER WHICH SHALL BE 4" CAST IRON.
3. THE DISTRIBUTION BOX SHALL BE WATER TESTED TO INSURE
LEVELNESS AND EQUAL FLOW.
4. ALL COVERS TO SEPTIC SYSTEM UNITS SHALL BE BROUGHT TO
FINISHED GRADE AND SHALL BE HEAVY DUTY CAST IRON.
5. THE OWNERS ENGINEER SHALL INSPECT AND CERTIFY SYSTEM
CONSTRUCTION AND FINAL GRADING.
6. THE CONTRACTOR SHALL CALL DIGSAFE PRIOR TO CONSTRUCTION.
LEGEND
--36--
36
36x0
+ 36.0
is
EH
EXISTING CONTOUR
PROPOSED CONTOUR
EXISTING SPOT GRADE
PROPOSED SPOT GRADE
TEST PIT
UTILITY POLE
CATC H BAS I N