HomeMy WebLinkAboutEngineer PlanGENERAL NOTES:
A. CONTRACTOR SHALL NOTIFY "DIG -SAFE" AS REQUIRED PRIOR TO THE START OF ANY
EXCAVATION WORK. CONTRACTOR IS RESPONSIBLE FOR PROTECTING UTILITIES WITHIN THE
WORK AREA DURING CONSTRUCTION.
B. CONTRACTOR TO VERIFY EXISTING CONDITIONS, INCLUDING ELEVATIONS OF EXISTING BUILDING
SEWER, AND REPORT AND DISCREPANCIES TO THE DESIGN ENGINEER PRIOR TO THE SETTING
Of ANY SEWAGE DISPOSAL SYSTEM COMPONENTS.
C. CONTRACTOR SHALL DETERMINE THE LOCATION OF EXISTING UNDERGROUND UTILITIES PRIOR TO
EXCAVATION.
D. ALL CONSTRUCTION SHALL CONFORM TO THE STATE SANITARY REGULATIONS (310 CMR 15.00)
AND ALL OTHER APPLICABLE LOCAL, STATE, AND FEDERAL CODES AND REGULATIONS.
E. PROPERTY IS LOCATED WITHIN FLOOD ZONE AE EL=11 PER FEMA MAP PANEL 25001C0589J.
SEWAGE DISPOSAL SYSTEM NOTES:
1. H-20 RATED COMPONENTS SHALL BE REQUIRED IN ANY AREAS SUBJECT TO VEHICULAR
LOADING AND AS REQUIRED ON THE PLAN.
2. THE DESIGNER WILL NOT BE RESPONSIBLE FOR THE SYSTEM AS DESIGNED UNLESS
CONSTRUCTED AS SHOWN. ANY CHANGES OR DEVIATIONS FROM THIS PLAN MUST BE
APPROVED IN WRITING.
3. ALL GRAVITY SEWER PIPE SHALL BE 4" DIA. SCH 40 PVC UNLESS OTHERWISE NOTED, THE
MINIMUM SLOPE OF 4" DIA. SCH 40 PVC SHALL BE 0.01 FT/FT.
4. SOIL ABSORPTION SYSTEMS MUST BE VENTED WHEN DISTRIBUTION LINES EXCEED 50 FEET IN
LENGTH, WHEN LOCATED IN AREAS SUBJECT TO VEHICULAR LOADING, AND WHEN PRESSURE
DOSED.
5. FINISHED GRADE SHALL BE A MAXIMUM OF 36" AND A MINIMUM OF 9" OVER THE TOP OF ALL SAW CUT EXISTING SIDEWALK
SYSTEM COMPONENTS. (SEE NOTE #12)
6. ALL SEPTIC SYSTEM COMPONENTS, FOR UNIT #2, SHALL BE PUMPED DRY REMOVED, AND AREA
FILLED IN WITH CLEAN SAND.
7. CONTRACTOR SHALL PROTECT ALL EXISTING SEPTIC COMPONENTS FOR UNIT #1. CONTRACTOR
SHALL EXPOSE THE EXISTING LINE FROM THE SEPTIC TANK TO LEACH PIT, PRIOR TO THE
INSTALLATION OF ANY NEW SEPTIC COMPONENTS, TO CONFIRM THERE ARE NO CONFUCTS WITH
THE NEWLY PROPOSED SEPTIC INSTALLATION. IF THE EXISTING LINE IS IN CONFLICT WITH THE
PROPOSED SEPTIC DESIGN THE CONTRACTOR SHALL NOTIFY THE ENGINEER AND LINE WILL BE
RELOCATED AS NEEDED.
EXISTING HEDGE AND TREE
8. COMPONENTS TO BE PROVIDE WITH WATERTIGHT ACCESS COVERS RAISED TO WITHIN 6" Of TO BE REMOVED
GRADE WHERE REQUIRED.
9. PRIOR TO FINAL INSPECTION BY THE ENGINEER AND THE BOARD OF HEALTH ALL SYSTEM
COMPONENTS MUST BE INSTALLED INCLUDING ALL ACCESS COVERS WITH RISERS.
10. SOIL REMOVAL: ALL FILL AND SUBSOIL (B LAYER) SHALL BE REMOVED FROM THE FOOTPRINT WORK AREA PLAN
OF THE LEACH FIELD ONLY (PER YARMOUTH BOARD OF HEALTH REQUIREMENTS) DOWN TO THE SCALE: 1" = 10'
CLEAN SAND LAYER, LAYER Cl, APPROX. 33" BELOW GRADE. AREA TO BE BACKFILLED WITH
CLEAN "TITLE 5" SAND AND COMPACTED TO MINIMIZE SETTLING. CONTRACTOR TO NOTIFY TOWN
AND/OR ENGINEER TO VERIFY SOIL REMOVAL AS REQUIRED. 0 10 20 30
11. PROPOSED LINER: INSTALL A 40 mil HDPE LINER FROM EL=8.7t TO EL=8.0 AS SHOWN ON
PLAN AND SAS DETAIL. SCALE 1 "=10'
12. EXISTING SIDEWALK TO BE PROTECTED DURING CONSTRUCTION. IF SIDEWALK IS DISTURBED IT
SHALL BE SAW CUT AND AREAS DISTURBED REMOVED. SIDEWALK SHALL BE REINSTALLED WITH
AN 8" PROCESSED GRAVEL SUBBASE AND PAVED WITH 3" (DONE IN TWO 1.5" LIFTS) USING
MASSOOT #9.5 ASPHALT JOB MIX FORMULA
13. EXISTING PARKING LOT TO BE SAW CUT AND REMOVED AS NEEDED FOR SEPTIC INSTALL.
PARKING LOT SHALL BE REINSTALLED WITH AN 8" PROCESSED GRAVEL SUBBASE AND PAVED
WITH 3" (DONE IN TWO 1.5" LIFTS) USING MASSDOT #12.5 ASPHALT JOB MIX FORMULA
14. PROPOSED 2" FORCE MAIN TO BE INSTALLED AS SHOWN ON THE PLAN TO ALLOW FOR
FUTURE INSTALLATION OF LEACHING FIELD FOR UNIT #2.
PUMP NOTES & REQUIREMENTS:
1.) ALARM SHALL BE A RED WARNING LIGHT WITH AUDIBLE ALARM LOCATED WITHIN THE
BUILDING AS SHOWN ON THE PLAN.
2.) THE CORDS FOR THE FLOATS SHALL BE ONE CONTINUOUS PIECE FROM THE PUMP CHAMBER
TO THE DISCONNECT PULL BOX. THE CORDS SHALL BE ENCASED IN 3" ELECTRICAL CONDUIT.
3.) ALARM AND PUMP TO BE WIRED TO DIFFERENT CIRCUITS.
4.) ALL PUMP, WIRING, ALARM, AND FLOAT INSTALLATIONS SHALL CONFORM TO MASSACHUSETTS
STATE PLUMBING AND MASSACHUSETTS STATE ELECTRICAL CODES AS WELL AS TO
MANUFACTURER'S SPECIFICATIONS.
5.) PUMP SHALL BE LIBERTY LE41A SERIES T� PUMP (OR EQUAL) MEETING MAXIMUM
REQUIREMENTS OF 19.9 GPM AND 10' OF TOTAL DYNAMIC HEAD, INSTALLER TO VERIFY PUMP
WITH MANUFACTURER FOR FLOW AND TDH.
6.) 28 J"" FROM PUMP ON FLOAT TO INLET INVERT PROVIDES 323 GALLONS OF STORAGE.
PUMP DOSING CALCULATIONS:
1. DETERMINE VOLUME OF EFFLUENT TO BE PUMPED TO LEACHING PROPOSED FLOW BARRIER J
FI ELD:
(SEE NOTE #11)
DAILY FLOW = 220 GAL
NUMBER OF DOSES PE AY = 10 DOSES" PERFORATIONS
NUMBER OF GALLONS Y
/10 = 22 GPD W/ ORENCO SHIELDS
DRAIN BACK VOLUME:
2" FORCE MAIN = 14 GALLONS 5' SOIL REMOVAL
PUMPING VOLUME = DOSING VOLUME + DRAIN BACK VOLUME (SEE NOTE #10)
PUMPING VOLUME = 33 GALLONS + 14 GALLONS = 47 GALLONS (min)
2. DISCHARGE RATE:
17 TOTAL PERFORATIONS (INCLUDING VENTS) x 1.17 GPM / PERF. ® PROPOSED INSPECTION PORT
2.5' HEAD = 19.9 GPM
3. TOTAL DYNAMIC HEAD: 10 FT.
4. PUMP MUST BE CAPABLE OF PUMPING AT LEAST 19.9 GPM PROPOSED VENT --""
AGAINST A TOTAL DYNAMIC HEAD OF 10 FT
SCHEMATIC FLOW PROFILE:
INOT TO SCALE
RAISE COVER
TO GRADE WITH MIN. 24" -
POLYLOK HEAVY DUTY (SCREW
DOWN WITH GASKET) AND A
RAISE COVER MIN 24" PLASTIC RISER
TO WITHIN 6" OF /
FINISH GRADE -7 FINISH GRADE=10.5t
9.5f
Check
Valve
DROP: 2' min.
Gate Valve
3" max.
3/8" Bleeder
10"
48"
GAS BAFFLE
Hole
*B.Ot
*SEE NOTE
7.75
3.3t PROPOSED 2000 GALLON
LOW PROFILE 2 COMPARTMENT
SEPTIC TANK/PUMP CHAMBER
(H-20)
TANK SHALL BE WATERPROOFED ON THE OUTSIDE
SAS DETAIL
DEEP OBSERVATION HOLE LOGS
NO SCALE
DEEP OBSERVATION HOLE 1 EL. = 9.0t
DEPTH FROM
SURFACE
SOIL
HORIZON
SOIL
TEXTURE
SOIL COLOR
MUNSELL
0" - 20"
FILL
- - -
- - -
20" - 33"
B
LOAMY SAND
10 YR 5/8
33" - 100°
C1
MEO-COARSE
10 YR 8/6
SAND
DATE OF TESTING: 11 /2/22
PERCOLATION RATE: LESS THAN 2 MIN/INCH (PERC IN C1 LAYER IN TP#1)
WITNESSED BY: KEITH E. FERNANDES, PE, DIG -IT CONSTRUCTION, LLC.
JAY GARDINER, ASSISTANT HEALTH DIRECTOR, YARMOUTH HEALTH DEPARTMENT
GROUNDWATER STANDING @ 88" BELOW GRADE (EL=1.67) IN TP#1
USE A LOADING RATE OF 0.74 GPD/SF FOR SIZING OF SOIL ABSORPTION SYSTEM.
PROPERTY LINE INFO:
1. PROPERTY LINES AND BUILDING LOCATIONS PER
CONDO SITE PLAN DATED 7/31 /1981 ON FILE AT THE
BARNSTABLE COUNTY REGISTRY OF DEEDS.
EXISTING SEPTIC INFO:
1. EXISTING SEPTIC COMPONENTS FOR LOTS 2-10 PER
PLAN BY BSC GROUP DATED 9/25/2014 ON FILE AT
THE YARMOUTH BOARD OF HEALTH.
2. EXISTING SEPTIC COMPONENTS FOR UNIT #1 PER
SEPTIC INSPECTION REPORT DATED 1-25-16 BY B&B
EXCAVATION ON FILE AT THE YARMOUTH BOARD OF
HEALTH.
TIMBERS SHALL BE INSTALLED SO
BUTT JOINTS ON LOWER ROW ARE
OVERLAPPED BY TIMBERS ON TOP ROW
-8" LONG TIMBER LOCK SCREWS DETAIL OF VENT ACCESS CAP
INSTALLED 2' ON CENTER AND WITHIN
1' OF ENDS/OVERLAPS NOT TO SCALE
_---PROPOSED 6" X 6" TIMBER WALL
(3) ROWS ABOVE GRADE
Finish Grade
7PROPOSED 6" X 6" TIMBER
SOLDIERS TO BE INSTALLED
-8- ON CENTER (MAX), WITHIN 2' 4" DIA. NDS ROUND
OF CORNERS, AND OF 2.5' BELOW IRRIGATION BOX COVER
GRADE (MIN). SEE DETAIL FOR LOCATION. 1" Screw -on Cap
in I 1" PVC Access Pipe
{� I N
PERFORATED PIPE CONNECTED TO VENT LINE
SCALE 1" =20' & CAP BY "SWEET AIR" (MUSHROOM CAP) EXISTING GRADE
2" MANIFOLD \ J
�I
N (1) ROW OF TIMBERS TO BE BURIED BELOW GRADE
CT
AS IJ I
I I NUMBER PERFORATIONS PER LATERAL =
I I I 2) OUTSIDE LATERALS NTH 6 (INCLUDING VENT)
I u? I �
1) MIDDLE LATERAL WITH 5 (INCLUDING VENT)
PERFORATION SIZE = 1/4"
I I N PERFORATION SPACING = SEE SAS DETAIL
I I v: LATERAL LENGTH = 25'
I I'cr I NUMBER OF LATERALS =3
I u? LATERAL DIAMETER = 1"
WORK AREA PLAN
SCALE: 1 " = 10'
PROPOSED FORCE MAIN
(SEE NOTE #14)
BENCHMARK Gott
CUGt
CL CATCH or�tie 9 ��
BASIN RIM V et\co\ de�o\k
EL = 8.2t f a
ore
(NAVD88)
TP 1
2.6't
Existing Septic
Components - UNIT #2
(See Note#6)
O fa
t i \
d P otk�r9
/� p o`je
/ ROOM ER PROPOSED TIMBER \
- 2 PREP 1� \ WALL \
PRO GPa
PROPOSED SEPTIC N
rn'
TANK/PUMP CHAMBER
Existing Septic
Components - UNIT #1 // 2
(See Note#7) vN\�
Cn � \ I I ✓
18.2 f
vN\� P� SP PGE;
vOs OR
<SNP�
I
X tz U
0 ik
Y'r
�a�er
�i
PROPOSED SEPTIC TANK TIMBER WALL LAYOUT
TIMBER WALL
SCALE 1 " =10'
ST - TOP OF WALL EL=10.5t
PROPOSED GRADE
•
PROPOSED °
TIMBER "SOLDIER"
\A- �o
PASSIVE VENT LINES:
THREE (25't) OF SCHEDULE 40
3/4"-1-1/2" Stone Base
Fill
1" Dist
teral
SYSTEM DESIGN CALCULATIONS:
DESIGN FLOW:
EXISTING 2 BEDROOM DWELLING AT 110 GAL. PER DAY PER BEDROOM = 220 GPD
220 GPD X 200% = 440 GALLONS - USE 2000 (2) COMPARTMENT MONO SEPTIC TANK/PUMP CHAMBER (1500
GALLON SEPTIC TANK do 500 PUMP CHAMBER)
SAS AREA: A 25' L. X 12' W. X 0.5' D. LEACHING FIELD CAN LEACH:
Vt = [(25 X 12)] X 0.74 GPD/SF = 222 GPD
A GARBAGE DISPOSAL IS NOT PERMITTED WITH THIS DESIGN.
INSTALL:
ONE (1) - 2000 GALLON LOW PROFILE SEPTIC TANK/PUMP CHAMBER (USE ACME/SHOREY STPC202LP)
TANK SHALL BE WATERPROOFED ON THE EXTERIOR
ONE (1) - 25' X 12' X 0.5' LEACHING FIELD
ONE (1) - LIBERTY LE41A 4/10HP PUMP WITH CONTROL PANEL, FLOATS, AND ALARM
ENTIRE PROPERTY IS LOCATED WITHIN
AN AE FLOOD ZONE (EL-11) PER
FEMA MAP PANEL 25001C0589J
KEY MAP
SCALE: 1 " = 30'
7,
1/4" Vent Hole with "ORENCO" Shield
90' Bend
IT,�
/4" Perforation with "ORENCO" Shield
Leach Field
I II PERFORATIONS
0 ORENCO SHIELDS INSTALLED (O O CLOCK
OVER THEM ANDHAVESECTION A -A'
CROSS-SECTION OF DELIVERY LINE / MANIFOLD CONNECTION
> I I I NOT TO SCALE 4" PVC PERFORATED VENT PIPE (TYPICAL)
LT:
I
PERFORATION AT VENT ACCESS CAP
(SEE DETAIL) 4" SCH. 40 PVC
4" Sch. 40 PVC Vent Pipe
INSPECTION PORT (Passive Vent) by "Sweet Air"
W/ 18" PIECE OF #4 REBAR
4' 2 RAISE TO WITHIN 3" OF GRADE Vent Access Cap
2' 4' at end of each Lateral
PIPE SHALL BE PERFORATED
A(SEE DETAIL)
I-
12 WITHIN FIELD 2" MANIFOLD, CAPPED END
Proposed EL=9.5 (min) `�t
\c° 3„
I�I min
1" Distribution Laterals 9 Proposed
2" Manifold to be below 8.7t (9' Min - 36" Max)
lateral invert as shown. I
�\/�THRUST BLOCKS TO
BE INSTALLED
AT EVERY BEND
�2" Delivery Line
Pitch 2" dia.
Force Main
tz Back to the
Pump Chamber
CLASS 150 Pressure Pipe with
Pitch 2" dia. 1 CF of concrete behind bends for
Force Main thrust blocking (Typical)
Back to the
Pump Chamber
78'f
LAYER OF FILTER FABRIC
�------------ - --------------- ; --I -------------
6„ ; i i 3/4„ - 1-1/2" STONE
A 7.8f t
25' Distribution Lateral *4.1't - *SEE VARIANCE REQUEST
ONE (1) 25' x 12' x 0.5'
V-EL=3.7f ESTIMATED SEASONAL HIGH
LEACH FIELD
• ,0' GROUNDWATER - PER VARIANCE REQUEST
2" Delivery Line to 2" Manifold-i-V-EL=1.7t OBSERVED GROUNDWATER
(3) 1" Laterals with 1/4" Burr -free Perforations I(see IN TEST PIT #1 11/2/2022
SAS detail for spacing)
Drilled at the 11: 00 and 1: 00 positions Each 1/4"
Perforation Capped with "ORENCO" Splash Guard
1/4" Vent Holes drilled below 90' bend at each end
of each Lateral
(3) 1 PVC DISTRIBUTION
LA RALS (TYPICAL)
)YANCY CALCULATIONS:
2000 GALLON SEPTIC TANK/PUMP CHAMBER
Fe� _ (13' X 7' X 0.9') 62.4 LB/CF (Based On Estimated Seasonal
High Groundwater EL=4.2)
5,111 Ibs
Fw = TANK WEIGHT + SOIL COVER
=33.500 Ibs. (Per. Spec)
Fwf = 33,500 Ibs >f Fe = 5,111 Ibs
HIGH GROUNDWATER LEVEL
CALCULATION
DEPTH TC WATER TABLE (11/2/2022)
EL=1.67
APPROPRIATE INDEX WELL:
MIW-29
WATER LEVEL RANGE ZONE:
A (0-2)
CURRENT DEPTH TO WATER LEVEL (11/2022):
9.4
WATER LEVEL ADJUSTMENT:
*2S' *SEE VARIANCE REQUEST
ESTIMATED DEPTH TO WATER LEVEL:
EL=4.2t
Z ;O) \ SPS
,
SPS#p "\ `- �N��� FLOOR PLANS:
SR� o
/`. 1. FLOOR PLANS TO BE PROVIDED SEPARATELY.
JAPE! 3 0 2023
HEALTH DEPT.
PUMP CHAMBER FLOAT DETAIL
NOT TO SCALE
OUTLET INVERT EL=7.75
Storage Volume ----Alarm
(28-3/4" = 323 Gallons) 6"
Pump On
0 1
OVER
THE COUNTER VARIANCE
REQUEST
LOCAL UPGRADE APPROVALS: 310 CMR 15.403
VARIANCE: 310
CMR 15.212 -1b (Depth to Groundwater)
1.) Separation
from bottom of Leach Field to High
Groundwater not 5'
4' held
1' variance
VARIANCE: 310
CMR 15.252: - 2F
1.) Separation
from Leach Field to Existing Leach Pit not
10'
9' held
1' variance
VARIANCE: 310
CMR 15.103: - 3b3
1.) Reduction in Estimated Seasonal High Groundwater
Adjustment -
2.5' Required
2' held
0.5' variance
48" Cycle Volume (4-1 /4 = 4ti Gallons)
Pump ON/OFF
15" Sump ZN 0FA3so
KEITH E. yc
oFERtJANDES a
c5 CIVIL
PUMP FLOAT NOTES: N°72 0 �Q
QISTEP
SIONAL jO
1. FLOATS SHALL BE SECURED TO THE DISCHARGE LINE, f
INSTALLED ON A FLOAT TREE, OR PROVIDED WITH A 4-
CABLE WEIGHT. ��2 103
2. FLOATS SHALL BE INSTALLED SO THAT THEY ARE
ACCESSIBLE FROM THE OUTLET MANHOLE COVER.
REVISED 1/19/23:
VARIANCE ADDED & UNIT 2 SAS FOOTPRINT ADDED
-' " DIG -IT
4, CONSTRUCTION, LLC
s7
PO BOX 268 SOUTH DENNIS, MA 02660
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