HomeMy WebLinkAboutOWTS Design Report 07.25.2017v
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CLEANOUT AT
THE BUILDING
-4"0 SCH.40 PVC
CONSTRUCT A 6" DEEP
CUTOFF SWALE ABOVE
THE ABSORPTION FIELD
CDPHE APPROVED 1,500 -GALLON
PRECAST CONCRETE TWO CHAMBER
SEPTIC TANK (SEE DETAIL)
4"0 SCHAO PVC
OVERFLOW
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MAINTENANCE NOTES
INSPECTION \
PORT, TYP.
1. TO ENCOURAGE THE HEALTH AND LONGEVITY OF THE OWTS SYSTEM, THE OWNER SHALL CONSIDER THE FOLLOWING:
I.A. MINIMIZE THE AMOUNT OF WATER THAT GOES DOWN THE DRAIN, THE BETTER YOUR SYSTEM WILL WORK. \
I.B. MINIMIZE SOLIDS GOING DOWN THE DRAIN.
I.C. ELIMINATE GARBAGE DISPOSALS OR KEEP THE USE OF GARBAGE DISPOSALS TO A MINIMUM.
1.D. MINIMIZE GREASE AND OILS THAT GO DOWN THE DRAIN.
1.E. USE LINT FILTERS ON LAUNDRY MACHINE DRAINS. \
1.F. KEEP SAND AND DIRT OUT OF THE BUILDING DRAIN.
AVOID FLUSHING SANITARY NAPKINS OR PAPER PRODUCTS OTHER THAN TOILET PAPER.
1.G. L �
1.H. DO NOT USE LYE -BASED DRAIN UNCLOGGER CHEMICALS SUCH AS DRAINO, OVEN -OFF, OR OTHER STRONG
CLEANING AGENTS.
1.1. DO NOT PUT ANY 'ROOT DETERRENTS" DOWN THE DRAIN.
1.J. DO NOT POUR PAINT THINNER, PESTICIDES, PAINTS OR PHOTO LAB CHEMICALS DOWN THE DRAIN
I.K. MINIMIZE USE OF CHLORINE BLEACH AND TOILET ADDITIVES.
2. THE OWNER SHALL CONTRACT WITH A SEPTIC TANK INSPECTOR TO INSPECT THE TANK ANNUALLY FOR GREASE AND
SEDIMENT ACCUMULATION. THE INSPECTOR SHALL REMOVED AND PROPERLY DISPOSED OF ACCUMULATED GREASE
AND SEDIMENT AS NEEDED TO ENSURE PROPER FUNCTION OF THE SYSTEM.
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POTABLE WATER \ ��
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SITE EVALUATION
SOIL EVALUATION
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1.
SITE AND SOIL EVALUATIONS WERE PERFORMED BY:
1. SOIL PERCOLATION TESTS IN THE
DERICJ. WALTER, PE LOUIS E. ELLER
NATIVE SOILS (BASALT GRAVEL,
SURFACE
Glenwood Springs, CO 81601
BOUNDARIES UNLIMITED INC. HPKUMARGEOTECHNICALENG.
COBBLES AND BOULDERS INA
fax: 970.384.2833
923000PERAVE, STE. 201 5020C.R.#154
SAND AND SILT MATRIX) RANGED
TOPSOIL
GLENWOOD SPRINGS, CO 81601 GLENWOOD SPRINGS, CO 81601
FROM 6-10 MPI INDICATING A SOIL
808 IRVING AVENUE
BE DONE DURING WET WEATHER AND USE OF
970.945.5252 970.945.7988
TYPE OF 0 AND AN LTAR OF 0.80
BASALT
0
RUBBER TIRE VEHICLES OVER THE ABSORPTION
GPD/SF.
GRAVEL,
2.
EVALUATION DATE(S): JUNE 2017.
AREA IS STRICTLY PROHIBITED.
COBBLES
Know what's below.
2. THE NATIVE SOILS CONTAIN
UNSUITABLE MATERIAL EXISTING WITHIN THE FIELD
AND
3.
SETBACK REQUIREMENTS FOR A TREATMENT LEVEL 1 STA TRENCH/BED, UNLINED
BOULDERS. WHEN ENCOUNTERED,
BOULDERS
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SAND FILTER OR SEEPAGE PIT (PER TABLE 7-1) AND AN ADWF=750 GPD:
REMOVED THE BOULDER AND
IN A
3.A.
SPRING OR WELL=100'
BACKFILL THE VOID WITH LOAMY
SAND
3.B.
POTABLE WATER SUPPLY LINE= 25'
SAND OR SANDY GRAVELS.
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AND
3.C.
POTABLE WATER SUPPLY CISTERN= 25'
BEDROCK OR GROUNDWATER IS ENCOUNTERED IN
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SILT
3.D.
DWELLING=20'
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THE OVER -EXCAVATION.
MATRIX
3.E.
PROPERTY LINE, PIPE OR LINED IRRIGATION DITCH=10'
7.
(TYPE -O)
3.F.
INTERMITTENT IRRIGATION LATERAL, INFILTRATION STRUCTURE=25'
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3.G.
LAKE, WATER COURSE, IRRIGATION DITCH, STREAM OR WETLAND=50
(MIN.)
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3.H.
DRY GULCH, CUT BANK OR FILL AREA= 25'
CONCRETE LID
CONCRETE LID
3.1.
SEPTIC TANK= 5'
FINISH GRADE
3.J.
RESTRICTIVE LAYER OR GROUNDWATER (VERTICAL): *(TREATMENT LEVEL 1,
PRECAST RISER '.
GRAVITY FEED)
STANDARD INSPECTION PORT, TYP. (4°0 PVC
3.
SETBACK REQUIREMENTS FOR THE SEPTIC TANK SHALL BE (PER TABLE 7-1):
3.A.
SPRING OR WELL=50'
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3.B.
POTABLE WATER SUPPLY LINE=10'
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3.C.
POTABLE WATER SUPPLY CISTERN=25'
CLEANOUT ASSEMBLY, INSTALL A MARKER IF CAP
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3.D.
DWELLING=5'
Drafter:
BU
IS TO BE BURIED.
3.E.
PROPERTY LINE, PIPE OR LINED IRRIGATION DITCH=10'
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3.F.
INTERMITTENT IRRIGATION LATERAL, INFILTRATION STRUCTURE= 10'
IN INFLOW SHALL ENTER THE
3.G.
LAKE WATER COURSE, IRRIGATION DITCH, STREAM OR WETLAND --50'
Site & Soils Evaluation
3.11.
DRY GULCH, CUT BANK OR FILL AREA= 10'
I
3.1.
STA TRENCH/BED, UNLINED SAND FILTER OR SEEPAGE PIT=5'
Scale. N LS
ATTACH REMOVABLE CAP OR
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THREADED CLEANOUT ASSEMBLY.
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INSTALL MARKER IF CAP IS TO
FINISH GRADE
BE BURIED.
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NOTE:
4'0 PVC RISER
4" PVC WYE
4"0 45° BEND
4°0 SEWER LINE
oCleanout
Scale: N.T.S.
6Al",
1
GRAVELLESS CHAMBER SYSTEM
INFILTRATOR QUICK 4, ADVANCED DRAINAGE
SYSTEMS BIODIFFUSER (STANDARD), OR
ENGINEER APPROVED EQUAL
1
BOTTOM TO BE LEVEL AND FLAT OVERT
ENTIRE AREA TO WITHIN 0.05'±. (TYP.)
IF NECESSARY TO ACHIEVE THIS
SURFACE, IMPORT CONCRETE SAND TO
USE AS LEVELING MATERIAL.
REMOVE ANY ENCOUNTERED
BOULDERS AND BACKFILL WITH LOAMY
SAND OR SANDY GRAVELS. DO NOT
USE COMPACTED MATERIALS.
GENERAL ABSORPTION AREA NOTES
1. INSTALL CHAMBER UNITS IN ACCORDANCE WITH
MANUFACTURER'S RECOMMENDATIONS.
2. ABSORPTION TRENCHES SHALL BE 3WIDE OR LESS
AND PARALLEL THE GROUND SURFACE CONTOURS.
PARALLELING TRENCHES SHALL BE SEPARATED BY
A DISTANCE OF 6' MIN.
3. THE BOTTOM OF THE ABSORPTION TRENCHES
SHALL BE LEVEL AND THE BOTTOM AND
SIDEWALLS MUST BE RAKED TO REMOVE ANY SOIL
SMEARS INCURRED DURING THE EXCAVATION.
FAILURE TO DO SO MAY REQUIRE THE CONTRACTOR
TO REPLACE THE ABSORPTION FIELD AT HIS/HER
OWN EXPENSE.
12" MIN. COVER
24" MAX. COVER
INFLOW AND OVERFLOW
PIPES SHALL ENTER THE
UPPER KNOCKOUTS FINISHED GROUND - MAINTAIN POSITIVE
SLOPE AWAY FROM TOP SURFACE OF
THE CHAMBER TRENCHES.
I
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I UNDISTURBED NATIVE SOILS
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36" MAX.
4"0 SCH. 40 OR SDR35
PVC OVERFLOW PIPE
6(MIN ) -
SERIAL TRENCH SYSTEM
Typical Chamber Serial Trench System
Scale: N.T.S.
Vicinity Map
Carbondale _ To Basalt
V=4000'
SYSTEM NOTES
1. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH PITKIN COUNTY REGULATION 6.28 ONSITE WASTEWATER TREATMENT SYSTEMS (OWTS), MOST CURRENT
EDITION AND LOCAL AGENCY REQUIREMENTS WHICH MAY OR MAY NOT SPECIFICALLY BE NOTED ON THE DRAWINGS. THE CONTRACTOR SHALL BE RESPONSIBLE
FOR KNOWING AND CONFORMING TO SUCH SPECIFIC DETAILS AS ARE REFERRED TO IN THE ABOVE MENTIONED REGULATIONS, THIS DRAWING DOES NOT
CONSTITUTE AN OWTS PERMIT. A PERMIT MUST BE OBTAINED FROM APPROPRIATE LOCAL AGENCY. THE ENGINEER MUST OBSERVE THE CONSTRUCTED SYSTEM
BEFORE BACKFILL AND PROVIDE A LETTER OF INSPECTION AS REQUIRED BY THE LOCAL AGENCY. A REQUEST FOR INSPECTION MUST BE MADE BY THE
CONTRACTOR AT LEAST 48 -HOURS PRIOR TO THE EXPECTED TIME OF BACKFILLING.
2. DEMAND CALCULATIONS (SEC.43.6.A.2.h)
2.A. FOUR (4) BEDROOM RESIDENCE USING DOSING AND TREATMENT LEVEL 1 (TL1).
2.8. AVERAGE DAILY WASTEWATER FLOW (ADWF) AND ORGANIC LOAD RATE (BODS):
2.8.1. SINGLE FAMILY DWELLING: 75 gpdc & 0.20 BODS lbs/day
2.8.2. ADWF = 75 gpd' (3 BEDROOMS ` 2 PERSONS/BEDROOM + 1 BUNK ROOM' 4 PERSONS) =750 gpd
2.B.3. BODS = 0.20 lbs/day ` (3 BEDROOMS ` 2 PERSONS/BEDROOM + 1 BUNK ROOM' 4 PERSONS) = 2.00lbs/day
BODS ml = BOD5'1,000,000 = 2.00lbs/day`1,000,000 = 319.8 mg/L
ADWF`8.34 750gpd`6.34
2.B.4. CBOD5 = BODS " 0.85 = 272 mg7L
3. SEPTIC TANK (SEC.43.9.B.2.2):
3.A. SEPTIC TANK: 10 PERSONS EQUATES TO 5 BEDROOMS @ 2 PERSONS/BEDROOM. THEREFORE, 1,250 GALLONS + 250 GALLONS = 1,500 GALLONS
3.B. INSTALL A 1,500 -GALLON TWO-COMPARTMENT TANK.
3.C. THE TANK IS NOT SUBJECT TO BUOYANCY.
4. ABSORPTION AREA CALCULATIONS
4.A. GROUNDWATER WAS NOT ENCOUNTERED, THE PROPERTY CONTAINS SLOPES LESS THAN 20%, BUT THE SOILS CONTAIN AND LARGE QUANTITY OF
BOULDERS. THEREFORE, THE SYSTEM SHALL BE A PRESSURE DOSED SHALLOW GRAVELLESS CHAMBER SYSTEM IN A SEQUENCED TRENCH
CONFIGURATION.
4.B. SOILS WERE ANALYZED BY He KUMAR GEOTECHNICAL ENGINEERING (JUNE 21, 2017; PROJECT NO.17-7-349) TO BASALT GRAVEL, COBBLES AND
BOULDERS IN A SAND AND SILT MATRIX (TYPE -0) WITH A TREATMENT LEVEL 1 LONG TERM ACCEPTANCE RATE (LTAR) OF 0.80 gpd/SF.
4.C. MINIMUM SOIL TREATMENT AREA, A:
A= ADWF = 750 = 938 S.F.
LTAR 0.80gpd/S.F.
4.D. SIZE ADJUSTMENT FACTORS: GRAVITY TRENCH = 1.0; CHAMBER TRENCH= 0.7
4.D.1. A, adj = 938 SF , 1.0' 0.7 = 567 SF
4.E. GRAVELLESS CHAMBER SYSTEM:
4.E.1. INFILTRATOR QUICK4: 567 SF / 12 SF/UNIT = 55 UNITS IN TRENCH CONFIGURATION.
4.E.2. ADS BIODIFFUSER (STANDARD): 657 SF / 18.75 SF/
UNIT = 36 UNITS IN A TRENCH CONFIGURATION.
5. THIS SYSTEM IS SIZED FOR TYPICAL DOMESTIC WASTES ONLY. BACKWASH OR FLUSHING FLOWS FOR REVERSE OSMOSIS UNITES OR WATER SOFTENERS AND/OR
FILTERS SHOULD NOT BE INTRODUCED INTO THIS SYSTEM.
6. CLEAN OUTS ARE REQUIRED AT THE HOUSE AND AT ALL BENDS AND AT LEAST EVERY 100 -FEET BETWEEN THE HOUSE AND THE SEPTIC TANK.
7. THE CONTRACTOR SHALL BE RESPONSIBLE FOR INSTALLING ALL WATER TIGHT COMPONENTS THROUGHOUT THE SYSTEM TO PREVENT INFILTRATION.
8. INSTALL RISERS AS NECESSARY TO BRING ALL ACCESS PORTS TO FINAL GRADE. PORTS SHALL BE MARKED IF CAPS ARE TO BE BURIED.
9. INSTALL 3 -INCHES OF BLUEBOARD INSULATION, 3 -FEET WIDE, OVER SEWER AND EFFLUENT PIPE WHEREVER DEPTH IS LESS THAN 5 -FEET. UNDER NO
CIRCUMSTANCES SHALL COVER BE LESS THAN 2 -FEET.
10. SITE PLAN INFORMATION FROM OTHERS. LOCATIONS OF ALL COMPONENTS MAY BE VARIED AS NECESSARY AS LONG AS ALL MINIMUM DISTANCES AND SLOPES
MEET THOSE REQUIRED.
4.
DRAINAGE SWALES ARE TO BE PROVIDED ABOVE
0 Surveying
m & Beyond
AND AROUND THE FIELD, AS NECESSARY, TO
PREVENT SURFACE RUNOFF FROM ENTERING
923 Cooper Avenue
Suite 201
Glenwood Springs, CO 81601
ABSORPTION AREA.
fax: 970.384.2833
Engineer or Surveyor Seal
5.
NO EXCAVATION OF THE ABSORPTION FIELD IS TO
KEVIN STROM
808 IRVING AVENUE
BE DONE DURING WET WEATHER AND USE OF
630.567.40402
NORTH
0
RUBBER TIRE VEHICLES OVER THE ABSORPTION
Scale 1 10'
AREA IS STRICTLY PROHIBITED.
Know what's below.
6.
UNSUITABLE MATERIAL EXISTING WITHIN THE FIELD
SHALL BE EXCAVATED AND BACKFILL SHALL
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CONSIST OF IMPORTED LOAMY SAND OR SANDY
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GRAVEL. THE ENGINEER SHALL BE CONTACTED IF
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BEDROCK OR GROUNDWATER IS ENCOUNTERED IN
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THE OVER -EXCAVATION.
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7.
TOPSOIL COVER MAY BE VARIED (1 -FOOT MINIMUM,
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6'TOPSOIL
2 -FOOT MAXIMUM) TO ALLOW FOR LANDSCAPING.
(MIN.)
CONCRETE LID
CONCRETE LID
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FINISH GRADE
PRECAST RISER '.
STANDARD INSPECTION PORT, TYP. (4°0 PVC
SOLID PIPE CUT TO FIT. LOCATE PER PLAN VIEW.
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ATTACH REMOVABLE CAP OR THREADED
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PROJECT NO.
17013
Sheet
CLEANOUT ASSEMBLY, INSTALL A MARKER IF CAP
C.4
DDJW
Drafter:
BU
IS TO BE BURIED.
Date:
07/25/17
_
IN INFLOW SHALL ENTER THE
_
PVC COUPLING FOR SUPPORT
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LARGER CHAMBER
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NOTE:
STATE APPROVED 1500 -GALLON
TWO (2) CHAMBER CONCRETE
BAFFLE OPENING
SEPTIC TANK.
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1' CRUSHED ROCK. 6" DEEP TO LEVEL TANK
Septic Tank & Dosing System
Seale: N.T.S.
Civil Engineering
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923 Cooper Avenue
Suite 201
Glenwood Springs, CO 81601
tele: 970.945.5252
fax: 970.384.2833
Engineer or Surveyor Seal
Client Information:
KEVIN STROM
808 IRVING AVENUE
WHEATON, IL 60187
630.567.40402
NORTH
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10' 20'
Scale 1 10'
Know what's below.
Call before you dig.
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PROJECT NO.
17013
Sheet
FILE NAME:
17013-c-topo.dwg
ner:
C.4
DDJW
Drafter:
BU
Date:
07/25/17