HomeMy WebLinkAbout07. OWTS ReportISDS Report
BELL CONSULTING, LLC.
PO Box 8
Rifle, CO 81650
Ph. 970-625-9313
Fax 970-625-9315
October 26, 2018
Garfield County Community Development Department
AND
Joy Dunlap
2233 W. Poinsettia Dr.
Phoenix, AZ 85029
RE: ISDS Preliminary Analysis; Dunlap Minor Subdivision; County Road 259; Rifle , CO 81650
Ms. Dunlap and Garfield County Community Development Department:
Bell Consulting LLC has performed an analysis for Onsite Wastewater Treattnent Systems (OWTS) for
the proposed Dunlap Minor Subdivision. The current residence on proposed Lot 3 is served by an existing
OWTS that appears to be functioning based on recent inspections.
Percolation tests were performed and a profile hole was inspected for each of the two proposed lots in a
general location within the lots. The purpose of the analysis was to determine the feasibility of utilizing
OWTS's within each of the lots.
Lot 1 testing included 3 percolation tests yielding a percolation rate of 36 minutes per inch. The profile
hole indicated silty, loam soils with a groundwater depth of 6 -feet below the surface. The profile hole was
excavated in the lower elevation portion of the Lot to assess the proximity to groundwater. We
recommend the leach field be located out of the lower lying areas of the lot.
Lot 2 testing included 3 percolation tests yielding a percolation rate of 16 minutes per inch in the hillside
area and 48 minutes per inch in the lower pasture area of the lot. The profile hole indicated silty, loam
soils with a groundwater depth of 8 -feet below the surface. The profile hole was excavated in the lower
elevation portion of the Lot to assess the proximity to groundwater. We recommend the leach field be
located out of the lower Tying areas of the lot.
These tests are general in nature for the sites since the exact location of the proposed residences and
associated systems was not known at the time of testing. Site specific testing in precise locations for the
leach fields will have to be performed at the time of building permit application.
Please call with any questions.
Sincerely,
Bell
Natha
d:\bc jobfi
nor subd\isds\shaffer owts final inspection.docx
Dunlap Minor Subdivision - OWTS October 26, 2018
Page 1 of 1
INDIVIDUAL SEWAGE
DISPOSAL SYSTEM
(Septic Tank and Leach Field)
OPERATION and
MAINTENANCE GUIDE
PREPARED BY:
Bell Consulting, LLC.
INDIVIDUAL SEWAGE DISPOSAL SYSTEM
OPERATION AND MAINTENANCE
The following tips and suggestions are intended to increase the useful life of your engineered
sewage disposal system and to prevent disposal system failure due to neglect and abuse. The
design of this system is designed for a specific number of persons occupying the stated
structures.
A larger occupancy rate than the design rate may result in an overload of the septic system
and cause immediate system failure or a reduction of the life span of the leaching area.
MINIMIZE THE LIQUIDS
Practicing water conservation practices within your home can minimize wastewater that enters
the system. The less wastewater you produce, the less wastewater there will be to treat and
dispose.
1. Repair leaky fixtures. Check the toilet by dropping food coloring dyes in the tank
and see if it shows up in the bowl prior to flushing.
2. Wash clothes only when you have a full load.
3. Take short showers instead of baths. Don't turn on the shower all the way and turn
it off while lathering.
4. Install and use water saving fixtures and devices in your bathrooms, laundry rooms
and kitchens.
5. Do not let the water run while washing, shaving, brushing teeth, rinsing
vegetables, dishes, etc. Use a stoppered basin where possible.
6. Provide adequate drainage around the engineered system area to divert surface
runoff from higher ground during storms or winter snowmelt.
MINIMIZE THE SOLIDS
Septic systems are "anaerobic" treatment systems. Digestion of solid materials is very slow and
requires air or "aerobic" conditions to "disappear". The less material you put into the system, the
less often it will require pumping. A good rule to follow is:
"Don't use your septic system for anything that can be disposed of in some
other way"
1. Avoid using a garbage disposal. Properly dispose of scraps and other
garbage by composting, recycling, or with the trash.
I.S.D.S. O&M Manual page 2 of 4
2. Collect grease in a container rather than pouring it down the sink.
3. Minimize the disposal of paper products into the system. Non -degradable
items such as disposable diapers, sanitary napkins, tissues, cigarette butts
and paper towels are especially harmful to the system.
4. Only three things should go into the septic tank:
Human Wastes;
Toilet Paper; and
Water.
5. Ordinary household chemicals (bleaches, detergents & soaps) will not hurt
the bacteria in your system when not used in excessive amounts.
6. DO NOT DISPOSE OILS, PAINTS, THINNERS, FILM DEVELOPMENT CHEMICALS,
OR OTHER TOXIC LIQUIDS INTO YOUR SYSTEM.
SEPTIC TANK ADDITIVES
Advertised chemical additives, bacteria, enzymes, etc. do not help solids breakdown in
the septic tank and will not reduce the need for pumping the septic tank.
REGULAR INSPECTIONS
Septic Tank:
To inspect the septic tank, remove the manhole cover at the inlet end of the
tank. Use a shovel to push the scum layer away from the side of the tank and
estimate its thickness. If the scum layer is 12" thick or more, arrange to have the
septic tank pumped immediately. Replace the cover and wash off the shovel
and your hands.
For an average 3 or 4 bedroom residence, the pumping interval for the septic
tank is usually between 2 and 4 years. Annual inspection of the septic tank should
become part of your overall home maintenance routine.
Dosing Tank or Pump Station:
To inspect the dosing tank, follow the same instructions for the septic tank.
However, there should not be a scum layer or sediments inside the tank. Check
to see if the water level markings are consistent on the side of the tank. Variability
indicates that the siphon or effluent pump is not operating properly. If the water
I.S.D.S. O&M Manual page 3 of 4
level is near the top of the markings, wait for the siphon or pump to operate and
watch for problems. The siphon has an overflow pipe in which the effluent will
flow out of the tank by gravity. Should this be occurring, have the tank pumped
and check the siphon openings to see if they are plugged.
Effluent Filter:
To inspect the effluent filter, remove the manhole cover at the outlet end of the
tank. However, there should not be a scum layer or sediments inside the tank.
Check to see if the water level markings are consistent on the side of the tank.
High water indicates that the effluent filter is not operating properly. If the water
level is near the top, remove the filter cartridge using the filter cartridge handle.
Keeping the filter in the septic tank, spray the filter with water until clean. Replace
the filter into the effluent tee.
Filter Mound or Trench:
Check the observation tubes regularly. Standing water near the same elevation
as the natural soil surface (or higher) may be an indication of trouble.
Look for seepage or excessive wetness near the base of the filter mound or trench
area.
SUMMARY
A general inspection of the septic tank, dosing tank (or pump station), filter mound or
trench area should be made each year. These inspections are best made during the
wet season of the year. If these items are not routinely inspected, solids can carry over
into the disposal areas from the septic tank and clog the system resulting in system failure
and health hazard risks. In areas with potentially high ground water, the septic tank
should be pumped during low water months such as September, October, and
November. Pumping during high water months may cause the septic tank to float out of
the ground.
I.S.D.S. O&M Manual page 4 of 4
•s INDIVIDUAL SEWAGE DISPOSAL SYSTEM APPLICATION
r _
OWNER µ_. �%n S : 1 �:
ADDRESS ,A 715$ - o s A Re (i 'ids-) PHONE b Q5- 3 9 14
CONTRACTOR
ADDRESS PHONE
PERMIT REQUEST FOR (56 NEW INSTALLATION { ) ALTERATION ( ) REPAIR
Attach separate sheets or report showing entire area with respect to surrounding areas, topography of area,
habitable building, location of potable water wells, soil percolation test holes, soil profiles in test holes (See page 4).
LOCATION OF PROPOSED FACILITY:
Near what City of Town R l F) E Size of Lot 5 R r'RES
Legal Description or Address
WASTES TYPE: QC► DWELLING ( ) TRANSIENT USE
( ) COMMERCIAL OR INDUSTRIAL ( ) NON-DOMESTIC WASTES
( ) OTHER - DESCRIBE
BUILDING OR SERVICE TYPE:
Number of Bedrooms 9 Number of Persons 5
{ ) Garbage Grinder (Y) Automatic Washer (X) Dishwasher
SOURCE AND TYPE OF WATER SUPPLY: (x) WELL ( ) SPRING ( ) STREAM OR CREEK
If supplied by Community Water, give name of supplier:
DISTANCE TO NEAREST COMMUNITY SEWER SYSTEM:
Was an effort made to connect to the Community System?
A site plan is resluired to be submitted that indicates the following MINIMUM distances:
Leach Field to Well: 100 feet
Septic Tank to Well: 50 feet
Leach Field to Irrigation Ditches, Stream or Water Course: 50 feet
Septic System to Property Lines: 10 feet
YOUR INDIVIDUAL SEWAGE DISPOSAL SYSTEM PERMIT WILL NOT BE ISSUED
WITHOUT A SITE PLAN.
GROUND CONDITIONS
Depth to first Ground Water Table
Percent Ground Slope
2
7T!R,. '^. jR?'^i.r r,:,,._
GARFIELD COUNTY BUILDING AND SANITATION DEPARTMENT Permit
Assessor's Parcel No.
2921
109 8th Street Suite 303
Glenwood Springs, Colorado 81601
Phone (303) 945.8212
INDIVIDUAL SEWAGE DISPOSAL PERMIT
PROPERTY
``'�'� { � } 1�n aaoS �f le
Owner's Name 5 UJf I1J Ccteak+13COAPresent Address /2'1 53 It* Phone
System Location S q' 1 0.,OU 641 f p fkc� a59 R i f 1e i Co. 43 TL SO
Legal Description of Assessor's Parcel No
This does not constitute
a building or use permit.
SYSTEM DESIGN
f 2 S- f/ Septic Tank Capacity (gallon) Other
/ Nr�r
1 3� Percolatioi Rate (minutes/inch) Number of Bedrooms (or other) 'q-"
Required Absorption Area F Bee Attached
i I
Special Setback RequiremprjtA:
Date Inspector
FINAL SYSTEM INSPECTION AND APPROVAL (as installed)
Cali for Inspection (24 hours notice) Before Covering Installation
System Installer
Septic Tank Capacity
C.
ISoo
..SC.zutac_c
e �t c 4L tt T rNrG
Septic Tank Manufacturer or Trade Name C o P E t 4 t -1O
Septic Tank Access within 8" of surface V6 5
a T A C j,rc cs [ rt.acu's OF to rAC
Absorption Area
Absorption Area Type and/or Manufacturer or Trade Name 40 1 N F I L rtti A T 0 S
VV5
Adequate compliance with County and State regulations/requirements
Other
Date
Inspector
Ai IL( C5
RETAIN WITH RECEIPT RECORDS AT CONSTRUCTION SITE
*CONDITIONS:
1. All installation must comply with all requirements of the Cdjarado State Board of Health Individual Sewage Disposal Systems Chapter
25, Article 10 C.R.S: 1973, Revised 1984. ti
2. This permit is valid only for connection to structures which ave fully complied with County zoning and building requirements. Con-
nection to or use with any dwelling or structures not approved by the Building and Zoning office shall automatically be a violation or a
requirement of the permit and cause for both legal action and revocation of the permit.
3. Any person who constructs, alters, or installs an individual sewage disposal system in a manner which involves a knowing and material
variation from the terms or specifications contained in the application of permit commits a Class I, Petty Offense ($500.00 fine — 8
months in jail or both).
White -APPLICANT Yellow - DEPARTMENT
TYPE OF INDIVIDUAL SEWAGE DISPOSAL SYSTEM PROPOSED:
90 SEPTIC TANK ( ) AERATION PLANT ( ) VAULT
( ) VAULT PRIVY ( ) COMPOSTING TOILET ( ) RECYCLING, POTABLE USE
PIT PRIVY ( ) INCINERATION TOILET ( ) RECYCLING, OTHER USE
CHEMICAL TOILET ( ) OTHER - DESCRIBE
(
FINAL DISPOSAL BY:
Y`)
ABSORPTION TRENCH, BED OR PIT ( ) EVAPOTRANSPIRATION
( ) UNDERGROUND DISPERSAL ( ) SAND FILTER
( ) ABOVE GROUND DISPERSAL ( ) WASTEWATER POND
( ) OTHER - DESCRIBE
WILL EFFLUENT BE DISCHARGED DIRECTLY INTO WATERS OF THE STATE?
PERCOLATION TEST RESULTS: (To be completed by Registered Professional Engineer, if the Engineer does
the Percolation Test)
Minutes
Minutes
per inch in hole No. 1 Minutes
per inch in hole NO. 3
per inch in hole No, 2 Minutes per inch in hole NO. _
Jite
Name, address and telephone of RPE who made soil absorption tests:
Name, address and telephone of RPE responsible for design of the system:
Applicant acknowledges that the completeness of the application is conditional upon such further mandatory and
additional tests and reports as may be required by the local health department to be made and furnished by the
applicant or by the local health department for purposed of the evaluation of the application; and the issuance of the
permit is subject to such terms and conditions as deemed necessary to insure compliance with rules and regulations
made, information and reports submitted herewith and required to be submitted by the applicant are or will be
represented to be true and correct to the best of my knowledge and belief and are designed to be relied on by the
local department of health in evaluating the same for purposes of issuing the permit applied for herein. I further
understand that any falsification or misrepresentation may result in the denial of the application or revocation of any
permit granted based upon said application and in legal action for perjury as provided by law.
Signed Date
IO2 7?7
PLEASE DRAW AN ACC TE MAP TO YOUR PROPERTY!!
3
4
Designate North Arrow
SATURATION AND PREPARATION
DATE: 12/01/97
TIME AT START OF SATURATION: 11:30 am
PERCOLATION TEST
DATE: 12/02/97
WATER IN BORING AFTER 24 HOURS
YES X NO
PERCOLATION TEST RESULTS
HOLE
NUMBER
DEPTH
(INCHES)
TIME AT
START OF
INTERVAL
TIME
INTERVAL
(MINUTES)
DEPTH TO WATER
•
CHANGE
IN
PERCOLA-
TION RATE
(MIN/INCH)
START OF
INTERVAL
(INCHES)
END OF
INTERVAL
(INCHES)
WATER
DEPTH
(INCHES)
P-1
48
10:10
30
7.5
9.5
2.0
15
10:40
30
9.5
10.75
1.25
24
11:10
30
10.75
11.75
1.0
30
11:40
r
30
4.75
5.75
1.0
30
12:10
30
5.75
6.5
0.75
40
12:40
30
6.5
7.25
0.76
40
1:10
30
7.25
8.0
0.75
40
P-2
42
10:15
30
11.75
12.25
0.50
60
10:45
30
12.25
12.75
0.50
60
11:15
30
12.75
14.5
1.75
17
11:45
30
14.5
16.26
1.75
17
12:15
30
16.25
17.75
1.5
20
12:45
30
17.75
19.5
1.75
17
1:15
30
19.5
21.25
1.75
17
P-3
39
10:50
30
13.0
14.75
1.75
17
11:20
30
14.75
16.25
1.5
20
11:50
30
16.25
17.5
1.25
24
r
12:20
30
17.5
18.75
1.25
24
12:50
30
18.75
19.75
1.25
24
1:20
30
19.75
21.0
1.25
24
Job No. GS -2334
Fig. 6
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SUMMARY OF LABORATORY TEST RESULTS
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