HomeMy WebLinkAboutOWTS Installation Observations 02.03.202133 Four Wheel Drive Road
Carbondale, CO 81623
970.309.5259
carla.ostberg@gmail.com
February 3, 2021 Project No. C1503
Niels Hagglund
Hagglund.n@comast.net
Onsite Wastewater Treatment System Installation Observations
139 Fisher Creek Lane
Garfield County, Colorado
Permit Number SEPT-12-19-6084
Niels,
CBO Inc. observed the installation of the onsite wastewater treatment system (OWTS) on May 14, 2020
for the subject property. Teagle Excavating installed the system.
The OWTS design is based on 3-bedrooms. An average daily wastewater flow of 450 GPD was
used.
The system installation included a 1250-gallon, two-compartment concrete septic tank with an Orenco®
Biotube Pump Vault and an Orenco® PF3005 pump in the second compartment of the septic tank. The
floats were set to dose approximately 65 gallons each pump cycle, allowing approximately 13 gallons of
drain back after each pump cycle.
A 1.5-inch diameter Schedule 40 pump line was installed from the pump to an Orenco® automatic
distributing valve (ADV), model 6403. This pump line has a minimum 1% grade for proper drain back into
the tank after each pump cycle. The ADV was placed a high point in the system and was placed in an
insulated riser with access from grade. The control panel is located within line of sight of the septic tank.
Valley Precast personnel performed start-up of the pumping system on February 2, 2021.
The soil treatment area (STA) consists of three trenches, each with 14 ‘Quick 4’ Standard Plus Infiltrator®
chambers, for a total of 42 chambers and 504 square feet of infiltrative area. There was at least 4-feet of
undisturbed soil between each trench. Effluent is pressure dosed to 1.5-inch diameter laterals, which
were hung with zip ties from the underside of the chambers. Laterals have 5/32-inch diameter orifices
facing up, with the exception of the first and last holes facing down for drainage. The orifices were
placed 2-feet on center. Each lateral ends in a 90 degree ell facing up with a ball valve for flushing.
Valves were placed in a valve box, accessible from grade, for access. Inspection ports were placed at the
beginning and end of each trench. Ports were cut to grade and covered with a valve box for access.
The OWTS was generally installed according to specifications. This observation is not a guarantee of
workmanship and/or parts and materials. CBO Inc. should be notified if changes are made to the OWTS
in the future. Any additional OWTS construction must be according to the county regulations.
LIMITS: Observations are limited to components that are visible at the time of the inspection. The installer must
have documented and demonstrated knowledge of the requirements and regulations of the county in
which they are working. The quality of the installation is dependent of the expertise of the installer, soil
type, and weather conditions.
2-6-2021
Please call with questions.
Sincerely,
CBO Inc. Reviewed By:
Carla Ostberg, MPH, REHS Romeo Baylosis, P.E.
Sewer line from residence with clean out
Septic tank set
Chamber trenches
Pump line
Flushing valve
PERMIT
KEEP AVAILABLE AT PROJECT SITE
Project Address ____________________________________________ Parcel No. ________________________
Subdivision _________________________________ Lot _______ Section-Township-Range ____________
Owner Name ______________________________________________ Owner Phone _____________________
Owner Mailing Address _______________________________________________________________________
Contractor(s) ______________________________________________ Contractor Phone _________________
Work Description:
Valuation _________________________________
Square Feet _______________________________
IMPORTANT: APPLICATION IS HEREBY MADE TO THE BUILDING OFFICIAL FOR A PERMIT SUBJECT TO THE CONDITIONS AND
RESTRICTIONS SET FORTH ON THIS APPLICATION. PLEASE NOTE: Final inspection of the work authorized by this permit is required. A
Certificate of Occupancy must be obtained prior to use and occupancy of new buildings and structures. A Building Permit becomes null and
void if the authorized work is not commenced within 180 days of the date of issuance and if work is suspended or abandoned for a period of
180 days after commencement.
Permit Type ____________________________________
Work Classification _____________________________
Issue Date ___________ Expiration Date ___________
PERMIT #
Community Development Department 108 8th Street, Suite 401 Glenwood Springs, CO 81601
Phone (970) 945-8212
7/29/2020
01-07-88
Septic - New
804-241-9507
OWNER
Ranch at Coulter Creek
368 Sopris Cir., Basalt, CO 81621
new OWTS installation for single family residence -3 Bedroom
BY ENGINEER
Lot 5
SEPT-12-19-6084
239301401005
New
1/31/2020
Hagglund Revocable Trust
TBD Sec01, T07S, R88W
832‐R‐13‐002