HomeMy WebLinkAboutOWTS Installation Observations 09.22.202033 Four Wheel Drive Road
Carbondale, CO 81623
970.309.5259
carla.ostberg@gmail.com
September 22, 2020 Project No. C1480
Whit Whitaker
wrw3@hotmail.com
Onsite Wastewater Treatment System (OWTS) Installation Observations
5345 CR 100
Garfield County, Colorado
Whit,
CBO Inc. observed the installation of the onsite wastewater treatment system (OWTS) on January 22,
2020 for the subject property. Hammerhead Operations installed the system.
The OWTS design was based on 2-bedrooms. An average daily wastewater flow of 300 GPD was used.
We verified the setback from the well to the soil treatment area (STA) was greater than 110-feet.
The system installation included a 1000-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 50 gallons each pump cycle. The control panel for the pump is located
within line of sight of the septic tank. Valley Precast out of Buena Vista was contracted for start-up of the
pumping system.
The 1.5-inch diameter pump line maintained a minimum 1% slope for drain back to the septic tank after each
pump cycle. Effluent is pressure dosed through a 1.5-inch diameter pump line to an over-excavated, 12’ x
32’ unlined sand filter with a minimum of 3-feet of sand filter material.
Laterals were connected with a 1.5-inch diameter level manifold. Laterals used to disperse the effluent were
surrounded by washed coarse screened gravel. Laterals were 1.5-inches in diameter with 5/32-inch
diameter orifices facing down, spaced 3-feet on center (OC). Orenco® Orifice Shields were installed on the
laterals at each orifice. Laterals began 2-feet from the edges of the filter, with 4-feet between each lateral.
Each 1.5-inch diameter lateral ends in a sweeping ell facing up with a ball valve for flushing. A soil
separation fabric was placed over the gravel layer followed by approximately 1-foot of topsoil or other
suitable soil able to support vegetative growth.
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.
9-24-2020
Please call with questions.
Sincerely,
CBO Inc. Reviewed By:
Carla Ostberg, MPH, REHS Romeo Baylosis, P.E.
Sewer line from house to septic tank Septic tank
Compacting backfill around septic tank excavation
Pump line angles up to STA
STA prior to back fill inspection ports and flushing valves
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
7/1/2020
25-07-88
Septic - New
970-319-2344
Hammerhead Operations
Hotchkiss-Lincicome Exemption
5345 CR 100, Carbondale, CO 81623
970-401-3743
new OWTS installation for secondary dwelling unit -
2 BR
BY ENGINEER
Parcel C
SEPT-11-19-6052
239325100150
New
1/3/2020
Jay & Christine Sills
5345 CR 100
$0.00
832‐R‐13‐002