HomeMy WebLinkAboutObservation of InstallationCBO Inc.
129 Cains Lane
Carbondale, CO 81623
970.309.5259
carla.ostberg@gmail.com
August 10, 2025 Project No. C1713
Nichole Denney
c/o Shawn Parsons
shawn@nativewaste.com
Onsite Wastewater Treatment System (OWTS) Installation Observations
1447 CR 321
Garfield County, Colorado
Permit SEPT-7968
Nichole,
CBO Inc. observed the installation of the onsite wastewater treatment system (OWTS) on July 21, 2025
for the subject property. Native Waste Solutions installed the system.
The OWTS design is based on 4-bedrooms. An average daily wastewater flow of 525 GPD was used.
The 4-inch diameter SDR-35 sewer line exiting the residence has a double-sweep clean out and a
minimum 2% grade to the septic tank.
The system installation includes a 1250-gallon, two-compartment Forterra concrete septic tank with an
effluent filter on the outlet tee. This filter must be cleaned annually, or as needed. Risers bring the
manhole lids to grade for access.
Effluent gravity flows to a distribution box, and then to six gravelless chamber trenches. The distribution
box is accessible from grade and with flow equalizers.
Each trench consists of 12 ADS ‘ARC’ 36 chambers for a total of 72 chambers and 1080 square feet of
infiltrative area. There are 4-feet of undisturbed soil between each trench. Inspection ports were
installed at the beginning and end of each trench. Ports may be cut to grade and placed in sprinkler
boxes 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 on the expertise of the installer, soil
type, and weather conditions.
Please call with questions.
Sincerely,
CBO Inc.
Carla Ostberg, MPH, REHS
Garfield County Public Health
2014 Blake Ave.
Glenwood Springs, CO 81601
Phone: (970) 945-6614 ext. 8150
For inspections, call: 970-945-6614 ext. 8150 and call the Design Engineer, if applicable
Project Address: 1447 CR 321 Rifle, CO Parcel No.: _217719101001
Owner Name: Estate of Jesse Squire Jr Owner Phone: (970)-309-5259
Designed By: CBO Designer Phone: (970)-309-5259)
Number of Bedrooms: 4 Minimum Tank Capacity: 1,250-gallon Minimum Absorption: 1,050 ft 2
Agreement
OWTS PERMIT
KEEP AVAILABLE AT PROJECT SITE
Permit Number _SEPT-7968_______________________________
Permit Type X New X Repair X Remodel/addition X Tank only
Issue Date _03/09/2023____________________ Expiration Date_03/09/2024_________________
Permit Conditions:
Permit Conditions: This OWTS Permit is approved on the condition of compliance with the design as
submitted by CBO. dated January 16, 2023. Changes must be approved by Garfield County Public
Health and the designer prior to construction.
The new OWTS will serve a new 3-bedroom residence with a future 4th bedroom. The system will
consist of a new, two-compartment minimum 1,250-gallon septic tank set level with access to grade
and an effluent filter in the outlet tee of the tank. Effluent will gravity flow to a distribution box set
level with access to grade that will distribute effluent to 1,050 ft 2 of STA. The new STA will consist of
6 gravelless trenches. Each row will consist of 15 Quick4 chambers, for a total of 90 Quick4
chambers. Inspection ports are to be installed at the terminal ends of each trench. Maintain all
setbacks and elevations as designed.
Contact the designer and Garfield County Public Health at least 48 hours prior to requesting final
inspection of the installed system prior to backfill.
All installations must comply with all requirements of the Garfield County OWTS regulations
including but not limited to the conditions specified above.
In consideration of the issuance of the permit, the applicant hereby agrees to comply with all
laws and regulations related to the zoning, location, construction, and erection of the proposed
OWTS and associated structures for which this permit is granted. The applicant further agrees
that if the above said regulations are not fully complied with in the zoning, location, erection,
and construction of the above described OWTS and structure, the permit may then be revoked
by notice from the Health Department and immediately become null and void.
The issuance of a permit and specifications of terms and conditions therein will not constitute
assumption of liability, nor create presumption that the local public health agency or its
employees may be liable for the failure or malfunctioning of any system. Permit issuance will
not constitute a certification that the system, the equipment used in the system, or any
component used for system operation will ensure continuous compliance with the provision of
the OWTS Act, the regulations adopted thereunder, or any terms and conditions of a permit.
Permit Approval
Plans and specifications for the proposed OWTS have been reviewed and are considered
satisfactory. Permission is hereby given to the property owner(s) to perform the work indicated
in accordance with the Garfield County OWTS Regulation. This Permit will expire 1 year from
the date of issuance unless construction on the system has commenced. An "as-built" drawing
must be submitted and inspection of the system must be completed by GCPH before final
approval of the system will be issued.
03/09/2023
Issued By: Garfield County Environmental Health
Department
Date
832‐R‐13‐002