HomeMy WebLinkAboutOWTS Installation Observations 11.04.2024CBO Inc.
129 Cains Lane
Carbondale, CO 81623
970.309.5259
carla.ostberg@gmail.com
November 4, 2024 Project No. C1739
Jen Hiatt
jnh@hiatthallenbeck.com
Onsite Wastewater Treatment System (OWTS) Installation Observations
1884 CR 120
Garfield County, Colorado
OWTS Permit SEPT-8020
Jen,
CBO Inc. observed the installation of the onsite wastewater treatment system (OWTS) on July 8, 2024 for
the subject property. El Jebel Concrete and Excavation installed the system.
The OWTS design is based on 2-bedrooms. An average daily wastewater flow of 300 GPD was used.
The 4-inch diameter Schedule 40 sewer line exiting the residence had a double-sweep clean out and a
minimum 2% grade to the septic tank.
The system installation included a 1000-gallon, two-compartment septic tank Infiltrator® poly 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 three gravelless chamber trenches. The
distribution box was accessible from grade with flow equalizers installed on each outlet pipe in the
distribution box to assure equal flow to each trench.
Each trench consists of 12 ‘Quick 4’ Standard Plus Infiltrator® chambers for a total of 36 chambers and
432 square feet of infiltrative area. There was at least 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
Clean out near foundation Sewer line under driveway to septic tank
Sewer line from house to septic tank Inlet tee
Effluent filter Infiltrator 1060
Septic tank set level Sewer line existing septic tank
Distribution box Trenches
Trenches
View of septic tank, dbox, and trenches
Various pipe slope readings
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: 1884 County Road 120, Glenwood Springs, CO 81601
Parcel No.: 218718102029
Owner Name: Jennifer Hiatt Owner Phone: (970) 366‐6553
Contractor Name: W/W Construction Contractor Phone: (970) 319‐4353
Designed By: CBO, Inc. Designer Phone: (970) 309‐5259
Number of Bedrooms _2__Minimum Tank Capacity _1,000‐gal__Minimum Absorption_350 SF
OWTS PERMIT
KEEP AVAILABLE AT PROJECT SITE
Permit Number _SEPT‐8020________________________
Permit Type X New X Repair X Remodel/addition X Tank only X Field Only X Amendment
Issue Date 03/24/2023 Expiration Date 03/24/2024
Permit Conditions:
This OWTS Permit is approved on the condition of compliance with the design as submitted by CBO,
Inc. dated September 10, 2022. Changes must be approved by Garfield County Public Health and the
designer prior to construction.
The new OWTS will serve a new 2‐bedroom residence. The system will consist of a new, two‐
compartment 1,000‐gallon septic tank set level with access to the compartments provided at grade
and an effluent filter in the outlet tee of the tank. Effluent will gravity flow to a distribution box set
level with access provided at grade that will distribute effluent to 432 ft2 of STA. The new STA will
consist of three gravelless chamber trenches with 12 Quick4 chambers per trench (36 Quick4
chambers total). Inspection ports shall be installed at each end 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.
Agreement
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.
03/24/2023
Issued By: Garfield County Environmental Health
Department
Date
832‐R‐13‐002