HomeMy WebLinkAboutInstallation Observation Letter 12.13.2023CBO Inc.
129 Cains Lane
Carbondale, CO 81623
970.309.5259
carla.ostberg@gmail.com
December 13, 2023 Project No. C1845
Rose Marie Wettstein
rosiewettstein@gmail.com
Onsite Wastewater Treatment System (OWTS) Installation Observations
34 Kings Row Avenue
Garfield County, Colorado
OWTS Permit SEPT-8394
Rose Marie,
CBO Inc. observed the installation of the onsite wastewater treatment system (OWTS) on November 29,
2023 for the subject property. Freeman Construction installed the system.
The OWTS design is based on 3-bedrooms. An average daily wastewater flow of 450 GPD was used.
A camera was run through the existing sewer line and it was found to be in good condition. A double-
sweep clean-out was installed where the existing sewer line attached to the new sewer line.
The existing 1000-gallon, two-compartment concrete septic tank was crushed to the extent possible
because of a large tree over a portion of the existing tank walls. A new, 1000-gallon, two-compartment
poly Roth® septic tank with a 4-inch diameter Orenco® Biotube effluent filter was installed. This filter
must be cleaned annually, or as needed.
Effluent gravity flows to a distribution box, and then to four 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 19 ‘Quick 4’ Standard Plus Infiltrator® chambers for a total of 76 chambers and
912 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
New clean out installed / new sewer line begins after clean out / new septic tank
Note: existing sewer line under tree / sewer line to house in good condition.
View of distribution box and distribution lines to trenches
Inlet tee Outlet tee with effluent filter (needed handle extension)
Distribution box (angle on inlet and flow equalizers on outlet pipes added later)
Gravelless chamber trenches
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: 34 Kings Row Avenue, Carbondale, CO 81623 Parcel No.: _239121301002
Owner Name: Tamara Tormohlen Owner Phone: 970‐618‐8335
Designed By: CBO Designer Phone: (970) 309‐5259
Number of Bedrooms: 2 or 3 Minimum Tank Capacity: 1,000‐gallon or 1,250‐gallon Minimum Absorption: 600 ft2 or 900 ft2
OWTS PERMIT
KEEP AVAILABLE AT PROJECT SITE
Permit Number _SEPT‐8394_______________________________
Permit Type X New X Repair X Remodel/addition X Tank only
Issue Date _11/09/2023____________________ Expiration Date_11/09/2024_________________
Permit Conditions:
This OWTS Permit is approved on the condition of compliance with the report and design as
submitted by CBO, Inc. dated October 21, 2023. Changes to the design and permit must be approved
by Garfield County Public Health and the designer prior to construction.
The new OWTS will serve either an existing 2‐bedroom (or an expanded 3‐bedroom) residence. The
new OWTS components will consist of either the existing 1,000‐gallon septic tank or a new, two‐
compartment 1,000‐gallon septic tank set level with access to grade and an effluent filter installed 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 612 ft2 or 912 ft2 of STA. The new STA will consist of three (or
four) gravelless chamber trenches consisting of 17 (or 19) Infiltrator Quick4 chambers (51 or 76
chambers total). Inspection ports will 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. NO OWTS COMPONENT SHALL BE BACKFILED
WITHOUT PRIOR APPROVAL FROM GARFIELD COUNTY PUBLIC HEALTH AND THE DESIGNER.
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.
11/09/2023
Issued By: Garfield County Environmental Health
Department
Date
832‐R‐13‐002