HomeMy WebLinkAboutInstallation Observation Letter 04.11.24CBO Inc.
129 Cains Lane
Carbondale, CO 81623
970.309.5259
carla.ostberg@gmail.com
April 11, 2024 Project No. C1840
Jose Chavez
mountainpeakinsulation@yahoo.com
Onsite Wastewater Treatment System (OWTS) Installation Observations
1113 CR 331
Garfield County, Colorado
OWTS Permit SEPT-8366
Jose,
CBO Inc. reviewed photos of the installation of the onsite wastewater treatment system (OWTS). We
were unable to be present the day of the inspection request due to of traffic issues. You, the property
owner, installed the system.
The OWTS design is based on 4-bedrooms. An average daily wastewater flow of 525 GPD was used.
The 4-inch 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 included a 1500-gallon, two-compartment Norwesco® septic tank with an
Orenco® Biotube effluent filter on the outlet tee. This filter must be cleaned annually, or as needed.
Effluent gravity flows to a distribution box, and then to five gravelless chamber trenches. The distribution
box was accessible from grade with speed levelers on each outlet pipe in the distribution box to assure
equal flow to each trench.
Each trench consists of 15 ‘ADS’ ARC 36 chambers for a total of 75 chambers and 1125 square feet of
infiltrative area. There was 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
Distribution box Speed Levelers
View of distribution box
View of septic tank and pipe to distribution box
View of septic tank
Effluent filter inlet tee
View of effluent filter clean out
Sewer line from house
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:TBD County Road 331,Silt,CO Parcel No.:217916400440
Owner Name:Jose A.Chavez Owner Phone:970)366 9824
Designed By:CBO,Inc.Designer Phone:970)309 5259
Number of Bedrooms:4 Minimum Tank Capacity:1,250 gallon Minimum Absorption:1,050 ft2
OWTS PERMIT
KEEP AVAILABLE AT PROJECT SITE
Permit Number SEPT 8366_______________________________
Permit Type X New X Repair X Remodel/addition X Tank only
Issue Date 11/03/2023____________________Expiration Date_11/03/2024_________________
Permit Conditions:
Permit Conditions:This OWTS Permit is approved on the condition of compliance with the design as
submitted by CBO,Inc.dated September 27,2023.Changes must be approved by Garfield County
Public Health and the designer prior to construction.
The new OWTS will serve a new 4 bedroom residence.The system will consist of a new,two
compartment minimum 1,500 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 1,080 ft2 of STA.The new STA will consist of 5 gravelless
trenches.Each row will consist of 18 Quick4 chambers,for a total of 90 Quick4 chambers.Inspection
ports are to be installed at each end of each trench.Maintain all setbacks and elevations as
designed.
Contact 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 BACKFILLED 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.
11/03/2023
Issued By:Garfield County Environmental Health
Department
Date
832‐R‐13‐002