HomeMy WebLinkAboutOWTS Installation Observations 06.12.202033 Four Wheel Drive Road
Carbondale, CO 81623
970.309.5259
carla.ostberg@gmail.com
June 12, 2020 Project No. C1499
Dan Schirer
schirer@sopris.net
Onsite Wastewater Treatment System (OWTS) Installation Observations
531 CR 326
Garfield County, Colorado
Permit Number SEPT-02-20-6132
Dan,
CBO Inc. observed the installation of the onsite wastewater treatment system (OWTS) on Mach 26, 2020
for the subject property. You, the property owner, installed the system.
The existing septic tank was pumped and the top, sides, and bottom crushed and the remaining void
filled with on-site soils. The existing STA was abandoned in place.
The OWTS design is based on 4-bedrooms (3 bedrooms in the proposed residence plus one future
bedroom). An average daily wastewater flow of 525 GPD was used.
The sewer line exiting the residence has a double-sweep clean out and a minimum 2% grade to the
septic tank. Schedule 40 sewer line was from the house to the septic tank and from the septic tank to the
distribution box.
The system installation included a 1500-gallon, 2-comaprtment Infiltrator® poly septic tank with an
Orenco® Biotube effluent filter installed on the outlet tee of the septic tank. This filter must be cleaned
annually, or as needed. Risers bring the manhole lids to grade.
Effluent gravity flows to a distribution box, and then to four gravelless chamber trenches. The distribution
box was accessible from grade and flow equalizers were installed on each outlet.
Each trench consisted of 13 ‘Quick 4’ Standard Plus Infiltrator® chambers for a total of 624 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 of the expertise of the installer, soil
type, and weather conditions.
Please call with questions.
Sincerely,
CBO Inc.
Carla Ostberg, MPH, REHS
Septic tank set inlet tee
effluent filter on outlet Schedule 40 used from house to septic tank
Schedule 40 also used from tank to distribution box
OWTS Permit
Sketch by installer
Garfield County
Public Health
Garfield County Public Health
2014 Blake Ave.
Glenwood Springs, CO 81601
Phone: (970) 945-6614 ext. 8150
OWTS PERMIT
KEEP AVAILABLE AT PROJECT SITE
Permit Number SEPT -6132
Permit Type X New X Repair X Remodel/addition X Tank only X Field Only X Amendment
Issue Date 02/28/2020 Expiration Date 02/28/2021
For inspections, call: 970-945-6614 ext. 8150 and call the Design Engineer, if applicable.
Project Address: 531 County Road 326, Silt, CO 81652 Parcel No.: 2179-352-00-531
Owner Name: Dan Schirer Owner Phone: (970) 618-1366
Designed By: Carla Ostberg with CBO, INC. Designer Phone: (970) 309-5259
Contractor Contractor Phone
Number of Bedrooms 4 Minimum Tank Capacity 1,500 gal Minimum Absorption 613 SF
Permit Conditions:
This OWTS Permit is approved on the condition of compliance with the design as submitted by CBO,
INC dated February 27, 2020. Changes must be approved by Garfield County Public Health and the
designer prior to construction.
The existing tank and OWTS at the site will be abandoned and replaced with a new OWTS. Existing
OWTS components shall be abandoned as specified in the report prepared by CBO, INC dated
February 27, 2020. The new OWTS will serve a three-bedroom residence plus a potential future
bedroom and consist of a 1,500 -gallon, two-compartment poly septic tank set leve! and accessible at
grade, followed by an distribution box set level and accessible at grade with four outlets to distribute
effluent to 624 square feet of Soil Treatment Area (STA). The STA consists of 4 level gravelless
chamber trenches, with 13 Infiltrator chambers each (52 total) with inspection ports at the beginning
and 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
appro,f the system will be issued.
liA"----, /V W1 Y
6( e0. V eep.
Issued By: Garfield County Environmental Health
Department
Date
832‐R‐13‐002