HomeMy WebLinkAboutObservation of Installation 06.22.2023CBO Inc.
129 Cains Lane
Carbondale, CO 81623
970.309.5259
carla.ostberg@gmail.com
June 22, 2023 Project No. C1787
Scott Dillard
scottdillardrealtor@gmail.com
Onsite Wastewater Treatment System (OWTS) Installation Observations
144 CR 111
Garfield County, Colorado
OWTS Permit SEPT-8004
Scott,
CBO Inc. observed the installation of the onsite wastewater treatment system (OWTS) on May 11 and 12,
2023 for the subject property. E&L Trucking installed the system.
The OWTS design is based on 4-bedrooms. An average daily wastewater flow of 525 GPD will be used.
The homeowner requested a change in location of the septic tank to save a tree on the property. With
this change in location, the system, as designed, was unable to meet the required minimum 100-foot
setback to the well. We worked with the installer and Garfield County to change the design from a trench
to a bed configuration. All other aspects of the design remained the same. We verified the setback from
the chamber bed to the well at just over 100-feet at the time of installation.
The existing sewer line from the residence to the existing septic tank with a camera and the sewer line
was found to be in good condition. A clean out is present near the foundation of the residence. A new 4-
inch SDR-35 sewer line tied into the exiting sewer line with a wye fitting.
The system installation included a 1500-gallon, two-compartment Valley Precast concrete septic tank
with an Orenco® Biotube Pump Vault and an Orenco® PF3005 pump in the second compartment of the
septic tank. The floats were set to dose approximately 65 gallons each pump cycle. The control panel for
the pump is located on the northwest exterior corner of the residence. Valley Precast out of Buena Vista
performed start-up of the pumping system (letter enclosed).
Effluent is pumped through a 1.5-inch diameter pump line from the pump chamber to an Orenco®
automatic distributing valve (ADV), model 6404. This pump line had a minimum 1% grade for proper drain
back into the tank after each pump cycle. The ADV was placed at a high point in the system in an insulated
riser with access from grade.
Effluent is pressure dosed through 1.5-inch diameter pipes to the soil treatment area (STA) consisting of
four rows of 13 ‘Quick 4’ Plus Standard Infiltrator® chambers, for a total of 52 chambers and 624 square
feet of infiltrative area. With the change from a trench to a bed configuration, the required square footage
was 614 square feet.
Effluent is pressure dosed to 1.5-inch diameter laterals, which were hung with zip ties from the underside
of the chambers. Laterals have 5/32-inch diameter orifices facing up, with the exception of the first and
last orifices facing down for drainage. Orenco® Orifice Shields may be placed under each downward-
facing orifice. The orifices were placed 2-feet on center. Each lateral ends in a 90 degree ell facing up
with a ball valve for flushing. Valves may be placed in a valve box, accessible from grade, for access.
Inspection ports must be placed at the beginning and end of each trench. Ports may be cut to grade and
covered with a valve box 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
1500-gallon concrete septic tank Pump line exits tank
View of septic tank and STA Inlet tee
View of ADV (inside riser) and chamber bed ADV
Chamber bed Inspection ports and flushing valves
View of chamber bed greater than 102’ verified from well
control panel
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: 144 CR 111, Carbondale, CO 81623_ Parcel No.: _246303400033
Owner Name: Kawaiiness LLC Owner Phone: _N/A__
Designed By: CBO Septic Consulting, Inc. Designer Phone: (970) 309-5259
Number of Bedrooms: _4_ Minimum Tank Capacity: 1,250-gallon Minimum Absorption: 490 ft 2
OWTS PERMIT
KEEP AVAILABLE AT PROJECT SITE
Permit Number _SEPT-8004_______________________________
Permit Type X New X Repair X Remodel/addition X Tank only
Issue Date _03/14/2023____________________ Expiration Date_03/14/2024_________________
Permit Conditions:
This OWTS Permit is approved on the condition of compliance with the report and design as
submitted by CBO Septic Consulting, Inc. dated February 25, 2021. 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 an existing four-bedroom residence. The existing OWTS will be abandoned
in place. The system will consist of a new, two-compartment 1,500-gallon septic tank set level with
access to grade and a high-head pump in the second compartment. Effluent will be pumped to an
automatic distributing valve set at the high point of the system that will distribute effluent to 528 ft 2
of STA. Each dose will be 65 gallons for each pump cycle with approximately 7 gallons of drain back.
The new STA will consist of four gravelless chamber trenches, each trench consisting of 11 Quik 4
chambers per trench (44 chambers total). Distribution laterals are to be 1 ½ inch Schedule 40 PVC,
with 5/32-inch orifices 2-feet on center. Laterals will end with sweeping ells and flushing valves at
the distal end of the laterals. Laterals are to be hung from the underside of the chambers with zip-
ties. The orifices are to be facing upward, except for the first and last orifice (which shall face
downward for drainage purposes). Inspection ports are to 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.
03/14/2023
Issued By: Garfield County Environmental Health
Department
Date
05/30/2023
To Whom It May Concern:
We have been to the following site:
144 CR 111/Prince Creek, Carbondale, Garfield County
We have verified that the system was started properly. The System went through several
cycles with no issues.
- Amperage and voltage of control panel, floats, and pump are all within
manufacturers specifications and tolerance at start up.
- Floats verify for functionality.
- High level alarm functions upon activation at control panel.
If you have any questions, please do not hesitate to call me at 719-395-6764, ext. 13.
Sincerely,
Scott McIntosh
Service Manager
832‐R‐13‐002