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HomeMy WebLinkAboutOWTS Installation ObservationCBO Inc. 129 Cains Lane Carbondale, CO 81623 970.309.5259 carla.ostberg@gmail.com October 17, 2025 Project No. C1919 Randy Long alwaysonelectric@hotmail.com Onsite Wastewater Treatment System (OWTS) Installation Observations 874 Peterson Lane Garfield County, Colorado Permit SEPT-9002 Randy, CBO Inc. observed the installation of the onsite wastewater treatment system (OWTS) on July 22, 2025 and July 30, 2025 for the subject property. You, the property owner, installed the system. The OWTS design is based on 2-bedrooms. An average daily wastewater flow of 300 GPD was used. The 4-inch SDR-35 sewer lines exiting the residence had a double-sweep clean out and a minimum 2% grade to the septic tank. 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 50 gallons each pump cycle. The control panel for the pump is located within line of sight of the septic tank. Valley Precast performed start up of the pumping system and a squirt test was performed. Effluent is pumped through a 1.5-inch diameter pump line from the pump chamber to an Orenco® automatic distributing valve (ADV), model 6403. This pump line has a 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 three gravelless chamber trenches, each with 14 ‘Quick 4’ Plus Standard Low Profile Infiltrator® chambers, for a total of 42 chambers and 504 square feet of infiltrative area. There was at least 4-feet of undisturbed soil between each trench. One and 1/2-inch diameter laterals 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. The orifices were placed 3-feet on center. Each lateral ends in a 90 degree ell facing up with a ball valve for flushing. Valves are placed in a valve box, accessible from grade, for access. Inspection ports are 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 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 223, Silt Parcel No.: _217701200547 Owner Name: Randy Long Owner Phone: (970) 309-0878 Designed By: CBO Inc. Designer Phone: (970) 309-5259 Number of Bedrooms: _4_ Minimum Tank Capacity: 1,250-gallon Minimum Absorption: 960 ft2 OWTS PERMIT KEEP AVAILABLE AT PROJECT SITE Permit Number _SEPT-9002_______________________________ Permit Type X New X Repair X Remodel/addition X Tank only Issue Date _12/13/2024____________________ Expiration Date_12/13/2025_________________ Permit Conditions: This OWTS Permit is approved on the condition of compliance with the report and design as submitted by CBO Inc. dated October 19, 2024. 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 a new two-bedroom residence and two-bedroom ADU. The system will consist of a new, two-compartment 1,500-gallon septic tank set level with access at grade and a screened high-head pump in the second chamber. Effluent will be pumped to an automatic distributing valve set at the high point of the system that will distribute effluent to 960 ft2 of STA. The new STA will consist of five gravelless chamber trenches, each trench consisting of 16 chambers per trench (80 chambers total). Distribution laterals are to be 1 ½ inch Schedule 40 PVC, with 5/32- inch orifices 3-feet on center and the laterals ending in 90-degree sweeping bends 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 and be equipped with orifice shields 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. 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. 12/13/2024 Issued By: Garfield County Environmental Health Department Date 832‐R‐13‐002