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Home My WebLink AboutOWTS Installation Observations 08.10.2025CBO Inc. 129 Cains Lane Carbondale, CO 81623 970.309.5259 carla.ostberg@gmail.com August 10, 2025 Project No. C1894 Tom Russello tom@russello.net Onsite Wastewater Treatment System (OWTS) Installation Observations 4300 Bear Paw Lane Garfield County, Colorado Permit SEPT-8962 Tom, CBO Inc. observed the installation of the onsite wastewater treatment system (OWTS) on December 10, 2024 for the subject property. EOS Excavation Services installed the system. The OWTS design is based on 5-bedrooms. An average daily wastewater flow of 600 GPD was used. Construction of the residence was not completed at the time of this letter. An inspection of the sewer line from the residence to the septic tank and final measurements must be completed after construction and prior to certificate of occupancy inspection of the residence. The 4-inch SDR-35 sewer line exiting the residence had a double-sweep clean out and a minimum 2% grade to the septic tank. Where this temporary sewer line crosses the water line, it has been encased. The system installation included a 1500-gallon, two-compartment Infiltrator® poly septic tank with an Orenco® Biotube Effluent Filter followed by a 500-gallon, single-compartment Infiltrator® poly pump chamber with an Orenco® Biotube Pump Vault and an Orenco® PF3005 pump. The effluent filters must be cleaned annually, or as needed. The floats are set to dose 65 gallons each pump cycle, allowing 1 gallon of drain back. The control panel for the pump is located within line of sight of the septic tank. Effluent is pumped through a 1.5-inch diameter pump line from the pump chamber to an Orenco® automatic distributing valve (ADV), model 6605. The ADV was installed at a high point in the system in an insulated riser with access from grade. At the time of our inspection, the pump line and ADV were not properly plumbed. This was corrected. Effluent is pressure dosed through 1.5-inch diameter pipes to five gravelless chamber trenches, each 16 ‘Quick 4’ Plus Standard Infiltrator® chambers, for a total of 80 chambers and 960 square feet of infiltrative area. There are 4-feet of undisturbed soil between each trench. Effluent is pressure dosed to 1.5-inch diameter laterals, which are 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 are placed under each downward-facing orifice. The orifices are 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. When the residence resumes construction, we must verify the sewer line connection from the house to the septic tank with a double-sweep clean out and minimum 2% fall. An additional run-through of the pumping system should be conducted if the OWTS is not in use for an extended time. 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 12/23/2024 To Whom It May Concern: We have been to the following site: 4300 Bear Paw Road, Glenwood Springs, 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 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: 4300 Bear Paw LN, Glenwood Springs, CO 81601 Parcel No.: _218517400152 Owner Name: Constance and Thomas Russello Owner Phone: (571) 237-4827 Designed By: CBO, Inc. & K-Cronk Engineering Designer Phone: (970) 309-5259 Number of bedrooms: 5 Minimum Tank Capacity: 1,500-gallon Minimum Absorption: 960 ft2 OWTS PERMIT KEEP AVAILABLE AT PROJECT SITE Permit Number _SEPT-8962_______________________________ Permit Type X New X Repair X Remodel/addition X Tank only Issue Date _11/18/2024____________________ Expiration Date _11/18/2025_________________ Permit Conditions: This OWTS Permit is approved on the condition of compliance with the report and design as submitted by CBO, Inc. and K-Cronk Engineering on July 29, 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 5-bedroom residence. The new OWTS components will consist of a new, two-compartment 1,500-gallon septic tank set level with access to grade and an effluent filter installed in the outlet tee of the tank followed by a 500-gallon single-compartment pump chamber with a high-head pump in the pump chamber. Effluent will be pumped to an Automatic Distributing Valve (ADV) 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 Quick4 chambers per trench (80 chambers total). The pump line and distribution laterals are to be 1.5-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 with the exception of the first and last orifices that will face downward (with orifice shields) for drainage. Inspection ports are to be installed at each end of each trench. Maintain all setbacks and elevations as designed. To assist in scheduling, please contact Garfield County Public Health (970-945-6614 ext. 8150) to notify the start of OWTS construction. 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. 11/18/2024 Issued By: Garfield County Environmental Health Department Date 832‐R‐13‐002