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Home My WebLink AboutInstallation Observation 04.23.2026CBO Inc. 129 Cains Lane Carbondale, CO 81623 970.309.5259 carla.ostberg@gmail.com April 23, 2026 Project No. C1948 Tom Lester toml@lesterdevelopment.com Onsite Wastewater Treatment System (OWTS) Installation Observations 500 Whitecloud Road Lot 6, Whitecloud Ridge Subdivision Garfield County, Colorado OWTS Permit SEPT-9252 Tom, CBO Inc. observed the installation of the onsite wastewater treatment system (OWTS) on April 13, 2026 for the subject property. Deep Creek Construction installed the system. The OWTS design is based on 5-bedrooms. An average daily wastewater flow of 600 GPD will be used. 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. The system installation included a 1500-gallon, two-compartment Norwesco® poly septic tank with an Orenco® Biotube effluent filter on the outlet tee. Risers bring the manhole lids to grade for access. Effluent gravity flows to a distribution box, and then to five gravelless chamber trenches. The distribution box was accessible from grade with flow equalizers installed on each outlet pipe in the distribution box to assure equal flow to each trench. Each trench consists of 12 ‘ADS’ ARC 36 chambers for a total of 60 chambers and 900 square feet of infiltrative area. There was at least 4-feet of undisturbed soil between each trench. Inspection ports must be 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 Sewer line from residence Sewer line with clean out 1500 gal Norwesco septic tank Inlet tee Septic tank Effluent filter (handle extension added) View of distribution box Distribution box Trenches with inspection ports / installer added filter fabric over chambers ADS ARC 36 chambers Trenches 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: 500 White Cloud Road, Carbondale Parcel No.: 239129418006 Owner Name: White Cloud Lot 6 LLC Owner Phone: (970) 379-4655 Designed By: CBO Inc. Designer Phone: (970) 309-5259 Number of Bedrooms: _5_ Minimum Tank Capacity: 1500-gallon Minimum Absorption: 840 ft 2 OWTS PERMIT KEEP AVAILABLE AT PROJECT SITE Permit Number _SEPT-9252_______________________________ Permit Type X New X Repair X Remodel/addition X Tank only Issue Date _05/19/2025____________________ Expiration Date_05/19/2026_________________ Permit Conditions: This OWTS Permit is approved on the condition of compliance with the report and design as submitted by CBO Inc. dated March 18, 2025. 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 five-bedroom residence. A new 1500-gallon two compartment septic tank set level with access to grade with an effluent filter installed in the outlet tee of the tank will be installed. The septic tank shall be on the Colorado Department of Public Health and Environment’s approved septic tank list. Effluent will gravity flow to a new distribution box set level with access to grade and then to a distribution box that will distribute effluent to 840 ft 2 of STA. The new STA area will consist of five gravelless chamber trenches, each trench consisting of 14 ‘Quick 4’ chambers per trench (70 chambers total). Inspection ports will 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. 05/19/2025 Issued By: Garfield County Environmental Health Department Date SHEET 1 OF 1 DRAWN CHECKED QA MFG APPROVED Todd Bolzer 5/8/2012 DWG NO TITLE 1500 GALLON LOW PROFILE SEPTIC TANK - IAPMO SIZE B SCALE: 1/16 NORWESCO, INC., ST. BONIFACIUS, MN REV REVISION HISTORY ZONE REV DESCRIPTION DATE APPROVED 40 6 MATERIAL: HIGH-DENSITY POLYETHYLENE WALL THICKNESS: TANK WALL - .250" DIVIDER WALL - .19" LIQUID LEVEL 971 4 481 2 20" LID DIVIDER WALL OUTLET INLET 69 NORWESCO, INC. ST. BONIFACIUS, MN 1500 GALLON CAPACITY MAX. EARTH COVER 3.0 FT SERIAL NUMBER EMBOSSED HERE CAN BE REFERENCED TO THE DATE OF MANUFACTURE 4" INLET1 11 20 3 81 2 4" DIAMETER PASS-THROUGH HOLE IN PARTITION 233 4 1571 4 (external dimension) 1563 4 (internal dimension) 11 14 2 26 OPERATING VOLUME: PRIMARY COMPARTMENT: 1006 GALLONS OPERATING VOLUME: SECONADARY COMPARTMENT: 498 GALLONS CT APPROVED EFFLUENT FILTER 4043 • • • • • • • • • • • ADS N-12® ST IB Pipe (per ASTM F2648) 832‐R‐13‐002