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Home My WebLink AboutOWTS Installation Observations 10.29.2021CBO Inc. 129 Cains Lane Carbondale, CO 81623 970.309.5259 carla.ostberg@gmail.com October 29. 2021 Project No. C1613 Whitney Erickson Whitney.erickson@cox.net Onsite Wastewater Treatment System (OWTS) Installation Observations 51 Sopris Avenue Garfield County, Colorado Permit SEPT-05-21-6849 Whitney, CBO Inc. observed the installation of the onsite wastewater treatment system (OWTS) in July 2021 and again on October 29, 2021 for the subject property. Ridgeline Landworks installed the system. The OWTS design is based on 4-bedrooms. An average daily wastewater flow of 525 GPD was used. The existing septic tank was pumped and top, bottom, and sides crushed, and the remaining void filled with onsite material. The existing sewer line was replaced with a new 4-inch diameter SDR-35 sewer line with a double-sweep clean out and a minimum 2% grade to the septic tank. The system installation included a 1500-gallon, two-compartment concrete septic tank with an Orenco® Biotube Pump Vault and an Orenco® PF3005 pump in the second compartment of the septic tank. The control panel for the pump is located on the shed to the east which is within line of sight of the septic tank. Valley Precast out of Buena Vista performed start-up of the pumping system. Effluent is pumped through a 1.5-inch diameter pump line from the pump chamber to an Orenco® automatic distributing valve (ADV), model 6402. The ADV was placed at the high point in the system in an insulated riser with access from grade. Effluent is pressure dosed through two 1.5-inch diameter distribution lines to two zones, each with three 26’ long laterals connected with a level manifold. The bed consists of an over-excavated 12’ x 55’ footprint with a minimum of 3-feet of sand filter material installed in the over-excavated footprint. Laterals used to disperse the effluent were surrounded by washed coarse screened gravel. Laterals were 1.5-inches in diameter with 5/32-inch diameter orifices facing down, spaced 2-feet on center. Each 1.5-inch diameter lateral ends in a sweeping ell facing up with a ball valve for flushing. At the time of our last inspection, the area had not yet been revegetated. 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. 11-4-2021 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. Reviewed By: Carla Ostberg, MPH, REHS Romeo Baylosis, P.E. Control panel mounted on shed/carport to the east Pump chamber ADV Sand placed in over-excavation Laterals on gravel Distribution lines from Separation fabric Flushing valves and inspection ports Gurfield County c Garfield County Public Health 2014 Blake Ave. Glenwood Springs, CO 8L601 Phone: {970) 945-6614 ext. 8150 OWTS PERMIT KEEP AVAITABLE AT PROJECT SITE Permit Number SEPT-6849 Permit Type X New X Repair X Remodel/addition X Tank only lssue Date os/ls12027 Expiration Date 0511812022 For inspections, call: 97O-945-66t4 ext. 8150 and call the Design Engineer, if applicable Project Address: 53, Sopris Ave, Carbondale, CO 81623 Parcel No.: 2393283L30t4 Owner Name: Whitnev J. EricksOn Owner Phone: (480) 710-5515 Designed By: CBO. lnc. Designer Phone: (970) 309-5259 Number of Bedrooms: 4 Min Tank Capacity: 1,250-eallon Min Absorption: 656.25 ftz Permit Conditions This OWTS Permit is approved on the condition of compliance with the report and design as submitted by CBO, lnc. dated May 6,2Q21. 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 two-bedroom ¡esidence and potential addition of 2 bedrooms. The system will consist of a new, two-compartment 1,500-gallon concrete septic tank set level with access to grade and a pump in the second compartment of the tank. Effluent will be pumped to an Automatic Distribution Valve (ADV) set level with access to grade to distribute effluent to 660 ft2 of STA. The new 5TA will consist of an unlined sand filter consisting of two zones of three laterals placed on the 12'x 55'sand filter. Laterals and the manifold will be 1.5" diameter PVC. Laterals will be spaced 4-feet on center and located 2-feet from the edge of the filter on the outer layers of the sand filter. Laterals will have 5/32-inch diameter orifices, facing down, spaced every 2-feet on center. lnspection ports are to be installed at each corner ofthe bed. Maintäin all setbacks and elevations as designed. CONDITION OF APPROVAL: ONE PRoFltE PIT {DUE To toT Slzl CONSTRAINTS} sHAtt BE EXCAVATËD AND EVATUATËD BY THE DESIGNER IN THË AREA OF THÊ PROPOSED STA PRIOR TO ¡NSTALLATION OT THE OWTS AS DESIGNED TO VERIFY SOIL CONDITIONS ASSUMED FOR THE STA. A REVISED REPORT SHATT BE SUBMITTED TO GCPH PR'OR TO INSTATLATION OF THE OWTS COMPONENTS. Contact the desþner and Garfield County Pubtie Flealth at least4S hours prior to requesting final insBeetion of the installed system pr¡or 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. ln considerat¡on of the issuance of the permit, the applicant hereby âgrees to comply with all laws and regulations related to the zoning, location, construct¡on, and erect¡on 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 mãy 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 presumpt¡on 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. û ;0sh8/2a2l lssued By: Garfield County Environmental Health Department Date 832‐R‐13‐002