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HomeMy WebLinkAboutInstallation Observation 05.19.2024CBO Inc. 129 Cains Lane Carbondale, CO 81623 970.309.5259 carla.ostberg@gmail.com May 19, 2024 Project No. C1547 Evan Schreiber evan@lightboxdevelopment.com Onsite Wastewater Treatment System (OWTS) Installation Observations 63 Meadow Circle Garfield County, Colorado OWTS Permit SEPT-6532 Evan, CBO Inc. observed the installation of the onsite wastewater treatment system (OWTS) on October 26, 2021 and April 22, 2024 for the subject property. RWI (Ryan Ivy) installed the system with the exception of the sewer line from the house to the septic tank and the top two risers on the septic tank which were installed at a later date when final grading was established. The OWTS design is based on 3-bedrooms in the main house and 1-bedroom in a future detached Accessory Dwelling Unit (ADU). An average daily wastewater flow of 600 GPD was used. The ADU had not been constructed at the time of our inspection and the location/elevation of the OWTS components accommodated only the main residence. The sewer line exiting the residence has a double- sweep clean out. The system installation included a 1250-gallon, two-compartment Forterra concrete septic tank with an effluent filter on the outlet tee. Risers bring the manhole lids to grade for access. An extension handle was installed on the effluent filter for ease of removal. 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 Low Profile 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. Chambers were installed below the topsoil horizon. Inspection ports were installed at the beginning and end of each trench. Ports were 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. Items addressed after our April 22, 2024 visit included the following (as described by contractor): • Extension rings were excavated/removed and two holes were grouted w/ Hydraulic cement on both sides of each ring including the previously installed gasketed rings. • Black bitumen like cordage/gasket was introduced along the inside geometry of rings. • Old effluent filter was sawed off and a new 4" Full size BioTube filter was installed in its place. • Excavated area was backfilled. 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 October 26, 2021 visit View of septic tank Forterra 1250 gal tank Sewer line between septic tank and soil treatment area (STA) Clean out on sewer line Distribution box Sewer lines to trenches Low profile trenches (ARC chambers) Trench excavation Inspection ports Sewer line from clean out to distribution box April 22, 2024 visit Clean out near house Distribution box Inlet and outlet tees (need to fill holes in risers, add rubber neck, add effluent filter) View of Distribution box and STA Inspection ports in sprinkler boxes Repairs documented Effluent filter installed with handle extension Rubber neck installed between top two risers and holes filled CGarfield County Public Health Garfield County Public Health 2014 Blake Ave. Glenwood Springs, CO 81601 Phone: (970) 945-6614 ext. 8150 OWTS PERMIT KEEP AVAILABLE AT PROJECT SITE Permit Number SEPT-6532 Permit Type X New X Repair X Remodel/addition X Tank only Issue Date 11/02/2020 Expiration Date 11/02/2021 For inspections, call: 970-945-6614 ext. 8150 and call the Design Engineer, if applicable Project Address TBD Meadow Circle Carbondale, CO Parcel No. 239106301010 Owner Name Evan Schreiber Owner Phone 917-960-5666 Designed By CBO, Inc. Contractor RWI LLC Designer Phone 970-309-5259 Contractor Phone 970-274-2422 Number of Bedrooms 4 Minimum Tank Capacity 1250-gallon Minimum Absorption 840 ft2 Permit Conditions: This OWTS Permit is approved on the condition of compliance with the report and design as submitted by CBO, inc. dated October 17, 2020. 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 three -bedroom residence and detached studio. The sewer line from the main residence will tie into the sewer line serving the studio with a "wye" fitting and additional cleanout at the point where the sewer lines tie together. A new, two -compartment precast concrete 1250-gallon septic tank will be set level with access to grade with an effluent filter on the outlet tee. Effluent will gravity flow to a distribution box set level with access to grade distributing effluent to 840 ft2 of STA. The STA will consist of five trenches, each with 14 'Quick 4' Standard Plus Infiltrator chambers for a total of 70 chambers. Inspection ports are to be installed at the beginning and end of each trench. Maintain all setbacks and elevations as designed. The proposed pond must be lined to meet minimum setback distances with current placement. Due to potential for compaction of soil in the STA, Garfield County Public Health is adding a condition of permit approval that staff must view an excavated trench prior to system install. Contact the designer and Garfield County Public Health at least 48 hours prior to requesting soil inspection and 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 owners} 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. 4-.-- 11/02/2020 Issued By: Barfield County Environmental Health Department Date 832‐R‐13‐002