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HomeMy WebLinkAboutOWTS Installation Observations 12.29.16 December 29, 2016 Project No. C1206 Tom Reid Mrman635@msn.com Onsite Wastewater Treatment System (OWTS) Installation Observations Lot 2, Overview Subdivision Garfield County, Colorado Permit Number SEPT-01-16-4031 Tom, ALL SERVICE septic, LLC observed the installation of the onsite wastewater treatment system (OW TS) on several occasions, including June 15, 2016 for the subject property. David Rippy installed the system. The system installation included a 1250-gallon, two-compartment concrete septic tank with an Orenco® ProPak and PF3005 pump in the second compartment. There is a filter in the second compartment of the septic tank that must be cleaned annually, or as needed. The control panel for the pump is located within line of sight of the septic tank. Valley Precast performed start up on the pumping system. Effluent is pumped through a 1.5-inch diameter Schedule 40 discharge pipe to an automatic distributing valve (ADV) Model 6402. The ADV was placed at the high point of the system in an insulated riser and is accessible from grade. The 1.5-inch diameter pump line has a minimum grade of 1% for proper drain back into the pump tank. Effluent is distributed to two pressurized 10’ x 25’ beds with a minimum of 1-feet of ASTM C33 concrete sand installed at the bottom of the over-excavated soil treatment area (STA). The over-excavated area does not extend more than 1-foot below native grade. Two rows of 6 Eljen® A42 modules were placed on top of the sand filter material in each bed and connected with level 1.5-inch diameter manifolds. Laterals are placed inside 4-inch diameter perforated SDR 35 pipe (with holes at 4 and 8 o’clock), per Eljen® specifications. Each 1.5-inch diameter lateral ends in a sweeping ell facing up with a ball valve for flushing. Inspection ports were placed in the sand filter material at the corners of each bed. The OWTS was generally installed according to specifications. This observation is not a guarantee of workmanship and/or parts and materials. ALL SERVICE septic, LLC 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 of the expertise of the installer, soil type, and weather conditions. Please call with questions. Sincerely, ALL SERVICE septic, LLC Reviewed By: Carla Ostberg, MPH, REHS Richard H. Petz, P.E. Double sweep clean-out near house Septic tank prior to backfill Septic tank (looking south toward beds) Pump line exiting septic tank Inlet tee ADV Eljen beds Filter fabric over modules More eljen bed photos Manifold entering one of the beds Final grading Flushing valves and inspection ports 832‐R‐13‐002