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HomeMy WebLinkAboutOWTS Installation Observations 10.11.191517 Blake avenue, suite 101 Glenwood Springs, CO 81601 970-945-8676  phone 970-945-2555  fax www.hceng.com An Employee-Owned Company MEMORANDUM To: Matt Provost, Garfield County Building Department Department From: Roger Neal, PE Date: October 11, 2019 Project: Ensign Residence – Lot 23 High Aspen Ranch Subject: OWTS Construction Approval Letter, Permit BLRE08174868 The proposed OWTS design at Lot 23 High Aspen Ranch, Garfield County has been installed per the approved and permitted plans. The installation contractor was Aspen Digger , 0075 Sopris Avenue, Carbondale, CO. A site visit to perform a system inspection was conducted on August 29, 2017. Soil test pits were hand dug and percolation tests were performed August 3 2017. The trenches were excavated and soil type was unchanged from the excavated pits. The trenches were located in the general area of design and had proper separation between trenches. Four rows of 16 chambers each were installed for a total number of 64 chambers which were equal to the design. Sand media was installed three feet deep below the chambers. Inspection ports were installed on the north ends of the trench runs. The ports that were installed were brought to above grade as required. The new septic tank meets sizing requirements per the design and has an inlet drop per design. The pump and automatic distribution valve were in place and setup and testing of the system was performed by Valley Pre-cast and there startup letter is attached. Alarms have been set and tested. The tank lids have been raised to the proposed grade elevation. Please see attached photos of the installation. Please let me know if you have any questions pertaining to this acceptance letter submittal. Thank you, Roger D. Neal, P.E. High Country Engineering, Inc. Enc. -Installation pictures -As-built drawing Civil engineering Land surveying 1517 Blake avenue, suite 101 Glenwood Springs, CO 81601 970-945-8676  phone 970-945-2555  fax www.hceng.com Chambers in Trench Tank and Risers Automatic distribution Valve ADV Riser Box 1517 Blake avenue, suite 101 Glenwood Springs, CO 81601 970-945-8676  phone 970-945-2555  fax www.hceng.com Finished Grade at Tank Finished Grade at Field Finished Grade at Distribution Valve.