HomeMy WebLinkAboutAs-built Report 06.12.2020CIVIL ENGINEERING
An Employee -Owned Company
LAND SURVEYING
MEMORANDUM
To: Matt Provost, Garfield County Building Department Department
From: Roger Neal, PE
Date: June 22, 2020
Project: Cova Residence — Lot 22 Oak Meadows Filing 2
Subject: OWTS Construction Approval Letter, Permit SEPT 6275
The proposed OWT S design at Lot 22, Oak Meadows Filing 2, Garfield County has been installed per the approved and
permittedplans. The installation contractor was E&L Excavation , 279 Chairbar Road, Silt, CO. A site visit to perform a system
inspection was conducted on May 22, 2020.
Soil test pits were evaluated September 30, 2019 by Kumar and Associates, project number 19-7-575.
The trenches were excavated and soil type was unchanged from the excavatedpits. The trenches were located in the general
area of design and had proper separation between trenches. Five rows of 21 infiltrator quick 4 chambers were installed for a
total number of 105 chambers which were equal to the design of 84 Arc 36 chambers in the design. The ADV valve was
installed at the high point andwould drain back to field and tank. Insulation board was place at shallow cover areas. Inspection
ports were installed on the north ends of the trench runs along with the cleanout ports. The ports that were installed were
brought to above grade as required.
The new dosing 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 performedby Valley Pre -cast. Control box was
mounted on the southeast corner of the building.
The tank lids have been raised to the proposed grade elevation.
Grading at the northern end of the system was graded down to reduce grade to approximately 4' over the chambers, this was
verified by depth measurements in the inspection ports.
Please see attachedphotos 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
1517 BLAKE AVENUE, SUITE 101
GLENWOOD SPRINGS, CO 81601
970-945-8676 • PHONE
970-945.2555 • FAX
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Chambers in Trench
Dosing Tank and Riser
1517 BLAKE AVENUE, SUITE 101
GLENWOOD SPRINGS, CO 81601
970-945-8676 • PHONE
970-945.2555 • FAX
WWW.HCENG.COM
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
Control Panel
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1517 BLAKE AVENUE, SUITE 101
GLENWOOD SPRINGS, CO 81601
970-945-8676 • PHONE
970-945.2555 • FAX
WWW.HCENG.COM
Completed Field
1517 BLAKE AVENUE, SUITE 101
GLENWOOD SPRINGS, CO 81601
970-945-8676 • PHONE
970-945-2555 • FAX
WWW.HCENG.COM