Laserfiche WebLink
<br />. <br />SUBSURFACE EXPLORATION REPORT - FEASIBILITY STUDY <br />PROPOSED TURNPIKE WATER STORAGE RESERVOIR <br />HIGHWAY 52 AND WELD COUNTY ROAD 1 <br />WELD COUNTY, COLORADO <br />EEC PROJECT NO. 1082030 <br />May 5, 2008 <br />INTRODUCTION <br />The subsurface exploration and engineering analyses for the feasibility of Turnpike <br />Reservoir, a proposed 800 to 1,000 acre-foot raw water storage reservoir, planned for <br />construction near the northeast corner of Highway 52 and County Line Road in Weld <br />County, Colorado has been completed. For this feasibility study, a total of ten (10) <br />supplemental soil borings, in conjunction with a previous study performed by others, were <br />completed within the proposed reservoir configuration to obtain information on existing <br />subsurface conditions. The borings were located within areas accessible to our drilling <br />equipment and were extended to depths of approximately 30 to 40-feet below present site <br />grade. Individual boring logs and a site diagram indicating the approximate boring locations <br />are provided with this report. <br />The Turnpike Reservoir property is located northeast of the intersection of County Line <br />Road/Weld County Road 1 and Highway 52 in Erie, Weld County, Colorado. More <br />particularly the site is located within Section 31 and the South'/2 of Section 30, Township 2 <br />North, Range 68 West of 6`" PM. The majority of the site, approximately 32-acres, <br />previously was active in mining operations, which extracted sand and gravel deposits <br />encountered above the underlying bedrock formation. A reclaimed, unlined "lake" currently <br />occupies the northern portion of the site. Currently, Asphalt Specialties Company, Inc. <br />(ASCI) mines portions of the site. <br />The purpose of this report is to describe the subsurface conditions encountered in the <br />supplemental borings, analyze and evaluate the test data and provide geotechnical <br />recommendations concerning design and construction of an approximate 800 to 1,000 acre- <br />foot reservoir. Those recommendations are based, in part, on discussions with the project <br />owner and project design team. EEC's assessment also included review of a previous <br />subsurface exploration conducted by Rocky Mountain Consultants, Inc. (RMC), title "Draft -