Laserfiche WebLink
<br />t_ <br />EEC Project No. 1082030 <br />ASCI - Turnpike Reservoir <br />May 5, 2008 <br />Page 12 <br />Earth Engineering Consultants, Inc. <br />2.0 Construction Standards: The applicant must demonstrate the constructed <br />liner meets the requirements of the design by performing appropriate quality <br />control observations and tests. The applicant shall provide written <br />documentation of the work performed and results of the quality control field <br />and laboratory tests. <br />3.0 Performance Standards: The Performance Standard shall be three times <br />the Design Standard as described above. The performance Standard shall be <br />applied to an initial test of competency of the liner, as well as to the on-going <br />operation of the reservoir. <br />3.1 Initial Liner Test <br />For Mined Pits: The unregulated groundwater inflow to the reservoir will be <br />tested by evacuating the contents of the reservoir and observing the inflow of <br />water over a period of 90 days. The start of the test will be under essentially <br />dry conditions. <br />A water balance must be performed to demonstrate the balance of the inflows (i.e. <br />precipitation and groundwater) and outflows (i.e. evaporation) equals the change in storage <br />volume by a minimum of a 90-day test. Ongoing monitoring of the water balance may also <br />be required as determined by the Division Engineer." <br />General Geotechnical Considerations <br />The primary purpose of our subsurface exploration, in-situ permeability/packer testing, <br />laboratory evaluation/testing and engineering analyses was to determine the feasibility for the <br />construction of an approximate 800 to 1,000 acre-foot water storage reservoir. The reservoir <br />embankments/wetted perimeter should consist of a homogeneous cohesive material constructed <br />with relatively impervious clay and/or bedrock material having a coefficient of permeability of <br />1 x 10 7cm/sec or slower when compacted to at least 95 percent of standard Proctor density <br />(ASTM D698). We understand a blend of on-site overburden soils or approved imported