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V. The Parties shall provide each other with copies of whatever surveys are <br /> obtained without charge. <br /> vi. Contractor shall give Owner notification of the completion of the Reservoir <br /> at least I year prior to the expected date of completion (Delivery Date). <br /> B. Reservoir Clay Liner and Side Slope <br /> i. The clay liner shall be designed to meet the "Design Standard" described <br /> in the State Engineer Guidelines for Lining Criteria for Gravel Pits (August 1999), <br /> as amended from time to time, in effect at the time of construction and approval <br /> of the clay liner. The liner design shall be performed by a Colorado registered <br /> engineer and be submitted to Owner for its approval ninety (90) days prior to the <br /> start of construction of any part of the liner. Any modifications to the liner design <br /> occurring subsequent to the approval of the design by Owner shall be submitted <br /> to Owner for review, comment, and approval at least sixty (60) days before the <br /> start of implementation of any modifications to the approved design. <br /> fi, The Reservoir side slopes shall be designed by a Colorado registered <br /> engineer and be submitted to Owner for its approval ninety (90) days prior to the <br /> start of construction of any part of the Cell slopes. The Cell side slopes shall <br /> have a slope of 3H.IV or flatter, have adequate seepage stability to prevent <br /> erosion when the reservoir is empty, and be designed have a slope stability <br /> factor of safety(FOS) of not less than the following: <br /> Steady state seepage with a full Reservoir— 1.5 <br /> Steady state seepage with an empty Reservoir— 1.5 <br /> Rapid drawdown from full to empty Reservoir at an evacuation rate of 25 <br /> cts- 1.4 <br /> Rapid drawdown from full to empty Reservoir at an evacuation rate of 50 <br /> cfs— 1.2 <br /> Earthquake with a full Reservoir— 1.0 <br /> Earthquake with an empty Reservoir- 1.0 <br /> Any modifications to the liner or slope design occurring subsequent to the <br /> approval of the design shall be submitted to Owner for review, comment, and <br /> approval at least sixty (60) days before the start of implementation of any <br /> modifications to the approved design. <br /> iii. The design documents submitted to Owner shall include, at a minimum, <br /> the following: <br /> a) A plan drawing that shows the final proposed ground surface <br /> topography of the site. <br /> b) A profile drawing that shows the top and bottom elevation of the <br /> clay liner and key depth into bedrock. <br /> Construction Agreement—Zadel(v.4-24-08) <br /> 7 <br />