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/11-Sep-2009 10:58 AM Asphalt Paving 303 279 6216 Zi.j <br />fir OS ?? STATE OF C OLORADO <br />PATER DIVISION ONE <br />r wOFFICE OF THE STATE ENGINEER of-? <br />Dlvlsion of Water Resources <br />Department of Natural Resources <br /> <br />'" <br />** <br />` <br />? <br />810 9 <br />Street, Suite 200 x 1876 + <br />Greeley, Colorado 80631 <br />Phone (970) 352-8792 Bill Owens <br />Fax (970) 392-1 B16 Gove or <br />www.water.state.co.us Russell George <br /> Executive Director <br /> Hal D_ Simpson, P.E_ <br /> State Engineer <br /> June 9, 2006 <br /> James R. Hall, P.E. <br /> Division One Engineer <br />Sean Harvey, Geologist <br />Lyman Henn, inc. <br />110 1e Street, Suite 900 <br />Denver, CO 80202-5202 <br />Re: ?' Il hg of Perry Pit <br />NE%, Section 25, TIN, R67W, & NW'/4, Section 30, T1 N, R66W <br />Water Division 1, Water District 2 - DMG #90-098 <br />Dear Sean: <br />I <br />The purpose of this letter is to approve the lining of the above referenced site. This approval is based on the <br />site inspection conducted on January 19, 2006 and on the information provided by you under cover letters <br />dated February 1, March 15, April 4, and April 17, 2006. The estimated site groundwater and precipitation <br />inflows and the outflows due to pumping and evaporation indicate that this site has been lined to the <br />design standard referenced in the August, 1999 State Engineer Guidelines for Lining Criteria for Gravel Pits. <br />Meeting the design standard requires that all water inflows and outflows for this site must be <br />accounted for on at least a monthly basis. <br />Please call me if you have any questions. <br />Sincerely, <br />David L. Nettles, P.E. <br />t Assistant Division Engineer <br />Perry PitEastUne0K.doc <br />i <br />CC: Bob Stahl; Water Commissioner <br />Suzanne Sellers, Denver SEO