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• III IIIIIIIIIIIII III <br />999 <br />' 9 - <br />• UNDERGROUND <br />ENGINEERING & <br />ENVIRONMENTAL <br />SOLtfITON6 <br />Haley & Aldrich, Inc. <br />110 16th Street <br />Suite 900 <br />Denver, CO 80202-5202 <br />Tel: 303.534.1100 <br />Fax: 303.534.1777 <br />9 November 2000 <br />File No. 20367-000 <br />Email: DEN®HaleyAldrich.com <br />RECL9°~~® <br />NOV 1 3 2000 <br />Mr. Gregg Squire <br />Environmental Protection Specialist Division of Minerals and Geology <br />Division of Minerals and Geology <br />1300 Sherman Street, Suite 200 <br />Denver, Colorado 80203 <br />Subject: Permit No. M-2000-082 -East 8th Street Operation <br />Dear Mr. Squire: <br />Haley & Aldrich is providing this letter on behalf of Aggregate Industries West Central <br />Region, Inc. in response to your technical adequacy review of the above-referenced permit, <br />dated September 26, 2000. The following responses are formatted in the same order as your <br />letter. <br />Exhibit D -Mining Plan <br /> 1. According to test borings, groundwater was encountered at approximate depths of eight <br /> (8) to ten (10) feet below the surface at the time of initial exploration. Water levels in <br /> this area are subject to change due to seasonal variations and fluctuations in the flow of <br />oEFl~s the Poudre River, which meanders along the south boundary of the gravel pit side. <br />Boston <br />Mnssadmscrts Exhibit E -Reclamation Plan <br />Cleveland <br />o{rio 1. Final reclamation as an open lake or water reservoir will be determined by the owner of <br />Hartford the property. Should the owner decide to have the site reclaimed as a storage reservoir, <br />Cnmrecnrrrt the construction of the liner will be in conformance with the State Engineer Guidelines <br />1_os Angeles for Lining Criteria for Gravel Pits, July 1999. A copy of the SEO's letter approving the <br />cnriforrrin proposed liner design and a copy of the design and specifications will be submitted to <br />Manchester DMG. <br />New Hnmp.Jrire <br />Newark 2. No groundwater will be exposed without approval of a Substitute Supply Plan permit by <br />New /ene~y the Office of the State Engineer and obtaining of an associated well permit. In the event <br />Portland that accidental exposure of groundwater occurs, the operation will commit to backfilling <br />Mrri,w the exposed water to 2 feet above the water table and notifying the"Office of the State <br />aochester Engineer and DMG immediately. <br />New ]irrk <br />San Diego <br />Ca(i/ornin <br />San Francisco <br />Cnli/nrnin <br /> <br />Washington \\DEN\common\PROlECrS\20367 Greeley\Response mTech Rev2.d« <br />District of Coluudrin <br />e.,m,a ~. ~.v,w rvm~ <br />