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~_ _ <br />_. - <br />~_ <br />httieApplegate,lnc. <br />Consultants for Land, Mineral and Water <br />November 17, 1999 <br />Office of Mined Land Reclamation <br />Attn: Mr. Carl Mount <br />Division ofMinerals.and Geology <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denvar, Colorado 80203 <br />~I I I I~ I I~ ~ I~ I~~~ ~I~ <br />'~"R - oo a <br />NO F~Fi~Fc <br />~~ <br />a, 1999 <br />RE: Technical Revision [o.Hall Irwin Construction Company Permit No. M-83-090 <br />Dear Mr. Mount: <br />Per your request of Hall Irwin, we have prepared a Technical Revision to their La Poudre <br />Pit Permit No. M-83-090. This Technical Revision includes the construction of a <br />spillway between the two easternmost reservoirs, and a weed management plan. A <br />Technical Amendment, following shortly, will address the change of final reclaimed land <br />use to "Developed Water Resource." <br />Damage from the Cache la Poudre flood last Spring exposed a buried Sinclair Pipeline <br />Company pipeline that runs between the reservoirs where the spilhvay will be <br />constructed. Enclosed is the Technical Revision, as well as a design report with figures, <br />supporting calculations, aftd model output for the desig~t of the spillway. Also included is <br />a letter from Sinclair Pipeline Company stating their review and approval of the spillway <br />design. The new spillway will not affect the delineation of the Poudre River floodway or <br />floodplain. <br />We appreciate your consideration of this Technical Revision. Hall Irwin is ready to <br />proceed with construction once [he DMG approves the revision, and is committed to <br />having the spillway completed before the Spring of 2000. Please feel free to contact us <br />should you have any questions. <br />Sincerely, <br />Tuttle Applegate, Inc. <br /> <br />Dana Moore, EIT <br />11990 Grant St. • Suite 304'• Denver, CO 80233 5441 Boeing Drive. • Suite 200 • Loveland, CO 80536-8855 <br />(303) 452.6611 • Fax (303) 452-2759 (970) 461-9889 • Fax (970.) 613-1177, <br />