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<br />• STATE C~ C III~IIIIIIIIIIIIIII~ <br />DIVISION OF MINERALS AND GEOLOGY <br />I7rpdnmrnl .e Ndlural Hceuurec+ <br />I l l 1 tihr+mdn $L, Kuum !1 S <br />Denver. (ulntutln HII!11 <br />Vhunr. e}II41156fi~ 4ih7 <br />Fnx: l ul n If 1 ~-u nu. <br />Noven[ber 12, 1997 <br />~I~ <br />I~EPAILTMENT OF <br />NATURAL <br />RESOURCES <br />Huy Renew <br />fuvrrnur <br />lanuw 5 Lurhhrad <br />E art uln'r Duwlar <br />Martin Jones <br />Western Aggregates, -nc. <br />11728 Hwy 93 <br />BouldL:r, CO 80303 <br />RE: Western Aggregate Pits -Weed Control, Corrective Actions <br />P=emit No. M-94-045 Section 16 Sand & Gravel Pit <br />Permit No. M-88-108 Lightweight Aggregate Mine & Plant <br />Deaz D~Ir. Jones: <br />Mir h.ud B Lunt; <br />Urvivon Director <br />In resFlonse to recent discussions between you and the Division concerning corrective actions <br />listed i.n the Division's October 21, 1997 inspection reports for the Section 16 Sand & Gravel Pit <br />and the Lightweight Aggregate Mine & Plant, I have listed below a clarification of the requested <br />corrective actions. It is the Division's position that these corrective actions aze necessary to <br />ensure that the permitted sites are in compliance with Rule 3.1.10(6) of the Construction Ivtaterial <br />Rules & Regulations. I have attached a copy of Rule 3.1.10(6) for your review. <br />CORRECTIVE ACTIONS <br />Westem Aggregates, [nc. will submit an application for a technical revision for each permitted <br />site by December 31, 1997 which consists of a weed management plan for diffuse knapweed and <br />any other prohibited noxious weed species present at the Section 16 Sand & Gravel Pit and the <br />Lightweight Aggregate Plant & Mine. The weed management plan(s) will include a list of <br />control methods to be implemented, a schedule for implementation of the control methods, and a <br />monitoring program for evaluating the success of control methods used. Western Aggregates, <br />Inc. will make a reasonable attempt to implement control measures, such as chemical or <br />mechanical control, at each permitted site during the 1998 field season to facilitate the control of <br />diffuse: knapweed and any other noxious weeds present. Western Aggregate, Inc. will submit a <br />description of weed control methods that were applied at each permitted site during the 1998 <br />field season in the Annual Report(s) for 1998. <br />