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_~ <br />,l <br />.- <br />~ ~ ~ iiiiiiiiiiiiiiiiiii <br />RECEI~IE~ <br />Department of Energy JAN 25 <br />1998 <br />ROCKY FLATS FIELD OFFICE <br />P O 60% 928 ~ ... •I :Mlneral$ Ft G80109Y <br />GOLDEN. COLORADO 804020928 <br />98-DOE-0675 l <br />Mr. Tom Schreiner <br />Colorado Division of Minerals and Geology <br />1313 Sherman Street, Suite 215 <br />Denver, CO 80202 <br />Dear Mr. Schreiner: <br />Thank you for forwarding copies of four Mineral Program Inspection Reports issued by <br />the Colorado Division of Minerals and Geology on October 1, 1997, for Lightweight <br />Aggregate Mine/Westetn Aggregates; Conda/McKay Bluestone Pit/Western Aggregates; <br />Rocky Flats PidChurch Ranch; and Church Pit/Lakewood Brick and Tile Company. <br />Each of the Mineral Program Inspection Reports includes the observation that infestation <br />of diffuse knapweed at the mining sites either is a problem or may become a problem in <br />the future. The Inspection Reports indicate that each mining operator must submit an <br />application for a technical revision to the mining permit to address the control of diffuse <br />knapweed and any other weeds. <br />The Department of Energy (DOE) is the surface owner of property at the Rocky Flats <br />Environmental Technology Site (Site), which is both above and adjacent to the mining <br />sites that are the subject of the Inspection Reports. As a surface owner and adjacent <br />property owner, DOE would appreciate the opportunity to review these and any future <br />proposed permit revisions that aze submitted to your office. The DOE would also like the <br />opportunity to comment on proposed permit revisions. In this regard, it would be useful <br />if your office could provide the undersigned with copies of the permits that are the <br />subject of the Inspection Reports, so that DOE can assess the potential impacts of <br />proposed revisions. The DOE would also like the opportunity to be present during all <br />inspections of Site subsurface or adjacent mining operations. <br />With regard to the Site's own weed control efforts, the DOE Rocky Flats Field Office <br />(RFFO), through its contractor. Kaiser-Hill Company, L.L.C. is applying an integrated <br />weed control program within the Site buffer zone which includes the application of <br />herbicides. The RFFO intends to cooperate with nearby landowners in controlling <br />