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MONTGOMERY WATSON »~ ~IIIII~~~II~1 ~II <br />© Mining Group <br />RECEIYEfl <br />May 4, 1998 <br />MAY 0 6 ~ggg <br />Mr. Tom Kaldenbach <br />Environmental Protection Specialist Division of Atinerat3&GeabQy <br />Division of Minerals and Geology <br />1313 Sherman St., Rm 215 <br />Denver, CO 80203 <br />RE: HG Coal Shrub Maintenance Work; Permit No. CO-80-003 <br />Dear Mr. Kaldenbach: <br />As you know, Hayden Gulch Coal Company (HGCC) intends co perform limited <br />maintenance work within the shrub augmentation areas during the next several months <br />in order to enhance the survival rate of existing woody plants. Maintenance activities <br />will consist of weed control work and possible irrigation of plants planted last summer. <br />More specifically, weed control will include installation over the next few weeks of the <br />remaining weed barrier material not deployed last summer and on-going herbicidal or <br />mechanical control of noxious weeds. At this time, no irrigation is planned but if <br />prolonged dry conditions occur such that high stress conditions are created for the <br />"replacement" plants (i.e. those planted in 1997), limited irrigation may be performed to <br />insure "replacement" plant survival. <br />It is our understanding that none of the planned work would cause an extension of or <br />re-trigger the current liability term associated with the shrub augmentation parcels. If <br />this understanding is incorrect, we would appreciate a written communication from the <br />Division to that effect as soon as possible. We intend to initiate weed control efforts <br />this week, weather permitting, beginning with placement of the remaining weed barrier <br />material. <br />Please call me if you have any questions. <br />Sincerely, <br />9hr~.~~~111~_ <br />Michael R. Neumann <br />Sr. Project Manager <br />cc:Bob Medler, W.R.Grace <br />Jim Bethune, MW <br />P.O. Box 774018 Te I: 970 879 fi260 <br />1475 Pine Grove Boad Fax: 9700799040 Serving the Warld's En vironmentel Needs <br />Steamboat Springs, Colorado <br />00477 <br />