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iii iiiiiiiiiiiiiiii ~~ <br />STATE OF C.ULV~, J <br />MINED LAND RECLAMATION DIVISION oF.~~ <br />Department of Natural Resources ~~~~~ <br />7373 Shemwn St.. Room 275 <br /> <br />•; <br />„' 1g <br />Denver, CO 80203 ... <br />~„ <br />303 866 3567 ~ <br />~~~. <br />Fax 303 632-6106 <br />Rq Ronp. <br />Gwena <br />Fre° F gams <br />May 16, 1990 °i"s°^ °'"'°' <br />Ms. C]aire Semmer <br />Colorado Yampa Coal Co. <br />29587 Routt County Road No. 27 <br />Oak Creek, CO 80467 <br />Re: Minor Revision No. 10 - Mine No. 3 - C-84-062 <br />Dear Ms. Semmer: <br />On May 7, 1990, we received the above-referenced minor revision application. <br />We cannot approve the application until the following concerns are addressed. <br />Our proposed decision must issue no later than May 17, 1990, unless an <br />extension is requested. <br />1.) The proposeu spoil spring monitoring plan is slightly different from the <br />existing plan. The existing plan specifies that during the annual spring <br />survey, all observed springs will be mapped, and monitored for field <br />parameters. It also specifies that if a spring is flowing at a rate <br />greater than 35 g.p.m., then a full suite will be taken (Exhibit 15, <br />page 15-26), and the site will be monitored in accordance with the spring <br />monitoring plan. The proposed plan (page Exhibit 15-7) indicates that <br />the site will be revisited during the month following the survey (June), <br />then sampling will initiate. It is possible that by June, flow will have <br />decreased to the point that sampling is no longer possible. <br />Please revise the plan to clearly indicate that if a spring is observed <br />to be flowing at a rate of at least 35 g.p.m. during the May survey, then <br />the first of the required full suite samples will be taken at that time. <br />2.) Please provide the Map 4b at this time. <br />Thank you for your cooperation, <br />Si <br />a A. Berry <br />amation Specialist <br />DAB/ern <br />cc: Jim Stevens, MLRD <br />7162E <br />