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~~I I~~II~~I~III~ II~ <br />PEABODY COAL COMPANY <br />ROCKY MOUNTAIN DIVISION <br />10876 EA9T HARVARD AVENUE <br />SUITE 400 <br />DENVER. COLO RADO 80881 <br />(808) 8976809 <br />March 5, 1984 <br />REGEII~EG <br />I'd11R ! 1~°1 <br />Mr. Jim Herron <br />Colorado Mined Land Reclamation Division <br />423 Centennial Building <br />1313 Sherman Street <br />Denver, Colorado 80203 <br />Dear Jim: <br />[TINED LAF,D FECLP.6S?~;~., ~I~9SIOFI <br />(;010. I1d,ul. 01 Frd(b'r,31 K21;;c;C@S <br />I am writing to inform you of our intention to slightly modify the <br />baseline hydrology monitoring program at our Seneca II-W property <br />in Routt County. We have measured water levels and sampled wells <br />at lease once per quarter since 1980. Unless you object, we intend <br />to skip groundwater monitoring this winter quarter and the following <br />winter quarter since we believe we have sufficient data and because <br />wintertime monitoring is difficult and potentially hazardous. We <br />will continue groundwater monitoring in the spring, summer, and fall <br />quarters until we have been granted a permit to mine at which time <br />we will initiate the monitoring program detailed in Section V.A. of <br />the forthcoming revised Seneca II-W Mine permit application. <br />We likewise intend to stop monthly site visits to surface water sites <br />56-3 and CG-1 during the winter months since the three years of baseline <br />data indicate that these sites are typically frozen until late April <br />or early May. We will continue monthly visits to these sites during <br />the rest of the year. All other surface water monitoring sites wilt <br />continue to be monitored the year round. <br />Please contact me if you have any questions. <br />Very truly yours, <br /> <br />Norm Nielsen <br />NN:kt <br />cc: Slade Dingman <br />Dennis Jones <br />Jim Lunan <br />Jay Mednick <br />Tom Wainwright <br />7 <br />