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ii i i ii i ii i ii iiii iii <br />STATE OF COLORADO <br />Roy Romer, Governor <br />W <br />DEPARTMENT OF NATURAL RESOURCES <br />MINED LAND RECLAMATION DIVISION <br />FRED R. BANTA, Dlreetor <br />March 24, 1988 <br />Mr. David R. Gossett <br />Kerr Coal Company <br />1 Tabor Center, Suite 2500 <br />1200 - 17th Street <br />Denver, Colorado 80202 <br />Re: 1987 Marr Strip Annual Hydrologic Report <br />File No. C-80-006 <br />Dear Mr. Gossett: <br />The Division has reviewed the Marr Strip Mine 1987 Annual Hydrologic <br />Report, submitted in compliance with Stipulation R1 of the approved <br />permit. The following comments are divided into three <br />sections--ground water, surface water, and soil moisture testing. <br />Ground Water <br />From a review of the pernlit text and revisions it is apparent <br />that there are several Inconsistencies in the permit pertaining <br />to the hydrologic monitoring program. The permit text <br />(780-108) states that groundwater wells will be sampled in late <br />spring and fall, and analyzed for the constituents shown on <br />Table 61. Table 61(b) titled "Kerr Mine Area Hydrologic <br />Monitoring Schedule - Water Quality" shows that ground water <br />monitoring wells will be sampled quarterly for the following <br />constituents: 504, COg, HCOg, Na, K, Ca, Mg, CI, N, and <br />N02. <br />Please revise table 61(b) so that the sampling frequency for <br />the above listed parameters corresponds to what is outlined in <br />the permit text. <br />423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203-2273 Tel. (303) 866-3567 <br />