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Ms. Christine Johnston Mountain Coal Company Page 2 December 9, 1996 treatment facility. Diversion or discharge will minimi~.e disturbance to the hydrologic balance, prevent material damage outside the permit azea, and does not injure vested water rights. Sylvester Gulch, Upper Dry Fork Flume and Lick Creek Flume all tend to dry up by September. To avoid the loss of data, please revise the permit document to reflect earlier sample dates for the third sampling round at these locations. Move the sample dates up to July or August so that the required three (3) sample sets of data can be collected for these locations. • The Division is requesting that the laboratory analytical data sheets and associated chain-of-custody forms be provided in future AH}2s. Please revise the permit document to include a provision for appending the laboratory data sheets and chain- of-custody forms to the AHR, beginning with the Water Year 1996 AHR. • The chain-of-custody documents that accompany every shipment of samples to the analytical laboratory should include a complete list of the specific analyses requested for each sample shipment. If appropriate, please revise the permit document to reflect this important Geld documentation procedure. • As a quality assurance/quality control check on the laboratory analytical data, add anion and cation balances to the analytical program for surface water samples. Please revise the permit document appropriately to reflect this change. • Stream discharge measurements at the North Fork Lower station should be added to the water quality monitoring program. Flow measurements should be recorded each time a water quality sample is collected and should be done concurrent with a measurement at the North Fork Upper station. Please revise the permit document to incorporate this request. The Probable Hydrologic Consequences (PHC) section of the permit document does not adequately assess the current groundwater inflow conditions being experienced within the mine. It is recommended that the PHC portion of the permit document be updated and revised to include a characterization of the recent high volume mine inflows. The Division acknowledges that the mine inflow conditions are currently under careful study by MCC. MCC has contracted Wright Water Engineers to update the Probable Hydrologic Consequences (PHC) portion of the permit document to accurately reflect the changing mine inflow conditions. This PHC update will be submitted to the Division as a technical revision to the permit document.