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10FTHERN COAL C0.`>PANY RESPONSE TO CAfLR JUPIE 25, 1981 ADEQUACY LETTER <br />• <br />2.04.7(1) Ground Water Information <br />the applicant should submit all water level and eater quality data collected to <br />date as part of their application materials. This is needed to quantify <br />seasonal variations, <br />Response: Northern a, preciates the need for this information and understands <br />that the staff should have access to it. However, the volume of information <br />being kept by Northern is immense, amounting to some 2,500 pages in 3 volumes. <br />It is very expensive to reproduce as many of the pages are oversized and each <br />set must be updated very carefully to keep the unnumbered pages in proper <br />sequence. S•]e would like to suggest that we make a copy available to the State <br />for review to be turned back to Northern for proper updating by our consultant. <br />2.04.7 (2) Surface Water Hydrology and <br />2.05.6 (3) Protection of Hvdrologic'Balance <br />1. The application details an extensive surface water monitoring system on <br />page G-8 to G-15. All information, for all stations, must be organized and <br />included in this application, The applicant should discuss any trends, observations, <br />and discrepencies observed with the data. Whenever meaningful, the applicant <br />should displa}• seasonal trends in both quantity and quality by graphical methods <br />in addition to submitting the raw data. The applicant's statement of probable <br />• hydrologic effects should be modified to include any changes in predictions the <br />~ data might support, or show how the additional data supports the applicants <br />'. previous predictions. <br />Response: Please see the response to the question above, 2.04.7(1)"Ground Water <br />Information. _ _. <br />2. tfap PfE-7938-08 1/1 indicates two surface water monitoring sites labelled <br />HFS-2; please distinguish between these two stations, Is one of these stations <br />HFS-3? The water quality data in tables G-15, 16, and 17 must be compared with <br />the property sampling locations. <br />Response: Stations HFS-1, HFS-2 and HFS-3 are correctly designated on Exhibit <br />G-1 revision date 2/20/8L• - <br />3. All available information on the quality of water being pumped and proposed <br />to be pumped, from the underground mines must be submitted in this application. <br />Response: All available information on the-quality of eater being pumped from <br />the Rienau tio. 2 19ine and Northern'No, 1 Mine is submitted as FSch>_bit P-1. <br />The quality of eater proposed to be pumped from the Rienau No. Z dine will be <br />such the sane as the quality of water being pumped presently. The water being <br />• pumped from the Northern No. 1 Mine has improved in quality, as operations within <br />the mine were phased to standby. <br />1 <br />