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Ltr/Revw Bsln Env Data - 6 - July 2, 1986 <br />The springs referenced in the response are not identified in the spring <br />and seep inventory or on Map 2.04,7-1 A. The locations and estimated <br />flows should be provided as baseline data in the application. <br />The surface facilities are to be located in the Dry Gulch basin. The <br />effect of the roads, structures and refuse pile on the hydrology of the <br />basin need to be addressed. The sediment ponds will effectively <br />control sediment generated from the disturbance but will have limited <br />effect on undissolved constituent concentrations. What effect will the <br />leachate from the refuse pile have on water quality in the Dry Gulch <br />basin? Changes in water quality and runoff amounts and timing need to <br />be included to determine the probable hydrologic consequences of mining <br />in the Dry Gulch basin. <br />(C). SAR Data. The response to the request for additional <br />information on AR values derived from the U. S. Bureau of Reclamation <br />data is adequate. The identification of this site, however, which is <br />described as coincident with station S-5 does not correspond as <br />stated. Station S-5, S-4, D-1, La-1, Li-1, and He-1 need to be <br />identified on Map 2.04.7-2. This will also allow the footnotes to the <br />tables which reference the sites to be accurate, and will be consistent <br />with Rule 2.10 (Maps and Plans). <br />(D). The response to the characterization of water quality in Layton <br />and Lipan Washes as being similar to Garvey Canyon and Coal Gulch is <br />not consistent with the statement that data from the monitoring program <br />support this conclusion. A review of the data indicates widely <br />variable concentrations of suspended solids and total dissolved solids <br />between stations. A redefinition of this statement is required to be <br />considered an adequate response. <br />4. Protection of the Hydrologic Balance 2.05.6(3) <br />(A). St~oc~k~onds. The information provided on identification of <br />functions s~ toc~nds, description of the effect of the proposed <br />operation on these and mitigative measures is adequate. <br />2A-E Probable H drolo is Consequences. The responses to items 2A-E are <br />deferrer untr a'T- n operations an rec amation plan element is submitted <br />with the application. <br />5. Alluvial Valley Floors 2.06.8 <br />A determination by the Division on designation of alluvial valley <br />floors is not required or provided at this time in the review of <br />environmental baseline data. The following comments are provided on <br />the responses to preliminary adequacy review comments presented in Yol. <br />II-A and follow a similar format. <br />