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c''- ~ • <br />The revision proposes to reduce the frequency for laboratory analysis for the #1 mine from <br />semiannual to annual for the #2 mine from quarterly to semiannual for the #2 mine. This <br />revision did not gi the s fficient justification for the reduction, but the Division concurs with the <br />proposal because sampling on a monthly basis would detect any abrupt change in the water <br />quality. Previous monitoring has characterized the seasonal fluctuations. In the future, if the <br />hydrologic monitoring shows that there is a trend towazd poorer water quality, the Division may <br />require a return to a higher monitoring frequency. <br />The revision proposes to delete spoils spring #2 located adjacent to spoils spring #1. The 94 <br />annual hydrology report showed that this spring had not dischazged in 1994 and since this spring <br />is located adjacent to spring #1 and appears to issue from the same source, the-Division feels that <br />deletion of this spring from monitoring is acceptable. <br />This revision proposes to delete wells GW-N19, GW-N20, GW-N21 from the monitoring <br />program at the New Horizon Mine #2. The Division agrees with the proposal; there are other <br />wells that satisfactorily monitor up-gradient and down-gradient locations from the mine <br />disturbance. <br />There are 10 surface water monitoring stations at the New Horizon #2. One station is proposed <br />to be deleted SW -N4 because its monitoring is duplicated by other sites (SW-NI and SW-N3). <br />The Divisio~rconcurs with this proposal. <br />The revision proposes to reduce the chemical,pazameters in the laboratory analysis. The Division <br />cannot concur with this proposal at this time because the request does not contain sufficient <br />demonstration that "past analyses have shown no abnormality." The revision should be more <br />specific. How do results of past monitoring compare to water quality standards? Also, the <br />Division would like monitoring to include major ions and Manganese. <br />If you have any questions please feel free to contact me. <br />Sincerely, <br />// <br />Randall P. Price <br />Reclamation Specialist <br />cc: Ross Gubka <br />Dan Hernandez <br />Harry Ranney <br />