2014-12-19_REPORT - C1981014 (2)

Home Browse Search

June 2000 4 Energy Fuels Coal, Inc. 1999 Annual Hydrology Report QUARTERLY HYDROLOGY MONITORING PROGRAM DATA SUMMARY (Period January 1, 1999 through December 31, 1999) Lr 1i� • This section of the 1999 AHR presents all surface and ground water data collected at the Southfield Mine from 1979 through the end of the reporting period. Discussion of these data, including potential impacts and trends, follows below. Surface Water Field and laboratory data collected from approved monitoring points on Newlin, Oak, Magpie and Second Alkali Creeks are shown on water quality Tables 10, 11, 12, 13, 14, 15, 16, and 17. Stream flow measurements for these monitoring locations are summarized on Table 9. Monitoring of upstream and downstream locations on Newlin, Magpie and Oak Creeks was continued during the reporting period. EFCI voluntarily began monitoring two locations on the referenced creeks during the second quarter of 1997. Data from the additional monitoring is included in the stream quality and quantity data summary tables. In addition, EFCI no longer includes data from the Newlin Creek monitoring point prior to second quarter of 1997 since the single monitoring location was located between the two current monitoring points. Data from the original Newlin Creek monitoring point (NC -1) is included in prior AHR's. Stream flows occurred during the spring months in response to precipitation events during the reporting period. Measurable flows were monitored in all the streams. All monitored creeks flowed during the 2nd quarter due to heavy rains received during early Spring. In Oak Creek, flows persisted during the entire reporting period. Similar to previous reporting periods, Second Alkali Creek exhibited infrequent, low flow patterns in response to precipitation events. Review of the accompanying water quality data indicate no unusual or harmful trends. Data for Oak Creek monitoring indicate slightly increasing levels of TDS, conductivity, sodium and sulfate downstream as compared to the upstream location. All other parameters were similar for the upstream and downstream monitoring locations. The data for Newlin Creek show no significant changes from the upstream and downstream monitoring locations, and are comparable to ranges found in previous monitoring periods. No deterioration of Newlin Creek or Oak Creek resulting from mining is apparent from the water quality data collected to date.