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February 2004 Hayden Gulrh Terndnal, Lrr. * Hayden Gukb Loadout - 2003 Aroma/Hydrology Report I Page 4 <br />' 3.0 HYDROLOGIC MONITORING <br />' 3.1 SAMPLING AND MEASURING TECHNIQUES <br />Field conductivity and pH meters were calibrated prior to each days use. The conductivity meter was <br />I' calibrated using a potassium chloride solution with an electrical conductivity in the 78 to 6,668 micro- <br />Siemens per centimeter (µS/cm) range. The pH meter was calibrated using NBS traceable buffers <br />with pH values of 7.0 and 10.0 units. Static groundwater level measurements were taken with an <br />I' electronic water level indicator. Surface water flow was measured with a Swoffer Model 2100 portable <br />velocity meter. <br />Table 1, CDPS Analytical) s.rt, presents the parameter list for the CDPS samples. Table 2, Surface Water <br />Analytical Lstt, shows the laboratory analyses for the surface water samples. Table 3, Groundwater <br />Analytical Lirt, presents the laboratory analyses for the groundwater samples. Analyses were performed <br />by ACZ Laboratories, Inc. (ACZ) of Steamboat Springs, Colorado. ACZ performs all analyses by <br />' Environmental Protection Agency (EPA) or equivalent methods. Samples were hand-delivered to the <br />lab the day of collection in an iced cooler. <br />3.2 SURFACE WATER DATA <br />3.2.1 CDPS Monitoring <br />There are two CDPS monitoring sites at the Loadout, the Truck Loop Pond (Outfa11001A), identi&ed <br />as NPDESIH in the data summary tables, and the Rai] Loop Pond (Outfall 002A), identified as <br />NPDES2H in the data summary tables. The locations of the two CDPS monitoring sites are shown <br />on Figure 1, Monitoring Site Location Map. <br />During 2003, no discharge was observed at either site. Appendix A, CDPS Water Quality Data, <br />includes a listing of water quality statistics for previous years for the Loadout CDPS sites. <br />Per the requirements of the CDPS permit, No. COG-850008, quarterly Discharge Monitoring Reports <br />(DMRs) were submitted to the appropriate regulatory agencies. Copies of the 2003 DMRs are <br />provided in Appendix B, CDPS Discharge Monitoring Repom. <br />3.2.2 Stream Monitoring <br />Two stream monitoring locations were sampled in [he vicinity of the Loadout along Dry Creek. <br />Permit specified monitoring consis[s of semi-annual (spring and fall) monitoring for flow and water <br />quality. The first semi-annual event occurred on June 25, 2003. The second event did not occur in <br />the fall of 2003. Instead a sampling event, on January 21, 2004, resulted in a sample from HGSDl. In <br />January 2004, HGSD3 was frozen and, therefore, it was not sampled. The upstream surface water <br />monitoring site (HGSDl) is located approximately 1.5 miles upstream of the Loadout permit <br />boundary. The downstream surface water monitoring site (HGSD3) is located immediately <br />downstream of the Loadout facility area. A third location, HGSD2, which was downstream of <br />HGSD3 vas abandoned in 1995. The locations of the current and former surface water monitoring <br />stations are shown on Figure 1, Monitoring Site Location Map. <br />Surface water quality data for 2003 are included in Appendix C, Surface Water,Qualit)I Data. A review of <br />the laborarory analyses for samples collected during the June monitoring event, shows that the surface <br />water constituents from HGSDl and HGSD3, are generally similar to previous years. New minimum <br />concentrations were reported for barium (0.022 mg/1), total iron (0.08 mg/1), total manganese (0.06 <br />mg/1) and pH (7.77) in June 2003 at HGSDI. New maximum concentrations were recorded at this <br />rb111`1 / * 7475 Pine Grove Rood .Suilr 109 *.f'/rmnboat,Springt, CO 80477 * (970f 879-(260 <br />ill'9~Xx]~FU] IhAn I(M Xg1.911tt 1t/w <br />ll'/l~//Nb <br />