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lJ <br />December 1992 7be Rorkcastle Company * Grasry Gap Mine * 1992 Annual Hydrology Report • 2 <br />2.0 WATER MONITORING <br />1 <br />According to the various permits in place for the Grassy Gap Mine, surface and groundwater <br />' monitoring must be conducted according to the schedule and parameters described in Table 1, <br />Monitoring Schedule. The location of the monitoring points are presented on Map 1. <br />1 <br />~1 <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />1 <br /> <br /> <br />unnwmuvr <br />i rnonr rp, <br /> 'TABLE 1 <br />MONTIORING SCFIEDIJLE :. . <br />SITE FIELD . LABORi1T.ORY. I:ABORATORY . . <br /> MEASiJAEMF.N7S . ANAI:YSES SCIdEDULE. . <br />SW-2,3,4 Quarterly Full suite &TSS June & October <br />MW-3 Quarterly Ful! suite October <br />SPW-2,5 Quuterly Full rune Juoe <br />SEEP & Annually Uon June <br />SPRING (Pit 5 only) <br />NPDES-(001, - pH & SS (Monthly) Montbly <br />002, 003, 005) TDS (Quarterly) <br />SW -Surface water location <br />MW -Monitor well <br />SPW -Spoil well <br />SS -Settleable Solids <br />TDS -Total Dissolved Solids <br />TSS -Total Suspended Solids <br />The measurements taken in the field include flow rate (or water depth), temperature, pH, and <br />conductivity. The laboratory analyses are described as a "full suite" in the mining permit. The <br />°full suite° of analyses includes the following: <br />• Bicarbonate as CaC03 <br />• Sulfates <br />• Sodium <br />• Calcium <br />• Magnesium <br />• Sodium Adsorption Rate (SAR) in water <br />• Iron (total recoverable) <br />• Nitrate and Nitrite <br />• Ammonia <br />• Lead <br />• Mercury <br />• Total Dissolved Solids ('TDS) <br />TSS is analyzed in addition to the above list for all surface water samples, that is, on all samples <br />except for MW-3. <br /> <br />ACZ /nc. * P.O. Box 774018 * Steamboat Springs, Colorado 80477 * (303J 879-6260 <br />