Laserfiche WebLink
treatment options and techniques and to implement operational <br />modifications to produce effluent that meets CPDS effluent limitations <br />and does not result in non -attainment of the applicable selenium <br />standard in the respective receiving streams. <br />In 2016, Technical Revision 9 made the following revisions to the <br />hydrology monitoring plan: <br />1. Monitoring at Spoil Spring 6 (SSSPG6) was moved to the Spoils <br />Sping 6A location. Spoil Spring 6A monitors the same drainage downstream <br />of Spoil Spring 6, where it meets the haul road. Access to the Spoil <br />Spring 6 location is down a very steep (and therefore potentially <br />dangerous) trail. <br />2. Monitoring at Spoil Spring 7 (SSSPG7) was discontinued. This <br />spoil spring issues from old Seneca II Mine workings in the Pond 002 <br />basin. It was buried during construction of the Lower Sump for the Sage <br />Creek Mine. <br />3. Monitoring at wells COV11, COV23, COV2633, CW23, CW2632, SW17, <br />SW19, SGAL71 and SSP27 was suspended until mining resumes. Monitoring <br />frequencies for the remaining wells were changed to annual for bedrock <br />wells, and semiannual for alluvial and spoil wells <br />4. Discontinue monitoring at Outfall 004 (Pond 004 on Cow Camp Creek <br />in the Fish Creek basin). The new (2016) NPDES permit has dropped <br />monitoring at this outfall, but has now required monitoring at two spoil <br />springs above this pond: Spoil Spring 1 (SSSPGI = Outfall 006) and Spoil <br />Spring 2 (SSSPG2 = Outfall 005). Those two spoil springs will be <br />monitored per the NPDES permit requirements. <br />5. For all streams and springs, added a flow qualifier that only <br />field parameters (temperature, conductivity and pH) will be monitored <br />(that is, no lab sample) when the flow is less than 1 gallon per minute. <br />3 <br />