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December 23, 1999 <br />Page 2b' <br />• 5.9.1 Wnter Qtinlity Dnln <br />Water quality data will be compiled as each data point is acquired. The environmental <br />coordinator will review these data at each update. Once the ambient data has been assembled, <br />numeric protection levels and `practice-based' permit conditions will be established by the BLM <br />with respect to protection of the groundwater. In the event that corrective action is indicated, the <br />following sequence of procedures will be initiated. <br />1. The sample(s) will be submitted for re-analysis to all reporting laboratories. <br />2. Samples will be recollected and submitted for analysis. <br />3. If the preceding two corrective action items (Nos. 1 and 2) fail to yield reproducible <br />results, the data will be invalidated. <br />In the event that a sample was lost or destroyed, Item 2 of the corrective action sequence <br />would be initiated. <br />This corrective action sequence will be followed for all water quality parameters. <br />Detection of elevated BTEX or oil and grease concentrations in the process stream (Section 5.1) <br />• that exceed the baseline concentrations (established during the 5-quarter baseline monitoring <br />period) by 1000 mg/I (0.1 %) would signal the potential for destructive distillation of oil shale. If <br />data excursions of this magnitude or greater are detected, the cavity temperature will be reduced to <br />300°F until i[ is evident that distillation of oil shale is no longer occurring. <br />5.9.2 Change i~r HyArostntic Pressrrre a! 1lre Disso/rrtiort Strrjnce <br />The hydrostatic pressure at the Dissolution Surface will be reviewed as data are acquired. <br />Once the ambient data have been assembled, numeric protection levels and `practice-based' permit <br />conditions will be established by the BLM and American Soda. Significant deviations from the <br />established baseline, that cannot be attributed to ambient or external conditions, will be cause to <br />initiate corrective action procedures. The following sequence of corrective action procedures will <br />be initiated. <br />1. Notify the BLM and the EPA, within the next BLM working day, that the <br />corrective action sequence of procedures for change in hydrostatic pressure at the <br />Dissolution Surface has been implemented. <br />2. Evaluate the integrity of the pressure transducer. <br />• 3. Evaluate other Dissolution Surface hydrostatic monitoring systems. <br />4. Evaluate the mass balance of the production wells in the area. <br />Agapi[o Associates, Inc. <br />