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<br />Zalkind, Zimpfer, Shelton -3- July 29, 1982 <br />Rrea XIX - Major Access Road Areas from Old Retort to Plant Site <br />Reseeding of all final configuration cut and fill slopes to occur fall, 1982. <br />Temporary drainage facilities to conduct water from seeps adjoining <br />Davis Gulch falls to the Middle Fork now under construction. <br />Davis Gulch lower fill now being scrutinized by the company concerning <br />potential regrading and drain problems. Corrective work preliminarily <br />anticipated to occur in 1983. <br />Approximately 2 million yards of regrading anticipated. <br />Surface drainage flume on mine bench face to be redesigned in conjunction <br />with the Davis Gulch fill redesign. <br />Concerns Voiced by Staff Members in Response to Exxon Request <br />(1) Hydrologic testing, including baseline aquifer information, should be <br />completed. <br />(2) Exxon indicated that the data necessary to complete the spent shale pile <br />designs, as stipulated in permit approval, have been collected. Further, the <br />analysis by D'Appolonia has been essentially completed and should be available <br />within the next several months. <br />(3) Remaining major concern regarding modification of surface hydrology/sediment <br />generation and control problems throughout the site, due to the disturbed area <br />of the site. Staff anticipates completion of thorough hydrologic and sediment <br />control analysis for the site, in order to determine whether the existing <br />sediment control plans will be adequate during cessation. <br />(4) No major conceptual problems immediately apparent. Concerns of staff <br />deal with engineering and hydrologic details which will need major detailing <br />prior to approval to cessation amendments. <br />/mt <br />