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<br />Piu ~aa[1 ~~rn rti <br />fig,. nor <br />TO: <br />DEPARTMENT OF NATURAL RESOURCES III III III IIIIIII'll <br />v r.mnic P;cro• e.r~.~,~,.~ u~,,.~w~ <br />MINED LAND RECLAMATION DIVISION <br />DAVID C SHEITON Direcror <br />/f:.~ <br />Jim McACdle ~ ~~,~ <br />FROM: Jerry Zimpfer <br />DATE: December 14, 1982 <br />RE: Exxon's December 13, 1982 Submittal <br />I have reviewed Exxon's response to the issues identified in my <br />November 29, 1982 memo to you. The November 29th memo <br />indicated that three hydrologic issues remained to be resolved, <br />the possible redesign of the Middle Folk dam, control of runoff <br />and erosion along the road system, and hydrolooic monlto[inq. <br />The operator has satisfactorily [esponsed to the first two <br />items. The submittal indicates that the revised designs for <br />the Middle Fork dam would be submitted to the Division <br />following app[oval by the State Engineer's Office, and that <br />standard drainage control techniques (culvecting and ditching, <br />etc.) would be used to control road drainage. In addition, the <br />operator has committed to cont[ollinq erosion and sedimentation <br />along the system of toads. <br />In responding to the third concern, hydrologic <br />Exxon indicated that they intend to submit a t. <br />plan. However, the operator has not indicated <br />plan would include any of the details outlined <br />29th memo (page 3). Although the revised plan <br />at a later time, it is appropriate that we now <br />scope of that plan. <br />monitoring, <br />avised monitoring <br />that the revised <br />in my November <br />can be submitted <br />agree on the <br />The revised monitoring plan should monitor the quality and <br />quantity of surface and ground water (bedrock and alluvial), <br />above and below the affected area. Sediment pond outflows <br />should be monitored for EPA-DOH effluent limitations, and <br />either total dissolved solids or electrical conductivity. <br />Surface water stations and alluvial wells should be monitored <br />for floe or water level, total dissolved solid e~ or electrical <br />conductivity, pH, temperature, total suspended solids (surface <br />water), total iron, total manganese, and any water quality <br />constituent that could increase through the use of dust <br />supp[eseants. The plan should also discuss monitoring <br />frequency, locate the proposed monitoring stations on a map, <br />and provide for the periodic submission of monitoring results <br />and analysis to the Division for review. <br />423 Conl~nnGil l3udrlin~f I'1I•( .`;hcrni~in ;;lri~••1 hom'ur (:nlur,ul~• Ng20'1 (ul (9(1"11 H66-3567 <br />