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Page 3 <br />Memo to McArdle <br />Colony <br />In my memorandum of November 30, 1982, I observed that the existing <br />incompletely graded configuration of this segment of the plant access <br />road could result in water impoundment and a subsequent erosive breakout. <br />In order to prevent the possible failure of the road drainage <br />system within this segment of the plant access road, and in order to <br />protect the access road system from related damage, I believe it <br />advisable, if the Board approves the amendment, for the Board to impose <br />the following stipulated conditions upon that approval: <br />(1) Completion of an interim or final road drainage plan to affect <br />completion of the road drainage system, by EXXON, no later than <br />April 30, 1983. <br />(2) Completion of the construction of the interim drainage plan, <br />as completed in (1) above, by EXXON, no later than December 31, <br />1983. <br />Amended Hydrologic Monitoring Plan: <br />Jerry Zimpfer, in his memorandum to you of December 14, 1982, <br />discussed the hydrogeological aspects of the EXXON "Interim Site Plan". <br />Jerry indicated that EXXON has commited to the submission of an amended <br />hydrologic monitoring plan in their supplemental submittal of December <br />13, 1982. Jerry also indicated that he believes it appropriate, in order <br />to avoid future disagreement, to specify the scope of that amended <br />hydrologic monitoring plan. (See attached memorandum, Jerry Zimpfer to <br />Jim McArdle, dated December 14, 1982) <br />I believe it is advisable, in order to provide consistency <br />throughout the documentation and to avoid future disagreement, if the <br />Board approves the amendment, for the Board to impose the following <br />stipulated condition upon that approval: <br />Completion of an acceptable amended hydrologic monitoring plan, by <br />EXXON, designed to monitor the quality and quantity of surface and <br />ground waters (bedrock and alluvial) above and below the affected <br />areas of the Colony Project. Sediment pond outflows should be <br />monitored for EPA-DOH effluent limitations, and either dissolved <br />solids or electrical conductivity. Surface water stations and <br />alluvial wells should be monitored for flow and water level, total <br />dissolved solids or electrical conductivity, pH, temperature, total <br />suspended solids (surface water), total iron, total manganese, and <br />any water quality constituent that could increase because of the <br />use of dust suppressants. The plan should also discuss monitoring <br />frequency, locate the proposed monitoring stations on a map, and <br />