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~~~y,.~ IZI lv~~ Page 2 Memo to McArdle Colony In order to assure prompt pursuit of the tasks outlined above, by EXXON, I believe it advisable, if the Board approves the amendment, for the Board to impose the following stipulated conditions upon that approval: r~ Completion of an acceptable state-of-the-art mathematical slope stability analysis of the "excess fill" mass, by EXXON, no later than February 15, 1983. /(2) Projection of possible slope failure and channel disruption scenarios, including projection of probable health & safety hazards and environmental impacts related thereto, by EXXON, no later than March 31, 1983. /(3) Preparation of an appropriate contingency plan to mitigate the projected probable health & safety hazards and environmental impacts determined during completion of (2) above, by EXXON, no later than April 30, 1983. /(4) Completion of an appropriate interim regrading plan for the maintenance of the "excess fill" mass in its most stable condition, as determined through completion of the slope stabilty analysis of (1) above, by EXXON, no later than May 31, 1983. /(5) Completion of any required interim regrading, in accordance with the interim regrading plan developed in (4) above, by EXXON, no later than December 31, 1983. ~6) Completion of a final regrading plan for the "excess fill" mass and any additional effected areas and facilities, including final surface drainage channelization plans for the effected reaches and confluence of the Davis Gulch and Middle Fork channels, by EXXON, no later than April 30, 1984. /(7) Completion of the final regrading and construction of surface drainage facilities designed during the completion of (6) above, by EXXON, no later than December 31, 1984. Area 19d: "Plant Access Road, Sta. 280 to 355" In its December 13th supplemental submittal, EXXON stated its commitment "to controlling erosion and sedimentation problems while continuing to maintain the road drainage system." EXXON did not, however, specifically respond to my concern regarding the incomplete segment of roadway which exists in the vicinity of the boundary of Areas 9 and 19d.