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f May 4, 1992 File: 24-215600-E03 Mr. David Sadwick Heller, Ehrman, White McAuliffe 601 South Figueroa Street, 40th Floor Los Angeles, California 90017-5758 SUBJECT: Cove Contractors Landfill Site Dear Mr. Sadwick: We received a fax from you on March 26, 1992 which consisted of a copy of a landfill inspection report prepared by Mr. Steven Sasson of the San Joaquin County Environmental Health Division, the local enforcement agency for the California Integrated Waste Management Board. At your request, we have prepared this letter which is a response to the comments in the inspection report Comment 1: 17678- The wall of the excavation is at a 90° angle. The slope of the working face shall not exceed a 301 angle. Response: Section 17678 of Title 14, California Code of Regulations, states: "The slope of the working face shall be maintained at the ratio which will allow effective compaction of the wastes. The depth of cuts and slopes of trench sides shall not exceed horizontal to vertical ratios as approved by the Enforcement Agency. " When filling operations resume at the landfill, the slope of the active face will be kept at a slope of less than 30 degrees. The pre-existing cut slope on the northern edge of the site is native material, will not be used as a "working face", and thus does not violate 14 CCR § 17678. Sections A-4 and G-1 of the Kleinfeider "Report of Disposal Site Information, Cove Contractors Site" dated July 11, 1990 describes how construction and fill operations in the vicinity of the soil wall will be limited and conform to Section 1926.650, Subpart P, Part 1926, 29 Code of Federal Regulations. These operations will also comply with 14 CCR § 17678. Comment 2: 17710- The disposal area shall have an engineered grading plan to prevent ponding of rainwater on top of buried ASW. CM8-92-66 Page I of 3 Co i t 199 Ktei #elder Inc. KLEINF�� 307 Fite �ircle, Sacramento, CA 95827 (916) 366-1701