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3. The excavated area can be refilled with large dlameterrip-rap covered with <br />coarse gravel (2-Inch crushed rock). The rip-rap and gravel should extend <br />above the elevation of the seepage at least 3 feet and be provided wtth en <br />outlet to the pond. <br />4. FIII above the rip-rap can consist of natNe sand or clay soils, crushed rock, <br />or bedrock which has been broken down to Boll sized material. Materials <br />from the existing slide mass should be suitable for ra-uee provided they <br />are comparatively dry. We do not recommend Incorporating eignlficant <br />quantities of claystone or claystone derived soils into the fill. The fill <br />should be placed in thin I'dte of 8 to 12 Inches and compacted with several <br />passes of heavy equipment. Final grading should provide good drainage <br />of surface water out of the area and Into the pond. The slope above the <br />slide should be flattened ae much as practical and rs-vegetated. <br />Stockpiling of topsoil, or other surcharges should not be placed In this <br />area In the future. <br />Our observations and recommendations were prepared using methods and <br />praceduros consistent wfth other professionals practicing geotechnlcal englneering In this <br />area at this time. No other warranty, express or implied, is made. We hope this provides <br />the Information you require. K you have questions, please call. <br />Very truly yours, <br />CTLITHOMPSCN, INC. <br />Mark Q. Qray, P.E. <br />ProJact Manager <br />Reviewed by: <br />Ronald M. McOmber, P.E. <br />Principal <br />MGG:RMM:mgg/sdc <br />(5 copies sent) <br />EL#:BSt+t'1rLEE0E ~NOSdWOHl/~10 : WdEO:E Sfi-9 -L 7 NOSdWOHl/110: A9 1N3S <br />