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E11f�yt® <br /> 1 <br /> Mr James Barton <br /> 1 July 30, 2004 <br /> Page 3 <br />' Sampling Schedule <br /> An Updated Site Conceptual Model, Monitoring and Remediation Status Report for Third <br /> Quarter 2004 will be submitted to the appropriate parties during October 2004 Well MW-9R <br /> will be added to the quarterly monitoring program <br /> Well Destruction <br /> 1 Groundwater monitoring well MW-9 will be destroyed by removing its well box, followed by over- <br /> drilling the casing and annulus to a total depth of 71 feet below ground surface (bgs) using 8- <br /> inch hollow stem augers Prior to well destruction, the well's total depth will be measured and <br />' any obstruction if present will be removed Upon completion, the over-drilled monitoring well <br /> borehole will be backfilled to within 5 feet of surface grade with neat cement grout emplaced <br /> from the bottom up via a tremie pipe The upper 4 5 feet of the boring will be backfilled with <br />' bentonite chips the remaining 0 5 feet will be backfilled with quick-set concrete dyed black to <br /> match the surrounding area Well construction details are summarized in Table 1 Field <br /> methods and procedures to be used by ENSR during drilling and destruction of MW-9 are <br />' summarized in Attachment A <br /> Soil Stockpile <br /> It is anticipated that drilling activities will generated approximately 15 cubic yards of soil <br /> cuttings The cuttings will be placed in 55-gallon DOT-rated drums and temporarily stored <br /> onsite It is anticipated that the drums containing soil drill cuttings and drums containing rinse <br />' water will be transported as non hazardous waste to an approved facility within 90-days <br /> 1 <br /> 1 <br /> e <br /> J Troiectsk0694015098 293117inaRReportsZ098 Well install MW 9R Work Plan doc <br /> ' 11, 3, Yeers of=X(eiieocp!t, Envvonment6'Service' <br />