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JUn 20 03 11 : 34a ELL WATER SYS. 92*2-8IL49 p. 2 <br /> 1818 Loveridge Rd. <br /> Pittsburg, Ca 94565 <br /> • 800.498.4282 <br /> 925.432.8149 Fax <br /> Martell WaTuer Systems, Inc. <br /> June 20, 2003 <br /> 1*1 <br /> Mr. John Corey <br /> Dept. of Public Works <br /> Solid Waste Division <br /> County of San Joaquin <br /> 1810 E. Hazelton Ave. <br /> Stockton, Ca 95201 <br /> Re: Grouting of Boreholes & Monitoring Wells. <br /> Dear john, <br /> On Wednesday the 18th MWS lost a load of grout that was to be used to grout <br /> TB-2. The neat cement mixture simply got to hot and started to set up before <br /> the load could be pumped down the borehole. <br /> With that in mind, I talked with Robert McClellon of the SJEHD and yourself <br /> regarding a mix change on the seal and grouting material. <br /> I requested from Robert a change from neat cement to a 11 sack sand/cement <br /> sl,yrry with retarder. After Robert conferred with his staff he gave me a verbal <br /> approval. <br /> This letter is to document that change. I have also enclosed a copy of the new <br /> mix specification. <br /> Sincerely, <br /> Thomas Hicks <br /> Martell Water Systems, Inc. <br /> Cc: Robert McClellon <br /> . . . . . . . . . . . . . . . . . . . . . . . . . . . . <br /> Ground Water <br /> When the well is ch y,we Imow the woi-th qfwater."Ben Franklin <br />