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ularte <br />& ASSOCIATES, INC. <br />Geotechnical Consultants <br />October 18, 2021 <br />File No, 4961 <br />San Joaquin County ā€” Environmental Health Department <br />Retaining Wall 1868 East Hazelton Avenue <br />Design Stockton, CA 95205 <br />PROJECT: MANTECA STORAGE <br />Re: Work Description <br />Dear San Joaquin County <br />1049 Nichols Drive Rocklin CA 95765_ <br />Phone: 916.626.5577 <br />FAX: 916.626.5533 <br />Shoring We are writing this letter as a work description to obtain a soil boring permit for <br />Design the Manteca Storage Project. The project proposes a storage facility with <br />associated pavement. The focus of our geotechnical exploration will be at the <br />following address 2430 West Atherton Drive in Manteca (APN: 241-320-57) <br />Drilling: <br />Gularte and Associates are contracted to perform three exploratory borings for <br />Geotech the purposes of writing a Geotechnical Report for the project. The borings will be <br />Reports 4" in diameter and will be drilled with solid flight augers. These borings will be <br />used to retrieve SPT and CAL -MOD soil samples. Two of the borings will be <br />drilled to a depth of 20 feet below ground surface and one of the borings will be <br />drilled to a depth of 50 feet below ground surface. The borings locations can be <br />seen on the attached site map. <br />Grouting: <br />Phase I ESA Once the desired depths of the borings are met the holes will be grouted. A tremie <br />pipe will be placed to the bottom of the borehole to avoid segregation or dilution <br />of grout. The grout will be pumped/poured through the tremie pipe releasing the <br />grout at the bottom of the bore hole. The tremie pipe will be submerged in the <br />slurry at all times during slurry placement. The tremie pipe will be raised slowly <br />as grout is introduced to the casing or hole. The placing of grout will be continuous <br />Soil until grout appears at the top of the bore hole, at which time the tremie pipe will <br />Compaction be removed. <br />Respectfully, <br />Guularte & Associates, Inc. <br />Special `Jāœ“/ <br />Inspections <br />Brayden Hungrige <br />Staff Engineer <br />