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Still interbedded, but very thin sandstone layers; majority <br />SILTSTONE/CLAYSTONE layers. <br />CLAYEY SAND-SILTY SAND; yellowish brown (10YR 5/4). <br />POORLY GRADED SAND-SILTY SAND; gravel; dark grains. <br />Interbedded gravel layers and silty/clayey sand layers. <br />SAME AS ABOVE. <br />CLAYEY SAND-SILTY SAND; yellowish brown (10YR 5/4); trace <br />sandstone fragments; trace fine gravel (dark grains). <br />SAME AS ABOVE. <br />Very thin, hard layer reported by driller; few inches thick. <br />SAME AS ABOVE. <br />POORLY GRADED SAND-SILTY SAND; yellowish brown (10YR <br />SM <br />ML <br />SC-SM <br />SP-SM <br />SC-SM <br />SP-SMDepth(ft.)(Color, Texture, Structure)WellCompletionGeologic Descriptions are Based on the USCS. <br />Description <br />USCS Class.RecoveryBlow CountPID(ppm)GraphicLogSample ID% Recovery146 <br />148 <br />150 <br />152 <br />154 <br />156 <br />158 <br />160 <br />162 <br />164 <br />166 <br />168 <br />170 <br />172 <br />174 <br />176 <br />178 <br />180 <br />182 <br />149270 <br />Drilling Log <br />North County Recycling Center & Sanitary LandfillOwner <br />Continued Next Page <br />Proj. No.San Joaquin County, California <br />Project <br />Page: 5 of 7 <br />Monitoring Well <br />San Joaquin County <br />G-8 <br />Location <br />CBI DRILLING LOG Rev: 1/21/15 NORTH_COUNTY_LANDFILL.GPJ CBI.GDT 1/13/17