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i 1LOG OF EXPLORATORY BORING PROJECT NUMBER 939-02.06 BORING NO. G-3 1 PROJECT NAME San Joaquin County Landfill Development Site PAGE 1 OF 11 BY BAB DATE 6/15-19/87 SURFACE ELEV. 110.30 i i 0 0 u r] 11 n [I u 0 Ir SANDY CLAY to SANDY SILT, brown (10YR, 5/3); 20% fine- to coarse-grained sand; low plasticity; common fine, grass roots; dry. @1.5': yellowish red (5YR, 5/6); slight increase in sand; abundant fine rootholes; hard; dry. CLAY, yellowish red (5YR, 4/6); 10% medium -grained sand; very dense and stiff; damp. SILTY SAND and CLAY, Interbedded (4:1); Clay: yellowish red (5YR, 4/6); slight plasticity; damp to moist. Sand: very pale brown (10YR, 7/4); 15-40% fines; fine to medium grained; micaceous; occasional iron oxidation stains. SANDY CLAY to SANDY SILT, yellowish brown (10YR, 5/4) to dark brown (7.5YR, 4/4) and yellowish red (5YR, 4/6); 20% fine- to medium -grained sand; moderately silty. REMARKS Drilled with air rotary methods to a depth of 170 feet, employing water injection from 28-50 feet and 110-170 feet. Mud rotary drilling was used to advance the hole from 170 to a total depth of 215 feet. 1 ® denotes bag sample. PLATE A_�a POCKET PENETRA- LITHO- TORVANE PENETRO- TION z z GRAPHIC DESCRIPTION METER 5 (TS F) (TS F) (Blows/ Ft.) 0 < W v 3 J a ® COLUMN h 10 Ir SANDY CLAY to SANDY SILT, brown (10YR, 5/3); 20% fine- to coarse-grained sand; low plasticity; common fine, grass roots; dry. @1.5': yellowish red (5YR, 5/6); slight increase in sand; abundant fine rootholes; hard; dry. CLAY, yellowish red (5YR, 4/6); 10% medium -grained sand; very dense and stiff; damp. SILTY SAND and CLAY, Interbedded (4:1); Clay: yellowish red (5YR, 4/6); slight plasticity; damp to moist. Sand: very pale brown (10YR, 7/4); 15-40% fines; fine to medium grained; micaceous; occasional iron oxidation stains. SANDY CLAY to SANDY SILT, yellowish brown (10YR, 5/4) to dark brown (7.5YR, 4/4) and yellowish red (5YR, 4/6); 20% fine- to medium -grained sand; moderately silty. REMARKS Drilled with air rotary methods to a depth of 170 feet, employing water injection from 28-50 feet and 110-170 feet. Mud rotary drilling was used to advance the hole from 170 to a total depth of 215 feet. 1 ® denotes bag sample. PLATE A_�a ML CL - CN 5 CL/ SM 10 15 00/ oo/ 00/ CL Ir SANDY CLAY to SANDY SILT, brown (10YR, 5/3); 20% fine- to coarse-grained sand; low plasticity; common fine, grass roots; dry. @1.5': yellowish red (5YR, 5/6); slight increase in sand; abundant fine rootholes; hard; dry. CLAY, yellowish red (5YR, 4/6); 10% medium -grained sand; very dense and stiff; damp. SILTY SAND and CLAY, Interbedded (4:1); Clay: yellowish red (5YR, 4/6); slight plasticity; damp to moist. Sand: very pale brown (10YR, 7/4); 15-40% fines; fine to medium grained; micaceous; occasional iron oxidation stains. SANDY CLAY to SANDY SILT, yellowish brown (10YR, 5/4) to dark brown (7.5YR, 4/4) and yellowish red (5YR, 4/6); 20% fine- to medium -grained sand; moderately silty. REMARKS Drilled with air rotary methods to a depth of 170 feet, employing water injection from 28-50 feet and 110-170 feet. Mud rotary drilling was used to advance the hole from 170 to a total depth of 215 feet. 1 ® denotes bag sample. PLATE A_�a