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AASSMATES INC 1760 Gmphfcs Nn, Modesto,Cdllarfaa,95351 LOG OF BORING S B 3 6DATE ROJI=CT RIPON UNIFIEDSCHOOL DISTRICT LOCATION -3Q4 NORTH ACACIA AVENUE. RIPON. CALIFORNIA PROJECT NO 13099 0001 DRILLED 04/23/98 LOGGED BY TOM LUTTERMAN REVIEWED BY JEANNE HOMSEY C4741G BILLING COMPANY JISCH ENVIRONMENTAL DRILLER RICK BERTOLING METHOD DIRECT PUSH ORE HOLE DIAMETER 1 5 IN DEPTH DRILLED 21 FT DEPTH TO WATER INITIAL 20 5 : STATIC _ FT ' CASING TYPE NA DIAMETER IN SCHEDULE INTERVAL _FT TO FT SCREEN TYPE NA DIAMETER IN SLOT SIZE IN INTERVAL TO Ft FILTER PACK TYPE NA INTERVAL FT TO FT SURFACE SEAL TYPE CEMENT SLURRY OVER 15% BENTONITE INTERVAL FT TO _ FT COMMENTS PAGE 1 OF__L_ WELL DEPTH PID SAMPLE ID LITHOLOGIC DESCRIPTION DETAIL FT PPM BLOWCOUNT LOG ' 2 ' SP 0-5 5' POORLY GRADED SAND (SP) >90% FINE POORLY GRADED SAND 4 <10% FINES, MODERATE YELLOW BROWN, NO PRODUCT ODOR, DRY, NO ORGANICS, WEAK CEMENTATION, HOMOGENOUS 1 ' 6 SW 5 5-6/9' WELL GRADED SAND (SW) >90% FINE-COARSE, WELL GRADED SAND, <10% FINES, PALE YELLOW BROWN, NO PRODUCT ODOR, NO ORGANICS DRY-MOIST WEAK CEMENTATION HOMOGENOUS 8 1 _10- SP 6/9-11/14 POORLY GRADED SAND (SP) >90% FINE-MEDIUM, POORLY GRADED \F SAND, <10% FINES MODERATE YELLOW BROWN, NO PRODUCT ODOR ' 12 NO ORGANICS DRY, WEAK CEMENTATION HOMOGENOUS 14 1 sw 16 11/14-21 WELL GRADED SAND (SW) >90% FINE-COARSE, WELL GRADED SAND, <10% FINES, PALE YELLOW BROWN, NO PRODUCT ODOR, NO 18 ORGANICS, DRY-WET, WEAK CEMENTATION, HOMOGENOUS SB3-W ' 20 1 SB3-20 22 ' 24-- 26- 211- 30- 32 426283032 ' 34- 36 38 ' L40-