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IlaRCITA,L.CR ATm COMPAN <br />-^elJECT NUMBER 197-36 <br />JECT NAME P1N-Replacement Program <br />LOCATION Lathrop Groundwater Remedial Project, Lathrop, CA <br />GRILUNG METHOD Mud Rotary <br />SAMPLING METHOD <br />GROUND ELEVATION 12.99 feet <br />TOP OF CASING 14.26 feet <br />LOGGED BY R. Siegfried <br />REMARKS Weather: Sunny, 65 E. no wind <br />WELL CONSTRUCTION LOG <br />WELL NUMBER PW8-155 <br />DATE DRILLED February 21, 1997 <br />CASING TYPE/DIAMETER 10 Gage Mild Carbon Steel/6.625-in <br />SCREEN TYPFJSLOT Continuous Slot Stainless Stee1/0.065-in <br />GRAVEL PACK TYPE Silica Sand (SRI #61 <br />GROUT TYPE/QUANTITY 9 Sack Cement/Sand Slurry <br />DEPTH TO WATER 13.30 feet <br />GROUND WATER ELEVATION -0.31 feet <br />- <br />a I .9.- <br />0 BLOW COUNTS RECOVERY (%/ft.) SAMPLE ID. EXTENT I - <br />(.4 GRAPHIC LOG -4 0 r- 0 Cl, DEPTH (ft. BGS) 5 — LL.14-; <br />Lu <br />WELL DIAGRAM <br />• <br />• <br />x x <br />SP-SM - SAND with silt, fine grained. light brown <br />x - <br />— <br />- <br />5 - <br />--5 - -.- <br />— <br />— <br />— <br />0 <br />— -5 <br />— -10 <br />— -15 <br />= -,,, <br />" <br />—.30 <br />- —4, <br />4 <br />4 -- 0 <br />% <br />AO r A <br />4 <br />4 <br />4 <br />4 <br />) 4 <br />A <br />1 <br />44 <br />/A <br />'A <br />/ <br />, <br />4 <br />4 <br />/ <br />4 <br /> <br />4 13-in dia. <br />Borenole o <br />4 <br />A Casing <br /> <br />-n Centralizer <br />4 <br />/ 9 Sack , Cement/Sand <br /> <br />A Slurry 1 <br />4 4 <br /> <br />/ 6.625-in Mbld <br /> <br />d Carbon Steel <br />10 Gage <br />, <br />4. <br />I <br /> <br />4 Casing <br />Centralizer <br />4 <br />SP SAND- medium grained, gray <br />- — xl <br />t _ <br />ML - CLAYEY SILT- brown 10-- — <br />— <br />- --._ <br />_ -- •-.1 <br />— - <br />— •: <br />SP/CL - SAND - medium grained, gray, with clayey <br />laminations <br />- 15 — <br />- - -,- <br />-20-- - — _ <br />- <br />.7-- — x- - — <br />— x-, <br />_- x- _ _ <br />I= <br />.1r----- <br />-7---- <br />ML- CLAYEY SILT - with occasional thin sandy layers, ' <br />gray <br />—35— <br />_ <br />—25— <br />- — <br />- _ _ <br />- -I- <br />- <br />- <br />- -4- <br />: <br />—4.0-- - -4.- _ _ <br />- - _ <br />SP SAND- medium grained, brown —45 -— <br />—50— <br />- — _ <br />- -— <br />—55— <br />- <br />-60— <br />___ -- _ <br />_ <br />_ <br />- - _ <br />—65— _ <br />- .— <br />- <br />—70__ <br />- <br />— <br />- _ <br />—75— - — <br />- <br />— -40 <br />-45 <br />— -50 <br />— -55 <br />_ <br />— - 6 0 <br />_ <br />— -65 <br />SP <br />SM <br />SP-SM - SAND - fine grained with silt • <br />SP • SAND- medium grained with some coarse sand layers__