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Monitoring Well <br />Construction <br />PW8-76A <br />TreaTek —CRA <br />Occidental Chemical Co_ <br />JR_ Simplot Co_ Facility <br />16777 Howland Road <br />Lathrop, California <br />23 February 1994 <br />59.3. <br />61 8' <br />62 7' _.- <br />67.6' <br />72.6' <br />75.6 ' <br />BO' <br />2.5' <br />o g•I <br />5 <br />3 <br />Locking steel cap <br />DEPTH <br />1.5' <br />Ground surface <br />0' <br />0.5'A <br />3.5, 12 gauge, 12 3/4" dia. <br />steel outer casing <br />9-sack sand-cement <br />slurry grout <br />12 gauge, 6 5/8" dia. <br />steel casing, welded <br />connections at 20' <br />intervals <br />Bentonite pellet seal <br />Coarse Monterey sand <br />.e.e ..%. <br />0.060" slot low carbon <br />steel wire Johnson well <br />..:•.., <br />..7.** screen <br /> <br />,......, ,,,,.. <br />....,..0 2 1 Grq.vel pack <br /> <br />.e.r e.r <br />*::::.]-4111 <br /> <br />..•..,•. ..%. 12 gauge, 6 5/8" dia. <br /> <br />...... e:e:, ,...... r <br /> <br />.. .,:* steel casing, welded <br />...., .V.':. plate at base , „ <br />-..•--Sloughed formation <br />—4- 12" -01-1