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Virgil Chavez Land Surveying 312 Georgia Street, Suite 225 Vallejo Calefornia 94590-5907 (707) 553-2476 • Fax(707) 553-8698 November 24, 2000 Project No 1104-15D David Herzog Gettler-Ryan, Inc 3146 Gold Camp Dr , Suite 240 Rancho Cordova, Ca. 95670 Subject . Monitoring Well Survey 437 E . Miner Avenue Stockton, Ca. Dear David: This is to confirm that we have proceeded at your request to resurvey the monitoring wells at the above referenced site . The survey was completed on November 16, 2000 . The benchmark for the survey was a City of Stockton benchmark, being a 3 1/211 Brass Disk stamped "I S-911 , located in a monument well in the intersection San Joaquin Ave . and Oak Street . The stationing data is for top of casing, using the back of sidewalk on the north side of E. Miner Road, beginning at the intersection of the back of sidewalk of the west side of California Street as the reference line. Benchmark Elev. = 10 .523 feet, MSL. Rim TOC Well No. _EJ-e-vation Elevation Station Offset U-1 12 . 09 11 . 65 ' 0+42 . 27 64 . 42 (Rt) U-2 11 . 95 ' 11 . 66 " 0+62 . 23 14 . 86 (Rt) U-3 11 . 78 , 11 .41 ' 0+05 . 18 28 . 85 (Rt) U-4 12 . 29 ' 11 . 72 ' 0+21. 16 91 . 87 (Rt) U-5 13 . 15 ' 12 . 58 ' 0+91 . 09 90 . 62 (Rt) U-6 12 . 09 ' 11 .53 ' 1+30 . 74 27 . 29 (Rt) U-7 11 . 93 ' 11 . 75 ' 0+39 . 94 -104 . 89 (Lt) U-8 12 .32 ' 11 64 ' 0-74 . 80 24 . 36 (Rt) U-9 12 .21 ' 11 . 92 ' 0-70 .53 125 .42 (Rt) U-10 12 . 14 ' 1.1 . 64 ' 0-70 . 01 68 . 09 (Rt) U-11 12 . 95 ' 12 . 55 ' - (2+38 . 17) 112 . 63 (Rt) U-12 12 . 92 ' 12 .41 ' - (2+32 . 70) 113 . 35 (Rt) U-13 12 84 ' 12 . 28 ' - (2+27 . 66) 114 . 34 (Rt) U-14 12 .63 ' 12 . 33 ' 1+35 .22 51 . 78 (Rt) U-15 12 36 ' 12 . 12 ' 1+36 . 91 44 . 78 (Rt) U-16 12 05 ' 11 . 70 ' - (1+39 82) -90 .48 (Lt) U-17 12 02 ' 11 . 62 ' - (1+44 54) --90 . 87 (Lt)