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TABLE 1.1 Well and Piezometer Construction Details Ten-year Evaluation and 2011 Annual Groundwater Monitoring Report,Koppel Stockton Terminal, Stockton, California Coordinates Top of Ground Surface Screen Bentonite Filter Pack Total Well or Piezometer Groundwater Casing Elevation Interval Interval Interval Depth Number Zone Latitude' Longitude' (feet msl (feet msl)' (feet bgs) (feet bgs) (feet bgs) (feet bgs) KP-1 R Shallow N 37.5626 W 121.1907 6.50 4.80 6 to 26 2 to 4 4 to 28 28 KP-2 Shallow N 37.9433 W 121.3189 7.94 -d 9 to 19 5 to 7.5 7.5 to 24 24 KP-3 Shallow N 37.9420 W 121.3176 6.29 -° 6 to 16 3 to 4 4 to 21 25 KP-4 Shallow N 37.9404 W 121.3170 7.91 -a 10 to 20 5 to 7 7 to 25 25 KP-4D Deep N 37.9404 W 121.3169 7.76 4.99 47 to 57 42.5 to 44.5 44.5 to 58 57.5 KP-5S(Abandoned) Shallow N 37.5623 W 121.1909 4.64 4.86 9 to 19 4 to 6 6 to 22 22 KP-5D(Abandoned) Deep N 37.5623 W 121.1909 4.52 4.89 50 to 60 41 to 45 45 to 61 61 KP-6D Deep N 37.9402 W 121.3183 4.96 -° 45 to 55 38 to 41 41 to 62 62 KP-7S Shallow N 37.9426 W 121.3204 3.86 4.10 9 to 19 4 to 6 6 to 22 22 KP-7D Deep N 37.9426 W 121.3204 3.83 4.29 49 to 59 40.5 to 43.5 43.5 to 61 61 KP-8S Shallow N 37.5627 W 121.1912 5.31 5.71 10 to 20 5 to 7 7 to 22 22 KP-9S Shallow N 37.9430 W 121.3201 3.93 4.53 10 to 20 5 to 7 7 to 22 22 KP-1 OS(Abandoned) Shallow N 37.9436' W 121.3191° 3.550 3.918 6 to 21 1 to 3 3 to 22 22 KP-10S-R Shallow N 37.9436 W 121.3191 3.94 3.98 6.5 to 21.5 4 to 5.5 5.5 to 22 22 KP-11 S(Abandoned) Shallow N 37.94320 W 121.31950 5.010 4.930 8 to 23 3 to 5 5 to 24 24 KP-12S Shallow N 37.9435 W 121.3201 4.35 4.570 7 to 22 2 to 4 4 to 24 24 KP-BG-1 (Abandoned) Shallow N 37.5637 W 121.1859 5.54 5.77 6 to 21 3 to 5 5 to 22 22 TG-1 Shallow N 37.9409 W 121.3185 5.49 -' 6 to 26 2.2 to 4.2 4.2 to 28 28 TG-2 Shallow N 37.5626 W 121.1906 7.32 4.71 7 to 27 2 to 5 5 to 29 29 TG-3 Shallow N 37.9402 W 121.3182 7.4 4.93 8 to 28 4 to 6 6 to 30 30 TG-4 Shallow N 37.9419 W 121.3181 3.34 -° 6.5 to 16.5 2.6 to 5 5 to 17 17 TG-5 Shallow N 37.5625 W 121.1904 7.63 " 8 to 18 2.6 to 5 5 to 18.4 18.4 81-lorizontal coordinates are provided in latitude and longitude in accordance with MRP No. R5-2004-0835. °Top-of-casing elevations were identified during a site survey performed in July 2000(CH2M HILL,2000a)and resurveyed in October 2010,except where noted otherwise. `Ground surface elevation was not surveyed in July 2000 or October 2010,except at newly installed Wells KP-4D and KP-1 OS-R. Ground surface elevation was calculated using historical surveys,as available. °Ground surface elevation was not surveyed. OMonitoring Wells KP-1 OS and KP-11 S were surveyed on August 9,2006. Notes: Monitoring Well KP-11S was abandoned on November 15,2007,because it was damaged. Monitoring Wells KP-5S,KP-5D,KP-1 OS, and KP-BG-1 were abandoned on October 5,2010,because they were damaged or no longer required. bgs = below ground surface msl = mean sea level won 12970001(CAH5003.DOCx) iJ c Iluva