Laserfiche WebLink
Table 1. Water-Level Elevations <br /> ARCO Station 2093,Tracy, California (cont'd) <br /> Top-of-Casing Depth to Groundwater Change since <br /> Well No and Elevation Water Elevation Last Measurement <br /> date feet a feet feet feet <br /> 7/12/91 1021 3786 <br /> -021 <br /> 9124/91 1032 3775 -011 <br /> 1123/92 10.00 3807 0.32 <br /> ATR-11 <br /> 8/25/91 4684 <br /> 9/24/'91 950 3734 - <br /> 1/23/92 8.95 3789 OS5 <br /> ATR-12 <br /> 10/16/90 4708 - - - <br /> 10/19/90 933 3775 - <br /> 1/10/91 916 3792 017 <br /> 4110/91 898 3810 018 <br /> 7/12/'91 928 3780 -030 <br /> 9/24191 952 3756 -024 <br /> 1/23/92 906 38.02 0.46 <br /> i (a)All elevations have been corrected to an arbitrary datum based on a <br /> temporary on-site benchmark with an assigned elevation of 50 feet <br /> (b)Depth to water for these dates reported incorrectly in quarterly reports <br /> for October 1990 through July 1991 <br /> NOTE The water level elevations in this report can not be compared with any reports prior to <br /> March 1991 due to the correction to the arbitrary datum However,these corrections should not <br /> change any previous contour maps <br />• <br />