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Appendix B- Historical Water Levels City of Lathrop <br /> Consolidated Treatment Facility <br /> Monitoring and Reporting Program R5-2016-0028-03 Rev 3 <br /> City of Lathrop- MWM-10 <br /> Groundwater Elevation <br /> � <br /> 20 Well abandoned <br /> 00 <br /> 0 <br /> o z 15 <br /> > 10 <br /> W <br /> d � <br /> 5 <br /> a c <br /> 3 � <br /> a, <br /> 3 E 0 <br /> o e <br /> c7 � <br /> ++ <br /> -5 <br /> a� uO �.O r� oo rn o -1 N m � u'1 r� 00 rn o m � Ln � r*1 00 rn o N m � Ln <br /> d M 0) 01 0) M 0 0 0 0 0 0 0 0 0 0 r-I rH r-I rH r I N N N N N N <br /> co co co co co co co ro ca ra ra co ca ca co co co co co co co co co co co ro ca co ro ra co <br /> Date <br /> MWM-10 MWM-10 <br /> Measuring Point NGVD 29 NAVD 88 Measuring Point NGVD 29 NAVD 88 <br /> MP 15.22 17.61 MP 15.22 17.61 <br /> Groundwater Groundwater Groundwater Groundwater <br /> Date Sampled DTW(ft) Elevation Elevation Date Sampled DTW(ft) Elevation Elevation <br /> ft, NGVD 29 ft,NAVD 88 ft, NGVD 29 ft,NAVD 88 <br /> 11/7/2001 13.59 1.63 4.02 4/1/2004 18.18 -2.96 -0.57 <br /> 1/16/2002 12.61 2.61 5.00 5/27/2004 19.11 -3.89 -1.50 <br /> 1/31/2002 13.16 2.06 4.45 6/30/2004 17.86 -2.64 -0.25 <br /> 2/28/2002 13.10 2.12 4.51 7/30/2004 17.77 -2.55 -0.16 <br /> 3/22/2002 10.17 5.05 7.44 8/20/2004 17.59 -2.37 0.02 <br /> 4/16/2002 12.57 2.65 5.04 9/27/2004 16.95 -1.73 0.66 <br /> 4/25/2002 12.27 2.95 5.34 10/22/2004 15.21 0.01 2.40 <br /> 5/24/2002 11.19 4.03 6.42 11/11/2004 14.58 0.64 3.03 <br /> 6/28/2002 11.88 3.34 5.73 5/23/2005 11.46 3.76 6.15 <br /> 7/25/2002 12.57 2.65 5.04 6/28/2005 12 3.22 5.61 <br /> 8/27/2002 13.56 1.66 4.05 10/12/2005 13.41 1.81 4.20 <br /> 10/7/2002 13.38 1.84 4.23 1/31/2006 11.21 4.01 6.40 <br /> 10/29/2002 12.95 2.27 4.66 4/25/2006 6.65 8.57 10.96 <br /> 12/10/2002 13.61 1.61 4.00 7/19/2006 12.12 3.10 5.49 <br /> 1/15/2003 12.99 2.23 4.62 10/13/2006 12.55 2.67 5.06 <br /> 2/13/2003 13.19 2.03 4.42 <br /> 3/18/2003 13.46 1.76 4.15 <br /> 5/7/2003 11.89 3.33 5.72 <br /> 6/4/2003 12.51 2.71 5.10 <br /> 7/28/2003 13.25 1.97 4.36 <br /> 9/8/2003 13.65 1.57 3.96 <br /> 12/16/2003 13.56 1.66 4.05 <br /> 1/12/2004 13.09 2.13 4.52 <br /> 2/2/2004 13.59 1.63 4.02 <br /> 3/2/2004 12.45 2.77 5.16 <br /> 3/29/2004 18.18 -2.96 -0.57 <br /> 3/30/2004 18.24 -3.02 -0.63 <br /> Abbreviations: <br /> DTW=depth to water <br /> ft=feet <br /> MP=measuring point <br /> NAVD 88= North American Vertical Datum of 1988 <br /> NGVD 29=National Geodetic Vertical Datum of 1929 <br /> Notes: <br /> (a) MP elevation surveyed by MacKay&Somps,July 2005. <br /> (b)Surveyed elevations referenced to NGVD 29 and converted to NAVD 88 by adding 2.39 ft. Datum conversion factor determined <br /> from National Geodetic Survey Vertcon website and is an average for the area. (www.ngs.noaa.gov/TOOLS/Vertcon/vertcon.html) <br /> (c)Well was abandoned in December 2006. <br /> EKI Environment &Water, Inc. <br /> July 2023 Page 33 of 145 EKI B90088.03 <br />