Laserfiche WebLink
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- MWR-10 <br /> Groundwater Elevation <br /> 00 20 <br /> 00 <br /> o z 15 <br /> 10 <br /> W � <br /> d � <br /> 5 <br /> a c <br /> 3 � <br /> a, <br /> 3 0 <br /> C7o e <br /> -0 <br /> ++ <br /> -5 <br /> a) Ln 1.0 r-. oo rn or-i N m v Ln �.O r� oo rn 0 -1 N m � Ln 110 r� oo rn 0 -1 N m �t Ln <br /> d T T T T T O O O O O O O O O O 1-I '-I '-I 1- 1- 1- 1- <br /> ca co co co co ca ca ca ca co co co co ca ca ca ca co co co co co co co co co co co co co co <br /> Date <br /> MWR-10 MWR-10 <br /> Measuring Point NGVD 29 NAVD 88 Measuring Point NGVD 29 NAVD 88 <br /> MP 12.71 15.10 MP 12.71 15.10 <br /> Groundwater Groundwater Groundwater <br /> Groundwater Elevation <br /> Date Sampled DTW(ft) Elevation Elevation Date Sampled DTW(ft) Elevation <br /> ft, NGVD 29 ft,NAVD 88 ft, NGVD 29 (ft,NAVD 88) <br /> 1/25/1999 11.29 1.42 3.81 10/3/2010 9.5 3.2 5.6 <br /> 3/2/1999 10.18 2.53 4.92 1/18/2011 8.8 3.9 6.3 <br /> 4/13/1999 10.63 2.08 4.47 4/10/2011 7.5 5.2 7.6 <br /> 3/15/2004 10.21 2.50 4.89 8/15/2011 7.7 5.0 7.4 <br /> 9/27/2004 11.56 1.15 3.54 10/10/2011 8.9 3.8 6.2 <br /> 11/15/2004 9.49 3.22 5.61 1/26/2012 9.9 2.8 5.2 <br /> 2/24/2005 9.80 2.91 5.30 4/4/2012 9.4 3.3 5.7 <br /> 8/31/2005 8.97 3.74 6.13 7/24/2012 -- -- -- <br /> 11/30/2005 12.05 0.66 3.05 10/9/2012 12.33 0.38 2.77 <br /> 2/9/2006 10.43 2.28 4.67 1/29/2013 9.7 3.1 5.4 <br /> 4/25/2006 8.4 4.3 6.7 4/2/2013 9.7 3.0 5.4 <br /> 7/19/2006 8.7 4.0 6.4 7/20/2013 -- -- -- <br /> 10/13/2006 10.2 2.5 4.9 11/18/2013 11.6 1.1 3.5 <br /> 1/23/2007 10.1 2.6 5.0 1/28/2014 11.6 1.1 3.5 <br /> 4/24/2007 6.6 6.1 8.5 4/22/2014 11.4 1.3 3.7 <br /> 7/24/2007 7.8 4.9 7.3 7/31/2014 12.1 0.6 3.0 <br /> 10/30/2007 10.5 2.2 4.6 11/4/2014 11.8 0.9 3.3 <br /> 1/24/2008 10.2 2.5 4.9 1/29/2015 11.0 1.7 4.1 <br /> 4/15/2008 9.1 3.6 6.0 10/8/2015 11.15 1.56 3.95 <br /> 8/21/2008 8.5 4.2 6.6 10/27/2015 11.9 0.8 3.2 <br /> 10/8/2008 9.7 3.0 5.4 4/25/2016 11.0 1.7 4.1 <br /> 2/9/2009 10.1 2.6 5.0 11/4/2016 11.4 1.3 3.7 <br /> 4/12/2009 10.5 2.2 4.6 12/6/2016 11.75 0.96 3.35 <br /> 8/4/2009 8.0 4.7 7.1 5/8/2017 8.0 4.7 7.1 <br /> 10/1/2009 10.5 2.2 4.6 11/30/2017 11.78 0.93 3.32 <br /> 2/9/2010 9.6 3.1 5.5 5/4/2018 11.1 1.6 4.0 <br /> 4/11/2010 9.2 3.5 5.9 11/8/2018 11.52 1.19 3.58 <br /> 8/27/2010 8.5 4.2 6.6 5/3/2019 9.80 2.91 5.30 <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 in April/May 2004. <br /> (b)Surveyed elevations referenced to NAVD 88 and converted to NGVD 29 by subtracting 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 /> EKI Environment &Water, Inc. <br /> July 2023 Page 116 of 145 EKI B90088.03 <br />