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 - MWM-13 <br /> Groundwater Elevation <br /> 000 20 <br /> 0 <br /> o z 15 <br /> ai 10 <br /> W <br /> GJ � <br /> 3 5� <br /> v <br /> 0 <br /> o c <br /> c7 M <br /> m -5 <br /> 41 u'f lD r� W Ql O -I N M u'1 lD I� 00 Ql O -I N M � uO lD I� 00 Ql O c-I N M � u'f <br /> GJ 01 01 01 01 01 O O O O O O O O O O r-I r-I r-I r-I r-I r-I r-I r-1 N N N N N N <br /> co co co co co co co co co co co co co co co co co co co co co co co co co co co co co co co <br /> Date <br /> MWM-13 MWM-13 <br /> Measuring Point NGVD 29 NAVD 88 Measuring Point NGVD 29 NAVD 88 <br /> MP 10.74 13.13 MP 10.74 13.13 <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 /> 5/24/2005 7.70 3.04 5.43 5/3/2012 8.00 2.74 5.13 <br /> 6/28/2005 9.29 1.45 3.84 7/31/2012 9.64 1.10 3.49 <br /> 10/12/2005 10.50 0.24 2.63 10/25/2012 9.16 1.58 3.97 <br /> 1/31/2006 8.94 1.80 4.19 1/31/2013 8.09 2.65 5.04 <br /> 4/25/2006 7.62 3.12 5.51 5/1/2013 8.68 2.06 4.45 <br /> 7/19/2006 8.93 1.81 4.20 8/2/2013 9.26 1.48 3.87 <br /> 10/13/2006 11.00 -0.26 2.13 11/21/2013 9.08 1.66 4.05 <br /> 1/23/2007 9.56 1.18 3.57 2/5/2014 9.52 1.22 3.61 <br /> 4/24/2007 9.29 1.45 3.84 4/24/2014 9.26 1.48 3.87 <br /> 7/24/2007 9.51 1.23 3.62 8/7/2014 9.75 0.99 3.38 <br /> 10/30/2007 10.02 0.72 3.11 11/3/2014 9.80 0.94 3.33 <br /> 1/24/2008 7.54 3.20 5.59 1/29/2015 8.70 2.04 4.43 <br /> 4/15/2008 8.80 1.94 4.33 10/22/2015 10.15 0.59 2.98 <br /> 8/19/2008 9.55 1.19 3.58 10/27/2015 10.16 0.58 2.97 <br /> 11/19/2008 9.21 1.53 3.92 4/22/2016 8.44 2.30 4.69 <br /> 2/17/2009 7.18 3.56 5.95 11/1/2016 9.62 1.12 3.51 <br /> 4/14/2009 8.30 2.44 4.83 12/7/2016 9.71 1.03 3.42 <br /> 8/3/2009 9.03 1.71 4.10 5/5/2017 6.86 3.88 6.27 <br /> 10/26/2009 9.07 1.67 4.06 11/27/2017 8.82 1.92 4.31 <br /> 1/27/2010 7.70 3.04 5.43 5/4/2018 8.41 2.33 4.72 <br /> 4/21/2010 8.91 1.83 4.22 11/6/2018 9.90 0.84 3.23 <br /> 8/24/2010 8.85 1.89 4.28 4/29/2019 8.00 2.74 5.13 <br /> 10/26/2010 8.69 2.05 4.44 10/31/2019 9.29 1.45 3.84 <br /> 1/24/2011 7.61 3.13 5.52 5/8/2020 8.82 1.92 4.31 <br /> 4/21/2011 7.40 3.34 5.73 11/3/2020 9.61 1.13 3.52 <br /> 8/18/2011 8.01 2.73 5.12 5/4/2021 9.58 1.16 3.55 <br /> 10/28/2011 7.55 3.19 5.58 10/19/2021 10.17 0.57 2.96 <br /> 1/24/2012 8.12 2.62 5.01 5/4/2022 9.60 1.14 3.53 <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 /> EKI Environment &Water, Inc. <br /> July 2023 Page 38 of 145 EKI B90088.03 <br />