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-CLSP-12 <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 /> o e <br /> C7 0 <br /> -5 <br /> a� Ln 1.0 r-. oo rn or-i N m v Ln �.O r� oo rn or-1 N m � Ln �.o r*1 oo rn 0 -1 N m � Ln <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 /> CLSP-12 <br /> Measuring Point NGVD 29 NAVD 88 <br /> MID 12.81 15.2 <br /> Groundwater Groundwater <br /> Date Sampled DTW(ft) Elevation Elevation <br /> ft,NGVD 29 ft,NAVD 88 <br /> 9/18/2017 9.81 3.00 5.39 <br /> 11/29/2017 10.45 2.36 4.75 <br /> 2/28/2018 9.45 3.36 5.75 <br /> 6/15/2018 7.46 5.35 7.74 <br /> 11/6/2018 11.51 1.30 3.69 <br /> 1/25/2019 8.30 4.51 6.90 <br /> 4/30/2019 7.59 5.22 7.61 <br /> 8/2/2019 9.63 3.18 5.57 <br /> 10/30/2019 11.71 1.10 3.49 <br /> 1/27/2020 10.03 2.78 5.17 <br /> 5/11/2020 9.73 3.08 5.47 <br /> 8/5/2020 11.89 0.92 3.31 <br /> 11/5/2020 12.30 0.51 2.90 <br /> 1/29/2021 10.80 2.01 4.40 <br /> 5/5/2021 11.98 0.83 3.22 <br /> 8/4/2021 11.91 0.90 3.29 <br /> 10/18/2021 12.18 0.63 3.02 <br /> 1/28/2022 10.70 2.11 4.50 <br /> 5/3/2022 12.90 -0.09 2.30 <br /> 9/29/2022 13.37 -0.56 1.83 <br /> 11/9/2022 13.44 -0.63 1.76 <br /> 2/1/2023 11.75 1.06 3.45 <br /> 4/4/2023 6.90 5.91 8.30 <br /> Abbreviations: <br /> CLSP=Central Lathrop Specific Plan <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,August 2017. <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.htmi) <br /> EKI Environment &Water, Inc. <br /> July 2023 Page 17 of 145 EKI B90088.03 <br />