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691 N. Laverne Avenue, Ste 101 <br /> Fresno CA 93727 <br /> P 559.497.2880 <br /> ASSOC I A T E S`w www.bskassociates.com <br /> Sent via email: hnussbaumer@sigov.ore <br /> August 15, 2024 BSK Project Number E2001601F <br /> Ms. Helene Nussbaumer CM, Airport Deputy Director <br /> Stockton Metropolitan Airport <br /> 5000 S.Airport Way,Suite 202 <br /> Stockton, California 95206 <br /> Subject: Progress Report <br /> Additional Site Investigation <br /> Per-and Polyfluoroalkyl Substances in Soil and Groundwater <br /> Stockton Municipal Airport <br /> 5000 S.Airport Way, Stockton, California <br /> (GeoTracker#T10000012778) (WDR ORDER NO.WQ-2019-0005-DWQ) <br /> Dear Ms. Nussbaumer: <br /> In accordance with your request and authorization, BSK is issuing this progress report. The progress <br /> report was described in Section 6.1.4 of BSK's "Revised Workplan, Additional Site Investigation, Per- and <br /> Polyfluoroalkyl Substances in Soil and Groundwater, Stockton Municipal Airport, 5000 S. Airport Way, <br /> Stockton, California, (GeoTracker#T10000012778) (WDR ORDER NO. WQ-2019-0005-DWQ)" dated April <br /> 15, 2024. The workplan stated: <br /> "Once the first phase of the investigation is complete, the raw data from that work will be evaluated for <br /> the second phase of the investigation. A progress report will be prepared which will include: <br /> • tabulated results of PFAS concentrations in soil and groundwater, <br /> • location map including, borings, and monitoring wells installed in the first phase of <br /> investigation, and proposed locations of monitoring wells for the second phase of the <br /> investigation, <br /> • field boring logs, and field sample logs(if applicable), and <br /> • analytical reports." <br /> That information is attached. <br /> Environmental, Geotechnical,Construction Services,Analytical Testing-An Employee-Owned Company <br />