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Contact: <br />PUBLIC NOTICE: <br />Proposed No Further Action Determination <br />Alan M. Buehler <br />NEWARK GROUP INC. CASE #2 <br />State of California <br />800 CHURCH STREET, STOCKTON, SAN JOQUIN COUNTY <br />Gavin Newsom, <br />Case #391188 <br />Governor <br />GeoTracker Global ID: <br />T10000004123 <br />(916) 464-4615 <br />The Central Valley Regional Water Quality Control Board (Central <br />alan.buehler@ <br />Valley Water Board) invites public comment on the proposed No <br />waterboards.ca.gov <br />Further Action Determination and closure of the Newark Group Inc. <br />Case #2 underground storage tank case, located at 800 Church Street <br />California Environmental <br />in Stockton, CA (Site). A map showing the Site investigation area and <br />Protection Agency <br />the current remaining extent of petroleum impact to groundwater is <br />Jared Blumenfeld <br />attached as Figure 1. <br />Secretary of the <br />Environment <br />PUBLIC COMMENT PERIOD: <br />1 April through 5 June 2021 (65 days) <br />CASE SUMMARY: <br />State Water Resources <br />The site is located at 800 West Church Street, Stockton, California <br />Control Board <br />(site). In August 1985, two 4,000 -gallon diesel underground storage <br />E. Joaquin Esquivel, <br />tanks (USTs) were removed from the southwest corner of the site. An <br />Chair <br />investigation that was performed in this area in 2005 identified <br />elevated concentrations of petroleum hydrocarbons in soil and <br />groundwater. In January 2001, the San Joaquin County Environmental <br />Regional Water Quality <br />Health Department provided site closure for three USTs in the <br />Control Board, <br />southeast corner of the site: one 210,000 -gallon #6 fuel oil UST and <br />Central Valley Region <br />two 4,000 -gallon #6 fuel oil USTs. An investigation performed in this <br />Karl Longley, Chair <br />area in 2005 identified elevated concentrations of petroleum <br />hydrocarbons in soil and groundwater in this area as well. <br />Contact: <br />Between 2012 and 2017, further environmental investigations were <br />completed in the southwest and southeast corners of the site and <br />Alan M. Buehler <br />included collection of soil, soil gas, and groundwater samples. These <br />Central Valley Regional <br />investigations defined the lateral and vertical extent of the <br />Water Quality Control <br />environmental impacts at the site. Regular groundwater monitoring <br />Board <br />was conducted at the site between 2014 and 2020. Current Site <br />conditions indicate that petroleum hydrocarbon concentrations in <br />(916) 464-4615 <br />groundwater beneath the Site are decreasing, and that the current <br />alan.buehler@ <br />maximum extent of the hydrocarbon plume beneath the Site is stable <br />waterboards.ca.gov <br />or decreasing. The current maximum extent of the hydrocarbon plume <br />in groundwater at the site is shown in attached Figure 1. Based on <br />recent trends, petroleum hydrocarbons concentrations are expected to <br />decrease to background levels by 2029.` *!� E Iii <br />APR 2 8 2021 <br />I=NVIRCNMENTAL HEALTH <br />