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Center Mart - 5Su Super CENEID 17 March 2016 <br /> p E <br /> 701 East Charter Way <br /> Stockton, San Joaquin County 12 2 Lu <br /> ENv1RON�E�MENT <br /> As detailed in the table above, in addition to being exempt due to being an active service <br /> station, concentrations of petroleum hydrocarbons in the one round of soil gas samples did <br /> not exceed LTCP screening levels. Soil gas data is presented on Table 4 and soil gas <br /> sample locations are depicted on Figure 7. <br /> 8. San Joaquin County Local Over-Site Program staff determined the Site to be eligible for <br /> closure on 14 April 2015, and requested distribution of a Fact Sheet to interested parties for <br /> public comment. The Fact Sheet was distributed on 15 May 2015 notifying the recipients <br /> that a request for no further action was being considered and informed them of how to <br /> submit any comments or questions. The public comment period ended on 15 July 2015. No <br /> comments were received by San Joaquin County staff during the 60-day public comment <br /> period, and no comments were received by Regional Water Board staff. <br /> 9. The remaining 10 groundwater monitoring wells, four vapor extraction wells, and two <br /> groundwater extraction wells were destroyed in January 2016. <br /> Recommendations <br /> Based on available data, the Site meets the State Water Board's Low Threat Closure Policy. <br /> Groundwater concentrations appear to be stable to declining. Site data does not exceed the <br /> dermal contact and outdoor air, and indoor air vapor intrusion screening criteria outlined in the <br /> LTCP. Remaining Site wells will be destroyed prior to issuance of the NFA letter. <br /> Attachment(s): <br /> Figure 1 —Location Map <br /> Figure 2 — Site Plan <br /> Figure 3 — Groundwater Elevation <br /> Figure 4 — Dissolved TPH-G <br /> Figure 5 — Dissolved Benzene <br /> Figure 6 — Dissolved MTBE <br /> Figure 7 — Site Plan (Soil Gas Sample Locations) <br /> Table 1 — Groundwater Elevations <br /> Table 2 —Analytical Results of Groundwater Samples <br /> Table 3 —Analytical Results of Soil Samples <br /> Table 4—Analytical Results of Soil Vapor Samples <br /> Attachment A — DPE Data and System Layout Map <br /> Attachment B — GeoTracker Post Remedial Trend Graphs <br /> Attachment C — CPT Data <br />