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��J` Appendix 8—Subject Properties and Adjacent Sites Summaries Port of Stockton, Stockton, CA 2130 WEST WASHINGTON STREET, CARGILL The potential contaminant of concern at 2130 West Washington Street is fertilizer, and the potential medium of concern is soil. A 1991 Phase I and Phase II ESA at this site revealed elevated nitrogen concentrations in soil due to feed product contamination, later confirmed by a 1993 soil investigation. 30 tons of nitrogen-enriched soil were excavated in 1994 and the affected area was covered by a concrete footing for a tank farm. In 1998, the site was issued a Conditional No Further Action Letter. The release of fertilizer to soil at Cargill and its proximity to the Site (<500 ft) represent an HREC for the Site. 2040 WEST WASHINGTON STREET, CAL FARM SUPPLY The contaminants of concern at 2040 West Washington Street are: benzene, dinoseb, diesel, fertilizer, MTBE/TBA/other fuel oxygenates, nitrate, other acid or corrosive, other solvent or non- petroleum hydrocarbon, pesticides/herbicides, petroleum/gasoline/oils, toluene, and xylene. The potential medium of concern is groundwater and, more specifically, an aquifer used for drinking water supply. On April 1911, 1990, a 1,000-gallon diesel UST was removed from the site. In 2005, following remedial action, concentrations of all contaminants measured in groundwater were in decline. In December 2017, this site was issued a No Further Action letter. The historical release of contaminants to groundwater at this site and its proximity to the Site (<500) ft represent an HREC for the Site. 2025 WEST HAZELTON AVENUE, KOPPEL STOCKTON TERMINAL AND STORMWATER POND The potential contaminants of concern at 2025 West Hazelton Avenue are nitrate and other inorganic/salt. The potential media of concern are soil and groundwater. Since the 1990s, excess nitrogen has been detected in soil and groundwater around the site. On May 30th, 2014, following phytoremediation initiated in 2000, the stormwater pond associated with Koppel Stockton Terminal was issued a No Further Action letter. Remediation continues at the Koppel Stockton Terminal site to this day, with nitrate and ammonia concentrations in soil and groundwater decreasing or stabilizing. The elevated concentrations of nitrate represent a REC to the Site. The stormwater pond represents an HREC to the Site. Site Moss Track -APN: 16331001 2005 NAVY DRIVE, STOCKTON TRUCK TERMINAL The potential contaminants of concern at 2005 Navy Drive are gasoline and chlorinated hydrocarbons. The potential medium of concern is an aquifer used for drinking water supply. In 1987, one 1,000-gallon waste oil UST and one 12,000-gallon diesel UST were removed from the site. VOCs present in groundwater at the site were at concentrations above maximum contaminant levels, and they did not appear to be related to the USTs at the site. On December 21 st, 2012, the Stockton Truck Terminal site received a No Further Action letter. The historical release of gasoline and chlorinated hydrocarbons at the Stockton Truck Terminal and its proximity to the Site represents an HREC for the Site.