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Large Quantity Hazardous Waste Generator Program Inspection Report Date: July 01, 2025 Facility Address: 7679 LONGE ST, STOCKTONVESTIS SERVICES LLC Facility Name: Environmental Health Department 14 CA Code of Regulations 66262.11 3030005 - Determined if waste generated is hazardous waste OBSERVATION 1: An incomplete hazardous waste determination was made for the wastewater pit sludge. EHD issued a document request to the facility on 7/3/25. As a result of the document request, EHD received test results for wastewater sludge dated 7/22/25. EHD reviewed the test results and found the determination was incomplete. The test results indicated that chromium had a Total Threshold Limit Concentration (TTLC) of 730 mg/kg. A Toxicity Characteristic Leaching Procedure (TCLP) was not provided for the chromium. In addition, a fish bioassay was not provided for the wastewater sludge. OBSERVATION 2: Per documentation provided by Aaron Spehling, GM, on 7/11/25 in response to the document request issued by EHD, wastewater pit #1 failed hydrostatic testing conducted on 9/28/24 and 3/1/25. On 9/28/24 the pit lost 12 inches within 24 hours and then 4.5 additional inches, for a total of 16.5 inches lost. On 3/1/25 the pit lost 13 inches within 24 hours and then an additional 4.5 inches, for a total of 17.5 inches lost. REGULATION GUIDANCE: Any person who generates a waste shall determine if the waste is a hazardous waste as specified in Title 22 California Code of Regulations (CCR). A business operator shall keep records of any hazardous waste determinations made in accordance with Title 22 California Code of Regulations (CCR) section 66262.11 for at least three years from the date that the waste was last sent to an on-site or off-site treatment, storage, or disposal facility. CORRECTIVE ACTION: For observation 1, immediately make a complete hazardous waste determination for the wastewater sludge and manage it according to Title 22. Submit a statement and supporting documentation with your hazardous waste determination. Provide disposal records for wastes determined to be hazardous wastes. For observation 2, determine if a release has occurred and assess the extent of contamination. Submit supporting documentation to the EHD within 30 days. This is a Repeat (Class 2) Violation. 20 CA Code of Regulations 67100.7, 67100.8 3010018 - LQG conducted a source reduction evaluation review and plan every four years OBSERVATION: This facility, a large quantity generator, does not have a complete hazardous waste management performance report on site for the year 2022. REGULATION GUIDANCE: See Title 22 California Code of Regulations sections 67100.3, 67100.7, 67100.8. CORRECTIVE ACTION: Immediately prepare a complete hazardous waste management performance report for the year 2022. Provide a corrective action statement and supporting documentation to the San Joaquin County Environmental Health Department (EHD) within 30 days. This is a (Class 2) Violation. 24 CA Health and Safety Code 25189.5(a) 3050002 - Disposed of hazardous waste at an authorized location OBSERVATION: The pH circle graph for the week of July 22, 2024 shows a pH of <2.0 released from the facility's wastewater treatment unit on July 26, 2024. The hazardous waste release to the local Publicly Owned Treatment Works (POTW) onsite connection and was approximately 450-gallons (flow rate of 30gpm for approximately 15 minutes). The release was documented on the facility's July 2024 monthly pH Compliance Reporting Form. REGULATION GUIDANCE: The disposal of any hazardous waste, or the causing thereof, is prohibited when the disposal is at a facility which does not have a permit from the department issued pursuant to this chapter, or at any point which is not authorized according to this chapter. Hazardous wastes shall be disposed of only by transportation to a permitted hazardous waste treatment, storage, and disposal facility (TSDF) or other authorized point. CORRECTIVE ACTION: Immediately cease disposal of hazardous waste to unauthorized locations. Provide a corrective action statement to the San Joaquin County Environmental Health Department within 30 days. This is a (Class 1) Violation. 1868 E. Hazelton Avenue | Stockton, California 95205 | T 209 468-3420 | F 209 464-0138 | www.sjgov.org/EHD Page 6 of 9EHD - CUPA Inspection Report IS02 8/28/2025FA0014430 PR0537564 4521283