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Environmental Health Department <br />Tiered Permitting Program Inspection Report <br />Facility Name:Facility Phone:Date: <br />LATHROP WATER TREATMENT FACILITY / CORP YARD (209) 941-7200 December 8, 2025 <br />CERS ID:Facility Address: <br />2112 E Louise AVE, Lathrop, CA 95330 10413799 <br />Phone: <br />(209) 941-7443 <br />Title: <br />Compliance Manager <br />Inspection Contact: <br />Jonah Sonner <br />Inspection Type: <br />Routine <br />Program: <br />2231 - HAZARDOUS WASTE PBR FACILITY <br />Consent Given By: <br />Frank Vallejo, Utility Operations Supervisor <br />Consent For: <br /> Inspection Photos Samples <br />Amount of hazardous waste generated in the last <br />calendar year (January - December): <br />EPA/State ID: <br />CAL000379085366.26033 tons <br />CCR = California Code of Regulations HSC = Health and Safety Code CFR = Code of Federal Regulations EHD = Environmental Health Department <br />OUT = Violation R = Repeat Violation COS = Corrected on site during inspection <br />1 HSC 6.5 25201(a) 3250005-Obtained a permit to treat hazardous waste OUT R COS <br />2 HSC 6.11 25404(e)(4) 3210043-Program data reported in CERS OUT R COS <br />3 22 CCR 45 67450.2(b)(2)3210002-Onsite PBR HW Treatment Notification Information submitted <br />electronically <br /> OUT R COS <br />4 22 CCR 45 67450.2(b)(3) <br />(B) and (G) <br />3210044-Generator and treatment unit information, and unit location map <br />submitted in CERS <br /> OUT R COS <br />5 22 CCR 45 67450.3(c)(1) 3210053-Annual Tiered Permit notification electronically submitted to the CUPA OUT R COS <br />6 22 CCR 45 67450.3(c)(2) 3210007-Amended Onsite PBR HW Treatment Notification Information submitted <br />electronically <br /> OUT R COS <br />7 22 CCR 45 67450.13(a) <br />(1), (b) <br />3210026-Completed and submitted a Cert of Financial Assurance, Closure Cost <br />Estimate, & Fin Assurance Mech <br /> OUT R COS <br />8 22 CCR 45 67450.13(a) <br />(2) <br />3210028-Inflation adjustment to the Closure Cost Estimate was completed by <br />March 1 of each year <br /> OUT R COS <br />9 22 CCR 45 67450.13(a) <br />(3) <br />3210030-Closure Cost Estimate was revised upon increase in closure cost & <br />latest estimate maintained <br /> OUT R COS <br />10 22 CCR 45 67450.3, <br />67450.7, HSC 6.5 <br />25200.14(b)(1) <br />3210022-Phase 1 Environmental Assessment Checklist submitted OUT R COS <br />11 22 CCR 15 66265.77(a), <br />66265.56(j); 22 CCR 45 <br />67450.3(c)(9)(D) <br />3240002-A written incident report for release, fire and/or explosion was submitted OUT R COS <br />12 22 CCR 45 67450.3(c) <br />(10) <br />3210039-PBR annual Report submitted, when requested. OUT R COS <br />13 22 CCR 45 67450.3(c)(9) <br />(F); 22 CCR 15 <br />66265.192(a), 66265.192 <br />(h) <br />3210014-New tank assessment completed prior to placing system into service <br />and was reviewed/certified by PE <br /> OUT R COS <br />14 22 CCR 67450.3(c)(9)(F); <br />22 CCR 15 66265.192(h) <br />3210042-P.E. assessment and/or reassessment of the hazardous waste tank <br />system completed <br /> OUT R COS <br />15 22 CCR 45 67450.3(c)(9) <br />(F); 22 CCR 15 <br />66265.192(k) <br />3210012-HW treatment tank assessment completed and includes all required <br />information. <br /> OUT R COS <br />16 22 CCR 15 66265.191(a), <br />66265.191(b), 66265.191 <br />(c), 66265.191(e) <br />3210013-Existing HW tank system without secondary containment has been <br />assessed and certified annually <br /> OUT R COS <br />17 22 CCR 15 66265.191(g); <br />22 CCR 45 67450.3(c)(9) <br />(F) <br />3210015-Existing HW tank system assessment is complete OUT R COS <br />1868 E. Hazelton Avenue | Stockton, California 95205 | T 209 468-3420 | F 209 464-0138 | www.sjgov.org/EHD <br />Page 1 of 5EHD - CUPA Inspection Report IS03 <br />CP25 - Tiered Permitting PBR <br />1/27/2026FA0022165 PR0543928 4585858