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California Environmental Reporting System(CERS) Tiered Permitting: Unit PBR <br /> Facility/Site <br /> LATHROP WATER TREATMENT FACILITY/CORP YARD CERS ID <br /> 112 E Louise Ave 10413799 <br /> Lathrop,CA 95330 <br /> Submittal Status <br /> Submitted on 4/20/2026 by Jonah Sonner of City of Lathrop(Lathrop) <br /> Comments by submitter:Resubmitting Tiered Permitting submittal per comments from Lynsey Sammons via email-04/07/2026. <br /> Treatment Unit Identification and Details <br /> iit Type/Tier Unit ID# Unit Name <br /> PBR 1 Filter Cake Press <br /> Number of Tanks Number Of Containers/Treatment Areas Monthly Treatment Volume Unit Of Measure <br /> 0 1 3300 Pounds <br /> Specific Waste Type Treated(Narrative) Treatment Process Description(Narrative) <br /> Filter cake containing arsenic. Filtrate from vessels is machine pressed to remove excess water. <br /> Basis for Not Needing Federal Permit(Check all that apply) <br /> a. Treated Waste is not a Hazardous Waste under Federal Law(California-only Yes f. Treatment in an accumulation tank or container within 90 days for over 1000 <br /> waste) kg/month generators and 180 or 270 days for generators of 100 to 1000 <br /> kg/month. <br /> b. Treated in Waste Water Treatment Units(Tanks)and Discharged to a Publicly g. Recyclable Materials are Reclaimed to Recover Silver or other Precious Metals <br /> Owned Treatment Works(POTW)/Sewering Agency or under an NPDES Permit <br /> C. Treatment in Elementary Neutralization Units h. Empty Container Rinsing and/or Treatment <br /> d. Treatment in a Totally Enclosed Treatment Facility i. Other Basis(specify below) <br /> e. Federal Conditionally Exempt Small Quantity Generator(generated 100kg, <br /> approximately 27 gallons,or less of hazardous waste in a calendar month) <br /> Residuals Management Description(Check all that apply) <br /> a. Discharge non-hazardous aqueous waste to POTW or sewer e. Thermal Treatment <br /> b. Discharge non-hazardous aqueous waste under a NPDES permit f. Disposal to Land <br /> C. Dispose of Non-hazardous Solid Waste Residues at an Offsite Location g. Further Treatment <br /> d. Offsite Recycling Yes h. Other Method of Disposal(specify below) <br /> Hauled off-site.Clean Harbors <br /> Secondary Containment Installation Date(If Required) <br /> Permit by Rule(PBR)-Waste and Treatment Process Combinations <br /> 1. Aqueous wastes containing hexavalent chromium may be treated by the following process: <br /> Reduction of hexavalent chromium to trivalent chromium with sodium bisulfite,sodium metabisulfite,sodium thiosulfite,ferrous sulfate,ferrous sulfide,or sulfur dioxide <br /> provided both pH&addition of the reducing agent are automatically controlled <br /> 2. Aqueous wastes containing metals listed in Title 22,CCR,Section 66261.24(a)(2)and/or fluoride salts may be treated by the following technologies: <br /> pH Adjustment/Neutralization <br /> Precipitation or Crystallization <br /> Phase Separation by Filter,Centrifuge,or Gravity Settling <br /> Ion Exchange <br /> Reverse Osmosis <br /> Metallic Replacement <br /> Plating the metal onto an electrode <br /> Electrodialysis <br /> Electrowinning or Electrolytic Recovery <br /> Chemical Stabilization Using Silicates or Cementitious Reactions <br /> Evaporation <br /> Adsorption <br /> 3. Aqueous wastes with total organic carbon less than 10%as measured by EPA Method 9060 and less than 1%total volatile organic compounds as measured by EPA Method 8240 ma <br /> be treated by the following technologies: <br /> Phase separation by filtration,centrifugation or gravity settling,but excluding super critical fluid extraction <br /> Adsorption <br /> Distillation <br /> Biological processes conducted in tanks or containers and utilizing naturally occurring microorganisms <br /> Photodegradation using ultraviolet light,with or without the addition of hydrogen peroxide or ozone,provided the treatment is conducted in an enclosed system <br /> Air Stripping or Steam Stripping <br /> Printed on 4/20/2026 2:33 PM <br />