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Grease Interceptor Pumping in Stockton

Vacuum-truck service for the in-ground tank behind the building: full contents out, baffles and tees checked, hauler documentation written to Chapter 13.40, waste manifested to an approved facility.

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“Pumped” has a definition here

Stockton’s ordinance does not let a skim pass as a service. The chapter requires interceptors be maintained “by periodic removal of the full contents of the interceptor, which includes wastewater, accumulated FOG, floating materials, sludge and solids.” Every one of our interceptor visits removes all of it, scrapes the walls, inspects the baffles and sanitary tees while the tank is open, refills with clean water so the trap seal re-forms, and hands you documentation that says exactly that.

The schedule the city will accept

Interceptors must be “fully pumped out and cleaned once every three months or when the combined FOG and solids accumulation ... equals 25 percent of the design hydraulic depth of the grease interceptor, whichever occurs first.” The frequency may be adjusted to your actual grease load — “but shall not be less frequent than once every three months unless specific written authorization from the Director is obtained.” In practice a fryer-heavy restaurant on a 750-gallon tank hits 25% well before three months; a light-menu cafe on the same tank is bound by the calendar. Run your numbers.

What you get after every visit

That list is not ours; it is the ordinance’s. Keep the sheet in the three-year file. Checklist and why each line is there →

Access and manholes

Stockton requires a 24-inch access manhole over each interceptor chamber and each sanitary tee. Lids under a dumpster corral or a pallet stack are an inspection finding before anyone opens them. We will tell you if yours are blocked; the inspector will tell you less politely.

Tank size is the quote

It is on the lid, the as-built or your last manifest. One call does the rest.

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Plain-English guidance, not legal advice. Quotations are from the Stockton Municipal Code, Title 13, Chapter 13.40 “Fats, Oils and Grease” (Ord. 002-10 C.S.), read on the city’s code publisher on 2026-10-08, and from the City of Stockton Municipal Utilities Department FY 2026-27 Adopted Fee Schedule (effective 7/1/2026). Where a section number is not shown, the chapter’s heading is cited instead. Confirm current requirements with the Municipal Utilities Department, (209) 937-8700.
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