Sanitary and grease
$42,000–$68,000
- Method
- Fixture schedule for the specified kitchen run against the 2021 IPC as adopted by the City of Selma; interceptor sized at IPC 1003.3 on a 30-minute retention basis. Existing unit identified by tag; sewer tap depth and invert taken from the city's as-built.
- Measured
- 148 drainage fixture units (three-compartment sink 12, dish machine 12, mop basin 6, prep sinks 2×4, hand sinks 4×2, floor drains 8×2, balance FOH). Existing interior unit: 40 gal / 20 GPM, tagged 2009.
- Finding
- The existing unit is under-sized by roughly an order of magnitude against the fixture count and was grandfathered under the prior tenant's original permit; a change of tenant re-triggers review and the grandfather does not carry. Sizing lands on a 1,000-gallon exterior interceptor. The rear service area has 18 linear feet of unobstructed slab and the sewer tap sits at 4 feet — both adequate, which is why this prices as a routine installation rather than a re-route.


