Appendix B1. Minimum Treatment Requirements for Commercial Facilities

Generator Source Chart — Food Service
Table I

Generators/Source	Threats to Sewerage System	Minimum Treatment Requirements
Bakery (cooking cakes, cookies, pies)	Grease, Flour, Solids	Grease Trap 1,000 gal. minimum
Butcher	Grease, Solids	Grease Trap 1,000 gal. minimum capacity. Waste from meat products.
Caterer	Grease	Grease Trap 1,000 gal. minimum capacity
Chicken (BBQ/Charcoal cooking on site)	Grease, Solids	Grease Trap 1,000 gal. minimum capacity
Chicken (fresh) retail only, with meat cutting and preparation of fresh meat	Grease, Solids	Grease Trap 1,000 gal. minimum capacity
Church (hot foods cooked and served) Commercial kitchen	Grease, Solids	Grease Trap 1,000 gal. minimum capacity
Coffee/Sandwich Shop (no foods prepared)	Waste from by products, cream and milk	Grease Trap 40 lb. minimum capacity
Coffee/Sandwich Shop (hot foods cooked and served)	Grease	Grease Trap       0—66 seats 1,000 gal. 67—100 seats 1,500 gal. 101—129 seats 2,000 gal.
Commercial Kitchen (Caterer)	Grease, Solids	Grease Trap 1,000 gal. minimum capacity
Community Halls, Country Club (hot food cooked and served	Grease, Solids	Grease Trap 1,000 gal. minimum capacity
Correctional Institution (Jail)	Grease	Grease Trap 100—200 meals - 1,000 gal. 201—300 meals - 1,500 gal. 301—400 meals - 2,000 gal. 401—600 meals - 3,000 gal. 601—800 meals - 4,000 gal. 801—900 meals - 4,500 gal. 901—1200 meals - 6,000 gal.
Daycare/Preschool Centers (no hot food prepared; all food reheated in micro-wave, no commercial kitchen.)	Waste from clean-up	Grease Trap 40 lb. minimum capacity
Daycare/Preschool Centers (hot food prepared: commercial kitchen)	Grease	Grease Trap 1,000 gal. minimum capacity
Delicatessen (hot food cooked)	Grease	Grease Trap 1,000 gal. minimum capacity
Delicatessen (no hot food served, no meat cooked	Waste from clean-up Cold foods, salads	Grease Trap 40 lb. minimum capacity
Doughnut Shop (retail only)	None	Written declaration required that no hot food will be prepared or served.
Doughnut Shop (cooking on site)	Grease	Grease Trap 1,000 gal. minimum capacity
Fast Food Outlets (e.g. McDonald's Pizza Hut, Arby's, KFC)	Grease, Solids	Grease Trap 1,500 gal. minimum capacity
Fish Shop (retail) no cooking on site	Scales, Fish guts	Grease Trap 70 lb. minimum capacity
Fish Shop (cooking on site)	Grease, Solids	Grease Trap 1,000 gal. minimum capacity
Gas Station with food Service( fast food outlets	Grease	Grease Trap 1,500 gal. minimum capacity
Gas Stations with food service (sandwich shop, no hot food preparation)	Grease	Grease Trap 40 lb. minimum capacity Waste from clean-up and handling area.
Grocery Store (no food service, no cooking on site)	Grease, Solids	Grease Trap 1,500 gal. minimum capacity. Waste from meat product handling area
Grocery Store (full service store, food preparation; franchise food outlet in store)	Grease, Solids	Grease Trap 3,000 gal. minimum capacity
Hospital Kitchen	Grease	Grease Trap 1,500 gal. minimum capacity
Hotel with restaurant (hot foods cooked and served)	Grease	Grease Trap       0—66 seats 1,000 gal. 67—100 seats 1,500 gal. 101—129 seats 2,000 gal. 130—199 seats 3,000 gal. 200—299 seats 4,500 gal.
Hotel (reheating food in microwave; continental breakfast; kitchen equipment limited)	Waste from clean-up	Grease Trap 40 lb. minimum capacity
Hotel (no cooking on site; no hot foods served)	None	Written declaration required that no hot food will be prepared or served.
Ice Cream Shop (with hot food service) (making ice cream on site)	Grease	Grease Trap 1,000 gal. minimum capacity
Movie Theater (with food service, reheat in microwave)	Waste from clean-up	Grease Trap 40 lb. minimum capacity
Nightclub/Multi-Entertainment Complex	Grease	Grease Trap       0—66 seats 1,000 gal. 67—100 seats 1,500 gal. 101—129 seats 2,000 gal. 130—199 seats 3,000 gal. 200—299 seats 4,500 gal.
Nursing Home, Assisted Living Care Facility (with full service kitchen)	Grease. Solids	Grease Trap       0—69 beds 1,000 gal. 70—150 beds 1,500 gal.
Office Complex (food service on site)	Grease, Solids	Grease trap determined by tenant occupant
Pizza Cooking (take away/home delivery)	Grease	Grease Trap 1,000 gal. minimum capacity
Pizza Cooking (reheating) no preparation or washing up on site; pizza heated in retail container and sold for consumption	None	Written declaration required that no hot food will be prepared or served.
Recreation Center (hot food preparation) e.g. bowling alley, skating rink	Grease, Solids	Grease Trap 1,000 gal. minimum capacity
Restaurant	Grease, Solids	Grease Trap       0—66 seats 1,000 gal. 67—100 seats 1,500 gal. 101—129 seats 2,000 gal. 130—199 seats 3,000 gal. 200—299 seats 4,500 gal. 300—399 seats 6,000 gal.
School Cafeteria **	Grease, Solids	Grease Trap 100—200 meals - 1,000 gal. 201—300 meals - 1,500 gal. 301—400 meals - 2,000 gal. 401—600 meals - 3,000 gal. 601—800 meals - 4,000 gal. 801—900 meals - 4,500 gal. 901—1,200 meals - 6,000 gal.
Shopping Center - Mall (food court)	Grease, Solids	Grease Trap       0—66 seats 1,000 gal. 67—100 seats 1,500 gal. 101—129 seats 2,000 gal. 130—199 seats 3,000 gal. 200—299 seats 4,500 gal. 300—399 seats 6,000 gal.
Shopping Centers (retail strip mall)	Grease, Solids	Grease trap determined by tenant, type of food service.
Take-Out Food Service (hot preparation)	Grease	Grease Trap 1,000 gal. minimum capacity
Take-Out Food Service (cold food preparation)	Waste from clean-up	Grease Trap 40 lb. minimum capacity

 

* Wherever an exterior grease trap is required but installation is not possible, an interior pretreatment system shall be installed that equals or exceeds the minimum. Alternate system shall be approved by the County.

** Additional grease traps will be required if it is determined that, due to the number of food establishments in the food court, the seating schedule will not provide adequate trap capacity needed.

Generator Source Chart — Motor Vehicle Washing and Maintenance
Table II

Generators/Source	Threats to Sewerage System	Minimum Treatment Requirements
Car Detail Shop (stationary)	Oil, Solids	Oil/Water Separator 1,000 gal. capacity Sand trap based on size of facility; material safety data sheets required on high volume facilities for soap products used to clean cars.
Car Detail Shop (mobile)	Oil, Solids	Not allowed unless discharge permit can be obtained from Public Works Department or operator provides a tank to collect wastewater. Wastewater must be disposed of at a facility that accepts this type of waste.
Car Maintenance Shop (1—9 Bays) (e.g. oil change and car repair)	Oil, Solids	Oil/Water Separator 1,500 gal. capacity for each process on site. Sand trap at designated areas, and vehicle bays. Material safety data sheets for soap products used to clean cars.
Car/Truck Wash (automatic) facility has staff on site (200—250 cars per day)	Oil, Solids	Oil/Water Separator 3,000 gal. capacity; sand trap based on size of facility, material safety data sheets for soap products used to clean cars. Reclaim systems are allowed to reduce oil water separator size. ***
Car Wash/Self Service (1—9 bays) (pressure wash hoses) no attendant on site	Oil, Solids	Oil/Water Separator 1,500 gal. capacity; sand trap required in each bay prior to discharge to oil/water separator.
Gas Station with 1 bay car wash (automatic) self-service	Oil, Solids	Oil/Water Separator 1,500 gal. capacity; based on size of facility, material safety data sheets for soap products used to clean cars.
Residential Properties with 1 bay car wash area (e.g. apartment complex) Car wash area covered with a roof. Car wash discharge cannot impact any storm drains on site.	Oil, Solids	Oil/Water Separator 200 gal. capacity. Sand Trap required in car wash bay area. Signs posted for residents; "No vehicle maintenance allowed."

 

*** Reclaim systems can be used in conjunction with oil/water separator systems or can be used alone as a pretreatment system. However, the reclaim system must have a tank capacity for oil/water separation prior to discharge to sanitary sewer. Car maintenance shops with no floor drains or discharge to sanitary sewer through service area trench drains will be required to supply the county in writing their plan for dry clean up.

(Res. No. 06-1167, 11-15-06)