Wastewater Utility

Facility Statistics

Actual average daily flow - 3,000,000 gallons per day
Design average daily flow - 4,630,000 gallons per day
Design average wet weather flow – 7,910,000 gallons per day
Design peak wet weather flow – 28,000,000 gallons per day
Population design (year 2020) – 29,370
Maximum loadings per day:
- BOD5 – 11,000 lb/day
- Total Suspended Solids (TSS) – 11,000 lb/day
- Nitrogen – 1,550 lb/day
- Phosphorus – 350 lb/day
Receiving stream – Mill Creek
Permit classification – limited aquatic life
- Permit Limits:
  - CBOD5:
    - Weekly Average – 25 mg/L or Part Per Million(PPM)
    - Monthly Average – 16 mg/L or PPM
  - Total Suspended Solids:
    - Weekly Average – 30 mg/L or PPM
    - Monthly Average – 20 mg/L or PPM
  - Phosphorus:
    - Monthly Average – 1.0 mg/L or PPM
  - Dissolved Oxygen:
    - Daily Minimum – 4.0 mg/L or PPM
  - Copper:
    - 42 ug/L or PPB
  - PH Range – 6.0 – 9.0 standard units
Influent Pumps:
- (3) Screw pumps with ability to pump 15 MGD each or 10,500 gallons per minute
Preliminary Treatment:
- (2) Fine screens with 1/8” openings and wash press
Oxidation Ditch:
- (2) 400 ft x 65 ft tanks which hold 2,750,000 gallons each
Final Clarifiers:
- (3) 100 ft diameter x 15 ft SWD circular clarifiers which hold 881,000 gallons each
Biosolids Storage Tanks:
- (2) 120 ft diameter x 24 ft SWD circular concrete tank which holds 2,030,000 gallons
Gravity Belt Thickener
- (1) 3 meter Gravity Belt Thickener