Discharge Limits

Discharge Limits

INDUSTRY DISCHARGE LIMITS
Biochemical Oxygen Demand 200 Mg/L pH 5.0 – 10.0
Oil & Grease 100 Mg/L or 25 Mg/L soluble oil Suspended Solids 250 Mg/L
Arsenic 1.0 Mg/L Cadmium 1.0 Mg/L Copper 4.0 Mg/L
Cyanide 1.0 Mg/L Lead 1.0 Mg/L Mercury 0.10 Mg/L
Nickel 4.0 Mg/L Hex. Chrom. 2.5 Mg/L Tot. Chrom. 5.0 Mg/L
Zinc 4.0 Mg/L Silver 1.0 Mg/L PCB’s None
Phenol 10.0 Mg/L Ammonia 20.0 Mg/L
WASTEWATER PLANT DISCHARGE LIMITS
Effluent Characteristic Lbs./day Monthly Average Lbs./day Weekly Average Monthly Average Weekly Average
C.B.O.D. Summer * 1335 2003 20 Mg/L 30 Mg/L
Winter ** 1669 2670 25 Mg/L 40 Mg/L
T.S.S. Summer * 1602 2403 24 Mg/L 36 Mg/L
Winter ** 2003 3004 30 Mg/L 45 Mg/L
Ammonia, as N
Summer * 227 340 3.4 Mg/L 5.1 Mg/L
Winter ** 354 534 5.3 Mg/L 8.0 Mg/L
E-Coli 235/100 ml 125/100 ml
pH Should be between 6.0 – 9.0
* Summer limitations apply from May through November 30 each year.
** Winter limitations apply from December 1 through April 30 each year.
PLANT DESIGN:  8.0 MGD with 16.0 MGD daily peak.
AVERAGE FLOW: 2007 5.6 MGD