Double Branch WWTP
Discharge Monitoring Report, May 2003

Parameter Permit Requirement Plant Measurement
Dissolved Oxygen (DO) 6.0 mg/l daily minimum 6.7 mg/l
5-day BOD, Raw Report, weekly average 195 mg/l
  Report, monthly average 171 mg/l
5-day BOD, Effluent 36.0 mg/l max weekly average 4.0 mg/l
  24.0 mg/l max monthly average 2.0 mg/l
pH, Effluent 6.0 SU daily minimum 7.6 SU
  9.0 SU daily maximum 7.9 SU
Total Suspended Solids, Raw Report, weekly average 560 mg/l
  Report, monthly average 292 mg/l
Total Suspended Solids, Effluent 45.0 mg/l weekly average 25.0 mg/l
  30.0 mg/l monthly average 10.0 mg/l
Ammonia, Effluent 2.4 mg/l weekly average 0.2 mg/l
   1.6 mg/l monthly average 0.19 mg/l
Total Flow Report, monthly average MGD 0.923 MGD
  Report, weekly average MGD 1.279 MGD
Fecal Coliform Count, Effluent 2000 col./100 ml daily maximum 49 col./100 ml
  200 col./100 ml monthly average 28 col./100 ml
5-day BOD percent Removal 85% monthly average 99%
Total Suspended Solids Removal 85% monthly average 97%

Comments and Explanations of Violations

1) TSS Effluent limits were exceeded one day (21 May 03) due to heavy rains and excessive inflow/infiltration.

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