Ord 1986-134 - Laserfiche WebLink

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REV/SEt PREFACE INTRODUCTION This manual is prepared to aid in the interpretation of the -Industrial Waste Ordinance-. This ordinance was promulgated in accordance with the requirements of Title 40 - Code of Federal Regulations, Sec. 403.8(a). Pretreatment programs are required by EPA of treatment plant operators with a total design flow greater than 5 million gallons per day (MGD) and receiving industrial wastes which coulc pass through or interfere with the operation of the treatment plant or are otherwise subject to federal pretreatment standards. SAMPLING Monitoring, as required by the ordinance and described, beginning on page 68 of this manual, will vary with the industrial user. Major wastewater dischargers, as defined in Sec. 30-60 (15) of the ordinance may be required to implement a self-reporting system. Monitoring frequency will be a combination of scheduled and unscheduled monitoring. The frequencies listed are typical and may vary depending on the expected variability in types and amounts of pollutants discharged by an industry. Additional samples may be required of selected industries if it is found that the influent, effluent or sludge of the wastewater treatment plant contains excessive concentrations of pollutants listed in Appendix B to 40CFR403 or Sec. 30-61 of the ordinance. Those industries will be selected based on the list of chemical compounds submitted with the permit application or subsequent renewal. DILUTION Dilution as a substitute for pretreatment is expressly excluded by federal regulation (40CFR403.6(d». However, pH, temperature and sulfate concentration many be adjusted by reliance on dilution. Mass loading limitations (pounds per day) may be imposed it is determined that dilution is relied upon in lieu pretreatment. These limitations would be computed as: if of mg/l X 8.345 X flow = pounds per day ii