FUTURE REQUIREMENTS AND GOALS Dennis Ryan Plant Manager

TREATMENT PLANT CAPACITY

TREATMENT OF METALS No capacity for metals treatment or removal is designed into treatment plants. Fate of metals received by treatment plant and impact is site specific. Type of treatment process used Size and quality issues of receiving stream Type of beneficial solids reuse

OBJECTIVES OF FEDERAL PRETREATMENT PROGRAM Prevent Pass-through Prevent Interference (including biosolids) Improve/encourage recycling and reclamation of biosolids

METHODS TO ACCOMPLISH OBJECTIVES Prohibited Discharge Standards apply to all Industrial Users are national standards Categorical Pretreatment Standards apply to industries subject to 40 CFR Parts 405-471 technology based limitations on pollutant discharges from industries Local Limits are site specific

NEED FOR LOCAL LIMITS Categorical Standards do not address all contributed pollutants. Categorical Standards may not adequately protect the POTW, it’s collection system, biosolids, or the receiving water. Local limits take precedence over Categorical Standards if local limits are determined to be stricter.

LOCAL LIMITS DEVELOPMENT In progress per EPA Guidance Manuals Will be submitted for approval to IDNR Public Notice and possible Public Hearing Incorporate into sewer ordinances and Industrial Wastewater Permits Must be reviewed and updated periodically

STEPS IN LOCAL LIMITS DEVELOPMENT 1. Collect data on pollutant sources residential commercial industrial hauled waste 2. Determine treatment plant removal efficiencies Is different for different pollutants Need influent, effluent, biosolids data

STEPS IN LOCAL LIMITS DEVELOPMENT 3. Analyze limiting criteria NPDES limits biological process inhibition biosolids disposal limits water quality standards collection system problems 4. Determine Maximum Allowable Headworks Loading (in pounds) 5. Set aside a Safety and Growth Factor

STEPS IN LOCAL LIMITS DEVELOPMENT 6. Allocate remaining loading residential commercial industrial hauled waste Is mass (pounds) based, not concentration.

ALLOCATION OF INDUSTRIAL LOAD Uniform concentration for all industries Uniform concentration for industries above domestic strength in that pollutant Mass Proportion limits Selected Industrial Reduction Limits Need to know what is being discharged by each industry Need to know if an industry changes their discharge characteristics

NEW FEDERAL REGULATIONS Transportation Equipment Cleaning Industry 40 CFR 442 Final Rule effective September 13, 2000 Compliance date ASAP, but no later than August 14, 2003 Metal Products and Machinery 40 CFR 438 (proposed) Iron and Steel Manufacturing 40 CFR 420 (proposed amendments)

ACRONYMS FOR EFFLUENT GUIDELINES Direct discharge, needing NPDES permit Best Practicable Control Technology Currently Available (BPT) Best Available Technology Economically Achievable (BAT) Best Conventional Pollutant Control Technology (BCT) New Source Performance Standards (NSPS)

ACRONYMS FOR EFFLUENT GUIDELINES Indirect dischargers to POTW’s Pretreatment Standards for Existing Sources (PSES) Pretreatment Standards for New Sources (PSNS)

STORMWATER Many industries need a NPDES permit whether discharging to a storm water system or directly to a receiving stream. Davenport’s POTW was not designed to handle the diversion of stormwater from storm sewers to avoid an industry’s stormwater permitting requirements. Pollutants in stormwater are receiving additional attention. Information about your stormwater program will be requested.

GOALS Compliance with Federal and State regs Assistance to industries Sewer Rate Study Adequately support the Sewer Fund Fairly allocate expenses Pollution Prevention Support Federal and State initiatives Delays need for costly POTW expansions Manual describing our Pretreatment Program

QUESTIONS?