For those sources that discharge to a POTW, an additional copy of the registration must be sent to that POTW which receives or will receive the discharge from the site. In addition to the requirements for authorization, an applicant must ensure that activities are conducted in accordance with the operating conditions, including treatment and control, effluent limits and monitoring and reporting requirements. The proposed permit includes treatment and control requirements for all permittees. Water treatment chemicals or additives containing chromium, copper, lead, zinc or tributyl tin cannot be added to the discharge, nor can sacrificial metals be used within the cooling water or heat pump system. The permit also discusses effluent limitations for discharges to surface water, POTWs and groundwater.
Surface water has effluent limitations for temperature, salinity, pH and appearance.
Additionally, there are aquatic toxicity requirements for discharges to surface water. Discharges to a POTW have effluent limits for temperature, pH and appearance, but no effluent limit for aquatic toxicity. Discharges to groundwater have effluent limits for appearance but not for temperature, copper, lead, oil, grease, zinc or aquatic toxicity. The information in this alert should not be considered legal advice. Consult your attorney before acting on anything contained herein.