Permit_ULGWR-2023-27.pdf

This is a Wastewater Discharge Permit for Groundwater Remediation issued by the Urbana & Champaign Sanitary District to the City of Urbana Department of Public Works. The permit (ULGWR-2023-27) authorizes the discharge of wastewater from the Urbana Landfill Leachate Treatment Facility located at 1210 East University Avenue to the sanitary district's system. The permit is effective from August 8, 2023, through August 7, 2027, covering groundwater remediation operations at a solid waste landfill facility where leachate containing gasoline range organics was previously air stripped but the air stripper blower has been non-operational since November 2015.

The permit establishes specific discharge limitations for 22 different pollutants including heavy metals, volatile organic compounds, and conventional parameters, with monthly averages, daily maximums, and grab sample limits clearly defined. Flow restrictions limit discharge to 5,200 gallons per day as a daily average or 16,000 gallons per day as a maximum. The permit requires quarterly monitoring for benzene, ethylbenzene, toluene, and xylene, along with monthly flow monitoring and comprehensive reporting requirements. Special conditions mandate operation of a four-tray air stripper pretreatment facility under certified supervision, with specific technical requirements for equipment operation and monitoring protocols to ensure compliance with local sewer use ordinances.