Osceola County Commission Update August 5, 2019 Agenda Landfill - PowerPoint PPT Presentation

Osceola County Commission Update August 5, 2019

Agenda Landfill Design Coal Ash TCLP Testing Groundwater and Surface Water Monitoring Network Landfill Inspections Leachate Evaporator 2

Landfill Design • FDEP 62-701 Permitted Landfill – Subtitle D • Typical Design • 2 layers of Geomembrane with clay bottom • 2 feet sand to protect geomembrane • Leachate Collection system • Gas Collection System • Groundwater Monitoring Network • Waste Types Accepted • Class I includes typical residential and commercial business waste. 3

Coal Ash TCLP Testing 24 TCLP Tests performed by AES on samples at their facility March 1 to May 2, 2019 No Metals tested above Regulatory Level Considered Non-Hazardous Recommendation - TCLP test of hauled Coal Ash with permission by JED 4

UPDATE • Laboratory that analyzed the TCLP Samples in Puerto Rico is NELAP Certified. • JED Landfill has been taking onsite TCLP samples of the Coal Ash. Results will be provided to the County. • Negotiated to observe the sampling of the Coal Ash for TCLP. • LEAF testing of the material: FDEP advised that LEAF testing is not currently a recognized test and any data from it would not be regulatorily meaningful. 5

Groundwater and Surface Water Agenda • Monitoring Network • Site Lithology • Groundwater Flow • Potable Wells • Recommendations 6

Monitoring Network Figure From Geosytec 7 Permit Documents

Site Lithology and Monitoring Well Information Depth (ft JED A-series JED B-Series JED C-Series BLS) Lithology Wells Wells Wells 5 10 15 20 Fine Sand to Silt 25 30 35 40 45 50 55 Sandy 60 Clay 65 70 Shell Hash 75 80 85 90 95 100 105 110 Clayey Sand to Silty Sand 115 120 125 130 135 140 145 150 Hawthorn Group 155 160 165 8 170 Clay 175

Water Well Inventory and Groundwater Flow 9

Community Location 10

UPDATE Groundwater Flow Direction in the Floridan Aquifer 11

Groundwater Recommendations • Collect Split Samples during the Semi-Annual Testing if approved by JED Landfill • County Meet with FDEP 12

UPDATE • Met with JED Landfill on August 2, 2019. • We negotiated to: • Verify that they are sampling within FDEP Standard Operating Procedures • Observe their Groundwater Sampling operations at their next semiannual sampling event. 13

UPDATE • Conference Call with FDEP on Thursday, July 25, 2019 • Topics Addressed: 1. Suitability of this Facility to Receive Coal Ash • FDEP Confirmed this disposal method at this facility is appropriate and allowable by Rule and the Facility permit. 2. Safety of the Citizens • FDEP confirmed that there are no groundwater issues associated with the landfill offsite 3. Compliance Wells and Site Assessment • FDEP is working with JED Facility to implement controls for a migrating landfill gas issue. 4. Arsenic in the Compliance Well • FDEP stated that they believe the Arsenic is from a CCA treated power pole near the well not from the landfill. 14

Landfill Inspections FDEP Inspections Performed March and May 2019 Inspection Check List Created Coordinate Inspection Date with J.E.D. 15

UPDATE • Friday August 2, 2019 meeting with JED Landfill. • Negotiated for access for an inspection and inspection protocols. 16

Leachate Evaporator  Leachate evaporation is a common method used to manage leachate at large Class I landfills  Excess heat from combustion of landfill gas and onsite generators evaporates the leachate  Leachate is 99% water with small amounts of other chemicals  Approximately 90% of the leachate is evaporated and 10% remains liquid  Remaining liquid returned to the leachate storage 17

Leachate Evaporator  HAPs include metals and volatile organic compounds (VOCs) What is Hazardous  HAPs are regulated by USEPA and FDEP Air Pollutants (HAP)?  HAPs will be either:  released along with the water vapor  destroyed by the heat of evaporation  remain in the 10% unevaporated leachate  HAP emissions is directly related to the composition of the leachate  HAP emissions from leachate evaporation of typical Class I landfill leachate is expected to be small Review Request for Additional Information response Recommendation when submitted by J.E.D 18

UPDATE  FDEP received a Response to the Request for Additional Information.  FDEP is currently reviewing the response to determine if all requirements are met and their questions are addressed.  Leachate Evaporator Permit Status: Still Under Review by FDEP  Before a Permit is issued, a Notice of Permit Action and Comment Period will be published in a local newspaper. Review Request for Additional Information response when submitted by J.E.D 19

UPDATE  How to participate in regulatory policy  FDEP Rule Making Workshops  https://floridadep.gov/events  Event calendar for FDEP items.  https://floridadep.gov/waste  Home page for FDEP Division of Waste Management  EPA-Get Involved with EPA Regulations  https://www.epa.gov/laws-regulations/get-involved-epa- regulations#tabs  This web page outlines how to find and comment on proposed versions of rules listed in the Federal Register  https://www.regulations.gov/  Web portal to submit questions and comment on various Review Request for Additional Information response rules under consideration. when submitted by J.E.D 20