Big Fork Ranch

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Big Fork Ranch has 7 groundwater monitoring wells, 6 of which have been polluted above federal advisory levels based on samples collected between February 28, 2016 and December 18, 2019. Groundwater at this site contains unsafe levels of sulfate, boron, cobalt, lead, molybdenum, lithium, arsenic, radium and antimony.

Site description

Evan and Associates Construction's Big Fork Ranch is a working and recreational ranch established in 1974 in Ponca City, Oklahoma. The facility has the capacity to store 20,000 tons of fly ash during the winter months. Its surface impoundments, CCR Cell Nos. 3 & 8 are regulated by the CCR rule. You can find the industry-reported data here. For more information on the Big Fork Ranch, see EIP’s 2019 National Coal Ash Report .

Monitoring Wells Wells reporting one or more exceedances for at least one pollutant.
6 / 7
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No exceedances
One or more exeedances
No data available
Other designation
Well "halo" size corresponds to mean concentration. Please note that some wells may not be visible on the map due to overlapping locations.
Pollutants monitored and above guidelines
Tip: Click on a contaminant to view wells that have recorded exceedances. Click again to remove the filter. antimony arsenic boron cobalt lead lithium molybdenum radium sulfate
Pollutants monitored and below guidelines
barium beryllium cadmium chromium fluoride mercury selenium thallium
Pollutants not monitored
ammonia, copper, cyanide, gross alpha particle, gross beta particle, hexavalent chromium, manganese, nickel, nitrate, nitrite, silver, strontium, tritium, uranium

Facility last updated on Friday, October 21, 2022 11:39:16 AM EDT