PA Environment Digest Blog

On September 23, 2026, the Department of Environmental Protection did a follow-up inspection of the Seneca Resources Taft 851 shale gas well pad in Middlebury Township, Tioga County to determine the status of contaminated water cleanup from a 2024 and continuing incidents.

DEP found operations were under way to pump fluids down a Taft shale gas well while a well at the nearby Chappell shale gas well pad was being fracked to reduce communication between the wells.

Forty-eight frac tanks were staged in secondary containment for use during the operation.

Field tests confirmed contaminated fluid in the sediment basin and at the central stormwater sump continued to be present as a result of operations at the well pad.

"The DEP recommends that Seneca continues to monitor the conditions on the pad surface and the sediment basin and remove elevated conductance fluids and soils as discovered. Prevent elevated conductance fluids from leaving the facility and causing pollution to the waters of the Commonwealth."

Violations at the well pad were continued now for 700 days.

DEP did not request a write follow-up from Seneca.

Click Here for DEP inspection report + photos.

Original Incident

Violations for the wastewater releases at the Taft site were originally issued on October 23, 2024.

DEP found similar conditions-- spills, crews trying to clean up the pad while drilling and fracking new shale gas wells continues-- starting October 23, 2024, then on July 11, 2025, August 21, 2025, October 2, 2025, October 31, 2025, December 23, 2025, January 21, 2026, April 21, 2026, June 23, 2026 and July 17, 2026.

Casing/Cementing Failure

A July 27, 2026 inspection of the 75HU Utica shale gas well at this same Taft shale gas well pad found evidence of continuing casing/cementing failure originally discovered on Nov. 13, 2024.

The violation was continued and so will the monitoring.

DEP inspection report.

Criminal Charges

On October 31, 2025, Attorney General Dave Sunday announced criminal charges against Seneca Resources, LLC, following multiple violations of Pennsylvania’s environmental protection laws in several counties, as recommended by the 48th and 51st Statewide Investigating Grand Juries.

Three separate criminal complaints were filed regarding the natural gas company’s violations related to improper waste management practices and policies.

Prominent in the Attorney General’s announcement of the charges was the fact that DEP repeatedly warned Seneca that their practices were not in line with Pennsylvania law, but those warnings were ignored or disputed. Read more here.

In all, Seneca is charged with 64 counts of violations of the Solid Waste Management Act and 36 counts of violations of the Clean Streams Law in Cameron, Clearfield, Elk, Jefferson, Lycoming, McKean, Potter, Tioga Counties. Read more here.

Report Violations

To report oil and gas violations or any environmental emergency or complaint, visit DEP’s Environmental Complaint webpage.

Text photos and the location of abandoned wells to 717-788-8990.

Check These Resources

Visit DEP’s Compliance Reporting Database and Inspection Reports Viewer webpages to search their compliance records by date and owner.

Sign up for DEP’s eNOTICE service which sends you information on oil and gas and other permits submitted to DEP for review in your community.

Use DEP’s Oil and Gas Mapping Tool to find if there are oil and gas wells near or on your property and to find wells using latitude and longitude on well inspection reports.

(Photos: Stormwater sump at the pad; Sediment basin with contaminated water.)

[Note: If you believe your company was listed in error, contact DEP’s Oil and Gas Program.]

[Note: These may not be all the NOVs issued to oil and gas companies during this time period. Additional inspection reports may be added to DEP’s Oil and Gas Compliance Database.]

Resource Links - Seneca Resources:

-- Attorney General Sunday: Criminal Charges Filed Against Seneca Resources For 64 Counts Of Illegal Dumping Of Shale Gas Waste In Cameron, Clearfield, Elk, Jefferson, Lycoming, McKean, Potter, Tioga Counties [PaEN]

-- No One Warned A Cameron County Family Their Water Well Was Contaminated By A Seneca Resources Shale Gas Wastewater Pipeline Rupture [PaEN]

-- DEP - Day 700: Seneca Resources Continues To Manage Contaminated Water From Taft Shale Gas Well Pad In Tioga County [PaEN]

-- DEP - Day 632: Seneca Resources Installs Trench, Concrete Catch Basin To Collect Continuing Releases Of Contaminated Water From The Taft Shale Gas Well Pad In Middlebury Twp., Tioga County [PaEN]

-- DEP: Day 609 - Sample Results Confirm Continued Wastewater Releases At Seneca Resources Taft Shale Gas Well Pad In Middlebury Twp., Tioga County [PaEN]

-- DEP: Day 587 And Counting: Seneca Resources Continues To Release Wastewater, Frack New Shale Gas Wells At Taft Well Pad In Middlebury Twp., Tioga County [PaEN]

-- DEP: Day 545 And Counting: Seneca Resources Continues To Release Wastewater, Frack New Shale Gas Wells At Taft Well Pad In Middlebury Twp., Tioga County [PaEN]

-- DEP: Seneca Resources Still Experiencing Spills, Releases While New Well Development Continues At Taft Shale Gas Well Pad In Middlebury Twp., Tioga County For 426 Days And Counting [PaEN]

-- DEP: Spills, Releases Continue At Seneca Resources Taft Shale Gas Well Pad In Middlebury Twp., Tioga County For 373 Days And Counting [PaEN]

-- DEP Day 239: Seneca Resources Wastewater Cleanup, Monitoring Efforts Continue At Vandergrift Shale Gas Well Pad In Charleston Twp., Tioga County [PaEN]

-- DEP: Day 155 - Contaminated Water Still Flowing From Seneca Resources Vandergrift Shale Gas Wells, Well Pad; Cleanup Continues In Charleston Twp., Tioga County [PaEN]