Lockwood Coal Ash Landfill

Storing coal combustion by-products from Greenidge Generating Station and other plants since 1979

View of the landfill looking east toward Seneca Lake.

With gratitude and appreciation to our late colleague Mary Anne Kowalski who collected permitting
materials for the Lockwood landfill and helped guide us through the regulatory thickets.

Corporate Structure

Lockwood Hills LLC, the owner of Lockwood landfill, and Greenidge Generation LLC, the owner of Greenidge Generating Station, are both subsidiaries of Greenidge Generation Holdings Inc. For details of the corporate structure, see the Form S-1 Registration Statement filed by Greenidge Holdings with the Securities and Exchange Commission on September 20, 2021.

NYS DEC Permits and Permit Proceedings

Lockwood Ash Disposal Site
SPDES Permit NY-0107069 and Part 360 Permit 8-5736-00005/00003-0

Modified and renewed SPDES permit issued 5/18/22 effective 07/01/2022, expiration 06/30/2027.

Comment letter on draft SPDES permit and Type II SEQRA determination, submitted by Sierra Club Atlantic Chapter, Seneca Lake Guardian, the Committee to Preserve the Finger Lakes, Cayuga Lake Environmental Action Now (CLEAN), South Shore Audubon, Stop the Algonquin Pipeline Expansion, Grassroots Environmental Education, NYPAN Environmental Committee, People for a Healthy Environment, Inc. and Fossil Free Tompkins, January 7, 2022.

ENB Notice of Comment Period on Draft SPDES Permit and SEQRA December, 8, 2021. Provides notice that DEC has prepared a draft permit with modifications and has issued a Type II SEQRA determination. Comments due January 7, 2022.

Draft Permit, December 2, 2021.

Notice of 'Complete Application, November 30, 2021.

Permit Fact Sheet, November 12, 2021.

Wet Weather Sampling Results, EnSol Inc., September 9, 2021.

2021 First Quarter Environmental Monitoring Report (EMR), Daigler Engineering, June 2021.

Landfill Gas Generation Report, Daigler Engineering, June 2021.

Mercury Minimization Program 2020 Annual Report, Daigler Engineering, March 2021.

2020 Annual Groundwater Monitoring and Corrective Action Report, January 2021.

Lockwood Response to Notice of Incomplete Application, Daigler Engineering, October 9, 2020.

Part 360 Permit Renewal Facility Manual, Daigler Engineering, August 2020.

Part 360 Permit Renewal Engineering Report, Daigler Engineering, August 2020.

Part 360 Permit Renewal Construction Quality Assurance Plan, Daigler Engineering, August 2020.

Lockwood SPDES Renewal/Modification Application, Daigler Engineering, May 2020.

Lockwood SPDES Renewal/Modification Application, Proposed Outfall Modifications, Daigler Engineering, May 2020.

Notice of Incomplete Application (NOIA), March 3, 2020.

2019 Annual Report, Daigler Engineering, February 2020.

Certification Report: Settling Pond Sediment Removal and Improvements, Daigler Engineering, December 2019.

Notice of Construction Completion, Sediment Pond Sediment Removal and Improvement Work, Daigler Engineering, October 31, 2019.

Leachate Management Plan with Enhanced Minimization Elements, Daigler Engineering, October 2019.

Stormwater Pollution Prevention Plan (SWPP), Daigler Engineering, June 2019.

Investigation of Solids Scouring during Leachate Pond Discharge Events, May 31, 2019.

Mercury Minimization Program 2018 Annual Report, March 2019.

2018 Annual Report, Daigler Engineering, March 2019.

Site Development Plan and Updated Consent Order Schedule,Daigler Engineering, September 18, 2018.

DEC Comments on Leachate Management Plan, Daigler Engineering, June 2018.

Consent Order Engineering Report, Leachate Management and Pond Sediment Removal Plan, Daigler Engineering, August 2015, revised December 2018.

Part 360 Permit Renewal Application, Daigler Engineering, March 2018.

2017 Annual Report, Daigler Engineering, March 2018.

Amendment to Consent Order amending schedule for compliance, July 10, 2017.

Construction Report: Leachate Flow Metering System & Stormwater Separation Construction, Daigler Engineering, January 2017.

Amendment to Consent Order amending schedule for compliance, Februrary 24, 2016.

Notice that SPDES permit expiration date will be extended while DEC completes technical review of the permit, February 18, 2016.

Consent Order, February 19, 2015.

Notice of Commencement of Lockwood Enforcement Action, July 14, 2014.

Lay-up Plan, Daigler Engineering, May 2011.

Current SPDES Permit Issued 2005, Modified 2010
Permit ID: NY-0107069
Effective Date: 12/01/2005, Expiration Date: 11/30/2010
Modification Dates: 08/01/2009, 04/01/2010

Current Part 360 Permit Issued 2008
Permit ID: 8-5736-00005/00003-0
Effective Date: 9/5/2008, Expiration Date: 9/4/2018

Compliance with EPA CCR Requirements

Both Greenidge Generating Station, which has an onsite coal ash pond and Lockwood Coal Ash Landfill are required to comply with EPA's Coal Ash Residual (CCR) requirements.

EPA moves to crack down on dangerous coal ash storage ponds, Matthew Daly/AP, NewsNation, January 11, 2022. "The Greenidge Generation plant in Dresden, New York, was ruled ineligible for an extension."

Detailed Facility Report for Greenidge Generation LLC, EPA's Envorcement and Compliance History Online (ECHO)

Greenidge Generation LLC CCR Rule Compliance Data and Information

Detailed Facility Report for Lockwood Hills Coal Ash Disposal Site, EPA's Envorcement and Compliance History Online (ECHO)

Lockwood Hills LLC Combined Coal Residuals (CCR) Rule Compliance Data and Information

Media

State considering renewal of Lockwood Ash Disposal Landfill permit, Finger Lakes Times, December 15, 2021.

Lockwood Hills landfill to become solar farm, Dundee Chronicle-Express, July 30, 2021.

Restart of Greenidge Power Plant Hinged on DEC Downplaying Toxic Landfill, Peter Mantius, Waterfront Blog, June 12, 2018.

Torrey residents get landfill answers, Amanda Folts, Finger Lakes Times, March 12, 2009.

Coal Ash Cleanup Resources

Mapping the Coal Ash Contamination, EarthJustice, July 29, 2021.

Cleaning Up Coal Ash For Good, EarthJustice, July 2021.

Leaking and Looming, Legacy Coal Ash Ponds Spew Poisons. Is There One Near You? Lisa Evans, EarthJustice, October 1, 2020.