Did you know that 2,200 feet under Cayuga Lake, Cargill Deicing Technology mines
road salt? Or that every day, brine-contaminated water flows into Cayuga Lake from the Portland Point area, along with phosphorous from nearby farms?

Cayuga Lake may look pristine, but it’s threatened by industry and already showing
signs of distress.

CLEAN, Cayuga Lake Environmental Action Now, is a group of
Finger Lakes residents who want a clean lake and are willing to educate others
about how to protect it. We’re affiliated with the Cayuga Lake Watershed Network.

We also want to hold the NYS Department of Environmental Conservation
responsible for protecting a resource that belongs to ALL of us: Cayuga Lake—from
the waves up above to the salt down below.

Our motto is: Clean the Lake. Protect the Lake.

Want to know more and stay in the loop? Join our mailing list or Email CLEAN at CayugaLakeEANow@gmail.com

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New Figure July 2017! Thinning Carbonate Beam
Carbonate Beam Thickness over Cayuga Salt Mine

Cargill Mine Extent and Plans - Click for larger image

In 2016, Cargill, Inc. announced plans to drill a new shaft, Shaft #4, on the Cayuga Lake shoreline north of their present salt mine operations in Lansing. See the figure above for proposed Shaft location. DEC granted a negative declaration for Cargill's activities, although independent scientific review clearly shows this was a mistake. CLEAN is working to show the DEC and all citizens that the Environmental Impact Statement (EIS, or DEIS, if in draft) should be required prior to the approval of the Shaft #4 permit. Numerous documents submitted to the DEC have laid out the technical concerns regarding Cargill's Shaft #4 (details below).

Cayuga Lake is the source of drinking water, the centerpiece of our eco- and agro- tourism industries, and an overall economic driver for our region.  At the very least, we believe that the DEC should require Cargill to provide a DEIS before it is allowed to endanger our Lake by expanding its operations beneath Cayuga’s waters.

To date (May 17, 2017), the DEC has not granted the permit to Cargill for the Shaft #4 Project. There is still time to plead our case to the DEC.

Want to help? Email us at CayugaLakeEANow@gmail.com

 

Key Technical Issues with the Cargill Shaft #4 Project

1. Leakage water – Amounts:

Independent geologists have reviewed available documents relating to the mine and permit for Shaft #4 and are alarmed. There is a demonstrated risk of flooding Shaft #4 and the mine during drilling due to a hydraulic connection between an aquifer that would be drilled through and the Lake.

2. Leakage Water – Storage:

Cargill’s current plan is to store in the mine under the lake leakage waters collected both during the drilling Shaft #4 and once the shaft is in operation.  However, in 2015, a Cargill consultant expressed concern that leakage waters from Cargill’s existing shafts are causing pillar erosion under the Town of Lansing, and that this poses a risk of mine collapse which could damage the existing shafts and the lake shoreline. We would add that any hydraulic connection between the lake and the mine poses the risk of salinizing lake water.  Therefore, Cargill should not be allowed to store any additional water or brine in the mine.

3.     Gas Handling:

The drilling of Shaft #4 will intersect several rock formations which commonly host natural gas in New York State. Cargill’s proposal of pulling the gases into the mine to then be vented to the atmosphere with mine exhaust is unacceptable. This complete lack of transparency regarding likely  impacts to the climate, is intolerable and alone necessitates a positive declaration under SEQR for the Shaft #4 application.

4.     Breach of DEC SEQR Process (State Environmental Quality Review):

The drilling of Shaft # 4 and northward mining expansion are indisputably linked. Cargill has segmented these two pieces of the same project in breach of SEQR protocol. This breach should be reason enough to require a DEIS and public hearing. In such a hearing the DEC should correct Cargill’s improper application process by recombining Cargill’s improperly segmented permit application so that matters having to do with the mining of the tunnel as well as the mineshaft can be properly considered.

5.     Depletion of Bedrock Groundwater Resources:

Groundwater leakage into Shaft #4 is likely to significantly aggravate the already widespread drainage and depletion of bedrock groundwater caused by inflows to the existing shafts over many decades of their operations. A measurement taken in Corehole 18 at the Shaft #4 location four miles  miles from the existing shafts indicates that a potentiometric water level (the level to which water rises in a well) at the base of the Onondaga Formation has already been lowered by more than 100 ft. Cargill has failed to evaluate the existing and additional impacts from Shaft #4 on the bedrock groundwater resources in the region. No monitoring of such impacts has been proposed.