Estimated Truck Traffic Based on Conceptual Design for Elizabeth Mine Stabilization Work

NOTES: 1. There is no design yet for the buttress, therefore all estimates are conceptual and may be +/- 30% or more.

2. Larger, tractor trailer-type dumps could be used to reduce the number of truck trips by roughly 30-50%. This might require finding a route from Norwich other than Rte 132 to Mine Road, due to the sharp turn in South Strafford Village.

3. In addition, if an onsite source of stone for crushing operations is identified, it may be across Mine Road from TP1 and 2. In that case, we would look to use off-road, articulating dump trucks to transfer material from beyond TP3 (possibly TP4 or near the South Open Cut) to TP1. These vehicles would likely need to travel  mile (+\-) on Mine Road to make this a viable option for onsite stone. If we can: 1) locate an acceptable onsite stone source; 2) cost effectively mobilize a crusher to get the necessary stone size; 3) cost effectively move the material from its source to TP1; and 4) use Mine Road as part of this transportation route, we may be able to eliminate all truck traffic associated with importing crushed stone.

4. At this time, it seems unlikely that sand will be available onsite due to the geologic setting of the Elizabeth Mine and the lack of significant sand deposits in the immediate area.

DIVERSION PIPE ˆ (September thru October 2003):

* Sand (from West Lebanon, via Norwich ˆ Rte 5 to Rte 132 to Mine Rd) 900 cubic yards (about 1,700 tons) ˆ roughly 170 10-wheel dump truck loads, about 30 loads per day * Crushed Stone (from Norwich via Rte 132 to Mine Rd ˆ unless produced onsite with a crushing plant) 450 cubic yards (about 900 tons) ˆ roughly 90 10-wheel dump truck loads, about 30 loads per day * Concrete (from West Lebanon, via Norwich ˆ Rte 5 to Rte 132 to Mine Rd) 100 cubic yards ˆ roughly 12 concrete truck loads over one day * Hydromulch (from ???, assume Connecticut River Valley, via Norwich ˆ Rte 5 to Rte 132 to Mine Rd) Assume 5 trucks per acre. 1.5 acres will be disturbed, 7 trucks over one day * Pipe, Equipment, Misc Supplies (likely from Sharon via Rte 132 to Mine Rd) 20-30 trucks total, mostly low-boy tractor trailer rigs or stake-body type trucks * Daily Visitor and Site Personnel Traffic (likely from Sharon via Rte 132 to Mine Rd) 10-20 vehicles (pickup, van, sedans) daily. Arrive onsite by 7:00 am, depart from site around 5:00 pm, with trips for lunch, local supplies, etc.

BUTTRESS ˆ (hauling of sand starting in November 2003, most significant work in summer 2004):

NOTE: This truck count assumes that NO general fill for the buttress will be imported from offsite. The estimated volume for this material is 48,400 cubic yards (97,000 tons). This would amount to an additional 10,000 truck loads.

* Sand (from West Lebanon, via Norwich ˆ Rte 5 to Rte 132 to Mine Rd) 15,000 cubic yards (about 29,700 tons) ˆ roughly 3,000 10-wheel dump truck loads, possibly 30-40 loads per day over 3-4 months of hauling to build an onsite supply * Crushed Stone (from Norwich via Rte 132 to Mine Rd ˆ unless produced onsite with a crushing plant) ˆ estimated misc. volume for swales, check dams, roads, pipe bedding, etc 1,500 cubic yards (about 3,000 tons) ˆ roughly 300 10-wheel dump truck loads, not likely more than 20 trucks per day spread over the construction season * Topsoil (from ???, assume Connecticut River Valley, via Norwich ˆ Rte 5 to Rte 132 to Mine Rd) 10,000 cubic yards (about 20,000 tons) ˆ roughly 2,000 10-wheel dump truck loads, unless manufactured onsite with borrow material and an organic amendment, then, only organic material is trucked in at roughly 15% by volume, or 300 10-wheel dump truck loads. Likely about 30 loads per day to build an onsite supply. * Hydromulch (from ???, assume Connecticut River Valley, via Norwich ˆ Rte 5 to Rte 132 to Mine Rd) Assume 5 trucks per acre. 7 acres will be disturbed, 35 trucks over several days. * Horizontal drains, borings (likely from Sharon via Rte 132 to Mine Rd)5 trucks, 2 drill rigs and 3 support trucks (twin axle stake-body type). Support trucks will make daily trips over 2-3 weeks of drilling operations. * Pipe, Equipment, Misc Supplies (likely from Sharon via Rte 132 to Mine Rd)100-200 trucks total, mostly low-boy tractor trailer rigs and stake body type trucks, spread out over the entire 18-month construction window. No more than 5-10 trucks in any given day for deliveries, etc. * Daily Visitor and Site Personnel Traffic (likely from Sharon via Rte 132 to Mine Rd)10-20 vehicles (pickup, van, sedans) daily. Arrive onsite by 7:00 am, depart from site around 5:00 pm, with trips for lunch, local supplies, etc.

E-mail from Scott Acone USACE re finding local material sources:

I understand the community's concerns and we appreciate the good intentions of those trying to help us identify sources of materials or contractors to help perform work. At the same time, I hope you recognize that there is process that must be followed for this type of cleanup. There are federal and state regulations that must be considered as well as negotiations with property owners. We (EPA, USACE, and our contractors) are working as diligently as we can in an effort to respond to the community's concerns and comments. Having performed several significant cleanup actions in small communities, ensuring safety and minimal community impact is our top priority during implementation of the work.

EPA is continuing to work with property owners of the mine. EPA is making every effort to ensure locally situated material is available and utilized to the fullest extent to minimize the impacts of increased truck traffic in the community.

Simultaneously, we (USACE and URS) continue to investigate potential locations on or about the Elizabeth Mine Site to find suitable materials (sand, common fill, stone, etc) for upcoming stabilization efforts at the mine. This work can not proceed too far until the specifics of the design are finalized.

Once several potential sources have been identified, the remediation contractor (in this case Conti Environmental) will be the party that obtains the needed material.

At that time, USACE and Conti will identify desirable options to EPA for different material types. EPA will continue their discussions with owners about acquiring any necessary material...we're not there yet, but, hope to be there soon.

If Dick Josler, or any other property owners adjacent to the mine, believe they might have materials that could help us reduce truck traffice, they should call Ed Hathaway or Bill Lovely to discuss it with them.

USACE and our contractors are not in a position to make offers to anyone for material at this time.

Please call Ed or me if you still have questions.

Thanks.

Scott

Scott Acone, P.E.
U.S. Army Corps of Engineers, New England
696 Virginia Road, Concord, MA 01742-2751
ph (978)318-8162 fax (978)318-8064