Dupont_CapeFearPlant_SWMP1997

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DuPont Cape Fear Plant
P.O. Box 2042
Wilmington, North Carolina 28402
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DLIPont Cape Fear Plant
JUNE 30,1997
MR. JOHN CROWDER, III, R.S.
NC. DEPT OF ENVIRONMENT,HEALTH AND
NATURAL RESOURCES =_
127 CARDINAL DRIVE EXTENSION
WILMINGTON, N.C.28405
TEN YEAR SOLID WASTE MANAGEMENT PLAN FOR THE
DUPONT CAPE FEAR SITE
Dear Mr. Crowder,
Enclosed is a copy of our Ten Year Solid Waste Management Plan for the Dupont Cape Fear
site as required by the North Carolina Solid Waste Management Act of 1989 as amended by
House Bill 859 in 1996. This plan was prepared in accordance with House Bill 859 and is being
submitted by the Cape Fear Site.
Should you have any questions please contact Penny Mahoney, Responsible Care
Leader, on [phone] or John White, Site Waste Specialist, on [phone].
Sincerely,
Penny Ilho" ney� --�
Responsible Care Leader
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TEN • SOLID WASTE
MANAGEMENT PLAN FOR THE
DUPONT CAPE FEAR SITE
JUNE 30, 1997
'are Leader
Technician
REV, 0

Introduction
The Dupont Company is committed to the reduction of waste and emissions. We have
an ultimate goal of zero waste and emissions. At the Cape Fear site we have fully
supported this effort. We recover for reuse 77 MM lbs.of Ethylene Glycol per year from
our glycol.refming facility. We also have a methanol recovery unit and several other units
that are used for recovery. We send metal -bearing secondary materials off -site to metal
reclaimers. We have reduced process sample frequencies and switched to on-line
measurements in order to reduce waste samples. We have reduced Sara 313 emissions
by 66% since 1987 and are continuing to reduce these emission. We have an active site
recycling program and recycled 3 tons in 1996 with 10 tons projected in 1997. We also
operate a Petretec* facility which converts used film back to its major raw materials which
are DMT and Ethylene Glycol.
This solid waste minimization plan was prepared as required by Section 16, Paragraph
130A-309.09D of the North Carolina Solid Waste Management Act of 1989 as amended
by House Bill 859 in 1996.
At Cape Fear we have three industrial landfills on -site. Our coal ash landfill was closed
this year per state regulations. Our demolition landfill will close in 1998. Therefore, this
waste minimization plan will not address the demolition landfill.
Our plans are to continue to operate our TPA Landfill # 2. This landfill is currently
permitted to accept wastewater treatment plant sludge, crude terephalate, dimethyl
terephthalate, coal ash, incinerator ash, and Dacron* polymer. We plan to request permission
from the state to add the following wastes to our permit for the TPA landfill: asbestos,
sandblast residue, water treatment filter media, and spent water softener and demineralizer
ion exchange resins.
The basis for this waste minimization plan is to reduce the landfilling of waste listed above
by a total of 25 % from the 1996 volume of 25 M tons. This includes waste landfilled
both on and off site.
The annual amount of two of the wastes landfilled, asbestos and construction/demolition
debris, are a function of the amount of construction and renovation activity at the site and
are not necessarily directly related to production rates. Waste asbestos generation is part
of our program to eliminate all asbestos materials from potential worker exposure.
Therefore, we did not consider this stream when setting a waste reduction goal. Likewise,
the generation of construction/demolition debris is not amenable to waste reduction beyond
our current practices. When we site expansions or other constriction activity we attempt to
use existing structures and equipment when feasible.

Waste Reduction Goal
It is the Cape Fear site's goal to reduce the amount of nonhazardous industrial waste
disposed of by landfilling by a minimum of 25% by weight by July 1, 2007, using
1996 as the base year.
Waste Reduction Strategy
The Cape Fear site's strategy for achieving our goal involves two primary methods :
1) source reduction in order to reduce the amount of waste generated, and 2) the recycling
or reuse of wastes in a beneficial manner.
Waste Management/Reduction Options
Coal Ash
The potential options of switching to either oil or gas as fuel or retrofitting the boilers to
improve combustion efficiency are not cost-effective. We have been working with vendors
to investigate reuse of coal ash in various end uses such as structural fill.
Wastewater "Treatment Plant Sludge/Dredgings
The amount of biosolids produced is generally a function of production volume at the site.
Most of the biosolids generated are landfarmed and are not included in this plan. However,
part of the volume is generated by dredging of the concrete basins on a periodic basis.
We will investigate methods to reduce the amount of solids sent to the basins by reducing
their generation or recycling them back to the process.