NCG060336_Assessment of BMP_20131216

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Prestage Farms, Inc.
December 13, 2013
NCDENR-DWR
NPDES Stormwater Permitting Unit
1612 Mail Service Center
Raleigh NC 27699-1612
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Subject: Assessment of Best Management Practices for facilities that use animal fats/byproducts
Prestage Farms Inc (421 Feed Mill)
COC Number NCG060336
Sampson County
To Whom It May Concern:
Please find enclosed the Prestage Farms assessment of BMPS associated with off
loading, handling and spill prevention of rendered fats at our location. We have
attempted to complete this task as accurate as possible. Please let us know if more
information is needed in this matter.
Sincerely,
cw'�- cq+--
Glenn Clifton
Contact Person
Technical Specialist
Prestage Farms, Inc.
cc: Fayetteville Regional Office
HIGHWAY 421 SOUTH • P. O. BOX 438 • CLINTON, N. C. 28329-0438 • PHONE [phone]

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Section E: Assessment of Best Management Practices (BMPS) for facilities that use or
process animal fats/byproducts.
Prestage Farms, Inc. 421 Feed Mill is a facility where feed is manufactured along with
grain purchasing for pork production. Support services include a warehouse, lab, garage
and maintenance department. This facility does use processed animal fats/byproducts in
the manufacture of feed.
Animal fat is delivered to the 421 Feed Mill by tanker trucks to a delivery point where
animal fat is pumped to two aboveground storage tanks with secondary containment.
This secondary containment wall also includes other tanks with liquid feed ingredients.
Potential spills could occur at the site to include the delivery point between tanker truck
connection and the receiving pipe system. Care must be taken by vendor and Prestage
Farms to insure that the connections are properly secured before transfer has begun.
Inside the boiler room a small containment wall is used to contain any spill from any
leaks or equipment failure. Absorbent material is available at site for clean up and
disposed of properly. A Contractor is called if further clean up is warranted above what
we can handle here as indicated in our stormwater permit.
We do not feel that reduced exposure can be achieved at our site due to original
construction of feed mill. All systems are covered except the aboveground storage tanks
and the delivery point. At our site there has been incidence of fat spills mostly due to
accidents from equipment failure inside the boiler room. They were contained on site
and cleaned up.
We feel that there is no indication of presence of animals/wildlife on our site that could
cause a concentration of fecal coliform. Activity and noise around the feed mill could
keep animals/wildlife from entering our site. We also have a good rat and mice
eradication program at the feed mill. Birds do come on site to eat corn and other grains
that may have spilled during the unloading process.
To further reduce the potential for a fat spill, we plan to install a fat/grease separator
system. This system will separate fat from blow down water in case there is some
fugitive material coming from our boiler room. Plans are to complete this system
installation by January 30th 2014.