NC0031046_Biodisel Offload & Blending Overall Site Plan_20170310

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Colonial Pipeline Company
Darren J.Pruitt Office: [phone]
Operations Manager Fax:[phone]
Southeast/Northeast Districts e-mail:[e-mail]
March 27,2017
Mr.Derek Denard c 1n'
North Carolina Department of Environmental Quality/ Division of Water ResourcesDE�E',I�KIDEQIDWR
Water Quality Permitting Section-NPDES IE V 1VU1JG�u
1617 Mail Service Center MAR 2 9 2017
Raleigh,North Carolina 27699-1617
Subject: NPDES PERMIT NC0031046 p'e((Yll'kt1li8tflgSeCtldn
COLONIAL PIPELINE COMPANY,GREENSBORO JUNCTION
Dear Mr. Denard:
In accordance with the requirements of North Carolina General Statute 143-215.1, the
Memorandum of Agreement between North Carolina and the U.S. Environmental Protection
Agency dated October 15, 2007, the Department of Environmental Quality's Division of Water
Quality regulations, and Condition A. (8) of the above referenced National Pollutant Discharge
Elimination System (NPDES) permit, Colonial Pipeline Company's (Colonial's) Greensboro
Facility located in Greensboro, North Carolina, is providing written notification of
modifications no later than 30 days following startup or completion of modifications,whichever
is earlier. Colonial plans to lease a small portion of the site to a biodiesel transporter (Texon LP)
for the installation of an independently-owned truck unloading station. The biodiesel truck
unloading station will consist of two (2) truck unloading racks covered by a canopy, with a
secondary containment sump located below the unloading area to capture any leaks or spills.
The secondary containment sump will not have a discharge outlet, so the canopy has been
designed to minimize rainwater that could enter the containment sump, as any storm water or
spilled biodiesel captured in the sump will have to be removed by a vacuum truck for disposal.
Biodiesel will be unloaded from trucks and stored in Colonial's existing Tank 878 (which has
contained fuel oil no. 2 or jet kerosene in the past). New electric heaters and pumps will
facilitate movement of biodiesel to a new metering skid, where biodiesel will be injected into
any of three existing Colonial pipelines to produce a blended biodiesel product.
The addition of the biodiesel unloading,storage, and injection equipment will not result in any
new wastewater discharges,new outfalls or changes to existing outfalls, and will not change the
size, capacity, process, physical location, or other parameters of the existing wastewater
treatment or disposal systems or their unit components.
The attached drawing shows the location of the biodiesel truck unloading area, piping to
existing Tank 878, and the metering skid and injection points. Biodiesel has physical properties
similar to those of petroleum diesel, but because it is made from vegetable oils, animal fats, or
recycled restaurant greases, it is a cleaner-burning alternative. The sampling requirements
411 Gallimore Dairy Road, Greensboro, North Carolina 27409
P.O. Box 760 Greensboro, North Carolina 27409

Mr. Derek Denard
Colonial Pipeline — Greensboro Junction
March 27, 2017
Page 2
should be the same, since the presence of biodiesel in wastewater discharges (if any) will be
detected through Oil & Grease analyses.
If you need have any questions or need additional information, please contact me at (336) 931-
6025 or Judy L. Hoff, PhD, PE, CHMM of ERM NC, Inc. at [phone].
Sincerely,
Amt'-' , ?4-zu
Darren J. Pruitt
Operations Manager
Cc w/attach: NC DEQ Winston-Salem Regional Office
DWR / Water Quality Regional Operations Section
450 Hanes Mill Road, Suite 300
Winston-Salem, NC 27105
Attachment
Kelly Harris, Colonial Pipeline Company
Judy Hoff, ERM NC, Inc.
Colonial Pipeline Company

Attachment
Greensboro Junction Biodiesel Offload & Blending Overall Site Plan