NC0074241_Compliance Evaluation Inspection_20150922

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NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
September 22, 2015
Mr. Dave Thomson
Associated Asphalt Greensboro, LLC
P.O. Box 12626
Roanoke, VA 24027
SUBJECT: Compliance Evaluation Inspection
Associated Asphalt - Greensboro, NC
NPDES Permit No. NCO074241
Guilford County
Dear Mr. Thomson:
Donald van der Vaart
Secretary
On September 18, 2015, Mike Mickey of this office met with Bruce Weaver to perform a
Compliance Evaluation Inspection on the stormwater discharge from the Associated Asphalt
terminal located at 100 S. Chimney Rock Road. The inspection findings are detailed below and an
inspection checklist is attached.
I. Permit
The permit expires next on August 31, 2016. You should receive a renewal notice around the first
of the year.
II. Self -Monitoring Program
Submittal of the electronic Discharge Monitoring Reports (eDMRs) began in January 2015. A
review of the monthly DMR's for the period September 2014 through August 2015 found
Associated Asphalt to be compliant with the effluent limits for the above period. In regards to the
permit monitoring requirements, it was noted that all sampling was performed per the frequencies
specified in the permit.
III. Flow Measurement
The permit requires episodic flow monitoring. The discharge volume from the retention pond is
calculated by opening the locked release valve four turns and then timing the release (-600 gpm). It
was noted that no discharge occurred during the review months of September, January, February,
April June and July.
IV. Facility Site Review
The stormwater treatment system consists of a 1.0 MG retention pond with a locked effluent release
valve. The retention pond receives condensate from the boilers, stormwater from the truck and rail
car loading areas and stormwater from the diked secondary containment areas which surround the
ASTs:
450 West Hanes Mill Road, Suite 300, Winston-Salem, NC 27105
Phone: [phone] \ Internet: www.ncwaterauality.org
An. Equal Opportunity \ Affirmative Action Employer —Made in part by recycled paper

Mr. Dave Thomson
Page 2
September 22, 2015
VIL Records/Reports
A review of the on -site files at the facility showed that the records were being maintained according
to the permit. Meritech performs all laboratory analyses except for pH, which is measured by
Associated Asphalt staff.
VIII. Effluent/Receiving Waters
The system discharges into a ditch at the perimeter fence. The effluent eventually reaches a
tributary of the East Fork Deep River, class "WS-IV*" waters of the Cape Fear River Basin. No
effluent was being discharged on the day of the inspection.
Your efforts to comply with the permit are appreciated. Should you have any questions
concerning this report, please contact Mike Mickey or me at [phone].
Sincerely,
vaV, 4
Sherri V. Knight, PE
Assistant Regional Supervisor
Water Quality Regional Operations Section
Division of Water Resources
cc: Brace Weaver.([e-mail])
Central Files
WSRO

Permit: NCO074241 Owner -Facility: AA Greensboro terminal
Inspection Date: 09/18/2015 Inspection Type: compliance Evaluation
Permit
Yes No NA NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new
❑
❑
0
❑
application?
Is the facility as described in the permit?
0
❑
❑
❑
# Are there any special conditions for the permit?
❑
0
❑
❑
Is access to the plant site restricted to the general public?
0
❑
❑
❑
Is the inspector granted access to all areas for inspection?
0
❑
❑
❑
Comment: The Associated Asphalt stormwater treatment system was found to be compliant with the
NPDES permit limits for the review period September 2014 through August 2015.
The 1 MG stormwater retention pond receives the following:
*truck and railcar loading complex stormwater.
*boiler condensate discharge.
*stormwater from the secondary containment dikes that surround the ASTs.
Flow Measurement - Effluent
Yes No NA NE
# Is flow meter used for reporting?
❑ 0
❑
❑
Is flow meter calibrated annually?
❑ ❑
M
❑
Is the flow meter operational?
❑ ❑
0
❑
(If units are separated) Does the chart recorder match the flow meter?
❑ ❑
0
❑
Comment: Effluent flow from the single retention pond is calculated by
opening a locked release valve
four turns and then timing the release (- 600 gom). A log
is kept that records the release
date, flow duration and computed discharge volume.
There were fourteen discharge events in the review period. No discharge occurred in the
months of September, January, February, April, June and July.
Effluent Pipe
Yes No NA NE
Is right of way to the outfall properly maintained?
0
❑
❑
❑
Are the receiving water free of foam other than trace amounts and other debris?
❑
❑
0
❑
If effluent (diffuser pipes are required) are they operating properly?
❑
❑
0
❑
Comment: The system discharges into a ditch at the perimeter fence. The effluent eventually reaches
a tributary of the East Fork Deep River. class WS-IV* waters in the Cape Fear River Basin.
The system was not discharging on the day of the inspection.
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