NCG030629_Char-Meck Letter to Wire-Bond_20130716

kwz��Charlotfe-Mecklenburg
STORM
WATER
Services —
July 16, 2013
Ted Erickson, Plant Manager
Wire -Bond
400 Rountree Road
Charlotte, NC 28224
Subject: Storm Water Monitoring Follow-up
Wire -Bond
Storm Water Permit COC NCG030629
Dear Mr. Erickson:
700 North Tryon Street
Charlotte, NC 28202
Fax:[phone]
Storm Water monitoring results for your facility were sent to you on October 15, 2013.
Due to elevated results for certain pollutant parameters, additional grab sampling was conducted at Outfall
01 on June 13, 2013 by Andrew Martin of Charlotte -Mecklenburg Storm Water Services. The results of
that sampling event are enclosed.
The results indicate that the storm water discharged on June 13, 2013 contained elevated concentrations of
total suspended solids (260 mg/L), copper (57 µg/L), zinc (86000 µg/L), lead (930 µg/L), and a turbidity
reading of 260 NTU. When results were compared to the analytical monitoring requirements of
NPDES General Permit NCG030000, violations of benchmark values for zinc (67 µg/L), copper (7
µg/L), lead (30 µg/L), and total suspended solids (100 mg/L) were detected. Wire -Bond was issued a
NPDES Storm Water permit Certificate of Coverage (NCG030629) on November 1, 2012
In order to reduce pollutant concentrations of elevated parameters, you are requested to perform a detailed
investigation into pollution sources at your facility that may be contributing to elevated discharges. Once
pollution sources are identified, corrective actions to eliminate or minimize polluted runoff from those
sources should be implemented. All investigations and corrective actions should be documented as well.
I will be in contact soon to schedule a follow-up inspection. The purpose of the inspection will be to
review efforts taken to investigate and eliminate pollution sources contributing to elevated pollutant
concentrations at your facility.
Should you have any questions concerning the sampling results, the corrective action process, or the
follow-up inspection, please contact me at 980-721-2094.
Sincerely,
C 1��
Andrew Martin, QEP
Environmental Specialist
Charlotte -Mecklenburg Storm Water Services
Enclosure
cc: Craig Miller, City of Charlotte
Chris Markowski, CM Environmental Services Inc.
Marcia Alloco, NCDWQ-MRO
obTo report pollution or drainage problems call: 311�'
(HABLOTTF_ http://stormwater.charmeck.org

Summary of Storm Water Analytical Results
Facility: Wire -Bond
Sample Date: June 13, 2013
Rain Event Total: 0.27 Inches
MCWQP Action
Benchmark Values
Level / NCDWQ
for NPDES
Parameter
Outfall 001
State Standard
General SW Permit
(Instream)
NCG030000
NAD83
E: -80' 53' 6.72"
Coordinates
N: +35' 10' 11.49"
NA
NA
Temperature (°C)
27.59
>32
NA
Dissolved Oxygen
7.51
<5.0
>5.0
(mg/L)
Conductivity
152
>550
NA
(µS/cm)
pH
6.56
Within range of
Within range of
6.0 — 9.0
6.0 — 9.0
Turbidity (NTU)
160
>50.0
NA
Copper (µg/L)
57*
7.0
7.0
Zinc (µg/L)
86000*
50.0
67
Chromium(µg/L)
36
50.0
NA
Lead (µg/L)
930*
25.0
30.0
TSS (mg/L)
260*
NA
100
Bold font indicates level exceeds MCWQP Action Level or NCDWQ State Standard (Instream).
*Indicates violations of benchmark values for NPDES General Permit NCG030000
mg/L = milligrams per liter ug/L = micrograms/liter