NCG030629_Char-Meck Wire-Bond Stormwater Sampling Report_20121120

Rw��Charlotte -Mecklenburg
STORM
WATER
Services � R
November 20, 2012
Ralph Johnson, President
Wire -Bond
400 Rountree Road
Charlotte, NC 28224
Subject: Stormwater Monitoring
Wire -Bond
Dear Mr. Johnson:
700 North Tryon Street
Charlotte, NC 28202
Fax:[phone]
On October 15, 2012, Mr. Andrew Martin of Charlotte -Mecklenburg Storm Water
Services (CMSWS) sampled storm water runoff from the subject facility located at 400
Rountree Road, Charlotte, North Carolina. The monitoring was conducted under
authority granted by Charlotte City Code Chapter 18, Section 18-82.
At the time the storm water sample was collected, approximately 0.13 inches of rain had
fallen. Rainfall data was reported by the United States Geologic Survey (USGS) real
time station CRN-13 at the USGS Field Office. CMSWS sampled storm water runoff
from the outfall 001 adjacent to the plating facility that discharges to a neighboring
wooded area via a sump pump.
A summary table of results is attached to this report. Monitoring results were compared
to local and state stream standards (MCWQP Action Levels and North Carolina Water
Quality Standards). Since the storm water sample was not collected from the stream, the
stream standards do not necessarily apply; however, these standards can be used to
indicate the potential of polluted runoff from the facility to impact the receiving stream.
The results indicate that the storm water discharged on October 15, 2012 contained
elevated concentrations of total phosphorus 0.51 mg/L, turbidity 260 NTU, suspended
solids 590 mg/L, copper 64 µg/L, zinc 130000 µg/L, and lead 1400 µg/L. 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 Stormwater permit (NCG030629) on November 1, 2012.
In addition, the total phosphorus and turbidity concentrations exceeded the applicable
stream standards (total phosphorus — 0.51 mg/L and turbidity — 560 NTU). CMSWS
recommends maintaining a high level of good housekeeping and to evaluate the use of
best management practices to prevent or reduce the contaminants in storm water run-off
originating from your facility.
•
To report pollution or drainage problems call: 311
CHARi.OTW http://stormwater.charmeck.org 13.

Should you have any questions concerning the sampling results or any other matters,
please contact me at 980-721-2094.
Sincerely,
Andrew Martin, EPI
Environmental Specialist
Charlotte -Mecklenburg Storm Water Services
Attachment
cc: Craig Miller, City of Charlotte
Chris Markowski, CM Environmental Services Inc.
Marcia Alloco, NCDWQ-MRO
2

Summary of Storm Water Analytical Results
Facility: Wire -Bond
Sample Date: October 15, 2012
Rain Event Total: 0.13 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)
19.34
>32
NA
Dissolved Oxygen
9.07
<5.0
>5.0
(mg/L)
Conductivity
265
>550
NA
(µS/cm)
pH
6.83
Within range of
Within range of
6.0 — 9.0
6.0 — 9.0
Fecal Coliform
<100
>3000 / 400
NA
(cfu/100 mL)
E-Coli Bacteria
200
NA
NA
(m n/100 mL)
Enterococcus
Bacteria
100
NA
NA
(m n/100 mL)
Ammonia
9.4
NA
NA
Nitrogen (mg/L)
Nitrate + Nitrite
0.55
NA
NA
(mg/L)
Total Kjeldahl
11
NA
NA
Nitrogen (mg/L)
Total Phosphorus
0.51
>0.1
NA
(mg/L)
Suspended Solids
590*
NA
NA
(mg/L)
USGS Suspended
Sediment Test
473
NA
NA
(mg/L)
Turbidity (NTU)
260
>50.0
NA
Copper (µg/L)
64*
7.0
7.0
Zinc (µg/L)
130000*
50.0
67
Chromium(µg/L)
44
50.0
NA
Lead (µg/L)
1400*
25.0
30.0
Oil and Grease
<5.0
NA
NA
(mg/L)
BOD (mg/L)
9.4
NA
NA
COD (mg/L)
100
NA
NA
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 Ng/L = micrograms/liter