NCG090033_Valspar Summary of Results Form_20230522

Charlotte -Mecklenburg
STORM
WATER
Services
StormWater.CharMeck.org
Summary of Stormwater Monitoring and Analysis
Facility: Valspar (NCG090033)
Sample Date: 4/26/2023
Rain Event Total: 0.24 inches (CRN-58 : Mallard Elementary)
Industrial
Stormwater Permit
NC Water
Discharge
CMSWS
Quality
Parameter
Units
Outfall 001
Benchmarks/Limits
Action Level
Standard
(NCGxx0000
(In -stream)
(In -stream)
benchmarks/limits in
bold)
Temperature
(°C)
16.8
32
-
Dissolved
(mg/L)
9.09
-
4.0
Oxygen
Conductivity
(umho/cm)
73.8
550
-
pH
7.07
6.0 — 9.0
-
6.0 to 9.0
Fecal Coliform
100mL
NA
1000
3000
200
E-Coli Bacteria
1 mpn/
NA
-
-
-
Total Suspended
(mg/L)
39.7
100
-
-
Solids
Turbidity
(NTU)
55
-
-
50.0
Copper*
(mg/L)
0.0074
0.010
-
0.0036
Zinc*
(mg/L)
0.048
0.126
-
0.036
Chromium
(mg/L)
<0.005
0.905
-
0.016
Lead*
(mg/L)
<0.005
0.075
-
0.014
Oil and Grease,
(mg/1)
<0.005
15
-
-
and TPH
BOD
(mg/L)
8.7
-
6.0
-
COD
(mg/L)
48
120
-
-
Yellow indicates exceedance of Permit Benchmark Value or a CMSWS Action Level. NC Water Quality
In Stream Standards are also shown as a reference.
*Monitoring data collected during this event is based on total recoverable metals.
The values for the Industrial Stormwater Permits Discharge Benchmarks and CMSWS Action Levels are
also based on total recoverable metals. The NC Water Quality Standard for in -stream is based on dissolved
metals with an assumed in -stream hardness value of 25 mg/L.
•
o% To report pollution or drainage problems, call: 311
http://stormwater.charmeck.org
CHAI OT rF_ a.