NCG090007_DMR_20210330

Semi-annual Stormwater Discharge Monitoring Report
for North Carolina Division of Water Quality General Permit No. NCG090000
Date submitted 3/30/2021
CERTIFICATE OF COVERAGE NO. NCG09 0 0 0 7
FACILITY NAME Sherwin Williams
COUNTY Guilford
PERSON COLLECTING SAMPLES Justin Sergent
LABORATORY Pace Analytical Services, LLC Lab Cart, # 40 and 633
Comments on sample collection or analysis:
SAMPLE COLLECTION YEAR 2021
SAMPLE PERIOD ❑■ Jan -June ❑ July -Dec
or ❑ Monthly' (month)
DISCHARGING TO CLASS ❑ORW ❑HQW []Trout ❑PNA
❑Zero -flow ❑Water Supply ❑SA
❑■ Other WS-y;NSW
CEI V ED
Part A: Stormwater Benchmarks and Monitoring Results JUL 26 2821,
PLEASE REMEMBER TO SIGN ON THE REVERSE 4
Total event rainfall 10.36 ❑ No discharge this period?2
Outfall No.
Date Sample Collected'
(mo/dd/yr)
Total Cadmium°,
ni
' Totaiorin iurif lti,
Chi'Total
Recoverable,
Lead,
mg/L
pH,
Standard Units
Total Suspended Solids°,
mg/L
Benchmarks
-
0.003 or 0.002
0.905
0.07S
6.0-9.0
100 or 50
Parameter Code
-
01027
C0034
01051
00400
C0530
1
6/22/2021
Not Detected
0.0092
0.0216
5.8
321
1 Monthly sampling (instead of semi-annual) must begin with the second consecutive benchmark exceedance for the same parameter at the same outfall.
'For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here.
'The total precipitation must be recorded using data from an on -site rain gauge. Unattended sites may be eligible for a waiver of the rain gauge requirement.
'See General Permit text, Table 1, identifying the especially sensitive receiving water classifications where the more protective benchmark applies.
Note: Results must be reported in numerical format. Do not report Below Detection Limit, BDL, <PQL, Non -detect, ND, or other similar non -numerical
format. When results are below the applicable limits, they must be reported in the format, "<XX mg/L", where XX is the numerical value of the detection
limit, reporting limit, etc. in mg/L.
Note: If you report a sample value in excess of the benchmark, you must implement Tier 1, Tier 2, or Tier 3 responses. See General Permit text.
Permit Date: 11/1/2018-05/31/2021 SWU-255, last revised 11/1/2012
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Part B: Vehicle Maintenance Area Monitoring Results: only for facilities averaging > 55 gal of new oil per month.
❑ No discharge this period?'
Outfall No.
Date Sample
Collected
(mo/dd/yr)
24-hour rainfall
amount,
Inches;
Non -polar Oil and
Grease,
ni
Total Suspended Solids'
mg/L
New Motor or
Hydraulic Oil
Usage,
gal/mo
Benchmarks
_
-
15
100 or 504
Parameter Code
-
46529
00552
C0530
NCOIL
Footnotes from Part A also apply to this Part B
Note: If you report a sample value in excess of the benchmark, you must implement Tier 1, Tier 1, or Tier 3 responses. See General Permit text.
FOR PART AND PART B MONITORING RESULTS:
• A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS. SEE PERMIT PART II SECTION B.
2 EXCEEDANCES IN A ROW FOR THE SAME PARAMETER AT THE SAME OUTFALL TRIGGER TIER 2 REQUIREMENTS. SEE PERMIT PART II SECTION B.
TIER 3: HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER AT ANYONE OUTFALL? YES ❑ NO ❑
IF YES, HAVE YOU CONTACTED THE DEMLR REGIONAL OFFICE? YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail an oriainal copv of this DMR, including all "No Discharae" reports, within 30 days of receipt of the lab results for at end of monitorina period in the
case of "No Discharge" reports) to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly esponsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I
am awaA that there a�e significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
ire of Permittee
Date: 11/1/2018-05/31/2021
Date
SWU-255, last revised 11/1/2012
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