NCG090006_DMR_20210715

Semi-annual Stormwater Discharge Monitoring Report
for North Carolina Division of Water Quality General Permit No. NCG090000
Date submitted _7/15/21
CERTIFICATE OF COVERAGE NO. NCG090006
FACILITY NAME _Mallard Creek Polymers LLC
COUNTY Mecklenburg r�
PERSON COLLECTING SAMPLES Jens Schoenfuss i � © REED/F D
LABORATORYPAR Lab Lab Cert. # 20 JUL 2 6 2021
Comments on sample collection or analysis:
CENTRAL FILES
DWR SECTION
Part A: Stormwater Benchmarks and Monitoring Results
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_C Water Body
PLEASE REMEMBER TO SIGN ON THE REVERSE 4
❑ No discharge this period?'
Outfall No.
Date Sample
Collected'
(mo/dd/yr)
24-hour rainfall
amount,
Inches3
Total Cadmium
Total Chromium
Total Lead
Benchmarks =__>
_
-
0.001 mg/L
1.0 mg/L
0.03 mg/L
001
6/30/21
0.74
<0.001 mg/I
0.005 mg/I
0.002 mg/I
002
6/30/21
1 0.74
1 <0.001 mg/I
0.005 mg/I
0.002 mg/I
003
6/30/21
0.74
<0.001 mg/I
0.005 mg/I
<0.002 mg/I
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.
3The 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.
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:11/1/2012-10/31/2017 SWU-255, last revised 10/25/2012
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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 O&G/TPH by
EPA 1664 (SGT-HEM)
Total Suspended Solids
pH
Benchmarks ===>
-
15 mg/L
100 mg/L or 50 mg/L*
6.0 —9.0 SU
001
6/30/20
0.74
NA
112 mg/I
6.83
002
6/30/20
0.74
NA
93mg/I
6.89
003
6/30/20
0.74
NA
48 mg/I
6.57
Footnotes from Part A also apply to this Part B
* See General Permit text, Table 5, identifying the especially sensitive receiving water classifications where the more protective benchmark applies.
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.
FOR PART AAND 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 ANY ONE OUTFALL? YES ❑ NO
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail an oriaina/ and one copy of this DMR. includina all "No Discharae" reports, within 30 days of receipt of the lab results for at end of monitoring period
in the case of "No Discharae" 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 responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I
am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
of Permittee)
(Date)
Permit Date:11/1/2012-10/31/2017 SWU-255, last revised 10/25/2012
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