NCG030033 DMR SW

Semi-annual Stormwate, ,ischarge Monitoring Report
for North Carolina Division of Water Quality General Permit No. NCG030000
Date submitted July 20, 2015
CERTIFICATE OF COVERAGE NO. NCG030033
FACILITY NAME Isometrics, Inc.
COUNTY ROCKINGHAM
PERSON COLLECTING SAMPLES J FREI/ SwSG
LABORATORY Pace Analytical Lab Cert. # 12/ 40/ 67
Comments on sample collection or analysis: pH measured by
Stormwater Services Group (Lab Cert No. 5054)
Part A: Stormwater Benchmarks and Monitoring Results
1W
SAMPLE COLLECTION YEAR 2015
SAMPLE PERIOD 0 Jan -June ❑ July -Dec
RECQyg® or E] Monthly' (month)
b 5 ARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
NOV 10 2015 ❑Zero -flow [:]WaterSupply []SA
CENTRAL FILES 00ther C
DWR SECTION
PLEASE REMEMBER TO SIGN ON PAGES 2 AND/OR 3 4
❑ No discharge this Deriod?Z
Outfall No.
Date Sample
Collected'
(mo/dd/yr)
24-hour rainfall
amount,
a
Inches
Total Suspended Solids
pH,
Standard units
Copper
Lead
Zinc
Non -Polar O&G/
Total Petroleum
Hydrocarbons
Total Toxic
s
Organics
Benchmarks =__>
_
-
100 mg/L or 50 mg/L
6.0-9.0
0.007 mg/L
0.03 mg/L
0.067 mg/L
15 mg/L
1 mg/L
002
06/18/15
0.56"
38.6
7.05
0.0050
< 0.0050
0.023
< 5.0
n/a
_ Monthly sampling (instead of semi-annual) must begin with the second consecutive benchmark exceedance for the same parameter at the same outfall.
2 For sampling periods with no discharge at any single outfall, you must still submit this discharge monitoring report with a checkmark here.
4The 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.
a See General Permit, Table 3 identifying the especially sensitive receiving water classifications where the more protective benchmark applies.
5 Total Toxic Organics sampling is applicable only for those facilities which perform metal finishing operations, manufacture semiconductors, manufacture
electronic crystals, or manufacture cathode ray tubes. For purposes of this permit the definition of Total Toxic Organics is that definition contained in the EPA
Effluent Guidelines for the facility subject to the requirement to sample (for metal finishing use the definition as found in 40 CFR 433.11; for semiconductor
manufacture use the definition as found in 40 CFR 469.12; for electronic crystal manufacture use the definition as found in 40 CFR 469.22; and for cathode ray
tube manufacture use the definition found in 40 CFR 469.31).
Permit Date: 11/1/2012-10/31/2017 SWU-245, last revised 10/25/2012
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Facilities that )rporate a solvent management plan into the Stormwater Pollut-­ !, Irevention Plan may so certify, and the requirement for TTO mor ng
may be waived. The solvent management plan shall include a list of the total toxic organic compounds used and the other elements listed in the General
Permit. 4r those facilities electing to employ the TTO monitoring waiver, the discharger shall sign the following certification statement:
"Based upon my inquiry of the person or persons directly responsible for managing compliance with the permit monitoring requirement for total toxic organics
(TTO), I certify that to the best of my knowledge and belief, no dumping of concentrated toxic organics into the stormwater or areas which are exposed to rainfall or
stormwater runoff has occurred since filing the last discharge monitoring report. I further certify that this facility is implementing the all the provisions of the
solvent management plan included in the Stormwater Pollution Prevention Plan."
Name (Print name)
Title (Print title)
loll
N70 /�
(Si; nature) (Date
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.
Part B: Vehicle Maintenance Area Monitoring Results: only for facilities averaging > 55 gal of new oil per month.
❑ No discharge this period?2
Outfall No.
Date Sample
i
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
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.
Permit Date: 11/1/2012-10/31/2017 SWU-245, last revised 10/25/2012
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Note: .7u report a sample value in excess of the benchmark, you must ement Tier 1, Tier 2, or Tier 3 responses. See General Permit te.
FOR PART A AND PART B MONITORING RESULTS:
• A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS. SEE PERMIT PART II SECTION B.
• 2 EXCEEDANCES INA 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 0
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail an original and one copy of this DMR, including all "No Discharge" reports, within 30 days of receipt of the lab results (or at end of monitoring period
in the case of "No Discharge" reports) to:
Division of Water Resources
Attn: DWR 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."
(Signature of Permittee)
Permit Date: 11/1/2012-10/31/2017
AID 0 04,-, 20
(Date)
SWU-245, last revised 10/25/2012
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