NCG030034_MONITORING INFO_20180816

STORMWATER DIVISION CODING SHEET
NCG PERMITS-..
PERMIT NO.
DOC TYPE
❑ HISTORICAL FILE
MONITORING REPORTS
DOC DATE
❑ Du R bg I (Q
YYYYM MDD

Semi-annual Stormwater Dirge Monitoring Report
for North Carolina Division of Water Quality General Permit No. NCG030000
Date submitted August 16, 2018
CERTIFICATE OF COVERAGE NO. NCG030034
FACILITY NAME Isometrics, Inc.
COUNTY ROCKINGHAM
PERSON COLLECTING SAMPLES J FREI/ SwSG
LABORATORY Pace Analytical Lab Cert. ## 12L 40/ 633
Comments on sample collection or analysis: pH measured by
Stormwater Services Group (Lab Cert No. 5054)
Part A: Stormwater Benchmarks and. Monitoring Results
f
SAMPLE COLLECTION YEAR Year 6 Period 1
SAMPLE PERIOD ❑ Jan -June O July -Dec
or ❑ Monthly' (month)
DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
❑Zero -flow ❑Water Supply []SA
00ther C
PLEASE REMEMBER TO SIGN ON PAGES 2 AND/OR 3 4
No dischorge this period?z
Outfall No.
Date Sample
Collected'
(mo/dd/yr)
24-hour rainfall
amount,
Inches3
Total Suspended Solids
pH,
Standard units
Copper
Lead
Zinc
Non -Polar O&G/
Total Petroleum
Hydrocarbons
Total Toxic
Organics5
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
001
07/30/18
0.28"
14.6
7.72
< 0.0050
< 0.0050
0.011
< 5.0
n/a
002
07/30/18
0.28"
22.2
7.28
0.020
< 0.0050
< 0.010
< 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.
Z 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.
4 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
Page 1 of 3

Facilitie Olt incorporate a solvent management plan into the Stormwater 1*tion Prevention Plan may so certify, and the requirement for TTC9nitoring
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. Foss 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 fling 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 (Pri title)
(Signature) (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 m$/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 rer 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.
1] No discharge this period?z
' . OutfaEl Na.
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
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
Page 2 of 3

Note: if yolloort a sample value in excess of the benchmark, you must impleo Tier 1, Tier 2, or Tier 3 responses. See Genera! Permit text. 0
FOR PART A 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 O NO ❑
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES 13 NO ❑
REGIONAL OFFICE CONTACT NAME: Glenn White
Mail an original and one co,p V ot this DMR including all "No Discharge"" re orts within 30 days of receipt of the lab results or at end of monitoring period
in the case of "No Discharge" reportsl 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
Permit Date: 11/1/2012-10/31/2017
0�Rwlf
(Date)
SWU-245, last revised 10/25/2012
Page 3 of 3

Semi-annual Stormwater Daarge Monitoring Report
for North Carolina Division of Water Quality General Permit No. NCG030000
Date submitted March 1, 2018
CERTIFICATE OF COVERAGE NO. NCG030034
FACILITY NAME Isometrics, Inc.
COUNTY ROCKINGHAM
PERSON COLLECTING SAMPLES J FREI/ SwSG
LABORATORY Pace Analytical Lab Cert. # 12/ 40/ 633
Comments on sample collection or analysis: qH measured by
Stormwater Services Group Lab Cert No. 5054
Part A: Stormwater Benchmarks and Monitoring Results
SAMPLE COLLECTION YEAR Yr 5 Pd 2
SAMPLE PERIOD ❑ Jan -June [] July -Dec
p or ❑ Monthly' (month)
,� REED fr_Di SC HARGING TO CLASS ❑ORW ❑HQW [-]Trout ❑PNA
❑Zero -flow ❑Water Supply [:]SA
MAR 2 2 ®other C
CENTRAL FILF.3
DIAIR SECTION, PLEASE REMEMBER TO SIGN ON PAGES 2 AND/OR 3 4
No discharge this period?2
Outfall No.
Date Sample
Collected'
(mo/dd/yr)
24-hour rainfall
amount,
Inches3
Total Suspended Solids
pH,
Standard units
Copper
Lead
Zinc
Non -Polar O&G/
Total Petroleum
Hydrocarbons
Total Toxic
Organics
Benchmarks
-
-
100 mg/L
6.0 - 9.0
0.007 mg/L
0.03 mg/L
0.067 mg/L
15 mg/L
1 mg/L
001
02/11/18
0.43"
24.8
7.83
0.010
< 0.0050
1.9
< 5.0
n/a
002
02/11/18
0.43"
512
7.35
0.032
0.0080
2.3
< 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.
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.
" 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
Page 1 of 3

Facilities Oncorporate a solvent management plan into the Stormwater Poon Prevention Plan may so certify, and the requirement for TTO reoring
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. For 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)
ZtiV . '41,
Title ( Print title)
(Signature) (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 mgjL". where XX is the numerical value of the detection
limit, reporting limit, etc. in mg/L.
!Vote: 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.
n No discharge this period?2
outfall No.
Date Sample
Collected 1
(mo/dd/yr)
24-hour rainfall
amount,
Inches3
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
Page 2 of 3

Note: If yoport a sample value in excess of the benchmark, you must implOnt Tier 1, Tier 2, or Tier 3 responses. See General Permit text. 0
FOR PART'A 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 0 NO ❑
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES 0 NO ❑
REGIONAL OFFICE CONTACT NAME: Glenn White
Mail an original and, one cgpy of this DMR, intludina all "No Discharge" reports, within 30 days of receipt of the lob results for 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.
am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
(Signature of Permittee)
(Date)
Permit Date: 11/1/2012-10/31/2017 SWU-245, last revised 10/25/2012
Page 3 of 3

Semi-annual Stormwater D►l arge Monitoring Report
for North Carolina Division of Water Quality General Permit No. NCG030000
Date submitted August 29, 2017
CERTIFICATE OF COVERAGE NO.'UCG030'034-7
FACILITY NAME Isometrics. Inc.
COUNTY ROCKINGHAM
PERSON COLLECTING SAMPLES 1 FREI SwSG
LABORATORY Pace Analytical Lab Cert. # 12/ 401633
Comments on sample collection or analysis: __ pH measured by
Stormwater Services Group ILab Cert No. 5054)
Part A: Stormwater Benchmarks and Monitoring Results
SAMPLE COLLECTION YEAR 2017
SAMPLE PERIOD ❑ Jan -June ® July -Dec
or ❑ Monthly' month
DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
❑Zero -flow ❑Water Supply ❑SA
RFr. FIN/ ED 00ther C
SEP 18 2017 PLEASE REMEMBER TO SIGN ON PAGES 2 AND/OR 3 4
DVVP. of CMN
IINFORRATlON PROCESSING UNIT
' ❑ No discharge this period?'
Outfall No.
Date Sample
Collected'
(mo/dd/yr)
24-hour rainfall
amount,
Inches3
Total Suspended Solids
pH,
Standard units
Copper
Lead
Zinc
Non -Polar O&G/
Total Petroleum
Hydrocarbons
Total Toxic
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
001
08/07/17
1.07"
52.0
6.81
1.6
< 0.0050
< 0.010
< 5.0
n/a
002
08/07/17
1.07"
64.7
6.97
2.6
<0.0050
0.026
<5.0
n/a
1 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.
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.
4 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 ,t0 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
Page 1 of 3

Facilities 0ncorporate a solvent management plan into the Stormwater Poo Prevention Plan may so certify, and,the requirement for TTO Ooring
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. For 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."
LU AAht fit
Name (Print name)
Title (Print title) J
(Signa(re) (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 mrjL", where XX is the numerical value of the detection
limit, reporting limit, etc. in mg/L.
(Vote: If you report a'somple value in excess of the benchmark, you must implement Ter 1, Ter 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?Z
'
-
Out#all No:
'
Date Sample"
Collected'
(mo/dd/yr)
24-hour rainfall
amount,
a
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
Page 2 of 3

Note: if ysport a sample value in excess of the benchmark, you must impont Tier 1, rer 2, or Tier 3 responses. See General Permit text. 0
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 OUTFALLTRIGGER 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 If NO ❑
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES ®NO ❑
REGIONAL OFFICE CONTACT NAME: Glenn White
Mail an original and one copy of this DMR, including all "No Discharge" reports, within 30 days of receipt of the lob 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."
lill"
(Signature of Permittee)
617
( Date)
Permit Date: 11/1/2012-10/31/2017
SWU-245, last revised 10/25/2012
Page 3 of 3

• Semi-annual Stormwater 10harge Monitoring Report
for North Carolina Division of. Water Quality General Permit No. NCG030000
t
Date submitted December 13, 2016
CERTIFICATE OF COVERAGE NON CG030034
FACILITY NAME —Isometrics, Inc.
COUNTY ROCKINGHAM
PERSON COLLECTING SAMPLES J FREI/ SwSG
LABORATORY Pace Analytical _ Lab Cert. # _ 12140/ 633
Comments on sample collection or analysis: _PH measured by
Stormwater Services Group (Lab Cert No. 5054)_
Part A: Stormwater Benchmarks and Monitoring Results
SAMPLE COLLECTION YEAR 2016
SAMPLE PERIOD ❑ Jan -June a July -Dec
���E{���c�ARGINor El monthly' _ (month)
G S G TO.CLASS ❑ORW ❑HQW ❑Trout ❑PNA
❑Zero -flaw ❑Water Supply []SA
00ther C
HLES
TION PLEASE REMEMBER TO SIGN ON PAGES 2 AND/OR 3 4
❑ No discharge this period?Z
Outfall No.
Date Sample
Collected'
(mo/dd/yr)
24-hour rainfall
amount
Inches3
Total Suspended Solids
pH,
Standard units
^Q
Co pZ
Lead
Zinc
Non -Polar O&G/
Total Petroleum
Hydrocarbons
Total To
Or anics5
g
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
001
11/29/16
0.35"
195
8.48
0.023
0.0067
3.7
< 5.0
n/a
002
11/29/16
0.35"
238
8.01
0.035
0.014
4.3
< 5.0
n/a
i Monthly sampling (instead of semi-annual) must begin with the second consecutive benchmark exceedance for the same parameter at the same outfall.
Z 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.
4 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 (far 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).' RECEIVED
Permit Date: 11/1/2012-10/31/2017
DEC 1 A c,> tC.
CENTRAL FILES
DWR SECTION'
SWU-245, last revised 10/25/2012
Page 1 of 3

Facilities. incorporate a solvent management -plan into the Stormwater Pn.Prevention Plan may so certify, and the requirement for TTO toring
may be waived. The solvent management plan shall include a list of the total OW organic compounds used and the other elements listed in the G I
Permit. For those facilities electing to•employ the TTO monitoring waive, 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 r
(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)
,,,�ca 1
• (Signature) (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 , Wheri 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 Z 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?Z+
Outfall No.
Date Sample
i
Collected , ,
(mo/dd/y�)
24-hour rainfall
amount,
Inches;
Non -polar O&G/TPH by
EPA 1664 (SGT-HEM]
Total Suspended Solids, '
pH
Benchmarks =__>
_
-,
15 mk/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 .r.
. s Page 2 of 3

Note: If A&eport a sample value in excess of the benchmark, you must impant Tier 1, Tier Z, or Tier 3 responses. See General Permit text. A
FOR PART'hAND 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 ❑NOIZ
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail an on final and one cgey of this DMR including all "Na Discharge" reports, within 30 days of receipt of the lab results for at end of monitoring period
in the case of "No Discharge" reportsl 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."
Vk�cHnci- -j3, Ler- Fe W ��-r � 11)
(Signature of Permittee)
(Date)
SWU-245, last revised 10/25/2012
Page 3 of 3
Permit Date: 11/1/2012-10/31/2017

Semi-annual Stormwater D&ar a Monitoring Report
for North Carolina Division of Water Quality General Permit No. NCG0300.QO'
D
Date submitted December 17 2015
CERTIFICATE OF COVERAGE NO. N00030034
FACILITY NAME Isometrics Inc.
COUNTY ROCKINGHAM
PERSON COLLECTING SAMPLES J FREI/ SwSG
LABORATORY Pace Analytical Lab Cert. # 12/ 401633
Comments on sample collection or analysis: pH measured by
Stormwater Services Group (Lab Cert No. 5054)
Part A: Stormwater Benchmarks and Monitoring Results
SAMPLE COLLECTION YEAR 201S
SAMPLE PERIOD ❑ Jan -June 0 July -Dec
or ❑ Monthly' _ _(month)
DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
❑Zero -flow ❑Water Supply []SA
RECEIVED 00ther C
Jr-C 2 2 Z015 PLEASE REMEMBER TO SIGN ON PAGES 2 AND/OR 3 4
.ENTRAL FILES
70R SECTION _ .
❑ No discharge this period?
Outfall No.
Date Sample
Collected'
(mo/dd/yr)
24-hour rainfall
amount,
Inches3
Total Suspended Solids
pH,
Standard units
Copper
Lead
Zinc
Non -Polar O&G/Tota!
Total Petroleum
Hydrocarbons
Toxic
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
0.41"
52.4
6.90
0.0061
< 0.0050
0.018
< 5.0
n/a
002
11/30/15
1.06"
130
9.52
0.0082
0.0089
0.30
< 5.0
n/a
1 Monthly sampling (instead of semi-annual) must begin with the second consecutive benchmark exceedance for the same parameter at the same outfall.
z 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.
k 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
Page 1 of 3

Facilities. incorporate a solvent management plan into the Stormwater Pd&n Prevention Plan may so certify, and the requirement for TTO r toring
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 Gen Cal;
Permit. For 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."
Al ci4ALL,,.
Name (Print name)
Title (Print title)
/L( d_lad 6
(Signature)
1�D6�rs
(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 1, 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
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
Page 2 of 3

Note: If *Port a sample value in excess of the benchmark, you must impont Tier 1, Tier 2, or Tier 3 responses. See General Permit text. .
FOR PART A AND PART B MONITORING RESULTS:
• A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS. SEE PERMIT PART 11 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 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."
t� �
I`�1,viANC-V 'F . (�F
(Signature of Permittee)
Permit pate: 11/1/2012-10/31/2017
I i� m&C, 2© fs
(Date)
SWU-245, last revised 10/25/2012
Page 3 of 3

,
T .J
Semi-annual Stormwater Discharge Monitoring Report /
for North Carolina Division of Water Quality General Permit No. NCG030000�
Date submitted 12/01/2015
CERTIFICATE OF COVERAGE NO. NCG030041 SAMPLE COLLECTION YEAR _2015
Kinston
FACILITY NAME CROWN _nston SAMPLE PERIOD ❑ Jan -June ❑ July -Dec
COUNTY LENOIR or [ I'Monthlyl November
PERSON COLLECTING SAMPLES JIMMY YELVERTON DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
LABORATORY ENVIRONMENTAL #1 Lab Cert. # 10 ❑Zero -flow []water Supply ❑SA
Comments on sample collection or analysis: RECEIVED ❑Other_ C,SW,NSW
DEC 0 4 2015 PLEASE REMEMBER TO SIGN ON PAGES 2 AND/OR 3 4
Part A: Stormwater Benchmarks and Monitoring Results DWR CENTRAL
ECTION
❑ No discharge this period:
Outfall No.
Date Sample
Collected'
(mo/dd/yr)
24hour rainfall
amount,
Inches3
Total Suspended Solids
pH,
Standard units
Copper
Lead
Zinc
Non -Polar O&G/
Total Petroleum
Hydrocarbons
Total Toxic
Organics5
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
1
11/09/15
.750
2.9 mg/I
6.56
<0.002 mg/I
<0.005 mg/I
0.025 mg/I
<5.0 mg/I
SMP
2
11/09/15
.750
2.9 mg/I
6.50
<0.002 mg/I
<0.005 mg/I
0.026 mg/I
<5.0 mg/1
SMP
1 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.
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.
° 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
Page 1 of 3

Facilllties that incorporate a solvent management plan into the Stormwater Pollution Prevention Plan may so certify, and the requirement for TTO monitoring
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. Faf 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
(Tf0), 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."
Jimmy Yelverton
Name (Print name)
Safety & Environmental Engineer
a, 'LL
4ign
(Print title)ature) (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 mR/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?'
Outfall Na.
t
Date Sample
Collected'
(mo/dd/yr)
24-hour rainfall
amount,
Inches3
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
I;
i
i
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
Page 2 of 3

aw- � .
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 A 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 OLITFALL TRIGGER TIER 2 REQUIREMENTS. SEE PERMIT PART 11 SECTION B.
• TIER 3: HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDANCES FOR THE SAME PARAMETER AT ANYONE OUTFALL? YES ❑ NO
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail an orlainal and one coov of this DMR, includina all "No Discharae" reports. within 30 dovs 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 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 P�r�nittee)
Permit Date: 11/1/2012-10/31/2017
l.-7-of //S---
(Da e)
SWU-245, last revised 10/25/2012
Page 3 of 3

Semi-annual Stormwater Discharge Monitoring Report
for North Carolina Division of Water Quality General Permit No. NCG030000
Date submitted July 20, 2015
CERTIFICATE OF COVERAGE NO. NCG030034 SAMPLE COLLECTION YEAR 2015
FACILITY NAME _ Isometrics, Inc. SAMPLE PERIOD 0 Jan -June ❑ July -Dec 4-V�
COUNTY ROCKINGHAM or ❑ Monthly' (month)
PERSON COLLECTING SAMPLES J FREI/ SwSG DISCHARGING TO CLASS ❑ORW ❑HIQW []Trout ❑PNA
LABORATORY Pace Analytical Lab Cert. It12/ 40/ 67 R CE I W Mi ❑Zero -flow ❑Water Supply [:]SA r
Comments on sample collection or analysis: pH measured by JUL 2 7 2 Bother C
5tormwater Services Group 'Lab Cert No. 50541
(CENTRAL FILES PLEASE REMEMBER TO SIGN ON PAGES 2 AND/OR 3 4
ORR SFCTIC
Part A: 5tormwater Benchmarks and Monitoring Results
No discharge this period?Z
outfall No.
Rate Sample
Collected'
(mo/dd/yr)
24-hour rainfall
amount,
Inches;
Total Suspended Solids
pH,
Standard units
Copper
Lead
Zinc
Non -Polar O&G/Total
Total Petroleum
Hydrocarbons
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
0.41"
52.4
6.90
0.0061
< 0.0050
0.018
< 5.0
n/a
�r V A-
' Monthly sampling (instead of semi-annual) must begin with the second consecutive benchmark exceedance for the same pararneterVLAs�rrK ,outfall.
2 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�rrai gauge', equirement.
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
RECEIVED
JUL 2 7 2015
CENTRAL FILES
5WU-245, last revised 10/25/2012
Page 1 of 3

Fadlities that incorporate a solvent management plan into the Stormwater Pollution Prevention Plan may so certify, and the requirement for TTO monitoring
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. For 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."
Not Applicable — TTOs not used
Name (Print name)
Title (Print title)
(Signature)
(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, "<)(X me/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 Z 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 ?z
Outfall No.
Date Sample
Collected'
(mo/dd/yr)
24-hour rainfall
amount,
Inches3
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 — 4.0 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
Page 2 of 3

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 A AND PART B MONITORING RESULTS:
• A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS. SEE PERMIT PART 11 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 original and one copy of this OMR, 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."
IM IC-H A-c--L- 'G,
(Signature of Permittee)
Permit Date: 11/1/2012-10/31/2017
�zik
(Date)
SWU-245, last revised 10/25/2012
Page 3 of 3

is
Semi-annual Stormwater Discharge_ Monitoring Report
for North Carolina Division of Water Quality General Permit No. NC6030000
Date submitted Janua-N 22015
CERTIFICATE OF COVERAGE NO, NCG030034
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
RECEIVED
JAN 14 2015
CENTRAL FILES
SAMPLE COLLECTION YEAR 2014 DWR SECILON
SAMPLE PERIOD ❑ lan-June @July -Dec
or [—]monthly' (month)
DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
❑Zero -flow []WaterSupply ❑SA
00ther C
PLEASE REMEMBER TO SIGN ON PAGES 2 AND/OR 3 4
❑ No discharge this period?z
I
Outfall No.
Date Sample
Collected`
(mo/dd/yr)
24-hour rainfall
amount,
Inches
Total Suspended Solids
pH,
Standard units
Copper
Lead
Zinc
Non -Polar O&G/
Total Petroleum
Hydrocarbons
Total Toxic
Organlcss
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
08/12/14
0.65"
274
7.04
0.019
< 0.005o
< 0.010
< 5.0
n/a
002
12/24/14
0.67"
13.6
6.88
0.0055
< 0.0050
0.033
< 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.
z 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.
° See General Permit, Table 3 identifying the especially sensitive receiving water classifications where the more protective benchmark applies.
s 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-24S, last revised 10/25/2012
Page 1 of 3

Facilities that incorporate a solvent management plan into the 5tormwater Pollution Prevention Plan may so certify, and the requirement for TTO monitoring
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. For 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 Pollutions Prevention Plan."
Name (Print name)
Title (Print title)
7 GIs
(Signature) (Date)
m�
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 Genera! 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
Collected'
(mo/dd/yr)
24-hour rainfall
amount,
Inches3
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
Page 2 of 3

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 A AND PART B MONITORING RESULTS:
A BENCHMARK EXCEEDANCE TRIGGERS TIER 1 REQUIREMENTS. SEE PERMIT PART II SECTION B.
• 2 EXCEEDANCES I N A ROW FOR THE SAME PARAMETER AT THE SAME OUTFALL TRIGGE R TIER 2 REQUIREMENTS. SEE PERMIT PART R SECTION B.
• TIER 3: HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER AT ANY ONE OUTFALL? YES [] NO fil
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 for at end of monitoring period
in the case of "No Dischame" reports) to:
Division of Water Quality
Attm 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."
(Signature of Permlttee)
.A�' -Zorn
(Date)
Permit Date•.11/1/2012-10/31/2017 SWU-245, last revised 10/25/2012
Page 3 of 3

Semi-annual Stormwater Discharge Monitoring Report_
for North Carolina Division of Water Quality General Permit No. NCG030000
do
RECEIVED
SEP 08 Z014
Date submitted September 5, 2014 CENTRAL FILES
DWR SECTION
CERTIFICATE OF COVERAGE.NO. NCG030034 SAMPLE COLLECTION YEAR 2014
FACILITY NAME Isometrics, Inc. _ SAMPLE PERIOD ❑ Jars -June Q July -Dec
COUNTY ROCKINGHAM or ❑ Monthiy't (month)
PERSON COLLECTING SAMPLES J FREI/ SwSG DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
LABORATORY Pace Analytical_ _ Lab Cert. i# 12/ 40/ 67 ❑Zero -flow ❑Water Supply ❑SA
Comments on sample collection or analysis; pH measured by 00ther. C
Stormwat_er_ Services Group (Lab Cert No. S05.4_)
PLEASE REMEMBER TO SIGN ON PAGES 2 AND/OR 3 -i
Part A: 5tormwater Benchmarks and Monitoring Results
❑ No discharge this period?z
outfall No.
Date Sample
,
Collected
(mo/dd/yri
24-hour rainfall
amount,
Inches3
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
D.D67 mg/L
15 mg/L
1 mg/L
002
08/12/14
0.65"
274
7.04
0.019
< 0.0050
< 0.010
< 5.0
n/a .
1 Monthly sampling (instead of semi-annual) must begin with the second consecutive benchmark exceedance for the same parameter at the same outfall.
Z 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 maybe eligible for a'waiver of the rain gauge requirement.
° See General Permit, Table 3 identifying the especially sensitive receiving water classifications where the more protective benchmark applies.
s 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 5WU-245, last revised 10/25/2012
Page 1 of 3

Facilities ihafincorporate a solvent management plan into the Stormwater Pollution Prevention Plan -may so certify, and the requirement for TTO monitoring
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. For those facilities electing to employ the TTO monitoring waiver, the discharger shall sign the following certification statement:
rt • "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 fling 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)
� 1( t j -D(LATS,M A r
Title,(Print title)
r 0 S� Z�I�
(Signature) (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/t where XX is the numerical value of the detection
limit, reporting limit, etc. in mg/L.
S '
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?Z
Outfall No.Date
Sample
Collected,
(mo/dd/yr)
24-hour rainfall
amount,
Inches
Non -polar O&G/TPH by
EPA 1664 (5GT-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
Page 2 of 3

• 0 0
Note: ICE 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 A 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 11 SECTION B.
• TIER 3: HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES FOR THE SAME PARAMETER AT ANY ONE OUTFALL? YES ❑ NO Q
IF YES, HAVE YOU CONTACTED THE DWQ REGIONAL OFFICE? YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail an originol and one copy of this AMR, including all "No Discharge" reports, within 30 days of receipt of the lab results for at end of monitoring period
in the case of "No_Dischame" reports) to:
Division of Water Quality T
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."
jSignature of Permlttee)
(Date)
Permit Date: 11/1/2012-10/31/2017 SWU-245, last revised 10/25/2012
Page 3 of 3

ISOMETRICS, INC.
P. O. Box 660
Reidsville, NC 27323
(I i Ifs
Street Address:
1266 N. Scales St.
Reidsville, NC 27323-0660 LJ
www.isometrics-inc.com
04 September, 2014
Division of Water Quality
ATTN- Central Files
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject: SDO Monitoring Reports
Dear Sir or Madam;
}
f
Phone: [phone]
1-800-567-7510
Fax: [phone]
[e-mail]
Enclosed please find Stormwater Discharge Outfall Monitoring Reports for Isometrics, Inc., in
Reidsville NC (General Permit # NCG030000, Certificate of Coverage No.s NCG03-0033 and
NCG03-0034).
Sincerely,
Michael B. Leffew
Engineering Dept
s•.._ rj'•tr..w .� �i��i� ,s'ri :mar Jti:�.C: _� a3. !JJ�.. .. �f• �.: r;oi{�.'S.i �.. if-}.. j 1.2 .:2