NCS000531_MONITORING INFO_20190930

Y71 A)
STORMWATER DIVISION CODING SHEET
N00 PERMITS
PERMIT NO.
�LJ
�E� 0
DOC TYPE
❑ HISTORICAL FILE
❑ MONITORING REPORTS
DOC DATE
❑
YYYYMMDD

STORMWATER DISCHARGE OUTFALL (SDO)
Permit Number: NCS S000531 or
Certificate of Coverage Number: NCG
MONITORING REPORT
FACILITY NAME STI Polymer
PERSON COLLECTING SAMPLE(S) Duncklee & Dunham. Lily Walker
CERTIFIED LABORATORY(S) ESC Lab Sciences
Part A: Specific Monitoring Requirements
RECEIVED
SEP 3 0 2019
SAMPLES COLLECTED DURING CALENDAR YEAR: f2UE-LAND GIUALITY
(This monitoring report shall be received by the DivisionTQ-,Ib'[e-mail] um
the date the facility receives the sampling results from the laboratory.)
COUNTY Lee
PHONE NO. [phone]
Lab # ENV375
SIGNATURE OF PERMITTEE OR DESIGNEE
REQUIRED ON PAGE 2.
Outfall
Date
50050
1.5
9.0
96
6-9
100
No.
Sample
Collected
Total
Flow (if app.)
Total
Rainfall
Styrene
Vinyl Acetate
Methyl
methacrylate
pH
COD
mo/dd/ r
MG
inches
m L
m L
m L
-
m L
Benchmark
1.5
9.0
96
6-9
100
OF-01
09/05/19
0.22
<0.000307
<0.00163
<0.0012,
6.27
63.5
J indicates the report value is an estimate; identification of the analyte is acceptable according to laboratory
Does this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per month?_ yes X no
(if yes, complete Part B)
Part 6: vemcie
Outfall
maintenance
Date
1A"I'vny mmnun u.,
50050
......�
00556
00530
00400
No.
Sample
Total Flow
Total Rainfall
Oil & Grease
Non -polar
Total
pH
New Motor Oil
Collected
(if applicable)
(if appl.)
O&G/TPH
Suspended
Usage
(Method 1664
Solids
SGT-HEM), if
appil.
mo/dd/ r
MG
inches
mg/1
mgA
Units
aUmo
Form SWU-246, last revised 21212012
Page 1 of 2

STORM EVENT CHARACTERISTICS: Mail Original and one copy to:
Division of Energy, Minerals, and Land Resources
Date: 09/05/19 Attn: Central Files
Total Event Precipitation (inches): 0.22 1612 Mail Service Center
Event Duration (hours): (only if applicable — see permit.) Raleigh, North Carolina 27699-1612
(if more than one storm event was sampled)
Date
Total Event Precipitation (inches):
Event Duration (hours): (only if applicable — see permit.)
"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. 1 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)
Form S WU-246, last revised 21212012
Page 2 of 2

Environmental
Quality
Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance onfi/ling out thisform, please visit https:Hdeq.nc.gov/about/divisions/energy-mineral-land-resources/
n pdes-stornwater-gps
Permit No.: N/C( 0 / 0 / 0 / 5 (3 / 3 / I / or Certificate of Coverage No.: N/C/G/, / / / / / /
Facility Name: STI
County: Lee
Inspector: Lily Walker
Date of Inspection: 09/05/2019
Time of Inspection:
Total Event Precipitation (inches): 0.22"
Phone No.
All permits require qualitative monitoring to be performed during a "measurable storm event."
A "measurable storm event" is a storm event that results in an actual discharge from the permitted site
outfall. The previous measurable storm event must have been at least 72 hours prior. The 72-hour storm
interval does not apply if the permittee is able to document that a shorter interval is representative for
local storm events during the sampling period, and the permittee obtains approval from the local DEMLR
Regional Office.
By this signature, 1 certify that this report is accurate and complete to the best of my knowledge:
(Signature of Pennittee or Designee)
1. Outfall Description:
Outfall No. OF -I Structure (pipe, ditch, etc.): plastic pipe to vegetated ditch
Receiving Stream:
Little Buffalo Creek
Describe the industrial activities that occur within the outfall drainage area: bulk storage
and unloadinp of raw chemicals chemical ASTs waste material pallets
Page I of 2
SWU-242, Last modified 06/01/2018

2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors: very light gray, clear
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): No distinct odor
4. Clarity: Choose the number which best describes the clarity of the discharge, where I is clear
and 5 is very cloudy:
1 O 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where I is no solids and 5 is the surface covered with floating solids:
O 2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where I is no solids and 5 is extremely muddy:
O 2 3 4 5
7. Is there any foam in the stormwater discharge? o Yes ® No.
8. Is there an oil sheen in the stormwater discharge? OYes QNo.
9. Is there evidence of erosion or deposition at the outfall? o Yes ®No.
10. Other Obvious Indicators of Stormwater Pollution:
List and describe: pH: 8.49
facility placed stone rip -rap around outfall pipe to address previous erosion issue looks stable some
evidence of erosion downstream of outfall
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition may be
indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 of 2
SWU-242, Last modified 06/01/2018

Environmental
Quality
Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
F'or guidance onfrl/ing out thisform, please visit hUps:Hdeq.nc.gov/about/divisions/energy-mineral-land-resources/
npdes-storm water-gps
Permit No.: N/C/ 0 ( 0 /.0 /.5 /.3 /.3 / I / or Certificate of Coverage No.: N/C/G/ /, / . / / ( /.
Facility Name: STI Polymer
County:
Inspector:
Date of Inspection: 09/05/2019
Time of Inspection:
Total Event Precipitation (inches): 0.22"
Phone No.
All permits require qualitative monitoring to be performed during a "measurable storm event."
A "measurable storm event' is a storm event that results in an actual discharge from the permitted site
outfall. The previous measurable storm event must have been at least 72 hours prior. The 72-hour storm
interval does not apply if the permittee is able to document that a shorter interval is representative for
local storm events during the sampling period, and the permittee obtains approval from the local DEMLR
Office.
By this signature, I certify that this report is accurate and complete to the best of my knowledge:
(Signature of Permittee or Designee)
1. Outfall Description:
Outfall No. OF -A_ Structure (pipe, ditch, etc.): concrete culvert to creek
Receiving Stream:
Little Buffalo Creek
Describe the industrial activities that occur within the outfall drainage area: vehicle
Page I of 2
S W U-242, Last modified 06/01 /2018

2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors: Clear
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): No distinct odor
4. Clarity: Choose the number which best describes the clarity of the discharge, where 1 is clear
and 5 is very cloudy:
O 2 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where I is no solids and 5 is the surface covered with floating solids:
O 2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where 1 is no solids and 5 is extremely muddy:
O 2 3 4 5
7. Is there any foam in the stormwater discharge? q Yes Q No.
S. Is there an oil sheen in the stormwater discharge? OYes QNo.
9. Is there evidence of erosion or deposition at the outfall? O Yes QNo.
10. Other Obvious Indicators of Stormwater Pollution:
List and describe: very little flow, vegetation Prowing in pipe outlet area
no significant signs of pollution
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition may be
indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 of 2
SWU-242, Last modified 06/01/2018

STORMWATER DISCHARGE OUTFALL (SDO)
Permit Number: NCS S000531 or
Certificate of Coverage Number: NCG
MONITORING REPORT
SAMPLES COLLECTED DURING CALENDAR YEAR: 2019
(This monitoring report shall be received by the Division no later than 30 days from
the date the facility receives the sampling results from the laboratory.)
FACILITY NAME STI Polymer COUNTY Lee
PERSON COLLECTING SAMPLE(S) Duncklee & Dunham, Lily Walker PHONE NO. [phone]
CERTIFIED LABORATORY(S) ESC Lab Sciences Lab # ENV375
SIGNATURE OF PERMITTEE OR DESIGNEE
REQUIRED ON PAGE 2.
Part A: Specific Monitoring Requirements
Outfall
Date
150050 : "
1.5-
9.0
96 ..
6-9
100
No.
•
Sample -
Collected.
Total •
Flow (if app.).
Total
Rainfall'
Styrene
.-
Viuyl Acetate
Methyl -
methacrylate
pH
..
COD
_
`no/dd/ 7
MG
inches'.
m-g/L
m.
ingfL
Benchmark
>
`; -,
_
1.5 .
9.0
96,:
.6 - 9
10011,
OF-01
09/05/19
0.22
< 0.000307
<0.00163
< 0.0012
6.27
63.5
J indicates the report value is an estimate; identification ofthe analyte is acceptable according to laboratory
Does this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per month?_ yes X no
(if yes, complete Part B)
O..r 10 17.J ; ! M........ — A.d;v; v M-4.A.. Ra mwnfc
Out -fall
'Date'
50050
00556'
00530
00400'
No.
Sample
Total Flow
Total Rainfall
Oil & Grease' ,
Non -polar
Total
pH, '
New Motor Oil
Collected,.
(if applicable).
(ifappl.)
O&G/TPH
Suspended
Usage
.
,
(Method1664. -
Solids-
SGT-HEM), if
appl.
mo/dd/ r' . '_
MG'- ., . .- ;inches
.. _
m
m .. ..
Units
aUmo-
Form S WU-246, last revised 21212012
Page I of 2

STORM EVENT CHARACTERISTICS: Mail Original and one copy to:
Division of Energy, Minerals, and Land Resources
Date: 09/05/19 Attn: Central Files
Total Event Precipitation (inches): 0.22 1612 Mail Service Center
Event Duration (hours): (only if applicable — see permit.) Raleigh, North Carolina 27699-1612
(if more than one storm event was sampled)
Date
Total Event Precipitation (inches):
Event Duration (hours): (only if applicable — see permit.)
"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."
Q �� Vy,4 Lc--
(Signature of Permittee) (Date)
Form S WU-246, last revised 21212012
Page 2 of 2

Environmental
Quality
Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out thisjorm, please visit https://deq.nc.gov/about/divisions/energy-mineral-land-resources/
npdes-storm water-gps
Permit No.: N/C/ 0 ( 0 / 0 / 5 /.3 / 3 / I / or Certificate of Coverage No.: N/C/G/ / / / / / /
Facility Name: STI Polymer
County: Lee
Inspector:
Date of Inspection: 09/05/2019
Time of Inspection: 1345
Total Event Precipitation (inches): 0.22"
Phone No.
All permits require qualitative monitoring to be performed during a "measurable storm event."
A "measurable storm event" is a storm event that results in an actual discharge from the permitted site
outfall. The previous measurable storm event must have been at least 72 hours prior. The 72-hour storm
interval does not apply if the permittee is able to document that a shorter interval is representative for
local storm events during the sampling period, and the permittee obtains approval from the local DEMLR
Regional Office.
By this signature, 1 certify that this report is accurate and complete to the best of my knowledge:
(Signature of Permittee or Designee)
1. Outfall Description:
OutfalI No. OF-1 Structure (pipe, ditch, etc.): plastic pipe to vegetated ditch
Receiving Stream:
Little Buffalo Creek
Describe the industrial activities that occur within the outfall drainage area: bulk storage
and unloading of raw chemicals chemical ASTs, waste material pallets
Page I of 2
SWU-242, Last modified 06/01/2018

2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors: very light gray, clear
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): No distinct odor
4. Clarity: Choose the number which best describes the clarity of the discharge, where 1 is clear
and 5 is very cloudy:
1 O 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where I is no solids and 5 is the surface covered with floating solids:
O 2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where I is no solids and 5 is extremely muddy:
lO 2 3 4 5
7. Is there any foam in the stormwater discharge? o Yes Q No.
8. Is there an oil sheen in the stormwater discharge? oYes QNo.
9. Is there evidence of erosion or deposition at the outfall? o Yes QNo.
10. Other Obvious Indicators of Stormwater Pollution:
List and describe: pH: 8.49
facility placed stone rip -rap around outfall pipe to address previous erosion issue looks stable some
evidence of erosion downstream of outfall
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition may be
indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 of 2
SWU-242, Last modified 06/0112018

En"monmenral
Quality
Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance onfilling out thisform, please visit https://deq.ne.gov/about/divisions/energy-mineral-land-resources/
npdes-storm water-gps
Permit No.: N/C/ 0 /, 0 / 0 / 5 ( 3 / 3 / 1 / or Certificate of Coverage No.: N/C/G/ / / / / / /
Facility Name:
County: Lee
Inspector: Lit
Date of Inspection: 09/05/2019
Time of Inspection: 1415
Total Event Precipitation (inches): 0.22„
Phone No.
All permits require qualitative monitoring to be performed during a "measurable storm event."
A "measurable storm event" is a storm event that results in an actual discharge from the permitted site
outfall. The previous measurable storm event must have been at least 72 hours prior. The 72-hour storm
interval does not apply if the permittee is able to document that a shorter interval is representative for
local storm events during the sampling period, and the permittee obtains approval from the local DEMLR
Regional Office.
By this signature, 1 certify that this report is accurate and complete to the best of my knowledge:
Permittee or Designee)
1. Outfall Description:
Outfall No. -OF -a- Structure (pipe, ditch, etc.): concrete culvert to creek
Receiving Stream:
Little Buffalo Creek
Describe the industrial activities that occur within the outfall drainage area: vehicle
Page 1 of 2
SWU-242, Last modified 06/01/2018

2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors: Clear
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): No distinct odor
4. Clarity: Choose the number which best describes the clarity of the discharge, where 1 is clear
and 5 is very cloudy:
lO 2 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where 1 is no solids and 5 is the surface covered with floating solids:
0 2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where I is no solids and 5 is extremely muddy:
OI 2 3 4 5
7. Is there any foam in the stormwater discharge? o Yes Q No.
8. Is there an oil sheen in the stormwater discharge? OYes QNo.
9. Is there evidence of erosion or deposition at the outfall? o Yes QNo.
10. Other Obvious Indicators of Stormwater Pollution:
List and describe: very little flow. vegetation growing in pipe outlet area
no significant signs of pollution
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition may be
indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 of 2
SWU-242, Last modified 06/01/2018