NCS000531_Stormwater Reports STI Polymer June 2020_20200629

Environmental
Qualify
Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out this form, please visit https://deq.nc.gov/about/divisions/energy-mineral-land-resources/
npdes-stormwater-gps
Permit No.: N/C/ 0/ 0/ 0/ 5/ 3/ 3/ 1/ or Certificate of Coverage No.: N/C/G/ I I I I I 1
Facility Name: STI Polymer
County: Lee Phone No.
Inspector: Devan Hailey
Date of Inspection: 05/19/2020
Time of Inspection:
Total Event Precipitation (inches): 0.98"
11 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, I certify that this report is accurate and complete to the best of my knowledge:
( C-
(Signature of Permittee or Designee)
1. Outfall Description:
Outfall 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
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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: medium grey
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): weak chlorine odor
4. Clarity: Choose the number which best describes the clarity of the discharge, where 1 is clear
and 5 is very cloudy:
1 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:
1 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:
1 2 3 4 5
7. Is there any foam in the stormwater discharge? NO
S. Is there an oil sheen in the stormwater discharge? NO
9. Is there evidence of erosion or deposition at the outfall? NO
10. Other Obvious Indicators of Stormwater Pollution:
List and describe
pH: 6.05 Temp:20.2 °C
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

N'r,11-0
Environmental
Quality
Stormwater Discharge Outfall (SDQ)
Qualitative Monitoring Report
For guidance on filling out this form, please visit https://deq.nc.gov/about/divisions/energy-mineral-land-resources/
npdes-stormwater-gps
Permit No.: N/C/ 0/ 0/ 0/ 5/ 3/ 3/ 1 I or Certificate of Coverage No.: NIC/G/ 1 I I 1 I I
Facility Name: STI Polymer
County: Lee Phone No.
Inspector: Devan Haile
Date of Inspection: 05/19/2020
Time of Inspection: 10:15 a.m.
Total Event Precipitation (inches): 0.98"
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, I certify that this report is accurate and complete to the best of my knowledge:
(Signature of PernAttee or Designee)
1. Outfall Description:
Outfall No. OF-2 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 parkin
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: light greenish
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): weak/non-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 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:
1 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:
1 2 3 4 5
7. Is there any foam in the stormwater discharge? NO
8, Is there an oil sheen in the stormwater discharge? NO
9. Is there evidence of erosion or deposition at the outfall? NO
10. Other Obvious Indicators of Stormwater Pollution:
List and describe
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

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