NCG090004_DMR_20200512

SHERWIN
WILLIAMS.
.j
May 12, 2020
Central Files
Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
RECEIVED
MAY 18 2020
CENTIVt L FILES
DWR SECTION
Re: The Sherwin-Williams Company, Stagecoach Trail, Greensboro, NC
General Permit No. NCG090000
Certificate of Coverage No. NCG090004
Semi -Annual Monitoring - January 1, 2020 -June 30, 2020
Dear Sir or Madam:
Please find enclosed one original and one copy of the results of the semi-annual
monitoring for the Sherwin-Williams Company facility located at 113 Stagecoach Trail in
Greensboro, N.C.
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.
Best regards,
Jonathan L. Latimer
Stage Coach Trail Plant Manager

Semi-annual Stormwater Discharge Monitoring Report
for North Carolina Division of Water Quality General Permit No. NCG090000
Date submitted May 12, 2020
CERTIFICATE OF COVERAGE NO. NCG09 0 0 0 4
FACILITY NAME The Sherwin-Williams Manufacturing Company
COUNTY Guilford
PERSON COLLECTING SAMPLES Jeff Main
LABORATORY Research & Analytical Labs Lab Cert. # 34, 37701
Comments on sample collection or analysis:
N/A
Part A: Stormwater Benchmarks and Monitoring Results
SAMPLE COLLECTION YEAR 2020
SAMPLE PERIOD ❑■ Jan -June ❑ July -Dec
or ❑ Monthly' (month)
DISCHARGING TO CLASS ❑ORW ❑HQW ❑Trout ❑PNA
❑Zero -flow ❑Water Supply ❑SA
*Other WS-III; NSW
RECC�
' PLEASE REMEMBER TO SIGN ON THE REVERSE 4
MAY 18 2020
event rainfall' 0.5T n No discharge this period?'
Outfall No.Recoverable,
Date Sample Collected'
(mo/dd/yr)
Total Cadmium',
mg/L
Chromium III, Total
mg/L
Total Lead,
mg/L
pH,
Standard Units
Total Suspended Solids',
mg/L
Benchmarks
_
0.003 or 0.002
0.905
0.075
6.0-9.0
100 or 50
Parameter Code
-
01027
C0034
01051
00400
C0530
SDO01
04/20/2020
<0.001
<0.005
<0.005
7.34
11.4
SDO02
04/20/2020
<0.001
<0.005
<0.005
7.23
18
SDO03
04/20/2020
<0.001
<0.005
<0.005
6.93
22.8
' 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 may be eligible for a waiver of the rain gauge requirement.
'See General Permit text, Table 1, identifying the especially sensitive receiving water classifications where the more protective benchmark applies.
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 nrl 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: 11/1/2018-05/31/2021 SWU-255, last revised 11/1/2012
Page 1 of 2

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 Oil and
Grease,
mg/L
Total Suspended Solids'
mg/L
New Motor or
Hydraulic Oil
Usage,
gal/mo
Benchmarks
_
-
15
100 or 501
-
Parameter Code
-
46529
00552
C0530
NCOIL
N/A
Footnotes from Part A also apply to this Part B
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 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 E]
IF YES, HAVE YOU CONTACTED THE DEMLR REGIONAL OFFICE? YES []NO[]
REGIONAL OFFICE CONTACT NAME:
Mail an original 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 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."
ature of Permittee
Permit Date:11/1/2018-05/31/2021
S- // -,20—) O
Date
SWU-255, last revised 11/1/2012
Page 2 of 2

Research & Analytical Laboratories, Inc.
PO Box 473
Kernersville, NC 27285
Phone [phone] Fax [phone]
Email: [e-mail]
BIII To:
The Sherwin Williams Company
113 Stage Coach Trail
Greensboro, NC 27409
Attention: Jeff Main
Make all checks payable to: Research & Analytical Laboratories, Inc.
Date: May 01, 2020
TERMS: NET 30
"Past due invoices accrue interest at 1 112% interest per month until paid, should collection be required,
customer agrees to pay all expenses incurred including attorney fees."

RESEARCh & ANA[YTICA1
~F LAbORATORiES, INC.
For: Sherwin Williams Company - Stage Coach
113 Stage Coach Trail
Greensboro, NC 27409
Attn: Jeff Main
Report of Analysis
4/29/2020
mow— b ift
=DO NC#34
NC #37701
Client Sample ID: SD001
Lab Sample ID:
81161-01
Site: Sherwin Williams
Collection Date:
4/20/2020
8:17
Parameter
Method
Result
Units
Rep Limit Analt Analysis Date/Time
Cadmium, Total
EPA 200.7
<0.001
mg/L
0.001
SK
4/28/2020
Chromium, Total
EPA 200.7
<0.005
mg/L
0.005
SK
4/28/2020
Lead, Total
EPA 200.7
<0.005
mg/L
0.005
SK
4/28/2020
pH
SM 4500 H+B-2011
7.34
Std. Units
AB
4/20/2020 1643
Total Suspended Solids
SM 2450 D-2011
11.4
mg/L
5
AW
4/22/2020
Client Sample ID: SDO02
Lab Sample ID:
81161-02
Site: Sherwin Williams
Collection Date:
4/20/2020
8:19
Parameter
Method
Result
Units
Rep Limit Analyst Analysis Daterrime
Cadmium, Total
EPA 200.7
<0.001
mg/L
0.001
SK
4/28/2020
Chromium, Total
EPA 200.7
<0.005
mg/L
0.005
SK
4/28/2020
Lead, Total
EPA 200.7
<0.005
mg/L
0.005
SK
4/28/2020
pH
SM 4500 H+B-2011
7.23
Std. Units
AB
4/20/2020 1644
Total Suspended Solids
SM 2450 D-2011
18.0
mg/L
5
AW
4/22/2020
Client Sample ID: SDO03 Lab Sample ID: 81161-03
Site: Sherwin Williams Collection Date: 4/20/2020 8:24
Parameter Method Result Units Rep Limit Analys Analysis Date/Time
Cadmium, Total EPA 200.7 <0.001 mg/L 0.001 SK 4/28/2020
Chromium, Total EPA 200.7 <0.005 mg/L 0.005 SK 4/28/2020
P.O. Box 473 106 Short Street Kernersville, North Carolina 27284 Tel: [phone] Fax: [phone] www.randalabs.com Page 1
ra; 8as:c v1d

RESEARCh & ANAtyTICAt Report of Analysis
. - LAbORATORIESF INC. 4/29/2020
Client Sample ID: SDO03 Lab Sample ID: 81161-03
Site: Sherwin Williams Collection Date: 4/20/2020 8:24
Parameter Method Result Units Rep Limit Anal s Analysis Date/Time
Lead, Total EPA 200.7 <0.005 mg/L 0.005 SK 4/28/2020
pH SM 4500 H+B-2011 6.93 Std. Units AB 4/20/2020 1645
Total Suspended Solids SM 2450 D-2011
P.O. Box 473 106 Short Street Kernersville, North Carolina 27284
ra coe basic. vid
22.8 mg/L 5 AW 4/22/2020
NA = not analyzed
Tel: [phone] Fax: [phone] www.randalabs.com Page 2

RESEARCh & ANALYTICAL
LABORATORIES, INC.
Analytical / Process Consultations
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Environmental
Quality
Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out this form, please visit https:Hdeq.nc.gov/about/divisions/energy-mineral-land-resources/
npdes-stormwater-gps
Permit No.: N/C/6[/0 /q /4 /6 /Q / d/ or Certificate of Coverage No.: N_/C/G/Q/ `T 10101OI q1
Facility Name: !004W — hIIwAMS
County: G J (LOXIb Phone No. 33 io LSD' Iloa �l
Inspector: 315r-r m p, w
Date of Inspection: Lf h# he a O
Time of Inspection: N: 17 Am
Total Event Precipitation (inches): 0. 571
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*er(WAhaphis report is accurate and complete to the best of my knowledge:
0.
(Signature of Permittee or Designee)
1. Outfall Description:
Outfall No. 4J&00 Structure (pipe, ditch, etc.): �jPE
Receiving Stream:
N o XsE RE,J msu
Describe the industrial activities that occur within the outfall drainage area:
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: On A be
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): n 1,. AA n 17
4. Clarity: Choose the number which best describes the clarity of the discharge, where 1 is clear
and 5 is very cloudy:
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:
V 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:
0 2 3 4 5
7. Is there any foam in the stormwater discharge? Q Yes +(No.
8.
W1
Is there an oil sheen in the stormwater discharge? QYes KNo.
Is there evidence of erosion or deposition at the outfall? Q Yes �Vo.
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

T#'
Enaironmentol
Qualit v
Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out this form, please visit https:Hdeq.nc.goviabout/divisions/energy-mineral-land-resources/
npdes-stormwater-gps
Permit No.: or Certificate of Coverage No.: N_/C/G/O/q / O/p/ 0/ q/
Facility Name: SM>FU i Ai Wi LL-WA S
County: VI Lj-'�,q [L n Phone No. -;.?(a SSQ — 1 49,P 4
Inspector:
Date of Inspection: it /;.I0 / &
Time of Inspection: QA -- 19 A 01
Total Event Precipitation (inches):
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 certk at this rgport is accurate and complete to the best of my knowledge:
(Signature of Permittee or Designee)
1. Outfall Description: D
Outfall No. 5 D Structure (pipe, ditch, etc.): 1 1 p [
Receiving Stream:
ikn1 CAL K
Describe the industrial activities that occur within the outfall drainage area:
rr*AI T
Pagel 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:
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): N n ,�
4. Clarity: Choose the number which best describes the clarity of the discharge, where I is clear
and 5 is very cloudy:
(19 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:
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:
7.
8.
9.
0 2 3 4 5
Is there any foam in the stormwater discharge? 0 Yes XNO.
Is there an oil sheen in the stormwater discharge? QYes # No. —
Is there evidence of erosion or deposition at the outfall? Q Yes G 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
SAT-242, Last modified 06/01/2018

Environment'v,
Quaftty
Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on falling out this form, please visit https:Hdeq.nc.gov/about/divisions/energy-mineral-land-resources/
npdes-stormwater-gps
Permit No.: N/C/y/p / 9 /D /O/ b / p/ or Certificate of Coverage No.: N/C/G/D / 9 / O/ Q/V l yl
Facility Name: 4H63W1A)— OILLIAMS
County: -Qyt �tolrb Phone No.
Inspector:
Date of Inspection:
Time of Inspection: 09ra-4Q M
Total Event Precipitation (inches): © . 5 1
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 n �is report is accurate and complete to the best of my knowledge:
1 00
(Signature of Permittee or Designee)
1. Outfall Description:
Outfall No. 56019K Structure (pipe, ditch, etc.): V1 P
Receiving Stream:
Ha-Sc Pt �J
Describe the industrial activitie�s that occur within the outfall drainage area:
Y7A' ^I -r 4- C &-VA)(r 6#J J ArYV IL1&jS-
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: /' L E4
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): .100 'M be Q
4. Clarity: Choose the number which best describes the clarity of the discharge, where 1 is clear
and 5 is very cloudy:
0 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:
(9 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:
0 2 3 4 5
7. Is there any foam in the stormwater discharge? p Yes y No.
8. Is there an oil sheen in the stormwater discharge? OYes YNO.
9. Is there evidence of erosion or deposition at the outfall? o Yes XNo.
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