NCG020330_DMR_20200817

STORMWATER DISCHARGE OUTFALL (SDO)
MONITORING REPORT
Permit Number NCG 020330
FACILITY NAME 3M Pittsboro
PERSON COLLECTING SAMPLE(S) Andrew J. Miller
CERTIFIED LABORATORY(S) Pace Lab # 67
Lab # 40
Part A: Specific Monitoring Requirements
SAMPLES COLLECTED DURING CALENDAR YEAR: 2020
(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.)
COUNTY Chatham
PHONE NO. L919, 642-4009
SIGNATURE OF PERMITTEE OR DESIGNEE
REQUIRED ON PAGE 2.
Outfall
No.
Date
Sample
Collected
50050
00530
00076
00545
00400
Total
Flow (if app.)
Total
Rainfall
Total
Suspended
Solids
Turbidity
(NTU)
Settleable
Solids
pH
standard units
mo/dd/ r
MMG
inches
m
Ml/1
6-9
002
5/18/2020
1.203
1.06
13.4
21.4
ND
004
5/18/2020
0.277
1.06
9.0
4.1
ND
005
5/18/2020
1.373
1.06
4.8
1 6.3
ND
002
8/3/2020
1.056
0.93
20.3
22.9
ND
004
8/3/2020
0.199
0.93
9.3
12.3
ND
N
005
8/3/2020
1.205
0.93
5.2
4.3
ND
Does this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per month? _X_ yes _no
(if yes, complete Part B)
Part B: Vehicle Maintenance Activitv Monitorin¢ Requirements
Outfall
No.
Date
Sample
Collected
50050
00556
00530
00400
Total Flow
(if applicable)
Total
Rainfall
Oil & Grease
(if appl.)
Non -polar
O&G/TPH
(Method 1664
SGT-HEM), if
appl.
Total
Suspended
Solids
pH
New Motor
Oil Usage
mo/dd/ r
MG
inches
mgfl
m /1
unit
al/mo
006
5/18/2020
0.052
1.06
ND
ND
7.01
113
006
8/3/2020
0.045
0.93
ND
ND
6.96
138.3
Form SWU-247, last revised 21212012
Page 1 of 2

STORM EVENT CHARACTERISTICS:
Date 8/3/2020
Total Event Precipitation (inches): 0.93
Event Duration (hours): (only if applicable — see permit.)
(if more than one storm event was sampled)
Date
Total Event Precipitation (inches):
Event Duration (hours): (only if applicable — see permit.)
Mail Original and one copy to:
Division of Water Quality
Attn: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
"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,.snd imprisonment for knowing violations."
d O
(Date)
Form SWU-247, last revised 21212012
Page 2 of 2