NCG020330 DMR SW (4)

STORMWATER DISCHARGE OUTFALL (SDO)
MONITORING REPORT
Permit Number NCG 020330
4th Quarter Mine Dewatering Sample
FACILITY NAME 3M Pittsboro
PERSON COLLECTING SAMPLE(S) Stanley B. Carter
CERTIFIED LABORATORY(S) Pace Lab # 67
Lab # 40
Part A: Specific Monitoring Requirements
SAMPLES COLLECTED DURING CALENDAR YEAR: 2015
(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. 919 642-4009
SIGNATURE OF PERMITTEE OR DESIGNEE
REQUIRED ON PAGE 2.
Outfall_ Date 50050
50050
00530 00076
00545
00400
No. Sample Total
Collected Flow (if app.)
Total
Rainfall
Total Turbidity
Suspended (NTU)
Solids
Settleable
Solids
pH
standard units
mo/dd/ r MMG
inches
m /l
MINI
6-9
mo/dd/ r
MG
inches
m /I
003 9/28/2015 26.61*
1.72
ND ND
ND
8.6**
-003 mine Dewatermg Uutran the Clow is measured quarterly with meters and reported as volume discharged
**pH reading done in house apprx. 15 minutes after sample taken.
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 Monitoring Requirements
Outfall Date
No. 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
m /I
m /I
unit
al/mo
Form SWU-247, last revised 212/2012
Pagel of 2

STORM EVENT CHARACTERISTICS:
Date _09/28/2015
Total Event Precipitation (inches): L72
Event Duration (hours): 12 (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 possility of fines.and imprisonment for knowing violations."
re of
/D
(Date)
Form SWU-247, last revised 212/2012
Page 2 of 2