NCG020330_2024 DMR_20240325 (2)

NCDEQ Division of Energy, Mineral and Land Resources
Wastewater Discharge Monitoring Report (DMR) Form for NCG020000
Active and Inactive Mining Sites
Click here for instructions
Complete,sign,scan and submit the DMR via the Stormwater NPDES Permit Data Monitoring Report(DMR)Upload form within
30 days of receiving sampling results. Mail the original,signed hard copy of the DMR to the appropriate DEMLR Regional Office.
Certificate of Coverage No. NCGO2 0330 Person Collecting Samples:Faelan Hoese, ECT, Inc.
Facility Name:3M Pittsboro Laboratory Name:Eurofins Lancaster Laboratories Environment Testing,LLC
Facility County:Chatham Laboratory Cert. No.:521
Discharge during this period:0 Yes El No (if no,skip to signature and date)
Has your facility implemented mandatory Tier response actions this sample period for any benchmark exceedances?EYes ID No
If so,which Tier(I, II,or III)? Tier II(stormwater benchmark exceendance)
A copy of this DMR has been uploaded electronically via https://edocs.deq.nc.gov/Forms/SW-DMR Ekes ❑No
Date Uploaded: 3/25/2024
Analytical Monitoring Requirements for Outfalls with Industrial Activities—Monthly Average Effluent Limits in ,Daily
Maximum Effluent Limits in (Red)
Parameter Parameter Outfall 002 Outfall 003 Outfa11006 Outfall Outfall
Code
N/A Receiving Stream Class Class C Class C Class C
N/A Date Sample Collected MM/DD/YYYY 02/23/2024 02/23/2024 02/23/2024
00400 pH(6.0-9.0 FW,6.8-8.5 SW) 9.30 8.22 8.55
C0530 TSS in mg/L(25,20,or 10 a)(45,30, Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
1.5 3.5 19
00070 Turbidity of discharge 15 19 20
Turbidity downstream of discharge N/A N/A N/A
Turbidity upstream of discharge N/A N/A N/A
00545 Settleable Solids in mg/L(0.1),(0.2) Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
N/A N/A N/A
31616 Fecal Coliform N/A N/A N/A
61211 Enterococcus N/A N/A N/A
Daily Flow Rate in cfs(50%of 7Q10) 0.24 2.07 0.04
Additional parameters for Clay Mines
01105 Aluminum,total in mg/L(0.30 FW, Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
0.24 SW)(0.75 FW,0.24 SW)
01092 Zinc,total(as Zn)in mg/L(0.126 FW, Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
095 SW)(0.126 FW,0.095 SW)
Fluoride,total in mg/L(6.0)(6.0) Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
00951
00900 Hardness,total
01097 Antimony,total in mg/L(0.34 FW, Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
a SVi .i.34 F- n/a SW)
01002 Arsenic,total in mg/L(0.15 FW,0.069 Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
SW)(0.15 FW,G._:n9 SW)
C0034 Chromium Ill in mg/L(0.117 FW,n/a Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
SW)(0.905 FW,n/a SW)
Additional parameters for Feldspar Ore Mines
01105 Aluminum,total in mg/L(0.30 FW, Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
0.24 SW)(0.75 FW,0.24 SW)
01092 Zinc,total(as Zn)in mg/L(0.126 FW, Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
0 095 SW)(0.126 FW,0.095 SW)
00951 Fluoride,total in mg/L(6.0)(6.0) Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily

Additional parameters for Lithium Ore Mines
01105 Aluminum,total in mg/L(0.30 FW, Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
24 SW)(0.75 FW,0.24 SW)
00951 Fluoride,total in mg/L(6.0)(6.0) Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
Additional parameters for Phosphate Mines
00951 Fluoride,total in mg/L(6.0)(6.0) Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
39344 Alpha,Gross Particle Activity Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
Additional parameters for Industrial Sand Mines
00951 Fluoride,total in mg/L(6.0)(6.0) Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
C00334 Chromium Ill in mg/L(0.117 FW,n/a Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
SW)
39344 Alpha,Gross Particle Activity Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
Outfalls to Outstanding Resource Waters(ORW)and High Quality Waters(HQW)have a Monthly Average Effluent Limit for TSS of
and a Daily Maximum Effluent Limit of .Outfalls to Trout Waters(Tr)and Primary Nursery Areas(PNA)have a Monthly Average Effluent
Limit for TSS of and a Daily Maximum Effluent Limit of .Industrial Sand and Phosphate mines discharging to all other water
classification have a Monthly Average Effluent Limit for TSS of and a Daily Maximum Effluent Limit of
b See H-5 of the NCG020000 General Permit for turbidity requirements.
c Only outfalls to HQW,ORW,SA,SB,PNA,or Tr waters are required to monitor for Settleable Solids.
d Only outfalls to SA waters are required to monitor for Fecal Coliform
e Only outfalls to SA,SB,and SC waters are required to monitor for Enterococcus
FW(Freshwater) (Saltwater)
Notes(optional): See below.
"I certify by my signature below,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."
/7C10_4(
Signature of Permittee or Delegated Authorized Individual Date
[e-mail] 919-642-4010
Email Address Phone Number
Note:
pH at OF-002 measured in-field at 9.3 s.u. which places the outfall in Tier I status. As a corrective action, 3M is
evaluating and optimizing the calibration procedure used by the third-party samplers.