NCG020970_2023 DMR_20240329

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. NCG020970 Person Collecting Samples: Ken Elliott
Facility Name: Davenport Mine Laboratory Name: Envirochem
Facility County: Washington Laboratory Cert. No.: DWQ 94, DLS 37229
Discharge during this period: ❑Yes 0 No (if no,skip to signature and date)
Has your facility implemented mandatory Tier response actions this sample period for any benchmark exceedances?❑Yes
No
If so,which Tier(I, II,or III)?
A copy of this DMR has been uploaded electronically via https://edocs.deq.nc.gov/Forms/SW-DMR 0 Yes ❑
No
Date Uploaded: 03-29-2024
Analytical Monitoring Requirements for Outfalls with Industrial Activities—Monthly Average Effluent Limits in(Blue),Daily
Maximum Effluent Limits in(Red)
Parameter Parameter Outfall Outfall Outfall Outfall Outfall
Code
N/A Receiving Stream Class C;SW C;Sw C;SW C;SW
N/A Date Sample Collected MM/DD/YYYY 03-15-2023 06-22-2023 09-06-2023 12-12-2023
00400 pH(6.0-9.0 FW,6.8-8.5 SW) No Flow No Flow No Flow No Flow
C0530 TSS in mg/L(25,20,or 10°)(45,30, Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
15a)
00070 Turbidity of discharge°
Turbidity downstream of discharge`'
Turbidity upstream of discharge
Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
00545 Settleable Solids in mg/L(0.1),(0.2)`
31616 Fecal Coliform d
61211 Enterococcus
Daily Flow Rate in cfs(50%of 7Q10)
Additional parameters for Clay Mines
Aluminum,total in mg/L(0.30 FW, Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
01105 0.24 SW)(0.75 FW,0.24 SW)
Zinc,total(as Zn)in mg/L(0.126 FW, Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
01092 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
00900 Hardness,total
01097 Antimony,total in mg/L(0.34 FW, Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
n/a SW)(0.34 FW,n/a SW)
01002 Arsenic,total in mg/L(0.15 FW,0.069 Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
5W)(0.15 FW,0.069 SW)
C0034 Chromium III 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
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 Lithium Ore Mines
Aluminum,total in mg/L(0.30 FW, Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
01105 0.24 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
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 Phosphate Mines
Fluoride,total in mg/L(6.0)(6.0) Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
00951
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)(0.905 FW,n/a SW)
39344 Alpha,Gross Particle Activity Avg Daily Avg Daily Avg Daily Avg Daily Avg Daily
a)Outfalls to Outstanding Resource Waters(ORW)and High Quality Waters(HQW)have a Monthly Average Effluent Limit for TSS of 20 mg/L
and a Daily Maximum Effluent Limit of 30 mg/L.Outfalls to Trout Waters(Tr)and Primary Nursery Areas(PNA)have a Monthly Average Effluent
Limit for TSS of 10 mg/L and a Daily Maximum Effluent Limit of 15 mg/L.Industrial Sand and Phosphate mines discharging to all other water
classification have a Monthly Average Effluent Limit for TSS of 25 mg/L and a Daily Maximum Effluent Limit of 45 mg/L.
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)SW(Saltwater)
Notes(optional): No withdrawals or discharges in 2023.
"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."
03-29-2024
Signature of Permittee or Delegated Authorized Individual Date
[e-mail] 252-339-9021
Email Address Phone Number