WI0700087_GW Sampling Results_20220228

DocuSign Envelope ID: CDE6FDD8-7FC7-4F8B-875D-CA657CF10F8A
ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
S. DANIEL SMITH
Director
Sam Grubbs
Ashton Lewis Lumber Company, Inc.
P.O. Box 25
Gatesville, North Carolina 28562
NORTH CAROLINA
Environmental Quality
February 28, 2022
SUBJECT: Groundwater Sampling Results
UIC Permit No. WI0700087
Issued to Ashton -Lewis Lumber Company, Inc.
Gatesville, Gates County, North Carolina
Dear Mr. Grubbs:
Staff from the Washington Regional Office of the Water Quality Regional Operations
Section collected samples of the two wells (East Well and West Well) in your geothermal heat
pump system on January 12, 2022. The samples were analyzed for metals, nutrients, and other
inorganic constituents by the Division of Water Resources laboratory. A summary table of the
analytical results, as well as the laboratory reports, field sampling forms, and definitions of
laboratory data qualifiers are attached to this letter. The following constituents were detected at
concentrations above state groundwater standards in both samples from your system:
Parameter
Units
NC Groundwater
Standard
Results
Fluoride
Milligrams per Liter
(mg/L)
2
2.5 (East Well)
2.3 (West Well)
Total Dissolved Solids
Milligrams per Liter
(mg/L)
500
838 (East Well)
906 (West Well)
Iron
Micrograms per Liter
(ug/L)
300
380 (East Well)
<50 (West Well)
D_E
iO i'TH CAROLINA
oeparnnem el Enwmnmenul awn
North Carolina Department of Environmental Quality I Division of Water Resources
Washington Regional Office 1943 Washington Square Mall I Washington, North Carolina 27889
252.946.6481

DocuSign Envelope ID: CDE6FDD8-7FC7-4F8B-875D-CA657CF10F8A
Mr. Sam Grubbs
February 28, 2022
Page 2 of 2
These exceedances should not affect the use of the wells for your geothermal heat pump
system; however, it is recommended before using these wells for a potable water source, that you
consult with Albemarle Regional Health Services. If you have any questions regarding the
sampling results or your permit, please feel free to contact me at [phone].
Sincerely,
Dwight Randy Sipe, P.G., Hydrogeologist
Water Quality Regional Operations Section
Division of Water Resources, NCDEQ
Attachments
cc: Shristi Shrestha — DWR Groundwater Resources Section (electronic copy)
Laserfiche
wocARouto
D_E
D,p,ba.m m eaalroama.tar
North Carolina Department of Environmental Quality I Division of Water Resources
Washington Regional Office 1943 Washington Square Mall 1 Washington, North Carolina 27889
252.946.6481

NC DIVISION OF WATER QUALITY
LABORATORY ANALYTICAL RESULTS
5A7 GEOTHERMAL UNDERGROUND INJECTION CONTROL (UIC) WELL
PERMIT NO.: WI0700087
PERMITTEE(S): Ashton -Lewis Lumber
SAMPLE COLLECTION DATE: 01/12/2022
Parameter
Fecal Coliform
Total Coliform
Total Dissolved Solids
Chloride, CI
Fluoride, FL
Sulfate, SO4
units
CFU/100m1
CFU/100m1
mg/L
mg/L
mg/L
mg/L
NC MCL and/or EPA Standard
NC MCL = < 1
NC MCL = 1
NC MCL = 500
NC MCL = 250
NC MCL = 2
NC MCL = 250
EPA SDWS = 500
EPA SDWS = 250
EPA PDWS = 4.0
EPA SDWS = 250
East Well Sample Results
< 1
< 1
838
180.0
2.5
59
West Well Sample Results
< 1
< 1
906
190.0
2.3
64
Parameter
Nitrate + Nitrite
Nitrite
Hardness as CaCO3
(by Calculation) *
Aluminum, Al
Arsenic, As
Calcium, Ca
units
mg/L as N
mg/L as N
mg/L as CaCO3
pg/L
tag/L
mg/L
NC MCL and/or EPA Standard
NC MCL = 11
NC MCL = 1
NS
NS
NC MCL = 10
NS
EPA PDWS = 11
EPA PDWS = 1
EPA SDWS = 50 to 200
EPA PDWS = 10
East Well Sample Results
<0.02
<0.01
<50
<2.0
1.3
West Well Sample Results
0.68
0.11
<50
<2.0
1.4
Parameter
Chromium, Cr
Copper, Cu
Iron, Fe
Potassium, K
Magnesium, Mg
Manganese, Mn
units
pg/L
pg/L
pg/L
mg/L
mg/L
pg/L
NC MCL and/or EPA Standard
NC MCL = 10
NC MCL = 1000
NC MCL = 300
NS
NS
NC MCL = 50
EPA PDWS = 100
EPA SDWS = 1000; PDWS = 1300
EPA SDWS = 300
EPA SDWS = 50
East Well Sample Results
<5.0
15
380
13
1.6
<10
West Well Sample Results
<5.0
44
<50
14
1.6
<10
Parameter
Sodium, Na
Nickel, Ni
Lead, Pb
Zinc, Zn
pH (field)
units
mg/L
pg/L
pg/L
pg/L
units
NC MCL and/or EPA Standard
NS
NC MCL = 100
NC MCL = 15
NC MCL = 1000
NC MCL = 6.5-8.5
EPA PDWS = 15
EPA SDWS = 5000
EPA SDWS = 6.5 to 8.5
East Well Sample Results
290
<2.0
<2.0
220
6.5
West Well Sample Results
330
<2.0
2.1
130
6.5
NC MCL = North Carolina Maximum Contamination Limits per 15A NCAC 2L .0200
EPA PDWS = Environmental Protection Agency Primary Drinking Water Standards
EPA SDWS = Environmental Protection Agency Secondary Drinking Water Standards
NS = No Standard
Calculation performed by WaRO