WI0500186_Laboratory Results_20240425

North Carolina Department of Environmental Quality Division of Water Resources
Raleigh Regional Office 3800 Barrett Drive Raleigh, North Carolina 27609
919.791.4200

April 25, 2024 Ms. Margaret LaRoe 384 Potluck Farm Road Rougemont, NC 27572 Sent Via Email Subject: Geothermal Well Permit Renewal Permit # WI0500186 Summary of Inspection and Sampling on January 4, 2024 Ms. LaRoe: In support of your request for renewal of the above-referenced geothermal well permit, I performed an inspection and collected samples from the well effluent and geothermal system discharge on January 4, 2024. I appreciate your assistance during the inspection. The well is used for geothermal heat exchange only. During the inspection, the geothermal system was in operation. The well and exposed well piping was covered with a fiberglass rock, and the well pad and piping was in good condition, with no leaks observed. The wellhead appeared to be secure. A loose well identification plate was observed (Attachment 1). The influent and effluent piping was not labeled, but the effluent line was immediately apparent, given that it had a separate shutoff to prevent discharge to the well (Attachment 1). Influent (W1-I) and effluent (W1-E) water samples were collected from the sample ports at the well head. Both sample ports were disinfected with a 70-90% isopropyl solution prior to sampling. Samples were collected directly from the sample ports following disinfection. Groundwater quality (temperature, pH, dissolved oxygen, conductivity, and salinity) was measured in the field (Attachment 2). The measurements are relatively similar between the well effluent and the system discharge. Samples were delivered to the Division of Water Resources Laboratory on January 4, 2024. Laboratory analytical results were returned on March 13, 2024 (Attachment 3). Concentrations of the constituents analyzed were below the North Carolina Groundwater Standards (NCAC 15A.02L), with the exception of manganese. Constituent concentrations in influent and effluent samples were essentially the same, and at a similar concentration to that detected during previous sampling in 2018 and 2013, although manganese was below the groundwater standard in the samples collected in 2008, when the system was installed. Samples for ammonia, nitrate/nitrite as nitrogen, phosphorous, total kjeldahl nitrogen, bromide, chloride, fluoride, sulfate, and total dissolved solids are flagged as being out of temperature limits. This occurred because of a power failure in the laboratory, which allowed the samples to rise above the temperature limit. While this is not optimal, it does not appear to have affected the quality of the analytical results, and the concentration of these constituents was similar to those from previous sampling events. Elevated manganese is not unusual in groundwater in North Carolina, and given that this constituent was detected at elevated concentrations during previous sampling events, it does not appear that it represents a concern. Based on the inspection of the well head, and the laboratory analytical results for the samples collected, the continued use of the well for geothermal heat exchange is appropriate. We appreciate your assistance during the inspection, and if you have any questions regarding this report
DocuSign Envelope ID: 7C8AC0FD-A534-4903-B92C-2A8266046A01
North Carolina Department of Environmental Quality Division of Water Resources
Raleigh Regional Office 3800 Barrett Drive Raleigh, North Carolina 27609
919.791.4200
or its conclusions, please contact Michael Hall at [phone] or via email at [e-mail]. Sincerely,
Michael Hall, Regional Supervisor
Water Quality Regional Operations Section
Raleigh Regional Office
Division of Water Resources, NCDEQ Enclosure Attachment 1 – Photographs Attachment 2 – Field Sample Forms Attachment 3 – Laboratory Analytical Reports cc: Laserfiche
DocuSign Envelope ID: 7C8AC0FD-A534-4903-B92C-2A8266046A01
Photograph 1
View of well pad and influent and effluent pipes coming from well head.

Photograph 2
View of sample ports on influent and effluent pipes. Note well
IdenƟficaƟon plate on circuit box.

WI0500186 2024 InspecƟon Photographs
384 Potluck Farm Road/ Person County
DocuSign Envelope ID: 7C8AC0FD-A534-4903-B92C-2A8266046A01
North Carolina Division of Water Resources
Water Sample Collection&Submittal Form
visit ID: Tag
Laboratory(Water Sciences Section) optional) ID
Sm IIIIIIIIIIIIIIIIIIIIIIIIIIIInDescription: 384 Potluck Farm Road W/0500186 Location Code: W3-E IIIIIIIIIIIIIIIIILocationprJ
a AD16477
Priority. Water Matrix:— - Location Type: M,
Date Rec 1/4/2024 13:00County: Person Collector: Michael Hall
Ambient Surface River/Stream Lake Tit
DWR Region: DWR Office:X Routine X Ground Estuary Canal 24•••.-••---
Raleigh Raleigh Regional
based on county) oragencyname) Compliance Waste Stormwater X Influent
Received By:
UuEe
CDC Blank Monitoring Well Filter Blank
River Basin: Neuse m/d/y): OI /0J /2LI O/ /QLj/'Z'-III Emergency Solution EfFluent Trip Blank State Courier
Time(24 hr): QA Foam Field Blank Water Supply Delivery Method: Hand Delivered
Notes:
hegin/end) I •W Method Development I I Other: Other:
Sampling[jC.mP.si,j
Grab Chlorinated Filtered Dissolved analysis:Enter.'DIS"in Sample Secchi tTLrMiv,'.1r,-C):
ature on
Mam•d:
Other ogin file:
De-chlorinated in Field in Field check-boxes for parameters Depth: Depth: t•.-
Lab Comments:
Lot#s/
Collector Coliform Bottle Lot N umber:20220929B/ Nitric Acid Lot N umber:NA3032230/Sulfuric Acid Lot Number:SA3031050
Comments:
Field Parameters(optional):
J ` ^ Dissolved Oxygen Conductivity 2 Salinity
5WaterTemp(°C): 0 Y.-. pH(s.u.):
i q ppm): I 1(jimhos/cm): ND 167 ppt):Preservative:Y
Microbiology Parameters(Chemically Preserved) Preservative Wet Chemistry Parameters(Chemically Preserved) Preservative Metals Parameters Preservative Metals Parameters Can't Preservative
X Coliform:FecalMF_ _- B-C COD:Chemical Oxygen Demand A-D X Aluminum(Al)_; E Thallium(TI) E
X Coliform:Total MF_1 B-C Cyanide,Total A-H-P X Antimony(Sb),E Tin(Sn) E
TOC-Total Organic Carbon A-G Hexavalent Chromium(Cr6+) A-1 (X AfseniC(AS) 1 E Titanium(Ti) E
Microbiology Parameters(N of Chemically Preserved) Preservative Oil and Grease,H EM,Total Recoverable A-D Xl Barium(Ba) E Vanadium(V) E
Alkalinity,as CaCO3,to pH 4.5/8.3 A Phenols,Total Recoverable A-D-M X Beryllium(Be) _,I E X Zinc(Zn)___j E
BOD:Biochemical Oxygen Demand,5-day A X Sulfide A-J ) _Cadmium(Cd) 1 E Mercury1631,low-level
cBOD:Carbonaceous BOD,5-day A Wet Chemistry Parameters(Not Chemically Preserved) Preservative X -Calcium(Ca)) E X Boron(B)_ E
Specific Conductance,at 25°C A X Bromide) A X Chromium(g),Tota_ E [X Hardness,Total as CaCO3-by titrat n`j E
Turbidity A X Chloride 7 A I X Cobalt(Co)) E Organics Parameters Preservative
Other Parameters Preservative'X Fluoride A X C6pp`&(Cu)— E Acid Herbicides A-C
pH y X Sulfate ' A X Iron(Fe) E Organochlorine Pesticides A-C
Nutrients Parameters(Chemically Preserved) Preservative Chlorophyll a A X Lead-(Pb) E Organonitrogen Pesticides A-C
X Ammonia as_N(NH3-N) , A-C-D Color:ADMI A j X Lithium(LIU E Organophosphorus Pesticides A-C
X Nitrate-Nitrite as N(NO3+NO27N) -/A-D Color:Platinum Cobalt A X Magnesium(Mg) } E PCBs(polychlorinated biphenyls) A-C
X _Totai Kjeldahl Nitrogen as N(TKN)_ A-D MBAS(surfactants)A X
J
Manganese(Mn) E Semi-Volatile Organics(BNAs) A-C
X_ Total P_hassphorus as P_(TP) ;' A-D Residue:Total(Total Solids) A X Mercur'y(Hg) E TPH Diesel Range A-C
Nutrients Parameters(N of Chemically Preserved) Preservative Residue:Volatile/Fixed,Total A Molybdenum(Mo) E Volatile Organics(VOA) A-C-F-L
Nitrite as N(NO2-N) A Residue:Suspended(Suspended Solids)A X' Nickel(N.)_ E 1,4-Dioxane C-L
Nitrate as N(NO3-N calculated) Residue:Volatile/Fixed,Suspended A l X Potassium(K) E TPH Gasoline Range A-C-F-L
Orthophosphate as P(PO4)(m ust be field filtered) A-Z X Residue:Total Dissolved(TDS) 't A ! X Selenium(Se)-)E I Perfluorinated compounds(PFAS) A-T
Cyanotoxins Preservative Silica A I X_ Silver-(Ag)_ 1 E Biological Preservative
Microcystin A Tannin&Lignin IX Sodium(Na)_)E Phytoplankton/Algae A-R
Strontium(Sr)E
Preservative Legend(circle above as needed) :(A)cool<-6°C,(B)cool<10"C,(C)0.008%Na2S203[when chlorine is present],(D)H2504 to pH<2,(E)HNO3 to pH<2,(F)HCI to pH<2,(G)HIP04 to pH<2,(H)6N NaOH to pH>10<11,(1)(NH4)2SO4 pH=9.3-9.7,(1)zinc
acetate&NaOH to pH to>9,(L)leave no headspace,(M)ferrous ammonium sulfate[when chlorine is present],(P)ascorbic acid[when chlorine is present],(R)Lugols,(T)Trizma[when chlorine is present],(Y)analyzed within 15 minutes of sample collection,(Z)
filtered in field within 15 m inutes using 0.45um pore size
Required:1)Collector Initials and Date,2)Circle each preservative option utilized next to each parameter. Revision:4/3/2023
DocuSign Envelope ID: 7C8AC0FD-A534-4903-B92C-2A8266046A01
North Carolina Division of Water Resources Visit ID: TagWaterSampleCollection&Submittal FormCDLaboratory(Water Sciences Section) optional) ID
Lt IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIStIIIIILocationDescription: 384 Potluck Farm Road(W10500186) Location Code: Wi-E_ 'I
Priority: Water Matrix: Location Type: M AD16478
County: Person Collector: Michael Hall
TrAmbientSurfaceRiver/Stream Lake Date Rec 1/4/2024 13:00
DWRRegion: DWRO)fice:X Routine X Ground Estuary Canal 2•
Raleigh Raleigh Regional
based on county) or agency name) Compliance Waste Stormwater InfluentUarew1\
COC Blank Monitoring Well Filter Blank
Received By.,
tV
River Basin: Neuse m/d/y): D /104/ 2y ©I / /Emergency Solution X Effluent Trip Blank State Courier
th—irilpTime(24 hr): r 7
CIA Foam Field Blank Water Supply Delivery Method. Hand Delivere
bedNotes:
m/end ` •C0 Gg' ) Method Development Other: Other:
S—pw¢ X Grab Chlorinated Filtered Dissolved analysis:Enter"DIS"In Sample Secchi Temperature on
Method:
Other
check-boxes for parameters Depth: Depth:
Ogin file:
Arrival `C:composit De-chlorinated in Field in Field p p
Lab Comments:
Lot Its/
Collector Coliform Bottle Lot N umber:20220929B/ Nitric Acid Lot N umber:NA3031130/Sulfuric Acid Lot Number:SA3031050
Comments:
Field Parameters(optional): Dissolved Oxygen /
yy Conductivity J 7 Salinity
Water Temp(°C): ),I t 5 pH(s.u.):
O _J 1 Zr L"i/t m mhos/cm): _
2
DPreservative:Y PP ): µPPt)
Microbiology Parame_te_rs_(Chemically Preserved) Preservative Wet Chemistry Parameters(Chemically Preserved) Preservative Metals Parameters Preservative Metals Parameters Can't Preservative
E:
Fecal MF B-C COD:Chemical Oxygen Demand A-D X Aluminum(AI)E Thallium(TI) E
Total MF-- ' B-C Cyanide,Total A-H-P X—Antimony(Sb) l E Tin(Sn) E
talOrganicCarbon A-G Hexavalent Chromium(Cr6+) A-1 X Arsenic(As) E Titanium(Ti) E
Microbiology Parameters(N of Chemically Preserved) Preservative Oil and Grease,H EM,Total Recoverable A-D I X! Barium(Ba) i E Vanadium(V) E
Alkalinity,as CaCO3,to pH 4.5/8.3 A Phenols,Total Recoverable A-D-M X Beryllium(Be) E X Zinc(Zn))E
BOD:Biochemical Oxygen Demand,5-day A X Sulfide__I A-j ;X jCaclmium(Cd)_ E I Imercury 1631,low-level
cBOD:Carbonaceous BOD,5-day A Wet Chemistry Parameters(N of Chemically Preserved) Preservative:X Calcium(Ca) E X Boron(B)E
Specific Conductance,at 25°C A X Bromide_ A X Chromium(Cr),Total -'I E II X Hardness,.Total.as CaCo3-by titration E
Turbidity A X Chloride
J,
I
A X—I Cobalt(Co)- E Organics Parameters Preservative
Other Parameters Preservative.X Fluoride A X` Copper(Cu) E Acid Herbicides A-C
pH Y X Sulfate A X—]ron(Fe) E Organochlorine Pesticides A-C
Nutrients Parameters(Chemically Preserved) Preservative Chlorophyll a A X Lead(Pb} E Organonitrogen Pesticides A-C
X Ammonia as N(NH3-N)_ A-C-D Color:ADMI A X Lithium(Li) E Organophosphorus Pesticides A-C
X Nitrate-Nitrite as N(NO3+NO2-N) A-D Color:Platinum Cobalt A I X Magnesium_(Mg) _. E PCBs(polychlorinated biphenyls) A-C
X _ Total Kjeldahl.Nitrogen as N(TKN) A-D MBAS(surfactants)A X Manganese(Mn) _ I E Semi-Volatile Organics(BNAs) A-C
X_Total Phosphorus as P-(TP) A-D Residue:Total(Total Solids) A f X Mercury(Hg) E TPH Diesel Range A C
Nutrients Parameters(N of Chemically Preserved) Preservative Residue:Volatile/Fixed,Total A Molybdenum(Mo) E Volatile Organics(VOA)
Nitrite as N(NO2-N) A Residue:Suspended(Suspended Solids)A r X Nickel(Ni) _ E 1,4-Dioxane
Nitrate as N(NO3-N calculated) Residue:Volatile/Fixed,Suspended A X` Potassium(K) E TPH Gasoline Range
Orthophosphate as P(PO4)(m ust be field filtered) A-Z X Residue:Total Dissolved(TDS)__/ A X Selenium(Se) E I Perfluorinated Compounds(PFAS)
Cyanotoxins Preservative I Silica A (X Silver(Ag) E Biological Preservative
Microcystin A I Tannin&Lignin E Sodium(Na) EE Phytoplankton/Algae A-R
Strontium(Sr)
Preservative Legend(circle above as needed) :(A)cool 56°C,(B)cool<30"C,(C)0.008%NazSz03[when chlorine is present],(D)H2SO4 to pH<2,(E)HNO3 to pH<2,(F)HCI to pH<2,(G)H3PO4 to pH<2,(H)6N NaOH to pH>10<11,(I)(NH4)2SO4 pH=9.3-9.7,(J)zinc
acetate&NaOH to pH to>9,(L)leave no headspace,(M)ferrous ammonium sulfate[when chlorine is present],(P)ascorbic acid[when chlorine is present],(R)Lugols,(T)Trizma[when chlorine is present],(Y)analyzed within 15 minutes of sample collection,(Z)
filtered in field within 15 in inutes using 0.45um pore size
Required:1)Collector Initials and Date,2)Circle each preservative option utilized next to each parameter. Revision:4/3/2023
DocuSign Envelope ID: 7C8AC0FD-A534-4903-B92C-2A8266046A01
AD16477 North Carolina Division of Water Resources Water Sciences Section Laboratory Results
Loe. Descr.: 384 Potluck Farm Road Sample ID: AD16477
County: Person Collector: M HALL VisitlD PO Number#
Region: Raleigh Report To RRO Location ID: W1 E Date Received: 01/04/2024
River Basin NEU Collect Date: 01/04/2024 Priority ROUTINE Time Received: 13:00
Emergency Collect Time: 12:00 Sample Matrix: GROUNDWATER Labworks LoginlD TASCENZO1
COC Yes/No Sample Depth Loe. Type: Influent Delivery Method Hand Delivered
Sampling Method: Grab Latitude Longitude: Final Report Date: 2/12/24
Report Print Date: 02/12/2024
Final Report
If this report is labeled preliminary report, the results have not been validated. Do not use for Regulatory purposes.
Result/ Units Method Analysis
CAS# Analyte Name PQL Qualifier Reference Date Validated b)'
LAB
Sample temperature at receipt by lab 2.6 'C 1/4/24 MSWIFT
MIC
Coliform, MF Fecal in liquid 1 B2 CFU/100ml SM 9222 D-1997 1/4/24 JJURGEVICH
Coliform, MF Total in liquid 1 B2 CFU/100ml SM 9222 B-1997 1/4/24 JJURGEVICH
NUT
7664-41-7 NH3 as N in liquid 0.05 0.05 U,J8 mg/L as N EPA 350.1 REV 2 1/17/24 ALWILLIAMS
E701177 NO2+NO3 as N in liquid 0.03 0.03 U,J8 mg/L as N EPA 353.2 REV 2 1/17/24 ALWILLIAMS
7723-14-0 Phosphorus_total as P in liquid 0.03 0.03 U,J8 mg/L as P EPA 365.1 REV 2 1/23/24 ALWILLIAMS
TKN_N Total Kjeldahl N as N in liquid 0.4 0.4 U,J8 mg/L as N EPA 351.2 REV 2 1/17/24 ALWILLIAMS
WET
24959-67-9 Bromide 0.4 0.4 U,J8 mg/L EPA 300.0 rev2.1 1/12/24 ALWILLIAMS
16887-00-6 Chloride 1 7.4 JS mg/L EPA 300.0 rev2.1 1/12/24 ALWILLIAMS
16984-48-8 Fluoride 0.4 0.4 U,J8 mg/L EPA 300.0 rev2.1 1/12/24 ALWILLIAMS
14808-79-8 Sulfate 2 12 JS mg/L EPA 300.0 rev2.1 1/12/24 ALWILLIAMS
18496-25-8 Sulfide in liquid 0.1 0.1 U,J6,J mg/L SM4500-S2-D-2000 1/11/24 ALWILLIAMS
Total Dissolved Solids in liquid 12.5 226 JS mg/L SM 2540 C-1997 1/9/24 ALWILLIAMS
MET
7440-22-4 Ag by ICPMS 1.0 1.0 U ug/L EPA 200.8 Rev5.4 1/29/24 JJURGEVICH
7429-90-5 Al by ICP 50 62 ug/L EPA 200. 7 Rev4.4 1/26/24 JJURGEVICH
7440-36-0 Antimony by ICPMS 10 10 U ug/L EPA 200.8 Rev5.4 1/29/24 JJURGEVICH
7440-38-2 As by ICPMS 2.0 2.0 U ug/L EPA 200.8 Rev5.4 1/29/24 JJURGEVICH
7429-90-5 B by ICP 50 50 U ug/L EPA 200. 7 Rev4.4 1/26/24 JJURGEVICH
7440-38-3 Ba by ICP 10 160 ug/L EPA 200. 7 Rev4.4 1/26/24 JJURGEVICH
7440-41-7 Be by ICP 5.0 5.0 U ug/L EPA 200. 7 Rev4.4 1/26/24 JJURGEVICH
7440-70-2 Ca by ICP 0.20 58 P mg/L EPA 200. 7 Rev4.4 1/26/24 JJURGEVICH
7440-43-9 Cd by ICPMS 0.50 0.50 U ug/L EPA 200.8 Rev5.4 1/29/24 JJURGEVICH
7440-48-4 Cobalt by ICP 50 50 U ug/L EPA 200. 7 Rev4.4 1/26/24 JJURGEVICH
7440-47-3 Cr by ICPMS 5.0 5.0 U ug/L EPA 200.8 Rev5.4 1/29/24 JJURGEVICH
7440-50-8 Cu by ICPMS 2.0 5.1 ug/L EPA 200.8 Rev5.4 1/29/24 JJURGEVICH
7439-89-6 Fe by ICP 50 50 U ug/L EPA 200. 7 Rev4.4 1/26/24 JJURGEVICH
Hardness by Calculation 1.0 170 mg/L SM 2340B-1997 2/2/24 JJURGEVICH
7439-97-6 Hg 245.1 0.20 0.20 U ug/L EPA 245.1 Rev3 1/23/24 JJURGEVICH
7440-09-7 K by ICP 0.10 0.60 mg/L EPA 200. 7 Rev4.4 1/26/24 JJURGEVICH
WSS Chemistry Laboratory» 1623 Mail Service Center, Raleigh, NC 27699-1623 [phone]
"Not Detected" or "U" does not indicate the sample is analyte free but that the analyte is not detected at or above the PQL.
Page 1 of 3
DocuSign Envelope ID: 7C8AC0FD-A534-4903-B92C-2A8266046A01
DocuSign Envelope ID: 7C8AC0FD-A534-4903-B92C-2A8266046A01
DocuSign Envelope ID: 7C8AC0FD-A534-4903-B92C-2A8266046A01
AD16478 North Carolina Division of Water Resources Water Sciences Section Laboratory Results
Loe. Descr.: 384 Potluck Farm Road Sample ID: AD1647S
County: Person Collector: M HALL VisitlD PO Number#
Region: Raleigh Report To RRO Location ID: W1 E Date Received: 01/04/2024
River Basin NEU Collect Date: 01/04/2024 Priority ROUTINE Time Received: 13:00
Emergency Collect Time: 12:15 Sample Matrix: GROUNDWATER Labworks LoginlD TASCENZO1
COC Yes/No Sample Depth Loe. Type: Effluent Delivery Method Hand Delivered
Sampling Method: Grab Latitude Longitude: Final Report Date: 2/12/24
Report Print Date: 02/12/2024
Final Report
If this report is labeled preliminary report, the results have not been validated. Do not use for Regulatory purposes.
Result/ Units Method Analysis
CAS# Analyte Name PQL Qualifier Reference Date Validated b)'
LAB
Sample temperature at receipt by lab 2.6 'C 1/4/24 MSWIFT
MIC
Coliform, MF Fecal in liquid 1 B2 CFU/100ml SM 9222 D-1997 1/4/24 JJURGEVICH
Coliform, MF Total in liquid 1 B2 CFU/100ml SM 9222 B-1997 1/4/24 JJURGEVICH
NUT
7664-41-7 NH3 as N in liquid 0.05 0.05 U,JS mg/L as N EPA 350.1 REV 2 1/17/24 ALWILLIAMS
E701177 NO2+NO3 as N in liquid 0.03 0.03 U,JS mg/L as N EPA 353.2 REV 2 1/17/24 ALWILLIAMS
7723-14-0 Phosphorus_total as P in liquid 0.03 0.03 U,JS mg/L as P EPA 365.1 REV 2 1/23/24 ALWILLIAMS
TKN_N Total Kjeldahl N as N in liquid 0.4 0.4 U,JS mg/L as N EPA 351.2 REV 2 1/17/24 ALWILLIAMS
WET
24959-67-9 Bromide 0.4 0.4 U,JS mg/L EPA 300.0 rev2.1 1/12/24 ALWILLIAMS
16887-00-6 Chloride 1 7.5 JS mg/L EPA 300.0 rev2.1 1/12/24 ALWILLIAMS
16984-48-8 Fluoride 0.4 0.4 U,JS mg/L EPA 300.0 rev2.1 1/12/24 ALWILLIAMS
14808-79-8 Sulfate 2 12 JS mg/L EPA 300.0 rev2.1 1/12/24 ALWILLIAMS
18496-25-8 Sulfide in liquid 0.1 0.1 U,J6,J mg/L SM4500-S2-D-2000 1/11/24 ALWILLIAMS
Total Dissolved Solids in liquid 12.5 230 JS mg/L SM 2540 C-1997 1/9/24 ALWILLIAMS
MET
7440-22-4 Ag by ICPMS 1.0 1.0 U ug/L EPA 200.8 Rev5.4 1/29/24 JJURGEVICH
7429-90-5 Al by ICP 50 67 ug/L EPA 200. 7 Rev4.4 1/26/24 JJURGEVICH
7440-36-0 Antimony by ICPMS 10 10 U ug/L EPA 200.8 Rev5.4 1/29/24 JJURGEVICH
7440-38-2 As by ICPMS 2.0 2.0 U ug/L EPA 200.8 Rev5.4 1/29/24 JJURGEVICH
7429-90-5 B by ICP 50 50 U ug/L EPA 200. 7 Rev4.4 1/26/24 JJURGEVICH
7440-38-3 Ba by ICP 10 160 ug/L EPA 200. 7 Rev4.4 1/26/24 JJURGEVICH
7440-41-7 Be by ICP 5.0 5.0 U ug/L EPA 200. 7 Rev4.4 1/26/24 JJURGEVICH
7440-70-2 Ca by ICP 0.20 57 P mg/L EPA 200. 7 Rev4.4 1/26/24 JJURGEVICH
7440-43-9 Cd by ICPMS 0.50 0.50 U ug/L EPA 200.8 Rev5.4 1/29/24 JJURGEVICH
7440-48-4 Cobalt by ICP 50 50 U ug/L EPA 200. 7 Rev4.4 1/26/24 JJURGEVICH
7440-47-3 Cr by ICPMS 5.0 5.0 U ug/L EPA 200.8 Rev5.4 1/29/24 JJURGEVICH
7440-50-8 Cu by ICPMS 2.0 5.5 ug/L EPA 200.8 Rev5.4 1/29/24 JJURGEVICH
7439-89-6 Fe by ICP 50 50 U ug/L EPA 200. 7 Rev4.4 1/26/24 JJURGEVICH
Hardness by Calculation 1.0 170 mg/L SM 2340B-1997 2/2/24 JJURGEVICH
7439-97-6 Hg 245.1 0.20 0.20 U ug/L EPA 245.1 Rev3 1/23/24 JJURGEVICH
7440-09-7 K by ICP 0.10 0.61 mg/L EPA 200. 7 Rev4.4 1/26/24 JJURGEVICH
WSS Chemistry Laboratory» 1623 Mail Service Center, Raleigh, NC 27699-1623 [phone]
"Not Detected" or "U" does not indicate the sample is analyte free but that the analyte is not detected at or above the PQL.
Page 1 of 3
DocuSign Envelope ID: 7C8AC0FD-A534-4903-B92C-2A8266046A01
DocuSign Envelope ID: 7C8AC0FD-A534-4903-B92C-2A8266046A01
DocuSign Envelope ID: 7C8AC0FD-A534-4903-B92C-2A8266046A01