WI0500042_Compliance Report_20240219

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

February 19, 2024 Mr. Ben Adler and Ms. Charlotte Davenport 1230 Mordecai Drive Raleigh, NC 27604 Sent Via Email Subject: Geothermal Well Renewal Permit # WI0500042 Summary of Inspection and Sampling on January 3, 2024 Mr. Adler/Ms. Davenport: In support of your request for renewal of the above-referenced geothermal well permit, Michael Hall from the Division of Water Resources Performed an inspection and collected samples from the well effluent and geothermal system discharge on January 3, 2024. The permittee, Ben Adler, was present during the inspection, and identified the location of the well. 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, had clearly been replaced since the previous inspection, and was in good condition, with no leaks observed. The wellhead appeared to be secure. No well identification plate was observed. The influent and effluent piping was not labeled, but the inspector labeled them in the field prior to taking photographs (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% 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 3, 2024. Laboratory analytical results were returned on February 13, 2024 (Attachment 3). Concentrations of the constituents analyzed were below the North Carolina Groundwater Standards (NCAC 15A.02L). The concentration of the constituents analyzed were relatively similar between the influent and effluent samples, with the exception of iron, which was slightly higher in the effluent sample. Samples for nitrate/nitrite as 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 concentration of these constituents was similar to those from previous sampling events. Neither the field measurements or the laboratory results suggest a concern regarding groundwater quality. The slight increase in the concentration of iron in the effluent from the system may indicate minor corrosion of metal components, but does not represent an impact to groundwater. 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 or its conclusions, please contact Michael Hall at [phone] or via email at [e-mail].
DocuSign Envelope ID: 04BC8561-69D6-41D5-A96C-9E9CC6D44979
North Carolina Department of Environmental Quality Division of Water Resources
Raleigh Regional Office 3800 Barrett Drive Raleigh, North Carolina 27609
919.791.4200
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: 04BC8561-69D6-41D5-A96C-9E9CC6D44979
Photograph 1
View of influent and effluent pipes coming from well head.

Photograph 2
View of sample ports on influent and effluent pipes’

WI0500042 2024 InspecƟon Photographs
1230 Mordecai Drive/ Wake County
DocuSign Envelope ID: 04BC8561-69D6-41D5-A96C-9E9CC6D44979
DocuSign Envelope ID: 04BC8561-69D6-41D5-A96C-9E9CC6D44979
DocuSign Envelope ID: 04BC8561-69D6-41D5-A96C-9E9CC6D44979
PO Number #
Loc. Descr.:1230 MORDICAI
Loc. Type:Influent
Collector:M HALL
Collect Date:01/03/2024
Collect Time:09:50
Date Received:01/03/2024
Time Received:10:45
Location ID:W1_I
County:Wake
Region:Raleigh
Labworks LoginID TASCENZO1Sample Matrix:GROUNDWATER
Report Print Date:
North Carolina Division of Water Resources Water Sciences Section Laboratory Results
VisitID
Sample Depth
RROReport To
NEURiver Basin
02/12/2024
Emergency
COC Yes/No
Sample ID:AD16428
2/12/24Final Report Date:
Final Report
If this report is labeled preliminary report, the results have not been validated. Do not use for Regulatory purposes.
Hand DeliveredDelivery Method
ROUTINEPriority
AD16428
Analysis
Date
Method
Reference
Result/
QualifierPQLAnalyte NameCAS #Units Validated by
LAB
MSWIFT°CSample temperature at receipt by lab 1/3/241.6
MIC
SM 9222 D-1997 JJURGEVICHCFU/100mlB2Coliform, MF Fecal in liquid 1/3/2411
SM 9222 B-1997 JJURGEVICHCFU/100mlB2Coliform, MF Total in liquid 1/3/2411
NUT
EPA 353.2 REV 2 ALWILLIAMSmg/L as NJ8,PNO2+NO3 as N in liquidE701177 1/17/240.15 2.4
WET
EPA 300.0 rev2.1 ALWILLIAMSmg/LU,J8Bromide24959-67-9 1/12/240.4 0.4
EPA 300.0 rev2.1 ALWILLIAMSmg/LJ8Chloride16887-00-6 1/12/24129
EPA 300.0 rev2.1 ALWILLIAMSmg/LU,J8Fluoride16984-48-8 1/12/240.4 0.4
EPA 300.0 rev2.1 ALWILLIAMSmg/LJ8Sulfate14808-79-8 1/12/24224
SM 2540 C-1997 ALWILLIAMSmg/LJ8Total Dissolved Solids in liquid 1/9/2412.5 207
MET
EPA 200.7 Rev4.4 JJURGEVICHug/LAl by ICP7429-90-5 1/25/245051
EPA 200.7 Rev4.4 JJURGEVICHmg/LCa by ICP7440-70-2 1/25/240.10 32
EPA 200.8 Rev5.4 JJURGEVICHug/LUCd by ICPMS7440-43-9 1/26/240.50 0.50
EPA 200.8 Rev5.4 JJURGEVICHug/LUCr by ICPMS7440-47-3 1/26/245.0 5.0
EPA 200.8 Rev5.4 JJURGEVICHug/LPCu by ICPMS7440-50-8 1/26/2420420
EPA 200.7 Rev4.4 JJURGEVICHug/LUFe by ICP7439-89-6 1/25/245050
EPA 200.7 Rev4.4 JJURGEVICHmg/LK by ICP7440-09-7 1/25/240.10 3.6
EPA 200.7 Rev4.4 JJURGEVICHmg/LMg by ICP7439-95-4 1/25/240.10 9.9
EPA 200.7 Rev4.4 JJURGEVICHug/LUMn by ICP7439-96-5 1/25/241010
EPA 200.7 Rev4.4 JJURGEVICHmg/LNa by ICP7440-23-5 1/25/240.10 15
EPA 200.8 Rev5.4 JJURGEVICHug/LNi by ICPMS7440-02-0 1/26/242.0 42
EPA 200.8 Rev5.4 JJURGEVICHug/LUPb by ICPMS7439-92-1 1/26/242.0 2.0
EPA 200.8 Rev5.4 JJURGEVICHug/LZn by ICPMS7440-66-6 1/26/241074
WSS Chemistry Laboratory>> 1623 Mail Service Center, Raleigh, NC 27699-1623 [phone]
Page 1 of 3
"Not Detected" or "U" does not indicate the sample is analyte free but that the analyte is not detected at or above the PQL.
DocuSign Envelope ID: 04BC8561-69D6-41D5-A96C-9E9CC6D44979
AD16428Sample ID:
NC DWR Laboratory Section Results/Sample Comments/Qualifier Definitions
CAS #Analyte Name PQL Result/
Qualifier Units
Method
Reference
Analysis
Date Validated by
MIC:Fecal Coliform-B2-Counts from all filters = 0.
MIC:Total Coliform-B2-Counts from all filters = 0.
WET:TDS-J8-Estimated-Sample temperature exceeded criteria during
storage due to building power shut down.
WET:IC-J8-Estimated-Sample temperature exceeded criteria during storage
due to building power shut down.
NUT:NO3NO2-J8-Estimated-sample temperature exceeded criteria during
storage due to a planned power outage.
Sample Comments
NCDEQ-WSS-Chemistry Lab Data Qualifiers
A1 The reported value is an average, where at least one result is qualified with a “U”. The PQL is used for the qualified result(S) to calculate the average.
B1 Coliform-Countable membranes with less than 20 colonies. Reported value is estimated or is a total of the counts on all filters reported per 100 ml.
B2 Coliform-Counts from all filters were zero.
B3 Coliform-Countable membranes with more than 60 or 80 colonies. The value reported is calculated using the count from the smallest volume filtered and reported as a greater than ">" value.
B4 Coliform-Filters have counts of both >60 or 80 and <20. Reported value is estimated or is a total of the counts on all filters reported per 100 ml.
B5 Coliform-Too many colonies were present; too numerous to count (TNTC). TNTC is generally defined as >150 colonies.
B6 Coliform-Estimated Value. Blank contamination evident.
B7 Coliform-Many non-coliform or non-enterococcus colonies or interfering non-coliform or non-enterococcus growth present. In this competitive situation, the reported value may under-represent actual density.
BB1 MPN-No wells or tubes gave a positive reaction. Value based upon the appropriate MPN Index and reported as a less than “<” value.
BB2 MPN-All wells or tubes gave positive reactions. Value based upon the MPN Index and reported as a greater than “>” value.
C Total residual chlorine was present in sample upon receipt in the laboratory; value is estimated.
G1 BOD-The dissolved oxygen (DO) depletion of the dilution water blank exceeded 0.2 mg/L.
G2 BOD-The bacterial seed controls did not meet the requirement of a DO depletion of at least 2.0 mg/L and/or a DO residual of at least 1.0 mg/L.
G3 BOD-No sample dilution met the requirement of a DO depletion of at least 2.0 mg/L and/or a DO residual of at least 1.0 mg/L.
G4 BOD-Evidence of toxicity. This is generally characterized by a significant increase in the BOD value as the sample concentration decreases. The reported value is calculated from the highest dilution representing the maximum loading potential and
G5 BOD-The glucose/ glutamic acid standard exceeded the range of 198 ± 30.5 mg/L.
G7 BOD-Less than 1 mg/L DO remained for all dilutions set. The reported value is an estimated greater than value and is calculated for the dilution using the least amount of sample.
G8 BOD-Oxygen usage is less than 2 mg/L for all dilutions set. The reported value is an estimated less than value and is calculated for the dilution using the most amount of sample.
G9 BOD-The DO depletion of the dilution water blank produced a negative value.
J1 Surrogate recovery limits have been exceeded.
J10 Unidentified peak; estimated value.
WSS Chemistry Laboratory>> 1623 Mail Service Center, Raleigh, NC 27699-1623 [phone]
Page 2 of 3
"Not Detected" or "U" does not indicate the sample is analyte free but that the analyte is not detected at or above the PQL.
DocuSign Envelope ID: 04BC8561-69D6-41D5-A96C-9E9CC6D44979
AD16428Sample ID:
NC DWR Laboratory Section Results/Sample Comments/Qualifier Definitions
CAS #Analyte Name PQL Result/
Qualifier Units
Method
Reference
Analysis
Date Validated by
J11 The reported value is determined by a one-point estimation rather than against a regression equation. The estimated concentration is less than the laboratory practical quantitation limit and greater than the instrument noise level. This code is used when
J12 The calibration verification did not meet the calibration acceptance criterion for field parameters.
J2 The reported value failed to meet the established quality control criteria for either precision or accuracy.
J3 The sample matrix interfered with the ability to make any accurate determination.
J4 The data is questionable because of improper laboratory or field protocols (e.g., composite sample was collected instead of grab, plastic instead of glass container, the sample's extraction batch did not include a LCS/MS/MSD, etc.).
J5 Temperature limits exceeded (samples frozen or >6°C) during transport or not verifiable (e.g., no temperature blank provided): non-reportable for NPDES compliance monitoring.
J6 The laboratory analysis was from an unpreserved or improperly chemically preserved sample. The data may not be accurate.
J7 This qualifier is used to identify analyte concentration exceeding the upper calibration range of the analytical instrument/method. The reported value should be considered estimated.
J8 Temperature limits exceeded (samples frozen or >6ºC) during storage, the data may not be accurate.
J9 The reported value is determined by a one-point estimation rather than against a regression equation. The estimated concentration is less than the laboratory practical quantitation limit and greater than the laboratory method detection limit.
M Sample and duplicate results are "out of control". The sample is non-homogenous (e.g., VOA soil). The reported value is the lower value of duplicate analyses of a sample.
N1 Presumptive evidence and estimated value. The component has been tentatively identified base on mass spectral library.
N2 There is an indication that the analyte is present, but quality control requirements for confirmation were not met (i.e., presence of analyte was not confirmed by alternate procedures).
N3 This code shall be used if the level is too low to permit accurate quantification, but the estimated concentration is less than the laboratory practical quantitation limit and greater than the laboratory method detection limit. This code is not routinely
N4 This code shall be used if the level is too low to permit accurate quantification, but the estimated concentration is less than the laboratory practical quantitation limit and greater than the instrument noise level. This code is used when an MDL has not
N5 The component has been tentatively identified based on a retention time standard.
P Elevated PQL* due to matrix interference and/or sample dilution.
Q1 Holding time exceeded prior to receipt by lab.
Q2 Holding time exceeded following receipt by lab.
S Not enough sample provided to prepare and/or analyze a method-required matrix spike (MS) and/or matrix spike duplicate (MSD).
U Indicates that the analyte was analyzed for but not detected above the reported practical quantitation limit*. The number value reported with the "U" qualifier is equal to the laboratory's practical quantitation limit*.
U, J6 The laboratory analysis was from an unpreserved or improperly chemically preserved sample. The data may not be accurate.
UU Indicates that the analyte was not detected by a screen analysis. The number value was determined by a one-point estimation at the PQL.
V Indicates the analyte was detected in both the sample and the associated method blank. Note: The value in the blank shall not be subtracted from the associated samples.
X1 Sample not screened for this compound.
X2 Sampled, but analysis lost or not performed-field error.
X3 Sampled, but analysis lost or not performed-lab error.
Y Elevated PQL* due to insufficient sample size.
Z1 Inability to analyze the sample.
Z2 Questions concerning data reliability.
J13 Standards used for this analyte are from an uncertified source. These are the only standards currently available for the analyte.
WSS Chemistry Laboratory>> 1623 Mail Service Center, Raleigh, NC 27699-1623 [phone]
Page 3 of 3
"Not Detected" or "U" does not indicate the sample is analyte free but that the analyte is not detected at or above the PQL.
DocuSign Envelope ID: 04BC8561-69D6-41D5-A96C-9E9CC6D44979
PO Number #
Loc. Descr.:1230 MORDECAI
Loc. Type:Effluent
Collector:M HALL
Collect Date:01/03/2024
Collect Time:10:20
Date Received:01/03/2024
Time Received:10:45
Location ID:W1_E
County:Wake
Region:Raleigh
Labworks LoginID TASCENZO1Sample Matrix:GROUNDWATER
Report Print Date:
North Carolina Division of Water Resources Water Sciences Section Laboratory Results
VisitID
Sample Depth
RROReport To
NEURiver Basin
02/12/2024
Emergency
COC Yes/No
Sample ID:AD16429
2/12/24Final Report Date:
Final Report
If this report is labeled preliminary report, the results have not been validated. Do not use for Regulatory purposes.
Hand DeliveredDelivery Method
ROUTINEPriority
AD16429
Analysis
Date
Method
Reference
Result/
QualifierPQLAnalyte NameCAS #Units Validated by
LAB
MSWIFT°CSample temperature at receipt by lab 1/3/241.6
MIC
SM 9222 D-1997 JJURGEVICHCFU/100mlB2Coliform, MF Fecal in liquid 1/3/2411
SM 9222 B-1997 JJURGEVICHCFU/100mlB2Coliform, MF Total in liquid 1/3/2411
NUT
EPA 353.2 REV 2 ALWILLIAMSmg/L as NJ8,PNO2+NO3 as N in liquidE701177 1/17/240.15 2.4
WET
EPA 300.0 rev2.1 ALWILLIAMSmg/LU,J8Bromide24959-67-9 1/12/240.4 0.4
EPA 300.0 rev2.1 ALWILLIAMSmg/LJ8Chloride16887-00-6 1/12/24129
EPA 300.0 rev2.1 ALWILLIAMSmg/LU,J8Fluoride16984-48-8 1/12/240.4 0.4
EPA 300.0 rev2.1 ALWILLIAMSmg/LJ8Sulfate14808-79-8 1/12/24224
SM 2540 C-1997 ALWILLIAMSmg/LJ8Total Dissolved Solids in liquid 1/9/2412.5 204
MET
EPA 200.7 Rev4.4 JJURGEVICHug/LAl by ICP7429-90-5 1/25/245082
EPA 200.7 Rev4.4 JJURGEVICHmg/LCa by ICP7440-70-2 1/25/240.10 31
EPA 200.8 Rev5.4 JJURGEVICHug/LUCd by ICPMS7440-43-9 1/26/240.50 0.50
EPA 200.8 Rev5.4 JJURGEVICHug/LUCr by ICPMS7440-47-3 1/26/245.0 5.0
EPA 200.8 Rev5.4 JJURGEVICHug/LPCu by ICPMS7440-50-8 1/26/2420430
EPA 200.7 Rev4.4 JJURGEVICHug/LFe by ICP7439-89-6 1/25/2450110
EPA 200.7 Rev4.4 JJURGEVICHmg/LK by ICP7440-09-7 1/25/240.10 3.6
EPA 200.7 Rev4.4 JJURGEVICHmg/LMg by ICP7439-95-4 1/25/240.10 9.8
EPA 200.7 Rev4.4 JJURGEVICHug/LUMn by ICP7439-96-5 1/25/241010
EPA 200.7 Rev4.4 JJURGEVICHmg/LNa by ICP7440-23-5 1/25/240.10 15
EPA 200.8 Rev5.4 JJURGEVICHug/LNi by ICPMS7440-02-0 1/26/242.0 43
EPA 200.8 Rev5.4 JJURGEVICHug/LUPb by ICPMS7439-92-1 1/26/242.0 2.0
EPA 200.8 Rev5.4 JJURGEVICHug/LZn by ICPMS7440-66-6 1/26/241023
WSS Chemistry Laboratory>> 1623 Mail Service Center, Raleigh, NC 27699-1623 [phone]
Page 1 of 3
"Not Detected" or "U" does not indicate the sample is analyte free but that the analyte is not detected at or above the PQL.
DocuSign Envelope ID: 04BC8561-69D6-41D5-A96C-9E9CC6D44979
AD16429Sample ID:
NC DWR Laboratory Section Results/Sample Comments/Qualifier Definitions
CAS #Analyte Name PQL Result/
Qualifier Units
Method
Reference
Analysis
Date Validated by
MIC:Fecal Coliform-B2-Counts from all filters = 0.
MIC:Total Coliform-B2-Counts from all filters = 0.
WET:TDS-J8-Estimated-Sample temperature exceeded criteria during
storage due to building power shut down.
WET:IC-J8-Estimated-Sample temperature exceeded criteria during storage
due to building power shut down.
NUT:NO3NO2-J8-Estimated-sample temperature exceeded criteria during
storage due to a planned power outage.
Sample Comments
NCDEQ-WSS-Chemistry Lab Data Qualifiers
A1 The reported value is an average, where at least one result is qualified with a “U”. The PQL is used for the qualified result(S) to calculate the average.
B1 Coliform-Countable membranes with less than 20 colonies. Reported value is estimated or is a total of the counts on all filters reported per 100 ml.
B2 Coliform-Counts from all filters were zero.
B3 Coliform-Countable membranes with more than 60 or 80 colonies. The value reported is calculated using the count from the smallest volume filtered and reported as a greater than ">" value.
B4 Coliform-Filters have counts of both >60 or 80 and <20. Reported value is estimated or is a total of the counts on all filters reported per 100 ml.
B5 Coliform-Too many colonies were present; too numerous to count (TNTC). TNTC is generally defined as >150 colonies.
B6 Coliform-Estimated Value. Blank contamination evident.
B7 Coliform-Many non-coliform or non-enterococcus colonies or interfering non-coliform or non-enterococcus growth present. In this competitive situation, the reported value may under-represent actual density.
BB1 MPN-No wells or tubes gave a positive reaction. Value based upon the appropriate MPN Index and reported as a less than “<” value.
BB2 MPN-All wells or tubes gave positive reactions. Value based upon the MPN Index and reported as a greater than “>” value.
C Total residual chlorine was present in sample upon receipt in the laboratory; value is estimated.
G1 BOD-The dissolved oxygen (DO) depletion of the dilution water blank exceeded 0.2 mg/L.
G2 BOD-The bacterial seed controls did not meet the requirement of a DO depletion of at least 2.0 mg/L and/or a DO residual of at least 1.0 mg/L.
G3 BOD-No sample dilution met the requirement of a DO depletion of at least 2.0 mg/L and/or a DO residual of at least 1.0 mg/L.
G4 BOD-Evidence of toxicity. This is generally characterized by a significant increase in the BOD value as the sample concentration decreases. The reported value is calculated from the highest dilution representing the maximum loading potential and
G5 BOD-The glucose/ glutamic acid standard exceeded the range of 198 ± 30.5 mg/L.
G7 BOD-Less than 1 mg/L DO remained for all dilutions set. The reported value is an estimated greater than value and is calculated for the dilution using the least amount of sample.
G8 BOD-Oxygen usage is less than 2 mg/L for all dilutions set. The reported value is an estimated less than value and is calculated for the dilution using the most amount of sample.
G9 BOD-The DO depletion of the dilution water blank produced a negative value.
J1 Surrogate recovery limits have been exceeded.
J10 Unidentified peak; estimated value.
WSS Chemistry Laboratory>> 1623 Mail Service Center, Raleigh, NC 27699-1623 [phone]
Page 2 of 3
"Not Detected" or "U" does not indicate the sample is analyte free but that the analyte is not detected at or above the PQL.
DocuSign Envelope ID: 04BC8561-69D6-41D5-A96C-9E9CC6D44979
AD16429Sample ID:
NC DWR Laboratory Section Results/Sample Comments/Qualifier Definitions
CAS #Analyte Name PQL Result/
Qualifier Units
Method
Reference
Analysis
Date Validated by
J11 The reported value is determined by a one-point estimation rather than against a regression equation. The estimated concentration is less than the laboratory practical quantitation limit and greater than the instrument noise level. This code is used when
J12 The calibration verification did not meet the calibration acceptance criterion for field parameters.
J2 The reported value failed to meet the established quality control criteria for either precision or accuracy.
J3 The sample matrix interfered with the ability to make any accurate determination.
J4 The data is questionable because of improper laboratory or field protocols (e.g., composite sample was collected instead of grab, plastic instead of glass container, the sample's extraction batch did not include a LCS/MS/MSD, etc.).
J5 Temperature limits exceeded (samples frozen or >6°C) during transport or not verifiable (e.g., no temperature blank provided): non-reportable for NPDES compliance monitoring.
J6 The laboratory analysis was from an unpreserved or improperly chemically preserved sample. The data may not be accurate.
J7 This qualifier is used to identify analyte concentration exceeding the upper calibration range of the analytical instrument/method. The reported value should be considered estimated.
J8 Temperature limits exceeded (samples frozen or >6ºC) during storage, the data may not be accurate.
J9 The reported value is determined by a one-point estimation rather than against a regression equation. The estimated concentration is less than the laboratory practical quantitation limit and greater than the laboratory method detection limit.
M Sample and duplicate results are "out of control". The sample is non-homogenous (e.g., VOA soil). The reported value is the lower value of duplicate analyses of a sample.
N1 Presumptive evidence and estimated value. The component has been tentatively identified base on mass spectral library.
N2 There is an indication that the analyte is present, but quality control requirements for confirmation were not met (i.e., presence of analyte was not confirmed by alternate procedures).
N3 This code shall be used if the level is too low to permit accurate quantification, but the estimated concentration is less than the laboratory practical quantitation limit and greater than the laboratory method detection limit. This code is not routinely
N4 This code shall be used if the level is too low to permit accurate quantification, but the estimated concentration is less than the laboratory practical quantitation limit and greater than the instrument noise level. This code is used when an MDL has not
N5 The component has been tentatively identified based on a retention time standard.
P Elevated PQL* due to matrix interference and/or sample dilution.
Q1 Holding time exceeded prior to receipt by lab.
Q2 Holding time exceeded following receipt by lab.
S Not enough sample provided to prepare and/or analyze a method-required matrix spike (MS) and/or matrix spike duplicate (MSD).
U Indicates that the analyte was analyzed for but not detected above the reported practical quantitation limit*. The number value reported with the "U" qualifier is equal to the laboratory's practical quantitation limit*.
U, J6 The laboratory analysis was from an unpreserved or improperly chemically preserved sample. The data may not be accurate.
UU Indicates that the analyte was not detected by a screen analysis. The number value was determined by a one-point estimation at the PQL.
V Indicates the analyte was detected in both the sample and the associated method blank. Note: The value in the blank shall not be subtracted from the associated samples.
X1 Sample not screened for this compound.
X2 Sampled, but analysis lost or not performed-field error.
X3 Sampled, but analysis lost or not performed-lab error.
Y Elevated PQL* due to insufficient sample size.
Z1 Inability to analyze the sample.
Z2 Questions concerning data reliability.
J13 Standards used for this analyte are from an uncertified source. These are the only standards currently available for the analyte.
WSS Chemistry Laboratory>> 1623 Mail Service Center, Raleigh, NC 27699-1623 [phone]
Page 3 of 3
"Not Detected" or "U" does not indicate the sample is analyte free but that the analyte is not detected at or above the PQL.
DocuSign Envelope ID: 04BC8561-69D6-41D5-A96C-9E9CC6D44979