DDW-2025-001294

Thank you for using BSK Associates for your analytical testing needs. In the following pages, you will
find the test results for the samples submitted to our laboratory on 1/14/2025. The results have been
approved for release by our Laboratory Director as indicated by the authorizing signature below.
The samples were analyzed for the test(s) indicated on the Chain of Custody (see attached) and the
results relate only to the samples analyzed. BSK certifies that the testing was performed in
accordance with the quality system requirements specified in the 2016 TNI Standard. Any deviations
from this standard or from the method requirements for each test procedure performed will be
annotated alongside the analytical result or noted in the Case Narrative. Unless otherwise noted, the
sample results are reported on an “as received” basis.
This certificate of analysis shall not be reproduced except in full, without written approval of the laboratory.
If additional clarification of any information is required, please contact your Client Services
Representative, Heather S. Johnson , at 559-497-2888.
Thank you again for using BSK Associates. We value your business and appreciate your loyalty.
Sincerely,
WaterPro, Inc
Draper, UT 84020
P.O. Box 156
Dear Jerry Nielson,
Jerry Nielson
1/20/2025
AIA1835
RE: Report for AIA1835 PFAS
Heather S. Johnson, Project Manager
Accredited in Accordance with NELAP
ORELAP #4021
BSK Associates Laboratory Fresno
687 N. Laverne Avenue
Fresno, CA 93727
559-497-2888 (Main)
Invoice: AI01484
www.BSKAssociates.com
The results in this report apply to the samples analyzed in
accordance with the chain of custody document. This
analytical report must be reproduced in its entirety.
AIA1835 FINAL 01202025 0948
Page 1 of 11
AIA1835
PFAS
Case Narrative
Project and Report Details
Client:WaterPro, Inc
Report To:
Project #:
Received:1/14/2025 - 12:59
Jerry Nielson
Invoice To:
Invoice Attn:
WaterPro, Inc
Jerry Nielson
Project PO#:-
Report Due:1/28/2025
Invoice Details
-
Sample Receipt Conditions
Default CoolerCooler:Containers Intact
COC/Labels Agree
Preservation Confirmed
Received On Ice
Packing Material - Other
Sample(s) were received in temperature range.
Initial receipt at BSK-FAL
Data Qualifiers
The following qualifiers have been applied to one or more analytical results:
J Estimated value
Recipient(s) Report Format
Report Distribution
CC:
Jerry Nielson FINAL.RPT
www.BSKAssociates.com
The results in this report apply to the samples analyzed in
accordance with the chain of custody document. This
analytical report must be reproduced in its entirety.
AIA1835 FINAL 01202025 0948
Page 2 of 11
Certificate of Analysis
AIA1835
PFAS
Sample Description: Water Treatment Plant
Sample ID: AIA1835-04 05/22/2023 - 09:25
Sampled By:
FS
Brett Robbins Drinking Water
Sample Date - Time:
Matrix:
Sample Type:
BSK Associates Laboratory Fresno
Organics
ResultAnalyte RL Prepared Analyzed
RL
MultUnitsMethod Batch QualMDL
PFAS Short Chain
2.011Cl-PF3OUdS 06/12/23 06/14/23AIA1083ND10.67 ng/LEPA 533
2.09Cl-PF3ONS 06/12/23 06/14/23AIA1083ND10.67 ng/LEPA 533
2.0ADONA 06/12/23 06/14/23AIA1083ND10.67 ng/LEPA 533
2.0HFPO-DA 06/12/23 06/14/23AIA1083ND10.73 ng/LEPA 533
2.0NFDHA 06/12/23 06/14/23AIA1083ND10.67 ng/LEPA 533
2.0PFBA 06/12/23 06/14/23AIA10831.4 10.80 ng/LEPA 533 J
2.0PFBS 06/12/23 06/14/23AIA1083ND10.67 ng/LEPA 533
2.08:2 FTS 06/12/23 06/14/23AIA1083ND10.67 ng/LEPA 533
2.0PFDA 06/12/23 06/14/23AIA1083ND10.67 ng/LEPA 533
2.0PFDoA 06/12/23 06/14/23AIA1083ND10.67 ng/LEPA 533
2.0PFEESA 06/12/23 06/14/23AIA1083ND10.67 ng/LEPA 533
2.0PFHpS 06/12/23 06/14/23AIA1083ND10.67 ng/LEPA 533
2.0PFHpA 06/12/23 06/14/23AIA1083ND10.78 ng/LEPA 533
2.04:2 FTS 06/12/23 06/14/23AIA1083ND10.67 ng/LEPA 533
2.0PFHxS 06/12/23 06/14/23AIA1083ND10.67 ng/LEPA 533
2.0PFHxA 06/12/23 06/14/23AIA1083ND10.67 ng/LEPA 533
2.0PFMPA 06/12/23 06/14/23AIA1083ND10.67 ng/LEPA 533
2.0PFMBA 06/12/23 06/14/23AIA1083ND10.67 ng/LEPA 533
2.0PFNA 06/12/23 06/14/23AIA1083ND10.67 ng/LEPA 533
2.06:2 FTS 06/12/23 06/14/23AIA1083ND10.67 ng/LEPA 533
2.0PFOS 06/12/23 06/14/23AIA1083ND10.67 ng/LEPA 533
2.0PFOA 06/12/23 06/14/23AIA1083ND10.67 ng/LEPA 533
2.0PFPeA 06/12/23 06/14/23AIA1083ND10.67 ng/LEPA 533
2.0PFPeS 06/12/23 06/14/23AIA1083ND10.67 ng/LEPA 533
2.0PFUnDA 06/12/23 06/14/23AIA1083ND10.67 ng/LEPA 533
0.20Hazard Index 06/12/23 06/14/23AIA1083ND1EPA 533
Surrogate: S-13C4-PFBA Acceptable range: 50-200 %91 %EPA 533
Surrogate: S-13C5PFPeA Acceptable range: 50-200 %98 %EPA 533
Surrogate: S-13C3-PFBS Acceptable range: 50-200 %87 %EPA 533
Surrogate: S-13C2-4:2FTS Acceptable range: 50-200 %179 %EPA 533
Surrogate: S-13C5PFHxA Acceptable range: 50-200 %81 %EPA 533
Surrogate: S-13C3-HFPO-DA Acceptable range: 50-200 %83 %EPA 533
Surrogate: S-13C4PFHpA Acceptable range: 50-200 %70 %EPA 533
Surrogate: S-13C3-PFHxS Acceptable range: 50-200 %86 %EPA 533
Surrogate: S-13C2-6:2FTS Acceptable range: 50-200 %152 %EPA 533
Surrogate: S-13C8PFOA Acceptable range: 50-200 %78 %EPA 533
Surrogate: S-13C9PFNA Acceptable range: 50-200 %81 %EPA 533
Surrogate: S-13C8-PFOS Acceptable range: 50-200 %94 %EPA 533
Surrogate: S-13C2-8:2FTS Acceptable range: 50-200 %136 %EPA 533
Surrogate: S-13C6PFDA Acceptable range: 50-200 %84 %EPA 533
Surrogate: S-13C7-PFUnDA Acceptable range: 50-200 %88 %EPA 533
www.BSKAssociates.com
The results in this report apply to the samples analyzed in
accordance with the chain of custody document. This
analytical report must be reproduced in its entirety.
AIA1835 FINAL 01202025 0948
Page 3 of 11
Certificate of Analysis
AIA1835
PFAS
Sample Description: Water Treatment Plant
Sample ID: AIA1835-04 05/22/2023 - 09:25
Sampled By:
FS
Brett Robbins Drinking Water
Sample Date - Time:
Matrix:
Sample Type:
Organics
ResultAnalyte RL Prepared Analyzed
RL
MultUnitsMethod Batch QualMDL
Surrogate: S-13C2PFDoA Acceptable range: 50-200 %90 %EPA 533
www.BSKAssociates.com
The results in this report apply to the samples analyzed in
accordance with the chain of custody document. This
analytical report must be reproduced in its entirety.
AIA1835 FINAL 01202025 0948
Page 4 of 11
AIA1835
PFAS
Organics Quality Control Report
BSK Associates Laboratory Fresno
Analyte Result Units Level
Spike
Result %REC Limits RPD Limit QualRL
Source %REC RPD Date
AnalyzedMDL
Batch: AIA1083 Prepared: 6/12/2023
Analyst: JNGPrep Method: EPA 533
EPA 533 - Quality Control
Blank (AIA1083-BLK1)
11Cl-PF3OUdS ND ng/L2.0 06/13/230.67
9Cl-PF3ONS ND ng/L2.0 06/13/230.67
ADONA ND ng/L2.0 06/13/230.67
HFPO-DA ND ng/L2.0 06/13/230.73
NFDHA ND ng/L2.0 06/13/230.67
PFBA ND ng/L2.0 06/13/230.80
PFBS ND ng/L2.0 06/13/230.67
8:2 FTS ND ng/L2.0 06/13/230.67
PFDA ND ng/L2.0 06/13/230.67
PFDoA ND ng/L2.0 06/13/230.67
PFEESA ND ng/L2.0 06/13/230.67
PFHpS ND ng/L2.0 06/13/230.67
PFHpA ND ng/L2.0 06/13/230.78
4:2 FTS ND ng/L2.0 06/13/230.67
PFHxS ND ng/L2.0 06/13/230.67
PFHxA ND ng/L2.0 06/13/230.67
PFMPA ND ng/L2.0 06/13/230.67
PFMBA ND ng/L2.0 06/13/230.67
PFNA ND ng/L2.0 06/13/230.67
6:2 FTS ND ng/L2.0 06/13/230.67
PFOS ND ng/L2.0 06/13/230.67
PFOA ND ng/L2.0 06/13/230.67
PFPeA ND ng/L2.0 06/13/230.67
PFPeS ND ng/L2.0 06/13/230.67
PFUnDA ND ng/L2.0 06/13/230.67
50-200Surrogate: S-13C4-PFBA 7731 40 06/13/23
50-200Surrogate: S-13C5PFPeA 8233 40 06/13/23
50-200Surrogate: S-13C3-PFBS 10442 40 06/13/23
50-200Surrogate: S-13C2-4:2FTS 103160 160 06/13/23
50-200Surrogate: S-13C5PFHxA 7329 40 06/13/23
50-200Surrogate: S-13C3-HFPO-DA 6626 40 06/13/23
50-200Surrogate: S-13C4PFHpA 7630 40 06/13/23
50-200Surrogate: S-13C3-PFHxS 10843 40 06/13/23
50-200Surrogate: S-13C2-6:2FTS 114180 160 06/13/23
50-200Surrogate: S-13C8PFOA 8434 40 06/13/23
50-200Surrogate: S-13C9PFNA 8735 40 06/13/23
50-200Surrogate: S-13C8-PFOS 10341 40 06/13/23
50-200Surrogate: S-13C2-8:2FTS 110180 160 06/13/23
50-200Surrogate: S-13C6PFDA 8835 40 06/13/23
50-200Surrogate: S-13C7-PFUnDA 9337 40 06/13/23
50-200Surrogate: S-13C2PFDoA 9036 40 06/13/23
Blank Spike (AIA1083-BS1)
70-13011111Cl-PF3OUdS 2.02.2 ng/L2.0 06/14/230.67
www.BSKAssociates.com
The results in this report apply to the samples analyzed in
accordance with the chain of custody document. This
analytical report must be reproduced in its entirety.
AIA1835 FINAL 01202025 0948
Page 5 of 11
AIA1835
PFAS
Organics Quality Control Report
BSK Associates Laboratory Fresno
Analyte Result Units Level
Spike
Result %REC Limits RPD Limit QualRL
Source %REC RPD Date
AnalyzedMDL
Batch: AIA1083 Prepared: 6/12/2023
Analyst: JNGPrep Method: EPA 533
EPA 533 - Quality Control
Blank Spike (AIA1083-BS1)
70-1301129Cl-PF3ONS 2.02.2 ng/L2.0 06/14/230.67
70-130112ADONA2.02.2 ng/L2.0 06/14/230.67
70-130114HFPO-DA 2.02.3 ng/L2.0 06/14/230.73
70-130107NFDHA2.02.1 ng/L2.0 06/14/230.67
70-130126PFBA2.02.5 ng/L2.0 06/14/230.80
70-130118PFBS2.02.4 ng/L2.0 06/14/230.67
70-1301308:2 FTS 2.02.6 ng/L2.0 06/14/230.67
70-130125PFDA2.02.5 ng/L2.0 06/14/230.67
70-130110PFDoA2.02.2 ng/L2.0 06/14/230.67
70-130111PFEESA2.02.2 ng/L2.0 06/14/230.67
70-130119PFHpS2.02.4 ng/L2.0 06/14/230.67
70-130117PFHpA2.02.3 ng/L2.0 06/14/230.78
70-1301044:2 FTS 2.02.1 ng/L2.0 06/14/230.67
70-130110PFHxS2.02.2 ng/L2.0 06/14/230.67
70-130117PFHxA2.02.3 ng/L2.0 06/14/230.67
70-130112PFMPA2.02.2 ng/L2.0 06/14/230.67
70-130110PFMBA2.02.2 ng/L2.0 06/14/230.67
70-130112PFNA2.02.2 ng/L2.0 06/14/230.67
70-1301146:2 FTS 2.02.3 ng/L2.0 06/14/230.67
70-130117PFOS2.02.3 ng/L2.0 06/14/230.67
70-130111PFOA2.02.2 ng/L2.0 06/14/230.67
70-130121PFPeA2.02.4 ng/L2.0 06/14/230.67
70-130109PFPeS2.02.2 ng/L2.0 06/14/230.67
50-150123PFUnDA2.02.5 ng/L2.0 06/14/230.67
50-200Surrogate: S-13C4-PFBA 8333 40 06/14/23
50-200Surrogate: S-13C5PFPeA 8634 40 06/14/23
50-200Surrogate: S-13C3-PFBS 9940 40 06/14/23
50-200Surrogate: S-13C2-4:2FTS 101160 160 06/14/23
50-200Surrogate: S-13C5PFHxA 8032 40 06/14/23
50-200Surrogate: S-13C3-HFPO-DA 7831 40 06/14/23
50-200Surrogate: S-13C4PFHpA 8233 40 06/14/23
50-200Surrogate: S-13C3-PFHxS 10241 40 06/14/23
50-200Surrogate: S-13C2-6:2FTS 111180 160 06/14/23
50-200Surrogate: S-13C8PFOA 8433 40 06/14/23
50-200Surrogate: S-13C9PFNA 9437 40 06/14/23
50-200Surrogate: S-13C8-PFOS 9639 40 06/14/23
50-200Surrogate: S-13C2-8:2FTS 101160 160 06/14/23
50-200Surrogate: S-13C6PFDA 8735 40 06/14/23
50-200Surrogate: S-13C7-PFUnDA 9337 40 06/14/23
50-200Surrogate: S-13C2PFDoA 9538 40 06/14/23
www.BSKAssociates.com
The results in this report apply to the samples analyzed in
accordance with the chain of custody document. This
analytical report must be reproduced in its entirety.
AIA1835 FINAL 01202025 0948
Page 6 of 11
AIA1835
PFAS
Certificate of Analysis
Notes:
· The Chain of Custody document and Sample Integrity Sheet are part of the analytical report.
· Any remaining sample(s) for testing will be disposed of according to BSK's sample retention policy unless other arrangements are made in
advance.
· All positive results for EPA Methods 504.1 and 524.2 require the analysis of a Field Reagent Blank (FRB) to confirm that the results are not
a contamination error from field sampling steps. If Field Reagent Blanks were not submitted with the samples, this method requirement has
not been performed.
· Samples collected by BSK Analytical Laboratories were collected in accordance with the BSK Sampling and Collection Standard Operating
Procedures.
· J-value is equivalent to DNQ (Detected, not quantified) which is a trace value. A trace value is an analyte detected between the MDL and the
laboratory reporting limit. This result is of an unknown data quality and is only qualitative (estimated). Baseline noise, calibration curve
extrapolation below the lowest calibrator, method blank detections, and integration artifacts can all produce apparent DNQ values, which
contribute to the un-reliability of these values.
· (1) - Residual chlorine and pH analysis have a 15 minute holding time for both drinking and waste water samples as defined by the EPA and
40 CFR 136. Waste water and ground water (monitoring well) samples must be field filtered to meet the 15 minute holding time for dissolved
metals.
· Field tests are outside the scope of laboratory accreditation and there is no certification available for field testing.
· Summations of analytes (i.e. Total Trihalomethanes) may appear to add individual amounts incorrectly, due to rounding of analyte values
occurring before or after the total value is calculated, as well as rounding of the total value.
· RL Multiplier is the factor used to adjust the reporting limit (RL) due to variations in sample preparation procedures and dilutions required for
matrix interferences.
· Due to the subjective nature of the Threshold Odor Method, all characterizations of the detected odor are the opinion of the panel of
analysts. The characterizations can be found in Standard Methods 2170B Figure 2170:1.
· The MCLs provided in this report (if applicable) represent the primary MCLs for that analyte.
· (2) - Formerly known as Bis(2-Chloroisopropyl) ether.
Unless otherwise noted, TOC results by SM 5310C method do not include purgeable organic carbon, which is removed along with the
inorganic carbon interference. The POC contribution to TOC is considered to be negligible.
www.BSKAssociates.com
The results in this report apply to the samples analyzed in
accordance with the chain of custody document. This
analytical report must be reproduced in its entirety.
AIA1835 FINAL 01202025 0948
Page 7 of 11
AIA1835
PFAS
Certificate of Analysis
Definitions
mg/L: Milligrams/Liter (ppm)
mg/Kg: Milligrams/Kilogram (ppm)
µg/L: Micrograms/Liter (ppb)
µg/Kg: Micrograms/Kilogram (ppb)
%: Percent
NR: Non-Reportable
MDL: Method Detection Limit
RL: Reporting Limit: DL x Dilution
ND: None Detected below MRL/MDL
pCi/L: PicoCuries per Liter
RL Mult: RL Multiplier
MCL: Maximum Contaminant Limit
MDA95: Min. Detected Activity
MPN: Most Probable Number
CFU: Colony Forming Unit
Absent: Less than 1 CFU/100mLs
Present: 1 or more CFU/100mLs
U: The analyte was not detected at or
above the reported sample quantitation
limit.
Please see the individual Subcontract Lab's report for applicable certifications.
The following parameters are not available for certification through CA ELAP:
Odor Diisopropyl ether (DIPE) by EPA 524.2
The following parameters are calculated values and are outside the scope of our NELAP accreditation:
Total Nitrogen Aggressive Index Trivalent Chromium
BSK is not accredited under the NELAP program for the following additional parameters:**NA**
www.BSKAssociates.com
The results in this report apply to the samples analyzed in
accordance with the chain of custody document. This
analytical report must be reproduced in its entirety.
AIA1835 FINAL 01202025 0948
Page 8 of 11
AIA1835
PFAS
Certificate of Analysis
Certifications: Please refer to our website for a copy of our Accredited Fields of Testing under each certification.
Fresno
1180State of California - ELAP 4021State of Hawaii
9254479Los Angeles CSD 4021-023NELAP certified
NV-C24-00233State of Nevada 4021-023State of Oregon - NELAP
CA00079EPA UCMR5 C997-24bState of Washington
Sacramento
1180-S1State of California - ELAP
San Bernardino
1180-S2State of California - ELAP 9254478Los Angeles CSD
4119-009NELAP certified 4119-009State of Oregon - NELAP
Vancouver
WA100008-019NELAP certified WA100008-019State of Oregon - NELAP
C824-24State of Washington
www.BSKAssociates.com
The results in this report apply to the samples analyzed in
accordance with the chain of custody document. This
analytical report must be reproduced in its entirety.
AIA1835 FINAL 01202025 0948
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