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DDW-2025-001317
UCMR5Project Name: Page 1 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Attached is the analytical report for the sample(s) received for your project. Below is a list of the individual sample descriptions with the corresponding laboratory number(s). Also, enclosed is a copy of the Chain of Custody document (if received with your sample(s)). Please note any unused portion of the sample(s) may be responsibly discarded after 30 days from the above report date, unless you have requested otherwise. Thank you for the opportunity to serve your analytical needs. If you have any questions or concerns regarding this report please contact our client service department. Sample Identification Lab Sample #Client Sample ID Matrix Date Sampled Date SubmittedBy By WaterC4E0039-01 04/29/24 15:10 Darrin Taylor FED EX05/01/24 09:40WS002 WaterC4E0039-03 04/29/24 15:30 Darrin Taylor FED EX05/01/24 09:40WS007 WaterC4E0039-05 04/29/24 15:55 Darrin Taylor FED EX05/01/24 09:40WS009 WaterC4E0039-07 04/29/24 14:50 Darrin Taylor FED EX05/01/24 09:40WS003 mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 Weber Basin WCD Central Intertie Shop Well Church St Well Fort Lane Well ** This report shows results reprocessed at lower reporting limits (RL) to assist with initial monitoring required by Final PFAS Drinking Water Regulation. ** UCMR5Project Name: Page 2 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Laboratory Reference Number Sample Description 04/29/24 15:10 Sampled Date/Time Received Date/Time 05/01/24 9:40 Matrix WaterWS002 C4E0039-01 ResultAnalyte(s)RDL Analysis DateMethodUnits Analyst Flag Per-/Polyfluorinated Alkyl Substances NDPerfluorobutanoic acid (PFBA) 0.0017 ug/L EPA 533 05/24/24 10:30 AZP NDPerfluoropentanoic acid (PFPeA) 0.0017 ug/L EPA 533 05/24/24 10:30 AZP NDPerfluorohexanoic Acid (PFHxA) 0.0017 ug/L EPA 533 05/24/24 10:30 AZP NDPerfluoroheptanoic Acid (PFHpA) 0.0017 ug/L EPA 533 05/24/24 10:30 AZP NDPerfluorooctanoic Acid (PFOA) 0.0017 ug/L EPA 533 05/24/24 10:30 AZP NDPerfluorononanoic Acid (PFNA) 0.0017 ug/L EPA 533 05/24/24 10:30 AZP NDPerfluorodecanoic Acid (PFDA) 0.0017 ug/L EPA 533 05/24/24 10:30 AZP NDPerfluoroundecanoic Acid (PFUnA) 0.0017 ug/L EPA 533 05/24/24 10:30 AZP NDPerfluorododecanoic Acid (PFDoDA) 0.0017 ug/L EPA 533 05/24/24 10:30 AZP NDPerfluorobutanesulfonic Acid (PFBS) 0.0017 ug/L EPA 533 05/24/24 10:30 AZP NDPerfluoropentanesulfonate (PFPeS) 0.0017 ug/L EPA 533 05/24/24 10:30 AZP NDPerfluorohexanesulfonic Acid (PFHxS) 0.0017 ug/L EPA 533 05/24/24 10:30 AZP NDPerfluoroheptanesulfonic acid (PFHpS) 0.0017 ug/L EPA 533 05/24/24 10:30 AZP NDPerfluorooctanesulfonic Acid (PFOS) 0.0017 ug/L EPA 533 05/24/24 10:30 AZP ND4:2 Fluorotelomer Sulfonate 0.0017 ug/L EPA 533 05/24/24 10:30 AZP ND6:2 Fluorotelomer Sulfonate 0.0017 ug/L EPA 533 05/24/24 10:30 AZP ND8:2 Fluorotelomer Sulfonate 0.0017 ug/L EPA 533 05/24/24 10:30 AZP NDHexafluoropropylene oxide dimer acid (HFPO-DA) 0.0017 ug/L EPA 533 05/24/24 10:30 AZP ND4,8-dioxa-3H-perfluorononanoic Acid (ADONA) 0.0017 ug/L EPA 533 05/24/24 10:30 AZP ND9-chlorohexadecafluoro-3-oxanon e-1-sulfonic Acid 0.0017 ug/L EPA 533 05/24/24 10:30 AZP NDNonafluoro-3,6-dioxaheptanoic acid (NFDHA) 0.0017 ug/L EPA 533 05/24/24 10:30 AZP ND11-chloroeicosafluoro 3oxaundecane-1-sulfonic Acid 0.0017 ug/L EPA 533 05/24/24 10:30 AZP NDPerfluoro-4-methoxybutanoic acid (PFMBA) 0.0017 ug/L EPA 533 05/24/24 10:30 AZP mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 ** This report shows results reprocessed at lower reporting limits (RL) to assist with initial monitoring required by Final PFAS Drinking Water Regulation. ** Fort Lane Well UCMR5Project Name: Page 3 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Laboratory Reference Number Sample Description 04/29/24 15:10 Sampled Date/Time Received Date/Time 05/01/24 9:40 Matrix WaterWS002 C4E0039-01 ResultAnalyte(s)RDL Analysis DateMethodUnits Analyst Flag Per-/Polyfluorinated Alkyl Substances NDPerfluoro-3-methoxypropanoic acid (PFMPA) 0.0017 ug/L EPA 533 05/24/24 10:30 AZP NDPerfluoro(2-ethoxyethane)sulfonic acid (PFEESA) 0.0017 ug/L EPA 533 05/24/24 10:30 AZP Surrogate: 13C4-PFBA EPA 533 05/24/24 10:3069%50-200 AZP Surrogate: 13C5-PFPeA EPA 533 05/24/24 10:3073%50-200 AZP Surrogate: 13C5-PFHxA EPA 533 05/24/24 10:3065%50-200 AZP Surrogate: 13C4-PFHpA EPA 533 05/24/24 10:3067%50-200 AZP Surrogate: 13C8-PFOA EPA 533 05/24/24 10:3064%50-200 AZP Surrogate: 13C9-PFNA EPA 533 05/24/24 10:3069%50-200 AZP Surrogate: 13C6-PFDA EPA 533 05/24/24 10:3077%50-200 AZP Surrogate: 13C7-PFUnA EPA 533 05/24/24 10:3078%50-200 AZP Surrogate: 13C2-PFDoA EPA 533 05/24/24 10:3077%50-200 AZP Surrogate: 13C3-PFBS EPA 533 05/24/24 10:30100%50-200 AZP Surrogate: 13C3-PFHxS EPA 533 05/24/24 10:30101%50-200 AZP Surrogate: 13C8-PFOS EPA 533 05/24/24 10:3095%50-200 AZP Surrogate: 13C2-4:2 FTS EPA 533 05/24/24 10:3098%50-200 AZP Surrogate: 13C2-6:2 FTS EPA 533 05/24/24 10:3097%50-200 AZP Surrogate: 13C2-8:2 FTS EPA 533 05/24/24 10:3087%50-200 AZP Surrogate: 13C3-HFPO-DA EPA 533 05/24/24 10:3067%50-200 AZP Metals and Metalloids NDLithium 9.0 ug/L EPA 200.7 05/20/24 12:40 MGA Perfluorinated Compounds by EPA 537.1 NDN-EtFOSAA 0.0017 ug/L EPA 537 05/13/24 23:35 VPO NDN-MeFOSAA 0.0017 ug/L EPA 537 05/13/24 23:35 VPO NDPerfluorotridecanoic Acid (PFTrDA) 0.0017 ug/L EPA 537 05/13/24 23:35 VPO NDPerfluorotetradecanoic Acid (PFTeDA) 0.0017 ug/L EPA 537 05/13/24 23:35 VPO mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 ** This report shows results reprocessed at lower reporting limits (RL) to assist with initial monitoring required by Final PFAS Drinking Water Regulation. ** Fort Lane Well UCMR5Project Name: Page 4 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Laboratory Reference Number Sample Description 04/29/24 15:10 Sampled Date/Time Received Date/Time 05/01/24 9:40 Matrix WaterWS002 C4E0039-01 ResultAnalyte(s)RDL Analysis DateMethodUnits Analyst Flag Perfluorinated Compounds by EPA 537.1 Surrogate: 13C2-PFDA EPA 537 05/13/24 23:3592%70-130 VPO Surrogate: 13C2-PFHxA EPA 537 05/13/24 23:3594%70-130 VPO Surrogate: 13C3-HFPO-DA EPA 537 05/13/24 23:3592%70-130 VPO Surrogate: N-EtFOSAA-D5 EPA 537 05/13/24 23:3587%70-130 VPO mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 ** This report shows results reprocessed at lower reporting limits (RL) to assist with initial monitoring required by Final PFAS Drinking Water Regulation. ** Fort Lane Well UCMR5Project Name: Page 5 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Laboratory Reference Number Sample Description 04/29/24 15:30 Sampled Date/Time Received Date/Time 05/01/24 9:40 Matrix WaterWS007 C4E0039-03 ResultAnalyte(s)RDL Analysis DateMethodUnits Analyst Flag Per-/Polyfluorinated Alkyl Substances NDPerfluorobutanoic acid (PFBA) 0.0017 ug/L EPA 533 05/24/24 11:07 AZP NDPerfluoropentanoic acid (PFPeA) 0.0017 ug/L EPA 533 05/24/24 11:07 AZP NDPerfluorohexanoic Acid (PFHxA) 0.0017 ug/L EPA 533 05/24/24 11:07 AZP NDPerfluoroheptanoic Acid (PFHpA) 0.0017 ug/L EPA 533 05/24/24 11:07 AZP NDPerfluorooctanoic Acid (PFOA) 0.0017 ug/L EPA 533 05/24/24 11:07 AZP NDPerfluorononanoic Acid (PFNA) 0.0017 ug/L EPA 533 05/24/24 11:07 AZP NDPerfluorodecanoic Acid (PFDA) 0.0017 ug/L EPA 533 05/24/24 11:07 AZP NDPerfluoroundecanoic Acid (PFUnA) 0.0017 ug/L EPA 533 05/24/24 11:07 AZP NDPerfluorododecanoic Acid (PFDoDA) 0.0017 ug/L EPA 533 05/24/24 11:07 AZP NDPerfluorobutanesulfonic Acid (PFBS) 0.0017 ug/L EPA 533 05/24/24 11:07 AZP NDPerfluoropentanesulfonate (PFPeS) 0.0017 ug/L EPA 533 05/24/24 11:07 AZP NDPerfluorohexanesulfonic Acid (PFHxS) 0.0017 ug/L EPA 533 05/24/24 11:07 AZP NDPerfluoroheptanesulfonic acid (PFHpS) 0.0017 ug/L EPA 533 05/24/24 11:07 AZP NDPerfluorooctanesulfonic Acid (PFOS) 0.0017 ug/L EPA 533 05/24/24 11:07 AZP ND4:2 Fluorotelomer Sulfonate 0.0017 ug/L EPA 533 05/24/24 11:07 AZP ND6:2 Fluorotelomer Sulfonate 0.0017 ug/L EPA 533 05/24/24 11:07 AZP ND8:2 Fluorotelomer Sulfonate 0.0017 ug/L EPA 533 05/24/24 11:07 AZP NDHexafluoropropylene oxide dimer acid (HFPO-DA) 0.0017 ug/L EPA 533 05/24/24 11:07 AZP ND4,8-dioxa-3H-perfluorononanoic Acid (ADONA) 0.0017 ug/L EPA 533 05/24/24 11:07 AZP ND9-chlorohexadecafluoro-3-oxanon e-1-sulfonic Acid 0.0017 ug/L EPA 533 05/24/24 11:07 AZP NDNonafluoro-3,6-dioxaheptanoic acid (NFDHA) 0.0017 ug/L EPA 533 05/24/24 11:07 AZP ND11-chloroeicosafluoro 3oxaundecane-1-sulfonic Acid 0.0017 ug/L EPA 533 05/24/24 11:07 AZP NDPerfluoro-4-methoxybutanoic acid (PFMBA) 0.0017 ug/L EPA 533 05/24/24 11:07 AZP mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 ** This report shows results reprocessed at lower reporting limits (RL) to assist with initial monitoring required by Final PFAS Drinking Water Regulation. ** Church St Well UCMR5Project Name: Page 6 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Laboratory Reference Number Sample Description 04/29/24 15:30 Sampled Date/Time Received Date/Time 05/01/24 9:40 Matrix WaterWS007 C4E0039-03 ResultAnalyte(s)RDL Analysis DateMethodUnits Analyst Flag Per-/Polyfluorinated Alkyl Substances NDPerfluoro-3-methoxypropanoic acid (PFMPA) 0.0017 ug/L EPA 533 05/24/24 11:07 AZP NDPerfluoro(2-ethoxyethane)sulfonic acid (PFEESA) 0.0017 ug/L EPA 533 05/24/24 11:07 AZP Surrogate: 13C4-PFBA EPA 533 05/24/24 11:0767%50-200 AZP Surrogate: 13C5-PFPeA EPA 533 05/24/24 11:0773%50-200 AZP Surrogate: 13C5-PFHxA EPA 533 05/24/24 11:0767%50-200 AZP Surrogate: 13C4-PFHpA EPA 533 05/24/24 11:0773%50-200 AZP Surrogate: 13C8-PFOA EPA 533 05/24/24 11:0770%50-200 AZP Surrogate: 13C9-PFNA EPA 533 05/24/24 11:0776%50-200 AZP Surrogate: 13C6-PFDA EPA 533 05/24/24 11:0788%50-200 AZP Surrogate: 13C7-PFUnA EPA 533 05/24/24 11:0788%50-200 AZP Surrogate: 13C2-PFDoA EPA 533 05/24/24 11:0784%50-200 AZP Surrogate: 13C3-PFBS EPA 533 05/24/24 11:07101%50-200 AZP Surrogate: 13C3-PFHxS EPA 533 05/24/24 11:07107%50-200 AZP Surrogate: 13C8-PFOS EPA 533 05/24/24 11:0798%50-200 AZP Surrogate: 13C2-4:2 FTS EPA 533 05/24/24 11:07102%50-200 AZP Surrogate: 13C2-6:2 FTS EPA 533 05/24/24 11:07100%50-200 AZP Surrogate: 13C2-8:2 FTS EPA 533 05/24/24 11:0792%50-200 AZP Surrogate: 13C3-HFPO-DA EPA 533 05/24/24 11:0767%50-200 AZP Metals and Metalloids NDLithium 9.0 ug/L EPA 200.7 05/20/24 12:42 MGA Perfluorinated Compounds by EPA 537.1 NDN-EtFOSAA 0.0017 ug/L EPA 537 05/14/24 00:19 VPO NDN-MeFOSAA 0.0017 ug/L EPA 537 05/14/24 00:19 VPO NDPerfluorotridecanoic Acid (PFTrDA) 0.0017 ug/L EPA 537 05/14/24 00:19 VPO NDPerfluorotetradecanoic Acid (PFTeDA) 0.0017 ug/L EPA 537 05/14/24 00:19 VPO mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 ** This report shows results reprocessed at lower reporting limits (RL) to assist with initial monitoring required by Final PFAS Drinking Water Regulation. ** Church St Well UCMR5Project Name: Page 7 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Laboratory Reference Number Sample Description 04/29/24 15:30 Sampled Date/Time Received Date/Time 05/01/24 9:40 Matrix WaterWS007 C4E0039-03 ResultAnalyte(s)RDL Analysis DateMethodUnits Analyst Flag Perfluorinated Compounds by EPA 537.1 Surrogate: 13C2-PFDA EPA 537 05/14/24 00:1993%70-130 VPO Surrogate: 13C2-PFHxA EPA 537 05/14/24 00:1993%70-130 VPO Surrogate: 13C3-HFPO-DA EPA 537 05/14/24 00:1991%70-130 VPO Surrogate: N-EtFOSAA-D5 EPA 537 05/14/24 00:1987%70-130 VPO mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 ** This report shows results reprocessed at lower reporting limits (RL) to assist with initial monitoring required by Final PFAS Drinking Water Regulation. ** Church St Well UCMR5Project Name: Page 8 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Laboratory Reference Number Sample Description 04/29/24 15:55 Sampled Date/Time Received Date/Time 05/01/24 9:40 Matrix WaterWS009 C4E0039-05 ResultAnalyte(s)RDL Analysis DateMethodUnits Analyst Flag Per-/Polyfluorinated Alkyl Substances NDPerfluorobutanoic acid (PFBA) 0.0017 ug/L EPA 533 05/24/24 11:45 AZP NDPerfluoropentanoic acid (PFPeA) 0.0017 ug/L EPA 533 05/24/24 11:45 AZP NDPerfluorohexanoic Acid (PFHxA) 0.0017 ug/L EPA 533 05/24/24 11:45 AZP NDPerfluoroheptanoic Acid (PFHpA) 0.0017 ug/L EPA 533 05/24/24 11:45 AZP NDPerfluorooctanoic Acid (PFOA) 0.0017 ug/L EPA 533 05/24/24 11:45 AZP NDPerfluorononanoic Acid (PFNA) 0.0017 ug/L EPA 533 05/24/24 11:45 AZP NDPerfluorodecanoic Acid (PFDA) 0.0017 ug/L EPA 533 05/24/24 11:45 AZP NDPerfluoroundecanoic Acid (PFUnA) 0.0017 ug/L EPA 533 05/24/24 11:45 AZP NDPerfluorododecanoic Acid (PFDoDA) 0.0017 ug/L EPA 533 05/24/24 11:45 AZP NDPerfluorobutanesulfonic Acid (PFBS) 0.0017 ug/L EPA 533 05/24/24 11:45 AZP NDPerfluoropentanesulfonate (PFPeS) 0.0017 ug/L EPA 533 05/24/24 11:45 AZP NDPerfluorohexanesulfonic Acid (PFHxS) 0.0017 ug/L EPA 533 05/24/24 11:45 AZP NDPerfluoroheptanesulfonic acid (PFHpS) 0.0017 ug/L EPA 533 05/24/24 11:45 AZP NDPerfluorooctanesulfonic Acid (PFOS) 0.0017 ug/L EPA 533 05/24/24 11:45 AZP ND4:2 Fluorotelomer Sulfonate 0.0017 ug/L EPA 533 05/24/24 11:45 AZP ND6:2 Fluorotelomer Sulfonate 0.0017 ug/L EPA 533 05/24/24 11:45 AZP ND8:2 Fluorotelomer Sulfonate 0.0017 ug/L EPA 533 05/24/24 11:45 AZP NDHexafluoropropylene oxide dimer acid (HFPO-DA) 0.0017 ug/L EPA 533 05/24/24 11:45 AZP ND4,8-dioxa-3H-perfluorononanoic Acid (ADONA) 0.0017 ug/L EPA 533 05/24/24 11:45 AZP ND9-chlorohexadecafluoro-3-oxanon e-1-sulfonic Acid 0.0017 ug/L EPA 533 05/24/24 11:45 AZP ND11-chloroeicosafluoro 3oxaundecane-1-sulfonic Acid 0.0017 ug/L EPA 533 05/24/24 11:45 AZP NDNonafluoro-3,6-dioxaheptanoic acid (NFDHA) 0.0017 ug/L EPA 533 05/24/24 11:45 AZP NDPerfluoro-4-methoxybutanoic acid (PFMBA) 0.0017 ug/L EPA 533 05/24/24 11:45 AZP mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 ** This report shows results reprocessed at lower reporting limits (RL) to assist with initial monitoring required by Final PFAS Drinking Water Regulation. ** Shop Well UCMR5Project Name: Page 9 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Laboratory Reference Number Sample Description 04/29/24 15:55 Sampled Date/Time Received Date/Time 05/01/24 9:40 Matrix WaterWS009 C4E0039-05 ResultAnalyte(s)RDL Analysis DateMethodUnits Analyst Flag Per-/Polyfluorinated Alkyl Substances NDPerfluoro-3-methoxypropanoic acid (PFMPA) 0.0017 ug/L EPA 533 05/24/24 11:45 AZP NDPerfluoro(2-ethoxyethane)sulfonic acid (PFEESA) 0.0017 ug/L EPA 533 05/24/24 11:45 AZP Surrogate: 13C4-PFBA EPA 533 05/24/24 11:4581%50-200 AZP Surrogate: 13C5-PFPeA EPA 533 05/24/24 11:4584%50-200 AZP Surrogate: 13C5-PFHxA EPA 533 05/24/24 11:4580%50-200 AZP Surrogate: 13C4-PFHpA EPA 533 05/24/24 11:4578%50-200 AZP Surrogate: 13C8-PFOA EPA 533 05/24/24 11:4585%50-200 AZP Surrogate: 13C9-PFNA EPA 533 05/24/24 11:4581%50-200 AZP Surrogate: 13C6-PFDA EPA 533 05/24/24 11:4578%50-200 AZP Surrogate: 13C7-PFUnA EPA 533 05/24/24 11:4570%50-200 AZP Surrogate: 13C2-PFDoA EPA 533 05/24/24 11:4564%50-200 AZP Surrogate: 13C3-PFBS EPA 533 05/24/24 11:4598%50-200 AZP Surrogate: 13C3-PFHxS EPA 533 05/24/24 11:45102%50-200 AZP Surrogate: 13C8-PFOS EPA 533 05/24/24 11:4588%50-200 AZP Surrogate: 13C2-4:2 FTS EPA 533 05/24/24 11:45106%50-200 AZP Surrogate: 13C2-6:2 FTS EPA 533 05/24/24 11:4599%50-200 AZP Surrogate: 13C2-8:2 FTS EPA 533 05/24/24 11:4575%50-200 AZP Surrogate: 13C3-HFPO-DA EPA 533 05/24/24 11:4583%50-200 AZP Metals and Metalloids NDLithium 9.0 ug/L EPA 200.7 05/20/24 12:46 MGA Perfluorinated Compounds by EPA 537.1 NDN-EtFOSAA 0.0018 ug/L EPA 537 05/14/24 01:03 VPO NDN-MeFOSAA 0.0018 ug/L EPA 537 05/14/24 01:03 VPO NDPerfluorotridecanoic Acid (PFTrDA) 0.0018 ug/L EPA 537 05/14/24 01:03 VPO NDPerfluorotetradecanoic Acid (PFTeDA) 0.0018 ug/L EPA 537 05/14/24 01:03 VPO mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 ** This report shows results reprocessed at lower reporting limits (RL) to assist with initial monitoring required by Final PFAS Drinking Water Regulation. ** Shop Well UCMR5Project Name: Page 10 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Laboratory Reference Number Sample Description 04/29/24 15:55 Sampled Date/Time Received Date/Time 05/01/24 9:40 Matrix WaterWS009 C4E0039-05 ResultAnalyte(s)RDL Analysis DateMethodUnits Analyst Flag Perfluorinated Compounds by EPA 537.1 Surrogate: 13C2-PFDA EPA 537 05/14/24 01:0383%70-130 VPO Surrogate: 13C2-PFHxA EPA 537 05/14/24 01:0394%70-130 VPO Surrogate: 13C3-HFPO-DA EPA 537 05/14/24 01:0392%70-130 VPO Surrogate: N-EtFOSAA-D5 EPA 537 05/14/24 01:0374%70-130 VPO mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 ** This report shows results reprocessed at lower reporting limits (RL) to assist with initial monitoring required by Final PFAS Drinking Water Regulation. ** Shop Well UCMR5Project Name: Page 11 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Laboratory Reference Number Sample Description 04/29/24 14:50 Sampled Date/Time Received Date/Time 05/01/24 9:40 Matrix WaterWS003 C4E0039-07 ResultAnalyte(s)RDL Analysis DateMethodUnits Analyst Flag Per-/Polyfluorinated Alkyl Substances NDPerfluorobutanoic acid (PFBA) 0.0017 ug/L EPA 533 05/29/24 14:54 AZP NDPerfluoropentanoic acid (PFPeA) 0.0017 ug/L EPA 533 05/29/24 14:54 AZP NDPerfluorohexanoic Acid (PFHxA) 0.0017 ug/L EPA 533 05/29/24 14:54 AZP NDPerfluoroheptanoic Acid (PFHpA) 0.0017 ug/L EPA 533 05/29/24 14:54 AZP NDPerfluorooctanoic Acid (PFOA) 0.0017 ug/L EPA 533 05/29/24 14:54 AZP NDPerfluorononanoic Acid (PFNA) 0.0017 ug/L EPA 533 05/29/24 14:54 AZP NDPerfluorodecanoic Acid (PFDA) 0.0017 ug/L EPA 533 05/29/24 14:54 AZP NDPerfluoroundecanoic Acid (PFUnA) 0.0017 ug/L EPA 533 05/29/24 14:54 AZP NDPerfluorododecanoic Acid (PFDoDA) 0.0017 ug/L EPA 533 05/29/24 14:54 AZP NDPerfluorobutanesulfonic Acid (PFBS) 0.0017 ug/L EPA 533 05/29/24 14:54 AZP NDPerfluoropentanesulfonate (PFPeS) 0.0017 ug/L EPA 533 05/29/24 14:54 AZP NDPerfluorohexanesulfonic Acid (PFHxS) 0.0017 ug/L EPA 533 05/29/24 14:54 AZP NDPerfluoroheptanesulfonic acid (PFHpS) 0.0017 ug/L EPA 533 05/29/24 14:54 AZP NDPerfluorooctanesulfonic Acid (PFOS) 0.0017 ug/L EPA 533 05/29/24 14:54 AZP ND4:2 Fluorotelomer Sulfonate 0.0017 ug/L EPA 533 05/29/24 14:54 AZP ND6:2 Fluorotelomer Sulfonate 0.0017 ug/L EPA 533 05/29/24 14:54 AZP ND8:2 Fluorotelomer Sulfonate 0.0017 ug/L EPA 533 05/29/24 14:54 AZP NDHexafluoropropylene oxide dimer acid (HFPO-DA) 0.0017 ug/L EPA 533 05/29/24 14:54 AZP ND4,8-dioxa-3H-perfluorononanoic Acid (ADONA) 0.0017 ug/L EPA 533 05/29/24 14:54 AZP ND9-chlorohexadecafluoro-3-oxanon e-1-sulfonic Acid 0.0017 ug/L EPA 533 05/29/24 14:54 AZP NDNonafluoro-3,6-dioxaheptanoic acid (NFDHA) 0.0017 ug/L EPA 533 05/29/24 14:54 AZP ND11-chloroeicosafluoro 3oxaundecane-1-sulfonic Acid 0.0017 ug/L EPA 533 05/29/24 14:54 AZP NDPerfluoro-4-methoxybutanoic acid (PFMBA) 0.0017 ug/L EPA 533 05/29/24 14:54 AZP mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 ** This report shows results reprocessed at lower reporting limits (RL) to assist with initial monitoring required by Final PFAS Drinking Water Regulation. ** Weber Basin WCD Central Intertie UCMR5Project Name: Page 12 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Laboratory Reference Number Sample Description 04/29/24 14:50 Sampled Date/Time Received Date/Time 05/01/24 9:40 Matrix WaterWS003 C4E0039-07 ResultAnalyte(s)RDL Analysis DateMethodUnits Analyst Flag Per-/Polyfluorinated Alkyl Substances NDPerfluoro-3-methoxypropanoic acid (PFMPA) 0.0017 ug/L EPA 533 05/29/24 14:54 AZP NDPerfluoro(2-ethoxyethane)sulfonic acid (PFEESA) 0.0017 ug/L EPA 533 05/29/24 14:54 AZP Surrogate: 13C4-PFBA EPA 533 05/29/24 14:5490%50-200 AZP Surrogate: 13C5-PFPeA EPA 533 05/29/24 14:5473%50-200 AZP Surrogate: 13C5-PFHxA EPA 533 05/29/24 14:5487%50-200 AZP Surrogate: 13C4-PFHpA EPA 533 05/29/24 14:5486%50-200 AZP Surrogate: 13C8-PFOA EPA 533 05/29/24 14:5482%50-200 AZP Surrogate: 13C9-PFNA EPA 533 05/29/24 14:5480%50-200 AZP Surrogate: 13C6-PFDA EPA 533 05/29/24 14:5483%50-200 AZP Surrogate: 13C7-PFUnA EPA 533 05/29/24 14:5478%50-200 AZP Surrogate: 13C2-PFDoA EPA 533 05/29/24 14:5470%50-200 AZP Surrogate: 13C3-PFBS EPA 533 05/29/24 14:5488%50-200 AZP Surrogate: 13C3-PFHxS EPA 533 05/29/24 14:5499%50-200 AZP Surrogate: 13C8-PFOS EPA 533 05/29/24 14:5498%50-200 AZP Surrogate: 13C2-4:2 FTS EPA 533 05/29/24 14:54131%50-200 AZP Surrogate: 13C2-6:2 FTS EPA 533 05/29/24 14:5490%50-200 AZP Surrogate: 13C2-8:2 FTS EPA 533 05/29/24 14:5486%50-200 AZP Surrogate: 13C3-HFPO-DA EPA 533 05/29/24 14:5493%50-200 AZP Metals and Metalloids NDLithium 9.0 ug/L EPA 200.7 05/20/24 12:47 MGA Perfluorinated Compounds by EPA 537.1 NDN-EtFOSAA 0.0017 ug/L EPA 537 05/14/24 01:46 VPO NDN-MeFOSAA 0.0017 ug/L EPA 537 05/14/24 01:46 VPO NDPerfluorotridecanoic Acid (PFTrDA) 0.0017 ug/L EPA 537 05/14/24 01:46 VPO NDPerfluorotetradecanoic Acid (PFTeDA) 0.0017 ug/L EPA 537 05/14/24 01:46 VPO mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 ** This report shows results reprocessed at lower reporting limits (RL) to assist with initial monitoring required by Final PFAS Drinking Water Regulation. ** Weber Basin WCD Central Intertie UCMR5Project Name: Page 13 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Laboratory Reference Number Sample Description 04/29/24 14:50 Sampled Date/Time Received Date/Time 05/01/24 9:40 Matrix WaterWS003 C4E0039-07 ResultAnalyte(s)RDL Analysis DateMethodUnits Analyst Flag Perfluorinated Compounds by EPA 537.1 Surrogate: 13C2-PFDA EPA 537 05/14/24 01:4690%70-130 VPO Surrogate: 13C2-PFHxA EPA 537 05/14/24 01:4695%70-130 VPO Surrogate: 13C3-HFPO-DA EPA 537 05/14/24 01:4685%70-130 VPO Surrogate: N-EtFOSAA-D5 EPA 537 05/14/24 01:4682%70-130 VPO mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 ** This report shows results reprocessed at lower reporting limits (RL) to assist with initial monitoring required by Final PFAS Drinking Water Regulation. ** Weber Basin WCD Central Intertie UCMR5Project Name: Page 14 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Result RDL Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Flag Analyte(s) Per-/Polyfluorinated Alkyl Substances - Batch Quality Control Batch 4E22056 - SPE Blank (4E22056-BLK1)Prepared: 05/22/24 Analyzed: 05/24/24 Perfluorobutanoic acid (PFBA) ND 0.0020 ug/L Perfluoropentanoic acid (PFPeA) ND 0.0020 ug/L Perfluorohexanoic Acid (PFHxA) ND 0.0020 ug/L Perfluoroheptanoic Acid (PFHpA) ND 0.0020 ug/L Perfluorooctanoic Acid (PFOA) ND 0.0020 ug/L Perfluorononanoic Acid (PFNA) ND 0.0020 ug/L Perfluorodecanoic Acid (PFDA) ND 0.0020 ug/L Perfluoroundecanoic Acid (PFUnA) ND 0.0020 ug/L Perfluorododecanoic Acid (PFDoDA) ND 0.0020 ug/L Perfluorobutanesulfonic Acid (PFBS) ND 0.0020 ug/L Perfluoropentanesulfonate (PFPeS) ND 0.0020 ug/L Perfluorohexanesulfonic Acid (PFHxS) ND 0.0020 ug/L Perfluoroheptanesulfonic acid (PFHpS) ND 0.0020 ug/L Perfluorooctanesulfonic Acid (PFOS) ND 0.0020 ug/L 4:2 Fluorotelomer Sulfonate ND 0.0020 ug/L 6:2 Fluorotelomer Sulfonate ND 0.0020 ug/L 8:2 Fluorotelomer Sulfonate ND 0.0020 ug/L Hexafluoropropylene oxide dimer acid (HFPO-DA) ND 0.0020 ug/L 4,8-dioxa-3H-perfluorononan oic Acid (ADONA) ND 0.0020 ug/L 9-chlorohexadecafluoro-3-ox anone-1-sulfonic Acid ND 0.0020 ug/L 11-chloroeicosafluoro 3oxaundecane-1-sulfonic ND 0.0020 ug/L Nonafluoro-3,6-dioxaheptano ic acid (NFDHA) ND 0.0020 ug/L Perfluoro-4-methoxybutanoic acid (PFMBA) ND 0.0020 ug/L mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 UCMR5Project Name: Page 15 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Result RDL Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Flag Analyte(s) Per-/Polyfluorinated Alkyl Substances - Batch Quality Control Batch 4E22056 - SPE Blank (4E22056-BLK1)Prepared: 05/22/24 Analyzed: 05/24/24 Perfluoro-3-methoxypropanoi c acid (PFMPA) ND 0.0020 ug/L Perfluoro(2-ethoxyethane)sul fonic acid (PFEESA) ND 0.0020 ug/L 0.0200 50-200Surrogate: 13C4-PFBA 800.0161 ug/L 0.0200 50-200Surrogate: 13C5-PFPeA 850.0170 ug/L 0.0200 50-200Surrogate: 13C5-PFHxA 860.0172 ug/L 0.0200 50-200Surrogate: 13C4-PFHpA 850.0169 ug/L 0.0200 50-200Surrogate: 13C8-PFOA 850.0171 ug/L 0.0200 50-200Surrogate: 13C9-PFNA 820.0164 ug/L 0.0200 50-200Surrogate: 13C6-PFDA 820.0164 ug/L 0.0200 50-200Surrogate: 13C7-PFUnA 820.0164 ug/L 0.0200 50-200Surrogate: 13C2-PFDoA 820.0164 ug/L 0.0186 50-200Surrogate: 13C3-PFBS 940.0176 ug/L 0.0189 50-200Surrogate: 13C3-PFHxS 920.0174 ug/L 0.0191 50-200Surrogate: 13C8-PFOS 920.0175 ug/L 0.0748 50-200Surrogate: 13C2-4:2 FTS 1010.0754 ug/L 0.0760 50-200Surrogate: 13C2-6:2 FTS 920.0697 ug/L 0.0768 50-200Surrogate: 13C2-8:2 FTS 820.0630 ug/L 0.0200 50-200Surrogate: 13C3-HFPO-DA 780.0155 ug/L mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 UCMR5Project Name: Page 16 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Result RDL Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Flag Analyte(s) Per-/Polyfluorinated Alkyl Substances - Batch Quality Control Batch 4E22056 - SPE LCS (4E22056-BS1)Prepared: 05/22/24 Analyzed: 05/24/24 Perfluorobutanoic acid (PFBA) 0.0026 0.0050 0.00200 50-150131ug/L Perfluoropentanoic acid (PFPeA) 0.0020 0.0030 0.00200 50-150100ug/L Perfluorohexanoic Acid (PFHxA) 0.0020 0.0030 0.00200 50-150101ug/L Perfluoroheptanoic Acid (PFHpA) 0.0021 0.0030 0.00200 50-150105ug/L Perfluorooctanoic Acid (PFOA) 0.0019 0.0040 0.00200 50-15096ug/L Perfluorononanoic Acid (PFNA) 0.0019 0.0040 0.00200 50-15095ug/L Perfluorodecanoic Acid (PFDA) 0.0020 0.0030 0.00200 50-15098ug/L Perfluoroundecanoic Acid (PFUnA) 0.0019 0.0020 0.00200 50-15095ug/L Perfluorododecanoic Acid (PFDoDA) 0.0020 0.0030 0.00200 50-150101ug/L Perfluorobutanesulfonic Acid (PFBS) 0.0017 0.0030 0.00200 50-15086ug/L Perfluoropentanesulfonate (PFPeS) 0.0022 0.0040 0.00200 50-150108ug/L Perfluorohexanesulfonic Acid (PFHxS) 0.0018 0.0030 0.00200 50-15092ug/L Perfluoroheptanesulfonic acid (PFHpS) 0.0015 0.0030 0.00200 50-15077ug/L Perfluorooctanesulfonic Acid (PFOS) 0.0017 0.0040 0.00200 50-15087ug/L 4:2 Fluorotelomer Sulfonate 0.0015 0.0030 0.00200 50-15077ug/L 6:2 Fluorotelomer Sulfonate 0.0020 0.0050 0.00200 50-150100ug/L 8:2 Fluorotelomer Sulfonate 0.0016 0.0050 0.00200 50-15080ug/L Hexafluoropropylene oxide dimer acid (HFPO-DA) 0.0023 0.0050 0.00200 50-150114ug/L 4,8-dioxa-3H-perfluorononan oic Acid (ADONA) 0.0019 0.0030 0.00200 50-15097ug/L 9-chlorohexadecafluoro-3-ox anone-1-sulfonic Acid 0.0020 0.0020 0.00200 50-15098ug/L Nonafluoro-3,6-dioxaheptano ic acid (NFDHA) 0.0019 0.020 0.00200 50-15096ug/L 11-chloroeicosafluoro 3oxaundecane-1-sulfonic 0.0016 0.0050 0.00200 50-15081ug/L Perfluoro-4-methoxybutanoic acid (PFMBA) 0.0019 0.0030 0.00200 50-15094ug/L mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 UCMR5Project Name: Page 17 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Result RDL Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Flag Analyte(s) Per-/Polyfluorinated Alkyl Substances - Batch Quality Control Batch 4E22056 - SPE LCS (4E22056-BS1)Prepared: 05/22/24 Analyzed: 05/24/24 Perfluoro-3-methoxypropanoi c acid (PFMPA) 0.0020 0.0040 0.00200 50-15099ug/L Perfluoro(2-ethoxyethane)sul fonic acid (PFEESA) 0.0020 0.0030 0.00200 50-15099ug/L 0.0200 50-200Surrogate: 13C4-PFBA 860.0173 ug/L 0.0200 50-200Surrogate: 13C5-PFPeA 930.0186 ug/L 0.0200 50-200Surrogate: 13C5-PFHxA 920.0184 ug/L 0.0200 50-200Surrogate: 13C4-PFHpA 900.0180 ug/L 0.0200 50-200Surrogate: 13C8-PFOA 950.0190 ug/L 0.0200 50-200Surrogate: 13C9-PFNA 920.0184 ug/L 0.0200 50-200Surrogate: 13C6-PFDA 920.0183 ug/L 0.0200 50-200Surrogate: 13C7-PFUnA 910.0183 ug/L 0.0200 50-200Surrogate: 13C2-PFDoA 910.0182 ug/L 0.0186 50-200Surrogate: 13C3-PFBS 1010.0188 ug/L 0.0189 50-200Surrogate: 13C3-PFHxS 960.0182 ug/L 0.0191 50-200Surrogate: 13C8-PFOS 990.0190 ug/L 0.0748 50-200Surrogate: 13C2-4:2 FTS 1020.0764 ug/L 0.0760 50-200Surrogate: 13C2-6:2 FTS 960.0729 ug/L 0.0768 50-200Surrogate: 13C2-8:2 FTS 910.0697 ug/L 0.0200 50-200Surrogate: 13C3-HFPO-DA 860.0171 ug/L mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 UCMR5Project Name: Page 18 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Result RDL Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Flag Analyte(s) Per-/Polyfluorinated Alkyl Substances - Batch Quality Control Batch 4E22056 - SPE Matrix Spike (4E22056-MS1)Prepared: 05/22/24 Analyzed: 05/24/24 Source: C4D4222-01 Perfluorobutanoic acid (PFBA) 0.0027 0.0045 0.00180 0.0010 50-15093ug/L Perfluoropentanoic acid (PFPeA) 0.0045 0.0027 0.00180 0.0026 50-150103ug/L Perfluorohexanoic Acid (PFHxA) 0.0040 0.0027 0.00180 0.0026 50-15076ug/L Perfluoroheptanoic Acid (PFHpA) 0.0025 0.0027 0.00180 0.00087 50-15092ug/L Perfluorooctanoic Acid (PFOA) 0.0034 0.0036 0.00180 0.0017 50-15093ug/L Perfluorononanoic Acid (PFNA) 0.0019 0.0036 0.00180 ND 50-150106ug/L Perfluorodecanoic Acid (PFDA) 0.0018 0.0027 0.00180 ND 50-15098ug/L Perfluoroundecanoic Acid (PFUnA) 0.0017 0.0018 0.00180 ND 50-15096ug/L Perfluorododecanoic Acid (PFDoDA) 0.0018 0.0027 0.00180 ND 50-15098ug/L Perfluorobutanesulfonic Acid (PFBS) 0.0026 0.0027 0.00180 ND 50-150142ug/L Perfluoropentanesulfonate (PFPeS) 0.0022 0.0036 0.00180 ND 50-150124ug/L Perfluorohexanesulfonic Acid (PFHxS) 0.0030 0.0027 0.00180 0.0016 50-15076ug/L Perfluoroheptanesulfonic acid (PFHpS) 0.0016 0.0027 0.00180 ND 50-15087ug/L Perfluorooctanesulfonic Acid (PFOS) 0.0019 0.0036 0.00180 ND 50-150105ug/L 4:2 Fluorotelomer Sulfonate 0.0016 0.0027 0.00180 ND 50-15089ug/L 6:2 Fluorotelomer Sulfonate 0.0018 0.0045 0.00180 ND 50-150101ug/L 8:2 Fluorotelomer Sulfonate 0.0014 0.0045 0.00180 ND 50-15076ug/L Hexafluoropropylene oxide dimer acid (HFPO-DA) 0.0016 0.0045 0.00180 ND 50-15090ug/L 4,8-dioxa-3H-perfluorononan oic Acid (ADONA) 0.0017 0.0027 0.00180 ND 50-15093ug/L 9-chlorohexadecafluoro-3-ox anone-1-sulfonic Acid 0.0018 0.0018 0.00180 ND 50-150102ug/L 11-chloroeicosafluoro 3oxaundecane-1-sulfonic 0.0017 0.0045 0.00180 ND 50-15094ug/L Nonafluoro-3,6-dioxaheptano ic acid (NFDHA) 0.0014 0.018 0.00180 ND 50-15076ug/L Perfluoro-4-methoxybutanoic acid (PFMBA) 0.0017 0.0027 0.00180 ND 50-15093ug/L mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 UCMR5Project Name: Page 19 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Result RDL Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Flag Analyte(s) Per-/Polyfluorinated Alkyl Substances - Batch Quality Control Batch 4E22056 - SPE Matrix Spike (4E22056-MS1)Prepared: 05/22/24 Analyzed: 05/24/24 Source: C4D4222-01 Perfluoro-3-methoxypropanoi c acid (PFMPA) 0.0018 0.0036 0.00180 ND 50-15099ug/L Perfluoro(2-ethoxyethane)sul fonic acid (PFEESA) 0.0015 0.0027 0.00180 ND 50-15084ug/L 0.0180 50-200Surrogate: 13C4-PFBA 770.0139 ug/L 0.0180 50-200Surrogate: 13C5-PFPeA 800.0143 ug/L 0.0180 50-200Surrogate: 13C5-PFHxA 870.0156 ug/L 0.0180 50-200Surrogate: 13C4-PFHpA 870.0157 ug/L 0.0180 50-200Surrogate: 13C8-PFOA 850.0153 ug/L 0.0180 50-200Surrogate: 13C9-PFNA 860.0154 ug/L 0.0180 50-200Surrogate: 13C6-PFDA 890.0161 ug/L 0.0180 50-200Surrogate: 13C7-PFUnA 870.0157 ug/L 0.0180 50-200Surrogate: 13C2-PFDoA 890.0161 ug/L 0.0168 50-200Surrogate: 13C3-PFBS 1020.0172 ug/L 0.0170 50-200Surrogate: 13C3-PFHxS 1010.0172 ug/L 0.0172 50-200Surrogate: 13C8-PFOS 940.0161 ug/L 0.0673 50-200Surrogate: 13C2-4:2 FTS 1050.0707 ug/L 0.0683 50-200Surrogate: 13C2-6:2 FTS 960.0659 ug/L 0.0691 50-200Surrogate: 13C2-8:2 FTS 1000.0688 ug/L 0.0180 50-200Surrogate: 13C3-HFPO-DA 780.0140 ug/L mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 UCMR5Project Name: Page 20 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Result RDL Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Flag Analyte(s) Per-/Polyfluorinated Alkyl Substances - Batch Quality Control Batch 4E22056 - SPE Matrix Spike Dup (4E22056-MSD1)Prepared: 05/22/24 Analyzed: 05/24/24 Source: C4D4222-01 Perfluorobutanoic acid (PFBA) 0.0028 0.0050 0.00187 0.0010 3050-15097 6ug/L Perfluoropentanoic acid (PFPeA) 0.0050 0.0030 0.00187 0.0026 3050-150123 10ug/L Perfluorohexanoic Acid (PFHxA) 0.0044 0.0030 0.00187 0.0026 3050-15096 10ug/L Perfluoroheptanoic Acid (PFHpA) 0.0025 0.0030 0.00187 0.00087 3050-15090 1ug/L Perfluorooctanoic Acid (PFOA) 0.0033 0.0040 0.00187 0.0017 3050-15088 1ug/L Perfluorononanoic Acid (PFNA) 0.0018 0.0040 0.00187 ND 3050-15097 4ug/L Perfluorodecanoic Acid (PFDA) 0.0019 0.0030 0.00187 ND 3050-150100 6ug/L Perfluoroundecanoic Acid (PFUnA) 0.0019 0.0020 0.00187 ND 3050-150103 10ug/L Perfluorododecanoic Acid (PFDoDA) 0.0020 0.0030 0.00187 ND 3050-150107 13ug/L Perfluorobutanesulfonic Acid (PFBS) 0.0025 0.0030 0.00187 ND 3050-150135 0.6ug/L Perfluoropentanesulfonate (PFPeS) 0.0021 0.0040 0.00187 ND 3050-150110 8ug/L Perfluorohexanesulfonic Acid (PFHxS) 0.0031 0.0030 0.00187 0.0016 3050-15080 5ug/L Perfluoroheptanesulfonic acid (PFHpS) 0.0020 0.0030 0.00187 ND 3050-150105 23ug/L Perfluorooctanesulfonic Acid (PFOS) 0.0017 0.0040 0.00187 ND 3050-15092 9ug/L 4:2 Fluorotelomer Sulfonate 0.0019 0.0030 0.00187 ND 3050-15099 14ug/L 8:2 Fluorotelomer Sulfonate 0.0019 0.0050 0.00187 ND 3050-15099ug/L Hexafluoropropylene oxide dimer acid (HFPO-DA) 0.0019 0.0050 0.00187 ND 3050-150101 16ug/L 4,8-dioxa-3H-perfluorononan oic Acid (ADONA) 0.0016 0.0030 0.00187 ND 3050-15086 4ug/L 9-chlorohexadecafluoro-3-ox anone-1-sulfonic Acid 0.0020 0.0020 0.00187 ND 3050-150107 9ug/L Nonafluoro-3,6-dioxaheptano ic acid (NFDHA) 0.0015 0.020 0.00187 ND 3050-15078 7ug/L 11-chloroeicosafluoro 3oxaundecane-1-sulfonic 0.0016 0.0050 0.00187 ND 3050-15084 7ug/L Perfluoro-4-methoxybutanoic acid (PFMBA) 0.0017 0.0030 0.00187 ND 3050-15093 4ug/L mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 UCMR5Project Name: Page 21 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Result RDL Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Flag Analyte(s) Per-/Polyfluorinated Alkyl Substances - Batch Quality Control Batch 4E22056 - SPE Matrix Spike Dup (4E22056-MSD1)Prepared: 05/22/24 Analyzed: 05/24/24 Source: C4D4222-01 Perfluoro-3-methoxypropanoi c acid (PFMPA) 0.0020 0.0040 0.00187 ND 3050-150106 11ug/L Perfluoro(2-ethoxyethane)sul fonic acid (PFEESA) 0.0018 0.0030 0.00187 ND 3050-15098 19ug/L 0.0187 50-200Surrogate: 13C4-PFBA 620.0117 ug/L 0.0187 50-200Surrogate: 13C5-PFPeA 630.0118 ug/L 0.0187 50-200Surrogate: 13C5-PFHxA 640.0120 ug/L 0.0187 50-200Surrogate: 13C4-PFHpA 640.0120 ug/L 0.0187 50-200Surrogate: 13C8-PFOA 650.0121 ug/L 0.0187 50-200Surrogate: 13C9-PFNA 660.0124 ug/L 0.0187 50-200Surrogate: 13C6-PFDA 710.0133 ug/L 0.0187 50-200Surrogate: 13C7-PFUnA 710.0133 ug/L 0.0187 50-200Surrogate: 13C2-PFDoA 750.0140 ug/L 0.0175 50-200Surrogate: 13C3-PFBS 960.0168 ug/L 0.0177 50-200Surrogate: 13C3-PFHxS 990.0175 ug/L 0.0179 50-200Surrogate: 13C8-PFOS 890.0160 ug/L 0.0700 50-200Surrogate: 13C2-4:2 FTS 1020.0713 ug/L 0.0712 50-200Surrogate: 13C2-6:2 FTS 890.0637 ug/L 0.0719 50-200Surrogate: 13C2-8:2 FTS 880.0632 ug/L 0.0187 50-200Surrogate: 13C3-HFPO-DA 590.0111 ug/L mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 UCMR5Project Name: Page 22 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Result RDL Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Flag Analyte(s) Per-/Polyfluorinated Alkyl Substances - Batch Quality Control Batch 4E22056 - SPE Reference (4E22056-SRM1)Prepared: 05/22/24 Analyzed: 05/24/24 Perfluorobutanoic acid (PFBA) 0.0361 0.0050 0.0400 70-13090ug/L Perfluoropentanoic acid (PFPeA) 0.0366 0.0030 0.0400 70-13091ug/L Perfluorohexanoic Acid (PFHxA) 0.0371 0.0030 0.0400 70-13093ug/L Perfluoroheptanoic Acid (PFHpA) 0.0348 0.0030 0.0400 70-13087ug/L Perfluorooctanoic Acid (PFOA) 0.0360 0.0040 0.0400 70-13090ug/L Perfluorononanoic Acid (PFNA) 0.0362 0.0040 0.0400 70-13090ug/L Perfluorodecanoic Acid (PFDA) 0.0360 0.0030 0.0400 70-13090ug/L Perfluoroundecanoic Acid (PFUnA) 0.0364 0.0020 0.0400 70-13091ug/L Perfluorododecanoic Acid (PFDoDA) 0.0355 0.0030 0.0400 70-13089ug/L Perfluorobutanesulfonic Acid (PFBS) 0.0342 0.0030 0.0400 70-13086ug/L Perfluoropentanesulfonate (PFPeS) 0.0329 0.0040 0.0400 70-13082ug/L Perfluorohexanesulfonic Acid (PFHxS) 0.0350 0.0030 0.0400 70-13088ug/L Perfluoroheptanesulfonic acid (PFHpS) 0.0398 0.0030 0.0400 70-13099ug/L Perfluorooctanesulfonic Acid (PFOS) 0.0377 0.0040 0.0400 70-13094ug/L 4:2 Fluorotelomer Sulfonate 0.0360 0.0030 0.0400 70-13090ug/L 6:2 Fluorotelomer Sulfonate 0.0353 0.0050 0.0400 70-13088ug/L 8:2 Fluorotelomer Sulfonate 0.0362 0.0050 0.0400 70-13091ug/L Hexafluoropropylene oxide dimer acid (HFPO-DA) 0.0356 0.0050 0.0400 70-13089ug/L 4,8-dioxa-3H-perfluorononan oic Acid (ADONA) 0.0360 0.0030 0.0400 70-13090ug/L 9-chlorohexadecafluoro-3-ox anone-1-sulfonic Acid 0.0365 0.0020 0.0400 70-13091ug/L Nonafluoro-3,6-dioxaheptano ic acid (NFDHA) 0.0370 0.020 0.0400 70-13092ug/L 11-chloroeicosafluoro 3oxaundecane-1-sulfonic 0.0370 0.0050 0.0400 70-13093ug/L Perfluoro-4-methoxybutanoic acid (PFMBA) 0.0367 0.0030 0.0400 70-13092ug/L mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 UCMR5Project Name: Page 23 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Result RDL Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Flag Analyte(s) Per-/Polyfluorinated Alkyl Substances - Batch Quality Control Batch 4E22056 - SPE Reference (4E22056-SRM1)Prepared: 05/22/24 Analyzed: 05/24/24 Perfluoro-3-methoxypropanoi c acid (PFMPA) 0.0379 0.0040 0.0400 70-13095ug/L Perfluoro(2-ethoxyethane)sul fonic acid (PFEESA) 0.0361 0.0030 0.0400 70-13090ug/L 0.0200 70-130Surrogate: 13C4-PFBA 980.0195 ug/L 0.0200 70-130Surrogate: 13C5-PFPeA 990.0197 ug/L 0.0200 70-130Surrogate: 13C5-PFHxA 970.0194 ug/L 0.0200 70-130Surrogate: 13C4-PFHpA 990.0197 ug/L 0.0200 70-130Surrogate: 13C8-PFOA 1020.0203 ug/L 0.0200 70-130Surrogate: 13C9-PFNA 1000.0200 ug/L 0.0200 70-130Surrogate: 13C6-PFDA 1020.0204 ug/L 0.0200 70-130Surrogate: 13C7-PFUnA 1030.0206 ug/L 0.0200 70-130Surrogate: 13C2-PFDoA 1040.0207 ug/L 0.0186 70-130Surrogate: 13C3-PFBS 1000.0187 ug/L 0.0189 70-130Surrogate: 13C3-PFHxS 990.0186 ug/L 0.0191 70-130Surrogate: 13C8-PFOS 1010.0193 ug/L 0.0748 70-130Surrogate: 13C2-4:2 FTS 990.0737 ug/L 0.0760 70-130Surrogate: 13C2-6:2 FTS 980.0747 ug/L 0.0768 70-130Surrogate: 13C2-8:2 FTS 980.0752 ug/L 0.0200 70-130Surrogate: 13C3-HFPO-DA 960.0192 ug/L mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 UCMR5Project Name: Page 24 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Result RDL Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Flag Analyte(s) Per-/Polyfluorinated Alkyl Substances - Batch Quality Control Result RDL Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Flag Analyte(s) Metals and Metalloids - Batch Quality Control Batch 4E09046 - EPA 200.2 Blank (4E09046-BLK1)Prepared: 05/16/24 Analyzed: 05/20/24 Lithium ND 9.0 ug/L LCS (4E09046-BS1)Prepared: 05/16/24 Analyzed: 05/20/24 Lithium 9.20 9.0 9.00 50-150102ug/L Matrix Spike (4E09046-MS1)Prepared: 05/16/24 Analyzed: 05/20/24 Source: C4E0770-01 Lithium 48.2 9.0 40.0 8.20 70-130100ug/L Matrix Spike Dup (4E09046-MSD1)Prepared: 05/16/24 Analyzed: 05/20/24 Source: C4E0770-01 Lithium 49.0 9.0 40.0 8.20 2070-130102 2ug/L Reference (4E09046-SRM1)Prepared: 05/16/24 Analyzed: 05/20/24 Lithium 40.3 18 40.0 0-200101ug/L mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 UCMR5Project Name: Page 25 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Result RDL Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Flag Analyte(s) Perfluorinated Compounds by EPA 537.1 - Batch Quality Control Batch 4E10042 - SPE Blank (4E10042-BLK1)Prepared: 05/10/24 Analyzed: 05/13/24 N-EtFOSAA ND 0.0020 ug/L N-MeFOSAA ND 0.0020 ug/L Perfluorotridecanoic Acid (PFTrDA) ND 0.0020 ug/L Perfluorotetradecanoic Acid (PFTeDA) ND 0.0020 ug/L 0.0400 70-130Surrogate: 13C2-PFDA 900.0361 ug/L 0.0400 70-130Surrogate: 13C2-PFHxA 980.0393 ug/L 0.0400 70-130Surrogate: 13C3-HFPO-DA 900.0360 ug/L 0.0400 70-130Surrogate: N-EtFOSAA-D5 850.0340 ug/L LCS (4E10042-BS1)Prepared: 05/10/24 Analyzed: 05/14/24 N-EtFOSAA 0.0017 0.0050 0.00200 50-15083ug/L N-MeFOSAA 0.0018 0.0060 0.00200 50-15088ug/L Perfluorotridecanoic Acid (PFTrDA) 0.0016 0.0070 0.00200 50-15078ug/L Perfluorotetradecanoic Acid (PFTeDA) 0.0016 0.0080 0.00200 50-15081ug/L 0.0400 70-130Surrogate: 13C2-PFDA 890.0356 ug/L 0.0400 70-130Surrogate: 13C2-PFHxA 950.0378 ug/L 0.0400 70-130Surrogate: 13C3-HFPO-DA 910.0363 ug/L 0.0400 70-130Surrogate: N-EtFOSAA-D5 810.0326 ug/L Matrix Spike (4E10042-MS1)Prepared: 05/10/24 Analyzed: 05/13/24 Source: C4E0039-03 N-EtFOSAA 0.0010 0.0043 0.00171 ND 50-15061ug/L N-MeFOSAA 0.0015 0.0051 0.00171 ND 50-15086ug/L Perfluorotridecanoic Acid (PFTrDA) 0.0014 0.0060 0.00171 ND 50-15085ug/L Perfluorotetradecanoic Acid (PFTeDA) 0.0012 0.0068 0.00171 ND 50-15069ug/L 0.0341 50-150Surrogate: 13C2-PFDA 890.0305 ug/L 0.0341 50-150Surrogate: 13C2-PFHxA 860.0293 ug/L 0.0341 50-150Surrogate: 13C3-HFPO-DA 810.0277 ug/L 0.0341 50-150Surrogate: N-EtFOSAA-D5 850.0290 ug/L mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 UCMR5Project Name: Page 26 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Result RDL Units Level Spike Result Source %REC %REC Limits RPD RPD Limit Flag Analyte(s) Perfluorinated Compounds by EPA 537.1 - Batch Quality Control Batch 4E10042 - SPE Matrix Spike Dup (4E10042-MSD1)Prepared: 05/10/24 Analyzed: 05/13/24 Source: C4E0039-03 N-EtFOSAA 0.0011 0.0043 0.00172 ND 5050-15066 7ug/L N-MeFOSAA 0.0016 0.0052 0.00172 ND 5050-15090 5ug/L Perfluorotridecanoic Acid (PFTrDA) 0.0015 0.0060 0.00172 ND 5050-15085 0.7ug/L Perfluorotetradecanoic Acid (PFTeDA) 0.0015 0.0069 0.00172 ND 5050-15085 21ug/L 0.0345 50-150Surrogate: 13C2-PFDA 850.0293 ug/L 0.0345 50-150Surrogate: 13C2-PFHxA 900.0309 ug/L 0.0345 50-150Surrogate: 13C3-HFPO-DA 870.0300 ug/L 0.0345 50-150Surrogate: N-EtFOSAA-D5 700.0243 ug/L Reference (4E10042-SRM1)Prepared: 05/10/24 Analyzed: 05/13/24 N-EtFOSAA 0.0216 0.0050 0.0200 70-130108ug/L N-MeFOSAA 0.0214 0.0060 0.0200 70-130107ug/L Perfluorotridecanoic Acid (PFTrDA) 0.0181 0.0070 0.0200 70-13091ug/L Perfluorotetradecanoic Acid (PFTeDA) 0.0214 0.0080 0.0200 70-130107ug/L 0.0400 70-130Surrogate: 13C2-PFDA 1000.0402 ug/L 0.0400 70-130Surrogate: 13C2-PFHxA 1010.0403 ug/L 0.0400 70-130Surrogate: 13C3-HFPO-DA 1040.0418 ug/L 0.0400 70-130Surrogate: N-EtFOSAA-D5 1030.0413 ug/L Reference (4E10042-SRM2)Prepared: 05/10/24 Analyzed: 05/15/24 N-EtFOSAA 0.0200 0.0050 0.0200 0-200100ug/L N-MeFOSAA 0.0196 0.0060 0.0200 0-20098ug/L Perfluorotridecanoic Acid (PFTrDA) 0.0151 0.0070 0.0200 0-20076ug/L Perfluorotetradecanoic Acid (PFTeDA) 0.0203 0.0080 0.0200 0-200101ug/L 0.0400 70-130Surrogate: 13C2-PFDA 1020.0409 ug/L 0.0400 70-130Surrogate: 13C2-PFHxA 1010.0402 ug/L 0.0400 70-130Surrogate: 13C3-HFPO-DA 1020.0408 ug/L 0.0400 70-130Surrogate: N-EtFOSAA-D5 1000.0402 ug/L mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704 UCMR5Project Name: Page 27 of 28Analytical Report: Contact: Darrin Taylor Layton City CorporationClient Name: UCMR5 Quote- AmendedProject Number: Address: Layton, UT 84041 1925 N. Fortlane Report Date: 27-Dec-2024 Work Order Number: 1YesReceived on Ice (Y/N): Temp: °C C4E0039 Notes and Definitions NR: Not Reported ND: Analyte NOT DETECTED at or above the Method Detection Limit (if MDL is reported), otherwise at or above the Reportable Detection Limit (RDL) RDL: Reportable Detection Limit MDL: Method Detection Limit * / (Non-NELAP): NELAP does not offer accreditation for this analyte/method/matrix combination E-STANDARD.RPT This report applies only to the sample(s) analyzed. As a mutual protection to clients, the public, and Babcock Laboratories, Inc., this report is submitted and accepted for the exclusive use of the Client to whom it is addressed. Interpretation and use of the information contained within this report are the sole responsibility of the Client. Babcock Laboratories, Inc. is not responsible for any misinformation or consequences that may result from misinterpretation or improper use of this report. This report is not to be modified or abbreviated in any way. Additionally, this report is not to be used, in whole or in part, in any advertising or publicity matter without written authorization from Babcock Laboratories, Inc. The liability of Babcock Laboratories, Inc. is limited to the actual cost of the requested analyses, unless otherwise agreed upon in writing. There is no other warranty expressed or implied. Enclosed are the analytical results for the submitted sample(s). Babcock Laboratories certify the data presented as part of this report meet the minimum quality standards in the referenced analytical methods. Any exceptions have been noted. Approval cc: Juliett Melissa Machuca For Alexandria L. Guerra mailing P.O. Box 432 Riverside, CA 92502-0432 CA ELAP No. 2698 EPA No. CA00102 NELAP No. OR4035 LACSD No. 10119 P (951) 653-3351 F (951) 653-1662 www.babcocklabs.com location 6100 Quail Valley Court Riverside, CA 92507-0704