Attachment_7a_Xformer_Oil_Results_2022_0002.pdf

JACO Analytical Laboratory 103 12th Ave SW Ephrata, WA 98823 Ph (509) 754-5725 Fax (509) 754-4239

Mineral Standard Test Report

Company: Manufacturer: Report Date:

Address: Serial: Company ID:

City, State: Cooling Type: Unit #:

Substation: MVA: Invoice #:

Sampled by: kV: Syringe # Contact: Gallons: Bottle #

PCB: App Type: Lab Control #

8/8/2022 8/25/2020 12/5/2019 7/2/2019 9/25/2018 11/2/2017 (ppm) <10 <10 <10 <10 <10 <10 (ppm) 101 64 52 53 49 61 (ppm) 33 25 17 20 18 17 (ppm) 7 10 5 6 8 6 (ppm) <1 <1 <1 <1 <1 <1 (ppm) 432 348 325 368 298 348 (ppm) 2398 1635 1509 1929 1148 987 (ppm) 48165 49179 31678 37621 27175 34557 (ppm) 6855 4839 1973 2162 1930 1551 (ppm) 572 447 399 447 373 432 (ppm) 57991 56099 35558 42159 30626 37528

Comments:

8/8/2022 8/25/2020 12/5/2019 7/2/2019 9/25/2018 11/2/2017 Oil Temp: (°C) 37 21 20 52 45 49

D-1533 Moisture (ppm) 15.3 2.8 2.3 2.3 1.0 2.8 D-971 Interfacial Tension (dynes/cm) 34.9 36.6 36.4 41.1 39.7 39.3 D-974 Acid Neutralization (mg KOH/g) 0.02 0.01 0.02 0.02 0.01 0.02 D-1500 Color < 2.0 < 2.5 < 2.5 < 2.5 < 2.0 < 2.0 D-1524 Visual Pass Pass Pass Pass Pass Pass D-877 Dielectric (kV) 50.1 52.7 57.8 55.2 53.3 D-1816 Dielectric (kV 1mm-C) D-1816 Dielectric (kV 2mm-C) 49.1 42.5 69.9 66.1 69.0 60.6 D-1298 Specific Gravity 0.8830 0.8810 0.8820 0.8810 0.8820 0.8840 D-924 Pwr Factor (25°C) (%) 0.079 0.053 0.035 0.048 0.030 0.031 D-924 Pwr Factor (100°C) (%) 1.795 1.449 1.384 1.316 0.949 0.765 D-1698 Sediment (%) <0.001 D-1275B Corrosive Sulfur N-1b EPA 8082 PCB by Method 8082 (ppm) <1

Relative Saturation (%) 14.1% 4.9% 4.2% 1.2% 0.7% 1.7%

Comments:

37E11681-08122022

Oil Quality

Acetylene (C2H2): (ppm) Carbon Monoxide (CO): (ppm) Carbon Dioxide (CO2): (ppm)

Collection Date:

Hydrogen (H2): (ppm) Methane (CH4): (ppm) Ethane (C2H6): (ppm)

Meets condition 2 in IEEE Std. C57.104-2008.

9/2/2022

KN6A-C

NP

37E90487

Nitrogen (N2): (ppm)

USBR Lower Colorado Region 500 Fir Street Boulder City, NV 89005 Hoover

Smit 219799

FOW

N. Vue / J. Ongley 230

Our test results relate only to the sample tested. The analyses, opinions, or interpretations contained in this report are based upon material and information supplied by the client. Any interpretations or opinions expressed represent the best judgment of JACO Analytical Laboratory, Inc. JACO Analytical Laboratory, Inc. assumes no responsibility and makes no warranty or representation, expressed or implied as to the condition, productivity, or proper operation of any equipment or other property by which this report may be used or relied upon for any reason whatsoever. JACO Analytical Laboratory, Inc. does not imply that the contents of the sample received by this laboratory are the same as all such material in the environment from which the sample was taken. This test report shall not be reproduced except in full, without written approval of the laboratory.

Dielectric is less than the recommended minimum of 50 kV.

PCB result by JACO Analytical Laboratory NY NELAC Cert. Lab # 11384

Fails IEEE Std. C57.106-2015 acceptable levels.

37E11681 37E11681

TRN

Combustible gas levels indicate cellulose insulation aging. Recommend retest in 1 year.

Total Combustible Gas:

Total Gas in Oil:

Collection Date:

Oxygen (O2): (ppm)

Brandon Sparks <1 ppm

Ethylene (C2H4): (ppm)

ASTM D3612C Dissolved Gas Analysis (Expressed in ppm’s)

ISO/IEC 17025:2017 PJLA/Testing Accreditation # 74648 Rev 07/07/2021 Page 1 of 1

Thomas C Shore, Director__----_____

Ph (509) 754-5725 Fax (509) 754-4239

Furanic Compounds Inhibitor and Metals Test Report

Company: Manufacturer: Report Date:

Address: Serial: Company ID:

City, State: Cooling Type: Unit #:

Substation: MVA: Invoice #:

Sampled by: kV: Syringe # Contact: Gallons: Bottle #

App Type: Lab Control #

8/8/2022 8/25/2020 12/5/2019 7/2/2019 9/25/2018 11/2/2017

(DBPC) (%) 0.086 0.087 1.01 0.095 0.094 0.096

Comments:

8/8/2022 8/25/2020 12/5/2019 7/2/2019 9/25/2018 11/2/2017 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 1 0 0 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0 (ppm) 1 0 0 1 0 2 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0

Comments:

11/2/2017

<10 <10 <10 <10 <10

>1003

Collection Date:

Silver (Ag) Aluminum (Al) Copper (Cu)

5-hydroxymethyl-2-furaldehyde (5H2F):

Furanic Compound

Zinc (Zn) No apparent Issues with wear metals at sampling.

1. This test is conducted by a subcontracted laboratory.

Collection Date:

Iron (Fe) Lead (Pb) Silicon (Si) Tin (Sn)

9/2/2022

KN6A-C

NP

37E90487

USBR Lower Colorado Region 500 Fir Street Boulder City, NV 89005 Hoover

Smit 219799

ASTM D-2668 Oxidation Inhibitor1,2

Collection Date:

2,6-ditertiary-butyl paracresol

1. This test is conducted by a subcontracted laboratory. 2. Subcontracted laboratory has received ISO Standard 17025 accreditation for this test.

ASTM D-6595 Metals in Oil Analysis1

Exceeds limit for in-service oil Type I (0.0% min and 0.08% max). Acceptable for in-service oil Type II (0.08% min and 0.3% max).

Diagnostics: Reporting Limit 10ppb. New insulation with a high degree of mechanical strength will typically have a Degree of Polmerization (DP) of 1000-1300. “Middle Aged” paper is approximately 500 and paper with less than 250 is in its “Old Age”. Severely degraded insulation with a DP of 150 or less will have very little mechanical strength and may result in a transformer failure. Estimates are based on transformers filled with mineral oil. Estimated DP based upon Chendong model study.

Estimated DP:

FOW

ASTM D-5837 Furans in Oil Analysis

N. Vue / J. Ongley 230 37E11681 37E11681

TRN

Brandon Sparks 7200

37E11681-08122022

Reporting Limit = 10 ppb furfuryl alcohol (FF):

2-furaldehyde (2FAL):

2-acetylfuran (2AF):

5-methyl-2-furaldehyde (5M2F):

Rev 04/05/2022 Page 1 of 1

Thomas C Shore, Director__----__

Ph (509) 754-5725 Fax (509) 754-4239

Mineral Standard Test Report

Company: Manufacturer: Report Date:

Address: Serial: Company ID:

City, State: Cooling Type: Unit #:

Substation: MVA: Invoice #:

Sampled by: kV: Syringe # Contact: Gallons: Bottle #

PCB: App Type: Lab Control #

8/8/2022 8/25/2020 12/5/2019 7/2/2019 9/25/2018 11/2/2017 (ppm) <10 <10 <10 <10 <10 <10 (ppm) 118 74 64 72 60 66 (ppm) 43 31 22 28 23 20 (ppm) 6 8 5 5 8 5 (ppm) <1 <1 <1 <1 <1 <1 (ppm) 419 324 332 407 309 310 (ppm) 2447 1667 1653 3088 1516 1100 (ppm) 55841 34458 33448 42243 29630 32528 (ppm) 10252 1456 1704 2805 2267 1533 (ppm) 585 437 422 512 401 401 (ppm) 69123 38018 37228 48648 33814 35562

Comments:

8/8/2022 8/25/2020 12/5/2019 7/2/2019 9/25/2018 11/2/2017 Oil Temp: (°C) 68 22 30 59 60 57

D-1533 Moisture (ppm) 11.4 1.0 1.4 6.3 10.2 4.0 D-971 Interfacial Tension (dynes/cm) 38.8 35.5 35.8 41.8 38.2 40.9 D-974 Acid Neutralization (mg KOH/g) 0.02 0.01 0.02 0.01 0.01 0.01 D-1500 Color < 2.5 < 2.5 < 2.5 < 2.5 < 2.0 < 2.0 D-1524 Visual Pass Pass Pass Pass Pass Pass D-877 Dielectric (kV) 53.4 53.1 50.7 54.5 55.8 D-1816 Dielectric (kV 1mm-C) D-1816 Dielectric (kV 2mm-C) 63.8 60.8 71.9 69.7 50.8 44.6 D-1298 Specific Gravity 0.8830 0.8800 0.8820 0.8820 0.8830 0.8830 D-924 Pwr Factor (25°C) (%) 0.047 0.023 0.030 0.051 0.161 0.035 D-924 Pwr Factor (100°C) (%) 1.085 0.699 1.343 1.307 3.682 0.989 D-1698 Sediment (%) <0.001 D-1275B Corrosive Sulfur N-3a EPA 8082 PCB by Method 8082 (ppm) <1

Relative Saturation (%) 3.7% 1.7% 1.7% 2.7% 4.2% 1.8%

Comments: Meets IEEE Std. C57.106-2015 acceptable levels.

37E11671 37E11671

TRN

Combustible gas levels indicate cellulose insulation aging. Recommend retest in 1 year.

Total Combustible Gas:

Total Gas in Oil:

Collection Date:

Oxygen (O2): (ppm)

Brandon Sparks <1 ppm

Ethylene (C2H4): (ppm)

ASTM D3612C Dissolved Gas Analysis (Expressed in ppm’s)

Our test results relate only to the sample tested. The analyses, opinions, or interpretations contained in this report are based upon material and information supplied by the client. Any interpretations or opinions expressed represent the best judgment of JACO Analytical Laboratory, Inc. JACO Analytical Laboratory, Inc. assumes no responsibility and makes no warranty or representation, expressed or implied as to the condition, productivity, or proper operation of any equipment or other property by which this report may be used or relied upon for any reason whatsoever. JACO Analytical Laboratory, Inc. does not imply that the contents of the sample received by this laboratory are the same as all such material in the environment from which the sample was taken. This test report shall not be reproduced except in full, without written approval of the laboratory.

PCB result by JACO Analytical Laboratory NY NELAC Cert. Lab # 11384

9/2/2022

KN6A-B

NP

37E90487

Nitrogen (N2): (ppm)

USBR Lower Colorado Region 500 Fir Street Boulder City, NV 89005 Hoover

Smit 219800

FOW

N. Vue / J. Ongley 230

37E11671-08122022

Oil Quality

Acetylene (C2H2): (ppm) Carbon Monoxide (CO): (ppm) Carbon Dioxide (CO2): (ppm)

Collection Date:

Hydrogen (H2): (ppm) Methane (CH4): (ppm) Ethane (C2H6): (ppm)

Meets condition 2 in IEEE Std. C57.104-2008.

ISO/IEC 17025:2017 PJLA/Testing Accreditation # 74648 Rev 07/07/2021 Page 1 of 1

Ph (509) 754-5725 Fax (509) 754-4239

Furanic Compounds Inhibitor and Metals Test Report

Company: Manufacturer: Report Date:

Address: Serial: Company ID:

City, State: Cooling Type: Unit #:

Substation: MVA: Invoice #:

Sampled by: kV: Syringe # Contact: Gallons: Bottle #

App Type: Lab Control #

8/8/2022 8/25/2020 12/5/2019 7/2/2019 9/25/2018 11/2/2017

(DBPC) (%) 0.086 0.088 0.095 0.107 0.098 0.095

Comments:

8/8/2022 8/25/2020 12/5/2019 7/2/2019 9/25/2018 11/2/2017 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 1 0 0 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 3 10 4 (ppm) 0 0 0 0 0 0 (ppm) 1 0 0 0 0 0 (ppm) 0 0 0 0 0 0

Comments:

11/2/2017

<10 <10 <10 <10 <10

>1003

Collection Date:

Silver (Ag) Aluminum (Al) Copper (Cu)

5-hydroxymethyl-2-furaldehyde (5H2F):

Furanic Compound

Zinc (Zn) No apparent Issues with wear metals at sampling.

1. This test is conducted by a subcontracted laboratory.

Collection Date:

Iron (Fe) Lead (Pb) Silicon (Si) Tin (Sn)

9/2/2022

KN6A-B

NP

37E90487

USBR Lower Colorado Region 500 Fir Street Boulder City, NV 89005 Hoover

Smit 219800

ASTM D-2668 Oxidation Inhibitor1,2

Collection Date:

2,6-ditertiary-butyl paracresol

1. This test is conducted by a subcontracted laboratory. 2. Subcontracted laboratory has received ISO Standard 17025 accreditation for this test.

ASTM D-6595 Metals in Oil Analysis1

Exceeds limit for in-service oil Type I (0.0% min and 0.08% max). Acceptable for in-service oil Type II (0.08% min and 0.3% max).

Diagnostics: Reporting Limit 10ppb. New insulation with a high degree of mechanical strength will typically have a Degree of Polmerization (DP) of 1000-1300. “Middle Aged” paper is approximately 500 and paper with less than 250 is in its “Old Age”. Severely degraded insulation with a DP of 150 or less will have very little mechanical strength and may result in a transformer failure. Estimates are based on transformers filled with mineral oil. Estimated DP based upon Chendong model study.

Estimated DP:

FOW

ASTM D-5837 Furans in Oil Analysis

N. Vue / J. Ongley 230 37E11671 37E11671

TRN

Brandon Sparks 7200

37E11671-08122022

Reporting Limit = 10 ppb furfuryl alcohol (FF):

2-furaldehyde (2FAL):

Ph (509) 754-5725 Fax (509) 754-4239

Mineral Standard Test Report

Company: Manufacturer: Report Date:

Address: Serial: Company ID:

City, State: Cooling Type: Unit #:

Substation: MVA: Invoice #:

Sampled by: kV: Syringe # Contact: Gallons: Bottle #

PCB: App Type: Lab Control #

8/8/2022 8/25/2020 12/5/2019 7/3/2019 9/25/2018 11/2/2017 (ppm) <10 <10 <10 <10 <10 <10 (ppm) 102 65 54 57 47 62 (ppm) 29 25 17 23 18 18 (ppm) 7 9 5 6 7 6 (ppm) <1 <1 <1 <1 <1 <1 (ppm) 476 351 340 413 268 345 (ppm) 1779 1598 1490 2679 1083 1071 (ppm) 63905 38250 35141 44875 26729 35498 (ppm) 11108 1790 2067 2992 1982 1389 (ppm) 615 450 416 498 340 431 (ppm) 77407 42088 39114 51045 30134 38389

Comments:

8/8/2022 8/25/2020 12/5/2019 7/3/2019 9/25/2018 11/2/2017 Oil Temp: (°C) 37 21 20 41 40 50

D-1533 Moisture (ppm) 13.1 2.3 2.3 2.8 6.3 4.0 D-971 Interfacial Tension (dynes/cm) 33.1 35.9 36.2 42.4 38.9 32.8 D-974 Acid Neutralization (mg KOH/g) 0.02 0.02 0.02 0.02 0.01 0.02 D-1500 Color < 2.0 < 2.5 < 2.5 < 2.5 < 2.0 < 2.0 D-1524 Visual Pass Pass Pass Pass Pass Pass D-877 Dielectric (kV) 52.3 50.8 48.9 55.7 56.7 D-1816 Dielectric (kV 1mm-C) D-1816 Dielectric (kV 2mm-C) 34.4 51.1 65.5 61.7 43.6 47.2 D-1298 Specific Gravity 0.8830 0.8810 0.8830 0.8830 0.8830 0.8830 D-924 Pwr Factor (25°C) (%) 0.033 0.023 0.018 0.027 0.099 0.053 D-924 Pwr Factor (100°C) (%) 1.194 0.656 0.792 0.742 2.525 2.091 D-1698 Sediment (%) <0.001 D-1275B Corrosive Sulfur N-3a EPA 8082 PCB by Method 8082 (ppm) <1

Relative Saturation (%) 12.1% 4.0% 4.2% 2.2% 5.2% 2.3%

Comments:

37E11672-08122022

Oil Quality

Acetylene (C2H2): (ppm) Carbon Monoxide (CO): (ppm) Carbon Dioxide (CO2): (ppm)

Collection Date:

Hydrogen (H2): (ppm) Methane (CH4): (ppm) Ethane (C2H6): (ppm)

Meets condition 2 in IEEE Std. C57.104-2008.

9/2/2022

KN6A-A

NP

37E90487

Nitrogen (N2): (ppm)

USBR Lower Colorado Region 500 Fir Street Boulder City, NV 89005 Hoover

Smit 219801

FOW

N. Vue / J. Ongley 230

Our test results relate only to the sample tested. The analyses, opinions, or interpretations contained in this report are based upon material and information supplied by the client. Any interpretations or opinions expressed represent the best judgment of JACO Analytical Laboratory, Inc. JACO Analytical Laboratory, Inc. assumes no responsibility and makes no warranty or representation, expressed or implied as to the condition, productivity, or proper operation of any equipment or other property by which this report may be used or relied upon for any reason whatsoever. JACO Analytical Laboratory, Inc. does not imply that the contents of the sample received by this laboratory are the same as all such material in the environment from which the sample was taken. This test report shall not be reproduced except in full, without written approval of the laboratory.

Dielectric is less than the recommended minimum of 50 kV.

PCB result by JACO Analytical Laboratory NY NELAC Cert. Lab # 11384

Fails IEEE Std. C57.106-2015 acceptable levels.

37E11672 37E11672

TRN

Combustible gas levels indicate cellulose insulation aging. Recommend retest in 1 year.

Total Combustible Gas:

Total Gas in Oil:

Collection Date:

Oxygen (O2): (ppm)

Brandon Sparks <1 ppm

Ethylene (C2H4): (ppm)

ASTM D3612C Dissolved Gas Analysis (Expressed in ppm’s)

ISO/IEC 17025:2017 PJLA/Testing Accreditation # 74648 Rev 07/07/2021 Page 1 of 1

Ph (509) 754-5725 Fax (509) 754-4239

Furanic Compounds Inhibitor and Metals Test Report

Company: Manufacturer: Report Date:

Address: Serial: Company ID:

City, State: Cooling Type: Unit #:

Substation: MVA: Invoice #:

Sampled by: kV: Syringe # Contact: Gallons: Bottle #

App Type: Lab Control #

8/8/2022 8/25/2020 12/5/2019 7/3/2019 9/25/2018 11/2/2017

(DBPC) (%) 0.088 0.093 0.129 0.109 0.112 0.091

Comments:

8/8/2022 8/25/2020 12/5/2019 7/3/2019 9/25/2018 11/2/2017 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 1 0 0 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 1 0 (ppm) 0 0 0 0 0 0 (ppm) 1 0 0 0 0 0 (ppm) 0 0 0 0 0 0

Comments:

11/2/2017

<10 <10 <10 <10 <10

>1003

Reporting Limit = 10 ppb furfuryl alcohol (FF):

2-furaldehyde (2FAL):

2-acetylfuran (2AF):

5-methyl-2-furaldehyde (5M2F):

Diagnostics: Reporting Limit 10ppb. New insulation with a high degree of mechanical strength will typically have a Degree of Polmerization (DP) of 1000-1300. “Middle Aged” paper is approximately 500 and paper with less than 250 is in its “Old Age”. Severely degraded insulation with a DP of 150 or less will have very little mechanical strength and may result in a transformer failure. Estimates are based on transformers filled with mineral oil. Estimated DP based upon Chendong model study.

Estimated DP:

FOW

ASTM D-5837 Furans in Oil Analysis

N. Vue / J. Ongley 230 37E11672 37E11672

TRN

Brandon Sparks 7200

37E11672-08122022

ASTM D-2668 Oxidation Inhibitor1,2

Collection Date:

2,6-ditertiary-butyl paracresol

1. This test is conducted by a subcontracted laboratory. 2. Subcontracted laboratory has received ISO Standard 17025 accreditation for this test.

ASTM D-6595 Metals in Oil Analysis1

Exceeds limit for in-service oil Type I (0.0% min and 0.08% max). Acceptable for in-service oil Type II (0.08% min and 0.3% max).

9/2/2022

KN6A-A

NP

37E90487

USBR Lower Colorado Region 500 Fir Street Boulder City, NV 89005 Hoover

Smit 219801

Collection Date:

Silver (Ag) Aluminum (Al) Copper (Cu)

5-hydroxymethyl-2-furaldehyde (5H2F):

Furanic Compound

Zinc (Zn) No apparent Issues with wear metals at sampling.

1. This test is conducted by a subcontracted laboratory.

Collection Date:

Iron (Fe) Lead (Pb) Silicon (Si) Tin (Sn)

Ph (509) 754-5725 Fax (509) 754-4239

Mineral Standard Test Report

Company: Manufacturer: Report Date:

Address: Serial: Company ID:

City, State: Cooling Type: Unit #:

Substation: MVA: Invoice #:

Sampled by: kV: Syringe # Contact: Gallons: Bottle #

PCB: App Type: Lab Control #

8/8/2022 8/25/2020 12/5/2019 7/3/2019 9/25/2018 11/2/2017 (ppm) <10 <10 <10 <10 <10 <10 (ppm) 142 77 84 95 78 100 (ppm) 63 33 42 48 44 43 (ppm) 5 10 3 4 6 4 (ppm) <1 <1 <1 <1 <1 <1 (ppm) 320 349 241 266 213 257 (ppm) 1418 2089 1410 1857 1205 1138 (ppm) 57299 38155 29432 35495 28293 30250 (ppm) 13324 2093 1908 3028 2567 1300 (ppm) 529 468 370 413 341 404 (ppm) 72571 42807 33119 40793 32407 33092

Comments:

8/8/2022 8/25/2020 12/5/2019 7/3/2019 9/25/2018 11/2/2017 Oil Temp: (°C) 44 25 35 46 30 37

D-1533 Moisture (ppm) 10.8 2.3 1.7 2.8 2.3 4.5 D-971 Interfacial Tension (dynes/cm) 35.3 37.0 37.3 37.4 38.6 36.4 D-974 Acid Neutralization (mg KOH/g) 0.01 0.02 0.02 0.02 0.01 0.02 D-1500 Color < 2.5 < 2.5 < 2.5 < 2.5 < 2.5 < 2.5 D-1524 Visual Pass Pass Pass Pass Pass Pass D-877 Dielectric (kV) 56.0 49.8 56.0 52.0 56.4 D-1816 Dielectric (kV 1mm-C) D-1816 Dielectric (kV 2mm-C) 40.2 47.3 72.4 59.5 51.7 70.0 D-1298 Specific Gravity 0.8840 0.8810 0.8820 0.8820 0.8850 0.8840 D-924 Pwr Factor (25°C) (%) 0.049 0.070 0.023 0.042 0.070 0.042 D-924 Pwr Factor (100°C) (%) 1.365 2.149 0.899 0.964 1.491 0.960 D-1698 Sediment (%) <0.001 D-1275B Corrosive Sulfur N-1b EPA 8082 PCB by Method 8082 (ppm) <1

Relative Saturation (%) 7.7% 3.4% 1.7% 1.9% 2.8% 4.2%

Comments: Fails IEEE Std. C57.106-2015 acceptable levels.

37E11682 37E11682

TRN

Combustible gas levels indicate mild oil overheating. Recommend retest in 1 year.

Total Combustible Gas:

Total Gas in Oil:

Collection Date:

Oxygen (O2): (ppm)

Brandon Sparks <1 ppm

Ethylene (C2H4): (ppm)

ASTM D3612C Dissolved Gas Analysis (Expressed in ppm’s)

Our test results relate only to the sample tested. The analyses, opinions, or interpretations contained in this report are based upon material and information supplied by the client. Any interpretations or opinions expressed represent the best judgment of JACO Analytical Laboratory, Inc. JACO Analytical Laboratory, Inc. assumes no responsibility and makes no warranty or representation, expressed or implied as to the condition, productivity, or proper operation of any equipment or other property by which this report may be used or relied upon for any reason whatsoever. JACO Analytical Laboratory, Inc. does not imply that the contents of the sample received by this laboratory are the same as all such material in the environment from which the sample was taken. This test report shall not be reproduced except in full, without written approval of the laboratory.

Dielectric is less than the recommended minimum of 50 kV.

PCB result by JACO Analytical Laboratory NY NELAC Cert. Lab # 11384

9/2/2022

KN8A-A

NP

37E90487

Nitrogen (N2): (ppm)

USBR Lower Colorado Region 500 Fir Street Boulder City, NV 89005 Hoover

Smit 219802

FOW

N. Vue / J. Ongley 230

37E11682-08122022

Oil Quality

Acetylene (C2H2): (ppm) Carbon Monoxide (CO): (ppm) Carbon Dioxide (CO2): (ppm)

Collection Date:

Hydrogen (H2): (ppm) Methane (CH4): (ppm) Ethane (C2H6): (ppm)

Meets condition 2 in IEEE Std. C57.104-2008.

ISO/IEC 17025:2017 PJLA/Testing Accreditation # 74648 Rev 07/07/2021 Page 1 of 1

Ph (509) 754-5725 Fax (509) 754-4239

Furanic Compounds Inhibitor and Metals Test Report

Company: Manufacturer: Report Date:

Address: Serial: Company ID:

City, State: Cooling Type: Unit #:

Substation: MVA: Invoice #:

Sampled by: kV: Syringe # Contact: Gallons: Bottle #

App Type: Lab Control #

8/8/2022 8/25/2020 12/5/2019 7/3/2019 9/25/2018 11/2/2017

(DBPC) (%) 0.084 0.092 0.102 0.118 0.086 0.091

Comments:

8/8/2022 8/25/2020 12/5/2019 7/3/2019 9/25/2018 11/2/2017 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 2 1 2 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0

Comments:

11/2/2017

<10 <10 <10 <10 <10

>1003

Collection Date:

Silver (Ag) Aluminum (Al) Copper (Cu)

5-hydroxymethyl-2-furaldehyde (5H2F):

Furanic Compound

Zinc (Zn) No apparent Issues with wear metals at sampling.

1. This test is conducted by a subcontracted laboratory.

Collection Date:

Iron (Fe) Lead (Pb) Silicon (Si) Tin (Sn)

9/2/2022

KN8A-A

NP

37E90487

USBR Lower Colorado Region 500 Fir Street Boulder City, NV 89005 Hoover

Smit 219802

ASTM D-2668 Oxidation Inhibitor1,2

Collection Date:

2,6-ditertiary-butyl paracresol

1. This test is conducted by a subcontracted laboratory. 2. Subcontracted laboratory has received ISO Standard 17025 accreditation for this test.

ASTM D-6595 Metals in Oil Analysis1

Exceeds limit for in-service oil Type I (0.0% min and 0.08% max). Acceptable for in-service oil Type II (0.08% min and 0.3% max).

Diagnostics: Reporting Limit 10ppb. New insulation with a high degree of mechanical strength will typically have a Degree of Polmerization (DP) of 1000-1300. “Middle Aged” paper is approximately 500 and paper with less than 250 is in its “Old Age”. Severely degraded insulation with a DP of 150 or less will have very little mechanical strength and may result in a transformer failure. Estimates are based on transformers filled with mineral oil. Estimated DP based upon Chendong model study.

Estimated DP:

FOW

ASTM D-5837 Furans in Oil Analysis

N. Vue / J. Ongley 230 37E11682 37E11682

TRN

Brandon Sparks 7200

37E11682-08122022

Reporting Limit = 10 ppb furfuryl alcohol (FF):

2-furaldehyde (2FAL):

Ph (509) 754-5725 Fax (509) 754-4239

Mineral Standard Test Report

Company: Manufacturer: Report Date:

Address: Serial: Company ID:

City, State: Cooling Type: Unit #:

Substation: MVA: Invoice #:

Sampled by: kV: Syringe # Contact: Gallons: Bottle #

PCB: App Type: Lab Control #

8/8/2022 8/25/2020 12/5/2019 7/3/2019 9/25/2018 11/2/2017 (ppm) <10 <10 <10 <10 <10 <10 (ppm) 113 105 65 71 57 69 (ppm) 40 58 23 29 24 21 (ppm) 6 7 5 6 8 6 (ppm) <1 <1 <1 <1 <1 <1 (ppm) 429 264 350 408 291 343 (ppm) 1867 1612 1788 3119 1382 1251 (ppm) 55532 34864 37376 46029 29153 34072 (ppm) 9736 2495 2915 4088 2500 1322 (ppm) 588 435 443 514 380 439 (ppm) 67723 39405 42523 53750 33416 37083

Comments:

8/8/2022 8/25/2020 12/5/2019 7/3/2019 9/25/2018 11/2/2017 Oil Temp: (°C) 46 23 40 40 30 33

D-1533 Moisture (ppm) 14.2 1.1 4.0 4.0 1.7 4.0 D-971 Interfacial Tension (dynes/cm) 38.3 39.5 35.4 39.8 30.6 30.2 D-974 Acid Neutralization (mg KOH/g) 0.02 0.02 0.02 0.02 0.01 0.02 D-1500 Color < 2.0 < 2.5 < 2.5 < 2.5 < 2.0 < 2.0 D-1524 Visual Pass Pass Pass Pass Pass Pass D-877 Dielectric (kV) 53.7 53.2 53.6 59.0 54.7 D-1816 Dielectric (kV 1mm-C) D-1816 Dielectric (kV 2mm-C) 33.3 70.4 64.1 55.5 48.6 50.4 D-1298 Specific Gravity 0.8830 0.8810 0.8840 0.8850 0.8840 0.8830 D-924 Pwr Factor (25°C) (%) 0.058 0.030 0.035 0.058 0.044 0.043 D-924 Pwr Factor (100°C) (%) 1.455 0.845 1.512 1.960 0.955 1.054 D-1698 Sediment (%) <0.001 D-1275B Corrosive Sulfur N-2a EPA 8082 PCB by Method 8082 (ppm) <1

Relative Saturation (%) 9.4% 1.8% 3.3% 3.3% 2.1% 4.3%

Comments: Fails IEEE Std. C57.106-2015 acceptable levels.

37E11683 37E11683

TRN

Combustible gas levels indicate cellulose insulation aging. Recommend retest in 1 year.

Total Combustible Gas:

Total Gas in Oil:

Collection Date:

Oxygen (O2): (ppm)

Brandon Sparks <1 ppm

Ethylene (C2H4): (ppm)

ASTM D3612C Dissolved Gas Analysis (Expressed in ppm’s)

Our test results relate only to the sample tested. The analyses, opinions, or interpretations contained in this report are based upon material and information supplied by the client. Any interpretations or opinions expressed represent the best judgment of JACO Analytical Laboratory, Inc. JACO Analytical Laboratory, Inc. assumes no responsibility and makes no warranty or representation, expressed or implied as to the condition, productivity, or proper operation of any equipment or other property by which this report may be used or relied upon for any reason whatsoever. JACO Analytical Laboratory, Inc. does not imply that the contents of the sample received by this laboratory are the same as all such material in the environment from which the sample was taken. This test report shall not be reproduced except in full, without written approval of the laboratory.

Dielectric is less than the recommended minimum of 50 kV.

PCB result by JACO Analytical Laboratory NY NELAC Cert. Lab # 11384

9/2/2022

KN8A-B

NP

37E90487

Nitrogen (N2): (ppm)

USBR Lower Colorado Region 500 Fir Street Boulder City, NV 89005 Hoover

Smit 219803

FOW

N. Vue / J. Ongley 230

37E11683-08122022

Oil Quality

Acetylene (C2H2): (ppm) Carbon Monoxide (CO): (ppm) Carbon Dioxide (CO2): (ppm)

Collection Date:

Hydrogen (H2): (ppm) Methane (CH4): (ppm) Ethane (C2H6): (ppm)

Meets condition 2 in IEEE Std. C57.104-2008.

ISO/IEC 17025:2017 PJLA/Testing Accreditation # 74648 Rev 07/07/2021 Page 1 of 1

Ph (509) 754-5725 Fax (509) 754-4239

Furanic Compounds Inhibitor and Metals Test Report

Company: Manufacturer: Report Date:

Address: Serial: Company ID:

City, State: Cooling Type: Unit #:

Substation: MVA: Invoice #:

Sampled by: kV: Syringe # Contact: Gallons: Bottle #

App Type: Lab Control #

8/8/2022 8/25/2020 12/5/2019 7/3/2019 9/25/2018 11/2/2017

(DBPC) (%) 0.086 0.082 0.101 0.114 0.082 0.094

Comments:

8/8/2022 8/25/2020 12/5/2019 7/3/2019 9/25/2018 11/2/2017 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 1 0 0 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0 (ppm) 1 0 0 0 1 2 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0

Comments:

11/2/2017

<10 <10 <10 <10 <10

>1003

Collection Date:

Silver (Ag) Aluminum (Al) Copper (Cu)

5-hydroxymethyl-2-furaldehyde (5H2F):

Furanic Compound

Zinc (Zn) No apparent Issues with wear metals at sampling.

1. This test is conducted by a subcontracted laboratory.

Collection Date:

Iron (Fe) Lead (Pb) Silicon (Si) Tin (Sn)

9/2/2022

KN8A-B

NP

37E90487

USBR Lower Colorado Region 500 Fir Street Boulder City, NV 89005 Hoover

Smit 219803

ASTM D-2668 Oxidation Inhibitor1,2

Collection Date:

2,6-ditertiary-butyl paracresol

1. This test is conducted by a subcontracted laboratory. 2. Subcontracted laboratory has received ISO Standard 17025 accreditation for this test.

ASTM D-6595 Metals in Oil Analysis1

Exceeds limit for in-service oil Type I (0.0% min and 0.08% max). Acceptable for in-service oil Type II (0.08% min and 0.3% max).

Diagnostics: Reporting Limit 10ppb. New insulation with a high degree of mechanical strength will typically have a Degree of Polmerization (DP) of 1000-1300. “Middle Aged” paper is approximately 500 and paper with less than 250 is in its “Old Age”. Severely degraded insulation with a DP of 150 or less will have very little mechanical strength and may result in a transformer failure. Estimates are based on transformers filled with mineral oil. Estimated DP based upon Chendong model study.

Estimated DP:

FOW

ASTM D-5837 Furans in Oil Analysis

N. Vue / J. Ongley 230 37E11683 37E11683

TRN

Brandon Sparks 7200

37E11683-08122022

Reporting Limit = 10 ppb furfuryl alcohol (FF):

2-furaldehyde (2FAL):

Ph (509) 754-5725 Fax (509) 754-4239

Mineral Standard Test Report

Company: Manufacturer: Report Date:

Address: Serial: Company ID:

City, State: Cooling Type: Unit #:

Substation: MVA: Invoice #:

Sampled by: kV: Syringe # Contact: Gallons: Bottle #

PCB: App Type: Lab Control #

8/8/2022 8/25/2020 12/5/2019 7/3/2019 9/25/2018 11/2/2017 (ppm) <10 <10 <10 <10 <10 <10 (ppm) 79 59 50 62 39 49 (ppm) 21 20 14 18 15 14 (ppm) 6 8 4 5 6 4 (ppm) <1 <1 <1 <1 <1 <1 (ppm) 403 337 318 385 222 266 (ppm) 1237 1333 1277 2326 938 855 (ppm) 60224 35992 31894 44703 24337 26679 (ppm) 13771 2615 2436 5018 2800 1278 (ppm) 509 424 386 470 281 333 (ppm) 75741 40364 35993 52516 28356 29145

Comments:

8/8/2022 8/25/2020 12/5/2019 7/3/2019 9/25/2018 11/2/2017 Oil Temp: (°C) 35 24 28 32 30 35

D-1533 Moisture (ppm) 14.2 1.7 4.5 5.7 1.7 3.4 D-971 Interfacial Tension (dynes/cm) 37.8 43.6 35.5 43.9 39.8 34.0 D-974 Acid Neutralization (mg KOH/g) 0.01 0.02 0.02 0.01 0.02 0.02 D-1500 Color < 2.0 < 2.5 < 2.0 < 2.0 < 2.0 < 2.0 D-1524 Visual Pass Pass Pass Pass Pass Pass D-877 Dielectric (kV) 58.9 50.4 60.6 55.0 47.7 D-1816 Dielectric (kV 1mm-C) D-1816 Dielectric (kV 2mm-C) 69.9 66.4 67.4 58.6 68.9 53.4 D-1298 Specific Gravity 0.8830 0.8810 0.8840 0.8840 0.8840 0.8840 D-924 Pwr Factor (25°C) (%) 0.027 0.021 0.023 0.031 0.063 0.031 D-924 Pwr Factor (100°C) (%) 0.936 0.773 0.936 0.960 1.362 0.680 D-1698 Sediment (%) <0.001 D-1275B Corrosive Sulfur N-1b EPA 8082 PCB by Method 8082 (ppm) <1

Relative Saturation (%) 14.1% 2.6% 5.9% 6.4% 2.1% 3.4%

Comments: Meets IEEE Std. C57.106-2015 acceptable levels.

37E11684 37E11684

TRN

Combustible gas levels indicate cellulose insulation aging. Recommend retest in 1 year.

Total Combustible Gas:

Total Gas in Oil:

Collection Date:

Oxygen (O2): (ppm)

Brandon Sparks <1 ppm

Ethylene (C2H4): (ppm)

ASTM D3612C Dissolved Gas Analysis (Expressed in ppm’s)

Our test results relate only to the sample tested. The analyses, opinions, or interpretations contained in this report are based upon material and information supplied by the client. Any interpretations or opinions expressed represent the best judgment of JACO Analytical Laboratory, Inc. JACO Analytical Laboratory, Inc. assumes no responsibility and makes no warranty or representation, expressed or implied as to the condition, productivity, or proper operation of any equipment or other property by which this report may be used or relied upon for any reason whatsoever. JACO Analytical Laboratory, Inc. does not imply that the contents of the sample received by this laboratory are the same as all such material in the environment from which the sample was taken. This test report shall not be reproduced except in full, without written approval of the laboratory.

PCB result by JACO Analytical Laboratory NY NELAC Cert. Lab # 11384

9/2/2022

KN8A-C

NP

37E90487

Nitrogen (N2): (ppm)

USBR Lower Colorado Region 500 Fir Street Boulder City, NV 89005 Hoover

Smit 219804

FOW

N. Vue / J. Ongley 230

37E11684-08122022

Oil Quality

Acetylene (C2H2): (ppm) Carbon Monoxide (CO): (ppm) Carbon Dioxide (CO2): (ppm)

Collection Date:

Hydrogen (H2): (ppm) Methane (CH4): (ppm) Ethane (C2H6): (ppm)

Meets condition 2 in IEEE Std. C57.104-2008.

ISO/IEC 17025:2017 PJLA/Testing Accreditation # 74648 Rev 07/07/2021 Page 1 of 1

Ph (509) 754-5725 Fax (509) 754-4239

Furanic Compounds Inhibitor and Metals Test Report

Company: Manufacturer: Report Date:

Address: Serial: Company ID:

City, State: Cooling Type: Unit #:

Substation: MVA: Invoice #:

Sampled by: kV: Syringe # Contact: Gallons: Bottle #

App Type: Lab Control #

8/8/2022 8/25/2020 12/5/2019 7/3/2019 9/25/2018 11/2/2017

(DBPC) (%) 0.082 0.09 0.102 0.113 0.08 0.092

Comments:

8/8/2022 8/25/2020 12/5/2019 7/3/2019 9/25/2018 11/2/2017 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 1 0 0 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 2 2 1 (ppm) 0 0 0 0 0 0 (ppm) 1 0 0 0 0 0 (ppm) 0 0 0 0 0 0

Comments:

11/2/2017

<10 <10 <10 <10 <10

>1003

Collection Date:

Silver (Ag) Aluminum (Al) Copper (Cu)

5-hydroxymethyl-2-furaldehyde (5H2F):

Furanic Compound

Zinc (Zn) No apparent Issues with wear metals at sampling.

1. This test is conducted by a subcontracted laboratory.

Collection Date:

Iron (Fe) Lead (Pb) Silicon (Si) Tin (Sn)

9/2/2022

KN8A-C

NP

37E90487

USBR Lower Colorado Region 500 Fir Street Boulder City, NV 89005 Hoover

Smit 219804

ASTM D-2668 Oxidation Inhibitor1,2

Collection Date:

2,6-ditertiary-butyl paracresol

1. This test is conducted by a subcontracted laboratory. 2. Subcontracted laboratory has received ISO Standard 17025 accreditation for this test.

ASTM D-6595 Metals in Oil Analysis1

Exceeds limit for in-service oil Type I (0.0% min and 0.08% max). Acceptable for in-service oil Type II (0.08% min and 0.3% max).

Diagnostics: Reporting Limit 10ppb. New insulation with a high degree of mechanical strength will typically have a Degree of Polmerization (DP) of 1000-1300. “Middle Aged” paper is approximately 500 and paper with less than 250 is in its “Old Age”. Severely degraded insulation with a DP of 150 or less will have very little mechanical strength and may result in a transformer failure. Estimates are based on transformers filled with mineral oil. Estimated DP based upon Chendong model study.

Estimated DP:

FOW

ASTM D-5837 Furans in Oil Analysis

N. Vue / J. Ongley 230 37E11684 37E11684

TRN

Brandon Sparks 7200

37E11684-08122022

Reporting Limit = 10 ppb furfuryl alcohol (FF):

2-furaldehyde (2FAL):

Ph (509) 754-5725 Fax (509) 754-4239

Mineral Standard Test Report

Company: Manufacturer: Report Date:

Address: Serial: Company ID:

City, State: Cooling Type: Unit #:

Substation: MVA: Invoice #:

Sampled by: kV: Syringe # Contact: Gallons: Bottle #

PCB: App Type: Lab Control #

8/4/2022 8/26/2020 12/6/2019 7/1/2019 9/24/2018 11/2/2017 (ppm) <10 <10 <10 <10 <10 <10 (ppm) 24 20 16 <1 14 19 (ppm) 5 5 4 5 4 5 (ppm) 35 35 27 27 28 33 (ppm) <1 <1 <1 <1 <1 <1 (ppm) 599 538 451 481 390 460 (ppm) 2024 2269 1742 2647 1312 1255 (ppm) 78902 53926 45414 46472 38456 46820 (ppm) 14680 3783 3765 2816 4109 2608 (ppm) 664 599 498 513 436 517 (ppm) 96269 60577 51418 52450 44313 51200

Comments:

8/4/2022 8/26/2020 12/6/2019 7/1/2019 9/24/2018 11/2/2017 Oil Temp: (°C) 22 22 17 22 35 21

D-1533 Moisture (ppm) 7.9 4.0 6.8 4.0 6.8 4.0 D-971 Interfacial Tension (dynes/cm) 37.6 36.5 36.3 40.7 35.2 35.3 D-974 Acid Neutralization (mg KOH/g) 0.01 0.02 0.01 0.01 0.01 0.02 D-1500 Color < 2.0 < 2.5 < 2.0 < 2.0 < 2.0 < 2.0 D-1524 Visual Pass Pass Pass Pass Pass Pass D-877 Dielectric (kV) 52.7 50.5 55.5 57.7 55.1 D-1816 Dielectric (kV 1mm-C) D-1816 Dielectric (kV 2mm-C) 40.3 71.6 60.4 65.4 53.0 60.9 D-1298 Specific Gravity 0.8700 0.8700 0.8730 0.8690 0.8700 0.8710 D-924 Pwr Factor (25°C) (%) 0.049 0.044 0.070 0.063 0.055 0.053 D-924 Pwr Factor (100°C) (%) 1.700 1.632 1.673 1.583 2.064 1.964 D-1698 Sediment (%) <0.001 D-1275B Corrosive Sulfur N-1a EPA 8082 PCB by Method 8082 (ppm) <1

Relative Saturation (%) 13.2% 6.7% 14.0% 6.7% 6.8% 7.0%

Comments:

37E11676-08122022

Oil Quality

Acetylene (C2H2): (ppm) Carbon Monoxide (CO): (ppm) Carbon Dioxide (CO2): (ppm)

Collection Date:

Hydrogen (H2): (ppm) Methane (CH4): (ppm) Ethane (C2H6): (ppm)

Meets condition 3 in IEEE Std. C57.104-2008.

9/2/2022

KA7A

NP

37E90487

Nitrogen (N2): (ppm)

11710

USBR Lower Colorado Region 500 Fir Street Boulder City, NV 89005 Hoover

ASEA

6311-784

FOW

N. Vue / J. Ongley 230

Our test results relate only to the sample tested. The analyses, opinions, or interpretations contained in this report are based upon material and information supplied by the client. Any interpretations or opinions expressed represent the best judgment of JACO Analytical Laboratory, Inc. JACO Analytical Laboratory, Inc. assumes no responsibility and makes no warranty or representation, expressed or implied as to the condition, productivity, or proper operation of any equipment or other property by which this report may be used or relied upon for any reason whatsoever. JACO Analytical Laboratory, Inc. does not imply that the contents of the sample received by this laboratory are the same as all such material in the environment from which the sample was taken. This test report shall not be reproduced except in full, without written approval of the laboratory.

Dielectric is less than the recommended minimum of 50 kV.

PCB result by JACO Analytical Laboratory NY NELAC Cert. Lab # 11384

Fails IEEE Std. C57.106-2015 acceptable levels.

37E11676 37E11676

TRN

Combustible gas levels indicate cellulose insulation aging. Recommend retest in 1 year.

Total Combustible Gas:

Total Gas in Oil:

Collection Date:

Oxygen (O2): (ppm)

Brandon Sparks <1 ppm

Ethylene (C2H4): (ppm)

ASTM D3612C Dissolved Gas Analysis (Expressed in ppm’s)

ISO/IEC 17025:2017 PJLA/Testing Accreditation # 74648 Rev 07/07/2021 Page 1 of 1

Ph (509) 754-5725 Fax (509) 754-4239

Furanic Compounds Inhibitor and Metals Test Report

Company: Manufacturer: Report Date:

Address: Serial: Company ID:

City, State: Cooling Type: Unit #:

Substation: MVA: Invoice #:

Sampled by: kV: Syringe # Contact: Gallons: Bottle #

App Type: Lab Control #

8/4/2022 8/26/2020 12/6/2020 7/1/2019 9/24/2018 11/2/2017

(DBPC) (%) 0.153 0.155 0.177 0.18 0.155 0.167

Comments:

8/4/2022 8/26/2020 12/6/2020 7/1/2019 9/24/2018 11/2/2017 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0 (ppm) 1 1 1 1 1 1 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0

Comments:

11/2/2017

<10 <10 <10 <10 <10

>1003

Collection Date:

Silver (Ag) Aluminum (Al) Copper (Cu)

5-hydroxymethyl-2-furaldehyde (5H2F):

Furanic Compound

Zinc (Zn) No apparent Issues with wear metals at sampling.

1. This test is conducted by a subcontracted laboratory.

Collection Date:

Iron (Fe) Lead (Pb) Silicon (Si) Tin (Sn)

9/2/2022

KA7A

NP

37E90487

USBR Lower Colorado Region 500 Fir Street Boulder City, NV 89005 Hoover

ASEA

6311-784

ASTM D-2668 Oxidation Inhibitor1,2

Collection Date:

2,6-ditertiary-butyl paracresol

1. This test is conducted by a subcontracted laboratory. 2. Subcontracted laboratory has received ISO Standard 17025 accreditation for this test.

ASTM D-6595 Metals in Oil Analysis1

Exceeds limit for in-service oil Type I (0.0% min and 0.08% max). Acceptable for in-service oil Type II (0.08% min and 0.3% max).

Diagnostics: Reporting Limit 10ppb. New insulation with a high degree of mechanical strength will typically have a Degree of Polmerization (DP) of 1000-1300. “Middle Aged” paper is approximately 500 and paper with less than 250 is in its “Old Age”. Severely degraded insulation with a DP of 150 or less will have very little mechanical strength and may result in a transformer failure. Estimates are based on transformers filled with mineral oil. Estimated DP based upon Chendong model study.

Estimated DP:

FOW

ASTM D-5837 Furans in Oil Analysis

N. Vue / J. Ongley 230 37E11676 37E11676

TRN

Brandon Sparks 11710

37E11676-08122022

Reporting Limit = 10 ppb furfuryl alcohol (FF):

2-furaldehyde (2FAL):

Ph (509) 754-5725 Fax (509) 754-4239

Mineral Standard Test Report

Company: Manufacturer: Report Date:

Address: Serial: Company ID:

City, State: Cooling Type: Unit #:

Substation: MVA: Invoice #:

Sampled by: kV: Syringe # Contact: Gallons: Bottle #

PCB: App Type: Lab Control #

8/4/2022 8/26/2020 12/6/2019 7/1/2019 9/24/2018 11/2/2017 (ppm) <10 <10 <10 <10 <10 <10 (ppm) 46 35 31 18 29 31 (ppm) 10 10 7 8 8 7 (ppm) 11 13 8 8 11 9 (ppm) <1 <1 <1 <1 <1 <1 (ppm) 524 448 431 394 362 344 (ppm) 1195 1238 1199 1356 957 818 (ppm) 63617 47853 46857 41833 33584 38823 (ppm) 9639 2914 3165 2580 2116 983 (ppm) 590 506 477 428 410 391 (ppm) 75041 52512 52298 46196 37066 41015

Comments:

8/4/2022 8/26/2020 12/6/2019 7/1/2019 9/24/2018 11/2/2017 Oil Temp: (°C) NP 21 18 24 35 21

D-1533 Moisture (ppm) 6.9 2.8 2.8 1.7 2.3 2.8 D-971 Interfacial Tension (dynes/cm) 36.0 38.8 35.9 40.6 31.3 37.6 D-974 Acid Neutralization (mg KOH/g) 0.01 0.02 0.02 0.01 0.01 0.02 D-1500 Color < 2.0 < 2.5 < 2.0 < 2.5 < 2.0 < 2.0 D-1524 Visual Pass Pass Pass Pass Pass Pass D-877 Dielectric (kV) 53.1 40.8 50.9 55.1 57.4 D-1816 Dielectric (kV 1mm-C) D-1816 Dielectric (kV 2mm-C) 34.6 68.7 68.9 35.6 57.3 64.7 D-1298 Specific Gravity 0.8840 0.8840 0.8860 0.8870 0.8850 0.8850 D-924 Pwr Factor (25°C) (%) 0.055 0.058 0.062 0.062 0.099 0.058 D-924 Pwr Factor (100°C) (%) 1.892 2.012 2.310 2.107 3.388 1.652 D-1698 Sediment (%) <0.001 D-1275B Corrosive Sulfur N-1a EPA 8082 PCB by Method 8082 (ppm) <1

Relative Saturation (%) NA 4.9% 5.5% 2.6% 2.3% 4.9%

Comments: Fails IEEE Std. C57.106-2015 acceptable levels.

37E11677 37E11677

TRN

Combustible gas levels indicate cellulose insulation aging. Recommend retest in 1 year.

Total Combustible Gas:

Total Gas in Oil:

Collection Date:

Oxygen (O2): (ppm)

Brandon Sparks <1 ppm

Ethylene (C2H4): (ppm)

ASTM D3612C Dissolved Gas Analysis (Expressed in ppm’s)

Our test results relate only to the sample tested. The analyses, opinions, or interpretations contained in this report are based upon material and information supplied by the client. Any interpretations or opinions expressed represent the best judgment of JACO Analytical Laboratory, Inc. JACO Analytical Laboratory, Inc. assumes no responsibility and makes no warranty or representation, expressed or implied as to the condition, productivity, or proper operation of any equipment or other property by which this report may be used or relied upon for any reason whatsoever. JACO Analytical Laboratory, Inc. does not imply that the contents of the sample received by this laboratory are the same as all such material in the environment from which the sample was taken. This test report shall not be reproduced except in full, without written approval of the laboratory.

Dielectric is less than the recommended minimum of 50 kV.

PCB result by JACO Analytical Laboratory NY NELAC Cert. Lab # 11384

9/2/2022

KA8A

NP

37E90487

Nitrogen (N2): (ppm)

11710

USBR Lower Colorado Region 500 Fir Street Boulder City, NV 89005 Hoover

ASEA

6311-785

FOW

N. Vue / J. Ongley 230

37E11677-08122022

Oil Quality

Acetylene (C2H2): (ppm) Carbon Monoxide (CO): (ppm) Carbon Dioxide (CO2): (ppm)

Collection Date:

Hydrogen (H2): (ppm) Methane (CH4): (ppm) Ethane (C2H6): (ppm)

Meets condition 2 in IEEE Std. C57.104-2008.

ISO/IEC 17025:2017 PJLA/Testing Accreditation # 74648 Rev 07/07/2021 Page 1 of 1

Ph (509) 754-5725 Fax (509) 754-4239

Furanic Compounds Inhibitor and Metals Test Report

Company: Manufacturer: Report Date:

Address: Serial: Company ID:

City, State: Cooling Type: Unit #:

Substation: MVA: Invoice #:

Sampled by: kV: Syringe # Contact: Gallons: Bottle #

App Type: Lab Control #

8/4/2022 8/26/2020 12/6/2019 7/1/2019 9/24/2018 11/2/2017

(DBPC) (%) 0.158 0.171 0.189 0.184 0.169 0.178

Comments:

8/4/2022 8/26/2020 12/6/2019 7/1/2019 9/24/2018 11/2/2017 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0 (ppm) 1 1 1 1 1 1 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0

Comments:

11/2/2017

<10 <10 <10 <10 <10

>1003

Collection Date:

Silver (Ag) Aluminum (Al) Copper (Cu)

5-hydroxymethyl-2-furaldehyde (5H2F):

Furanic Compound

Zinc (Zn) No apparent Issues with wear metals at sampling.

1. This test is conducted by a subcontracted laboratory.

Collection Date:

Iron (Fe) Lead (Pb) Silicon (Si) Tin (Sn)

9/2/2022

KA8A

NP

37E90487

USBR Lower Colorado Region 500 Fir Street Boulder City, NV 89005 Hoover

ASEA

6311-785

ASTM D-2668 Oxidation Inhibitor1,2

Collection Date:

2,6-ditertiary-butyl paracresol

1. This test is conducted by a subcontracted laboratory. 2. Subcontracted laboratory has received ISO Standard 17025 accreditation for this test.

ASTM D-6595 Metals in Oil Analysis1

Exceeds limit for in-service oil Type I (0.0% min and 0.08% max). Acceptable for in-service oil Type II (0.08% min and 0.3% max).

Diagnostics: Reporting Limit 10ppb. New insulation with a high degree of mechanical strength will typically have a Degree of Polmerization (DP) of 1000-1300. “Middle Aged” paper is approximately 500 and paper with less than 250 is in its “Old Age”. Severely degraded insulation with a DP of 150 or less will have very little mechanical strength and may result in a transformer failure. Estimates are based on transformers filled with mineral oil. Estimated DP based upon Chendong model study.

Estimated DP:

FOW

ASTM D-5837 Furans in Oil Analysis

N. Vue / J. Ongley 230 37E11677 37E11677

TRN

Brandon Sparks 11710

37E11677-08122022

Reporting Limit = 10 ppb furfuryl alcohol (FF):

2-furaldehyde (2FAL):

Ph (509) 754-5725 Fax (509) 754-4239

Mineral Standard Test Report

Company: Manufacturer: Report Date:

Address: Serial: Company ID:

City, State: Cooling Type: Unit #:

Substation: MVA: Invoice #:

Sampled by: kV: Syringe # Contact: Gallons: Bottle #

PCB: App Type: Lab Control #

8/4/2022 8/26/2020 12/6/2019 7/1/2019 9/24/2018 11/2/2017 (ppm) <10 <10 <10 <10 <10 <10 (ppm) 15 9 7 <1 7 33 (ppm) 3 3 2 2 2 6 (ppm) 6 7 4 4 4 7 (ppm) <1 <1 <1 <1 <1 <1 (ppm) 249 183 176 138 114 375 (ppm) 822 809 785 807 514 843 (ppm) 39926 27533 25152 20425 20471 36231 (ppm) 8422 2998 2868 2107 3671 1646 (ppm) 273 201 190 144 126 421 (ppm) 49443 31542 28994 23482 24781 39142

Comments:

8/4/2022 8/26/2020 12/6/2019 7/1/2019 9/24/2018 11/2/2017 Oil Temp: (°C) 27 29 21 26 42 24

D-1533 Moisture (ppm) 8.8 1.1 6.8 2.8 3.4 2.8 D-971 Interfacial Tension (dynes/cm) 37.8 39.8 37.4 45.7 33.4 33.7 D-974 Acid Neutralization (mg KOH/g) 0.01 0.01 0.02 0.02 0.01 0.01 D-1500 Color < 2.0 < 2.5 < 2.0 < 2.0 < 2.0 < 2.0 D-1524 Visual Pass Pass Pass Pass Pass Pass D-877 Dielectric (kV) 52.4 54.9 52.9 50.6 55.1 D-1816 Dielectric (kV 1mm-C) D-1816 Dielectric (kV 2mm-C) 37.3 67.4 63.0 50.3 53.7 66.5 D-1298 Specific Gravity 0.8830 0.8840 0.8840 0.8830 0.8840 0.8850 D-924 Pwr Factor (25°C) (%) 0.098 0.054 0.077 0.058 0.074 0.058 D-924 Pwr Factor (100°C) (%) 3.072 1.828 2.752 2.131 2.185 1.247 D-1698 Sediment (%) <0.001 D-1275B Corrosive Sulfur N-1a EPA 8082 PCB by Method 8082 (ppm) <1

Relative Saturation (%) 12.0% 1.4% 11.8% 4.0% 2.6% 4.3%

Comments:

37E11673-08122022

Oil Quality

Acetylene (C2H2): (ppm) Carbon Monoxide (CO): (ppm) Carbon Dioxide (CO2): (ppm)

Collection Date:

Hydrogen (H2): (ppm) Methane (CH4): (ppm) Ethane (C2H6): (ppm)

Meets condition 1 in IEEE Std. C57.104-2008.

9/2/2022

KA3A

NP

37E90487

Nitrogen (N2): (ppm)

11710

USBR Lower Colorado Region 500 Fir Street Boulder City, NV 89005 Hoover

ASEA

6311-786

FOW

N. Vue / J. Ongley 230

Our test results relate only to the sample tested. The analyses, opinions, or interpretations contained in this report are based upon material and information supplied by the client. Any interpretations or opinions expressed represent the best judgment of JACO Analytical Laboratory, Inc. JACO Analytical Laboratory, Inc. assumes no responsibility and makes no warranty or representation, expressed or implied as to the condition, productivity, or proper operation of any equipment or other property by which this report may be used or relied upon for any reason whatsoever. JACO Analytical Laboratory, Inc. does not imply that the contents of the sample received by this laboratory are the same as all such material in the environment from which the sample was taken. This test report shall not be reproduced except in full, without written approval of the laboratory.

Dielectric is less than the recommended minimum of 50 kV.

PCB result by JACO Analytical Laboratory NY NELAC Cert. Lab # 11384

Fails IEEE Std. C57.106-2015 acceptable levels.

37E11673 37E11673

TRN

Recommend retest in I year.

Total Combustible Gas:

Total Gas in Oil:

Collection Date:

Oxygen (O2): (ppm)

Brandon Sparks <1 ppm

Ethylene (C2H4): (ppm)

ASTM D3612C Dissolved Gas Analysis (Expressed in ppm’s)

ISO/IEC 17025:2017 PJLA/Testing Accreditation # 74648 Rev 07/07/2021 Page 1 of 1

Ph (509) 754-5725 Fax (509) 754-4239

Furanic Compounds Inhibitor and Metals Test Report

Company: Manufacturer: Report Date:

Address: Serial: Company ID:

City, State: Cooling Type: Unit #:

Substation: MVA: Invoice #:

Sampled by: kV: Syringe # Contact: Gallons: Bottle #

App Type: Lab Control #

8/4/2022 8/26/2020 12/6/2019 7/1/2019 9/24/2018 11/2/2017

(DBPC) (%) 0.155 0.17 0.184 0.181 0.175 0.173

Comments:

8/4/2022 8/26/2020 12/6/2019 7/1/2019 9/24/2018 11/2/2017 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0 (ppm) 1 1 1 1 1 1 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 1 1 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0 (ppm) 0 0 0 0 0 0

Comments:

11/2/2017

<10 <10 <10 <10 <10

>1003

Reporting Limit = 10 ppb furfuryl alcohol (FF):

2-furaldehyde (2FAL):

2-acetylfuran (2AF):

5-methyl-2-furaldehyde (5M2F):

Diagnostics: Reporting Limit 10ppb. New insulation with a high degree of mechanical strength will typically have a Degree of Polmerization (DP) of 1000-1300. “Middle Aged” paper is approximately 500 and paper with less than 250 is in its “Old Age”. Severely degraded insulation with a DP of 150 or less will have very little mechanical strength and may result in a transformer failure. Estimates are based on transformers filled with mineral oil. Estimated DP based upon Chendong model study.

Estimated DP:

FOW

ASTM D-5837 Furans in Oil Analysis

N. Vue / J. Ongley 230 37E11673 37E11673

TRN

Brandon Sparks 11710

37E11673-08122022

ASTM D-2668 Oxidation Inhibitor1,2

Collection Date:

2,6-ditertiary-butyl paracresol

1. This test is conducted by a subcontracted laboratory. 2. Subcontracted laboratory has received ISO Standard 17025 accreditation for this test.

ASTM D-6595 Metals in Oil Analysis1

Exceeds limit for in-service oil Type I (0.0% min and 0.08% max). Acceptable for in-service oil Type II (0.08% min and 0.3% max).

9/2/2022

KA3A

NP

37E90487

USBR Lower Colorado Region 500 Fir Street Boulder City, NV 89005 Hoover

ASEA

6311-786

Collection Date:

Silver (Ag) Aluminum (Al) Copper (Cu)

5-hydroxymethyl-2-furaldehyde (5H2F):

Furanic Compound

Zinc (Zn) No apparent Issues with wear metals at sampling.

1. This test is conducted by a subcontracted laboratory.

Collection Date:

Iron (Fe) Lead (Pb)

Ph (509) 754-5725 Fax (509) 754-4239

Mineral Standard Test Report

Company: Manufacturer: Report Date:

Address: Serial: Company ID:

City, State: Cooling Type: Unit #:

Substation: MVA: Invoice #:

Sampled by: kV: Syringe # Contact: Gallons: Bottle #

PCB: App Type: Lab Control #

8/4/2022 8/26/2020 12/6/2019 7/1/2019 9/24/2018 11/2/2017 (ppm) <10 <10 <10 <10 <10 <10 (ppm) 9 7 6 <1 6 8 (ppm) 2 <1 2 2 2 2 (ppm) 30 30 25 24 26 29 (ppm) <1 <1 <1 <1 <1 <1 (ppm) 900 790 730 651 635 755 (ppm) 1870 2055 1632 2231 1510 1415 (ppm) 75660 58196 55513 47799 38664 50636 (ppm) 17784 8778 8915 6799 4704 4353 (ppm) 942 827 763 677 669 795 (ppm) 96256 69857 66822 57506 45547 57199

Comments:

8/4/2022 8/26/2020 12/6/2019 7/1/2019 9/24/2018 11/2/2017 Oil Temp: (°C) 27 29 24 26 25 39

D-1533 Moisture (ppm) 6.0 2.3 8.5 4.0 5.7 4.5 D-971 Interfacial Tension (dynes/cm) 36.9 33.1 35.1 41.1 33.3 33.1 D-974 Acid Neutralization (mg KOH/g) 0.02 0.01 0.02 0.02 0.01 0.02 D-1500 Color < 1.5 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 D-1524 Visual Pass Pass Pass Pass Pass Pass D-877 Dielectric (kV) 54.1 57.7 52.7 52.4 56.4 D-1816 Dielectric (kV 1mm-C) D-1816 Dielectric (kV 2mm-C) 40.6 72.9 71.8 67.1 56.6 65.4 D-1298 Specific Gravity 0.8860 0.8860 0.8870 0.8870 0.8880 0.8860 D-924 Pwr Factor (25°C) (%) 0.055 0.030 0.051 0.044 0.047 0.030…