Cities Index.
1. Exhibit B - Signal Hill Housing Element Final EIR

Signal Hill City Council
July 12, 2022

Document
1. Exhibit B - Signal Hill Housing Element Final EIR
Meeting
July 12, 2022
Body
Signal Hill City Council
Pages
220
Original file
9.6 MB
Text extracted from the city's file for reading and search. Open the original on cityofsignalhill.legistar1.com. That file is the official record.

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Metals by EPA 6000/7000 Series Methods
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV15-10 (2107188-29) Soil Sampled: 07/13/21 13:23 Received: 07/13/21 17:07 Silver ND 2.0 mg/kg 1 B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 79 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 7.8 3.3 " " " " " "
Chromium 16 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G1418 07/14/21 07/19/21 16:44 EPA 7199A Copper 13 5.0 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Mercury ND 0.90 " " B1G1415 07/14/21 07/16/21 20:30 EPA 7471A Molybdenum ND 5.2 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Nickel 12 3.0 " " " " " "
Lead ND 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 26 5.1 " " " " " "
Zinc 38 7.0 " " " " " "
SV15-15 (2107188-30) Soil Sampled: 07/13/21 13:27 Received: 07/13/21 17:07 Silver ND 2.0 mg/kg 1 B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 64 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 4.9 3.3 " " " " " "
Chromium 11 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G1418 07/14/21 07/19/21 16:44 EPA 7199A Copper 6.9 5.0 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Mercury ND 0.90 " " B1G1415 07/14/21 07/16/21 20:30 EPA 7471A Molybdenum ND 5.2 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Nickel 7.7 3.0 " " " " " "
Lead ND 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 16 5.1 " " " " " "
Zinc 26 7.0 " " " " " "

Page 18 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Metals by EPA 6000/7000 Series Methods
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV16-5 (2107188-31) Soil Sampled: 07/13/21 13:54 Received: 07/13/21 17:07 Silver ND 2.0 mg/kg 1 B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 160 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 7.4 3.3 " " " " " "
Chromium 17 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G1418 07/14/21 07/19/21 16:44 EPA 7199A Copper 20 5.0 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Mercury ND 0.90 " " B1G1415 07/14/21 07/16/21 20:30 EPA 7471A Molybdenum ND 5.2 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Nickel 11 3.0 " " " " " "
Lead 19 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 24 5.1 " " " " " "
Zinc 63 7.0 " " " " " "
SV16-10 (2107188-32) Soil Sampled: 07/13/21 13:57 Received: 07/13/21 17:07 Silver ND 2.0 mg/kg 1 B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 130 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 11 3.3 " " " " " "
Chromium 24 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G1418 07/14/21 07/19/21 16:44 EPA 7199A Copper 27 5.0 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Mercury ND 0.90 " " B1G1415 07/14/21 07/16/21 20:30 EPA 7471A Molybdenum ND 5.2 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Nickel 16 3.0 " " " " " "
Lead 27 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 36 5.1 " " " " " "
Zinc 86 7.0 " " " " " "

Page 19 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Metals by EPA 6000/7000 Series Methods
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV16-15 (2107188-33) Soil Sampled: 07/13/21 14:00 Received: 07/13/21 17:07 Silver ND 2.0 mg/kg 1 B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 720 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 8.0 3.3 " " " " " "
Chromium 23 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G1418 07/14/21 07/19/21 16:44 EPA 7199A Copper 37 5.0 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Mercury ND 0.90 " " B1G1415 07/14/21 07/16/21 20:30 EPA 7471A Molybdenum ND 5.2 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Nickel 16 3.0 " " " " " "
Lead 61 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 28 5.1 " " " " " "
Zinc 90 7.0 " " " " " "
SV17-5 (2107188-34) Soil Sampled: 07/13/21 14:44 Received: 07/13/21 17:07 Silver ND 2.0 mg/kg 1 B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Arsenic 20 5.5 " " " " " "
Barium 88 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 6.7 3.3 " " " " " "
Chromium 18 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G1418 07/14/21 07/19/21 16:44 EPA 7199A Copper 47 5.0 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Mercury ND 0.90 " " B1G1415 07/14/21 07/16/21 20:30 EPA 7471A Molybdenum ND 5.2 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Nickel 17 3.0 " " " " " "
Lead 57 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 21 5.1 " " " " " "
Zinc 180 7.0 " " " " " "

Page 20 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Metals by EPA 6000/7000 Series Methods
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV17-10 (2107188-35) Soil Sampled: 07/13/21 14:48 Received: 07/13/21 17:07 Silver ND 2.0 mg/kg 1 B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 170 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 9.2 3.3 " " " " " "
Chromium 20 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G1418 07/14/21 07/19/21 16:44 EPA 7199A Copper 21 5.0 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Mercury ND 0.90 " " B1G1415 07/14/21 07/16/21 20:30 EPA 7471A Molybdenum ND 5.2 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Nickel 13 3.0 " " " " " "
Lead 12 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 28 5.1 " " " " " "
Zinc 61 7.0 " " " " " "
SV17-15 (2107188-36) Soil Sampled: 07/13/21 14:53 Received: 07/13/21 17:07 Silver ND 2.0 mg/kg 1 B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 240 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 16 3.3 " " " " " "
Chromium 35 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G1418 07/14/21 07/19/21 16:44 EPA 7199A Copper 35 5.0 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Mercury ND 0.90 " " B1G1415 07/14/21 07/16/21 20:30 EPA 7471A Molybdenum ND 5.2 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Nickel 19 3.0 " " " " " "
Lead 12 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium 7.4 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 47 5.1 " " " " " "
Zinc 120 7.0 " " " " " "

Page 21 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Metals by EPA 6000/7000 Series Methods
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV18-5 (2107188-37) Soil Sampled: 07/13/21 15:19 Received: 07/13/21 17:07 Silver ND 2.0 mg/kg 1 B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 110 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 8.2 3.3 " " " " " "
Chromium 18 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G1418 07/14/21 07/19/21 16:44 EPA 7199A Copper 16 5.0 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Mercury ND 0.90 " " B1G1415 07/14/21 07/16/21 20:30 EPA 7471A Molybdenum ND 5.2 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Nickel 12 3.0 " " " " " "
Lead 14 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 28 5.1 " " " " " "
Zinc 66 7.0 " " " " " "
SV18-10 (2107188-38) Soil Sampled: 07/13/21 15:25 Received: 07/13/21 17:07 Silver ND 2.0 mg/kg 1 B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 94 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 9.8 3.3 " " " " " "
Chromium 18 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G1418 07/14/21 07/19/21 16:44 EPA 7199A Copper 14 5.0 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Mercury ND 0.90 " " B1G1415 07/14/21 07/16/21 20:30 EPA 7471A Molybdenum ND 5.2 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Nickel 12 3.0 " " " " " "
Lead ND 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 32 5.1 " " " " " "
Zinc 40 7.0 " " " " " "

Page 22 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Metals by EPA 6000/7000 Series Methods
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV18-15 (2107188-39) Soil Sampled: 07/13/21 15:29 Received: 07/13/21 17:07 Silver ND 2.0 mg/kg 1 B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 100 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 7.7 3.3 " " " " " "
Chromium 25 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G1418 07/14/21 07/19/21 16:44 EPA 7199A Copper 16 5.0 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Mercury ND 0.90 " " B1G1415 07/14/21 07/16/21 20:30 EPA 7471A Molybdenum ND 5.2 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Nickel 16 3.0 " " " " " "
Lead ND 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 35 5.1 " " " " " "
Zinc 54 7.0 " " " " " "
SV19-5 (2107188-40) Soil Sampled: 07/13/21 15:49 Received: 07/13/21 17:07 Silver ND 2.0 mg/kg 1 B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 74 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 6.9 3.3 " " " " " "
Chromium 14 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G1418 07/14/21 07/19/21 16:44 EPA 7199A Copper 11 5.0 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Mercury ND 0.90 " " B1G1415 07/14/21 07/16/21 20:30 EPA 7471A Molybdenum ND 5.2 " " B1G1412 07/14/21 07/19/21 15:58 EPA 6010B Nickel 11 3.0 " " " " " "
Lead ND 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 24 5.1 " " " " " "
Zinc 33 7.0 " " " " " "

Page 23 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Metals by EPA 6000/7000 Series Methods
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV19-10 (2107188-41) Soil Sampled: 07/13/21 15:54 Received: 07/13/21 17:07 Silver ND 2.0 mg/kg 1 B1G1413 07/14/21 07/19/21 16:48 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 66 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 7.3 3.3 " " " " " "
Chromium 17 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G1419 07/14/21 07/19/21 17:00 EPA 7199A Copper 12 5.0 " " B1G1413 07/14/21 07/19/21 16:48 EPA 6010B Mercury ND 0.90 " " B1G1416 07/14/21 07/16/21 20:32 EPA 7471A Molybdenum ND 5.2 " " B1G1413 07/14/21 07/19/21 16:48 EPA 6010B Nickel 12 3.0 " " " " " "
Lead ND 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 23 5.1 " " " " " "
Zinc 35 7.0 " " " " " "
SV19-15 (2107188-42) Soil Sampled: 07/13/21 15:59 Received: 07/13/21 17:07 Silver ND 2.0 mg/kg 1 B1G1413 07/14/21 07/19/21 16:48 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 46 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 5.2 3.3 " " " " " "
Chromium 10 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G1419 07/14/21 07/19/21 17:00 EPA 7199A Copper 7.8 5.0 " " B1G1413 07/14/21 07/19/21 16:48 EPA 6010B Mercury ND 0.90 " " B1G1416 07/14/21 07/16/21 20:32 EPA 7471A Molybdenum ND 5.2 " " B1G1413 07/14/21 07/19/21 16:48 EPA 6010B Nickel 8.1 3.0 " " " " " "
Lead ND 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 15 5.1 " " " " " "
Zinc 28 7.0 " " " " " "

Page 24 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Total Petroleum Hydrocarbons Carbon Range Analysis by GC-FID Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV6-5 (2107188-01) Soil Sampled: 07/13/21 07:35 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 61.2 % 60-175 B1G1504 07/15/21 07/15/21 14:41 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 91.0 % 35-130 B1G1502 " 07/15/21 12:38 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.050
SV6-10 (2107188-02) Soil Sampled: 07/13/21 07:44 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 78.5 % 60-175 B1G1504 07/15/21 07/15/21 14:41 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 95.5 % 35-130 B1G1502 " 07/15/21 12:38 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.050
SV6-15 (2107188-03) Soil Sampled: 07/13/21 07:51 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 73.8 % 60-175 B1G1504 07/15/21 07/15/21 14:41 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 98.4 % 35-130 B1G1502 " 07/15/21 12:38 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.050
SV7-5 (2107188-04) Soil Sampled: 07/13/21 08:15 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 78.6 % 60-175 B1G1504 07/15/21 07/15/21 14:41 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 93.3 % 35-130 B1G1502 " 07/15/21 12:38 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.062

Page 25 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Total Petroleum Hydrocarbons Carbon Range Analysis by GC-FID Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV7-10 (2107188-05) Soil Sampled: 07/13/21 08:25 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 74.3 % 60-175 B1G1504 07/15/21 07/15/21 14:41 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 90.3 % 35-130 B1G1502 " 07/15/21 12:38 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.071
SV7-15 (2107188-06) Soil Sampled: 07/13/21 08:30 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 65.6 % 60-175 B1G1504 07/15/21 07/15/21 14:41 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 86.7 % 35-130 B1G1502 " 07/15/21 12:38 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.050
SV8-5 (2107188-07) Soil Sampled: 07/13/21 08:56 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 129 % 60-175 B1G1504 07/15/21 07/15/21 14:41 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " "
(C23-C40)
27 5.0 "
Surrogate: a,a,a-Trifluorotoluene 93.5 % 35-130 B1G1502 " 07/15/21 12:38 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.042
SV8-10 (2107188-08) Soil Sampled: 07/13/21 08:58 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 60.8 % 60-175 B1G1504 07/15/21 07/15/21 14:41 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 93.9 % 35-130 B1G1502 " 07/15/21 12:38 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.050

Page 26 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Total Petroleum Hydrocarbons Carbon Range Analysis by GC-FID Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV8-15 (2107188-09) Soil Sampled: 07/13/21 09:06 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 66.0 % 60-175 B1G1504 07/15/21 07/15/21 14:41 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 101 % 35-130 B1G1502 " 07/15/21 12:38 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.050
SV9-5 (2107188-10) Soil Sampled: 07/13/21 09:19 Received: 07/13/21 17:07 Surrogate: o-Terphenyl % 60-175 B1G1504 07/15/21 07/15/21 14:41 EPA 8015B S-03 Total Petroleum Hydrocarbons " " " " "
(C13-C22)
110 100 "
Total Petroleum Hydrocarbons " " " " "
(C23-C40)
550 100 "
Surrogate: a,a,a-Trifluorotoluene 83.3 % 35-130 B1G1502 " 07/15/21 12:38 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.067
SV9-10 (2107188-11) Soil Sampled: 07/13/21 09:22 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 100 % 60-175 B1G1504 07/15/21 07/15/21 14:41 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " "
(C23-C40)
50 5.0 "
Surrogate: a,a,a-Trifluorotoluene 94.4 % 35-130 B1G1502 " 07/15/21 12:38 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.043
SV9-15 (2107188-12) Soil Sampled: 07/13/21 09:24 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 90.6 % 60-175 B1G1504 07/15/21 07/15/21 14:41 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 95.3 % 35-130 B1G1502 " 07/15/21 12:38 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.050

Page 27 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Total Petroleum Hydrocarbons Carbon Range Analysis by GC-FID Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV10-5 (2107188-13) Soil Sampled: 07/13/21 09:32 Received: 07/13/21 17:07 Surrogate: o-Terphenyl % 60-175 B1G1504 07/15/21 07/15/21 14:41 EPA 8015B S-03 Total Petroleum Hydrocarbons " " " " "
(C13-C22)
510 100 "
Total Petroleum Hydrocarbons " " " " "
(C23-C40)
650 100 "
Surrogate: a,a,a-Trifluorotoluene 80.6 % 35-130 B1G1502 " 07/15/21 12:38 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.084
SV10-10 (2107188-14) Soil Sampled: 07/13/21 09:36 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 79.0 % 60-175 B1G1504 07/15/21 07/15/21 14:41 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " "
(C23-C40)
52 5.0 "
Surrogate: a,a,a-Trifluorotoluene 88.6 % 35-130 B1G1502 " 07/15/21 12:38 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.050
SV10-15 (2107188-15) Soil Sampled: 07/13/21 09:52 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 68.8 % 60-175 B1G1504 07/15/21 07/15/21 14:41 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 97.1 % 35-130 B1G1502 " 07/15/21 12:38 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.050
SV11-5 (2107188-16) Soil Sampled: 07/13/21 10:16 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 86.1 % 60-175 B1G1504 07/15/21 07/15/21 14:41 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " "
(C23-C40)
160 5.0 "
Surrogate: a,a,a-Trifluorotoluene 94.5 % 35-130 B1G1502 " 07/15/21 12:38 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.050

Page 28 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Total Petroleum Hydrocarbons Carbon Range Analysis by GC-FID Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV11-10 (2107188-17) Soil Sampled: 07/13/21 10:20 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 120 % 60-175 B1G1504 07/15/21 07/15/21 14:41 EPA 8015B Total Petroleum Hydrocarbons " " " " "
(C13-C22)
39 5.0 "
Total Petroleum Hydrocarbons " " " " "
(C23-C40)
200 5.0 "
Surrogate: a,a,a-Trifluorotoluene 91.6 % 35-130 B1G1502 " 07/15/21 12:38 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.050
SV11-15 (2107188-18) Soil Sampled: 07/13/21 10:26 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 72.6 % 60-175 B1G1504 07/15/21 07/15/21 14:41 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 95.7 % 35-130 B1G1502 " 07/15/21 12:38 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.050
SV12-5 (2107188-19) Soil Sampled: 07/13/21 10:49 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 97.9 % 60-175 B1G1504 07/15/21 07/15/21 14:41 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 83.5 % 35-130 B1G1502 " 07/15/21 12:38 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.070
SV12-10 (2107188-20) Soil Sampled: 07/13/21 10:58 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 111 % 60-175 B1G1601 07/15/21 07/16/21 08:00 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 79.2 % 35-130 B1G1502 " 07/15/21 12:38 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.050

Page 29 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Total Petroleum Hydrocarbons Carbon Range Analysis by GC-FID Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV12-15 (2107188-21) Soil Sampled: 07/13/21 11:07 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 91.5 % 60-175 B1G1601 07/15/21 07/16/21 08:00 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 88.6 % 35-130 B1G1503 " 07/15/21 13:57 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.050
SV13-5 (2107188-22) Soil Sampled: 07/13/21 11:26 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 107 % 60-175 B1G1601 07/15/21 07/16/21 08:00 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 79.8 % 35-130 B1G1503 " 07/15/21 13:57 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.050
SV13-10 (2107188-23) Soil Sampled: 07/13/21 11:31 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 80.4 % 60-175 B1G1602 07/15/21 07/16/21 08:18 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 96.1 % 35-130 B1G1913 07/19/21 07/20/21 10:02 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.050
SV13-15 (2107188-24) Soil Sampled: 07/13/21 11:38 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 111 % 60-175 B1G1602 07/15/21 07/16/21 08:18 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 90.6 % 35-130 B1G1913 07/19/21 07/20/21 10:02 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.050

Page 30 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Total Petroleum Hydrocarbons Carbon Range Analysis by GC-FID Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV14-5 (2107188-25) Soil Sampled: 07/13/21 12:49 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 133 % 60-175 B1G1602 07/15/21 07/16/21 08:18 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 99.2 % 35-130 B1G1913 07/19/21 07/20/21 10:02 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.050
SV14-10 (2107188-26) Soil Sampled: 07/13/21 12:54 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 183 % 60-175 B1G1602 07/15/21 07/16/21 08:18 EPA 8015B S-07 Total Petroleum Hydrocarbons " " " " "
(C13-C22)
53 5.0 "
Total Petroleum Hydrocarbons " " " " "
(C23-C40)
180 5.0 "
Surrogate: a,a,a-Trifluorotoluene 91.6 % 35-130 B1G1913 07/19/21 07/20/21 10:02 " Total Petroleum Hydrocarbons " " " " "
(C4-C12)

0.21 0.050 "
SV14-15 (2107188-27) Soil Sampled: 07/13/21 13:01 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 71.9 % 60-175 B1G1602 07/15/21 07/16/21 08:18 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 96.1 % 35-130 B1G1913 07/19/21 07/20/21 10:02 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.050
SV15-5 (2107188-28) Soil Sampled: 07/13/21 13:19 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 85.8 % 60-175 B1G1602 07/15/21 07/16/21 08:18 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 82.0 % 35-130 B1G1913 07/19/21 07/20/21 10:02 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.060

Page 31 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Total Petroleum Hydrocarbons Carbon Range Analysis by GC-FID Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV15-10 (2107188-29) Soil Sampled: 07/13/21 13:23 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 66.1 % 60-175 B1G1602 07/15/21 07/16/21 08:18 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 90.3 % 35-130 B1G1913 07/19/21 07/20/21 10:02 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.056
SV15-15 (2107188-30) Soil Sampled: 07/13/21 13:27 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 98.6 % 60-175 B1G1602 07/15/21 07/16/21 08:18 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 83.7 % 35-130 B1G1913 07/19/21 07/20/21 10:02 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.065
SV16-5 (2107188-31) Soil Sampled: 07/13/21 13:54 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 148 % 60-175 B1G1602 07/15/21 07/16/21 08:18 EPA 8015B Total Petroleum Hydrocarbons " " " " "
(C13-C22)
190 10 "
Total Petroleum Hydrocarbons " " " " "
(C23-C40)
500 10 "
Surrogate: a,a,a-Trifluorotoluene 89.3 % 35-130 B1G1913 07/19/21 07/20/21 10:02 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.058
SV16-10 (2107188-32) Soil Sampled: 07/13/21 13:57 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 106 % 60-175 B1G1602 07/15/21 07/16/21 08:18 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 88.7 % 35-130 B1G1913 07/19/21 07/20/21 10:02 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.063

Page 32 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Total Petroleum Hydrocarbons Carbon Range Analysis by GC-FID Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV16-15 (2107188-33) Soil Sampled: 07/13/21 14:00 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 134 % 60-175 B1G1602 07/15/21 07/16/21 08:18 EPA 8015B Total Petroleum Hydrocarbons " " " " "
(C13-C22)
150 10 "
Total Petroleum Hydrocarbons " " " " "
(C23-C40)
200 10 "
Surrogate: a,a,a-Trifluorotoluene 86.4 % 35-130 B1G1913 07/19/21 07/20/21 10:02 " Total Petroleum Hydrocarbons " " " " "
(C4-C12)

0.26 0.059 "
SV17-5 (2107188-34) Soil Sampled: 07/13/21 14:44 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 85.6 % 60-175 B1G1602 07/15/21 07/16/21 08:18 EPA 8015B Total Petroleum Hydrocarbons " " " " "
(C13-C22)
34 10 "
Total Petroleum Hydrocarbons " " " " "
(C23-C40)
650 10 "
Surrogate: a,a,a-Trifluorotoluene 98.3 % 35-130 B1G1913 07/19/21 07/20/21 10:02 " Total Petroleum Hydrocarbons " " " " "
(C4-C12)

0.052 0.050 "
SV17-10 (2107188-35) Soil Sampled: 07/13/21 14:48 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 155 % 60-175 B1G1602 07/15/21 07/16/21 08:18 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " "
(C23-C40)
79 5.0 "
Surrogate: a,a,a-Trifluorotoluene 93.5 % 35-130 B1G1913 07/19/21 07/20/21 10:02 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.050
SV17-15 (2107188-36) Soil Sampled: 07/13/21 14:53 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 137 % 60-175 B1G1602 07/15/21 07/16/21 08:18 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " "
(C23-C40)
78 5.0 "
Surrogate: a,a,a-Trifluorotoluene 92.8 % 35-130 B1G1913 07/19/21 07/20/21 10:02 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.050

Page 33 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Total Petroleum Hydrocarbons Carbon Range Analysis by GC-FID Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV18-5 (2107188-37) Soil Sampled: 07/13/21 15:19 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 196 % 60-175 B1G1602 07/15/21 07/16/21 08:18 EPA 8015B S-07 Total Petroleum Hydrocarbons " " " " "
(C13-C22)
110 5.0 "
Total Petroleum Hydrocarbons " " " " "
(C23-C40)
600 5.0 "
Surrogate: a,a,a-Trifluorotoluene 76.6 % 35-130 B1G1913 07/19/21 07/20/21 10:02 " Total Petroleum Hydrocarbons " " " " " "
(C4-C12)
ND 0.10
SV18-10 (2107188-38) Soil Sampled: 07/13/21 15:25 Received: 07/13/21 17:07 Surrogate: o-Terphenyl % 60-175 B1G1602 07/15/21 07/16/21 08:18 EPA 8015B S-03 Total Petroleum Hydrocarbons " " " " "
(C13-C22)
1300 250 "
Total Petroleum Hydrocarbons " " " " "
(C23-C40)
2200 250 "
Surrogate: a,a,a-Trifluorotoluene 108 % 35-130 B1G1913 07/19/21 07/20/21 10:02 " Total Petroleum Hydrocarbons " 100 " " "
(C4-C12)
1100 6.3 "
SV18-15 (2107188-39) Soil Sampled: 07/13/21 15:29 Received: 07/13/21 17:07 Surrogate: o-Terphenyl 94.7 % 60-175 B1G1602 07/15/21 07/16/21 08:18 EPA 8015B Total Petroleum Hydrocarbons " " " " " "
(C13-C22)
ND 5.0
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 5.0
Surrogate: a,a,a-Trifluorotoluene 133 % 35-130 B1G1913 07/19/21 07/20/21 10:02 " S-07 Total Petroleum Hydrocarbons " " " " "
(C4-C12)

0.48 0.044 "
SV19-5 (2107188-40) Soil Sampled: 07/13/21 15:49 Received: 07/13/21 17:07 Surrogate: o-Terphenyl % 60-175 B1G1602 07/15/21 07/16/21 08:18 EPA 8015B S-03 Total Petroleum Hydrocarbons " " " " "
(C13-C22)
2400 250 "
Total Petroleum Hydrocarbons " " " " " "
(C23-C40)
ND 250
Surrogate: a,a,a-Trifluorotoluene 93.8 % 35-130 B1G1913 07/19/21 07/20/21 10:02 " Total Petroleum Hydrocarbons " 500 " " "
(C4-C12)
2600 25 "

Page 34 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Total Petroleum Hydrocarbons Carbon Range Analysis by GC-FID Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV19-10 (2107188-41) Soil Sampled: 07/13/21 15:54 Received: 07/13/21 17:07 Surrogate: o-Terphenyl % 60-175 B1G1602 07/15/21 07/16/21 08:18 EPA 8015B S-03 Total Petroleum Hydrocarbons " " " " "
(C13-C22)
590 25 "
Total Petroleum Hydrocarbons " " " " "
(C23-C40)
270 25 "
Surrogate: a,a,a-Trifluorotoluene 94.8 % 35-130 B1G1913 07/19/21 07/20/21 10:02 " Total Petroleum Hydrocarbons " 500 " " "
(C4-C12)
510 22 "
SV19-15 (2107188-42) Soil Sampled: 07/13/21 15:59 Received: 07/13/21 17:07 Surrogate: o-Terphenyl % 60-175 B1G1602 07/15/21 07/16/21 08:18 EPA 8015B S-03 Total Petroleum Hydrocarbons " " " " "
(C13-C22)
2500 250 "
Total Petroleum Hydrocarbons " " " " "
(C23-C40)
530 250 "
Surrogate: a,a,a-Trifluorotoluene 116 % 35-130 B1G1913 07/19/21 07/20/21 10:02 " Total Petroleum Hydrocarbons " 500 " " "
(C4-C12)
1500 25 "

Page 35 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV6-5 (2107188-01) Soil Sampled: 07/13/21 07:35 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 120 % 80-120 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Surrogate: Toluene-d8 99.9 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 97.5 % 74-121 " " " "
Benzene ND 5.8 " " " " " "
Bromobenzene ND 5.8 " " " " " "
Bromochloromethane ND 5.8 " " " " " "
Bromodichloromethane ND 5.8 " " " " " "
Bromoform ND 5.8 " " " " " "
Bromomethane ND 5.8 " " " " " "
n-Butylbenzene ND 5.8 " " " " " "
sec-Butylbenzene ND 5.8 " " " " " "
tert-Butylbenzene ND 5.8 " " " " " "
Carbon tetrachloride ND 5.8 " " " " " "
Chlorobenzene ND 5.8 " " " " " "
Chloroethane ND 5.8 " " " " " "
Chloroform ND 5.8 " " " " " "
Chloromethane ND 5.8 " " " " " "
2-Chlorotoluene ND 5.8 " " " " " "
4-Chlorotoluene ND 5.8 " " " " " "
Dibromochloromethane ND 5.8 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.8 " " " " " "
1,2-Dibromoethane (EDB) ND 5.8 " " " " " "
Dibromomethane ND 5.8 " " " " " "
1,2-Dichlorobenzene ND 5.8 " " " " " "
1,3-Dichlorobenzene ND 5.8 " " " " " "
1,4-Dichlorobenzene ND 5.8 " " " " " "
Dichlorodifluoromethane ND 5.8 " " " " " "
1,1-Dichloroethane ND 5.8 " " " " " "
1,2-Dichloroethane ND 5.8 " " " " " "
1,1-Dichloroethene ND 5.8 " " " " " "
cis-1,2-Dichloroethene ND 5.8 " " " " " "
trans-1,2-Dichloroethene ND 5.8 " " " " " "
1,2-Dichloropropane ND 5.8 " " " " " "
1,3-Dichloropropane ND 5.8 " " " " " "
2,2-Dichloropropane ND 5.8 " " " " " "
1,1-Dichloropropene ND 5.8 " " " " " "
cis-1,3-Dichloropropene ND 5.8 " " " " " "
trans-1,3-Dichloropropene ND 5.8 " " " " " "
Ethylbenzene ND 5.8 " " " " " "
Hexachlorobutadiene ND 5.8 " " " " " "
Isopropylbenzene ND 5.8 " " " " " "

Page 36 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV6-5 (2107188-01) Soil Sampled: 07/13/21 07:35 Received: 07/13/21 17:07 p-Isopropyltoluene ND 5.8 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Methylene chloride ND 5.8 " " " " " "
Methyl tert-butyl ether ND 5.8 " " " " " "
Naphthalene ND 5.8 " " " " " "
n-Propylbenzene ND 5.8 " " " " " "
Styrene ND 5.8 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.8 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.8 " " " " " "
Tetrachloroethene ND 5.8 " " " " " "
Toluene ND 5.8 " " " " " "
1,2,3-Trichlorobenzene ND 5.8 " " " " " "
1,2,4-Trichlorobenzene ND 5.8 " " " " " "
1,1,1-Trichloroethane ND 5.8 " " " " " "
1,1,2-Trichloroethane ND 5.8 " " " " " "
Trichloroethene ND 5.8 " " " " " "
Trichlorofluoromethane ND 5.8 " " " " " "
1,2,3-Trichloropropane ND 5.8 " " " " " "
1,2,4-Trimethylbenzene ND 5.8 " " " " " "
1,3,5-Trimethylbenzene ND 5.8 " " " " " "
Vinyl chloride ND 5.8 " " " " " "
m,p-Xylene ND 5.8 " " " " " "
o-Xylene ND 5.8 " " " " " "
SV6-10 (2107188-02) Soil Sampled: 07/13/21 07:44 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 100 % 80-120 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Surrogate: Toluene-d8 101 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 97.4 % 74-121 " " " "
Benzene ND 9.9 " " " " " "
Bromobenzene ND 9.9 " " " " " "
Bromochloromethane ND 9.9 " " " " " "
Bromodichloromethane ND 9.9 " " " " " "
Bromoform ND 9.9 " " " " " "
Bromomethane ND 9.9 " " " " " "
n-Butylbenzene ND 9.9 " " " " " "
sec-Butylbenzene ND 9.9 " " " " " "
tert-Butylbenzene ND 9.9 " " " " " "
Carbon tetrachloride ND 9.9 " " " " " "
Chlorobenzene ND 9.9 " " " " " "
Chloroethane ND 9.9 " " " " " "
Chloroform ND 9.9 " " " " " "
Chloromethane ND 9.9 " " " " " "

Page 37 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV6-10 (2107188-02) Soil Sampled: 07/13/21 07:44 Received: 07/13/21 17:07 2-Chlorotoluene ND 9.9 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B 4-Chlorotoluene ND 9.9 " " " " " "
Dibromochloromethane ND 9.9 " " " " " "
1,2-Dibromo-3-chloropropane ND 9.9 " " " " " "
1,2-Dibromoethane (EDB) ND 9.9 " " " " " "
Dibromomethane ND 9.9 " " " " " "
1,2-Dichlorobenzene ND 9.9 " " " " " "
1,3-Dichlorobenzene ND 9.9 " " " " " "
1,4-Dichlorobenzene ND 9.9 " " " " " "
Dichlorodifluoromethane ND 9.9 " " " " " "
1,1-Dichloroethane ND 9.9 " " " " " "
1,2-Dichloroethane ND 9.9 " " " " " "
1,1-Dichloroethene ND 9.9 " " " " " "
cis-1,2-Dichloroethene ND 9.9 " " " " " "
trans-1,2-Dichloroethene ND 9.9 " " " " " "
1,2-Dichloropropane ND 9.9 " " " " " "
1,3-Dichloropropane ND 9.9 " " " " " "
2,2-Dichloropropane ND 9.9 " " " " " "
1,1-Dichloropropene ND 9.9 " " " " " "
cis-1,3-Dichloropropene ND 9.9 " " " " " "
trans-1,3-Dichloropropene ND 9.9 " " " " " "
Ethylbenzene ND 9.9 " " " " " "
Hexachlorobutadiene ND 9.9 " " " " " "
Isopropylbenzene ND 9.9 " " " " " "
p-Isopropyltoluene ND 9.9 " " " " " "
Methylene chloride ND 9.9 " " " " " "
Methyl tert-butyl ether ND 9.9 " " " " " "
Naphthalene ND 9.9 " " " " " "
n-Propylbenzene ND 9.9 " " " " " "
Styrene ND 9.9 " " " " " "
1,1,1,2-Tetrachloroethane ND 9.9 " " " " " "
1,1,2,2-Tetrachloroethane ND 9.9 " " " " " "
Tetrachloroethene ND 9.9 " " " " " "
Toluene ND 9.9 " " " " " "
1,2,3-Trichlorobenzene ND 9.9 " " " " " "
1,2,4-Trichlorobenzene ND 9.9 " " " " " "
1,1,1-Trichloroethane ND 9.9 " " " " " "
1,1,2-Trichloroethane ND 9.9 " " " " " "
Trichloroethene ND 9.9 " " " " " "
Trichlorofluoromethane ND 9.9 " " " " " "
1,2,3-Trichloropropane ND 9.9 " " " " " "

Page 38 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV6-10 (2107188-02) Soil Sampled: 07/13/21 07:44 Received: 07/13/21 17:07 1,2,4-Trimethylbenzene ND 9.9 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B 1,3,5-Trimethylbenzene ND 9.9 " " " " " "
Vinyl chloride ND 9.9 " " " " " "
m,p-Xylene ND 9.9 " " " " " "
o-Xylene ND 9.9 " " " " " "
SV6-15 (2107188-03) Soil Sampled: 07/13/21 07:51 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 105 % 80-120 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Surrogate: Toluene-d8 101 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 98.3 % 74-121 " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "
2-Chlorotoluene ND 5.0 " " " " " "
4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "

Page 39 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV6-15 (2107188-03) Soil Sampled: 07/13/21 07:51 Received: 07/13/21 17:07 2,2-Dichloropropane ND 5.0 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B 1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "

Page 40 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV7-5 (2107188-04) Soil Sampled: 07/13/21 08:15 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 104 % 80-120 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Surrogate: Toluene-d8 99.7 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 95.7 % 74-121 " " " "
Benzene ND 6.0 " " " " " "
Bromobenzene ND 6.0 " " " " " "
Bromochloromethane ND 6.0 " " " " " "
Bromodichloromethane ND 6.0 " " " " " "
Bromoform ND 6.0 " " " " " "
Bromomethane ND 6.0 " " " " " "
n-Butylbenzene ND 6.0 " " " " " "
sec-Butylbenzene ND 6.0 " " " " " "
tert-Butylbenzene ND 6.0 " " " " " "
Carbon tetrachloride ND 6.0 " " " " " "
Chlorobenzene ND 6.0 " " " " " "
Chloroethane ND 6.0 " " " " " "
Chloroform ND 6.0 " " " " " "
Chloromethane ND 6.0 " " " " " "
2-Chlorotoluene ND 6.0 " " " " " "
4-Chlorotoluene ND 6.0 " " " " " "
Dibromochloromethane ND 6.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 6.0 " " " " " "
1,2-Dibromoethane (EDB) ND 6.0 " " " " " "
Dibromomethane ND 6.0 " " " " " "
1,2-Dichlorobenzene ND 6.0 " " " " " "
1,3-Dichlorobenzene ND 6.0 " " " " " "
1,4-Dichlorobenzene ND 6.0 " " " " " "
Dichlorodifluoromethane ND 6.0 " " " " " "
1,1-Dichloroethane ND 6.0 " " " " " "
1,2-Dichloroethane ND 6.0 " " " " " "
1,1-Dichloroethene ND 6.0 " " " " " "
cis-1,2-Dichloroethene ND 6.0 " " " " " "
trans-1,2-Dichloroethene ND 6.0 " " " " " "
1,2-Dichloropropane ND 6.0 " " " " " "
1,3-Dichloropropane ND 6.0 " " " " " "
2,2-Dichloropropane ND 6.0 " " " " " "
1,1-Dichloropropene ND 6.0 " " " " " "
cis-1,3-Dichloropropene ND 6.0 " " " " " "
trans-1,3-Dichloropropene ND 6.0 " " " " " "
Ethylbenzene ND 6.0 " " " " " "
Hexachlorobutadiene ND 6.0 " " " " " "
Isopropylbenzene ND 6.0 " " " " " "

Page 41 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV7-5 (2107188-04) Soil Sampled: 07/13/21 08:15 Received: 07/13/21 17:07 p-Isopropyltoluene ND 6.0 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Methylene chloride ND 6.0 " " " " " "
Methyl tert-butyl ether ND 6.0 " " " " " "
Naphthalene ND 6.0 " " " " " "
n-Propylbenzene ND 6.0 " " " " " "
Styrene ND 6.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 6.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 6.0 " " " " " "
Tetrachloroethene ND 6.0 " " " " " "
Toluene ND 6.0 " " " " " "
1,2,3-Trichlorobenzene ND 6.0 " " " " " "
1,2,4-Trichlorobenzene ND 6.0 " " " " " "
1,1,1-Trichloroethane ND 6.0 " " " " " "
1,1,2-Trichloroethane ND 6.0 " " " " " "
Trichloroethene ND 6.0 " " " " " "
Trichlorofluoromethane ND 6.0 " " " " " "
1,2,3-Trichloropropane ND 6.0 " " " " " "
1,2,4-Trimethylbenzene ND 6.0 " " " " " "
1,3,5-Trimethylbenzene ND 6.0 " " " " " "
Vinyl chloride ND 6.0 " " " " " "
m,p-Xylene ND 6.0 " " " " " "
o-Xylene ND 6.0 " " " " " "
SV7-10 (2107188-05) Soil Sampled: 07/13/21 08:25 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 103 % 80-120 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Surrogate: Toluene-d8 102 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 98.0 % 74-121 " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "

Page 42 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV7-10 (2107188-05) Soil Sampled: 07/13/21 08:25 Received: 07/13/21 17:07 2-Chlorotoluene ND 5.0 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B 4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "

Page 43 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV7-10 (2107188-05) Soil Sampled: 07/13/21 08:25 Received: 07/13/21 17:07 1,2,4-Trimethylbenzene ND 5.0 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B 1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "
SV7-15 (2107188-06) Soil Sampled: 07/13/21 08:30 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 101 % 80-120 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Surrogate: Toluene-d8 99.2 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 97.2 % 74-121 " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "
2-Chlorotoluene ND 5.0 " " " " " "
4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "

Page 44 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV7-15 (2107188-06) Soil Sampled: 07/13/21 08:30 Received: 07/13/21 17:07 2,2-Dichloropropane ND 5.0 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B 1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "

Page 45 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV8-5 (2107188-07) Soil Sampled: 07/13/21 08:56 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 109 % 80-120 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Surrogate: Toluene-d8 97.4 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 101 % 74-121 " " " "
Benzene ND 4.0 " " " " " "
Bromobenzene ND 4.0 " " " " " "
Bromochloromethane ND 4.0 " " " " " "
Bromodichloromethane ND 4.0 " " " " " "
Bromoform ND 4.0 " " " " " "
Bromomethane ND 4.0 " " " " " "
n-Butylbenzene ND 4.0 " " " " " "
sec-Butylbenzene ND 4.0 " " " " " "
tert-Butylbenzene ND 4.0 " " " " " "
Carbon tetrachloride ND 4.0 " " " " " "
Chlorobenzene ND 4.0 " " " " " "
Chloroethane ND 4.0 " " " " " "
Chloroform ND 4.0 " " " " " "
Chloromethane ND 4.0 " " " " " "
2-Chlorotoluene ND 4.0 " " " " " "
4-Chlorotoluene ND 4.0 " " " " " "
Dibromochloromethane ND 4.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 4.0 " " " " " "
1,2-Dibromoethane (EDB) ND 4.0 " " " " " "
Dibromomethane ND 4.0 " " " " " "
1,2-Dichlorobenzene ND 4.0 " " " " " "
1,3-Dichlorobenzene ND 4.0 " " " " " "
1,4-Dichlorobenzene ND 4.0 " " " " " "
Dichlorodifluoromethane ND 4.0 " " " " " "
1,1-Dichloroethane ND 4.0 " " " " " "
1,2-Dichloroethane ND 4.0 " " " " " "
1,1-Dichloroethene ND 4.0 " " " " " "
cis-1,2-Dichloroethene ND 4.0 " " " " " "
trans-1,2-Dichloroethene ND 4.0 " " " " " "
1,2-Dichloropropane ND 4.0 " " " " " "
1,3-Dichloropropane ND 4.0 " " " " " "
2,2-Dichloropropane ND 4.0 " " " " " "
1,1-Dichloropropene ND 4.0 " " " " " "
cis-1,3-Dichloropropene ND 4.0 " " " " " "
trans-1,3-Dichloropropene ND 4.0 " " " " " "
Ethylbenzene ND 4.0 " " " " " "
Hexachlorobutadiene ND 4.0 " " " " " "
Isopropylbenzene ND 4.0 " " " " " "

Page 46 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV8-5 (2107188-07) Soil Sampled: 07/13/21 08:56 Received: 07/13/21 17:07 p-Isopropyltoluene ND 4.0 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Methylene chloride ND 4.0 " " " " " "
Methyl tert-butyl ether ND 4.0 " " " " " "
Naphthalene ND 4.0 " " " " " "
n-Propylbenzene ND 4.0 " " " " " "
Styrene ND 4.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 4.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 4.0 " " " " " "
Tetrachloroethene ND 4.0 " " " " " "
Toluene ND 4.0 " " " " " "
1,2,3-Trichlorobenzene ND 4.0 " " " " " "
1,2,4-Trichlorobenzene ND 4.0 " " " " " "
1,1,1-Trichloroethane ND 4.0 " " " " " "
1,1,2-Trichloroethane ND 4.0 " " " " " "
Trichloroethene ND 4.0 " " " " " "
Trichlorofluoromethane ND 4.0 " " " " " "
1,2,3-Trichloropropane ND 4.0 " " " " " "
1,2,4-Trimethylbenzene ND 4.0 " " " " " "
1,3,5-Trimethylbenzene ND 4.0 " " " " " "
Vinyl chloride ND 4.0 " " " " " "
m,p-Xylene ND 4.0 " " " " " "
o-Xylene ND 4.0 " " " " " "
SV8-10 (2107188-08) Soil Sampled: 07/13/21 08:58 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 108 % 80-120 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Surrogate: Toluene-d8 99.9 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 97.1 % 74-121 " " " "
Benzene ND 4.4 " " " " " "
Bromobenzene ND 4.4 " " " " " "
Bromochloromethane ND 4.4 " " " " " "
Bromodichloromethane ND 4.4 " " " " " "
Bromoform ND 4.4 " " " " " "
Bromomethane ND 4.4 " " " " " "
n-Butylbenzene ND 4.4 " " " " " "
sec-Butylbenzene ND 4.4 " " " " " "
tert-Butylbenzene ND 4.4 " " " " " "
Carbon tetrachloride ND 4.4 " " " " " "
Chlorobenzene ND 4.4 " " " " " "
Chloroethane ND 4.4 " " " " " "
Chloroform ND 4.4 " " " " " "
Chloromethane ND 4.4 " " " " " "

Page 47 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV8-10 (2107188-08) Soil Sampled: 07/13/21 08:58 Received: 07/13/21 17:07 2-Chlorotoluene ND 4.4 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B 4-Chlorotoluene ND 4.4 " " " " " "
Dibromochloromethane ND 4.4 " " " " " "
1,2-Dibromo-3-chloropropane ND 4.4 " " " " " "
1,2-Dibromoethane (EDB) ND 4.4 " " " " " "
Dibromomethane ND 4.4 " " " " " "
1,2-Dichlorobenzene ND 4.4 " " " " " "
1,3-Dichlorobenzene ND 4.4 " " " " " "
1,4-Dichlorobenzene ND 4.4 " " " " " "
Dichlorodifluoromethane ND 4.4 " " " " " "
1,1-Dichloroethane ND 4.4 " " " " " "
1,2-Dichloroethane ND 4.4 " " " " " "
1,1-Dichloroethene ND 4.4 " " " " " "
cis-1,2-Dichloroethene ND 4.4 " " " " " "
trans-1,2-Dichloroethene ND 4.4 " " " " " "
1,2-Dichloropropane ND 4.4 " " " " " "
1,3-Dichloropropane ND 4.4 " " " " " "
2,2-Dichloropropane ND 4.4 " " " " " "
1,1-Dichloropropene ND 4.4 " " " " " "
cis-1,3-Dichloropropene ND 4.4 " " " " " "
trans-1,3-Dichloropropene ND 4.4 " " " " " "
Ethylbenzene ND 4.4 " " " " " "
Hexachlorobutadiene ND 4.4 " " " " " "
Isopropylbenzene ND 4.4 " " " " " "
p-Isopropyltoluene ND 4.4 " " " " " "
Methylene chloride ND 4.4 " " " " " "
Methyl tert-butyl ether ND 4.4 " " " " " "
Naphthalene ND 4.4 " " " " " "
n-Propylbenzene ND 4.4 " " " " " "
Styrene ND 4.4 " " " " " "
1,1,1,2-Tetrachloroethane ND 4.4 " " " " " "
1,1,2,2-Tetrachloroethane ND 4.4 " " " " " "
Tetrachloroethene ND 4.4 " " " " " "
Toluene ND 4.4 " " " " " "
1,2,3-Trichlorobenzene ND 4.4 " " " " " "
1,2,4-Trichlorobenzene ND 4.4 " " " " " "
1,1,1-Trichloroethane ND 4.4 " " " " " "
1,1,2-Trichloroethane ND 4.4 " " " " " "
Trichloroethene ND 4.4 " " " " " "
Trichlorofluoromethane ND 4.4 " " " " " "
1,2,3-Trichloropropane ND 4.4 " " " " " "

Page 48 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV8-10 (2107188-08) Soil Sampled: 07/13/21 08:58 Received: 07/13/21 17:07 1,2,4-Trimethylbenzene ND 4.4 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B 1,3,5-Trimethylbenzene ND 4.4 " " " " " "
Vinyl chloride ND 4.4 " " " " " "
m,p-Xylene ND 4.4 " " " " " "
o-Xylene ND 4.4 " " " " " "
SV8-15 (2107188-09) Soil Sampled: 07/13/21 09:06 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 108 % 80-120 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Surrogate: Toluene-d8 100 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 96.7 % 74-121 " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "
2-Chlorotoluene ND 5.0 " " " " " "
4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "

Page 49 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV8-15 (2107188-09) Soil Sampled: 07/13/21 09:06 Received: 07/13/21 17:07 2,2-Dichloropropane ND 5.0 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B 1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "

Page 50 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV9-5 (2107188-10) Soil Sampled: 07/13/21 09:19 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 115 % 80-120 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Surrogate: Toluene-d8 99.0 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 109 % 74-121 " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "
2-Chlorotoluene ND 5.0 " " " " " "
4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "

Page 51 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV9-5 (2107188-10) Soil Sampled: 07/13/21 09:19 Received: 07/13/21 17:07 p-Isopropyltoluene ND 5.0 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "
SV9-10 (2107188-11) Soil Sampled: 07/13/21 09:22 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 104 % 80-120 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Surrogate: Toluene-d8 99.6 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 95.7 % 74-121 " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "

Page 52 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV9-10 (2107188-11) Soil Sampled: 07/13/21 09:22 Received: 07/13/21 17:07 2-Chlorotoluene ND 5.0 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B 4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "

Page 53 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV9-10 (2107188-11) Soil Sampled: 07/13/21 09:22 Received: 07/13/21 17:07 1,2,4-Trimethylbenzene ND 5.0 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B 1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "
SV9-15 (2107188-12) Soil Sampled: 07/13/21 09:24 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 107 % 80-120 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Surrogate: Toluene-d8 102 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 95.3 % 74-121 " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "
2-Chlorotoluene ND 5.0 " " " " " "
4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "

Page 54 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV9-15 (2107188-12) Soil Sampled: 07/13/21 09:24 Received: 07/13/21 17:07 2,2-Dichloropropane ND 5.0 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B 1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "

Page 55 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV10-5 (2107188-13) Soil Sampled: 07/13/21 09:32 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 116 % 80-120 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Surrogate: Toluene-d8 99.7 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 114 % 74-121 " " " "
Benzene ND 5.6 " " " " " "
Bromobenzene ND 5.6 " " " " " "
Bromochloromethane ND 5.6 " " " " " "
Bromodichloromethane ND 5.6 " " " " " "
Bromoform ND 5.6 " " " " " "
Bromomethane ND 5.6 " " " " " "
n-Butylbenzene ND 5.6 " " " " " "
sec-Butylbenzene ND 5.6 " " " " " "
tert-Butylbenzene ND 5.6 " " " " " "
Carbon tetrachloride ND 5.6 " " " " " "
Chlorobenzene ND 5.6 " " " " " "
Chloroethane ND 5.6 " " " " " "
Chloroform ND 5.6 " " " " " "
Chloromethane ND 5.6 " " " " " "
2-Chlorotoluene ND 5.6 " " " " " "
4-Chlorotoluene ND 5.6 " " " " " "
Dibromochloromethane ND 5.6 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.6 " " " " " "
1,2-Dibromoethane (EDB) ND 5.6 " " " " " "
Dibromomethane ND 5.6 " " " " " "
1,2-Dichlorobenzene ND 5.6 " " " " " "
1,3-Dichlorobenzene ND 5.6 " " " " " "
1,4-Dichlorobenzene ND 5.6 " " " " " "
Dichlorodifluoromethane ND 5.6 " " " " " "
1,1-Dichloroethane ND 5.6 " " " " " "
1,2-Dichloroethane ND 5.6 " " " " " "
1,1-Dichloroethene ND 5.6 " " " " " "
cis-1,2-Dichloroethene ND 5.6 " " " " " "
trans-1,2-Dichloroethene ND 5.6 " " " " " "
1,2-Dichloropropane ND 5.6 " " " " " "
1,3-Dichloropropane ND 5.6 " " " " " "
2,2-Dichloropropane ND 5.6 " " " " " "
1,1-Dichloropropene ND 5.6 " " " " " "
cis-1,3-Dichloropropene ND 5.6 " " " " " "
trans-1,3-Dichloropropene ND 5.6 " " " " " "
Ethylbenzene ND 5.6 " " " " " "
Hexachlorobutadiene ND 5.6 " " " " " "
Isopropylbenzene ND 5.6 " " " " " "

Page 56 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV10-5 (2107188-13) Soil Sampled: 07/13/21 09:32 Received: 07/13/21 17:07 p-Isopropyltoluene ND 5.6 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Methylene chloride ND 5.6 " " " " " "
Methyl tert-butyl ether ND 5.6 " " " " " "
Naphthalene ND 5.6 " " " " " "
n-Propylbenzene ND 5.6 " " " " " "
Styrene ND 5.6 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.6 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.6 " " " " " "
Tetrachloroethene ND 5.6 " " " " " "
Toluene ND 5.6 " " " " " "
1,2,3-Trichlorobenzene ND 5.6 " " " " " "
1,2,4-Trichlorobenzene ND 5.6 " " " " " "
1,1,1-Trichloroethane ND 5.6 " " " " " "
1,1,2-Trichloroethane ND 5.6 " " " " " "
Trichloroethene ND 5.6 " " " " " "
Trichlorofluoromethane ND 5.6 " " " " " "
1,2,3-Trichloropropane ND 5.6 " " " " " "
1,2,4-Trimethylbenzene ND 5.6 " " " " " "
1,3,5-Trimethylbenzene ND 5.6 " " " " " "
Vinyl chloride ND 5.6 " " " " " "
m,p-Xylene ND 5.6 " " " " " "
o-Xylene ND 5.6 " " " " " "
SV10-10 (2107188-14) Soil Sampled: 07/13/21 09:36 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 106 % 80-120 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Surrogate: Toluene-d8 103 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 97.0 % 74-121 " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "

Page 57 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV10-10 (2107188-14) Soil Sampled: 07/13/21 09:36 Received: 07/13/21 17:07 2-Chlorotoluene ND 5.0 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B 4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "

Page 58 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV10-10 (2107188-14) Soil Sampled: 07/13/21 09:36 Received: 07/13/21 17:07 1,2,4-Trimethylbenzene ND 5.0 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B 1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "
SV10-15 (2107188-15) Soil Sampled: 07/13/21 09:52 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 119 % 80-120 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Surrogate: Toluene-d8 103 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 96.3 % 74-121 " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "
2-Chlorotoluene ND 5.0 " " " " " "
4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "

Page 59 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV10-15 (2107188-15) Soil Sampled: 07/13/21 09:52 Received: 07/13/21 17:07 2,2-Dichloropropane ND 5.0 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B 1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "

Page 60 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV11-5 (2107188-16) Soil Sampled: 07/13/21 10:16 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 105 % 80-120 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Surrogate: Toluene-d8 102 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 100 % 74-121 " " " "
Benzene ND 5.6 " " " " " "
Bromobenzene ND 5.6 " " " " " "
Bromochloromethane ND 5.6 " " " " " "
Bromodichloromethane ND 5.6 " " " " " "
Bromoform ND 5.6 " " " " " "
Bromomethane ND 5.6 " " " " " "
n-Butylbenzene ND 5.6 " " " " " "
sec-Butylbenzene ND 5.6 " " " " " "
tert-Butylbenzene ND 5.6 " " " " " "
Carbon tetrachloride ND 5.6 " " " " " "
Chlorobenzene ND 5.6 " " " " " "
Chloroethane ND 5.6 " " " " " "
Chloroform ND 5.6 " " " " " "
Chloromethane ND 5.6 " " " " " "
2-Chlorotoluene ND 5.6 " " " " " "
4-Chlorotoluene ND 5.6 " " " " " "
Dibromochloromethane ND 5.6 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.6 " " " " " "
1,2-Dibromoethane (EDB) ND 5.6 " " " " " "
Dibromomethane ND 5.6 " " " " " "
1,2-Dichlorobenzene ND 5.6 " " " " " "
1,3-Dichlorobenzene ND 5.6 " " " " " "
1,4-Dichlorobenzene ND 5.6 " " " " " "
Dichlorodifluoromethane ND 5.6 " " " " " "
1,1-Dichloroethane ND 5.6 " " " " " "
1,2-Dichloroethane ND 5.6 " " " " " "
1,1-Dichloroethene ND 5.6 " " " " " "
cis-1,2-Dichloroethene ND 5.6 " " " " " "
trans-1,2-Dichloroethene ND 5.6 " " " " " "
1,2-Dichloropropane ND 5.6 " " " " " "
1,3-Dichloropropane ND 5.6 " " " " " "
2,2-Dichloropropane ND 5.6 " " " " " "
1,1-Dichloropropene ND 5.6 " " " " " "
cis-1,3-Dichloropropene ND 5.6 " " " " " "
trans-1,3-Dichloropropene ND 5.6 " " " " " "
Ethylbenzene ND 5.6 " " " " " "
Hexachlorobutadiene ND 5.6 " " " " " "
Isopropylbenzene ND 5.6 " " " " " "

Page 61 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV11-5 (2107188-16) Soil Sampled: 07/13/21 10:16 Received: 07/13/21 17:07 p-Isopropyltoluene ND 5.6 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Methylene chloride ND 5.6 " " " " " "
Methyl tert-butyl ether ND 5.6 " " " " " "
Naphthalene ND 5.6 " " " " " "
n-Propylbenzene ND 5.6 " " " " " "
Styrene ND 5.6 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.6 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.6 " " " " " "
Tetrachloroethene ND 5.6 " " " " " "
Toluene ND 5.6 " " " " " "
1,2,3-Trichlorobenzene ND 5.6 " " " " " "
1,2,4-Trichlorobenzene ND 5.6 " " " " " "
1,1,1-Trichloroethane ND 5.6 " " " " " "
1,1,2-Trichloroethane ND 5.6 " " " " " "
Trichloroethene ND 5.6 " " " " " "
Trichlorofluoromethane ND 5.6 " " " " " "
1,2,3-Trichloropropane ND 5.6 " " " " " "
1,2,4-Trimethylbenzene ND 5.6 " " " " " "
1,3,5-Trimethylbenzene ND 5.6 " " " " " "
Vinyl chloride ND 5.6 " " " " " "
m,p-Xylene ND 5.6 " " " " " "
o-Xylene ND 5.6 " " " " " "
SV11-10 (2107188-17) Soil Sampled: 07/13/21 10:20 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 102 % 80-120 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Surrogate: Toluene-d8 98.3 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 99.1 % 74-121 " " " "
Benzene ND 5.8 " " " " " "
Bromobenzene ND 5.8 " " " " " "
Bromochloromethane ND 5.8 " " " " " "
Bromodichloromethane ND 5.8 " " " " " "
Bromoform ND 5.8 " " " " " "
Bromomethane ND 5.8 " " " " " "
n-Butylbenzene ND 5.8 " " " " " "
sec-Butylbenzene ND 5.8 " " " " " "
tert-Butylbenzene ND 5.8 " " " " " "
Carbon tetrachloride ND 5.8 " " " " " "
Chlorobenzene ND 5.8 " " " " " "
Chloroethane ND 5.8 " " " " " "
Chloroform ND 5.8 " " " " " "
Chloromethane ND 5.8 " " " " " "

Page 62 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV11-10 (2107188-17) Soil Sampled: 07/13/21 10:20 Received: 07/13/21 17:07 2-Chlorotoluene ND 5.8 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B 4-Chlorotoluene ND 5.8 " " " " " "
Dibromochloromethane ND 5.8 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.8 " " " " " "
1,2-Dibromoethane (EDB) ND 5.8 " " " " " "
Dibromomethane ND 5.8 " " " " " "
1,2-Dichlorobenzene ND 5.8 " " " " " "
1,3-Dichlorobenzene ND 5.8 " " " " " "
1,4-Dichlorobenzene ND 5.8 " " " " " "
Dichlorodifluoromethane ND 5.8 " " " " " "
1,1-Dichloroethane ND 5.8 " " " " " "
1,2-Dichloroethane ND 5.8 " " " " " "
1,1-Dichloroethene ND 5.8 " " " " " "
cis-1,2-Dichloroethene ND 5.8 " " " " " "
trans-1,2-Dichloroethene ND 5.8 " " " " " "
1,2-Dichloropropane ND 5.8 " " " " " "
1,3-Dichloropropane ND 5.8 " " " " " "
2,2-Dichloropropane ND 5.8 " " " " " "
1,1-Dichloropropene ND 5.8 " " " " " "
cis-1,3-Dichloropropene ND 5.8 " " " " " "
trans-1,3-Dichloropropene ND 5.8 " " " " " "
Ethylbenzene ND 5.8 " " " " " "
Hexachlorobutadiene ND 5.8 " " " " " "
Isopropylbenzene ND 5.8 " " " " " "
p-Isopropyltoluene ND 5.8 " " " " " "
Methylene chloride ND 5.8 " " " " " "
Methyl tert-butyl ether ND 5.8 " " " " " "
Naphthalene ND 5.8 " " " " " "
n-Propylbenzene ND 5.8 " " " " " "
Styrene ND 5.8 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.8 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.8 " " " " " "
Tetrachloroethene ND 5.8 " " " " " "
Toluene ND 5.8 " " " " " "
1,2,3-Trichlorobenzene ND 5.8 " " " " " "
1,2,4-Trichlorobenzene ND 5.8 " " " " " "
1,1,1-Trichloroethane ND 5.8 " " " " " "
1,1,2-Trichloroethane ND 5.8 " " " " " "
Trichloroethene ND 5.8 " " " " " "
Trichlorofluoromethane ND 5.8 " " " " " "
1,2,3-Trichloropropane ND 5.8 " " " " " "

Page 63 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV11-10 (2107188-17) Soil Sampled: 07/13/21 10:20 Received: 07/13/21 17:07 1,2,4-Trimethylbenzene ND 5.8 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B 1,3,5-Trimethylbenzene ND 5.8 " " " " " "
Vinyl chloride ND 5.8 " " " " " "
m,p-Xylene ND 5.8 " " " " " "
o-Xylene ND 5.8 " " " " " "
SV11-15 (2107188-18) Soil Sampled: 07/13/21 10:26 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 106 % 80-120 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Surrogate: Toluene-d8 102 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 96.2 % 74-121 " " " "
Benzene ND 6.4 " " " " " "
Bromobenzene ND 6.4 " " " " " "
Bromochloromethane ND 6.4 " " " " " "
Bromodichloromethane ND 6.4 " " " " " "
Bromoform ND 6.4 " " " " " "
Bromomethane ND 6.4 " " " " " "
n-Butylbenzene ND 6.4 " " " " " "
sec-Butylbenzene ND 6.4 " " " " " "
tert-Butylbenzene ND 6.4 " " " " " "
Carbon tetrachloride ND 6.4 " " " " " "
Chlorobenzene ND 6.4 " " " " " "
Chloroethane ND 6.4 " " " " " "
Chloroform ND 6.4 " " " " " "
Chloromethane ND 6.4 " " " " " "
2-Chlorotoluene ND 6.4 " " " " " "
4-Chlorotoluene ND 6.4 " " " " " "
Dibromochloromethane ND 6.4 " " " " " "
1,2-Dibromo-3-chloropropane ND 6.4 " " " " " "
1,2-Dibromoethane (EDB) ND 6.4 " " " " " "
Dibromomethane ND 6.4 " " " " " "
1,2-Dichlorobenzene ND 6.4 " " " " " "
1,3-Dichlorobenzene ND 6.4 " " " " " "
1,4-Dichlorobenzene ND 6.4 " " " " " "
Dichlorodifluoromethane ND 6.4 " " " " " "
1,1-Dichloroethane ND 6.4 " " " " " "
1,2-Dichloroethane ND 6.4 " " " " " "
1,1-Dichloroethene ND 6.4 " " " " " "
cis-1,2-Dichloroethene ND 6.4 " " " " " "
trans-1,2-Dichloroethene ND 6.4 " " " " " "
1,2-Dichloropropane ND 6.4 " " " " " "
1,3-Dichloropropane ND 6.4 " " " " " "

Page 64 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV11-15 (2107188-18) Soil Sampled: 07/13/21 10:26 Received: 07/13/21 17:07 2,2-Dichloropropane ND 6.4 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B 1,1-Dichloropropene ND 6.4 " " " " " "
cis-1,3-Dichloropropene ND 6.4 " " " " " "
trans-1,3-Dichloropropene ND 6.4 " " " " " "
Ethylbenzene ND 6.4 " " " " " "
Hexachlorobutadiene ND 6.4 " " " " " "
Isopropylbenzene ND 6.4 " " " " " "
p-Isopropyltoluene ND 6.4 " " " " " "
Methylene chloride ND 6.4 " " " " " "
Methyl tert-butyl ether ND 6.4 " " " " " "
Naphthalene ND 6.4 " " " " " "
n-Propylbenzene ND 6.4 " " " " " "
Styrene ND 6.4 " " " " " "
1,1,1,2-Tetrachloroethane ND 6.4 " " " " " "
1,1,2,2-Tetrachloroethane ND 6.4 " " " " " "
Tetrachloroethene ND 6.4 " " " " " "
Toluene ND 6.4 " " " " " "
1,2,3-Trichlorobenzene ND 6.4 " " " " " "
1,2,4-Trichlorobenzene ND 6.4 " " " " " "
1,1,1-Trichloroethane ND 6.4 " " " " " "
1,1,2-Trichloroethane ND 6.4 " " " " " "
Trichloroethene ND 6.4 " " " " " "
Trichlorofluoromethane ND 6.4 " " " " " "
1,2,3-Trichloropropane ND 6.4 " " " " " "
1,2,4-Trimethylbenzene ND 6.4 " " " " " "
1,3,5-Trimethylbenzene ND 6.4 " " " " " "
Vinyl chloride ND 6.4 " " " " " "
m,p-Xylene ND 6.4 " " " " " "
o-Xylene ND 6.4 " " " " " "

Page 65 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV12-5 (2107188-19) Soil Sampled: 07/13/21 10:49 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 110 % 80-120 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Surrogate: Toluene-d8 101 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 95.6 % 74-121 " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "
2-Chlorotoluene ND 5.0 " " " " " "
4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "

Page 66 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV12-5 (2107188-19) Soil Sampled: 07/13/21 10:49 Received: 07/13/21 17:07 p-Isopropyltoluene ND 5.0 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "
SV12-10 (2107188-20) Soil Sampled: 07/13/21 10:58 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 106 % 80-120 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B Surrogate: Toluene-d8 101 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 97.4 % 74-121 " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "

Page 67 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV12-10 (2107188-20) Soil Sampled: 07/13/21 10:58 Received: 07/13/21 17:07 2-Chlorotoluene ND 5.0 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B 4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "

Page 68 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV12-10 (2107188-20) Soil Sampled: 07/13/21 10:58 Received: 07/13/21 17:07 1,2,4-Trimethylbenzene ND 5.0 µg/kg 1 B1G1407 07/14/21 07/15/21 07:36 EPA 8260B 1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "
SV12-15 (2107188-21) Soil Sampled: 07/13/21 11:07 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 102 % 80-120 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Surrogate: Toluene-d8 99.5 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 98.6 % 74-121 " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "
2-Chlorotoluene ND 5.0 " " " " " "
4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "

Page 69 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV12-15 (2107188-21) Soil Sampled: 07/13/21 11:07 Received: 07/13/21 17:07 2,2-Dichloropropane ND 5.0 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B 1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "

Page 70 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV13-5 (2107188-22) Soil Sampled: 07/13/21 11:26 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 107 % 80-120 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Surrogate: Toluene-d8 98.9 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 97.6 % 74-121 " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "
2-Chlorotoluene ND 5.0 " " " " " "
4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "

Page 71 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV13-5 (2107188-22) Soil Sampled: 07/13/21 11:26 Received: 07/13/21 17:07 p-Isopropyltoluene ND 5.0 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "
SV13-10 (2107188-23) Soil Sampled: 07/13/21 11:31 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 104 % 80-120 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Surrogate: Toluene-d8 101 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 100 % 74-121 " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "

Page 72 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV13-10 (2107188-23) Soil Sampled: 07/13/21 11:31 Received: 07/13/21 17:07 2-Chlorotoluene ND 5.0 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B 4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "

Page 73 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV13-10 (2107188-23) Soil Sampled: 07/13/21 11:31 Received: 07/13/21 17:07 1,2,4-Trimethylbenzene ND 5.0 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B 1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "
SV13-15 (2107188-24) Soil Sampled: 07/13/21 11:38 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 106 % 80-120 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Surrogate: Toluene-d8 101 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 97.4 % 74-121 " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "
2-Chlorotoluene ND 5.0 " " " " " "
4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "

Page 74 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV13-15 (2107188-24) Soil Sampled: 07/13/21 11:38 Received: 07/13/21 17:07 2,2-Dichloropropane ND 5.0 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B 1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "

Page 75 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV14-5 (2107188-25) Soil Sampled: 07/13/21 12:49 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 104 % 80-120 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Surrogate: Toluene-d8 103 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 99.6 % 74-121 " " " "
Benzene ND 5.6 " " " " " "
Bromobenzene ND 5.6 " " " " " "
Bromochloromethane ND 5.6 " " " " " "
Bromodichloromethane ND 5.6 " " " " " "
Bromoform ND 5.6 " " " " " "
Bromomethane ND 5.6 " " " " " "
n-Butylbenzene ND 5.6 " " " " " "
sec-Butylbenzene ND 5.6 " " " " " "
tert-Butylbenzene ND 5.6 " " " " " "
Carbon tetrachloride ND 5.6 " " " " " "
Chlorobenzene ND 5.6 " " " " " "
Chloroethane ND 5.6 " " " " " "
Chloroform ND 5.6 " " " " " "
Chloromethane ND 5.6 " " " " " "
2-Chlorotoluene ND 5.6 " " " " " "
4-Chlorotoluene ND 5.6 " " " " " "
Dibromochloromethane ND 5.6 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.6 " " " " " "
1,2-Dibromoethane (EDB) ND 5.6 " " " " " "
Dibromomethane ND 5.6 " " " " " "
1,2-Dichlorobenzene ND 5.6 " " " " " "
1,3-Dichlorobenzene ND 5.6 " " " " " "
1,4-Dichlorobenzene ND 5.6 " " " " " "
Dichlorodifluoromethane ND 5.6 " " " " " "
1,1-Dichloroethane ND 5.6 " " " " " "
1,2-Dichloroethane ND 5.6 " " " " " "
1,1-Dichloroethene ND 5.6 " " " " " "
cis-1,2-Dichloroethene ND 5.6 " " " " " "
trans-1,2-Dichloroethene ND 5.6 " " " " " "
1,2-Dichloropropane ND 5.6 " " " " " "
1,3-Dichloropropane ND 5.6 " " " " " "
2,2-Dichloropropane ND 5.6 " " " " " "
1,1-Dichloropropene ND 5.6 " " " " " "
cis-1,3-Dichloropropene ND 5.6 " " " " " "
trans-1,3-Dichloropropene ND 5.6 " " " " " "
Ethylbenzene ND 5.6 " " " " " "
Hexachlorobutadiene ND 5.6 " " " " " "
Isopropylbenzene ND 5.6 " " " " " "

Page 76 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV14-5 (2107188-25) Soil Sampled: 07/13/21 12:49 Received: 07/13/21 17:07 p-Isopropyltoluene ND 5.6 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Methylene chloride ND 5.6 " " " " " "
Methyl tert-butyl ether ND 5.6 " " " " " "
Naphthalene ND 5.6 " " " " " "
n-Propylbenzene ND 5.6 " " " " " "
Styrene ND 5.6 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.6 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.6 " " " " " "
Tetrachloroethene ND 5.6 " " " " " "
Toluene ND 5.6 " " " " " "
1,2,3-Trichlorobenzene ND 5.6 " " " " " "
1,2,4-Trichlorobenzene ND 5.6 " " " " " "
1,1,1-Trichloroethane ND 5.6 " " " " " "
1,1,2-Trichloroethane ND 5.6 " " " " " "
Trichloroethene ND 5.6 " " " " " "
Trichlorofluoromethane ND 5.6 " " " " " "
1,2,3-Trichloropropane ND 5.6 " " " " " "
1,2,4-Trimethylbenzene ND 5.6 " " " " " "
1,3,5-Trimethylbenzene ND 5.6 " " " " " "
Vinyl chloride ND 5.6 " " " " " "
m,p-Xylene ND 5.6 " " " " " "
o-Xylene ND 5.6 " " " " " "
SV14-10 (2107188-26) Soil Sampled: 07/13/21 12:54 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 104 % 80-120 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Surrogate: Toluene-d8 103 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 100 % 74-121 " " " "
Benzene ND 5.9 " " " " " "
Bromobenzene ND 5.9 " " " " " "
Bromochloromethane ND 5.9 " " " " " "
Bromodichloromethane ND 5.9 " " " " " "
Bromoform ND 5.9 " " " " " "
Bromomethane ND 5.9 " " " " " "
n-Butylbenzene ND 5.9 " " " " " "
sec-Butylbenzene ND 5.9 " " " " " "
tert-Butylbenzene ND 5.9 " " " " " "
Carbon tetrachloride ND 5.9 " " " " " "
Chlorobenzene ND 5.9 " " " " " "
Chloroethane ND 5.9 " " " " " "
Chloroform ND 5.9 " " " " " "
Chloromethane ND 5.9 " " " " " "

Page 77 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV14-10 (2107188-26) Soil Sampled: 07/13/21 12:54 Received: 07/13/21 17:07 2-Chlorotoluene ND 5.9 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B 4-Chlorotoluene ND 5.9 " " " " " "
Dibromochloromethane ND 5.9 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.9 " " " " " "
1,2-Dibromoethane (EDB) ND 5.9 " " " " " "
Dibromomethane ND 5.9 " " " " " "
1,2-Dichlorobenzene ND 5.9 " " " " " "
1,3-Dichlorobenzene ND 5.9 " " " " " "
1,4-Dichlorobenzene ND 5.9 " " " " " "
Dichlorodifluoromethane ND 5.9 " " " " " "
1,1-Dichloroethane ND 5.9 " " " " " "
1,2-Dichloroethane ND 5.9 " " " " " "
1,1-Dichloroethene ND 5.9 " " " " " "
cis-1,2-Dichloroethene ND 5.9 " " " " " "
trans-1,2-Dichloroethene ND 5.9 " " " " " "
1,2-Dichloropropane ND 5.9 " " " " " "
1,3-Dichloropropane ND 5.9 " " " " " "
2,2-Dichloropropane ND 5.9 " " " " " "
1,1-Dichloropropene ND 5.9 " " " " " "
cis-1,3-Dichloropropene ND 5.9 " " " " " "
trans-1,3-Dichloropropene ND 5.9 " " " " " "
Ethylbenzene 23 5.9 " " " " " "
Hexachlorobutadiene ND 5.9 " " " " " "
Isopropylbenzene ND 5.9 " " " " " "
p-Isopropyltoluene ND 5.9 " " " " " "
Methylene chloride ND 5.9 " " " " " "
Methyl tert-butyl ether ND 5.9 " " " " " "
Naphthalene ND 5.9 " " " " " "
n-Propylbenzene ND 5.9 " " " " " "
Styrene ND 5.9 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.9 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.9 " " " " " "
Tetrachloroethene ND 5.9 " " " " " "
Toluene ND 5.9 " " " " " "
1,2,3-Trichlorobenzene ND 5.9 " " " " " "
1,2,4-Trichlorobenzene ND 5.9 " " " " " "
1,1,1-Trichloroethane ND 5.9 " " " " " "
1,1,2-Trichloroethane ND 5.9 " " " " " "
Trichloroethene ND 5.9 " " " " " "
Trichlorofluoromethane ND 5.9 " " " " " "
1,2,3-Trichloropropane ND 5.9 " " " " " "

Page 78 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV14-10 (2107188-26) Soil Sampled: 07/13/21 12:54 Received: 07/13/21 17:07 1,2,4-Trimethylbenzene ND 5.9 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B 1,3,5-Trimethylbenzene ND 5.9 " " " " " "
Vinyl chloride ND 5.9 " " " " " "
m,p-Xylene 110 5.9 " " " " " "
o-Xylene 43 5.9 " " " " " "
SV14-15 (2107188-27) Soil Sampled: 07/13/21 13:01 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 101 % 80-120 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Surrogate: Toluene-d8 102 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 98.9 % 74-121 " " " "
Benzene ND 5.7 " " " " " "
Bromobenzene ND 5.7 " " " " " "
Bromochloromethane ND 5.7 " " " " " "
Bromodichloromethane ND 5.7 " " " " " "
Bromoform ND 5.7 " " " " " "
Bromomethane ND 5.7 " " " " " "
n-Butylbenzene ND 5.7 " " " " " "
sec-Butylbenzene ND 5.7 " " " " " "
tert-Butylbenzene ND 5.7 " " " " " "
Carbon tetrachloride ND 5.7 " " " " " "
Chlorobenzene ND 5.7 " " " " " "
Chloroethane ND 5.7 " " " " " "
Chloroform ND 5.7 " " " " " "
Chloromethane ND 5.7 " " " " " "
2-Chlorotoluene ND 5.7 " " " " " "
4-Chlorotoluene ND 5.7 " " " " " "
Dibromochloromethane ND 5.7 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.7 " " " " " "
1,2-Dibromoethane (EDB) ND 5.7 " " " " " "
Dibromomethane ND 5.7 " " " " " "
1,2-Dichlorobenzene ND 5.7 " " " " " "
1,3-Dichlorobenzene ND 5.7 " " " " " "
1,4-Dichlorobenzene ND 5.7 " " " " " "
Dichlorodifluoromethane ND 5.7 " " " " " "
1,1-Dichloroethane ND 5.7 " " " " " "
1,2-Dichloroethane ND 5.7 " " " " " "
1,1-Dichloroethene ND 5.7 " " " " " "
cis-1,2-Dichloroethene ND 5.7 " " " " " "
trans-1,2-Dichloroethene ND 5.7 " " " " " "
1,2-Dichloropropane ND 5.7 " " " " " "
1,3-Dichloropropane ND 5.7 " " " " " "

Page 79 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV14-15 (2107188-27) Soil Sampled: 07/13/21 13:01 Received: 07/13/21 17:07 2,2-Dichloropropane ND 5.7 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B 1,1-Dichloropropene ND 5.7 " " " " " "
cis-1,3-Dichloropropene ND 5.7 " " " " " "
trans-1,3-Dichloropropene ND 5.7 " " " " " "
Ethylbenzene ND 5.7 " " " " " "
Hexachlorobutadiene ND 5.7 " " " " " "
Isopropylbenzene ND 5.7 " " " " " "
p-Isopropyltoluene ND 5.7 " " " " " "
Methylene chloride ND 5.7 " " " " " "
Methyl tert-butyl ether ND 5.7 " " " " " "
Naphthalene ND 5.7 " " " " " "
n-Propylbenzene ND 5.7 " " " " " "
Styrene ND 5.7 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.7 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.7 " " " " " "
Tetrachloroethene ND 5.7 " " " " " "
Toluene ND 5.7 " " " " " "
1,2,3-Trichlorobenzene ND 5.7 " " " " " "
1,2,4-Trichlorobenzene ND 5.7 " " " " " "
1,1,1-Trichloroethane ND 5.7 " " " " " "
1,1,2-Trichloroethane ND 5.7 " " " " " "
Trichloroethene ND 5.7 " " " " " "
Trichlorofluoromethane ND 5.7 " " " " " "
1,2,3-Trichloropropane ND 5.7 " " " " " "
1,2,4-Trimethylbenzene ND 5.7 " " " " " "
1,3,5-Trimethylbenzene ND 5.7 " " " " " "
Vinyl chloride ND 5.7 " " " " " "
m,p-Xylene ND 5.7 " " " " " "
o-Xylene ND 5.7 " " " " " "

Page 80 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV15-5 (2107188-28) Soil Sampled: 07/13/21 13:19 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 101 % 80-120 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Surrogate: Toluene-d8 102 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 95.7 % 74-121 " " " "
Benzene ND 8.7 " " " " " "
Bromobenzene ND 8.7 " " " " " "
Bromochloromethane ND 8.7 " " " " " "
Bromodichloromethane ND 8.7 " " " " " "
Bromoform ND 8.7 " " " " " "
Bromomethane ND 8.7 " " " " " "
n-Butylbenzene ND 8.7 " " " " " "
sec-Butylbenzene ND 8.7 " " " " " "
tert-Butylbenzene ND 8.7 " " " " " "
Carbon tetrachloride ND 8.7 " " " " " "
Chlorobenzene ND 8.7 " " " " " "
Chloroethane ND 8.7 " " " " " "
Chloroform ND 8.7 " " " " " "
Chloromethane ND 8.7 " " " " " "
2-Chlorotoluene ND 8.7 " " " " " "
4-Chlorotoluene ND 8.7 " " " " " "
Dibromochloromethane ND 8.7 " " " " " "
1,2-Dibromo-3-chloropropane ND 8.7 " " " " " "
1,2-Dibromoethane (EDB) ND 8.7 " " " " " "
Dibromomethane ND 8.7 " " " " " "
1,2-Dichlorobenzene ND 8.7 " " " " " "
1,3-Dichlorobenzene ND 8.7 " " " " " "
1,4-Dichlorobenzene ND 8.7 " " " " " "
Dichlorodifluoromethane ND 8.7 " " " " " "
1,1-Dichloroethane ND 8.7 " " " " " "
1,2-Dichloroethane ND 8.7 " " " " " "
1,1-Dichloroethene ND 8.7 " " " " " "
cis-1,2-Dichloroethene ND 8.7 " " " " " "
trans-1,2-Dichloroethene ND 8.7 " " " " " "
1,2-Dichloropropane ND 8.7 " " " " " "
1,3-Dichloropropane ND 8.7 " " " " " "
2,2-Dichloropropane ND 8.7 " " " " " "
1,1-Dichloropropene ND 8.7 " " " " " "
cis-1,3-Dichloropropene ND 8.7 " " " " " "
trans-1,3-Dichloropropene ND 8.7 " " " " " "
Ethylbenzene ND 8.7 " " " " " "
Hexachlorobutadiene ND 8.7 " " " " " "
Isopropylbenzene ND 8.7 " " " " " "

Page 81 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV15-5 (2107188-28) Soil Sampled: 07/13/21 13:19 Received: 07/13/21 17:07 p-Isopropyltoluene ND 8.7 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Methylene chloride ND 8.7 " " " " " "
Methyl tert-butyl ether ND 8.7 " " " " " "
Naphthalene ND 8.7 " " " " " "
n-Propylbenzene ND 8.7 " " " " " "
Styrene ND 8.7 " " " " " "
1,1,1,2-Tetrachloroethane ND 8.7 " " " " " "
1,1,2,2-Tetrachloroethane ND 8.7 " " " " " "
Tetrachloroethene ND 8.7 " " " " " "
Toluene ND 8.7 " " " " " "
1,2,3-Trichlorobenzene ND 8.7 " " " " " "
1,2,4-Trichlorobenzene ND 8.7 " " " " " "
1,1,1-Trichloroethane ND 8.7 " " " " " "
1,1,2-Trichloroethane ND 8.7 " " " " " "
Trichloroethene ND 8.7 " " " " " "
Trichlorofluoromethane ND 8.7 " " " " " "
1,2,3-Trichloropropane ND 8.7 " " " " " "
1,2,4-Trimethylbenzene ND 8.7 " " " " " "
1,3,5-Trimethylbenzene ND 8.7 " " " " " "
Vinyl chloride ND 8.7 " " " " " "
m,p-Xylene ND 8.7 " " " " " "
o-Xylene ND 8.7 " " " " " "
SV15-10 (2107188-29) Soil Sampled: 07/13/21 13:23 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 107 % 80-120 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Surrogate: Toluene-d8 101 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 98.2 % 74-121 " " " "
Benzene ND 6.0 " " " " " "
Bromobenzene ND 6.0 " " " " " "
Bromochloromethane ND 6.0 " " " " " "
Bromodichloromethane ND 6.0 " " " " " "
Bromoform ND 6.0 " " " " " "
Bromomethane ND 6.0 " " " " " "
n-Butylbenzene ND 6.0 " " " " " "
sec-Butylbenzene ND 6.0 " " " " " "
tert-Butylbenzene ND 6.0 " " " " " "
Carbon tetrachloride ND 6.0 " " " " " "
Chlorobenzene ND 6.0 " " " " " "
Chloroethane ND 6.0 " " " " " "
Chloroform ND 6.0 " " " " " "
Chloromethane ND 6.0 " " " " " "

Page 82 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV15-10 (2107188-29) Soil Sampled: 07/13/21 13:23 Received: 07/13/21 17:07 2-Chlorotoluene ND 6.0 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B 4-Chlorotoluene ND 6.0 " " " " " "
Dibromochloromethane ND 6.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 6.0 " " " " " "
1,2-Dibromoethane (EDB) ND 6.0 " " " " " "
Dibromomethane ND 6.0 " " " " " "
1,2-Dichlorobenzene ND 6.0 " " " " " "
1,3-Dichlorobenzene ND 6.0 " " " " " "
1,4-Dichlorobenzene ND 6.0 " " " " " "
Dichlorodifluoromethane ND 6.0 " " " " " "
1,1-Dichloroethane ND 6.0 " " " " " "
1,2-Dichloroethane ND 6.0 " " " " " "
1,1-Dichloroethene ND 6.0 " " " " " "
cis-1,2-Dichloroethene ND 6.0 " " " " " "
trans-1,2-Dichloroethene ND 6.0 " " " " " "
1,2-Dichloropropane ND 6.0 " " " " " "
1,3-Dichloropropane ND 6.0 " " " " " "
2,2-Dichloropropane ND 6.0 " " " " " "
1,1-Dichloropropene ND 6.0 " " " " " "
cis-1,3-Dichloropropene ND 6.0 " " " " " "
trans-1,3-Dichloropropene ND 6.0 " " " " " "
Ethylbenzene ND 6.0 " " " " " "
Hexachlorobutadiene ND 6.0 " " " " " "
Isopropylbenzene ND 6.0 " " " " " "
p-Isopropyltoluene ND 6.0 " " " " " "
Methylene chloride ND 6.0 " " " " " "
Methyl tert-butyl ether ND 6.0 " " " " " "
Naphthalene ND 6.0 " " " " " "
n-Propylbenzene ND 6.0 " " " " " "
Styrene ND 6.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 6.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 6.0 " " " " " "
Tetrachloroethene ND 6.0 " " " " " "
Toluene ND 6.0 " " " " " "
1,2,3-Trichlorobenzene ND 6.0 " " " " " "
1,2,4-Trichlorobenzene ND 6.0 " " " " " "
1,1,1-Trichloroethane ND 6.0 " " " " " "
1,1,2-Trichloroethane ND 6.0 " " " " " "
Trichloroethene ND 6.0 " " " " " "
Trichlorofluoromethane ND 6.0 " " " " " "
1,2,3-Trichloropropane ND 6.0 " " " " " "

Page 83 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV15-10 (2107188-29) Soil Sampled: 07/13/21 13:23 Received: 07/13/21 17:07 1,2,4-Trimethylbenzene ND 6.0 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B 1,3,5-Trimethylbenzene ND 6.0 " " " " " "
Vinyl chloride ND 6.0 " " " " " "
m,p-Xylene ND 6.0 " " " " " "
o-Xylene ND 6.0 " " " " " "
SV15-15 (2107188-30) Soil Sampled: 07/13/21 13:27 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 109 % 80-120 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Surrogate: Toluene-d8 100 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 97.1 % 74-121 " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "
2-Chlorotoluene ND 5.0 " " " " " "
4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "

Page 84 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV15-15 (2107188-30) Soil Sampled: 07/13/21 13:27 Received: 07/13/21 17:07 2,2-Dichloropropane ND 5.0 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B 1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "

Page 85 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV16-5 (2107188-31) Soil Sampled: 07/13/21 13:54 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 105 % 80-120 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Surrogate: Toluene-d8 100 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 101 % 74-121 " " " "
Benzene ND 6.4 " " " " " "
Bromobenzene ND 6.4 " " " " " "
Bromochloromethane ND 6.4 " " " " " "
Bromodichloromethane ND 6.4 " " " " " "
Bromoform ND 6.4 " " " " " "
Bromomethane ND 6.4 " " " " " "
n-Butylbenzene ND 6.4 " " " " " "
sec-Butylbenzene ND 6.4 " " " " " "
tert-Butylbenzene ND 6.4 " " " " " "
Carbon tetrachloride ND 6.4 " " " " " "
Chlorobenzene ND 6.4 " " " " " "
Chloroethane ND 6.4 " " " " " "
Chloroform ND 6.4 " " " " " "
Chloromethane ND 6.4 " " " " " "
2-Chlorotoluene ND 6.4 " " " " " "
4-Chlorotoluene ND 6.4 " " " " " "
Dibromochloromethane ND 6.4 " " " " " "
1,2-Dibromo-3-chloropropane ND 6.4 " " " " " "
1,2-Dibromoethane (EDB) ND 6.4 " " " " " "
Dibromomethane ND 6.4 " " " " " "
1,2-Dichlorobenzene ND 6.4 " " " " " "
1,3-Dichlorobenzene ND 6.4 " " " " " "
1,4-Dichlorobenzene ND 6.4 " " " " " "
Dichlorodifluoromethane ND 6.4 " " " " " "
1,1-Dichloroethane ND 6.4 " " " " " "
1,2-Dichloroethane ND 6.4 " " " " " "
1,1-Dichloroethene ND 6.4 " " " " " "
cis-1,2-Dichloroethene ND 6.4 " " " " " "
trans-1,2-Dichloroethene ND 6.4 " " " " " "
1,2-Dichloropropane ND 6.4 " " " " " "
1,3-Dichloropropane ND 6.4 " " " " " "
2,2-Dichloropropane ND 6.4 " " " " " "
1,1-Dichloropropene ND 6.4 " " " " " "
cis-1,3-Dichloropropene ND 6.4 " " " " " "
trans-1,3-Dichloropropene ND 6.4 " " " " " "
Ethylbenzene ND 6.4 " " " " " "
Hexachlorobutadiene ND 6.4 " " " " " "
Isopropylbenzene ND 6.4 " " " " " "

Page 86 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV16-5 (2107188-31) Soil Sampled: 07/13/21 13:54 Received: 07/13/21 17:07 p-Isopropyltoluene ND 6.4 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Methylene chloride ND 6.4 " " " " " "
Methyl tert-butyl ether ND 6.4 " " " " " "
Naphthalene ND 6.4 " " " " " "
n-Propylbenzene ND 6.4 " " " " " "
Styrene ND 6.4 " " " " " "
1,1,1,2-Tetrachloroethane ND 6.4 " " " " " "
1,1,2,2-Tetrachloroethane ND 6.4 " " " " " "
Tetrachloroethene ND 6.4 " " " " " "
Toluene ND 6.4 " " " " " "
1,2,3-Trichlorobenzene ND 6.4 " " " " " "
1,2,4-Trichlorobenzene ND 6.4 " " " " " "
1,1,1-Trichloroethane ND 6.4 " " " " " "
1,1,2-Trichloroethane ND 6.4 " " " " " "
Trichloroethene ND 6.4 " " " " " "
Trichlorofluoromethane ND 6.4 " " " " " "
1,2,3-Trichloropropane ND 6.4 " " " " " "
1,2,4-Trimethylbenzene ND 6.4 " " " " " "
1,3,5-Trimethylbenzene ND 6.4 " " " " " "
Vinyl chloride ND 6.4 " " " " " "
m,p-Xylene ND 6.4 " " " " " "
o-Xylene ND 6.4 " " " " " "
SV16-10 (2107188-32) Soil Sampled: 07/13/21 13:57 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 107 % 80-120 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Surrogate: Toluene-d8 104 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 95.3 % 74-121 " " " "
Benzene ND 6.7 " " " " " "
Bromobenzene ND 6.7 " " " " " "
Bromochloromethane ND 6.7 " " " " " "
Bromodichloromethane ND 6.7 " " " " " "
Bromoform ND 6.7 " " " " " "
Bromomethane ND 6.7 " " " " " "
n-Butylbenzene ND 6.7 " " " " " "
sec-Butylbenzene ND 6.7 " " " " " "
tert-Butylbenzene ND 6.7 " " " " " "
Carbon tetrachloride ND 6.7 " " " " " "
Chlorobenzene ND 6.7 " " " " " "
Chloroethane ND 6.7 " " " " " "
Chloroform ND 6.7 " " " " " "
Chloromethane ND 6.7 " " " " " "

Page 87 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV16-10 (2107188-32) Soil Sampled: 07/13/21 13:57 Received: 07/13/21 17:07 2-Chlorotoluene ND 6.7 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B 4-Chlorotoluene ND 6.7 " " " " " "
Dibromochloromethane ND 6.7 " " " " " "
1,2-Dibromo-3-chloropropane ND 6.7 " " " " " "
1,2-Dibromoethane (EDB) ND 6.7 " " " " " "
Dibromomethane ND 6.7 " " " " " "
1,2-Dichlorobenzene ND 6.7 " " " " " "
1,3-Dichlorobenzene ND 6.7 " " " " " "
1,4-Dichlorobenzene ND 6.7 " " " " " "
Dichlorodifluoromethane ND 6.7 " " " " " "
1,1-Dichloroethane ND 6.7 " " " " " "
1,2-Dichloroethane ND 6.7 " " " " " "
1,1-Dichloroethene ND 6.7 " " " " " "
cis-1,2-Dichloroethene ND 6.7 " " " " " "
trans-1,2-Dichloroethene ND 6.7 " " " " " "
1,2-Dichloropropane ND 6.7 " " " " " "
1,3-Dichloropropane ND 6.7 " " " " " "
2,2-Dichloropropane ND 6.7 " " " " " "
1,1-Dichloropropene ND 6.7 " " " " " "
cis-1,3-Dichloropropene ND 6.7 " " " " " "
trans-1,3-Dichloropropene ND 6.7 " " " " " "
Ethylbenzene ND 6.7 " " " " " "
Hexachlorobutadiene ND 6.7 " " " " " "
Isopropylbenzene ND 6.7 " " " " " "
p-Isopropyltoluene ND 6.7 " " " " " "
Methylene chloride ND 6.7 " " " " " "
Methyl tert-butyl ether ND 6.7 " " " " " "
Naphthalene ND 6.7 " " " " " "
n-Propylbenzene ND 6.7 " " " " " "
Styrene ND 6.7 " " " " " "
1,1,1,2-Tetrachloroethane ND 6.7 " " " " " "
1,1,2,2-Tetrachloroethane ND 6.7 " " " " " "
Tetrachloroethene ND 6.7 " " " " " "
Toluene ND 6.7 " " " " " "
1,2,3-Trichlorobenzene ND 6.7 " " " " " "
1,2,4-Trichlorobenzene ND 6.7 " " " " " "
1,1,1-Trichloroethane ND 6.7 " " " " " "
1,1,2-Trichloroethane ND 6.7 " " " " " "
Trichloroethene ND 6.7 " " " " " "
Trichlorofluoromethane ND 6.7 " " " " " "
1,2,3-Trichloropropane ND 6.7 " " " " " "

Page 88 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV16-10 (2107188-32) Soil Sampled: 07/13/21 13:57 Received: 07/13/21 17:07 1,2,4-Trimethylbenzene ND 6.7 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B 1,3,5-Trimethylbenzene ND 6.7 " " " " " "
Vinyl chloride ND 6.7 " " " " " "
m,p-Xylene ND 6.7 " " " " " "
o-Xylene ND 6.7 " " " " " "
SV16-15 (2107188-33) Soil Sampled: 07/13/21 14:00 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 111 % 80-120 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Surrogate: Toluene-d8 102 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 114 % 74-121 " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "
2-Chlorotoluene ND 5.0 " " " " " "
4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "

Page 89 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV16-15 (2107188-33) Soil Sampled: 07/13/21 14:00 Received: 07/13/21 17:07 2,2-Dichloropropane ND 5.0 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B 1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Naphthalene 14 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "

Page 90 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV17-5 (2107188-34) Soil Sampled: 07/13/21 14:44 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 119 % 80-120 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Surrogate: Toluene-d8 104 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 102 % 74-121 " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "
2-Chlorotoluene ND 5.0 " " " " " "
4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "

Page 91 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV17-5 (2107188-34) Soil Sampled: 07/13/21 14:44 Received: 07/13/21 17:07 p-Isopropyltoluene ND 5.0 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "
SV17-10 (2107188-35) Soil Sampled: 07/13/21 14:48 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 120 % 80-120 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Surrogate: Toluene-d8 106 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 103 % 74-121 " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "

Page 92 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV17-10 (2107188-35) Soil Sampled: 07/13/21 14:48 Received: 07/13/21 17:07 2-Chlorotoluene ND 5.0 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B 4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "

Page 93 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV17-10 (2107188-35) Soil Sampled: 07/13/21 14:48 Received: 07/13/21 17:07 1,2,4-Trimethylbenzene ND 5.0 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B 1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "
SV17-15 (2107188-36) Soil Sampled: 07/13/21 14:53 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 102 % 80-120 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Surrogate: Toluene-d8 106 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 102 % 74-121 " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "
2-Chlorotoluene ND 5.0 " " " " " "
4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "

Page 94 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV17-15 (2107188-36) Soil Sampled: 07/13/21 14:53 Received: 07/13/21 17:07 2,2-Dichloropropane ND 5.0 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B 1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "

Page 95 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV18-5 (2107188-37) Soil Sampled: 07/13/21 15:19 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 106 % 80-120 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Surrogate: Toluene-d8 102 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 103 % 74-121 " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "
2-Chlorotoluene ND 5.0 " " " " " "
4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "

Page 96 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV18-5 (2107188-37) Soil Sampled: 07/13/21 15:19 Received: 07/13/21 17:07 p-Isopropyltoluene ND 5.0 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "
SV18-10 (2107188-38) Soil Sampled: 07/13/21 15:25 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 116 % 80-120 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Surrogate: Toluene-d8 108 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 92.6 % 74-121 " " " "
Benzene 8.1 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene 5.2 5.0 " " " " " "
sec-Butylbenzene 35 5.0 " " " " " "
tert-Butylbenzene 5.0 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "

Page 97 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV18-10 (2107188-38) Soil Sampled: 07/13/21 15:25 Received: 07/13/21 17:07 2-Chlorotoluene ND 5.0 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B 4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene 23 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene 31 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Naphthalene 36 5.0 " " " " " "
n-Propylbenzene 35 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "

Page 98 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV18-10 (2107188-38) Soil Sampled: 07/13/21 15:25 Received: 07/13/21 17:07 1,2,4-Trimethylbenzene ND 5.0 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B 1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "
SV18-15 (2107188-39) Soil Sampled: 07/13/21 15:29 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 110 % 80-120 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Surrogate: Toluene-d8 103 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 102 % 74-121 " " " "
Benzene ND 4.4 " " " " " "
Bromobenzene ND 4.4 " " " " " "
Bromochloromethane ND 4.4 " " " " " "
Bromodichloromethane ND 4.4 " " " " " "
Bromoform ND 4.4 " " " " " "
Bromomethane ND 4.4 " " " " " "
n-Butylbenzene ND 4.4 " " " " " "
sec-Butylbenzene ND 4.4 " " " " " "
tert-Butylbenzene ND 4.4 " " " " " "
Carbon tetrachloride ND 4.4 " " " " " "
Chlorobenzene ND 4.4 " " " " " "
Chloroethane ND 4.4 " " " " " "
Chloroform ND 4.4 " " " " " "
Chloromethane ND 4.4 " " " " " "
2-Chlorotoluene ND 4.4 " " " " " "
4-Chlorotoluene ND 4.4 " " " " " "
Dibromochloromethane ND 4.4 " " " " " "
1,2-Dibromo-3-chloropropane ND 4.4 " " " " " "
1,2-Dibromoethane (EDB) ND 4.4 " " " " " "
Dibromomethane ND 4.4 " " " " " "
1,2-Dichlorobenzene ND 4.4 " " " " " "
1,3-Dichlorobenzene ND 4.4 " " " " " "
1,4-Dichlorobenzene ND 4.4 " " " " " "
Dichlorodifluoromethane ND 4.4 " " " " " "
1,1-Dichloroethane ND 4.4 " " " " " "
1,2-Dichloroethane ND 4.4 " " " " " "
1,1-Dichloroethene ND 4.4 " " " " " "
cis-1,2-Dichloroethene ND 4.4 " " " " " "
trans-1,2-Dichloroethene ND 4.4 " " " " " "
1,2-Dichloropropane ND 4.4 " " " " " "
1,3-Dichloropropane ND 4.4 " " " " " "

Page 99 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV18-15 (2107188-39) Soil Sampled: 07/13/21 15:29 Received: 07/13/21 17:07 2,2-Dichloropropane ND 4.4 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B 1,1-Dichloropropene ND 4.4 " " " " " "
cis-1,3-Dichloropropene ND 4.4 " " " " " "
trans-1,3-Dichloropropene ND 4.4 " " " " " "
Ethylbenzene ND 4.4 " " " " " "
Hexachlorobutadiene ND 4.4 " " " " " "
Isopropylbenzene ND 4.4 " " " " " "
p-Isopropyltoluene ND 4.4 " " " " " "
Methylene chloride ND 4.4 " " " " " "
Methyl tert-butyl ether ND 4.4 " " " " " "
Naphthalene ND 4.4 " " " " " "
n-Propylbenzene ND 4.4 " " " " " "
Styrene ND 4.4 " " " " " "
1,1,1,2-Tetrachloroethane ND 4.4 " " " " " "
1,1,2,2-Tetrachloroethane ND 4.4 " " " " " "
Tetrachloroethene ND 4.4 " " " " " "
Toluene ND 4.4 " " " " " "
1,2,3-Trichlorobenzene ND 4.4 " " " " " "
1,2,4-Trichlorobenzene ND 4.4 " " " " " "
1,1,1-Trichloroethane ND 4.4 " " " " " "
1,1,2-Trichloroethane ND 4.4 " " " " " "
Trichloroethene ND 4.4 " " " " " "
Trichlorofluoromethane ND 4.4 " " " " " "
1,2,3-Trichloropropane ND 4.4 " " " " " "
1,2,4-Trimethylbenzene ND 4.4 " " " " " "
1,3,5-Trimethylbenzene ND 4.4 " " " " " "
Vinyl chloride ND 4.4 " " " " " "
m,p-Xylene ND 4.4 " " " " " "
o-Xylene ND 4.4 " " " " " "

Page 100 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV19-5 (2107188-40) Soil Sampled: 07/13/21 15:49 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 100 % 80-120 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Surrogate: Toluene-d8 105 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 105 % 74-121 " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 5.0 " " " " " "
n-Butylbenzene 1000 500 " 100 " " " "
sec-Butylbenzene ND 5.0 " 1 " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 5.0 " " " " " "
2-Chlorotoluene ND 5.0 " " " " " "
4-Chlorotoluene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 5.0 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
Dichlorodifluoromethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene 3000 500 " 100 " " " "

Page 101 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV19-5 (2107188-40) Soil Sampled: 07/13/21 15:49 Received: 07/13/21 17:07 p-Isopropyltoluene ND 5.0 µg/kg 1 B1G1505 07/15/21 07/15/21 13:22 EPA 8260B Methylene chloride ND 5.0 " " " " " "
Methyl tert-butyl ether 1200 500 " 100 " " " "
Naphthalene 7700 500 " " " " " "
n-Propylbenzene 5700 500 " " " " " "
Styrene ND 5.0 " 1 " " " "
1,1,1,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2-Trichloroethane ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
Vinyl chloride ND 5.0 " " " " " "
m,p-Xylene ND 5.0 " " " " " "
o-Xylene ND 5.0 " " " " " "
SV19-10 (2107188-41) Soil Sampled: 07/13/21 15:54 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 104 % 80-120 B1G1507 07/16/21 07/19/21 13:35 EPA 8260B Surrogate: Toluene-d8 112 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 117 % 74-121 " " " "
Benzene ND 6.9 " " " " " "
Bromobenzene ND 6.9 " " " " " "
Bromochloromethane ND 6.9 " " " " " "
Bromodichloromethane ND 6.9 " " " " " "
Bromoform ND 6.9 " " " " " "
Bromomethane ND 6.9 " " " " " "
n-Butylbenzene ND 6.9 " " " " " "
sec-Butylbenzene 68 6.9 " " " " " "
tert-Butylbenzene 12 6.9 " " " " " "
Carbon tetrachloride ND 6.9 " " " " " "
Chlorobenzene ND 6.9 " " " " " "
Chloroethane ND 6.9 " " " " " "
Chloroform ND 6.9 " " " " " "
Chloromethane ND 6.9 " " " " " "

Page 102 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV19-10 (2107188-41) Soil Sampled: 07/13/21 15:54 Received: 07/13/21 17:07 2-Chlorotoluene ND 6.9 µg/kg 1 B1G1507 07/16/21 07/19/21 13:35 EPA 8260B 4-Chlorotoluene ND 6.9 " " " " " "
Dibromochloromethane ND 6.9 " " " " " "
1,2-Dibromo-3-chloropropane ND 6.9 " " " " " "
1,2-Dibromoethane (EDB) ND 6.9 " " " " " "
Dibromomethane ND 6.9 " " " " " "
1,2-Dichlorobenzene ND 6.9 " " " " " "
1,3-Dichlorobenzene ND 6.9 " " " " " "
1,4-Dichlorobenzene ND 6.9 " " " " " "
Dichlorodifluoromethane ND 6.9 " " " " " "
1,1-Dichloroethane ND 6.9 " " " " " "
1,2-Dichloroethane ND 6.9 " " " " " "
1,1-Dichloroethene ND 6.9 " " " " " "
cis-1,2-Dichloroethene ND 6.9 " " " " " "
trans-1,2-Dichloroethene ND 6.9 " " " " " "
1,2-Dichloropropane ND 6.9 " " " " " "
1,3-Dichloropropane ND 6.9 " " " " " "
2,2-Dichloropropane ND 6.9 " " " " " "
1,1-Dichloropropene ND 6.9 " " " " " "
cis-1,3-Dichloropropene ND 6.9 " " " " " "
trans-1,3-Dichloropropene ND 6.9 " " " " " "
Ethylbenzene ND 6.9 " " " " " "
Hexachlorobutadiene ND 6.9 " " " " " "
Isopropylbenzene 1000 690 " 100 " " " "
p-Isopropyltoluene ND 6.9 " 1 " " " "
Methylene chloride ND 6.9 " " " " " "
Methyl tert-butyl ether 14000 690 " 100 " " " "
Naphthalene ND 690 " " " " " "
n-Propylbenzene 1600 690 " " " " " "
Styrene ND 6.9 " 1 " " " "
1,1,1,2-Tetrachloroethane ND 6.9 " " " " " "
1,1,2,2-Tetrachloroethane ND 6.9 " " " " " "
Tetrachloroethene ND 6.9 " " " " " "
Toluene ND 6.9 " " " " " "
1,2,3-Trichlorobenzene ND 6.9 " " " " " "
1,2,4-Trichlorobenzene ND 6.9 " " " " " "
1,1,1-Trichloroethane ND 6.9 " " " " " "
1,1,2-Trichloroethane ND 6.9 " " " " " "
Trichloroethene ND 6.9 " " " " " "
Trichlorofluoromethane ND 6.9 " " " " " "
1,2,3-Trichloropropane ND 6.9 " " " " " "

Page 103 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV19-10 (2107188-41) Soil Sampled: 07/13/21 15:54 Received: 07/13/21 17:07 1,2,4-Trimethylbenzene ND 6.9 µg/kg 1 B1G1507 07/16/21 07/19/21 13:35 EPA 8260B 1,3,5-Trimethylbenzene ND 6.9 " " " " " "
Vinyl chloride ND 6.9 " " " " " "
m,p-Xylene 7.5 6.9 " " " " " "
o-Xylene ND 6.9 " " " " " "
SV19-15 (2107188-42) Soil Sampled: 07/13/21 15:59 Received: 07/13/21 17:07 Surrogate: Dibromofluoromethane 105 % 80-120 B1G1507 07/16/21 07/19/21 13:35 EPA 8260B Surrogate: Toluene-d8 109 % 81-117 " " " "
Surrogate: 4-Bromofluorobenzene 95.8 % 74-121 " " " "
Benzene ND 500 " 100 " " " "
Bromobenzene ND 500 " " " " " "
Bromochloromethane ND 500 " " " " " "
Bromodichloromethane ND 500 " " " " " "
Bromoform ND 500 " " " " " "
Bromomethane ND 500 " " " " " "
n-Butylbenzene 1700 500 " " " " " "
sec-Butylbenzene ND 500 " " " " " "
tert-Butylbenzene ND 500 " " " " " "
Carbon tetrachloride ND 500 " " " " " "
Chlorobenzene ND 500 " " " " " "
Chloroethane ND 500 " " " " " "
Chloroform ND 500 " " " " " "
Chloromethane ND 500 " " " " " "
2-Chlorotoluene ND 500 " " " " " "
4-Chlorotoluene ND 500 " " " " " "
Dibromochloromethane ND 500 " " " " " "
1,2-Dibromo-3-chloropropane ND 500 " " " " " "
1,2-Dibromoethane (EDB) ND 500 " " " " " "
Dibromomethane ND 500 " " " " " "
1,2-Dichlorobenzene ND 500 " " " " " "
1,3-Dichlorobenzene ND 500 " " " " " "
1,4-Dichlorobenzene ND 500 " " " " " "
Dichlorodifluoromethane ND 500 " " " " " "
1,1-Dichloroethane ND 500 " " " " " "
1,2-Dichloroethane ND 500 " " " " " "
1,1-Dichloroethene ND 500 " " " " " "
cis-1,2-Dichloroethene ND 500 " " " " " "
trans-1,2-Dichloroethene ND 500 " " " " " "
1,2-Dichloropropane ND 500 " " " " " "
1,3-Dichloropropane ND 500 " " " " " "

Page 104 of 220 ends

The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. 26052 MERIT CIRCLE SUITE 104, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Project:

Project Number:

Project Manager:

Reported:

Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/22/21 13:51
Town Center Northwest
Volatile Organic Compounds by EPA Method 8260B
Sierra Analytical Labs, Inc.

Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SV19-15 (2107188-42) Soil Sampled: 07/13/21 15:59 Received: 07/13/21 17:07 2,2-Dichloropropane ND 500 µg/kg 100 B1G1507 07/16/21 07/19/21 13:35 EPA 8260B 1,1-Dichloropropene ND 500 " " " " " "
cis-1,3-Dichloropropene ND 500 " " " " " "
trans-1,3-Dichloropropene ND 500 " " " " " "
Ethylbenzene ND 500 " " " " " "
Hexachlorobutadiene ND 500 " " " " " "
Isopropylbenzene 1700 500 " " " " " "
p-Isopropyltoluene ND 500 " " " " " "
Methylene chloride ND 500 " " " " " "
Methyl tert-butyl ether 12000 500 " " " " " "
Naphthalene 13000 500 " " " " " "
n-Propylbenzene 4100 500 " " " " " "
Styrene ND 500 " " " " " "
1,1,1,2-Tetrachloroethane ND 500 " " " " " "
1,1,2,2-Tetrachloroethane ND 500 " " " " " "
Tetrachloroethene ND 500 " " " " " "
Toluene ND 500 " " " " " "
1,2,3-Trichlorobenzene ND 500 " " " " " "
1,2,4-Trichlorobenzene ND 500 " " " " " "
1,1,1-Trichloroethane ND 500 " " " " " "
1,1,2-Trichloroethane ND 500 " " " " " "
Trichloroethene ND 500 " " " " " "
Trichlorofluoromethane ND 500 " " " " " "
1,2,3-Trichloropropane ND 500 " " " " " "
1,2,4-Trimethylbenzene ND 500 " " " " " "
1,3,5-Trimethylbenzene ND 500 " " " " " "
Vinyl chloride ND 500 " " " " " "
m,p-Xylene ND 500 " " " " " "
o-Xylene ND 500 " " " " " "

Page 105 of 220 ends
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