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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Metals by EPA 6000/7000 Series Methods - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1413 - EPA 3050B
Matrix Spike Dup (B1G1413-MSD1) Source: 2107188-41 Prepared: 07/14/21 Analyzed: 07/19/21 Antimony 65.3 8.0 mg/kg 99.8 ND 65.4 60-140 12.3 20
Selenium 86.7 6.9 " 99.8 ND 86.9 70-130 4.56 20
Vanadium 103 5.1 " 99.8 22.6 80.7 70-130 6.68 20
Barium 172 6.0 " 99.8 65.7 107 70-130 7.03 20
Zinc 129 7.0 " 99.8 34.9 94.2 70-130 6.12 20
Arsenic 82.3 5.5 " 99.8 ND 82.5 70-130 13.1 20
Lead 79.1 7.1 " 99.8 4.09 75.2 70-130 12.4 30
Thallium 81.9 17 " 99.8 ND 82.0 70-130 9.75 20
Beryllium 77.9 2.2 " 99.8 ND 78.1 70-130 6.48 20
Cobalt 94.9 3.3 " 99.8 7.33 87.8 70-130 6.63 20
Chromium 100 2.3 " 99.8 17.0 83.3 70-130 6.76 20
Nickel 87.8 3.0 " 99.8 11.6 76.4 70-130 13.6 20
Cadmium 91.8 2.5 " 99.8 ND 92.0 70-130 6.88 20
Copper 110 5.0 " 99.8 12.2 97.9 70-130 11.7 30
Silver 104 2.0 " 99.8 ND 105 60-140 3.66 40
Molybdenum 95.4 5.2 " 99.8 0.725 94.8 70-130 13.1 20
Batch B1G1414 - EPA 7471A
Blank (B1G1414-BLK1) Prepared: 07/14/21 Analyzed: 07/16/21 Mercury ND 0.90 mg/kg
LCS (B1G1414-BS1) Prepared: 07/14/21 Analyzed: 07/16/21 Mercury 0.12 0.90 mg/kg 0.167 70.5 70-130
Matrix Spike (B1G1414-MS1) Source: 2107188-01 Prepared: 07/14/21 Analyzed: 07/16/21 Mercury 0.16 0.90 mg/kg 0.163 ND 100 70-130
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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Metals by EPA 6000/7000 Series Methods - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1414 - EPA 7471A
Matrix Spike Dup (B1G1414-MSD1) Source: 2107188-01 Prepared: 07/14/21 Analyzed: 07/16/21 Mercury 0.16 0.90 mg/kg 0.162 ND 99.9 70-130 0.871 30
Batch B1G1415 - EPA 7471A
Blank (B1G1415-BLK1) Prepared: 07/14/21 Analyzed: 07/16/21 Mercury ND 0.90 mg/kg
LCS (B1G1415-BS1) Prepared: 07/14/21 Analyzed: 07/16/21 Mercury 0.12 0.90 mg/kg 0.167 70.6 70-130
Matrix Spike (B1G1415-MS1) Source: 2107188-21 Prepared: 07/14/21 Analyzed: 07/16/21 Mercury 0.16 0.90 mg/kg 0.161 ND 101 70-130
Matrix Spike Dup (B1G1415-MSD1) Source: 2107188-21 Prepared: 07/14/21 Analyzed: 07/16/21 Mercury 0.16 0.90 mg/kg 0.158 ND 100 70-130 1.79 30
Batch B1G1416 - EPA 7471A
Blank (B1G1416-BLK1) Prepared: 07/14/21 Analyzed: 07/16/21 Mercury ND 0.90 mg/kg
LCS (B1G1416-BS1) Prepared: 07/14/21 Analyzed: 07/16/21 Mercury 0.12 0.90 mg/kg 0.167 70.7 70-130
Matrix Spike (B1G1416-MS1) Source: 2107188-41 Prepared: 07/14/21 Analyzed: 07/16/21 Mercury 0.20 0.90 mg/kg 0.161 ND 124 70-130
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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Metals by EPA 6000/7000 Series Methods - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1416 - EPA 7471A
Matrix Spike Dup (B1G1416-MSD1) Source: 2107188-41 Prepared: 07/14/21 Analyzed: 07/16/21 Mercury 0.19 0.90 mg/kg 0.158 ND 122 70-130 4.05 30
Batch B1G1417 - EPA 3060A
Blank (B1G1417-BLK1) Prepared: 07/14/21 Analyzed: 07/19/21 Hexavalent Chromium ND 0.10 mg/kg
LCS (B1G1417-BS1) Prepared: 07/14/21 Analyzed: 07/19/21 Hexavalent Chromium 0.161 0.10 mg/kg 0.150 107 80-120
Matrix Spike (B1G1417-MS1) Source: 2107188-01 Prepared: 07/14/21 Analyzed: 07/19/21 Hexavalent Chromium 0.200 0.10 mg/kg 0.149 0.0624 92.3 75-125 Matrix Spike Dup (B1G1417-MSD1) Source: 2107188-01 Prepared: 07/14/21 Analyzed: 07/19/21 Hexavalent Chromium 0.199 0.10 mg/kg 0.149 0.0624 91.4 75-125 0.823 20 Batch B1G1418 - EPA 3060A
Blank (B1G1418-BLK1) Prepared: 07/14/21 Analyzed: 07/19/21 Hexavalent Chromium ND 0.10 mg/kg
LCS (B1G1418-BS1) Prepared: 07/14/21 Analyzed: 07/19/21 Hexavalent Chromium 0.152 0.10 mg/kg 0.150 101 80-120
Matrix Spike (B1G1418-MS1) Source: 2107188-21 Prepared: 07/14/21 Analyzed: 07/19/21 Hexavalent Chromium 0.149 0.10 mg/kg 0.149 ND 99.9 75-125
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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Metals by EPA 6000/7000 Series Methods - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1418 - EPA 3060A
Matrix Spike Dup (B1G1418-MSD1) Source: 2107188-21 Prepared: 07/14/21 Analyzed: 07/19/21 Hexavalent Chromium 0.142 0.10 mg/kg 0.149 ND 95.6 75-125 4.53 20 Batch B1G1419 - EPA 3060A
Blank (B1G1419-BLK1) Prepared: 07/14/21 Analyzed: 07/19/21 Hexavalent Chromium ND 0.10 mg/kg
LCS (B1G1419-BS1) Prepared: 07/14/21 Analyzed: 07/19/21 Hexavalent Chromium 0.144 0.10 mg/kg 0.150 96.2 80-120
Matrix Spike (B1G1419-MS1) Source: 2107188-41 Prepared: 07/14/21 Analyzed: 07/19/21 Hexavalent Chromium 0.146 0.10 mg/kg 0.145 0.0341 77.2 75-125 Matrix Spike Dup (B1G1419-MSD1) Source: 2107188-41 Prepared: 07/14/21 Analyzed: 07/19/21 Hexavalent Chromium 0.145 0.10 mg/kg 0.145 0.0341 76.9 75-125 0.525 20
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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Total Petroleum Hydrocarbons Carbon Range Analysis by GC-FID - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1502 - EPA 5035 P & T
Blank (B1G1502-BLK1) Prepared & Analyzed: 07/15/21
Total Petroleum Hydrocarbons (C4-C12) ND 0.050 mg/kg
LCS (B1G1502-BS1) Prepared & Analyzed: 07/15/21
Gasoline Range Hydrocarbons (C4-C12) 0.570 0.050 mg/kg 0.600 95.0 80-120 Matrix Spike (B1G1502-MS1) Source: 2107188-01 Prepared & Analyzed: 07/15/21 Gasoline Range Hydrocarbons (C4-C12) 0.455 0.050 mg/kg 0.600 ND 75.8 50-150 Matrix Spike Dup (B1G1502-MSD1) Source: 2107188-01 Prepared & Analyzed: 07/15/21 Gasoline Range Hydrocarbons (C4-C12) 0.480 0.050 mg/kg 0.600 ND 80.0 50-150 5.35 30 Batch B1G1503 - EPA 5035 P & T
Blank (B1G1503-BLK1) Prepared & Analyzed: 07/15/21
Total Petroleum Hydrocarbons (C4-C12) ND 0.050 mg/kg
LCS (B1G1503-BS1) Prepared & Analyzed: 07/15/21
Gasoline Range Hydrocarbons (C4-C12) 0.531 0.050 mg/kg 0.600 88.5 80-120 Matrix Spike (B1G1503-MS1) Source: 2107204-01 Prepared & Analyzed: 07/15/21 Gasoline Range Hydrocarbons (C4-C12) 0.466 0.050 mg/kg 0.600 ND 77.7 50-150 Matrix Spike Dup (B1G1503-MSD1) Source: 2107204-01 Prepared & Analyzed: 07/15/21 Gasoline Range Hydrocarbons (C4-C12) 0.371 0.050 mg/kg 0.600 ND 61.8 50-150 22.7 30 Batch B1G1504 - EPA 3550B Solid Ext
Blank (B1G1504-BLK1) Prepared & Analyzed: 07/15/21
Total Petroleum Hydrocarbons (C13-C22) ND 5.0 mg/kg
Total Petroleum Hydrocarbons (C23-C40) ND 5.0 "
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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Total Petroleum Hydrocarbons Carbon Range Analysis by GC-FID - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1504 - EPA 3550B Solid Ext
LCS (B1G1504-BS1) Prepared & Analyzed: 07/15/21
Diesel Range Organics (C10-C24) 18.1 5.0 mg/kg 20.0 90.7 80-120 Matrix Spike (B1G1504-MS1) Source: 2107188-01 Prepared & Analyzed: 07/15/21 Diesel Range Organics (C10-C24) 19.6 5.0 mg/kg 20.0 ND 98.1 50-150 Matrix Spike Dup (B1G1504-MSD1) Source: 2107188-01 Prepared & Analyzed: 07/15/21 Diesel Range Organics (C10-C24) 20.2 5.0 mg/kg 20.0 ND 101 50-150 2.77 30 Batch B1G1601 - EPA 3550B Solid Ext
Blank (B1G1601-BLK1) Prepared: 07/15/21 Analyzed: 07/16/21 Total Petroleum Hydrocarbons (C13-C22) ND 5.0 mg/kg
Total Petroleum Hydrocarbons (C23-C40) ND 5.0 "
LCS (B1G1601-BS1) Prepared: 07/15/21 Analyzed: 07/16/21 Diesel Range Organics (C10-C24) 16.3 5.0 mg/kg 20.0 81.5 80-120 Matrix Spike (B1G1601-MS1) Source: 2107204-01 Prepared: 07/15/21 Analyzed: 07/16/21 Diesel Range Organics (C10-C24) 19.7 5.0 mg/kg 20.0 ND 98.6 50-150 Matrix Spike Dup (B1G1601-MSD1) Source: 2107204-01 Prepared: 07/15/21 Analyzed: 07/16/21 Diesel Range Organics (C10-C24) 22.5 5.0 mg/kg 20.0 ND 112 50-150 13.1 30 Batch B1G1602 - EPA 3550B Solid Ext
Blank (B1G1602-BLK1) Prepared: 07/15/21 Analyzed: 07/16/21 Total Petroleum Hydrocarbons (C13-C22) ND 5.0 mg/kg
Total Petroleum Hydrocarbons (C23-C40) ND 5.0 "
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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Total Petroleum Hydrocarbons Carbon Range Analysis by GC-FID - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1602 - EPA 3550B Solid Ext
LCS (B1G1602-BS1) Prepared: 07/15/21 Analyzed: 07/16/21 Diesel Range Organics (C10-C24) 16.9 5.0 mg/kg 20.0 84.7 80-120 Matrix Spike (B1G1602-MS1) Source: 2107188-23 Prepared: 07/15/21 Analyzed: 07/16/21 Diesel Range Organics (C10-C24) 16.0 5.0 mg/kg 20.0 ND 79.8 50-150 Matrix Spike Dup (B1G1602-MSD1) Source: 2107188-23 Prepared: 07/15/21 Analyzed: 07/16/21 Diesel Range Organics (C10-C24) 18.3 5.0 mg/kg 20.0 ND 91.4 50-150 13.6 30 Batch B1G1913 - EPA 5035 P & T
Blank (B1G1913-BLK1) Prepared: 07/19/21 Analyzed: 07/20/21 Total Petroleum Hydrocarbons (C4-C12) ND 0.050 mg/kg
LCS (B1G1913-BS1) Prepared: 07/19/21 Analyzed: 07/20/21 Gasoline Range Hydrocarbons (C4-C12) 0.697 0.050 mg/kg 0.600 116 80-120 Matrix Spike (B1G1913-MS1) Source: 2107188-23 Prepared: 07/19/21 Analyzed: 07/20/21 Gasoline Range Hydrocarbons (C4-C12) 0.570 0.050 mg/kg 0.600 ND 95.0 50-150 Matrix Spike Dup (B1G1913-MSD1) Source: 2107188-23 Prepared: 07/19/21 Analyzed: 07/20/21 Gasoline Range Hydrocarbons (C4-C12) 0.456 0.050 mg/kg 0.600 ND 76.0 50-150 22.2 30
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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Volatile Organic Compounds by EPA Method 8260B - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1407 - EPA 5035 P & T
Blank (B1G1407-BLK1) Prepared: 07/14/21 Analyzed: 07/15/21 Benzene ND 5.0 µg/kg
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 "
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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Volatile Organic Compounds by EPA Method 8260B - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1407 - EPA 5035 P & T
Blank (B1G1407-BLK1) Prepared: 07/14/21 Analyzed: 07/15/21 Isopropylbenzene ND 5.0 µg/kg
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 "
LCS (B1G1407-BS1) Prepared: 07/14/21 Analyzed: 07/15/21 Benzene 50.3 5.0 µg/kg 50.0 101 80-120
Chlorobenzene 40.1 5.0 " 50.0 80.2 80-120
1,1-Dichloroethene 49.0 5.0 " 50.0 98.0 80-120
Toluene 42.3 5.0 " 50.0 84.7 80-120
Trichloroethene 50.2 5.0 " 50.0 100 80-120
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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Volatile Organic Compounds by EPA Method 8260B - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1407 - EPA 5035 P & T
Matrix Spike (B1G1407-MS1) Source: 2107188-01 Prepared: 07/14/21 Analyzed: 07/15/21 Benzene 49.1 5.0 µg/kg 50.0 ND 98.2 37-151
Chlorobenzene 38.2 5.0 " 50.0 ND 76.4 37-160
1,1-Dichloroethene 48.0 5.0 " 50.0 ND 96.0 50-150
Toluene 40.2 5.0 " 50.0 ND 80.3 47-150
Trichloroethene 48.1 5.0 " 50.0 ND 96.2 71-157
Matrix Spike Dup (B1G1407-MSD1) Source: 2107188-01 Prepared: 07/14/21 Analyzed: 07/15/21 Benzene 47.4 5.0 µg/kg 50.0 ND 94.8 37-151 3.56 30
Chlorobenzene 36.9 5.0 " 50.0 ND 73.9 37-160 3.33 30
1,1-Dichloroethene 44.6 5.0 " 50.0 ND 89.2 50-150 7.37 30 Toluene 37.8 5.0 " 50.0 ND 75.5 47-150 6.14 30
Trichloroethene 46.2 5.0 " 50.0 ND 92.5 71-157 3.92 30
Batch B1G1505 - EPA 5035 P & T
Blank (B1G1505-BLK1) Prepared & Analyzed: 07/15/21
Benzene ND 5.0 µg/kg
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 "
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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Volatile Organic Compounds by EPA Method 8260B - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1505 - EPA 5035 P & T
Blank (B1G1505-BLK1) Prepared & Analyzed: 07/15/21
1,4-Dichlorobenzene ND 5.0 µg/kg
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 "
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 "
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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Volatile Organic Compounds by EPA Method 8260B - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1505 - EPA 5035 P & T
Blank (B1G1505-BLK1) Prepared & Analyzed: 07/15/21
o-Xylene ND 5.0 µg/kg
LCS (B1G1505-BS1) Prepared & Analyzed: 07/15/21
Benzene 48.1 5.0 µg/kg 50.0 96.2 80-120
Chlorobenzene 47.1 5.0 " 50.0 94.2 80-120
1,1-Dichloroethene 45.5 5.0 " 50.0 90.9 80-120
Toluene 40.0 5.0 " 50.0 80.0 80-120
Trichloroethene 54.0 5.0 " 50.0 108 80-120
Matrix Spike (B1G1505-MS1) Source: 2107188-21 Prepared & Analyzed: 07/15/21 Benzene 47.2 5.0 µg/kg 50.0 ND 94.5 37-151
Chlorobenzene 41.2 5.0 " 50.0 ND 82.3 37-160
1,1-Dichloroethene 42.9 5.0 " 50.0 ND 85.8 50-150
Toluene 43.1 5.0 " 50.0 ND 86.3 47-150
Trichloroethene 55.4 5.0 " 50.0 ND 111 71-157
Matrix Spike Dup (B1G1505-MSD1) Source: 2107188-21 Prepared & Analyzed: 07/15/21 Benzene 48.8 5.0 µg/kg 50.0 ND 97.6 37-151 3.23 30
Chlorobenzene 41.6 5.0 " 50.0 ND 83.2 37-160 1.04 30
1,1-Dichloroethene 44.7 5.0 " 50.0 ND 89.4 50-150 4.13 30 Toluene 45.5 5.0 " 50.0 ND 90.9 47-150 5.26 30
Trichloroethene 56.1 5.0 " 50.0 ND 112 71-157 1.18 30
Batch B1G1507 - EPA 5035 P & T
Blank (B1G1507-BLK1) Prepared: 07/16/21 Analyzed: 07/19/21 Benzene ND 5.0 µg/kg
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 "
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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Volatile Organic Compounds by EPA Method 8260B - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1507 - EPA 5035 P & T
Blank (B1G1507-BLK1) Prepared: 07/16/21 Analyzed: 07/19/21 Chloromethane ND 5.0 µg/kg
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 "
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 "
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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Volatile Organic Compounds by EPA Method 8260B - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1507 - EPA 5035 P & T
Blank (B1G1507-BLK1) Prepared: 07/16/21 Analyzed: 07/19/21 1,1,1-Trichloroethane ND 5.0 µg/kg
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 "
LCS (B1G1507-BS1) Prepared: 07/16/21 Analyzed: 07/19/21 Benzene 48.2 5.0 µg/kg 50.0 96.4 80-120
Chlorobenzene 47.1 5.0 " 50.0 94.2 80-120
1,1-Dichloroethene 44.3 5.0 " 50.0 88.6 80-120
Toluene 42.8 5.0 " 50.0 85.7 80-120
Trichloroethene 50.8 5.0 " 50.0 102 80-120
Matrix Spike (B1G1507-MS1) Source: 2107118-05 Prepared: 07/16/21 Analyzed: 07/19/21 Benzene 40.2 5.0 µg/kg 50.0 ND 80.4 37-151
Chlorobenzene 34.2 5.0 " 50.0 ND 68.4 37-160
1,1-Dichloroethene 36.1 5.0 " 50.0 ND 72.3 50-150
Toluene 36.4 5.0 " 50.0 ND 72.7 47-150
Trichloroethene 43.2 5.0 " 50.0 ND 86.5 71-157
Matrix Spike Dup (B1G1507-MSD1) Source: 2107118-05 Prepared: 07/16/21 Analyzed: 07/19/21 Benzene 44.9 5.0 µg/kg 50.0 ND 89.8 37-151 11.0 30
Chlorobenzene 37.3 5.0 " 50.0 ND 74.6 37-160 8.73 30
1,1-Dichloroethene 39.1 5.0 " 50.0 ND 78.1 50-150 7.79 30 Toluene 39.4 5.0 " 50.0 ND 78.9 47-150 8.12 30
Trichloroethene 48.5 5.0 " 50.0 ND 97.0 71-157 11.4 30
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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Semivolatile Organic Compounds by EPA Method 8270C - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1603 - EPA 3550B Solid Ext
Blank (B1G1603-BLK1) Prepared: 07/15/21 Analyzed: 07/16/21 Acenaphthene ND 0.33 mg/kg
Acenaphthylene ND 0.33 "
Anthracene ND 0.33 "
Benzidine ND 0.33 "
Benzo (a) anthracene ND 0.33 "
Benzo (b) fluoranthene ND 0.33 "
Benzo (k) fluoranthene ND 0.33 "
Benzo (a) pyrene ND 0.33 "
Benzo (g,h,i) perylene ND 0.33 "
Benzyl alcohol ND 0.33 "
Bis(2-chloroethyl)ether ND 0.33 "
Bis(2-chloroethoxy)methane ND 0.33 "
Bis(2-ethylhexyl)phthalate ND 0.33 "
Bis(2-chloroisopropyl)ether ND 0.33 "
4-Bromophenyl phenyl ether ND 0.33 "
Butyl benzyl phthalate ND 0.33 "
4-Chloroaniline ND 0.33 "
2-Chlorophenol ND 0.33 "
4-Chloro-3-methylphenol ND 0.33 "
2-Chloronaphthalene ND 0.33 "
4-Chlorophenyl phenyl ether ND 0.33 "
Chrysene ND 0.33 "
Dibenz (a,h) anthracene ND 0.33 "
Dibenzofuran ND 0.33 "
1,3-Dichlorobenzene ND 0.33 "
1,2-Dichlorobenzene ND 0.33 "
1,4-Dichlorobenzene ND 0.33 "
3,3´-Dichlorobenzidine ND 0.33 "
2,4-Dichlorophenol ND 0.33 "
Diethyl phthalate ND 0.33 "
2,4-Dimethylphenol ND 0.33 "
Dimethyl phthalate ND 0.33 "
Di-n-butyl phthalate ND 0.33 "
2,4-Dinitrophenol ND 0.33 "
4,6-Dinitro-2-methylphenol ND 0.33 "
2,4-Dinitrotoluene ND 0.33 "
2,6-Dinitrotoluene ND 0.33 "
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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Semivolatile Organic Compounds by EPA Method 8270C - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1603 - EPA 3550B Solid Ext
Blank (B1G1603-BLK1) Prepared: 07/15/21 Analyzed: 07/16/21 Di-n-octyl phthalate ND 0.33 mg/kg
1,2-Diphenylhydrazine ND 0.33 "
Fluoranthene ND 0.33 "
Fluorene ND 0.33 "
Hexachlorobenzene ND 0.33 "
Hexachlorobutadiene ND 0.33 "
Hexachlorocyclopentadiene ND 0.33 "
Hexachloroethane ND 0.33 "
Indeno (1,2,3-cd) pyrene ND 0.33 "
Isophorone ND 0.33 "
2-Methylnaphthalene ND 0.33 "
2-Methylphenol ND 0.33 "
4-Methylphenol ND 0.33 "
Naphthalene ND 0.33 "
2-Nitroaniline ND 0.33 "
3-Nitroaniline ND 0.33 "
4-Nitroaniline ND 0.33 "
Nitrobenzene ND 0.33 "
2-Nitrophenol ND 0.33 "
4-Nitrophenol ND 0.33 "
N-Nitrosodimethylamine ND 0.33 "
Diphenylamine ND 0.33 "
N-Nitrosodi-n-propylamine ND 0.33 "
Pentachlorophenol ND 0.33 "
Phenanthrene ND 0.33 "
Phenol ND 0.33 "
Pyrene ND 0.33 "
1,2,4-Trichlorobenzene ND 0.33 "
2,4,5-Trichlorophenol ND 0.33 "
2,4,6-Trichlorophenol ND 0.33 "
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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Semivolatile Organic Compounds by EPA Method 8270C - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1603 - EPA 3550B Solid Ext
LCS (B1G1603-BS1) Prepared: 07/15/21 Analyzed: 07/16/21 Acenaphthene 0.843 0.33 mg/kg 1.00 84.3 47-145
2-Chlorophenol 2.07 0.33 " 2.00 104 23-134
4-Chloro-3-methylphenol 1.94 0.33 " 2.00 96.8 22-147
1,4-Dichlorobenzene 0.791 0.33 " 1.00 79.1 20-124
2,4-Dinitrotoluene 0.496 0.33 " 1.00 49.6 39-139
4-Nitrophenol 0.636 0.33 " 2.00 31.8 0-132
N-Nitrosodi-n-propylamine 0.683 0.33 " 1.00 68.3 0-230
Pentachlorophenol 0.446 0.33 " 2.00 22.3 14-176
Phenol 1.73 0.33 " 2.00 86.4 5-112
Pyrene 0.831 0.33 " 1.00 83.1 52-115
1,2,4-Trichlorobenzene 0.729 0.33 " 1.00 72.9 44-142
Matrix Spike (B1G1603-MS1) Source: 2107188-01 Prepared: 07/15/21 Analyzed: 07/16/21 Acenaphthene 0.909 0.33 mg/kg 1.00 ND 90.9 47-145
2-Chlorophenol 1.84 0.33 " 2.00 ND 91.8 23-134
4-Chloro-3-methylphenol 1.65 0.33 " 2.00 ND 82.6 22-147 1,4-Dichlorobenzene 0.894 0.33 " 1.00 ND 89.4 20-124
2,4-Dinitrotoluene 0.537 0.33 " 1.00 ND 53.7 39-139
4-Nitrophenol 0.655 0.33 " 2.00 ND 32.8 0-132
N-Nitrosodi-n-propylamine 0.881 0.33 " 1.00 ND 88.1 0-230 Pentachlorophenol 0.351 0.33 " 2.00 ND 17.6 14-176
Phenol 1.59 0.33 " 2.00 ND 79.5 5-112
Pyrene 0.953 0.33 " 1.00 ND 95.3 52-115
1,2,4-Trichlorobenzene 0.820 0.33 " 1.00 ND 82.0 44-142 Matrix Spike Dup (B1G1603-MSD1) Source: 2107188-01 Prepared: 07/15/21 Analyzed: 07/16/21 Acenaphthene 1.03 0.33 mg/kg 1.00 ND 103 47-145 12.8 30 2-Chlorophenol 1.90 0.33 " 2.00 ND 95.0 23-134 3.37 30
4-Chloro-3-methylphenol 1.90 0.33 " 2.00 ND 94.8 22-147 13.7 30 1,4-Dichlorobenzene 0.981 0.33 " 1.00 ND 98.1 20-124 9.28 30 2,4-Dinitrotoluene 0.527 0.33 " 1.00 ND 52.7 39-139 1.88 30 4-Nitrophenol 0.642 0.33 " 2.00 ND 32.1 0-132 2.00 30
N-Nitrosodi-n-propylamine 0.938 0.33 " 1.00 ND 93.8 0-230 6.27 30 Pentachlorophenol 0.414 0.33 " 2.00 ND 20.7 14-176 16.5 30 Phenol 1.84 0.33 " 2.00 ND 92.1 5-112 14.7 30
Pyrene 0.846 0.33 " 1.00 ND 84.6 52-115 11.9 30
1,2,4-Trichlorobenzene 0.708 0.33 " 1.00 ND 70.8 44-142 14.7 30
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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Semivolatile Organic Compounds by EPA Method 8270C - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1916 - EPA 3550B Solid Ext
Blank (B1G1916-BLK1) Prepared: 07/19/21 Analyzed: 07/20/21 Acenaphthene ND 0.33 mg/kg
Acenaphthylene ND 0.33 "
Anthracene ND 0.33 "
Benzidine ND 0.33 "
Benzo (a) anthracene ND 0.33 "
Benzo (b) fluoranthene ND 0.33 "
Benzo (k) fluoranthene ND 0.33 "
Benzo (a) pyrene ND 0.33 "
Benzo (g,h,i) perylene ND 0.33 "
Benzyl alcohol ND 0.33 "
Bis(2-chloroethyl)ether ND 0.33 "
Bis(2-chloroethoxy)methane ND 0.33 "
Bis(2-ethylhexyl)phthalate ND 0.33 "
Bis(2-chloroisopropyl)ether ND 0.33 "
4-Bromophenyl phenyl ether ND 0.33 "
Butyl benzyl phthalate ND 0.33 "
4-Chloroaniline ND 0.33 "
2-Chlorophenol ND 0.33 "
4-Chloro-3-methylphenol ND 0.33 "
2-Chloronaphthalene ND 0.33 "
4-Chlorophenyl phenyl ether ND 0.33 "
Chrysene ND 0.33 "
Dibenz (a,h) anthracene ND 0.33 "
Dibenzofuran ND 0.33 "
1,3-Dichlorobenzene ND 0.33 "
1,2-Dichlorobenzene ND 0.33 "
1,4-Dichlorobenzene ND 0.33 "
3,3´-Dichlorobenzidine ND 0.33 "
2,4-Dichlorophenol ND 0.33 "
Diethyl phthalate ND 0.33 "
2,4-Dimethylphenol ND 0.33 "
Dimethyl phthalate ND 0.33 "
Di-n-butyl phthalate ND 0.33 "
2,4-Dinitrophenol ND 0.33 "
4,6-Dinitro-2-methylphenol ND 0.33 "
2,4-Dinitrotoluene ND 0.33 "
2,6-Dinitrotoluene ND 0.33 "
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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Semivolatile Organic Compounds by EPA Method 8270C - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1916 - EPA 3550B Solid Ext
Blank (B1G1916-BLK1) Prepared: 07/19/21 Analyzed: 07/20/21 Di-n-octyl phthalate ND 0.33 mg/kg
1,2-Diphenylhydrazine ND 0.33 "
Fluoranthene ND 0.33 "
Fluorene ND 0.33 "
Hexachlorobenzene ND 0.33 "
Hexachlorobutadiene ND 0.33 "
Hexachlorocyclopentadiene ND 0.33 "
Hexachloroethane ND 0.33 "
Indeno (1,2,3-cd) pyrene ND 0.33 "
Isophorone ND 0.33 "
2-Methylnaphthalene ND 0.33 "
2-Methylphenol ND 0.33 "
4-Methylphenol ND 0.33 "
Naphthalene ND 0.33 "
2-Nitroaniline ND 0.33 "
3-Nitroaniline ND 0.33 "
4-Nitroaniline ND 0.33 "
Nitrobenzene ND 0.33 "
2-Nitrophenol ND 0.33 "
4-Nitrophenol ND 0.33 "
N-Nitrosodimethylamine ND 0.33 "
Diphenylamine ND 0.33 "
N-Nitrosodi-n-propylamine ND 0.33 "
Pentachlorophenol ND 0.33 "
Phenanthrene ND 0.33 "
Phenol ND 0.33 "
Pyrene ND 0.33 "
1,2,4-Trichlorobenzene ND 0.33 "
2,4,5-Trichlorophenol ND 0.33 "
2,4,6-Trichlorophenol ND 0.33 "
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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Semivolatile Organic Compounds by EPA Method 8270C - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1916 - EPA 3550B Solid Ext
Blank (B1G1916-BLK2) Prepared: 07/19/21 Analyzed: 07/20/21 Acenaphthene ND 0.33 mg/kg
Acenaphthylene ND 0.33 "
Anthracene ND 0.33 "
Benzidine ND 0.33 "
Benzo (a) anthracene ND 0.33 "
Benzo (b) fluoranthene ND 0.33 "
Benzo (k) fluoranthene ND 0.33 "
Benzo (a) pyrene ND 0.33 "
Benzo (g,h,i) perylene ND 0.33 "
Benzyl alcohol ND 0.33 "
Bis(2-chloroethyl)ether ND 0.33 "
Bis(2-chloroethoxy)methane ND 0.33 "
Bis(2-ethylhexyl)phthalate ND 0.33 "
Bis(2-chloroisopropyl)ether ND 0.33 "
4-Bromophenyl phenyl ether ND 0.33 "
Butyl benzyl phthalate ND 0.33 "
4-Chloroaniline ND 0.33 "
2-Chlorophenol ND 0.33 "
4-Chloro-3-methylphenol ND 0.33 "
2-Chloronaphthalene ND 0.33 "
4-Chlorophenyl phenyl ether ND 0.33 "
Chrysene ND 0.33 "
Dibenz (a,h) anthracene ND 0.33 "
Dibenzofuran ND 0.33 "
1,3-Dichlorobenzene ND 0.33 "
1,2-Dichlorobenzene ND 0.33 "
1,4-Dichlorobenzene ND 0.33 "
3,3´-Dichlorobenzidine ND 0.33 "
2,4-Dichlorophenol ND 0.33 "
Diethyl phthalate ND 0.33 "
2,4-Dimethylphenol ND 0.33 "
Dimethyl phthalate ND 0.33 "
Di-n-butyl phthalate ND 0.33 "
2,4-Dinitrophenol ND 0.33 "
4,6-Dinitro-2-methylphenol ND 0.33 "
2,4-Dinitrotoluene ND 0.33 "
2,6-Dinitrotoluene ND 0.33 "
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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Semivolatile Organic Compounds by EPA Method 8270C - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1916 - EPA 3550B Solid Ext
Blank (B1G1916-BLK2) Prepared: 07/19/21 Analyzed: 07/20/21 Di-n-octyl phthalate ND 0.33 mg/kg
1,2-Diphenylhydrazine ND 0.33 "
Fluoranthene ND 0.33 "
Fluorene ND 0.33 "
Hexachlorobenzene ND 0.33 "
Hexachlorobutadiene ND 0.33 "
Hexachlorocyclopentadiene ND 0.33 "
Hexachloroethane ND 0.33 "
Indeno (1,2,3-cd) pyrene ND 0.33 "
Isophorone ND 0.33 "
2-Methylnaphthalene ND 0.33 "
2-Methylphenol ND 0.33 "
4-Methylphenol ND 0.33 "
Naphthalene ND 0.33 "
2-Nitroaniline ND 0.33 "
3-Nitroaniline ND 0.33 "
4-Nitroaniline ND 0.33 "
Nitrobenzene ND 0.33 "
2-Nitrophenol ND 0.33 "
4-Nitrophenol ND 0.33 "
N-Nitrosodimethylamine ND 0.33 "
Diphenylamine ND 0.33 "
N-Nitrosodi-n-propylamine ND 0.33 "
Pentachlorophenol ND 0.33 "
Phenanthrene ND 0.33 "
Phenol ND 0.33 "
Pyrene ND 0.33 "
1,2,4-Trichlorobenzene ND 0.33 "
2,4,5-Trichlorophenol ND 0.33 "
2,4,6-Trichlorophenol ND 0.33 "
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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Semivolatile Organic Compounds by EPA Method 8270C - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1916 - EPA 3550B Solid Ext
LCS (B1G1916-BS1) Prepared: 07/19/21 Analyzed: 07/20/21 Acenaphthene 0.848 0.33 mg/kg 1.00 84.8 47-145
2-Chlorophenol 1.85 0.33 " 2.00 92.3 23-134
4-Chloro-3-methylphenol 1.96 0.33 " 2.00 98.2 22-147
1,4-Dichlorobenzene 0.815 0.33 " 1.00 81.5 20-124
2,4-Dinitrotoluene 0.479 0.33 " 1.00 47.9 39-139
4-Nitrophenol 0.664 0.33 " 2.00 33.2 0-132
N-Nitrosodi-n-propylamine 0.797 0.33 " 1.00 79.7 0-230
Pentachlorophenol 0.379 0.33 " 2.00 19.0 14-176
Phenol 1.78 0.33 " 2.00 89.0 5-112
Pyrene 0.709 0.33 " 1.00 70.9 52-115
1,2,4-Trichlorobenzene 0.729 0.33 " 1.00 72.9 44-142
LCS (B1G1916-BS2) Prepared: 07/19/21 Analyzed: 07/20/21 Acenaphthene 0.844 0.33 mg/kg 1.00 84.4 47-145
2-Chlorophenol 1.81 0.33 " 2.00 90.6 23-134
4-Chloro-3-methylphenol 2.16 0.33 " 2.00 108 22-147
1,4-Dichlorobenzene 0.796 0.33 " 1.00 79.6 20-124
2,4-Dinitrotoluene 0.523 0.33 " 1.00 52.3 39-139
4-Nitrophenol 0.642 0.33 " 2.00 32.1 0-132
N-Nitrosodi-n-propylamine 0.711 0.33 " 1.00 71.1 0-230
Pentachlorophenol 0.351 0.33 " 2.00 17.6 14-176
Phenol 1.65 0.33 " 2.00 82.6 5-112
Pyrene 0.694 0.33 " 1.00 69.4 52-115
1,2,4-Trichlorobenzene 0.615 0.33 " 1.00 61.5 44-142
Matrix Spike (B1G1916-MS1) Source: 2107188-19 Prepared: 07/19/21 Analyzed: 07/20/21 Acenaphthene 0.919 0.33 mg/kg 1.00 ND 91.9 47-145
2-Chlorophenol 1.82 0.33 " 2.00 ND 91.2 23-134
4-Chloro-3-methylphenol 1.84 0.33 " 2.00 ND 91.9 22-147 1,4-Dichlorobenzene 0.880 0.33 " 1.00 ND 88.0 20-124
2,4-Dinitrotoluene 0.899 0.33 " 1.00 ND 89.9 39-139
4-Nitrophenol 0.634 0.33 " 2.00 ND 31.7 0-132
N-Nitrosodi-n-propylamine 0.834 0.33 " 1.00 ND 83.4 0-230 Pentachlorophenol 0.413 0.33 " 2.00 ND 20.6 14-176
Phenol 1.68 0.33 " 2.00 ND 84.2 5-112
Pyrene 0.866 0.33 " 1.00 ND 86.6 52-115
1,2,4-Trichlorobenzene 0.810 0.33 " 1.00 ND 81.0 44-142
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
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Semivolatile Organic Compounds by EPA Method 8270C - Quality Control Sierra Analytical Labs, Inc.
Batch B1G1916 - EPA 3550B Solid Ext
Matrix Spike (B1G1916-MS2) Source: 2107188-30 Prepared: 07/19/21 Analyzed: 07/20/21 Acenaphthene 0.919 0.33 mg/kg 1.00 ND 91.9 47-145
2-Chlorophenol 1.82 0.33 " 2.00 ND 91.2 23-134
4-Chloro-3-methylphenol 1.84 0.33 " 2.00 ND 91.9 22-147 1,4-Dichlorobenzene 0.880 0.33 " 1.00 ND 88.0 20-124
2,4-Dinitrotoluene 0.544 0.33 " 1.00 ND 54.4 39-139
4-Nitrophenol 0.634 0.33 " 2.00 ND 31.7 0-132
N-Nitrosodi-n-propylamine 0.834 0.33 " 1.00 ND 83.4 0-230 Pentachlorophenol 0.413 0.33 " 2.00 ND 20.6 14-176
Phenol 1.68 0.33 " 2.00 ND 84.2 5-112
Pyrene 0.866 0.33 " 1.00 ND 86.6 52-115
1,2,4-Trichlorobenzene 0.810 0.33 " 1.00 ND 81.0 44-142 Matrix Spike Dup (B1G1916-MSD1) Source: 2107188-19 Prepared: 07/19/21 Analyzed: 07/20/21 Acenaphthene 0.968 0.33 mg/kg 1.00 ND 96.8 47-145 5.19 30 2-Chlorophenol 1.85 0.33 " 2.00 ND 92.3 23-134 1.25 30
4-Chloro-3-methylphenol 2.06 0.33 " 2.00 ND 103 22-147 11.2 30 1,4-Dichlorobenzene 0.923 0.33 " 1.00 ND 92.3 20-124 4.77 30 2,4-Dinitrotoluene 0.920 0.33 " 1.00 ND 92.0 39-139 2.31 30 4-Nitrophenol 0.629 0.33 " 2.00 ND 31.4 0-132 0.792 30
N-Nitrosodi-n-propylamine 0.847 0.33 " 1.00 ND 84.7 0-230 1.55 30 Pentachlorophenol 0.458 0.33 " 2.00 ND 22.9 14-176 10.3 30 Phenol 1.67 0.33 " 2.00 ND 83.4 5-112 0.955 30
Pyrene 0.995 0.33 " 1.00 ND 99.5 52-115 13.9 30
1,2,4-Trichlorobenzene 0.710 0.33 " 1.00 ND 71.0 44-142 13.2 30 Matrix Spike Dup (B1G1916-MSD2) Source: 2107188-30 Prepared: 07/19/21 Analyzed: 07/20/21 Acenaphthene 1.00 0.33 mg/kg 1.00 ND 100 47-145 8.44 30 2-Chlorophenol 1.92 0.33 " 2.00 ND 96.0 23-134 5.13 30
4-Chloro-3-methylphenol 1.99 0.33 " 2.00 ND 99.4 22-147 7.79 30 1,4-Dichlorobenzene 0.920 0.33 " 1.00 ND 92.0 20-124 4.44 30 2,4-Dinitrotoluene 0.594 0.33 " 1.00 ND 59.4 39-139 8.79 30 4-Nitrophenol 0.650 0.33 " 2.00 ND 32.5 0-132 2.49 30
N-Nitrosodi-n-propylamine 0.899 0.33 " 1.00 ND 89.9 0-230 7.50 30 Pentachlorophenol 0.489 0.33 " 2.00 ND 24.4 14-176 16.9 30 Phenol 1.72 0.33 " 2.00 ND 86.2 5-112 2.35 30
Pyrene 0.679 0.33 " 1.00 ND 67.9 52-115 24.2 30
1,2,4-Trichlorobenzene 0.723 0.33 " 1.00 ND 72.3 44-142 11.4 30
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
Notes and Definitions
S-07 Surrogate recovery outside of control limits due to coelution with high levels of petroleum hydrocarbons.
S-03 Surrogate diluted out.
QM-07 The spike recovery was outside acceptance limits for the MS and/or MSD. The batch was accepted based on acceptable LCS recovery.
Sample results reported on a dry weight basis
RPD Relative Percent Difference
dry
NR Not Reported
ND Analyte NOT DETECTED at or above the reporting limit DET Analyte DETECTED
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
APPENDIX B
Sierra Analytical Labs
Background Soil Matrix Data
April 4, 2005 and July 6, 2021
Project:
Project Number:
Project Manager:
Reported:
Mearns Consulting Corporation
738 Ashland Avenue Las Brisas
Santa Monica CA, 90405 Susan Mearns 04/12/05 14:01
City of Signal Hill
Metals by EPA 6000/7000 Series Methods
Sierra Analytical Labs, Inc.
Analyte Limit Result
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
Offsite-1 (0504072-33) Soil Sampled: 04/04/05 13:20 Received: 04/04/05 14:15 Silver ND 0.80 mg/kg B5D0709 1 04/07/05 04/11/05 EPA 6010B Arsenic 5.2 1.7 "" "" " "
Barium 97 3.3 "" "" " "
Beryllium ND 0.75 "" " "" "
Cadmium ND 0.51 "" " "" "
Cobalt 8.1 2.2 "" "" " "
Chromium 21 0.98 "" "" " "
Copper 25 2.2 "" "" " "
Mercury ND 0.16 " " B5D0711 04/07/05 04/08/05 EPA 7471A Molybdenum ND 1.7 " B5D0709 " 04/07/05 04/11/05 EPA 6010B Nickel 12 0.79 "" "" " "
Lead 12 1.3 "" "" " "
Antimony ND 1.6 "" " "" "
Selenium ND 1.9 "" " "" "
Thallium ND 1.5 "" " "" "
Vanadium 35 0.73 "" "" " "
Zinc 62 1.3 "" "" " "
Offsite-5 (0504072-34) Soil Sampled: 04/04/05 13:25 Received: 04/04/05 14:15 Silver ND 0.80 mg/kg B5D0709 1 04/07/05 04/11/05 EPA 6010B Arsenic 12 1.7 "" "" " "
Barium 160 3.3 "" "" " "
Beryllium 1.1 0.75 "" "" " "
Cadmium ND 0.51 "" " "" "
Cobalt 17 2.2 "" "" " "
Chromium 50 0.98 "" "" " "
Copper 64 2.2 "" "" " "
Mercury ND 0.18 " " B5D0711 04/07/05 04/08/05 EPA 7471A Molybdenum ND 1.7 " B5D0709 " 04/07/05 04/11/05 EPA 6010B Nickel 30 0.79 "" "" " "
Lead 8.1 1.3 "" "" " "
Antimony 2.3 1.6 "" "" " "
Selenium ND 1.9 "" " "" "
Thallium ND 1.5 "" " "" "
Vanadium 75 0.73 "" "" " "
Zinc 99 1.3 "" "" " "
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 105, 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 Corporation
738 Ashland Avenue Las Brisas
Santa Monica CA, 90405 Susan Mearns 04/12/05 14:01
City of Signal Hill
Metals by EPA 6000/7000 Series Methods
Sierra Analytical Labs, Inc.
Analyte Limit Result
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
Offsite-10 (0504072-35) Soil Sampled: 04/04/05 13:29 Received: 04/04/05 14:15 Silver ND 0.80 mg/kg B5D0709 1 04/07/05 04/11/05 EPA 6010B Arsenic 12 1.7 "" "" " "
Barium 170 3.3 "" "" " "
Beryllium ND 0.75 "" " "" "
Cadmium ND 0.51 "" " "" "
Cobalt 14 2.2 "" "" " "
Chromium 32 0.98 "" "" " "
Copper 35 2.2 "" "" " "
Mercury ND 0.18 " " B5D0711 04/07/05 04/08/05 EPA 7471A Molybdenum ND 1.7 " B5D0709 " 04/07/05 04/11/05 EPA 6010B Nickel 22 0.79 "" "" " "
Lead 5.6 1.3 "" "" " "
Antimony ND 1.6 "" " "" "
Selenium ND 1.9 "" " "" "
Thallium ND 1.5 "" " "" "
Vanadium 58 0.73 "" "" " "
Zinc 67 1.3 "" "" " "
Offsite-20 (0504072-36) Soil Sampled: 04/04/05 13:36 Received: 04/04/05 14:15 Silver ND 0.80 mg/kg B5D0709 1 04/07/05 04/11/05 EPA 6010B Arsenic 14 1.7 "" "" " "
Barium 73 3.3 "" "" " "
Beryllium 0.95 0.75 "" "" " "
Cadmium ND 0.51 "" " "" "
Cobalt 17 2.2 "" "" " "
Chromium 35 0.98 "" "" " "
Copper 80 2.2 "" "" " "
Mercury ND 0.15 " " B5D0711 04/07/05 04/08/05 EPA 7471A Molybdenum ND 1.7 " B5D0709 " 04/07/05 04/11/05 EPA 6010B Nickel 22 0.79 "" "" " "
Lead 10 1.3 "" "" " "
Antimony ND 1.6 "" " "" "
Selenium ND 1.9 "" " "" "
Thallium ND 1.5 "" " "" "
Vanadium 67 0.73 "" "" " "
Zinc 95 1.3 "" "" " "
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 105, LAGUNA HILLS, CALIFORNIA 92653 TELEPHONE: (949) 348-9389 FAX: (949) 348-9115
E-MAIL: SIERRALABS @ SIERRALABS.NET
Mearns Consulting LLC
RE:1905 E 21st St. - Spud Field
Santa Monica, CA 90405
738 Ashland Avenue
Susan Mearns
Attached are the results of the analyses for samples received by the laboratory on 07/06/21 14:35.
The samples were received by Sierra Analytical Labs, Inc. with a chain of custody record attached or completed at the submittal of the samples.
The analyses were performed according to the prescribed method as outlined by EPA, Standard Methods, and A.S.T.M.
The remaining portions of the samples will be disposed of within 30 days from the date of this report.
If you require any additional retaining time, please advise us.
Sincerely,
13 July 2021
Richard K. Forsyth
Laboratory Director
Work Order No.: 2107058
Sierra Analytical Labs, Inc. is certified by the California Department of Health Services (DOHS), Environmental Laboratory Accredidation Program (ELAP) No. 2320.
Project:
Project Number:
Project Manager:
Reported:
Mearns Consulting LLC
738 Ashland Avenue [none]
Santa Monica CA, 90405 Susan Mearns 07/13/21 12:23
1905 E 21st St. - Spud Field
Sample ID Laboratory ID Matrix Date Sampled
ANALYTICAL REPORT FOR SAMPLES
Date Received
SB1-5 2107058-01 Soil 07/06/21 07:40 07/06/21 14:35
SB2-5 2107058-02 Soil 07/06/21 07:51 07/06/21 14:35
SB3-5 2107058-03 Soil 07/06/21 08:01 07/06/21 14:35
SB4-5 2107058-04 Soil 07/06/21 08:08 07/06/21 14:35
SB5-5 2107058-05 Soil 07/06/21 08:16 07/06/21 14:35
SB6-5 2107058-06 Soil 07/06/21 08:23 07/06/21 14:35
SB7-5 2107058-07 Soil 07/06/21 08:31 07/06/21 14:35
SB8-5 2107058-08 Soil 07/06/21 08:38 07/06/21 14:35
SB9-5 2107058-09 Soil 07/06/21 08:47 07/06/21 14:35
SB10-5 2107058-10 Soil 07/06/21 08:58 07/06/21 14:35
SB11-5 2107058-11 Soil 07/06/21 09:10 07/06/21 14:35
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 07/13/21 12:23
1905 E 21st St. - Spud Field
Metals by EPA 6000/7000 Series Methods
Sierra Analytical Labs, Inc.
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SB1-5 (2107058-01) Soil Sampled: 07/06/21 07:40 Received: 07/06/21 14:35 Silver ND 2.0 mg/kg 1 B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 84 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 11 3.3 " " " " " "
Chromium 36 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G0711 07/07/21 07/09/21 12:47 EPA 7199A Copper 40 5.0 " " B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Mercury ND 0.90 " " B1G0613 07/06/21 07/06/21 20:35 EPA 7471A Molybdenum ND 5.2 " " B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Nickel 21 3.0 " " " " " "
Lead 8.8 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 46 5.1 " " " " " "
Zinc 54 7.0 " " " " " "
SB2-5 (2107058-02) Soil Sampled: 07/06/21 07:51 Received: 07/06/21 14:35 Silver ND 2.0 mg/kg 1 B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 69 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 9.3 3.3 " " " " " "
Chromium 21 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G0711 07/07/21 07/09/21 12:47 EPA 7199A Copper 26 5.0 " " B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Mercury ND 0.90 " " B1G0613 07/06/21 07/06/21 20:35 EPA 7471A Molybdenum ND 5.2 " " B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Nickel 15 3.0 " " " " " "
Lead ND 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 36 5.1 " " " " " "
Zinc 39 7.0 " " " " " "
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 07/13/21 12:23
1905 E 21st St. - Spud Field
Metals by EPA 6000/7000 Series Methods
Sierra Analytical Labs, Inc.
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SB3-5 (2107058-03) Soil Sampled: 07/06/21 08:01 Received: 07/06/21 14:35 Silver ND 2.0 mg/kg 1 B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 48 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 4.6 3.3 " " " " " "
Chromium 9.0 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G0711 07/07/21 07/09/21 12:47 EPA 7199A Copper 16 5.0 " " B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Mercury ND 0.90 " " B1G0613 07/06/21 07/06/21 20:35 EPA 7471A Molybdenum ND 5.2 " " B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Nickel 6.2 3.0 " " " " " "
Lead ND 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 16 5.1 " " " " " "
Zinc 29 7.0 " " " " " "
SB4-5 (2107058-04) Soil Sampled: 07/06/21 08:08 Received: 07/06/21 14:35 Silver ND 2.0 mg/kg 1 B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 170 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 14 3.3 " " " " " "
Chromium 42 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G0711 07/07/21 07/09/21 12:47 EPA 7199A Copper 45 5.0 " " B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Mercury ND 0.90 " " B1G0613 07/06/21 07/06/21 20:35 EPA 7471A Molybdenum ND 5.2 " " B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Nickel 26 3.0 " " " " " "
Lead 9.5 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 58 5.1 " " " " " "
Zinc 74 7.0 " " " " " "
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 07/13/21 12:23
1905 E 21st St. - Spud Field
Metals by EPA 6000/7000 Series Methods
Sierra Analytical Labs, Inc.
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SB5-5 (2107058-05) Soil Sampled: 07/06/21 08:16 Received: 07/06/21 14:35 Silver ND 2.0 mg/kg 1 B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 97 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 16 3.3 " " " " " "
Chromium 30 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G0711 07/07/21 07/09/21 12:47 EPA 7199A Copper 40 5.0 " " B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Mercury ND 0.90 " " B1G0613 07/06/21 07/06/21 20:35 EPA 7471A Molybdenum ND 5.2 " " B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Nickel 27 3.0 " " " " " "
Lead 8.5 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 52 5.1 " " " " " "
Zinc 56 7.0 " " " " " "
SB6-5 (2107058-06) Soil Sampled: 07/06/21 08:23 Received: 07/06/21 14:35 Silver ND 2.0 mg/kg 1 B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 130 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 22 3.3 " " " " " "
Chromium 42 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G0711 07/07/21 07/09/21 12:47 EPA 7199A Copper 46 5.0 " " B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Mercury ND 0.90 " " B1G0613 07/06/21 07/06/21 20:35 EPA 7471A Molybdenum ND 5.2 " " B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Nickel 33 3.0 " " " " " "
Lead 11 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 71 5.1 " " " " " "
Zinc 85 7.0 " " " " " "
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 07/13/21 12:23
1905 E 21st St. - Spud Field
Metals by EPA 6000/7000 Series Methods
Sierra Analytical Labs, Inc.
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SB7-5 (2107058-07) Soil Sampled: 07/06/21 08:31 Received: 07/06/21 14:35 Silver ND 2.0 mg/kg 1 B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 80 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 12 3.3 " " " " " "
Chromium 24 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G0711 07/07/21 07/09/21 12:47 EPA 7199A Copper 26 5.0 " " B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Mercury ND 0.90 " " B1G0613 07/06/21 07/06/21 20:35 EPA 7471A Molybdenum ND 5.2 " " B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Nickel 19 3.0 " " " " " "
Lead ND 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 43 5.1 " " " " " "
Zinc 47 7.0 " " " " " "
SB8-5 (2107058-08) Soil Sampled: 07/06/21 08:38 Received: 07/06/21 14:35 Silver ND 2.0 mg/kg 1 B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 180 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 17 3.3 " " " " " "
Chromium 38 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G0711 07/07/21 07/09/21 12:47 EPA 7199A Copper 37 5.0 " " B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Mercury ND 0.90 " " B1G0613 07/06/21 07/06/21 20:35 EPA 7471A Molybdenum ND 5.2 " " B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Nickel 32 3.0 " " " " " "
Lead 11 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 68 5.1 " " " " " "
Zinc 51 7.0 " " " " " "
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 07/13/21 12:23
1905 E 21st St. - Spud Field
Metals by EPA 6000/7000 Series Methods
Sierra Analytical Labs, Inc.
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SB9-5 (2107058-09) Soil Sampled: 07/06/21 08:47 Received: 07/06/21 14:35 Silver ND 2.0 mg/kg 1 B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 87 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 14 3.3 " " " " " "
Chromium 30 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G0711 07/07/21 07/09/21 12:47 EPA 7199A Copper 28 5.0 " " B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Mercury ND 0.90 " " B1G0613 07/06/21 07/06/21 20:35 EPA 7471A Molybdenum ND 5.2 " " B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Nickel 24 3.0 " " " " " "
Lead 9.0 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 54 5.1 " " " " " "
Zinc 38 7.0 " " " " " "
SB10-5 (2107058-10) Soil Sampled: 07/06/21 08:58 Received: 07/06/21 14:35 Silver ND 2.0 mg/kg 1 B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 98 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 13 3.3 " " " " " "
Chromium 27 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G0711 07/07/21 07/09/21 12:47 EPA 7199A Copper 30 5.0 " " B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Mercury ND 0.90 " " B1G0613 07/06/21 07/06/21 20:35 EPA 7471A Molybdenum ND 5.2 " " B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Nickel 23 3.0 " " " " " "
Lead 7.5 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 51 5.1 " " " " " "
Zinc 39 7.0 " " " " " "
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 07/13/21 12:23
1905 E 21st St. - Spud Field
Metals by EPA 6000/7000 Series Methods
Sierra Analytical Labs, Inc.
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
SB11-5 (2107058-11) Soil Sampled: 07/06/21 09:10 Received: 07/06/21 14:35 Silver ND 2.0 mg/kg 1 B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Arsenic ND 5.5 " " " " " "
Barium 120 6.0 " " " " " "
Beryllium ND 2.2 " " " " " "
Cadmium ND 2.5 " " " " " "
Cobalt 9.8 3.3 " " " " " "
Chromium 22 2.3 " " " " " "
Hexavalent Chromium ND 0.10 " " B1G0711 07/07/21 07/09/21 12:47 EPA 7199A Copper 14 5.0 " " B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Mercury ND 0.90 " " B1G0613 07/06/21 07/06/21 20:35 EPA 7471A Molybdenum ND 5.2 " " B1G0611 07/06/21 07/07/21 13:55 EPA 6010B Nickel 16 3.0 " " " " " "
Lead ND 7.1 " " " " " "
Antimony ND 8.0 " " " " " "
Selenium ND 6.9 " " " " " "
Thallium ND 17 " " " " " "
Vanadium 39 5.1 " " " " " "
Zinc 31 7.0 " " " " " "
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 07/13/21 12:23
1905 E 21st St. - Spud Field
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Metals by EPA 6000/7000 Series Methods - Quality Control Sierra Analytical Labs, Inc.
Batch B1G0611 - EPA 3050B
Blank (B1G0611-BLK1) Prepared: 07/06/21 Analyzed: 07/07/21 Antimony ND 8.0 mg/kg
Selenium ND 6.9 "
Cadmium ND 2.5 "
Vanadium ND 5.1 "
Chromium ND 2.3 "
Cobalt ND 3.3 "
Zinc ND 7.0 "
Thallium ND 17 "
Copper ND 5.0 "
Barium ND 6.0 "
Lead ND 7.1 "
Arsenic ND 5.5 "
Molybdenum ND 5.2 "
Nickel ND 3.0 "
Silver ND 2.0 "
Beryllium ND 2.2 "
LCS (B1G0611-BS1) Prepared: 07/06/21 Analyzed: 07/07/21 Copper 107 5.0 mg/kg 100 107 78-122
Lead 112 7.1 " 100 112 80-120
Antimony 103 8.0 " 100 103 75-125
Chromium 111 2.3 " 100 111 80-120
Selenium 105 6.9 " 100 105 76-124
Cobalt 119 3.3 " 100 119 80-120
Beryllium 107 2.2 " 100 107 80-120
Silver 106 2.0 " 100 106 60-140
Arsenic 105 5.5 " 100 105 78-122
Barium 112 6.0 " 100 112 80-120
Zinc 110 7.0 " 100 110 80-120
Nickel 119 3.0 " 100 119 80-120
Vanadium 107 5.1 " 100 107 80-120
Cadmium 103 2.5 " 100 103 80-120
Molybdenum 108 5.2 " 100 108 80-120
Thallium 114 17 " 100 114 80-120
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 07/13/21 12:23
1905 E 21st St. - Spud Field
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Metals by EPA 6000/7000 Series Methods - Quality Control Sierra Analytical Labs, Inc.
Batch B1G0611 - EPA 3050B
LCS Dup (B1G0611-BSD1) Prepared: 07/06/21 Analyzed: 07/07/21 Beryllium 105 2.2 mg/kg 100 105 80-120 1.49 20
Chromium 106 2.3 " 100 106 80-120 4.14 20
Cadmium 97.5 2.5 " 100 97.5 80-120 5.78 20
Copper 112 5.0 " 100 112 78-122 4.64 20
Arsenic 101 5.5 " 100 101 78-122 3.70 20
Cobalt 116 3.3 " 100 116 80-120 2.58 20
Silver 108 2.0 " 100 108 60-140 1.96 40
Molybdenum 105 5.2 " 100 105 80-120 3.50 20
Barium 109 6.0 " 100 109 80-120 2.55 20
Vanadium 105 5.1 " 100 105 80-120 1.32 20
Selenium 100 6.9 " 100 100 76-124 4.29 20
Antimony 112 8.0 " 100 112 75-125 8.57 20
Nickel 115 3.0 " 100 115 80-120 3.21 20
Lead 115 7.1 " 100 115 80-120 3.08 20
Thallium 107 17 " 100 107 80-120 6.02 20
Zinc 109 7.0 " 100 109 80-120 1.23 20
Matrix Spike (B1G0611-MS1) Source: 2107028-01 Prepared: 07/06/21 Analyzed: 07/07/21 Vanadium 126 5.1 mg/kg 96.8 32.6 96.9 70-130
Barium 192 6.0 " 96.8 83.1 113 70-130
Cobalt 102 3.3 " 96.8 7.94 97.4 70-130
Molybdenum 82.1 5.2 " 96.8 0.635 84.2 70-130
Cadmium 84.1 2.5 " 96.8 1.03 85.8 70-130
Zinc 132 7.0 " 96.8 46.6 88.5 70-130
Arsenic 86.3 5.5 " 96.8 ND 89.2 70-130
Selenium 86.0 6.9 " 96.8 1.66 87.2 70-130
Silver 99.9 2.0 " 96.8 0.269 103 60-140
Beryllium 88.1 2.2 " 96.8 0.220 91.1 70-130
Antimony 94.6 8.0 " 96.8 5.77 91.8 60-140
Chromium 109 2.3 " 96.8 17.4 94.5 70-130
Nickel 110 3.0 " 96.8 15.2 97.7 70-130
Thallium 85.0 17 " 96.8 ND 87.8 70-130
Lead 129 7.1 " 96.8 22.8 109 70-130
Copper 135 5.0 " 96.8 25.5 113 70-130
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 07/13/21 12:23
1905 E 21st St. - Spud Field
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Metals by EPA 6000/7000 Series Methods - Quality Control Sierra Analytical Labs, Inc.
Batch B1G0611 - EPA 3050B
Matrix Spike Dup (B1G0611-MSD1) Source: 2107028-01 Prepared: 07/06/21 Analyzed: 07/07/21 Barium 193 6.0 mg/kg 96.7 83.1 114 70-130 0.455 20
Molybdenum 82.3 5.2 " 96.7 0.635 84.4 70-130 0.168 20
Silver 98.4 2.0 " 96.7 0.269 101 60-140 1.49 40
Arsenic 87.1 5.5 " 96.7 ND 90.0 70-130 0.880 20
Zinc 148 7.0 " 96.7 46.6 105 70-130 11.0 20
Nickel 107 3.0 " 96.7 15.2 95.2 70-130 2.37 20
Cobalt 103 3.3 " 96.7 7.94 98.1 70-130 0.588 20
Copper 136 5.0 " 96.7 25.5 115 70-130 1.31 30
Beryllium 87.0 2.2 " 96.7 0.220 90.0 70-130 1.31 20
Thallium 85.1 17 " 96.7 ND 88.0 70-130 0.102 20
Lead 127 7.1 " 96.7 22.8 108 70-130 1.16 30
Chromium 110 2.3 " 96.7 17.4 95.8 70-130 1.07 20
Cadmium 86.2 2.5 " 96.7 1.03 88.1 70-130 2.52 20
Vanadium 124 5.1 " 96.7 32.6 94.2 70-130 2.17 20
Antimony 91.9 8.0 " 96.7 5.77 89.1 60-140 2.90 20
Selenium 87.0 6.9 " 96.7 1.66 88.3 70-130 1.16 20
Batch B1G0613 - EPA 7471A
Blank (B1G0613-BLK1) Prepared & Analyzed: 07/06/21
Mercury ND 0.90 mg/kg
LCS (B1G0613-BS1) Prepared & Analyzed: 07/06/21
Mercury 0.20 0.90 mg/kg 0.167 118 70-130
Matrix Spike (B1G0613-MS1) Source: 2107028-01 Prepared & Analyzed: 07/06/21 Mercury 0.24 0.90 mg/kg 0.163 0.09 90.8 70-130
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 07/13/21 12:23
1905 E 21st St. - Spud Field
Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Metals by EPA 6000/7000 Series Methods - Quality Control Sierra Analytical Labs, Inc.
Batch B1G0613 - EPA 7471A
Matrix Spike Dup (B1G0613-MSD1) Source: 2107028-01 Prepared & Analyzed: 07/06/21 Mercury 0.24 0.90 mg/kg 0.162 0.09 89.1 70-130 1.57 30
Batch B1G0711 - EPA 3060A
Blank (B1G0711-BLK1) Prepared: 07/07/21 Analyzed: 07/09/21 Hexavalent Chromium ND 0.10 mg/kg
LCS (B1G0711-BS1) Prepared: 07/07/21 Analyzed: 07/09/21 Hexavalent Chromium 0.158 0.10 mg/kg 0.150 105 80-120
Matrix Spike (B1G0711-MS1) Source: 2107058-01 Prepared: 07/07/21 Analyzed: 07/09/21 Hexavalent Chromium 0.175 0.10 mg/kg 0.149 0.0273 99.1 75-125 Matrix Spike Dup (B1G0711-MSD1) Source: 2107058-01 Prepared: 07/07/21 Analyzed: 07/09/21 Hexavalent Chromium 0.183 0.10 mg/kg 0.150 0.0273 104 75-125 4.44 20
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 07/13/21 12:23
1905 E 21st St. - Spud Field
Notes and Definitions
Sample results reported on a dry weight basis
RPD Relative Percent Difference
dry
NR Not Reported
ND Analyte NOT DETECTED at or above the reporting limit DET Analyte DETECTED
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
APPENDIX C
Jones Environmental Labs, Inc.
July 27 and 28, 2021
Soil Vapor Data
Client: Report date: 7/27/2021
Client Address: Jones Ref. No.: E-1172
Attn: Date Sampled: 7/27/2021
Date Received: 7/27/2021
Project: Date Analyzed: 7/27/2021
Project Address: Physical State: Soil Gas
JONES ENVIRONMENTAL LABORATORY RESULTS
ANALYSES REQUESTED
1. EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics Mearns Consulting Group
738 Ashland Avenue,
Santa Monica CA 90405
Susan L Mearns PhD
Town Center Northwest
2690 Walnut Ave
Signal Hill, CA
Sampling – Soil Gas samples were collected in glass gas-tight syringes equipped with Teflon plungers.
A tracer gas mixture of n-pentane, n-hexane, and n-heptane was placed at the tubing-surface interface before sampling. These compounds were analyzed during the 8260B analytical run to determine if there were surface leaks into the subsurface due to improper installation of the probe. No tracer was detected in any of the samples reported herein.
The sampling rate was approximately 200 cc/min, except when noted differently on the chain of custody record, using a glass gas-tight syringe. Purging was completed using a pump set at approximately 200 cc/min, except when noted differently on the chain of custody record. A default of 3 purge volumes was used as recommended by July 2015 DTSC/RWQCB guidance documents.
Prior to purging and sampling of soil gas at each point, a shut-in test was conducted to check for leaks in the above ground fittings. The shut-in test was performed on the above ground apparatus by evacuating the line to a vacuum of 100 inches of water, sealing the entire system and watching the vacuum for at least one minute. A vacuum gauge attached in parallel to the apparatus measured the vacuum. If there was any observable loss of vacuum, the fittings were adjusted as needed until the vacuum did not change noticeably. The soil gas sample was then taken.
No flow conditions occur when a sampling rate greater than 10 mL/min cannot be maintained without applying a vacuum greater than 100 inches of water to the sampling train. The sampling train is left at a vacuum for no less than three minutes. If the vacuum does not subside appreciably after three minutes, the sample location is determined to be a no flow sample.
Analytical – Soil Gas samples were analyzed using EPA Method 8260 that includes extra compounds required by DTSC/RWQCB (such as Freon 113). Instrument Continuing Calibration Verification, QC Reference Standards, Instrument Blanks and Sampling Blanks were analyzed every 12 hours as prescribed by the method. In addition, a Laboratory Control Sample (LCS) and Laboratory Control Sample Duplicate (LCSD) were analyzed with each batch of Soil Gas samples. A duplicate/replicate sample was analyzed each day of the sampling activity. All samples were injected into the GC/MS system within 30 minutes of collection.
Approval:
Annalise O’Toole
Mobile Lab Manager
Client: Report date: 7/27/2021
Client Address: Jones Ref. No.: E-1172
Attn: Date Sampled: 7/27/2021
Date Received: 7/27/2021
Project: Date Analyzed: 7/27/2021
Project Address: Physical State: Soil Gas
Sample ID: SV1-5' SV1-15' SV2-5' SV2-15' SV2-15'
REP
Jones ID: E-1172-01 E-1172-02 E-1172-03 E-1172-04 E-1172-05 Analytes:
Benzene ND 13 ND ND ND 8 μg/m3
Bromobenzene ND ND ND ND ND 8 μg/m3
Bromodichloromethane ND ND ND ND ND 8 μg/m3
Bromoform ND ND ND ND ND 8 μg/m3
n-Butylbenzene ND ND ND ND ND 12 μg/m3
sec-Butylbenzene ND ND ND ND ND 12 μg/m3
tert-Butylbenzene ND ND ND ND ND 12 μg/m3
Carbon tetrachloride ND ND ND ND ND 8 μg/m3
Chlorobenzene ND ND ND ND ND 8 μg/m3
Chloroform ND ND ND ND ND 8 μg/m3
2-Chlorotoluene ND ND ND ND ND 12 μg/m3
4-Chlorotoluene ND ND ND ND ND 12 μg/m3
Dibromochloromethane ND ND ND ND ND 8 μg/m3
1,2-Dibromo-3-chloropropane ND ND ND ND ND 8 μg/m3
1,2-Dibromoethane (EDB) ND ND ND ND ND 8 μg/m3
Dibromomethane ND ND ND ND ND 8 μg/m3
1,2- Dichlorobenzene ND ND ND ND ND 16 μg/m3
1,3-Dichlorobenzene ND ND ND ND ND 16 μg/m3
1,4-Dichlorobenzene ND ND ND ND ND 16 μg/m3
Dichlorodifluoromethane ND ND ND ND ND 32 μg/m3
1,1-Dichloroethane ND ND ND ND ND 8 μg/m3
1,2-Dichloroethane ND ND ND ND ND 8 μg/m3
1,1-Dichloroethene ND ND ND ND ND 8 μg/m3
cis-1,2-Dichloroethene ND ND ND ND ND 8 μg/m3
trans-1,2-Dichloroethene ND ND ND ND ND 8 μg/m3
1,2-Dichloropropane ND ND ND ND ND 8 μg/m3
1,3-Dichloropropane ND ND ND ND ND 8 μg/m3
2,2-Dichloropropane ND ND ND ND ND 16 μg/m3
1,1-Dichloropropene ND ND ND ND ND 10 μg/m3
JONES ENVIRONMENTAL LABORATORY RESULTS
738 Ashland Avenue,
Susan L Mearns PhD
Mearns Consulting Group
Santa Monica CA 90405
Town Center Northwest
Reporting Limit
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics Units
2690 Walnut Ave
Signal Hill, CA
Sample ID: SV1-5' SV1-15' SV2-5' SV2-15' SV2-15'
REP
Jones ID: E-1172-01 E-1172-02 E-1172-03 E-1172-04 E-1172-05 Analytes:
cis-1,3-Dichloropropene ND ND ND ND ND 8 μg/m3
trans-1,3-Dichloropropene ND ND ND ND ND 8 μg/m3
Ethylbenzene ND ND ND ND ND 8 μg/m3
Freon 113 ND ND ND ND ND 16 μg/m3
Hexachlorobutadiene ND ND ND ND ND 24 μg/m3
Isopropylbenzene ND 57 ND ND ND 8 μg/m3
4-Isopropyltoluene ND 321 ND ND ND 8 μg/m3
Methylene chloride ND 20 ND 17 26 8 μg/m3
Naphthalene ND ND ND ND ND 40 μg/m3
n-Propylbenzene ND ND ND ND ND 8 μg/m3
Styrene ND ND ND ND ND 8 μg/m3
1,1,1,2-Tetrachloroethane ND ND ND ND ND 8 μg/m3
1,1,2,2-Tetrachloroethane ND ND ND ND ND 16 μg/m3
Tetrachloroethene ND ND ND ND ND 8 μg/m3
Toluene ND 16 ND ND ND 8 μg/m3
1,2,3-Trichlorobenzene ND ND ND ND ND 16 μg/m3
1,2,4-Trichlorobenzene ND ND ND ND ND 16 μg/m3
1,1,1-Trichloroethane ND ND ND ND ND 8 μg/m3
1,1,2-Trichloroethane ND ND ND ND ND 8 μg/m3
Trichloroethene ND ND ND ND ND 8 μg/m3
Trichlorofluoromethane ND ND ND ND ND 32 μg/m3
1,2,3-Trichloropropane ND ND ND ND ND 8 μg/m3
1,2,4-Trimethylbenzene ND ND ND ND ND 8 μg/m3
1,3,5-Trimethylbenzene ND ND ND ND ND 8 μg/m3
Vinyl chloride ND ND ND ND ND 8 μg/m3
m,p-Xylene ND ND ND ND ND 16 μg/m3
o-Xylene ND ND ND ND ND 8 μg/m3
MTBE ND ND ND ND ND 40 μg/m3
Ethyl-tert-butylether ND ND ND ND ND 40 μg/m3
Di-isopropylether ND ND ND ND ND 40 μg/m3
tert-amylmethylether ND ND ND ND ND 40 μg/m3
tert-Butylalcohol ND ND ND ND ND 400 μg/m3
Gasoline Range Organics (C4-C12) ND 25000 ND ND ND 2000 μg/m3 Tracer:
n-Pentane ND ND ND ND ND 80 μg/m3
n-Hexane ND ND ND ND ND 80 μg/m3
n-Heptane ND ND ND ND ND 80 μg/m3
Dilution Factor 1 1 1 1 1
Surrogate Recoveries:
Dibromofluoromethane 104% 101% 102% 101% 100%
Toluene-d₈ 94% 95% 94% 92% 93%
4-Bromofluorobenzene 94% 97% 94% 92% 92%
Batch ID: E3-072721-
01 E3-072721-
01 E3-072721-
01 E3-072721-
01 E3-072721-
01 ND = Value below reporting limit
60 - 140
60 - 140
Reporting Limit Units
60 - 140
QC Limits
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics
JONES ENVIRONMENTAL LABORATORY RESULTS
Client: Report date: 7/27/2021
Client Address: Jones Ref. No.: E-1172
Attn: Date Sampled: 7/27/2021
Date Received: 7/27/2021
Project: Date Analyzed: 7/27/2021
Project Address: Physical State: Soil Gas
Sample ID: SV3-5' SV3-15' SV4-5' SV4-15' SV5-5'
Jones ID: E-1172-06 E-1172-07 E-1172-08 E-1172-09 E-1172-10 Analytes:
Benzene ND ND ND ND ND 8 μg/m3
Bromobenzene ND ND ND ND ND 8 μg/m3
Bromodichloromethane ND ND ND ND ND 8 μg/m3
Bromoform ND ND ND ND ND 8 μg/m3
n-Butylbenzene ND ND ND ND ND 12 μg/m3
sec-Butylbenzene ND ND ND ND ND 12 μg/m3
tert-Butylbenzene ND ND ND ND ND 12 μg/m3
Carbon tetrachloride ND ND ND ND ND 8 μg/m3
Chlorobenzene ND ND ND ND ND 8 μg/m3
Chloroform ND ND ND ND ND 8 μg/m3
2-Chlorotoluene ND ND ND ND ND 12 μg/m3
4-Chlorotoluene ND ND ND ND ND 12 μg/m3
Dibromochloromethane ND ND ND ND ND 8 μg/m3
1,2-Dibromo-3-chloropropane ND ND ND ND ND 8 μg/m3
1,2-Dibromoethane (EDB) ND ND ND ND ND 8 μg/m3
Dibromomethane ND ND ND ND ND 8 μg/m3
1,2- Dichlorobenzene ND ND ND ND ND 16 μg/m3
1,3-Dichlorobenzene ND ND ND ND ND 16 μg/m3
1,4-Dichlorobenzene ND ND ND ND ND 16 μg/m3
Dichlorodifluoromethane ND ND ND ND ND 32 μg/m3
1,1-Dichloroethane ND ND ND ND ND 8 μg/m3
1,2-Dichloroethane ND ND ND ND ND 8 μg/m3
1,1-Dichloroethene ND ND ND ND ND 8 μg/m3
cis-1,2-Dichloroethene ND ND ND ND ND 8 μg/m3
trans-1,2-Dichloroethene ND ND ND ND ND 8 μg/m3
1,2-Dichloropropane ND ND ND ND ND 8 μg/m3
1,3-Dichloropropane ND ND ND ND ND 8 μg/m3
2,2-Dichloropropane ND ND ND ND ND 16 μg/m3
1,1-Dichloropropene ND ND ND ND ND 10 μg/m3
Susan L Mearns PhD
Town Center Northwest
2690 Walnut Ave
Signal Hill, CA
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics Reporting Limit Units
JONES ENVIRONMENTAL LABORATORY RESULTS
Mearns Consulting Group
738 Ashland Avenue,
Santa Monica CA 90405
Sample ID: SV3-5' SV3-15' SV4-5' SV4-15' SV5-5'
Jones ID: E-1172-06 E-1172-07 E-1172-08 E-1172-09 E-1172-10 Analytes:
cis-1,3-Dichloropropene ND ND ND ND ND 8 μg/m3
trans-1,3-Dichloropropene ND ND ND ND ND 8 μg/m3
Ethylbenzene ND ND ND ND ND 8 μg/m3
Freon 113 ND ND ND ND ND 16 μg/m3
Hexachlorobutadiene ND ND ND ND ND 24 μg/m3
Isopropylbenzene ND ND ND ND ND 8 μg/m3
4-Isopropyltoluene ND ND ND ND ND 8 μg/m3
Methylene chloride ND 8 ND ND ND 8 μg/m3
Naphthalene ND ND ND ND ND 40 μg/m3
n-Propylbenzene ND ND ND ND ND 8 μg/m3
Styrene ND ND ND ND ND 8 μg/m3
1,1,1,2-Tetrachloroethane ND ND ND ND ND 8 μg/m3
1,1,2,2-Tetrachloroethane ND ND ND ND ND 16 μg/m3
Tetrachloroethene 18 17 22 12 ND 8 μg/m3
Toluene ND ND ND ND ND 8 μg/m3
1,2,3-Trichlorobenzene ND ND ND ND ND 16 μg/m3
1,2,4-Trichlorobenzene ND ND ND ND ND 16 μg/m3
1,1,1-Trichloroethane ND ND ND ND ND 8 μg/m3
1,1,2-Trichloroethane ND ND ND ND ND 8 μg/m3
Trichloroethene ND ND ND ND ND 8 μg/m3
Trichlorofluoromethane ND ND ND ND ND 32 μg/m3
1,2,3-Trichloropropane ND ND ND ND ND 8 μg/m3
1,2,4-Trimethylbenzene ND ND ND ND ND 8 μg/m3
1,3,5-Trimethylbenzene ND ND ND ND ND 8 μg/m3
Vinyl chloride ND ND ND ND ND 8 μg/m3
m,p-Xylene ND ND ND ND ND 16 μg/m3
o-Xylene ND ND ND ND ND 8 μg/m3
MTBE ND ND ND ND ND 40 μg/m3
Ethyl-tert-butylether ND ND ND ND ND 40 μg/m3
Di-isopropylether ND ND ND ND ND 40 μg/m3
tert-amylmethylether ND ND ND ND ND 40 μg/m3
tert-Butylalcohol ND ND ND ND ND 400 μg/m3
Gasoline Range Organics (C4-C12) ND ND ND ND ND 2000 μg/m3 Tracer:
n-Pentane ND ND ND ND ND 80 μg/m3
n-Hexane ND ND ND ND ND 80 μg/m3
n-Heptane ND ND ND ND ND 80 μg/m3
Dilution Factor 1 1 1 1 1
Surrogate Recoveries:
Dibromofluoromethane 104% 102% 104% 100% 106%
Toluene-d₈ 93% 94% 93% 92% 93%
4-Bromofluorobenzene 93% 92% 94% 93% 92%
Batch ID: E3-072721-
01 E3-072721-
01 E3-072721-
01 E3-072721-
01 E3-072721-
01 ND = Value below reporting limit
60 - 140
60 - 140
60 - 140
JONES ENVIRONMENTAL LABORATORY RESULTS
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics Reporting Limit Units
QC Limits
Client: Report date: 7/27/2021
Client Address: Jones Ref. No.: E-1172
Attn: Date Sampled: 7/27/2021
Date Received: 7/27/2021
Project: Date Analyzed: 7/27/2021
Project Address: Physical State: Soil Gas
Sample ID: SV5-15' SV6-5' SV6-15' SV7-5' SV7-15'
Jones ID: E-1172-11 E-1172-12 E-1172-13 E-1172-14 E-1172-15 Analytes:
Benzene ND ND 243 ND 8850 8 μg/m3
Bromobenzene ND ND ND ND ND 8 μg/m3
Bromodichloromethane ND ND ND ND ND 8 μg/m3
Bromoform ND ND ND ND ND 8 μg/m3
n-Butylbenzene ND ND ND ND ND 12 μg/m3
sec-Butylbenzene ND ND ND ND ND 12 μg/m3
tert-Butylbenzene ND ND ND ND ND 12 μg/m3
Carbon tetrachloride ND ND ND ND ND 8 μg/m3
Chlorobenzene ND ND ND ND ND 8 μg/m3
Chloroform ND ND ND ND ND 8 μg/m3
2-Chlorotoluene ND ND ND ND ND 12 μg/m3
4-Chlorotoluene ND ND ND ND ND 12 μg/m3
Dibromochloromethane ND ND ND ND ND 8 μg/m3
1,2-Dibromo-3-chloropropane ND ND ND ND ND 8 μg/m3
1,2-Dibromoethane (EDB) ND ND ND ND ND 8 μg/m3
Dibromomethane ND ND ND ND ND 8 μg/m3
1,2- Dichlorobenzene ND ND ND ND ND 16 μg/m3
1,3-Dichlorobenzene ND ND ND ND ND 16 μg/m3
1,4-Dichlorobenzene ND ND ND ND ND 16 μg/m3
Dichlorodifluoromethane ND ND ND ND ND 32 μg/m3
1,1-Dichloroethane ND ND ND ND ND 8 μg/m3
1,2-Dichloroethane ND ND ND ND ND 8 μg/m3
1,1-Dichloroethene ND ND ND ND ND 8 μg/m3
cis-1,2-Dichloroethene ND ND ND ND ND 8 μg/m3
trans-1,2-Dichloroethene ND ND ND ND ND 8 μg/m3
1,2-Dichloropropane ND ND ND ND ND 8 μg/m3
1,3-Dichloropropane ND ND ND ND ND 8 μg/m3
2,2-Dichloropropane ND ND ND ND ND 16 μg/m3
1,1-Dichloropropene ND ND ND ND ND 10 μg/m3
Susan L Mearns PhD
Town Center Northwest
2690 Walnut Ave
Signal Hill, CA
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics Reporting Limit Units
JONES ENVIRONMENTAL LABORATORY RESULTS
Mearns Consulting Group
738 Ashland Avenue,
Santa Monica CA 90405
Sample ID: SV5-15' SV6-5' SV6-15' SV7-5' SV7-15'
Jones ID: E-1172-11 E-1172-12 E-1172-13 E-1172-14 E-1172-15 Analytes:
cis-1,3-Dichloropropene ND ND ND ND ND 8 μg/m3
trans-1,3-Dichloropropene ND ND ND ND ND 8 μg/m3
Ethylbenzene ND ND ND ND ND 8 μg/m3
Freon 113 ND ND ND ND ND 16 μg/m3
Hexachlorobutadiene ND ND ND ND ND 24 μg/m3
Isopropylbenzene ND ND ND ND ND 8 μg/m3
4-Isopropyltoluene ND ND ND ND ND 8 μg/m3
Methylene chloride 9 ND ND ND ND 8 μg/m3
Naphthalene ND ND ND ND ND 40 μg/m3
n-Propylbenzene ND ND ND ND ND 8 μg/m3
Styrene ND ND ND ND ND 8 μg/m3
1,1,1,2-Tetrachloroethane ND ND ND ND ND 8 μg/m3
1,1,2,2-Tetrachloroethane ND ND ND ND ND 16 μg/m3
Tetrachloroethene ND 17 8 ND ND 8 μg/m3
Toluene ND ND ND ND 4210 8 μg/m3
1,2,3-Trichlorobenzene ND ND ND ND ND 16 μg/m3
1,2,4-Trichlorobenzene ND ND ND ND ND 16 μg/m3
1,1,1-Trichloroethane ND ND ND ND ND 8 μg/m3
1,1,2-Trichloroethane ND ND ND ND ND 8 μg/m3
Trichloroethene ND ND ND ND ND 8 μg/m3
Trichlorofluoromethane ND ND ND ND ND 32 μg/m3
1,2,3-Trichloropropane ND ND ND ND ND 8 μg/m3
1,2,4-Trimethylbenzene ND ND ND ND ND 8 μg/m3
1,3,5-Trimethylbenzene ND ND ND ND ND 8 μg/m3
Vinyl chloride ND ND ND ND ND 8 μg/m3
m,p-Xylene ND ND ND ND 799 16 μg/m3
o-Xylene ND ND ND ND 441 8 μg/m3
MTBE ND ND ND ND ND 40 μg/m3
Ethyl-tert-butylether ND ND ND ND ND 40 μg/m3
Di-isopropylether ND ND ND ND ND 40 μg/m3
tert-amylmethylether ND ND ND ND ND 40 μg/m3
tert-Butylalcohol ND ND ND ND ND 400 μg/m3
Gasoline Range Organics (C4-C12) ND ND 317000 ND 46300000 2000 μg/m3 Tracer:
n-Pentane ND ND ND ND ND 80 μg/m3
n-Hexane ND ND ND ND ND 80 μg/m3
n-Heptane ND ND ND ND ND 80 μg/m3
Dilution Factor 1 1 1 1 30
Surrogate Recoveries:
Dibromofluoromethane 102% 100% 97% 100% 97%
Toluene-d₈ 95% 92% 101% 93% 97%
4-Bromofluorobenzene 94% 94% 91% 93% 96%
Batch ID: E3-072721-
01 E3-072721-
01 E3-072721-
01 E3-072721-
01 E3-072721-
01 ND = Value below reporting limit
60 - 140
60 - 140
60 - 140
JONES ENVIRONMENTAL LABORATORY RESULTS
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics Reporting Limit Units
QC Limits
Client: Report date: 7/27/2021
Client Address: Jones Ref. No.: E-1172
Attn: Date Sampled: 7/27/2021
Date Received: 7/27/2021
Project: Date Analyzed: 7/27/2021
Project Address: Physical State: Soil Gas
Sample ID: SV8-5' SV8-15' SV9-5' SV7-15' DIL
Jones ID: E-1172-16 E-1172-17 E-1172-18 -
Analytes:
Benzene 20 ND ND ND ND 8 μg/m3
Bromobenzene ND ND ND ND ND 8 μg/m3
Bromodichloromethane ND ND ND ND ND 8 μg/m3
Bromoform ND ND ND ND ND 8 μg/m3
n-Butylbenzene ND ND ND ND ND 12 μg/m3
sec-Butylbenzene ND ND ND ND ND 12 μg/m3
tert-Butylbenzene ND ND ND ND ND 12 μg/m3
Carbon tetrachloride ND ND ND ND ND 8 μg/m3
Chlorobenzene ND ND ND ND ND 8 μg/m3
Chloroform ND ND ND ND ND 8 μg/m3
2-Chlorotoluene ND ND ND ND ND 12 μg/m3
4-Chlorotoluene ND ND ND ND ND 12 μg/m3
Dibromochloromethane ND ND ND ND ND 8 μg/m3
1,2-Dibromo-3-chloropropane ND ND ND ND ND 8 μg/m3
1,2-Dibromoethane (EDB) ND ND ND ND ND 8 μg/m3
Dibromomethane ND ND ND ND ND 8 μg/m3
1,2- Dichlorobenzene ND ND ND ND ND 16 μg/m3
1,3-Dichlorobenzene ND ND ND ND ND 16 μg/m3
1,4-Dichlorobenzene ND ND ND ND ND 16 μg/m3
Dichlorodifluoromethane ND ND ND ND ND 32 μg/m3
1,1-Dichloroethane ND ND ND ND ND 8 μg/m3
1,2-Dichloroethane ND ND ND ND ND 8 μg/m3
1,1-Dichloroethene ND ND ND ND ND 8 μg/m3
cis-1,2-Dichloroethene ND ND ND ND ND 8 μg/m3
trans-1,2-Dichloroethene ND ND ND ND ND 8 μg/m3
1,2-Dichloropropane ND ND ND ND ND 8 μg/m3
1,3-Dichloropropane ND ND ND ND ND 8 μg/m3
2,2-Dichloropropane ND ND ND ND ND 16 μg/m3
1,1-Dichloropropene ND ND ND ND ND 10 μg/m3
Reporting Limit Units
Susan L Mearns PhD
Town Center Northwest
2690 Walnut Ave
Signal Hill, CA
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics
JONES ENVIRONMENTAL LABORATORY RESULTS
Mearns Consulting Group
738 Ashland Avenue,
Santa Monica CA 90405
Sample ID: SV8-5' SV8-15' SV9-5' SV7-15' DIL
Jones ID: E-1172-16 E-1172-17 E-1172-18 -
Analytes:
cis-1,3-Dichloropropene ND ND ND ND ND 8 μg/m3
trans-1,3-Dichloropropene ND ND ND ND ND 8 μg/m3
Ethylbenzene ND ND ND ND ND 8 μg/m3
Freon 113 ND ND ND ND ND 16 μg/m3
Hexachlorobutadiene ND ND ND ND ND 24 μg/m3
Isopropylbenzene ND ND ND ND ND 8 μg/m3
4-Isopropyltoluene ND ND ND ND ND 8 μg/m3
Methylene chloride ND ND ND ND ND 8 μg/m3
Naphthalene ND ND ND ND ND 40 μg/m3
n-Propylbenzene ND ND ND ND ND 8 μg/m3
Styrene ND ND ND ND ND 8 μg/m3
1,1,1,2-Tetrachloroethane ND ND ND ND ND 8 μg/m3
1,1,2,2-Tetrachloroethane ND ND ND ND ND 16 μg/m3
Tetrachloroethene 23 ND ND ND ND 8 μg/m3
Toluene 15 ND ND ND ND 8 μg/m3
1,2,3-Trichlorobenzene ND ND ND ND ND 16 μg/m3
1,2,4-Trichlorobenzene ND ND ND ND ND 16 μg/m3
1,1,1-Trichloroethane ND ND ND ND ND 8 μg/m3
1,1,2-Trichloroethane ND ND ND ND ND 8 μg/m3
Trichloroethene ND ND ND ND ND 8 μg/m3
Trichlorofluoromethane ND ND ND ND ND 32 μg/m3
1,2,3-Trichloropropane ND ND ND ND ND 8 μg/m3
1,2,4-Trimethylbenzene ND ND ND ND ND 8 μg/m3
1,3,5-Trimethylbenzene ND ND ND ND ND 8 μg/m3
Vinyl chloride ND ND ND ND ND 8 μg/m3
m,p-Xylene ND ND ND ND ND 16 μg/m3
o-Xylene ND ND ND ND ND 8 μg/m3
MTBE ND ND ND ND ND 40 μg/m3
Ethyl-tert-butylether ND ND ND ND ND 40 μg/m3
Di-isopropylether ND ND ND ND ND 40 μg/m3
tert-amylmethylether ND ND ND ND ND 40 μg/m3
tert-Butylalcohol ND ND ND ND ND 400 μg/m3
Gasoline Range Organics (C4-C12) ND ND ND ND ND 2000 μg/m3 Tracer:
n-Pentane ND ND ND ND ND 80 μg/m3
n-Hexane ND ND ND ND ND 80 μg/m3
n-Heptane ND ND ND ND ND 80 μg/m3
Dilution Factor 1 1 1 1 1
Surrogate Recoveries:
Dibromofluoromethane 95% 96% 95%
Toluene-d₈ 94% 92% 93%
4-Bromofluorobenzene 95% 96% 94%
Batch ID: E3-072721-
01 E3-072721-
01 E3-072721-
01 60 - 140
ND = Value below reporting limit
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics Reporting Limit Units
QC Limits
60 - 140
60 - 140
JONES ENVIRONMENTAL LABORATORY RESULTS
Client: Report date: 7/27/2021
Client Address: Jones Ref. No.: E-1172
Attn: Date Sampled: 7/27/2021
Date Received: 7/27/2021
Project: Date Analyzed: 7/27/2021
Project Address: Physical State: Soil Gas
Sample ID: METHOD
BLANK
SAMPLING
BLANK
METHOD
BLANK
SAMPLING
BLANK
Jones ID: 072721-
E3MB1
072721-
E3SB1
072721-
E3MB1
072721-
E3SB1
Analytes:
Benzene ND ND ND ND 8 μg/m3
Bromobenzene ND ND ND ND 8 μg/m3
Bromodichloromethane ND ND ND ND 8 μg/m3
Bromoform ND ND ND ND 8 μg/m3
n-Butylbenzene ND ND ND ND 12 μg/m3
sec-Butylbenzene ND ND ND ND 12 μg/m3
tert-Butylbenzene ND ND ND ND 12 μg/m3
Carbon tetrachloride ND ND ND ND 8 μg/m3
Chlorobenzene ND ND ND ND 8 μg/m3
Chloroform ND ND ND ND 8 μg/m3
2-Chlorotoluene ND ND ND ND 12 μg/m3
4-Chlorotoluene ND ND ND ND 12 μg/m3
Dibromochloromethane ND ND ND ND 8 μg/m3
1,2-Dibromo-3-chloropropane ND ND ND ND 8 μg/m3
1,2-Dibromoethane (EDB) ND ND ND ND 8 μg/m3
Dibromomethane ND ND ND ND 8 μg/m3
1,2- Dichlorobenzene ND ND ND ND 16 μg/m3
1,3-Dichlorobenzene ND ND ND ND 16 μg/m3
1,4-Dichlorobenzene ND ND ND ND 16 μg/m3
Dichlorodifluoromethane ND ND ND ND 32 μg/m3
1,1-Dichloroethane ND ND ND ND 8 μg/m3
1,2-Dichloroethane ND ND ND ND 8 μg/m3
1,1-Dichloroethene ND ND ND ND 8 μg/m3
cis-1,2-Dichloroethene ND ND ND ND 8 μg/m3
trans-1,2-Dichloroethene ND ND ND ND 8 μg/m3
1,2-Dichloropropane ND ND ND ND 8 μg/m3
1,3-Dichloropropane ND ND ND ND 8 μg/m3
2,2-Dichloropropane ND ND ND ND 16 μg/m3
1,1-Dichloropropene ND ND ND ND 10 μg/m3
JONES ENVIRONMENTAL QUALITY CONTROL INFORMATION
Mearns Consulting Group
738 Ashland Avenue,
Santa Monica CA 90405
2690 Walnut Ave
Signal Hill, CA
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics Susan L Mearns PhD
Town Center Northwest
Reporting Limit Units
Sample ID: METHOD
BLANK
SAMPLING
BLANK
METHOD
BLANK
SAMPLING
BLANK
Jones ID: 072721-
E3MB1
072721-
E3SB1
072721-
E3MB1
072721-
E3SB1
Analytes:
cis-1,3-Dichloropropene ND ND ND ND 8 μg/m3
trans-1,3-Dichloropropene ND ND ND ND 8 μg/m3
Ethylbenzene ND ND ND ND 8 μg/m3
Freon 113 ND ND ND ND 16 μg/m3
Hexachlorobutadiene ND ND ND ND 24 μg/m3
Isopropylbenzene ND ND ND ND 8 μg/m3
4-Isopropyltoluene ND ND ND ND 8 μg/m3
Methylene chloride ND ND ND ND 8 μg/m3
Naphthalene ND ND ND ND 40 μg/m3
n-Propylbenzene ND ND ND ND 8 μg/m3
Styrene ND ND ND ND 8 μg/m3
1,1,1,2-Tetrachloroethane ND ND ND ND 8 μg/m3
1,1,2,2-Tetrachloroethane ND ND ND ND 16 μg/m3
Tetrachloroethene ND ND ND ND 8 μg/m3
Toluene ND ND ND ND 8 μg/m3
1,2,3-Trichlorobenzene ND ND ND ND 16 μg/m3
1,2,4-Trichlorobenzene ND ND ND ND 16 μg/m3
1,1,1-Trichloroethane ND ND ND ND 8 μg/m3
1,1,2-Trichloroethane ND ND ND ND 8 μg/m3
Trichloroethene ND ND ND ND 8 μg/m3
Trichlorofluoromethane ND ND ND ND 32 μg/m3
1,2,3-Trichloropropane ND ND ND ND 8 μg/m3
1,2,4-Trimethylbenzene ND ND ND ND 8 μg/m3
1,3,5-Trimethylbenzene ND ND ND ND 8 μg/m3
Vinyl chloride ND ND ND ND 8 μg/m3
m,p-Xylene ND ND ND ND 16 μg/m3
o-Xylene ND ND ND ND 8 μg/m3
MTBE ND ND ND ND 40 μg/m3
Ethyl-tert-butylether ND ND ND ND 40 μg/m3
Di-isopropylether ND ND ND ND 40 μg/m3
tert-amylmethylether ND ND ND ND 40 μg/m3
tert-Butylalcohol ND ND ND ND 400 μg/m3
Gasoline Range Organics (C4-C12) ND ND ND ND 2000 μg/m3 Tracer:
n-Pentane ND ND ND ND 80 μg/m3
n-Hexane ND ND ND ND 80 μg/m3
n-Heptane ND ND ND ND 80 μg/m3
Dilution Factor 1 1 1 1
Surrogate Recoveries:
Dibromofluoromethane 106% 100%
Toluene-d₈ 96% 96%
4-Bromofluorobenzene 93% 95%
Batch ID: E3-072721-
01 E3-072721-
01 E3-072721-
01 E3-072721-
01 ND = Value below reporting limit
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics Reporting Limit Units
60 - 140
JONES ENVIRONMENTAL QUALITY CONTROL INFORMATION
60 - 140
60 - 140
QC Limits
Client: 7/27/2021
Client Address: E-1172
Attn: 7/27/2021
7/27/2021
Project: 7/27/2021
Project Address: Soil Gas
QC ID:
Jones ID: 072721-E3CCV1
Parameter RPD
Acceptability
Range (%) CCV
Acceptability
Range (%)
Vinyl chloride 5.7% 60 - 140 109% 80 - 120
1,1-Dichloroethene 8.1% 60 - 140 80% 80 - 120
Cis-1,2-Dichloroethene 3.5% 70 - 130 86% 80 - 120
1,1,1-Trichloroethane 6.6% 70 - 130 85% 80 - 120
Benzene 4.9% 70 - 130 101% 80 - 120
Trichloroethene 3.7% 70 - 130 101% 80 - 120
Toluene 4.2% 70 - 130 97% 80 - 120
Tetrachloroethene 2.0% 70 - 130 97% 80 - 120
Chlorobenzene 3.7% 70 - 130 95% 80 - 120
Ethylbenzene 9.2% 70 - 130 94% 80 - 120
1,2,4 Trimethylbenzene 1.2% 70 - 130 87% 80 - 120
Gasoline Range Organics (C4-C12) 5.0% 70 - 130 95% 80 - 120 Surrogate Recovery:
Dibromofluoromethane 60 - 140 100% 60 - 140
Toluene-d₈ 60 - 140 95% 60 - 140
4-Bromofluorobenzene 60 - 140 97% 60 - 140
RPD = Relative Percent Difference; Acceptability range for RPD is ≤ 20% LCS = Laboratory Control Sample
LCSD = Laboratory Control Sample Duplicate
CCV = Continuing Calibration Verification
102% 102%
97% 96%
96% 96%
99% 108%
92% 93%
102% 107%
109%
116% 114%
109% 113%
121% 114%
110% 101%
105% 102%
98% 104%
113% 119%
115% 119%
104%
E3-072721-01
072721-E3LCS1 072721-E3LCSD1
LCS
Recovery (%)
LCSD
Recovery (%)
2690 Walnut Ave Physical State:
Signal Hill, CA
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics Susan L Mearns PhD Date Sampled:
Date Received:
Town Center Northwest Date Analyzed:
738 Ashland Avenue, Jones Ref. No.:
Santa Monica CA 90405
JONES ENVIRONMENTAL QUALITY CONTROL INFORMATION
Mearns Consulting Group Report date:
Client: Report date: 7/28/2021
Client Address: Jones Ref. No.: E-1173
Attn: Date Sampled: 7/28/2021
Date Received: 7/28/2021
Project: Date Analyzed: 7/28/2021
Project Address: Physical State: Soil Gas
JONES ENVIRONMENTAL LABORATORY RESULTS
ANALYSES REQUESTED
1. EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics Mearns Consulting Group
738 Ashland Avenue,
Santa Monica CA 90405
Susan L Mearns PhD
Town Center Northwest
2690 Walnut Ave
Signal Hill, CA
Sampling – Soil Gas samples were collected in glass gas-tight syringes equipped with Teflon plungers.
A tracer gas mixture of n-pentane, n-hexane, and n-heptane was placed at the tubing-surface interface before sampling. These compounds were analyzed during the 8260B analytical run to determine if there were surface leaks into the subsurface due to improper installation of the probe. No tracer was detected in any of the samples reported herein.
The sampling rate was approximately 200 cc/min, except when noted differently on the chain of custody record, using a glass gas-tight syringe. Purging was completed using a pump set at approximately 200 cc/min, except when noted differently on the chain of custody record. A default of 3 purge volumes was used as recommended by July 2015 DTSC/RWQCB guidance documents.
Prior to purging and sampling of soil gas at each point, a shut-in test was conducted to check for leaks in the above ground fittings. The shut-in test was performed on the above ground apparatus by evacuating the line to a vacuum of 100 inches of water, sealing the entire system and watching the vacuum for at least one minute. A vacuum gauge attached in parallel to the apparatus measured the vacuum. If there was any observable loss of vacuum, the fittings were adjusted as needed until the vacuum did not change noticeably. The soil gas sample was then taken.
No flow conditions occur when a sampling rate greater than 10 mL/min cannot be maintained without applying a vacuum greater than 100 inches of water to the sampling train. The sampling train is left at a vacuum for no less than three minutes. If the vacuum does not subside appreciably after three minutes, the sample location is determined to be a no flow sample.
Analytical – Soil Gas samples were analyzed using EPA Method 8260 that includes extra compounds required by DTSC/RWQCB (such as Freon 113). Instrument Continuing Calibration Verification, QC Reference Standards, Instrument Blanks and Sampling Blanks were analyzed every 12 hours as prescribed by the method. In addition, a Laboratory Control Sample (LCS) and Laboratory Control Sample Duplicate (LCSD) were analyzed with each batch of Soil Gas samples. A duplicate/replicate sample was analyzed each day of the sampling activity. All samples were injected into the GC/MS system within 30 minutes of collection.
Approval:
Annalise O’Toole
Mobile Lab Manager
Client: Report date: 7/28/2021
Client Address: Jones Ref. No.: E-1173
Attn: Date Sampled: 7/28/2021
Date Received: 7/28/2021
Project: Date Analyzed: 7/28/2021
Project Address: Physical State: Soil Gas
Sample ID: SV9-15' SV9-15'
REP SV10-5' SV10-15' SV11-5'
Jones ID: E-1173-01 E-1173-02 E-1173-03 E-1173-04 E-1173-05 Analytes:
Benzene ND ND ND ND ND 8 μg/m3
Bromobenzene ND ND ND ND ND 8 μg/m3
Bromodichloromethane ND ND ND ND ND 8 μg/m3
Bromoform ND ND ND ND ND 8 μg/m3
n-Butylbenzene ND ND ND ND ND 12 μg/m3
sec-Butylbenzene ND ND ND ND ND 12 μg/m3
tert-Butylbenzene ND ND ND ND ND 12 μg/m3
Carbon tetrachloride ND ND ND ND ND 8 μg/m3
Chlorobenzene ND ND ND ND ND 8 μg/m3
Chloroform ND ND ND ND ND 8 μg/m3
2-Chlorotoluene ND ND ND ND ND 12 μg/m3
4-Chlorotoluene ND ND ND ND ND 12 μg/m3
Dibromochloromethane ND ND ND ND ND 8 μg/m3
1,2-Dibromo-3-chloropropane ND ND ND ND ND 8 μg/m3
1,2-Dibromoethane (EDB) ND ND ND ND ND 8 μg/m3
Dibromomethane ND ND ND ND ND 8 μg/m3
1,2- Dichlorobenzene ND ND ND ND ND 16 μg/m3
1,3-Dichlorobenzene ND ND ND ND ND 16 μg/m3
1,4-Dichlorobenzene ND ND ND ND ND 16 μg/m3
Dichlorodifluoromethane ND ND ND ND ND 32 μg/m3
1,1-Dichloroethane ND ND ND ND ND 8 μg/m3
1,2-Dichloroethane ND ND ND ND ND 8 μg/m3
1,1-Dichloroethene ND ND ND ND ND 8 μg/m3
cis-1,2-Dichloroethene ND ND ND ND ND 8 μg/m3
trans-1,2-Dichloroethene ND ND ND ND ND 8 μg/m3
1,2-Dichloropropane ND ND ND ND ND 8 μg/m3
1,3-Dichloropropane ND ND ND ND ND 8 μg/m3
2,2-Dichloropropane ND ND ND ND ND 16 μg/m3
1,1-Dichloropropene ND ND ND ND ND 10 μg/m3
JONES ENVIRONMENTAL LABORATORY RESULTS
738 Ashland Avenue,
Susan L Mearns PhD
Mearns Consulting Group
Santa Monica CA 90405
Town Center Northwest
Reporting Limit
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics Units
2690 Walnut Ave
Signal Hill, CA
Sample ID: SV9-15' SV9-15'
REP SV10-5' SV10-15' SV11-5'
Jones ID: E-1173-01 E-1173-02 E-1173-03 E-1173-04 E-1173-05 Analytes:
cis-1,3-Dichloropropene ND ND ND ND ND 8 μg/m3
trans-1,3-Dichloropropene ND ND ND ND ND 8 μg/m3
Ethylbenzene ND ND ND ND ND 8 μg/m3
Freon 113 ND ND ND ND ND 16 μg/m3
Hexachlorobutadiene ND ND ND ND ND 24 μg/m3
Isopropylbenzene ND ND ND ND ND 8 μg/m3
4-Isopropyltoluene ND ND ND ND ND 8 μg/m3
Methylene chloride ND ND ND ND ND 8 μg/m3
Naphthalene ND ND ND ND ND 40 μg/m3
n-Propylbenzene ND ND ND ND ND 8 μg/m3
Styrene ND ND ND ND ND 8 μg/m3
1,1,1,2-Tetrachloroethane ND ND ND ND ND 8 μg/m3
1,1,2,2-Tetrachloroethane ND ND ND ND ND 16 μg/m3
Tetrachloroethene 34 34 9 8 24 8 μg/m3
Toluene 13 14 ND ND ND 8 μg/m3
1,2,3-Trichlorobenzene ND ND ND ND ND 16 μg/m3
1,2,4-Trichlorobenzene ND ND ND ND ND 16 μg/m3
1,1,1-Trichloroethane ND ND ND ND ND 8 μg/m3
1,1,2-Trichloroethane ND ND ND ND ND 8 μg/m3
Trichloroethene ND ND ND ND ND 8 μg/m3
Trichlorofluoromethane ND ND ND ND ND 32 μg/m3
1,2,3-Trichloropropane ND ND ND ND ND 8 μg/m3
1,2,4-Trimethylbenzene ND ND ND ND ND 8 μg/m3
1,3,5-Trimethylbenzene ND ND ND ND ND 8 μg/m3
Vinyl chloride ND ND ND ND ND 8 μg/m3
m,p-Xylene ND ND ND ND ND 16 μg/m3
o-Xylene ND ND ND ND ND 8 μg/m3
MTBE ND ND ND ND ND 40 μg/m3
Ethyl-tert-butylether ND ND ND ND ND 40 μg/m3
Di-isopropylether ND ND ND ND ND 40 μg/m3
tert-amylmethylether ND ND ND ND ND 40 μg/m3
tert-Butylalcohol ND ND ND ND ND 400 μg/m3
Gasoline Range Organics (C4-C12) ND ND ND ND ND 2000 μg/m3 Tracer:
n-Pentane ND ND ND ND ND 80 μg/m3
n-Hexane ND ND ND ND ND 80 μg/m3
n-Heptane ND ND ND ND ND 80 μg/m3
Dilution Factor 1 1 1 1 1
Surrogate Recoveries:
Dibromofluoromethane 114%^ 119%^ 108% 123%^ 107%
Toluene-d₈ 103% 104% 89% 102% 89%
4-Bromofluorobenzene 108% @ 97% 108% 96%
Batch ID: E2-072821-
01 E2-072821-
01 E3-072821-
01 E2-072821-
01 E3-072821-
01 ^ = 1,2-dichloroethane-d4 used as surrogate for this batch.
ND = Value below reporting limit
@= Surrogate outside acceptable limits. All other QC parameters in control, therefore data was accepted. 60 - 140
60 - 140
Reporting Limit Units
60 - 140
QC Limits
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics
JONES ENVIRONMENTAL LABORATORY RESULTS
Client: Report date: 7/28/2021
Client Address: Jones Ref. No.: E-1173
Attn: Date Sampled: 7/28/2021
Date Received: 7/28/2021
Project: Date Analyzed: 7/28/2021
Project Address: Physical State: Soil Gas
Sample ID: SV11-15' SV12-5' SV12-15' SV13-5' SV13-5'
REP
Jones ID: E-1173-06 E-1173-07 E-1173-08 E-1173-09 E-1173-10 Analytes:
Benzene ND ND ND ND ND 8 μg/m3
Bromobenzene ND ND ND ND ND 8 μg/m3
Bromodichloromethane ND ND ND ND ND 8 μg/m3
Bromoform ND ND ND ND ND 8 μg/m3
n-Butylbenzene ND ND ND ND ND 12 μg/m3
sec-Butylbenzene ND ND ND ND ND 12 μg/m3
tert-Butylbenzene ND ND ND ND ND 12 μg/m3
Carbon tetrachloride ND ND ND ND ND 8 μg/m3
Chlorobenzene ND ND ND ND ND 8 μg/m3
Chloroform ND ND ND ND ND 8 μg/m3
2-Chlorotoluene ND ND ND ND ND 12 μg/m3
4-Chlorotoluene ND ND ND ND ND 12 μg/m3
Dibromochloromethane ND ND ND ND ND 8 μg/m3
1,2-Dibromo-3-chloropropane ND ND ND ND ND 8 μg/m3
1,2-Dibromoethane (EDB) ND ND ND ND ND 8 μg/m3
Dibromomethane ND ND ND ND ND 8 μg/m3
1,2- Dichlorobenzene ND ND ND ND ND 16 μg/m3
1,3-Dichlorobenzene ND ND ND ND ND 16 μg/m3
1,4-Dichlorobenzene ND ND ND ND ND 16 μg/m3
Dichlorodifluoromethane ND ND ND ND ND 32 μg/m3
1,1-Dichloroethane ND ND ND ND ND 8 μg/m3
1,2-Dichloroethane ND ND ND ND ND 8 μg/m3
1,1-Dichloroethene ND ND ND ND ND 8 μg/m3
cis-1,2-Dichloroethene ND ND ND ND ND 8 μg/m3
trans-1,2-Dichloroethene ND ND ND ND ND 8 μg/m3
1,2-Dichloropropane ND ND ND ND ND 8 μg/m3
1,3-Dichloropropane ND ND ND ND ND 8 μg/m3
2,2-Dichloropropane ND ND ND ND ND 16 μg/m3
1,1-Dichloropropene ND ND ND ND ND 10 μg/m3
Susan L Mearns PhD
Town Center Northwest
2690 Walnut Ave
Signal Hill, CA
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics Reporting Limit Units
JONES ENVIRONMENTAL LABORATORY RESULTS
Mearns Consulting Group
738 Ashland Avenue,
Santa Monica CA 90405
Sample ID: SV11-15' SV12-5' SV12-15' SV13-5' SV13-5'
REP
Jones ID: E-1173-06 E-1173-07 E-1173-08 E-1173-09 E-1173-10 Analytes:
cis-1,3-Dichloropropene ND ND ND ND ND 8 μg/m3
trans-1,3-Dichloropropene ND ND ND ND ND 8 μg/m3
Ethylbenzene ND ND ND ND ND 8 μg/m3
Freon 113 ND ND ND ND ND 16 μg/m3
Hexachlorobutadiene ND ND ND ND ND 24 μg/m3
Isopropylbenzene ND ND ND ND ND 8 μg/m3
4-Isopropyltoluene ND ND ND ND ND 8 μg/m3
Methylene chloride ND ND ND ND ND 8 μg/m3
Naphthalene ND ND ND ND ND 40 μg/m3
n-Propylbenzene ND ND ND ND ND 8 μg/m3
Styrene ND ND ND ND ND 8 μg/m3
1,1,1,2-Tetrachloroethane ND ND ND ND ND 8 μg/m3
1,1,2,2-Tetrachloroethane ND ND ND ND ND 16 μg/m3
Tetrachloroethene ND 8 9 16 25 8 μg/m3
Toluene ND ND ND ND ND 8 μg/m3
1,2,3-Trichlorobenzene ND ND ND ND ND 16 μg/m3
1,2,4-Trichlorobenzene ND ND ND ND ND 16 μg/m3
1,1,1-Trichloroethane ND ND ND ND ND 8 μg/m3
1,1,2-Trichloroethane ND ND ND ND ND 8 μg/m3
Trichloroethene ND ND ND ND ND 8 μg/m3
Trichlorofluoromethane ND ND ND ND ND 32 μg/m3
1,2,3-Trichloropropane ND ND ND ND ND 8 μg/m3
1,2,4-Trimethylbenzene ND ND ND ND ND 8 μg/m3
1,3,5-Trimethylbenzene ND ND ND ND ND 8 μg/m3
Vinyl chloride ND ND ND ND ND 8 μg/m3
m,p-Xylene ND ND ND ND ND 16 μg/m3
o-Xylene ND ND ND ND ND 8 μg/m3
MTBE ND ND ND ND ND 40 μg/m3
Ethyl-tert-butylether ND ND ND ND ND 40 μg/m3
Di-isopropylether ND ND ND ND ND 40 μg/m3
tert-amylmethylether ND ND ND ND ND 40 μg/m3
tert-Butylalcohol ND ND ND ND ND 400 μg/m3
Gasoline Range Organics (C4-C12) ND ND ND ND ND 2000 μg/m3 Tracer:
n-Pentane ND ND ND ND ND 80 μg/m3
n-Hexane ND ND ND ND ND 80 μg/m3
n-Heptane ND ND ND ND ND 80 μg/m3
Dilution Factor 1 1 1 1 1
Surrogate Recoveries:
Dibromofluoromethane 122%^ 105% 124%^ 106% 108%
Toluene-d₈ 105% 87% 102% 87% 88%
4-Bromofluorobenzene 107% 97% 105% 96% 96%
Batch ID: E2-072821-
01 E3-072821-
01 E2-072821-
01 E3-072821-
01 E3-072821-
01 ND = Value below reporting limit
^ = 1,2-dichloroethane-d4 used as surrogate for this batch. 60 - 140
60 - 140
60 - 140
JONES ENVIRONMENTAL LABORATORY RESULTS
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics Reporting Limit Units
QC Limits
Client: Report date: 7/28/2021
Client Address: Jones Ref. No.: E-1173
Attn: Date Sampled: 7/28/2021
Date Received: 7/28/2021
Project: Date Analyzed: 7/28/2021
Project Address: Physical State: Soil Gas
Sample ID: SV13-15' SV14-5' SV14-15' SV15-5' SV15-15'
Jones ID: E-1173-11 E-1173-12 E-1173-13 E-1173-14 E-1173-15 Analytes:
Benzene ND ND ND ND ND 8 μg/m3
Bromobenzene ND ND ND ND ND 8 μg/m3
Bromodichloromethane ND ND ND ND ND 8 μg/m3
Bromoform ND ND ND ND ND 8 μg/m3
n-Butylbenzene ND ND ND ND ND 12 μg/m3
sec-Butylbenzene ND ND ND ND ND 12 μg/m3
tert-Butylbenzene ND ND ND ND ND 12 μg/m3
Carbon tetrachloride ND ND ND ND ND 8 μg/m3
Chlorobenzene ND ND ND ND ND 8 μg/m3
Chloroform ND ND ND ND ND 8 μg/m3
2-Chlorotoluene ND ND ND ND ND 12 μg/m3
4-Chlorotoluene ND ND ND ND ND 12 μg/m3
Dibromochloromethane ND ND ND ND ND 8 μg/m3
1,2-Dibromo-3-chloropropane ND ND ND ND ND 8 μg/m3
1,2-Dibromoethane (EDB) ND ND ND ND ND 8 μg/m3
Dibromomethane ND ND ND ND ND 8 μg/m3
1,2- Dichlorobenzene ND ND ND ND ND 16 μg/m3
1,3-Dichlorobenzene ND ND ND ND ND 16 μg/m3
1,4-Dichlorobenzene ND ND ND ND ND 16 μg/m3
Dichlorodifluoromethane ND ND ND ND ND 32 μg/m3
1,1-Dichloroethane ND ND ND ND ND 8 μg/m3
1,2-Dichloroethane ND ND ND ND ND 8 μg/m3
1,1-Dichloroethene ND ND ND ND ND 8 μg/m3
cis-1,2-Dichloroethene ND ND ND ND ND 8 μg/m3
trans-1,2-Dichloroethene ND ND ND ND ND 8 μg/m3
1,2-Dichloropropane ND ND ND ND ND 8 μg/m3
1,3-Dichloropropane ND ND ND ND ND 8 μg/m3
2,2-Dichloropropane ND ND ND ND ND 16 μg/m3
1,1-Dichloropropene ND ND ND ND ND 10 μg/m3
Susan L Mearns PhD
Town Center Northwest
2690 Walnut Ave
Signal Hill, CA
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics Reporting Limit Units
JONES ENVIRONMENTAL LABORATORY RESULTS
Mearns Consulting Group
738 Ashland Avenue,
Santa Monica CA 90405
Sample ID: SV13-15' SV14-5' SV14-15' SV15-5' SV15-15'
Jones ID: E-1173-11 E-1173-12 E-1173-13 E-1173-14 E-1173-15 Analytes:
cis-1,3-Dichloropropene ND ND ND ND ND 8 μg/m3
trans-1,3-Dichloropropene ND ND ND ND ND 8 μg/m3
Ethylbenzene ND ND ND ND ND 8 μg/m3
Freon 113 ND ND ND ND ND 16 μg/m3
Hexachlorobutadiene ND ND ND ND ND 24 μg/m3
Isopropylbenzene ND ND ND ND ND 8 μg/m3
4-Isopropyltoluene ND ND ND ND ND 8 μg/m3
Methylene chloride ND ND ND ND ND 8 μg/m3
Naphthalene ND ND ND ND ND 40 μg/m3
n-Propylbenzene ND ND ND ND ND 8 μg/m3
Styrene ND ND ND ND ND 8 μg/m3
1,1,1,2-Tetrachloroethane ND ND ND ND ND 8 μg/m3
1,1,2,2-Tetrachloroethane ND ND ND ND ND 16 μg/m3
Tetrachloroethene ND 10 ND 37 29 8 μg/m3
Toluene ND ND ND ND ND 8 μg/m3
1,2,3-Trichlorobenzene ND ND ND ND ND 16 μg/m3
1,2,4-Trichlorobenzene ND ND ND ND ND 16 μg/m3
1,1,1-Trichloroethane ND ND ND ND ND 8 μg/m3
1,1,2-Trichloroethane ND ND ND ND ND 8 μg/m3
Trichloroethene ND ND ND ND ND 8 μg/m3
Trichlorofluoromethane ND ND ND ND ND 32 μg/m3
1,2,3-Trichloropropane ND ND ND ND ND 8 μg/m3
1,2,4-Trimethylbenzene ND ND ND ND ND 8 μg/m3
1,3,5-Trimethylbenzene ND ND ND ND ND 8 μg/m3
Vinyl chloride ND ND ND ND ND 8 μg/m3
m,p-Xylene ND ND ND ND ND 16 μg/m3
o-Xylene ND ND ND ND ND 8 μg/m3
MTBE ND ND ND ND ND 40 μg/m3
Ethyl-tert-butylether ND ND ND ND ND 40 μg/m3
Di-isopropylether ND ND ND ND ND 40 μg/m3
tert-amylmethylether ND ND ND ND ND 40 μg/m3
tert-Butylalcohol ND ND ND ND ND 400 μg/m3
Gasoline Range Organics (C4-C12) ND ND ND ND ND 2000 μg/m3 Tracer:
n-Pentane ND ND ND ND ND 80 μg/m3
n-Hexane ND ND ND ND ND 80 μg/m3
n-Heptane ND ND ND ND ND 80 μg/m3
Dilution Factor 1 1 1 1 1
Surrogate Recoveries:
Dibromofluoromethane 126%^ 108% 123%^ 105% 119%^
Toluene-d₈ 106% 85% 102% 86% 101%
4-Bromofluorobenzene 106% 98% 104% 95% 82%
Batch ID: E2-072821-
01 E3-072821-
01 E2-072821-
01 E3-072821-
01 E2-072821-
01 ND = Value below reporting limit
^ = 1,2-dichloroethane-d4 used as surrogate for this batch. 60 - 140
60 - 140
60 - 140
JONES ENVIRONMENTAL LABORATORY RESULTS
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics Reporting Limit Units
QC Limits
Client: Report date: 7/28/2021
Client Address: Jones Ref. No.: E-1173
Attn: Date Sampled: 7/28/2021
Date Received: 7/28/2021
Project: Date Analyzed: 7/28/2021
Project Address: Physical State: Soil Gas
Sample ID: SV16-5' SV16-15' SV17-5' SV17-15' SV18-5'
Jones ID: E-1173-16 E-1173-17 E-1173-18 E-1173-19 E-1173-20 Analytes:
Benzene ND 27 ND ND ND 8 μg/m3
Bromobenzene ND ND ND ND ND 8 μg/m3
Bromodichloromethane ND ND ND ND ND 8 μg/m3
Bromoform ND ND ND ND ND 8 μg/m3
n-Butylbenzene ND ND ND ND ND 12 μg/m3
sec-Butylbenzene ND ND ND ND ND 12 μg/m3
tert-Butylbenzene ND ND ND ND ND 12 μg/m3
Carbon tetrachloride ND ND ND ND ND 8 μg/m3
Chlorobenzene ND ND ND ND ND 8 μg/m3
Chloroform ND ND ND ND ND 8 μg/m3
2-Chlorotoluene ND ND ND ND ND 12 μg/m3
4-Chlorotoluene ND ND ND ND ND 12 μg/m3
Dibromochloromethane ND ND ND ND ND 8 μg/m3
1,2-Dibromo-3-chloropropane ND ND ND ND ND 8 μg/m3
1,2-Dibromoethane (EDB) ND ND ND ND ND 8 μg/m3
Dibromomethane ND ND ND ND ND 8 μg/m3
1,2- Dichlorobenzene ND ND ND ND ND 16 μg/m3
1,3-Dichlorobenzene ND ND ND ND ND 16 μg/m3
1,4-Dichlorobenzene ND ND ND ND ND 16 μg/m3
Dichlorodifluoromethane ND ND ND ND ND 32 μg/m3
1,1-Dichloroethane ND ND ND ND ND 8 μg/m3
1,2-Dichloroethane ND ND ND ND ND 8 μg/m3
1,1-Dichloroethene ND ND ND ND ND 8 μg/m3
cis-1,2-Dichloroethene ND 51 ND ND ND 8 μg/m3
trans-1,2-Dichloroethene ND ND ND ND ND 8 μg/m3
1,2-Dichloropropane ND ND ND ND ND 8 μg/m3
1,3-Dichloropropane ND ND ND ND ND 8 μg/m3
2,2-Dichloropropane ND ND ND ND ND 16 μg/m3
1,1-Dichloropropene ND ND ND ND ND 10 μg/m3
Reporting Limit Units
Susan L Mearns PhD
Town Center Northwest
2690 Walnut Ave
Signal Hill, CA
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics
JONES ENVIRONMENTAL LABORATORY RESULTS
Mearns Consulting Group
738 Ashland Avenue,
Santa Monica CA 90405
Sample ID: SV16-5' SV16-15' SV17-5' SV17-15' SV18-5'
Jones ID: E-1173-16 E-1173-17 E-1173-18 E-1173-19 E-1173-20 Analytes:
cis-1,3-Dichloropropene ND ND ND ND ND 8 μg/m3
trans-1,3-Dichloropropene ND ND ND ND ND 8 μg/m3
Ethylbenzene ND 74 ND ND ND 8 μg/m3
Freon 113 ND ND ND ND ND 16 μg/m3
Hexachlorobutadiene ND ND ND ND ND 24 μg/m3
Isopropylbenzene ND ND ND ND ND 8 μg/m3
4-Isopropyltoluene ND 16 ND ND ND 8 μg/m3
Methylene chloride ND ND ND ND ND 8 μg/m3
Naphthalene ND 41 ND ND ND 40 μg/m3
n-Propylbenzene ND ND ND ND ND 8 μg/m3
Styrene ND ND ND ND ND 8 μg/m3
1,1,1,2-Tetrachloroethane ND ND ND ND ND 8 μg/m3
1,1,2,2-Tetrachloroethane ND ND ND ND ND 16 μg/m3
Tetrachloroethene 15 18 32 10 13 8 μg/m3
Toluene ND 44 ND ND ND 8 μg/m3
1,2,3-Trichlorobenzene ND ND ND ND ND 16 μg/m3
1,2,4-Trichlorobenzene ND ND ND ND ND 16 μg/m3
1,1,1-Trichloroethane ND ND ND ND ND 8 μg/m3
1,1,2-Trichloroethane ND ND ND ND ND 8 μg/m3
Trichloroethene ND ND ND ND ND 8 μg/m3
Trichlorofluoromethane ND ND ND ND ND 32 μg/m3
1,2,3-Trichloropropane ND ND ND ND ND 8 μg/m3
1,2,4-Trimethylbenzene ND ND ND ND ND 8 μg/m3
1,3,5-Trimethylbenzene ND ND ND ND ND 8 μg/m3
Vinyl chloride ND ND ND ND ND 8 μg/m3
m,p-Xylene ND 287 ND ND ND 16 μg/m3
o-Xylene ND 84 ND ND ND 8 μg/m3
MTBE ND ND ND ND ND 40 μg/m3
Ethyl-tert-butylether ND ND ND ND ND 40 μg/m3
Di-isopropylether ND ND ND ND ND 40 μg/m3
tert-amylmethylether ND ND ND ND ND 40 μg/m3
tert-Butylalcohol ND ND ND ND ND 400 μg/m3
Gasoline Range Organics (C4-C12) ND 46800 ND ND ND 2000 μg/m3 Tracer:
n-Pentane ND ND ND ND ND 80 μg/m3
n-Hexane ND ND ND ND ND 80 μg/m3
n-Heptane ND ND ND ND ND 80 μg/m3
Dilution Factor 1 1 1 1 1
Surrogate Recoveries:
Dibromofluoromethane 112% 124%^ 108% 121%^ 106%
Toluene-d₈ 86% 101% 85% 99% 86%
4-Bromofluorobenzene 97% 114% 96% 104% 97%
Batch ID: E3-072821-
01 E2-072821-
01 E3-072821-
01 E2-072821-
01 E3-072821-
01 60 - 140
ND = Value below reporting limit
^ = 1,2-dichloroethane-d4 used as surrogate for this batch.
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics Reporting Limit Units
QC Limits
60 - 140
60 - 140
JONES ENVIRONMENTAL LABORATORY RESULTS
Client: Report date: 7/28/2021
Client Address: Jones Ref. No.: E-1173
Attn: Date Sampled: 7/28/2021
Date Received: 7/28/2021
Project: Date Analyzed: 7/28/2021
Project Address: Physical State: Soil Gas
Sample ID: SV18-15' SV19-5'
Jones ID: E-1173-21 E-1173-22 - -
Analytes:
Benzene 1150 18 ND ND ND 8 μg/m3
Bromobenzene ND ND ND ND ND 8 μg/m3
Bromodichloromethane ND ND ND ND ND 8 μg/m3
Bromoform ND ND ND ND ND 8 μg/m3
n-Butylbenzene ND 649 ND ND ND 12 μg/m3
sec-Butylbenzene ND 2380 ND ND ND 12 μg/m3
tert-Butylbenzene ND ND ND ND ND 12 μg/m3
Carbon tetrachloride ND ND ND ND ND 8 μg/m3
Chlorobenzene ND ND ND ND ND 8 μg/m3
Chloroform ND ND ND ND ND 8 μg/m3
2-Chlorotoluene ND ND ND ND ND 12 μg/m3
4-Chlorotoluene ND ND ND ND ND 12 μg/m3
Dibromochloromethane ND ND ND ND ND 8 μg/m3
1,2-Dibromo-3-chloropropane ND ND ND ND ND 8 μg/m3
1,2-Dibromoethane (EDB) ND ND ND ND ND 8 μg/m3
Dibromomethane ND ND ND ND ND 8 μg/m3
1,2- Dichlorobenzene ND ND ND ND ND 16 μg/m3
1,3-Dichlorobenzene ND ND ND ND ND 16 μg/m3
1,4-Dichlorobenzene ND ND ND ND ND 16 μg/m3
Dichlorodifluoromethane ND ND ND ND ND 32 μg/m3
1,1-Dichloroethane ND ND ND ND ND 8 μg/m3
1,2-Dichloroethane ND ND ND ND ND 8 μg/m3
1,1-Dichloroethene ND ND ND ND ND 8 μg/m3
cis-1,2-Dichloroethene ND ND ND ND ND 8 μg/m3
trans-1,2-Dichloroethene ND ND ND ND ND 8 μg/m3
1,2-Dichloropropane ND ND ND ND ND 8 μg/m3
1,3-Dichloropropane ND ND ND ND ND 8 μg/m3
2,2-Dichloropropane ND ND ND ND ND 16 μg/m3
1,1-Dichloropropene ND ND ND ND ND 10 μg/m3
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics
JONES ENVIRONMENTAL LABORATORY RESULTS
Mearns Consulting Group
738 Ashland Avenue,
Santa Monica CA 90405
Susan L Mearns PhD
Town Center Northwest
2690 Walnut Ave
Signal Hill, CA
Reporting Limit Units
Sample ID: SV18-15' SV19-5'
Jones ID: E-1173-21 E-1173-22 - -
Analytes:
cis-1,3-Dichloropropene ND ND ND ND ND 8 μg/m3
trans-1,3-Dichloropropene ND ND ND ND ND 8 μg/m3
Ethylbenzene 1910 2730 ND ND ND 8 μg/m3
Freon 113 ND ND ND ND ND 16 μg/m3
Hexachlorobutadiene ND ND ND ND ND 24 μg/m3
Isopropylbenzene 2490 4290 ND ND ND 8 μg/m3
4-Isopropyltoluene ND 13 ND ND ND 8 μg/m3
Methylene chloride ND ND ND ND ND 8 μg/m3
Naphthalene 826 405 ND ND ND 40 μg/m3
n-Propylbenzene 2640 5810 ND ND ND 8 μg/m3
Styrene ND ND ND ND ND 8 μg/m3
1,1,1,2-Tetrachloroethane ND ND ND ND ND 8 μg/m3
1,1,2,2-Tetrachloroethane ND ND ND ND ND 16 μg/m3
Tetrachloroethene ND 42 ND ND ND 8 μg/m3
Toluene ND 25 ND ND ND 8 μg/m3
1,2,3-Trichlorobenzene ND ND ND ND ND 16 μg/m3
1,2,4-Trichlorobenzene ND ND ND ND ND 16 μg/m3
1,1,1-Trichloroethane ND ND ND ND ND 8 μg/m3
1,1,2-Trichloroethane ND ND ND ND ND 8 μg/m3
Trichloroethene ND ND ND ND ND 8 μg/m3
Trichlorofluoromethane ND ND ND ND ND 32 μg/m3
1,2,3-Trichloropropane ND ND ND ND ND 8 μg/m3
1,2,4-Trimethylbenzene ND ND ND ND ND 8 μg/m3
1,3,5-Trimethylbenzene ND ND ND ND ND 8 μg/m3
Vinyl chloride ND ND ND ND ND 8 μg/m3
m,p-Xylene 1720 ND ND ND ND 16 μg/m3
o-Xylene ND ND ND ND ND 8 μg/m3
MTBE 8610 121000* ND ND ND 40 μg/m3
Ethyl-tert-butylether ND ND ND ND ND 40 μg/m3
Di-isopropylether 4780 ND ND ND ND 40 μg/m3
tert-amylmethylether ND ND ND ND ND 40 μg/m3
tert-Butylalcohol ND ND ND ND ND 400 μg/m3
Gasoline Range Organics (C4-C12) 3380000 900000 ND ND ND 2000 μg/m3 Tracer:
n-Pentane ND ND ND ND ND 80 μg/m3
n-Hexane ND ND ND ND ND 80 μg/m3
n-Heptane ND ND ND ND ND 80 μg/m3
Dilution Factor 12.5 1/3* 1 1 1
Surrogate Recoveries:
Dibromofluoromethane 115% 103%
Toluene-d₈ 106% 115%
4-Bromofluorobenzene 123% ●
Batch ID: E2-072721-
01 E3-072721-
01 E2-072721-
01 E3-072721-
01 * = Dilutions for these compound(s); first number for all others 60 - 140
60 - 140
60 - 140
ND = Value below reporting limit
JONES ENVIRONMENTAL LABORATORY RESULTS
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics Reporting Limit Units
QC Limits
^ = 1,2-dichloroethane-d4 used as surrogate for this batch. ● = Hydrocarbon interference prevented adequate surrogate recovery.
Client: Report date: 7/28/2021
Client Address: Jones Ref. No.: E-1173
Attn: Date Sampled: 7/28/2021
Date Received: 7/28/2021
Project: Date Analyzed: 7/28/2021
Project Address: Physical State: Soil Gas
Sample ID: METHOD
BLANK
SAMPLING
BLANK
METHOD
BLANK
SAMPLING
BLANK
Jones ID: 072821-
E2MB1
072821-
E2SB1
072821-
E3MB1
072821-
E3SB1
Analytes:
Benzene ND ND ND ND 8 μg/m3
Bromobenzene ND ND ND ND 8 μg/m3
Bromodichloromethane ND ND ND ND 8 μg/m3
Bromoform ND ND ND ND 8 μg/m3
n-Butylbenzene ND ND ND ND 12 μg/m3
sec-Butylbenzene ND ND ND ND 12 μg/m3
tert-Butylbenzene ND ND ND ND 12 μg/m3
Carbon tetrachloride ND ND ND ND 8 μg/m3
Chlorobenzene ND ND ND ND 8 μg/m3
Chloroform ND ND ND ND 8 μg/m3
2-Chlorotoluene ND ND ND ND 12 μg/m3
4-Chlorotoluene ND ND ND ND 12 μg/m3
Dibromochloromethane ND ND ND ND 8 μg/m3
1,2-Dibromo-3-chloropropane ND ND ND ND 8 μg/m3
1,2-Dibromoethane (EDB) ND ND ND ND 8 μg/m3
Dibromomethane ND ND ND ND 8 μg/m3
1,2- Dichlorobenzene ND ND ND ND 16 μg/m3
1,3-Dichlorobenzene ND ND ND ND 16 μg/m3
1,4-Dichlorobenzene ND ND ND ND 16 μg/m3
Dichlorodifluoromethane ND ND ND ND 32 μg/m3
1,1-Dichloroethane ND ND ND ND 8 μg/m3
1,2-Dichloroethane ND ND ND ND 8 μg/m3
1,1-Dichloroethene ND ND ND ND 8 μg/m3
cis-1,2-Dichloroethene ND ND ND ND 8 μg/m3
trans-1,2-Dichloroethene ND ND ND ND 8 μg/m3
1,2-Dichloropropane ND ND ND ND 8 μg/m3
1,3-Dichloropropane ND ND ND ND 8 μg/m3
2,2-Dichloropropane ND ND ND ND 16 μg/m3
1,1-Dichloropropene ND ND ND ND 10 μg/m3
JONES ENVIRONMENTAL QUALITY CONTROL INFORMATION
Mearns Consulting Group
738 Ashland Avenue,
Santa Monica CA 90405
2690 Walnut Ave
Signal Hill, CA
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics Susan L Mearns PhD
Town Center Northwest
Reporting Limit Units
Sample ID: METHOD
BLANK
SAMPLING
BLANK
METHOD
BLANK
SAMPLING
BLANK
Jones ID: 072821-
E2MB1
072821-
E2SB1
072821-
E3MB1
072821-
E3SB1
Analytes:
cis-1,3-Dichloropropene ND ND ND ND 8 μg/m3
trans-1,3-Dichloropropene ND ND ND ND 8 μg/m3
Ethylbenzene ND ND ND ND 8 μg/m3
Freon 113 ND ND ND ND 16 μg/m3
Hexachlorobutadiene ND ND ND ND 24 μg/m3
Isopropylbenzene ND ND ND ND 8 μg/m3
4-Isopropyltoluene ND ND ND ND 8 μg/m3
Methylene chloride ND ND ND ND 8 μg/m3
Naphthalene ND ND ND ND 40 μg/m3
n-Propylbenzene ND ND ND ND 8 μg/m3
Styrene ND ND ND ND 8 μg/m3
1,1,1,2-Tetrachloroethane ND ND ND ND 8 μg/m3
1,1,2,2-Tetrachloroethane ND ND ND ND 16 μg/m3
Tetrachloroethene ND ND ND ND 8 μg/m3
Toluene ND ND ND ND 8 μg/m3
1,2,3-Trichlorobenzene ND ND ND ND 16 μg/m3
1,2,4-Trichlorobenzene ND ND ND ND 16 μg/m3
1,1,1-Trichloroethane ND ND ND ND 8 μg/m3
1,1,2-Trichloroethane ND ND ND ND 8 μg/m3
Trichloroethene ND ND ND ND 8 μg/m3
Trichlorofluoromethane ND ND ND ND 32 μg/m3
1,2,3-Trichloropropane ND ND ND ND 8 μg/m3
1,2,4-Trimethylbenzene ND ND ND ND 8 μg/m3
1,3,5-Trimethylbenzene ND ND ND ND 8 μg/m3
Vinyl chloride ND ND ND ND 8 μg/m3
m,p-Xylene ND ND ND ND 16 μg/m3
o-Xylene ND ND ND ND 8 μg/m3
MTBE ND ND ND ND 40 μg/m3
Ethyl-tert-butylether ND ND ND ND 40 μg/m3
Di-isopropylether ND ND ND ND 40 μg/m3
tert-amylmethylether ND ND ND ND 40 μg/m3
tert-Butylalcohol ND ND ND ND 400 μg/m3
Gasoline Range Organics (C4-C12) ND ND ND ND 2000 μg/m3 Tracer:
n-Pentane ND ND ND ND 80 μg/m3
n-Hexane ND ND ND ND 80 μg/m3
n-Heptane ND ND ND ND 80 μg/m3
Dilution Factor 1 1 1 1
Surrogate Recoveries:
Dibromofluoromethane 121%^ 114%^ 105% 100%
Toluene-d₈ 100% 104% 93% 90%
4-Bromofluorobenzene 106% 107% 98% 96%
Batch ID: E2-072821-
01 E2-072821-
01 E3-072721-
01 E3-072721-
01 ND = Value below reporting limit
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics Reporting Limit Units
^ = 1,2-dichloroethane-d4 used as surrogate for this batch. 60 - 140
JONES ENVIRONMENTAL QUALITY CONTROL INFORMATION
60 - 140
60 - 140
QC Limits
Client: 7/28/2021
Client Address: E-1173
Attn: 7/28/2021
7/28/2021
Project: 7/28/2021
Project Address: Soil Gas
Batch ID:
Jones ID:
Parameter RPD
Acceptability
Range (%) CCV
Acceptability
Range (%)
Vinyl chloride 6.2% 60 - 140 50%1
80 - 120
1,1-Dichloroethene 3.7% 60 - 140 103% 80 - 120
Cis-1,2-Dichloroethene 4.0% 70 - 130 106% 80 - 120
1,1,1-Trichloroethane 2.5% 70 - 130 112% 80 - 120
Benzene 4.4% 70 - 130 110% 80 - 120
Trichloroethene 5.9% 70 - 130 103% 80 - 120
Toluene 6.8% 70 - 130 116% 80 - 120
Tetrachloroethene 3.9% 70 - 130 120% 80 - 120
Chlorobenzene 2.3% 70 - 130 96% 80 - 120
Ethylbenzene 6.3% 70 - 130 87% 80 - 120
1,2,4 Trimethylbenzene 3.1% 70 - 130 118% 80 - 120
Gasoline Range Organics (C4-C12) 5.0% 70 - 130 108% 80 - 120 Surrogate Recovery:
1,2-Dichloroethane-d4 60 - 140 110% 60 - 140
Toluene-d₈ 60 - 140 102% 60 - 140
4-Bromofluorobenzene 60 - 140 108% 60 - 140
072821-E2CCV1
129%
106%
124%
124% 121%
129%
Town Center Northwest Date Analyzed:
2690 Walnut Ave
Date Received:
LCSD = Laboratory Control Sample Duplicate
RPD = Relative Percent Difference; Acceptability range for RPD is ≤ 20% 1Recovery outside of acceptable limits. If compound was found in sample, the sample would have been re-ran for confirmation.
LCS = Laboratory Control Sample
2Recovery outside of acceptable limits. CCV and LCS recoveries and LCS/LCSD RPD were within QC limits, therefore data was accepted. 120% 119%
102%
105% 105%
109% 115%
134%2
78%
Mearns Consulting Group Report date:
738 Ashland Avenue,
Susan L Mearns PhD
JONES ENVIRONMENTAL QUALITY CONTROL INFORMATION
Jones Ref. No.:
Date Sampled:
Santa Monica CA 90405
Physical State:
LCS
Recovery (%)
LCSD
Recovery (%)
112%
101%
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics 072821-E2LCS1 072821-E2LCSD1
124%
Signal Hill, CA
E2-072821-01
CCV = Continuing Calibration Verification
142%1
121%
119%
120% 128%
123%
83%
151%1
126%
99% 101%
119%
Client: 7/28/2021
Client Address: E-1173
Attn: 7/28/2021
7/28/2021
Project: 7/28/2021
Project Address: Soil Gas
QC ID:
Jones ID:
Parameter RPD
Acceptability
Range (%) CCV
Acceptability
Range (%)
Vinyl chloride 2.2% 60 - 140 100% 80 - 120
1,1-Dichloroethene 8.9% 60 - 140 94% 80 - 120
Cis-1,2-Dichloroethene 1.8% 70 - 130 101% 80 - 120
1,1,1-Trichloroethane 2.4% 70 - 130 99% 80 - 120
Benzene 0.3% 70 - 130 118% 80 - 120
Trichloroethene 12.1% 70 - 130 109% 80 - 120
Toluene 1.6% 70 - 130 105% 80 - 120
Tetrachloroethene 5.8% 70 - 130 103% 80 - 120
Chlorobenzene 0.7% 70 - 130 112% 80 - 120
Ethylbenzene 4.3% 70 - 130 106% 80 - 120
1,2,4 Trimethylbenzene 0.3% 70 - 130 99% 80 - 120
Gasoline Range Organics (C4-C12) 1.4% 70 - 130 107% 80 - 120 Surrogate Recovery:
Dibromofluoromethane 60 - 140 100% 60 - 140
Toluene-d₈ 60 - 140 93% 60 - 140
4-Bromofluorobenzene 60 - 140 98% 60 - 140
072821-E3CCV1
RPD = Relative Percent Difference; Acceptability range for RPD is ≤ 20% LCS = Laboratory Control Sample
LCSD = Laboratory Control Sample Duplicate
CCV = Continuing Calibration Verification
100% 102%
94% 94%
97% 100%
103% 99%
91% 91%
106% 104%
103%
106% 112%
110% 109%
83% 81%
110% 101%
111% 109%
100% 98%
124% 124%
126% 112%
104%
E3-072821-01
072821-E3LCS1 072821-E3LCSD1
LCS
Recovery (%)
LCSD
Recovery (%)
2690 Walnut Ave Physical State:
Signal Hill, CA
EPA 8260B – Volatile Organics by GC/MS + Oxygenates/Gasoline Range Organics Susan L Mearns PhD Date Sampled:
Date Received:
Town Center Northwest Date Analyzed:
738 Ashland Avenue, Jones Ref. No.:
Santa Monica CA 90405
JONES ENVIRONMENTAL QUALITY CONTROL INFORMATION
Mearns Consulting Group Report date:
APPENDIX D
Boring Logs
APPENDIX E
Metals Statistical Analyses
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
TW Statistic -2.699
TW Critical Value (0.05) 1.645
P-Value 0.997
Sample 1 vs Sample 2 Tarone-Ware Test
H0: Mean/Median of Sample 1 <= Mean/Median of Sample 2
KM Mean 5.754 6.693
KM SD 1.904 3.016
Median of Detects 20 12
SD of Detects N/A 3.851
Maximum Detect 20 14
Mean of Detects 20 10.8
Percent Non-detects 98.25% 73.33%
Minimum Detect 20 5.2
Minimum Non-Detect 5.5 5.5
Maximum Non-Detect 5.5 5.5
Number of Non-Detects 56 11
Number of Detects 1 4
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: As
Sample 2 Data: Bkgrnd As
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Tarone-Ware Sample 1 vs Sample 2 Comparison Hypothesis Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:47:43 AM 1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
Approximate U-Stat Critical Value (0.05) 1.645
P-Value (Adjusted for Ties) 0.996
Standardized WMW U-Stat -2.69
Mean (U) 427.5
SD(U) - Adj ties 72.12
Wilcoxon-Mann-Whitney (WMW) Test
H0: Mean/Median of Sample 1 <= Mean/Median of Sample 2
Sample 1 Rank Sum W-Stat 2004
WMW test is meant for a Single Detection Limit Case
Use of Gehan or T-W test is suggested when multiple detection limits are present All observations <= 5.5 (Max DL) are ranked the same
Median of Detects 20 12
SD of Detects N/A 3.851
Maximum Detect 20 14
Mean of Detects 20 10.8
Percent Non-detects 98.25% 73.33%
Minimum Detect 20 5.2
Minimum Non-Detect 5.5 5.5
Maximum Non-Detect 5.5 5.5
Number of Non-Detects 56 11
Number of Detect Data 1 4
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: As
Sample 2 Data: Bkgrnd As
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Wilcoxon-Mann-Whitney Sample 1 vs Sample 2 Comparison Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:48:12 AM 1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
Gehan z Test Value -2.672
Critical z (0.05) 1.645
P-Value 0.996
Sample 1 vs Sample 2 Gehan Test
H0: Mean/Median of Sample 1 <= Mean/Median of background KM Mean 5.754 6.693
KM SD 1.904 3.016
Median of Detects 20 12
SD of Detects N/A 3.851
Maximum Detect 20 14
Mean of Detects 20 10.8
Percent Non-detects 98.25% 73.33%
Minimum Detect 20 5.2
Minimum Non-Detect 5.5 5.5
Maximum Non-Detect 5.5 5.5
Number of Non-Detects 56 11
Number of Detect Data 1 4
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: As
Sample 2 Data: Bkgrnd As
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Gehan Sample 1 vs Sample 2 Comparison Hypothesis Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:46:30 AM
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
Gehan z Test Value -2.655
Critical z (0.05) 1.645
P-Value 0.996
Sample 1 vs Sample 2 Gehan Test
H0: Mean/Median of Sample 1 <= Mean/Median of background KM Mean 151.1 110.9
KM SD 415.1 41.89
Median of Detects 74 97
SD of Detects 415.1 41.89
Maximum Detect 3100 180
Mean of Detects 151.1 110.9
Percent Non-detects 0.00% 0.00%
Minimum Detect 26 48
Minimum Non-Detect N/A N/A
Maximum Non-Detect N/A N/A
Number of Non-Detects 0 0
Number of Detect Data 57 15
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: Ba
Sample 2 Data: Bkgrnd Ba
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Gehan Sample 1 vs Sample 2 Comparison Hypothesis Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:50:43 AM
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
TW Statistic -3.113
TW Critical Value (0.05) 1.645
P-Value 0.999
Sample 1 vs Sample 2 Tarone-Ware Test
H0: Mean/Median of Sample 1 <= Mean/Median of Sample 2
KM Mean 151.1 110.9
KM SD 415.1 41.89
Median of Detects 74 97
SD of Detects 415.1 41.89
Maximum Detect 3100 180
Mean of Detects 151.1 110.9
Percent Non-detects 0.00% 0.00%
Minimum Detect 26 48
Minimum Non-Detect N/A N/A
Maximum Non-Detect N/A N/A
Number of Non-Detects 0 0
Number of Detects 57 15
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: Ba
Sample 2 Data: Bkgrnd Ba
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Tarone-Ware Sample 1 vs Sample 2 Comparison Hypothesis Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:51:09 AM 1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
SD(U) - Adj ties 72.1
Approximate U-Stat Critical Value (0.05) 1.645
P-Value (Adjusted for Ties) 0.996
Sample 1 Rank Sum W-Stat 1892
Standardized WMW U-Stat -2.622
Mean (U) 427.5
Wilcoxon-Mann-Whitney (WMW) Test
H0: Mean/Median of Sample 1 <= Mean/Median of Sample 2
Median of Detects 74 97
SD of Detects 415.1 41.89
Maximum Detect 3100 180
Mean of Detects 151.1 110.9
Percent Non-detects 0.00% 0.00%
Minimum Detect 26 48
Minimum Non-Detect N/A N/A
Maximum Non-Detect N/A N/A
Number of Non-Detects 0 0
Number of Detect Data 57 15
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: Ba
Sample 2 Data: Bkgrnd Ba
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Wilcoxon-Mann-Whitney Sample 1 vs Sample 2 Comparison Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:51:36 AM
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
Gehan z Test Value -4.818
Critical z (0.05) 1.645
P-Value 1
Sample 1 vs Sample 2 Gehan Test
H0: Mean/Median of Sample 1 <= Mean/Median of background KM Mean 6.675 13.25
KM SD 2.399 4.339
Median of Detects 6.4 14
SD of Detects 2.374 4.339
Maximum Detect 16 22
Mean of Detects 6.798 13.25
Percent Non-detects 3.51% 0.00%
Minimum Detect 3.3 4.6
Minimum Non-Detect 3.3 N/A
Maximum Non-Detect 3.3 N/A
Number of Non-Detects 2 0
Number of Detect Data 55 15
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: Co
Sample 2 Data: Bkgrnd Co
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Gehan Sample 1 vs Sample 2 Comparison Hypothesis Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:53:47 AM
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
TW Statistic -6.311
TW Critical Value (0.05) 1.645
P-Value 1
Sample 1 vs Sample 2 Tarone-Ware Test
H0: Mean/Median of Sample 1 <= Mean/Median of Sample 2
KM Mean 6.675 13.25
KM SD 2.399 4.339
Median of Detects 6.4 14
SD of Detects 2.374 4.339
Maximum Detect 16 22
Mean of Detects 6.798 13.25
Percent Non-detects 3.51% 0.00%
Minimum Detect 3.3 4.6
Minimum Non-Detect 3.3 N/A
Maximum Non-Detect 3.3 N/A
Number of Non-Detects 2 0
Number of Detects 55 15
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: Co
Sample 2 Data: Bkgrnd Co
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Tarone-Ware Sample 1 vs Sample 2 Comparison Hypothesis Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:54:12 AM 1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
SD(U) - Adj ties 72.09
Approximate U-Stat Critical Value (0.05) 1.645
P-Value (Adjusted for Ties) 1
Sample 1 Rank Sum W-Stat 1737
Standardized WMW U-Stat -4.772
Mean (U) 427.5
Wilcoxon-Mann-Whitney (WMW) Test
H0: Mean/Median of Sample 1 <= Mean/Median of Sample 2
Median of Detects 6.4 14
SD of Detects 2.374 4.339
Maximum Detect 16 22
Mean of Detects 6.798 13.25
Percent Non-detects 3.51% 0.00%
Minimum Detect 3.3 4.6
Minimum Non-Detect 3.3 N/A
Maximum Non-Detect 3.3 N/A
Number of Non-Detects 2 0
Number of Detect Data 55 15
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: Co
Sample 2 Data: Bkgrnd Co
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Wilcoxon-Mann-Whitney Sample 1 vs Sample 2 Comparison Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:54:40 AM
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
Gehan z Test Value -4.985
Critical z (0.05) 1.645
P-Value 1
Sample 1 vs Sample 2 Gehan Test
H0: Mean/Median of Sample 1 <= Mean/Median of background KM Mean 14.33 36.8
KM SD 8.275 17.38
Median of Detects 12 35
SD of Detects 8.303 17.38
Maximum Detect 47 80
Mean of Detects 14.67 36.8
Percent Non-detects 3.51% 0.00%
Minimum Detect 6.2 14
Minimum Non-Detect 5 N/A
Maximum Non-Detect 5 N/A
Number of Non-Detects 2 0
Number of Detect Data 55 15
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: Cu
Sample 2 Data: Bkgrnd Cu
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Gehan Sample 1 vs Sample 2 Comparison Hypothesis Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 11:00:48 AM
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
TW Statistic -6.986
TW Critical Value (0.05) 1.645
P-Value 1
Sample 1 vs Sample 2 Tarone-Ware Test
H0: Mean/Median of Sample 1 <= Mean/Median of Sample 2
KM Mean 14.33 36.8
KM SD 8.275 17.38
Median of Detects 12 35
SD of Detects 8.303 17.38
Maximum Detect 47 80
Mean of Detects 14.67 36.8
Percent Non-detects 3.51% 0.00%
Minimum Detect 6.2 14
Minimum Non-Detect 5 N/A
Maximum Non-Detect 5 N/A
Number of Non-Detects 2 0
Number of Detects 55 15
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: Cu
Sample 2 Data: Bkgrnd Cu
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Tarone-Ware Sample 1 vs Sample 2 Comparison Hypothesis Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 11:01:15 AM 1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
SD(U) - Adj ties 72.05
Approximate U-Stat Critical Value (0.05) 1.645
P-Value (Adjusted for Ties) 1
Sample 1 Rank Sum W-Stat 1726
Standardized WMW U-Stat -4.934
Mean (U) 427.5
Wilcoxon-Mann-Whitney (WMW) Test
H0: Mean/Median of Sample 1 <= Mean/Median of Sample 2
Median of Detects 12 35
SD of Detects 8.303 17.38
Maximum Detect 47 80
Mean of Detects 14.67 36.8
Percent Non-detects 3.51% 0.00%
Minimum Detect 6.2 14
Minimum Non-Detect 5 N/A
Maximum Non-Detect 5 N/A
Number of Non-Detects 2 0
Number of Detect Data 55 15
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: Cu
Sample 2 Data: Bkgrnd Cu
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Wilcoxon-Mann-Whitney Sample 1 vs Sample 2 Comparison Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 11:01:41 AM
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
Gehan z Test Value -4.874
Critical z (0.05) 1.645
P-Value 1
Sample 1 vs Sample 2 Gehan Test
H0: Mean/Median of Sample 1 <= Mean/Median of background KM Mean 9.925 21.88
KM SD 4.284 7.442
Median of Detects 8.8 22
SD of Detects 4.284 7.442
Maximum Detect 24 33
Mean of Detects 9.925 21.88
Percent Non-detects 0.00% 0.00%
Minimum Detect 3.6 6.2
Minimum Non-Detect N/A N/A
Maximum Non-Detect N/A N/A
Number of Non-Detects 0 0
Number of Detect Data 57 15
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: Ni
Sample 2 Data: Bkgrnd Ni
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Gehan Sample 1 vs Sample 2 Comparison Hypothesis Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 11:02:04 AM
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
TW Statistic -6.342
TW Critical Value (0.05) 1.645
P-Value 1
Sample 1 vs Sample 2 Tarone-Ware Test
H0: Mean/Median of Sample 1 <= Mean/Median of Sample 2
KM Mean 9.925 21.88
KM SD 4.284 7.442
Median of Detects 8.8 22
SD of Detects 4.284 7.442
Maximum Detect 24 33
Mean of Detects 9.925 21.88
Percent Non-detects 0.00% 0.00%
Minimum Detect 3.6 6.2
Minimum Non-Detect N/A N/A
Maximum Non-Detect N/A N/A
Number of Non-Detects 0 0
Number of Detects 57 15
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: Ni
Sample 2 Data: Bkgrnd Ni
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Tarone-Ware Sample 1 vs Sample 2 Comparison Hypothesis Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 11:02:31 AM 1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
SD(U) - Adj ties 72.04
Approximate U-Stat Critical Value (0.05) 1.645
P-Value (Adjusted for Ties) 1
Sample 1 Rank Sum W-Stat 1737
Standardized WMW U-Stat -4.782
Mean (U) 427.5
Wilcoxon-Mann-Whitney (WMW) Test
H0: Mean/Median of Sample 1 <= Mean/Median of Sample 2
Median of Detects 8.8 22
SD of Detects 4.284 7.442
Maximum Detect 24 33
Mean of Detects 9.925 21.88
Percent Non-detects 0.00% 0.00%
Minimum Detect 3.6 6.2
Minimum Non-Detect N/A N/A
Maximum Non-Detect N/A N/A
Number of Non-Detects 0 0
Number of Detect Data 57 15
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: Ni
Sample 2 Data: Bkgrnd Ni
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Wilcoxon-Mann-Whitney Sample 1 vs Sample 2 Comparison Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 11:02:53 AM
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
Gehan z Test Value -4.749
Critical z (0.05) 1.645
P-Value 1
Sample 1 vs Sample 2 Gehan Test
H0: Mean/Median of Sample 1 <= Mean/Median of background KM Mean 15.88 30.6
KM SD 5.966 10.43
Median of Detects 15 30
SD of Detects 5.966 10.43
Maximum Detect 35 50
Mean of Detects 15.88 30.6
Percent Non-detects 0.00% 0.00%
Minimum Detect 5.7 9
Minimum Non-Detect N/A N/A
Maximum Non-Detect N/A N/A
Number of Non-Detects 0 0
Number of Detect Data 57 15
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: Cr
Sample 2 Data: Bkgrnd Cr
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Gehan Sample 1 vs Sample 2 Comparison Hypothesis Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:56:51 AM
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
TW Statistic -6.006
TW Critical Value (0.05) 1.645
P-Value 1
Sample 1 vs Sample 2 Tarone-Ware Test
H0: Mean/Median of Sample 1 <= Mean/Median of Sample 2
KM Mean 15.88 30.6
KM SD 5.966 10.43
Median of Detects 15 30
SD of Detects 5.966 10.43
Maximum Detect 35 50
Mean of Detects 15.88 30.6
Percent Non-detects 0.00% 0.00%
Minimum Detect 5.7 9
Minimum Non-Detect N/A N/A
Maximum Non-Detect N/A N/A
Number of Non-Detects 0 0
Number of Detects 57 15
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: Cr
Sample 2 Data: Bkgrnd Cr
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Tarone-Ware Sample 1 vs Sample 2 Comparison Hypothesis Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:57:34 AM 1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
SD(U) - Adj ties 72.01
Approximate U-Stat Critical Value (0.05) 1.645
P-Value (Adjusted for Ties) 1
Sample 1 Rank Sum W-Stat 1746
Standardized WMW U-Stat -4.659
Mean (U) 427.5
Wilcoxon-Mann-Whitney (WMW) Test
H0: Mean/Median of Sample 1 <= Mean/Median of Sample 2
Median of Detects 15 30
SD of Detects 5.966 10.43
Maximum Detect 35 50
Mean of Detects 15.88 30.6
Percent Non-detects 0.00% 0.00%
Minimum Detect 5.7 9
Minimum Non-Detect N/A N/A
Maximum Non-Detect N/A N/A
Number of Non-Detects 0 0
Number of Detect Data 57 15
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: Cr
Sample 2 Data: Bkgrnd Cr
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Wilcoxon-Mann-Whitney Sample 1 vs Sample 2 Comparison Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:58:13 AM
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
TW Statistic -7.434
TW Critical Value (0.05) 1.645
P-Value 1
Sample 1 vs Sample 2 Tarone-Ware Test
H0: Mean/Median of Sample 1 <= Mean/Median of Sample 2
KM Mean 22.98 51.27
KM SD 7.991 15.96
Median of Detects 23 52
SD of Detects 7.991 15.96
Maximum Detect 47 75
Mean of Detects 22.98 51.27
Percent Non-detects 0.00% 0.00%
Minimum Detect 6.6 16
Minimum Non-Detect N/A N/A
Maximum Non-Detect N/A N/A
Number of Non-Detects 0 0
Number of Detects 57 15
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: V
Sample 2 Data: Bkgrnd V
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Tarone-Ware Sample 1 vs Sample 2 Comparison Hypothesis Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 11:03:44 AM 1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
SD(U) - Adj ties 72.04
Approximate U-Stat Critical Value (0.05) 1.645
P-Value (Adjusted for Ties) 1
Sample 1 Rank Sum W-Stat 1708
Standardized WMW U-Stat -5.185
Mean (U) 427.5
Wilcoxon-Mann-Whitney (WMW) Test
H0: Mean/Median of Sample 1 <= Mean/Median of Sample 2
Median of Detects 23 52
SD of Detects 7.991 15.96
Maximum Detect 47 75
Mean of Detects 22.98 51.27
Percent Non-detects 0.00% 0.00%
Minimum Detect 6.6 16
Minimum Non-Detect N/A N/A
Maximum Non-Detect N/A N/A
Number of Non-Detects 0 0
Number of Detect Data 57 15
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: V
Sample 2 Data: Bkgrnd V
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Wilcoxon-Mann-Whitney Sample 1 vs Sample 2 Comparison Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 11:04:08 AM 1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
Gehan z Test Value -5.234
Critical z (0.05) 1.645
P-Value 1
Sample 1 vs Sample 2 Gehan Test
H0: Mean/Median of Sample 1 <= Mean/Median of background KM Mean 22.98 51.27
KM SD 7.991 15.96
Median of Detects 23 52
SD of Detects 7.991 15.96
Maximum Detect 47 75
Mean of Detects 22.98 51.27
Percent Non-detects 0.00% 0.00%
Minimum Detect 6.6 16
Minimum Non-Detect N/A N/A
Maximum Non-Detect N/A N/A
Number of Non-Detects 0 0
Number of Detect Data 57 15
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: V
Sample 2 Data: Bkgrnd V
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Gehan Sample 1 vs Sample 2 Comparison Hypothesis Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 11:03:19 AM
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
Gehan z Test Value -3.404
Critical z (0.05) 1.645
P-Value 1
Sample 1 vs Sample 2 Gehan Test
H0: Mean/Median of Sample 1 <= Mean/Median of background KM Mean 40.68 57.73
KM SD 28.51 22.38
Median of Detects 30 54
SD of Detects 28.51 22.38
Maximum Detect 180 99
Mean of Detects 40.68 57.73
Percent Non-detects 0.00% 0.00%
Minimum Detect 16 29
Minimum Non-Detect N/A N/A
Maximum Non-Detect N/A N/A
Number of Non-Detects 0 0
Number of Detect Data 57 15
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: Zn
Sample 2 Data: Bkgrnd Zn
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Gehan Sample 1 vs Sample 2 Comparison Hypothesis Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 11:04:33 AM
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
TW Statistic -4.224
TW Critical Value (0.05) 1.645
P-Value 1
Sample 1 vs Sample 2 Tarone-Ware Test
H0: Mean/Median of Sample 1 <= Mean/Median of Sample 2
KM Mean 40.68 57.73
KM SD 28.51 22.38
Median of Detects 30 54
SD of Detects 28.51 22.38
Maximum Detect 180 99
Mean of Detects 40.68 57.73
Percent Non-detects 0.00% 0.00%
Minimum Detect 16 29
Minimum Non-Detect N/A N/A
Maximum Non-Detect N/A N/A
Number of Non-Detects 0 0
Number of Detects 57 15
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: Zn
Sample 2 Data: Bkgrnd Zn
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Tarone-Ware Sample 1 vs Sample 2 Comparison Hypothesis Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 11:04:56 AM 1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 A B C D E F G H I J K L
Conclusion with Alpha = 0.05
Do Not Reject H0, Conclude Sample 1 <= Sample 2
P-Value >= alpha (0.05)
SD(U) - Adj ties 72.08
Approximate U-Stat Critical Value (0.05) 1.645
P-Value (Adjusted for Ties) 1
Sample 1 Rank Sum W-Stat 1838
Standardized WMW U-Stat -3.379
Mean (U) 427.5
Wilcoxon-Mann-Whitney (WMW) Test
H0: Mean/Median of Sample 1 <= Mean/Median of Sample 2
Median of Detects 30 54
SD of Detects 28.51 22.38
Maximum Detect 180 99
Mean of Detects 40.68 57.73
Percent Non-detects 0.00% 0.00%
Minimum Detect 16 29
Minimum Non-Detect N/A N/A
Maximum Non-Detect N/A N/A
Number of Non-Detects 0 0
Number of Detect Data 57 15
Sample 1 Sample 2
Number of Valid Data 57 15
Sample 1 Data: Zn
Sample 2 Data: Bkgrnd Zn
Raw Statistics
Selected Null Hypothesis Sample 1 Mean/Median <= Sample 2 Mean/Median (Form 1) Alternative Hypothesis Sample 1 Mean/Median > Sample 2 Mean/Median From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
Wilcoxon-Mann-Whitney Sample 1 vs Sample 2 Comparison Test for Data Sets with Non-Detects User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 11:05:20 AM
APPENDIX F
ProUCL Statistical Analyses
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
A B C D E F G H I J K L
Mean (detects) 116.7
Theta hat (MLE) 198.8 Theta star (bias corrected MLE) N/A nu hat (MLE) 3.521 nu star (bias corrected) N/A
Gamma GOF Tests on Detected Observations Only
Not Enough Data to Perform GOF Test
Gamma Statistics on Detected Data Only
k hat (MLE) 0.587 k star (bias corrected MLE) N/A
97.5% KM Chebyshev UCL 75.21 99% KM Chebyshev UCL 110.2 95% KM (z) UCL 31.71 95% KM Bootstrap t UCL N/A
90% KM Chebyshev UCL 44.52 95% KM Chebyshev UCL 57.37
KM SD 48.84 95% KM (BCA) UCL N/A
95% KM (t) UCL 32.08 95% KM (Percentile Bootstrap) UCL N/A Detected Data appear Approximate Normal at 5% Significance Level Kaplan-Meier (KM) Statistics using Normal Critical Values and other Nonparametric UCLs KM Mean 16.15 KM Standard Error of Mean 9.457
Lilliefors Test Statistic 0.382 Lilliefors GOF Test
5% Lilliefors Critical Value 0.425 Detected Data appear Normal at 5% Significance Level Shapiro Wilk Test Statistic 0.757 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.767 Detected Data Not Normal at 5% Significance Level Warning: Data set has only 3 Detected Values.
This is not enough to compute meaningful or reliable statistics and estimates.
Normal GOF Test on Detects Only
Mean of Logged Detects 3.703 SD of Logged Detects 1.794 Median Detects 16 CV Detects 1.517
Skewness Detects 1.731 Kurtosis Detects N/A
Variance Detects 31316 Percent Non-Detects 92.5%
Mean Detects 116.7 SD Detects 177
Minimum Detect 13 Minimum Non-Detect 8
Maximum Detect 321 Maximum Non-Detect 8
Number of Detects 3 Number of Non-Detects 37
Number of Distinct Detects 3 Number of Distinct Non-Detects 1 General Statistics
Total Number of Observations 40 Number of Distinct Observations 4 Number of Bootstrap Operations 2000
4-Isopropyltoluene
From File Soil Vapor TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:39:02 AM 51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 90
91 92
93 94
95 96
97 98
99 100
A B C D E F G H I J K L
KM SD (logged) 0.586 95% Critical H Value (KM-Log) 1.99 KM Standard Error of Mean (logged) 0.114
KM SD (logged) 0.586 95% Critical H Value (KM-Log) 1.99 KM Standard Error of Mean (logged) 0.114 95% H-UCL (KM -Log) 12.94 Statistics using KM estimates on Logged Data and Assuming Lognormal Distribution KM Mean (logged) 2.201 KM Geo Mean 9.036
95% BCA Bootstrap UCL 33.99 95% Bootstrap t UCL 217.7
95% H-UCL (Log ROS) 1.775E+10
SD in Original Scale 50.73 SD in Log Scale 6.455
95% t UCL (assumes normality of ROS data) 22.32 95% Percentile Bootstrap UCL 24.83 Detected Data appear Lognormal at 5% Significance Level Lognormal ROS Statistics Using Imputed Non-Detects
Mean in Original Scale 8.8 Mean in Log Scale -8.607
Lilliefors Test Statistic 0.365 Lilliefors GOF Test
5% Lilliefors Critical Value 0.425 Detected Data appear Lognormal at 5% Significance Level Lognormal GOF Test on Detected Observations Only
Shapiro Wilk Test Statistic 0.798 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.767 Detected Data appear Lognormal at 5% Significance Level 95% Gamma Approximate KM-UCL (use when n>=50) 42.45 95% Gamma Adjusted KM-UCL (use when n<50) 44.1 Gamma Kaplan-Meier (KM) Statistics
Approximate Chi Square Value (9.43, α) 3.586 Adjusted Chi Square Value (9.43, β) 3.452 80% gamma percentile (KM) 13.87 90% gamma percentile (KM) 45.52 95% gamma percentile (KM) 92.37 99% gamma percentile (KM) 236 nu hat (KM) 8.749 nu star (KM) 9.426
theta hat (KM) 147.7 theta star (KM) 137.1
Variance (KM) 2385 SE of Mean (KM) 9.457
k hat (KM) 0.109 k star (KM) 0.118
Estimates of Gamma Parameters using KM Estimates
Mean (KM) 16.15 SD (KM) 48.84
Approximate Chi Square Value (10.79, α) 4.442 Adjusted Chi Square Value (10.79, β) 4.289 95% Gamma Approximate UCL (use when n>=50) 21.28 95% Gamma Adjusted UCL (use when n<50) N/A nu hat (MLE) 10.22 nu star (bias corrected) 10.79
Adjusted Level of Significance (β) 0.044
k hat (MLE) 0.128 k star (bias corrected MLE) 0.135
Theta hat (MLE) 68.54 Theta star (bias corrected MLE) 64.94 Maximum 321 Median 0.01
SD 50.74 CV 5.792
For gamma distributed detected data, BTVs and UCLs may be computed using gamma distribution on KM estimates Minimum 0.01 Mean 8.759
Gamma ROS Statistics using Imputed Non-Detects
GROS may not be used when data set has > 50% NDs with many tied observations at multiple DLs GROS may not be used when kstar of detects is small such as <1.0, especially when the sample size is small (e.g., <15-20) For such situations, GROS method may yield incorrect values of UCLs and BTVs This is especially true when the sample size is small.
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
A B C D E F G H I J K L
Recommendations are based upon data size, data distribution, and skewness.
These recommendations are based upon the results of the simulation studies summarized in Singh, Maichle, and Lee (2006).
However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.
When a data set follows an approximate (e.g., normal) distribution passing one of the GOF test When applicable, it is suggested to use a UCL based upon a distribution (e.g., gamma) passing both GOF tests in ProUCL Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.
Suggested UCL to Use
95% KM (t) UCL 32.08
DL/2 is not a recommended method, provided for comparisons and historical reasons Nonparametric Distribution Free UCL Statistics
Detected Data appear Approximate Normal Distributed at 5% Significance Level SD in Original Scale 50.09 SD in Log Scale 0.74
95% t UCL (Assumes normality) 25.79 95% H-Stat UCL 8.05 DL/2 Statistics
DL/2 Normal DL/2 Log-Transformed
Mean in Original Scale 12.45 Mean in Log Scale 1.56
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
A B C D E F G H I J K L
Mean (detects) 1474
Theta hat (MLE) 5334 Theta star (bias corrected MLE) 5823 nu hat (MLE) 3.87 nu star (bias corrected) 3.545
Detected data follow Appr. Gamma Distribution at 5% Significance Level Gamma Statistics on Detected Data Only
k hat (MLE) 0.276 k star (bias corrected MLE) 0.253
K-S Test Statistic 0.314 Kolmogorov-Smirnov GOF
5% K-S Critical Value 0.337 Detected data appear Gamma Distributed at 5% Significance Level Gamma GOF Tests on Detected Observations Only
A-D Test Statistic 0.798 Anderson-Darling GOF Test
5% A-D Critical Value 0.793 Detected Data Not Gamma Distributed at 5% Significance Level
97.5% KM Chebyshev UCL 1743 99% KM Chebyshev UCL 2621
95% KM (z) UCL 654.1 95% KM Bootstrap t UCL 9577
90% KM Chebyshev UCL 975 95% KM Chebyshev UCL 1297
KM SD 1387 95% KM (BCA) UCL 706.3
95% KM (t) UCL 663.6 95% KM (Percentile Bootstrap) UCL 706 Detected Data Not Normal at 5% Significance Level
Kaplan-Meier (KM) Statistics using Normal Critical Values and other Nonparametric UCLs KM Mean 264.6 KM Standard Error of Mean 236.8
Lilliefors Test Statistic 0.397 Lilliefors GOF Test
5% Lilliefors Critical Value 0.304 Detected Data Not Normal at 5% Significance Level Normal GOF Test on Detects Only
Shapiro Wilk Test Statistic 0.537 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.803 Detected Data Not Normal at 5% Significance Level Mean of Logged Detects 4.768 SD of Logged Detects 2.519 Median Detects 27 CV Detects 2.224
Skewness Detects 2.563 Kurtosis Detects 6.636
Variance Detects 10748016 Percent Non-Detects 82.5%
Mean Detects 1474 SD Detects 3278
Minimum Detect 13 Minimum Non-Detect 8
Maximum Detect 8850 Maximum Non-Detect 8
Number of Detects 7 Number of Non-Detects 33
Number of Distinct Detects 7 Number of Distinct Non-Detects 1 General Statistics
Total Number of Observations 40 Number of Distinct Observations 8 Number of Bootstrap Operations 2000
Benzene
From File Soil Vapor TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:35:30 AM 51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 90
91 92
93 94
95 96
97 98
99 100
A B C D E F G H I J K L
KM SD (logged) 1.413 95% Critical H Value (KM-Log) 2.929 KM SD (logged) 1.413 95% Critical H Value (KM-Log) 2.929 KM Standard Error of Mean (logged) 0.241 95% H-UCL (KM -Log) 67.37 Statistics using KM estimates on Logged Data and Assuming Lognormal Distribution KM Mean (logged) 2.55 KM Geo Mean 12.81
95% BCA Bootstrap UCL 1114 95% Bootstrap t UCL 9479
95% H-UCL (Log ROS) 4.639E+12
SD in Original Scale 1405 SD in Log Scale 6.67
95% t UCL (assumes normality of ROS data) 632.6 95% Percentile Bootstrap UCL 693.8 Lognormal ROS Statistics Using Imputed Non-Detects
Mean in Original Scale 258.1 Mean in Log Scale -5.21
5% Lilliefors Critical Value 0.304 Detected Data appear Lognormal at 5% Significance Level Detected Data appear Lognormal at 5% Significance Level 5% Shapiro Wilk Critical Value 0.803 Detected Data appear Lognormal at 5% Significance Level Lilliefors Test Statistic 0.292 Lilliefors GOF Test
Lognormal GOF Test on Detected Observations Only
Shapiro Wilk Test Statistic 0.846 Shapiro Wilk GOF Test 95% Gamma Approximate KM-UCL (use when n>=50) 1454 95% Gamma Adjusted KM-UCL (use when n<50) 1558 95% Gamma Adjusted KM-UCL (use when k<=1 and 15 < n < 50) Gamma Kaplan-Meier (KM) Statistics
Approximate Chi Square Value (4.03, α) 0.733 Adjusted Chi Square Value (4.03, β) 0.684 80% gamma percentile (KM) 36.8 90% gamma percentile (KM) 407.7 95% gamma percentile (KM) 1411 99% gamma percentile (KM) 5740 nu hat (KM) 2.914 nu star (KM) 4.029
theta hat (KM) 7266 theta star (KM) 5255
Variance (KM) 1922668 SE of Mean (KM) 236.8
k hat (KM) 0.0364 k star (KM) 0.0504
Estimates of Gamma Parameters using KM Estimates
Mean (KM) 264.6 SD (KM) 1387
Approximate Chi Square Value (8.43, α) 2.984 Adjusted Chi Square Value (8.43, β) 2.864 95% Gamma Approximate UCL (use when n>=50) 728.6 95% Gamma Adjusted UCL (use when n<50) 759.2 nu hat (MLE) 7.668 nu star (bias corrected) 8.426
Adjusted Level of Significance (β) 0.044
k hat (MLE) 0.0958 k star (bias corrected MLE) 0.105
Theta hat (MLE) 2692 Theta star (bias corrected MLE) 2450 Maximum 8850 Median 0.01
SD 1406 CV 5.447
For gamma distributed detected data, BTVs and UCLs may be computed using gamma distribution on KM estimates Minimum 0.01 Mean 258
Gamma ROS Statistics using Imputed Non-Detects
GROS may not be used when data set has > 50% NDs with many tied observations at multiple DLs GROS may not be used when kstar of detects is small such as <1.0, especially when the sample size is small (e.g., <15-20) For such situations, GROS method may yield incorrect values of UCLs and BTVs This is especially true when the sample size is small.
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
A B C D E F G H I J K L
Recommendations are based upon data size, data distribution, and skewness.
These recommendations are based upon the results of the simulation studies summarized in Singh, Maichle, and Lee (2006).
However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.
When a data set follows an approximate (e.g., normal) distribution passing one of the GOF test When applicable, it is suggested to use a UCL based upon a distribution (e.g., gamma) passing both GOF tests in ProUCL Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.
Suggested UCL to Use
a Adjusted KM-UCL (use when k<=1 and 15 < n < 50 but k<=1) 1558 DL/2 is not a recommended method, provided for comparisons and historical reasons Nonparametric Distribution Free UCL Statistics
Detected Data appear Approximate Gamma Distributed at 5% Significance Level SD in Original Scale 1405 SD in Log Scale 1.634
95% t UCL (Assumes normality) 635.6 95% H-Stat UCL 64.07 DL/2 Statistics
DL/2 Normal DL/2 Log-Transformed
Mean in Original Scale 261.3 Mean in Log Scale 1.978
KM Standard Error of Mean (logged) 0.241
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
A B C D E F G H I J K L
Mean (detects) 713.9
Theta hat (MLE) 3707 Theta star (bias corrected MLE) 3505 nu hat (MLE) 3.081 nu star (bias corrected) 3.259
Detected data appear Gamma Distributed at 5% Significance Level Gamma Statistics on Detected Data Only
k hat (MLE) 0.193 k star (bias corrected MLE) 0.204
K-S Test Statistic 0.306 Kolmogorov-Smirnov GOF
5% K-S Critical Value 0.324 Detected data appear Gamma Distributed at 5% Significance Level Gamma GOF Tests on Detected Observations Only
A-D Test Statistic 0.813 Anderson-Darling GOF Test
5% A-D Critical Value 0.842 Detected data appear Gamma Distributed at 5% Significance Level
97.5% KM Chebyshev UCL 468.9 99% KM Chebyshev UCL 687.6 95% KM (z) UCL 197.3 95% KM Bootstrap t UCL 328.1
90% KM Chebyshev UCL 277.3 95% KM Chebyshev UCL 357.6
KM SD 416.9 95% KM (BCA) UCL 208.8
95% KM (t) UCL 199 95% KM (Percentile Bootstrap) UCL 191.5 Detected Data appear Approximate Normal at 5% Significance Level Kaplan-Meier (KM) Statistics using Normal Critical Values and other Nonparametric UCLs KM Mean 100.2 KM Standard Error of Mean 59.03
Lilliefors Test Statistic 0.272 Lilliefors GOF Test
5% Lilliefors Critical Value 0.283 Detected Data appear Normal at 5% Significance Level Normal GOF Test on Detects Only
Shapiro Wilk Test Statistic 0.804 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.818 Detected Data Not Normal at 5% Significance Level Mean of Logged Detects 2.727 SD of Logged Detects 4.74
Median Detects 255.2 CV Detects 1.34
Skewness Detects 1.261 Kurtosis Detects 0.877
Variance Detects 914737 Percent Non-Detects 85.96%
Mean Detects 713.9 SD Detects 956.4
Minimum Detect 0.052 Minimum Non-Detect 0.042
Maximum Detect 2600 Maximum Non-Detect 0.1
Number of Detects 8 Number of Non-Detects 49
Number of Distinct Detects 8 Number of Distinct Non-Detects 15 General Statistics
Total Number of Observations 57 Number of Distinct Observations 23 Number of Bootstrap Operations 2000
C4-C12
From File CC in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:32:06 AM 51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 90
91 92
93 94
95 96
97 98
99 100
A B C D E F G H I J K L
KM SD (logged) 2.637 95% Critical H Value (KM-Log) 4.912 KM Standard Error of Mean (logged) 0.373
KM SD (logged) 2.637 95% Critical H Value (KM-Log) 4.912 KM Standard Error of Mean (logged) 0.373 95% H-UCL (KM -Log) 17.57 Statistics using KM estimates on Logged Data and Assuming Lognormal Distribution KM Mean (logged) -2.341 KM Geo Mean 0.0962
95% BCA Bootstrap UCL 244.1 95% Bootstrap t UCL 333.7
95% H-UCL (Log ROS) N/A
SD in Original Scale 420.6 SD in Log Scale 10.47
95% t UCL (assumes normality of ROS data) 193.4 95% Percentile Bootstrap UCL 208.8 Detected Data appear Approximate Lognormal at 5% Significance Level Lognormal ROS Statistics Using Imputed Non-Detects
Mean in Original Scale 100.2 Mean in Log Scale -15.75
Lilliefors Test Statistic 0.27 Lilliefors GOF Test
5% Lilliefors Critical Value 0.283 Detected Data appear Lognormal at 5% Significance Level Lognormal GOF Test on Detected Observations Only
Shapiro Wilk Test Statistic 0.798 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.818 Detected Data Not Lognormal at 5% Significance Level 95% Gamma Approximate KM-UCL (use when n>=50) 304.7 95% Gamma Adjusted KM-UCL (use when n<50) 314.2 Gamma Kaplan-Meier (KM) Statistics
Approximate Chi Square Value (7.58, α) 2.492 Adjusted Chi Square Value (7.58, β) 2.417 80% gamma percentile (KM) 31.69 90% gamma percentile (KM) 207.2 95% gamma percentile (KM) 572.5 99% gamma percentile (KM) 1934 nu hat (KM) 6.589 nu star (KM) 7.575
theta hat (KM) 1734 theta star (KM) 1508
Variance (KM) 173816 SE of Mean (KM) 59.03
k hat (KM) 0.0578 k star (KM) 0.0665
Estimates of Gamma Parameters using KM Estimates
Mean (KM) 100.2 SD (KM) 416.9
Approximate Chi Square Value (12.06, α) 5.267 Adjusted Chi Square Value (12.06, β) 5.15 95% Gamma Approximate UCL (use when n>=50) 229.4 95% Gamma Adjusted UCL (use when n<50) 234.6 nu hat (MLE) 11.32 nu star (bias corrected) 12.06
Adjusted Level of Significance (β) 0.0458
k hat (MLE) 0.0993 k star (bias corrected MLE) 0.106
Theta hat (MLE) 1009 Theta star (bias corrected MLE) 947.1 Maximum 2600 Median 0.01
SD 420.6 CV 4.198
For gamma distributed detected data, BTVs and UCLs may be computed using gamma distribution on KM estimates Minimum 0.01 Mean 100.2
Gamma ROS Statistics using Imputed Non-Detects
GROS may not be used when data set has > 50% NDs with many tied observations at multiple DLs GROS may not be used when kstar of detects is small such as <1.0, especially when the sample size is small (e.g., <15-20) For such situations, GROS method may yield incorrect values of UCLs and BTVs This is especially true when the sample size is small.
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
A B C D E F G H I J K L
Recommendations are based upon data size, data distribution, and skewness.
These recommendations are based upon the results of the simulation studies summarized in Singh, Maichle, and Lee (2006).
However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.
When a data set follows an approximate (e.g., normal) distribution passing one of the GOF test When applicable, it is suggested to use a UCL based upon a distribution (e.g., gamma) passing both GOF tests in ProUCL Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.
Suggested UCL to Use
95% KM (t) UCL 199
DL/2 is not a recommended method, provided for comparisons and historical reasons Nonparametric Distribution Free UCL Statistics
Detected Data appear Approximate Normal Distributed at 5% Significance Level SD in Original Scale 420.6 SD in Log Scale 2.794
95% t UCL (Assumes normality) 193.4 95% H-Stat UCL 21.78 DL/2 Statistics
DL/2 Normal DL/2 Log-Transformed
Mean in Original Scale 100.2 Mean in Log Scale -2.743
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
A B C D E F G H I J K L
Mean (detects) 665.5
Theta hat (MLE) 1065 Theta star (bias corrected MLE) 1270 nu hat (MLE) 15 nu star (bias corrected) 12.58
Detected data appear Gamma Distributed at 5% Significance Level Gamma Statistics on Detected Data Only
k hat (MLE) 0.625 k star (bias corrected MLE) 0.524
K-S Test Statistic 0.228 Kolmogorov-Smirnov GOF
5% K-S Critical Value 0.257 Detected data appear Gamma Distributed at 5% Significance Level Gamma GOF Tests on Detected Observations Only
A-D Test Statistic 0.615 Anderson-Darling GOF Test
5% A-D Critical Value 0.775 Detected data appear Gamma Distributed at 5% Significance Level
97.5% KM Chebyshev UCL 560 99% KM Chebyshev UCL 806.8
95% KM (z) UCL 253.6 95% KM Bootstrap t UCL 399.4
90% KM Chebyshev UCL 343.9 95% KM Chebyshev UCL 434.4
KM SD 481.5 95% KM (BCA) UCL 267.4
95% KM (t) UCL 255.5 95% KM (Percentile Bootstrap) UCL 259.6 Detected Data Not Normal at 5% Significance Level
Kaplan-Meier (KM) Statistics using Normal Critical Values and other Nonparametric UCLs KM Mean 144.1 KM Standard Error of Mean 66.61
Lilliefors Test Statistic 0.283 Lilliefors GOF Test
5% Lilliefors Critical Value 0.243 Detected Data Not Normal at 5% Significance Level Normal GOF Test on Detects Only
Shapiro Wilk Test Statistic 0.712 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.859 Detected Data Not Normal at 5% Significance Level Mean of Logged Detects 5.518 SD of Logged Detects 1.535 Median Detects 170 CV Detects 1.365
Skewness Detects 1.502 Kurtosis Detects 0.892
Variance Detects 825618 Percent Non-Detects 78.95%
Mean Detects 665.5 SD Detects 908.6
Minimum Detect 34 Minimum Non-Detect 5
Maximum Detect 2500 Maximum Non-Detect 5
Number of Detects 12 Number of Non-Detects 45
Number of Distinct Detects 11 Number of Distinct Non-Detects 1 General Statistics
Total Number of Observations 57 Number of Distinct Observations 12 Number of Bootstrap Operations 2000
C13-C22
From File CC in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:33:05 AM 51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 90
91 92
93 94
95 96
97 98
99 100
A B C D E F G H I J K L
KM SD (logged) 1.73 95% Critical H Value (KM-Log) 3.396 KM Standard Error of Mean (logged) 0.239
KM SD (logged) 1.73 95% Critical H Value (KM-Log) 3.396 KM Standard Error of Mean (logged) 0.239 95% H-UCL (KM -Log) 111.5 Statistics using KM estimates on Logged Data and Assuming Lognormal Distribution KM Mean (logged) 2.432 KM Geo Mean 11.38
95% BCA Bootstrap UCL 305.4 95% Bootstrap t UCL 431.6
95% H-UCL (Log ROS) 26830
SD in Original Scale 486.2 SD in Log Scale 3.639
95% t UCL (assumes normality of ROS data) 250.5 95% Percentile Bootstrap UCL 259.8 Detected Data appear Lognormal at 5% Significance Level Lognormal ROS Statistics Using Imputed Non-Detects
Mean in Original Scale 142.8 Mean in Log Scale 0.463
Lilliefors Test Statistic 0.153 Lilliefors GOF Test
5% Lilliefors Critical Value 0.243 Detected Data appear Lognormal at 5% Significance Level Lognormal GOF Test on Detected Observations Only
Shapiro Wilk Test Statistic 0.923 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.859 Detected Data appear Lognormal at 5% Significance Level 95% Gamma Approximate KM-UCL (use when n>=50) 346.3 95% Gamma Adjusted KM-UCL (use when n<50) 354.6 Gamma Kaplan-Meier (KM) Statistics
Approximate Chi Square Value (11.00, α) 4.576 Adjusted Chi Square Value (11.00, β) 4.469 80% gamma percentile (KM) 94.79 90% gamma percentile (KM) 377.6 95% gamma percentile (KM) 837.6 99% gamma percentile (KM) 2329 nu hat (KM) 10.2 nu star (KM) 11
theta hat (KM) 1609 theta star (KM) 1493
Variance (KM) 231839 SE of Mean (KM) 66.61
k hat (KM) 0.0895 k star (KM) 0.0965
Estimates of Gamma Parameters using KM Estimates
Mean (KM) 144.1 SD (KM) 481.5
Approximate Chi Square Value (13.04, α) 5.918 Adjusted Chi Square Value (13.04, β) 5.794 95% Gamma Approximate UCL (use when n>=50) 308.7 95% Gamma Adjusted UCL (use when n<50) 315.3 nu hat (MLE) 12.36 nu star (bias corrected) 13.04
Adjusted Level of Significance (β) 0.0458
k hat (MLE) 0.108 k star (bias corrected MLE) 0.114
Theta hat (MLE) 1293 Theta star (bias corrected MLE) 1225 Maximum 2500 Median 0.01
SD 486.9 CV 3.475
For gamma distributed detected data, BTVs and UCLs may be computed using gamma distribution on KM estimates Minimum 0.01 Mean 140.1
Gamma ROS Statistics using Imputed Non-Detects
GROS may not be used when data set has > 50% NDs with many tied observations at multiple DLs GROS may not be used when kstar of detects is small such as <1.0, especially when the sample size is small (e.g., <15-20) For such situations, GROS method may yield incorrect values of UCLs and BTVs This is especially true when the sample size is small.
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
A B C D E F G H I J K L
Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.
Recommendations are based upon data size, data distribution, and skewness.
These recommendations are based upon the results of the simulation studies summarized in Singh, Maichle, and Lee (2006).
However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.
Suggested UCL to Use
95% KM Approximate Gamma UCL 346.3
DL/2 is not a recommended method, provided for comparisons and historical reasons Nonparametric Distribution Free UCL Statistics
Detected Data appear Gamma Distributed at 5% Significance Level SD in Original Scale 486.4 SD in Log Scale 2.011
95% t UCL (Assumes normality) 249.8 95% H-Stat UCL 137.7 DL/2 Statistics
DL/2 Normal DL/2 Log-Transformed
Mean in Original Scale 142.1 Mean in Log Scale 1.885
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
A B C D E F G H I J K L
Mean (detects) 388.3
Theta hat (MLE) 482 Theta star (bias corrected MLE) 548.1 nu hat (MLE) 29 nu star (bias corrected) 25.5
Detected data appear Gamma Distributed at 5% Significance Level Gamma Statistics on Detected Data Only
k hat (MLE) 0.806 k star (bias corrected MLE) 0.708
K-S Test Statistic 0.137 Kolmogorov-Smirnov GOF
5% K-S Critical Value 0.211 Detected data appear Gamma Distributed at 5% Significance Level Gamma GOF Tests on Detected Observations Only
A-D Test Statistic 0.359 Anderson-Darling GOF Test
5% A-D Critical Value 0.775 Detected data appear Gamma Distributed at 5% Significance Level
97.5% KM Chebyshev UCL 407.2 99% KM Chebyshev UCL 573.8 95% KM (z) UCL 200.4 95% KM Bootstrap t UCL 277.1
90% KM Chebyshev UCL 261.3 95% KM Chebyshev UCL 322.4
KM SD 329.9 95% KM (BCA) UCL 207.7
95% KM (t) UCL 201.6 95% KM (Percentile Bootstrap) UCL 203.4 Detected Data Not Normal at 5% Significance Level
Kaplan-Meier (KM) Statistics using Normal Critical Values and other Nonparametric UCLs KM Mean 126.4 KM Standard Error of Mean 44.97
Lilliefors Test Statistic 0.248 Lilliefors GOF Test
5% Lilliefors Critical Value 0.202 Detected Data Not Normal at 5% Significance Level Normal GOF Test on Detects Only
Shapiro Wilk Test Statistic 0.657 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.897 Detected Data Not Normal at 5% Significance Level Mean of Logged Detects 5.226 SD of Logged Detects 1.429 Median Detects 200 CV Detects 1.309
Skewness Detects 2.884 Kurtosis Detects 10.03
Variance Detects 258494 Percent Non-Detects 68.42%
Mean Detects 388.3 SD Detects 508.4
Minimum Detect 5 Minimum Non-Detect 5
Maximum Detect 2200 Maximum Non-Detect 250
Number of Detects 18 Number of Non-Detects 39
Number of Distinct Detects 16 Number of Distinct Non-Detects 2 General Statistics
Total Number of Observations 57 Number of Distinct Observations 17 Number of Bootstrap Operations 2000
C23-C40
From File CC in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:33:31 AM 51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 90
91 92
93 94
95 96
97 98
99 100
A B C D E F G H I J K L
KM SD (logged) 1.855 95% Critical H Value (KM-Log) 3.569 KM Standard Error of Mean (logged) 0.254
KM SD (logged) 1.855 95% Critical H Value (KM-Log) 3.569 KM Standard Error of Mean (logged) 0.254 95% H-UCL (KM -Log) 214.3 Statistics using KM estimates on Logged Data and Assuming Lognormal Distribution KM Mean (logged) 2.761 KM Geo Mean 15.82
95% BCA Bootstrap UCL 244.9 95% Bootstrap t UCL 267.8
95% H-UCL (Log ROS) 1496
SD in Original Scale 332.5 SD in Log Scale 2.59
95% t UCL (assumes normality of ROS data) 200.9 95% Percentile Bootstrap UCL 197.5 Detected Data appear Lognormal at 5% Significance Level Lognormal ROS Statistics Using Imputed Non-Detects
Mean in Original Scale 127.2 Mean in Log Scale 2.284
Lilliefors Test Statistic 0.144 Lilliefors GOF Test
5% Lilliefors Critical Value 0.202 Detected Data appear Lognormal at 5% Significance Level Lognormal GOF Test on Detected Observations Only
Shapiro Wilk Test Statistic 0.945 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.897 Detected Data appear Lognormal at 5% Significance Level 95% Gamma Approximate KM-UCL (use when n>=50) 246.7 95% Gamma Adjusted KM-UCL (use when n<50) 251.1 Gamma Kaplan-Meier (KM) Statistics
Approximate Chi Square Value (17.19, α) 8.809 Adjusted Chi Square Value (17.19, β) 8.653 80% gamma percentile (KM) 138.2 90% gamma percentile (KM) 375.1 95% gamma percentile (KM) 694.9 99% gamma percentile (KM) 1622 nu hat (KM) 16.74 nu star (KM) 17.19
theta hat (KM) 860.8 theta star (KM) 838.1
Variance (KM) 108801 SE of Mean (KM) 44.97
k hat (KM) 0.147 k star (KM) 0.151
Estimates of Gamma Parameters using KM Estimates
Mean (KM) 126.4 SD (KM) 329.9
Approximate Chi Square Value (14.83, α) 7.145 Adjusted Chi Square Value (14.83, β) 7.006 95% Gamma Approximate UCL (use when n>=50) 254.5 95% Gamma Adjusted UCL (use when n<50) 259.6 nu hat (MLE) 14.25 nu star (bias corrected) 14.83
Adjusted Level of Significance (β) 0.0458
k hat (MLE) 0.125 k star (bias corrected MLE) 0.13
Theta hat (MLE) 981.1 Theta star (bias corrected MLE) 942.5 Maximum 2200 Median 0.01
SD 334.1 CV 2.725
For gamma distributed detected data, BTVs and UCLs may be computed using gamma distribution on KM estimates Minimum 0.01 Mean 122.6
Gamma ROS Statistics using Imputed Non-Detects
GROS may not be used when data set has > 50% NDs with many tied observations at multiple DLs GROS may not be used when kstar of detects is small such as <1.0, especially when the sample size is small (e.g., <15-20) For such situations, GROS method may yield incorrect values of UCLs and BTVs This is especially true when the sample size is small.
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
A B C D E F G H I J K L
Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.
Recommendations are based upon data size, data distribution, and skewness.
These recommendations are based upon the results of the simulation studies summarized in Singh, Maichle, and Lee (2006).
However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.
Suggested UCL to Use
95% KM Approximate Gamma UCL 246.7
DL/2 is not a recommended method, provided for comparisons and historical reasons Nonparametric Distribution Free UCL Statistics
Detected Data appear Gamma Distributed at 5% Significance Level SD in Original Scale 333.1 SD in Log Scale 2.187
95% t UCL (Assumes normality) 200.3 95% H-Stat UCL 376
DL/2 Statistics
DL/2 Normal DL/2 Log-Transformed
Mean in Original Scale 126.5 Mean in Log Scale 2.346
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
A B C D E F G H I J K L
Warning: Only one distinct data value was detected! ProUCL (or any other software) should not be used on such a data set! It is suggested to use alternative site specific values determined by the Project Team to estimate environmental parameters (e.g., EPC, BTV).
The data set for variable cis-1,2-Dichloroethene was not processed! Number of Detects 1 Number of Non-Detects 39
Number of Distinct Detects 1 Number of Distinct Non-Detects 1 General Statistics
Total Number of Observations 40 Number of Distinct Observations 2 Number of Bootstrap Operations 2000
cis-1,2-Dichloroethene
From File Soil Vapor TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:37:25 AM 1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
A B C D E F G H I J K L
Warning: Only one distinct data value was detected! ProUCL (or any other software) should not be used on such a data set! It is suggested to use alternative site specific values determined by the Project Team to estimate environmental parameters (e.g., EPC, BTV).
The data set for variable Di-isopropylether was not processed! Number of Detects 1 Number of Non-Detects 39
Number of Distinct Detects 1 Number of Distinct Non-Detects 1 General Statistics
Total Number of Observations 40 Number of Distinct Observations 2 Number of Bootstrap Operations 2000
Di-isopropylether
From File Soil Vapor TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:37:49 AM 1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
A B C D E F G H I J K L
Mean (detects) 1571
Theta hat (MLE) 2028 Theta star (bias corrected MLE) N/A nu hat (MLE) 4.648 nu star (bias corrected) N/A
Gamma GOF Tests on Detected Observations Only
Not Enough Data to Perform GOF Test
Gamma Statistics on Detected Data Only
k hat (MLE) 0.775 k star (bias corrected MLE) N/A
97.5% KM Chebyshev UCL 744.3 99% KM Chebyshev UCL 1112
95% KM (z) UCL 288.3 95% KM Bootstrap t UCL N/A
90% KM Chebyshev UCL 422.6 95% KM Chebyshev UCL 557.3
KM SD 511.9 95% KM (BCA) UCL N/A
95% KM (t) UCL 292.3 95% KM (Percentile Bootstrap) UCL N/A Detected Data appear Normal at 5% Significance Level
Kaplan-Meier (KM) Statistics using Normal Critical Values and other Nonparametric UCLs KM Mean 125.3 KM Standard Error of Mean 99.13
Lilliefors Test Statistic 0.265 Lilliefors GOF Test
5% Lilliefors Critical Value 0.425 Detected Data appear Normal at 5% Significance Level Shapiro Wilk Test Statistic 0.953 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.767 Detected Data appear Normal at 5% Significance Level Warning: Data set has only 3 Detected Values.
This is not enough to compute meaningful or reliable statistics and estimates.
Normal GOF Test on Detects Only
Mean of Logged Detects 6.59 SD of Logged Detects 1.988
Median Detects 1910 CV Detects 0.866
Skewness Detects -1.051 Kurtosis Detects N/A
Variance Detects 1849605 Percent Non-Detects 92.5%
Mean Detects 1571 SD Detects 1360
Minimum Detect 74 Minimum Non-Detect 8
Maximum Detect 2730 Maximum Non-Detect 8
Number of Detects 3 Number of Non-Detects 37
Number of Distinct Detects 3 Number of Distinct Non-Detects 1 General Statistics
Total Number of Observations 40 Number of Distinct Observations 4 Number of Bootstrap Operations 2000
Ethylbenzene
From File Soil Vapor TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:38:11 AM 51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 90
91 92
93 94
95 96
97 98
99 100
A B C D E F G H I J K L
KM SD (logged) 1.269 95% Critical H Value (KM-Log) 2.739 KM SD (logged) 1.269 95% Critical H Value (KM-Log) 2.739 KM Standard Error of Mean (logged) 0.246 95% H-UCL (KM -Log) 43.76 Statistics using KM estimates on Logged Data and Assuming Lognormal Distribution KM Mean (logged) 2.418 KM Geo Mean 11.22
95% BCA Bootstrap UCL 329.5 95% Bootstrap t UCL 5265
95% H-UCL (Log ROS) 2.935E+11
SD in Original Scale 519.9 SD in Log Scale 6.444
95% t UCL (assumes normality of ROS data) 257.3 95% Percentile Bootstrap UCL 260.3 Lognormal ROS Statistics Using Imputed Non-Detects
Mean in Original Scale 118.8 Mean in Log Scale -5.693
5% Lilliefors Critical Value 0.425 Detected Data appear Lognormal at 5% Significance Level Detected Data appear Lognormal at 5% Significance Level 5% Shapiro Wilk Critical Value 0.767 Detected Data appear Lognormal at 5% Significance Level Lilliefors Test Statistic 0.353 Lilliefors GOF Test
Lognormal GOF Test on Detected Observations Only
Shapiro Wilk Test Statistic 0.823 Shapiro Wilk GOF Test 95% Gamma Approximate KM-UCL (use when n>=50) 474.8 95% Gamma Adjusted KM-UCL (use when n<50) 501 95% Gamma Adjusted KM-UCL (use when k<=1 and 15 < n < 50) Gamma Kaplan-Meier (KM) Statistics
Approximate Chi Square Value (5.76, α) 1.52 Adjusted Chi Square Value (5.76, β) 1.441 80% gamma percentile (KM) 47.9 90% gamma percentile (KM) 276.3 95% gamma percentile (KM) 722.7 99% gamma percentile (KM) 2329 nu hat (KM) 4.789 nu star (KM) 5.764
theta hat (KM) 2092 theta star (KM) 1738
Variance (KM) 262034 SE of Mean (KM) 99.13
k hat (KM) 0.0599 k star (KM) 0.072
Estimates of Gamma Parameters using KM Estimates
Mean (KM) 125.3 SD (KM) 511.9
Approximate Chi Square Value (8.41, α) 2.977 Adjusted Chi Square Value (8.41, β) 2.856 95% Gamma Approximate UCL (use when n>=50) 333.1 95% Gamma Adjusted UCL (use when n<50) N/A nu hat (MLE) 7.654 nu star (bias corrected) 8.413
Adjusted Level of Significance (β) 0.044
k hat (MLE) 0.0957 k star (bias corrected MLE) 0.105
Theta hat (MLE) 1232 Theta star (bias corrected MLE) 1121 Maximum 2730 Median 0.01
SD 520.1 CV 4.413
For gamma distributed detected data, BTVs and UCLs may be computed using gamma distribution on KM estimates Minimum 0.01 Mean 117.9
Gamma ROS Statistics using Imputed Non-Detects
GROS may not be used when data set has > 50% NDs with many tied observations at multiple DLs GROS may not be used when kstar of detects is small such as <1.0, especially when the sample size is small (e.g., <15-20) For such situations, GROS method may yield incorrect values of UCLs and BTVs This is especially true when the sample size is small.
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
A B C D E F G H I J K L
Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.
Recommendations are based upon data size, data distribution, and skewness.
These recommendations are based upon the results of the simulation studies summarized in Singh, Maichle, and Lee (2006).
However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.
Suggested UCL to Use
95% KM (t) UCL 292.3
DL/2 is not a recommended method, provided for comparisons and historical reasons Nonparametric Distribution Free UCL Statistics
Detected Data appear Normal Distributed at 5% Significance Level SD in Original Scale 519.3 SD in Log Scale 1.459
95% t UCL (Assumes normality) 259.9 95% H-Stat UCL 34.5 DL/2 Statistics
DL/2 Normal DL/2 Log-Transformed
Mean in Original Scale 121.6 Mean in Log Scale 1.777
KM Standard Error of Mean (logged) 0.246
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
A B C D E F G H I J K L
Mean (detects) 8494800
Theta hat (MLE) 31808921 Theta star (bias corrected MLE) 34723719 nu hat (MLE) 3.205 nu star (bias corrected) 2.936
Detected data appear Gamma Distributed at 5% Significance Level Gamma Statistics on Detected Data Only
k hat (MLE) 0.267 k star (bias corrected MLE) 0.245
K-S Test Statistic 0.242 Kolmogorov-Smirnov GOF
5% K-S Critical Value 0.359 Detected data appear Gamma Distributed at 5% Significance Level Gamma GOF Tests on Detected Observations Only
A-D Test Statistic 0.475 Anderson-Darling GOF Test
5% A-D Critical Value 0.778 Detected data appear Gamma Distributed at 5% Significance Level
97.5% KM Chebyshev UCL 9096348 99% KM Chebyshev UCL 13735855 95% KM (z) UCL 3335722 95% KM Bootstrap t UCL 56368730
90% KM Chebyshev UCL 5032732 95% KM Chebyshev UCL 6734441 KM SD 7229988 95% KM (BCA) UCL 3599815
95% KM (t) UCL 3385840 95% KM (Percentile Bootstrap) UCL 3582945 Detected Data Not Normal at 5% Significance Level
Kaplan-Meier (KM) Statistics using Normal Critical Values and other Nonparametric UCLs KM Mean 1275920 KM Standard Error of Mean 1252271
Lilliefors Test Statistic 0.442 Lilliefors GOF Test
5% Lilliefors Critical Value 0.325 Detected Data Not Normal at 5% Significance Level Normal GOF Test on Detects Only
Shapiro Wilk Test Statistic 0.549 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.788 Detected Data Not Normal at 5% Significance Level Mean of Logged Detects 13.32 SD of Logged Detects 2.795 Median Detects 608500 CV Detects 2.185
Skewness Detects 2.425 Kurtosis Detects 5.901
Variance Detects 3.446E+14 Percent Non-Detects 85%
Mean Detects 8494800 SD Detects 18563717
Minimum Detect 25000 Minimum Non-Detect 2000
Maximum Detect 46300000 Maximum Non-Detect 2000
Number of Detects 6 Number of Non-Detects 34
Number of Distinct Detects 6 Number of Distinct Non-Detects 1 General Statistics
Total Number of Observations 40 Number of Distinct Observations 7 Number of Bootstrap Operations 2000
Gasoline Range Organics (GRO)
From File Soil Vapor TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:45:46 AM 51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 90
91 92
93 94
95 96
97 98
99 100
A B C D E F G H I J K L
KM SD (logged) 2.27 95% Critical H Value (KM-Log) 4.183 KM SD (logged) 2.27 95% Critical H Value (KM-Log) 4.183 KM Standard Error of Mean (logged) 0.393 95% H-UCL (KM -Log) 283682 Statistics using KM estimates on Logged Data and Assuming Lognormal Distribution KM Mean (logged) 8.459 KM Geo Mean 4719
95% BCA Bootstrap UCL 5788332 95% Bootstrap t UCL 65642478 95% H-UCL (Log ROS) 5.371E+21
SD in Original Scale 7322351 SD in Log Scale 7.996
95% t UCL (assumes normality of ROS data) 3225167 95% Percentile Bootstrap UCL 3581629 Lognormal ROS Statistics Using Imputed Non-Detects
Mean in Original Scale 1274477 Mean in Log Scale 0.71
5% Lilliefors Critical Value 0.325 Detected Data appear Lognormal at 5% Significance Level Detected Data appear Lognormal at 5% Significance Level 5% Shapiro Wilk Critical Value 0.788 Detected Data appear Lognormal at 5% Significance Level Lilliefors Test Statistic 0.154 Lilliefors GOF Test
Lognormal GOF Test on Detected Observations Only
Shapiro Wilk Test Statistic 0.962 Shapiro Wilk GOF Test 95% Gamma Approximate KM-UCL (use when n>=50) 7946506 95% Gamma Adjusted KM-UCL (use when n<50) 8550284 95% Gamma Adjusted KM-UCL (use when k<=1 and 15 < n < 50) Gamma Kaplan-Meier (KM) Statistics
Approximate Chi Square Value (3.64, α) 0.584 Adjusted Chi Square Value (3.64, β) 0.543 80% gamma percentile (KM) 121335 90% gamma percentile (KM) 1705881 95% gamma percentile (KM) 6532692 99% gamma percentile (KM) 28788821 nu hat (KM) 2.492 nu star (KM) 3.638
theta hat (KM) 40968653 theta star (KM) 28057804
Variance (KM) 5.227E+13 SE of Mean (KM) 1252271
k hat (KM) 0.0311 k star (KM) 0.0455
Estimates of Gamma Parameters using KM Estimates
Mean (KM) 1275920 SD (KM) 7229988
Approximate Chi Square Value (5.36, α) 1.32 Adjusted Chi Square Value (5.36, β) 1.248 95% Gamma Approximate UCL (use when n>=50) 5169542 95% Gamma Adjusted UCL (use when n<50) 5470073 nu hat (MLE) 4.349 nu star (bias corrected) 5.356
Adjusted Level of Significance (β) 0.044
k hat (MLE) 0.0544 k star (bias corrected MLE) 0.067
Theta hat (MLE) 23438755 Theta star (bias corrected MLE) 19031505 Maximum 46300000 Median 0.01
SD 7322397 CV 5.747
For gamma distributed detected data, BTVs and UCLs may be computed using gamma distribution on KM estimates Minimum 0.01 Mean 1274220
Gamma ROS Statistics using Imputed Non-Detects
GROS may not be used when data set has > 50% NDs with many tied observations at multiple DLs GROS may not be used when kstar of detects is small such as <1.0, especially when the sample size is small (e.g., <15-20) For such situations, GROS method may yield incorrect values of UCLs and BTVs This is especially true when the sample size is small.
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
A B C D E F G H I J K L
Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.
Recommendations are based upon data size, data distribution, and skewness.
These recommendations are based upon the results of the simulation studies summarized in Singh, Maichle, and Lee (2006).
However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.
Suggested UCL to Use
a Adjusted KM-UCL (use when k<=1 and 15 < n < 50 but k<=1) 8550284 DL/2 is not a recommended method, provided for comparisons and historical reasons Nonparametric Distribution Free UCL Statistics
Detected Data appear Gamma Distributed at 5% Significance Level SD in Original Scale 7322245 SD in Log Scale 2.527
95% t UCL (Assumes normality) 3225732 95% H-Stat UCL 406646 DL/2 Statistics
DL/2 Normal DL/2 Log-Transformed
Mean in Original Scale 1275070 Mean in Log Scale 7.87
KM Standard Error of Mean (logged) 0.393
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
A B C D E F G H I J K L
Mean (detects) 2279
Theta hat (MLE) 3667 Theta star (bias corrected MLE) N/A nu hat (MLE) 3.729 nu star (bias corrected) N/A
Gamma GOF Tests on Detected Observations Only
Not Enough Data to Perform GOF Test
Gamma Statistics on Detected Data Only
k hat (MLE) 0.621 k star (bias corrected MLE) N/A
97.5% KM Chebyshev UCL 1102 99% KM Chebyshev UCL 1650
95% KM (z) UCL 421.6 95% KM Bootstrap t UCL N/A
90% KM Chebyshev UCL 622.1 95% KM Chebyshev UCL 823.1
KM SD 763.8 95% KM (BCA) UCL N/A
95% KM (t) UCL 427.5 95% KM (Percentile Bootstrap) UCL N/A Detected Data appear Normal at 5% Significance Level
Kaplan-Meier (KM) Statistics using Normal Critical Values and other Nonparametric UCLs KM Mean 178.3 KM Standard Error of Mean 147.9
Lilliefors Test Statistic 0.206 Lilliefors GOF Test
5% Lilliefors Critical Value 0.425 Detected Data appear Normal at 5% Significance Level Shapiro Wilk Test Statistic 0.993 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.767 Detected Data appear Normal at 5% Significance Level Warning: Data set has only 3 Detected Values.
This is not enough to compute meaningful or reliable statistics and estimates.
Normal GOF Test on Detects Only
Mean of Logged Detects 6.742 SD of Logged Detects 2.353 Median Detects 2490 CV Detects 0.932
Skewness Detects -0.443 Kurtosis Detects N/A
Variance Detects 4512963 Percent Non-Detects 92.5%
Mean Detects 2279 SD Detects 2124
Minimum Detect 57 Minimum Non-Detect 8
Maximum Detect 4290 Maximum Non-Detect 8
Number of Detects 3 Number of Non-Detects 37
Number of Distinct Detects 3 Number of Distinct Non-Detects 1 General Statistics
Total Number of Observations 40 Number of Distinct Observations 4 Number of Bootstrap Operations 2000
Isopropylbenzene
From File Soil Vapor TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:38:36 AM 51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 90
91 92
93 94
95 96
97 98
99 100
A B C D E F G H I J K L
KM SD (logged) 1.336 95% Critical H Value (KM-Log) 2.827 KM SD (logged) 1.336 95% Critical H Value (KM-Log) 2.827 KM Standard Error of Mean (logged) 0.259 95% H-UCL (KM -Log) 50.74 Statistics using KM estimates on Logged Data and Assuming Lognormal Distribution KM Mean (logged) 2.429 KM Geo Mean 11.35
95% BCA Bootstrap UCL 512.8 95% Bootstrap t UCL 14775
95% H-UCL (Log ROS) 4.332E+16
SD in Original Scale 775.1 SD in Log Scale 7.748
95% t UCL (assumes normality of ROS data) 377.9 95% Percentile Bootstrap UCL 387.3 Lognormal ROS Statistics Using Imputed Non-Detects
Mean in Original Scale 171.4 Mean in Log Scale -8.029
5% Lilliefors Critical Value 0.425 Detected Data appear Lognormal at 5% Significance Level Detected Data appear Lognormal at 5% Significance Level 5% Shapiro Wilk Critical Value 0.767 Detected Data appear Lognormal at 5% Significance Level Lilliefors Test Statistic 0.343 Lilliefors GOF Test
Lognormal GOF Test on Detected Observations Only
Shapiro Wilk Test Statistic 0.843 Shapiro Wilk GOF Test 95% Gamma Approximate KM-UCL (use when n>=50) 722.1 95% Gamma Adjusted KM-UCL (use when n<50) 764.1 95% Gamma Adjusted KM-UCL (use when k<=1 and 15 < n < 50) Gamma Kaplan-Meier (KM) Statistics
Approximate Chi Square Value (5.37, α) 1.325 Adjusted Chi Square Value (5.37, β) 1.253 80% gamma percentile (KM) 57.71 90% gamma percentile (KM) 371.7 95% gamma percentile (KM) 1020 99% gamma percentile (KM) 3426 nu hat (KM) 4.36 nu star (KM) 5.367
theta hat (KM) 3272 theta star (KM) 2658
Variance (KM) 583446 SE of Mean (KM) 147.9
k hat (KM) 0.0545 k star (KM) 0.0671
Estimates of Gamma Parameters using KM Estimates
Mean (KM) 178.3 SD (KM) 763.8
Approximate Chi Square Value (8.16, α) 2.826 Adjusted Chi Square Value (8.16, β) 2.71 95% Gamma Approximate UCL (use when n>=50) 493.3 95% Gamma Adjusted UCL (use when n<50) N/A nu hat (MLE) 7.377 nu star (bias corrected) 8.157
Adjusted Level of Significance (β) 0.044
k hat (MLE) 0.0922 k star (bias corrected MLE) 0.102
Theta hat (MLE) 1854 Theta star (bias corrected MLE) 1676 Maximum 4290 Median 0.01
SD 775.2 CV 4.535
For gamma distributed detected data, BTVs and UCLs may be computed using gamma distribution on KM estimates Minimum 0.01 Mean 170.9
Gamma ROS Statistics using Imputed Non-Detects
GROS may not be used when data set has > 50% NDs with many tied observations at multiple DLs GROS may not be used when kstar of detects is small such as <1.0, especially when the sample size is small (e.g., <15-20) For such situations, GROS method may yield incorrect values of UCLs and BTVs This is especially true when the sample size is small.
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
A B C D E F G H I J K L
Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.
Recommendations are based upon data size, data distribution, and skewness.
These recommendations are based upon the results of the simulation studies summarized in Singh, Maichle, and Lee (2006).
However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.
Suggested UCL to Use
95% KM (t) UCL 427.5
DL/2 is not a recommended method, provided for comparisons and historical reasons Nonparametric Distribution Free UCL Statistics
Detected Data appear Normal Distributed at 5% Significance Level SD in Original Scale 774.4 SD in Log Scale 1.525
95% t UCL (Assumes normality) 380.9 95% H-Stat UCL 40.6 DL/2 Statistics
DL/2 Normal DL/2 Log-Transformed
Mean in Original Scale 174.6 Mean in Log Scale 1.788
KM Standard Error of Mean (logged) 0.259
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
A B C D E F G H I J K L
Mean (detects) 25.94
Theta hat (MLE) 9.041 Theta star (bias corrected MLE) 11.49 nu hat (MLE) 74.59 nu star (bias corrected) 58.71
Detected data appear Gamma Distributed at 5% Significance Level Gamma Statistics on Detected Data Only
k hat (MLE) 2.869 k star (bias corrected MLE) 2.258
K-S Test Statistic 0.164 Kolmogorov-Smirnov GOF
5% K-S Critical Value 0.238 Detected data appear Gamma Distributed at 5% Significance Level Gamma GOF Tests on Detected Observations Only
A-D Test Statistic 0.385 Anderson-Darling GOF Test
5% A-D Critical Value 0.74 Detected data appear Gamma Distributed at 5% Significance Level
97.5% KM Chebyshev UCL 20.99 99% KM Chebyshev UCL 26.68 95% KM (z) UCL 13.92 95% KM Bootstrap t UCL 15.38
90% KM Chebyshev UCL 16 95% KM Chebyshev UCL 18.09
KM SD 11.14 95% KM (BCA) UCL 14.12
95% KM (t) UCL 13.97 95% KM (Percentile Bootstrap) UCL 13.97 Detected Data Not Normal at 5% Significance Level
Kaplan-Meier (KM) Statistics using Normal Critical Values and other Nonparametric UCLs KM Mean 11.4 KM Standard Error of Mean 1.536
Lilliefors Test Statistic 0.245 Lilliefors GOF Test
5% Lilliefors Critical Value 0.234 Detected Data Not Normal at 5% Significance Level Normal GOF Test on Detects Only
Shapiro Wilk Test Statistic 0.845 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.866 Detected Data Not Normal at 5% Significance Level Mean of Logged Detects 3.071 SD of Logged Detects 0.628 Median Detects 19 CV Detects 0.66
Skewness Detects 1.22 Kurtosis Detects 0.473
Variance Detects 292.9 Percent Non-Detects 77.19%
Mean Detects 25.94 SD Detects 17.12
Minimum Detect 7.2 Minimum Non-Detect 7.1
Maximum Detect 61 Maximum Non-Detect 7.1
Number of Detects 13 Number of Non-Detects 44
Number of Distinct Detects 11 Number of Distinct Non-Detects 1 General Statistics
Total Number of Observations 57 Number of Distinct Observations 12 Number of Bootstrap Operations 2000
Pb
From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:34:14 AM 51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 90
91 92
93 94
95 96
97 98
99 100
A B C D E F G H I J K L
KM SD (logged) 0.548 95% Critical H Value (KM-Log) 1.919 KM Standard Error of Mean (logged) 0.0756
KM SD (logged) 0.548 95% Critical H Value (KM-Log) 1.919 KM Standard Error of Mean (logged) 0.0756 95% H-UCL (KM -Log) 12.24 Statistics using KM estimates on Logged Data and Assuming Lognormal Distribution KM Mean (logged) 2.214 KM Geo Mean 9.148
95% BCA Bootstrap UCL 11.49 95% Bootstrap t UCL 12.33
95% H-UCL (Log ROS) 15.75
SD in Original Scale 12.78 SD in Log Scale 1.442
95% t UCL (assumes normality of ROS data) 10.86 95% Percentile Bootstrap UCL 10.92 Detected Data appear Lognormal at 5% Significance Level Lognormal ROS Statistics Using Imputed Non-Detects
Mean in Original Scale 8.031 Mean in Log Scale 1.135
Lilliefors Test Statistic 0.13 Lilliefors GOF Test
5% Lilliefors Critical Value 0.234 Detected Data appear Lognormal at 5% Significance Level Lognormal GOF Test on Detected Observations Only
Shapiro Wilk Test Statistic 0.965 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.866 Detected Data appear Lognormal at 5% Significance Level 95% Gamma Approximate KM-UCL (use when n>=50) 14.37 95% Gamma Adjusted KM-UCL (use when n<50) 14.46 Gamma Kaplan-Meier (KM) Statistics
Approximate Chi Square Value (114.32, α) 90.63 Adjusted Chi Square Value (114.32, β) 90.09 80% gamma percentile (KM) 18.34 90% gamma percentile (KM) 26.22 95% gamma percentile (KM) 34.11 99% gamma percentile (KM) 52.41 nu hat (KM) 119.3 nu star (KM) 114.3
theta hat (KM) 10.89 theta star (KM) 11.37
Variance (KM) 124.2 SE of Mean (KM) 1.536
k hat (KM) 1.046 k star (KM) 1.003
Estimates of Gamma Parameters using KM Estimates
Mean (KM) 11.4 SD (KM) 11.14
Approximate Chi Square Value (19.75, α) 10.67 Adjusted Chi Square Value (19.75, β) 10.49 95% Gamma Approximate UCL (use when n>=50) 11.13 95% Gamma Adjusted UCL (use when n<50) 11.32 nu hat (MLE) 19.44 nu star (bias corrected) 19.75
Adjusted Level of Significance (β) 0.0458
k hat (MLE) 0.171 k star (bias corrected MLE) 0.173
Theta hat (MLE) 35.27 Theta star (bias corrected MLE) 34.71 Maximum 61 Median 0.01
SD 13.51 CV 2.246
For gamma distributed detected data, BTVs and UCLs may be computed using gamma distribution on KM estimates Minimum 0.01 Mean 6.014
Gamma ROS Statistics using Imputed Non-Detects
GROS may not be used when data set has > 50% NDs with many tied observations at multiple DLs GROS may not be used when kstar of detects is small such as <1.0, especially when the sample size is small (e.g., <15-20) For such situations, GROS method may yield incorrect values of UCLs and BTVs This is especially true when the sample size is small.
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
A B C D E F G H I J K L
Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.
Recommendations are based upon data size, data distribution, and skewness.
These recommendations are based upon the results of the simulation studies summarized in Singh, Maichle, and Lee (2006).
However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.
Suggested UCL to Use
95% KM Approximate Gamma UCL 14.37 95% GROS Approximate Gamma UCL 11.13 DL/2 is not a recommended method, provided for comparisons and historical reasons Nonparametric Distribution Free UCL Statistics
Detected Data appear Gamma Distributed at 5% Significance Level SD in Original Scale 12.35 SD in Log Scale 0.817
95% t UCL (Assumes normality) 11.39 95% H-Stat UCL 9.455 DL/2 Statistics
DL/2 Normal DL/2 Log-Transformed
Mean in Original Scale 8.656 Mean in Log Scale 1.678
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
A B C D E F G H I J K L
Mean (detects) 935.3
Theta hat (MLE) 423.7 Theta star (bias corrected MLE) N/A nu hat (MLE) 13.25 nu star (bias corrected) N/A
Gamma GOF Tests on Detected Observations Only
Not Enough Data to Perform GOF Test
Gamma Statistics on Detected Data Only
k hat (MLE) 2.208 k star (bias corrected MLE) N/A
97.5% KM Chebyshev UCL 437.5 99% KM Chebyshev UCL 646.7 95% KM (z) UCL 177.8 95% KM Bootstrap t UCL N/A
90% KM Chebyshev UCL 254.3 95% KM Chebyshev UCL 331
KM SD 291.5 95% KM (BCA) UCL N/A
95% KM (t) UCL 180.1 95% KM (Percentile Bootstrap) UCL N/A Detected Data appear Normal at 5% Significance Level
Kaplan-Meier (KM) Statistics using Normal Critical Values and other Nonparametric UCLs KM Mean 84.95 KM Standard Error of Mean 56.46
Lilliefors Test Statistic 0.241 Lilliefors GOF Test
5% Lilliefors Critical Value 0.425 Detected Data appear Normal at 5% Significance Level Shapiro Wilk Test Statistic 0.974 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.767 Detected Data appear Normal at 5% Significance Level Warning: Data set has only 3 Detected Values.
This is not enough to compute meaningful or reliable statistics and estimates.
Normal GOF Test on Detects Only
Mean of Logged Detects 6.598 SD of Logged Detects 0.898 Median Detects 799 CV Detects 0.776
Skewness Detects 0.815 Kurtosis Detects N/A
Variance Detects 527312 Percent Non-Detects 92.5%
Mean Detects 935.3 SD Detects 726.2
Minimum Detect 287 Minimum Non-Detect 16
Maximum Detect 1720 Maximum Non-Detect 16
Number of Detects 3 Number of Non-Detects 37
Number of Distinct Detects 3 Number of Distinct Non-Detects 1 General Statistics
Total Number of Observations 40 Number of Distinct Observations 4 Number of Bootstrap Operations 2000
m,p-Xylenes
From File Soil Vapor TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:45:00 AM 51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 90
91 92
93 94
95 96
97 98
99 100
A B C D E F G H I J K L
KM SD (logged) 1.027 95% Critical H Value (KM-Log) 2.44 KM SD (logged) 1.027 95% Critical H Value (KM-Log) 2.44 KM Standard Error of Mean (logged) 0.199 95% H-UCL (KM -Log) 53.97 Statistics using KM estimates on Logged Data and Assuming Lognormal Distribution KM Mean (logged) 3.059 KM Geo Mean 21.32
95% BCA Bootstrap UCL 215.2 95% Bootstrap t UCL 523.3
95% H-UCL (Log ROS) 8101
SD in Original Scale 297.4 SD in Log Scale 3.357
95% t UCL (assumes normality of ROS data) 158.6 95% Percentile Bootstrap UCL 162.9 Lognormal ROS Statistics Using Imputed Non-Detects
Mean in Original Scale 79.41 Mean in Log Scale 0.195
5% Lilliefors Critical Value 0.425 Detected Data appear Lognormal at 5% Significance Level Detected Data appear Lognormal at 5% Significance Level 5% Shapiro Wilk Critical Value 0.767 Detected Data appear Lognormal at 5% Significance Level Lilliefors Test Statistic 0.205 Lilliefors GOF Test
Lognormal GOF Test on Detected Observations Only
Shapiro Wilk Test Statistic 0.993 Shapiro Wilk GOF Test 95% Gamma Approximate KM-UCL (use when n>=50) 257.3 95% Gamma Adjusted KM-UCL (use when n<50) 268.9 95% Gamma Adjusted KM-UCL (use when k<=1 and 15 < n < 50) Gamma Kaplan-Meier (KM) Statistics
Approximate Chi Square Value (7.62, α) 2.515 Adjusted Chi Square Value (7.62, β) 2.406 80% gamma percentile (KM) 54.75 90% gamma percentile (KM) 221.3 95% gamma percentile (KM) 494.2 99% gamma percentile (KM) 1383 nu hat (KM) 6.792 nu star (KM) 7.616
theta hat (KM) 1001 theta star (KM) 892.3
Variance (KM) 85000 SE of Mean (KM) 56.46
k hat (KM) 0.0849 k star (KM) 0.0952
Estimates of Gamma Parameters using KM Estimates
Mean (KM) 84.95 SD (KM) 291.5
Approximate Chi Square Value (8.82, α) 3.218 Adjusted Chi Square Value (8.82, β) 3.092 95% Gamma Approximate UCL (use when n>=50) 192.3 95% Gamma Adjusted UCL (use when n<50) N/A nu hat (MLE) 8.093 nu star (bias corrected) 8.82
Adjusted Level of Significance (β) 0.044
k hat (MLE) 0.101 k star (bias corrected MLE) 0.11
Theta hat (MLE) 693.5 Theta star (bias corrected MLE) 636.4 Maximum 1720 Median 0.01
SD 298.8 CV 4.259
For gamma distributed detected data, BTVs and UCLs may be computed using gamma distribution on KM estimates Minimum 0.01 Mean 70.16
Gamma ROS Statistics using Imputed Non-Detects
GROS may not be used when data set has > 50% NDs with many tied observations at multiple DLs GROS may not be used when kstar of detects is small such as <1.0, especially when the sample size is small (e.g., <15-20) For such situations, GROS method may yield incorrect values of UCLs and BTVs This is especially true when the sample size is small.
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
A B C D E F G H I J K L
Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.
Recommendations are based upon data size, data distribution, and skewness.
These recommendations are based upon the results of the simulation studies summarized in Singh, Maichle, and Lee (2006).
However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.
Suggested UCL to Use
95% KM (t) UCL 180.1
DL/2 is not a recommended method, provided for comparisons and historical reasons Nonparametric Distribution Free UCL Statistics
Detected Data appear Normal Distributed at 5% Significance Level SD in Original Scale 297 SD in Log Scale 1.222
95% t UCL (Assumes normality) 156.7 95% H-Stat UCL 40.03 DL/2 Statistics
DL/2 Normal DL/2 Log-Transformed
Mean in Original Scale 77.55 Mean in Log Scale 2.418
KM Standard Error of Mean (logged) 0.199
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
A B C D E F G H I J K L
Mean (detects) 16
Theta hat (MLE) 3.096 Theta star (bias corrected MLE) 7.27 nu hat (MLE) 51.69 nu star (bias corrected) 22.01
Detected data appear Gamma Distributed at 5% Significance Level Gamma Statistics on Detected Data Only
k hat (MLE) 5.169 k star (bias corrected MLE) 2.201
K-S Test Statistic 0.251 Kolmogorov-Smirnov GOF
5% K-S Critical Value 0.358 Detected data appear Gamma Distributed at 5% Significance Level Gamma GOF Tests on Detected Observations Only
A-D Test Statistic 0.342 Anderson-Darling GOF Test
5% A-D Critical Value 0.681 Detected data appear Gamma Distributed at 5% Significance Level
97.5% KM Chebyshev UCL 12.94 99% KM Chebyshev UCL 15.28 95% KM (z) UCL 10.04 95% KM Bootstrap t UCL 10.24
90% KM Chebyshev UCL 10.89 95% KM Chebyshev UCL 11.75
KM SD 3.571 95% KM (BCA) UCL 10.05
95% KM (t) UCL 10.06 95% KM (Percentile Bootstrap) UCL 10.03 Detected Data appear Normal at 5% Significance Level
Kaplan-Meier (KM) Statistics using Normal Critical Values and other Nonparametric UCLs KM Mean 9 KM Standard Error of Mean 0.631
Lilliefors Test Statistic 0.222 Lilliefors GOF Test
5% Lilliefors Critical Value 0.343 Detected Data appear Normal at 5% Significance Level Normal GOF Test on Detects Only
Shapiro Wilk Test Statistic 0.929 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.762 Detected Data appear Normal at 5% Significance Level Mean of Logged Detects 2.673 SD of Logged Detects 0.513 Median Detects 17 CV Detects 0.474
Skewness Detects 0.201 Kurtosis Detects -1.666
Variance Detects 57.5 Percent Non-Detects 87.5%
Mean Detects 16 SD Detects 7.583
Minimum Detect 8 Minimum Non-Detect 8
Maximum Detect 26 Maximum Non-Detect 8
Number of Detects 5 Number of Non-Detects 35
Number of Distinct Detects 5 Number of Distinct Non-Detects 1 General Statistics
Total Number of Observations 40 Number of Distinct Observations 5 Number of Bootstrap Operations 2000
Methylene chloride
From File Soil Vapor TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:39:27 AM 51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 90
91 92
93 94
95 96
97 98
99 100
A B C D E F G H I J K L
KM SD (logged) 0.255 95% Critical H Value (KM-Log) 1.766 KM Standard Error of Mean (logged) 0.045
KM SD (logged) 0.255 95% Critical H Value (KM-Log) 1.766 KM Standard Error of Mean (logged) 0.045 95% H-UCL (KM -Log) 9.564 Statistics using KM estimates on Logged Data and Assuming Lognormal Distribution KM Mean (logged) 2.154 KM Geo Mean 8.616
95% BCA Bootstrap UCL 5.293 95% Bootstrap t UCL 5.678
95% H-UCL (Log ROS) 7.591
SD in Original Scale 5.619 SD in Log Scale 1.499
95% t UCL (assumes normality of ROS data) 4.816 95% Percentile Bootstrap UCL 4.851 Detected Data appear Lognormal at 5% Significance Level Lognormal ROS Statistics Using Imputed Non-Detects
Mean in Original Scale 3.32 Mean in Log Scale 0.172
Lilliefors Test Statistic 0.223 Lilliefors GOF Test
5% Lilliefors Critical Value 0.343 Detected Data appear Lognormal at 5% Significance Level Lognormal GOF Test on Detected Observations Only
Shapiro Wilk Test Statistic 0.907 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.762 Detected Data appear Lognormal at 5% Significance Level 95% Gamma Approximate KM-UCL (use when n>=50) 10.05 95% Gamma Adjusted KM-UCL (use when n<50) 10.09 Gamma Kaplan-Meier (KM) Statistics
Approximate Chi Square Value (471.45, α) 422.1 Adjusted Chi Square Value (471.45, β) 420.4 80% gamma percentile (KM) 11.88 90% gamma percentile (KM) 13.96 95% gamma percentile (KM) 15.84 99% gamma percentile (KM) 19.78 nu hat (KM) 508.2 nu star (KM) 471.5
theta hat (KM) 1.417 theta star (KM) 1.527
Variance (KM) 12.75 SE of Mean (KM) 0.631
k hat (KM) 6.353 k star (KM) 5.893
Estimates of Gamma Parameters using KM Estimates
Mean (KM) 9 SD (KM) 3.571
Approximate Chi Square Value (14.58, α) 6.971 Adjusted Chi Square Value (14.58, β) 6.774 95% Gamma Approximate UCL (use when n>=50) 4.468 95% Gamma Adjusted UCL (use when n<50) 4.598 nu hat (MLE) 14.32 nu star (bias corrected) 14.58
Adjusted Level of Significance (β) 0.044
k hat (MLE) 0.179 k star (bias corrected MLE) 0.182
Theta hat (MLE) 11.93 Theta star (bias corrected MLE) 11.72 Maximum 26 Median 0.01
SD 5.867 CV 2.747
For gamma distributed detected data, BTVs and UCLs may be computed using gamma distribution on KM estimates Minimum 0.01 Mean 2.136
Gamma ROS Statistics using Imputed Non-Detects
GROS may not be used when data set has > 50% NDs with many tied observations at multiple DLs GROS may not be used when kstar of detects is small such as <1.0, especially when the sample size is small (e.g., <15-20) For such situations, GROS method may yield incorrect values of UCLs and BTVs This is especially true when the sample size is small.
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
A B C D E F G H I J K L
Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.
Recommendations are based upon data size, data distribution, and skewness.
These recommendations are based upon the results of the simulation studies summarized in Singh, Maichle, and Lee (2006).
However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.
Suggested UCL to Use
95% KM (t) UCL 10.06
DL/2 is not a recommended method, provided for comparisons and historical reasons Nonparametric Distribution Free UCL Statistics
Detected Data appear Normal Distributed at 5% Significance Level SD in Original Scale 4.696 SD in Log Scale 0.461
95% t UCL (Assumes normality) 6.751 95% H-Stat UCL 6.008 DL/2 Statistics
DL/2 Normal DL/2 Log-Transformed
Mean in Original Scale 5.5 Mean in Log Scale 1.547
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
A B C D E F G H I J K L
Variance (KM) 3.571E+8 SE of Mean (KM) 4226
Estimates of Gamma Parameters using KM Estimates
Mean (KM) 3278 SD (KM) 18898
Mean (detects) 64805
Theta hat (MLE) 76658 Theta star (bias corrected MLE) N/A nu hat (MLE) 3.382 nu star (bias corrected) N/A
Gamma GOF Tests on Detected Observations Only
Not Enough Data to Perform GOF Test
Gamma Statistics on Detected Data Only
k hat (MLE) 0.845 k star (bias corrected MLE) N/A
97.5% KM Chebyshev UCL 29668 99% KM Chebyshev UCL 45324 95% KM (z) UCL 10229 95% KM Bootstrap t UCL N/A
90% KM Chebyshev UCL 15955 95% KM Chebyshev UCL 21698
KM SD 18898 95% KM (BCA) UCL N/A
95% KM (t) UCL 10398 95% KM (Percentile Bootstrap) UCL N/A Not Enough Data to Perform GOF Test
Kaplan-Meier (KM) Statistics using Normal Critical Values and other Nonparametric UCLs KM Mean 3278 KM Standard Error of Mean 4226
Warning: Data set has only 2 Detected Values.
This is not enough to compute meaningful or reliable statistics and estimates.
Normal GOF Test on Detects Only
Mean of Logged Detects 10.38 SD of Logged Detects 1.869 Median Detects 64805 CV Detects 1.226
Skewness Detects N/A Kurtosis Detects N/A
Variance Detects 6.316E+9 Percent Non-Detects 95%
Mean Detects 64805 SD Detects 79472
Minimum Detect 8610 Minimum Non-Detect 40
Maximum Detect 121000 Maximum Non-Detect 40
Number of Detects 2 Number of Non-Detects 38
Number of Distinct Detects 2 Number of Distinct Non-Detects 1 General Statistics
Total Number of Observations 40 Number of Distinct Observations 3 Number of Bootstrap Operations 2000
Methyl tert-butyl ether
From File Soil Vapor TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:43:03 AM 51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 90
91 92
93 94
95 96
97 A B C D E F G H I J K L
Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.
Recommendations are based upon data size, data distribution, and skewness.
These recommendations are based upon the results of the simulation studies summarized in Singh, Maichle, and Lee (2006).
However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.
Suggested UCL to Use
95% KM (Chebyshev) UCL 21698
DL/2 is not a recommended method, provided for comparisons and historical reasons Nonparametric Distribution Free UCL Statistics
Data do not follow a Discernible Distribution at 5% Significance Level SD in Original Scale 19142 SD in Log Scale 1.658
95% t UCL (Assumes normality) 8359 95% H-Stat UCL 272.4 DL/2 Statistics
DL/2 Normal DL/2 Log-Transformed
Mean in Original Scale 3259 Mean in Log Scale 3.365
KM SD (logged) 1.488 95% Critical H Value (KM-Log) 3.033 KM Standard Error of Mean (logged) 0.333
KM SD (logged) 1.488 95% Critical H Value (KM-Log) 3.033 KM Standard Error of Mean (logged) 0.333 95% H-UCL (KM -Log) 348.7 Statistics using KM estimates on Logged Data and Assuming Lognormal Distribution KM Mean (logged) 4.024 KM Geo Mean 55.9
95% BCA Bootstrap UCL 12747 95% Bootstrap t UCL 1517994 95% H-UCL (Log ROS) 1.367E+21
SD in Original Scale 19144 SD in Log Scale 8.523
95% t UCL (assumes normality of ROS data) 8349 95% Percentile Bootstrap UCL 9291 Lognormal ROS Statistics Using Imputed Non-Detects
Mean in Original Scale 3249 Mean in Log Scale -7.361
95% Gamma Adjusted KM-UCL (use when k<=1 and 15 < n < 50) Lognormal GOF Test on Detected Observations Only
Not Enough Data to Perform GOF Test
Approximate Chi Square Value (3.56, α) 0.556 Adjusted Chi Square Value (3.56, β) 0.516 95% Gamma Approximate KM-UCL (use when n>=50) 20988 95% Gamma Adjusted KM-UCL (use when n<50) 22604 Gamma Kaplan-Meier (KM) Statistics
Adjusted Level of Significance (β) 0.044
80% gamma percentile (KM) 285.8 90% gamma percentile (KM) 4242 95% gamma percentile (KM) 16620 99% gamma percentile (KM) 74567 nu hat (KM) 2.407 nu star (KM) 3.56
theta hat (KM) 108940 theta star (KM) 73665
k hat (KM) 0.0301 k star (KM) 0.0445
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
A B C D E F G H I J K L
Mean (detects) 424
Theta hat (MLE) 420.4 Theta star (bias corrected MLE) N/A nu hat (MLE) 6.052 nu star (bias corrected) N/A
Gamma GOF Tests on Detected Observations Only
Not Enough Data to Perform GOF Test
Gamma Statistics on Detected Data Only
k hat (MLE) 1.009 k star (bias corrected MLE) N/A
97.5% KM Chebyshev UCL 230.8 99% KM Chebyshev UCL 326.9 95% KM (z) UCL 111.5 95% KM Bootstrap t UCL N/A
90% KM Chebyshev UCL 146.6 95% KM Chebyshev UCL 181.9
KM SD 134 95% KM (BCA) UCL N/A
95% KM (t) UCL 112.5 95% KM (Percentile Bootstrap) UCL N/A Detected Data appear Normal at 5% Significance Level
Kaplan-Meier (KM) Statistics using Normal Critical Values and other Nonparametric UCLs KM Mean 68.8 KM Standard Error of Mean 25.94
Lilliefors Test Statistic 0.186 Lilliefors GOF Test
5% Lilliefors Critical Value 0.425 Detected Data appear Normal at 5% Significance Level Shapiro Wilk Test Statistic 0.998 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.767 Detected Data appear Normal at 5% Significance Level Warning: Data set has only 3 Detected Values.
This is not enough to compute meaningful or reliable statistics and estimates.
Normal GOF Test on Detects Only
Mean of Logged Detects 5.478 SD of Logged Detects 1.569 Median Detects 405 CV Detects 0.927
Skewness Detects 0.217 Kurtosis Detects N/A
Variance Detects 154327 Percent Non-Detects 92.5%
Mean Detects 424 SD Detects 392.8
Minimum Detect 41 Minimum Non-Detect 40
Maximum Detect 826 Maximum Non-Detect 40
Number of Detects 3 Number of Non-Detects 37
Number of Distinct Detects 3 Number of Distinct Non-Detects 1 General Statistics
Total Number of Observations 40 Number of Distinct Observations 4 Number of Bootstrap Operations 2000
Naphthalene
From File Soil Vapor TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:43:26 AM 51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 90
91 92
93 94
95 96
97 98
99 100
A B C D E F G H I J K L
KM SD (logged) 0.588 95% Critical H Value (KM-Log) 1.991 KM Standard Error of Mean (logged) 0.114
KM SD (logged) 0.588 95% Critical H Value (KM-Log) 1.991 KM Standard Error of Mean (logged) 0.114 95% H-UCL (KM -Log) 65.56 Statistics using KM estimates on Logged Data and Assuming Lognormal Distribution KM Mean (logged) 3.823 KM Geo Mean 45.74
95% BCA Bootstrap UCL 103.1 95% Bootstrap t UCL 721.1
95% H-UCL (Log ROS) 83609377
SD in Original Scale 143.8 SD in Log Scale 5.475
95% t UCL (assumes normality of ROS data) 70.69 95% Percentile Bootstrap UCL 73.7 Detected Data appear Lognormal at 5% Significance Level Lognormal ROS Statistics Using Imputed Non-Detects
Mean in Original Scale 32.39 Mean in Log Scale -4.961
Lilliefors Test Statistic 0.298 Lilliefors GOF Test
5% Lilliefors Critical Value 0.425 Detected Data appear Lognormal at 5% Significance Level Lognormal GOF Test on Detected Observations Only
Shapiro Wilk Test Statistic 0.916 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.767 Detected Data appear Lognormal at 5% Significance Level 95% Gamma Approximate KM-UCL (use when n>=50) 125 95% Gamma Adjusted KM-UCL (use when n<50) 127.9 Gamma Kaplan-Meier (KM) Statistics
Approximate Chi Square Value (20.85, α) 11.48 Adjusted Chi Square Value (20.85, β) 11.22 80% gamma percentile (KM) 101.4 90% gamma percentile (KM) 205.8 95% gamma percentile (KM) 328.9 99% gamma percentile (KM) 654.5 nu hat (KM) 21.1 nu star (KM) 20.85
theta hat (KM) 260.8 theta star (KM) 264
Variance (KM) 17946 SE of Mean (KM) 25.94
k hat (KM) 0.264 k star (KM) 0.261
Estimates of Gamma Parameters using KM Estimates
Mean (KM) 68.8 SD (KM) 134
Approximate Chi Square Value (9.46, α) 3.606 Adjusted Chi Square Value (9.46, β) 3.471 95% Gamma Approximate UCL (use when n>=50) 83.43 95% Gamma Adjusted UCL (use when n<50) N/A nu hat (MLE) 8.783 nu star (bias corrected) 9.458
Adjusted Level of Significance (β) 0.044
k hat (MLE) 0.11 k star (bias corrected MLE) 0.118
Theta hat (MLE) 289.7 Theta star (bias corrected MLE) 269.1 Maximum 826 Median 0.01
SD 143.9 CV 4.524
For gamma distributed detected data, BTVs and UCLs may be computed using gamma distribution on KM estimates Minimum 0.01 Mean 31.81
Gamma ROS Statistics using Imputed Non-Detects
GROS may not be used when data set has > 50% NDs with many tied observations at multiple DLs GROS may not be used when kstar of detects is small such as <1.0, especially when the sample size is small (e.g., <15-20) For such situations, GROS method may yield incorrect values of UCLs and BTVs This is especially true when the sample size is small.
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
A B C D E F G H I J K L
Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.
Recommendations are based upon data size, data distribution, and skewness.
These recommendations are based upon the results of the simulation studies summarized in Singh, Maichle, and Lee (2006).
However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.
Suggested UCL to Use
95% KM (t) UCL 112.5
DL/2 is not a recommended method, provided for comparisons and historical reasons Nonparametric Distribution Free UCL Statistics
Detected Data appear Normal Distributed at 5% Significance Level SD in Original Scale 139.7 SD in Log Scale 0.751
95% t UCL (Assumes normality) 87.53 95% H-Stat UCL 41.34 DL/2 Statistics
DL/2 Normal DL/2 Log-Transformed
Mean in Original Scale 50.3 Mean in Log Scale 3.182
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
A B C D E F G H I J K L
Warning: Only one distinct data value was detected! ProUCL (or any other software) should not be used on such a data set! It is suggested to use alternative site specific values determined by the Project Team to estimate environmental parameters (e.g., EPC, BTV).
The data set for variable n-Butylbenzene was not processed! Number of Detects 1 Number of Non-Detects 39
Number of Distinct Detects 1 Number of Distinct Non-Detects 1 General Statistics
Total Number of Observations 40 Number of Distinct Observations 2 Number of Bootstrap Operations 2000
n-Butylbenzene
From File Soil Vapor TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:36:18 AM 1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
A B C D E F G H I J K L
Variance (KM) 970308 SE of Mean (KM) 220.3
Estimates of Gamma Parameters using KM Estimates
Mean (KM) 218.9 SD (KM) 985
Mean (detects) 4225
Theta hat (MLE) 625.4 Theta star (bias corrected MLE) N/A nu hat (MLE) 27.02 nu star (bias corrected) N/A
Gamma GOF Tests on Detected Observations Only
Not Enough Data to Perform GOF Test
Gamma Statistics on Detected Data Only
k hat (MLE) 6.755 k star (bias corrected MLE) N/A
97.5% KM Chebyshev UCL 1594 99% KM Chebyshev UCL 2410
95% KM (z) UCL 581.1 95% KM Bootstrap t UCL N/A
90% KM Chebyshev UCL 879.6 95% KM Chebyshev UCL 1179
KM SD 985 95% KM (BCA) UCL N/A
95% KM (t) UCL 590 95% KM (Percentile Bootstrap) UCL N/A Not Enough Data to Perform GOF Test
Kaplan-Meier (KM) Statistics using Normal Critical Values and other Nonparametric UCLs KM Mean 218.9 KM Standard Error of Mean 220.3
Warning: Data set has only 2 Detected Values.
This is not enough to compute meaningful or reliable statistics and estimates.
Normal GOF Test on Detects Only
Mean of Logged Detects 8.273 SD of Logged Detects 0.558 Median Detects 4225 CV Detects 0.531
Skewness Detects N/A Kurtosis Detects N/A
Variance Detects 5024450 Percent Non-Detects 95%
Mean Detects 4225 SD Detects 2242
Minimum Detect 2640 Minimum Non-Detect 8
Maximum Detect 5810 Maximum Non-Detect 8
Number of Detects 2 Number of Non-Detects 38
Number of Distinct Detects 2 Number of Distinct Non-Detects 1 General Statistics
Total Number of Observations 40 Number of Distinct Observations 3 Number of Bootstrap Operations 2000
n-Propylbenzene
From File Soil Vapor TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:43:50 AM 51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 90
91 92
93 94
95 96
97 A B C D E F G H I J K L
Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.
Recommendations are based upon data size, data distribution, and skewness.
These recommendations are based upon the results of the simulation studies summarized in Singh, Maichle, and Lee (2006).
However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.
Suggested UCL to Use
95% KM (Chebyshev) UCL 1179
DL/2 is not a recommended method, provided for comparisons and historical reasons Nonparametric Distribution Free UCL Statistics
Data do not follow a Discernible Distribution at 5% Significance Level SD in Original Scale 998.4 SD in Log Scale 1.523
95% t UCL (Assumes normality) 481 95% H-Stat UCL 38.13
DL/2 Statistics
DL/2 Normal DL/2 Log-Transformed
Mean in Original Scale 215.1 Mean in Log Scale 1.731
KM SD (logged) 1.353 95% Critical H Value (KM-Log) 2.849 KM Standard Error of Mean (logged) 0.302
KM SD (logged) 1.353 95% Critical H Value (KM-Log) 2.849 KM Standard Error of Mean (logged) 0.302 95% H-UCL (KM -Log) 50.46 Statistics using KM estimates on Logged Data and Assuming Lognormal Distribution KM Mean (logged) 2.389 KM Geo Mean 10.9
95% BCA Bootstrap UCL 752.1 95% Bootstrap t UCL 1513
95% H-UCL (Log ROS) 3260
SD in Original Scale 997.2 SD in Log Scale 2.544
95% t UCL (assumes normality of ROS data) 567.3 95% Percentile Bootstrap UCL 590.5 Lognormal ROS Statistics Using Imputed Non-Detects
Mean in Original Scale 301.7 Mean in Log Scale 2.977
95% Gamma Adjusted KM-UCL (use when k<=1 and 15 < n < 50) Lognormal GOF Test on Detected Observations Only
Not Enough Data to Perform GOF Test
Approximate Chi Square Value (4.99, α) 1.146 Adjusted Chi Square Value (4.99, β) 1.08 95% Gamma Approximate KM-UCL (use when n>=50) 952.4 95% Gamma Adjusted KM-UCL (use when n<50) 1011 Gamma Kaplan-Meier (KM) Statistics
Adjusted Level of Significance (β) 0.044
80% gamma percentile (KM) 58.66 90% gamma percentile (KM) 427.2 95% gamma percentile (KM) 1236 99% gamma percentile (KM) 4343 nu hat (KM) 3.949 nu star (KM) 4.986
theta hat (KM) 4434 theta star (KM) 3511
k hat (KM) 0.0494 k star (KM) 0.0623
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
A B C D E F G H I J K L
Variance (KM) 4670 SE of Mean (KM) 15.28
Estimates of Gamma Parameters using KM Estimates
Mean (KM) 20.73 SD (KM) 68.34
Mean (detects) 262.5
Theta hat (MLE) 149.2 Theta star (bias corrected MLE) N/A nu hat (MLE) 7.038 nu star (bias corrected) N/A
Gamma GOF Tests on Detected Observations Only
Not Enough Data to Perform GOF Test
Gamma Statistics on Detected Data Only
k hat (MLE) 1.76 k star (bias corrected MLE) N/A
97.5% KM Chebyshev UCL 116.1 99% KM Chebyshev UCL 172.8 95% KM (z) UCL 45.86 95% KM Bootstrap t UCL N/A
90% KM Chebyshev UCL 66.57 95% KM Chebyshev UCL 87.33
KM SD 68.34 95% KM (BCA) UCL N/A
95% KM (t) UCL 46.47 95% KM (Percentile Bootstrap) UCL N/A Not Enough Data to Perform GOF Test
Kaplan-Meier (KM) Statistics using Normal Critical Values and other Nonparametric UCLs KM Mean 20.73 KM Standard Error of Mean 15.28
Warning: Data set has only 2 Detected Values.
This is not enough to compute meaningful or reliable statistics and estimates.
Normal GOF Test on Detects Only
Mean of Logged Detects 5.26 SD of Logged Detects 1.173
Median Detects 262.5 CV Detects 0.962
Skewness Detects N/A Kurtosis Detects N/A
Variance Detects 63725 Percent Non-Detects 95%
Mean Detects 262.5 SD Detects 252.4
Minimum Detect 84 Minimum Non-Detect 8
Maximum Detect 441 Maximum Non-Detect 8
Number of Detects 2 Number of Non-Detects 38
Number of Distinct Detects 2 Number of Distinct Non-Detects 1 General Statistics
Total Number of Observations 40 Number of Distinct Observations 3 Number of Bootstrap Operations 2000
o-Xylene
From File Soil Vapor TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:45:24 AM 51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 90
91 92
93 94
95 96
97 A B C D E F G H I J K L
Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.
Recommendations are based upon data size, data distribution, and skewness.
These recommendations are based upon the results of the simulation studies summarized in Singh, Maichle, and Lee (2006).
However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.
Suggested UCL to Use
95% KM (Chebyshev) UCL 87.33
DL/2 is not a recommended method, provided for comparisons and historical reasons Nonparametric Distribution Free UCL Statistics
Data do not follow a Discernible Distribution at 5% Significance Level SD in Original Scale 69.92 SD in Log Scale 0.875
95% t UCL (Assumes normality) 35.55 95% H-Stat UCL 9.788 DL/2 Statistics
DL/2 Normal DL/2 Log-Transformed
Mean in Original Scale 16.93 Mean in Log Scale 1.58
KM SD (logged) 0.718 95% Critical H Value (KM-Log) 2.108 KM Standard Error of Mean (logged) 0.16
KM SD (logged) 0.718 95% Critical H Value (KM-Log) 2.108 KM Standard Error of Mean (logged) 0.16 95% H-UCL (KM -Log) 15.46 Statistics using KM estimates on Logged Data and Assuming Lognormal Distribution KM Mean (logged) 2.238 KM Geo Mean 9.379
95% BCA Bootstrap UCL 50.97 95% Bootstrap t UCL 637.4
95% H-UCL (Log ROS) 11636631
SD in Original Scale 70.58 SD in Log Scale 5.348
95% t UCL (assumes normality of ROS data) 32.37 95% Percentile Bootstrap UCL 35.33 Lognormal ROS Statistics Using Imputed Non-Detects
Mean in Original Scale 13.57 Mean in Log Scale -5.873
95% Gamma Adjusted KM-UCL (use when k<=1 and 15 < n < 50) Lognormal GOF Test on Detected Observations Only
Not Enough Data to Perform GOF Test
Approximate Chi Square Value (8.14, α) 2.816 Adjusted Chi Square Value (8.14, β) 2.7 95% Gamma Approximate KM-UCL (use when n>=50) 59.9 95% Gamma Adjusted KM-UCL (use when n<50) 62.48 Gamma Kaplan-Meier (KM) Statistics
Adjusted Level of Significance (β) 0.044
80% gamma percentile (KM) 14.74 90% gamma percentile (KM) 55.55 95% gamma percentile (KM) 120.2 99% gamma percentile (KM) 326.4 nu hat (KM) 7.359 nu star (KM) 8.14
theta hat (KM) 225.3 theta star (KM) 203.7
k hat (KM) 0.092 k star (KM) 0.102
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
A B C D E F G H I J K L
Warning: Only one distinct data value was detected! ProUCL (or any other software) should not be used on such a data set! It is suggested to use alternative site specific values determined by the Project Team to estimate environmental parameters (e.g., EPC, BTV).
The data set for variable sec-Butylbenzene was not processed! Number of Detects 1 Number of Non-Detects 39
Number of Distinct Detects 1 Number of Distinct Non-Detects 1 General Statistics
Total Number of Observations 40 Number of Distinct Observations 2 Number of Bootstrap Operations 2000
sec-Butylbenzene
From File Soil Vapor TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:37:01 AM 1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
A B C D E F G H I J K L
Warning: Only one distinct data value was detected! ProUCL (or any other software) should not be used on such a data set! It is suggested to use alternative site specific values determined by the Project Team to estimate environmental parameters (e.g., EPC, BTV).
The data set for variable Se was not processed!
Number of Detects 1 Number of Non-Detects 56
Number of Distinct Detects 1 Number of Distinct Non-Detects 1 General Statistics
Total Number of Observations 57 Number of Distinct Observations 2 Number of Bootstrap Operations 2000
Se
From File Metals in Soil TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:34:39 AM 1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
A B C D E F G H I J K L
Mean (detects) 19.6
Theta hat (MLE) 4.987 Theta star (bias corrected MLE) 5.624 nu hat (MLE) 196.5 nu star (bias corrected) 174.2
Detected data appear Gamma Distributed at 5% Significance Level Gamma Statistics on Detected Data Only
k hat (MLE) 3.93 k star (bias corrected MLE) 3.485
K-S Test Statistic 0.127 Kolmogorov-Smirnov GOF
5% K-S Critical Value 0.175 Detected data appear Gamma Distributed at 5% Significance Level Gamma GOF Tests on Detected Observations Only
A-D Test Statistic 0.464 Anderson-Darling GOF Test
5% A-D Critical Value 0.749 Detected data appear Gamma Distributed at 5% Significance Level
97.5% KM Chebyshev UCL 25.01 99% KM Chebyshev UCL 30.81 95% KM (z) UCL 17.82 95% KM Bootstrap t UCL 18.28
90% KM Chebyshev UCL 19.94 95% KM Chebyshev UCL 22.07
KM SD 9.69 95% KM (BCA) UCL 17.65
95% KM (t) UCL 17.88 95% KM (Percentile Bootstrap) UCL 17.85 Detected Data appear Approximate Normal at 5% Significance Level Kaplan-Meier (KM) Statistics using Normal Critical Values and other Nonparametric UCLs KM Mean 15.25 KM Standard Error of Mean 1.564
Lilliefors Test Statistic 0.162 Lilliefors GOF Test
5% Lilliefors Critical Value 0.173 Detected Data appear Normal at 5% Significance Level Normal GOF Test on Detects Only
Shapiro Wilk Test Statistic 0.911 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.918 Detected Data Not Normal at 5% Significance Level Mean of Logged Detects 2.843 SD of Logged Detects 0.532 Median Detects 17 CV Detects 0.52
Skewness Detects 0.674 Kurtosis Detects -0.616
Variance Detects 103.9 Percent Non-Detects 37.5%
Mean Detects 19.6 SD Detects 10.19
Minimum Detect 8 Minimum Non-Detect 8
Maximum Detect 42 Maximum Non-Detect 8
Number of Detects 25 Number of Non-Detects 15
Number of Distinct Detects 18 Number of Distinct Non-Detects 1 General Statistics
Total Number of Observations 40 Number of Distinct Observations 18 Number of Bootstrap Operations 2000
Tetrachloroethene
From File Soil Vapor TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:44:14 AM 51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 90
91 92
93 94
95 96
97 98
99 100
A B C D E F G H I J K L
KM SD (logged) 0.553 95% Critical H Value (KM-Log) 1.963 KM Standard Error of Mean (logged) 0.0893
KM SD (logged) 0.553 95% Critical H Value (KM-Log) 1.963 KM Standard Error of Mean (logged) 0.0893 95% H-UCL (KM -Log) 17.88 Statistics using KM estimates on Logged Data and Assuming Lognormal Distribution KM Mean (logged) 2.557 KM Geo Mean 12.89
95% BCA Bootstrap UCL 17.1 95% Bootstrap t UCL 17.42
95% H-UCL (Log ROS) 19.3
SD in Original Scale 10.83 SD in Log Scale 0.813
95% t UCL (assumes normality of ROS data) 16.95 95% Percentile Bootstrap UCL 16.92 Detected Data appear Lognormal at 5% Significance Level Lognormal ROS Statistics Using Imputed Non-Detects
Mean in Original Scale 14.07 Mean in Log Scale 2.342
Lilliefors Test Statistic 0.125 Lilliefors GOF Test
5% Lilliefors Critical Value 0.173 Detected Data appear Lognormal at 5% Significance Level Lognormal GOF Test on Detected Observations Only
Shapiro Wilk Test Statistic 0.937 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.918 Detected Data appear Lognormal at 5% Significance Level 95% Gamma Approximate KM-UCL (use when n>=50) 18.26 95% Gamma Adjusted KM-UCL (use when n<50) 18.38 Gamma Kaplan-Meier (KM) Statistics
Approximate Chi Square Value (184.63, α) 154.2 Adjusted Chi Square Value (184.63, β) 153.2 80% gamma percentile (KM) 22.45 90% gamma percentile (KM) 28.69 95% gamma percentile (KM) 34.59 99% gamma percentile (KM) 47.58 nu hat (KM) 198.2 nu star (KM) 184.6
theta hat (KM) 6.157 theta star (KM) 6.608
Variance (KM) 93.89 SE of Mean (KM) 1.564
k hat (KM) 2.477 k star (KM) 2.308
Estimates of Gamma Parameters using KM Estimates
Mean (KM) 15.25 SD (KM) 9.69
Approximate Chi Square Value (35.67, α) 23 Adjusted Chi Square Value (35.67, β) 22.62 95% Gamma Approximate UCL (use when n>=50) 20.02 95% Gamma Adjusted UCL (use when n<50) 20.36 nu hat (MLE) 37.12 nu star (bias corrected) 35.67
Adjusted Level of Significance (β) 0.044
k hat (MLE) 0.464 k star (bias corrected MLE) 0.446
Theta hat (MLE) 27.83 Theta star (bias corrected MLE) 28.96 Maximum 42 Median 9.5
SD 11.92 CV 0.923
For gamma distributed detected data, BTVs and UCLs may be computed using gamma distribution on KM estimates Minimum 0.01 Mean 12.91
Gamma ROS Statistics using Imputed Non-Detects
GROS may not be used when data set has > 50% NDs with many tied observations at multiple DLs GROS may not be used when kstar of detects is small such as <1.0, especially when the sample size is small (e.g., <15-20) For such situations, GROS method may yield incorrect values of UCLs and BTVs This is especially true when the sample size is small.
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
A B C D E F G H I J K L
Recommendations are based upon data size, data distribution, and skewness.
These recommendations are based upon the results of the simulation studies summarized in Singh, Maichle, and Lee (2006).
However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.
When a data set follows an approximate (e.g., normal) distribution passing one of the GOF test When applicable, it is suggested to use a UCL based upon a distribution (e.g., gamma) passing both GOF tests in ProUCL Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.
Suggested UCL to Use
95% KM (t) UCL 17.88
DL/2 is not a recommended method, provided for comparisons and historical reasons Nonparametric Distribution Free UCL Statistics
Detected Data appear Approximate Normal Distributed at 5% Significance Level SD in Original Scale 11.07 SD in Log Scale 0.827
95% t UCL (Assumes normality) 16.7 95% H-Stat UCL 18.78 DL/2 Statistics
DL/2 Normal DL/2 Log-Transformed
Mean in Original Scale 13.75 Mean in Log Scale 2.297
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42
43 44
45 46
47 48
49 50
A B C D E F G H I J K L
Mean (detects) 619.6
Theta hat (MLE) 2380 Theta star (bias corrected MLE) 2539 nu hat (MLE) 3.645 nu star (bias corrected) 3.416
Detected Data Not Gamma Distributed at 5% Significance Level Gamma Statistics on Detected Data Only
k hat (MLE) 0.26 k star (bias corrected MLE) 0.244
K-S Test Statistic 0.467 Kolmogorov-Smirnov GOF
5% K-S Critical Value 0.338 Detected Data Not Gamma Distributed at 5% Significance Level Gamma GOF Tests on Detected Observations Only
A-D Test Statistic 1.712 Anderson-Darling GOF Test
5% A-D Critical Value 0.799 Detected Data Not Gamma Distributed at 5% Significance Level
97.5% KM Chebyshev UCL 814.4 99% KM Chebyshev UCL 1229
95% KM (z) UCL 299.2 95% KM Bootstrap t UCL 20591
90% KM Chebyshev UCL 451 95% KM Chebyshev UCL 603.2
KM SD 655.8 95% KM (BCA) UCL 326
95% KM (t) UCL 303.7 95% KM (Percentile Bootstrap) UCL 324.8 Detected Data Not Normal at 5% Significance Level
Kaplan-Meier (KM) Statistics using Normal Critical Values and other Nonparametric UCLs KM Mean 115 KM Standard Error of Mean 112
Lilliefors Test Statistic 0.499 Lilliefors GOF Test
5% Lilliefors Critical Value 0.304 Detected Data Not Normal at 5% Significance Level Normal GOF Test on Detects Only
Shapiro Wilk Test Statistic 0.459 Shapiro Wilk GOF Test 5% Shapiro Wilk Critical Value 0.803 Detected Data Not Normal at 5% Significance Level Mean of Logged Detects 3.719 SD of Logged Detects 2.085 Median Detects 16 CV Detects 2.555
Skewness Detects 2.645 Kurtosis Detects 6.999
Variance Detects 2506738 Percent Non-Detects 82.5%
Mean Detects 619.6 SD Detects 1583
Minimum Detect 13 Minimum Non-Detect 8
Maximum Detect 4210 Maximum Non-Detect 8
Number of Detects 7 Number of Non-Detects 33
Number of Distinct Detects 7 Number of Distinct Non-Detects 1 General Statistics
Total Number of Observations 40 Number of Distinct Observations 8 Number of Bootstrap Operations 2000
Toluene
From File Soil Vapor TCNW.xls
Full Precision OFF
Confidence Coefficient 95%
UCL Statistics for Data Sets with Non-Detects
User Selected Options
Date/Time of Computation ProUCL 5.18/7/2021 10:44:37 AM 51 52
53 54
55 56
57 58
59 60
61 62
63 64
65 66
67 68
69 70
71 72
73 74
75 76
77 78
79 80
81 82
83 84
85 86
87 88
89 90
91 92
93 94
95 96
97 98
99 100
A B C D E F G H I J K L
KM SD (logged) 1.02 95% Critical H Value (KM-Log) 2.431 KM SD (logged) 1.02 95% Critical H Value (KM-Log) 2.431 KM Standard Error of Mean (logged) 0.174 95% H-UCL (KM -Log) 26.66 Statistics using KM estimates on Logged Data and Assuming Lognormal Distribution KM Mean (logged) 2.366 KM Geo Mean 10.66
95% BCA Bootstrap UCL 425.4 95% Bootstrap t UCL 13248
95% H-UCL (Log ROS) 2938285
SD in Original Scale 665.2 SD in Log Scale 4.878
95% t UCL (assumes normality of ROS data) 285.8 95% Percentile Bootstrap UCL 318.8 Lognormal ROS Statistics Using Imputed Non-Detects
Mean in Original Scale 108.6 Mean in Log Scale -3.556
5% Lilliefors Critical Value 0.304 Detected Data Not Lognormal at 5% Significance Level Detected Data Not Lognormal at 5% Significance Level
5% Shapiro Wilk Critical Value 0.803 Detected Data Not Lognormal at 5% Significance Level Lilliefors Test Statistic 0.345 Lilliefors GOF Test
Lognormal GOF Test on Detected Observations Only
Shapiro Wilk Test Statistic 0.62 Shapiro Wilk GOF Test
95% Gamma Approximate KM-UCL (use when n>=50) 723.4 95% Gamma Adjusted KM-UCL (use when n<50) 778.6 95% Gamma Adjusted KM-UCL (use when k<=1 and 15 < n < 50) Gamma Kaplan-Meier (KM) Statistics
Approximate Chi Square Value (3.61, α) 0.574 Adjusted Chi Square Value (3.61, β) 0.533 80% gamma percentile (KM) 10.61 90% gamma percentile (KM) 152 95% gamma percentile (KM) 586.9 99% gamma percentile (KM) 2603 nu hat (KM) 2.461 nu star (KM) 3.61
theta hat (KM) 3738 theta star (KM) 2549
Variance (KM) 430010 SE of Mean (KM) 112
k hat (KM) 0.0308 k star (KM) 0.0451
Estimates of Gamma Parameters using KM Estimates
Mean (KM) 115 SD (KM) 655.8
Approximate Chi Square Value (8.97, α) 3.311 Adjusted Chi Square Value (8.97, β) 3.183 95% Gamma Approximate UCL (use when n>=50) 293.9 95% Gamma Adjusted UCL (use when n<50) 305.7 nu hat (MLE) 8.259 nu star (bias corrected) 8.973
Adjusted Level of Significance (β) 0.044
k hat (MLE) 0.103 k star (bias corrected MLE) 0.112
Theta hat (MLE) 1050 Theta star (bias corrected MLE) 966.7 Maximum 4210 Median 0.01
SD 665.2 CV 6.135
For gamma distributed detected data, BTVs and UCLs may be computed using gamma distribution on KM estimates Minimum 0.01 Mean 108.4
Gamma ROS Statistics using Imputed Non-Detects
GROS may not be used when data set has > 50% NDs with many tied observations at multiple DLs GROS may not be used when kstar of detects is small such as <1.0, especially when the sample size is small (e.g., <15-20) For such situations, GROS method may yield incorrect values of UCLs and BTVs This is especially true when the sample size is small.
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
A B C D E F G H I J K L
Note: Suggestions regarding the selection of a 95% UCL are provided to help the user to select the most appropriate 95% UCL.
Recommendations are based upon data size, data distribution, and skewness.
These recommendations are based upon the results of the simulation studies summarized in Singh, Maichle, and Lee (2006).
However, simulations results will not cover all Real World data sets; for additional insight the user may want to consult a statistician.
Suggested UCL to Use
97.5% KM (Chebyshev) UCL 814.4
DL/2 is not a recommended method, provided for comparisons and historical reasons Nonparametric Distribution Free UCL Statistics
Data do not follow a Discernible Distribution at 5% Significance Level SD in Original Scale 664.7 SD in Log Scale 1.214
95% t UCL (Assumes normality) 288.8 95% H-Stat UCL 21.13 DL/2 Statistics
DL/2 Normal DL/2 Log-Transformed
Mean in Original Scale 111.7 Mean in Log Scale 1.795
KM Standard Error of Mean (logged) 0.174
APPENDIX G
ESL Model Results
Soil Vapor – Residential
1 of 1 Tier-2 Site Spec. ESLs (T2-1)
Vegetation Level:
Groundwater Use:
Select Site Contaminants:
ESL Basis ESL Basis ESL Basis ESL Basis ESL Basis
Soil (mg/kg): 2.5E-02 Leaching 4.3E-01 Leaching 1.9E-01 Leaching 2.5E+00 Leaching 1.2E+00 Leaching Groundwater (μg/L): 4.2E-01 VI HHR 3.5E+00 VI HHR 7.8E+00 VI HHR 4.5E+02 VI HHR 4.6E+00 VI HHR Subslab/ Soil Gas (μg/m³): 3.2E+00 VI HHR 3.7E+01 VI HHR 3.4E+01 VI HHR 3.6E+02 VI HHR 2.8E+00 VI HHR Indoor Air (μg/m³): 9.7E-02 Dir Exp 1.1E+00 Dir Exp 1.0E+00 Dir Exp 1.1E+01 Dir Exp 8.3E-02 Dir Exp Note:
Groundwater depth is no longer a toggle for evaluating vapor intrusion. See the notes in Workbook Table GW-3 and the User's Guide Chapter 5 for further information.
Tier 2 Scenario Toggles
Soil Contamination Depth:
(Shallow ≤ 10ft bgs < Deep)
Tier 2 ESLs:
Land Use:
MCL Priority over Risk-Based:
Discharge to Surface Water:
Contaminant 5
Benzene Ethylbenzene Methylene chloride Methyl tertiary butyl ether (MTBE) Naphthalene [PAH]
Contaminant 1 Contaminant 2 Contaminant 3 Contaminant 4 Click in cell and use pull-down boxes to make selection.
Table T2-1: Tier 2 ESLs
Site-Specific Input and Output 2019 (Rev. 2)
Residential
Minimal
Nondrinking Water Resource
No
No Discharge Expected
Shallow & Deep Soil
Contaminant 1 Contaminant 2 Contaminant 3 Contaminant 4 Contaminant 5 Contaminant inputs from T2-1: Benzene Ethylbenzene Methylene chloride Methyl tertiary butyl ether (MTBE) Naphthalene [PAH]
Soil Concentration (mg/kg) - dry weight:
Groundwater Concentration (μg/L):
1,558.00 2,730 10 121,000 5,810
Indoor Air Concentration (μg/m3):
Soil Gas VI Attenuation Factor (Use 0.03 for Screening): 0.0300 Cancer Risk: Benzene Ethylbenzene Methylene chloride Methyl tertiary butyl ether (MTBE Naphthalene [PAH] Cumulative Risk Soil Exposure Risk: -- -- -- -- -- --
Tapwater Exposure Risk: -- -- -- -- -- --
Current* Vapor Intrusion Exposure Risk: 4.8E-04 7.3E-05 3.0E-07 3.4E-04 2.1E-03 3.0E-03 Basis: Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Future** Vapor Intrusion Exposure Risk: 4.8E-04 7.3E-05 3.0E-07 3.4E-04 2.1E-03 3.0E-03 Basis: Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Noncancer Hazard: Benzene Ethylbenzene Methylene chloride Methyl tertiary butyl ether (MTBE Naphthalene [PAH] Cumulative Hazard Soil Exposure Hazard: -- -- -- -- -- --
Tap Water Exposure Hazard: -- -- -- -- -- --
Current* Vapor Intrusion Exposure Hazard: 1.5E+01 7.9E-02 7.2E-04 1.2E+00 5.6E+01 7.2E+01 Basis: Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Future** Vapor Intrusion Exposure Hazard: 1.5E+01 7.9E-02 7.2E-04 1.2E+00 5.6E+01 7.2E+01 Basis: Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Notes:
* Current (VI exposure to current occupants of existing buildings) – Primarily based on indoor air data. See User's Guide Chapter 5 for further information.
In the absence of indoor air data, subslab/soil gas or groundwater data is used to predict current indoor air concentrations.
Subslab/soil gas data is given priority over groundwater data for current exposure calculations. The cumulative risk calculation follows the same hierarchy. ** Future (VI exposure to future occupants of existing or future buildings) – Primarily based on subslab/soil gas data. See User's Guide Chapter 5 for further information.
In the absence of subslab/soil gas data, groundwater data is used to predict future indoor air concentrations. The cumulative risk calculation follows the same hierarchy.
Selected Site Scenario (from T2-1)
Land Use: Residential
Vegetation Level: Minimal
Soil Contamination Depth: Shallow & Deep Soil
Groundwater Use: Nondrinking Water
Resource
MCL Priority vs Risk-Based: No
Discharge to Surface Water: No Discharge Expected
Subslab/ Soil Gas Concentration (μg/m3):
2019 (Rev. 2) Table T2-2: Tier 2 – Site-Specific Cumulative Risk and Hazard Calculator Cumulative cancer risk and noncancer hazard are not automatically calculated across pathways because exposure via multiple pathways typically is not simultaneous. This may be performed separately as part of a site-specific evaluation. See the User's Guide Section 3.3 (Addressing Cumulative Risk and Hazard).
Enter Site Data (Leave blank when no data exits)
1 of 1 Tier-2 Site Spec. ESLs (T2-1)
Vegetation Level:
Groundwater Use:
Select Site Contaminants:
ESL Basis ESL Basis ESL Basis ESL Basis ESL Basis
Soil (mg/kg): 1.0E+02 Odor/Nuis 8.0E-02 Leaching 1.0E+01 Leaching 1.0E+01 Leaching #N/A #N/A Groundwater (μg/L): 5.0E+03 Odor/Nuis 6.4E-01 VI HHR 4.0E+02 Odor/Nuis 3.9E+02 VI HHR #N/A #N/A Subslab/ Soil Gas (μg/m³): 3.3E+03 VI Odor/Nuis 1.5E+01 VI HHR 1.0E+04 VI HHR 3.5E+03 VI HHR #N/A #N/A Indoor Air (μg/m³): 1.0E+02 Odor/Nuis 4.6E-01 Dir Exp 3.1E+02 Dir Exp 1.0E+02 Dir Exp #N/A #N/A Note:
Groundwater depth is no longer a toggle for evaluating vapor intrusion. See the notes in Workbook Table GW-3 and the User's Guide Chapter 5 for further information.
Tier 2 Scenario Toggles
Soil Contamination Depth:
(Shallow ≤ 10ft bgs < Deep)
Tier 2 ESLs:
Land Use:
MCL Priority over Risk-Based:
Discharge to Surface Water:
Contaminant 5
Petroleum - Gasoline Tetrachloroethene Toluene Xylenes
Contaminant 1 Contaminant 2 Contaminant 3 Contaminant 4 Click in cell and use pull-down boxes to make selection.
Table T2-1: Tier 2 ESLs
Site-Specific Input and Output 2019 (Rev. 2)
Residential
Minimal
Nondrinking Water Resource
No
No Discharge Expected
Shallow & Deep Soil
Contaminant 1 Contaminant 2 Contaminant 3 Contaminant 4 Contaminant 5 Contaminant inputs from T2-1: Petroleum - Gasoline Tetrachloroethene Toluene Xylenes 0 Soil Concentration (mg/kg) - dry weight:
Groundwater Concentration (μg/L):
8,550,284.00 18 814 2,161
Indoor Air Concentration (μg/m3):
Soil Gas VI Attenuation Factor (Use 0.03 for Screening): 0.0300 Cancer Risk: Petroleum - Gasoline Tetrachloroethene Toluene Xylenes 0.00 Cumulative Risk Soil Exposure Risk: -- -- -- -- #N/A #N/A
Tapwater Exposure Risk: -- -- -- -- #N/A #N/A
Current* Vapor Intrusion Exposure Risk: -- 1.2E-06 -- -- -- 1.2E-06 Basis: Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI -- Subslab/Soil Gas VI Future** Vapor Intrusion Exposure Risk: -- 1.2E-06 -- -- -- 1.2E-06 Basis: Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI -- Subslab/Soil Gas VI Noncancer Hazard: Petroleum - Gasoline Tetrachloroethene Toluene Xylenes 0 Cumulative Hazard Soil Exposure Hazard: -- -- -- -- #N/A #N/A
Tap Water Exposure Hazard: -- -- -- -- #N/A #N/A
Current* Vapor Intrusion Exposure Hazard: 4.3E+02 1.3E-02 7.8E-02 6.2E-01 -- 4.3E+02 Basis: Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI -- Subslab/Soil Gas VI Future** Vapor Intrusion Exposure Hazard: 4.3E+02 1.3E-02 7.8E-02 6.2E-01 -- 4.3E+02 Basis: Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI -- Subslab/Soil Gas VI Notes:
* Current (VI exposure to current occupants of existing buildings) – Primarily based on indoor air data. See User's Guide Chapter 5 for further information.
In the absence of indoor air data, subslab/soil gas or groundwater data is used to predict current indoor air concentrations.
Subslab/soil gas data is given priority over groundwater data for current exposure calculations. The cumulative risk calculation follows the same hierarchy. ** Future (VI exposure to future occupants of existing or future buildings) – Primarily based on subslab/soil gas data. See User's Guide Chapter 5 for further information.
In the absence of subslab/soil gas data, groundwater data is used to predict future indoor air concentrations. The cumulative risk calculation follows the same hierarchy.
Selected Site Scenario (from T2-1)
Land Use: Residential
Vegetation Level: Minimal
Soil Contamination Depth: Shallow & Deep Soil
Groundwater Use: Nondrinking Water
Resource
MCL Priority vs Risk-Based: No
Discharge to Surface Water: No Discharge Expected
Subslab/ Soil Gas Concentration (μg/m3):
2019 (Rev. 2) Table T2-2: Tier 2 – Site-Specific Cumulative Risk and Hazard Calculator Cumulative cancer risk and noncancer hazard are not automatically calculated across pathways because exposure via multiple pathways typically is not simultaneous. This may be performed separately as part of a site-specific evaluation. See the User's Guide Section 3.3 (Addressing Cumulative Risk and Hazard).
Enter Site Data (Leave blank when no data exits)
APPENDIX H
ESL Model Results
Soil Vapor - Commercial
1 of 1 Tier-2 Site Spec. ESLs (T2-1)
Vegetation Level:
Groundwater Use:
Select Site Contaminants:
ESL Basis ESL Basis ESL Basis ESL Basis ESL Basis
Soil (mg/kg): 2.5E-02 Leaching 4.3E-01 Leaching 1.9E-01 Leaching 2.5E+00 Leaching 1.2E+00 Leaching Groundwater (μg/L): 1.8E+00 VI HHR 1.5E+01 VI HHR 9.4E+01 VI HHR 1.8E+03 Odor/Nuis 2.0E+01 VI HHR Subslab/ Soil Gas (μg/m³): 1.4E+01 VI HHR 1.6E+02 VI HHR 4.1E+02 VI HHR 1.6E+03 VI HHR 1.2E+01 VI HHR Indoor Air (μg/m³): 4.2E-01 Dir Exp 4.9E+00 Dir Exp 1.2E+01 Dir Exp 4.7E+01 Dir Exp 3.6E-01 Dir Exp Note:
Groundwater depth is no longer a toggle for evaluating vapor intrusion. See the notes in Workbook Table GW-3 and the User's Guide Chapter 5 for further information.
Click in cell and use pull-down boxes to make selection.
Table T2-1: Tier 2 ESLs
Site-Specific Input and Output 2019 (Rev. 2)
Commercial or Industrial
Minimal
Nondrinking Water Resource
No
No Discharge Expected
Shallow & Deep Soil
Contaminant 5
Benzene Ethylbenzene Methylene chloride Methyl tertiary butyl ether (MTBE) Naphthalene [PAH]
Contaminant 1 Contaminant 2 Contaminant 3 Contaminant 4 Tier 2 Scenario Toggles
Soil Contamination Depth:
(Shallow ≤ 10ft bgs < Deep)
Tier 2 ESLs:
Land Use:
MCL Priority over Risk-Based:
Discharge to Surface Water:
Contaminant 1 Contaminant 2 Contaminant 3 Contaminant 4 Contaminant 5 Contaminant inputs from T2-1: Benzene Ethylbenzene Methylene chloride Methyl tertiary butyl ether (MTBE) Naphthalene [PAH]
Soil Concentration (mg/kg) - dry weight:
Groundwater Concentration (μg/L):
1,558.00 2,730 10 121,000 5,810
Indoor Air Concentration (μg/m3):
Soil Gas VI Attenuation Factor (Use 0.03 for Screening): 0.0300 Cancer Risk: Benzene Ethylbenzene Methylene chloride Methyl tertiary butyl ether (MTBE Naphthalene [PAH] Cumulative Risk Soil Exposure Risk: -- -- -- -- -- --
Tapwater Exposure Risk: -- -- -- -- -- --
Current* Vapor Intrusion Exposure Risk: 1.1E-04 1.7E-05 2.5E-08 7.7E-05 4.8E-04 6.9E-04 Basis: Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Future** Vapor Intrusion Exposure Risk: 1.1E-04 1.7E-05 2.5E-08 7.7E-05 4.8E-04 6.9E-04 Basis: Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Noncancer Hazard: Benzene Ethylbenzene Methylene chloride Methyl tertiary butyl ether (MTBE Naphthalene [PAH] Cumulative Hazard Soil Exposure Hazard: -- -- -- -- -- --
Tap Water Exposure Hazard: -- -- -- -- -- --
Current* Vapor Intrusion Exposure Hazard: 3.6E+00 1.9E-02 1.7E-04 2.8E-01 1.3E+01 1.7E+01 Basis: Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Future** Vapor Intrusion Exposure Hazard: 3.6E+00 1.9E-02 1.7E-04 2.8E-01 1.3E+01 1.7E+01 Basis: Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Notes:
* Current (VI exposure to current occupants of existing buildings) – Primarily based on indoor air data. See User's Guide Chapter 5 for further information.
In the absence of indoor air data, subslab/soil gas or groundwater data is used to predict current indoor air concentrations.
Subslab/soil gas data is given priority over groundwater data for current exposure calculations. The cumulative risk calculation follows the same hierarchy. ** Future (VI exposure to future occupants of existing or future buildings) – Primarily based on subslab/soil gas data. See User's Guide Chapter 5 for further information.
In the absence of subslab/soil gas data, groundwater data is used to predict future indoor air concentrations. The cumulative risk calculation follows the same hierarchy.
Subslab/ Soil Gas Concentration (μg/m3):
2019 (Rev. 2) Table T2-2: Tier 2 – Site-Specific Cumulative Risk and Hazard Calculator Cumulative cancer risk and noncancer hazard are not automatically calculated across pathways because exposure via multiple pathways typically is not simultaneous. This may be performed separately as part of a site-specific evaluation. See the User's Guide Section 3.3 (Addressing Cumulative Risk and Hazard).
Enter Site Data (Leave blank when no data exits)
Selected Site Scenario (from T2-1)
Land Use: Commercial or Industrial
Vegetation Level: Minimal
Soil Contamination Depth: Shallow & Deep Soil
Groundwater Use: Nondrinking Water
Resource
MCL Priority vs Risk-Based: No
Discharge to Surface Water: No Discharge Expected
1 of 1 Tier-2 Site Spec. ESLs (T2-1)
Vegetation Level:
Groundwater Use:
Select Site Contaminants:
ESL Basis ESL Basis ESL Basis ESL Basis ESL Basis
Soil (mg/kg): 1.2E+02 Terrestrial Habitat 8.0E-02 Leaching 1.0E+01 Leaching 1.0E+01 Leaching #N/A #N/A Groundwater (μg/L): 5.0E+03 Odor/Nuis 2.8E+00 VI HHR 4.0E+02 Odor/Nuis 1.6E+03 VI HHR #N/A #N/A Subslab/ Soil Gas (μg/m³): 3.3E+03 VI Odor/Nuis 6.7E+01 VI HHR 4.4E+04 VI HHR 1.5E+04 VI HHR #N/A #N/A Indoor Air (μg/m³): 1.0E+02 Odor/Nuis 2.0E+00 Dir Exp 1.3E+03 Dir Exp 4.4E+02 Dir Exp #N/A #N/A Note:
Groundwater depth is no longer a toggle for evaluating vapor intrusion. See the notes in Workbook Table GW-3 and the User's Guide Chapter 5 for further information.
Click in cell and use pull-down boxes to make selection.
Table T2-1: Tier 2 ESLs
Site-Specific Input and Output 2019 (Rev. 2)
Commercial or Industrial
Minimal
Nondrinking Water Resource
No
No Discharge Expected
Shallow & Deep Soil
Contaminant 5
Petroleum - Gasoline Tetrachloroethene Toluene Xylenes
Contaminant 1 Contaminant 2 Contaminant 3 Contaminant 4 Tier 2 Scenario Toggles
Soil Contamination Depth:
(Shallow ≤ 10ft bgs < Deep)
Tier 2 ESLs:
Land Use:
MCL Priority over Risk-Based:
Discharge to Surface Water:
Contaminant 1 Contaminant 2 Contaminant 3 Contaminant 4 Contaminant 5 Contaminant inputs from T2-1: Petroleum - Gasoline Tetrachloroethene Toluene Xylenes 0 Soil Concentration (mg/kg) - dry weight:
Groundwater Concentration (μg/L):
8,550,284.00 18 814 2,161
Indoor Air Concentration (μg/m3):
Soil Gas VI Attenuation Factor (Use 0.03 for Screening): 0.0300 Cancer Risk: Petroleum - Gasoline Tetrachloroethene Toluene Xylenes 0.00 Cumulative Risk Soil Exposure Risk: -- -- -- -- #N/A #N/A
Tapwater Exposure Risk: -- -- -- -- #N/A #N/A
Current* Vapor Intrusion Exposure Risk: -- 2.7E-07 -- -- -- 2.7E-07 Basis: Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI -- Subslab/Soil Gas VI Future** Vapor Intrusion Exposure Risk: -- 2.7E-07 -- -- -- 2.7E-07 Basis: Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI -- Subslab/Soil Gas VI Noncancer Hazard: Petroleum - Gasoline Tetrachloroethene Toluene Xylenes 0 Cumulative Hazard Soil Exposure Hazard: -- -- -- -- #N/A #N/A
Tap Water Exposure Hazard: -- -- -- -- #N/A #N/A
Current* Vapor Intrusion Exposure Hazard: 1.0E+02 3.1E-03 1.9E-02 1.5E-01 -- 1.0E+02 Basis: Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI -- Subslab/Soil Gas VI Future** Vapor Intrusion Exposure Hazard: 1.0E+02 3.1E-03 1.9E-02 1.5E-01 -- 1.0E+02 Basis: Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI Subslab/Soil Gas VI -- Subslab/Soil Gas VI Notes:
* Current (VI exposure to current occupants of existing buildings) – Primarily based on indoor air data. See User's Guide Chapter 5 for further information.
In the absence of indoor air data, subslab/soil gas or groundwater data is used to predict current indoor air concentrations.
Subslab/soil gas data is given priority over groundwater data for current exposure calculations. The cumulative risk calculation follows the same hierarchy. ** Future (VI exposure to future occupants of existing or future buildings) – Primarily based on subslab/soil gas data. See User's Guide Chapter 5 for further information.
In the absence of subslab/soil gas data, groundwater data is used to predict future indoor air concentrations. The cumulative risk calculation follows the same hierarchy.
Subslab/ Soil Gas Concentration (μg/m3):
2019 (Rev. 2) Table T2-2: Tier 2 – Site-Specific Cumulative Risk and Hazard Calculator Cumulative cancer risk and noncancer hazard are not automatically calculated across pathways because exposure via multiple pathways typically is not simultaneous. This may be performed separately as part of a site-specific evaluation. See the User's Guide Section 3.3 (Addressing Cumulative Risk and Hazard).
Enter Site Data (Leave blank when no data exits)
Selected Site Scenario (from T2-1)
Land Use: Commercial or Industrial
Vegetation Level: Minimal
Soil Contamination Depth: Shallow & Deep Soil
Groundwater Use: Nondrinking Water
Resource
MCL Priority vs Risk-Based: No
Discharge to Surface Water: No Discharge Expected
APPENDIX I
VURAM
VERSION:
Construction Worker Quantitative Risk Assessment Report
DETAILED REPORT FOLLOWS
Total Hazard Index/Risk for All Media
Non-Cancer Adult Cancer
Total: 4.04E+00 Total: 9.18E-07
Exceeds Hazard Index! does not exceed cumulative risk
VURAM
Virginia Unified Risk Assessment Model
All Report Pages are Required for Risk Assessment Submission Virginia Department of Environmental Quality
Site Name: Town Center Northwest Signal Hill CA
1 1.00E-04
Risk Based Performance Criteria
Default Hazard Index Default Cumulative Risk-All Chemicals Program: Voluntary Remediation Program
F
2.2 Saturday, August 7, 2021 CHANGE Page 1 of 11
Voluntary Remediation Program
1 1.00E-06 1.00E-04
Risk Based Performance Criteria
Default Hazard Index Default Risk Individual Chemical Default Cumulative Risk-All Chemicals Site Name: Town Center Northwest Signal Hill CA
Program:
Construction
Air
ug/m3
0.51% 19.35%
Concentration : 1.56E+03
Mutagen:
RfDo:
RfCi: 8.00E-02
SFO:
IUR: 7.80E-06
Ingestion:
Dermal:
Inhalation: 2.08E-02
Ingestion:
Dermal:
Inhalation: 1.78E-07
Non-Cancer Adult Cancer
Total: 2.08E-02 Total: 1.78E-07
% Contribution to Media Risk
Calculated Hazard Quotient/Risk
Analyte: Benzene
CAS: 71-43-2
VOC: Y
ug/m3
0.00% 0.00%
Concentration : 6.49E+02
Mutagen:
RfDo:
RfCi:
SFO:
IUR:
Ingestion:
Dermal:
Inhalation:
Ingestion:
Dermal:
Inhalation:
Non-Cancer Adult Cancer
Total: 0.00E+00 Total: 0.00E+00
% Contribution to Media Risk
Calculated Hazard Quotient/Risk
Analyte: Butylbenzene, nCAS: 104-51-8
VOC: Y
ug/m3
0.00% 0.00%
Concentration : 2.38E+03
Mutagen:
RfDo:
RfCi:
SFO:
IUR:
Ingestion:
Dermal:
Inhalation:
Ingestion:
Dermal:
Inhalation:
Non-Cancer Adult Cancer
Total: 0.00E+00 Total: 0.00E+00
% Contribution to Media Risk
Calculated Hazard Quotient/Risk
Analyte: Butylbenzene, secCAS: 135-98-8
VOC: Y
Saturday, August 7, 2021 CHANGE Page 2 of 11
Voluntary Remediation Program
1 1.00E-06 1.00E-04
Risk Based Performance Criteria
Default Hazard Index Default Risk Individual Chemical Default Cumulative Risk-All Chemicals Site Name: Town Center Northwest Signal Hill CA
Program:
Construction
Air
ug/m3
0.85% 0.00%
Concentration : 4.29E+03
Mutagen:
RfDo:
RfCi: 9.00E-02
SFO:
IUR:
Ingestion:
Dermal:
Inhalation: 3.43E-02
Ingestion:
Dermal:
Inhalation:
Non-Cancer Adult Cancer
Total: 3.43E-02 Total: 0.00E+00
% Contribution to Media Risk
Calculated Hazard Quotient/Risk
Analyte: Cumene
CAS: 98-82-8
VOC: Y
ug/m3
0.00% 0.00%
Concentration : 5.10E+01
Mutagen:
RfDo:
RfCi:
SFO:
IUR:
Ingestion:
Dermal:
Inhalation:
Ingestion:
Dermal:
Inhalation:
Non-Cancer Adult Cancer
Total: 0.00E+00 Total: 0.00E+00
% Contribution to Media Risk
Calculated Hazard Quotient/Risk
Analyte: Dichloroethylene, 1,2-cisCAS: 156-59-2
VOC: Y
ug/m3
0.13% 0.00%
Concentration : 4.78E+03
Mutagen:
RfDo:
RfCi: 7.00E-01
SFO:
IUR:
Ingestion:
Dermal:
Inhalation: 5.33E-03
Ingestion:
Dermal:
Inhalation:
Non-Cancer Adult Cancer
Total: 5.33E-03 Total: 0.00E+00
% Contribution to Media Risk
Calculated Hazard Quotient/Risk
Analyte: Diisopropyl Ether
CAS: 108-20-3
VOC: Y
Saturday, August 7, 2021 CHANGE Page 3 of 11
Voluntary Remediation Program
1 1.00E-06 1.00E-04
Risk Based Performance Criteria
Default Hazard Index Default Risk Individual Chemical Default Cumulative Risk-All Chemicals Site Name: Town Center Northwest Signal Hill CA
Program:
Construction
Air
ug/m3
0.01% 8.31%
Concentration : 2.73E+03
Mutagen:
RfDo:
RfCi: 9.00E+00
SFO:
IUR: 2.50E-06
Ingestion:
Dermal:
Inhalation: 2.48E-04
Ingestion:
Dermal:
Inhalation: 7.63E-08
Non-Cancer Adult Cancer
Total: 2.48E-04 Total: 7.63E-08
% Contribution to Media Risk
Calculated Hazard Quotient/Risk
Analyte: Ethylbenzene
CAS: 100-41-4
VOC: Y
ug/m3
0.06% 0.00%
Concentration : 3.21E+02
Mutagen:
RfDo:
RfCi: 9.00E-02
SFO:
IUR:
Ingestion:
Dermal:
Inhalation: 2.38E-03
Ingestion:
Dermal:
Inhalation:
Non-Cancer Adult Cancer
Total: 2.38E-03 Total: 0.00E+00
% Contribution to Media Risk
Calculated Hazard Quotient/Risk
Analyte: isopropyltoluene
CAS: 99-87-6
VOC: Y
ug/m3
1.06% 42.11%
Concentration : 1.21E+05
Mutagen:
RfDo:
RfCi: 2.52E+00
SFO:
IUR: 2.60E-07
Ingestion:
Dermal:
Inhalation: 4.30E-02
Ingestion:
Dermal:
Inhalation: 3.87E-07
Non-Cancer Adult Cancer
Total: 4.30E-02 Total: 3.87E-07
% Contribution to Media Risk
Calculated Hazard Quotient/Risk
Analyte: Methyl tert-Butyl Ether (MTBE)
CAS: 1634-04-4
VOC: Y
Saturday, August 7, 2021 CHANGE Page 4 of 11
Voluntary Remediation Program
1 1.00E-06 1.00E-04
Risk Based Performance Criteria
Default Hazard Index Default Risk Individual Chemical Default Cumulative Risk-All Chemicals Site Name: Town Center Northwest Signal Hill CA
Program:
Construction
Air
ug/m3
0.00% 0.00%
Concentration : 1.01E+01
Mutagen: Y
RfDo:
RfCi: 1.04E+00
SFO:
IUR: 1.00E-08
Ingestion:
Dermal:
Inhalation: 1.15E-05
Ingestion:
Dermal:
Inhalation: 1.64E-12
Non-Cancer Adult Cancer
Total: 1.15E-05 Total: 1.64E-12
% Contribution to Media Risk
Calculated Hazard Quotient/Risk
Analyte: Methylene Chloride
CAS: 75-09-2
VOC: Y
ug/m3
4.92% 30.22%
Concentration : 8.26E+02
Mutagen:
RfDo:
RfCi: 3.00E-03
SFO:
IUR: 3.40E-05
Ingestion:
Dermal:
Inhalation: 1.99E-01
Ingestion:
Dermal:
Inhalation: 2.77E-07
Non-Cancer Adult Cancer
Total: 1.99E-01 Total: 2.77E-07
% Contribution to Media Risk
Calculated Hazard Quotient/Risk
Analyte: Naphthalene
CAS: 91-20-3
VOC: Y
ug/m3
0.10% 0.00%
Concentration : 5.81E+03
Mutagen:
RfDo:
RfCi: 1.00E+00
SFO:
IUR:
Ingestion:
Dermal:
Inhalation: 4.17E-03
Ingestion:
Dermal:
Inhalation:
Non-Cancer Adult Cancer
Total: 4.17E-03 Total: 0.00E+00
% Contribution to Media Risk
Calculated Hazard Quotient/Risk
Analyte: Propyl benzene
CAS: 103-65-1
VOC: Y
Saturday, August 7, 2021 CHANGE Page 5 of 11
Voluntary Remediation Program
1 1.00E-06 1.00E-04
Risk Based Performance Criteria
Default Hazard Index Default Risk Individual Chemical Default Cumulative Risk-All Chemicals Site Name: Town Center Northwest Signal Hill CA
Program:
Construction
Air
ug/m3
0.01% 0.00%
Concentration : 1.79E+01
Mutagen:
RfDo:
RfCi: 4.00E-02
SFO:
IUR: 2.60E-07
Ingestion:
Dermal:
Inhalation: 2.69E-04
Ingestion:
Dermal:
Inhalation: 3.83E-11
Non-Cancer Adult Cancer
Total: 2.69E-04 Total: 3.83E-11
% Contribution to Media Risk
Calculated Hazard Quotient/Risk
Analyte: Tetrachloroethylene
CAS: 127-18-4
VOC: Y
ug/m3
0.00% 0.00%
Concentration : 8.14E+02
Mutagen:
RfDo:
RfCi: 5.00E+00
SFO:
IUR:
Ingestion:
Dermal:
Inhalation: 1.51E-04
Ingestion:
Dermal:
Inhalation:
Non-Cancer Adult Cancer
Total: 1.51E-04 Total: 0.00E+00
% Contribution to Media Risk
Calculated Hazard Quotient/Risk
Analyte: Toluene
CAS: 108-88-3
VOC: Y
ug/m3
92.24% 0.00%
Concentration : 8.55E+06
Mutagen:
RfDo:
RfCi: 2.00E+00
SFO:
IUR:
Ingestion:
Dermal:
Inhalation: 3.73E+00
Ingestion:
Dermal:
Inhalation:
Non-Cancer Adult Cancer
Total: 3.73E+00 Total: 0.00E+00
% Contribution to Media Risk
Calculated Hazard Quotient/Risk
Analyte: Total Petroleum Hydrocarbons (Aliphatic Low)
CAS: E1790666
Exceeds Hazard!
VOC: Y
Saturday, August 7, 2021 CHANGE Page 6 of 11
Voluntary Remediation Program
1 1.00E-06 1.00E-04
Risk Based Performance Criteria
Default Hazard Index Default Risk Individual Chemical Default Cumulative Risk-All Chemicals Site Name: Town Center Northwest Signal Hill CA
Program:
Construction
Air
ug/m3
0.11% 0.00%
Concentration : 2.16E+03
Mutagen:
RfDo:
RfCi: 4.00E-01
SFO:
IUR:
Ingestion:
Dermal:
Inhalation: 4.41E-03
Ingestion:
Dermal:
Inhalation:
Non-Cancer Adult Cancer
Total: 4.41E-03 Total: 0.00E+00
% Contribution to Media Risk
Calculated Hazard Quotient/Risk
Analyte: Xylenes
CAS: 1330-20-7
VOC: Y
Total Calculated Hazard Index/Risk For Media:
Ingestion: 0.00E+00
Dermal: 0.00E+00
Inhalation: 4.04E+00
Ingestion: 0.00E+00
Dermal: 0.00E+00
Inhalation: 9.18E-07
Non-Cancer Adult Cancer
Total: 4.04E+00 Total: 9.18E-07
Air
Saturday, August 7, 2021 CHANGE Page 7 of 11
Voluntary Remediation Program
1 1.00E-06 1.00E-04
Risk Based Performance Criteria
Default Hazard Index Default Risk Individual Chemical Default Cumulative Risk-All Chemicals Site Name: Town Center Northwest Signal Hill CA
Program:
Construction
Ingestion: 0.00E+00
Dermal: 0.00E+00
Inhalation: 4.04E+00
Ingestion: 0.00E+00
Total Hazard Index/Risk for All Media
Dermal: 0.00E+00
Inhalation: 9.18E-07
Non-Cancer Adult Cancer
Total: 4.04E+00 Total: 9.18E-07
Exceeds Hazard Index! does not exceed cumulative risk
Saturday, August 7, 2021 CHANGE Page 8 of 11
Voluntary Remediation Program
1 1.00E-06 1.00E-04
Risk Based Performance Criteria
Default Hazard Index Default Risk Individual Chemical Default Cumulative Risk-All Chemicals Site Name: Town Center Northwest Signal Hill CA
Program:
Construction
Construction Exposure Default Values
Symbol Description Value Units
A Construction Worker Soil Inhalation Dispersion Constant - Virginia DEQ 14.0111(unitless) AFcw Construction Worker Soil Adherence Factor 0.3(mg/cm2) As Areal extent of the site or contamination 0.5(acres) ATcw Construction Worker Averaging Time: 365 x LT 25550(days) ATcw-a Construction Worker Averaging Time: EWcw x 7 x EDcw 350(days) B Construction Worker Soil Inhalation Dispersion Constant - Virginia DEQ 19.6154(unitless) BWcw Construction Worker Body Weight 80(kg)
C Construction Worker Soil Inhalation Dispersion Constant - Virginia DEQ 225.3397(unitless) DWcw Construction Worker Days Worked 5(days/week)
EDcw Construction Worker Exposure Duration 1(yrs)
EFcw Construction Worker Exposure Frequency 250(days/yrs) EFcw-vrp Construction Worker Soil Exposure Frequency - VRP ONLY - Virginia DEQ 125(days/yr) ETcw Construction Worker Exposure Time 8(hrs/day)
EWcw Construction Worker Weeks Worked 50(weeks/yr)
F(x) Function Dependent on 0.886 × (Ut/Um) 0.194(unitless) Fd Dispersion Correction Factor 0.185(unitless)
IRcw Construction Worker Soil Ingestion Rate 330(mg/day) n Total soil porosity: 1-(ρb/ρs) 0.433962264150943(unitless) PEFsc Particulate Emission Factor Subchronic - Virginia DEQ calculated 1266503136.97919(m3/kg) RfCsc Subchronic Inhalation Reference Concentration (mg/m3) RfDosc Subchronic Oral Reference Dose (mg/kg-day)
SAcw Construction Worker Surface Area 3527(cm2/day)
Total time over which construction occurs: 30240000
EDcw*EWcw*7days/wk*24hrs/day*3600s/hr
Tc (s)
Saturday, August 7, 2021 CHANGE Page 9 of 11
Voluntary Remediation Program
1 1.00E-06 1.00E-04
Risk Based Performance Criteria
Default Hazard Index Default Risk Individual Chemical Default Cumulative Risk-All Chemicals Site Name: Town Center Northwest Signal Hill CA
Program:
Construction
TR-ACH Trench Air Changes per Hour - Virginia DEQ 2(h)-1 TR-ACvad Trench Advection Coefficient Groundwater greater than 15ft - Virginia DEQ 0.25(cm3/cm3) TR-D-dir Trench Depth - groundwater less Than 15ft - Virginia DEQ 2.44(m) TR-D-ind Trench Depth - groundwater greater than 15ft - Virginia DEQ 4.57(m) TR-Dsg Trench - Depth to soil gas vapor source - Virginia DEQ 1(cm) TR-EFcw Trench Construction Worker Exposure Frequency - Virginia DEQ 125(days/yr) TR-ETcw Trench Construction Worker Exposure Time - Virginia DEQ 4(hrs/day) TR-EVcw Trench Construction Worker Events - Virginia DEQ 1(events/day) TR-F Trench Fraction of floor through which contaminant can enter - Virginia DEQ 1(unitless) TR-HV Trench Thickness of Vadose Zone - groundwater greater than 15 ft - Virginia DEQ 30(cm) TR-IRcw Trench Construction Worker Groundwater Ingestion Rate - Virginia DEQ 0.02(L/day) Trench Gas-phase mass transfer coefficient of water vapor at 25deg C - Virginia 0.833 DEQ
TR-KGH2O (cm/s)
TR-KLO2 Trench Liquid-phase mass transfer coefficient of oxygen at 25deg C - Virginia DEQ 0.002(cm/s) TR-L Trench Length - Virginia DEQ 2.44(m)
TR-Lgw Trench Depth to groundwater - Virginia DEQ 488(cm) TR-MWH2O Trench Molecular Weight of Water - Virginia DEQ 18(unitless) TR-MWO2 Trench Molecular Weight of Oxygen - Virginia DEQ 32(unitless) TR-Porvad Trench Porosity in Vadose Zone - groundwater greater than 15ft - Virginia DEQ 0.44(cm3/cm3) TR-R Trench Ideal Gas Constant - Virginia DEQ 0.000082(atm-m3/mol-K) TR-Temp-F Trench Temperature Fahrenheit - Virginia DEQ 77(F) TR-Temp-K Trench Temperature - Virginia DEQ 298(K)
TR-W Trench Width - Virginia DEQ 0.91(m)
TR-W/D Trench Width to Depth Ratio - Virginia DEQ 0.38(unitless) Um Mean Annual Wind Speed 4.69(m/s)
Ut Equivalent Threshold Value of Wind Speed at 7m 11.32(m/s) V V Fraction of Vegetative Cover 0.5(unitless)
Saturday, August 7, 2021 CHANGE Page 10 of 11
Voluntary Remediation Program
1 1.00E-06 1.00E-04
Risk Based Performance Criteria
Default Hazard Index Default Risk Individual Chemical Default Cumulative Risk-All Chemicals Site Name: Town Center Northwest Signal Hill CA
Program:
Construction
Θa Air filled soil porosity: n-Θw 0.133962264150943(unitless) Θw Water filled soil porosity 0.3(unitless)
ρb Dry soil bulk density 1.5(kg/L)
ρs Soil particle density 2.65(kg/L)
CHANGE
END OF REPORT
Saturday, August 7, 2021 CHANGE Page 11 of 11
APPENDIX J
LeadSpread Model
INPUT OUTPUT
MEDIUM LEVEL Percentile Estimate of Blood Pb (ug/dl) PRG-90 Lead in Soil/Dust (ug/g) 61.0 50th 90th 95th 98th 99th (ug/g) Respirable Dust (ug/m3) 1.5 BLOOD Pb, CHILD 0.4 0.8 0.9 1.1 1.3 77 BLOOD Pb, PICA CHILD 0.9 1.6 1.9 2.3 2.6 39
units
Days per week days/wk
Geometric Standard Deviation PEF ug/dl percent PEF ug/dl percent Blood lead level of concern (ug/dl) Soil Contact 5.8E-5 0.00 1% 0.00 0% Skin area, residential cm2
Soil Ingestion 7.0E-3 0.43 99% 1.4E-2 0.86 100%
Soil adherence ug/cm2Inhalation 2.0E-6 0.00 0% 0.00 0%
Dermal uptake constant (ug/dl)/(ug/day
Soil ingestion mg/day
Soil ingestion, pica mg/day
Ingestion constant (ug/dl)/(ug/day
Bioavailability unitless
Breathing rate m3
/day
Inhalation constant (ug/dl)/(ug/day
Click here for REFERENCES
Click here for ABBREVIATED INSTRUCTIONS FOR LEADSPREAD 8 2900
EXPOSURE PARAMETERS
CHILDREN typical with pica
7 200
CALIFORNIA DEPARTMENT OF TOXIC SUBSTANCES CONTROL
PATHWAYS
children
Pathway contribution Pathway contribution
1.6 1
Pathway
0.16 6.8
0.192
100
200
0.0001
0.44 EDIT RED CELL
Variable Units
PbS ug/g or ppm 61
Rfetal/maternal -- 0.9
BKSF ug/dL per ug/day 0.4
GSDi -- 1.8
PbB0 ug/dL 0.0
IRS g/day 0.050
AFS, D -- 0.12
EFS, D days/yr 250
ATS, D days/yr 365
PbBadult PbB of adult worker, geometric mean ug/dL 0.1
PbBfetal, 0.90 90th percentile PbB among fetuses of adult workers ug/dL 0.2 PbBt Target PbB level of concern (e.g., 10 ug/dL) ug/dL 1.0 P(PbBfetal > PbBt) Probability that fetal PbB > PbBt, assuming lognormal distributio % 0.0% PRG90 318
Click here for REFERENCES
Fetal/maternal PbB ratio
Biokinetic Slope Factor
Geometric standard deviation PbB
Baseline PbB
CALCULATIONS OF BLOOD LEAD CONCENTRATIONS (PbBs) AND PRELMIINARY REMEDIATION GOAL (PRG)
MODIFIED VERSION OF USEPA ADULT LEAD MODEL
Averaging time (same for soil and dust)
Soil ingestion rate (including soil-derived indoor dust) Absorption fraction (same for soil and dust)
Exposure frequency (same for soil and dust)
Description of Variable
Soil lead concentration
F11c
Review of Human Health Risk Assessment by OEHHA,
Town Center Northwest
CALIFORNIA ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF ENVIRONMENTAL HEALTH HAZARD ASSESSMENT
Gavin Newsom, Governor
Jared Blumenfeld, Secretary for Environmental Protection Lauren Zeise, Ph.D., Director
Science for a Healthy California | oehha.ca.gov
Headquarters: 1001 I St., Sacramento, California 95814 | Mailing address: P.O. Box 4010, Sacramento, California 95812-4010 | (916) 324-7572 Oakland office and mailing address: 1515 Clay St., Suite 1600, Oakland, California 94612 | (510) 622-3200
MEMORANDUM
TO: Elise McCaleb,
City of Signal Hill
2175 Cherry Avenue
Signal Hill, CA 90755
FROM: Jim Carlisle, DVM
Staff Toxicologist
Air and Site Assessment and Climate Indicators Branch
Office of Environmental Health Hazard Assessment
DATE: August 26, 2021
SUBJECT: HUMAN HEALTH RISK ASSESSMENT, TOWN CENTER NORTHWEST, SIGNAL HILL, CALIFORNIA OEHHA # 830168-00
Document Reviewed
Human Health Risk Assessment, Northeast Corner E. Willow St. and Walnut Avenue, Town Center Northwest, Signal Hill, California, prepared by: Mearns Consulting, LLC, dated August 11, 2021
Site Description and Background
The 8.35-acre site has been an oil field since 1928. There are 19 wells and associated infrastructure on-site.
Adjacent properties include oilfields, commercial/industrial businesses, and multifamily residences.
Chemicals of Potential Concern (COPCs)
COPCs included all detected volatile organic compounds (VOCs), petroleum hydrocarbons (TPH), and semi-volatile organic compounds (SVOCs).
All detected metals were deemed to be within local background levels. The maximum detected arsenic concentration (20 mg/kg) exceeded the DTSC (2020) upper tolerance limit (12 mg/kg), but this single elevated value (among 56 samples) may not pose a significant threat to the health of future site occupants.
Elise McCaleb
August 26, 2021