Agenda packet — West Sacramento City Council, June 26, 2024 (part 4 of 8)

CAM 17 Metals
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B1W (Composite 0-3) (21H0769-44) Soil Sampled: 08/11/21 13:50 Received: 08/11/21 17:35 Selenium ND 2.5 mg/kg 1 2106813 " 08/13/21 EPA 6010B
Silver 1.1 1.0 " " " " " "
Thallium ND 4.0 " " " " " "
Vanadium 30 1.0 " " " " " "
Zinc 30 1.0 " " " " " "
B2E (Composite 0-3) (21H0769-48) Soil Sampled: 08/11/21 14:50 Received: 08/11/21 17:35 Antimony ND 2.5 mg/kg 1 2106813 08/13/21 08/13/21 EPA 6010B Arsenic 3.7 1.0 " " " " " "
Barium 59 1.0 " " " " " "
Beryllium ND 1.0 " " " " " "
Cadmium ND 1.0 " " " " " "
Chromium 31 1.0 " " " " " "
Cobalt 9.0 1.0 " " " " " "
Copper 7.7 1.0 " " " " " "
Lead 17 2.5 " " " " " "
Mercury ND 0.10 " " 2106802 08/13/21 08/16/21 EPA 7471A Molybdenum ND 1.0 " " 2106813 08/13/21 08/13/21 EPA 6010B Nickel 31 1.0 " " " " " "
Selenium ND 2.5 " " " " " "
Silver 1.8 1.0 " " " " " "
Thallium ND 4.0 " " " " " "
Vanadium 32 1.0 " " " " " "
Zinc 37 1.0 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
533
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 10 of 83 ends

CAM 17 Metals
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B3N (Composite 0-3) (21H0769-52) Soil Sampled: 08/11/21 09:30 Received: 08/11/21 17:35 Antimony ND 2.5 mg/kg 1 2106813 08/13/21 08/13/21 EPA 6010B Arsenic 2.7 1.0 " " " " " "
Barium 120 1.0 " " " " " "
Beryllium ND 1.0 " " " " " "
Cadmium ND 1.0 " " " " " "
Chromium 65 1.0 " " " " " "
Cobalt 12 1.0 " " " " " "
Copper 18 1.0 " " " " " "
Lead 12 2.5 " " " " " "
Mercury ND 0.10 " " 2106802 08/13/21 08/16/21 EPA 7471A Molybdenum ND 1.0 " " 2106813 08/13/21 08/13/21 EPA 6010B Nickel 80 1.0 " " " " " "
Selenium ND 2.5 " " " " " "
Silver 2.7 1.0 " " " " " "
Thallium ND 4.0 " " " " " "
Vanadium 56 1.0 " " " " " "
Zinc 59 1.0 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
534
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 11 of 83 ends

Conventional Chemistry Parameters by APHA/EPA Methods
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B11W (0-1) (21H0769-01) Soil Sampled: 08/11/21 14:30 Received: 08/11/21 17:35 pH 7.48 0.01 pH Units 1 2106821 08/13/21 08/13/21 EPA 9045C B11W (1-2) (21H0769-02) Soil Sampled: 08/11/21 14:30 Received: 08/11/21 17:35 pH 7.85 0.01 pH Units 1 2106821 08/13/21 08/13/21 EPA 9045C B11W (2-3) (21H0769-03) Soil Sampled: 08/11/21 14:30 Received: 08/11/21 17:35 pH 7.89 0.01 pH Units 1 2106821 08/13/21 08/13/21 EPA 9045C B12E (0-1) (21H0769-05) Soil Sampled: 08/11/21 15:20 Received: 08/11/21 17:35 pH 7.83 0.01 pH Units 1 2106821 08/13/21 08/13/21 EPA 9045C B12E (1-2) (21H0769-06) Soil Sampled: 08/11/21 15:20 Received: 08/11/21 17:35 pH 5.32 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B12E (2-3) (21H0769-07) Soil Sampled: 08/11/21 15:20 Received: 08/11/21 17:35 pH 7.69 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B13W (0-1) (21H0769-09) Soil Sampled: 08/11/21 15:45 Received: 08/11/21 17:35 pH 7.40 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B13W (1-2) (21H0769-10) Soil Sampled: 08/11/21 15:45 Received: 08/11/21 17:35 pH 7.37 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B13W (2-3) (21H0769-11) Soil Sampled: 08/11/21 15:45 Received: 08/11/21 17:35 pH 7.61 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C 3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
535
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 12 of 83 ends

Conventional Chemistry Parameters by APHA/EPA Methods
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B10S (0-1) (21H0769-13) Soil Sampled: 08/11/21 07:40 Received: 08/11/21 17:35 pH 7.70 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B10S (1-2) (21H0769-14) Soil Sampled: 08/11/21 07:40 Received: 08/11/21 17:35 pH 7.67 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B10S (2-3) (21H0769-15) Soil Sampled: 08/11/21 07:40 Received: 08/11/21 17:35 pH 7.57 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B7W (0-1) (21H0769-17) Soil Sampled: 08/11/21 11:45 Received: 08/11/21 17:35 pH 7.71 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B7W (1-2) (21H0769-18) Soil Sampled: 08/11/21 11:45 Received: 08/11/21 17:35 pH 7.50 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B7W (2-3) (21H0769-19) Soil Sampled: 08/11/21 11:45 Received: 08/11/21 17:35 pH 6.20 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B8E (0-1) (21H0769-21) Soil Sampled: 08/11/21 11:25 Received: 08/11/21 17:35 pH 7.52 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B8E (1-2) (21H0769-22) Soil Sampled: 08/11/21 11:25 Received: 08/11/21 17:35 pH 6.82 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B8E (2-3) (21H0769-23) Soil Sampled: 08/11/21 11:25 Received: 08/11/21 17:35 pH 8.38 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C 3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
536
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 13 of 83 ends

Conventional Chemistry Parameters by APHA/EPA Methods
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B9N (0-1) (21H0769-25) Soil Sampled: 08/11/21 07:30 Received: 08/11/21 17:35 pH 7.06 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B9N (1-2) (21H0769-26) Soil Sampled: 08/11/21 07:30 Received: 08/11/21 17:35 pH 7.66 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B9N (2-3) (21H0769-27) Soil Sampled: 08/11/21 07:30 Received: 08/11/21 17:35 pH 7.49 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B4S (0-1) (21H0769-29) Soil Sampled: 08/11/21 09:50 Received: 08/11/21 17:35 pH 7.52 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B4S (1-2) (21H0769-30) Soil Sampled: 08/11/21 09:50 Received: 08/11/21 17:35 pH 7.63 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B4S (2-3) (21H0769-31) Soil Sampled: 08/11/21 09:50 Received: 08/11/21 17:35 pH 7.72 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B5N (0-1) (21H0769-33) Soil Sampled: 08/11/21 10:30 Received: 08/11/21 17:35 pH 7.51 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B5N (1-2) (21H0769-34) Soil Sampled: 08/11/21 10:30 Received: 08/11/21 17:35 pH 8.14 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B5N (2-3) (21H0769-35) Soil Sampled: 08/11/21 10:30 Received: 08/11/21 17:35 pH 7.72 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C 3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
537
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 14 of 83 ends

Conventional Chemistry Parameters by APHA/EPA Methods
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B6S (0-1) (21H0769-37) Soil Sampled: 08/11/21 11:00 Received: 08/11/21 17:35 pH 6.66 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B6S (1-2) (21H0769-38) Soil Sampled: 08/11/21 11:00 Received: 08/11/21 17:35 pH 7.60 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B6S (2-3) (21H0769-39) Soil Sampled: 08/11/21 11:00 Received: 08/11/21 17:35 pH 7.47 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B1W (0-1) (21H0769-41) Soil Sampled: 08/11/21 13:50 Received: 08/11/21 17:35 pH 5.92 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B1W (1-2) (21H0769-42) Soil Sampled: 08/11/21 13:50 Received: 08/11/21 17:35 pH 7.03 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B1W (2-3) (21H0769-43) Soil Sampled: 08/11/21 13:50 Received: 08/11/21 17:35 pH 7.06 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B2E (0-1) (21H0769-45) Soil Sampled: 08/11/21 14:50 Received: 08/11/21 17:35 pH 7.12 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B2E (1-2) (21H0769-46) Soil Sampled: 08/11/21 14:50 Received: 08/11/21 17:35 pH 5.54 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B2E (2-3) (21H0769-47) Soil Sampled: 08/11/21 14:50 Received: 08/11/21 17:35 pH 6.38 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C 3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
538
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 15 of 83 ends

Conventional Chemistry Parameters by APHA/EPA Methods
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B3N (0-1) (21H0769-49) Soil Sampled: 08/11/21 09:30 Received: 08/11/21 17:35 pH 8.19 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B3N (1-2) (21H0769-50) Soil Sampled: 08/11/21 09:30 Received: 08/11/21 17:35 pH 7.87 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C B3N (2-3) (21H0769-51) Soil Sampled: 08/11/21 09:30 Received: 08/11/21 17:35 pH 7.43 0.01 pH Units 1 2106828 08/13/21 08/13/21 EPA 9045C 3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
539
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 16 of 83 ends

Extractable Petroleum Hydrocarbons by EPA Method 8015M
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B11W (Composite 0-3) (21H0769-04) Soil Sampled: 08/11/21 14:30 Received: 08/11/21 17:35 Diesel ND 1.0 mg/kg 1 2106891 08/16/21 08/17/21 EPA 8015M Hydraulic Oil ND 1.0 " " " " " "
Kerosene ND 1.0 " " " " " "
Mineral Oil ND 1.0 " " " " " "
Motor Oil ND 1.0 " " " " " "
Surrogate: o-Terphenyl 66 % 65-135 " " " "
B12E (Composite 0-3) (21H0769-08) Soil Sampled: 08/11/21 15:20 Received: 08/11/21 17:35 Diesel ND 1.0 mg/kg 1 2106891 08/16/21 08/17/21 EPA 8015M Hydraulic Oil ND 1.0 " " " " " "
Kerosene ND 1.0 " " " " " "
Mineral Oil ND 1.0 " " " " " "
Motor Oil ND 1.0 " " " " " "
Surrogate: o-Terphenyl 71 % 65-135 " " " "
B10S (Composite 0-3) (21H0769-16) Soil Sampled: 08/11/21 07:40 Received: 08/11/21 17:35 Diesel ND 1.0 mg/kg 1 2106891 08/16/21 08/17/21 EPA 8015M Hydraulic Oil ND 1.0 " " " " " "
Kerosene ND 1.0 " " " " " "
Mineral Oil ND 1.0 " " " " " "
Motor Oil ND 1.0 " " " " " "
Surrogate: o-Terphenyl 72 % 65-135 " " " "
B7W (Composite 0-3) (21H0769-20) Soil Sampled: 08/11/21 11:45 Received: 08/11/21 17:35 Diesel ND 1.0 mg/kg 1 2106891 08/16/21 08/17/21 EPA 8015M Hydraulic Oil ND 1.0 " " " " " "
Kerosene ND 1.0 " " " " " "
Mineral Oil ND 1.0 " " " " " "
Motor Oil ND 1.0 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
540
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 17 of 83 ends

Extractable Petroleum Hydrocarbons by EPA Method 8015M
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B7W (Composite 0-3) (21H0769-20) Soil Sampled: 08/11/21 11:45 Received: 08/11/21 17:35 Surrogate: o-Terphenyl 68 % 65-135 2106891 " 08/17/21 EPA 8015M B8E (Composite 0-3) (21H0769-24) Soil Sampled: 08/11/21 11:25 Received: 08/11/21 17:35 Diesel ND 1.0 mg/kg 1 2106891 08/16/21 08/17/21 EPA 8015M Hydraulic Oil ND 1.0 " " " " " "
Kerosene ND 1.0 " " " " " "
Mineral Oil ND 1.0 " " " " " "
Motor Oil 63 1.0 " " " " " "
Surrogate: o-Terphenyl 81 % 65-135 " " " "
B9N (Composite 0-3) (21H0769-28) Soil Sampled: 08/11/21 07:30 Received: 08/11/21 17:35 Diesel ND 1.0 mg/kg 1 2106891 08/16/21 08/17/21 EPA 8015M Hydraulic Oil ND 1.0 " " " " " "
Kerosene ND 1.0 " " " " " "
Mineral Oil ND 1.0 " " " " " "
Motor Oil ND 1.0 " " " " " "
Surrogate: o-Terphenyl 71 % 65-135 " " " "
B4S (Composite 0-3) (21H0769-32) Soil Sampled: 08/11/21 09:50 Received: 08/11/21 17:35 Diesel ND 1.0 mg/kg 1 2106891 08/16/21 08/17/21 EPA 8015M Hydraulic Oil ND 1.0 " " " " " "
Kerosene ND 1.0 " " " " " "
Mineral Oil ND 1.0 " " " " " "
Motor Oil ND 1.0 " " " " " "
Surrogate: o-Terphenyl 70 % 65-135 " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
541
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 18 of 83 ends

Extractable Petroleum Hydrocarbons by EPA Method 8015M
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B6S (Composite 0-3) (21H0769-40) Soil Sampled: 08/11/21 11:00 Received: 08/11/21 17:35 Diesel ND 1.0 mg/kg 1 2106891 08/16/21 08/17/21 EPA 8015M Hydraulic Oil ND 5.0 " 5 " " " "
Kerosene ND 5.0 " " " " " "
Mineral Oil ND 5.0 " " " " " "
Motor Oil 420 5.0 " " " " " "
Surrogate: o-Terphenyl 96 % 65-135 " " " "
B2E (Composite 0-3) (21H0769-48) Soil Sampled: 08/11/21 14:50 Received: 08/11/21 17:35 Diesel ND 1.0 mg/kg 1 2106891 08/16/21 08/17/21 EPA 8015M Hydraulic Oil ND 1.0 " " " " " "
Kerosene ND 1.0 " " " " " "
Mineral Oil ND 1.0 " " " " " "
Motor Oil ND 1.0 " " " " " "
Surrogate: o-Terphenyl 66 % 65-135 " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
542
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 19 of 83 ends

Metals by EPA 6000/7000 Series Methods
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B11W (0-1) (21H0769-01) Soil Sampled: 08/11/21 14:30 Received: 08/11/21 17:35 Lead 21 2.5 mg/kg 1 2106787 08/13/21 08/13/21 EPA 6010B B11W (1-2) (21H0769-02) Soil Sampled: 08/11/21 14:30 Received: 08/11/21 17:35 Lead 23 2.5 mg/kg 1 2106787 08/13/21 08/13/21 EPA 6010B B11W (2-3) (21H0769-03) Soil Sampled: 08/11/21 14:30 Received: 08/11/21 17:35 Lead 4.9 2.5 mg/kg 1 2106787 08/13/21 08/13/21 EPA 6010B B12E (0-1) (21H0769-05) Soil Sampled: 08/11/21 15:20 Received: 08/11/21 17:35 Lead 9.0 2.5 mg/kg 1 2106787 08/13/21 08/13/21 EPA 6010B B12E (1-2) (21H0769-06) Soil Sampled: 08/11/21 15:20 Received: 08/11/21 17:35 Lead 9.0 2.5 mg/kg 1 2106787 08/13/21 08/13/21 EPA 6010B B12E (2-3) (21H0769-07) Soil Sampled: 08/11/21 15:20 Received: 08/11/21 17:35 Lead 7.3 2.5 mg/kg 1 2106787 08/13/21 08/13/21 EPA 6010B B13W (0-1) (21H0769-09) Soil Sampled: 08/11/21 15:45 Received: 08/11/21 17:35 Lead 7.1 2.5 mg/kg 1 2106787 08/13/21 08/13/21 EPA 6010B B13W (1-2) (21H0769-10) Soil Sampled: 08/11/21 15:45 Received: 08/11/21 17:35 Lead 6.9 2.5 mg/kg 1 2106787 08/13/21 08/13/21 EPA 6010B B13W (2-3) (21H0769-11) Soil Sampled: 08/11/21 15:45 Received: 08/11/21 17:35 Lead 5.0 1.3 mg/kg 1 2106816 08/13/21 08/13/21 EPA 6010B 3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
543
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 20 of 83 ends

Metals by EPA 6000/7000 Series Methods
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B10S (0-1) (21H0769-13) Soil Sampled: 08/11/21 07:40 Received: 08/11/21 17:35 Lead 15 1.3 mg/kg 1 2106816 08/13/21 08/14/21 EPA 6010B B10S (1-2) (21H0769-14) Soil Sampled: 08/11/21 07:40 Received: 08/11/21 17:35 Lead 5.7 1.3 mg/kg 1 2106816 08/13/21 08/14/21 EPA 6010B B10S (2-3) (21H0769-15) Soil Sampled: 08/11/21 07:40 Received: 08/11/21 17:35 Lead 4.6 1.3 mg/kg 1 2106816 08/13/21 08/14/21 EPA 6010B B7W (0-1) (21H0769-17) Soil Sampled: 08/11/21 11:45 Received: 08/11/21 17:35 Lead 11 1.3 mg/kg 1 2106816 08/13/21 08/14/21 EPA 6010B B7W (1-2) (21H0769-18) Soil Sampled: 08/11/21 11:45 Received: 08/11/21 17:35 Lead 18 1.3 mg/kg 1 2106816 08/13/21 08/14/21 EPA 6010B B7W (2-3) (21H0769-19) Soil Sampled: 08/11/21 11:45 Received: 08/11/21 17:35 Lead 17 1.3 mg/kg 1 2106816 08/13/21 08/14/21 EPA 6010B B8E (0-1) (21H0769-21) Soil Sampled: 08/11/21 11:25 Received: 08/11/21 17:35 Lead 5.8 1.3 mg/kg 1 2106816 08/13/21 08/14/21 EPA 6010B B8E (1-2) (21H0769-22) Soil Sampled: 08/11/21 11:25 Received: 08/11/21 17:35 Lead 41 1.3 mg/kg 1 2106816 08/13/21 08/14/21 EPA 6010B B8E (2-3) (21H0769-23) Soil Sampled: 08/11/21 11:25 Received: 08/11/21 17:35 Lead 12 1.3 mg/kg 1 2106816 08/13/21 08/14/21 EPA 6010B 3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
544
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 21 of 83 ends

Metals by EPA 6000/7000 Series Methods
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B9N (0-1) (21H0769-25) Soil Sampled: 08/11/21 07:30 Received: 08/11/21 17:35 Lead 3.8 1.3 mg/kg 1 2106816 08/13/21 08/14/21 EPA 6010B B9N (1-2) (21H0769-26) Soil Sampled: 08/11/21 07:30 Received: 08/11/21 17:35 Lead 3.0 1.3 mg/kg 1 2106816 08/13/21 08/14/21 EPA 6010B B9N (2-3) (21H0769-27) Soil Sampled: 08/11/21 07:30 Received: 08/11/21 17:35 Lead 2.7 1.3 mg/kg 1 2106816 08/13/21 08/14/21 EPA 6010B B4S (0-1) (21H0769-29) Soil Sampled: 08/11/21 09:50 Received: 08/11/21 17:35 Lead 25 1.3 mg/kg 1 2106816 08/13/21 08/14/21 EPA 6010B B4S (1-2) (21H0769-30) Soil Sampled: 08/11/21 09:50 Received: 08/11/21 17:35 Lead 12 1.3 mg/kg 1 2106816 08/13/21 08/14/21 EPA 6010B B4S (2-3) (21H0769-31) Soil Sampled: 08/11/21 09:50 Received: 08/11/21 17:35 Lead 4.8 1.3 mg/kg 1 2106816 08/13/21 08/14/21 EPA 6010B B5N (0-1) (21H0769-33) Soil Sampled: 08/11/21 10:30 Received: 08/11/21 17:35 Lead 41 1.3 mg/kg 1 2106816 08/13/21 08/14/21 EPA 6010B B5N (1-2) (21H0769-34) Soil Sampled: 08/11/21 10:30 Received: 08/11/21 17:35 Lead 27 1.3 mg/kg 1 2106816 08/13/21 08/14/21 EPA 6010B B5N (2-3) (21H0769-35) Soil Sampled: 08/11/21 10:30 Received: 08/11/21 17:35 Lead 17 1.3 mg/kg 1 2106816 08/13/21 08/14/21 EPA 6010B 3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
545
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 22 of 83 ends

Metals by EPA 6000/7000 Series Methods
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B6S (0-1) (21H0769-37) Soil Sampled: 08/11/21 11:00 Received: 08/11/21 17:35 Lead 41 1.3 mg/kg 1 2106816 08/13/21 08/14/21 EPA 6010B B6S (1-2) (21H0769-38) Soil Sampled: 08/11/21 11:00 Received: 08/11/21 17:35 Lead 130 2.5 mg/kg 1 2106844 08/16/21 08/16/21 EPA 6010B B6S (2-3) (21H0769-39) Soil Sampled: 08/11/21 11:00 Received: 08/11/21 17:35 Lead 150 2.5 mg/kg 1 2106844 08/16/21 08/16/21 EPA 6010B B1W (0-1) (21H0769-41) Soil Sampled: 08/11/21 13:50 Received: 08/11/21 17:35 Lead 13 2.5 mg/kg 1 2106844 08/16/21 08/16/21 EPA 6010B B1W (1-2) (21H0769-42) Soil Sampled: 08/11/21 13:50 Received: 08/11/21 17:35 Lead 2.8 2.5 mg/kg 1 2106844 08/16/21 08/16/21 EPA 6010B B1W (2-3) (21H0769-43) Soil Sampled: 08/11/21 13:50 Received: 08/11/21 17:35 Lead ND 2.5 mg/kg 1 2106844 08/16/21 08/16/21 EPA 6010B B2E (0-1) (21H0769-45) Soil Sampled: 08/11/21 14:50 Received: 08/11/21 17:35 Lead 2.5 2.5 mg/kg 1 2106844 08/16/21 08/16/21 EPA 6010B B2E (1-2) (21H0769-46) Soil Sampled: 08/11/21 14:50 Received: 08/11/21 17:35 Lead 21 2.5 mg/kg 1 2106844 08/16/21 08/16/21 EPA 6010B B2E (2-3) (21H0769-47) Soil Sampled: 08/11/21 14:50 Received: 08/11/21 17:35 Lead 4.2 2.5 mg/kg 1 2106844 08/16/21 08/16/21 EPA 6010B 3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
546
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 23 of 83 ends

Metals by EPA 6000/7000 Series Methods
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B3N (0-1) (21H0769-49) Soil Sampled: 08/11/21 09:30 Received: 08/11/21 17:35 Lead 4.8 2.5 mg/kg 1 2106844 08/16/21 08/16/21 EPA 6010B B3N (1-2) (21H0769-50) Soil Sampled: 08/11/21 09:30 Received: 08/11/21 17:35 Lead 4.5 2.5 mg/kg 1 2106844 08/16/21 08/16/21 EPA 6010B B3N (2-3) (21H0769-51) Soil Sampled: 08/11/21 09:30 Received: 08/11/21 17:35 Lead 12 2.5 mg/kg 1 2106844 08/16/21 08/16/21 EPA 6010B 3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
547
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 24 of 83 ends

Organochlorine Pesticides by EPA Method 8081A
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B11W (Composite 0-3) (21H0769-04) Soil Sampled: 08/11/21 14:30 Received: 08/11/21 17:35 QRL-8 4,4¥-DDD ND 17 µg/kg 5 2106776 08/12/21 08/13/21 EPA 8081A 4,4¥-DDE ND 17 " " " " " "
4,4¥-DDT ND 17 " " " " " "
Aldrin ND 5.0 " " " " " "
alpha-BHC ND 8.5 " " " " " "
beta-BHC ND 8.5 " " " " " "
Chlordane-technical 55 17 " " " " " "
delta-BHC ND 8.5 " " " " " "
Dieldrin ND 5.0 " " " " " "
Endosulfan I ND 8.5 " " " " " "
Endosulfan II ND 17 " " " " " "
Endosulfan sulfate ND 17 " " " " " "
Endrin ND 17 " " " " " "
Endrin aldehyde ND 17 " " " " " "
gamma-BHC (Lindane) ND 8.5 " " " " " "
Heptachlor ND 8.5 " " " " " "
Heptachlor epoxide ND 8.5 " " " " " "
Methoxychlor ND 85 " " " " " "
Mirex ND 17 " " " " " "
Toxaphene ND 100 " " " " " "
Surrogate: Decachlorobiphenyl 56 % 52-141 " " " "
Surrogate: Tetrachloro-meta-xylene 41 % 46-139 " " " " QS-4 B12E (Composite 0-3) (21H0769-08) Soil Sampled: 08/11/21 15:20 Received: 08/11/21 17:35 4,4¥-DDD ND 3.3 µg/kg 1 2106776 08/12/21 08/13/21 EPA 8081A 4,4¥-DDE 3.5 3.3 " " " " " "
4,4¥-DDT 3.4 3.3 " " " " " "
Aldrin ND 5.0 " 5 " " " "
alpha-BHC ND 8.5 " " " " " "
beta-BHC ND 8.5 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
548
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 25 of 83 ends

Organochlorine Pesticides by EPA Method 8081A
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B12E (Composite 0-3) (21H0769-08) Soil Sampled: 08/11/21 15:20 Received: 08/11/21 17:35 Chlordane-technical ND 3.3 µg/kg 1 2106776 " 08/13/21 EPA 8081A delta-BHC ND 1.7 " " " " " "
Dieldrin 5.5 1.0 " " " " " "
Endosulfan I ND 1.7 " " " " " "
Endosulfan II ND 3.3 " " " " " "
Endosulfan sulfate ND 3.3 " " " " " "
Endrin ND 3.3 " " " " " "
Endrin aldehyde ND 3.3 " " " " " "
gamma-BHC (Lindane) ND 1.7 " " " " " "
Heptachlor ND 1.7 " " " " " "
Heptachlor epoxide ND 1.7 " " " " " "
Methoxychlor ND 17 " " " " " "
Mirex ND 3.3 " " " " " "
Toxaphene ND 20 " " " " " "
Surrogate: Decachlorobiphenyl 82 % 52-141 " " " "
Surrogate: Tetrachloro-meta-xylene 41 % 46-139 " " " " QS-4 B13W (Composite 0-3) (21H0769-12) Soil Sampled: 08/11/21 15:45 Received: 08/11/21 17:35 4,4¥-DDD ND 3.3 µg/kg 1 2106776 08/12/21 08/13/21 EPA 8081A 4,4¥-DDE 13 3.3 " " " " " "
4,4¥-DDT 6.0 3.3 " " " " " "
Aldrin ND 1.0 " " " " " "
alpha-BHC ND 1.7 " " " " " "
beta-BHC ND 1.7 " " " " " "
Chlordane-technical ND 3.3 " " " " " "
delta-BHC ND 1.7 " " " " " "
Dieldrin 11 1.0 " " " " " "
Endosulfan I ND 1.7 " " " " " "
Endosulfan II ND 3.3 " " " " " "
Endosulfan sulfate ND 3.3 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
549
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 26 of 83 ends

Organochlorine Pesticides by EPA Method 8081A
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B13W (Composite 0-3) (21H0769-12) Soil Sampled: 08/11/21 15:45 Received: 08/11/21 17:35 Endrin ND 3.3 µg/kg 1 2106776 " 08/13/21 EPA 8081A
Endrin aldehyde ND 3.3 " " " " " "
gamma-BHC (Lindane) ND 1.7 " " " " " "
Heptachlor ND 1.7 " " " " " "
Heptachlor epoxide ND 1.7 " " " " " "
Methoxychlor ND 17 " " " " " "
Mirex ND 3.3 " " " " " "
Toxaphene ND 20 " " " " " "
Surrogate: Decachlorobiphenyl 82 % 52-141 " " " "
Surrogate: Tetrachloro-meta-xylene 43 % 46-139 " " " " QS-4 3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
550
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 27 of 83 ends

Organophosphorus Pesticides by EPA Method 8141A
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B11W (Composite 0-3) (21H0769-04) Soil Sampled: 08/11/21 14:30 Received: 08/11/21 17:35 QRL-8 Bolstar ND 10 µg/kg 5 2107013 08/19/21 08/20/21 EPA 8141A Chlorpyrifos ND 10 " " " " " "
Coumaphos ND 25 " " " " " "
Demeton ND 25 " " " " " "
Diazinon ND 10 " " " " " "
Dichlorvos ND 25 " " " " " "
Disulfoton ND 10 " " " " " "
Ethoprop ND 10 " " " " " "
Fensulfothion ND 10 " " " " " "
Fenthion ND 10 " " " " " "
Guthion ND 25 " " " " " "
Malathion ND 10 " " " " " "
Merphos ND 10 " " " " " "
Methyl parathion ND 10 " " " " " "
Mevinphos ND 10 " " " " " "
Phorate ND 10 " " " " " "
Prothiofos ND 10 " " " " " "
Ronnel ND 10 " " " " " "
Stirophos ND 10 " " " " " "
Trichloronate ND 10 " " " " " "
Surrogate: EPN 78 % 50-150 " " " "
B12E (Composite 0-3) (21H0769-08) Soil Sampled: 08/11/21 15:20 Received: 08/11/21 17:35 QRL-8 Bolstar ND 10 µg/kg 5 2107013 08/19/21 08/20/21 EPA 8141A Chlorpyrifos ND 10 " " " " " "
Coumaphos ND 25 " " " " " "
Demeton ND 25 " " " " " "
Diazinon ND 10 " " " " " "
Dichlorvos ND 25 " " " " " "
Disulfoton ND 10 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
551
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 28 of 83 ends

Organophosphorus Pesticides by EPA Method 8141A
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B12E (Composite 0-3) (21H0769-08) Soil Sampled: 08/11/21 15:20 Received: 08/11/21 17:35 QRL-8 Ethoprop ND 10 µg/kg 5 2107013 " 08/20/21 EPA 8141A
Fensulfothion ND 10 " " " " " "
Fenthion ND 10 " " " " " "
Guthion ND 25 " " " " " "
Malathion ND 10 " " " " " "
Merphos ND 10 " " " " " "
Methyl parathion ND 10 " " " " " "
Mevinphos ND 10 " " " " " "
Phorate ND 10 " " " " " "
Prothiofos ND 10 " " " " " "
Ronnel ND 10 " " " " " "
Stirophos ND 10 " " " " " "
Trichloronate ND 10 " " " " " "
Surrogate: EPN 69 % 50-150 " " " "
B13W (Composite 0-3) (21H0769-12) Soil Sampled: 08/11/21 15:45 Received: 08/11/21 17:35 QRL-8 Bolstar ND 10 µg/kg 5 2107013 08/19/21 08/20/21 EPA 8141A Chlorpyrifos ND 10 " " " " " "
Coumaphos ND 25 " " " " " "
Demeton ND 25 " " " " " "
Diazinon ND 10 " " " " " "
Dichlorvos ND 25 " " " " " "
Disulfoton ND 10 " " " " " "
Ethoprop ND 10 " " " " " "
Fensulfothion ND 10 " " " " " "
Fenthion ND 10 " " " " " "
Guthion ND 25 " " " " " "
Malathion ND 10 " " " " " "
Merphos ND 10 " " " " " "
Methyl parathion ND 10 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
552
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 29 of 83 ends

Organophosphorus Pesticides by EPA Method 8141A
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B13W (Composite 0-3) (21H0769-12) Soil Sampled: 08/11/21 15:45 Received: 08/11/21 17:35 QRL-8 Mevinphos ND 10 µg/kg 5 2107013 " 08/20/21 EPA 8141A
Phorate ND 10 " " " " " "
Prothiofos ND 10 " " " " " "
Ronnel ND 10 " " " " " "
Stirophos ND 10 " " " " " "
Trichloronate ND 10 " " " " " "
Surrogate: EPN 68 % 50-150 " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
553
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 30 of 83 ends

Polychlorinated Biphenyls by EPA Method 8082
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B5N (Composite 0-3) (21H0769-36) Soil Sampled: 08/11/21 10:30 Received: 08/11/21 17:35 QRL-8 Aroclor 1016 ND 100 µg/kg 5 2106790 08/12/21 08/13/21 EPA 8082 Aroclor 1221 ND 100 " " " " " "
Aroclor 1232 ND 100 " " " " " "
Aroclor 1242 ND 100 " " " " " "
Aroclor 1248 ND 100 " " " " " "
Aroclor 1254 ND 100 " " " " " "
Aroclor 1260 ND 100 " " " " " "
Aroclor 1268 ND 100 " " " " " "
Surrogate: Decachlorobiphenyl 94 % 50-150 " " " "
B1W (Composite 0-3) (21H0769-44) Soil Sampled: 08/11/21 13:50 Received: 08/11/21 17:35 QRL-8 Aroclor 1016 ND 100 µg/kg 5 2106790 08/12/21 08/13/21 EPA 8082 Aroclor 1221 ND 100 " " " " " "
Aroclor 1232 ND 100 " " " " " "
Aroclor 1242 ND 100 " " " " " "
Aroclor 1248 ND 100 " " " " " "
Aroclor 1254 ND 100 " " " " " "
Aroclor 1260 ND 100 " " " " " "
Aroclor 1268 ND 100 " " " " " "
Surrogate: Decachlorobiphenyl 76 % 50-150 " " " "
B3N (Composite 0-3) (21H0769-52) Soil Sampled: 08/11/21 09:30 Received: 08/11/21 17:35 Aroclor 1016 ND 20 µg/kg 1 2106790 08/12/21 08/13/21 EPA 8082 Aroclor 1221 ND 20 " " " " " "
Aroclor 1232 ND 20 " " " " " "
Aroclor 1242 ND 20 " " " " " "
Aroclor 1248 ND 20 " " " " " "
Aroclor 1254 ND 20 " " " " " "
Aroclor 1260 ND 20 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
554
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 31 of 83 ends

Polychlorinated Biphenyls by EPA Method 8082
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B3N (Composite 0-3) (21H0769-52) Soil Sampled: 08/11/21 09:30 Received: 08/11/21 17:35 Aroclor 1268 ND 20 µg/kg 1 2106790 " 08/13/21 EPA 8082
Surrogate: Decachlorobiphenyl 68 % 50-150 " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
555
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 32 of 83 ends

Polynuclear Aromatic Compounds by EPA Method 8310
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B5N (Composite 0-3) (21H0769-36) Soil Sampled: 08/11/21 10:30 Received: 08/11/21 17:35 Acenaphthene ND 17 µg/kg 1 2106847 08/16/21 08/17/21 EPA 8310 Acenaphthylene ND 17 " " " " " "
Anthracene ND 17 " " " " " "
Benzo (a) anthracene ND 17 " " " " " "
Benzo (a) pyrene ND 17 " " " " " "
Benzo (b) fluoranthene ND 17 " " " " " "
Benzo (g,h,i) perylene ND 17 " " " " " "
Benzo (k) fluoranthene ND 17 " " " " " "
Chrysene ND 17 " " " " " "
Dibenz (a,h) anthracene ND 17 " " " " " "
Fluoranthene ND 17 " " " " " "
Fluorene ND 17 " " " " " "
Indeno (1,2,3-cd) pyrene ND 17 " " " " " "
Naphthalene ND 17 " " " " " "
Phenanthrene ND 17 " " " " " "
Pyrene ND 17 " " " " " "
Surrogate: Terphenyl-dl4 78 % 70-130 " " " "
B1W (Composite 0-3) (21H0769-44) Soil Sampled: 08/11/21 13:50 Received: 08/11/21 17:35 Acenaphthene ND 17 µg/kg 1 2106847 08/16/21 08/17/21 EPA 8310 Acenaphthylene ND 17 " " " " " "
Anthracene ND 17 " " " " " "
Benzo (a) anthracene ND 17 " " " " " "
Benzo (a) pyrene ND 17 " " " " " "
Benzo (b) fluoranthene ND 17 " " " " " "
Benzo (g,h,i) perylene ND 17 " " " " " "
Benzo (k) fluoranthene ND 17 " " " " " "
Chrysene ND 17 " " " " " "
Dibenz (a,h) anthracene ND 17 " " " " " "
Fluoranthene ND 17 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
556
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 33 of 83 ends

Polynuclear Aromatic Compounds by EPA Method 8310
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B1W (Composite 0-3) (21H0769-44) Soil Sampled: 08/11/21 13:50 Received: 08/11/21 17:35 Fluorene ND 17 µg/kg 1 2106847 " 08/17/21 EPA 8310
Indeno (1,2,3-cd) pyrene ND 17 " " " " " "
Naphthalene ND 17 " " " " " "
Phenanthrene ND 17 " " " " " "
Pyrene ND 17 " " " " " "
Surrogate: Terphenyl-dl4 70 % 70-130 " " " "
B3N (Composite 0-3) (21H0769-52) Soil Sampled: 08/11/21 09:30 Received: 08/11/21 17:35 Acenaphthene ND 17 µg/kg 1 2106847 08/16/21 08/17/21 EPA 8310 Acenaphthylene ND 17 " " " " " "
Anthracene ND 17 " " " " " "
Benzo (a) anthracene ND 17 " " " " " "
Benzo (a) pyrene ND 17 " " " " " "
Benzo (b) fluoranthene ND 17 " " " " " "
Benzo (g,h,i) perylene ND 17 " " " " " "
Benzo (k) fluoranthene ND 17 " " " " " "
Chrysene ND 17 " " " " " "
Dibenz (a,h) anthracene ND 17 " " " " " "
Fluoranthene ND 17 " " " " " "
Fluorene ND 17 " " " " " "
Indeno (1,2,3-cd) pyrene ND 17 " " " " " "
Naphthalene ND 17 " " " " " "
Phenanthrene ND 17 " " " " " "
Pyrene ND 17 " " " " " "
Surrogate: Terphenyl-dl4 71 % 70-130 " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
557
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 34 of 83 ends

TPH-Gasoline by GC/MS
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B11W (Composite 0-3) (21H0769-04) Soil Sampled: 08/11/21 14:30 Received: 08/11/21 17:35 Gasoline ND 0.20 mg/kg 1 2106830 08/13/21 08/17/21 EPA 8260M Surrogate: Toluene-d8 102 % 65-135 " " " "
B12E (Composite 0-3) (21H0769-08) Soil Sampled: 08/11/21 15:20 Received: 08/11/21 17:35 Gasoline ND 0.20 mg/kg 1 2106830 08/13/21 08/17/21 EPA 8260M Surrogate: Toluene-d8 104 % 65-135 " " " "
B10S (Composite 0-3) (21H0769-16) Soil Sampled: 08/11/21 07:40 Received: 08/11/21 17:35 Gasoline ND 0.20 mg/kg 1 2106830 08/13/21 08/17/21 EPA 8260M Surrogate: Toluene-d8 99 % 65-135 " " " "
B7W (Composite 0-3) (21H0769-20) Soil Sampled: 08/11/21 11:45 Received: 08/11/21 17:35 Gasoline ND 0.20 mg/kg 1 2106830 08/13/21 08/17/21 EPA 8260M Surrogate: Toluene-d8 100 % 65-135 " " " "
B8E (Composite 0-3) (21H0769-24) Soil Sampled: 08/11/21 11:25 Received: 08/11/21 17:35 Gasoline ND 0.20 mg/kg 1 2106830 08/13/21 08/17/21 EPA 8260M Surrogate: Toluene-d8 112 % 65-135 " " " "
B9N (Composite 0-3) (21H0769-28) Soil Sampled: 08/11/21 07:30 Received: 08/11/21 17:35 Gasoline ND 0.20 mg/kg 1 2106830 08/13/21 08/17/21 EPA 8260M Surrogate: Toluene-d8 104 % 65-135 " " " "
B4S (Composite 0-3) (21H0769-32) Soil Sampled: 08/11/21 09:50 Received: 08/11/21 17:35 Gasoline ND 0.20 mg/kg 1 2106830 08/13/21 08/17/21 EPA 8260M 3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
558
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 35 of 83 ends

TPH-Gasoline by GC/MS
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B4S (Composite 0-3) (21H0769-32) Soil Sampled: 08/11/21 09:50 Received: 08/11/21 17:35 Surrogate: Toluene-d8 108 % 65-135 2106830 " 08/17/21 EPA 8260M B6S (Composite 0-3) (21H0769-40) Soil Sampled: 08/11/21 11:00 Received: 08/11/21 17:35 Gasoline ND 0.20 mg/kg 1 2106830 08/13/21 08/17/21 EPA 8260M Surrogate: Toluene-d8 102 % 65-135 " " " "
B2E (Composite 0-3) (21H0769-48) Soil Sampled: 08/11/21 14:50 Received: 08/11/21 17:35 Gasoline ND 0.20 mg/kg 1 2106830 08/13/21 08/17/21 EPA 8260M Surrogate: Toluene-d8 99 % 65-135 " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
559
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 36 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B11W (Composite 0-3) (21H0769-04) Soil Sampled: 08/11/21 14:30 Received: 08/11/21 17:35 1,1,1,2-Tetrachloroethane ND 5.0 µg/kg 1 2106830 08/13/21 08/17/21 EPA 8260B 1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2-Trichloro-1,2,2-trifluoroethane " " " " "
(Freon 113)
ND 5.0 "
1,1,2-Trichloroethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 10 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
2-Butanone ND 100 " " " " " "
2-Hexanone ND 50 " " " " " "
4-Methyl-2-pentanone ND 50 " " " " " "
Acetone 250 100 " " " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
560
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 37 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B11W (Composite 0-3) (21H0769-04) Soil Sampled: 08/11/21 14:30 Received: 08/11/21 17:35 Bromoform ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B
Bromomethane ND 10 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 10 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
Dichlorodifluoromethane (Freon 12) ND 10 " " " " " "
Di-isopropyl ether ND 5.0 " " " " " "
Ethyl tert-butyl ether ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Methylene chloride ND 20 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
o-Chlorotoluene ND 5.0 " " " " " "
p-Chlorotoluene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
tert-Amyl methyl ether ND 5.0 " " " " " "
tert-Butyl alcohol ND 50 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
561
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 38 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B11W (Composite 0-3) (21H0769-04) Soil Sampled: 08/11/21 14:30 Received: 08/11/21 17:35 Toluene ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B
trans-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
Vinyl chloride ND 10 " " " " " "
Xylenes (total) ND 10 " " " " " "
Surrogate: 1,2-Dichloroethane-d4 108 % 50-125 " " " "
Surrogate: 4-Bromofluorobenzene 100 % 50-128 " " " "
Surrogate: Toluene-d8 94 % 62-125 " " " "
B12E (Composite 0-3) (21H0769-08) Soil Sampled: 08/11/21 15:20 Received: 08/11/21 17:35 1,1,1,2-Tetrachloroethane ND 5.0 µg/kg 1 2106830 08/13/21 08/17/21 EPA 8260B 1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2-Trichloro-1,2,2-trifluoroethane " " " " "
(Freon 113)
ND 5.0 "
1,1,2-Trichloroethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 10 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
562
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 39 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B12E (Composite 0-3) (21H0769-08) Soil Sampled: 08/11/21 15:20 Received: 08/11/21 17:35 1,3-Dichlorobenzene ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B 1,3-Dichloropropane ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
2-Butanone ND 100 " " " " " "
2-Hexanone ND 50 " " " " " "
4-Methyl-2-pentanone ND 50 " " " " " "
Acetone ND 100 " " " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 10 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 10 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
Dichlorodifluoromethane (Freon 12) ND 10 " " " " " "
Di-isopropyl ether ND 5.0 " " " " " "
Ethyl tert-butyl ether ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Methylene chloride ND 20 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
563
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 40 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B12E (Composite 0-3) (21H0769-08) Soil Sampled: 08/11/21 15:20 Received: 08/11/21 17:35 Naphthalene ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B n-Butylbenzene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
o-Chlorotoluene ND 5.0 " " " " " "
p-Chlorotoluene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
tert-Amyl methyl ether ND 5.0 " " " " " "
tert-Butyl alcohol ND 50 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
Vinyl chloride ND 10 " " " " " "
Xylenes (total) ND 10 " " " " " "
Surrogate: 1,2-Dichloroethane-d4 111 % 50-125 " " " "
Surrogate: 4-Bromofluorobenzene 93 % 50-128 " " " "
Surrogate: Toluene-d8 99 % 62-125 " " " "
B10S (Composite 0-3) (21H0769-16) Soil Sampled: 08/11/21 07:40 Received: 08/11/21 17:35 1,1,1,2-Tetrachloroethane ND 5.0 µg/kg 1 2106830 08/13/21 08/17/21 EPA 8260B 1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2-Trichloro-1,2,2-trifluoroethane " " " " "
(Freon 113)
ND 5.0 "
1,1,2-Trichloroethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
564
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 41 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B10S (Composite 0-3) (21H0769-16) Soil Sampled: 08/11/21 07:40 Received: 08/11/21 17:35 1,1-Dichloroethene ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B 1,1-Dichloropropene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 10 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
2-Butanone ND 100 " " " " " "
2-Hexanone ND 50 " " " " " "
4-Methyl-2-pentanone ND 50 " " " " " "
Acetone ND 100 " " " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 10 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 10 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
565
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 42 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B10S (Composite 0-3) (21H0769-16) Soil Sampled: 08/11/21 07:40 Received: 08/11/21 17:35 cis-1,2-Dichloroethene ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B cis-1,3-Dichloropropene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
Dichlorodifluoromethane (Freon 12) ND 10 " " " " " "
Di-isopropyl ether ND 5.0 " " " " " "
Ethyl tert-butyl ether ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Methylene chloride ND 20 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
o-Chlorotoluene ND 5.0 " " " " " "
p-Chlorotoluene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
tert-Amyl methyl ether ND 5.0 " " " " " "
tert-Butyl alcohol ND 50 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
Vinyl chloride ND 10 " " " " " "
Xylenes (total) ND 10 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
566
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 43 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B10S (Composite 0-3) (21H0769-16) Soil Sampled: 08/11/21 07:40 Received: 08/11/21 17:35 Surrogate: 1,2-Dichloroethane-d4 107 % 50-125 2106830 " 08/17/21 EPA 8260B Surrogate: 4-Bromofluorobenzene 93 % 50-128 " " " "
Surrogate: Toluene-d8 92 % 62-125 " " " "
B7W (Composite 0-3) (21H0769-20) Soil Sampled: 08/11/21 11:45 Received: 08/11/21 17:35 1,1,1,2-Tetrachloroethane ND 5.0 µg/kg 1 2106830 08/13/21 08/17/21 EPA 8260B 1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2-Trichloro-1,2,2-trifluoroethane " " " " "
(Freon 113)
ND 5.0 "
1,1,2-Trichloroethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 10 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
2-Butanone ND 100 " " " " " "
2-Hexanone ND 50 " " " " " "
4-Methyl-2-pentanone ND 50 " " " " " "
Acetone ND 100 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
567
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 44 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B7W (Composite 0-3) (21H0769-20) Soil Sampled: 08/11/21 11:45 Received: 08/11/21 17:35 Benzene ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 10 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 10 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
Dichlorodifluoromethane (Freon 12) ND 10 " " " " " "
Di-isopropyl ether ND 5.0 " " " " " "
Ethyl tert-butyl ether ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Methylene chloride ND 20 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
o-Chlorotoluene ND 5.0 " " " " " "
p-Chlorotoluene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
568
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 45 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B7W (Composite 0-3) (21H0769-20) Soil Sampled: 08/11/21 11:45 Received: 08/11/21 17:35 tert-Amyl methyl ether ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B tert-Butyl alcohol ND 50 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
Vinyl chloride ND 10 " " " " " "
Xylenes (total) ND 10 " " " " " "
Surrogate: 1,2-Dichloroethane-d4 105 % 50-125 " " " "
Surrogate: 4-Bromofluorobenzene 95 % 50-128 " " " "
Surrogate: Toluene-d8 92 % 62-125 " " " "
B8E (Composite 0-3) (21H0769-24) Soil Sampled: 08/11/21 11:25 Received: 08/11/21 17:35 1,1,1,2-Tetrachloroethane ND 5.0 µg/kg 1 2106830 08/13/21 08/17/21 EPA 8260B 1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2-Trichloro-1,2,2-trifluoroethane " " " " "
(Freon 113)
ND 5.0 "
1,1,2-Trichloroethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 10 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
569
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 46 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B8E (Composite 0-3) (21H0769-24) Soil Sampled: 08/11/21 11:25 Received: 08/11/21 17:35 1,2-Dichlorobenzene ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B 1,2-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
2-Butanone ND 100 " " " " " "
2-Hexanone ND 50 " " " " " "
4-Methyl-2-pentanone ND 50 " " " " " "
Acetone ND 100 " " " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 10 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 10 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
Dichlorodifluoromethane (Freon 12) ND 10 " " " " " "
Di-isopropyl ether ND 5.0 " " " " " "
Ethyl tert-butyl ether ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
570
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 47 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B8E (Composite 0-3) (21H0769-24) Soil Sampled: 08/11/21 11:25 Received: 08/11/21 17:35 Hexachlorobutadiene ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B Isopropylbenzene ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Methylene chloride ND 20 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
o-Chlorotoluene ND 5.0 " " " " " "
p-Chlorotoluene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
tert-Amyl methyl ether ND 5.0 " " " " " "
tert-Butyl alcohol ND 50 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
Vinyl chloride ND 10 " " " " " "
Xylenes (total) ND 10 " " " " " "
Surrogate: 1,2-Dichloroethane-d4 94 % 50-125 " " " "
Surrogate: 4-Bromofluorobenzene 97 % 50-128 " " " "
Surrogate: Toluene-d8 94 % 62-125 " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
571
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 48 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B9N (Composite 0-3) (21H0769-28) Soil Sampled: 08/11/21 07:30 Received: 08/11/21 17:35 1,1,1,2-Tetrachloroethane ND 5.0 µg/kg 1 2106830 08/13/21 08/17/21 EPA 8260B 1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2-Trichloro-1,2,2-trifluoroethane " " " " "
(Freon 113)
ND 5.0 "
1,1,2-Trichloroethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 10 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
2-Butanone ND 100 " " " " " "
2-Hexanone ND 50 " " " " " "
4-Methyl-2-pentanone ND 50 " " " " " "
Acetone ND 100 " " " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
572
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 49 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B9N (Composite 0-3) (21H0769-28) Soil Sampled: 08/11/21 07:30 Received: 08/11/21 17:35 Bromoform ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B
Bromomethane ND 10 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 10 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
Dichlorodifluoromethane (Freon 12) ND 10 " " " " " "
Di-isopropyl ether ND 5.0 " " " " " "
Ethyl tert-butyl ether ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Methylene chloride ND 20 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
o-Chlorotoluene ND 5.0 " " " " " "
p-Chlorotoluene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
tert-Amyl methyl ether ND 5.0 " " " " " "
tert-Butyl alcohol ND 50 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
573
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 50 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B9N (Composite 0-3) (21H0769-28) Soil Sampled: 08/11/21 07:30 Received: 08/11/21 17:35 Toluene ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B
trans-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
Vinyl chloride ND 10 " " " " " "
Xylenes (total) ND 10 " " " " " "
Surrogate: 1,2-Dichloroethane-d4 102 % 50-125 " " " "
Surrogate: 4-Bromofluorobenzene 104 % 50-128 " " " "
Surrogate: Toluene-d8 94 % 62-125 " " " "
B4S (Composite 0-3) (21H0769-32) Soil Sampled: 08/11/21 09:50 Received: 08/11/21 17:35 1,1,1,2-Tetrachloroethane ND 5.0 µg/kg 1 2106830 08/13/21 08/17/21 EPA 8260B 1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2-Trichloro-1,2,2-trifluoroethane " " " " "
(Freon 113)
ND 5.0 "
1,1,2-Trichloroethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 10 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
574
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 51 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B4S (Composite 0-3) (21H0769-32) Soil Sampled: 08/11/21 09:50 Received: 08/11/21 17:35 1,3-Dichlorobenzene ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B 1,3-Dichloropropane ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
2-Butanone ND 100 " " " " " "
2-Hexanone ND 50 " " " " " "
4-Methyl-2-pentanone ND 50 " " " " " "
Acetone ND 100 " " " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 10 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 10 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
Dichlorodifluoromethane (Freon 12) ND 10 " " " " " "
Di-isopropyl ether ND 5.0 " " " " " "
Ethyl tert-butyl ether ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Methylene chloride ND 20 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
575
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 52 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B4S (Composite 0-3) (21H0769-32) Soil Sampled: 08/11/21 09:50 Received: 08/11/21 17:35 Naphthalene ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B n-Butylbenzene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
o-Chlorotoluene ND 5.0 " " " " " "
p-Chlorotoluene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
tert-Amyl methyl ether ND 5.0 " " " " " "
tert-Butyl alcohol ND 50 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
Vinyl chloride ND 10 " " " " " "
Xylenes (total) ND 10 " " " " " "
Surrogate: 1,2-Dichloroethane-d4 98 % 50-125 " " " "
Surrogate: 4-Bromofluorobenzene 108 % 50-128 " " " "
Surrogate: Toluene-d8 92 % 62-125 " " " "
B5N (Composite 0-3) (21H0769-36) Soil Sampled: 08/11/21 10:30 Received: 08/11/21 17:35 1,1,1,2-Tetrachloroethane ND 5.0 µg/kg 1 2106830 08/13/21 08/17/21 EPA 8260B 1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2-Trichloro-1,2,2-trifluoroethane " " " " "
(Freon 113)
ND 5.0 "
1,1,2-Trichloroethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
576
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 53 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B5N (Composite 0-3) (21H0769-36) Soil Sampled: 08/11/21 10:30 Received: 08/11/21 17:35 1,1-Dichloroethene ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B 1,1-Dichloropropene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 10 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
2-Butanone ND 100 " " " " " "
2-Hexanone ND 50 " " " " " "
4-Methyl-2-pentanone ND 50 " " " " " "
Acetone ND 100 " " " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 10 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 10 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
577
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 54 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B5N (Composite 0-3) (21H0769-36) Soil Sampled: 08/11/21 10:30 Received: 08/11/21 17:35 cis-1,2-Dichloroethene ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B cis-1,3-Dichloropropene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
Dichlorodifluoromethane (Freon 12) ND 10 " " " " " "
Di-isopropyl ether ND 5.0 " " " " " "
Ethyl tert-butyl ether ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Methylene chloride ND 20 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
o-Chlorotoluene ND 5.0 " " " " " "
p-Chlorotoluene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
tert-Amyl methyl ether ND 5.0 " " " " " "
tert-Butyl alcohol ND 50 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
Vinyl chloride ND 10 " " " " " "
Xylenes (total) ND 10 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
578
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 55 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B5N (Composite 0-3) (21H0769-36) Soil Sampled: 08/11/21 10:30 Received: 08/11/21 17:35 Surrogate: 1,2-Dichloroethane-d4 106 % 50-125 2106830 " 08/17/21 EPA 8260B Surrogate: 4-Bromofluorobenzene 106 % 50-128 " " " "
Surrogate: Toluene-d8 93 % 62-125 " " " "
B6S (Composite 0-3) (21H0769-40) Soil Sampled: 08/11/21 11:00 Received: 08/11/21 17:35 1,1,1,2-Tetrachloroethane ND 5.0 µg/kg 1 2106830 08/13/21 08/17/21 EPA 8260B 1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2-Trichloro-1,2,2-trifluoroethane " " " " "
(Freon 113)
ND 5.0 "
1,1,2-Trichloroethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 10 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
2-Butanone ND 100 " " " " " "
2-Hexanone ND 50 " " " " " "
4-Methyl-2-pentanone ND 50 " " " " " "
Acetone ND 100 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
579
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 56 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B6S (Composite 0-3) (21H0769-40) Soil Sampled: 08/11/21 11:00 Received: 08/11/21 17:35 Benzene ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 10 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 10 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
Dichlorodifluoromethane (Freon 12) ND 10 " " " " " "
Di-isopropyl ether ND 5.0 " " " " " "
Ethyl tert-butyl ether ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Methylene chloride ND 20 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
o-Chlorotoluene ND 5.0 " " " " " "
p-Chlorotoluene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
580
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 57 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B6S (Composite 0-3) (21H0769-40) Soil Sampled: 08/11/21 11:00 Received: 08/11/21 17:35 tert-Amyl methyl ether ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B tert-Butyl alcohol ND 50 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
Vinyl chloride ND 10 " " " " " "
Xylenes (total) ND 10 " " " " " "
Surrogate: 1,2-Dichloroethane-d4 102 % 50-125 " " " "
Surrogate: 4-Bromofluorobenzene 95 % 50-128 " " " "
Surrogate: Toluene-d8 94 % 62-125 " " " "
B1W (Composite 0-3) (21H0769-44) Soil Sampled: 08/11/21 13:50 Received: 08/11/21 17:35 1,1,1,2-Tetrachloroethane ND 5.0 µg/kg 1 2106830 08/13/21 08/17/21 EPA 8260B 1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2-Trichloro-1,2,2-trifluoroethane " " " " "
(Freon 113)
ND 5.0 "
1,1,2-Trichloroethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 10 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
581
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 58 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B1W (Composite 0-3) (21H0769-44) Soil Sampled: 08/11/21 13:50 Received: 08/11/21 17:35 1,2-Dichlorobenzene ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B 1,2-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
2-Butanone ND 100 " " " " " "
2-Hexanone ND 50 " " " " " "
4-Methyl-2-pentanone ND 50 " " " " " "
Acetone ND 100 " " " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 10 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 10 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
Dichlorodifluoromethane (Freon 12) ND 10 " " " " " "
Di-isopropyl ether ND 5.0 " " " " " "
Ethyl tert-butyl ether ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
582
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 59 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B1W (Composite 0-3) (21H0769-44) Soil Sampled: 08/11/21 13:50 Received: 08/11/21 17:35 Hexachlorobutadiene ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B Isopropylbenzene ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Methylene chloride ND 20 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
o-Chlorotoluene ND 5.0 " " " " " "
p-Chlorotoluene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
tert-Amyl methyl ether ND 5.0 " " " " " "
tert-Butyl alcohol ND 50 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
Vinyl chloride ND 10 " " " " " "
Xylenes (total) ND 10 " " " " " "
Surrogate: 1,2-Dichloroethane-d4 104 % 50-125 " " " "
Surrogate: 4-Bromofluorobenzene 103 % 50-128 " " " "
Surrogate: Toluene-d8 95 % 62-125 " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
583
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 60 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B2E (Composite 0-3) (21H0769-48) Soil Sampled: 08/11/21 14:50 Received: 08/11/21 17:35 1,1,1,2-Tetrachloroethane ND 5.0 µg/kg 1 2106830 08/13/21 08/17/21 EPA 8260B 1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2-Trichloro-1,2,2-trifluoroethane " " " " "
(Freon 113)
ND 5.0 "
1,1,2-Trichloroethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 10 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
1,3-Dichlorobenzene ND 5.0 " " " " " "
1,3-Dichloropropane ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
2-Butanone ND 100 " " " " " "
2-Hexanone ND 50 " " " " " "
4-Methyl-2-pentanone ND 50 " " " " " "
Acetone ND 100 " " " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
584
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 61 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B2E (Composite 0-3) (21H0769-48) Soil Sampled: 08/11/21 14:50 Received: 08/11/21 17:35 Bromoform ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B
Bromomethane ND 10 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 10 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
Dichlorodifluoromethane (Freon 12) ND 10 " " " " " "
Di-isopropyl ether ND 5.0 " " " " " "
Ethyl tert-butyl ether ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Methylene chloride ND 20 " " " " " "
Naphthalene ND 5.0 " " " " " "
n-Butylbenzene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
o-Chlorotoluene ND 5.0 " " " " " "
p-Chlorotoluene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
tert-Amyl methyl ether ND 5.0 " " " " " "
tert-Butyl alcohol ND 50 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
585
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 62 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B2E (Composite 0-3) (21H0769-48) Soil Sampled: 08/11/21 14:50 Received: 08/11/21 17:35 Toluene ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B
trans-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
Vinyl chloride ND 10 " " " " " "
Xylenes (total) ND 10 " " " " " "
Surrogate: 1,2-Dichloroethane-d4 107 % 50-125 " " " "
Surrogate: 4-Bromofluorobenzene 102 % 50-128 " " " "
Surrogate: Toluene-d8 92 % 62-125 " " " "
B3N (Composite 0-3) (21H0769-52) Soil Sampled: 08/11/21 09:30 Received: 08/11/21 17:35 1,1,1,2-Tetrachloroethane ND 5.0 µg/kg 1 2106830 08/13/21 08/17/21 EPA 8260B 1,1,1-Trichloroethane ND 5.0 " " " " " "
1,1,2,2-Tetrachloroethane ND 5.0 " " " " " "
1,1,2-Trichloro-1,2,2-trifluoroethane " " " " "
(Freon 113)
ND 5.0 "
1,1,2-Trichloroethane ND 5.0 " " " " " "
1,1-Dichloroethane ND 5.0 " " " " " "
1,1-Dichloroethene ND 5.0 " " " " " "
1,1-Dichloropropene ND 5.0 " " " " " "
1,2,3-Trichlorobenzene ND 5.0 " " " " " "
1,2,3-Trichloropropane ND 5.0 " " " " " "
1,2,4-Trichlorobenzene ND 5.0 " " " " " "
1,2,4-Trimethylbenzene ND 5.0 " " " " " "
1,2-Dibromo-3-chloropropane ND 10 " " " " " "
1,2-Dibromoethane (EDB) ND 5.0 " " " " " "
1,2-Dichlorobenzene ND 5.0 " " " " " "
1,2-Dichloroethane ND 5.0 " " " " " "
1,2-Dichloropropane ND 5.0 " " " " " "
1,3,5-Trimethylbenzene ND 5.0 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
586
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 63 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B3N (Composite 0-3) (21H0769-52) Soil Sampled: 08/11/21 09:30 Received: 08/11/21 17:35 1,3-Dichlorobenzene ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B 1,3-Dichloropropane ND 5.0 " " " " " "
1,4-Dichlorobenzene ND 5.0 " " " " " "
2,2-Dichloropropane ND 5.0 " " " " " "
2-Butanone ND 100 " " " " " "
2-Hexanone ND 50 " " " " " "
4-Methyl-2-pentanone ND 50 " " " " " "
Acetone ND 100 " " " " " "
Benzene ND 5.0 " " " " " "
Bromobenzene ND 5.0 " " " " " "
Bromochloromethane ND 5.0 " " " " " "
Bromodichloromethane ND 5.0 " " " " " "
Bromoform ND 5.0 " " " " " "
Bromomethane ND 10 " " " " " "
Carbon tetrachloride ND 5.0 " " " " " "
Chlorobenzene ND 5.0 " " " " " "
Chloroethane ND 5.0 " " " " " "
Chloroform ND 5.0 " " " " " "
Chloromethane ND 10 " " " " " "
cis-1,2-Dichloroethene ND 5.0 " " " " " "
cis-1,3-Dichloropropene ND 5.0 " " " " " "
Dibromochloromethane ND 5.0 " " " " " "
Dibromomethane ND 5.0 " " " " " "
Dichlorodifluoromethane (Freon 12) ND 10 " " " " " "
Di-isopropyl ether ND 5.0 " " " " " "
Ethyl tert-butyl ether ND 5.0 " " " " " "
Ethylbenzene ND 5.0 " " " " " "
Hexachlorobutadiene ND 5.0 " " " " " "
Isopropylbenzene ND 5.0 " " " " " "
Methyl tert-butyl ether ND 5.0 " " " " " "
Methylene chloride ND 20 " " " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
587
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 64 of 83 ends

Volatile Organic Compounds by EPA Method 8260B
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B3N (Composite 0-3) (21H0769-52) Soil Sampled: 08/11/21 09:30 Received: 08/11/21 17:35 Naphthalene ND 5.0 µg/kg 1 2106830 " 08/17/21 EPA 8260B n-Butylbenzene ND 5.0 " " " " " "
n-Propylbenzene ND 5.0 " " " " " "
o-Chlorotoluene ND 5.0 " " " " " "
p-Chlorotoluene ND 5.0 " " " " " "
p-Isopropyltoluene ND 5.0 " " " " " "
sec-Butylbenzene ND 5.0 " " " " " "
Styrene ND 5.0 " " " " " "
tert-Amyl methyl ether ND 5.0 " " " " " "
tert-Butyl alcohol ND 50 " " " " " "
tert-Butylbenzene ND 5.0 " " " " " "
Tetrachloroethene ND 5.0 " " " " " "
Toluene ND 5.0 " " " " " "
trans-1,2-Dichloroethene ND 5.0 " " " " " "
trans-1,3-Dichloropropene ND 5.0 " " " " " "
Trichloroethene ND 5.0 " " " " " "
Trichlorofluoromethane ND 5.0 " " " " " "
Vinyl chloride ND 10 " " " " " "
Xylenes (total) ND 10 " " " " " "
Surrogate: 1,2-Dichloroethane-d4 115 % 50-125 " " " "
Surrogate: 4-Bromofluorobenzene 101 % 50-128 " " " "
Surrogate: Toluene-d8 94 % 62-125 " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
588
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 65 of 83 ends

Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
CAM 17 Metals - Quality Control
Batch 2106802 - EPA 7471A
Blank (2106802-BLK1) Prepared: 08/13/21 Analyzed: 08/16/21 Mercury ND 0.10 mg/kg
LCS (2106802-BS1) Prepared: 08/13/21 Analyzed: 08/16/21 Mercury 0.221 0.10 mg/kg 0.208 106 75-125
Matrix Spike (2106802-MS1) Source: 21H0769-04 Prepared: 08/13/21 Analyzed: 08/16/21 Mercury 0.210 0.10 mg/kg 0.208 ND 101 75-125
Matrix Spike Dup (2106802-MSD1) Source: 21H0769-04 Prepared: 08/13/21 Analyzed: 08/16/21 Mercury 0.208 0.10 mg/kg 0.208 ND 100 75-125 1 25
Batch 2106813 - EPA 3050B
Blank (2106813-BLK1) Prepared & Analyzed: 08/13/21
Antimony ND 2.5 mg/kg
Arsenic ND 1.0 "
Barium ND 1.0 "
Beryllium ND 1.0 "
Cadmium ND 1.0 "
Cobalt ND 1.0 "
Chromium ND 1.0 "
Copper ND 1.0 "
Lead ND 2.5 "
Molybdenum ND 1.0 "
Nickel ND 1.0 "
Selenium ND 2.5 "
Silver ND 1.0 "
Thallium ND 4.0 "
Vanadium ND 1.0 "
Zinc ND 1.0 "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
589
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 66 of 83 ends

Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
CAM 17 Metals - Quality Control
Batch 2106813 - EPA 3050B
LCS (2106813-BS1) Prepared & Analyzed: 08/13/21
Antimony 17.9 2.5 mg/kg 20.0 90 75-125
Arsenic 18.4 1.0 " 20.0 92 75-125
Barium 18.7 1.0 " 20.0 93 75-125
Beryllium 18.2 1.0 " 20.0 91 75-125
Cadmium 18.7 1.0 " 20.0 94 75-125
Cobalt 19.1 1.0 " 20.0 96 75-125
Chromium 18.9 1.0 " 20.0 95 75-125
Copper 18.7 1.0 " 20.0 94 75-125
Lead 19.4 2.5 " 20.0 97 75-125
Molybdenum 18.6 1.0 " 20.0 93 75-125
Nickel 19.2 1.0 " 20.0 96 75-125
Selenium 17.4 2.5 " 20.0 87 75-125
Silver 21.0 1.0 " 20.0 105 75-125
Thallium 19.2 4.0 " 20.0 96 75-125
Vanadium 18.3 1.0 " 20.0 92 75-125
Zinc 18.0 1.0 " 20.0 90 75-125
Matrix Spike (2106813-MS1) Source: 21H0763-04 Prepared & Analyzed: 08/13/21 Antimony 10.5 2.5 mg/kg 20.0 ND 52 75-125 QM-5
Arsenic 21.9 1.0 " 20.0 4.48 87 75-125
Barium 73.7 1.0 " 20.0 89.7 NR 75-125 QM-5
Beryllium 18.7 1.0 " 20.0 0.414 92 75-125
Cadmium 18.7 1.0 " 20.0 0.487 91 75-125
Cobalt 24.8 1.0 " 20.0 11.4 67 75-125 QM-5
Chromium 46.5 1.0 " 20.0 39.5 35 75-125 QM-5
Copper 26.7 1.0 " 20.0 14.1 63 75-125 QM-5
Lead 26.7 2.5 " 20.0 12.8 70 75-125 QM-5
Molybdenum 18.3 1.0 " 20.0 ND 91 75-125
Nickel 45.5 1.0 " 20.0 41.3 21 75-125 QM-5
Selenium 15.7 2.5 " 20.0 ND 78 75-125
Silver 21.8 1.0 " 20.0 1.11 104 75-125
Thallium 17.2 4.0 " 20.0 ND 86 75-125
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
590
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 67 of 83 ends

Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
CAM 17 Metals - Quality Control
Batch 2106813 - EPA 3050B
Matrix Spike (2106813-MS1) Source: 21H0763-04 Prepared & Analyzed: 08/13/21 Vanadium 47.9 1.0 mg/kg 20.0 39.4 42 75-125 QM-5
Zinc 47.4 1.0 " 20.0 39.9 37 75-125 QM-5
Matrix Spike Dup (2106813-MSD1) Source: 21H0763-04 Prepared & Analyzed: 08/13/21 Antimony 6.87 2.5 mg/kg 20.0 ND 34 75-125 41 30 QM-5
Arsenic 21.8 1.0 " 20.0 4.48 86 75-125 0.8 30
Barium 104 1.0 " 20.0 89.7 70 75-125 34 30 QM-5
Beryllium 17.8 1.0 " 20.0 0.414 87 75-125 5 30
Cadmium 17.7 1.0 " 20.0 0.487 86 75-125 5 30
Cobalt 26.2 1.0 " 20.0 11.4 74 75-125 6 30 QM-5
Chromium 57.1 1.0 " 20.0 39.5 88 75-125 21 30
Copper 31.1 1.0 " 20.0 14.1 85 75-125 15 30
Lead 30.1 2.5 " 20.0 12.8 86 75-125 12 30
Molybdenum 16.6 1.0 " 20.0 ND 83 75-125 10 30
Nickel 54.8 1.0 " 20.0 41.3 68 75-125 19 30 QM-5
Selenium 13.8 2.5 " 20.0 ND 69 75-125 13 30 QM-5
Silver 20.7 1.0 " 20.0 1.11 98 75-125 5 30
Thallium 15.4 4.0 " 20.0 ND 77 75-125 11 30
Vanadium 59.4 1.0 " 20.0 39.4 100 75-125 22 30
Zinc 60.7 1.0 " 20.0 39.9 104 75-125 25 30
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
591
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 68 of 83 ends

Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Extractable Petroleum Hydrocarbons by EPA Method 8015M - Quality Control Batch 2106891 - EPA 3510B GCNV
Blank (2106891-BLK1) Prepared: 08/16/21 Analyzed: 08/17/21 Diesel ND 1.0 mg/kg
Motor Oil ND 1.0 "
Surrogate: o-Terphenyl 0.448 " 0.500 90 65-135
LCS (2106891-BS1) Prepared: 08/16/21 Analyzed: 08/17/21 Diesel 39.6 1.0 mg/kg 50.0 79 65-135
Surrogate: o-Terphenyl 0.409 " 0.500 82 65-135
LCS Dup (2106891-BSD1) Prepared: 08/16/21 Analyzed: 08/17/21 Diesel 41.3 1.0 mg/kg 50.0 83 65-135 4 30
Surrogate: o-Terphenyl 0.402 " 0.500 80 65-135
Matrix Spike (2106891-MS1) Source: 21H0769-04 Prepared: 08/16/21 Analyzed: 08/17/21 Diesel 44.9 1.0 mg/kg 50.0 ND 90 59-138
Surrogate: o-Terphenyl 0.395 " 0.500 79 65-135
Matrix Spike Dup (2106891-MSD1) Source: 21H0769-04 Prepared: 08/16/21 Analyzed: 08/17/21 Diesel 33.7 1.0 mg/kg 50.0 ND 67 59-138 29 37
Surrogate: o-Terphenyl 0.320 " 0.500 64 65-135 QS-4
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
592
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 69 of 83 ends

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 Batch 2106787 - EPA 3050B
Blank (2106787-BLK1) Prepared & Analyzed: 08/13/21
Lead ND 2.5 mg/kg
LCS (2106787-BS1) Prepared & Analyzed: 08/13/21
Lead 91.6 2.5 mg/kg 100 92 75-125
Matrix Spike (2106787-MS1) Source: 21H0763-01 Prepared & Analyzed: 08/13/21 Lead 90.9 2.5 mg/kg 100 10.9 80 75-125
Matrix Spike Dup (2106787-MSD1) Source: 21H0763-01 Prepared & Analyzed: 08/13/21 Lead 81.9 2.5 mg/kg 100 10.9 71 75-125 11 30 QM-5
Batch 2106816 - EPA 3050B
Blank (2106816-BLK1) Prepared & Analyzed: 08/13/21
Lead ND 1.3 mg/kg
LCS (2106816-BS1) Prepared & Analyzed: 08/13/21
Lead 97.0 1.3 mg/kg 100 97 75-125
Matrix Spike (2106816-MS1) Source: 21H0769-11 Prepared: 08/13/21 Analyzed: 08/14/21 Lead 88.4 1.3 mg/kg 100 4.97 83 75-125
Matrix Spike Dup (2106816-MSD1) Source: 21H0769-11 Prepared: 08/13/21 Analyzed: 08/14/21 Lead 84.1 1.3 mg/kg 100 4.97 79 75-125 5 30
Batch 2106844 - EPA 3050B
Blank (2106844-BLK1) Prepared & Analyzed: 08/16/21
Lead ND 2.5 mg/kg
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
593
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 70 of 83 ends

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 Batch 2106844 - EPA 3050B
LCS (2106844-BS1) Prepared & Analyzed: 08/16/21
Lead 84.8 2.5 mg/kg 100 85 75-125
Matrix Spike (2106844-MS1) Source: 21H0769-38 Prepared & Analyzed: 08/16/21 Lead 119 2.5 mg/kg 100 134 NR 75-125 QM-5
Matrix Spike Dup (2106844-MSD1) Source: 21H0769-38 Prepared & Analyzed: 08/16/21 Lead 135 2.5 mg/kg 100 134 2 75-125 13 30 QM-5
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
594
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 71 of 83 ends

Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Organochlorine Pesticides by EPA Method 8081A - Quality Control Batch 2106776 - LUFT-DHS GCNV
Blank (2106776-BLK1) Prepared: 08/12/21 Analyzed: 08/13/21 Aldrin ND 1.0 µg/kg
alpha-BHC ND 1.7 "
beta-BHC ND 1.7 "
gamma-BHC (Lindane) ND 1.7 "
delta-BHC ND 1.7 "
Chlordane-technical ND 3.3 "
4,4¥-DDD ND 3.3 "
4,4¥-DDE ND 3.3 "
4,4¥-DDT ND 3.3 "
Dieldrin ND 1.0 "
Endosulfan I ND 1.7 "
Endosulfan II ND 3.3 "
Endosulfan sulfate ND 3.3 "
Endrin ND 3.3 "
Endrin aldehyde ND 3.3 "
Heptachlor ND 1.7 "
Heptachlor epoxide ND 1.7 "
Methoxychlor ND 17 "
Mirex ND 3.3 "
Toxaphene ND 20 "
Surrogate: Tetrachloro-meta-xylene 4.79 " 8.33 57 46-139 Surrogate: Decachlorobiphenyl 7.65 " 8.33 92 52-141
LCS (2106776-BS1) Prepared: 08/12/21 Analyzed: 08/13/21 Aldrin 17.7 1.0 µg/kg 16.7 106 47-132
gamma-BHC (Lindane) 18.4 1.7 " 16.7 110 56-133
4,4¥-DDT 21.7 3.3 " 16.7 130 46-137
Dieldrin 20.6 1.0 " 16.7 124 44-143
Endrin 24.1 3.3 " 16.7 145 30-147
Heptachlor 19.4 1.7 " 16.7 117 33-148
Surrogate: Tetrachloro-meta-xylene 5.14 " 8.33 62 46-139 3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
595
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 72 of 83 ends

Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Organochlorine Pesticides by EPA Method 8081A - Quality Control Batch 2106776 - LUFT-DHS GCNV
LCS (2106776-BS1) Prepared: 08/12/21 Analyzed: 08/13/21 Surrogate: Decachlorobiphenyl 8.21 µg/kg 8.33 98 52-141 LCS Dup (2106776-BSD1) Prepared: 08/12/21 Analyzed: 08/13/21 Aldrin 17.2 1.0 µg/kg 16.7 103 47-132 3 30
gamma-BHC (Lindane) 17.5 1.7 " 16.7 105 56-133 5 30
4,4¥-DDT 21.8 3.3 " 16.7 131 46-137 0.6 30
Dieldrin 20.2 1.0 " 16.7 121 44-143 2 30
Endrin 23.2 3.3 " 16.7 139 30-147 4 30
Heptachlor 18.0 1.7 " 16.7 108 33-148 8 30
Surrogate: Tetrachloro-meta-xylene 5.53 " 8.33 66 46-139 Surrogate: Decachlorobiphenyl 8.37 " 8.33 100 52-141
Matrix Spike (2106776-MS1) Source: 21H0724-06 Prepared: 08/12/21 Analyzed: 08/13/21 QRL-8 Aldrin 16.6 5.0 µg/kg 16.7 ND 100 47-138
gamma-BHC (Lindane) 16.2 8.5 " 16.7 ND 97 38-144
4,4¥-DDT 26.5 17 " 16.7 ND 159 41-157 QM-7
Dieldrin 18.4 5.0 " 16.7 ND 110 46-155
Endrin 23.5 17 " 16.7 ND 141 34-149
Heptachlor 11.8 8.5 " 16.7 ND 71 36-155
Surrogate: Tetrachloro-meta-xylene 10.1 " 20.8 48 46-139 Surrogate: Decachlorobiphenyl 18.2 " 20.8 87 52-141
Matrix Spike Dup (2106776-MSD1) Source: 21H0724-06 Prepared: 08/12/21 Analyzed: 08/13/21 QRL-8 Aldrin 17.1 5.0 µg/kg 16.7 ND 102 47-138 3 35
gamma-BHC (Lindane) 18.4 8.5 " 16.7 ND 110 38-144 13 35 4,4¥-DDT 26.2 17 " 16.7 ND 157 41-157 0.9 35
Dieldrin 18.6 5.0 " 16.7 ND 112 46-155 1 35
Endrin 23.9 17 " 16.7 ND 143 34-149 1 35
Heptachlor 12.2 8.5 " 16.7 ND 73 36-155 3 35
Surrogate: Tetrachloro-meta-xylene 10.9 " 20.8 52 46-139 Surrogate: Decachlorobiphenyl 18.5 " 20.8 89 52-141
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
596
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 73 of 83 ends

Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Organophosphorus Pesticides by EPA Method 8141A - Quality Control Batch 2107013 - LUFT-DHS GCNV
Blank (2107013-BLK1) Prepared: 08/19/21 Analyzed: 08/20/21 Bolstar ND 2.0 µg/kg
Chlorpyrifos ND 2.0 "
Coumaphos ND 5.0 "
Demeton ND 5.0 "
Diazinon ND 2.0 "
Dichlorvos ND 5.0 "
Disulfoton ND 2.0 "
Ethoprop ND 2.0 "
Fensulfothion ND 2.0 "
Fenthion ND 2.0 "
Guthion ND 5.0 "
Malathion ND 2.0 "
Merphos ND 2.0 "
Methyl parathion ND 2.0 "
Mevinphos ND 2.0 "
Phorate ND 2.0 "
Prothiofos ND 2.0 "
Ronnel ND 2.0 "
Stirophos ND 2.0 "
Trichloronate ND 2.0 "
Surrogate: EPN 86.4 " 83.3 104 50-150
LCS (2107013-BS1) Prepared: 08/19/21 Analyzed: 08/20/21 Methyl parathion 9.93 2.0 µg/kg 8.33 119 50-150
Ronnel 8.24 2.0 " 8.33 99 50-150
Stirophos 8.68 2.0 " 8.33 104 50-150
Trichloronate 7.50 2.0 " 8.33 90 50-150
Surrogate: EPN 84.3 " 83.3 101 50-150
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
597
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 74 of 83 ends

Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Organophosphorus Pesticides by EPA Method 8141A - Quality Control Batch 2107013 - LUFT-DHS GCNV
LCS Dup (2107013-BSD1) Prepared: 08/19/21 Analyzed: 08/20/21 Methyl parathion 10.6 2.0 µg/kg 8.33 127 50-150 6 30
Ronnel 8.71 2.0 " 8.33 105 50-150 6 30
Stirophos 9.03 2.0 " 8.33 108 50-150 4 30
Trichloronate 8.46 2.0 " 8.33 102 50-150 12 30
Surrogate: EPN 84.9 " 83.3 102 50-150
Matrix Spike (2107013-MS1) Source: 21H0888-03 Prepared: 08/19/21 Analyzed: 08/20/21 QRL-8 Methyl parathion 17.1 10 µg/kg 8.33 ND 205 50-150 QM-7
Ronnel 99.1 10 " 8.33 ND NR 50-150 QM-7
Stirophos 22.7 10 " 8.33 ND 272 50-150 QM-7
Trichloronate 7.14 10 " 8.33 ND 86 50-150
Surrogate: EPN 97.1 " 83.3 117 50-150
Matrix Spike Dup (2107013-MSD1) Source: 21H0888-03 Prepared: 08/19/21 Analyzed: 08/20/21 QRL-8 Methyl parathion 12.9 10 µg/kg 8.33 ND 155 50-150 28 30 QM-7 Ronnel 110 10 " 8.33 ND NR 50-150 10 30 QM-7
Stirophos 19.9 10 " 8.33 ND 239 50-150 13 30 QM-7
Trichloronate 7.92 10 " 8.33 ND 95 50-150 10 30
Surrogate: EPN 88.4 " 83.3 106 50-150
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
598
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 75 of 83 ends

Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Polychlorinated Biphenyls by EPA Method 8082 - Quality Control Batch 2106790 - LUFT-DHS GCNV
Blank (2106790-BLK1) Prepared: 08/12/21 Analyzed: 08/13/21 Aroclor 1016 ND 20 µg/kg
Aroclor 1221 ND 20 "
Aroclor 1232 ND 20 "
Aroclor 1242 ND 20 "
Aroclor 1248 ND 20 "
Aroclor 1254 ND 20 "
Aroclor 1260 ND 20 "
Aroclor 1268 ND 20 "
Surrogate: Decachlorobiphenyl 7.85 " 8.33 94 50-150
LCS (2106790-BS1) Prepared: 08/12/21 Analyzed: 08/13/21 Aroclor 1260 83.1 20 µg/kg 83.3 100 29-131
Surrogate: Decachlorobiphenyl 8.49 " 8.33 102 50-150
LCS Dup (2106790-BSD1) Prepared: 08/12/21 Analyzed: 08/13/21 Aroclor 1260 80.5 20 µg/kg 83.3 97 29-131 3 30
Surrogate: Decachlorobiphenyl 8.29 " 8.33 99 50-150
Matrix Spike (2106790-MS1) Source: 21H0724-06 Prepared: 08/12/21 Analyzed: 08/13/21 Aroclor 1260 88.8 20 µg/kg 83.3 ND 107 29-131
Surrogate: Decachlorobiphenyl 9.38 " 8.33 113 50-150
Matrix Spike Dup (2106790-MSD1) Source: 21H0724-06 Prepared: 08/12/21 Analyzed: 08/13/21 Aroclor 1260 79.9 20 µg/kg 83.3 ND 96 29-131 10 30
Surrogate: Decachlorobiphenyl 8.40 " 8.33 101 50-150
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
599
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 76 of 83 ends

Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Polynuclear Aromatic Compounds by EPA Method 8310 - Quality Control Batch 2106847 - LUFT-DHS HPLC
Blank (2106847-BLK1) Prepared: 08/16/21 Analyzed: 08/17/21 Naphthalene ND 17 µg/kg
Acenaphthylene ND 17 "
Acenaphthene ND 17 "
Fluorene ND 17 "
Phenanthrene ND 17 "
Anthracene ND 17 "
Fluoranthene ND 17 "
Pyrene ND 17 "
Benzo (a) anthracene ND 17 "
Chrysene ND 17 "
Benzo (b) fluoranthene ND 17 "
Benzo (k) fluoranthene ND 17 "
Benzo (a) pyrene ND 17 "
Dibenz (a,h) anthracene ND 17 "
Benzo (g,h,i) perylene ND 17 "
Indeno (1,2,3-cd) pyrene ND 17 "
Surrogate: Terphenyl-dl4 73.7 " 83.3 88 70-130
LCS (2106847-BS1) Prepared: 08/16/21 Analyzed: 08/17/21 Phenanthrene 62.1 17 µg/kg 83.3 74 70-130
Chrysene 61.5 17 " 83.3 74 70-130
Benzo (g,h,i) perylene 63.3 17 " 83.3 76 70-130
Surrogate: Terphenyl-dl4 73.8 " 83.3 89 70-130
LCS Dup (2106847-BSD1) Prepared: 08/16/21 Analyzed: 08/17/21 Phenanthrene 58.5 17 µg/kg 83.3 70 70-130 6 30
Chrysene 60.1 17 " 83.3 72 70-130 2 30
Benzo (g,h,i) perylene 60.5 17 " 83.3 73 70-130 4 30
Surrogate: Terphenyl-dl4 72.9 " 83.3 88 70-130
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
600
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 77 of 83 ends

Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
Polynuclear Aromatic Compounds by EPA Method 8310 - Quality Control Batch 2106847 - LUFT-DHS HPLC
Matrix Spike (2106847-MS1) Source: 21H0769-36 Prepared: 08/16/21 Analyzed: 08/17/21 Phenanthrene 56.7 17 µg/kg 83.3 ND 68 60-140
Chrysene 66.3 17 " 83.3 ND 80 60-140
Benzo (g,h,i) perylene 62.0 17 " 83.3 ND 74 60-140
Surrogate: Terphenyl-dl4 59.1 " 83.3 71 70-130
Matrix Spike Dup (2106847-MSD1) Source: 21H0769-36 Prepared: 08/16/21 Analyzed: 08/17/21 Phenanthrene 63.6 17 µg/kg 83.3 ND 76 60-140 11 35
Chrysene 61.9 17 " 83.3 ND 74 60-140 7 35
Benzo (g,h,i) perylene 68.8 17 " 83.3 ND 83 60-140 10 35 Surrogate: Terphenyl-dl4 62.2 " 83.3 75 70-130
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
601
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 78 of 83 ends

Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
TPH-Gasoline by GC/MS - Quality Control
Batch 2106830 - EPA 5030 Soil MS
Blank (2106830-BLK1) Prepared: 08/13/21 Analyzed: 08/17/21 Gasoline ND 0.20 mg/kg
Surrogate: Toluene-d8 0.0319 " 0.0300 106 65-135
LCS (2106830-BS1) Prepared: 08/13/21 Analyzed: 08/17/21 Gasoline 2.01 0.20 mg/kg 2.00 100 65-135
Surrogate: Toluene-d8 0.0332 " 0.0300 111 65-135
LCS Dup (2106830-BSD1) Prepared: 08/13/21 Analyzed: 08/17/21 Gasoline 1.97 0.20 mg/kg 2.00 98 65-135 2 30
Surrogate: Toluene-d8 0.0328 " 0.0300 109 65-135
Matrix Spike (2106830-MS1) Source: 21H0769-20 Prepared: 08/13/21 Analyzed: 08/17/21 Gasoline 2.00 0.20 mg/kg 2.00 ND 100 63-124
Surrogate: Toluene-d8 0.0300 " 0.0300 100 65-135
Matrix Spike Dup (2106830-MSD1) Source: 21H0769-20 Prepared: 08/13/21 Analyzed: 08/17/21 Gasoline 1.88 0.20 mg/kg 2.00 ND 94 63-124 6 35
Surrogate: Toluene-d8 0.0303 " 0.0300 101 65-135
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
602
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 79 of 83 ends

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 Batch 2106830 - EPA 5030 Soil MS
Blank (2106830-BLK1) Prepared: 08/13/21 Analyzed: 08/17/21 Acetone ND 100 µg/kg
Benzene ND 5.0 "
Bromobenzene ND 5.0 "
Bromochloromethane ND 5.0 "
Bromodichloromethane ND 5.0 "
Bromoform ND 5.0 "
Bromomethane ND 10 "
2-Butanone ND 100 "
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 10 "
o-Chlorotoluene ND 5.0 "
p-Chlorotoluene ND 5.0 "
Dibromochloromethane ND 5.0 "
1,2-Dibromo-3-chloropropane ND 10 "
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 (Freon 12) ND 10 "
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 "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
603
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 80 of 83 ends

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 Batch 2106830 - EPA 5030 Soil MS
Blank (2106830-BLK1) Prepared: 08/13/21 Analyzed: 08/17/21 1,2-Dichloropropane ND 5.0 µg/kg
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 "
1,1,2-Trichloro-1,2,2-trifluoroethane (Freon
113)
ND 5.0 "
Hexachlorobutadiene ND 5.0 "
2-Hexanone ND 50 "
Isopropylbenzene ND 5.0 "
p-Isopropyltoluene ND 5.0 "
Methylene chloride ND 20 "
4-Methyl-2-pentanone ND 50 "
Methyl tert-butyl ether ND 5.0 "
Naphthalene ND 5.0 "
n-Propylbenzene ND 5.0 "
Styrene ND 5.0 "
1,1,2,2-Tetrachloroethane ND 5.0 "
1,1,1,2-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 "
1,1,2-Trichloroethane ND 5.0 "
1,1,1-Trichloroethane ND 5.0 "
Trichloroethene ND 5.0 "
Trichlorofluoromethane ND 5.0 "
1,2,3-Trichloropropane ND 5.0 "
1,3,5-Trimethylbenzene ND 5.0 "
1,2,4-Trimethylbenzene ND 5.0 "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
604
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 81 of 83 ends

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 Batch 2106830 - EPA 5030 Soil MS
Blank (2106830-BLK1) Prepared: 08/13/21 Analyzed: 08/17/21 Vinyl chloride ND 10 µg/kg
Xylenes (total) ND 10 "
Di-isopropyl ether ND 5.0 "
Ethyl tert-butyl ether ND 5.0 "
tert-Amyl methyl ether ND 5.0 "
tert-Butyl alcohol ND 50 "
Surrogate: 1,2-Dichloroethane-d4 30.6 " 30.0 102 50-125 Surrogate: Toluene-d8 28.4 " 30.0 95 62-125
Surrogate: 4-Bromofluorobenzene 27.2 " 30.0 91 50-128
LCS (2106830-BS1) Prepared: 08/13/21 Analyzed: 08/17/21 Benzene 20.0 5.0 µg/kg 20.0 100 64-135
Chlorobenzene 20.3 5.0 " 20.0 101 67-133
1,1-Dichloroethene 21.5 5.0 " 20.0 107 53-137
Toluene 19.3 5.0 " 20.0 96 61-138
Trichloroethene 19.4 5.0 " 20.0 97 64-130
Surrogate: 1,2-Dichloroethane-d4 32.1 " 30.0 107 50-125 Surrogate: Toluene-d8 29.8 " 30.0 99 62-125
Surrogate: 4-Bromofluorobenzene 32.2 " 30.0 107 50-128
LCS Dup (2106830-BSD1) Prepared: 08/13/21 Analyzed: 08/17/21 Benzene 20.2 5.0 µg/kg 20.0 101 64-135 1 30
Chlorobenzene 20.7 5.0 " 20.0 103 67-133 2 30
1,1-Dichloroethene 21.8 5.0 " 20.0 109 53-137 1 30
Toluene 19.6 5.0 " 20.0 98 61-138 2 30
Trichloroethene 19.8 5.0 " 20.0 99 64-130 2 30
Surrogate: 1,2-Dichloroethane-d4 31.7 " 30.0 106 50-125 Surrogate: Toluene-d8 29.5 " 30.0 98 62-125
Surrogate: 4-Bromofluorobenzene 31.9 " 30.0 106 50-128
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
605
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 82 of 83 ends

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 Batch 2106830 - EPA 5030 Soil MS
Matrix Spike (2106830-MS1) Source: 21H0769-20 Prepared: 08/13/21 Analyzed: 08/17/21 Benzene 18.9 5.0 µg/kg 20.0 ND 94 58-139
Chlorobenzene 18.5 5.0 " 20.0 ND 92 62-134
1,1-Dichloroethene 22.9 5.0 " 20.0 ND 115 53-152
Toluene 17.6 5.0 " 20.0 ND 88 58-139
Trichloroethene 18.4 5.0 " 20.0 ND 92 55-138
Surrogate: 1,2-Dichloroethane-d4 34.0 " 30.0 113 50-125 Surrogate: Toluene-d8 29.7 " 30.0 99 62-125
Surrogate: 4-Bromofluorobenzene 30.3 " 30.0 101 50-128
Matrix Spike Dup (2106830-MSD1) Source: 21H0769-20 Prepared: 08/13/21 Analyzed: 08/17/21 Benzene 20.2 5.0 µg/kg 20.0 ND 101 58-139 7 30
Chlorobenzene 18.9 5.0 " 20.0 ND 95 62-134 2 30
1,1-Dichloroethene 23.6 5.0 " 20.0 ND 118 53-152 3 30
Toluene 18.7 5.0 " 20.0 ND 94 58-139 6 30
Trichloroethene 19.3 5.0 " 20.0 ND 97 55-138 5 30
Surrogate: 1,2-Dichloroethane-d4 34.0 " 30.0 113 50-125 Surrogate: Toluene-d8 29.9 " 30.0 100 62-125
Surrogate: 4-Bromofluorobenzene 30.6 " 30.0 102 50-128
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
606
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/25/21 10:34
Walnut Creek, CA 94596
CLS Work Order #: 21H0769
COC #: 214233, -5, -4, -6, -8

Page 83 of 83 ends

Notes and Definitions
QS-4 The surrogate recovery for this sample is outside of established control limits due to a sample matrix effect.

QRL-8 The extract of this sample was dark and/or oily. Therefore, the sample was analyzed with a dilution and the reporting limit was raised for all target compounds.

QM-7 The spike recovery was outside acceptance limits for the MS and/or MSD. The batch was accepted based on acceptable LCS and/or LCSD recovery.

QM-5 The spike recovery was outside acceptance limits for the MS and/or MSD due to matrix interference. The LCS and/or LCSD were within acceptance limits showing that the laboratory is in control and the data is acceptable.

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 (or method detection limit when specified) DET Analyte DETECTED
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
607
WRECO - Walnut Creek
Enclosed are the results of analyses for samples received by the laboratory on 08/19/21 10:13. Samples were analyzed pursuant to client request utilizing EPA or other ELAP approved methodologies. I certify that the results are in compliance both technically and for completeness.

Analytical results are attached to this letter. Please call if we can provide additional assistance.

Sincerely,
James Liang, Ph.D.

Laboratory Director
CA SWRCB ELAP Accreditation/Registration number 1233
Project Name: HSIP P21042
Walnut Creek, CA 94596
1243 Alpine Rd Suite 108
Elizabeth Gant
August 24, 2021 CLS Work Order #: 21H1210
COC #: GREEN
Attachment 3
608
Attachment 3
609
Attachment 3
610
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/24/21 15:59
Walnut Creek, CA 94596
CLS Work Order #: 21H1210
COC #: GREEN

Page 2 of 7 ends

STLC (WET) Metals by 6000/7000 Series Methods
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B11W (Composite 0-3) (21H1210-04) Soil Sampled: 08/11/21 14:30 Received: 08/19/21 10:13 Chromium ND 0.50 mg/L 1 2107095 08/23/21 08/23/21 EPA 6010B B12E (Composite 0-3) (21H1210-08) Soil Sampled: 08/11/21 15:20 Received: 08/19/21 10:13 Chromium ND 0.50 mg/L 1 2107095 08/23/21 08/23/21 EPA 6010B B10S (Composite 0-3) (21H1210-16) Soil Sampled: 08/11/21 07:40 Received: 08/19/21 10:13 Chromium ND 0.50 mg/L 1 2107095 08/23/21 08/23/21 EPA 6010B B4S (Composite 0-3) (21H1210-32) Soil Sampled: 08/11/21 09:50 Received: 08/19/21 10:13 Chromium ND 0.50 mg/L 1 2107095 08/23/21 08/23/21 EPA 6010B B5N (Composite 0-3) (21H1210-36) Soil Sampled: 08/11/21 10:30 Received: 08/19/21 10:13 Chromium ND 0.50 mg/L 1 2107095 08/23/21 08/23/21 EPA 6010B Lead 2.2 0.50 " " " " " "
B6S (1-2) (21H1210-38) Soil Sampled: 08/11/21 11:00 Received: 08/19/21 10:13 Lead 7.9 0.50 mg/L 1 2107095 08/23/21 08/23/21 EPA 6010B B6S (2-3) (21H1210-39) Soil Sampled: 08/11/21 11:00 Received: 08/19/21 10:13 Lead 7.3 0.50 mg/L 1 2107095 08/23/21 08/23/21 EPA 6010B B6S (Composite 0-3) (21H1210-40) Soil Sampled: 08/11/21 11:00 Received: 08/19/21 10:13 Lead 5.2 0.50 mg/L 1 2107095 08/23/21 08/23/21 EPA 6010B B3N (Composite 0-3) (21H1210-52) Soil Sampled: 08/11/21 09:30 Received: 08/19/21 10:13 Chromium ND 0.50 mg/L 1 2107095 08/23/21 08/23/21 EPA 6010B 3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
611
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/24/21 15:59
Walnut Creek, CA 94596
CLS Work Order #: 21H1210
COC #: GREEN

Page 3 of 7 ends

STLC (WET) Organochlorine Pesticides by EPA Method 8081A Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B11W (Composite 0-3) (21H1210-04) Soil Sampled: 08/11/21 14:30 Received: 08/19/21 10:13 Chlordane ND 5.0 µg/L 1 2107088 08/23/21 08/23/21 EPA 8081A Surrogate: Decachlorobiphenyl 91 % 52-141 " " " "
Surrogate: Tetrachloro-meta-xylene 67 % 46-139 " " " "
B12E (Composite 0-3) (21H1210-08) Soil Sampled: 08/11/21 15:20 Received: 08/19/21 10:13 4,4¥-DDE ND 1.0 µg/L 1 2107088 08/23/21 08/23/21 EPA 8081A 4,4¥-DDT ND 1.0 " " " " " "
Dieldrin ND 1.0 " " " " " "
Surrogate: Decachlorobiphenyl 82 % 52-141 " " " "
Surrogate: Tetrachloro-meta-xylene 70 % 46-139 " " " "
B13W (Composite 0-3) (21H1210-12) Soil Sampled: 08/11/21 15:45 Received: 08/19/21 10:13 4,4¥-DDE ND 1.0 µg/L 1 2107088 08/23/21 08/23/21 EPA 8081A 4,4¥-DDT ND 1.0 " " " " " "
Dieldrin ND 1.0 " " " " " "
Surrogate: Decachlorobiphenyl 91 % 52-141 " " " "
Surrogate: Tetrachloro-meta-xylene 52 % 46-139 " " " "
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
612
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/24/21 15:59
Walnut Creek, CA 94596
CLS Work Order #: 21H1210
COC #: GREEN

Page 4 of 7 ends

Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
STLC (WET) Metals by 6000/7000 Series Methods - Quality Control Batch 2107095 - EPA 3010A
Blank (2107095-BLK1) Prepared & Analyzed: 08/23/21
Lead ND 0.50 mg/L
Chromium ND 0.50 "
LCS (2107095-BS1) Prepared & Analyzed: 08/23/21
Lead 23.5 0.50 mg/L 25.0 94 75-125
Chromium 24.1 0.50 " 25.0 96 80-120
Matrix Spike (2107095-MS1) Source: 21H1182-01 Prepared & Analyzed: 08/23/21 Lead 21.9 0.50 mg/L 25.0 0.134 87 75-125
Chromium 23.9 0.50 " 25.0 0.186 95 75-125
Matrix Spike Dup (2107095-MSD1) Source: 21H1182-01 Prepared & Analyzed: 08/23/21 Lead 24.4 0.50 mg/L 25.0 0.134 97 75-125 11 30
Chromium 26.4 0.50 " 25.0 0.186 105 75-125 10 30
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
613
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/24/21 15:59
Walnut Creek, CA 94596
CLS Work Order #: 21H1210
COC #: GREEN

Page 5 of 7 ends

Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
STLC (WET) Organochlorine Pesticides by EPA Method 8081A - Quality Control Batch 2107088 - EPA 3510B GCNV
Blank (2107088-BLK1) Prepared & Analyzed: 08/23/21
Aldrin ND 0.50 µg/L
alpha-BHC ND 0.50 "
beta-BHC ND 0.50 "
delta-BHC ND 0.50 "
gamma-BHC (Lindane) ND 0.50 "
Chlordane ND 5.0 "
4,4¥-DDD ND 1.0 "
4,4¥-DDE ND 1.0 "
4,4¥-DDT ND 1.0 "
Dieldrin ND 1.0 "
Endosulfan I ND 0.50 "
Endosulfan II ND 1.0 "
Endosulfan sulfate ND 1.0 "
Endrin ND 1.0 "
Endrin aldehyde ND 1.0 "
Heptachlor ND 0.50 "
Heptachlor epoxide ND 0.50 "
Methoxychlor ND 5.0 "
Mirex ND 1.0 "
Toxaphene ND 10 "
Surrogate: Tetrachloro-meta-xylene 1.38 " 2.50 55 46-139 Surrogate: Decachlorobiphenyl 2.23 " 2.50 89 52-141
LCS (2107088-BS1) Prepared & Analyzed: 08/23/21
Aldrin 5.77 0.50 µg/L 5.00 115 47-132
gamma-BHC (Lindane) 6.11 0.50 " 5.00 122 56-133
4,4¥-DDT 6.25 1.0 " 5.00 125 46-137
Dieldrin 6.49 1.0 " 5.00 130 44-143
Endrin 7.08 1.0 " 5.00 142 30-147
Heptachlor 5.55 0.50 " 5.00 111 33-148
Surrogate: Tetrachloro-meta-xylene 1.69 " 2.50 68 46-139 Surrogate: Decachlorobiphenyl 1.32 " 2.50 53 52-141
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
614
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/24/21 15:59
Walnut Creek, CA 94596
CLS Work Order #: 21H1210
COC #: GREEN

Page 6 of 7 ends

Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
STLC (WET) Organochlorine Pesticides by EPA Method 8081A - Quality Control Batch 2107088 - EPA 3510B GCNV
LCS Dup (2107088-BSD1) Prepared & Analyzed: 08/23/21
Aldrin 4.11 0.50 µg/L 5.00 82 47-132 34 30 QR-2
gamma-BHC (Lindane) 4.15 0.50 " 5.00 83 56-133 38 30 QR-2 4,4¥-DDT 6.76 1.0 " 5.00 135 46-137 8 30
Dieldrin 6.00 1.0 " 5.00 120 44-143 8 30
Endrin 6.89 1.0 " 5.00 138 30-147 3 30
Heptachlor 4.01 0.50 " 5.00 80 33-148 32 30 QR-2
Surrogate: Tetrachloro-meta-xylene 1.41 " 2.50 56 46-139 Surrogate: Decachlorobiphenyl 1.46 " 2.50 58 52-141
Matrix Spike (2107088-MS1) Source: 21H1210-04 Prepared & Analyzed: 08/23/21 Aldrin 4.40 0.50 µg/L 5.00 ND 88 47-138
gamma-BHC (Lindane) 4.59 0.50 " 5.00 ND 92 38-144
4,4¥-DDT 7.66 1.0 " 5.00 ND 153 41-157
Dieldrin 5.73 1.0 " 5.00 ND 115 46-155
Endrin 6.89 1.0 " 5.00 ND 138 34-149
Heptachlor 4.09 0.50 " 5.00 ND 82 36-155
Surrogate: Tetrachloro-meta-xylene 1.27 " 2.50 51 46-139 Surrogate: Decachlorobiphenyl 2.24 " 2.50 90 52-141
Matrix Spike Dup (2107088-MSD1) Source: 21H1210-04 Prepared & Analyzed: 08/23/21 Aldrin 4.49 0.50 µg/L 5.00 ND 90 47-138 2 35
gamma-BHC (Lindane) 4.70 0.50 " 5.00 ND 94 38-144 2 35
4,4¥-DDT 7.20 1.0 " 5.00 ND 144 41-157 6 35
Dieldrin 5.52 1.0 " 5.00 ND 110 46-155 4 35
Endrin 6.63 1.0 " 5.00 ND 133 34-149 4 35
Heptachlor 4.23 0.50 " 5.00 ND 85 36-155 3 35
Surrogate: Tetrachloro-meta-xylene 1.53 " 2.50 61 46-139 Surrogate: Decachlorobiphenyl 2.21 " 2.50 89 52-141
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
615
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21042
P21042
Elizabeth Gant
08/24/21 15:59
Walnut Creek, CA 94596
CLS Work Order #: 21H1210
COC #: GREEN

Page 7 of 7 ends

Notes and Definitions
QR-2 The RPD result exceeded the QC control limits; however, both percent recoveries were acceptable. Sample results for the QC batch were accepted based on percent recoveries and completeness of QC data.

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 (or method detection limit when specified) DET Analyte DETECTED
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
616
WRECO - Walnut Creek
Enclosed are the results of analyses for samples received by the laboratory on 08/24/21 16:21. Samples were analyzed pursuant to client request utilizing EPA or other ELAP approved methodologies. I certify that the results are in compliance both technically and for completeness.

Analytical results are attached to this letter. Please call if we can provide additional assistance.

Sincerely,
James Liang, Ph.D.

Laboratory Director
CA SWRCB ELAP Accreditation/Registration number 1233
Project Name: HSIP P21038
Walnut Creek, CA 94596
1243 Alpine Rd Suite 108
Elizabeth Gant
August 27, 2021 CLS Work Order #: 21H1454
COC #: GREEN
Attachment 3
617
Attachment 3
618
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21038
P21038
Elizabeth Gant
08/27/21 15:24
Walnut Creek, CA 94596
CLS Work Order #: 21H1454
COC #: GREEN

Page 2 of 4 ends

TCLP Metals by 6000/7000 Series Methods
Analyte Result Limit
Reporting
Units Dilution Batch Prepared Analyzed Method Notes
B17SE (2-3) (21H1454-15) Soil Sampled: 08/11/21 08:50 Received: 08/24/21 16:21 Lead ND 0.50 mg/L 1 2107225 08/26/21 08/27/21 EPA 6010B 3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
619
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21038
P21038
Elizabeth Gant
08/27/21 15:24
Walnut Creek, CA 94596
CLS Work Order #: 21H1454
COC #: GREEN

Page 3 of 4 ends

Result Limit
Reporting
Units Level
Spike
Result
Source
%REC
%REC
Limits RPD
RPD
Analyte Limit Notes
TCLP Metals by 6000/7000 Series Methods - Quality Control Batch 2107225 - EPA 3010A
Blank (2107225-BLK1) Prepared: 08/26/21 Analyzed: 08/27/21 Lead ND 0.50 mg/L
LCS (2107225-BS1) Prepared: 08/26/21 Analyzed: 08/27/21 Lead 26.1 0.50 mg/L 25.0 104 75-125
Matrix Spike (2107225-MS1) Source: 21H1455-38 Prepared: 08/26/21 Analyzed: 08/27/21 Lead 26.3 0.50 mg/L 25.0 0.0513 105 75-125
Matrix Spike Dup (2107225-MSD1) Source: 21H1455-38 Prepared: 08/26/21 Analyzed: 08/27/21 Lead 26.5 0.50 mg/L 25.0 0.0513 106 75-125 0.9 30
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
620
Project:

Project Number:

Project Manager:

WRECO - Walnut Creek
1243 Alpine Rd Suite 108
HSIP P21038
P21038
Elizabeth Gant
08/27/21 15:24
Walnut Creek, CA 94596
CLS Work Order #: 21H1454
COC #: GREEN

Page 4 of 4 ends

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 (or method detection limit when specified) DET Analyte DETECTED
3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation/Registration Number 1233 Attachment 3
621
Preliminary Site Investigation Federal Project No. HSIPL-5447(048) Highway Safety Improvement Program Cycle 9 - Traffic Signal Improvements WRECO P21038 City of West Sacramento, Yolo County, California
December 2021
Highway Safety Improvement Program Cycle 9 - Traffic Signal Improvements City of West Sacramento, Yolo County, California
Federal Project No. HSIPL-5447(048)
Preliminary Site Investigation
Prepared for: Prepared by:

Attachment 3
622
Preliminary Site Investigation Federal Project No. HSIPL-5447(048) Highway Safety Improvement Program Cycle 9 - Traffic Signal Improvements WRECO P21038 City of West Sacramento, Yolo County, California
December 2021
Highway Safety Improvement Program Cycle 9 - Traffic Signal Improvements City of West Sacramento, Yolo County, California
Federal Project No. HSIPL-5447(048)
Preliminary Site Investigation
Submitted to: City of West Sacramento
This report has been prepared by or under the supervision of the following Professional Geologist.

The Registered Professional Geologist attests to the technical information contained herein and has judged the qualifications of any technical specialists providing environmental data upon which recommendations, conclusions, and decisions are based.
_______________________________
Melissa McAssey
Professional Geologist #8132
_______________________________
Date
12/08/2021
Attachment 3
623
Preliminary Site Investigation Federal Project No. HSIPL-5447(048) Highway Safety Improvement Program Cycle 9 - Traffic Signal Improvements WRECO P21038 City of West Sacramento, Yolo County, California
December 2021 i
Table of Contents
Executive Summary....................................................................................................................... iii 1 INTRODUCTION ...........................................................................................................1

1.1 Project Description...........................................................................................................1

1.2 Current Land Use.............................................................................................................5 2 PROJECT AREA SETTING...........................................................................................8

2.1 Physical Setting................................................................................................................8

2.1.1 Topography.....................................................................................................................8

2.1.2 Regional Geology ...........................................................................................................8

2.1.3 Local Geology and Soils.................................................................................................8

2.1.4 Naturally Occurring Asbestos ......................................................................................10

2.1.5 Groundwater Hydrology...............................................................................................10

2.1.6 Surface Water Hydrology.............................................................................................10 3 PRELIMINARY SITE INVESTIGATION...................................................................14

3.1 Soil Sampling Methods and Procedures........................................................................14

3.2 Analytical Results..........................................................................................................17

3.3 Hazardous Waste Determination Criteria ......................................................................23

3.4 Results and Findings......................................................................................................24 4 CONCLUSIONS AND RECOMMENDATIONS ........................................................25

4.1.1 Arsenic in Soil ..............................................................................................................25

4.1.2 Chromium in Soil .........................................................................................................25

4.1.3 Lead in Soil...................................................................................................................26

4.2 Worker Safety ................................................................................................................26

4.2.1 Project Specific Concerns.............................................................................................26

4.3 Waste Classification and Disposal Options...................................................................27

4.4 PSI Recommendations...................................................................................................28 5 LIMITATIONS..............................................................................................................30 6 REFERENCES ..............................................................................................................31 Figures
Figure 1. Project Location Map ...................................................................................................... 3 Figure 2. Project Vicinity Map ....................................................................................................... 4 Figure 3. Assessor Parcel Map for Jefferson Boulevard and Michigan Boulevard........................ 6 Figure 4. Assessor Parcel Map for North Harbor Boulevard and Reed Avenue ............................ 7 Figure 5. Regional Geology Map.................................................................................................... 9 Figure 6. Sacramento Valley Groundwater Basin ........................................................................ 12 Figure 7. Sacramento River Watershed ........................................................................................ 13 Figure 8. Soil Boring Locations.................................................................................................... 15 Figure 9. Boring Location Exceedances....................................................................................... 22 Figure 10. California Waste Classification and Disposal Options ............................................... 28 Attachment 3
624
Preliminary Site Investigation Federal Project No. HSIPL-5447(048) Highway Safety Improvement Program Cycle 9 - Traffic Signal Improvements WRECO P21038 City of West Sacramento, Yolo County, California
December 2021 ii
Tables
Table 1. Sampling Locations, Intervals, and Analyses................................................................. 16 Table 2. Analytical Results - Lead and pH................................................................................... 19 Table 3. Analytical Results - Metals, PCBs, and TPH ................................................................ 20 Appendices
Preliminary Environmental Study signed February 23, 2021 Laboratory Reports
Attachment 3
625
Preliminary Site Investigation Federal Project No. HSIPL-5447(048) Highway Safety Improvement Program Cycle 9 - Traffic Signal Improvements WRECO P21038 City of West Sacramento, Yolo County, California
December 2021 iii
Executive Summary
The Highway Safety Improvement Program (HSIP) Cycle 9 - Traffic Signal Improvements (Project) is located at six intersections in the City of West Sacramento, Yolo County, California.

The City of West Sacramento (City) Capital Projects and Transportation Department (CPTD) is planning on upgrading signal equipment and installing flashing beacons at six intersections:

Jefferson Boulevard and Sacramento Avenue, Jefferson Boulevard and Michigan Boulevard, Harbor Boulevard and Evergreen Avenue, Harbor Boulevard and Reed Avenue, Harbor Boulevard and Riverpoint Court, and Harbor Boulevard and Duluth Street. The California Department of Transportation (Caltrans) Local Assistance is implementing the safety improvements as part of the HSIP Federal Project No. HSIPL-5447(048).

The purpose of the Preliminary Site Investigation (PSI) is to enhance the multi-modal transportation network by installing redesigned pedestrian and bicycle crossings. Two intersections were identified as having potential impacts from historical uses, and a PSI was performed at Harbor Boulevard and Reed Avenue, and Jefferson Boulevard and Michigan Boulevard.

WRECO performed a PSI at the study area, where installation of flashing beacons will involve soil disturbance. WRECO reviewed PSI study area improvement plans, historical imagery, and regulatory database sites, to evaluate constituents of concern (COC) at the intersections. Potential COCs include the following:
• Potential aerially deposited lead (ADL) due to leaded gasoline automobile exhaust near roadways with exposed soils prior to 1990;
• Potential organochlorine pesticides (OCP) and organophosphorus pesticides (OPP), heavy metals, and petroleum hydrocarbons (diesel and motor oil) from historical agricultural operations;
• Potential petroleum hydrocarbons (gasoline, diesel, and used oil) and volatile organic compounds (VOC), from leaking underground storage tank (LUST) sites within the PSI study area vicinity; and
• Treated wood utility poles along the roadways have pole-mounted transformers that may contain polychlorinated biphenyls (PCB) and semi-volatile organic compounds (SVOC), and treated wood that may have metals (arsenic, chromium, and copper) and polynuclear aromatic hydrocarbons (PAH; creosote and pentachlorophenol), which can impact shallow soil.

This report presents the results of the PSI conducted by WRECO for PSI study area, as part of the proposed PSI study area. The PSI was performed in accordance with the American Society for Testing and Materials (ASTM) International Standard E1903-11, Standard Practice for Environmental Site Assessments: Phase II Environmental Site Assessment Process and Caltrans Local Assistance Procedures Manual and the Standard Environmental Reference (SER), Volume 1: Guidance for Compliance, Chapter 10-Hazardous Materials, Hazardous Waste, and Contamination. The PSI was performed to verify the presence/absence of COCs, to evaluate the available options for soil disposal or reuse, and to provide specific guidance for waste management and worker safety during construction.

Attachment 3
626
Preliminary Site Investigation Federal Project No. HSIPL-5447(048) Highway Safety Improvement Program Cycle 9 - Traffic Signal Improvements WRECO P21038 City of West Sacramento, Yolo County, California
December 2021 iv
On August 11, 2021, WRECO conducted a preliminary site investigation that included sampling four borings; B14E and B15W at the intersection of Jefferson Boulevard and Michigan Boulevard, and B16NE and B17SE at the intersection of Harbor Boulevard and Reed Avenue. A Direct Push Technology (DPT) rig was used to take continuous core soil samples to 5-feet below ground surface ( bgs). DPT uses a hydraulically operated percussion hammer along with vehicle weight to advance the sampling barrel with an acetate liner used to contain the soil sample. The liners were cut into specific depth intervals, 0-1 feet, 1-2 feet, and 2-3 feet bgs, per Caltrans protocol for ADL testing, and analyzed for lead and pH using Environmental Protection Agency (EPA) methods 6020 and 9045C, respectively.

Detectable lead concentrations for sampling depth 0-1 ft ranged from 8.2 to 31 milligrams per kilogram (mg/kg); 1-2 ft ranged from 10 to 27 mg/kg; and 2-3 ft ranged from 6.3 to 96 mg/kg. The pH values ranged from 6.31 to 8.2, which are within the threshold (greater than 6 and less than 9) for State waste criteria reuse or disposal to a Class III unlined landfill.

One sample, B17SE (2-3), had a lead concentration exceeding 10 times the Soluble Threshold Limit Concentration (STLC) regulatory limit of 5 milligrams per liter (mg/L), and was further analyzed using California Waste Extraction Test (CA WET). Laboratory results indicated the STLC lead concentration was 6.2 mg/L, which exceeds the STLC regulatory limit for lead, and was further analyzed using the toxicity characteristic leaching procedure (TCLP). Laboratory results indicated the TCLP concentration was below detection limits, and the soil can be preclassified as California hazardous waste (with respect to lead). Detectable lead concentrations exceeded the Regional Water Quality Control Board (RWQCB) Environmental Screening Levels (ESL) for residential, but not for construction worker or commercial/industrial exposure.

Samples from each boring were homogenized in the laboratory and analyzed for additional COCs that included pesticides (OPP and OCP) (EPA Methods 8141 and 8081), Total Petroleum Hydrocarbons (TPH) as gasoline and diesel (full range), and motor oil (EPA Method 8015); VOCs (EPA Method 8260); PCBs (EPA Method 8082); SVOCs (EPA Method 8270); PAHs (EPA Method 8310); and California Administrative Metals (CAM) 17 Metals (EPA Method 6000/7000).

All concentrations of pesticides (OCP/OPP), TPH (as hydraulic, kerosene, mineral oil, and gasoline), VOCs, PCBs, SVOCs, and PAHs, were below detection limits. One detectable concentration (73 mg/kg) of PCBs (Aroclor 1260) was identified in sample B17SE; this concentration exceeded all the ESLs, and this location should be managed for worker safety.

Concentrations of TPH as diesel ranged from ND (No Detections) to 9.6 mg/kg (B17SE), and TPH as motor oil ranged from ND to 160 mg/kg (B16NE).

Four composite samples had detectable CAM 17 Metals concentrations of arsenic that ranged from

3.5 to 4.6 mg/kg; barium ranged from 90 to 140 mg/kg; chromium ranged from 40 to 73 mg/kg; cobalt ranged from 10 to 15 mg/kg; copper ranged from 14 to 22 mg/kg; lead ranged from 9.5 to 36 mg/kg; nickel ranged from 40 to 88 mg/kg; silver ranged from 1.1 to 3 mg/kg; vanadium ranged from 39 to 66 mg/kg; and zinc ranged from 42 to 83 mg/kg. Two of the samples, B16NE (62 mg/kg) and B17SE (73 mg/kg), exceeded 10 times the STLC for chromium (5 mg/L), and were further analyzed using CA WET. Laboratory results indicated that chromium concentrations for samples B16NE and B17SE were below detection limits and therefore, soil from these samples can be pre-classified as Non-Hazardous. The soil in the areas near B16NE and B17SE (intersection Attachment 3
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of Harbor Boulevard and Reed Avenue) need to be managed for worker safety during construction for chromium.

The arsenic concentrations exceeded the ESLs for residential, commercial/industrial, and construction worker exposure limits. The soil in the areas near all the borings need to be managed for worker safety during construction for arsenic.

The Contractor(s) should prepare a project-specific Lead Compliance Plan (CCR Title 8, §1532.1, “Lead in Construction” standard) to minimize worker exposure to lead-containing soil for areas specified along North Harbor Boulevard and Reed Avenue B17SE (2-3). The plan should include protocols for environmental and personnel monitoring, requirements for personal protective equipment, and other health and safety protocols and procedures for the handling of leadcontaining soil.

Recommendations from the results of the PSI are summarized below.

PSI Recommendations
Material Description Recommended Actions
ADL –
Non-Hazardous
Detectable concentrations of lead were
identified in all shallow soil borings in the
PSI study area.

Soil from borings B14E, B15W, B16NE were below
the regulatory concentration limit of 80 mg/kg and
can be pre-classified as non-hazardous and reused
on-site or disposed of at a Class III landfill,
consistent with CCR Title 22 §66262.11 waste
classification.

ADLCA HazardousSoil boring B17SE (2-3) had a detectable lead concentration of 96 mg/kg that
exceeded 10 times the STLC regulatory
limit (5 mg/L). CA WET concentration
was 6.2 mg/L. TCLP result was below
detection limits. The soil from this boring
can be pre-classified as CA Hazardous.

The shallow soil at B17SE at 2-3 ft bgs, from the
intersection of Reed Avenue and North Harbor
Boulevard, can be pre-classified as CA Hazardous.

Soil from this depth will need to be segregated in a
stockpile and disposed of at a Class I Landfill (per
Section 25117/25141 of the California Health and
Safety Code).

Arsenic –
Non-Hazardous
Detectable arsenic concentrations within
the PSI study are pre-classified as NonHazardous. However, the arsenic concentrations in soil exceeded all the
RWQCB ESLs.

Worker Safety Training will need to include
exposure to arsenic in soil (above all RWQCB ESL
levels).

Dispose of excavated soils as Non-hazardous
waste at Class II unit or Class III landfill
depending on facility acceptance standard.

ChromiumNon-HazardousBorings B16NE (Composite) (comp) and B17SE (Comp) had detectable chromium
concentrations that exceeded 10 times the
STLC regulatory limit (5 mg/L). CA WET
concentrations were below detection
limits. The soil from these borings is preclassified as Non-hazardous.

The shallow soils can be pre-classified as nonhazardous and reused on-site or can be disposed of at a Class III landfill, consistent with CCR Title 22
§66262.11 waste classification.

Worker safety during construction will need to be
managed for chromium.

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Acronyms
ADL aerially deposited lead
AMSL above mean sea level
APN Assessor’s parcel number
APS accessible pedestrian signal
ASTM American Society for Testing and Materials
BCR Benefit Cost Ratio
bgs below ground surface
CA WET California Waste Extraction Test
CAM 17 California Administrative Metals (17)
Caltrans California Department of Transportation
CCR California Code of Regulations
CHP California Highway Patrol
City City of West Sacramento
CPTD Capital Projects and Transportation Department
COCs Constituents of Concern
comp composite
County Yolo County
DPT Direct Push Technology
DTSC Department of Toxic Substances Control
EPA Environmental Protection Agency
EPDO equivalent property damage only
ESLs Environmental Screening Levels
FHWA Federal Highway Administration
ft feet
ISA Initial Site Assessment
LUST leaking underground storage tank
mg/kg milligrams per kilograms
mg/L milligrams per liter
ND not detected
NEPA National Environmental Policy Act
NESHAP National Emission Standards for Hazardous Air Pollutants NOA Naturally Occurring Asbestos
OCP organochlorine pesticides
OPP organophosphorus pesticides
PAH polyaromatic hydrocarbons
PCB polychlorinated biphenyls
PPB pedestrian pushbutton
Project Traffic Signal Improvement Project
PSI Preliminary Site Investigation
RCRA Resource Conservation Recovery Act
REC Recognized Environmental Condition
RWQCB Regional Water Quality Control Board
SSP Standard Special Provisions
SWRCB State Water Resources Control Board
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STLC soluble threshold limit concentration
TCLP toxicity characteristic leaching procedure
TPH total petroleum hydrocarbons
TPHd total petroleum hydrocarbons as diesel
TPHg total petroleum hydrocarbons as gasoline
TPHmo total petroleum hydrocarbons as motor oil
TTLC total threshold limit concentration
UCL upper confidence limit
USGS United States Geological Survey
VOCs volatile organic compounds
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1 INTRODUCTION
This report presents the results of the Preliminary Site Investigation (PSI) conducted by WRECO, on behalf of the City of West Sacramento for the Highway Safety Improvement Program (HSIP) Cycle 9 - Traffic Signal Improvements (Project) in the City of West Sacramento, Yolo County, California. The City of West Sacramento (City) Capital Projects and Transportation Department (CPTD) is planning on upgrading signal equipment and installing flashing beacons at six intersections: Jefferson Boulevard and Sacramento Avenue, Jefferson Boulevard and Michigan Boulevard, North Harbor Boulevard and Evergreen Avenue, North Harbor Boulevard and Reed Avenue, North Harbor Boulevard and Riverpoint Court, and North Harbor Boulevard and Duluth Street.

Two intersections; North Harbor Boulevard and Reed Avenue, and Jefferson Boulevard and Michigan Boulevard, were identified as containing potentially hazardous materials, and were the focus of the PSI. The California Department of Transportation (Caltrans) Local Assistance is implementing the safety improvements as part of the HSIP Federal Project No. HSIPL-5447(048).

The Project Location Map is shown as Figure 1, and the Project Vicinity Map is shown as Figure

2. 1.1 Project Description
Both the overall project area and the two intersections evaluated as part of the PSI study area are located entirely within the City of West Sacramento (City) in the County of Yolo, California. The proposed project would occur entirely within existing intersections’ rights-of-way, and adjacent sidewalk and previously disturbed areas. The proposed project would make minor improvements to 6 intersections within the City. Improvements would require drilling to a depth of 6’6” to support footings for the new poles. The intersections include 1) Jefferson Boulevard & Sacramento Avenue; 2) Jefferson Boulevard & Michigan Boulevard; 3) Harbor Boulevard & Evergreen Avenue; 4) Harbor & Reed Avenue; 5) Harbor Boulevard & Riverpoint Court; and 6) Harbor Boulevard & Duluth Street.

Overview
The HSIP traffic improvements project is intended to enhance the multi-modal transportation network by installing flashing beacon signal ahead signs; replace of 8” signal heads with new 12” heads, new signal mounting brackets; replace pedestrian pushbutton (PPB) with accessible pedestrian signal (APS); video detection radars; replacement of pedestrian signal heads with countdown pedestrian heads; new pole masts, and other improvements. The improvements would enable more efficient conduction of traffic and increase the safety pedestrian and bicycle crossings at these intersection. In part, the improvements are based on a review of city-wide crash data and that would help remedy the safety issues at the locations.

The proposed improvements that would occur within the overall project area, as well as within the PSI study area, would notify drivers of the presence of pedestrians and pedestrian crossings, and improve safety. Project improvements are proposed to occur at the following intersections. 1) Jefferson Boulevard & Sacramento Avenue; 2) Jefferson Boulevard & Michigan Boulevard; 3) Harbor Boulevard & Evergreen Avenue; 4) Harbor & Reed Avenue; 5) Harbor Boulevard & Riverpoint Court; and 6) Harbor Boulevard & Duluth Street.

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Improvements and Construction
The proposed project would require minor removals of existing isolated areas of hardscape and concrete to enable improvements. Minimal removal of the underlying dirt/soil would be needed to install the bases and supports for new signal masts and the majority of project improvements would not require any removals or excavation. The improvements generally consist of replacement of existing aboveground traffic control devices, and replacement and upgrading/installation of or attachment of traffic control devices such as video detection, radars, replacing PPBs with APS devices, installation of street name signs, replacement of signal heads and mounting brackets, and installation of solar powered flashing beacons.

Subsurface removals would be minimal and would be needed to facilitate installation of new signal poles. This would require excavation to a depth of approximately 6’6” within an area needed to install the base for the signal poles. Due to the limited needed excavations and the majority of improvements being aboveground, and replacing/installing new traffic direction, safety, and detection devices, not utility relocations would be required.

Construction of the proposed project would not require complete street closures during construction but may temporarily result in short-term single lane closure to facilitate installation of new sign masts and signal arms. Construction is anticipated to occur over a 12-month period.

Construction is anticipated to begin in July of 2021 and be completed in 2022. The PSI was identified in the Preliminary Environmental Study (PES) signed on June 23, 2021 (Appendix A).

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Figure 1. Project Location Map
Source: WRECO and ESRI, 2021
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Figure 2. Project Vicinity Map
Source: WRECO and ESRI, 2021
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1.2 Current Land Use
As discussed above, the overall PSI study area consists of six intersections. Two of the intersections (Jefferson Boulevard and Michigan Boulevard, and North Harbor Boulevard and Reed Avenue), however, underwent additional testing for the presence of hazardous materials and are the focus of this PSI. The two intersection are located in an urban setting with adjacent properties consisting of commercial businesses and residences. The adjoining properties for the intersections are shown on Figure 3 and Figure 4 with Yolo County Assessor Parcel Numbers (APN) and described below:
• Jefferson Boulevard and Michigan Boulevard – Boring location B-14E is adjacent to APN 008-140-087 (1260 West Capitol Avenue), a commercial shopping center building to the east of the intersection, and B-15W is adjacent to APN 008-140-081 (515 Michigan Boulevard), a medical center building to the northwest of the intersection. • North Harbor Boulevard and Reed Avenue – Boring location B-16NW is adjacent to APN 014-792-006 (2713 Kovr Drive), a television broadcasting station building to the northwest of the intersection; B-17SE is adjacent to APN 014-491-010 (1752 Reed Avenue), a residential house to the northeast of the intersection; APN 014-793-056 (690 Riverpoint Court), a Home Depot commercial building to the southwest of the intersection; and APN 014-481-018 (1757 Reed Avenue), a residential house to the southeast of the intersection.

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Figure 3. Assessor Parcel Map for Jefferson Boulevard and Michigan Boulevard Source: Yolo County Assessor, ESRI, and WRECO, 2021
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Figure 4. Assessor Parcel Map for North Harbor Boulevard and Reed Avenue Source: Yolo County Assessor, ESRI, and WRECO, 2021
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2 PROJECT AREA SETTING
The two intersections evaluated in the PSI is located at the intersections of Jefferson Boulevard at Michigan Boulevard, and North Harbor Boulevard at Reed Avenue in the southeastern portion of Yolo County. The PSI study area adjacent to the intersections is comprised of residential and commercial structures. The roadways where the PSI was conducted are heavily travelled and have a high incidence of collisions.

2.1 Physical Setting

2.1.1 Topography
The average elevation of the PSI study area is relatively flat at approximately 17 feet (ft) above mean sea level (AMSL) as described in the Initial Study/Mitigated Negative Declaration (LSA, 2019). The United States Geological Survey (USGS), West Sacramento, California (7.5-minute) Topographic Quadrangle map was reviewed and indicated that the intersections are moderately sloped to the east towards the Sacramento River (USGS, 2015).

2.1.2 Regional Geology
The City of West Sacramento is in the Great Valley geomorphic province of California, and consists of two valleys, the Sacramento Valley to the north and the San Joaquin Valley in the southern region. Over the past several thousand years, the flooding, erosion and deposition, and movement of the river have left behind a suite of alluvial deposits consisting of sand, silt, clay, and gravel (DWR, 2008). These thick sequences of sediments are derived from marine and nonmarine sources. Up to 25,000 feet of sediment is present in the south-central portion of the Great Valley (Norris and Webb, 1990). The Great Valley sequence vary from Quaternary to Jurassic aged deposits, with the older deposits derived primarily from marine sources and the younger deposits derived primarily from continental sources. The Regional Geology Map is shown as Figure 5.

2.1.3 Local Geology and Soils
The thick sequences of the older and coarser grained alluvium of the former river channel (and related channel deposits) comprises the underlying, deeper strata. These deeper Quaternary and latest Pleistocene deposits (map unit Qal; Helley and Harwood, 1985) of the river are more conductive to groundwater flow and represent ancestral channel and meandering floodplain sediments deposited sub-parallel to the present-day river direction. The distribution of surficial deposits does not necessarily coincide with those in the subsurface because of changes in river position over time (DWR, 2008). The Quaternary stream channel sediments (map unit Qsc; Helley and Harwood, 1985) are deposits of the open, active channel, without permanent vegetation, and are on the left and right banks of the active river channel. The deposits on the left descending bank of the site are point bar and meander scroll deposits. Because the stream channel deposits represent the active depositional-erosional surface, the morphology within the deposits is constantly changing (DWR, 2008).

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Figure 5. Regional Geology Map
Source: WRECO and ESRI, 2021
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2.1.4 Naturally Occurring Asbestos
Naturally Occurring Asbestos (NOA) can occur in serpentine rock and in its parent material, ultramafic rock. These rock types are abundant in the Sierra Nevada foothills. NOA has not been identified in Yolo County, and with the ultramafic rocks being mapped along the eastern side of the Sierra Nevada foothills. The most common forms of naturally occurring fibrous minerals with NOA are chrysotile, actinolite, and tremolite. A review of the “General Location Guide for Ultramafic Rocks in California – Areas Likely to Contain Naturally Occurring Asbestos” (CGS, 2000) indicated that NOA has not been mapped in the vicinity of the PSI study area area.

2.1.5 Groundwater Hydrology
The PSI study areas are in the Sacramento Valley Basin, Yolo Subbasin (5-021.67), as defined by the California Department of Water Resources (DWR, 2006) and shown in Figure 6. The Sacramento River Basin encompasses approximately 27,000 square miles and is bounded by the Sierra Nevada to the east, the Coast Ranges to the west, the Cascade Range and Trinity Mountains to the north, and the Sacramento – San Joaquin Delta (Delta) to the southeast. The Sacramento River Basin is the largest river basin in California, capturing, on average, approximately 22 million acre-feet of annual precipitation. The Sacramento River is approximately 327 miles long, and its major tributaries are the Pit and McCloud Rivers, which join the Sacramento River from the north, and the Feather and American Rivers, which are tributaries from the east. The Sacramento Valley portion of the basin contains the largest population, concentrated in the cities of Sacramento, West Sacramento, Chico, Red Bluff, and Redding. The river is regulated by Shasta Dam and several dams on the major tributaries, including Oroville Dam on the Feather River and Folsom Dam on the American River, which provide power generation, flood control, water supply, recreation, fisheries, and wildlife management.

The Yolo Valley Subbasin is located within the southern portion of the Sacramento Valley Basin.

The subbasin is bounded on the north by the Yolo County line, except where it is broken by the Capay Hills north of Napa Valley. The Yolo Subbasin consists of unconsolidated to semiconsolidated Quaternary and Tertiary sedimentary deposits, including Quaternary alluvium (Q), Pleistocene arkosic alluvium of the Modesto-Riverbank Formations (Qmr), and Pliocene sand, silt, and volcanic rocks of the Tehama Formation (Pt) (DWR, 2006).

Based on a review of GeoTracker groundwater monitoring data near the overall project area and PSI study areas, depth to shallow groundwater ranges from 22.69 to 42.34 ft below ground surface (bgs), as measured by GEI Consultants. (2015). Groundwater flow direction generally ranges based on boring location due to shallow aquifers in the area and slight slope inland towards the Sacramento River (GEI, 2015).

2.1.6 Surface Water Hydrology
The City of West Sacramento is located at the meeting of the Sacramento and American rivers within the Sacramento Valley River Basin (Figure 6). The American River watershed (Figure 7) climate is temperate and is characterized by wet winters and dry summers; 95 percent of the annual precipitation occurs between November and April as both rain and snow at higher elevations as reported in the Environmental Impact Report by ESA (2013). Flows in the Sacramento and Attachment 3
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American rivers are influenced by the volume of surface runoff within the respective watersheds, rainfall, the operation of upstream dams, Sierra Nevada spring snowmelt, local groundwater, and tidal action, which extends to the upper extent of the Delta in the Sacramento River at the I Street Bridge, just downstream of the confluence with the American River (ESA, 2013).

Numerous additional tributary streams and creeks flow from the east and west from the Seirra Mountains. These tributary’s are bound by the Sacramento River on its northern, and eastern borders, and the Sacramento River Deep Water Channel and Yolo Bypass on its western border.

The City of West Sacramento is surrounded by levees, and to the west of the City is an undeveloped riparian area consisting of permeable surfaces.

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Figure 6. Sacramento Valley Groundwater Basin
Source: WRECO and DWR, 2021
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Figure 7. Sacramento River Watershed
Source: EPA and WRECO, 2021
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3 PRELIMINARY SITE INVESTIGATION

3.1 Soil Sampling Methods and Procedures
On August 11, 2021, WRECO conducted a PSI that consisted of collecting shallow soil samples from four borings in areas proposed for signal hardware and flashing beacon installation which will involve soil disturbance. The PSI was performed within the landscaped and/or unpaved areas located at the intersections of Jefferson Boulevard at Michigan Boulevard, and North Harbor Boulevard at Reed Avenue. The PSI was performed to verify the presence/absence of COCs from historical use, evaluate the options for soil disposal or reuse, and to provide guidance for waste management and worker safety during construction.

Prior to field work being performed, the sample locations were marked in white paint, and USA North 811 was contacted to mark utilities near the boring locations. An encroachment permit was not required to work within the City’s right-of-way in West Sacramento. The shallow soil investigation was performed using direct push technology (DPT) methods to take continuous core soil samples at specific locations as shown on Figure 8. DPT uses a hydraulically operated percussion hammer along with vehicle weight to advance the sampling barrel with an acetate liner used to contain the soil sample.

Environmental Control Associates of Sacramento, California used a Geoprobe® 54LT Track Rig to advance four soil borings (B-14 through B-17) within the PSI study area using a 5-foot continuous coring sampler with an acetate liner. Because the diameter of the DPT is only 2.25 inches, minimal drill cuttings were generated, thereby lowering the amount of investigation derived waste produced. Soil samples were contained in the 5-foot acetate liner, and the liner was cut at specific intervals of 0-1, 1-2, and 2-3 ft bgs, capped at each end with a Teflon sheet and plastic lid, labeled, and placed into an ice chest with ice. The chain of custody was completed in the field and relinquished to laboratory staff upon delivery to California Laboratory Services (CLS) Laboratory in Rancho Cordova, California.

Soil encountered during sampling consisted of sandy clay. The borings were backfilled with grout and capped with native soil. All the soil samples collected were analyzed for lead using EPA Method 6010B and pH using EPA Method 9045C. Samples from each boring were homogenized in the laboratory and analyzed for additional COCs that included pesticides (OPP and OCP) (EPA Methods 8141 and 8081), Total Petroleum Hydrocarbons (TPH) as gasoline, diesel, and motor oil (EPA Method 8015), VOCs (EPA Method 8260), PCBs (EPA Method 8082), SVOCs (EPA Method 8270), PAHs (EPA Method 8310), and California Administrative Metals (CAM) 17 Metals (EPA Method 6000/7000). Soil boring locations are shown in Figure 8, and sampling details are summarized in Table 1.

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Figure 8. Soil Boring Locations
Source: WRECO, 2021
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Table 1. Sampling Locations, Intervals, and Analyses
Boring
Number
Location Sampling
Interval
COCsLab Analyses
B14E Jefferson Blvd (Across from
Michigan Blvd)
0-1 ft.; 1-2 ft.;
and 2-3 ft.

Lead (EPA Method 6010B) and pH (EPA Method 9045C)
Composite: (0-3
ft)
CAM 17 (EPA 6000/7000), PCBs (EPA Method 8082), SVOCs (EPA Method 8270C), PAHs (EPA Method 8310), TPHd full range and TPHg (EPA Method 8015), VOCs (EPA Method 8260), OPP (EPA Method 8141), and OCP (EPA Method 8081) B15W Michigan Blvd and Jefferson
Blvd
0-1 ft.; 1-2 ft.;
and 2-3 ft
Lead (EPA Method 6010) and pH (EPA Method 9045)
Composite: (0-3
ft)
CAM 17 (EPA 6000/7000), PCBs (EPA Method 8082), SVOCs (EPA Method 8270C) and PAHs (EPA Method 8310)
B16NE North Harbor Blvd and Reed
Ave
0-1 ft.; 1-2 ft.;
and 2-3 ft
Lead (EPA Method 6010) and pH (EPA Method 9045)
Composite: (0-3
ft)
CAM 17 (EPA 6000/7000), PCBs (EPA Method 8082), SVOCs (EPA Method 8270C), PAHs (EPA Method 8310), TPHd full range and TPHg (EPA Method 8015), and VOCs (EPA Method 8260)
B17SE North Harbor Blvd and Reed
Ave
0-1 ft.; 1-2 ft.;
and 2-3 ft Lead (EPA Method 6010) and pH (EPA Method 9045) Composite: (0-3
ft)
CAM 17 (EPA 6000/7000), PCBs (EPA Method 8082), PAH s (EPA Method 8310), TPHd full range and TPHg (EPA Method 8015), and VOCs (EPA Method 8260) Environmental Protection Agency (EPA) Method for laboratory shown next to analysis; TPHd full range= total petroleum hydrocarbons as diesel, hydraulic, kerosene, and mineral oil; TPHg = total petroleum hydrocarbons as gasoline; OPP = organophosphorus pesticides; OCP = organochlorine pesticides; PCB = polychlorinated biphenyls; California Administrative Manual (CAM) 17 Metals, VOCs = volatile organic compounds, PAH = polycyclic aromatic hydrocarbons, and SVOCs = semi volatile organic compounds.

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3.2 Analytical Results
Twelve soil samples (with sampling depths of 0-1 ft, 1-2 ft, and 2-3 ft), collected from four borings, were analyzed for total lead and pH. Detectable lead concentrations for sampling depth 0-1 ft ranged from 8.2 to 31 milligrams per kilogram (mg/kg); 1-2 ft ranged from 10 to 27 mg/kg; and 2-3 ft ranged from 6.3 to 96 mg/kg. The pH values ranged from 6.31 to 8.2, which are within the threshold (greater than 6 and less than 9) for State waste criteria reuse or disposal to a Class III unlined landfill (RCDWM, 2019).

One sample, B17SE (2-3), had a lead concentration exceeding the 10 times Soluble Threshold Limit Concentration (STLC) regulatory limit of 5 milligrams per liter (mg/L), and was further analyzed for the California Waste Extraction Test (CA WET). Laboratory results indicated the STLC lead concentration was 6.2 mg/L, which exceeds the STLC regulatory limit for lead, and was further analyzed using the toxicity characteristic leaching procedure (TCLP). Laboratory results indicated the TCLP concentration was below detection limits, and the soil can be preclassified as California hazardous waste (with respect to lead). Analytical results for the lead and pH soil screening are summarized in Table 2.

Four composite samples had detectable CAM 17 Metals concentrations of arsenic that ranged from

3. Concentrations of lead and chromium exceedances in soil are shown in Figure 9.

Samples from each boring were homogenized in the laboratory and analyzed for additional COCs including pesticides (OPP and OCP), PCBs, VOCs, and SVOCs, TPHd (full range) and TPHg. All concentrations of pesticides (OCP/OPP), TPH (as hydraulic, kerosene, mineral oil, and gasoline), VOCs, SVOCs, and PAHs, were below detection limits. One detectable concentration (73 mg/kg) of PCBs (Aroclor 1260) was identified in sample B17SE. Concentrations of TPH as diesel ranged from ND to 9.6 mg/kg (B17SE), and TPH as motor oil ranged from ND to 160 mg/kg (B16NE).

Detectable analytical results for the composite samples are summarized in Laboratory Reports are provided in Appendix B.

WRECO reviewed the soil analytical results for the listed COCs and screened them against the San Francisco Bay Regional Water Quality Control Board (RWQCB) Environmental Screening Levels (ESL) (2019). These screening criteria take into consideration direct exposure to human health risk levels and shallow soil exposure to residential, commercial/industrial, and construction worker (any land use/any depth soil exposure). The ESLs are not criteria to be used for determining how or where to dispose of waste soils, they are instead used for human exposure levels and will determine worker safety requirements during project construction.

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All the metal concentrations (including lead) were below the ESLs, except for arsenic concentrations which exceeded residential, commercial/industrial, and construction worker ESLs.

Therefore, soil containing arsenic in the areas of disturbance should be managed for worker safety during construction. The PCB concentration exceeded the ESLs for Aroclor 1260 with respect to residential, commercial/industrial, and construction worker at B17SE. No other analyte exceeded RWQCB ESLs.

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Table 2. Analytical Results - Lead and pH
Boring/
Sample ID pH
Lead
Results
(mg/kg)
CA WET
(mg/L)
TCLP
(mg/L)
Environmental Screening Levels
Hazardous Waste Criteria
Waste Classification Res. (mg/kg) Comm/Ind
(mg/kg)
Const Worker
(mg/kg)
STLC
TCLP
(mg/L)
TTLC
(mg/kg)
B14E (0-1)
B14E (1-2)
B14E (2-3)

6.54 11 -- -- 80 320 160 5.0 1,000
Non-Hazardous

7.21 10 -- -- 80 320 160 5.0 1,000

6.67 14 -- -- 80 320 160 5.0 1,000
B15W (0-1)
B15W (1-2)
B15W (2-3)

7.10 8.2 -- -- 80 320 160 5.0 1,000

7.44 11 -- -- 80 320 160 5.0 1,000

6.90 6.3 -- -- 80 320 160 5.0 1,000
B16NE (0-1)
B16NE (1-2)
B16NE (2-3)

6.65 31 -- -- 80 320 160 5.0 1,000

7.11 27 -- -- 80 320 160 5.0 1,000

6.31 21 ---- 80 320 160 5.0 1,000
B17SE (0-1)
B17SE (1-2)
B17SE (2-3)

7.76 13 ---- 80 320 160 5.0 1,000

8.20 17 ---- 80 320 160 5.0 1,000

7.67 96 6.2 ND 80 320 160 5.0 1,000 California
Hazardous
Note: STLC = Soluble Threshold Limit Concentration; TTLC = Total Threshold Limit Concentration; TCLP = Toxicity Characteristic Leaching Procedure; mg/kg = milligram per kilogram. mg/L = milligram per liter; -- = not analyzed; Lead analyzed using EPA 6010B; pH analyzed using EPA 9045C. Res. = residential; Comm/Ind = commercial and industry; Const worker = construction worker.

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Table 3. Analytical Results - Metals, PCBs, and TPH
Boring/
Comp Sample
Analysis Results
(mg/Kg)

STLC CA
WET
(mg/L)
ESL1(Table S-1) Hazardous Waste Criteria Waste Classification Residential
(mg/kg)
Comm/Ind
(mg/kg)
Const.

Worker
(mg/kg)
TTLC
(mg/Kg)
STLC
(mg/L)
B14E (0-3)
Arsenic 4.5 -- 0.26 3.6 0.98 500 5
Non-Hazardous
Barium 90 -- 15,000 220,000 3,300 10,000 100
Chromium 40 -- 230 3,500 400 2,500 5
Cobalt 11 -- 23 350 28 8,000 80
Copper 14 -- 31 47,000 14,000 2,500 25
Lead 13 -- 80 320 160 5.0 1,000
Nickel 41 -- 820 11,000 86 2,000 20
Silver 1.1 -- 390 5800 1800 500 5
Vanadium 39 -- 390 5,800 300 2,400 24
Zinc 40 -- 23,000 350,000 110,000 5,000 250
B15W (0-3)
Arsenic 4.6 -- 0.26 3.6 0.98 500 5
Barium 98 -- 15,000 220,000 3,300 10,000 100
Chromium 43 -- 230 3,500 400 2,500 5
Cobalt 10 -- 23 350 28 8,000 80
Copper 16 -- 31 47,000 14,000 2,500 25
Lead 9.5 -- 80 320 160 5.0 1,000
Nickel 40 -- 820 11,000 86 2,000 20
Silver 2.0 -- 390 5800 1800 500 5
Vanadium 48 -- 390 5,800 300 2,400 24
Zinc 42 -- 23,000 350,000 110,000 5,000 250
B16NE (0-3)
Arsenic 3.5 -- 0.26 3.6 0.98 500 5
Barium 120 -- 15,000 220,000 3,300 10,000 100
Chromium 62 ND 230 3,500 400 2,500 5
Cobalt 13 -- 23 350 28 8,000 80
Copper 19 -- 31 47,000 14,000 2,500 25
Lead 25 -- 80 320 160 5.0 1,000
Nickel 68 -- 820 11,000 86 2,000 20
Silver 2.7 -- 390 5800 1800 500 5
Vanadium 60 -- 390 5,800 300 2,400 24
Zinc 68 -- 23,000 350,000 110,000 5,000 250
TPH-mo 160 -- 12,000 180,000 54,000 -- --
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Boring/
Comp Sample
Analysis Results
(mg/Kg)

STLC CA
WET
(mg/L)
ESL1(Table S-1) Hazardous Waste Criteria Waste Classification Residential
(mg/kg)
Comm/Ind
(mg/kg)
Const.

Worker
(mg/kg)
TTLC
(mg/Kg)
STLC
(mg/L)
B17SE (0-3)
Arsenic 4.0 -- 0.26 3.6 0.98 500 5
Non-Hazardous
Barium 140 -- 15,000 220,000 3,300 10,000 100
Chromium 73 ND 230 3,500 400 2,500 5
Cobalt 15 -- 23 350 28 8,000 80
Copper 22 -- 31 47,000 14,000 2,500 25
Lead 36 -- 80 320 160 5.0 1,000
Nickel 88 -- 820 11,000 86 2,000 20
Silver 3.0 -- 390 5800 1800 500 5
Vanadium 66 -- 390 5,800 300 2,400 24
Zinc 83 -- 23,000 350,000 110,000 5,000 250
TPH - d 9.6 -- 260 1,200 1,100 -- --
TPH – mo 83 -- 12,000 180,000 54,000 -- --
PCB -Aroclor
1260 73 -- 0.23 0.94 5.5 50 5
1 = ESLs listed are the lowest cancer risk or non-cancer hazard level; PCBs (EPA 8082A); TPH (EPA 8015M); CAM 17 Metals (EPA 6000/7000); ND – below detection limits; -- no data; TCLP = Toxicity Characteristic Leaching Procedure; STLC = Soluble Threshold Limit Concentration Attachment 3
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Figure 9. Boring Location Exceedances
Source: WRECO, 2021
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3.3 Hazardous Waste Determination Criteria
Due to the historical use of lead in gasoline formulations, lead contamination is common in surface soils along roadways. ADL-impacted soils are regulated at both the federal and State levels, because they can be classified as federal hazardous waste, or they are subject to State regulations when not classified as federal hazardous waste, and they may represent a health risk to construction workers that will be excavating shallow soil for the project area intersection improvements.

Regulatory criteria to classify a waste as “California Hazardous” for handling and disposal purposes are contained in the California Code of Regulations (CCR), Title 22, Division 4.5, Chapter 11, Article 3, § 66261.24.

For solid wastes (soil) containing lead, the waste is classified as California Hazardous waste when:
• Total lead concentrations equal to or exceeding 1,000 mg/kg, the TTLC, are classified as hazardous waste.
• Soluble lead concentrations (assessed using CA WET procedures) equal to or exceeding

5.0 mg/L, the STLC, are classified as California Hazardous under California law. • California hazardous materials must be transported under a hazardous waste manifest and disposed of at an appropriately permitted facility.
• Wastes with lead concentrations less than both the TTLC and the STLC are Nonhazardous waste and may be disposed of at a Class III facility, provided that site-specific disposal facility requirements are satisfied.

A waste may have the potential of exceeding the STLC when the waste’s total metal content (as TTLC) is greater than or equal to 10 times the respective STLC value, since the WET uses a 1:10 dilution ratio. Hence, when a total metal is detected at a concentration greater than or equal to 10 times the respective STLC, and assuming that 100 percent of the total metals are soluble, soluble metal analysis is required.

Criteria to classify a waste as “Resource, Conservation, and Recovery Act (RCRA) Hazardous” are contained in Chapter 40 of the Code of Federal Regulations (40 CFR), § 261.

The above regulatory criteria are based on chemical concentrations. Wastes may also be classified as hazardous based on other criteria such as ignitability and corrosivity; however, for the purposes of this investigation, toxicity (i.e., representative lead concentrations) is the primary factor considered for waste classification since waste generated during the construction activities would not likely warrant testing for ignitability or corrosivity. Waste that is classified as either Californiahazardous or RCRA-hazardous waste requires management as a hazardous waste.

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3.4 Results and Findings
The PSI was performed to verify the presence/absence of potential COCs, to evaluate the available options for soil disposal or reuse during construction, and to provide specific guidance for waste management and worker safety during construction.
• On August 11, 2021, four (4) shallow soil borings were sampled from DPT borings (B-14 to B-17) at depth intervals of 0-1, 1-2, 2-3 ft bgs (12 soil samples collected). • All 12 soil samples collected were analyzed for lead and pH. Detectable lead concentrations for sampling depth 0-1 ft ranged from 8.2 to 31 mg/kg; 1-2 ft ranged from 10 to 27 mg/kg; and 2-3 ft ranged from 6.3 to 96 mg/kg. The pH ranged from 6.31 to 8.2, which is within the threshold (greater than 6 and less than 9) for State waste criteria reuse or disposal to a Class III unlined landfill.
• One sample, B17SE (2-3), had a lead concentration exceeding 10 times the STLC regulatory limit of 5 mg/L, and was further analyzed using CA WET. • Laboratory results indicated the STLC lead concentration was 6.2 mg/L, which exceeds the STLC regulatory limit, and was further analyzed using the TCLP. • Laboratory results indicated the TCLP concentration was below detection limits, and the soil can be pre-classified as California hazardous waste (with respect to lead). • Four composite samples had detectable CAM 17 Metals concentrations of arsenic that ranged from 3.5 to 4.6 mg/kg; barium ranged from 90 to 140 mg/kg; chromium ranged from 40 to 73 mg/kg; cobalt ranged from 10 to 15 mg/kg; copper ranged from 14 to 22 mg/kg; lead ranged from 9.5 to 36 mg/kg; nickel ranged from 40 to 88 mg/kg; silver ranged from 1.1 to 3 mg/kg; vanadium ranged from 39 to 66 mg/kg; and zinc ranged from 42 to 83 mg/kg.
• Two of the samples, B16NE (62 mg/kg) and B17SE (73 mg/kg), exceeded 10 times the STLC for chromium (5 mg/L), and were further analyzed using CA WET. • Laboratory results indicated that chromium concentrations for samples B16NE and B17SE were below detection limits; therefore, soil from these samples can be pre-classified as Non-hazardous waste (with respect to chromium).
• Samples from each boring were homogenized in the laboratory and analyzed for additional COCs. All concentrations of pesticides (OCP/OPP), TPH (as hydraulic, kerosene, mineral oil, and gasoline), VOCs, SVOCs, and PAHs, were below detection limits. • One detectable PCB concentration (73 mg/kg) of Aroclor 1260 was identified in sample B17SE. Concentrations of TPH as diesel ranged from ND to 9.6 mg/kg (B17SE), and TPH as motor oil ranged from ND to 160 mg/kg (B16NE).
• Detectable lead concentrations exceeded the RWQCB ESLs for residential, but did not exceed construction worker and commercial/industrial exposure. Chromium concentrations did not exceed the ESLs. Arsenic concentrations exceeded all the ESLs; Soil in the intersections sampled should be managed for worker safety during construction for lead, chromium, and arsenic.

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4 CONCLUSIONS AND RECOMMENDATIONS
WRECO analyzed soil for COCs and screened the results against RWQCB ESLs that take into consideration risks of direct and indirect exposure to construction workers (as well as residential and commercial/industrial uses). Under most circumstances, the presence of a chemical in soil, soil gas, or groundwater at concentrations below the corresponding ESL can be assumed to not pose a significant threat to human health, water resources, or the environment.

Laboratory results indicate that shallow soil may contain levels of arsenic, chromium, and lead.

Worker safety measures should follow Cal/OSHA regulations to limit exposure and hazards to construction workers during soil disturbance for the roadway improvements. The ESLs are criteria that are used for determining human exposure limits and will be used for worker safety requirements during project construction.

4.1.1 Arsenic in Soil
The PSI study area is contained within a former agricultural region of Yolo County, and the use of phosphate and micronutrient fertilizers contain potentially harmful trace elements such as arsenic, chromium, and lead. Arsenic occurs naturally in soil and minerals and may enter the air, water, and land from wind-blown dust and may get into water from runoff and leaching. Sample results indicated arsenic concentrations ranged from 3.5 to 4.6 mg/kg, which exceed all RWQCB ESLs.

Background arsenic levels in California tend to be higher than the RWQCB ESLs used for evaluation of a soil’s exposure hazard, and various studies have shown much higher levels in soil.

United States Geological Survey provided a regional estimate for arsenic of 18 mg/kg (USGS, 1984). Lawrence Berkeley National Laboratoryprovided upper estimates of background levels (based on statistical analysis) of arsenic and cobalt (LBNL, 2009). The LBNL study indicated concentrations of arsenic and cobalt at 24 mg/kg and 25 mg/kg, respectively. Due to the high capacity of clay and organic matter to adsorb metallic ions, arsenic concentrations tend to be highest in soils that contain high percentages of clay and organic material (e.g., clay and clay loamy soils, organic light [or rich] soils) (NAVFAC, 2002). Therefore, it is expected that finergrained depositional environments within the Western Sacramento area would likely have higher natural concentrations of arsenic relative to sandy or gravelly soils. Soil containing arsenic, in the PSI study area, needs to be managed for worker safety during construction.

4.1.2 Chromium in Soil
Two samples, from borings B16NE and B17SE (composite), had chromium concentrations that exceeded 10 times the STLC and were analyzed using CA WET, which yielded non-detectable concentrations below the STLC regulatory limit. Therefore, the soil is pre-classified as NonHazardous. Total chromium concentrations in U.S. soils range from 1 to 2,000 mg/kg, with a mean of 37.0 mg/kg (USGS, 1984). Human exposure to chromium occurs from both natural and anthropogenic sources. Natural chromium sources come from the Earth's crust with continental dust present in the environment, primarily as chromium (III). Chromium is released into the atmosphere by anthropogenic sources, including industrial, commercial, and residential fuel combustion, via the combustion of natural gas, oil, and coal, and metal industries including chrome plating and steel in the hexavalent form, chromium (VI). Chromium (VI) in soil can be rapidly Attachment 3
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reduced to chromium (III) by organic matter. Soil containing chromium, in the Project corridor, needs to be managed for worker safety during construction.

4.1.3 Lead in Soil
All the lead concentrations in soil were below the regulatory limit of 80 mg/kg. One location at B17SE (2-3) exceeded the STLC regulatory limit and was pre-classified as CA Hazardous. The concentrations in B17SE (2-3) exceeded the residential ESLs (80 mg/kg), however, none of the detectable lead concentrations exceeded the construction worker or commercial/industrial exposure ESLs. Soil containing lead, in the PSI study area, needs to be managed for worker safety during construction.

4.2 Worker Safety
All on-site personnel shall comply with standards found in the Construction Safety Orders and General Industry Safety Orders as defined by Cal/OSHA. The following federal and state regulations govern the protection of worker safety at potential hazardous material sites:
• OSHA Hazardous Waste Operations and Emergency Response regulations (29 CFR 1910.120)
• OSHA Worker education and training (Hazard Communication Standard) 29 CFR 1910.120, 1915.120, 1917.28, 1918.90, and 1926.59
• General Industry the Occupational Safety and Health Administration (OSHA) 29 CFR 1910; 1910.1018 (Inorganic Arsenic), 1910.1025 (Lead), 1910 Subpart Z (Toxic and hazardous substances), and 1910.1000 (Air contaminants), and 1926 Subpart D (Occupational health and environmental controls)
• Construction Industry OSHA 29 CFR 1926; 1926.62 (Lead), 1926 Subpart Z (Toxic and hazardous substances), 1926.1118 (Inorganic Arsenic)
• Hazardous Waste Control Act (California Health and Safety Code, Section 25100 et seq.), CCR Title 26
• HAZWOPER (§ 5192) - Title 8 CCR Division 1, Chapter 4, Subchapter 7, Group 16, Article 109 (Appendices)
• Lead in Construction - 8 CCR 1532.1
• General Industry Safety Orders - 8 CCR 5214 (Inorganic Arsenic) • Environmental Health Standards for Management of Hazardous Waste - 22 CCR Division

4.5 • Lead Standard for the Construction Industry - 29 CFR 1926.62 All on-site personnel shall comply with standards found in the Construction Safety Orders and General Industry Safety Orders as defined by Cal/OSHA.

4.2.1 Project Specific Concerns
Arsenic - Arsenic is a naturally occurring element that is often detected in soil at concentrations that equal or exceed regulatory screening levels for both residential and industrial soil. The DTSC is aware of the ubiquitous nature of arsenic in California soil and generally does not consider concentrations of arsenic within the range of naturally occurring background levels to be a concern.

Soil cleanup guidelines for arsenic vary widely in the U.S., ranging from 0.039 to 40 mg/ kg. The Attachment 3
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project site had arsenic values ranging from 2.0 mg/kg to 6.0 mg/kg. The arsenic concentrations were below the STLC regulatory limit, and the soil is pre-classified as non-hazardous for reuse at the project site or disposal at a Class III Landfill, consistent with CCR Title 22 §66262.11 waste classification in regard to the arsenic levels. Arsenic concentrations in soil will need to be managed during construction for worker safety.

Chromium - Chromium is a naturally occurring element in rocks, animals, plants, soil, and volcanic dust and gases. Chromium occurs in primarily in two valence states, trivalent chromium (Cr III) and hexavalent chromium (Cr VI). Exposure may occur from natural or industrial sources of chromium. Cr III is recognized as a trace element that is essential to both humans and animals.

Cr VI compounds are toxic and inhaled Cr VI is recognized as a human carcinogen. The body can detoxify some amount of Cr VI to Cr III. Chromium compounds in soil can be inhaled and result in airway irritation, airway obstruction, and lung, nasal, or sinus cancer. The chromium concentrations were below the STLC regulatory limit and the soil is pre-classified as Nonhazardous. Chromium concentrations in soil will need to be managed during construction for worker safety.

Aerially deposited lead - ADL is typically found within the top 3 feet of soil in unpaved areas along roadways. Lead concentrations were primarily below the regulatory limit (80 mg/kg) and the soil is pre-classified as Non-hazardous for reuse at the Project site or disposal at a Class III Landfill. One soil sample, B17SE (2-3), had lead concentrations exceeding the STLC regulatory limit and is pre-classified as CA Hazardous. Lead concentrations in shallow soil will need to be managed during construction for worker safety as the following:
• Caltrans Standard Special Provisions (SSP) 7-1.02K(6)(j)(iii) (DOCX) (10/19/2018) - Earth Material Containing Lead - Requires a lead compliance plan for soil disturbance when lead concentrations are non-hazardous.
• Caltrans Standard Specification 14-11.08 Regulated Material Containing ADL (2018). • Caltrans Standard Specification 14-11.09 Minimal Disturbance of Regulated Material Containing ADL (2018).

4.3 Waste Classification and Disposal Options
Waste classification and disposal for Project sites that generate soil containing COCs that exceed regulatory requirements for soil reuse, should follow the decision options shown in Figure 10.

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Figure 10. California Waste Classification and Disposal Options Source: California EPA
The Contractor hired for the Project construction will need to prepare a Project-specific Lead Compliance Plan (CCR Title 8, §1532.1, the “Lead in Construction” standard) to minimize worker exposure to lead-containing soil. The plan should include protocols for environmental and personnel monitoring, requirements for personal protective equipment, and other health and safety protocols and procedures for the handling of lead-containing soil.

4.4 PSI Recommendations
Based on the results of the PSI, WRECO has summarized the following recommendations in the table below.

RECOMMENDATIONS SUMMARY
Material Description Recommended Actions
ADL - Non-Hazardous Detectable concentrations of lead were identified in all shallow soil borings in
the PSI area.

Soil from borings B14E, B15W,
B16NE were below the regulatory
concentration limit of 80 mg/kg and
can be pre-classified as non-hazardous
and reused on-site or disposed of at a
Class III landfill, consistent with CCR
Title 22 §66262.11 waste
classification.

ADL- CA Hazardous Soil boring B17SE (2-3) had a
detectable lead concentration of 96
mg/kg that exceeded 10 times the STLC
regulatory limit (5 mg/L). CA WET
concentration was 6.2 mg/L. TCLP
result was below detection limits.

The soil can be pre-classified as CA
hazardous (for lead).

The shallow soil at B17SE at 2-3 ft
bgs, from the intersection of Reed
Avenue and North Harbor Boulevard,
can be pre-classified as California
Hazardous.

Soil from this depth will need to be
segregated in a stockpile and disposed
of at a Class I Landfill (per Section
25117/25141 of the California Health
and Safety Code).

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Material Description Recommended Actions
Arsenic Detectable arsenic concentrations in
shallow soil within the Project
footprint, did not exceed 10 times the
STLC regulatory limit (50 mg/L) and is
pre-classified as Non-Hazardous.

However, the arsenic concentrations in
soil exceeded all the RWQCB ESLs.

Worker Safety Training will need to
include exposure to arsenic in soil
(above RWQCB ESL levels).

Dispose of excavated soils as Nonhazardous waste at Class II unit or Class III landfill depending on facility
acceptance standard.

Chromium Non-Hazardous Borings B16NE (Comp) and B17SE
(Comp) had detectable chromium
concentrations that exceeded 10 times
the STLC regulatory limit (5 mg/L). CA
WET concentrations were below
detection limits. The soil at these
borings are pre-classified as Nonhazardous (for chromium).

The shallow soils can be pre-classified
as non-hazardous and reused on-site
or can be disposed of at a Class III
landfill, consistent with CCR Title 22
§66262.11 waste classification.

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5 LIMITATIONS
The scope of a PSI includes verification of potential COCs by collecting and analyzing shallow soil samples from areas that will incur soil disturbance. The potential exists for unknown contamination to be revealed during project construction. The PSI for the Project intersections located in the City of West Sacramento, California, was performed in general accordance with the ASTM E1903-11 Standard.

All readily available materials pertaining to the Project corridor were reviewed prior to performing the investigation and used to help prepare this report. This assessment is not a full-scale environmental site investigation to prove that the Project intersections are environmentally devoid of hazardous or toxic materials. Samples were collected in specific locations for the intersection improvements to provide a screening of concentrations of potential COCs.

This PSI consists of professional opinions and recommendations made in accordance with generally accepted environmental principles and practices. The conclusions are based upon an evaluation of the information gathered and analytical data from the soil samples collected from the Project intersections. This PSI does not provide any implied or expressed guarantees regarding the characteristics or environmental conditions at all the Project intersections.

The findings and conclusions in this report are based solely on the limited scope of the PSI, and it is not warranted that the other Project intersections do not include hazardous materials or petroleum hydrocarbon releases in areas that were not tested or discussed in this report.

This PSI is not intended to identify ALL hazards or unsafe conditions, or to imply that others do not exist. This soil sampling and testing investigation was planned and implemented based on a mutually agreed scope of work and WRECO’s experience in performing this type of assessment.

WRECO has performed this investigation in a professional manner using the degree of skill and care exercised for similar projects under similar conditions, by reputable and competent environmental consultants. WRECO shall not be responsible for conditions or consequences arising from relevant facts that were not identified or disclosed at the time that this investigation was conducted.

WRECO further states that no warranties, expressed or implied are made regarding the quality, fitness, or results to be achieved because of this report or impacted by information not properly disclosed to WRECO at the time of this report. In addition, no responsibility is assumed for the control or correction of conditions or practices existing at the Project intersections.

Verification of material quantities is the responsibility of the contractor that will be performing construction activities at the Project area. It is the responsibility of the construction Contractor to determine the appropriate waste management and disposal actions for shallow soil within the Project area. Hazardous materials must be handled in strict accordance with the various federal, state, and local regulations. Failure to abide by these regulations can result in penalties to both the Contractor as well as the City of West Sacramento.

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6 REFERENCES
American Society for Testing and Materials (ASTM) International. 2011. Standard Practice for Environmental Site Assessments: Phase II Environmental Site Assessment Process; ASTM E1903-11.

California Department of Conservation. 2000. A General Location Guide for Ultramafic Rocks in California - Areas More Likely to Contain Naturally Occurring Asbestos. Division of Mines and Geology. < https://ww2.arb.ca.gov/sites/default/files/classic//toxics/asbestos/ofr_2000- 019.pdf > (Last accessed: August 19, 2021)
California Department of Transportation (Caltrans). 2018. Standard Special Provisions online:
<https://dot.ca.gov/programs/environmental-analysis/hazardous-waste/special-provisions> (Last accessed: September 2, 2021).

Caltrans. 2011. Standard Environmental Reference, Volume 1: Guidance for Compliance, Chapter 10 - Hazardous Materials, Hazardous Waste, and Contamination.

California Department of Water Resources (DWR). 2006. Bulletin 118. Sacramento River Hydrologic Region. Sacramento Valley Groundwater Basin. Yolo Subbasin. < https://water.ca.gov/programs/groundwater-management/bulletin-118> (Last accessed:

August 19, 2021).

California Environmental Protection Agency (EPA), Department of Toxic Substances Control (DTSC). 2016. Soil Management Agreement for Aerially Deposited Lead-Contaminated Soils with California Department of Transportation (Caltrans). Docket No. ESPO-SMA 15/16-001.

June 29.

California Geological Survey (CGS). 2000. General Location Guide for Ultramafic Rocks in California – Areas Likely to Contain Naturally Occurring Asbestos (California Geological Survey Open-file Report 2000-19, 2000).

Department of Toxic Substances Control (DTSC). 2021. Online: < https://dtsc.ca.gov/toxics-inproducts/treated-wood-waste/> (Last accessed: August 19, 2021) Department of Water Resources (DWR). 2008. Sacramento Maintenance Yard Underground Storage Tank Investigation Phase 2 Site Characterization Report. April. <https://documents.geotracker.waterboards.ca.gov/esi/uploads/geo_report/1637765467/T0 611300022.PDF> (Last accessed: September 2, 2021).

Environmental Protection Agency. 2021. <https://www.epa.gov/sfbay-delta/feather-andsacramento-rivers-watersheds> ESA. 2013. Hydrology and Water Quality. Environmental Impact Report. Online:
<https://www.cityofsacramento.org/-
/media/Corporate/Files/CDD/Planning/Environmental-ImpactAttachment 3 661
Preliminary Site Investigation Federal Project No. HSIPL-5447(048) Highway Safety Improvement Program Cycle 9 - Traffic Signal Improvements WRECO P21038 City of West Sacramento, Yolo County, California
December 2021 32
Reports/Arena_ESC/47HydrologyandWaterQuality.pdf?la=en> (Last accessed: August 18, 2021).

GEI Consultants. 2016. Groundwater Monitoring Report Fourth Quarter 2015 Department of Water Resources West Sacramento (Byrte) Maintenance Yard. <https://documents.geotracker.waterboards.ca.gov/esi/uploads/geo_report/9192900240/T06113 00022.PDF>
Helley, E.J., and Harwood, D.S., 1985, Geologic Map of Late Cenozoic Deposits of the Sacramento Valley and Northern Sierran Foothills, California, USGS Map File MF-1790, scale 1:62,500.

Lawrence Berkeley National Laboratory (LBNL) Environmental Restoration Program. 2009.

Analysis of Background Distributions of Metals in the Soil at Lawrence Berkeley National Laboratory. Prepared by David Diamond, Davis Baskin, Dennis Brown, Loren Lund, Julie Najita, and Iraj Javandel. June 2002 - updated April 2009.

LSA Associates Inc. 2019. West Capitol Avenue Road Rehabilitation Project. West Sacramento, California. Federal Project No: HSIP-5447 (042) state Clearinghouse Number: 201902910.

Initial Study/Mitigated Negative Declaration. (Last Accessed: August 19, 2021) Norris, R. M., and Webb, R. W. 1990. Geology of California (2nd edition). New York, NY: John Wiley & Sons, Inc.

Riverside County Department of Waste Management. 2019. Soil Waste Acceptance Program. <http://www.rcwaste.org/Portals/0/Files/WasteGuide/SWAP.pdf> (Last Accessed:

September 1, 2021)
San Francisco Bay Regional Water Quality Control Board (SFBRWQCB). 2016. User’s Guide:

Derivation and Application of Environmental Screening Levels. Interim Final.

SFBRWQCB. 2019. Environmental Screening Levels.
<https://www.waterboards.ca.gov/sanfranciscobay/water_issues/programs/ESL/new/ESL_Su mmary_Tables_24Jan19_Rev1.pdf> (Last accessed: August 18, 2021).

Topographic -Map.com. 2021. Online: West Sacramento topographic map, elevation, relief. <https://en-gb.topographic-map.com/maps/ee99/West-Sacramento/> (Last Accessed:

September 1, 2021).

United States Geological Survey (USGS). 1984. Element Concentrations in Soils and Other Surficial Materials, Conterminous United States, U.S. Geological Survey Professional Paper 1270. Prepared by Shacklette, H.T., and J.G. Boerngen.

Attachment 3
662
Preliminary Site Investigation Federal Project No. HSIPL-5447(048) Highway Safety Improvement Program Cycle 9 - Traffic Signal Improvements WRECO P21038 City of West Sacramento, Yolo County, California
December 2021
Preliminary Environmental Study signed February
23, 2021
Attachment 3
663
Chapter 6 Local Assistance Procedures Manual
Environmental Procedures

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OB 13-02 March 14, 2013
EXHIBIT 6-A PRELIMINARY ENVIRONMENTAL STUDY (PES)
HSIP Cycle 9 Safety Projects
Federal Project No.: HISPL 048 Final Design: April 2021 (Federal Program Prefix-Project No., Agreement No.) (Expected Start Date) To: Bomasur Banzon From: City of West Sacramento
(District Local Assistance Engineer) (Local Agency)
District 3 Alee Moua – (916) 947-0521
(District) (Project Manager’s Name and Telephone No.)
703 B Street,
Marysville, CA 95901
1110 W. Capitol Avenue
West Sacramento, CA. 95691
(Address) (Address)
[email protected] [email protected] (Email Address) (Email Address)
Is this Project “ON” the Yes
State Highway System? No
IF YES, STOP HERE and contact the District Local Assistance Engineer regarding the completion of other environmental documentation.

Federal State Transportation Improvement Program
(FSTIP) http://www.dot.ca.gov/hq/transprog/fedpgm.htm:
http://www.dot.ca.gov/hq/transprog/oftmp.htm
July 1, 2019
Administrative
Modification #6
September 15, 2016 (Pages No._31 attached to this
form)
Programming
for FSTIP: Preliminary Engineering Right of Way Construction 2018/2020 $ 63,000 -- $ -- 2021/2022 $ 696,400
(Fiscal Year) (Dollars) (Fiscal Year) (Dollars) (Fiscal Year) (Dollars) Project Description as Shown in RTP and FSTIP:

Various signalized intersections. Improve signal hardware and install flashing beacons.

Attachment 3
664
Exhibit 6-A Local Assistance Procedures Manual
Preliminary Environmental Study (PES) Form

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March 14, 2013 OB 13-02
Detailed Project Description:(Describe the following, as applicable: purpose and need, project location and limits, required right of way acquisition, proposed facilities, staging areas, disposal and borrow sites, construction activities, and construction access.)
The West Sacramento Signals Improvement Project (proposed project) is located in the city of West Sacramento and is shown in Figure 1 Regional Location Map. The proposed project would make minor improvements at 6 intersections shown on Figure 2 Project Location Map. The proposed project includes the installation of traffic signal improvements that have been designed to maximize intersection operation efficiency, improve pedestrian and vehicle safety by reducing pedestrian and vehicle conflicts with the modifications including upgrading signal hardware and installing flashing beacons. The signal improvements would occur and be installed within existing right-of-way and would not result in the disturbance of previously undisturbed areas. Installation of new signal masts would not require new construction but would require drilling of holes up to approximately six feet in depth to install support for the new metal masts.

The specific improvements and site footprints are shown on the following figures that also list proposed project sites:

Figure 3: Intersection 1 – Harbor Boulevard and Reed Avenue; Figure 4: Intersection 2 – Harbor Boulevard and Riverpoint Court; Figure 5: Intersection 3 – Harbor Boulevard and Duluth Street; Figure 6: Intersection 4 – Harbor Boulevard and Evergreen Avenue; Figure 7: Intersection 5 – Jefferson Boulevard and Sacramento Avenue; Figure 8:

Intersection 6 – Jefferson Avenue and Michigan Boulevard; The specific improvements on a site by site basis are provided on the “Notes” sheet further below:
(Continue description on “Notes” sheet, last page of this Exhibit, if necessary) Preliminary Design Information:

Does the project involve any of the following? Please check the appropriate boxes and delineate on an attached map, plan, or layout including any additional pertinent information.

Yes No Yes No Yes No
Widen existing roadway Ground disturbance Easements
Increase number of through lanes Road cut/fill Equipment staging New alignment Excavation: anticipated Temporary access road/detour Capacity increasing—other maximum depth apprx. 6ft Utility relocation (e.g., channelization) Right of way acquisition
Drainage/culverts (if yes, attach map with APN)
Realignment Flooding protection
Ramp or street closure Stream channel work Disposal/borrow sites Bridge work
Pile driving Part of larger adjacent project
Vegetation removal
Tree removal Demolition Railroad
Required Attachments:

Regional map Project location map Project footprint map (existing/proposed right of way)
Engineering drawings (existing and proposed cross sections), if available Borrow/disposal site location map, if applicable (Note: all maps (except project location map and regional maps) should be consistent with the project description (minimum scale: 1" = 200').) Notes to support the conclusions of this checklist/project description continuation page (attached) Attachment 3
665
Local Assistance Procedures Manual Exhibit 6-A
Preliminary Environmental Study (PES) Form

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OB 13-02 March 14, 2013
Examine the project for potential effects on the environment, direct or indirect and answer the following questions.

The “construction area,” as specified below, includes all areas of ground disturbance associated with the project, including staging and stockpiling areas and temporary access roads.

Each answer must be briefly documented on the “Notes” pages at the end of the PES Form.

A. Potential Environmental Effects Yes To Be
Determined
No
General

1. Will the project require future construction to fully utilize the design capabilities included in the proposed project?

2. Will the project generate public controversy?
Noise

3. Is the project a Type I project as defined in 23 CFR 772.5(h); “construction on new location or the physical alteration of an existing highway, which significantly changes either the horizontal or vertical alignment or increases the number of through-traffic lanes”?

4. Does the project have the potential for adverse construction-related noise impact (such as related to pile driving)?
Air Quality

5. Is the project in a NAAQS non-attainment or maintenance area?

6. Is the project exempt from the requirement that a conformity determination be made? (If “Yes,” state which conformity exemption in 40 CFR 93.126, Table 2 applies): Pedestrian Facilities

7. Is the project exempt from regional conformity? (If “Yes,” state which conformity exemption in 40 CFR 93.127, Table 3 applies):

8. If project is not exempt from regional conformity, (If “No” on Question #7) Is project in a metropolitan non-attainment/maintenance area? Is project in an isolated rural non-attainment area?
Is project in a CO, PM10 and/or PM2.5 non-attainment/maintenance area? Hazardous Materials/Hazardous Waste

9. Is there potential for hazardous materials (including underground or aboveground tanks, etc.) or hazardous waste (including oil/water separators, waste oil, asbestos-containing material, lead-based paint, ADL, etc.) within or immediately adjacent to the construction area? Water Quality/Resources

10. Does the project have the potential to impact water resources (rivers, streams, bays, inlets, lakes, drainage sloughs) within or immediately adjacent to the project area?

11. Is the project within a designated sole-source aquifer? Coastal Zone

12. Is the project within the State Coastal Zone, San Francisco Bay, or Suisun Marsh? Floodplain

13. Is the construction area located within a regulatory floodway or within the base floodplain (100-year) elevation of a watercourse or lake?
Wild and Scenic Rivers

14. Is the project within or immediately adjacent to a Wild and Scenic River System? Biological Resources

15. Is there a potential for federally listed threatened or endangered species, or their critical habitat or essential fish habitat to occur within or adjacent to the construction area?

16. Does the project have the potential to directly or indirectly affect migratory birds, or their nests or eggs (such as vegetation removal, box culvert replacement/repair, bridge work, etc.)?

17. Is there a potential for wetlands to occur within or adjacent to the construction area? Attachment 3
666
Exhibit 6-A Local Assistance Procedures Manual
Preliminary Environmental Study (PES) Form

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March 14, 2013 OB 13-02

18. Is there a potential for agricultural wetlands to occur within or adjacent to the construction area?

19. Is there a potential for the introduction or spread of invasive plant species? Sections 4(f) and 6(f)

20. Are there any historic sites or publicly owned public parks, recreation areas, wildlife or waterfowl refuges (Section 4[f]) within or immediately adjacent to the construction area?

21. Does the project have the potential to affect properties acquired or improved with Land and Water Conservation Fund Act (Section 6[f]) funds?
Visual Resources

22. Does the project have the potential to affect any visual or scenic resources? Relocation Impacts

23. Will the project require the relocation of residential or business properties? Land Use, Community, and Farmland Impacts

24. Will the project require any right of way, including partial or full takes? Consider construction easements and utility relocations.

25. Is the project inconsistent with plans and goals adopted by the community?

26. Does the project have the potential to divide or disrupt neighborhoods/communities?

27. Does the project have the potential to disproportionately affect low-income and minority populations?

28. Will the project require the relocation of public utilities?

29. Will the project affect access to properties or roadways?

30. Will the project involve changes in access control to the State Highway System (SHS)?

31. Will the project involve the use of a temporary road, detour, or ramp closure?

32. Will the project reduce available parking?

33. Will the project construction encroach on state or federal lands?

34. Will the project convert any farmland to a different use or impact any farmlands? Cultural Resources

35. Is there National Register listed, or potentially eligible historic properties, or archaeological resources within or immediately adjacent to the construction area? (Note: Caltrans PQS answers question #35)

36. Is the project adjacent to, or would it encroach on Tribal land? For Sections B, C, and D, check appropriate box to indicate required technical studies, coordination, permits, or approvals.

B. Required Technical Studies
and Analyses
C. Coordination D. Anticipated
Actions/Permits/Approvals
Traffic
Check one:

Traffic Study Caltrans Approval
Technical Memorandum Caltrans Approval
Discussion in ED Only Caltrans Approval
Noise
Check as applicable:

Traffic Related
Construction Related
Check one:

Noise Study Report Caltrans Approval
NADR Caltrans Approval
x
Attachment 3
667
Local Assistance Procedures Manual Exhibit 6-A
Preliminary Environmental Study (PES) Form

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OB 13-02 March 14, 2013
Technical Memorandum Caltrans Approval
Discussion in ED Only Caltrans Approval
Air Quality
Check as applicable:

Traffic Related
Construction Related
Check one:

Air Quality Report Caltrans Approval
Technical Memorandum Caltrans Approval
Discussion in ED Only Caltrans Approval
FHWA Conformity Finding (23 USC 327 CEs,
EAs, EISs)
Caltrans Conformity Finding ( 23 USC 326 CEs)
Regional Agency PM10/PM2.5 Interagency Consultation
Hazardous Materials/
Hazardous Waste
Check as applicable:

Initial Site Assessment
(Phase 1)
Caltrans Approval
Preliminary Site Assessment
(Phase 2)
Caltrans Approval
Discussion in ED Only Caltrans Approval
Cal EPA DTSC Review Database
Local Agency Review Database
Water Quality/Resources
Check as applicable:

Water Quality Assess. Report Caltrans Approval
Technical Memorandum Caltrans Approval
Discussion in ED Only Caltrans Approval
Sole-Source Aquifer
(Districts 5, 6 and 11) EPA (S.F. Regional Office) Approval of Analysis in ED Coastal Zone CCC Coastal Zone Consistency Determination AQ Exempt
JL 2/11/21
MM
2/11/21
Attachment 3
668
Exhibit 6-A Local Assistance Procedures Manual
Preliminary Environmental Study (PES) Form

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March 14, 2013 OB 13-02
B. Required Technical Studies
and Analyses
C. Coordination D. Anticipated
Actions/Permits/Approvals
Floodplain
Check as applicable:

Location Hydraulic Study Caltrans Approval
Floodplain Evaluation Report Caltrans Approval
Summary Floodplain
Encroachment Report
Caltrans Approval
Caltrans Only Practicable Alternative Finding
FHWA Approves significant encroachments and
concurs in Only Practicable Alternative
Findings
Wild and Scenic Rivers
River Managing Agency Wild and Scenic Rivers Determination Biological Resources
Check as applicable:

NES, Minimal Impact Caltrans Approval
NES
BA Caltrans Approves for Consultation
USFWS Section 7 Informal/Formal Consultation
NOAA Fisheries
EFH Evaluation NOAA Fisheries MSA Consultation
Bio-Acoustic Evaluation NOAA Fisheries Approval
Technical Memorandum Caltrans Approval
Wetlands
Check as applicable:

WD and Assessment Caltrans Approval
ACOE Wetland Verification
NRCS Agricultural Wetland Verification
Caltrans Wetlands Only Practicable Alternative
Finding
Invasive Plants
Discussion in ED Only Caltrans Approval
Section 4(f)
Check as applicable:

Caltrans Determine Temporary Occupancy
De minimis Caltrans De minimis finding
Programmatic 4(f) Evaluation Caltrans Approval
Type: railroad
Individual 4(f) Evaluation Caltrans Approval
Agency with Jurisdiction
SHPO
DOI
HUD
USDA

B. Required Technical Studies
and Analyses
C. Coordination D. Anticipated
Actions/Permits/Approvals

BT
2/10/21
Attachment 3
669
Local Assistance Procedures Manual Exhibit 6-A
Preliminary Environmental Study (PES) Form

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OB 13-02 March 14, 2013
Section 6(f)
Agency with Jurisdiction
NPS Determines Consistency with Long-Term
Management Plan
NPS Approves Conversion
Visual Resources
Technical Memorandum Caltrans Approval
Minor VIA Caltrans Approval
Moderate VIA Caltrans Approval
Advance/Complex VIA Caltrans Approval
Relocation Impacts
Check one:

Relocation Impact Memo Caltrans Approval
Relocation Impact Study Caltrans Approval
Relocation Impact Report Caltrans Approval
Land Use and
Community Impacts
Check one:

CIA Caltrans Approval
Technical Memorandum Caltrans Approval
Discussion in ED Only Caltrans Approval
Construction/Encroachment
on State Lands
Check as applicable:

SLC Jurisdiction SLC SLC Lease
Caltrans Jurisdiction Caltrans Encroachment Permit
SP Jurisdiction SP Encroachment Permit
Construction/Encroachment
on Federal Lands
Federal Agency with
Jurisdiction
Encroachment Permit
Construction/Encroachment
On Indian Trust Lands
Bureau of Indian Affairs Right of Way Permit
Farmlands
Check one:

CIA Caltrans Approval
Technical Memorandum Caltrans Approval
Discussion in ED Only Caltrans Approval
Check as applicable:

Form AD 1006 NRCS Approves Conversion
CDOC Approves Conversion
Conversion to Non-Agri Use ACOE
Attachment 3
670
Exhibit 6-A Local Assistance Procedures Manual
Preliminary Environmental Study (PES) Form

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March 14, 2013 OB 13-02
B. Required Technical Studies
and Analyses
C. Coordination D. Anticipated Actions/Permits/
Approvals
Cultural Resources
(PQS completes this section)
Check as applicable:

Caltrans PQS Screened Undertaking
APE Map Caltrans PQS and DLAE Approves APE Map
Local Preservation Groups
and/or Native American
Tribes
Provides Comments Regarding Concerns
with Project
HPSR Caltrans Approves for Consultation
ASR
HRER
Finding of Effect Report Caltrans Concurs on No Effect, No Adverse Effect with Standard Conditions
SHPO Letter of Concurrence on Eligibility, No
Adverse Effect without Standard
MOA Ca ltrans Approves MOA
SHPO Approves MOA
ACHP (if requested) Approves MOA
Permits
Copies of permits and a list of ACOE Section 404 Nationwide Permit mitigation commitments are ACOE Section 404 Individual Permit mandatory submittals following Caltrans/ACOE/EPA NEPA/404 Integration MOU NEPA approval. USFWS
NOAA Fisheries
ACOE Rivers and Harbors Act Section 10 Permit
USCG USCG Bridge Permit
RWQCB Section 401 Water Quality Certification
CDFG Section 1602 Streambed Alteration
Agreement
RWQCB NPDES Permit
CCC Coastal Zone Permit
Local Agency
BCDC BCDC Permit
Notes: Additional studies may be required for other federal agencies. x
x
Attachment 3
671
Local Assistance Procedures Manual Exhibit 6-A
Preliminary Environmental Study (PES) Form

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OB 13-02 March 14, 2013
ACHP = Advisory Council on Historic Preservation
ACOE = U.S. Army Corps of Engineers
ADL = Aerially Deposited Lead
APE = Area of Potential Effect
APN = Assessor Parcel Number
ASR = Archaeological Survey Report
BA = Biological Assessment
BCDC = Bay Conservation and Development Commission
BE = Biological Evaluation
BO = Biological Opinion
Cal EPA = California Environmental Protection Agency
CCC = California Coastal Commission
CDFG = California Department of Fish and Game
CDOC = California Department of Conservation
CE = Categorical Exclusion
CIA = Community Impact Assessment
CWA = Clean Water Act
DLAE = District Local Assistance Engineer
DOI = U.S. Department of Interior
DTSC = Department of Toxic Substances Control
EA = Environmental Assessment
ED = Environmental Document
EFH = Essential Fish Habitat
EIS = Environmental Impact Statement
EPA = U.S. Environmental Protection Agency
FEMA = Federal Emergency Management Agency
FHWA = Federal Highway Administration
FONSI = Finding of No Significant Impacted
FTIP = Federal Transportation Improvement Program
HPSR = Historic Property Survey Report
HRER = Historical Resources Evaluation Report
HUD = U.S. Housing and Urban Development
MOA = Memorandum of Agreement
MSA = Magnuson-Stevens Fishery Conservation and
Management Act
NEPA = National Environmental Policy Act
NADR = Noise Abatement Decision Report
NES = Natural Environment Study
NHPA = National Historic Preservation Act
NOAA = National Oceanic and Atmospheric Administration
NMFS National Marine Fisheries Service
NPDES = National Pollutant Discharge Elimination System NPS = National Park Service
NRCS = Natural Resources Conservation Service
PM10 = Particulate Matter 10 Microns in Diameter or Less PM2.5 = Particulate Matter 2.5 Microns in Diameter or Less PMP = Project Management Plan
PQS = Professionally Qualified Staff
ROD = Record of Decision
RTIP = Regional Transportation Improvement Program
RTP = Regional Transportation Plan
RWQCB = Regional Water Quality Control Board
SER = Standard Environmental Reference
SEP = Senior Environmental Planner
SHPO = State Historic Preservation Officer
SLC = State Lands Commission
SP = State Parks
TIP = Transportation Improvement Program
USCG = U.S. Coast Guard
USDA = U.S. Department of Agriculture
USFWS = U.S. Fish and Wildlife Service
WD = Wetland Delineation
Attachment 3
672
Attachment 3
673
Local Assistance Procedures Manual Exhibit 6-A
Preliminary Environmental Study (PES) Form

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OB 13-02 March 14, 2013
Caltrans District Professionally Qualified Staff (PQS) Signature Project does not meet definition of an “undertaking”; no further review is necessary under Section 106 (“No” Section A, #35).

Project is limited to the type of activity listed in Attachment 2 of the Section 106 PA and based on the information provided in the PES Form, the project does not have the potential to affect historic properties (“No” Section A, #35).

Project is limited to the type of activity listed in Attachment 2 of the Section 106 PA, but the following additional procedures or information is needed to determine the potential for effect (“To Be Determined” Section A, #35):

Records Search
Project meets the definition of an “undertaking”; all properties in the project area are exempt from evaluation per Attachment 4 of the Section 106 PA (“No” Section A, #35).

The proposed undertaking is considered to have the potential to affect historic properties; further studies for 106 compliance are indicated in Sections B, C, and D of this PES Form (“Yes” Section A, #35). (Signature of Professionally Qualified Staff) (Date) (Telephone No.) The following signatures are required for all CEs, routine and complex EAs, and EISs:

Caltrans District Senior Environmental Planner (or Designee) and DLAE Signatures I have reviewed this Preliminary Environmental Study (PES) Form and determined that the submittal is complete and sufficient. I concur with the studies to be performed and the recommended NEPA Class of Action. (Signature of Senior Environmental Planner or Designee) (Date) (Telephone No.) (Name)
(Signature of District Local Assistance Engineer or Designee) (Date) (Telephone No.) (Name)
HQ DEA Environmental Coordinator concurrence ________________________. Email concurrence attached. (date)
(Signature of District Local Assistance Engineer or Designee) 2/8/2021 (530)812-6133
Darlene Wulff
(Signature of Professionally Qualified Staff)
2/18/21 (530) 720-2649
(Signature of Senior Environmental Planner or Designee) 02/23/21 (530) 812-4937
Attachment 3
674
Exhibit 6-A Local Assistance Procedures Manual
Preliminary Environmental Study (PES) Form

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March 14, 2013 OB 13-02
Preliminary Environmental Investigation
Notes to Support the Conclusions of the PES Form
(May Also Include Continuation of Detailed Project Description) Project Location
The project area is entirely within the City of West Sacramento (City) within existing intersections rights-of-way, and adjacent sidewalk and previously disturbed areas for the installation pole masts. The City is located in Yolo County, California. The proposed project would make minor improvements to 6 intersections within the City. Improvements would require drilling to a depth of 6’6” to support footings for the new poles. The intersections include 1) Jefferson Boulevard & Sacramento Avenue; 2) Jefferson Boulevard & Michigan Boulevard; 3) Harbor Boulevard & Evergreen Avenue; 4) Harbor & Reed Avenue; 5) Harbor Boulevard & Riverpoint Court; and 6) Harbor Boulevard & Duluth Street.

Purpose and Need
The purpose of the project is to reduce collisions and potential collisions by installing cost effective signal improvements to increase the safety of existing intersections and roadways. The City analyzed existing intersections and collision data with the purpose to identify intersections that would benefit from improvements. The analysis focused on the following initial objectives:
• Identify a list of traffic safety projects to implement based on the data-driven collision analysis, feasibility, cost, and schedule constraints while maintaining a benefit cost-ratio that is competitive for Highway Safety Improvements Program (HSIP) Cycle 9 grant applications;
• Identify project which will improve safety of vehicles, bicyclists and pedestrian on local facilities throughout the City;
• Prioritize key corridors where safety can be improved through cost-effective countermeasures; and • Secure funding to implement safety improvements through the HISP funded by the Federal Highway Administration (FHWA).

Based on the evaluation of intersection safety, certain signalized intersection countermeasures were developed. Among these improvements are the following:
1) Improve Signal Hardware: This countermeasure has a CRF of 15% by improving signal visibility. This can be done through adding back plate, increasing the number of signal heads, or enhancing light lenses; and 2) Install Flashing Beacons as Advance Warning: This countermeasure has a CRF of 30% by alerting drivers of the signalized intersection ahead. This countermeasure can satisfy driver’s expectation by giving them more times to react to the traffic and control condition at the upstream intersection.

To meet the objectives and improve traffic and pedestrian safety, the City used and analyzed information in the data sets for each reported collision and developed a strategy including physical improvements that would improve safety. Information analyzed included the date, time, location, traffic control, weather, severity of the collision, primary collision factor, lighting, and California Highway Patrol (CHP) notes. To satisfy the need of reducing these causative factors, the proposed project includes signalization improvements at the six aforementioned intersections.

The findings of the analysis were used to develop an initial set of identified projects that were further refined by the City staff.

Projects were filtered by cost, feasibility, constraints, competitiveness of Benefit Cost Ratio (BCR), field observations, and potential safety benefits. One of the purposes of the proposed project is to increase the safety of intersections and travel ways.

Another purpose of the project is to remedy these deficiencies by resolving conflicts and difficult crossing conditions across arterial roads, roadways with a history of pedestrian crossing-related crashes, and areas with a higher probability of experiencing crashes due to present conditions. All proposed improvements were identified based on a combination of deficiencies including signalization, crossings, traffic monitoring, and traffic detection.

The evaluation of the crash records for the city’s roadway network showed that the intersection improvements are needed.

The crash records revealed there were 23 fatal crashes and 42 severe injury crashes in the City. This made up 0.67% and

1.23% of all crashes, respectively. While this was an overall low percentage of total crashes, the significance of death and severe injury accidents define and justify the need to improve safety. It was also noted that pedestrian crashes made up 30.7% Attachment 3
675
Local Assistance Procedures Manual Exhibit 6-A
Preliminary Environmental Study (PES) Form

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OB 13-02 March 14, 2013
of the total equivalent property damage only (EPDO) score, and bicycle crashes comprised 12.1%. Ranked by the EPDO score, the top three factors leading to crashes were pedestrian violations (which means that crash occurred mainly due to pedestrians violating right-of-way), vehicles travelling at unsafe speeds (which means that the speed of the vehicle was not safe given the roadway/environment condition), and wrong way driving (which means that crash occurred due to driving on the wrong direction of the road).

Project Description
Overview
Consistent with efforts of the City to improve safety on some of its major arterials, the proposed project would enhance the multi-modal transportation network by installing flashing beacon signal ahead signs; replace of 8” signal heads with new 12” heads, new signal mounting brackets; replace pedestrian pushbutton (PPB) with accessible pedestrian signal (APS); video detection radars; replacement of pedestrian signal heads with countdown pedestrian heads; new pole masts, and other improvements. The improvements are intended to provide for more efficient conduction of traffic and to increase the safety pedestrian and bicycle crossings at these intersection along Jefferson Boulevard (four improvements) and Harbor Boulevard (two improvements). In part, the improvements are based on a review of city-wide crash data and that would help remedy the safety issues at the locations.

The proposed improvements at each of these locations are anticipated to improve safety by notifying drivers of pedestrians and notifying drivers of pedestrian crossings, and making the use of crossings, by both pedestrian and cyclists easier and safer.

This would be done by installing the new listed hardware and improved crossing notifications. In large part, this will help to alert drivers of the presence of pedestrians and providing addition time to recognize when they are present. Project improvements are proposed to occur at the following intersections. 1) Jefferson Boulevard & Sacramento Avenue; 2) Jefferson Boulevard & Michigan Boulevard; 3) Harbor Boulevard & Evergreen Avenue; 4) Harbor & Reed Avenue; 5) Harbor Boulevard & Riverpoint Court; and 6) Harbor Boulevard & Duluth Street. The specific project improvement at each location are shown in the following Figures in Attachment A to this document: Figure 3: Intersection 1 – Harbor Boulevard and Reed Avenue; Figure 4: Intersection 2 – Harbor Boulevard and Riverpoint Court; Figure 5: Intersection 3 – Harbor Boulevard and Duluth Street; Figure 6: Intersection 4 – Harbor Boulevard and Evergreen Avenue; Figure 7: Intersection 5 – Jefferson Boulevard and Sacramento Avenue; and Figure 8: Intersection 6- Jefferson Avenue and Michigan Boulevard. Each figure shows the existing traffic control devices, as well as the location of all proposed improvements.

Improvements and Construction
The proposed project would require minor removals of existing isolated areas of hardscape and concrete to enable improvements. Minimal removal of the underlying dirt/soil would be needed to install the bases and supports for new signal masts. The proposed project does not include any roadway improvements including additional lanes or alignment changes.

The majority of other project elements would not require any removals or excavation. These improvements would consist of replacing existing above ground traffic control devices, and replacing and upgrading parts of existing traffic control devices such as video detection, radars, replacing PPB’s with APS devices, installation of street name signs, and replacement of signal heads and mounting brackets, and installation of solar powered flashing beacons.

Subsurface removals would be needed to facilitate installation of new signal poles. This would require excavation to a depth of approximately 6’6” within an area needed to install the base for the signal poles. Due to the limited needed excavations and the majority of improvements being above ground and replacing and installing new traffic direction, safety, and detection devices, not utility relocations would be required.

Improvements and Construction
Construction of the proposed project would not require complete street closures during construction but may temporarily result in short-term single lane closure to facilitate installation of new sign masts and signal arms. Construction is anticipated to occur over a 12-month period. Construction is anticipated to begin in July of 2021 and be completed in 2022.

Brief Explanation of How Project Complies, or Will Comply with Applicable Federal Mandate (Part A):

Attachment 3
676
Exhibit 6-A Local Assistance Procedures Manual
Preliminary Environmental Study (PES) Form

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West Sacramento City CouncilJune 26, 2024

West Sacramento City Council
June 26, 2024