Phase 3 Chemical Data Gap Sampling Investigation

DOE and DTSC have been in the field working on Phase 3 Chemical Data Gap Investigation for Area IV and the NBZ of the SSFL. Like during the co-located sampling effort several documents have been prepared by CDM, DOE's contractor and approved by DTSC. Those documents and approvals can be found on this page.


June 2015

Technical Memorandum Phase 3 Chemical Data Gap Investigation Sampling Results, Go-Backs, Trenches and Soil Vapor

July 2014

DTSC approves Department of Energy's request to defer implementing the 6 soil vapor probe locations in Subarea 5A and 3 Test/Pit Trenching locations in Subarea 5D until remedial phase due to bird nesting identified by the site biologist. See supporting documentation here.

May 2014

DTSC approves Addendum No. 11 to Master Field Sampling Plan for Chemical Data Gap Investigation, Phase 3 Go-Back Soil Chemical Sampling at Area IV, Subareas 5A, 5D, 8, and the Northern Buffer Zone (CDM Smith, 4/2014). Addendum No. 11 supports implementation of the soil sampling program described in the "Work Plan for Chemical Data Gap Investigation, Phase 3 Soil Chemical Sampling at Area IV, Santa Susana Filed Laboratory, Ventura County, California" (4/2012). Also see Attachment 1 Final Phase 3 Data Gap Analysis for Subareas 5A, 5D, 8 and the Northern Buffer Zone Technical Memorandum, Santa Susana Field Laboratory, Ventura County (MWH, 2014).

April 2014

DTSC approves addendum No. 20 Final Soil Vapor SOP to the Master Field Sampling Plan for Chemical Data Gap Investigation, Phase 3 Chemical Sampling at Area IV. Addendum No. 20 describes recommended soil vapor surveying procedures for use on the Department of Energy (DOE)‚Äźadministered property at the Santa Susana Field Laboratory (SSFL). DOE will use this SOP for the collection of soil vapor data that will be used to address data gaps identified during the data gap analysis performed as part of the Phase 3 chemical characterization. Also, please see Appendix A Advisory Active Soil Gas Investigation.

On April 22, 2014 the U.S. Department of Energy (DOE) along with the California Department of Toxic Substances Control (DTSC) hosted a public meeting to discuss Phase 3 Chemical Data Gap Sampling, Final Phase 3 Data Gaps Block 2 Go-Backs for Subareas 5A, 5D, 8, and the Northern Buffer Zone (NBZ) including GIS. Here is the presentaion from that meeting:

DTSC-DOE Phase 3 Go-Backs

January 2014

DTSC approves Addendum No. 10 to the Master Field Sampling Plan for Chemical Data Gap Investigation, Phase 3 Go-Back Soil Chemical Sampling at Area IV for Subareas 5B, 5C and 3/6. Addendum No. 10 includes the data gap analysis and proposed sampling locations and objectives for each sample.

November 2013

DTSC approves Addendum No. 9 to the Master Field Sampling Plan For Chemical Data Gap Investigation, Phase 3 Chemical Sampling at Area IV for the Northern Buffer Zone. This addendum includes the data gap sampling analysis and the proposed sampling locations and objective for each sample.

DTSC approves Phase 3 Subarea 5A North Implementation Plan. The Implementation Plan supplements the Subarea 5A Data Gap Analysis Technical Memorandum that was submitted as Attachment 1 in Addendum No. 4 to the Master Field Sampling Plan to Chemical Data Gap Investigation, Phase 3 Soil Chemical Sampling at Area IV and was approved by DTSC in September 2012.

October 2013

On October 29, 2013, the U.S. Department of Energy (DOE) along with the California Department of Toxic Substances Control (DTSC) hosted a public meeting to discuss proposed sampling locations for the Northern Buffer Zone, go-backs data gap criteria and proposed go-back samples. Here is the presentation from that meeting:

Phase 3 Chemical Sampling-Northern Buffer Zone and "Go-Backs" Presentation

August 2013

DTSC approves revised Addendum No. 7 to the Chemical Data Gap Investigation Work Plan. Addendum No. 7 includes the data gap analysis and the proposed sampling locations and objectives for Subarea 8.

DTSC approves Addendum No. 8 to the Chemical Data Gap Investigation Work Plan. Addendum No. 8 includes the data gap analysis and the proposed sampling locations and objectives for Subarea 5D.

On August 6, 2013, the U.S. Department of Energy (DOE) along with the California Department of Toxic Substances Control (DTSC) hosted a public meeting to discuss proposed sampling locations for Subarea 5D . This subarea is the next area where DOE will be performing data gap chemical sampling. Here is the presentation from that meeting:

Phase 3 Chemical Sampling-Subarea 5D Presentation

July 2013

Technical Memorandum Phase 3 Sampling Results- Drainage Sediment Sampling in Area III

June 2013

DTSC approve Addendum No. 7 to the Chemical Data Gap Investigation Work Plan. Addendum No. 7 includes the data gap analysis and the proposed sampling locations and objectives for Subarea 8 (revised August 2013).

On June 11, 2013, the U.S. Department of Energy (DOE) along with the California Department of Toxic Substances Control (DTSC) hosted a public meeting to discuss proposed sampling locations for Historical Site Assessment (HSA) subarea 8. This subarea is the next area where DOE will be performing data gap chemical sampling. Here is the presentation from that meeting:

Phase 3 Chemical Sampling- Subarea 8 Presentation

April 2013

DTSC approves Addendum No. 6 to the Chemical Data Gap Investigation Work Plan. Addendum No. 6 includes the data gap analysis and the proposed sampling locations and objectives for Subarea 7.

February 2013

Technical Memorandum Phase 3 Sampling Results for Subarea 5C

January 2013

DTSC has approved the updated Standard Operating Procedures (SOPs) for the Phase 3 Chemical Sampling. A list of all the SOPs can be found below:

SOP1 Staking Locations
SOP2 Surface Soil Sampling
SOP3 Hand Auger Subsurface Sampling
SOP4 Direct Push Technology Sampling
SOP5 Trenching
SOP6 Field Measurement of Total Organic Vapors
SOP7 Field Measurement of Residual Radiation
SOP8 Field Data Collection Documents, Content and Control SOP9 Lithologic Logging
SOP10 Sampling Custody
SOP11 Packaging and Shipping Environmental Samples
SOP12 Field Equipment Decontamination
SOP13 Guide to Handling Investigation-Derived Waste
SOP14 Geophysical Survey
SOP15 Photographic Documentation of Field Activities
SOP16 Control of Measurement and Test Equipment
SOP17 Laboratory Homogeniztion for Phase 3 Samples
SOP18 Clean Sampling Method for Methyl Mercury

November 2012

DTSC approves Addendum No. 5 to the Chemical Data Gap Investigation Work Plan. Addendum No. 5 includes the data gap analysis and the proposed sampling locations and objectives for Subareas 3 and 6.

August 2012

On August 9, 2012, the U.S. Department of Energy (DOE) along with the California Department of Toxic Substances Control (DTSC) hosted a public meeting to discuss proposed sampling locations for Historical Site Assessment (HSA) subarea 5A. This subarea is the next area where DOE will be performing data gap chemical sampling. Here is the presentation and handout from that meeting:

Phase 3 Chemical Sampling-Subarea 5A Presentation
Action Items Status Handout

DTSC approves Addendum No. 4 to the Chemical Data Gap Investigation Work Plan. Addendum No. 4 includes the data gap analysis and the proposed sampling locations and objectives for Subarea 5A.

July 2012

DOE presents an overview of drainage sediment sampling in Area III. Sampling is expected to take place in July.

DTSC approves the Standard Operating Procedure (SOP) No. 19 for the sediment sampling at standing water sample locations.

June 2012

The Phase 3 Soil Chemical Sampling at Area IV of the Santa Susana Field Laboratory (SSFL) addresses the methodologies being implemented to complete the Phase 3 Chemical Data Gap Investigation for Area IV and the NBZ of the SSFL. Addendum No. 2 Subarea 5B and No. 3 Drainage Sediment Sampling in Area III to the Master Field Sampling Plan can be found below:

Addendum No. 2 Subarea 5B
No. 3 Drainage Sediment Sampling in Area III

DTSC Approves Addendum No.2 and Addendum No.3 to the Phase 3 Work Plan for Chemical Data Gap Investigation

April 2012

DTSC Approves Phase 3 Work Plan for Chemical Data Gap Investigation

The Phase 3 Soil Chemical Sampling at Area IV of the Santa Susana Field Laboratory (SSFL) addresses the methodologies being implemented to complete the Phase 3 Chemical Data Gap Investigation for Area IV and the NBZ of the SSFL. The Phase 3 Work Plan, associated appendices and Addendum No. 1 to the Master Field Sampling Plan can be found below:

Work Plan for Chemical Data Gap Investigation
Appendix A Master Field Sampling Plan
Appendix B Quality Assurance Project Plan (QAPP)
Appendix C Worker Safety and Health Program
Appendix D Standard Operating Procedures (SOPs)
Addendum No. 1 to the Master Field Sampling Plan