| Correspondence |
| Correspondence |
Publication
Date |
File Size |
| Boeing Well Abandonment Request |
May 2026 |
1.2 MB |
| DTSC Response to Boeing Well Abandonment Request |
May 2026 |
230 KB |
| Boeing Response to DTSC Review of Response - Groundwater Screening Criteria in the Annual 2024 Groundwater Monitoring Reports |
May 2026 |
145 KB |
| 3rd Quarter 2020 Groundwater Monitoring Letter |
June 2020 |
174 KB |
| NASA Clarification of SSFL Monitoring Network Wells |
July 2019 |
644 KB |
| Letter from David Dassler, Boeing re: Characterization of Chatsworth Operable Unit at the Building 4100/4009 Area |
January 2016 |
574 KB |
| DTSC's response to Boeing's request for approval of substitute analytical methods; proposed low-flow parameter stabilization criteria; and supplemental decontamination standard operating procedures |
January 2013 |
3.5 MB |
| Letter from Randy Ueshiro/Boeing to Richard Brausch/DTSC Regarding Summary of the Regulated Unit Groundwater Monitoring Programs Retrofit and Well Construction |
August 2010 |
108 KB |
| Letter from Thomas Gallacher/Boeing to L.B.Nye/California Regional Water Quality Control Board - Los Angeles Regarding July 2010 Monthly Monitoring Report Submittal Northern Drainage and LOX Area Debris Removal Project |
August 2010 |
1.2 MB |
| Letter from Tom Gallacher/Boeing to Mark Malinowski/DTSC regarding Response to DTSC April 5, 2010 Letter: Requirement to submit information on TCE in goundwater, well injection and well information for WS-9 and WS-10 |
June 2010 |
37.3 MB |
| Letter from Mark Malinowski/DTSC to Tom Gallacher/Boeing, Allen Elliott/NASA, and William Backous/DOE Regarding Requirement to Submit Information on Trichlorethene in Groundwater, Well Injection, and Well Information for WS-09 and WS-10, Santa Susana Field Laboratory |
April 2010 |
547 KB |
| Letter from Thomas Gallacher/Boeing to Richard Brausch/DTSC Regarding Groundwater Remedial Investigation Data Gap - Sampling and Analysis Plan |
March 2010 |
79 KB |
| Letter from Thomas Gallacher/Boeing to Rick Brausch/DTSC Regarding Errata for Report on Quarterly Groundwater Monitoring, First Quarter 2009, January through March 2009 |
February 2010 |
219 KB |
| Letter from Randy Ueshiro/Boeing to James Pappas/DTSC Regarding Draft Report on Regulated Unit, Water Quality Sampling and Analysis Plan, Areas I, II, and III |
December 2009 |
177 KB |
| Letter from Thomas Gallacher/Boeing to Rick Brausch/DTSC Regarding Report on Quarterly Groundwater Monitoring, Second Quarter 2009, April through June 2009 |
August 2009 |
303 KB |
| Letter from Art Lenox/Boeing to Norman Riley/DTSC Regarding VOC Analysis for Well RD-06 and Well RD-37 |
June 2009 |
172 KB |
| Letter from Thomas Gallacher/Boeing to Norman Riley/DTSC Regarding Report on Quarterly Groundwater Monitoring, First Quarter 2009, January through March 2009 |
May 2009 |
260 KB |
| Report on Annual Groundwater Monitoring 2008 |
February 2009 |
232 KB |
| Third Quarter 2008 Report on Quarterly Groundwater Monitoring - Transmittal Letter |
November 2008 |
200 KB |
| Report of Springs Sampling |
November 2008 |
7.2 MB |
| Report on Collection of Unfiltered Groundwater Samples |
August 2008 |
8.1 MB |
| Conditional Approval of the Workplan for the Phase 2 Groundwater Site Conceptual Model |
September 2007 |
166 KB |
| Conditional Approval of the Workplan for the Phase 3 Groundwater Site Conceptual Model |
September 2007 |
237 KB |
| Geological Characterization of the Central SSFL |
August 2007 |
7.9 MB |
| Requirement to Submit Groundwater Interim Measures Workplan and Reinitiate CertaiN Extraction Wells |
April 2007 |
175 KB |
| Data Review of Perchlorate Test Results for Samples Collected At Bathtub Well #1 (OS-9) |
April 2004 |
7.3 MB |
| Letter from Art Lenox/Boeing to Jose Kou/DTSC Regarding Annual Groundwater Monitoring Report - January through December 2001 |
February 2002 |
230 KB |
| Groundwater Monitoring Report - Third Quarter 2001 |
November 2001 |
222 KB |
| Letter from Stephen Baxter/DTSC to Art Lenox/Boeing Regarding Quarterly and Annual Groundwater Monitoring Reports |
August 2001 |
205 KB |
| Memorandum from Christopher Bonds/DTSC to Stephen Baxter/DTSC Regarding Minimum Reporting Requirements Review - Report an Annual Groundwater Monitoring, 2000 |
June 2001 |
1.1 MB |
| Letter from Paul Chang/Boeing to Jose Kou/DTSC Regarding Groundwater Monitoring Quarterly Report, First Quarter 2001 - January through March 2001 |
May 2001 |
227 KB |
| Letter from Paul Chang/Boeing to Greg Sweel/DTSC Regarding Draft Water Quality Sampling and Analysis Plan for Santa Susana Field Laboratory |
May 2001 |
47 KB |
| Letter from Paul Chang/Boeing to Jose Kou/DTSC Regarding Annual Groundwater Monitoring Quarterly Report - January through December 2000 |
February 2001 |
222 KB |
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