Click on the boxes in the flow-chart below to view documents from each phase of the process.
Important Notice Accessibility of Older Documents Expires After December 30, 2020
All documents published before January 1, 2020 will no longer be accessible on this website after December 30, 2020. After December 30, 2020 all older documents can be accessed through the project repositories or by direct request to California Department of Toxic Substances Control.
Groundwater and Surface Water Monitoring Reports
| Type | Download | Document Name | Publish Date | Size |
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Click to Download | Appendix A - Fourth Quarter 2020 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report | March 15, 2021 | 44.93 MB |
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Click to Download | Appendix C - Fourth Quarter 2020 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report | March 15, 2021 | 101.33 MB |
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Click to Download | Fourth Quarter 2020 Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report | March 15, 2021 | 21.83 MB |
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Click to Download | Appendix A - Third Quarter 2020 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report | December 15, 2020 | 10.23 MB |
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Click to Download | Third Quarter 2020 Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report | December 15, 2020 | 16.94 MB |
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Click to Download | Appendix A - Second Quarter 2020 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report | August 15, 2020 | 29.97 MB |
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Click to Download | Second Quarter 2020 Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report | August 15, 2020 | 18.31 MB |
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Click to Download | Appendix A - First Quarter 2020 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report | April 30, 2020 | 89.08 MB |
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Click to Download | First Quarter 2020 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report | April 30, 2020 | 16.03 MB |
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Click to Download | Appendix A (Part 1) - Fourth Quarter 2019 and Annual Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report | March 13, 2020 | 97.68 MB |
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Click to Download | Appendix A (Part 2) - Fourth Quarter 2019 and Annual Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report | March 13, 2020 | 50.02 MB |
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Click to Download | Appendix C (Part 1) - Fourth Quarter 2019 and Annual Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report | March 13, 2020 | 81.82 MB |
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Click to Download | Appendix C (Part 2) - Fourth Quarter 2019 and Annual Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report | March 13, 2020 | 222.73 MB |
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Click to Download | Fourth Quarter 2019 and Annual Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report (excludes Appendix A and C) | March 13, 2020 | 55.63 MB |
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Click to Download | Appendix A - Third Quarter 2019 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report | December 15, 2019 | 53.33 MB |
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Click to Download | Third Quarter 2019 Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report | December 15, 2019 | 24.19 MB |
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Click to Download | Appendix A - Second Quarter 2019 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report | August 15, 2019 | 55.89 MB |
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Click to Download | Second Quarter 2019 Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report | August 15, 2019 | 24.09 MB |
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Click to Download | Appendix A - First Quarter 2019 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report | April 30, 2019 | 47.06 MB |
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Click to Download | First Quarter 2019 Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report | April 30, 2019 | 23.14 MB |
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Click to Download | Appendix A - Fourth Quarter 2018 and Annual Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report | March 15, 2019 | 105.39 MB |
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Click to Download | Fourth Quarter 2018 and Annual Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report | March 15, 2019 | 40.93 MB |
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Click to Download | Appendix A - Third Quarter 2018 Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring | December 14, 2018 | 36.91 MB |
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Click to Download | Third Quarter 2018 Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring | December 14, 2018 | 20.23 MB |
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Click to Download | Appendix B - Second Quarter 2018 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report | August 15, 2018 | 82.46 MB |
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Click to Download | Second Quarter 2018 Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring | August 15, 2018 | 22.68 MB |
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Click to Download | Appendix B - First Quarter 2018 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report | April 30, 2018 | 67.37 MB |
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Click to Download | First Quarter 2018 Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report | April 30, 2018 | 24.61 MB |
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Click to Download | Appendix B - Fourth Quarter 2017 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report (Part 1) | March 15, 2018 | 299.18 MB |
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Click to Download | Appendix B - Fourth Quarter 2017 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report (Part 2) | March 15, 2018 | 81.66 MB |
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Click to Download | Fourth Quarter 2017 and Annual Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report | March 15, 2018 | 15.76 MB |
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Click to Download | Appendix B - Third Quarter 2017 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report | December 15, 2017 | 44.73 MB |
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Click to Download | Third Quarter 2017 Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report | December 15, 2017 | 20.72 MB |
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Click to Download | Appendix B - Second Quarter 2017 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report | August 15, 2017 | 45.01 MB |
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Click to Download | Second Quarter 2017 Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report | August 15, 2017 | 19.39 MB |
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Click to Download | Appendix B - First Quarter 2017 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report | April 26, 2017 | 68.08 MB |
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Click to Download | First Quarter 2017 Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report | April 26, 2017 | 18.78 MB |
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Click to Download | Appendix B - Fourth Quarter 2016 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report | March 15, 2017 | 153.57 MB |
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Click to Download | Fourth Quarter 2016 and Annual Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report | March 15, 2017 | 17.77 MB |
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Click to Download | Appendix B - Third Quarter 2016 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report | December 15, 2016 | 33.66 MB |
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Click to Download | Third Quarter 2016 Interim Measures Performance Monitoring and Site‐Wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | December 15, 2016 | 9.44 MB |
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Click to Download | Appendix B - Second Quarter 2016 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report | August 15, 2016 | 66.13 MB |
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Click to Download | Second Quarter 2016 Interim Measures Performance Monitoring and Site‐Wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | August 15, 2016 | 9.82 MB |
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Click to Download | Appendix B - First Quarter 2016 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report | April 29, 2016 | 75.1 MB |
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Click to Download | First Quarter 2016 Interim Measures Performance Monitoring and Site‐Wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | April 29, 2016 | 11.33 MB |
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Click to Download | Appendix B - Fourth Quarter 2015 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report | March 15, 2016 | 139.09 MB |
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Click to Download | Fourth Quarter 2015 and Annual Interim Measures Performance Monitoring and Site‐Wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | March 15, 2016 | 17.55 MB |
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Click to Download | Third Quarter 2015 Interim Measures Performance Monitoring and Site‐wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | December 15, 2015 | 10.67 MB |
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Click to Download | Second Quarter 2015 Interim Measures Performance Monitoring and Site‐wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | August 14, 2015 | 44.57 MB |
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Click to Download | First Quarter 2015 Interim Measures Performance Monitoring and Site‐wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | April 30, 2015 | 11.33 MB |
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Click to Download | Fourth Quarter 2014 and Annual Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | March 13, 2015 | 59.1 MB |
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Click to Download | Third Quarter 2014 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | December 15, 2014 | 11.24 MB |
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Click to Download | Second Quarter 2014 Interim Measures Performance Monitoring and Site‐wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | August 15, 2014 | 21.28 MB |
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Click to Download | First Quarter 2014 Interim Measures Performance Monitoring and Site‐wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | April 30, 2014 | 26.98 MB |
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Click to Download | Fourth Quarter 2013 and Annual Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | March 14, 2014 | 56.91 MB |
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Click to Download | Third Quarter 2013 Interim Measures Performance Monitoring and Site‐wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | November 29, 2013 | 23.21 MB |
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Click to Download | Second Quarter 2013 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | August 15, 2013 | 28.95 MB |
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Click to Download | First Quarter 2013 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | May 15, 2013 | 36.57 MB |
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Click to Download | Fourth Quarter 2012 and Annual Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | March 15, 2013 | 62.49 MB |
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Click to Download | Third Quarter 2012 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | November 30, 2012 | 30.72 MB |
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Click to Download | Second Quarter 2012 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | August 15, 2012 | 45.83 MB |
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Click to Download | First Quarter 2012 Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | April 30, 2012 | 31.19 MB |
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Click to Download | Fourth Quarter 2011 and Annual Interim Measures Performance and Site-Wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | March 15, 2012 | 38.65 MB |
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Click to Download | Third Quarter 2011 Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | November 30, 2011 | 22.26 MB |
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Click to Download | Second Quarter 2011 Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | August 15, 2011 | 20.13 MB |
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Click to Download | First Quarter 2011 Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station Needles, California | April 29, 2011 | 19.53 MB |
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Click to Download | Fourth Quarter 2010 and Annual Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station Needles, California | March 15, 2011 | 11.47 MB |
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Click to Download | Third Quarter 2010 Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Reports, PG&E Topock Compressor Station | November 30, 2010 | 17.01 MB |
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Click to Download | Second Quarter 2010 Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | August 30, 2010 | 9.07 MB |
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Click to Download | First Quarter 2010 Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station Needles, California | May 28, 2010 | 17.28 MB |
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Click to Download | Fourth Quarter 2009 and Annual Interim Measures Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report | March 15, 2010 | 29.86 MB |
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Click to Download | Third Quarter 2009 IM Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report PG&E Topock Compressor Station, Needles, California | November 30, 2009 | 5.78 MB |
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Click to Download | Second Quarter 2009 IM Performance Monitoring and Site-Wide Groundwater and Surface Water Monitoring Report PG&E Topock Compressor Station, Needles, California | August 25, 2009 | 5.21 MB |
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Click to Download | First Quarter 2009 Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | June 5, 2009 | 1.3 MB |
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Click to Download | Fourth Quarter 2008 and Annual Summary Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | March 9, 2009 | 1.43 MB |
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Click to Download | Groundwater and Surface Water Monitoring Report, Third Quarter 2008, PG&E Topock Compressor Station, Needles, California | January 5, 2009 | 45.72 MB |
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Click to Download | Second Quarter 2008 Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | August 29, 2008 | 4.99 MB |
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Click to Download | Groundwater and Surface Water Monitoring Report, First Quarter 2008, PG&E Topock Compressor Station, Needles, California | June 13, 2008 | 3.74 MB |
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Click to Download | Groundwater and Surface Water Monitoring Report, Fourth Quarter 2007 and Annual Summary | March 28, 2008 | 19.13 MB |
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Click to Download | Third Quarter 2007 Groundwater and Surface Water Monitoring Report, PG&E Topock Compressor Station, Needles, California | December 28, 2007 | 31.66 MB |
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Click to Download | GW and Surface Water Monitoring Report, 2nd Quarter 2007 | August 31, 2007 | 28.13 MB |
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Click to Download | Groundwater and Surface Water Monitoring Report, First Quarter 2007 | May 31, 2007 | 1.71 MB |
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Click to Download | Groundwater and Surface Water Monitoring Report, Fourth Quarter 2006 | April 2, 2007 | 19.13 MB |
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Click to Download | Groundwater and Surface Water Monitoring Report, Third Quarter 2006 | December 22, 2006 | 41.93 MB |
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Click to Download | Groundwater and Surface Water Monitoring Report, 2nd Quarter 2006 | September 11, 2006 | 2.1 MB |
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Click to Download | First Quarter 2006 Groundwater and Surface Water Monitoring Report | June 1, 2006 | 35.29 MB |
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Click to Download | Fourth Quarter 2005 Groundwater and Surface Water Monitoring Report | March 10, 2006 | 27.69 MB |
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Click to Download | Third Quarter 2005 Groundwater and Surface Water Monitoring Report | December 16, 2005 | 32.19 MB |
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Click to Download | Second Quarter 2005 Groundwater and Surface Water Monitoring Report | August 30, 2005 | 23.49 MB |
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Click to Download | First Quarter 2005 Groundwater and Surface Water Monitoring Report | May 31, 2005 | 17.3 MB |
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Click to Download | Fourth Quarter 2004 Groundwater and Surface Water Monitoring Report | March 24, 2005 | 1.55 MB |
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Click to Download | Third Quarter 2004 Groundwater and Surface Water Monitoring Report | December 28, 2004 | 2.15 MB |
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Click to Download | Second Quarter 2004 Groundwater and Surface Water Sampling Results | August 17, 2004 | 5.05 MB |
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Click to Download | First Quarter 2004 Groundwater and Surface Water Monitoring Report | May 3, 2004 | 941.46 KB |
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Click to Download | Fourth Quarter 2003 Groundwater and Surface Water Monitoring Report | February 2, 2004 | 1.06 MB |
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Click to Download | Third Quarter 2003 Groundwater and Surface Water Monitoring Report | October 24, 2003 | 2.15 MB |
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Click to Download | Second Quarter 2003 Groundwater and Surface Water Monitoring Report | September 30, 2003 | 150.97 KB |
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Click to Download | First Quarter 2003 Groundwater and Surface Water Monitoring Report | June 20, 2003 | 379.25 KB |
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Click to Download | Fourth Quarter 2002 Groundwater and Surface Water Monitoring Report | March 6, 2003 | 206.54 KB |
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Click to Download | Third Quarter 2002 Groundwater and Surface Water Monitoring Report | November 15, 2002 | 242.95 KB |
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Click to Download | Second Quarter 2002 Groundwater and Surface Water Monitoring Report | August 22, 2002 | 261.2 KB |
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Click to Download | First Quarter 2002 Groundwater and Surface Water Monitoring Report | May 29, 2002 | 351.18 KB |