### 1 Regulatory Correspondence for Groundwater Monitoring Efforts at Red Hill 2009 to Present

Date Activity May 7, 2009 Navy Report Submitted to DOH: Quarterly (February 2009) Groun dwater Monitoring Report June 1, 2009 Navy Letter to DOH: Oil/W ater Interface Measur ements for May 2009 July 22, 2009 Navy Report Submitted to DOH: Quarterly (May 2009) Groundwater Monitoring Report July 22, 2009 Navy Letter to DOH: Oil/Wat er Interface Measurements for July 2009 August 25, 2009 Navy Letter to DOH: Oil/Wat er Interface Measuremen ts for August 2009
September 4, 2009 Navy Letter to City and County of Honolu lu Board of Water Su pply: Request to access Board of Water Supply wells to support a comprehensive assessment of the local and regional groundwater flow direction and gradient September 15, 2009 Navy Report Submitted to DOH: Qu arterly (July 2009) Groundwater Monitoring Report October 5, 2009 Navy Letter to DOH: Oil/Wat er Interface Measurements for September 2009 October 8, 2009 Navy Report Submitted to DOH: Quarterly (A ugust 2009) Groundwater Monitoring Report for Outside (Non-Tunnel) Wells October 30, 2009 Navy Letter to DOH: Oil/Wat er Interface Measurements for October 2009 December 1, 2009 Navy Letter to DOH: Oil/Wat er Interface Measuremen ts for November 2009 December 16, 2009 Navy Report Submitted to D OH: Groundwater Protec tion Plan Revisions December 18, 2009 Navy Letter to DOH: Oil/Wat er Interface Measurements for December 2009

December 18, 2009 Navy Report Submitted to DOH: Quarterl y (October 2009) Groundwater Monitoring Report for Outside (Non-Tunnel) Wells December 22, 2009 Navy Report Submitted to DOH: Quarterl y (October 2009) Groundwater Monitoring Report for Inside Tunnel Wells January 29, 2010 Navy Letter to DOH: Oil/W ater Interface Measurements for January 2010 February 26, 2010 Navy Letter to DOH: Oil/W ater Interface Measurements for February 2010 March 29, 2010 Navy Letter to DOH: Oil/Wat er Interface Measurements for March 2010 April 28, 2010 Navy Report Submitted to DOH: Quarterly (January 2010) Groundwater Monitoring Report for Inside Tunnel Wells April 29, 2010 Navy Report Submitted to DOH: Quarterly (January 2010) Groundwater Monitoring Report for Outside (Non-Tunnel) Wells May 5, 2010 Navy Letter to DOH: Oil/Wat er Interface Measurements for April 2010 June 11, 2010 Navy Letter to DOH: Oil/W ater Interface Measur ements for May 2010 June 11, 2010 Navy Report Submitted to DOH: Type 1 Letter Report – Re-evaluation of the Tier 3 Risk Assessment/ Groundwater Model & Proposed Course of Action June 11, 2010 Navy Report Submitted to DOH: Quarterly (April 2010) Groundwater Monitoring Report for Outside (Non-Tunnel) Wells

### 2 Regulatory Correspondence for Groundwater Monitoring Efforts at Red Hill 2009 to Present

Date Activity June 30, 2010 Navy Letter to DOH: Oil/Wat er Interface Measurements for June 2010 June 30, 2010 Navy Report Submitted to DOH: Quarterly (April 2010) Groundwater Monitoring Report for Inside Tunnel Wells August 2, 2010 Navy Letter to DOH: Oil/W ater Interface Measurements for July 2010 September 8, 2010 Navy Report Submitted to DOH: Quarterly (J uly 2010) Groundwater Monitoring Report for Outside (Non-Tunnel) Wells September 8, 2010 Navy Report Submitted to DOH: Quarterly (J uly 2010) Groundwater Monitoring Report for Inside Tunnel Wells October 4, 2010 Navy Report Submitted to DOH: Work Plan, Long-Term Monitoring October 19, 2010 Navy Report Submitted to DOH: Type 2 Letter Report – Proposal for Groundwater Treatment October 21, 2010 Navy Letter to DOH: Oil/Wat er Interface Measurements for September 2010 October 26, 2010 Navy Letter to DOH: Oil/W ater Interface Measurements for October 2010 November 29, 2010 Navy Letter to DOH: Oil/Wat er Interface Measuremen ts for November 2010

December 8, 2010 DOH Letter to Navy: Acknowledgement of recei pt of 17 documents. Concurrence that monthly free product checks and soil vapor monitoring should continue as well as quarterly groundwater monitoring of the wells within the complex. Concurrence that consideration should be given for periodic sampling of wells outside the complex. December 21, 2010 Navy Letter to DOH: Oil/Wat er Interface Measurements for December 2010 January 19, 2011 Navy Letter to DOH: Oil/W ater Interface Measurements for January 2011 February 28, 2011 Navy Letter to DOH: Oil/W ater Interface Measurements for February 2011 March 8, 2011 Navy Report Submitted to DOH: Quarterl y (October 2010) Groundwater Monitoring Report for Outside (Non-Tunnel) Wells March 10, 2011 Navy Report Submitted to DOH: Quarterly (October and November 2010) Groundwater Monitoring Report for Inside Tunnel Wells March 30, 2011 Navy Letter to DOH: Oil/Wat er Interface Measurements for March 2011 April 14, 2011 Navy Report Submitted to DOH: Quarterly (January 2011) Groundwater Monitoring Report for Outside (Non-Tunnel) Wells April 18, 2011 Navy Report Submitted to DOH: Quarterly (January 2011) Groundwater Monitoring Report for Inside Tunnel Wells April 29, 2011 Navy Letter to DOH: Oil/Wat er Interface Measurements for April 2011 May 31, 2011 Navy Letter to DOH: Oil/Wat er Interface Measurements for May 2011

### 3 Regulatory Correspondence for Groundwater Monitoring Efforts at Red Hill 2009 to Present

Date Activity June 30, 2011 Navy Letter to DOH: Oil/Wat er Interface Measurements for June 2011 July 8, 2011 Navy Report Submitted to DOH: Quarterly (April 2011) Groundwater Monitoring Report for Outside (Non-Tunnel) Wells July 8, 2011 Navy Report Submitted to DOH: Quarterly (April 2011) Groundwater Monitoring Report for Inside Tunnel Wells August 2, 2011 Navy Letter to DOH: Oil/W ater Interface Measurements for July 2011 September 1, 2011 Navy Letter to DOH: Oil/W ater Interface Measurements for August 2011 September 30, 2011 Navy Report Submitted to DOH: Quarterly (J uly 2011) Groundwater Monitoring Report for Outside (Non-Tunnel) Wells September 30, 2011 Navy Letter to DOH: Oil/Wat er Interface Measurements for September 2011 October 10, 2011 Navy Report Submitted to DOH: Quarterly (J uly 2011) Groundwater Monitoring Report for Inside Tunnel Wells November 8, 2011 Navy Letter to DOH: Oil/W ater Interface Measurements for October 2011 December 5, 2011 Navy Letter to DOH: Oil/Wat er Interface Measuremen ts for November 2011 December 28, 2011 Navy Letter to DOH: Oil/Wat er Interface Measurements for December 2011 February 1, 2012 Navy Lette r to DOH: Oil/Water Interface Measurements for January 2012 February 29, 2012 Navy Report Submitted to DOH: Quarterl y (October 2011) Groundwater Monitoring Report for Outside (Non-Tunnel) Wells March 1, 2012 Navy Letter to DOH: Oil/Wat er Interface Measuremen ts for February 2012 March 6, 2012 Navy Report Submitted to DOH: Quarterly (October and November 2011) Groundwater Monitoring Report for Inside Tunnel Wells March 26, 2012 Navy Letter to DOH: Oil/Wat er Interface Measurements for March 2012 April 11, 2012 Navy Report Submitted to DOH: Quarterly (January 2012) Groundwater Monitoring Report for Outside (Non-Tunnel Wells) April 12, 2012 Navy Report Submitted to DOH: Quarterly (January and February 2012) Groundwater Monitoring Report for Inside Tunnel Wells April 20, 2012 Navy Letter to DOH: Oil/Wat er Interface Measurements for April 2012 May 22, 2012 Navy Letter to DOH: Oil/Wat er Interface Measurements for May 2012 June 29, 2012 Navy Letter to DOH: Oil/Wat er Interface Measurements for June 2012 July 13, 2012 Navy Report Submitted to DOH: Quarterly (April 2012) Groundwater Monitoring Report for Outside (Non-Tunnel) Wells July 16, 2012 Navy Report Submitted to DOH: Quarterly (April 2012) Groundwater Monitoring Report for Inside Tunnel Wells July 17, 2012 Navy Letter to DOH: Oil/Wat er Interface Measurements for July 2012

### 4 Regulatory Correspondence for Groundwater Monitoring Efforts at Red Hill 2009 to Present

Date Activity August 24, 2012 Navy Letter to DOH: Oil/Wat er Interface Measuremen ts for August 2012 September 27, 2012 Navy Report Submitted to DOH: Quarterly (J uly 2012) Groundwater Monitoring Report for Outside (Non-Tunnel) Wells September 28, 2012 Navy Report Submitted to DOH: Quarterly (J uly 2012) Groundwater Monitoring Report for Inside Tunnel Wells October 10, 2012 DOH Letter to Navy: DOH continues to have no objection to the contingency triggers or action and time schedules regarding the Groundw ater Protection Plan (specifically Table 4-2) November 5, 2012 Navy Letter to DOH: Oil/W ater Interface Measurements for October 2012 December 4, 2012 Navy Letter to DOH: Oil/Wat er Interface Measuremen ts for November 2012 January 18, 2013 Navy Letter to DOH: Oil/W ater Interface Measurements for December 2012 January 30, 2013 Navy Report Submitted to DOH: November 2012 Groundwater Monitoring Report for Outside (Non-Tunnel) Wells February 13, 2013 Navy Letter to DOH: Oil/W ater Interface Measurements for January 2013 February 13, 2013 Navy Report Submitted to DOH: October 2012 Groundwater Monitoring Report for Inside Tunnel Wells March 12, 2013 Navy Letter to DOH: Oil/Wat er Interface Measuremen ts for February 2013 April 16, 2013 Navy Letter to DOH: Oil/Wat er Interface Measurements for March 2013 May 3, 2013 Navy Letter to DOH: Oil/Wat er Interface Measurements for April2013 May 7, 2013 Navy Report Submitted to DOH: January 2013 Groundwater Monitoring Report for Inside Tunnel Wells May 7, 2013 Navy Report Submitted to DOH: January 20 13 Groundwater Monitoring Report for Outside (Non-Tunnel) Wells June 6, 2013 Navy Letter to DOH: Oil/W ater Interface Measur ements for May 2013 July 18, 2013 Navy Letter to DOH: Oil/Wat er Interface Measurements for June 2013 July 23, 2013 Navy Report Submitted to DOH: Second Quarter 2013 – Quarterly Groundwater Monitoring Report, Outside (Non-Tunnel) Wells August 6, 2013 Navy Report Submitted to DOH: Second Quarter 2013 – Quarterly Groundwater Monitoring Report, Inside Tunnel Wells September 18, 2013 Navy Letter to DOH: Oil/W ater Interface Measurements for August 2013 October 1, 2013 Navy Report Submitted to DOH: Third Quarte r 2013 – Quarterly Groundwater Monitoring Report, Outside (Non-Tunnel) Wells October 2, 2013 Navy Report Submitted to DOH: Third Quarte r 2013 – Quarterly Groundwater Monitoring Report, Inside Tunnel Wells October 17, 2013 Navy Letter to DOH: Oil/Wat er Interface Measurements for September 2013 November 6, 2013 Navy Letter to DOH: Oil/W ater Interface Measurements for October 2013

### 5 Regulatory Correspondence for Groundwater Monitoring Efforts at Red Hill 2009 to Present

Date Activity November 27, 2013 Navy Letter to DOH: Oil/Wat er Interface Measuremen ts for November 2013 January 8, 2014 Navy Letter to DOH: Oil/Wat er Interface Measurements for December 2013 January 21, 2014 Navy Report Submitted to DOH: Fourth Quarter 2014 – Quarterly Groundwater Monitoring Report, Inside Tunnel Wells January 31, 2014 Navy Report Submitted to DOH: Fourth Quarter 2014 – Quarterly Groundwater Monitoring Report, Outside (Non-Tunnel) Wells March 7, 2014 Navy Letter to DOH: Oil/Wat er Interface Measuremen ts for February 2014 April 7, 2014 Navy Report Submitted to DOH: First Quarte r 2014 – Quarterly Groundwater Monitoring Report for Inside Tunnel Wells April 7, 2014 Navy Letter to DOH: Oil/WaterInterface Measurements for March 28, 2014 April 8, 2014 Navy Report Submitted to DOH: Groundwater Mo nitoring Report for March 5 and 6, 2014 Sampling Event April 8, 2014 Navy Report Submitted to DOH: Groundwater Monitoring Report for March 10, 2014 Sampling Event April 9, 2014 Navy Report Submitted to DOH: First Quarte r 2014 – Quarterly Groundwater Monitoring Report for Outside (Non-Tunnel) Wells April 21, 2014 Navy Letter to DOH: Oil/WaterInterface Measurements for April 7, 2014 April 22, 2014 Navy Report Submitted to DOH: Groundwater Monitoring Report for March 25 and 26, 2014 Sampling Event April 24, 2014 Navy Report Submitted to DOH: Tank 5 Initial Release Response Report May 1, 2014 Navy Letter to DOH: Oil/Water In terface Measurements for April 21 and 22, 2014 May 5, 2014 Navy Report Submitted to DOH: Groundwater Monitoring Report for April 7, 2014 Sampling Event May 14, 2014 Navy Letter to DOH: Oil/WaterInterface Measuremen ts for May 8, 2014 May 16, 2014 Navy Letter to DOH: Additional Monitoring Well Locations May 27, 2014 Navy Report Submitted to DOH: Groundwater Monitoring Report for April 23, 2014 Sampling Event (TAMC MW-2) May 28, 2014 Navy Letter to DOH: Oil/Wat er Interface Measurements for May 22, 2014 June 2, 2014 Navy Letter to DOH: Oil/Water Interface Measurements fo r May 27 and 28, 2014 June 16, 2014 Navy Letter to DOH: Oil/Wat er Interface Measuremen ts for June 10, 2014 July 7, 2014 Navy Report Submitted to DOH: Second Quarter 2014 – Quarterly Groundwater Monitoring Report for Inside Tunnel Wells July 7, 2014 Navy Report Submitted to DOH: Second Quarter 2014 – Quarterly Groundwater Monitoring Report for Outside Tunnel Wells July 7, 2014 Navy Report Submitted to DOH: Groundwater Mo nitoring Report for May 27 and 28, 2014 Sampling Event July 7, 2014 Navy Letter to DOH: Oil/Water In terface Measurements for June 23 and 24, 2014

### 6 Regulatory Correspondence for Groundwater Monitoring Efforts at Red Hill 2009 to Present

Date Activity July 16, 2014 Navy Report Submitted to DOH: TAMC MW-2 Groundwater Monitoring Report for June 23, 2014 Sampling Event July 16, 2014 Navy Letter to DOH: Draft Work Plan/ Sampling and Analysis Plan, Monitoring Well Installation July 22, 2014 Navy Report Submitted to DOH: Groundwater Mo nitoring Report for June 23 and 24, 2014 Sampling Event July 23, 2014 Navy Report Submitted to D OH: Quarterly Release Response Report August 6, 2014 Navy Letter to DOH: Oil/W ater Interface Measurements for July 2014 August 21, 2014 Navy Letter to DOH: Final Work Plan/ Sampling and Analysis Plan, Monitoring Well Installation