Correspondence Index

Environmental Protection Agency [2018] [2017] [2016] [2015] [2014] [2013] [2012] [2011] [2010] [2009] [2008] [2007] [2006] [2005] [2004] [2003] [2002] [2001] [2000] [1999] [1998] [1997] [1996] [1995] [1994] [1993]
Date	Correspondence Subject	To	From
2018
August 10, 2018	Quarterly Groundwater Monitoring Report Notification	EPA	Parsons
May 9, 2018	Quarterly Groundwater Monitoring Report Notification	EPA	Parsons
February 1, 2018	Quarterly Groundwater Monitoring Report Notification	EPA	Parsons
January 5, 2018	Approval of the RCRA CMI Report	CSSA	EPA
January 3, 2018	Submission of the Period 51 Progress Report	EPA	CSSA
2017
November 2, 2017	Quarterly Groundwater Monitoring Report Notification	EPA	Parsons
September 7, 2017	Submission of the Corrective Measures Implementation Report	EPA	CSSA
August 2, 2017	Quarterly Groundwater Monitoring Report Notification	EPA	Parsons
July 10, 2017	Submission of the Period 50 Progress Report	EPA	CSSA
May 2, 2017	Quarterly Groundwater Monitoring Report Notification	EPA	Parsons
February 2, 2017	Quarterly Groundwater Monitoring Report Notification	EPA	Parsons
January 13, 2017	PFAS Sampling Results	EPA	Parsons
January 5, 2017	Submission of the Period 49 Progress Report	EPA	CSSA
2016
November 2, 2016	Quarterly Groundwater Monitoring Report Notification	EPA	Parsons
September 28, 2016	Approval of the 2016 Construction Quality Assurance Plan	CSSA	EPA
August 16, 2016	Submission of Construction Quality Assurance Plan	EPA	CSSA
August 3, 2016	Quarterly Groundwater Monitoring Report Notification	EPA	Parsons
July 6, 2016	Submission of the Period 48 Progress Report	EPA	CSSA
May 5, 2016	EPA Approval of the 2016 DQO's/Metals Evaluation	CSSA	EPA
May 3, 2016	Quarterly Groundwater Monitoring Report Notification	EPA	Parsons
April 29, 2016	EPA Approval of the 2016 LTMO Evaluation	CSSA	EPA
January 11, 2016	Transmittal Letter for Three-Tiered Groundwater Long-Term Monitoring Optimization Evaluation	EPA	CSSA
March 11, 2016	Approval of the RCRA Corrective Measures Implementation Program Plan	CSSA	EPA
March 11, 2016	Approval of the RCRA Corrective Measures Design Report	CSSA	EPA
2015
November 24, 2015	Corrective Measures Design (CMD) Report	EPA	CSSA
November 6, 2015	Quarterly Groundwater Monitoring Report Notification	EPA	Parsons
November 5, 2015	Corrective Measures Implementation Program Plan	EPA	CSSA
August 11, 2015	Quarterly Groundwater Sampling Notification	EPA	Parsons
July 1, 2015	Submittal of the Period 46 Progress Report	EPA	CSSA
January 22, 2015	Approval of the RCRA Corrective Measures Study Report	CSSA	EPA
January 5, 2015	Transmittal Letter for Period 45 Progress Report	EPA	CSSA
2014
December 4, 2014	Approval of the Final RCRA Facility Investigation Report	CSSA	EPA
October 2, 2014	Corrective Measures Study Report	EPA	CSSA
August 14, 2014	Submission of the RCRA Facility Investigation (RFI) Report	EPA	CSSA
August 4, 2014	Quarterly Groundwater Sampling Notification	EPA	CSSA
July 25, 2014	Approval of the CSSA RFI Workplan	CSSA	EPA
July 2, 2014	Submittal of the Period 44 Progress Report	EPA	Parsons
May 1, 2014	Quarterly Groundwater Sampling Notification	EPA	Parsons
April 21, 2014	EPA Approval of the Baseline Risk Assessment	CSSA	EPA
2013
July 10, 2013	Submittal of the Period 42 Progress Report	EPA	Parsons
January 10, 2013	Submittal of the Period 41 Progress Report	EPA	Parsons
2012
August 3, 2012	Quarterly Groundwater Sampling Notification	EPA	Parsons
July 10, 2012	Submittal of the Period 40 Progress Report	EPA	Parsons
May 2, 2012	Quarterly Groundwater Sampling Notification	EPA	Parsons
February 29, 2012	Memo regarding CSSA North Pasture Fencing	CSSA	EPA
February 13, 2012	Memo on Plume Map Development	EPA	CSSA
January 3, 2012	Submittal of the Period 39 Progress Report	EPA	Parsons
2011
November 1, 2011	Quarterly Groundwater Sampling Notification	EPA	Parsons
August 4, 2011	Quarterly Groundwater Sampling Notification	EPA	Parsons
June 30, 2011	Submittal of the Period 38 Progress Report *Period 38 Progress Report	EPA	CSSA
April 27, 2011	Notification of groundwater monitoring activities	EPA	Parsons
February 16, 2011	Approval of the Three-Tiered LTMO and DQOs for the Groundwater Monitoring Program	CSSA	EPA
February 1, 2011	Quarterly Groundwater Sampling Notification	EPA	Parsons
January 10, 2011	Submittal of the Period 37 Progress Report *Period 37 Progress Report	EPA	CSSA
2010
November 23, 2010	Three-Tiered Groundwater LTMO and Data Quality Objectives for the Groundwater Monitoring Program	EPA	Parsons
November 1, 2010	December 2010 Quarterly Groundwater Sampling Notification	EPA	Parsons
January 7, 2010	Submittal of the Period 35 Progress Report *Period 35 Progress Report	EPA	CSSA
2009
July 2009	Period 34 Progress Report	EPA	CSSA
January 9, 2010	Submittal of the Period 33 Progress Report *Period 33 Progress Report	EPA	CSSA
2008
July 2008	Period 32 Progress Report	EPA	CSSA
January 2008	Period 31 Progress Report	EPA	CSSA
2007
July 5, 2007	Submittal of the Period 30 Progress Report *Period 30 Progress Report	EPA	CSSA
2006
May 1, 2006	Submittal of the 28th Quarterly Progress Report *28th Quarterly Progress Report	EPA	CSSA
January 30, 2006	Submittal of the Final Hydrogeologic Conceptual Site Model *Final Hydrogeologic Conceptual Site Model	EPA	CSSA
2005
November 4, 2005	Submittal of the 26th Quarterly Progress Report *26th Quarterly Progress Report	EPA	CSSA
August 5, 2005	Submittal of the 25^th Quarterly Progress Report *25th Quarterly Progress Report	EPA	CSSA
May 2, 2005	Submittal of the 24^th Quarterly Progress Report *24^th Quarterly Progress Report	EPA	CSSA
January 31, 2005	Submittal of the 23^rd Quarterly Progress Report *23^rd Quarterly Progress Report	EPA	CSSA
2004
August 6, 2004	TCEQ Request that EPA requires CSSA to submit a corrective action plan for long-term cleanup	EPA	TCEQ
July 23, 2004	Submittal of the 21^st Quarterly Progress Report *21^st Quarterly Progress Report	EPA	CSSA
February 18, 2004	Submittal of the Data Quality Objectives (revised November 2003) for review by EPA and TCEQ	EPA	CSSA
February 6, 2004	Submittal of the 19^th Quarterly Progress Report *19^th Quarterly Progress Report	EPA	CSSA
2003
November 10, 2003	Submittal of the 18^th Quarterly Progress Report *18^th Quarterly Progress Report	EPA	CSSA
August 11, 2003	Submittal of the 17^th Quarterly Progress Report *17^th Quarterly Progress Report	EPA	CSSA
May 13, 2003	Notification of soil sampling activities at CSSA	EPA	Parsons
March 11, 2003	Proposed management of drilling fluids to be generated on private lands	EPA	Parsons
February 10, 2003	Submittal of the 15^th Quarterly Progress Report *15^th Quarterly Progress Report	EPA	CSSA
2002
November 6, 2002	Submittal of the 14^th Quarterly Progress Report *14^thQuarterly Progress Report	EPA	CSSA
October 17, 2002	CSSA Order on Consent Deliverable Review	CSSA	EPA
August 26, 2002	Letter requesting approval to proceed in September 2002 under the provisions of the DQOs submitted April 22, 2002	EPA	Parsons
August 14, 2002	Submittal of the August 2002 Environmental Encyclopedia update documents	EPA	Parsons
August 1, 2002	Submittal of the 13^th Quarterly Progress Report *13^th Quarterly Progress Report	EPA	CSSA
June 28, 2002	Submittal of Waste Management Plan for incorporation to 3008(h) Administrative Order	EPA	CSSA
April 30, 2002	Submittal of the 12^th Quarterly Progress Report *12^th Quarterly Progress Report	EPA	CSSA
April 22, 2002	Submittal of Data Quality Objectives for review by EPA and TNRCC regulators	EPA	CSSA
2001
December 31, 2001	Environmental Encyclopedia Update to Include Revised Risk Assessment Technical Approach Document Spill Prevention, Control and Countermeasures Plan Soil Vapor Extraction Test Report for SWMU B-3	EPA	CSSA
December 26, 2001	Submittal of June 2001 Quarterly Groundwater Monitoring Report	EPA	CSSA
November 5, 2001	Submittal of 10^thQuarterly Progress Report *10^th Quarterly Progress Report	EPA	CSSA
September 20, 2001	Submittal of Final Water Well Survey Report	EPA	CSSA
August 6, 2001	Submittal of Final December 2000 and March 2001 Groundwater Monitoring Reports and Minutes from TIM #4 and TIM #5	EPA	CSSA
August 1, 2001	Submittal of the Ninth Quarterly Progress Report *Ninth Quarterly Progress Report	EPA	CSSA
June 15, 2001	Use of Well 16 Groundwater for the PIMS Demonstration Site at CSSA	CSSA	EPA
June 14, 2001	Submittal of September 5, 2000 minutes of TIM #4, under RL 74	EPA	CSSA
May 29, 2001	Environmental Encyclopedia Update, Phytoremediation Treatability Study Report	EPA	CSSA
May 10, 2001	Submittal of the Eighth Quarterly Progress Report *Eighth Quarterly Progress Report	EPA	CSSA
April 5, 2001	Environmental Encyclopedia Update, Revisions 10 and 11	EPA	CSSA
February 22, 2001	Environmental Encyclopedia Update, Revision 9	EPA	CSSA
February 15, 2001	Environmental Encyclopedia Update, Revision 8	EPA	CSSA
February 5, 2001	Submittal of Seventh Quarterly Progress Report	EPA	CSSA
2000
December 5, 2000	Second and Third Quarterly Groundwater Monitoring Event Reports	EPA	CSSA
August 15, 2000	Comments regarding RL83 SAP	CSSA/Parsons	EPA
August 3, 2000	Submittal of Fifth Quarter Progress Report, Risk Assessment Technical Approach, Cluster Well Work Plan, Building 40 Closure Plan, Soil Gas Survey Reports, and Volume 1 CD-ROM	EPA	CSSA
July 11, 2000	Authorization to proceed with IM at SWMU O-1	CSSA/Parsons	EPA
June 27, 2000	Comment regarding CSSA well completion diagram	CSSA/Parsons	EPA
June 27, 2000	Request for review of well completion design	EPA	Parsons
May 10, 2000	Submittal of Third and Fourth Quarterly Progress Reports	EPA	CSSA/Parsons ES
April 18, 2000	Third Quarter Progress Report	EPA	CSSA
February 25, 2000	Responses to EPA Comments	EPA	CSSA/Parsons ES
January 12, 2000	Approval of Explosives Variances	CSSA	EPA
January 6, 2000	Conditional approval of RFI Work Plan, IM Work Plan, and CRP, and comments	CSSA	EPA
January 5, 2000	Submittal of RFI Rework Work Plan	EPA	CSSA/Parsons ES
1999
November 10, 1999	Submittal of Second Quarterly Progress Report	EPA	CSSA/Parsons ES
October 19, 1999	Notification of Investigation Activities	EPA	Parsons ES
October 13, 1999	Request for approval of explosives analyses variances	EPA	Parsons ES
September 1, 1999	Submittal of RFI Work Plan, IM Work Plan, and CRP	EPA	CSSA/Parsons ES
August 25, 1999	Notification of Investigation Activities: Groundwater Sampling	EPA	Parsons ES
July 30, 1999	Submittal of Description of Current Conditions Report, Quarterly Progress Report, and Environmental Encyclopedia	EPA	Parsons ES
July 12, 1999	Notification of Investigation Activities: Geophysical Surveys at AOCs 47, 48, 56, 58, and 61	EPA	Parsons ES
1998
1997
August 12, 1997	NPDES Discharge monitoring report	EPA	Parsons ES
January 23, 1997	Amendment to Project Plans for Remedial Investigation at B-20	EPA	Parsons ES
1996
May 21, 1996	Submittal of Consent Decree and Consent Order (See Volume 6-2.2, Correspondence)	CSSA	EPA
February 29, 1996	Work Plan and Sample Analysis Plan For Closure of SWMUs	EPA	Parsons ES
February 7, 1996	Sampling Plan for Evaluation of Background Level in Soil Types	EPA	Parsons ES
1995
December 6, 1995	Amendment to Partial Facility Closure Plan, B-20	EPA	Parsons ES
December 1, 1995	Request for response to October 26, 1995 plans of actions for the groundwater evaluation and the B-20 closure project	EPA	Parsons ES
October 31, 1995	Plans of action for the former B-20 OB/OD unit closure and the groundwater evaluation	EPA	Parsons ES
March 15, 1995	Approval of 2nd Time Extension for Revising B-20 Plan for Closure (See Volume 6-2.2, Correspondence)	CSSA	EPA
February 1, 1995	Notification of UXO located during B-20 remedial investigation (See also Volume 6-2.2, Correspondence)	EPA	CSSA
February 1, 1995	Notification of additional non-invasive tasks for investigation at Well 16 (See Volume 6-2.2, Correspondence)	EPA	CSSA
February 1, 1995	UXO work at B-20	EPA	CSSA
February 1, 1995	Liquid Filled Ampoules At B-23	EPA	CSSA
1994
March 7, 1994	Request for Extension of time for revision to closure plan (See Volume 6-2.2, Correspondence)	EPA	CSSA
January 13, 1994	Approval of request for a time extension for revision of the closure plan for the B-20 OB/OD unit	CSSA	EPA
1993
December 21, 1993	Approval of request for a time extension for revision of the closure plan for the B-20 OB/OD unit	CSSA	EPA
November 8, 1993	Comments Regarding Partial Facility Closure for B-20 (See Volume 6-2.2, Correspondence)	CSSA	EPA
November 3, 1993	Statistical Basis for Sampling, B-20 OB/OD (See Volume 6-2.2, Correspondence)	CSSA	EPA
August 5, 1993	Nomination of independent audit firm to perform and environmental audit at CSSA	EPA	CSSA
August 4, 1993	Answer re: RCRA Docket No. VI-310-H (See Volume 6-2.2, Correspondence)	EPA	CSSA
June 30, 1993	Compliant, Compliance Order, and Notice of Opportunity Hearing	CSSA	EPA
May 18, 1993	Comments to Sampling and Analysis Plan, Hydrogeologic Report and Work Plan for Groundwater Contamination (See Volume 6-2.2, Correspondence)	CSSA	EPA
USEPA Administrative RCRA 3008(h) order on consent
May 4, 1999	Final RCRA 3008(h) Order	CSSA	EPA
August 27, 1998	Draft RCRA 3008(h) Order	CSSA	EPA
Texas Commission on Environmental Quality (formerly known as Texas Natural Resource Conservation Commission) [2018][2017] [2016] [2015] [2014] [2013] [2012] [2011] [2010] [2009] [2008] [2007] [2006] [2005] [2004] [2003] [2002] [2001] [2000] [1999] [1998] [1997] [1996] [1995] [1994] [1993] [1987] [Top of Page]
Date	Correspondence Subject	To	From
2018
June 7, 2018	Approval of the AOC-76 Release Investigation Report	CSSA	TCEQ
2017
November 17, 2017	Technical NOD Information Request	TCEQ	CSSA
October 30, 2017	Decision Regarding Amendment of Class V Injection Well Authorization and Closure of Class V Injection Well Authorization	CSSA	TCEQ
June 21, 2017	Submission of the AOC-65 Class Remediation Infiltration Galleries and Injection Wells	TCEQ	CSSA
June 21, 2017	Submission of the Annual Status Report of the Pilot Study Class V Aquifer Remediation Injection Wells	TCEQ	CSSA
2016
July 6, 2016	Submission of the Annual Status Report of the Pilot Study Class V Aquifer Remediation Injection Wells	TCEQ	CSSA
May 22, 2016	Revision to a Class V Injection Well Authorization	CSSA	TCEQ
April 22, 2016	Report Review Letter -- Approval of Documents	CSSA	TCEQ
2015
December 8, 2015	Notification of Plugging and Abandonment of Inactive Wells CS-9 and CS-11	TCEQ	CSSA
November 24, 2015	Semiannual Status Report (June 2015 to December 2015) of the Pilot Study Class V Aquifer Remediation Injection Wells	TCEQ	CSSA
June 9, 2015	Approval of the Amendment to the Class V Injection Wells Request	Parsons	TCEQ
2014
November 12, 2014	Approval of RFI Report, dated August 2013; and CMS Report, dated October 2014	CSSA	TCEQ
September 3, 2014	TCEQ Request for Class V Injection Well Authorization Update	TCEQ	CSSA
August 11, 2014	Approval of RCRA Facility Investigation Work Plan (dated April 11, 2014) and Progress Report (January 1 - June 30, 2014)	CSSA	TCEQ
April 22, 2014	Approval of Site-Specific Closure Report - SWMU B-34	CSSA	TCEQ
April 17, 2014	Concurrence of Integrated Cultural Resources Management Plan	CSSA	Texas Historial Commission
April 14, 2014	Approval of Progress Report - January 2014	CSSA	TCEQ
February 5, 2014	Approval of Release Investigation Report - RMU-4	CSSA	TCEQ
January 21, 2014	Site-Specific Closure Report - SWMU-34	TCEQ	CSSA
2013
November 8, 2013	Approval of Release Investigation Report - AOC-75	CSSA	TCEQ
October 24, 2013	Release Investigation Report - RMU-4	CSSA	TCEQ
September 12, 2013	Approval of Release Investigation Report - RMU-3	CSSA	TCEQ
August 2, 2013	Release Investigation Report - AOC-75	TCEQ	CSSA
July 17, 2013	Annual Status Report of the Pilot Study Class V Aquifer Remediation Wells at CSSA	TCEQ	CSSA
July 9, 2013	Approval of Release Investigation Report - SWMU B-13	CSSA	TCEQ
May 9, 2013	Release Investigation Report - RMU-3	TCEQ	CSSA
April 26, 2013	Amendment of Class V Authorization	CSSA	TCEQ
April 15, 2013	Release Investigation Report - SWMU B-13	TCEQ	CSSA
March 29, 2013	Request to Modify Authorization and Registration of Class V Injection Wells	TCEQ	Parsons
March 23, 2013	Approval - Progress Report for July 1 - December 31, 2012	CSSA	TCEQ
February 7, 2013	Approval - Final Affected Property Assessment Report for SWMU B-4	CSSA	TCEQ
2012
October 15, 2012	Approval of Release Investigation Report - AOC-51	CSSA	TCEQ
September 20, 2012	Approval of Release Investigation Report - RMU-5	CSSA	TCEQ
September 7, 2012	*Transmittal of As-Built Drawings Documenting Components Used for an In Situ* Chemical Oxidation Pilot Study Located at AOC-65**	TCEQ	Parsons
July 20, 2012	Release Investigation Report - AOC 51	TCEQ	CSSA
June 15, 2012	Release Investigation Report - Range Management Unit 5	TCEQ	CSSA
May 24, 2012	Approval of Closure Report - Wastewater Treatment Plant	CSSA	TCEQ
May 18,2012	Approval of Closure Report - AOC-72	CSSA	TCEQ
May 8, 2012	Approval of Closure Report - AOC-74	CSSA	TCEQ
March 21, 2012	Release Investigation Report - Wastewater Treatment Plant	TCEQ	CSSA
March 13, 2012	Authorization and Registration of Class V Injection Wells	CSSA	TCEQ
March 5, 2012	Release Investigation Report - AOC 72	TCEQ	CSSA
February 17, 2012	Amendment to Class V Authorization Letter	CSSA	TCEQ
February 14, 2012	Approval - Release Investigation Report for RMU-2	CSSA	TCEQ
February 14, 2012	Release Investigation Report - AOC 74	TCEQ	CSSA
January 10, 2012	Cancellation of Permit No.WQ0003849000 (EPA I.D. No. TX0064505) (CN600126262)	CSSA	TCEQ
2011
December 29, 2011	Approval - Release Investigation Report - SWMU B-27	CSSA	TCEQ
December 16, 2011	Approval - Release Investigation Report - AOCs 42, 52, 58, and 62	CSSA	TCEQ
December 7, 2011	Biannual Status Report of the Pilot Study Class V Aquifer Remediation Injection Wells at CSSA	TCEQ	CSSA
November 18, 2011	Release Investigation Report - RMU-2	TCEQ	CSSA
November 17, 2011	Approval - Release Investigation Report - SWMU B-28	CSSA	TCEQ
November 3, 2011	PWS CS-12 Iron and Aluminum Issue	TCEQ	CSSA
October 17, 2011	Re: Affected Property Assessment Report for AOC 64 and SWMU B-71	TCEQ	CSSA
October 12, 2011	Re: Approval - Release Investigation Report - AOC 45	CSSA	TCEQ
October 12, 2011	Re: Approval - Release Investigation Report - AOC 59	CSSA	TCEQ
September 30, 2011	Release Investigation Report - SWMU B-27	TCEQ	CSSA
September 21, 2011	Re: Approval - Release Investigation Report - AOC 70	CSSA	TCEQ
September 13, 2011	Re: Approval - Release Investigation Report - AOC 57	CSSA	TCEQ
September 13, 2011	Approval - Progress Report , January 1 - June 30, 2011	CSSA	TCEQ
September 9, 2011	Release Investigation Report - AOCs 42, 52, 58, and 62	TCEQ	Parsons
September 7, 2011	Approval - Release Investigation Report - SWMU B-15/16	CSSA	TCEQ
June 29, 2011	Release Investigation Report - AOC 57	TCEQ	Parsons
June 26, 2011	Approval - Well CS-12 Temporary-Interim Use	Parsons	TCEQ
June 7, 2011	Release Investigation Report - AOC 70	CSSA	TCEQ
June 6, 2011	Release Investigation Report - SWMU B 15/16	CSSA	TCEQ
May 27, 2011	Biannual Status Report of the Pilot Study Class V Aquifer Remediation Injection Wells at CSSA	CSSA	TCEQ
March 22, 2011	Re: Approval - "Three_Tiered Long Term Monitoring Network Optimization Evaluation and Data Quality Objectives for the Groundwater Monitoring Program", dated November 23, 2011	CSSA	TCEQ
2010
December 9, 2010	Biannual Status Report of the Pilot Study Class V Aquifer Remediation Injection Wells at CSSA	TCEQ	CSSA
December 3, 2010	Movement of Non-Hazardous Metlas Impacted Soils from SWMU/AOC Closure Efforts to East Pasture Firing Range	TCEQ	CSSA
September 29, 2010	Closure of AOCs No. 67 and 68 - Approval	CSSA	TCEQ
August 12, 2010	Affected Property Assessment Report for AOC 63 - Approval	CSSA	TCEQ
2009
October 9, 2009	Closure of AOC 69 - Approval	CSSA	TCEQ
July 31, 2009	Affected Property Assessment Report for AOC-63	TCEQ	CSSA
June 15, 2009	Biannual Status Report of the Pilot Study Class V Aquifer Remediation Injection Wells at CSSA	TCEQ	CSSA
May 27, 2009	Response to Request for Additional Information: Affected Property Assessment Report (APAR) for AOC 63 *Enclosure: Letter to Weston Solutions dated April 23, 2009*	TCEQ	CSSA
February 26, 2009	Request for Additional Information, Affected Properly Assessment Report, AOC-63 *Enclosure: TCEQ Interoffice Memo, Review Comments, February 5, 2009*	TCEQ	CSSA
January 9, 2009	Closure of Area of Concern No. 73 - Approval	CSSA	TCEQ
2008
December 29, 2008	Proposed Well No. CS-12 and As-Built Distribution System - Approval for Construction	TCEQ	Parsons
December 3, 2008	Biannual Status Report (Month 13 - Month 18: May, 2008 - October, 2008) of the Pilot Study Class V Aquifer Remediation	TCEQ	CSSA
November 7, 2008	Approval of Closure of SWMU I-1	TCEQ	CSSA
September 30, 2008	Release Investigation Report - AOC 73	TCEQ	Parsons
September 4, 2008	Request for Emergency Treatment Modification in Wastewater Treatment Operations	TCEQ	CSSA
July 31, 2008	Amendment to Authorization of Class V Aquifer Remediation Injection Wells	TCEQ	CSSA
June 26, 2008	Approval of closure of AOC-55	TCEQ	CSSA
May 15, 2008	Response to request for additional information on AOC 55	TCEQ	CSSA
May 9, 2008	Monthly Status Report (Month 11 - March 2008) of the Pilot Study Class V Aquifer Remediation Injection Wells at CSSA	TCEQ	CSSA
May 7, 2008	Re: Letter Dated April 24,2008 - Approval	CSSA
April 24, 2008	Movement of Non-Hazardous Lead Impacted Soils from SWMU B-8 to East Pasture Firing Range	TCEQ	CSSA
April 24, 2008	Request for Reduction of Data Collection and Reporting Requirements for the Pilot Study Class V Aquifer Remediation Injection Wells at CSSA	TCEQ	CSSA
April 21, 2008	Monthly Status Report (Month 10 - February 2008) of the Pilot Study Class V Aquifer Remediation Injection Wells at CSSA	TCEQ	CSSA
April 4, 2008	Monthly Status Report (Quarter 3, Month 9 - January 2008) of the Pilot Study Class V Aquifer Remediation Injection Wells at CSSA	TCEQ	CSSA
February 28, 2008	Re: Letter Dated October 18, 2007 Pertaining to SWMU B-29 - Approval	CSSA
February 28, 2008	Re: Letter Dated October 18, 2007 Pertaining to SWMU B-14 and Coal Bin Area - Approval	CSSA
February 21, 2008	Monthly Status Report (Month 8 - December 2007) of the Pilot Study Class V Aquifer Remediation Injection Wells at CSSA	TCEQ	CSSA
January 10, 2008	Monthly Status Report (Month 7 - November 2007) of the Pilot Study Class V Aquifer Remediation Injection Wells at CSSA	TCEQ	CSSA
2007
December 7, 2007	Quarterly Status Report (Quarter 2, Month 6 - October 2007) of the Pilot Study Class V Aquifer Remediation Injection Wells at CSSA	TCEQ	CSSA
October 26, 2007	Monthly Status Report (Month 5 - September 2007) of the Pilot Study Class V Aquifer Remediation Injection Wells	TCEQ	CSSA
October 18, 2007	Request for Approval of Closure of AOC-55	TCEQ	CSSA
October 18, 2007	Removal of Solid Waste Management Units (SWMUs) B-14 Area and Coal Bins from the Installation SWMU List	TCEQ	CSSA
October 18, 2007	CSSA Response to TCEQ Request for More Information, SWMU B-29	TCEQ	CSSA
October 18, 2007	Self-Reporting of an Exceedance for Monthly Daily Flow Average Permit Limit	TCEQ	CSSA
October 4, 2007	Self-Reporting of an Exceedance for Monthly Daily Flow Average Permit Limit	TCEQ	CSSA
September 28, 2007	Monthly Status Report of the Pilot Study Class V Aquifer Remediation Injection Wells	TCEQ	CSSA
August 27, 2007	Quarterly Status Report of the Pilot Study Class V Aquifer Remediation	TCEQ	CSSA
August 24, 2007	Response to Comprehensive Compliance Investigation #556833 Findings	TCEQ	CSSA
August 16, 2007	Rehabilitation of Groundwater Supply Wells CS-9 and -10	TCEQ	CSSA
August 7, 2007	Self-Reporting of an Exceedance for Monthly Daily Flow Average Permit Limit	TCEQ	CSSA
June 21, 2007	Self-Reporting of an Exceedance for Monthly Daily Flow Average Permit Limit	TCEQ	CSSA
May 9, 2007	Approval of the On-Post and Off-Post Monitoring Reports for June and September 2006	CSSA	TCEQ
April 13, 2007	Self-Reporting of an Exceedance for Monthly Daily Flow Average Permit Limit	TCEQ	CSSA
February 2, 2007	Proposed Disinfection Modifications - Well Nos. CS-1, CS-9, and CS-10	Parsons	TCEQ
February 26, 2007	Final Solid Waste Management Unit B-3 Construction Report,	TCEQ	CSSA
January 5, 2007	Notice of Supplementary Reconditioning of Production Well CS-9	TCEQ	CSSA
2006
December 21, 2006	Quarterly Status Report of the Pilot Study Class V Aquifer Remediation Substrate Injection Well Activities	TCEQ	CSSA
December 19, 2006	TCEQ Approval of Final Data Quality Objectives (DQO) Groundwater Monitoring Program	CSSA	TCEQ
December 5, 2006	TCEQ Approval of August 2006 On-Post and Off-Post Monitoring Reports	CSSA	TCEQ
October 10, 2006	Environmental Site Assessment for Road Construction - Approval	CSSA	TCEQ
September 5, 2006	Draft Quarterly Status Report of the Pilot Study Class V Aquifer Remediation Substrate Infection Well Activities atCSSA	TCEQ	CSSA
August 28, 2006	TCEQ Approval of the RFI and Interim Measures Waste Management Plan	CSSA	TCEQ
August 22, 2006	TCEQ Approval of September 2005 Off-Post Groundwater Monitoring Report	CSSA	TCEQ
August 21, 2006	TCEQ Approval of December 2005 Off-Post Groundwater Monitoring Report	CSSA	TCEQ
August 18, 2006	TCEQ Approval of September 2005 On-Post Groundwater Monitoring Report	CSSA	TCEQ
July 19, 2006	Permit By Rule Modification Addendum Notification for SWMU B-3	TCEQ	CSSA
July 17, 2006	Request for Approval of Calcium Hypochlorite Tablet Disinfection Systems	TCEQ	Parsons
June 12, 2006	Permit By Rule Modification Notification for SWMU B-3	TCEQ	CSSA
June 6, 2006	Road Construction Environmental Assessment Requirements - Proceed	CSSA	TCEQ
June 1, 2006	Hydrogeologic Conceptual Site Model - Approval	CSSA	TCEQ
May 19, 2006	Revised RFI and Interim Measures Waste Management Plan	TCEQ	CSSA
May 4, 2006	CSSA Request for Information on Review of Road Construction Environmental Assessment	TCEQ, Austin	CSSA
May 4, 2006	CSSA Request for Information on Review of Road Construction Environmental Assessment	TCEQ, San Antonio Regional	CSSA
April 14, 2006	TCEQ Approval of June 2005 Off-post Groundwater Monitoring Report	CSSA	TCEQ
April 14, 2006	TCEQ Approval of June 2005 On-post Groundwater Monitoring Report	CSSA	TCEQ
April 10, 2006	Rehabilitation of Water Production Wells 9 and 10	CSSA	TCEQ
January 30, 2006	Waste Classification of Groundwater for Class V Injection Well Inventory Authorization	TCEQ	CSSA
January 26, 2006	Building 40 less than 90-day Container Storage Area NOR 001; Approval of Closure to RRS No. 1	CSSA	TCEQ
2005
December 19, 2005	Three-Tiered Long Term Monitoring Network Optimization Evaluation - Approval with Modification	CSSA	TCEQ
November 15, 2006	Off-Post Monitoring Report for March 2005 - Approval	CSSA	TCEQ
November 08, 2005	TCEQ approval of implementation of LTMO recommendations for December 2005 only, pending further TCEQ review	CSSA	TCEQ
October 20, 2005	TCEQ Approval of March 2005 On-post Quarterly Groundwater Monitoring Report	TCEQ	CSSA
October 11, 2005	Submittal of Building 40 Analytical Results	CSSA	TCEQ
September 26, 2005	Request to Implement LTMO Recommendations for Groundwater Monitoring at CSSA	CSSA	TCEQ
September 19, 2005	CSSA Response to Compliance Evaluation Inspection on July 5-6, 2005	CSSA	TCEQ
September 12, 2005	TCEQ Approval of the December 2004 On-post Quarterly Groundwater Monitoring Report	TCEQ	CSSA
September 12, 2005	TCEQ Approval of the December 2004 Off-post Quarterly Groundwater Monitoring Report	TCEQ	CSSA
September 12, 2005	TCEQ Approval of the June 2004 On-post Quarterly Groundwater Monitoring Report	TCEQ	CSSA
September 9, 2005	CSSA request for Section 106 review regarding renovations to Building 1, 41, and 47	CSSA	TCEQ
August 25, 2005	CSSA submittal of 25th Quarterly Progress Report *25th Quarterly Progress Report	CSSA	TCEQ
August 24, 2005	TCEQ Approval of Building 43 RRS1 Closure	TCEQ	CSSA
August 12, 2005	TCEQ Compliance Evaluation Inspection Summary of Investigation Findings	TCEQ	CSSA
August 12, 2005	CSSA Submittal of Renewal Operating Permit Application	CSSA	TCEQ
July 22, 2005	TCEQ Approval of RRS1 Closure for SWMU B-12, B-23, B-25, AOC 46 and AOC 53	CSSA	TCEQ
July 20, 2005	TCEQ Approval of Delisting and No Further Action for AOC 41, 44, 49 and 60	CSSA	TCEQ
June 21, 2005	Submittal of the Final March 2005 Off-Post Groundwater Monitoring Report *March 2005 Off-post Groundwater Monitoring Report	Parsons	TCEQ
June 17, 2005	TCEQ Approval of September 2004 On-Post Groundwater Monitoring	CSSA	TCEQ
June 17, 2005	TCEQ Approval of September 2004 Off-Post Groundwater Monitoring	CSSA	TCEQ
June 10, 2005	Request for Additional Information, SWMU B-29	CSSA	TCEQ
May 11, 2005	Submittal of Final December 2004 On-Post and Final December 2004 Off-Post Quarterly Groundwater Monitoring Reports December 2004 Off-post Groundwater Monitoring Report December 2004 On-post Groundwater Monitoring Report	Parsons	TCEQ
April 26, 2005	TCEQ Response to CSSA Letter of March 24, 2005 Concerning the Final June 2004 On-Post Quarterly Monitoring Report	CSSA	TCEQ
April 25, 2005	CSSA Submittal of AOC 49 Closure Report	TCEQ	CSSA
April 25, 2005	CSSA Submittal of SWMU B-23 Closure Report	TCEQ	CSSA
April 25, 2005	CSSA Submittal of AOC 41 Closure Report	TCEQ	CSSA
April 25, 2005	CSSA Submittal of SWMU B-23 Closure Report	TCEQ	CSSA
April 25, 2005	CSSA Submittal of AOC 46 Closure Report	TCEQ	CSSA
April 25, 2005	CSSA Submittal of AOC 53 Closure Report	TCEQ	CSSA
April 25, 2005	CSSA Submittal of SWMU Building 43 Closure Report	TCEQ	CSSA
April 25, 2005	CSSA Submittal of SWMU B-25 Closure Report	TCEQ	CSSA
April 25, 2005	CSSA Submittal of AOC 44 Delisting Report	TCEQ	CSSA
April 25, 2005	CSSA Submittal of SWMU B-12 Closure Report	TCEQ	CSSA
April 22, 2005	CSSA Submittal of Final RFI Closure Report for SWMU B-12 * Final RFI Closure Report for SWMU B-12	CSSA	TCEQ
April 20, 2005	Remediation of Solid Waste Management Unit Demolition Dud Area According to Risk Reduction Standard No. 1 - Approval	CSSA	TCEQ
April 19, 2005	TCEQ Approval of AOC 50 Closure	CSSA	TCEQ
April 11, 2005	TCEQ Response to Letter Dated January 7, 2005, Monitor Well Install Reports - approval	CSSA	TCEQ
March 31, 2005	TCEQ comments to response letter dated December 28, 2004 letter regarding the RFI & Interim Measures Waste Management Plan	CSSA	TCEQ
March 24, 2005	TCEQ response to letter dated December 28, 2004 - AOC 55 Closure	CSSA	TCEQ
March 24, 2005	TCEQ response to CSSA letter dated December 27, 2004 - SWMU B-23A	CSSA	TCEQ
March 24, 2005	TCEQ acceptance of June 2004 Off-post Quarterly Groundwater Monitoring Report	CSSA	TCEQ
March 24, 2005	TCEQ approval of the Final June 2004 Off-post Quarterly Monitoring Report	CSSA	TCEQ
March 24, 2005	TCEQ conditional approval of the Final June 2004 On-post Quarterly Monitoring Report	CSSA	TCEQ
March 24, 2005	TCEQ response to CSSA letter of December 28, 2004, regarding additional information on AOC-55 Closure Report	CSSA	TCEQ
March 24, 2005	TCEQ approval regarding SWMU B-23A, RRS No. 1	CSSA	TCEQ
February 22, 2005	TCEQ Permit 29466 renewal notification	CSSA	TCEQ
February 16, 2005	CSSA Final RFI Closure Report SWMU B-29	TCEQ	CSSA
February 15, 2005	TCEQ SWMU B-30 closure approval to RRS No. 1	CSSA	TCEQ
February 15, 2005	TCEQ AOC 38 closure approval to RRS No. 1	CSSA	TCEQ
February 10, 2005	TCEQ approval for no further action, AOC 66	CSSA	TCEQ
February 9, 2005	Parsons submittal of September 2004 On- and Off-post Quarterly Groundwater Monitoring Reports	TCEQ	Parsons
January 20, 2005	CSSA submittal of AOC 50 Closure Report	TCEQ	CSSA
January 20, 2005	CSSA submittal of SWMU DD Closure Report	TCEQ	CSSA
January 12, 2005	TCEQ approval of AOC 37 no further action	CSSA	TCEQ
January 7, 2005	CSSA response to TCEQ request for additional information on the Final Well Installation Report	TCEQ	CSSA
January 4, 2005	TCEQ approval of March 2004 On-post Quarterly Groundwater Monitoring Report	CSSA	TCEQ
200 4
December 28, 2004	CSSA response to TCEQ comments on the RFI and Interim Measures Waste Management Plan	TCEQ	CSSA
December 28, 2004	CSSA response to TCEQ request for additional information on AOC-55 Closure Report	TCEQ	CSSA
December 27, 2004	CSSA response to TCEQ letter of November 17, 2004, requesting additional information on SWMU B-23A Closure Report	TCEQ	CSSA
December 2, 2004	TCEQ approval of the Final June 2003 Off-post Quarterly Groundwater Monitoring Report	CSSA	TCEQ
November 18, 2004	TCEQ request for additional information for AOC-55 Closure Report	CSSA	TCEQ
November 17, 2004	TCEQ request for additional information for SWMU B-23A Closure Report	CSSA	TCEQ
November 16, 2004	Approval of closure report for AOC-54	CSSA	TCEQ
November 16, 2004	TCEQ approval of closure for SWMU B-33	CSSA	TCEQ
November 15, 2004	TCEQ approval to delist AOC-48 from AOC	CSSA	TCEQ
November 15, 2004	TCEQ approval to delist SWMU B-26 from the SWMUs	CSSA	TCEQ
November 5, 2004	TCEQ request for additional information concerning the Final Well Installation Report for TO0042 dated August 2004	CSSA	TCEQ
October 28, 2004	TCEQ comments to RFI and Interim Measures Waste Management Plan dated August 2002	CSSA	TCEQ
October 7, 2004	CSSA Reponse to September 9, 2004, TCEQ letter requesting additional sampling at AOC-37	TCEQ	CSSA
September 16, 2004	CSSA Response to July 21, 2004, TCEQ letter requesting Building 40 rinsate sampling	TCEQ	CSSA
September 13, 2004	Submittal of Closure Report for AOC-38	TCEQ	CSSA
September 9, 2004	Approval of Closure Report for SWMU B-11	CSSA	TCEQ
September 9, 2004	Approval of Closure Report for AOC-56	CSSA	TCEQ
September 2, 2004	Submittal of Closure Report for SWMU B-30	TCEQ	CSSA
September 1, 2004	CSSA Response to August 19, 2004, TCEQ letter concerning June 2003 Off-post Monitoring Report	TCEQ	CSSA
August 19, 2004	TCEQ Response to May 19, 2004, CSSA letter submitting additional information on the June 2003 Off-post Monitoring Report	CSSA	TCEQ
August 13, 2004	Texas Historical Commission letter to CSSA permitting development of a Memorandum of Agreement permitting demolition of Building 43	CSSA	Texas Historical Commission
August 12, 2004	CSSA Response to request for additional information on AOC 55	TCEQ	CSSA
July 21, 2004	TCEQ Request for additional information on the Building 40 less than 90-day Container Storage Area	CSSA	TCEQ
July 16, 2004	CSSA Response to CEI conducted March 30, 2004	TCEQ	CSSA
July 8, 2004	TCEQ request for additional information regarding AOC-55 RFI/Closure Report	CSSA	TCEQ
June 17, 2004	TCEQ acceptance of compliance documentation (March and April calibration records) submitted in response to the April 14, 2004, Notice of Violation	CSSA	TCEQ
June 11, 2004	TCEQ approval of the Final September 2003 Off-Post Quarterly Groundwater Monitoring Report	CSSA	TCEQ
June 11, 2004	TCEQ approval of the Final September 2003 On-Post Quarterly Groundwater Monitoring Report	CSSA	TCEQ
June 7, 2004	TCEQ Compliance Evaluation Inspection conducted March 30, 2004, summary of findings	CSSA	TCEQ
May 19, 2004	Response to TCEQ letter dated March 24, 2004, concerning June 2003 Off-Post Groundwater Monitoring Report	TCEQ	CSSA
May 17, 2004	TCEQ approval of RRS1 closure for SWMU B-8	CSSA	TCEQ
May 14, 2004	Self-reporting for Exceedance of Monthly Daily Flow Average Permit Limit at Outfall 001	TCEQ	CSSA
May 14, 2004	Response to TCEQ letter dated March 25, 2004, concerning LPST ID No. 101264	TCEQ	CSSA
May 10, 2004	Submittal of weekly calibration records in response to TCEQ Notice of Violation dated April 14, 2004	TCEQ	CSSA
April 20, 2004	CSSA response to January 5, 2004, SWMU Bldg. 90 less than 90-day Container Storage Area Closure Report and submittal of additional information	TCEQ	CSSA
April 20, 2004	TCEQ approval of the Data Quality Objectives Groundwater Contamination Investigation	CSSA	TCEQ
March 9, 2004	TCEQ Approval for SWMU B-3 Soil Vapor Extraction	CSSA	TCEQ
February 23, 2004	TCEQ Request for additional information on the Building 40 Closure Report (TCEQ cannot approval closure due to two listed deficiences)	CSSA	TCEQ
February 23, 2004	TCEQ Approval of the Final March 2003 On-post Quarterly Groundwater Monitoring Report	CSSA	TCEQ
January 29, 2004	TCEQ Conditional Approval for Final March 2003 On-Post Quarterly Groundwater Monitoring Report	CSSA	TCEQ
January 28, 2004	TCEQ Approval for AOC-65 Report Recommendation	CSSA	TCEQ
January 7, 2004	TCEQ approval of RRS1 closure for SWMU B-10 RFI/Closure Report (May 2003)*	CSSA	TCEQ
January 6, 2004	Response to letter dated September 24, 2003 - Approval	CSSA	TCEQ
January 5, 2004	TCEQ approval of RRS1 closure for SWMU Bldg. 40 *Final Partial Closure for Building 40 Certification Report (September 2003)	CSSA	TCEQ
200 3
December 23, 2003	TCEQ Approval for Final Well Installation Report, Wells CS-MW3 - CS-MW10	TCEQ	CSSA
December 22, 2003	TCEQ Approval for Final SWMU B-34 RFI Addendum	TCEQ	CSSA
November 25, 2003	TCEQ approval of RRS1 closure for SWMU B-32 *RFI/Closure Report (January 2003)	CSSA	TCEQ
November 4, 2003	Approval of the March 2003 Off-post Quarterly GWM Report	CSSA	TCEQ
October 16, 2003	Response to TCEQ letter dated August 2003 regarding closure of SWMU B-10	TCEQ	CSSQ
September 26, 2003	Submittal of Closure Report for SWMU Bldg. 40	CSSA	TCEQ
September 24, 2003	Response to TCEQ request for additional information concerning off-post quarterly groundwater monitoring program	TCEQ	CSSA
September 5, 2003	Response to TCEQ letter dated August 15, 2003, concerning SWMU B-32 Closure	TCEQ	CSSA
August 21, 2003	Response to letter of LTC Jason Shirley dated July 31, 2003	CSSA	TCEQ
August 20, 2003	Solid Waste Management Unit B-10, request for additional information	CSSA	TCEQ
August 15, 2003	TCEQ response to CSSA information submitted May 6, 2003, concerning closure at SWMU B-32 under RRS No.2	CSSA	TCEQ
July 31, 2003	Approval of the December 2002 On-post Quarterly Groundwater Monitoring Report	CSSA	TCEQ
July 31, 2003	Response to TCEQ letter dated May 8, 2003, concerning perchlorate screening	TCEQ	CSSA
July 30, 2003	TCEQ approval of December 2002 Off-Post Quarterly Groundwater Monitoring Report with request for additional information concerning laboratory analyses of VOCs only	CSSA	TCEQ
July 17, 2003	Compliance Evaluation Investigation	CSSA	TCEQ
July 2, 2003	Response to TCEQ request for additional information concerning field blank and laboratory blank samples in the TCEQ letter dated May 7, 2003	TCEQ	CSSA
June 13, 2003	Request for additional soil boring at LPST ID#101264, CSSA	CSSA	TCEQ
May 30, 2003	Submittal of Closure Report for SWMU B-10	TCEQ	CSSA
May 13, 2003	Response to TCEQ Request for additional information regarding the SWMU B-32 Closure Report	TCEQ	CSSA
May 8, 2003	Transmittal of InterOffice Memorandum concerning Site Inspection and Visit of April 29, 2003	CSSA	TCEQ
May 7, 2003	TCEQ approval of September 2002 Off-post Groundwater Monitoring Report with suggestion to collect field and laboratory blank samples	CSSA	TCEQ
May 6, 2003	Request for additional information regarding SWMU B-32 Closure Report	CSSA	TCEQ
May 6, 2003	TCEQ approval of September 2002 On-post Groundwater Monitoring Report	CSSA	TCEQ
April 2, 2003	Submittal of Closure Report for SWMU B-9, copy of SWMU B-9 closure letter, and CD-ROM of CSSA�s Environmental Encyclopedia	Parsons	TCEQ
February 20, 2003	TCEQ approval of RRS1 closure of SWMU B-9 * RFI Closure Report (July 2002)	<