{"id":63,"date":"2021-06-29T22:00:10","date_gmt":"2021-06-29T22:00:10","guid":{"rendered":"https:\/\/www.env.nm.gov\/hazardous-waste\/?page_id=63"},"modified":"2022-08-26T19:48:50","modified_gmt":"2022-08-26T19:48:50","slug":"chromium-groundwater-contamination","status":"publish","type":"page","link":"https:\/\/www.env.nm.gov\/hazardous-waste\/chromium-groundwater-contamination\/","title":{"rendered":"LANL Chromium Groundwater Contamination"},"content":{"rendered":"\n

Los<\/strong> Alamos National Laboratory (LANL)<\/strong><\/p>\n\n\n\n

Sandia and Mortandad Canyons <\/strong>Chromium Groundwater Contamination<\/strong><\/p>\n\n\n\n

\n\n\n\n

2019<\/strong><\/p>\n\n\n\n

October 3, 2019 \u2013 NMED Semiannual Progress Report on Chromium Plume Control Interim Measure Performance<\/a> TA-05 39134<\/p>\n\n\n\n

September 24, 2019 \u2013 LANL Submittal of the Supplemental Work Plan for Pilot-Scale Amendments Testing for Chromium in Groundwater beneath Mortandad Canyon<\/a><\/p>\n\n\n\n

September 18, 2019 \u2013 LANL Semiannual Progress Report on Chromium Plume Control Interim Measure Performance, January through June 2019<\/a><\/p>\n\n\n\n

August 22, 2019 \u2013 NMED Sixth Quarterly Report on Pilot-Scale Amendments Testing for Chromium in Groundwater Beneath Mortandad Canyon<\/a><\/p>\n\n\n\n

August 21, 2019 \u2013 NMED Approval Extension Request for Submittal of Two Drilling Work Plans for Monitoring Wells R-35c and R-73<\/a><\/p>\n\n\n\n

August 7, 2019 \u2013 LANL Extension Request for Submittal of Two Drilling Work Plans for Monitoring Wells R-35c and R-73<\/a><\/p>\n\n\n\n

July 12, 2019 \u2013 NMED Results from Regional Groundwater Monitoring Well R-70<\/a><\/p>\n\n\n\n

July 4, 2019 \u2013 NMED Letter Report: Well R-70 Completion and Collection of First Groundwater Samples<\/a><\/p>\n\n\n\n

July 3, 2019 \u2013 NMED Approval Completion Report for Conversion of CrIn-6 to CrEX-5<\/a><\/p>\n\n\n\n

June 26, 2019 \u2013 LANL Submittal of the Completion Report for Conversion of CrIN-6 to CrEX-5<\/a><\/p>\n\n\n\n

June 13, 2019 \u2013 LANL Request for Extension of Phase 2 Pilot Amendment Testing Work Plan Milestone<\/a><\/p>\n\n\n\n

June 12, 2019 \u2013 LANL Fact Sheets for Regional Well R-70 (RG 97398)<\/a><\/p>\n\n\n\n

June 4, 2010 \u2013 NMED Letter Report: Well R-70 Completion and Collection of First Groundwater<\/a><\/p>\n\n\n\n

June 3, 2019 \u2013 NMED Approval 2018 Sandia Wetland Performance Report<\/a><\/p>\n\n\n\n

May 30, 2019 \u2013 LANL Submittal of the Quarterly Report for 2019 Quarter 1, Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a><\/p>\n\n\n\n

May 28, 2019 \u2013 LANL Letter Report: Well R-70 Completion and Collection of First Groundwater<\/a><\/p>\n\n\n\n

April 29, 2019 \u2013 LANL Submittal of the Sixth Quarterly Report on Pilot-Scale Amendments Testing for Chromium in Groundwater Beneath M01iandad Canyon<\/a><\/p>\n\n\n\n

April 1, 2019 \u2013 NMED Evaluation of Chromium Plume Control Interim Measure Operational Alternatives for Injection Well CrIN-6<\/a><\/p>\n\n\n\n

March 29, 2019 \u2013 NMED Fifth Quarterly Monitoring Report on Pilot-Scale Amendments Testing for Chromium in Groundwater Beneath Mortandad Canyon<\/a><\/p>\n\n\n\n

March 28, 2019 \u2013 NMED Approval Annual Progress Report on Chromium Plume Control Interim Measure Performance<\/a><\/p>\n\n\n\n

March 22, 2019 \u2013 LANL Submittal of the Semiannual Progress Report on Chromium Plume Control Interim Measure Performance<\/a> TA-05 38837<\/p>\n\n\n\n

February 28, 2019 \u2013 LANL Submittal of the Quarterly Report for 2018 Quarter 4, Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a><\/p>\n\n\n\n

February 12, 2019 \u2013 LANL Discharge Permit DP-1793 Permit Condition #9, Annual Monitoring Report, and Permit Condition #8, Discharge Report for 2018<\/a> TA-05 38807<\/p>\n\n\n\n

January 31, 2019 \u2013 LANL Submittal of the Fifth Quarterly Report on Pilot-Scale Amendments Testing for Chromium in Groundwater Beneath Mortandad Canyon<\/a> TA-05 38789<\/p>\n\n\n\n

January 28, 2019 \u2013 NMED Fourth Quarterly Report on Pilot-Scale Amendments Testing for Chromium in Groundwater Beneath Mortandad Canyon<\/a> TA-05 38783<\/p>\n\n\n\n

January 7, 2019 \u2013 NMED Approval Chromium Plume Control Interim Measure Performance Monitoring Work Plan<\/a><\/p>\n\n\n\n

2018<\/strong><\/p>\n\n\n\n

December 31, 2018 \u2013 Approval Work Plan for Tracer Testing in Support of the Phase 2 Amendments Test For Chromium Plume Center Characterization<\/a><\/p>\n\n\n\n

December 7, 2018 \u2013 LANL Notice of Intent to Conduct a Sodium Iodide Tracer Study at Los Alamos National Laboratory<\/a><\/p>\n\n\n\n

November 29, 2018 \u2013 LANL Submittal of the Quarterly Report for 2018 Quarter 3, Discharge Permit DP-1835, Class V Undergound Injection Control Wells<\/a><\/p>\n\n\n\n

November 21, 2018 \u2013 NMED Approval Drilling Work Plan for Chromium Groundwater Project, Regional Aquifer Monitoring Well R-70<\/a><\/p>\n\n\n\n

November 20, 2018 \u2013 NMED Third Quarterly Report on Pilot-Scale Amendments Testing for Chromium in Groundwater Beneath Mortandad Canyon<\/a><\/p>\n\n\n\n

November 13, 2018 \u2013 NMED Approval Completion Report for Groundwater Injection Well CrIn-6, Revision 1<\/a><\/p>\n\n\n\n

October 31, 2018 \u2013 LANL Submittal of the Completion Report for Groundwater Injection Well CrIN-6, Revision 1<\/a> TA05 38614<\/p>\n\n\n\n

October 30, 2018 \u2013 LANL Submittal of the Drilling Work Plan for Chromium Groundwater Project Regional Aquifer Monitoring Well R-70<\/a> TA05 38612<\/p>\n\n\n\n

October 30, 2018 \u2013 LANL Submittal of the Fourth Quarterly Report on Pilot-Scale Amendments Testing for Chromium in Groundwater Beneath Mortandad Canyon<\/a> TA05 38611<\/p>\n\n\n\n

October 30, 2018 \u2013 LANL Work Plan for Tracer Testing in Support of the Phase 2 Amendments Test for Chromium Plume Center Characterization<\/a> TA05 38610<\/p>\n\n\n\n

October 3, 2018 \u2013 NMED Second Quarterly Report on Pilot-Scale Amendments Testing for Chromium in Groundwater Beneath Mortandad Canyon<\/a> <\/p>\n\n\n\n

October 2, 2018 \u2013 NMED Quarterly Report on Pilot-Scale Amendments Testing for Chromium Groundwater Beneath Mortandad Canyon<\/a><\/p>\n\n\n\n

September 26, 2018 \u2013 Approval Request for Extension of Phase 2 Pilot Amendments Testing Work Plan<\/a><\/p>\n\n\n\n

September 26, 2018 \u2013 LANL Submittal of the Annual Progress Report on Chromium Plume Control Interim Measure Performance<\/a> TA-05 38596<\/p>\n\n\n\n

September 24, 2018 \u2013 NMED Approval Completion Report for Groundwater Extraction Well CrEX-4<\/a><\/p>\n\n\n\n

September 24, 2018 \u2013 NMED Approval Completion Report for Groundwater Extraction Well CrEX-2<\/a><\/p>\n\n\n\n

September 20, 2018 \u2013 LANL Request for Extension of Phase 2 Pilot Amendments Testing Work Plan Milestone<\/a> TA05 38592<\/p>\n\n\n\n

August 30, 2018 \u2013 LANL Submittal of the Quarterly Report for 2018 Quarter 2, Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a><\/p>\n\n\n\n

August 23, 2018 \u2013 LANL Notice of Intent to Conduct a Tracer Study at Los Alamos National Laboratory<\/a><\/p>\n\n\n\n

August 14, 2018 \u2013 NMED Compendium of Technical Reports Conducted Under the Work Plan for the Chromium Plume Center Characterization<\/a><\/p>\n\n\n\n

July 31, 2018 \u2013 LANL Submittal of the Third Quarterly Report on Pilot-Scale Amendments Testing for Chromium in Groundwater Beneath Mortandad Canyon<\/a><\/p>\n\n\n\n

June 26, 2018 \u2013 LANL Missing Appendix A to Attachment 9 of the Compendium of Technical Reports Conducted Under the Work Plan for Chromium Plume Center Characterization<\/a><\/p>\n\n\n\n

June 6, 2018 \u2013 NMED Evaluation of Chromium Plume Control Interim Measure Operational Alternatives for Injection Well CrIN-6<\/a><\/p>\n\n\n\n

June 5, 2018 \u2013 NMED Approval 2017 Sandia Wetland Performance Report<\/a><\/p>\n\n\n\n

May 24, 2018 \u2013 LANL Annual Periodic Monitoring Reports for the Chromium Investigation, Material Disposal Area C, and Technical Area 54 Monitoring Groups<\/a><\/p>\n\n\n\n

May 2, 2018 \u2013 NMED Completion of Chromium Extraction Well CrEX-4 Installation, Testing, and Integration into the Chromium Plume Control Interim Measure Extraction, Treatment, and Injection System<\/a><\/p>\n\n\n\n

April 26, 2018 \u2013 LANL Evaluation of Chromium Plume Control Interim Measure Operational Alternatives for Injection Well CrIN-6<\/a> TA-05 38432<\/p>\n\n\n\n

April 26, 2018 \u2013 LANL Second Quarterly Report on Pilot-Scale Amendments Testing for Chromium in Groundwater Beneath Mortandad Canyon<\/a> TA-05 38431<\/p>\n\n\n\n

April 25, 2018 \u2013 LANL Completion Report for Groundwater Extraction Well CrEX-4<\/a> TA\u2013 05 38428<\/p>\n\n\n\n

April 25, 2018 \u2013 2017 Sandia Wetland Performance Report<\/a><\/p>\n\n\n\n

April 24, 2018 \u2013 LANL Chromium Plume Control Interim Measure Performance Monitoring Work Plan<\/a> TA-05 38423<\/p>\n\n\n\n

April 23, 2018 \u2013 LANL Quarterly Reports (2016: Quarter 4, 2017; Quarters 1, 2, 3, and 4), Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a><\/p>\n\n\n\n

March 28, 2018 \u2013 LANL Compendium of Technical Reports Conducted Under the Work Plan for Chromium Plume Center Characterization<\/a> TA 05 38414<\/p>\n\n\n\n

March 22, 2018 \u2013 LANL Notice of New Date for Submittal of the \u201cCrIN-6 Evaluation Report\u201d<\/a> TA 05 38410<\/p>\n\n\n\n

March 22, 2018 \u2013 LANL Completion of Chromium Extraction Well CrEX-4 Installation, Testing, and Integration into the Chromium Plume Control Interim Measure Extraction, Treatment, and Injection System<\/a> TA 05 38409<\/p>\n\n\n\n

March 21, 2018 \u2013 LANL As-Built Specifications for CrEX-4 and Integrity Testing of Distributing Piping from CrEx-1, CrEx-2, CrEx-3, and CrEx-4 to CrIN-1, CrIN-2, CrIN-3, CrIN-4, CrIN-5, and CrIN-6, Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a><\/p>\n\n\n\n

February 26, 2018 \u2013 LANL Quarterly Report \u2013 2017 Quarter 4, Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a><\/p>\n\n\n\n

February 26, 2018 \u2013 LANL Discharge Permit DP-1793 Annual Monitoring Report<\/a><\/p>\n\n\n\n

February 8, 2018 \u2013 LANL Quarterly Report on Pilot-Scale Amendments Testing for Chromium in Groundwater beneath Mortandad Canyon<\/a><\/p>\n\n\n\n

January 29, 2018 \u2013 LANL Quarterly Report on Pilot-Scale Amendments Testing for Chromium in Groundwater beneath Mortandad Canyon<\/a> 38360<\/p>\n\n\n\n

2017<\/strong><\/p>\n\n\n\n

December 21, 2017 \u2013 NMED Annual Periodic Monitoring Report for the Chromium Investigation Monitoring Group<\/a><\/p>\n\n\n\n

December 4, 2017 \u2013 LANL Fact Sheets for CrEx-4<\/a><\/p>\n\n\n\n

November 22, 2017 \u2013 NMED GWQB Approval of Extension Request for Work Plan #6 for the Treatment and Land Application of Groundwater from Technical Areas 09 and 16, DP-1793<\/a><\/p>\n\n\n\n

November 22, 2017 \u2013 NMED GWQB Approval of Extension Request for Multiple Activities Work Plan for the Treatment and Land Application of Groundwater at TA-05, DP-<\/a>1793<\/a><\/p>\n\n\n\n

November 22, 2017 \u2013 LANL Quarterly Report \u2013 2017 Quarter 3, Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a><\/p>\n\n\n\n

November 22, 2017 \u2013 LANL Integrity Testing of Injection Well CrIN-6 and Distribution Piping from Extraction Wells to Injection Wells, Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a><\/p>\n\n\n\n

November 22, 2017 \u2013 NMED GWQB Approval of Amendment 2 \u2013 Additional Source (CrEX-4) for Multiple Activities Work Plan for Treatment and Land Application of Groundwater from Mortandad and Sandia Canyons, DP-1793 Work Plan #5<\/a><\/p>\n\n\n\n

November 21, 2017 \u2013 NMED Path Forward in Response to the NMED\u2019s September 1, 2017 Notification to Temporarily Limit Injection Into CrIN-1 and CrIN-6, Discharge Permit DP-1835<\/a><\/p>\n\n\n\n

October 26, 2017 \u2013 LANL Amendment 2 \u2013 Additional Source (CrEX-4) for Multiple Activities Work Plan for the Treatment and Land Application of Groundwater from Mortandad and Sandia Canyons, DP-1793 Work Plan #5<\/a><\/p>\n\n\n\n

October 12, 2017 \u2013 NMED Approval Chromium Background Study Report<\/a><\/p>\n\n\n\n

September 28, 2017 \u2013 LANL Extension Request for Multiple Activities Work Plan for the Treatment and Land Application of Groundwater from Mortandad and Sandia Canyons, DP-1793 Work Plan #5<\/a><\/p>\n\n\n\n

September 25, 2017 \u2013 NMED GWQB \u2013 NMED Response \u2013 Notification of Commencement of Injection at CrIN-6, Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a><\/p>\n\n\n\n

September 15, 2017 \u2013 NMED Approval <\/a>Drilling Work Plan for Groundwater Extraction Well CrEX-4<\/a><\/p>\n\n\n\n

September 11, 2017 \u2013 Approval with Modifications 2016 Sandia Wetland Performance Report<\/a><\/p>\n\n\n\n

September 1, 2017 \u2013 LANL, DP-1835, Notification of Temporarily Limit Injection into CrIN-1 and CrIN-6<\/a><\/p>\n\n\n\n

August 28, 2017 \u2013 LANL Integrity Testing of Distribution Piping from CrEX-1, CrEX-2, and CrEX-3 to CrIn-1, CrIN-2, CrIN-3, CrIN-4, and CrIN-5, Discharge Permit 1835, Class V Underground Injection Control Wells<\/a><\/p>\n\n\n\n

August 28, 2017 \u2013 LANL Condition No. 3 Extension Request, Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a><\/p>\n\n\n\n

July 31, 2017 \u2013 NMED<\/a> Approval Pilot-Scale Amendments<\/a> Testing Work Plan for Chromium in Groundwater Beneath Mortandad<\/a> Canyon<\/a> TA05 38153<\/p>\n\n\n\n

July 27, 2017 \u2013 LANL Fact Sheets for CrIN-6<\/a> TA05 38145<\/p>\n\n\n\n

July 21, 2017 \u2013 NMED GWQB Discharge Permit Amendment, Los Alamos National Laboratory Underground Injection Control Wells, DP-1835<\/a> TA05 38147<\/p>\n\n\n\n

July 17, 2017 \u2013 NMED Approval Chromium Extraction Well Evaluation Report and Recommendations for CrEX-2<\/a> TA05 38129<\/p>\n\n\n\n

July 13, 2017 \u2013 LANL As-Built Specifications for CrEX-2, Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a> TA05 38130<\/p>\n\n\n\n

July 13, 2017 \u2013 LANL Notification of Commencement of Injection at CrIN-1, CrIN-2, and CrIN-3, Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a> TA05 38128<\/p>\n\n\n\n

July 11, 2017 \u2013 LANL Pilot-Scale Amendments Testing Work Plan for Chromium in Groundwater beneath Mortandad Canyon<\/a> TA05 38116<\/p>\n\n\n\n

June 28, 2017 \u2013 LANL Discharge Permit 1835 Proposed Updates<\/a> TA03 38120<\/p>\n\n\n\n

June 1, 2017 \u2013 LANL Fact Sheets for CrEX-2<\/a> TA05 38072<\/p>\n\n\n\n

May 31, 2017 \u2013 LANL Quarterly Report \u2013 2017 Quarter 1, Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a> TA03 38093<\/p>\n\n\n\n

May 15, 2017 \u2013 LANL Annual Periodic Monitoring Reports for the Material Disposal Area C, Technical Area 54, and Chromium Investigation Monitoring Groups<\/a> TA03 38050<\/p>\n\n\n\n

May 12, 2017 \u2013 NMED Approval with Modification Well Completion Report for Chromium Plume Control Interim Measure and Plume-Center Characterization Injection Wells CrIN-1, CrIN-2, CrIN-3, CrIN-4, and CrIN-5<\/a> TA05 38057<\/p>\n\n\n\n

April 27, 2017 \u2013 LANL 2016 Sandia Wetland Performance Report<\/a> TA03 38011<\/p>\n\n\n\n

April 25, 2017 \u2013 LANL Chromium Extraction Well Evaluation Report and Recommendations for CrEX-2<\/a> TA03 38006<\/p>\n\n\n\n

March 31, 2017 \u2013 NMED GWQB Response to Notice of Intent to Discharge; DP-1835<\/a> TA03 98537<\/p>\n\n\n\n

March 28, 2017 \u2013 LANL Well Completion Report for Chromium Plume Control Interim Measure and Plume-Center Characterization Injection Wells CrIN-1, CrIN-2, CrIN-3, CrIN-4, and CrIN-5<\/a> TA05 37956<\/p>\n\n\n\n

February 27, 2017 \u2013 LANL Quarterly Report \u2013 2016 Quarter 4, Discharge Permit DP-1835<\/a> TA03 37929<\/p>\n\n\n\n

February 20, 2017 \u2013 NMED GWQB Response to Notice of Intent to Discharge; DP-1835<\/a> TA03 37922<\/p>\n\n\n\n

February 16, 2017 \u2013 NMED GWQB Confirmation of Compliance with Discharge Permit 1835 Pre-Discharge Requirements, Los Alamos National Laboratory Underground Injection Control Wells CrIN-1, CrIN-2, and CrIN-3<\/a> TA03 37920<\/p>\n\n\n\n

February 13, 2017 \u2013 LANL Work Plan #3 Discharge Report, Treatment and Land Application of Groundwater from Mortandad and Sandia Canyons, DP-1793<\/a> TA05 37916<\/p>\n\n\n\n

January 30, 2017 \u2013 LANL Field Summary Report for Alluvial Piezometers in Sandia Canyon<\/a> TA72 37871<\/p>\n\n\n\n

January 19, 2017 \u2013 LANL Notice of Intent to Conduct a Tracer Study at Los Alamos National Laboratory<\/a> TA03 37900<\/p>\n\n\n\n

January 4, 2017 \u2013 NMED Approval Drilling Work Plan for Groundwater Injection Well CrIN-6<\/a> TA-05 37843<\/p>\n\n\n\n

2016<\/strong><\/p>\n\n\n\n

December 13, 2016 \u2013 LANL Drilling Work Plan for Groundwater Injection Well CrIN-6<\/a> TA-05 37822<\/p>\n\n\n\n

December 9, 2016 \u2013 LANL Mechanical Integrity Testing of Injection Wells CrIN-1, CrIN-2, and CrIN-3, Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a> TA-05 37828<\/p>\n\n\n\n

December 7, 2016 \u2013 NMED GWQB Confirmation of Compliance with Discharge Permit 1835 Pre-Discharge Requirements, Los Alamos National Laboratory Underground Injection Control Wells<\/a> TA03 37815<\/p>\n\n\n\n

November 28, 2016 \u2013 NMED Approval with Modifications 2015 Sandia Wetland Performance Report<\/a> TA-03 37809<\/p>\n\n\n\n

November 22, 2016 \u2013 NMED Periodic Monitoring Report for Chromium Investigation Monitoring Group, Second Quarter, Monitoring Year 2016<\/a> TA-03 37811<\/p>\n\n\n\n

November 18, 2016 \u2013 NMED Approval with Modifications 2015 Sandia Wetland Performance Report<\/a> TA03 37809<\/p>\n\n\n\n

November 15, 2016 \u2013 LANL Results from Integrity Testing of Distribution Piping from CfEX-1 to CrIN-4 and CrIN-5, Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a> TA-03 37804<\/p>\n\n\n\n

November 10, 2016 \u2013 LANL Mechanical Integrity Testing of Injection Wells CrIN-4 and CrIN-5, Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a> TA-03 37803<\/p>\n\n\n\n

November 10, 2016 \u2013 LANL Documentation of Treatment Efficiency, Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a> TA-03 37801<\/p>\n\n\n\n

November 3, 2016 \u2013 LANL Notification of Commencement of Injection, Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a> TA-03 37784<\/p>\n\n\n\n

October 17, 2016 \u2013 NMED GWQB Mechanical Integrity Testing, Los Alamos National Laboratory Underground Injection Control Wells, Discharge Permit 1835<\/a> 33781<\/p>\n\n\n\n

October 14, 2016 \u2013 LANL Proposed Test Method, Distribution Piping, Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a> TA-03 37757<\/p>\n\n\n\n

October 11, 2016 \u2013 NMED Approval Completion Report for Groundwater Extraction Well CrEX-3<\/a> TA-05 37751<\/p>\n\n\n\n

October 4, 2016 \u2013 LANL Chromium Project Field Work Implementation Schedule<\/a><\/p>\n\n\n\n

September 26, 2016 \u2013 LANL Fact Sheets for CrIN-3<\/a><\/p>\n\n\n\n

September 6, 2016 \u2013 LANL Completion Report for Groundwater Extraction Well CrEX-3<\/a><\/p>\n\n\n\n

August 31, 2016 \u2013 NMED GWQB Discharge Permit Issuance, LANL Underground Injection Control Wells, Discharge Permit 1835<\/a><\/p>\n\n\n\n

August 24, 2016 \u2013 LANL Submittal of the Periodic Monitoring Reports for Chromium Investigation, Technical Area 54, Technical Area 16 260, Pajarito General Surveillance, and Material Disposal Area AB Monitoring Groups<\/a><\/p>\n\n\n\n

August 18, 2016 \u2013 LANL Submittal of the Fact Sheets for CrIN-5<\/a><\/p>\n\n\n\n

August 11, 2016 \u2013 LANL Submittal of the Fact Sheets for CrIN-1<\/a><\/p>\n\n\n\n

August 11, 2016 \u2013 NMED Request to Discontinue the Monthly Email Notification on the Progress of the Office of the State Engineer<\/a> TA-03 37719<\/p>\n\n\n\n

August 4, 2016 \u2013 LANL Filing of 100% Design Plans and Specification, Discharge Permit Application DP-1835, Class V Underground Injection Control Wells<\/a> TA-7711<\/p>\n\n\n\n

June 30, 2016 \u2013 LANL Request to Discontinue the Monthly Email Notification on the Progress of the Office of the State Engineer Application Process<\/a><\/p>\n\n\n\n

June 27, 2016 \u2013 LANL Submittal of the Facts Sheets for CrIN-4<\/a> 37590<\/p>\n\n\n\n

June 14, 2016 \u2013 LANL Submittal of the Fact Sheets for Injection Well CrIN-2<\/a> 37578<\/p>\n\n\n\n

June 3, 2016 \u2013 NMED Approval Second Request for Extension to Initiate Pumping Tests at CrEX-1 and CrEX-3<\/a><\/p>\n\n\n\n

May 25, 2016 \u2013 LANL Second Request for Extension to Initiate Pumping Tests at CrEX-1 and CrEX-3<\/a><\/p>\n\n\n\n

May 25, 2016 \u2013 LANL Amendment to Discharge Permit Application DP-1835<\/a><\/p>\n\n\n\n

May 25, 2016 \u2013 LANL Second Request for Extension to Initiate Pumping Tests at CrEX-1 and CrEX-3<\/a><\/p>\n\n\n\n

May 24, 2016 \u2013 NMED GWQB Approval with Modification of Workplan #3 for Treatment and Land Application of Groundwater at TA-05, Los Alamos National Laboratory, Discharge Permit 1793<\/a><\/p>\n\n\n\n

May 17, 2016 \u2013 LANL Submittal of the Periodic Monitoring Reports for Chromium Investigation, Technical Area 54, and Material Disposal Area C Monitoring Groups<\/a><\/p>\n\n\n\n

May 12, 2016 \u2013 LANL Additional Information for Discharge Permit Application DP-1835<\/a><\/p>\n\n\n\n

May 4, 2016 \u2013 LANL Submittal of the Fact Sheets for CrEX-3<\/a> 37557<\/p>\n\n\n\n

May 3, 2016 \u2013 NMED Approval Request for Extension to Complete Regional Aquifer Well R-61r<\/a><\/p>\n\n\n\n

May 3, 2016 \u2013 NMED Approval Request for an Extension to Conduct Pumping Tests at CrEX-1 and CrEX-3<\/a><\/p>\n\n\n\n

May 2016 \u2013 LANL Field Implementatin Plan for Alluvial Piezometers in Sandia Canyon<\/a> General 38024<\/p>\n\n\n\n

April 28, 2016 \u2013 LANL Submittal of the 2015 Sandia Wetland Performance Report<\/a><\/p>\n\n\n\n

April 20. 2016 \u2013 LANL Request for Extension to Complete Regional Aquifer Well R-61r<\/a><\/p>\n\n\n\n

April 20, 2016 \u2013 LANL Request for Extension to Conduct Pumping Tests at CrEX-1 and CrEX-3<\/a><\/p>\n\n\n\n

March 18, 2016 \u2013 NMED GWQB Hearing Determination Request, DP-1835, Class V Underground Injection Control<\/a> TA03 37523<\/p>\n\n\n\n

March 17, 2016 \u2013 NMED Approval with Modification Drilling Work Plan for Alluvial Piezometers in Sandia Canyon<\/a><\/p>\n\n\n\n

March 16, 2017 \u2013 LANL Multiple Activities Work Plan for the Treatment and Land Application of Groundwater from Mortandad and Sandia Canyons, DP-1793 Work Plan #5<\/a> TA03 37975<\/p>\n\n\n\n

March 14, 2016 \u2013 NMED GWQB Spill Response Assessment and Closure of Release ID# 2011-319 occurring at Monitoring Well R-61, reported to NMED on November 16, 2011<\/a><\/p>\n\n\n\n

March 4, 2016 \u2013 LANL Notice of Intent to Conduct Tracer Study at Los Alamos National Laboratory<\/a><\/p>\n\n\n\n

March 2016 \u2013 LANL WCSF: Drilling Work Plan for Alluvial Piezometers in Sandia Canyon<\/a> General 30822<\/p>\n\n\n\n

March 2016 \u2013 LANL IWD 2016 Drilling and Installation of Alluvial Piezometers in Sandia Canyon<\/a> General 38023<\/p>\n\n\n\n

February 25, 2016 \u2013 LANL Submittal of the Periodic Monitoring Reports for Chromium Investigation, Mortandad-Sandia, Technical Area 21, and White Rock Monioring Groups<\/a><\/p>\n\n\n\n

February 22, 2016 \u2013 LANL Discharge Permit DP-1793 Annual Monitoring Report for 2015<\/a><\/p>\n\n\n\n

February 18, 2016 \u2013 LANL Submittal of the Completion Report for Combined Regional Aquifer Well R-67 and Chromium Corehole 6<\/a> 37430<\/p>\n\n\n\n

February 16, 2016 \u2013 EPA Technical Review comments of the Interim Measures Work Plan for Chromium Plume Control<\/a> 37493<\/p>\n\n\n\n

February 10, 2016 \u2013 NMED Approval Request for a Two-Year Extension to Install the Angled Boring for Sandia Wetland Borehole 1 (SWB-1)<\/a><\/p>\n\n\n\n

February 3, 2016 \u2013 LANL Request for a Two-Year Extension to Install the Angled Boring for Sandia Wetland Borehole 1 (SWB-1)<\/a> TA03 37365<\/p>\n\n\n\n

January 22, 2106 \u2013 NMED Approval with Modifications Drilling Work Plan for Chromium Plume Control Interim Measure and Plume-Center Characterization Injetion Wells CrIN-1 through CrIN-6<\/a> 37439<\/p>\n\n\n\n

2015<\/strong><\/p>\n\n\n\n

December 30, 2015 \u2013 NMED Approval Drilling Work Plan for Groundwater Extraction Well CrEX-3<\/a> 37426<\/p>\n\n\n\n

December 15, 2015 \u2013 LANL Submittal of the Drilling Work Plan for Alluvial Piezometers in Sandia Canyon<\/a> TA03 376995<\/p>\n\n\n\n

December 15, 2015 \u2013 LANL Submittal of the Drilling Work Plan for Chromium Plume Control Interim Measure and Plume-Center Characterization Injection Wells CrIN-1 through CrIN-6<\/a> 37343<\/p>\n\n\n\n

November 24, 2015 \u2013 LANL Review Comments, Draft Discharge Permit DP-1835, Class V Underground Injection Control Wells<\/a><\/p>\n\n\n\n

November 17, 2015 \u2013 LANL Floodplain Assessment of the Chromium Plume Control Interim Measure and Plume-Center Characterization in Mortandad Canyon<\/a> 37404<\/p>\n\n\n\n

November 12, 2015 \u2013 LANL Submittal of the Drilling Work Plan for Groundwater Extraction Well CrEX-3<\/a> 37331 TA05<\/p>\n\n\n\n

October 29, 2015 \u2013 NMED Discharge Permit DP-1793, Modification of Approval Conditions related to Workplan #2, DP-1793<\/a><\/p>\n\n\n\n

October 27, 2015 \u2013 NMED Summary of October 21, 2015 Meeting<\/a><\/p>\n\n\n\n

October 15, 2015 \u2013 NMED Approval with Modifications Work Plan for Chromium Plume Center Characterization<\/a><\/p>\n\n\n\n

October 19, 2015 \u2013 San Ildefonso \u2013 NMED Approval with Modifications Interim Measures Work Plan for Chromium Plume Control<\/a><\/p>\n\n\n\n

October 15, 2015 \u2013 NMED Approval with Modifications Interim Measures Work Plan for Chromium Plume Control<\/a><\/p>\n\n\n\n

October 8, 2015 \u2013 LANL Request for Additional Information, Class V Underground Injection Control Wells, Discharge Permit DP-1835<\/a><\/p>\n\n\n\n

October 8, 2015 \u2013 NMED Discharge Permit DP-1793, Approval of Workplan #2 for Treatment and Land Application of Groundwater<\/a><\/p>\n\n\n\n

September 3, 2015 \u2013 LANL Multiple Activities Work Plan for the Treatment and Land Application of Groundwater from Mortandad and Sandia Canyons, DP-1793 WP#2<\/a><\/p>\n\n\n\n

September 1, 2015 \u2013 NMED Approval Completion Report for Chromium Project Coreholes 1 through 5<\/a><\/p>\n\n\n\n

July 28, 2015 \u2013 LANL Submittal of the Work Plan for Chromium Plume Center Characterization<\/a> TA05 37208<\/p>\n\n\n\n

July 27, 2015 \u2013 NMED GWQB Discharge Permit, DP-1793, Los Alamos National Laboratory<\/a><\/p>\n\n\n\n

May 26, 2015 \u2013 LANL Submittal of the Interim Measures Work Plan for Chromium Plume Control<\/a><\/p>\n\n\n\n

February 19, 2015 \u2013 NMED Approval Drilling Work Plan for Groundwater Monitoring Well SIMR-2 (Formerly R-68)<\/a> 36949 TA 09<\/p>\n\n\n\n

February 2, 2015 \u2013 LANL Submittal Drilling Work Plan for Groundwater Monitoring Well SIMR-2 (Formerly R-68)<\/a> 36891 TA 09<\/p>\n\n\n\n

February 2, 2015 \u2013 LANL Submittal Drilling Work Plan for Regional Aquifer Well R-61r<\/a> 36892 TA 03<\/p>\n\n\n\n

January 29, 2015 \u2013 LANL Submittal of the completion Report for Groundwater Extraction Well CrEX-1<\/a> 36890 TA 05<\/p>\n\n\n\n

January 29, 2015 \u2013 LANL Reference 254859, February 28, 2014. Waste Characterization Strategy Form for Chromium Well CrEx-1, Los Alamos National Laboratory, Los Alamos, New Mexico. (LANL 2014, 254859)<\/a> 36925 General<\/p>\n\n\n\n

January 29, 2015 \u2013 LANL Reference 254859, February 28, 2014. Waste Characterization Strategy Form for Chromium Well CrEx-1, Los Alamos National Laboratory, Los Alamos, New Mexico. (LANL 2014, 254859)<\/a> 36925 General<\/p>\n\n\n\n

January 29, 2015 \u2013 LANL 600140 DOE (U.S. Department of Energy), May 19, 2014. \u201cWell Pump Tests Phase II in Sandia and Mortandad Canyons,\u201d U.S. Department of Energy Categorical Exclusion Determination Form, Los Alamos Site Office, Los Alamos, New Mexico. (DOE 2014, 600140)<\/a> 36930 General<\/p>\n\n\n\n

January 29, 2015 \u2013 LANL Field Implementation Plan for CrEX-1<\/a> 36926 General<\/p>\n\n\n\n

January 29, 2015 \u2013 LANL 600131 Yellow Jacket Drilling, June 27, 2014. \u201cIntegrated Work Document for Drilling and Installation of LANL Well [CrEX-1],\u201d Gilbert, Arizona. (Yellow Jacket Drilling 2014, 600131)<\/a> 36927 General<\/p>\n\n\n\n

January 29, 2015 \u2013 LANL 600135 Dale, M., June 19, 2014. FW: Extraction Well CrEX-1 start up notification. E-mail message to H. Shen (NMED) and D. Katzman (LANL) from M. Dale (NMED), Santa Fe, New Mexico. (Dale 2014, 600135) <\/a> 36928 General<\/p>\n\n\n\n

January 29, 2015 \u2013 LANL 600136 Moench, A.F., June 1997. \u201cFlow to a Well of Finite Diameter in a Homogenous, Anisotropic Water Table Aquifer,\u201d Water Resources Research, Vol. 33, No. 6, pp. 1397\u20131407. (Moench 1997, 600136)<\/a> 36929 General<\/p>\n\n\n\n

January 29, 2015 \u2013 LANL 600141 OSE (New Mexico Office of the State Engineer), July 21, 2014. \u201cApplication for Permit to Drill a Well with No Consumptive Use of Water,\u201d OSE File No. RG 94875, Santa Fe, New Mexico. (OSE 2014, 600141)<\/a> 36931 General<\/p>\n\n\n\n

January 22, 2015 \u2013 LANL Submittal: Fact Sheet for Chromium Corehole 3<\/a> 36886 TA 00<\/p>\n\n\n\n

2014<\/strong><\/p>\n\n\n\n

December 10, 2014 \u2013 LANL Submittal of the Fact Sheets for Chromium Corehole 1<\/a> 36837 TA 05<\/p>\n\n\n\n

December 2, 2014 \u2013 NMED Evaluation of Regional Well R-61<\/a> 36830 TA 03<\/p>\n\n\n\n

November 25, 2014 \u2013 LANL Submittal of the Periodic Monitoring Reports for Chromium (2), Los Alamos\/Pueblo, Material Disposal Area C, and Mortandad\/Sandia Monitoring Groups<\/a> 36756 TA 00<\/p>\n\n\n\n

November 3, 2014 \u2013 LANL Submittal of the Fact Sheets for CrEX-1<\/a> 36734 TA 03<\/p>\n\n\n\n

October 6, 2014 \u2013 LANL Submittal of the Response to Comments and Replacement Pages \u2013 completion Report for the Sandia Canyon Grade \u2013 Control Structure<\/a> 36624 TA 03
September 26, 2014 \u2013 Approval with Modifications Drilling Work Plan for Chromium Project Coreholes<\/a> 36651 TA 00<\/p>\n\n\n\n

September 23, 2014 \u2013 NMED Approval Drilling Work Plan for an Investigation Borehole Beneath the Sandia Canyon Wetland<\/a> 36723 TA 03<\/p>\n\n\n\n

September 5, 2014 \u2013 NMED Approval with Modifications Completion Report for Sandia Canyon Grade \u2013 Control Structure<\/a> 36701 TA 03<\/p>\n\n\n\n

September 5, 2014 \u2013 NMED Status Report for Pumping Test at Well R-42<\/a> 36705 TA 05<\/p>\n\n\n\n

July 30, 2014 \u2013 LANL Submittal of the Drilling WP for Chromium Project Coreholes<\/a> 36564 TA 00<\/p>\n\n\n\n

June 30, 2014 \u2013 LANL Sandia Wetland Performance Report, Baseline Conditions 2012 \u2013 2014<\/a> 36364 TA 03<\/p>\n\n\n\n

June 20, 2014 \u2013 LANL Drilling WP for and Investigation Borehole Beneath the Sandia Canyon Wetland<\/a> 36356 TA 03<\/p>\n\n\n\n

May 27, 2014 \u2013 LANL Extension Request to Submit the Drilling WP for Well R-67 (chromium)<\/a> 36323 TA 03<\/p>\n\n\n\n

May 27, 2014 \u2013 LANL Extension Request to Submit the Drilling WP for Well R-68 (chromium)<\/a> 36324 TA 03<\/p>\n\n\n\n

May 20, 2014 \u2013 LANL Submittal: Periodic Monitoring Reports for TA 54, White Rock, (2) Chromium Investigations, And MDA C Monitoring Groups<\/a> 36317 TA 03<\/p>\n\n\n\n

April 7, 2014 \u2013 Extension Request to Submit the 1st Annual Sandia Canyon Wetland Performance Monitoring Report for 2013<\/a> 36279 TA 03<\/p>\n\n\n\n

March 19, 2014 \u2013 NMED Plugging and Abandonment Summary Report for Boreholes 49-10046, 49-10047, 49-10048, Coreholes CH-1, CH-3, CH-4, Test Holes TH-4, TBM-1, TBM-2, and Layne Western Well <\/a> 36265 TA 49<\/p>\n\n\n\n

March 31, 2014 \u2013 Submittal of Summary Report for the 2013 Chromium Groundwater Aquifer Tests at R-42, R-28 and SCI-2<\/a> 36274 TA 05<\/p>\n\n\n\n

March 18, 2014 \u2013 LANL Submittal Drilling WP for Extraction Well crEX-1<\/a> 36262 TA 03<\/p>\n\n\n\n

February 26, 2014 \u2013 LANL Submittal: Periodic Monitoring Report for Chromium Investigation, MDA C, Pajarito, and Los Alamos and Pueblo Monitoring Groups<\/a> 36<\/p>\n\n\n\n

January 31, 2014 \u2013 LANL Justification for not Drilling well SCI-4<\/a> 36238 TA 03<\/p>\n\n\n\n

2013<\/strong><\/p>\n\n\n\n

December 23, 2013 \u2013 LANL 251704 USACE (U.S. Army Corps of Engineers), March 27, 2013. \u201cAction No. SPA-2012-00050-ABQ, McCann, LANL, Sandia Canyon, Wetland, Los Alamos County, NM,\u201d USACE letter to J. McCann (LANL) from W. Oberle (USACE), Albuquerque, New Mexico. (USACE 2013, 251704)<\/a> 36154 General<\/p>\n\n\n\n

December 23, 2013 \u2013 LANL 251705 (Los Alamos National Laboratory), September 4, 2013. \u201cAction No. SPA-2012-00050-ABQ Potential Removal and Placement of Sediments at Sandia Canyon Wetland,\u201d Los Alamos National Laboratory letter (ENV-DO-13-0073) to W. Oberle (USACE) from A.R. Grieggs (LANL) and G.E. Turner (DOE-NA-00-LA), Los Alamos, New Mexico. (LANL 2013, 251705)<\/a> 36153 General<\/p>\n\n\n\n

December 23, 2013 \u2013 LANL 251706 USACE (U.S. Army Corps of Engineers), September 5, 2013. \u201cPotential Violation \u2013 Action No. SPA-2012- 00050-ABQ, McCann, LANL, Sandia Canyon, Wetland, Los Alamos County, NM,\u201d USACE letter to G. Turner (DOE-NA-00-LA) and A.R. Grieggs (LANL) from W. Oberle (USACE), Albuquerque, New Mexico. (USACE 2013, 251706)<\/a> 36155 General<\/p>\n\n\n\n

December 23, 2013 \u2013 LANL Final Project Report, Land Application of Treated GW From Monitoring Wells R-28 & SCI-2, DP-1793<\/a> 36106 TA 05<\/p>\n\n\n\n

December 19, 2013 \u2013 LANL Completion Report for Sandia Canyon Wetland Grade Control Structure<\/a> 36096 TA 03<\/p>\n\n\n\n

November 19, 2013 \u2013 LANL Final Project Report, Land application of Treated GW from Monitoring Well R-42, DP-1793<\/a> 36068 TA 05<\/p>\n\n\n\n

November 19, 2013 \u2013 LANL Submittal of the Periodic Monitoring Reports for Chromium Investigation, Material Disposal Area C, Pajarito, and Los Alamos and Pueblo Monitoring Groups<\/a> 36070 TA 00<\/p>\n\n\n\n

October 8, 2013 \u2013 NMED Extension Request Denial to submit the WP for the Replacement of R-61<\/a> 36765 TA 03<\/p>\n\n\n\n

September 30, 2013 \u2013 Extension Request to Submit the WP for the Replacement of Regional Well R-61<\/a> 36618 TA 03<\/p>\n\n\n\n

September 27, 2013 \u2013 LANL Response to the Approval with Modification for the IM WP for the Evaluation of Chromium Mass Removal \u2013 Status Report for Pumping Test at Well R-42<\/a> 36020 TA 05<\/p>\n\n\n\n

September 27, 2013 \u2013 LANL Response to the Approval with Modification for the IM WP for the Evaluation of Chromium Mass Removal \u2013 Status Report for Pumping Test at Well R-42<\/a> 36020 TA 05<\/p>\n\n\n\n

September 23, 2013 \u2013 LANL Response to Review of the Periodic Monitoring Report for Mortandad and Sandia Watersheds General<\/a> 36015 TA 03<\/p>\n\n\n\n

September 23, 2013 \u2013 LANL Response to Review of the Periodic Monitoring Report for Mortandad and Sandia Watersheds General<\/a> 36015 TA 03<\/p>\n\n\n\n

September 4, 2013 \u2013 LANL Action No. SPA-2012-00050-ABQ Potential Removal and Placement of Sediments at Sandia Canyon Wetlands<\/a> 35988 TA 05<\/p>\n\n\n\n

August 29, 2013 \u2013 LANL Reference 243627 Stone, C.D., November 6, 2002. \u201cChromium (Cr),\u201d Texas Commission on Environmental Quality interoffice memorandum to TARA Staff and Remediation Division Staff through C. Clarke and T. McCoy from C.D. Stone., Austin, Texas. (Stone 2002, 243627)<\/a> 35997 General<\/p>\n\n\n\n

August 23, 2013 \u2013 NMED Recent Sampling Results for R-35a and Cr Results for PM-4 <\/a> 35975 TA 03<\/p>\n\n\n\n

August 23, 2013 \u2013 LANL Submittal: Periodic Monitoring Reports for Chromium Investigation, MDA AB, TA 54, and TA 16-260 Monitoring Groups<\/a> 35979 TA 16<\/p>\n\n\n\n

August 16, 2013 \u2013 NMED Dilution Tracer Schedule for R-42 & R-28<\/a> 35973 TA 05<\/p>\n\n\n\n

July 29, 2013 \u2013 LANL Supplemental Information, Temporary Permission to Discharge Treated GW from a Pumping Test at Monitoring Well R-28, DP-1793<\/a> 35961 TA 05<\/p>\n\n\n\n

July 15, 2013 \u2013 LANL Revised Sampling WP for Mortandad Sandia 4th Quarter<\/a> 35947 TA 03<\/p>\n\n\n\n

July 11, 2013 \u2013 LANL Request for Variance to Exclude SCA-2, R-61S2, and R-43S2, from the Sampling Requirements of the 4th <\/a> 36382 TA 03<\/p>\n\n\n\n

June 26, 2013 \u2013 NMED Approval with Modifications Interim Measures Work Plan for the Evaluation of Chromium Mass Removal<\/a> 35929 TA 03<\/p>\n\n\n\n

June 23, 2013 \u2013 LANL Submittal of the Evaluation of Regional Well R-61<\/a> 36358 TA 03<\/p>\n\n\n\n

June 7, 2013 \u2013 LANL Extension Request for Submittal of the WP for the Replacement of Regional Well R-61<\/a> 35907 TA 03<\/p>\n\n\n\n

May 28, 2013 \u2013 LANL Evaluation to Determine the Cause of Reducing Conditions Observed in Regional Aquifer Monitoring Wells R-54 and R-61<\/a> 35900 TA 03<\/p>\n\n\n\n

May 28, 2013 \u2013 LANL Extension Request to Complete the WP for the Replacement of Regional Well R-61<\/a> 35879 TA 03<\/p>\n\n\n\n

May 28, 2013 \u2013 LANL Email: Followup to NMED Questions; Chromium, Mortandad Canyon IM WP<\/a> 35890 TA 05<\/p>\n\n\n\n

May 28, 2013 \u2013 LANL Periodic Monitoring Reports for chromium Investigation and MDA C Monitoring Groups<\/a> 35881 TA 03<\/p>\n\n\n\n

May 22, 2013 \u2013 LANL 30 Day Extension Request for DOE\u2019s Review of the Chromium Travel Times in the Regional Aquifer, Mortandad Canyon, April 29, 2013<\/a> 35894 TA 03<\/p>\n\n\n\n

May 7, 2013 \u2013 NMED Summary Report for Redevelopment of Regional Well R-61<\/a> 35838 TA 03<\/p>\n\n\n\n

May 2, 2013 \u2013 NMED Temporary Permission to Discharge, Treated Well Development and Pump Test GW Discharge at Regional Monitoring Well R-42, DP-1793<\/a> 35852 TA 05<\/p>\n\n\n\n

May 2, 2013 \u2013 Temporary Permission to Discharge, Treated Well Development and Pump Test GW Discharge at Regional Monitoring Well R-28, DP-1793<\/a> 35853 TA 05<\/p>\n\n\n\n

April 30, 2013 \u2013 LANL Submittal of Interim Measures Work Plan for the Evaluation of Chromium Mass Removal <\/a> 35819 TA 03<\/p>\n\n\n\n

April 11, 2013 \u2013 LANL Evaluation to Determine the Cause of Reducing Conditions Observed in Regional Aquifer Wells R-54 and R-61<\/a> 35807 TA 03<\/p>\n\n\n\n

March 29, 2013 \u2013 NMED Proposed Revisions to R-61 Redevelopment Work Plan<\/a> 35790 General<\/p>\n\n\n\n

March 29, 2013 \u2013 LANL 238466 TerranearPMC, December 2012. \u201cField Implementation Plan to Plug and Abandon Boreholes 49 10046, 49-10047, 49-10048, Coreholes CH-1, CH-3, CH-4, Test Hole TH-4, TBM-1, TBM-2, and Layne Western Well,\u201d plan prepared for Los Alamos National Laboratory, Los Alamos, New Mexico. (TerranearPMC 2012, 238466)<\/a> 35789 General<\/p>\n\n\n\n

March 28, 2013 \u2013 LANL Submittal: Summary Report for Redevelopment of Regional Well R-61<\/a> 35798 TA 03<\/p>\n\n\n\n

March 26, 2013 \u2013 LANL Off Site Chromium Migration, Sandia and Mortandad Canyons<\/a> 35782 TA 03<\/p>\n\n\n\n

March 15, 2013 \u2013 NMED Response to NOI to Discharge: Discharge Permit not Required for Land Application of Rehabilitation Purge Water at Monitoring Well R-61<\/a> 35763 TA 03<\/p>\n\n\n\n

March 15, 2013 \u2013 Additional Information: Request for Temporary Permission to Discharge Treated GW from a Pumping Test at Well R-42, DP-1793<\/a> 35766 TA 05<\/p>\n\n\n\n

February 27, 2013 \u2013 LANL Request for Temporary Permission to Discharge Treated GW from a Pumping Test at Well R-28, DP-1793<\/a> 35756 TA 05<\/p>\n\n\n\n

February 19, 2013 \u2013 LANL Periodic Monitoring reports for Chromium Investigation, Mortandad & Sandia Watersheds General Surveillance, TA 21, TA 54 and White Rock & Rio Grande Watershed General Surveillance Monitoring Groups<\/a> 35736 TA 03<\/p>\n\n\n\n

January 25, 2013 \u2013 NMED Response Proposal to Submit Interim Measures Work Plan for Chromium Contamination in Groundwater<\/a> 35714 TA 03<\/p>\n\n\n\n

2012<\/strong><\/p>\n\n\n\n

December 21, 2012 \u2013 LANL Proposal to Submit IM WP for Chromium Contamination in GW<\/a> 35637 TA 03<\/p>\n\n\n\n

December 1, 2012 \u2013 LANL Status Report, Sandia \/Mortandad Watershed January 1 \u2013 June 30, 2012<\/a> 35647 TA 03<\/p>\n\n\n\n

November 20, 2012 \u2013 NMED NOI to Discharge Redevelopment Water from Regional Aquifer Monitoring Well R-61<\/a> 35764 TA 03<\/p>\n\n\n\n

November 29, 2012 \u2013 LANL Submittal: Periodic Monitoring Reports for Chromium Investigation, Pajarito Watershed General Surveillance, TA 54 Monitoring Group, MDA C Monitoring Group, and TA 16 260 Monitoring Groups<\/a> 35601 TA 16<\/p>\n\n\n\n

September 28, 2012 \u2013 LANL Reference 226765 Jamieson-Hanes, J.H., B.D. Gibson, M.B.J. Lindsay, Y. Kim, C.J. Ptacek, and D.W. Blowes, June 2012.\u201cChromium Isotope Fractionation during Reduction of Cr(VI) under Saturated Flow Conditions,\u201d Environmental Science & Technology, Vol. 46, No. 12, pp. 6783\u20136789. (Jamieson-Hanes et al. 2012, 226765)<\/a> 35499 General<\/p>\n\n\n\n

September 28, 2012 \u2013 LANL Reference 226764 Berna, E.C., T.M. Johnson, R.S. Makdisi, and A. Basu, February 2010. \u201cCr Stable Isotopes as Indicators of Cr(Vi) Reduction in Groundwater: A Detailed Time-Series Study of a Point-Source Plume,\u201d Environmental Science & Technology, Vol. 44, No. 3, pp. 1043\u20131048. (Berna et al. 2010, 226764) <\/a> 35498 General<\/p>\n\n\n\n

September 28, 2012 \u2013 LANL Reference 226766 Raddatz, A.L., T.M. Johnson, and T.L. McLing, January 2011. \u201cCr Stable Isotopes in Snake River Plain Aquifer Groundwater: Evidence for Natural Reduction of Dissolved Cr(Vi),\u201d Environmental Science & Technology, Vol. 45, No. 2, pp. 502\u2013507. (Raddatz et al. 2011, 226766)<\/a> 35500 General<\/p>\n\n\n\n

September 28, 2012 \u2013 LANL Phase 2 IR for Sandia Canyon<\/a> 35521 TA 03<\/p>\n\n\n\n

September 24, 2012 \u2013 NMED Approval Request for Extension for Completion of R-61 Redevelopment and Submittal of the Summary Report<\/a> 35481 TA 03<\/p>\n\n\n\n

September 17, 2012 \u2013 NMED Approval with Modification Completion Report for Regional Aquifer Well R-62<\/a> 35486 TA 05<\/p>\n\n\n\n

September 13, 2012 \u2013 Extension Request for Completion of R-61 Redevelopment and Submittal of the Summary Report<\/a> 35474 TA 03<\/p>\n\n\n\n

August 30, 2012 \u2013 Submittal: Periodic Monitoring Reports for Chromium Investigation, Los Alamos\/Pueblo Watershed General Surveillance, and MDA AB Monitoring Groups<\/a> 35465 TA 00<\/p>\n\n\n\n

August 27, 2012 \u2013 LANL Submittal: Replacement Appendix B of the R-62 Well Completion Report<\/a> 35458 TA 05<\/p>\n\n\n\n

August 24, 2012 \u2013 NMED Spill Response Assessment and Closure of Release ID# 2012-332 Occurring at Monitoring Wells 03-B-13, 18MW-18, CdV-16-4ip, R-4, & R-62 Reported on June 14, 2012<\/a> 35460 TA 05<\/p>\n\n\n\n

August 10, 2012 \u2013 LANL Clarification of June 18, 2012, Proposal to Perform IM Alternatives Analysis for chromium in Sandia and Mortandad Canyons<\/a> 35391 TA 03<\/p>\n\n\n\n

July 10, 2012 \u2013 NMED Approval Work Plan for Redevelopment of Monitoring Well R-61<\/a> 35342 TA 03<\/a><\/p>\n\n\n\n

July 5, 2012 \u2013 NMED Email: Reducing Agent as a Remedy for Vadose Zone Chromium VI<\/a> 35332 TA 03<\/p>\n\n\n\n

June 26, 2012 \u2013 LANL Submittal: WP for Redevelopment of Monitoring Well R-61<\/a> 35316 TA 03<\/p>\n\n\n\n

June 18, 2012 \u2013 LANL Proposal to Perform IM Alternative Analysis for chromium in Sandia and Mortandad Canyons<\/a> 35298 TA 03<\/p>\n\n\n\n

June 5, 2012 \u2013 NMED Approval Request for Extension for the Construction of the Sandia Wetland Grade-Control Structure<\/a> 35276 TA 03<\/p>\n\n\n\n

May 23, 2012 \u2013 LANL Extension Request for the Construction of the Sandia Canyon Wetland Grade Control Structure<\/a> 35251 TA 03<\/p>\n\n\n\n

May 21, 2012 \u2013 LANL Submittal: Periodic Monitoring Report for the Chromium Investigation Monitoring Group, MDA C Monitoring Group, TA 54 Monitoring Group, and TA 16 260 Monitoring Group<\/a> 35256 TA 16<\/p>\n\n\n\n

May 9, 2012 \u2013 NMED Approval Request for Extension for the Sandia Canyon Phase II Investigation Report<\/a> 35237 TA 03<\/p>\n\n\n\n

May 1, 2012 \u2013 LANL 210306 Crook, N., B. Cubbage, G. Noonan, and M. McNeill, October 17, 2011. \u201cFinal Report, Geophysical Survey of the Wetland Area of Upper Sandia Canyon,\u201d report prepared for TerranearPMC by hydroGEOPHYSICS, Tucson, Arizona. (Crook et al. 2011, 210306)<\/a> 35212 General<\/p>\n\n\n\n

May 1, 2012 \u2013 LANL 203414, May 6, 2011. \u201cWaste Characterization Strategy Form for R-62 Installation of Regional Aquifer Well,\u201d Los Alamos National Laboratory, Los Alamos, New Mexico. (LANL 2011, 203414)<\/a> 35218 General<\/p>\n\n\n\n

April 27, 2012 \u2013 LANL Extension Request for the Sandia Canyon Phase 2 IR<\/a> 35199 TA 03<\/p>\n\n\n\n

April 19, 2012 \u2013 LANL Submittal: Completion Report for Regional Aquifer Well R-62<\/a> 35180 TA 05<\/p>\n\n\n\n

April 2, 2012 \u2013 NMED Approval; Request to Defer Armoring of the Stilling Basin in Upper Sandia Canyon<\/a> 35157 TA 03<\/p>\n\n\n\n

March 29, 2012 \u2013 NMED 2nd Extension Request Approval to Submit the R-62 Well Completion Report<\/a> 35156 TA 05<\/p>\n\n\n\n

March 29, 2012 \u2013 LANL Final Project Report, Land Application of Treated GW from Monitoring Well R-28, Discharge Permit DP-1793<\/a> 35153 TA 05<\/p>\n\n\n\n

March 26, 2012 \u2013 LANL 2nd Extension Request to Submit the R-62 Well Completion Report<\/a> 35132 TA 05<\/p>\n\n\n\n

February 29, 2012 \u2013 LANL Periodic Monitoring Reports for Mortandad and Sandia, Pajarito, White Rock Canyon, Water Canyon\/Canon de Valle, and Ancho Watersheds<\/a> 35089 TA 03<\/p>\n\n\n\n

February 23, 2012 \u2013 LANL Request to Defer Armoring of the Stilling Basin in Upper Sandia Canyon<\/a> 35081 TA 03<\/p>\n\n\n\n

February 21, 2012 \u2013 NMED Approval Request for Extension to Submit the Well Completion Report for R-62<\/a> 35116 TA 05<\/p>\n\n\n\n

February 15, 2012 \u2013 LANL Extension Request to Submit the Well Completion Report for R-62 <\/a> 35078 TA 05<\/p>\n\n\n\n

January 30, 2012 \u2013 NMED Email: HACH Meter +6Cr for R-62<\/a> 35064 TA 05<\/p>\n\n\n\n

January 13, 2012 \u2013 NMED Temporary Permission to Discharge, Treated Well Development and Pump Test GW Discharge at Regional Monitoring Well R-28, DP-1793<\/a> 35038 TA 05<\/p>\n\n\n\n

2011<\/strong><\/p>\n\n\n\n

December 21, 2011 \u2013 NMED Email: GW Data for the Chromium Investigation Monitoring Group \u2013 1st Quarter Sampling 2011<\/a> 35002 General<\/p>\n\n\n\n

December 20, 2011 \u2013 LANL Discharge Permit Application for the Land Application of Treated GW from a Pumping Test at Well R-28<\/a> 35028 TA 05<\/p>\n\n\n\n

December 15, 2011 \u2013 NMED Approval Extension Request to Submit the Phase II Investigation Report for Sandia Canyon<\/a> 34996 TA 03 <\/p>\n\n\n\n

December 1, 2011 \u2013 LANL Response to Request for Information Regarding Regional Well R-61 Stormwater Pond<\/a> 34967 TA 03<\/p>\n\n\n\n

December 2, 2011 \u2013 LANL Extension Request to Submit the Phase 2 IR for Sandia Canyon<\/a> 34954 TA 03<\/p>\n\n\n\n

November 23, 2011 \u2013 LANL Periodic Monitoring Reports for Pajarito, Mortandad and Sandia, and Water Canyon\/Canon de Valle Watersheds<\/a> 34941 TA 03<\/p>\n\n\n\n

November 21, 2011 \u2013 NMED Approval Extension Request to Submit the Work Plan for Well SCI-4<\/a> 34936 TA 05<\/a><\/p>\n\n\n\n

November 17, 2011 \u2013 NMED GW R-61 Drilling Mud Pit Samples, Mortandad Canyon<\/a> 35029 TA 03<\/p>\n\n\n\n

November 15, 2011 \u2013 NMED Approval with Modification Work Plan and Final Design for Stabilization of the Sandia Canyon Wetland<\/a> 34919 TA 03<\/p>\n\n\n\n

November 10, 2011 \u2013 LANL Extension Request to Submit the WP for Well SCI-4<\/a> 34917 TA 05<\/p>\n\n\n\n

November 9, 2011 \u2013 NMED Spill Response Assessment and Closure of Release ID# 2011-312 Occurring at Monitoring Wells R-1 & R-61, Reported to NMED on August 15, 2011<\/a> 34905 TA 03<\/p>\n\n\n\n

November 9, 2011 \u2013 NMED NOI Response; Discharge Permit Required for Treated Well Development and Pump Test GW Discharge at Regional Monitoring Well R-28<\/a> 34903 TA 05<\/p>\n\n\n\n

November 3, 2011 \u2013 LANL Submittal: Fact Sheets for Regional Well R-62<\/a> 34891 TA 05<\/p>\n\n\n\n

September 30, 2011 \u2013 LANL 201256 TerranearPMC, March 2011. \u201cDrilling Plan for Regional Aquifer Well R-61,\u201d plan prepared for Los Alamos National Laboratory, Los Alamos, New Mexico. (TerranearPMC 2011, 201256)<\/a> 34805 General<\/p>\n\n\n\n

September 30, 2011 \u2013 LANL 204885 (Los Alamos National Laboratory), March 8, 2011. \u201cWaste Characterization Strategy Form for Installation of Regional Aquifer Well R-61,\u201d EP2011-0083, Los Alamos National Laboratory, Los Alamos, New Mexico. (LANL 2011, 204885)<\/a> 34808 General<\/p>\n\n\n\n

September 29, 2011 \u2013 WP and final Design for Stabilization of the Sandia Canyon Wetland<\/a> 34787 TA 03<\/p>\n\n\n\n

September 27, 2011 \u2013 LANL Submittal: Completion Report for Regional Aquifer Well R-61<\/a> 34777 TA 03<\/p>\n\n\n\n

September 22, 2011 \u2013 NMED Approval Extension Request Completion of Regional Groundwater Monitoring Well R-62<\/a> 34768 TA 05<\/p>\n\n\n\n

September 14, 2011 \u2013 NMED Approval with Modification Extension Request for Submittal of the Work Plan for Perched-Intermediate Well SCI-4<\/a> 34757 TA 03<\/p>\n\n\n\n

September 12, 2011 \u2013 NMED Email: Revision to Annular Fill: Well R-62 Schematic and Plan<\/a> 34750 TA 05<\/p>\n\n\n\n

September 2, 2011 \u2013 LANL Extension Request for Submittal of the WP for Perched Intermediate Well SCI-4<\/a> 34724 TA 03<\/p>\n\n\n\n

September 1, 2011 \u2013 NMED Email: R-62 Well Design<\/a> 34723 TA 05<\/p>\n\n\n\n

August 31, 2011 \u2013 LANL Email: R-62 Well Design Final <\/a> 34722 TA 05<\/p>\n\n\n\n

August 24, 2011 \u2013 LANL NOI to Discharge Treated GW from R-28 Development and Pumping Test<\/a> 34713 TA 05<\/p>\n\n\n\n

August 23, 2011 \u2013 LANL Periodic Monitoring Reports for Mortandad and Sandia, Pajarito, Los Alamos, Water Canyon\/Canon de Valle, and Ancho Watersheds<\/a> 34699 TA 00<\/p>\n\n\n\n

August 4, 2011 \u2013 LANL Extension Request to Submit the Final Design of Grade Control Structure to Stabilize the Eastern end of Sandia Canyon Wetland Required by Approval with Modifications to the Phase 2 IWP for Sandia Canyon<\/a> 34657 TA 03<\/p>\n\n\n\n

July 29, 2011 \u2013 NMED Approval with Modifications Completion Report for Reqional Aquifer Well R-50<\/a> 34645 TA 03<\/p>\n\n\n\n

June 14, 2011 \u2013 NMED Approval Extension Request for Completion of R-62 and SCI-3<\/a> 34580 TA 05<\/p>\n\n\n\n

June 9, 2011 \u2013 NMED Approval with Modification Interim Measures Work Plan for Stabilization of hte Sandia Canyon Wetland<\/a> 34571 TA 03<\/p>\n\n\n\n

June 9, 2011 \u2013 LANL Request for Extension for Completion of R-62 & SCI-3<\/a> 34572 TA 05<\/p>\n\n\n\n

May 25, 2011 \u2013 Fact Sheet for R-61<\/a> 34529 TA 05<\/p>\n\n\n\n

May 16, 2011 \u2013 LANL IM WP for Stabilization of the Sandia Canyon Wetland<\/a> 34512 TA 03<\/p>\n\n\n\n

May 6, 2011 \u2013 LANL Periodic Monitoring Reports for Mortandad, Sandia & Pajarito Watersheds<\/a> 34502 TA 03<\/p>\n\n\n\n

May 2, 2011 \u2013 NMED Notice of Agreement Force Majeure R-61 Well Completion<\/a> 35187 TA 03<\/p>\n\n\n\n

April 28, 2011 \u2013 LANL Update on April 25, 2011, Oral Notification of Delays at Well R-61 and Written Notice of Force Majeure<\/a> 34487 TA 03<\/p>\n\n\n\n

April 6, 2011 \u2013 NMED Email: R-61 Proposed Well Design<\/a> 34458 TA 03<\/p>\n\n\n\n

March 30, 2011 \u2013 NMED Approval with Modifications Extension Request Completion of Well R-61<\/a> 34446 TA 03 <\/p>\n\n\n\n

March 28, 2011 \u2013 NMED Status of Perched-Intermediate Well SCI-4<\/a> 35185 TA 03<\/p>\n\n\n\n

March 17, 2011 \u2013 LANL Extension Request for Completion of Well R-61<\/a> 34409 TA 03<\/p>\n\n\n\n

March 17, 2011 \u2013 LANL Status of Perched Intermediate Well SCI-4<\/a> 34407 TA 03<\/p>\n\n\n\n

March 9, 2011 \u2013 NMED Approval with Modification Drilling Work Plan for Perched-Intermediate Well SCI-3<\/a><\/p>\n\n\n\n

February 14, 2011 \u2013 LANL Periodic Monitoring Reports for Mortandad and Sandia, Pajarito, Los Alamos, Water Canyon\/Canon de Valle, Ancho, And White Rock<\/a> 34337 TA 00<\/p>\n\n\n\n

February 7, 2011 \u2013 NMED Approval Request for Extension for the Submittal of Work Plan to Stabilize the Eastern End of Sandia Canyon Wetland<\/a><\/p>\n\n\n\n

January 28, 2011 \u2013 LANL Extension Request for the Submittal of WP to Stabilize the Eastern End of Sandia Canyon Wetland Required by Approval with Modification to the Phase 2 IWP for Sandia Canyon<\/a> 34280 TA 03<\/p>\n\n\n\n

January 14, 2011 \u2013 NMED Review Periodic Monitoring Report for Mortandad and Sandia Watersheds, May 3 \u2013 May 19, 2010<\/a> 34237 TA 00<\/p>\n\n\n\n

January 4, 2011 \u2013 NMED Approval with Modification Phase II Investigation Work Plan for Sandia Canyon<\/a> 34230 TA 03<\/p>\n\n\n\n

2010<\/strong><\/p>\n\n\n\n

December 8, 2010 \u2013 NMED Approval with Modification Drilling WP for Regional Aquifer Well R-62<\/a> 34183 TA 05<\/p>\n\n\n\n

November 29, 2010 \u2013 LANL Periodic Monitoring Reports for Mortandad and Sandia and Pajarito Watersheds<\/a> 34136 TA 03<\/p>\n\n\n\n

November 18, 2010 \u2013 LANL Response to the Review of Periodic Monitoring Reports for Mortandad and Sandia Watersheds, August 3 \u2013 19, 2009, and November 2 \u2013 20, 2009<\/a> 34113 TA 00<\/p>\n\n\n\n

November 4, 2010 \u2013 NMED Approval with Modification Drilling WP for Regional Aquifer well R-61<\/a> 34135 TA 03<\/p>\n\n\n\n

October 29, 2010 \u2013 LANL WP for R-62<\/a> 34064 TA 05<\/p>\n\n\n\n

October 15, 2010 \u2013 LANL Response to the Review of Periodic Monitoring Reports for Mortandad and Sandia Watersheds, August 3 \u2013 19, 2009, and November 2 \u2013 20, 2009<\/a> 34042 TA 00<\/p>\n\n\n\n

October 15, 2010 \u2013 Submittal: WP for Well R-61<\/a> 34040 TA 03<\/p>\n\n\n\n

October 14, 2010 \u2013 NMED Review of Periodic Monitoring Report for Mortandad and Sandia Watersheds, January 25 \u2013 February 12, 2010<\/a> 35446 TA 03<\/p>\n\n\n\n

September 10, 2010 \u2013 NMED Review of Periodic Monitoring Report for Mortandad and Sandia Watersheds, August 3 \u2013 August 19, 2009, and November 2 \u2013 November 29, 2009<\/a> 33946 TA 00<\/p>\n\n\n\n

August 19, 2010 \u2013 Periodic Monitoring Reports for Mortandad and Sandia, Pajarito, Ancho Water & White Rock Canyons<\/a> 33877 TA 03 <\/p>\n\n\n\n

July 30, 2010 \u2013 LANL 108564 TerranearPMC, October 2009. \u201cDrilling Plan for Regional Aquifer Well R-50,\u201d plan prepared for LANL<\/a> 33850 General<\/p>\n\n\n\n

July 30, 2010 \u2013 LANL Reference 107445, November 2, 2009. Waste Characterization Strategy Form for Regional Well for Chromium Investigation, R-50 (Mortandad Canyon), Regional Groundwater Well Installation and Corehole Drilling, Los Alamos, New Mexico. (LANL 2009, 107445)<\/a> 33847 General<\/p>\n\n\n\n

July 30, 2010 \u2013 LANL Phase 2 IWP for Sandia Canyon<\/a> 33836 TA 03<\/p>\n\n\n\n

July 13, 2010 \u2013 LANL Completion Report for Regional Aquifer Well R-50<\/a> 33796 TA 03<\/p>\n\n\n\n

July 2, 2010 \u2013 NMED Spill Response Assessment and Closure of Release ID# 2010-263 Occurring at Monitoring Well R-50<\/a> 33788 TA 03<\/p>\n\n\n\n

June 24, 2010 \u2013 LANL Fax; 15 Day Sampling Notification for Lower Sandia Canyon Aggregate Area Investigation<\/a> 33734 TA 53<\/p>\n\n\n\n

June 1, 2010 \u2013 LANL IR for Upper Sandia Canyon Aggregate Area<\/a> 33626 TA 03<\/p>\n\n\n\n

May 25, 2010 \u2013 LANL Periodic Monitoring Reports for Mortandad and Sandia, Pajarito, and Los Alamos Watersheds<\/a> 33615 TA 00<\/p>\n\n\n\n

May 14, 2010 \u2013 NMED Spill Response Assessment and Closure of Release ID#2010-252 Occurring at Monitoring Well SCI-2, Discovered on March 15, 2010<\/a> 33599 TA 53<\/p>\n\n\n\n

May 13, 2010 \u2013 NMED Approval Request for Extension for the Submittal of the Phase II Investigation Work Plan for Sandia Canyon<\/a> 33591 TA 03<\/p>\n\n\n\n

May 3, 2010 \u2013 LANL Extension Request for Phase 2 IWP for Sandia Canyon<\/a> 33503 TA 03<\/p>\n\n\n\n

March 15, 2010 \u2013 LANL Well Completion Summary Fact Sheet for R-50<\/a> 33263 TA 03<\/p>\n\n\n\n

February 26, 2010 \u2013 LANL Periodic Monitoring Reports for Mortandad and Sandia, Ancho, Water Canyon\/Canon de Valle, Pajarito and White Rock Canyons<\/a> 33169 TA 03<\/p>\n\n\n\n

February 9, 2010 \u2013 NMED Approval with Modification Investigation Report for Sandia Canyon<\/a> 33065 TA 03<\/p>\n\n\n\n

January 5, 2010 \u2013 NMED Email: R-50 Abandoned Hole Backfill Proposal<\/a> 32338 TA 03<\/p>\n\n\n\n

2010<\/strong><\/p>\n\n\n\n

December 22, 2009 \u2013 NMED Approval Completion Report for Reqional Aquifer Well R-41<\/a><\/p>\n\n\n\n

December 22, 2009 \u2013 NMED Approval Request Extension of Time for the Completion of Well R-50<\/a> 32336 TA 03<\/p>\n\n\n\n

December 15, 2009 \u2013 LANL Extension Request for the Completion of Well R-50<\/a> 32302 TA 03<\/p>\n\n\n\n

November 30, 2009 \u2013 LANL Periodic Monitoring Reports for Mortandad and Sandia, Los Alamos, & Pajarito Watersheds<\/a> 32254 TA 00<\/p>\n\n\n\n

November 24, 2009 \u2013 NMED Approval Completion Report for Regional Aquifer Well R-45<\/a><\/p>\n\n\n\n

October 30, 2009 \u2013 LANL Reference 107033 Peterson, M.L., G.E.J. Brown, G.A. Parks, and C.L. Stein, 1997. \u201cDifferential Redox and Sorption of Cr(III\/VI) on Natural Silicate and Oxide Minerals: EXAFS and XANES Results,\u201d Geochimica et Cosmochimica Acta, Vol. 61, No. 16, pp. 3399\u20133412. (Peterson et al. 1997, 107033)<\/a> 32178 General<\/p>\n\n\n\n

October 29, 2009 \u2013 NMED Approval with Modification Drilling Work Plan for Regional Aquifer Well R-50<\/a> 32124 TA 03<\/p>\n\n\n\n

October 29, 2009 \u2013 NMED Approval with Modification of Completion Report for Reqional Aquifer Well R-44<\/a><\/p>\n\n\n\n

October 16, 2009 \u2013 LANL Drilling WP for Regional Aquifer R-50<\/a> 32102 TA 03<\/p>\n\n\n\n

October 15, 2009 \u2013 LANL IR for Sandia Canyon<\/a> 32101 TA 03<\/p>\n\n\n\n

October 2, 2009 \u2013 LANL Fax: 15 Day Sampling Notification for the Upper Sandia Canyon Aggregate Area<\/a> 32081 TA 03<\/p>\n\n\n\n

August 31, 2009 \u2013 LANL Periodic Monitoring Reports for Mortandad and Sandia, Pajarito, Water, Ancho & White Rock Canyons<\/a> 31935 TA 03<\/p>\n\n\n\n

August 31, 2009 \u2013 NMED Modification of Approval of Drilling WP for Los Alamos & Pueblo Canyons GW Monitoring Well Installations; Direction to Install Chromium Investigation Well R-50<\/a> 31939 TA 00<\/p>\n\n\n\n

September 26, 2008 \u2013 LANL Submittal: Well Completion Summary Fact Sheets for SCI-2 (within R-43)<\/a> 30125 TA 03<\/p>\n\n\n\n

August 6, 2009 \u2013 NMED Notice of Approval for the NOD Response for the IWP for Lower Sandia Canyon Aggregate Area and Revision 1<\/a> 31875 TA 53<\/p>\n\n\n\n

July 28, 2009 \u2013 NMED Approval of Request for Extension to Submit the Sandia Canyon Investigation Report<\/a> 31850 TA 03<\/p>\n\n\n\n

July 20, 2009 \u2013 LANL Submittal: NOD Response for the IWP for Lower Sandia Canyon Aggregate Area and Revision 1<\/a> 31842 TA 53<\/p>\n\n\n\n

July 17, 2009 \u2013 LANL Extension Request for the Submittal of the Sandia Canyon IR<\/a> 31832 TA 03<\/p>\n\n\n\n

June 23, 2009 \u2013 NMED NOD: IWP for Lower Sandia Canyon Aggregate Area<\/a> 31706 TA 53<\/p>\n\n\n\n

May 29, 2009 \u2013 LANL Periodic Monitoring Reports for Ancho, Mortandad, Sandia, Pajarito & Los Alamos Canyons<\/a> 31660 TA 00<\/p>\n\n\n\n

April 30, 2009 \u2013 LANL IWP & Historical IR for Lower Sandia Canyon Aggregate Area<\/a> 31518 TA 53<\/p>\n\n\n\n

March 18, 2009 \u2013 NMED Review of Periodic Monitoring Report for Sandia Watershed, February 6 \u2013 February 26, 2008<\/a> 30940 TA 03<\/p>\n\n\n\n

March 16, 2009 \u2013 LANL Completion Report for Wells R-43 & SCI-2<\/a> 30644 TA 03<\/p>\n\n\n\n

February 27, 2009 \u2013 LANL Periodic Monitoring Reports for Mortandad, Sandia, Los Alamos, Pajarito, White Rock, & Water Canyons<\/a> 30061 TA 00<\/p>\n\n\n\n

January 30, 2009 \u2013 LANL Reference 101914 , May 2008. Waste Characterization Strategy Form for the Chromium Wells (R-42 and SCI-2\/R-43) Regional Groundwater Well Installation and Corehole Drilling, Los Alamos, New Mexico. (LANL 2008, 101914)<\/a> 31267 General<\/p>\n\n\n\n

January 30, 2009 \u2013 LANL 103940 TerranearPMC, June 2008. \u201cDrilling Plan for Regional Aquifer Well R-42,\u201d plan prepared for Los Alamos National Laboratory, Los Alamos, New Mexico. (TerranearPMC 2008, 103940)<\/a> 31269 General<\/p>\n\n\n\n

January 24, 2009 \u2013 LANL Completion Report for Regional Aquifer Well R-42<\/a> 30155 TA 05<\/p>\n\n\n\n

2008<\/strong><\/p>\n\n\n\n

December 19, 2008 \u2013 NMED Approval: NOD Response of Periodic Monitoring Report for Sandia Watershed, November 7 \u2013 November 19, 2007<\/a> 30135 TA 03<\/p>\n\n\n\n

December 8, 2008 \u2013 NMED Approval of Request for Extension to Submit the Sandia Canyon Investigation Report<\/a> 30133 TA 03<\/p>\n\n\n\n

November 26, 2008 \u2013 LANL Periodic Monitoring Report for Mortandad, Sandia, Pajarito & Ancho Canyons<\/a> 30132 TA 03<\/p>\n\n\n\n

November 26, 2008 \u2013 LANL Extension Request for Sandia Canyon IR<\/a> 30131 TA 03<\/p>\n\n\n\n

November 24, 2008 \u2013 LANL NOD Response of Periodic Monitoring Report for Sandia Watershed, November 7 \u2013 November 19, 2007<\/a> 30130 TA 03<\/p>\n\n\n\n

October 29, 2008 \u2013 NMED NOD: Periodic Monitoring Report for Sandia Watershed, November 7 \u2013 19, 2007<\/a> 30128 TA 03<\/p>\n\n\n\n

September 30, 2008 \u2013 Los Alamos National Laboratory Update on the Chromium Project, August 2008, Los Alamos National Laboratory document LA-UR-08-5584, Los Alamos, New Mexico. (LANL 2008, 102910)<\/a> 31195 General<\/p>\n\n\n\n

September 26, 2008 \u2013 LANL Periodic Monitoring Reports for Mortandad, Sandia, Pajarito, Water & White Rock Canyons<\/a> 30124 TA 03<\/p>\n\n\n\n

September 26, 2008 \u2013 LANL Well Completion Summary Fact Sheets for SCI-2 (within R-43)<\/a> 30125 TA 03<\/p>\n\n\n\n

September 26, 2008 \u2013 LANL Well Completion Summary Fact Sheets for R-42<\/a> 30151 TA 05<\/p>\n\n\n\n

September 24, 2008 \u2013 LANL Email: Request to Omit Bentonite Grout from R-43 Annular Fill Material<\/a> 31425 TA 03<\/p>\n\n\n\n

August 12, 2008 \u2013 NMED Approval with Direction Upper Sandia Canyon Aggregate Area IWP<\/a> 30120 TA 03<\/p>\n\n\n\n

July 31, 2008 \u2013 LANL Periodic Monitoring Reports for Mortandad, Sandia, Pajarito & Los Alamos Canyons<\/a> 30038 TA 00<\/p>\n\n\n\n

July 31, 2008 \u2013 LANL Submittal: Fate and Transport Investigations Update for Chromium Contamination in Sandia Canyon<\/a> 30119 TA 03<\/p>\n\n\n\n

July 31, 2008 \u2013 LANL Reference 102411 Sikora, E. R., T. M. Johnson, and T. D. Bullen, 2008. \u201cMicrobial Mass-Dependent Fractionation of Chromium Isotopes,\u201d Geochimica et Cosmochimica Acta, Vol. 72, pp. 3631-3641. (Sikora et al. 2008, 102411)<\/a> 31126 General<\/p>\n\n\n\n

July 31, 2008 \u2013 LANL Reference 102412 Izbicki, J. A., J. W. Ball, T. D. Bullen, and S. J. Sutley, 2008. \u201cChromium, Chromium Isotopes and Selected Trace Elements, Western Mojave Desert, USA,\u201d Applied Geochemistry, Vol. 23, pp. 1325-1352. (Izbicki et al. 2008, 102412)<\/a> 31127 General<\/p>\n\n\n\n

July 31, 2008 \u2013 LANL Reference 102413 Schoenberg, R., S. Zink, M. Staubwasser, and F. von Blanckenburg, 2008. \u201cThe Stable Cr Isotope Inventory of Solid Earth Reservoirs Determined by Double Spike MC-ICP-MS,\u201d Chemical Geology, Vol. 249, pp. 294-306. (Schoenberg et al. 2008, 102413)<\/a> 31128 General<\/p>\n\n\n\n

July 31, 2008 \u2013 LANL Reference 102459 Johnson, T., April 4, 2008. Re: Chromium isotope sample IDs. E-mail message to J. Heikoop (LANL) and J. Glessner from T. Johnson (University of Illinois), Urbana, Illinois. (Johnson 2008, 102459)<\/a> 31129 General<\/p>\n\n\n\n

July 31, 2008 \u2013 LANL Reference 102460 Johnson, T., June 17, 2008. Re: R-35a. E-mail message to J. Heikoop (LANL), J. Glessner, and P. Longmire (LANL) from T. Johnson (University of Illinois), Urbana, Illinois. (Johnson 2008, 102460)<\/a> 31130 General<\/p>\n\n\n\n

July 31, 2008 \u2013 LANL Reference 102461 Johnson, T., July 12, 2008. Re: need advice on report. E-mail message to J. Heikoop (LANL) and J. Glessner from T. Johnson (University of Illinois), Urbana, Illinois. (Johnson 2008, 102461)<\/a> 31131 General<\/p>\n\n\n\n

July 31, 2008 \u2013 LANL Reference 102462 Gouze, P., T. Le Borgne, R. Leprovost, G. Lods, T. Poidras, and P. Pezard, 2008. \u201cNon-Fickian Dispersion in Porous Media: 1. Multicale Measurements Using Single-Well Injection Withdrawal Tracer Tests,\u201d Water Resources Research, Vol. 44, W06426, 15 pp. (Gouze et al. 2008, 102462)<\/a> 31132 General<\/p>\n\n\n\n

July 31, 2008 \u2013 LANL Reference 102463 Le Borgne, T., and P. Gouze, 2008. \u201cNon-Fickian Dispersion in Porous Media: 2. Model Validation from Measurements at Different Scales,\u201d Water Resources Research, Vol. 44, W06427, 10 pp. (Le Borgne and Gouze 2008, 102463)<\/a> 31133 General<\/p>\n\n\n\n

July 31, 2008 \u2013 LANL Reference 102464 Johnson, T. M., and E. Berna, 2008. \u201cCr Isotopes Reveal Progress of Natural Reduction of Contaminant Cr(VI) in a Groundwater System,\u201d Goldschmidt Conference Abstracts, p. A437. (Johnson and Berna 2008, 102464)<\/a> 31134 General<\/p>\n\n\n\n

July 31, 2008 \u2013 LANL Reference 102465 Gelhar, L.W., C. Welty, and K.R. Rehfeldt, July 1992. \u201cA Critical Review of Data on Field-Scale Dispersion in Aquifers,\u201d Water Resources Research, Vol. 28, No. 7, pp. 1955-1974. (Gelhar et al. 1992, 102465)<\/a> 31135 General<\/p>\n\n\n\n

July 31, 2008 \u2013 LANL Reference 102466 Miller, T. A., V. V. Vesselinov, P. H. Stauffer, K. H. Birdsell, and C. W. Gable, 2007. \u201cIntegration of Geologic Frameworks in Meshing and Setup of Computational Hydrogeologic Models, Pajarito Plateau, New Mexico,\u201d New Mexico Geological Society Guidebook: 58th Field Conference, Geology of the Jemez Mountains Region II, pp. 121\u2013128. (Miller et al. 2007, 102466)<\/a> 31136 General<\/p>\n\n\n\n

July 31, 2008 \u2013 LANL Reference 102495 Chao, T. T., 1972. \u201cSelective Dissolution of Manganese Oxides from Soils and Sediments with Acidified Hydroxylamine Hydrochloride,\u201d Soil Science Society of America Proceedings, Vol. 36, pp. 764-768. (Chao 1972, 102495)<\/a> 31137 General<\/p>\n\n\n\n

July 25, 2008 \u2013 LANL NOD Response for the IWP for Upper Sandia Canyon Aggregate Area and Revision 1<\/a> 30118 TA 03<\/p>\n\n\n\n

June 25, 2008 \u2013 NMED NOD: IWP for Upper Sandia Canyon Aggregate Area<\/a> 30117 TA 03<\/p>\n\n\n\n

May 8, 2008 \u2013 LANL Approval with Modification; Drilling WP for Nature and Extent of chromium Contamination in GW Investigations<\/a> 30531 TA 54<\/p>\n\n\n\n

April 30, 2008 \u2013 LANL Submittal: Drilling WP for Nature and Extent of Chromium Contamination in GW Investigations<\/a> 30116 TA 03<\/p>\n\n\n\n

March 31, 2008 \u2013 LANL IWP and the Historical IR for Upper Sandia Canyon Aggregate Area<\/a> 30114 TA 03<\/p>\n\n\n\n

March 18, 2008 \u2013 NMED Investigation of chromium Contamination in Regional GW<\/a> 30146 TA 05<\/p>\n\n\n\n

February 29, 2008 \u2013 LANL Periodic Monitoring Reports for Sandia, Mortandad, Los Alamos, White Rock & Pajarito Watersheds<\/a> 30018 TA 00<\/p>\n\n\n\n

2007<\/strong><\/p>\n\n\n\n

December 17, 2007 \u2013 NMED Approval with Direction WP for Geochemical Characterization and Drilling for Fate and Transport of contaminates Originating in Sandia Canyon<\/a> 30923 General<\/p>\n\n\n\n

November 19, 2007 \u2013 LANL WP for Geochemical Characterization and Drilling for Fate and Transport of contaminants Originating in Sandia Canyon<\/a> 30096 TA 03<\/p>\n\n\n\n

October 29, 2007 \u2013 NMED Notice of Approval Mortandad Canyon Groundwater Monitoring Well Network Evaluation, Revision 1<\/a><\/p>\n\n\n\n

October 22, 2007 \u2013 LANL Periodic Monitoring Report for Sandia Watershed, February 13 \u2013 25, 2007 & June 4 \u2013 24, 2007 <\/a>30091 TA 03<\/p>\n\n\n\n

October 17, 2007 \u2013 NMED NOD; Fate and Transport Modeling Report for Chromium Contamination from Sandia Canyon<\/a> 30090 TA 03<\/p>\n\n\n\n

September 19, 2007 \u2013 LANL 098200 Bennett, K., D. Keller, and R. Robinson, 2001. \u201cSandia Wetland Evaluation,\u201d Los Alamos National Laboratory document LA-UR-01-66, Los Alamos, New Mexico. (Bennett et al. 2001, 098200)<\/a> 30810 General<\/p>\n\n\n\n

September 14, 2007 \u2013 LANL Submittal: Fate & Transport Modeling Report for chromium Contamination from Sandia Canyon<\/a> 30004 TA 00<\/p>\n\n\n\n

September 14, 2007 \u2013 LANL Reference 098074 Bain, D. J., and T .D. Bullen, 2004. \u201cExperimental Determination of Isotopic Fractionation of Chromium(III) During Oxidation by Manganese Oxides,\u201d Eos Transactions, American Geophysical Union, Vol. 85, No. 47, Fall Meeting Supplement, Abstract H42C-03. (Bain and Bullen 2004, 098074)<\/a> 30783 General<\/p>\n\n\n\n

September 14, 2007 \u2013 LANL Reference 098081 Ellis, A. S., T. M. Johnson, and T. D. Bullen, March 15, 2002. \u201cChromium Isotopes and the Fate of Hexavalent Chromium in the Environment,\u201d Science, Vol. 295, pp. 2060-2062. (Ellis et al. 2002, 098081)<\/a> 30785 General<\/p>\n\n\n\n

September 14, 2007 \u2013 LANL Reference 098086 Ellis, A. S., T. M. Johnson, and T. D. Bullen, 2004. \u201cUsing Chromium Stable Isotope Ratios to Quantify Cr(VI) Reduction: Lack of Sorption Effects,\u201d Environmental Science & Technology, Vol. 38, No. 13, pp. 3604- 3607. (Ellis et al. 2004, 098086)<\/a> 30786 General<\/p>\n\n\n\n

September 14, 2007 \u2013 LANL Reference 098088 Kitchen, J. W., T. M. Johnson, and T. D. Bullen, 2004. \u201cChromium Stable Isotope Fractionation During Abiotic Reduction of Hexavalent Chromium,\u201d Eos Transactions, American Geophysical Union, Vol. 85, No. 47, Fall Meeting Supplement, Abstract V51A-0519 (Kitchen et al. 2004, 098088)<\/a> 30788 General<\/p>\n\n\n\n

September 14, 2007 \u2013 LANL Reference 098101 Sikora, E. R., T. M. Johnson, and T. D. Bullen, 2004. \u201cChromium Stable Isotope Fractionation During Bacterial Reduction of Hexavalent Chromium,\u201d Eos Transactions, American Geophysical Union, Vol. 85, No. 17, Joint Assembly Supplement, Abstract H43E-05. (Sikora et al. 2004, 098101)<\/a> 30789 General<\/p>\n\n\n\n

August 31, 2007 \u2013 LANL Reference 097256 EPA (U. S. Environmental Protection Agency), October 2000. \u201cIn Situ Treatment of Soil and Groundwater Contaminated with Chromium,\u201d Technical Resource Guide, EPA\/625\/R-00\/005, Office of Research and Development, Washington, D. C. (EPA 2000, 097256)<\/a> 30747 General<\/p>\n\n\n\n

August 6, 2007 \u2013 NMED Approval with Direction Mortandad Canyon Groundwater Monitoring Network Evaluation<\/a><\/p>\n\n\n\n

June 15, 2007 \u2013 NMED Press Release; Environment Dept. Reaches $251,870 Settlement with LANL on Failure to Report Chromium Contamination in GW<\/a> 14776 TA 05<\/p>\n\n\n\n

June 14, 2007 \u2013 NMED Settlement Agreement \u2013 Notice of Violation dated October 25, 2006<\/a><\/p>\n\n\n\n

April 6, 2007 \u2013 LANL Reference 95189, Oral communication Record between Dr. tom Johnson and Jeff Heikoop Regarding Chromium Isotopes<\/a> 14655 General<\/p>\n\n\n\n

March 5, 2007 \u2013 NMED Approval with Direction for the Addendum to the Work Plan for Sandia Canyon and Canada del Buey<\/a> 2864 TA 05<\/p>\n\n\n\n

February 20, 2007 \u2013 LANL 094042 Kleinfelder, February 9, 2005. \u201cRevision 1, Well R-28 Completion Report,\u201d report prepared for Los Alamos National Laboratory, Project No. 37151\/16.12, Albuquerque, New Mexico. (Kleinfelder 2005, 094042)<\/a> 14597 General<\/p>\n\n\n\n

2006<\/strong><\/p>\n\n\n\n

December 27, 2006 \u2013 NMED Notice of Approval for the Interim Measures Investigation Report for Chromium Contamination in Groundwater<\/a> 2862 TA 05<\/p>\n\n\n\n

November 30, 2006 \u2013 LANL Submittal: Interim Measures IR for Chromium Contamination in GW <\/a>2861 TA 05<\/p>\n\n\n\n

November 30, 2006 \u2013 LANL Reference 91684 Raj, D., and J. M. Zachara, May 1986.\u201d Geochemical Behavior of Chromium Species,\u201d Electric Power Research Institute. (Rai and Zachara 1986, 91684)<\/a> 14466 General<\/p>\n\n\n\n

November 1, 2006 \u2013 LANL Email: Proposed Fix for Cr IM Well SCI-1\/SCC-1 (2)<\/a> 5833 TA 03<\/p>\n\n\n\n

November 1, 2006 \u2013 LANL Email: Proposed Fix for Cr IM Well SCI-1\/SCC-1<\/a> 5832 TA 03<\/p>\n\n\n\n

September 23, 2006 \u2013 Fax: Notice of Violation; Chromium contamination at R-28<\/a> 2860 TA 05<\/p>\n\n\n\n

September 18, 2006 \u2013 LANL Email: Chromium Field Campaign Update \u2013 9\/15<\/a> 2859 TA 05<\/p>\n\n\n\n

September 9, 2006 \u2013 NMED Notice of Violation<\/a> 2858 TA 05<\/p>\n\n\n\n

September 9, 2006 \u2013 NMED Press Release: Environment Dept. Proposes $795,000 Penalty for Chromium Contamination<\/a> 2857 TA 05<\/p>\n\n\n\n

August 28, 2006 \u2013 LANL Response to the Approval with Modifications Letter, Dated May 8, 2006, for the Interim Measures WP for Chromium Contamination in GW<\/a> 2856 TA 05<\/p>\n\n\n\n

July 19, 2006 \u2013 LANL Email: 15-Day Notification of Field Activities \u2013 Drilling in Sandia for Cr IM WP<\/a> 5824 TA 03<\/p>\n\n\n\n

July 21, 2006 \u2013 NMED Response to Request for the Use of EPA Method 6020 for Analysis of Filtered Total Chromium as a Substitute for US EPA Method 7199 for Hexavalent Chromium<\/a> 14188 General<\/p>\n\n\n\n

June 28, 2006 \u2013 LANL Request for the Use of EPA Method 6020 for Analysis of Filtered Total Chromium as a Substitute for Using EPA Method 7199 for Hexavalent Chromium<\/a> 14168 General<\/p>\n\n\n\n

June 14, 2006 \u2013 LANL Email: Response to Request Regarding the Total Cr vs. Hexavalent Cr Sampling, IM WP<\/a> 2852 TA 05<\/p>\n\n\n\n

May 19, 2006 \u2013 LANL Response to HWB\u2019s Information Request for analytical Reports and Correspondence Pertaining to Regional Aquifer Well R-28<\/a> 2850 TA 05<\/p>\n\n\n\n

May 12, 2006 \u2013 NMED Press Release: Environment Dept. Approves LANL WP to Investigate Chromium Contaminated GW<\/a> 2849 TA 05<\/p>\n\n\n\n

May 5, 2006 \u2013 Approval with Modifications for the IM WP for Chromium Contamination in GW<\/a> 2848 TA 05<\/p>\n\n\n\n

May 2, 2006 \u2013 NMED Request for Analytical Lab Reports and All Correspondence submitted to NMED Pertaining to Regional Aquifer Well R-28<\/a> 2847 TA 05<\/p>\n\n\n\n

March 31, 2006 \u2013 Submittal of Interim Measures WP for Chromium Contamination in Groundwater<\/a> 2846 TA 05<\/p>\n\n\n\n

2005<\/strong><\/p>\n\n\n\n

December 29, 2005 \u2013 NMED Interim Measures WP Requirement GW Contaminants Detected in the Regional Aquifer at R-28<\/a> 2845 TA 05<\/p>\n\n\n\n

2004<\/strong><\/p>\n\n\n\n

December 23, 2004 \u2013 LANL Sampling Notification for Wells R-14, R-1, R-2, R-4, R-26, R-28, R-34, CdV-R-15-3, CdV-R-37-2 and CdV-R-16- 1(i) <\/a> 7707 TA 00<\/p>\n\n\n\n

May 3, 2004 \u2013 LANL Completion Report for Characterization Well R-28<\/a> 2844 TA 05<\/p>\n\n\n\n

April 23, 2004 \u2013 LANL Management of Drill Cuttings from Wells R-1, R-28, CdV-16-1, CdV-16-2 and CdV-16-3<\/a> 2843 TA 05<\/p>\n\n\n\n

March 2, 2004 \u2013 LANL Fact Sheet for R-28<\/a> 2841 TA 05<\/p>\n\n\n\n

2003<\/strong><\/p>\n\n\n\n

November 13, 2003 \u2013 LANL SAP for Drilling and Testing Characterization Wells R-1, R-28, R-33 & R-34<\/a> 3278 TA 01<\/p>\n","protected":false},"excerpt":{"rendered":"

Los Alamos National Laboratory (LANL) Sandia and Mortandad Canyons Chromium Groundwater Contamination 2019 October 3, 2019 \u2013 NMED Semiannual Progress Report on Chromium Plume Control Interim Measure Performance TA-05 39134 September 24, 2019 \u2013 LANL Submittal of the Supplemental Work Plan for Pilot-Scale Amendments Testing for Chromium in Groundwater beneath Mortandad Canyon September 18, 2019 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-63","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-json\/wp\/v2\/pages\/63","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-json\/wp\/v2\/comments?post=63"}],"version-history":[{"count":2,"href":"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-json\/wp\/v2\/pages\/63\/revisions"}],"predecessor-version":[{"id":476,"href":"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-json\/wp\/v2\/pages\/63\/revisions\/476"}],"wp:attachment":[{"href":"https:\/\/www.env.nm.gov\/hazardous-waste\/wp-json\/wp\/v2\/media?parent=63"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}