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LANL Chromium Groundwater Contamination

 

Los Alamos National Laboratory (LANL)

Sandia and Mortandad Canyons Chromium Groundwater Contamination


2017

July 31, 2017 – NMED Approval Pilot-Scale Amendments Testing Work Plan for Chromium in Groundwater Beneath Mortandad Canyon  TA05  38153

July 27, 2017 – LANL Fact Sheets for CrIN-6  TA05 38145

July 21, 2017 – NMED GWQB Discharge Permit Amendment, Los Alamos National Laboratory Underground Injection Control Wells, DP-1835  TA05 38147

July 17, 2017 – NMED Approval Chromium Extraction Well Evaluation Report and Recommendations for CrEX-2  TA05 38129

July 13, 2017 – LANL As-Built Specifications for CrEX-2, Discharge Permit DP-1835, Class V Underground Injection Control Wells  TA05 38130

July 13, 2017 – LANL Notification of Commencement of Injection at CrIN-1, CrIN-2, and CrIN-3, Discharge Permit DP-1835, Class V Underground Injection Control Wells   TA05 38128

July 11, 2017 – LANL Pilot-Scale Amendments Testing Work Plan for Chromium in Groundwater beneath Mortandad Canyon   TA05 38116

June 28, 2017 – LANL Discharge Permit 1835 Proposed Updates  TA03 38120

June 1, 2017 – LANL Fact Sheets for CrEX-2  TA05 38072

May 31, 2017 – LANL Quarterly Report – 2017 Quarter 1, Discharge Permit DP-1835, Class V Underground Injection Control Wells  TA03 38093

May 15, 2017 – LANL Annual Periodic Monitoring Reports for the Material Disposal Area C, Technical Area 54, and Chromium Investigation Monitoring Groups  TA03 38050

May 12, 2017 – 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  TA05 38057

April 27, 2017 – LANL 2016 Sandia Wetland Performance Report  TA03 38011

April 25, 2017 – LANL Chromium Extraction Well Evaluation Report and Recommendations for CrEX-2  TA03 38006

March 31, 2017 – NMED GWQB Response to Notice of Intent to Discharge; DP-1835  TA03 37985

March 28, 2017 – 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   TA05  37956

February 27, 2017 – LANL Quarterly Report – 2016 Quarter 4, Discharge Permit DP-1835  TA03 37929

February 20, 2017 – NMED GWQB Response to Notice of Intent to Discharge; DP-1835  TA03 37922

February 16, 2017 – 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  TA03 37920

February 13, 2017 – LANL Work Plan #3 Discharge Report, Treatment and Land Application of Groundwater from Mortandad and Sandia Canyons, DP-1793  TA05 37916

January 30, 2017 – LANL Field Summary Report for Alluvial Piezometers in Sandia Canyon  TA72 37871

January 19, 2017 – LANL Notice of Intent to Conduct a Tracer Study at Los Alamos National Laboratory  TA03 37900

January 4, 2017 – NMED Approval Drilling Work Plan for Groundwater Injection Well CrIN-6  TA-05 37843

2016

December 13, 2016 – LANL Drilling Work Plan for Groundwater Injection Well CrIN-6  TA-05 37822

December 9, 2016 – LANL Mechanical Integrity Testing of Injection Wells CrIN-1, CrIN-2, and CrIN-3, Discharge Permit DP-1835, Class V Underground Injection Control Wells   TA-05 37828

December 7, 2016 – NMED GWQB Confirmation of Compliance with Discharge Permit 1835 Pre-Discharge Requirements, Los Alamos National Laboratory Underground Injection Control Wells TA03 37815

November 28, 2016 – NMED Approval with Modifications 2015 Sandia Wetland Performance Report TA-03 37809

November 22, 2016 – NMED Periodic Monitoring Report for Chromium Investigation Monitoring Group, Second Quarter, Monitoring Year 2016 TA-03 37811

November 18, 2016 – NMED Approval with Modifications 2015 Sandia Wetland Performance Report  TA03 37809

November 15, 2016 – 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  TA-03 37804

November 10, 2016 – LANL Mechanical Integrity Testing of Injection Wells CrIN-4 and CrIN-5, Discharge Permit DP-1835, Class V Underground Injection Control Wells TA-03 37803

November 10, 2016 – LANL Documentation of Treatment Efficiency, Discharge Permit DP-1835, Class V Underground Injection Control Wells TA-03 37801

November 3, 2016 – LANL Notification of Commencement of Injection, Discharge Permit DP-1835, Class V Underground Injection Control Wells TA-03 37784

October 17, 2016 – NMED GWQB Mechanical Integrity Testing, Los Alamos National Laboratory Underground Injection Control Wells, Discharge Permit 1835 33781

October 14, 2016 – LANL Proposed Test Method, Distribution Piping, Discharge Permit DP-1835, Class V Underground Injection Control Wells TA-03 37757

October 11, 2016 – NMED Approval Completion Report for Groundwater Extraction Well CrEX-3  TA-05 37751

October 4, 2016 – LANL Chromium Project Field Work Implementation Schedule

September 26, 2016 – LANL Fact Sheets for CrIN-3

September 6, 2016 – LANL Completion Report for Groundwater Extraction Well CrEX-3

August 31, 2016 – NMED GWQB Discharge Permit Issuance, LANL Underground Injection Control Wells, Discharge Permit 1835

August 24, 2016 – 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

August 18, 2016 – LANL Submittal of the Fact Sheets for CrIN-5

August 11, 2016 – LANL Submittal of the Fact Sheets for CrIN-1

August 11, 2016 – NMED Request to Discontinue the Monthly Email Notification on the Progress of the Office of the State Engineer TA-03 37719

August 4, 2016 – LANL Filing of 100% Design Plans and Specification, Discharge Permit Application DP-1835, Class V Underground Injection Control Wells TA-7711

June 30, 2016 – LANL Request to Discontinue the Monthly Email Notification on the Progress of the Office of the State Engineer Application Process

June 27, 2016 – LANL Submittal of the Facts Sheets for CrIN-4  37590

June 14, 2016 – LANL Submittal of the Fact Sheets for Injection Well CrIN-2 37578

June 3, 2016 – NMED Approval Second Request for Extension to Initiate Pumping Tests at CrEX-1 and CrEX-3

May 25, 2016 – LANL Second Request for Extension to Initiate Pumping Tests at CrEX-1 and CrEX-3

May 25, 2016 – LANL Amendment to Discharge Permit Application DP-1835

May 25, 2016 – LANL Second Request for Extension to Initiate Pumping Tests at CrEX-1 and CrEX-3

May 24, 2016 – 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

May 17, 2016 – LANL Submittal of the Periodic Monitoring Reports for Chromium Investigation, Technical Area 54, and Material Disposal Area C Monitoring Groups

May 12, 2016 – LANL Additional Information for Discharge Permit Application DP-1835

May 4, 2016 – LANL Submittal of the Fact Sheets for CrEX-3 37557

May 3, 2016 – NMED Approval Request for Extension to Complete Regional Aquifer Well R-61r

May 3, 2016 – NMED Approval Request for an Extension to Conduct Pumping Tests at CrEX-1 and CrEX-3

May 2016 – LANL Field Implementatin Plan for Alluvial Piezometers in Sandia Canyon  General 38024

April 28, 2016 – LANL Submittal of the 2015 Sandia Wetland Performance Report

April 20. 2016 – LANL Request for Extension to Complete Regional Aquifer Well R-61r

April 20, 2016 – LANL Request for Extension to Conduct Pumping Tests at CrEX-1 and CrEX-3

March 18, 2016 – NMED GWQB Hearing Determination Request, DP-1835, Class V Underground Injection Control  TA03 37523

March 17, 2016 – NMED Approval with Modification Drilling Work Plan for Alluvial Piezometers in Sandia Canyon

March 16, 2017 – LANL Multiple Activities Work Plan for the Treatment and Land Application of Groundwater from Mortandad and Sandia Canyons, DP-1793 Work Plan #5  TA03 37975

March 14, 2016 – 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

March 4, 2016 – LANL Notice of Intent to Conduct Tracer Study at Los Alamos National Laboratory

March 2016 – LANL WCSF: Drilling Work Plan for Alluvial Piezometers in Sandia Canyon  General 30822

March 2016 – LANL IWD 2016 Drilling and Installation of Alluvial Piezometers in Sandia Canyon  General 38023

February 25, 2016 – LANL Submittal of the Periodic Monitoring Reports for Chromium Investigation, Mortandad-Sandia, Technical Area 21, and White Rock Monioring Groups

February 22, 2016 – LANL Discharge Permit DP-1793 Annual Monitoring Report for 2015

February 18, 2016 – LANL Submittal of the Completion Report for Combined Regional Aquifer Well R-67 and Chromium Corehole 6 37430

February 16, 2016 – EPA Technical Review comments of the Interim Measures Work Plan for Chromium Plume Control 37493

February 10, 2016 – NMED Approval Request for a Two-Year Extension to Install the Angled Boring for Sandia Wetland Borehole 1 (SWB-1)

February 3, 2016 – LANL Request for a Two-Year Extension to Install the Angled Boring for Sandia Wetland Borehole 1 (SWB-1)  TA03 37365

January 22, 2106 – NMED Approval with Modifications Drilling Work Plan for Chromium Plume Control Interim Measure and Plume-Center Characterization Injetion Wells CrIN-1 through CrIN-6 37439

2015

December 30, 2015 – NMED Approval Drilling Work Plan for Groundwater Extraction Well CrEX-3 37426

December 15, 2015 – LANL Submittal of the Drilling Work Plan for Alluvial Piezometers in Sandia Canyon  TA03 37345

December 15, 2015 – LANL Submittal of the Drilling Work Plan for Chromium Plume Control Interim Measure and Plume-Center Characterization Injection Wells CrIN-1 through CrIN-6 37343

November 24, 2015 – LANL Review Comments, Draft Discharge Permit DP-1835, Class V Underground Injection Control Wells

November 17, 2015 – LANL Floodplain Assessment of the Chromium Plume Control Interim Measure and Plume-Center Characterization in Mortandad Canyon 37404

November 12, 2015 – LANL Submittal of the Drilling Work Plan for Groundwater Extraction Well CrEX-3  37331 TA05

October 29, 2015 – NMED Discharge Permit DP-1793, Modification of Approval Conditions related to Workplan #2, DP-1793

October 27, 2015 – NMED Summary of October 21, 2015 Meeting

October 15, 2015 – NMED Approval with Modifications Work Plan for Chromium Plume Center Characterization

October 19, 2015 – San Ildefonso – NMED Approval with Modifications Interim Measures Work Plan for Chromium Plume Control

October 15, 2015 – NMED Approval with Modifications Interim Measures Work Plan for Chromium Plume Control

October 8, 2015 – LANL Request for Additional Information, Class V Underground Injection Control Wells, Discharge Permit DP-1835

October 8, 2015 – NMED Discharge Permit DP-1793, Approval of Workplan #2 for Treatment and Land Application of Groundwater

September 3, 2015 – LANL Multiple Activities Work Plan for the Treatment and Land Application of Groundwater from Mortandad and Sandia Canyons, DP-1793 WP#2

September 1, 2015 – NMED Approval Completion Report for Chromium Project Coreholes 1 through 5

July 28, 2015 – LANL Submittal of the Work Plan for Chromium Plume Center Characterization  TA05 37208

July 27, 2015 – NMED GWQB Discharge Permit, DP-1793, Los Alamos National Laboratory

May 26, 2015 – LANL Submittal of the Interim Measures Work Plan for Chromium Plume Control

February 19, 2015 – NMED Approval Drilling Work Plan for Groundwater Monitoring Well SIMR-2 (Formerly R-68) 36949 TA 03

February 2, 2015 – LANL Submittal Drilling Work Plan for Groundwater Monitoring Well SIMR-2 (Formerly R-68)  36891 TA 03

February 2, 2015 – LANL Submittal Drilling Work Plan for Regional Aquifer Well R-61r  36892 TA 03

January 29, 2015 – LANL Submittal of the completion Report for Groundwater Extraction Well CrEX-1  36890 TA 05

January 29, 2015 – 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)  36925 General

January 29, 2015 – 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)  36925 General

January 29, 2015 – LANL 600140 DOE (U.S. Department of Energy), May 19, 2014. “Well Pump Tests Phase II in Sandia and Mortandad Canyons,” U.S. Department of Energy Categorical Exclusion Determination Form, Los Alamos Site Office, Los Alamos, New Mexico. (DOE 2014, 600140)  36930 General

January 29, 2015 – LANL Field Implementation Plan for CrEX-1  36926 General

January 29, 2015 – LANL 600131 Yellow Jacket Drilling, June 27, 2014. “Integrated Work Document for Drilling and Installation of LANL Well [CrEX-1],” Gilbert, Arizona. (Yellow Jacket Drilling 2014, 600131)  36927 General

January 29, 2015 – 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)  36928 General

January 29, 2015 – LANL 600136 Moench, A.F., June 1997. “Flow to a Well of Finite Diameter in a Homogenous, Anisotropic Water Table Aquifer,” Water Resources Research, Vol. 33, No. 6, pp. 1397–1407. (Moench 1997, 600136)  36929 General

January 29, 2015 – LANL 600141 OSE (New Mexico Office of the State Engineer), July 21, 2014. “Application for Permit to Drill a Well with No Consumptive Use of Water,” OSE File No. RG 94875, Santa Fe, New Mexico. (OSE 2014, 600141)  36931 General

January 22, 2015 – LANL Submittal: Fact Sheet for Chromium Corehole 3  36886 TA 00

2014

December 10, 2014 – LANL Submittal of the Fact Sheets for Chromium Corehole 1  36837 TA 05

December 2, 2014 – NMED Evaluation of Regional Well R-61  36830 TA 03

November 25, 2014 – LANL Submittal of the Periodic Monitoring Reports for Chromium (2), Los Alamos/Pueblo, Material Disposal Area C, and Mortandad/Sandia Monitoring Groups 36756 TA 00

November 3, 2014 – LANL Submittal of the Fact Sheets for CrEX-1  36734 TA 03

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

September 23, 2014 – NMED Approval Drilling Work Plan for an Investigation Borehole Beneath the Sandia Canyon Wetland  36723 TA 03

September 5, 2014 – NMED Approval with Modifications Completion Report for Sandia Canyon Grade – Control Structure  36701 TA 03

September 5, 2014 – NMED Status Report for Pumping Test at Well R-42  36705 TA 05

July 30, 2014 – LANL Submittal of the Drilling WP for Chromium Project Coreholes  36564 TA 00

June 30, 2014 – LANL Sandia Wetland Performance Report, Baseline Conditions 2012 – 2014 36364 TA 03

June 20, 2014 – LANL Drilling WP for and Investigation Borehole Beneath the Sandia Canyon Wetland  36356 TA 03

May 27, 2014 – LANL Extension Request to Submit the Drilling WP for Well R-67 (chromium)  36323 TA 03

May 27, 2014 – LANL Extension Request to Submit the Drilling WP for Well R-68 (chromium) 36324 TA 03

May 20, 2014 – LANL Submittal: Periodic Monitoring Reports for TA 54, White Rock, (2) Chromium Investigations, And MDA C Monitoring Groups  36317 TA 03

April 7, 2014 – Extension Request to Submit the 1st Annual Sandia Canyon Wetland Performance Monitoring Report for 2013  36279 TA 03

March 19, 2014 – 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  36265 TA 49

March 31, 2014 – Submittal of Summary Report for the 2013 Chromium Groundwater Aquifer Tests at R-42, R-28 and SCI-2  36274 TA 05

March 18, 2014 – LANL Submittal Drilling WP for Extraction Well crEX-1  36262 TA 03

February 26, 2014 – LANL Submittal: Periodic Monitoring Report for Chromium Investigation, MDA C, Pajarito, and Los Alamos and Pueblo Monitoring Groups  36

January 31, 2014 – LANL Justification for not Drilling well SCI-4  36238 TA 03

2013

December 23, 2013 – LANL 251704 USACE (U.S. Army Corps of Engineers), March 27, 2013. “Action No. SPA-2012-00050-ABQ, McCann, LANL, Sandia Canyon, Wetland, Los Alamos County, NM,” USACE letter to J. McCann (LANL) from W. Oberle (USACE), Albuquerque, New Mexico. (USACE 2013, 251704)  36154 General

December 23, 2013 – LANL 251705 (Los Alamos National Laboratory), September 4, 2013. “Action No. SPA-2012-00050-ABQ Potential Removal and Placement of Sediments at Sandia Canyon Wetland,” 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)  36153 General

December 23, 2013 – LANL 251706 USACE (U.S. Army Corps of Engineers), September 5, 2013. “Potential Violation – Action No. SPA-2012- 00050-ABQ, McCann, LANL, Sandia Canyon, Wetland, Los Alamos County, NM,” USACE letter to G. Turner (DOE-NA-00-LA) and A.R. Grieggs (LANL) from W. Oberle (USACE), Albuquerque, New Mexico. (USACE 2013,  251706)  36155 General

December 23, 2013 – LANL Final Project Report, Land Application of Treated GW From Monitoring Wells R-28 & SCI-2, DP-1793  36106 TA 05

December 19, 2013 – LANL Completion Report for Sandia Canyon Wetland Grade Control Structure  36096 TA 03

November 19, 2013 – LANL Final Project Report, Land application of Treated GW from Monitoring Well R-42, DP-1793  36068 TA 05

November 19, 2013 – LANL Submittal of the Periodic Monitoring Reports for Chromium Investigation, Material Disposal Area C, Pajarito, and Los Alamos and Pueblo Monitoring Groups  36070 TA 00

October 8, 2013 – NMED Extension Request Denial to submit the WP for the Replacement of R-61  36765 TA 03

September 30, 2013 – Extension Request to Submit the WP for the Replacement of Regional Well R-61  36618 TA 03

September 27, 2013 – LANL Response to the Approval with Modification for the IM WP for the Evaluation of Chromium Mass Removal – Status Report for Pumping Test at Well R-42  36020 TA 05

September 27, 2013 – LANL Response to the Approval with Modification for the IM WP for the Evaluation of Chromium Mass Removal – Status Report for Pumping Test at Well R-42  36020 TA 05

September 23, 2013 – LANL Response to Review of the Periodic Monitoring Report for Mortandad and Sandia Watersheds General  36015 TA 03

September 23, 2013 – LANL Response to Review of the Periodic Monitoring Report for Mortandad and Sandia Watersheds General  36015 TA 03

September 4, 2013 – LANL Action No. SPA-2012-00050-ABQ Potential Removal and Placement of Sediments at Sandia Canyon Wetlands 35988 TA 05

August 29, 2013 – LANL Reference 243627 Stone, C.D., November 6, 2002. “Chromium (Cr),” 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)  35997 General

August 23, 2013 – NMED Recent Sampling Results for R-35a and Cr Results for PM-4  35975 TA 03

August 23, 2013 – LANL Submittal: Periodic Monitoring Reports for Chromium Investigation, MDA AB, TA 54, and TA 16-260 Monitoring Groups  35979 TA 16

August 16, 2013 – NMED Dilution Tracer Schedule for R-42 & R-28  35973 TA 05

July 29, 2013 – LANL Supplemental Information, Temporary Permission to Discharge Treated GW from a Pumping Test at Monitoring Well R-28, DP-1793  35961 TA 05

July 15, 2013 – LANL Revised Sampling WP for Mortandad Sandia 4th Quarter  35947 TA 03

July 11, 2013 – LANL Request for Variance to Exclude SCA-2, R-61S2, and R-43S2, from the Sampling Requirements of the 4th  36382 TA 03

June 26, 2013 – NMED Approval with Modifications Interim Measures Work Plan for the Evaluation of Chromium Mass Removal  35929 TA 03

June 23, 2013 – LANL Submittal of the Evaluation of Regional Well R-61  36358 TA 03

June 7, 2013 – LANL Extension Request for Submittal of the WP for the Replacement of Regional Well R-61  35907 TA 03

May 28, 2013 – LANL Evaluation to Determine the Cause of Reducing Conditions Observed in Regional Aquifer Monitoring Wells R-54 and R-61  35900 TA 03

May 28, 2013 – LANL Extension Request to Complete the WP for the Replacement of Regional Well R-61  35879 TA 03

May 28, 2013 – LANL Email: Followup to NMED Questions; Chromium, Mortandad Canyon IM WP  35890 TA 05

May 28, 2013 – LANL Periodic Monitoring Reports for chromium Investigation and MDA C Monitoring Groups  35881 TA 03

May 22, 2013 – LANL 30 Day Extension Request for DOE’s Review of the Chromium Travel Times in the Regional Aquifer, Mortandad Canyon, April 29, 2013  35894 TA 03

May 7, 2013 – NMED Summary Report for Redevelopment of Regional Well R-61  35838 TA 03

May 2, 2013 – NMED Temporary Permission to Discharge, Treated Well Development and Pump Test GW Discharge at Regional Monitoring Well R-42, DP-1793  35852 TA 05

May 2, 2013 – Temporary Permission to Discharge, Treated Well Development and Pump Test GW Discharge at Regional Monitoring Well R-28, DP-1793  35853 TA 05

April 30, 2013 – LANL Submittal of Interim Measures Work Plan for the Evaluation of Chromium Mass Removal   35819 TA 03

April 11, 2013 – LANL Evaluation to Determine the Cause of Reducing Conditions Observed in Regional Aquifer Wells R-54 and R-61  35807 TA 03

March 29, 2013 – NMED Proposed Revisions to R-61 Redevelopment Work Plan  35790 General

March 29, 2013 – LANL 238466 TerranearPMC, December 2012. “Field 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,” plan prepared for Los Alamos National Laboratory, Los Alamos, New Mexico. (TerranearPMC 2012, 238466)  35789 General

March 28, 2013 – LANL Submittal: Summary Report for Redevelopment of Regional Well R-61  35798 TA 03

March 26, 2013 – LANL Off Site Chromium Migration, Sandia and Mortandad Canyons  35782 TA 03

March 15, 2013 – NMED Response to NOI to Discharge: Discharge Permit not Required for Land Application of Rehabilitation Purge Water at Monitoring Well R-61  35763 TA 03

March 15, 2013 – Additional Information: Request for Temporary Permission to Discharge Treated GW from a Pumping Test at Well R-42, DP-1793  35766 TA 05

February 27, 2013 – LANL Request for Temporary Permission to Discharge Treated GW from a Pumping Test at Well R-28, DP-1793  35756 TA 05

February 19, 2013 – 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  35736 TA 03

January 25, 2013 – NMED Response Proposal to Submit Interim Measures Work Plan for Chromium Contamination in Groundwater    35714  TA 03

2012

December 21, 2012 – LANL Proposal to Submit IM WP for Chromium Contamination in GW  35637 TA 03

December 1, 2012 – LANL Status Report, Sandia /Mortandad Watershed January 1 – June 30, 2012  35647 TA 03

November 20, 2012 – NMED NOI to Discharge Redevelopment Water from Regional Aquifer Monitoring Well R-61  35764 TA 03

November 29, 2012 – 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  35601 TA 16

September 28, 2012 – 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.“Chromium Isotope Fractionation during Reduction of Cr(VI) under Saturated Flow Conditions,” Environmental Science & Technology, Vol. 46, No. 12, pp. 6783–6789. (Jamieson-Hanes et al. 2012, 226765)  35499 General

September 28, 2012 – LANL Reference 226764 Berna, E.C., T.M. Johnson, R.S. Makdisi, and A. Basu, February 2010. “Cr Stable Isotopes as Indicators of Cr(Vi) Reduction in Groundwater: A Detailed Time-Series Study of a Point-Source Plume,” Environmental  Science & Technology, Vol. 44, No. 3, pp. 1043–1048. (Berna et al. 2010, 226764)  35498 General

September 28, 2012 – LANL Reference 226766 Raddatz, A.L., T.M. Johnson, and T.L. McLing, January 2011. “Cr Stable Isotopes in Snake River Plain Aquifer Groundwater: Evidence for Natural Reduction of Dissolved Cr(Vi),” Environmental Science &  Technology, Vol. 45, No. 2, pp. 502–507. (Raddatz et al. 2011, 226766)  35500 General

September 28, 2012 – LANL Phase 2 IR for Sandia Canyon  35521 TA 03

September 24, 2012 – NMED Approval Request for Extension for Completion of R-61 Redevelopment and Submittal of the Summary Report  35481 TA 03

September 17, 2012 – NMED Approval with Modification Completion Report for Regional Aquifer Well R-62  35486 TA 05

September 13, 2012 – Extension Request for Completion of R-61 Redevelopment and Submittal of the Summary Report  35474 TA 03

August 30, 2012 – Submittal: Periodic Monitoring Reports for Chromium Investigation, Los Alamos/Pueblo Watershed General Surveillance, and MDA AB Monitoring Groups  35465  TA 00

August 27, 2012 – LANL Submittal: Replacement Appendix B of the R-62 Well Completion Report  35458 TA 05

August 24, 2012 – 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  35460 TA 05

August 10, 2012 – LANL Clarification of June 18, 2012, Proposal to Perform IM Alternatives Analysis for chromium in Sandia and Mortandad Canyons 35391 TA 03

July 10, 2012 – NMED Approval Work Plan for Redevelopment of Monitoring Well R-61  35342 TA 03

July 5, 2012 – NMED Email: Reducing Agent as a Remedy for Vadose Zone Chromium VI  35332 TA 03

June 26, 2012 – LANL Submittal: WP for Redevelopment of Monitoring Well R-61  35316 TA 03

June 18, 2012 – LANL Proposal to Perform IM Alternative Analysis for chromium in Sandia and Mortandad Canyons 35298 TA 03

June 5, 2012 – NMED Approval Request for Extension for the Construction of the Sandia Wetland Grade-Control Structure  35276 TA 03

May 23, 2012 – LANL Extension Request for the Construction of the Sandia Canyon Wetland Grade Control Structure  35251 TA 03

May 21, 2012 – 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  35256 TA 16

May 9, 2012 – NMED Approval Request for Extension for the Sandia Canyon Phase II Investigation Report  35237 TA 03

May 1, 2012 – LANL 210306 Crook, N., B. Cubbage, G. Noonan, and M. McNeill, October 17, 2011. “Final Report, Geophysical Survey of the Wetland Area of Upper Sandia Canyon,” report prepared for TerranearPMC by hydroGEOPHYSICS, Tucson, Arizona. (Crook et al. 2011, 210306) 35212 General

May 1, 2012 – LANL 203414, May 6, 2011. “Waste Characterization Strategy Form for R-62 Installation of Regional Aquifer Well,” Los Alamos National Laboratory, Los Alamos, New Mexico. (LANL 2011, 203414)  35218 General

April 27, 2012 – LANL Extension Request for the Sandia Canyon Phase 2 IR  35199 TA 03

April 19, 2012 – LANL Submittal: Completion Report for Regional Aquifer Well R-62  35180 TA 05

April 2, 2012 – NMED Approval; Request to Defer Armoring of the Stilling Basin in Upper Sandia Canyon  35157 TA 03

March 29, 2012 – NMED 2nd Extension Request Approval to Submit the R-62 Well Completion Report  35156 TA 05

March 29, 2012 – LANL Final Project Report, Land Application of Treated GW from Monitoring Well R-28, Discharge Permit DP-1793  35153 TA 05

March 26, 2012 – LANL 2nd Extension Request to Submit the R-62 Well Completion Report  35132 TA 05

February 29, 2012 – LANL Periodic Monitoring Reports for Mortandad and Sandia, Pajarito, White Rock Canyon, Water Canyon/Canon de Valle, and Ancho Watersheds  35089 TA 03

February 23, 2012 – LANL Request to Defer Armoring of the Stilling Basin in Upper Sandia Canyon  35081 TA 03

February 21, 2012 – NMED Approval Request for Extension to Submit the Well Completion Report for R-62  35116 TA 05

February 15, 2012 – LANL Extension Request to Submit the Well Completion Report for R-62  35078 TA 05

January 30, 2012 – NMED Email: HACH Meter +6Cr for R-62  35064 TA 05

January 13, 2012 – NMED Temporary Permission to Discharge, Treated Well Development and Pump Test GW Discharge at Regional Monitoring Well R-28, DP-1793  35038 TA 05

2011

December 21, 2011 – NMED Email: GW Data for the Chromium Investigation Monitoring Group – 1st Quarter Sampling 2011  35002 General

December 20, 2011 – LANL Discharge Permit Application for the Land Application of Treated GW from a Pumping Test at Well R-28  35028 TA 05

December 15, 2011 – NMED Approval Extension Request to Submit the Phase II Investigation Report for Sandia Canyon  34996 TA 03 

December 1, 2011 – LANL Response to Request for Information Regarding Regional Well R-61 Stormwater Pond  34967 TA 03

December 2, 2011 – LANL Extension Request to Submit the Phase 2 IR for Sandia Canyon  34954 TA 03

November 23, 2011 – LANL Periodic Monitoring Reports for Pajarito, Mortandad and Sandia, and Water Canyon/Canon de Valle Watersheds  34941 TA 03

November 21, 2011 – NMED Approval Extension Request to Submit the Work Plan for Well SCI-4  34936 TA 05

November 17, 2011 – NMED GW R-61 Drilling Mud Pit Samples, Mortandad Canyon  35029 TA 03

November 15, 2011 – NMED Approval with Modification Work Plan and Final Design for Stabilization of the Sandia Canyon Wetland  34919 TA 03

November 10, 2011 – LANL Extension Request to Submit the WP for Well SCI-4  34917 TA 05

November 9, 2011 – 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 34905 TA 03

November 9, 2011 – NMED NOI Response; Discharge Permit Required for Treated Well Development and Pump Test GW Discharge at Regional Monitoring Well R-28  34903 TA 05

November 3, 2011 – LANL Submittal: Fact Sheets for Regional Well R-62  34891 TA 05

September 30, 2011 – LANL 201256 TerranearPMC, March 2011. “Drilling Plan for Regional Aquifer Well R-61,” plan prepared for Los Alamos National Laboratory, Los Alamos, New Mexico. (TerranearPMC 2011, 201256)  34805 General

September 30, 2011 – LANL 204885 (Los Alamos National Laboratory), March 8, 2011. “Waste Characterization Strategy Form for Installation of Regional Aquifer Well R-61,” EP2011-0083, Los Alamos National Laboratory, Los Alamos, New Mexico. (LANL 2011, 204885)  34808 General

September 29, 2011 – WP and final Design for Stabilization of the Sandia Canyon Wetland  34787 TA 03

September 27, 2011 – LANL Submittal: Completion Report for Regional Aquifer Well R-61 34777 TA 03

September 22, 2011 – NMED Approval Extension Request Completion of Regional Groundwater Monitoring Well R-62   34768 TA 05

September 14, 2011 – NMED Approval with Modification Extension Request for Submittal of the Work Plan for Perched-Intermediate Well SCI-4  34757 TA 03

September 12, 2011 – NMED Email: Revision to Annular Fill: Well R-62 Schematic and Plan   34750 TA 05

September 2, 2011 – LANL Extension Request for Submittal of the WP for Perched Intermediate Well SCI-4  34724 TA 03

September 1, 2011 – NMED Email: R-62 Well Design  34723 TA 05

August 31, 2011 – LANL Email: R-62 Well Design Final  34722 TA 05

August 24, 2011 – LANL NOI to Discharge Treated GW from R-28 Development and Pumping Test  34713 TA 05

August 23, 2011 – LANL Periodic Monitoring Reports for Mortandad and Sandia, Pajarito, Los Alamos, Water Canyon/Canon de Valle, and Ancho Watersheds  34699 TA 00

August 4, 2011 – 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  34657 TA 03

July 29, 2011 – NMED Approval with Modifications Completion Report for Reqional Aquifer Well R-50  34645 TA 03

June 14, 2011 – NMED Approval Extension Request for Completion of R-62 and SCI-3   34580 TA 05

June 9, 2011 – NMED Approval with Modification Interim Measures Work Plan for Stabilization of hte Sandia Canyon Wetland  34571 TA 03

June 9, 2011 – LANL Request for Extension for Completion of R-62 & SCI-3  34572 TA 05

May 25, 2011 – Fact Sheet for R-61  34529 TA 05

May 16, 2011 – LANL IM WP for Stabilization of the Sandia Canyon Wetland  34512 TA 03

May 6, 2011 – LANL Periodic Monitoring Reports for Mortandad, Sandia & Pajarito Watersheds  34502 TA 03

May 2, 2011 – NMED Notice of Agreement Force Majeure R-61 Well Completion  35187 TA 03

April 28, 2011 – LANL Update on April 25, 2011, Oral Notification of Delays at Well R-61 and Written Notice of Force Majeure  34487 TA 03

April 6, 2011 – NMED Email: R-61 Proposed Well Design  34458 TA 03

March 30, 2011 – NMED Approval with Modifications Extension Request Completion of Well R-61  34446 TA 03   

March 28, 2011 – NMED Status of Perched-Intermediate Well SCI-4  35185 TA 03

March 17, 2011 – LANL Extension Request for Completion of Well R-61  34409 TA 03

March 17, 2011 – LANL Status of Perched Intermediate Well SCI-4  34407 TA 03

March 9, 2011 – NMED Approval with Modification Drilling Work Plan for Perched-Intermediate Well SCI-3

February 14, 2011 – LANL Periodic Monitoring Reports for Mortandad and Sandia, Pajarito, Los Alamos, Water Canyon/Canon de Valle, Ancho, And White Rock  34337 TA 00

February 7, 2011 – NMED Approval Request for Extension for the Submittal of Work Plan to Stabilize the Eastern End of Sandia Canyon Wetland

January 28, 2011 – 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  34280 TA 03

January 14, 2011 – NMED Review Periodic Monitoring Report for Mortandad and Sandia Watersheds, May 3 – May 19, 2010  34237 TA 00

January 4, 2011 – NMED Approval with Modification Phase II Investigation Work Plan for Sandia Canyon   34230 TA 03

2010

December 8, 2010 – NMED Approval with Modification Drilling WP for Regional Aquifer Well R-62  34183 TA 05

November 29, 2010 – LANL Periodic Monitoring Reports for Mortandad and Sandia and Pajarito Watersheds  34136 TA 03

November 18, 2010 – LANL Response to the Review of Periodic Monitoring Reports for Mortandad and Sandia Watersheds, August 3 – 19, 2009, and November 2 – 20, 2009  34113 TA 00

November 4, 2010 – NMED Approval with Modification Drilling WP for Regional Aquifer well R-61  34135 TA 03

October 29, 2010 – LANL WP for R-62  34064 TA 05

October 15, 2010 – LANL Response to the Review of Periodic Monitoring Reports for Mortandad and Sandia Watersheds, August 3 – 19, 2009, and November 2 – 20, 2009  34042 TA 00

October 15, 2010 – Submittal: WP for Well R-61  34040 TA 03

October 14, 2010 – NMED Review of Periodic Monitoring Report for Mortandad and Sandia Watersheds, January 25 – February 12, 2010  35446 TA 03

September 10, 2010 – NMED Review of Periodic Monitoring Report for Mortandad and Sandia Watersheds, August 3 – August 19, 2009, and November 2 – November 29, 2009   33946 TA 00

August 19, 2010 – Periodic Monitoring Reports for Mortandad and Sandia, Pajarito, Ancho Water & White Rock Canyons  33877 TA 03 

July 30, 2010 – LANL 108564 TerranearPMC, October 2009. “Drilling Plan for Regional Aquifer Well R-50,” plan prepared for LANL  33850 General

July 30, 2010 – 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)  33847  General

July 30, 2010 – LANL Phase 2 IWP for Sandia Canyon  33836 TA 03

July 13, 2010 – LANL Completion Report for Regional Aquifer Well R-50  33796 TA 03

July 2, 2010 – NMED Spill Response Assessment and Closure of Release ID# 2010-263 Occurring at Monitoring Well R-50  33788 TA 03

June 24, 2010 – LANL Fax; 15 Day Sampling Notification for Lower Sandia Canyon Aggregate Area Investigation  33734 TA 53

June 1, 2010 – LANL IR for Upper Sandia Canyon Aggregate Area  33626 TA 03

May 25, 2010 – LANL Periodic Monitoring Reports for Mortandad and Sandia, Pajarito, and Los Alamos Watersheds  33615 TA 00

May 14, 2010 – NMED Spill Response Assessment and Closure of Release ID#2010-252 Occurring at Monitoring Well SCI-2, Discovered on March 15, 2010  33599 TA 53

May 13, 2010 – NMED Approval Request for Extension for the Submittal of the Phase II Investigation Work Plan for Sandia Canyon  33591 TA 03

May 3, 2010 – LANL Extension Request for Phase 2 IWP for Sandia Canyon  33503 TA 03

March 15, 2010 – LANL Well Completion Summary Fact Sheet for R-50  33263 TA 03

February 26, 2010 – LANL Periodic Monitoring Reports for Mortandad and Sandia, Ancho, Water Canyon/Canon de Valle, Pajarito and White Rock Canyons  33169 TA 03

February 9, 2010 – NMED Approval with Modification Investigation Report for Sandia Canyon  33065 TA 03

January 5, 2010 – NMED Email: R-50 Abandoned Hole Backfill Proposal  32338 TA 03

2010

December 22, 2009 – NMED Approval Completion Report for Reqional Aquifer Well R-41

December 22, 2009 – NMED Approval Request Extension of Time for the Completion of Well R-50 32336 TA 03

December 15, 2009 – LANL Extension Request for the Completion of Well R-50  32302 TA 03

November 30, 2009 – LANL Periodic Monitoring Reports for Mortandad and Sandia, Los Alamos, & Pajarito Watersheds  32254 TA 00

November 24, 2009 – NMED Approval Completion Report for Regional Aquifer Well R-45

October 30, 2009 – LANL Reference 107033 Peterson, M.L., G.E.J. Brown, G.A. Parks, and C.L. Stein, 1997. “Differential Redox and Sorption of Cr(III/VI) on Natural Silicate and Oxide Minerals: EXAFS and XANES Results,” Geochimica et Cosmochimica Acta, Vol. 61, No. 16, pp. 3399–3412. (Peterson et al. 1997, 107033)  32178 General

October 29, 2009 – NMED Approval with Modification Drilling Work Plan for Regional Aquifer Well R-50  32124 TA 03

October 29, 2009 – NMED Approval with Modification of Completion Report for Reqional Aquifer Well R-44

October 16, 2009 – LANL Drilling WP for Regional Aquifer R-50  32102 TA 03

October 15, 2009 – LANL IR for Sandia Canyon  32101 TA 03

October 2, 2009 – LANL Fax: 15 Day Sampling Notification for the Upper Sandia Canyon Aggregate Area  32081 TA 03

August 31, 2009 – LANL Periodic Monitoring Reports for Mortandad and Sandia, Pajarito, Water, Ancho & White Rock Canyons  31935 TA 03

August 31, 2009 – NMED Modification of Approval of Drilling WP for Los Alamos & Pueblo Canyons GW Monitoring Well Installations; Direction to Install Chromium Investigation Well R-50  31939 TA 00

September 26, 2008 – LANL Submittal: Well Completion Summary Fact Sheets for SCI-2 (within R-43)  30125 TA 03

August 6, 2009 – NMED Notice of Approval for the NOD Response for the IWP for Lower Sandia Canyon Aggregate Area and Revision 1  31875 TA 53

July 28, 2009 – NMED Approval of Request for Extension to Submit the Sandia Canyon Investigation Report  31850 TA 03

July 20, 2009 – LANL Submittal: NOD Response for the IWP for Lower Sandia Canyon Aggregate Area and Revision 1  31842 TA 53

July 17, 2009 – LANL Extension Request for the Submittal of the Sandia Canyon IR  31832 TA 03

June 23, 2009 – NMED NOD: IWP for Lower Sandia Canyon Aggregate Area  31706 TA 53

May 29, 2009 – LANL Periodic Monitoring Reports for Ancho, Mortandad, Sandia, Pajarito & Los Alamos Canyons  31660 TA 00

April 30, 2009 – LANL IWP & Historical IR for Lower Sandia Canyon Aggregate Area  31518 TA 53

March 18, 2009 – NMED Review of Periodic Monitoring Report for Sandia Watershed, February 6 – February 26, 2008  30940 TA 03

March 16, 2009 – LANL Completion Report for Wells R-43 & SCI-2 30644 TA 03

February 27, 2009 – LANL Periodic Monitoring Reports for Mortandad, Sandia, Los Alamos, Pajarito, White Rock, & Water Canyons  30061 TA 00

January 30, 2009 – 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)  31267 General

January 30, 2009 – LANL 103940 TerranearPMC, June 2008. “Drilling Plan for Regional Aquifer Well R-42,” plan prepared for Los Alamos National Laboratory, Los Alamos, New Mexico. (TerranearPMC 2008, 103940) 31269 General

January 24, 2009 – LANL Completion Report for Regional Aquifer Well R-42  30155 TA 05

2008

December 19, 2008 – NMED Approval: NOD Response of Periodic Monitoring Report for Sandia Watershed, November 7 – November 19, 2007  30135 TA 03

December 8, 2008 – NMED Approval of Request for Extension to Submit the Sandia Canyon Investigation Report  30133 TA 03

November 26, 2008 – LANL Periodic Monitoring Report for Mortandad, Sandia, Pajarito & Ancho Canyons  30132 TA 03

November 26, 2008 – LANL Extension Request for Sandia Canyon IR  30131 TA 03

November 24, 2008 – LANL NOD Response of Periodic Monitoring Report for Sandia Watershed, November 7 – November 19, 2007  30130 TA 03

October 29, 2008 – NMED NOD: Periodic Monitoring Report for Sandia Watershed, November 7 – 19, 2007  30128 TA 03

September 30, 2008 – 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)   31195 General

September 26, 2008 – LANL Periodic Monitoring Reports for Mortandad, Sandia, Pajarito, Water & White Rock Canyons 30124 TA 03

September 26, 2008 – LANL Well Completion Summary Fact Sheets for SCI-2 (within R-43)  30125 TA 03

September 26, 2008 – LANL Well Completion Summary Fact Sheets for R-42  30151 TA 05

September 24, 2008 – LANL Email: Request to Omit Bentonite Grout from R-43 Annular Fill Material  31425 TA 03

August 12, 2008 – NMED Approval with Direction Upper Sandia Canyon Aggregate Area IWP  30120 TA 03

July 31, 2008 – LANL Periodic Monitoring Reports for Mortandad, Sandia, Pajarito & Los Alamos Canyons  30038 TA 00

July 31, 2008 – LANL Submittal: Fate and Transport Investigations Update for Chromium Contamination in Sandia Canyon 30119 TA 03

July 31, 2008 – LANL Reference 102411 Sikora, E. R., T. M. Johnson, and T. D. Bullen, 2008. “Microbial Mass-Dependent Fractionation of Chromium Isotopes,” Geochimica et Cosmochimica Acta, Vol. 72, pp. 3631-3641. (Sikora et al. 2008, 102411) 31126 General

July 31, 2008 – LANL Reference 102412 Izbicki, J. A., J. W. Ball, T. D. Bullen, and S. J. Sutley, 2008. “Chromium, Chromium Isotopes and Selected Trace Elements, Western Mojave Desert, USA,” Applied Geochemistry, Vol. 23, pp. 1325-1352. (Izbicki et al. 2008, 102412) 31127 General

July 31, 2008 – LANL Reference 102413 Schoenberg, R., S. Zink, M. Staubwasser, and F. von Blanckenburg, 2008. “The Stable Cr Isotope Inventory of Solid Earth Reservoirs Determined by Double Spike MC-ICP-MS,” Chemical Geology, Vol. 249, pp. 294-306. (Schoenberg et al. 2008, 102413)  31128 General

July 31, 2008 – 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)  31129 General

July 31, 2008 – 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)  31130 General

July 31, 2008 – 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)  31131 General

July 31, 2008 – LANL Reference 102462 Gouze, P., T. Le Borgne, R. Leprovost, G. Lods, T. Poidras, and P. Pezard, 2008. “Non-Fickian Dispersion in Porous Media: 1. Multicale Measurements Using Single-Well Injection Withdrawal Tracer Tests,” Water Resources Research, Vol. 44, W06426, 15 pp. (Gouze et al. 2008, 102462)  31132 General

July 31, 2008 – LANL Reference 102463 Le Borgne, T., and P. Gouze, 2008. “Non-Fickian Dispersion in Porous Media: 2. Model Validation from Measurements at Different Scales,” Water Resources Research, Vol. 44, W06427, 10 pp. (Le Borgne and Gouze 2008, 102463)  31133 General

July 31, 2008 – LANL Reference 102464 Johnson, T. M., and E. Berna, 2008. “Cr Isotopes Reveal Progress of Natural Reduction of Contaminant Cr(VI) in a Groundwater System,” Goldschmidt Conference Abstracts, p. A437. (Johnson and Berna 2008, 102464)  31134 General

July 31, 2008 – LANL Reference 102465 Gelhar, L.W., C. Welty, and K.R. Rehfeldt, July 1992. “A Critical Review of Data on Field-Scale Dispersion in Aquifers,” Water Resources Research, Vol. 28, No. 7, pp. 1955-1974. (Gelhar et al. 1992, 102465)  31135 General

July 31, 2008 – LANL Reference 102466 Miller, T. A., V. V. Vesselinov, P. H. Stauffer, K. H. Birdsell, and C. W. Gable, 2007. “Integration of Geologic Frameworks in Meshing and Setup of Computational Hydrogeologic Models, Pajarito Plateau, New Mexico,” New Mexico Geological Society Guidebook: 58th Field Conference, Geology of the Jemez Mountains  Region II, pp. 121–128. (Miller et al. 2007, 102466)  31136 General

July 31, 2008 – LANL Reference 102495 Chao, T. T., 1972. “Selective Dissolution of Manganese Oxides from Soils and Sediments with Acidified Hydroxylamine Hydrochloride,” Soil Science Society of America Proceedings, Vol. 36, pp. 764-768. (Chao 1972, 102495)  31137 General

July 25, 2008 – LANL NOD Response for the IWP for Upper Sandia Canyon Aggregate Area and Revision 1  30118 TA 03

June 25, 2008 – NMED NOD: IWP for Upper Sandia Canyon Aggregate Area  30117 TA 03

May 8, 2008 – LANL Approval with Modification; Drilling WP for Nature and Extent of chromium Contamination in GW Investigations 30531 TA 54

April 30, 2008  – LANL Submittal: Drilling WP for Nature and Extent of Chromium Contamination in GW Investigations 30116 TA 03

March 31, 2008 – LANL IWP and the Historical IR for Upper Sandia Canyon Aggregate Area  30114 TA 03

March 18, 2008 – NMED Investigation of chromium Contamination in Regional GW 30146 TA 05

February 29, 2008 – LANL Periodic Monitoring Reports for Sandia, Mortandad, Los Alamos, White Rock & Pajarito Watersheds  30018 TA 00

2007

December 17, 2007 – NMED Approval with Direction WP for Geochemical Characterization and Drilling for Fate and Transport of contaminates Originating in Sandia Canyon  30923 General

November 19, 2007 – LANL WP for Geochemical Characterization and Drilling for Fate and Transport of contaminants Originating in Sandia Canyon  30096 TA 03

October 29, 2007 – NMED Notice of Approval Mortandad Canyon Groundwater Monitoring Well Network Evaluation, Revision 1

October 22, 2007 – LANL Periodic Monitoring Report for Sandia Watershed, February 13 – 25, 2007 & June 4 – 24, 2007  30091 TA 03

October 17, 2007 – NMED NOD; Fate and Transport Modeling Report for Chromium Contamination from Sandia Canyon  30090 TA 03

September 19, 2007 – LANL 098200 Bennett, K., D. Keller, and R. Robinson, 2001. “Sandia Wetland Evaluation,” Los Alamos National Laboratory document LA-UR-01-66, Los Alamos, New Mexico. (Bennett et al. 2001, 098200)  30810 General

September 14, 2007 – LANL Submittal: Fate & Transport Modeling Report for chromium Contamination from Sandia Canyon  30004 TA 00

September 14, 2007 – LANL Reference 098074 Bain, D. J., and T .D. Bullen, 2004. “Experimental Determination of Isotopic Fractionation of Chromium(III) During Oxidation by Manganese Oxides,” Eos Transactions, American Geophysical Union, Vol. 85, No. 47, Fall Meeting Supplement, Abstract H42C-03. (Bain and Bullen 2004, 098074)  30783 General

September 14, 2007 – LANL Reference 098081 Ellis, A. S., T. M. Johnson, and T. D. Bullen, March 15, 2002. “Chromium Isotopes and the Fate of Hexavalent Chromium in the Environment,” Science, Vol. 295, pp. 2060-2062. (Ellis et al. 2002, 098081)  30785 General

September 14, 2007 – LANL Reference 098086 Ellis, A. S., T. M. Johnson, and T. D. Bullen, 2004. “Using Chromium Stable Isotope Ratios to Quantify Cr(VI) Reduction: Lack of Sorption Effects,” Environmental Science & Technology, Vol. 38, No. 13, pp. 3604- 3607. (Ellis et al. 2004, 098086) 30786 General

September 14, 2007 – LANL Reference 098088 Kitchen, J. W., T. M. Johnson, and T. D. Bullen, 2004. “Chromium Stable Isotope Fractionation During Abiotic Reduction of Hexavalent Chromium,” Eos Transactions, American Geophysical Union, Vol. 85, No. 47, Fall Meeting Supplement, Abstract V51A-0519 (Kitchen et al. 2004, 098088)  30788 General

September 14, 2007 – LANL Reference 098101 Sikora, E. R., T. M. Johnson, and T. D. Bullen, 2004. “Chromium Stable Isotope Fractionation During Bacterial Reduction of Hexavalent Chromium,” Eos Transactions, American Geophysical Union, Vol. 85, No. 17, Joint Assembly Supplement, Abstract H43E-05. (Sikora et al. 2004, 098101) 30789 General

August 31, 2007 – LANL Reference 097256 EPA (U. S. Environmental Protection Agency), October 2000. “In Situ Treatment of Soil and Groundwater Contaminated with Chromium,” Technical Resource Guide, EPA/625/R-00/005, Office of Research and Development, Washington, D. C. (EPA 2000, 097256)  30747 General

August 6, 2007 – NMED Approval with Direction Mortandad Canyon Groundwater Monitoring Network Evaluation

June 15, 2007 – NMED Press Release; Environment Dept. Reaches $251,870 Settlement with LANL on Failure to Report Chromium Contamination in GW  14776 TA 05

June 14, 2007 – NMED Settlement Agreement – Notice of Violation dated October 25, 2006

April 6, 2007 – LANL Reference 95189, Oral communication Record between Dr. tom Johnson and Jeff Heikoop Regarding Chromium Isotopes  14655 General

March 5, 2007 – NMED Approval with Direction for the Addendum to the Work Plan for Sandia Canyon and Canada del Buey  2864 TA 05

February 20, 2007 – LANL 094042 Kleinfelder, February 9, 2005. “Revision 1, Well R-28 Completion Report,” report prepared for Los Alamos National Laboratory, Project No. 37151/16.12, Albuquerque, New Mexico. (Kleinfelder 2005, 094042) 14597 General

2006

December 27, 2006 – NMED Notice of Approval for the Interim Measures Investigation Report for Chromium Contamination in Groundwater  2862 TA 05

November 30, 2006 – LANL Submittal: Interim Measures IR for Chromium Contamination in GW 2861 TA 05

November 30, 2006 – LANL Reference 91684 Raj, D., and J. M. Zachara, May 1986.” Geochemical Behavior of Chromium Species,” Electric Power Research Institute. (Rai and Zachara 1986, 91684) 14466 General

November 1, 2006 – LANL Email: Proposed Fix for Cr IM Well SCI-1/SCC-1 (2) 5833 TA 03

November 1, 2006 – LANL Email: Proposed Fix for Cr IM Well SCI-1/SCC-1  5832 TA 03

September 23, 2006 – Fax: Notice of Violation; Chromium contamination at R-28  2860 TA 05

September 18, 2006 – LANL Email: Chromium Field Campaign Update – 9/15  2859 TA 05

September 9, 2006 – NMED Notice of Violation  2858 TA 05

September 9, 2006 – NMED Press Release: Environment Dept. Proposes $795,000 Penalty for Chromium Contamination 2857 TA 05

August 28, 2006 – LANL Response to the Approval with Modifications Letter, Dated May 8, 2006, for the Interim Measures WP for Chromium Contamination in GW 2856 TA 05

July 19, 2006 – LANL Email: 15-Day Notification of Field Activities – Drilling in Sandia for Cr IM WP  5824 TA 03

July 21, 2006 – 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 14188 General

June 28, 2006 – 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 14168 General

June 14, 2006 – LANL Email: Response to Request Regarding the Total Cr vs. Hexavalent Cr Sampling, IM WP 2852 TA 05

May 19, 2006 – LANL Response to HWB’s Information Request for analytical Reports and Correspondence Pertaining to Regional Aquifer Well R-28  2850 TA 05

May 12, 2006 – NMED Press Release: Environment Dept. Approves LANL WP to Investigate Chromium Contaminated GW  2849 TA 05

May 5, 2006 – Approval with Modifications for the IM WP for Chromium Contamination in GW 2848 TA 05

May 2, 2006 – NMED Request for Analytical Lab Reports and All Correspondence submitted to NMED Pertaining to Regional Aquifer Well R-28  2847 TA 05

March 31, 2006 – Submittal of Interim Measures WP for Chromium Contamination in Groundwater  2846 TA 05

2005

December 29, 2005 – NMED Interim Measures WP Requirement GW Contaminants Detected in the Regional Aquifer at R-28  2845 TA 05

2004

December 23, 2004 – 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)  7707 TA 00

May 3, 2004 – LANL Completion Report for Characterization Well R-28  2844 TA 05

April 23, 2004 – LANL Management of Drill Cuttings from Wells R-1, R-28, CdV-16-1, CdV-16-2 and CdV-16-3  2843 TA 05

March 2, 2004 – LANL Fact Sheet for R-28  2841 TA 05

2003

November 13, 2003 – LANL SAP for Drilling and Testing Characterization Wells R-1, R-28, R-33 & R-34  3278 TA 01

 

 

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