What's New?

 

Recent Remedial Activities

March 2016

  • Conducted unscheduled site walk of the OU2 Landfill cover for inspection after grass fire on a portion of the cover in late February

January 2016

  • Completed the scheduled semiannual surface inspection at OU2.

December 2015

  • Completed field abandonment of surplus monitoring wells in OU5.
  • LAC submitted a request for Close out Letter for First Amendment to Consent Agreement No.01-08-07-02, Subparagraphs 18a-18i, dated December14, 2015.

August 2015

  •  Initiated the abandonment of 73 surplus monitoring wells in OU5.

July 2015

  • Completed the scheduled semiannual surface inspection and the annual surface water sampling, groundwater sampling, and soil gas monitoring event at OU2.
  • Completed the scheduled annual groundwater monitoring event at OU5.
  • Completed the Addendum to the Phase2 CAP for Groundwater Cleanup at Lowry and submitted to the Agencies.

June 2015

  • Submitted Draft Final Addendum - Phase 2 Corrective Action Plan for Groundwater Clean up at Lowry (Operable Unit 5), submitted via electronic mail June 23, 2015.
  • Conducted unscheduled site walk of the OU2 Landfill cover for inspection after heavy rainfall in May and June 2015.

May 2015

  • Submitted Draft Addendum to the Phase2 Corrective Action Plan for Groundwater Cleanup at Lowry (Operable Unit 5), submitted May 13, 2015.

January 2015

  •  Completed the scheduled semiannual surface inspection at OU2.

October 2014

  • Completed the scheduled quarterly surface inspections and soil vapor monitoring at OU2.
  • Prepared a letter addendum to Phase 2 CAP for the Operable Unit 2 Landfill Closure to document changes to the monitoring frequency approved by CDPHE.

August 2014

  • Completed the scheduled semiannual surface water and groundwater sampling event at OU2.

July 2014

  • Completed the scheduled quarterly surface inspections and soil vapor monitoring at OU2.
  • Completed the field activities for the July 2014 annual groundwater monitoring event at OU5. 
  • Site-specific standards for TCE and 1,4-dioxane in groundwater at Lowry were promulgated in Regulation 42 by the Colorado Water Quality Control Commission (WQCC).

 

Recently Approved Documents

March 2016

  • Post-Closure Operation and Maintenance Report, November 2014 through October 2015, Operable Unit 2 (OU2) Landfill Site, dated March 30, 2016.
  • Monitoring Well Abandonment Activities Summary, Operable Unit 5 – Main TCE Plume, Headquarters TCE Plume, Fire Training Zone TCE Plume, and the Carbon Tetrachloride Source Area, dated March 30, 2016

October 2015

  • Results for the Annual Operable Unit 5 Groundwater Monitoring Program - July/August 2015, MainTCE Plume, Headquarters TCE Plume, FireTraining ZoneTCE Plume, and the Carbon TetrachlorideSourceArea,dated October 21, 2015
  • Groundwater, Surface Water, and SoilVapor MonitoringReport, Post-Closure Monitoring – 2015 Annual, Operable Unit 2 (OU2) Landfill Site,dated October 21, 2015.

July 2015

  •  Addendum - Phase 2 Corrective Action Plan for Groundwater Cleanup at Lowry (Operable Unit 5), dated July 15, 2015.

March 2015 

  • Results for the Annual Operable Unit 5 Groundwater Monitoring Program - July/August 2014, Main TCE Plume, Headquarters Area TCE Plume, Fire Training Zone TCE Plume, and the Carbon Tetrachloride Source Area, March 24, 2015.
  • Post-Closure Operation and Maintenance Report-November 2013 through October 2014, Operable Unit 2 (OU2) Landfill Site, March 24, 2015.
  • Completion Report - Removal of Fly Ash and Asbestos Contaminated Soil, Xenia Street Extension, IRG Redevelopment I Property (adjacent to the new Denver Fire Station), March 24, 2015.
  • Closure Request - Hydrocarbon Impacted Soil, Hangar No. 2 Property, March 24, 2015.
  • Completion Report - Removal of Hydrocarbon Contaminated Soil Discovery #1, Wetlands Park Construction - Kelly Road Dam, March 24, 2015.
  • Closure Request - Petroleum-Impacted Soil at an Orphaned Underground Storage Tank Location, Primrose School Property, March 24, 2015.

January 2015

  • Letter Work Plan for Additional Characterizxation of Petroleum-Impacted Soil at an Orphaned Underground Storage Tank Location, Primrose  School Property, January 23, 2015.

December 2014

  • Groundwater, Surface Water, and Soil Vapor Monitoring Report, Post-closure Monitoring - Second and Third Quarter 2014, Operable  Unit 2 (OU2) Landfill Site, December 15, 2014.

November 2014

  • Change in Monitoring Frequency for OU2 Post-Closure OM&M, Addendum to the Phase 2 Corrective Action Plan for the Operable Unit 2 Landfill Closure at Lowry, November 21, 2014.

July 2014

  • Results for the July 2013 Operable Unit 5 Groundwater Monitoring Program, Main TCE Plume, Headquarters  Area TCE Plume, and the Fire Training Zone TCE Plume, dated July 21, 2014.
  • Post-Closure Operation and Maintenance Report - November 2012 through October 2013, Operable Unit 2 (OU2) Landfill Site, July 21, 2014. 

June 2014

  • Groundwater, Surface Water, and Soil Vapor Monitoring Report, Post-closure Monitoring - Fourth Quarter 2013 and First Quarter 2014, Operable Unit 2 (OU2) Landfill site, approval June 20, 2014.
  • Letter Completion Report - Removal of Asbestos Contaminated Soil, Denver Montclair International School, 306 Red Cross Way, June 20, 2014.