Environmental Projects

Design and Construct Biowall - NASA Johnson Space Center Project Name and Location: Design and Construct Biowall, NASA Johnson Space Center
Project Owner: National Aeronautics and Space Administration
Project Completion: March 2014
Contract Value: $1.3M
Description of Work: Ayuda provided pre-construction planning, design, and installation of a subsurface mulch biowall at NASA’s Johnson Space Center in Houston, Texas. The wall was installed using continuous trenching techniques. The biowall passively treats contaminated groundwater associated with two former surface impoundments that released Freon 113, trichloroethene, and other volatile organic compounds and metals. By constructing the walls of organic matter (mulch and manure), the biowall remediate groundwater contamination by breaking down the chemicals as they pass through the organic wall materials.

Environmental Restoration - Hawthorne Army Depot

Project Name and Location: Hawthorne Army Depot Environmental Restoration and Solid Waste Management, Mineral County, NV
Project Owner: USACE Tulsa District
Project Completion: Ongoing
Contract Value: $1M
Description of Work: Ayuda is the Prime contractor for this project at the Hawthorne Army Depot at three inactive solid waste management units. Contamination includes explosives such as ship mines and bombs, RDX, VOCs, petrol, oil, and lubricants. Activities include performing a RCRA Facility Investigation (RFI), Corrective Measures Study (CMS), and preparing Decision Documents. Ayuda has installed four new groundwater monitoring wells and is performing groundwater monitoring and indoor air monitoring as part of data collection.

Environmental Remediation - Former Sioux Army Depot

Project Name and Location: CERCLA Soil/Groundwater Investigation at Former Sioux Army Depot
Project Owner: USACE Omaha District
Project Completion: June 2015
Contract Value: $649K
Description of Work: Under this performance-based remediation contract for USACE Omaha District, Ayuda provided investigation and remediation services, including field work, an RI/FS Addendum, and a risk-based corrective action (RBCA) investigation at the former Sioux Army Depot (AD), in Cheyenne County, NE. This Formerly Utilized Defense Site (FUDS) is being remediated under the Defense Environmental Restoration Program (DERP) in accordance with CERCLA/SARA, the NCP, and state regulations.

Site Investigation - Davis Monthan AFB
Project Name and Location: Davis-Monthan AFB Site Investigation/SVE Upgrade, Tucson, AZ
Project Owner: USACE Omaha District
Project Completion: Ongoing
Contract Value: $1M
Description of Work: Ayuda is the Prime contractor for this project, performing a site investigation and an upgrade to an existing SVE system as part of the CERCLA process. Ayuda installed shallow and deep soil borings to define the nature and extent of contamination from underground storage tanks. The deep wells are being converted to soil vapor extraction wells.

Environmental Remediation - Lincoln
Project Name and Location: Environmental Remediation Services, Atlas Site 6, Former Lincoln AFB, Tecumseh, NE
Project Owner: USACE Omaha District
Project Completion: Ongoing
Contract Value: $203K (RI), $544k (Pilot Study)
Description of Work: Ayuda is providing remediation services under two performance-based remediation contracts for USACE Omaha District at the former Lincoln AFB Atlas Missile Site 6 near Tecumseh, NE. This FUDS site is being remediated under DERP in accordance with CERCLA/SARA, the NCP, and state regulations. The first contract, which included field work and an RI Addendum, was completed in October 2015. Ayuda developed and implemented a field program to address RI data gaps and more accurately define the horizontal and vertical extent of trichloroethylene (TCE) contamination in the perched aquifer and the horizontal extent of TCE in groundwater in the primary aquifer. Ayuda was issued a second contract to implement a pilot study to evaluate the effectiveness of BOS 100® for remediation of the TCE. Ayuda has completed the BOS 100® injections and the 6 of the 7 performance monitoring events. All work will be summarized in a completion report.

Building Demolition and Asbestos Abatement, Old Hospital Complex, Fort Carson
Project Name and Location: Building Demolition and Asbestos Abatement, Old Hospital Complex, Fort Carson, CO
Project Owner: USACE Omaha District
Project Completion: May 2014
Contract Value: Phase I: $2.9M, Phase II: $2.3M
Description of Work:Ayuda was the prime contractor on this project and self-performed 37% of the work including asbestos oversight, asbestos air monitoring, building inspection, project design, asbestos abatement project management. Ayuda’s own EPA AHERA and State of Colorado-approved Asbestos Remediation Specialist also drafted the project design, the Asbestos Abatement Plan, the Air Monitoring plan, the Demolition Plan, the Soils Abatement Plan, interim reports to CDPHE, and the final closure report.

Environmental Remediation - Turtle Bayou Superfund SiteProject Name and Location: Remedial Design/Remedial Action, Turtle Bayou Petro-chemical Superfund Site, Liberty County, EPA Region 6
Project Owner: USACE Tulsa District
Project Completion: December 2010
Contract Value: $3.4M
Description of Work:Ayuda completed a large-scale CERCLA remedial design/remedial action (RD/RA) project at the Turtle Bayou Petro-Chemical Systems Superfund Site, located near Liberty, Texas. The project entailed three components: remediation of soil contamination, resurfacing a road that serves as a cap over impacted soils, and improvement of flow into Turtle Bayou by the removal of channel sediments. Ayuda also performed community relations activities throughout RD/RA activities. Ayuda performed initial remediation of soils impacted by benzene and naphthalene using in-situ chemical oxidation. Ayuda utilized a geoprobe drilling rig to drill holes into the soil every 4 feet, throughout the entire remediation area footprint to a depth of about 14 feet. Liquid reagents were injected into soils in the remediation area. Due to high-plasticity clays present at the site, Ayuda selected ex-situ biotreatment as a secondary remediation technology. Once contaminant levels were below goals set by EPA, the remediation area was restored with seed and landscaping. Ayuda installed monitoring wells for continued groundwater monitoring activities. Ayuda also completed the third CERCLA Five-Year review for the site.