In response to community concerns, the comment period was extended to 12/4/2014. Early investigations revealed elevated levels of volatile organic compounds (VOCs) including the chlorinated solvents trichloroethylene (TCE) and perchloroethylene (PCE) in wells in the... Extensive groundwater contamination resulting from industrial activities led to the listing of the Tucson International Airport Area (TIAA) as a Superfund Site by the U.S. Environmental Protection Agency (USEPA) in 1983. 1981: The EPA and the Arizona Department of Health Services identified VOCs in the upper zone of the regional aquifer beneath the TIA. Waste disposal practices led to widespread soil and groundwater contamination at the site. 2009: In September 2009, the advanced oxidation treatment system became fully operational. Results of this evaluation and additional studies would be presented in the focused FS for 1,4-dioxane. Air Force Plant 4 (AFP4): November 13, 1997 Informational Teleconference . These facilities were designed so that they would build aircraft parts for the government. The U.S. Environmental Protection Agency identified contaminants in the upper several hundred feet of the regional aquifer underlying areas around the Tucson Airport and identified a number of sources of contamination, including some at AFP 44. 1991 - 1992: An remedial investigation (RI) of soil contamination at AFP-44 was conducted with supplemental field work being completed in 1993 and 1995. From 1994 to 1996, Dual-Phase Extraction (DPE) systems were installed to treat VOC-contaminated soils and groundwater. 2014: The Air Force issued a Proposed Plan for No Further Action (NFA) at the 1980s Pistol Range. 2012: The AF entered into a Performance Based Remediation initiative to maximize the effectiveness of remedial actions at AFP-44. 1993: A risk assessment was performed to identify soil sites that required remediation. This agreement will ensure that EPA and ADEQ will continue to have an active role in the investigation and cleanup performed by the AF. Subsequent investigations resulted in the delineation of three distinct areas of contamination, the largest of which encompasses about 5 sq mi of aquifer surface area. Air Force, EPA, and Arizona agree to clean up groundwater at Air Force Plant 44 SAN FRANCISCO - Today, the Environmental Protection Agency announced that the Air Force has signed an agreement with EPA and the Arizona Department of Environmental Quality to clean up Air Force-owned property at Air Force Plant 44, part of the Tucson International Airport Area Superfund Site in Tucson. 1987: A large-scale pump, treat, and reinjection system was constructed. The sole-source regional aquifer underlying AFP 44 provides potable water for municipal, commercial, private, and industrial supplies for the City of Tucson, the municipality of South Tucson, adjacent areas of Pima County, and the Tohono O’odham Nation. This system was installed to provide containment and remediation of regional aquifer groundwater contamination. The contracting team was tasked with performing expedited field investigations and treatability studies to provide the AF with alternative remedial. Walsh, Walter (EPA HQ) Cardenas, Adele (EPA Region 6) Bond, David (EPA Region 6) Stubblefield, Joyce (EPA Region 6 Federal Facilities Coordinator) These activities included: documenting potential sources of 1,4-dioxane; compiling and reviewing existing information related to 1,4-dioxane in groundwater; and identifying data gaps for defining the extent of the 1,4-dioxane contamination in the Regional Aquifer. Vadose zone contamination was reduced to a level that will not impact groundwater above the TCE MCL. Air Force Plant #44 Follow @currentopscom. It also provides a framework for the work to be done and a schedule for all the work required at the site. The initial operational capability plan took effect May 1 and the full operational capability date is scheduled for Oct. 1, to avoid making financial changes mid-fiscal year. United States Air Force Plant 42: | | | United States Air Force Plant 42 | | | ... World Heritage Encyclopedia, the aggregation of the largest online encyclopedias available, and … | Heren, dames en kinderen Air Force Plant 42 is a music company based out of 800 Independence Ave Sw, Washington, DC, United States. Hughes Aircraft Company Air Force Plant 44, RCRA Appeal No. Kids Nike Air Force 1 Sneakers - Maat 28 - Unisex - zwart Air Force Plant 44 is southwest of Tucson and is operated by Raytheon Missile Systems Company [Hughes Aircraft]. U.S. Air Force Plant 44 | Site Repository. At Site 2, post-SVE monitoring was completed. Most of the... Below are partners associated with this project. Recent projects by the USGS in the area include an investigation of the extent and trends in 1,4-dioxane contamination in groundwater and an investigation of hexavalent and total chromium in groundwater. Concentrations of TCE increased in 36 wells, remained the same in 32 wells, and decerased in 33 wells. The area having contaminated groundwater was designated the Tucson International Airport Area (TIAA) Superfund Site and the U.S. Air Force was given the responsibility for cleanup activities for part of the site. 2006: The U.S. Geological Survey Arizona Water Science Center and the USAF Aeronautical Systems Command sampled several wells in July to investigate 1,4-dioxane contamination in groundwater west of AFP-44 and to further define the extent of the 1,4-dioxane groundwater plume. It is the Antelope Valley's second-largest employer, and is considered a Geographically Separated Component of Edwards Air Force Base, 23 miles northwest of the airport. Quick facts. Get the Fire Dept latest news, contact info, logo, patch, photo, map, fire equipement, statistics, type of firefighters. As a result, ADEQ, EPA, and the AF agreed upon two locations where monitor well pairs would be installed to help assess the extent and degree of groundwater contamination near EPA-03. Participants . In 1996 and 1997, the USAF produced a new ROD that specified SVE treatment of VOC contaminated soils at AFP-44. Also during this time period, an evaluation was performed of aerobic biodegradation of TCE and 1,4-dioxane in groundwater. Over time, many of the facilities have gone on to be purchased by private operators, although a few still remain in operation as government facilities. Groundwater contamination was first noted in the early 1950's when elevated levels of chromium were detected in a municipal water supply well near AFP-44 and when residents near the TIA complained about water quality problems in their private wells. In the 34 wells sampled, 1,4-dioxane concentrations ranged from non-detect in 10 wells to a high of 11 ppb in 2 wells (Figure 1). In early 2008, the DPE system was evaluated for operational efficiency and it was determined that it was no longer effective. Air Force Plant 4 is a government-owned, contractor-operated aerospace facility in Fort Worth, Texas, currently owned by the U.S. Air Force and operated by Lockheed Martin Aeronautics. Of AFP-44 ( North of LOS Reales Road ), sweaters, hoodies winterjassen! 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