Mountain View Mobile Home Estates
The Mountain View Mobile Homes Estates (MVMHE) Superfund site is located on the east side of the town of Globe in Gila County, Arizona. The 17-acre mobile home subdivision was developed in 1973 at the site of the Metate Asbestos Corporation Asbestos Mill. The property is owned by the state of Arizona.
Annual inspections and inspections following inclement weather continue to be conducted along with regular mowing, brush removal, and routine maintenance. EPA has finalized an Explanation of Significance Difference (ESD) to the Record of Decision (ROD) making the institutional controls imposed be ADEQ’s Declaration of Environmental Use Restriction (DEUR) part of the final remedy for the Site. A Five Year Review conducted in early 2015 by the U.S. Army Corps of Engineers, EPA, and ADEQ determined that the site remedy continues to be protective of human health and the environment.
A Declaration of Environmental Use Restriction (DEUR) for the site has been recorded.
On May 16, 1983, the U.S. Environmental Protection Agency (EPA) conducted a public meeting located in Globe, Gila County, Arizona to present the feasibility study (FS) report, answer questions, and take public comment. Approximately 125-140 people were in attendance. Written comments received on the remedial investigation (RI) and FS supported permanent relocation as the only way to effectively mitigate the human threat. In 2010, community input was solicited as part of the 2010 five year review (FYR) report.
1953 - 1972: Before 1973, three mills in the area processed chrysotile asbestos ore from nearby mines. Asbestos mill tailings were used as primary landfill material before the site was partially covered with topsoil.
1973: Because they failed to meet new EPA standards for emissions, two of the mills were ordered to close by the Gila County Air Quality Control District. The Metate Asbestos mill was ordered to close by the County. Before closing, however, the owner obtained a permit to rezone the property into a residential subdivision and continued operations for several weeks while residents were moving into the mobile home community.
1974: MVMHE was built at the site of the defunct Metate Asbestos Company Mill. The mill buildings and asbestos-laden equipment remained standing in the middle of the mobile homes. The third mill, Jaquays Mining and Equipment Corporation Asbestos Mill with its large pile of asbestos mill tailings, continued to operate a few hundred yards from the mobile homes.
1979: In October, asbestos contamination at the site was discovered by local health officials inspecting the waste disposal system. Small piles of asbestos mill tailings were found against the abandoned mill structures and the adjacent railroad tracks.
1980: In January, the Governor declared an emergency at the site, and the State provided temporary housing for the residents while the site was being decontaminated. The old mill buildings were demolished, and topsoil was used to cover the contaminated soil. Wind, water, and public activity soon eroded the soil covering, which again exposed the asbestos tailings.
1983: In April, EPA and the Federal Emergency Management Agency agreed to temporarily relocate MVMHE residents while the four-week RI/FS was completed in May, pursuant to a State Superfund contract. In June, the EPA selected a remedy to clean up the site that included: permanently relocating the mobile home residents; cleaning the site and demolishing and burying on site all the homes and sewage treatment plant; closing the site by covering it with either clay or a synthetic material, and placing clean soil on top of the site; fencing the area; and periodically inspecting and maintaining the site. On September 8th, the site was officially placed on the EPA's National Priorities List (NPL).
1985: Permanent relocation of all residents was completed by March, and ownership of the purchased property was transferred to the State. Following relocation of the residents, the site was capped. The homes and other structures were crushed and buried on site in two natural depressions. Drainage culverts and enclosed pipes were installed to reduce the potential for erosion of the cover soils. A filter fabric was placed over the entire site to act as a physical barrier to upward movement of asbestos fibers and to prevent erosion. A 21-inch layer of clean soil was placed over the filter fabric and compacted, and 3 inches of crushed rock was added to complete the cover. The site was fenced to protect the integrity of the cover. The State agreed to maintain the site for a minimum of 20 years.
1988: The EPA and the State determined that the remedial action is protective of public health and the environment and that no further cleanup is required as long as the cap is in place. The site was deleted from the NPL.
1991: A five-year review (FYR) was conducted and it confirmed the effectiveness of the remedy and ensured the safety of the site.
1999: A second FYR, confirmed that the remedy continues to be effective in meeting objectives and remains protective of human health and the environment.
2005: A third FYR was conducted by the Arizona Department of Environmental Quality (ADEQ) and signed in September. An annual inspection was completed.. Minor deficiencies were noted with fencing and storm water channels. No significant erosion of the protective cap was noted. The remedy continues to be effective in meeting objectives and remains protective of human health and the environment.
2006 - 2007: An annual inspection was conducted in April. Several routine inspections were conducted by ADEQ and their consultant. The entire property was re-surveyed and the various land plats were consolidated into one parcel. A Declaration of Environmental Use Restriction (DEUR) was placed on the deed and recorded with Gila County. In December, the City of Globe was awarded a $50,000 Brownfields grant from ADEQ to perform an environmental site assessment on the site for possible future development.
2008: Routine inspections were conducted by ADEQ as established by the State Superfund Agreement with EPA Region IX. Minor problems with fencing and storm water conveyances were noted and were repaired. Sediment accumulation in the subsurface and surface channels was removed and deposited on site. ADEQ conducted maintenance on the surface and subsurface drainage channels to remove accumulated sediments in the three channels. Repairs were performed on fencing and channel gratings.
2009: Quarterly maintenance was conducted.
2010: A FYR was conducted and confirmed that the remedy is intact and has not been compromised by erosion or other activities that could affect the remedy negatively. Minor problems with fencing and storm water conveyances were noted and a contractor has been hired to conduct repairs. Sediment accumulation in the subsurface drainage pipeline No. 1 will be removed and deposited on site. Repairs will be conducted on fencing and channel gratings.
2011: Sediment accumulation in subsurface and surface channels was removed and stored on site. Fences and channel gratings were repaired as needed.
2012: Quarterly inspections and inspections following inclement weather were conducted. Sediment accumulation is currently under control but it is anticipated that removal will be necessary in 2013-2014.
2013: The annual inspections and inspections following inclement weather were conducted. An accumulation of sediment in the channel between the site, U.S. 70 and culverts under the site and the highway required removal. ADOT conducted the cleanout of the culvert under the highway, while ADEQ contractors cleared the channel and culvert at the site. Additionally, the grates at the ends of the concrete channel across the southwest corner of the site and damaged portions of the perimeter fence were repaired.
2014 - 2015: The annual inspections and inspections following inclement weather were conducted. ADEQ began discussions regarding potential, appropriate re-uses for the Site. In early 2015 the EPA signed an Explanation of Significant Difference (ESD) to the Record of Decision (ROD) making the DEUR a part of the ROD remedy for the Site. In addition the U.S. Army Corps of Engineers, assisted by EPA and ADEQ conducted a FYR of the site, and concluded that the remedy continues to be protective of human health and the environment.
The air and soils on the site were contaminated with asbestos. Asbestos mill tailings were used as primary landfill material before the site was partially covered with topsoil.
On November 30, 1979, the Arizona Department of Health Services sent residents a letter apprising them of the health hazard and recommending they take immediate measures to minimize their personal exposure risk. Prior to site cleanup, area residents who came in direct contact with or accidentally ingested the asbestos-containing soil may have been at risk. In addition, inhaling asbestos fibers posed a potential for adverse health effects. Approximately 100 to 130 people lived in the mobile home park. Direct contact by children is the greatest concern because their life expectancy exceeds the prolonged latency periods for asbestos related disease. A memorandum titled Community Asbestos Exposure in Globe, Arizona, prepared by the Center for Disease Control's Chronic Exposure Division in August 1981, stated: "Both human and animal studies have shown that chrysotile asbestos, the form present in Globe, is fibrogenic and carcinogenic."
The site is located in the Gila River drainage basin and surface water drains to the San Carlos River. Groundwater is not currently used on site but the regional Gila Conglomerate Aquifer is the primary source of water in the area. The site is not considered a threat to groundwater resources, so no hydrogeologic investigation has been conducted.
*In Arizona, but outside the Phoenix area, call toll-free at (800) 234-5677. **Call EPA’s toll-free message line at (800) 231-3075.
Repositories that were established for public review of the reports included: The Globe City Hall, the Globe Public Library, the Arizona Department of Health Services Library in Phoenix, and the EPA Region 9 Library in San Francisco, CA.