A rrtA EPA Begins Five-Year Review of ,5S't^A Site Remedy United States Environmental Protection Asenrv City of Perryton Well No. 2 Superfund Site Perryton, Ochiltree County, Texas August 2012 The Five-Year Review is: • A regular inspection of a Superfund site that has an ongoing cleanup that was initiated five years earlier; • Conducted at sites that need continued monitoring because of waste left behind; • A way to determine if a cleanup continues to protect people in the community and the environment; and • A chance for you to tell EPA about site conditions and any concerns you have. Checking up on Superfund sites: the Five-Year Review The U.S. Environmental Protection Agency (EPA) conducts regular checkups, called five-year reviews, on Superfund sites with ongoing cleanup activity or where the cleanup has left wastes that limit site use. The EPA has begun its second five-year review of the ground water cleanup action that was started in 2003 at the City of Perryton Well No. 2 Superfund Site in the City of Perryton, Ochiltree County, Texas. Well No. 2 was a water supply well contaminated with carbon tetrachloride that migrated from nearby grain silos. The Perryton Equity Exchange operated the grain silos and used an 80/20 fumigant mixture containing 80 percent carbon tetrachloride and 20 percent carbon disulfide in the storage bins. The fumigant was available prior to the 1960s, and its use was discontinued by 1985. Well No. 2 was operated by the City of Perryton from approximately 1946 to 1989 when carbon tetrachloride was discovered in the water samples. Other contaminants include chloroform, nitrate, and the herbicide atrazine. The selected site-wide remedy in 2002 was a ground water pump and treat (P&T) system composed of Well No. 2, a second extraction well, and an air stripper treatment plant (ASTP) to remove the carbon tetrachloride from the extracted ground water. The treatment plant and Well No. 2 began full-time operation in November 2002 and the second extraction well began operation in September 2003. Sample results in 2007 confirmed that ground water in the lower flow zone of the Ogallala aquifer has been cleaned up. Contamination in the upper flow zones of the aquifer is present only in the area surrounding Well No. 2 and the grain silos along West Santa Fe Ave. and West Brillhart Ave. An attempt to pump contaminated ground water from two additional extraction wells completed in the upper flow zones of the aquifer was not successful. Well No. 2, which served as a conduit for migration of contaminants between the upper and lower flow zone, was plugged and abandoned in December 2010. Along with well abandonment, the P&T system was shut down. Since the P&T system is not capable of cleaning up the upper units of the aquifer, EPA prepared a technical impracticability (TI) waiver for the carbon tetrachloride and nitrate cleanup standards in the upper units of the Ogallala aquifer. EPA signed a Record of Decision Amendment in September 2011 that amended the 2002 selected remedy to include waiving the cleanup standards for carbon tetrachloride and nitrate and establishing a TI zone in the upper flow zones, adding institutional controls for property above the remaining contaminated ground water, and requiring performance of five-year reviews. Since contaminants remain at the City of Perryton Well No. 2 Superfund Site above levels that allow for unlimited use and unrestricted exposure, EPA will perform site reviews at a minimum of every five years to determine if the cleanup at the site is still protecting public health and the environment. During the review, EPA studies information on the site, including the cleanup and the laws that apply, inspects the site, and may interview people in the nearby area. The EPA will consider any information or concerns that people may have about the site during the review. Further information about the five-year review is described in the following paragraphs. ------- The Five-Year Review: continuing to protect you and the groundwater resource The EPA's Remedial Project Manager (RPM) is working with State and Federal scientists and engineers to evaluate the site. The site team will review the monitoring data, records of activities during the past five years, and historic information on the nature and extent of contamination identified during the site investigation. The site will be inspected to see if the cleanup continues to function properly and if it is well maintained. The RPM will talk with local officials and property owners to see if they have any concerns or if there have been any changes in local policy or zoning that might affect the original cleanup. Interviews with local officials and members of the community are scheduled for September 2012. The RPM will use the information collected to assess whether or not the cleanup continues to be protective of human health and the environment. A report will be made available to the public once the five-year review is complete. The report will include historical information on the site and cleanup activities, site inspection results, data review and analysis, conclusions and recommendations. A copy of the report will be made available at the Perry Memorial Library, 22 S.E. 5th Street, Perryton, TX 79070-3112, 806.435.5801; and, on the Internet at http://www.epa.gov/region6/6sf/6sf- 5 year reviews.htm. You will be notified when the report is finished. At the above internet link, you may also view a copy of the first five-year review report completed for the site in 2008. What happens after the review? The EPA will insure that if any problems are identified by the review, they will be addressed. Since groundwater contamination remains around the former source area that prevents unlimited use and unrestricted exposure, EPA will return every five years for another review. The EPA and the State will also continue to monitor the site between reviews. If at any time you have concerns or questions about the site, let EPA know. You can contact EPA through the Community Involvement Coordinator or the Remedial Project Manager, at 1-800-533-3508 (Toll Free Number). For more information, please contact... Vincent Malott U.S. EPA Region 6 Remedial Project Manager 214.665.8313 or 1.800.533.3508 (toll-free) Malott. vincent@epa. gov Jason McKinney U.S. EPA Region 6 Community Involvement Coordinator 214.665.8132 or 1.800.533.3508 (toll-free) Mckinnev. i ason@,epa. gov April Palmie Texas Commission on Environmental Quality Project Manager 512.239.4152 April. Palmie@tceq.texas. gov Inquiries from the news media should be directed to the External Affairs Office at 214.665.2200. A Site Status Summary for this site can be found at http://www.epa.gov/region6/6sf/6sf-tx.htm Call U.S. EPA at 1.800.533.3508 (toll-free) to receive a Spanish translation of this fact sheet. Para recibir una traduction en espanol de esta hoja de datos, comunicarse con la Agencia de Protection del Medio Ambiente de los EEUU (la EPA) al numero de telefono 1.800.533.3508 (llamada gratis). Information Repositories Perry Memorial Library 22 SE 5th Street Perryton, TX 79070 806.435.5801 Monday - Thursday, 9:30 a.m. to 8:00 p.m. Tuesday - Wednesday, Friday, 9:30 a.m. to 5:30 p.m. Saturday, 9:30 a.m. to 1:00 p.m. Texas Commission on Environmental Quality Building E, Records Management, First Floor 12100 Park 35 Circle Austin, Texas 78753 512.239.2920 Monday - Friday, 8:00 a.m. to 5:00 p.m. ------- MPMW03 Image courtes\ ;rvice L« >oration City of Perryton Well #2 Superfund Site Perryton, TX Legend ©Groundwater Monitor Well aql Municipal Well #2 Treatment Plant Carbon Tetrachloride Contamination in Groundwater . m | Horizontal Boundary KT of Tl Zone W 250 500 Feet Data Sources: Well locations, Plant locations, and Tl zone from CH2MHNI 2006 Map of Horizontal Extent of Tl Zone; CT Groundwater Contamination from EPA Region t Basemap from Bing Maps Hybrid. EPA Region 6 GIS Support i JQL 1 Dallas, TX 1 V\|// J 20120823 BG01 V O C K H t l O MA ------- vvEPA United States Environmental Protection Agency Region 6 1445 Ross Ave. (6SF-VO) Dallas, TX 75202 ------- |