In late September 2006, the U.S. Environmental Protection Agency (EPA) began the removal clean up at the Helena Chemical Company facility (site) in Mission, Texas. The removal action involves digging up the contaminated soil within the on-site facility property underneath a deteriorating asphalt cap.
As of April 13, 2007 EPA has excavated and stockpiled approximately 13,300 cubic yards of soil for further analysis and waste characterization. To date, EPA has removed approximately 12,950 cubic yards of contaminated soil for off site transportation and disposal.
Excavated soils are stockpiled on Site pending transport for disposal. A plastic sheathing is being used to cover all stockpiles and excavated holes on Site to minimize offsite migration of odors, dust, and the potential for contaminated storm water runoff. A frac tank has been mobilized on Site and will be used for containment and water quality sampling of any potentially contaminated storm water.
As of April 13, 2007, 841 particulate and gaseous phase air samples, 182 confirmation of cleanup soil samples, 6 backfill source soil samples, 4 sludge/sediment samples, and 2 water samples have been collected and submitted to a fixed laboratory for analysis. All pesticide particulate and vapors levels on-site and in the surrounding community have been below the site-specific action levels.
An EPA community office trailer is available on Site. A map which will have updated daily information on particulate air monitoring data is being posted next to the entrance of the office trailer for the public to stop by and view. This information will also be available in hard copy and electronic format. The office is open to allow community members an opportunity to speak with an EPA representative in person about any questions or concerns they may have about ongoing Site activities. This office has up to date and current information available in both English and Spanish.
Transportation and disposal of contaminated soil from Site and from residential property.
Continue to conduct air monitoring and sampling on Site and in the community.
Continue off site transportation and disposal of contaminated soil.
Continue site restoration with clean backfill soil in excavation areas that have met clean up goals for 602 North Holland Site.
EPA is committed to the public health and safety of its workers and the neighboring community. Results of the air monitoring and air sampling have indicated that the dust control measures taken are effective.
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