EP 1110-1-19
30 Jun 01
findings and results of SI and RI activities. Any prior removal and remedial activities that have
occurred at the site should be described. Any other OUs that have been designated at the site
should be discussed and the OU addressed by the RA report should be introduced. An example
introduction is provided in Exhibit 4-2.
b.
Because the introduction provides background information on the entire site, most
of it could also be used as the introduction of the RA report for other OUs at the site. The
information for the introduction can be taken from reports prior to the RD or RA, such as the
RI/FS or ROD.
Exhibit 4-2
Example Introduction (Section 1)
The U Creosote Superfund Site is located approximately two miles from the City of Live Oak, Suwanee County,
Florida, at the intersection of Sawmill Road and Goldkist Road. Homes, businesses, light industry, a trailer park,
a private airport, and a county storage yard are located within one-half mile of the site. Approximately 450
people live in the trailer park. Sinkholes and public and private wells lie within two miles of the site.
From 1948 to 1986, the ABC company operated the U Creosote site as a lumber treatment facility. Lumber
treatment processes included the pressure-treatment of lumber products, mainly with creosote and occasionally
with pentachlorophenol (PCP). Small rail cars were used to move lumber to two treatment cylinders. A mixture
of either creosote and water or PCP and petroleum was used to treat the lumber. The treated lumber was dried
on racks over bare soil and stored in an area north of the treatment cylinders.
Wastewater from the treatment cylinders was discharged to an oil-water separator. The creosote recovered from
the oil-water separator was sent to a storage tank for reuse. If the creosote was determined to be off
specification, it was sent to a spent creosote storage tank and properly disposed of at an off-site location at a
later date. Wastewater from the oil-water separator discharged through a culvert and a drainage ditch to an
unlined three-acre lagoon located in the southwest corner of the site.
In 1989, a former owner of the facility notified Region 4 of the U.S. Environmental Protection Agency (EPA)
that hazardous materials may have been handled at the site. In response, the Florida Department of
Environmental Regulation (FDER) conducted sampling at the site in July 1990. The results showed that soil and
sludge in the area of the treatment cylinders were contaminated with a number of organic compounds and that
the treatment cylinders contained small amounts of solidified creosote and PCP. In addition, creosote was found
in the lagoon and the storage tanks. No contamination was detected in the aquifer underlying the site. EPA
proposed in December 1990 that the site be placed on the National Priorities List (NPL). The listing of the site
became final in September 1991.
The potentially responsible parties (PRP) conducted a remedial investigation and a feasibility study (RI/FS) at
the site between 1992 and 1996 under the terms of a Federal administrative order on consent (AOC). Testing
during that time confirmed that soils and sediments in the lagoon and drainage ditch were contaminated with
polycyclic aromatic hydrocarbons (PAH). During the RI/FS, EPA and the PRPs agreed to address the site as two
operable units (OU), OU1 and OU2.
OU1 included the lagoon and the former plant facility. Cleanup activities were completed in March 1996, under
a Record of Decision (ROD) signed on July 25, 1995. The lagoon was drained, contaminated sludge and
sediment was excavated, and wastewater was treated and discharged to a publicly owned wastewater treatment
facility. Highly contaminated sludge and soil were solidified on site.
A ROD for OU2 was signed March 8, 1996, which is the subject of this report.
4-4
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