REP35073

• Permit No: M1999024
• IBM Index Class Name: Report
• Doc Name: TRIP REPORT SAN ACACIO LANDFILL SAN ACACIO COLO
• Media Type: D
• Archive: No

URS Opcraung Strvicts. Inc.
' sTART. EPA Reewn VIII
Contract No. 6g~1Vi-0031
' 1.0 INTRODUCTION
San Acacio landlill Trip Repon
Revision: 0
Date. 03/2000
Page 1 of S
' URS Operating Services, Inc. (UOS), was tasked by [he U.S. Environmental Protection Agency (EPA) under
the Superfund Technical Assessment and Response Team (START) contract, Number 68-WS-0031,
' Technical Direction Document (TDD) Number 0002-0001, to collect subsurface soil samples and
groundwater samples at the San Acacio Landfill site located near San Acacio, Costilla County, Colorado.
START was also tasked [o submit the samples to an EPA-approved laboratory for analysis and to document
the sampling activities. All sampling activities were conducted using a Geoprobe®. Field work was
completed the week of February 04, 2000.
2.0 BACKGROUND
The San Acacio Landfill is located approximately 1.9 miles south-southwest of the town of San Acacio
within a 10.08-acre tract owned by Costilla County (Figure 1). Approximately 0.20 acres of the tract has
' been used for landfill purposes (Nelson 1994).
' The landfill was maintained by Costilla County for the residents of the San Acacio area. It is not known
when the facility began operations. The San Acacio Landfill was closed in 1994. Within the landfill tract,
' solid waste was managed by excavated closed end trenches. Ivtost full trenches were covered with
indigenous soil. It is estimated that approximately 90% of the solid waste was burned. No maps were
' maintained of the location of closed trenches. Locations of the trenches were determined by field mapping
of the site (Nelson 1994).
' The Colorado Department of Health inspected the San Acacio Facility three times: September 1 I, 1973;
' January 15, 1975; and September 17, 1992. Comments from these inspections included the following: the
site was not manned; burning was common; lack of daily cover; obnoxious odors, rodents, and windblown
solid waste were common. The 1992 inspection noted that there was a potential for surface and/or
' groundwater pollution (Nelson 1994).
' On December 23, 1999, the Colorado Department of Public Health and Environment (CDPHE), Solid Waste
Unit, received a verbal complaint. The complainant expressed concern that the San Acacio Landfill had been
' disturbed and that Costilla Counry workers were transporting and spreading landfill debris, mixed with
' ~i-oozol.oo
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