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 Opera,ine Sen~ices, Inc. ' San Acacio Landfill Tnp Rapnrl
START, EPA Reeion VIII I Revision. 0
Contract No. 6S-wi-0031 i Dale: 012000
Pagc 2 0l 3
gravel, onto county roads. The complainant also expressed concerns regarding potential groundwater
contamination as a result of alleged toxic waste dumping that occurted during the hme the landfill vaa:; active
(Colorado Department of Public Health and the Environment (CDPHE) 2000).
i
I
3.0 SITE ACTIVITIES
START members Eric Scott, Duane Newell, and Rebecca Laramie arrived a[ the San Acacio Landoll site
on February 3, 2000. EPA On-Scene Coordinator, AI Lange, and EPA Coordinator, Janice Pearson, met the
START team on site along with Matthew Valdez Ind Jose Ortiz, both representatives of Costilla County.
Other persons on site during various times of the day consisted of the following: Charles Atencio, Costilla
i
County Commissioner; Santos Martinez, Costilla) County Land Use Administrator; Virginia Cordova,
Costilla Counry Commissioner; Elizabeth Pacheco, Costilla County Administrator; Norland Quinlan, nearby
property owner; and George Lyons, reporter for the Valley Courier (Alamosa, Colorado, newspaper).
The site is generally flat with one hill in the sou[tieast portion. The area where [he gravel pi[ operation
occurred is apparent; however, the landfill trench) locations are not readily apparent. The GeoprobeQJ
activities were spread out to encompass the northern ~talf of the site to ensure that sampling activities covered
all [he property used for the landfill. The northern h~If of the site consisted of light vegetative cover and dirt
roads. A small amount of debris from the landfill v{•as present on the northern half of the property.
Field Activities consisted of using the Geoprobe® toicollec[ soil cores from seven locations (SA01 throug}I
SA07) on the Costilla County property (Figure 2). Photos of the site and the field activities are in Appendix:
A. Soil vvas field screened for organic vapors using a
detector (PID/FID) and samples were collected iC
consisted of a poorly sorted sand with little soil moil
Geoprobe® location at approximately 12 feet below
dense consistency of the soil. Soil samples were colt
S.4-SS-01 vvas collected at Geoprobe® location SA(
a concentration of 3~ parts per million (ppm) above }
background). Sample SA-SS-02 vvas collected at C
where the FID recorded a concentration of 8.8 ppm a
mbination photoionizationdefector /flame ionization
PID/FID indicated possible contamination. Soil
re for all of the soi! cores. Refusal occurred at each
surface (bgs) due to gravel in the sand and the
at Geoprobe® location SA01 and SA04. Sample
1 at a depth of seven feet bgs where the PID recorded
levels (the FID did not record levels above
location SA04 at a depth of seven feet bgs
background (the PID concentration was not above
75-00'_01 OU
F:~STARPSan Acac io Land n ll\FinalTd p RepoTTen. ~~pd bas