REP46184

• Permit No: M1986104
• IBM Index Class Name: Report
• Doc Name: ENVIRONMENTAL SITE INVESTIGATION
• Media Type: D
• Archive: No

' 1.0 INTRODUCTION
' 1.1 Background
In July, 1998, a chemical release was reported at the Montgomery Pit, B & B Excavating facility in
' Eagle County, Colorado. This facility is located on US Highway 6, approximately 2 miles west of
the town of Eagle, Colorado. The chemical release occurred when two drums of Repco Kill R weed
killer were dumped onto a stockpile of soil to be used for construction products including sand,
' gravel, road base and asphalt concrete. The stockpile of potential contaminated soils was
approximately 1,000 cubic yazds. The Repco Kill II weed killer contained 2%2,4-D, 2%Bromacil,
and 90% Diesel.
' B&B Excavating retained Greg Lewicki & Associates and TechLink Environmental, Inc. (TechLink)
to perform an Environmental Site Investigation at the Montgomery Pit in response to the reported
' chemical release. A description of site investigation activities, sampling program, lab results,
findings and recommendations aze presented in this report.
1.2 Site Description
' The Montgomery Pit facility is approximately 46 acres. Operations at the Montgomery Pit include
open pit sand and gravel mining, gravel crushing, vibratory screens and classifiers, sand and rock
' washing plants, process water ponds and settling basins, sand, gravel and road base stock piles, a
ready-mix concrete batch plant, ahot-mix asphalt batch plant, fuel and oil storage, equipment
storage, an equipment bone yazd, and truck scales.
' The site is located next to the bank of the Eagle River. The layout of facility operations and the soil
stockpile with respect to the Eagle River aze shown on Figure 1.
1.3 Scope of Work
' The following activities were conducted as part of this investigation:
• Review of the "Draft Sampling and Analysis Plan (SAP) for the Montgomery Pit
' Facility" (Dames & Moore, December 1998)
• Review of the "Amendment to the SAP Montgomery Pit" (Greg Lewicki &
' Associates, January 29, 1999)
• Review of the "Response to Comments, Draft SAP, Montgomery Pit, Permit M-86-
104" (Greg Lewicki & Associates, January 1999)
' Preliminary field investigation
• Site assessment including soil and water sampling
• Analysis of soil and water samples
' Review of analytical results and report write-up
Environmental Site Investigation Montgomery Pit
' Techl.ink Environmental, Inc. I B&B Excavating