Project Name: Barton Property, Englewood, Colorado
Date Project Began: April 2009
Date Project Completed: Ongoing
Project Description: Casey Resources Inc. (CRI) was contracted by Winslow Crane Services Co. (WCSC) to perform an environmental assessment of the Barton Property (Property), which was the location of the former General Iron Works Facility from 1921 to 1986. A phased approach to the investigations was used so that the client could terminate subsequent tasks. CRI initially completed a Phase I Environmental Site Assessment for the Property. Following this task, CRI used data from prior environmental investigations to design a focused site investigation to further assess the environmental hazards that impact the Property. These tasks included an Asbestos Containing Material (ACM) survey that included a ground surface survey followed by a test pit excavation program, sampling of suspected lead paint covered machinery and concrete, installation of groundwater monitoring wells, and collection of groundwater samples. Based on the site investigations, total arsenic, total lead, and benzo(a)pyrene were identified within non-native fill material at concentrations greater than the Colorado Department of Public Health and Environment (CDPHE) proposed soil cleanup levels for residential development. ACM was identified in some site soils and was also suspected to occur on pipelines located within inaccessible underground pipe chases. Lead paint was also confirmed to exist on some of the remaining equipment located onsite. The groundwater sampling program included the sampling of eight new monitoring wells. The groundwater quality data collected indicated that only limited impact to groundwater currently exists. Tetrachloroethene (PCE) and manganese concentrations in groundwater exceeded the Colorado Groundwater Standards for those compounds; however, both these constituents were also identified at elevated levels in background monitoring wells. As a result of the data collected during the site investigations, CRI was requested to prepare a Voluntary Cleanup Plan (VCUP) Application for the Property which would identify the strategies to remediate the environmentally impacted areas at the Barton Property. The VCUP Application has been submitted and approved by the CDPHE. Demolition oversight and remediation of discovered environmental impacts is ongoing.
Type of Contamination: Soil contamination including lead, arsenic, benzo(a)pyrene, ACM, and potentially total petroleum hydrocarbons (TPH).
