Subsurface materials across the site generally consist of fill materials overlying a sequence of alluvial deposits, typically silty clay with varying amounts of sand and gravel. Shale or sandstone bedrock was encountered immediately below the either the fill material or alluvial deposits. The fill material is a heterogeneous mixture consisting of varying amounts of clay, silt, sand, gravel, and debris. The debris encountered included metal, foundry sand, coal, brick, concrete, asphalt, glass, and wood. It is assumed the current buildings have been built on top of the fill materials. The fill layer ranges in approximate thickness from 0.5 to 10.0 feet bgs. Alluvial deposits ranging from silty clay with varying amounts of sand and gravel to fine sand were encountered below the fill material in most areas of the site. The alluvial deposits were encountered in thicknesses ranging from 2 to 7.4 feet bgs. In some areas, the alluvial deposits were not present and the fill materials directly overlie the bedrock. Bedrock was encountered at depths ranging from 3.5 to 12 feet bgs. The bedrock ranged from gray and black shale to weathered, tan sandstone. In general, shale was encountered on the eastern portion of the site, while sandstone was generally encountered to the west in REC No. 10. Based upon data collected per the date of the Phase II ESA, concentrations of COPCs detected in shallow soils in REC No. 3 (SP-33 [1-3 feet bgs]; benzo(a)pyrene, benzo[b]fluoranthene, dibenz[a,h]anthracene), REC No. 5 (SP-7 [0-2 feet bgs]; arsenic), and REC 10 (SP-15 [0-2 feet bgs]; arsenic, benzo[a]pyrene) exceeded the WVDEP risk based De Minimis standards for industrial soils. Therefore, historical operations in the vicinity of REC No. 3, REC No. 5, and REC No. 10 may have impacted soils on the site. Sampling results from REC Nos. 1, 2, 4, 6, 7, 8, 9, 11, 12, 14, and the Owner-identified UST location did not indicate the presence of COPCs above the applicable standards. Due to the localized shallow impacts, it was considered excessive to implement a complete risk assessment consisting of, but not limited to, statistical analyses, exposure duration, exposure frequency, and geotechnical data for each individual REC. A preliminary risk estimate was completed in order to estimate the potential risk associated with the de minimis exceedances and to illustrate that the calculated risk will be eliminated upon removal. Based upon the results of the preliminary risk estimate, the data from the site indicated that a potential adverse effect to human health and the environment exists for the surficial soils for REC No. 3, REC No. 5, and REC No. 10. The complete pathway of concern for on-site commercial/industrial and future construction/excavation workers is direct contact to soils. Thus, due to the presence of the aforementioned COPCs in surficial soils, B&N recommends that a Remedial Action Plan (RAP) be prepared to outline the proposed clean-up activities that should be completed to minimize risks to potential receptors. Parcel 137 includes REC-6, REC-7, and REC-8 as described in the Phase II ESA.
Former Use: The site consists of a total of eight existing structures and one building foundation, located just west of the Monongahela River and within the northeast quadrant of 10th Street and Minor Avenue in the City of Fairmont, Marion County, West Virginia. The frontal address for the site is identified as 998 Minor Avenue, Fairmont, West Virginia. The site, currently occupied by Helmick Corporation, is currently being utilized as a machine shop for precise finishing of mine-machine-related parts. The majority of the site is utilized for storage or consists of vacant buildings. Only the office structure and a large machine shop are currently engaged in active operations. Historical document review and interviews confirm similar practices have been ongoing at the site since before 1912. Sometime prior to 1912 and until 1913, portions of the site have contained