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I I I I I I I ,I I I I I I I I I I I I Addendum to Phase I Environmental Site Assessment for the DaleM Western Site in Roseville, Minnesota 1.0 INTRODUCTION The Dale-Western site includes approximately 90 acres..ofprimarily wooded, mostly undeveloped property. Two residential homes are located on the site, at 2800 Dale Street and 2939 Western A venue. The site location is shown on Figure 1 in the Appendix. The site layout is shown in Figure 2 in the Appendix. The site was bounded on the north/northwest by the Northern Pacific Railway and Owasso Boulevard South; on the east by Mackubin Street and Western Avenue; on the south by Centennial Drive and lona Lane; and on the west by Dale Street. The surrounding area is generally residential. A Phase I Environmental Site Assessment (ESA) was performed for the site in 1992 (STS Project 95524-XA dated September 1, 1992). The Phase I ESA indicated that part of the northeastern portion of the site was used for disposal of pavement sweepings by the City of Roseville. The pavement sweepings were disposed of within a fonner gravel pit area. Portions of the site were also reportedly used for disposal of school supplies, including desks and books. No written records regarding materials disposed of at the site were maintained by the City of Roseville or the Roseville School District. STS recommended that a series of test pits be excavated within the vicinity of the reported disposal area to determine the characteristics of the fill. Collection of soil samples for laboratory analysis was recommended within areas where potential soil contamination was observed. A Phase II ESA was perfonned in March 1994 (STS Project 95524-XA dated May 5, 1994). Two additional potential disposal areas were identified by Roseville School District personnel during the Phase II ESA. The disposal areas included a fonner greenhouse which was used for storage of