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Phase I Environmental Site Assessment Old Snelling Avenue & County Road E Improvements WSB Project No. 015447-000 Page 3 2. Introduction 2.1 Purpose WSB was retained by the City of Arden Hills (City) to conduct a Phase I Environmental Site Assessment (ESA) for the proposed Old Snelling Avenue & County Road E Improvements project located in Arden Hills, Minnesota (the Project Corridor). The objective of the assessment was to identify Recognized Environmental Conditions (RECs) associated with the Project Corridor according to ASTM E1527-13 “Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessments”. The ASTM E1527-13 Standard defines the term recognized environmental condition as meaning “the presence or likely presence of any hazardous substances or petroleum products in, on, or at a Project Corridor: (1) due to any release to the environment; (2) under conditions indicative of a release to the environment; or (3) under conditions that pose a material threat of a future release to the environment.” The term is not intended to include de minimis condition’s that generally do not present a threat to human health or the environment and that generally would not be the subject of an enforcement action if brought to the attention of appropriate governmental agencies. Conditions determined to be de minimis are not recognized environmental conditions. WSB understands that the City intends to utilize this assessment to determine the extent of potential soil and/or groundwater contamination prior to proceeding with design of street and utility improvements at the Project Corridor. Proposed street and/or utility improvements include roadway reconstruction, a single lane roundabout, multiple-use trail, and storm sewer, sanitary sewer, and water main replacements. It is understood that the work is planned during the 2022 construction season. 2.2 Scope of Services The Scope of Services performed by WSB is defined by the ASTM E1527-13 Standard and the methodologies and procedures described in the body of this report. The ASTM E1527-13 Standard is intended to permit a user to satisfy one of the requirements to qualify for the innocent landowner, contiguous Project Corridor owner, or bona fide prospective purchaser limitations of Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) liability, which is the practice that constitutes “all appropriate inquiry into previous ownership and uses of the Project Corridor with good commercial or customary practice” as defined in 42 U.S.C. 9601 (35) (B). 2.3 Assessment Limitations and Assumptions This Phase I ESA was performed in accordance with ASTM E1527-13 Standard Practice for Environmental Site Assessments. Snow was present during the site visit which limited direct ground observation. No conditions were encountered that were determined to be significantly limiting to the purpose of this assessment. The Scope of Services for this Phase I ESA did not include the completion of soil borings, the installation of groundwater monitoring wells, or the collection of soil, sediment, surface water, groundwater, or soil vapor samples. In addition, this assessment did not include collection or analysis of samples for the presence of asbestos, polychlorinated biphenyls (PCBs), lead-based paint, lead in drinking water, radon, or urea formaldehyde as this is beyond the scope of the ASTM E1527-13. 2.4 Special Terms and Conditions The findings and conclusions presented in this report are based on the general guidance provided by ASTM E1527-13, available data cited in this report, and Project Corridor conditions noted at the time of the site reconnaissance. A Phase I ESA cannot wholly eliminate the