NVI Technical College Information

New Village Institute Page 30

8.0

DATA GAPS

The following data gaps and/or data failures were identified during this review:

DATA GAP

SIGNIFICANCE

Inability to trace subject property use prior to 1940/first developed use (data failure) Gaps of more than 5 years between historical sources Regulatory records

The inability to trace the use of the subject property to its first developed use or 1940, whichever is earlier, represents data failure pursuant to ASTM E 1527-21. VERTEX researched available historical aerial photographs, Sanborn Fire Insurance Maps, topographic maps, city directories, and local agency records in an attempt to identify the historical use of the subject property. Based on the historical research conducted, this data failure is not significant in terms of our ability to identify RECs. Gaps of greater than 5 years were identified between historical sources. Based on the historical research conducted, this data gap is not significant in terms of our ability to identify RECs. VERTEX submitted a records request to the PADEP, which had not been responded to as of the date of this report. Based on current subject property use, history, and information presented prior ESA reports, this data gap is not significant in terms of our ability to identify RECs.

Significant data gaps that would affect VERTEX’s ability to identify RECs at the subject property were not encountered during this assessment. Deviations or deletions from the scope of work defined by ASTM E 1527-21 were not intentionally made. Our conclusions regarding the potential environmental impact of nearby, off-site facilities on the subject property are based on readily available information from the environmental databases and the assumed groundwater flow direction as inferred from the topography of the subject property and surrounding area. VERTEX did not review regulatory files for the off-site regulatory database listings because the files were not considered likely to alter the conclusions of this report.