T.F. Green Airport Improvement Program - FEIS Chapters - PVD

T.F. Green Airport Improvement ProgramEnvironmental Impact Statement and Final Section 4(f) EvaluationContaminated materials and potential sources of contamination encountered would be removed duringconstruction, positively affecting the environment. Beneficial impacts would include addressing contaminationin accordance with RIDEM Rules and Regulations for the Investigation and Remediation of Hazardous MaterialReleases for the investigation and remediation of hazardous material releases.The ongoing monitoring and remediation of known releases could be indirectly impacted. The movement ortemporary shut-down of an active remediation system would impact the remediation rate of the contaminationand could interfere with monitoring. The data collected after monitoring well replacement may not be directlycomparable to previously collected data because it is difficult to identically recreate a groundwater monitoringwell due to different subsurface conditions or contaminant distribution.The potential impact caused by temporary shutdown of an active remediation system was estimated bydetermining whether an existing release currently undergoing active remediation or monitoring lies within thelimit of disturbance or potential property acquisition for Alternatives B2 and B4. A review of federal, state, andproprietary environmental databases was conducted to identify properties in the vicinity of the Project Area thathave had a release of oil and/or hazardous materials (OHM). A review of RIDEM files provided informationregarding the type of release, specific location of soil or groundwater impacts, magnitude of the identified impacts,and the most recent status of any monitoring or remediation activities for each of the releases.5.17.3.3 Cumulative Impacts MethodologyPast, current, and future actions and impacts related to hazardous materials, pollution prevention, and solidwaste management are accounted for as part of the cumulative impacts analysis. The affected environmentanalysis includes a complete assessment of all known hazardous materials within the Study Area (refer toChapter 4, Affected Environment). Current practices at T.F. Green related to ongoing remediation on-Airport andwaste management is also considered under cumulative impacts. Potential impacts of Alternatives B2 and B4are assessed as part of the FEIS impact assessment.5.17.4 Impact AssessmentSeveral potential sources of soil or groundwater contamination are present within or adjacent to the ProjectArea. Construction activities for Alternatives B2 and B4 may encounter contaminated soils, groundwater, orsurface water, or may generate regulated and hazardous wastes. This section summarizes the potential impactswith respect to hazardous materials, solid waste and pollution prevention for Alternatives B2 and B4, and theNo-Action Alternative.5.17.4.1 No-Action AlternativeIn early 2010, RIAC continued the Part 150 NCP (referred to as the Current Part 150 VLAP). Under the 2020No-Action Alternative, it is assumed that up to 115 residential parcels (59 parcels at the Runway 5 End and56 parcels at the Runway 23 End) would be eligible for voluntary acquisition (Figure 5-49). This would generatedebris, such as ACM, lead based paint (LBP) impacted demolition debris, and solid waste, which would bedemolished and disposed of appropriately. No registered USTs are located within the Current Part 150 VLAPareas (Figure 5-49). There is a minor chance that new releases would be encountered or created during theNo-Action Alternative construction or demolition activities. However, this risk is low because the amount ofconstruction planned under the No-Action Alternative is limited.Chapter 5 - Environmental Consequences 5-263 July 2011\\mawatr\ev\09228.00\reports\FEIS_Final_July_2011\PVD_CH05_Environmental_Cons_JUL_2011.doc