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

T.F. Green Airport Improvement ProgramEnvironmental Impact Statement and Final Section 4(f) EvaluationTable 4-25Permanent RIDEM Air Monitors—Data Summary 2005 through 2008 1,2,3 (continued)Pollutant Year Averaging Time NAAQS Highest Measured Value Exceeds NAAQSSite No. 5 / EPA Laboratory, Narragansett / 16 miles south of T.F. Green AirportO 3 2007 8-hour 0.08 ppm 0.085 ppm Yes 62006 8-hour 0.08 ppm 0.086 ppm Yes 62005 8-hour 0.08 ppm 0.089 ppm Yes 62007 8-hour 0.08 ppm 0.085 ppm Yes 6Source: EPA, 2009 www.epa.gov/air/data/geosel.html, compiled by KB Environmental Sciences, Inc.; and RIDEM, 2010. Source: EPA, 2009.NAAQS National Ambient Air Quality Standards.µg/m 3 micrograms per cubic meter.ppm parts per million.PM10 particulate matter less than 10 micrometers in diameter.PM2.5 particulate matter less than 2.5 micrometers in diameter.CO carbon monoxide.SO2 sulfur dioxide.NO2 nitrogen dioxide.O3 ozone.N/A Not available.Notes: See Figure 4-18 for the locations of the monitoring stations.Additional pollutants other than those identified in this table are also measured at the RIDEM air monitoring stations. Only those pollutants that are measuredclosest to T.F. Green Airport are reported here. A more complete summary can be obtained at www.dem.ri.gov/topics/air.htm.Lead (Pb) is not reported as RIDEM discontinued monitoring of this EPA criteria air pollutant in 1992 as the levels were consistently below the NAAQS.1 Years 2005 through 2008 are the four most current years for which data is presently available.2 Presently, there are eight permanent air monitoring stations in Rhode Island that are operated by RIDEM. The five stations reported in this table were selectedbecause they are closest to T.F. Green Airport.3 The reported values include annual average values for PM2.5, SO2, and NO2, including the average for the maximum three-year period for PM2.5 . The reportedvalues for 24-hour PM10 is the fourth highest value for the three-year period ending in that year, for 24-hour PM2.5 is the 98 th percentile value for that year, for1- and 8-hour CO and 3- and 24-hour SO2 is the second maximum value for that year, and for 8-hour O3 is the average of the fourth maximum values each yearfor the three-year period ending in that year.4 The NAAQS are compared to a three year average, not individual years.5 The Dorrance Street monitor stopped recording CO and SO2 data beginning midway through 2007.6 Measured values at the Francis School, East Providence monitor exceeded the NAAQS for O3 11 times in 2007 based on the 8-hour ozone NAAQS (0.075 ppm).The next closest O3 monitor to T.F. Green Airport is the Narragansett site located approximately 16 miles to the south. Violations of the NAAQS have alsooccurred at this station indicating that elevated O3 levels occur regionally and are not confined to Warwick or the Airport area.As shown in Table 4-25, the most recent air monitoring data collected by RIDEM in the Providence area arewithin the NAAQS for all of the criteria pollutants, again with the exception of O 3. Ozone levels at theFrancis School station, northeast of downtown Providence, exceeded the 1997 eight-hour NAAQS for thispollutant several times in 2007 and 2008. Violations have also occurred at the Narragansett site in southeasternRhode Island indicating that elevated O 3levels are regional occurrences that extend throughout the state,including Warwick and the area around T.F. Green Airport.RIDEM Air Quality StudyIn partnership with the City of Warwick, RIDEM completed a year-long air monitoring study in the vicinity ofT.F. Green Airport in 2005. The data were collected at four sites on (or adjacent to) the Airport and in the neighboringcommunity and then compared to similar data collected away from the Airport in Providence, East Providence,Pawtucket and West Greenwich. The list of pollutants measured comprises 78 different compounds that areclassifiable as HAPs, total black carbon, and PM 2.5. The results 197 are summarized as follows:• PM 2.5levels were within NAAQS.197 The results are available on the RIDEM website at: www.dem.ri.gov/programs/benviron/air/slides/tfgreen_files/frame.htm.Chapter 4 – Affected Environment 4-42 July 2011\\mawatr\ev\09228.00\reports\FEIS_Final_July_2011\PVD_CH04_Affected_Env_JUL_2011.doc