City Heights CO and PM2.5 Data Analysis Report - Air Pollution ...

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BAM and EBAM data averages for the entire period from December 16, 2008, throughFebruary 3, 2009, are shown in Table 7.PM2.5 AveragesALP BAM DTN BAM ECA BAM ESC BAM CMP BAM CES EBAM WMS EBAMAverage 8.9 12.5 16.4 13.7* 10.8 14.4 12.9Table 7.PM2.5 (BAM and EBAM) averages for all hourly data collected fromDecember 16, 2008, through February 3, 2009. * The Escondido (ESC)average is biased downward since the BAM unit lost data for December 26 –29, 2008.The data plotted in Figure 17 show the hourly averaged data for Central Elementary Schooland Wilson Middle School for the entire project period. This graph shows that the twolocations are very similar in the early morning hours. During the late morning and earlyafternoon hours, Central Elementary School is at its lowest for the day, while Wilson MiddleSchool shows a small peak between 1000 and 1100 am PST. Since this is at a time when thewinds are normally from the west, it appears that there is a local source to the west of WilsonMiddle School – possibly on the school grounds themselves, since the particulates are notevident in the data from Central Elementary. In the evening hours, particulate levels atCentral Elementary School are consistently higher than Wilson Middle School. Withvariable winds at this time of night, this indicates that SR-15 is not the only contributor tothese higher concentrations.- 24 -
Central Elementary School and Wilson Middle School HourlyPM2.5 Averages: December 16, 2008 through February 4, 200935.030.0PM2.5 (µg/m3)25.020.015.010.0CES PM2.5WMS PM2.55.00.00 1 2 3 4 5 6 7 8 9 1011121314151617181920212223Hour (PST)Figure 17.Graph showing the hourly averaged EBAM PM2.5 concentrations for CentralElementary School and Wilson Middle School from December 16, 2008,through February 4, 2009.- 25 -
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Page 6: PROJECT DESCRIPTIONEarly in 2008, t
Page 11 and 12: Figure 3.Morning wind rose for mete
Page 13 and 14: Figure 5.Evening wind rose for mete
Page 15 and 16: Hourly CO Data for: Sunday, 1/18/20
Page 17 and 18: San Diego Hourly CO Data Averages b
Page 19 and 20: San Diego Hourly CO Data Averages b
Page 21 and 22: Hourly CO Data for: Thursday, 1/1/2
Page 23 and 24: TEP/CES CO Averages by Day of Week
Page 25 and 26: Central Elementary School: FRM vs.
Page 27: The District operates five BAM unit
Page 31 and 32: San Diego County FRM PM2.5 Data (In

City Heights CO and PM2.5 Data Analysis Report - Air Pollution ...

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