Laserfiche WebLink
MacArthur Project Modification --- Santa Ana - Air Quality Assessment <br />KPC Environmental, Inc. <br />The following table contains the most recently released air quality monitoring data for the <br />area closest to the project site according to the SCAQMD SRA /City Table. The <br />monitoring site selected for this area includes the data from station #17 which is located <br />in the Central Orange County. <br />The most recent data (2008) from the air quality monitoring station SRA #17 indicates <br />there were 4 days on which the current Federal 8 -hour ozone standards were exceeded <br />and the current State 8 -hour standard was exceeded a total of 10 -days. Monitoring for <br />PM10 and PM2.5 at SRA #17 indicates no exceedances of PM10 for the Federal 24 -hour <br />standard and 3- exceedances for the State 24 -hour standard. PM2.5 exceeded the current <br />Federal standard a total of 13 days during 2008. CO concentrations in the area did not <br />exceed federal or state standards. <br />Table 4 -3 Regional Air Quality Summary <br />Source Receptor Area 24 Years 2000 - 2008 <br />ppm -Parts Per Million AAM - Annual Arithmetic Mean - -- Pollutant Not Monitored <br />(a) The federal standard is annual arithmetic mean N)2 greater than 0.0534 ppm. <br />{b} The state standards are 1 -hour average 502 > 0.03 ppm, 24 -hour average > 0.04 ppm, and 3 -hour average > 0.05 ppm. <br />The federal standards are annual arithmetic mean 502 > 0.03 ppm, 24 -hour average > 0.14 ppm, and 3 -hour average > <br />0.50 ppm. <br />{c} Less than 1 2- months of data available. <br />(d) Revised Federal standard for PM2.5 from 65 down to 35 uglm3 effective December 17, 2006. <br />o2 /02 /11 8 <br />Number of <br />Maximum <br />Days samples <br />Pollutant <br />Califomia <br />Federal <br />Year <br />Measured <br />exceed <br />Standard <br />Standard <br />Concentration <br />Federal/State <br />Standards <br />Carbon Monoxide <br />9.0 ppm <br />9.5 ppm <br />2006 <br />3.0 <br />010 <br />8 -hour <br />8 -hour <br />2007 <br />2.9 <br />010 <br />2008 <br />3.6 <br />010 <br />Ozone <br />0.09 ppm <br />0.12 ppm <br />2006 <br />0.11 <br />015 <br />1 -hour <br />1 -hour <br />2007 <br />0.127 <br />112 <br />2008 <br />0.105 <br />012 <br />Nitrogen Dioxide <br />0.25 ppm <br />0.0534 ppm <br />2006 <br />0.11 <br />010 <br />(NO2) <br />1 -hour <br />AAM (a) <br />2007 <br />0.10 <br />010 <br />2008 <br />0.09 <br />010 <br />Sulfur Dioxide <br />0.25 ppm <br />0.03 ppm <br />2006 <br />-- <br />010 <br />(S02) <br />1 -hour <br />AAM <br />2007 <br />-- <br />010 <br />0.04 ppm <br />0.14 ppm <br />2008 <br />-- <br />010 <br />24 -h our avg. <br />24 -hour avg. <br />(b) <br />0.50 ppm <br />3 -hour avg. b <br />Fine Particulate <br />50 uglm3 <br />150 uglm3 <br />2006 <br />104 <br />017 <br />Matter (PM-10) <br />24 -hour <br />24 -hour <br />2007 <br />75 <br />015 <br />2008 <br />61 <br />013 <br />Fine Particulate <br />65 uglm3 {d) <br />2006 <br />56.2 <br />810 <br />Matter (PM-2.5) <br />35 ug1m3 <br />2007 <br />79.4 <br />1410 <br />24 -hour <br />2008 1 <br />67.9 <br />1310 <br />ppm -Parts Per Million AAM - Annual Arithmetic Mean - -- Pollutant Not Monitored <br />(a) The federal standard is annual arithmetic mean N)2 greater than 0.0534 ppm. <br />{b} The state standards are 1 -hour average 502 > 0.03 ppm, 24 -hour average > 0.04 ppm, and 3 -hour average > 0.05 ppm. <br />The federal standards are annual arithmetic mean 502 > 0.03 ppm, 24 -hour average > 0.14 ppm, and 3 -hour average > <br />0.50 ppm. <br />{c} Less than 1 2- months of data available. <br />(d) Revised Federal standard for PM2.5 from 65 down to 35 uglm3 effective December 17, 2006. <br />o2 /02 /11 8 <br />