## San Joaquin Valley and practicability of attaining the 2006 24-hour PM2.5 NAAQS by the end of 2015

EPA Region 9, 2014-12-15

**Sheet** 24-hr practicability 2014 data 2003-2013 24-hr DVs p98_ranks

## San Joaquin Valley and practicability of attaining the 2006 24-hour PM2.5 NAAQS by the end of 2015

**Description** Practicability of attaining 24-hr PM2.5 NAAQS 2014 daily PM.5 data for selected sites from AQS Valid 24-hour PM2.5 design values for 2003-2013 look-up table for 98th percentile rank given number of samples, Table 1, 40 CFR 50 App. N

## Practicability of attaining 2006 24-hour PM2.5 NAAQS by end of 2015

2015 attainment of 2006 NAAQS

Site Name Site ID 2013 98% Total Est. # samples in 2014 Rank of day

to use for 98th percentile Estimated

2014 98th percentile Max 2015 98th

percentile allowed to attain 2006 24-hr NAAQS (35.4) in 2015 2006 NAAQS attainment practicable in 2015? Fresno-Garland 11 63.8 328 7 65.5 -23.1 No Bakersfield-California Ave 14 71.8 336 7 72.6 -38.2 No Bakersfield-Planz 16 96.7 108 3 64.4 -54.9 No Hanford 1004 67.6 328 7 76.7 -38.1 No Fresno-Pacific 5025 71.6 120 3 61.8 -27.2 No

**Alternative analysis assuming at least 351 valid samples could somehow be collected at each site during all of 2014 (use 8th rank of available data) Concentrations would have to be less than zero in order for attainment of the 2006 24-hr NAAQS to be possible by the end** 

Estimated 2014 98th percentile selected from data in AQS as of Aug. 7, 2014 (see AQS Data Query: 2014-08-07) and assumes 2014 will have no higher values than those already in AQS as of Aug. 7, 2014.

Practicability of attainment in 2015 is from comparing max 2015 98th percentile allowed (for attaining the 2006 24-hour NAAQS) to zero. A negative max 2015 98th %ile allowed means 2006 NAAQS attainment by the end of 2015 is not possible. Total Estimated # of samples in 2014 assumes sampling rate seen in 2014 AQS data so far (see AQS Data Query: 2014-08-07) will continue throughout 2014. For example, with one quarter's worth of data in AQS, the Fresno-Garland site collected 82 valid samples. EPA assumed that 82 samples would also be collected in quarters two through four to come up with a total estimated sample count of 328 for 2014. 2013 98th percentiles from U.S. EPA, 2013 Design Value Reports, PM2.5 Detailed Information Updated 8/24/14, available at http://www.epa.gov/airtrends/values.html (“PM25_DesignValues_20112013_FINAL_08_28_14”)Site Name Site ID 2013 98% Min # samples to select 8th rank Rank of day

to use for 98th percentile Estimated

2014 98th percentile Max 2015 98th

percentile allowed to attain 2006 24-hr NAAQS (35.4) in 2015 2006 NAAQS attainment practicable in 2015? Fresno-Garland 11 63.8 351 **8** 63.5 -21.1 No Bakersfield-California Ave 14 71.8 351 **8** 70.4 -36.0 No Bakersfield-Planz 16 96.7 351 **8** 32.2 -22.7 No Hanford 1004 67.6 351 **8** 72.3 -33.7 No Fresno-Pacific 5025 71.6 351 **8** 31.7 2.9

Even under the unrealisically liberal assumption that at least 351 valid samples could somehow be collected at each site during all of 2014, allowing the use of the 8 th rank as 98th percentile, concentrations for multiple sites would have to be less than zero in order for attainment of the 2006 24-hr NAAQS to be possible by the end of 2015.STATE_

CODE COUNTY _CODE SITE_ID PRIM

ARY_ MONI TOR_P OC MONITOR _TYPE SAMPLE_D

ATE VALUE 

## AQS data for selected SJV sites for PM2.5 2014

6 19 5025 1SLAMS 20140102 61.8

6 19 5025 1SLAMS 20140105 74.5 **Site Name Site ID**  6 19 5025 1SLAMS 20140108 51.5 Fresno-Garland 11 6 19 5025 1SLAMS 20140111 31.6 CA Ave 14 6 19 5025 1SLAMS 20140114 30.4 Planz 16 6 19 5025 1SLAMS 20140117 57.7 Hanford 1004 6 19 5025 1SLAMS 20140120 63.5 Fresno-Pacific 5025 6 19 5025 1SLAMS 20140123 53.5 6 19 5025 1SLAMS 20140126 31.9 AQS Data Query: 2014-08-07 (AQS Combined site values report, AMP355) 6 19 5025 1SLAMS 20140129 31.7 (see 2014 SJV PM2.5 Combined site values report 20140807.pdf) 6 19 5025 1SLAMS 20140201 27 6 19 5025 1SLAMS 20140204 14 6 19 5025 1SLAMS 20140207 10 6 19 5025 1SLAMS 20140210 7.1 6 19 5025 1SLAMS 20140213 25.1 6 19 5025 1SLAMS 20140216 8.1 6 19 5025 1SLAMS 20140219 8.3 6 19 5025 1SLAMS 20140222 22.9 6 19 5025 1SLAMS 20140225 25.2 6 19 5025 1SLAMS 20140228 1 6 19 5025 1SLAMS 20140303 6.7 6 19 5025 1SLAMS 20140306 12.8 6 19 5025 1SLAMS 20140309 11.5 6 19 5025 1SLAMS 20140312 6 6 19 5025 1SLAMS 20140315 11.3 6 19 5025 1SLAMS 20140318 3.6 6 19 5025 1SLAMS 20140321 8.3 6 19 5025 1SLAMS 20140324 9.3 6 19 5025 1SLAMS 20140327 3.8 6 19 5025 1SLAMS 20140330 3.5 6 29 14 1SLAMS 20140101 84.3 6 29 14 1SLAMS 20140102 75.4 6 29 14 1SLAMS 20140103 78.1 6 29 14 1SLAMS 20140104 73.1 6 29 14 1SLAMS 20140105 72.6 6 29 14 1SLAMS 20140106 80.5 6 29 14 1SLAMS 20140107 70.4 6 29 14 1SLAMS 20140108 61.1 6 29 14 1SLAMS 20140109 45.1 6 29 14 1SLAMS 20140110 266 29 14 1SLAMS 20140111 26

6 29 14 1SLAMS 20140112 27.6 6 29 14 1SLAMS 20140113 25.3 6 29 14 1SLAMS 20140114 36.5 6 29 14 1SLAMS 20140115 50.9 6 29 14 1SLAMS 20140116 54.6 6 29 14 1SLAMS 20140117 58.7 6 29 14 1SLAMS 20140118 59.1 6 29 14 1SLAMS 20140119 66.4 6 29 14 1SLAMS 20140120 63.2 6 29 14 1SLAMS 20140121 81.3 6 29 14 1SLAMS 20140122 70.1 6 29 14 1SLAMS 20140123 30.3 6 29 14 1SLAMS 20140124 8.3 6 29 14 1SLAMS 20140125 23.3 6 29 14 1SLAMS 20140126 28.5 6 29 14 1SLAMS 20140127 38.7 6 29 14 1SLAMS 20140128 43 6 29 14 1SLAMS 20140129 39 6 29 14 1SLAMS 20140131 12 6 29 14 1SLAMS 20140201 16.3 6 29 14 1SLAMS 20140202 11.3 6 29 14 1SLAMS 20140203 12.2 6 29 14 1SLAMS 20140204 15.5 6 29 14 1SLAMS 20140205 24.5 6 29 14 1SLAMS 20140206 18.4 6 29 14 1SLAMS 20140207 11.6 6 29 14 1SLAMS 20140210 8.1 6 29 14 1SLAMS 20140213 29.9 6 29 14 1SLAMS 20140214 26.3 6 29 14 1SLAMS 20140215 39.6 6 29 14 1SLAMS 20140216 27.4 6 29 14 1SLAMS 20140217 13.9 6 29 14 1SLAMS 20140218 12.4 6 29 14 1SLAMS 20140219 14.8 6 29 14 1SLAMS 20140220 9 6 29 14 1SLAMS 20140221 16 6 29 14 1SLAMS 20140222 20.9 6 29 14 1SLAMS 20140223 19.5 6 29 14 1SLAMS 20140224 23.8 6 29 14 1SLAMS 20140225 17.3 6 29 14 1SLAMS 20140226 11.9 6 29 14 1SLAMS 20140227 5 6 29 14 1SLAMS 20140228 4.9 6 29 14 1SLAMS 20140301 2.4 6 29 14 1SLAMS 20140302 3.5 6 29 14 1SLAMS 20140303 9.76 29 14 1SLAMS 20140304 17.6

6 29 14 1SLAMS 20140305 21.9 6 29 14 1SLAMS 20140306 21.2 6 29 14 1SLAMS 20140307 10.3 6 29 14 1SLAMS 20140308 14.1 6 29 14 1SLAMS 20140309 11.7 6 29 14 1SLAMS 20140310 11.2 6 29 14 1SLAMS 20140312 7.7 6 29 14 1SLAMS 20140313 7.8 6 29 14 1SLAMS 20140314 7.9 6 29 14 1SLAMS 20140315 10.5 6 29 14 1SLAMS 20140316 13 6 29 14 1SLAMS 20140317 7.6 6 29 14 1SLAMS 20140318 6.1 6 29 14 1SLAMS 20140319 8.4 6 29 14 1SLAMS 20140320 11 6 29 14 1SLAMS 20140321 11.3 6 29 14 1SLAMS 20140322 10 6 29 14 1SLAMS 20140323 10.3 6 29 14 1SLAMS 20140324 12.5 6 29 14 1SLAMS 20140325 13.2 6 29 14 1SLAMS 20140326 3.1 6 29 14 1SLAMS 20140327 4.7 6 29 14 1SLAMS 20140328 9 6 29 14 1SLAMS 20140329 10 6 29 14 1SLAMS 20140330 4.1 6 29 14 1SLAMS 20140331 5.9 6 29 16 1SLAMS 20140102 76.7 6 29 16 1SLAMS 20140105 69.5 6 29 16 1SLAMS 20140108 58.4 6 29 16 1SLAMS 20140111 26.3 6 29 16 1SLAMS 20140114 31 6 29 16 1SLAMS 20140117 64.4 6 29 16 1SLAMS 20140120 60.4 6 29 16 1SLAMS 20140123 49.7 6 29 16 1SLAMS 20140126 32.2 6 29 16 1SLAMS 20140129 40.8 6 29 16 1SLAMS 20140201 17.8 6 29 16 1SLAMS 20140208 7.8 6 29 16 1SLAMS 20140210 12.4 6 29 16 1SLAMS 20140211 10.1 6 29 16 1SLAMS 20140216 30.9 6 29 16 1SLAMS 20140219 17.8 6 29 16 1SLAMS 20140222 23.6 6 29 16 1SLAMS 20140225 21 6 29 16 1SLAMS 20140228 19.8 6 29 16 1SLAMS 20140305 27.86 29 16 1SLAMS 20140306 25.4

6 29 16 1SLAMS 20140307 10.3 6 29 16 1SLAMS 20140313 11.6 6 29 16 1SLAMS 20140315 17.1 6 29 16 1SLAMS 20140316 14.5 6 29 16 1SLAMS 20140318 8.5 6 29 16 1SLAMS 20140324 16.5 6 31 1004 3SPM 20140101 96.7 6 31 1004 3SPM 20140102 81.9 6 31 1004 3SPM 20140103 80.7 6 31 1004 3SPM 20140104 82.3 6 31 1004 3SPM 20140105 70.2 6 31 1004 3SPM 20140106 69.4 6 31 1004 3SPM 20140107 80.7 6 31 1004 3SPM 20140108 54 6 31 1004 3SPM 20140109 24.2 6 31 1004 3SPM 20140110 29.1 6 31 1004 3SPM 20140111 31.9 6 31 1004 3SPM 20140112 14.3 6 31 1004 3SPM 20140113 19.3 6 31 1004 3SPM 20140114 23.5 6 31 1004 3SPM 20140115 41.4 6 31 1004 3SPM 20140116 50.9 6 31 1004 3SPM 20140117 62.2 6 31 1004 3SPM 20140118 63.9 6 31 1004 3SPM 20140119 77.8 6 31 1004 3SPM 20140120 72.3 6 31 1004 3SPM 20140121 63.2 6 31 1004 3SPM 20140122 76.7 6 31 1004 3SPM 20140123 54.6 6 31 1004 3SPM 20140124 36.2 6 31 1004 3SPM 20140125 34 6 31 1004 3SPM 20140126 31.7 6 31 1004 3SPM 20140127 34.7 6 31 1004 3SPM 20140128 33.5 6 31 1004 3SPM 20140129 36.5 6 31 1004 3SPM 20140130 22.1 6 31 1004 3SPM 20140131 6.2 6 31 1004 3SPM 20140201 20.5 6 31 1004 3SPM 20140202 13.7 6 31 1004 3SPM 20140203 7.4 6 31 1004 3SPM 20140204 10.7 6 31 1004 3SPM 20140205 15.1 6 31 1004 3SPM 20140206 16.3 6 31 1004 3SPM 20140207 11.7 6 31 1004 3SPM 20140208 11.6 6 31 1004 3SPM 20140209 6.56 31 1004 3SPM 20140210 6

6 31 1004 3SPM 20140211 12.2 6 31 1004 3SPM 20140212 17.4 6 31 1004 3SPM 20140213 24.2 6 31 1004 3SPM 20140214 34.5 6 31 1004 3SPM 20140215 57.4 6 31 1004 3SPM 20140216 7.3 6 31 1004 3SPM 20140217 4.6 6 31 1004 3SPM 20140218 7.6 6 31 1004 3SPM 20140219 6.3 6 31 1004 3SPM 20140220 7.5 6 31 1004 3SPM 20140221 20 6 31 1004 3SPM 20140222 19.7 6 31 1004 3SPM 20140223 17.5 6 31 1004 3SPM 20140224 21.2 6 31 1004 3SPM 20140225 22.2 6 31 1004 3SPM 20140226 5.1 6 31 1004 3SPM 20140227 2.1 6 31 1004 3SPM 20140301 -0.4 6 31 1004 3SPM 20140302 3.5 6 31 1004 3SPM 20140314 14 6 31 1004 3SPM 20140315 16.5 6 31 1004 3SPM 20140316 23.7 6 31 1004 3SPM 20140317 8 6 31 1004 3SPM 20140318 5.9 6 31 1004 3SPM 20140319 10 6 31 1004 3SPM 20140320 15.2 6 31 1004 3SPM 20140321 12.9 6 31 1004 3SPM 20140322 12.4 6 31 1004 3SPM 20140323 11.7 6 31 1004 3SPM 20140324 12.8 6 31 1004 3SPM 20140325 13 6 31 1004 3SPM 20140326 7.6 6 31 1004 3SPM 20140327 7.7 6 31 1004 3SPM 20140328 14.5 6 31 1004 3SPM 20140329 16 6 31 1004 3SPM 20140330 6.9 6 31 1004 3SPM 20140331 6.7 6 31 1004 3SPM 20140401 5.1 6 31 1004 3SPM 20140402 4.9 6 31 1004 3SPM 20140408 22.6 6 31 1004 3SPM 20140409 17.5 6 31 1004 3SPM 20140410 22.7 6 31 1004 3SPM 20140411 14.6 6 31 1004 3SPM 20140412 12.4 6 31 1004 3SPM 20140413 13 6 31 1004 3SPM 20140414 15.36 31 1004 3SPM 20140415 14.4

6 31 1004 3SPM 20140416 14.8 6 31 1004 3SPM 20140417 10.9 6 31 1004 3SPM 20140418 10.4 6 31 1004 3SPM 20140419 10.4 6 31 1004 3SPM 20140420 8.8 6 31 1004 3SPM 20140421 15 6 31 1004 3SPM 20140422 7.7 6 31 1004 3SPM 20140423 6.3 6 31 1004 3SPM 20140424 7.2 6 31 1004 3SPM 20140425 6.6 6 31 1004 3SPM 20140426 5.7 6 31 1004 3SPM 20140427 5.8 6 31 1004 3SPM 20140428 11.4 6 31 1004 3SPM 20140429 13.7 6 31 1004 3SPM 20140430 20 6 31 1004 3SPM 20140501 15.3 6 31 1004 3SPM 20140502 13.2 6 31 1004 3SPM 20140503 8.6 6 31 1004 3SPM 20140504 7.2 6 31 1004 3SPM 20140505 7.8 6 31 1004 3SPM 20140506 8.2 6 31 1004 3SPM 20140507 11.2 6 31 1004 3SPM 20140508 9.4 6 31 1004 3SPM 20140509 3.8 6 31 1004 3SPM 20140510 6.2 6 31 1004 3SPM 20140511 3.7 6 31 1004 3SPM 20140512 7.8 6 31 1004 3SPM 20140513 10.6 6 31 1004 3SPM 20140514 10.7 6 31 1004 3SPM 20140515 14.3 6 31 1004 3SPM 20140516 12.5 6 31 1004 3SPM 20140517 6.3 6 31 1004 3SPM 20140518 3.2 6 31 1004 3SPM 20140519 4.8 6 31 1004 3SPM 20140520 2.3 6 31 1004 3SPM 20140521 8 6 31 1004 3SPM 20140522 10.7 6 31 1004 3SPM 20140523 10.7 6 31 1004 3SPM 20140524 7.6 6 31 1004 3SPM 20140525 8.6 6 31 1004 3SPM 20140526 6 6 31 1004 3SPM 20140527 4.3 6 31 1004 3SPM 20140528 7.5 6 31 1004 3SPM 20140529 5.5 6 31 1004 3SPM 20140530 7 6 31 1004 3SPM 20140531 10.46 31 1004 3SPM 20140601 11.6

6 31 1004 3SPM 20140602 7.9 6 31 1004 3SPM 20140603 8 6 31 1004 3SPM 20140604 9.2 6 31 1004 3SPM 20140605 9.5 6 31 1004 3SPM 20140606 9.8 6 31 1004 3SPM 20140607 14 6 31 1004 3SPM 20140608 13.6 6 31 1004 3SPM 20140609 14 6 31 1004 3SPM 20140610 13.8 6 31 1004 3SPM 20140611 19.2 6 31 1004 3SPM 20140612 10 6 31 1004 3SPM 20140613 3.7 6 31 1004 3SPM 20140614 6.7 6 31 1004 3SPM 20140615 5.5 6 31 1004 3SPM 20140616 8.5 6 31 1004 3SPM 20140617 6.2 6 31 1004 3SPM 20140618 7.8 6 31 1004 3SPM 20140619 6.8 6 31 1004 3SPM 20140620 7.6 6 31 1004 3SPM 20140621 3.8 6 31 1004 3SPM 20140622 5.5 6 31 1004 3SPM 20140623 9.2 6 31 1004 3SPM 20140624 7 6 31 1004 3SPM 20140625 5.6 6 31 1004 3SPM 20140626 3.8 6 31 1004 3SPM 20140627 4.6 6 31 1004 3SPM 20140628 4.4 6 31 1004 3SPM 20140629 5.1 6 31 1004 3SPM 20140630 11.4 6 19 11 1SLAMS 20140101 94.6 6 19 11 1SLAMS 20140102 70.6 6 19 11 1SLAMS 20140103 82 6 19 11 1SLAMS 20140104 76.4 6 19 11 1SLAMS 20140105 71.5 6 19 11 1SLAMS 20140106 59.7 6 19 11 1SLAMS 20140107 56 6 19 11 1SLAMS 20140108 52.7 6 19 11 1SLAMS 20140110 49.6 6 19 11 1SLAMS 20140111 36.6 6 19 11 1SLAMS 20140112 26 6 19 11 1SLAMS 20140113 36.1 6 19 11 1SLAMS 20140114 36.8 6 19 11 1SLAMS 20140115 39.3 6 19 11 1SLAMS 20140116 50.9 6 19 11 1SLAMS 20140117 60.5 6 19 11 1SLAMS 20140118 59.96 19 11 1SLAMS 20140119 63.5

6 19 11 1SLAMS 20140120 65.5 6 19 11 1SLAMS 20140121 51.8 6 19 11 1SLAMS 20140122 66.7 6 19 11 1SLAMS 20140123 55.9 6 19 11 1SLAMS 20140124 28.8 6 19 11 1SLAMS 20140125 26.2 6 19 11 1SLAMS 20140126 28.9 6 19 11 1SLAMS 20140127 33.2 6 19 11 1SLAMS 20140128 31.8 6 19 11 1SLAMS 20140129 30.8 6 19 11 1SLAMS 20140131 8.7 6 19 11 1SLAMS 20140204 14.3 6 19 11 1SLAMS 20140205 23.2 6 19 11 1SLAMS 20140206 15.8 6 19 11 1SLAMS 20140207 9.7 6 19 11 1SLAMS 20140208 7.9 6 19 11 1SLAMS 20140209 6 6 19 11 1SLAMS 20140210 6.3 6 19 11 1SLAMS 20140211 14.3 6 19 11 1SLAMS 20140212 23.2 6 19 11 1SLAMS 20140213 25.1 6 19 11 1SLAMS 20140214 43.3 6 19 11 1SLAMS 20140215 46.8 6 19 11 1SLAMS 20140216 9.9 6 19 11 1SLAMS 20140217 6.5 6 19 11 1SLAMS 20140218 16.5 6 19 11 1SLAMS 20140219 9 6 19 11 1SLAMS 20140220 12.3 6 19 11 1SLAMS 20140221 22.5 6 19 11 1SLAMS 20140222 24.2 6 19 11 1SLAMS 20140223 20.7 6 19 11 1SLAMS 20140225 23.2 6 19 11 1SLAMS 20140226 13.1 6 19 11 1SLAMS 20140227 4.7 6 19 11 1SLAMS 20140228 2.2 6 19 11 1SLAMS 20140301 2.8 6 19 11 1SLAMS 20140302 4.7 6 19 11 1SLAMS 20140303 6.2 6 19 11 1SLAMS 20140304 3.5 6 19 11 1SLAMS 20140305 12.6 6 19 11 1SLAMS 20140306 12.8 6 19 11 1SLAMS 20140307 11.1 6 19 11 1SLAMS 20140308 13.8 6 19 11 1SLAMS 20140309 12 6 19 11 1SLAMS 20140310 4.9 6 19 11 1SLAMS 20140311 4.16 19 11 1SLAMS 20140312 5.7

6 19 11 1SLAMS 20140314 6.3 6 19 11 1SLAMS 20140315 12.7 6 19 11 1SLAMS 20140316 11.9 6 19 11 1SLAMS 20140317 4.1 6 19 11 1SLAMS 20140318 4.1 6 19 11 1SLAMS 20140320 6.9 6 19 11 1SLAMS 20140321 9 6 19 11 1SLAMS 20140322 9.9 6 19 11 1SLAMS 20140323 8.6 6 19 11 1SLAMS 20140324 9.7 6 19 11 1SLAMS 20140325 7.5 6 19 11 1SLAMS 20140326 3.7 6 19 11 1SLAMS 20140327 4.9 6 19 11 1SLAMS 20140328 7 6 19 11 1SLAMS 20140329 6.6 6 19 11 1SLAMS 20140330 4.3 6 19 11 1SLAMS 20140331 4.5

## AQS data for selected SJV sites for PM2.5 2014

**Count of SAMPLES in**  **AQS** Quarters

in AQS Estimated

# samples rank for

98th percentile 82 1 328 7 84 1 336 7 27 1 108 3 164 2 328 7 30 1 120 3

AQS Data Query: 2014-08-07 (AQS Combined site values report, AMP355) (see 2014 SJV PM2.5 Combined site values report 20140807.pdf)

## Table showing ONLY valid 24-hour PM2.5 Site Design Value History, 2001-2003 through 2011-2013

**local_site_name AQS ID**  **County 2003**  **2004 2005**  **2006 2007**  **2008 2009**  **2010 2011**  **2012 2013**  SouthNorth BAKERSFIELD - SOUTHEAST (PLANZ) 60290016 Kern 68 54 54 60 68 70 70 65 55 47 60 1 Bakersfield-California Avenue 60290014 Kern 72 61 58 62 66 66 68 62 62 58 65 2 Bakersfield-Golden State Hwy 60290010 Kern 76 62 60 64 69 64 66 64 65 3 Corcoran 60310004 Kings 66 52 55 58 61 52 53 49 46 43 4 Hanford 60311004 Kings 54 60 5 Visalia - N. Church 61072002 Tulare 71 57 55 56 58 57 59 51 47 47 56 6 FRESNO-Pacific College 60195025 Fresno 61 57 57 59 61 52 50 43 48 53 63 7 Fresno - Garland 60190011 Fresno 69 61 60 58 63 58 60 54 58 59 62 8 Clovis 60195001 Fresno 58 51 55 56 58 54 53 47 54 54 58 9 Tranquillity 60192009 Fresno 31 30 10 Madera-City 60392010 Madera 51 52 11 2334 'M' ST. 60472510 Merced 50 47 45 45 48 50 51 45 39 40 49 12 Merced-Coffee 60470003 Merced 43 41 42 13 Turlock 60990006 Stanislaus 55 51 49 53 14 Modesto-14th Street 60990005 Stanislaus 62 54 49 51 55 54 55 49 50 44 51 15 Manteca 60772010 San Joaquin 38 37 16 HAZELTON-HD, STOCKTON 60771002 San Joaquin 50 42 40 41 45 51 50 44 38 36 45 17 1997 PM2.5 24-hour NAAQS 65 65 65 65 65 65 65 65 65 65 65 2006 PM2.5 24-hour NAAQS 35 35 35 35 35 35 35 35 35 35 35

Notes: Data from U.S. EPA, 2013 Design Value Reports, PM2.5 Detailed Information Updated 8/24/14, available at

2. Monitoring sites with an annual deesign value status of 'X' hev been determined by EPA to represent unique microscale or middle scale locations are not used for comparison to the annual PM2.5 NAAQS. The 2013 revisions to 40 CFR 58 require a formal 3. For sites with approved seasonal sampling, the promulgated methodology may change the annual 98th percentile and 24-hour design value from the values posted on this website in previous years which were calculated under the 2006 NAAQS methodology. Data from 2011 and previous years processed using the 2006 rules can be found in the 2011 PM2.5 Detailed Information file posted here: http://www.epa.gov/airtrends/values.html. These changes in design values and corresponding changes in the trend are due to 1. In this table, all design values are calculated based on the rules specified in Appendix N for the 2013 PM2.5 NAAQS. The termDisclaimer: The information listed in this report and in these tables is intended for informational use only and does not constitute a

regulatory determination by EPA as whether an area has a attained a NAAQS. The information set forth in this report has no regulatory effect. To have regulatory effect, a final EPA determination as to whether an area has attained a NAAQS or attained a NAAQS as of its applicable attainment date can be accomplished only after rulemaking that provides an oppurtunity for notice and 4. EPA, CARB, and Imperial County APCD are currently discussing various issues concerning the validity of data associated with the 2011-2013 design values for the Calexico Ethel monitoring site (06-025-0005). 24-hour design values from this site should NOT be considered valid for use in a regulatory context until these issues are resolved.

## PM2.5 NAAQS, rank in data to use as 98th percentile

40 CFR 50 App. N 4.5 Procedures and Equations for the 24-Hour PM2.5 NAAQS (a) Table 1... except that where a site operates on an approved seasonal sampling schedule, equation 5 (1) Regular procedure for identifying annual 98th percentile values.

Annual creditable number of samples for year ‘‘y’’ (cny) P0.98, yis the nth maximum value of the year, where n is the listed number 1–50 1 51–100 2 101–150 3 151–200 4 201–250 5 251–300 6 301–350 7 351–366 8

Table for VLOOKUP() **rank_for_n_samples**

1 1 51 2 101 3 151 4 201 5 251 6 301 7 351 8

cny, n_samples P0.98,y, rank from VLOOKUP()

2 1 122 3 328 7 360 8

Table 1(a) Table 1... except that where a site operates on an approved seasonal sampling schedule, equation 5