OJAVfairqualilymanagementdistrict 0 D t Mojave Desert Air Quality Management District14306ParkAvenue,Victorville,CA92392-2310760.245.1661•fax760.245.2699Visitourwebsite:http:I/wwwmdaqmd.ca.govEldonHeaston,ExecutiveDirectorWayneNastriRegionalCoordinatorU.S.E.P.A.Region975HawthorneStreetSanFrancisco,CA94105-3901AnnualSLAMSDataCertificationDearMr.Nastri,June27,2007Inaccordancewithrecentamendmentsto40CFRPart58,thislettercertifiesthattheMojaveDesertAQMDandtheAntelopeValleyAPCDhassubmittedambientairmonitoringdataforthe2006calendaryeartoAIRS(AerometricInformationRetrievalSystem).Ialsoaffirmthat,tothebestofmyknowledge,thesedataaccuratelyrepresenttheambientairqualityinbothdistricts.Incompliancewith40CFR58.15youwillfindAMP45ONCandAMP24OfromboththeAntelopeValleyAQMDandMojaveDesertAQMDattached.ChrisCollins,AIQSupervisorMojaveDesertAQMD RECEIVED JUL 102007AIRDIVISIONU.S.EPA,REGION9CityoflbwnofCityofMelantoAppleValleyBarstowCityofCityofCountyofCountyofCityofHesperiaNeedlesRiversideSanTwentynineBernantinoPalmsCityofTownofVictorvilleYuccaValleyCityofBlytheUNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SUBSYSTEM P/A REPORTING ORG SUMMARY Jun. 26. 2007 REPORT ORG: 0042 Antelope Valley APCD AGENCY TYPE: I [ PARAMETERCODE DESCRIPTION **** PRECISION DATA   ** ****************************** ACCURACY DATA REC MODE YEAR Q #OF PRECIS PROB LIM LOC PRI ACC AUDIT NO AUDITS PROB LIM PROB LIM PROB LIM PROB LIM AUDIT CLASS LO UP STD TYPE TYPE Ll-3 L4 LO-Li-UP LO-L2-UP LO-L3-UP LO-L4-tJF 42101 Carbon monoxide CONTINUOUS 2006 1 48 -8.6 5.4 ANALYTICAL 1 1 13 -2.3 0.4 2 1 9 -6.3 13.6 3 1 13 -4.7 -3.3 4 1 13 -4.4-2.6 PARAMETERCODE DESCRIPTION   PRECISION DATA ** ** ******************************** ACCURACY DATA REC MODE YEAR Q #OF PRECIS PROB LIM LOC PRI ACC AUDIT NO AUDITS PROB LIM PROB LIM PROB LIM PROB LIM AUDIT CLASS LO UP STD TYPE TYPE L1-3 L4 La-Li-U? LO-L2-UP LO-L3-UP LO-L4-UP 42602 Nitrogen dioxide CONTINUOUS 2006 1 51
—9.1 2.3 ANALYTICAL 1 1 13
—9.3 -3.0 2 1 13 -1.5 2.4 3 1 12 -4.7 -0.5 4 1 13 -7.7-3,1 PARAMETERCODE DESCRIPTION   PRECISION DATA ** * ******************************** ACCURACY DATA ***************************** EEC MODE YEAR Q #OF PRECIS PROB LIM LOC PRI ACC AUDIT NO AUDITS PROB LIN PROB LIM PROB LIM PROB LIM AUDIT CLASS LO UP STD TYPE TYPE L1-3 L4 LO-L1-UE LO-L2-UP LO-L3-UP LO-L4-UP 44201 OzoneCONTINUOUS 2006 1 52 0.0 5.8 ANALYTICAL 1 1 13 -1.7 5.7 2 1 13 2.2 6.0 3 1 13 0.7 4.0 4 1 13 0.9 5.4 Page38of 781 0 0UNITES STATES ENVIRONMENTAL PROTECTION AGENCY User ID: MPW QUICKLOOK ALL PARAMETERS Report Request ID: 443368 Report Code: (MP45ONC.._) Jun. 27, 2007 PROTOCOL SELECTIONS Parameter Classification Parameter Method Duration ALL SELECTED OPTIONS SORT ORDER HCR GROUP SELECTIONS Option Type Option Value Order Column ,_.—itelope AQMD, CA EVENTS PROCESSING EXCLUDE REGIONALLY CONCURRED EVENTS 1 STATE_CODE c-_______ _._) MERGE PDF FILES YES 2 COUNTY_CODE 3 SITE_ID 4 PARAMETER_CODE 5 POC 6 DATES 7 EDT_ID GLOBAL DATES Start Date End Date

2006 2006 Selection CrQa Page 1UNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM QUICKLOOK ALL PARAMETERS EXCEPTIONAL DATA TYPES fEDT DESCRIPTION 0 NO EVENTS 1 EVENTS EXCLUDED 2 EVENTS INCLUDED 3 EXCEPTIONAL EVENTS EXCLUDED 4 NATURAL EVENTS EXCLUDED 5 EVENTS WITH CONCURRENCE EXCLUDED 6 EXCEPTIONAL EVENTS WITH CONCURRENCE EXCLUDED 7 NATURAL EVENTS WITH CONCURRENCE EXCLUDED 0 0 0

Jun. 27, 2007UNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM QUICKLOOK ALL PARAMETERS - Jun. 27, 00i Po Rep # 1st Max 2nd Max 3rd Max 4th Max Arith. Parameter Unit Org Year Meth Obs Duration EDT Site ID: 06—037—9033 City: Lancaster County: Los Angeles Address: 43301 DIVISION ST., LANCASTER, CA 42101 Carbon monoxide Parts per million 1 0042 2006 093 7710 3.2 2.8 2.5 2.4 .341 HOUR 0 42601 Nitric oxide Parts per million 1 0042 2006 D99 8128 .358 .352 .295 .292 .0114 1 HOUR 0 42602 Nitrogen dioxide Parts per million 1 0042 2006 099 8128 .066 .066 .061 .D60 .0148 1 HOUR 0 42603 Oxides of Nitrogen Parts per million 1 0042 2006 099 8128 .416 .395 .340 .337 .0248 1 HOUR 0 44201 Ozone Parts per million 1 0042 2006 087 8309 .132 .125 .118 .116 .0579 1 HOUR 0 61101 Wind speed Knots 1 0042 2006 050 8747 20.0 17.4 16.5 16.5 4.20 1 HOUR 0 61102 Wind Direction Degrees Compass 1 0042 2006 050 8747 360 360 360 360 211.7 1 HOUR 0 61105 Peak Wind Gust Knots 1 0042 2006 020 8749 38 34 34 34 9.61 HOUR 0 62101 Outdoor Temperature Degrees Fahrenheit 1 0042 2006 040 8753 105 104 104 104 62.5 1 HOUR 0 64101 Barometric pressure Millibars 1 0042 2006 014 8754 948.5 948.2 948.2 948.2 931.68 1 HOUR 0 81102 PM1O Total 0—lOum STP Micrograms/cubic meter 1 0042 2006 063 59 63 60 57 56 26.4 24 HOURS 0 (25C) 81102 PM1O Total 0—lOum STP Micrograms/cubic meter 2 0042 2006 079 8739 198 191 169 167 23.6 1 HOUR 0 (25C) 85101 PM1O —CC Micrograms/cubic meter 1 0042 2006 063 59 58 56 56 56 24.9 24 HOURS 0 (LC) 88101 PM2.5

— Local Conditions Micrograms/cubic meter 1 .0042 2006 000 58 18.0 13.0 12.0 12.0 7.41 24 HOURS 0 (CC) Note: The * indicates that the mean does not satisfy summary criteria. Page 2of4 0 0UNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM QUICKLOOK ALL PARAMETERS METHODS USED IN THIS REPORT MULTIPLE METHODSINSTRUMENTAL INSTRUMENTAL INSTRUMENTAL INSTRUMENTAL INSTRUMENTAL INSTRUMENTAL INSTRUMENTAL INSTRUMENTAL INSTRUMENTAL INSTRUMENTAL HI-VOL SA/GMW-1200 INSTRUMENTAL-R&P 5A246B- INLET HI-VOL—SA/GMW1200

MULTIPLE METHODS GAS FILTER CORRELATION CO ANALYZER GAS PHASE CHEMILUMINESCENCE GAS PHASE CHEMILUMINESCENCE GAS PHASE CHEMILUMIMESCENCE ULTRA VIOLET ABSORPTION ELECTRONIC DR MACHINE AVG. ELECTRONIC OR MACHINE AVERAGE SPOT READINGELECTRONIC OR MACHINE AVG. BAROMETRIC SENSOR GRAVIMETRIC TEOM-GRAVIMETRIC GRAVIMETRIC

Jun. 27, 2007 METHOD PARAMETER CODE COLLECTION METHOD ANALYSIS METHOD ALL DDD 42101 093 42601 099 426D2 D99 42603 D99 44201 087 61101 050 61102 05D 61105 020 62101 040 64101 014 81102 063 81102 079 85101 063 Mote: The * indicates that the mean does not satisfy summary criteria. 0

Page3of4 0 0UNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM QUICKLOOK ALL PARAMETERS Jun. 27, 2007 REPORTING ORGANIZATIONS USED IN THIS REPORT REPORTING ORGANIZATIONCODE AGENCY DESCRIPTION 0042 Antelope Valley APCD Note: The * indicates that the mean does not satisfy summary criteria. Page 4 of.4 0 0 QUNITED STATES ENVIRONMENTAL PROTECTION AGENCY o

‘ AIR QUALITY SUBSYSTEM J P/A REPORTING ORG SUMMARY I Jun. 26, 2007 REPORT ORG: 0709 Mojave Desert AQMD AGENCY TYPE: I PARAMETERCODE DESCRIPTION **** PRECISION DATA   ** ****************************** ACCURACY DATA ******************************** REC MODE YEAR Q OF PRECIS PROB LIM LOC PRI ACC AUDIT NO AUDITS PROB LIM PROB LIM PROB LIM PROB LIM AUDIT CLASS LO UP STO TYPE TYPE L1-3 L4 LO-L1-UP LO-L2-UP LO-L3-UP LO-L4-UF 42101 Carbon monoxide CONTINUOUS 2006 2 100 -1.2 6.1 OTHER GAS PE AUDIT 6 0 -4.Ô 8.4 -0.4 2.5 0.8 0.8 ANALYTICAL STANDARDS NOT BY RO 1 2 26

—0.5 3.9 OTHER GAS PE AUDIT 6 0
-4.0 8.4
-0.4 2.5 0.8 0.8 STANDARDS NOT BY RO 2 2 24 1.0 3.8 3 2 25 2.4 4.9 4 2 25 —3.9 7.9 PARAMETERCODE DESCRIPTION   PRECISION DATA ** ** ******************************* ACCURACY DATA REC MODE YEAR Q #OF PRECIS PROB LIM LOC PRI ACC AUDIT NO AUDITS PROB LIM PROB LIM PROB LIM PROB LIM AUDIT CLASS LO Up STD TYPE TYPE L1-3 L4 LO-L1-UP LO-L2-UP LO-L3-UP LO-L4-UP 42401 Sulfur dioxide CONTINUOUS 2006 2 84 -1.6 13.8 OTHER GAS PE AUDIT 6 0 -10.1 8.7 -9.6 7.5 -10.0 7.1 ANALYTICAL STANDARDS NOT BY RO 1 2 26 -0.9 6.2 OTHER GAS PE AUDIT 3 0 STANDARDS NOT BY RO 2 2 19 2.6 10.8 OTHER GAS PE AUDIT 3 0 -10.1 8.7-9.6 7.5 -10.0 7.1 STANDARDS NOT BY RO 3 2 15 6.3 10.7 4 2 24 5.2 10.4 Page 394 of 781 aUNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SUBSYSTEM P/A REPORTING ORG SUMMARY REPORT ORG: 0709 Mojave Desert AQMD AGENCY TYPE: I r PARAMETERCODE DESCRIPTION   PRECISION DATA ** ** ******************************** ACCURACY DATA REC MODE YEAR Q #OF PRECIS PROS LIM LOC PRI ACC AUDIT NO AUDITS PROB LIM PROB LIM PROS LIM PROS LIM AUDIT CLASS LO UP STD TYPE TYPE L1-3 L4 LO-Li-UP LO-L2-UP LO-L3-UP LO-L4-UP 42602 Nitrogen dioxide CONTINUOUS 2006 3 148
—4.9 4.5 OTHER GAS PE AUDIT 9 0 0.6 4.3 0.2 3.6 0.3 3.7 ANALYTICAL STANDARDS NOT BY RO 1 3 39 -4.7 3.5 OTHERGAS PE AUDIT 6 0 -0.3 4.9 0.6 2.3 0.0 3.2 STANDARDS NOT BY RO 2 3 36
-5.8 3.9 OTHER GAS PE AUDIT 3 0 0.6 4.3 0.2 3.6 0.3 3.7 STANDARDS NOT BY RO 3 3 37
—4.0 3.2 4 3 36
—2.3 4.6 PARAMETERCODE DESCRIPTION   PRECISION DATA ** ** ******************************** ACCURACY DATA ******************************** REC MODE YEAR Q #OF PRECIS PROB LIM LOC PRI ACC AUDIT NO AUDITS PROB LIM PROB LIM PROS LIM PROB LIM AUDIT CLASS LO UP SUB TYPE TYPE L1-3 L4 LO-L1-UP LO-L2-UP LO-L3-UP LO-L4-UP 44201 OzoneCONTINUOUS 2006 4 201 -1.3 5.1 PHOTOMETER PE AUDIT 12 0
-2.4 0.9
-1.6
-0.5 -1.9 0.0 ANALYTICAL (VERIFIED) NOT BY RO 1 4 52 -3.1 5.2 PHOTOMETER PR AUDIT 9 0 -2.6 0.7 -1.6 -0.3 -1.8 0.2 (VERIFIED) NOT BY RO 2 4 49 -0.1 4.4 PHOTOMETER PE AUDIT 3 0 -2.4 0.9-1.6-0.5-1.9 0.0 (VERIFIED) NOT BY RO 3 4 50 —0.3 5.1 4 4 50 -0.5 4.8 Page 395 of 781 0

Jun. 26, 2007UNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SUBSYSTEM P/A REPORTING ORG SUMMARY Jun. 26, 2007 REPORT 0kG: 0709 Mojave Desert AQMD AGENCY TYPE: I PARAMETERCODE DESCRIPTION PRECISION DATA **********t**t******t*********** ACCURACY DATA ARC MODE YEAR Q *OF PRECIS PROB LIM LOC PRI ACC AUDIT NO AUDITS PROB LIM PROB LIM PROB LIM PROB LIM AUDIT CLASS LO UP STD TYPE TYPE L1-3 L4 LO-Ll-UP LO-L2-UP LO-L3-UP LO-L4-UP 81102 PM1O Total 0-bum STP CONTINUOUS 2006 OTHER FLOW PE AUDIT 4 0

-2.2 1.0 FLOW STANDARDS NOT BY RO 1 OTHERFLOW PE AUDIT 1 0 STANDARDS NOT BY RO 2 OTHER FLOW PE AUDIT 3 0

-2.2 1.0 STANDARDS NOT BY RO PARAMETERCODE DESCRIPTION **** PRECISION DATA   ** *****************e************ ACCURACY DATA ******************************** EEC MODE YEAR Q *OF PRECIS PROB LIM LOC PRI ACC AUDIT NO AUDITS PROB LIM PROB LIM PROB LIM PROB LIM AUDIT CLASS LO UP STD TYPE TYPE L1-3 L4 LO-Ll-UP LO-L2-UP LO-L3-UP LO-L4-UP 81102 PM1O Total 0-bourn STP INTERMITTENT 2006 CERTIFIED PE AUDIT 2 0

-2.4 6.7 FLOW ORIFICE NOT BY DEVICE RD 1 CERTIFIED PE AUDIT 1 0 ORIFICE NOT BY DEVICE RO 2 CERTIFIED PE AUDIT 1 0

-2.4 6.7 ORIFICE NOT BY DEVICE RO Page 396 of 781

0 00 REPORT ORG: 0709 Mojave Desert AQMD

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SUBSYSTEM P/A REPORTING ORG SUMMARY AGENCY TYPE: I Jun. 26, 2007 PARAMETERCODE DESCRIPTION PRECISION DATA ******************************** ACCURACY DATA ****************************** REC MODE YEAR Q #OF PRECIS PROB LIM LOC PRI ACC AUDIT NO AUDITS PROS LIM PROB LIM PROB LIM PROB LIM I AUDIT CLASS LO UP STO TYPE TYPE Ll-3 L4 LO—L1-UP LO-L2-UP LO-L3-UP LO-L4-UP 88101 PM2.5

- Local Conditions INTERMITTENT 2006 OTHER FLOW PE AUDIT 2 0 -14.6 10.5 FLOW STANDARDS NOT BY RD 1 OTHER FLOW PE AUDIT 2 0 -14.6 10.5 STANDARDS NOT BY RD PARAMETERCODE DESCRIPTION ************* PRECISION DATA ************************ ACCURACY DATA REC MODE YEAR Q#OF COLLC PROS LIM COLLC SAMP VAL COLL LOC PRI ACC AUDIT AUDIT PROD LIM PROB LIM PROS LIM AUDIT CLASS SMPLS SITES LO UP BELOW LIM DATA PRS STD TYPE TYPE CNT LO-Li-UP LO-L2-UP LO-L3-UP 88101 PM2.5

- Local INTERMITTENT COLLOCATED 51 1 4.]. 5.8 10 1 2.5 6.5 214 1 3.5 7.3 3 313 1 4.1 8.0 0 4 14 1 3.7 7.2 1 Page 397 of 781 a 0

Conditions2006 1 7 447111313UNITES STATES ENVIRONMENTAL PROTECTION AGENCY User ID: MPW Report Request ID: 443508PROTOCOL SELECTIONS Parameter Classification Parameter Method Duration ALL

QUICKLOOK ALL PARAMETERS Report Cod450N) Jun. 27, 2007 SORT ORDER Order Column 1 STATE_CODE 2 COUNTY_CODE 3 SITE_ID PARANETER_CODE 45 POC[[ SCR GROUP SELECTIONSA Mojave Desert AQMD,C)/ Selection crca Page 1

6 DATES 7 EDT_ID

SELECTED OPTIONS Option Type MERGE PDF FILES EVENTS PROCESSING Option ValueYES EXCLUDE REGIONALLY CONCURRED EVENTS GLOBAL DATES Start Date End Date

2006 2006 0 0UNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM QUICKLOOK ALL PARAMETERS Jun. 27, 2007 EXCEPTIONAL DATA TYPES EDT DESCRIPTION 0 NO EVENTS 1 EVENTS EXCLUDED 2 EVENTS INCLUDED 3 EXCEPTIONAL EVENTS EXCLUDED 4 NATURAL EVENTS EXCLUDED 5 EVENTS WITH CONCURRENCE EXCLUDED 6 EXCEPTIONAL EVENTS WITH CONCURRENCE EXCLUDED 7 NATURAL EVENTS WITH CONCURRENCE EXCLUDED aI 0 0 0UNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM QUICKLOOK ALL PARAMETERS 81102 PM1O Total 0—lOum STP Micrograms/cubic meter 1 0709 2006 (25C) 063 58 56 49 47 44 23.3 24 HOURS 0 85101 PM1O

—LC

Site ID: 06—071—0306 City: Victorville Micrograms/cubic meter 1 0709 2006 (LC) County: San Bernardino 063 58 50 43 43 38 21.0 24 HOURS Address: 14306 PARK AVE., VICTORVILLE, CA 0

Po Rep # 1st Max 2nd Max 3rd Max 4th Max Arith. Parameter Unit Org Year Math Obs Duration EDT Site ID: 06—071-0001 City: Barstow County: San Bernardino Address: 200E. BUENA VISTA, BARSTOW

Jun. 27, 2007 42101 Carbon monoxide Parts per million 1 0709 2006 093 7847 3.5 2.6 1.9 1.6 .281 HOUR 0 42601 Nitric oxide Parts per million 1 0709 2006 099 7828 .343 .336 .332 .322 .0242 1 HOUR 0 42602 Nitrogen dioxide Parts per million 1 0709 2006 099 7828 .082 .082 .079 .078 .0224 1 HOUR 0 42603 Oxides of Nitrogen Parts per million 1 0709 2006 099 7828 .425 .413 .404 .400 .0459 1 HOUR 0 44201 Ozone Parts per million 1 0709 2006 087 7897 .112 .108 .102 .095 .0548 1 HOUR 0 61101 Wind speed Knots 1 0709 2006 050 8756 24.3 23.4 23.4 23.4 6.24 1 HOUR 0 61102 Wind Direction Degrees Compass 1 0709 2006 050 8756 360 358 358 358 238.2 1 HOUR 0 61105 Peak Wind Gust Knots 1 0709 2006 020 8757 41 40 40 39 12.4 1 HOUR 0 62101 Outdoor Temperature Degrees Fahrenheit 1 0709 2006 040 8756 112 112 112 111 65.3 1 HOUR 0 64101 Barometric pressure Millibars 1 0709 2006 014 7779 952.9 952.6 952.6 952.3 934.49 1 HOUR 0 81102 PM1O Total 0—lOum STP Micrograms/cubic meter 2 0709 2006 063 52 80 71 42 40 24.0* 24 HOURS 5 . (25C)

85101 PM1O
—LC Micrograms/cubic meter 2 0709 2006 063 52 77 64 40 39 22.8* 24 HOURS 5 (LC) Site ID: 06—071—0012 City: Phelan County: San Bernardino Address: BEEKLEY & PHELAN RDS, PHELAN 44201 Ozone Parts per million 1 0709 .121 .0600 1 HOUR 0 61101 Wind speed Knots 1 0709 26.9 6.43 1 HOUR 0 61102 Wind Direction Degrees Compass 1 0709 360 200.6 1 HOUR 0 61105 Peak Wind Gust Knots 1 0709 42 12.1 1 HOUR 0 62101 Outdoor Temperature Degrees Fahrenheit 1 0709 96 59.2 1 HOUR 0

Site ID: 06—071—0013 City: Lucerne Valley County: San Bernardino Address: .1IDDLE SCH—8560 ALIENTO, LUCERNE VALLEY

20062006200620062006

087050050020040

83598752875287528752

.13729.53604397

.13327.83604397

.12426.93604296 42101 Carbon monoxide Parts per million 1 0709 2006 093 8225 2.2 2.2 2.2 2.2 .371 HOUR 0 42401 Sulfur dioxide Parts per million 1 0709 2006 077 8288 .018 .015 .015 .014 .0015 1 HOUR 0 42601 Nitric oxide Parts per million 1 0709 2006 099 8289 .352 .348 .324 .323 .0200 1 HOUR 0 42602 Nitrogen dioxide Parts per million 1 0709 2006 099 8289 .079 .078 .073 .070 .0197 1 HOUR 0 42603 Oxides of Nitrogen Parts per million 1 0709 2006 099 8289 .401 .397 .377 .371 .0386 1 HOUR 0 44201 Ozone Parts per million 1 0709 2006 087 8291 .136 .113 .108 .102 .0561 1 HOUR 0 Note: The * indicates that the mean does not satisfy summary criteria. Page 2of6 0UNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM QUICKLOOK ALL PARAMETERS Jun. 27, 2007 p I Rep # 1st Max 2nd Max 3rd Max 4th Max Arith. JPameter Unit Org Year Meth Obs Duration EDT 06—071—0306 61101 Wind speed Knots 1 0709 2006 050 8751 31.3 26.9 26.9 26.1 6.30 1 HOUR 0 61102 Wind Direction Degrees Compass 1 0709 2006 050 8751 360 360 360 359 197.7 1 HOUR 0 61105 Peak Wind Gust Knots 1 0709 2006 020 8751 56 49 41 41 12.4 1 HOUR 0 62101 Outdoor Temperature Degrees Fahrenheit 1 0709 2006 040 8745 103 103 103 103 62.1 1 HOUR 0 63301 Solar radiation Langleys/minute 1 0709 2006 011 8759 1.50 1.43 1.43 1.42 .330 1 HOUR 0 64101 Barometric pressure Millibars 1 0709 2006 014 8757 926.9 926.9 926.9 926.9 911.42 1 HOUR 0 81102 PM1O Total 0—lOum STP Micrograms/cubic meter 1 0709 2006 063 60 62 59 56 54 33.4 24 HOURS 5 (25C) 81102 PM1O Total 0—lOuis STP Micrograms/cubic meter 2 0709 2006 079 8738 940 775 547 527 32.0 1 HOUR 5 (25C) 85101 PM1O

—LC Micrograms/cubic meter 1 0709 2006 063 60 56 53 49 49 30.7 24 HOURS S (LC) 88101 PM2.5

— Local Conditions Micrograms/cubic meter 1 0709 2006 000 57 22.0 19.0 19.0 18.0 10.40 24 HOURS 0 (LC) 88101 PM2.5

— Local Conditions Micrograms/cubic meter 2 0709 2006 000 57 19.0 18.0 17.0 17.0 10.33 24 HOURS 0 (LC) Site ID: 06—071—1234 City: Trona County: San Bernardino Address: CORNER OF ATHOL AND TELESCOPE 42401 Sulfur dioxide Parts per million 1 0709 2006 077 8250 .033 .017 .013 .011 .0014 1 HOUR 0 42402 Hydrogen sulfide Parts per million 1 0709 2006 020 8089 .100 .064 .064 .064 .0044 1 HOUR 0 42601 Nitric oxide Parts per million 1 0709 2006 099 8249 .049 .047 .042 .041 .0035 1 HOUR 0 42602 Nitrogen dioxide Parts per million 1 0709 2006 099 8249 .050 .047 .046 .045 .0049 1 HOUR 0 42603 Oxides of Nitrogen Parts per million 1 0709 2006 099 8249 .084 .077 .076 .071 .0067 1 HOUR 0 44201 Ozone Parts per million 1 0709 2006 087 8249 .091 .090 .090 .088 .0526 1 HOUR 0 61101 Wind speed Knots 1 0709 2006 050 8708 30.4 30.4 29.5 28.7 4.79 1 HOUR 0 61102 Wind Direction Degrees Compass 1 0709 2006 050 8706 360 360 360 360 150.8 1 HOUR 0 61105 Peak Wind Gust Knots 1 0709 2006 020 8711 45 44 44 43 10.3 1 HOUR 0 62101 Outdoor Temperature Degrees Fahrenheit 1 0709 2006 040 8701 112 112 112 112 67.7 1 HOUR 0 64101 Barometric pressure MilJ.ibars 1 0709 2006 014 8701 977.7 977.7 977.3 977.3 957.11 1 HOUR 0 81102 PM1O Total 0—lOum STP Micrograms/cubic meter 1 0709 2006 063 61 83 70 40 40 20.1 24 HOURS 5 (25C) 81102 PM1O Total 0—lOum STP Micrograms/cubic meter 2 0709 2006 079 8349 882 879 664 629 22.6 1 HOUR 5 (25C) 85101 PM1O

—LC Micrograms/cubic meter 1 0709 2006 063 61 77 72 39 38 19.3 24 HOURS 5 (LC) Note: The * indicates that the mean does not satisfy summary criteria. Page3of6 0 0 0UNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM QUICKLOOK ALL PARAMETERS Jun. 27, 2007 Po Rep # 1st Max 2nd Max 3rd Max 4th Max Arith. Parameter Unit Org Year Meth Obs Duration Ej Site ID: 06—071—4001 City: Hesperia County: San Bernardino Address: 17288 OLIVE ST., HESPERIA 44201 Ozone Parts per million 1 0709 2006 087 8303 .148 .134 .120 .112 .0602 1 HOUR 0 61101 Wind speed Knots 1 0709 2006 050 8750 25.2 24.3 23.4 22.6 6.15 1 HOUR 0 61102 Wind Direction Degrees Compass 1 0709 2006 050 8750 360 360 360 360 197.5 1 HOUR 0 61105 Peak Wind Gust Knots 1 0709 2006 020 8751 42 41 41 40 12.2 1 HOUR 0 62101 Outdoor Temperature Degrees Fahrenheit 1 0709 2006 040 8752 101 101 101 101 61.9 1 HOUR 0 64101 Barometric pressure Millibars 1 0709 2006 014 8753 918.4 918.4 918.1 918.1 903.45 1 HOUR 0 81102 PM1O Total 0—lOum STP Micrograms/cubic meter 1 070 2006 063 56 56 52 52 48 27.6 24 HOURS 5 (25C) 85101 PM1O

—LC Micrograms/cubic meter 1 0709 2006 063 56 53 48 45 43 25.3 24 HOURS 5 (LC) Note: The * indicates that the mean does not satisfy summary criteria. Page 4of6 o 0 0UNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM QUICKLOOK ALL PARAMETERS Jun. 27, 2007 METHODS USED IN THIS REPORT METHOD PARAMETER CODE COLLECTION METHOD ANALYSIS METHOD ALL 000 MULTIPLE METHODS MULTIPLE METHODS 42101 093 INSTRUMENTAL GAS FILTER CORRELATION CO ANALYZER 42401 077 INSTRUMENTAL FLUORESCENCE DETECTION 42402 020 INSTRUMENTAL PULSED FLUORESCENT 42601 099 INSTRUMENTAL GAS PHASE CHEMILUMINESCENCE 42602 099 INSTRUMENTAL GAS PHASE CHEMILUMINESCENCE 42603 099 INSTRUMENTAL GAS PHASE CHEMILUMINESCENCE 44201 087 INSTRUMENTAL ULTRA VIOLET ABSORPTION 61101 050 INSTRUMENTAL ELECTRONIC OR MACHINE AVG. 61102 050 INSTRUMENTAL ELECTRONIC OR MACHINE AVERAGE 61105 020 INSTRUMENTAL SPOT READING 62101 040 INSTRUMENTAL ELECTRONIC OR MACHINE AVG. 63301 011 INSTRUMENTAL PYRANO4ETER 64101 014 INSTRUMENTAL BAROMETRIC SENSOR 81102 063 HI—VOL SA/GMW—1200 GRAVIMETRIC 81102 079 INSTRUMENTAL-RaP SA246B—INLET TEOM—GRAVIMETRIC 85101 063 HI—VOL—SA/GMW1200 GRAVIMETRIC Note: The * indicates that the mean does not satisfy summary criteria. Page 5of6 0