UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGIONS



### Mr. F. David Martin Secretary 1445 ROSS AVENUE, SUITE 1200 DALLASTX 75202-2733



### New Mexico Environment Department Post Office Box 5469 Santa Fe, New Mexico 87502-5469 Dear Mr. Martin: Thank you for providing your correspondence for the New Mexico Environment Department's (NMED) 2011 Annual 

### Monitoring Network Plan. The U.S. Environmental Protection Agency (EPA) has completed its analysis ofthe NMED's 2011 Annual 

### Monitoring Network Plan to ensure it meets those requirements of40 CFR Part 58 and its appendices that confer approval authority on the Regional Administrator. We appreciate your cooperation and work to submit your network plan. The EPA has 

### reviewed the proposed particulate matter (PM) 

### monitor changes to the New Mexico Monitoring Network, and I am pleased to inform you that your 20II networkplan is approved. The network assessment process presents an opportunity for the EPA and the 

### NMED to collaborate on air monitoring network design. 

### See 40 CFR Part 58 App. D, 1.1.2. Details regarding our review of your air monitoring network are provided in the enclosure. In addition, we would like to thank you for your correspondence expressing your interest in terminating PM monitoring at two ofNMED's air monitoring sites. The EPA 

### has reviewed this information in conjunction with our review ofthe NMED's 2011 Annual 

### Monitoring Network Plan. Details regarding our review are provided in the enclosure. We appreciate the NMED's work to upgrade the monitors in

### the Border and Energy Sectors and the NMED's collaborative work done on the ammonia and mercury monitoring special projects. We look forward to our continued collaborative work with the NMED on your 2012 ambient air monitoring network plan. If

### you have any questions, please contact me at (214) 665-2100, or your staffmay contact Ms. Maria Martinez ofmy staffat (214) 665-2230.

Enclosure

Internet Address (UAL) • http:t1Www,epa.govtregion6 Recycled/Recyclable • Printed with Vegetable Oil Based Inks on 100% Recycled Paper, Process Chlorine FreeTechnical Comments on New Mexico Environment Department (NMED) 20II Annual Monitoring Network Plan
Change Approvals: Particulate Matter (PM) We have no objections to NMED's proposal to deploy aiLcontinuous monitors.for PM2. 5 sampling by utilizingthe BAM }020 monitors.. T ransitionirjg to coritiriu!}us monitors will be a resource savings to NMED. TheBAM I020 is one. ofthe instruments approved as a Federal EquivalentMethod (FEM)

..Please note any PM2.5 datacoii.ectei:l With the BAM I020FEM monitors are coiJ1parableforcompliancewith the PM2.5 National Ambient::Air:Quality Standari:ls.(NMQS). We

### en~ourage NMED toJearnas in\i_ch as.possil:)ka!Xnit iheB!\M I020 monitors; espeCially aboui.(heir:jiliique operations ahddata·generation compared to.the fiher based methods to ensure a.smooth'transition;,to the·continuous·instruments. We also have no objections to your.proposal to replace PMlO FederaLReference Methoi:l (FRM) 

## m 0nitors with PMI0 tapered elementoscillating**irij~tobalari~e** (TEOl\1) monitors, Any:data collected with the continuous PMlO TEOM monitors are:comparable for"ompliance with.the.PMlONAAQS, We wm.ild-prefer to.see·aselect mirtib.er ofthe, PM2.5 ani:IPMIO sites' c6ntinllous moilitors operated in corijiinction with'theiRM**mo~ito~** to**v~rizy** 

## dati! quality unfirtlie TEOM monitors. are stabilize(!. The requests to:discontinue the PM2,

## s· and PM!0 monitors atthe SZGRoswell site (Air.Qualiiy System, AQS #35-005"0005) ani:l the 7S Silver City site:(A.QS#35-Q17- 1002) are**ajljlr~ve<!.** The.20Q8,201Q three year PM2.5design vallies are \y'ell within·the PM2.5**24~hour** and.annuaLNAAQS (3'5 micrograms per cubic meier, ug/m3;:15 ug/m3) withvalues of 12.7 ug/m3 and 

### p ug/m3 respectively 

### atthe SZ(JRos,We!Lsite and I0.5' ug/m3 and 4:8 ug/rilJrespectively at the 7S Silver eity site, In addition, the PMlO monitors.atboth sites have·nobreporied any exceedance(s).ofthe 24-hour NAAQS'(150 ug/ri13) .during 200,8"2,.0 10. The liigl)esfPMl

### Q Vallie mea5utedatthe 5ZQ R,oswell site was 98 ug/m3 in.2008 and atthe 7S Silver City site was 32 ug/m3 ih 2009. We conClude .thatthe discontinuationwoul9 not COIIlpromise the data collectiori**ne~ded** for imjllerilentation Ofthe PMIO and:PM2i5 NAAQS, ahdthe 40 CFRPart 58, App. D requirements are met. 

### See40 CFR §58.14(c)(l) and Part 58, AIJP· D, 4.6 and4.7. Network Assessments: Ozone The current ozone networkfor NMED satisfies the. minimum requirements. 

### See 40 CFR Part**5~,** App. D, 4.1. We appreciateNMED's wotk toward.the new rural ozone site in Rio Arriba County,Carbon Monoxide (CO) The current CO network forNMED satisfies the minimwn requirements. See 40 CFRPart 58, App. D,4.2. Nitrogen Dioxide (N07) The current N02.network for NMED satisfies the minimwn requirements. See 40 CFR Part58, App. D, 4.3. SulfurDioxide (802) The current S02 networkfor. NMED satisfies the minimum requirements. 

### See 40 CFR Part 58; App. D, 4:4. The so2·m9nitor 111 the 7T Hurley Smelter**~~te** (AQS**#35~** Ol7-i003) has not come within 20%.ofthe l-hour.S02 NAAQS since2002, withinJ!% of,the 24-hour NAAQS since 2001 andwithin !Oo/,o ofthe annual NAAQS since.2001. The operation ofthe 7T Htiriy Smelter S02'fuimitoris included in the.**~tate** Implementation Plan (SIP) maintenance plan and,any request to discontinue the monitor**req~if<:s'an** update to**~e** 

### SW. See 6UR54627 (September 18, 2003). Any·requestfor a system-modification underAO CFR § S8.

### i4(c) should be.submitted in Writing to EPA Region6.

. ·
Requests for Additional Information: Please provide.aWritten.response for the following PMissues to theEPA Region 6 Air Quality Analysis Section Chiefwithin 45 days ofthe date ofthis letter:
PM The annual monitoring network.plan indicates.that NMED operates collocated PM10 FRM monitors at the 3HM Runnels .site (AQS**#35-049~0020)** and the7D Deming site(AQS•#35-029-0001). We don't S!=e any Pl\110 data froll'l 

## acollocated m<mitor at these sites inAQS: Please checkon this itiformation and verify that.the data is in AQS. Accordingto the networkplan, NMEDoperates both PM10 FRM and PM 10 TEOM monitors at .the 6CM Anthony site (AQS #35-013-0016) and the 6ZG Suriland Park site (AQS #35-013-0017). Are the PMlO TEOM monitors collocated with the PMlO FRM monitors to meetthe 15% collocation requirements? Please note that any PMI0 monitoring-site that.is used to satisfy the 15% collocation•requirements must use the same Cl!libratioii, sampling, analysis and verification/validation procedures. 

### See 40 CFR Part 58, App.A, 3.3.1.2. Please clarify this information. The annual monitoring network plan.also indicates that NMEDoperates collocated PM2.5 FRM•monitors.at the !FO Farmington site (AQS #35-045-0019). Wedon't see any PM2.5 data from a collocated monitor at this site in AQS. Please check on this information and verify that the data is in AQS. According'to.AQS; there is·aPMlO TEOM State or Local Air Monitoring Stations (SLAM:S) monitor at the 6ZM DesertView site (AQS imc613c0021). This monitor. is notidentifiedin the annual monitoring network plan. Please check on this inforrriation and verify whether this information is accurate in AQS.