UNITED STATES ENVIRONMENTAl PROTECTION AGENCY REGIONS 1445 ROSS AVENUE, SUITE 1200 DALLAS, TX 75202-2733



### Mr. Richard C. Chism Director, Air Monitoring Division Texas Commission on Environmental Quality, MC 165 Post Office Box 13087 Austin, TX 78711-3087
Dear Mr. Chism: 

# JAN- 2 2013

Thank you for submitting the Texas Commission on Environmental Quality's (TCEQ) 2012 Annual Air Monitoring Network Plan. The U.S. Environmental Protection Agency(EPA) has completed its analysis oftheTCEQ's2012 Annual Air Monitoring Network Plan to ensure it meets those requirements of40 CFR Part 58 and its appendices that confer approval authority on the Regional Administrator, now delegated to the Associate Director for Air. The network assessment process presents an opportunity for the EPA and TCEQ to collaborate on the air monitoring network design. See 40 CFR Part 58 App. D, 1.1.2.
We appreciate your cooperation and work to submit your 2012 network plan for ourreview and consideration for approval. The EPA has reviewed yourproposed changes for lead, ozone, nitrogen dioxide (N02), carbon monoxide, sulfur dioxide, and particulate matter monitors for the air monitoring network. I am pleased to inform you that theTexas Annual Air Monitoring Network Plan is approved byEPA Region 6 in accordance with 40 CFR §58.10 and §58.14, with the exception ofthe plan for N02 monitoring on which EPA will act in the future. While we are approving your network plan, there are someproposed changes we cannot approve as explained in the enclosure which details ourreview ofthe TCEQ air monitoring network. Per 40 CFR §58.10(a)(5) plans for establishing N0 2 monitoring sites are submitted to the EPA Administrator for action.
We look forward to our continued collaborations with the TCEQ. Ifyou have anyquestions, please contactme at (214) 665-3102, oryou may contact Ms. Maria Martinez, Air Quality Analysis Section Chief, at (214) 665-2230.

Enclosure Sincerely yours,

# ~~b~
Thomas H. Diggs Associate Director for Air

Reqcled/Req'cl1ble • PritJJrJd with Vegetatie Oil 8asod hts on 100% Recyded Paper (40" Posta:msumer)

### Texas Commission on Environmental Quality (TCEQ) 2012 Annual AirMonitoring Network Plan Comments
The Environmental Protection Agency (EPA) has reviewed your 2012 Annual Ambient Air Network Plan and comments 

### are provided below.


### I.Nitrogen Dioxide**(NO~)** 

### Network Pending action by the EPAAdministrator, EPA Region 6 preliminarily believes the selection of the Dallas Hinton site [Air Quality System (AQS) Site ID 48-113-0069], the Houston Clinton Drive site (AQS Site lD 48-201-1035), the Austin Northwest site (AQS Site 1D 48-453-0014), andthe San Antonio Northwest site (AQS Site ID 48-029-0032), meet the requirements for the area-wide N02 monitoring for the Dallas-FortWorth, Houston, Austin, and San Antonio core based statistical areas (CBSAs) as required by

### 40 CFRPart58, Appendix D 4.3.3. In order to continueto meet the goals ofthe area-wide N02monitoring.EPA concurs with theproposed relocation ofthe ND2 monitor cummdylocated atthe SanAntonio Camp Bullis site (AQS Site 

### ID 48-029-0052) tothe San Antonio Northwest site (AQS Site 

### ID 48-029-0032) byJanuary 

### l, 2013.
Wenote your acknowledgement that the E1 Paso Ascarate site (AQS Site 

### ID 48-141-0!)55), Houston ClintonDrive site (AQS SitelD 48-201-1035), Dallas-Arlington Municipal Airport site (AQS Site ID 48-439-30II), and.the Beaumont-PortArthurNederland High School site (AQS Site ID 48-245-1035) should be considered among the additional N02 monitors intended to help protect susceptible 

### and vulnerable populations as required by40 CFRPart 58, Appendix D 4.3.4.
EPA Region 6 also acknowledges yourpreliminary work in identifying potential near-road ND2 sites for the Dallas-Fort Worth and Houston CBSAs that would meet therequirements of40 CFR Part 58,Appendix D 4.3.2. Wewill continue to workwithTCEQ to ensure the near-road ND2 sites areoperational as expeditiously aspossible. At thistimewe concurwith theproposed nearroad ND2 location choices based onthe supplemental information provided byTCEQin Appendix A ofthis document. We look forward to workingwithTCEQ to implement near-road PM2.5monitoring as perthe PM:ts National Ambient Air Quality Standards (NAAQS) revisions signed by EPA Administrator Jackson onDecember 14,2012.
We appreciateTCEQ'splanning and efforts to relocate the NO, monitor from the Austin Audubon Society site (AQS Site ID 48-453-0020) to the Austin Northwest site (AQS Site ID 48- 453-0014) as ofApril2012.


### 2. Sulfur Dioxide (SO,) Network

We appreciatetheTCEQ'splanning and effortstohave all newly required S02 monitors deployed. The EPA agrees that TCEQ ismeeting EPA SOl monitoring network regulatory requirements in the following CBSAs: Dallas-Fort Worth-Arlington, Longview, Beaumont-Port Arthur, and Houston-Sugar Land-Baytown. Utilizingthe most recent U.S. Census population estimates and point sourceemission inventorydata, the TCEQ re-evaluated SD2 monitoring requirements and determined that onlyone 802 monitorisrequired in the San**Antonio-~ew**Braunfels CBSA. This supplemental information provided byTCEQ for this re-evaluation can 

### be found in Appendix B ofthis document. Afterjoint collaboration with TCEQ, it was
. determined that one S02 site is still required in the Austin-Round Rock and Amarillo CBSAs. We look forward to our ongoingjoint collaboration to ensure the deployment ofthe three new S02 monitors in the San Antonio-New Braunfels, Austin-Round Rock, and Amarillo CBSAs.
3. Lead {Pb) Network
We appreciate TCEQ's recurring reviews ofall Pb waivers to ensure that they continue to meet waiver eligibility requirements. EPA Region 6 approved the Pb monitoring waiver requests for the source-oriented Pb monitoring required at Coleto Creek Power LP in Goliad County and San Miguel Electric Cooperative, Incorporated in Atascosa County in our 2011 Annual Network Plan response letter.
We appreciate TCEQ's commitment to resubmit these Pb monitoring waivers every five years in compliance with Appendix D 4.5(a)(ii) and 40 CFR §58.10(b)(10). Please note that ifany ofthe approved Pb monitoring waiver circumstances significantly change, as might follow from a facility Pb emissions increase, the Pb monitoring waiver requests must be submitted soonerthan 2015.
EPA notes that Stinson Municipal Airport Pb Monitoring site is operational and began sampling as ofJuly 23, 2012. We appreciate TCEQ'splanning and efforts to deploy this monitor. Please note that the Stinson Municipal Airport Pb monitoring site maybecome a permanent monitoring site in the TCEQ network, in order to meet EPA requirements, ifthe rolling 3-month average of the monitoring data is above 50% ofthe NAAQS.
Asreferenced in your current 2012 Annual Network Plan, we expect resolution ofthe conflicts between your Emissions Inventory and EPA's Toxics Release Inventory with consequential implementation ofany required 0.5 tons per year (tpy) source monitoring orsubmittal of corresponding Pb monitoring waiver documentation before the submittal ofthe TCEQ 2013 Annual Network Plan.
We appreciate TCEQ'splanning and efforts to deploy the El Paso Ascarate Park SE site (AQS Site ID 48-141-0055) National Core multi-pollutantmonitoring station (NCore) Pb monitor, the Dallas Hinton site (AQS SiteID 48-113-0069) NCore Pb monitor, and the Houston Deer Park #2 site (AQS Site ID 48-201-1039) NCore Pb monitorpriorto December27, 2011.
We appreciateTCEQ's planning and efforts to relocate the Pb monitor from the El Paso Kern site (AQS Site 1D 48-141-0033) to the El Paso UTEP site (AQS Site lD 48-141-0037) as ofApril 2012.
4. Ozone (0,) Network
We appreciate TCEQ'splanning and efforts to locate the new required OJ site in the KilleenTemple-Fort Hood CBSA to meet the minimum OJ monitoring requirements of40 CFR Part 58, Appendix D, Table D-2. Throughout discussions with TCEQ, it has been noted that due to thepopulation ofthe Killeen-Temple"Fort Hood metropolitan statistical area (MSA) being greater than 350,000 and the design value ofthe Killeen site (AQS Site ID 48-027-1047) being 70 parts per billion (ppb), we request that the Temple monitor be deployed as early as possible in 2013. We look forward to our continued collaboration in orderto deploy this monitor.
5. Carbon Monoxide (CO) Network
EPA concurs with the proposal to maintain the carbon monoxide (CO) monitor at the Laredo Bridge site (AQS Site ID 48-479-0017).
6. ParticulateMatter of 10 Microns or Less (PlVJ 10) Network
EPA has reviewed the TCEQ PM 10 air monitoring network for collocation and we noted TCEQ's use ofthe following monitoringmethods in AQS: Manual Reference Method RFPS-1087-062, Manual Reference Method RFPS-1287-063, Manual Reference Method RFPS-1287-064, Manual Reference Method RFPS-0202-141, and Method 000 (multiplemethods in AQS). According to 40 CFR Part 58 Appendix A Section 3.3.1, for each network ofmanual 

### PMw methods, select 15% ofthe monitoring sites within the primaryquality assurance organization for collocated sampling. The collocated sites must bethe PM10 sites having annual mean particulate matter concentrations among the highest 25% ofthe annual meanconcentrations for all the sites in the network.
EPA notis·that TCEQ is currently meeting collocated requirements for Manual Reference**Method'RFPS~i287-064** and Manual Reference Method RFPS-0202-141 sites ofthe 

### PMw network.
In regards to Manual Reference Method RFPS-1087-062, EPA concurs with yourproposal to collocate PMw monitors at the El Paso Socorro Hueco site (AQS Site ID 48-141-0057) and the Laredo Border site (AQS Site ID 48-479-0016) in order to meet the collocation regulations. We note that these approved changes to the TCEQ network will 

### be completed before and reflected in the submittal ofthe 2013 TCEQ Annual Network Plan, as agreed during previous discussions with TCEQ.
EPA does not approve theTCEQ proposal to decommission the PM10 collocated monitors from the Texas City Fire Station site (AQS Site ID 48-1670-004), the Corpus Christi Dona Park site (AQS Site ID 48-355-0034), and the FortWorth Stage Coach site (AQS Site ID 48-439-3010). Ifthese sites were to be decommissioned, the portion ofthe TCEQ PM 10 utilizing Manual Reference Method RFPS-1287-063 would no longer meetthe PMw collocation requirements, since only onecollocated Manual Reference Method RFPS-1287-063 would remain. At this time, TCEQ is required to operate4 collocated monitoring sites utilizing Manual Reference Method RFPS-1287-063.
EPA does not approve the TCEQ proposal to decommission the PM 10 collocated monitor at the Dallas Convention Center site (AQS Site ID 48-113-0050). Ifthis site was to be decommissioned, the portion ofthe TCEQ PM 10 utilizing Method 000 would no longermeet the PM 10 collocation requirements, since this would eliminate all collocated sites utilizing thismethod. Atthis time TCEQ is required to operate one PM10 collocated site designated as method 000 (multiple methods in AQS). We look forward to future discussions with TCEQ regarding this method code inAQS.

EPA concurs with TCEQ's decision to refrain from deploying 

### acontinuous PM10 monitor at the Houston Clinton site (AQS Site ID 48-201-1035). However, the TCEQ must retain the filterbased PM10 monitors at the Houston Clinton site (AQS Site ID48-201-1035).
7. Particulate Matter of2.5 Microns orLess CPM, <>Network
EPA notes that TCEQ has continued to operate the PMBmonitors at the Corpus Christi Huisache site (AQS Site ID 48-355-0032). Due to the PM2.s NAAQS revisions onDecember 14, 2012, EPA no longer approves TCEQ'srequest to decommission the primary

### PM2

### .s federal reference method (FRM) monitor atthe Corpus Christi Huisache site (AQS Site ID 48-355- 0032). Theannual design.value 

### atthe CoT-us Christi Huisache site (AQS Site ID 48-355-0032) is 10.3 micrograms per cubic meter (JLg/m ), which is 86% ofthe new annual PM25 NAAQS (12 11glm 3) an.d the24•hourdesign value is24 11glm3

, which is 69"/o ofthePMu 24-hourNAAQS (35 11glm3). Sincethe annual design value for the Corpus Christi Huisache site(AQS Site ID 48- 355-0032) is within.

### SO% ofthenew PM2

.5 NAAQS (12 J.lg/m3) wecannot approve this proposed changeto theTCEQnetwork. Welook forward to future discussions with TCEQ concerningthe relocation ofthe

### PM 2.s collocated FRM monitor currentlylocated atthe Corpus Christi Huisache site (AQS SiteID 48-355-0032).
EPA appreciates TCEQ'sclarification regarding the continued operationofthe PM2.s FRM monitor at theFortWorth Northwest site (AQS Site ID 48-439-1002).


### ln order to reflect thetimely implementationofnetwork efficiencies, please completethe following approved changes to the TCEQ network before, orpropose a timeline in, the submittal ofthe 2013 TCEQ Annual Network Plan:
• We concurwith relocating the PM2.s tapered element oscillatingmicrobalance (TEOM) monitor from the El Paso SunMetro site (AQS SiteID 48·141-0053) to the El Paso Socorro Hueco site(AQS Site ID 48-141-0057),
• We concurwith the deployment ofa FRM every sixth daysampling PMH monitor at 

### the**Galveston~** Street site (AQS Site ID 48-167-1034) in orderto support exceptional event analyses,
• We concur with the continued operation ofthe required PM2.s FRM samplingon an every sixth day basis at the Corpus Christi Dona Park site (AQS Site lD48-355-0034),
• Weconcur with relocating the PM25 TEOM from the Corpus Christi West site (AQS Site lD4S-355-0025) to the Corpus Christi Dona Park site(AQS Site ID 48-355-0034),
• We concurwith the decommissioning ofthe speciatedPM2.s analysis at the Austin Audubon Society site (AQS Site ID 48-453-0020), butthe retention ofthe PMz.s gravimetric FRM analysis to meet Federal requirements,
• We concur with the continued operation oftherequired PMu FRM sampling on an every sixth day basis at the Austin Webberville Road site (AQS Site ID 48-453-0021),
• We concurwith relocating the PM2.s TEOM from the Austin Northwest site (AQS Site ID 48-453-0014) to the Austin Webberville Road site (AQS Site ID 48-453-0021),

### • We concur with the continued operation ofthe required PMB FRM sampling on an every sixth daybasis at the Baytown site (AQS Site ID 48-201-0058),
• We also concur with the relocation ofthePMu TEOM from the Channelview site (AQS Site ID 48-201-0026) to the Baytown site (AQS Site ID 48-201-0058),
• And we concur with TCEQ'sproposal to replace the PM2.s speciation monitor with a continuous PM25 monitor at the Isla Blanca site (AQS Site 

### JD 48-061-2004).
8. Reactive Nitrogen Compounds (NO,.) Network


### EPA appreciates TCEQ's efforts to raise all regulatory total reactive nitrogen compound (NOy) converters to the required 

### I0 meterheight at applicable monitoring sites in order to meet

### PAMS and NCore requirements. We understand that the height ofthe converters were raised at the Houston Deer Park #2 site (AQS Site ID 48-201-1039) and the El Paso Charnizal site (AQS Site ID 48-141..0044) in 2010, atthe Dallas Hinton site (AQS Site ID

### 48-113-0069) in 2011, and at the Denton Airport South site (AQS Site ID 48-121-0034) in 2012. In order to reflect the timely implementation ofnetwork efficiencies, werequest the height ofthe converters at the Houston Aldine site (AQS Site ID 48-20 1·0024) and theSETRPC40 Sabine Pass site (AQS Site 

### JD 48- 245-0101) be completed before, or propose a timeline in, the submittal ofthe 2013 TCEQ Annual Network Plan.
9.Volatile OrganicCompound <VOC) 

### Monitoring 

### TCEQ requested special project fundingfor an additional Automated Gas Chromatograph (AutoGC) on the east side ofEI Paso in order to bettercharecterize the El 

### Paso-Juarez airsbed 

### (Paso del Norte airshed). This. special project was funded in orderto provide monitoring from at least September I, 2012 through August 31, 2013. Therefore, EPA does not approve the proposal to discontinuethe

### Automated Gas Chromatograph (AutoGC) monitoring at the 

### El Paso Delta site (AQS Site ID 48-141-1011).
We approve the request for the discontinuation ofseven Photochemical Assessment Monitoring Stations (PAMS) VOC canistermonitors since these monitors go beyond the minimum PAMS requirements for the DFW, Houston, and El Paso PAMS 

### areas. The seven proposed VOC canistermonitors for decommissioning are at the following sites: Italy, Dallas (AQS Site ID 48- 139-1044), Ascarate Park SE, El Paso (AQS SiteID 48-141-0055), Galveston 991 h 

### Street (AQS Site ID 48-167-1034), Houston Aldine (AQS Site ID 48-201-0024), Northwest Harris County (AQS Site ID 48-201-0029), Kaufinan, Dallas (AQS Site ID 48-257-0005), and the Houston Conroe Relocated site (AQS Site ID 48-339-0078).
10. Multi-pollutant 

### Monitoring Sites Baytown Eastpoint Site 

### We appreciate TCEQ'splanning and efforts in the relocation ofthe Houston Regional Office site (AQS Site ID 48-201-0070) 0), 

### S02, and meteorological monitors to the new Baytown Eastpoint site (AQS Site ID 48-201-1017) in east Houston as ofJune 2012.Harlingen Teege Site 

### In EPA'sresponse letterto TCEQ's 2011 Annual Network Plan, we concurred with the relocation ofthe Mercedes, TX site (AQS Site ID 48-215-1048) 0 3 

### and meteorological monitors to the Harlingen area in order to meet minimum 

### 03 monitoring requirements of40 CFR Part 58, Appendix D, Table D-2. EPA also ooncurred with the decommissioning ofthe semi-volatile organic oompoands (SVOC), canister, and solarradiation monitors at the Mercedes, TX site (AQS Site ID 48-215-1 048). We note that the Harlingen Teege site (AQS Site ID 48-061-1023) 

### 03 monitor was operational and began sampling as ofOctober 9, 2012. We appreciate TCEQ's planning and efforts to relocate these monitors.
El Paso Socorro Hueeo Site (new Socorro Site) 

### EPA concurs with TCEQ's request to relocate the E1 Paso Socorro site (AQS Site ID 48-141- 0057) monitors to the El Paso Socorro Hueco site (the site AQS Site ID will remain 48-141- 0057). Thecurrentmonitors identified in the TCEQ 2012 Annual Network Plan Appendix A at theEl Paso Socorro site (AQS Site ID 48-141-0057) include an 0 3 

### monitor, a SVOC special purpose monitor(SPM), and one PMto filter-based monitor. As stated previously in this document, we also concur with TCEQ's request to operate a collocated PM10 

### monitor at the new site. TCEQhas 

### committed to ensure that the monitors will be deconunissioned and relocated no later

### than January 1, 2013.
EPA approves the relocation ofthe PM2.s TEOM, SVOC SPM, and canister samplers at the El Paso Sun Metro site (AQS Site ID 48-141-0()53) to 

### the new El Paso Socorro Hueco site (AQS Site ID 48-141·0057). We look forward to future discussions to verifyTCEQ's plans for the SVOC monitors at the El Paso Socorro site (AQS Site ID 48-141-0057) and the El Paso Sun Metro site (AQS Site ID 48-141-0053).
We also concurwith the decommissioning ofthe CO monitor, the 

### SOl 

### monitor, and meteorological monitors currently located at the El Paso Sun Metro site (AQS Site ID 48-141- 0053). The 3-year design values for the CO monitor at the E1 Paso Sun Metro site (AQS Site ID**48~141..0053)** 

### was 2.2 parts permillion (ppm) for the 8-hour !).verages, which is 23% ofthe CO 8-hour 

### primary NAAQS (9 ppm), and 4.0 ppm for the 

### 1-houraverages, which is lio/o ofthe CO 1-hourprimaryNAAQS (35 ppm). The 3-year design value for the S02 monitoratthe El Paso Sun Metro .site (AQS Site ID 48-141-0053) was 11 ppb for the !-houraverages, which is 15% ofthe**S~** 

### 1-hrprimaryNAAQS (75 ppb). TCEQ has committed to 

### ensure that the monitors will be

### decommissioned and relocated no later than January I, 2013.
San Antonio Downtown Site 

### EPA concurs with TCEQ's request to permanently decommission the CO and oxides ofnitrogen (NO, ND2, NO,) monitors at the San Antonio Downtown site (AQS Site ID 48..029-0046). The 3-year design values for the CO monitor at the San Antonio Downtown site (AQS Site ID 48- 029-0046) was 2.6 ppm for the 8-hour averages, which is 28% ofthe CO 8-hourprimary NAAQS (9 ppm), and 4.7ppm for the !-hour averages, which is 13% ofthe CO !-hourprimary NAAQS (35 ppm). "The 3-year design value for**theN~** 

### monitor at the SanAntonio Downtown site (AQS Site ID 48-029-0046) was 54 ppb for the !-houraverages, which is 54% of**theN~** 

### 1- hrprimary NAAQS (1

### 00ppb). In order to reflect the timely implementation ofnetwork

### efficiencies, please complete the approved changes to the TCEQ network before, orpropose a timeline in, the submittal ofthe 2013 

### TCEQ Annual Network Plan. Ojo De

### Agua Site 

### EPA concurs with the relocation ofthe El Paso Tillman site (AQS Site ID 48·141-0002) 

### to the approved Ojo De Agua site location identified byTCEQ duringprevious communications. We require TCEQ to complete the relocation ofthe collocated Pb monitors, collocated PM10 

### monitors, the CO monitor, and meteorological monitors no laterthan January I, 2013, 

### since this request was originally approved 

### in EPA's 2011 

### TCEQ Annual Network Plan response letter.
11. 

### Changes Proposed in 

### the 2011 ANR


### We appreciate TCEQ's planning and efforts to eitherdeploy orrelocate the following sites: • the La 

### Porte Radar Profiler site (AQS Site 

### ID 4S-201-1043) 

### in the Houston 

### area as of May 2012,
• the 

### Laredo Vidaurri site (AQS Site ID 48-479-0016) 

### as ofAugust 2012, 

### • the Port Arthur West site (AQS Site

### ID 48-245-0011) as 

### ofJuly 2012,
• the 

### relocation ofthe Lynchburg Ferry 

### site (AQS Site

### ID 48-201-1015) 

### in Houston 

### across the ship channel as ofDecember 2011,
12. 

### TCEQ NetworJs 

### Table (AppendixA of

### TCEO 2012 Annual Network Plan)


### EPA notes that since the 2011 

### TCEQ Annual Network Plan, the spatial scale for the Pb monitors at the Frisco Eubanks site (AQS Site ID 48-085-0009} 

### and theTerrell Temtex site (AQS Site ID 48-257-0020) 

### have changed from middle scale to neighborhood scale. We look forward to future 

### discussions with TCEQ 

### in order to determine the most appropriate spatial scale for these sites. Please note that EPA would liketo discuss the spatial scale ofany monitors before they are altered to ensure the most appropriate scale for each particularmonitor.
EPA concurs with the continuation ofthe intensive carbonyl sampling at the Dallas Hinton site (AQS Site ID 48-113-0069). 

### We note that the comet sampling frequency is eight, three-hour samples perday every three days from June I through August 31, 

### as stated in the TCEQ 2012 

### Annual Network Plan document. However, the TCEQ networktable identifies the sampling period 

### as July through August. We request a revision to the sampling period 

### in the 2013 

### TCEQ Annual Network Plan submittal.
EPA notes that the TCEQ 2012 

### Annual Network Plan Appendix A identified the Carbon PM2s sampler at the Houston Deet Park #2 

### site (AQS Site ID 48-201-1 039) 

### as part ofthe National Air Toxics Trends Stations (NATTS) Quality Assurance Project Plan (QAPP). BlackCarbon is not a core compound required for NATTS and was therefore removed from the NATTS QAPP. Please clarify 

### the sampler'spurpose and operation. The Carbon PM2.5 sampler may need to be removed from Appendix Ain the TCEQ 20 13 

### Annual Network Plan submittal.
EPA notes that the TCEQ 2012 

### Annual Network Plan Appendix Aidentified the PM 1 

### o Speciation sampler at the Houston Clinton Drive site (AQS Site ID 48-201-1035) 

### as using the Hi VolfGravimetric/ICP-MS for its sampling method/analysis. It

### was noted that this sampling was

### not covered in

### the SLAMS QAPP. The SLAMS QAPP provided information specifically for PM10 

### nickel (Ni) and chromium (Cr) 

### only at the Dallas Morrell site (AQS Site lD 48-113-0018) using the Hi Vol/ICP-AES. Please clarify the sampler's purpose and openuion. The PM10 Speciation samplermay need to be removed from Appendix Ain the TCEQ 2013 Annual Network Plan submittal.
Please note that any P AMS and/or NCore monitoring sites must also beidentified as SLAMS. We expect this condition to be reflected in the TCEQ's 2013 Annual Network Plan table.