# 2013 AMBIENT AIR MONITORING NETWORK PLAN

Monitoring and Compliance Division

May 2013SLOAPCD 2013 Network Plan 

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## Table of Contents

1. Introduction ......................................

................................................... ............................................ 1

2. Overview of Network Operation .....................

................................................... ............................ 2

2.1 Air Monitoring Network Design – Site Types and Spat ial Scales ..................................... 2

2.2 Ambient Air Monitoring Network in San Luis Obispo C ounty ......................................... 3
Changes to the Monitoring Network Since the Previou s Network Plan ............................ 3

Ozone Monitoring Network ..........................

................................................... .................. 4

Nitrogen Dioxide Monitoring Network ...............

................................................... ........... 6

Sulfur Dioxide Monitoring Network .................

................................................... ............. 8

PM 10 

### and PM 2.5 

### Particulate Monitoring Network ................... ........................................... 8

Other Networks ....................................

................................................... ........................... 9

2.3 Air Quality Data ..................................

................................................... .......................... 10

2.4 Proposed Network Changes and Improvements .........

................................................... .. 11

3. Overview of Non-network Monitoring ...............

................................................... ...................... 12

Appendix A: Minimum Monitoring Requirements ...................

................................................... ........... 1

Appendix B: Collocation Requirements ..........................

................................................... ..................... 1

Appendix C: Detailed Site Information .........................

................................................... ....................... 1

List of Figures

Figure 1: Map of Ambient Air Monitoring Stations i n San Luis Obispo County in 2012 ................... ..... 1SLOAPCD 2013 Network Plan 

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### List of Tables

Table 1: Relationship Among Site Type and Scale of Representativeness ............................... ............... 2
Table 2: Ambient Air Quality Parameters Monitored in San Luis Obispo County in 2011 .................. .. 7
Table 3: Some Sources of Ambient Air Quality Data

................................................... ............................. 10

Table A-1: Minimum Monitoring Requirements for Ozo ne ................................................ ................... A-1
Table A-2: Minimum Monitoring Requirements for PM 2.5 SLAMs .............................................. ........... A-1
Table A-3: Minimum Monitoring Requirements for Con tinuous PM 2.5 Monitors ............................... A-2
Table A-4: Minimum Monitoring Requirements for PM 10 .................................................. .................... A-2
Table A-5: Minimum Monitoring Requirements for NO 2 .................................................. ..................... A-3
Table A-6: Minimum Monitoring Requirements for SO 2 .................................................. ...................... A-3
Table A-7: Minimum Monitoring Requirements for CO

................................................... ...................... A-4
Table A-8: Minimum Monitoring Requirements for Pb at NCore .......................................... ............... A-4
Table A-9: Source Oriented Lead Monitoring (Includi ng Airports) ...................................... ................. A-4

Table B- 1: Collocation Requirements for PM 2.5 .................................................. .................................... B-1SLOAPCD 2013 Network Plan 

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# 1. Introduction

The San Luis Obispo County Air Pollution Control Dis trict (SLOAPCD) 2013 Ambient Air Monitoring Network Plan is an annual examination and evaluatio n of the SLOAPCD’s network of air pollution monitoring stations. This annual review of our Stat e and Local Air Monitoring Stations (SLAMS) network is required by Title 40, Code of Federal Re gulations, Part 58.10 (40 CFR 58.10). The review process helps ensure continued consistency with the network’s specific monitoring objectives defined in the regulations and confirms that the in formation in the state and federal monitoring records accurately and properly classify each stati on. Information is provided for all ambient air pollution monitoring which occurred in the county i ncluding sites operated by the California Air Resources Board (ARB). Data for ARB sites was obtai ned from that agency and are accurate to the best of our knowledge.

This report is a directory of existing and proposed monitoring in the SLOAPCD’s network of SLAMS monitoring stations and serves as a progress report on the recommendations and issues raised in earlier network reviews. The review period of this report looks back to July 2012 (the publication of the 2012 Ambient Air Monitoring Network Review) and looks forward to December 2014 anticipating any changes to the network. The Code of Federal Reg ulations requires specific detailed monitoring network information be included in this report alon g with a 30-day public review period prior to submittal of the report to the USEPA.

Figure 1: Map of Ambient Air Monitoring Stations i n San Luis Obispo County in 2012SLOAPCD 2013 Network Plan 

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# 2. Overview of Network Operation

2.1 Air Monitoring Network Design – Site Types and Spatial Scales
Federal regulations, specifically Appendix D to 40 CFR 58, require that a SLAMS network be designed to meet a minimum of three basic monitoring objecti ves: providing air pollution data to the public in a timely manner, supporting compliance with the NAA QS (see Appendix D), and supporting air pollution research. A variety of site types are nee ded to support these basic objectives, including th e six general types identified in Appendix D:

1. Highest Concentration: Sites located to determine t he highest concentration expected to occur in the area covered by the network.
2. Population Exposure: Those located to determine rep resentative concentrations in areas of high population density.
3. Source Oriented: Sites located to determine the imp act on ambient pollution levels of significant sources or source categories.
4. General/Background: Those located to determine gene ral background concentration levels.
5. Regional Transport: Sites located to determine the extent of regional pollutant transport among populated areas, and in support of secondary standards.
6. Welfare Related Impacts: Sites located to determine the welfare-related impacts in more rural and remote areas (such as visibility impairme nt and effects on vegetation).

The physical siting of an air monitoring station mu st conform to 40 CFR 58 and its location must achieve a spatial scale of representativeness that is consistent with the monitoring objective and sit e type. The spatial scale results from the physical l ocation of the site with respect to the pollutant sources and categories. It estimates the size of th e area surrounding the monitoring site that experiences uniform pollutant concentrations. The c ategories of spatial scale are:

• Microscale - An area of uniform pollutant concentra tions ranging from several meters up to
100 meters.

• Middle Scale – uniform pollutant concentrations in an area of about 110 meters to 0.5 kilometer.

• Neighborhood Scale – an area with dimensions in the 0.5 to 4 kilometer range.

• Urban Scale – Citywide pollutant conditions with di mensions of from 4 to 50 kilometers.

• Regional Scale – An entire rural area of the same g eneral geography (this area ranges from tens to hundreds of kilometers).
Table 1: Relationship Among Site Type and Scale of Representativeness

Site Type Appropriate Spatial Scale

Highest concentration Micro, middle, neighborhood ( sometimes urban)

Population Exposure Neighborhood, urban

Source Oriented Micro, middle, neighborhood

General/Background Neighborhood, urban, regional

Regional transport Urban, regional

Welfare-related impacts Urban, regionalSLOAPCD 2013 Network Plan 

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### 2.2 Ambient Air Monitoring Network in San Luis Obis po County

Figure 1 shows a map of all currently operating amb ient air monitoring stations in San Luis Obispo County, which also comprises the San Luis Obispo-Pas o Robles Metropolitan Statistical Area (MSA). Air monitoring responsibilities for the MSA are div ided between SLOAPCD and ARB, as allowed by 40 CFR 58, Appendix D, Section 2.e, and SLOAPCD acknowl edges this joint responsibility.

There are currently ten permanent ambient air monit oring stations in the MSA. Eight of these stations are operated by the SLOAPCD as part of our SLAMS network. ARB operates two additional stations in the county as part of their SLAMS networ k, one in Paso Robles and the other in San Luis Obispo. Table 2 lists these stations, the agency or company which operates them, the pollutant or meteorological parameters which are monitored at ea ch location, and the site type.



### Changes to the Monitoring Network Since the Previou s Network Plan

This section lists changes made to the District’s n etwork since the publication of the 2012 Ambient Air Monitoring Network Plan.

Ozone Monitoring Network: The Teledyne-API 400A ozone analyzer at the Atascad ero station failed in January 2013 and was replaced with a new Teledyne-API T400 ozone analyze r.

Particulate Monitoring Network: No changes were made to the Particulate Monitoring Network.

Nitrogen Dioxide Monitoring Network: The Teledyne-API 200A NO/NO 2 /NO x analyzer at the Morro Bay station failed in Decemb er 2012 and was replaced with a new Teledyne-API T200U analyzer in January 2013. The 200A at Nipomo Regional Park was also upgraded to a T200U in May 2 013.

Sulfur Dioxide Monitoring Network: The Thermo 43C SO 2 analyzer at Mesa2 was upgraded to a Teledyne-API T 100U SO 2 analyzer in March 2013.

Other:
1. A new roof and safety railing was installed at the Morro Bay station in November 2012.
2. The roof deck and safety railing were extended at t he Nipomo Regional Park station in September 2012.
3. A new safety railing was installed at the Red Hills site in February 2013.
4. The wind measurement systems at the Nipomo Regional Park, CDF, and Mesa2 stations were upgraded from mechanical cup and vane systems to MetOne 50.5 sonic anemometers in November 2012, May 2013, and January 2013, respe ctively.
5. The Environics S-100 Multi Gas Calibrators at the N ipomo Regional Park and Mesa2 stations were upgraded to Teledyne-API 700E Dynamic Dilution Calibrators in August 2012 and May 2013, respectively.
6. The data logger at the Morro Bay station was upgrad ed from an ESC 8816 to an Agilaire/ESC 8832 logger in February 2013.
7. The data acquisition system used retrieve, store, v alidate, and generate strings for AQS upload was upgraded from ESC’s E-DAS Ambient to Agi laire’s AirVision on January 1, 2013.SLOAPCD 2013 Network Plan 

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### Ozone Monitoring Network

All ambient air monitoring stations in the county e xcept for Mesa2, Grover Beach, and CDF monitor for ozone (see Table 2). The SLAMS network in San Lui s Obispo County features ozone monitors located in Atascadero, Red Hills, Carrizo Plains, P aso Robles, Morro Bay, San Luis Obispo, and Nipomo Regional Park.

Atascadero – Operated by the SLOAPCD since 1988, this populatio n-oriented neighborhood scale ozone monitor is located near the central business district of downtown Atascadero and is bounded on two sides by elementary schools. It provides a m easurement of representative ozone concentration for the City of Atascadero. Ozone con centrations at this site exhibit strong diurnal fluctuations caused by titration of ozone by oxides of nitrogen from nearby mobile and residential sources. Measured concentrations at this site are o ften similar to those recorded at Paso Robles and are some of the highest in the SLAMS network. The hi ghest ozone concentrations at Atascadero occur when high pressure over the interior southwes t U.S. causes transport of ozone and other pollutants into SLO County from the east. Under thes e infrequent conditions transported ozone enhanced by local pollutants can cause highly eleva ted concentrations. The prevailing West or Northwest winds from the coast help keep ozone leve ls at Atascadero low most of the time.

Paso Robles – Operated by ARB since 1974, this population-orie nted urban scale ozone monitor provides a representative ozone concentration for t he suburban areas of the City of Paso Robles. The conditions under which elevated ozone levels oc cur and the location’s prevailing winds are similar to Atascadero.

Morro Bay – Operated since 1975 by SLOAPCD, this site provides regional scale and General/Background ozone monitoring. Located in dow ntown Morro Bay, the monitor generally measures background levels of ozone from the predom inant northwest winds blowing off of the Pacific Ocean. Under unusual meteorological conditi ons, the site can record elevated ozone concentrations transported from urban areas as far south as the Los Angeles basin.

San Luis Obispo – Operated by ARB since 1970, this population-orie nted, neighborhood scale ozone monitor provides a representative ozone concentrati on for the City of San Luis Obispo. The monitor is located in the urban area where ozone concentrat ions are significantly affected by the process of depletion by titration with local mobile and statio nary NOx sources. As a result the concentrations recorded here are often lower than at Morro Bay.

Nipomo Regional Park – Operated by SLOAPCD since 1998, this station prov ides monitoring of background levels of ozone on a regional scale. Pre viously (1979 to 1996) ozone had been monitored in Nipomo on Wilson Street (06-79-4001), several miles away. The ozone concentrations measured at NRP are representative of interior port ions of the Nipomo Mesa and are the highest recorded in the coastal region of San Luis Obispo Co unty.

Red Hills – Operated by SLOAPCD since 2000, this station is l ocated on the summit of the Red Hills near the community of Shandon at an elevation of ab out 2000 feet. This regional scale site is often influenced by ozone transport from outside of the c ounty, and consistently records the highest and most persistent ozone concentrations in the network ; its site type is thus Regional Transport and Maximum Concentration. In early 2012, the eastern p ortion of the county was designated as marginally non-attainment for the federal 8-hr ozon e standard based on the design value from this
site.SLOAPCD 2013 Network Plan 

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Carrizo Plains – Operated by SLOAPCD since January 2006, this stat ion monitors background levels and ozone transport on a regional scale. The monito r is located in an outbuilding at the Carrizo Plains School. The ozone concentrations recorded he re are second only to Red Hills in concentration and persistence.

As noted in Table 2, below, the SLAMS site types emp loyed by the existing ozone network are:

1) Highest Concentration – The Red Hills station ty pically records the highest ozone concentrations in the county. The high ozone levels tend to occur in the interior areas of the county during summer, either following long periods of wind stagnation, or as a result of offshore winds which can transport pollutants from interior regions to the northeast. 2) High Population Exposure – The Paso Robles, Atas cadero and San Luis Obispo monitors provide a good representation of the ozone levels i n the major cities of the county. 3) Source Impact – Because ozone is a secondary pol lutant the effect of emissions from any single source are experienced 5 to 7 hours later an d often many miles distant. As a regional pollutant, monitoring for specific sources of ozone is not performed. 4) General/Background – The monitors at Morro Bay, Carrizo Plains and Nipomo Regional Park provide regional background ozone levels. 5) Regional Transport – The stations located at Car rizo Plains and Red Hills provide excellent surveillance of regional transport of ozone in the interior part of the county. Coastal monitoring stations have provided evidence in the p ast of regional transport of ozone over water from distant urban sources.SLOAPCD 2013 Network Plan 

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### Nitrogen Dioxide Monitoring Network

The SLAMS network in San Luis Obispo County features nitrogen dioxide (NO 2 ) monitors at Atascadero, Morro Bay, and Nipomo Regional Park. NO 2 levels have always been well below the state and federal standards at all locations in our county. For this reason, except in the case of Morro Bay, NO 2 monitoring is most useful here as an indicator of depletion of ambient ozone through titration with nitric oxide. Having at leas t one NO 2 monitor in each geographical region of the county also serves a long-term air quality surv eillance role.

Atascadero – Operated by SLOAPCD since 1990, this population-o riented monitor is considered neighborhood scale. This is the only NO 2 monitor in the Salinas River air basin, and it rec ords the highest NO, NO 2 and NOx levels in the county. The monitor’s locatio n downtown has established a strong diurnal inverse relationship between ozone a nd NO 2 levels caused by local mobile sources and residential and commercial combustion of natura l gas.

Morro Bay

– Operated by SLOAPCD since 2001 this monitor is ne ighborhood scale and monitors emissions from a specific source: the Morro Bay pow er plant, located less than a mile upwind.

Nipomo Regional Park – Operated by the SLOAPCD since 1998, this monitor is regional in scale and is representative of background concentrations on t he Nipomo Mesa. The site’s location in a large natural area away from local or mobile sources make s it ideal for regional surveillance of NO 2 .
The SLAMS monitoring objectives met by the existing NO 2 network are: 1) Highest Concentration – The Atascadero monitor h istorically has measured the highest NO 2 concentrations in the county. NO 2 levels are the result of titration of ambient ozon e by local sources of nitric oxide and as a result values are always relatively low. Levels have never exceeded the 1-hr NO 2 standard (100 ppb), with annual maximum 1-hr conce ntrations typically around 50% of the standard. 2) General/Background – With no significant local s ources present the monitor at Nipomo Regional Park provides an excellent measure of back ground NO 2 levels on the Nipomo Mesa. 3) Source Oriented – The monitor at Morro Bay is pl aced to monitor local impacts of emissions from the Morro Bay Power Plant, the single greatest stationary source of oxides of nitrogen in the county.

Regional Transport and Welfare-Related impacts of N O 2 are not currently addressed by the District’s SLAMS network and are not thought to be significant. San Luis Obispo County, which comprises the San Luis Obispo-Paso Robles MSA, does not have—nor p er Appendix section 4.3 of 40 CFR 58 is it required to have—any NO 2 sites for vulnerable populations, near-road NO 2 monitoring sites, or area-wide NO 2 sites.SLOAPCD 2013 Network Plan- 7 -May 2013Table 2: Ambient Air Quality Parameters Monitoredin San Luis Obispo County in 2011O3NO NO2NOx SO2PM10PM2.5WS WD ATMSLOAPCD StationsAtascadero P P,C P,C P,CP P X X XMorro Bay B S S SX XNipomo Regional Park B B B BBX X XGrover BeachX XMesa2S,C SS X X XCDFS,CS,C X XCarrizo Plains T,BX X XRed Hills T,CX X XARB StationsSan Luis Obispo PP P X X XPaso Robles PPX X XLegend:O3Ozone SO2Sulfur Dioxide WD Wind Direction S Source OrientedNO Nitric Oxide PM10Particulates < 10 microns ATM Ambient TemperatureB General/BackgroundNO2Nitrogen Dioxide PM2.5Particulates < 2.5 microns C Maximum ConcentrationT Regional TransportNOxOxides of NitrogenWS Wind Speed P Population Exposure X Parameter MonitoredSLOAPCD 2013 Network Plan 

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### Sulfur Dioxide Monitoring Network

The sulfur dioxide (SO 2 ) monitoring network in San Luis Obispo County curr ently consists of one
station: Mesa2.

Mesa2 – Operated by the SLOAPCD since 2006, this monitor performs surveillance of a nearby oil refinery. It is considered middle scale and highest concentration for SO 2 . Since it is located close to and downwind of a major source of SO 2 emissions it is representative only of the immediat e locality. The station was sited to optimize surveillance of t he refinery’s nearby coke calciner, which has since been shut down.

The SLAMS SO 2 monitoring objectives met by the network are: 1) Highest Concentration – The monitor at MESA2 cur rently records the highest SO 2 levels in the county. 2) Source Impact – The monitor at MESA2 is invaluab le in determining the SO 2 source impact upon the immediate region.

Monitoring objectives not addressed by the existing SO 2 network are: General/Background, Population, Regional Transport, and Welfare-Related . Historical SO 2 monitoring performed elsewhere in the county (at NRP from 1998-2006; Mor ro Bay, 1979-1995; Grover Beach, 1982-2004; and at decommissioned stations in Arroyo Grande “Ra lcoa” (06-079-1005), 1991-2002, and “Mesa1” (06-079-3002), 1987-94) has provided good evidence that monitoring for these objectives is not needed.

PM 10 and PM 2.5 Particulate Monitoring Network

The particulate monitoring network in San Luis Obisp o County consists of six FEM PM 10 monitors (at Paso Robles, Atascadero, San Luis Obispo, Mesa 2, CD F and Nipomo Regional Park) and four FEM
PM 2.5 monitors (at Atascadero, CDF, Mesa2 and San Luis Ob ispo). The PM 10 network has been in place since 1988, and PM 2.5 samplers began operation in 1999 in response to th e establishment of a new federal standard for PM 2.5 in 1997. Originally all particulate monitoring in t he county was performed as part of ARB’s network, but eventually all monitors except those at Paso Robles and San Luis Obispo became part of the SLOAPCD network, w hich has developed its own processing facilities and operating procedures. Note that, for quality assurance, the District remains part of th e ARB Primary Quality Assurance Organization (PQAO). SLOAPCD therefore relies on ARB to perform federally required audits of its particulate monito rs and to meet federal collocation requirements.

Initially, all particulate sampling was conducted b y the manual FRM method. With the advent of continuous monitoring technologies, all the FRM mon itors in SLO County have been replaced with FEM BAM 1020 monitors in the last few years. These are continuous semi-real time monitors that report hourly PM concentrations all year long. The hourly data has greatly improved the SLOAPCD abilities to issue timely air quality forecast whic h is a significant benefit for the advancement of public health goals.

Paso Robles – Operated by ARB since 1991 this PM 10 monitor is urban in scale and representative of the city of Paso Robles. The FRM sampler at this si te was replaced with an FEM BAM 1020 PM 10 sampler in August 2009.SLOAPCD 2013 Network Plan 

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Atascadero – Operated by SLOAPCD, PM 10 monitoring has been conducted here since 1988, ini tially via an FRM and currently with an FEM BAM 1020 conti nuous monitor. Collocated FRM PM 2.5 monitors began operation in 1999 and have since bee n replaced by a single FEM BAM 1020. All monitors are neighborhood in scale and representati ve of particulate concentrations in the city of Atascadero.

San Luis Obispo – Operated by ARB, a PM 10 sampler has been in place since 1988, and the PM 2.5 sampler since 1999. ARB replaced the FRM samplers w ith continuous FEM BAM instruments in 2011. These population-oriented monitors are neighborhood in scale and represent particulate concentrations in the City of San Luis Obispo.

Mesa2 – Operated by the SLOAPCD since 2006, this site ini tially featured collocated FRM PM 10 samplers that were replaced by a single FEM BAM 102 0 PM 10 monitor in 2009. An FEM BAM 1020
PM 2.5 monitor was installed at the same time. This site monitors source impacts from the nearby oil refinery and coastal dunes and is neighborhood scal e. These monitors record some of the highest particulate levels in the county and are strongly i nfluenced the extensive coastal sand dunes and the Oceano Dunes State Vehicular Recreation Area (ODSVR A) located upwind.

CDF – Originally established for the Nipomo Mesa Phase 2 Particulate Study, this site has become a permanent part of our SLAMS particulate network. Th e site features FEM BAM 1020 samplers for
PM 10 and PM 2.5 , which are neighborhood in scale and measure source impacts from the ODSVRA. In 2012, extensive temporary monitoring on the Nipomo Mesa downwind of the ODSVRA confirmed that this site is located within the 1 square mile sector of the study area that experiences the highe st PM 10 levels. See http://slocleanair.org/communitymonitoringproject for details.

Nipomo Regional Park – Operated at this location by SLOAPCD since 1998, it replaced a site at Wilson Street in Nipomo that operated from 1990-96. The 1-in-6 day FRM PM 10 sampler was replaced with an FEM BAM 1020 continuous PM 10 sampler in 2010. The monitor is regional in scale and is representative of PM 10 concentrations on the Nipomo Mesa.

Statement Regarding Review of Changes to the PM 2.5 Network In the event that SLOAPCD needed to change the locat ion of a PM 2.5 monitor that recorded violations of the NAAQS, the agency would notify EP A Region 9 and ARB contact points immediately, and work closely with ARB to formulate a plan for m oving the site. The public would be notified of the plan and provided with an opportunity to commen t of at least 30 days. Finally, the agency would submit formal notification to EPA. SLOAPCD intends to discuss and receive approval of any changes
to our PM 2.5 Network—whether they affect monitors violating NAA QS or not—with ARB and EPA prior to making them, however unforeseen circumstan ces (e.g. unexpected loss of site access) may preclude this.

Other Networks

San Luis Obispo County, which comprises the San Luis Obispo-Paso Robles MSA, is not required to have—nor does it have—any NCORE, PAMS, lead, or car bon monoxide monitoring stations.SLOAPCD 2013 Network Plan 

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### 2.3 Air Quality Data

All of the ambient air monitoring stations in the c ounty are registered with the USEPA and ARB and regularly report data to the EPA’s AIRS/AQS databas e and ARB’s AQMIS2 website. Validated data is submitted to AQS no later than the end of the quart er following the quarter in which it was collected. The data generated at these stations are public information and are available in various formats. Table 3, below, lists some popular sources for this air quality data.

SLOAPCD, and when applicable ARB, regularly submit t o AQS precision and accuracy data for all gaseous and particulate pollutants measured in the network. Additionally, in accordance with 40 CFR 58.26, SLOAPCD certifies its AQS dataset for the pre vious year every spring. SLOAPCD submitted a certification package for calendar year 2012 data t o EPA on April 18, 2013.

Table 3: Some Sources of Ambient Air Quality Data

Agency Address For Data Requests Internet address Data Available

San Luis Obispo County APCD 3343 Roberto Court

San Luis Obispo, CA
93401 attn: Karl Tupper www.slocleanair.org/air/data.asp San Luis Obispo County only

CARB P.O. Box 2815

Sacramento, CA
95812 www.arb.ca.gov

www.arb.ca.gov/adam/index.htm

l California Air

Monitoring
Data

US EPA Ariel Rios Building

1200 Pennsylvania Avenue, N.W. Washington, DC 20460 www.epa.gov www.epa.gov/ttn/airs/airsaqs/ind

ex National Air Monitoring
DataSLOAPCD 2013 Network Plan 

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### 2.4 Proposed Network Changes and Improvements

Ozone Monitoring Network: No changes to the ozone monitoring network for are anticipated for 2013-2014.

Nitrogen Dioxide Network: No changes to the nitrogen dioxide monitoring netwo rk for are anticipated for 2013-2014.

Sulfur Dioxide Monitoring Network : No changes to the sulfur dioxide monitoring network for are anticipated for 2013-2014.

Particulate Monitoring Network: No changes to the particulate monitoring network fo r 2013-2014 are anticipated.

Meteorology Monitoring Network: No changes to the particulate monitoring network fo r 2013-2014 are anticipated.

Site Improvements:

1. The ESC 8816 data loggers at stations at Nipomo Reg ional Park, CDF, Mesa2, and—pending funding—Red Hills and Atascadero are scheduled to b e upgraded to ESC/Agilaire 8832 loggers.

2. All sites are scheduled to have high speed internet connections installed, and data retrieval will be upgraded from dial-up communication at 9600 baud to retrieval over the internet via private network.SLOAPCD 2013 Network Plan 

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# 3. Overview of Non-network Monitoring

Frequent exceedences of the California Ambient Air Quality Standard for 24-hour PM 10 (50 Mg/m 3 ) are observed downwind of the ODSVRA on the Nipomo M esa. To address these exceedences, the SLOAPCD Board of Directors approved Coastal Dunes Du st Control Rule 1001. The rule requires, inter alia , the ODSVRA operator (i.e., California State Parks ) to monitor PM 10 levels in at least two locations within the ODSVRA: one downwind of an are a where off-road vehicle activity is allowed, and another downwind of a comparable area where off -road vehicle activity is not allowed. The continuous monitoring is to be performed with FEM m onitors. See http://slocleanair.org/air/pmstudydata.php for details.

California State Parks is currently preparing to pe rform preliminary PM 10 monitoring on the ODSVRA with non-FEM E-BAM monitors. SLOAPCD anticipates tha t the FEM-based PM 10 monitoring required by Rule 1001 will commence during the period review ed in this report, i.e. by December 2014. This monitoring will be conducted solely to comply with Rule 1001, and the monitoring entity will be California State Parks rather than an air quality a gency. Therefore, SLOAPCD does not anticipate that the data obtained will be submitted to AQS or be us ed for federal regulatory decision making



### .SLOAPCD 2013 Network PlanA-1May 2013Appendix A: Minimum Monitoring RequirementsThe SLOAPCD monitoring network meets the minimum monitoring requirements for all criteria pollutants measured as established in 40 CFR 58.Tables A-1 through A-9 list the criteria used to determine compliance with federal regulations.Table A-1: Minimum Monitoring Requirements for Ozone

MSA County Population (Census Year)8-hour Design Value(years)Design Value Site Name(AQS ID) Minimum # of Monitors Required Number of Active Monitors Monitors NeededSan Luis ObispoPaso RoblesSan LuisObispo269,637(2010)79 ppb*(2010-12)Red Hills(06-079-8005)1 7 0* This Design Value is for eastern San Luis Obispo County, which in early 2012 was designated as marginally non-attainment for the 2008 8-hourozone standard. The design value for the rest of thecounty is 66 ppb (2010-12), and the correspondingdesign value site is Paso Robles (06-079-0005).Monitors required for SIP or Maintenance Plan:NoneTable A-2: Minimum Monitoring Requirements for PM2.5SLAMs

MSA County Population (Census Year) Annual Design Value (years) Annual Design Value Site (AQS ID) Daily Design Value (years) Daily Design Value Site Name (AQS ID) Minimum Number of Monitors Required Number of Active Monitors Monitors NeededSan Luis ObispoPaso RoblesSan LuisObispo269,637(2010)8.2 ug/m3(2010-12)Mesa2(06-079-2004)23 ug/m3(2010-12)Mesa2(06-079-2004)0-1 4 0SLOAPCD 2013 Network PlanA-2May 2013Table A-3: Minimum Monitoring Requirements for Continuous PM2.5Monitors

MSA County Population (Census Year) Annual Design Value (years) Annual Design Value Site (AQS ID) Daily Design Value (years) Daily Design Value Site Name (AQS ID) Minimum Number of Monitors Required Number of Active Monitors Monitors NeededSan Luis ObispoPaso RoblesSan LuisObispo269,637(2010)8.2 ug/m3(2010-12)Mesa2(06-079-2004)23 ug/m3(2010-12)Mesa2(06-079-2004)0-1 4 0Monitors required for SIP or Maintenance Plan:NoneTable A-4: Minimum Monitoring Requirements for PM10

MSA County Population (Census Year)Max Concentration(Year)Max Concentration SiteName(AQS ID) Minimum Number of Monitors Required Number of Active Monitors Monitors NeededSan Luis ObispoPaso RoblesSan LuisObispo269,637(2010)180 ug/m3(2012)CDF(06-079-2007)3-4 6 0Monitors required for SIP or Maintenance Plan:NoneSLOAPCD 2013 Network PlanA-3May 2013Table A-5: Minimum Monitoring Requirements for NO2CBSAPopulation(CensusYear)Max AADTcounts(Year)# RequiredNear-roadMonitors# ActiveNearroadMonitors# AdditionalNear-roadMonitorsNeeded# RequiredArea-wideMonitors# ActiveArea-wideMonitors# AdditionalArea-wideMonitorsNeededSan Luis ObispoPaso Robles269,637(2010)68,000(2010)0 0 0 0 3 0Monitors required for SIP or Maintenance Plan:NoneMonitors required for PAMS:NoneEPA Regional Administrator-required monitors per 40CFR 58, App. D 4.3.4:NoneTable A-6: Minimum Monitoring Requirements for SO2CBSACountyPopulation(CensusYear)Total SO2(Inventoryyear)PopulationWeightedEmissionsIndexMinimumNumber ofMonitorsRequiredNumber ofActiveMonitorsNumberofAdditionalMonitorsNeededSan Luis Obispo-PasoRoblesSan LuisObispo269,637(2010)287 tpy*(2008)78* 0 1 0* Value in table is calculated with data from the 2008 National Emissions Inventory (http://www.epa.gov/ttn/chief/net/2008inventory.html).SLOAPCD’s most recent emissions inventory (2009; available athttp://www.slocleanair.org/air/emissions.php) records 3840.5 tpy of SO2emissions, resulting in a PWEI of 1095.Monitors required for SIP or Maintenance Plan:NoneEPA Regional Administrator-required monitors per 40CFR 58, App. D 4.4.3:NoneSLOAPCD 2013 Network PlanA-4May 2013Table A-7: Minimum Monitoring Requirements for COCBSACountyPopulation(CensusYear)Number ofRequired NearRoad MonitorsNumber ofActive NearRoadMonitorsNumberofAdditionalMonitorsNeededSan Luis Obispo-PasoRoblesSan LuisObispo269,637(2010)0 0 0Monitors required for SIP or Maintenance Plan:NoneEPA Regional Administrator-required monitors per 40CFR 58, App. D 4.2.2:NoneTable A-8: Minimum Monitoring Requirements for Pbat NCoreNCore Site Name(AQS ID)CBSACountyPopulation(CensusYear)Number ofRequiredMonitorsNumber ofActiveMonitorsNumberofAdditionalMonitorsNeededN/ASan Luis Obispo-PasoRoblesSan LuisObispo269,637(2010)0 0 0Table A-9: Source Oriented Lead Monitoring (Including Airports)SourceNameAddressPbEmissionsEmissionsInventorySource andData YearDesign ValueNumber ofRequiredMonitorsNumber of ActiveMonitorsNumber of AdditionalMonitors NeededNo Sources N/A N/A N/A N/A 0 0 0Monitors required for SIP or Maintenance Plan:NoneEPA Regional Administrator-required monitors per 40CFR 58, App. D 4.5(c):NoneSLOAPCD 2013 Network Plan -B-1- May 2013



# Appendix B: Collocation Requirements

Particulate monitoring (PM 10 , PM 2.5 , and lead) is subject to the collocation requireme nts described in Appendix A, section 3 of 40 CFR 58. The requirement s apply at the Primary Quality Assurance Organization (PQAO) level, and SLOAPCD is part of th e ARB PQAO. All particulate monitors in San Luis Obispo County are MetOne 1020 continuous FEM BA M instruments (PM 10 method code: 122;
PM 2.5 method code: 170). There are no collocated particu late monitors in the SLOAPCD network but as shown in the Table B-1 (adapted from the 2012 An nual Monitoring Report for Small Districts in California, online at http://www.arb.ca.gov/aqd/amnr/amnr2012.pdf ) the ARB PQAO meets the minimum collocation requirements for its network of PM 2.5 FEM BAM 1020 monitors. This information is one year old, but it remains accurat e to the best of our knowledge. With regard to
PM 10 monitoring, all monitors in the District are conti nuous, and thus there are no collocation requirements. Finally, lead monitoring is not done in the County, and thus there is no collocation requirement.

Table B- 1: Collocation Requirements for PM 2.5

Method Code #

Primary Monitors # Required

Collocated Monitors # Active

Collocated Monitors # Active Collocated FEM

Monitors (same method designation as primary)
170 22 3 4 1SLOAPCD 2013 Network Plan -C-1- May 2013



# Appendix C: Detailed Site Information

This appendix presents detailed site information th e reporting of which is required by federal regulation. Local site name Paso Robles AQS ID (XX-XXX-XXXX) 06-079-0005 GPS coordinates (decimal degrees) 35.61467, -120.65 691 Street Address 235 Santa Fe Ave, Paso Robles County San Luis Obispo Distance to roadways (meters) 118 Traffic count (AADT, year) 22,600 (2005) Groundcover (e.g. asphalt, dirt, sand) Asphalt Representative statistical area name (i.e. MSA, CBS A, other) SAN LUIS OBISPO – PASO ROBLES (MSA) Pollutant, POC Ozone, 1 PM 10 , 2 Parameter code 44201 85101 Basic monitoring objective(s) NAAQS Public info Site type(s) Population Exposure Population Exposure Monitor type(s) SLAMS SLAMS Instrument manufacturer and model API 400E MetOne BAM 1020 Method code 087 122 FRM/FEM/ARM/other FEM FEM Collecting Agency ARB ARB Analytical Lab (i.e. weigh lab, toxics lab, other) N /A N/A Reporting Agency ARB ARB Spatial scale (e.g. micro, neighborhood) Urban Urba n Monitoring start date (MM/DD/YYYY) 09/01/1991 08/10 /2009 Current sampling frequency (e.g. 1:3, continuous) c ontinuous continuous Calculated sampling frequency (e.g. 1:3/1:1) N/A 1: 6 Sampling season (MM/DD-MM/DD) 01/01-12/31 01/01-12/ 31 Probe height (meters) 6.2 5.2 Distance from supporting structure (meters) 2.9 1.9 Distance from obstructions on roof (meters) N/A N/A Distance from obstructions not on roof (meters) N/A N/A Distance from trees (meters) N/A N/A Distance to furnace or incinerator flue (meters) N/ A N/A Distance between collocated monitors (meters) N/A N /A Unrestricted airflow (degrees) 360 360 Probe material for reactive gases (e.g. Pyrex, stai nless steel, Teflon) Teflon N/A

Residence time for reactive gases (seconds) 11.9 N/ A Will there be changes within the next 18 months? (Y/N) N N

Is it suitable for comparison against the annual PM2.5? (Y/N) N/A N/ASLOAPCD 2013 Network Plan -C-2- May 2013

Local site name Paso Robles Frequency of flow rate verification for manual PM samplers N/A N/A

Frequency of flow rate verification for automated P M analyzers N/A bi-weekly

Frequency of one-point QC check for gaseous
instruments daily N/A

Last Annual Performance Evaluation for gaseous parameters (MM/DD/YYYY) 04/16/2013 N/A

Last two semi-annual flow rate audits for PM monitors (MM/DD/YYYY, MM/DD/YYYY) N/A 04/16/2013; 10/31/2012; 04/17/2012

Local site name Grover Beach AQS ID (XX-XXX-XXXX) 06-079-2001 GPS coordinates (decimal degrees) 35.12389, -120.63 222 Street Address 9 Le Sage Drive, Grover Beach County San Luis Obispo Distance to roadways (meters) 10 Traffic count (AADT, year) 100 (estimated) Groundcover (e.g. asphalt, dirt, sand) Cement Representative statistical area name (i.e. MSA, CBS A, other) SAN LUIS OBISPO – PASO ROBLES (MSA) Pollutant, POC None (this is a meteorology-only station)SLOAPCD 2013 Network Plan -C-3- May 2013

Local site name Mesa2 AQS ID (XX-XXX-XXXX) 06-079-2004 GPS coordinates (decimal degrees) 35.02079, -120.56 389 Street Address 1300 Guadalupe Rd., Nipomo County San Luis Obispo Distance to roadways (meters) 36 Traffic count (AADT, year) 5700 (2011) Groundcover (e.g. asphalt, dirt, sand) Vegetated, S and Representative statistical area name (i.e. MSA, CBSA, other) SAN LUIS OBISPO – PASO ROBLES (MSA) Pollutant, POC SO 2 , 1 PM 2.5 , 1 PM 10 , 3 Parameter code 42410 88101 81102 Basic monitoring objective(s) NAAQS NAAQS NAAQS Site type(s) Source Oriented,
Max Concentration Source Oriented Source Oriented

Monitor type(s) SLAMS SLAMS SLAMS Instrument manufacturer and model API T100U MetOne BAM 1020 MetOne BAM

1020 Method code 009 170 122 FRM/FEM/ARM/other FEM FEM FEM Collecting Agency SLOAPCD SLOAPCD SLOAPCD Analytical Lab (i.e. weigh lab, toxics lab, other) N/A N/A N/A

Reporting Agency SLOAPCD SLOAPCD SLOAPCD Spatial scale (e.g. micro, neighborhood) Middle Nei ghborhood Neighborhood Monitoring start date (MM/DD/YYYY) 09/21/2005 05/01 /2009 05/01/2009 Current sampling frequency (e.g. 1:3, continuous) continuous continuous continuous

Calculated sampling frequency (e.g. 1:3/1:1) N/A co ntinuous 1:6 Sampling season (MM/DD-MM/DD) 01/01-12/31 01/01-12/ 31 01/01-12/31 Probe height (meters) 4.8 4.8 4.8 Distance from supporting structure (meters) 1.3 1.3 1.3

Distance from obstructions on roof (meters) N/A N/A N/A Distance from obstructions not on roof (meters) N/A N/A N/A

Distance from trees (meters) N/A N/A N/A Distance to furnace or incinerator flue (meters) N/A N/A N/A

Distance between collocated monitors (meters) N/A N/A N/A

Unrestricted airflow (degrees) 360 360 360 Probe material for reactive gases (e.g. Pyrex, stainless steel, Teflon) Teflon N/A N/A

Residence time for reactive gases (seconds) 8.1 N/A N/A Will there be changes within the next 18 N N NSLOAPCD 2013 Network Plan -C-4- May 2013

Local site name Mesa2 months? (Y/N) Is it suitable for comparison against the annual PM2.5? (Y/N) N/A Y N/A

Frequency of flow rate verification for manual PM samplers N/A N/A N/A

Frequency of flow rate verification for automated PM analyzers N/A Bi-weekly bi-weekly

Frequency of one-point QC check for gaseous instruments daily N/A N/A

Last Annual Performance Evaluation for gaseous parameters (MM/DD/YYYY) 05/14/2013 N/A N/A

Last two semi-annual flow rate audits for PM monitors (MM/DD/YYYY, MM/DD/YYYY) N/A 05/14/2013; 10/30/2012; 5/15/2012 05/14/2013;

10/30/2012: 5/15/2012SLOAPCD 2013 Network Plan -C-5- May 2013

Local site name San Luis Obispo AQS ID (XX-XXX-XXXX) 06-079-2006 GPS coordinates (decimal degrees) 35.25651, -120.66 930 Street Address 3220 South Higuera St., San Luis Obispo County San Luis Obispo Distance to roadways (meters) 30 to South Higuera S t. 424 to US 101 Traffic count (AADT, year) South Higuera St.: 22,52 9 (2006) US 101: 60,500 (2011) Groundcover (e.g. asphalt, dirt, sand) asphalt Representative statistical area name (i.e. MSA, CBSA, other) SAN LUIS OBISPO – PASO ROBLES (MSA) Pollutant, POC O 3 , 1 PM 2.5 , 3 PM 10 , 3 Parameter code 44201 88101 85101 Basic monitoring objective(s) NAAQS NAAQS Public In fo Site type(s) Population Exposure Population

Exposure Population

Exposure Monitor type(s) SLAMS SLAMS SLAMS Instrument manufacturer and model API T400 MetOne B AM 1020 MetOne BAM

1020 Method code 087 170 122 FRM/FEM/ARM/other FEM FEM FEM Collecting Agency ARB ARB ARB Analytical Lab (i.e. weigh lab, toxics lab, other) N/A N/A N/A

Reporting Agency ARB ARB ARB Spatial scale (e.g. micro, neighborhood) Neighborho od Neighborhood Neighborhood Monitoring start date (MM/DD/YYYY) 09/21/2005 09/19 /2005 09/19/2005 Current sampling frequency (e.g. 1:3, continuous) continuous continuous continuous

Calculated sampling frequency (e.g. 1:3/1:1) N/A co ntinuous 1:6 Sampling season (MM/DD-MM/DD) 01/01-12/31 01/01-12/ 31 01/01-12/31 Probe height (meters) 12.8 12.8 12.8 Distance from supporting structure (meters) 1.8 2.0 2.0 Distance from obstructions on roof (meters) N/A N/A N/A Distance from obstructions not on roof (meters) N/A N/A N/A

Distance from trees (meters) N/A N/A N/A Distance to furnace or incinerator flue (meters) N/A N/A N/A

Distance between collocated monitors (meters) N/A N/A N/A

Unrestricted airflow (degrees) 360 360 360 Probe material for reactive gases (e.g. Pyrex, stainless steel, Teflon) Teflon N/A N/A

Residence time for reactive gases (seconds) 5.8 N/A N/A Will there be changes within the next 18 N N NSLOAPCD 2013 Network Plan -C-6- May 2013

Local site name San Luis Obispo months? (Y/N) Is it suitable for comparison against the annual PM2.5? (Y/N) N/A Y N/A

Frequency of flow rate verification for manual PM samplers N/A N/A N/A

Frequency of flow rate verification for automated PM analyzers N/A Bi-weekly bi-weekly

Frequency of one-point QC check for gaseous instruments daily N/A N/A

Last Annual Performance Evaluation for gaseous parameters (MM/DD/YYYY) 04/16/2013 N/A N/A

Last two semi-annual flow rate audits for PM monitors (MM/DD/YYYY, MM/DD/YYYY) N/A 04/16/2013; 10/31/2012; 04/17/2012 04/16/2013;

10/31/2012; 04/17/2012SLOAPCD 2013 Network Plan -C-7- May 2013

Local site name CDF AQS ID (XX-XXX-XXXX) 06-079-2007 GPS coordinates (decimal degrees) 35.04676, -120.58777 Street Address 2391 Willow Rd., Arroyo Grande County San Luis Obispo Distance to roadways (meters) 46 Traffic count (AADT, year) 5,700 (2011) Groundcover (e.g. asphalt, dirt, sand) Vegetated, Sand Representative statistical area name (i.e. MSA, CBS A, other) SAN LUIS OBISPO – PASO ROBLES (MSA) Pollutant, POC PM 2.5 , 1 PM 10 , 2 Parameter code 88101 81102 Basic monitoring objective(s) NAAQS NAAQS Site type(s) Max Concentration, Source Oriented Max Concentration, Source Oriented Monitor type(s) SLAMS SLAMS Instrument manufacturer and model MetOne BAM 1020 M etOne BAM
1020 Method code 170 122 FRM/FEM/ARM/other FEM FEM Collecting Agency SLOAPCD SLOAPCD Analytical Lab (i.e. weigh lab, toxics lab, other) N /A N/A Reporting Agency SLOAPCD SLOAPCD Spatial scale (e.g. micro, neighborhood) Neighborho od Neighborhood Monitoring start date (MM/DD/YYYY) 08/28/2010 08/28 /2010 Current sampling frequency (e.g. 1:3, continuous) c ontinuous continuous Calculated sampling frequency (e.g. 1:3/1:1) contin uous 1:1 Sampling season (MM/DD-MM/DD) 01/01-12/31 01/01-12/ 31 Probe height (meters) 4.0 4.0 Distance from supporting structure (meters) 1.4 1.4 Distance from obstructions on roof (meters) N/A N/A Distance from obstructions not on roof (meters) N/A N/A Distance from trees (meters) N/A N/A Distance to furnace or incinerator flue (meters) N/ A N/A Distance between collocated monitors (meters) N/A N /A Unrestricted airflow (degrees) 360 360 Probe material for reactive gases (e.g. Pyrex, stai nless steel, Teflon) N/A N/A

Residence time for reactive gases (seconds) N/A N/A Will there be changes within the next 18 months? (Y /N) N N Is it suitable for comparison against the annual PM 2.5? (Y/N) Y N/A

Frequency of flow rate verification for manual PM samplers N/A N/A

Frequency of flow rate verification for automated P M analyzers bi-weekly bi-weeklySLOAPCD 2013 Network Plan -C-8- May 2013

Local site name CDF Frequency of one-point QC check for gaseous instrum ents N/A N/A Last Annual Performance Evaluation for gaseous parameters (MM/DD/YYYY) N/A N/A

Last two semi-annual flow rate audits for PM monitor s (MM/DD/YYYY, MM/DD/YYYY) 05/15/2013; 10/30/2012;
05/16/2012 05/15/2013;

10/30/2012;
05/16/2012SLOAPCD 2013 Network Plan -C-9- May 2013

Local site name Morro Bay AQS ID (XX-XXX-XXXX) 06-079-3001 GPS coordinates (decimal degrees) 35.36639, -120.84 260 Street Address 899 Morro Bay Blvd., Morro Bay County San Luis Obispo Distance to roadways (meters) 20 to Morro Bay Blvd.
221 to CA 1 Traffic count (AADT, year) Morro Bay Blvd.: 12,400 (2006) CA 1: 23,000 (2011) Groundcover (e.g. asphalt, dirt, sand) Paved Representative statistical area name (i.e. MSA, CBS A, other) SAN LUIS OBISPO – PASO ROBLES (MSA) Pollutant, POC O 3 , 1 NO 2 , 1 Parameter code 44201 42602 Basic monitoring objective(s) NAAQS NAAQS Site type(s) General/Background Source Oriented Monitor type(s) SLAMS SLAMS Instrument manufacturer and model API 400A API T200 U Method code 087 099 FRM/FEM/ARM/other FEM FRM Collecting Agency SLOAPCD SLOAPCD Analytical Lab (i.e. weigh lab, toxics lab, other) N /A N/A Reporting Agency SLOAPCD SLOAPCD Spatial scale (e.g. micro, neighborhood) Regional N eighborhood Monitoring start date (MM/DD/YYYY) 01/01/1981 06/01 /2001 Current sampling frequency (e.g. 1:3, continuous) c ontinuous continuous Calculated sampling frequency (e.g. 1:3/1:1) N/A N/ A Sampling season (MM/DD-MM/DD) 01/01-12/31 01/01-12/ 31 Probe height (meters) 4.0 4.0 Distance from supporting structure (meters) 1.0 1.0 Distance from obstructions on roof (meters) N/A N/A Distance from obstructions not on roof (meters) N/A N/A Distance from trees (meters) N/A N/A Distance to furnace or incinerator flue (meters) N/ A N/A Distance between collocated monitors (meters) N/A N /A Unrestricted airflow (degrees) 360 360 Probe material for reactive gases (e.g. Pyrex, stai nless steel, Teflon) Teflon Teflon

Residence time for reactive gases (seconds) 7.4 8.6 Will there be changes within the next 18 months? (Y /N) N N Is it suitable for comparison against the annual PM 2.5? (Y/N) N/A N/A

Frequency of flow rate verification for manual PM samplers N/A N/A

Frequency of flow rate verification for automated P M analyzers N/A N/ASLOAPCD 2013 Network Plan -C-10- May 2013

Local site name Morro Bay Frequency of one-point QC check for gaseous
instruments Daily Daily

Last Annual Performance Evaluation for gaseous parameters (MM/DD/YYYY) 06/13/2012 (Anticipated 6/12/13) 06/13/2012

(Anticipated 6/12/13) Last two semi-annual flow rate audits for PM monitor s (MM/DD/YYYY, MM/DD/YYYY) N/A N/ASLOAPCD 2013 Network Plan -C-11- May 2013

Local site name Nipomo Regional Park AQS ID (XX-XXX-XXXX) 06-079-4002 GPS coordinates (decimal degrees) 35.03150, -120.50101

Street Address W. Tefft St. and Pomeroy Rd., Nipomo County San Luis Obispo Distance to roadways (meters) 246 Traffic count (AADT, year) 11,000 (2006) Groundcover (e.g. asphalt, dirt, sand) Vegetated

Representative statistical area name (i.e. MSA, CBSA, other) SAN LUIS OBISPO – PASO ROBLES (MSA) Pollutant, POC O 3 , 1 NO 2 , 1 PM 10 , 2 Parameter code 44201 42602 81102 Basic monitoring objective(s) NAAQS NAAQS NAAQS Site type(s) General/Background General/Background General/Background Monitor type(s) SLAMS SLAMS SLAMS Instrument manufacturer and model API 400 API 200 MetOne BAM 1020

Method code 087 099 122 FRM/FEM/ARM/other FEM FRM FEM Collecting Agency SLOAPCD SLOAPCD SLOAPCD Analytical Lab (i.e. weigh lab, other) N/A N/A N/A

Reporting Agency SLOAPCD SLOAPCD SLOAPCD Spatial scale (e.g. micro, neighborhood) Regional Regional Regional

Monitoring start date (MM/DD/YYYY) 11/01/1998 11/01/1998 05/26/2010

Current sampling frequency (e.g. 1:3, continuous) continuous continuous continuous

Calculated sampling frequency (e.g. 1:3/1:1) N/A N/A 1:6

Sampling season (MM/DDMM/DD) 01/01-12/31 01/01-12/31 01/01-12/31

Probe height (meters) 4.0 4.0 4.0 Distance from supporting structure (meters) 1.0 1.0 1.0

Distance from obstructions on roof (meters) N/A N/A N/A

Distance from obstructions not on roof (meters) N/A N/A N/A

Distance from trees (meters) N/A N/A N/A Distance to furnace or incinerator flue (meters) N/A N/A N/A

Distance between collocated monitors (meters) N/A N/A N/ASLOAPCD 2013 Network Plan -C-12- May 2013

Local site name Nipomo Regional Park Unrestricted airflow (degrees) 360 360 360 Probe material for reactive gases (e.g. Pyrex, stainless steel, Teflon) Teflon Teflon N/A

Residence time for reactive gases (seconds) 8.4 7.4 N/A

Will there be changes within the next 18 months? (Y/N) N N N

Is it suitable for comparison against the annual PM2.5? (Y/N) N/A N/A N/A

Frequency of flow rate verification for manual PM samplers N/A N/A N/A

Frequency of flow rate verification for automated PM analyzers N/A N/A bi-weekly

Frequency of one-point QC check for gaseous instruments daily daily N/A

Last Annual Performance Evaluation for gaseous parameters (MM/DD/YYYY) 05/15/2013 05/15/2013 N/A

Last two semi-annual flow rate audits for PM monitors (MM/DD/YYYY, MM/DD/YYYY) N/A N/A 05/15/2013; 10/30/2012; 05/16/2012SLOAPCD 2013 Network Plan -C-13- May 2013

Local site name Atascadero AQS ID (XX-XXX-XXXX) 06-079-8001 GPS coordinates (decimal degrees) 35.49153, -120.66 799 Street Address 6005 Lewis Ave., Atascadero, CA County San Luis Obispo Distance to roadways (meters) 68 to Lewis Ave.
398 to US 101 Traffic count (AADT, year) Lewis Ave.: 1,000 (estimated) US 101: 57,000 (2011) Groundcover (e.g. asphalt, dirt, sand) Paved Representative statistical area name (i.e. MSA, CBSA, other) SAN LUIS OBISPO – PASO ROBLES (MSA) Pollutant, POC O 3 , 1 NO 2 , 1 PM 2.5 , 3 PM 10 , 3 Parameter code 44201 42602 88101 81102 Basic monitoring objective(s) NAAQS NAAQS NAAQS NAA QS Site type(s) Population Exposure Population

Exposure Population

Exposure Population

Exposure Monitor type(s) SLAMS SLAMS SLAMS SLAMS Instrument manufacturer and model API T400 API 200A MetOne BAM 1020 MetOne BAM

1020 Method code 087 099 170 122 FRM/FEM/ARM/other FEM FRM FEM FEM Collecting Agency SLOAPCD SLOAPCD SLOAPCD SLOAPCD Analytical Lab (i.e. weigh lab, toxics lab, other) N/A N/A N/A N/A

Reporting Agency SLOAPCD SLOAPCD SLOAPCD SLOAPCD Spatial scale (e.g. micro, neighborhood) Neighborho od Neighborhood Neighborhood Neighborhood Monitoring start date (MM/DD/YYYY) 10/01/1998 08/01 /1990 05/01/2009 08/28/2010 Current sampling frequency (e.g. 1:3, continuous) continuous continuous continuous continuous

Calculated sampling frequency (e.g. 1:3/1:1) N/A N/A continuous 1:6

Sampling season (MM/DD-MM/DD) 01/01-12/31 01/01-12/ 31 01/01-12/31 01/01-12/31 Probe height (meters) 5.0 5.0 5.8 5.3 Distance from supporting structure (meters) 1.4 1.4 2.2 1.7

Distance from obstructions on roof (meters) N/A N/A N/A N/A

Distance from obstructions not on roof (meters) N/A N/A N/A N/A

Distance from trees (meters) N/A N/A N/A N/A Distance to furnace or incinerator flue (meters) N/A N/A N/A N/A

Distance between collocated monitors (meters) N/A N/A N/A N/A

Unrestricted airflow (degrees) 360 360 360 360 Probe material for reactive gases (e.g. Teflon Tefl on N/A N/ASLOAPCD 2013 Network Plan -C-14- May 2013

Local site name Atascadero Pyrex, stainless steel, Teflon) Residence time for reactive gases (seconds) 6.6 5.8 N/A N/A

Will there be changes within the next 18 months? (Y/N) N N N N

Is it suitable for comparison against the annual PM2.5? (Y/N) N/A N/A Y N/A

Frequency of flow rate verification for manual PM samplers N/A N/A N/A N/A

Frequency of flow rate verification for automated PM analyzers N/A N/A bi-weekly bi-weekly

Frequency of one-point QC check for gaseous instruments daily daily N/A N/A

Last Annual Performance Evaluation for gaseous parameters (MM/DD/YYYY) 06/12/2012 (Anticipated 06/11/13) 06/12/2012

(Anticipated 06/11/13) N/A N/A

Last two semi-annual flow rate audits for PM monitors (MM/DD/YYYY, MM/DD/YYYY) N/A N/A 12/27/2012; 06/12/2012; (Anticipated 06/11/13) 12/27/2012;

06/12/2012; (Anticipated 06/11/13)SLOAPCD 2013 Network Plan -C-15- May 2013

Local site name Red Hills AQS ID (XX-XXX-XXXX) 06-079-8005 GPS coordinates (decimal degrees) 35.64366, -120.23 134 Street Address 3601 Gillis Canyon Rd., Shandon County San Luis Obispo Distance to roadways (meters) 1720 Traffic count (AADT, year) 20 (estimated) Groundcover (e.g. asphalt, dirt, sand) Vegetated Representative statistical area name (i.e. MSA, CBS A, other) SAN LUIS OBISPO – PASO ROBLES (MSA) Pollutant, POC O 3 , 1 Parameter code 44201 Basic monitoring objective(s) NAAQS Site type(s) Regional Transport, Max Concentration Monitor type(s) SLAMS Instrument manufacturer and model API 400A Method code 087 FRM/FEM/ARM/other FEM Collecting Agency SLOAPCD Analytical Lab (i.e. weigh lab, toxics lab, other) N /A Reporting Agency SLOAPCD Spatial scale (e.g. micro, neighborhood) Regional Monitoring start date (MM/DD/YYYY) 7/1/2000 Current sampling frequency (e.g. 1:3, continuous) c ontinuous Calculated sampling frequency (e.g. 1:3/1:1) N/A Sampling season (MM/DD-MM/DD) 01/01-12/31 Probe height (meters) 4.7 Distance from supporting structure (meters) 1.2 Distance from obstructions on roof (meters) N/A Distance from obstructions not on roof (meters) N/A Distance from trees (meters) N/A Distance to furnace or incinerator flue (meters) N/ A Distance between collocated monitors (meters) N/A Unrestricted airflow (degrees) 360 Probe material for reactive gases (e.g. Pyrex, stai nless steel, Teflon) Teflon

Residence time for reactive gases (seconds) 10.3 Will there be changes within the next 18 months? (Y/N) N

Is it suitable for comparison against the annual PM2.5? (Y/N) N/A

Frequency of flow rate verification for manual PM samplers N/A

Frequency of flow rate verification for automated P M analyzers N/A

Frequency of one-point QC check for gaseous DailySLOAPCD 2013 Network Plan -C-16- May 2013

Local site name Red Hills
instruments Last Annual Performance Evaluation for gaseous parameters (MM/DD/YYYY) 6/14/2012 (Anticipated 6/13/2013) Last two semi-annual flow rate audits for PM monitor s (MM/DD/YYYY, MM/DD/YYYY) N/ASLOAPCD 2013 Network Plan -C-17- May 2013

Local site name Carrizo Plains AQS ID (XX-XXX-XXXX) 06-079-8006 GPS coordinates (decimal degrees) 35.35474, -120.04 013 Street Address 9640 Carrizo Highway, California Valley County San Luis Obispo Distance to roadways (meters) 38 Traffic count (AADT, year) 420 (2011) Groundcover (e.g. asphalt, dirt, sand) Vegetated Representative statistical area name (i.e. MSA, CBS A, other) SAN LUIS OBISPO – PASO ROBLES (MSA) Pollutant, POC O 3 , 1 Parameter code 44201 Basic monitoring objective(s) NAAQS Site type(s) Regional Transport, General/Background Monitor type(s) SLAMS Instrument manufacturer and model API 400A Method code 087 FRM/FEM/ARM/other FEM Collecting Agency SLOAPCD Analytical Lab (i.e. weigh lab, toxics lab, other) N /A Reporting Agency SLOAPCD Spatial scale (e.g. micro, neighborhood) Regional Monitoring start date (MM/DD/YYYY) 1/1/2006 Current sampling frequency (e.g. 1:3, continuous) c ontinuous Calculated sampling frequency (e.g. 1:3/1:1) N/A Sampling season (MM/DD-MM/DD) 01/01-12/31 Probe height (meters) 4.6 Distance from supporting structure (meters) 1.0 Distance from obstructions on roof (meters) N/A Distance from obstructions not on roof (meters) N/A Distance from trees (meters) N/A Distance to furnace or incinerator flue (meters) N/ A Distance between collocated monitors (meters) N/A Unrestricted airflow (degrees) 360 Probe material for reactive gases (e.g. Pyrex, stai nless steel, Teflon) Teflon

Residence time for reactive gases (seconds) 2.7 Will there be changes within the next 18 months? (Y/N) N

Is it suitable for comparison against the annual PM2.5? (Y/N) N/A

Frequency of flow rate verification for manual PM samplers N/A

Frequency of flow rate verification for automated P M analyzers N/A

Frequency of one-point QC check for gaseous DailySLOAPCD 2013 Network Plan -C-18- May 2013

Local site name Carrizo Plains
instruments Last Annual Performance Evaluation for gaseous parameters (MM/DD/YYYY) 6/14/2012 (Anticipated 6/13/2013) Last two semi-annual flow rate audits for PM monitor s (MM/DD/YYYY, MM/DD/YYYY) N/A