### M ARYLAND 

### D EPARTMENT OF THE 

### E NVIRONMENT 1800 Washington Boulevard | Baltimore, MD 21230 | www.mde.state.md.us 

## D EPARTMENT OF THE 

## E NVIRONMENT 

# AMBIENT AIR MONITORING NETWORK PLAN FOR CALENDAR YEAR 2011

Prepared for: 

## U.S. Environmental Protection Agency

Prepared by: 

## Ambient Air Monitoring Program Air and Radiation Administration Management Maryland Department of the Environment

May 27, 2010

410-537-3000 | 800-633-6101 | TTY Users: 800-735-2258 Martin O’Malley, Governor | Anthony G. Brown, Lt. Governor | Shari T. Wilson, SecretaryAmbient Air Monitoring Network Plan for Calendar Year 2011 Version: 1.2 

### 2 

# This page is intentionally blank.

### TABLE OF CONTENTS

Section Page

1. ..................................................................................................................7 INTRODUCTION

2. ...........................9 REQUIREMENTS FOR MONITORING NE TWORK DESCRIPTIONS

3. .................................................................9 MARYLAND AIR MONITORING NETWORK
3.1 ....................................................................................................11 General Information

4. ........21 SPECIFIC POLLUTANT NETWORK DESCRIPTIONS AND REQUIREMENTS
4.1 .....................21 Carbon Monoxide (CO) – General D escription and Sampling Method
4.1.1 ...............................................................................21 Monitoring Requirements
4.1.2 ...........................................................................................................22 Sources
4.1.3 ....................................................................22 Changes Planned for 2010-2011
4.2 ................................................................................22 Lead (Pb) – General Description
4.2.1 ...............................................................................22 Monitoring Requirements
4.2.2 ...........................................................................................................22 Sources
4.2.3 ....................................................................23 Changes Planned for 2010-2011
4.3 ....................23 Nitrogen Dioxide (NO ) – General Description and Sampling Method 2 

### 4.3.1 ...............................................................................23 Monitoring Requirements
4.3.2 ...........................................................................................................23 Sources
4.3.3 ....................................................................23 Changes Planned for 2010-2011
4.4 .........................................23 Ozone (O ) – General Description and Sampling Method 3 

### 4.4.1 ...............................................................................24 Monitoring Requirements
4.4.2 ...........................................................................................................24 Sources
4.4.3 ....................................................................24 Changes Planned for 2010-2011
4.5 ...................................................25 PM – General Description and Sampling Method 10 

### 4.5.1 ...............................................................................25 Monitoring Requirements
4.5.2 ...........................................................................................................25 Sources
4.5.3 ....................................................................25 Changes Planned for 2010-2011
4.6 .........25 Fine Particulate Matter (PM ) – General Description and Sampling Method 2.5 

### 4.6.1 ...............................................................................26 Monitoring Requirements
4.6.2 ...........................................................................................................26 Sources
4.6.3 ....................................................................27 Changes Planned for 2010-2011
4.7 .........................27 Sulfur Dioxide (SO ) – General Descripti on and Sa mpling Method 2 

### 4.7.1 ...............................................................................27 Monitoring Requirements
4.7.2 ...........................................................................................................28 Sources
4.7.3 ....................................................................28 Changes Planned for 2010-2011
4.8
................................................................................................28 PAMS (Photochemical Assessment Monito ring Stations) – General Description
and Sam pling Method
4.8.1 ...............................................................................28 Monitoring Requirements
4.8.2 .....................................................................................29 Monitoring Locations
4.8.3 ...........................................................................................................29 Sources
4.8.4 ....................................................................29 Changes Planned for 2010-2011
4.9 ..........................................29 Air Toxics – General Description and Sampling Method

Ambient Air Monitoring Network Plan for Calendar Year 2011 Version: 1.2 

### 3Ambient Air Monitoring Network Plan for Calendar Year 2011 Version: 1.2 

### 4 4.9.1 ...............................................................................30 Monitoring Requirements
4.9.2 .....................................................................................30 Monitoring Locations
4.9.3 ...........................................................................................................30 Sources
4.9.4 ....................................................................30 Changes Planned for 2010-2011
4.10 .................................................30 NCore – General Description and Sampling Method
4.10.1 ...............................................................................31 Monitoring Requirements
4.10.2 .....................................................................................32 Monitoring Locations
4.10.3 ...........................................................................................................32 Sources
4.10.4 ....................................................................32 Changes Planned for 2010-2011
4.11 ....................................32 The Rural Aerosol Intensive Network – General Description
4.11.1 ...............................................................................32 Monitoring Requirements
4.11.2 .....................................................................................32 Monitoring Locations
4.11.3 ...........................................................................................................33 Sources
4.11.4 ..................................................................33 Changes Planned for 2010 – 2011
APPENDIX A – TOPOGRAPHIC AND AERIAL MAPS .......................................................... 33

### ACRONYMS AND DEFINITIONS

AQS Air Quality System. AQS ID 9-digit site identifica tion number in AQS database.
ARMA MDE’s Air and Radiatio n Management Administration BAM/BAMM Beta Attenuation [Mass] Monito r typically used for measuring continuous particulate matter.
CAA Clean Air Act
CAAA Clean Air Act Amendments
CBSA Core Based Statistical Area CFR Code of Federal Regulations
CSA Combined Statistical Area CSN Chemical Speciation Network
CO Carbon Monoxide EGU Electrical Generating Unit FEM Federal Equivalent Method typically us ed by local and state agency to measure particulate matter and determ ine NAAQS attainment status.
FID Flame Ionization Detector FRM Federal Reference Method typically us ed by local and state agency to measure particulate matter and determ ine NAAQS attainment status. GC Gas Chromatograph
HAPS Hazardous Air Pollutants IMPROVE Interagency Monitoring of Protected Visual Environments IR Infrared (radiation) MDE Maryland Department of the Environment MSA Metropolitan Statistical Ar ea typically used by the EPA to study air quality trends in major metropolitan areas across the U.S.
NAA Non-attainment Area NAAQS National Ambient Air Quality Standards used for determining attainment status. NCore National Core multi-pollutant monitoring stations
NESCAUM Northeast States for C oordinated Air Use Management nm Nanometer, an SI unit for m easuring length; 1 nm equals 10 -9 

### meter. NO Nitrogen Oxide
NO 2 

### Nitrogen Dioxide
NO
x 

### Oxides of Nitrogen (ozone precursor)
NO y 

### Total Reactive Nitrogen Species (ozone precursor)
O 3 

### Ozone OC/EC Organic Carbon/Elemental Carbon PAMS Photochemical Assessment Monitoring Station
Pb Lead

PM 2.5 

### Particulate matter with an equivalent diameter less then or equal to 2.5  m. PM 10 

### Particulate matter with an equivalent diameter less then or equal to 10  m. QA Quality Assurance
RAIN RURAL AEROSOL INSTENSIVE NETWORK 

### SIP State Implementation Plan SLAMS State or Local Air Monitoring Stations

Ambient Air Monitoring Network Plan for Calendar Year 2011 Version: 1.2 

### 5Ambient Air Monitoring Network Plan for Calendar Year 2011 Version: 1.2 

### 6 SO 2 

### Sulfur Dioxide
STN PM 2.5 

### Speciation Trends Network TEOM Tapered Element Oscillating Microbalance

 m Micrometer (10 -6 

### meter) US EPA United States Environmental Protection Agency
UV Ultraviolet VOCs Volatile Organic Compounds

## 1. INTRODUCTION

In 1970, Congress passed the Clean Air Act (C AA) that authorized the Environmental Protection Agency (EPA) to establish Nationa l Ambient Air Quality Standards (NAAQS) for pollutants shown to threaten human health and we lfare. Primary standard s were set according to criteria designed to protect public health, including an adequate margin of safety to protect sensitive populations such as children and asth matics. Secondary standards were set according to criteria designed to protect public welfare (decreased visibi lity, damage to crops, vegetation, and buildings, etc.). As part of the CAA, both local and state agencies are required to maintain and operate ambient air quality monitoring networks.

The six pollutants that current ly have NAAQS are: ozone (O 3 

### ), carbon monoxide (CO), sulfur dioxide (SO 2 

### ), nitrogen dioxide (NO 2 

### ), particulate matter (PM 2.5 

### and PM 10 

### ), and lead (Pb). They are commonly called the "criteria" pollutants. When air quality does not meet the NAAQS for one of the crite ria pollutants, the area is said to be in “non-attainment” with the NAAQS for that pollutant. Currently, Maryla nd is designated as non- attainment for both ground-level ozone and particulate matter. Ma ps of non-attainment areas are shown in Figure
1-1 and Figure 1-2 . Counties outside of Maryland are in cluded as they are part of the nonattainm ent area (NAA); however, this documen t will address only monitors in Maryland.

The EPA ozone precursor revisions to the ai r monitoring regulations (40 CFR Part 58) required by Title 1, Section 182 of the 1990 Clean Air Act Amendments (CAAA) were promulgated on February 12, 1993. The CAAA require s that the States incorporate enhanced monitoring for ozone, speciated volatile orga nic compounds (VOCs), oxides of nitrogen (NO
x 

### ), carbonyls, and meteorological parameters into thei r State Implementation Plan (SIP). The Part 58 regulations refer to these enhanced mon itoring stations as photochemical assessment monitoring stations (PAMS). There is no ambient standard for any of the VOCs.

Section 112 of the 1990 Clean Air Act Amendments identified 188 toxics. As part of the monitoring effort for toxics, the Maryland Depa rtment of the Environment (MDE) is operating an Air Toxic Network and provides analytical support for sampling sites in EPA Region 3.

As part of the CAA, states are required to submit an annual network plan to the U.S. EPA for review and approval. Since 2007, EPA has required State and Local Air Pollution Control Agencies to make this plan available for public inspection at least thirty days prior to formal
submission to EPA. Refer to the Requirements for Monitoring Network Descriptions section for
details.

Ambient Air Monitoring Network Plan for Calendar Year 2011 Version: 1.2 

### 7Figure 1-1. Map depicting non-attainment areas for 8-hour ozone in Maryland and surrounding jurisdictions that are part of the NAA.

Figure 1-2. Map depicting non-attainment areas for fine particulate matter (PM 2.5 ) in Maryland and surrounding jurisdictions th at are part of the NAA.

Ambient Air Monitoring Network Plan for Calendar Year 2011 Versi on: 1.2 

### 8

## 2. REQUIREMENTS FOR MONITORI NG NETWORK DESCRIPTIONS

In October 2006, the U.S. EPA issued final re gulations concerning st ate and local agency ambient air monitoring networks. These regulations require an annual monitoring network plan including the information described below.

The annual monitoring network plan as desc ribed in §58.10 must contain the following information for existing and proposed site(s):

 The Air Quality System (AQS) site identification number.

 The location, including street addr ess and geographical coordinates.

 The sampling and analysis method(s) for each measured parameter.

 The operating schedules for each monitor.

 Any proposals to remove or move a monito ring station within a period of 18 months following plan submittal.

 The monitoring objective and spatial representative scale for each monitor.

 The identification of suitable and non-su itable for comparison against the annual
PM 2.5 

### NAAQS as described in §58.30.

 The Metropolitan Statistical Area (MSA), Core Based Statistical Area (CBSA), Combined Statistical Area (CSA) or ot her area represented by the monitor



## 3. MARYLAND AIR MONITORING NETWORK

Maryland currently operates 26 air monitoring sites around the state and measures ground-level concentrations of criteria pollutant s, air toxics, meteorology, and other researchoriented measurements. Although monitoring takes place statewide, most of the stations are concentrated in the urban/industrial areas, wh ich have the highest population and number of pollutant sources. This network is maintain ed and operated by the Ambient Air Monitoring Program (the Program), Air and Radiation Mana gement Administration, Maryland Department of the Environment. A comprehensive air monitoring network map is shown in Figure 3-1

. Additional topographic and aeria l m aps are provided in Appendix A

.

Ambient Air Monitoring Network Plan for Calendar Year 2011 Version: 1.2 

### 9Figure 3-1 Maryland’s air monitoring network map

Note: Piney Run also marks the Frostburg Impr ove site which is just a few meters away. Note: Frostburg Haze Cam is located at Ea stern Garrett Co. Vol. Fire Department.

Ambient Air Monitoring Network Plan for Calendar Year 2011 Versi on: 1.2 

### 10

## 3.1 General Information

The following tables include information re quired as part of the monitoring network description. General information (e.g. site name , AQS identification number, latitude, longitude, etc.) can be found in Table 3-1 . Specific information related to each parameter measured at air monitoring sites is given in Table 3-2 a, b . Monitoring m ethod descriptions can be found in
Table 3-3 . Lastly, parameters measured as part of the air toxics , PAMS, IMPROVE, and speciated PM 2.5 

### mass are listed in Table 3-4

.

Ambient Air Monitoring Network Plan for Calendar Year 2011 Version: 1.2 

### 11Table 3-1 General information for current Maryland ambient air monitoring sites.SITE NAME,AQS IDSTREET ADDRESSCITY,COUNTYZIPCODELATITUDE,LONGITUDELOCATIONSETTINGNEARESTROADTRAFFICCOUNTTRAFFICCOUNTYEARDISTANCEFROMNEARESTRD. (M)CORE BASEDSTATISTICAL AREA(CBSA)Aldino,2402590013560 Aldino RoadAldino,Harford2102839.563333,-76.203889SuburbanAldino Rd.1150200814Baltimore-TowsonBaltimore HazeCam @ BrandonShoresBrandon Shores PowerPlant1000 Brandon Shores Dr.Anne Arundel2122639.181511,-76.537544Suburban----NABladensburg VFD,240330025Bladensburg VolunteerFire Department, 4213Edmonston RoadBladensburg,PrinceGeorge’s2071038.941697, -76.933698SuburbanEdmonstonRoad--155DC-Arlington-AlexandriaCalvert Co,240090011350 Stafford RoadBarstow,Calvert2067838.536722,-76.617194RuralStaffordRoad--53DC-Arlington-AlexandriaDavidsonville,240030014Davidsonville RecreationCenter, 3801 QueenAnne Bridge RoadDavidsonville,Anne Arundel2103538.902500,-76.653056RuralQueen AnneBridge Road--151Baltimore-TowsonEdgewood,240251001Edgewood ChemicalBiological Center (APG),Waehli RoadEdgewood,Harford2101039.410000,-76.296667RuralWaehli Road--16Baltimore-TowsonEssex,240053001600 Dorsey AvenueEssex,Baltimore2122139.310833,-76.474444SuburbanFranklinAvenue20019935Baltimore-TowsonFairhill,2401500034600 Telegraph RoadFairhill, Cecil2192139.701111,-75.860000RuralTelegraphRoad (Route273)8381200826Wilmington, DE-MD-NJFire Dept 20*,245100008Baltimore City FireDepartment,5714 Eastern AvenueBaltimore City2122439.287680,-76.547616SuburbanEasternAvenue(Route 150)21901200845Baltimore-TowsonFrederick Airport,240210037Frederick CountyAirport, 180 E AirportDriveFrederick,Frederick2170139.408056,-77.375833SuburbanDisposalPlan Road519989DC-Arlington-AlexandriaFrostburgHazeCamEastern Garrett Co. Vol.Fire Dept.401 Finzel RoadFinzel,Garrett21532-Rural----NAAmbient Air Monitoring Network Plan for Calendar Year 2011Version: 1.212SITE NAME,AQS IDSTREET ADDRESSCITY,COUNTYZIPCODELATITUDE,LONGITUDELOCATIONSETTINGNEARESTROADTRAFFICCOUNTTRAFFICCOUNTYEARDISTANCEFROMNEARESTRD. (M)CORE BASEDSTATISTICAL AREA(CBSA)Frostburg Improve240239000Frostburg ReservoirFinzel,Garrett2153239.705896, -79.012117RuralPiney RunRoad--1141NAFurley,245100054Furley E.S. RecreationalCenter, 4633 FurleyAvenueBaltimore City2120639.328890,-76.552500Urban andCity CenterFurley Ave.--38Baltimore-TowsonGlen Burnie,240031003Anne Arundel Co PublicWorks BLDG, 7409Baltimore AnnapolisBlvdGlen Burnie,Anne Arundel2106139.169533,-76.627933SuburbanBaltimoreAnnapolisBlvd (Route648).16801200898Baltimore-TowsonHagerstown,24043000918530 Roxbury RoadHagerstown,Washington2174039.565556,-77.721944RuralRoxburyRoad50199349Hagerstown-MartinsburgHU-Beltsville,240330030Howard University’sBeltsville Laboratory,12003 Old BaltimorePikeBeltsville,PrinceGeorge's2070539.055277, -76.878333SuburbanMuirkirkRoad--409D.C., Arlington,AlexandriaMillington,240290002Millington WildlifeManagement Area,Massey-Maryland LineRoad (Route 330)Massey, Kent2165039.305000,-75.797333RuralMarylandLine Road(Route 330)13922008121NANE Police,245100006Northeast Police Station,1900 Argonne DriveBaltimore City2121839.340556,-76.582222SuburbanArgonneDrive--49Baltimore-TowsonNW Police,245100007Northwest Police Station,5271 Reisterstown RoadBaltimore City2121539.344444,-76.685278SuburbanReisterstownRoad16261200826Baltimore-TowsonOldtown,245100040Oldtown Fire Station,1100 Hillen StreetBaltimore City2120239.298056,-76.604722Urban andCity CenterHillen Street15300199023Baltimore-TowsonPadonia,240051007Padonia ElementarySchool, 9834 GreensideDriveCockeysville,Baltimore2103039.460833,-76.631111SuburbanGreensideDrive--93Baltimore-TowsonPG EquestrianCenter, 240338003PG County EquestrianCenter, 14900Pennsylvania Ave.Greater UpperMarlboro,PrinceGeorge's2077238.811940,-76.744170RuralPennsylvania Avenue466512008191D.C., Arlington,AlexandriaPiney Run,240230002Frostburg Reservoir,FinzelFinzel, Garrett2153239.705916,-79.012028RuralPiney RunRoad--1141NAAmbient Air Monitoring Network Plan for Calendar Year 2011Version: 1.213Ambient Air Monitoring Network Plan for Calendar Year 2011Version: 1.214SITE NAME,AQS IDSTREET ADDRESSCITY,COUNTYZIPCODELATITUDE,LONGITUDELOCATIONSETTINGNEARESTROADTRAFFICCOUNTTRAFFICCOUNTYEARDISTANCEFROMNEARESTRD. (M)CORE BASEDSTATISTICAL AREA(CBSA)Rockville,240313001Lathrop E. SmithEnvironmental EducationCenter, 5110Meadowside LaneRockville,Montgomery2085539.114444, -77.106944RuralMeadowsideLane--77DC-Arlington-AlexandriaSouth Carroll,2401300011300 W. Old LibertyRoadWinfield,Carroll2178439.444167,-77.041667RuralLiberty Road(Route 26)109622008248Baltimore-TowsonSouthern Maryland,240170010Oaks RoadHughesville,Charles2062238.504167,-76.811944RuralOaks Road--723DC-Arlington-Alexandria* Fire Dept 20 was called S.E. Police Station in previous reports. It was relocated from the S.E.Police Station site to the fire department next door.Table 3-2a. Parameter information for curren t Maryland ambient ai r monitoring sites

SITE NAME, AQS ID PARAMETER START
DATE METHOD
CODE PROBE
HEIGHT (M) REPRESENTATIVE
SCALE MONITORING
OBJECTIVE TYPE SAMPLE
SCHEDULE

Nitrogen Dioxide, Nitric
Oxide 5/1/1995 075 4 Urban Population

exposure PAMS Every hour

Type 3 PAMS:
Reactive Oxides

of Nitrogen 6/1/1997 075 3.8 Urban Population Exposure PAMS Every hour Aldino,
240259001

Ozone 4/20/1990 047 6 Urban Maximum Ozone
concentration SLAMS Every hour

Baltimore
Haze Cam @

Brandon
Shores Visibility 4/1/2007 NA NA NA Public
Notification NA NA

Bladensburg VFD,
240330025 PM 2.5 1/1/2007 118 4 Neighborhood Population Exposure SLAMS Every 3 days

Calvert Co.,
240090011 Ozone 4/1/2005 047 4 Urban Population Exposure SLAMS Every hour

Davidsonville,

240030014 Ozone 6/6/1980 047 4 Urban Population Exposure SLAMS Every hour

Ozone 3/10/1980 047 3.8 Urban Highest
Concentration SLAMS Every hour Edgewood,
240251001 PM 2.5 1/1/1999 120 2.1 Neighborhood Population Exposure SLAMS Every 3 days

Air toxics 1/1/1993 150 4.0 Neighborhood Population Exposure Toxics Every 6 days

Carbon
Monoxide 4/1/1967 054 4.6 Middle Highest
Concentration SLAMS Every hour

Nitric Oxide 1/1/1993 074 4.6 Neighborhood Maximum
Precursor Emissions Impact SLAMS Every hour

Nitrogen
Dioxide 1/1/1972 074 4.6 Neighborhood Maximum
Precursor Emissions Impact SLAMS Every hour

Oxides of Nitrogen 1/1/1980 074 4.6 Neighborhood Maximum
Precursor Emissions Impact SLAMS Every hour

Ozone 1/1/1972 047 4.6 Neighborhood Population Exposure SLAMS Every hour

Type 2 PAMS:
VOCs 6/1/1996 128/126/102 4.0 Neighborhood Maximum
Precursor Emissions Impact PAMS Every hour, Every 6 days

PM 10 Continuous 4/1/1967 122 4.5 Neighborhood Population Exposure SLAMS Every hour Essex,
240053001

PM 2.5 Chemical Speciation 10/1/2000 810 5 Neighborhood Population Exposure STN Every 3 days

Ambient Air Monitoring Network Plan for Calendar Year 2011 Version: 1.2 

### 15SITE NAME, AQS ID PARAMETER START
DATE METHOD
CODE PROBE
HEIGHT (M) REPRESENTATIVE
SCALE MONITORING
OBJECTIVE TYPE SAMPLE
SCHEDULE

PM 2.5 1/1/1999 120 4.7 Neighborhood Population Exposure SLAMS Every 3 days

Sulfur Dioxide 1/1/1972 060 5 Neighborhood Highest
Concentration SLAMS Every hour

Ozone 1/1/1992 047 4 Urban Regional Transport SLAMS Every hour

PM 2.5 1/1/1999 120 3.7 Regional Regional Background SLAMS Every 3 days Fairhill

PM 2.5 Continuous 6/28/2006 170 3.7 Regional Regional Background SLAMS Every hour

PM 10 total 0-10

μm 3/10/2004 131 13 Neighborhood Population Exposure SLAMS Every 6 days Fire Dept 20,

245100008

PM 2.5 6/20/2001 120 13 Middle Source Oriented SLAMS Every day

Frederick Airport,
240210037 Ozone 7/9/1998 047 3.4 Urban Population Exposure SLAMS Every hour

Frostburg Improve
240239000 IMPROVE
Parameters 3/1/2004 NA 4 Regional Regional Transport Improve Every 3 days

Frostburg
HazeCam Visibility 10/1/2005
- NA NA Public
Notification - NA

Furley,
245100054 Ozone 8/20/2006 047 10 Neighborhood Population Exposure SLAMS Every hour

PM 10 4/11/90 122 2.7 Neighborhood Population Exposure SLAMS Every 6 days Glen Burnie,
240031003 PM 2.5 1/1/1999 118 2.2 Neighborhood Population Exposure SLAMS Every day

PM 2.5 Continuous 5/1/2005 731 4 Urban Highest
Concentration SPM Every hour

Ozone 4/1/1999 047 3.6 Urban Population Exposure Highest
Concentration SLAMS Every hour Hagerstown,
240430009

PM 2.5 4/1/1999 120 2 Neighborhood Highest
Concentration SLAMS Every 3 days

Air toxics 5/10//2006 150 4 Neighborhood Population Exposure Toxics Every 6 days

Nitric Oxide,

Nitrogen Dioxide, and
Reactive Oxides

of Nitrogen 5/28/2008 075 4 Urban General / Background NCore Every hour HU-Beltsville,

2400330030

Ozone 5/1/2005 047 4 Urban Highest
Concentration

Population Exposure NCore Every hour

Ambient Air Monitoring Network Plan for Calendar Year 2011 Version: 1.2 

### 16SITE NAME, AQS ID PARAMETER START
DATE METHOD
CODE PROBE
HEIGHT (M) REPRESENTATIVE
SCALE MONITORING
OBJECTIVE TYPE SAMPLE
SCHEDULE

Type 3 PAMS:
VOCs 5/10/2005 126 4 Urban Upwind Background Unofficial
PAMS Every 6 days, every 3 hours

PM 2.5 7/10/2004 118 2 Urban Population Exposure NCore Every 3 days

PM 2.5 Continuous 9/1/2005 170 2 Urban Population Exposure SLAMS Every hour

PM 2.5 |Chemical Speciation 12/5/2004 810 2 Urban Population Exposure NCore Every 6 days

PM2.5
Elemental & Organic Carbon 2005 NA 4 Urban General / Background NA Every 2
hours

Sulfate (PM 2.5 ) 8/29/2005 NA 4 Urban General / Background NCore Every hour

Trace Carbon

Monoxide 12/20/2006 554 4 Urban General / Background NCore Every hour

Trace Sulfur

Dioxide 9/29/2006 560 4 Urban General / Background NCore Every hour

Ozone 6/19/1989 047 4 Urban Population Exposure SLAMS Every hour Millington,
240290002 PM 2.5 Continuous 1/24/08 731 2 Neighborhood Forecasting SPM Every hour

Air toxics 1/1/1992 150 4 Neighborhood Population Exposure Toxics Every 6 days NE Police,
245100006 PM 2.5 1/1/1999 120 8.8 Neighborhood Population Exposure SLAMS Every day

NW Police,
245100007 PM 2.5 1/1/1999 120 9.7 Neighborhood Population Exposure SLAMS Every 3 days

Air Toxics 1/1/1991 150 4 Middle Population Exposure Toxics Every 6 days

Carbon
Monoxide 1/1/1982 054 4.2 Middle Highest
Concentration SLAMS Every hour

Light Scatter 9/2004 NA 4 NA NA NA Every hour
Nitric Oxide,

Nitrogen Dioxide, and

Oxides of Nitrogen 1/1/1982 074 4.2 Middle Highest
Concentration SLAMS Every hour

PM 2.5 Continuous 4/1/2002 170 4.5 Middle Highest
Concentration SLAMS Every hour Oldtown,
245100040

PM 2.5 1/1/1999 120 4.9 Middle Highest
Concentration SLAMS Every day

Padonia, Ozone 1/1/1979 047 3.8 Neighborhood Population SLAMS Every hour

Ambient Air Monitoring Network Plan for Calendar Year 2011 Version: 1.2 

### 17SITE NAME, AQS ID PARAMETER START
DATE METHOD
CODE PROBE
HEIGHT (M) REPRESENTATIVE
SCALE MONITORING
OBJECTIVE TYPE SAMPLE
SCHEDULE

Exposure

40051007

PM 2.5 1/1/1999 120 4.7 Neighborhood Population Exposure SLAMS Every hour

Ozone 4/1/2002 047 4.4 Urban Population Exposure SLAMS Every hour PG Equestrian Center,
240338003 PM 2.5 5/1/2002 120 4.8 Neighborhood Population Exposure SLAMS Every 3 days

Light Scatter 9/2004 NA 4 NA NA NA Every hour

Nitric Oxide,

Nitrogen Dioxide, and
Reactive Oxides

of Nitrogen 5/1/2004 075 4 Regional Regional Transport NCore Every hour

Trace Carbon

Monoxide 6/1/2004 554 4 Regional Regional Transport NCore Every hour

Ozone 4/1/2004 047 4 Regional Regional transport NCore Every hour

PM 2.5 Continuous 7/1/2004 731 4 Regional Regional transport NCore Every hour

PM2.5
Chemical Speciation (IMPROVE) 2005 NA 4 Regional Regional Transport Improve Every 3 days

PM2.5
Elemental & Organic Carbon 7/2004 NA 4 Regional Regional Transport NA Every 2 hours

Trace SO2 1/1/2007 560 4 Regional Regional Transport NCore Every hour Piney Run,
240230002

Sulfate (PM2.5) 7/1/2004 NA 4 Regional Regional Transport NCore Every hour

Ozone 1/1/1980 047 4 Urban Population Exposure SLAMS Every hour

PM2.5
Continuous 8/22/08 170 4 Neighborhood Population Exposure SLAMS Every hour Rockville,
240313001

PM 2.5 1/1/1999 4.9 Neighborhood Population Exposure SLAMS Every 3 days

South Carroll,

240130001 Ozone 7/14/1983 047 4 Urban Population Exposure SLAMS Every hour

Southern Maryland,
240170010 Ozone 10/2/1984 047 4 Regional General / Background SLAMS Every hour

Note: Based on the air monitoring regulations CFR 40 part 58 7.30 (a) (1), data collected by the PM 2.5 monitor located at Oldtown is representative at the middle scale and will not be compared to the annual PM 2.5 NAAQS of 15

 g/m 3 . Ambient air monitoring sites operate year-round except ozone where noted; Ozone final monitoring rule to be announced by August 2010 would change the season to March through October.

Ambient Air Monitoring Network Plan for Calendar Year 2011 Version: 1.2 

### 18Table 3-2b Parameter counts by site (cross-reference to Table 3-2a)

Parameter

Site NameAir ToxicsCOLight scatterNONO2NOXNOYO3PAMS VOC'sPM2.5PM2.5Elemental &Organic CarbonPM2.5(continuous)PM10PM10(continuous)Speciated PM2.5SO2Sulfate (PM2.5)Trace COTrace SO2TOTALS

Aldino 1 1 1 1 4 Bladensburg 1 1

Calvert Co. 1 1

Davidsonville 1 1 Edgewood 1 1 2

Essex 1 1 1 1 1 1 1 1 1 1 1 11

Fairhill 1 1 1 3

Frederick
Air p ort 1 1

Fire Dept 20 1 1 2
Furley 1 1

Glen Burnie 1 2 1 4 Hagerstown 1 1 1 3

HU-Beltsville 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 16 Millington 1 1 2

NE Police 1 1 2

NW Police 1 1

Oldtown 1 1 1 1 1 1 1 1 1 9

Padonia 1 2 3 PG Equestrian Center 1 2 3

Piney Run 1 1 1 1 1 1 1 1 1 1 1 1 11

Rockville 1 1 1 2

South Carroll 1 1

Southern
M a r y l a n d 1 1

TOTALS 4 4 2 5 5 3 3 17 2 16 3 7 3 2 2 3 2 2 2 86

Note the above table does not include RAIN, Visibility, or IMPROVE monitors; see Ta ble 3-2a and Section 4 for
details about those monitors.

Table 3-3. Monitoring methods and associated AQS codes used in the Maryland ambient air monitoring network.

PARAMETER METHOD
CODE SAMPLE ANALYSIS DESCRIPTION

Air Toxics* 113 Capillary GC ITD Mass Spectrometer

Carbon Monoxide 054 Nondispersive Infrared Photometry
Carbon Monoxide, Trace 554 Nond ispersive Infrared Photometry

Ambient Air Monitoring Network Plan for Calendar Year 2011 Version: 1.2 

### 19PARAMETER METHOD
CODE SAMPLE ANALYSIS DESCRIPTION

Light Scatter NA Open-Air Integrating Nephelometer

N itric Oxide and Nitrogen Dioxide 074 Chemiluminescence

N itric Oxide, Nitrog en Dioxide, and Reactive Oxides Of Nitrogen 075 TECO 42S Chemiluminescence for Low Level Measurements

Oxides Of Nitrogen 074 Chemiluminescence

PAMS VOCs* 128 Gas Chromatograph with Flame; GC FID

PAMS VOCs* 126 Cryogenic Pre-concentration Trap GC/FID

Ozone 047,091 Ultra Violet Photometry

PM 10 Total 0-10 μm 132 Gravimetric, Andersen RAAS 10-300

PM 10 Continuous 731 Beta Attenuation

PM 2.5 120 Gravimetric, Andersen RAAS 2.5-300

PM 2.5 118 Gravimetric, Partisol Plus 2025

PM 2.5 Species* Constituents: Trace
Elements 811 Energy Dispersive XRF using Teflon Filter

PM 2.5 Species* Constituents: Ions 812 Ion Chromatography using Nylon Filter

PM 2.5 Species* Constituents: Organics 813 Using Quartz Filter - Thermo-Optical Transmittance

PM 2.5 Continuous 731 Beta Attenuation

PM 2.5 Speciation Mass 810 Gravimetric, Met One SASS using Teflon

PM 2.5 - Elemental and Organic Carbon NA OCEC, Self-contained Non-disper sive Infrared (NDIR) Detector System.

IMPROVE Parameters* NA 4 Module, Improve Protocol analysis

Sulfur Dioxide 060 Pulsed Fluorescence
Sulfur Dioxide, trace 560 Pulsed Fluorescence

Sulfate-PM 2.5 NA Pulsed Fluorescent w ith High Efficiency SO 4 to SO 2 Converter Visibility NA Camera

*See Table 3-4 for constituents belonging to these groups

Table 3-4 Constituent compounds an d species measured in Maryland.

C ONSTITUENT G ROUP C OMPOUNDS IN THE C ONSTITUENT G ROUP

Air Toxics Dichlorodifluoromethane, Chloromethane, 1,2-Dichloro-1,1,2,2,tetrafluoroleth, Chloroethene, 1,3-Butadiene, Bromomethane, Chloroethane, Trichlorofluoromethane, Acrolein, Acetone, 1,1-Dichloroethene, Methylene Chloride, Carbon disulfide, Isopropyl Alcohol, 1,1,2-Trichloro-1,2,2-trifluoroethane, Trans-1,2-Dichloroethene, 1,1-Dichloroethane, 2-methoxy-2-methyl-Propane, Methyl ethyl Ketone (2-butanone), Cis-1,2-Dichloroethene, Hexane, Chloroform, Ethyl Acetate, Tetr ahydrofuran, 1,2-Dichloroethane, 1,1,1-Trichloroethane, Benzene, Carbon tetrachloride, Cyclohexane, 1,2-Dichloropropane, Bromodichloromethane, Trichloroethylene, Heptane, Cis-1,3-Dichloro-1-Propene, Methyl Isobutyl Ketone, Trans-1,3-Dichloro-1-Propene, 1,1,2-Trichloroethane, Toluene, Dibrochloromethane, Methyl butyl Ketone, (2-Hexanone), 1,2-Dibromoethane, Tetrachloroethylene, Chlorobenzene, Ethyl benzene, m & p- Xylene, Bromoform (Tribromomethane), Styrene, 1,1,2,2- Tetrachloroethane, o-Xylene, 1-Ethyl-4-Methylbenzene, 1,3,5-Trimethylbenzene, 1,2,4- Trimethylbenzene, Benzyl Chloride, 1,3-dichlorobenzene, 1,4-Dichlorobenzene, 1,2-Dichlorobenzene, 1,2,4-Trichlorobenzene, and Hexachloro-1,3-Butadiene

IMPROVE Aerosol light extinction, Aerosol light scattering, Air temperature, Aluminum, Ammonium ion,

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### 20C ONSTITUENT G ROUP C OMPOUNDS IN THE C ONSTITUENT G ROUP

Parameters Ammonium Nitrate, Ammonium sulfate, Arsenic, Bromine, Calcium, Chloride, Chlorine Chromium, Copper, Elemental carbon, Humidity, Hydrogen, Iron, Lead, Magnesium, Manganese, Molybdenum, Nickel, Nitrate, Nitrite, Organic carbon, Phosphorus, PM10, PM2.5, Potassium, Relative Humidity, Rubidium, Selenium, Silicon, Sodium, Strontium, Sulfate, Sulfur Dioxide, Sulfur, Titanium, Vanadium, Zinc, and Zirconium

PAMS VOCs Acetone, Ethane, Acetylene, Propane, 2,2-dimethylbutane, Benzene, i-Butane, n-Butane, i-Pentane, n-Pentane, 2,2,4-trimethylpentane, i-Propylbenzene, n-hexane, 2-methylpentane, 2,3-dimethylbutane, Cyclopentane, Ethylbenzene, n-Propylbenzene, 3-methylpentane, Toluene, Styrene, n-Heptane, 2-methylhexane, 2,4-dimethylpentane, 2,3,4- trimethylpentane, o-Xylene, 3-methylhexane, 2,3-dimethylpentane, Formaldehyde, n-Octane, 2-methylheptane, Cyclohexane, 3-methylheptane, n-Nonane, m&p-Xylenes, Methylcyclohexane, Methylcy clopentane, n-Decane, n-Undecane, Acetaldehyde, 1,2,3-Trimethylbenzene, 1,2,4-Trimethylbenzene, 3-methyl-1-butene, 1-Butene, Propene, 1-Pentene, 1,3,5-Trimethylbenzene, 2-methyl-1-pentene, 2-methyl-2-butene, c-2-hexene, c-2-pentene, c-2-Butene, Cyclopentene, 4-methyl-1-pentene, t-2-hexene, t-2-Butene, t-2-pentene, Isoprene

RAIN Sulfate, EC/OC, light scattering, trace SO2 , trace CO, ozone, continuous PM2.5, surface meteorology, visual scene images - Haze Cam, IMPROVE parameters

Speciated
PM 2.5 Mass Aluminum, Ammonium, antimony, Arsenic, Barium, Bromine, Cadmium, Calcium, Carbonate carbon, Cerium, Cesium, Chlorine, Chromium, Cobalt, Copper, Elemental carbon, Europium, Gallium, Gold, Hafnium, Indium, Iridium, Iron, La nthanum, Lead, Magnesium, Manganese, Mercury, Molybdenum, Nickel, Niobium, Nitrate, OCX, OCX2, Organic carbon, Phosphorus, Pk1_OC, Pk2_OC, Pk3_OC, Pk4_OC, Potassium, PyrolC, Rubidium, Samarium, Scandium, Selenium, Silicon, Silver, Sodium, Strontium, Sulfate, Sulfur, Tantalum, Terbium, Tin, Titanium, Total carbon, Vanadium, Wolfram, Yttrium, Zinc, and Zirconium



## 4. SPECIFIC POLLUTANT NETWORK DESCRIPTIONS AND REQUIREMENTS

4.1 Carbon Monoxide (CO) – General Description and Sampling Method

Carbon monoxide (CO) is measured by infrared absorption photometry. Air is drawn continuously through a sample cell where infrar ed light passes through it. Carbon monoxide molecules in the air absorb part of the infrared light, reducing the intensit y of the light reaching a light sensor. The light is converted into an el ectrical signal related to the concentration of carbon monoxide in the sample cell.

4.1.1 Monitoring Requirements

There is no m inimum requirement for the number of CO monitoring site s. Operation of the existing CO sites in Maryland is required until MDE requests discontinua tion of a site in the Annual Network Plan and the EPA Regional Admi nistrator approves the request. Where CO monitoring is ongoing, at least one site must be a maximum concentration site for that area under investigation.

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### 4.1.2 Sources

Carbon m onoxide is formed when carbon in fuel is not completely burned. The EPA estimates that approximately 60% of all CO emi ssions are from motor vehicle exhaust. Other sources include incinerators, wood stoves, fu rnaces, and some industrial processes. Concentrations are highest along heavily travel ed highways, and decrease significantly the further away the monitor is from traffic. Ther efore, CO monitors are usually located close to roadways or in urban areas.

4.1.3 Changes Planned for 2010-2011

No changes planned.

4.2 Lead (Pb) – General Description

On October 15, 2008 EPA substantially streng thened the national am bient air quality standards (NAAQS) for lead (see 73 FR 66934). EP A revised the level of the primary (healthbased) standard from 1.5 μg/m 3 

### to 0.15 μg/m 3 

### , measured as total susp ended particles (TSP) and revised the secondary (welfare-bas ed) standard to be identical in all respects to the primary
standard.

4.2.1 Monitoring Requirements

In conjunction with strengthe ning the lead NAAQS, EPA identifie d the need for states to improve existing lead monitoring networks by requi ring monitors be placed in areas with sources that emit one ton or more per year (tpy) of l ead by January 1, 2010. MDE, in conjunction with EPA Region III, has reviewed the 2007 lead em issions inventory and found no lead sources with emissions of 1 tpy or greater: hence, no source oriented lead monitors are proposed. However, EPA is proposing to change the lead emissions monitoring threshold from 1 tpy to 0.50 tpy, and proposing to require lead mon itoring at all NCore sites.

4.2.2 Sources

Lead (Pb) is a metal found naturally in the environment as well as in manufactured products. The major sources of lead emissions ha ve historically been motor vehicles (such as cars and trucks) and industrial so urces. As a result of EPA's regulatory efforts to remove lead from gasoline, emissions of lead from the tr ansportation sector dram atically declined by 95 percent between 1980 and 1999, and levels of lead in the air decreased by 94 percent between 1980 and 1999. Today, the highest levels of lead in air are usually found near lead smelters. Other stationary sources are waste incinerators, utilities, lead-acid ba ttery manufacturers and general aviation airports. Soil can pick up lead from exterior paint, or other sources such as past use of leaded gas in cars.

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### 4.2.3 Changes Planned for 2010-2011

To satisfy EPA’s proposed requirements of lead monitoring at NCore sites, MDE will deploy lead monitors at the two Maryland NCore sites. In addition, MD E will address the lead sites with emissions of >0.50 tpy in our 2012 Annual Network Review.

4.3 Nitrogen Dioxide (NO 2 

### ) – General Description and Sampling Method

Nitrogen dioxide (NO 2 

### ) is measured indirectly. First, nitrogen oxide (NO) is measured using the chemiluminescence reaction of nitric oxide (NO) with ozone (O 3 

### ). Air is drawn into a
reaction chamber where it is mixe d with a high concentration of ozone from an internal ozone generator. Any NO in the air r eacts with the ozone to produce NO 2 

### . Light emitted from this reaction is detected with a photomultiplier tube and converted to an el ectrical signal proportional to the NO concentration. Next, total nitrogen oxides (NO
x 

### ) are measured by passing the air through a converter where any NO 2 

### in the air is reduced to NO before the air is passed to the reaction chamber. By alternately passing the ai r directly to the reac tion chamber, and through the converter before the reaction chamber, the analyzer alternately measures NO and NO
x 

### . The
NO 2 

### concentration is equal to the difference between NO
x 

### and NO.

4.3.1 Monitoring Requirements

There is no m inimum requirement for the number of NO 2 

### monitoring sites. Operation of the existing NO 2 

### sites in Maryland is requi red until MDE requests discon tinuation of a site in the Annual Network Plan and the EPA Regional Admi nistrator approves the request. At least one
NO 2 

### monitor must be located to measure regiona l maximum concentration within the geographic area that it represents.

4.3.2 Sources

Oxides of nitrogen are produced during high-te mperature burning of fuels. Sources of
NO
x 

### include motor vehicles and stationary source s that burn fossil fuels such as power plants
and industrial boilers.

4.3.3 Changes Planned for 2010-2011

No changes planned.

4.4 Ozone (O 3 

### ) – General Description and Sampling Method

Ozone (O 3 

### ) is measured by ultravio let absorption photometry. Air is drawn continuously through a sample cell where ultravio let light passes through it. O 3 

### molecules in the air absorb part of the ultraviolet light, reducing the intensity of the light reaching a light sensor. The light is converted into an electrical signal related to the concentration of O 3 

### in the sample cell.

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### 4.4.1 Monitoring Requirements

Within an O 3 

### network, at least one O 3 

### site for each MSA, or CSA if multiple MSAs are involved, must be designed to record the maximu m concentration for that particular metropolitan
area. More than one maximum concentration s ite may be necessary in some areas. The appropriate spatial scales for O 3 

### sites are neighborhood, urban, and regional. Since O 3 

### requires appreciable formation time, the mixing of reactan ts and products occurs over large volumes of air, and this reduces the importance of monitoring small-scale spatial variability. The appropriate spatial scales for O 3 

### sites are neighborhood, urban, and regional.

The prospective maximum concentration monitor site should be selected in a direction from the city that is most likely to observe the highest O 3 

### concentrations, more specifically, downwind during periods of phot ochemical activity. Since O 3 

### levels decrease significantly in the colder parts of the year in many areas, O 3 

### is required to be monito red only during the “ozone season” as designated in the 40 CFR Part 58 A ppendix D, which in Maryland is April 1 through
October 31.

4.4.2 Sources

Ozone is not em itted directly from a pollution source but is formed in the lower atmosphere by the reaction of nitrogen oxides (NO
x 

### ) and volatile organic compounds (VOCs) in the presence of sunlight and warm temperat ures. Sources of nitrogen oxides include automobiles, power plants and other combustion ac tivities. VOCs can come from automobiles, gasoline vapors, and a variety of large and sm all commercial and industrial sources that use chemical solvents, paint thinners , and other chemical compounds. NO
x 

### and VOC’s or “precursors of ozone” can travel for many miles before chemical reactions in the atmosphere
form O 3



### .

4.4.3 Changes Planned for 2010-2011

MDE is in the process of relocating the Sout h Carroll ozone monitor to a site very close
to the o riginal site that better reflects 40CFR sitting criteria. Also, MDE plans to install a new monitoring site at University of Maryland Center for Environmental and Estuarine Studies near Cambridge on Maryland’s Eastern Shore in la te 2010 or early 2011 pending availability of

resources.

MDE is proposing to change the representative scale for Fairhill from regional to urban. In addition, MDE is proposing to change the monitoring objectiv es of the following: Fairhill from background to regional transport, South Carro ll from highest concentration to population exposure, HU-Beltsville will add population exposu re to its list of monitoring objectives, and Hagerstown will add highest concentration to its li st of monitoring objectives; as discussed in the 5-year Network Assessment. These changes will be made effective immediately following approval by the EPA Regional Administrator.

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## 4.5 PM 10 

## – General Descriptio n and Sampling Method

MDE uses both manual gravimetric and automated monitors to measure PM 10 

### mass concentrations in the Maryland network. The PM 10 

### Beta Attenuation Monitor (BAM) automatically measures and records dust concentrat ions with built-in data logging. It uses the principal of beta ray attenuation to provide a simple determination of mass concentration. An external pump pulls a measured amount of air through a filter tape for a one hour period. The filter tape, impregnated with ambient dust, is pla ced between the source and the detector thereby causing the attenuation of the measured beta-parti cle signal. The degree of attenuation of the beta-particle signal is used to de termine the mass concentration of particulate matter on the filter tape and hence the hourly volumetric concentrati on of particulate matter in the ambient air.

Gravimetric samplers draw air through a speci ally designed inlet that excludes particles larger than 10 microns in diameter for a peri od of 24 hours. The part icles are collected on a Teflon filter that is weighed to determine the particulate mass. These samplers report the air volume measured during the sampling period allo wing the concentration (mass/volume) to be
calculated.

4.5.1 Monitoring Requirements

Maryland m ust operate the minimum of two PM 10 

### SLAMS monitoring sites as listed in 40 CFR Part 58 Appendix D Table D-4.

4.5.2 Sources

Major sou rces of PM 10 

### include steel mills, power plants, motor vehicles, industrial plants, unpaved roads, and agricultural tilling. The wide variety of PM 10 

### sources means that the chemical and physical composition of co arse particles is highly variable.

4.5.3 Changes Planned for 2010-2011

MDE is proposing to sh ut down the continuous PM 10 

### monitor at Essex, as discussed in the 5-year Network Assessment. This change will be made effective immediately following approval by the EPA Regional Administrator.



## 4.6 Fine Particulate Matter (PM 2.5 

## ) – General Description and Sampling Method

MDE also uses both manual gravimetric and automated monitors, BAM’s, to measure
PM 2.5 

### mass concentrations in Maryland. A filter attached to the inlets of these monitors excludes particles having diameters greater than 2.5 microns. Otherwise, the monitors work as described

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### 25

### for PM 10 

### gravimetric and automated m onitoring, section 4.5. Some of the gravimetric monitors are specially equipped to collect PM 2.5 

### samples which are later analyzed into concentrations of the samples’ chemical constituents or species, see Table 3-4 for list of speciated PM 2.5 

### mass.

MDE uses MetOne SuperSAAS samplers and IMPROVE samplers for the collection of samples for the chemical speciation of PM 2.5 

### . The samplers collect 3 to 4 filter samples simultaneously every third or sixth day for a peri od of 24 hours. These samp les are then sent to an EPA contract laboratory for chemical analyses . There are over 50 species consisting of ions, metals and carbon species quantified by the analyses (see Table 3-4).

4.6.1 Monitoring Requirements

Maryland m ust operate at least the minimum number of required PM 2.5 

### sites listed in 40 CFR Part 58 Appendix D Table D-5. These required monitoring stations or sites must be located to represent community-wid e air quality. In additi on, the following specific criteria also apply:

 At least one monitoring station is to be sited in a populati on-oriented area of expected
maximum concentration.

 For areas with more than one required stati on, a monitoring station is to be located in an area of poor air quality.

 Each state shall install and operate at least one PM 2.5 

### site to monitor for regional background and at least one PM 2.5 

### site to monitor regional transport.

Maryland is also required to operate con tinuous fine particulate analyzers at three monitoring sites, and one of t hose sites must be collocated for quality assurance purposes.

In addition, chemical speciation is encouraged at sites where the chemically resolved data would be useful in developing the State Implem entation Plan (SIP) and supporting health effects
related studies.

Please note that data collected by the PM 2.5 

### monitors located at Oldtown and Fire Dept 20 is representative of the middle scale a nd will not be compared to the annual PM 2.5 

### NAAQS of
15  g/m 3



### .
EPA is in the process of reviewing and updating the PM NAAQS. The proposed rule is planned for November 2010. The program will address PM when the NAAQS and monitoring requirements are updated in th e 2012 Annual Network Plan.

4.6.2 Sources

PM 2.5 

### pollution is emitted from combustion activ ities (such as industrial and residential fuel burning and motor vehicles). PM 2.5 

### can also form in the atmosphere from precursor compounds through various physical and chemical processes.

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### 26

### 4.6.3 Changes Planned for 2010-2011

 MDE’s existing Andersen RAAS FRM sam p lers are no longer manufactured or supported by their vendor. MDE has been phasing out the Andersen samplers and replacing them with new ThermoFisher 2025 FRM’s as resources allow. Eleven of the 2025’s have been deployed to exis ting sites and will be running during 2010-
2011.

 MDE has been testing the newly designate d FEM (March 8, 2008, Federal Register, pp. 13224-13225) MetOne BAM–1020, continuous, PM 2.5 

### monitors, collocated with
PM 2.5 

### FRM’s, at the following locations : Oldtown, Fairhill, Rockville and HUBeltsville. These monitors have been desi gnated as Special Purpose Monitors (SPM) which allows MDE time to evaluate their pe rformance with respect to the Class III criteria (40CFR, Part 53). Prior to the e xpiration of SPM status in August 2010, the continuous SPM’s will be redesignated to FEM’ s and their status will be changed to SLAMS making the data captured el igible for comparison to the PM 2.5 

### , NAAQS. The
FRM monitors collocated with them will be removed at Fairhill, Rockville and HUBeltsville. The Oldtown FRM will continue to be collocated with a continuous FEM.

 MDE is proposing to change represen tative scale for Fire Dept. 20 from neighborhood to middle scale. In addition, MDE is proposing to change the monitoring objectives of the following: Ol dtown from population exposure to highest
concentration PM 2.5 

### site for the Baltimore, MD MS A, Hagerstown from population exposure to highest concentration PM 2.5 

### site for the Hagerstown, MD-Martinsburg, WV MSA, Piney Run will be a regional tran sport site once an FRM/FEM is deployed there, and Fire Dept. 20 from a population e xposure to source or iented; as discussed in the 5-year Network Assessment. These changes will be made effective immediately following approval by th e EPA Regional Administrator.



## 4.7 Sulfur Dioxide (SO 2 

## ) – General Description and Sampling Method

Sulfur dioxide (SO 2 

### ) is measured with a fluorescence analyzer. Air is drawn through a sample cell where it is subjected to high intensity u ltraviolet light. This ca uses the sulfur dioxide
molecules in the air to fluores ce and release light. The fluores cence is detected with a photo multiplier tube and converted to an electrical signal proportional to the SO 2 

### concentration.

4.7.1 Monitoring Requirements

There are no m inimum requirements for the number of SO 2 

### monitoring sites. Operation of the existing SO 2 

### sites in Maryland is required until MDE requests discontinuation and the EPA Regional Administrator approves the reques t. The EPA Regional Administration has not approved SO 2 

### monitoring for discontinuation; hence, th e Program must operate at least one SO 2 

### monitor located to measure regional maximum c oncentration within the geographic area that it represents.

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### 27

### 4.7.2 Sources

The m ain sources of SO 2 

### are combustion of coal and oil (mostly from electrical generating units (EGUs), refineries, smelters, and industrial boilers). Na tionally, two-thirds of
all sulfur dioxide emissions are from EGUs. Coal operated EGUs account for 95% of these
emissions.

4.7.3 Changes Planned for 2010-2011

MDE is proposing to change the m onitoring objective of Essex from population exposure to highest concentration, as discussed in the 5- year Network Assessment. This change will be made effective immediately following approval by the EPA Regional Administrator.

4.8 PAMS (Photochemical Assessment Monitori ng Stations) – General Description and Sampling Method

The purpose of the PAMS program is to provide an air quality database that will assist in evaluating and modifying control strategies for attaining the ozone NAAQS. The selection of parameters to be measured at a PAMS site vari es with the sites ozone nonattainment designation (moderate, serious, severe or extreme) and whet her the site is upwind or downwind of ozone precursor source areas. The parameters are O 3 

### , NO, NO
x 

### , NO 2 

### , NO y 

### and speciated volatile organic compounds (VOCs).

Methods used to sample and analyze VOCs and NO y 

### follows (NO/NO
x 

### and O 3 

### have already been described in Sec tions 4.3 and 4.4, respectively):

Ambient air is collected in ei ght 3-hour canister samples every 3 rd 

### (June – August) day using a XonTech Model 910A Canister Sampler with a Model 912 multicanister sampling adapter. The canisters are re turned to the laborator y for analysis on an EnTech/Agilent GC/FID system.

Ambient air is collected in 24-hour ca nister samples every sixth day using a XonTech Model 910A Canister Sampler. The can isters are returned to the laboratory for analysis on an EnTech/Agilent GC/FID syst em. These are the same canister samples listed section 4.8 below but analyzed for the PAMS list of compounds.

Ambient air is collected and analyzed on-site every hour (June – August) using a Perkin Elmer VOC Air Analyzer with dual flame ionization detectors.

Ambient air is sampled hourly for NO y 

### using a TECO, Model 42C low level oxides of nitrogen analyzer.

4.8.1 Monitoring Requirements

Maryland m ust operate at least the minimu m PAMS monitoring network listed in 40 CFR Part 58 Appendix D Table D-6. PAMS sites sample during the months of June, July, and August. The following specific criteria apply:

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### 28

### At least one site is established to m onitor the magnitude and type of precursor emissions in the area where maximum precursor emissions are expected.

At least one site is established to characterize upwind background and transport
O 3 

### and its precursor concentrations entering the area.

At least one NO y 

### site per area is establis hed to monitor maximum O 3 

### concentrations occurring downwind from th e area of maximum precursor emissions.

4.8.2 Monitoring Locations

There are th ree monitors that are part of th e PAMS network. The Type 1 is located at HU-Beltsville, Prince George’s County; the Type 2 is located at Essex, Baltimore County; and the Type 3 is located at Aldino, Harford County. Refer back to Table 3-2 for parameter
inform ation and monitoring objective at each monito ring site. For a map of monitoring locations in Maryland refer to Figure 3-1

.

4.8.3 Sources

PAMS VOC’s can com e from automobiles, gaso line vapors, and a vast variety of large and small commercial, and industrial sources that use chemical solvents, paint thinners and other chemical compounds.

4.8.4 Changes Planned for 2010-2011

On Oct. 17, 2006, EPA finalized revisions to the PAMS monitoring rule that reduced some of the minimum requirements including NO y 

### . NO y 

### monitoring is now only required at one site per PAMS area, either a Type 1 or Type 3. Historical data completeness for NO y 

### at Aldino during the ozone season has been poor due to a combination of instrume nt operational problems and resource limitations during th e ozone season. Since this measurement is no longer required, MDE is recommending discontinuing NO y 

### at Aldino, as discussed in the 5-year Network Assessment. In addition, MDE is proposing to change the VOCs monitoring objective of HUBeltsville from population exposure to upwind bac kground, as discussed in the 5-year Network Assessment. Both changes will be made effective immediately following approval by the EPA Regional Administrator.



## 4.9 Air Toxics – General Descri ption and Sampling Method

Air toxics, or hazardous air pollutants (HA PS), are those pollutants which are known or suspected to cause cancer or other serious health effects, such as reproductive or birth defects, or
adverse environmental effects. MDE’s air toxi cs network measures the toxic VOCs listed in Table 3-4. Air toxics samples are collected fo r 24 hours in canisters with a XonTech model 910A canister sampler on an every sixth day sc hedule. The canisters are returned to the laboratory for analysis on an Entech/Agilent gas chromatograph mass spectrometer system.

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### 29

### 4.9.1 Monitoring Requirements

As part of th e EPA Region III Cooperati ve Toxic Monitoring Program, Maryland operates four air toxic monitoring stations to assess ge neral urban levels. Toxics are sampled every sixth day year-round.

4.9.2 Monitoring Locations

There are four m onitors measuring air toxi cs in Maryland: Esse x, Baltimore County, NE Police and Oldtown, Baltimore City, and HU-Beltsvill e, Prince George’s County. Refer back to
Table 3-2 for parameter information and monitoring objective at each monitoring site. For a map
of m onitoring locations in Maryland refer to Figure 3-1

.

4.9.3 Sources

Toxics can com e from automobiles, gasolin e vapors, and a large variety of large and
small commercial and industrial sources that use chemical solvents, paint thinners and other chemical compounds.

4.9.4 Changes Planned for 2010-2011

No changes planned.



## 4.10 NCore – General Description and Sampling Method

On October 30, 2009 EPA’s Office of Air Quality Planning and Standards (OAQPS) formally approved MDE’s request that both the HU-Beltsville and Piney R un monitoring stations to be designated NCore sites.

NCore, or National Core multi-pollutant monitoring stations, is a new National monitoring network required in the Oct ober 17, 2006 revisions to the Air Monitoring Regulations (40CFR, Part 58). NCore sites are required to measure, at a minimum, PM 2.5 

### particle mass using continuous and integr ated/filter-based sa mplers, speciated PM 2.5 

### , PM 10-2.5 

### particle mass, speciated PM 10-2.5 

### , O 3 

### , SO 2 

### , CO, NO/NO y 

### , wind speed, wind direction, relative humidity, and ambient temperature.

Sampling methods for PM 2.5 

### , speciated PM 2.5 

### , O 3 

### , SO 2 

### , NO/ NO y 

### are described under the individual pollutant sections throughout this document. Tra ce level measurement of CO and
SO 2 

### is performed at NCore sites. PM 10-2.5 

### , or PMCoarse is determined by the difference between
collocated PM 10 

### and PM 2.5 

### FRM samplers. There is no gene rally accepted method to perform
PM 10-2.5 

### chemical speciation at this time.

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### 30

### The m eteorological parameters are measured as follows as follows:

 The Vaisala WXT520 PTU module contains separate sensors for pressure, temperature and humidity measurement. The measurement pr inciple of the pressure, temperature and humidity sensors is based on an advanced RC oscillator and two reference capacitors against which the capacitance of the se nsors is continuously measured. The microprocessor of the transmitter performs compensation for the temperature dependency of the pressure and humidity sensors.

 The Vaisala WXT520 uses RAINCAP Se nsor 2- technology in precipitation measurement. The precipitation sensor compri ses of a steel cover and a piezoelectrical
sensor mounted on the bottom surface of the co ver. The precipitation sensor detects the impact of individual raindrops. Hence, the si gnal of each drop can be converted directly
to accumulated rainfall. An advanced noise filter ing technique is used to filter out signals originating from other s ources and not raindrops.

 The Vaisala WXT520 uses WINDCAP sensor technology in wind measurement. The wind sensor has an array of three equally spaced ultrasonic transducers on a horizontal plane. Wind speed and wind directions are de termined by measuring the time it takes the
ultrasound to travel from each transducer to the other two. The wind sensor measures the transit time (in both directi ons) along the three paths es tablished by the array of transducers. This transit time depends on th e wind speed along the ultrasonic path. For zero wind speed, both the forward and reverse transit times are the same. With wind along the sound path, the up-wi nd direction transit time increases and the down-wind
transit time decreases.

MDE operates other meteorological paramete rs not required by th e NCore network, and they are measured as follows:

 MetOne’s Model 092 instrument is used to m easure barometric pressure. The instrument directly senses the weight of the ai r column or the atmospheric pressure.

 The Climatronics’s P/N 102342 Pyranometer is used to measure solar radiation. The
detector element is a circular wirebound mu lti-junction thermopile. This thermopile
sensor absorbs solar radiation and converts it to heat . The heat flows through the sensor to the pyranometer housing and generates a vol tages output signal that is proportional to
the solar radiation.

4.10.1 Monitoring Requirements

Each State is required to operate one NCore s ite that m ust be physically established by January 1, 2011. Urban NCore stations are to be located at the urban or neighborhood scale to provide representative concentrations of e xposure expected throughout the metropolitan area.
Rural NCore stations are to be located to the ma ximum extent practicable at a regional or larger scale away from any large loca l emission source so that they represent ambient concentrations
over an extensive area.

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### 4.10.2 Monitoring Locations

MDE has been operating pilot NCore sites at HU-Beltsville since 2005 and Piney Run since
2004. The Beltsville site is considered an Urban NCore site and Piney Run, a Rural NCore site. Refer to Table 3-2 for param eter information and monitoring objective at ea ch site. For a map of monitoring locations in Maryland, refer to Figure 3-1.

4.10.3 Sources

Sources have already been addressed under th e individual pollutant sections throughout
this docum ent.

4.10.4 Changes Planned for 2010-2011

MDE will begin PMCoarse m onitoring by January 1, 2011 at both Piney Run and Beltsville. For Piney Run, FRM or FEM PM-2.5 and PM-10 monitors will have to be installed. At Beltsville, only a low volume PM-10 FEM is needed. These changes will be made pending availability of adequate resources.

In addition, the sampling frequency for the CSN monitor at Beltsville will be changed from a 1-in 6 to 1-in-3 day sampling schedul e by Jan. 1, 2011, pending availa bility of adequate

resources.



## 4.11 The Rural Aerosol In tensive Network – General Description

The Rural Aerosol Intensive Network (RAIN) is a small network of three monitoring sites coordinated by NESCAUM th at supports the regional haze rule by determining relative contributions of source regions to visibil ity. RAIN monitors accomplish this by providing
detailed characterization of trans ported pollution with both a visibility 1 

### and fine particle focus. MDE participates in this network.

4.11.1 Monitoring Requirements

See table 3-4 for a lis t of RAIN parameters.

4.11.2 Monitoring Locations

1 MDE operates other sites having monitors that measure vi sibility, sulfate, OC/EC and light scatter, see Tables 3-1
and 3-2a for details.

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### Frostburg – (Piney Run), Maryland, Mohawk Mt., Connecticut, a nd Acadia NP, Maine

4.11.3 Sources

Airborne fine particles consisting of sulfate, nitrate, and organic- carbon impair visibility.
Sulfate forms from sulfur dioxide released by fu el burning sources such as power plants. Nitrate sources include highway vehicles and off-roa d, construction equipment. Organic-carbon sources
also include on and off-road vehicles and also w ildfires. Some of these pollutants are released locally, but some are transported hundreds of miles into the region.

4.11.4 Changes Planned for 2010 – 2011

See Section 4.10.4 for changes planned for the Piney Run site.



## APPENDIX A – TOPOGRAPHIC AND AERIAL MAPS

This section contains top ographic and aerial maps for air monitoring stations in Maryland. Detailed information regarding each m onitoring station (e.g. coordinates, parameters, method codes, etc.) can be found in Table 3-2 a, Table 3-2b, Table 3-3, and Table 3-4.

Figure A 1. Topographic map of air monitoring sites in Baltimore, MD.

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### 33Figure A 2. Topographic map of air monitori ng sites in Southern Maryland counties.

Figure A 3. Topographic map of air monito ring sites in Western Maryland counties.

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### 34Figure A 4. Topographic map of air monitori ng sites in Carroll and Frederick counties.

Figure A 5. Topographic map of air monitori ng sites to the north of Washington, DC.

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### 35Figure A 6. Topographic map of air monitoring site s located in Northeastern counties and the Eastern
Shore.

Figure A 7. Aerial map of Aldino air monitoring site in Harford County, MD.

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### 36Figure A 8 Aerial map of Ha ze Cam site at Brandon Shores

Figure A 9. Aerial map of Bladensburg VFD air monitoring site in Prin ce George’s County, MD.

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### 37Figure A 10. Aerial map of Calvert Co ai r monitoring site in Calvert County, MD

Figure A 11. Aerial map of Calvert Co ai r monitoring site in Calvert County, MD

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### 38Figure A 12. Aerial map of Edgewood air monitoring site in Harford County, MD.

Figure A 13. Aerial Map of the Essex air monitoring site in Baltimore County, MD

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### 39Figure A 14. Aerial map of Fairhill air monitoring site in Cecil County, MD.

Figure A 15. Aerial map of Frederick Airport air monitoring site in Frederick County, MD.

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### 40Figure A 16. Aerial map of Furley air monitoring site in Baltimore City, MD.

Figure A 17 Aerial map of Frostburg Haze Cam site

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### 41Figure A 18. Aerial map of Glen Burnie air monitoring site in Anne Arundel County, MD.

Figure A 19. Aerial map of Ha gerstown air monito ring site in Washington County, MD.

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### 42Figure A 20. Aerial map of HU-Beltsville air mo nitoring site in Prince George’s County, MD.

Figure A 21. Aerial map of Millington ai r monitoring site in Kent County, MD.

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### 43Figure A 22. Aerial map of NE Police air monitoring site in Baltimore City, MD.

Figure A 23. Aerial map of NW Police air monitoring site in Baltimore City, MD.

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### 44Figure A 24. Aerial map of Oldtown air monitoring site in Baltimore City, MD.

Figure A 25. Aerial map of Padonia air mo nitoring site in Baltimore County, MD.

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### 45Figure A 26 Aerial map of PG Equestrian Center air monitoring site in Prince George’s County, MD.

Figure A 27. Aerial map of Piney Run air monitoring site in Garrett County, MD.

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### 46Figure A 28. Aerial map of Rockville air monitoring site in Montgomery County, MD.

Figure A 29. Aerial map of Fire Dept. 20 ai r monitoring site in Baltimore City, MD.

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### 47Figure A 30. Aerial map of South Carroll air monitoring site in Carroll County, MD.

Figure A 31. Aerial map of So uthern Maryland air monitoring site in Charles County, MD.

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### 48