# Arizona Air Quality Designations

Technical Support Document

Boundary Recommendation

for the 2008 Revision to the

National Ambient Air Quality Standard for

Lead

Air Quality Division

December 9, 2009

# 1 This page is intentionally blank.

# i TABLE OF CONTENTS

Page

EXECUTIVE SUMMARY......................................................................................................... ES-1

1.0 BACKGROUND ....................................... ......................................................................... 1

2.0 AREA DESIGNATION CRITERIA............... ........................................................................... 2

3.0 AREA DESIGNATION CRITERIA ANALYSIS FOR THOSE AREAS...................................... 3

RECOMMENDED AS ATTAINMENT/UNCLASSIFIABLE

4.0 AREA DESIGNATION CRITERIA ANALYSIS FOR THOSE AREAS..............................5

RECOMMENDED AS NONATTAINMENT

5.0 AREA DESIGNATION RECOMMENDATIONS ....................................................................... 24

LIST OF FIGURES Page

ES-1 Topographical Features of Southern Gila County ........................................................ ES-2

ES-2 Lead (Pb) Nonattainment Area Recommendation........................................................ ES-3

1-1 Comparison of Pb National Ambient Air Quality Standards.............................................. 1

3-1 Pb Monitors in Arizona............................................................................................... 4

4-1 Hayden Pb Mon itor Locations................. ...................................................................... 8

4-2 Gila County Populatio n Density 2005................... ............................................................. 9

4-3 Gila County Popula tion Density 2030.............. ............................................................ 10

4-4 Pinal County Populatio n Density 2005............................................................................. 11

4-5 Pinal County Populatio n Density 2030............................................................................. 12

4-6 Gila County Employment De nsity 2005..........................................................14

4-7 Gila County Employment Density 2030...........................................................15

4-8 Pinal County Employment De nsity 2005.........................................................16

4-9 Pinal County Employment Density 2030.........................................................17

4-10 Proposed Nonattainment Area Annua l Daily Average Traffic................................18

4-11 Land Ownership Patterns in Gila County........................................................22

5-1 Proposed Hayden Pb Nonatta inment Area.......................................................25

# ii LIST OF TABLES Page

ES1 Criteria for Nonattainment Boundary Recommendations ............................................ ES-1

1-1 Comparison of Pb National Ambient Air Quality Standards.............................................. 1

3-1 Counties Recommended for Attainment/Unclassifiable..................................................... 3

3-2 Selected Arizona Demographic Data................................................................................ 5

4-1 Violations of the Pb NAAQS in the Hayden Area ......................................................... 7

4-2 Historical and Projected Population for Hayden and Gila County ................................... 19

4-3 Summary of Nine Criteria Analysis for the Proposed Hayden Pb ...........................23

Nonattainment Area

APPENDICES Initial Reference Page

A. Ambient Monitoring Data................................................................................................... 3

B. Procedures for Calculating L ead Design Values................................................................. 7

C. CH2M Hill Technical Memorandum : Preliminary Evaluation of PM 10 

# and Metals .................7

Concentrations from October 2007 to December 2008 in Ambient Air at the Hayden

and Winkelman Monitoring Stations

D. Control Measures and Technologies Implem ented at the ASARCO Ray Complex and............20

Hayden Smelter and Concentrator

E. ADEQ Memo Certifying Hayden Area Air Quality Monitoring Data ............................................ 7

F. ASARCO Contractor Zephyr Environmental Corporation Report on .......................................... 24

ADEQ’s Pb Boundary Recommendation

G. ADEQ Response to ASARCO Consultant Ze phyr Environmental Corporation Report ............... 24

H. Town of Kearny Resolution Rega rding Pb Boundary Recommendation ...................................... 24

# 1 Arizona Air Quality Designations

Boundary Recommendations for the 2008

Lead National Ambient Air Quality Standard

EXECUTIVE SUMMARY

In October 2008, the U.S. Environmental Protection Agency (EPA) revised the existing National Ambient

Air Quality Standard (NAAQS) for Lead (Pb). EPA’s fina l rule for Pb, effective January 12, 2009, stated

that the county in which violations of the Pb NAAQS had occurred would be the default boundary for Pb

Nonattainment Areas within a state. Pb monitoring data has been collected by ADEQ at the JLG Supersite

in Central Phoenix, by Freeport Mc MoRan in Miami, and contractors for EPA in Hayden. The one area in

Arizona recommended as nonattainment consists of the Ha yden portion of southern Gila and eastern Pinal

Counties, the same boundaries as the existing Hayden Sulfur Dioxide (SO 2 

# ) Nonattainment Area and the

de facto impact area if the ASARCO Ray Complex copper concentrating and smelting operations.

Arizona recommends the rest of the state be desi gnated as attainment/unclassifiable for the 2008 Pb

NAAQS.

This recommendation follows careful consideration of the new Pb standard, requirements for designation

of Nonattainment Areas, and options availabl e for implementing the st andard. This document

demonstrates the impracticability of and lack of environmental benefit from designating the

Nonattainment Area boundary based on EPA’s default area definition. Because the state is recommending

nonattainment boundaries that are less than all of G ila and Pinal Counties, the state must address the

following nine criteria listed in the table below.

Table ES-1

Criteria for Nonattainment Boundary Recommendations

1. Emissions data (location of sources and contribution to Pb concentrations)

2. Air quality data

3. Population density and degree of urbani zation (including commercial development)

4. Traffic and commuting patterns

5. Growth rates and patterns

6. Meteorology (weather and air movement patterns)

7. Geography/topography (mountain ranges or other air basin boundaries)

8. Jurisdictional boundaries (e.g., counties, air districts, existing nonattainment areas, etc.)

9. Level of control of emission sources.

The region in which the proposed Nonattainment Area is located is defined by complex terrain; rugged

mountain ranges and canyons define airflow patterns w ithin the region. The Gila River Airshed, where

Hayden is located, is bordered by mountain ranges to the north, east, and west. These geographic

boundaries separate the Hayden area from the remainder of Gila County and help to contain emissions

from ASARCO’s Ray Complex coppe r smelter and concentrator, which reside in the proposed

Nonattainment Area. Figure ES-1 illustrates the complexity of the terrain that divides the Hayden area

from most of Gila County. Weather patterns, the location of emission sources, a low potential for

population growth, existing jurisdic tional boundaries, and analyses of ambient monitoring data also

support the exclusion of the majority of Gila and Pinal Counties from the Nonattainment Area. EPA

agreed with the state’s position that Hayden and the ma jority of Gila and Pinal Counties are in separate



# ES-1

# 2 airsheds in its October 2006 final rule separating the Hayden and Miami PM 10 

# Nonattainment Areas. 1



# Analysis supporting the state’s nonattainment re commendations can be found in Section 4.0. The

recommended Nonattainment Area also excludes Indian Country over which Arizona has no jurisdiction.

Arizona’s alternative recommendation also includes d esignation as attainment/unclassifiable for the rest

of the State, as explained in Section 3.0. Figur e ES-2 illustrates the recommended Pb Nonattainment

Area.

Figure ES-1

Topographical Features of Southern Gila and Pinal Counties

1 

# On March 28, 2007, EPA approved ADEQ’s request to split the existing Hayden-Miami PM 10 

# Nonattainment Area

into two separate PM 10 

# Nonattainment Areas (72 FR 14422).



# ES-2

# 3 Figure ES-2

Pb Nonattainment Area Recommendation



# ES-3

# 1 Arizona Air Quality Designations Boundary Recommendations for the

2008 Pb National Ambient Air Quality Standard

1.0 BACKGROUND

The U.S. Environmental Protection Agency (EPA) is charged with developing air quality standards for

the protection of human health and the environment. As required by the Clean Air Act (CAA), EPA sets

primary and secondary National Ambient Air Quality Standards (NAAQS) for six common air pollutants,

one of which is Pb. 2 

# Maximum pollution levels or limits that are based on human health are called

primary standards. Limits intended to prevent e nvironmental and property da mage are called secondary

standards. EPA is required to evaluate and revi se the standards if scientific analyses indicate new

standards would be more protective of public health a nd welfare. Prior to 2008, the Pb standard was last

revised in 1978.

The long-term health effects of Pb are severe; they include decreased growth, hyperactivity, impaired

hearing, and even permanent brain damage. If detect ed early, these effects can be limited by reducing

exposure to Pb and by receiving appropriate medical car e. Children are particularly sensitive to the health

effects of Pb. Prior to the conversion to an unleaded gasoline standard, vehicles were a significant source

of Pb emissions. In Arizona, copper smelters and concentrators are currently one of the largest sources of

ambient Pb emissions.

In 2008, following extensive analysis, EPA adopted a revised standard to provide more protection for

children and other ‘at risk’ populations from exposure to elevated levels of Pb pollution. EPA lowered

the primary Pb standard from 1.5 micrograms per cubic meter (1.5 μ g/m 3 

# ) to 0.15 ug/m 3 

# (73 FR 66964;

October 15, 2008). Concentrations are measured as To tal Suspended Particles or TSP, a particle size

range up to 45 micrometers in aerodynamic diameter . The secondary standard (for protection of the

environment) was revised to a level identical to the primary standard. Table 1-1 compares the level of the

1978 Pb standard to the new 2008 standard.

Table 1-1

Comparison of Pb National Ambient Air Quality Standards

Standard Level Averaging Time Form (Attainment Test)

1978 Standard 1.5 μ g/m 3 

# Calendar Quarter Maximum Arithmetic Mean

2008 Standard 0.15 μ g/m 3 

# 3 months Rolling Three-Month

Arithmetic Mean Concentration

2 

# See http://www.epa.gov/air/criteria.html for a comple te list of National Ambient Air Quality Standards.

# 2 2.0 AREA DESIGNATION CRITERIA

Under Clean Air Act (CAA) Section 107(d) the each state must make recommendations for areas that

meet or do not meet new or revised NAAQS within one year following the promulgation of such

standards. Each state’s recommendations for the 20 08 Pb standard is due by October 15, 2009. EPA

anticipates promulgation of final Pb designations by October 2011. 3



# Section 107(d)(1)(A)(i) of the Clean Air Act (CAA) defines a nonattainment area as ... any area that does

not meet (or that contributes to ambient air quality in a nearby area that does not meet) the national

primary or secondary ambient air quality standard for the pollutant. At present, EPA has not issued a

guidance for areas found to be in nonattainment or deemed to be in attainment/unclassifiable for the Pb

NAAQS. In the Pb final rule, however, EPA dire cted states to base nonattainment area boundary

recommendations on a nine factor analysis simila r to those established in EPA’s 1997 8-hour ozone

NAAQS, the 1997 PM 2.5 

# NAAQS, and the 2006 PM 2.5 

# NAAQS.

EPA recommends using county boundaries as the st arting point or default boundary for evaluating the

geographic boundaries of a Pb nonattainment area. To refine nonattainment boundaries for more

appropriate recommendations (either larger or smalle r boundaries than the default boundary) a state must

perform an area-specific analysis that addresses the nine criteria discussed in the Executive Summary.

In addition, the state should affirm that the nonattain ment area analysis demonstrates that: "1) violations

are not occurring in nearby portions that are ex cluded from the recommended area, and 2) the excluded

nearby portions do not contain emission sources that c ontribute meaningfully to the observed violations."

ADEQ considered these factors in developing th e recommended attainment, unclassifiable, and

nonattainment boundaries, as detailed in Section 3.0.

3 

# 40 CFR Part 51 – National Ambient Air Quality Standard for Lead; Final Rule, 73 FR 66964, November 12, 2008.

# 3 3.0 AREAS RECOMMENDED AS ATTAINMENT/UNCLASSIFIABLE

Areas recommended as attainment/unclassifiable include areas of the state where ambient Pb monitoring

data are insufficient, where attainment of NAAQS has been demonstrated, and areas without significant

point sources. For its analysis, ADEQ reviewed available ambient monitoring data and statistics for

population density, degree of urbanization, traffi c volume, commuting patterns, and jurisdictional

boundaries. Table 3-1 discusses ADEQ’s determination for each criterion.

ADEQ monitors ambient Pb concentrations in central Phoenix, but not throughout the state. Without

sufficient monitoring data, the state cannot determine if an area is in nonattainment. The state plans to

begin monitoring Pb concentrations in accordance with EPA’s Pb final rule. Those counties without

sufficient monitoring data which are recommended as attainment/unclassifiable are listed at the bottom of

this page.

For its purposes, ADEQ reviewed ambient Pb monito ring data recorded by FMMI in Miami and data

recorded by ADEQ in Phoenix. Monitoring data used to recommend the Hayden area of Gila and Pinal

Counties as nonattainment is discussed in Section 4. 0. For those portions of Gila County recommended as

attainment/unclassifiable, ADEQ analyzed ambient Pb concentrations monitoring data for the Miami area

collected by Freeport McMoRan Miami Inc. (FMMI) starting in January 2006 and ceasing in December

2008. Due to incomplete records, the monitoring data for the Miami area is indeterminate. ADEQ is

recommending the Miami area be designated as attainment/unclassifiable.

Starting in January 2005, ADEQ has been monitoring Pb concentrations at the James L. Guyton (JLG)

Supersite in central Phoenix. Monitoring data from th is site has demonstrated that the state’s most

populous city is in attainment of the Pb NAAQS. Ba sed on these data, ADEQ is able to discern that urban

commercial operations, high population density, autom obile emissions, high traffic volume, and high

growth rates have a minimal impact on ambient Pb c oncentrations in Arizona. Ambient monitoring data

is included in Appendix A.

Based on the analysis discussed above, ADEQ conclud es the following full and partial counties are not

experiencing or likely causing or contributing to an exceedance of the Pb NAAQS and, therefore, should

be classified as attainment/unclassifiable. Secti ons of Gila and Pinal Counties recommended for

nonattainment are discussed in Section 4.0. Figure 3-1 illustrates the location of Pb monitors in Arizona.

Table 3-2 contains demographic data about each county in the state.

Table 3-1

Counties Recommended As Attainment/Unclassifiable

Apache County Greenlee County Pima County

Cochise County La Paz County Pinal County (Partial)

Coconino County Maricopa County Santa Cruz County

Gila County (Partial) Mohave County Yavapai County

Graham County Navajo County Yuma County

# 4 Figure 3-1

Pb Monitors in Arizona

# 5 Table 3-2

Selected Arizona Demographic Data

County/Largest City 2008

Population 2008 Density

(persons per

square mile) Area

(square miles)

Apache County 76,156 6.8 11,204.9

Eagar 4,810

Cochise County 139,434 22.6 6,169.4

Sierra Vista 45,908

Coconino County 135,613 7.3 18,617.4

Flagstaff 64,693

Gila County 57,361 12.0 4,767.7

Payson 16,965

Graham County 38,633 8.3 4,629.3

Safford 9,982

Greenlee County 8,950 4.8 1,847.0

Clifton 2,616

La Paz County 21,544 4.8 4,499.9

Quartzsite 3,692

Maricopa County 3,987,942 433.3 9,203.1

Phoenix 1,561,485

Mohave County 205,862 15.5 13,311.6

Lake Havasu City 55,429

Navajo County 114,780 11.5 9,953.2

Show Low 12,315

Pima County 1,014,023 110.4 9,186.3

Tucson 543,959

Pinal County 350,558 65.3 5,369.6

Casa Grande 45,116

Santa Cruz County 47,471 38.4 1,237.6

Nogales 21,709

Yavapai County 227,348 28.0 8,123.3

Prescott 43.280

Yuma County 203,779 37.0 5,514.1

Yuma 93,719

Arizona Total 6,629,455 58.3 113,634.6

Source: U.S. Census Bureau, Census 2000. Arizona Department of Commerce, Population

Statistics Unit, December 12, 2008.



# 4.0 AREAS RECOMMENDED AS NONATTAINMENT

According to EPA's guidance, the default nonattainment area boundary for areas violating the air quality

standard or contributing to a violation in a nearby area is the county in which the violating monitor is

located. The Hayden area of Gila and Pinal Counties is the only location where ambient air monitors

have recorded concentrations of Pb that violate the air quality standard. Most of the Gila County,

however, contains vast expanses of undeveloped public lands and isolated rural communities that are not

affected by Pb emissions originating from ASA RCO’s Hayden copper concentrating and smelter

operations. The townships in eastern Pinal County recommend as nonattainment are similarly isolated

# 6 from growing urban areas in the western and northern portions of the county by publicly owned lands and

rugged terrain.

This recommendation addresses the nine factors or cr iteria outlined in EPA's guidance to determine a

more appropriate nonattainment area boundary. What fo llows is an explanation of how each criterion was

addressed in Arizona’s determination.

4.1 Air Quality Data

For its determinations, AD EQ reviewed valid ambient Pb monitoring data recorded at three air quality

monitors. One monitor is located in central Phoenix a nd two monitors are located in the Hayden area near

the ASARCO Ray Complex copper concen trating and smelting operations.

The JLG Supersite PM 10 

# monitor located in central Phoenix is ope rated as part of the National Air Toxics

Trends (NATTS) network representing the Phoe nix metropolitan area. The JLG Supersite PM 10 

# samplers

are operated by ADEQ; the filters are processed by ERG laboratory as part of the NATTS program.

ADEQ validates the laboratory results before submitti ng the data in AQS. The validation procedure

verifies that the monitor passed all quality control test s. Monitor operation, sample handling and shipping,

and data validation are included in the ADEQ NATTS/ATMP/PAMS 4 

# Quality Assurance Project Plan

(QAPP). The JLG Supersite monitor has not recorded violations of the Pb NAAQS.

The two PM 10 

# monitors in Hayden and Winkelman are part of the Remedial Investigation (RI) being

conducted by EPA Region IX Superfund; sampling at these monitors began in November 2006 and is

scheduled to continue through 2011. Data sets from these monitors are entered in the EPA Air Quality

System (AQS) database; Appendix A contains PM 10 

# and Pb sample results collected during 2006-2008.

These Partisol filter-based monitors are approved by EPA as a federal reference method for Pb.

The Hayden monitoring station is located on the roof of the Town of Hayden maintenance building; the

Winkelman monitor is located on the roof of the Hayden High School gymnasium in Winkelman. 24-

hour samples were collected every sixth day until March 28, 2008, at which point the frequency was

increased to every third day through December 2008. Meteorological data were also collected at these

sites, including average ambient temperature, rela tive humidity, and wind speed and direction. The

locations of the Hayden and Winkelman monitors are depicted in Figure 4-1 on Page 8.

The Hayden and Winkelman PM 10 

# samplers have been operated by two contractors: CH2M Hill and

Innovative Technical Solutions Incorporated (ITSI). CH2M Hill wrote the QAPP, Field Sampling Plan

(FSP), and Data Management Plan in November 2005; CH2M Hill commenced air quality sampling in

November of 2006 and continued monitoring until ITSI assumed responsibility in March 2009. The

QAPP was amended when ITSI was assigned the project by EPA Region 9. ITSI also amended the Field

Sampling Plan (FSP) written by CH2M Hill.

The monitor filters were processed by a contract la boratory, Chester LabNet. CH2M Hill performed

quality control checks on the monitors per the QAPP and FSP. ADEQ's review of the QAPP documents

and quality control checks concluded the lead data provided by the EPA Region IX Superfund Program

has experienced at least three levels of validation (sampler field checks and verification of sample validity

immediately after collection; laboratory analysis a nd quality control checks of laboratory procedures; and

review by EPA Superfund staff). These procedures are comparable to the procedures followed by ADEQ.

4 

# ATMP is an abbreviation for Air Toxics Monitoring Program; PAMS is an a bbreviation for Photochemical Assessment

Monitoring Station.

# 7 ADEQ used data substitution proce dures because data completeness for the Hayden and Winkelman

monitors was less than 75 percent for several months in the 2006-2008 peri od. For its substitutions,

ADEQ used the lowest concentrati on recorded in a given month during the three-year period; for

example, if a substitution was required in the month of January, ADEQ substituted the lowest

concentration recorded among January 2006, January 2007, and January 2008. ADEQ's statistics are

included in Appendix A.

Figure 4-1



# Hayden Pb Monitor Locations

# 8 The Winkelman monitor has not recorded violations of the Pb NAAQS; the Hayden monitor, however,

recorded three separate three-month averages in violation of the NAAQS, as shown below in Table 4-1.

CH2M Hill prepared a preliminary report on th e data collected from November 2007-November 2008

(see Appendix C); the report identified the same th ree-month averages at the Hayden monitor as being

above the Pb standard. This report did not include the full dataset provided by EPA Region IX to ADEQ

(October 2006-December 2008, Appendix A). The CH2M Hill report noted that the findings may change

once all of the data has been validated and all quality assurance and control procedures (QA/QC) have

been completed. An ADEQ memo documenting that all QA/QC procedures for the monitoring data were

completed in compliance with EPA guidelines is contained in Appendix D.

Table 4-1

Violations of the Pb NAAQS at the Hayden Monitor

Ending Month of Three-Month Average Pb Concentrations in μg/m 3



# September 2008 0.17

October 2008 0.19

November 2008 0.21

4.1.1 Design Values

A design value is a statistic that describes the air qualit y status of a given area relative to the level of the

NAAQS. Design values are typically used to classify nonattainment areas, assess progress towards

meeting the NAAQS, and for development of control strategies. Design values are expressed as a

concentration, thereby allowing a direct comparison to the level of the standard. They are based on

multiple years of data, ensuring a stable indicator. The air quality design value for the 2008 Pb NAAQS is

defined as the maximum rolling three-month average over a three-year period (i.e., 2006-2008). The level

of the 2008 Pb NAAQS is 0.15 micrograms per cubic meter (μg/m 3 

# ) which is not to be exceeded in any

three-month period. The design value of the Hayden monitor data is the November 2008 three-month

average of 0.21 μg/m 3



# .

4.2 Emissions Data (location of sources and contribution to Pb concentrations)

Monitoring data indicates the ASARCO concentrator and smelter are the largest sources of Pb emissions

in the area. Extensive chemical analyses of filters from both the Hayden Maintenance Yard and Hayden

High School monitors were conducte d as part of the EPA study of the Hayden Superfund site. The

chemical fingerprint on the filters, combined with analysis of wind speeds and direction indicate that the

operations at the ASARCO Ray Complex copper con centrating and smelting operations are the most

likely source of the Pb exceedances me asured at the Hayden Maintenance Yard monitor. This conclusion

is based on high concentrations of sulfur, copper, arsenic, and iron, in addition to Pb, on the same date. As

required by the operating permit issued by ADEQ, ASARCO reported compound Pb emissions totaling

4.82 tons in 2008. This figure includes fugitives and stack emissions.

4.3 Population Density and Degree of Urbanization

For these criteria, population density, employment, and land ownership were examined for the proposed

Nonattainment Area. These data provide an indicator of the levels of anthropogenic activity that can

contribute to Pb emissions and the size of the exposed population. A review of the projections depicted in

Figures 4-2 thru 4-6 demonstrates that population de nsity in the proposed Nonattainment Area and the

surrounding region is minimal and, according to approved Arizona population estimates, 5 

# is not projected

to change significantly through the potential maintenance period (2011-2031.)

5 

# Source: Building a Quality Arizona , Arizona Department of Transportation, 2009.9Figure 4-2Gila County Population Density 2005Source: Arizona Department of Transportation(Building A Quality Arizona)10Figure 4-3Gila County Population Density 2030Ibid.11Figure 4.4Pinal County Population DensityIbid.12Figure 4-5Pinal County Population Density 2030Ibid.

# 13 4.4 Traffic and Commuting Patterns

The volume of traffic in the Hayden area is low according to traffic counts conducted by ADOT. The

proposed Nonattainment Area includes sections of Highway s 177 and 77, arterials with the highest traffic

counts in the area (3,036 trips per day). By comparison, traffic counts for Highway 84 in Casa Grande, the

largest city in Pinal County, are nearly three times as high (10,562); traffic counts for U.S. 60 in Globe

are nearly eight times higher (16,978 trips per day). Figure 4-11 illustrates the annual average daily traffic

volume for the Hayden area according to ADOT. Figures 4-7 thru 4-10 illustrate the level of population

density in 2005 and projections fo r 2030. Census Bureau data indicates commuting to and from Gila

County for employment purposes is minimal.14Figure 4-6Gila County Employment Density 2005Ibid.15Figure 4-7Gila County Employment Density 2030Ibid.16Figure 4-8Pinal County Employment Density 2005Ibid.17Figure 4-9Pinal County Employment Density 2030Ibid.

# 18 Figure 4-10

Proposed Pb Nonattainment Area Annual Average Daily Traffic

Source: Arizona Department of Transportation

# 19 4.5 Growth Rates and Patterns

Development in Gila and Pinal C ounties is defined by patterns of land ownership. The U.S. Forest

Service is the largest landholder in Gila County, acc ounting for 56 percent of the land area. Indian

reservations cover 37 percent. The U.S. Bureau of Land Management holds 2 percent; and the State of

Arizona and other public lands comp rise 2 percent. Individual and corporate ownership accounts for only

4 percent of the county. Figure 4-11 illustrates restric tive land ownership patterns that limit prospects for

growth in the proposed Nonattainment Area. Growth in Pinal County is also defi ned by land ownership.

The state owns 35 percent; Tribal lands account fo r 20 percent; Federally-owned lands account for 18

percent; other public lands comprise 1 percent. In dividual and corporate ownership accounts for 26

percent. Growth generally occurs in the north centr al portion of the County in areas contiguous with the

Phoenix-Mesa-Scottsdale metropolitan area; Indian reservations as well as state and federal lands create

barriers to contiguous expansion of the urbanized core. Additional growth follows the I-10 and I-8

corridors, south of the Gila River and Ak-Chin Indian Reservations.

The rate of growth in the Hayden area has been sta gnant over recent decades. Though population of both

Gila and Pinal Counties is projected to grow significantly, the Hayden area is not. As shown in Table 4-2

below, growth in the area is projected to remain flat through the potential maintenance period (2011-

2031).

Table 4-2

Historical and Projected Population for Gila and Pinal Counties

1990 2000 2008 2015 2031

Pinal County 

# 179,727 116,397 316,899 486,363 876,091

Gila County 40,216 51,335 56,427 61,128 70,358

Globe 6,062 7,486 7,603 7,974 8,647

Miami 2,018 1,936 1,973 2,022 2,104

Kearny 2,262 2,449 2,085 2,630 3,774

Winkelman 676 443 430 430 430

Hayden 909 892 860 860 860

Sources: Historical data – U.S. Census Bureau; Projections – Arizona Department of Commerce.

# 20 Figure 4-11

Land Ownership in Gila and Pinal Counties

# 21 4.6 Meteorology

Synoptic scale air flows and local topographically driven surface winds influence the speed and direction

of particulate matter transport throughout the Hayden ar ea. Because the atmosphere within an airshed acts

in a cohesive way with respect to the dispersion of emissions, local wind patterns and flow are most

influential in affecting the impact of local particulate emissions. Local wind patterns in the Gila River

Airshed are greatly influenced by the complex local topography. Hayden is located at the junction of two

rivers, the Gila and the San Pedro. Situated in a lo w-lying part of a valley with mountains reaching over

4,000 feet to the north, east and southwest, Hayden is subject to a distinct mountain-valley diurnal wind

pattern. Under stable atmospheric conditions, nighttime winds are typically from the southeast with

speeds less than ten miles per hour. These conditions cause air pooling in low-lying areas at night,

causing pollutants within the air to settle in these areas. The up-slope air flows and convection that

occurs during the day increases dispersion and flow out of the Hayden area. Under normal daytime

conditions, surface winds in the Hayden area range fro m west-southwesterly to west-northwesterly as the

atmosphere becomes less stable. This pattern is repeated throughout the complex terrain found in the

Hayden area.

During the wintertime, relatively strong inversions (w here cold air becomes trapped at the surface by

warmer air aloft) create extremely stable atmos pheric conditions. Depending on the strength of the

inversion and amount of daytime surface heating, the inversion may break by the early afternoon,

permitting the air to mix vertically. Sometimes, howeve r, the inversion may not break at all. Under these

conditions, vertical and horizontal movement of the air is very limited, causing pollutants in the air to

accumulate up to several days with little dispersion.

4.7 Geography/Topography

Hayden lies in the Gila River Valley, approximately 2, 044 feet above sea level. The town sits at the base

of the Dripping Springs Mountains which rise to a he ight of approximately 5,096 feet. The Mescal and

Pinal Mountain ranges rise to the east beyond the Drippi ng Springs range to appr oximately 7,848 feet in

elevation at the highest point. To the west of Hayden , the Tortilla Mountains rise to a height of 4,273 feet.

The complex terrain forms natural boundaries that is olate the Hayden area from most of Gila and Pinal

Counties. As shown in Figure 4-1 (Page 7), a small ra nge of foothills forms a ba rrier between Hayden and

Winkelman, which may reduce the impact of emissions from the operations in Hayden.

4.8 Jurisdictional Boundaries

The boundaries recommended by ADEQ for the Pb N onattainment Area are the same as the existing

Hayden SO 2 

# Nonattainment Area. Although the proposed N onattainment Area occupies townships in both

Pinal and Gila Counties, the area is under ADEQ’s jurisdiction and therefore does not pose jurisdictional

conflicts. As the state has no jurisdiction within the interior boundaries of Indian reservations, the

recommended Nonattainment Area excludes all of Indian Country.

4.9 Level of Control of Emission Sources

In its analysis ADEQ considered existing control m easure applicability areas. In general, emissions

control programs are implemented at point sources and in areas with violations of the NAAQS. For

example, the existing Hayden PM 10 

# and SO 2 

# Nonattainment Areas require numerous pollution control

measures to address air pollution in the Hayden area. Appendix D contains a complete list of control

measures and technologies required by the operating permit issued by ADEQ for the ASARCO smelter

and concentrator. The list also includes several existing federally enforceable control measures that were

included in the Hayden PM 10 

# Nonattainment Area SIP submitted to EPA in September 1989 and the

# 22 Hayden SO 2 

# Nonattainment Area SIP submitted to EPA in July 2002. As the forthcoming Pb SIP is

developed, the status and scope of implementation for each control measure will be reviewed.

4.10 Nonattainment Area Summary of Criteria Analysis

ADEQ reviewed the nine criteria outlined in EPA's gui dance and determined that portions of Gila and

Pinal Counties meet the criteria for inclusion in a Pb Nonattainment Area. The recommended area

includes townships in the existing PM 10 

# and SO 2 

# planning areas. Because the most likely source of the

high Pb concentrations is the copper concentra ting and smelting operations at the ASARCO Ray

Complex, this area represent the de facto impact area of that facility. Table 4-3 summarizes the data and

information supporting the Nonattainment Area recommendation.

# 23 Table 4-3

Summary of Nine Criteria Analysis for the Proposed Hayden Pb Nonattainment Area

Criteria Factors Supporting the Recommended

Nonattainment Area Boundary Factors Supporting the Exclusion of

Portions of Gila and Pinal Counties

Air Quality

Data The proposed Nonattainment Area includes the

location of the Hayden Maintenance Building

monitor that recorded three Pb concentrations

exceeding the NAAQS. Monitoring data collected in Miami is indeterminate;

therefore ADEQ is recommending the Miami area be

designated as attainment/unclassifiable.

Emissions

Data Emissions data confirm the Hayden ASARCO

smelter and concentrator is the largest source of

Pb emissions in the proposed Nonattainment

Area. The two significant stationary sources of Pb emissions

in Gila County are the Miami and Hayden smelters

and concentrators. The 

# recommended

Nonattainment Area is identical to the existing

Hayden SO 2 

# Nonattainment Area.

Population

Density and

Degree of

Urbanization The area recommended for nonattainment is in

one of the least populated and undeveloped

regions of the state. Gila County has very low population and employment

densities. The highest density levels follow areas of

private land ownership; however, less than 4 percent

of Gila County is under private ownership. Private

ownership in Pinal County totals 26 percent; however,

the eastern regions of the county near Hayden are

predominantly publicly owned and limit further

development.

Traffic and

Commuting

Patterns The proposed Nonattainment Area includes

Highways 177 and 77, arterials with the highest

traffic counts in the area. Census data indicates the number of Gila County

residents commuting to Maricopa, Pima, or Pinal

Counties account for less than 10 percent of those who

commute to work within Gila County. In addition,

since the introduction of unleaded gasoline, traffic is

no longer a significant source of Pb emissions.

Growth Rates

and Patterns Significant growth is not pr ojected in the Hayden

area during the potentia l mainteance period

(2011-2031). Due to constrained land use patterns, both Gila and

Pinal Counties have a low potential for growth.

Meteorology The recommended Nonattainment Area includes

a portion of the Gila River Airshed where the

ASARCO Ray Complex is located. The regions of Gila and Pinal Counties that are not in

the Gila River Airshed are not impacted by emissions

from the ASARCO Ray Complex.

Geography/

Topography The proposed Nonattainment Area includes

portions of the Gila River Airshed where Pb

emissions originating from the ASARCO smelter

and concentrator are likely to be dispersed. The complex mountainous terrain surrounding the

Hayden area prevents Pb emissions originating in

Hayden from affecting other regions of Gila and Pinal

Counties.

Jurisdictional

Boundaries The recommended Nonattainment Area is

continuous with the Hayden SO 2 

# Nonattainment

Area, excluding that portion within the San

Carlos Indian Reservation. The recommendation

requires no new institutional arrangements for

accomplishing required tasks. Although the

proposed Nonattainment Area includes townships

in Pinal and Gila Counties, the area is also under

the State’s jurisdiction. The portions of Gila and Pinal Counties recommended

as attainment/unclassifiable designation either lack

significant emission sources or, in the case of the

Miami area, Pb monitoring data was indeterminate.

Inclusion of these areas would not help bring the

Hayden area into attainment.

Level of

Control of

Emission

Sources The existing Hayden PM 10 

# and 

# SO 2 

# Nonattainment Area SIPs require control

measures to address non attainment with the

NAAQS. In addition, the operating permit for the

ASARCO smelter and co ncentrator contains

requirements designed to mitigate particulate

emissions, including Pb . Under the terms of the operating permit issued by

ADEQ for the ASARCO sme lter and concentrator,

ADEQ has the authority to require the implementation

of control measures and technologies necessary to

achieve attainment of the NAAQS in the

recommended Nonattainment Area.

# 24 5.0 AREA DESIGNATION RECOMMENDATIONS

ADEQ demonstrated in the preceding analysis th at most of Arizona should be designated as

attainment/unclassifiable based on the criteria established by EPA in the 2008 Pb final rule. ADEQ

considered comments made by Zephyr Environmental Corporation on behalf of ASARCO (see Appendix

F) and by the Town of Kearny (see Appendix H) prior to making final boundary determinations (for

ADEQ’s response to Zephyr’s comments, see Appendix G). The proposed Hayden Pb Nonattainment

Area encompasses all or part of the following 9 townsh ips. Those sections of Gila and Pinal Counties not

listed below are recommended as attainment/unclassifiable. The state’s proposed Pb Nonattainment Area

is illustrated in Figure 5-1.

T4S, R14E;

T4S, R15E;

T4S, R16E (except that portion in the San Carlos Indian Reservation);

T5S, R14E;

T5S, R15E;

T5S, R16E (except that portion in the San Carlos Indian Reservation);

T6S, R14E;

T6S, R15E;

T6S, R16E (except that portion in th e San Carlos Indian Reservation);

# 25 Figure 5-1

Proposed Hayden Pb Nonattainment Area

# 26 

# Appendix A

Ambient Monitoring Data

# 27 This page is intentionally blank.

# 1 Pb-PM 10 

# - Standard Conditions 3-Year Summary Statistics

Hayden - Maintenance Building AQS# 04-007-8020 AAAD# 137412

Year Month No. of

Possible

Samples No. of

Creditable

Samples Monthly

Data

Capture

(%) No. of

Extra

Samples Monthly

Average

Lead

( 

# μ g/m 3 

# ) 3-Month

Data

Capture (%) 3-Month

Average

Lead

( 

# μ g/m 3 

# )

2006-2008 COMPLIANCE VALUES

October * 2 0 0 0 0 0 0.00

November * 5 4 80 1 0.1394 27 0.07 2006

December # 5 2 40 0 0.0865 40 invalid

January # 5 4 80 0 0.1248 67 invalid

February ^ 5 5 100 0 0.0158 73 invalid

March 5 4 80 0 0.0715 87 0.07

April 5 3 60 0 0.0240 80 0.04

May ^ 5 4 80 0 0.0348 73 invalid

June 5 5 100 0 0.0262 80 0.03

July 6 5 83 0 0.0380 88 0.03

August 5 5 100 0 0.1234 94 0.06

September 5 5 100 0 0.1950 94 0.12

October 5 4 80 1 0.1214 93 0.15

November 5 5 100 0 0.0874 93 0.13 2007

December # 6 2 33 0 0.1525 71 invalid

January # 5 2 40 0 0.1045 58 invalid

February ^ 5 3 60 0 0.0377 44 invalid

March ^ 5 4 80 0 0.0400 60 invalid

April ^ 5 4 80 2 0.1193 73 invalid

May 5 5 100 2 0.0756 87 0.08

June 5 3 60 4 0.0714 80 0.09

July 5 5 100 3 0.0653 80 0.07

August ^ 5 3 60 4 0.1560 73 invalid

September 5 4 80 0 0.2880 80 0.17

October ^^ 5 4 80 1 0.1162 73 0.19

November ^^ 5 3 60 3 0.2325 73 0.21 2008

December # 5 4 80 1 0.0682 73 invalid

Invalid 3-month average due to data capture

Invalid 3-month average due to data capt ure and insufficient number of samples.

^ Data Capture <75% and does not pass the above NAAQS test, so this is not a valid 3-month average.

^^ Data Capture <75% and passes the above NAAQS test and 3-month average is valid.

# Data Capture <75% and number of samples for month in th e design value period is insufficient thus substitution/above

NAAQS test not done and 3-month average invalid.

BOLD values denote an ex ceedance of the NAAQS.

# 2 Pb-PM 10 

# - Standard Conditions 3-Year Summary Statistics

Winkelman - Hayden High School Gym AQS# 04-007-8021 AAAD# 137422

Year Month No. of

Possible

Samples No. of

Creditable

Samples Monthly

Data

Capture

(%) No. of

Extra

Samples Monthly

Average

Lead

( 

# μ g/m 3 

# ) 3-Month

Data

Capture

(%) 3-Month

Average

Lead

( 

# μ g/m 3 

# )

2006-2008 COMPLIANCE VALUES

November * 2 1 50 0 0.0110 17 0.01 2006

December * 5 3 60 0 0.0240 37 0.02

January # 5 4 80 0 0.0095 63 invalid

February 5 5 100 0 0.0224 80 0.02

March 5 5 100 0 0.0202 93 0.02

April 5 4 80 0 0.0208 93 0.02

May 5 4 80 0 0.0478 87 0.03

June 5 5 100 0 0.0508 87 0.04

July 6 5 83 0 0.0224 88 0.04

August 5 3 60 0 0.0287 81 0.03

September ^ 5 3 60 0 0.0247 68 invalid

October ^ 5 3 60 0 0.0157 60 invalid

November ^ 5 1 20 0 0.0190 47 invalid 2007

December # 6 0 0 0 0 27 invalid

January # 5 1 20 0 0.2060 13 invalid

February ^ 5 2 40 0 0.0165 20 invalid

March # 5 1 20 0 0.0040 51 invalid

April # 5 0 0 0 0 20 invalid

May ^ 5 4 80 1 0.0410 33 invalid

June ^ 5 5 100 3 0.0303 60 invalid

July 5 5 100 3 0.0228 93 0.03

August # 5 1 20 1 0.0320 73 invalid

September ^ 5 4 80 2 0.0128 67 invalid

October ^ 5 5 100 3 0.0305 50 invalid

November 6 4 67 4 0.0295 80 0.01 2008

December 5 3 60 2 0.0234 76 0.03

Invalid 3-month average due to data capture

Invalid 3-month average due to data capt ure and insufficient number of samples.

* November and December 2006 are not complete as there are no data for the rest of 2006 (mainly September and

October 2006) and will not be "tested".

^ Data Capture <75% and does not pass the above NAAQS test, so this is not a valid 3-month average.

# Data Capture <75% and number of samples for month in th e design value period is insufficient thus substitution/above

NAAQS test not done and 3-month average invalid.

# 3 Hayden PM 10 

# Data in μg/m 3 

# Winkelman PM 10 

# Data in μg/m 3



# PM 10 

# Pb PM 10 

# Pb Sample

Date Result Qualifier Result Qualifier Sample

Date Result Qualifier Result Qualifier

2006 2006

10/22/06 0.84 0.0024 *

11/03/06 38.98 0.0266

11/09/06 37.9 0.0141

11/11/06 30.62 0.044

11/21/06 51.53 0.5947 11/21/06 18.25 0.0033 *

11/27/06 31.58 0.0191 11/27/06 10.39 0.0114

12/03/06 48.2 0.1595 12/03/06 6.63 0.0027 *

12/09/06 36.71 12/09/06 8.21 0.003 *

12/15/06 12.39 0.0261

12/21/06 0.46 0.0027 * 12/21/06 11.88 0.0195

12/27/06 15.01 0.0143 12/27/06 15.66 0.0275

Average 29.183 0.0897 Average 11.916 0.0134

2007 2007

01/02/07 11.38 0.0153

01/08/07 39.67 0.47 01/08/07 4.37 0.0027 *

01/14/07 16.56 0.0167 01/14/07 10.88 0.0109

01/20/07 12.1 0.0043 01/20/07 6.01 0.0050

01/26/07 17.36 0.0099 01/26/07 7.29 0.0085

02/01/07 9.81 0.005 02/01/07 6.45 0.0051

02/07/07 33.2 0.0103 02/07/07 8.82 0.0140

02/13/07 18.55 0.037 02/13/07 11.02 0.0329

02/19/07 27.46 0.0173 02/19/07 22.70 0.0525

02/25/07 8.64 0.0105 02/25/07 8.60 0.0097

03/03/07 49.49 0.1444 03/03/07 7.25 0.0030

03/09/07 R R R R 03/09/07 15.99 0.0178

03/15/07 37.48 0.032 03/15/07 17.69 0.0185

03/21/07 67.75 0.0885 03/21/07 25.40 0.0514

03/27/07 54.27 0.0227 03/27/07 82.41 0.0121

04/02/07 30.53 0.028 04/02/07 15.56 0.0170

04/08/07 43.09 0.0143

04/14/07 12.99 0.0027 *

04/20/07 63.06 0.0122 04/20/07 35.27 0.0050

04/26/07 34.02 0.0324 04/26/07 22.62 0.0479

05/02/07 R R R R 05/02/07 R R R

05/08/07 32.23 0.0774 05/08/07 31.15 0.0798

05/14/07 45.75 0.0257 05/14/07 28.32 0.0699

05/20/07 50.34 0.0127 05/20/07 23.01 0.0117

05/26/07 50.73 0.0253 05/26/07 27.58 0.0325

06/01/07 91.48 0.046 06/01/07 28.91 0.0724

06/07/07 51.99 0.0048 06/07/07 42.83 0.0153

06/13/07 51.31 0.0238 06/13/07 21.33 0.0276

06/19/07 57.51 0.0298 06/19/07 29.25 0.0573

06/25/07 47.9 0.0299 06/25/07 26.37 0.0830

07/01/07 69.08 0.0382 07/01/07 24.90 0.0465

07/07/07 R R R R 07/07/07 17.90 0.0076

07/13/07 35.27 0.021 07/13/07 27.11 0.0256

07/19/07 46.16 0.0986 07/19/07 27.28 0.0266

# 4 Hayden PM 10 

# Data in μg/m 3 

# Winkelman PM 10 

# Data in μg/m 3



# PM 10 

# Pb PM 10 

# Pb Sample

Date Result Qualifier Result Qualifier Sample

Date Result Qualifier Result Qualifier

07/25/07 25.2 0.0136 07/25/07 16.22 0.0080

07/31/07 19.49 0.0208

08/06/07 9.78 0.0142 08/06/07 1.53 0.0024 *

08/12/07 39.68 0.0268 08/12/07 12.47 0.0272

08/18/07 45.27 0.0429 08/18/07 21.93 0.0342

08/24/07 32.48 0.0182 08/24/07 21.81 0.0257

08/30/07 39.05 0.517 08/30/07 8.36 0.0024 *

09/05/07 48.19 0.0294 09/05/07 25.12 0.0177

09/11/07 44.89 0.8362 09/11/07 6.68 0.0024 *

09/17/07 45.13 0.0803 09/17/07 35.27 0.003 *

09/23/07 17.65 0.0033 09/23/07 16.16 0.0146

09/29/07 43.35 0.0273 09/29/07 24.66 0.0438

10/05/07 24.62 0.0035 10/05/07 17.34 0.0040

10/11/07 32.19 0.046

10/17/07 59.08 0.0194 10/17/07 44.04 0.0255

10/22/07 54.57 0.5156

10/27/07 34.06 0.0242 10/27/07 14.24 0.0186

11/01/07 32.98 0.0202 11/01/07 30.86 0.0196

11/07/07 69.12 0.3183

11/13/07 53.97 0.0049

11/19/07 55.97 0.042

11/25/07 28.99 0.0538

12/07/07 13.13 0.2119

12/13/07 23.6 0.0944

Average 39.27 0.0838 Average 21.43 0.0240

2008 2008

01/12/08 25.89 0.1487 01/12/08 17.61 0.2067

01/18/08 18.26 0.0613

02/17/08 11.11 0.0291 02/17/08 10.44 0.0181

02/23/08 8.32 0.0081 02/23/08 9.8 0.0155

02/29/08 19.6 0.0764

03/06/08 13.64 0.0697

03/12/08 R R R

03/14/08 37.8 0.064

03/20/08 29.53 0.0152

03/26/08 28.67 0.0125

03/28/08 2.19 0.0024 *

03/30/08 1.16 0.0024 *

03/31/08 12.47 0.0044

04/05/08 29.05 0.0305

04/12/08 29.12 0.4627

04/15/08 33.35 0.059

04/18/08 44.78 0.1272

04/21/08 26.71 0.0299

04/24/08 24.15 0.0097

05/10/08 56.63 0.022

05/13/08 40.06 0.1163

05/16/08 23.85 0.288 05/16/08 17.8 0.0101

# 5 Hayden PM 10 

# Data in μg/m 3 

# Winkelman PM 10 

# Data in μg/m 3



# PM 10 

# Pb PM 10 

# Pb Sample

Date Result Qualifier Result Qualifier Sample

Date Result Qualifier Result Qualifier

05/19/08 32.67 0.0236 05/19/08 15.58 0.0309

05/22/08 93.75 0.0166 05/22/08 26.05 0.0375

05/28/08 24.63 0.0361 05/28/08 59.53 0.0301

05/31/08 30 0.028 05/31/08 24.74 0.0986

06/03/08 33.15 0.0547

06/06/08 17.26 0.0185

06/09/08 34.74 0.0843 06/09/08 12.45 0.0227

06/12/08 53.37 0.0746 06/12/08 26.09 0.0246

06/15/08 60.94 0.1255 06/15/08 31.39 0.0459

06/18/08 40.22 0.033 06/18/08 26.51 0.0586

06/21/08 60.24 0.1123 06/21/08 34.04 0.0264

06/24/08 32.37 0.0579

06/27/08 13.32 0.0075

06/30/08 11.06 0.0032

07/03/08 26.58 0.0294

07/06/08 17.76 0.0141

07/09/08 28.62 0.3432 07/09/08 6.56 0.0027 *

07/12/08 12.91 0.0062 07/12/08 10.33 0.0067

07/15/08 24.81 0.0191 07/15/08 16.18 0.0175

07/18/08 32.8 0.047

07/21/08 11.37 0.0205 07/21/08 7.54 0.01

07/24/08 18.32 0.0731 07/24/08 12.61 0.0721

07/27/08 25.49 0.0011 07/27/08 19.92 0.0089

07/30/08 23.55 0.0132 07/30/08 19.42 0.0261

08/02/08 24.29 0.0347 08/02/08 21.55 0.0349

08/05/08 32.16 0.1629

08/08/08 40.84 0.457

08/11/08 35.79 0.0417

08/14/08 15.99 0.1646

08/17/08 23.43 0.1981

08/20/08 32.1 0.0363

08/23/08 16.38 0.0306

08/29/08 9.26 0.003 *

09/01/08 9.2 0.0153

09/04/08 16.02 0.0163

09/07/08 10.13 0.0067

09/12/08 40.7 0.0136 09/12/08 35.42 0.0082

09/18/08 29.01 0.0462 09/18/08 11.63 0.0189

09/24/08 34.77 0.1263 09/24/08 10.43 0.0141

09/30/08 56.77 0.9676 09/30/08 19.94 0.0033 *

10/06/08 32.73 0.02 10/06/08 17.35 0.0201

10/12/08 24.23 0.0234

10/13/08 16.09 0.0529

10/16/08 9.58 0.0124

10/19/08 12.96 0.0247

10/22/08 48.73 0.1968 10/22/08 17.79 0.0100

10/25/08 29.92 0.042 10/25/08 17.34 0.0382

10/28/08 45.02 0.3002 10/28/08 19.02 0.0041

# 6 Hayden PM 10 

# Data in μg/m 3 

# Winkelman PM 10 

# Data in μg/m 3



# PM 10 

# Pb PM 10 

# Pb Sample

Date Result Qualifier Result Qualifier Sample

Date Result Qualifier Result Qualifier

10/31/08 20.63 0.0848

11/03/08 15.95 0.0109

11/06/08 10.4 0.0144

11/09/08 177.21 0.0887 11/09/08 77.09 0.0824

11/12/08 32.81 0.0071 11/12/08 16.87 0.0263

11/15/08 23.72 0.0033 *

11/18/08 13.77 0.0033 *

11/21/08 100.34 0.984 11/21/08 43.55 0.0030

11/24/08 37.59 0.111 11/24/08 16.64 0.0066

11/27/08 14.12 0.1731 11/27/08 7.43 0.0314

11/30/08 21.24 0.0328 11/30/08 12.91 0.0647

12/03/08 12.2 0.0377

12/06/08 14.830 0.0113 12/06/08 9.43 0.0266

12/09/08 12.7 0.0285

12/12/08 17.500 0.1094 12/12/08 8.583 0.0103

12/15/08 20.500 0.1166

12/24/08 9.042 0.0168

12/27/08 9.747 0.0944

12/30/08 13.330 0.0115

Average 33.326 0.1128 Average 18.36 0.0276

* = The result is less than three times the level of uncertainty.

NA = Not available

R = Rejected due to filter damage

# 7 Pb-PM 10 

# Standard Conditions 3-Year Summary Statistics

JLG Supersite AQS# 04-013-9997 AAAD# 16328

Year Month No. of

Possible

Samples No. of

Creditable

Samples Monthly

Data

Capture

(%) No. of

Extra

Samples Monthly

Average

Lead

( 

# μ g/m 3 

# ) 3-Month

Data

Capture (%) 3-Month

Average Lead

( 

# μ g/m 3 

# )

2006-2008 COMPLIANCE VALUES



# January * 5 5 100 0 0.0055 33 0.01

February ** 5 4 80 0 0.0060 60 0.01

March 5 5 100 0 0.0022 93 0.00

April 5 5 100 0 0.0032 93 0.00

May 5 5 100 0 0.0032 100 0.00

June 5 4 80 0 0.0030 93 0.00

July 5 5 100 0 0.0018 93 0.00

August 5 5 100 0 0.0028 93 0.00

September 5 5 100 0 0.0026 100 0.00

October 5 5 100 0 0.0026 100 0.00

November 5 5 100 0 0.0080 100 0.00 2006

December 6 6 100 0 0.0085 100 0.01

January 5 5 100 0 0.0040 100 0.01

February 4 4 100 0 0.0038 100 0.01

March 6 6 100 0 0.0035 100 0.00

April 5 4 80 0 0.0045 93 0.00

May 5 5 100 0 0.0028 93 0.00

June 5 5 100 0 0.0042 93 0.00

July 5 5 100 0 0.0040 100 0.00

August 5 4 80 0 0.0025 93 0.00

September 5 5 100 0 0.0026 93 0.00

October 5 5 100 0 0.0044 93 0.00

November 5 5 100 0 0.0086 100 0.01 2007

December 5 5 100 0 0.0058 100 0.01

January 6 6 100 0 0.0028 100 0.01

February 4 4 100 0 0.0063 100 0.00

March 6 5 83 0 0.0040 94 0.00

April 5 4 80 0 0.0080 88 0.01

May 5 5 100 0 0.0046 88 0.01

June 5 5 100 0 0.0036 93 0.01

July 5 4 80 0 0.0018 93 0.00

August 5 4 80 0 0.0015 87 0.00

September 5 4 80 0 0.0038 80 0.00

October 5 5 100 0 0.0044 87 0.00

November 5 5 100 0 0.0066 93 0.00 2008

December 5 5 100 0 0.0052 100 0.01

* January 2006 is not complete as there are no data for November and December 2005.

** February 2006 is not complete as there are no data for December 2005.

Invalid 3-month average due to data capture.

Invalid 3-month average due to data capture and insufficient number of samples.

# 8 JLG Supersite PM 10 

# Data in ( 

# μ g/m 3 

# )

PM 10 

# Pb Sample

Date Result Qualifier Result Qualifier

2006

1/5/2006 39 0.005

1/11/2006 60 0.008

1/17/2006 41 0.005

1/23/2006 35 0.004

2/1/2006 47 0.007

2/4/2006 AN AN

2/10/2006 41 0.005

2/16/2006 62 0.004

2/22/2006 45 0.008

2/28/2006 34 0.006

3/9/2006 24 0.002

3/12/2006 9 0.001

3/18/2006 21 0.002

3/24/2006 27 0.004

3/30/2006 22 0.002

4/5/2006 35 0.002

4/11/2006 24 0.004

4/17/2006 32 0.003

4/23/2006 28 0.003

4/29/2006 27 0.004

5/5/2006 31 0.003

5/11/2006 43 0.004

5/19/2006 30 0.003

5/23/2006 27 0.004

5/29/2006 27 0.002

6/4/2006 35 0.003

6/10/2006 20 0.002

6/16/2006 28 0.005

6/27/2006 31 0.002

6/28/2006 AF AF

7/4/2006 26 0.002

7/10/2006 23 0.002

7/16/2006 69 0.002

7/22/2006 28 0.002

7/28/2006 16 0.001

8/3/2006 29 0.002

8/9/2006 57 0.003

8/15/2006 19 0.003

8/21/2006 44 0.004

8/27/2006 21 0.002

9/2/2006 25 0.003

9/8/2006 10 0.001

9/14/2006 20 0.003

9/20/2006 29 0.002

9/26/2006 32 0.004

# 9 JLG Supersite PM 10 

# Data in ( 

# μ g/m 3 

# )

PM 10 

# Pb Sample

Date Result Qualifier Result Qualifier

10/2/2006 31 0.005

10/8/2006 26 0.002

10/14/2006 15 0.001

10/20/2006 37 0.004

10/26/2006 16 0.001

11/1/2006 51 0.006

11/7/2006 57 0.007

11/13/2006 55 0.009

11/19/2006 53 0.01

11/25/2006 38 0.008

12/1/2006 70 0.01

12/7/2006 44 0.005

12/13/2006 67 0.009

12/19/2006 33 0.005

12/25/2006 46 0.005

12/31/2006 91 0.017

2007

1/9/2007 30 0.004

1/12/2007 26 0.002

1/18/2007 25 0.005

1/24/2007 38 0.006

1/30/2007 19 0.003

2/5/2007 29 0.005

2/11/2007 31 0.005

2/17/2007 22 0.003

2/23/2007 27 0.002

3/1/2007 22 0.002

3/7/2007 40 0.005

3/13/2007 43 0.005

3/19/2007 28 0.003

3/25/2007 16 0.003

3/31/2007 22 0.003

4/6/2007 33

4/12/2007 85 a 0.006 (a)

4/18/2007 45 0.006

4/24/2007 14 0.002

4/30/2007 33 0.004

5/6/2007 14 0.001

5/12/2007 32 0.003

5/18/2007 31 0.004

5/24/2007 31 0.003

5/30/2007 31 0.003

6/5/2007 43 0.005

6/11/2007 30 0.007

6/17/2007 31 0.004

6/23/2007 30 0.002

# 10 JLG Supersite PM 10 

# Data in ( 

# μ g/m 3 

# )

PM 10 

# Pb Sample

Date Result Qualifier Result Qualifier

6/29/2007 27 0.003

7/5/2007 44 0.006

7/11/2007 28 0.004

7/17/2007 46 0.003

7/23/2007 36 0.004

7/29/2007 14 0.003

8/8/2007 29 0.003

8/10/2007 AN AF (AN)

8/16/2007 28 0.002

8/22/2007 27 0.002

8/28/2007 27 0.003

9/3/2007 23 0.002

9/9/2007 28 0.002

9/15/2007 48 0.003

9/21/2007 42 0.002

9/27/2007 33 0.004

10/3/2007 30 0.004

10/9/2007 37 0.004

10/15/2007 36 0.004

10/21/2007 57 0.005

10/27/2007 43 0.005

11/2/2007 56 0.008

11/8/2007 70 0.012

11/14/2007 47 0.006

11/20/2007 49 0.009

11/26/2007 50 0.008

12/4/2007 45 0.006

12/8/2007 17 0.002

12/14/2007 25 0.003

12/20/2007 40 0.012

12/26/2007 30 0.006

2008

01/01/2008 13 0.001

01/07/2008 10 0.001

01/13/2008 29 0.005

01/19/2008 33 0.006

01/25/2008 16 0.003

01/31/2008 10 0.001

02/06/2008 24 0.006

02/12/2008 40 0.011

02/18/2008 33 0.004

02/24/2008 22 0.004

03/01/2008 30 0.008

03/07/2008 26 0.003

03/13/2008 33 0.005

03/19/2008 AF (AF)

# 11 JLG Supersite PM 10 

# Data in ( 

# μ g/m 3 

# )

PM 10 

# Pb Sample

Date Result Qualifier Result Qualifier

03/29/2008 31 0.002

03/31/2008 34 0.002

04/06/2008 27 0.008

04/12/2008 20 0.007

04/18/2008 AJ AJ

04/24/2008 41 0.009

04/30/2008 33 0.008

05/06/2008 22 0.007

05/12/2008 49 0.009

05/18/2008 23 0.003

05/24/2008 22 0.001

05/30/2008 28 0.003

06/05/2008 102 0.003

06/11/2008 31 0.002

06/17/2008 39 0.004

06/23/2008 34 0.004

06/29/2008 31 0.005

07/05/2008 23 0.001

07/11/2008 AS AM (AS)

07/17/2008 22 0.002

07/23/2008 24 0.003

07/29/2008 23 0.001

08/04/2008 27 0.001

08/10/2008 38 0.001

08/16/2008 17 0.002

08/22/2008 30 0.002

08/28/2008 AV AV

09/03/2008 AN AN

09/09/2008 24 0.003

09/15/2008 21 0.003

09/21/2008 19 0.001

09/27/2008 25 0.008

10/03/2008 38 0.003

10/09/2008 31 0.005

10/15/2008 19 0.002

10/21/2008 30 0.004

10/27/2008 65 0.008

11/02/2008 34 0.008

11/08/2008 38 0.006

11/14/2008 38 0.006

11/20/2008 44 0.006

11/26/2008 26 0.007

12/04/2008 41 0.009

12/08/2008 34 0.008

12/14/2008 23 0.002

12/20/2008 38 0.006

# 12 JLG Supersite PM 10 

# Data in ( 

# μ g/m 3 

# )

PM 10 

# Pb Sample

Date Result Qualifier Result Qualifier

12/26/2008 38 0.001

EPA Air Quality System (AQS) Mi ssing Value and Qualifier codes:

a Exceptional Event flag requested for this sample

AF Scheduled but not collected

AJ Filter Damage

AM Miscellaneous Void

AN Machine Malfunction

AS Poor Quality Assurance Results

# 1 

# Appendix B

3-Month Average Lead Concentration Calculations

For the Hayden Maintenance Yard Monitor

# 1 This page is intentionally blank.

# Appendix B

3-Month Average Lead Con centration Calculations

For the Hayden Maintenance Yard Monitor

2007 Monthy/3-Month Summary – Pb-PM10 Standard Conditions

Invalid 3-month average due to data capture

Invalid 3-month average due to data capture and insufficient number of samples.

Month No. of

Possible

Samples No. of

Creditable

Samples Monthly

Data

Capture

(%) No. of

Extra

Samples Monthly

Average

Lead

(μg/m 3 

# ) 3-Month

Data

Capture

(%) 3-Month

Average

Lead

(μg/m 3 

# )

January # 5 4 80 0 0.1248 67 0.12

February ^ 5 5 100 0 0.0158 73 0.08

March 5 4 80 0 0.0715 87 0.07

April 5 3 60 0 0.0240 80 0.04

May ^ 5 4 80 0 0.0348 73 0.04

June 5 5 100 0 0.0262 80 0.03

July 6 5 83 0 0.0380 88 0.03

August 5 5 100 0 0.1234 94 0.06

September 5 5 100 0 0.1950 94 0.12

October 5 4 80 1 0.1214 93 0.15

November 5 5 100 0 0.0874 93 0.13

December # 6 2 33 0 0.1525 71 0.12

Valid 3-month average (may include data substitution).

^ Data Capture <75% and average is below the NAAQS, so data substitution is not allowed. As a result,

this is not a valid 3-month average.

# Data Capture <75% and number of samples for mont h in the design value period is insufficient; thus

data substitution [See 40 CFR 50 Appendix R § 4(c)(i i)(A)] not done and 3-month average is invalid.

Above the NAAQS test - February 2007

Month No. of

Possible

Samples No. of

Creditable

Samples Monthly

Data

Capture

(%) No. of

Extra

Samples Monthly

Average

Lead

(μg/m 3 

# ) 3-Month

Data

Capture

(%) 3-Month

Average

Lead

(μg/m 3 

# )

December ~ 5 3 60 0 0.0613

January 5 4 80 0 0.1248

February 5 5 100 0 0.0158 80 0.07

~ December had 1 sample substituted with 0.011 μg/m 3 

# from 12/6/2008 for 2006-2008 Design Value

period to get the February 2007 Data Capture >75%.

Above the NAAQS test - May 2007

Month No. of

Possible

Samples No. of

Creditable

Samples Monthly

Data

Capture

(%) No. of

Extra

Samples Monthly

Average

Lead

(μg/m 3 

# ) 3-Month

Data

Capture

(%) 3-Month

Average

Lead

(μg/m 3 

# )

March 5 4 80 0 0.0715

April ~ 5 4 80 0 0.0203

May 5 4 80 0 0.0348 80 0.04

~ April had 1 sample substituted with 0.009 μg/m 3 

# from 4/24/2008 for 2006-2008 Design Value period to

get the May 2007 Data Capture >75%.

# 2008 Monthy/3-Month Summary – Pb-PM10 Standard Conditions

Invalid 3-month average due to data capture

Invalid 3-month average due to data capture and insufficient number of samples.

Month No. of

Possible

Samples No. of

Creditable

Samples Monthly

Data

Capture

(%) No. of

Extra

Samples Monthly

Average

Lead

(μg/m 3 

# ) 3-Month

Data

Capture

(%) 3-Month

Average

Lead

(μg/m 3 

# )

January # 5 2 40 0 0.1045 58 0.11

February ^ 5 3 60 0 0.0377 44 0.10

March ^ 5 4 80 0 0.0400 60 0.06

April ^ 5 4 80 2 0.1193 73 0.07

May 5 5 100 2 0.0756 87 0.08

June 5 3 60 4 0.0714 80 0.09

July 5 5 100 3 0.0653 80 0.07

August ^ 5 3 60 4 0.1560 73 0.10

September 5 4 80 0 0.2880 80 0.17

October ^^ 5 4 80 1 0.1162 73 0.19

November ^^ 5 3 60 3 0.2325 73 0.21

December # 5 4 80 1 0.0682 73 0.14

Valid 3-month average (may include data substitution).

^ Data Capture <75% and average is below the NAAQS, so data s ubstitution is not allowed. As a result, this is not a

valid 3-month average.

^^ Data Capture <75% and average is the above the NAAQ S; 40 CFR 50 Appendix R § 4(c )(ii)(A) allows use of the

LOWEST data value recorded during the same month ov er the design period as a substitute for the missing

sample(s) up to minimum 75% data capture. This 3-month average is valid.

# Data Capture <75% and number of samples for month in the design value period is insufficient; thus, data

substitution not done and 3-month average is invalid.



# Above the NAAQS test - February 2008

Month No. of

Possible

Samples No. of

Creditable

Samples Monthly

Data

Capture

(%) No. of

Extra

Samples Monthly

Average

Lead

(μg/m 3 

# ) 3-Month

Data

Capture

(%) 3-Month

Average

Lead

(μg/m 3 

# )

December ~ 6 6 100 0 0.0522

January ~ 5 4 80 0 0.0543

February 5 3 60 0 0.0377 80 0.05

~ December had 4 samples substituted with 0.002 μg/m 3 

# from 12/21/2006 and January had 2 samples substituted

with 0.004 μg/m 3 

# from 1/20/2007 for 2006-2008 Design Value period to get the February 2008 Data Capture >75%.



# Above the NAAQS test - March 2008

Month No. of

Possible

Samples No. of

Creditable

Samples Monthly

Data

Capture

(%) No. of

Extra

Samples Monthly

Average

Lead

(μg/m 3 

# ) 3-Month

Data

Capture

(%) 3-Month

Average

Lead

(μg/m 3 

# )

January ~ 5 5 100 0 0.0442

February 5 3 60 0 0.0377

March 5 4 80 1 0.0400 80 0.04

~ January had 3 samples substituted with 0.004 μg/m 3 

# from 1/20/2007 for 2006-2008 Design Value period to get the

March 2008 Data Capture >75%.

# Above the NAAQS test - April 2008

Month No. of

Possible

Samples No. of

Creditable

Samples Monthly

Data

Capture

(%) No. of

Extra

Samples Monthly

Average

Lead

(μg/m 3 

# ) 3-Month

Data

Capture

(%) 3-Month

Average

Lead

(μg/m 3 

# )

February ~ 5 4 80 0 0.0295

March 5 4 80 1 0.0400

April 5 4 80 2 0.1193 80 0.06

~ February had 1 sample substituted with 0.005 μg/m 3 

# from 2/1/2007 for 2006-2008 Design Value period to get the

April 2008 Data Capture >75%.



# Above the NAAQS test - August 2008

Month No. of

Possible

Samples No. of

Creditable

Samples Monthly

Data

Capture

(%) No. of

Extra

Samples Monthly

Average

Lead

(μg/m 3 

# ) 3-Month

Data

Capture

(%) 3-Month

Average

Lead

(μg/m 3 

# )

June ~ 5 4 80 4 0.0630

July 5 5 100 3 0.0653

August 5 3 60 4 0.1560 80 0.09

~ June had 1 sample substituted with 0.004 μg/m 3 

# from 6/7/2007 for 2006-2008 Design Value period to get the

August 2008 Data Capture >75%.



# Above the NAAQS test - October 2008

Month No. of

Possible

Samples No. of

Creditable

Samples Monthly

Data

Capture

(%) No. of

Extra

Samples Monthly

Average

Lead

(μg/m 3 

# ) 3-Month

Data

Capture

(%) 3-Month

Average

Lead

(μg/m 3 

# )

August ~ 5 4 80 4 0.1383

September 5 4 80 0 0.2880

October 5 4 80 1 0.1162 80 0.18

~ August had 1 sample substituted with 0.014 μg/m 3 

# from 8/6/2007 for 2006-2008 Design Value period to get the

October 2008 Data Capture >75%.



# Above the NAAQS test - November 2008

Month No. of

Possible

Samples No. of

Creditable

Samples Monthly

Data

Capture

(%) No. of

Extra

Samples Monthly

Average

Lead

(μg/m 3 

# ) 3-Month

Data

Capture

(%) 3-Month

Average

Lead

(μg/m 3 

# )

September 5 4 80 0 0.2880

October 5 4 80 1 0.1162

November ~ 5 4 80 3 0.1999 80 0.20

~ November had 1 sample substituted with 0.004 μg/m 3 

# from 11/13/2007 for 2006-2008 Design Value period to get

the November 2008 Data Capture >75%.

# 1 This page is intentionally blank.

# 1 

# Appendix C

CH2M Hill Technical Memorandum: Preliminary Evaluation of PM 10 

# and Metals

Concentrations from October 2007 to December 2008 in Ambient Air at the Hayden

and Winkelman Monitoring Stations

# 1 This page is intentionally blank.

# PHX/\\MADISON\PROJ\USEPA\335404WA298ASARCO\GSA CONTRACT\DATA EVALUATION REPORT\FINAL REPORT\AIR DATA EVALUATION REPORT.DOC 1



# T E C H N I C A L M E M O R A N D U M



# Preliminary Evaluation of PM 10 

# and Metals

Concentrations from October 2007 to December 2008

in Ambient Air at the Hayden and Winkelman

Monitoring Stations

ASARCO LLC Hayden Plant Site, Arizona

PREPARED FOR: 

# John Hillenbrand/ US EPA

PREPARED BY: 

# Prabhat Bhargava/CH2M HILL

COPIES: 

# Allan Erickson/CH2M HILL

DATE: 

# December 31, 2008

PROJECT NUMBER: 

# 381679



# Introduction

The purpose of this Technical Memorandum (TM) is to provide an updated evaluation of air

data collected after the “ Remedial Investigation Report for the ASARCO LLC Hayden Plant Site ”

(RI Report, CH2M HILL, August 2008) was produced. The RI Report presented the air

monitoring results for the period October 22, 2006 through November 7, 2008. This TM

describes the air monitoring results for PM 10 

# and selected metals (including arsenic, lead,

copper, cadmium, and chromium) collected at the Hayden and Winkelman stations during

the period of November 13, 2007 through December 9, 2008.

The air investigation involves collection of meteorological, PM 10 

# , and metals data from two

air monitors installed as part of this study. The Hayden monitoring station was placed on

the roof of the Town of Hayden maintenance building. The Winkelman monitoring station

was placed on the roof of the Hayden High School gymnasium (located in Winkelman).

The air monitoring stations were programmed to collect samples on pre-loaded filters for a

24-hour period from midnight to midnight. One 24-hour sample was collected every 6 th 

# -day

until an increase of sampling frequency (every 3 rd 

# -day) was implemented on March 28, 2008.

The meteorological data (average ambient temperature, relative humidity, wind speed, and

wind direction) are collected every 30 minutes on a continuous daily basis.

The sample filters collected during these periods were submitted for analysis of PM 10 

# by

gravimetric method and for metals analysis of the PM 10 

# fraction by EPA Compendium

Method IO-3.3 using X-ray Fluorescence Spectroscopy. All laboratory analyses were

conducted by Chester LabNet of Tigard, Oregon.

Sample collection was not available from November 13, 2007 to January 12, 2008 and April

1, 2008 to May 15, 2008 at the Winkelman station due to air sampling pump failure within

# ASARCO LLC HAYDEN PLANT SITE, ARIZONA

PHX/\\MADISON\PROJ\USEPA\335404WA298ASARCO\GSA CONTRACT\DATA EVALUATION REPORT\FINAL REPORT\AIR DATA EVALUATION REPORT.DOC 2 

# the unit, which required replacement of the pump. Furthermore, due to apparent power

surging issues at the Hayden station, 13 samples (October through December 2008) were not

collected. 17 air filter samples were rejected because of torn filters received at the laboratory

or the quantitation limits for some analytes were rejected due to QC outliers that did not

meet the minimum requirements for acceptability. Despite the absence of these Hayden and

Winkelman samples, the resulting data set is considered sizable enough for evaluation

purposes in this TM.

The air monitoring results from the Hayden and Winkelman air monitoring stations are

compared with background concentrations from the Organ Pipe National Monument

station, as provided in the RI Report. The existing background dataset referenced in the RI

Report was used for the current evaluation in this TM.



# Air Quality Results in Hayden and Winkelman Stations

Following validation of the laboratory data, summary tables were created containing the

results and any data qualifiers. Tables 1 and 2 provide a summary of the air sampling

results for PM 10 

# and metals for the Hayden and Winkelman stations, respectively. These

tables also show the regulatory comparison criteria and a 24-hour windrose for each day

PM 10 

# samples were collected.

The metals results reported by Chester LabNet include an uncertainty value, in accordance

with the XRF analytical procedure in EPA Method IO-3.3. The uncertainty measurement

represents the statistical range in which a measurement may fall. For a Gaussian

distribution, a one-sigma uncertainty would describe the range of possible values (by

adding and subtracting the uncertainty to the reported value) with 68% confidence, while a

three-sigma uncertainty would describe the range at 99.7% confidence. The uncertainties

reported by the laboratory are one sigma uncertainties. Based on discussions with the

laboratory and a review of practices used to evaluate air quality data at other sites, a three

sigma uncertainty was used for review of data for this Site. When a measured value is above

the three-sigma MDL uncertainty, it is considered a detected result, and is reported as is. If

it is found below the three-sigma uncertainty, it is considered a nondetected result, and the

three-sigma uncertainty value is provided in the summary tables. For some samples, the

three-sigma MDL uncertainty is above the regulatory criteria, as indicated in Tables 1 and 2.

This data evaluation approach is identical to the one followed in the RI Report.

In general, the concentrations of PM 10 

# and metals at the two stations were likely affected by

relative locations of the emission sources, the variation of the emission rates of the sources,

and meteorological conditions such as wind direction and speed.



# PM 10 

# Concentration Summary

Following data validation there are 54 available results for PM 10 

# at the Hayden station and

54 results available for the Winkelman station. The average PM 10 

# value for the Hayden

station (34.7 μg/m 3 

# ) over this period is about 1.9 times the average PM 10 

# value at the

Winkelman station (17.9 μg/m 3 

# ). These concentrations both exceed the Organ Pipe station

background average value (16 μg/m 3 

# ).

Figure 1 shows the comparison of PM 10 

# concentrations at the two RI stations and the

average wind speed monitored at the Hayden station (since wind speeds were generally

# ASARCO LLC HAYDEN PLANT SITE, ARIZONA

PHX/\\MADISON\PROJ\USEPA\335404WA298ASARCO\GSA CONTRACT\DATA EVALUATION REPORT\FINAL REPORT\AIR DATA EVALUATION REPORT.DOC 3 

# similar at both stations). In general, PM 10 

# concentrations were observed to be higher at the

Hayden station than the Winkelman station. No elevated concentrations of PM 10 

# were measured at the Winkelman station if the wind was not blowing from the direction of

smelter, concentrator or tailing piles. The highest or lowest PM 10 

# concentrations at both

monitoring stations did not necessarily occur on days with the highest or lowest wind

speed, respectively.

The highest concentrations of PM 10 

# were found on November 9, 2008 at both the Hayden

(177.2 μg/m 3 

# ) station and the Winkelman (77.1 μg/m 3 

# ) station. The measured PM 10 

# concentration at the Hayden station on November 9, 2008 exceeded the NAAQS 24-hour

PM 10 

# value of 150 μg/m 3 

# . The windrose diagrams, provided in Tables 1 and 2, indicate that

the average wind speed on November 9, 2008 was moderate to high. For the Hayden

station, upwind sources of PM 10 

# emissions during the higher wind speed on that day

included the tailings impoundments (to the southwest), open areas west of Hayden (to the

west), and the track hopper, CF and Conveyer 9 area (to the southeast). For the Winkelman

station, upwind sources of PM 10 

# emissions included open spaces and tailings

impoundments (to the south and west).



# Metal Concentrations Summary

The concentrations of metals in the PM 10 

# filters, including arsenic, lead, copper, and

chromium, were evaluated for both the Hayden and Winkelman stations. The

concentrations of arsenic, lead, copper, and chromium during the monitoring period are

shown in Figures 2 through 5, respectively.



# Arsenic Concentrations at Hayden Station. Of the 54 samples collected in Hayden during the

reporting period and analyzed for metals, 46 (85%) exceeded the arsenic ambient air PRG of

0.00045 μg/m 3 

# . The five most elevated arsenic concentrations were found on November 24,

2008 (0.0469 μg/m 3 

# ); August 5, 2008 (0.0518 μg/m 3 

# ); April 12, 2008 (0.0970 μg/m 3 

# ); May 16,

2008 (0.0830 μg/m 3 

# ); September 30, 2008 (0.1554 μg/m 3 

# ).

During most of these sample periods, the prevailing wind direction was from the northeast,

and the ASARCO smelter facility was generally upwind. The maximum arsenic

concentration (0.1554 μg/m 3 

# on September 30, 2008) is about 345 times the ambient air PRG.

Although the Hayden station sample from November 09, 2008 (177.21 μg/m 3) 

# had the

highest PM 10 

# reading, an elevated concentration of arsenic was not found on this day.

The average arsenic concentration at the Hayden station (0.0209 μg/m 3 

# ) is about 35-70 times

higher than the range of arsenic MDL values (0.0003 – 0.0006 μg/m 3 

# ) at the Organ Pipe

station, as described in the RI Report.



# Arsenic Concentrations at Winkelman Station. Of the 54 samples collected in Winkelman

during the reporting period and analyzed for metals, 43 (80%) exceeded the arsenic ambient

air PRG of 0.00045 μg/m 3 

# . As shown on Table 2, the five most elevated arsenic

concentrations were found on January 12, 2008; June 24, 2008; August 2, 2008; November 9,

2008; and November 30, 2008 (highest).

During most of these sample periods, the prevailing wind direction was from the northwest,

and the ASARCO smelter and concentrator facilities were generally upwind. The maximum

arsenic concentration (0.0339 μg/m 3 

# , measured on November 30, 2008) is about 77 times the

# ASARCO LLC HAYDEN PLANT SITE, ARIZONA

PHX/\\MADISON\PROJ\USEPA\335404WA298ASARCO\GSA CONTRACT\DATA EVALUATION REPORT\FINAL REPORT\AIR DATA EVALUATION REPORT.DOC 4 

# PRG, and about 6.7 times lower than the maximum value recorded in Hayden over this

period. Also, the elevated arsenic concentration days in Hayden and Winkelman did not

coincide.

The average arsenic concentration at the Winkelman station (0.008 μg/m 3 

# ) is about 13-26

times higher than the range of MDL values (0.0003 – 0.0006 μg/m 3 

# ) at the Organ Pipe

station, as described in the RI Report .



# Lead Concentrations in Hayden and Winkelman. USEPA made revisions to the primary and

secondary National Ambient Air Quality Standards (NAAQS) for lead (Pb) on October 15,

2008. With regard to the primary standard, USEPA has revised the level to 0.15 μ g/m3. The

revised standard is 1/10th of the previous standard. USEPA retained the current indicator

of lead in total suspended particles (Pb-TSP). USEPA revised the averaging time to a rolling

3-month period with a maximum (not-to be- exceeded) form. USEPA has revised the

secondary standard to be identical in all respects to the revised primary standard. Even

though a complete three month data set has not been collected for lead since promulgation

of new standard, the collected data was compared to revised NAAQS for lead.

As shown in Figure 3, the concentration pattern for lead in the Hayden and Winkelman

samples was very similar to arsenic, with the elevated concentrations occurring on the same

dates. The maximum lead concentration (0.968 μg/m 3 

# on September 30, 2008) in Hayden

(Table 1) corresponded to the same sample for which the maximum arsenic concentration

was found; this lead concentration in the PM 10 

# sample is about 6.5 times the lead NAAQS of

0.15 μg/m 3 

# (rolling 3-month average value). The average lead concentration in Hayden

(0.101 μg/m 3 

# ) is about 76 times the Organ Pipe station average background value of

0.00133 μg/m 3 

# . The three-month rolling average concentrations for lead at the Hayden

monitoring station for the months that ended in September 2008 (0.172 μg/m 3 

# ), October

2008 (0.184 μg/m 3 

# ) and November 2008 (0.152 μg/m 3 

# ) exceeded NAAQS for lead.

The maximum lead concentration (0.207 μg/m 3 

# on January 12, 2008) in Winkelman (Table 2)

corresponded to the third highest arsenic concentration sample, is about 38% higher than

the NAAQS of 0.15 μg/m 3 

# , and is about 4.7 times lower than the maximum lead value

recorded in Hayden. However, the average lead concentration in Winkelman (0.0283

μg/m 3 

# ) is about 21 time higher than the Organ Pipe station average background value of

0.00133 μg/m 3 

# . None of the three month rolling averages at the Winkelman station exceeded

the NAAQS for lead.

It is important to note that federal lead NAAQS is based on using a Total Suspended

Particulate (TSP) monitor. Use of the PM 10 

# sampler may show a lower observed value than

measured by a TSP sampler.



# Copper Concentrations in Hayden and Winkelman. As shown in Figure 4, the concentration

pattern for copper in the Hayden and Winkelman samples was very similar to arsenic and

lead, with the elevated concentrations occurring on the same dates. There is no PRG or

NAAQS for copper, and the California Acute REL is 100 μg/m 3 

# (1 hour average). The

maximum copper concentration (3.82 μg/m 3 

# on September 30, 2008) in Hayden was well

below the Acute REL. The average copper concentration in Hayden (0.502 μg/m 3 

# ) is about

353 times higher than the Organ Pipe station average background value of 0.00142 μg/m 3



# .

# ASARCO LLC HAYDEN PLANT SITE, ARIZONA

PHX/\\MADISON\PROJ\USEPA\335404WA298ASARCO\GSA CONTRACT\DATA EVALUATION REPORT\FINAL REPORT\AIR DATA EVALUATION REPORT.DOC 5 

# The maximum copper concentration (1.39 μg/m 3 

# on November 9, 2008) in Winkelman

corresponded to the highest PM 10 

# concentration dates. The maximum copper concentration

in Winkelman is about three times lower than the maximum value recorded in Hayden. The

average copper concentration at the Winkelman station (0.222 μg/m 3 

# ) is about 156 times

higher than the background average copper concentration (0.00142 μg/m 3 

# ) at the Organ

Pipe station.



# Chromium Concentrations in Hayden and Winkelman. As shown in Figure 5, the concentration

pattern for chromium in the Hayden and Winkelman samples differs from arsenic, copper

and lead, with the maximum concentrations occurring on the same dates as the maximum

PM 10 

# concentrations.

The maximum chromium concentration in Hayden (0.01 μg/m 3 

# ) is about 63 times the PRG

of 0.00016 μg/m 3 

# . The average chromium concentration (0.00049 μg/m 3 

# ) at the Organ Pipe

background station is about three times the PRG. However, the average chromium

concentration at the Hayden station (0.0013 μg/m 3 

# ) is still about 3 times the Organ Pipe

station average concentration of 0.00049 μg/m 3 

# . The highest chromium concentration in

Winkelman (0.0042 μg/m 3 

# on November 9, 2008) is about 26 times the PRG. The average

chromium concentration at the Winkelman station (0.00066 μg/m 3 

# ) is still about 1.3 times

the Organ Pipe station average concentration of 0.00049 μg/m 3



# .



# Arsenic to PM 10 

# Concentration Ratio. Figure 6 shows the arsenic to PM 10 

# concentration ratios

at the two stations. A relatively high arsenic to PM 10 

# ratio at the Hayden station occurred on

March 6, 2008; April 12, 2008; May 16, 2008; August 5, 2008; and September 30, 2008. During

the days of high arsenic to PM 10 

# ratio coupled with high arsenic concentrations was

measured predominantly when wind direction was from the smelter facility toward the

Hayden station. No wind data was available for April 12, 2008.

The higher arsenic to PM 10 

# ratios at the Winkelman station occurred on the same days when

elevated arsenic concentrations were found at the Winkelman station (January 12, 2008;

August 8, 2008; and November 30, 2008). During these three days when high arsenic to

PM 10 

# ratio was measured at the Winkelman station, the predominant wind direction was

from the smelter facility toward the Winkelman station.



# Cadmium Concentrations in Hayden and Winkelman. For Hayden samples, six cadmium

results on May 16, 2008 (0.006 μg/m 3 

# ), August 8, 2008 (0.0083 μg/m 3 

# ), August 14, 2008

(0.0033 μg/m 3 

# ), September 30, 2008 (0.0203 μg/m 3 

# ), November 21, 2008 (0.0346 μg/m 3 

# ) and

November 24, 2008 (0.0037 μg/m 3 

# ) exceeded the PRG of 0.0011 μg/m 3 

# . The highest

concentration for Hayden (the November 21, 2008 sample) is about 31 times the PRG.

Cadmium was not found in the Organ Pipe station samples, with an MDL of 0.0006 μg/m 3 

# ; however, the average cadmium concentration at the Hayden station (0.003 μg/m 3 

# ) is about 5

times the Organ Pipe station MDL value.

For the Winkelman samples, none of the cadmium results were found to be above MDL for

this monitoring period.



# Other Metals in Hayden and Winkelman

As indicated in Tables 1 and 2, two exceedances of PRGs were identified for manganese. The

manganese concentration in one Winkelman sample (November 9, 2008, 0.0524 μg/m 3 

# )

# ASARCO LLC HAYDEN PLANT SITE, ARIZONA

PHX/\\MADISON\PROJ\USEPA\335404WA298ASARCO\GSA CONTRACT\DATA EVALUATION REPORT\FINAL REPORT\AIR DATA EVALUATION REPORT.DOC 6 

# slightly exceeded the PRG of 0.051 μg/m 3 

# . The manganese exceedance corresponds with the

sample date showing the highest PM 10 

# concentration in Winkelman.

The manganese concentration in one Hayden sample (November 9, 2008, 0.1113 μg/m 3 

# ) also

exceeded the PRG of 0.051 μg/m 3 

# . Similar to Winkelman, the manganese exceedance also

corresponds with the sample date showing the highest PM 10 

# concentration in Hayden.

No other metals results display exceedances of regulatory criteria. However, as indicated on

Tables 1 and 2, many metals do not have corresponding regulatory criteria that could be

referenced in this report. Also, as described earlier in this TM, the three-sigma uncertainty

value exceeded the regulatory criteria for some metals.



# Overall Data Results Comparison with Background

As shown in Table 3, the average PM 10 

# concentrations at Hayden and Winkelman stations

were approximately 2.17 and 1.12 times higher, respectively, than average PM 10 

# concentrations at the Organ Pipe station. Arsenic and cadmium were not found above

MDLs at the Organ Pipe station. However, the average concentrations of arsenic in Hayden

and Winkelman were about 35-70 and 13-26 times the Organ Pipe station MDLs, and

exceeded the PRG levels by a factor of 46 and 17, respectively. The average concentrations of

cadmium in Hayden and Winkelman exceeded the PRG levels by a factor of 3 and 2,

respectively. The average ambient air concentrations of copper, lead, and chromium at the

Hayden station were 35, 76, and 3 times greater than average levels at the Organ Pipe

station, respectively. Finally, the average ambient air concentration of copper, lead, and

chromium at the Winkelman station were 156, 21, and 1.5 times higher, respectively, than

average levels at the Organ Pipe station.



# Conclusions

In summary, the concentrations of PM 10 

# and metals in the Hayden and Winkelman stations

exceed background levels. The PM 10 

# concentrations in the Hayden station samples are about

twice the levels in the Winkelman station samples. The concentrations of arsenic, cadmium,

copper, chromium and lead are about 0.8 to 3.6 times higher in Hayden station samples

compared to Winkelman station samples and both stations exhibit significantly higher

concentrations compared to Organ Pipe (3 to 76 times) and the EPA PRGs (2 to 46 times).

In general, the elevated PM 10 

# values were found on the days with relative higher wind

speeds; however, the highest values were not found on the days with highest wind speed.

The highest PM 10 

# concentration at both Hayden and Winkelman monitors occurred on

November 9, 2008, when the wind directions were from the tailings impoundments and the

track hopper, CF and Conveyor 9 area toward the monitoring stations. Because the wind

was not blowing from the smelter facility (as it was on other days with elevated PM 10 

# and

metals concentrations), it is reasonable to assume that the major sources of the highest PM 10 

# concentrations at the two stations were the fugitive dust emissions from the material

handling activities and/or from the tailings impoundments and surrounding open spaces

with exposed soils. However, lower PM 10 

# concentrations were also found on other days

when wind was blowing from the material handling facility and the tailing impoundments,

but this may be attributed to lower wind speeds.

# ASARCO LLC HAYDEN PLANT SITE, ARIZONA

PHX/\\MADISON\PROJ\USEPA\335404WA298ASARCO\GSA CONTRACT\DATA EVALUATION REPORT\FINAL REPORT\AIR DATA EVALUATION REPORT.DOC 7 

# The PM 10 

# concentrations observed at Hayden station were generally higher than at the

Winkelman station, indicating that the top contributing sources are located closer to the

Hayden station. However, an accurate determination of the major contributors to the PM 10 

# concentrations is difficult without using additional analytical tools or specific source-area

sampling instruments.

The elevated PM 10 

# emissions on November 9, 2008 did not coincide with elevated arsenic,

lead, or cadmium concentrations monitored at the Hayden and Winkelman stations,

indicating that the fugitive dust emissions from areas to the west and southwest of the

monitoring stations were unlikely to be the top contributor for arsenic and lead.

The arsenic and lead data generally show the same trend of concentration changes, and their

concentrations were elevated on the same days when the smelter facilities were upwind of

the monitors. In addition, arsenic to PM 10 

# ratios were much higher on the days with

elevated arsenic concentrations. The PM 10 

# emissions from the smelter facility would likely

contain higher arsenic content compared to the fugitive dust emissions from the material

handling or tailings impoundment (wind erosion) areas. The higher arsenic to PM 10 

# ratio

indicates that the major sources for elevated arsenic and lead concentrations are likely the

process generated emissions from the smelter facilities.

The elevated copper concentrations generally occurred both on the days with elevated

arsenic and lead concentrations. These results indicate that copper detected at the Hayden

and Winkelman stations may be mostly attributed to the process generated emissions from

the smelter facility.

Highest chromium concentrations occurred on the days with highest PM 10 

# concentrations at

both monitors. However not all elevated chromium concentrations occurred on the days

with elevated PM 10 

# . The chromium concentrations were not elevated on the days with

elevated arsenic and lead concentrations. Therefore, an accurate determination of the major

contributors to the chromium concentrations is difficult without using additional analytical

tools or specific source-area sampling instruments.

While overall there is consistency, a couple of significant differences during this period

(November 13, 2007 through December 9, 2008) of monitoring as compared to the RI Report

monitoring (October 2006 through October 2007) are as follows:

• One measured PM 10 

# concentration above the 24-hour average National Ambient Air

Quality Standard on November 9, 2008 at Hayden Monitoring Station. This elevated

PM 10 

# concentration was measured while the wind was blowing from west (tailings piles)

greater than 12 miles per hour speed towards the monitor. There were no PM 10 

# concentrations above the 24-hour average National Ambient Air Quality Standard

during the RI Report monitoring period.

• Three measured lead concentrations above the revised EPA National Ambient Air

Quality Standard for the rolling 3-month periods ending in September, October and

November 2008 (note that data from the RI Report monitoring period were not

compared against the new NAAQS value for lead).

# ASARCO LLC HAYDEN PLANT SITE, ARIZONA

PHX/\\MADISON\PROJ\USEPA\335404WA298ASARCO\GSA CONTRACT\DATA EVALUATION REPORT\FINAL REPORT\AIR DATA EVALUATION REPORT.DOC 8 

# Figures

# ASARCO, LLC Hayden Plant Site

Hayden, Arizona FIGURE 1

PM 10 

# CONCENTRATIONS AND WIND SPEED

FOR HAYDEN AND WINKELMAN MONITORS Notes:

1 

# PM 10 

# = particulate matter with a diameter less than

or equal to 10 microns in size

2 

# μg/m 3 

# = micrograms per cubic meter

3 

# mile/hr = miles per hour

4 

# Wind speeds for Hayden and Winkelman stations

are very similar, to simplify the figure, only

wind speeds at Hayden station are shown.

5 

# Revised December 2008 

# The data on this figure are derived from tables 1 and 2.

\\MADISON\GROUPS\EMS\GIS_LIBRARY\ASARCO\MAPFILES\04_DATAEVALUATIONREPORT\FIG1_GRAPH_PM10CONC&WINDSPEED_DEC07-08.MXD TJW 12/30/2008 14:02:59 

# 0 20 40 60 80 100 120 140 160 18011/13/0701/12/0803/06/0803/30/0804/15/0805/13/0805/31/0806/15/0806/30/0807/15/0807/30/0808/14/0809/01/0809/24/0810/16/0810/31/0811/15/0811/30/08



# DatePM10Concentration (μg/m3)



# 0 5 10 15 20 25 30Wind Speed (mile/hr)



# PM10 Hayden PM10 Winkelman Wind Speed 10 10

# ASARCO, LLC Hayden Plant Site

Hayden, Arizona FIGURE 2

ARSENIC CONCENTRATIONS IN AIR AT

HAYDEN AND WINKELMAN STATIONS Notes:

1 

# As = Arsenic

2 

# μg/m 3 

# = micrograms per cubic meter

3 

# Revised December 2008



# The data on this figure are derived from tables 1 and 2.

\\MADISON\GROUPS\EMS\GIS_LIBRARY\ASARCO\MAPFILES\04_DATAEVALUATIONREPORT\FIG2_GRAPH_AIR_ARSENICCONC_DEC07-08.MXD TJW 12/30/2008 14:02:25 

# 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.1811/13/0701/12/0803/06/0803/30/0804/15/0805/13/0805/31/0806/15/0806/30/0807/15/0807/30/0808/14/0809/01/0809/24/0810/16/0810/31/0811/15/0811/30/08



# DateAs Concentration (μg/m3)



# As Hayden As Winkelman

# ASARCO, LLC Hayden Plant Site

Hayden, Arizona FIGURE 3

LEAD CONCENTRATIONS IN AIR AT

HAYDEN AND WINKELMAN STATIONS Notes:

1 

# Pb = Lead

2 

# μg/m 3 

# = micrograms per cubic meter

3 

# Revised December 2008



# The data on this figure are derived from tables 1 and 2.

\\MADISON\GROUPS\EMS\GIS_LIBRARY\ASARCO\MAPFILES\04_DATAEVALUATIONREPORT\FIG3_GRAPH_AIR_LEADCONC_DEC07-08.MXD TJW 12/30/2008 14:02:00 

# 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.011/13/0701/12/0803/06/0803/30/0804/15/0805/13/0805/31/0806/15/0806/30/0807/15/0807/30/0808/14/0809/01/0809/24/0810/16/0810/31/0811/15/0811/30/08



# DatePb Concentration (μg/m3)



# Pb Hayden Pb Winkelman

# ASARCO, LLC Hayden Plant Site

Hayden, Arizona FIGURE 4

COPPER CONCENTRATIONS IN AIR AT

HAYDEN AND WINKELMAN STATIONS Notes:

1 

# Cu = Copper

2 

# μg/m 3 

# = micrograms per cubic meter

3 

# Revised December 2008



# The data on this figure are derived from tables 1 and 2.

\\MADISON\GROUPS\EMS\GIS_LIBRARY\ASARCO\MAPFILES\04_DATAEVALUATIONREPORT\FIG4_GRAPH_AIR_COPPERCONC_DEC07-08.MXD TJW 12/30/2008 14:02:43 

# 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.011/13/0701/12/0803/06/0803/30/0804/15/0805/13/0805/31/0806/15/0806/30/0807/15/0807/30/0808/14/0809/01/0809/24/0810/16/0810/31/0811/15/0811/30/08



# DateCu Concentration (μg/m3)



# Cu Hayden Cu Winkelman

# ASARCO, LLC Hayden Plant Site

Hayden, Arizona FIGURE 5

CHROMIUM CONCENTRATIONS IN AIR AT

HAYDEN AND WINKELMAN STATIONS Notes:

1 

# Cr = Chromium

2 

# μg/m 3 

# = micrograms per cubic meter

3 

# Revised December 2008



# The data on this figure are derived from tables 1 and 2.

\\MADISON\GROUPS\EMS\GIS_LIBRARY\ASARCO\MAPFILES\04_DATAEVALUATIONREPORT\FIG5_GRAPH_AIR_CHROMIUMCONC_DEC07-08.MXD TJW 12/30/2008 14:02:13 

# 0.000 0.002 0.004 0.006 0.008 0.010 0.01211/13/0701/12/0803/06/0803/30/0804/15/0805/13/0805/31/0806/15/0806/30/0807/15/0807/30/0808/14/0809/01/0809/24/0810/16/0810/31/0811/15/0811/30/08



# DateCr Concentration (μg/m3)



# Cr Hayden Cr Winkelman

# ASARCO, LLC Hayden Plant Site

Hayden, Arizona FIGURE 6

ARSENIC TO PM 10 

# RATIOS IN AIR AT

HAYDEN AND WINKELMAN STATIONS Notes:

1 

# As = Arsenic

2 

# P 10 

# = particulate matter with a diameter less than

or equal to 10 microns in size

3 

# Revised December 2008



# The data on this figure are derived from tables 1 and 2.

\\MADISON\GROUPS\EMS\GIS_LIBRARY\ASARCO\MAPFILES\04_DATAEVALUATIONREPORT\FIG6_GRAPH_AIR_ARSENICTOPM10RATIO_DEC07-08.MXD TJW 12/30/2008 14:01:42 

# 0.0000 0.0005 0.0010 0.0015 0.0020 0.0025 0.0030 0.0035 0.004011/13/0701/12/0803/06/0803/30/0804/15/0805/13/0805/31/0806/15/0806/30/0807/15/0807/30/0808/14/0809/01/0809/24/0810/16/0810/31/0811/15/0811/30/08



# DateAs/PM10



# As/PM10 Hayden As/PM10 Winkelman 10 10

# ASARCO LLC HAYDEN PLANT SITE, ARIZONA

PHX/\\MADISON\PROJ\USEPA\335404WA298ASARCO\GSA CONTRACT\DATA EVALUATION REPORT\FINAL REPORT\AIR DATA EVALUATION REPORT.DOC 9 

# TablesTABLE 1Air Filter Sampling Laboratory Values for Inorganic ParametersHayden Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12QualPM10μg/m3----1507/508--1507--53.97NA55.97NA 28.99 NA R NA 23.60 NA 25.89 NAAluminumμg/m3------5.1----2.0490 4.03002.1430 4.04100.7519 2.6620RR0.7604 3.30000.7072 2.782Antimonyμg/m313,0001.46--------0.0081 0.0060 * 0.0093 0.0062 * 0.0087 0.0098 *RR0.009 0.0053 * 0.0093 0*Arsenicμg/m32,5000.000441 -- 0.00045 --0.190.00210.0034 *0.00690.0114 *0.02000.0708 R R0.01360.05880.01690.0663Bariumμg/m3------0.52----0.0195 0.03840.0222 0.0263 * 0.0105 0.0165 *RR0.0111 0.0231 * 0.0137 0.0541Bismuthμg/m3------------NA NA0.0125 0.02350.0241 0.0852RR0.0374 0.16240.0277 0.1091Bromineμg/m3------------0.0020 0.00390.0011 0.00200.0009 0.0025 *RR0.0017 0.00740.0012 0.0028 *Cadmiumμg/m32500.00105-- 0.0011 ----0.00570.0000 *0.00750.0097 *0.00690.0120 * R R0.00720.0000 *0.00720 *Calciumμg/m3------------1.2470 2.45301.5930 3.00400.6822 2.4150RR0.7543 3.27400.4661 1.834Chlorineμg/m3------------0.0124 0.02440.0087 0.0000 * 0.0069 0.0000 *RR0.0087 0.0035 * 0.0129 0.0443 *Chromiumμg/m31000.000158 -- 0.00016 ----0.00170.00340.00270.00510.00120.0000 * R R0.00150.00650.00120.0009 *Cobaltμg/m310,000 0.000686 -- 0.00069 ----0.02160.0000 *0.03510.0000 *0.01530.0000 * R R0.01860.0000 *0.01320 *Copperμg/m3----------100 0.1787 0.35160.4490 0.84650.4560 1.6140RR0.4934 2.14100.5452 2.145Galliumμg/m3------------0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 *RR0.0015 0.0000 * 0.0021 0*Germaniumμg/m3------------0.0012 0.0000 * 0.0009 0.0000 * 0.0009 0.0000 *RR0.0009 0.0000 * 0.0009 0*Indiumμg/m3------------0.0063 0.0000 * 0.0078 0.0000 * 0.0072 0.0153 *RR0.0078 0.0086 * 0.0075 0*Ironμg/m3------------1.1700 2.30101.9110 3.60200.8240 2.9170RR1.0040 4.35700.7006 2.756Lanthanumμg/m3------------0.0267 0.0000 * 0.0249 0.0013 * 0.0117 0.0000 *RR0.0123 0.0033 * 0.0075 0*Leadμg/m3----1.59 10--1.59 10--0.0049 0.00960.0420 0.07920.0538 0.1905RR0.0944 0.40950.1487 0.5852Magnesiumμg/m3------------0.2029 0.39920.3624 0.68330.1098 0.3887RR0.1516 0.65780.0318 0.0811 *Manganeseμg/m32,5000.0521-- 0.051----0.0183 0.03600.0356 0.06710.0144 0.0508RR0.0134 0.05820.0071 0.0278Mercuryμg/m31,0000.313--0.31--1.8 0.0024 0.0000 * 0.0018 0.0000 * 0.0018 0.0000 *RR0.0018 0.0000 * 0.0018 0*Molybdenumμg/m3------------0.0052 0.01020.0106 0.02010.0073 0.0260RR0.0043 0.01880.0083 0.0326Nickelμg/m35,0000.0079-- 0.008--60.0024 0.0014 * 0.0021 0.00390.0015 0.0047 *RR0.0018 0.0039 * 0.0018 0.0015 *Palladiumμg/m3------------0.0054 0.0000 * 0.0066 0.0028 * 0.006 0.0000 *RR0.0066 0.0061 * 0.0066 0.008 *Phosphorusμg/m3------------0.0063 0.0000 * 0.0075 0.0000 * 0.0048 0.0000 *RR0.0054 0.0000 * 0.0057 0*Potassiumμg/m3------------1.0520 2.06901.1940 2.25000.3390 1.2000RR0.3743 1.62400.5316 2.091Rubidiumμg/m3------------0.0046 0.00910.0053 0.01000.0023 0.0080RR0.0020 0.00860.0024 0.0094Seleniumμg/m350018.3--------0.0009 0.0011 * 0.0015 0.00280.0154 0.0547RR0.0126 0.05460.0061 0.0239Siliconμg/m3------------4.1660 8.19505.8520 11.03002.1540 7.6230RR2.0280 8.80102.5870 10.18Silverμg/m3------------0.0057 0.0000 * 0.0069 0.0012 * 0.0063 0.0005 *RR0.0069 0.0018 * 0.0069 0.0074 *Sodiumμg/m3------------0.1905 0.1638 * 0.2691 0.2497 * 0.1806 0.3752 *RR0.2080 0.90280.2022 0.6782 *Strontiumμg/m3------------0.0072 0.01410.0086 0.01620.0030 0.0107RR0.0047 0.02020.0027 0.0106Sulfurμg/m3------------0.7467 1.46900.9652 1.82000.6691 2.3680RR0.8489 3.68401.3640 5.365Tinμg/m3------------0.0078 0.0059 * 0.0087 0.0020 * 0.0078 0.0000 *RR0.0084 0.0053 * 0.0084 0.0076 *Titaniumμg/m3------31----0.1313 0.25820.2292 0.43200.0971 0.3437RR0.1034 0.44890.0445 0.1752Vanadiumμg/m3------------0.0051 0.0000 * 0.0078 0.0026 * 0.0036 0.0003 *RR0.0036 0.0006 * 0.0021 0*Yttriumμg/m3------------0.0019 0.00380.0013 0.00240.0012 0.0000 *RR0.0015 0.0000 * 0.0018 0*Zincμg/m3------------0.0114 0.02250.0319 0.06010.0345 0.1220RR0.0611 0.26500.0454 0.1786Zirconiumμg/m3------------0.0042 0.00820.0050 0.00950.0016 0.0057RR0.0015 0.0057 * 0.0017 0.0069Table Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations, Title 18 Chapter 2 Article 17, December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards, Title 18 Chapter 2 Article 2, December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals, Ambient Air, October 2004mph4EPA National Ambient Air QualityStandards, http://www.epa.gov/air/criteria.html, February20085California Acute Reference Exposure Levels, March 19996With the exception of arsenic, the averaging time for all listed analytes is one hour. The averaging time for arsenic is four hours7The averaging time for the criteria is 24 hours.8The averaging time for the criteria is the annual arithmetic mean.9The averaging time for the criteria is the quarterly average.10Only the PM10 fraction is being measured not the total suspended particulates.11Samples are anticipated to be rejected by EPA during validation.12Percent of Total Mass13Precipitation measurements are recorded manually by a Hayden-Winkelman High School employee; reliability cannot be verifiedCalm: < 114Bold values with bold outline indicate the result exceeds one or more of the comparison criteriaWind direction15Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteriatoward centerCalm: 2.08%Calm: 4.17%Calm: 0.00%Calm: 0.00%Calm: 0.00%Calm: 20.83%16* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.17-- = Not established18°C = Degrees Celsius19% = Percent20J = Estimated value21mph = milesper hour22NA = Not Applicable or Not Analyzed23NPR = Noprecipitation recorded.24NV = Not valid due to sample volume issues with the instrument.25μg/m3= Microgramsper cubic meter26PM10= particulate matter with a diameter less than or equal to 10 microns in size27R = Rejected28This table should be consideredpreliminaryand will be revised based on incomingdata, final data validation and QA/QCNANANA NA NA NA24.1 25.17.8 7.1 10.3 NA10.5 9.420.9 18.7 11.1 NA85 148151 136 122 NA6.21 2.053.85 3.54 4.78 NA12/13/20071/12/200811/13/2007 11/19/2007 11/25/2007 12/7/2007Date:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)1EPARegion IXPreliminaryRemediationGoal3Avg Wind Speed mph):Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):Avg Ambient Temperature (oC):ArizonaAmbientAir QualityStandards2Precipitation (inches)7:CaliforniaAcuteReferenceExposureLevels5 6EPANationalAmbientAir QualityStandards4TABLE 1Air Filter Sampling Laboratory Values for Inorganic ParametersHayden Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsPM10μg/m3----1507/508--1507--Aluminumμg/m3------5.1----Antimonyμg/m313,0001.46--------Arsenicμg/m32,5000.000441 -- 0.00045 --0.19Bariumμg/m3------0.52----Bismuthμg/m3------------Bromineμg/m3------------Cadmiumμg/m32500.00105-- 0.0011 ----Calciumμg/m3------------Chlorineμg/m3------------Chromiumμg/m31000.000158 -- 0.00016 ----Cobaltμg/m310,000 0.000686 -- 0.00069 ----Copperμg/m3----------100Galliumμg/m3------------Germaniumμg/m3------------Indiumμg/m3------------Ironμg/m3------------Lanthanumμg/m3------------Leadμg/m3----1.59 10--1.59 10--Magnesiumμg/m3------------Manganeseμg/m32,5000.0521-- 0.051----Mercuryμg/m31,0000.313--0.31--1.8Molybdenumμg/m3------------Nickelμg/m35,0000.0079-- 0.008--6Palladiumμg/m3------------Phosphorusμg/m3------------Potassiumμg/m3------------Rubidiumμg/m3------------Seleniumμg/m350018.3--------Siliconμg/m3------------Silverμg/m3------------Sodiumμg/m3------------Strontiumμg/m3------------Sulfurμg/m3------------Tinμg/m3------------Titaniumμg/m3------31----Vanadiumμg/m3------------Yttriumμg/m3------------Zincμg/m3------------Zirconiumμg/m3------------Table Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations, Title 18 Chapter 2 Article 17, December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards, Title 18 Chapter 2 Article 2, December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals, Ambient Air, October 2004mph4EPA National Ambient Air QualityStandards, http://www.epa.gov/air/criteria.html, February20085California Acute Reference Exposure Levels, March 19996With the exception of arsenic, the averaging time for all listed analytes is one hour. The averaging time for arsenic is four hours7The averaging time for the criteria is 24 hours.8The averaging time for the criteria is the annual arithmetic mean.9The averaging time for the criteria is the quarterly average.10Only the PM10 fraction is being measured not the total suspended particulates.11Samples are anticipated to be rejected by EPA during validation.12Percent of Total Mass13Precipitation measurements are recorded manually by a Hayden-Winkelman High School employee; reliability cannot be verifiedCalm: < 114Bold values with bold outline indicate the result exceeds one or more of the comparison criteriaWind direction15Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteriatoward center16* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.17-- = Not established18°C = Degrees Celsius19% = Percent20J = Estimated value21mph = milesper hour22NA = Not Applicable or Not Analyzed23NPR = Noprecipitation recorded.24NV = Not valid due to sample volume issues with the instrument.25μg/m3= Microgramsper cubic meter26PM10= particulate matter with a diameter less than or equal to 10 microns in size27R = Rejected28This table should be consideredpreliminaryand will be revised based on incomingdata, final data validation and QA/QCDate:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)1EPARegion IXPreliminaryRemediationGoal3Avg Wind Speed mph):Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):Avg Ambient Temperature (oC):ArizonaAmbientAir QualityStandards2Precipitation (inches)7:CaliforniaAcuteReferenceExposureLevels5 6EPANationalAmbientAir QualityStandards4ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual18.26 NA11.11 NA8.32 NA19.6 NA13.64 NA19.29 NA0.6403 3.533 0.2615 2.395 0.1888 2.3480 0.4414 2.3590 0.2371 1.7900 0.6544 3.47700.009 0.0031 * 0.0084 0 * 0.0024 0.0000 * 0.0033 0.0078 * 0.0036 0.0178 * 0.0060 0.0188 *0.01530.08440.00630.05740.00330.04160.02210.11830.02120.15990.00790.04180.0063 0* 0.0048 0.003 * 0.0045 0.0059 * 0.0066 0.0000 * 0.0051 0.0000 * 0.0114 0.0000 *0.0153 0.0842NA NANA NA0.0157 0.08410.0200 0.1510NA NA0.0009 0.0018 * 0.0019 0.01730.0010 0.01290.0022 0.01180.0012 0.0021 * 0.0038 0.02000.00720.0094 *0.00660.0358 * 0.0018 0.0000 * 0.0024 0.0053 * 0.0024 0.0000 * 0.0042 0.0000 *0.4329 2.3890.2391 2.1910.2096 2.60600.3920 2.09500.3372 2.54500.4078 2.16600.0072 0.0255 * 0.006 0.0147 * 0.2038 2.53400.0251 0.13410.0336 0.25370.0194 0.10300.00230.01250.00120* 0.0009 0.0000 * 0.0009 0.0000 * 0.0009 0.0000 *0.00210.0077 *0.0120 *0.00570* 0.0039 0.0000 * 0.0090 0.0000 * 0.0057 0.0000 * 0.0123 0.0000 *0.3645 2.0110.0846 0.7750.0311 0.38700.2182 1.16600.5509 4.15800.2704 1.43700.0015 0* 0.0012 0* 0.0012 0.0000 * 0.0018 0.0000 * 0.0018 0.0000 * 0.0027 0.0000 *0.0009 0* 0.0009 0* 0.0009 0.0029 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0024 0.0041 *0.0075 0* 0.0072 0* 0.0021 0.0035 * 0.0024 0.0000 * 0.0027 0.0092 * 0.0048 0.0012 *0.6352 3.5040.2685 2.460.1528 1.90000.4591 2.45400.2694 2.03300.5798 3.08000.0069 0* 0.0051 0.0142 * 0.0069 0.0000 * 0.0105 0.0116 * 0.0078 0.0032 * 0.0186 0.0000 *0.0613 0.33850.0291 0.26650.0081 0.10130.0764 0.40820.0697 0.52630.0182 0.09650.051 0.2509 * 0.0405 0.3554 * 0.0613 0.76170.0653 0.34910.0591 0.44630.1138 0.60440.0059 0.03250.0038 0.03490.0025 0.03160.0052 0.02770.0027 0.02030.0064 0.03410.0018 0* 0.0018 0* 0.0024 0.0064 * 0.0024 0.0000 * 0.0024 0.0000 * 0.0051 0.0000 *0.0062 0.03430.0021 0.0091 * 0.0027 0.0000 * 0.0055 0.02920.0052 0.03940.0066 0.0065 *0.0018 0* 0.0015 0.0108 * 0.0021 0.0023 * 0.0024 0.0000 * 0.0024 0.0000 * 0.0051 0.0171 *0.0063 0.0013 * 0.006 0* 0.0018 0.0000 * 0.0024 0.0000 * 0.0024 0.0000 * 0.0039 0.0000 *0.0042 0* 0.0039 0* 0.0033 0.0000 * 0.0042 0.0000 * 0.0039 0.0000 * 0.0075 0.0000 *0.3384 1.8670.1419 1.30.0928 1.15300.2069 1.10600.1166 0.87980.2961 1.57300.0014 0.00750.0006 0.0026 * 0.0009 0.0000 * 0.0017 0.00910.0016 0.01240.0024 0.0029 *0.0051 0.02830.0046 0.04180.0017 0.02110.0040 0.02160.0147 0.11090.0021 0.0000 *1.6950 9.3520.7218 6.6120.4939 6.14201.1840 6.33000.6686 5.04601.7050 9.05800.0066 0* 0.0063 0.0121 * 0.0018 0.0082 * 0.0024 0.0023 * 0.0052 0.03940.0042 0.0188 *0.1689 0.6741 * 0.138 0.9096 * 0.2191 2.72400.1428 0.7540 * 0.1248 0.7160 * 0.2214 0.5568 *0.0023 0.01250.0020 0.01810.0012 0.0070 * 0.0022 0.01180.0032 0.02420.0038 0.02000.4953 2.7330.5010 4.5890.1709 2.12500.6884 3.67900.3192 2.40900.3418 1.81600.0081 0.0153 * 0.0078 0* 0.0027 0.0000 * 0.0036 0.0070 * 0.0036 0.0103 * 0.0066 0.0082 *0.0396 0.21870.0267 0.24450.0149 0.18560.0315 0.16840.0179 0.13500.0434 0.23070.0018 0* 0.0012 0* 0.0009 0.0000 * 0.0018 0.0000 * 0.0012 0.0000 * 0.0027 0.0000 *0.0012 0* 0.0012 0* 0.0015 0.0000 * 0.0021 0.0000 * 0.0018 0.0000 * 0.0036 0.0012 *0.0422 0.2330.0209 0.19150.0086 0.10710.0683 0.36520.0414 0.31230.0195 0.10360.0015 0.0016 * 0.0012 0.0004 * 0.0021 0.0094 * 0.0024 0.0000 * 0.0021 0.0036 * 0.0048 0.0171 *Calm: 0.00%Calm: 31.25%Calm: 0.00%Calm: 22.92%Calm: 0.00%Calm: 4.76%7.9NA03/12/082.7312610.39.5NA03/06/085.4717.0NA11.5NA02/23/0802/29/0831112.413.914117.44.232.98NANA10.631.76.38.81042593.732.671/18/20082/17/2008272TABLE 1Air Filter Sampling Laboratory Values for Inorganic ParametersHayden Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsPM10μg/m3----1507/508--1507--Aluminumμg/m3------5.1----Antimonyμg/m313,0001.46--------Arsenicμg/m32,5000.000441 -- 0.00045 --0.19Bariumμg/m3------0.52----Bismuthμg/m3------------Bromineμg/m3------------Cadmiumμg/m32500.00105-- 0.0011 ----Calciumμg/m3------------Chlorineμg/m3------------Chromiumμg/m31000.000158 -- 0.00016 ----Cobaltμg/m310,000 0.000686 -- 0.00069 ----Copperμg/m3----------100Galliumμg/m3------------Germaniumμg/m3------------Indiumμg/m3------------Ironμg/m3------------Lanthanumμg/m3------------Leadμg/m3----1.59 10--1.59 10--Magnesiumμg/m3------------Manganeseμg/m32,5000.0521-- 0.051----Mercuryμg/m31,0000.313--0.31--1.8Molybdenumμg/m3------------Nickelμg/m35,0000.0079-- 0.008--6Palladiumμg/m3------------Phosphorusμg/m3------------Potassiumμg/m3------------Rubidiumμg/m3------------Seleniumμg/m350018.3--------Siliconμg/m3------------Silverμg/m3------------Sodiumμg/m3------------Strontiumμg/m3------------Sulfurμg/m3------------Tinμg/m3------------Titaniumμg/m3------31----Vanadiumμg/m3------------Yttriumμg/m3------------Zincμg/m3------------Zirconiumμg/m3------------Table Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations, Title 18 Chapter 2 Article 17, December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards, Title 18 Chapter 2 Article 2, December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals, Ambient Air, October 2004mph4EPA National Ambient Air QualityStandards, http://www.epa.gov/air/criteria.html, February20085California Acute Reference Exposure Levels, March 19996With the exception of arsenic, the averaging time for all listed analytes is one hour. The averaging time for arsenic is four hours7The averaging time for the criteria is 24 hours.8The averaging time for the criteria is the annual arithmetic mean.9The averaging time for the criteria is the quarterly average.10Only the PM10 fraction is being measured not the total suspended particulates.11Samples are anticipated to be rejected by EPA during validation.12Percent of Total Mass13Precipitation measurements are recorded manually by a Hayden-Winkelman High School employee; reliability cannot be verifiedCalm: < 114Bold values with bold outline indicate the result exceeds one or more of the comparison criteriaWind direction15Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteriatoward center16* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.17-- = Not established18°C = Degrees Celsius19% = Percent20J = Estimated value21mph = milesper hour22NA = Not Applicable or Not Analyzed23NPR = Noprecipitation recorded.24NV = Not valid due to sample volume issues with the instrument.25μg/m3= Microgramsper cubic meter26PM10= particulate matter with a diameter less than or equal to 10 microns in size27R = Rejected28This table should be consideredpreliminaryand will be revised based on incomingdata, final data validation and QA/QCDate:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)1EPARegion IXPreliminaryRemediationGoal3Avg Wind Speed mph):Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):Avg Ambient Temperature (oC):ArizonaAmbientAir QualityStandards2Precipitation (inches)7:CaliforniaAcuteReferenceExposureLevels5 6EPANationalAmbientAir QualityStandards4ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12QualNV NV29.53 NA28.67 NA1.16 NAR NA29.05 NANV NV1.1140 3.95100.7213 2.65900.0105 0.9475 *RR0.8409 3.0760NV NV0.0027 0.0022 * 0.0027 0.0045 * 0.0024 0.0000 *RR0.0027 0.0014 *NV NV0.00390.01390.00270.0078 * 0.0009 0.0304 *RR0.02030.0742NV NV0.0102 0.0159 * 0.0078 0.0036 * 0.0033 0.2825 *RR0.0087 0.0238 *NV NVNA NANA NANA NARRNA NANV NV0.0031 0.01080.0056 0.02080.0006 0.0043 *RR0.0027 0.0100NV NV0.0021 0.0012 * 0.0018 0.0000 * 0.0018 0.0000 *RR0.0018 0.0045 *NV NV1.1700 4.14900.8178 3.01500.0129 1.1860RR0.6126 2.2410NV NV0.0309 0.10970.0790 0.29130.0036 0.1782 *RR0.3658 1.3380NV NV0.00120.0022 *0.00170.00640.0009 0.0000 *RR0.00090.0019 *NV NV0.0156 0.0000 * 0.0126 0.0000 * 0.0024 0.0000 *RR0.0093 0.0000 *NV NV0.2691 0.95410.2024 0.74600.0045 0.4129RR0.2953 1.0800NV NV0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0478 *RR0.0015 0.0000 *NV NV0.0012 0.0000 * 0.0009 0.0000 * 0.0009 0.0000 *RR0.0012 0.0000 *NV NV0.0021 0.0000 * 0.0021 0.0000 * 0.0018 0.0261 *RR0.0021 0.0000 *NV NV0.8418 2.98400.6822 2.51500.0087 0.7997RR0.7091 2.5940NV NV0.0171 0.0057 * 0.0132 0.0134 * 0.0030 0.1652 *RR0.0072 0.0000 *NV NV0.0152 0.05390.0125 0.04600.0024 0.0043 *RR0.0305 0.1116NV NV0.3135 1.11100.2193 0.80840.0117 0.4042 *RR0.1943 0.7109NV NV0.0134 0.04740.0103 0.03800.0012 0.0000 *RR0.0091 0.0332NV NV0.0024 0.0000 * 0.0021 0.0000 * 0.0021 0.0391 *RR0.0024 0.0041 *NV NV0.0049 0.01740.0032 0.01200.0027 0.0000 *RR0.0078 0.0286NV NV0.0024 0.0007 * 0.0021 0.0000 * 0.0021 0.0087 *RR0.0024 0.0010 *NV NV0.0018 0.0000 * 0.0018 0.0000 * 0.0018 0.0000 *RR0.0021 0.0000 *NV NV0.0057 0.0000 * 0.0048 0.0000 * 0.0024 0.0000 *RR0.0045 0.0000 *NV NV0.4226 1.49800.2662 0.98120.0034 0.3173RR0.3865 1.4140NV NV0.0020 0.00720.0012 0.0028 * 0.0009 0.0217 *RR0.0015 0.0053NV NV0.0009 0.0008 * 0.0009 0.0000 * 0.0009 0.0043 *RR0.0081 0.0296NV NV3.4400 12.19001.9060 7.02800.0186 1.7170RR2.17 7.9390NV NV0.0021 0.0025 * 0.0018 0.0000 * 0.0018 0.0000 *RR0.0021 0.0000 *NV NV0.1641 0.3443 * 0.1500 0.4034 * 0.0300 1.5780 *RR0.4395 1.6080NV NV0.0050 0.01770.0041 0.01530.0012 0.0391 *RR0.0043 0.0157NV NV0.6884 2.44000.5090 1.87600.0018 0.0956 *RR0.7279 2.6630NV NV0.0027 0.0000 * 0.0030 0.0062 * 0.0027 0.0000 *RR0.0024 0.0000 *NV NV0.0787 0.27890.0547 0.20150.0009 0.0000 *RR0.0636 0.2327NV NV0.0030 0.0015 * 0.0024 0.0010 * 0.0006 0.0000 *RR0.0024 0.0031 *NV NV0.0015 0.0000 * 0.0015 0.0000 * 0.0015 0.0304 *RR0.0027 0.0000 *NV NV0.0147 0.05220.0144 0.05290.0015 0.0000 *RR0.0232 0.0849NV NV0.0021 0.0072 * 0.0018 0.0012 * 0.0018 0.0000 *RR0.0021 0.0041 *Calm: 8.33%Calm: 25.00%Calm: 31.25%Calm: 4.17%Calm: 31.25%Calm: 25.00%7.0NA03/26/083.1103/30/085.8424220.1NA7.6NA6.9NA03/20/0825619.2NV03/14/08NVNVNV20316.423018.17.13.9825220.004/05/0804/02/08113.736.8NANA4.78TABLE 1Air Filter Sampling Laboratory Values for Inorganic ParametersHayden Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12QualPM10μg/m3----1507/508--1507--29.12 NA33.35 NA44.78 NA26.71 NA24.15 NAR NAAluminumμg/m3------5.1----0.8357 3.04401.037 3.35501.649 3.89900.71 2.82100.9501 4.2000RRAntimonyμg/m313,0001.46--------0.0055 0.01990.0027 0.0020 * 0.003 0.0050 * 0.0027 0.0054 * 0.0027 0.0046 *RRArsenicμg/m32,5000.000441 -- 0.00045 --0.190.09700.35320.01200.03880.02270.05380.00670.02680.00500.0223 R RBariumμg/m3------0.52----0.0489 0.17820.0126 0.0201 * 0.0165 0.0257 * 0.0072 0.0245 * 0.0084 0.0343 *RRBismuthμg/m3------------0.0898 0.32720.0101 0.03260.0308 0.0728NA NANA NANA NABromineμg/m3------------0.003 0.0000 * 0.0023 0.00730.005 0.01190.0057 0.02280.0031 0.0137RRCadmiumμg/m32500.00105-- 0.0011 ----0.00520.01890.0018 0.0008 * 0.0021 0.0023 * 0.0018 0.0000 * 0.0018 0.0000 *RRCalciumμg/m3------------0.8051 2.93200.8023 2.59501.329 3.14200.6286 2.49800.6959 3.0760RRChlorineμg/m3------------0.0159 0.0099 * 0.0436 0.14120.0497 0.11760.4722 1.87600.0359 0.1586RRChromiumμg/m31000.000158 -- 0.00016 ----0.00710.02590.0009 0.0000 *0.00150.0022 *0.00090.0021 *0.00100.0046 R RCobaltμg/m310,000 0.000686 -- 0.00069 ----0.0201 0.0000 * 0.0117 0.0000 * 0.0162 0.0000 * 0.0075 0.0000 * 0.0081 0.0000 *RRCopperμg/m3----------100 2.055 7.48300.2266 0.73300.3633 0.85910.1761 0.69990.1012 0.4472RRGalliumμg/m3------------0.0048 0.0000 * 0.0015 0.0000 * 0.0021 0.0000 * 0.0015 0.0000 * 0.0012 0.0000 *RRGermaniumμg/m3------------0.0015 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0009 0.0000 *RRIndiumμg/m3------------0.0021 0.0033 * 0.0018 0.0000 * 0.0021 0.0011 * 0.0018 0.0000 * 0.0018 0.0000 *RRIronμg/m3------------1.738 6.33100.9205 2.97701.281 3.02900.5871 2.33300.6177 2.7300RRLanthanumμg/m3------------0.0096 0.0000 * 0.0108 0.0000 * 0.0138 0.0000 * 0.006 0.0000 * 0.0069 0.0000 *RRLeadμg/m3----1.59 10--1.59 10--0.4627 1.68500.059 0.19080.1272 0.30070.0299 0.11900.0097 0.0427RRMagnesiumμg/m3------------0.0477 0.0899 * 0.2325 0.75220.3601 0.85150.195 0.77470.2333 1.0310RRManganeseμg/m32,5000.0521-- 0.051----0.0125 0.04560.0147 0.04770.0244 0.05780.009 0.03570.0102 0.0450RRMercuryμg/m31,0000.313--0.31--1.8 0.0024 0.0000 * 0.0024 0.0000 * 0.0024 0.0000 * 0.0021 0.0000 * 0.0021 0.0027 *RRMolybdenumμg/m3------------0.0373 0.13580.003 0.0049 * 0.0081 0.01930.0037 0.01480.0027 0.0035 *RRNickelμg/m35,0000.0079-- 0.008--60.0027 0.0000 * 0.0024 0.0043 * 0.0024 0.0010 * 0.0021 0.0000 * 0.0021 0.0033 *RRPalladiumμg/m3------------0.0021 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 * 0.0018 0.0000 * 0.0018 0.0000 *RRPhosphorusμg/m3------------0.0054 0.0009 * 0.0048 0.0008 * 0.012 0.0073 * 0.0045 0.0028 * 0.0045 0.0000 *RRPotassiumμg/m3------------0.3486 1.26900.3535 1.14300.6262 1.48100.3218 1.27900.3729 1.6480RRRubidiumμg/m3------------0.0032 0.01150.0015 0.00490.0027 0.00630.0009 0.0037 * 0.0011 0.0050RRSeleniumμg/m350018.3--------0.0604 0.21980.0028 0.00910.0074 0.01750.0049 0.01950.0016 0.0073RRSiliconμg/m3------------2.177 7.92702.826 9.14104.233 10.01001.682 6.68302.253 9.9600RRSilverμg/m3------------0.0075 0.02740.0021 0.0003 * 0.0021 0.0011 * 0.0018 0.0000 * 0.0018 0.0000 *RRSodiumμg/m3------------0.0843 0.0000 * 0.1926 0.2584 * 0.4872 0.5309 * 0.4539 1.80400.1785 0.6774 *RRStrontiumμg/m3------------0.0041 0.01490.0064 0.02060.0095 0.02250.0044 0.01760.0047 0.0206RRSulfurμg/m3------------1.706 6.21400.6756 2.18501.465 3.46500.8979 3.56800.5702 2.5200RRTinμg/m3------------0.003 0.0093 * 0.0024 0.0011 * 0.0024 0.0000 * 0.0024 0.0006 * 0.0024 0.0000 *RRTitaniumμg/m3------31----0.0885 0.32220.1114 0.36020.1333 0.31520.0484 0.19230.0615 0.2718RRVanadiumμg/m3------------0.0033 0.0070 * 0.0042 0.0119 * 0.0051 0.0107 * 0.0021 0.0051 * 0.0024 0.0062 *RRYttriumμg/m3------------0.0042 0.0000 * 0.0027 0.0000 * 0.003 0.0000 * 0.0024 0.0000 * 0.0024 0.0000 *RRZincμg/m3------------0.2285 0.83220.0267 0.08630.0603 0.14250.0207 0.08210.011 0.0487RRZirconiumμg/m3------------0.0045 0.01630.0043 0.01390.0025 0.00590.0018 0.0045 * 0.0018 0.0035 *RRTable Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations, Title 18 Chapter 2 Article 17, December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards, Title 18 Chapter 2 Article 2, December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals, Ambient Air, October 2004mph4EPA National Ambient Air QualityStandards, http://www.epa.gov/air/criteria.html, February20085California Acute Reference Exposure Levels, March 19996With the exception of arsenic, the averaging time for all listed analytes is one hour. The averaging time for arsenic is four hours7The averaging time for the criteria is 24 hours.8The averaging time for the criteria is the annual arithmetic mean.9The averaging time for the criteria is the quarterly average.10Only the PM10 fraction is being measured not the total suspended particulates.11Samples are anticipated to be rejected by EPA during validation.12Percent of Total Mass13Precipitation measurements are recorded manually by a Hayden-Winkelman High School employee; reliability cannot be verifiedCalm: < 114Bold values with bold outline indicate the result exceeds one or more of the comparison criteriaWind direction15Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteriatoward centerCalm: 2.08%Calm: 27.08%Calm: 16.67%Calm: 20.83%16* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.17-- = Not established18°C = Degrees Celsius19% = Percent20J = Estimated value21mph = milesper hour22NA = Not Applicable or Not Analyzed23NPR = Noprecipitation recorded.24NV = Not valid due to sample volume issues with the instrument.25μg/m3= Microgramsper cubic meter26PM10= particulate matter with a diameter less than or equal to 10 microns in size27R = Rejected28This table should be consideredpreliminaryand will be revised based on incomingdata, final data validation and QA/QCCaliforniaAcuteReferenceExposureLevels5 6EPANationalAmbientAir QualityStandards4EPARegion IXPreliminaryRemediationGoal3Avg Wind Speed mph):Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):Avg Ambient Temperature (oC):ArizonaAmbientAir QualityStandards2Precipitation (inches)7:Date:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)16.3NA05/10/083.6724424.46.8NA04/24/085.0325121.26.7NA04/21/083.8526719.523623.56.6NA04/12/087.954421.46.4NA04/18/084.4113819.36.9NA04/15/085.53TABLE 1Air Filter Sampling Laboratory Values for Inorganic ParametersHayden Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsPM10μg/m3----1507/508--1507--Aluminumμg/m3------5.1----Antimonyμg/m313,0001.46--------Arsenicμg/m32,5000.000441 -- 0.00045 --0.19Bariumμg/m3------0.52----Bismuthμg/m3------------Bromineμg/m3------------Cadmiumμg/m32500.00105-- 0.0011 ----Calciumμg/m3------------Chlorineμg/m3------------Chromiumμg/m31000.000158 -- 0.00016 ----Cobaltμg/m310,000 0.000686 -- 0.00069 ----Copperμg/m3----------100Galliumμg/m3------------Germaniumμg/m3------------Indiumμg/m3------------Ironμg/m3------------Lanthanumμg/m3------------Leadμg/m3----1.59 10--1.59 10--Magnesiumμg/m3------------Manganeseμg/m32,5000.0521-- 0.051----Mercuryμg/m31,0000.313--0.31--1.8Molybdenumμg/m3------------Nickelμg/m35,0000.0079-- 0.008--6Palladiumμg/m3------------Phosphorusμg/m3------------Potassiumμg/m3------------Rubidiumμg/m3------------Seleniumμg/m350018.3--------Siliconμg/m3------------Silverμg/m3------------Sodiumμg/m3------------Strontiumμg/m3------------Sulfurμg/m3------------Tinμg/m3------------Titaniumμg/m3------31----Vanadiumμg/m3------------Yttriumμg/m3------------Zincμg/m3------------Zirconiumμg/m3------------Table Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations, Title 18 Chapter 2 Article 17, December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards, Title 18 Chapter 2 Article 2, December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals, Ambient Air, October 2004mph4EPA National Ambient Air QualityStandards, http://www.epa.gov/air/criteria.html, February20085California Acute Reference Exposure Levels, March 19996With the exception of arsenic, the averaging time for all listed analytes is one hour. The averaging time for arsenic is four hours7The averaging time for the criteria is 24 hours.8The averaging time for the criteria is the annual arithmetic mean.9The averaging time for the criteria is the quarterly average.10Only the PM10 fraction is being measured not the total suspended particulates.11Samples are anticipated to be rejected by EPA during validation.12Percent of Total Mass13Precipitation measurements are recorded manually by a Hayden-Winkelman High School employee; reliability cannot be verifiedCalm: < 114Bold values with bold outline indicate the result exceeds one or more of the comparison criteriaWind direction15Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteriatoward center16* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.17-- = Not established18°C = Degrees Celsius19% = Percent20J = Estimated value21mph = milesper hour22NA = Not Applicable or Not Analyzed23NPR = Noprecipitation recorded.24NV = Not valid due to sample volume issues with the instrument.25μg/m3= Microgramsper cubic meter26PM10= particulate matter with a diameter less than or equal to 10 microns in size27R = Rejected28This table should be consideredpreliminaryand will be revised based on incomingdata, final data validation and QA/QCCaliforniaAcuteReferenceExposureLevels5 6EPANationalAmbientAir QualityStandards4EPARegion IXPreliminaryRemediationGoal3Avg Wind Speed mph):Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):Avg Ambient Temperature (oC):ArizonaAmbientAir QualityStandards2Precipitation (inches)7:Date:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)1ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual40.06 NA23.85 NA32.67 NA93.75NARNA30 NA1.389 3.68300.3975 1.79301.132 3.83103.686 4.2640RR1.061 3.84700.0027 0.0024 * 0.0037 0.01680.0024 0.0000 * 0.0054 0.0005 *RR0.003 0.0000 *0.04260.11300.08300.37450.00420.0110 *0.00530.0062RR0.0070.02540.0144 0.0330 * 0.0181 0.08160.0117 0.0193 * 0.036 0.0417RR0.0099 0.0347 *0.0263 0.06970.083 0.37450.0073 0.0247NA NARRNA NA0.0012 0.0021 * 0.0021 0.0000 * 0.0041 0.01390.0076 0.0088RR0.0028 0.01010.0021 0.0015 *0.00600.02700.0018 0.0000 * 0.0036 0.0009 *RR0.00240.0000 *1.09 2.89100.3476 1.56800.9939 3.36403.061 3.5410RR0.6323 2.29200.2183 0.57900.0105 0.0000 * 0.0197 0.06662.112 2.4430RR0.0233 0.08450.00120.0027 *0.00090.00400.00090.0033 *0.00310.0036RR0.00190.00680.0192 0.0000 * 0.0102 0.0000 * 0.0129 0.0000 * 0.0318 0.0000 *RR0.0150.0000 *0.6582 1.74601.39 6.27000.1416 0.4793RRRR0.1489 0.53990.0021 0.0000 * 0.0033 0.0000 * 0.0012 0.0000 * 0.0024 0.0000 *RR0.0012 0.0000 *0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0021 0.0004 *RR0.0009 0.0000 *0.0021 0.0000 * 0.0018 0.0042 * 0.0018 0.0010 * 0.0036 0.0000 *RR0.0024 0.0000 *1.55 4.11000.7999 3.60901.036 3.50802.589 2.9950RR0.7966 2.88800.012 0.0000 * 0.006 0.0000 * 0.0102 0.0000 * 0.0243 0.0000 *RR0.0105 0.0000 *0.1163 0.30840.288 1.29900.0236 0.07980.0166 0.0192RR0.028 0.10140.3979 1.05500.081 0.2434 * 0.4217 1.42800.9092 1.0520RR0.0912 0.33080.021 0.05570.0053 0.02400.0153 0.05200.0493 0.0570RR0.0109 0.03960.0024 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 * 0.0039 0.0009 *RR0.0018 0.0000 *0.0097 0.02570.0172 0.07770.0027 0.0041 * 0.0051 0.0025 *RR0.0021 0.0063 *0.0024 0.0042 * 0.0024 0.0000 * 0.0021 0.0019 * 0.0042 0.0000 *RR0.0018 0.0032 *0.0021 0.0000 * 0.0018 0.0000 * 0.0018 0.0000 * 0.0039 0.0000 *RR0.0024 0.0000 *0.006 0.0136 * 0.0045 0.0000 * 0.0101 0.03430.0114 0.0043 *RR0.0054 0.0000 *0.6347 1.68300.1913 0.86320.442 1.49601.598 1.8480RR0.597 2.16400.0035 0.00940.0029 0.01300.0024 0.00800.0087 0.0100RR0.0018 0.00670.0237 0.06280.0308 0.13890.0012 0.00410.0018 0.0014 *RR0.0009 0.0015 *3.23 8.56601.022 4.61102.657 8.99509.149 10.5800RR3.114 11.29000.0021 0.0055 * 0.0027 0.01230.0018 0.0000 * 0.0036 0.0000 *RR0.0024 0.0000 *0.2867 0.76030.072 0.0000 * 0.1842 0.3019 * 1.71 1.9780RR0.0609 0.1173 *0.0085 0.02250.0024 0.01100.0066 0.02250.0287 0.0332RR0.004 0.01451.359 3.60501.195 5.39100.7562 2.56001.184 1.3700RR0.6592 2.39000.0027 0.0022 * 0.0027 0.0110 * 0.0024 0.0000 * 0.0051 0.0004 *RR0.003 0.0000 *0.1251 0.33190.0462 0.20840.1052 0.35610.2513 0.2907RR0.0847 0.30690.0045 0.0097 * 0.0018 0.0034 * 0.0039 0.0107 * 0.01 0.0116RR0.0033 0.0000 *0.003 0.0000 * 0.003 0.0017 * 0.0024 0.0000 * 0.0051 0.0000 *RR0.0012 0.0027 *0.0857 0.22740.219 0.98790.0174 0.05880.0212 0.0245RR0.0222 0.08040.0022 0.00590.0028 0.01270.0023 0.00770.0073 0.0084RR0.00180.0067Calm: 6.25%Calm: 0.00%Calm: 16.00%6.5NA05/31/084.0426126.76.0NA7.9NA05/22/087.4622920.005/28/084.9127424.95.5NA05/16/088.5705/19/085.7226031.05224.915.8NA6.7NA05/13/085.0330418.6TABLE 1Air Filter Sampling Laboratory Values for Inorganic ParametersHayden Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsPM10μg/m3----1507/508--1507--Aluminumμg/m3------5.1----Antimonyμg/m313,0001.46--------Arsenicμg/m32,5000.000441 -- 0.00045 --0.19Bariumμg/m3------0.52----Bismuthμg/m3------------Bromineμg/m3------------Cadmiumμg/m32500.00105-- 0.0011 ----Calciumμg/m3------------Chlorineμg/m3------------Chromiumμg/m31000.000158 -- 0.00016 ----Cobaltμg/m310,000 0.000686 -- 0.00069 ----Copperμg/m3----------100Galliumμg/m3------------Germaniumμg/m3------------Indiumμg/m3------------Ironμg/m3------------Lanthanumμg/m3------------Leadμg/m3----1.59 10--1.59 10--Magnesiumμg/m3------------Manganeseμg/m32,5000.0521-- 0.051----Mercuryμg/m31,0000.313--0.31--1.8Molybdenumμg/m3------------Nickelμg/m35,0000.0079-- 0.008--6Palladiumμg/m3------------Phosphorusμg/m3------------Potassiumμg/m3------------Rubidiumμg/m3------------Seleniumμg/m350018.3--------Siliconμg/m3------------Silverμg/m3------------Sodiumμg/m3------------Strontiumμg/m3------------Sulfurμg/m3------------Tinμg/m3------------Titaniumμg/m3------31----Vanadiumμg/m3------------Yttriumμg/m3------------Zincμg/m3------------Zirconiumμg/m3------------Table Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations, Title 18 Chapter 2 Article 17, December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards, Title 18 Chapter 2 Article 2, December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals, Ambient Air, October 2004mph4EPA National Ambient Air QualityStandards, http://www.epa.gov/air/criteria.html, February20085California Acute Reference Exposure Levels, March 19996With the exception of arsenic, the averaging time for all listed analytes is one hour. The averaging time for arsenic is four hours7The averaging time for the criteria is 24 hours.8The averaging time for the criteria is the annual arithmetic mean.9The averaging time for the criteria is the quarterly average.10Only the PM10 fraction is being measured not the total suspended particulates.11Samples are anticipated to be rejected by EPA during validation.12Percent of Total Mass13Precipitation measurements are recorded manually by a Hayden-Winkelman High School employee; reliability cannot be verifiedCalm: < 114Bold values with bold outline indicate the result exceeds one or more of the comparison criteriaWind direction15Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteriatoward center16* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.17-- = Not established18°C = Degrees Celsius19% = Percent20J = Estimated value21mph = milesper hour22NA = Not Applicable or Not Analyzed23NPR = Noprecipitation recorded.24NV = Not valid due to sample volume issues with the instrument.25μg/m3= Microgramsper cubic meter26PM10= particulate matter with a diameter less than or equal to 10 microns in size27R = Rejected28This table should be consideredpreliminaryand will be revised based on incomingdata, final data validation and QA/QCCaliforniaAcuteReferenceExposureLevels5 6EPANationalAmbientAir QualityStandards4EPARegion IXPreliminaryRemediationGoal3Avg Wind Speed mph):Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):Avg Ambient Temperature (oC):ArizonaAmbientAir QualityStandards2Precipitation (inches)7:Date:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)1ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual33.15 NA17.26 NAR NA53.37NA60.94NA40.22 NA1.29 4.27700.3854 2.4340RR1.64 3.37601.953 3.57201.288 3.56500.0027 0.0034 * 0.0024 0.0000 *RR0.0033 0.0000 * 0.0033 0.0000 * 0.003 0.0000 *0.00810.0258 *0.00630.0396RR0.02470.05080.03370.06160.01280.03530.0142 0.04710.0051 0.0054 *RR0.0213 0.04380.0276 0.0502 * 0.012 0.03310.0133 0.0440NA NARR0.0214 0.04400.0321 0.0587NA NA0.0036 0.01200.0013 0.0083RR0.0037 0.00770.006 0.01090.0043 0.01190.0018 0.0011 * 0.0018 0.0006 *RR0.00270.0022 *0.0030.00540.00240.0000 *0.9078 3.00900.266 1.6800RR1.55 3.19101.93 3.53101.088 3.01200.0895 0.29670.0154 0.0975RR0.3989 0.82110.0983 0.17980.0963 0.26650.00090.0027 * 0.0009 0.0015 *RR0.0020.00410.00180.0022 *0.00150.0040 *0.0138 0.0000 * 0.0048 0.0000 *RR0.02910.0000 *0.04350.0000 *0.02070.0000 *0.3412 1.13100.1273 0.8038RR0.6408 1.31900.6917 1.26500.3725 1.03100.0015 0.0000 * 0.0012 0.0000 *RR0.0015 0.0000 * 0.0018 0.0000 * 0.0012 0.0000 *0.0012 0.0000 * 0.0012 0.0000 *RR0.0009 0.0000 * 0.0012 0.0000 * 0.0009 0.0000 *0.0021 0.0000 * 0.0018 0.0000 *RR0.0027 0.0000 * 0.0027 0.0000 * 0.0027 0.0008 *1.106 3.66600.3049 1.9250RR1.575 3.24202.381 4.35501.113 3.08100.0099 0.0000 * 0.0045 0.0000 *RR0.0165 0.0000 * 0.0297 0.0000 * 0.0117 0.0000 *0.0547 0.18120.0185 0.1166RR0.0746 0.15360.1255 0.22950.033 0.09120.2324 0.77040.0712 0.4499RR0.1663 0.34240.2462 0.45030.1477 0.40900.0164 0.05430.0038 0.0241RR0.0255 0.05250.0319 0.05830.0189 0.05230.0021 0.0000 * 0.0021 0.0000 *RR0.0021 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 *0.0054 0.01790.0027 0.0089 *RR0.0076 0.01570.0096 0.01750.0048 0.01340.0024 0.0041 * 0.0021 0.0000 *RR0.0021 0.0003 * 0.0021 0.0000 * 0.0018 0.0014 *0.0021 0.0000 * 0.0018 0.0006 *RR0.0024 0.0000 * 0.0024 0.0000 * 0.0024 0.0000 *0.0061 0.02010.0033 0.0000 *RR0.0075 0.0000 * 0.0087 0.0000 * 0.0063 0.0000 *0.6488 2.15100.1996 1.2610RR0.816 1.67900.9153 1.67400.6629 1.83500.0028 0.00940.0009 0.0027 *RR0.0042 0.00870.0044 0.00800.0022 0.00610.0019 0.00620.0009 0.0027 *RR0.0107 0.02200.0163 0.02990.0066 0.01823.366 11.16001.06 6.6970RR4.52 9.30406.154 11.26003.696 10.23000.0018 0.0000 * 0.0018 0.0006 *RR0.0024 0.0000 * 0.0027 0.0029 * 0.0024 0.0005 *0.2058 0.4277 * 0.045 0.0000 *RR0.5801 1.19400.311 0.56890.2016 0.55810.0059 0.01970.0018 0.0116RR0.0116 0.02380.0137 0.02510.005 0.01390.9685 3.21100.3642 2.3000RR1.173 2.41401.424 2.60501.011 2.80000.0024 0.0002 * 0.0024 0.0012 *RR0.0033 0.0041 * 0.0033 0.0000 * 0.003 0.0034 *0.1001 0.33200.0247 0.1561RR0.1421 0.29250.2776 0.50790.0935 0.25880.0036 0.0103 * 0.0012 0.0003 *RR0.0057 0.0000 * 0.0105 0.0000 * 0.0039 0.0000 *0.00270.0000 * 0.0024 0.0000 *RR0.0012 0.0000 * 0.0015 0.0002 * 0.0012 0.0014 *0.0347 0.11520.0153 0.0966RR0.0638 0.13140.0676 0.12360.0258 0.07160.003 0.01000.0018 0.0059 *RR0.0032 0.00650.0045 0.00820.0022 0.0061Calm: 5.26%Calm: 18.75%Calm: 31.25%Calm: 18.75%Calm: 29.17%Calm: 33.33%06/18/085.1025933.95.7NA5.2NA5.2NA06/15/084.3526533.406/12/084.2326829.46.1NA06/03/084.3524928.25.6NA06/06/084.6623826.206/09/083.4822530.15.8NATABLE 1Air Filter Sampling Laboratory Values for Inorganic ParametersHayden Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsPM10μg/m3----1507/508--1507--Aluminumμg/m3------5.1----Antimonyμg/m313,0001.46--------Arsenicμg/m32,5000.000441 -- 0.00045 --0.19Bariumμg/m3------0.52----Bismuthμg/m3------------Bromineμg/m3------------Cadmiumμg/m32500.00105-- 0.0011 ----Calciumμg/m3------------Chlorineμg/m3------------Chromiumμg/m31000.000158 -- 0.00016 ----Cobaltμg/m310,000 0.000686 -- 0.00069 ----Copperμg/m3----------100Galliumμg/m3------------Germaniumμg/m3------------Indiumμg/m3------------Ironμg/m3------------Lanthanumμg/m3------------Leadμg/m3----1.59 10--1.59 10--Magnesiumμg/m3------------Manganeseμg/m32,5000.0521-- 0.051----Mercuryμg/m31,0000.313--0.31--1.8Molybdenumμg/m3------------Nickelμg/m35,0000.0079-- 0.008--6Palladiumμg/m3------------Phosphorusμg/m3------------Potassiumμg/m3------------Rubidiumμg/m3------------Seleniumμg/m350018.3--------Siliconμg/m3------------Silverμg/m3------------Sodiumμg/m3------------Strontiumμg/m3------------Sulfurμg/m3------------Tinμg/m3------------Titaniumμg/m3------31----Vanadiumμg/m3------------Yttriumμg/m3------------Zincμg/m3------------Zirconiumμg/m3------------Table Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations, Title 18 Chapter 2 Article 17, December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards, Title 18 Chapter 2 Article 2, December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals, Ambient Air, October 2004mph4EPA National Ambient Air QualityStandards, http://www.epa.gov/air/criteria.html, February20085California Acute Reference Exposure Levels, March 19996With the exception of arsenic, the averaging time for all listed analytes is one hour. The averaging time for arsenic is four hours7The averaging time for the criteria is 24 hours.8The averaging time for the criteria is the annual arithmetic mean.9The averaging time for the criteria is the quarterly average.10Only the PM10 fraction is being measured not the total suspended particulates.11Samples are anticipated to be rejected by EPA during validation.12Percent of Total Mass13Precipitation measurements are recorded manually by a Hayden-Winkelman High School employee; reliability cannot be verifiedCalm: < 114Bold values with bold outline indicate the result exceeds one or more of the comparison criteriaWind direction15Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteriatoward center16* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.17-- = Not established18°C = Degrees Celsius19% = Percent20J = Estimated value21mph = milesper hour22NA = Not Applicable or Not Analyzed23NPR = Noprecipitation recorded.24NV = Not valid due to sample volume issues with the instrument.25μg/m3= Microgramsper cubic meter26PM10= particulate matter with a diameter less than or equal to 10 microns in size27R = Rejected28This table should be consideredpreliminaryand will be revised based on incomingdata, final data validation and QA/QCCaliforniaAcuteReferenceExposureLevels5 6EPANationalAmbientAir QualityStandards4EPARegion IXPreliminaryRemediationGoal3Avg Wind Speed mph):Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):Avg Ambient Temperature (oC):ArizonaAmbientAir QualityStandards2Precipitation (inches)7:Date:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)1ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual60.24NA28.62 NA12.91 NA24.81 NA32.8 NARNA2.001 3.70600.7105 2.73300.2522 2.13100.7458 3.30200.7835 2.7450R R0.0089 0.01660.003 0.0092 * 0.0027 0.0000 * 0.0027 0.0040 * 0.0027 0.0000 *R R0.02630.04870.0170.06520.00210.0171 *0.00730.03210.01220.0429R R0.0239 0.04430.0116 0.04470.0051 0.0203 * 0.0087 0.0186 * 0.0123 0.0180 *R R0.032 0.05930.0607 0.2336NA NANA NA0.0113 0.0398NA NA0.0024 0.00440.0021 0.0000 * 0.0018 0.01510.0038 0.01690.0028 0.0097R R0.00270.0021 *0.00210.0072 *0.00180.0000 *0.00180.0021 *0.00180.0000 *R R1.152 2.13400.5005 1.92500.2502 2.11400.5857 2.59400.8282 2.9020R R0.0105 0.0000 * 0.012 0.0000 * 0.0051 0.0000 * 0.0063 0.0234 * 0.0066 0.0112 *R R0.00220.00410.00190.00720.00090.0000 *0.00090.0033 *0.00090.0000 *R R0.03180.0000 *0.01410.0000 *0.00450.0000 *0.00930.0000 *0.01260.0000 *R R1.126 2.08600.9327 3.58700.0743 0.62750.276 1.22200.3863 1.3540R R0.0018 0.0000 * 0.0039 0.0000 * 0.0012 0.0000 * 0.0015 0.0000 * 0.0015 0.0000 *R R0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 *R R0.0027 0.0000 * 0.0021 0.0000 * 0.0018 0.0000 * 0.0021 0.0000 * 0.0018 0.0000 *R R1.824 3.37901.122 4.31700.2707 2.28800.7223 3.19801.004 3.5190R R0.0153 0.0000 * 0.0087 0.0000 * 0.0042 0.0183 * 0.0075 0.0000 * 0.0105 0.0000 *R R0.1123 0.20800.3432 1.32000.0062 0.05210.0191 0.08440.047 0.1646R R0.136 0.25190.1482 0.56990.0657 0.55550.1703 0.75410.1858 0.6509R R0.0272 0.05040.012 0.04600.003 0.02510.0099 0.04400.0133 0.0467R R0.0021 0.0000 * 0.0024 0.0000 * 0.0021 0.0000 * 0.0021 0.0044 * 0.0024 0.0000 *R R0.0138 0.02550.0172 0.06630.0027 0.0000 * 0.0032 0.01420.0063 0.0221R R0.0021 0.0004 * 0.0024 0.0000 * 0.0021 0.0000 * 0.0024 0.0000 * 0.0024 0.0000 *R R0.0024 0.0012 * 0.0021 0.0000 * 0.0018 0.0000 * 0.0021 0.0000 * 0.0018 0.0000 *R R0.0078 0.0000 * 0.0054 0.0185 * 0.0039 0.0251 * 0.0091 0.04020.0048 0.0031 *R R1.061 1.96400.4368 1.68000.1712 1.44700.4595 2.03500.4159 1.4570R R0.0044 0.00810.0025 0.00980.0009 0.0004 * 0.0012 0.0044 * 0.0019 0.0068R R0.0047 0.00860.0287 0.11030.0015 0.01230.0024 0.01060.0039 0.0137R R5.542 10.26001.893 7.28000.6691 5.65402.135 9.45302.257 7.9070R R0.0027 0.0027 * 0.0021 0.0051 * 0.0018 0.0000 * 0.0018 0.0010 * 0.0021 0.0030 *R R0.1026 0.0141 * 0.066 0.0000 * 0.1634 1.38100.1764 0.5850 * 0.2004 0.6683 *R R0.00680.01260.0023 0.00890.0019 0.01630.0036 0.01580.0047 0.0163R R0.9092 1.6840 1.356 5.2150 0.6775 5.7260 0.8244 3.6510 0.9892 3.4660R R0.0033 0.0005 * 0.0027 0.0072 * 0.0024 0.0000 * 0.0024 0.0000 * 0.0033 0.0117R R0.1284 0.2378 0.0876 0.3370 0.0218 0.1846 0.0694 0.3073 0.1084 0.3797R R0.0051 0.0000 * 0.003 0.0058 * 0.0012 0.0020 * 0.0027 0.0067 * 0.0039 0.0120 *R R0.0012 0.0013 * 0.0027 0.0053 * 0.0015 0.0048 * 0.0015 0.0008 * 0.0015 0.0000 *R R0.0674 0.1249 0.1395 0.5366 0.0054 0.0454 0.015 0.0665 0.0335 0.1175R R0.0055 0.0101 0.0041 0.0158 0.0018 0.0056 * 0.0021 0.0081 * 0.0021 0.0031 *R RCalm: 8.33%Calm: 2.08%Calm: 22.92%Calm: 16.67%Calm: 14.58%Calm: 4.17%23.6NA07/21/084.3512729.07.8NA07/15/084.4107/18/085.4726133.224530.312.4NA20.7NA18.1NA07/12/083.6720628.607/09/086.219629.65.1NA06/21/086.0914634.5TABLE 1Air Filter Sampling Laboratory Values for Inorganic ParametersHayden Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsPM10μg/m3----1507/508--1507--Aluminumμg/m3------5.1----Antimonyμg/m313,0001.46--------Arsenicμg/m32,5000.000441 -- 0.00045 --0.19Bariumμg/m3------0.52----Bismuthμg/m3------------Bromineμg/m3------------Cadmiumμg/m32500.00105-- 0.0011 ----Calciumμg/m3------------Chlorineμg/m3------------Chromiumμg/m31000.000158 -- 0.00016 ----Cobaltμg/m310,000 0.000686 -- 0.00069 ----Copperμg/m3----------100Galliumμg/m3------------Germaniumμg/m3------------Indiumμg/m3------------Ironμg/m3------------Lanthanumμg/m3------------Leadμg/m3----1.59 10--1.59 10--Magnesiumμg/m3------------Manganeseμg/m32,5000.0521-- 0.051----Mercuryμg/m31,0000.313--0.31--1.8Molybdenumμg/m3------------Nickelμg/m35,0000.0079-- 0.008--6Palladiumμg/m3------------Phosphorusμg/m3------------Potassiumμg/m3------------Rubidiumμg/m3------------Seleniumμg/m350018.3--------Siliconμg/m3------------Silverμg/m3------------Sodiumμg/m3------------Strontiumμg/m3------------Sulfurμg/m3------------Tinμg/m3------------Titaniumμg/m3------31----Vanadiumμg/m3------------Yttriumμg/m3------------Zincμg/m3------------Zirconiumμg/m3------------Table Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations, Title 18 Chapter 2 Article 17, December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards, Title 18 Chapter 2 Article 2, December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals, Ambient Air, October 2004mph4EPA National Ambient Air QualityStandards, http://www.epa.gov/air/criteria.html, February20085California Acute Reference Exposure Levels, March 19996With the exception of arsenic, the averaging time for all listed analytes is one hour. The averaging time for arsenic is four hours7The averaging time for the criteria is 24 hours.8The averaging time for the criteria is the annual arithmetic mean.9The averaging time for the criteria is the quarterly average.10Only the PM10 fraction is being measured not the total suspended particulates.11Samples are anticipated to be rejected by EPA during validation.12Percent of Total Mass13Precipitation measurements are recorded manually by a Hayden-Winkelman High School employee; reliability cannot be verifiedCalm: < 114Bold values with bold outline indicate the result exceeds one or more of the comparison criteriaWind direction15Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteriatoward center16* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.17-- = Not established18°C = Degrees Celsius19% = Percent20J = Estimated value21mph = milesper hour22NA = Not Applicable or Not Analyzed23NPR = Noprecipitation recorded.24NV = Not valid due to sample volume issues with the instrument.25μg/m3= Microgramsper cubic meter26PM10= particulate matter with a diameter less than or equal to 10 microns in size27R = Rejected28This table should be consideredpreliminaryand will be revised based on incomingdata, final data validation and QA/QCCaliforniaAcuteReferenceExposureLevels5 6EPANationalAmbientAir QualityStandards4EPARegion IXPreliminaryRemediationGoal3Avg Wind Speed mph):Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):Avg Ambient Temperature (oC):ArizonaAmbientAir QualityStandards2Precipitation (inches)7:Date:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)1ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual18.32 NA 25.49 NA 23.55 NA 24.29 NA32.16 NA40.84 NA0.4081 2.4670 0.6469 2.8030 0.6554 3.0780 0.549 2.51900.9431 3.22901.463 3.94200.0027 0.0000 * 0.0027 0.0022 * 0.0027 0.0031 * 0.0024 0.0000 *0.0044 0.01520.0086 0.02310.01930.11670.00110.00470.00390.01840.01760.08060.05180.17750.04610.12430.006 0.0324 * 0.0072 0.0000 * 0.0066 0.0212 * 0.0063 0.0063 *0.0156 0.05340.0125 0.03360.0257 0.1551NA NANA NA0.0148 0.06810.06 0.20550.1407 0.37890.0009 0.0048 * 0.0035 0.01510.0037 0.01750.0033 0.01510.0018 0.0016 * 0.0033 0.0000 *0.00180.0094 *0.00180.0000 *0.00180.0031 *0.00180.0002 *0.00270.0092 *0.00830.02240.3812 2.30400.5005 2.16800.4175 1.96100.5033 2.31000.5763 1.97300.9106 2.45300.0063 0.0236 * 0.4031 1.74600.2072 0.97320.0568 0.26060.0135 0.0000 * 0.0291 0.0000 *0.00090.0026 *0.00090.0006 *0.00090.0035 *0.00090.0022 *0.00220.00740.00220.00600.00780.0000 *0.00630.0000 *0.00630.0000 *0.00630.0000 *0.0219 0.0000 * 0.024 0.0000 *0.4575 2.76600.0678 0.29390.115 0.54020.1693 0.77700.7693 2.63400.4193 1.12900.0018 0.0000 * 0.0012 0.0008 * 0.0012 0.0000 * 0.0015 0.0000 *0.0021 0.0000 * 0.0048 0.0000 *0.0012 0.0000 * 0.0012 0.0004 * 0.0012 0.0002 * 0.0012 0.0000 *0.0012 0.0000 * 0.0012 0.0000 *0.0018 0.0000 * 0.0018 0.0000 * 0.0018 0.0000 * 0.0018 0.0000 *0.0027 0.0000 * 0.003 0.0016 *0.6064 3.6660 0.4622 2.0020 0.4732 2.2220 0.4646 2.13201.244 4.2590 1.369 3.68700.0051 0.0000 * 0.0063 0.0049 * 0.0057 0.0000 * 0.0051 0.0000 *0.0087 0.0000 * 0.012 0.0000 *0.0731 0.4418 0.0011 0.0047 0.0132 0.0619 0.0347 0.15950.1629 0.55770.457 1.23100.0549 0.2997 * 0.1496 0.6480 0.117 0.5495 0.0917 0.42090.0432 0.0917 * 0.2041 0.54970.0051 0.0307 0.0086 0.0373 0.0104 0.0486 0.0077 0.03520.0121 0.04130.0185 0.04980.0024 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 * 0.0021 0.0026 *0.0021 0.0000 * 0.0021 0.0000 *0.0132 0.0797 0.0027 0.0053 * 0.0069 0.0323 0.0043 0.01970.0162 0.05560.0093 0.02510.0024 0.0000 * 0.0024 0.0065 * 0.0021 0.0053 * 0.0021 0.0076 *0.0021 0.0008 * 0.0021 0.0029 *0.0018 0.0000 * 0.0018 0.0000 * 0.0018 0.0000 * 0.0018 0.0009 *0.0024 0.0000 * 0.0024 0.0023 *0.0042 0.0000 * 0.0045 0.0000 * 0.0042 0.0000 * 0.0042 0.0032 *0.0063 0.0000 * 0.0072 0.0000 *0.2213 1.3380 0.4158 1.8010 0.4134 1.9420 0.3987 1.83000.6126 2.09700.6827 1.83900.0012 0.0063 * 0.0012 0.0029 * 0.0011 0.0053 0.0016 0.00730.0033 0.01140.0058 0.01570.0077 0.0464 0.0016 0.0067 0.0011 0.0053 0.0046 0.02100.0094 0.03220.0161 0.04351.147 6.93402.117 9.17301.948 9.15101.496 6.86602.546 8.71603.857 10.39000.0018 0.0000 * 0.0018 0.0008 * 0.0018 0.0004 * 0.0018 0.0019 *0.0024 0.0000 * 0.0024 0.0000 *0.1449 0.4574 * 0.6446 2.79200.3213 1.50900.3046 1.39800.0801 0.1523 * 0.111 0.0620 *0.0020.01200.0021 0.00920.0032 0.01480.0032 0.01490.0034 0.0116 0.0054 0.01460.8894 5.37700.8687 3.76300.5947 2.79300.9007 4.13301.24 4.24600.9417 2.53600.0027 0.0088 * 0.0027 0.0092 * 0.0027 0.0082 * 0.0036 0.01640.0038 0.01310.0036 0.0022 *0.0325 0.1964 0.0427 0.1848 0.041 0.1924 0.0363 0.16640.0638 0.21860.1115 0.30040.0015 0.0026 * 0.0035 0.0151 0.0018 0.0088 * 0.0015 0.0022 *0.0024 0.0000 * 0.0036 0.0048 *0.0015 0.0000 * 0.0015 0.0000 * 0.0015 0.0009 * 0.0015 0.0022 *0.0012 0.0000 * 0.0012 0.0000 *0.033 0.19950.0032 0.01370.0121 0.05680.0213 0.09790.0934 0.31980.1749 0.47120.0021 0.0060 * 0.0018 0.0037 * 0.0018 0.0000 * 0.0018 0.0050 *0.0033 0.01130.0043 0.0115Calm: 4.17%Calm: 18.75%Calm: 18.75%Calm: 6.25%Calm: 0.00%Calm: 0.00%12.8NA10.8NA08/08/085.7821130.208/05/085.2210130.99.0NA08/02/085.0326233.46.8NA07/27/085.1607/30/084.6025431.427131.810.9NA6.9NA07/24/084.4113831.9TABLE 1Air Filter Sampling Laboratory Values for Inorganic ParametersHayden Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsPM10μg/m3----1507/508--1507--Aluminumμg/m3------5.1----Antimonyμg/m313,0001.46--------Arsenicμg/m32,5000.000441 -- 0.00045 --0.19Bariumμg/m3------0.52----Bismuthμg/m3------------Bromineμg/m3------------Cadmiumμg/m32500.00105-- 0.0011 ----Calciumμg/m3------------Chlorineμg/m3------------Chromiumμg/m31000.000158 -- 0.00016 ----Cobaltμg/m310,000 0.000686 -- 0.00069 ----Copperμg/m3----------100Galliumμg/m3------------Germaniumμg/m3------------Indiumμg/m3------------Ironμg/m3------------Lanthanumμg/m3------------Leadμg/m3----1.59 10--1.59 10--Magnesiumμg/m3------------Manganeseμg/m32,5000.0521-- 0.051----Mercuryμg/m31,0000.313--0.31--1.8Molybdenumμg/m3------------Nickelμg/m35,0000.0079-- 0.008--6Palladiumμg/m3------------Phosphorusμg/m3------------Potassiumμg/m3------------Rubidiumμg/m3------------Seleniumμg/m350018.3--------Siliconμg/m3------------Silverμg/m3------------Sodiumμg/m3------------Strontiumμg/m3------------Sulfurμg/m3------------Tinμg/m3------------Titaniumμg/m3------31----Vanadiumμg/m3------------Yttriumμg/m3------------Zincμg/m3------------Zirconiumμg/m3------------Table Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations, Title 18 Chapter 2 Article 17, December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards, Title 18 Chapter 2 Article 2, December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals, Ambient Air, October 2004mph4EPA National Ambient Air QualityStandards, http://www.epa.gov/air/criteria.html, February20085California Acute Reference Exposure Levels, March 19996With the exception of arsenic, the averaging time for all listed analytes is one hour. The averaging time for arsenic is four hours7The averaging time for the criteria is 24 hours.8The averaging time for the criteria is the annual arithmetic mean.9The averaging time for the criteria is the quarterly average.10Only the PM10 fraction is being measured not the total suspended particulates.11Samples are anticipated to be rejected by EPA during validation.12Percent of Total Mass13Precipitation measurements are recorded manually by a Hayden-Winkelman High School employee; reliability cannot be verifiedCalm: < 114Bold values with bold outline indicate the result exceeds one or more of the comparison criteriaWind direction15Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteriatoward center16* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.17-- = Not established18°C = Degrees Celsius19% = Percent20J = Estimated value21mph = milesper hour22NA = Not Applicable or Not Analyzed23NPR = Noprecipitation recorded.24NV = Not valid due to sample volume issues with the instrument.25μg/m3= Microgramsper cubic meter26PM10= particulate matter with a diameter less than or equal to 10 microns in size27R = Rejected28This table should be consideredpreliminaryand will be revised based on incomingdata, final data validation and QA/QCCaliforniaAcuteReferenceExposureLevels5 6EPANationalAmbientAir QualityStandards4EPARegion IXPreliminaryRemediationGoal3Avg Wind Speed mph):Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):Avg Ambient Temperature (oC):ArizonaAmbientAir QualityStandards2Precipitation (inches)7:Date:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)1ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual35.79 NA15.99 NA23.43 NA32.1 NA40.7 NA29.01 NA1.222 3.79800.2516 1.72000.6262 2.94701.015 3.49501.799 4.79200.6785 2.54400.0057 0.01790.0082 0.05600.0146 0.06870.012 0.04120.0033 0.0000 * 0.0033 0.0046 *0.01220.03790.02140.14650.02830.13320.00890.03080.00550.01450.01240.04640.0126 0.03910.006 0.0000 * 0.0074 0.03500.0141 0.0276 * 0.0102 0.0167 * 0.0069 0.0072 *0.0103 0.03210.0554 0.37860.0547 0.2572NA NANA NANA NA0.003 0.00940.0015 0.0000 * 0.0018 0.0000 * 0.0013 0.00450.0023 0.00610.0012 0.0028 *0.0024 0.0016 *0.00330.02250.00270.0066 * 0.0027 0.0000 *0.00240.0050 *0.00210.0074 *0.9949 3.09300.218 1.49100.3428 1.61300.8532 2.93801.315 3.50300.5904 2.21400.0237 0.07360.012 0.0000 * 0.015 0.0000 * 0.0339 0.11690.0074 0.01980.0093 0.03500.00150.0045 *0.00120.0042 *0.00120.0042 * 0.0015 0.0000 *0.00120.0025 *0.00090.0039 *0.0291 0.0000 * 0.0087 0.0000 * 0.0126 0.0000 * 0.0213 0.0000 * 0.015 0.0000 * 0.009 0.0000 *0.5123 1.59300.5127 3.50600.5358 2.52100.3036 1.04600.1197 0.31890.1377 0.51640.0015 0.0000 * 0.0021 0.0000 * 0.0024 0.0000 * 0.0015 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 *0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0015 0.0000 * 0.0015 0.0000 *0.0027 0.0000 * 0.0027 0.0000 * 0.003 0.0000 * 0.003 0.0000 * 0.0024 0.0000 * 0.0021 0.0000 *1.661 5.16400.4639 3.17200.6931 3.26101.196 4.12001.146 3.05100.6667 2.50000.012 0.0000 * 0.006 0.0000 * 0.0069 0.0000 * 0.015 0.0000 * 0.0108 0.0000 * 0.0075 0.0000 *0.0417 0.12950.1646 1.12500.1981 0.93240.0363 0.12480.0136 0.03620.0462 0.17340.1669 0.51870.0607 0.41500.0363 0.1316 * 0.1358 0.46770.3997 1.06500.1975 0.74050.0184 0.05720.0036 0.02480.0069 0.03230.0171 0.05890.0284 0.07580.0105 0.03960.0021 0.0000 * 0.0021 0.0000 * 0.0024 0.0000 * 0.0021 0.0000 * 0.003 0.0000 * 0.0027 0.0000 *0.0099 0.03090.0055 0.03730.0134 0.06310.0033 0.01150.0033 0.0005 * 0.0033 0.0064 *0.0021 0.0019 * 0.0021 0.0000 * 0.0021 0.0075 * 0.0021 0.0006 * 0.0033 0.0066 * 0.003 0.0039 *0.0024 0.0000 * 0.0024 0.0000 * 0.0024 0.0000 * 0.0024 0.0000 * 0.0024 0.0000 * 0.0024 0.0000 *0.0063 0.0000 * 0.0048 0.0000 * 0.0057 0.0000 * 0.0063 0.0000 * 0.0058 0.01540.0039 0.0129 *0.6997 2.17500.1646 1.12500.3947 1.85700.5085 1.75100.6629 1.76600.3253 1.22000.0031 0.00970.0015 0.01000.0017 0.00820.0026 0.00910.004 0.01080.0015 0.0042 *0.0016 0.00480.007 0.04800.0175 0.08220.0021 0.00710.0012 0.0019 * 0.0015 0.00553.224 10.02000.6794 4.64601.786 8.40602.854 9.82804.568 12.17001.872 7.01800.0024 0.0000 * 0.0024 0.0048 * 0.0024 0.0049 * 0.0024 0.0023 * 0.0024 0.0003 * 0.0021 0.0039 *0.2039 0.63380.0546 0.1378 * 0.1614 0.4298 * 0.0714 0.0814 * 0.1731 0.2385 * 0.1395 0.2456 *0.0053 0.01640.0009 0.0052 * 0.002 0.00950.0048 0.01670.0084 0.02240.0024 0.00920.9718 3.02100.7336 5.01601.045 4.91700.7496 2.58100.4549 1.21200.7519 2.82000.0036 0.0083 * 0.0036 0.0190 * 0.0036 0.0051 * 0.0036 0.0028 * 0.003 0.0036 * 0.003 0.0095 *0.1077 0.33480.032 0.21860.0419 0.19700.1465 0.50440.1125 0.29970.0727 0.27260.0036 0.0070 * 0.0015 0.0000 * 0.0018 0.0009 * 0.0048 0.0096 * 0.0039 0.0073 * 0.0027 0.0023 *0.0012 0.0009 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 *0.0427 0.13280.057 0.38950.0905 0.42590.0203 0.07000.0129 0.03420.0415 0.15560.0037 0.01140.0027 0.01840.0026 0.01220.0019 0.00650.0035 0.00940.0024 0.0081 *Calm: 0.00%Calm: 0.00%Calm: 0.00%Calm: 8.33%7.7NA09/12/084.7209/18/083.9816427.320425.08.7NA9.0NA17.5NA08/20/083.7317530.808/17/085.3417130.519.4NA08/11/085.4108/14/084.6612028.323432.87.3NATABLE 1Air Filter Sampling Laboratory Values for Inorganic ParametersHayden Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsPM10μg/m3----1507/508--1507--Aluminumμg/m3------5.1----Antimonyμg/m313,0001.46--------Arsenicμg/m32,5000.000441 -- 0.00045 --0.19Bariumμg/m3------0.52----Bismuthμg/m3------------Bromineμg/m3------------Cadmiumμg/m32500.00105-- 0.0011 ----Calciumμg/m3------------Chlorineμg/m3------------Chromiumμg/m31000.000158 -- 0.00016 ----Cobaltμg/m310,000 0.000686 -- 0.00069 ----Copperμg/m3----------100Galliumμg/m3------------Germaniumμg/m3------------Indiumμg/m3------------Ironμg/m3------------Lanthanumμg/m3------------Leadμg/m3----1.59 10--1.59 10--Magnesiumμg/m3------------Manganeseμg/m32,5000.0521-- 0.051----Mercuryμg/m31,0000.313--0.31--1.8Molybdenumμg/m3------------Nickelμg/m35,0000.0079-- 0.008--6Palladiumμg/m3------------Phosphorusμg/m3------------Potassiumμg/m3------------Rubidiumμg/m3------------Seleniumμg/m350018.3--------Siliconμg/m3------------Silverμg/m3------------Sodiumμg/m3------------Strontiumμg/m3------------Sulfurμg/m3------------Tinμg/m3------------Titaniumμg/m3------31----Vanadiumμg/m3------------Yttriumμg/m3------------Zincμg/m3------------Zirconiumμg/m3------------Table Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations, Title 18 Chapter 2 Article 17, December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards, Title 18 Chapter 2 Article 2, December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals, Ambient Air, October 2004mph4EPA National Ambient Air QualityStandards, http://www.epa.gov/air/criteria.html, February20085California Acute Reference Exposure Levels, March 19996With the exception of arsenic, the averaging time for all listed analytes is one hour. The averaging time for arsenic is four hours7The averaging time for the criteria is 24 hours.8The averaging time for the criteria is the annual arithmetic mean.9The averaging time for the criteria is the quarterly average.10Only the PM10 fraction is being measured not the total suspended particulates.11Samples are anticipated to be rejected by EPA during validation.12Percent of Total Mass13Precipitation measurements are recorded manually by a Hayden-Winkelman High School employee; reliability cannot be verifiedCalm: < 114Bold values with bold outline indicate the result exceeds one or more of the comparison criteriaWind direction15Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteriatoward center16* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.17-- = Not established18°C = Degrees Celsius19% = Percent20J = Estimated value21mph = milesper hour22NA = Not Applicable or Not Analyzed23NPR = Noprecipitation recorded.24NV = Not valid due to sample volume issues with the instrument.25μg/m3= Microgramsper cubic meter26PM10= particulate matter with a diameter less than or equal to 10 microns in size27R = Rejected28This table should be consideredpreliminaryand will be revised based on incomingdata, final data validation and QA/QCCaliforniaAcuteReferenceExposureLevels5 6EPANationalAmbientAir QualityStandards4EPARegion IXPreliminaryRemediationGoal3Avg Wind Speed mph):Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):Avg Ambient Temperature (oC):ArizonaAmbientAir QualityStandards2Precipitation (inches)7:Date:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)1ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual34.77 NA56.77NA32.73 NAR NA48.73 NAR NA0.8277 2.6070 0.7726 1.4910 0.9511 3.1060 R R 1.605 3.5010 R R0.0037 0.0117 0.0054 0.0104 0.003 0.0000 * R R 0.0036 0.0055 * R R0.02220.06980.15540.29980.00950.0309 R R0.03840.0838 R R0.0062 0.0194 0.0293 0.0565 0.0078 0.0131 * R R 0.0186 0.0405 R RNA NA NA NA NA NA NA NA 0.0584 0.1274 NA NA0.0015 0.0025 * 0.0057 0.0000 * 0.0021 0.0068 R R 0.0018 0.0034 * R R0.00240.0065 *0.02030.0392 0.0021 0.0014 * R R0.00420.0091 R R0.5254 1.6550 0.8781 1.6940 0.7227 2.3600 R R 1.467 3.2010 R R0.0135 0.0424 0.0219 0.0226 * 0.0213 0.0696 R R 0.0437 0.0954 R R0.00120.00370.00400.00770.00090.0026 * R R0.00360.0079 R R0.0099 0.0000 * 0.0291 0.0000 * 0.0126 0.0000 * R R 0.0372 0.0000 * R R0.4854 1.5290 3.821 7.3710 0.2504 0.8176 R R 1.341 2.9270 R R0.0027 0.0000 * 0.0096 0.0000 * 0.0018 0.0000 * R R 0.003 0.0000 * R R0.0015 0.0000 * 0.0018 0.0000 * 0.0012 0.0000 * R R 0.0018 0.0000 * R R0.0024 0.0000 * 0.0027 0.0045 * 0.0021 0.0000 * R R 0.0024 0.0006 * R R0.7364 2.3190 2.26 4.3600 0.9699 3.1670 R R 2.898 6.3230 R R0.0063 0.0000 * 0.0111 0.0000 * 0.0084 0.0000 * R R 0.0162 0.0000 * R R0.1263 0.3979 0.9676 1.8670 0.02 0.0652 R R 0.1968 0.4294 R R0.1096 0.3452 0.0957 0.1351 * 0.2259 0.7375 R R 0.3714 0.8103 R R0.0084 0.0265 0.0103 0.0199 0.0124 0.0406 R R 0.026 0.0568 R R0.0033 0.0000 * 0.0042 0.0000 * 0.0027 0.0002 * R R 0.0033 0.0000 * R R0.0093 0.0292 0.085 0.1640 0.0048 0.0158 R R 0.0351 0.0765 R R0.0033 0.0000 * 0.0036 0.0000 * 0.003 0.0061 * R R 0.0036 0.0000 * R R0.0024 0.0000 * 0.0027 0.0000 * 0.0024 0.0000 * R R 0.0024 0.0000 * R R0.0036 0.0000 * 0.012 0.0000 * 0.0036 0.0038 * R R 0.0051 0.0088 * R R0.5203 1.6390 0.4668 0.9005 0.3818 1.2470 R R 0.7256 1.5830 R R0.0017 0.0053 0.0076 0.0146 0.0015 0.0034 * R R 0.0041 0.0089 R R0.0036 0.0114 0.0458 0.0884 0.0016 0.0054 R R 0.0156 0.0341 R R2.299 7.2410 2.412 4.6530 2.556 8.3450 R R 4.289 9.3570 R R0.0024 0.0047 * 0.01 0.0193 0.0021 0.0006 * R R 0.0024 0.0049 * R R0.0558 0.0991 * 0.2298 0.0000 * 0.0507 0.0727 * R R 0.0747 0.0000 * R R0.0035 0.0111 0.0036 0.0070 0.0051 0.0166 R R 0.008 0.0175 R R0.8061 2.5390 3.743 7.2210 0.5537 1.8080 R R 1.004 2.1910 R R0.0033 0.0085 * 0.0061 0.0117 0.0027 0.0000 * R R 0.0033 0.0061 * R R0.0531 0.1671 0.0904 0.1744 0.0844 0.2757 R R 0.1772 0.3867 R R0.0021 0.0025 * 0.0039 0.0068 * 0.0033 0.0095 * R R 0.0063 0.0104 * R R0.0024 0.0000 * 0.0063 0.0053 * 0.0018 0.0002 * R R 0.0027 0.0031 * R R0.0938 0.2954 0.7133 1.3760 0.0316 0.1033 R R 0.1694 0.3695 R R0.0027 0.0040 * 0.005 0.0096 0.0032 0.0103 R R 0.0049 0.0107 R RCalm: 0.00% Calm: 0.00% Calm: 20.83% Calm: 0.00% Calm: 4.17%6.7NA6.9NA10/25/083.6718619.310/22/088.893921.37.7NA10/06/083.6010/12/083.9126713.811722.06.2NA5.6NA8.9NA09/30/087.276930.209/24/085.6511029.3TABLE 1Air Filter Sampling Laboratory Values for Inorganic ParametersHayden Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsPM10μg/m3----1507/508--1507--Aluminumμg/m3------5.1----Antimonyμg/m313,0001.46--------Arsenicμg/m32,5000.000441 -- 0.00045 --0.19Bariumμg/m3------0.52----Bismuthμg/m3------------Bromineμg/m3------------Cadmiumμg/m32500.00105-- 0.0011 ----Calciumμg/m3------------Chlorineμg/m3------------Chromiumμg/m31000.000158 -- 0.00016 ----Cobaltμg/m310,000 0.000686 -- 0.00069 ----Copperμg/m3----------100Galliumμg/m3------------Germaniumμg/m3------------Indiumμg/m3------------Ironμg/m3------------Lanthanumμg/m3------------Leadμg/m3----1.59 10--1.59 10--Magnesiumμg/m3------------Manganeseμg/m32,5000.0521-- 0.051----Mercuryμg/m31,0000.313--0.31--1.8Molybdenumμg/m3------------Nickelμg/m35,0000.0079-- 0.008--6Palladiumμg/m3------------Phosphorusμg/m3------------Potassiumμg/m3------------Rubidiumμg/m3------------Seleniumμg/m350018.3--------Siliconμg/m3------------Silverμg/m3------------Sodiumμg/m3------------Strontiumμg/m3------------Sulfurμg/m3------------Tinμg/m3------------Titaniumμg/m3------31----Vanadiumμg/m3------------Yttriumμg/m3------------Zincμg/m3------------Zirconiumμg/m3------------Table Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations, Title 18 Chapter 2 Article 17, December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards, Title 18 Chapter 2 Article 2, December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals, Ambient Air, October 2004mph4EPA National Ambient Air QualityStandards, http://www.epa.gov/air/criteria.html, February20085California Acute Reference Exposure Levels, March 19996With the exception of arsenic, the averaging time for all listed analytes is one hour. The averaging time for arsenic is four hours7The averaging time for the criteria is 24 hours.8The averaging time for the criteria is the annual arithmetic mean.9The averaging time for the criteria is the quarterly average.10Only the PM10 fraction is being measured not the total suspended particulates.11Samples are anticipated to be rejected by EPA during validation.12Percent of Total Mass13Precipitation measurements are recorded manually by a Hayden-Winkelman High School employee; reliability cannot be verifiedCalm: < 114Bold values with bold outline indicate the result exceeds one or more of the comparison criteriaWind direction15Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteriatoward center16* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.17-- = Not established18°C = Degrees Celsius19% = Percent20J = Estimated value21mph = milesper hour22NA = Not Applicable or Not Analyzed23NPR = Noprecipitation recorded.24NV = Not valid due to sample volume issues with the instrument.25μg/m3= Microgramsper cubic meter26PM10= particulate matter with a diameter less than or equal to 10 microns in size27R = Rejected28This table should be consideredpreliminaryand will be revised based on incomingdata, final data validation and QA/QCCaliforniaAcuteReferenceExposureLevels5 6EPANationalAmbientAir QualityStandards4EPARegion IXPreliminaryRemediationGoal3Avg Wind Speed mph):Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):Avg Ambient Temperature (oC):ArizonaAmbientAir QualityStandards2Precipitation (inches)7:Date:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)1ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12Qual ResultPercent12QualR NA177.21NA32.81 NAR NA37.59 NAR NAR R7.2134.25300.5057 3.9020RR1.073 2.9760RRRR0.0042 0.0021 * 0.0033 0.0000 *RR0.0078 0.0189 *RRR R0.02990.01770.0027 0.0029 *RR0.04690.1302RRRR0.0596 0.03510.0066 0.0138 *RR0.0169 0.0468RRRR0.0383 0.0226NA NARR0.0433 0.1202RRRR0.0019 0.00110.0012 0.0062 *RR0.0012 0.0026 *RRR R0.0030.0016 * 0.0021 0.0000 *RR0.00370.0102RRRR3.902 2.30100.4625 3.5690RR1.223 3.3930RRRR0.2103 0.12400.0083 0.0643RR0.0105 0.0000 *RRR R0.01040.00610.00090.0029 *RR0.00150.0037 *RRRR0.0573 0.0000 * 0.0072 0.0000 *RR0.01770.0037 *RRRR1.172 0.69130.0845 0.6518RR0.7524 2.0880RRRR0.0027 0.0000 * 0.0018 0.0000 *RR0.0021 0.0000 *RRRR0.0018 0.0000 * 0.0015 0.0007 *RR0.0012 0.0000 *RRRR0.0027 0.0000 * 0.0021 0.0000 *RR0.003 0.0020 *RRRR7.161 4.22300.5989 4.6220RR1.342 3.7230RRRR0.0552 0.0000 * 0.0072 0.0000 *RR0.0105 0.0000 *RRRR0.0887 0.05230.0071 0.0545RR0.111 0.3079RRRR1.273 0.75050.1311 1.0120RR0.0486 0.0000 *RRR R0.11130.06560.0096 0.0741RR0.0173 0.0481RRRR0.0039 0.0000 * 0.003 0.0109 *RR0.0024 0.0000 *RRRR0.0428 0.02530.0033 0.0109 *RR0.0171 0.0474RRRR0.0042 0.0001 * 0.003 0.0149 *RR0.0024 0.0000 *RRRR0.003 0.0000 * 0.0024 0.0000 *RR0.0024 0.0012 *RRRR0.0216 0.0026 * 0.0027 0.0000 *RR0.0066 0.0000 *RRRR3.573 2.10700.2516 1.9410RR0.5222 1.4490RRRR0.0274 0.01620.0017 0.0134RR0.0032 0.0089RRRR0.0074 0.00440.0012 0.0015 *RR0.0256 0.0711RRRR18.74 11.05001.427 11.0100RR2.86 7.9360RRRR0.003 0.0011 * 0.0021 0.0004 *RR0.0027 0.0022 *RRRR1.6269 0.5450 * 0.1143 0.6431 *RR0.0846 0.0000 *RRRR0.0347 0.02050.0027 0.0211RR0.0062 0.0172RRRR1.688 0.99530.1282 0.9894RR0.8338 2.3140RRRR0.0047 0.00280.0027 0.0069 *RR0.0036 0.0048 *RRRR0.6163 0.36340.0686 0.5290RR0.088 0.2443RRRR0.0266 0.01570.0027 0.0113 *RR0.003 0.0026 *RRRR0.0047 0.00270.0021 0.0000 *RR0.0015 0.0000 *RRRR0.1012 0.05970.0083 0.0643RR0.0805 0.2234RRRR0.0263 0.01550.0024 0.0047 *RR0.0018 0.0026 *RRCalm: 0.00%Calm: 0.00%Calm: 10.00%Calm: 0.00%Calm: 0.00%Calm: 0.00%35.4NA11/24/087.3311/27/08113.679513.67516.510.4NA7.3NA7.3NA11/21/081114.606316.911/12/082.111297.812.7NA10/28/089.1311/09/086.4616813.05225.06.2NATABLE 1Air Filter Sampling Laboratory Values for Inorganic ParametersHayden Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsPM10μg/m3----1507/508--1507--Aluminumμg/m3------5.1----Antimonyμg/m313,0001.46--------Arsenicμg/m32,5000.000441 -- 0.00045 --0.19Bariumμg/m3------0.52----Bismuthμg/m3------------Bromineμg/m3------------Cadmiumμg/m32500.00105-- 0.0011 ----Calciumμg/m3------------Chlorineμg/m3------------Chromiumμg/m31000.000158 -- 0.00016 ----Cobaltμg/m310,000 0.000686 -- 0.00069 ----Copperμg/m3----------100Galliumμg/m3------------Germaniumμg/m3------------Indiumμg/m3------------Ironμg/m3------------Lanthanumμg/m3------------Leadμg/m3----1.59 10--1.59 10--Magnesiumμg/m3------------Manganeseμg/m32,5000.0521-- 0.051----Mercuryμg/m31,0000.313--0.31--1.8Molybdenumμg/m3------------Nickelμg/m35,0000.0079-- 0.008--6Palladiumμg/m3------------Phosphorusμg/m3------------Potassiumμg/m3------------Rubidiumμg/m3------------Seleniumμg/m350018.3--------Siliconμg/m3------------Silverμg/m3------------Sodiumμg/m3------------Strontiumμg/m3------------Sulfurμg/m3------------Tinμg/m3------------Titaniumμg/m3------31----Vanadiumμg/m3------------Yttriumμg/m3------------Zincμg/m3------------Zirconiumμg/m3------------Table Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations, Title 18 Chapter 2 Article 17, December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards, Title 18 Chapter 2 Article 2, December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals, Ambient Air, October 2004mph4EPA National Ambient Air QualityStandards, http://www.epa.gov/air/criteria.html, February20085California Acute Reference Exposure Levels, March 19996With the exception of arsenic, the averaging time for all listed analytes is one hour. The averaging time for arsenic is four hours7The averaging time for the criteria is 24 hours.8The averaging time for the criteria is the annual arithmetic mean.9The averaging time for the criteria is the quarterly average.10Only the PM10 fraction is being measured not the total suspended particulates.11Samples are anticipated to be rejected by EPA during validation.12Percent of Total Mass13Precipitation measurements are recorded manually by a Hayden-Winkelman High School employee; reliability cannot be verifiedCalm: < 114Bold values with bold outline indicate the result exceeds one or more of the comparison criteriaWind direction15Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteriatoward center16* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.17-- = Not established18°C = Degrees Celsius19% = Percent20J = Estimated value21mph = milesper hour22NA = Not Applicable or Not Analyzed23NPR = Noprecipitation recorded.24NV = Not valid due to sample volume issues with the instrument.25μg/m3= Microgramsper cubic meter26PM10= particulate matter with a diameter less than or equal to 10 microns in size27R = Rejected28This table should be consideredpreliminaryand will be revised based on incomingdata, final data validation and QA/QCCaliforniaAcuteReferenceExposureLevels5 6EPANationalAmbientAir QualityStandards4EPARegion IXPreliminaryRemediationGoal3Avg Wind Speed mph):Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):Avg Ambient Temperature (oC):ArizonaAmbientAir QualityStandards2Precipitation (inches)7:Date:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)1ResultPercent12Qual21.24 NA0.5094 2.82400.0092 0.05120.01690.09370.0069 0.0256 *0.0133 0.07360.0015 0.00840.0027 0.0047 *0.3144 1.74200.0072 0.0000 *0.00120.0052 *0.0078 0.0000 *0.1819 1.00800.0015 0.0000 *0.0012 0.0000 *0.0027 0.0000 *0.5528 3.06400.0069 0.0000 *0.0328 0.18160.0567 0.2330 *0.005 0.02770.0024 0.0000 *0.0045 0.02480.0024 0.0000 *0.0024 0.0000 *0.0045 0.0000 *0.3112 1.72500.0009 0.0029 *0.0044 0.02451.31 7.26300.0024 0.0000 *0.0495 0.0010 *0.0014 0.00760.4751 2.63300.0033 0.0031 *0.0471 0.26100.0018 0.0003 *0.0015 0.0000 *0.0217 0.12000.0018 0.0060 *Calm: 9.52%25.1NA11/30/083.3625912.1TABLE 2Air Filter Sampling Laboratory Values for Inorganic ParametersWinkelman Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11QualPM10μg/m3----1507/508--1507--17.61 NA10.44 NA9.8 NA2.19 NA12.47 NA17.8 NAAluminumμg/m3------5.1----0.1953 1.12900.1867 1.82200.2025 2.14100.0066 0.0000 * 0.3324 2.79900.6921 4.1840Antimonyμg/m313,0001.46--------0.003 0.0144 * 0.0027 0.0041 * 0.0030 0.0174 * 0.0027 0.0161 * 0.0027 0.0000 * 0.0027 0.0000 *Arsenicμg/m32,5000.000441 -- 0.00045 --0.190.02490.14400.00480.04730.00490.05230.0009 0.0000 *0.00210.0107 *0.00240.0151 *Bariumμg/m3------0.52----0.0129 0.07430.0042 0.0069 * 0.0048 0.0005 * 0.0036 0.0530 * 0.0054 0.0012 * 0.0072 0.0239 *Bismuthμg/m3------------0.0472 0.2728NA NANA NANA NANA NANA NABromineμg/m3------------0.0018 0.0008 * 0.0014 0.01330.0009 0.0095 * 0.0010 0.04840.0034 0.02890.0018 0.0111Cadmiumμg/m32500.00105-- 0.0011 ----0.00240.0084 *0.00240.0000 * 0.0018 0.0000 * 0.0018 0.0000 * 0.0021 0.0000 * 0.0018 0.0003 *Calciumμg/m3------------0.2573 1.48800.2064 2.01300.2365 2.50000.0024 0.11760.2968 2.49900.6408 3.8740Chlorineμg/m3------------0.0135 0.0000 * 0.0051 0.0000 * 0.2168 2.29200.0039 0.0000 * 0.1107 0.93220.1081 0.6535Chromiumμg/m31000.000158 -- 0.00016 ----0.00090.0000 *0.00090.0023 * 0.0009 0.0045 * 0.0009 0.0000 * 0.0009 0.0028 * 0.0009 0.0011 *Cobaltμg/m310,000 0.000686 -- 0.00069 ----0.00870.0000 *0.00450.0000 * 0.0045 0.0000 * 0.0027 0.0000 * 0.0051 0.0000 * 0.0066 0.0000 *Copperμg/m3----------100 0.9360 5.41300.1093 1.06700.0788 0.83330.0402 1.1390 * 0.0538 0.45320.0761 0.4600Galliumμg/m3------------0.0024 0.0000 * 0.0009 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0016 * 0.0012 0.0000 *Germaniumμg/m3------------0.0009 0.0000 * 0.0009 0.0000 * 0.0012 0.0085 * 0.0012 0.0138 * 0.0012 0.0032 * 0.0012 0.0000 *Indiumμg/m3------------0.0024 0.0000 * 0.0024 0.0000 * 0.0021 0.0000 * 0.0021 0.0023 * 0.0021 0.0000 * 0.0018 0.0000 *Ironμg/m3------------0.4438 2.56600.1831 1.78600.1768 1.86900.0048 0.23520.2250 1.89500.4722 2.8550Lanthanumμg/m3------------0.0051 0.0000 * 0.0045 0.0101 * 0.0075 0.0000 * 0.0030 0.0484 * 0.0090 0.0020 * 0.006 0.0000 *Leadμg/m3----1.59 10--1.59 10--0.2067 1.19600.0181 0.17640.0155 0.16430.0024 0.0138 * 0.0044 0.03730.0101 0.0609Magnesiumμg/m3------------0.0249 0.0400 * 0.0342 0.1952 * 0.0429 0.45400.0123 0.0000 * 0.0873 0.73510.1484 0.8969Manganeseμg/m32,5000.0521--0.051----0.0037 0.02120.0019 0.01880.0026 0.02740.0012 0.0000 * 0.0032 0.02660.0096 0.0578Mercuryμg/m31,0000.313--0.31--1.8 0.0018 0.0000 * 0.0015 0.0000 * 0.0027 0.0134 * 0.0024 0.0092 * 0.0027 0.0059 * 0.0021 0.0000 *Molybdenumμg/m3------------0.0079 0.04570.0018 0.0041 * 0.0033 0.0080 * 0.0030 0.0669 * 0.0033 0.0000 * 0.005 0.0305Nickelμg/m35,0000.0079--0.008--60.0015 0.0000 * 0.0019 0.01880.0024 0.0000 * 0.0021 0.0000 * 0.0024 0.0000 * 0.0021 0.0074 *Palladiumμg/m3------------0.0021 0.0000 * 0.0021 0.0000 * 0.0018 0.0000 * 0.0018 0.0115 * 0.0018 0.0000 * 0.0018 0.0023 *Phosphorusμg/m3------------0.0048 0.0000 * 0.0036 0.0000 * 0.0033 0.0000 * 0.0024 0.0000 * 0.0039 0.0000 * 0.0039 0.0000 *Potassiumμg/m3------------0.1426 0.82480.0913 0.89110.1071 1.13200.0021 0.0092 * 0.1072 0.90240.2775 1.6780Rubidiumμg/m3------------0.0012 0.00710.0006 0.0000 * 0.0012 0.0025 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0015 0.0091Seleniumμg/m350018.3--------0.0100 0.05770.0039 0.03770.0014 0.01490.0009 0.0300 * 0.0009 0.0067 * 0.0009 0.0009 *Siliconμg/m3------------0.6173 3.57000.5113 4.98900.5532 5.84900.0048 0.0000 * 0.8367 7.04601.806 10.9200Silverμg/m3------------0.0024 0.0084 * 0.0021 0.0000 * 0.0018 0.0000 * 0.0018 0.0115 * 0.0018 0.0056 * 0.0018 0.0028 *Sodiumμg/m3------------0.1866 1.0550 * 0.1236 0.5880 * 0.2351 2.48600.0315 0.2998 * 0.1236 0.8445 * 0.2114 1.2780Strontiumμg/m3------------0.0016 0.00900.0014 0.01380.0027 0.02890.0015 0.0000 * 0.0024 0.02060.0037 0.0222Sulfurμg/m3------------1.3870 8.02200.4422 4.31400.2147 2.27000.0018 0.0438 * 0.3204 2.69800.3056 1.8480Tinμg/m3------------0.0027 0.0030 * 0.003 0.0239 * 0.0030 0.0080 * 0.0030 0.0507 * 0.0030 0.0059 * 0.0024 0.0000 *Titaniumμg/m3------31----0.0193 0.11160.0177 0.17270.0170 0.17920.0009 0.0346 * 0.0214 0.18000.0488 0.2952Vanadiumμg/m3------------0.0012 0.0000 * 0.0009 0.0000 * 0.0012 0.0015 * 0.0006 0.0208 * 0.0012 0.0028 * 0.0021 0.0000 *Yttriumμg/m3------------0.0021 0.0000 * 0.0009 0.0000 * 0.0018 0.0050 * 0.0018 0.0300 * 0.0018 0.0048 * 0.0024 0.0000 *Zincμg/m3------------0.0723 0.41800.0137 0.13410.0120 0.12690.0018 0.0115 * 0.0049 0.04120.0128 0.0771Zirconiumμg/m3------------0.0012 0.0046 * 0.0012 0.0014 * 0.0024 0.0025 * 0.0021 0.0115 * 0.0024 0.0004 * 0.0018 0.0111 *Table Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations,Title 18 Chapter 2 Article 17,December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards,Title 18 Chapter 2 Article 2,December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals,Ambient Air,October 2004mph4EPA National Ambient Air QualityStandards,http://www.epa.gov/air/criteria.html,February20085California Acute Reference Exposure Levels,March 19996With the exception of arsenic,the averagingtime for all listed analytes is one hour. The averagingtime for arsenic is four hours.7The averagingtime for the criteria is 24 hours.8The averagingtime for the criteria is the annual arithmetic mean.9The averagingtime for the criteria is thequarterlyaverage.10Onlythe PM10 fraction is beingmeasured not the total suspendedparticulates.11Percent of Total Mass12Precipitation measurements are recorded manuallybya Hayden-Winkelman High School employee;reliabilitycannot be verified.13Bold values with bold outline indicate the result exceeds one or more of the comparison criteria.14Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteria.Calm: < 115* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.Wind direction16-- = Not establishedtoward centerCalm:35.42%Calm:29.17%Calm:10.42%Calm:18.75%Calm:37.50%Calm: 0.00%17°C = Degrees Celsius18% = Percent19J = Estimated value20mph = milesper hour21NA = Not Applicable or Not Analyzed22NPR = Noprecipitation recorded.23μg/m3= Microgramsper cubic meter24PM10=particulate matter with a diameter less than or equal to 10 microns in size25R = Rejected26This table should be consideredpreliminaryand will be revised based on incomingdata,final data validation and QA/QC.7.9NA5/16/089.266724.97.1NA3/31/083.8530617.216.6NA3/28/083.8532620.96.8NA2/23/084.9129614.21/12/2008 2/17/20081.68 2.98281 315NANA9.89.319.424.0CaliforniaAcuteReferenceExposureLevels5 6ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaAmbientAir QualityStandards2Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):Avg Ambient Temperature (oC):Avg Wind Speed (mph):EPARegion IXPreliminaryRemediationGoal3Precipitation (inches)3:Date:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)1EPANationalAmbientAir QualityStandards4TABLE 2Air Filter Sampling Laboratory Values for Inorganic ParametersWinkelman Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsPM10μg/m3----1507/508--1507--Aluminumμg/m3------5.1----Antimonyμg/m313,0001.46--------Arsenicμg/m32,5000.000441 -- 0.00045 --0.19Bariumμg/m3------0.52----Bismuthμg/m3------------Bromineμg/m3------------Cadmiumμg/m32500.00105-- 0.0011 ----Calciumμg/m3------------Chlorineμg/m3------------Chromiumμg/m31000.000158 -- 0.00016 ----Cobaltμg/m310,000 0.000686 -- 0.00069 ----Copperμg/m3----------100Galliumμg/m3------------Germaniumμg/m3------------Indiumμg/m3------------Ironμg/m3------------Lanthanumμg/m3------------Leadμg/m3----1.59 10--1.59 10--Magnesiumμg/m3------------Manganeseμg/m32,5000.0521--0.051----Mercuryμg/m31,0000.313--0.31--1.8Molybdenumμg/m3------------Nickelμg/m35,0000.0079--0.008--6Palladiumμg/m3------------Phosphorusμg/m3------------Potassiumμg/m3------------Rubidiumμg/m3------------Seleniumμg/m350018.3--------Siliconμg/m3------------Silverμg/m3------------Sodiumμg/m3------------Strontiumμg/m3------------Sulfurμg/m3------------Tinμg/m3------------Titaniumμg/m3------31----Vanadiumμg/m3------------Yttriumμg/m3------------Zincμg/m3------------Zirconiumμg/m3------------Table Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations,Title 18 Chapter 2 Article 17,December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards,Title 18 Chapter 2 Article 2,December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals,Ambient Air,October 2004mph4EPA National Ambient Air QualityStandards,http://www.epa.gov/air/criteria.html,February20085California Acute Reference Exposure Levels,March 19996With the exception of arsenic,the averagingtime for all listed analytes is one hour. The averagingtime for arsenic is four hours.7The averagingtime for the criteria is 24 hours.8The averagingtime for the criteria is the annual arithmetic mean.9The averagingtime for the criteria is thequarterlyaverage.10Onlythe PM10 fraction is beingmeasured not the total suspendedparticulates.11Percent of Total Mass12Precipitation measurements are recorded manuallybya Hayden-Winkelman High School employee;reliabilitycannot be verified.13Bold values with bold outline indicate the result exceeds one or more of the comparison criteria.14Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteria.Calm: < 115* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.Wind direction16-- = Not establishedtoward center17°C = Degrees Celsius18% = Percent19J = Estimated value20mph = milesper hour21NA = Not Applicable or Not Analyzed22NPR = Noprecipitation recorded.23μg/m3= Microgramsper cubic meter24PM10=particulate matter with a diameter less than or equal to 10 microns in size25R = Rejected26This table should be consideredpreliminaryand will be revised based on incomingdata,final data validation and QA/QC.CaliforniaAcuteReferenceExposureLevels5 6ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaAmbientAir QualityStandards2Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):Avg Ambient Temperature (oC):Avg Wind Speed (mph):EPARegion IXPreliminaryRemediationGoal3Precipitation (inches)3:Date:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)1EPANationalAmbientAir QualityStandards4ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual15.58 NA 26.05 NA R NA 24.74 NA 12.45 NA 26.09 NA0.3645 2.58800.7491 3.0840RR0.5071 2.23300.3562 3.16600.8522 3.64600.0024 0.0000 * 0.0027 0.0109 *RR0.0033 0.01450.0024 0.0000 * 0.003 0.0000 *0.01290.09130.00650.0266RR0.00900.0375 *0.00510.04520.00940.04030.0048 0.0000 * 0.012 0.0494RR0.0072 0.0309 * 0.0048 0.0000 * 0.0123 0.05260.0092 0.06550.0061 0.0250NA NA0.0251 0.1107NA NANA NA0.0009 0.0033 * 0.0037 0.0153RR0.0056 0.02490.0018 0.01590.0029 0.01250.0018 0.0027 * 0.0018 0.0033 *RR0.0018 0.0073 * 0.0018 0.0000 *0.00240.0000 *0.3159 2.24300.7185 2.9580RR0.4485 1.97500.3101 2.75700.8395 3.59100.0048 0.0000 * 0.0066 0.0240 *RR0.042 0.18490.0115 0.10210.356 1.52300.00290.02040.00210.0087RR0.00090.0023 * 0.0009 0.0013 *0.00120.0042 *0.0045 0.0000 * 0.018 0.0000 *RR0.0141 0.0000 * 0.0045 0.0000 *0.01740.0000 *0.1704 1.21000.8042 3.3110RR1.09 4.79800.1379 1.22500.3774 1.61400.0012 0.0000 * 0.0015 0.0000 *RR0.0018 0.0000 * 0.0015 0.0000 * 0.0012 0.0000 *0.0009 0.0020 * 0.0012 0.0000 *RR0.0012 0.0000 * 0.0012 0.0000 * 0.0009 0.0000 *0.0018 0.0000 * 0.0018 0.0014 *RR0.0018 0.0010 * 0.0018 0.0000 * 0.0024 0.0000 *0.3048 2.16401.457 5.9970RR1.125 4.95300.2983 2.65100.944 4.03900.0042 0.0000 * 0.0069 0.0000 *RR0.0057 0.0000 * 0.0042 0.0000 * 0.009 0.0000 *0.0309 0.21960.0375 0.1545RR0.0986 0.43420.0227 0.20210.0246 0.10530.0506 0.35940.183 0.7532RR0.1202 0.52910.0821 0.72990.096 0.41050.0048 0.03440.0104 0.0428RR0.0077 0.03400.0042 0.03720.0129 0.05500.0018 0.0094 * 0.0021 0.0000 *RR0.0021 0.0000 * 0.0021 0.0000 * 0.0018 0.0000 *0.0024 0.0000 * 0.0117 0.0481RR0.0119 0.05250.0027 0.0193 * 0.003 0.01270.0021 0.0027 * 0.0024 0.0000 *RR0.0024 0.0000 * 0.0021 0.0029 * 0.0018 0.0000 *0.0018 0.0000 * 0.0018 0.0000 *RR0.0021 0.0000 * 0.0018 0.0000 * 0.0021 0.0034 *0.0036 0.0000 * 0.0052 0.0213RR0.0042 0.0000 * 0.0033 0.0000 * 0.0054 0.0000 *0.1659 1.17800.3093 1.2730RR0.3361 1.48000.1481 1.31600.4234 1.81100.0009 0.0053 * 0.0016 0.0064RR0.0009 0.0046 * 0.0009 0.0013 * 0.0009 0.0036 *0.0019 0.01370.0035 0.0145RR0.0066 0.02900.0009 0.0092 * 0.0011 0.00480.9506 6.75001.974 8.1250RR1.426 6.28000.9261 8.23202.336 9.99500.0018 0.0007 * 0.0018 0.0002 *RR0.0018 0.0035 * 0.0018 0.0021 * 0.0024 0.0000 *0.0447 0.1611 * 0.0573 0.0000 *RR0.1962 0.6301 * 0.1245 0.5449 * 0.3564 1.52500.0027 0.01940.0058 0.0240RR0.0027 0.01180.0026 0.02300.0077 0.03280.5923 4.20600.7166 2.9500RR0.8993 3.96000.2835 2.52000.6799 2.90900.0024 0.0053 * 0.0024 0.0000 *RR0.0024 0.0000 * 0.0024 0.0029 * 0.003 0.0054 *0.0234 0.16620.0582 0.2396RR0.0444 0.19530.0211 0.18790.0639 0.27350.0012 0.0000 * 0.0024 0.0033 *RR0.0018 0.0019 * 0.0012 0.0000 * 0.0027 0.0000 *0.0024 0.0000 * 0.0024 0.0000 *RR0.0027 0.0000 * 0.0024 0.0000 * 0.0012 0.0000 *0.024 0.17050.0488 0.2008RR0.0817 0.35970.0169 0.14980.0255 0.10900.0015 0.0053 * 0.0018 0.0060 *RR0.0018 0.0000 * 0.0023 0.02010.0015 0.0052 *Calm: 22.92%Calm: 6.25%Calm: 31.25%Calm: 31.25%Calm: 31.25%Calm: 25.00%5.6NA6/9/083.2327930.76.1NA5/22/087.335/28/085.0331025.26.9NA5/31/084.0430727.326717.65.6NA22.0NA5/19/084.9729231.14.236/12/0829.6302NA5.7TABLE 2Air Filter Sampling Laboratory Values for Inorganic ParametersWinkelman Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsPM10μg/m3----1507/508--1507--Aluminumμg/m3------5.1----Antimonyμg/m313,0001.46--------Arsenicμg/m32,5000.000441 -- 0.00045 --0.19Bariumμg/m3------0.52----Bismuthμg/m3------------Bromineμg/m3------------Cadmiumμg/m32500.00105-- 0.0011 ----Calciumμg/m3------------Chlorineμg/m3------------Chromiumμg/m31000.000158 -- 0.00016 ----Cobaltμg/m310,000 0.000686 -- 0.00069 ----Copperμg/m3----------100Galliumμg/m3------------Germaniumμg/m3------------Indiumμg/m3------------Ironμg/m3------------Lanthanumμg/m3------------Leadμg/m3----1.59 10--1.59 10--Magnesiumμg/m3------------Manganeseμg/m32,5000.0521--0.051----Mercuryμg/m31,0000.313--0.31--1.8Molybdenumμg/m3------------Nickelμg/m35,0000.0079--0.008--6Palladiumμg/m3------------Phosphorusμg/m3------------Potassiumμg/m3------------Rubidiumμg/m3------------Seleniumμg/m350018.3--------Siliconμg/m3------------Silverμg/m3------------Sodiumμg/m3------------Strontiumμg/m3------------Sulfurμg/m3------------Tinμg/m3------------Titaniumμg/m3------31----Vanadiumμg/m3------------Yttriumμg/m3------------Zincμg/m3------------Zirconiumμg/m3------------Table Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations,Title 18 Chapter 2 Article 17,December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards,Title 18 Chapter 2 Article 2,December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals,Ambient Air,October 2004mph4EPA National Ambient Air QualityStandards,http://www.epa.gov/air/criteria.html,February20085California Acute Reference Exposure Levels,March 19996With the exception of arsenic,the averagingtime for all listed analytes is one hour. The averagingtime for arsenic is four hours.7The averagingtime for the criteria is 24 hours.8The averagingtime for the criteria is the annual arithmetic mean.9The averagingtime for the criteria is thequarterlyaverage.10Onlythe PM10 fraction is beingmeasured not the total suspendedparticulates.11Percent of Total Mass12Precipitation measurements are recorded manuallybya Hayden-Winkelman High School employee;reliabilitycannot be verified.13Bold values with bold outline indicate the result exceeds one or more of the comparison criteria.14Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteria.Calm: < 115* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.Wind direction16-- = Not establishedtoward center17°C = Degrees Celsius18% = Percent19J = Estimated value20mph = milesper hour21NA = Not Applicable or Not Analyzed22NPR = Noprecipitation recorded.23μg/m3= Microgramsper cubic meter24PM10=particulate matter with a diameter less than or equal to 10 microns in size25R = Rejected26This table should be consideredpreliminaryand will be revised based on incomingdata,final data validation and QA/QC.CaliforniaAcuteReferenceExposureLevels5 6ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaAmbientAir QualityStandards2Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):Avg Ambient Temperature (oC):Avg Wind Speed (mph):EPARegion IXPreliminaryRemediationGoal3Precipitation (inches)3:Date:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)1EPANationalAmbientAir QualityStandards4ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual31.39 NA 26.51 NA 34.04 NA 32.37 NA 13.32 NA 11.06 NA0.9271 3.29600.6154 2.59100.9817 3.21900.8689 3.00000.374 3.10600.2798 2.82100.003 0.0000 * 0.0083 0.03510.0062 0.02020.0051 0.01770.0033 0.0063 * 0.0036 0.0351 *0.01470.05220.01870.07870.00760.02490.02180.07530.00150.0039 *0.00150.0052 *0.0159 0.05640.0172 0.07260.0145 0.04740.0141 0.04860.0071 0.05900.0048 0.0275 *0.0129 0.04590.0144 0.0607NA NA0.0178 0.0614NA NANA NA0.0066 0.02360.0033 0.01410.0028 0.00910.0037 0.01260.0025 0.02110.0015 0.01470.00240.0013 *0.00270.0040 *0.00240.0000 *0.00270.0040 *0.00240.0000 *0.00240.0000 *0.8673 3.08400.5824 2.45200.7204 2.36200.7394 2.55300.3131 2.60000.2934 2.95900.1265 0.44980.0164 0.06900.0075 0.0211 * 0.0087 0.0163 * 0.0054 0.0000 * 0.0048 0.0000 *0.00120.0042 *0.00190.00810.00120.0036 *0.00120.0020 *0.00120.0051 *0.00090.0043 *0.01710.0000 *0.02130.0000 *0.01830.0000 *0.01590.0000 *0.00630.0000 *0.00480.0000 *0.2927 1.04101.09 4.59100.5914 1.93900.528 1.82300.1085 0.90130.0305 0.30720.0012 0.0000 * 0.0015 0.0000 * 0.0012 0.0000 * 0.0015 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 *0.0009 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0009 0.0000 * 0.0009 0.0000 *0.0027 0.0000 * 0.0027 0.0000 * 0.0027 0.0000 * 0.0027 0.0000 * 0.0024 0.0000 * 0.0024 0.0000 *0.9261 3.29301.151 4.84700.9817 3.21900.848 2.92800.3029 2.51600.2094 2.11100.0105 0.0000 * 0.0078 0.0000 * 0.0087 0.0000 * 0.009 0.0000 * 0.0057 0.0000 * 0.0051 0.0014 *0.0459 0.16310.0586 0.24680.0264 0.08660.0579 0.19990.0075 0.06260.0032 0.03280.119 0.42300.0675 0.2617 * 0.0399 0.0039 * 0.0849 0.29310.0279 0.1247 * 0.0243 0.0000 *0.0142 0.05060.0081 0.03430.0111 0.03640.0113 0.03900.0038 0.03130.0035 0.03560.0018 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 * 0.0018 0.0000 * 0.0018 0.0000 *0.004 0.01420.0127 0.05330.007 0.02280.0044 0.01530.0021 0.0008 * 0.0021 0.0000 *0.0018 0.0027 * 0.0021 0.0000 * 0.0021 0.0040 * 0.0021 0.0000 * 0.0018 0.0063 * 0.0018 0.0119 *0.0021 0.0000 * 0.0024 0.0000 * 0.0024 0.0012 * 0.0024 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 *0.0057 0.0000 * 0.0057 0.0000 * 0.0057 0.0000 * 0.006 0.0000 * 0.0045 0.0000 * 0.0039 0.0000 *0.5405 1.92200.3485 1.46700.441 1.44600.4442 1.53400.2149 1.78500.1343 1.35400.0024 0.00840.0013 0.00540.0015 0.00490.0024 0.00820.0009 0.0051 * 0.001 0.01040.0014 0.00500.0067 0.02830.0009 0.0009 * 0.003 0.01030.0009 0.0070 * 0.0009 0.0028 *2.584 9.18901.708 7.19002.517 8.25302.23 7.69800.9789 8.12900.7698 7.76300.0024 0.0000 * 0.0024 0.0040 * 0.0024 0.0032 * 0.0024 0.0000 * 0.0024 0.0043 * 0.0024 0.0000 *0.2386 0.84840.1749 0.7119 * 0.0648 0.0638 * 0.159 0.3558 * 0.1137 0.7394 * 0.0396 0.0684 *0.0061 0.02180.0038 0.01590.0045 0.01470.0056 0.01950.0024 0.02030.0024 0.02420.75 2.66701.144 4.81500.6578 2.15700.924 3.19000.4765 3.95700.3483 3.51200.003 0.0027 * 0.0033 0.0008 * 0.0033 0.0062 * 0.0033 0.0074 * 0.003 0.0066 * 0.003 0.0024 *0.0808 0.28740.044 0.18520.0599 0.19650.0624 0.21560.0286 0.23730.021 0.21180.0033 0.0000 * 0.0024 0.0000 * 0.0027 0.0000 * 0.0027 0.0000 * 0.0015 0.0051 * 0.0012 0.0000 *0.0012 0.0002 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0052 *0.0294 0.10460.049 0.20620.0267 0.08770.0465 0.16040.0033 0.02740.0032 0.03180.0015 0.0050 * 0.0015 0.0054 * 0.0015 0.0048 * 0.0015 0.0029 * 0.0012 0.0059 * 0.0015 0.0085 *Calm: 25.00%Calm: 43.75%Calm: 16.67%Calm: 22.92%Calm: 10.42%Calm: 2.08%10.15.3NANA2918931.434.56/27/086/30/084.166.966/24/084.474.975.474.166/15/086/18/086/21/0828933.834.234.634.63042931975.2NANANANA5.35.25.2TABLE 2Air Filter Sampling Laboratory Values for Inorganic ParametersWinkelman Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11QualPM10μg/m3----1507/508--1507--26.58 NA17.76 NA6.56 NA10.33 NA16.18 NA7.54 NAAluminumμg/m3------5.1----0.646 2.72000.4549 2.84300.0931 1.56300.1359 1.43700.3511 2.38700.0568 0.8266Antimonyμg/m313,0001.46--------0.0033 0.0044 * 0.0027 0.0000 * 0.0027 0.0000 * 0.0024 0.0005 * 0.0024 0.0000 * 0.0024 0.0000 *Arsenicμg/m32,5000.000441 -- 0.00045 --0.190.00730.03050.00480.03000.00120.01980.00210.0144 *0.00480.03270.00360.0520Bariumμg/m3------0.52----0.0095 0.04000.0066 0.0062 * 0.0039 0.0332 * 0.0042 0.0124 * 0.0051 0.0003 * 0.0036 0.0000 *Bismuthμg/m3------------0.0081 0.0339NA NANA NANA NANA NANA NABromineμg/m3------------0.0032 0.01370.0026 0.01620.0009 0.0111 * 0.0024 0.02490.0038 0.02560.0009 0.0116 *Cadmiumμg/m32500.00105-- 0.0011 ----0.00240.0000 *0.00180.0000 *0.00180.0000 *0.00180.0000 *0.00180.0000 *0.00180.0027 *Calciumμg/m3------------0.5174 2.17900.3937 2.46100.0845 1.41800.1666 1.76100.3133 2.13000.0583 0.8485Chlorineμg/m3------------0.0087 0.03650.0054 0.0188 * 0.0042 0.0000 * 0.0048 0.0000 * 0.0051 0.0000 * 0.0039 0.0247 *Chromiumμg/m31000.000158 -- 0.00016 ----0.00120.0048 *0.00090.0044 *0.00090.0000 *0.00090.0000 *0.00090.0054 *0.00090.0000 *Cobaltμg/m310,000 0.000686 -- 0.00069 ----0.01290.0000 *0.00540.0000 *0.00270.0000 *0.00330.0000 *0.00480.0000 *0.00270.0000 *Copperμg/m3----------100 0.3802 1.60100.0961 0.60060.0203 0.34060.0529 0.55900.2044 1.39000.0384 0.5582Galliumμg/m3------------0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0103 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 *Germaniumμg/m3------------0.0009 0.0000 * 0.0012 0.0000 * 0.0012 0.0087 * 0.0012 0.0005 * 0.0009 0.0000 * 0.0012 0.0034 *Indiumμg/m3------------0.0024 0.0000 * 0.0018 0.0012 * 0.0018 0.0000 * 0.0018 0.0000 * 0.0018 0.0000 * 0.0018 0.0000 *Ironμg/m3------------0.6827 2.87500.3754 2.34600.0694 1.16400.1487 1.57300.3483 2.36800.0621 0.9026Lanthanumμg/m3------------0.0078 0.0000 * 0.0057 0.0024 * 0.0027 0.0119 * 0.003 0.0159 * 0.0045 0.0045 * 0.0021 0.0068 *Leadμg/m3----1.59 10--1.59 10--0.0294 0.12390.0141 0.08830.0027 0.0190 * 0.0067 0.07120.0175 0.11910.01 0.1452Magnesiumμg/m3------------0.0363 0.0852 * 0.0583 0.36430.0345 0.3580 * 0.0414 0.3256 * 0.0869 0.59060.0141 0.0000 *Manganeseμg/m32,5000.0521--0.051----0.0082 0.03470.0058 0.03620.0012 0.0150 * 0.0017 0.01790.0044 0.03010.0012 0.0082 *Mercuryμg/m31,0000.313--0.31--1.8 0.0018 0.0000 * 0.0021 0.0024 * 0.0021 0.0190 * 0.0021 0.0000 * 0.0021 0.0000 * 0.0021 0.0021 *Molybdenumμg/m3------------0.0044 0.01840.003 0.0112 * 0.0027 0.0071 * 0.0027 0.0065 * 0.0031 0.02080.0027 0.0158 *Nickelμg/m35,0000.0079--0.008--60.0018 0.0036 * 0.0021 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 * 0.0021 0.0064 * 0.0021 0.0000 *Palladiumμg/m3------------0.0021 0.0000 * 0.0018 0.0000 * 0.0018 0.0055 * 0.0018 0.0000 * 0.0018 0.0000 * 0.0018 0.0000 *Phosphorusμg/m3------------0.0054 0.0000 * 0.0042 0.0238 * 0.003 0.0498 * 0.0039 0.0368 * 0.0054 0.03650.007 0.1020Potassiumμg/m3------------0.3527 1.48500.2431 1.52000.0503 0.84390.1177 1.24400.2294 1.56000.0546 0.7937Rubidiumμg/m3------------0.0016 0.00690.0012 0.0074 * 0.0009 0.0000 * 0.0009 0.0010 * 0.0009 0.0000 * 0.0009 0.0000 *Seleniumμg/m350018.3--------0.0023 0.00950.0009 0.0053 * 0.0011 0.01820.0012 0.01240.0025 0.01700.0016 0.0240Siliconμg/m3------------1.675 7.05401.119 6.99200.2219 3.72300.3871 4.09201.003 6.82200.1386 2.0160Silverμg/m3------------0.0024 0.0000 * 0.0018 0.0000 * 0.0018 0.0000 * 0.0018 0.0000 * 0.0018 0.0038 * 0.0018 0.0000 *Sodiumμg/m3------------0.213 0.89670.1509 0.7754 * 0.0357 0.2300 * 0.1733 1.83200.1515 0.9437 * 0.1002 0.4746 *Strontiumμg/m3------------0.0036 0.01510.0027 0.01680.0012 0.0063 * 0.0012 0.0129 * 0.002 0.01380.0012 0.0000 *Sulfurμg/m3------------0.847 3.56600.6239 3.89900.2364 3.96800.6352 6.71500.7284 4.95200.316 4.5960Tinμg/m3------------0.003 0.0042 * 0.0024 0.0000 * 0.0024 0.0024 * 0.0024 0.0000 * 0.0024 0.0000 * 0.0027 0.0226 *Titaniumμg/m3------31----0.0531 0.22360.0446 0.27900.0097 0.16280.0129 0.13690.0273 0.18530.0039 0.0568Vanadiumμg/m3------------0.0024 0.0012 * 0.0018 0.0012 * 0.0009 0.0016 * 0.0011 0.01140.0012 0.0000 * 0.0006 0.0014 *Yttriumμg/m3------------0.0012 0.0000 * 0.0015 0.0015 * 0.0015 0.0000 * 0.0015 0.0000 * 0.0015 0.0000 * 0.0015 0.0000 *Zincμg/m3------------0.0173 0.07300.0134 0.08360.0036 0.06010.0054 0.05720.0107 0.07300.0094 0.1370Zirconiumμg/m3------------0.0016 0.00670.0018 0.0077 * 0.0018 0.0000 * 0.0018 0.0000 * 0.0018 0.0013 * 0.0018 0.0000 *Table Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations,Title 18 Chapter 2 Article 17,December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards,Title 18 Chapter 2 Article 2,December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals,Ambient Air,October 2004mph4EPA National Ambient Air QualityStandards,http://www.epa.gov/air/criteria.html,February20085California Acute Reference Exposure Levels,March 19996With the exception of arsenic,the averagingtime for all listed analytes is one hour. The averagingtime for arsenic is four hours.7The averagingtime for the criteria is 24 hours.8The averagingtime for the criteria is the annual arithmetic mean.9The averagingtime for the criteria is thequarterlyaverage.10Onlythe PM10 fraction is beingmeasured not the total suspendedparticulates.11Percent of Total Mass12Precipitation measurements are recorded manuallybya Hayden-Winkelman High School employee;reliabilitycannot be verified.13Bold values with bold outline indicate the result exceeds one or more of the comparison criteria.14Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteria.Calm: < 115* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.Wind direction16-- = Not establishedtoward centerCalm: 4.17%Calm: 27.08%Calm: 12.50%Calm: 33.33%Calm: 39.58%Calm: 39.58%17°C = Degrees Celsius18% = Percent19J = Estimated value20mph = milesper hour21NA = Not Applicable or Not Analyzed22NPR = Noprecipitation recorded.23μg/m3= Microgramsper cubic meter24PM10=particulate matter with a diameter less than or equal to 10 microns in size25R = Rejected26This table should be consideredpreliminaryand will be revised based on incomingdata,final data validation and QA/QC.13.7NA7/3/085.032334.26.2NA14.9NA7/6/085.287/9/084.7811229.6331.37/12/083.2325828.8Precipitation (inches)3:22.6NA7/15/083.3629130.618.5NAAvg Ambient Temperature (oC):NA7/21/082.98177Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):25.529.3Avg Wind Speed (mph):EPARegion IXPreliminaryRemediationGoal3Date:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)1EPANationalAmbientAir QualityStandards4CaliforniaAcuteReferenceExposureLevels5 6ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaAmbientAir QualityStandards2TABLE 2Air Filter Sampling Laboratory Values for Inorganic ParametersWinkelman Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsPM10μg/m3----1507/508--1507--Aluminumμg/m3------5.1----Antimonyμg/m313,0001.46--------Arsenicμg/m32,5000.000441 -- 0.00045 --0.19Bariumμg/m3------0.52----Bismuthμg/m3------------Bromineμg/m3------------Cadmiumμg/m32500.00105-- 0.0011 ----Calciumμg/m3------------Chlorineμg/m3------------Chromiumμg/m31000.000158 -- 0.00016 ----Cobaltμg/m310,000 0.000686 -- 0.00069 ----Copperμg/m3----------100Galliumμg/m3------------Germaniumμg/m3------------Indiumμg/m3------------Ironμg/m3------------Lanthanumμg/m3------------Leadμg/m3----1.59 10--1.59 10--Magnesiumμg/m3------------Manganeseμg/m32,5000.0521--0.051----Mercuryμg/m31,0000.313--0.31--1.8Molybdenumμg/m3------------Nickelμg/m35,0000.0079--0.008--6Palladiumμg/m3------------Phosphorusμg/m3------------Potassiumμg/m3------------Rubidiumμg/m3------------Seleniumμg/m350018.3--------Siliconμg/m3------------Silverμg/m3------------Sodiumμg/m3------------Strontiumμg/m3------------Sulfurμg/m3------------Tinμg/m3------------Titaniumμg/m3------31----Vanadiumμg/m3------------Yttriumμg/m3------------Zincμg/m3------------Zirconiumμg/m3------------Table Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations,Title 18 Chapter 2 Article 17,December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards,Title 18 Chapter 2 Article 2,December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals,Ambient Air,October 2004mph4EPA National Ambient Air QualityStandards,http://www.epa.gov/air/criteria.html,February20085California Acute Reference Exposure Levels,March 19996With the exception of arsenic,the averagingtime for all listed analytes is one hour. The averagingtime for arsenic is four hours.7The averagingtime for the criteria is 24 hours.8The averagingtime for the criteria is the annual arithmetic mean.9The averagingtime for the criteria is thequarterlyaverage.10Onlythe PM10 fraction is beingmeasured not the total suspendedparticulates.11Percent of Total Mass12Precipitation measurements are recorded manuallybya Hayden-Winkelman High School employee;reliabilitycannot be verified.13Bold values with bold outline indicate the result exceeds one or more of the comparison criteria.14Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteria.Calm: < 115* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.Wind direction16-- = Not establishedtoward center17°C = Degrees Celsius18% = Percent19J = Estimated value20mph = milesper hour21NA = Not Applicable or Not Analyzed22NPR = Noprecipitation recorded.23μg/m3= Microgramsper cubic meter24PM10=particulate matter with a diameter less than or equal to 10 microns in size25R = Rejected26This table should be consideredpreliminaryand will be revised based on incomingdata,final data validation and QA/QC.Precipitation (inches)3:Avg Ambient Temperature (oC):Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):Avg Wind Speed (mph):EPARegion IXPreliminaryRemediationGoal3Date:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)1EPANationalAmbientAir QualityStandards4CaliforniaAcuteReferenceExposureLevels5 6ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaAmbientAir QualityStandards2ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual12.61 NA 19.92 NA 19.42 NA 21.55 NA 20.04 NA 27.41 NA0.1904 1.67300.4661 2.58400.5457 3.11100.4831 2.49900.4817 2.65101.002 4.02300.0027 0.0149 * 0.0024 0.0021 * 0.0027 0.0072 * 0.0027 0.0037 * 0.0107 0.05880.0078 0.03120.01620.14280.00280.01540.00650.03680.02120.10960.030.16510.00390.01570.0051 0.0000 * 0.0063 0.0000 * 0.0066 0.0319 * 0.006 0.0268 * 0.0078 0.0000 * 0.0084 0.0300 *0.0292 0.2570NA NANA NA0.0168 0.08690.0316 0.1742NA NA0.0009 0.0075 * 0.0027 0.01490.0033 0.01910.0034 0.01750.0012 0.0054 * 0.0021 0.00830.00180.0116 *0.00180.0000 *0.00180.0000 *0.00180.0061 *0.00270.0088 * 0.0024 0.0000 *0.2364 2.07800.3503 1.94100.5306 3.02500.4702 2.43200.5259 2.89500.6634 2.66200.0054 0.0000 * 0.3026 1.67700.2089 1.19100.0427 0.22090.009 0.0000 * 0.0099 0.03970.00090.0000 *0.00090.0000 *0.00090.0030 *0.00090.0017 *0.00120.0039 * 0.0012 0.0004 *0.00480.0000 *0.00540.0000 *0.00690.0000 *0.00570.0000 * 0.009 0.0000 * 0.0126 0.0000 *0.2857 2.51100.0864 0.47860.2668 1.52100.157 0.81190.176 0.96910.0886 0.35560.0015 0.0000 * 0.0012 0.0000 * 0.0015 0.0000 * 0.0012 0.0000 * 0.0015 0.0000 * 0.0012 0.0000 *0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 *0.0018 0.0000 * 0.0018 0.0000 * 0.0018 0.0000 * 0.0018 0.0017 * 0.0027 0.0000 * 0.0027 0.0000 *0.3227 2.83700.3816 2.11500.5047 2.87700.4271 2.20900.4703 2.58900.7067 2.83600.0045 0.0000 * 0.0054 0.0037 * 0.0054 0.0000 * 0.0051 0.0000 * 0.0081 0.0000 * 0.0084 0.0000 *0.0721 0.63370.0089 0.04930.0261 0.14900.0349 0.18070.0718 0.39550.01 0.04010.0195 0.0799 * 0.112 0.62060.0926 0.52800.0594 0.2781 * 0.0552 0.2239 * 0.1582 0.63510.0032 0.02810.0075 0.04150.0079 0.04480.0071 0.03650.0066 0.03630.0118 0.04720.0021 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 *0.0078 0.06870.0027 0.0112 * 0.0034 0.01960.0049 0.02530.0024 0.01320.0021 0.0026 *0.0021 0.0050 * 0.0021 0.0089 * 0.0024 0.0113 * 0.0021 0.0058 * 0.0021 0.0060 * 0.0021 0.0000 *0.0018 0.0021 * 0.0018 0.0005 * 0.0018 0.0000 * 0.0018 0.0000 * 0.0024 0.0000 * 0.0024 0.0042 *0.0039 0.0248 * 0.0039 0.0000 * 0.0039 0.0000 * 0.0045 0.0200 * 0.0051 0.0000 * 0.0054 0.0000 *0.1106 0.97230.2759 1.52900.2664 1.51800.3342 1.72900.248 1.36500.4264 1.71100.0009 0.0079 * 0.0009 0.0039 * 0.0016 0.00940.0016 0.00800.0014 0.00750.0015 0.00600.007 0.06170.0009 0.0023 * 0.0009 0.0056 * 0.0048 0.02460.0021 0.01170.0009 0.0011 *0.5222 4.59001.286 7.13001.451 8.27201.238 6.40301.252 6.89102.731 10.96000.0018 0.0058 * 0.0018 0.0000 * 0.0018 0.0000 * 0.0018 0.0000 * 0.0024 0.0000 * 0.0024 0.0002 *0.0444 0.0000 * 0.5867 3.25200.3071 1.75100.1752 0.8940 * 0.0561 0.1762 * 0.0582 0.0877 *0.0018 0.01610.0031 0.01720.006 0.03440.004 0.02050.0034 0.01890.0038 0.01530.7915 6.95800.7985 4.42600.5363 3.05700.7929 4.10100.8296 4.56700.4835 1.94100.0041 0.03600.0027 0.0057 * 0.0027 0.0140 * 0.0042 0.02170.0033 0.0008 * 0.0033 0.0000 *0.0266 0.23350.0341 0.18920.039 0.22250.0339 0.17510.0631 0.34760.0693 0.27800.0012 0.0000 * 0.0024 0.01360.0018 0.0008 * 0.0015 0.0080 * 0.0024 0.0000 * 0.0024 0.0034 *0.0015 0.0075 * 0.0015 0.0050 * 0.0015 0.0038 * 0.0015 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 *0.0412 0.36220.0051 0.02840.0178 0.10150.0211 0.10930.0326 0.17960.0088 0.03530.0018 0.0145 * 0.0018 0.0042 * 0.0018 0.0046 * 0.0018 0.0002 * 0.0017 0.00930.0026 0.0106Calm: 8.33%Calm: 18.75%Calm: 39.58%Calm: 20.83%7/24/083.6019432.111.6NANA7/30/083.9829431.76.7NA7/27/085.162988/2/084.6630033.47.931.810.3NA8/5/084.299431.08/8/085.1028030.214.3NA12.6NATABLE 2Air Filter Sampling Laboratory Values for Inorganic ParametersWinkelman Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsPM10μg/m3----1507/508--1507--Aluminumμg/m3------5.1----Antimonyμg/m313,0001.46--------Arsenicμg/m32,5000.000441 -- 0.00045 --0.19Bariumμg/m3------0.52----Bismuthμg/m3------------Bromineμg/m3------------Cadmiumμg/m32500.00105-- 0.0011 ----Calciumμg/m3------------Chlorineμg/m3------------Chromiumμg/m31000.000158 -- 0.00016 ----Cobaltμg/m310,000 0.000686 -- 0.00069 ----Copperμg/m3----------100Galliumμg/m3------------Germaniumμg/m3------------Indiumμg/m3------------Ironμg/m3------------Lanthanumμg/m3------------Leadμg/m3----1.59 10--1.59 10--Magnesiumμg/m3------------Manganeseμg/m32,5000.0521--0.051----Mercuryμg/m31,0000.313--0.31--1.8Molybdenumμg/m3------------Nickelμg/m35,0000.0079--0.008--6Palladiumμg/m3------------Phosphorusμg/m3------------Potassiumμg/m3------------Rubidiumμg/m3------------Seleniumμg/m350018.3--------Siliconμg/m3------------Silverμg/m3------------Sodiumμg/m3------------Strontiumμg/m3------------Sulfurμg/m3------------Tinμg/m3------------Titaniumμg/m3------31----Vanadiumμg/m3------------Yttriumμg/m3------------Zincμg/m3------------Zirconiumμg/m3------------Table Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations,Title 18 Chapter 2 Article 17,December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards,Title 18 Chapter 2 Article 2,December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals,Ambient Air,October 2004mph4EPA National Ambient Air QualityStandards,http://www.epa.gov/air/criteria.html,February20085California Acute Reference Exposure Levels,March 19996With the exception of arsenic,the averagingtime for all listed analytes is one hour. The averagingtime for arsenic is four hours.7The averagingtime for the criteria is 24 hours.8The averagingtime for the criteria is the annual arithmetic mean.9The averagingtime for the criteria is thequarterlyaverage.10Onlythe PM10 fraction is beingmeasured not the total suspendedparticulates.11Percent of Total Mass12Precipitation measurements are recorded manuallybya Hayden-Winkelman High School employee;reliabilitycannot be verified.13Bold values with bold outline indicate the result exceeds one or more of the comparison criteria.14Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteria.Calm: < 115* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.Wind direction16-- = Not establishedtoward center17°C = Degrees Celsius18% = Percent19J = Estimated value20mph = milesper hour21NA = Not Applicable or Not Analyzed22NPR = Noprecipitation recorded.23μg/m3= Microgramsper cubic meter24PM10=particulate matter with a diameter less than or equal to 10 microns in size25R = Rejected26This table should be consideredpreliminaryand will be revised based on incomingdata,final data validation and QA/QC.Precipitation (inches)3:Avg Ambient Temperature (oC):Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):Avg Wind Speed (mph):EPARegion IXPreliminaryRemediationGoal3Date:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)1EPANationalAmbientAir QualityStandards4CaliforniaAcuteReferenceExposureLevels5 6ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaAmbientAir QualityStandards2ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual21.24 NA 8.61 NA 14.71 NA 17.46 NA 16.38 NA 9.26 NA0.5287 2.77100.0961 1.22100.2171 1.62900.3788 2.40500.2523 1.70100.0756 0.90290.0168 0.08780.0133 0.16860.0113 0.08510.0055 0.03470.0027 0.0000 * 0.0027 0.0107 *0.00840.04420.00620.07890.01490.11160.00760.04840.00920.06220.0012 0.0000 *0.0094 0.04930.0048 0.0251 * 0.0048 0.0007 * 0.0057 0.0344 * 0.0036 0.0060 * 0.0024 0.0000 *NA NANA NA0.0166 0.12470.0099 0.0628NA NANA NA0.0023 0.01210.0009 0.0066 * 0.0011 0.00850.001 0.00630.0015 0.01020.0009 0.0000 *0.0024 0.0000 * 0.0024 0.0000 * 0.0024 0.0039 * 0.0024 0.0000 * 0.0018 0.0051 * 0.0018 0.0000 *0.5273 2.76300.1046 1.32800.1404 1.05300.3108 1.97400.2941 1.98300.1268 1.51500.014 0.07350.0066 0.0042 * 0.0081 0.0053 * 0.0095 0.06010.0855 0.57610.0036 0.0000 *0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0006 0.0000 * 0.0006 0.0000 *0.0105 0.0000 * 0.0042 0.0000 * 0.0054 0.0000 * 0.0066 0.0000 * 0.0036 0.0000 * 0.0024 0.0000 *0.2828 1.48200.1613 2.04800.1783 1.33700.1312 0.83320.0939 0.63290.0081 0.09670.0015 0.0000 * 0.0015 0.0000 * 0.0015 0.0000 * 0.0012 0.0000 * 0.0018 0.0000 * 0.0015 0.0000 *0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0039 *0.0027 0.0000 * 0.0027 0.0000 * 0.0027 0.0060 * 0.0027 0.0000 * 0.0021 0.0000 * 0.0018 0.0000 *0.5603 2.93600.1415 1.79700.2366 1.77400.3362 2.13500.222 1.49700.0569 0.67970.0084 0.0000 * 0.0051 0.0000 * 0.0048 0.0000 * 0.0057 0.0000 * 0.0039 0.0013 * 0.0018 0.0129 *0.0354 0.18550.0266 0.33780.053 0.39730.028 0.17790.0306 0.20630.003 0.0135 *0.062 0.32490.021 0.1004 * 0.0252 0.0099 * 0.0483 0.2302 * 0.0603 0.40660.0297 0.2232 *0.0067 0.03530.0017 0.02150.0025 0.01870.0047 0.02990.0038 0.02570.0009 0.0062 *0.0021 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 * 0.0027 0.0000 * 0.0024 0.0045 *0.0034 0.01800.0024 0.0066 * 0.0034 0.02580.0021 0.0126 * 0.003 0.0102 * 0.0027 0.0112 *0.0021 0.0020 * 0.0021 0.0155 * 0.0026 0.01940.0022 0.01380.0027 0.0127 * 0.0024 0.0129 *0.0024 0.0000 * 0.0024 0.0000 * 0.0024 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 *0.0051 0.0000 * 0.0039 0.0000 * 0.0045 0.0000 * 0.0045 0.0000 * 0.0033 0.0187 * 0.0033 0.03990.2783 1.45800.0807 1.02400.1385 1.03900.1972 1.25200.1616 1.09000.0459 0.54760.0009 0.0049 * 0.0009 0.0000 * 0.0009 0.0046 * 0.0009 0.0042 * 0.0012 0.0041 * 0.0012 0.0073 *0.0014 0.00740.0025 0.03170.0036 0.02680.0022 0.01410.0022 0.01460.0009 0.0079 *1.404 7.35500.2751 3.49300.678 5.08501.029 6.53500.6813 4.59300.2087 2.49200.0024 0.0000 * 0.0024 0.0000 * 0.0024 0.0000 * 0.0024 0.0000 * 0.0021 0.0000 * 0.0018 0.0000 *0.2688 1.40900.0396 0.0132 * 0.1191 0.8870 * 0.1125 0.4374 * 0.2223 1.49900.0876 0.3784 *0.0046 0.02420.0009 0.0066 * 0.0009 0.0064 * 0.0024 0.01490.0021 0.01400.0016 0.01860.8103 4.24600.3603 4.57500.7091 5.31800.6384 4.05400.6375 4.29800.4488 5.35900.0036 0.0047 * 0.0033 0.0078 * 0.0036 0.0148 * 0.0033 0.0012 * 0.0027 0.0044 * 0.0024 0.0000 *0.0665 0.34860.0179 0.22720.0148 0.11090.031 0.19700.025 0.16850.0059 0.07030.0024 0.0101 * 0.0012 0.0036 * 0.0012 0.0000 * 0.0015 0.0030 * 0.0012 0.0000 * 0.0006 0.0000 *0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0018 0.0000 * 0.0018 0.0000 *0.0218 0.11420.0131 0.16680.0294 0.22040.0152 0.09630.0172 0.11620.0027 0.0214 *0.0019 0.01010.0015 0.0042 * 0.0015 0.0042 * 0.0015 0.0057 * 0.0021 0.0029 * 0.0021 0.0000 *7.8NA20.9NA8/11/084.478/14/084.1016828.430733.08/17/084.7230830.710.3NA8/20/082.8025431.29.1NA9.5NA13.2NA8/23/083.488/29/084.609830.622531.0TABLE 2Air Filter Sampling Laboratory Values for Inorganic ParametersWinkelman Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsPM10μg/m3----1507/508--1507--Aluminumμg/m3------5.1----Antimonyμg/m313,0001.46--------Arsenicμg/m32,5000.000441 -- 0.00045 --0.19Bariumμg/m3------0.52----Bismuthμg/m3------------Bromineμg/m3------------Cadmiumμg/m32500.00105-- 0.0011 ----Calciumμg/m3------------Chlorineμg/m3------------Chromiumμg/m31000.000158 -- 0.00016 ----Cobaltμg/m310,000 0.000686 -- 0.00069 ----Copperμg/m3----------100Galliumμg/m3------------Germaniumμg/m3------------Indiumμg/m3------------Ironμg/m3------------Lanthanumμg/m3------------Leadμg/m3----1.59 10--1.59 10--Magnesiumμg/m3------------Manganeseμg/m32,5000.0521--0.051----Mercuryμg/m31,0000.313--0.31--1.8Molybdenumμg/m3------------Nickelμg/m35,0000.0079--0.008--6Palladiumμg/m3------------Phosphorusμg/m3------------Potassiumμg/m3------------Rubidiumμg/m3------------Seleniumμg/m350018.3--------Siliconμg/m3------------Silverμg/m3------------Sodiumμg/m3------------Strontiumμg/m3------------Sulfurμg/m3------------Tinμg/m3------------Titaniumμg/m3------31----Vanadiumμg/m3------------Yttriumμg/m3------------Zincμg/m3------------Zirconiumμg/m3------------Table Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations,Title 18 Chapter 2 Article 17,December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards,Title 18 Chapter 2 Article 2,December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals,Ambient Air,October 2004mph4EPA National Ambient Air QualityStandards,http://www.epa.gov/air/criteria.html,February20085California Acute Reference Exposure Levels,March 19996With the exception of arsenic,the averagingtime for all listed analytes is one hour. The averagingtime for arsenic is four hours.7The averagingtime for the criteria is 24 hours.8The averagingtime for the criteria is the annual arithmetic mean.9The averagingtime for the criteria is thequarterlyaverage.10Onlythe PM10 fraction is beingmeasured not the total suspendedparticulates.11Percent of Total Mass12Precipitation measurements are recorded manuallybya Hayden-Winkelman High School employee;reliabilitycannot be verified.13Bold values with bold outline indicate the result exceeds one or more of the comparison criteria.14Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteria.Calm: < 115* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.Wind direction16-- = Not establishedtoward center17°C = Degrees Celsius18% = Percent19J = Estimated value20mph = milesper hour21NA = Not Applicable or Not Analyzed22NPR = Noprecipitation recorded.23μg/m3= Microgramsper cubic meter24PM10=particulate matter with a diameter less than or equal to 10 microns in size25R = Rejected26This table should be consideredpreliminaryand will be revised based on incomingdata,final data validation and QA/QC.Precipitation (inches)3:Avg Ambient Temperature (oC):Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):Avg Wind Speed (mph):EPARegion IXPreliminaryRemediationGoal3Date:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)1EPANationalAmbientAir QualityStandards4CaliforniaAcuteReferenceExposureLevels5 6ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaAmbientAir QualityStandards2ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual9.2 NA 16.02 NA 10.13 NA 35.42 NA 11.63 NA 10.43 NA0.0644 0.76470.3445 2.36900.2043 2.22901.523 4.66700.3077 2.88500.1721 1.81200.0027 0.0062 * 0.0033 0.0000 * 0.003 0.0000 * 0.0033 0.0004 * 0.003 0.0000 * 0.003 0.0139 *0.00820.09730.00990.06800.00270.0288 *0.0030.0069 *0.00430.04020.00330.0213 *0.0024 0.0000 * 0.0045 0.0000 * 0.003 0.0000 * 0.0078 0.0114 * 0.0036 0.0084 * 0.003 0.0059 *NA NANA NANA NANA NANA NANA NA0.0009 0.0022 * 0.0021 0.01460.0012 0.0128 * 0.0017 0.00520.0012 0.0106 * 0.002 0.02130.0018 0.0000 * 0.0021 0.0065 * 0.0021 0.0087 * 0.0021 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 *0.0583 0.69310.3074 2.11400.1848 2.01701.045 3.20200.3033 2.84300.2447 2.57600.0039 0.0056 * 0.0051 0.0330 * 0.0042 0.0000 * 0.0051 0.0141 * 0.0039 0.0000 * 0.0039 0.0000 *0.0006 0.0000 *0.00090.0029 * 0.0009 0.0000 *0.00090.0020 * 0.0009 0.0000 * 0.0009 0.0000 *0.0024 0.0000 * 0.0051 0.0000 * 0.0033 0.0000 * 0.0117 0.0000 * 0.0045 0.0000 * 0.003 0.0000 *0.035 0.41620.1201 0.82560.0319 0.34770.0676 0.20710.0786 0.73670.0446 0.46930.0015 0.0000 * 0.0021 0.0000 * 0.0018 0.0000 * 0.0021 0.0000 * 0.0018 0.0000 * 0.0018 0.0000 *0.0012 0.0000 * 0.0015 0.0000 * 0.0015 0.0000 * 0.0015 0.0019 * 0.0012 0.0000 * 0.0012 0.0010 *0.0018 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 * 0.0024 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 *0.0742 0.88110.335 2.30400.1482 1.61600.8687 2.66300.2581 2.42000.1379 1.45100.0021 0.0117 * 0.0048 0.0042 * 0.0033 0.0154 * 0.0084 0.0000 * 0.0039 0.0000 * 0.003 0.0154 *0.0153 0.18240.0163 0.11200.0067 0.07340.0082 0.02530.0189 0.17700.0141 0.14870.0318 0.2747 * 0.0636 0.43740.0428 0.46640.309 0.94700.0634 0.59410.0357 0.2344 *0.0013 0.01510.004 0.02720.0023 0.02520.0227 0.06970.0044 0.04150.0022 0.02330.0024 0.0000 * 0.003 0.0000 * 0.0027 0.0010 * 0.003 0.0032 * 0.0027 0.0000 * 0.003 0.0164 *0.003 0.0207 * 0.0036 0.0155 * 0.0033 0.0000 * 0.0036 0.0000 * 0.0033 0.0040 * 0.0033 0.0000 *0.0024 0.0034 * 0.0033 0.0133 * 0.003 0.0170 * 0.003 0.0001 * 0.0027 0.0049 * 0.0027 0.0114 *0.0021 0.0000 * 0.0024 0.0062 * 0.0024 0.0000 * 0.0024 0.0000 * 0.0024 0.0071 * 0.0024 0.0000 *0.0049 0.05820.0036 0.0217 * 0.0027 0.0077 * 0.0067 0.02050.003 0.0000 * 0.0027 0.0000 *0.057 0.67740.164 1.12800.0958 1.04500.5542 1.69900.1346 1.26200.0859 0.90450.0012 0.0022 * 0.0015 0.0000 * 0.0015 0.0036 * 0.003 0.00920.0015 0.0057 * 0.0015 0.0089 *0.0012 0.0101 * 0.0012 0.0071 * 0.0012 0.0046 * 0.0015 0.0010 * 0.0012 0.0000 * 0.0012 0.0055 *0.2029 2.41001.066 7.33000.5363 5.85003.8 11.65000.8588 8.05100.5038 5.30300.0018 0.0000 * 0.0021 0.0000 * 0.0021 0.0005 * 0.0024 0.0025 * 0.0021 0.0115 * 0.0021 0.0208 *0.0936 0.5359 * 0.0411 0.1415 * 0.0345 0.1762 * 0.1554 0.2230 * 0.036 0.1086 * 0.0339 0.1854 *0.0015 0.0067 * 0.0027 0.01850.0018 0.0118 * 0.0063 0.01920.0015 0.0106 * 0.0016 0.01730.5217 6.19800.7095 4.87900.5306 5.78900.3935 1.20600.5584 5.23500.5273 5.55100.0024 0.0000 * 0.003 0.0130 * 0.0027 0.0010 * 0.0033 0.0081 * 0.003 0.0243 * 0.0036 0.03770.0071 0.08390.0353 0.24280.0151 0.16440.0814 0.24940.024 0.22470.0128 0.13480.0006 0.0000 * 0.0015 0.0000 * 0.0009 0.0000 * 0.003 0.0039 * 0.0012 0.0000 * 0.0009 0.0064 *0.0018 0.0000 * 0.0021 0.0084 * 0.0021 0.0092 * 0.0021 0.0023 * 0.0021 0.0031 * 0.0021 0.0035 *0.0106 0.12590.0114 0.07870.0056 0.06160.0102 0.03130.0141 0.13240.0122 0.12840.0021 0.0067 * 0.0027 0.0091 * 0.0024 0.0000 * 0.0029 0.00880.0024 0.0071 * 0.0024 0.0000 *Calm: 27.27%Calm: 4.17%Calm: 8.33%9/1/082.6124927.46.5NA9/4/082.6120829.923.2NA11.1NA17.8NA9/7/083.609/12/083.3627425.412030.29/18/083.1121827.99/24/084.3511930.27.4NA6.0NATABLE 2Air Filter Sampling Laboratory Values for Inorganic ParametersWinkelman Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsPM10μg/m3----1507/508--1507--Aluminumμg/m3------5.1----Antimonyμg/m313,0001.46--------Arsenicμg/m32,5000.000441 -- 0.00045 --0.19Bariumμg/m3------0.52----Bismuthμg/m3------------Bromineμg/m3------------Cadmiumμg/m32500.00105-- 0.0011 ----Calciumμg/m3------------Chlorineμg/m3------------Chromiumμg/m31000.000158 -- 0.00016 ----Cobaltμg/m310,000 0.000686 -- 0.00069 ----Copperμg/m3----------100Galliumμg/m3------------Germaniumμg/m3------------Indiumμg/m3------------Ironμg/m3------------Lanthanumμg/m3------------Leadμg/m3----1.59 10--1.59 10--Magnesiumμg/m3------------Manganeseμg/m32,5000.0521--0.051----Mercuryμg/m31,0000.313--0.31--1.8Molybdenumμg/m3------------Nickelμg/m35,0000.0079--0.008--6Palladiumμg/m3------------Phosphorusμg/m3------------Potassiumμg/m3------------Rubidiumμg/m3------------Seleniumμg/m350018.3--------Siliconμg/m3------------Silverμg/m3------------Sodiumμg/m3------------Strontiumμg/m3------------Sulfurμg/m3------------Tinμg/m3------------Titaniumμg/m3------31----Vanadiumμg/m3------------Yttriumμg/m3------------Zincμg/m3------------Zirconiumμg/m3------------Table Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations,Title 18 Chapter 2 Article 17,December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards,Title 18 Chapter 2 Article 2,December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals,Ambient Air,October 2004mph4EPA National Ambient Air QualityStandards,http://www.epa.gov/air/criteria.html,February20085California Acute Reference Exposure Levels,March 19996With the exception of arsenic,the averagingtime for all listed analytes is one hour. The averagingtime for arsenic is four hours.7The averagingtime for the criteria is 24 hours.8The averagingtime for the criteria is the annual arithmetic mean.9The averagingtime for the criteria is thequarterlyaverage.10Onlythe PM10 fraction is beingmeasured not the total suspendedparticulates.11Percent of Total Mass12Precipitation measurements are recorded manuallybya Hayden-Winkelman High School employee;reliabilitycannot be verified.13Bold values with bold outline indicate the result exceeds one or more of the comparison criteria.14Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteria.Calm: < 115* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.Wind direction16-- = Not establishedtoward center17°C = Degrees Celsius18% = Percent19J = Estimated value20mph = milesper hour21NA = Not Applicable or Not Analyzed22NPR = Noprecipitation recorded.23μg/m3= Microgramsper cubic meter24PM10=particulate matter with a diameter less than or equal to 10 microns in size25R = Rejected26This table should be consideredpreliminaryand will be revised based on incomingdata,final data validation and QA/QC.Precipitation (inches)3:Avg Ambient Temperature (oC):Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):Avg Wind Speed (mph):EPARegion IXPreliminaryRemediationGoal3Date:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)1EPANationalAmbientAir QualityStandards4CaliforniaAcuteReferenceExposureLevels5 6ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaAmbientAir QualityStandards2ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual19.94 NA 17.35 NA R NA 9.58 NA 12.96 NA 17.79 NA0.1862 1.02200.6427 3.9650RR0.2114 2.37100.3808 3.16200.3842 2.29900.003 0.0000 * 0.0033 0.0000 *RR0.0033 0.0148 * 0.0033 0.0000 * 0.003 0.0006 *0.0012 0.0000 *0.01370.0848RR0.0033 0.0042 *0.00510.0332 *0.00560.03330.0033 0.0044 * 0.0048 0.0032 *RR0.0033 0.0042 * 0.0042 0.0027 * 0.0042 0.0048 *NA NANA NARRNA NANA NANA NA0.0024 0.01320.0016 0.0099RR0.0018 0.02010.0016 0.01370.0024 0.01470.0021 0.0016 * 0.0021 0.0029 *RR0.0021 0.0095 * 0.0021 0.0070 * 0.0021 0.0003 *0.4447 2.44200.5787 3.5700RR0.3143 3.52500.3289 2.73100.5099 3.05200.0063 0.0000 * 0.011 0.0680RR0.0042 0.0433 * 0.0163 0.13530.0166 0.09950.0009 0.0000 *0.00090.0032 *RR0.0009 0.0000 * 0.0009 0.0000 * 0.0009 0.0000 *0.0033 0.0000 * 0.0057 0.0000 *RR0.0033 0.0000 * 0.0048 0.0000 * 0.0045 0.0000 *0.0153 0.08430.0463 0.2856RR0.0248 0.27770.0736 0.61110.0703 0.42100.0018 0.0000 * 0.0021 0.0003 *RR0.0018 0.0011 * 0.0021 0.0000 * 0.0018 0.0003 *0.0012 0.0008 * 0.0015 0.0000 *RR0.0015 0.0000 * 0.0015 0.0004 * 0.0012 0.0000 *0.0021 0.0000 * 0.0021 0.0000 *RR0.0021 0.0000 * 0.0024 0.0027 * 0.0021 0.0000 *0.1581 0.86810.3927 2.4230RR0.1579 1.77100.2922 2.42600.2927 1.75200.0036 0.0010 * 0.0051 0.0000 *RR0.0033 0.0074 * 0.0048 0.0000 * 0.0048 0.0000 *0.0033 0.0114 * 0.0201 0.1237RR0.0124 0.13940.0247 0.20530.01 0.06000.0426 0.1895 * 0.1218 0.7515RR0.0378 0.3860 * 0.0679 0.56380.0827 0.49480.0033 0.01810.0052 0.0322RR0.0024 0.02750.004 0.03360.0064 0.03800.0027 0.0052 * 0.003 0.0000 *RR0.003 0.0021 * 0.003 0.0000 * 0.0027 0.0000 *0.003 0.0026 * 0.0036 0.0102 *RR0.0033 0.0000 * 0.0036 0.0129 * 0.0033 0.0000 *0.0027 0.0054 * 0.0033 0.0128 *RR0.003 0.0222 * 0.003 0.0121 * 0.0027 0.0000 *0.0021 0.0034 * 0.0024 0.0000 *RR0.0024 0.0000 * 0.0024 0.0000 * 0.0024 0.0000 *0.0039 0.0000 * 0.0033 0.0105 *RR0.0027 0.0063 * 0.003 0.0000 * 0.0027 0.0011 *0.124 0.68080.2235 1.3790RR0.0964 1.08100.261 2.16800.1741 1.04200.0012 0.0041 * 0.0015 0.0055 *RR0.0015 0.0069 * 0.0015 0.0078 * 0.0015 0.0042 *0.0012 0.0039 * 0.0015 0.0058 *RR0.0012 0.0000 * 0.0012 0.0039 * 0.0012 0.0017 *0.6121 3.36201.7 10.4900RR0.5989 6.71701.099 9.12601.093 6.54300.0021 0.0018 * 0.0024 0.0003 *RR0.0021 0.0127 * 0.0021 0.0000 * 0.0021 0.0006 *0.042 0.0864 * 0.1314 0.7044 *RR0.0351 0.1991 * 0.1104 0.3108 * 0.0372 0.0727 *0.0025 0.01370.0038 0.0235RR0.0031 0.03430.0018 0.0082 * 0.0028 0.01691.755 9.63700.4013 2.4760RR0.4282 4.80200.4116 3.41800.276 1.65200.003 0.01630.003 0.0171 *RR0.0027 0.0069 * 0.003 0.0133 * 0.003 0.0110 *0.0175 0.09590.037 0.2280RR0.0143 0.16050.0298 0.24750.0345 0.20630.0009 0.0000 * 0.0015 0.0000 *RR0.0009 0.0000 * 0.0015 0.0000 * 0.0015 0.0000 *0.0018 0.0072 * 0.0021 0.0000 *RR0.0021 0.0042 * 0.0024 0.0000 * 0.0021 0.0000 *0.0045 0.02460.0277 0.1711RR0.0097 0.10820.0107 0.08910.0101 0.06060.0024 0.0052 * 0.0027 0.0102 *RR0.0024 0.0026 * 0.0027 0.0145 * 0.0024 0.0025 *Calm: 0.00%Calm: 20.83%Calm: 25.00Calm: 0.00%Calm: 29.17%Calm: 4.17%5.7NA9.1NA9/30/087.2110/6/082.5511722.58330.210/13/082.9828314.36.6NA10/16/088.205824.87.7NA6.2NA6.7NA10/19/082.4210/22/0810.194821.727024.5TABLE 2Air Filter Sampling Laboratory Values for Inorganic ParametersWinkelman Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsPM10μg/m3----1507/508--1507--Aluminumμg/m3------5.1----Antimonyμg/m313,0001.46--------Arsenicμg/m32,5000.000441 -- 0.00045 --0.19Bariumμg/m3------0.52----Bismuthμg/m3------------Bromineμg/m3------------Cadmiumμg/m32500.00105-- 0.0011 ----Calciumμg/m3------------Chlorineμg/m3------------Chromiumμg/m31000.000158 -- 0.00016 ----Cobaltμg/m310,000 0.000686 -- 0.00069 ----Copperμg/m3----------100Galliumμg/m3------------Germaniumμg/m3------------Indiumμg/m3------------Ironμg/m3------------Lanthanumμg/m3------------Leadμg/m3----1.59 10--1.59 10--Magnesiumμg/m3------------Manganeseμg/m32,5000.0521--0.051----Mercuryμg/m31,0000.313--0.31--1.8Molybdenumμg/m3------------Nickelμg/m35,0000.0079--0.008--6Palladiumμg/m3------------Phosphorusμg/m3------------Potassiumμg/m3------------Rubidiumμg/m3------------Seleniumμg/m350018.3--------Siliconμg/m3------------Silverμg/m3------------Sodiumμg/m3------------Strontiumμg/m3------------Sulfurμg/m3------------Tinμg/m3------------Titaniumμg/m3------31----Vanadiumμg/m3------------Yttriumμg/m3------------Zincμg/m3------------Zirconiumμg/m3------------Table Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations,Title 18 Chapter 2 Article 17,December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards,Title 18 Chapter 2 Article 2,December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals,Ambient Air,October 2004mph4EPA National Ambient Air QualityStandards,http://www.epa.gov/air/criteria.html,February20085California Acute Reference Exposure Levels,March 19996With the exception of arsenic,the averagingtime for all listed analytes is one hour. The averagingtime for arsenic is four hours.7The averagingtime for the criteria is 24 hours.8The averagingtime for the criteria is the annual arithmetic mean.9The averagingtime for the criteria is thequarterlyaverage.10Onlythe PM10 fraction is beingmeasured not the total suspendedparticulates.11Percent of Total Mass12Precipitation measurements are recorded manuallybya Hayden-Winkelman High School employee;reliabilitycannot be verified.13Bold values with bold outline indicate the result exceeds one or more of the comparison criteria.14Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteria.Calm: < 115* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.Wind direction16-- = Not establishedtoward center17°C = Degrees Celsius18% = Percent19J = Estimated value20mph = milesper hour21NA = Not Applicable or Not Analyzed22NPR = Noprecipitation recorded.23μg/m3= Microgramsper cubic meter24PM10=particulate matter with a diameter less than or equal to 10 microns in size25R = Rejected26This table should be consideredpreliminaryand will be revised based on incomingdata,final data validation and QA/QC.Precipitation (inches)3:Avg Ambient Temperature (oC):Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):Avg Wind Speed (mph):EPARegion IXPreliminaryRemediationGoal3Date:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)1EPANationalAmbientAir QualityStandards4CaliforniaAcuteReferenceExposureLevels5 6ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaAmbientAir QualityStandards2ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual17.34 NA 19.02 NA 20.63 NA R NA 10.4 NA77.09NA0.4755 2.90400.4699 2.64700.581 2.9990RR0.3301 3.30103.379 4.58200.003 0.0023 * 0.003 0.0008 * 0.0033 0.0017 *RR0.003 0.0000 * 0.0056 0.00770.00980.06010.00240.0053 *0.01790.0926RR0.00730.07300.02720.03680.0045 0.0078 * 0.0042 0.0069 * 0.0054 0.0277RR0.0036 0.0000 * 0.0309 0.0419NA NANA NA0.0302 0.1558NA NANA NA0.0297 0.04020.0012 0.0060 * 0.0028 0.01570.0023 0.0117RR0.0012 0.0094 * 0.0021 0.00290.0021 0.0006 * 0.0021 0.0000 *0.00210.0097 *RR0.0021 0.0014 *0.00240.0018 *0.4038 2.46600.7872 4.43500.5706 2.9450RR0.3277 3.27702.114 2.86600.0048 0.0227 * 0.0058 0.03290.0057 0.0044 *RR0.0107 0.10740.1828 0.24790.0009 0.0000 *0.00090.0029 *0.00090.0036 *RR0.0009 0.0009 *0.00420.00570.0054 0.0000 * 0.0048 0.0000 * 0.0069 0.0000 *RR0.0045 0.0000 * 0.0279 0.0000 *0.1315 0.80310.0326 0.18380.3796 1.9590RR0.0891 0.89131.39 1.88500.0018 0.0000 * 0.0018 0.0000 * 0.0024 0.0000 *RR0.0018 0.0000 * 0.0024 0.0000 *0.0012 0.0000 * 0.0012 0.0000 * 0.0015 0.0000 *RR0.0012 0.0000 * 0.0015 0.0000 *0.0021 0.0003 * 0.0021 0.0000 * 0.0021 0.0000 *RR0.0021 0.0000 * 0.0024 0.0000 *0.3552 2.16900.349 1.96600.5452 2.8140RR0.2528 2.52802.776 3.76400.0048 0.0017 * 0.0048 0.0000 * 0.0051 0.0000 *RR0.0039 0.0000 * 0.0228 0.0000 *0.0382 0.23350.0041 0.02310.0848 0.4377RR0.0144 0.14410.0824 0.11170.0764 0.46640.0677 0.38140.0846 0.4364RR0.0588 0.58760.5306 0.71950.0058 0.03540.0097 0.05460.009 0.0467RR0.0048 0.04850.05240.07100.0027 0.0000 * 0.0024 0.0000 * 0.003 0.0000 *RR0.0027 0.0052 * 0.003 0.0000 *0.0033 0.0193 * 0.003 0.0000 * 0.0051 0.0265RR0.0033 0.0000 * 0.0102 0.01390.0027 0.0017 * 0.0027 0.0056 * 0.003 0.0066 *RR0.003 0.0198 * 0.0039 0.0039 *0.0021 0.0000 * 0.0021 0.0000 * 0.0024 0.0000 *RR0.0024 0.0066 * 0.0024 0.0000 *0.0033 0.0049 * 0.0039 0.0157 * 0.0039 0.0000 *RR0.0027 0.0000 * 0.0132 0.0170 *0.2156 1.31700.2181 1.22900.2561 1.3220RR0.1278 1.27801.386 1.87900.0015 0.0035 * 0.0012 0.0034 * 0.0018 0.0092RR0.0012 0.0038 * 0.009 0.01230.0012 0.0081 * 0.0012 0.0005 * 0.0015 0.0073 *RR0.0013 0.01270.0069 0.00941.298 7.92401.324 7.45601.495 7.7180RR0.8974 8.97408.376 11.36000.0021 0.0000 * 0.0021 0.0011 * 0.0021 0.0063 *RR0.0021 0.0061 * 0.003 0.00410.0399 0.1029 * 0.0429 0.0857 * 0.0459 0.0000 *RR0.0978 0.4619 * 0.2139 0.1624 *0.003 0.01840.0037 0.02100.0032 0.0165RR0.003 0.02970.0164 0.02230.7067 4.31600.9224 5.19601.09 5.6280RR0.2746 2.74600.7863 1.06600.003 0.0078 * 0.0027 0.0058 * 0.003 0.0085 *RR0.003 0.0212 * 0.0033 0.0046 *0.0338 0.20640.032 0.18040.0387 0.1995RR0.0244 0.24390.2423 0.32860.0015 0.0000 * 0.0015 0.0005 * 0.0015 0.0034 *RR0.0012 0.0000 * 0.0087 0.0107 *0.0021 0.0083 * 0.0018 0.0053 * 0.0021 0.0007 *RR0.0021 0.0047 * 0.0024 0.0016 *0.0223 0.13630.0072 0.04060.0719 0.3711RR0.0132 0.13230.0561 0.07610.0024 0.0124 * 0.003 0.01700.003 0.0156RR0.0024 0.0226 * 0.0081 0.0110Calm: 4.17%Calm: 0.00%Calm: 4.17%Calm: 25.00%Calm: 0.00%Calm: 0.00%10/25/083.0431520.16.3NA10/28/0811.065724.96.7NA6.1NA7.4NA10/31/082.4911/3/082.6723422.63123.411/6/085.41815.611/9/085.1023513.57.4NA14.2NATABLE 2Air Filter Sampling Laboratory Values for Inorganic ParametersWinkelman Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsPM10μg/m3----1507/508--1507--Aluminumμg/m3------5.1----Antimonyμg/m313,0001.46--------Arsenicμg/m32,5000.000441 -- 0.00045 --0.19Bariumμg/m3------0.52----Bismuthμg/m3------------Bromineμg/m3------------Cadmiumμg/m32500.00105-- 0.0011 ----Calciumμg/m3------------Chlorineμg/m3------------Chromiumμg/m31000.000158 -- 0.00016 ----Cobaltμg/m310,000 0.000686 -- 0.00069 ----Copperμg/m3----------100Galliumμg/m3------------Germaniumμg/m3------------Indiumμg/m3------------Ironμg/m3------------Lanthanumμg/m3------------Leadμg/m3----1.59 10--1.59 10--Magnesiumμg/m3------------Manganeseμg/m32,5000.0521--0.051----Mercuryμg/m31,0000.313--0.31--1.8Molybdenumμg/m3------------Nickelμg/m35,0000.0079--0.008--6Palladiumμg/m3------------Phosphorusμg/m3------------Potassiumμg/m3------------Rubidiumμg/m3------------Seleniumμg/m350018.3--------Siliconμg/m3------------Silverμg/m3------------Sodiumμg/m3------------Strontiumμg/m3------------Sulfurμg/m3------------Tinμg/m3------------Titaniumμg/m3------31----Vanadiumμg/m3------------Yttriumμg/m3------------Zincμg/m3------------Zirconiumμg/m3------------Table Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations,Title 18 Chapter 2 Article 17,December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards,Title 18 Chapter 2 Article 2,December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals,Ambient Air,October 2004mph4EPA National Ambient Air QualityStandards,http://www.epa.gov/air/criteria.html,February20085California Acute Reference Exposure Levels,March 19996With the exception of arsenic,the averagingtime for all listed analytes is one hour. The averagingtime for arsenic is four hours.7The averagingtime for the criteria is 24 hours.8The averagingtime for the criteria is the annual arithmetic mean.9The averagingtime for the criteria is thequarterlyaverage.10Onlythe PM10 fraction is beingmeasured not the total suspendedparticulates.11Percent of Total Mass12Precipitation measurements are recorded manuallybya Hayden-Winkelman High School employee;reliabilitycannot be verified.13Bold values with bold outline indicate the result exceeds one or more of the comparison criteria.14Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteria.Calm: < 115* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.Wind direction16-- = Not establishedtoward center17°C = Degrees Celsius18% = Percent19J = Estimated value20mph = milesper hour21NA = Not Applicable or Not Analyzed22NPR = Noprecipitation recorded.23μg/m3= Microgramsper cubic meter24PM10=particulate matter with a diameter less than or equal to 10 microns in size25R = Rejected26This table should be consideredpreliminaryand will be revised based on incomingdata,final data validation and QA/QC.Precipitation (inches)3:Avg Ambient Temperature (oC):Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):Avg Wind Speed (mph):EPARegion IXPreliminaryRemediationGoal3Date:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)1EPANationalAmbientAir QualityStandards4CaliforniaAcuteReferenceExposureLevels5 6ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaAmbientAir QualityStandards2ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual16.87 NA R NA 13.77 NA 43.55 NA 16.64 NA 7.43 NA0.4765 2.9320RR0.45 3.43901.413 3.38800.5829 3.66200.1126 1.57100.003 0.0003 *RR0.003 0.0000 * 0.0105 0.02530.0069 0.0284 * 0.0063 0.0624 *0.01230.0756RR0.00120.0050 *0.00180.0034 *0.00350.02220.00790.10970.0045 0.0133 *RR0.0039 0.0000 * 0.0111 0.0227 * 0.0057 0.0180 * 0.0039 0.0158 *NA NANA NANA NANA NANA NANA NA0.0021 0.0127RR0.0012 0.0086 * 0.0024 0.00590.0026 0.01630.0006 0.0072 *0.00210.0122 *RR0.0021 0.0000 * 0.0024 0.0000 * 0.0024 0.0000 * 0.0024 0.0000 *0.4265 2.6250RR0.6705 5.12502.456 5.88900.7952 4.99600.1595 2.22600.0049 0.0301RR0.0145 0.11120.0197 0.04730.0075 0.04730.0177 0.24640.00090.0029 *RR0.00090.0014 *0.00150.0014 * 0.0012 0.0000 * 0.0009 0.0000 *0.006 0.0038 *RR0.0048 0.0000 *0.01230.0046 *0.00540.0089 * 0.0036 0.0000 *0.2268 1.3950RR0.0155 0.11840.0644 0.15430.0361 0.22660.0756 1.05500.0021 0.0000 *RR0.0018 0.0004 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 *0.0015 0.0000 *RR0.0012 0.0018 * 0.0012 0.0009 * 0.0012 0.0000 * 0.0009 0.0000 *0.0021 0.0000 *RR0.0021 0.0000 * 0.0027 0.0000 * 0.0027 0.0000 * 0.0024 0.0000 *0.4047 2.4910RR0.2609 1.99400.9148 2.19300.3614 2.27100.2004 2.79700.0048 0.0000 *RR0.0042 0.0000 * 0.0111 0.0000 * 0.006 0.0000 * 0.0042 0.0000 *0.0263 0.1617RR0.0033 0.0000 * 0.003 0.00720.0066 0.04170.0314 0.43820.0735 0.4523RR0.0558 0.42680.0864 0.1426 * 0.0318 0.1384 * 0.0204 0.0000 *0.0077 0.0472RR0.0051 0.03890.0171 0.04110.0057 0.03610.0012 0.0112 *0.003 0.0000 *RR0.0027 0.0000 * 0.0021 0.0009 * 0.0021 0.0000 * 0.0021 0.0000 *0.0036 0.0151 *RR0.003 0.0000 * 0.0024 0.0021 * 0.0024 0.0000 * 0.0034 0.04730.003 0.0084 *RR0.0027 0.0086 * 0.0021 0.0023 * 0.0021 0.0000 * 0.0018 0.0000 *0.0024 0.0012 *RR0.0021 0.0000 * 0.0024 0.0000 * 0.0024 0.0000 * 0.0021 0.0000 *0.003 0.0075 *RR0.003 0.0202 * 0.0072 0.0000 * 0.0048 0.0000 * 0.0036 0.0000 *0.1998 1.2290RR0.1981 1.51400.6601 1.58300.2486 1.56200.0903 1.26000.0017 0.0104RR0.0015 0.0101 * 0.003 0.00720.0011 0.00680.0009 0.0033 *0.0012 0.0072 *RR0.0012 0.0007 * 0.0009 0.0016 * 0.0009 0.0047 * 0.0057 0.08021.264 7.7800RR1.21 9.24903.879 9.30001.493 9.38300.309 4.31200.0021 0.0023 *RR0.0021 0.0061 * 0.0024 0.0000 * 0.0024 0.0000 * 0.0021 0.0000 *0.1185 0.3448 *RR0.0351 0.0396 * 0.0717 0.0000 * 0.0483 0.0985 * 0.0888 0.6465 *0.0041 0.0255RR0.0044 0.03380.0113 0.02710.0029 0.01800.0009 0.0099 *0.4262 2.6230RR0.1377 1.05300.63 1.51000.4367 2.74400.293 4.08900.003 0.0113 *RR0.003 0.0122 * 0.0036 0.0028 * 0.0033 0.0089 * 0.0033 0.0118 *0.034 0.2095RR0.0266 0.20370.0969 0.23240.0321 0.20140.0143 0.19970.0015 0.0000 *RR0.0012 0.0000 * 0.0033 0.0009 * 0.0015 0.0012 * 0.0009 0.0000 *0.0021 0.0046 *RR0.0018 0.0000 * 0.0012 0.0025 * 0.0012 0.0024 * 0.0012 0.0000 *0.0219 0.1350RR0.0028 0.02160.0109 0.02620.0088 0.05500.0225 0.31340.0024 0.0078 *RR0.0024 0.0086 * 0.0045 0.01070.0015 0.0083 * 0.0015 0.0131 *Calm: 16.67%Calm: 0.00%Calm: 0.00%Calm: 0.00%Calm: 4.17%Calm: 4.17%11.6NA6.8NA11/12/082.9211/15/0811.439320.129314.411/18/088.7610220.07.3NA11/21/0816.907916.96.9NA7.3NA40.3NA11/24/087.3911/27/083.235213.76717.3TABLE 2Air Filter Sampling Laboratory Values for Inorganic ParametersWinkelman Monitoring StationData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteParameterUnitsPM10μg/m3----1507/508--1507--Aluminumμg/m3------5.1----Antimonyμg/m313,0001.46--------Arsenicμg/m32,5000.000441 -- 0.00045 --0.19Bariumμg/m3------0.52----Bismuthμg/m3------------Bromineμg/m3------------Cadmiumμg/m32500.00105-- 0.0011 ----Calciumμg/m3------------Chlorineμg/m3------------Chromiumμg/m31000.000158 -- 0.00016 ----Cobaltμg/m310,000 0.000686 -- 0.00069 ----Copperμg/m3----------100Galliumμg/m3------------Germaniumμg/m3------------Indiumμg/m3------------Ironμg/m3------------Lanthanumμg/m3------------Leadμg/m3----1.59 10--1.59 10--Magnesiumμg/m3------------Manganeseμg/m32,5000.0521--0.051----Mercuryμg/m31,0000.313--0.31--1.8Molybdenumμg/m3------------Nickelμg/m35,0000.0079--0.008--6Palladiumμg/m3------------Phosphorusμg/m3------------Potassiumμg/m3------------Rubidiumμg/m3------------Seleniumμg/m350018.3--------Siliconμg/m3------------Silverμg/m3------------Sodiumμg/m3------------Strontiumμg/m3------------Sulfurμg/m3------------Tinμg/m3------------Titaniumμg/m3------31----Vanadiumμg/m3------------Yttriumμg/m3------------Zincμg/m3------------Zirconiumμg/m3------------Table Notes:1Arizona Department of Environmental QualityAcute and Chronic Ambient Air Concentrations,Title 18 Chapter 2 Article 17,December 20072Arizona Department of Environmental QualityAmbient Air QualityStandards,Title 18 Chapter 2 Article 2,December 2007Wind Speed:3EPA Region IX PreliminaryRemediation Goals,Ambient Air,October 2004mph4EPA National Ambient Air QualityStandards,http://www.epa.gov/air/criteria.html,February20085California Acute Reference Exposure Levels,March 19996With the exception of arsenic,the averagingtime for all listed analytes is one hour. The averagingtime for arsenic is four hours.7The averagingtime for the criteria is 24 hours.8The averagingtime for the criteria is the annual arithmetic mean.9The averagingtime for the criteria is thequarterlyaverage.10Onlythe PM10 fraction is beingmeasured not the total suspendedparticulates.11Percent of Total Mass12Precipitation measurements are recorded manuallybya Hayden-Winkelman High School employee;reliabilitycannot be verified.13Bold values with bold outline indicate the result exceeds one or more of the comparison criteria.14Bold italicized values indicate the non-detected result exceeds one or more of the comparison criteria.Calm: < 115* = The result is less than three times the level of uncertaintywhich is shown inplace of the result.Wind direction16-- = Not establishedtoward center17°C = Degrees Celsius18% = Percent19J = Estimated value20mph = milesper hour21NA = Not Applicable or Not Analyzed22NPR = Noprecipitation recorded.23μg/m3= Microgramsper cubic meter24PM10=particulate matter with a diameter less than or equal to 10 microns in size25R = Rejected26This table should be consideredpreliminaryand will be revised based on incomingdata,final data validation and QA/QC.Precipitation (inches)3:Avg Ambient Temperature (oC):Avg Ambient Relative Humidity (%):Avg Wind Direction (degrees):Avg Wind Speed (mph):EPARegion IXPreliminaryRemediationGoal3Date:ArizonaHazardous AirPollutantsAmbient AirConcentrations(Chronic)1EPANationalAmbientAir QualityStandards4CaliforniaAcuteReferenceExposureLevels5 6ArizonaHazardous AirPollutantsAmbient AirConcentrations(Acute)1ArizonaAmbientAir QualityStandards2ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual ResultPercent11Qual12.91 NA 12.2 NA 9.43 NA 12.7 NA0.1681 1.34500.2686 2.27800.16 1.73800.3364 2.73700.01 0.07990.0066 0.0467 * 0.0083 0.09050.0078 0.06360.03390.27120.00820.06990.01040.11300.010.08120.0048 0.0094 * 0.0048 0.0367 * 0.0042 0.0082 * 0.0051 0.0215 *0.0281 0.22450.0134 0.1134NA NANA NA0.0017 0.01390.0009 0.0060 * 0.0009 0.0092 * 0.0012 0.00960.00270.0121 * 0.0024 0.0080 * 0.0024 0.0031 * 0.0024 0.0000 *0.1773 1.41800.5217 4.42400.2266 2.46000.3789 3.08200.0075 0.0000 * 0.0548 0.46480.0066 0.0424 * 0.0311 0.25320.0012 0.0000 *0.00090.0028 * 0.0012 0.0000 *0.00150.01230.00480.0128 * 0.0042 0.0000 *0.00360.0087 *0.0060.0054 *0.2678 2.14200.1416 1.20100.142 1.54300.176 1.43100.0015 0.0000 * 0.0012 0.0000 * 0.0015 0.0000 * 0.0015 0.0000 *0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 *0.0027 0.0000 * 0.0027 0.0000 * 0.0027 0.0000 * 0.0027 0.0000 *0.2719 2.17500.2633 2.23300.177 1.92300.3858 3.13900.0048 0.0000 * 0.0048 0.0000 * 0.0042 0.0000 * 0.0054 0.0000 *0.0647 0.51790.0377 0.31980.0266 0.28940.0285 0.23170.0258 0.0000 * 0.048 0.3186 * 0.0234 0.0000 * 0.0285 0.1666 *0.0019 0.01540.0029 0.02440.0024 0.02560.0035 0.02830.0021 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 *0.0029 0.02340.0024 0.02040.0024 0.0189 * 0.0039 0.03140.0021 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 * 0.0021 0.0011 *0.0021 0.0019 * 0.0021 0.0000 * 0.0021 0.0000 * 0.0021 0.0000 *0.0045 0.0000 * 0.0042 0.0000 * 0.0039 0.0000 * 0.0042 0.0000 *0.1324 1.05900.1765 1.49700.0927 1.00700.1749 1.42300.0014 0.01090.0009 0.0064 * 0.0009 0.0000 * 0.0009 0.0011 *0.0107 0.08550.0024 0.02080.0019 0.02100.0084 0.06820.5132 4.10600.8409 7.13100.492 5.34300.9963 8.10500.0024 0.0004 * 0.0024 0.0068 * 0.0024 0.0000 * 0.0024 0.0000 *0.0489 0.0000 * 0.1314 1.11400.0972 0.4244 * 0.108 0.5516 *0.0009 0.0053 * 0.0043 0.03670.0022 0.02400.0028 0.02300.7646 6.11700.3659 3.10300.4382 4.75800.2926 2.38000.0033 0.0023 * 0.0033 0.0168 * 0.0033 0.0179 * 0.0033 0.0073 *0.0167 0.13330.019 0.16090.0129 0.14010.0277 0.22560.0012 0.0000 * 0.0012 0.0000 * 0.0009 0.0000 * 0.0015 0.0034 *0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 * 0.0012 0.0000 *0.036 0.28780.0226 0.19130.0156 0.16920.0186 0.15170.0015 0.0038 * 0.0015 0.0028 * 0.0015 0.0000 * 0.0015 0.0000 *Calm: 8.39%Calm: 12.50%Calm: 29.17%11/30/083.6030613.416.2NA12/3/081.8020413.931.7NA19.4NA14.2NA12/6/082.2412/9/085.90813.032612.0TABLE 3Comparison of Ambient Air Concentrations at Organ Pipe, Hayden, and Winkelman Monitoring StationsData Evaluation ReportASARCO LLC Hayden, Arizona Plant SiteAirContaminantEPA Region IXPreliminaryRemediation Goal1(μg/m3)Average AmbientAir Concentrationat Organ PipeNational Monument2(μg/m3)Average AmbientAir Concentrationat Hayden JailMonitoring Station3(μg/m3)Average AmbientAir Concentrationat Hayden4(μg/m3)Average AmbientAir Concentrationat Winkelman5(μg/m3)Ratio ofConcentrationat Hayden toOrgan PipeNational MonumentRatio ofConcentrationat Winkelman toOrgan PipeNational MonumentRatio ofConcentrationat Hayden toWinkelmanRatio ofConcentrationat Hayden toEPA PreliminaryRemediation GoalRatio ofConcentrationat Winkelman toEPA PreliminaryRemediation GoalPM10--16NA34.717.92.171.121.94----Arsenic0.00045 ND (0.0003-0.0006)0.03310.02090.0078034.8-69.7613.0-26.062.6846.417.3Cadmium0.0011ND (0.0006)0.01680.0022ND (0.0018-0.0027)3.6763.00-4.5060.814-1.2262.001.64-2.456Chromium0.000160.0004930.006410.00130.0006642.641.351.968.134.15Copper--0.001420.8650.05010.22235.31560.226----Lead--0.001330.06860.1010.028275.921.23.58----Table Notes:1EPA Region IX Preliminary Remediation Goals, Ambient Air, October 20042The data is based on analysis of 15 PM10filter samples collected at a 24-day interval from January 2, 2006 to December 4, 2006 at Organ Pipe National Monument.3Sandra Wardwell, Data Management Team, Arizona Department of Environmental Quality, "ADEQ XRF Data Hayden PM10 Dichot Filters 1991-2001", E-mail to Prabhat Bhargava, October 13, 2005.4The date range of the Hayden data is between November 13, 2007 and November 30, 2008.6The date range of the Winkelman data is between January 12, 2008 and December 9, 2008.7Ratios were calculated using the reporting limit when the results were not detected.8Bold values with bold outline indicate the value exceeds the comparison criteria.9Bold italicized values have detection limits above one or more of the comparison criteria.10-- = Not established11NA = Not available12ND = Not detected; reporting limit is shown in place of a result.13PM10= particulate matter with a diameter less than or equal to 10 microns in size14μg/m3= micrograms per cubic meter

# This page is intentionally blank.

# 1 

# Appendix D

Control Measures and Technologies Implemented at the ASARCO

Ray Complex and Hayden Smelter and Concentrator

Table 1

Process and Control Eq uipment Description

Equipment Quantity Manufacturer Model/Type Serial

No. Date

Installed

or

modified Size Rated

Capacity New or

Existing

Sampling and

Unloading

Operations:

Dump hopper 1 Linkbelt stainless

steel lining n/a 1983 12'x28.6' 175 tons per

hour (tph),

1,533,000

tons per

year (tpy) Existing

Unloading

conveyors 3 Linkbelt n/a 60"x17'8" 175 tph,

1,533,000

tpy Existing

51M n/a 1964/1968 cars:

30"x20' Existing

Bedding area -

4 storage bins 4 Concrete n/a n/a 1964/1968 220'x40'x20' 30,000 wet

tons,

26,000 dry

tons Existing

Bedding area -

Vibrating

screen/ grizzly 1 Ty-rock Isurface/F300 7308 1967 4' x 8' n/a Existing

Reclaim

hopper &

feeder 1 Feeder Belt,

Rex Chainbelt

Inc. n/a n/a 1968 Hopper: 20

cy

Belt feeder:

42" wid. x

20' centers 150 tph,

1,533,000

tpy Existing

No. 2 main

inclined

conveyor 1 n/a 50 HP motor n/a 1982 24" width

by 625'

length 300 tph,

2,628,000

tpy Existing

No. 3 inclined

conveyor 1 Boston Dulon

600 3 -ply n/a 1982 30" width

by 439'

length 300 tph,

2,628,000

tpy Existing

Delumper at

oxygen furnace

charge system 1 Jeffrey

Manufacturing

Division Jeffrey

5WR5

/Reversible

impactor 13492 1982 n/a 300 tph,

2,628,000

tpy Existing

No. 4

Horizontal

Conveyor 1 Boston Dulon

600 4-ply n/a 1982 42" width

by 139'

length 300 tph,

2,628,000

tpy Existing

Flash Furnace

Building

Operations:

# 2 Table 1

Process and Control Eq uipment Description

Equipment Quantity Manufacturer Model/Type Serial

No. Date

Installed

or

modified Size Rated

Capacity New or

Existing

Wet bin

conveyors,

dryer feed &

weigh belts 4 ASARCO

design n/a n/a 1983 30" width 85 tph,

744,600 tpy Existing

Hammer Mill 1 Pennsylvania

Crusher

Corporation GRT#1 n/a 1983 42" x 12" x

31" 6tph,

52,560 tpy Existing

Nos. 1 & 2

Fluid bed

dryers with

burners 2 Fuller 11-81-

20337-106

Farrier

natural gas

burners n/a 1983 11'3"

diameter

(ID shell) x

26' high Production:

64

wet ton/hr,

560,640 tpy

Burner

firing gas:

38,000 CFH

x 2 burners

Burner

firing oil:

270 gph x 2

burners

Maximum

dryer usage:

6,915 hours

per year New

Blow tank

pneumatic

conveyor

(hammer mill

feeds surge bin

then material

drops into line

with air blown

to dry dust bin) 1 Fuller/Abresist n/a n/a 1983 4" 4.2 tph,

36,792 tpy Existing

Fluid bed dryer

product

baghouse Nos.

1 & 2 2 Peabody

Process

Systems, Inc. PMTR-10-

1692 TW

Pulse n/a 1982 n/a Gas flow

rate: 55,000

ACFM New

Dry screw

conveyors #1-

8, furnace

charge system 8 FMC n/a n/a 1983 16" and 9"

width 56.9 tph,

498,444 tpy Existing

Feed screw

conveyors #10-

16, furnace

charge system 7 FMC n/a n/a 1983 12" width n/a Existing

200-ton west

wet bins nos. 1

& 2 2 n/a n/a n/a 1983 n/a n/a Existing

# 3 Table 1

Process and Control Eq uipment Description

Equipment Quantity Manufacturer Model/Type Serial

No. Date

Installed

or

modified Size Rated

Capacity New or

Existing

200-ton dry

bins nos. 1

through 4, each

served by one

ventilation

baghouse 4 DCE Vokes DLM

V10/10 F3

20 envelope

filter bags n/a 1983 Cloth area:

105 sq. ft. 1050 acfm Existing

30-ton dust bin

no. 1 served by

a ventilation

baghouse 1 BHA 4 Cartridge

Filters n/a 1998 Cloth area:

480 sq. ft. 1200 acfm Existing

30-ton flux bin

no. 3 served by

a ventilation

baghouse 1 Fuller Pulse n/a 1983 Cloth area:

166 sq. ft. 1200 acfm Existing

Oxygen flash

furnace with

burner (smelter

and

concentrator) 1 Inco with oxygen

burner n/a 1983 24 ft. x 80

ft. 24,000 tpd

concentrates

When

process is

down,

furnace is

kept hot

with up to 4

natural gas

burners.

Maximum

gas usage is

91,113

CFH. New

WGHS

Venturi

Scrubber 1 Swemco Inc. SW-A138696

Variable

throat 14520 August,

1997 42" inlet

diameter flow rate

62,913 acfm n/a

WGHS

Disengagement

vessel 1 Swemco Inc. SW-A138696 14525-

100 August,

1997 5' diameter

inlet flow rate

62,913 acfm n/a

WGHS

Condensing

Heat

Exchanger 1 Fleck, Ltd. 95-336

Shell & tube 1781 1997 8' diameter

vessel 80 MBtu/hr

heat

exchange n/a

WGHS

Saturation

Tower 1 Structural

Steel and

Fabrication

Company Refractory

lined wet

tower n/a fourth

quarter

1997 25' high x 8'

dia. 125,168

acfm n/a

WGHS

Stripping

Tower 1 Structural

Steel and

Fabrication

Company Disk and

Do-nut n/a fourth

quarter

1997 34' high x 3'

dia. 1,032 acfm n/a

Revert

# 4 Table 1

Process and Control Eq uipment Description

Equipment Quantity Manufacturer Model/Type Serial

No. Date

Installed

or

modified Size Rated

Capacity New or

Existing

Crushing

System:

Feeder 1 Kue-Ken Hydro

stroke feeder 270 1980 n/a 200 tph,

42,000 tpy New

Jaw Crusher 1 Kue-Ken n/a 11011781 1980 25' x 42' 200 tph,

42,000 tpy New

Vibrating

screen 1 Tyler Industry R1204X 502626 1980 n/a 200 tph,

42,000 tpy New

Cone crusher 1 Kue-Ken n/a 3095132 1980 n/a 200 tph,

42,000 tpy New

Belt conveyors 2 Kue-Ken BC-203 and

BC-206 n/a 1980 n/a 200 tph,

42,000 tpy New

Revert

crushing

baghouse 1 Peabody

Process

Systems, Inc. PMTR-10-

592W

pulse 01-5011-

01 1989 6,974 sq. ft. 32,000 acfm New

Converter

Building:

Converters 5 n/a Pierce Smith

Each

converter

has a natural

gas burner to

keep vessel

heated

during

holding fire. n/a 1969 one with

13'x35', one

with 13'x30'

and three

with 13'x33' 100 tons

copper per

cycle

170 tons

matte per

cycle

40 tons cold

dope per

cycle

Maximum

gas usage:

17,695.8

CFHx1.5

converters Existing

Converter

silica

conveying

system 1 B.F. Goodrich

for belts Consists of

three

unloading

hoppers with

conveying

belts n/a 1968 24" belts

44.3' length 60 tph,

525,600 tpy Existing

Converter

primary

hooding 5 ASARCO

design Steel n/a 1999/2000 length 10.28

feet n/a Existing

Converter

cyclones 10 Ducon Model 1000

with

high

efficiency

duclones n/a 1966 and

1968 1000 n/a Existing

Converter

spray chamber 1 ASARCO Spray n/a 1973 n/a n/a Existing

Converter 1 ASARCO n/a n/a 1979 n/a n/a Existing

# 5 Table 1

Process and Control Eq uipment Description

Equipment Quantity Manufacturer Model/Type Serial

No. Date

Installed

or

modified Size Rated

Capacity New or

Existing

secondary

hooding design

Secondary

hoods

baghouse 1 Hosakawa

Mikropul 1000 J-10-

30-TRH

pulse type 950281

H1-H7 1996 Seven

modules

with 11,780

sq. ft. per

module 300,000

acfm total

working

volume,

0.1158

gr/dscf

maximum

dust

loading, and

0.0861

gr/dscf inlet

loading n/a

Gas Cleaning

Plant:

Process gas

precipitators 4 Chemiebau Four train n/a 1969 n/a 200,000

scfm n/a

Gas Scrubbers 5 Rust

Engineering Open towers

(3) and

packed (2) n/a 1961 n/a n/a n/a

Mist

precipitators 8 ASARCO

design Mist wet

ESP

Gas flows

through 4

parallel

trains, each

2 units deep,

thus 4 inlets

and 4 outlets n/a 1983 180 tubes

15 foot

length n/a n/a

Gas cleaning

plant pugmill 1 ASARCO n/a n/a 1967 n/a n/a n/a

Acid Plant:

Acid plant 1 Monsanto double

contact n/a 1983 n/a 2,820 STPD

(100% acid

basis) as

93%

H2SO4

using 12.4%

SO2

24,703,200

STPY n/a

Acid plant

preheater 1 Thermal

Transfer

Corporation Natural gas

fired n/a 1983 22.75'x8'

O.D. shell 40,000 scfm

of start up air



# 107,925

CFH max.

fuel input Existing

Anode Plant:

# 6 Table 1

Process and Control Eq uipment Description

Equipment Quantity Manufacturer Model/Type Serial

No. Date

Installed

or

modified Size Rated

Capacity New or

Existing

Anode

furnaces #1 &

#2 with

burners, Anode

furnace #3

with burners

(spare) 3 n/a Fuller Co.

Natural gas

fired n/a 1971 13'x35' 330 ton per

furnace

Gas usage

for both

furnace:

648 cfm

max.

measured

and 736.7

cfm (402

gph) max.

estimated Existing

Anode steam

boiler 1 Parker Packaged

boiler

horizontal

drum,

natural gas

fired n/a 1995 90 HP 3,780,000

Btu/hr Existing

Anode casting

wheels, north

& south 2 StearnsRodgers

Corporation n/a n/a 1972 29' diameter 24 mold Existing

Anode launder

burners 6 Hauck RFS 1120A

Natural gas

fired n/a 1972 2" n/a Existing

Anode ladle

burners 3 ASARCO Natural gas

fired n/a 1972 4" n/a Existing

Oxygen Plant:

Oxygen plant

boiler 1 General

Electric CB

Packaged

Boiler

700X-300,

natural gas

fired L-75227 1982 n/a 8,740,000

Btu/hr

8,740 CFH

designed

natural gas

usage Existing

Oxygen plant 1 Air Products Consists of

main air

compressor,

oxygen

compressor,

direct

contact after

cooler,

liquid

oxygen

storage tank

and cooling

tower n/a 1983 n/a 650 tpd

gaseous

oxygen

5,694,000

tpy Existing

Furnace

Ventilation

# 7 Table 1

Process and Control Eq uipment Description

Equipment Quantity Manufacturer Model/Type Serial

No. Date

Installed

or

modified Size Rated

Capacity New or

Existing

Gas Control:

R & R

Electrostatic

precipitator 1 ASARCO Inc. Plate wire n/a built in

1961 and

expanded

in 1968 62'x76' 43,350

dscfm n/a

R & R ESP

screw

conveyors #1-

15, 17, 18 17 Screw

Conveyor

Corporation n/a n/a 1968 #1-15: 9"

#17, 18: 12" 12 tph,

105,120 tpy Existing

R & R ESP

Bucket

Elevator 1 Automation

Supply 3-SA n/a 1975 48' center to

center 35 tph,

306,600 tpy Existing

R & R ESP

Pugmill 1 Automation

Supply &

Engineering Double shaft n/a 1968 n/a 15 ton

storage Existing

Other

Processes:

Reverts (matte

& slag) Screen

#1, south of

acid tanks 1 Screen USA BF35E2/two

deck

4'x8' for

closed single

deck and

12'x14' for

open single

deck 3011096 1996 4'x8' and

12'x14' 100 tph,

44,000 tpy New

Reverts (matte

& slag) Screen

#2, south of

converter isle 1 Grizzly Open single

deck n/a 1994 10'x15'

33/34"

openings 200 tph,

40,000 tpy New

WTP lime silo 1 Portec 850-

QLH/Steel n/a 1983 n/a 150 ton Existing

WTP lime silo

baghouse 1 Portec DF-44 n/a 1983 1 HP 1,176 cfm n/a

0.5 million

gallon diesel

storage tank 1 Garland Steel

Company steel n/a fourth

quarter

1971 500,000

gallons

diameter 52

feet height

32 feet n/a Existing

# 8 Table 2

Stack Information

Identification Description Building Size Exit Gas Temperature Exit Gas

Velocity Height Inside

Dimensions

HP-1 Acid plant

(main stack

core) n/a 303 Ε F 19 fps 1000 feet 17 foot

diameter

HP-2 Main stack

annulus

(ventilation

gases) n/a 135 Ε F 34 fps 920 feet 432 sq. ft.

HP-4 Revert

crusher

baghouse

stack n/a 99 Ε F 42 fps 46 feet 3.83 foot

diameter

HP-26 #2 acid plant

preheater n/a n/a n/a 65 feet 5.42 foot

diameter

HP-28 Oxygen plant

boiler n/a 346 Ε F (estimated) 1,650 scfm

(estimated) 22 feet 1.66 foot

diameter

HP-32 200 ton dry

#1 bin

ventilation

baghouse

(located

inside furnace

building) n/a Unknown Capacity 1050

acfm 6 feet 0.5' x 0.5'

HP-33 200 ton dry

#2 bin

ventilation

baghouse

(located

inside furnace

building) n/a Unknown Capacity 1050

acfm 6 feet 0.5' x 0.5'

HP-34 200 ton dry

#3 bin

ventilation

baghouse

(located

inside furnace

building) n/a Unknown Capacity 1050

acfm 6 feet 0.5' x 0.5'

HP-35 200 ton dry

#4 bin

ventilation

baghouse

(located

inside furnace

building) n/a Unknown Capacity 1050

acfm 6 feet 0.5' x 0.5'

# 9 Table 2

Stack Information

Identification Description Building Size Exit Gas Temperature Exit Gas

Velocity Height Inside

Dimensions

HP-38 30 ton dust

bin

ventilation

baghouse #1

(part of

pneumatic

conveying

system) n/a Ambient Capacity 480

acfm 12.25 feet 0.68' x 0.66'

HP-39 30 ton dust

bin

ventilation

baghouse #2

(part of

pneumatic

conveying

system) n/a Ambient Capacity 480

acfm 12.25 feet 0.68' x 0.66'

HP-50 Anode steam

boiler n/a n/a n/a 32 feet 20 inch

diameter

# 10 Table 3

Continuous Emission Monito ring Systems Information

Type Manufacturer Model Serial No. Range Location

Acid Plant Tail

Gas SO 2



# Monitor Ametek 4600B - Analyzer

4000 - Control Station 6146 0-0.20% SO 2 

# At the acid plant exit prior

to the merging with the

main flue to stack

Acid Plant Tail

Gas Flow

Monitor EMRC/Rosemount Mark 5/

3051CD1A22A1AB4M5 0306343 0-2.5 “H 2 

# O Dp

S-Type Pitot At the acid plant exit prior

to the merging with the

main flue to stack

Acid Plant Tail

Gas Opacity

Monitor Lear Ziegler 1100M 0833 0-100% opacity At the acid plant exit prior

to the merging with the

main flue to stack

R & R Flue

Opacity

Monitor Monitor Labs 550 5500157 0-100% opacity At outlet flue of the R & R

Cottrell ESP prior to the

merging with the secondary

hoods off-gas flue

Converter

Secondary

Hoods Off-gas

SO 2 

# Monitor Ametek 4600B - Analyzer

4000 - Control Station 5289 0-1.0% SO 2 

# At the secondary hooding

flue before baghouse

Converter

Secondary

Hoods Off-gas

Flow Monitor EMRC/Rosemount Mark 5/

3051CD1A22A1AB4M5 86585 0-2.5 “H 2 

# O Dp

S-Type Pitot At the secondary hooding

flue before baghouse

Furnace

Ventilation

Gas SO 2



# Monitor Ametek 4600B - Analyzer

4000 - Control Station 6274 0-0.4% SO 2 

# At the furnace vent flue

prior to the merging with

dryer exhaust gases

Furnace

Ventilation

Gas Flow

Monitor EMRC/Rosemount Mark 5/

3051CD1A22A1AB4E5 0538569 0-2.5 “H 2 

# O Dp

S-Type Pitot At the furnace vent flue

prior to the merging with

dryer exhaust gases

# 11 Table 4

Ambient Sulfur Dioxide Analyzers in the Hayden Area

Identifier Unit Make/Model Owned and Operated by Location

MT0 Montgomery

Ranch Thermo Environmental pulsed

fluorescent Model 43B ASARCO 2.52 miles

northwest of

ASARCO

JL Jail - ASARCO Thermo Environmental pulsed

fluorescent Model 43C ASARCO 0.58 miles west of

ASARCO

HJ0 Hayden Junction Thermo Environmental pulsed

fluorescent Model 43B ASARCO 2.00 miles west of

ASARCO

GA Garfield Avenue Thermo Environmental pulsed

fluorescent Model 43C ASARCO 0.56 miles south of

ASARCO

GH0 Globe Highway Thermo Environmental pulsed

fluorescent Model 43B ASARCO 0.50 miles east of

ASARCO

JL Jail - ADEQ Thermo El ectron pulsed fluorescent

(TECO) Model 40 ADEQ 0.58 miles west of

ASARCO



# Table 5

Ambient PM 10 

# Samplers in the Hayden PM 10 

# Nonattainment Area

Identifier Unit Make/Model Owned and Operated by Location

JL Hayden Old Jail

- ADEQ Tapered Element Oscillating

Microbalance Technology

(TEOM) ADEQ 0.58 Miles west

of ASARCO

RS Riverside

Maintenance

Yard Anderson Hi-Vol Pinal County Air Quality

Control District 15.5 Miles

northwest of

Hayden

# 12 This page is intentionally blank.

# 1 

# Appendix E

ADEQ Memo Certifying Air Quality Data for the Hayden Area

# 2 This page is intentionally blank.

# 1 Date: December 1, 2009

To: Ira Domsky, Deputy Director

Air Quality Division

Through: Steven Peplau, Section Manager

Air Assessment Section

From: Sandra Wardwell, Unit Manager

Data Management & QA Unit

Subject: Evaluation of QA/QC information for Pb samples collected by EPA in Hayden and

Winkelman

EPA Region 9 Superfund began environmental sampling in the Hayden-Winkelman area in November

2006. Air quality samples of particulate matter were anal yzed by a contract laboratory (Chester LabNet).

The analytical results for lead (Pb) from sample s collected in 2006-2008 were used by ADEQ to

recommend the Hayden area as nonattainment for Pb under the revised NAAQS. ADEQ reported these

data collected at the EPA Superfund sites in Hayd en and Winkelman to the EPA Air Quality System

(AQS) database on August 27, 2009, listing EPA Region 9 as the Primary Quality Assurance

Organization (PQAO) and ADEQ as the Reporting Organization.

This document describes ADEQ's assessment of the quality assurance procedures used by EPA Region 9

Superfund for collection and validation of the air quality samples.

DOCUMENTS

Project Plans

The EPA contracted CH2M Hill to conduct site char acterization and remedial activities at the ASARCO

LLC Hayden Plant Site in 2005. CH2M Hill submitted a sampling and analyses plan to EPA consisting of

3 documents in November 2005:

• Quality Assurance Project Plan (QAPP)

• Field Sampling Plan (FSP)

• Data Management Plan (DMP)

The QAPP was prepared following EPA guidelines:

• EPA guidance for Quality Assurance Project Plans (2002)

• EPA Requirements for Quality Assurance Project Plans (2001)

Collection of air samples began in November 2006. The QAPP describing Project Management/Data

Quality Objectives, Measurement Data Acquisition, Assessment/Oversight, and Data Validation and

Usability was in place prior to the start of sampling. 

# Memorandum

# 2 CH2M Hill was the contractor for the remedial investigation from 2005 to 2009. ITSI assumed the

contract in 2009. ITSI added addendums to the samp ling and analysis plan documents to change the

responsible parties listed in the plans.

These documents were obtained from the ITSI ftp website.

INSTRUMENTATION

Two Partisol-Plus Model 2025 Sequential Air Samplers are being used for this project. This samples has

an EPA PM 10 

# reference designation of RFPS-1298-127. The designation was given in December, 1998.

These samplers also meet the CFR requirements for PM 10 

# coarse samplers ( PM10 C 

# ) since a Federal

Register notice published June 2, 2009 (page 26395), announced this sampler received designation for

coarse (PM 10 

# -PM 2.5 

# ) sampling as part of a pair of samplers with a new reference designation of RFPS0509-176. This sampler meets the requirements of 40 CFR 50 Appendices Q and R.

Field Sheets

Calibration and flow checks for the air quality sampler s at the Winkelman and Hayden monitoring sites

were conducted as scheduled in the QAPP. Review of the field sheets indicates one monthly flow check

could not be completed due to a pump failure at th e Hayden monitor (August 21, 2008). Chain of custody

information for the samples collected since the last good check (August 18, 2008) were reviewed to

determine if the prior samples were valid. All sampl es are valid; the pump failure occurred on the day of

the check. Consequently, repairs to the sampler were made and the next valid sample occurred on

September 12, 2008.

These documents were obtained from the ITSI ftp website.

Chain of Custody Forms and Laboratory Reports.

Chain of custody information was collected for each sample. This information is included in the

Laboratory reports, which also include a statement certifying the validity of th e results, and precision,

accuracy, and replicate results. The reports also incl ude a Transmittal Memorandum with each batch of

filters from the consultant to the laboratory. This memorandum lists the valid filters to be processed and

also lists the invalid filters.

These reports were obtained from ITSI.

DATA

The DMP states in Section D.1, 'All data for all parameters will undergo two levels of review and

validation: 1)at the laboratory, and 2) outside th e laboratory by the EPA quality Assurance Management

Section or their designee." The laboratory prepared and shipped all filters to the consultant. The

consultant loaded the samplers and collected the filters after the sampler ran. The consultant's transmittal

memorandum accompanying the filters and chain of cust ody information to the laboratory lists valid and

invalid filters. This indicates the field personnel we re invalidating samples if the sampler was not

operating correctly or if the filter was damaged during loading and unloading of the sampler. The

laboratory analyzed the valid filters.

A spreadsheet of validated data was obtained from J ohn Hillenbrand, EPA Region 9 in May, 2009. This

file lists analytical results for samples collected 10/22/2006 through May 13, 2009. These results had been

reviewed and certified by the contract laboratory ( see Chain of Custody Forms and Laboratory Reports

above). ADEQ assumed EPA reviewed the data resu lts since validation flags, graphs and other

information was included in the spreadsheet.

# 3 Preliminary Report

CH2M Hill submitted a Technical Memorandum to EPA on December 31, 2008 entitled, "Preliminary

Evaluation of PM 10 

# and Metals Concentrations from October 2007 to December 2008 in Ambient Air at

the Hayden and Winkelman Monitoring Stations". The report used results from samples collected

11/13/2007 through 11/30/2008. Several samples are labeled 'rejected' with no reason given in the tables

of analytical and meteorological results. Footnote 28 to Tables 1 and 2 states: "This table should be

considered preliminary and will be revised based on incoming data, final data validation and QAQC."

The report identifies three 3-month means in exceedance of the NAAQS at the Hayden monitoring station

in 2008.

The report was obtained from EPA Region 9, John Hillenbrand.

CONCLUSIONS

1. A QAPP was submitted to EPA in November 2005, prior to the start of sampling in October 2006.

This complies with the EPA requirement for air m onitoring programs to have an approved QAPP prior

to the start of sampling.

2. Addendums to the QAPP documents were made by the new consultant in March 2009.

3. Instrument checks were perform ed as described in the Field Sampling Plan. Copies of the checks are

available ITSI.

4. Laboratory reports contain chain of custody in formation, transmittal information, and laboratory

quality control data along with the analytical results.

5. ADEQ's review of the above information conclu des the lead data provided by Region 9 Superfund has

experienced at least 3 levels of validation, (sampl er field checks and verification of sample validity

immediately after collection, laboratory analysis and quality control checks of laboratory procedures,

and review by EPA Superfund staff. These procedur es are comparable to the procedures followed by

ADEQ air assessment staff.

6. The preliminary report by CH2M Hill omitted sever al sample results that were included in the EPA

spreadsheet. CH2M Hill footnotes do not indicate wh y those samples were omitted but do state that

additional validation and QA/QC could change the resu lts included in the report. ADEQ review of all

the QA/QC documentation supports EPA’s determination that the samples and the data generated from

those samples were valid.

7. All violations of the 2008 Pb NAAQS calcula ted by ADEQ and included in the recommendation to

designate the Hayden area as nonatta inment are accurate and valid.

# 4 This page is intentionally blank.

# 1 

# Appendix F

ASARCO Contractor Zephyr Environmental Corporation

Report on ADEQ’s Pb Boundary Recommendation

# 1 This page is intentionally blank.

# REVIEW OF

ARIZONA DEPARTMENT OF ENVIRONMENTAL QUALITY’S

TECHNICAL SUPPORT DOCUMENT

FOR THE DEPARTMENT’S

PROPOSED BOUNDARY RECOMMENDATION

FOR THE 2008 REVISION OF THE NAAQS FOR LEAD

Prepared for:



# ASARCO LLC

5285 E AST 

# W ILLIAMS 

# C IRCLE



# , S UITE 

# 2000

T UCSON



# , A RIZONA 

# 85711-7711

Prepared By:



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION



# 10420 L ITTLE 

# P ATUXENT 

# P ARKWAY



# , S UITE 

# 320

C OLUMBIA



# , M ARYLAND 

# 21044

N OVEMBER 

# 10, 2009

# R EVIEW OF 

# ADEQ’ S 

# TSD FOR 

# P ROPOSED 

# L EAD 

# NAAQS B OUNDARY 

# R ECOMMENDATION



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION 

# 1 

# CONTENTS

EXECUTIVE SUMMARY ............................................................................................................. . 3

1.0 BACKGROUND ................................................................................................................... 5

2.0 ISSUES IDENTIFIED ........................................................................................................... 7

2.1 E XCEPTIONAL 

# E VENTS 

# ................................................................................................. 7

2.1.1 Dates Deemed to Have Exceptional Wind Speeds ...................................... 10

2.1.2 Impact of Removing Exceptional Events ...................................................... 12

2.2 S UITABILITY OF 

# M ONITOR 

# L OCATION 

# .......................................................................... 13

2.3 Q UALITY 

# A SSURANCE 

# ................................................................................................ 15

2.4 D ATA 

# C OMPLETENESS 

# (V ALIDATION OF 

# T HREE 

# -M ONTH 

# M EANS 

# ) .................................. 16

2.5 U NCERTAINTY 

# R EGARDING 

# D ESIGN 

# V ALUE 

# ................................................................. 21

# R EVIEW OF 

# ADEQ’ S 

# TSD FOR 

# P ROPOSED 

# L EAD 

# NAAQS B OUNDARY 

# R ECOMMENDATION



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION 

# 2 

# APPENDICES

Appendix A Hayden Air Quality Monitoring Resu lts, Received from EPA on September 23,

2009

# R EVIEW OF 

# ADEQ’ S 

# TSD FOR 

# P ROPOSED 

# L EAD 

# NAAQS B OUNDARY 

# R ECOMMENDATION



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION 

# 3



# EXECUTIVE SUMMARY

In a September 28, 2009 document entitled “Arizona Air Quality Designations Technical Support

Document Boundary Recommendation for the 2008 Revision to the National Ambient Air Quality

Standard for Lead” (TSD), the Arizona Department of Environmental Quality (ADEQ) made a

proposal that the Governor should recommend to the U.S. Environmental Protection Agency

(EPA) that portions of Gila and Pinal Counties (hereinafter the Hayden area) be designated as

being in nonattainment of the National Ambient Air Quality Standard (NAAQS) for lead. The

ADEQ’s proposal is based on air monitoring data collected in the Hayden area as part of a

remedial investigation in a CERCLA proc eeding between the EPA, ADEQ and ASARCO LLC

(Asarco).

Asarco retained Zephyr Environmental Corporat ion (Zephyr) to review the TSD underlying the

ADEQ’s proposal.

Zephyr’s review identified the following issues:

• Some of the monitored lead values relied upon in the TSD are associated with

“exceptional events” under 40 CFR Part 50 and ADEQ guidance and should therefore

not be counted toward determining whether the Hayden area is in nonattainment of the

NAAQS for lead. When these “exceptional events” values are excluded there are no

monitored values above the NAAQS.

• The Hayden monitor is located on top of the Town of Hayden maintenance building.

Given the soldering/welding activities and vehicle traffic that take place at the

maintenance yard, the potential exists for contamination of the samples obtained using

the monitor.

• The Quality Assurance (QA) plan governing the Hayden monitor and the results of the

various tests and calibrations required under the quality assurance rules governing

ambient air monitors were not available at the time of Zephyr’s review. As of the date of

the TSD, the ADEQ had not reviewed information on the required quality assurance

checks of the Hayden monitor, and it remains uncertain whether such checks occurred.

This calls into question the validity of the data generated using the monitor.

• In support of the ADEQ’s proposal, the TSD (at Table 4-1) compares 3-month means to

the NAAQS. However, the TSD does not demonstrate the ADEQ validated the 3-month

means according to 40 CFR Part 50, Appendix R Section 4(c) procedures. If these

procedures were followed, it would be found that all the 3-month means above the lead

NAAQS do not meet the specific 75% data completeness requirement.

• The Design Value (i.e., the single mean concentration that is required under the rules to

be compared to the NAAQS to demonstrate attainment or nonattainment) was not

clearly identified or adequately discussed in the TSD.

Based on these findings, the proposed nonattainment designation for the Hayden area is

unwarranted. In order to make a defensible proposal of a nonattainment designation, more

representative, quality controlled and quality assured data are needed, and the data need to be

# R EVIEW OF 

# ADEQ’ S 

# TSD FOR 

# P ROPOSED 

# L EAD 

# NAAQS B OUNDARY 

# R ECOMMENDATION



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION 

# 4 

# evaluated properly under the rules at 40 CFR Part 50, Appendix R and ADEQ guidance,

including the effect of exceptional events and data validation.

# R EVIEW OF 

# ADEQ’ S 

# TSD FOR 

# P ROPOSED 

# L EAD 

# NAAQS B OUNDARY 

# R ECOMMENDATION



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION 

# 5 

# 1.0 BACKGROUND

ASARCO LLC (Asarco) conducts beneficiation and smelting of copper ores at its Ray ComplexHayden Operations in Hayden, Arizona, approx imately 80 miles east-southeast of Phoenix and

60 miles north of Tucson. In April 2008 a CERCLA Administrative Settlement Agreement and

Order on Consent (Settlement Agreement) was entered into by the U.S. Environmental

Protection Agency (EPA), the Arizona Department of Environmental Quality (ADEQ) and

Asarco. One of the stipulations of the Settlement Agreement was that Asarco conduct a

Remedial Investigation/Feasibility Study (RI/FS), which among other things called for the

continuation of air quality monitoring that the EPA had already begun in the Hayden area. That

monitoring addressed several air pollutants, one of which was lead.

On November 12, 2008 the EPA revised the National Ambient Air Quality Standard (NAAQS) for

lead. 1 

# The revised NAAQS was established at 0.15 μg/m 3 

# on a rolling three-month averaging

period.

On September 28, 2009 the ADEQ completed a Technical Support Document 2 

# (TSD) in which it

proposed that the Governor recommend to the EPA a designation of portions of Gila and Pinal

Counties as being in nonattainment of the revised NAAQS for lead. The proposed

nonattainment area is presented in Figure 1-1.

Asarco retained Zephyr Environmental Corporation (Zephyr) to review the ADEQ’s proposal. In

its review, Zephyr evaluated both the technical and the regulatory merits of the ADEQ’s

proposal.

This report documents Zephyr’s findings.

1 

# 73 Fed. Reg. 66964.

2 

# “Arizona Air Quality Designations Technical Supp ort Document Boundary Recommendation for the 2008

Revision to the National Ambient Air Quality Standard for Lead,” Air Quality Division, ADEQ.

# R EVIEW OF 

# ADEQ’ S 

# TSD FOR 

# P ROPOSED 

# L EAD 

# NAAQS B OUNDARY 

# R ECOMMENDATION



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION 

# 6 

# Figure 1-1

ADEQ Proposed Lead Nonattainment Area for Hayden, Arizona

(taken from ADEQ’s TSD)

# R EVIEW OF 

# ADEQ’ S 

# TSD FOR 

# P ROPOSED 

# L EAD 

# NAAQS B OUNDARY 

# R ECOMMENDATION



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION 

# 7



# 2.0 ISSUES IDENTIFIED

Zephyr identified several issues which, to varying degrees, call into question the ADEQ’s

proposal of the Hayden area as nonattainment for lead. These issues are elaborated upon

below.



# 2.1 E XCEPTIONAL 

# E VENTS

40 CFR Part 50 defines an exceptional event as “an event that affects air quality, is not

reasonably controllable or preventable, is an event caused by human activity that is unlikely to

recur at a particular location or a natural event...” 40 CFR 50.14(c)(3)(iv) presents the criteria

that must be met for an event to be deemed exceptional under this rule:

• The exceptional event is a cause of the monitored value,

• The event in question is beyond normal historical fluctuations, and

• There would not have been an exceedance of the NAAQS without this event.

Should a monitored value be excluded for being associated with an exceptional event, 40 CFR

50.14(b) stipulates that those excluded data are not to be included in a determination of an

exceedance of a NAAQS.

On October 15, 2009, the ADEQ issued a

report entitled “The Impact of Exceptional

Events ‘Unusual Winds’ on PM 10



# Concentrations in Arizona” 3 

# that provides

guidance as to how to determine what

constitutes an exceptional event in terms of

winds. The report considered historical

environmental and meteorological data,

including data from Hayden. One of the

conclusions of the report was as follows:

For exceptional events purposes, “unusual winds” can be defined as any wind that has

the ability to create wind blown dust. Literature and data from monitors indicate that the

phenomenon of blowing dust can occur over a broad range, but generally is associated

with hourly averaged wind speeds that are above 10 miles per hour, which are

commonly associated with wind gusts over 20 miles per hour.

As a first step Zephyr reviewed both lead concentrations and wind speeds for the entire year of

2008 to identify any potential relationship between the two. As shown in Figure 2-1, there

clearly is a correlation between three-mont h average lead concentrations observed at the

3 

# “The Impact of Exceptional Events ‘Unusual Winds’ on PM 10 

# Concentrations in Arizona”, ADEQ Air

Quality Division (October 15, 2009). 

# Recent ADEQ guidance supports the

determination that three days in late

2008 are “exceptional events.” When

they are removed, the revised Design

Concentration is below the NAAQS.

# R EVIEW OF 

# ADEQ’ S 

# TSD FOR 

# P ROPOSED 

# L EAD 

# NAAQS B OUNDARY 

# R ECOMMENDATION



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION 

# 8 

# Hayden monitor and three-month average wind speeds observed at the same monitor. Both the

three-month average lead concentrations and wind speeds are at their lowest in the spring, then

attain an intermediate maximum in June, and then reach their greatest values in the late fall.

Figure 2-1

Average Lead Concentrations and Wind Speed Observed at Hayden Monitor, 2008

A single short-term (e.g., an hour) concentration at a monitor that is extraordinarily high can lead

to a high 24-hr concentration (even with the rest of the 24-hr period having fairly low impacts).

This is illustrated, by way of example, by the data in Figure 2-2, taken from a continuous PM 10 

# monitor located at the University of Texas at El Paso (EPA ID # 481410037). 0.000 0.050 0.100 0.150 0.200PbConcentration(ug/m3) 

# Rolling 3

‐ Month Lead Averages

Hayden Monitor, 2008

4.0 4.5 5.0 5.5 6.0WindSpeed(mph) 

# Rolling 3

‐ Month Average Wspd

Hayden Monitor, 2008

# R EVIEW OF 

# ADEQ’ S 

# TSD FOR 

# P ROPOSED 

# L EAD 

# NAAQS B OUNDARY 

# R ECOMMENDATION



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION 

# 9 

# Figure 2-2

Example of One Hour of Elevated Concentration Leading to High 24-hr Concentration

As shown in the figure above, the vast majority of the hourly PM 10 

# concentrations on this day

are below the 24-hr NAAQS of 150 μg/m 3 

# . However, the overall daily average is radically

affected by several very high individual hourly monitored values (although not indicated on this

plot, the high concentrations were associated with winds in excess of 10 mph), ultimately

leading to a 24-hr concentration greater than the NAAQS.

Therefore, a day that has a single hourly av erage wind speed of 10 mph or greater is a

candidate for being an exceptional event (note that this discussion focuses on average winds,

not a wind gust which would be higher than the hourly average) in the context of 40 CFR

50.14(c)(3)(iv). However, for the sake of c onservatism Zephyr decided to focus only on days

with more than one hour of average wind speeds greater than 10 mph.

An examination of the meteorological data gathered at Hayden during the months of July

through November, inclusive, in 2008 (the months whose data are associated with all calculated

lead NAAQS exceedances as presented in the TSD) revealed that only three days had more

than one average hourly wind speed greater than 10 mph. Details on these days are presented

below (note that the plots show both average hourly winds as well as average 30-minute winds).

# R EVIEW OF 

# ADEQ’ S 

# TSD FOR 

# P ROPOSED 

# L EAD 

# NAAQS B OUNDARY 

# R ECOMMENDATION



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION 

# 10 

# 2.1.1 Dates Deemed to Have Exceptional Wind Speeds

2.1.1.1 August 5, 2008

On August 5, 2008 there were two hourly average wind speeds at

the Hayden monitor in excess of 10 mph. These two wind

speeds occurred at 7:00 PM and 8:00 PM (with the 6:00 PM wind

speed being 9.6 mph). Therefore, this day experienced a

concentrated period of exceptionally high winds in the evening.

More information concerning the winds of that day is presented in

the table to the right.

Figure 2-3

Hayden Monitor Average 30-Minute and Hourly Wind Speeds

August 5, 2008 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.01:00AM2:00AM3:00AM4:00AM5:00AM6:00AM7:00AM8:00AM9:00AM10:00AM11:00AM12:00PM1:00PM2:00PM3:00PM4:00PM5:00PM6:00PM7:00PM8:00PM9:00PM10:00PM11:00PM12:00AMWindSpeed(mph) 

# Wind Speed, Hayden, Arizona

August 5, 2008

30

‐ min Wspd

Hrly Wspd August 5, 2008 Wind Speed

Information

Maximum 30-min

Wind Speed 18.6 mph

Maximum Hourly

Wind Speed 16.1 mph

# R EVIEW OF 

# ADEQ’ S 

# TSD FOR 

# P ROPOSED 

# L EAD 

# NAAQS B OUNDARY 

# R ECOMMENDATION



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION 

# 11 

# 2.1.1.2 September 30, 2008

On September 30, 2008 there were five hourly average wind

speeds at the Hayden monitor in excess of 10 mph. These five

wind speeds occurred between 6:00 AM and 11:00 AM, with the

8:00 AM wind speed being just below 10 mph. Therefore, this

day experienced a concentrated period of exceptionally high

winds in the morning. More information concerning the winds of

that day is presented in the table to the right.

Figure 2-4

Hayden Monitor Average 30-Minute and Hourly Wind Speeds

September 30, 2008



# 2.1.1.3 October 22, 2008

On October 22, 2008 there were ten hourly average wind speeds

at the Hayden monitor in excess of 10 mph. Eight of these wind

speeds occurred between 10:00 AM and 5:00 PM (note the 9:00

AM wind speed was 9.9 mph), with the other two occurring at

11:00 PM and midnight. Therefore, this day experienced a

concentrated period of exceptionally high winds throughout a

substantial portion of the day. More information concerning the

winds of that day is presented in the table to the right. 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.01:00AM2:00AM3:00AM4:00AM5:00AM6:00AM7:00AM8:00AM9:00AM10:00AM11:00AM12:00PM1:00PM2:00PM3:00PM4:00PM5:00PM6:00PM7:00PM8:00PM9:00PM10:00PM11:00PM12:00AMWindSpeed(mph) 

# Wind Speed, Hayden, Arizona

September 30, 2008

30

‐ min Wspd

Hrly Wspd September 30, 2008 Wind

Speed Information

Maximum 30-min

Wind Speed 12.9 mph

Maximum Hourly

Wind Speed 12.3 mph

October 22, 2008 Wind Speed

Information

Maximum 30-min

Wind Speed 18.5 mph

Maximum Hourly

Wind Speed 18.1 mph

# R EVIEW OF 

# ADEQ’ S 

# TSD FOR 

# P ROPOSED 

# L EAD 

# NAAQS B OUNDARY 

# R ECOMMENDATION



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION 

# 12 

# Figure 2-5

Hayden Monitor Average 30-Minute and Hourly Wind Speeds

October 22, 2008



# 2.1.2 Impact of Removing Exceptional Events

As mentioned above, 40 CFR 50.14(b) states that if a monitored value is deemed to be caused

by an exceptional event that that value is not to be included in the determination of an

exceedance of the NAAQS. Accordingly, the three NAAQS exceedances identified in Table 4-1

of the ADEQ’s TSD were recalculated without the inclusion of data from the three days identified

above. The revised results are presented below. 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.01:00AM2:00AM3:00AM4:00AM5:00AM6:00AM7:00AM8:00AM9:00AM10:00AM11:00AM12:00PM1:00PM2:00PM3:00PM4:00PM5:00PM6:00PM7:00PM8:00PM9:00PM10:00PM11:00PM12:00AMWindSpeed(mph) 

# Wind Speed, Hayden, Arizona

October 22, 2008

30

‐ min Wspd

Hrly Wspd

# R EVIEW OF 

# ADEQ’ S 

# TSD FOR 

# P ROPOSED 

# L EAD 

# NAAQS B OUNDARY 

# R ECOMMENDATION



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION 

# 13 

# Table 2-1 Three-Month Rolling Average Lead Concentrations During Late 2008

Period Three-Month Rolling Average Lead Concentration (μg/m 3 

# )

Original a 

# Revised b



# July-September 2008 0.172 0.096

August-October 2008 0.184 0.079

September-November 2008 0.152 0.047

a) Calculated with data as presented in TSD.

b) Calculated with data as presented in TSD, with the exception of data for August 5,

September 30, and October 22 being removed.

As shown in the table above, the exclusion of data from these three days—days that according

to ADEQ guidance have exceptional wind speeds—results in no lead concentrations greater

than the NAAQS.



# 2.2 S UITABILITY OF 

# M ONITOR 

# L OCATION

The Hayden monitor has been placed on the roof of the maintenance building at the Town of

Hayden maintenance yard. The location of the maintenance yard is given in Figure 2-6, while

Figure 2-7 shows the placement of the monitor on the roof.

Figure 2-6

Location of Hayden Maintenance Yard

# R EVIEW OF 

# ADEQ’ S 

# TSD FOR 

# P ROPOSED 

# L EAD 

# NAAQS B OUNDARY 

# R ECOMMENDATION



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION 

# 14 

# Figure 2-7

View of Monitor on Roof of Town of Hayden Maintenance Building

(looking to the southeast)

Asarco spoke with Bob Larona, the Town of Hayden General Superintendent, to ascertain

whether there are any activities that take place at the maintenance yard that could affect

monitored lead concentrations at the roof of the maintenance building. Based on the

conversation there are activities conducted at the yard that could affect lead concentrations at

the roof. Those activities include soldering/welding (which could produce lead emissions) and

vehicular traffic (which could disturb particulates on the ground in and around the maintenance

building, leading to increased amounts of lead in the sampler). These activities occur

throughout the week, not just for isolated periods.

Given the activities at the maintenance yard and the frequency of those activities, the potential

exists for lead concentrations to be monitored at elevated levels that are not representative of

the overall area or an appropriately sited source-oriented monitor. If the goal of the Hayden

monitor is to support a designation, then an alternative location should be considered.

# R EVIEW OF 

# ADEQ’ S 

# TSD FOR 

# P ROPOSED 

# L EAD 

# NAAQS B OUNDARY 

# R ECOMMENDATION



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION 

# 15 

# 2.3 Q UALITY 

# A SSURANCE

40 CFR Part 58 Appendix A establishes quality assurance (QA) requirements for air monitoring

data collected for State and Local Air Monitoring Stations (SLAMS) network, Special Purpose

Monitoring (SPM), or for purposes of Prevention of

Significant Deterioration (PSD) permitting. While the

Hayden monitor apparently was not established under

any of these programs—it was established pursuant to

a remedial investigation in a CERCLA proceeding—

the data gathered at the Hayden monitor must

nonetheless meet the QA requirements of 40 CFR 58

Appendix A if they are to be used to define a

nonattainment area.

The QA requirements specified by 40 CFR 58

Appendix A are presented in Table 2-2.

Table 2-2 QA Requirements of 40 CFR 58 Appendix A

QA Requirement Citation Description

Quality System Requirements 40 CFR 58, Appendix A

Section 2 Prescribes a means to manage

quality of monitoring

information; includes Quality

Management Plan and Quality

Assurance Project Plan

Measurement Quality Check

Requirements 40 CFR 58, Appendix A

Section 3 Prescribes requirements for

performing measurement quality

checks to assess data quality;

includes quarterly audits of

sampling system

Calculations for Data Quality

Assessments 40 CFR 58, Appendix A

Section 4 Prescribes calculations for

assessing data quality; includes

precision estimate, bias

estimate, and flow rate

calculation

Reporting Requirements 40 CFR 58, Appendix A

Section 5 Prescribes reporting

requirements for SLAMS and

PSD monitoring

Appendix D of the TSD is labeled “ADEQ Memo Certifying Air Quality Data for the Hayden

Area” and contains an internal ADEQ memo prepared on August 13, 2009 from Jon Midgley to 

# ADEQ has not reviewed the

QA procedures/information

for the data it used to

propose a nonattainment

designation for lead

# R EVIEW OF 

# ADEQ’ S 

# TSD FOR 

# P ROPOSED 

# L EAD 

# NAAQS B OUNDARY 

# R ECOMMENDATION



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION 

# 16 

# Ira Domsky. That memo states that “(i)nformation about quality assurance checks performed on

the samplers is not available at this time.” 4



# Zephyr, accordingly, has not been able to review the QA procedures applicable and QA

information required to be generated for the Hayden monitor under 40 CFR Part 58 Appendix A.

Without the procedures/information, Zephyr cannot determine whether the data meet the QA

requirements, and neither can the ADEQ. The ADEQ should review the procedures and

information required under 40 CFR Part 58 Appendix A for the monitor, before it makes a

proposal to designate an area nonattainment based on data from the monitor.



# 2.4 D ATA 

# C OMPLETENESS 

# (V ALIDATION OF 

# T HREE 

# -M ONTH 

# M EANS 

# )

Section 4.1 of the TSD briefly discusses the three consecutive three-month means that are

greater than the lead NAAQS. The sampling dataset on which the three-month means

assessment is based spans data collected at the Hayden monitor from November 2007 through

November 2008. Table 2-3 gives the three-month means of interest.

Table 2-3 Three-month Means (Lead) Given in Table 4-1 of ADEQ Technical Support

Document

3-month Period 3-month Mean (μg/m 3 

# )

July, August, September 2008 0.172

August, September, October 2008 0.184

September, October, November 2008 0.152

According to 40 CFR 50, Appendix R Section 1(c), the design value upon which lead NAAQS

compliance is based is selected, according to procedures specified in Appendix R, from among

the valid three-month mean concentrations for the design value period. Validity of the threemonth mean is determined following procedures given in 40 CFR 50, Appendix R Section 4(c).

According to 40 CFR 50, Appendix R Section 4(c)(i), “A 3-month parameter mean is considered

valid (i.e., meets the completeness requirements) if the average capture rate of the three

constituent monthly means (i.e., the 3-month data capture rate) is greater than or equal to 75

percent.”

The first step in determining the validity of a three-month mean is to calculate the relevant

monthly capture rates. According to 40 CFR 50, Appendix R Section 4(c)(i),

Monthly data capture rates (expressed as a percentage) are specifically calculated as

the number of creditable samples for the month (including any make-up samples taken

the subsequent month for missed samples in the month in question, and excluding any

4 

# Several requests apparently have been made to the EPA and its contractor s for quality assurance

documentation. Asarco has not yet received c opies of any responses to those requests.

# R EVIEW OF 

# ADEQ’ S 

# TSD FOR 

# P ROPOSED 

# L EAD 

# NAAQS B OUNDARY 

# R ECOMMENDATION



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION 

# 17 

# make-up samples taken in the month in question for missed samples in the previous

month) divided by the number of scheduled samples for the month, the result then

multiplied by 100 but not rounded.

Creditable samples, according to 40 CFR 50, Appendix R Section 1(c), “...are samples that are

given credit for data completeness. They include valid samples collected on required sampling

days and valid ‘make-up’ samples taken for missed or invalidated samples on required sampling

days.”

To calculate the monthly data capture rate properly one must identify the required sampling

days in order to identify creditable samples (the number of which is the numerator of the

monthly capture rate) and to determine the number of scheduled samples (the denominator of

the monthly capture rate). Required sampling days are equivalent to scheduled sampling days.

According to 40 CFR 50, Appendix R Section 1(c), “Scheduled sampling day means a day on

which sampling is scheduled based on the required sampling frequency for the monitoring site,

as provided in section 58.12 of this chapter.” 40 CFR 58.12(b) provides “For Pb manual

methods, at least one 24-hour sample must be collected every 6 days except during periods or

seasons exempted by the Regional Administrator.” More importantly, 40 CFR 50, Appendix R

confirms this scheduled sampling frequency by explicitly specifying the every sixth day

frequency under Section 4(c)(i), that is, “For purposes of assessing data capture, Pb-TSP and

Pb-PM 10 

# data collected before January 1, 2009 will be treated with an assumed scheduled

sampling frequency of every sixth day.”

Since a specific list of scheduled sampling days was not available for the Hayden monitor, the

scheduled sampling days were determined by examining the monitoring data collected at the

Hayden monitor given in Appendix A of the TSD. Even though the focus of the validity

assessment is the three consecutive three-month periods near the end of 2008 (including the

months of July 2008 through November 2008, in clusive), Zephyr reviewed the entire monitoring

record (November 13, 2007 to November 30, 2008) as provided to establish patterns in

sampling and sampling frequency in order to identify scheduled sampling days. Table 2-4 is the

result of this review. The table indicates determined scheduled sampling days (double-lined,

bordered boxes). The table also indicates when moni tored samples were collected. Specifically,

the table indicates scheduled samples (red X ’s) and extra samples (blue X ’s). Sample

indicators with a light green filled background correspond to collected samples that were

invalidated or rejected by the monitoring contractor.REVIEW OFADEQ’STSDFORPROPOSEDLEADNAAQSBOUNDARYRECOMMENDATIONZEPHYRENVIRONMENTALCORPORATION18Table 2-4 Determined Scheduled Sample Days

# R EVIEW OF 

# ADEQ’ S 

# TSD FOR 

# P ROPOSED 

# L EAD 

# NAAQS B OUNDARY 

# R ECOMMENDATION



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION 

# 19 

# The process of determining the scheduled sampling days was as follows (also, see Table 2-4).

From the beginning of this dataset record through April 5, 2008 there is a clear, every sixth day

sampling pattern based on the actual dates of sample collection. The only exception to this

pattern is the three samples collected between March 14, 2008 and March 26, 2008, inclusive

(see black X ’s in Table 2-4). These three samples are collected every sixth day, but the

sampling does not fall into the regular scheduled pattern. Note that the Technical

Memorandum, which is Appendix A of the TSD, states that extra samples began to be collected

(three days after the scheduled samples) after March 28, 2008. However, extra sampling three

days after scheduled sampling was not apparent until April 2008. Then, around April 11/12,

2008 the actual sample collection seems to indicate a shift in sampling pattern, as the

scheduled pattern moves ahead by one day. This “new” pattern continues into early May 2008

(around May 6/7, 2008 based on an extra sample collected on May 10, 2008) when the actual

sample collection seems to indicate another shift in sampling pattern. Again, the scheduled

pattern moves ahead by one day. This “new” pattern continues until the end of the dataset

record. The only exception to this pattern is the samples collected in September 2008 through

early October 2008 (through October 12, 2008). These samples are collected every sixth day

but on a shifted schedule. However, because these samples are collected every sixth day with

no extra samples collected (during a period when extra samples also are supposed to be

collected three days after the scheduled sample), these actual samples are assumed to be

collected on scheduled sampling days.

During the period of interest of July 2008 through November 2008, there are seven scheduled

samples that are missing, and four scheduled samples that are invalid (i.e., rejected). In other

words only 56% [(25-11)/25] of the scheduled samples are available during this period. The

Technical Memorandum states that “...due to apparent power surging issues at the Hayden

station, 13 samples (October through December 2008) were not collected.” It goes on to state

that “...the resulting data set is considered sizable enough for evaluation purposes in this TM.”

However, this is a subjective opinion and did not include a strict data validation following the

procedures under 40 CFR 50, Appendix R Section 4(c).

40 CFR 50, Appendix R Section 4(c)(i) allows make-up samples to replace missed or

invalidated required scheduled samples. However, the dataset record does not indicate any

make-up samples were collected. Only extra samples are indicated. Extra samples, according

to 40 CFR 50, Appendix R section 1(c), “...are non-creditable samples. They are daily values

that do not occur on scheduled sampling days and that can not be used as ‘make-up samples’

for missed or invalidated scheduled samples.” Therefore, the creditable samples are the valid,

samples collected on the scheduled sampling days. Table 2-5 presents the number of

creditable samples, the number of scheduled samples and the calculated monthly data capture

rates (i.e., number of creditable samples divi ded by number of scheduled samples, multiplied by

100 but not rounded) for the months of July 2008 through November 2008.

# R EVIEW OF 

# ADEQ’ S 

# TSD FOR 

# P ROPOSED 

# L EAD 

# NAAQS B OUNDARY 

# R ECOMMENDATION



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION 

# 20 

# Table 2-5 Creditable Samples, Scheduled Sampling Days and Capture Rates by

Month

Month No. of Creditable

Samples No. of Scheduled

Samples Capture Rate

(%)

July 2008 4 5 80

August 2008 3 5 60

September 2008 4 5 80

October 2008 2 5 40

November 2008 1 5 20

Table 2-6 presents the three-month data capture rates for the time periods of interest.

Table 2-6 Three-Month Data Capture Rates by Time Period

Time Period 3-month Capture Rate (%)

July, August, September 2008 73

August, September, October 2008 60

September, October, November 2008 47

According to 40 CFR 50, Appendix R Section 4(c)(i), “The three-month data capture rate is the

sum of the three corresponding unrounded monthly data capture rates divided by three (3) and

the result rounded to the nearest integer (zero decimal places).” As an example, the calculated

three-month data capture rate for the July, August,

September 2008 period is 73% or [(80+60+80)/3].

Because the three-month data capture rates are less

than 75%, the corresponding three-month lead means

(see Table 2-3) are considered not valid (i.e., they do

not meet the data completeness requirements of 40

CFR 50, Appendix R Section 4(c)(i).

However, according to 40 CFR 50, Appendix R Section 4(c)(ii), “A 3-month parameter mean

that does not have at least 75 percent data capture and thus is not considered valid under

4(c)(i) shall be considered valid (and complete) if it passes either of the two following ‘data

substitution’ tests, one such test for validating an above NAAQS-level (i.e., violating) 3-month

Pb-TSP or Pb-PM 10 

# mean (using actual ‘low’ reported values from the same site at about the

same time of the year (i.e., in the same month) looking across three or four years),...”

The three-month means of interest are above the NAAQS level. Therefore, the “data

substitution” test of interest is the above NAAQS-level test. The above NAAQS-level test,

according to 40 CFR 50, Appendix R Section 4(c)(ii), is as follows:

Data substitution will be done in each month of the 3-month period that has less than 75

percent data capture; monthly capture rates are temporarily rounded to integers (zero 

# The 3

­ month capture rates

are below the 75%

completeness threshold.

# R EVIEW OF 

# ADEQ’ S 

# TSD FOR 

# P ROPOSED 

# L EAD 

# NAAQS B OUNDARY 

# R ECOMMENDATION



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION 

# 21 

# decimals) for this evaluation. If by substituting the lowest reported daily value for that

month (year non-specific; e.g., for January) over the 38-month design value period in

question for missing scheduled data in the deficient months (substituting only enough to

meet the 75 percent data capture minimum), the computation yields a recalculated test

3-month parameter mean concentration above the level of the standard, then the 3-

month period is deemed to have passed the diagnostic test and the level of the standard

is deemed to be exceeded in that 3-month period.

Following the above NAAQS-level diagnostic test would require substitution of one missing

sample in August 2008, two missing/invalid samples in October 2008 and five missing/invalid

samples in November 2008. All reported monitoring data at the Hayden Monitoring Station

(starting October 22, 2006) through the end of 2008 were reviewed to identify the lowest

reported daily values for the months of interest. According to 40 CFR 50, Appendix R Section

4(c )(ii), “..substitution is permitted only if there are available data points from which to identify

the high or low 3-year month-specific values, spec ifically if there are at least 10 data points from

at least two of the three (or four for November and December) possible year-months.” This

criterion is met for the months of August and November, but not for the month of October. Only

7 data points from two of the three possible year-months (5 reported values in October 2007

and 2 reported values in October 2008) are available. Therefore, the substitution is not

permitted for the month of October, and, thus, the diagnostic test cannot be performed for the

August, September, October 2008 and September, October, November 2008 time periods. For

these time periods the data completeness requirements (at least 75% data capture) are not met

and the three-month means are considered not valid.

The data substitution diagnostic test was performed for the July, August, September 2008 time

period. One missing scheduled data for August 2008 was substituted with the lowest reported

value for the month of August. The lowest reported lead value for the month of August is

0.0142 μg/m 3 

# collected on August 6, 2007. The recalculated July, August, September 2008 test

three-month mean is 0.166 μg/m 3 

# [(0.0718 + 0.1387 + 0.2884)/3]. This value is above the level

of the lead standard, thus the three-month period is deemed to have passed the diagnostic test.



# 2.5 U NCERTAINTY 

# R EGARDING 

# D ESIGN 

# V ALUE

As defined in 40 CFR 50, Appendix R, the Design

Value is the concentration “...that is compared to the

NAAQS level to determine compliance; the design

value for the Pb NAAQS is selected...from among the

valid three-month (lead) arithmetic mean

concentration(s)...” In practice it is the highest of the

rolling three-month averages that are calculated.

The TSD does not contain a discussion of the Design

Value. A discussion of concentrations greater than the

NAAQS is contained in Section 4.1 of the TSD; in that section it refers to Appendix A of the TSD 

# The Design Value should be

clearly defined before

proposing to classify an area

as nonattainment.

# R EVIEW OF 

# ADEQ’ S 

# TSD FOR 

# P ROPOSED 

# L EAD 

# NAAQS B OUNDARY 

# R ECOMMENDATION



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION 

# 22 

# for more details pertaining to the monitoring results that confirm the Hayden area is in

nonattainment for lead.

Appendix A of the TSD is labeled as “EPA’s Air Quality Study of the Hayden Area,” and consists

of a Technical Memorandum prepared on December 31, 2008 from CH2M Hill to John

Hillenbrand of EPA. The Technical Memorandum includes a summary of monitoring conducted

at Hayden and provides tables of all monitoring results (pollutant and meteorological) on a daily

basis (Table 1 in Appendix A of the TSD contains the Hayden information).

Following these detailed tables there is an individual page that presents a Design Value of 0.21

μg/m 3 

# for lead for the Hayden monitor for the period 2006-2008. However, there is no

explanation as to the derivation of this value; furthermore, a close inspection reveals that the

data presented in Appendix A of the TSD do not support the 0.21 μg/m 3 

# value.

Zephyr looked into this discrepancy further and ascertained that the Design Value of 0.21 μg/m 3



# may be based on data provided in electronic format by John Hillenbrand of EPA to Jack Garrity

of Asarco on September 23, 2009 (these data are presented in the spreadsheet in Appendix A

of this report). It is not clear the spreadsheet data have been vetted for exceptional events,

quality assurance and data completeness.

It is unclear, therefore, which, if any, dataset is appropriate to use. While the ADEQ apparently

makes its proposal based on the data in Appendix A of the TSD, the TSD’s sole actual

reference to a Design Value may rely on a completely different set of data which may or may

not have undergone validation under the rules. The ADEQ should clearly establish and validate

the Design Value for comparison to the NAAQS. Without a clearly established and properly

validated Design Value a designation of nonattainment is not justified.

# R EVIEW OF 

# ADEQ’ S 

# TSD FOR 

# P ROPOSED 

# L EAD 

# NAAQS B OUNDARY 

# R ECOMMENDATION



# Z EPHYR 

# E NVIRONMENTAL 

# C ORPORATION 

# 23 

# APPENDIX A

HAYDEN AIR QUALITY MONITORING DATA

RECEIVED FROM EPA ON SEPTEMBER 23, 2009

# Result Qualifier NAAQS



# Hayden 10/22/06 μg/m 3 

# 0.0024 * 0.15

Hayden 11/03/06 μg/m 3 

# 0.0266 0.15

Hayden 11/09/06 μg/m 3 

# 0.0141 0.15

Hayden 11/11/06 μg/m 3 

# 0.044 0.15

Hayden 11/21/06 μg/m 3 

# 0.5947 0.15

Hayden 11/27/06 μg/m 3 

# 0.0191 0.15

Hayden 12/03/06 μg/m 3 

# 0.1595 0.15

Hayden 12/09/06 μg/m 3



# Hayden 12/15/06 μg/m 3 

# 0.0329 J 0.15

Hayden 12/21/06 μg/m 3 

# 0.0027 * 0.15

Hayden 12/27/06 μg/m 3 

# 0.0143 0.15

Average 0.0834



# Hayden 01/08/07 μg/m 3 

# 0.47 0.15

Hayden 01/14/07 μg/m 3 

# 0.0167 0.15

Hayden 01/20/07 μg/m 3 

# 0.0043 0.15

Hayden 01/26/07 μg/m 3 

# 0.0099 0.15

Hayden 02/01/07 μg/m 3 

# 0.005 0.15

Hayden 02/07/07 μg/m 3 

# 0.0103 0.15

Hayden 02/13/07 μg/m 3 

# 0.037 0.15

Hayden 02/19/07 μg/m 3 

# 0.0173 0.15

Hayden 02/25/07 μg/m 3 

# 0.0105 0.15

Hayden 03/03/07 μg/m 3 

# 0.1444 0.15

Hayden 03/09/07 μg/m 3 

# R R 0.15

Hayden 03/15/07 μg/m 3 

# 0.032 0.15

Hayden 03/21/07 μg/m 3 

# 0.0885 0.15

Hayden 03/27/07 μg/m 3 

# 0.0227 0.15

Hayden 04/02/07 μg/m 3 

# 0.028 0.15

Hayden 04/20/07 μg/m 3 

# 0.0122 0.15

Hayden 04/26/07 μg/m 3 

# 0.0324 0.15

Hayden 05/02/07 μg/m 3 

# R R 0.15

Hayden 05/08/07 μg/m 3 

# 0.0774 0.15

Hayden 05/14/07 μg/m 3 

# 0.0257 0.15

Hayden 05/20/07 μg/m 3 

# 0.0127 0.15

Hayden 05/26/07 μg/m 3 

# 0.0253 0.15

Hayden 06/01/07 μg/m 3 

# 0.046 0.15

Hayden 06/07/07 μg/m 3 

# 0.0048 0.15

Hayden 06/13/07 μg/m 3 

# 0.0238 0.15

Hayden 06/19/07 μg/m 3 

# 0.0298 0.15

Hayden 06/25/07 μg/m 3 

# 0.0299 0.15

Hayden 07/01/07 μg/m 3 

# 0.0382 0.15

Hayden 07/07/07 μg/m 3 

# R R 0.15

Hayden 07/13/07 μg/m 3 

# 0.021 0.15

Hayden 07/19/07 μg/m 3 

# 0.0986 0.15

Hayden 07/25/07 μg/m 3 

# 0.0136 0.15

Hayden 07/31/07 μg/m 3 

# 0.0208 0.15

Hayden 08/06/07 μg/m 3 

# 0.0142 0.15 Lead



# Location Sample



# Date Units

Page 1 of 4

# Result Qualifier NAAQS Lead



# Location Sample



# Date Units

Hayden 08/12/07 μg/m 3 

# 0.0268 0.15

Hayden 08/18/07 μg/m 3 

# 0.0429 0.15

Hayden 08/24/07 μg/m 3 

# 0.0182 0.15

Hayden 08/30/07 μg/m 3 

# 0.517 0.15

Hayden 09/05/07 μg/m 3 

# 0.0294 0.15

Hayden 09/11/07 μg/m 3 

# 0.8362 0.15

Hayden 09/17/07 μg/m 3 

# 0.0803 0.15

Hayden 09/23/07 μg/m 3 

# 0.0033 0.15

Hayden 09/29/07 μg/m 3 

# 0.0273 0.15

Hayden 10/05/07 μg/m 3 

# 0.0035 0.15

Hayden 10/11/07 μg/m 3 

# 0.046 0.15

Hayden 10/17/07 μg/m 3 

# 0.0194 0.15

Hayden 10/22/07 μg/m 3 

# 0.5156 0.15

Hayden 10/27/07 μg/m 3 

# 0.0242 0.15

Hayden 11/01/07 μg/m 3 

# 0.0202 0.15

Hayden 11/07/07 μg/m 3 

# 0.3183 0.15

Hayden 11/13/07 μg/m 3 

# 0.0049 0.15

Hayden 11/19/07 μg/m 3 

# 0.042 0.15

Hayden 11/25/07 μg/m 3 

# 0.0538 0.15

Hayden 12/07/07 μg/m 3 

# 0.2119 0.15

Hayden 12/13/07 μg/m 3 

# 0.0944 0.15

Average 0.0838



# Hayden 01/12/08 μg/m 3 

# 0.1487 0.15

Hayden 01/18/08 μg/m 3 

# 0.0613 0.15

Hayden 02/17/08 μg/m 3 

# 0.0291 0.15

Hayden 02/23/08 μg/m 3 

# 0.0081 0.15

Hayden 02/29/08 μg/m 3 

# 0.0764 0.15

Hayden 03/06/08 μg/m 3 

# 0.0697 0.15

Hayden 03/12/08 μg/m 3 

# R R 0.15

Hayden 03/14/08 μg/m 3 

# 0.064 0.15

Hayden 03/20/08 μg/m 3 

# 0.0152 0.15

Hayden 03/26/08 μg/m 3 

# 0.0125 0.15

Hayden 03/30/08 μg/m 3 

# 0.0024 * 0.15

Hayden 04/05/08 μg/m 3 

# 0.0305 0.15

Hayden 04/12/08 μg/m 3 

# 0.4627 0.15

Hayden 04/15/08 μg/m 3 

# 0.059 0.15

Hayden 04/18/08 μg/m 3 

# 0.1272 0.15

Hayden 04/21/08 μg/m 3 

# 0.0299 0.15

Hayden 04/24/08 μg/m 3 

# 0.0097 0.15

Hayden 05/10/08 μg/m 3 

# 0.022 0.15

Hayden 05/13/08 μg/m 3 

# 0.1163 0.15

Hayden 05/16/08 μg/m 3 

# 0.288 0.15

Hayden 05/19/08 μg/m 3 

# 0.0236 0.15

Hayden 05/22/08 μg/m 3 

# 0.0166 0.15

Hayden 05/28/08 μg/m 3 

# 0.0361 0.15

Hayden 05/31/08 μg/m 3 

# 0.028 0.15

Page 2 of 4

# Result Qualifier NAAQS Lead



# Location Sample



# Date Units

Hayden 06/03/08 μg/m 3 

# 0.0547 0.15

Hayden 06/06/08 μg/m 3 

# 0.0185 0.15

Hayden 06/09/08 μg/m 3 

# 0.0843 0.15

Hayden 06/12/08 μg/m 3 

# 0.0746 0.15

Hayden 06/15/08 μg/m 3 

# 0.1255 0.15

Hayden 06/18/08 μg/m 3 

# 0.033 0.15

Hayden 06/21/08 μg/m 3 

# 0.1123 0.15

Hayden 07/09/08 μg/m 3 

# 0.3432 0.15

Hayden 07/12/08 μg/m 3 

# 0.0062 0.15

Hayden 07/15/08 μg/m 3 

# 0.0191 0.15

Hayden 07/18/08 μg/m 3 

# 0.047 0.15

Hayden 07/21/08 μg/m 3 

# 0.0205 0.15

Hayden 07/24/08 μg/m 3 

# 0.0731 0.15

Hayden 07/27/08 μg/m 3 

# 0.0011 0.15

Hayden 07/30/08 μg/m 3 

# 0.0132 0.15

Hayden 08/02/08 μg/m 3 

# 0.0347 0.15

Hayden 08/05/08 μg/m 3 

# 0.1629 0.15

Hayden 08/08/08 μg/m 3 

# 0.457 0.15

Hayden 08/11/08 μg/m 3 

# 0.0417 0.15

Hayden 08/14/08 μg/m 3 

# 0.1646 0.15

Hayden 08/17/08 μg/m 3 

# 0.1981 0.15

Hayden 08/20/08 μg/m 3 

# 0.0363 0.15

Hayden 09/12/08 μg/m 3 

# 0.0136 0.15

Hayden 09/18/08 μg/m 3 

# 0.0462 0.15

Hayden 09/24/08 μg/m 3 

# 0.1263 0.15

Hayden 09/30/08 μg/m 3 

# 0.9676 0.15

Hayden 10/06/08 μg/m 3 

# 0.02 0.15

Hayden 10/12/08 μg/m 3 

# 0.0234 0.15

Hayden 10/22/08 μg/m 3 

# 0.1968 0.15

Hayden 10/25/08 μg/m 3 

# 0.042 0.15

Hayden 10/28/08 μg/m 3 

# 0.3002 0.15

Hayden 11/09/08 μg/m 3 

# 0.0887 0.15

Hayden 11/12/08 μg/m 3 

# 0.0071 0.15

Hayden 11/21/08 μg/m 3 

# 0.984 0.15

Hayden 11/24/08 μg/m 3 

# 0.111 0.15

Hayden 11/27/08 μg/m 3 

# 0.1731 0.15

Hayden 11/30/08 μg/m 3 

# 0.0328 0.15

Hayden 12/06/08 μg/m 3 

# 0.0113 0.15

Hayden 12/12/08 μg/m 3 

# 0.1094 0.15

Hayden 12/15/08 μg/m 3 

# 0.1166 0.15

Hayden 12/27/08 μg/m 3 

# 0.0944 0.15

Hayden 12/30/08 μg/m 3 

# 0.0115 0.15

Average 0.1128



# Hayden 01/02/09 μg/m 3 

# 0.0174 0.15

Hayden 01/19/09 μg/m 3 

# 0.1583 0.15

Hayden 02/01/09 μg/m 3 

# 0.1483 0.15

Page 3 of 4

# Result Qualifier NAAQS Lead



# Location Sample



# Date Units

Hayden 02/04/09 μg/m 3 

# 0.9647 0.15

Hayden 02/06/09 μg/m 3 

# 0.0433 0.15

Hayden 02/12/09 μg/m 3 

# 0.0109 0.15

02/18/09



# Hayden 02/20/09 μg/m 3 

# 0.0567 0.15

02/24/09



# Hayden 02/26/09 μg/m 3 

# 0.1353 0.15

03/02/09



# Hayden 03/04/09 μg/m 3 

# 0.0253 0.15

03/08/09



# Hayden 03/10/09 μg/m 3 

# 0.1507 0.15

Hayden 03/13/09 μg/m 3 

# 0.0706 0.15

03/14/09



# Hayden 03/19/09 μg/m 3 

# 0.0937 0.15

03/20/09



# Hayden 03/26/09 μg/m 3 

# 0.0807 0.15

Hayden 04/01/09 μg/m 3 

# 0.1023 0.15

Hayden 04/07/09 μg/m 3 

# 0.4633 0.15

Hayden 04/13/09 μg/m 3 

# 0.0174 0.15

Hayden 04/19/09 μg/m 3 

# 0.0455 0.15

Hayden 04/25/09 μg/m 3 

# 0.0226 0.15

Hayden 05/01/09 μg/m 3 

# 0.0645 0.15

Hayden 05/07/09 μg/m 3 

# 0.0299 0.15

Hayden 05/13/09 μg/m 3 

# 0.0913 0.15

Hayden 05/19/09 μg/m 3 

# 0.0249 0.15

Hayden 05/25/09 μg/m 3 

# 0.0050 0.15

Hayden 05/31/09 μg/m 3 

# 0.0056 0.15

Hayden 06/06/09 μg/m 3 

# 0.0040 0.15

Hayden 06/12/09 μg/m 3 

# 0.0039 0.15

Hayden 06/18/09 μg/m 3 

# 0.0083 0.15

Hayden 06/24/09 μg/m 3 

# 0.0102 0.15

Average 0.1020

Maximum 0.9647

* = The result is less than three times the level of uncertainty.

J = Estimated value

NA = Not available

R = Rejected due to filter damage

Page 4 of 4

# 1 

# Appendix G

ADEQ’s Response to the Zephyr Report

# This page is intentionally blank.

# Response to ASARCO Consultant Zeph yr Environmental Corporation Report

Review of Arizona Department Of Environm ental Quality’s Technical Support Document

for The Department’s Proposed Boundary Recommendation

for the 2008 Revision of the NAAQS for Lead (November 10, 2009)

December 9, 2009 ∗



# Zephyr Environmental Corporation (ZEC) raised the following issues regarding the technical basis of the

recommended nonattainment area designation for the Hayden-Winkelman area:

“ ...

• Some of the monitored lead values relied upon in the TSD are associated with

“exceptional events” under 40 CFR Part 50 and ADEQ guidance and should therefore

not be counted toward determining whether the Hayden area is in nonattainment of the

NAAQS for lead. When these “exceptional events” values are excluded there are no

monitored values above the NAAQS.

• The Hayden monitor is located on top of th e Town of Hayden maintenance building.

Given the soldering/welding activities and vehicle traffic that take place at the

maintenance yard, the potential exists for contamination of the samples obtained using

the monitor.

• The Quality Assurance (QA) plan governing the Hayden monitor and the results of the

various tests and calibrations required u nder the quality assurance rules governing

ambient air monitors were not available at th e time of Zephyr’s review. As of the date

of the TSD, the ADEQ had not reviewed in formation on the required quality assurance

checks of the Hayden monitor, and it remain s uncertain whether such checks occurred.

This calls into question the validity of the data generated using the monitor.

• In support of the ADEQ’s proposal, the TSD (at Table 4-1) compares 3-month means

to the NAAQS. However, the TSD does not demonstrate the ADEQ validated the 3-

month means according to 40 CFR Part 50, Appendix R Section 4(c) procedures. If

these procedures were followed, it would be found that all the 3-month means above

the lead NAAQS do not meet the specific 75% data completeness requirement.

• The Design Value (i.e., the single mean concentration that is required under the rules to

be compared to the NAAQS to demonstrate attainment or nonattainment) was not

clearly identified or adequately discussed in the TSD.”

Each of these concerns will be addressed in turn.

Exceptional Events

ZEC prepared an analysis of rolling 3-month average wind speeds as part of the basis for claiming that the

violations of the lead (Pb) National Ambient Ai r Quality Standard (NAAQS) were the results of

exceptional events under the EPA exceptional events rule, 40 CFR 50.14. The claim is premised on an

October 15, 2009, guidance document and analysis prepared by ADEQ to document “unusual winds” and

their impact on ambient PM 10 

# concentrations. In addition, they presented wind data for 3 different days

where exceedances of the Pb NAAQS were measured a nd a generic assessment of the impact that wind

has on hourly PM 10 

# concentrations. While there may be some substance to their analysis, it was cursory

and did not follow the requirements of either EPA ru le or ADEQ’s technical criteria for demonstrating

that the wind events were the cause of the exceedances, were beyond normal historical fluctuations, and

that the exceedances would not have occurred w ithout the event (their paraphrasing of 40 CFR

50.14(c)(3)(iv)). Their argument revolves solely around the statement in the ADEQ document that

“blowing dust can occur ... with hourly averaged wi nd speeds that are above 10 miles per hour.” These

∗ 

# This document is the substantially th e same as the December 3, 2009 versio n, excepting that minor revisions were

made to pp. 7 and 8 in the Appendix.

# Response to Zephyr Report on Pb Nonattainment Page 2

December 9, 2009 demonstrations are inadequate to document and justify that the events were exceptional and should be

excluded from the record for demonstr ating compliance with the Pb NAAQS:

• The quotation from the ADEQ document was taken out of context with the full discussion of

unusual winds with relation to blowing dust. While an hourly average of 10 mph is a demonstrated

threshold for blowing dust, and al so is unusual from the standpoint that it occurs less than 5% of

the time, it is not necessarily an appropriate th reshold for an exceptional event. ADEQ has and

continues to base its demonstrations for excepti onal events using maximum winds rather than

hourly averages, unless it can be shown that the hourly average winds exceed 15 mph for 3 or more

consecutive hours (See “Technical Criteria Document for Determination of Natural Exceptional

Events For Particulate Matter Equal to or Less Than Ten Microns in Aerodynamic Diameter

(PM10), May 31, 2000", available at www.azdeq.gov/environ/air/monitoring/monitor.html ).

• PM 10 

# and Pb 24-hour average concentrations for the three Pb exceedance days addressed by ZEC

were reported as follows:

PM 10 

# Conc.

( μ g/m 3 

# ) Pb Conc.

( μ g/m 3 

# )

August 5, 2008 32.2 0.163

September 30, 2008 56.8 0.968

October 22, 2008 48.7 0.197

Because these PM 10 

# concentrations are well below the PM 10 

# NAAQS of 150 μ g/m 3 

# , it does not

appear that these Pb exceedances are asso ciated with significant blowing dust.

• No causal relationship between the winds for these days and Pb concentrations was presented by

ZEC.

• The ADEQ Technical Criteria Document for A ssessment of Natural and Exceptional Events

requires an analysis consisting of the followi ng issues be prepared for an exceptional event

demonstration:

1. Properly qualify and validate the air quality measurement to be flagged.

2. Review suspected contributing sources

3. Examine all air quality monitoring information.

4. Examine the meteorological conditions before and during the event

5. Perform a qualitative attribution to emission source(s).

6. Estimation of contribution from source or event.

7. Determination that a natural or exceptiona l event contributed to an exceedance.

• In addition the requirement for an assessment re port, the EPA Exceptional Events Rule requires

that the demonstration also address the following specific components before concurrence by EPA

can be expected:

• There is a clear causal relationship between the event and the ambient concentration

being flagged (40 CFR 51)

• The event is associated with measured con centrations in excess of normal historical

fluctuations, including background as required in 40 CFR 50.14(c)(3)(iii)(C)

• There is a direct linkage between the measurements to be flagged and the event as

required in 40 CFR 50.14(c)(3)(iii)(B)

• There would have been no exceedances or viola tions but for the event as required in 40

CFR 50.14(c)(3)(iii)(D)

• All appropriate State Implementation Plan (SIP) control measures were in place during

the event, demonstrating that the event “is not reasonably controllable or preventable” as

required in 40 CFR 50.1(j)

• The event affects air quality as required in 40 CFR 50.1(j)

# Response to Zephyr Report on Pb Nonattainment Page 3

December 9, 2009 • The finalized document and any comments receive d were submitted to EPA to satisfy the

requirements for public participation required in 40 CFR 50.14(c)(3)(i)

• The forecasts/advisories requirement was satisfi ed as described in 40 CFR 51.930(a)(1).

ADEQ has evaluated these claims more closely using all the criteria listed above and does not find that

ambient lead measurements were affected by excep tional events on any of the days identified in the

comments.

Suitability of Monitor Location

ZEC makes the claim that activities in and near th e Town of Hayden Maintenance Yard are probable

sources of Pb, either from welding and soldering at the Yard or from fugitive dust reintrained by traffic in

and near the Yard. Two factors readily available in the data that ASARCO has had in their possession

beginning in October 2007 countermand this claim:

• ZEC provides no documentation on the frequency or intensity of potential Pb emitting activities at

or near the site.

• On only one day when the Pb NAAQS was exceeded does there appear to be evidence of a large

amount of reintrained or windblown dust at this m onitor. All but 5 of the 24 Pb exceedance days

had PM 10 

# concentrations greater than 50 μ g/m 3 

# , but on only one day was the PM 10 

# concentration

greater than 70 μ g/m 3 

# . On that one day, PM 10 

# was barely above two-thirds of the NAAQS, at 100.3

μ g/m 3 

# . The PM 10 

# NAAQS is set at a 24-hour average of 150 μ g/m 3



# .

• Figure 1 (below) demonstrates there is a very st rong correlation between Pb and both arsenic (As)

and copper (Cu) concentrations. Neither of these elements are associated with welding and

soldering, and all three elements – Pb, As and Cu – are associated with copper smelter operations.

Because the Maintenance Yard is in an area where the public has ready access and can breathe the air, it

is very well suited to measure population e xposure to air contaminants, including Pb.

# Response to Zephyr Report on Pb Nonattainment Page 4

December 9, 2009 Figure 1



# Scatterplot of Pb with As and Cu

Hayden Maint. Yard Monitor, Nov. 2006 thru June 2009

y = 4.0615x + 0.1859

R 2 

# = 0.737

y = 0.2224x

R 2 

# = 0.8396

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

0.00 0.10 0.20 0.30 0.40 0. 50 0.60 0.70 0.80 0.90 1.00

Pb Concentration (ug/m3)Cu Concentration (ug/m3)



# 0 0.03 0.06 0.09 0.12 0.15 0.18 0.21 0.24As Concentration (ug/m3)



# Pb v. Cu Pb v. As Pb v. Cu Regression Pb v. As Regression



# Proper Quality Assurance Was not Verified by ADEQ

All ambient air monitoring was conducted following the EPA approved Quality Assurance Project Plan

(QAPP) written by CH2M Hill in November 2005. Th e QAPP, “Final Quality Assurance Project Plan,

Asarco LLC Hayden Plant Site, Re medial Investigation, Gila Coun ty, AZ”, was amended in March 2009

when Innovative Technical Solutions, Inc. (ITSI) w as assigned the project by EPA Region 9. ITSI also

amended the Field Sampling Plan (FSP) written by CH2M Hill in November 2005. Since John

Hillenbrand, the EPA Region 9 Superfund project offi cer, transmitted the data to Jack Garrity of

ASARCO on a regular basis beginning in October 20 07, ASARCO had ample opportunity to acquire the

QAPP and all its revisions.

ADEQ did review the QAPP prior to making the decision to use these data for determining the attainment

status of the Hayden area. The QAPP follows EPA guidelines contained in EPA Guidance for Quality

Assurance Project Plans (EPA, 2002) and EPA Require ments for Quality Assurance Project Plans (EPA,

2001). Thus, the following section headings correla te with the subtitles found in the EPA guidelines

(EPA, 2002). It contains the procedures to be fo llowed for sample collection, analysis, and data

management. All sample analysis was performed by the EPA Region 9 laboratory. All quality control

checks on samplers followed EPA 40 CFR 58 requireme nts. Communication from the ITSI consultant

indicates that all documentation (field checks, log books, and laboratory reports) were reviewed by either

CH2M Hill (2006-Feb, 2009) or ITSI (Feb 2009 and continuing) during instru ment operation and data

validation, and will be posted on the consultant's FTP Website.

Specific descriptions of the air quality monitoring equipment and the required quality control checks are

presented in Section 6 of the FSP. Air quality sampli ng at the two field locations began in November

2006.

The QAPP and FSP were in compliance with all EPA requirements, and personal communications with

EPA staff and its contractors provided assurance that th e procedures in the QAPP were strictly followed.

# Response to Zephyr Report on Pb Nonattainment Page 5

December 9, 2009 Further, EPA assessed the quality these data relativ e to compliance with the QAPP, FSP and their

regulations, and concluded that the data were suitable for entr y into the national data base.

At the request of the Governor’s Office, elected officials and ASARCO, AQD staff conducted a detailed

review of the QA/QC records for each data point for the July through November 2008 time period. Their

conclusions are as follows:

1. A QAPP was submitted to EPA in November 2005, pr ior to the start of sampling in October 2006.

This complies with the EPA requirement for ai r monitoring programs to have an approved QAPP

prior to the start of sampling.

2. Addendums to the QAPP documents were made by the new consultant (ITSI) in March 2009.

3. Instrument checks were performed as described in the Field Sampling Plan. Copies of the checks

are available from ITSI.

4. Laboratory reports contained chain of custod y information, transmittal information, and

laboratory quality control data along with the analytical results.

5. ADEQ's review of the above information conc ludes the lead data provided by Region 9

Superfund has experienced at least 3 levels of va lidation (sampler field checks and verification of

sample validity immediately after collection, la boratory analysis and quality control checks of

laboratory procedures) and review by EPA Superfu nd staff. These procedures are comparable to

the procedures followed by ADEQ Air Assessment staff.

6. The preliminary report by CH2M Hill omitted several sample results that were included in the

EPA spreadsheet. CH2M Hill footnotes do not in dicate why those samples were omitted but do

state that additional validation and QA/QC could change the results included in the report.

ADEQ review of all the QA/QC documentation supp orts EPA’s determination that the samples

and the data generated from those samples were valid.

7. All violations of the 2008 Pb NAAQS calculat ed by ADEQ and included in the recommendation

to designate the Hayden area as nona ttainment are accurate and valid.

3-month Means and Design Values

The ADEQ TSD Table 4-1 lists three exceedances of the NAAQS in 2008 at the Hayden Town

Maintenance Building. These averages were in th e CH2M Hill report prepared for EPA in December

2008, “Preliminary Evaluation of PM10 and Metals Concentrations from October 2007 to December

2008 in ambient Air at the Hayden and Winkelman Monitoring Stations.” The report includes an

appendix of tables of all analytical results from th e samples CH2M Hill considered valid. Samples are

from the period November 13, 2007 through November 30, 2008. Footnote 28 of each table states, "This

table should be considered prelimin ary and will be revised based on in coming data, final data validation

and QA/QC."

Three-month Means and Design Values were calculated using the larger quality assured data set provided

by the EPA Superfund project manager, John Hillenbra nd, who also transmitted the same spreadsheets to

Jack Garrity of ASARCO. These data include valid ated samples from October 22, 2006, through

December 30, 2008. These data were reported to the EPA Air Quality System (AQS) by the September 1,

2009 deadline listed in the CFR. Since EPA owns the data, EPA Region 9 is listed as the Primary Quality

Assurance Organization (PQAO), collecting agency, and analyzing agency. ADEQ is listed only as the

reporting agency, which is a function that ADEQ performs in its regular course of business.

Design Values were calculated for both the Winkelm an and Hayden sites from the October 22, 2006,

through December 30, 2008, data and included in th e 'Tables' appendix of the TSD. These values were

calculated following 40 CFR 50 Appendix R requireme nts. Several 3-month periods had less than 75%

data capture requiring data substitution tests to be performed as described in Appendix R Section 4(ii).

The result of the data substitution test is a 'test mean ' and is not considered the actual 3-month parameters

mean and is not used in the calculation of the design value. It confirms the likelihood that the original

mean (with less than 75% data capture) reflects th e true over/under NAAQS status. ADEQ’s calculations

# Response to Zephyr Report on Pb Nonattainment Page 6

December 9, 2009 and determinations regardi ng data capture and validity of averages ar e attached to this document, and will

be included in the TSD.

• ZEC included the full EPA data set for Hayden (lead only) in the appendix of the document, but

discussed only the CH2M Hill document and results in their report. CH2M Hill's report gave EPA

an early look at the preliminary results of the field sampling. The validated data set from EPA

includes samples that CH2M Hill rejected.

• ADEQ used the EPA dataset to perform the data capture and concentration calculations, thus

resulting in some differences from the ZEC findings. However, ZEC does not show all

calculations for the CH2M Hill data (i.e., all 3 month averages and data completeness statistics)

and it is unclear whether or not they used the extr a samples in their calcula tions. Even if the only

3-month average retained is the July-Aug-Sept 20 08 average (as they maintain), our calculations

show it has a concentration of 0.17 ug/m 3 

# , meaning the monitor is in violation. ADEQ’s method

for calculating the averages for calendar year 2008 and using data substitu tion as outlined in 40

CFR 50 Appendix R may be found in Appendix A of this document.

The Design Value Was not Adequately Discussed

ADEQ agrees with the comment rega rding this issue and will make corresponding changes to the TSD to

include the full data set relied upon and a discussi on of the design value and how it was derived.

# Response to Zephyr Report on Pb Nonattainment Page 7

December 9, 2009 

# Appendix A

3-Month Average Lead Con centration Calculations

For the Hayden Maintenance Yard Monitor for Calendar Year 2008

2008 Monthy/3-Month Summary – Pb-PM10 Standard Conditions

Invalid 3-month average due to data capture

Invalid 3-month average due to data capture and insufficient number of samples.

Month No. of

Possible

Samples No. of

Creditable

Samples Monthly

Data

Capture

(%) No. of

Extra

Samples Monthly

Average

Lead

(μg/m 3 

# ) 3-Month

Data

Capture

(%) 3-Month

Average

Lead

(μg/m 3 

# )

January # 5 2 40 0 0.1045 58 0.11

February ^ 5 3 60 0 0.0377 44 0.10

March ^ 5 4 80 0 0.0400 60 0.06

April ^ 5 4 80 2 0.1193 73 0.07

May 5 5 100 2 0.0756 87 0.08

June 5 3 60 4 0.0714 80 0.09

July 5 5 100 3 0.0653 80 0.07

August ^ 5 3 60 4 0.1560 73 0.10

September 5 4 80 0 0.2880 80 0.17

October ^^ 5 4 80 1 0.1162 73 0.19

November ^^ 5 3 60 3 0.2325 73 0.21

December # 5 4 80 1 0.0682 73 0.14

Valid 3-month average (may include data substitution).

^ Data Capture <75% and average is below the NAAQS, so data s ubstitution is not allowed. As a result, this is not a

valid 3-month average.

^^ Data Capture <75% and average is the above the NAAQ S; 40 CFR 50 Appendix R § 4(c )(ii)(A) allows use of the

LOWEST data value recorded in the same month over the design period as a substitute for the missing sample(s) up

to minimum 75% data capture. This 3-month average is valid.

# Data Capture <75% and number of samples for month in the design value period is insufficient; thus, data

substitution not done and 3-month average is invalid.



# Above the NAAQS test - February 2008

Month No. of

Possible

Samples No. of

Creditable

Samples Monthly

Data

Capture

(%) No. of

Extra

Samples Monthly

Average

Lead

(μg/m 3 

# ) 3-Month

Data

Capture

(%) 3-Month

Average

Lead

(μg/m 3 

# )



# December ~ 6 6 100 0 0.0522

January ~ 5 4 80 0 0.0543

February 5 3 60 0 0.0377 80 0.05

~ December had 4 samples substituted with 0.002 μg/m 3 

# from 12/21/2006 and January had 2 samples substituted

with 0.004 μg/m 3 

# from 1/20/2007 for 2006-2008 Design Value period to get the February 2008 Data Capture >75%.



# Above the NAAQS test - March 2008

Month No. of

Possible

Samples No. of

Creditable

Samples Monthly

Data

Capture

(%) No. of

Extra

Samples Monthly

Average

Lead

(μg/m 3 

# ) 3-Month

Data

Capture

(%) 3-Month

Average

Lead

(μg/m 3 

# )



# January ~ 5 5 100 0 0.0442

February 5 3 60 0 0.0377

March 5 4 80 1 0.0400 80 0.04

~ January had 3 samples substituted with 0.004 μg/m 3 

# from 1/20/2007 for 2006-2008 Design Value period to get the

March 2008 Data Capture >75%.

Revisions from December 3, 2009 version: Table footnote “^^” was revised to properly characterize the data substitution

procedure. Actual dates of substi tute sample values were added.

# Response to Zephyr Report on Pb Nonattainment Page 8

December 9, 2009 Above the NAAQS test - April 2008

Month No. of

Possible

Samples No. of

Creditable

Samples Monthly

Data

Capture

(%) No. of

Extra

Samples Monthly

Average

Lead

(μg/m 3 

# ) 3-Month

Data

Capture

(%) 3-Month

Average

Lead

(μg/m 3 

# )



# February ~ 5 4 80 0 0.0295

March 5 4 80 1 0.0400

April 5 4 80 2 0.1193 80 0.06

~ February had 1 sample substituted with 0.005 μg/m 3 

# from 2/1/2007 for 2006-2008 Design Value period to get the

April 2008 Data Capture >75%.



# Above the NAAQS test - August 2008

Month No. of

Possible

Samples No. of

Creditable

Samples Monthly

Data

Capture

(%) No. of

Extra

Samples Monthly

Average

Lead

(μg/m 3 

# ) 3-Month

Data

Capture

(%) 3-Month

Average

Lead

(μg/m 3 

# )



# June ~ 5 4 80 4 0.0630

July 5 5 100 3 0.0653

August 5 3 60 4 0.1560 80 0.09

~ June had 1 sample substituted with 0.004 μg/m 3 

# from 6/7/2007 for 2006-2008 Design Value period to get the

August 2008 Data Capture >75%.



# Above the NAAQS test - October 2008

Month No. of

Possible

Samples No. of

Creditable

Samples Monthly

Data

Capture

(%) No. of

Extra

Samples Monthly

Average

Lead

(μg/m 3 

# ) 3-Month

Data

Capture

(%) 3-Month

Average

Lead

(μg/m 3 

# )



# August ~ 5 4 80 4 0.1383

September 5 4 80 0 0.2880

October 5 4 80 1 0.1162 80 0.18

~ August had 1 sample substituted with 0.014 μg/m 3 

# from 8/6/2007 for 2006-2008 Design Value period to get the

October 2008 Data Capture >75%.



# Above the NAAQS test - November 2008

Month No. of

Possible

Samples No. of

Creditable

Samples Monthly

Data

Capture

(%) No. of

Extra

Samples Monthly

Average

Lead

(μg/m 3 

# ) 3-Month

Data

Capture

(%) 3-Month

Average

Lead

(μg/m 3 

# )



# September 5 4 80 0 0.2880

October 5 4 80 1 0.1162

November ~ 5 4 80 3 0.1999 80 0.20

~ November had 1 sample substituted with 0.004 μg/m 3 

# from 11/13/2007 for 2006-2008 Design Value period to get

the November 2008 Data Capture >75%.

Revisions from the December 3, 2009 version: Actual dates of substitute samp le values were added.

# 8 

# Appendix H

Town of Kearny Resolution Regarding Pb Boundary Recommendation

# 9 This page is intentionally blank.