Pilot Study of High
Performance Air Filtration
for Classrooms Applications

Final Report

Prepared by:
South Coast Air Quality Management District (AQMD)
21865 Copley Dr, Diamond Bar, CA 91765

IQAir North America
10440 Ontiveros Place, Santa Fe Springs, CA 90670

 ABSTRACT
A pilot study was conducted between April and December 2008 to investigate the
effectiveness of three different air purification systems in reducing the exposure of
children to air contaminants inside nine classrooms at three Southern California schools
(three classrooms per school). Two of them, Del Amo Elementary and Dominguez
Elementary, are part of the Los Angeles Unified School District (LAUSD), while the
third school, Hudson Elementary, is part of the Long Beach Unified School District
(LBUSD). Continuous and integrated measurements were conducted to monitor the
indoor and outdoor concentrations of the following species: ultrafine particles (UFP),
particulate matter mass (both PM2.5 and PM10), black carbon (BC), and volatile organic
compounds (VOCs). An HVAC-based high-performance panel filter (HP-PF), a registerbased air purifier (RS), and a standalone system (SA) were tested alone and in different
combinations for their ability to remove the monitored pollutants from the indoor air.
Overall, the coupling between a register system and a high-performance panel
filter (RS + HP-PF) was the most effective solution for reducing the indoor
concentrations of BC, UFP, and PM2.5, with study average removal efficiencies varying
from 87 to 96%. When using a HP-PF alone, reductions close to 90% were also obtained.
Due to re-suspension of dust and other relatively large particles from common indoor
activities such as walking and cleaning, the removal performance of PM10 was lower than
that of other particle measurements (68% when using a RS + HP-PF combination). In all
cases, air quality conditions were improved substantially with respect to the
corresponding baseline (pre-existing) conditions, when removal efficiencies for the
different particulate pollutants varied between 20% and 50%. Data obtained from the
analysis of canister samples collected at Dominguez elementary showed that the total
VOC removal performance of the register system (RS) was 28%. These values were
substantially higher for the standalone unit (SA) operated with and without the use of the
HVAC system (58 and 86%, respectively). Because gas-absorbing media may be subject
to saturation after experiencing high short-term concentrations, the effectiveness,
lifetime, costs, benefits, and maintenance of the gas removal systems tested in this pilot
study must be further assessed before conclusions and recommendations can be made.

i

 TABLE OF CONTENTS




INTRODUCTION
o Background
o Objectives and Study Design

1
1

METHODS
o Schools and Classrooms Characteristics
o Air Purification Solutions
 High-performance panel filter (HP-PF)
 Register system (RS)
 Standalone system (SA)
o In-classroom configurations
o Indoor and outdoor measurements

3
5
6
8
9
10
12

RESULTS AND DISCUSSION
o Removal of PM and other particle species
o Impact on the HVAC system airflow
o Removal of VOCs

14
23
24



ACKNOWLEDGEMENTS

26



REFERENCES

27



APPENDIX A

28



APPENDIX B

46



ii

 INTRODUCTION
Background
Numerous epidemiological and toxicological studies have found positive
associations between exposure to atmospheric particulate matter (PM) and adverse health
effects (Pope and Dockery, 2006; Environmental Protection Agency Integrated Science
Assessments, 2009). Although air quality standards have been established for outdoor
ambient environments, a significant portion of human exposures to PM occurs indoors,
where people spend around 85-90% of their time. Hence, it is important to understand
and reduce the sources of both indoor and outdoor PM. Indoor PM consists of outdoor
particles that have infiltrated indoors, particles emitted indoors (primary), and particles
formed indoors (secondary) from precursors emitted both indoors and outdoors.
Children are regarded as particularly susceptible to potential health hazards
related to PM exposure, which include asthma, lung inflammation, allergies and other
types of respiratory and cardiovascular problems. School-aged children spend
approximately 30% of their day in classrooms. For this reason, minimizing the
concentration of PM (as well as that of other air contaminants) inside classrooms is
important, especially at schools located in close proximity to roadways and other
substantial sources of air pollution. One approach is the installation of panel filters inside
the Heating, Ventilating, and Air Conditioning (HVAC) system. Common medium
performance filters with a Minimum Performance Reporting Value (MERV) of 7 (those
installed in most commercial buildings) remove only a small fraction of the particles with
aerodynamic diameters lower than 0.3 µm, although higher removal efficiencies are
generally achieved for larger particles. Diesel particulate matter, which is considered an
air toxic, generally consists of particles less than 0.3 µm. New evidence also suggests that
ultrafine particles, less than 0.1 µm by definition, have harmful health effects beyond
those caused by particle mass.
Filtration in classrooms presents some unique challenges. The older HVAC
systems that exist in older schools were not designed with air filtration in mind. The
classroom is a noise sensitive environment, so filtration systems must meet strict decibel
limits when in operation. Classrooms often have high ventilation rates with doors and
windows that are frequently open to outside air. Finally, classrooms are large, densely
occupied spaces with a lot of activity that can lead to indoor generation of particles and
other pollutants.
Objectives and Study Design
The objective of this pilot study was to investigate the effectiveness of three
different air purification systems/solutions in reducing the exposure of children to
outdoor-infiltrated and indoor-generated air contaminants inside nine classrooms at three
Southern California schools. To this end, the South Coast Air Quality Management
District (SCAQMD; 21865 Copley Dr, Diamond Bar, CA 91765) worked in close
collaboration with IQAir (IQAir North America, 10440 Ontiveros Place, Santa Fe
Springs, CA 90670), a company that specializes in air purification solutions, and Thermal
Comfort Systems (Thermal Comfort Systems Inc., 8038 Andasol Ave., Northridge, CA
91325), an HVAC contractor. Of particular interest was the removal of various sizes and
types of particulate matter, especially the smaller sizes associated with diesel engine

1

 exhaust. Solutions for removing gaseous air contaminants that may be air toxics or cause
odors were also examined. The types of pollutants for which the performance of the
installed systems were tested are described below:
-

Ultra-fine particles (UFPs; particles with an aerodynamic diameter less than 0.1 µm):
UFP are primarily produced from the combustion of fossil fuels (e.g. motor-vehicle
emissions). Recent health studies suggest that UFPs are more toxic than fine particles,
possibly due to their chemical composition and their ability to penetrate cell walls,
enter the blood stream, and translocate to organs throughout the body. UFP are
currently unregulated in the United States.

-

Fine PM (PM2.5; particles with an aerodynamic diameter less than 2.5 µm): Sources
of PM2.5 include emissions from motor vehicles, power plants, residential wood
burning, forest fires, agricultural burning, and other combustion activities. Fine
particles have well established health effects, including multiple adverse respiratory
and cardiovascular outcomes. PM2.5 is a U.S. Environmental Protection Agency (U.S.
EPA) criteria pollutant for which there exist National Ambient Air Quality Standards
(NAAQS).

-

PM10 (particles with an aerodynamic diameter less than 10 µm): PM10 includes all
PM2.5 particles, but also larger particles between 2.5 and 10 µm in diameter. Sources
of these coarse particles include crushing or grinding operations, re-suspension of
dust from vehicles traveling on roads, and other mechanical processes. PM10 is also a
U.S. Environmental Protection Agency (U.S. EPA) criteria pollutant and also has
associated National Ambient Air Quality Standards (NAAQS).

-

Black Carbon (BC; sometimes referred to as soot; related closely to elemental
carbon): BC is a component of PM and is formed through the incomplete combustion
of fossil fuels and biomass, and is emitted from both natural and anthropogenic
sources. Most atmospheric BC is in the fine or ultra-fine particle size ranges. The
majority of BC in Southern California comes from diesel particulate matter (DPM)
emissions. DPM is considered an air toxic by the State of California, and the
SCAQMD has recently estimated that DPM accounts for more than 80% of the total
cancer risk from air toxics in the South Coast Air Basin (MATES III Study, 2008).

-

Volatile Organic Compounds (VOCs): these gases are emitted by a variety of
evaporative processes and combustion sources, including paints, cleaning supplies,
pesticides, building materials, household products, refineries, and mobile sources.
Given some of the indoor sources, concentrations of many VOCs may be much
higher indoors than outdoors (Jia et al., 2007; Bruno et al., 2008). Gasoline and diesel
fuels are also important sources of VOCs. Exposure to many of these organic
contaminants has also been associated with a wide array of toxic health effects.

2

 METHODS
Schools and Classrooms Characteristics
Three elementary schools (all located in Southern Los Angeles County in the
Carson-Long Beach area) were selected for this pilot study. Two of them, Del Amo
Elementary and Dominguez Elementary, are part of the Los Angeles Unified School
District (LAUSD), while the third school, Hudson Elementary, is part of the Long Beach
Unified School District (LBUSD). All three schools are in close proximity to at least
three large refineries and several heavily trafficked highways and freeways including the
I-110, I-405, I-710, and CA-103 (Figure 1). The Los Angeles and Long Beach Port
complexes and the Union Pacific Railroad Intermodal Container Transfer Facility (UPRR
ICTF) are other major emissions sources in the area. The presence of these important
emissions sources has lead to local concerns about the air quality in the surrounding
communities.

C

A

B

4 mi

Figure 1. Map of the study area as obtained from Google Earth (Google Inc. 1400
Amphitheatre Pkwy, Mountain View, CA 94043). The yellow circles indicate the
locations of the three elementary schools participating in this pilot study: Del Amo (A),
Hudson (B), and Dominguez (C). The Union Pacific Railroad Intermodal Container
Transfer Facility is marked by the black rectangle

3

 At each of the three elementary schools, three classrooms with similar structural
characteristics and ventilation conditions were selected to provide reproducible test
conditions for the various air purification systems deployed. All classrooms (varying
between 7533 and 9196 ft3 in size) already included forced-air HVAC systems, although
windows and doors were regularly used for additional ventilation. The most relevant
characteristics of all nine classrooms are listed in Table 1, along with their respective
identification numbers.

Table 1. Structural characteristics and ventilation conditions of the nine classrooms
selected for this pilot study
SCHOOL
Classroom ID
Total Number of Occupants
Room Size (ft)
Room Volume (ft3)
HVAC System Type
HVAC Panel Filter Type
Filter Rating
HVAC Operation

DA-6
18

DEL AMO
DA-7
19

DA-8
22

38×24×10 38×24×10 38×24×10
9120

9120

9120

H-11
21

HUDSON
H-15
11

H-52
17

DZ-7
28

DOMINGUEZ
DZ-9
28

DZ-11
29

30×30×9

30×30×9

31×27×9

38×22×11

38×22×11

38×22×11

7533

9196

8100

DW-M*
DW-M*
DW-M* DM-ZR**
2" Pleated 2" Pleated 2" Pleated 2" Pleated
MERV 7 MERV 7 MERV 7 MERV 7
Manual
Manual
Manual Automatic

8100
DM-ZR**
2" Pleated
MERV 7
Automatic

DR***
DR***
2" Fiberglass 1" Pleated
Unclassified MERV 7
Manual
Manual

9196

9196

DR***
1" Pleated
MERV 7
Manual

DR***
1" Pleated
MERV 7
Manual

Number of Supply Vents

1

1

1

1

1

4

3

3

3

Supplied Airflow# (cfm)
Air Exchange Rate

1200
7.9

1200
7.9

1250
8.2

840
6.2

903
6.7

1236
9.8

1642
10.7

1681
11.0

1772
11.5

*

DW-M = Ducted Wall-Mount

**

DM-ZR = Ducted Multi-Zone Rooftop

***

DR = Ducted Rooftop

#

With existing panel filter

Prior to beginning this study, none of the selected classrooms featured any
specific air purification device other than one or more medium performance panel filters
(MERV 7) installed inside the respective HVAC systems. The typical replacement
interval for these air filters is approximately three months according to schools schedules.
The primary purpose of this panel filter is to remove coarser particles and dust to protect
the HVAC system's heating and cooling coils. These filters generally provide little or no
removal of smaller particles or gaseous pollutants.

4

 Air Purification Solutions
Three different air purification solutions were tested for their ability to remove
UFP, PM2.5, PM10, BC and, where possible, VOCs from the air stream:
a) an HVAC-based high-performance panel filter (HP-PF),
b) a register-based air purifier (here referred to as register system or RS), and
c) a standalone system (SA).
All air purification solutions were provided, installed, and maintained by IQAir, and their
primary features are summarized in Table 2.

Table 2. Summary of the primary features of the three air purification devices adopted
for this pilot study: high-performance panel filter (HP-PF), register system (RS), and
standalone system (SA)
High-performance
Panel Filter
(PF)

Register
Sysyem
(RS)

Standalone
System
(SA)

√

√

√

0

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

0

√

√

√

√

N/A

N/A

√

N/A

N/A

√

High UFP and PM2.5 Filtration Efficiency
High Gas Phase Filtration Efficiency
Low Pressure Drop / High Air Flow
Low Noise
Low Maintenance
High Classroom Compatibility
No HVAC System Retrofit
Minimal Impact on Classroom Space
Low Power Consumption
Tamper-Resistant Design
√ = featured
0 = not featured

5

 High-performance panel filter (HP-PF)
In most classrooms, the existing medium performance panel filters were replaced
with one or more HP-PFs as shown to in Figure 2.

Figure 2. Schematic of a typical HVAC system. The picture on the right-hand side shows
a typical high-performance panel filter (HP-PF) after several months of usage

Compared to standard/conventional medium performance MERV filters, the highperformance panel filters used for this pilot study are twice as thick (2” in depth) and
have a much larger filter surface area (five to nine times larger). Due to the increased
surface area and the special filter material used, they generally have similar air resistance
properties as conventional filters and, thus, do not act to reduce the air flow through the
HVAC system. Also, due to the increased surface area and specific design, these media
have the potential to last longer than conventional filters before replacement is required.
Because these filters are manufactured using a proprietary “nano-fiber” technology, their
ability to remove UFPs and BC from the air stream is also higher. Table 3 shows a
comparison between the characteristics of several conventional MERV filters available
for residential and commercial applications and the HP-PF employed in this pilot study.

6

 Table 3. Comparison between the main characteristics of several conventional MERV
filters and the high-performance panel filters (HP-PF) tested in this study
Filter
Pressure
Media
Filter
Filter
Annual
Annual
Total Annual
Cost ($)
Efficiency (%)1
Drop (in w.g.)2 Area (ft2) Life (months) Cost ($) Filter Cost ($) Maintenance Cost ($)3
at 0.3 µm at 1.0 µm
CONVENTIONAL PANEL FILTERS
Panel Filter
Type

Low Efficiency
2" Fiberglass
Medium Efficiency
1" Pleated
Medium Efficiency
2" Pleated
High Efficiency
2" Pleated
High Efficiency
2" Pleated
High Efficiency
2" Mini-Pleat

Filter
Rating

(unrated)

1

10

0.28

4.0

3

3 to 5

12 to 20

50

62 to 70

MERV 7

3

25

0.48

7.5

3

5 to 7

20 to 28

50

70 to 78

MERV 7

5

35

0.30

11.8

3

7 to 10

28 to 40

50

78 to 90

MERV 11

15

58

0.39

17.8

3

13 to 20

52 to 80

50

102 to 130

MERV 13

30

85

0.41

21.1

3

25 to 40

100 to 160

50

150 to 210

MERV 16

90

99

2.00

55.0

3

80

320

50

370

60.0

6 to 12

120

120 to 240

13 to 25

133 to 245

PILOT STUDY HIGH-PERFORMANCE PANEL FILTER
High-performance
MERV 16
2" Mini-Pleat

93

99

0.38

Data are based on a nominal 24" × 24" filter size
Typical minimum efficiency at rated face velocity of 492 fpm
2
Typical pressure drop of a new filter; based on a face velocity of 492 fpm
3
Based on an estimated maintenance time of 15 min per filter change (at $50/hr)
1

7

 Register system (RS)
This device is installed directly on the HVAC register, where the air supply enters
the room. The unit is equipped with a “nano-technology” filter media for the removal of
PM and high-capacity gas phase filter cartridges to eliminate certain gaseous pollutants
from the air stream (e.g. VOCs) (Figure 3). This particular design allows for a longer
contact time between the filtration media and the gaseous pollutants than would be
permitted by using an activated carbon panel filter in the HVAC system. Nevertheless,
the RS does not reduce the overall HVAC system airflow if installed by a trained
specialist.

Figure 3. Schematic of the register system (RS) as installed in one of the study
classrooms. A high-performance panel filter (HP-PF) may also be installed in the HVAC
air handler to provide additional particle filtration

8

 Standalone system (SA)
A standalone system (SA) is a self-contained air cleaning device that operates
independently of a classroom’s HVAC system. This air filtration system is 6 feet tall and
has a footprint of about 4 ft2 (Figure 4). The SA is tamper proof, runs on a standard power
circuit, and is built with an energy efficient fan, located inside a specially designed box
for ultra quiet operation (<45 db(A) at high airflow). Indoor air enters from the lower part
of the system (about 6 inches off the ground) and passes, sequentially, through a large
“nano-technology” filter media, for the removal of PM, and 12 high-capacity gas phase
filter cartridges, for removal of the gaseous pollutants commonly found indoors (VOCs)
(Figure 4).

Figure 4. Schematic of the standalone system (SA) as installed in one of the classrooms

The main characteristics of the SA tested in this pilot study have been
summarized in Table 4 and compared to those of other typical “residential” and
“commercial” standalone units available on the market. A major design consideration for
the SA was low noise. Many school districts have set a 45db(A) noise threshold for new
in classroom equipment. At this noise level, available residential and commercial air
purification devices offer less than two air changes per hour (ACH) in a typical
classroom. This SA unit offers more than five ACH.

9

 Table 4. Comparison between the main features of the standalone system used for this
pilot study and those of other commercially available standalone air purifiers
Residential
Commercial
Pilot Study
Air Purifier
Standalone
Standalone
Particle Filtration Technology Electronic / Media Electronic / Media
Media
Removal Efficiency at 0.3 µm (%)
40 to 99
60 to 99
> 99
Maximum Airflow (cfm)
150 to 400
400 to 1200
1200
Airflow at 45 dB(A) (cfm)
25 to 100
100 to 200
800
Gas-phase Filtration Media (lb)
0.5 to 18
10 to 80
100
Price ($)
200 to 1,000
1,500 to 12,000
8,500
Price / CFM at 45 db(A) ($)
8 to 10
15 to 60
11
Classroom ACH at 45 db(A)*
0.2 to 0.7
0.7 to 1.3
5.3
*Air Changes per Hour (ACH) based on a 9000 ft 3 room

In-classroom configurations
Different combinations of the standalone system, HVAC-based high-performance
panel filter, and register-based air purifier were used inside the studied classrooms to
evaluate the performance of these air filtration devices:
1. High-performance panel filter alone: HP-PF
2. Register-based air purifier alone (RS). It should be noted that in some cases a
conventional / medium performance panel filter (PF) was already installed inside
the HVAC system prior to the beginning of the study: RS+PF
3. Register-based air purifier in conjunction with a high-performance panel filter:
RS + HP-PF
4. Standalone system in classrooms with no HVAC running: SA
5. Standalone system in classrooms with a HVAC running, in which case a
conventional / medium performance panel filter (PF) was already installed inside
the HVAC system prior to the beginning of the study: SA + PF
6. Standalone system in conjunction with a high-performance panel filter: SA + HPPF
A schematic representation of these six configurations is shown below (Figure 5).

10

 Registerbased air
purifier (RS)
Standalone
system
(SA)

HVAC-based highperformance panel
filter (HP-PF)
Conventional /
medium efficiency
panel filter (PF)

Figure 5. Schematic representation of the six air purification solutions tested in this pilot
study

11

 Indoor and outdoor measurements
Four mobile air quality monitoring stations were used to measure the indoor and
outdoor concentrations of the targeted air pollutants. Each of these stations was
comprised of a mobile cart supporting the following instruments (Figure 6):











A portable Aethalometer (model AE42, Magee Scientific, 2800 Adeline
St., Berkeley CA 94703) to provide continuous measurements of BC
concentrations (ng/m3)
A water-based condensation particle counter (CPC model 3781, TSI, 500
Cardigan Road, Shoreview, MN 55126) to provide continuous
measurements of the particle number concentration (#/cm3), an indicator
of UFPs
A laser particle counter (IQAir ParticleScan Pro): for determining the
number concentration (#/cm3) of particles down to 0.3 μm in diameter.
Since the PM2.5 particle mass concentration in urban areas tends to be
dominated by particles in the 0.3 – 1.0 μm range, this instrument provides
a rough estimate of the PM2.5 mass.
A laser-based particle mass monitor (Aerocet 531 Aerosol Particulate
Profiler, MetOne; 1600 Washington Blvd., Grants Pass, Oregon 97526): to
provide continuous measurements of the mass concentration (µg/m3) of
both PM2.5 and PM10
A low volume filter sampler (SKC Leland Legacy Sample Pump with
SKC DPS Impactor, 863 Valley View Road Eighty Four, PA 15330): to
collect time-integrated filter-based PM10 samples. Samples were collected
at 10L/min on 47mm Teflon filters for the duration of a typical school day.
These substrates were weighed before and after collection using a
microbalance, and the PM10 concentration (µg/m3) was calculated by
dividing the difference in PM10 mass by the corresponding sampling
volume. These gravimetric measurements were considered as primary
indicators of the PM10 mass.
6L EPA TO-15 SUMMA canisters: to collect time-integrated air samples
over the course of a typical school day. Samples were then analyzed by
gas chromatography-mass spectrometry (GC-MS) to measure the
concentrations of 61 specific VOCs (ppbv).

12

 Figure 6. One of the four mobile stations used to monitor the indoor and outdoor
concentrations of the targeted air pollutants

At each school, one air quality monitoring cart was set-up outside to sample
outdoor air. The remaining three stations were placed indoors, one in each classroom,
near one of the walls and just a few meters away from the students. Measurements were
made away from all air conditioning vents to better represent mixed indoor air quality
conditions as experienced by students and teachers. All sensors and inlets were
approximately three feet above the floor, or about the height of a child’s head when
seated. The effectiveness of each of the tested air purification solutions was then
evaluated by comparing the indoor concentrations of the targeted air pollutants to the
corresponding outdoor levels. Baseline measurements were taken before installing any of
the air purification solutions to estimate the pre-existing removal efficiencies of the
classrooms before modification. Measurements that were found to be inaccurate or
unrepresentative due to meteorological conditions (e.g. rain), improper cart placement, or
instrument malfunction were not considered in the data analysis.
Before and after school hours, the four measurement stations were collocated in a
storage room and the continuous instruments were run “side-by-side” to provide quality
assurance of the measurements, to estimate the precision characteristics, and to identify
any potential problems. Table 5 shows the specific air purification solutions that were
tested inside each of the nine classrooms, along with the dates when all baseline and
actual measurements were taken.

13

 Table 5. Summary of the air purification solutions tested in each of the nine classrooms.
The dates when all baseline and actual measurements were taken are also included
School / Class ID
04 / 07-11 / 08
Del Amo / DA-6
Del Amo / DA-7
Del Amo / DA-8
Hudson / H-11
Hudson / H-15
Hudson / H-52
Dominguez / DZ-7
Dominguez / DZ-9
Dominguez / DZ-11

Configurations Used
04 / 14-18 / 08
04 / 21-25 / 08

04 / 28 / 08 to 05 / 02 / 08

Baseline
Baseline
Baseline

SA + PF
RS
HP-PF

SA + PF
RS
HP-PF

SA + HP-PF
RS
HP-PF

05 / 12-16 / 08

05 / 19-23 / 08

05 / 26-30 / 08

06 / 02-06 / 08

Baseline
Baseline
Baseline

HP-PF
HP-PF
HP-PF

RS + HP-PF
RS + HP-PF
RS + HP-PF

RS + HP-PF
RS + HP-PF
RS + HP-PF

11 / 18-26 / 08

12 / 01-05 / 08

12 / 08-12 / 08

12 / 15-19 / 08

Baseline
Baseline
Baseline

SA / SA + PF
HP-PF
HP-PF

SA + HP-PF
HP-PF
RS + HP-PF

SA + HP-PF
HP-PF
RS + HP-PF

HP-PF = HVAC-based high-performance panel filter
RS = register-based air purifier
SA = stand alone system
PF = conventional / medium efficiency panel filter

The three schools were tested one at a time from April to December 2008 for a
total of over 150 valid measurement days across all schools and classrooms. The period
of sampling was during regularly scheduled school hours, with minor adjustments for
school schedule changes.

RESULTS AND DISCUSSION
Removal of PM and other particle species
Figure 7a summarizes the study average particle removal efficiencies (here
defined as the percentage reduction in the indoor concentration of a particular pollutant
relative to its concurrent outdoor concentration) achieved by the six air purification
solutions. Indoor and outdoor mass and particle number concentrations were averaged
over the duration of a typical school day and across all days, classrooms and schools. The
corresponding study average particle removal efficiencies for each elementary school are
shown in Figures 7b, 7c, and 7d for Del Amo, Hudson and Dominguez, respectively.
Daily and weekly average indoor and outdoor concentrations of BC, UFP, PM2.5 and
PM10 at all schools and classrooms are provided in APPENDIX A, along with the
corresponding average indoor/outdoor ratios and removal efficiencies.
Overall, the combination of a register system and a high-performance panel filter
(RS + HP-PF) was the most effective solution for reducing the indoor concentrations of
BC, UFP, and PM2.5 (both mass and particle count), with average removal efficiencies
varying from 87 to 96% (Figure 7a). Replacing a conventional HVAC-based panel filter
(PF) with a HP-PF resulted in a substantial reduction in the indoor levels of all particulate
pollutants inside all classrooms, especially when this high-performance panel filter was
operated in conjunction with other air filtration devices. When using the HP-PF alone, the
study average removal efficiencies were also close to 90% (88, 86, 91, and 88%, for BC,

14

 UFP, PM2.5 count, and PM2.5 mass, respectively). These average values are significantly
higher than baseline (pre-existing) conditions, when removal efficiencies for the different
pollutants were only about 20-50%.

Baseline
SA + PF
SA + HP-PF
RS
RS + HP-PF

PM10 (µg/m3)*

PM2.5 (µg/m3)

PM2.5 (#/cm3)

HP-PF

UFP (#/cm3)

100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%

ALL CLASSROOMS AT ALL SCHOOLS

BC (µg/m3)

Removal Efficiency

a)

* From gravimetric / filter measurements
The PM10 concentration was higher indoors than outdoors due to indoor sources

15

 DEL AMO ELEMENTARY SCHOOL

b)

100%

Baseline

80%
SA + PF **

70%
60%
50%

SA + HP-PF

40%
RS

30%
20%

HP-PF
PM10 (µg/m3)*

PM2.5 (µg/m3)

PM2.5 (#/cm3)

0%

UFP (#/cm3)

10%
BC (µg/m3)

Removal Efficiency

90%

* From gravimetric / filter measurements ** With HVAC
The PM10 concentration was higher indoors than outdoors due to indoor sources

16

 HUDSON ELEMENTARY SCHOOL

Baseline
RS + HP-PF

* From gravimetric / filter measurements

17

PM10 (µg/m3)*

PM2.5 (µg/m3)

PM2.5 (#/cm3)

HP-PF

UFP (#/cm3)

100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%

BC (µg/m3)

Removal Efficiency

c)

 DOMINGUEZ ELEMENTARY SCHOOL

d)

90%

Baseline

80%

SA**

70%

SA + PF ***

60%
50%

SA + HP-PF

40%
30%

RS + HP-PF

20%
10%
PM10 (µg/m3)*

PM2.5 (µg/m3)

PM2.5 (#/cm3)

UFP (#/cm3)

0%

HP-PF
BC (µg/m3)

Removal Efficiency

100%

* From gravimetric / filter measurements ** Without HVAC *** With HVAC
The PM10 concentration was higher indoors than outdoors because of indoor sources
Figure 7. Particle removal efficiencies (%) achieved by the six air purification solutions.
Bars indicate data averaged a) at all schools and in all classrooms, b) at Del Amo, c) at
Hudson, and d) at Dominguez

18

 In all cases, air quality conditions were improved substantially with respect to the
corresponding baseline measurements. The intra-classroom variability of the measured
removal efficiencies was low, as indicated by the low standard deviations given in Table
6a. This reflects the fact that all air purification solutions were highly effective at all
schools and in all classrooms, as confirmed by the particle removal performance data for
each of the three elementary schools in Tables 6b (Del Amo), 6c (Hudson) and 6d
(Dominguez).
The stand-alone system (SA) is well suited for indoor environments not equipped
with an HVAC. In order to simulate conditions similar to those encountered in older
classrooms not equipped with a forced air climate control device, the HVAC in room DZ7 (at Dominguez) was intentionally turned off for part of the study. When the SA unit
was running with the HVAC off, removal efficiencies were close to 90% for BC, UFP
and PM2.5 (count) (Table 6d). For BC and UFP, these percentages were slightly lower
when the HVAC was running since more of the smaller particles (mostly unfiltered by
the existing conventional panel filter) were entering the classrooms from outdoors.
Overall, our results confirmed that conventional HVAC panel filters are not particularly
effective in removing UFP, although they can be effective in removing coarser particles.

19

 Table 6. Particle removal efficiencies (%) achieved by the six air purification solutions.
Data represent averages a) at all schools and in all classrooms, b) at Del Amo, c) at
Hudson, and d) at Dominguez
ALL CLASSROOMS AND ALL SCHOOLS

a)
Study

BC (%)

UFP (%)

48

22 ± 13

52 ± 17

45

±

14

37

±

14

67 ±

6

77 ± 6

79

±

5

75

11

91 ±

6

93 ± 4

90

±

3

82

15

74 ± 20

81 ± 10

79

±

17

35

95 ±

2

96 ± 3

93

±

5

35

88 ±

5

86 ± 7

91

±

4

days (#)
Baseline
SA + PF**
SA + HP-PF
RS + PF
RS + HP-PF
HP-PF

PM2.5 count (%)

Study

PM10

gravimetric mass (%)

1

mass monitor (%)

26

-67

±

156

13

±

±

5

17

±

71

59

±

9

±

12

49

±

16

53

±

33

69

±

24

31

±

55

22

±

46

87

±

11

68

±

11

42

±

28

88

±

8

54

±

25

53

±

31

2

36

15

8

45 ± 16

18

±

20

27

±

17

-224

±

278

26

±

26

N/A

N/A

9

N/A ± N/A

PM2.5 mass (%)

PM10

UFP (%)

±

PM2.5 count (%)

PM10

BC (%)

days (#)

gravimetric mass (%)

1

mass monitor (%)

N/A ± N/A

N/A

±

N/A

N/A

±

N/A

N/A

±

N/A

N/A

±

10

52 ±

7

68 ± 6

60

±

7

64

±

5

29

±

102

51

±

9

5

90 ±

5

92 ± 3

93

±

1

91

±

4

84

±

11

74

±

11

15

74 ± 20

81 ± 10

79

±

17

69

±

24

31

±

55

22

±

46

N/A

N/A ± N/A

N/A ± N/A

N/A

±

N/A

N/A

±

N/A

N/A

±

N/A

N/A

±

N/A

87 ± 4

89

±

5

89

±

5

58

±

28

62

±

13

15

88 ±

4

2

HUDSON ELEMENTARY SCHOOL

c)
Study

BC (%)

UFP (%)

days (#)
Baseline
SA*
SA + PF**
SA + HP-PF
RS + PF
RS + HP-PF
HP-PF

PM10

DEL AMO ELEMENTARY SCHOOL

b)

Baseline
SA*
SA + PF**
SA + HP-PF
RS + PF
RS + HP-PF
HP-PF

PM2.5 mass (%)

15

33 ±

9

PM2.5 count (%)

PM2.5 mass (%)

PM10

PM10

gravimetric mass (%)1

mass monitor (%)2

56 ± 18

46

±

11

74

±

5

64

±

28

54

±

23

N/A

N/A ± N/A

N/A ± N/A

N/A

±

N/A

N/A

±

N/A

N/A

±

N/A

N/A

±

N/A

N/A

N/A ± N/A

N/A ± N/A

N/A

±

N/A

N/A

±

N/A

N/A

±

N/A

N/A

±

N/A

N/A

N/A ± N/A

N/A ± N/A

N/A

±

N/A

N/A

±

N/A

N/A

±

N/A

N/A

±

N/A

N/A

N/A ± N/A

N/A ± N/A

N/A

±

N/A

N/A

±

N/A

N/A

±

N/A

N/A

±

N/A

27

96 ±

2

98 ± 2

94

±

4

94

±

5

67

±

8

51

±

30

15

92 ±

2

91 ± 4

93

±

2

93

±

4

68

±

19

59

±

33

DOMINGUEZ ELEMENTARY SCHOOL

d)
Study

BC (%)

UFP (%)

days (#)

PM2.5 count (%)

PM2.5 mass (%)

PM10

PM10

gravimetric mass (%)

1

mass monitor (%)

Baseline
SA*

18

24 ± 21

54 ± 16

70

±

11

11

±

55

-40

±

161

-42

±

60

3

90 ±

4

94 ± 2

92

±

6

75

±

10

0

±

34

31

±

42

SA + PF**

4

82 ±

5

86 ± 5

97

±

2

86

±

4

4

±

40

66

±

8

SA + HP-PF
RS + PF
RS + HP-PF
HP-PF

6

91 ±

6

94 ± 4

87

±

5

72

±

20

13

±

20

32

±

55

N/A

N/A ± N/A

N/A

±

N/A

N/A

±

N/A

N/A

±

N/A

N/A

±

N/A

8

N/A ± N/A
94 ±

2

94 ± 3

91

±

6

80

±

17

69

±

14

33

±

25

18

85 ±

8

81 ± 13

91

±

5

81

±

16

35

±

28

39

±

48

Note: Negative removal efficiencies indicate the presence of an indoor source of PM 10
1

From gravimetric / filter measurements
Using a particle mass monitor
*The HVAC system was turned off
**Operated in conjunction with a standard (MERV 7) panel filter installed in the HVAC system

2

It should be noted that the negative removal efficiencies associated with several
baseline PM10 measurements indicate conditions where indoor concentrations were higher
than the corresponding outdoor levels. This is likely due to re-suspension of dust and
other relatively large particles caused by in-classroom activities such as walking and
cleaning. Due to the presence of these indoor sources, the removal performance of PM10
was lower than that of other particle measurements.

20

2

 Figure 8 illustrates the effect of indoor activities on in-classroom PM10 levels at
Hudson Elementary School (Room H-15) on May 21, 2008. On this day removal
efficiencies approached 100% before the school day started and during lunchtime (when
students and staff members were outside the classroom) and were substantially lower
when classes were in session.

EFFECT OF INDOOR ACTIVITIES ON THE
REMOVAL EFFICIENCY OF PM10
Class duration

+50

-200

Carts
moving

-150

Recess

-100

Lunch

-50

Students out of class

0

Recess

Removal Efficiency (%)

+100

Time
Figure 8. Effect of indoor activities on the removal performance of PM10 at Hudson
elementary school (Room H-15) on May 21, 2008

Activities occurring immediately outside the school boundaries were observed to
influence the indoor concentrations of some pollutants and, thus, their corresponding
removal efficiencies. Figure 9 shows the effect of increased motor-vehicle emissions due
to the morning drop-off of students (grey areas) on the outdoor concentrations of BC, and
the associated spikes in indoor BC levels occurring just before the beginning of the
school day, when the classroom doors were left open. Overall, these indoor peaks caused
a relatively small decrease in the calculated removal performance when averaged over the
course of the entire school day.

21

 5/27/08 6:15

0.00

Outdoors
H-11

22

H-15

5/30/08 11:15

5/30/08 10:15

5/30/08 08:15
5/30/08 09:15

5/30/08 07:15

5/29/08 11:25

5/29/08 10:25

5/29/08 08:25
5/29/08 09:25

5/29/08 07:25

5/28/08 11:55
5/29/08 6:55
5/29/08 7:25
5/29/08 7:55
5/29/08 8:25
5/29/08 8:55
5/29/08 9:25
5/29/08 9:55
5/29/08 10:25
5/29/08 10:55
5/29/08 11:25
5/29/08 11:55
5/30/08 6:45
5/30/08 7:15
5/30/08 7:45
5/30/08 8:15
5/30/08 8:45
5/30/08 9:15
5/30/08 9:45
5/30/08 10:15
5/30/08 10:45
5/30/08 11:15
5/30/08 11:45

11:25
5/28/08
11:25
5/28/08

5/28/08 10:55

10:25
5/28/08
10:25
5/28/08

5/28/08 9:55

9:25
5/28/08
09:25
5/28/08

5/28/08 8:55

8:25
5/28/08
08:25
5/28/08

5/28/08 7:55

7:25
5/28/08
07:25
5/28/08

5/28/08 6:55

10:45
5/27/08
10:45
5/27/08
5/27/08 11:15
11:45
5/27/08
11:45
5/27/08

5/27/08 10:15

9:45
5/27/08
09:45
5/27/08

5/27/08 9:15

8:45
5/27/08
08:45
5/27/08

5/27/08 8:15

07:45
5/27/08
7:45
5/27/08

5/27/08 7:15

06:45
5/27/08
6:45
5/27/08

BC (µg/m3)

EFFECT OF PRE-SCHOOL ACTIVITIES ON
BC CONCENTRATIONS

4500

4.5

4000

4.0

3500

3.5

3000
3.0

2500
2.5

2000
2.0

1500
1.5

1000
1.0

500
0.5

H-52

Figure 9. Effect of before school activities on BC concentrations. Grey areas show an
increase in both indoor and outdoor levels due to morning drop-off traffic

 Impact on the HVAC system airflow
As discussed earlier, the high-performance panel filters (HP-PF) used for this
pilot study are thicker than standard/conventional medium performance MERV filters.
However, due to their increased surface area and proprietary “nano-fiber” design, they
generally have similar air resistance properties as conventional filters and, thus, do not
reduce the airflow through the HVAC system.
As shown in Table 7, replacing a conventional panel filter (PF; typically 1” in
depth) with a thicker high-performance panel filter (HP-PF; 2” deep) did not alter the
measured airflow in any of the studied classrooms. Adding a register system without
upgrading to a high-performance panel filter (see the RS-PF configuration data below)
reduced the HVAC system airflow by an average of 9%. This small reduction is due to
the increased pressure drop resulting from the addition of a gas-phase filtration media.
Using a register system while also upgrading to a high-performance panel filter (RS +
HP-PF configuration in Table 7) altered the airflow by only 1-3%. At Hudson elementary
school, installation of the register system in classrooms H-11 and H-15 required a
widening of the connection to the supply duct. This caused an airflow increase between
17 and 24%.

Table 7. Effect of a high-performance panel filter (HP-PF) and/or a register system (RS)
on the HVAC system airflow
DEL AMO ELEMENTARY SCHOOL
DA-6
Baseline
HP-PF
RS + PF

Airflow (cfm)
1200
1210
N/A

DA-7
Change (%)
1
N/A

Airflow (cfm)
1200
N/A
1090

DA-8
Change (%)
N/A
-9

Airflow (cfm)
1250
1250
N/A

Change (%)
0
N/A

HUDSON ELEMENTARY SCHOOL
H-11
Baseline
HP-PF
RS + HP-PF

Airflow (cfm)
840
844
1039

H-15
Change (%)
0
24

Airflow (cfm)
903
913
1054

H-52
Change (%)
1
17

Airflow (cfm)
1236
1246
1194

Change (%)
1
-3

DOMINGUEZ ELEMENTARY SCHOOL
DZ-7
Baseline
HP-PF
RS + HP-PF

Airflow (cfm)
1642
1661
N/A

DZ-9
Change (%)
1
N/A

Airflow (cfm)
1681
1664
N/A

23

DZ-11
Change (%)
-1
N/A

Airflow (cfm)
1722
1771
1742

Change (%)
3
1

 Removal of VOCs
Although canister samples were collected at all schools and classrooms, and all
samples were analyzed for VOCs, the data recovery at Del Amo and Hudson was
insufficient to guarantee an adequate interpretation of the results. The detection limits of
the analysis method used at those schools were not low enough to quantify most of the
VOCs of interest. After the analysis methods were modified to correct for this problem,
reliable VOC data were obtained for Dominguez elementary. Therefore, only VOC data
from Dominguez are discussed in this section. Table 8 summarizes the removal
efficiencies for:




Total VOCs: expressed as the sum of 61 individual compounds and 53
unspeciated organic compounds
Ethanol: a chemical emitted from both indoor and outdoor evaporative sources
Benzene: a species mostly emitted from gasoline-powered vehicles. This
compound was used here as an indicator of VOCs of outdoor origin

Daily average concentrations of individual VOCs measured at Dominguez
elementary school (i.e. DZ-7, DZ-9, and DZ-11) are given in APPENDIX B.

Table 8. Average removal efficiencies of total VOCs, ethanol, and benzene at
Dominguez elementary school
DOMINGUEZ ELEMENTARY SCHOOL
Study
Days (#)
Baseline
SA (HVAC off)*
SA + PF (HVAC on)**
SA + HP-PF
RS
RS + HP-PF
HP-PF

18
3
4
6
N/A
8
18

Total VOCs (%)1
-114
15
19
-6
N/A
-3
-64

±
±
±
±
±
±
±

731
132
198
280
N/A
345
404

Ethanol (%)
-1230
-349
-587
-929
N/A
-534
-1111

±
±
±
±
±
±
±

982
276
903
853
N/A
502
1164

Benzene (%)
-11
52
58
73
N/A
58
1

± 22
± 35
± 33
± 11
± N/A
± 49
± 38

1

Sum of 61 known VOCs and 53 unspeciated organic compounds

*Operated with the HVAC system turned off
**Operated with the HVAC system turned on

Large standard deviations reflect the wide concentration ranges for the different
chemicals. As expected, existing and high-performance panel filters (PF and HP-PF,
respectively) had virtually no effect on the VOC levels measured indoors, since these air
filtration media did not include gas removal capabilities. The standalone system (SA)
demonstrated a 52 to 73% removal performance for benzene.
At all three schools, the indoor concentrations of ethanol were consistently the
highest among all measured VOCs and higher than outdoor levels. This organic

24

 compound is a common solvent used in whiteboard markers, detergents and other
cleaning products, and has several potential indoor sources. The negative removal
efficiencies shown in Table 8 indicate that the indoor concentrations of some VOCs were
often higher than the corresponding outdoor levels. Our findings are in line with those
from previous research studies (Jia et al., 2007; Bruno et al., 2008), and confirm that
several measured indoor VOCs are mostly of indoor origin. For this reason, a direct
comparison of indoor and outdoor total VOC concentrations is not appropriate when
significant indoor sources exist.
Therefore, classroom DZ-9, whose air conditioning system was equipped with a
HP-PF and no gas phase filtration device, was used as the “baseline” (rather than the
outdoor monitoring site) to better evaluate the actual effectiveness of the standalone unit
(SA) and the register system (RS) installed in classrooms DZ-7 and DZ-11, respectively
(Table 9). When compared to the control classroom (DZ-9), the removal efficiencies for
total VOCs in classrooms DZ-7 and DZ-11 showed a reduction in gaseous pollutants with
respect to baseline conditions.

Table 9. Average removal efficiencies of total VOCs with respect to a control classroom
(DZ-9) not equipped with any gas phase filtration device. All data refer to measurements
taken at Dominguez elementary school

DOMINGUEZ ELEMENTARY SCHOOL
(removal efficiency with respect to classroom DZ-9)
Classroom

Study
1

Baseline
RS
SA (HVAC off)*
SA + PF (HVAC on)**

Comparison
DZ-7 & DZ-11 vs DZ-9
DZ-11 vs DZ-9
DZ-7 vs DZ-9
DZ-7 vs DZ-9

Days (#)
14
10
2
8

Total VOCs (%)2
-31
-3
55
27

±
±
±
±

367
521
50
198

1

DZ-9 = "control classroom" (HP-PF but no gas-phase filtration)
Sum of 61 known VOCs and 53 unspeciated organic compounds

2

*Operated with the HVAC system turned off
**Operated with the HVAC system turned on

Removal efficiencies corresponding to baseline measurements indicate that the
total VOC concentration inside the two test rooms (DZ-7 and DZ-11) were, on average,
31% higher than that in the control classroom (DZ-9), probably because of differences in
indoor activities (e.g. cleaning). Assuming this difference persisted throughout the entire
duration of the study, the actual VOC removal performance of the register system (RS)
was about 28% (-3% + 31%). Similarly, when normalizing for the initial conditions in the
control classroom, the removal efficiencies of the standalone (SA) unit operated with and
without the use of the HVAC system were about 58% (27% + 31%) and 86% (55% +
31%), respectively.

25

 Overall, these solutions demonstrated some ability to reduce VOCs indoors,
although not as consistently or effectively as the particle filtration. This may be due to the
presence of one or more indoor sources of gaseous pollutants. The removal performance
of gas-absorbing media (as opposed to filtration substrates) is dependent on media history
and may be subject to saturation after experiencing high short-term concentrations or
after longer-term use. Therefore, the lifetime, cost, benefits, and maintenance of the gas
removal media must be further assessed before conclusions and recommendations can be
made.

ACKNOWLEDGEMENTS
This pilot study was funded through the use of mitigation fees collected by the South
Coast Air Quality Management District (SCAQMD) under Rule 1172 for VOC releases
by local refineries. AQMD is the air pollution control agency for all of Orange County
and urban portions of Los Angeles, Riverside and San Bernardino counties, the smoggiest
region of the United States. IQAir North America, Inc., a leading specialist in air
filtration solutions for homes, hospitals and schools, and Thermal Comfort Systems,
specialist in HVAC system design, were selected by SCAQMD through a competitive bid
process to provide for the design, engineering and installation of the air filtration devices
used for this work.

26

 REFERENCES
Bruno, P., Caselli, M., De Gennaro, G., Iacobellis, S., and Tutino, M. (2008) “Monitoring
of volatile organic compounds in non-residential indoor environments”, Indoor Air, 18
(3): 250-256
Environmental Protection Agency Integrated Science Assessments (External Review
Draft; 2009). http://cfpub.epa.gov/ncea/cfm/recordisplay.cfm?deid=201805
Jia, C., Batterman, S. and Godwin, C. (2007) “VOCs in industrial, urban and suburban
neighborhoods, Part 1: Indoor and outdoor concentrations, variation, and risk drivers”,
Atmospheric Environment, 42 (9): 2083-2100
MATES III Study, 2008 (http://www.aqmd.gov/prdas/matesIII/matesIII.html)
Pope, C. A., and Dockery, D. W. (2006) "Health effects of fine particulate air pollution:
Lines that connect", Journal of the Air & Waste Management Association, 56: 709-742

27

 APPENDIX A. Daily and weekly average indoor and outdoor concentrations of black carbon (BC), ultra-fine particles (UFP), fine
particulate matter (PM2.5) and coarse PM (PM10) at all schools and classrooms. The corresponding average indoor / outdoor ratios and
removal efficiencies are also included. Missing data (mostly due to instrument malfunction) and periods affected by rain have been
highlighted in yellow. The air purification solutions adopted in each classroom have been summarized below each Table

Del Amo Elementary School - Black Carbon
Average Outdoor
Concentration (ng/m3)
1,611
948
1,119
1,692
4,451
1,964
1,426
3,688
1,128
1,353
4,392
3,387
2,789
1,462
1,409
2,396
1,180
1,691
3,261
1,987
846
3,789
1,908
1,077
1,055
3,338
2,233
1,272

Date
4/7/2008
4/8/2008
4/9/2008
4/10/2008
4/11/2008
Average (Week 1)
Standard Deviation
4/14/2008
4/15/2008
4/16/2008
4/17/2008
4/18/2008
Average (Week 2)
Standard Deviation
4/21/2008
4/22/2008
4/23/2008
4/24/2008
4/25/2008
Average (Week 3)
Standard Deviation
4/28/2008
4/29/2008
4/30/2008
5/1/2008
5/2/2008
Average (Week 4)
Standard Deviation

School / Class ID
04 / 07-11 / 08
Del Amo / DA-6
Del Amo / DA-7
Del Amo / DA-8

Average Indoor Concentration (ng/m3)
DA-6
DA-7
DA-8
1,392
1,490
1,465
902
1,094
887
1,166
1,147
1,044
1,518
1,495
1,500
3,547
3,665
3,651
1,705
1,778
1,709
1,056
1,071
1,117
1,802
383
410
595
851
93
824
703
333
2,301
1,656
435
1,752
1,061
254
1,455
931
305
718
475
138
537
171
105
1,097
414
265
498
226
125
734
362
193
1,377
455
278
848
326
193
379
122
79
209
349
375
135
269
279
104
108
127
191
156
160
292
1,899
505
186
556
289
73
756
156

Configurations Used
04 / 14-18 / 08
04 / 21-25 / 08

Baseline
Baseline
Baseline

SA + PF
RS
HP-PF

SA + PF
RS
HP-PF

04 / 28 / 08 to 05 / 02 / 08
SA + HP-PF
RS
HP-PF

HP-PF = HVAC-based high-performance panel filter
RS = register-based air purifier
SA = stand alone system
PF = conventional / medium efficiency panel filter

28

DA-6
0.86
0.95
1.04
0.90
0.80
0.91
0.09
0.49
0.53
0.61
0.52
0.52
0.53
0.04
0.38
0.46
0.42
0.43
0.42
0.42
0.03
0.06
0.07
0.10
0.18
0.09
0.10
0.05

Average Indoor/Outdoor Ratio
DA-7
DA-8
0.92
0.91
1.15
0.94
1.03
0.93
0.88
0.89
0.82
0.82
0.96
0.90
0.13
0.05
0.10
0.11
0.75
0.08
0.52
0.25
0.38
0.10
0.31
0.07
0.41
0.12
0.24
0.07
0.12
0.07
0.17
0.11
0.19
0.11
0.21
0.11
0.14
0.09
0.17
0.10
0.04
0.02
0.09
0.10
0.14
0.15
0.10
0.12
0.15
0.15
0.57
0.15
0.21
0.13
0.20
0.02

DA-6
14%
5%
-4%
10%
20%
9%
9%
51%
47%
39%
48%
48%
47%
4%
62%
54%
58%
57%
58%
58%
3%
94%
93%
90%
82%
91%
90%
5%

Average Removal Efficiency
DA-7
8%
-15%
-3%
12%
18%
4%
13%
90%
25%
48%
62%
69%
59%
24%
88%
83%
81%
79%
86%
83%
4%
91%
86%
90%
85%
43%
79%
20%

DA-8
9%
6%
7%
11%
18%
10%
5%
89%
92%
75%
90%
93%
88%
7%
93%
89%
89%
89%
91%
90%
2%
90%
85%
88%
85%
85%
87%
2%

 Del Amo Elementary School - Ultra Fine Particles
Date
4/7/2008
4/8/2008
4/9/2008
4/10/2008
4/11/2008
Average (Week 1)
Standard Deviation
4/14/2008
4/15/2008
4/16/2008
4/17/2008
4/18/2008
Average (Week 2)
Standard Deviation
4/21/2008
4/22/2008
4/23/2008
4/24/2008
4/25/2008
Average (Week 3)
Standard Deviation
4/28/2008
4/29/2008
4/30/2008
5/1/2008
5/2/2008
Average (Week 4)
Standard Deviation

Average Outdoor
Concentration (particles/cm3)
34,674
39,291
19,124
41,814
42,613
35,503
9,665
53,086
35,591
55,384
35,185
44,812
10,923
57,526
46,241
34,366
38,854
33,004
41,998
10,101
40,429
57,136
30,692
37,507
34,214
39,996
10,249

School / Class ID
04 / 07-11 / 08
Del Amo / DA-6
Del Amo / DA-7
Del Amo / DA-8

Average Indoor Concentration (particles/cm3)
DA-6
DA-7
DA-8
25,215
15,555
17,984
14,386
11,354
18,384
12,960
19,800
21,327
19,463
19,833
22,452
19,935
16,635
21,072
16,686
4,054
2,996
3,533
16,017
6,724
7,303
7,878
8,865
10,233
14,757
14,140
8,932
13,945
12,367
5,628
14,434
11,992
4,979
13,406
10,818
7,415
3,184
2,974
2,201
20,259
6,007
5,267
13,552
8,158
7,011
9,741
5,891
3,039
10,831
7,090
5,171
8,965
4,695
2,794
12,670
6,368
4,656
4,585
1,312
1,751
2,179
4,967
5,287
3,963
7,457
7,819
1,909
2,347
3,136
4,076
4,677
3,640
3,845
12,424
4,961
3,194
6,374
4,968
1,058
3,836
1,827

Configurations Used
04 / 14-18 / 08
04 / 21-25 / 08

Baseline
Baseline
Baseline

SA + PF
RS
HP-PF

SA + PF
RS
HP-PF

04 / 28 / 08 to 05 / 02 / 08
SA + HP-PF
RS
HP-PF

HP-PF = HVAC-based high-performance panel filter
RS = register-based air purifier
SA = stand alone system
PF = conventional / medium efficiency panel filter

29

DA-6
0.40
0.59
0.47
0.47
0.48
0.08
0.30
0.41
0.25
0.41
0.34
0.08
0.35
0.29
0.28
0.28
0.27
0.30
0.03
0.05
0.07
0.06
0.11
0.11
0.08
0.03

Average Indoor/Outdoor Ratio
DA-7
DA-8
0.73
0.46
0.37
0.96
0.68
0.51
0.47
0.53
0.47
0.64
0.49
0.21
0.13
0.13
0.14
0.40
0.22
0.34
0.27
0.12
0.10
0.18
0.17
0.18
0.14
0.16
0.03
0.12
0.13
0.08
0.12
0.36
0.16
0.11

0.25
0.10
0.14
0.16
0.06
0.09
0.15
0.09
0.13
0.08
0.11
0.03
0.13
0.14
0.10
0.10
0.14
0.12
0.02

Average Removal Efficiency
DA-7
DA-8
27%
60%
54%
63%
41%
4%
32%
53%
49%
53%
53%
47%
53%
52%
36%
51%
8%
21%
13%
70%
87%
86%

DA-6

59%
75%
59%
66%
8%
65%
71%
72%
72%
73%
70%
3%
95%
93%
94%
89%
89%
92%
3%

60%
78%
66%
73%
12%
90%
82%
83%
82%
86%
84%
3%
88%
87%
92%
88%
64%
84%
11%

75%
90%
86%
84%
6%
91%
85%
91%
87%
92%
89%
3%
87%
86%
90%
90%
86%
88%
2%

 Del Amo Elementary School - PM2.5 (count)
Date

Average Outdoor
Concentration (particles/ft3)

4/7/2008
4/8/2008
4/9/2008
4/10/2008
4/11/2008
Average (Week 1)
Standard Deviation
4/14/2008
4/15/2008
4/16/2008
4/17/2008
4/18/2008
Average (Week 2)
Standard Deviation
4/21/2008
4/22/2008
4/23/2008
4/24/2008
4/25/2008
Average (Week 3)
Standard Deviation
4/28/2008
4/29/2008
4/30/2008
5/1/2008
5/2/2008
Average (Week 4)
Standard Deviation

1,129,234
606,772
878,513
1,657,318
1,067,959
447,095
1,510,925
1,448,473
1,448,590
2,375,182
3,303,699
2,017,374
819,499
1,117,692
1,962,746
1,677,902
1,606,064
1,649,781
1,602,837
305,266
1,284,388
2,011,522
1,367,829

1,554,580
397,917

School / Class ID
04 / 07-11 / 08
Del Amo / DA-6
Del Amo / DA-7
Del Amo / DA-8

Average Indoor Concentration (particles/ft3)
DA-6
DA-7
DA-8
1,425,737
860,458
818,779
859,380
589,396
761,753
621,944
654,570
1,007,993
1,686,712
1,092,355
1,098,063
929,208
842,014
293,205
515,070
186,681
608,865
153,470
164,656
675,560
901,449
87,792
823,550
755,949
363,943
935,700
625,960
216,222
1,068,499
835,426
206,160
822,435
654,451
207,755
187,458
298,268
100,893
445,613
132,034
89,866
721,027
258,062
184,328
639,840
235,809
136,928
565,163
258,425
167,180
558,423
189,268
127,409
586,013
214,719
141,142
102,511
54,125
36,669
94,732
159,555
165,842
121,487
205,529
272,593
108,012
120,466
153,098
143,394
155,073
791,947
275,170
108,077
284,178
204,355
13,378
285,555
63,660

Configurations Used
04 / 14-18 / 08
04 / 21-25 / 08

Baseline
Baseline
Baseline

SA + PF
RS
HP-PF

SA + PF
RS
HP-PF

04 / 28 / 08 to 05 / 02 / 08
SA + HP-PF
RS
HP-PF

HP-PF = HVAC-based high-performance panel filter
RS = register-based air purifier
SA = stand alone system
PF = conventional / medium efficiency panel filter

30

DA-6
0.76

Average Indoor/Outdoor Ratio
DA-7
DA-8

0.61
0.69
0.11
0.40
0.47
0.57
0.39
0.32
0.43
0.09
0.40
0.37
0.38
0.35
0.34
0.37
0.02
0.07
0.06
0.08

0.73
0.97
0.71
1.02
0.86
0.16
0.10
0.62
0.52
0.26
0.25
0.35
0.21
0.12
0.13
0.14
0.16
0.11
0.13
0.02
0.12
0.10
0.09

0.76
1.26
0.75
0.66
0.86
0.27
0.11
0.06
0.25
0.09
0.06
0.11
0.08
0.08
0.09
0.08
0.10
0.08
0.09
0.01
0.13
0.14
0.11

0.07
0.01

0.10
0.02

0.13
0.01

DA-6
24%

Average Removal Efficiency
DA-7
DA-8

39%
31%
11%
60%
53%
43%
61%
68%
57%
9%
60%
63%
62%
65%
66%
63%
2%
93%
94%
92%

27%
3%
29%
-2%
14%
16%
90%
38%
48%
74%
75%
65%
21%
88%
87%
86%
84%
89%
87%
2%
88%
90%
91%

24%
-26%
25%
34%
14%
27%
89%
94%
75%
91%
94%
89%
8%
92%
91%
92%
90%
92%
91%
1%
87%
86%
89%

93%
1%

90%
2%

87%
1%

 Del Amo Elementary School - PM2.5 (mass)
Date
4/7/2008
4/8/2008
4/9/2008
4/10/2008
4/11/2008
Average (Week 1)
Standard Deviation
4/14/2008
4/15/2008
4/16/2008
4/17/2008
4/18/2008
Average (Week 2)
Standard Deviation
4/21/2008
4/22/2008
4/23/2008
4/24/2008
4/25/2008
Average (Week 3)
Standard Deviation
4/28/2008
4/29/2008
4/30/2008
5/1/2008
5/2/2008
Average (Week 4)
Standard Deviation

Average Outdoor
Concentration (µg/m3)
8.74
14.25
8.61
7.48
7.24
9.27
2.86
10.14
15.06
12.49
10.60
8.25
11.31
2.58
10.99
11.03
8.59
12.72
7.09
10.08
2.23
5.61
17.88
14.50
12.95
14.08
13.00
4.52

School / Class ID
04 / 07-11 / 08
Del Amo / DA-6
Del Amo / DA-7
Del Amo / DA-8

Average Indoor Concentration (µg/m3)
DA-6
DA-7
DA-8
10.50
6.68
6.51
10.54
7.04
5.07
6.43
6.05
6.53
5.73
4.55
3.89
5.94
4.73
6.50
7.06
5.77
2.88
1.98
1.10
3.61
1.93
0.90
4.75
12.40
1.15
5.44
9.75
3.31
5.21
0.62
3.76
3.68
1.05
4.39
6.59
1.41
0.86
4.35
1.08
3.56
2.28
0.81
3.65
1.82
1.31
2.81
2.54
1.18
4.27
2.74
1.70
2.44
1.31
0.52
3.35
2.14
1.10
0.73
0.58
0.45
0.69
1.05
0.34
0.87
1.61
1.79
1.35
1.25
1.87
1.78
1.17
1.62
0.75
5.79
2.10
1.09
2.17
1.55
0.46
2.03
0.69

Configurations Used
04 / 14-18 / 08
04 / 21-25 / 08

Baseline
Baseline
Baseline

SA + PF
RS
HP-PF

SA + PF
RS
HP-PF

04 / 28 / 08 to 05 / 02 / 08
SA + HP-PF
RS
HP-PF

HP-PF = HVAC-based high-performance panel filter
RS = register-based air purifier
SA = stand alone system
PF = conventional / medium efficiency panel filter

31

DA-6
1.20
0.59
0.87
0.54
0.80
0.31
0.36
0.32
0.44
0.46
0.39
0.07
0.32
0.33
0.33
0.34
0.34
0.33
0.01
0.12
0.05
0.09
0.14
0.05
0.09
0.04

Average Indoor/Outdoor Ratio
DA-7
DA-8
0.76
74%
0.74
0.49
0.75
0.70
0.77
0.61
0.82
0.65
0.77
0.64
0.03
0.10
0.19
0.09
0.82
0.08
0.78
0.26
0.49
0.06
0.45
0.13
0.55
0.12
0.26
0.08
0.21
0.07
0.17
0.12
0.30
0.14
0.22
0.13
0.19
0.07
0.21
0.11
0.05
0.03
0.19
0.06
0.09
0.10
0.09
0.13
0.09
0.13
0.41
0.15
0.17
0.11
0.14
0.03

DA-6
-20%
41%
13%
46%
20%
31%
64%
68%
56%
54%
61%
7%
68%
67%
67%
66%
66%
67%
1%
88%
95%
91%
86%
95%
91%
4%

Average Removal Efficiency
DA-7
24%
26%
25%
23%
18%
23%
3%
81%
18%
22%
51%
55%
45%
26%
79%
83%
70%
78%
81%
79%
5%
81%
91%
91%
91%
59%
83%
14%

DA-8
26%
51%
30%
39%
35%
36%
10%
91%
92%
74%
94%
87%
88%
8%
93%
88%
86%
87%
93%
89%
3%
94%
90%
87%
88%
85%
89%
3%

 Del Amo Elementary School - PM10 (from particle mass monitor measurements)
Date
4/7/2008
4/8/2008
4/9/2008
4/10/2008
4/11/2008
Average (Week 1)
Standard Deviation
4/14/2008
4/15/2008
4/16/2008
4/17/2008
4/18/2008
Average (Week 2)
Standard Deviation
4/21/2008
4/22/2008
4/23/2008
4/24/2008
4/25/2008
Average (Week 3)
Standard Deviation
4/28/2008
4/29/2008
4/30/2008
5/1/2008
5/2/2008
Average (Week 4)
Standard Deviation

Average Outdoor
Concentration (µg/m3)
35.78
45.40
28.99
29.55
41.44
36.23
7.22
37.29
49.49
43.89
43.78
33.84
41.66
6.14
45.13
39.96
33.54
40.68
35.52
38.96
4.56
5.61
49.89
55.49
44.69
52.56
41.65
20.53

School / Class ID
04 / 07-11 / 08
Del Amo / DA-6
Del Amo / DA-7
Del Amo / DA-8

Average Indoor Concentration (µg/m3)
DA-6
DA-7
DA-8
35.22
28.42
21.97
55.07
23.04
20.88
24.58
23.40
34.72
22.50
18.44
11.06
25.65
20.46
25.47
31.25
21.46
11.68
13.49
2.04
16.79
31.87
11.31
18.09
81.10
17.11
27.44
75.71
22.75
48.13
11.29
19.71
38.90
16.90
20.51
55.14
15.87
4.77
22.09
4.79
17.94
31.35
14.58
23.99
20.92
18.86
14.53
32.46
18.54
21.02
26.43
21.74
15.42
18.02
10.66
18.58
25.83
16.88
3.94
6.33
4.31
0.69
1.05
0.34
12.13
17.43
13.57
19.75
18.17
23.04
17.16
17.06
21.40
9.90
32.02
19.66
11.93
17.14
15.60
7.40
10.97
9.25

Configurations Used
04 / 14-18 / 08
04 / 21-25 / 08

Baseline
Baseline
Baseline

SA + PF
RS
HP-PF

SA + PF
RS
HP-PF

04 / 28 / 08 to 05 / 02 / 08
SA + HP-PF
RS
HP-PF

HP-PF = HVAC-based high-performance panel filter
RS = register-based air purifier
SA = stand alone system
PF = conventional / medium efficiency panel filter

32

DA-6
0.98
0.72
1.18
0.27
0.79
0.39
0.45
0.37
0.63
0.58
0.51
0.12
0.40
0.60
0.43
0.52
0.43
0.48
0.08
0.12
0.24
0.36
0.38
0.19
0.26
0.11

Average Indoor/Outdoor Ratio
DA-7
DA-8
0.79
61%
1.21
0.51
0.85
0.81
0.76
0.62
0.62
0.49
0.85
0.61
0.22
0.13
0.85
0.30
1.64
0.35
1.72
0.52
1.10
0.26
1.15
0.50
1.29
0.38
0.37
0.12
0.69
0.32
0.52
0.47
0.97
0.55
0.65
0.53
0.51
0.30
0.67
0.44
0.19
0.12
0.19
0.06
0.35
0.27
0.33
0.42
0.38
0.48
0.61
0.37
0.37
0.32
0.15
0.16

DA-6
2%
28%
-18%
73%
21%
39%
55%
63%
37%
42%
49%
12%
60%
40%
57%
48%
57%
52%
8%
88%
76%
64%
62%
81%
74%
11%

Average Removal Efficiency
DA-7
21%
-21%
15%
24%
38%
15%
22%
15%
-64%
-72%
-10%
-15%
-29%
37%
31%
48%
3%
35%
49%
33%
19%
81%
65%
67%
62%
39%
63%
15%

DA-8
39%
49%
19%
38%
51%
39%
13%
70%
65%
48%
74%
50%
62%
12%
68%
53%
45%
47%
70%
56%
12%
94%
73%
58%
52%
63%
68%
16%

 Del Amo Elementary School - PM10 (from filter-based measurements)
Date
4/7/2008
4/8/2008
4/9/2008
4/10/2008
4/11/2008
Average (Week 1)
Standard Deviation
4/14/2008
4/15/2008
4/16/2008
4/17/2008
4/18/2008
Average (Week 2)
Standard Deviation
4/21/2008
4/22/2008
4/23/2008
4/24/2008
4/25/2008
Average (Week 3)
Standard Deviation
4/28/2008
4/29/2008
4/30/2008
5/1/2008
5/2/2008
Average (Week 4)
Standard Deviation

Average Outdoor
Concentration (µg/m3)
11
15

64
30
30
83
61
84
85
73
77
10
100
14
110
61
73
72
38
88
780
67
63
86
217
315

School / Class ID
04 / 07-11 / 08
Del Amo / DA-6
Del Amo / DA-7
Del Amo / DA-8

Average Indoor Concentration (µg/m3)
DA-6
DA-7
DA-8
72
44
80
72
22
66
60
11
53
29
65
47
29
43
60
47
44
12
19
29
87
150
11
25
76
52
41
71
42
20
61
32
11
29
53
37
77
38
30
45
17
71
31
11
49
26
14
11
46
21
20
33
43
12
29
21
33
33
22
26
8
13
11
59
30
14
25
36
12
12
22
21
42
28
12
28
28
14
33
29
4
18
5

Configurations Used
04 / 14-18 / 08
04 / 21-25 / 08

Baseline
Baseline
Baseline

SA + PF
RS
HP-PF

SA + PF
RS
HP-PF

04 / 28 / 08 to 05 / 02 / 08
SA + HP-PF
RS
HP-PF

HP-PF = HVAC-based high-performance panel filter
RS = register-based air purifier
SA = stand alone system
PF = conventional / medium efficiency panel filter

33

DA-6
6.55

0.73
3.64
4.11
1.05
0.41
0.49
0.24
0.15
0.47
0.35
0.71
3.50
0.10
0.33
0.16
0.96
1.44
0.13
0.02
0.18
0.33
0.14
0.16
0.11

Average Indoor/Outdoor Ratio
DA-7
DA-8
4.00
727%
4.80
1.47

0.45
3.08
2.31
1.81
1.25
0.85
0.72
0.40
1.00
0.54
0.31
1.86
0.42
0.54
0.40
0.70
0.65
0.67
0.03
0.18
0.67
0.33
0.37
0.29

0.67
3.14
3.60
0.13
0.85
0.50
0.38
0.73
0.52
0.28
0.11
1.00
0.19
0.70
0.29
0.46
0.38
0.34
0.05
0.33
0.44
0.33
0.30
0.15

DA-6
-555%

27%
-264%
411%
-5%
59%
51%
76%
85%
53%
35%
29%
-250%
90%
67%
84%
4%
144%
88%
98%
82%
67%
86%
84%
11%

Average Removal Efficiency
DA-7
DA-8
-300%
-627%
-380%
-47%

55%
-208%
231%
-81%
-25%
15%
28%
60%
0%
54%
69%
-86%
58%
46%
60%
30%
65%
33%
97%
82%
33%
67%
63%
29%

33%
-214%
360%
87%
15%
50%
62%
27%
48%
28%
89%
0%
81%
30%
71%
54%
38%
66%
95%
67%
56%
67%
70%
15%

 Hudson Elementary School - Black Carbon
Date
5/12/2008
5/13/2008
5/14/2008
5/15/2008
5/16/2008
Average (Week 1)
Standard Deviation
5/19/2008
5/20/2008
5/21/2008
5/22/2008
5/23/2008
Average (Week 2)
Standard Deviation
5/26/2008
5/27/2008
5/28/2008
5/29/2008
5/30/2008
Average (Week 3)
Standard Deviation
6/2/2008
6/3/2008
6/4/2008
6/5/2008
6/6/2008
Average (Week 4)
Standard Deviation

Average Outdoor
Concentration (ng/m3)
889
1,765
1,906
3,632
3,756
2,390
1,253
2,007
1,066
1,344
903
731
1,210
499
1,028
778
1,098
1,140
1,011
162
1,128
1,495
1,106
1,320
2,046
1,419
384

School / Class ID
05 / 12-16 / 08
Hudson / H-11
Hudson / H-15
Hudson / H-52

Average Indoor Concentration (ng/m3)
H-11
H-15
H-52
557
643
666
983
1,155
1,208
1,031
1,297
1,616
2,026
2,597
2,903
2,163
2,486
2,771
1,352
1,636
1,833
704
863
978
78
97
194
74
71
96
104
75
111
95
67
82
68
71
73
84
76
111
15
12
49
63
59
37
35
48
15
50
55
60
51
54
5

Configurations Used
05 / 19-23 / 08
05 / 26-30 / 08

Baseline
Baseline
Baseline

HP-PF
HP-PF
HP-PF

RS + HP-PF
RS + HP-PF
RS + HP-PF

72
58
53
41
56
13
45
69
63
58
52
57
9

26
19
23
27
24
4
36
33
18
65
38
38
17

H-11
0.63
0.56
0.54
0.56
0.58
0.57
0.03
0.04
0.07
0.08
0.11
0.09
0.08
0.03
0.06
0.08
0.03
0.03
0.05
0.02
0.03
0.05
0.05
0.03
0.04
0.01

06 / 02-06 / 08
RS + HP-PF
RS + HP-PF
RS + HP-PF

HP-PF = HVAC-based high-performance panel filter
RS = register-based air purifier
SA = stand alone system
PF = conventional / medium efficiency panel filter

34

Average Indoor/Outdoor Ratio
H-15
0.72
0.65
0.68
0.72
0.66
0.69
0.03
0.05
0.07
0.06
0.07
0.10
0.07
0.02

H-52
0.75
0.68
0.85
0.80
0.74
0.76
0.06
0.10
0.09
0.08
0.09
0.10
0.09
0.01

H-11
37%
44%
46%
44%
42%
43%
3%
96%
93%
92%
89%
91%
92%
3%

0.07
0.07
0.05
0.04
0.06
0.02
0.04
0.05
0.06
0.04
0.03
0.04
0.01

0.03
0.02
0.02
0.02
0.02
0.00
0.03
0.02
0.02
0.05
0.02
0.03
0.01

94%
92%
97%
97%
95%
2%
97%
95%
95%
97%
96%
1%

Average Removal Efficiency
H-15
H-52
28%
25%
35%
32%
32%
15%
28%
20%
34%
26%
31%
24%
3%
6%
95%
90%
93%
91%
94%
92%
93%
91%
90%
90%
93%
91%
2%
1%
93%
93%
95%
96%
94%
2%
96%
95%
94%
96%
97%
96%
1%

97%
98%
98%
98%
98%
0%
97%
98%
98%
95%
98%
97%
1%

 Hudson Elementary School - Ultra Fine Particles
Date
5/12/2008
5/13/2008
5/14/2008
5/15/2008
5/16/2008
Average (Week 1)
Standard Deviation
5/19/2008
5/20/2008
5/21/2008
5/22/2008
5/23/2008
Average (Week 2)
Standard Deviation
5/26/2008
5/27/2008
5/28/2008
5/29/2008
5/30/2008
Average (Week 3)
Standard Deviation
6/2/2008
6/3/2008
6/4/2008
6/5/2008
6/6/2008
Average (Week 4)
Standard Deviation

Average Outdoor
Concentration (particles/cm3)
14,643
40,865
47,145
44,862
38,322
37,167
13,049
38,368
17,442
80,163
27,886
20,524
36,877
25,505
50,891
36,964
40,035
57,760
46,413
9,639
35,495
32,336
18,941
39,083
43,572
33,885
9,343

School / Class ID
05 / 12-16 / 08
Hudson / H-11
Hudson / H-15
Hudson / H-52

Average Indoor Concentration (particles/cm3)
H-11
H-15
H-52
4,083
5,190
8,433
10,619
9,421
19,956
11,563
14,730
19,466
18,397
27,694
29,422
10,435
24,291
29,818
11,019
16,265
21,419
5,083
9,577
8,792
1,835
2,732
5,456
755
2,099
2,033
6,255
4,714
10,681
1,381
1,291
3,353
1,792
1,367
3,214
2,404
2,440
4,947
2,197
1,401
3,434
763
452
367
456
510
174

1,656
53
609
773
814

Configurations Used
05 / 19-23 / 08
05 / 26-30 / 08

Baseline
Baseline
Baseline

HP-PF
HP-PF
HP-PF

RS + HP-PF
RS + HP-PF
RS + HP-PF

1,295
458
435
566
689
408
430
700
393
570
607
540
127

793
594
572
1,006
741
203
426
432
346
3,727
950
1,176
1,446

06 / 02-06 / 08
RS + HP-PF
RS + HP-PF
RS + HP-PF

HP-PF = HVAC-based high-performance panel filter
RS = register-based air purifier
SA = stand alone system
PF = conventional / medium efficiency panel filter

35

H-11
0.28
0.26
0.25
0.41
0.27
0.29
0.07
0.05
0.04
0.08
0.05
0.09
0.06
0.02
0.01
0.01
0.01
0.01
0.01
0.00

0.09
0.00
0.01
0.03
0.05

Average Indoor/Outdoor Ratio
H-15
0.35
0.23
0.31
0.62
0.63
0.43
0.18
0.07
0.12
0.06
0.05
0.07
0.07
0.03

H-52
0.58
0.49
0.41
0.66
0.78
0.58
0.14
0.14
0.12
0.13
0.12
0.16
0.13
0.02

H-11
72%
74%
75%
59%
73%
71%
7%
95%
96%
92%
95%
91%
94%
2%

0.03
0.01
0.01
0.01
0.01
0.01
0.01
0.02
0.02
0.01
0.01
0.02
0.00

0.02
0.02
0.01
0.02
0.02
0.00
0.01
0.01
0.02
0.10
0.02
0.03
0.04

99%
99%
99%
99%
99%
0%

91%
100%
99%
97%
5%

Average Removal Efficiency
H-15
65%
77%
69%
38%
37%
57%
18%
93%
88%
94%
95%
93%
93%
3%

H-52
42%
51%
59%
34%
22%
42%
14%
86%
88%
87%
88%
84%
87%
2%

97%
99%
99%
99%
99%
1%
99%
98%
98%
99%
99%
98%
0%

98%
98%
99%
98%
98%
0%
99%
99%
98%
90%
98%
97%
4%

 Hudson Elementary School - PM2.5 (count)
Date
5/12/2008
5/13/2008
5/14/2008
5/15/2008
5/16/2008
Average (Week 1)
Standard Deviation
5/19/2008
5/20/2008
5/21/2008
5/22/2008
5/23/2008
Average (Week 2)
Standard Deviation
5/26/2008
5/27/2008
5/28/2008
5/29/2008
5/30/2008
Average (Week 3)
Standard Deviation
6/2/2008
6/3/2008
6/4/2008
6/5/2008
6/6/2008
Average (Week 4)
Standard Deviation

Average Outdoor
Concentration (particles/ft3)
1,109,627
1,850,803
1,760,128
1,839,611
1,128,564
1,537,747
383,828
660,607
1,477,586
1,613,826
1,530,791
987,855
1,254,133
412,015
440,181
362,533
369,467
529,995
425,544
77,973
1,472,339
2,102,152
1,346,575
1,167,940
998,499
1,417,501
422,678

School / Class ID
05 / 12-16 / 08
Hudson / H-11
Hudson / H-15
Hudson / H-52

Average Indoor Concentration (particles/ft3)
H-11
H-15
H-52
576,204
511,734
718,130
757,977
897,986
1,156,730
682,498
838,534
1,199,580
767,375
1,011,002
1,191,460
525,461
723,482
781,768
661,903
796,548
1,009,534
108,096
190,066
238,576
44,930
61,168
59,352
68,443
70,820
131,786
103,883
73,924
125,633
106,300
69,737
94,795
77,470
71,330
70,589
80,205
69,396
96,431
25,650
4,850
32,203

H-11
0.52
0.41
0.39
0.42
0.47
0.44
0.05
0.07
0.05
0.06
0.07
0.08
0.07
0.01

52,467
66,769
33,173
35,119
46,882
15,843

0.12
0.18
0.09
0.07
0.11
0.05

56,800
64,055
77,692
67,890
66,609
8,703

Configurations Used
05 / 19-23 / 08
05 / 26-30 / 08

Baseline
Baseline
Baseline

HP-PF
HP-PF
HP-PF

RS + HP-PF
RS + HP-PF
RS + HP-PF

51,042
46,541
50,616
28,628
44,207
10,582
38,432
81,009
66,975
56,657
40,091
56,633
18,070

26,303
18,906
17,735
23,916
21,715
4,067
36,347
39,991
19,669
29,352
24,490
29,970
8,331

06 / 02-06 / 08
RS + HP-PF
RS + HP-PF
RS + HP-PF

HP-PF = HVAC-based high-performance panel filter
RS = register-based air purifier
SA = stand alone system
PF = conventional / medium efficiency panel filter

36

0.03
0.05
0.07
0.07
0.05
0.02

Average Indoor/Outdoor Ratio
H-15
0.46
0.49
0.48
0.55
0.64
0.52
0.07
0.09
0.05
0.05
0.05
0.07
0.06
0.02

H-52
0.65
0.62
0.68
0.65
0.69
0.66
0.03
0.09
0.09
0.08
0.06
0.07
0.08
0.01

H-11
48%
59%
61%
58%
53%
56%
5%
93%
95%
94%
93%
92%
93%
1%

0.12
0.13
0.14
0.05
0.11
0.04
0.03
0.04
0.05
0.05
0.04
0.04
0.01

0.06
0.05
0.05
0.05
0.05
0.01
0.02
0.02
0.01
0.03
0.02
0.02
0.00

88%
82%
91%
93%
89%
5%
97%
95%
93%
93%
95%
2%

Average Removal Efficiency
H-15
H-52
54%
35%
51%
38%
52%
32%
45%
35%
36%
31%
48%
34%
7%
3%
91%
91%
95%
91%
95%
92%
95%
94%
93%
93%
94%
92%
2%
1%
88%
87%
86%
95%
89%
4%
97%
96%
95%
95%
96%
96%
1%

94%
95%
95%
95%
95%
1%
98%
98%
99%
97%
98%
98%
0%

 Hudson Elementary School - PM2.5 (mass)
Date
5/12/2008
5/13/2008
5/14/2008
5/15/2008
5/16/2008
Average (Week 1)
Standard Deviation
5/19/2008
5/20/2008
5/21/2008
5/22/2008
5/23/2008
Average (Week 2)
Standard Deviation
5/26/2008
5/27/2008
5/28/2008
5/29/2008
5/30/2008
Average (Week 3)
Standard Deviation
6/2/2008
6/3/2008
6/4/2008
6/5/2008
6/6/2008
Average (Week 4)
Standard Deviation

Average Outdoor
Concentration (µg/m3)
8.19
13.38
14.65
20.11
14.66
14.20
4.25
7.86
6.19
14.18
29.03
17.46
14.95
9.11
3.12
2.34
3.36
4.65
3.37
0.96
12.73
15.40
9.62
12.63
16.85
13.45
2.80

School / Class ID
05 / 12-16 / 08
Hudson / H-11
Hudson / H-15
Hudson / H-52

Average Indoor Concentration (µg/m3)
H-11
H-15
H-52
2.68
2.55
1.82
3.36
3.62
3.02
2.55
3.74
4.09
3.60
5.52
4.92
3.13
4.81
4.41
3.06
4.05
3.65
0.45
1.15
1.23
0.56
0.84
0.04
1.00
0.82
0.28
1.37
0.79
0.28
2.09
1.00
0.93
1.32
1.20
0.29
1.27
0.93
0.37
0.56
0.17
0.33

H-11
0.33
0.25
0.17
0.18
0.21
0.23
0.06
0.07
0.16
0.10
0.07
0.08
0.10
0.04

0.92
1.48
0.47
0.54
0.86
0.46

0.30
0.63
0.14
0.12
0.30
0.24

1.09
1.43
1.72
1.25
1.38
0.27

Configurations Used
05 / 19-23 / 08
05 / 26-30 / 08

Baseline
Baseline
Baseline

HP-PF
HP-PF
HP-PF

RS + HP-PF
RS + HP-PF
RS + HP-PF

0.91
0.88
0.84
0.59
0.81
0.15
0.49
1.07
1.10
1.16
0.79
0.92
0.28

0.10
0.07
0.17
1.64
3.05
0.45
0.31
0.00
0.22
0.17
0.23
0.17

06 / 02-06 / 08
RS + HP-PF
RS + HP-PF
RS + HP-PF

HP-PF = HVAC-based high-performance panel filter
RS = register-based air purifier
SA = stand alone system
PF = conventional / medium efficiency panel filter

37

0.07
0.15
0.14
0.07
0.11
0.04

Average Indoor/Outdoor Ratio
H-15
0.31
0.27
0.25
0.27
0.33
0.29
0.03
0.11
0.13
0.06
0.03
0.07
0.08
0.04
0.29
0.38
0.25
0.13
0.26
0.10
0.04
0.07
0.11
0.09
0.05
0.07
0.03

H-52
0.22
0.23
0.28
0.24
0.30
0.25
0.03
0.01
0.05
0.02
0.03
0.02
0.02
0.02

H-11
67%
75%
83%
82%
79%
77%
6%
93%
84%
90%
93%
92%
90%
4%

0.03

70%
37%
86%
88%
70%
24%

0.02
0.04
0.03
0.01
0.04
0.02
0.00
0.02
0.01
0.02
0.01

93%
85%
86%
93%
89%
4%

Average Removal Efficiency
H-15
H-52
69%
78%
73%
77%
75%
72%
73%
76%
67%
70%
71%
75%
3%
3%
89%
99%
87%
95%
94%
98%
97%
97%
93%
98%
92%
98%
4%
2%
71%
62%
75%
87%
74%
10%
96%
93%
89%
91%
95%
93%
3%

97%
98%
96%
97%
1%
96%
98%
100%
98%
99%
98%
1%

 Hudson Elementary School - PM10 (from particle mass monitor measurements)
Date
5/12/2008
5/13/2008
5/14/2008
5/15/2008
5/16/2008
Average (Week 1)
Standard Deviation
5/19/2008
5/20/2008
5/21/2008
5/22/2008
5/23/2008
Average (Week 2)
Standard Deviation
5/26/2008
5/27/2008
5/28/2008
5/29/2008
5/30/2008
Average (Week 3)
Standard Deviation
6/2/2008
6/3/2008
6/4/2008
6/5/2008
6/6/2008
Average (Week 4)
Standard Deviation

Average Outdoor
Concentration (µg/m3)
34.99
72.87
57.56
73.56
65.32
60.86
15.86
44.62
29.90
99.04
97.14
62.98
66.74
30.94
21.70
18.66
24.67
28.26
23.32
4.10
47.55
55.46
42.76
48.79
58.51
50.61
6.33

School / Class ID
05 / 12-16 / 08
Hudson / H-11
Hudson / H-15
Hudson / H-52

Average Indoor Concentration (µg/m3)
H-11
H-15
H-52
35.13
29.94
9.35
36.97
35.03
14.02
23.93
32.32
13.91
33.55
33.75
11.95
28.13
36.48
18.64
31.54
33.50
13.57
5.38
2.52
3.41
22.67
31.37
3.21
32.03
32.45
7.32
30.71
30.14
5.48
48.80
26.72
6.28
28.55
30.00
3.31
32.55
30.14
5.12
9.77
2.15
1.82

H-11
1.00
0.51
0.42
0.46
0.43
0.56
0.25
0.51
1.07
0.31
0.50
0.45
0.57
0.29

31.71
37.53
20.97
22.01
28.06
7.96

1.46
2.01
0.85
0.78
1.28
0.58

33.55
37.37
40.38
34.10
36.35
3.17

Configurations Used
05 / 19-23 / 08
05 / 26-30 / 08

Baseline
Baseline
Baseline

HP-PF
HP-PF
HP-PF

RS + HP-PF
RS + HP-PF
RS + HP-PF

35.38
29.44
32.20
18.07
28.77
7.54
23.85
38.16
37.82
34.67
23.89
31.68
7.26

3.04
3.62
6.19
5.26
2.38
10.14
8.32
3.91
7.35
6.60
7.27
2.30

06 / 02-06 / 08
RS + HP-PF
RS + HP-PF
RS + HP-PF

HP-PF = HVAC-based high-performance panel filter
RS = register-based air purifier
SA = stand alone system
PF = conventional / medium efficiency panel filter

38

0.61
0.87
0.83
0.58
0.72
0.15

Average Indoor/Outdoor Ratio
H-15
0.86
0.48
0.56
0.46
0.56
0.58
0.16
0.70
1.09
0.30
0.28
0.48
0.57
0.34
1.63
1.58
1.31
0.64
1.29
0.46
0.50
0.69
0.88
0.71
0.41
0.64
0.19

H-52
0.27
0.19
0.24
0.16
0.29
0.23
0.05
0.07
0.24
0.06
0.06
0.05
0.10
0.08

H-11
0%
49%
58%
54%
57%
44%
25%
49%
-7%
69%
50%
55%
43%
29%

0.14

-46%
-101%
15%
22%
-28%
58%

0.15
0.22
0.17
0.04
0.21
0.15
0.09
0.15
0.11
0.14
0.05

39%
13%
17%
42%
28%
15%

Average Removal Efficiency
H-15
H-52
14%
73%
52%
81%
44%
76%
54%
84%
44%
71%
42%
77%
16%
5%
30%
93%
-9%
76%
70%
94%
72%
94%
52%
95%
43%
90%
34%
8%
-63%
-58%
-31%
36%
-29%
46%
50%
31%
12%
29%
59%
36%
19%

86%
85%
78%
83%
4%
79%
85%
91%
85%
89%
86%
5%

 Hudson Elementary School - PM10 (from filter-based measurements)
Date
5/12/2008
5/13/2008
5/14/2008
5/15/2008
5/16/2008
Average (Week 1)
Standard Deviation
5/19/2008
5/20/2008
5/21/2008
5/22/2008
5/23/2008
Average (Week 2)
Standard Deviation
5/26/2008
5/27/2008
5/28/2008
5/29/2008
5/30/2008
Average (Week 3)
Standard Deviation
6/2/2008
6/3/2008
6/4/2008
6/5/2008
6/6/2008
Average (Week 4)
Standard Deviation

Average Outdoor
Concentration (µg/m3)
120
110
130
120
10
120
78
60
130
99
97
29
210
120
99
87
129
56
120
110
82
100
120
106
16

School / Class ID
05 / 12-16 / 08
Hudson / H-11
Hudson / H-15
Hudson / H-52

Average Indoor Concentration (µg/m3)
H-11
H-15
H-52
68
92
46
20
45
43
24
42
26
26
27
46
35
42
17
13
33
35
24
29
61
11
28
39
29
20
15
27
46
31
11
19
17
31
34
11
20
24
11

90
34

30
27
35
27
30
4

Configurations Used
05 / 19-23 / 08
05 / 26-30 / 08

Baseline
Baseline
Baseline

53
23
35
19
33
15
41
30
41
36
39
37
5

HP-PF
HP-PF
HP-PF

RS + HP-PF
RS + HP-PF
RS + HP-PF

H-11
0.57
0.42

Average Indoor/Outdoor Ratio
H-15
H-52
0.77
0.18

H-11
43%
58%

Average Removal Efficiency
H-15
H-52
23%
82%

0.00

0.20

100%

80%

0.48
0.40
0.20
0.78
0.47
0.22
0.15
0.36
0.26

67%
29%
71%
63%
82%
70%
80%
73%
8%

0.25
0.19
0.35
0.22
0.25
0.07
0.34
0.27
0.50
0.36
0.33
0.36
0.08

85%
72%
89%
77%
81%
8%

0.33
0.29
0.29
0.37
0.18
0.30
0.20
0.27
0.08
0.15
0.28
0.11
0.23
0.19
0.08
0.27
0.33
0.35
0.23
0.29
0.06

06 / 02-06 / 08
RS + HP-PF
RS + HP-PF
RS + HP-PF

HP-PF = HVAC-based high-performance panel filter
RS = register-based air purifier
SA = stand alone system
PF = conventional / medium efficiency panel filter

39

0.18

73%
67%
65%
78%
71%
6%

82%

52%
40%
80%
22%
53%
78%
85%
64%
26%
75%
81%
65%
78%
75%
7%
66%
73%
50%
64%
68%
64%
8%

 Dominguez Elementary School - Black Carbon

11/17/2008
11/18/2008
11/19/2008
11/20/2008
11/21/2008
Average (Week 1)
Standard Deviation
11/24/2008
11/25/2008
11/26/2008
11/27/2008
11/28/2008
Average (Week 2)
Standard Deviation
12/1/2008
12/2/2008
12/3/2008
12/4/2008
12/5/2008
Average (Week 3)
Standard Deviation
12/8/2008
12/9/2008
12/10/2008
12/11/2008
12/12/2008
Average (Week 4)
Standard Deviation
12/15/2008
12/16/2008
12/17/2008
12/18/2008
12/19/2008
Average (Week 5)
Standard Deviation

School / Class ID
11 / 18-26 / 08
Dominguez / DZ-7
Dominguez / DZ-9
Dominguez / DZ-11

Average Indoor Concentration (ng/m3)
DZ-7
DZ-9
DZ-11

DZ-7

5,137
8,787
9,243
11,210
8,594
2,533
4,474
5,234

2,149
3,951
3,932
6,967
4,250
1,999
2,918
4,005

4,384
5,935
7,292
8,270
6,470
1,688
4,828
4,944

5,096
6,332
6,616
8,928
6,743
1,599
4,903
5,166

0.42
0.45
0.43
0.62
0.48
0.10
0.65
0.77

0.85
0.68
0.79
0.74
0.76
0.08
1.08
0.94

0.99
0.72
0.72
0.80
0.81
0.13
1.10
0.99

58%
55%
57%
38%
52%
10%
35%
23%

15%
32%
21%
26%
24%
8%
-8%
6%

1%
28%
28%
20%
19%
13%
-10%
1%

4,854
538
8,642
2,434
4,351
3,953
5,734
5,023
2,340
2,112
5,452
2,819
9,169
4,670
4,844
2,769

3,462
768
2,023
268
557
819
766
887
671
290
549
136
515
342
366
169

4,886
82
2,996
217
1,024
354
856
1,089
1,117
269
816
351
892
687
603
279

5,035
186
2,744
187
444
267
346
798
1,092
105
311
249
222
444
266
124

0.71
0.08
0.23
0.11
0.13
0.21
0.13
0.16
0.05
0.14
0.10
0.05
0.06
0.07
0.08
0.04

1.01
0.10
0.35
0.09
0.24
0.09
0.15
0.18
0.11
0.13
0.15
0.12
0.10
0.15
0.13
0.02

1.04
0.08
0.32
0.08
0.10
0.07
0.06
0.12
0.11
0.05
0.06
0.09
0.02
0.10
0.06
0.03

29%
8%
77%
89%
87%
79%
87%
84%
5%
86%
90%
95%
94%
93%
92%
4%

-1%
10%
65%
91%
76%
91%
85%
82%
11%
87%
85%
88%
90%
85%
87%
2%

-4%
8%
68%
92%
90%
93%
94%
88%
11%
95%
94%
91%
98%
90%
94%
3%

3,274

209

432

187

0.06

0.13

0.06

94%

87%

94%

1,976
4,558
3,269
1,291

397
320
308
95

325
904
554
308

109
234
177
63

0.20
0.07
0.11
0.08

0.16
0.20
0.16
0.03

0.05
0.05
0.05
0.00

80%
93%
89%
8%

84%
80%
84%
3%

95%
95%
95%
0%

Average Outdoor
Concentration (ng/m3)

Date

Baseline
Baseline
Baseline

Configurations Used
12 / 01-05 / 08
12 / 08-12 / 08
SA / SA + PF
HP-PF
HP-PF

SA + HP-PF
HP-PF
RS + HP-PF

12 / 15-19 / 08
SA + HP-PF
HP-PF
RS + HP-PF

HP-PF = HVAC-based high-performance panel filter
RS = register-based air purifier
SA = stand alone system
PF = conventional / medium efficiency panel filter

40

Average Indoor/Outdoor Ratio
DZ-9
DZ-11

DZ-7

Average Removal Efficiency
DZ-9
DZ-11

 Dominguez Elementary School - Ultra Fine Particles
Average Outdoor
Concentration (particles/cm3)

Date
11/17/2008
11/18/2008
11/19/2008
11/20/2008
11/21/2008
Average (Week 1)
Standard Deviation
11/24/2008
11/25/2008
11/26/2008
11/27/2008
11/28/2008
Average (Week 2)
Standard Deviation
12/1/2008
12/2/2008
12/3/2008
12/4/2008
12/5/2008
Average (Week 3)
Standard Deviation
12/8/2008
12/9/2008
12/10/2008
12/11/2008
12/12/2008
Average (Week 4)
Standard Deviation
12/15/2008
12/16/2008
12/17/2008
12/18/2008
12/19/2008
Average (Week 5)
Standard Deviation

School / Class ID
11 / 18-26 / 08
Dominguez / DZ-7
Dominguez / DZ-9
Dominguez / DZ-11

Baseline
Baseline
Baseline

Average Indoor Concentration (particles/cm3)
DZ-7
DZ-9
DZ-11

DZ-7

Average Indoor/Outdoor Ratio
DZ-9
DZ-11

DZ-7

Average Removal Efficiency
DZ-9
DZ-11

25,476
42,651
39,794
38,976
36,724
7,663
34,386
31,838

5,422
9,488
10,924
12,874
9,677
3,158
8,720
10,383

12,344
19,540
24,111
18,814
18,702
4,844
18,565
17,528

12,550
24,676
21,528
22,150
20,226
5,295
24,049
23,812

0.21
0.22
0.27
0.33
0.26
0.05
0.25
0.33

0.48
0.46
0.61
0.48
0.51
0.07
0.54
0.55

0.49
0.58
0.54
0.57
0.55
0.04
0.70
0.75

79%
78%
73%
67%
74%
5%
75%
67%

52%
54%
39%
52%
49%
7%
46%
45%

51%
42%
46%
43%
45%
4%
30%
25%

33,112
1,802
41,439
17,370
16,420
16,970
29,061
24,252
10,957
16,048
34,610
32,657
29,250
23,839
27,281
7,492

9,552
1,176
8,349
1,000
1,805
2,768
2,522
3,289
2,911
1,148
2,241
817
1,146
1,262
1,323
539

18,047
733
9,891
1,962
3,508
2,214
5,130
4,541
3,244
9,995
4,785
5,299
3,203
4,040
5,464
2,653

23,930
168
13,190
1,613
2,413
1,469
2,277
4,192
5,046
440
1,755
2,790
812
2,750
1,709
1,080

0.29
0.05
0.20
0.06
0.11
0.16
0.09
0.12
0.06
0.07
0.06
0.03
0.04
0.05
0.05
0.02

0.55
0.01
0.24
0.11
0.21
0.13
0.18
0.17
0.05
0.62
0.14
0.16
0.11
0.17
0.24
0.22

0.72
0.03
0.32
0.09
0.15
0.09
0.08
0.14
0.10
0.03
0.05
0.09
0.03
0.12
0.06
0.04

71%
5%
80%
94%
89%
84%
91%
88%
6%
93%
94%
97%
96%
95%
95%
2%

45%
1%
76%
89%
79%
87%
82%
83%
5%
38%
86%
84%
89%
83%
76%
22%

28%
3%
68%
91%
85%
91%
92%
86%
10%
97%
95%
91%
97%
88%
94%
4%

26,441

1,066

4,072

1,209

0.04

0.15

0.05

96%

85%

95%

23,513
28,783
26,246
2,641

3,355
1,247
1,889
1,272

2,871
7,747
4,897
2,540

1,283
2,101
1,531
495

0.14
0.04
0.08
0.06

0.12
0.27
0.18
0.08

0.05
0.07
0.06
0.01

86%
96%
92%
6%

88%
73%
82%
8%

95%
93%
94%
1%

Configurations Used
12 / 01-05 / 08
12 / 08-12 / 08
SA / SA + PF
HP-PF
HP-PF

SA + HP-PF
HP-PF
RS + HP-PF

12 / 15-19 / 08
SA + HP-PF
HP-PF
RS + HP-PF

HP-PF = HVAC-based high-performance panel filter
RS = register-based air purifier
SA = stand alone system
PF = conventional / medium efficiency panel filter

41

 Dominguez Elementary School - PM2.5 (count)
Date

Average Outdoor
Concentration (particles/ft3)

11/17/2008
11/18/2008
11/19/2008
11/20/2008
11/21/2008
Average (Week 1)
Standard Deviation
11/24/2008
11/25/2008
11/26/2008
11/27/2008
11/28/2008
Average (Week 2)
Standard Deviation
12/1/2008
12/2/2008
12/3/2008
12/4/2008
12/5/2008
Average (Week 3)
Standard Deviation
12/8/2008
12/9/2008
12/10/2008
12/11/2008
12/12/2008
Average (Week 4)
Standard Deviation
12/15/2008
12/16/2008
12/17/2008
12/18/2008
12/19/2008
Average (Week 5)
Standard Deviation

11 / 18-26 / 08
Dominguez / DZ-7
Dominguez / DZ-9
Dominguez / DZ-11

Baseline
Baseline
Baseline

DZ-7

Average Indoor/Outdoor Ratio
DZ-9
DZ-11

DZ-7

Average Removal Efficiency
DZ-9
DZ-11

8,866,226
8,237,390
7,625,250
8,242,955
620,507
8,511,436
6,035,358

1,411,242
1,286,754
1,471,170
1,389,722
94,073
1,151,144
949,498

2,600,108
3,015,586
2,634,126
2,749,940
230,684
3,000,744
1,853,996

3,571,960
2,734,509
3,393,425
3,233,298
441,091
3,943,011
2,542,878

0.16
0.16
0.19
0.17
0.02
0.14
0.16

0.29
0.37
0.35
0.33
0.04
0.35
0.31

0.40
0.33
0.45
0.39
0.06
0.46
0.42

84%
84%
81%
87%
9%
86%
84%

71%
63%
65%
75%
17%
65%
69%

60%
67%
55%
71%
20%
54%
58%

7,273,397
1,750,852
7,115,843
6,472,443
10,298,411
10,129,374
5,018,869
7,806,988
2,325,563
1,539,967
2,540,284
425,792
2,040,036
2,259,506
1,761,117
831,458

1,050,321
142,585
375,673
120,635
190,597
294,693
103,392
216,998
116,301
207,455
271,444
74,899
147,307
157,821
171,785
73,119

2,427,370
810,873
1,197,684
344,786
1,628,370
520,489
368,715
812,009
573,363
112,870
165,653
59,053
136,505
151,593
125,135
41,798

3,242,944
990,043
1,210,391
289,496
753,983
458,324
228,546
588,148
403,128

0.33
0.03
0.17
0.05
0.16
0.05
0.07
0.10
0.06
0.07
0.07
0.14
0.07
0.07
0.08
0.03

0.44
0.03
0.17
0.04
0.07
0.05
0.05
0.08
0.05
0.03
0.17
0.03
0.08
0.08
0.07

85%
2%
95%
98%
98%
97%
98%
97%
1%
87%
89%
82%
93%
93%
89%
4%

67%
3%
83%
95%
84%
95%
93%
90%
6%
93%
93%
86%
93%
93%
92%
3%

56%
3%
83%
96%
93%
95%
95%
92%
5%

85,637
73,412
62,538
190,241
102,957
58,950

0.15
0.02
0.05
0.02
0.02
0.03
0.02
0.03
0.01
0.13
0.11
0.18
0.07
0.07
0.11
0.04

518,108

83,088

73,452

54,664

0.16

0.14

0.11

84%

86%

89%

148,282
108,951
113,440
32,828

83,984
203,523
120,320
72,249

1,067
2,678
19,470
30,490

0.16

0.14

0.11

84%

86%

89%

518,108

School / Class ID

Average Indoor Concentration (particles/ft3)
DZ-7
DZ-9
DZ-11

Configurations Used
12 / 01-05 / 08
12 / 08-12 / 08
SA / SA + PF
HP-PF
HP-PF

SA + HP-PF
HP-PF
RS + HP-PF

12 / 15-19 / 08
SA + HP-PF
HP-PF
RS + HP-PF

HP-PF = HVAC-based high-performance panel filter
RS = register-based air purifier
SA = stand alone system
PF = conventional / medium efficiency panel filter

42

97%
83%
97%
92%
92%
7%

 Dominguez Elementary School - PM2.5 (mass)

11/17/2008
11/18/2008
11/19/2008
11/20/2008
11/21/2008
Average (Week 1)
Standard Deviation
11/24/2008
11/25/2008
11/26/2008
11/27/2008
11/28/2008
Average (Week 2)
Standard Deviation
12/1/2008
12/2/2008
12/3/2008
12/4/2008
12/5/2008
Average (Week 3)
Standard Deviation
12/8/2008
12/9/2008
12/10/2008
12/11/2008
12/12/2008
Average (Week 4)
Standard Deviation
12/15/2008
12/16/2008
12/17/2008
12/18/2008
12/19/2008
Average (Week 5)
Standard Deviation

School / Class ID
11 / 18-26 / 08
Dominguez / DZ-7
Dominguez / DZ-9
Dominguez / DZ-11

Average Indoor Concentration (µg/m3)
DZ-7
DZ-9
DZ-11

DZ-7

4.11
13.52
30.59
16.15
16.09
10.96
17.12
12.77

4.66
9.93
10.79
11.71
9.27
3.16
11.75
15.62

3.70
6.52
14.26
8.78
8.31
4.48
12.16
11.33

11.47
10.89
12.27
11.07
11.43
0.61
18.94
17.13

1.13
0.73
0.35
0.72
0.74
0.32
0.69
1.22

0.90
0.48
0.47
0.54
0.60
0.20
0.71
0.89

2.79
0.81
0.40
0.69
1.17
1.09
1.11
1.34

-13%
27%
65%
28%
26%
32%
31%
-22%

10%
52%
53%
46%
40%
20%
29%
11%

-179%
19%
60%
31%
-17%
109%
-11%
-34%

14.95
3.07
17.46
9.45
35.25
27.93
13.35
20.69
10.67
5.77
7.96
1.80
5.82
10.99
6.47
3.37

13.69
2.73
3.27
2.08
3.24
4.50
1.84
2.99
1.07
2.08
2.55
0.84
1.01
0.94
1.49
0.78

11.74
0.58
5.87
0.87
8.29
1.85
1.71
3.72
3.21
1.10
0.87
1.02
0.79
1.35
1.03
0.22

18.04
1.28
3.81
0.87
2.21
1.27
1.22
1.87
1.19
0.79
0.87
1.10
0.88
1.91
1.11
0.46

0.95
0.38
0.19
0.22
0.09
0.16
0.14
0.16
0.05
0.36
0.32
0.47
0.17
0.09
0.28
0.15

0.80
0.13
0.34
0.09
0.24
0.07
0.13
0.17
0.11
0.19
0.11
0.57
0.14
0.12
0.23
0.20

1.22
0.17
0.22
0.09
0.06
0.05
0.09
0.10
0.07
0.14
0.11
0.61
0.15
0.17
0.24
0.21

5%
38%
81%
78%
91%
84%
86%
84%
5%
64%
68%
53%
83%
91%
72%
15%

20%
13%
66%
91%
76%
93%
87%
83%
11%
81%
89%
43%
86%
88%
77%
20%

-22%
17%
78%
91%
94%
95%
91%
90%
7%
86%
89%
39%
85%
83%
76%
21%

3.31

0.55

0.41

0.57

0.17

0.12

0.17

83%

88%

83%

1.29
6.18
3.59
2.46

0.73
0.59
0.63
0.09

0.75
1.48
0.88
0.55

0.14
0.68
0.46
0.29

0.57
0.10
0.28
0.25

0.58
0.24
0.31
0.24

0.11
0.11
0.13
0.04

43%
90%
72%
25%

42%
76%
69%
24%

89%
89%
87%
4%

Average Outdoor
Concentration (µg/m3)

Date

Baseline
Baseline
Baseline

Configurations Used
12 / 01-05 / 08
12 / 08-12 / 08
SA / SA + PF
HP-PF
HP-PF

SA + HP-PF
HP-PF
RS + HP-PF

12 / 15-19 / 08
SA + HP-PF
HP-PF
RS + HP-PF

HP-PF = HVAC-based high-performance panel filter
RS = register-based air purifier
SA = stand alone system
PF = conventional / medium efficiency panel filter

43

Average Indoor/Outdoor Ratio
DZ-9
DZ-11

DZ-7

Average Removal Efficiency
DZ-9
DZ-11

 Dominguez Elementary School - PM10 (from particle mass monitor measurements)

11/17/2008
11/18/2008
11/19/2008
11/20/2008
11/21/2008
Average (Week 1)
Standard Deviation
11/24/2008
11/25/2008
11/26/2008
11/27/2008
11/28/2008
Average (Week 2)
Standard Deviation
12/1/2008
12/2/2008
12/3/2008
12/4/2008
12/5/2008
Average (Week 3)
Standard Deviation
12/8/2008
12/9/2008
12/10/2008
12/11/2008
12/12/2008
Average (Week 4)
Standard Deviation
12/15/2008
12/16/2008
12/17/2008
12/18/2008
12/19/2008
Average (Week 5)
Standard Deviation

School / Class ID
11 / 18-26 / 08
Dominguez / DZ-7
Dominguez / DZ-9
Dominguez / DZ-11

Average Indoor Concentration (µg/m3)
DZ-7
DZ-9
DZ-11

DZ-7

51.98
52.85
84.85
61.53
62.81
15.32
50.13
48.79

64.34
73.95
62.75
69.08
67.53
5.06
74.55
98.76

34.38
47.85
69.89
58.16
52.57
15.11
76.61
88.63

91.83
79.93
85.40
72.86
82.51
8.06
135.45
128.96

1.24
1.40
0.74
1.12
1.12
0.28
1.49
2.02

0.66
0.91
0.82
0.95
0.83
0.13
1.53
1.82

1.77
1.51
1.01
1.18
1.37
0.34
2.70
2.64

-24%
-40%
26%
-12%
-12%
28%
-49%
-102%

34%
9%
18%
5%
17%
13%
-53%
-82%

-77%
-51%
-1%
-18%
-37%
34%
-170%
-164%

49.46
0.95
86.09
25.06
57.34
52.74
41.97
52.64
22.45
28.57
39.04
21.52
44.75
46.70
36.12
10.78

86.66
17.12
27.81
26.79
13.40
23.08
14.59
21.13
6.76
21.91
23.09
11.43
11.02
11.24
15.74
6.19

82.62
8.49
54.38
16.38
43.07
13.42
17.31
28.91
18.58
19.27
11.40
16.69
12.31
18.51
15.63
3.59

132.21
4.59
37.73
15.78
18.36
12.93
18.03
20.56
9.84
18.93
17.01
18.02
15.96
24.48
18.88
3.32

1.76
0.38
0.32
1.07
0.23
0.44
0.35
0.48
0.34
0.77
0.59
0.53
0.25
0.24
0.48
0.23

1.67
0.20
0.63
0.65
0.75
0.25
0.41
0.54
0.20
0.67
0.29
0.78
0.28
0.40
0.48
0.23

2.67
0.04
0.44
0.63
0.32
0.25
0.43
0.41
0.15
0.66
0.44
0.84
0.36
0.52
0.56
0.19

-76%
38%
68%
-7%
77%
56%
65%
52%
34%
23%
41%
47%
75%
76%
52%
23%

-67%
20%
37%
35%
25%
75%
59%
46%
20%
33%
71%
22%
72%
60%
52%
23%

-167%
4%
56%
37%
68%
75%
57%
59%
15%
34%
56%
16%
64%
48%
44%
19%

15.49

8.83

8.94

14.83

0.57

0.58

0.96

43%

42%

4%

7.99
27.12
16.87
9.64

14.10
10.76
11.23
2.66

19.02
23.70
17.22
7.54

8.39
14.98
12.73
3.76

1.76
0.40
0.91
0.74

2.38
0.87
1.28
0.97

1.05
0.55
0.85
0.26

-76%
60%
9%
74%

-138%
13%
-28%
97%

-5%
45%
15%
26%

Average Outdoor
Concentration (µg/m3)

Date

Baseline
Baseline
Baseline

Configurations Used
12 / 01-05 / 08
12 / 08-12 / 08
SA / SA + PF
HP-PF
HP-PF

SA + HP-PF
HP-PF
RS + HP-PF

12 / 15-19 / 08
SA + HP-PF
HP-PF
RS + HP-PF

HP-PF = HVAC-based high-performance panel filter
RS = register-based air purifier
SA = stand alone system
PF = conventional / medium efficiency panel filter

44

Average Indoor/Outdoor Ratio
DZ-9
DZ-11

DZ-7

Average Removal Efficiency
DZ-9
DZ-11

 Dominguez Elementary School - PM10 (from filter-based measurements)
Average Outdoor
Concentration (µg/m3)

Date
11/17/2008
11/18/2008
11/19/2008
11/20/2008
11/21/2008
Average (Week 1)
Standard Deviation
11/24/2008
11/25/2008
11/26/2008
11/27/2008
11/28/2008
Average (Week 2)
Standard Deviation
12/1/2008
12/2/2008
12/3/2008
12/4/2008
12/5/2008
Average (Week 3)
Standard Deviation
12/8/2008
12/9/2008
12/10/2008
12/11/2008
12/12/2008
Average (Week 4)
Standard Deviation
12/15/2008
12/16/2008
12/17/2008
12/18/2008
12/19/2008
Average (Week 5)
Standard Deviation

School / Class ID
11 / 18-26 / 08
Dominguez / DZ-7
Dominguez / DZ-9
Dominguez / DZ-11

Baseline
Baseline
Baseline

Average Indoor Concentration (µg/m3)
DZ-7
DZ-9
DZ-11

DZ-7

Average Indoor/Outdoor Ratio
DZ-9
DZ-11

DZ-7

Average Removal Efficiency
DZ-9
DZ-11

720
290
33
200
311
293
180
150

940
100
220
120
345
400
220
220

740
250
150
180
330
277
200
140

310
160
38
25
133
133
180
140

1.31
0.34
6.67
0.60
2.23
2.99
1.22
1.47

1.03
0.86
4.55
0.90
1.83
1.81
1.11
0.93

0.43
0.55
1.15
0.13
0.56
0.43
1.00
0.93

-31%
66%
-567%
40%
-123%
299%
-22%
-47%

-3%
14%
-355%
10%
-83%
181%
-11%
7%

57%
45%
-15%
88%
44%
43%
0%
7%

165
21
180
130
150
140
130
146
21
140
130
91
130
140
126
20

220
0
280
170
110
120
91
154
76
150
100
95
82
78
101
29

170
42
180
110
120
90
87
117
38
120
100
100
77
36
87
32

160
28
82
40
36
36
41
47
20
25
30
34
33
87
42
26

1.34
0.17
1.56
1.31
0.73
0.86
0.70
1.03
0.38
1.07
0.77
1.04
0.63
0.56
0.81
0.23

1.02
0.13
1.00
0.85
0.80
0.64
0.67
0.79
0.14
0.86
0.77
1.10
0.59
0.26
0.71
0.31

0.97
0.05
0.46
0.31
0.24
0.26
0.32
0.32
0.08
0.18
0.23
0.37
0.25
0.62
0.33
0.18

-34%
17%
-56%
-31%
27%
14%
30%
-3%
38%
-7%
23%
-4%
37%
44%
19%
23%

-2%
13%
0%
15%
20%
36%
33%
21%
14%
14%
23%
-10%
41%
74%
29%
31%

3%
5%
54%
69%
76%
74%
68%
68%
8%
82%
77%
63%
75%
38%
67%
18%

91

84

70

30

0.92

0.77

0.33

8%

23%

67%

71
93
85
12

79
75
79
5

68
73
70
3

17
23
23
7

1.11
0.81
0.95
0.15

0.96
0.78
0.84
0.10

0.24
0.25
0.27
0.05

-11%
19%
5%
15%

4%
22%
16%
10%

76%
75%
73%
5%

Configurations Used
12 / 01-05 / 08
12 / 08-12 / 08
SA / SA + PF
HP-PF
HP-PF

SA + HP-PF
HP-PF
RS + HP-PF

12 / 15-19 / 08
SA + HP-PF
HP-PF
RS + HP-PF

HP-PF = HVAC-based high-performance panel filter
RS = register-based air purifier
SA = stand alone system
PF = conventional / medium efficiency panel filter

45

 APPENDIX B. Daily average concentrations of individual VOCs measured outside
Dominguez elementary school and inside three of its classrooms (here referred to as DZ7, DZ-9, and DZ-11)
Dominguez Elementary School - Outdoor VOC data
VOC concentration (ppbv)
SPECIATED ORGANIC COMPOUNDS

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

Propylene
Freon 12 (Dichlorodifluoromethane)
Freon 114(1,2-Dichlorotetrafluoroethan)
Chloromethane
Vinyl chloride
Bromomethane
Ethanol
Freon 11(Trichlorofluoromethane)
Isopropyl alcohol(2-Propanol)
Freon 113(1,1,2-Trichlorotrifluoroethan)
Acetone
Carbon disulfide
Methylene chloride
Methyl-tert-butyl ether(MTBE)
trans-1,2-Dichloroethene
n-Hexane
1,-Dichloroethane
Vinyl acetate
2-Butanone(MEK)
cis-1,2-Dichloroethene
Ethyl acetate
Chloroform
Tetrahydrofuran
1,1,1-Trichloroethane
Cyclohexane
Carbon tetrachloride
n-Heptane
1,2-Dichlroethane
Benzene
Trichloroethene
1,2-Dichloropropane
Bromodichloromethane
4-Methyl-2-pentanone(MIBK)
cis-1,3-Dichloropropene
Toluene
trans-1,3-Dichloropropene
1,1,2-Trichloroethane
2-Hexanone(MBK)
Tetrachloroethene
Dibromochloromethane
1,2-Dibromoethane
Chlorobenzene
Ethylbenzene
Xylene (para & meta)
Xylene (Ortho)
Styrene
Bromoform
1,1,2,2-Tetrachloroethane
4-Ethyltoluene
1,3,5-Trimethylbenzene
1,2,4-Trimethylbenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
Benzyl chloride
1,2-Dichlorobenzene
1,2,4-Trichlorobenzene
Hexachloro-1,3-butadiene

1.0
0.5
0.5
0.5
0.5
0.5
1.5
0.5
1.5
0.5
3.0
1.0
1.5
0.5
0.5
0.5
0.5
0.5
1.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.5
0.5
0.5
0.5
0.5
0.5
1.0
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.0
0.5

0.04
0.04
0.03
0.08
0.04
0.05
0.30
0.04
0.03
0.06
0.08
0.04
0.04
0.05
0.04
0.03
0.04
0.05
0.07
0.05
0.07
0.03
0.07
0.04
0.04
0.04
0.04
0.02
0.02
0.04
0.05
0.04
0.06
0.04
0.05
0.04
0.06
0.05
0.04
0.06
0.06
0.04
0.05
0.10
0.05
0.05
0.05
0.08
0.06
0.05
0.08
0.06
0.05
0.06
0.10
0.10
0.30

46

11/18/08

11/19/08

11/20/08

7.7
0.7
0.03
0.6

5.7
0.7

4.5
0.7
0.02
0.6

47

36

7.7
0.07
25
0.04
1.2

0.7

11/21/08

11/24/08

11/25/08

0.6

4.7
0.6
0.02
0.6

3.2
0.6
0.02
0.6

0.7

24

15

5.4
0.06
23
0.06
1

0.07
24
0.3
2.1
0.06
16
0.03
0.6

4.9
0.07
20
0.04
1.1

2
0.06
17
0.04
0.6

0.03
14
0.2
1.9
0.06
11
0.01
0.4

1

1

1.2

1.2

0.5

0.4

1.8

3

3

1.9

1.8

0.9

0.5

0.6
0.08
0.2

0.2
0.06
0.2

0.2
0.03
0.3

0.2
0.03
0.2

0.7
0.08
0.9

0.6
0.07
0.7

0.6
0.07
0.7

0.4
0.08
0.3
0.02
0.7
0.07
0.8

0.2
0.07
0.4

0.2
0.06
0.3

1.2
0.1

1.2
0.09

1
0.05

1.4
0.06

0.6
0.03

0.5
0.05

0.2

0.04
0.2

0.2

0.2

0.09

4.8

3.8

5.5

2.2

1.8

0.2
0.2

0.4
0.09
0.01

0.2

0.1
0.08

0.08

0.7
2.3
0.9
1.4

0.8
2.2
0.9
0.7

0.6
1.9
0.8
0.8
0.01

0.8
2.6
1
0.4

0.4
1.2
0.5
0.9

0.3
1
0.4
0.2

0.8
0.2
0.8

0.8
0.2
0.7

0.6

0.9
0.3
0.9

0.4
0.1
0.4

0.3
0.09
0.3

0.09

0.1

0.09

0.07

0.04

5.2

0.3
0.02

0.6

0.01
0.03

0.02

 Dominguez Elementary School - Outdoor VOC data
VOC concentration (ppbv)
SPECIATED ORGANIC COMPOUNDS

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

Propylene
Freon 12 (Dichlorodifluoromethane)
Freon 114(1,2-Dichlorotetrafluoroethan)
Chloromethane
Vinyl chloride
Bromomethane
Ethanol
Freon 11(Trichlorofluoromethane)
Isopropyl alcohol(2-Propanol)
Freon 113(1,1,2-Trichlorotrifluoroethan)
Acetone
Carbon disulfide
Methylene chloride
Methyl-tert-butyl ether(MTBE)
trans-1,2-Dichloroethene
n-Hexane
1,-Dichloroethane
Vinyl acetate
2-Butanone(MEK)
cis-1,2-Dichloroethene
Ethyl acetate
Chloroform
Tetrahydrofuran
1,1,1-Trichloroethane
Cyclohexane
Carbon tetrachloride
n-Heptane
1,2-Dichlroethane
Benzene
Trichloroethene
1,2-Dichloropropane
Bromodichloromethane
4-Methyl-2-pentanone(MIBK)
cis-1,3-Dichloropropene
Toluene
trans-1,3-Dichloropropene
1,1,2-Trichloroethane
2-Hexanone(MBK)
Tetrachloroethene
Dibromochloromethane
1,2-Dibromoethane
Chlorobenzene
Ethylbenzene
Xylene (para & meta)
Xylene (Ortho)
Styrene
Bromoform
1,1,2,2-Tetrachloroethane
4-Ethyltoluene
1,3,5-Trimethylbenzene
1,2,4-Trimethylbenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
Benzyl chloride
1,2-Dichlorobenzene
1,2,4-Trichlorobenzene
Hexachloro-1,3-butadiene

1.0
0.5
0.5
0.5
0.5
0.5
1.5
0.5
1.5
0.5
3.0
1.0
1.5
0.5
0.5
0.5
0.5
0.5
1.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.5
0.5
0.5
0.5
0.5
0.5
1.0
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.0
0.5

0.04
0.04
0.03
0.08
0.04
0.05
0.30
0.04
0.03
0.06
0.08
0.04
0.04
0.05
0.04
0.03
0.04
0.05
0.07
0.05
0.07
0.03
0.07
0.04
0.04
0.04
0.04
0.02
0.02
0.04
0.05
0.04
0.06
0.04
0.05
0.04
0.06
0.05
0.04
0.06
0.06
0.04
0.05
0.10
0.05
0.05
0.05
0.08
0.06
0.05
0.08
0.06
0.05
0.06
0.10
0.10
0.30

47

11/26/08

12/1/08

12/2/08

1
0.02
0.6

4.6
0.5
0.01
0.5

1.5
0.5
0.02
0.5

0.1

0.05
0.5
0.06
0.07
7
0.2
0.6
0.1
13
0.08
0.3

1.4

0.3

0.3

2.5

5.4

2.3

0.03
21
0.4
4.8
0.07
15
0.03
0.2

0.07
14

0.2

1.6

0.07
0.3

12/3/08

1.4
0.07
18
0.03
0.4

6.4
0.2
1.1
20

0.06

0.08

0.7
0.07

0.2
0.1
0.2

0.07

0.3
0.03

1.2
0.05

0.2

0.08

0.08

0.1

0.9

4.2

0.6

0.9
0.03

0.3
0.02

0.2
0.09

0.4

0.3
0.07
0.04

0.2
0.4
0.2
0.09

0.6
1.9
0.8
0.8

0.08
0.2
0.1
0.06

0.2
0.4
0.2
0.1

0.2
0.05
0.2

0.6
0.1
0.6

0.08
0.02
0.08

0.05

0.06

0.02
0.2
0.04

0.4
0.06
0.04
0.1

0.06
0.1
0.06
0.1
0.04
0.05
0.04
0.04
0.07
0.05

12/4/08

12/5/08

1.4
0.4
0.04
0.7

2.6
0.6
0.05
0.5

0.04
11
0.2
1.7
0.07
17
0.07
0.4
0.04
0.03
0.3
0.03
0.06
4.4
0.03
0.2
0.05
0.03
0.2
0.07
0.2
0.05
0.3
0.09
0.04
0.04
0.2
0.03
1.2
0.03
0.04
0.9
0.07
0.02
0.03
0.04
0.2
0.6
0.3
0.1
0.02
0.06
0.2
0.2
0.04
0.05
0.05
0.04
0.06
0.05

13
0.4
1.5
0.08
19
0.1
0.5

0.5

1.5
0.2
0.08

0.3
0.06
0.4
0.8
0.05

0.09
2.4
0.03
0.1
0.09

0.03
0.3
1
0.4
1
0.04
0.3
0.1
0.3
0.03
0.04
0.03
0.04
0.04

 Dominguez Elementary School - Outdoor VOC data
VOC concentration (ppbv)
SPECIATED ORGANIC COMPOUNDS

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

Propylene
Freon 12 (Dichlorodifluoromethane)
Freon 114(1,2-Dichlorotetrafluoroethan)
Chloromethane
Vinyl chloride
Bromomethane
Ethanol
Freon 11(Trichlorofluoromethane)
Isopropyl alcohol(2-Propanol)
Freon 113(1,1,2-Trichlorotrifluoroethan)
Acetone
Carbon disulfide
Methylene chloride
Methyl-tert-butyl ether(MTBE)
trans-1,2-Dichloroethene
n-Hexane
1,-Dichloroethane
Vinyl acetate
2-Butanone(MEK)
cis-1,2-Dichloroethene
Ethyl acetate
Chloroform
Tetrahydrofuran
1,1,1-Trichloroethane
Cyclohexane
Carbon tetrachloride
n-Heptane
1,2-Dichlroethane
Benzene
Trichloroethene
1,2-Dichloropropane
Bromodichloromethane
4-Methyl-2-pentanone(MIBK)
cis-1,3-Dichloropropene
Toluene
trans-1,3-Dichloropropene
1,1,2-Trichloroethane
2-Hexanone(MBK)
Tetrachloroethene
Dibromochloromethane
1,2-Dibromoethane
Chlorobenzene
Ethylbenzene
Xylene (para & meta)
Xylene (Ortho)
Styrene
Bromoform
1,1,2,2-Tetrachloroethane
4-Ethyltoluene
1,3,5-Trimethylbenzene
1,2,4-Trimethylbenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
Benzyl chloride
1,2-Dichlorobenzene
1,2,4-Trichlorobenzene
Hexachloro-1,3-butadiene

1.0
0.5
0.5
0.5
0.5
0.5
1.5
0.5
1.5
0.5
3.0
1.0
1.5
0.5
0.5
0.5
0.5
0.5
1.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.5
0.5
0.5
0.5
0.5
0.5
1.0
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.0
0.5

0.04
0.04
0.03
0.08
0.04
0.05
0.30
0.04
0.03
0.06
0.08
0.04
0.04
0.05
0.04
0.03
0.04
0.05
0.07
0.05
0.07
0.03
0.07
0.04
0.04
0.04
0.04
0.02
0.02
0.04
0.05
0.04
0.06
0.04
0.05
0.04
0.06
0.05
0.04
0.06
0.06
0.04
0.05
0.10
0.05
0.05
0.05
0.08
0.06
0.05
0.08
0.06
0.05
0.06
0.10
0.10
0.30

48

12/8/08

12/9/08

12/10/08

12/11/08

12/12/08

12/15/08

1.2
0.5
0.03
0.4

0.6
0.03
0.04

1.6
0.5
0.03
0.4

2.3
0.4
0.02
0.5

2.6
0.4
0.03
0.4

1.1
0.4

3.1
0.3
0.7
0.08
4.3
0.03
0.2

13
0.3
3.3
0.08
23
0.05
0.5

6.3
0.3
1
0.08
9.8
0.04
0.3

9.4

9.1

1.6
0.05
13
0.04
0.5

0.06
11
0.04
0.5

14
0.2
4.6
0.05
8
0.01

0.2

0.8

0.2

0.7

0.8

0.2

0.4

1.3

0.8

1.8

1.5

0.8

0.4
0.07
1.4

0.1

0.2

0.04

0.1
0.08
0.1

0.5
0.07
0.5

0.2
0.07

0.3
0.05
0.4

0.4
0.06
0.4

0.1
0.06
0.2

0.3
0.02

1.5
0.05

0.4
0.02

0.6
0.03

0.7
0.03

0.3
0.02

0.04

0.1

0.05

0.08

0.2

0.7

4.5

1.3

2.2

2.2

0.8

0.03
0.03

0.1

0.1
0.04

0.3
0.08

0.3
0.08

0.1
0.04

0.01
0.1
0.3
0.1
0.05

0.6
2.1
0.8
1.7

0.2
0.6
0.2
0.5

0.4
1.1
0.4
0.2

0.4
1.2
0.4
0.3

0.2
0.5
0.2
0.1

0.6
0.2
0.6

0.2
0.05
0.2

0.3
0.09
0.3

0.04
0.02

0.01

0.04

0.02

0.01
0.05
0.02

0.1
0.03
0.1
0.01
0.02
0.01
0.02

0.06
0.4
0.1
0.4
0.03
0.05
0.03
0.08

0.5

0.2
0.05
0.2
0.02

0.03

 Dominguez Elementary School - Outdoor VOC data
VOC concentration (ppbv)
SPECIATED ORGANIC COMPOUNDS

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

Propylene
Freon 12 (Dichlorodifluoromethane)
Freon 114(1,2-Dichlorotetrafluoroethan)
Chloromethane
Vinyl chloride
Bromomethane
Ethanol
Freon 11(Trichlorofluoromethane)
Isopropyl alcohol(2-Propanol)
Freon 113(1,1,2-Trichlorotrifluoroethan)
Acetone
Carbon disulfide
Methylene chloride
Methyl-tert-butyl ether(MTBE)
trans-1,2-Dichloroethene
n-Hexane
1,-Dichloroethane
Vinyl acetate
2-Butanone(MEK)
cis-1,2-Dichloroethene
Ethyl acetate
Chloroform
Tetrahydrofuran
1,1,1-Trichloroethane
Cyclohexane
Carbon tetrachloride
n-Heptane
1,2-Dichlroethane
Benzene
Trichloroethene
1,2-Dichloropropane
Bromodichloromethane
4-Methyl-2-pentanone(MIBK)
cis-1,3-Dichloropropene
Toluene
trans-1,3-Dichloropropene
1,1,2-Trichloroethane
2-Hexanone(MBK)
Tetrachloroethene
Dibromochloromethane
1,2-Dibromoethane
Chlorobenzene
Ethylbenzene
Xylene (para & meta)
Xylene (Ortho)
Styrene
Bromoform
1,1,2,2-Tetrachloroethane
4-Ethyltoluene
1,3,5-Trimethylbenzene
1,2,4-Trimethylbenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
Benzyl chloride
1,2-Dichlorobenzene
1,2,4-Trichlorobenzene
Hexachloro-1,3-butadiene

1.0
0.5
0.5
0.5
0.5
0.5
1.5
0.5
1.5
0.5
3.0
1.0
1.5
0.5
0.5
0.5
0.5
0.5
1.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.5
0.5
0.5
0.5
0.5
0.5
1.0
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.0
0.5

0.04
0.04
0.03
0.08
0.04
0.05
0.30
0.04
0.03
0.06
0.08
0.04
0.04
0.05
0.04
0.03
0.04
0.05
0.07
0.05
0.07
0.03
0.07
0.04
0.04
0.04
0.04
0.02
0.02
0.04
0.05
0.04
0.06
0.04
0.05
0.04
0.06
0.05
0.04
0.06
0.06
0.04
0.05
0.10
0.05
0.05
0.05
0.08
0.06
0.05
0.08
0.06
0.05
0.06
0.10
0.10
0.30

49

12/16/08

12/17/08

12/18/08

12/19/08

2.4
0.4

0.4

1.4
0.4

2.6
0.4

0.5

0.5

0.4

0.4

7.6
0.2
1.7
0.06
10

1.7
0.2

4.3
0.2

8.4
0.2
1.4

0.05
1.2

13

0.3

0.08

6.8
0.02
0.1

0.3

0.3

0.03

0.2

0.3

0.9

0.1

1.1

1.3

0.2
0.06
0.5

0.05

0.1
0.05

0.2
0.05
0.4

0.5
0.02

0.1

0.3

0.6
0.02

1.4

0.2

0.8

1.8

0.2

0.3
0.04

0.1
0.06

0.2
0.7
0.3
0.2

0.03
0.09
0.04

0.1
0.4
0.2
0.04

0.3
0.9
0.4
0.7

0.2

0.03
0.01
0.03

0.1
0.04
0.1

0.3
0.08
0.3

0.01

0.02

0.2
0.01

 Dominguez Elementary School - Outdoor VOC data
VOC concentration (ppbv)
TENTATIVELY IDENTIFIED COMPOUNDS
2,2,3,3-Tetramethyl butane
2,2,4-Trimethyl pentane
2,2-Dimethyl hexane
2,3-Dimethyl pentane
2,4-Dimethyl hexane
2-Methyl butane
2-Methyl hexane
2-Methyl pentane
2-Pentene
3-Methyl hexane
3-Methyl pentane
Acetaldehyde
Butanal
Butane
Difluorochloromethane
Heptanal
Hexamethyl cyclotrisiloxane
Isobutane
Limonene
Methyl cyclohexane
Methyl cyclopentane
Octamethyl cyclotrisiloxane
Pentane
Trimethyl silanol

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

N/A

N/A

N/A

N/A

N/A
N/A
N/A

N/A

N/A
N/A

11/18/08

11/19/08

11/20/08

11/21/08

N/A

2.1

2.1

2.1

2.5

N/A

1.4

1.2

1

1.5

N/A

7.8

7.9

9.2

N/A

1.2

N/A

N/A

3.2

3.3

3.5

3.9

N/A

N/A

N/A

N/A

1.5

1.2

1.1

1.5

N/A

N/A

1.7

1.8

2

2.1

N/A

N/A

1.6

2.1

N/A

N/A

N/A

N/A

6.8

8.6

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

5.5

11/24/08

11/25/08

4.2

3.6

1.6

1.3

9
1.2

1.8
6.5

3.5

2.9

5.6
2.6
4.4

5.1

4.5

4.6

1.4

1.5

1.8

1.8

3.5

3.7

3.1

4.1

2.6

2.3

Dominguez Elementary School - Outdoor VOC data
VOC concentration (ppbv)
TENTATIVELY IDENTIFIED COMPOUNDS
2,2,3,3-Tetramethyl butane
2,2,4-Trimethyl pentane
2,2-Dimethyl hexane
2,3-Dimethyl pentane
2,4-Dimethyl hexane
2-Methyl butane
2-Methyl hexane
2-Methyl pentane
2-Pentene
3-Methyl hexane
3-Methyl pentane
Acetaldehyde
Butanal
Butane
Difluorochloromethane
Heptanal
Hexamethyl cyclotrisiloxane
Isobutane
Limonene
Methyl cyclohexane
Methyl cyclopentane
Octamethyl cyclotrisiloxane
Pentane
Trimethyl silanol

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

2.4

N/A

N/A

2.6

N/A

N/A

1.1

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

1

N/A

N/A

2.2

N/A

N/A

N/A

N/A

N/A

N/A

50

11/26/08

12/1/08

12/2/08

12/3/08

12/4/08

12/5/08
1.2

1
2.6

8.8

1.8

2.2

1.8

3.3

3.2
1.6

1.1
2
2

2.1
8.6

4

2.8

2.4

1.3

1.1

1.7

1

2.6

2.4

1.6

2.4

1.2

1.9

2.3
2.4

5.8

1.7

1.1
4.8

 Dominguez Elementary School - Outdoor VOC data
VOC concentration (ppbv)
TENTATIVELY IDENTIFIED COMPOUNDS
2,2,3,3-Tetramethyl butane
2,2,4-Trimethyl pentane
2,2-Dimethyl hexane
2,3-Dimethyl pentane
2,4-Dimethyl hexane
2-Methyl butane
2-Methyl hexane
2-Methyl pentane
2-Pentene
3-Methyl hexane
3-Methyl pentane
Acetaldehyde
Butanal
Butane
Difluorochloromethane
Heptanal
Hexamethyl cyclotrisiloxane
Isobutane
Limonene
Methyl cyclohexane
Methyl cyclopentane
Octamethyl cyclotrisiloxane
Pentane
Trimethyl silanol

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

1.4

N/A

N/A

1.4

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

12/8/08

12/9/08

12/10/08

12/11/08

12/12/08

1.1

1.2

4

3.9

2.5

2.6

1.4

1.5

2.5

2.6

2.1

1.4

1.4

1.5

1.2

1.2

1.7

1.7

1.9

1.2

4.8

1.5

1.1

3.5

1

Dominguez Elementary School - Outdoor VOC data
VOC concentration (ppbv)
TENTATIVELY IDENTIFIED COMPOUNDS
2,2,3,3-Tetramethyl butane
2,2,4-Trimethyl pentane
2,2-Dimethyl hexane
2,3-Dimethyl pentane
2,4-Dimethyl hexane
2-Methyl butane
2-Methyl hexane
2-Methyl pentane
2-Pentene
3-Methyl hexane
3-Methyl pentane
Acetaldehyde
Butanal
Butane
Difluorochloromethane
Heptanal
Hexamethyl cyclotrisiloxane
Isobutane
Limonene
Methyl cyclohexane
Methyl cyclopentane
Octamethyl cyclotrisiloxane
Pentane
Trimethyl silanol

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

51

12/16/08

12/17/08

12/18/08

12/19/08

1.1
1.3

1.5

1.1

1.1

1.4

12/15/08

 Dominguez Elementary School - Room 7 (DZ-7) VOC data
VOC concentration (ppbv)
SPECIATED ORGANIC COMPOUNDS

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

Propylene
Freon 12 (Dichlorodifluoromethane)
Freon 114(1,2-Dichlorotetrafluoroethan)
Chloromethane
Bromomethane
Ethanol
Freon 11(Trichlorofluoromethane)
Isopropyl alcohol(2-Propanol)
Freon 113(1,1,2-Trichlorotrifluoroethan)
Acetone
1,1-Dichloroethene
Carbon disulfide
Methylene chloride
n-Hexane
2-Butanone(MEK)
Ethyl acetate
Chloroform
Tetrahydrofuran
1,1,1-Trichloroethane
Cyclohexane
Carbon tetrachloride
n-Heptane
Benzene
Trichloroethene
Bromodichloromethane
4-Methyl-2-pentanone(MIBK)
cis-1,3-Dichloropropene
Toluene
trans-1,3-Dichloropropene
1,1,2-Trichloroethane
2-Hexanone(MBK)
Tetrachloroethene
Chlorobenzene
Ethylbenzene
Xylene (para & meta)
Xylene (Ortho)
Styrene
1,1,2,2-Tetrachloroethane
4-Ethyltoluene
1,3,5-Trimethylbenzene
1,2,4-Trimethylbenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
1,2-Dichlorobenzene
1,2,4-Trichlorobenzene
Hexachloro-1,3-butadiene

1.0
0.5
0.5
0.5
0.5
1.5
0.5
1.5
0.5
3.0
0.5
1.0
1.5
0.5
1.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.5
0.5
0.5
0.5
1.0
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.0
0.5

0.04
0.04
0.03
0.08
0.05
0.30
0.04
0.03
0.06
0.08
0.03
0.04
0.04
0.03
0.07
0.07
0.03
0.07
0.04
0.04
0.04
0.04
0.02
0.04
0.04
0.06
0.04
0.05
0.04
0.06
0.05
0.04
0.04
0.05
0.10
0.05
0.05
0.08
0.06
0.05
0.08
0.06
0.05
0.10
0.10
0.30

52

11/18/08

11/19/08

11/20/08

11/21/08

11/24/08

11/25/08

9.5
0.7

4.4
0.6

5.9
0.6

0.8

0.9

5.3
0.7
0.02
0.6

140

310

59

2.8
0.5
0.02
0.92
0.02
480

14
0.08
37

35
0.08
44

3.4
0.6
0.01
0.7
0.02
480
0.3
39
0.06
22

31
0.06
35

6.9
0.06
16

32
0.06
33

0.08
1.8
2.2
2.5
1
0.1
1.7

0.08
1
1
2.3
0.7
0.07
0.4

0.07
2.2
1.8
2.5
0.5
0.1
0.6

0.06
0.7
0.8
1.2
0.3
0.06
0.4

0.1
0.5
0.5
2.7
0.3
0.05
0.4

1.5
0.07
2.6
2.1
0.05

0.8
0.07
1.9
1
0.05

0.5
0.06
0.8
1
0.03

0.4
0.06

0.8
0.04

3.3
0.07
1.1
1.6
0.06

0.4

0.4

0.4

4

0.2

0.9

8.3

4.2

2.8

7.2

4.5

3.2

0.3

0.1

0.1
0.08

0.2
0.4

0.2
0.1

0.5
0.1

1.1
3.9
1.4
1.3

0.6
1.8
0.7
0.5

0.5
1.5
0.7
0.4

1.1
3.7
1.4
0.7

0.7
2.3
0.8
0.4

0.5
1.4
0.6
0.6

1.3
0.4
1.4

0.7
0.2
0.8

0.6
0.6

1.2
0.4
1.3

0.7
0.2
0.7

0.5
0.2
0.6

0.5

0.7

0.5

0.7

0.2

0.8

0.02

0.08
0.6
0.9
1.4
0.3
0.06
0.2
0.02
0.5
0.07

0.8
0.02
380

0.6
0.06

 Dominguez Elementary School - Room 7 (DZ-7) VOC data
VOC concentration (ppbv)
SPECIATED ORGANIC COMPOUNDS

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

Propylene
Freon 12 (Dichlorodifluoromethane)
Freon 114(1,2-Dichlorotetrafluoroethan)
Chloromethane
Bromomethane
Ethanol
Freon 11(Trichlorofluoromethane)
Isopropyl alcohol(2-Propanol)
Freon 113(1,1,2-Trichlorotrifluoroethan)
Acetone
1,1-Dichloroethene
Carbon disulfide
Methylene chloride
n-Hexane
2-Butanone(MEK)
Ethyl acetate
Chloroform
Tetrahydrofuran
1,1,1-Trichloroethane
Cyclohexane
Carbon tetrachloride
n-Heptane
Benzene
Trichloroethene
Bromodichloromethane
4-Methyl-2-pentanone(MIBK)
cis-1,3-Dichloropropene
Toluene
trans-1,3-Dichloropropene
1,1,2-Trichloroethane
2-Hexanone(MBK)
Tetrachloroethene
Chlorobenzene
Ethylbenzene
Xylene (para & meta)
Xylene (Ortho)
Styrene
1,1,2,2-Tetrachloroethane
4-Ethyltoluene
1,3,5-Trimethylbenzene
1,2,4-Trimethylbenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
1,2-Dichlorobenzene
1,2,4-Trichlorobenzene
Hexachloro-1,3-butadiene

1.0
0.5
0.5
0.5
0.5
1.5
0.5
1.5
0.5
3.0
0.5
1.0
1.5
0.5
1.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.5
0.5
0.5
0.5
1.0
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.0
0.5

0.04
0.04
0.03
0.08
0.05
0.30
0.04
0.03
0.06
0.08
0.03
0.04
0.04
0.03
0.07
0.07
0.03
0.07
0.04
0.04
0.04
0.04
0.02
0.04
0.04
0.06
0.04
0.05
0.04
0.06
0.05
0.04
0.04
0.05
0.10
0.05
0.05
0.08
0.06
0.05
0.08
0.06
0.05
0.10
0.10
0.30

53

11/26/08

12/1/08

12/2/08

12/3/08

12/4/08

12/5/08

1.1
0.5
0.02
0.9
0.02
130
0.2
16
0.06
17

3
0.4

0.5

0.4
0.03
1

3.6
0.04
0.7

1.4
0.05
0.7
49
0.3
7.6

0.04
0.2
0.2
0.5
0.3

0.7
0.04
32

0.8

3.9

6.6

19

6.8

160
0.1
5.9
0.05
10

0.02
0.2
0.4
3.3

0.02
0.2
0.07
0.2

0.08
0.2
0.1
1.4

49
0.7
2.5
0.05
12
0.02
0.07
0.2
0.1
1.4

0.04

0.04

0.08
0.04
0.4
0.1
0.03

0.1
0.04

40

0.2
0.06

0.2

0.06

0.3
0.02

0.3

0.05

0.2

0.1

0.4

0.1

0.1

1.3

0.9

0.1

0.2
0.02

0.03

0.2
0.02

0.2
0.6
0.3
0.2

0.1
0.4
0.2
0.1

0.03
0.06
0.03
0.02

0.3
0.08
0.3

0.2
0.04
0.2

0.04
0.01
0.04

0.8
0.02

0.1

0.08

0.3
0.02
0.03
0.2
0.04
0.03
0.08
0.2
0.08
0.05
0.03
0.1
0.05
0.1
0.03
0.06
0.03
0.04
0.04

0.03

0.2
0.03
0.03
0.06
0.1
0.07
0.04
0.05
0.03
0.05
0.03
0.06
0.03
0.04
0.03

0.1
0.03

9
0.09
0.4
0.2
0.4

0.1
0.03
0.3
0.2
0.04
0.1
0.02
0.7

0.05
0.03
0.1
0.3
0.2
0.1
0.03
0.2
0.07
0.2
0.03
0.05
0.03
0.04
0.03

 Dominguez Elementary School - Room 7 (DZ-7) VOC data
VOC concentration (ppbv)
SPECIATED ORGANIC COMPOUNDS

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

Propylene
Freon 12 (Dichlorodifluoromethane)
Freon 114(1,2-Dichlorotetrafluoroethan)
Chloromethane
Bromomethane
Ethanol
Freon 11(Trichlorofluoromethane)
Isopropyl alcohol(2-Propanol)
Freon 113(1,1,2-Trichlorotrifluoroethan)
Acetone
1,1-Dichloroethene
Carbon disulfide
Methylene chloride
n-Hexane
2-Butanone(MEK)
Ethyl acetate
Chloroform
Tetrahydrofuran
1,1,1-Trichloroethane
Cyclohexane
Carbon tetrachloride
n-Heptane
Benzene
Trichloroethene
Bromodichloromethane
4-Methyl-2-pentanone(MIBK)
cis-1,3-Dichloropropene
Toluene
trans-1,3-Dichloropropene
1,1,2-Trichloroethane
2-Hexanone(MBK)
Tetrachloroethene
Chlorobenzene
Ethylbenzene
Xylene (para & meta)
Xylene (Ortho)
Styrene
1,1,2,2-Tetrachloroethane
4-Ethyltoluene
1,3,5-Trimethylbenzene
1,2,4-Trimethylbenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
1,2-Dichlorobenzene
1,2,4-Trichlorobenzene
Hexachloro-1,3-butadiene

1.0
0.5
0.5
0.5
0.5
1.5
0.5
1.5
0.5
3.0
0.5
1.0
1.5
0.5
1.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.5
0.5
0.5
0.5
1.0
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.0
0.5

0.04
0.04
0.03
0.08
0.05
0.30
0.04
0.03
0.06
0.08
0.03
0.04
0.04
0.03
0.07
0.07
0.03
0.07
0.04
0.04
0.04
0.04
0.02
0.04
0.04
0.06
0.04
0.05
0.04
0.06
0.05
0.04
0.04
0.05
0.10
0.05
0.05
0.08
0.06
0.05
0.08
0.06
0.05
0.10
0.10
0.30

54

12/8/08

12/9/08

12/10/08

12/11/08

12/12/08

12/15/08

1
0.03
0.7

1.8
6.3
0.02
0.6

1.7
0.6

0.8

0.5

0.5

0.6

0.5

0.6

26
1.1
3.7
0.03
14

35
0.3
4.6
0.03
9.1

34
0.2
3.6
0.02
9.2

68
0.2
14

27
0.2
3.6

20

10

0.05
0.5
0.1
1.3

0.04
0.3
0.09
0.2

0.04
0.4
0.1
0.6

0.02
0.6
0.2
0.7
0.1

0.02
0.3
0.09
0.5

22
0.3
3.6
0.03
11
0.3
0.07
0.3
0.08
1

0.02

0.06
0.03

0.1
0.03

0.1
0.03
0.1
0.1

0.1

0.3

0.06
0.02

0.1
0.02

0.2
0.02

0.5
0.2

0.1

0.1

0.04

0.08

0.01
0.03

3

0.07

0.3

0.5

0.4

0.7

0.4

0.4

0.1
0.02
0.01
0.05
0.1
0.06
0.02

0.2
0.04

0.02

0.02

0.08

0.07

0.08
0.2
0.1
0.07

0.06
0.2
0.08
0.1

0.1
0.3
0.1
0.08

0.07
0.2
0.08
0.05

0.07
0.2
0.1
0.06

0.05
0.02
0.05
0.01
0.04
0.01
0.02
0.02

0.08
0.03
0.08
0.01
0.05
0.01
0.02
0.02

0.07
0.03
0.07

0.1
0.05
0.2

0.07
0.07

0.1
0.04
0.1

0.02

0.02

0.01

0.07

0.02
0.01

0.03

 Dominguez Elementary School - Room 7 (DZ-7) VOC data
VOC concentration (ppbv)
SPECIATED ORGANIC COMPOUNDS

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

Propylene
Freon 12 (Dichlorodifluoromethane)
Freon 114(1,2-Dichlorotetrafluoroethan)
Chloromethane
Bromomethane
Ethanol
Freon 11(Trichlorofluoromethane)
Isopropyl alcohol(2-Propanol)
Freon 113(1,1,2-Trichlorotrifluoroethan)
Acetone
1,1-Dichloroethene
Carbon disulfide
Methylene chloride
n-Hexane
2-Butanone(MEK)
Ethyl acetate
Chloroform
Tetrahydrofuran
1,1,1-Trichloroethane
Cyclohexane
Carbon tetrachloride
n-Heptane
Benzene
Trichloroethene
Bromodichloromethane
4-Methyl-2-pentanone(MIBK)
cis-1,3-Dichloropropene
Toluene
trans-1,3-Dichloropropene
1,1,2-Trichloroethane
2-Hexanone(MBK)
Tetrachloroethene
Chlorobenzene
Ethylbenzene
Xylene (para & meta)
Xylene (Ortho)
Styrene
1,1,2,2-Tetrachloroethane
4-Ethyltoluene
1,3,5-Trimethylbenzene
1,2,4-Trimethylbenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
1,2-Dichlorobenzene
1,2,4-Trichlorobenzene
Hexachloro-1,3-butadiene

1.0
0.5
0.5
0.5
0.5
1.5
0.5
1.5
0.5
3.0
0.5
1.0
1.5
0.5
1.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.5
0.5
0.5
0.5
1.0
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.0
0.5

0.04
0.04
0.03
0.08
0.05
0.30
0.04
0.03
0.06
0.08
0.03
0.04
0.04
0.03
0.07
0.07
0.03
0.07
0.04
0.04
0.04
0.04
0.02
0.04
0.04
0.06
0.04
0.05
0.04
0.06
0.05
0.04
0.04
0.05
0.10
0.05
0.05
0.08
0.06
0.05
0.08
0.06
0.05
0.10
0.10
0.30

55

12/16/08

12/17/08

12/18/08

12/19/08

0.4

1
0.4

0.4

1.5
0.4

0.6

0.5

0.5

0.6

110
0.2
5.4
0.02
7.9

54
0.2
4.6
0.04
6.5

110
0.2
5.6
0.02
11

56
0.2
3.6

0.06
0.4

0.01
0.2
0.1
0.4
0.4

0.03
0.2
0.09
0.8
0.8

0.08

14

0.3
0.1
0.8

0.2

0.2

0.1
0.02
0.3
0.1

0.05

0.05

0.04

0.5

0.6

1.5

0.9

0.04

0.1

0.2

0.02
0.09
0.3
0.4
0.07

0.1
0.3
0.1
0.07

0.05
0.2
0.06
0.02

0.1
0.4
0.2
0.2

0.2
0.06
0.2
0.02
0.05
0.02
0.04

0.1
0.04
0.1

0.06
0.02
0.06

0.2
0.05
0.2

0.04

0.04

0.04

 Dominguez Elementary School - Room 7 (DZ-7) VOC data
VOC concentration (ppbv)
TENTATIVELY IDENTIFIED COMPOUNDS
.alpha.-Pinene
1,3-Pentadiene
1-Butanol
1R-.alpha.-Pinene
2,2,3,3-Tetramethyl butane
2,2,4-Trimethyl pentane
2,2-Dimethyl hexane
2,3-Dimethyl pentane
2,4-bis(trimethylsiloxane) Benzaldehyde
2-Methyl butane
2-Methyl hexane
2-Methyl pentane
2-Methyl-1,3-butadiene
3-Methyl hexane
3-Methyl pentane
4-Ethyl-2,2,6,6-tetramethyl heptane
Acetaldehyde
Benzaldehyde
Butanal
Butane
Butyl ester acetic acid
Decanal
Difluorochloromethane
D-Limonene
Heptanal
Hexamethyl cyclotrisiloxane
Hexanal
Isobutane
Methyl cyclopentane
Nonanal
Ocatanal
Octamethyl cyclotrisiloxane
Pentane
Tridecane

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

16

N/A

N/A

2.1

N/A

N/A

6.4

N/A

N/A

N/A

N/A

2.5

N/A

N/A

3.5

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A
N/A
N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

7

3.3

12

5

3.8

N/A

N/A

3

1.3

1.3

2.3

1.3

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

11/18/08

11/19/08

11/20/08

11/21/08

11/24/08

2.9
1.8

1.5

1.7

4
2.9
2.7

1.9

1.2

28
6.9

6

12

7.3

2.8

2.4

4.9

2.8

3.2

1.3

2.6

4.4

2.5

2

1.2

2.6

1.5

1.5

1.4

1.6

1.3

2.1

2

2.4

2.5

1.9

N/A

11

5.3

5.4

8.4

5.3

N/A

8.8

5.5

1.5

2.6

56

11/25/08

1.8

1.7

1.5

3.1

3.6

1
1.2

1.8

1.2

2.2
2.3
1.8

68
6.1

3.1

5.4

3.1

2.8

 Dominguez Elementary School - Room 7 (DZ-7) VOC data
VOC concentration (ppbv)
TENTATIVELY IDENTIFIED COMPOUNDS
.alpha.-Pinene
1,3-Pentadiene
1-Butanol
1R-.alpha.-Pinene
2,2,3,3-Tetramethyl butane
2,2,4-Trimethyl pentane
2,2-Dimethyl hexane
2,3-Dimethyl pentane
2,4-bis(trimethylsiloxane) Benzaldehyde
2-Methyl butane
2-Methyl hexane
2-Methyl pentane
2-Methyl-1,3-butadiene
3-Methyl hexane
3-Methyl pentane
4-Ethyl-2,2,6,6-tetramethyl heptane
Acetaldehyde
Benzaldehyde
Butanal
Butane
Butyl ester acetic acid
Decanal
Difluorochloromethane
D-Limonene
Heptanal
Hexamethyl cyclotrisiloxane
Hexanal
Isobutane
Methyl cyclopentane
Nonanal
Ocatanal
Octamethyl cyclotrisiloxane
Pentane
Tridecane

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

11/26/08

N/A

N/A

1.2

N/A

N/A

2.2

N/A

N/A

1.8

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

1

N/A

N/A

1.5

N/A

N/A

57

2.6

2

12/1/08

12/2/08

12/3/08

2.8

2.1

2.7

2.7

3.4

1.8

12/4/08

12/5/08

1.3

1.5

1.1

1

1.9

1.1

1.6

1.6

1.3

1.8

1.5
37

1.7

2.6

1.1

1.1

1.9

 Dominguez Elementary School - Room 7 (DZ-7) VOC data
VOC concentration (ppbv)
TENTATIVELY IDENTIFIED COMPOUNDS
.alpha.-Pinene
1,3-Pentadiene
1-Butanol
1R-.alpha.-Pinene
2,2,3,3-Tetramethyl butane
2,2,4-Trimethyl pentane
2,2-Dimethyl hexane
2,3-Dimethyl pentane
2,4-bis(trimethylsiloxane) Benzaldehyde
2-Methyl butane
2-Methyl hexane
2-Methyl pentane
2-Methyl-1,3-butadiene
3-Methyl hexane
3-Methyl pentane
4-Ethyl-2,2,6,6-tetramethyl heptane
Acetaldehyde
Benzaldehyde
Butanal
Butane
Butyl ester acetic acid
Decanal
Difluorochloromethane
D-Limonene
Heptanal
Hexamethyl cyclotrisiloxane
Hexanal
Isobutane
Methyl cyclopentane
Nonanal
Ocatanal
Octamethyl cyclotrisiloxane
Pentane
Tridecane

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

2.4

N/A

N/A

2

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

58

12/8/08

12/9/08

12/10/08

1.9

4.1

12/11/08

12/12/08

2.4

1.1

4.3

1

1.8

1.9
1.9
1.9

1.3

1.8

1.3

12/15/08

 Dominguez Elementary School - Room 7 (DZ-7) VOC data
VOC concentration (ppbv)
TENTATIVELY IDENTIFIED COMPOUNDS
.alpha.-Pinene
1,3-Pentadiene
1-Butanol
1R-.alpha.-Pinene
2,2,3,3-Tetramethyl butane
2,2,4-Trimethyl pentane
2,2-Dimethyl hexane
2,3-Dimethyl pentane
2,4-bis(trimethylsiloxane) Benzaldehyde
2-Methyl butane
2-Methyl hexane
2-Methyl pentane
2-Methyl-1,3-butadiene
3-Methyl hexane
3-Methyl pentane
4-Ethyl-2,2,6,6-tetramethyl heptane
Acetaldehyde
Benzaldehyde
Butanal
Butane
Butyl ester acetic acid
Decanal
Difluorochloromethane
D-Limonene
Heptanal
Hexamethyl cyclotrisiloxane
Hexanal
Isobutane
Methyl cyclopentane
Nonanal
Ocatanal
Octamethyl cyclotrisiloxane
Pentane
Tridecane

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

59

12/16/08

12/17/08

12/18/08

12/19/08

1.2

1

 Dominguez Elementary School - Room 9 (DZ-9) VOC data
VOC concentration (ppbv)
SPECIATED ORGANIC COMPOUNDS

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

Propylene
Freon 12 (Dichlorodifluoromethane)
Freon 114(1,2-Dichlorotetrafluoroethan)
Chloromethane
Vinyl chloride
Bromomethane
Ethanol
Freon 11(Trichlorofluoromethane)
Isopropyl alcohol(2-Propanol)
Freon 113(1,1,2-Trichlorotrifluoroethan)
Acetone
Carbon disulfide
Methylene chloride
n-Hexane
2-Butanone(MEK)
cis-1,2-Dichloroethene
Ethyl acetate
Chloroform
Tetrahydrofuran
1,1,1-Trichloroethane
Cyclohexane
Carbon tetrachloride
n-Heptane
Benzene
Trichloroethene
4-Methyl-2-pentanone(MIBK)
cis-1,3-Dichloropropene
Toluene
trans-1,3-Dichloropropene
2-Hexanone(MBK)
Tetrachloroethene
Dibromochloromethane
Chlorobenzene
Ethylbenzene
Xylene (para & meta)
Xylene (Ortho)
Styrene
1,1,2,2-Tetrachloroethane
4-Ethyltoluene
1,3,5-Trimethylbenzene
1,2,4-Trimethylbenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
1,2-Dichlorobenzene
1,2,4-Trichlorobenzene
Hexachloro-1,3-butadiene

1.0
0.5
0.5
0.5
0.5
0.5
1.5
0.5
1.5
0.5
3.0
1.0
1.5
0.5
1.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.5
0.5
0.5
0.5
0.5
1.0
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.0
0.5

0.04
0.04
0.03
0.08
0.04
0.05
0.30
0.04
0.03
0.06
0.08
0.04
0.04
0.03
0.07
0.05
0.07
0.03
0.07
0.04
0.04
0.04
0.04
0.02
0.04
0.06
0.04
0.05
0.04
0.05
0.04
0.06
0.04
0.05
0.10
0.05
0.05
0.08
0.06
0.05
0.08
0.06
0.05
0.10
0.10
0.30

60

11/18/08

11/19/08
0.6

0.7

0.7

200

580

17
25
0.09
1.2
1.1
1.8

160
0.06
27
0.06
1
1.3
2.2

1.6
0.08
0.5

0.7
0.07
0.2

0.8
0.07
1.2
1.2
0.09
0.5

11/20/08
4.1
0.6
0.02
0.7

11/21/08

11/24/08

11/25/08

0.02
0.7

4.4
0.6
0.02
0.8

2.8
0.5
0.02
0.8

0.05
150
0.3
20
0.06
17
0.04
0.6
1.4
2.5

120

520

92
0.06
27
0.09
1.4
1.2
2.3

270
0.06
31
0.05
0.6
0.7
2.3

0.02
180
0.2
200
0.06
26
0.04
0.4
0.5
2.5

0.8
0.09
0.4
0.02
1.7
0.07
0.9
1.3
0.06
0.4

0.4
0.05
0.3

0.3
0.05
0.2

1.7
0.07
4.7
1.1
0.07
1.3

0.3
0.07
0.1
0.02
0.8
0.07
0.9
1.1
0.05
0.3

0.5
0.06
0.6
0.8
0.03
0.4

0.3
0.06

5.4

5.1

4.3

6.4

3.8

3

0.3

0.1
0.2

0.2
0.1

0.2
0.2

0.4
0.1

0.4
0.09

0.7
2.4
0.9
1.1

0.7
2
0.9
0.6

0.6
1.8
0.7
0.6

0.9
2.9
1.1
0.5

0.5
1.7
0.7
1.1

0.4
1.1
0.5
0.4

0.8
0.2
0.9

0.7
0.2
0.7

0.6
0.6

0.9
0.3
1

0.6
0.2
0.7

0.4
0.1
0.5

0.08

0.09

0.09

0.1

0.1

0.08

0.03

0.6
0.06
0.4

0.03

 Dominguez Elementary School - Room 9 (DZ-9) VOC data
VOC concentration (ppbv)
SPECIATED ORGANIC COMPOUNDS

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

Propylene
Freon 12 (Dichlorodifluoromethane)
Freon 114(1,2-Dichlorotetrafluoroethan)
Chloromethane
Vinyl chloride
Bromomethane
Ethanol
Freon 11(Trichlorofluoromethane)
Isopropyl alcohol(2-Propanol)
Freon 113(1,1,2-Trichlorotrifluoroethan)
Acetone
Carbon disulfide
Methylene chloride
n-Hexane
2-Butanone(MEK)
cis-1,2-Dichloroethene
Ethyl acetate
Chloroform
Tetrahydrofuran
1,1,1-Trichloroethane
Cyclohexane
Carbon tetrachloride
n-Heptane
Benzene
Trichloroethene
4-Methyl-2-pentanone(MIBK)
cis-1,3-Dichloropropene
Toluene
trans-1,3-Dichloropropene
2-Hexanone(MBK)
Tetrachloroethene
Dibromochloromethane
Chlorobenzene
Ethylbenzene
Xylene (para & meta)
Xylene (Ortho)
Styrene
1,1,2,2-Tetrachloroethane
4-Ethyltoluene
1,3,5-Trimethylbenzene
1,2,4-Trimethylbenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
1,2-Dichlorobenzene
1,2,4-Trichlorobenzene
Hexachloro-1,3-butadiene

1.0
0.5
0.5
0.5
0.5
0.5
1.5
0.5
1.5
0.5
3.0
1.0
1.5
0.5
1.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.5
0.5
0.5
0.5
0.5
1.0
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.0
0.5

0.04
0.04
0.03
0.08
0.04
0.05
0.30
0.04
0.03
0.06
0.08
0.04
0.04
0.03
0.07
0.05
0.07
0.03
0.07
0.04
0.04
0.04
0.04
0.02
0.04
0.06
0.04
0.05
0.04
0.05
0.04
0.06
0.04
0.05
0.10
0.05
0.05
0.08
0.06
0.05
0.08
0.06
0.05
0.10
0.10
0.30

61

11/26/08

12/1/08

12/2/08

12/3/08

12/4/08

12/5/08

0.9
0.5
0.02
0.7

4
0.5

1.1
0.4
0.02
0.6

0.7
0.4
0.04
0.8
0.04
0.05
59
0.3
8.7
0.09
7.8
0.07
0.2
0.2
0.8
0.02

1.1
0.5
0.05
0.6

2.6
0.6
0.05
0.6

61
0.3
4.2
0.08
23
0.09
0.4
0.3
4

84
0.4
39
0.1
16
0.1
0.5
0.5
1

110
0.2
41
0.06
13
0.03
0.2
0.2
0.4

0.7
0.05
210
15
0.06
23
0.04
0.4
1.4
2.2

82
0.2
5.4
0.07
16
0.05
0.1
0.2
2.8

0.4

0.3
0.06
0.4

0.1
0.06

0.7
0.07

0.2
0.02
0.1

1.2
0.04
0.2

1.2

4.9

0.8

0.1
0.06

0.3

0.02

0.2
0.4
0.2
0.1

0.6
1.9
0.8
0.9

0.09
0.2
0.1
0.07

0.1
0.3
0.2
0.08

0.2
0.4
0.2
0.09

0.2
0.05
0.2

0.7
0.2
0.7

0.1
0.03
0.1

0.06
0.02

0.1

0.03

0.2
0.09
0.3
0.03
0.04
0.03
0.04
0.03

0.2
0.06
0.2
0.03
0.04
0.03
0.04
0.03

0.03

0.2
0.08

0.1
0.07
0.6
0.2
0.2

0.1
0.08
0.2
0.03
0.2
0.02
0.6
0.02
0.05

0.2
0.07
0.2
0.4
0.07
0.2
1.2
0.02
0.4
0.07
0.02

0.4
0.07
0.4
0.9
0.05
0.08
0.02
2.6

0.1
0.02
0.03
0.4
1.1
0.4
0.9
0.04
0.4
0.1
0.4
0.03
0.05
0.03
0.03
0.03

 Dominguez Elementary School - Room 9 (DZ-9) VOC data
VOC concentration (ppbv)
SPECIATED ORGANIC COMPOUNDS

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

Propylene
Freon 12 (Dichlorodifluoromethane)
Freon 114(1,2-Dichlorotetrafluoroethan)
Chloromethane
Vinyl chloride
Bromomethane
Ethanol
Freon 11(Trichlorofluoromethane)
Isopropyl alcohol(2-Propanol)
Freon 113(1,1,2-Trichlorotrifluoroethan)
Acetone
Carbon disulfide
Methylene chloride
n-Hexane
2-Butanone(MEK)
cis-1,2-Dichloroethene
Ethyl acetate
Chloroform
Tetrahydrofuran
1,1,1-Trichloroethane
Cyclohexane
Carbon tetrachloride
n-Heptane
Benzene
Trichloroethene
4-Methyl-2-pentanone(MIBK)
cis-1,3-Dichloropropene
Toluene
trans-1,3-Dichloropropene
2-Hexanone(MBK)
Tetrachloroethene
Dibromochloromethane
Chlorobenzene
Ethylbenzene
Xylene (para & meta)
Xylene (Ortho)
Styrene
1,1,2,2-Tetrachloroethane
4-Ethyltoluene
1,3,5-Trimethylbenzene
1,2,4-Trimethylbenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
1,2-Dichlorobenzene
1,2,4-Trichlorobenzene
Hexachloro-1,3-butadiene

1.0
0.5
0.5
0.5
0.5
0.5
1.5
0.5
1.5
0.5
3.0
1.0
1.5
0.5
1.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.5
0.5
0.5
0.5
0.5
1.0
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.0
0.5

0.04
0.04
0.03
0.08
0.04
0.05
0.30
0.04
0.03
0.06
0.08
0.04
0.04
0.03
0.07
0.05
0.07
0.03
0.07
0.04
0.04
0.04
0.04
0.02
0.04
0.06
0.04
0.05
0.04
0.05
0.04
0.06
0.04
0.05
0.10
0.05
0.05
0.08
0.06
0.05
0.08
0.06
0.05
0.10
0.10
0.30

62

12/8/08

12/9/08

12/10/08

12/11/08

12/12/08

12/15/08

0.5
0.03
0.5

0.6
0.03
0.5

1.4
0.5
0.03
0.4

4.9
0.7

2.6
0.4

1.1
0.4

0.5

0.4

0.5

68
0.3
4.9
0.09
14
0.03
0.3
0.2
1.7

30
0.3
43
0.09
15
0.05
0.6
0.5
0.9

110

68
0.4
6.2
0.06
25
0.03
0.8
0.9
2

21
0.2
36
0.06
17

110
0.2
20
0.05
12

0.6
0.6
2.4

0.2
0.2
1.3

0.1
0.06

0.3
0.06
0.7

0.3
0.07

0.2

0.2
0.08
0.3
0.02
0.08

0.3
0.08
0.5
0.8
0.04
0.1

1.1
0.07
1.6
0.4
0.02
0.3

0.6
0.06
0.8
1.1
0.06
0.1

0.4
0.06
0.6
0.6
0.02
0.1

0.2
0.05
0.6
0.3
0.02
0.2

1

2.2

1.4

4.4

2.3

0.8

0.1
0.03

0.08

0.2
0.04

0.1
0.1

0.4
0.09

0.2
0.03

0.1
0.4
0.2
0.07

0.3
1
0.4
0.4

0.2
0.8
0.2
0.6

0.6
1.9
0.7
0.7

0.3
1.1
0.4
0.3

0.1
0.4
0.2
0.1

0.1
0.04
0.1
0.01
0.02
0.01
0.02

0.3
0.1
0.3
0.01
0.02
0.01
0.02
0.01

0.2
0.06
0.2

0.6
0.2
0.6

0.3
0.1
0.4

0.1
0.05
0.2

0.02

0.04
0.02
0.04
0.02

0.03
0.01
0.04

0.02

53
0.08
15
0.05
0.2
0.6
1.2

0.02
0.01

0.03

 Dominguez Elementary School - Room 9 (DZ-9) VOC data
VOC concentration (ppbv)
SPECIATED ORGANIC COMPOUNDS

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

Propylene
Freon 12 (Dichlorodifluoromethane)
Freon 114(1,2-Dichlorotetrafluoroethan)
Chloromethane
Vinyl chloride
Bromomethane
Ethanol
Freon 11(Trichlorofluoromethane)
Isopropyl alcohol(2-Propanol)
Freon 113(1,1,2-Trichlorotrifluoroethan)
Acetone
Carbon disulfide
Methylene chloride
n-Hexane
2-Butanone(MEK)
cis-1,2-Dichloroethene
Ethyl acetate
Chloroform
Tetrahydrofuran
1,1,1-Trichloroethane
Cyclohexane
Carbon tetrachloride
n-Heptane
Benzene
Trichloroethene
4-Methyl-2-pentanone(MIBK)
cis-1,3-Dichloropropene
Toluene
trans-1,3-Dichloropropene
2-Hexanone(MBK)
Tetrachloroethene
Dibromochloromethane
Chlorobenzene
Ethylbenzene
Xylene (para & meta)
Xylene (Ortho)
Styrene
1,1,2,2-Tetrachloroethane
4-Ethyltoluene
1,3,5-Trimethylbenzene
1,2,4-Trimethylbenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
1,2-Dichlorobenzene
1,2,4-Trichlorobenzene
Hexachloro-1,3-butadiene

1.0
0.5
0.5
0.5
0.5
0.5
1.5
0.5
1.5
0.5
3.0
1.0
1.5
0.5
1.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.5
0.5
0.5
0.5
0.5
1.0
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.0
0.5

0.04
0.04
0.03
0.08
0.04
0.05
0.30
0.04
0.03
0.06
0.08
0.04
0.04
0.03
0.07
0.05
0.07
0.03
0.07
0.04
0.04
0.04
0.04
0.02
0.04
0.06
0.04
0.05
0.04
0.05
0.04
0.06
0.04
0.05
0.10
0.05
0.05
0.08
0.06
0.05
0.08
0.06
0.05
0.10
0.10
0.30

63

12/16/08

12/17/08

12/18/08

12/19/08

1.7
0.4

2.6
0.4

0.4

0.4
0.4
0.02
0.5

0.4

0.4

76
0.2
2.7
0.05
5.8
0.01
0.1
0.1
0.2

52
0.2
9.6
0.05
9.9
0.02
0.1
0.3
0.9

40
0.2
31
0.05
16
0.03
0.3
0.4
1

0.3
0.05
1.3

0.1

0.2
0.06
3.9
0.1
0.02
0.05

0.1

0.3
0.05
1.4
0.6
0.02
0.06

1.7

0.4

6.5

2

0.06

0.02

0.2
0.8
0.3
0.25

0.05
0.2
0.08
0.03

0.2
0.6
0.3
0.06

0.3
1
0.4
0.8

0.3
0.09
0.2

0.06
0.02
0.07

0.2
0.3
0.2

0.3
0.09
0.3

0.02

0.02

0.02

0.03

54
0.2
2.4
19
0.02
0.4
0.3
2

0.5

0.3
0.05
3.7
0.6

0.3
0.04

0.02

 Dominguez Elementary School - Room 9 (DZ-9) VOC data
VOC concentration (ppbv)
TENTATIVELY IDENTIFIED COMPOUNDS
4-Bromofluorobenzene
1,3-Dimethyl cyclohexane
1,3-Pentadiene
1,4-Pentadiene
1-Butanol
1-Dodecene
1S-.alpha.-Pinene
2,2,3,3-Tetramethyl butane
2,2,4,6,6-Pentamethyl heptane
2,2,4-Trimethyl pentane
2,2-Dimethyl hexane
2,3,3-Trimethyl pentane
2,3-Dimethyl pentane
2-Methyl butane
2-Methyl hexane
2-Methyl pentane
2-Methyl-1,3-butadiene
3-Methyl butanal
3-Methyl hexane
3-Methyl pentane
Acetaldehyde
Benzaldehyde
Butanal
Butane
Difluorochloromethane
D-Limonene
Heptanal
Hexamethyl cyclotrisiloxane
Hexanal
Isobutane
Methyl cyclohexane
Methyl cyclopentane
Nonanal
Ocatanal
Octamethyl cyclotrisiloxane
Octane
Pentane
trans-1,4-Dimethyl cyclohexane

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

11/18/08

11/19/08

11/20/08

11/21/08

11/24/08

11/25/08

N/A

N/A

9.84

10.13

10.69

11.36

11.97

11.86

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

1.5

N/A

N/A

8.2

7.4

N/A

N/A

1.3

1.4

N/A

N/A

3.5

3.3

N/A

N/A

1.6

N/A

N/A

N/A

N/A

1.5

1.5

1.3

1.5

N/A

N/A

1.9

1.8

2.1

2

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

5.9

6.1

N/A

N/A

26

3.6

N/A

N/A

1.1

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

1.4
1.4
1.2

1.9
1.5

2.1
9.4
2.3

5.3

2.1

13
1.2

2.4
1.1
9

8.9

3.6

3.7

3.8

2

1.5

1.5

1.6

8.3

2.4

2.4

1.9

2

3

6.7

4.3

3.1

19
1.7

4

5.1

4.6

1.9

3.5

2.2

N/A

2

2

N/A

N/A

2

N/A

N/A

10

N/A

N/A

N/A

N/A

N/A

N/A

64

4.6

5.3

1.1
1.6

3.6

1.6

4

1.9

1.7

4.1

3

16

 Dominguez Elementary School - Room 9 (DZ-9) VOC data
VOC concentration (ppbv)
TENTATIVELY IDENTIFIED COMPOUNDS
4-Bromofluorobenzene
1,3-Dimethyl cyclohexane
1,3-Pentadiene
1,4-Pentadiene
1-Butanol
1-Dodecene
1S-.alpha.-Pinene
2,2,3,3-Tetramethyl butane
2,2,4,6,6-Pentamethyl heptane
2,2,4-Trimethyl pentane
2,2-Dimethyl hexane
2,3,3-Trimethyl pentane
2,3-Dimethyl pentane
2-Methyl butane
2-Methyl hexane
2-Methyl pentane
2-Methyl-1,3-butadiene
3-Methyl butanal
3-Methyl hexane
3-Methyl pentane
Acetaldehyde
Benzaldehyde
Butanal
Butane
Difluorochloromethane
D-Limonene
Heptanal
Hexamethyl cyclotrisiloxane
Hexanal
Isobutane
Methyl cyclohexane
Methyl cyclopentane
Nonanal
Ocatanal
Octamethyl cyclotrisiloxane
Octane
Pentane
trans-1,4-Dimethyl cyclohexane

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

11/26/08

12/1/08

12/2/08

12/3/08

12/4/08

12/5/08

N/A

N/A

11.53

9.44

9.66

8.08

9.07

8.76

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

3.1

N/A

N/A

1.6

N/A

N/A

N/A

N/A

N/A

N/A

1.9

N/A

N/A

1.6

N/A

N/A

1.4

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

65

1
1.3
1.1

2

8.5

2.1

1.3

2.6

1.1

1.2

3

1.7

1.8

2.6

7

1.4

2.1

1.1
8.1

3.5
1.9

1

1.6

1.9

2.9

2

2.2
1.1
2.5
1
1.6

5.5

2.1

2
1.6
1.3
1.3

3.4
4.8

 Dominguez Elementary School - Room 9 (DZ-9) VOC data
VOC concentration (ppbv)
TENTATIVELY IDENTIFIED COMPOUNDS
4-Bromofluorobenzene
1,3-Dimethyl cyclohexane
1,3-Pentadiene
1,4-Pentadiene
1-Butanol
1-Dodecene
1S-.alpha.-Pinene
2,2,3,3-Tetramethyl butane
2,2,4,6,6-Pentamethyl heptane
2,2,4-Trimethyl pentane
2,2-Dimethyl hexane
2,3,3-Trimethyl pentane
2,3-Dimethyl pentane
2-Methyl butane
2-Methyl hexane
2-Methyl pentane
2-Methyl-1,3-butadiene
3-Methyl butanal
3-Methyl hexane
3-Methyl pentane
Acetaldehyde
Benzaldehyde
Butanal
Butane
Difluorochloromethane
D-Limonene
Heptanal
Hexamethyl cyclotrisiloxane
Hexanal
Isobutane
Methyl cyclohexane
Methyl cyclopentane
Nonanal
Ocatanal
Octamethyl cyclotrisiloxane
Octane
Pentane
trans-1,4-Dimethyl cyclohexane

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

12/8/08

12/9/08

12/10/08

12/11/08

12/12/08

12/15/08

N/A

N/A

8.61

8.41

8.22

9.55

9.52

10.21

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

1.9

1.1

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

66

1.9

1

1.6
1.2

2.7

1.4

4.5

1.6

1.2

1.7

3.2

3.2

2.4

1.4
1.8

1.2

1.1
1

2.1

1.2

3.5

2.3
2.3

1.3

1.3

1.8

1.6

1.5

1.1

 Dominguez Elementary School - Room 9 (DZ-9) VOC data
VOC concentration (ppbv)
TENTATIVELY IDENTIFIED COMPOUNDS
4-Bromofluorobenzene
1,3-Dimethyl cyclohexane
1,3-Pentadiene
1,4-Pentadiene
1-Butanol
1-Dodecene
1S-.alpha.-Pinene
2,2,3,3-Tetramethyl butane
2,2,4,6,6-Pentamethyl heptane
2,2,4-Trimethyl pentane
2,2-Dimethyl hexane
2,3,3-Trimethyl pentane
2,3-Dimethyl pentane
2-Methyl butane
2-Methyl hexane
2-Methyl pentane
2-Methyl-1,3-butadiene
3-Methyl butanal
3-Methyl hexane
3-Methyl pentane
Acetaldehyde
Benzaldehyde
Butanal
Butane
Difluorochloromethane
D-Limonene
Heptanal
Hexamethyl cyclotrisiloxane
Hexanal
Isobutane
Methyl cyclohexane
Methyl cyclopentane
Nonanal
Ocatanal
Octamethyl cyclotrisiloxane
Octane
Pentane
trans-1,4-Dimethyl cyclohexane

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

12/16/08

12/17/08

12/18/08

12/19/08

N/A

N/A

9.66

9.52

9.74

10.01

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

1.2

N/A

N/A

1.4

N/A

N/A

1.6

N/A

N/A

2.4

N/A

N/A

1.1

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

67

1.8

5

1.1
1.1

1.5

2.2
1.2

5.1

1.3

1.5

1

1.2

1.1

1.2

2.7
1

 Dominguez Elementary School - Room 11 (DZ-11) VOC data
VOC concentration (ppbv)
SPECIATED ORGANIC COMPOUNDS

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

Propylene
Freon 12 (Dichlorodifluoromethane)
Freon 114(1,2-Dichlorotetrafluoroethan)
Chloromethane
Vinyl chloride
Bromomethane
Ethanol
Freon 11(Trichlorofluoromethane)
Isopropyl alcohol(2-Propanol)
Freon 113(1,1,2-Trichlorotrifluoroethan)
Acetone
Carbon disulfide
Methylene chloride
n-Hexane
2-Butanone(MEK)
Ethyl acetate
Chloroform
Tetrahydrofuran
Cyclohexane
Carbon tetrachloride
n-Heptane
Benzene
Trichloroethene
Bromodichloromethane
4-Methyl-2-pentanone(MIBK)
cis-1,3-Dichloropropene
Toluene
trans-1,3-Dichloropropene
1,1,2-Trichloroethane
2-Hexanone(MBK)
Tetrachloroethene
Chlorobenzene
Ethylbenzene
Xylene (para & meta)
Xylene (Ortho)
Styrene
Bromoform
1,1,2,2-Tetrachloroethane
4-Ethyltoluene
1,3,5-Trimethylbenzene
1,2,4-Trimethylbenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
1,2-Dichlorobenzene
1,2,4-Trichlorobenzene
Hexachloro-1,3-butadiene

1.0
0.5
0.5
0.5
0.5
0.5
1.5
0.5
1.5
0.5
3.0
1.0
1.5
0.5
1.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.5
0.5
0.5
0.5
1.0
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.0
0.5

0.04
0.04
0.03
0.08
0.04
0.05
0.30
0.04
0.03
0.06
0.08
0.04
0.04
0.03
0.07
0.07
0.03
0.07
0.04
0.04
0.04
0.02
0.04
0.04
0.06
0.04
0.05
0.04
0.06
0.05
0.04
0.04
0.05
0.10
0.05
0.05
0.05
0.08
0.06
0.05
0.08
0.06
0.05
0.10
0.10
0.30

68

11/18/08

11/19/08

11/20/08

11/21/08

11/24/08

11/25/08

5.4
0.7

3.7
0.5
0.01
0.7

6
0.7
0.8

4.5
0.6
0.01
0.8

2.9
0.6
0.01
0.8

0.03
170

270

12
0.06
28
0.05
1.8
1.5
2.4
0.5
0.09
0.5
9.6
0.07
1.1
1.6
0.07

11
0.06
29
0.06
0.6
0.6
2.5
0.2
0.05
0.3
0.5
0.06
0.6
0.8
0.02

0.9

0.8

530

150

70
34
0.08
1.3
1.3
2.4
0.9
0.1
0.7
1
0.07
3.6
1.5
0.07

22
0.07
30
0.07
1
1.1
2.8
0.5
0.08
0.6
0.7
0.07
0.7
1.2
0.07

0.04
180
0.3
15
0.06
20
0.07
0.6
1.9
1.8
0.3
0.06
0.1
2.2
0.07
1.7
1
0.03

42

0.4

0.7

0.5

0.3

0.7

6.8

4.9

3.3

9.6

3.2

2.4

0.3

0.2
0.2

0.1
0.08

0.3

0.4
0.1

0.2
0.09

0.9
3.1
1.1
1.5

0.8
2.3
0.9
0.6

0.5
1.7
0.7
0.4
0.01

1.7
5.7
1.7
0.7

0.5
1.7
0.7
1.3

0.4
1.2
0.6
0.4

1.1
0.3
1.1

0.8
0.2
0.8

0.6
0.6

1.2
0.3
1.2

0.6
0.2
0.6

0.5
0.1
0.5

0.2

0.1

0.09

0.2

0.1

0.08

0.02

0.02
200
0.2
16
0.06
21
0.06
0.4
0.4
1.9
0.2
0.05
0.2
0.3
0.07
0.6
0.05

 Dominguez Elementary School - Room 11 (DZ-11) VOC data
VOC concentration (ppbv)
SPECIATED ORGANIC COMPOUNDS

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

Propylene
Freon 12 (Dichlorodifluoromethane)
Freon 114(1,2-Dichlorotetrafluoroethan)
Chloromethane
Vinyl chloride
Bromomethane
Ethanol
Freon 11(Trichlorofluoromethane)
Isopropyl alcohol(2-Propanol)
Freon 113(1,1,2-Trichlorotrifluoroethan)
Acetone
Carbon disulfide
Methylene chloride
n-Hexane
2-Butanone(MEK)
Ethyl acetate
Chloroform
Tetrahydrofuran
Cyclohexane
Carbon tetrachloride
n-Heptane
Benzene
Trichloroethene
Bromodichloromethane
4-Methyl-2-pentanone(MIBK)
cis-1,3-Dichloropropene
Toluene
trans-1,3-Dichloropropene
1,1,2-Trichloroethane
2-Hexanone(MBK)
Tetrachloroethene
Chlorobenzene
Ethylbenzene
Xylene (para & meta)
Xylene (Ortho)
Styrene
Bromoform
1,1,2,2-Tetrachloroethane
4-Ethyltoluene
1,3,5-Trimethylbenzene
1,2,4-Trimethylbenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
1,2-Dichlorobenzene
1,2,4-Trichlorobenzene
Hexachloro-1,3-butadiene

1.0
0.5
0.5
0.5
0.5
0.5
1.5
0.5
1.5
0.5
3.0
1.0
1.5
0.5
1.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.5
0.5
0.5
0.5
1.0
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.0
0.5

0.04
0.04
0.03
0.08
0.04
0.05
0.30
0.04
0.03
0.06
0.08
0.04
0.04
0.03
0.07
0.07
0.03
0.07
0.04
0.04
0.04
0.02
0.04
0.04
0.06
0.04
0.05
0.04
0.06
0.05
0.04
0.04
0.05
0.10
0.05
0.05
0.05
0.08
0.06
0.05
0.08
0.06
0.05
0.10
0.10
0.30

69

11/26/08

12/1/08

12/2/08

12/3/08

12/4/08

12/5/08

1.2
0.5
0.01
0.8

4.4
0.4
0.01
0.6

0.5
0.01
0.6

0.5
0.04
0.6

2.7
0.6
0.06
0.6

260
0.2
160
0.06
26
0.03
0.2
0.2
2.1
0.2
0.03

0.06
100
0.2
52
0.06
28
0.06
0.4
1.5
3.9
0.3
0.06

0.4
0.04
0.9
0.05
0.05
210
0.2
13
0.09
17
0.07
0.3
0.3
2
0.3
0.06

63
0.3
4.4
0.09
13
0.04
0.4
0.3
1.2
0.2

41
0.4
5.4
0.1
22
0.1
0.6
0.6
1.6
0.3
0.09

0.06
1.4
0.2
0.02

0.7
0.07
1.3
1.2
0.03

0.2
0.08

0.2
0.07
0.2
0.4
0.06

0.4
0.07
0.5
0.9
0.05

2

0.4

0.1

0.2

0.2

1

4.6

0.8

1

2.7
0.02

0.2
0.03

0.4
0.08

0.2

0.2
0.06

0.2
0.5
0.3
0.1

0.6
2
0.9
0.8

0.1
0.3
0.2
0.1

0.2
0.05
0.2

0.7
0.2
0.8

0.2
0.04
0.2

0.05

0.1

0.03

310
0.2
32
0.06
14
0.2
0.3
1.4

0.07
0.2

0.4
0.04
0.03
0.2
0.02
0.9
0.02

0.2
0.4
0.2
0.1

0.03
0.1
0.07
0.03
0.2
0.4
0.2
0.1

0.1
0.1
0.04
0.4
1.2
0.5
0.9

0.1
0.06
0.1
0.03
0.04
0.03
0.05
0.04

0.03
0.2
0.06
0.2
0.03
0.04
0.03
0.03
0.03

0.04
0.5
0.2
0.5
0.03
0.06
0.04
0.05
0.04

 Dominguez Elementary School - Room 11 (DZ-11) VOC data
VOC concentration (ppbv)
SPECIATED ORGANIC COMPOUNDS

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

Propylene
Freon 12 (Dichlorodifluoromethane)
Freon 114(1,2-Dichlorotetrafluoroethan)
Chloromethane
Vinyl chloride
Bromomethane
Ethanol
Freon 11(Trichlorofluoromethane)
Isopropyl alcohol(2-Propanol)
Freon 113(1,1,2-Trichlorotrifluoroethan)
Acetone
Carbon disulfide
Methylene chloride
n-Hexane
2-Butanone(MEK)
Ethyl acetate
Chloroform
Tetrahydrofuran
Cyclohexane
Carbon tetrachloride
n-Heptane
Benzene
Trichloroethene
Bromodichloromethane
4-Methyl-2-pentanone(MIBK)
cis-1,3-Dichloropropene
Toluene
trans-1,3-Dichloropropene
1,1,2-Trichloroethane
2-Hexanone(MBK)
Tetrachloroethene
Chlorobenzene
Ethylbenzene
Xylene (para & meta)
Xylene (Ortho)
Styrene
Bromoform
1,1,2,2-Tetrachloroethane
4-Ethyltoluene
1,3,5-Trimethylbenzene
1,2,4-Trimethylbenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
1,2-Dichlorobenzene
1,2,4-Trichlorobenzene
Hexachloro-1,3-butadiene

1.0
0.5
0.5
0.5
0.5
0.5
1.5
0.5
1.5
0.5
3.0
1.0
1.5
0.5
1.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.5
0.5
0.5
0.5
1.0
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.0
0.5

0.04
0.04
0.03
0.08
0.04
0.05
0.30
0.04
0.03
0.06
0.08
0.04
0.04
0.03
0.07
0.07
0.03
0.07
0.04
0.04
0.04
0.02
0.04
0.04
0.06
0.04
0.05
0.04
0.06
0.05
0.04
0.04
0.05
0.10
0.05
0.05
0.05
0.08
0.06
0.05
0.08
0.06
0.05
0.10
0.10
0.30

70

12/8/08

12/9/08

12/10/08

12/11/08

12/12/08

12/15/08

1
0.5
0.03
0.5

0.5
0.02
0.5

0.6

0.6

4.7
0.6

0.7
0.4

0.4

0.6

0.5

0.5

18
0.2
35
0.04
14
0.03
0.2
0.05
0.8

42
0.2
8.4
0.04
15
0.06
0.5
0.1
0.7

6.4
0.2
4.2

60
0.2
7.9

5.9
0.04
0.2
0.07
0.3

19
0.02
0.5
0.2
1.4

23
0.4
3.2
0.06
19
0.02
0.8
0.8
1.3
0.2

99
0.2
13
0.03
15

0.04
0.03

0.08
0.03

0.2

0.07

0.2
0.02

0.5
0.06
0.6
1.1
0.06

0.04

0.09

0.1

0.4

0.5

0.5

3.8

0.1
0.03

0.02

0.2
0.02

0.1

0.07
0.2
0.1
0.06

0.07
0.2
0.1
0.2

0.08
0.2
0.1
0.06

0.6
1.7
0.6
0.7

0.03
0.08
0.03
0.02

0.1
0.05
0.2

0.08
0.03
0.08

0.5
0.1
0.5

0.03
0.01
0.04

0.01

0.01

0.04

0.01

0.02

0.02

0.01
0.01
0.03
0.08
0.04
0.02

0.04
0.02
0.04
0.01
0.01
0.02
0.01

0.03
0.07
0.03
0.08
0.01
0.02
0.02

0.2
0.1
0.2

0.2
0.1

0.3
0.1

0.06

2.9
2.9

0.02

 Dominguez Elementary School - Room 11 (DZ-11) VOC data
VOC concentration (ppbv)
SPECIATED ORGANIC COMPOUNDS

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

Propylene
Freon 12 (Dichlorodifluoromethane)
Freon 114(1,2-Dichlorotetrafluoroethan)
Chloromethane
Vinyl chloride
Bromomethane
Ethanol
Freon 11(Trichlorofluoromethane)
Isopropyl alcohol(2-Propanol)
Freon 113(1,1,2-Trichlorotrifluoroethan)
Acetone
Carbon disulfide
Methylene chloride
n-Hexane
2-Butanone(MEK)
Ethyl acetate
Chloroform
Tetrahydrofuran
Cyclohexane
Carbon tetrachloride
n-Heptane
Benzene
Trichloroethene
Bromodichloromethane
4-Methyl-2-pentanone(MIBK)
cis-1,3-Dichloropropene
Toluene
trans-1,3-Dichloropropene
1,1,2-Trichloroethane
2-Hexanone(MBK)
Tetrachloroethene
Chlorobenzene
Ethylbenzene
Xylene (para & meta)
Xylene (Ortho)
Styrene
Bromoform
1,1,2,2-Tetrachloroethane
4-Ethyltoluene
1,3,5-Trimethylbenzene
1,2,4-Trimethylbenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
1,2-Dichlorobenzene
1,2,4-Trichlorobenzene
Hexachloro-1,3-butadiene

1.0
0.5
0.5
0.5
0.5
0.5
1.5
0.5
1.5
0.5
3.0
1.0
1.5
0.5
1.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.5
0.5
0.5
0.5
1.0
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1.0
0.5

0.04
0.04
0.03
0.08
0.04
0.05
0.30
0.04
0.03
0.06
0.08
0.04
0.04
0.03
0.07
0.07
0.03
0.07
0.04
0.04
0.04
0.02
0.04
0.04
0.06
0.04
0.05
0.04
0.06
0.05
0.04
0.04
0.05
0.10
0.05
0.05
0.05
0.08
0.06
0.05
0.08
0.06
0.05
0.10
0.10
0.30

71

12/16/08

12/17/08

12/18/08

12/19/08

0.4
0.02
0.5

0.4

1.1
0.4

1.8
0.4

0.6

0.5

0.5

110
0.2
18

150
0.2
20

32
0.1
5.4

14
0.04
0.4
0.1
0.3

17
0.01
0.2

58
0.2
10
0.02
19
0.03
0.2

0.1
0.03

0.6
0.2

15
0.3
0.05

1

0.02

0.05
0.02

0.2
0.02

0.03

0.05

0.09

6.6

3.5

0.2

0.8

0.6

0.07

0.3

0.2

0.08

0.2

0.1
0.4
0.2
0.06

0.02
0.05

0.03
0.07
0.04

0.05
0.2
0.06
0.05

0.2

0.02

0.2
0.01
0.03
0.01
0.05

0.02

0.03
0.01
0.03

0.05
0.02
0.05

0.03

 Dominguez Elementary School - Room 11 (DZ-11) VOC data
VOC concentration (ppbv)
TENTATIVELY IDENTIFIED COMPOUNDS
1,1-Difluoroethane
1-Butanol
1-Dodecene
2,2,3,3-Tetramethyl butane
2,2,4,6,6-Pentamethyl heptane
2,2,4-Trimethyl pentane
2,2-Dimethyl hexane
2,3-Dimethyl pentane
2-Methyl butane
2-Methyl hexane
2-Methyl pentane
2-Methyl-1,3-butadiene
3-Methyl butanal
3-Methyl butane
3-Methyl hexane
3-Methyl pentane
3-Methyl-1,2-butadiene
Acetaldehyde
Benzaldehyde
Butanal
Butane
Butyl ester acetic acid
Difluorochloromethane
D-Limonene
Heptanal
Hexamethyl cyclotrisiloxane
Hexanal
Isobutane
Methyl cyclohexane
Methyl cyclopentane
Naphthalene
Nonanal
Ocatanal
Octamethyl cyclotrisiloxane
Pentanal
Pentane

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

1.8

1.3

1.3

N/A

N/A

9.2

7.7

8.2

11

N/A

N/A

1.5

1.6

1.4

N/A

N/A

4.1

3.2

3.6

N/A

N/A

2.6

1.8

1.3

N/A

N/A

N/A

N/A

N/A

N/A

1.9

N/A

N/A

2.1

1.8

N/A

N/A

N/A

N/A

1.3

1.7

1.5

1.9

2.1

N/A

N/A

1.4

1

1.5

1.8

1.6

N/A

N/A

N/A

N/A

6.4

6.4

7.5

7.9

3.9

3.1

N/A

N/A

8.8

N/A

N/A

12

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

1.1

1.3

N/A

N/A

5.7

5.3

N/A

N/A

N/A

N/A

72

11/18/08

11/19/08

11/20/08

11/21/08

11/24/08

11/25/08
1.7

2.1
1.2
2.8
2.1

3
1.8
4.7

3.8

4.6

2

1.4

1.7

1.4

1.1

1.7

1.8

1.1

2.2

2.5

1.1

1.4
3.5
4.6

4.9

4.5

4.7

2.9

2.3

1.2
1.8

1.4

2.3

2
1.4

4.1

3.7

4.9

2.5

 Dominguez Elementary School - Room 11 (DZ-11) VOC data
VOC concentration (ppbv)
TENTATIVELY IDENTIFIED COMPOUNDS
1,1-Difluoroethane
1-Butanol
1-Dodecene
2,2,3,3-Tetramethyl butane
2,2,4,6,6-Pentamethyl heptane
2,2,4-Trimethyl pentane
2,2-Dimethyl hexane
2,3-Dimethyl pentane
2-Methyl butane
2-Methyl hexane
2-Methyl pentane
2-Methyl-1,3-butadiene
3-Methyl butanal
3-Methyl butane
3-Methyl hexane
3-Methyl pentane
3-Methyl-1,2-butadiene
Acetaldehyde
Benzaldehyde
Butanal
Butane
Butyl ester acetic acid
Difluorochloromethane
D-Limonene
Heptanal
Hexamethyl cyclotrisiloxane
Hexanal
Isobutane
Methyl cyclohexane
Methyl cyclopentane
Naphthalene
Nonanal
Ocatanal
Octamethyl cyclotrisiloxane
Pentanal
Pentane

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

2.8

2.7

N/A

N/A

1.8

1.6

N/A

N/A

N/A

N/A

2

8.5

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

1.7

1.7

N/A

N/A

1.6

1.8

N/A

N/A

N/A

N/A

N/A

N/A

73

11/26/08

12/1/08

12/2/08

12/3/08

12/4/08

12/5/08

1
1.6
1.3

2.1

8.7

2.2

2.1

2

3.3

3.9
2

1.2
1.1
1
2.1
1.2
2.1

2.7

1.6

1.1

2.6

2.5

1.8

2.9

2.5

8

1.3

2.6

2.4
3.3

1.2
1.8
5.6

2.3

2.1

6.9
1.5

1.8

 Dominguez Elementary School - Room 11 (DZ-11) VOC data
VOC concentration (ppbv)
TENTATIVELY IDENTIFIED COMPOUNDS
1,1-Difluoroethane
1-Butanol
1-Dodecene
2,2,3,3-Tetramethyl butane
2,2,4,6,6-Pentamethyl heptane
2,2,4-Trimethyl pentane
2,2-Dimethyl hexane
2,3-Dimethyl pentane
2-Methyl butane
2-Methyl hexane
2-Methyl pentane
2-Methyl-1,3-butadiene
3-Methyl butanal
3-Methyl butane
3-Methyl hexane
3-Methyl pentane
3-Methyl-1,2-butadiene
Acetaldehyde
Benzaldehyde
Butanal
Butane
Butyl ester acetic acid
Difluorochloromethane
D-Limonene
Heptanal
Hexamethyl cyclotrisiloxane
Hexanal
Isobutane
Methyl cyclohexane
Methyl cyclopentane
Naphthalene
Nonanal
Ocatanal
Octamethyl cyclotrisiloxane
Pentanal
Pentane

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

1.3

N/A

N/A

1.7

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

74

12/8/08

12/9/08

12/10/08

12/11/08

12/12/08

12/15/08

2.6

1

1.8

2.7

4.4
1.1

1.7

1.3

3.2

2.1

3.4

2.3

1.3

2.4

1.2

1.7
1.4

1.1

 Dominguez Elementary School - Room 11 (DZ-11) VOC data
VOC concentration (ppbv)
TENTATIVELY IDENTIFIED COMPOUNDS
1,1-Difluoroethane
1-Butanol
1-Dodecene
2,2,3,3-Tetramethyl butane
2,2,4,6,6-Pentamethyl heptane
2,2,4-Trimethyl pentane
2,2-Dimethyl hexane
2,3-Dimethyl pentane
2-Methyl butane
2-Methyl hexane
2-Methyl pentane
2-Methyl-1,3-butadiene
3-Methyl butanal
3-Methyl butane
3-Methyl hexane
3-Methyl pentane
3-Methyl-1,2-butadiene
Acetaldehyde
Benzaldehyde
Butanal
Butane
Butyl ester acetic acid
Difluorochloromethane
D-Limonene
Heptanal
Hexamethyl cyclotrisiloxane
Hexanal
Isobutane
Methyl cyclohexane
Methyl cyclopentane
Naphthalene
Nonanal
Ocatanal
Octamethyl cyclotrisiloxane
Pentanal
Pentane

Reporting Limit
(ppbv)

Method Detection
limit (ppbv)

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

1.1

N/A

N/A

1.6

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

75

12/16/08

1.1

1.4

1.2

12/17/08

12/18/08

12/19/08