Share:

All American Asphalt - Air Sampling Initiative

Overview

In response to community concerns, South Coast AQMD is conducting a short-term air sampling and analysis initiative near the All American Asphalt facility to determine what emissions if any, are impacting nearby communities.

South Coast AQMD Air Monitoring Initiative

As technical experts committed to protecting public health, South Coast AQMD uses the most appropriate technology, methods and approaches for each air monitoring purpose, which for this case is the evaluation of gaseous air toxics (e.g. benzene, toluene and xylene) in the Irvine community. This follows strict quality control criteria and analysis based upon U.S. EPA guidance methods. These methods ensure that the data is accurate so that we can confidently compare the data with health-based thresholds and other air toxics measurement programs that have been conducted nationwide.  Samples collected are compared against typical background levels for residential or commercial areas, as well as health-based standards established by the California Office of Environmental Health Hazard Assessment (OEHHA). 

MONITORING RESULTS AND HEALTH IMPACTS

Based on the data our scientists have collected and analyzed thus far, we do not have evidence to conclude that there are elevated air toxics levels that would cause a health threat to the residents of the community near the facility. The monitoring data provides information about the overall levels of air pollution in the community. The sampling data that we have thus far have shown relatively typical (“background”) levels of toxic air pollution in the community.

ODORS

The community has been impacted by foul odors from the facility, which have typically been short-term odor events. We continue our efforts to address the odor impacts to the community. Short-term exposure to strong foul odors can cause people to experience health symptoms such as headaches and nausea. Symptoms typically go away soon after the odors are no longer detected.

The presence of foul odors does not necessarily indicate that toxic air pollutants are present at levels that would cause more serious health impacts. 



Monitoring Data

Data from this sampling effort will help guide South Coast AQMD’s next steps. The sampling results will be posted below as they become available.

Please note, many factors can contribute to slightly higher levels of pollutants on any given day such as wind direction or increase of other sources including car or truck traffic, use of paints and cleaning supplies—all of which can emit VOC’s into the atmosphere. 

Results of Air Monitoring in Communities Nearby All American Asphalt

Compounds listed in the graphs represent some of the common air toxics from operations at asphalt facilities. The complete sampling reports can be found in Table 1 below.

 

Table 1: Laboratory Results

Lab ID

Sample Date

Notes

2034324

12/2/2020

Results are within typical background levels and below OEHHA health-based exposure levels. Sample at Northwood High School invalidated. *

 

 12/8/2020

Sampling cancelled due to the nearby Bond wildfire.

2035301

 12/17/2020

Results are within typical background levels and below OEHHA health-based exposure levels.  Sample at Canyon View Elementary invalidated.*

2035901

2035902

 12/23/2020

Results are within typical background levels. The sample at Canyon View Elementary (2035901) showed slightly higher levels of methylene chloride and styrene but are well below OEHHA health-based exposure levels. All other results are also below OEHHA health-based exposure levels.

2036601

 12/29/2020

Results are within typical background levels and below OEHHA health-based exposure levels.  Sample at Canyon View Elementary invalidated.*

 

 1/8/2021

Samples at Canyon View Elementary and Northwood High School invalidated.*

2101506

 1/14/2021

Results are within typical background levels. Sample at Northwood High School invalidated.*

2101922

1/15/2021

Results are within typical background levels.  Sample at Canyon View Elementary School invalidated.* 

 

1/18/2021

Samples at Canyon View Elementary and Northwood High School invalidated.*

 

2102901
2102902
2102903

1/28/2021

Results are within typical background levels.  

2103514
2103515
2103516

2/3/2021

Results are within typical background levels.

2104112
2104113
2104114

2/9/2021

Results are within typical background levels.

 

2104801
2104802
2104803

2/15/2021

Results are within typical background levels.

 

2105401
2105402
2105403

2/21/2021

Results are within typical background levels. 

 

2106103
2106104
2106105

2/27/2021

Results are within typical background levels.

 

2106801
2106802
2106803

3/5/2021

Results are within typical background levels.


2107101
2107102
2107103 

3/11/2021

Results are within typical background levels. 

2107702
2107703
2107704

3/17/2021

Results are within typical background levels.


2108312
2108313

3/23/2021

Results are within typical background levels. Sample at Eastwood Elementary School invalidated.*

2109002
2109003
2109004

3/29/2021

Results are within typical background levels.


2109601
2109602
2109603

4/4/2021

Results are within typical background levels.

2110302
2110303
2110304

4/10/2021

Results are within typical background levels.


2111003
2111004
2111005

4/16/2021

Results are within typical background levels.  Low levels of siloxane were observed at Orchard Hills.

2111314
2111315

4/22/2021

Results are within typical background levels.

2111901
2111902

4/28/2021

Results are within typical background levels.

2112514
2112515

5/4/2021

Results are within typical background levels.

2113101
2113102

5/10/2021

Results are within typical background levels.

2113802

5/16/2021

Results are within typical background levels.  Sample at Eastwood Elementary invalidated.*

2114504
2114505

5/22/2021

Results are within typical background levels.

2115202
2115203

5/28/2021

Results are within typical background levels.

2115501
2115502

6/3/2021

Results are within typical background levels.

* South Coast AQMD follows strict quality control procedures and may invalidate a sample due to a variety of reasons which includes equipment malfunction, loss of power, and operational issues due to the COVID-19 pandemic. South Coast AQMD works to resolve any issues as quickly as possible.

Sampling Locations

South Coast AQMD has two monitoring locations: one at Eastwood Elementary School and the other in the community of Orchard Hills. The Orchard Hills air sampler is located next to a community tVOC monitor used by Dr. Jun Wu and other University of California, Irvine advisors. Having both monitors will help South Coast AQMD identify the specific pollutant detected during any potential short-term incident and provide the additional information to the community. South Coast AQMD’s state of the art laboratory can detect down to parts per billion for many pollutants and can provide specific pollutant detail for short term events, even with a 24-hour average time integrated sample. Our monitoring will be able to show if there were substantial gaseous air toxic levels of air pollution in the community, and the data from the community tVOC sensors may provide details on the timing if short term events occur. Should levels continue to be within background levels, air monitoring efforts will be concluded mid-June.

Previous sampling locations were at Northwood High School and Canyon View Elementary. Many factors contributed to the selection of the sample sites including proximity to the facility, odor complaints and communities impacted.

Figure 1 - South Coast AQMD Past and Current Sampling Sites

Sampling Locations

1 - Northwood High School sampling: December 23, 2020 to April 10, 2021
               2 - Canyon View Elementary School sampling: December 23, 2020 to April 16, 2021


Other Monitoring Efforts In This Community

Blake Lab: Community members are working with advisors at UC Irvine to collect a small number of short-term air samples. These “grab samples” were analyzed in the laboratory for gaseous air toxics, and the effort sought to compare levels in samples collected during odor events to those collected when no odors were present. The data from these sampling efforts are posted here: https://sites.uci.edu/rowlandblakelab/.

City of Irvine: The City of Irvine hired a contractor to collect and analyze some air samples at and near the facility. The data from these sampling efforts are posted here: https://www.cityofirvine.org/community-development/all-american-asphalt-air-sample-summary-details.

Non-Toxics Neighborhood Group Community Monitoring:  The Non-toxics Neighborhood group is working with advisors from the UC Irvine to install air pollution sensors in the community.


More Information:


Newsletter Sign Up
Periodic newsletter updates via Email on a variety of air quality-related topics

South Coast Air Quality Management District

21865 Copley Dr, Diamond Bar, CA 91765

909-396-2000

 

© 2021 South Coast Air Quality Management District