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AEG NOA Technical Working Group Meeting
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 Export to Your Calendar 8/8/2017
When: August 8, 2017
6:00 PM
Where: Pietro's No. 2
679 Merchant St
Vacaville, California 
United States
Contact: AEG's Naturally Occurring Asbestos Technical Working Group

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Association of Environmental & Engineering Geologists
Naturally Occurring Asbestos Technical Working Group

ANNOUNCING OUR AUGUST 2017 MEETING
HOSTED BY AEG’s NATURALLY OCCURRING ASBESTOS TECHNICAL WORKING GROUP


IMPLEMENTATION GUIDANCE DOCUMENT FOR ARB TEST METHOD 435, DETERMINATION OF ASBESTOS CONTENT OF SERPENTINE AGGREGATE, ON FIELD SAMPLING AND LABORATORY PRACTICES
BY: REBECCA DOMINGO-NEUMANN, PHD, PG AND PATRICK RAINEY, CALIFORNIA AIR RESOURCES BOARD

MEETING DETAILS
Location: Pietro’s No. , 679 Merchant Street, Vacaville, CA

Date and Time: Tuesday, August 8, 2017, 6:00 pm—Social Hour and Sign-in, 7:00 pm—Dinner, 7:45 pm—Presentation / Discussion

Cost: $40 AEG Members & Member’s Family, $45 Non-Members, $15 Students

Menu: Buffet of pizza, pasta, salad, iced tea will be served.

Reservations: To RSVP, please fill out the online form (http://aegsf.org/?p=2066) on our website aegsf.org by 12 PM, Friday, August 4th

Driving Directions: Located minutes off I-80 Freeway in downtown Vacaville. For a map and restaurant information: http://www.pietros2.com/contacts.html

Abstract:  Air Resources Board Test Method 435 (M435) has been used since 1990 to measure the asbestos content of surfacing aggregate materials, as required by the Asbestos Airborne Toxic Control Measure (ATCM) for Surfacing Applications, and also for testing rocks and soils regulated under the 2001 Asbestos ATCM for Construction, Grading, Quarrying, and Surface Mining Operations. In 2005, ARB was informed by stakeholders of variable M435 asbestos test results reported by different laboratories that analyzed the same field samples. In response, ARB staff conducted an interlaboratory study in 2006-2007 to determine if variable M435 laboratory practices can affect the reported asbestos content. From 2008-2016, all aspects of M435, including field sampling practices, were evaluated and discussed with experts and asbestos stakeholders.

As a result of these activities, the Implementation Guidance Document for M435 on Sampling and Laboratory Practices, was released on April 28, 2017. Its purpose is to assist M435 users to obtain accurate, repeatable, asbestos content measurements. Its recommendations are to be used in conjunction with M435, which has not been revised. The guidance document explains existing procedures in the test method, and recommends sampling and laboratory practices.

This non-regulatory guidance document clarifies the applicability of M435 to the asbestos ATCMs. M435 is the required test method for the asbestos Surfacing ATCM, while it is an approved bulk analysis test, one among several, for the Construction ATCM. M435 cannot be used in lieu of a geological evaluation that is required under both ATCMs when seeking
exemption from asbestos ATCM requirements.

Recommendations are given on how to obtain representative aggregate field samples, laboratory sample preparation following M435 specific standard operating procedures, consistent use of quality control measures, and ensuring the sample analyzed is representative of the field sample submitted to the laboratory. It also discusses the standardized use of polarized light microscopy for the optical characterization and quantification of asbestos. The M435 guidance document can be downloaded at: https://www.arb.ca.gov/toxics/asbestos/tm435/tm435.htm

Speaker Bios:
Rebecca Domingo-Neumann has been an Air Pollution Specialist at the Air Resources Board’s Monitoring and Laboratory Division since 2005. She is a licensed Professional Geologist in California and the Philippines. She completed her bachelor of science in geology at the University of the Philippines, and post-graduate training on sedimentology at Phillips University,
Germany. She was a petrographer and petroleum geologist in the Philippines for 12 years. She earned her doctorate in soils and biogeochemistry from the University of California, Davis. Her dissertation was entitled: “Dust Generation from Soils and Characterization of Mineral Dust from the Central Valley of California.”

Patrick Rainey is a supervisor at the Air Resources Board’s Monitoring and Laboratory Division. He joined ARB in 2009 and has been lead for several programs, including laboratory and special purpose audits, and technical system audits. He has more than 25 years’ experience in the environmental testing and monitoring industry, with a proven track record in quality assurance, laboratory operations, and staff management. He earned a bachelor of science degree in environmental toxicology from the University of California, Davis.

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