California Ambient Dioxin Air Monitoring Program (CADAMP)

This page last reviewed January 17, 2012

The Monitoring and Laboratory Division of the Air Resources Board (ARB) established a comprehensive ambient air quality monitoring program to collect data for polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), polychlorinated biphenyls (PCBs), and polybrominated diphenylethers (PBDEs).  Because very little dioxin data were available for California urban areas, the California Ambient Dioxin Air Monitoring Program (CADAMP) was conducted primarily in urban regions from 2002 through the middle of 2006.

CADAMP was modeled after the U.S. Environmental Protection Agency's National Dioxin Air Monitoring Network (NDAMN) and used similar sampling and analytical protocols.  However, NDAMN focused in rural areas to study pathways by which dioxins enter the food chain and did not include the monitoring of PBDEs.

Information about CADAMP can be found below.  Results are available on the CADAMP Monitoring Results webpage.

Program Overview

Background information about ARB's urban dioxin study and the EPA's national rural dioxin study. You may also access our presentation of this summary in Powerpoint or PDF.

Data Analyses On November 3, 2010, a data analysis summary for the entire program, 2002 through 2006, was presented at the Air and Waste Management Association (AWMA) conference held in Los Angeles. The published article and presentation slides are available to view.  

In March 2010, an extensive analysis of CADAMP data was completed by Sonoma Technology, Inc. (STI) in fufillment of a contract with the Air Resources Board.  The report focused on spatial and temporal relationships, meteorological effects, and possible source contributions.  The final report is available to view.  

In 2005, data for 2002-2004 was presented at the Air and Waste Management Association (AWMA) conference held in San Francisco. You may view the presentation slides in Powerpoint and the published article in PDF.

CADAMP Quality
Assurance Project Plan

2005 Monitoring Protocol

Detailed programmatic information regarding the program management, sampling protocol, analytical methods, and quality control procedures are contained in these documents.

Sampler Standard
Operating Procedures

Field Operations

Flow Audit Procedure

Sampler operation, CADAMP specific field procedures, and the flow audit procedure are linked here.

Monitoring Sites

Locations of the CADAMP sampling sites are shown here with information regarding why these particular sites were chosen.

Samplers, Media and
Analyte List

The sampler used in ARB's air monitoring program collects air on a quartz fiber filter and polyurathane foam. The sample collection device is shown here with the list of target compounds.

Sampling Schedule - 2002

Sampling Schedule - 2003

Sampling Schedule - 2004

Sampling Schedule - 2005

Sampling Schedule - 2006

Comprehensive schedule for sample and field blank collection, filter change, and start of new sampling moments.

Analytical Methods

The methods used for sample analysis for CADAMP are modifications of standard EPA methods 1668A and TO-9A. These reference methods can be found here.

For further information contact:
Jeff Wright, Manager, Operations Planning and Assessment Section
Kathy Gill, Manager, Organic Laboratory Section