Selected studies, articles and presentations by our firm's senior staff are listed below. Click on those highlighted to download.

LA River Trash Cleanups: Evaluating Changes over Time, 2020
Los Angeles Area Litter Survey, 2020
New Jersey Statewide Waterways Litter Survey, 2019 
Stump Sound, NC Litter Survey, 2019  
Little Hunting Creek Watershed Litter Sources Study, 2019
Texas Statewide Litter Survey, 2019
White Paper: Litter Prevention Strategies, 2019
Los Angeles Area Litter Survey, 2019
Oahu Litter Index Survey, 2019
Ohio Statewide Litter Survey and Litter Cost Study, 2019
New Jersey Litter Abatement Training Course with NJ Clean Communities and Rutgers University, 2018
Oahu Litter Index Survey, 2018
New Jersey Coordinators' Litter Surveys, 2018
Los Angeles Area Litter Survey, 2018
New Jersey Litter Survey, 2018
Ocean Conservancy ICC Data - Plastic Grocery Bags in Beach Litter, 2017
LA Times Op-Ed on Litter, June 2017
Los Angeles Area Litter Survey, July 2017
White Paper - Analyzing the Impacts of PR Bag Bans and Taxes, May 2017 
Oahu Litter Index Survey, March 2017
Honolulu Litter, Solid Waste and Storm Water Management Systems - Technical Assessment Report, December 2016
A Fresh Approach to Characterizing and Understanding Watershed Litter More Clearly, August 2015 
Alameda Countywide Storm Drain Trash Monitoring and Characterization Project - Technical Assessment Report, March 2015 
Anacostia Watershed Litter Survey, January 2015
Plastic Retail Bags Report Brief - 2015 Litter Survey Rankings, January 2015
Rhode Island Litter Survey,  June 2014 
Paper, Plastic or Neither, Time Magazine, January 24, 2014
Paper and Plastic Bag Litter Study, October 2013
Texas Litter Survey - Final Report, 2013 
Facts about Plastic Retail Bags in Litter, January 2013
Toronto Streets Litter Audit, November 2012
Contribution of Polystyrene Foam Food Service Products to Litter, May 2012 
Northeast Litter Survey - Final Report, July 2011 
Northeast Litter Survey PowerPoint, May 2011
Litter in America - ERP/Action Research Webinar, April 2010
KAB National Litter Study - Final Report, December 2009
KAB National Litter Study - ERP Executive Summary, December 2009
KAB National Litter Study Results (ERP PowerPoint), December 2009
Trash Register, National Geographic Magazine, December 2008
The Impacts of Litter on Greenhouse Gas Emissions, WASTECON 2008
Addressing Litter Issues in a Changing World, International Adopt-a-Highway 2008
Litter and Its Implications for Solid Waste Managers, WASTECON 2007
Roadside Litter: Hazards on the Road, MSW Management Magazine, 2007
Garbage, Litter & Trash, Kojo Nnamdi Show, WAMU (NPR), 2007
Debris Wreaks Havoc on the Road, Good Morning America (ABC News), 2007
Worsening U.S. Road Litter Threatens Lives, Voice of America Interview, 2007
Road Debris Causes 25,000 Accidents Annually, Urban Transportation Monitor Interview, 2007
Wake Up, Potomac Watershed Trash Summit Roundtable, 2007
Highway Debris, Long an Eyesore, Grows as Hazard, New York Times Interview, 2007
Litter: Literature Review, 2007
2006 Georgia Statewide Litter Survey - Final Report, 2007
2006 Tennessee Statewide Litter Survey - Final Report, 2007
Results from Recent Litter Surveys, Keep America Beautiful Conference, 2005
Sweating the Litter Things, Resource Recycling Article, 2005