This manual is the product of several contributors from SWANA’s Landfill Gas & Biogas (LFG) Technical Division’s Generation and Modeling Committee. Jeffrey Pierce, Vice President at SCS Engineers and committee chair from 2000–2003, was responsible for preparing the final version of the manual. Lester LaFountain, President of New Cure, Inc., and committee vice chair from 2000–present, extensively edited the manual. Alex Stege, Senior Project Scientist with SCS Engineers and Committee Chair since 2003, completed the final review and editing. Also, many thanks go to Dick Prosser, President of GC Environmental Inc., for his substantial review and comment of the manual. Kent Drinker, Senior Manager with SWANA, oversaw publication of the manual and overall management of SWANA LFG Division committee activities. Rupam Soni, a Project Engineer with the Los Angeles County Sanitation Districts developed the initial drafts of the manual. We sincerely hope you find this manual to be useful and informative.