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to ta tio perhaps no more than 400 manufactured gas plants existed in be adaptable to any location, given the economics of making132 / PRACTICE PERIODICAL OF HAZARDOUS, TOXIC, AND RADIOACTIVE WASTE MANAGEMENT / JULY 1999 the entire young nation. Portland would follow as the second-State entry for manufactured gas in 1859 (Murray 1863). This paper has been written to present a basis for construc-tive discussions, planning, and conduct of remedial action at former manufactured gas plant (FMGP) and related sites, where such efforts are indicated in review of the facts. With this paper, the writer does not adopt or present any form of advocacy of particular types, breadth, or depth of environ