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Cost and Distribution of Bids for Asbestos Abatement Projects in the Public Sector

Envirosafe Training and Consultants, Pittsburgh, Pa., USA

This study evaluated costs from 15 different public as bestos abatement projects. Data suggest that costs among (within) project bids are distributed normally, but between bids are nonnormal. Many bids in this study have an outlier and most commonly these represent the highest proposed cost. Outliers had a strong influence on summary data. Cost data, in its summary form, should be provided with and without outliers. Other fac tors beside bid cost are important when selecting the lowest responsible bidder. The information presented here will assist those in environmental management during the process of selecting a contractor.

Key Words: Distribution • Environmental cost • Environmental management

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