Federal contaminated sites cost / : Coût des sites contaminés fédéraux

The federal government is responsible for: In many cases, the federal government becomes • contaminated sites in the Federal responsible for a contaminated site because Contaminated Sites Inventory; government actors caused the contamination or the • Shared-Responsibility Contaminated Sites,42 government owned the contaminating substance. [...] Priority List (NPL), which is the U. S. inventory of The detailed tracking of the U. S. NPL inventory and contaminated sites eligible for remedial action.78 NPL the fact that it included fewer sites allowed sites are selected from the Comprehensive Resources For the Future (RFF) to take a much more Environmental Response, Compensation, and detailed approach to estimating costs than the PBO. [...] Each record 2. liabilities (closing and opening); contains the following fields: 3. the amount the closing liabilities were • the class of the site (if it has one); adjusted in the year; • its classification score (from which the class of 4. the amount spent on the site (separate the site is derived);. [...] The reason is • Problem: in some cases, the estimated cost of that for a site to advance to HSC 4 or higher, the remediation increases and this is reflected by custodian must specify the type of contaminants and the outstanding liability being reduced by less than the amount of remediation dollars the medium (i.e. [...] Given that the class of sites forms an ordered list The horizontal axis is the dollar amount spent on from 1 through N and many of the sites in the assessment and the vertical axis is the probability it unclassified pool have assessment costs, it is possible will be a class 1, 2, 3, or 4. to use ordered logistic regression (also known as a proportional odds model) to estimate the number of If a ve