cells i a c 1 4 of table 3 by further way of example a full transfer and or assumption of liability may take place between thousands of prps and a single service provider in which the service provider obtains insurance to guarantee the cleanup of the site as in state of maine v u s and settling nonfederal defendants and trc no 00 64 b c d me may 30 2000 which is incorporated herein by reference in its entirety an optional variant of this example is for a service provider and client s to agree to share any potential revenues obtained from any one or more of the alternative revenue sources in accordance with this example these revenue sharing options are reflected in any one or more of the cells included under cells i a c 1 4 b e of table 3 it will be known to persons of ordinary skill in the art that various other combinations could be employed provided they come within the scope of the present invention as claimed in the appended claims and their equivalents for example with respect to program ii providing client s with a relatively certain price to clean up a contaminated site which price would reflect funds initially provided by the client the u201c initial funds u201d plus funds from any proceeds from insurance funded by the client s is shown in its various forms by cells ii 2 4 of table 3 however a service provider 39 s contractual obligations and liabilities would be limited by the amount of the initial funds together with any proceeds.