Joel Hoffman, your summarizing post dated Thursday 7:09pm is extremely interesting to me, and very clear to understand. I see logical merit to this way of considering the situation; thank you! If anyone is able to point me to any cases that discuss this concept further (how XY should be considered a separate unit from Z, not a unitary XYZ), please post them; I would like to read more on this topic.
No Joel, I don’t have access to a recent edition of Nash and Cibinic’s Administration of Government Contracts. I will seek it out.
To address another commenter’s question about why I’m being so vague with the facts . . . I’m tasked with reviewing many modifications each year, including commercial and noncommercial, including some where prior modifications were supported by JOFOCs but now they are looking to add more work that the CO claims is within scope. I’m just trying to apply the right framework to my analysis, and I very much appreciate all the time that posters have given to this topic. My decision to include few facts in my original question is based on my need to find the right framework for reviewing many modifications with many different fact patterns.
One post a while back asked me, if I’m not using the Changes clause as the basis of authority, what am I using? While many/most of the modifications that I’m reviewing do involve changes that fall within the list of enumerated permissible change types in the Changes clause, it’s my understanding (supported by Vern Edwards’ comment dated June 22, 2011 here) that in-scope changes are NOT LIMITED TO only those enumerated change types in the Changes clause. The Changes clause provides certain UNILATERAL rights to the Government. It’s my understanding that, for a bilateral modification to a contract that had not previously been modified with a JOFOC, my scope analysis is based on a totality of the circumstances, considering whether the changes were (or should have been) fairly and reasonably contemplated by potential offerors at the time that the contract was solicited and awarded, whether it is likely that the field of competition (i.e., the number and identities of offerors) would have changed if the changes had been included in the original solicitation, and whether it is likely that the contract would have been awarded to a different awardee if the changes had been included in the original solicitation. Therefore, there may be instances where a change may be considered in-scope even if it falls outside of the enumerated list of permissible changes in a Changes clause included in the contract, so long as it meets the totality of the circumstances test identified in the previous sentence.
For what it’s worth, if no one has anything else to add, I feel as if my question was asked and answered. Thank you all!