N.M. Code R. § 4.10.12.12
A. This section applies either when no prudent or feasible alternative is found which will avoid use of a significant prehistoric or historic site or sites, or when more than one alternative which will affect a significant prehistoric or historic site or sites is found. In either case, a plan to minimize harm to the affected significant prehistoric or historic site or sites shall be incorporated as a separate section of the record of decision described in 4.10.12.11 NMAC above. The plan must contain the following:
(1) a map of the area of impact, including the significant historic or prehistoric sites to be used;
(2) documentation of ownership of the area of impact;
(3) a description of the significant historic or prehistoric site or sites to be used and a statement of the historic, architectural or archaeological significance of the site or sites. The state or national register nomination form may be the source of this statement;
(4) documentation of alternatives, if more than one alternative has been found, totaling the harm caused by each alternative, and making a conclusion, based on comparisons stated in appropriately substantial detail, that given alternative in association with any specific measures for stabilization, restoration, protection or data recovery causes the least harm to a significant historic or prehistoric site or sites;
(5) estimated costs relating to (4) above;
(6) any contract, agreement or proposed agreement relating to the disposition or maintenance of the significant prehistoric or historic site or sites;
(7) any schedule of maintenance of the significant prehistoric or historic site or sites, including approximate costs.
C. The only relevant factor in making a determination as to whether an alternative minimizes harm to a significant prehistoric or historic site is a quantum of harm to the site caused by that alternative.
[9/15/89; 4.10.12.12 NMAC - Rn, 4 NMAC 10.12.12, 1/1/08]