Idaho National Laboratory Cultural Resource Management Plan

Council consultation, additional time will be required to draft a formal letter of consultation and to gather
documentation that will aid in the consultation review process. After consulting parties have received
sufficient information, they will have 30 days to review the project. On rare occasions, additional 30-day
review periods may be requested by the consulting parties depending on timing and the complexity of the
project.
Effect Determinations
Briefly, after compiling and reviewing appropriate documentation as previously discussed, the INL
CRM Office will determine if the proposed project will impact historic architectural properties. Three
possible effect determinations exist:
1. No historic architectural properties affected. No historic architectural properties exist within the
area of potential effect or the historic architectural properties present will not be affected by the
proposed undertaking. In this case, the project may proceed as planned.
2. No adverse effect. Potentially eligible architectural properties are present in the area of potential
effect, the undertaking is not exempt and will affect the historic properties, but the effect is or can be
rendered not adverse. The INL CRM Office will work with project managers or their designees to
ensure, or to develop strategies to ensure, that project activities will not be harmful to the historic
property. When appropriate and if possible, project work plans will be written or adjusted to
incorporate applicable avoidance and protective measures that render a potentially adverse effect
harmless. Discussion regarding methods used to redesign projects or to turn anticipated adverse
effects into no adverse effects will be documented, retained in the INL CRM Office, and summarized
in annual reports.
3. Adverse Effect. The project activities are not exempt and will result in damage to one or more
historic architectural property. According to 36 CFR 800, “Protection of Historic Properties,” an
undertaking has an effect on a historic property when the undertaking may alter the characteristics of
the property that may qualify the property for listing on the National Register. The effect is
considered to be adverse if it may diminish the integrity of the property's location, design, setting,
materials, workmanship, feeling, or association in any of the following ways:
Destruction, damage, or alteration of all or part of the property
Isolation of the property from or alteration of the character of the property's setting when that
characteristic contributes to the property's eligibility
Introduction of visual, audible, or atmospheric elements out of character with the property or the
setting
Neglect of a property resulting in deterioration or destruction
Transfer, sale, or lease of the property without protective covenants.
In the event that adverse impacts cannot be avoided, INL CRM Office staff will follow the mitigation
strategies outlined below or, in the event strategies have not been developed for certain property
types, DOE-ID will consult with the Idaho SHPO and interested parties to develop measures to
minimize or mitigate the impact.
Mitigation
When an effect on a historic architectural property will be adverse and avoidance or reuse is
infeasible, mitigation to minimize the adverse effect will be necessary. Based on the relative importance
of the affected property, as defined by the property category, mitigation includes varying types of
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