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Environmental Science and Planning


Paleontological Resources Analysis, Monitoring and Recovery


Many local, State, and Federal agencies require the assessment of paleontological resource potential for the purposes of acquiring or complying with permits and/or discretionary approvals for projects involving soil disturbance within possible fossiliferous areas. Rincon’s paleontological team has extensive experience assessing paleontological resource potential and assisting applicants with acquisition of permits, permit compliance, construction monitoring, fossil recovery, and curation.

A Phase I Paleontological Resources Analysis (PRA) consists of the following elements:
  • Map analysis – A review of geological maps identifies formations present within the construction footprint (surficial and below ground) to assess fossil potential.
  • Institutional records search – A review of previously recorded discoveries is conducted with local natural history museums.
  • Peer-reviewed literature review - A search of peer-reviewed literature is completed to identify known paleontological resources within the project site or on-site formations in adjacent areas.
  • Reconnaissance surveys – Surveys are recommended for projects assessed as having unknown or high fossil potential. Surveys generally include ground verification of exposed rock units, hand excavation and mapping of expected sensitive areas.
For a project within an area identified as having high fossil potential, subsequent monitoring and mitigation including fossil recovery may be recommended as a result of a Phase I PRA.

A Monitoring and Mitigation Plan (Phase II PRA) typically identifies the appropriate methodology, parameters, and schedule for monitoring during construction, fossil salvage, preparation, curation, and storage of fossils.

A Phase III PRA involves implementing the Phase II plan, including monitoring during excavation, logging of stratigraphic information, mapping of any fossils discovered, and fossil collection. A monitoring schedule is established prior to construction and mitigation performed if fossils are discovered during construction activities. Typical mitigation includes the collection and preparation of fossils for curation in-house or by an appropriate institution for long-term curation and storage.

Representative Projects