Specifications include, but are not limited to: Performing an audit of all assessed oil and gas equipment in Rio Arriba County, New Mexico with reference to their identification, location, mapping and valuation. The primary objective of this work is to ascertain that the oil and gas companies operating in Rio Arriba County have provided the Assessor’s Office with all required documentation to accurately assess the property for ad-valorem purposes. Completion of this audit will confirm that all oil and gas personal property including compressor stations, meters, gathering lines, gas plants or any other personal property not associated with production taxes have been valued according to state statute and procedures developed by the State of New Mexico Division of Property Taxation.