Mammoth Lakes 395 Wildlife Crossing (Potholing Operations)

The California Department of Transportation, District 9 – Bishop, is undertaking geotechnical investigations for the Mammoth Lakes 395 Wildlife Crossing project along southbound U.S. Route 395 in Mono County, California, focusing on five mud-rotary borings to collect soil data for foundation design. Two borings are planned at post mile R19.79 and three at post mile 20.23, each extending up to 70 feet deep within a 30 feet by 30 feet area entirely contained within Caltrans right-of-way, with no anticipated impact to vegetation or environmental resources. Soil cuttings from the borings will be collected in 55-gallon drums for offsite disposal, and each 4-inch diameter borehole will be backfilled to ground surface with cement grout. The work is categorized under CEQA Categorical Exemption Class 6 (Section 15306) and a Ministerial Exemption, confirming minimal environmental impact and compliance with applicable California Public Resources Code sections. The project is identified under solicitation number 09-38160 with a NAICS code of 541380 for engineering services, and all activities are governed by Caltrans procedures without federal FAR clauses, special contract requirements, or pricing details provided. The primary point of contact is Ryan Spaulding, Senior Environmental Scientist, while Dennee Alcala, Supervising Environmental Coordinator, serves as the environmental compliance signatory. There are no specified period of performance dates, delivery terms, payment details, evaluation factors, or contractor representations in the documentation, reflecting a streamlined, low-complexity procurement under state environmental exemptions with no formal contract type or cost data disclosed.