Mariposa Rockslide

The Mariposa Rockslide project, managed by Caltrans District 10 in Stockton, is an emergency forecast initiative under NAICS code 237990. Located at Postmile 44.51 on State Route 140 in Mariposa County, California, the project is designed to prevent the loss or impairment of life, property, and essential public services. The scope of work includes rock scaling, rock blasting, the installation of rock anchors for slope stabilization, and the repair of pavement damage caused by a previous rockslide. The project has been granted a CEQA exemption and a NEPA categorical exclusion, as no significant environmental impacts are anticipated. However, strict protocols are in place regarding the discovery of cultural materials or human remains, requiring an immediate work stoppage within a 60-foot radius and notification of the Engineer and county coroner where applicable. Project management is led by Scott Uch, with Maria Garcia Lopez serving as the primary environmental point of contact. Environmental reevaluation will be required if the project scope changes or if previously unknown sensitive resources are discovered.