Grimes Canyon
Mining Projects
Environmental Impact Report
– Ventura County
Envicom Corporation prepared the EIRs for three mining projects in Ventura County, proposed by Grimes Rock, Inc., Wayne J Sand & Gravel, and Best Rock Products Corporation. Each of these mining operations is requesting a permit modification to allow for expansion of permit boundaries, increased aggregate (construction grade sand and gravel) production levels, increased daily trucking limits, changes to days and hours of operation, and changes to restrictions in truck routes. These permit modifications collectively constitute the proposed projects assessed in each EIR. The EIRs identify the impacts associated with each of the mining projects, the combined effects of all three mining projects, and cumulative impact of these mining projects in combination with other growth in the area. The mines are located along State Route (SR)-23. Trucks traveling to and from these mines along SR-23 pass through the Cities of Moorpark and Fillmore, which are experiencing residential growth. Key issues raised by the proposed projects are the compatibility of expanded mining operations with land uses along SR-23, traffic congestion, and effects on biological resources, water quality, and scenic views.