This opportunity involves supplying virgin quarried aggregate, including 1.5-inch minus road base gravel and 3/8-inch minus trail gravel with fines, for the Humboldt Bay National Wildlife Refuge in California. Materials must be newly mined from local geological deposits within approximately 100 miles, with recycled or washed river rock not accepted. A copy of the latest gradation analysis and test data meeting the Statement of Work standards must be submitted with pricing. Performance location is the Humboldt Bay NWR in California. No budget amount or submission timeline is specified.

This opportunity involves supplying virgin quarried aggregate, specifically 1.5" minus road base gravel and 3/8" minus trail gravel with fines, for the Humboldt Bay National Wildlife Refuge in California. Materials must be newly mined from local geological deposits within approximately 100 miles, and recycled or washed river rock will not be accepted. Performance of services is at the Humboldt Bay NWR location. A copy of the latest gradation analysis and test data meeting the SOW standards must be submitted with pricing.