I have been receiving many reports of bees mining in the ground lately. This early in the year, the culprit is usually andrenid bees. Soon it will be colletids or other friendly native bees. Andrenid bees are called mining bees.
Mining bees have one generation of adults per year in the spring.
Each female constructs her own nest without help of other bees. Once this flight of mining bees dies out, there will be no activity in the area until the following spring. It may be possible to step on a mining bee while barefooted and get stung on the foot, but that is about the only hazard from these otherwise beneficial insects. Mining bees are valuable pollinators of spring crops. It is better to coexist with the bees because of their value in the pollination of various crops than try to eradicate them with pesticides.