Subsoil Moisture and Frost

I ventured into the field for the first time today to do a septic tank investigation near Brownstown.  I make three soil borings to a depth of 5 feet.  The surface was fairly firm although I did pick up some mud on my boots.  The top five or six inches was thawed.  I then hit 4 to six inches of frozen ground.  I was able to hammer through it fairly easily.  Subsoil in that area was moist, but I did not hit a water table.  Normal spring rains will continue to add moisture.  At least in that area, subsoil moisture should be good going into the growing season.  Keep in mind that this was in an area that had more or less average amounts of rain last summer and fall.  I will be doing more borings later in the week.