Excavating the middle of the trench

Having finished the trench all the way to the street, we now turn back and look at the next section -- the middle of the trench.

The middle section of the trench has two layers of rock.  Towards the top is a layer of white hard limestone, and under that is a layer of softer reddish marl limestone.

First we remove the lower level of reddish marl limestone.

And then we break up the upper level of hard white limestone.

and we clear it out.  This lets us fill the trench in even further.


We need to wait to fill it all in until after we rebuild the main irrigation water supply line.