Got the trench filled as it started to drizzle.

Only had one minor problem, I seem to have miscalculated the depth needed for the sprinkler heads, so they stick up about 1-2 inches from the dirt. But I think once the grass grows back they won’t be as noticeable. I’ll just have to go around them with the mower. But it’s something I can live with for a $150 DIY project (minus trench rental). :-)

Everything amazingly went according to plan and the sprinklers worked great on their first test. Yay!

All that’s left to do now is bury the pipe and then fill in the trench.