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HI all,

When I last had my tank pumped 2 years ago a small hole was
discovered half way up the side. It is\was the size of a roll of
pennies. Having waited two years to get it fixed I finally started
digging out the tank at the approximate location of the hole. I got
down about two feet when my hole started to get waterlogged. I was
able to dig a trench almost the entire side of the tank about 3 feet
down before it got to messy with all the waste water. I still dont
have an exact location of the leak but should not have a hard time
locating it tomorrow. I have a septic company scheduled to empty my
tank tomorrow morning so I will be able to make the repair. Having
talked to a friend who was employed in the septic/excavation field for
many years he advised me to fill the hole with hydraulic cement and
then put an asphalt shingle on both sides with roofing tar or some
other sealant. Does this sound like the proper approach?

That's a fairly common method. But most country folks around here just dig
down to the hole, drive a piece of coroplast or other plastic sheeting down
far enough to hide the hole, backfill it and leave it. It would probably
never cause you an ounce of trouble. If you want to go to the trouble, just
get you some chicken wire, ball some up and cram it in the hold, then cut a
sheet big enough to cover the hole, hold it over the hole and plaster it
with some ready mix concrete. Just make sure the area around the hole is
damp, preferably wet, when you put the concrete on it. Let it sit for a day
and then backfill with dirt and forget about it.