always measure from one corner of the house to the clean out hole on the tank, then measure from the other corner of the house to the clean out hole write both numbers down,, even measure from a window or anything that will be there for years, take two string or tapes with the measured numbers on them and when they cross the hole is down under the ground.
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always measure from one corner of the house to the clean out hole on the tank, then measure from the other corner of the house to the clean out hole write both numbers down,, even measure from a window or anything that will be there for years, take two string or tapes with the measured numbers on them and when they cross the hole is down under the ground.