I recently had my tank emptied because I had backage come up in the tub. No issues outside. After they pumped my tank I had. Puddle of water where they dug or at the tank. I dug it up noticed it was coming from around the lid. It's a concrete tank with concrete lids. I noticed there is a gab between the lid and the tank about inch so its not really air tight could that be a issue or my field lines or any other feedback to check would be great. Thank you brandon