Suppose you arrive at the site, open the septic tank and find that the outlet baffle in the concrete tank is severely eroded and crumbling with exposed rebar?A septic tank is meant to vent back through the house sewer vent, so the gases produced inside from anaerobic digestion can dissipate to the atmosphere. One of the gases formed during the digestion process is hydrogen sulfide. Because hydrogen sulfide is heavier than air, it has a tendency to settle to the lowest part in the tank over the top of the effluent. Here it combines with water vapor to form sulfuric
