This man visited the campground for the first time and was consequently a little confused about the operations. As he took the cap off the black tank of his trailer in order to connect a hose to drain the dump tank, the sewage started overflowing. This happened because he had forgotten to close the valve from a previous dump. At the moment, he did panic initially but soon got the situation under control, reconnected the hose, and cleaned the waste using the available water there.