Holiday weekend and lots of water in my basement - called Black Diamond who originally said someone would be out between 12pm and 2pm but she quickly called back and said the plumber would be here within the hour. Nick arrived right as promised and assessed the situation, then quoted me a price and started working. Even though the job did not go quite as easily as hoped for, he kept patient and persevered. A remedy was reached and he left after a very long and tedious day. He is extremely polite and very pleasant answering my myriad of questions all day. I was very pleased that he took the time to explain the problems he encountered and offer alternate solutions.