Performed leak detection and found customers cold water line coming from half bathroom/bar sink feeding kitchen sink was leaking under foundation. Due to customer having a leak previously on this line and having a leak on the line that feeds from the kitchen sink to refrigerator that has since been capped off, i recommended performing a re route of both lines. Explained to customer that since we has an island sink we can attempt to feed a 3/8 line through the existing soft copper that runs from the fridge to the sink and connect the feed to the faucet to the 3/8 line. Doing this will avoid having to saw cut and jackhammer approximately 15’ of concrete in order to run a new line. If we are unable to feed the 3/8 line through the copper than we will need to perform the jackhammering. Explained to customer I will send over two estimates. One for performing the re-route and feeding the PEX line inside of the existing copper over to sink, and the other estimate for performing the re route