Upon arrival customer explained to me for the past 15 years he has had trouble with getting air into his water lines and it has gotten worse he explained that he pressure tested line from well head to home and after a minute and 50 seconds he would drop from 60 to 0 psi and when trying to pressure test line going to pump he could only get 28psi Customer ran water in bathtub and as sone as pump would turn on lots of air would start rushing into the home due to water loss between check valve at tank and well head provided options to customer and he decided to have pulled and replaced and have main line replaced from well head to home we will be returning Friday to start and complete work