The information about the maintenance of a water quality or other type of moniter, during a site visit. The monitor being inspected. The data monitor battery voltage, as measured during monitor maintenance activity of the site visit. Was the data monitor battery charged during monitor maintenance activity of the site visit (true or false)?. Were the water quality monitor sensors cleaned (true or false)? Was the sensor wiper cleaned during the monitor maintenance activity of the site visit (true or false)? Was the water quality sonde changed during themonitor maintenance aqctivity of the site visit (true or false)? The new sonde (monitor) that replaced the old sonde. Comments about the data monitor maintenance. Comments about the fouling of the data monitor sensors.