If your ATG does not do inventory control, do inventory control on paper. Water in monitoring wells must always be within 20 feet of surface. Wells must be installed in a permeable backfill in tank pit. Must be used every 30 days. Groundwater monitoring is not allowed as leak detection option if tank excavation encounters bedrock.
Equipment detects vapors through a variety of methods.
Equipment is sensitive and has rapid response time but may generate false alarms due to background contamination. Enough vapor wells must be installed and operated so a leak can be detected within 30 days. Take readings every 30 days. Report results on a monitoring well log. Monitoring wells must be clearly marked and secure.