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1 0 0 <br />Provides two methods of direct communication with the station sites: Daily <br />Polling, where the site is contacted automatically once a day, and Snapshot <br />Request, manual operator action for immediate data updating. <br />• The system is "user-friendly", and it contains context -sensitive "help" screens <br />for ease of operations and training. <br />A) SYSTEM 1/O SPECIFICATIONS <br />• Tank Level Monitoring (TLM) and Leak Detection: <br />Monitors 8 in -ground storage tanks of sizes varying to 15,000 gal nominal <br />capacity. <br />• Interstitial Tank Monitoring for double-wall Tanks: <br />Monitors 8 in -ground storage tanks by using various water and liquid <br />hydrocarbon probes to differentiate liquid hydrocarbon from water. <br />• Product Line Monitoring and Line Leak Detection: <br />Monitors 6 pressurized piping systems of varying line sizes and types of <br />materials. <br />• Internal Containment Monitoring, as follows: <br />Uses various floating wet/dry/hydrocarbon probes to differentiate liquid <br />hydrocarbon from water. <br />1) Tank Sump Monitor, for STP and piping, <br />Monitors 6 locations. <br />2) Dispenser Box Monitor, for dispenser and piping, <br />for 12 locations. <br />• External Ground Monitoring, for wells: <br />Monitors 6 locations by using various floating liquid hydrocarbon or vapor <br />probes. <br />1) Ground Water Monitor <br />2) Ground Vapor Monitor <br />B) LANK MONITORING AND LEAK DETECTION <br />1) MONITORING SPECIFICATIONS FOR 02EBAIMMS <br />y Real Time information for each individual tank including: <br />Current Inventory (based on tank level measurement) <br />Ullage Quantity (useable capacity less inventory) <br />Usable Capacity (actual tank capacity less 10%) <br />Water Level (in inches or millimeters) <br />I Page 3 <br />