ULTRAMAR DIAMOND SHAMROCK, A.K.A. AS TOTAL PETROLEUM, INC. FAILED TO RPOVIDE A METHOD OF RELEASE DETECTION THAT IS INSTALLED, CALIBRATED, OPERATED AND MAINTAINED IN ACCORDANCE WITH THE MANUFACTURER'S INSTRUCTIONS. RESPONDENT'S TANK 1 UST SYSTEM DID NOT MEET THE MONTHLY INVENTORY CONTROL REQUIREMENTS; THERE WAS NO DATA FOR TANK 1 FROM 1/31/97 TO 4/30/99 CONTAINED IN THE RECORDS. RESPONDENT FAILED TO MONITOR TANK 2 FOR RELEASE DETECTION. RESPONDENT ALSO FAILED TO REPORT SUSPECTED RELEASES. PROPOSED PENALTY IS $33,751.00.