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					     Indicators Contributing to EPA SOCs
            (for those SOCs with more than one contributing indicator)


              MassDEP UNDERGROUND STORAGE
                TANK BASELINE ASSESSMENT
                       ADDENDUM


8/10/2011                                                                1
                                                             OVERALL PERFORMANCE ON MEASURES CONTRIBUTING TO RELEASE PREVENTION
                                                                       SOC: Overfill Prevention Present and Functional for All Tanks


                                                   100%


                                                    90%
% of facilities in compliance (weighted average)




                                                    80%


                                                    70%


                                                    60%


                                                    50%


                                                    40%


                                                    30%


                                                    20%


                                                    10%


                                                     0%
                                                                                                                        High level overfill alarms are functioning and perceivable at
                                                                   Overfill devices are present for all tanks
                                                                                                                                            point of product transfer
                                                   Series1                           96%                                                               75%
                                                                                                Mass DEP UST Baseline Assessment
                                               8/10/2011                                                   Addenda                                                                  2
                                                             OVERALL PERFORMANCE ON INDIVIDUAL MEASURES CONTRIBUTING TO RELEASE
                                                                                           PREVENTION SOC:
                                                                     Corrosion Protection Systems Properly Operated and Maintained
                                                   100%

                                                    90%
% of facilities in compliance (weighted average)




                                                    80%

                                                    70%

                                                    60%

                                                    50%

                                                    40%

                                                    30%

                                                    20%

                                                    10%

                                                     0%
                                                            Impressed current                          Tank cathodic           Pipe cathodic
                                                                                Galvanic cathodic
                                                              cathodic tank                         protection systems      protection systems    Nonmetallic pipe    Nonmetallic tank
                                                                                 tank protection
                                                           protection systems                       passed a functional    passed a functional    outer wall is non   outer wall is non
                                                                                   systems are
                                                           have power and are                       test within required      test within the         metallic            metallic
                                                                                    functioning
                                                                operating                               time period        required time period
                                                   Series1         97%                91%                   73%                     86%                 96%                 97%



                                                                                               Mass DEP UST Baseline Assessment
                                               8/10/2011                                                 Addendum                                                                    3
                                                           OVERALL PERFORMANCE ON MEASURES CONTRIBUTING TO RELEASE DETECTION SOC:
                                                                      All Primary Release Detection Systems are Operating Properly


                                                  100%

                                                   90%
% facilities in compliance (weighted average)




                                                   80%

                                                   70%

                                                   60%

                                                   50%

                                                   40%

                                                   30%

                                                   20%

                                                   10%

                                                    0%
                                                                                                                                                                              Automatic Line
                                                                                                                                        Periodic pipe
                                                                                                                                                                              Leak Detection
                                                                                                     Interstitial                    tightness testing     Automatic Line
                                                            Automated tank                                            Release                                                 systems have
                                                                                                    monitoring                       was done within       Leak Detection
                                                              gauging and                                             Detection                                              been certified by
                                                                             Interstitial sensors system sumps                          required time     (ALLD) systems
                                                            continuous leak                                          monitoring                                              a third party and
                                                                               are operational are clean and free                    frame if used as    are operating and
                                                           detection systems                                      console is present                                             passed a
                                                                                                   of debris and                     the primary pipe    showing no threat
                                                            are operational                                        and functioning                                            functional test
                                                                                                       water                           leak detection        of release
                                                                                                                                                                              within past 12
                                                                                                                                          technique
                                                                                                                                                                                  months
                                                 Series1         99%                91%               71%                96%                87%                98%                  68%

                                                8/10/2011                                         Mass DEP UST Baseline Assessment                                                        4
                                                                                                            Addendum
                                                            OVERALL PERFORMANCE ON MEASURES CONTRIBUTING TO RELEASE DETECTION SOC:
                                                                        All Release Detection Systems Meet Performance Standards

                                                   100%

                                                    90%
% of facilities in compliance (weighted average)




                                                    80%

                                                    70%

                                                    60%

                                                    50%

                                                    40%

                                                    30%

                                                    20%

                                                    10%

                                                      0%
                                                            Facility can document
                                                                                                                      Automatic Line Leak
                                                           that tank and Interstitial
                                                                                                                     Detection systems have                               High level overfill alarms
                                                              monitoring release        Pipe tightness test could
                                                                                                                     been certified by a third    Overfill devices are      are functioning and
                                                            detection system have         detect 0.1 gallon per
                                                                                                                       party and passed a         present for all tanks    perceivable at point of
                                                           been properly operated,                hour
                                                                                                                    functional test within past                               product transfer
                                                                callibrated and
                                                                                                                            12 months
                                                                  maintained
                                                   Series1            72%                        100%                          68%                        96%                       75%

                                               8/10/2011                                             Mass DEP UST Baseline Assessment                                                           5
                                                                                                               Addendum
                                                         OVERALL PERFORMANCE ON MEASURES CONTRIBUTING TO RELEASE DETECTION SOC:
                                                               Proper Response to Suspected Releases (Non Passing Results) as Required

                                                100%


                                                 90%


                                                 80%
% facilities in compliance (weighted average)




                                                 70%


                                                 60%


                                                 50%


                                                 40%


                                                 30%


                                                 20%


                                                 10%


                                                   0%
                                                         If there evidence of a potential The facility can document that it The facility can document that it The facility can document that it
                                                        release at the time of inspection      responded to failed or            responded to failed or       responded properly if the ALLD
                                                          there is an system repair ctive  inconclusive release detection     inconclusive pipe tightness     system failed the last functional
                                                                    repair order                  results properly                    tests properly                         test
                                                Series1                 0%                               81%                                0%                               0%
                                                                                                 Mass DEP UST Baseline Assessment
                                            8/10/2011                                                                                                                                      6
                                                                                                           Addendum
                                                                 OVERALL PERFORMANCE ON INDIVIDUAL MEASURES CONTRIBUTING TO RELEASE
                                                                                                DETECTION SOC:
                                                   100%                    All Tanks and Pipes are Monitored Monthly and Records Kept


                                                    90%


                                                    80%
% of facilities in compliance (weighted average




                                                    70%


                                                    60%


                                                    50%


                                                    40%


                                                    30%


                                                    20%


                                                    10%


                                                      0%
                                                               Continual statistical leak         Six hour in tank release                                      Periodic pipe tightness testing
                                                                                                                                Release detection records for
                                                           detection is used it is performed      detection tests are done                                      was done within required time
                                                                                                                                   the past 12 months are
                                                           daily if used as the primary tank   monthly if used as the primary                                    frame if used as the primary
                                                                                                                                          available
                                                               leak detection technique        tank leak detection technique                                    pipe leak detection technique
                                                   Series1                96%                               94%                             63%                              87%

                                                                                                     Mass DEP UST Baseline Assessment
                                                  8/10/2011                                                    Addendum                                                                      7

				
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posted:8/26/2012
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