2/12/1998 AD HOC COMMITTEE ON PLUMES Minutes

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AD-HOC COMMITTEE ON PLUMES IMPACTING MAS HPEE MINUTES FEBRUARY 1 # 1998 - GreLj Taylor , Chairman, called the faeeti.nLj to order at 8 : 35 a.m. g. in conference Room #2 at Mash-pee Town Hall* Present: Greg Taylor , Bob Whri tenour , Nancy Caffyn, Dave Rich, Elias McQuade , Bob Sherman. Also: Chris Foley , Bill Sterling Absent: Bob Craw, Elliot Rosenberg The Minutes of January 8 , 1998 were approved as amended. Chris Foley (an environmental officer with AFCEE) gave a presentation on surface water runoff , replacing Bill Sullivan who was unable to attend Chris F. explained the origin of the failure of the separator back on June 18 , 1996 , There was a. rain storm and an influx of water containing 300---400 ppb of fuel contaminated water sdilled over . LEEP was called to the site. Where was a complete analysis clone on why the s stefa failed , and it was corrected* The system was pressurized so that it will not go ud, and a. one- way check valve was installed. The last redort was 17 ppb* Chris F. identified SD-1 , 2 ,3 , 4 on the map , and stated that three rip-rap drains were 'installed and are being monitored b Bob S. asked for a tour of these areas since he has not visited thera in awhile. Nancy C. expressed concern about overflows f roi� SD-1 which could end up in Ashuiaet Pond. Chris F. stated that their goal is to contain and recharije within the bounds of the military property t He is very confident the problem is fixed Dave R. asked if the check valve is testable. Bill SterlinLj stated that since this is the floating ball type , the only way to test is to overflow 'it, Th.ere is raonthl scheduled maintenance performed by two deople , and this includes the oil. separators. Bill S. regularly checks their work. if the system fails , water will back up into the catch basins and flow when it can.