▁" source ▁areas ": ▁chemical ▁waste ▁dispos al ▁p its , ▁a ▁land fill , ▁the ▁Area ▁B - Grid ▁and ▁the ▁Area ▁B - 2 0 ▁South ▁burn ▁area . ▁There ▁are ▁ 3 0 ▁additional ▁possible ▁areas . ▁Gr ound water ▁has ▁been ▁known ▁to ▁be ▁cont amin ated ▁with ▁vol atile ▁organ ic ▁comp ounds ▁tr ich lor o eth yl ene ▁( T CE ) ▁since ▁ 1 9 9 2 , ▁as ▁well ▁as ▁t et rach lor o eth ene , ▁both ▁on site ▁and ▁off site . ▁E ight ▁ 5 5 - g all on ▁drums ▁of ▁T CE ▁buried ▁in ▁Area ▁B ▁in ▁ 1 9 6 8 ▁are ▁believed ▁one ▁source ▁of ▁the ▁cont am ination . ▁Gr ound water ▁pl ume ▁model ing ▁is ▁difficult ▁due ▁to ▁underlying ▁kar st ▁form ations . ▁No ▁" Rec ords ▁of ▁Dec ision " ▁how ▁each ▁site ▁will ▁be ▁rem edi ated ▁have ▁been ▁signed ▁by ▁E PA ▁and ▁Army . ▁ ▁In ▁ 2 0 1 2 , ▁the ▁United ▁States ▁National ▁Research ▁Council ▁published ▁a ▁report ▁after ▁review ing ▁two ▁investig ations ▁of ▁potential ▁health ▁ha z ards ▁at ▁Fort ▁Det rick : ▁a ▁ 2 0 0 9 ▁public ▁health ▁assess ment ▁conducted ▁by ▁the ▁Agency ▁for ▁To xic ▁Sub st ances ▁and ▁D ise ase ▁Reg istry ▁and ▁a ▁cancer ▁investigation ▁in ▁Frederick ▁County ▁by ▁the ▁Maryland ▁Department ▁of ▁Health ▁and ▁M ental ▁H yg iene ▁and ▁the ▁Frederick ▁County ▁Health