ades ▁K - 3 . ▁Salt ar ' s ▁Point ▁Element ary ▁in ▁Ste il aco om ▁now ▁serves ▁ 4 th ▁and ▁ 5 th ▁gr ades . ▁P ione er ▁Middle ▁School ▁re located ▁from ▁Ste il aco om ▁to ▁Du P ont ▁in ▁August ▁ 2 0 0 8 . ▁The ▁new ▁school ▁received ▁the ▁LE ED ▁award ▁for ▁its ▁" Green " ▁Design ▁elements . ▁ ▁Du P ont ▁is ▁divided ▁into ▁several ▁sub div isions , ▁each ▁with ▁its ▁own ▁design ▁style ▁and / or ▁building ▁contract ors . ▁North west ▁Land ing ▁is ▁the ▁most ▁visible ▁due ▁to ▁a ▁sign ▁along ▁the ▁fre ew ay ▁announ cing ▁it . ▁Several ▁business es ▁have ▁opened ▁in ▁the ▁dow nt own ▁area , ▁but ▁development ▁has ▁slow ed ▁in ▁recent ▁years . ▁Hoff man ▁Hill ▁is ▁the ▁largest ▁in ▁area , ▁and ▁houses ▁about ▁ 6 0 % ▁of ▁the ▁total ▁population . ▁The ▁Historic ▁Village , ▁a ▁resident ial ▁area , ▁is ▁the ▁only ▁part ▁of ▁Du P ont ▁that ▁is ▁not ▁a ▁modern ▁planned ▁community ▁and ▁is ▁on ▁the ▁registry ▁of ▁historic ▁places . ▁Bell ▁Hill ▁is ▁considered ▁the ▁most ▁expensive ▁area . ▁Du P ont ▁has ▁tra ils ▁and ▁green ▁bel ts ▁throughout , ▁and ▁is ▁about ▁ 9 5 % ▁built ▁out ▁according ▁to ▁the ▁master ▁plan . ▁ ▁On ▁December ▁ 1 8 , ▁ 2 0 1 7 , ▁an ▁Am tra k ▁train ▁der a iled ▁near ▁Du P ont , ▁killing