14 Notes 1 A ll stone must be angular stone meeting ASTM D2321 R e cy cled c oncrete may be utilized when meeting ac c e p t able gr ada tion and ASTM st andards 2 S t or age o f ma terials such as c onstruc tion ma terials equipment soils etc o v er the module s y s tem is stric tly prohibited 3 P l ease c o nt ac t a G e o t echnic al E ngineer and the B r entw ood represent a tiv e prior to utiliza tion o f any ma terial no t listed a b ove Ma terial L o ca tion Description AASHT O M43 Designa tion ASTM D2321 Class C ompac tionDensity F inished Sur fac e T o psoil hardsc ape stone c oncrete or asphalt per E ngineer o f R e c o rd N A N A P r epare per engineered plans Suitable C ompac table F ill W ellgr aded gr anular soil aggrega te typic ally road base or earthen l maximum 4 particle size 56 57 6 67 68 I II III E arth Only P lac e in maximum 12 lif t s to a minimum 90 st andard proc tor density T op Backf ll Crushed angular stone plac ed betw een Modules and road base or earthen ll 56 57 6 67 68 I II P l a t e vibr a t e to pro vide ev enly distributed lay e r s Side Backf ll Crushed angular stone plac ed betw een earthen wall and Modules 56 57 6 67 68 I II P lac e and pla te vibr a t e in unif orm 12 lif t s around the s y s tem L e v eling B e d Crushed angular stone plac ed to pro vide lev e l surf ac e f or inst alla tion o f Modules 56 57 6 67 68 I II P l a t e vibr a t e to achiev e lev el surf ac e appendix C a ccept able fill ma terials