41 Primer o sus t ainability re P or t 2013 ai R Q u ality mea S u R ement i n 20 13 w e eng ag ed a thir dpar t y c ontr act or On Sit e Analitica de Mexic o S A de C V t o carry out an atmospheric study of the San Dimas oper ation P ar ticulat es fr om mining pr oc es ses w er e in c omplianc e with r egulations T ABLE 13 t o t al Su S pended p a R ti C ula te S nom 043 S ema R na t 199 3 p r o ce s s l imits mg m 3 20 11 20 12 20 13 R efinery 480 38 4 9 2 28 Sample P r epar ation 600 8 0 15 28 Labor at ory 75 0 4 9 00 4 6 Labor at ory r efinery 57 0 9 8 3 4 25 Crushing Dust C ollect or 1 41 0 80 8 15 9 36 1 Crushing Dust C ollect or 2 400 13 7 5 2 140 3 Emis sions fr om the plant s hot oil heat er at the r efnery w er e in c omplianc e with r egulations NOM085 SEMARNA T 199 4 f or burner s with heating capacit y of les s than 5 250 Mj h W a S te mana G ement i n an y mining oper ation w ast e mat erials ar e g ener at ed T hese w ast es ar e cat eg oriz ed as Nonhaz ar dous pr oc es s w ast e mining w ast e which includes w ast e r ock and mat erials that ar e r emo v ed in or der t o ac c es s the miner aliz ed or e and the tailings Nonhaz ar dous g ener al w ast e which includes scr ap st eel pack aging and other nonhaz ar dous discar ded mat erials and domestic w ast e Haz ar dous w ast es mat erials that can pose a thr eat t o health unles s saf ely manag ed such as used oil or gr ease c ontaminat ed soil chemical pack aging batt eries et c T he f ollo wing table pr esents the r esults of thr ee y ear s of measur ement A t San Dimas the Haz ar dous W ast e Manag ement Plan establishes pr oc edur es f or planning r educing c ollecting st oring tr anspor ting and perf orming fnal disposal of haz ar dous r esidues T he Mining W ast e Manag ement Plan ensur es that the ar eas wher e w ast es will be st or ed c omply with saf et y measur es that ensur e the stabilit y of the deposit and pr e v ent acid dr ainag e leachat e and runoff s int o the en vir onment including monit oring i n 20 13 permitting w as r ec eiv ed and c onstruction beg an on a ne w w ast e r ock st or ag e ar ea C onstruction is nearing c ompletion Haz ar dous w ast es incr eased c ompar ed t o 20 12 because the oper ation s chemical supplier st opped allo wing the r eturn of the c ontaminat ed pack aging f or r eag ents A dditionally the v olume of mat erials r ec o v er ed fr om sump maint enanc e incr eased All haz ar dous mat erials ar e c ollect ed st or ed tr anspor t ed and fnally disposed in a manner c onsist ent with the haz ar dous w ast e manag ement plan f or fnal disposal