Belte r r a Cor p or at ion S afety M an ual D oc I D C H S M BE L 2 0 1 7 Pa g e 1 60 of 53 8 Doc u m e n t Identif icat ion S E L 018 P age Nu m b e r 10 of 19 Doc u m e n t C r e ation Dat e J a nua r y 1 2013 Im p le m e n tat ion Dat e o n Re vised Doc u m e n t Apr il 26 2016 92 C ombus ti ble G a se s A f lammable g a s or v a po r in e x c e ss of 10 of it s lowe r e x plosi ve li mi t L E L y e t st il l re maining be l ow the uppe r e x plosi ve li mi t U E L 93 Tox ic G a se s An a tm osphe ric c on c e ntr a ti on of a n y tox ic c ompound above the pe rmiss ibl e e x posure li mi t esta bli sh e d b y N I OSH or ACG I H is cla ssi fie d a s Tox ic G a s Ex a mpl e s of c omm on to x ic g a se s found in a c onf ined spa c e