TM 5-813-3/AFM 88-10, Vol 3
dium is 32 inches, consisting of 8 inches of filter-grade
sand, 4 inches of coarse sand, and 20 inches of filter-
h. Postchlorination, Provide two solution-type
chlorinators for application of chlorine to the filtered
water, as required, to supply a suitable residual in the
water delivered to service, Normally, one chlorinator
will be in use with the other serving as a standby.
Maximum dosage capacity of each chlorinator should
be approximately 5 mg/L for the total plant flow rate.