Mohit C:
The non-precision (LOC) MAP occurs .5 miles prior to the threshold.
The descent gradient for the LOC procedure is measured from the non-precision FAF (6.5/7.9) to the threshold at TCH:
3,000 - (916 + 52) divided by 6.2 (distance from NPA FAF to threshold) = 327.74' feet per mile.
The descent gradient from the NPA FAF to the 2,200 stepdown is slightly different than the gradient from that point to the threshold. But, the rates shown are for the entire NPA segment and are rounded (unlike the precision "GS" descent gradients).
The procedure does not require checking the GS at the MM. The "1170" is just there for reference, should you choose to use it.