HE-0013_Drainage_Redlines_20230912_SPL comments_11_13_23_Additional_Information

Comments from Susan Locklear (NCDEQ) on 11/13/2023.
Responses from Matthew Edwards (Sungate) on 11/16/2023.
Why is GTD directing flow to fill slope and not away from fill slope? Is toe protection needed? Where is
flow intended to go ... South? Is conveyance needed under driveway at 18+00?
Below are cross sections 18+50 -L- (Image 1), 19+00 -L- (Image 2), 19+50 -L- (Image 3), close-up of the tie
at 19+50 -L- RT (Image 4), and 20+00 -L- RT (Image 5). Technically, the slope stake line is fill, but runoff
from the mound here will go to the TB 2GIs and then south to the special 2' base ditch with class 'I' rip
rap. Toe protection is not needed. Conveyance is not needed for the driveway at 18+00 -L- RT. There is
0.008 ac there that will either go across the drive or go into TB 2G1 #0408.
Image 1: Cross section of 18+50 -L- right side. Shows proposed tie to natural ground that is technically fill.
Image 2: Cross section of 19+00 -L- right side. Shows proposed tie to natural ground that is technically fill.

Image 3: Cross section of 19+50 -L- right side. Shows proposed tie to natural ground that is technically fill.
Image 4: Close-up of 19+50 -L- right side. Shows proposed tie to natural ground that is technically fill.

Image 5: Close-up of 20+00 -L- right side. Shows proposed tie to natural ground that is technically fill.