5103_JohnstonLF_leachatecleanouts_20200131

3
M
C)
a
z
0
L
V
C
t
O
'C
0
0
s
Q
0
'k
TOPOGRAPHY PROVIDED BY GEODATA CORPORATION, BASED2, 2005 AERIAL PHOTOGRAPHY. TOPOGRAPHY IN LANDFILL ANDORROW
AREAS PROVIDED BY GEODATA CORPORATION BASED ONHOTOGRAPHY DATED MAY 27, 2016 AND JUNE 18, 2018
FSITE
COLLEC110N PIPING FROM AS -BUILT SURVEY DATED 2/26/97,
— ��/
//
/ ��i 1 \\� �
l\\
ASSOCIATES.
IN PHASE 5 AREA REPRESENT TOP OF PROTECTIVE COVER
%/ /
// /
H5 1
w
Ike
--250'
500,
PREPARED FOR:
DRAWN:
APPROVED:
SCALE:
DATE:
PREPARED BY: NC LIC. NO. F-13701ENGINEERINGI
SC COA NO, C01488
LEACHATE COLLECTION PIPE CLEANOUT LOCATIONS
C.T.J.
P.K.S.
AS
SHOWN
Mar 2019
SMITH+GARONER
MSW PHASES 5 8 6
PROJECT NO.:
FIGURE NO.:
FILENAME:
J O H N 16-4
3 B
J O H N -AO773
14 N. Boylan Avenue, Raleigh NC 27603 1919.828.0577
1526 Richland St., Columbia SC 29201
© 2019 Smith Gardner, Inc.

From Response to Comments letter, dated 1-22-2020
2. In Phases Sand 6, please provide a description of which leachate lime clean -out
points will be covered ever and not accessible in the future, and whether those
leachate lines will be accessible for cleaning from the sump end. Will the leachate
lines in either Phases 5 or 6 be extended to the adjacent future phases?
Phase 5 Cleanouts: development of Phase 6 will cause three cleanouts along the
west side of Phase 5 to be covered over. Upon future development of Phase 10, two
cleanouts on the south end of Phase 5 wall be covered over. Three cleanouts along
the east side of phase 5 will remain long-term and these cleanouts will aLlow the
flushing of the majority of the leachate collection system piping within Phase 5. The
northernmost cleanout along the east side of Phase 5 leads directly to the gravity
sump near the northwest corner of Phase 5.
Phase 6 Cleanouts: Future development of Phase 7 will cause the westernmost
cleanout at the south end of Phase 6 to he covered over. The central cleanout on the
south end of Phase 6 can be extended during construction of Phase 7. This extended
cleanout and the easternmost cleanout at the south end of Phase 6 will remain
accessible until future development of Phase 10. All Lear -hate collection pipes in
Phase 6 will remain accessible long-term from the north end of Phase 6.