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Remark Codes

# National Water Information System
# 2021/04/22
# Date Retrieved: USGS Water Data for the Nation Help System
remark_cd	remark_nm
1s	36s
<	less than
>	greater than
A	average
E	estimated
M	presence verified but not quantified
N	presumptive evidence of presence
R	radchem non-detect, below ssLc
S	most probable value
U	analyzed for but not detected
V	value affected by contamination