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# National Water Information System
# 2025/07/06
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# Date Retrieved: USGS Water Data for the Nation Help System
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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