# # National Water Information System # 2024/10/03 # # # 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