# # National Water Information System # 2024/10/03 # # # Date Retrieved: USGS Water Data for the Nation Help System # rpt_lev_cd rpt_lev_nm 6s 40s DLBLK Detection limit by Blank Data DLDQC Detection limit by DQCALC INT Interim reporting level IRL Interim reporting level LOD Limit of Detection LOQ Limit of Quantitation LRL Laboratory reporting level LT-MDL Long term method detection level MDL Method detection limit MRL Minimum reporting level PQL Practical Quantitation Limit RLBLK Reporting limit by Blank Data RLDQC Reporting limit by DQCALC SSLC Sample-specific critical level SSMDC Sample-specific min detect concentration