# # National Water Information System # 2024/12/04 # # # Date Retrieved: USGS Water Data for the Nation Help System # parm_cd group parm_nm epa_equivalence result_statistical_basis result_time_basis result_weight_basis result_particle_size_basis result_sample_fraction result_temperature_basis CASRN SRSName parm_unit 5s 29s 166s 26s 0s 0s 3s 14s 14s 6s 10s 42s 10s 00191 Inorganics, Major, Non-metals Hydrogen ion, water, unfiltered, calculated, milligrams per liter Agree Total 12408-02-5 Hydrogen ion mg/l 00300 Inorganics, Major, Non-metals Dissolved oxygen, water, unfiltered, milligrams per liter Agree Dissolved 7782-44-7 Dissolved oxygen (DO) mg/l 00301 Inorganics, Major, Non-metals Dissolved oxygen, water, unfiltered, percent of saturation Agree Dissolved 7782-44-7 Dissolved oxygen saturation % saturatn 00405 Inorganics, Major, Non-metals Carbon dioxide, water, unfiltered, milligrams per liter Agree Total 124-38-9 Carbon dioxide mg/l 00409 Inorganics, Major, Non-metals Acid neutralizing capacity, water, unfiltered, Gran titration, microequivalents per liter Agree Total Alkalinity ueq/L 00410 Inorganics, Major, Non-metals Acid neutralizing capacity, water, unfiltered, fixed endpoint (pH 4.5) titration, field, milligrams per liter as calcium carbonate Not checked Total Alkalinity mg/l CaCO3 00411 Inorganics, Major, Non-metals Acid neutralizing capacity, water, unfiltered, methyl orange endpoint (pH 3.1-4.4) titration, milligrams per liter as calcium carbonate Not checked Total Alkalinity mg/l CaCO3 00413 Inorganics, Major, Non-metals Acid neutralizing capacity, water, unfiltered, Gran titration, milligrams per liter as calcium carbonate Agree Total Alkalinity mg/l CaCO3 00415 Inorganics, Major, Non-metals Acid neutralizing capacity, water, unfiltered, phenolphthalein endpoint (pH 8.5-9.0) titration, milligrams per liter as calcium carbonate Not checked Total Alkalinity mg/l CaCO3 00416 Inorganics, Major, Non-metals Acid neutralizing capacity, water, unfiltered, inflection-point titration method (incremental titration method), laboratory, milligrams per liter as calcium carbonate Not checked Total Alkalinity mg/l CaCO3 00417 Inorganics, Major, Non-metals Acid neutralizing capacity, water, unfiltered, fixed endpoint (pH 4.5) titration, laboratory, milligrams per liter as calcium carbonate Not checked Total Alkalinity mg/l CaCO3 00418 Inorganics, Major, Non-metals Alkalinity, water, filtered, fixed endpoint (pH 4.5) titration, field, milligrams per liter as calcium carbonate Not checked Dissolved Alkalinity mg/l CaCO3 00419 Inorganics, Major, Non-metals Acid neutralizing capacity, water, unfiltered, inflection-point titration method (incremental titration method), field, milligrams per liter as calcium carbonate Not checked Total Alkalinity mg/l CaCO3 00420 Inorganics, Major, Non-metals Hydroxide, water, unfiltered, milligrams per liter Not checked Total 14280-30-9 Hydroxide mg/l 00421 Inorganics, Major, Non-metals Alkalinity, water, filtered, fixed endpoint (pH 4.5) titration, laboratory, milligrams per liter as calcium carbonate Not checked Dissolved Alkalinity mg/l CaCO3 00425 Inorganics, Major, Non-metals Bicarbonate, water, unfiltered, milligrams per liter as calcium carbonate Not checked Total 71-52-3 Bicarbonate mg/l CaCO3 00430 Inorganics, Major, Non-metals Carbonate, water, unfiltered, milligrams per liter as calcium carbonate Not checked Total 3812-32-6 Carbonate (CO3) mg/l CaCO3 00431 Inorganics, Major, Non-metals Acid neutralizing capacity, water, unfiltered, milligrams per liter as calcium carbonate Not checked Total Alkalinity mg/l CaCO3 00435 Inorganics, Major, Non-metals Acidity, water, unfiltered, milligrams per liter as calcium carbonate Not checked Total Acidity mg/l CaCO3 00436 Inorganics, Major, Non-metals Mineral acidity, water, unfiltered, methyl orange endpoint (pH 3.1-4.4) titration, milligrams per liter as calcium carbonate Not checked Total Acidity, mineral methyl orange (as CaCO3) mg/l CaCO3 00437 Inorganics, Major, Non-metals Carbon dioxide acidity, water, unfiltered, phenolphthalein endpoint (pH 8.5-9.0) titration, milligrams per liter as calcium carbonate Not checked Total Acidity, total, phenolphthalein (as CaCO3) mg/l CaCO3 00440 Inorganics, Major, Non-metals Bicarbonate, water, unfiltered, fixed endpoint (pH 4.5) titration, field, milligrams per liter Not checked Total 71-52-3 Bicarbonate mg/l 00445 Inorganics, Major, Non-metals Carbonate, water, unfiltered, fixed endpoint (pH 8.3) titration, field, milligrams per liter Not checked Total 3812-32-6 Carbonate (CO3) mg/l 00446 Inorganics, Major, Non-metals Carbonate, water, unfiltered, inflection-point titration method (incremental titration method), laboratory, milligrams per liter Not checked Total 3812-32-6 Carbonate (CO3) mg/l 00447 Inorganics, Major, Non-metals Carbonate, water, unfiltered, inflection-point titration method (incremental titration method), field, milligrams per liter Not checked Total 3812-32-6 Carbonate (CO3) mg/l 00448 Inorganics, Major, Non-metals Carbonate, water, unfiltered, fixed endpoint (pH 8.3) titration, laboratory, milligrams per liter Not checked Total 3812-32-6 Carbonate (CO3) mg/l 00449 Inorganics, Major, Non-metals Bicarbonate, water, unfiltered, inflection-point titration method (incremental titration method), laboratory, milligrams per liter Not checked Total 71-52-3 Bicarbonate mg/l 00450 Inorganics, Major, Non-metals Bicarbonate, water, unfiltered, inflection-point titration method (incremental titration method), field, milligrams per liter Not checked Total 71-52-3 Bicarbonate mg/l 00451 Inorganics, Major, Non-metals Bicarbonate, water, unfiltered, fixed endpoint (pH 4.5) titration, laboratory, milligrams per liter Not checked Total 71-52-3 Bicarbonate mg/l 00452 Inorganics, Major, Non-metals Carbonate, water, filtered, inflection-point titration method (incremental titration method), field, milligrams per liter Not checked Dissolved 3812-32-6 Carbonate (CO3) mg/l 00453 Inorganics, Major, Non-metals Bicarbonate, water, filtered, inflection-point titration method (incremental titration method), field, milligrams per liter Not checked Dissolved 71-52-3 Bicarbonate mg/l 00597 Inorganics, Major, Non-metals Dinitrogen, water, unfiltered, milligrams per liter Not checked Dissolved 7727-37-9 Nitrogen mg/l 00598 Inorganics, Major, Non-metals Dinitrogen, water, unfiltered, percent of saturation Not checked Dissolved 7727-37-9 Nitrogen % 00682 Inorganics, Major, Non-metals Carbon [inorganic plus organic], water, filtered, milligrams per liter Agree Dissolved 7440-44-0 Total Carbon mg/l 00685 Inorganics, Major, Non-metals Inorganic carbon, water, unfiltered, milligrams per liter Agree Total Inorganic carbon mg/l 00686 Inorganics, Major, Non-metals Inorganic carbon, bed sediment, total, dry weight, grams per kilogram Agree Dry Bed Sediment Inorganic carbon g/kg 00688 Inorganics, Major, Non-metals Inorganic carbon, suspended sediment, total, milligrams per liter Agree Suspended Inorganic carbon mg/l 00690 Inorganics, Major, Non-metals Carbon [inorganic plus organic], water, unfiltered, milligrams per liter Agree Total 7440-44-0 Total Carbon mg/l 00691 Inorganics, Major, Non-metals Inorganic carbon, water, filtered, milligrams per liter Agree Dissolved Inorganic carbon mg/l 00693 Inorganics, Major, Non-metals Carbon [inorganic plus organic], bed sediment, total, dry weight, grams per kilogram Agree Dry Bed Sediment 7440-44-0 Total Carbon g/kg 00694 Inorganics, Major, Non-metals Carbon [inorganic plus organic], suspended sediment, total, milligrams per liter Agree Suspended 7440-44-0 Total Carbon mg/l 00709 Inorganics, Major, Non-metals Fluorine, adsorbable organic, water, unfiltered, nanograms per liter Not checked Total ng/l 00710 Inorganics, Major, Non-metals Fluorine, solids, dry weight, nanograms per kilogram Not checked Dry Total ng/kg 00711 Inorganics, Major, Non-metals Fluorine, biota, tissue, wet weight, nanograms per kilogram Not checked Wet Total ng/kg 00712 Inorganics, Major, Non-metals Fluorine, extractable organic, solids, dry weight, nanograms per kilogram Not checked Dry ng/kg 00713 Inorganics, Major, Non-metals Fluorine, extractable organic, biota, tissue, wet weight, nanograms per kilogram Not checked Wet ng/kg 00714 Inorganics, Major, Non-metals Fluorine, extractable organic, water, unfiltered, nanograms per liter Not checked Total ng/l 00737 Inorganics, Major, Non-metals Thiosulfate, water, filtered, milligrams per liter Agree Dissolved 14383-50-7 Thiosulfate mg/l 00745 Inorganics, Major, Non-metals Sulfide, water, unfiltered, milligrams per liter Agree Total 18496-25-8 Sulfide mg/l 00746 Inorganics, Major, Non-metals Sulfide, water, filtered, milligrams per liter Agree Dissolved 18496-25-8 Sulfide mg/l 00940 Inorganics, Major, Non-metals Chloride, water, filtered, milligrams per liter Not checked Dissolved 16887-00-6 Chloride mg/l 00945 Inorganics, Major, Non-metals Sulfate, water, filtered, milligrams per liter Not agree Dissolved 14808-79-8 Sulfate mg/l 00946 Inorganics, Major, Non-metals Sulfate, water, unfiltered, milligrams per liter Not agree Total 14808-79-8 Sulfate mg/l 00950 Inorganics, Major, Non-metals Fluoride, water, filtered, milligrams per liter Agree Dissolved 16984-48-8 Fluoride mg/l 00951 Inorganics, Major, Non-metals Fluoride, water, unfiltered, milligrams per liter Agree Total 16984-48-8 Fluoride mg/l 00953 Inorganics, Major, Non-metals Fluorine, water, unfiltered, micrograms per liter Agree Total 7782-41-4 Fluorine ug/l 00954 Inorganics, Major, Non-metals Silica, water, unfiltered, recoverable, micrograms per liter as SiO2 Not checked Recoverable 7631-86-9 Silica ug/l 00955 Inorganics, Major, Non-metals Silica, water, filtered, milligrams per liter as SiO2 Agree Dissolved 7631-86-9 Silica mg/l 00956 Inorganics, Major, Non-metals Silica, water, unfiltered, milligrams per liter as SiO2 Agree Total 7631-86-9 Silica mg/l 01140 Inorganics, Major, Non-metals Silicon, water, filtered, micrograms per liter Agree Dissolved 7440-21-3 Silicon ug/l 01142 Inorganics, Major, Non-metals Silicon, water, unfiltered, micrograms per liter Not checked Total 7440-21-3 Silicon ug/l 01207 Inorganics, Major, Non-metals Fluoride, total, dry atmospheric deposition, milligrams per kilogram Not checked Total 16984-48-8 Fluoride mg/kg 01394 Inorganics, Major, Non-metals Carbon (inorganic plus organic), bed sediment, total, dry weight, percent USGS use and no use by EPA Dry Bed Sediment 7440-44-0 Total Carbon % 01398 Inorganics, Major, Non-metals Sulfur, bed sediment, total digestion, dry weight, percent USGS use and no use by EPA Dry Bed Sediment 7704-34-9 Sulfur % 01426 Inorganics, Major, Non-metals Sulfur, soil, total digestion, dry weight, percent USGS use and no use by EPA Dry Total 7704-34-9 Sulfur % 01463 Inorganics, Major, Non-metals Carbon [inorganic plus organic], biota, tissue, total, dry weight, percent Not checked Dry 7440-44-0 Total Carbon % 01466 Inorganics, Major, Non-metals Sulfur, biota, tissue, total digestion, dry weight, percent Not checked Dry 7704-34-9 Sulfur % 03941 Inorganics, Major, Non-metals Carbon [inorganic plus organic], bed sediment smaller than 62.5 microns, wet sieved, laboratory, total, dry weight, percent Not checked Dry < 0.0625 Bed Sediment 7440-44-0 Total Carbon % 03945 Inorganics, Major, Non-metals Sulfur, bed sediment smaller than 62.5 microns, wet sieved, laboratory, total digestion, dry weight, percent Not checked Dry < 0.0625 Bed Sediment 7704-34-9 Sulfur % 04066 Inorganics, Major, Non-metals Inorganic carbon, bed sediment smaller than 62.5 microns, wet sieved (native water), total, dry weight, milligrams per kilogram Not checked Dry < 62.5 microns Bed Sediment Inorganic carbon mg/kg 04067 Inorganics, Major, Non-metals Inorganic carbon, bed sediment smaller than 177 microns, wet sieved (native water), total, dry weight, milligrams per kilogram Not checked Dry < 177 microns Bed Sediment Inorganic carbon mg/kg 04068 Inorganics, Major, Non-metals Inorganic carbon, bed sediment smaller than 62.5 microns, dry sieved, total, dry weight, milligrams per kilogram Not checked Dry < 62.5 microns Bed Sediment Inorganic carbon mg/kg 04069 Inorganics, Major, Non-metals Inorganic carbon, suspended sediment smaller than 62.5 microns, wet sieved (native water), total, dry weight, milligrams per kilogram Not checked Dry < 62.5 microns Suspended Inorganic carbon mg/kg 04070 Inorganics, Major, Non-metals Inorganic carbon, suspended sediment larger than 62.5 microns, wet sieved (native water), total, dry weight, milligrams per kilogram Not checked Dry > 62.5 microns Suspended Inorganic carbon mg/kg 04076 Inorganics, Major, Non-metals Carbon [inorganic plus organic], bed sediment smaller than 62.5 microns, wet sieved (native water), total, dry weight, milligrams per kilogram Not checked Dry < 62.5 microns Bed Sediment 7440-44-0 Total Carbon mg/kg 04077 Inorganics, Major, Non-metals Carbon [inorganic plus organic], bed sediment smaller than 177 microns, wet sieved (native water), total, dry weight, milligrams per kilogram Not checked Dry < 177 microns Bed Sediment 7440-44-0 Total Carbon mg/kg 04078 Inorganics, Major, Non-metals Carbon [inorganic plus organic], bed sediment smaller than 62.5 microns, dry sieved, total, dry weight, milligrams per kilogram Not checked Dry < 62.5 microns Bed Sediment 7440-44-0 Total Carbon mg/kg 04079 Inorganics, Major, Non-metals Carbon [inorganic plus organic], suspended sediment smaller than 62.5 microns, wet sieved (native water), total, dry weight, milligrams per kilogram Not checked Dry < 62.5 microns Suspended 7440-44-0 Total Carbon mg/kg 04080 Inorganics, Major, Non-metals Carbon [inorganic plus organic], suspended sediment larger than 62.5 microns, wet sieved (native water), total, dry weight, milligrams per kilogram Not checked Dry > 62.5 microns Suspended 7440-44-0 Total Carbon mg/kg 29797 Inorganics, Major, Non-metals Bicarbonate, water, unfiltered, Gran titration, field, milligrams per liter USGS use and no use by EPA Total 71-52-3 Bicarbonate mg/l 29798 Inorganics, Major, Non-metals Carbonate, water, unfiltered, Gran titration, field, milligrams per liter USGS use and no use by EPA Total 3812-32-6 Carbonate (CO3) mg/l 29799 Inorganics, Major, Non-metals Hydroxide, water, unfiltered, Gran titration, field, milligrams per liter USGS use and no use by EPA Total 14280-30-9 Hydroxide mg/l 29800 Inorganics, Major, Non-metals Hydroxide, water, filtered, Gran titration, field, milligrams per liter USGS use and no use by EPA Dissolved 14280-30-9 Hydroxide mg/l 29801 Inorganics, Major, Non-metals Alkalinity, water, filtered, fixed endpoint (pH 4.5) titration, laboratory, milligrams per liter as calcium carbonate Agree Dissolved Alkalinity mg/l CaCO3 29802 Inorganics, Major, Non-metals Alkalinity, water, filtered, Gran titration, field, milligrams per liter as calcium carbonate Agree Dissolved Alkalinity mg/l CaCO3 29803 Inorganics, Major, Non-metals Alkalinity, water, filtered, Gran titration, laboratory, milligrams per liter as calcium carbonate Agree Dissolved Alkalinity mg/l CaCO3 29804 Inorganics, Major, Non-metals Bicarbonate, water, filtered, fixed endpoint (pH 4.5) titration, field, milligrams per liter Agree Dissolved 71-52-3 Bicarbonate mg/l 29805 Inorganics, Major, Non-metals Bicarbonate, water, filtered, fixed endpoint (pH 4.5) titration, laboratory, milligrams per liter Agree Dissolved 71-52-3 Bicarbonate mg/l 29806 Inorganics, Major, Non-metals Bicarbonate, water, filtered, inflection-point titration method (incremental titration method), laboratory, milligrams per liter Agree Dissolved 71-52-3 Bicarbonate mg/l 29807 Inorganics, Major, Non-metals Carbonate, water, filtered, fixed endpoint (pH 8.3) titration, field, milligrams per liter Not agree Dissolved 3812-32-6 Carbonate (CO3) mg/l 29808 Inorganics, Major, Non-metals Carbonate, water, filtered, fixed endpoint (pH 8.3) titration, laboratory, milligrams per liter Not agree Dissolved 3812-32-6 Carbonate (CO3) mg/l 29809 Inorganics, Major, Non-metals Carbonate, water, filtered, inflection-point titration method (incremental titration method), laboratory, milligrams per liter Not agree Dissolved 3812-32-6 Carbonate (CO3) mg/l 29810 Inorganics, Major, Non-metals Hydroxide, water, filtered, fixed endpoint (pH 10.4) titration, field, milligrams per liter Agree Dissolved 14280-30-9 Hydroxide mg/l 29811 Inorganics, Major, Non-metals Hydroxide, water, filtered, fixed endpoint (pH 10.4) titration, laboratory, milligrams per liter Agree Dissolved 14280-30-9 Hydroxide mg/l 29812 Inorganics, Major, Non-metals Hydroxide, water, filtered, inflection-point titration method (incremental titration method), laboratory, milligrams per liter Agree Dissolved 14280-30-9 Hydroxide mg/l 29813 Inorganics, Major, Non-metals Acid neutralizing capacity, water, unfiltered, Gran titration, field, milligrams per liter as calcium carbonate Agree Total Alkalinity mg/l CaCO3 29849 Inorganics, Major, Non-metals Silicon, soil, recoverable, dry weight, milligrams per kilogram Agree Dry Recoverable 7440-21-3 Silicon mg/kg 30241 Inorganics, Major, Non-metals Inorganic carbon, bed sediment, dry weight, percent Agree Dry Bed Sediment Inorganic carbon % 30242 Inorganics, Major, Non-metals Inorganic carbon, suspended sediment, total, dry weight, percent Agree Dry Suspended Inorganic carbon % 30244 Inorganics, Major, Non-metals Carbon [inorganic plus organic], suspended sediment, total, dry weight, percent Agree Dry Suspended 7440-44-0 Total Carbon % 30307 Inorganics, Major, Non-metals Sulfur, bed sediment, dry weight, percent Agree Dry Bed Sediment 7704-34-9 Sulfur % 30308 Inorganics, Major, Non-metals Sulfur, suspended sediment, total digestion, dry weight, percent Not checked Dry Suspended 7704-34-9 Sulfur % 30362 Inorganics, Major, Non-metals Chloride, bed sediment, recoverable, dry weight, milligrams per kilogram Not checked Dry Bed Sediment 16887-00-6 mg/kg 30363 Inorganics, Major, Non-metals Fluoride, bed sediment, recoverable, dry weight, milligrams per kilogram Not checked Dry Bed Sediment 16984-48-8 mg/kg 30364 Inorganics, Major, Non-metals Sulfate, bed sediment, recoverable, dry weight, milligrams per kilogram Not checked Dry Bed Sediment 14808-79-8 mg/kg 30372 Inorganics, Major, Non-metals Chloride, soil, recoverable, dry weight, milligrams per kilogram Not checked Dry Recoverable 16887-00-6 mg/kg 30373 Inorganics, Major, Non-metals Fluoride, soil, recoverable, dry weight, milligrams per kilogram Not checked Dry Recoverable 16984-48-8 mg/kg 30374 Inorganics, Major, Non-metals Sulfate, soil, recoverable, dry weight, milligrams per kilogram Not checked Dry Recoverable 14808-79-8 mg/kg 30375 Inorganics, Major, Non-metals Silica, soil, recoverable, dry weight, milligrams per kilogram Not checked Dry Recoverable 7631-86-9 mg/kg 30376 Inorganics, Major, Non-metals Sulfur, soil, recoverable, dry weight, milligrams per kilogram Not checked Dry Recoverable 7704-34-9 mg/kg 34970 Inorganics, Major, Non-metals Sulfur, bed sediment smaller than 62.5 microns, wet sieved, field, total digestion, dry weight, percent Not checked Dry < 62.5 microns Bed Sediment 7704-34-9 Sulfur % 34971 Inorganics, Major, Non-metals Sulfur, bed sediment smaller than 177 microns, wet sieved, field, total digestion, dry weight, milligrams per kilogram Not checked Dry < 177 microns Bed Sediment 7704-34-9 Sulfur mg/kg 34972 Inorganics, Major, Non-metals Sulfur, bed sediment smaller than 62.5 microns, dry sieved, laboratory, total digestion, dry weight, percent Not checked Dry < 62.5 microns Bed Sediment 7704-34-9 Sulfur % 34973 Inorganics, Major, Non-metals Sulfur, suspended sediment smaller than 62.5 microns, total digestion, dry weight, milligrams per kilogram Not checked Dry < 62.5 microns Suspended 7704-34-9 Sulfur mg/kg 34974 Inorganics, Major, Non-metals Sulfur, suspended sediment larger than 62.5 microns, total digestion, dry weight, milligrams per kilogram Not checked Dry > 62.5 microns Suspended 7704-34-9 Sulfur mg/kg 35041 Inorganics, Major, Non-metals Sulfur, suspended sediment, total digestion, dry weight, milligrams per kilogram Not checked Dry Suspended 7704-34-9 Sulfur mg/kg 35054 Inorganics, Major, Non-metals Carbon (inorganic plus organic), bed sediment smaller than 62.5 micrometers, dry sieved, laboratory, total, dry weight, percent USGS use and no use by EPA Dry < 62.5 microns Bed Sediment 7440-44-0 Total Carbon % 39036 Inorganics, Major, Non-metals Alkalinity, water, filtered, fixed endpoint (pH 4.5) titration, field, milligrams per liter as calcium carbonate Not checked Dissolved Alkalinity mg/l CaCO3 39086 Inorganics, Major, Non-metals Alkalinity, water, filtered, inflection-point titration method (incremental titration method), field, milligrams per liter as calcium carbonate Agree Dissolved Alkalinity mg/l CaCO3 39087 Inorganics, Major, Non-metals Alkalinity, water, filtered, inflection-point titration method (incremental titration method), laboratory, milligrams per liter as calcium carbonate Agree Dissolved Alkalinity mg/l CaCO3 46247 Inorganics, Major, Non-metals Carbon [inorganic plus organic], soil, total, dry weight, percent Agree Dry Total 7440-44-0 Total Carbon % 49267 Inorganics, Major, Non-metals Carbon [inorganic plus organic], bed sediment smaller than 62.5 microns, wet sieved (native water), field, recoverable, dry weight, percent Not agree Dry < 62.5 microns Bed Sediment 7440-44-0 Total Carbon % 49269 Inorganics, Major, Non-metals Inorganic carbon, bed sediment smaller than 62.5 microns, wet sieved (native water), field, recoverable, dry weight, percent Not agree Dry < 62.5 microns Bed Sediment Inorganic carbon % 49270 Inorganics, Major, Non-metals Inorganic carbon, bed sediment smaller than 2 millimeters, wet sieved (native water), field, recoverable, dry weight, grams per kilogram Not agree Dry < 2 mm Bed Sediment Inorganic carbon g/kg 49272 Inorganics, Major, Non-metals Carbon [inorganic plus organic], bed sediment smaller than 2 millimeters, wet sieved (native water), field, recoverable, dry weight, grams per kilogram Not agree Dry < 2 mm Bed Sediment 7440-44-0 Total Carbon g/kg 50060 Inorganics, Major, Non-metals Chlorine (total residual), water, unfiltered, milligrams per liter Agree Total Residual 7782-50-5 Chlorine mg/l 50064 Inorganics, Major, Non-metals Chlorine, free available, water, unfiltered, milligrams per liter Agree Free Available 7782-50-5 Chlorine mg/l 50066 Inorganics, Major, Non-metals Chlorine (combined available), water, unfiltered, milligrams per liter Agree Comb Available 7782-50-5 Chlorine mg/l 50932 Inorganics, Major, Non-metals Sulfur, water, filtered, milligrams per liter Not checked Dissolved 7704-34-9 mg/l 51128 Inorganics, Major, Non-metals Silicon, bed sediment, recoverable, dry weight, milligrams per kilogram Not checked Dry Bed Sediment 7440-21-3 Silicon mg/kg 51179 Inorganics, Major, Non-metals Sulfur, soil, field, x-ray fluorescence screening method, parts per million Not checked 7704-34-9 Sulfur ppm 51189 Inorganics, Major, Non-metals Hydrogen, water, dissolved, mole percent of dissolved gases Not checked Dissolved 1333-74-0 Hydrogen % 51191 Inorganics, Major, Non-metals Oxygen, water, dissolved, mole percent of dissolved gases Not checked Dissolved 7782-44-7 Oxygen % 51192 Inorganics, Major, Non-metals Carbon dioxide, water, dissolved, mole percent of dissolved gases Not checked Dissolved 124-38-9 Carbon dioxide % 51193 Inorganics, Major, Non-metals Dinitrogen, water, dissolved, mole percent of dissolved gases Not checked Dissolved 7727-37-9 Nitrogen % 51194 Inorganics, Major, Non-metals Carbon monoxide, water, dissolved, mole percent of dissolved gases Not checked Dissolved 630-08-0 Carbon monoxide % 51364 Inorganics, Major, Non-metals Inorganic carbon, bed sediment smaller than 150 um, dry sieved, lab, total digestion, dry weight, percent Not checked Dry <150 um Bed Sediment Inorganic carbon % 51366 Inorganics, Major, Non-metals Carbon [inorganic plus organic], bed sediment smaller than 150 um, dry sieved, lab, total digestion, dry weight, percent Not checked Dry <150 um Bed Sediment 7440-44-0 % 51393 Inorganics, Major, Non-metals Sulfur, bed sediment smaller than 150 um, dry sieved, lab, total digestion, dry weight, percent Not checked Dry <150 um Bed Sediment 7704-34-9 % 52666 Inorganics, Major, Non-metals Inorganic carbon in bed sediment, dry weight, milligrams per kilogram Not checked Dry Bed Sediment mg/kg 52682 Inorganics, Major, Non-metals Sulfate, water, filtered, micromoles per liter Not checked Dissolved 14808-79-8 umol/L 52683 Inorganics, Major, Non-metals Chloride, water, filtered, millimoles per liter Not checked Dissolved 16887-00-6 mmol/L 53029 Inorganics, Major, Non-metals Sulfur, water, unfiltered, micrograms per liter Not checked Total 7704-34-9 ug/l 53514 Inorganics, Major, Non-metals Silicon, water, unfiltered, milligrams per liter Not checked Recoverable 7440-21-3 mg/l 53644 Inorganics, Major, Non-metals Carbon [inorganic plus organic], bed sediment smaller than 2 millimeters, wet sieved (native water), total digestion, dry weight, percent Not checked Dry < 2 mm Bed Sediment 7440-44-0 % 53953 Inorganics, Major, Non-metals Bromide, water, unfiltered, micrograms per liter Not checked 24959-67-9 ug/l 53981 Inorganics, Major, Non-metals Dinitrogen error, water, dissolved, cubic centimeters per gram at standard temperature and pressure Not checked Dissolved 7727-37-9 cm3/g STP 54152 Inorganics, Major, Non-metals Oxygen, soil gas, in situ, sensor reading uncorrected for temperature and pressure, percent of soil gas Not checked 7782-44-7 % by vol 54153 Inorganics, Major, Non-metals Carbon dioxide, soil gas, in situ, sensor reading uncorrected for temperature and pressure, percent of soil gas Not checked 124-38-9 % by vol 54154 Inorganics, Major, Non-metals Oxygen plus argon, soil gas, uncorrected for temperature and pressure, percent of soil gas Not checked % by vol 54155 Inorganics, Major, Non-metals Dinitrogen, soil gas, uncorrected for temperature and pressure, percent of soil gas Not checked 7727-37-9 % by vol 54157 Inorganics, Major, Non-metals Oxygen, soil gas, in situ, sensor reading corrected for temperature and pressure, percent of soil gas Not checked 7782-44-7 % by vol 54158 Inorganics, Major, Non-metals Carbon dioxide, soil gas, in situ, sensor reading corrected for temperature and pressure, percent of soil gas Not checked 124-38-9 % by vol 54159 Inorganics, Major, Non-metals Carbon dioxide efflux, soil gas, micromoles per square meter per second Not checked 124-38-9 umol/m2/s 54563 Inorganics, Major, Non-metals Hydrogen, air, recoverable, mole percent Not checked Recoverable 1333-74-0 % 54565 Inorganics, Major, Non-metals Oxygen, air, recoverable, mole percent Not checked Recoverable 7782-44-7 % 54566 Inorganics, Major, Non-metals Carbon dioxide, air, recoverable, mole percent Not checked Recoverable 124-38-9 % 54567 Inorganics, Major, Non-metals Dinitrogen, air, recoverable, mole percent Not checked Recoverable 7727-37-9 % 54568 Inorganics, Major, Non-metals Carbon monoxide, air, recoverable, mole percent Not checked Recoverable 630-08-0 % 54579 Inorganics, Major, Non-metals Hydrogen, air, recoverable, milligrams per liter Not checked Recoverable 1333-74-0 mg/l 54580 Inorganics, Major, Non-metals Oxygen + argon, air, recoverable, milligrams per liter Not checked Recoverable 7782-44-7 mg/l 54581 Inorganics, Major, Non-metals Carbon dioxide, air, recoverable, milligrams per liter Not checked Recoverable 124-38-9 mg/l 54582 Inorganics, Major, Non-metals Dinitrogen, air, recoverable, milligrams per liter Not checked Recoverable 7727-37-9 mg/l 54583 Inorganics, Major, Non-metals Carbon monoxide, air, recoverable, milligrams per liter Not checked Recoverable 630-08-0 mg/l 54825 Inorganics, Major, Non-metals Carbon dioxide density, air, in situ, milligrams per cubic meters Not checked 124-38-9 mg/m3 54826 Inorganics, Major, Non-metals Coefficient of determination, carbon dioxide efflux, soil gas Not checked None 54827 Inorganics, Major, Non-metals Coefficient of variation, carbon dioxide efflux, soil gas Not checked None 54828 Inorganics, Major, Non-metals Carbon dioxide, air, dry, recoverable, mole percent Not checked Recoverable 124-38-9 % 54829 Inorganics, Major, Non-metals Carbon dioxide, air, recoverable, percent by volume Not checked Recoverable 124-38-9 % by vol 54830 Inorganics, Major, Non-metals Oxygen, air, recoverable, percent by volume Not checked Recoverable 7782-44-7 Oxygen % by vol 61034 Inorganics, Major, Non-metals Carbon [inorganic plus organic], bed sediment smaller than 2 millimeters, total, dry weight, percent Agree Dry < 2 mm Bed Sediment 7440-44-0 Total Carbon % 61049 Inorganics, Major, Non-metals Sulfur, bed sediment smaller than 2 millimeters, total digestion, dry weight, percent Not checked Dry < 2 mm Bed Sediment 7704-34-9 Sulfur % 61713 Inorganics, Major, Non-metals Inorganic carbon, bed sediment smaller than 2 millimeters, wet sieved (native water), total digestion, dry weight, percent Agree Dry < 2 mm Bed Sediment Inorganic carbon % 62460 Inorganics, Major, Non-metals Silica, bed sediment, dry weight, milligrams per kilogram USGS use and no use by EPA Dry Bed Sediment 7631-86-9 Silica mg/kg 62462 Inorganics, Major, Non-metals Inorganic carbon, bed sediment, dry weight, percent USGS use and no use by EPA Dry Bed Sediment Inorganic carbon % by wt 62463 Inorganics, Major, Non-metals Carbon [inorganic plus organic], bed sediment, dry weight, percent USGS use and no use by EPA Dry Bed Sediment 7440-44-0 Total Carbon % by wt 62944 Inorganics, Major, Non-metals Inorganic carbon, solids, dry weight, percent USGS use and no use by EPA Dry Inorganic carbon % 62946 Inorganics, Major, Non-metals Carbon [inorganic plus organic], solids, dry weight, percent USGS use and no use by EPA Dry 7440-44-0 Total Carbon % 62951 Inorganics, Major, Non-metals Chloride, solids, dry weight, milligrams per kilogram USGS use and no use by EPA Dry 16887-00-6 Chloride mg/kg 62952 Inorganics, Major, Non-metals Sulfate, solids, dry weight, milligrams per kilogram USGS use and no use by EPA Dry 14808-79-8 Sulfate mg/kg 62971 Inorganics, Major, Non-metals Dissolved oxygen, water, unfiltered, lab, milligrams per liter USGS use and no use by EPA Dissolved 7782-44-7 Dissolved oxygen (DO) mg/l 62981 Inorganics, Major, Non-metals Silica, water, filtered (ultrafiltration, 10,000 Dalton molecular weight membrane), milligrams per liter USGS use and no use by EPA Dissolved 7631-86-9 Silica mg/l 63039 Inorganics, Major, Non-metals Carbon (total), solids, dry weight, milligrams per kilogram USGS use and no use by EPA Dry Total 7440-44-0 Carbon mg/kg 63153 Inorganics, Major, Non-metals Sulfide, solids, dry weight, milligrams per kilogram USGS use and no use by EPA Dry 18496-25-8 Sulfide mg/kg 63689 Inorganics, Major, Non-metals Bromide, water, unfiltered, milligrams per liter USGS use and no use by EPA Total 24959-67-9 Bromide mg/l 63713 Inorganics, Major, Non-metals Bromide, solids, recoverable, dry weight, milligrams per kilogram USGS use and no use by EPA Dry Recoverable 24959-67-9 Bromide mg/kg 63714 Inorganics, Major, Non-metals Fluoride, solids, recoverable, dry weight, milligrams per kilogram USGS use and no use by EPA Dry Recoverable 16984-48-8 Fluoride mg/kg 63719 Inorganics, Major, Non-metals Sulfur, water, filtered, micrograms per liter USGS use and no use by EPA Dissolved 7704-34-9 Sulfur ug/l 63786 Inorganics, Major, Non-metals Bicarbonate, water, filtered, Gran titration, field, milligrams per liter USGS use and no use by EPA Dissolved 71-52-3 Bicarbonate mg/l 63787 Inorganics, Major, Non-metals Bicarbonate, water, filtered, Gran titration, lab, milligrams per liter USGS use and no use by EPA Dissolved 71-52-3 Bicarbonate mg/l 63788 Inorganics, Major, Non-metals Carbonate, water, filtered, Gran titration, field, milligrams per liter USGS use and no use by EPA Dissolved 3812-32-6 Carbonate (CO3) mg/l 63789 Inorganics, Major, Non-metals Carbonate, water, filtered, Gran titration, lab, milligrams per liter USGS use and no use by EPA Dissolved 3812-32-6 Carbonate (CO3) mg/l 64185 Inorganics, Major, Non-metals Hydrogen, water, unfiltered, nanomoles per liter USGS use and no use by EPA Total 1333-74-0 Hydrogen nmol/L 65238 Inorganics, Major, Non-metals Sulfur, bed sediment, total digestion, dry weight, milligrams per kilogram USGS use and no use by EPA Dry Bed Sediment 7704-34-9 Sulfur mg/kg 68799 Inorganics, Major, Non-metals Sulfide, bed sediment, recoverable, wet weight, micrograms per kilogram USGS use and no use by EPA Wet Bed Sediment 18496-25-8 ug/kg 68809 Inorganics, Major, Non-metals Silica, water, filtered, micrograms per liter as SiO2 USGS use and no use by EPA Dissolved 7631-86-9 ug/l 68928 Inorganics, Major, Non-metals Exchangeable acidity, soil, extracted with 1.0 M potassium chloride, recoverable, dry weight, milliequivalents per 100 grams USGS use and no use by EPA Dry meq/100 g 68930 Inorganics, Major, Non-metals Exchangeable hydrogen ion, soil, extracted with 1.0 M potassium chloride, recoverable, dry weight, milliequivalents per 100 grams USGS use and no use by EPA Dry meq/100 g 70287 Inorganics, Major, Non-metals Silicon, water, filtered, milligrams per liter Not checked Dissolved 7440-21-3 Silicon mg/l 70289 Inorganics, Major, Non-metals Chloride, water, dissolved, pounds per day Not checked Dissolved 16887-00-6 lb/day 70290 Inorganics, Major, Non-metals Chloride, water, dissolved, short tons per day Agree Dissolved 16887-00-6 Chloride tons/day 70291 Inorganics, Major, Non-metals Sulfate, water, dissolved, short tons per day Agree Dissolved 14808-79-8 Sulfate tons/day 70387 Inorganics, Major, Non-metals Chloride, water, unfiltered, computed by regression equation, milligrams per liter Not checked 16887-00-6 Chloride mg/l 70388 Inorganics, Major, Non-metals Chloride flux, water, unfiltered, computed by regression equation, kilograms per day Not checked 16887-00-6 Chloride kg/day 70389 Inorganics, Major, Non-metals Chloride flux, water, filtered, computed by regression equation, kilograms per day Not checked 16887-00-6 Chloride kg/day 70390 Inorganics, Major, Non-metals Chloride flux, water, unfiltered, computed by regression equation, pounds per day Not checked 16887-00-6 Chloride lb/day 70391 Inorganics, Major, Non-metals Chloride flux, water, filtered, computed by regression equation, pounds per day Not checked 16887-00-6 Chloride lb/day 70392 Inorganics, Major, Non-metals Chloride yield, water, unfiltered, computed by regression equation, kilograms per day per square kilometer Not checked 16887-00-6 Chloride kg/day/km2 70393 Inorganics, Major, Non-metals Chloride yield, water, filtered, computed by regression equation, kilograms per day per square kilometer Not checked 16887-00-6 Chloride kg/day/km2 70394 Inorganics, Major, Non-metals Chloride yield, water, unfiltered, computed by regression equation, pounds per day per square mile Not checked 16887-00-6 Chloride lb/day/mi2 70395 Inorganics, Major, Non-metals Chloride yield, water, filtered, computed by regression equation, pounds per day per square mile Not checked 16887-00-6 Chloride lb/day/mi2 70504 Inorganics, Major, Non-metals Acidity, water, filtered, heated, milligrams per liter as calcium carbonate USGS use and no use by EPA Dissolved Heated mg/l CaCO3 70508 Inorganics, Major, Non-metals Acidity, water, unfiltered, heated, milligrams per liter as calcium carbonate Agree Total Heated Acidity mg/l CaCO3 71825 Inorganics, Major, Non-metals Acidity, water, unfiltered, heated, milligrams per liter as hydrogen ion Not checked Total Heated Acidity mg/l as H 71830 Inorganics, Major, Non-metals Hydroxide, water, unfiltered, fixed endpoint (pH 10.4) titration, field, milligrams per liter Not checked Total 14280-30-9 Hydroxide mg/l 71831 Inorganics, Major, Non-metals Hydroxide, water, unfiltered, inflection-point titration method (incremental titration method), laboratory, milligrams per liter Not checked Total 14280-30-9 Hydroxide mg/l 71832 Inorganics, Major, Non-metals Hydroxide, water, unfiltered, inflection-point titration method (incremental titration method), field, milligrams per liter Not checked Total 14280-30-9 Hydroxide mg/l 71833 Inorganics, Major, Non-metals Hydroxide, water, unfiltered, fixed endpoint (pH 10.4) titration, laboratory, milligrams per liter Not checked Total 14280-30-9 Hydroxide mg/l 71834 Inorganics, Major, Non-metals Hydroxide, water, filtered, inflection-point titration method (incremental titration method), field, milligrams per liter Agree Dissolved 14280-30-9 Hydroxide mg/l 71870 Inorganics, Major, Non-metals Bromide, water, filtered, milligrams per liter Not checked Dissolved 24959-67-9 Bromide mg/l 71875 Inorganics, Major, Non-metals Hydrogen sulfide, water, unfiltered, milligrams per liter Not checked Total 7783-06-4 Hydrogen sulfide mg/l 72210 Inorganics, Major, Non-metals Dissolved oxygen, water, unfiltered, mid-depth of water column, percent of saturation Not checked Total 7782-44-7 Dissolved oxygen saturation % saturatn 72240 Inorganics, Major, Non-metals Carbon dioxide, water, dissolved, at the water surface, parts per million by volume of dissolved gases Not checked Dissolved 124-38-9 ppmv 80107 Inorganics, Major, Non-metals Sulfur, water, unfiltered, milligrams per liter Agree Total 7704-34-9 Sulfur mg/l 81200 Inorganics, Major, Non-metals Silica, water, dissolved, short tons per day Not checked Dissolved 7631-86-9 Silica tons/day 81205 Inorganics, Major, Non-metals Bicarbonate, water, dissolved, short tons per day Not checked Dissolved 71-52-3 Bicarbonate tons/day 81612 Inorganics, Major, Non-metals Sulfate, bed sediment, dry weight, grams per kilogram Agree Dry Bed Sediment 14808-79-8 Sulfate g/kg 82042 Inorganics, Major, Non-metals Hydrogen, water, dissolved, micrograms per liter Agree Dissolved 1333-74-0 Hydrogen ug/l 82476 Inorganics, Major, Non-metals Chloride, soluble, dry atmospheric deposition, milligrams per kilogram Agree 16887-00-6 Chloride mg/kg 82477 Inorganics, Major, Non-metals Sulfate, soluble, dry atmospheric deposition, milligrams per kilogram Agree 14808-79-8 Sulfate mg/kg 82482 Inorganics, Major, Non-metals Inorganic carbon, total, dry atmospheric deposition, milligrams per kilogram Agree Total Inorganic carbon mg/kg 82907 Inorganics, Major, Non-metals Acid neutralizing capacity, wet atmospheric deposition, unfiltered, laboratory, microequivalents per liter Agree Total Alkalinity ueq/L 82944 Inorganics, Major, Non-metals Chloride, wet atmospheric deposition, filtered, milligrams per liter Agree Dissolved 16887-00-6 Chloride mg/l 82945 Inorganics, Major, Non-metals Chloride, wet atmospheric deposition, filtered, milligrams per square meter Agree Dissolved 16887-00-6 Chloride mg/m2 82975 Inorganics, Major, Non-metals Hydrogen ion, wet atmospheric deposition, filtered, milligrams per square meter Agree Dissolved 12408-02-5 Hydrogen ion mg/m2 82980 Inorganics, Major, Non-metals Hydrogen ion, wet atmospheric deposition, filtered, calculated, milligrams per liter Agree Dissolved 12408-02-5 Hydrogen ion mg/l 82981 Inorganics, Major, Non-metals Hydrogen ion, wet atmospheric deposition, filtered, calculated, milligrams per square meter Agree Dissolved 12408-02-5 Hydrogen ion mg/m2 82982 Inorganics, Major, Non-metals Hydrogen ion, wet atmospheric deposition, filtered, calculated, microequivalents per liter Agree Dissolved 12408-02-5 Hydrogen ion ueq/L 82983 Inorganics, Major, Non-metals Hydrogen ion, wet atmospheric deposition, unfiltered, calculated, milligrams per liter Agree Total 12408-02-5 Hydrogen ion mg/l 82984 Inorganics, Major, Non-metals Hydrogen ion, wet atmospheric deposition, unfiltered, calculated, milligrams per square meter Agree Total 12408-02-5 Hydrogen ion mg/m2 82985 Inorganics, Major, Non-metals Hydrogen ion, wet atmospheric deposition, unfiltered, calculated, microequivalents per liter Agree Total 12408-02-5 Hydrogen ion ueq/L 83160 Inorganics, Major, Non-metals Sulfate, wet atmospheric deposition, filtered, milligrams per liter Agree Dissolved 14808-79-8 Sulfate mg/l 83161 Inorganics, Major, Non-metals Sulfate, wet atmospheric deposition, filtered, milligrams per square meter Agree Dissolved 14808-79-8 Sulfate mg/m2 83226 Inorganics, Major, Non-metals Chloride, bulk atmospheric deposition, filtered, milligrams per liter Agree Dissolved 16887-00-6 Chloride mg/l 83262 Inorganics, Major, Non-metals Hydrogen ion, bulk atmospheric deposition, filtered, calculated, milligrams per liter Agree Dissolved 12408-02-5 Hydrogen ion mg/l 83263 Inorganics, Major, Non-metals Hydrogen ion, bulk atmospheric deposition, filtered, calculated, milligrams per square meter Agree Dissolved 12408-02-5 Hydrogen ion mg/m2 83264 Inorganics, Major, Non-metals Hydrogen ion, bulk atmospheric deposition, filtered, calculated, microequivalents per liter Agree Dissolved 12408-02-5 Hydrogen ion ueq/L 83265 Inorganics, Major, Non-metals Hydrogen ion, bulk atmospheric deposition, unfiltered, calculated, milligrams per liter Agree Total 12408-02-5 Hydrogen ion mg/l 83266 Inorganics, Major, Non-metals Hydrogen ion, bulk atmospheric deposition, unfiltered, calculated, milligrams per square meter Agree Total 12408-02-5 Hydrogen ion mg/m2 83267 Inorganics, Major, Non-metals Hydrogen ion, bulk atmospheric deposition, unfiltered, calculated, microequivalents per liter Agree Total 12408-02-5 Hydrogen ion ueq/L 83442 Inorganics, Major, Non-metals Sulfate, bulk atmospheric deposition, filtered, milligrams per liter Agree Dissolved 14808-79-8 Sulfate mg/l 83560 Inorganics, Major, Non-metals Carbon dioxide load, water, dissolved, milligrams per second Not checked Dissolved 124-38-9 mg/s 85544 Inorganics, Major, Non-metals Carbon dioxide, water, dissolved, volume percent of dissolved gases Agree Dissolved 124-38-9 Carbon dioxide % 85546 Inorganics, Major, Non-metals Hydrogen, water, dissolved, volume percent of dissolved gases Agree Dissolved 1333-74-0 Hydrogen % 85548 Inorganics, Major, Non-metals Nitrogen plus carbon monoxide, water, dissolved, volume percent of dissolved gases Agree Dissolved % 85550 Inorganics, Major, Non-metals Dissolved oxygen, water, dissolved, volume percent of dissolved gases Agree Dissolved 7782-44-7 Dissolved oxygen (DO) % 85570 Inorganics, Major, Non-metals Dinitrogen, water, dissolved, cubic centimeters per gram at standard temperature and pressure USGS use and no use by EPA Dissolved 7727-37-9 Nitrogen cm3/g @STP 85571 Inorganics, Major, Non-metals Carbon dioxide, water, unfiltered, cubic centimeters per gram at standard temperature and pressure USGS use and no use by EPA Total 124-38-9 Carbon dioxide cm3/g @STP 85573 Inorganics, Major, Non-metals Dissolved oxygen, water, dissolved, cubic centimeters per gram at standard temperature and pressure USGS use and no use by EPA Dissolved 7782-44-7 Dissolved oxygen (DO) cm3/g @STP 85576 Inorganics, Major, Non-metals Hydrogen, water, dissolved, nanomoles per kilogram Not checked Dissolved 1333-74-0 Hydrogen nmol/kg 85590 Inorganics, Major, Non-metals Carbon [inorganic plus organic], bed sediment, total, dry weight, milligrams per kilogram Not checked Dry Bed Sediment 7440-44-0 mg/kg 90300 Inorganics, Major, Non-metals Dissolved oxygen, water, unfiltered, area weighted average, milligrams per liter USGS use and no use by EPA Dissolved 7782-44-7 Dissolved oxygen (DO) mg/l 90410 Inorganics, Major, Non-metals Acid neutralizing capacity, water, unfiltered, fixed endpoint (pH 4.5) titration, laboratory, milligrams per liter as calcium carbonate USGS use and no use by EPA Total Alkalinity mg/l CaCO3 90430 Inorganics, Major, Non-metals Carbonate, water, unfiltered, inflection-point titration method (incremental titration method), laboratory, milligrams per liter as calcium carbonate USGS use and no use by EPA Total 3812-32-6 Carbonate (CO3) mg/l CaCO3 90440 Inorganics, Major, Non-metals Bicarbonate, water, unfiltered, inflection-point titration method (incremental titration method), laboratory, milligrams per liter USGS use and no use by EPA Total 71-52-3 Bicarbonate mg/l 90445 Inorganics, Major, Non-metals Carbonate, water, unfiltered, inflection-point titration method (incremental titration method), laboratory, milligrams per liter USGS use and no use by EPA Total 3812-32-6 Carbonate (CO3) mg/l 90830 Inorganics, Major, Non-metals Hydroxide, water, unfiltered, inflection-point titration method (incremental titration method), laboratory, milligrams per liter USGS use and no use by EPA Total 14280-30-9 Hydroxide mg/l 91000 Inorganics, Major, Non-metals Bromide, water, filtered, micrograms per liter USGS use and no use by EPA Dissolved 24959-67-9 Bromide ug/l 91001 Inorganics, Major, Non-metals Chloride, water, filtered, micrograms per liter USGS use and no use by EPA Dissolved 16887-00-6 Chloride ug/l 91002 Inorganics, Major, Non-metals Fluoride, water, filtered, micrograms per liter USGS use and no use by EPA Dissolved 16984-48-8 Fluoride ug/l 91005 Inorganics, Major, Non-metals Sulfate, water, filtered, micrograms per liter USGS use and no use by EPA Dissolved 14808-79-8 Sulfate ug/l 95410 Inorganics, Major, Non-metals Acid neutralizing capacity, water, unfiltered, fixed endpoint (pH 4.5) titration, laboratory, milligrams per liter as calcium carbonate USGS use and no use by EPA Total Alkalinity mg/l CaCO3 95430 Inorganics, Major, Non-metals Carbonate, water, unfiltered, fixed endpoint (pH 8.3) titration, laboratory, milligrams per liter as calcium carbonate USGS use and no use by EPA Total 3812-32-6 Carbonate (CO3) mg/l CaCO3 95440 Inorganics, Major, Non-metals Bicarbonate, water, unfiltered, fixed endpoint (pH 4.5) titration, laboratory, milligrams per liter USGS use and no use by EPA Total 71-52-3 Bicarbonate mg/l 95445 Inorganics, Major, Non-metals Carbonate, water, unfiltered, fixed endpoint (pH 8.3) titration, laboratory, milligrams per liter USGS use and no use by EPA Total 3812-32-6 Carbonate (CO3) mg/l 95830 Inorganics, Major, Non-metals Hydroxide, water, unfiltered, fixed endpoint (pH 10.4) titration, laboratory, milligrams per liter USGS use and no use by EPA Total 14280-30-9 Hydroxide mg/l 99113 Inorganics, Major, Non-metals Sulfate, water, filtered, field, milligrams per liter USGS use and no use by EPA Dissolved 14808-79-8 Sulfate mg/l 99117 Inorganics, Major, Non-metals Chloride, water, filtered, field, milligrams per liter USGS use and no use by EPA Dissolved 16887-00-6 Chloride mg/l 99118 Inorganics, Major, Non-metals Sulfide, water, filtered, field, milligrams per liter USGS use and no use by EPA Dissolved 18496-25-8 Sulfide mg/l 99119 Inorganics, Major, Non-metals Sulfide, water, unfiltered, field, milligrams per liter USGS use and no use by EPA Total 18496-25-8 Sulfide mg/l 99127 Inorganics, Major, Non-metals Sulfate, water, unfiltered, field, milligrams per liter USGS use and no use by EPA Total 14808-79-8 Sulfate mg/l 99131 Inorganics, Major, Non-metals Silica, water, unfiltered, field, milligrams per liter USGS use and no use by EPA Total 7631-86-9 Silica mg/l 99141 Inorganics, Major, Non-metals Carbon dioxide, water, dissolved, in situ, milligrams per liter Not checked Total 124-38-9 mg/l 99220 Inorganics, Major, Non-metals Chloride, water, unfiltered, milligrams per liter USGS use and no use by EPA Total 16887-00-6 Chloride mg/l 99301 Inorganics, Major, Non-metals Chlorine residual, disinfection byproduct, water, unfiltered, milligrams per liter USGS use and no use by EPA Total 7782-50-5 Chlorine mg/l 99302 Inorganics, Major, Non-metals Chlorine demand, disinfection byproduct, water, unfiltered, milligrams per liter USGS use and no use by EPA Total Chlorine demand mg/l 99400 Inorganics, Major, Non-metals Acid neutralizing capacity, water, unfiltered, estimated by regression equation, milligrams per liter as calcium carbonate USGS use and no use by EPA Total Alkalinity mg/l CaCO3 99404 Inorganics, Major, Non-metals Chloride, water, filtered, estimated by regression equation, milligrams per liter USGS use and no use by EPA Dissolved 16887-00-6 Chloride mg/l 99405 Inorganics, Major, Non-metals Sulfate, water, filtered, estimated by regression equation, milligrams per liter USGS use and no use by EPA Dissolved 14808-79-8 Sulfate mg/l 99417 Inorganics, Major, Non-metals Acid neutralizing capacity, water, unfiltered, pounds per day USGS use and no use by EPA Total Alkalinity lb/day 99430 Inorganics, Major, Non-metals Carbonate, water, unfiltered, inflection-point titration method (incremental titration method), field, milligrams per liter as calcium carbonate USGS use and no use by EPA Total 3812-32-6 Carbonate (CO3) mg/l CaCO3 99431 Inorganics, Major, Non-metals Alkalinity, water, filtered, Gran titration, field, microequivalents per liter USGS use and no use by EPA Dissolved Alkalinity ueq/L 99440 Inorganics, Major, Non-metals Bicarbonate, water, unfiltered, inflection-point titration method (incremental titration method), field, milligrams per liter USGS use and no use by EPA Total 71-52-3 Bicarbonate mg/l 99445 Inorganics, Major, Non-metals Carbonate, water, unfiltered, inflection-point titration method (incremental titration method), field, milligrams per liter USGS use and no use by EPA Total 3812-32-6 Carbonate (CO3) mg/l 99830 Inorganics, Major, Non-metals Hydroxide, water, unfiltered, inflection-point titration method (incremental titration method), field, milligrams per liter USGS use and no use by EPA Total 14280-30-9 Hydroxide mg/l 99890 Inorganics, Major, Non-metals Sulfate, water, filtered, uncorrected, milligrams per liter USGS use and no use by EPA Dissolved 14808-79-8 Sulfate mg/l 99985 Inorganics, Major, Non-metals Dissolved oxygen, water, unfiltered, mid-depth of water column, milligrams per liter USGS use and no use by EPA Dissolved 7782-44-7 Dissolved oxygen (DO) mg/l