MEDIM Medium codes and the descriptions are:
0 = Not determined
6 = Ground water (Water below the surface of the earth contained in the saturated zone. The code does not include soil moisture or interstitial water.)
9 = Surface water (Water on the surface of the earth stored or transported in rivers, streams, estuaries, lakes, ponds, swamps, glaciers or other aquatic areas. This code also may refer to water in urban drains and storm-sewer systems.)
SAMPL Sample record number
Database record number individual to site, date, and time of sample collection.
Station_Nm Station Name
The station name for ground-water sites is the same as the local number. The local number for ground-water sites includes the township and range followed by the section and a series of letters that designate the quarter-section subdivisions, from the largest to the smallest, followed by a site sequence number. The order of the quarter-section subdivisions differ from that used by the Bureau of Land Management and the public-land survey. The public-land survey uses a series of coordinate directions and a fraction to designate the quarter-section subdivisions listed from smallest to largest followed by the section, township, and range. For example, the same 10-acre plot would be described by using the public-land survey as NW1/4 SW1/4 NE1/4 Sec.5 T2S R3E and described by using the USGS Local_No as 02S-03E-05 ACB. A direct comparison between the quarter-section subdivisions for the public-land survey and the USGS Local_No is that A=NE, B=NW, C=SW, and D=SE.
Site_ID Site Identification Number
The Site ID for ground-water sites is a 15-digit identification number assigned to the site, and contains no blanks or alphabetic characters. Although the site-identification number is formed initially from the latitude and longitude of a point believed to represent the location of the site followed by a 2-digit sequence number, the Site ID is an identifier and not a locator. The first six digits of the Site ID are the value of latitude, the 7th through 13th digits are the value of longitude, and the 14th and 15th digits are sequence numbers used to distinguish between sites at the same location.
STYPE Sample type codes and the descriptions are:
A = Not determined
B = Other QA
H = Composite
1 = Spike
2 = Blank
3 = Reference
4 = Blind
5 = Duplicate
6 = Reference Material
7 = Replicate
8 = Spike solution
9 = Regular
Each parameter code for the following parameter code attributes is preceded by a remark code for that parameter. Example: R00028 is the remark code field for P00028. Remark codes and the descriptions are:
< = Less than. (Actual value is known to be less than the value shown.)
= Greater than. (Actual value is known to be greater than the value shown.)
E = Estimated value. (Value is estimated.)
A = Average value. (Value is an average.)
V = Contamination. (Constituent was detected in both the environmental sample and the associated blanks.)
S = Most probable value.
Values listed for the following fields are reported to the nearest accuracy level of the measurement or analytical method:
P71820 Density, water, unfiltered, grams per milliliter at 20 degrees Celsius
P61028 Turbidity, water, unfiltered, field, nephelometric turbidity units
P39086 Alkalinity, water, filtered, inflection-point titration method (incremental titration method), field, milligrams per liter as calcium carbonate
P71834 Hydroxide, water, filtered, inflection-point titration method (incremental titration method), field, milligrams per liter
P71832 Hydroxide, water, unfiltered, inflection-point titration method (incremental titration method), field, milligrams per liter
P71870 Bromide, water, filtered, milligrams per liter
P71865 Iodide, water, filtered, milligrams per liter
P70301 Residue, water, filtered, sum of constituents, milligrams per liter
P70303 Residue, water, filtered, tons per acre-foot
P70302 Residue, water, dissolved, tons per day
P70300 Residue on evaporation, dried at 180 degrees Celsius, water, filtered, milligrams per liter
P71846 Ammonia, water, filtered, milligrams per liter as NH4
P71845 Ammonia, water, unfiltered, milligrams per liter as NH4
P71851 Nitrate, water, filtered, milligrams per liter
P71856 Nitrite, water, filtered, milligrams per liter
P70507 Orthophosphate, water, unfiltered, milligrams per liter as phosphorus
P62453 Arsenate (H2AsO4-), water, filtered, micrograms per liter as arsenic
P62452 Arsenite (H3AsO3), water, filtered, micrograms per liter as arsenic
P71871 Bromine, water, unfiltered, milligrams per liter
P71866 Iodine, water, unfiltered, milligrams per liter
P71890 Mercury, water, filtered, micrograms per liter
P71900 Mercury, water, unfiltered, recoverable, micrograms per liter
P39082 1,2-Dibromoethene, water, unfiltered, recoverable, micrograms per liter
P45617 1,2-Dichloroethene (cis & trans), water, unfiltered, recoverable, micrograms per liter
P39742 2,4,5-T, water, filtered, recoverable, micrograms per liter
P39740 2,4,5-T, water, unfiltered, recoverable, micrograms per liter
P39732 2,4-D, water, filtered, recoverable, micrograms per liter
P39730 2,4-D, water, unfiltered, recoverable, micrograms per liter
P49299 2-Methyl-4,6-dinitrophenol, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P49308 3-Hydroxy carbofuran, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P49260 Acetochlor, water, filtered, recoverable, micrograms per liter
P49315 Acifluorfen, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P46342 Alachlor, water, filtered, recoverable, micrograms per liter
P49313 Aldicarb sulfone, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P49314 Aldicarb sulfoxide, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P49312 Aldicarb, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P39330 Aldrin, water, unfiltered, recoverable, micrograms per liter
P39388 alpha-Endosulfan, water, unfiltered, recoverable, micrograms per liter
P39632 Atrazine, water, filtered, recoverable, micrograms per liter
P39630 Atrazine, water, unfiltered, recoverable, micrograms per liter
P39120 Benzidine, water, unfiltered, recoverable, micrograms per liter
P39100 Bis(2-ethylhexyl) phthalate, water, unfiltered, recoverable, micrograms per liter
P49311 Bromoxynil, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P49310 Carbaryl, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P39750 Carbaryl, water, unfiltered, recoverable, micrograms per liter
P49309 Carbofuran, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P39786 Carbophenothion, water, unfiltered, recoverable, micrograms per liter
P61188 Chloramben methyl ester, water, filtered, recoverable, micrograms per liter
P39350 Chlordane (technical), water, unfiltered, recoverable, micrograms per liter
P49306 Chlorothalonil, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P49305 Clopyralid, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P49304 Dacthal monoacid, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P39572 Diazinon, water, filtered, recoverable, micrograms per liter
P39570 Diazinon, water, unfiltered, recoverable, micrograms per liter
P49303 Dichlobenil, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P49302 Dichlorprop, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P39381 Dieldrin, water, filtered, recoverable, micrograms per liter
P39380 Dieldrin, water, unfiltered, recoverable, micrograms per liter
P62455 Dimethylarsinate ((CH3)2HAsO2), water, filtered, recoverable, micrograms per liter as arsenic
P39110 Di-n-butyl phthalate, water, unfiltered, recoverable, micrograms per liter
P49301 Dinoseb, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P49300 Diuron, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P39390 Endrin, water, unfiltered, recoverable, micrograms per liter
P39398 Ethion, water, unfiltered, recoverable, micrograms per liter
P49297 Fenuron, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P39420 Heptachlor epoxide, water, unfiltered, recoverable, micrograms per liter
P39410 Heptachlor, water, unfiltered, recoverable, micrograms per liter
P39700 Hexachlorobenzene, water, unfiltered, recoverable, micrograms per liter
P39341 Lindane, water, filtered, recoverable, micrograms per liter
P39340 Lindane, water, unfiltered, recoverable, micrograms per liter
P39532 Malathion, water, filtered, recoverable, micrograms per liter
P39530 Malathion, water, unfiltered, recoverable, micrograms per liter
P49296 Methomyl, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P39051 Methomyl, water, unfiltered, recoverable, micrograms per liter
P39600 Methyl parathion, water, unfiltered, recoverable, micrograms per liter
P39790 Methyl trithion, water, unfiltered, recoverable, micrograms per liter
P39415 Metolachlor, water, filtered, recoverable, micrograms per liter
P39755 Mirex, water, unfiltered, recoverable, micrograms per liter
P62454 Monomethylarsonate ((CH3)HAsO3-), water, filtered, recoverable, micrograms per liter as arsenic
P49294 Neburon, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P49293 Norflurazon, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P49292 Oryzalin, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P39360 p,p'-DDD, water, unfiltered, recoverable, micrograms per liter
P39365 p,p'-DDE, water, unfiltered, recoverable, micrograms per liter
P39370 p,p'-DDT, water, unfiltered, recoverable, micrograms per liter
P39480 p,p'-Methoxychlor, water, unfiltered, recoverable, micrograms per liter
P39542 Parathion, water, filtered, recoverable, micrograms per liter
P39540 Parathion, water, unfiltered, recoverable, micrograms per liter
P39516 PCBs, water, unfiltered, recoverable, micrograms per liter
P49291 Picloram, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P39720 Picloram, water, unfiltered, recoverable, micrograms per liter
P39250 Polychlorinated naphthalenes, water, unfiltered, recoverable, micrograms per liter
P39056 Prometon, water, unfiltered, recoverable, micrograms per liter
P39057 Prometryn, water, unfiltered, recoverable, micrograms per liter
P49236 Propham, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P39052 Propham, water, unfiltered, recoverable, micrograms per liter
P39762 Silvex, water, filtered, recoverable, micrograms per liter
P39760 Silvex, water, unfiltered, recoverable, micrograms per liter
P39055 Simazine, water, unfiltered, recoverable, micrograms per liter
P39054 Simetryn, water, unfiltered, recoverable, micrograms per liter
P39400 Toxaphene, water, unfiltered, recoverable, micrograms per liter
P39040 Tribuphos, water, unfiltered, recoverable, micrograms per liter
P49235 Triclopyr, water, filtered (0.7 micron glass fiber filter), recoverable, micrograms per liter
P39702 Hexachlorobutadiene, water, unfiltered, recoverable, micrograms per liter
P39180 Trichloroethene, water, unfiltered, recoverable, micrograms per liter
P39175 Vinyl chloride, water, unfiltered, recoverable, micrograms per liter
P49279 2-Fluorobiphenyl, surrogate, bed sediment smaller than 2 millimeters, wet sieved (native water), field, percent recovery
P49280 Nitrobenzene-d5, surrogate, bed sediment smaller than 2 millimeters, wet sieved (native water), field, percent recovery
P49278 p-Terphenyl-d14, surrogate, bed sediment smaller than 2 millimeters, wet sieved (native water), field, percent recovery
P49934 Carbon-14 counting error, water, filtered, percent modern
P49933 Carbon-14, water, filtered, percent modern
P71999 Sample purpose, codes and descriptions are:
blank = not coded
10 = ROUTINE
15 = NAWQA - NATIONAL WATER-QUALITY ASSESSMENT