Explanation of NAWQA Ground-Water Sampling Schedules

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Ground-water quality constituents sampled during the ALMN Project

Table of Contents
Ground water levels
Field constituents
Major ions and trace metals
Nutrients
Dissolved pesticides
Volatile organic compounds (VOC's)
Radon
Trace elements (dissolved)
Dissolved organic carbon (DOC)
Chlorofluorocarbons (CFC's)
Abbreviations and Codes:
uS/cm - microsemens per centimeter
deg. C - degree Celsius
dis. - dissolved
mmHg - millimeters mercury
µg/L - milligrams per liter
ug/L - micrograms per liter
ug/g - micrograms per gram
% - percent
mm - millimeters
pci/L - picocurries per liter
pg/Kg - picograms per kilogram
(Schedule 2701) - schedule code (for the UGSG National Water Quality Laboratory (NWQL))
(00925) - parameter (Watstore) code (unique to each constituent)


Ground-water levels
(72019) Water level (feet, depth below land surface)
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Field constituents
(00095) Specific conductance (uS/cm)
(00400) pH (pH standard units)
(00010) Temperature (deg. C)
(00025) Barometric pressure (mmHg)
(00300) Dissolved oxygen (µg/L)
(39086) Alkalinity, total dissolved (µg/L as CaCO3)
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(Schedule 2750) Major ions and trace metals (dissolved)
(70300) Residue at 180 deg. C, (µg/L)
(00955) Silica (µg/L)
(00403) pH, laboratory (pH)
(01046) Iron (ug/L)
(90095) Specific conductance, laboratory (uS/cm)
(00930) Sodium (µg/L)
(00935) Potassium (µg/L)
(01056) Manganese (ug/L)
(00945) Sulfate (µg/L)
(00915) Calcium (µg/L)
(00940) Chloride (µg/L)
(00925) Magnesium (µg/L)
(00950) Fluoride (µg/L)
(71870) Bromide (µg/L)
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(Schedule 2752) Nutrients (dissolved)
(00613) Nitrogen as nitrite (µg/L)
(00631) Nitrogen as nitrite + nitrate (µg/L)
(00608) Nitrogen as Ammonia (µg/L)
(00623) Nitrogen as ammonia + organic nitrogen (µg/L)
(00666) Phosphorus (µg/L)
(00671) Phosphorus, phosphate, ortho (Orthophosphorus) (µg/L)
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(Schedule 2010) Dissolved (filtered) pesticides
(82660) 2,6-Diethylaniline (ug/L)
(49260) Acetochlor (ug/L)
(46342) Alachlor (ug/L)
(39632) Atrazine (ug/L)
(82686) Azinphos-methyl (ug/L)
(82673) Benfluralin (ug/L)
(04028) Butylate (ug/L)
(82680) Carbaryl (ug/L)
(82674) Carbofuran (ug/L)
(38933) Chlorpyrifos (ug/L)
(04041) Cyanazine (ug/L)
(82682) DCPA (Dacthal) (ug/L)
(04040) Deethylatrazine (ug/L)
(39572) Diazinon (ug/L)
(39381) Dieldrin (ug/L)
(82677) Disulfoton (ug/L)
(82668) EPTC (ug/L)
(82663) Ethalfluralin (ug/L)
(82672) Ethoprophos (ug/L)
(04095) Fonofos (ug/L)
(39341) Lindane (ug/L)
(82666) Linuron (ug/L)
(39532) Malathion (ug/L)
(39415) Metolachlor (ug/L)
(82630) Metribuzin (Sencor) (ug/L)
(82671) Molinate (ug/L)
(82684) Napropamide (ug/L)
(39542) Parathion (ug/L)
(82667) Parathion-methyl (ug/L)
(82669) Pebulate (ug/L)
(82683) Pendimethalin (ug/L)
(82664) Phorate (ug/L)
(04037) Prometon (ug/L)
(04024) Propachlor (ug/L)
(82679) Propanil (ug/L)
(82685) Propargite (ug/L)
(82676) Propyzamide (Pronamide) (ug/L)
(04035) Simazine (ug/L)
(82670) Tebuthiuron (ug/L)
(82665) Terbacil (ug/L)
(82675) Terbufos (ug/L)
(82681) Thiobencarb (ug/L)
(82678) Tri-allate (ug/L)
(82661) Trifluralin (ug/L)
(34253) alpha-HCH (alpha-BHC) (ug/L)
(82687) cis-Permethrin (ug/L)
(34653) p,p'-DDE (ug/L)
(91063) Diazinon-d10 (surrogate) (pct)
(91064) Terbuthylazine (surrogate) (pct)
(91065) alpha-HCH-d6 (surrogate) (pct)
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(Schedule 2020) Volatile organic compounds (VOC's)
(77562) 1,1,1,2-Tetrachloroethane (ug/L)
(34506) 1,1,1-Trichloroethane (ug/L)
(34516) 1,1,2,2-Tetrachloroethane (ug/L)
(34511) 1,1,2-Trichloroethane (ug/L)
(77652) 1,1,2-Trichlorotrifluoroethane (ug/L)
(34496) 1,1-Dichloroethane (ug/L)
(34501) 1,1-Dichloroethylene (ug/L)
(77168) 1,1-Dichloropropene (ug/L)
(49999) 1,2,3,4-Tetramethylbenzene (ug/L)
(50000) 1,2,3,5-Tetramethylbenzene (ug/L)
(77613) 1,2,3-Trichlorobenzene (ug/L)
(77443) 1,2,3-Trichloropropane (ug/L)
(77221) 1,2,3-Trimethylbenzene (ug/L)
(34551) 1,2,4-Trichlorobenzene (ug/L)
(77222) 1,2,4-Trimethylbenzene (ug/L)
(82625) 1,2-Dibromo-3-chloropropane (ug/L)
(77651) 1,2-Dibromoethane (ug/L)
(34536) 1,2-Dichlorobenzene (ug/L)
(32103) 1,2-Dichloroethane (ug/L)
(34541) 1,2-Dichloropropane (ug/L)
(77226) 1,3,5-Trimethylbenzene (ug/L)
(34566) 1,3-Dichlorobenzene (ug/L)
(77173) 1,3-Dichloropropane (ug/L)
(34571) 1,4-Dichlorobenzene (ug/L)
(77170) 2,2-Dichloropropane (ug/L)
(81595) 2-Butanone (ug/L)
(77275) 2-Chlorotoluene (ug/L)
(77103) 2-Hexanone (ug/L)
(78109) 3-Chloropropene (ug/L)
(77277) 4-Chlorotoluene (ug/L)
(77356) 4-Isopropyl-1-methylbenzene (ug/L)
(78133) 4-Methyl-2-pentanone (ug/L)
(81552) Acetone (ug/L)
(34215) Acrylonitrile (ug/L)
(34030) Benzene (ug/L)
(81555) Bromobenzene (ug/L)
(77297) Bromochloromethane (ug/L)
(32101) Bromodichloromethane (ug/L)
(50002) Bromoethene (ug/L)
(32104) Bromoform (ug/L)
(34413) Bromomethane (ug/L)
(77342) Butylbenzene (ug/L)
(77041) Carbon disulfide (ug/L)
(34301) Chlorobenzene (ug/L)
(34311) Chloroethane (ug/L)
(32106) Chloroform (ug/L)
(34418) Chloromethane (ug/L)
(32105) Dibromochloromethane (ug/L)
(30217) Dibromomethane (ug/L)
(34668) Dichlorodifluoromethane (ug/L)
(34423) Dichloromethane (ug/L)
(81576) Diethyl ether (ug/L)
(81577) Diisopropyl ether (ug/L)
(73570) Ethyl methacrylate (ug/L)
(50004) Ethyl tert-butyl ether (ug/L)
(34371) Ethylbenzene (ug/L)
(39702) Hexachlorobutadiene (ug/L)
(34396) Hexachloroethane (ug/L)
(77223) Isopropylbenzene (ug/L)
(49991) Methyl acrylate (ug/L)
(81593) Methyl acrylonitrile (ug/L)
(77424) Methyl iodide (ug/L)
(81597) Methyl methacrylate (ug/L)
(34696) Naphthalene (ug/L)
(77128) Styrene (ug/L)
(34475) Tetrachloroethylene (ug/L)
(32102) Tetrachloromethane (ug/L)
(81607) Tetrahydrofuran (ug/L)
(34010) Toluene (ug/L)
(39180) Trichloroethylene (ug/L)
(34488) Trichlorofluoromethane (ug/L)
(39175) Vinyl chloride (ug/L)
(77093) cis-1,2-Dichloroethylene (ug/L)
(85795) m- and p-Xylene (ug/L)
(77224) n-Propylbenzene (ug/L)
(77220) o-Ethyl toluene (ug/L)
(77135) o-Xylene (ug/L)
(77350) sec-Butylbenzene (ug/L)
(78032) tert-Butyl methyl ether (ug/L)
(77353) tert-Butylbenzene (ug/L)
(50005) tert-Pentyl methyl ether (ug/L)
(34546) trans-1,2-Dichloroethylene (ug/L)
(34699) trans-1,3-Dichloropropene (ug/L)
(73547) trans-1,4-Dichloro-2-butene (ug/L)
(99832) 1,2-Dichloroethane-d4 (surrogate) (pct)
(99834) 1,4-Bromofluorobenzene (surrogate) (pct)
(99833) Toluene-d8 (surrogate) (pct)
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(Schedule 1369) Radon
(82303) Radon 222 (pci/L)
(76002) Radon 222 2-sigma (pci/L)
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(Schedule 2703) Trace elements (Major ions and trace metals) (dissolved)
(90095) specific conductance, laboratory (uS/cm)
(01056) Manganese ug/L)
(00403) pH, laboratory (pH)
(01000) Arsenic (ug/L)
(01060) Molybdenum (ug/L)
(01040) Copper (ug/L)
(01030) Chromium (ug/L)
(01090) Zinc (ug/L)
(01106) Aluminum (ug/L)
(01075) Silver (ug/L)
(01035) Cobalt (ug/L)
(01025) Cadmium (ug/L)
(01095) Antimony (ug/L)
(01005) Barium (ug/L)
(01049) Lead (ug/L)
(22703) Uranium, natural (ug/L)
(01145) Selenium (ug/L)
(01010) Beryllium (ug/L)
(01065) Nickel (ug/L)
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(Schedule 2085) Dissolved organic carbon (dissolved)
(00681) Dissolved Organic Carbon (µg/L)
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(No Schedule Number) Chlorofluorocarbons (CFC's)
Dichlorodifluoromethane (CCl2F2, or CFC-12), first produced in the 1930's (pg/Kg)
Trichlorofluoromethane (CCl3F, or CFC-11), first produced in the 1940's (pg/Kg)
Trichlorotrifluoroethane (C2Cl3F3, or CFC-13), first produced in the 1960's (pg/Kg)

Note: Chlorofluorocarbons are relatively stable volatile organic compounds that can be used for tracing and age dating young ground water. The ground water recharge date can be determined independently for CFC-11, CFC-12, and CFC-13 from the measured concentration in ground water by comparing the calculated air equilibrium concentration with the known atmospheric concentrations of the CFC's.

(For additional details, contact ALMN NAWQA Ground-water staff.)
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