Appendix A - Constituents for Detection Monitoring1
| Common name2 | CAS RN3 | Chemical abstracts service index name4 | Suggested methods5 | PQL (µg/L)6 |
Inorganics (15)
| Antimony | (Total) | Antimony | 6010 7040 7041 | 300 2000 30 |
| Arsenic | (Total) | Arsenic | 6010 7060 7061 | 500 10 20 |
| Barium | (Total) | Barium | 6010 7080 | 20 1000 |
| Beryllium | (Total) | Beryllium | 6010 7090 7091 | 3 50 2 |
| Cadmium | (Total) | Cadmium | 6010 7130 7131 | 40 50 1 |
| Chromium | (Total) | Chromium | 6010 7190 7191 | 70 500 10 |
| Cobalt | (Total) | Cobalt | 6010 7200 7201 | 70 500 10 |
| Copper | (Total) | Copper | 6010 7210 7211 | 60 200 10 |
| Lead | (Total) | Lead | 6010 7420 7421 | 400 1000 10 |
| Nickel | (Total) | Nickel | 6010 7520 | 150 400 |
| Selenium | (Total) | Selenium | 6010 7740 7741 | 750 20 20 |
| Silver | (Total) | Silver | 6010 7760 | 70 100 |
| Thallium | (Total) | Thallium | 6010 7840 7841 | 400 1000 10 |
| Vanadium | (Total) | Vanadium | 6010 7910 7911 | 80 2000 40 |
| Zinc | (Total) | Zinc | 6010 7950 7951 | 20 50 0.5 |
Volatiles (47)
| Acetone | 67-64-1 | 2-Propanone | 8260 | 100 |
| Acrylonitrile | 107-13-1 | 2-Propenenitrile | 8030 8260 | 5 200 |
| Benzene | 71-43-2 | Benzene | 8020 8021 8260 | 2 0.1 5 |
| Bromochloromethane; Chlorobromomethane | 74-97-5 | Methane, bromochloro- | 8021 8260 | 0.1 5 |
| Bromodichloromethane; Dibromochloromethane | 75-27-4 | Methane, bromodichloro- | 8010 8021 8260 | 1 0.2 5 |
| Bromoform; Tribromomethane | 75-25-2 | Methane, tribromo- | 8010 8021 8260 | 2 15 5 |
| Carbon disulfide | 75-15-0 | Carbon disulfide | 8260 | 100 |
| Carbon tetrachloride | 56-23-5 | Methane, tetrachloro- | 8010 8021 8260 | 1 0.1 10 |
| Chlorobenzene | 108-90-7 | Benzene, chloro- | 8010 8020 8021 8260 | 2 2 0.1 5 |
| Chloroethane; Ethyl chloride | 75-00-3 | Ethane, chloro- | 8010 8021 8060 | 5 1 10 |
| Chloroform; Trichloromethane | 67-66-3 | Methane, trichloro- | 8010 8021 8260 | 0.5 0.2 5 |
| Dibromochloromethane; Chlorodibromomethane | 124-48-1 | Methane, dibromochloro- | 8010 8021 8260 | 1 0.3 5 |
| 1,2-Dibromo-3-chloropropane; DBCP | 96-12-8 | Propane, 1,2-dibromo-3-chloro- | 8011 8021 8260 | 0.1 30 25 |
| 1,2-Dibromoethane; Ethylene dibromide; EDB | 106-93-4 | Ethane, 1,2-dibromo- | 8011 8021 | 0.1 10 |
| o-Dichlorobenzene | 95-50-1 | Benzene, 1,2-dichloro- | 8010 8020 8021 8120 8260 8270 | 2 5 0.5 10 5 10 |
| p-Dichlorobenzene; 1,4 Dichlorobenzene | 106-46-7 | Benzene, 1,4-dichloro- | 8010 | 2 |
| trans-1,4-Dichloro-2-butene | 110-57-6 | 2-Butene, 1,4-dichloro-, (E)- | 8260 | 100 |
| 1,1-Dichloroethane; Ethylidene chloride | 75-34-3 | Ethane, 1,1-dichloro- | 8010 8021 8260 | 1 0.5 5 |
| 1,2-Dichloroethane; Ethylene dichloride | 107-06-2 | Ethane, 1,1-dichloro- | 8010 8021 8260 | 0.5 0.3 5 |
| 1,1-Dichloroethylene; 1,1-Dichlorothene; Vinylidene chloride | 75-35-4 | Ethene, 1,1-dichloro- | 8010 8021 8260 | 1 0.5 5 |
| cis-1,2-Dichloroethylene; cis-1,2-Dichloroethene | 156-59-2 | Ethene, 1,2-dichloro-, (Z)- | 8021 8260 | 0.2 5 |
| trans-1,2-Dichloroethylene trans-1,2-Dichloroethene | 156-60-5 | Ethene, 1,2-dichloro-, (E)- | 8010 8021 8260 | 1 0.5 5 |
| 1,2-Dichloropropane; Propylene dichloride | 78-87-5 | Propane, 1,2-dichloro- | 8010 8021 8260 | 0.5 0.05 5 |
| cis-1,3-Dichloropropene | 10061-01-5 | 1-Propene, 1,3-dichloro-, (Z)- | 8010 8260 | 20 10 |
| trans-1,3-Dichloropropene | 10061-02-6 | 1-Propene, 1,3-dichloro-, (E)- | 8010 8260 | 5 5 |
| Ethylbenzene | 100-41-4 | Benzene, ethyl- | 8020 8221 8260 | 2 0.05 5 |
| 2-Hexanone; Methyl butyl ketone | 591-78-6 | 2-Hexanone | 8260 | 50 |
| Methyl bromide; Bromomethane | 74-83-9 | Methane, bromo- | 8010 8021 | 20 10 |
| Methyl chloride; Chloromethane | 74-87-3 | Methane, chloro- | 8010 8021 | 1 0.3 |
| Methylene bromide; Dibromomethane | 74-95-3 | Methane, dibromo- | 8010 8021 8260 | 15 20 10 |
| Methylene chloride; Dichloromethane | 75-09-2 | Methane, dichloro- | 8010 8021 8260 | 5 0.2 10 |
| Methyl ethyl ketone; MEK; 2-Butanone | 78-93-3 | 2-Butanone | 8015 8260 | 10 100 |
| Methyl iodide; Iodomethane | 74-88-4 | Methane, iodo- | 8010 8260 | 40 10 |
| 4-Methyl-2-pentanone; Methyl isobutyl ketone | 108-10-1 | 2-Pentanone, 4-methyl- | 8015 8260 | 5 100 |
| Styrene | 100-42-5 | Benzene, ethenyl- | 8020 8021 8260 | 1 0.1 10 |
| 1,1,1,2-Tetrachloroethane | 630-20-6 | Ethane, 1,1,1,2-tetrachloro- | 8010 8021 8260 | 5 0.05 5 |
| 1,1,2,2-Tetrachloroethane | 79-34-5 | Ethane, 1,1,2,2-tetrachloro- | 8010 8021 8260 | 0.5 0.1 5 |
| Tetrachloroethylene; Tetrachloroethene; Perchloroethylene | 127-18-4 | Ethene, tetrachloro- | 8010 8021 8260 | 0.5 0.5 5 |
| Toluene | 108-88-3 | Benzene, methyl- | 8020 8021 8260 | 2 0.1 5 |
| 1,1,1-Trichloroethane; Methylchloroform | 71-55-6 | Ethane, 1,1,1-trichloro- | 8010 8021 8260 | 0.3 0.3 5 |
| 1,1,2-Trichloroethane | 79-00-5 | Ethane, 1,1,2-trichloro- | 8010 8260 | 0.2 5 |
| Trichloroethylene; Trichloroethene | 79-01-6 | Ethene, trichloro- | 8010 8021 8260 | 1 0.2 5 |
| Trichlorofluoromethane; CFC-11 | 75-69-4 | Methane, trichlorofluoro- | 8010 8021 8260 | 10 0.3 5 |
| 1,2,3-Trichloropropane | 96-18-4 | Propane, 1,2,3-trichloro- | 8010 8021 8260 | 10 5 15 |
| Vinyl acetate | 108-05-4 | Acetic acid, ethenyl ester | 8260 | 50 |
| Vinyl chloride; Chloroethene | 75-01-4 | Ethene, chloro- | 8010 8021 8260 | 2 0.4 10 |
| Xylene (total) | See Note 11 | Benzene, dimethyl- | 8020 8021 8260 | 5 0.2 5 |
1The regulatory requirements pertain only to the list of substances; the right hand columns (Methods and PQL) are given for informational purposes only. See also footnotes 5 and 6.
2Common names are those widely used in government regulations, scientific publications, and commerce; synonyms exist for many chemicals.
3Chemical Abstracts Service registry number. Where "Total" is entered, all species in the groundwater that contain this element are included.
4CAS index names are those used in the 9th Collective Index.
5Suggested Methods refer to analytical procedure numbers used in EPA Report SW-846 "Test Methods for Evaluating Solid Waste", third edition, November 1986, as revised, December 1987. Analytical details can be found in SW-846 and in documentation on file at the department. CAUTION: The methods listed are representative SW-846 procedures and may not always be the most suitable method(s) for monitoring an analyte under the regulations.
6Practical Quantitation Limits (PQLs) are the lowest concentrations of analytes in groundwaters that can be reliably determined within specified limits of precision and accuracy by the indicated methods under routine laboratory operating conditions. The PQLs listed are generally stated to one significant figure. PQLs are based on 5 mL samples for volatile organics and 1 L samples for semivolatile organics. CAUTION: The PQL values in many cases are based only on a general estimate for the method and not on a determination for individual compounds; PQLs are not a part of the regulation.