24 Nitrogen, Nitrite, Method 8507, Hach Chemical Company, P.O. Box 389, Loveland, CO 80537. 25 Just prior to distillation, adjust the sulfuric-acid-preserved sample to pH 4 with 1 + 9 NaOH.

26 The approved method is that cited in Standard Methods for the Examination of Water and Wastewater, 14th Edition. The colorimetric reaction is conducted at a pH of 10.0±0.2. The approved methods are given on pp. 576-81 of the 14th Edition: Method 510A for distillation, Method 510B for the manual colorimetric procedure, or Method 510C for the manual spectrophotometric procedure.

27 R. F. Addison and R. G. Ackman, "Direct Determination of Elemental Phosphorus by Gas-Liquid Chromatography," Journal of Chromatography, vol. 47, No. 3, pp. 421-426, 1970.

28 Approved methods for the analysis of silver in industrial wastewaters at concentrations of 1 mg/L and above are inadequate where silver exists as an inorganic halide. Silver halides such as the bromide and chloride are relatively insoluble in reagents such as nitric acid but are readily soluble in an aqueous buffer of sodium thiosulfate and sodium hydroxide to a pH of 12. Therefore, for levels of sliver above 1 mg/L, 20 mL of sample should be diluted to 100 mL by adding 40 mL each of 2 M Na S2O, and 2M NaOH. Standards should be prepared in the same manner. For levels of silver below 1 mg/L the approved method is satisfactory.

29 The approved method is that cited in Standard Methods for the Examination of Water and Wastewater, 15th Edition. 30 The approved method is that cited in Standard Methods for the Examination of Water and Wastewater, 13th Edition. 31 Stevens, H. H., Ficke, J. F., and Smoot, G. F., "Water Temperature-Influential Factors, Field Measurement and Data Presentation," U.S. Geological Survey, Techniques of Water Resources Investigations, Book 1, Chapter D1, 1975.

32 Zinc, Zincon Method, Method 8009, Hach Handbook of Water Analysis, 1979, pages 2-231 and 2-333, Hach Chemical Company, Loveland, CO 80537.

33 "Direct Current Plasma (DCP) Optical Emission Spectrometric Method for Trace Elemental Analysis of Water and Wastes, Method AES0029," 1986. Beckman Instruments, Inc., Campus Drive at Jamboree Boulevard, Irvine, CA 97213.

TABLE IC-LIST OF APPROVED TEST PROCEDURES FOR NON-PESTICIDE ORGANIC COMPOUNDS

TABLE IC-LIST OF APPROVED Test PROCEDURES FOR NON-PESTICIDE ORGANIC COMPOUNDS

1All parameters are expressed in micrograms per liter (μg/L).

2 The full text of Methods 601-613, 624, 625, 1624, and 1625, are given at Appendix A, "Test Procedures for Analysis of Organic Pollutants," of this Part 136. The standardized test procedure to be used to determine the method detection limit (MDL) for these test procedures is given at Appendix B, "Definition and Procedure for the Determination of the Method Detection Limit," of this Part 136.

"Methods for Benzidine; Chlorinated Organic Compounds, Pentachlorophenol and Pesticides in Water and Wastewater," U.S. Environmental Protection Agency, September, 1978.

*Method 624 may be extended to screen samples for Acrolein and Acrylonitrile. However, when they are known to be present, the preferred method for these two compounds is Method 603 or Method 1624.

602

624, 1624

612

625, 1625

Note 3, p. 130,

601

624, 1624

601

624, 1624

Note 3, p. 130,

601

624, 1624

601

624

604

625, 1625

601

624, 1624

*Method 625 may be extended to include benzidine, hexachlorocyclopentadiene, N-nitrosodiumethyamine, and N-nitrosodiphenylamine. However, when they are known to be present, Methods 605, 607, and 612, or Method 1625, are preferred methods for these compounds.

625, Screening only.

"Selected Analytical Methods Approved and Cited by the United States Environmental Protection Agency," Supplement to the Fifteenth Edition of Standard Methods for the Examination of Water and Wastewater (1981).

"Each analyst must make an initial, one-time, demonstration of their ability to generate acceptable precision and accuracy with Methods 601-613, 624, 625, 1624, and 1625 (See Appendix A of this Part 136) in accordance with procedures each in section 8.2 of each of these Methods. Additionally, each laboratory, on an on-going bases must spike and analyze 10% (5% for Methods 624 and 625 and 100% for methods 1624, and 1625) of all samples to monitor and evaluate laboratory data quality in accordance with sections 8.3 and 8.4 of these Methods. When the recovery of any parameter falls outside the warning limits, the analytical results for that parameter in the unspiked sample are suspect and cannot be reported to demonstrate regulatory compliance.

NOTE: These warning limits are promulgated as an "interim final action with a request for comments."

1

TABLE ID-LIST OF APPROVED TEST PROCEDURES FOR PESTICIDES 1

TABLE ID-LIST OF APPROVED TEST PROCEDURES FOR PESTICIDES 1-Continued

509A

509A

D3086 Note 3, p. 7; Note 4, p. 30; Note 6, p. S73.

Note 4, p. 30; Note 6, p. S73.
Note 3, p. 104; Note 6, p. S64.
Note 3, p. 25; Note 4, p. 30,

Note 6, p. S51.

Note 3, p. 94; Note 6, p. S60. 509A D3086 Note 3, p. 7; Note 4, p. 30. Note 3, p. 94; Note 6, p. S60. Note 3, p. 7.

Note 3, p. 104; Note 6, p. 964.

Note 3, p. 104; Note 6, p. S64.
Note 3, p. 104; Note 6, p. S64.
Note 4, p. 30.

Note 3, p. 25;

Note 3, p. 25.

Note 3, p. 83; Note 6, p. S68.
Note 3, p. 104; Note 6, p. S64.
Note 3, p. 83; Note 6, p. S68.
Note 3, p. 7.

Note 3, p. 104; Note 6, p. S64.
Note 3, p. 115; Note 4, p. 35.
Note 3, p. 115.

Note 3, p. 83; Note 6, p. S68.
D3086 Note 3, p. 7; Note 4, p. 30.

509A

Note 3, p. 7

Table ID Notes

1 Pesticides are listed in this table by common name for the convenience of the reader. Additional pesticides may be found under Table IC, where entries are listed by chemical name.

2 The full text of methods 608 and 625 are given at Appendix A, "Test Procedures for Analysis of Organic Pollutants," of this Part 136. The standardized test procedure to be used to determine the method detection limit (MDL) for these test procedures is given at Appendix B, "Definition and Procedure for the Determination of the Method Detection Limit", of this Part

136.

3 "Methods for Benzidine, Chlorinated Organic Compounds, Pentachlorophenol and Pesticides in Water and Wastewater." U.S. Environmental Protection Agency, September, 1978. This EPA publication includes thin-layer chromatography (TLC)

methods.

4 "Methods for Analysis of Organic Substances in Water," U.S. Geological Survey, Techniques of Water-Resources Investigations, Book 5, Chapter A3 (1972).

5 The method may be extended to include a-BHC, 8-BHC, endosulfan I, endosulfan II, and endrin. However, when they are known to exist, Method 608 is the preferred method.

"Selected Analytical Methods Approved and Cited by the United States Environmental Protection Agency," Supplement to the Fifteenth Edition of Standard Methods for the Examination of Water and Wastewater (1981).

7 Each analyst must make an initial, one-time, demonstration of their ability to generate acceptable precision and accuracy with Methods 608 and 625 (See Appendix A of this Part 136) in accordance with procedures given in section 8.2 of each of these methods. Additionally, each laboratory, on an on-going basis, must spike and analyze 10% of all samples analyzed with Method 608 or 5% of all samples analyzed with Method 625 to monitor and evaluate laboratory data quality in accordance with Sections 8.3 and 8.4 of these methods. When the recovery of any parameter falls outside the warning limits, the analytical results for that parameter in the unspiked sample are suspect and cannot be reported to demonstrate regulatory compliance. NOTE: These warning limits are promulgated as an "interim final action with a request for comments."

"Prescribed Procedures for Measurement of Radioactivity in Drinking Water," EPA-600/4-80-032 (1980 update), U.S. Environmental Protection Agency, August 1980. Fishman, M.J. and Brown, Eugene, "Selected Methods of the U.S. Geological Survey of Analysis of Wastewaters," U.S. Geological Survey, Open-File Report 76-177 (1976). The method found on p. 75 measures only the dissolved portion while the method on p. 78 measures only the suspended portion. Therefore, the two results must be added to obtain the "total."