carbonates, by any
                                         approved method
                                         for Ca and Mg (See
                                         Parameters 13 and
                                         33), provided that
                                         the sum of the
                                         lowest point of
                                         quantitation for
                                         Ca and Mg is below
                                         the NPDES permit
                                         requirement for
                                         Hardness.
28. Hydrogen ion (pH), pH units....  Electrometric           ......................  4500-H \+\ B-2011....  D1293-99 (A or B)....  973.41 \3\, I-1586-
                                      measurement.                                                                                85. \2\
                                        Automated electrode  150.2 (Dec. 1982) \1\.  .....................  .....................  See footnote \21\, I-
                                                                                2587-85. \2\
29. Iridium--Total, \4\ mg/L.......  Digestion \4\,
                                      followed by any of
                                      the following:
                                        AA direct            ......................  3111 B-2011..........
                                         aspiration.
                                        AA furnace.........  235.2 (Issued 1978)
                                                              \1\.
                                        ICP/MS.............  ......................  3125 B-2011..........
30. Iron--Total, \4\ mg/L..........  Digestion \4\,
                                      followed by any of
                                      the following:
                                        AA direct            ......................  3111 B-2011 or.......  D1068-10 (A).........  974.27 \3\, I-3381-
                                         aspiration \36\.                            3111 C-2011..........                          85. \2\
                                        AA furnace.........  ......................  3113 B-2010..........  D1068-10 (B).........
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES \36\.......  200.5, Rev. 4.2 (2003)  3120 B-2011..........  D1976-12.............  I-4471-97. \50\
                                                              \68\; 200.7, Rev. 4.4
                                                              (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125 B-2011..........  D5673-10.............  993.14. \3\
                                        DCP \36\...........  ......................  .....................  D4190-08.............  See footnote. \34\
                                        Colorimetric         ......................  3500-Fe-2011.........  D1068-10 (C).........  See footnote. \22\
                                         (Phenanthroline).
31. Kjeldahl Nitrogen \5\--Total,    Manual digestion \20\   ......................  4500-Norg B-2011 or C- D3590-11 (A).........  I-4515-91. \45\
 (as N), mg/L.                        and distillation or                             2011 and 4500-NH3 B-
                                      gas diffusion,                                  2011.
                                      followed by any of
                                      the following:
                                        Titration..........  ......................  4500-NH3 C-2011......  .....................  973.48. \3\
                                        Nesslerization.....  ......................  .....................  D1426-08 (A).........
                                        Electrode..........  ......................  4500-NH3 D-2011 or E-  D1426-08 (B).........
                                                                                2011.
                                        Semi-automated       350.1, Rev. 2.0 (1993)  4500-NH3 G-2011......
                                         phenate.                                    4500-NH3 H-2011......
                                        Manual phenate,      ......................  4500-NH3 F-2011......  .....................  See footnote. \60\
                                         salicylate, or
                                         other substituted
                                         phenols in
                                         Berthelot reaction
                                         based methods.
                                    --------------------------------------------------------------------------------------------------------------------
                                                              Automated Methods for TKN that do not require manual distillation.
                                    --------------------------------------------------------------------------------------------------------------------
                                        Automated phenate,   351.1 (Rev. 1978) \1\.  .....................  .....................  I-4551-78. \8\
                                         salicylate, or
                                         other substituted
                                         phenols in
                                         Berthelot reaction
                                         based methods
                                         colorimetric (auto
                                         digestion and
                                         distillation).

                                        Semi-automated       351.2, Rev. 2.0 (1993)  4500-Norg D-2011.....  D3590-11 (B).........  I-4515-91 \45\
                                         block digestor
                                         colorimetric
                                         (distillation not
                                         required).
                                        Block digester,      ......................  .....................  .....................  See footnote. \39\
                                         followed by Auto
                                         distillation and
                                         Titration.
                                        Block digester,      ......................  .....................  .....................  See footnote. \40\
                                         followed by Auto
                                         distillation and
                                         Nesslerization.
                                        Block Digester,      ......................  .....................  .....................  See footnote. \41\
                                         followed by Flow
                                         injection gas
                                         diffusion
                                         (distillation not
                                         required).
                                        Digestion with       ......................  .....................  .....................  Hach 10242. \75\
                                         peroxdisulfate,
                                         followed by
                                         Spectrophotometric
                                         (2,6-dimethyl
                                         phenol).
                                        Digestion with       ......................  .....................  .....................  NCASI TNTP W10900.
                                         persulfate,                                                                                \77\
                                         followed by
                                         Colorimetric.
32. Lead--Total, \4\ mg/L..........  Digestion \4\,
                                      followed by any of
                                      the following:
                                        AA direct            ......................  3111 B-2011 or 3111 C- D3559-08 (A or B)....  974.27 \3\, I-3399-
                                         aspiration \36\.                             2011..                                        85. \2\
                                        AA furnace.........  ......................  3113 B-2010..........  D3559-08 (D).........  I-4403-89. \51\
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES \36\.......  200.5, Rev. 4.2 (2003)  3120 B-2011..........  D1976-12.............  I-4471-97. \50\
                                                              \68\; 200.7, Rev. 4.4
                                                              (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125 B-2011..........  D5673-10.............  993.14 \3\, I-4471-
                                                                                97. \50\
                                        DCP \36\...........  ......................  .....................  D4190-08.............  See footnote. \34\
                                        Voltametry \11\....  ......................  .....................  D3559-08 (C).........
                                        Colorimetric         ......................  3500-Pb B-2011.......
                                         (Dithizone).
33. Magnesium--Total, \4\ mg/L.....  Digestion \4\,
                                      followed by any of
                                      the following:
                                        AA direct            ......................  3111 B-2011..........  D511-09 (B)..........  974.27 \3\, I-3447-
                                         aspiration.                                                                                85. \2\
                                        ICP/AES............  200.5, Rev. 4.2 (2003)  3120 B-2011..........  D1976-12.............  I-4471-97. \50\
                                                              \68\; 200.7, Rev. 4.4
                                                              (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125 B-2011..........  D5673-10.............  993.14. \3\
                                        DCP................  ......................  .....................  .....................  See footnote. \34\
                                        Ion Chromatography.  ......................  .....................  D6919-09.............
34. Manganese--Total, \4\ mg/L.....  Digestion \4\,
                                      followed by any of
                                      the following:
                                        AA direct            ......................  3111 B-2011..........  D858-12 (A or B).....  974.27 \3\, I-3454-
                                         aspiration \36\.                                                                           85. \2\
                                        AA furnace.........  ......................  3113 B-2010..........  D858-12 (C)..........
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES \36\.......  200.5, Rev. 4.2 (2003)  3120 B-2011..........  D1976-12.............  I-4471-97. \50\
                                                              \68\; 200.7, Rev. 4.4
                                                              (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125 B-2011..........  D5673-10.............  993.14 \3\, I-4471-
                                                                                97. \50\
                                        DCP \36\...........  ......................  .....................  D4190-08.............  See footnote. \34\

                                        Colorimetric         ......................  3500-Mn B-2011.......  .....................  920.203. \3\
                                         (Persulfate).
                                        Colorimetric         ......................  .....................  .....................  See footnote. \23\
                                         (Periodate).
35. Mercury--Total, \4\ mg/L.......  Cold vapor, Manual....  245.1, Rev. 3.0 (1994)  3112 B-2011..........  D3223-12.............  977.22 \3\, I-3462-
                                                                                85. \2\
                                        Cold vapor,          245.2 (Issued 1974)
                                         Automated.           \1\.
                                        Cold vapor atomic    245.7 Rev. 2.0 (2005)   .....................  .....................  I-4464-01. \71\
                                         fluorescence         \17\.
                                         spectrometry
                                         (CVAFS).
                                        Purge and Trap       1631E \43\............
                                         CVAFS.
36. Molybdenum--Total, \4\ mg/L....  Digestion \4\,
                                      followed by any of
                                      the following:
                                        AA direct            ......................  3111 D-2011..........  .....................  I-3490-85. \2\
                                         aspiration.
                                        AA furnace.........  ......................  3113 B-2010..........  .....................  I-3492-96. \47\
                                        ICP/AES \36\.......  200.7, Rev. 4.4 (1994)  3120 B-2011..........  D1976-12.............  I-4471-97. \50\
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125 B-2011..........  D5673-10.............  993.14 \3\, I-4471-
                                                                                97. \50\
                                        DCP................  ......................  .....................  .....................  See footnote. \34\
37. Nickel--Total, \4\ mg/L........  Digestion \4\,
                                      followed by any of
                                      the following:
                                        AA direct            ......................  3111 B-2011 or.......  D1886-08 (A or B)....  I-3499-85. \2\
                                         aspiration \36\.                            3111 C-2011..........
                                        AA furnace.........  ......................  3113 B-2010..........  D1886-08 (C).........  I-4503-89. \51\
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES \36\.......  200.5, Rev. 4.2 (2003)  3120 B-2011..........  D1976-12.............  I-4471-97. \50\
                                                              \68\; 200.7, Rev. 4.4
                                                              (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125 B-2011..........  D5673-10.............  993.14 \3\, I-4020-
                                                                                05. \70\
                                        DCP \36\...........  ......................  .....................  D4190-08.............  See footnote. \34\
38. Nitrate (as N), mg/L...........  Ion Chromatography....  300.0, Rev. 2.1 (1993)  4110 B-2011 or C-2011  D4327-03.............  993.30. \3\
                                                              and 300.1-1, Rev. 1.0
                                                              (1997).
                                        CIE/UV.............  ......................  4140 B-2011..........  D6508-10, D6508, Rev.
                                                                                2 \54\.
                                        Ion Selective        ......................  4500-NO3 - D-2011....
                                         Electrode.
                                        Colorimetric         352.1 (Issued 1971)     .....................  .....................  973.50 \3\, 419D
                                         (Brucine sulfate).   \1\.                                                                  \1,7\, p. 28. \9\
                                        Spectrophotometric   ......................  .....................  .....................  Hach 10206. \75\
                                         (2,6-dimethylpheno
                                         l).
                                        Nitrate-nitrite N    ......................  .....................  .....................  See footnote. \62\
                                         minus Nitrite N
                                         (See parameters 39
                                         and 40).
                                        Enzymatic            ......................  .....................  .....................  I-2547-11. \72\
                                         reduction,                                                                                I-2548-11. \72\
                                         followed by                                                                               N07-0003. \73\
                                         automated
                                         colorimetric
                                         determination.
39. Nitrate-nitrite (as N), mg/L...  Cadmium reduction,      ......................  4500-NO3 - E-2011....  D3867-04 (B).........
                                      Manual.
                                        Cadmium reduction,   353.2, Rev. 2.0 (1993)  4500-NO3 - F-2011....  D3867-04 (A).........  I-2545-90. \51\
                                         Automated.
                                        Automated hydrazine  ......................  4500-NO3 - H-2011....
                                        Reduction/           ......................  .....................  .....................  See footnote. \62\
                                         Colorimetric.
                                        Ion Chromatography.  300.0, Rev. 2.1 (1993)  4110 B-2011 or C-2011  D4327-03.............  993.30. \3\
                                                              and 300.1-1, Rev. 1.0
                                                              (1997).

                                        CIE/UV.............  ......................  4140 B-2011..........  D6508-10.............  D6508, Rev. 2. \54\
                                        Enzymatic            ......................  .....................  .....................  I-2547-11. \72\
                                         reduction,                                                                                I-2548-11. \72\
                                         followed by                                                                               N07-0003. \73\
                                         automated
                                         colorimetric
                                         determination.
                                        Spectrophotometric   ......................  .....................  .....................  Hach 10206. \75\
                                         (2,6-
                                         dimethylphenol).
40. Nitrite (as N), mg/L...........  Spectrophotometric:     ......................  4500-NO2 - B-2011....  .....................  See footnote. \25\
                                      Manual.
                                        Automated            ......................  .....................  .....................  I-4540-85 \2\, See
                                         (Diazotization).                                                                           footnote. \62\
                                        Automated (*bypass   353.2, Rev. 2.0 (1993)  4500-NO3 - F-2011....  D3867-04 (A).........  I-4545-85. \2\
                                         cadmium reduction).
                                        Manual (*bypass      ......................  4500-NO3 - E-2011....  D3867-04 (B).........
                                         cadmium reduction).
                                        Ion Chromatography.  300.0, Rev. 2.1 (1993)  4110 B-2011 or C-2011  D4327-03.............  993.30. \3\
                                                              and 300.1-1, Rev. 1.0
                                                              (1997).
                                        CIE/UV.............  ......................  4140 B-2011..........  D6508-10, D6508, Rev.
                                                                                2 \54\.
                                        Enzymatic            ......................  .....................  .....................  I-2547-11. \72\
                                         reduction,                                                                                I-2548-11. \72\
                                         followed by                                                                               N07-0003. \73\
                                         automated
                                         colorimetric
                                         determination.
41. Oil and grease--Total            Hexane extractable      1664 Rev. A; 1664 Rev.  5520 B-2011 \38\.....
 recoverable, mg/L.                   material (HEM): n-      B \42\.
                                      Hexane extraction and
                                      gravimetry.
                                        Silica gel treated   1664 Rev. A; 1664 Rev.  5520 B-2011 \38\ and
                                         HEM (SGT-HEM):       B \42\.                 5520 F-2011 \38\.
                                         Silica gel
                                         treatment and
                                         gravimetry.
42. Organic carbon--Total (TOC), mg/ Combustion............  ......................  5310 B-2011..........  D7573-09.............  973.47 \3\, p. 14.
 L.                                                                                \24\
                                        Heated persulfate    ......................  5310 C-2011..........  D4839-03.............  973.47 \3,\, p. 14.
                                         or UV persulfate                            5310 D-2011..........                          \24\
                                         oxidation.
43. Organic nitrogen (as N), mg/L..  Total Kjeldahl N
                                      (Parameter 31) minus
                                      ammonia N (Parameter
                                      4).
44. Ortho-phosphate (as P), mg/L...  Ascorbic acid method:
                                        Automated..........  365.1, Rev. 2.0 (1993)  4500-P F-2011 or G-    .....................  973.56 \3\, I-4601-
                                                                                2011.                                         85. \2\
                                        Manual single        ......................  4500-P E-2011........  D515-88 (A)..........  973.55. \3\
                                         reagent.
                                        Manual two reagent.  365.3 (Issued 1978)\1\
                                        Ion Chromatography.  300.0, Rev. 2.1 (1993)  4110 B-2011 or C-2000  D4327-03.............  993.30. \3\
                                                              and 300.1-1, Rev. 1.0
                                                              (1997).
                                        CIE/UV.............  ......................  4140 B-2011..........  D6508-10, D6508, Rev.
                                                                                2 \54\.
45. Osmium--Total \4\, mg/L........  Digestion \4\,
                                      followed by any of
                                      the following:
                                        AA direct            ......................  3111 D-2011..........
                                         aspiration.
                                        AA furnace.........  252.2 (Issued 1978)
                                                              \1\.
46. Oxygen, dissolved, mg/L........  Winkler (Azide          ......................  4500-O (B-F)-2011....  D888-09 (A)..........  973.45B \3\, I-1575-
                                      modification).                                                                                78. \8\
                                        Electrode..........  ......................  4500-O G-2011........  D888-09 (B)..........  I-1576-78. \8\

                                        Luminescence Based   ......................  .....................  D888-09 (C)..........  See footnote. \63\
                                         Sensor.                                                                                See footnote. \64\
47. Palladium--Total, \4\ mg/L.....  Digestion \4\,
                                      followed by any of
                                      the following:
                                        AA direct            ......................  3111 B-2011..........
                                         aspiration.
                                        AA furnace.........  253.2 (Issued 1978)
                                                              \1\.
                                        ICP/MS.............  ......................  3125 B-2011..........
                                        DCP................  ......................  .....................  .....................  See footnote. \34\
48. Phenols, mg/L..................  Manual distillation     420.1 (Rev. 1978) \1\.  5530 B-2010..........  D1783-01.............
                                      \26\, followed by any
                                      of the following:
                                        Colorimetric (4AAP)  420.1 (Rev. 1978) \1\.  5530 D-2010 \27\.....  D1783-01 (A or B)....
                                         manual.
                                        Automated            420.4 Rev. 1.0 (1993).
                                         colorimetric
                                         (4AAP).
49. Phosphorus (elemental), mg/L...  Gas-liquid              ......................  .....................  .....................  See footnote. \28\
                                      chromatography.
50. Phosphorus--Total, mg/L........  Digestion \20\,         ......................  4500-P B(5)-2011.....  .....................  973.55. \3\
                                      followed by any of
                                      the following:
                                        Manual.............  365.3 (Issued 1978)     4500-P E-2011........  D515-88 (A)..........
                                                              \1\.
                                        Automated ascorbic   365.1 Rev. 2.0 (1993).  4500-P (F-H)-2011....  .....................  973.56 \3\, I-4600-
                                         acid reduction.                                                                            85. \2\
                                        ICP/AES \4, 36\....  200.7, Rev. 4.4 (1994)  3120 B-2011..........  .....................  I-4471-97. \50\
                                        Semi-automated       365.4 (Issued 1974)     .....................  D515-88 (B)..........  I-4610-91. \48\
                                         block digestor       \1\.
                                         (TKP digestion).
                                        Digestion with       ......................  .....................  .....................  NCASI TNTP W10900.
                                         persulfate,                                                                                \77\
                                         followed by
                                         Colorimetric.
51. Platinum--Total, \4\ mg/L......  Digestion \4\,
                                      followed by any of
                                      the following:
                                        AA direct            ......................  3111 B-2011..........
                                         aspiration.
                                        AA furnace.........  255.2 (Issued 1978)
                                                              \1\.
                                        ICP/MS.............  ......................  3125 B-2011..........
                                        DCP................  ......................  .....................  .....................  See footnote. \34\
52. Potassium--Total, \4\ mg/L.....  Digestion \4\,
                                      followed by any of
                                      the following:
                                        AA direct            ......................  3111 B-2011..........  .....................  973.53 \3\, I-3630-
                                         aspiration.                                                                                85. \2\
                                        ICP/AES............  200.7, Rev. 4.4 (1994)  3120 B-2011..........
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125 B-2011..........  D5673-10.............  993.14. \3\
                                        Flame photometric..  ......................  3500-K B-2011........
                                        Electrode..........  ......................  3500-K C-2011........
                                        Ion Chromatography.  ......................  .....................  D6919-09.............
53. Residue--Total, mg/L...........  Gravimetric, 103-       ......................  2540 B-2011..........  .....................  I-3750-85. \2\
                                      105[deg].
54. Residue--filterable, mg/L......  Gravimetric, 180[deg].  ......................  2540 C-2011..........  D5907-13.............  I-1750-85. \2\
55. Residue--non-filterable (TSS),   Gravimetric, 103-       ......................  2540 D-2011..........  D5907-13.............  I-3765-85. \2\
 mg/L.                                105[deg] post washing
                                      of residue.
56. Residue--settleable, mg/L......  Volumetric, (Imhoff     ......................  2540 F-2011..........
                                      cone), or gravimetric.
57. Residue--Volatile, mg/L........  Gravimetric, 550[deg].  160.4 (Issued 1971)     2540-E-2011..........  .....................  I-3753-85. \2\
                                                              \1\.
58. Rhodium--Total, \4\ mg/L.......  Digestion \4\,
                                      followed by any of
                                      the following:
                                        AA direct            ......................  3111 B-2011..........
                                         aspiration, or.
                                        AA furnace.........  265.2 (Issued 1978)
                                                              \1\.
                                        ICP/MS.............  ......................  3125 B-2011..........
59. Ruthenium--Total, \4\ mg/L.....  Digestion \4\,
                                      followed by any of
                                      the following:
                                        AA direct            ......................  3111 B-2011..........
                                         aspiration, or.

                                        AA furnace.........  267.2 \1\.............
                                        ICP/MS.............  ......................  3125 B-2011..........
60. Selenium--Total, \4\ mg/L......  Digestion \4\,
                                      followed by any of
                                      the following:
                                        AA furnace.........  ......................  3113 B-2010..........  D3859-08 (B).........  I-4668-98. \49\
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES \36\.......  200.5, Rev 4.2 (2003)   3120 B-2011..........  D1976-12.............
                                                              \68\; 200.7, Rev. 4.4
                                                              (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125 B-2011..........  D5673-10.............  993.14 \3\, I-4020-
                                                                                05. \70\
                                        AA gaseous hydride.  ......................  3114 B-2011, or 3114   D3859-08 (A).........  I-3667-85. \2\
                                                                                C-2011.
61. Silica--Dissolved, \37\ mg/L...  0.45-micron filtration
                                      followed by any of
                                      the following:
                                        Colorimetric,        ......................  4500-SiO 2 C-2011....  D859-10..............  I-1700-85. \2\
                                         Manual.
                                        Automated            ......................  4500-SiO 2 E-2011 or   .....................  I-2700-85. \2\
                                         (Molybdosilicate).                           F-2011.
                                        ICP/AES............  200.5, Rev. 4.2 (2003)  3120 B-2011..........  .....................  I-4471-97. \50\
                                                              \68\; 200.7, Rev. 4.4
                                                              (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125 B-2011..........  D5673-10.............  993.14. \3\
62. Silver--Total, \4\ \31\ mg/L...  Digestion\4, 29\,
                                      followed by any of
                                      the following:
                                        AA direct            ......................  3111 B-2011 or.......  .....................  974.27 \3\, p. 37
                                         aspiration.                                 3111 C-2011..........                          \9\, I-3720-85. \2\
                                        AA furnace.........  ......................  3113 B-2010..........  .....................  I-4724-89. \51\
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES............  200.5, Rev. 4.2 (2003)  3120 B-2011..........  D1976-12.............  I-4471-97. \50\
                                                              \68\; 200.7, Rev. 4.4
                                                              (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125 B-2011..........  D5673-10.............  993.14 \3\, I-4471-
                                                                                97. \50\
                                        DCP................  ......................  .....................  .....................  See footnote. \34\
63. Sodium--Total, \4\ mg/L........  Digestion \4,\,
                                      followed by any of
                                      the following:
                                        AA direct            ......................  3111 B-2011..........  .....................  973.54 \3\, I-3735-
                                         aspiration.                                                                                85. \2\
                                        ICP/AES............  200.5, Rev. 4.2 (2003)  3120 B-2011..........  .....................  I-4471-97. \50\
                                                              \68\; 200.7, Rev. 4.4
                                                              (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125 B-2011..........  D5673-10.............  993.14. \3\
                                        DCP................  ......................  .....................  .....................  See footnote. \34\
                                        Flame photometric..  ......................  3500-Na B-2011.......
                                        Ion Chromatography.  ......................  .....................  D6919-09.............
64. Specific conductance, micromhos/ Wheatstone bridge.....  120.1 (Rev. 1982) \1\.  2510 B-2011..........  D1125-95(99) (A).....  973.40 \3\, I-2781-
 cm at 25 [deg]C.                                                                                85. \2\
65. Sulfate (as SO4), mg/L.........  Automated colorimetric  375.2, Rev. 2.0 (1993)  4500-SO 4 \2\- F-2011
                                                                                or G-2011.
                                        Gravimetric........  ......................  4500-SO4 2- C-2011 or  .....................  925.54. \3\
                                                                                D-2011.
                                        Turbidimetric......  ......................  4500-SO4 2- E-2011...  D516-11..............
                                        Ion Chromatography.  300.0, Rev. 2.1 (1993)  4110 B-2011 or C-2011  D4327-03.............  993.30 \3\, I-4020-
                                                              and 300.1-1, Rev. 1.0                                                 05. \70\
                                                              (1997).
                                        CIE/UV.............  ......................  4140 B-2011..........  D6508-1010...........  D6508, Rev. 2. \54\
66. Sulfide (as S), mg/L...........  Sample Pretreatment...  ......................  4500-S 2-> B, C-2011.
                                        Titrimetric          ......................  4500-S 2- F-2011.....  .....................  I-3840-85. \2\
                                         (iodine).
                                        Colorimetric         ......................  4500-S 2- D-2011.....
                                         (methylene blue).

                                        Ion Selective        ......................  4500-S 2- G-2011.....  D4658-09.............
                                         Electrode.
67. Sulfite (as SO3), mg/L.........  Titrimetric (iodine-    ......................  4500-SO3 2- B-2011...
                                      iodate).
68. Surfactants, mg/L..............  Colorimetric            ......................  5540 C-2011..........  D2330-02.............
                                      (methylene blue).
69. Temperature, [deg]C............  Thermometric..........  ......................  2550 B-2010..........  .....................  See footnote. \32\
70. Thallium--Total, \4\ mg/L......  Digestion \4\,
                                      followed by any of
                                      the following:
                                        AA direct            ......................  3111 B-2011..........
                                         aspiration.
                                        AA furnace.........  279.2 (Issued 1978) \   3113 B-2010..........
                                                              1\.
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES............  200.7, Rev. 4.4 (1994)  3120 B-2011..........  D1976-12.............
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125 B-2011..........  D5673-10.............  993.14 \3\, I-4471-
                                                                                97. \50\
71. Tin--Total, \4\ mg/L...........  Digestion \4\,
                                      followed by any of
                                      the following:
                                        AA direct            ......................  3111 B-2011..........  .....................  I-3850-78. \8\
                                         aspiration.
                                        AA furnace.........  ......................  3113 B-2010..........
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES............  200.5, Rev. 4.2 (2003)
                                                              \68\; 200.7, Rev. 4.4
                                                              (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125 B-2011..........  D5673-10.............  993.14. \3\
72. Titanium--Total, \4\ mg/L......  Digestion \4\,
                                      followed by any of
                                      the following:
                                        AA direct            ......................  3111 D-2011..........
                                         aspiration.
                                        AA furnace.........  283.2 (Issued 1978)
                                                              \1\.
                                        ICP/AES............  200.7, Rev. 4.4 (1994)
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125 B-2011..........  D5673-10.............  993.14. \3\
                                        DCP................  ......................  .....................  .....................  See footnote. \34\
73. Turbidity, NTU \53\............  Nephelometric.........  180.1, Rev. 2.0 (1993)  2130 B-2011..........  D1889-00.............  I-3860-85. \2\
                                                                                See footnote. \65\
                                                                                See footnote. \66\
                                                                                See footnote. \67\
74. Vanadium--Total, \4\ mg/L......  Digestion \4\,
                                      followed by any of
                                      the following:
                                        AA direct            ......................  3111 D-2011..........
                                         aspiration.
                                        AA furnace.........  ......................  3113 B-2010..........  D3373-12.............
                                        ICP/AES............  200.5, Rev. 4.2 (2003)  3120 B-2011..........  D1976-12.............  I-4471-97. \50\
                                                              \68\; 200.7, Rev. 4.4
                                                              (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125 B-2011..........  D5673-10.............  993.14 \3\, I-4020-
                                                                                05. \70\
                                        DCP................  ......................  .....................  D4190-08.............  See footnote. \34\
                                        Colorimetric         ......................  3500-V B-2011........
                                         (Gallic Acid).
75. Zinc--Total \4\, mg/L..........  Digestion \4\,
                                      followed by any of
                                      the following:
                                        AA direct            ......................  3111 B-2011 or 3111 C- D1691-12 (A or B)....  974.27 \3\, p. 37
                                         aspiration \36\.                             2011.                                         \9\, I-3900-85. \2\
                                        AA furnace.........  289.2 (Issued 1978)
                                                              \1\.
                                        ICP/AES \36\.......  200.5, Rev. 4.2 (2003)  3120 B-2011..........  D1976-12.............  I-4471-97. \50\
                                                              \68\; 200.7, Rev. 4.4
                                                              (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125 B-2011..........  D5673-10.............  993.14 \3\, I-4020-05
                                                                                \70\
                                        DCP \36\...........  ......................  .....................  D4190-08.............  See footnote. \34\
                                        Colorimetric         ......................  3500 Zn B-2011.......  .....................  See footnote. \33\
                                         (Zincon).

76. Acid Mine Drainage.............  ......................  1627 \69\.............
--------------------------------------------------------------------------------------------------------------------------------------------------------
Table IB Notes:
\1\ Methods for Chemical Analysis of Water and Wastes, EPA-600/4-79-020. Revised March 1983 and 1979, where applicable. U.S. EPA.
\2\ Methods for Analysis of Inorganic Substances in Water and Fluvial Sediments, Techniques of Water-Resource Investigations of the U.S. Geological
  Survey, Book 5, Chapter A1., unless otherwise stated. 1989. USGS.
\3\ Official Methods of Analysis of the Association of Official Analytical Chemists, Methods Manual, Sixteenth Edition, 4th Revision, 1998. AOAC
  International.
\4\ For the determination of total metals (which are equivalent to total recoverable metals) the sample is not filtered before processing. A digestion
  procedure is required to solubilize analytes in suspended material and to break down organic-metal complexes (to convert the analyte to a detectable
  form for colorimetric analysis). For non-platform graphite furnace atomic absorption determinations a digestion using nitric acid (as specified in
  Section 4.1.3 of Methods for the Chemical Analysis of Water and Wastes) is required prior to analysis. The procedure used should subject the sample to
  gentle, acid refluxing and at no time should the sample be taken to dryness. For direct aspiration flame atomic absorption determinations (FLAA) a
  combination acid (nitric and hydrochloric acids) digestion is preferred prior to analysis. The approved total recoverable digestion is described as
  Method 200.2 in Supplement I of ``Methods for the Determination of Metals in Environmental Samples'' EPA/600R-94/111, May, 1994, and is reproduced in
  EPA Methods 200.7, 200.8, and 200.9 from the same Supplement. However, when using the gaseous hydride technique or for the determination of certain
  elements such as antimony, arsenic, selenium, silver, and tin by non-EPA graphite furnace atomic absorption methods, mercury by cold vapor atomic
  absorption, the noble metals and titanium by FLAA, a specific or modified sample digestion procedure may be required and in all cases the referenced
  method write-up should be consulted for specific instruction and/or cautions. For analyses using inductively coupled plasma-atomic emission
  spectrometry (ICP-AES), the direct current plasma (DCP) technique or EPA spectrochemical techniques (platform furnace AA, ICP-AES, and ICP-MS) use EPA
  Method 200.2 or an approved alternate procedure (e.g., CEM microwave digestion, which may be used with certain analytes as indicated in Table IB); the
  total recoverable digestion procedures in EPA Methods 200.7, 200.8, and 200.9 may be used for those respective methods. Regardless of the digestion
  procedure, the results of the analysis after digestion procedure are reported as ``total'' metals.
\5\ Copper sulfate or other catalysts that have been found suitable may be used in place of mercuric sulfate.
\6\ Manual distillation is not required if comparability data on representative effluent samples are on file to show that this preliminary distillation
  step is not necessary: however, manual distillation will be required to resolve any controversies. In general, the analytical method should be
  consulted regarding the need for distillation. If the method is not clear, the laboratory may compare a minimum of 9 different sample matrices to
  evaluate the need for distillation. For each matrix, a matrix spike and matrix spike duplicate are analyzed both with and without the distillation
  step. (A total of 36 samples, assuming 9 matrices). If results are comparable, the laboratory may dispense with the distillation step for future
  analysis. Comparable is defined as < 20% RPD for all tested matrices). Alternatively the two populations of spike recovery percentages may be compared
  using a recognized statistical test.
\7\ Industrial Method Number 379-75 WE Ammonia, Automated Electrode Method, Technicon Auto Analyzer II. February 19, 1976. Bran & Luebbe Analyzing
  Technologies Inc.
\8\ The approved method is that cited in Methods for Determination of Inorganic Substances in Water and Fluvial Sediments, Techniques of Water-Resources
  Investigations of the U.S. Geological Survey, Book 5, Chapter A1. 1979. USGS.
\9\ American National Standard on Photographic Processing Effluents. April 2, 1975. American National Standards Institute.
\10\ In-Situ Method 1003-8-2009, Biochemical Oxygen Demand (BOD) Measurement by Optical Probe. 2009. In-Situ Incorporated.
\11\ The use of normal and differential pulse voltage ramps to increase sensitivity and resolution is acceptable.
\12\ Carbonaceous biochemical oxygen demand (CBOD5) must not be confused with the traditional BOD5 test method which measures ``total BOD.'' The
  addition of the nitrification inhibitor is not a procedural option, but must be included to report the CBOD5 parameter. A discharger whose permit
  requires reporting the traditional BOD5 may not use a nitrification inhibitor in the procedure for reporting the results. Only when a discharger's
  permit specifically states CBOD5 is required can the permittee report data using a nitrification inhibitor.
\13\ OIC Chemical Oxygen Demand Method. 1978. Oceanography International Corporation.
\14\ Method 8000, Chemical Oxygen Demand, Hach Handbook of Water Analysis, 1979. Hach Company.
\15\ The back titration method will be used to resolve controversy.
\16\ Orion Research Instruction Manual, Residual Chlorine Electrode Model 97-70. 1977. Orion Research Incorporated. The calibration graph for the Orion
  residual chlorine method must be derived using a reagent blank and three standard solutions, containing 0.2, 1.0, and 5.0 mL 0.00281 N potassium
  iodate/100 mL solution, respectively.
\17\ Method 245.7, Mercury in Water by Cold Vapor Atomic Fluorescence Spectrometry, EPA-821-R-05-001. Revision 2.0, February 2005. US EPA.
\18\ National Council of the Paper Industry for Air and Stream Improvement (NCASI) Technical Bulletin 803, May 2000.
\19\ Method 8506, Biocinchoninate Method for Copper, Hach Handbook of Water Analysis. 1979. Hach Company.
\20\ When using a method with block digestion, this treatment is not required.
\21\ Industrial Method Number 378-75WA, Hydrogen ion (pH) Automated Electrode Method, Bran & Luebbe (Technicon) Autoanalyzer II. October 1976. Bran &
  Luebbe Analyzing Technologies.
\22\ Method 8008, 1,10-Phenanthroline Method using FerroVer Iron Reagent for Water. 1980. Hach Company.
\23\ Method 8034, Periodate Oxidation Method for Manganese, Hach Handbook of Wastewater Analysis. 1979. Hach Company.
\24\ Methods for Analysis of Organic Substances in Water and Fluvial Sediments, Techniques of Water-Resources Investigations of the U.S. Geological
  Survey, Book 5, Chapter A3, (1972 Revised 1987). 1987. USGS.
\25\ Method 8507, Nitrogen, Nitrite-Low Range, Diazotization Method for Water and Wastewater. 1979. Hach Company.
\26\ Just prior to distillation, adjust the sulfuric-acid-preserved sample to pH 4 with 1 + 9 NaOH.
\27\ The colorimetric reaction must be conducted at a pH of 10.0  0.2.
\28\ Addison, R.F., and R.G. Ackman. 1970. Direct Determination of Elemental Phosphorus by Gas-Liquid Chromatography, Journal of Chromatography,
  47(3):421-426.
\29\ 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 pH of 12. Therefore, for levels of silver above 1 mg/L, 20 mL of sample should be
  diluted to 100 mL by adding 40 mL each of 2 M Na2S2O3 and NaOH. Standards should be prepared in the same manner. For levels of silver below 1 mg/L the
  approved method is satisfactory.
\30\ The use of EDTA decreases method sensitivity. Analysts may omit EDTA or replace with another suitable complexing reagent provided that all method
  specified quality control acceptance criteria are met.
\31\ For samples known or suspected to contain high levels of silver (e.g., in excess of 4 mg/L), cyanogen iodide should be used to keep the silver in
  solution for analysis. Prepare a cyanogen iodide solution by adding 4.0 mL of concentrated NH4OH, 6.5 g of KCN, and 5.0 mL of a 1.0 N solution of I2
  to 50 mL of reagent water in a volumetric flask and dilute to 100.0 mL. After digestion of the sample, adjust the pH of the digestate to >7 to prevent
  the formation of HCN under acidic conditions. Add 1 mL of the cyanogen iodide solution to the sample digestate and adjust the volume to 100 mL with
  reagent water (NOT acid). If cyanogen iodide is added to sample digestates, then silver standards must be prepared that contain cyanogen iodide as
  well. Prepare working standards by diluting a small volume of a silver stock solution with water and adjusting the pH>7 with NH4OH. Add 1 mL of the
  cyanogen iodide solution and let stand 1 hour. Transfer to a 100-mL volumetric flask and dilute to volume with water.

\32\ ''Water Temperature-Influential Factors, Field Measurement and Data Presentation,'' Techniques of Water-Resources Investigations of the U.S.
  Geological Survey, Book 1, Chapter D1. 1975. USGS.
\33\ Method 8009, Zincon Method for Zinc, Hach Handbook of Water Analysis, 1979. Hach Company.
\34\ Method AES0029, Direct Current Plasma (DCP) Optical Emission Spectrometric Method for Trace Elemental Analysis of Water and Wastes. 1986--Revised
  1991. Thermo Jarrell Ash Corporation.
\35\ In-Situ Method 1004-8-2009, Carbonaceous Biochemical Oxygen Demand (CBOD) Measurement by Optical Probe. 2009. In-Situ Incorporated.
\36\ Microwave-assisted digestion may be employed for this metal, when analyzed by this methodology. Closed Vessel Microwave Digestion of Wastewater
  Samples for Determination of Metals. April 16, 1992. CEM Corporation
\37\ When determining boron and silica, only plastic, PTFE, or quartz laboratory ware may be used from start until completion of analysis.
\38\ Only use n-hexane (n-Hexane--85% minimum purity, 99.0% min. saturated C6 isomers, residue less than 1 mg/L) extraction solvent when determining Oil
  and Grease parameters--Hexane Extractable Material (HEM), or Silica Gel Treated HEM (analogous to EPA Methods 1664 Rev. A and 1664 Rev. B). Use of
  other extraction solvents is prohibited.
\39\ Method PAI-DK01, Nitrogen, Total Kjeldahl, Block Digestion, Steam Distillation, Titrimetric Detection. Revised December 22, 1994. OI Analytical.
\40\ Method PAI-DK02, Nitrogen, Total Kjeldahl, Block Digestion, Steam Distillation, Colorimetric Detection. Revised December 22, 1994. OI Analytical.
\41\ Method PAI-DK03, Nitrogen, Total Kjeldahl, Block Digestion, Automated FIA Gas Diffusion. Revised December 22, 1994. OI Analytical.
\42\ Method 1664 Rev. B is the revised version of EPA Method 1664 Rev. A. U.S. EPA. February 1999, Revision A. Method 1664, n-Hexane Extractable
  Material (HEM; Oil and Grease) and Silica Gel Treated n-Hexane Extractable Material (SGT-HEM; Non-polar Material) by Extraction and Gravimetry. EPA-
  821-R-98-002. U.S. EPA. February 2010, Revision B. Method 1664, n-Hexane Extractable Material (HEM; Oil and Grease) and Silica Gel Treated n-Hexane
  Extractable Material (SGT-HEM; Non-polar Material) by Extraction and Gravimetry. EPA-821-R-10-001.
\43\ Method 1631, Revision E, Mercury in Water by Oxidation, Purge and Trap, and Cold Vapor Atomic Fluorescence Spectrometry, EPA-821-R-02-019. Revision
  E. August 2002, U.S. EPA. The application of clean techniques described in EPA's Method 1669: Sampling Ambient Water for Trace Metals at EPA Water
  Quality Criteria Levels, EPA-821-R-96-011, are recommended to preclude contamination at low-level, trace metal determinations.
\44\ Method OIA-1677-09, Available Cyanide by Ligand Exchange and Flow Injection Analysis (FIA). 2010. OI Analytical.
\45\ Open File Report 00-170, Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of Ammonium Plus
  Organic Nitrogen by a Kjeldahl Digestion Method and an Automated Photometric Finish that Includes Digest Cleanup by Gas Diffusion. 2000. USGS.
\46\ Open File Report 93-449, Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of Chromium in Water by
  Graphite Furnace Atomic Absorption Spectrophotometry. 1993. USGS.
\47\ Open File Report 97-198, Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of Molybdenum by
  Graphite Furnace Atomic Absorption Spectrophotometry. 1997. USGS.
\48\ Open File Report 92-146, Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of Total Phosphorus by
  Kjeldahl Digestion Method and an Automated Colorimetric Finish That Includes Dialysis. 1992. USGS.
\49\ Open File Report 98-639, Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of Arsenic and Selenium
  in Water and Sediment by Graphite Furnace-Atomic Absorption Spectrometry. 1999. USGS.
\50\ Open File Report 98-165, Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of Elements in Whole-
  water Digests Using Inductively Coupled Plasma-Optical Emission Spectrometry and Inductively Coupled Plasma-Mass Spectrometry. 1998. USGS.
\51\ Open File Report 93-125, Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of Inorganic and
  Organic Constituents in Water and Fluvial Sediments. 1993. USGS.
\52\ Unless otherwise indicated, all EPA methods, excluding EPA Method 300.1-1, are published in U.S. EPA. May 1994. Methods for the Determination of
  Metals in Environmental Samples, Supplement I, EPA/600/R-94/111; or U.S. EPA. August 1993. Methods for the Determination of Inorganic Substances in
  Environmental Samples, EPA/600/R-93/100. EPA Method 300.1 is US EPA. Revision 1.0, 1997, including errata cover sheet April 27, 1999. Determination of
  Inorganic Ions in Drinking Water by Ion Chromatography.
\53\ Styrene divinyl benzene beads (e.g., AMCO-AEPA-1 or equivalent) and stabilized formazin (e.g., Hach StablCal\TM\ or equivalent) are acceptable
  substitutes for formazin.
\54\ Method D6508-10, Test Method for Determination of Dissolved Inorganic Anions in Aqueous Matrices Using Capillary Ion Electrophoresis and Chromate
  Electrolyte. 2010. ASTM.
\55\ Kelada-01, Kelada Automated Test Methods for Total Cyanide, Acid Dissociable Cyanide, and Thiocyanate, EPA 821-B-01-009, Revision 1.2, August 2001.
  US EPA. Note: A 450-W UV lamp may be used in this method instead of the 550-W lamp specified if it provides performance within the quality control
  (QC) acceptance criteria of the method in a given instrument. Similarly, modified flow cell configurations and flow conditions may be used in the
  method, provided that the QC acceptance criteria are met.
\56\ QuikChem Method 10-204-00-1-X, Digestion and Distillation of Total Cyanide in Drinking and Wastewaters using MICRO DIST and Determination of
  Cyanide by Flow Injection Analysis. Revision 2.2, March 2005. Lachat Instruments.
\57\ When using sulfide removal test procedures described in EPA Method 335.4-1, reconstitute particulate that is filtered with the sample prior to
  distillation.
\58\ Unless otherwise stated, if the language of this table specifies a sample digestion and/or distillation ``followed by'' analysis with a method,
  approved digestion and/or distillation are required prior to analysis.
\59\ Samples analyzed for available cyanide using OI Analytical method OIA-1677-09 or ASTM method D6888-09 that contain particulate matter may be
  filtered only after the ligand exchange reagents have been added to the samples, because the ligand exchange process converts complexes containing
  available cyanide to free cyanide, which is not removed by filtration. Analysts are further cautioned to limit the time between the addition of the
  ligand exchange reagents and sample filtration to no more than 30 minutes to preclude settling of materials in samples.
\60\ Analysts should be aware that pH optima and chromophore absorption maxima might differ when phenol is replaced by a substituted phenol as the color
  reagent in Berthelot Reaction (``phenol-hypochlorite reaction'') colorimetric ammonium determination methods. For example when phenol is used as the
  color reagent, pH optimum and wavelength of maximum absorbance are about 11.5 and 635 nm, respectively--see, Patton, C.J. and S.R. Crouch. March 1977.
  Anal. Chem. 49:464-469. These reaction parameters increase to pH > 12.6 and 665 nm when salicylate is used as the color reagent--see, Krom, M.D. April
  1980. The Analyst 105:305-316.
\61\ If atomic absorption or ICP instrumentation is not available, the aluminon colorimetric method detailed in the 19th Edition of Standard Methods may
  be used. This method has poorer precision and bias than the methods of choice.
\62\ Easy (1-Reagent) Nitrate Method, Revision November 12, 2011. Craig Chinchilla.
\63\ Hach Method 10360, Luminescence Measurement of Dissolved Oxygen in Water and Wastewater and for Use in the Determination of BOD5 and cBOD5.
  Revision 1.2, October 2011. Hach Company. This method may be used to measure dissolved oxygen when performing the methods approved in Table IB for
  measurement of biochemical oxygen demand (BOD) and carbonaceous biochemical oxygen demand (CBOD).
\64\ In-Situ Method 1002-8-2009, Dissolved Oxygen (DO) Measurement by Optical Probe. 2009. In-Situ Incorporated.
\65\ Mitchell Method M5331, Determination of Turbidity by Nephelometry. Revision 1.0, July 31, 2008. Leck Mitchell.
\66\ Mitchell Method M5271, Determination of Turbidity by Nephelometry. Revision 1.0, July 31, 2008. Leck Mitchell.
\67\ Orion Method AQ4500, Determination of Turbidity by Nephelometry. Revision 5, March 12, 2009. Thermo Scientific.
\68\ EPA Method 200.5, Determination of Trace Elements in Drinking Water by Axially Viewed Inductively Coupled Plasma-Atomic Emission Spectrometry, EPA/
  600/R-06/115. Revision 4.2, October 2003. US EPA.
\69\ Method 1627, Kinetic Test Method for the Prediction of Mine Drainage Quality, EPA-821-R-09-002. December 2011. US EPA.

\70\ Techniques and Methods Book 5-B1, Determination of Elements in Natural-Water, Biota, Sediment and Soil Samples Using Collision/Reaction Cell
  Inductively Coupled Plasma-Mass Spectrometry, Chapter 1, Section B, Methods of the National Water Quality Laboratory, Book 5, Laboratory Analysis,
  2006. USGS.
\71\ Water-Resources Investigations Report 01-4132, Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination
  of Organic Plus Inorganic Mercury in Filtered and Unfiltered Natural Water with Cold Vapor-Atomic Fluorescence Spectrometry, 2001. USGS.
\72\ USGS Techniques and Methods 5-B8, Chapter 8, Section B, Methods of the National Water Quality Laboratory Book 5, Laboratory Analysis, 2011 USGS.
\73\ NECi Method N07-0003, Revision 9.0, March 2014, Method for Nitrate Reductase Nitrate-Nitrogen Analysis, The Nitrate Elimination Co., Inc.
\74\ Timberline Instruments, LLC Method Ammonia-001, Timberline Instruments, LLC.
\75\ Hach Company Method 10206, Hach Company.
\76\ Hach Company Method 10242, Hach Company.
\77\ National Council for Air and Stream Improvement (NCASI) Method TNTP-W10900, Total (Kjeldahl) Nitrogen and Total Phosphorus in Pulp and Paper
  Biologically Treated Effluent by Alkaline Persulfate Digestion. June 2011.

                                     Table IC--List of Approved Test Procedures for Non-Pesticide Organic Compounds
--------------------------------------------------------------------------------------------------------------------------------------------------------
          Parameter \1\                  Method               EPA \2\ \7\            Standard  methods               ASTM                   Other
--------------------------------------------------------------------------------------------------------------------------------------------------------
1. Acenaphthene.................  GC.................  610
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
                                  HPLC...............  610                       6440 B-2005               D4657-92 (98)
2. Acenaphthylene...............  GC.................  610
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
                                  HPLC...............  610                       6440 B-2005               D4657-92 (98)
3. Acrolein.....................  GC.................  603
                                  GC/MS..............  624.1 \4\,1624B
4. Acrylonitrile................  GC.................  603
                                  GC/MS..............  624.1 \4\,1624B
5. Anthracene...................  GC.................  610
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
                                  HPLC...............  610                       6440B-2005                D4657-92 (98)
6. Benzene......................  GC.................  602                       6200 C-2011
                                  GC/MS..............  624.1, 1624B              6200 B-2011
7. Benzidine....................  Spectro-photometric  ........................  ........................  ........................  See footnote \3\,
                                                                                p.1.
                                  GC/MS..............  625.1 \5\, 1625B          6410 B-2000
                                  HPLC...............  605
8. Benzo(a)anthracene...........  GC.................  610
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
                                  HPLC...............  610                       6440 B-2005               D4657-92 (98)
9. Benzo(a)pyrene...............  GC.................  610
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
                                  HPLC...............  610                       6440 B-2005               D4657-92 (98)
10. Benzo(b)fluoranthene........  GC.................  610
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
                                  HPLC...............  610                       6440 B-2005               D4657-92 (98)
11. Benzo(g,h,i)perylene........  GC.................  610
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
                                  HPLC...............  610                       6440 B-2005               D4657-92 (98)
12. Benzo(k)fluoranthene........  GC.................  610
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
                                  HPLC...............  610                       6440 B-2005               D4657-92 (98)
13. Benzyl chloride.............  GC.................  ........................  ........................  ........................  See footnote \3\,
                                                                                p. 130.
                                  GC/MS..............  ........................  ........................  ........................  See footnote \6\,
                                                                                p. S102.
14. Butyl benzyl phthalate......  GC.................  606
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
15. bis(2-Chloroethoxy) methane.  GC.................  611
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
16. bis(2-Chloroethyl) ether....  GC.................  611
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
17. bis(2-Ethylhexyl) phthalate.  GC.................  606

                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
18. Bromodichloromethane........  GC.................  601                       6200 C-2011
                                  GC/MS..............  624.1, 1624B              6200 B-2011
19. Bromoform...................  GC.................  601                       6200 C-2011
                                  GC/MS..............  624.1, 1624B              6200 B-2011
20. Bromomethane................  GC.................  601                       6200 C-2011
                                  GC/MS..............  624.1, 1624B              6200 B-2011
21. 4-Bromophenyl phenyl ether..  GC.................  611
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
22. Carbon tetrachloride........  GC.................  601                       6200 C-2011               ........................  See footnote \3\,
                                                                                p. 130.
                                  GC/MS..............  624.1, 1624B              6200 B-2011
23. 4-Chloro-3-methyl phenol....  GC.................  604                       6420 B-2000
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
24. Chlorobenzene...............  GC.................  601, 602                  6200 C-2011               ........................  See footnote \3\,
                                                                                p. 130.
                                  GC/MS..............  624.1, 1624B              6200 B-2011
25. Chloroethane................  GC.................  601                       6200 C-2011
                                  GC/MS..............  624.1, 1624B              6200 B-2011
26. 2-Chloroethylvinyl ether....  GC.................  601
                                  GC/MS..............  624.1, 1624B
27. Chloroform..................  GC.................  601                       6200 C-2011               ........................  See footnote \3\,
                                                                                p. 130.
                                  GC/MS..............  624.1, 1624B              6200 B-2011
28. Chloromethane...............  GC.................  601                       6200 C-2011
                                  GC/MS..............  624.1, 1624B              6200 B-2011
29. 2-Chloronaphthalene.........  GC.................  612
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
30. 2-Chlorophenol..............  GC.................  604                       6420 B-2000
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
31. 4-Chlorophenyl phenyl ether.  GC.................  611
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
32. Chrysene....................  GC.................  610
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
                                  HPLC...............  610                       6440 B-2005               D4657-92 (98)
33. Dibenzo(a,h)anthracene......  GC.................  610
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
                                  HPLC...............  610                       6440 B-2005               D4657-92 (98)
34. Dibromochloromethane........  GC.................  601                       6200 C-2011
                                  GC/MS..............  624.1, 1624B              6200 B-2011
35. 1,2-Dichlorobenzene.........  GC.................  601, 602                  6200 C-2011
                                  GC/MS..............  625.1, 1625B              6200 B-2011               ........................  See footnote \9\,
                                                                                p. 27.
36. 1,3-Dichlorobenzene.........  GC.................  601, 602                  6200 C-2011
                                  GC/MS..............  624.1, 1625B              6200 B-2011               ........................  See footnote \9\,
                                                                                p. 27.
37. 1,4-Dichlorobenzene.........  GC.................  601, 602                  6200 C-2011
                                  GC/MS..............  624.1, 1625B              6200 B-2011               ........................  See footnote \9\,
                                                                                p. 27.
38. 3,3'-Dichlorobenzidine......  GC/MS..............  625.1, 1625B              6410 B-2000
                                  HPLC...............  605
39. Dichlorodifluoromethane.....  GC.................  601
                                  GC/MS..............  ........................  6200 C-2011
40. 1,1-Dichloroethane..........  GC.................  601                       6200 C-2011
                                  GC/MS..............  624.1, 1624B              6200 B-2011
41. 1,2-Dichloroethane..........  GC.................  601                       6200 C-2011
                                  GC/MS..............  624.1, 1624B              6200 B-2011
42. 1,1-Dichloroethene..........  GC.................  601                       6200 C-2011
                                  GC/MS..............  624.1, 1624B              6200 B-2011
43. trans-1,2-Dichloroethene....  GC.................  601                       6200 C-2011
                                  GC/MS..............  624.1, 1624B              6200 B-2011
44. 2,4-Dichlorophenol..........  GC.................  604                       6420 B-2000

                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
45. 1,2-Dichloropropane.........  GC.................  601                       6200 C-2011
                                  GC/MS..............  624.1, 1624B              6200 B-2011
46. cis-1,3-Dichloropropene.....  GC.................  601                       6200 C-2011
                                  GC/MS..............  624.1, 1624B              6200 B-2011
47. trans-1,3-Dichloropropene...  GC.................  601                       6200 C-2011
                                  GC/MS..............  624.1, 1624B              6200 B-2011
48. Diethyl phthalate...........  GC.................  606
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
49. 2,4-Dimethylphenol..........  GC.................  604                       6420 B-2000
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
50. Dimethyl phthalate..........  GC.................  606
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
51. Di-n-butyl phthalate........  GC.................  606
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
52. Di-n-octyl phthalate........  GC.................  606
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
53. 2, 4-Dinitrophenol..........  GC.................  604                       6420 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
                                  GC/MS..............  625.1, 1625B              6410 B-2000
54. 2,4-Dinitrotoluene..........  GC.................  609
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
55. 2,6-Dinitrotoluene..........  GC.................  609
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
56. Epichlorohydrin.............  GC.................  ........................  ........................  ........................  See footnote \3\,
                                                                                p. 130.
                                  GC/MS..............  ........................  ........................  ........................  See footnote \6\,
                                                                                p. S102.
57. Ethylbenzene................  GC.................  602                       6200 C-2011
                                  GC/MS..............  624.1, 1624B              6200 B-2011
58. Fluoranthene................  GC.................  610
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
                                  HPLC...............  610                       6440 B-2005               D4657-92 (98)
59. Fluorene....................  GC.................  610
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
                                  HPLC...............  610                       6440 B-2005               D4657-92 (98)
60. 1,2,3,4,6,7,8-Heptachloro-    GC/MS..............  1613B
 dibenzofuran.
61. 1,2,3,4,7,8,9-Heptachloro-    GC/MS..............  1613B
 dibenzofuran.
62. 1,2,3,4,6,7,8- Heptachloro-   GC/MS..............  1613B
 dibenzo-p-dioxin.
63. Hexachlorobenzene...........  GC.................  612
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
64. Hexachlorobutadiene.........  GC.................  612
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
65. Hexachlorocyclopentadiene...  GC.................  612
                                  GC/MS..............  625.1\ 5\, 1625B          6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
66. 1,2,3,4,7,8-Hexachloro-       GC/MS..............  1613B
 dibenzofuran.
67. 1,2,3,6,7,8-Hexachloro-       GC/MS..............  1613B
 dibenzofuran.
68. 1,2,3,7,8,9-Hexachloro-       GC/MS..............  1613B
 dibenzofuran.
69. 2,3,4,6,7,8-Hexachloro-       GC/MS..............  1613B
 dibenzofuran.
70. 1,2,3,4,7,8-Hexachloro-       GC/MS..............  1613B
 dibenzo-p-dioxin.
71. 1,2,3,6,7,8-Hexachloro-       GC/MS..............  1613B
 dibenzo-p-dioxin.
72. 1,2,3,7,8,9-Hexachloro-       GC/MS..............  1613B
 dibenzo-p-dioxin.
73. Hexachloroethane............  GC.................  612
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
74. Indeno(1,2,3-c,d) pyrene....  GC.................  610
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.

                                  HPLC...............  610                       6440 B-2005               D4657-92 (98)
75. Isophorone..................  GC.................  609
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
76. Methylene chloride..........  GC.................  601                       6200 C-2011               ........................  See footnote \3\,
                                                                                p. 130.
                                  GC/MS..............  624.1, 1624B              6200 B-2011
77. 2-Methyl-4,6-dinitrophenol..  GC.................  604                       6420 B-2000
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
78. Naphthalene.................  GC.................  610
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
                                  HPLC...............  610                       6440 B-2005
79. Nitrobenzene................  GC.................  609
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
                                  HPLC...............  ........................  ........................  D4657-92 (98)
80. 2-Nitrophenol...............  GC.................  604                       6420 B-2000
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
81. 4-Nitrophenol...............  GC.................  604                       6420 B-2000
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
82. N-Nitrosodimethylamine......  GC.................  607
                                  GC/MS..............  625.1 \ 5\, 1625B         6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
83. N-Nitrosodi-n-propylamine...  GC.................  607
                                  GC/MS..............  625.1 \ 5\, 1625B         6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
84. N-Nitrosodiphenylamine......  GC.................  607
                                  GC/MS..............  625.1 \5\, 1625B          6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
85. Octachlorodibenzofuran......  GC/MS..............  1613B \10\
86. Octachlorodibenzo-p-dioxin..  GC/MS..............  1613B \10\
87. 2,2'-oxybis(1-chloropropane)  GC.................  611
 \12\ [also known as bis(2-
 Chloro-1-methylethyl) ether].
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
88. PCB-1016....................  GC.................  608.3                     ........................  ........................  See footnote \3\,
                                                                                p. 43; See
                                                                                footnote. \8\
                                  GC/MS..............  625.1                     6410 B-2000
89. PCB-1221....................  GC.................  608.3                     ........................  ........................  See footnote \3\,
                                                                                p. 43; See
                                                                                footnote. \8\
                                  GC/MS..............  625.1                     6410 B-2000
90. PCB-1232....................  GC.................  608.3                     ........................  ........................  See footnote \3\,
                                                                                p. 43; See
                                                                                footnote. \8\
                                  GC/MS..............  625.1                     6410 B-2000
91. PCB-1242....................  GC.................  608.3                     ........................  ........................  See footnote \3\,
                                                                                p. 43; See
                                                                                footnote. \8\
                                  GC/MS..............  625.1                     6410 B-2000
92. PCB-1248....................  GC.................  608.3                     ........................  ........................  See footnote \3\,
                                                                                p. 43; See
                                                                                footnote. \8\
                                  GC/MS..............  625.1                     6410 B-2000
93. PCB-1254....................  GC.................  608.3                     ........................  ........................  See footnote \3\,
                                                                                p. 43; See
                                                                                footnote. \8\
                                  GC/MS..............  625.1                     6410 B-2000
94. PCB-1260....................  GC.................  608.3                     ........................  ........................  See footnote \3\,
                                                                                p. 43; See
                                                                                footnote. \8\
                                  GC/MS..............  625.1                     6410 B-2000
95. 1,2,3,7,8-Pentachloro-        GC/MS..............  1613B
 dibenzofuran.
96. 2,3,4,7,8-Pentachloro-        GC/MS..............  1613B
 dibenzofuran.
97. 1,2,3,7,8,-Pentachloro-       GC/MS..............  1613B
 dibenzo-p-dioxin.

98. Pentachlorophenol...........  GC.................  604                       6420 B-2000               ........................  See footnote \3\,
                                                                                p. 140.
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
99. Phenanthrene................  GC.................  610
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
                                  HPLC...............  610                       6440 B-2005               D4657-92 (98)
100. Phenol.....................  GC.................  604                       6420 B-2000
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
101. Pyrene.....................  GC.................  610
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
                                  HPLC...............  610                       6440 B-2005               D4657-92 (98).
102. 2,3,7,8-Tetrachloro-         GC/MS..............  1613B \10\
 dibenzofuran.
103. 2,3,7,8-Tetrachloro-dibenzo- GC/MS..............  613, 625.1 \5a\, 1613B
 p-dioxin.
104. 1,1,2,2-Tetrachloroethane..  GC.................  601                       6200 C-2011               ........................  See footnote \3\,
                                                                                p. 130.
                                  GC/MS..............  624.1, 1624B              6200 B-2011
105. Tetrachloroethene..........  GC.................  601                       6200 C-2011               ........................  See footnote \3\,
                                                                                p. 130.
                                  GC/MS..............  624.1, 1624B              6200 B-2011
106. Toluene....................  GC.................  602                       6200 C-2011
                                  GC/MS..............  624.1, 1624B              6200 B-2011
107. 1,2,4-Trichlorobenzene.....  GC.................  612                       ........................  ........................  See footnote \3\,
                                                                                p. 130.
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
108. 1,1,1-Trichloroethane......  GC.................  601                       6200 C-2011
                                  GC/MS..............  624.1, 1624B              6200 B-2011
109. 1,1,2-Trichloroethane......  GC.................  601                       6200 C-2011               ........................  See footnote \3\,
                                                                                p. 130.
                                  GC/MS..............  624.1, 1624B              6200 B-2011
110. Trichloroethene............  GC.................  601                       6200 C-2011
                                  GC/MS..............  624.1, 1624B              6200 B-2011
111. Trichlorofluoromethane.....  GC.................  601                       6200 C-2011
                                  GC/MS..............  624.1                     6200 B-2011
112. 2,4,6-Trichlorophenol......  GC.................  604                       6420 B-2000
                                  GC/MS..............  625.1, 1625B              6410 B-2000               ........................  See footnote \9\,
                                                                                p. 27.
113. Vinyl chloride.............  GC.................  601                       6200 C-2011
                                  GC/MS..............  624.1, 1624B              6200 B-2011
114. Nonylphenol................  GC/MS..............  ........................  ........................  D7065-11
115. Bisphenol A (BPA)..........  GC/MS..............  ........................  ........................  D7065-11
116. p-tert-Octylphenol (OP)....  GC/MS..............  ........................  ........................  D7065-11
117. Nonylphenol Monoethoxylate   GC/MS..............  ........................  ........................  D7065-11
 (NP1EO).
118. Nonylphenol Diethoxylate     GC/MS..............  ........................  ........................  D7065-11
 (NP2EO).
119. Adsorbable Organic Halides   Adsorption and       1650 \11\
 (AOX).                            Coulometric
                                   Titration.
120. Chlorinated Phenolics......  In Situ Acetylation  1653 \11\
                                   and GC/MS.
--------------------------------------------------------------------------------------------------------------------------------------------------------
Table IC notes:
\1\ All parameters are expressed in micrograms per liter ([micro]g/L) except for Method 1613B, in which the parameters are expressed in picograms per
  liter (pg/L).
\2\ The full text of Methods 601-613, 1613B, 1624B, and 1625B are provided 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 608.3, 624.1, and 625.1 are available at:
  water.epa.gov/scitech/methods/cwa/methods_index.cfm.
\3\ Methods for Benzidine: Chlorinated Organic Compounds, Pentachlorophenol and Pesticides in Water and Wastewater. September 1978. U.S. EPA.
\4\ Method 624.1 may be used for quantitative determination of acrolein and acrylonitrile, provided that the laboratory has documentation to
  substantiate the ability to detect and quantify these analytes at levels necessary to comply with any associated regulations. In addition, the use of
  sample introduction techniques other than simple purge-and-trap may be required. QC acceptance criteria from Method 603 should be used when analyzing
  samples for acrolein and acrylonitrile in the absence of such criteria in Method 624.1.
\5\ Method 625.1 may be extended to include benzidine, hexachlorocyclopentadiene, N-nitrosodimethylamine, N-nitrosodi-n-propylamine, and N-
  nitrosodiphenylamine. However, when they are known to be present, Methods 605, 607, and 612, or Method 1625B, are preferred methods for these
  compounds.
\5a\ Method 625.1 screening only.

\6\ Selected Analytical Methods Approved and Cited by the United States Environmental Protection Agency, Supplement to the 15th Edition of Standard
  Methods for the Examination of Water and Wastewater 1981. American Public Health Association (APHA).
\7\ Each analyst must make an initial, one-time demonstration of their ability to generate acceptable precision and accuracy with Methods 601-603,
  1624B, and 1625B in accordance with procedures each in Section 8.2 of each of these Methods. Additionally, each laboratory, on an on-going basis must
  spike and analyze 10% (5% for Methods 624.1 and 625.1 and 100% for methods 1624B and 1625B) 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. The results should be reported, but cannot be used to demonstrate regulatory
  compliance. These quality control requirements also apply to the Standard Methods, ASTM Methods, and other methods cited.
\8\ Organochlorine Pesticides and PCBs in Wastewater Using Empore\TM\ Disk. Revised October 28, 1994. 3M Corporation.
\9\ Method O-3116-87 is in Open File Report 93-125, Methods of Analysis by U.S. Geological Survey National Water Quality Laboratory--Determination of
  Inorganic and Organic Constituents in Water and Fluvial Sediments. 1993. USGS.
\10\ Analysts may use Fluid Management Systems, Inc. Power-Prep system in place of manual cleanup provided the analyst meets the requirements of Method
  1613B (as specified in Section 9 of the method) and permitting authorities. Method 1613, Revision B, Tetra- through Octa-Chlorinated Dioxins and
  Furans by Isotope Dilution HRGC/HRMS. Revision B, 1994. U.S. EPA. The full text of this method is provided in Appendix A to 40 CFR part 136 and at
  http://water.epa.gov/scitech/methods/cwa/index.cfm.
\11\ Method 1650, Adsorbable Organic Halides by Adsorption and Coulometric Titration. Revision C, 1997 U.S. EPA. Method 1653, Chlorinated Phenolics in
  Wastewater by In Situ Acetylation and GCMS. Revision A, 1997 U.S. EPA. The full text for both of these methods is provided at Appendix A in part 430,
  The Pulp, Paper, and Paperboard Point Source Category.
\12\ The compound was formerly inaccurately labeled as 2,2'-oxybis(2-chloropropane) and bis(2-chloroisopropyl) ether. Some versions of Methods 611, and
  1625 inaccurately list the analyte as ``bis(2-chloroisopropyl)ether,'' but use the correct CAS number of 108-60-1.

                                              Table ID--List of Approved Test Procedures for Pesticides \1\
--------------------------------------------------------------------------------------------------------------------------------------------------------
             Parameter                       Method                EPA 2 7 10          Standard  methods             ASTM                  Other
--------------------------------------------------------------------------------------------------------------------------------------------------------
1. Aldrin..........................  GC....................  617, 608.3............  6630 B-2007 & C-2007.  D3086-90, D5812-96     See footnote,\3\ p.
                                                                                (02).                  7; See footnote,\4\
                                                                                O-3104-83; See
                                                                                footnote, \8\
                                                                                3M0222.
                                     GC/MS.................  625.1.................  6410 B-2000..........
2. Ametryn.........................  GC....................  507, 619..............  .....................  .....................  See footnote,\3\ p.
                                                                                83; See footnote,\9\
                                                                                O-3106-93; See
                                                                                footnote,\6\ p. S68.
                                     GC/MS.................  525.2, 625.1..........  .....................  .....................  See footnote,\14\ O-
                                                                                1121-91.
3. Aminocarb.......................  TLC...................  ......................  .....................  .....................  See footnote,\3\ p.
                                                                                94; See footnote,\6\
                                                                                p. S60.
                                     HPLC..................  632...................
4. Atraton.........................  GC....................  619...................  .....................  .....................  See footnote,\3\ p.
                                                                                83; See footnote,\6\
                                                                                p. S68.
                                     GC/MS.................  625.1.................
5. Atrazine........................  GC....................  507, 619, 608.3.......  .....................  .....................  See footnote,\3\ p.
                                                                                83; See footnote,\6\
                                                                                p. S68; See
                                                                                footnote,\9\ O-3106-
                                                                                93.
                                     HPLC/MS...............  ......................  .....................  .....................  See footnote,\12\ O-
                                                                                2060-01.
                                     GC/MS.................  525.1, 525.2, 625.1...  .....................  .....................  See footnote,\11\ O-
                                                                                1126-95.
6. Azinphos methyl.................  GC....................  614, 622, 1657........  .....................  .....................  See footnote,\3\ p.
                                                                                25; See footnote,\6\
                                                                                p. S51.
                                     GC-MS.................  625.1.................  .....................  .....................  See footnote,\11\ O-
                                                                                1126-95.
7. Barban..........................  TLC...................  ......................  .....................  .....................  See footnote,\3\ p.
                                                                                104; See
                                                                                footnote,\6\ p. S64.
                                     HPLC..................  632...................
                                     GC/MS.................  625.1.................
8. [alpha]-BHC.....................  GC....................  617, 608.3............  6630 B-2007 & C-2007.  D3086-90, D5812-       See footnote,\3\ p.
                                                                                96(02).                7; See footnote,\8\
                                                                                3M0222.
                                     GC/MS.................  625.1 \5\.............  6410 B-2000..........  .....................  See footnote,\11\ O-
                                                                                1126-95.
9. [beta]-BHC......................  GC....................  617, 608.3............  6630 B-2007 & C-2007.  D3086-90, D5812-       See footnote,\8\
                                                                                96(02).                3M0222.
                                     GC/MS.................  625.1.................  6410 B-2000..........
10. [delta]-BHC....................  GC....................  617, 608.3............  6630 B-2007 & C-2007.  D3086-90, D5812-       See footnote,\8\
                                                                                96(02).                3M0222.
                                     GC/MS.................  625.1.................  6410 B-2000..........
11. [gamma]-BHC (Lindane)..........  GC....................  617, 608.3............  6630 B-2007 & C-2007.  D3086-90, D5812-       See footnote,\3\ p.
                                                                                96(02).                7; See footnote,\4\
                                                                                O-3104-83; See
                                                                                footnote,\8\ 3M0222.
                                     GC/MS.................  625.1 \5\.............  6410 B-2000..........  .....................  See footnote,\11\ O-
                                                                                1126-95.
12. Captan.........................  GC....................  617, 608.3............  6630 B-2007..........  D3086-90, D5812-       See footnote,\3\ p.
                                                                                96(02).                7.
13. Carbaryl.......................  TLC...................  ......................  .....................  .....................  See footnote,\3\ p.
                                                                                94, See footnote,\6\
                                                                                p. S60.

                                     HPLC..................  531.1, 632............
                                     HPLC/MS...............  553...................  .....................  .....................  See footnote,\12\ O-
                                                                                2060-01.
                                     GC/MS.................  625.1.................  .....................  .....................  See footnote,\11\ O-
                                                                                1126-95.
14. Carbophenothion................  GC....................  617, 608.3............  6630 B-2007..........  .....................  See footnote,\4\ page
                                                                                27; See footnote,\6\
                                                                                p. S73.
                                     GC/MS.................  625.1.................
15. Chlordane......................  GC....................  617, 608.3............  6630 B-2007 & C-2007.  D3086-90, D5812-       See footnote,\3\ p.
                                                                                96(02).                7; See footnote,\4\
                                                                                O-3104-83; See
                                                                                footnote,\8\ 3M0222.
                                     GC/MS.................  625.1.................  6410 B-2000..........
16. Chloropropham..................  TLC...................  ......................  .....................  .....................  See footnote,\3\ p.
                                                                                104; See
                                                                                footnote,\6\ p. S64.
                                     HPLC..................  632...................
                                     GC/MS.................  625.1.................
17. 2,4-D..........................  GC....................  615...................  6640 B-2006..........  .....................  See footnote,\3\ p.
                                                                                115; See
                                                                                footnote,\4\ O-3105-
                                                                                83.
                                     HPLC/MS...............  ......................  .....................  .....................  See footnote,\12\ O-
                                                                                2060-01.
18. 4,4'-DDD.......................  GC....................  617, 608.3............  6630 B-2007 & C-2007.  D3086-90, D5812-       See footnote,\3\ p.
                                                                                96(02).                7; See footnote,\4\
                                                                                O-3105-83; See
                                                                                footnote,\8\ 3M0222.
                                     GC/MS.................  625.1.................  6410 B-2000..........
19. 4,4'-DDE.......................  GC....................  617, 608.3............  6630 B-2007 & C-2007.  D3086-90, D5812-       See footnote,\3\ p.
                                                                                96(02).                7; See footnote,\4\
                                                                                O-3104-83; See
                                                                                footnote,\8\ 3M0222.
                                     GC/MS.................  625.1.................  6410 B-2000..........  .....................  See footnote,\11\ O-
                                                                                1126-95.
20. 4,4'-DDT.......................  GC....................  617, 608.3............  6630 B-2007 & C-2007.  D3086-90, D5812-       See footnote,\3\ p.
                                                                                96(02).                7; See footnote,\4\
                                                                                O-3104-83; See
                                                                                footnote,\8\ 3M0222.
                                     GC/MS.................  625.1.................  6410 B-2000..........
21. Demeton-O......................  GC....................  614, 622..............  .....................  .....................  See footnote,\3\ p.
                                                                                25; See footnote,\6\
                                                                                p. S51.
                                     GC/MS.................  625.1.................
22. Demeton-S......................  GC....................  614, 622..............  .....................  .....................  See footnote,\3\ p.
                                                                                25; See footnote,\6\
                                                                                p. S51.
                                     GC/MS.................  625.1.................
23. Diazinon.......................  GC....................  507, 614, 622, 1657...  .....................  .....................  See footnote,\3\ p.
                                                                                25; See footnote,\4\
                                                                                O-3104-83; See
                                                                                footnote,\6\ p. S51.
                                     GC/MS.................  525.2, 625.1..........  .....................  .....................  See footnote,\11\ O-
                                                                                1126-95.
24. Dicamba........................  GC....................  615...................  .....................  .....................  See footnote,\3\ p.
                                                                                115.
                                     HPLC/MS...............  ......................  .....................  .....................  See footnote,\12\ O-
                                                                                2060-01.
25. Dichlofenthion.................  GC....................  622.1.................  .....................  .....................  See footnote,\4\ page
                                                                                27; See footnote,\6\
                                                                                p. S73.
26. Dichloran......................  GC....................  608.2, 617, 608.3.....  6630 B-2007..........  .....................  See footnote,\3\ p.
                                                                                7;
27. Dicofol........................  GC....................  617, 608.3............  .....................  .....................  See footnote,\4\ O-
                                                                                3104-83.
28. Dieldrin.......................  GC....................  617, 608.3............  6630 B-2007 & C-2007.  D3086-90, D5812-       See footnote,\3\ p.
                                                                                96(02).                7; See footnote,\4\
                                                                                O-3104-83; See
                                                                                footnote,\8\ 3M0222.
                                     GC/MS.................  625.1.................  6410 B-2000..........  .....................  See footnote,\11\ O-