Edition, U.S. Environmental Protection Agency, Office of Water, Washington, DC, EPA/821/R-02/013.
\26\ USEPA. October 2002. Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Marine and Estuarine Organisms.
  Third Edition. U.S. Environmental Protection Agency, Office of Water, Washington, DC, EPA/821/R-02/014.

                                                  Table IB--List of Approved Inorganic Test Procedures
--------------------------------------------------------------------------------------------------------------------------------------------------------
             Parameter                  Methodology \58\            EPA \52\            Standard methods             ASTM             USGS/AOAC/other
--------------------------------------------------------------------------------------------------------------------------------------------------------
1. Acidity, as CaCO3, mg/L.........  Electrometric endpoint  ......................  2310 B-1997..........  D1067-06.............  I-1020-85.\2\
                                      or phenolphthalein
                                      endpoint.
2. Alkalinity, as CaCO3, mg/L......  Electrometric or        ......................  2320 B-1997..........  D1067-06.............  973.43,\3\ I-1030-
                                      Colorimetric                                                                                85.\2\
                                      titration to pH 4.5,
                                      Manual.
                                     Automatic.............  310.2 (Rev. 1974) \1\.  .....................  .....................  I-2030-85.\2\
3. Aluminum--Total,\4\ mg/L........  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA direct            ......................  3111 D-1999 or E-1999  .....................  I-3051-85.\2\
                                         aspiration \36\.
                                        AA furnace.........  ......................  3113-2004............
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES \36\.......  200.5, Rev. 4.2         3120-1999............  D1976-07.............  I-4471-97.\50\
                                                              (2003); 200.7, Rev.
                                                              4.4 (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14,\3\ I-4471-
                                                                                97.\50\
                                        Direct Current       ......................  .....................  D4190-08.............  See footnote.\34\
                                         Plasma (DCP) \36\.
                                        Colorimetric         ......................  3500-Al B-2001.......
                                         (Eriochrome
                                         cyanine R).
4. Ammonia (as N), mg/L............  Manual distillation     350.1, Rev. 2.0 (1993)  4500-NH3 B-1997......  .....................  973.49.\3\
                                      \6\ or gas diffusion
                                      (pH > 11) followed by
                                      any of the following:
                                        Nesslerization.....  ......................  .....................  D1426-08 (A).........  973.49,\3\ I-3520-
                                                                                85.\2\
                                        Titration..........  ......................  4500-NH3 C-1997......
                                        Electrode..........  ......................  4500-NH3 D-1997 or E-  D1426-08 (B).........
                                                                                1997.
                                        Manual phenate,      ......................  4500-NH3 F-1997......  .....................  See Footnote.\60\
                                         salicylate, or
                                         other substituted
                                         phenols in
                                         Berthelot reaction
                                         based methods.
                                        Automated phenate,   350.1,\30\ Rev. 2.0     4500-NH3 G-1997 4500-  .....................  I-4523-85.\2\
                                         salicylate, or       (1993).                 NH3 H-1997.
                                         other substituted
                                         phenols in
                                         Berthelot reaction
                                         based methods.
                                        Automated electrode  ......................  .....................  .....................  See footnote 7.
                                        Ion Chromatography.  ......................  .....................  D6919-09.............
5. Antimony--Total,\4\ mg/L........  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA direct            ......................  3111 B-1999..........
                                         aspiration \36\.
                                        AA furnace.........  ......................  3113-2004............
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES \36\.......  200.5, Rev. 4.2         3120-1999............  D1976-07.............  I-4471-97.\50\
                                                              (2003); 200.7, Rev.
                                                              4.4 (1994).

                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14,\3\ I-4471-
                                                                                97.\50\
6. Arsenic--Total,\4\ mg/L.........  Digestion \4\ followed  206.5 (Issued
                                      by any of the           1978).\1\
                                      following:
                                        AA gaseous hydride.  ......................  3114 B-2009 or C-2009  D2972-08 (B).........  I-3062-85.\2\
                                        AA furnace.........  ......................  3113-2004............  D2972-08 (C).........  I-4063-98.\49\
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES \36\.......  200.5, Rev. 4.2         3120-1999............  D1976-07.............
                                                              (2003); 200.7, Rev.
                                                              4.4 (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14,\3\ I-4020-05.
                                        Colorimetric (SDDC)  ......................  3500-As B-1997.......  D2972-08 (A).........  I-3060-85.\2\
7. Barium--Total,\4\ mg/L..........  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA direct            ......................  3111 D-1999..........  .....................  I-3084-85.\2\
                                         aspiration \36\.
                                        AA furnace.........  ......................  3113-2004............  D4382-02(07).          .....................
                                        ICP/AES \36\.......  200.5, Rev. 4.2         3120-1999............  .....................  I-4471-97.\50\
                                                              (2003); 200.7, Rev.
                                                              4.4 (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14,\3\ I-4471-
                                                                                97.\50\
                                        DCP \36\...........  ......................  .....................  .....................  See footnote.\34\
8. Beryllium--Total,\4\ mg/L.......  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA direct            ......................  3111 D-1999 or E-1999  D3645-08 (A).........  I-3095-85.\2\
                                         aspiration.
                                        AA furnace.........  ......................  3113-2004............  D3645-08 (B).........
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES............  200.5, Rev. 4.2         3120-1999............  D1976-07.............  I-4471-97.\50\
                                                              (2003); 200.7, Rev.
                                                              4.4 (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14,\3\ I-4471-
                                                                                97.\50\
                                        DCP................  ......................  .....................  D4190-08.............  See footnote.\34\
                                        Colorimetric         ......................  .....................  .....................  See footnote.\61\
                                         (aluminon).
9. Biochemical oxygen demand         Dissolved Oxygen        ......................  5210 B-2001..........  D888-09..............  973.44,\3\ p. 17,\9\
 (BOD5), mg/L.                        Depletion.                                                                                I-1578-78,\8\ See
                                                                                footnote.\10\ \63\
10. Boron--Total,\37\ mg/L.........  Colorimetric            ......................  4500-B B-2000........  .....................  I-3112-85.\2\
                                      (curcumin).
                                        ICP/AES............  200.5, Rev. 4.2         3120-1999............  D1976-07.............  I-4471-97.\50\
                                                              (2003); 200.7, Rev.
                                                              4.4 (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14,\3\ I-4471-
                                                                                97.\50\
                                        DCP................  ......................  .....................  D4190-08.............  See footnote.\34\
11. Bromide, mg/L..................  Electrode.............  ......................  .....................  D1246-05.............  I-1125-85.\2\
                                     Ion Chromatography....  300.0, Rev. 2.1 (1993)  4110 B-2000, C-2000,   D4327-03.............  993.30.\3\
                                                              and 300.1, Rev. 1.0     D-2000.
                                                              (1997).
                                     CIE/UV................  ......................  4140-1997............  D6508-00(05).........  D6508, Rev. 2.\54\
12. Cadmium--Total,\4\ mg/L........  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA direct            ......................  3111 B-1999 or C-1999  D3557-02(07) (A or B)  974.27,\3\ p. 37.\9\,
                                         aspiration \36\.                                                                           I-3135-85 \2\ or
                                                                                I-3136-85.\2\
                                        AA furnace.........  ......................  3113-1999............  D3557-02(07) (D).....  I-4138-89.\51\
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES \36\.......  200.5, Rev. 4.2         3120-1999............  D1976-07.............  I-1472-85 \2\ or
                                                              (2003); 200.7, Rev.                                                   I-4471-97.\50\
                                                              4.4 (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14,\3\ I-4471-
                                                                                97.\50\
                                        DCP \36\...........  ......................  .....................  D4190-08.............  See footnote.\34\
                                        Voltametry \11\....  ......................  .....................  D3557-02(07)(C)......

                                        Colorimetric         ......................  3500 Cd-D 1990.......
                                         (Dithizone).
13. Calcium--Total,\4\ mg/L........  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA direct            ......................  3111 B-1999..........  D511-08(B)...........  I-3152-85.\2\
                                         aspiration.
                                        ICP/AES............  200.5, Rev. 4.2         3120-1999............  .....................  I-4471-97.\50\
                                                              (2003); 200.7, Rev.
                                                              4.4 (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14.\3\
                                        DCP................  ......................  .....................  .....................  See footnote.\34\
                                        Titrimetric (EDTA).  ......................  3500-Ca-1997.........  D511-08(A)...........
                                        Ion Chromatography.  ......................  .....................  D6919-09.............
14. Carbonaceous biochemical oxygen  Dissolved Oxygen        ......................  5210 B-2001..........  D888-09..............  See footnote.\35\
 demand (CBOD5), mg/L.\12\            Depletion with                                                                                \63\
                                      nitrification
                                      inhibitor.
15. Chemical oxygen demand (COD),    Titrimetric...........  410.3 (Rev. 1978) \1\.  5220 B-1997 or C-1997  D1252-06 (A).........  973.46,\3\ p. 17 \9\
 mg/L.                                                                                I-3560-85.\2\
                                     Spectrophotometric,     410.4, Rev. 2.0 (1993)  5220 D-1997..........  D1252-06 (B).........  See footnotes.\13\
                                      manual or automatic.                                                                          \14\
                                                                                I-3561-85.\2\
16. Chloride, mg/L.................  Titrimetric: (silver    ......................  4500-Cl- B-1997......  D512-04 (B)..........  I-1183-85.\2\
                                      nitrate).
                                     (Mercuric nitrate)....  ......................  4500-Cl- C-1997......  D512-04 (A)..........  973.51,\3\ I-1184-
                                                                                85.\2\
                                     Colorimetric: manual..  ......................  .....................  .....................  I-1187-85.\2\
                                     Automated               ......................  4500-Cl- E-1997......  .....................  I-2187-85.\2\
                                      (Ferricyanide).
                                     Potentiometric          ......................  4500-Cl- D-1997......
                                      Titration.
                                     Ion Selective           ......................  .....................  D512-04 (C)..........
                                      Electrode.
                                     Ion Chromatography....  300.0, Rev. 2.1 (1993)  4110 B-2000 or C-2000  D4327-03.............  993.30,\3\ I-2057-
                                                              and 300.1, Rev. 1.0                                                   90.\51\
                                                              (1997).
                                     CIE/UV................  ......................  4140-1997............  D6508-00(05).........  D6508, Rev. 2.\54\
17. Chlorine--Total residual, mg/L.  Amperometric direct...  ......................  4500-Cl D-2000.......  D1253-08.............
                                     Amperometric direct     ......................  4500-Cl E-2000.......
                                      (low level).
                                     Iodometric direct.....  ......................  4500-Cl B-2000.......
                                     Back titration ether    ......................  4500-Cl C-2000.......
                                      end-point \15\.
                                     DPD-FAS...............  ......................  4500-Cl F-2000.......
                                     Spectrophotometric,     ......................  4500-Cl G-2000.......
                                      DPD.
                                     Electrode.............  ......................  .....................  .....................  See footnote.\16\
17A. Chlorine--Free Available, mg/L  Amperometric direct...  ......................  4500-Cl D-2000.......  D1253-08.............
                                     Amperometric direct     ......................  4500-Cl E-2000.......
                                      (low level).
                                     DPD-FAS...............  ......................  4500-Cl F-2000.......
                                     Spectrophotometric,     ......................  4500-Cl G-2000.......
                                      DPD.
18. Chromium VI dissolved, mg/L....  0.45-micron Filtration
                                      followed by any of
                                      the following:
                                        AA chelation-        ......................  3111 C-1999..........  .....................  I-1232-85.\2\
                                         extraction.
                                        Ion Chromatography.  218.6, Rev. 3.3 (1994)  3500-Cr C-2009.......  D5257-03.............  993.23.
                                        Colorimetric         ......................  3500-Cr B-2009.......  D1687-02(07)(A)......  I-1230-85.\2\
                                         (Diphenyl-
                                         carbazide).
19. Chromium--Total,\4\ mg/L.......  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA direct            ......................  3111 B-1999..........  D1687-02(07) (B).....  974.27,\3\ I-3236-
                                         aspiration \36\.                                                                           85.\2\
                                        AA chelation-        ......................  3111 C-1999..........
                                         extraction.
                                        AA furnace.........  ......................  3113-1999............  D1687-02(07)(C)......  I-3233-93.\46\
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES \36\.......  200.5, Rev. 4.2         3120-1999............  D1976-07.............  I-4471-97.\50\
                                                              (2003); 200.7, Rev.
                                                              4.4 (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14,\3\ I-4020-05.
                                        DCP \36\...........  ......................  .....................  D4190-08.............  See footnote.\34\

                                        Colorimetric         ......................  3500-Cr B-2009.......
                                         (Diphenyl-
                                         carbazide).
20. Cobalt--Total,\4\ mg/L.........  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA direct            ......................  3111 B-1999 or C-1999  D3558-08 (A or B)....  p. 37,\9\ I-3239-
                                         aspiration.                                                                                85.\2\
                                        AA furnace.........  ......................  3113-2004............  D3558-08 (C).........  I-4243-89.\51\
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES............  200.7, Rev. 4.4 (1994)  3120-1999............  D1976-07.............  I-4471-97.\50\
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14,\3\ I-4020-05.
                                        DCP................  ......................  .....................  D4190-08.............  See footnote.\34\
21. Color, platinum cobalt units or  Colorimetric (ADMI)...  ......................  .....................  .....................  See footnote.\18\
 dominant wavelength, hue,
 luminance purity.
                                     (Platinum cobalt).....  ......................  2120 B-2001..........  .....................  I-1250-85.\2\
                                     Spectrophotometric....
22. Copper--Total,\4\ mg/L.........  Digestion \4\ followed
                                      by any of the
                                      following:
                                     AA direct               ......................  3111 B-1999 or C-1999  D1688-07 (A or B)....  974.27 \3\ p. 37 \9\
                                      aspiration.\36\                                                                               I-3270-85 \2\ or
                                                                                I-3271-85.\2\
                                        AA furnace.........  ......................  3113-2004............  D1688-07 (C).........  I-4274-89.\51\
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES \36\.......  200.5, Rev. 4.2         3120-1999............  D1976-07.............  I-4471-97.\50\
                                                              (2003); 200.7, Rev.
                                                              4.4 (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14,\3\ I-4020-05
                                        DCP \36\...........  ......................  .....................  D4190-08.............  See footnote.\34\
                                        Colorimetric         ......................  3500-Cu B-1999.......
                                         (Neocuproine).
                                        (Bathocuproine)....  ......................  3500-Cu C-1999.......  .....................  See footnote.\19\
23. Cyanide--Total, mg/L...........  Automated UV digestion/ ......................  .....................  .....................  Kelada-01.\55\
                                      distillation and
                                      Colorimetry.
                                     Segmented Flow          ......................  .....................  D7511-09e2...........
                                      Injection, In-Line
                                      Ultraviolet Digestion
                                      followed by gas
                                      diffusion amperometry.
                                     Manual distillation     335.4, Rev. 1.0 (1993)  4500-CN- B-1999 or C-  D2036-09(A), D7284-08  10-204-00-1-X.\56\
                                      with MgCl2 followed     \57\.                   1999.
                                      by any of the
                                      following:
                                        Flow Injection, gas  ......................  .....................  D2036-09(A) D7284-08.
                                         diffusion
                                         amperometry.
                                        Titrimetric........  ......................  4500-CN- D-1999......  D2036-09(A)..........  p. 22.\9\
                                        Spectrophotometric,  ......................  4500-CN- E-1999......  D2036-09(A)..........  I-3300-85.\2\
                                         manual.
                                        Semi-Automated \20\  335.4, Rev. 1.0 (1993)  .....................  .....................  10-204-00-1-X,\56\ I-
                                                              \57\.                                                                 4302-85.\2\
                                        Ion Chromatography.  ......................  .....................  D2036-09(A)..........
                                        Ion Selective        ......................  4500-CN- F-1999......  D2036-09(A)..........
                                         Electrode.
24. Cyanide-Available, mg/L........  Cyanide Amenable to     ......................  4500-CN- G-1999......  D2036-09(B)..........
                                      Chlorination (CATC);
                                      Manual distillation
                                      with MgCl2 followed
                                      by Titrimetric or
                                      Spectrophotometric.
                                     Flow injection and      ......................  .....................  D6888-09.............  OIA-1677-09.\44\
                                      ligand exchange,
                                      followed by gas
                                      diffusion amperometry
                                      \59\.

                                     Automated Distillation  ......................  .....................  .....................  Kelada-01.\55\
                                      and Colorimetry (no
                                      UV digestion).
24.A Cyanide-Free, mg/L............  Flow Injection,         ......................  .....................  D7237-10.............  OIA-1677-09.\44\
                                      followed by gas
                                      diffusion amperometry.
                                     Manual micro-diffusion  ......................  .....................  D4282-02.............
                                      and colorimetry.
25. Fluoride--Total, mg/L..........  Manual distillation     ......................  4500-F- B-1997.......
                                      \6\ followed by any
                                      of the following:
                                        Electrode, manual..  ......................  4500-F- C-1997.......  D1179-04(B)..........
                                        Electrode,           ......................  .....................  .....................  I-4327-85.\2\
                                         automated.
                                        Colorimetric,        ......................  4500-F- D-1997.......  D1179-04(A)..........
                                         (SPADNS).
                                        Automated            ......................  4500-F- E-1997.......
                                         complexone.
                                        Ion Chromatography.  300.0, Rev. 2.1 (1993)  4110 B-2000 or C-2000  D4327-03.............  993.30.\3\
                                                              and 300.1, Rev. 1.0
                                                              (1997).
                                        CIE/UV.............  ......................  4140-1997............  D6508-00(05).........  D6508, Rev. 2.\54\
26. Gold--Total,\4\ mg/L...........  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA direct            ......................  3111 B-1999..........
                                         aspiration,.
                                        AA furnace,........  231.2 (Rev. 1978) \1\.  3113-2004............
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14.\3\
                                        DCP................  ......................  .....................  .....................  See footnote.\34\
27. Hardness--Total, as CaCO3, mg/L  Automated               130.1 (Issued 1971)
                                      colorimetric,.          \1\.
                                     Titrimetric (EDTA)....  ......................  2340 C-1997..........  D1126-02(07).........  973.5 2B,\3\ I-1338-
                                                                                85.\2\
                                     Ca plus Mg as their     ......................  2340 B-1997..........
                                      carbonates, by
                                      inductively coupled
                                      plasma or AA direct
                                      aspiration. (See
                                      Parameters 13 and 33).
28. Hydrogen ion (pH), pH units....  Electrometric           ......................  4500-H\+\-2000.......  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-1999..........
                                         aspiration.
                                        AA furnace.........  235.2 (Issued
                                                              1978).\1\
                                        ICP/MS.............  ......................  3125-2009............
30. Iron--Total,\4\ mg/L...........  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA direct            ......................  3111 B-1999 or C-1999  D1068-05 (A or B)....  974.27,\3\ I-3381-
                                         aspiration \36\.                                                                           85.\2\
                                        AA furnace.........  ......................  3113-1999............  D1068-05(C)..........
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES \36\.......  200.5, Rev. 4.2         3120-1999............  D1976-07.............  I-4471-97.\50\
                                                              (2003); 200.7, Rev.
                                                              4.4 (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14.\3\
                                        DCP \36\...........  ......................  .....................  D4190-08.............  See footnote.\34\
                                        Colorimetric         ......................  3500-Fe-1997.........  D1068-05 (D).........  See footnote.\22\
                                         (Phenanthroline).
31. Kjeldahl Nitrogen \5\--Total,    Manual digestion \20\   ......................  4500-Norg B-1997 or C- D3590-02(06)(A)......  I-4515-91.\45\
 (as N), mg/L.                        and distillation or                             1997 and 4500-NH3 B-
                                      gas diffusion                                   1997.
                                      followed by any of
                                      the following:
                                        Titration..........  ......................  4500-NH3 C-1997......  .....................  973.48.\3\
                                        Nesslerization.....  ......................  .....................  D1426-08(A)..........
                                        Electrode..........  ......................  4500-NH3 D-1997 or E-  D1426-08(B)..........
                                                                                1997.

                                        Semi-automated       350.1 Rev. 2.0 1993...  4500-NH3 G-1997 4500-
                                         phenate.                                     NH3 H-1997.
                                        Manual phenate,      ......................  4500-NH3 F-1997......  .....................  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 block    351.2, Rev. 2.0 (1993)  4500-Norg D-1997.....  D3590-02(06) (B).....  I-4515-91.\45\
                                      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).
32. Lead--Total,\4\ mg/L...........  Digestion \4\ followed
                                      by any of the
                                      following:
                                     AA direct               ......................  3111 B-1999 or C-1999  D3559-08(A or B).....  974.27,\3\ I-3399-
                                      aspiration.\36\                                                                               85.\2\
                                        AA furnace.........  ......................  3113-1999............  D3559-08(D)..........  I-4403-89.\51\
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES \36\.......  200.5, Rev. 4.2         3120-1999............  D1976-07.............  I-4471-97.\50\
                                                              (2003); 200.7, Rev.
                                                              4.4 (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14,\3\ I-4471-
                                                                                97.\50\
                                        DCP \36\...........  ......................  .....................  D4190-08.............  See footnote.\34\
                                        Voltametry \11\....  ......................  .....................  D3559-08(C)..........
                                        Colorimetric         ......................  3500-Pb B-1997.......
                                         (Dithizone).
33. Magnesium--Total,\4\ mg/L......  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA direct            ......................  3111 B-1999..........  D511-08(B)...........  974.27,\3\ I-3447-
                                         aspiration.                                                                                85.\2\
                                        ICP/AES............  200.5, Rev. 4.2         3120-1999............  D1976-07.............  I-4471-97.\50\
                                                              (2003); 200.7, Rev.
                                                              4.4 (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14.\3\
                                        DCP................  ......................  .....................  .....................  See footnote.\34\
                                        Gravimetric........
                                        Ion Chromatography.  ......................  .....................  D6919-09.............
34. Manganese--Total,\4\ mg/L......  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA direct            ......................  3111 B-1999..........  D858-07(A or B)......  974.27,\3\ I-3454-
                                         aspiration \36\.                                                                           85.\2\
                                        AA furnace.........  ......................  3113-2004............  D858-07(C)...........
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES \36\.......  200.5, Rev. 4.2         3120-1999............  D1976-07.............  I-4471-97.\50\
                                                              (2003); 200.7, Rev.
                                                              4.4 (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14,\3\ I-4471-
                                                                                97.\50\
                                        DCP \36\...........  ......................  .....................  D4190-08.............  See footnote.\34\

                                        Colorimetric         ......................  3500-Mn B-1999.......  .....................  920.203.\3\
                                         (Persulfate).
                                        (Periodate)........  ......................  .....................  .....................  See footnote.\23\
35. Mercury--Total,\4\ mg/L........  Cold vapor, Manual....  245.1, Rev. 3.0 (1994)  3112-2009............  D3223-07.............  977.22,\3\ I-3462-
                                                                                85.\2\
                                     Cold vapor, Automated.  245.2 (Issued 1974)...
                                     Cold vapor atomic       245.7, Rev. 2.0 (2005)  .....................  .....................  I-4464-01.
                                      fluorescence            \17\.
                                      spectrometry (CVAFS).
                                     Purge and Trap CVAFS..  1631E.\43\
                                     ICP/AES \36\..........  200.7, Rev. 4.4 (1994)  3120-1999............  .....................  I-4471-97.\50\
                                     ICP/MS................  ......................  3125-2009............
36. Molybdenum--Total,\4\ mg/L.....  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA direct            ......................  3111 D-1999..........  .....................  I-3490-85.\2\
                                         aspiration.
                                        AA furnace.........  ......................  3113-2004............  .....................  I-3492-96.\47\
                                        ICP/AES............  200.7, Rev. 4.4 (1994)  3120-1999............  D1976-07.............  I-4471-97.\50\
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  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-1999 or C-1999  D1886-08(A or B).....  I-3499-85.\2\
                                         aspiration \36\.
                                        AA furnace.........  ......................  3113-2004............  D1886-08(C)..........  I-4503-89.\51\
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES \36\.......  200.5, Rev. 4.2         3120-1999............  D1976-07.............  I-4471-97.\50\
                                                              (2003); 200.7, Rev.
                                                              4.4 (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14,\3\ I-4020-05.
                                        DCP \36\...........  ......................  .....................  D4190-08.............  See footnote.\34\
38. Nitrate (as N), mg/L...........  Ion Chromatography....  300.0, Rev. 2.1 (1993)  4110 B-2000 or C-2000  D4327-03.............  993.30.\3\
                                                              and 300.1, Rev. 1.0
                                                              (1997).
                                     CIE/UV................  ......................  4140-1997............  D6508-00(05).........  D6508, Rev. 2.\54\
                                     Ion Selective           ......................  4500-NO3- D-2000.....
                                      Electrode.
                                     Colorimetric (Brucine   352.1 \1\.............  .....................  .....................  973.50,\3\ 419D,\1\
                                      sulfate).                                                                                \7\ p. 28.\9\
                                     Nitrate-nitrite N       ......................  .....................  .....................  See footnote.\62\
                                      minus Nitrite N (See
                                      parameters 39 and 40).
39. Nitrate-nitrite (as N), mg/L...  Cadmium reduction,      ......................  4500-NO3- E-2000.....  D3867-04(B)..........
                                      Manual.
                                     Cadmium reduction,      353.2, Rev. 2.0 (1993)  4500-NO3- F-2000.....  D3867-04(A)..........  I-2545-90.\2\
                                      Automated.
                                     Automated hydrazine...  ......................  4500-NO3- H-2000.....
                                     Reduction/Colorimetric  ......................  .....................  .....................  See footnote.\62\
                                     Ion Chromatography....  300.0, Rev. 2.1 (1993)  4110 B-2000 or C-2000  D4327-03.............  993.30.\3\
                                                              and 300.1, Rev. 1.0
                                                              (1997).
                                     CIE/UV................  ......................  4140-1997............  D6508-00(05).........  D6508, Rev. 2.\54\
40. Nitrite (as N), mg/L...........  Spectrophotometric:     ......................  4500-NO2- B-2000.....  .....................  See footnote.\25\
                                      Manual.
                                     Automated               ......................  .....................  .....................  I-4540-85,\2\ See
                                      (Diazotization).                                                                              footnote.\62\
                                     Automated (*bypass      353.2, Rev. 2.0 (1993)  4500-NO3- F-2000.....  D3867-04 (A).........  I-4545-85.\2\
                                      cadmium reduction).
                                     Manual (*bypass         ......................  4500-NO3- E-2000.....  D3867-04 (B).........
                                      cadmium reduction).
                                     Ion Chromatography....  300.0, Rev. 2.1 (1993)  4110 B-2000 or C-2000  D4327-03.............  993.30.\3\
                                                              and 300.1, Rev. 1.0
                                                              (1997).
                                     CIE/UV................  ......................  4140-1997............  D6508-00(05).........  D6508, Rev.2.\54\
41. Oil and grease--Total            Hexane extractable      1664B \42\............  5520 B-2001.\38\
 recoverable, mg/L.                   material (HEM): n-
                                      Hexane extraction and
                                      gravimetry.

                                     Silica gel treated HEM  1664B \42\............  5520 B-2001 \38\ and
                                      (SGT-HEM): Silica gel                           5520 F-2001.\38\
                                      treatment and
                                      gravimetry.
42. Organic carbon--Total (TOC), mg/ Combustion............  ......................  5310 B-2000..........  D7573-09.............  973.47,\3\ p. 14.\24\
 L.
                                     Heated persulfate or    ......................  5310 C 2000 5310 D     D4839-03.............  973.47,\3\ p. 14.\24\
                                      UV persulfate                                   2000.
                                      oxidation.
43. Organic nitrogen (as N), mg/L..  Total Kjeldahl N
                                      (Parameter 31) minus
                                      ammonia N (Parameter
                                      4).
44. Orthophosphate (as P), mg/L....  Ascorbic acid method:
                                        Automated..........  365.1, Rev. 2.0 (1993)  4500-P F-1999 or G-    .....................  973.56,\3\ I-4601-
                                                                                1999.                                         85.\2\
                                        Manual single        ......................  4500-P E-1999........  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-2000 or C-2000  D4327-03.............  993.30.\3\
                                                              and 300.1, Rev. 1.0
                                                              (1997).
                                        CIE/UV.............  ......................  4140-1997............  D6508-00(05).........  D6508, Rev. 2.\54\
45. Osmium--Total,\4\ mg/L.........  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA direct            ......................  3111 D-1999..........
                                         aspiration.
                                        AA furnace.........  252.2 (Issued 1978)
                                                              \1\
46. Oxygen, dissolved, mg/L........  Winkler (Azide          ......................  4500-O B-2001, C-      D888-09(A)...........  973.45B,\3\ I-1575-
                                      modification).                                  2001, D-2001, E-                              78.\8\
                                                                                2001, F-2001.
                                     Electrode.............  ......................  4500-O G-2001........  D888-09(B)...........  I-1576-78.\8\
                                     Luminescence Based      ......................  .....................  D888-09 \68\ (C).....  See footnote \63\
                                      Sensor.                                                                                \68\ See
                                                                                footnote.\64\
47. Palladium--Total,\4\ mg/L......  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA direct            ......................  3111 B-1999..........
                                         aspiration.
                                        AA furnace.........  253.2 \1\ (Issued
                                                              1978).
                                        ICP/MS.............  ......................  3125-2009............
                                        DCP................  ......................  .....................  .....................  See footnote.\34\
48. Phenols, mg/L..................  Manual distillation     420.1 \1\ (Rev. 1978).  5530B-2005...........  D1783-01.............
                                      \26\ followed by any
                                      of the following:
                                        Colorimetric (4AAP)  420.1 \1\ (Rev. 1978).  5530D-2005 \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........  Persulfate digestion    ......................  4500-P B(5)-1999.....  .....................  973.55.\3\
                                      \20\ followed by any
                                      of the following:
                                        Manual.............  365.3 \1\ (Issued       4500-P E-1999........  D515-88(A)...........
                                                              1978).
                                        Automated ascorbic   365.1, Rev. 2.0 (1993)  4500-P F-1999, G-      .....................  973.56,\3\ I-4600-
                                         acid reduction.                              1999, H-1999.                                 85.\2\
                                        ICP/AES \4\ \36\...  200.7, Rev. 4.4 (1994)  3120-1999............  .....................  I-4471-97.\50\
                                        Semi-automated       365.4 \1\ (Issued       .....................  D515-88(B)...........  I-4610-91.\48\
                                         block digestor       1974).
                                         (TKP digestion).
51. Platinum--Total,\4\ mg/L.......  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA direct            ......................  3111 B-1999..........
                                         aspiration.
                                        AA furnace.........  255.2.\1\
                                        ICP/MS.............  ......................  3125-2009............
                                        DCP................  ......................  .....................  .....................  See footnote.\34\
52. Potassium--Total,\4\ mg/L......  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA direct            ......................  3111 B-1999..........  .....................  973.53,\3\ I-3630-
                                         aspiration.                                                                                85.\2\

                                        ICP/AES............  200.7, Rev. 4.4 (1994)  3120-1999............
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14.\3\
                                        Flame photometric..  ......................  3500-K B-1997........
                                        Electrode..........  ......................  3500-K C-1997........
                                        Ion Chromatography.  ......................  .....................  D6919-09.............
53. Residue--Total, mg/L...........  Gravimetric, 103-       ......................  2540 B-1997..........  .....................  I-3750-85.\2\
                                      105[deg].
54. Residue--filterable, mg/L......  Gravimetric, 180[deg].  ......................  2540 C-1997..........  D5907-03.............  I-1750-85.\2\
55. Residue--non-filterable (TSS),   Gravimetric, 103-       ......................  2540 D-1997..........  D5907-03.............  I-3765-85.\2\
 mg/L.                                105[deg] post washing
                                      of residue.
56. Residue--settleable, mg/L......  Volumetric, (Imhoff     ......................  2540 F-1997..........
                                      cone), or gravimetric.
57. Residue--Volatile, mg/L........  Gravimetric, 550[deg].  160.4 \1\.............  2540-E-1997..........  .....................  I-3753-85.\2\
58. Rhodium--Total,\4\ mg/L........  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA direct            ......................  3111 B-1999..........
                                         aspiration, or.
                                        AA furnace.........  265.2.\1\
                                        ICP/MS.............  ......................  3125-2009............
59. Ruthenium--Total,\4\ mg/L......  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA direct            ......................  3111 B-1999..........
                                         aspiration, or.
                                        AA furnace.........  267.2.\1\
                                        ICP/MS.............  ......................  3125-2009............
60. Selenium--Total,\4\ mg/L.......  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA furnace.........  ......................  3113-2004............  D3859-08 (B).........  I-4668-98.\49\
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES \36\.......  200.5, Rev. 4.2         3120-1999............  D1976-07.............
                                                              (2003); 200.7, Rev.
                                                              4.4 (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14,\3\ I-4020-05
                                        AA gaseous hydride.  ......................  3114 B-2009, or C-     D3859-08 (A).........  I-3667-85.\2\
                                                                                2009.
61. Silica--Dissolved,\37\ mg/L....  0.45 micron filtration
                                      followed by any of
                                      the following:
                                        Colorimetric,        ......................  4500-SiO2 C-1997.....  D859-05..............  I-1700-85.\2\
                                         Manual.
                                        Automated            ......................  4500-SiO2 E-1997 or F- .....................  I-2700-85.\2\
                                         (Molybdosilicate).                           1997.
                                        ICP/AES............  200.5, Rev. 4.2         3120-1999............  .....................  I-4471-97.\50\
                                                              (2003); 200.7, Rev.
                                                              4.4 (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14.\3\
62. Silver--Total,4 31 mg/L........  Digestion 4 29
                                      followed by any of
                                      the following:
                                        AA direct            ......................  3111 B-1999 or C-1999  .....................  974.27,\3\ p. 37,\9\
                                         aspiration.                                                                                I-3720-85.\2\
                                        AA furnace.........  ......................  3113 -1999...........  .....................  I-4724-89.\51\
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES............  200.5, Rev. 4.2         3120-1999............  D1976-07.............  I-4471-97.\50\
                                                              (2003); 200.7, Rev.
                                                              4.4 (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  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-1999..........  .....................  973.54,\3\ I-3735-
                                         aspiration.                                                                                85.\2\
                                        ICP/AES............  200.5, Rev. 4.2         3120-1999............  .....................  I-4471-97.\50\
                                                              (2003); 200.7, Rev.
                                                              4.4 (1994).

                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14.\3\
                                        DCP................  ......................  .....................  .....................  See footnote.\34\
                                        Flame photometric..  ......................  3500-Na B-1997.......
                                        Ion Chromatography.  ......................  .....................  D6919-09.............
64. Specific conductance, micromhos/ Wheatstone bridge.....  120.1 \1\ (Rev. 1982).  2510 -1997...........  D1125-99 (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-SO42- F-1997 or
                                                                                G-1997.
                                     Gravimetric...........  ......................  4500-SO42- C-1997 or   .....................  925.54.\3\
                                                                                D-1997.
                                     Turbidimetric.........  ......................  4500-SO42- E-1997....  D516-07..............
                                     Ion Chromatography....  300.0, Rev. 2.1 (1993)  4110 B-2000 or C-2000  D4327-03.............  993.30,\3\ I-4020-05.
                                                              and 300.1, Rev. 1.0
                                                              (1997).
                                     CIE/UV................  ......................  4140-1997............  D6508-00(05).........  D6508, Rev. 2.\54\
66. Sulfide (as S), mg/L...........  Sample Pretreatment...  ......................  4500-S 2- B, C-2000..
                                     Titrimetric (iodine)..  ......................  4500-S 2- F-2000.....  .....................  I-3840-85.\2\
                                     Colorimetric            ......................  4500-S 2- D-2000.....
                                      (methylene blue).
                                     Ion Selective           ......................  4500-S 2- G-2000.....  D4658-08.............
                                      Electrode.
67. Sulfite (as SO3), mg/L.........  Titrimetric (iodine-    ......................  4500-SO32- B-2000....
                                      iodate).
68. Surfactants, mg/L..............  Colorimetric            ......................  5540 C-2000..........  D2330-02.............
                                      (methylene blue).
69. Temperature, [deg]C............  Thermometric..........  ......................  2550 B-2000..........  .....................  See footnote.\32\
70. Thallium--Total,\4\ mg/L.......  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA direct            ......................  3111 B-1999..........
                                         aspiration.
                                        AA furnace.........  279.2 \1\ (Issued       3113-2004............
                                                              1978).
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES............  200.7, Rev. 4.4 (1994)  3120-1999............  D1976-07.............
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  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-1999..........  .....................  I-3850-78.\8\
                                         aspiration.
                                        AA furnace.........  ......................  3113-2004............
                                        STGFAA.............  200.9, Rev. 2.2 (1994)
                                        ICP/AES............  200.5, Rev. 4.2
                                                              (2003); 200.7, Rev.
                                                              4.4 (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14.\3\
72. Titanium--Total,\4\ mg/L.......  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA direct            ......................  3111 D-1999..........
                                         aspiration.
                                        AA furnace.........  283.2 \1\(Issued 1978)
                                        DCP................  ......................  .....................  .....................  See footnote.\34\
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14.\3\
73. Turbidity, NTU \53\............  Nephelometric.........  180.1, Rev. 2.0 (1993)  2130-2001............  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-1999..........
                                         aspiration.
                                        AA furnace.........  ......................  3113-2004............  D3373-03(07).........
                                        ICP/AES............  200.5, Rev. 4.2         3120-1999............  D1976-07.............  I-4471-97.\50\
                                                              (2003); 200.7, Rev.
                                                              4.4 (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14,\3\ I-4020-05.
                                        DCP................  ......................  .....................  D4190-08.............  See footnote.\34\

                                        Colorimetric         ......................  3500-V B-1997........
                                         (Gallic Acid).
75. Zinc--Total,\4\ mg/L...........  Digestion \4\ followed
                                      by any of the
                                      following:
                                        AA direct            ......................  3111 B-1999 or C-1999  D1691-02(07) (A or B)  974.27,\3\ p. 37,\9\
                                         aspiration \36\.                                                                           I-3900-85.\2\
                                        AA furnace.........  289.2\1\ (Issued 1978)
                                        ICP/AES \36\.......  200.5, Rev. 4.2         3120-1999............  D1976-07.............  I-4471-97.\50\
                                                              (2003); 200.7, Rev.
                                                              4.4 (1994).
                                        ICP/MS.............  200.8, Rev. 5.4 (1994)  3125-2009............  D5673-05.............  993.14,\3\ I-4020-05.
                                        DCP \36\...........  ......................  .....................  D4190-08.............  See footnote.\34\
                                        Colorimetric
                                         (Dithizone).
                                        (Zincon)...........  ......................  3500-Zn-1997.........  .....................  See footnote.\33\
76. Acid Mine Drainage.............  ......................  1627..................
--------------------------------------------------------------------------------------------------------------------------------------------------------
Table 1B Notes:
\1\ ``Methods for Chemical Analysis of Water and Wastes,'' Environmental Protection Agency, Environmental Monitoring Systems Laboratory--Cincinnati
  (EMSL-CI), EPA-600/4-79-020 (NTIS PB 84-128677), Revised March 1983 and 1979 where applicable.
\2\ Fishman, M. J., et al. ``Methods for Analysis of Inorganic Substances in Water and Fluvial Sediments,'' U.S. Department of the Interior, Techniques
  of Water-Resource Investigations of the U.S. Geological Survey, Denver, CO, Revised 1989, unless otherwise stated.
\3\ ``Official Methods of Analysis of the Association of Official Analytical Chemists,'' Methods Manual, Sixteenth Edition, 4th Revision, 1998.
\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 the 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\ Ammonia, Automated Electrode Method, Industrial Method Number 379-75 WE, dated February 19, 1976, Bran & Luebbe (Technicon) Auto Analyzer II, Bran &
  Luebbe Analyzing Technologies, Inc., Elmsford, NY 10523.
\8\ The approved method is that cited in ``Methods for Determination of Inorganic Substances in Water and Fluvial Sediments'', USGS TWRI, Book 5,
  Chapter A1 (1979).
\9\ American National Standard on Photographic Processing Effluents, April 2, 1975. Available from ANSI, 25 West 43rd St., New York, NY 10036.
\10\ In-Situ Method 1003-8-2009, ``Biochemical Oxygen Demand (BOD) Measurement by Optical Probe''. Available from In-Situ, Incorporated, 221 E. Lincoln
  Avenue, Ft. Collins, CO 80524, Telephone:<PHONE_NUMBER>.
\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, Oceanography International Corporation, 1978, 151 Graham Road, P.O. Box 9010, College Station, TX 77842.
\14\ Chemical Oxygen Demand, Method 8000, Hach Handbook of Water Analysis, 1979, Hach Chemical Company, P.O. Box 389, Loveland, CO 80537.
\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, 840 Memorial Drive, Cambridge, MA
  02138. 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, Rev. 2.0, ``Mercury in Water by Cold Vapor Atomic Fluorescence Spectrometry,'' February 2005, EPA-821-R-05-001, available from the
  U.S. EPA Sample Control Center (operated by CSC), 6101 Stevenson Avenue, Alexandria, VA 22304, Telephone:<PHONE_NUMBER>, Fax:<PHONE_NUMBER>.
\18\ National Council of the Paper Industry for Air and Stream Improvement, Inc., Technical Bulletin 253, December 1971.
\19\ Copper, Biocinchoinate Method, Method 8506, Hach Handbook of Water Analysis, 1979, Hach Chemical Company, P.O. Box 389, Loveland, CO 80537.
\20\ When using a method with block digestion, this treatment is not required.
\21\ Hydrogen ion (pH) Automated Electrode Method, Industrial Method Number 378-75WA, October 1976, Bran & Luebbe (Technicon) Autoanalyzer II. Bran &
  Luebbe Analyzing Technologies, Inc., Elmsford, NY 10523.

\22\ Iron, 1,10-Phenanthroline Method, Method 8008, 1980, Hach Chemical Company, P.O. Box 389, Loveland, CO 80537.
\23\ Manganese, Periodate Oxidation Method, Method 8034, Hach Handbook of Wastewater Analysis, 1979, pages 2-113 and 2-117, Hach Chemical Company,
  Loveland, CO 80537.
\24\ Wershaw, R. L., et al., ``Methods for Analysis of Organic Substances in Water,'' Techniques of Water-Resources Investigation of the U.S. Geological
  Survey, Book 5, Chapter A3, (1972 Revised 1987) p. 14.
\25\ Nitrogen, Nitrite, Method 8507, Hach Chemical Company, P.O. Box 389, Loveland, CO 80537.
\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\ R.F. Addison and R. G. Ackman, ``Direct Determination of Elemental Phosphorus by Gas-Liquid Chromatography,'' Journal of Chromatography, Vol. 47,
  No. 3, pp. 421-426, 1970.
\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\ Stevens, H. H., Ficke, J. F., and Smoot, G. F., ``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.
\33\ Zinc, Zincon Method, Method 8009, Hach Handbook of Water Analysis, 1979, pages 2-231 and 2-333, Hach Chemical Company, Loveland, CO 80537.
\34\ ``Direct Current Plasma (DCP) Optical Emission Spectrometric Method for Trace Elemental Analysis of Water and Wastes, Method AES0029,'' 1986--
  Revised 1991, Thermo Jarrell Ash Corporation, 27 Forge Parkway, Franklin, MA 02038.
\35\ In-Situ Method 1004-8-2009, ``Carbonaceous Biochemical Oxygen Demand (CBOD) Measurement by Optical Probe''. Available from In-Situ, Incorporated,
  221 E. Lincoln Avenue, Ft. Collins, CO 80524, Telephone:<PHONE_NUMBER>.
\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'', CEM Corporation, P.O. Box 200, Matthews, NC 28106-0200, April 16, 1992. Available from the 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 Method 1664B). Use of other extraction
  solvents is prohibited.
\39\ Nitrogen, Total Kjeldahl, Method PAI-DK01 (Block Digestion, Steam Distillation, Titrimetric Detection), revised 12/22/94, OI Analytical/ALPKEM,
  P.O. Box 9010, College Station, TX 77842.
\40\ Nitrogen, Total Kjeldahl, Method PAI-DK02 (Block Digestion, Steam Distillation, Colorimetric Detection), revised 12/22/94, OI Analytical/ALPKEM,
  P.O. Box 9010, College Station, TX 77842.
\41\ Nitrogen, Total Kjeldahl, Method PAI-DK03 (Block Digestion, Automated FIA Gas Diffusion), revised 12/22/96, OI Analytical/ALPKEM, P.O. Box 9010,
  College Station, TX 77842.
\42\ Method 1664, Revision B is the revised version of EPA Method 1664A.
\43\ USEPA. 2001. Method 1631, Revision E, ``Mercury in Water by Oxidation, Purge and Trap, and Cold Vapor Atomic Fluorescence Spectrometry'' September
  2002, Office of Water, U.S. Environmental Protection Agency (EPA-821-R-02-024). The application of clean techniques described in EPA's draft 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\ Available Cyanide, Method OIA-1677-09, ``Available Cyanide by Flow Injection, Ligand Exchange, and Amperometry,'' ALPKEM, A Division of OI
  Analytical, P.O. Box 9010, College Station, TX 77842-9010.
\45\ ``Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of Ammonia Plus Organic Nitrogen by a Kjeldahl
  Digestion Method,'' Open File Report (OFR) 00-170.
\46\ ``Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of Chromium in Water by Graphite Furnace
  Atomic Absorption Spectrophotometry,'' Open File Report (OFR) 93-449.
\47\ ``Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of Molybdenum by Graphite Furnace Atomic
  Absorption Spectrophotometry,'' Open File Report (OFR) 97-198.
\48\ ``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'' Open File Report (OFR) 92-146.
\49\ ``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'' Open File Report (OFR) 98-639.
\50\ ``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,'' Open File Report (OFR) 98-165.
\51\ ``Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory--Determination of Inorganic and Organic Constituents in Water
  and Fluvial Sediment,'' Open File Report (OFR) 93-125.
\52\ Unless otherwise indicated, all EPA methods, excluding EPA Method 300.1, are published in ``Methods for the Determination of Metals in
  Environmental Samples,'' Supplement I, National Exposure Risk Laboratory-Cincinnati (NERL-CI), EPA/600/R-94/111, May 1994; and ``Methods for the
  Determination of Inorganic Substances in Environmental Samples,'' NERL-CI, EPA/600/R-93/100, August, 1993. EPA Method 300.1 is available from http://
  www.epa.gov/safewater/methods/pdfs/met300.pdf.
\53\ Styrene divinyl benzene beads (e.g., AMCO-AEPA-1 or equivalent) and stabilized formazin (e.g., Hach StablCalTM or equivalent) are acceptable
  substitutes for formazin.
\54\ Method D6508, Rev. 2, ``Test Method for Determination of Dissolved Inorganic Anions in Aqueous Matrices Using Capillary Ion Electrophoresis and
  Chromate Electrolyte,'' available from Waters Corp, 34 Maple St., Milford, MA, 01757, Telephone: 508/482-2131, Fax: 508/482-3625.
\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, National Technical Information Service (NTIS), 5285 Port Royal Road, Springfield, VA 22161 [Order Number PB 2001-108275]. 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'' is available from Lachat Instruments 6645 W. Mill Road, Milwaukee, WI 53218, Telephone:<PHONE_NUMBER>.

\57\ When using sulfide removal test procedures described in Method 335.4, 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 Methods OIA-1677-09 or 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, C.J. Patton and S.R. Crouch, Anal. Chem.
  (1977) 49, 464-469. These reaction parameters increase to pH >12.6 and 665 nm when salicylate is used as the color reagent--see, M.D. Krom, Analyst
  (1980) 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\ Systea Easy (1-Reagent) Nitrate Method, February 4, 2009. Available at http://www.nemi.gov or from Systea Scientific, LLC., 900 Jorie Blvd., Suite
  35, Oak Brook, IL 60523.
\63\ Hach Method 10360, ``Luminescence Measurement of Dissolved Oxygen (LDO[supreg]) in Water and Wastewater, Revision 1.1 dated January 4, 2006''.
  Available from Hach Company, 5600 Lindbergh Drive, Loveland, CO 80539, Telephone:<PHONE_NUMBER>.
\64\ In-Situ Method 1002-8-2009, ``Dissolved Oxygen (DO) Measurement by Optical Probe'', 1003-8-2009. Available from In-Situ, Incorporated, 221 E.
  Lincoln Avenue, Ft. Collins, CO 80524, Telephone:<PHONE_NUMBER>.
\65\ Mitchell Method M5331, ``Determination of Turbidity by Nephlometry'', Revision 1.0, July 31, 2008. Available from Leck Mitchell, Ph.D., P.E., 656
  Independence Valley Drive, Grand Junction Colorado 81507, Phone:<PHONE_NUMBER>.
\66\ Mitchell Method M5271, ``Determination of Turbidity by Nephlometry'', Revision 1.0, July 31, 2008. Available from Leck Mitchell, Ph.D., P.E., 656
  Independence Valley Drive, Grand Junction Colorado 81507, Phone:<PHONE_NUMBER>.
\67\ Thermo Scientific's Orion Method AQ4500, Revision 5, March 12, 2009, ``Determination of Turbidity by Nephlometry''. Available from Thermo
  Scientific, 166 Cummings Center, Beverly, MA 01915, Phone: 1-800-225-1480, http://www.thermo.com.
\68\ This method may be used to measure dissolved oxygen when performing methods approved in Table 1B for measurement of biochemical oxygen demand for
  compliance monitoring under the Clean Water Act.

                                     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, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
                                     HPLC..................  610...................  6440 B-00............  D4657-92 (99)........
2. Acenaphthylene..................  GC....................  610...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
                                     HPLC..................  610...................  6440 B-00............  D4657-92 (99)........
3. Acrolein........................  GC....................  603...................
                                     GC/MS.................  624,\4\ 1624B.........
4. Acrylonitrile...................  GC....................  603...................
                                     GC/MS.................  624,\4\ 1624B.........
5. Anthracene......................  GC....................  610...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
                                     HPLC..................  610...................  6440B-00.............  D4657-92 (99)........
6. Benzene.........................  GC....................  602...................  6200 C-97............
                                     GC/MS.................  624, 1624B............  6200 B-97............
7. Benzidine.......................  Spectrophotometric....  ......................  .....................  .....................  See footnote,\3\ p.1.
                                     GC/MS.................  625,\5\ 1625B.........  6410 B-00............
                                     HPLC..................  605...................
8. Benzo(a)anthracene..............  GC....................  610...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
                                     HPLC..................  610...................  6440 B-00............  D4657-92 (99)........
9. Benzo(a)pyrene..................  GC....................  610...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
                                     HPLC..................  610...................  6440 B-00............  D4657-92 (99)........
10. Benzo(b)fluoranthene...........  GC....................  610...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
                                     HPLC..................  610...................  6440 B-00............  D4657-92 (99)........
11. Benzo(g,h,i)perylene...........  GC....................  610...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
                                     HPLC..................  610...................  6440 B-00............  D4657-92 (99)........
12. Benzo(k)fluoranthene...........  GC....................  610...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
                                     HPLC..................  610...................  6440 B-00............  D4657-92 (99)........
13. Benzylchloride.................  GC....................  ......................  .....................  .....................  See footnote,\3\ p.
                                                                                130.

                                     GC/MS.................  ......................  .....................  .....................  See footnote,\6\ p.
                                                                                S102.
14. Butyl benzyl phthalate.........  GC....................  606...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
15. Bis(2-chloroethoxy) methane....  GC....................  611...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
16. Bis(2-chloroethyl) ether.......  GC....................  611...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
17. Bis(2-ethylhexyl) phthalate....  GC....................  606...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
18. Bromodichloromethane...........  GC....................  601...................  6200 C-97............
                                     GC/MS.................  624, 1624B............  6200 B-97............
19. Bromoform......................  GC....................  601...................  6200 C-97............
                                     GC/MS.................  624, 1624B............  6200 B-97............
20. Bromomethane...................  GC....................  601...................  6200 C-97............
                                     GC/MS.................  624, 1624B............  6200 B-97............
21. 4-Bromophenyl phenyl ether.....  GC....................  611...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
22. Carbon tetrachloride...........  GC....................  601...................  6200 C-97............  .....................  See footnote,\3\ p.
                                                                                130.
                                     GC/MS.................  624, 1624B............  6200 B-97............
23. 4-Chloro-3-methylphenol........  GC....................  604...................  6420 B-00............
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
24. Chlorobenzene..................  GC....................  601, 602..............  6200 C-97............  .....................  See footnote,\3\ p.
                                                                                130.
                                     GC/MS.................  624, 1624B............  6200 B-97............
25. Chloroethane...................  GC....................  601...................  6200 C-97............
                                     GC/MS.................  624, 1624B............  6200 B-97............
26. 2-Chloroethylvinyl ether.......  GC....................  601...................
                                     GC/MS.................  624, 1624B............
27. Chloroform.....................  GC....................  601...................  6200 C-97............  .....................  See footnote,\3\ p.
                                                                                130.
                                     GC/MS.................  624, 1624B............  6200 B-97............
28. Chloromethane..................  GC....................  601...................  6200 C-97............
                                     GC/MS.................  624, 1624B............  6200 B-97............
29. 2-Chloronaphthalene............  GC....................  612...................  6410 B-00............
                                     GC/MS.................  625, 1625B............  .....................  .....................  See footnote,\9\ p.
                                                                                27.
30. 2-Chlorophenol.................  GC....................  604...................  6420 B-00............
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
31. 4-Chlorophenyl phenyl ether....  GC....................  611...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
32. Chrysene.......................  GC....................  610...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
                                     HPLC..................  610...................  6440 B-00............  D4657-92 (99)........
33. Dibenzo(a,h)anthracene.........  GC....................  610...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
                                     HPLC..................  610...................  6440 B-00............  D4657-92 (99)........
34. Dibromochloromethane...........  GC....................  601...................  6200 C-97............
                                     GC/MS.................  624, 1624B............  6200 B-97............
35. 1,2-Dichlorobenzene............  GC....................  601,602...............  6200 C-97............
                                     GC/MS.................  624, 1625B............  6200 B-97............  .....................  See footnote,\9\ p.
                                                                                27.
36. 1,3-Dichlorobenzene............  GC....................  601, 602..............  6200 C-97............
                                     GC/MS.................  624, 1625B............  6200 B-97............  .....................  See footnote,\9\ p.
                                                                                27.
37. 1,4-Dichlorobenzene............  GC....................  601, 602..............  6200 C-97............
                                     GC/MS.................  624, 1625B............  6200 B-97............  .....................  See footnote,\9\ p.
                                                                                27.
38. 3,3-Dichlorobenzidine..........  GC/MS.................   625, 1625B...........  6410 B-00............
                                     HPLC..................  605...................

39. Dichlorodifluoromethane........  GC....................  601...................
                                     GC/MS.................  ......................  6200 C-97............
40. 1,1-Dichloroethane.............  GC....................  601...................  6200 C-97............
                                     GC/MS.................  624, 1624B............  6200 B-97............
41. 1,2-Dichloroethane.............  GC....................  601...................  6200 C-97............
                                     GC/MS.................  624, 1624B............  6200 B-97............
42. 1,1-Dichloroethene.............  GC....................  601...................  6200 C-97............
                                     GC/MS.................  624, 1624B............  6200 B-97............
43. trans-1,2-Dichloroethene.......  GC....................  601...................  6200 C-97............
                                     GC/MS.................  624, 1624B............  6200 B-97............
44. 2,4-Dichlorophenol.............  GC....................  604...................  6420 B-00............
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
45. 1,2-Dichloropropane............  GC....................  601...................  6200 C-97............
                                     GC/MS.................  624, 1624B............  6200 B-97............
46. cis-1,3-Dichloropropene........  GC....................  601...................  6200 C-97............
                                     GC/MS.................  624, 1624B............  6200 B-97............
47. trans-1,3-Dichloropropene......  GC....................  601...................  6200 C-97............
                                     GC/MS.................  624, 1624B............  6200 B-97............
48. Diethyl phthalate..............  GC....................  606...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
49. 2,4-Dimethylphenol.............  GC....................  604...................  6420 B-00............
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
50. Dimethyl phthalate.............  GC....................  606...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
51. Di-n-butyl phthalate...........  GC....................  606...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
52. Di-n-octyl phthalate...........  GC....................  606...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
53. 2,3-Dinitrophenol..............  GC....................  604...................  6420 B-00............
                                     GC/MS.................  625, 1625B............  6410 B-00............
54. 2,4-Dinitrotoluene.............  GC....................  609...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
55. 2,6-Dinitrotoluene.............  GC....................  609...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  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-97............
                                     GC/MS.................  624, 1624B............  6200 B-97............
58. Fluoranthene...................  GC....................  610...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
                                     HPLC..................  610...................  6440 B-00............  D4657-92 (99)........
59. Fluorene.......................  GC....................  610...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
                                     HPLC..................  610...................  6440 B-00............  D4657-92 (99)........
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-                   GC/MS.................  1613B.................
 Heptachlorodibenzo-p-dioxin.
63. Hexachlorobenzene..............  GC....................  612...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
64. Hexachlorobutadiene............  GC....................  612...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
65. Hexachlorocyclopentadiene......  GC....................  612...................
                                     GC/MS.................  625,\5\ 1625B.........  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
66. 1,2,3,4,7,8-                     GC/MS.................  1613B.................
 Hexachlorodibenzofuran.
67. 1,2,3,6,7,8-                     GC/MS.................  1613B.................
 Hexachlorodibenzofuran.
68. 1,2,3,7,8,9-                     GC/MS.................  1613B.................
 Hexachlorodibenzofuran.

69. 2,3,4,6,7,8-                     GC/MS.................  1613B.................
 Hexachlorodibenzofuran.
70. 1,2,3,4,7,8-Hexachlorodibenzo-p- GC/MS.................  1613B.................
 dioxin.
71. 1,2,3,6,7,8-Hexachlorodibenzo-p- GC/MS.................  1613B.................
 dioxin.
72. 1,2,3,7,8,9-Hexachlorodibenzo-p- GC/MS.................  1613B.................
 dioxin.
73. Hexachloroethane...............  GC....................  612...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
74. Ideno(1,2,3-cd) pyrene.........  GC....................  610...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
                                     HPLC..................  610...................  6440 B-00............  D4657-92 (99)........
75. Isophorone.....................  GC....................  609...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
76. Methylene chloride.............  GC....................  601...................  6200 C-97............  .....................  See footnote,\3\ p.
                                                                                130.
                                     GC/MS.................  624, 1624B............  6200 B-97............
77. 2-Methyl-4,6-dinitrophenol.....  GC....................  604...................  6420 B-00............
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
78. Naphthalene....................  GC....................  610...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
                                     HPLC..................  610...................  6440 B-00............
79. Nitrobenzene...................  GC....................  609...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
                                     HPLC..................  ......................  .....................  D4657-92 (99)........
80. 2-Nitrophenol..................  GC....................  604...................  6420 B-00............
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
81. 4-Nitrophenol..................  GC....................  604...................  6420 B-00............
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
82. N-Nitrosodimethylamine.........  GC....................  607...................
                                     GC/MS.................  625 \5\, 1625B........  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
83. N-Nitrosodi-n-propylamine......  GC....................  607...................
                                     GC/MS.................   625\5\, 1625B........  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
84. N-Nitrosodiphenylamine.........  GC....................  607...................
                                     GC/MS.................  625 \5\, 1625B........  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
85. Octachlorodibenzofuran.........  GC/MS.................  1613B \10\............
86. Octachlorodibenzo-p-dioxin.....  GC/MS.................  1613B \10\............
87. 2,2'-Oxybis(2-chloropropane)     GC....................  611...................
 [also known as bis(2-
 chloroisopropyl) ether].
                                     GC/MS.................  625, 1625B............  6410 B-00............
88. PCB-1016.......................  GC....................  608...................  .....................  .....................  See footnote,\3\ p.
                                                                                43; See footnote.\8\
                                     GC/MS.................  625...................  6410 B-00............
89. PCB-1221.......................  GC....................  608...................  .....................  .....................  See footnote,\3\ p.
                                                                                43; See footnote.\8\
                                     GC/MS.................  625...................  6410 B-00............
90. PCB-1232.......................  GC....................  608...................  .....................  .....................  See footnote,\3\ p.
                                                                                43; See footnote.\8\
                                     GC/MS.................  625...................  6410 B-00............
91. PCB-1242.......................  GC....................  608...................  .....................  .....................  See footnote,\3\ p.
                                                                                43; See footnote.\8\
                                     GC/MS.................  625...................  6410 B-00............
92. PCB-1248.......................  GC....................  608...................
                                     GC/MS.................  625...................  6410 B-00............
93. PCB-1254.......................  GC....................  608...................  .....................  .....................  See footnote,\3\ p.
                                                                                43; See footnote.\8\
                                     GC/MS.................  625...................  6410 B-00............

94. PCB-1260.......................  GC....................  608...................  .....................  .....................  See footnote,\3\ p.
                                                                                43; See
                                                                                footnote.\8\.
                                     GC/MS.................  625...................  6410 B-00............
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,-Pentachlorodibenzo-p- GC/MS.................  1613B.................
 dioxin.
98. Pentachlorophenol..............  GC....................  604...................  6420 B-00............  .....................  See footnote,\3\ p.
                                                                                140.
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
99. Phenanthrene...................  GC....................  610...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
                                     HPLC..................  610...................  6440 B-00............  D4657-92 (99)........
100. Phenol........................  GC....................  604...................  6420 B-00............
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
101. Pyrene........................  GC....................  610...................
                                     GC/MS.................  625, 1625B............  6410 B-00............  .....................  See footnote,\9\ p.
                                                                                27.
                                     HPLC..................  610...................  6440 B-00............  D4657-92 (99)........
102. 2,3,7,8-Tetra-                  GC/MS.................  1613B.................
 chlorodibenzofuran.
103. 2,3,7,8-Tetra-chlorodibenzo-p-  GC/MS.................  613, 625,\5a\ 1613B...
 dioxin.
104. 1,1,2,2-Tetra-chloro ethane...  GC....................  601...................  6200 C-97............  .....................  See footnote,\3\ p.
                                                                                130.
                                     GC/MS.................  624, 1624B............  6200 B-97............
105. Tetrachloroethene.............  GC....................  601...................  6200 C-97............  .....................  See footnote,\3\ p.
                                                                                130.
                                     GC/MS.................  624, 1624B............  6200 B-97............
106. Toluene.......................  GC....................  602...................  6200 C-97............
                                     GC/MS.................  624, 1624B............  6200 B-97............