Title 40 -- Protection of Environment

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§131.38 Establishment of Numeric Criteria for priority toxic pollutants for the State of California.

(b)(1) *    *    *

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                                     A                                            B  Freshwater             C  Saltwater        D  Human health (10[SU]-
-------------------------------------------------------------------------------------------------------------------------------     6[/SU]) risk for
                                                                                                                                    carcinogens)  For
                                                                             Criterion    Criterion    Criterion    Criterion        consumption of:
                                                                              maximum     continous     maximum     continious -------------------------
                          # Compound                           CAS  number   conc. (mg/   conc. (mg/   conc. (mg/   conc. (mg/  Water &   Organisms
                                                                             L)[SU]d[/    L)[SU]d[/    L)[SU]d[/    L)[SU]d[/     organisms   only  (mg/
                                                                              SU]  B1      SU]  B2      SU]  C1      SU]  C2     (mg/L)  D1     L)  D2
--------------------------------------------------------------------------------------------------------------------------------------------------------
 
                                                                      * * * * * * *
23. Chlorodibromomethane.....................................       124481  ...........  ...........  ...........  ...........    [SU]a,c[/    [SU]a,c[/
                                                                                                                                   SU] 0.41      SU] 34
                                                                     * * * * * * *
67. Bis(2-Chloroisopropyl)Ether..............................       108601  ...........  ...........  ...........  ...........   [SU]a[/SU]    [SU]a,t[/
                                                                                                                                      1,400  SU] 170,000
 
                                                                     * * * * * * *
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Footnotes to table in Paragraph (b)(1):
* * * * * * *
[SU]a[/SU] Criteria revised to reflect the Agency q1* or RfD, as contained in the Integrated Risk Information System (IRIS) as of October 1, 1996. The
  fish tissue bioconcentration factor (BCF) from the 1980 documents was retained in each case.
[SU]c[/SU] Criteria are based on carcinogenicity of 10[SU]-6[/SU] risk.
[SU]d[/SU] Criteria Maximum Concentration (CMC) equals the highest concentration of a pollutant to which aquatic life can be exposed for a short period
  of time without deleterious effects. Criteria Continuous Concentration (CCC) equals the highest concentration of a pollutant to which aquatic life can
  be exposed for an extended period of time (4 days) without deleterious effects. mg/L equals micrograms per liter.
* * * * * * *
[SU]t[/SU] These criteria were promulgated for specific waters in California in the NTR. The specific waters to which the NTR criteria apply include:
  Waters of the State defined as bays and estuaries including San Francisco Bay upstream to and including Suisun Bay and the Sacramento-San Joaquin
  Delta; and waters of the State defined as inland (i.e., all surface waters of the State not bays or estuaries or ocean) without a MUN use designation.
  This section does not apply instead of the NTR for these criteria.





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