42266
                                                                                 823Z9300
                                                                           40 CFH Parts 122,123,131, and 132
                                                                           [FRL-468»-7)
                                                                           BIN 2040-AC08

                                                                           PropoMd Water Quality Guidance for
                                                                           the Great Lakes System
                                                                           AGENCY: U.S. Environmental Protection
                                                                           Agency.           •        ,
                                                                           ACTION: Proposed rule; availability of
                                                                           documents; correction.

                                                                           SUMMARY: The purpose of this document
                                                                           {g to announce the availability of two
                                                                           reports that EPA is considering as it
                                                                           develops the final Water Quality
                                                                           Guidance for the Great Lakes System; to
                                                                           request public comment on the possible
                                                                           application of the options set forth in
                                                                           these reports in the final Guidance; and
                                                                           to make corrections to the preamble and
                                                                           proposed rule text for the proposed
                                                                           Water Quality Guidance for the Great
                                                                           Lakes System, including missing text
                                                                           and changes that were inadvertently
                                                                           omitted during the editing of the
          Recycled/Recyclable- Printed with Vegetable Oil Based Inks on 100% Recycled Paper (50% Postconsumer) • Please recycle as newsprint

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              Federal Register  / Vol. 58, No. 151 / Monday, August  9, 1993 / Proposed Rules
                                                                  42267
proposed rule. The proposed rule was
published in the April 16,1993, Federal
Register (58 FR 20802). with corrections
published at 58 FR 21046.
  The two reports being made available
for public comment are: "Revision of
Methodology for Deriving National
Ambient Water Quality Criteria for the
Protection of Human Health: Report of
Workshop and EPA's Preliminary
Recommendations for Revision"
("Preliminary Recommendations"), and
"Interim Report on Data and Methods
for Assessment of 2.3.7,8-
Tetrachlorodibenzo-p-dioxin Risks to
Aquatic Life and Associated Wildlife"
("Interim Dioxin Report"). EPA wants to
ensure that the public has an
opportunity to comment on whether any
of the options in the Preliminary
Recommendations should be adopted in
the final Great Lakes Water Quality
Guidance methodologies for
development of human health criteria
and values, and for development of
bioaccumulation factors. EPA also
invites the public to comment on
whether any of the data and methods in
the Interim Dioxin Report-should be
adopted in the final Great Lakes
Guidance.

DATES: Written comments should be
submitted on or before September 13,
1993. Comments postmarked after this
date may not be considered.

ADDRESSES: Send written comments to
Wendy Schumacher, Water Quality
Branch (WQS-16J). U.S. EPA. Region V,
77 West Jackson Blvd.. Chicago, Illinois,
60604 (telephone: 312-886-0142).
Commenters are requested to submit
one original and 4 copies of their
written comments. In addition, EPA
encourages commenters to provide one
copy of their comments in electronic
format, preferably 5.25" or 3.5" diskettes
compatible with WordPerfect for DOS.
A copy of the reports identified in this
document are available for inspection
and copying at the U.S. EPA Region V
Records Center,  77 W. Jackson Blvd..
Chicago, Illinois, by appointment only.
Appointments may be made by calling
Wendy Schumacher (telephone: 312-
886-0142). A reasonable fee will be
charged for photocopies. The two
reports are also available by mail upon
request for a fee (see section I.C of
Supplementary Information for more
information).

FOR FURTHER INFORMATION CONTACT:
Kenneth A. Fenner, Water Quality
Branch Chief. (WQS-16J). U.S. EPA
Region V, 77 W. Jackson Blvd.. Chicago.
Illinois, 60604 (telephone: 312-353-
2079).
SUPPLEMENTARY INFORMATION:
I. Availability of Documents and
Request for Comments
  Section 304(a)(l) of the Clean Water
Act (33 U.S.C 1314(a)(l)) requires EPA
to publish and-periodically update
ambient water quality criteria. These
criteria are to reflect the latest scientific
knowledge on the identifiable effects of
pollutants on public health and welfare,
aquatic life and recreation. Section
118(c)(2) of the Clean Water Act
requires EPA to publish water quality
guidance for the Great Lakes System
which includes guidance on numerical
limits on pollutants in ambient Great
Lakes waters to protect human health,
aquatic life and wildlife.
  The proposed Water Quality
Guidance for the Great Lakes System
was published on April 16.1993, in the
Federal Register (58 FR 20802).
Corrections to the proposed preamble
and proposed rule text were published
in the Federal Register on the same date
(58 FR 21046). This Guidance, once
finalized, will establish minimum water
quality standards, antidegradation
policies, and implementation
procedures  for waters within the Great
Lakes System in the States of New York,
Pennsylvania, Ohio, Indiana, Illinois,
Minnesota,  Wisconsin, and Michigan,
including waters within the jurisdiction
of Indian Tribes.
A. Great Lakes Guidance Human Health
Methodology
  In 1980, EPA published National
guidelines for the development of
protective criteria for contaminants that
may adversely affect human health in
ambient water. These guidelines can be
found at 45 FR 79347, dated November
28.1980. Using the 1980 National
Guidelines, criteria may be developed
based on lexicological endpoints
(cancer and non-cancer adverse health
effects), and organoleptic effects. The
guidelines for derivation of criteria
consider potential human exposure via
consumption of water and ingestion of
contaminated fish and shellfish.
  The proposed Great Lakes Water
Quality Guidance includes proposed
numeric criteria to protect human
health for 20 pollutants and
methodologies to derive cancer and
non-cancer  human health criteria and
values for additional pollutants. It also
includes a methodology for
development of bioaccumulation factors
to be used in developing human health
and wildlife criteria. Although the
objectives of the proposed Great Lakes
Human Health Guidance are similar to
those of the 1980 National Guidelines,
the proposed Great Lakes Human Health
Methodology differs from current
National Guidance in several respects.
For example, the Great Lakes Guidance
uses bioaccumulation factors which
account for uptake of pollutants directly
from the waters of the Great Lakes
System plus uptake of pollutants from
the food chain rather than
bioconcentration factors (which only
account for uptake of pollutants directly
from the water). Additionally, a fish
consumption rate that is based on data
from the Great Lakes area is used in the
proposed Guidance. For additional
details on the proposed methodology.
including similarities and differences
with the 1980 National Guidelines,
readers are referred to the preamble
discussion contained in the April 16,
1993, notice (58 FR 20863-20877).
  The April 16,1993. proposed
Guidance indicated that EPA is
currently in the process of reviewing
and revising its 1980 National
Guidelines. EPA believes that the
National Guidelines should be
evaluated from time to time to
determine whether significant advances
have occurred in the science which
should be reflected in the National
methodology guidelines. As a first step
in the revision effort, EPA prepared an
issues paper and held a workshop on
September 13-16.1992, in Bethesda,
Maryland to discuss the issues with a
group of experts from EPA, other federal
agencies, states, academia, industry,
conservation groups and other
interested parties. The workshop
participants were divided into six
working groups which discussed the
following technical subjects: (1) cancer
risk, (2) non-cancer risk, (3) exposure.
(4) microbiology. (5) minimum data and
(6) bioaccumulation. Each group
provided a written summary of the
information discussed by the group. The
reports from the workshop and EPA's
preliminary recommendations for
revisions to the human health
methodology were integrated into a
report entitled, "Revision of
Methodology for Deriving National
Ambient Water Quality Criteria for the
Protection of Human Health: Report of
Workshop and EPA's Preliminary
Recommendations for Revision"
("Preliminary Recommendations"),
prepared by the Human Risk
Assessment Branch, U.S. EPA Office of
Water. January 8,1993.
  The Preliminary Recommendations
report was submitted to EPA's Science
Advisory Board (SAB) for review and
comment during the SAB's February 9-
10.1993, meeting. The SAB meetings
are open to the public and the public
may submit comments on the issues.
discussed at these meetings directly to

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42268        Federal Register / VoL 58. No. 151 / Monday. August 9. 1993 / Proposed Rules


the SAB. EPA anticipates that the SAB
will provide formal written comments
on the Preliminary Recommendations in
an SAB report expected this year. EPA
will make the SAB report available to
the public at that time. EPA will
consider all public comments submitted
to the SAB in response to the February
9-10,1993. SAB review meeting and
any public comments on the final SAB
report, when it becomes available, in the
preparation of the final Great Lakes
Guidance. EPA encourages the public to
also send one original and 4 copies of
their written comments to  the SAB
directly to Ms. Wendy Schumacher at
the address specified at the beginning of
today's notice.
  EPA is providing this notice of
availability, and placing the Preliminary
Recommendations in the administrative
record for the proposed Great Lakes
Water Quality Guidance, because EPA
intends to consider all the
recommendations concerning issues
associated with the National guidelines
revision, and discussed in the subject
report, in the development of final
Water Quality Guidance for human
health protection in  the Great Lakes
System. EPA will also consider the SAB
comments on the Preliminary
Recommendations in finalizing the
Great Lakes Guidance, and intends to
issue a subsequent notice  of availability
when the SAB report is issued. The
following are some examples of
alternatives discussed in the January 8,
1993, Preliminary Recommendations to
the SAB but not included in the April
16/1993, proposal.
         "" Data
 1.
  The proposed Great Lakes Guidance
 would include two tiers of criteria/
 values for the protection of human
 health which differ in minimum data
 requirements. For example, to develop a
 noncancer Tier I criterion, the miniTmim
 requirement is a no-observed-adverse-
 effect-level (NOAEL) from a well
 conducted subchronic mammalian
 study. The duration of the study must
 be at least 90 days in rodents, or 10
 percent of the lifespan of other
 appropriate species. For a noncancer
 Tier n value, the minimum acceptable
 database is a NOAEL from a well
 conducted repeated dose mammalian
 study of at least 28 days. For both Tier
 I criteria and Tier n values all relevant
 data must be considered. The terms
 "criteria" and "values" are used to
 differentiate between protective ambient
 concentrations derived with optimum,
 as opposed to acceptable, data
 requirements. Both Tier I criteria and
 Tier n values will have regulatory effect
under the proposed Great Lakes
Guidance. [See 58 FR 20871-74.)
  One option discussed in the January
8,1993. Preliminary Recommendations
involves a five-tier approach based on
the quality and type of lexicological
information. These tiers range from high
confidence data (Tier I) to no available
data (Tier V). Data requirements for Tier
I chemicals include mechanistic,
pharmacokinetic, and target organ
toxidty data. TierH includes those
chemicals with enough data to establish
a reference dose (RED) for noncancer
endpoints or a cancer potency factor.
Readers are referred to the April 16,
1993 notice (58 FR 20872-73) for
information  on the minimum acceptable
data base for an RfD or a cancer potency
factor. Tier ffl includes: (1) Chemicals
for which available data are not
sufficient to meet the requirements for
RfD development but consist of at least
a well conducted 28-day repeated oral
dose rodent bioassay resulting in a
NOAEL. (2)  chemicals which are Group
C chemicals (see U.S. EPA's Guidelines
for Carcinogenic Risk Assessment.
published on September 24.1986 at 51
FR 33992) and for which insufficient
data to calculate a cancer potency slope
exists, and (3) chemicals which are
Group C chemicals of low concern (e.g.,
chemicals of low potency or in which
the mechanism of carcinogenicity does
not appear directly related to humans
 due to species differences in
 toxicokinetics). Tier IV chemicals
 include those not meeting the 28-day
 minimum data requirement for Tier ffl,
 but available noncancer and cancer data
 (such as acute toxicity data, genetic
 toxicology,  structure activity
 relationship data) indicates a potential
 health hazard. Tier W data are
 insufficient to develop a numeric
 criterion but may be used in interpreting
 narrative criteria. Tier V indicates no
 data availability. Under this alternative
 five-tier approach, Tiers I and n are
 equivalent to Tier I criteria in the
 proposed Great Lakes Guidance while
 Tier m is equivalent to Tier n values in
 the Guidance. This alternative scheme is
 a refinement of the proposed Great
 Lakes Guidance 2-tier approach. The
 extra tiers are added to better describe
 and categorize the quality of the data.
 EPA requests comment on the use of
 this alternative classification scheme of
  five tiers for the Great Lakes Guidance
  and, specifically, on how these different
  tiers could be used in regulatory
  decision-making (e.g.. in setting permit
  limits). For example, in those instances
  where insufficient data exist to develop
  numeric criteria or values, available
 information could nevertheless be used
 to interpret State narrative criteria.
 2. Relative Source Contribution
   Under the proposed Great Lakes
 Guidance, EPA assumes an 80 percent
 relative source contribution (RSC) from
 surface water pathways (water and fish)
 for bioaccumulative contaminants of
 concern (BCCs). and 100 percent RSC
 for non-BCCs, in deriving noncancer
 criteria/values. A 100 percent RSC is
. assumed for all chemicals in deriving
 cancer criteria/values. (See 58 FR
 20870.)
   Several alternative options are
 described in the Preliminary
 Recommendations. One option is to use
 a subtraction approach to account for
 other sources of exposure (e.g., air. food)
 when there are sufficient data to
 quantitatively apportion them rather
 than using arbitrary default values. (In
 the case of no available data, a default
 assumption will still have to be made.)
 The contribution from these other
 sources could be subtracted from the
 Reference Dose (RfD) in deriving the
 criteria. One of the options includes the
 use of a 20 percent floor and an 80
 percent ceiling for the RSC when
 adequate exposure data are available,
 and a 20 percent default value when
 adequate exposure data are lacking.
 There is no differentiation for
 bioaccumulative and non-
 bioaccumulative chemicals under any of
 the options in the report EPA requests
 specific comments on the possibility of
 incorporating one of the RSC options
 described in the  January 8,1993,
 Preliminary Recommendations in the
 final Great Lakes Guidance.
 3. Development  of Short-Tenn Advisory
 Levels
    Under the Great Lakes Guidance, all.
  criteria and values are developed based
  on an assumption of long-term       v
  exposures to humans. A 70-year
  exposure is assumed, and fish and water
  consumption rates reflect long-term
  exposures. An alternative is discussed
  in the report to the SAB. The workshop
  report and EPA's preliminary
  recommendations include the concept
  of developing one-day Healtii Advisory
  Doses (HADs) which could be used to
  develop criteria to protect the public

  such as pregnant women) from large
  short-term doses of contaminants from
  consumption of fish containing
  pollutant residues. This concept was
  developed with the belief that people
  may consume large amounts of fish
  during a given meal and that
  reproduction/developmental effects (or
  other short-term acute effects) may not

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Federal Register  /  Vol.  58,  No. 151  /  Monday, August 9, 1993  /  Proposed Rules       42269
  adequately be accounted for with a
  lifetime criterion using a long-term
  exposure assumptions. Criteria based on
  short-term exposures would supplement
  criteria based on long-term exposures.
  EPA requests specific comment on this
  issue with regard to the need for
  development of human health criteria
  based on short-term exposures.
  B. Interim Dioxin Report
    EPA released a peer-reviewed interim
  report on dioxin ecological effects on
  April 23,1993. This report is entitled,
  "Interim Report on Data and Methods
  for the Assessment of 2,3,7,8-
  Tetrachlorodibenzo-p-dioxin Risks to
  Aquatic Organisms and Associated
  Wildlife", prepared by the Office of
  Research and Development, U.S. EPA,
  March 1993 (EPA Report Number EPA/
  600/R-93/055). The report compiles and
  evaluates toxicity, exposure and
  bioaccumuhUion data from the current
  scientific literature for aquatic life and
  associated wildlife regarding dioxin.
  The report addresses issues related to
  risk characterization to illustrate the use
  of current information in ecological risk
  assessments.
   EPA is placing this document hi the
  administrative record for the Great
  Lakes Guidance because the proposed
  Great Lakes Guidance includes both
  human health and wildlife criteria for
  dioxin. The Interim Dioxin Report
  contains relevant information for the
  derivation of a wildlife criterion for
 dioxin. In addition, the Interim Dioxin
 Report summarizes available effects and
 exposure data for assessment of dioxin
 risks to aquatic life and provides
 information on how to derive dioxin
 bioaccumulation factors (BAFs). BAFs
 are used in deriving both human health
 and wildlife criteria. Under the BAF
 methodology in the Interim Report, the
 dioxin BAF varies with the particulate
 organic carbon (POC] content of the
 ambient water. The Interim Report
 shows BAFs and environmental
 concentrations associated with risks to
 aquatic life and wildlife based on Lake
 Ontario data (POC of 0.2 mgTL).
 Available information suggests that POC
 levels vary considerably among the
 waters of the Great Lakes system. For
 example. POC levels range from less
 than 0.05 mg/L in Lake Superior to
 levels from 2 mg/L to 20 mg/L (during
 heavy rain periods) in the Fox River, a
 tributary of Lake Michigan As the POC
 level increases, the effect concentration
 increases due to greater binding by
 organic matter.
  EPA did not propose an aquatic life-
based criterion for dioxin in the April
 16.1993. proposed Great Lakes
Guidance because research efforts in
                       this area are still on-going and the
                       available data are not sufficient to
                       derive a Tier I aquatic life criterion. The
                       Interim Dioxin Report has data that may
                       be used to calculate a Tier H aquatic life
                       value for dioxin.
                         EPA requests specific public
                       comments on: (1) The applicability of
                       the information contained in the Interim
                       Dioxin Report to a wildlife criterion for
                       dioxin in the Great Lakes System. (2)
                       whether the information provided on
                       aquatic life effects in the Interim Dioxin
                       Report should be used in the final Great
                       Lakes Guidance to calculate an interim
                       numerical limit for dioxin to protect
                       aquatic life (i.e.. a Tier II value), and (3)
                       whether the methodology in the report
                       should be used to develop BAFs that
                       vary in the Great Lakes basin with POC
                       levels in the ambient water or whether
                       a single BAF should be used for
                       consistency among the Great Lakes
                       States.

                       C. Document Availability

                        The two reports that are referenced in
                       this document are available for
                       inspection and photocopying in the
                       administrative record for this -
                       rulemaking at the address listed at the
                       beginning of this preamble. A
                       reasonable fee will be charged for
                       photocopies.
                        The report, "Revision of Methodology
                       for Deriving National Ambient Water
                       Quality Criteria for the Protection of
                       Human Health: Report of Workshop and
                       EPA's Preliminary Recommendations
                       for Revision" is available for a fee upon
                       written request or telephone call to the
                       National Technical Information Center
                       (NT1S). U.S. Department of Commerce.
                       5285 Port Royal Road, Springfield, VA
                       22161. The toll free number is 800-553-
                       6847 and the local number is 703-487-
                       4650. Alternatively, copies may be
                       obtained for a fee upon written request
                      or telephone call to the Educational
                      Resources Information Center/
                      Clearinghouse for Science. Mathematics.
                      and Environmental Education (ERIC/
                      CSMEE), 1200 Chambers Road, room
                      310. Columbus. Ohio 43212 (phone
                      number: 614-292- 6717). When
                      ordering, please  include the NTIS
                      accession number. PB 93-213494. price
                      code AO6. or the ERIC/CSMEE
                      accession number, 687-D, $12.25.
                       The report, "Interim Report on Data
                      and Methods for Assessment of 2,3,7,8-
                      Tetrachlorodibenzo-p-dioxin Risks to
                      Aquatic Life and Associated Wildlife,"
                      is available upon written request or
                      telephone call to the Center for
                      Environmental Research Information,
                      EPA Office of Research and
                      Development, 26 West Martin Luther
  King Drive. Cincinnati, Ohio 45268
  (phone number: 513-569-7562).
  n. Corrections
   This notice provides corrections to
  several paragraphs in the preamble and
  the proposed rule text for the proposed
  Water Quality Guidance for the Great
  Lakes System which appeared on the
  April 16,1993, Federal Register (58 FR
  20802). The corrections provide missing
  text and changes that were inadvertently
  omitted during editing of the proposed
  rule and are in addition to corrections
  1 through 7 published with the
  proposed rule in a separate section of
  the April 16.1993, Federal Register (58
  FR 21046).

  Correction 8
   The last sentence of the second
 paragraph of the DATES section of the
 notice should read, "The hearing officer
 reserves the right to limit oral testimony
 to 10 minutes or less, if necessary." (58
 FR 20802) The words "or less" were
 omitted ihrough editing error.
 Correction 9
   Two addresses in the ADDRESSES
 section contained typographical errors.
 Under Minnesota, the address should
 read. "Minnesota Pollution Control
 Agency, Library, 520 Lafayette, St. Paul.
 Minnesota (612-296-7719)." Under
 New York, the entry for NYSDEC,
 Region 8. should read. "NYSDEC,
 Region 8,6274 East Avon-Lima Road,
 Avon. New York, 14414 (716-226-
 2466)." (58 FR 20802)

 Correction 10
   The third sentence of the second
 paragraph of section I.A.4.a of the
 preamble should read, "An effluent
 limit of one mg/L of phosphorus was
 imposed on all major (greater than 1
 million gallons per day) municipal
 sewage treatment facilities in the Great
 Lakes basin." (58 FR 20807) The.
 revision corrects an error in the units of
 the effluent limit.

 Correction 11
  The references in sections I.A.4.b (58
 FR 20809) and I.H (58 FR 20832) to a
 study by Ballschmitter et al., 1989, are
 deleted.

 Correction 12
  The following reference should be
added to the list in section LH of the
preamble (58 FR 20832):
Eisenreich, S.J. and W.M.J. Strachan.
  1992. Estimating atmospheric
  deposition of toxic substances to the
  Great Lakes: an update, from
  workshop, Canada Center for Inland
  Waters, Burlington, Ontario, January

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 42270        Federal Register / Vol. 58. No. 151  /  Monday, August 9, 1993  /  Proposed Rules
  31—February 2,1992, sponsored by
  Great Lakes Protection Fund and
  Environment Canada. June 1992.
 Correction 13
  The last sentence of section n.C of the
 preamble should read as follows: "For
 example, the EPA guidance document
 Technical Support Document for Water
 Quality-based Toxics Control' (March
 1991) remains fully applicable as
 guidance within the Great Lakes System
 for topics that have not been addressed
 by the proposed Guidance, and fully
 applicable as guidance for all topics for
 waters outside the Great Lakes System."
 (58 FR 20835) The second word
 "guidance" replaces the word
 "evidence," which was a typographical
 error.
 Correction 14
  The second sentence of the second
 paragraph of section n.D.3 of the
 preamble should read, "The approach
 may therefore result in permit limits
 which may later be found to be more
 stringent than those derived from new
 toxicity data." (58 FR 20837). The words
 "more stringent" replace the word  .
 "nonresistant," which was a
 typographical error.
 Correction 15
  The ninth paragraph of section n.G of
 the preamble should read as follows:
 "The third way that Table 6 affects the
 initial focus of this Guidance is in
 determining when States, Tribes, and/or
 permittees must generate data necessary
 to calculate Tier II values used in
 developing water quality-based effluent
 limits. Procedure 5.D of the proposed
 Implementation Procedures in appendix
F requires that permitting authorities
generate, or have permittees generate,
the data necessary to calculate Tier n
values for pollutants in Table 6 for
which there is no Tier I criterion or Tier
n value if the permitting authority
 determines based on a specified
 screening approach that a discharge
 causes, has the reasonable potential to
 cause or contributes to an excursion
 above a State water quality standard."
 (58 FR 20844) The word "permittee"
replaces the word "permitter," which
was a typographical error, in two places.

 Correction 16
  The first sentence of the second to the
last paragraph of section n.G of the
preamble should read, "EPA invites
comment on the proposed BAF level of
 100C ojid any alternative BAF levels for
use in defining BCCs." (58 FR 20845).
The word "defining" replaces the word
 "defending," which was a typographical
 error.
 Correction 17
  The fifth paragraph of section n.H of
 the preamble should read as follows: "If
 a Great Lakes State or Tribe fails to
 submit criteria, methodologies, policies,
 and procedures tp EPA for review,
 proposed § 132.5(c) provides that the
 requirements of this part will apply to
 discharges within the State or Federal
 Indian Reservation upon EPA's
 publication of a final rule in the Federal
 Register indicating the effective date of
 the part 132 requirements in the
•identified jurisdictions. EPA does not
 intend to provide at that time an
 opportunity for another round of public
 comment on the criteria,  methodologies,
 policies, and procedures  presented in
 the proposed Guidance. EPA believes
 that under these circumstances, today's
 public comment period will  provide
 adequate notice and opportunity for
 comment on all issues related to the
 criteria, methodologies, policies, and
 procedures. Accordingly, EPA will issue
 a final rule identifying the criteria,
 methodologies, policies, and procedures
 that apply in the appropriate
 jurisdictions."  (58 FR 20846) Tho words
 "a final rule" replace "the final
 Guidance," to correct an editing error,
 in two places.

 Correction 18
  The first sentence of the twelfth
 paragraph of section n.H  of the
 preamble should read as  follows:
 "Proposed § 132.5 of the proposed
 Guidance would provide that
 requirements of this part  will become
 effective within a State or Federal
 Indian Reservation if the  State or Tribe
 fails to make the necessary submission,
 or if one or more parts of the submission
 cannot be approved by EPA and the
 State or Tribe fails to correct the
 deficiency upon notice by EPA.
 following EPA's publication  of a final
 rule in the Federal Register identifying
 the elements of the part 132
 requirements that apply in the
 jurisdiction and their effective date in
 the jurisdiction." (58 FR 20846) As in
 correction 17, the words "a final rule"
 replace "the final Guidance," to correct
 an editing error.

 Correction 19
  The ambient water quality criteria for
 aquatic life for pentachlorophenol and
 phenol should be corrected in Tables
 ni-1 and m-2 of the preamble (58 FR
 20853) and Tables 1 and  2 of proposed
 part 132 (58 FR 21014). The correct
 values were used, however, in the
 support document, "Great Lakes Water
 Quality Initiative Criteria Documents for
 the Protection of Aquatic Life in
Ambient Water." The corrected values
are: for Pentachlorophenol, chronic
criterion (CCC). 4.1 ug/L; for Phenol,
acute criterion (CMC), 3600 ug/L; for
Phenol, chronic criterion (CCC)r 110 ug/
L.

Correction 20
  The headings "Percentile" and
"Sample Size" for Table ffl-3 of the
preamble were transposed by
typographical error. (58 FR 20856)
"Percentile" should appear over the left
column, and "Sample Size" should
appear over the 7 sub-columns on the
   it.
Correction 21
  In Table DC-1 of the preamble, the
entries for Major direct dischargers—
Municipal should read 348.9 and 353.5
for Scenarios 3 and 4 respectively. (58
FR 20987) The initial "3"s were omitted
through typographical error. The totals
for Scenarios 3 and 4 were also in error
for the same reason. They should read
473.9 and 505.5 for Scenarios 3 and 4
respectively. Please note that these
errors occur only in the table. EPA used
the correct figures in its analysis of the
costs of implementing the Guidance,
and in the preamble text discussing the
analysis. The figures are also stated
correctly  in the support document,
"Assessment of Compliance Costs
Resulting from Implementation of the
Proposed Great Lakes Water Quality
Guidance."

Correction 22
  The telephone number for the
National Technical Information Service
in the second paragraph of section Xin
of the preamble should be 800-553-
6847. (58 FR 21002)
  Dated: July 30.1993.
Martha G. Prothro,
Acting Assistant Administrator.
[FR Doc. 93-18974 Filed 8-6-93; 8:45 am]
BILUNQ CODE !««» JO P

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