600D80020
3-11-80
Voi 45 No. 4C
Tuesday
March 11, 1980
CORRECTION TO-
Federal Register, Thursday,
November 29, 1979, Part III,
Appendix C; Analysis of
Trihalomethajfes in Drinking
Water
Highlights
15503 Cancer Control Month Presidential proclamation
15677 Desegregation HEW/NIE announces a program
of research grants; closing dates: 5-22 (small grants)
and 10-7-80 (major grants)
15547, Hazardous waste. Dioxin EPA promoits the
15592 disposal of Tetrachlorodibenzo-P-Dioxin; comments
by 5-12-80, hearing on 5-20-80 (2 documents)
15884 Food Stamps USDA/FNS issues requirements for
establishing Performance Reporting System;
effective 4-10-80 (Part V of this issue)
ir;SO Medicare HEW/HCFA issues notice regarding
reimbursement of hospital-based physicians;
effective 7-1-80
15566 Supplemental Security Ir.come HEW/SSA
proposes rule defining Who qualifies as a spouse,
child, or parent; comments by 5-12-80
15673 Radiological Health HEW/FDA announces
availability of preamble compilation for published
documents
15802 Grain USOA/FGIS publishes standards; effective
4-10-80 (Part II of this issue)
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15542 Federal Register / Vol. 45. No, 49 / Tuesday, March 11, 1980 / Rules and Regulations
40 CFR Part 141
tFRt 1431-11
National Interim Primary Drinking
Water Regulations; Control of
Trihalomcthanes In Drinking Water;
Correction
AGENCY: Environmental Protection
Agency (EPA).
ACTION: Final Rule; Correction.
SUMMARY: This document corrects errors
found in Federal Register Doc. 79-36442.
appearing at page 68624 in the Federal
Register of November 29,1979. Included
among the corrections are a completed
description of an analytical
methodology, additional discussion
concerning the cost/benefit analysis and
revised figures describing the extent of
monitoring required.
FOR FURTHER INFORMATION CONTACT:
Joseph A. Cotruvo, Director, Criteria and
Standards Division, Office of Drinking
Water (WH-550). Environmental
Protection Agency, 401M Street, S.W.,
Washington, D.C. 20460 (202-472-5016).
SUPPLEMENTARY INFORMATION: In
Federal Register Doc. 79-36442.
appearing at page 68624 in the Federal
Register of November 29,1979, the
following changes should be made:
1. Page 68633—The existing Figure 1
should be replaced by the accompanying
Figure 1. "Considerations for Reduced
Monitoring Requirements, Surface
Water Systems."
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Federal Register / Vol. 45. No. 49 / Tuesday. March 11. 1980 / Rule3 and Regulations
15543
FIGURE 1
CONSIDERATIONS FOR REDUCcD MONITORING REQUIREMENTS
SUIlFACE WATER SYSTEMS
THE MINIMUM MONITORING REQUIREMENT IS FOUR SAMPLES PER
QUARTER PER PLANT. REDUCED MONITORING REQUIREMENTS MAY
BE APPROPRIATE IN CERTAIN CASES UPON WRITTEN REQUEST FROM
THE PUBLIC WATER SYSTEM STATES MAY REDUCE THE REQUIREMENTS
THROUGH CONSIDERATION OF APPROPRIATE DATA AS FOLLOWS:
SUHFACI: WATCH SYSTCM
1 SAMPt.es PER QUARTER
roil i HIM
ONE YF.AR OF DATA:
1TIIWI CONSISTENTLY
OELOWO 10MG/L
STATE JUDC-MCNTX3N
HEDUCCD MONITORING'
MINIMUM. 1 SAMPLE PER
QUARTER FOR TTHM
CONTINUF. 4
SAMI'lES F'LR QUARTER
TTHM >0.10MG/U [
•FACTORS FOR CONSIDERATION:
• MUNITORING DATA. MTI'. TTHM, TOC
• QUALITY AND STABILITY OF SOURCE WATER
• TYPE OF TREATMENT
2. Page 68635—The existing Figure 2
should be replaced by the accompanying
Figure 2, "Considerations for Reduced
Monitoring Requirements, Groundwater
Systems."
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15544
Federal Register / Vol. 45, No. 49 / Tuesday. March 11.1980 / Rules and Regulations
FIGURE 2
CONSIDERATIONS FOR REDUCED MONITORING REQUIREMENTS
GROUNDWATER SYSTEMS
THE MINIMUM MONITORING REQUIREMENT IS FOUR SAMPLES PER
QUARTER PER PLANT;SYSTEMS USING MULTIPLE WELLS DRAWING RAW
WATER FROM A SINGLE AQUIFER MAY WITH STATE APPROVAL BE
CONSIDERED AS ONE TREATMENT PLANT. REDUCED MONITORING
REQUIREMENTS MAY BE APPROPRIATE IN CERTAIN CASES; UPON
WRITTEN REQUEST FROM THE PUBLIC WATER SYSTEM. STATES MAY
REDUCE THE REQUIREMENTS THROUGH CONSIDERATION OF APPROPRIATE
DATA AS FOLLOWS:
GROUNOWATER SYSTEM
SAMPLE FOR MTP
MTP >0.10MG/L
MTP <0.10MG/L
I
STATE JUDGMENT ON
REDUCED MONITORING*
MINIMUM: 1 SAMPLE
PER YEAR FOR MTP
4 SAMPLES PER QUARTER
FOR TTHM
1
ONE YEAR OF DATA:
TTHM CONSISTENTLY
BELOW 0.10 MG/L
1
*ES
I
STATE JUDGMENT ON
REDUCED MONITORING*
MINIMUM: 1 SAMPLE PER
QUARTER FOR TTHM
CONTINUE 4
PER QUARTER
TTHM >0.10MG/L
"FACTORS FOR CONSIDERATION:
• MONITORING DATA. MTP, TTHM. TOG
• QUALITY AND STABILITY OF SOURCE WATER
• TYPE OF TREATMENT
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Federal Register / Vol. 45. No. 49 / Tuesday. March 11. 1980 / Rules and Regulations 15545
3. Page 68842—§ 141.30(e) should be
revised in the eighth line of the second
paragraph such that the words, "(or
above)," are inserted immediately
following the words, "25* C," and
immediately proceeding the words,
"prior to analysis."
4. Page 68642—5141.30(e)(l) should be
revised such that the title refers to
"Drinking" water rather than "Finished"
water.
5. Page 68642—5 141.30(f)(5) should be
deleted in its entirety and replaced with
the following, "Consider inclusion in the
plan of provisions to maintain an active
disinfectant residual throughout the
distribution system at all times during
and after the modification."
8. Page 68657—In the first column, the
eighth and ninth lines of the second
paragraph of comment #45 should read
exactly as follows, "associated with
chlorite and chlorate which are
produced from . . . ."
7. Page 68664—In the third column, the
ninth line of sub-paragraph two under
comment #68 should read exactly as
follows, "another for metabolically—."
8. Page 68672—In the second column,
immediately following "Appendix C—
Analysis of Trihalomethanes" and
before "Part 1: The Analysis. . .." insert
the following: "[Mention of trade names,
products or company names do not
constitute an endorsement or
recommendation by the EPA.]"
9. Page 68672—Li Part 1 of Appendix
C, the numbering of the paragraphs in
Section 2 should be revised as follows:
Section 2.2 should be 2.1, Section 2.3
should be 2.2. Section 2.4 should be 2.3
and Section 2.5 should be 2.4.
10. Page 68674—Part 1 of Appendix C
should be revised to reflect the fact that
Sections 4.3 through 5.7, inclusive, were
omitted. The omitted sections, which
should be inserted accordingly, are as
follows:
4-3 Sampling containers—40 ml screw
cap vials sealed with Teflon faced
silicone septa. Vials and caps—Pierce
#13075 or equivalent. Septa—Pierce
#12722 or equivalent
4-4 Syringes—5-ml glass hypodermic
with luerlok tip (2 each).
4-5 Micro syringes—10.100 ul.
4-6 Micro syringe—25 ul with a 2" x
0.006" ID needle—Hamilton #702N. or
equivalent.
4-7 2-way syringe valve with luer ends (3
each) Hamilton #86570-1FM1, or
equivalent.
'•8 Standard storage containers—15 ml
amber screw-cap septum bottles with
Teflon faced silicone septa. Bottles
and Caps—Pierce #19830, or
equivalent. Septa—Pierce #12716. or
equivalent
5. Reagents and Materials.
5.1 Porous polymer packing 60/80 mesh
chromatographic grade Tenax GC
(2,6-diphenylene oxide).
5.2 Three percent OV-1 Chromosorb-W
60/80 mesh.
5.31.0% SP-1000 on Carbopack-B (60/80
mesh) available from Supelco.
5.4 n-Octane on Porasil-C (100/120
mesh] available from Waters
Associates.
5.5 Three percent SP-1000 on
Chromosorb-W (60/80 mesh).
5.6 Free and combined chlorine reducing
agent—crystalline sodium thiosulfate,
ACS Reagent Grade or sodium sulfite,
ACS Reagent Grade.
5.7 Activated carbon—Filtrasorb-200,
available from Calgon Corporation,
Pittsburgh, PA, or equivalent.
11. Page 68674—to the first column.
change Section 5.9.3 to read exactly as
follows: "Chlorodibromomethane—
available from Columbia Organic
Chemicals Company, Inc., 912 Drake
Street Box 9096 E, Columbia, SC. 29208
or Aldrich Chemical Company."
12. Page 68676—In the first column,
change the last sentence in the narrative.
portion of Section 10.2 to read exactly as
follows, "Round off the data to two
significant figures."
13. Page 68676—In Table 1, revise the
column entitled, "Acceptable Alternate
to Column 1,0.4% Carbowax
Carbopack," as follows—change 0.4% to
0.2%.
14. Page 68684—In the first column,
change Section 5.5.3 to read exactly as
follows, "Chlorodibromomethane—
available from Columbia Organic
Chemicals Company, Inc., 912 Drake
Street Box 9096 E, Columbia, SC. 29208
or Aldrich Chemical Company."
15. Page 68688—In the first column.
change the last sentence of-the narrative
portion of Section 9.2 to read exactly as
follows,,"Round off the data to two
significant figures."
16. Page 68688—The upper right-hand
corner of Figure 2 should be revised so
that the title reads as follows:
"Column Packing: 10% Squalane, Carrier
. Flow: 25 ml/minute, Column
L Temperature: 67* C."
17. Page 68705—In the third column.
the third reference (beginning with
"Bellar, R. A.") should be revised to read
exactly as follows, "Bellar, T. A.. J. J.
Lictitenberg and R. C. Kroner. "The
Occurrence of Organohalides in
Chlorinated Drinking Waters." Journal
of American Water Works Association
66:12, 703-706,1974."
18. Page 68704—In the third column,
add the following discussion and table
(that were prepared prior to the
Administrator's signing of the
regulations but inadvertently omitted
from the Statement of Basis and
Purpose) to the end of Title IX, "Risk
Assessment":
"As indicated by NAS, the value of
avoiding a cancer death has been
estimated to be from $10,000 to $1.3
million. An often used estimate is
$200,000, a figure based upon both cost
earnings and social value. EPA feels
that benefit-cost analysis using this
methodology is more sophisticated than
the available data. In response to the
CWPS comments, the methodology was
used to develop Figure 1. This figure
shows the benefits associated with three
MCL alternatives, associating a value of
$200,000 per case using the best estimate
of 322 cases avoided. The cost of the
regulation alternatives, as discussed in
the economic impact assessment, are
also shown. The largest vertical
distance between the benefit and cost
curves represents the maximum net
benefit At this point, the greatest
economic efficiency is achieved. This
point corresponds to an MCL of 0.105
mg/1. This figure suggests that an MCL
of 0.100 mg/1 is clearly more
economically efficient than other MCLs
considered, based upon the most
appropriate benefit and cost
assumptions available."
19. Page 68706—In the third column,
change the fourteenth reference
(beginning with "Roe. F.J.C.") to read
exactly as follows, "Roe, F.J.C.,
'Preliminary Report of Long-Term Tests
of Chloroform in Rats, Mice and Dogs.'
Huntingdon Research Centre,
Huntingdon, England, 1976."
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15546 Federal Register / Vol. 45, No. 49 / Tuesday. March 11.1980 / Rules and Regulations
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