1. 141.25). The Board’s present rule apparently contained a typo-graphical error.
    2. minor editorial changes in Rules 309(B)(2)(b) and 309(B) (3).
    3. ORDER
    4. is stricken).
    5. 304 Finished Water Quality
    6. A. Bacteriological Quality
    7. A. Bacteriological

ILLINOIS POLLUTION CONTROL BOARD
July
21,
1982
IN
THE
MATTER
OF:
)
)
AMENDMENTS
TO CHAPTER
6:
)
R81—11
PUBLIC WATER SUPPLIES
)
(TRIHZ~LOMETHANES)
PROPOSED RULE.
SECOND NOTICE.
OPINION AND ORDER OF THE BOARD
(By J.D. Dumelle):
On April
29,
1982 the Board adopted a Proposed Rule!
First Notice Order in this matter.
First Notice
was
published
in the Illinois Peqister on May 21,
1982
(#21,
Vol.
6) and the
First ~otice per~cdonded on July 6~ 1982.
During that period
only
Tames
P.
Choffnor
filed
a
comment.
Trihalometh~ner3
(TEMs)
are organic chemicals consisting
of
one
carbon
atcm,
one
hydrogen
atom
and three halogen atoms
(R.21).
These
arc
formed
when
free
chlorine reacts with naturally
occurring
compounds
which
are
generally
produced by decaying
vegetation
(R.21).
Research
by
the
National
Cancer
Institute
and
the
National
Academy
of
Sciences
shovs
that
TtiMs
may
be
carcinogenic
and
can
lead
to
liver
or
kidney
disorders,
birth
defects
and
central
nervous system
cl~mngc
(fl.23
and
Ex.9).
In
recognition
of
these
possible adverse
health
effects,
the
United
States
Environmental
Protection
Agency
(USEPA)
promulgated
federal
regulations
(44
t’ed,
flog.
63624,
Ex.4,
fi.
23—24)
establishing
a
maximum
allo~iable
concentration
of
total
trihalomethanes
(TTHMs)
of
0.10
ng/l
and
setting
up monitoring schedules.
The federal
regulations are
part
of
the
Interim
Primary
Drinking
Water
Regula-
tions
(40 CFR
Part
141)
under
the
Safe Drinking Water Act
(42 U.S.C.
300f et seq.)
Tinder
that
Act,
States
which
adopt
rules
at
least
as
stringent
as
t.ho
US~~PZ~
rules
can
assume
primary
enforcement
responsibilities
(fi.
27).
Illinois
has
assumed
such
primacy
and
must
adopt
THM
rules
in
order
to
retain
it
(R27—28).
If
primacy
is
not
retained,
federal
funding
and
state
control
of
the
program
will
he
lost
for
the
entire
public
water
supply
program
(fl28—29).
The
result
of
this
would
he
federal
supervision
of
the
State
drinking
water
program.
Since
State
Agency
personnel
are
closer
to
the
systems
and
have
l’uilt
relationships
with
waterworks
owners
and
c~orators,
they
are
i~etter
able
to
deal
with
problems
that
arise
than
would
ho
USEPA
personnel
(R.
27—28).
At
a
minimum
public
health
protection
would
be
lessened
during
the
transition
period
from
State
to
USI~7~
control.
47-453

—2—
The economic impact study prep~ired
in this matter
(Ex.12)
~clu~os
that
the
benefits
of
adopting
the proposed amendments
e~itweigh
costs by
the
amount
of
federal
funding
plus
any
difference
in
analytical
costs
(Ex.12,
p.8).
The
reason
for
this
is
that
overt
tf
the
T~oarr1~~orc
to
c1~tc~u.ee
this
action,
the
essentially
equivalent
~
2~°~P-~’
would rcm~Unin
place,
and any upgrading
and o~Ung costs which
will
he
~osed
upon public water
supply
systems
in order to meet
the
proposed
standards ~iillbe imposed
of !~oardaction.
The
federal
grant
funding
~:hich
would
be
lost
if
the
Board
does not Mo’t standarde at least as stringent as the federal
sndards
in
nr~oro~:innte~1’,
$1.2 million which
represents
61~ of
the
ienc~’n
pn~lie
water
nnnvl~~~
direct
hu~ot
(E::.12,
pp.7—U
V~d1 fl~ 79)•
~
cli
o:once
in
an
t&c~ilcosts should result
in
a
ca’Tiflgs of $~7,000the first year and
$9,G22.50
in
subsequent
years
(Bc.12.,
p.7).
Thin
cavings
~.esnlts~rcm
the fact that if
the
State
fails
to
take
o”~r the
~odoral
program,
analysis
would
have
to
ho
clone
at
private
la~,ratorios
at
a
coot
of
$45
per
sample
rather
than
at
n.a~e operated
labs
~tta cost of $22.50
,‘~r~amplo.
This
is
hasod
on
the
l~oncy’c estimate
of
1200
viplrm
the
first year
and
428
samolos
~er
year
thereafter
(Ex.12,
?)~
7)
(tven that adontion of this
~qnlntien
cheuld
result
in
an
economic
nefit
as
well
an
a
nublie
healt!i
benefit
and
that
no
erie
p
nerited
any
ov~1on~eor
testimony
ztdvereo
to
t:ho
Agency
proposal,
the
rear~1 fin/’.s
that
reg
tions
should
be
adopted
wh~.ch
~
~i
~
•r~~~4
an the
doral regulations.
Thus,
the only ~.on
r
~&a.tng in ~ñet’,srthe ~oard should adopt the
nr~esal or: cot
more ntrin~entstaadard.
The
~ency’n
pro’onr~d
T~~i
ntari&trd
of
0.10 mg/1 was set on
the
b~sts
~
~
TJflT~?~
:a!~darc1which
in
turn
was
at
a
level
which
sian
V~ry1
to
al lc~i for
“one
O?~C355
cancer
death
for
every
~M,fl~O
to
r~,0~V)
pee~le
with a l~fetineo~:posuroto
this
in
their
drin~ng
~iatcr:”
(11.
24)
Ira ?~rkwe’~’l,
n.agr~rof the ~gonc’~’
s Public Water Supplies
Divini~,,tentxf’.ed
that
the
results
of
stuth.co
of
the
adverse
e~fectn
of ¶~rMson humans “are
quite
nt~
and controversial”
and
that
a?ar:ent
rre).atiens
)~etwecm ?T!~i
injccticn and adverse
effects
“tr’~.d
to di
~oar” ~rhenother factors such
as smoking,
ethnic
b;
~çreun’1
an’~Iin-lustrial
n::~eouro are
taken
into
consider—
atiori
tt.
~‘4
.
:~
rther
tr
tif3.o-1 thar
one
study
showed
that
chlorof~
~a
¶~!)
“ua’,
cent
.h!Ite
to
len~or l~fo”
(II.
74—75).
However
7’eth
!~o
arvl
P~r~’~’\
have cc
lucloci
th~t
the
USEPA
standards
“are
pro~’a’l~’tbe
rest
inen able
cempreetso”
and
that
it
is
~a
iood
precantir~nar’,
~
to
take
until
rore
c~idonce
is
available”
(it.
75~.7’j’
The roard could also
tne
a
stricter standard by enlarging
the
nc~oe of
affected
water
nu~plies,
e.g.
by
r.aking
the
TIIM
rules
~lic&Xe
to
all
mu?plies rather than only
to
those
supplies
47.
~54

—3—
serving more than 10,000 people.
However, since these smaller
supplies generally use ground water sources and have shorter
transport times,
they are considerably less likely to have THM
levels exceeding the 0.10 mg/l standard.
At the same time,
universal applicability would greatly increase the number of
water sample analyses which the Agency would have to perform.
After more data are gathered on existing TTHM levels, the
Board may consider an additional rulemaking to protect public
water supplies serving
less than 10,000 people.
Since a stricter standard would impose greater costs without
significant improvement in public health, the Board concludes
that the regulations should be adopted consistent with the Agency’s
proposal.
BOARD ACTION
Rule 104 is proposed to be amended by adding the definitions
of “Halogen,”
“Trihalomethane
(THM),”
“Total Trihalomethanes
(TTHM),”
“Maximum Total Trihalomethane Potential
(MTP)” and “Disinfectant.”
These definitions have been proposed by the Agency as identical
to the USEPA definitions, and are necessary to clarify the language
of the proposed rules.
The Board will propose these definitions
for Second Notice as the Agency proposed them and as they appeared
in First Notice.
The Board did receive a comment regarding the definition
of “Halogen” pointing out that the proposed definition differs
from the commonly accepted definition.
The commenter, therefore,
suggests that the phrase “for purposes of this regulation” be
added to the definition to be as scientifically correct as possible.
This suggestion certainly has merit.
However,
if such a phrase
is added in this case, then all definitions which differ from the
commonly accepted definitions should be similarly amended.
Further,
the correct phrase would be “for purposes of this Chapter” which
after codification would have to be amended to “for purposes of
this Subtitle,” and later may change again.
Thus, for reasons
of administrative convenience,
the Board declines to make the
requested amendment.
Rule 304(A)(2)(a)
is proposed to be amended to make the Board’s
finished water Total Coliform Standard consistent with the federal
standard and consistent with the Board Order in R73-13
(November 22,
1974).
Apparently, part of the Rule was inadvertently deleted in
the filed Rule.
While unrelated to this proceeding, the Board
proposes to correct this error.
No one has commented adversely
and the federal rule has been in effect and enforceable in any
case.
Rule 304(B)(3),
(4) and
(5) are proposed to be amended to
establish a maximum allowable concentration of 0.10 mg/i Total
Trihalomethanes in finished water and to establish a sampling and
monitoring program to determine whether and to what extent THMs
47-455

—4—
occur
in
Illinois
drinking water, and phased compliance dates
based upon the size of the population served by the supply
see
Note
(e).
The Board proposes these amendments as proposed by the Agency
and as they appeared in the Board’s First Notice Order, except
for a slight change in language in Rule 304(B)(5).
The Board
finds the proposed language concerning sampling frequency ambiguous.
The language “four samples of any four consecutive quarters” could
mean either four or sixteen total samples.
Furthermore, the Board
finds no reason to include any reference to the number of samples
since sampling requirements are fully set out in Rule 309.
There-
fore, the Board proposes to replace the cited language with the
phrase “of any twelve month period” which has the same effect of
requiring compliance based upon a running twelve month average.
Rule 309
is proposed to be amended by adding headings for
purposes of clarity, by adding sampling requirements for
Trihalomethanes, by reducing sampling requirements for ground
water supplies, and by correcting an apparent typographical error
regarding gross alpha particle activity.
The sampling requirement includes all supplies serving over
10,000 individuals.
Public water supplies utilizing a surface
water source will initially be required to submit four samples
per quarter
Rule
309(B)(1)(b).
If samples submitted show that
the trihalomethane standard is consistently met, the supply, upon
application to the Agency, may be allowed to reduce the sampling
frequency to once per quarter until the Maximum Allowable Concen-
tration is exceeded,
or until a significant change in the water
supply source or treatment method is made.
Supplies using a ground water source need only submit one
sample per treatment plant annually if an initial sample tested
for maximum total trihalomethane potential and local conditions
indicate that the supply is not expected to exceed standards, and
if the supply requests such a sampling frequency
(Rule
309
(B)(2)
(b).
Otherwise, the supply must conform with the requirements
for groundwater sources.
Rule 309
(B)(2)(a) has been amended to
reduce the requirement for submitting representative samples of
the finished water for Agency testing from once every two years
to once every three years.
This should help offset the additional
Agency testing which is necessary under the proposed trihalomethane
regulations, thus relieving some of the burden imposed.
The relaxed
sampling requirements for groundwater sources is justified by the
fact that such sources are considerably less likely to be contami-
nated or
to contain the organic precursors necessary for
THM
forma-
tion.
Rules 309 (B)(3) and
(4) have been proposed to be added
to require additional testing whenever the water source or
treatment method is changed or when the maximum allowable concen-
tration is exceeded.
47-456

—5—
Finally,
Rule
309(C)(1)(a)(1)
is proposed to be amended to
conform
with
the federal accuracy requirement (40 C.F.R.
Sec.
141.25).
The Board’s present rule apparently contained a typo-
graphical error.
All of the amendments to Rule 309 are consistent with federal
requirements and the Board’s First Notice except as noted and
minor editorial changes in Rules 309(B)(2)(b) and 309(B) (3).
ORDER
The
Board
hereby instructs the Clerk of the Board to proceed
to Second Notice in this matter and proposes the amendments as
below.
These rules are in conformity with the Safe Drinking Water
Act
(P.L.
93—523) and must be adopted in order for the State to
retain primacy.
The proposed amendments to chapter 6:
Water Pollution, are
indicated below (added language is underlined; deleted language
is stricken).
Rule 104
Definitions
(note:
the following definitions are to be
inserted alphabetically d.nto the present definitions.
“Halogen”
means
one of the chemical elements chlorine,
bromine or iodine.
“Trihalomethane
(THM)”
means one of the family of organic
compounds, named as derivatives of methane, wherein three of
the four hydrogen atoms in methane are each substituted by a
halogen atom in the molecular structure.
“Total Trihalomethanes (TTHM)” means the sum of the concen-
tration in milligrams per liter of the trihalomethane compounds
trichioromethane (chloroform), dibromochioroinethane,
broinodi—
chioromethane and tribromomethane
(bromoform)
),
rounded to two
significant figures.
“Maximum Total Trihalomethane Potential
(MTP)”
means the
maximum
concentration of total trihalomethanes produced in a given water
conta~ninga disinfectant residual after
7 days at a temperature
of 25 C or above.
“Disinfectant” means any oxidant, including but not limited to
chlorine, chlorine dioxide, chioramines, and ozone, added to
water in
any
part of the treatment or distribution process, which
is intended to kill or inactivate pathogenic microorganisms.
304
Finished Water Quality
A.
Bacteriological Quality
47-457

—6—
1.
Standard Sample
The standard sample for the coliform test shall
consist of:
a.
For the membrane filter technique, not less
than 100 milliliters.
b.
For the
fermentation
tube
method,
five
stand-
ard portions of either 10 milliliters or 100
milliliters.
2.
Total
Coliform
Limits
The number of organisms of the coliform group
present in potable water, as indicated by
representative samples examined, shall not
exceed the following limits:
a.
When the membrane filter technique is used,
arithmetic
mean
coliforni
density
of
all
standard samples examined per month shall
not exceed ~
one per 100 milliliters.
~
individual standard sample shall not exceed
four coliform colonies per 100 milliliters
in:
(1)
more than one standard sample when less
than twenty are examined per month; or
(2)
more than five percent of the standard
samples
when
twenty
or
more
are
examined
per month.
note:
the remaining text of subsection A remains unchanged
from
present rules.
B.
Chemical
and Physical
Quality
1.
The finished water shall contain no impurity in
concentrations that may be hazardous to the health
of the consumer or excessively corrosive or other-
wise deleterious to the water
supply.
Drinking
water shall contain no impurity which could reason-
ably be expected to cause offense to the sense of
sight, taste, or smell.
2.
Substances
used
in
treatment
should not remain in
the water in concentrations greater than required
by good practice.
Substances which may have a
deleterious physiological effect, or for which
physiological effects are not known, shall not be
used in a manner that would permit them to reach
the consumer.
47-458

—7—
3.
If the result of an analysis made pursuant to
these Rules indicates that the level of any
contaminant listed in Table I,except Total
Trihalomethanes,
exceeds the maximum allowable
concentration,
the
owner
or
operator
of
the
public
water
supply
shall
report
to
the
Agency
within
7
days
and
initiate
three
additional
analyses
at
the
same
sampling
point
within
one
month.
When
the
average
of
four
analyses,
rounded
to
the
same
number
of
significant
figures
as
the
maximum
allowable
concentration
for the substance
in
question,
exceeds
the
maximum allowable concen-
tration, the owner or operator of the public water
supply shall notify the Agency pursuant to Rule
310 B and give notice to the public pursuant to
Rule 313 D of these Rules.
Monitoring after public
notification shall be at a frequency designated by
the Agency and shall continue until the maximum
allowable concentration has not been exceeded in
two successive samples or until
a monitoring
schedule as a condition to a variance or enforce-
ment action shall become effective.
4.
If the average of samples covering any twelve month
period exceeds the maximum allowable concentration
for Total Trihalomethanes,
as listed in Table
I,
the
owner
or
operator
of
the
public
water
supply
shall
notify
the
Agency
pursuant
to
Rule
310
B
and
give
notice
to
the
public
pursuant
to
Rule
313
D
of
these Rules.
—4,
5.
The concentration of substances listed in Table
I, except for Total Trihalomethanes, shall not
exceed in the finished water the limits listed.
The average of Total Trihalomethanes concentra-
tion in the finished water of any twelve month
period per treatment plant or per aquifer shall
not exceed the limit listed in Table
I.
TABLE
I
MAXIMUM ALLOWABLE CONCENTRATIONS
FINISHED WATER QUALITY
Maximum
Reported
Concentration
Substance
As
mg/l
Arsenic
As
0.05
Barium
Ba
1.
47-459

—8—
Cadmium
Cd
0.010
Chromium
Cr
0.05
Copper
Cu
5
Cyanide
CN
0.2
Fluoride
F
1.8(d)
Iron
Fe
1.0(a)
Lead
Pb
0.05
Manganese
Mn
0.15(a)
Mercury
Hg
0.002
Nitrate—Nitrogen
N
10.(b)
Organics
Total Trihalomethanes
0.10(e)
Pesticides
Chlorinated
Hydrocarbon
Insecticides
Aldrin
0.001
Chlordane
0.003
DDT
0.05
Dieldrin
0.001
Endrin
0.0002
Heptachlor
Epoxide
0.0001
Lindane
0.004
Methoxychlor
0.1
Toxaphene
0.005
Chlorophenoxy Herbicides
2,4—Dichiorophenoxyacetic acid
(2,4—D)
0.1
2,4,
5—Trichlorophenoxypropionic
acid
0.01
(2,4,5—TP or Silvex)
Selenium
Se
0.01
Silver
Ag
0.05
Turbidity
NTU
1..-O(c)
Zinc
Zn
5.
NOTES:
a.
All non—community water supplies and those community water
supplies which serve a population of 1000 or less or 300
service connections or less shall be exempt from the stand-
ards for iron and manganese.
All other water supplies shall
comply with these standards by July
1,
1981.
Iron in excess
of 1.0 mg/l and manganese in excess of 0.15 mg/l may be
allowed at the discretion of the Agency if sequestration
tried on an experimental basis proves to be effective.
If
sequestering is not effective, positive iron or manganese
reduction treatment aè applicable must be provided.
No
experimental
use
of
a
sequestering
agent
may
be
tried
without previous Agency approval.
b.
The provisions of Rule 304 B
3 notwithstanding,
compliance
with
the
maximum
allowable
concentration
for
nitrate
shall
be
determined
on
the
basis
of
the
mean
of
two
analyses.
47-460

—9—
When a level exceeding
the
maximum
allowable
concentration
for
nitrate
is
found,
a
second
analysis
shall
be
initiated
within
24
hours,
and
if
the
mean
of
the
two
analyses
exceeds
the maximum allowable concentration, the owner or operator
of the public water supply shall report his findings to the
State
pursuant
to
Rule
310
B
and
shall
notify
the
public
pursuant to Rule 313
D.
c.
Turbidity in drinking water shall not exceed one turbidity
unit
at
the
point where water enters the distribution system
unless
it
can
be
demonstrated
that
a
higher
turbidity
not
exceeding
5
NTU
does
not:
(1)
interfere
with
disinfection, or
(2)
cause tastes and odors upon disinfection, or
(3)
prevent the maintenance of an effective disinfection
agent throughout the distribution system, or
(4)
result in deposits in the distribution system, or
(5)
cause customers to question the safety of their drinking
water.
The provisions of Rule 304 B
3 notwithstanding,
if a turbidity
measurement
exceeds
the
maximum
allowable
concentration,
a
resample
must
be
taken
as
soon
as
practicable,
and
preferably
within
one
hour.
If
the
check
sample
confirms
that
the
standard has been exceeded, the Agency must be notified
within 48 hours.
The value of the check sample shall be
the value used in calculating the monthly average.
If
the monthly average of the daily samples taken in accord-
ance with Rule 309 D exceeds the maximum allowable con-
centration, or if the average of two samples taken on
consecutive days exceeds
5 NTU, the owner or operator of
the public water supply shall report to the Agency and
notify the public as directed in Rule 310 B and 313 D.
d.
Those counties of the State north of and including the
counties of Henderson, McDonough,
Fulton,
Tazewell, McLean,
Ford and Iroquois shall have a maxiTnum allowable concen-
tration of 2.0 mg/l.
e.
Community water supplies serving 75,000 or more individuals
shall comply with this standard by the effective date of
these regulations.
Community water supplies serving 10,000
to
74,999
individuals
shall
comply
with
this standard by
November
5,
1983.
This
standard
does
not
apply
to
supplies
serving
less
than
10,000
individuals.
C.
Radiological
Quality
The
text
of
Subsection
C
remains
unchanged
from
present
rules.
47-461

—10—
309
Frequency of Sampling
A.
Bacteriological
Text of Subsection
A remains unchanged.
B.
Chemical
1.
Community Water Supplies
——
Surface Water Sources
raw
and
finished
water
is
to
be
submitted
at
least
annually
to
the
Agency
for
chemical
analysis.
?rem
wa~e~—se~~ee.
~
saMplc3 to thc Agency fof—ai~ays—a~-4eas~-eve~y
~we—years~--~
er-may -be in—excess e~he--e~--~a~e
pe~enay—4gefe~s—sees—±s-spee~e~
~e—~he
b.
Public water supplies serving over 10,000 indi-
viduals shall submit at least
four samples per
treatment
plant
per
quarter
for
analysis
or
analytical
results
from
a certified laboratory
for
to+a1
trihalomethanes
to
the
Agency.
After
results
of
four
consecutive
quarters
demonstrate
consistent total
trihalomethane concentrations
below the Maximum Allowable Concentration, and
upon written application by the public water
supply the Agency may reduce the sample
fre~uencyto one sample per quarter until the
Maximum Allowable Concentration is exceeded
or until
a
~ignifir~nt
change in source or
treatment method is made.
2.
Community Water Supplies
——
Ground Water Sources
a.
A minimum of one representative sample of the
finished water
is to he submitted at least
every three years to the Agency for chemical
analysis.
eey-wa~ef-supp~ee-wh4~e~
e—a—gfe~—wa~er—setifee-afe—~e—stibm~
e~ch-~mplcsto ~
b.
Public water supplies serving 10,000 individuals
or more shall submit at least one sample per
treatment plant
for maximum total trihalomethane
a.
47-462

—11—
potential analysis.
After written request by
the public water supply and the determination
by the Agency that the results of the sample
and local conditions indicate that the supply
is not likely to approach or exceed the Maximum
Allowable Concentration, the public water supply
shall continue to submit one annual sample per
treatment plant, or report of analysis by a
certified laboratory to the Agency.
If the
sample exceeds the Maximum Allowable Concentration
or cannot be analyzed for maximum total trihalo—
methane potential, the public water supply shall
submit samples in accordance with Sec.
309 B
1.
3.
Significant changes in water sources or treatment
will require testing in accordance with Sec.
309 B
1 b.
4.
If the result of an analysis made pursuant to the
reduced monitoring schedules provided by this Rule
indicates that the level of Total Trihalomethanes
exceeds the maximum allowable concentration listed
in Table
I, the owner or operator of the public
water supply shall initiate analysis of one check
sample promptly after the exceedance is
reported
to the public water supply.
If the check sample
confirms that the level of Total Trihalomethanes
exceeds the maximum allowable concentration, the
public water supply shall sample in accordance
with the frequency set out in Rule 309 B
1 b,
for
at least one year.
5.
Sampling for specific parameters may be required by
the Agency more frequently whenever there is reason
to believe that these parameters are or may be in
excess of the limits listed in Table
I or if the
presence of other dangerous or potentially
dangerous substances is suspected.
6.
Non—Community water supplies shall
submit represent-
ative samples of raw and finished water to the
Agency
laboratory
for
chemical
analysis
at
frequencies required by the Agency.
C.
Monitoring Frequency for Radioactivity in Community
Water
Supplies
1.
Monitoring requirements for gross alpha
particle
activity,
radium—226
and
radium—228.
a.
Compliance
shall
be
based
on the analysis
of
an
annual
composite
of
four
consecutive
quarterly
samples
or the average of the
analysis
of
four
samples
obtained
at
quarterly
intervals.

—12—
(1)
A gross alpha particle activity
measurement may be substituted for
the required radium-226 and radium—
228 analysis, provided that the
measured
gross
alpha
particle
activity
does
not
exceed
5
pCi/l
at
a
confidence
level
of
95
percent
(~6~1.96
c’
where
0
is the standard deviation of the net
counting
rate of the sample).
In
localities where radium—228 may be
present in drinking water radium—226
and/or radium-228 analyses may be
required by the Agency when the gross
alpha particle activity exceeds
2 pCi/l.
(note:
the
remaining
text
of
Subsection
C
remains
unchanged
from
the present rules.
IT IS SO ORDERED.
I,
Christan
L.
Moffett,
Clerk
of
the
Illinois
Pollution
Control Board hereby certify that the above Order was adopted
on the
)~-~dayof
/~
,
1982 by a vote of
/~2~-.-~
I.
~~Z~//c~
Christan L. Moffett, ClerkI
Illinois
Pollution
Control
Board

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