ILLINOIS POLLUTION CONTROL

BOARD

#R71-2: Revisions of Mississippi River Standards for Turbidity,

Dissolved Solids and Inorganic Solids

(As adopted March 17,

1971)

Amend SWB-12 and 13 as follows:

1.)

Add to Rule

1.04 of SWB-l2

the

following:

“e).

Dissolved solids:

Not to exceed 500 mg/l as

a monthly average

value nor exceed

750 mg/i at anytime.”

2.)

Add to Rule 1.05 of SWB-l3 the following:

“13.

Dissolved Solids

Not to exceed 500 mg/i as

a monthly average

value,

nor exceed 750 mg/i at anytime.”

3.)

Add

to Rule 2,05 of SWB-i3 the following:

“12,

Dissolved Solids

Not to exceed 500 mg/i

as

a monthly average value,

nor exceed 750 mg/l at anytime.”

4,)

Repeal section

a of paragraph

8 of Rule

2.05 in SWB-i3

and in its place substitute the following:

“a,

There shall be no man—made deposits of organic

or inorganic

solids on the stream bed.”

5,)

Add to Rule

2.05 of SWB-l3

the following:

“13,

Turbidity

There shall be no turbidity of other than natural

origin that will cause substantial visible contrast

with

the natural appearance of or interfere with

any legitimate uses of th~stream.”

6.)

Add to Rule 1.03 of SWB-12

the following:

“e).

Free from turbidity of other than natural origin

that will cause substantial visible contrast with

the natural appearance of or inter~~ewith any

legitimate uses

of

the stream,”

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