Section 620.430 Groundwater Quality Standards for Class III: Special Resource Groundwater

Section 620

TITLE 35: ENVIRONMENTAL PROTECTION

SUBTITLE F: PUBLIC WATER SUPPLIES

CHAPTER I: POLLUTION CONTROL BOARD

PART 620 GROUNDWATER QUALITY

SECTION 620.430 GROUNDWATER QUALITY STANDARDS FOR CLASS III: SPECIAL RESOURCE GROUNDWATER

Section 620.430  Groundwater

Quality Standards for Class III:  Special Resource Groundwater

Except due to natural causes,

concentrations of inorganic and organic chemical constituents and ranges of pH

must not exceed the standards specified in Section 620.410.  This prohibition

does not apply to:

a)         Chemical constituents for which the Board has adopted standards

under Section 620.260; or

b)         Class

III Special Resource Groundwater established under Section 620.230(b) and

depicted in the Environmental Register, but only at the dedicated nature

preserves identified in this subsection (b), and only for the conditions at

those preserves for which standards are specified in this subsection (b).

1)         The

following standards apply for Pautler Cave Nature Preserve and Stemler Cave

Nature Preserve (Environmental Register, May 2005, No. 611), Fogelpole Cave

Nature Preserve (Environmental Register, May 2003, No. 587), and Armin Krueger

Speleological Nature Preserve (Environmental Register, December 2009, No. 666):

Chloride

20 mg/L

pH

range of 7.0-9.0 Standard Units

2)         The

following standard applies for Cotton Creek Marsh Nature Preserve and Spring

Grove Fen Nature Preserve (Environmental Register, July 2012, No. 697):

Chloride

45 mg/L