Section 303.446  Boron Water Quality Standard for Segments of the Sangamon River and the Illinois River

The general use water quality standard for boron set forth in 35 Ill. Adm. Code 302.208(g) shall not apply to segments of the Sangamon River and the Illinois River (described below) that receive discharge from Outfall 007 of the Spring Creek Sewage Treatment Plant located at 3017 North 8^th Street, Springfield, Illinois, owned by the Springfield Metro Sanitary District.  Boron levels in those river segments must meet the following water quality standards for boron:

a)         11.0 mg/L in the Sangamon River from Outfall 007 (Latitude:  39° 51' 37.234" North, Longitude:  89° 38' 30.082" West) to 182 yards downstream from the confluence of Spring Creek with the Sangamon River (Latitude:  39° 51' 42.595" North, Longitude:  89° 38' 30.089" West);

b)         4.5 mg/L in the Sangamon River from 182 yards downstream of the confluence of Spring Creek with the Sangamon River (Latitude:  39° 51' 42.595" North, Longitude:  89° 38' 30.089" West) to the confluence of Salt Creek with the Sangamon River (Latitude:  40° 7' 33.009" North, Longitude:  89° 49' 40.224" West), a distance of 39.0 river miles;

c)         1.6 mg/L in the Sangamon River from the confluence of Salt Creek with the Sangamon River (Latitude:  40° 7' 33.009" North, Longitude:  89° 49' 40.224" West) to the confluence of the Sangamon River with the Illinois River (Latitude:  40° 1' 20.995" North, Longitude:  90° 25' 59.451" West), a distance of 36.1 river miles; and

d)         1.3 mg/L in the Illinois River from the confluence of the Illinois River with the the Sangamon River (Latitude:  40° 1' 20.995" North, Longitude:  90° 25' 59.451" West) to 100 yards downstream of the confluence of the Illinois River with the Sangamon River (Latitude:  40° 1' 20.197" North, Longitude:  90° 26' 3.205" West).

(Source:  Added at 33 Ill. Reg. 7903, effective May 29, 2009)