Section 5
Beaucoup Creek Watershed Data Review
v 5-13
FINAL REPORT
Table 5-16 Effluent Data from Washington Conservation Area WWTP (USEPA 2002b)
Facility Name
Period of Record
Permit Number Constituent Average Value
Average
Loading (lb/d)
Washington County
Conservation Area WWTP
Flow (mgd) 0.01 –
04/96 – 07/01 Total Ammonia as N (mg/L) 5.5 1.5
NPDES# IL0048577 CBOD5(mg/L) 17.4 2.0
The remaining three WWTPs in the watershed discharge to stream segments within the
Beaucoup Creek Watershed as shown in Figure 5-5. Two of these facilities discharge
to segment NC10. The third drains to a tributary of an unimpaired section of Beaucoup
Creek. Effluent water quality data were available for each plant from the PCS database
(USEPA 2002b). Table 5-17 lists the period of record for each plant and the average
flow, ammonia concentrations, and CBOD5 concentrations over the period of record.
Water quality data were not available for multiple months at the Lake Sallateeska plant
over the period of record because there was no discharge from the plant during these
months. The low effluent flow from each plant makes the loadings to Beaucoup Creek
Watershed stream segments negligible in comparison to loadings from the remainder
of the watershed. Therefore, loadings from the plants will not be included in modeling
efforts.
Table 5-17 Effluent Data from WWTPs Discharging to Beaucoup Creek Stream Segments
Facility Name
Period of Record
Permit Number Constituent
Average
Value
Average Loading
(lb/d)
Pickneyville WWTP #1 Flow (mgd) 0.7 –
04/96 - 06/02 Total Ammonia as N (mg/L) 0.2 1.0
NPDES# IL0021997 CBOD5(mg/L) 3.0 18.5
Lake Sallateeska Baptist Camp Flow (mgd) 0.001 –
06/96 - 03/01 Total Ammonia as N (mg/L) 6.8 –
NPDES# IL0045195 CBOD5(mg/L) 12.4 0.1
Pickneyville East WWTP Flow (mgd) 0.2 –
01/99 - 06/02 Total Ammonia as N (mg/L) 0.2 0.2
NPDES# IL0050822 CBOD5(mg/L) 3.0 3.9
5.1.7.2 Coal Mines and Oil and Gas Fields
Acid mine drainage from coal mines could contribute to manganese, sulfates, and TDS
concentrations in a watershed. Data from the Illinois Natural Resources Geospatial
Data Clearinghouse was reviewed for coal mines, oil fields, and non-coal mines within
the Beaucoup Creek Watershed from the following references (full citation provided in
Section 11):
Chenoweth, Cheri, 1998, Areas Mined for Springfield (No. 5) Coal in Illinois
Stiff, Barbara J., 1997, Areas Mined for Coal in Illinois - Part 1
Stiff, Barbara J., 1997, Areas Mined for Coal in Illinois - Part 2
