E. coli exceedance – St. Louis County

Location: MSD New Lower Meramec Wastewater Treatment Facility

Sample taken: 3/15/2016 5:10:00 PM

Comments: Grab; Upstream

Results: 461.1 mpn/100ml

Location: MSD New Lower Meramec Wastewater Treatment Facility

Sample taken: 3/15/2016 5:30:00 PM

Comments: Grab; Downstream

Results: >2419.6 mpn/100ml

Location: Meramec River

Sample taken: 3/16/2016 8:05:00 AM

Comments: Downstream Meramec 1 site, sample collected at the Gravois Mill road bridge, 0.2 miles downstream from Fenton WWTF outfall. Sample was collected using depth and velocity integrated sample consisting of 5 aliquots along a transect.

Results: 866.4 mpn/100ml

Location: Meramec River

Sample taken: 3/16/2016 9:28:00 AM

Comments: Downstream Meramec 7 site, sample collected near Frisco Rd. end, 11.6miles downstream from Fenton WWTF outfall. Sample was collected using depth and velocity integrated sample consisting of 5 aliquots along a transect.

Results: 1119.9 mpn/100ml

Location: Meramec River

Sample taken: 3/16/2016 8:59:00 AM

Comments: Downstream Meramec 4 site, sample collected near Hwy. 21 bridge, 5.3 miles downstream from Fenton WWTF outfall. Sample was collected using depth and velocity integrated sample consisting of 5 aliquots along a transect.

Results: 920.8 mpn/100ml

Location: Meramec River

Sample taken: 3/16/2016 9:15:00 AM

Comments: Downstream Meramec 6 site, sample collected near Lemay Ferry Rd., 9.4 miles downstream from Fenton WWTF outfall. Sample was collected using depth and velocity integrated sample consisting of 5 aliquots along a transect.

Results: 1299.7 mpn/100ml

Location: Meremec River

Sample taken: 3/16/2016 8:42:00 AM

Comments: Downstream Meramec 3 site, sample collected near Corisande Hill Rd. end, 3.7 miles downstream from Fenton WWTF outfall. Sample was collected using depth and velocity integrated sample consisting of 5 aliquots along a transect.

Results: 920.8 mpn/100ml

Location: Meramec River

Sample taken: 3/16/2016 9:40:00 AM

Comments: Downstream Meramec 8 site, sample collected near Hwy. 231 bridge, 13.3 miles downstream from Fenton WWTF outfall. Sample was collected using depth and velocity integrated sample consisting of 5 aliquots along a transect.

Results: 1046.2 mpn/100ml

Location: Meramec River

Sample taken: 3/16/2016 8:29:00 AM

Comments: Downstream Meramec 2 site, sample collected near Schmussler Rd. end, 1.7 miles downstream from Fenton WWTF outfall. Sample was collected using depth and velocity integrated sample consisting of 5 aliquots along a transect.

Results: 920.8 mpn/100ml

Location: Meramec River

Sample taken: 3/16/2016 9:04:00 AM

Comments: Downstream Meramec 5 site, sample collected upstream of I-55 bridge, 7.5 miles downstream from Fenton WWTF outfall. Sample was collected using depth and velocity integrated sample consisting of 5 aliquots along a transect.

Results: 866.4 mpn/100ml

Location: Meramec River

Sample taken: 3/16/2016 8:42:00 AM

Comments: Duplicate of sample #161785 at site DS3. Sample was collected using depth and velocity integrated sample consisting of 5 aliquots along a transect.

Results: 866.4 mpn/100ml

Location: Meramec River

Sample taken: 3/16/2016 8:19:00 AM

Comments: : Downstream Meramec 1 site, sample collected near George Winter Park, 0.8 miles downstream from Fenton WWTF outfall. Sample was collected using depth and velocity integrated sample consisting of 5 aliquots along a transect.

Results: 2014.0 mpn/100ml