| TMDL End Point: |
KANSAS WQS GEOMETRIC MEAN OF AT LEAST FIVE SAMPLES OF E. COLI COLLECTED IN SEPARATE 24-HOUR PERIODS WITHIN A 30-DAY PERIOD SHALL NOT EXCEED THE FOLLOWING CRITERIA BEYOND THE MIXING ZONE.
PRIMARY CONTACT RECREATION ¿ CLASS B: 262 CFU/100 ML, FROM APRIL TO OCTOBER 31; 2358 CFU/100 ML FROM NOVEMBER 1 TO MARCH 31.
PRIMARY CONTACT RECREATION ¿ CLASS C: 427 CFU/100 ML, FROM APRIL 1 TO OCTOBER 31; 3843 CFU/100 ML FROM NOVEMBER 1 TO MARCH 31.
SECONDARY CONTACT RECREATION ¿ CLASS B: 3843 CFU/100 ML FROM JANUARY 1 TO DECEMBER 31 (KAR 28-16-28E(C)(7)
(D&E)).
DESIGNATED USES:
PRIMARY CONTACT RECREATION ¿ CLASS B: ALL MAIN STEM KANSAS RIVER SEGMENTS, WAKARUSA RIVER AND KILL AND TURKEY CREEKS.
PRIMARY CONTACT RECREATION ¿ CLASS C: MUD, CAPTAIN, STRANGER, CEDAR, MILL, LITTLE KAW, WOLF, AND LITTLE TURKEY CREEKS
SECONDARY CONTACT RECREATION ¿ CLASS B: OAKLEY, STONE HOUSE, BALDWIN, BUCK, KENT, EAST MISSION, TOOLEY, MUNCIE, BARBER AND MATTOON CREEKS.
THIS TMDL IS BASED ON THE NUMERIC WATER QUALITY FOR E. COLI BACTERIA.
DUE TO THE NATURE OF POINT SOURCE VERSUS NONPOINT SOURCE CONTRIBUTIONS TO E. COLI LOADING, A CONTINUOUS CURVE CALCULATED FROM DISCRETE LCS OVER A RANGE OF FLOW CONDITIONS WERE USED TO LINK E. COLI WATER QUALITY CRITERIA FOR E. COLI LOADS TO SOURCES. NONPOINT CONTRIBUTIONS TO THE LOAD ARE STRONGLY CORRELATED WITH HIGH FLOW CONDITIONS AND RUNOFF FROM RAINFALL EVENTS. BACTERIA LEVELS WILL IMPROVE AS DISINFECTION REQUIREMENTS ARE INSTALLED ON UPGRADED WASTEWATER TREATMENT FACILITIES, LONG TERM COMBINED SEWER OVERFLOW (CSO) CONTROL PLANS ARE IMPLEMENTED IN KANSAS CITY AND STORMWATER BMPS ARE INSTALLED IN TRIBUTARY WATERSHEDS. POINT SOURCE CONTRIBUTIONS WILL DOMINATE THE LOADING WHEN THE STREAM FLOW IS LOW. THE TMDL IS BASED ON THE NUMERIC WATER QUALITY CRITERIA FOR E. COLI BACTERIA. THE TARGETED CRITERION IS DIRECTLY LINKED TO KANSAS WQS.
THERE ARE SEVERAL NATIONAL POLLUTION DISCHARGE ELIMINATION SYSTEM (NPDES) PERMITTED FACILITIES DISCHARGING WASTEWATER DIRECTLY INTO THE KANSAS RIVER OR BELOW TRIBUTARY MONITORING SITES. THE TABLE BELOW LISTS THE DISCHARGING MUNICIPAL AND INDUSTRIAL FACILITIES THAT POTENTIALLY CONTRIBUTE BACTERIA. NEARLY ALL OF THE FACILITIES HAVE INSTALLED DISINFECTION TREATMENT IN THEIR OPERATIONS AND HAVE FECAL COLIFORM BACTERIA LIMITS ESTABLISHED UNDER THEIR NPDES PERMITS.
POINT SOURCES ARE IDENTIFIED AS CONTRIBUTING TO THE E. COLI IMPAIRMENT WITHIN ALL OF THE MAIN STEM SEGMENTS; MUNICIPAL STORM WATER DISCHARGES, UNPERMITTED SANITARY OR INDUSTRIAL DISCHARGES (SANITARY SEWER OVERFLOWS ¿SSOS), AND FAILING INDIVIDUAL TREATMENT SYSTEMS ARE ALSO ACKNOWLEDGED. MAPS SHOWING NPDES PERMITTED FACILITIES, ANIMAL FEEDING OPERATIONS AND INDUSTRIAL FACILITIES ARE PROVIDED WITHIN THE TMDL.
NONPOINT SOURCES INCLUDE: FAILING ON-SITE WASTEWATER SYSTEMS, RUNOFF FROM LIVESTOCK PASTURES, IMPROPER OR OVER APPLICATION OF BIOSOLIDS (WASTEWATER TREATMENT FACILITY SLUDGE), SEEPAGE OF MANURE AND UNPERMITTED URBAN STORM WATER. NATURAL SOURCES WERE ALSO CONSIDERED FROM WILDLIFE CONTRIBUTIONS.
EPA CONCURS THAT ALL SOURCES (POINT; PERMITTED, UNPERMITTED, ILLICIT, AND NONPOINT) HAVE BEEN CONSIDERED.
REFER TO THE TMDL FOR SPECIFIC LOADING INFORMATION. |
![[logo] US EPA](http://www.epa.gov/epafiles/images/logo_epaseal.gif){kind=logo}