TMDL Document for MANLEY CREEK

TMDL ID:	34044	TMDL Name:	MANLEY CREEK
State/Tribe:	Kansas	TMDL Date:	02/28/2008
EPA Action:	EPA Approved

TMDL Documents

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TMDL Document

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TMDL Pollutant: Biology

Total Waste Load Allocation:	.17		Total Load Allocation:	.08
Explicit Margin Of Safety:			Implicit Margin Of Safety:	Y
Units for Total Waste Load Allocation and Total Load Allocation:	TONS/DAY		TMDL Pollutant Source Type:	Point/Nonpoint Source
TMDL End Point:	BIOLOGICAL CRITERIA FOR KANSAS STREAMS ARE BASED ON THE FOLLOWING MULTI-METRIC INDICES: MACROINVERTEBRATE BIOTIC INDEX (MBI), KANSAS BIOTIC INDEX (KBI), EPHEMEROPTERA, PLECOPTERA, TRICHOPTERA (EPT) INDEX AND %EPT ABUNDANCE. THE SUBMITTAL TARGETS ARE SET TO RESULT IN THE ATTAINMENT OF THESE INDICES. SOUTH FORK BIG NEMAHA RIVER LC IS SET BY THE USE OF THE LOAD DURATION CURVE BASED ON THE TOTAL SUSPENDED SOLIDS (TSS) CONCENTRATIONS MEASURED AT VARIOUS PERCENTILES OF FLOW IN A PAIRED REFERENCE STREAM TO ADDRESS THE SUSPENDED SOLIDS NARRATIVE STANDARD. THE TSS TARGET IS USED BECAUSE EPT GROUPS LIKE TO UTILIZE COARSE SUBSTRATES AS HABITATS IN THE STREAM. EXCESS AMOUNT OF TSS LOAD THAT DEPOSITS ON THE SUBSTRATES IMPOSES A GREAT PHYSICAL THREAT TO THEIR LIVING CONDITIONS. AT MEDIAN FLOW, 50TH PERCENTILE OF FLOW EXCEEDANCE, THE LC IS APPROXIMATELY 3.87 TONS/DAY OF TSS. EPA AGREES THAT MEETING THE LC WILL RESULT IN THE ATTAINMENT OF WQS. THE STATE OF KANSAS DOES NOT HAVE A NUMERIC CRITERION FOR TSS IN THEIR WQS. THE LINKAGE OF THE TARGETED POLLUTANTS TO THE BIOLOGICAL IMPAIRMENT IS ESTABLISHED. TO DEVELOP THIS LINKAGE THE SUBMITTAL USES THE TSS LOAD FOR A SIMILAR RIVER MEETING ITS AQUATIC LIFE DESIGNATED USE AS A REFERENCE. THE CHIKASKIA RIVER IS THE STREAM CHOSEN AS A REFERENCE AND ITS CURRENT LOAD DURATION CURVE IS THE TARGET FOR THE SOUTH FORK BIG NEMAHA RIVER TMDL. THE SUBMITTAL RECOGNIZES THAT THE RELATIONSHIP BETWEEN BIOTIC INDICES AND TSS IS NOT YET QUANTIFIED AND SO THE REFERENCE APPROACH IS USED. THERE IS AN INDIRECT, YET UN-QUANTIFIED RELATIONSHIP BETWEEN SEDIMENT LOADING AND BIOLOGICAL INTEGRITY. DECREASED SEDIMENT LOADS, INDICATIVE OF IMPROVED WATER QUALITY, SHOULD RESULT IN BETTER AQUATIC COMMUNITIES. THE ABILITY OF BIOLOGICAL DATA TO INTEGRATE THE VARIOUS PHYSICAL AND CHEMICAL IMPACTS OF THE ENTIRE WATERSHED ON THE AQUATIC COMMUNITY DEFIES ALLOCATION OF SPECIFIC SUSPENDED SOLID LOADS BETWEEN POINT AND NONPOINT SOURCES. THE BIOLOGICAL INTEGRITY IS A FUNCTION OF MULTIPLE FACTORS, THE INITIAL POLLUTION LOAD REDUCTION RESPONSIBILITY WILL BE TO DECREASE THE AVERAGE CONDITION OF SEDIMENT OVER THE RANGE OF FLOWS ENCOUNTERED ON THE SOUTH FORK BIG NEMAHA RIVER. THE DESIRED TSS CONCENTRATIONS SHOULD BE SET TOWARDS THE TSS LEVELS OBSERVED ACROSS THE SEASONS AT CHIKASKIA RIVER TO IMPROVE STREAM HABITAT CONDITIONS FOR MACROINVERTEBRATE COMMUNITIES. FOR THE INTERIM, TSS LEVELS SHOULD BE AT CONCENTRATIONS ASSOCIATED WITH FULL SUPPORT COMPOSITE BIOLOGICAL INDEX VALUES.

NPDES Allocation for Pollutant: Biology
NPDES ID	Other Non PCS Identification	Waste Load Allocation	Units
KS0093467		.003	TONS/DAY

Listed Water Causes of Impairment for Biology Click on the underlined Waterbody ID for a Waterbody Report. Click on the underlined "Waterbody Map" literal for a map of the Assessment Unit.
Waterbody ID	Waterbody Name	Map	Cycles Listed	Cause(s) of Impairment Addressed
KS-MO-07-W027_ 14	MANLEY CREEK	Data Unavailable		Unlisted but Impaired

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TMDL Pollutant: Suspended Solids

Total Waste Load Allocation:	.17		Total Load Allocation:	.08
Explicit Margin Of Safety:			Implicit Margin Of Safety:	Y
Units for Total Waste Load Allocation and Total Load Allocation:	TONS/DAY		TMDL Pollutant Source Type:	Point/Nonpoint Source
TMDL End Point:	WATER QUALITY STANDARD: SUSPENDED SOLIDS - NARRATIVE: SUSPENDED SOLIDS ADDED TO SURFACE WATERS BY ARTIFICIAL SOURCES SHALL NOT INTERFERE WITH THE BEHAVIOR, REPRODUCTION, PHYSICAL HABITAT OR OTHER FACTOR RELATED TO THE SURVIVAL AND PROPAGATION OF AQUATIC OR SEMI-AQUATIC OR TERRESTRIAL WILDLIFE. (KAR 28-16-28E(C)((2)(B)). THE WQS IS A NARRATIVE, AND THE NUMERIC BIOLOGICAL INDICE TARGETS ARE INDIRECTLY RELATED TO A NUMERIC TRANSLATION OF THE NARRATIVE STANDARD. DESIGNATED USES FOR SOUTH FORK BIG NEMAHA RIVER MAIN SEGMENTS (3, 15, 16) ARE: PRIMARY CONTACT RECREATION "C" ON MAIN STEM SEGMENT 15 AND SECONDARY CONTACT RECREATION ON THE REMAINING MAIN STEM SEGMENTS (3 AND 16) AND TRIBUTARIES. OTHER DESIGNATED USES FOR MAIN STEM SEGMENTS INCLUDE EXPECTED AQUATIC LIFE SUPPORT AND DOMESTIC WATER SUPPLY, FOOD PROCUREMENT, GROUND WATER RECHARGE, INDUSTRIAL WATER SUPPLY AND LIVESTOCK WATERING. THE IMPAIRED USE IS EXPECTED AQUATIC LIFE ON THE MAIN STEM SEGMENTS. THE SUBMITTAL USES THE NARRATIVE SUSPENDED SOLIDS STANDARD TO ADDRESS THE BIOLOGICAL INDICES USED TO DETERMINE WHETHER THE WATER BODY IS MEETING THE AQUATIC LIFE USE. THE NUMERIC EXPRESSION OF THE NARRATIVE STANDARD WAS DERIVED USING A PAIRED WATERSHED APPROACH. THE TARGET IS THE CURRENT LOAD DURATION CURVE OF THE REFERENCE STREAMS. THE DESIRED ENDPOINT IS TO ACHIEVE AN AVERAGE COMPOSITE VALUE OF 1.49 OR LESS, BASED ON KBI, MBI AND EPT OVER 2008-2012. ACHIEVEMENT OF THIS ENDPOINT WOULD BE INDICATIVE OF FULL SUPPORT OF THE AQUATIC LIFE USE IN THE STREAM REACH.

NPDES Allocation for Pollutant: Suspended Solids
NPDES ID	Other Non PCS Identification	Waste Load Allocation	Units
KS0090191		0	TONS/DAY

Listed Water Causes of Impairment for Suspended Solids Click on the underlined Waterbody ID for a Waterbody Report. Click on the underlined "Waterbody Map" literal for a map of the Assessment Unit.
Waterbody ID	Waterbody Name	Map	Cycles Listed	Cause(s) of Impairment Addressed
KS-MO-07-W027_ 14	MANLEY CREEK	Data Unavailable	1996	Suspended Solids

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