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8/7/2019 Print Approved Listing <br />Listing ID: 45282 1 <br />Main Listina Information <br />Listing ID: 45282 <br />Waterbody Name: UNNAMED CREEK (TRIB TO <br />SWAMP CREEK) <br />WQI Project: Swamp Creek Bacteria TMDL <br />Designated Use: None Assigned <br />Assessment Unit ID: 17110012000565 <br />2014 Category: <br />2012 Category: <br />2008 Category: 4A <br />2004 Category: 3 <br />On 1998 303(d) List?: N <br />On 1996 303(d) List?: N <br />WRIA: 8 - Cedar-Sammamish <br />Waterbody ID (WBID): None Assigned Waterbody Class: RAA <br />Town/Range/Section (Legacy): 28N-4E-26 <br />Location ID: [SCMD] -- In water year 2001, 1 of 7 sample values (14%) showed an excursion of <br />the % criterion for this waterbody (100 cfu/100mL). The geometric mean of 41.8 does not exceed <br />the geometric mean criterion (50 cfu/100mL). <br />Location ID [SCMD] -- 4 of 7 (57.1 %) of samples collected in 2001 exceed the percent criterion <br />(100 col/100mL) <br />Location ID [SCMD] -- A geometric mean of 83.50 col/100mL calculated from 7 samples collected <br />in 2001 exceeds the geometric mean criterion (50 col/100mL) <br />Location ID [SCMD] -- 9 of 11 (81.8%) of samples collected in 2000 exceed the percent criterion <br />(100 col/100ml-) <br />Location ID [SCMD] -- A geometric mean of 330.94 col/100mL calculated from 11 samples <br />collected in 2000 exceeds the geometric mean criterion (50 col/100mL) <br />Location ID [SCMD] -- 4 of 4 (100.0%) of samples collected in 1999 exceed the percent criterion <br />(100 col/100ml-) <br />Location ID [SCMD] -- Fewer than five samples were available in <br />mean was not calculated for this period <br />therefore a geometric <br />Policy 1-11 was revised in July 2012 to specify that bacteria is <br />assessed according to water year (Oct 1-Sept 30) from the <br />previous assessment period of calendar year. The water year Jessica 10/2/2014 Public <br />assessment is only applied to newly assessed data. Therefore, Archer <br />this listing contains data assessed by both water year and <br />calendar year. <br />Impairment was determined by exceedance of the percent Jessica 10/2/2014 Public <br />criterion in water year(s) 2001. Archer <br />Within the Fecal Coliform Bacteria TMDL for Swamp Creek, <br />approved by EPA 8/16/06. -kk <br />User Studv ID: <br />User Location ID: <br />https:Happs.ecology.wa.gov/approvedwga/ApprovedPrintListing.aspx?LISTING_]D=45282 1/2 <br />