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<br />DISTANCE FROM MOUTH. IN KILOMETERS
<br />290 280 270
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<br />300
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<br />3500
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<br />YM-4
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<br />YM-Il
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<br />SITE NUMBER
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<br />3000
<br />
<br />I
<br />
<br />MAXIMUM OIlSERVEo
<br />CONCENTRATION
<br />
<br />AVERAGE OIlSERVEo
<br />CONCENTRATION
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<br />2500
<br />
<br />MINIMUM OIlSERVEo
<br />CONCENTRATION
<br />
<br />+
<br />
<br />ONE SAMPLE OR NO
<br />VARIATION
<br />
<br />2000
<br />
<br />COMPUTED BY
<br />U.S. GEOLOGICAL SURVEY
<br />SURVEY MODEL
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<br />YM-5
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<br />1500
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<br />1000
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<br />180 175 110
<br />DISTANCE FROM MOUTH. IN MILES
<br />
<br />155
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<br />190
<br />
<br />160
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<br />165
<br />
<br />Figure 22.--Computed versus observed concentrations of total-coliform bacteria in tbe Yampa
<br />September 23-24,1975 (U.S. Geological Survey and Pioneer-I models).
<br />
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