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<br />AMAZON DIVERSION CHANNEL - TOTAL SUSPENDED SOLIDS
<br />In 2013, the City shows a mean pollutant load reduction (over the no-BMP condition) of
<br />approximately 35,122 pounds, or 1.3% percent. The lower value of the pollutant reduction
<br />range is 16,018 pounds, and the upper value is 66,410 pounds.
<br />This amount of pollutant reduction is not sufficient to meet the WLA during the current permit
<br />term. In the future, a further reduction of approximately 1,448,660 pounds from the mean
<br />pollutant load would be needed; however, the difference between the LVR of the pollutant load
<br />with BMPs present and the WLA is about 605,121 pounds. It may be reasonable to assume that
<br />implementation of non-structural BMPs could potentially reduce the overall mean TSS load
<br />close to the WLA because BMPs tazgeting TSS reductions, such as catch basin cleaning, street
<br />sweeping and erosion control, were not modeled and are not portrayed in these results.
<br />The City of Eugene's total suspended solids benchmark for the Amazon Diversion Channel
<br />(i.e. the estimated pollutant load reduction as a result of BMP implementation) is the range
<br />between 16,018 pounds (the lower value) and 66,410 pounds (the upper value).
<br />Figure 7-6. Annual TSS Loading - Amazon Diversion Channel
<br /> Amazon Diversion Channel MS4 Area
<br /> Estimated TSS Loading
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<br /> (2008) - No (2008) - (2013) - No (2013) -
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<br />10-62
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