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| Title | Longview Drainage System: Part 1 Water Quality Assessment, and Part 2 Chemical Screening of Sediment Samples | |||
| Month-Year Published | May 1993 | |||
| Online Availability |
2676 kilobytes, requires version 4.0 or later of Adobe Acrobat Reader Software get Acrobat Reader
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| Short Description |
On September 14 and November 16, 1992, surveys were conducted to assess the water quality of a portion of the Longview Ditches. (Also see abstract below) | |||
| Publication Number | 93-e03 | |||
| Author(s) | Cusimano, B., Johnson A., and D. Davis | |||
| Print Availability |
Not maintained in stock. Copy must be made from archive version.
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| Number of pages | 33 + app (67 total) | |||
| Keywords | assessment, cadmium, chemical, copper, dangerous waste regulation, dissolved oxygen, drainage, fecal coliform, lead, mercury, metals, model, nonpoint, regulation, sediment, soil, study, total suspended solids, toxics, TSS, urban, waste, water quality, zinc | |||
| Subject Waterbodies |
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| Abstract | Long Description |
Part 1: Overall, the ditches' aesthetic values were found to be impaired by materials which offend the senses. The water in the ditches was found to violate water quality standards for fecal coliform, dissolved oxygen, and turbidity throughout the study area. Levels of iron, total suspended solids (TSS), and Escherichia coli (E. coli) were also high. In addition, metals such as copper, lead, mercury, zinc, and possibly cadmium exceeded water quality criteria, at least at one sampling station. These findings, which are consistent with historical water quality assessments, support reducing or eliminating point and nonpoint pollutants which contribute to the degraded water quality conditions in the ditches. Part 2: Chemical analyses were conducted on sediment samples collected in November 1992 from ditches in the Longview Drainage System. The results were compared to similar surveys of other urban areas, freshwater sediment criteria, soil clean-up levels in the Model Toxics Control Act, and the State Dangerous Waste Regulations. Based on these comparisons and results of a companion water quality survey, the following chemicals were identified as contaminants of primary concern in the drainage system: oil & grease, total petroleum hydrocarbons, polyaromatic hydrocarbons, iron, cyanide, lead, chromium, and cadmium. |
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