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Additional info for [Journal] Environmental Science and Technology. Volume 45. Issue 24

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Our study illustrates that data averaging spatially and temporally is an important consideration in the development and implementation of new water quality criteria for both fresh and marine waters. Others have suggested the use of a more flexible system of standards with more gradations to designate water quality,28 as opposed to the binary system inherent in the AWQC. Even with the adoption of new standards, however, implementation will likely take some time, and beach managers may re-evaluate the variable application of the current AWQC to allow greater access to beaches presumably without additional public health risk.

The highest standard deviation and ssmaxCALC was associated with the Lake County beaches (400 CFU/100 mL); these beaches are subject to frequently elevated E. coli concentrations and high fluctuations overall, although no source of contamination has been adequately identified. 703). Effect of Alternate ssmax on Number of Beach Advisories. Use of an ssmax based on local water quality would have resulted in an increase in beach access (open beaches) because in all instances ssmaxCALC was higher than the default 235 CFU/ 100 mL in the AWQC.

S. Army Corps of Engineers, Engineering Research and Development Center (Environmental Laboratory): Vicksburg, MS, 2008. (22) Tiner, R. NWI Maps: Basic Information on the Nation’s Wetlands. BioScience 1997, 47 (5), 269. ; Doyle, M. W. Setting Geographic Service Areas for Compensatory Mitigation Banking. Natl. Wetlands Newsl. In press. ; Riggsbee, A. S. wetland and stream compensatory mitigation markets. Environ. Sci. Policy 2011, 14, 301–314. (25) Granger, C. W. J. Investigating causal relations by econometric models and cross-spectral methods.

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[Journal] Environmental Science and Technology. Volume 45. Issue 24

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