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Salinity: At sites where marine influences are a factor, the evaluation of the effects of salinity is performed to determine if a saline environment is a limiting factor to the growth and biodegrada- tion capabilities of the indigenous microbial population. For this evaluation, heterotrophic and selective microbial enumerations are performed on culture media supplemented with varying salt concentrations and following an incubation period, the cultures are observed for differences in the abundance of growth. The results are used to determine if and to what extent (i.e., high salt con- centration)the presence of a saline environment will have on the site-specific microbial population. SUMMARY BioLogic's goal'in preparing this procedural outline has been to illustrate to our clients the importance of determining the biotechnical criteria that should be evaluated before any decisions are made in selecting a bioremedial approach. The adoption of a particular cleanup method should be supported by technically sound data derived from a thorough review of site-specific data and the performance of simple, basic mi- crobiological, physicochemical, and geotechnical evaluations that will aid in the determination of the efficacy of that method. The staff at BioLogic possesses many years of practical experience in providing our clients with the infor- mation required to make sound bioremedial decisions by reviewing site data, performing appropriate bio- technical analyses, and evaluating all the data and parameters necessary to ensure that bioreme" performance criteria are met and that site cleanup is achieved in a timely and cost-effective manner. To that end, BioLogic would be pleased to review your bioremediation site data and initial project requirements (e.g., regulatory issues, time requirements, budgets, scheduled monitoring events) and assist in the develop- ment of-a comprehensive workplan for client and regulatory approval. All information provided to BioLogic by our clients will, of course, be held in the strictest confidence. Biologic thanks you for you interest, and looks forward to working with you in the near future. 7