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r +� <br /> 1 <br /> Evaluation of the Effects of Physicochemical Parameters -w <br /> In cases where baseline routine microbiological and physicochemical analyses produce less <br /> than desirable results for effecting site cleanup, and/or indicate environmental incompatibility, <br /> the issue of physicochemical limiting factors (listed below) may be addressed. Analyses de- <br /> signed to evaluate the effects of individual environmental parameters on an indigenous <br /> microbial population are performed in an effort to determine which factor, if any, may be <br /> t limiting to growth and biodegradation capabilities. The information is used to aid in deterr iin- <br /> ing the efficacy of a desired method. For a complete list, description, and significance of these <br /> evaluation—please refer to our Initial Site Characterization Parameters and Biotechnical <br /> Analyses in Determination of Compatibility and Feasibility for AM In Situ or Ex Situ <br /> Bioremedial Approach document, and our Price List. <br /> Physicochemical Effects (limiting factors) Evaluations <br /> H Nutrient Concentrations 0 pH Variations <br /> 0 Temperature Variations 0 Oxygen Levels <br /> 0 Contaminant Concentrations 0 Salinity <br /> v- Evaluation of Commercial Bioremediation Products ow <br /> Many commercial products have been developed in the bioremediation industry which claim <br /> V to increase the rate and efficiency of the biodegradation process. These bioenhancing prepa- <br /> rations are comprised of a diverse group of products which include, but are not limited to, <br /> ' time-release nutrient supplements, surfactants, soil conditioners, oxygen supplementation <br /> products, microbial enzymes, and lyophilized microbial preparations. Before a decision to <br /> utilize a particular product for a bioremediation project is made, the practitioner should <br /> determine whether or not the product is suitable for that specific site. <br /> BioLogic can provide assistance in validating the technical merit of a product by reviewing <br /> the manufacturer's claims of efficacy, cost factors and application techniques. Should this <br /> review indicate product/site compatibility, a bench-scale evaluation can be performed on site- <br /> specific material to establish product effectiveness. Validating the use of commercial products <br /> prior to field implementation can ultimately save valuable time and resources. <br /> 5 <br />