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U`1♦ L:J/ LUut 1! 17 1j47J000U7U PAGE 06/13 <br /> April 25,2001 Page 5 of 5 <br /> The monitoring protocol should call for standard low flow groundwater sampling techniques and <br /> include the measurement of the following field/chemical parameters: <br /> r <br /> • all relevant contaminants <br /> • field parameters: dissolved oxygen, ORP, pH, temperature, and ferrous iron (optional Meld <br /> measurement) 1 <br /> • natural attenuation/inorganic parameters: nil te, nitrite, ammonia, dissolved iron and alkalinity <br /> • HRC-based electron donor: total organic carbon and metabolic acids (lactic, pyruvic, acetic, <br /> propionic, and butyric) <br /> • end-product dissolved gases: nitrogen? <br /> A specially qualified laboratory should do the analytical testing for the metabolic acids, otherwise <br /> most laboratories can lm <br /> provide testing for the remaining parameters. A typical cost for the above <br /> testing program is approximately $300 per sample. <br /> Regenesis appreciates the opportunity to provide this information for your project. Please feel free <br /> to contact us with any questions or comments. <br /> Sincerely, <br /> Craig A. Sandefur <br /> Director, Remediation Services <br /> !:\HRC\Proposals\GeoSyntec\Vemzlis Nitrate SimWemalis 1ilot Test -24-0i.doc <br />