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I <br /> 1 <br /> Mr Bill Little <br /> Advanced GeoEnvironmental (North) <br />' ARCO MiniMart <br /> November 11 , 1997 <br /> Page 2 <br /> COMMENT <br />' Microbiological counts are extremely low for the samples analyzed Such results may be due <br /> to the presence of low levels of hydrocarbons remaining in the native waters (per verbal <br />' communication), as well as nondetectable levels of ortho-phosphate Other factors (such as <br /> possible biotoxic materials present in the water) may also be contributing to the low levels of <br /> viable microorganisms encountered While there appears to be some selective activity <br />' associated with sample MW-4 (due to presence of low numbers of selective biodegraders) it <br /> is unlikely that this concentration will exert a significant biodegradative activity in the near <br /> term, especially if waters are not supplemented with nutrients containing orthophospohate <br /> In its present state, it is unlikely that waters associated with VW-1 will undergoe detectable <br /> levels of attenuation due to biological activity <br /> Should you have any questions concerning this information, please do not hesitate to contact <br /> me <br /> I <br /> I <br />' AKK ch <br /> -\4A <br />