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Checklist: Can In-Situ Groundwater Bioremediation Be Used <br /> At This Site? <br /> This checklist can help you evaluate the completeness of the CAP and <br /> identify areas that require closer scrutiny As you go through the CAP. <br /> ' answer the following questions If the answer to several questions is no, <br /> you should request additional information to determine if un-situ <br /> groundwater bioremediation will accomplish cleanup goals at the site. <br /> 1. Site Characteristics <br /> Yes No <br /> ❑ Qf Is the aquifer hydraulic conductivity greater than 10"4 <br /> cm/sec? <br /> ❑ Have impermeable layers or other conditions that would <br /> disrupt groundwater flow been considered in the design <br /> / of the remediation system? <br /> 1 [ ❑ Has the groundwater mineral content been quantified <br /> and taken into consideration? <br /> ❑ Are dissolved iron concentrations < 10 mg/1? <br /> ❑ Is the groundwater pH between 6 and 8? <br /> ❑ is the groundwater temperature been 10*C and 45'C? <br /> t� ❑ Is the total heterotrophic bacteria count > 1,000 <br /> CFU/gram in dry soil? ( 2 A4osrr :5ePL=S) <br /> ❑ is the carbon nitrogen phosphorus ratio between <br /> 100 10 1 and 100 1 0 5? <br /> IJCn' sip VTTu'taL o12GA�1ttt- G/�rR$a1J jbkt <br /> 2. Constituent Characteristics AIM-1 FAA -L 'W*I-OA4 T qs 7A,-C?p, <br /> oN TPA JkuulzS dS�� <br /> Yes No <br /> ' ❑ Have all constituents of concern been identified? <br /> t 0 Are constituents all sufficiently biodegradable? <br /> ' ❑ Is the concentration of total petroleum hydrocarbon <br /> 50,000 ppm and heavy metalse, 2,500 ppm? <br /> I ❑ Are organic solvent concentrations < 7,000 ppm? <br /> X-36 May 1995 <br />