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-� � py.�m February 22,2012 - i]t?d�So es,Inc Page 6 of 15 Of-custody protocol. AEL is accredited by the NELAC (National Environmental Laboratory Accreditation Conference)institute. It is assumed that the samples will be analyzed on a normal(7 to 10 day)turnaround time and the cost of sampling is based on this assumption. Surface Water Sampling— Pursuant to the FDEP's request, KHA will collect three surface water samples from the canal immediately west of the Site. KHA assumes that Indian River County will be responsible for securing permission to access the canal right-of. way for the completion of the surface water sampling. Prior to sampling, KHA will attempt to determine the flow direction of the canal based on visual observations of the canal. KHA will attempt to collect a total of 3 surface water samples from the canal. Relative to the Site, one sample will be collected up-stream, a second will be collected mid-stream and the thud will be collected down-stream. The approximate location of the surface water samples will be surveyed using a hand- held GPS(global positioning system)unit. The surface water samples will be placed on ice and transported to AEL under chain-of-custody protocol. Pursuant to the FDEP's request the surface water samples will be analyzed for total arsenic and total lead. It is assumed that the samples will be analyzed on a normal (7 to 10 day) turnaround time and the cost of sampling is based on this assumption. During the surface water sampling, KHA will attempt to identify a reference point along the canal from which surface water elevation measurements can be made. KHA will attempt to identify a control structure or other permanent structure from which a benchmark elevation can be surveyed. The depth to water elevations will be used to evaluate the localized direction of ground water flow relative to the canal. Slug Testing— The FDEP has requested that the ground water flow velocity be estimated for the Southwest Grove area. Therefore, KHA will select three of the shallow monitoring wells to perform slug testing. Falling head and rising head slug tests will be performed at each monitoring well. A pressure transducer will be used to measure and record the changes in the water level(head)in the well in response to adding.or removing a solid slug of a known volume. Task 3—Survey. The northing and easting coordinates and top of casing elevations for the existing monitoring wells were reportedly surveyed by GEC. KHA assumes that the 47