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Ms. Polly Kratman GeoSyntec Consultants Indian River County 10 May 2006 Page 8 Piezometer Installation: Piezometers will be installed in four of the shallow borings and the Rotosonic® deep boring to define the groundwater conditions at the site. The shallow piezometers will be installed as clusters to monitor the groundwater conditions within the upper and intermediate zones of the shallow aquifer system. The piezometer clusters are proposed at locations around the perimeter of the expansion areas to allow for use as groundwater monitoring points after the landfill expansion areas are in operation. The Rotosonic® boring will be converted to a deep piezometer to assist in evaluating the head difference between the upper and lower permeable zones . The piezometer clusters (four total) will be sampled for laboratory analysis. Groundwater samples from the piezometers will be analyzed for the parameters specified in Rule 62-701 . 510(6)(b), FAC (Initial Background Ground Water Quality) plus sulfate, aluminum, and phenols in accordance with Rule 62-701 .730(4)(a)5, FAC . Geotechnical Laboratory Analyses: Laboratory analyses of the soil samples collected during the field investigation program will be conducted at a qualified geotechnical testing laboratory. Standard geotechnical laboratory procedures will be used to evaluate the index, strength, compressibility, and hydraulic properties of the soils for the design of the landfill expansion . Hydrogeological Testing: Upon completion of installation and development of the piezometers, groundwater level measurements will be collected from the newly installed piezometers, and existing piezometers/monitoring wells . This information will be utilized to evaluate aquifer types at the site and groundwater flow direction. Field Surveying: Surveying services will be required to identify the locations and elevations (horizontal and vertical control) of the test borings and piezometers. The survey information will be referenced using the Florida State Plane Coordinate System (NAD83) and the National Geodetic Vertical Datum of 1929 (NGVD29). Public and Private Wells Survey: GeoSyntec will conduct a survey of all public and private water supply wells within one-mile radius of the proposed expansion area [Rule 62- 701 .410( 1 )(b), FAC] by searching the available databases and contacting the appropriate agencies. Also, a survey of all potable wells within 500 feet of the waste disposal area, and locations of all wells serving community water supplies within 1 ,000 feet of the proposed expansion footprint [Rule 62-701 .410(1 )(d), FAC] will be conducted . Well logs and information on the average yield of these wells (if available) will be collected and xI.0e09evw007o.aoc