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1 <br />' Speer Property Mine Permit <br /> Environmental Sampling <br />' <br /> 1.0 Introduction <br />' The Speer Property, located at the intersection of 120`" Ave and Old Brighton Road, <br /> near the town of Henderson, is the former site of a commercial aerial pesticide and <br /> herbicide applicator (crop duster). The current owner of the property, Asphalt <br />' Specialties Company, is seeking to mine the sand and gravel reserves. Because of the <br /> possible presence of residual pesticides and herbicides in groundwater and soils, it was <br /> decided to obtain environmental samples and present the results with the sand and <br />' gravel mine permit application. <br /> Banks and Gesso, LLC, subcontracted Grant Environmental, Inc. (Grant), an <br /> environmental and engineering consulting firm, to obtain soil and groundwater samples <br />' at selected locations. These locations are shown in Figure 1. The soil and groundwater <br /> samples obtained were analyzed for pesticides and herbicides using the following EPA <br />' methods: <br /> • EPA Method 8081 A, Organochlorine Pesticides; <br /> • EPA Method 8082, Polychlorinated Biphenyls (PCBs); <br />• EPA Method 8041, Organophosphorous Compounds by Gas Chromatography; <br /> • EPA Method 8151 A, Chlorinated Herbicides by Gas Chromatography. <br /> The data summary tables in Section 3, Analytical Results, list the specific compounds <br /> analyzed and their results using these methods. <br />' <br /> 2.0 Description of Activities <br />' Soil and groundwater samples were collected at the Speer property between January 13 <br /> and January 20, 2000. The field activities included sampling surficial and shallow soils <br /> at five locations; drilling and sampling five soil borings; installing and developing <br /> monitoring wells in the borings; and sampling groundwater from each of the wells. <br />' Figure 1 shows the sampling locations. The following sections describe sample <br /> collection activities and procedures. <br /> 2.1 Surficial Soil Sampling <br />' surficial and near-surface soil samples were collected from five locations. Because crop- <br />dusting operations occurred at the site for over 30 years, it was assumed that <br /> the ground surface and the immediately underlying inch or two of soil was likely to be <br /> contaminated as pesticides and herbicides are generally highly sorbed and are relatively <br />' immobile. The overall purpose for these samples was to determine whether residual <br /> contaminants had penetrated below the top several inches of soil at different locations <br /> around the site. The rationale for each of the sample locations is described below. <br /> <br /> <br />' 22314-0001:02/21/00 <br />