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1 <br /> <br />t <br />1 <br />t <br />1 <br /> <br /> <br />1 <br /> <br />1 <br />1 <br /> <br /> <br /> <br /> <br />1 <br />1 <br /> <br />Spee~proper[y Mine Permit <br />Envi nmental Sampling <br />1.0 Introduction <br />The Speer Property, located at the intersectipn of 120"' Ave and Old Brighton Road, <br />near the town of Henderson, is the former sift of a commercial aerial pesticide and <br />herbicide applicator (crop duster). The current owner of the property, Asphalt <br />Specialties Company, is :>eeking 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 />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 />22314-0001: 02/21/00 <br />