Laserfiche WebLink
Project No.E8062.WTP Phase II Environmental Site Assessment/Lathrop,CA October 21, 1999 <br /> r <br /> SURFICIAL METAL AND ORGANOCHLORIDE PESTICIDE <br /> PHASE H ENVIRONMENTAL SITE ASSESSMENT <br /> 1. INTRODUCTION <br /> 1.1 Objectives <br /> Since the subject site is has been used for agricultural purposes (namely row crops), metal <br /> pesticides arsenic (As), lead (Pb), mercury (Hg), and organochloride pesticides may have <br /> impacted the surficial soil at the subject site. Based on this premise, this Phase R environmental <br /> site assessment was prepared to evaluate the presence of metal and organochloride pesticides in <br /> the surficial soil at the subject site in Lathrop, California. This work has been performed in <br /> response to our recent Phase I Environmental Site Assessment (Reference 1). <br /> 1.2 Scope <br /> '- As authorized by Mr. John Hughes, on October 21, 1999, our services were limited to the <br /> following: <br /> a) Collection of 10 shallow soil samples from the subject site to be analyzed at a State- <br /> certified hazardous-waste testing laboratory for organochloride pesticides and metals As, <br /> Pb, and Hg. <br /> b) Preparation of this report. <br /> 2. SITE LOCATION AND DESCRIPTION <br /> The subject property is located in the western portion of Lathrop, California within the San <br /> Joaquin Valley (see Site Vicinity Map, Figure 1). The subject site consists of 100 acres at the <br /> western end of Frewert Road, between Frewert and Manilla Roads. The site is currently used for <br /> agricultural purposes. The local topography at the site is generally flat (10 feet above mean sea <br /> level [msl]). A levee is located immediately east of the site (along San Joaquin River), and <br /> drainage appears to be toward the west. <br /> 3. SURFICIAL METAL AND ORGANOCHLORIDE PESTICIDE <br /> PHASE H ENVIRONMENTAL SITE ASSESSMENT <br /> _ 3.1 Field Work <br /> On October 21, 1999, a TERRASEARCH, ina field geologist visited the subject site and <br /> collected 10 shallow soil samples from at approximately 0.5 feet below ground surface using <br /> cleaned brass tubes that were capped, labeled, and placed into a pre-chilled ice-chest for <br /> temporary storage. The sample locations are shown on Figure 2, Sample Location Map. <br /> TERRASEARC$ inc. Page 4 <br />