WORK PLANS - Laserfiche WebLink

Home Browse Search

1.0 INTRODUCTION AND SCOPE OF WORK '—' This report presents the results of a Phase I scope of work for the Phase I PSA included the Preliminary Site Assessment(PSA) and a Limited following: Phase H Investigation conducted by Harding Lawson Associates (HLA) for Teichert Aggregates • Reviewing available documents and aerial (Teichert) on Assessor Parcel Number(APN) 253- photographs related to historical development 210-15 (Traina property) located in San Joaquin of the site and adjacent properties. County, California (Plates 1 and 2). Teichert requested a PSA for the above-referenced site to . Conducting an onsite visit and offsite facilitate a potential property transaction and the reconnaissance of a study area within Phase H study investigates environmental approximately 1/4 mile of the site boundary v concerns identified during the Phase I PSA. to assess visible evidence of the generation, use, storage, and/or disposal of hazardous The purpose of this PSA was to provide materials. The evaluation of the potential for information on the parcel and surrounding area soil and/or groundwater contamination at the with respect to the potential presence of site and its immediate surroundings was hazardous/toxic materials and wastes on, based on above-ground visual observations. beneath, or in the vicinity of the site. This v evaluation was based on information gathered . Reviewing and evaluating Environmental from federal, state, and local agencies; interviews Data Resources, Inc. (EDR) Radius Map report with people familiar with the property; a site visit which maps and lists sites in government boo conducted by HLA personnel; and a databases with potential or existing liabilities reconnaissance of the area within approximately within a minimum 1/4 mile radius of the 1/4 mile of the parcel boundary. The purpose of target property. the limited Phase 11 study was to collect data -• relevant to four environmental concerns . Reviewing and evaluating EIR's Fire identified during the PSA. These four Insurance Map and City Directory Abstract environmental concerns consisted of the which indicates uses of properties and/or lists following: businesses with a minimum 1/4 mile radius of the target property that may have had the • Two former underground storage tanks potential to contaminate the site based on (USTs), past use. • A former above ground fuel storage tank (AST), HLA's scope of work for the limited Phase II • The two existing ASTs, and Investigation included the following: • Three locations used for mixing agricultural chemicals. . Prepare a Work Plan for submittal to the San Joaquin County Environmental Health The Phase II study included two mobilizations; Department(SJCEHD), and secure boring the first to collect soil analytical data to evaluate permits. the four recognized environmental concerns, and . Drill and sample one 40-foot soil boring the second, to assess the vertical and lateral adjacent to the existing above ground storage extent of potentially impacted soil at the former tank (AST) location. USTs location. . Collect a composite soil sample of surfical soils from three former agricultural mixing The PSA and the Phase II assessment were areas. authorized by Ms. Kim Tarbell of Teichert and . Drill and sample six soil borings at the former performed in accordance with HLA's Services underground storage tank (UST) location. Agreement and proposal both dated September 3, 1996 and HLA's subsequent proposals dated September 23, and October 29, 1996. HLA's G:\WP\GDH\GH3e371Z.151 Harding Lawson Associates 1 iw