WORK PLANS - Laserfiche WebLink

Home Browse Search

Site Investigation Work Plan NATIONAL FREIGHT 2850 Loomis Road, Stockton, California I.O. INTRODUCTION Advanced GeoEnvironmental, Inc. (AGE) has prepared tl is site investigation work plan for the advancement of soil probe borings at 2850 Loomis Road a site), Stockton,California.. The work plan is prepared at the request of Mr. Dan Folcher of Vinela id Construction Co. The location of the site is illustrated in Figure 1. A plan of the site is illustratei i on Figure 2. This work plan is prepared as required by the San Jo a uin County Public Health Services - Environmental Health Division(PHS-EHD)by letter dated 2 1 June 1999 and is in accordance with PHS-EHD and Central Valley Regional Water Quality Control Board(RWQCB)guidelines for the investigation of underground storage tanks(UST)'sites. The purpose of the proposed assessment is to evaluate the lateral and vertical extent of petroleum hydrocarbon impact to soil at the site. This work plan proN ides a description of the scope of work and procedures to be used for soil probe boring advancerneni and soil sample collection and analysis. Z.O. BACKGROUND The site is located in a topographically flat area of Stockto a,California(Figure 1),approximately 1,400 feet west of the intersection of Loomis Road and Cali omia Highway 99 Frontage Road. The site is further described as being located in the northeast quarter of Section 47,Township I North, Range 7 East, Mount Diablo Base and Meridian (Stockton East Quadrangle, 7.5-Minute USGS Topographic Series, 1968,photo revised 1987). 2.1. SITE DESCRIPTION The site is presently utilized as a truck depot for freight trattsportation.The site consists of a large building structure utilized for office space and a storage'yard.Two 12,000-gallon diesel USTs and one 1,000-gallon waste oil UST were formerly located on 1he property. 2.2. UNDERGROUND STORAGE TANK REMOVA Two 12,000-gallon diesel USTs(Tank No. I and Tank No. ),two fuel dispensers and all associated product piping were removed from the site on 29 September 1998. Laboratory analysis of soil samples collected beneath the diesel USTs/dispenser island area and product piping detected total, petroleum hydrocarbons quantified as diesel (TPH-d) at concentrations as high as 5,100 mg/kg AdOmeed Gt9tavirommal,Inc.