Laserfiche WebLink
03 November 2003 <br /> AGE-NC Project No. 03-1055 <br /> Page 4of6 <br /> (OVM). Excavated soil that appears visibly stained or has a petroleum hydrocarbon odor will be <br /> considered impacted. <br /> Due to the presence of ground water in the current excavation, site preparations will include <br /> submersible pumps,a generator, and appropriate holding tanks.Removed ground water will be held <br /> on site in a temporary holding tank until transferred to an appropriate waste disposal facility. <br /> The proposed scope of work includes the removal of petroleum hydrocarbon-impacted soil and <br /> ground water from the former UST location. The proposed soil removal and sampling will include <br /> the following tasks: <br /> • Soil excavation; <br /> • Soil sample collection and analysis; <br /> • De-watering of excavation; <br /> • Soil disposal; and <br /> • Report preparation. <br /> 3.1. SOIL SAMPLING AND ANALYSIS <br /> Soil samples will be collected from the excavation and submitted for laboratory analysis.Following <br /> State of California Regional Water Quality Board, Tri-Regional Board recommendations, soil <br /> samples will be collected from each side-wall of the excavation at a minimum interval of every 20 <br /> linear feet, and from the base of the excavation at a minimum of one sample for every 400 square <br /> feet of excavation area.In addition,soil samples will also be collected from the stockpiled soil from <br /> the excavation.For soil disposal characterization,a 4:1 composite soil sample will be collected from <br /> every 100 yards of soil excavated. Field procedures for collection of soil samples are presented in <br /> Section 4.2. <br /> Each soil sample will be analyzed by a State of California Department of Health Services (DHS)- <br /> certified laboratory for the following constituents: <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA <br /> Method 8015 Modified; <br /> • Benzene, toluene, ethyl benzene and total xylene (BTEX) and methyl tert-butyl ether <br /> (MTBE) in accordance with EPA methods 8260M and <br /> • Volatile organic compounds (VOC)with EPA methods 8260M <br /> Advanced GeoEnvironmentm,Inc. <br />