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Work Plan—Site Sampling Page 15
<br /> West Weber Site-Stockton
<br /> GPE Project 536.2
<br /> of at least 15 soil and 5 groundwater samples will be collected for analysis. The following
<br /> table provides the expected sample identifiers:
<br /> Sample ID Sample Location Sample Analytes
<br /> W01541-B1-I Waste Oil Site,Boring B1, 1 foot Soil S-VOCs,TEPH,CAM-l7
<br /> W01541-BI-5 Waste Oil Site,Boring B1,5 feet Soil S-VOCs,TEPH,CAM-17
<br /> W01541-BI-9 Waste Oil Site Boring B1,9 feet Soil S-VOCs,TEPH,CAM-17
<br /> W01541-BI-W Waste Oil Site,Boring B1,GW Sample S-VOCs,TEPH,CAM-17
<br /> W01541-B2-1 Waste Oil Site,Boring B2, 1 foot Soil S-VOCs,TEPH,CAM-17
<br /> W01541-B2-5 Waste Oil Site,Boring B2,5 feet Soil S-VOCs,TEPH,CAM-17
<br /> W01541-B2-9 Waste Oil Site Boring B2,9 feet Soil S-VOCs,TEPH,CAM-17
<br /> W01541-B2-W Waste Oil Site,Boring B2,GW Sample S-VOCs,TEPH,CAM-]7
<br /> W01541-B3-1 Waste Oil Site,Boring B3, 1 foot Soil S-VOCs,TEPH,CAM-17
<br /> W01541-B3-5 Waste Oil Site,Boring B3,5 feet Soil S-VOCs,TEPH,CAM-17
<br /> W01541-B3-9 Waste Oil Site Boring B3,9 feet Soil S-VOCs,TEPH,CAM-]7
<br /> W01541-B3-W Waste Oil Site,Boring B3,GW Sample S-VOCs,TEPH,CAM-]7
<br /> W01541-B4-1 Waste Oil Site,Boring B4, 1 foot Soil S-VOCs,TEPH,CAM-17
<br /> W01541-B4-5 Waste Oil Site,Boring B4,5 feet Soil S-VOCs,TEPH,CAM-17
<br /> W01541-B4-9 Waste Oil Site Boring B4,9 feet Soil S-VOCs,TEPH,CAM-17
<br /> W01541-B4-W Waste Oil Site,Boring B4,GW Sample S-VOCs,TEPH,CAM-17
<br /> W01541-B5-1 Waste Oil Site,Boring B5, 1 foot Soil S-VOCs,TEPH,CAM-17
<br /> W01541-B5-5 Waste Oil Site,Boring B5,5 feet Soil S-VOCs,TEPH,CAM-17
<br /> W01541-B5-9 Waste Oil Site Boring B5,9 feet Soil S-VOCs,TEPH,CAM-17
<br /> W01541-B5-W Waste Oil Site,Boring B5,GW Sample S-VOCs,TEPH,CAM-17
<br /> S-VOC=Semi-Volatile Organic Compounds
<br /> TEPH=Total Extractable Diesel and Oil Range Hydrocarbons
<br /> CAM-17=17 Priority Contaminant Heavy Metals
<br /> LUST Sites, 12 borings
<br /> A group of authoritatively selected borings will be installed at four points within the footprint
<br /> of the three LUST excavations as described in the section regarding soil gas sampling above.
<br /> General Boring and Sampling Methods
<br /> The GeoProbe is a truck mounted drilling system that uses direct push methodology to collect
<br /> soil and groundwater samples. Four foot long by 3/4 -inch diameter stainless steel rods are
<br /> pushed or hammered into the ground using a hydraulic ram or the hydraulically actuated
<br /> hammer mounted on the ram. Soil samples are collected using a 4-foot long by 2-inch inside
<br /> diameter drive sampler lined with a plastic sample sleeve.
<br /> The Geo-Probe allows continuous coring of the soil in the four-foot long liners inside the 2-
<br /> inch sampling tool. Soil cores will be logged for lithologic and stratigraphic analysis. Upon
<br /> retrieval, the soil at the end of each four-foot long plastic sample sleeve will be described and
<br /> logged. The sample sleeve will be sealed with teflon sheets or aluminum foil, capped with
<br /> plastic end caps, secured with tape, labeled, and retained for possible further analysis. During
<br /> drilling, a log will be made of each boring. Information to be noted includes such data as
<br /> sample depths, horizons of detectable contamination (detected by field methods, including a
<br /> PID organic vapor meter), soil classification utilizing the Unified Soil Classification System
<br /> and sediment description (color, texture, composition, hardness, moisture content, and post-
<br /> depositional changes that have occurred in the sediments). Selected sections of the core may
<br /> be submitted for laboratory analysis as needed.
<br /> 2937 Veneman Avenue, Suite B240 Geo-Phase Environmental Inc. Phone: (209)569-0293
<br /> Modesto, Ca 95356 Fax: (209) 569-0295
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