WORK PLANS - Laserfiche WebLink

Home Browse Search

Kennedy/Jenks Consultants 2.1 Pre-field Activities Prior to beginning the field work at the Beckman Building, Kennedy/Jenks will complete the following tasks: • Contract with a qualified soil gas survey company for one day of soil gas sampling and analysis. • Inspect the inside of the Beckman Building with City of Lodi personnel to select potential sampling soil gas sampling locations within the building. • Mark all anticipated soil gas sampling locations. • Obtain soil boring permits for the soil gas survey from San Joaquin County Public Health Services Environmental Health Division (SJCEHD). • Prepare a project specific Health and Safety Plan in accordance with the provisions of 29 CFR 1910.120. A copy of the Health and Safety Plan is provided as Attachment A. • Contact USA Alert at least 48 hours prior to conducting the field work for utility clearance at each of the soil gas sampling locations. 2.2 Field Work Kennedy/Jenks will collect soil gas samples from up to ten locations on the Beckman Building property. Eight of these locations will be outside of the Beckman Building. The planned sampling locations for the eight sampling locations outside the Beckman Building are shown on the attached Figure 1. The locations for the two sampling locations inside the Beckman Building are not known at this time and will be identified as part of the pre- field activities. At each of the eight locations outside the Beckman Building, soil gas samples will be collected at two different depths, approximately 5 feet below ground surface (bgs) and 25 feet bgs. At the two sampling locations within the Beckman Building, a single soil gas sample will be collected from each location at a depth of approximately five feet bgs. The soil gas samples will be collected by advancing a hydraulically driven 1-inch diameter sampling rod at each location to the desired depth. When the sampling depth is reached, the rods are withdraw approximately 6-inches to create a void at the tip of the rod. A small vacuum pump is attached to the top of the sampling rods and a known volume of soil gas is extracted into a vial. Once filled with soil gas, the vial is recorded onto a chain of custody record and delivered to an on site mobile laboratory for immediate analysis. For this project, the soil gas samples will be analyzed for halogenated volatile organic compounds (HVOCs) by EPA Method 8010. The analytical results from each sampling location will be known within an hour or two of sample collection. One duplicate soil gas sample will be analyzed for every ten samples collected to determine the accuracy of the laboratory analysis. 3/8/96 8:36 AM 2 952704.01 g:\jobs\952704.01\1odi.doc