WORK PLANS - Laserfiche WebLink

Home Browse Search

NW01 31 March 2004 AGE-NC Project No. 06-1156 Page 3 of 8 • Permitting and pre-field work activities; • Soil sample collection and analysis; • In-situ ground water sample collection and analysis; • Monitoring well installation and sampling(if appropriate); • Report preparation. The preliminary site assessment tasks are discussed below. 3.1. PRE-FIELD WORK ACTIVITIES A health and safety plan will be prepared in accordance with Occupational Safety and Health Guidance Manual for Hazardous Waste Site Activities (National Institute for Occupational Safety and Health Administration, U.S. Coast Guard and U.S. Environmental Protection Agency, 1985). Prior to mobilization,the area of excavation will be clearly marked and a utility clearance obtained through Underground Service Alert. 3.2. SOIL SAMPLE COLLECTION AND ANALYSIS Initially, AGE proposes to advance four soil probe borings using direct push technology(DPT) in the vicinity of the former UST area to evaluate the vertical extent of the petroleum hydrocarbon impact on soil and ground water. Proposed probe boring locations are illustrated in Figure 2. The proposed probe boring locations maybe modified due to field observations or additional borings may be advanced with approval by the SJCEHD. Each proposed probe boring will be advanced to 50 feet bsg or until the field observations and field screening using an organic vapor monitor(OVM) indicate that detectable petroleum vapors are not present in the soil samples screened from two consecutive five-foot intervals. Soil samples will be collected at 5-foot intervals beginning at 5 feet bsg extending to the total probe boring depths. Field procedures for advancement of probe borings and collection of soil samples are presented in Sections 4.1 and 4.2. Selected soil samples from each probe boring will be submitted for laboratory analysis with concurrence of the SJCEHD. The selected soil samples will be analyzed by a State of California Department of Health Services(DHS)-certified laboratory for the following constituents: Advanced GeoEnvironmental,Inc.