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en virosn <br /> Task 2_ Health and Safety Plan <br /> A site-specific Health and Safety Plan will be prepared for field work <br /> Task 3 Utility Clearance <br /> Proposed drilling locations will be marked and their locations cleared through Underground <br /> Services Alert (USA) prior to drilling <br /> Task 4 Site Invests ation - Ground Water Monitoring Wells <br /> A total of six exploratory borings will be drilled in locations shown on Plate 2 and <br /> completed as ground water monitoring wells Each boring will be drilled using hollow <br /> stem auger drilling techniques Soil samples will be collected from each boring at five foot <br /> intervals and at significant lithologic changes for chemical analysis and lithologic <br /> description using a modified California split-spoon sampler <br /> An Enviros geologist will supervise the drilling and describe encountered soils using the <br /> Unified Soil Classification System (USCS) Soil sample intervals will be screened in the <br /> field for organic vapor by measuring head-space vapors using an organic vapor meter <br /> (OVM) Soil samples selected for chemical analysis will be properly sealed, labeled, and <br /> entered onto a chain-of-custody record Soil samples will be preserved in a cooler with ice <br /> for transport to a State of California certified laboratory <br /> An exploratory boring log will be prepared for each boring Head-space vapor <br /> measurements will be recorded on the log <br /> Wells will be completed using 2-inch diameter Schedule 40 PVC casing The sandpack <br /> will be placed 1-foot above the top of the well screen followed by a 1-foot thick bentonite <br /> seal Each well will be secured with a locking cap under a traffic-rated well box Wellhead <br /> elevations will be surveyed to Mean Sea Level by a State of California licensed surveyor <br /> A well completion detail will be prepared for each ground water monitoring well <br /> Task 5 Site Investigation - Soil Borin-p5 <br /> Two exploratory borings will be placed in locations shown on Plate 2 for collection of soil <br /> and ground water samples at depths below first encountered ground water The borings <br /> will be drilled using CPT drilling techniques to allow collection of soil and ground water <br /> samples at discreet depth intervals Samples will be collected at 10-foot intervals at depths <br /> of approximately 40, 50, and 60 fbg <br /> An Enviros geologist will supervise the drilling and describe encountered soils using the <br /> Unified Soil Classification System (USCS) Soil and ground water samples will be <br /> properly sealed, labeled, and entered onto a chain-of-custody record Samples will be <br /> preserved in a cooler with ice for transport to a State of California certified laboratory <br /> Task 6 Chemical Analyst,, <br /> Soil samples will be analyzed for Total Purgeable Petroleum Hydrocarbons (TPPH) and <br /> Total Extractable Petroleum Hydrocarbons (TEPH) according to EPA Method 8015 <br /> 96406 3 <br />