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Corrective Action Plan Page 14 Former Manna Pro Site Project No 207 3 February 16,2001 ' 5.0 SOIL & GROUNDWATER SAMPLING & ANALYSIS PROCEDURES ' 5.1 Soil Sample Collection Soil samples will be collected for geologic and possible analytical evaluation on five-foot t intervals in each boring unless otherwise noted The following is a description of the methods used in collecting soil samples ' In hollow stem auger borings, soil samples will be collected for geological and analytical evaluation at five-foot intervals using a 2 0-inch diameter by 1 5-foot long (i d ) hammer driven California Split Spoon sampling device fitted with three 2 by 6 inch stainless steel ' liners The soil sample collection procedure will be as follows The end of each sample tube removed from the split spoon will be sealed with aluminum foil, capped with plastic end caps, secured with tape, labeled and placed in a cooler at 4° Celsius for transport to ' the laboratory using Chain of Custody protocol Chain of Custody (CofC) forms are documents used to track the handling of samples All dates, times, persons and companies handling the samples will be listed from the time the sample is collected to its ' ultimate analysis All soil sampling equipment will be decontaminated between uses by washing using a steam cleaner Nitrile gloves will be worn during sample collection and changed between the collection of each sample A detailed log will be made of each boring The information to be noted include such data as sample depths, blow counts from hammer driven sampling devices, horizons of ' detectable contamination (detected by field methods), soil classification utilizing the Unified Soil Classification System and sediment description (color, texture, composition, ' hardness, moisture content, and post-depositional changes that have occurred in the sediments) ' 5.2 Groundwater Sample Collection It is not anticipated that groundwater samples will be collected from the newly installed remedial wells, groundwater level will, however, be measured in each well by use of measuring tape with an electronic sensor This tape has an accuracy to the nearest one- one hundredth of a foot If floating product is suspected in a monitoring well, then a bailer will be lowered into the well to determine and measure the thickness of free product at the surface of groundwater The presence of floating product will affect water elevations and sampling protocol The sounding tape will be decontaminated before and between sounding each of the wells As each well is opened, and prior to taking the depth to groundwater measurement, a PID will be used to screen for VOC's in the head space of the well i ' 2937 Veneman Ave,#13240 Geo-Phase Environmental Inc Phone(209)569-0293 Modesto, CA 95356 Fax(209) 569-0295 I