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0 0 <br /> GROUND WATER SAMPLING AND ANALYSISP - FORWARD, INC. <br /> FORWARD LANDFILL - STOCKTON, CALIFORNIA <br /> This report describes the sampling and analysis procedures which will be followed when <br /> collecting ground water samples from RCRA wells 1, 2A, 2, 10, 12 and three additional <br /> wells, MW-13, 14 and 15, will be installed, MW-1, 2A, 3, 10 and 12 at the Forward landfill. <br /> Included in this report will be information on sample collection, sample preservation and <br /> handling, chain of custody control, analytical procedures and field and laboratory quality <br /> assurance and quality control. <br /> SAMPLE COLLECTION <br /> MEASUREMENT OF STATIC WATER LEVEL ELEVATIONS: <br /> Upon arriving at the Forward site, all ground water monitoring wells will be opened <br /> and measured for depth of standing water and the depth to the bottom of the well. <br /> A 100 foot long Solinst 101 electric water level measuring device will be used to <br /> rneagura the depth of water i!1� *the wells to +- .01 feet and will be referenced to the <br /> permanent NGVD survey point previously placed on the side of the casing. <br /> Because there are no wells at the site deeper than 110 feet the total depth of the <br /> wells will be measured with the measuring- device and an additional 10 foot long <br /> attachment and weight. <br /> If the water table, at any time, drops to a level where water level measurements <br /> cannot be taken or to a point where samples cannot be retrieved, a replacement <br /> well will be installed in close proximity to the dry well and the dry well will be <br /> abandoned. <br /> Between measuring each well the measuring device will be cleaned and rinsed <br /> with deionized water to prevent cross contamination between wells. <br /> DETECTION OF IMMISCIBLE LAYERS: <br /> If is determined that immiscible layers is a concern at the Forward site, each type, <br /> floaters or sinkers, can be isolated and sampled in the wells on the property. Using <br /> a stainless steel double checking bailer, ground water layers can be isolated and <br /> collected for analysis prior to purging the wells for subsequent sampling. Because <br /> the very low levels of contamination in the wells the detection of immiscible layers <br /> may not be required. <br />