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the well with a metal plate The number on the inside is written on the well cap with waterproof ink The <br /> casing has a notch or indication on its north side indicating a unique measuring/surveying point <br /> Well development is conducted by simple pumping if bridging of the screen does not occur If bridging <br /> occurs,well surging is conducted for adequate well production Well surging is created by the use of surge <br /> blocks, bailers, or pumps,whichever method is most appropriate for the well use Only formation water is <br /> used for surging the well Well development continues until non-turbid groundwater is produced or <br /> turbidity stabilizes All purged groundwater is held on site in covered 55-gallon DOT-approved drums or <br /> other appropriate containers until water sample analytical results are received The elevation of the north <br /> side of the top of well casing(or other appropriate reference point from which the depth to groundwater <br /> can be measured) is surveyed to an accuracy off 0 01 foot All measurements are reproduced to assure <br /> validity Surveying is conducted by a California state-licensed surveyor or California state Registered Civil <br /> Engineer with a registration prior to 1988 if required by state or local regulations In the State of California, <br /> wells are surveyed in accordance with AB2886 <br /> 4. Data Reduction <br /> The data compiled from the soil borings is summarized and analyzed A narrative summary of the soil <br /> characteristics is also presented The soil boring logs are checked for the following information <br /> a correlation of stratigraphic units among borings, <br /> C identification of zones of potentially high hydraulic conductivity, <br /> Y identification of the confining layer, <br /> • indication of unusual/unpredicted geologic features (fault zones, fracture traces, facies changes, <br /> solution channels, buried stream deposits, cross-cutting structures, pinchout zones, etc ), <br /> O continuity of petrographic features such as sorting,grain-size distribution, cementation,etc <br /> Soil boring/well locations are plotted on properly scaled map If appropriate, soil stratigraphy of the site is <br /> presented in a scaled cross section Specific features that may impact contaminant migration, (fault zones <br /> or impermeable layers)are discussed in narrative form and supplemented with graphical presentations as <br /> deemed appropriate <br /> M2in\D'Envnroeunental\PmwTexxolReponslSAR1203 wpd <br />