Laserfiche WebLink
BACKFILL and COMPACTION <br /> Following the successful removal of the Product Lines and without indication of soil <br /> contamination , as confirmed by Sample Analyses at a state certified laboratory, the excavation <br /> will be partially backfilled using the clean soil stockpiled on site and any imported soil that may be <br /> necessary to bring the excavation to sub-grade. <br /> SOIL DISPOSITION <br /> As stated above, clean overburden soil will be compacted back into the excavation. Soils that are <br /> confirmed as contaminated and not suitable for backfill will be remediated on site or characterized <br /> and profiled to an acceptable landfill or recycling facility, per San Joaquin County guidelines. <br /> PROJECT REPORTAGE <br /> W. A. Craig, Inc. will prepare and submit a site activity report within two (2) weeks of receiving <br /> the analytical data, if required by regulatory agency. Our interpretations and results of the <br /> analyses will be provided. We will also recommend any further work, if necessary, in the report. <br /> Documentation will include copies of analytical data, copies of chains of custody and lab reports <br /> and interpretive figures as needed. <br /> SOIL/WATER SAMPLING METHODOLOGY <br /> Discrete soil samples will be removed from the excavation by means of a backhoe bucket or hand <br /> auger. After rapidly removing three to four inches of soil near the teeth of the backhoe bucket, <br /> the samples will be contained by driving clean brass tubes (2"x6") into the exposed layer of soil. <br /> Soil will be packed into the tubes to eliminate the possibility of headspace within the tube. A total <br /> number of samples will be determined by San Joaquin County Health from under the under the <br /> location of former product lines. <br /> If the necessity for water samples are needed , they will be collected in a new disposable PVC <br /> bailer and will be containerized into clean amber liter bottles sealed with screw caps and/or clean <br /> 40 mil volatile organic vials covered with a teflon septa and screw caps. <br /> Samples will be transported under chain of custody in a cold ice chest containing frozen ice, to <br /> McCampbell Analytical Laboratories in Pacheco, Ca. (#1644) for the required analyses. Soil <br /> analysis requires approximately five days. <br /> All sampling will be performed under the direction of the representative of San Joaquin County <br /> Dept. of Environmental Health. <br /> 3 <br />