Laserfiche WebLink
1yIIl%Envirvnrnental Consultants, Inc. <br /> Sampling Pmtncols <br /> Page: 3 <br /> The samples will be rcfrigera.ted immediately for delivery to the laboratorrl and will <br /> under no circumstances be opened by anyone other than laboratory personnel. <br /> Chain of Custody rwords will be maintained at all times. <br /> Soil Sampling <br /> All soil sampling equipment will be thoroughly steam-cleaned before and between <br /> sampling to prevent cross contamination. Relatively undisturbed soil samples will <br /> be taken at intervals of not more than five feet in order to evaluate the subsurface <br /> materials, however this sampling interval may be waived in saturated sands in <br /> which sample recovery is not possible. During the us-.of a rotary rig sampies will <br /> not be taken through the gravel zone but will resume at five foot intervals when a <br /> hollow stem flight auger drilling rig can be used. <br /> The soil samples will be taken using a California Modified Split Spoon sampler <br /> with brass liners. The sampler will be driven by a 140 pound hammer repeatedly <br /> falling 30 inches. The blow counts necessary to drive the sampler will be recorded <br /> for each six inch interval to help evaluate the consistencies of the materials. <br /> The laboratory samples will not have head space and will be immediately sealed in <br /> their liners using aluminum foil lined plastic caps that are taped in place. The <br /> remaining sample will be removed from its liner to be used as an aide to the on-site <br /> geologist in logging the material at that depth. <br /> ° Soil samples collected for analysis will be analyzed using EPA method 8240, <br /> Purgeable Organics in a solid matrix. <br /> Ground Water Sampling <br /> A laboratory provided travel blank will accompany the sample vials from the time <br /> they are picked up from flit lab to the time they are delivered to the lab. This <br /> travel blank should be listed on the Chain of Custody but will be analyzed only if <br /> al.l samples contain the same contaminants;------- <br /> —._-- <br />