Laserfiche WebLink
_:tom <br /> SAI�i'�'L II�IC� €='ffi]Tt7GC�1_ <br /> Saritiple�i will be zinaly.:ead by .i 1�ttjoratory spec:i Tical ly, <br /> certified by the Calif,:.,rriia Deptirtn.erit of iti alth Service=; to <br /> per-form the anztly=,sig: requoiated. Samples will rEot br? to,cted <br /> after their aarnple lift, has been exceeded according to EPA <br /> quidel ines, and will be properly di:,posed of after analy 3is. <br /> SOIL, SAMPLING <br /> All sail sampling equipment will be thoroughly s,team- <br /> cleareed before sampling and between sasapling toprevent <br /> cross-contamination. Relatively undisturbed sail samples <br /> will be taken at intervals of not more than -Fiver feet in <br /> order to evaluate the subsurface r-raterialsi however, this <br /> sampling interval may be waived in saturated sands or gravels <br /> in which sample recrvery is not possible. <br /> The soil samples will be collected r-ising a California <br /> Modified split-spoon sampler with brass liners. The sampler <br /> will be driven by a 140 pound hawmar repo ttedly falling :30 <br /> inches (ASTM Standard 1513G). <br /> The laboratory aarnples wi;l not have head space and will <br /> be immediately sealed in their liners using aluminum Fail <br /> lined plastic caps that are taped in place. The remaining <br /> sample will be removed from its iicer^ to be used for sieve <br /> analysis, if appropriate, and to aid the cin-cite geologist in <br /> lagging the material. <br /> GROUNDWATER SAMPLING <br /> All sampling equipment, including the pump, bailer, <br /> cables, and glove warn by sampling personnel, will be <br /> disassembled if appropriate and steam cleaned prior to <br /> commencement of sampling. These procedures will also be <br /> followed between each well or sampling point and at the enol <br /> of the saerpl ing day. De-ioniysd or organic-free water will <br /> then be introduced into the pump or bailer- as the last stages <br /> of cleaning prier to the taking of each sample. <br /> Immediately prior to sampling, water levels and well <br /> depth measurement; will be taken in all wells at tine site. <br /> Each well will be evacuated using a Teflon bladder pump which <br /> dots riot introduce air into the water columna, or a Teflon <br /> bailer. At least three well volumes will be evacuated fr,�:-rn <br /> the wells. Parameters of the water cotnji.tior-, will be <br /> measured and logged darning the evacuation. These parameters <br /> shall include te=mperature, conductivity and pH. <br /> Walls that are dewatered before the evac].ratiOrn OF three <br /> well volumes has been accomplished will be sampled upoi-; SQ <br /> pe -cervi recovery of the initial water level, car upon <br /> stabilization of the water level. The walls other <br />