Laserfiche WebLink
1 Former Nelson Ready Mix Page 6 <br /> Groundwater Monitoring Well Construction <br />' GPE Protect No 11112 <br /> March 30,2006 <br />' polyethylene drums, properly labeled, and temporarily stored on-site The rate <br /> of well purging was monitored, and each well was purged of at least three casing <br /> volumes or until the groundwater parameters (temperature, conductivity, and <br />' pH) had stabilized indicating that water representative of actual aquifer <br /> conditions was entering the well Groundwater parameter stabilization was <br /> characterized by three successive readings within 10 percent <br /> The sample water was carefully transferred to 1-liter amber glass bottles and 40 <br /> ml VOA vials preserved with hydrochloric acid provided by the laboratory <br /> Extreme care was taken to prevent agitation of the sample before they were <br /> sealed Disposable gloves were worn by the sampling technician while collecting <br />' all samples The gloves were changed between the collection of each sample to <br /> reduce the potential for cross-contamination All VOA sample containers were <br /> checked for head space bubbles After being closed, each container was labeled, <br />' inserted into foam holders and placed in an ice chest cooled to 4°C for transport <br /> to the laboratory <br /> 23 Waste Disposal <br /> As described above, a stockpile was established from the over-excavation of the <br /> . tank pit During drilling, the soil cuttings were stored in the stockpile <br /> established from the pit excavation On January 10, 2006, a total of six <br /> composite soil samples were collected from the stockpile to assess the progress of <br /> bioremediation The stockpile was roughly mapped and divided into six, <br /> approximately equal areas Four soil samples were collected from each of these <br /> areas and blended to create a single, composite sample for each of the six areas <br />' The samples were places in 2-inch by 6-inch stainless steel sample containers, <br /> sealed, labeled, and placed in an ice chest for transport to the laboratory under <br /> chain-of-custody protocol The samples were transported to Argon Laboratories <br /> of Ceres, CA for analytical testing The following table summarizes the <br /> laboratory results <br />' TEXT TABLE 1 Spoil Pile Samples <br /> Sample I D TPH D <br /> SP-1 19 <br /> SP-2 150 <br /> SP-3 75 <br /> SP-4 ND<5 <br />' SP-5 ND<5 <br /> SP-6 ND<5 <br /> MDL 5 mg/KV, <br /> ND = Not Detectable <br />' 2937 Venenaan Ave ,#13240 Geo-Phase Environmental Inc Phone (209) 569-0293 <br /> Modesto, CA 95356 Fax (209) 569-0293 <br />