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Table 1 <br /> Sampling Matrix <br /> Lincoln Center <br /> Stockton,California <br /> Data or Sample Sample Sampling Number of <br /> Data Collection Activity Collection BoringrWell Construction Details Sample Depth Data Collection or Sampling Method Samples par Laboratory Analysis <br /> Location Medium Frequency Event <br /> Installation of 1 exploratory Boring FB1 Boring EB1 will be advanced to the top of the Soil . Within A- 24 ounces of soil representative of the A-zone Once Two . COD(Method <br /> boring within the Phase V B/C-Aquilam. After samples are obtained, Zone Aquifer Aquifer and 24 ounces of soil representative of 5220C) <br /> area. the holing will be backfilled with grout and Within B- the B-zone Aquifer will be collected directly from . As,Ca.Cr,Fe,K, <br /> abandoned in accordance with applicable Zone Aquifer the continuous core and transferred into Mn,Na(Method <br /> regulations. laboratory supplied glass jars to be composited 60108) <br /> at the laboratory. . Sulfate.Nitrate as <br /> Installation of 2 soil borings Boring B3 Borings 82 and B4 will be advanced to a N,Nitrite as N <br /> within the plume. Boring B4 maximum depth of 140 feet bgs. After (Method 300) <br /> samples are obtained,the borings will be <br /> convened into B-Zone groundwater Groundwater 10 fool intervals Groundwater samples will be collected using a Once To be determined . VOCs(Method <br /> monitoring wells as described below. within the A-and hydropunch sampler and transferred into based on field 82606) <br /> B-Zone aquifers laboratory supplied VOA vials. conditions <br /> Installation of 4 A-zone Boling At/Well Al All wells will be constructed using schedule Groundwater Center of the Groundwater samples will be collected within Quarterly One VOCs(Method <br /> groundwater monitoring 80,2-inch PVC casing with a flush mount completed designated PDBs and transferred into laboratory 82608) <br /> wells within and Boring A2/Well A2 surface completion. monitoring well supplied VOA vials, <br /> downgradient of the plume. screen <br /> Boring A3/Well A3 Well screen intervals will be based on field <br /> observations and range between 40 and 70 <br /> Boring AV Well A4 feet bgs. <br /> Installation of 4 B-Zone Boring B1/Well B1 All wells will be constructed using schedule Groundwater Center of the Groundwater samples will be collected within Quarterly One VOCs(Method <br /> groundwater monitoring 80,2-inch PVC casing with a flush mount completed designated PDBs and transferred into laboratory 82608) <br /> wells within and Bering 82/Well B2 surface completion. monitoring well supplied VOA vials. <br /> downgradient of the plume. screen <br /> Boring B3/Well B3 Well screen intervals will be based on field <br /> observations and range between 80 and 130 <br /> Boling B4/Well B4 feet bgs. <br /> Installation of 1 A-Zone Bonrg A5/Well AS All wells will be constructed using schedule Groundwater Center of the Groundwater samples will be collected within Quarterly One VOCs(Melhotl <br /> groundwater monitoring 80.2-inch PVC casing with a gush mount completed designated PDBs and transferred into laboratory 8260B) <br /> wen downgmdient of the surface completion. monitoring well supplied VOA vials. <br /> plume. screen <br /> Well screen intervals will be based on field <br /> observations and range between 40 and 70 <br /> feet bgs. <br /> Notes: <br /> As=arsenic Fe=iron PDBs=passive diffusion bags <br /> bgs=below ground surface K=potassium PVC=polyvinyl chloride <br /> Cis=calcium Mn=manganese VOA=volatile organic analysis <br /> COD=chemical oxygen demand N=nitrogen VOCs=volatile organic compounds <br /> Cr=chromium Na=sodium <br /> Geo:mtec oonsulanls.Inc. <br /> Page t of <br />