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F <br /> S l <br /> Table 1 <br /> Sampling Matrix <br /> Lincoln Center <br /> 1 <br /> Stockton, California <br /> Data or Sample Number of <br /> Data Collection Activity Collection Boring/Well Construction Details Sample Sample Depth Data Collection or Sampling Method Sampling Samples per Laboratory Analysis <br /> Location Medium Frequency Event <br /> Installation of 1 exploratory Boring EB1 Boring EBI 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 BIC-Aquitard. After samples are obtained, Zone Aquifer Aquifer and 24 ounces of soil representative of 5220C) <br /> area. the boring 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 6010B) <br /> at the laboratory. • Sulfate, Nitrate as <br /> Installation of 2 soil borings Boring B3 Borings B2 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 /> converted into B-Zone groundwater Groundwater 10 foot 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 Boring A11 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 8260B) <br /> wells within and Boring A21 Well A2 surface completion. monitoring well supplied VOA vials. <br /> downgradient of the plume. screen <br /> Boring A31 Well A3 Well screen intervals will be based on field <br /> observations and range between 40 and 70 <br /> Boring A41 Well A4 feet bgs. <br /> Installation of 4 B-Zone Boring B11 Well 131 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 8260B) <br /> wells within and Boring B21 Well B2 surface completion, monitoring well supplied VOA vials. <br /> downgradient of the plume. screen <br /> Boring B31 Well B3 Well screen intervals will be based on field <br /> observations and range between 80 and 130 <br /> Boring B4I Well B4 feet bgs. <br /> Installation of 1 A-Zone Boring A51 Well A5 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 82606) <br /> well downgradient 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 /> Ca = calcium Mn = manganese VOA = volatile organic analysis <br /> COD = chemical oxygen demand N = nitrogen VOCs =volatile organic compounds <br /> Cr = chromium Na = sodium <br /> Geosyntec Consultants,Inc. <br /> Page 1 of 1 <br />