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Soil Sampling Field Standard Operating Procedure SWE-FSOP-405;Revision 1 Ahtna Southwest Environmental Operations 4.3.4 Soil Sampling for Physical Tests Soil sampling for physical tests may be required to support geotechnical or hydraulic analyses.Tests may include compaction, shear analysis, porosity, permeability, grain size analysis, etc. Many soil physical tests require complete intact samples remaining in various size liners. Ends of liners should be capped to preserve the soil matrix integrity, and the sample transported to the laboratory for analysis. Before laboratory analysis,the soil should not be removed from the sampler liner. 4.3.5 VOC Coring Devices Use TerraCoreTM, EnCoreT"') or equivalent devices to sample for VOC and TPH-GRO analyses Terra Core® Sampler 1. Have ready a 40ml glass VOA vial containing the appropriate preservative. With the plunger seated in the handle, push the Terra Core'. 2. Wipe all soil or debris from the outside of the Terra Core' sampler.The soil plug should be flush with the mouth of the sampler. Remove any excess soil that extends beyond the mouth of the sampler. 3. Rotate the plunger that was seated in the handle top 90° until it is aligned with the slots in the body. Place the mouth of the sampler into the 40 ml VOA vial containing the appropriate preservative and extrude the sample by pushing the plunger down. Quickly place the lid back on the 40ml VOA vial. Step 1 Step 2 Step 3 6 Unless otherwise specified in the project work plans, Terra Core samplers used 5 grams of soil for each VOA vial per EPA Method 5035. Each Terra Core sampler is used once per sample. En Core" Sampler 1. Label the En Core° sample envelope.Tear open the envelope. Hold the coring body and push the plunger rod down until the small o-ring rests against the tabs. 2. Depress locking lever on En Core®T-handle. Place coring body, plunger end first, into the open end of T-handle, aligning the two slots on the coring body with the two locking pins in the T-handle. Twist coring body clockwise to lock pins in slots. Check to ensure En Core' sampler is locked in place.The sampler is ready for use. 3. Turn T-handle with T-up and coring body down.This positions the plunger bottom flush with the bottom of the coring body. Using T-handle, push the sampler into the soil until the coring body is full. When full, a small o-ring is centered in the T-handle viewing hole. Remove the sampler from the soil. Wipe excess soil from the coring body exterior. 4. Cap coring body while it is still on T-handle. Push cap over a flat area of ridge and twist to lock the cap in place. Cap must be seated to seal the sampler. Page 13 of 15