GeoEngineers 10/17/2016 - Laserfiche WebLink

Page 2 of 3 5. Observe and document one day of subcontracted test pit exploration at an estimated 10 exploration locations. The test pits will extend to depths ranging from 5 to 12 feet bgs. Discrete soil samples will be obtained from each test pit at approximately 2-foot depth intervals for field screening (samples will be collected from the center of the backhoe bucket). The test pits will be backfilled with soil from each respective test pit (with the deepest soil from the test pit being placed back into the test pit excavation first and so forth). 6. Field screen soil samples from the test pits and borings for evidence of petroleum and volatiles using visual, water sheen and headspace vapor screening methods. Visually classify the samples in general accordance with ASTM D2488 and maintain a detailed log of each exploration. 7. Submit selected soil samples from each boring and test pit for chemical analysis based on the corresponding potential sources of contamination at each location, field screening results, and sample depth in relation to the water table. Each sample will be analyzed for one or more of the following: • Gasoline-range organics by NWTPH-Gx • Diesel-and heavy oil-range organics by Northwest Method NWTPH-Dx • Polycyclic aromatic hydrocarbons(PAHs) by EPA Method 8270 • Polychlorinated biphenyls(PCBs) by EPA Method 8082 • VOCs by EPA Method 8260 • Model Toxics Control Act(MICA) 5 metals by EPA Method 6000/7000 series • Asbestos by ASTM Method D7521, if building debris is encountered in test pits Samples will be submitted for analysis on standard turnaround (10 business days). 8. Collect groundwater grab samples from the direct-push borings if sufficient groundwater is encountered during drilling(for the purpose of this fee estimate we assume that 6 groundwater samples will be tested). The groundwater samples will be submitted for one or more of the following: • Gasoline-range organics by NWTPH-Gx • Diesel-and heavy oil-range organics by Northwest Method NWTPH-Dx • PAHs by EPA Method 8270 • VOCs by EPA Method 8260 Samples will be submitted for analysis on standard turnaround (10 business days). 9. Investigation wastes (decontamination rinse water and any soil spoils) will be drummed and temporarily stored on site. Our services include subcontracted transport of drummed investigation waste and off-site disposal at a permitted landfill facility. Data Interpretation and Reporting 10. Interpret field and chemical analytical data. Discuss preliminary results with the City. 11. Prepare draft and final Phase II ESA Report. Provide electronic copy of draft report for review by the City. Assume one round of comments and revision. Provide electronic and hard copies of final report. Client Meetings and Communications 12.Attend client meetings or teleconference communications. GeoEngineers,Inc. File No.0661-108-01