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� <br /> Project Overview �� <br /> 1) What are we doing? <br /> • Constructing groundwater hydraulic control and treatment system to prevent <br /> migration of TCE-impacted gro!indwater off of Boeing property <br /> • Constructing a treatme��t system building (760 sq feet) <br /> • Adding power lines (approx. 1,6fi0 LF) a�d two transformers (45 KVA/150KVA) <br /> • Adding wells (3 extraction wells, 17 monitoring wells/piezometers [3 on Lot 9]) <br /> • Adding water transfer and discharge piping (approx. 2,730 LF) <br /> - Adr�;^g a side sewer connection to sanitar,� sewer <br /> 2) Will we be impacting the environment in any way? <br /> • Excavate and backfill approx. 3,000 CY of soil for utilities trenching <br /> • Soil disturbance for building, utilities, laydown, etc. approx. 24,000 sq ft? <br /> • Limited distrubance of wetlands (temporary: 785 sq ft; permanent: 7.2 sq ft) and <br /> wetland/waterway buffers (temporary: 5,170 sq ft; permanent: 14.4 sq ft) to install <br /> piezometers and discharge piping <br /> 3) Will any trees or landscaping be removed? <br /> • Approx. 12 trees will be removed for treatment bui!ding <br /> • A few trees may be removed for discharge line near side sewer connection <br /> 4) Brief description of the TCE clean up process. <br /> • Pump TCE-contaminated grour�,dwater from 3 extraction wells to treatment building <br /> • Use air strippe:r to remove TCE from groundwater, treat vapor with activated carbon <br /> • Discharge treated groundwater to sanitary sewer <br />