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Description of Work <br /> Former Gun Club Area A Pond D and Area C Interim Action Cleanup <br /> The proposed project is a soil and sediment removal Intenm Action (IA) at the Former <br /> Gun Club Area A Pond D and Area C. The Former Gun Club is located in the Northeast <br /> Y. of the Southeast Y� of Section 15, Township 28 North, Range 4 East, west of Airport <br /> Road and directly south of Boeing Lake in Snohomish County, Washington (see Figures <br /> 1 and 2). Pond D is approximately 0.25 acres in the northeast corner of Area A, loca+ed <br /> west of 29th Avenue West (West Frontage Road) and south of 941h Street SW <br /> (BOMARC Road) Area C is approximately 3 acres and is located between 29th <br /> Avenue West (West Frontage Road) and Airport Road, south of 94th Street SW <br /> (BOMARC Road). A site plan of Area A Pond D and Area C is shown on Figure 3. <br /> The IA will be conducted under the oversight of the Washington State Department of <br /> Ecology (Ecology) as part of the Resource Conservation and Recovery Act (RCRA) <br /> Corrective Action Agreed Order betweer� Boeing and Ecology, and to fulfill the <br /> requirements of the Washington State Model Toxics Control Act (MTCA). The objective <br /> of the IA is to remove soil containing polynuclear aromatic hydrocarbons (PAHs) and <br /> metals at concentratiuns exceeding current applicable MTCA cleanup levels. The <br /> scope will include clearing and grubbing, and removal of approximately 5,100 cubic <br /> yards of soil and sediment from Area A Pond D and Area C (see Figures 4 and 5). Field <br /> monitoring and laboratory analysis oF PAHs and metals will be conducted to confirm that <br /> IA cleanup objectives are met, and, rf necessary, determine ii additional contaminaled <br /> soil and sedimenlation excavation is required. Soil will be hauled offsite to a disposal <br /> facility permitted b accept the waste. <br /> Following excavation of conlammated soil and sediment at Area A Pond D, the site <br /> restoraUon acNvities will be performed as shown in the site resloration plan (Figure 6). <br /> Soil will be imported and graded to reconstruct the excavation area to previous grades. <br /> Following reconstruclion, Area A Pond D will be hydroseeded if Boeing plans on <br /> developmg Area C immediately following the soil and sediment IA(under a separate <br /> pro�ecl►, then no site restoraiion or stabtlization will be performed as part o( this pro�ect <br /> If site developmenl work will not occur immediately followmg lhe soil and sediment IA, <br /> site restoraUon ac6vities wdl be performed as shown m the site restora6on plan provided <br /> on Figure 7. Sod at Area C will be regraded to maintain the general surface water flow <br /> directions present at the sile prior to the soil and sediment excavation activities <br /> Materials will only be imported i( the surface water flow directions cannot be maintained <br /> by regradmg alone, or d differeM materials are needed for erosion control Following <br /> regrading, the site wdl be hydroseeded <br />