SMITHSONIAN INSTITUTION NATIONAL ZO GEOCONCEPTS ENGINEERING INC

3001 Connecticut Ave Nw, Washington, Dc 20008
We will drill a total of seventeen, 6-inch diameter geotechnical soil test borings. Six of the borings, b1 - b5 ? B7, will be drilled to a depth of feet, four of the borings, b6 ? B8 - b10, will be drilled to a depth of 15 feet, and seven borings, swm-1 to swm-7, will be drilled to a maximum depth of feet for infiltration testing. Infiltration borings, swm-1 to swm-7, will be temporarily covered with polyethylene sheeting to help prevent groundwater contamination from surface runoff and/or precipitation, prior to testing on the following day. The infiltration testing will be performed the next day and abandoned upon completion the same day. Drilling spoils will be containerized in 55-gallon drums to be removed after chemical laboratory results have been received. Boreholes will be tremie-grouted upon completion.