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GB Underground is a full service excavation company specializing in Septic System repairs and Grinder Pump Installations on difficult sites. We have done Residentail Waterfront and Commercial facilities including Septic installations for businesses with commercial kitchens and delis. Some of our other services are installation of Storm systems and control devices / treatment units, trucking of sand, gravel, topsoil and landscape supplies. We have over 30 years experience in Kitsap County and surrounding areas.