Quad Knopf provides community master planning, environmental documentation and civil engineering services. Its planning services include development of sports park, school campuses, fire stations and neighborhood parks. Its services include, design survey, acquisition maps and monument establishment, construction plans, environmental processing, and mitigation measures and utilities relocation. It also offers traffic analysis and design, sign and signal modification, bridge culvert structural plans and preparation of cost estimates. It also provides water treatment facility for the removal of citys groundwater. The company additionally constructs indoor sports court for racquetball and other sports, such as handball, squash and basketball. Quad Knopf is located in Visalia, Calif.