37 geotechnical construction services, namely deep foundations, including slurry walls, soil stabilization, and soil improvement; civil construction services, namely earth work including grading, dam and levee construction, wetlands, stream and channel restoration; excavation services; construction project management services; wild fire clean-up services; disaster clean-up services, namely environmental remediation, removal and stabilization of soil, environmental containment of soil, localization and consolidating of soil, site assessments