Ballpark Construction Support Project

Ninyo & Moore provided expanded Phase I and II environmental consulting and geotechnical services for a new ballpark and ancillary development project which involved the redevelopment of a 26-block area. Tasks for this Brownfields/Polanco Act Project included review of Phase I, Phase II, and remedial action plans, data, and recommendations; preparation of hazardous materials bid specifications; development of a protocol for the evaluation, monitoring, and documentation of export soil; preparation of a hazardous materials response plan which included contaminated soil reuse criteria; monitoring and coordination of removal actions; and liaison between the local Department of Environment Health (the USEPA-designated lead agency for the project) and the numerous project stakeholders and their consultants. Ninyo & Moore provided these services on behalf of the local city agency, the ballclub, Jacobs/Sverdrup, the local gas and electric company, JMI Realty, UNOCAL, and Hines, the design/construction manager. Project challenges included the establishment of background and cleanup levels for constituents of potential concern (CPOCs) with respect to construction, end use, health and safety, and potential off-site reuse; development of acceptable on-site reuse options for contaminated soil; coordination of monitoring and remedial efforts with construction staging requirements; emergency response to hazardous materials discovered during excavation/construction; and the identifying of acceptable off-site locations, based on end use, distance from site, and construction schedule, for the large volume of export soil. Ninyo & Moore personnel documented site excavation activities and tunneling by preparing daily work logs and field reports. For some excavation areas, soil and burned refuse/ash stockpiles, were characterized and classified for off site disposal. Ninyo & Moore's geotechnical scope of services included an extensive evaluation of the subsurface soils and geologic conditions at the site; geotechnical design analyses, including seismicity and liquefaction potential; and provision of recommendations for earthwork and construction procedures. Later in the project, Ninyo & Moore performed subsequent environmental sampling and geotechnical analysis, and soil classification to establish geotechnical design parameters associated with microtunneling of utilities below railroad tracks, which were underlain by soil and burned refuse/ash. Ninyo & Moore's investigation also included satisfying permit requirements. Ninyo & Moore coordinated all activities with local regulatory agencies, and provided assistance for presentations, scoping of work, and meetings.