Common use of Metals Clause in Contracts

Metals. Metal analyses were conducted on soil and groundwater. In only one case did a metal exceed the State TTLC that classifies soil as hazardous waste for disposal purposes (Marshack, 1988); this was a subsurface soil sample in the refuse fill area that had 3000 ppm lead. Two prior Levi▇▇-▇▇▇▇▇▇ ▇▇▇surface soil samples (one panhandle and one non-refuse fill area) had elevated lead concentrations of 3800 ppm and 2000 ppm. McLaren's groundwater analytic results for metals were consistent with Levi▇▇-▇▇▇▇▇▇'▇ ▇▇▇ults. Although the water is brackish at the site, and therefore unsuitable for drinking, the metals detected in the shallow groundwater were generally below California's Maximum Contaminant Levels (MCLs) for drinking water (CDHS, 1989). Only a few metals slightly exceeded the MCLs. Therefore, the groundwater is near drinking water quality relative to metal concentrations. No elevated metal concentrations were detected in surface water from Belmont Slough. Based on the sampling results, exposure to metals at the site is not considered to pose the potential for creating significant adverse health effects.