SITE INFORMATION AND CORRESPONDENCE

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1. History and background of the site Findings of the investigation The 14 acre site was used as the State of California In August 2003,an environmental investigation was Insane Asylum from 1853 through the 1970's.It was conducted to ensure the site was safe to build an known as the Stockton Developmental Center or the elementary school. During the investigation,lead- Stockton State Hospital when it was used as a mental based paint residue levels were found as high as 9,200 health facility. The site was previously occupied by nine parts per million(ppm. It is likely that lead-based buildings (Grant House,Delta Center,Rehabilitation residue came from the walls and garages of the Center,Sewage Pump Station and several houses). It is former Grant House,Delta Center and Rehabilitation currently owned by California State University Center.In addition,dieldrin was found as high as Stanislaus Stockton Multi-Campus (CSq. CSU took 0.078 ppm Dieldrin was commonly used on crops, possession of the site in 1996,at which time some home lawns and gardens to control termites. buildings were used for the CSU Stanislaus,Stockton Children can get lead in their bodies from eating lead- Multi-Campus and others were leased to local based paint chips or from playing in soil containing organizations.As of May 2005,all buildings have been lead. Children can get dieldrin in their bodies through removed from the site. ingestion of soil,direct contact with soil,or inhalation of dust containing dieldrin. Because the elevated levels pose a potential threat to human health and the environment,DTSC is requiring the school district cleanup the lead to a level of 255 ppm and the dieldrin to 0.045 ppm before building the school. Site Ma n EF } Legend t ®� SW RemavalAreas Site t7�ndsty tHwse4 G I 11.11,1= tz � l k Rehabililainn Sewage 1' shdm i�� Iki e( h L Center 2 t Ing 200 trtfitii.lt7 -SA