SITE INFORMATION AND CORRESPONDENCE_FILE 1

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June 30, 1995 `' r Page 1 1 soils support this. However, to investigate the soil contamination that has been inferred four additional soil borings are being proposed. 2. Residual soil and groundwater contamination act as a nuisance to the people of San Joaquin County per San Joaquin County Development Title Chapter 9-1125, Water Quality Regulations and the State of California Water Code Division 7, Chapter 2 (m). Hydrocarbons underlying the site act as a potential nuisance to the people of San Joaquin County. Although these hydrocarbons exist at low concentrations, use or contact of these hydrocarbon-affected media with the public is non-occurring. ' To ensure that the hydrocarbon impact does not act as a nuisance to the people of San Joaquin County, engineered health and safety management controls (previously referred to as institutional controls) should be put into effect at the site. These controls may consist of the following: 1) monitoring the containment of the dissolved hydrocarbons that underlay the site through a network of monitoring wells, 2) regular analyses of groundwater parameters to confirm the remediation of hydrocarbons through natural processes, 3) documentation which demonstrates no foreseeable land use changes that would allow public use or contact of the potential nuisance, and 4) the Water Code; The Water Code provides enforcement mechanisms in the case that clean up criteria are not appropriately implemented. 5.0 REMEDIATION 5.1 Remedial Objectives 1. Acceptable soil and groundwater objectives have not been estab- lished There is no legal way to achieve institutional controls. It is PACMIC's opinion that reasonable and stringent water quality goals were proposed in the CAP and engineered health and safety management controls can be achieved as previously discussed. 32013 570CAPLET.DOC.doe