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KLE1NEELDER 1995. Due to the dowmgradient location of the subject site, the facility may site. It is Kleinfelder's recommendations that KB Homes follow uall Substance Control concerning the PEAS findings and its Potential ll impact the subject a eertm impact to the p with the Department of Toxic 9) The Lodi Groundwater Site encompasses approximately 1500 acres fl Turner Road(north)to Kettleman Lane(south)to Highway 99 (east) to Fairmorrt Road(west). Two reports produced b Inc. Environmental Engineering Services were reviewed b Investigation Report"and "Fourth Quarter 2001 Quarterly Groundwater Monitorin y Henshaw Associates, y Kleinfelder entitled "Phase I Investigation Site contamination in and around the vicinity of the City of Lodi was researched and the effects on the subject site were evaluated. According to the "Phase I Investigation Site Investigation and Report,,eport" Groundwater to the south-southeast through the subject site. The subject site lies within the assumed Holz Rubber Company local contaminated groundwater contaminated area. The total concentration of VOCs e1directly around the Holz Rubber Company were detected at 260 ppb (1,1,1-TCA, I,I-DCA, I The "Fourth Quarter 2001 Quarterly Groundwater Monitor I_n groundwater concentrations in and monitoring and trends in VOCs near the subject site. Municipal well ed to(600 feet north-northwest) and monitorin well �_ g Report" was reviewed to evaluate was detected in MW- g 20 (500 feet west) were evaluated based upon distance. PCE 8 at a level of 3.6 ppb in December of 2001, the highest concentration of PCE was detected in March of 2001 at 12 ppb. PCE was detected in MW-20 at 0.66 ppb in December of 2001, previous levels were non-detect. Kleinfelder recommends continual research into the current status of the Lodi Area of Contamination though the Department of Toxic Substances. Depending upon the limits of contamination groundwater sampling along the sites property boundary may be needed to assess the Potential impact to the subject site. If contamination attributable to the Holz Rubber company or other adjacent properties is discovered on site, the expense and/or liability associated with any necessary investigation or remediation would typically fall upon the responsible parties. 11) The existence or removal of the UST, reported by Mr. Neuharth, should be verified through historical documentation of permit forms obtained through the State Regional Water Quality Control Board. Soil samPlutg in the vicinity of the UST is also recommended to confirm for previous leakage of the UST and tank integrity. The following scope of work was developed to evaluate the previous listed and numbered opinions and findings. PROPOSED SERVICES This proposal details the scope of work for a Phase H Environmental Site Assessment of the property. Please note that the intent of a Phase lI ESA is to follow up on concerns identified in a Phase I ESA. It is not the intent of a Phase U ESA to identify the extent of contamination or ascertain cleanup costs for the contaminants (if present). Said services may be provided following the proposed services (if contamination exists), at an additional cost. Also, please note that the recommendations not mentioned in this proposal are either general recommendations or statements for the property, related to offsite properties, or were not requested to be addressed by the client in this proposal. A proposal can be issued by Kleinfelder to address any additional concerns, upon the request of the client. Kleinfelder's following tasks address both soil and groundwater sampling. Soisampin ig is proposed for past agricultural chemical over the subject site and selected petroleum constituents l in the area of a former underground storage tank (UST). Groundwater sampling is also recommended to assess potential offsite sources of concern from various petroleum, dry cleaning 02001PROP.ENV I ST03PO65 Page 2 of 10 Copyright 2003,Kleinfelder,Inc. February 20,2003