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Lennar Homes of California Mountain House Creek, Parcel L, Tract 3424, Tracy 4943.410.103 Phase I Environmental Site Assessment 2.0 PREVIOUS ENVIRONMENTAL REPORTS Condor Earth Technologies, Inc., Mountain House Prosect Memo Neighborhood F Pesticide/Herbicide Report, August 3, 1998 This memo outlined some limited surface soil and groundwater sampling completed in response to mitigation measures described in the EIR dated September 1994. Two surface soil samples and one grab groundwater sample were collected. The exact location of the samples was not identified by the memo. Sample locations were stated to be shown on Drawing 1587Q-98-1, but this drawing was not included in the memo. A description of the sampling stated that the samples were collected from Neighborhood F, located west of Mountain House Parkway, approximately 1 mile south of Byron Road. The memo stated that corn and alfalfa were the crops grown in the area. The isolated samples did not identify any pesticides or herbicides in site soil or groundwater. ENGEO, Modified Phase I Environmental Assessment, Mountain House Creek, Parcel L, Tract 3424, 350 N. Estes Way, Tracy, California, March 15, 2021 In 2021, ENGEO performed a modified phase I environmental site assessment of the Property. Based on the findings of our assessment, no RECs, no historical RECs, and no controlled RECs were identified for the Property. Review of historical records indicates that the Property has been used as agricultural land since at least 1937. Since the Property was historically used for agricultural activities, an agrichemical assessment of the surface soil was conducted to evaluate the potential for residual concentrations of organochlorine pesticides (OCPs), arsenic, and lead. The agrichemical assessment did not identify any concentrations of OCPs, arsenic, or lead in surface soil that exceed relevant screening levels and/or typical naturally occurring background concentrations. 3.0 RECORDS REVIEW 3.1 PROPERTY RECORDS 3.1.1 Title Report/Ownership The Title Report lists recorded land title detail, ownership fees, leases, land contracts, easements, liens, deficiencies, and other encumbrances attached to or recorded against a subject property. Laws and regulations pertaining to land trusts vary from state to state and the detail of information presented in a Title Report can vary greatly by jurisdiction. As a result, ENGEO utilizes a Title Report, when provided to us, as a supplement to other historical record sources. A Preliminary Title Report for the Property, prepared by First American Title Company and dated April 19, 2021, was provided for our review. The Property title is vested in Sunchaser Real Estate One LLC, A Delaware Limited Liability Company. No references to environmental liens, deed restrictions, or other potential environmental issues were noted. This report is included in Appendix B. 3.2 HISTORICAL RECORD SOURCES The purpose of the historical record review is to develop a history of the previous uses or occupancies of the Property and surrounding area in order to identify those uses or occupancies that are likely to have led to RECs on the Property. .j%j EO January 28, 2022 Expect Excellence-