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8.0 IDENTIFIED CONTAMINATION SOURCES The contamination sources affecting the two projects are discussed in separate sections below. 8.1 _ Sources Affectinq Parcel_-01 (Koster Road Proiect) The following sources of past, current, on-site, and off-site contamination have been identified on Parcel -01 of the Site as a result of this investigation: Identified Contamination Source Evaluation & Recommendations 1. Parcel -01 was developed for agriculture Agricultural chemicals may remain in Site in 1937 or earlier. (Current and Past on- soils. The only way to determine the site) presence or absence of these chemicals is by testing and analysis. Typically, any such testing is conducted at the property owner's discretion. 2. Agricultural chemical permits indicate The owner should be aware that residues that Parcel -01 was used to grow may remain even when chemicals are almonds, wheat, and lima beans from applied as permitted. 2006 through the present- Two Restricted Use Products, methomyl and lambda-cyhalothrin, were applied to Parcel -01 during this time. (Current and past on-site) 3. Surrounding properties are used for Agricultural chemicals continue to be agriculture. (Current and past off-site) applied to these sites. Assuming responsible application, no action is warranted at this time. I 4. One i igation well is located on Parcel - It appears that this well is currently in use. (Current on-site) i 5. The irrigation well was recently Petroleum products and related converted from diesel power to electric.'—chemicals from past use could remain in (Past on-site) the on-Site soils. The only way to determine the presence or absence of these chemicals is by testing and analysis. Typically, any such testing is conducted at the property owner's discretion. LOGE 1117 Page 11