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Page 9 7.0 Summary r Based on available information, there is a significant risk of hazardous waste involvement within the proposed project area. This risk varies dependent upon partial/total take of a parcel as well as the depth of any excavation within the project area. Additional assessment and possibly technical investigations will need to be conducted during formal environmental studies. It is recommended that time and costs for investigation and possible cleanup be included in the project schedule. The landowner is responsible to report and to remediate any contamination found on his/her site. However, in order to quantify contamination a site investigation should be conducted. The investigation would consist of borings actually drilled on site at various depths and samples taken to determine the depth and width of the plume, the specific types of contaminates and their concentrations. If an investigation has not been conducted it is almost impossible to predict what one may find. And though it is the responsibility of the landowner, most have not performed a site investigation and therefore do not know if they have contamination and to what extent nor do they have t_he financial means' to address the situation. There is an account which does provide funds to help the landowner and some have taken advantage of it despite the mounds of paper work and the long wait. Since the sites in Categon, I are known and listed with the local agencies, chances are these sites have begun some process of site assessment and the landowners should have some idea as to what/when clean up of contamination should cost/start. Some analysis should be considered regarding the purchase or partial take of the parcels involved. EXAMPLE. If we do not plan to actually purchase the property and the depth of excavation is less than five feet then chances are we will not encounter contamination during excavation and if we do cost of cleanup should be bore by the landowner. If we do plan to purchase the property, then find out how close the property owner is to defining the plume of contamination, estimate the remainder of work to be completed and how aggressive the landowner is and evaluate if all work will be completed in time to meet your deadline. However, should it be necessary to investigate/remediate the three sites in Category I, the eight.sites in Category H and the sig sites in Category III at an approximate cost of $300,000 per site or total cost of $4,800,000. Should the Category III sites not impede the project limits and it is necessary to investigate/remediate only the sites in Categories I and Il the cost could be $3,000,000 or more. These estimates may cover costs to clean up soil contamination only in parcels necessarily purchased as part of this project.