SITE INFORMATION AND CORRESPONDENCE

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Lopez Property (9647-0770) =1 MMMMW January 1997 Figure 2). This drill hole will be advanced to a depth of 35 feet bgs, and completed as a 2-inch diameter ground water monitoring well. The monitoring well will be screened from a depth of 25 feet to -)5 feet bgs. The completed ground water well will be developed and sampled. Soil samples will be collected at five foot intervals and will be field screened for total petroleum hydrocarbons by volume using a photoionization detector. A maximum of five soil samples per drill hole will be selected for chemical analysis by a certified Iaboratory. One soil sample will be collected for geotechnical analysis. Task 4 - Chemical Analytical Laboratory Program A maximum of five soil samples and two ground water samples will be chemically analyzed by a State of California certified laboratory, for total petroleum hydrocarbons as gasoline (TPH-g) and benzene, toluene, ethylbenzene, and xylenes(BTEC. Task 5- Geotechnical Laboratory Program To establish aquifer parameters, one soil sample collected from with the aquifer will be geotechnically analyzed for triaxial permeability in flexible wall permeater by ASTM Standard 5084. The geotechnical analysis will identify grain size, bulk density, and permeability. This data can be used for computer modeling in the event a risk assessment is conducted, or can be used as part of a risk based corrective action program. Task 6-Report Preparation Following the completion of Tasks l through 5, Fugro will prepare a technical report documenting the results of our findings, conclusions, and recommendations as they pertain to the ground water assessment program. Cost Estimate. We propose to provide the services described in Tasks 1 through 6 above on a time and expense basis. The estimated charges to complete the scope of services discussed herein are not to exceed S 7,940.70, without your prior authorization. The estimated costs are detailed in the attached cost estimate breakdown. Time Schedule Fugro anticipates that it will require I to 2 weeks to schedule subcontractors, obtain the encroachment permit and underground utilities clearance. Field activities will require 1 week; chemical and geotechnical laboratory analysis will require I to 2 weeks; and report preparation will require I week to complete. The completion of the scope of services is expected to require 4 to 6 weeks from the receipt of notice to proceed. Incffi=e weather and/or adverse subsurface conditions may delay the field activities, therefore possibly delaying the anticipated schedule, and increasing costs. 96470770.PH2 3 art-'