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KLEINFELDER File No. 20-3978-01.W23 February 6, 1997 • Estimates of groundwater gradient direction and water table contour maps for the monitoring event; • Description and documentation of QA/QC procedures employed for field and laboratory work; and • An assessment of the results with conclusions and recommendations for additional assessment, excavation or remediation if warranted. All information gathered during the study by Kleinfelder is considered confidential and will be released only upon written authorization from the client or as required by law. California law requires a person to inform the state if a situation is encountered that can be considered an immediate endangerment to the public's health or welfare and/or to the environment. SCHEDULE Kleinfelder could initiate field activities within 3 to 5 working day's of receiving written authorization to proceed by PHS/EHD. Our report will be submitted for client review within 10 working days of receiving analytical results. Verbal results will be provided upon our receipt of the analytical data. 'The estimated completion time for this scope of work is approximately 4 to 6 weeks from approval by PHS/EHD. CLIENT RESPONSIBILITIES AND ASSUMPTIONS > Atherton Kirk Development will assist Kleinfelder in obtaining access to the site and owner authorization for the proposed sampling. > Adequate work space and access will be provided. Kleinfelder will attempt to install the monitoring wells and collect samples at the proposed locations. If the drilling equipment cannot be positioned, alternative drilling locations or sampling methods should be investigated. > The monitoring wells are to be installed with a truck mounted drill rig equipped with hollow stem augers. It is anticipated that concrete cutting will be required to access the monitoring well locations. If difficult drilling conditions are encountered, alternative methods may be necessary. > Soil and water generated during the drilling, well installation, and sampling will be the responsibility of the client. Soil cuttings and steam cleaning water will be left on site. Sampling and analysis of the contained soil and water may be necessary prior to disposal. Disposal or remediation options for the soil and water can be assessed once analytical results have been received. Kleinfelder is prepared to assist the client and to remediate or dispose of stockpiled soil and water, if requested. 20-3978-01.W231207PE047 Page 6 of 8 01997, Kleinfelder, Inc.