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GEOTECHNICAL <br /> ENVIRONMENTAL <br /> WATER RESOURCES <br /> CONSTRUCTION SERVICES <br /> <br /> Project No: <br /> 4635.1.001.01 <br />May 24, 2005 <br /> <br />Mr. Wes Jost <br />City of Pleasanton, Engineering Services <br />200 Old Bemal Avenue <br />Pleasanton, CA 94566-0802 <br /> <br />Subject: Moller Ranch <br /> P]easanton, California <br /> <br /> PROPOSAL FOR GEOLOGIC HAZARD ABATEMENT DISTRICT <br /> (GHAD) MONITORING <br /> <br />Dear Mr. Jost: <br /> <br />As requested, ENGEO is pleased to provide this proposal with fee estimates to continue GHAD <br />monitoring of the Moller Ranch property. <br /> <br />We propose to continue performing site reconnaissance twice a year to satisfy the monitoring <br />requirements of the GHAD. Prior to each monitoring event, areas of particular concern documented <br />in previous reports and in the Plan of Control will be identified for incorporation into the site <br />inspection schedule. Some of the items that will be addressed during the monitoring events include: <br />a reconnaissance of common area cut slopes located adjacent to improvements; observation of areas <br />of known landslide repair undertaken during the mass grading operations; observation of known <br />readily accessible subdrain outlets installed during the mass grading; observation of the lined <br />surface drainage ditches and catch basin in]ets for debris; and observation of selected curb and <br />gutter alignments. We will also review areas of potential slope instability that were documented in <br />earlier geotechnical studies and that are located adjacent to existing improvements. <br /> <br />We propose to conduct each regularly-scheduled twice-a-year monitoring event for a fixed-fee of <br />$1,900, including the preparation of a summary observation letter. We will conduct additional <br />inspection events on an as-needed basis (e.g. within 48 hours after a significant rain event) for a <br />fixed-fee of $1,700 per event, including the summary report. <br /> <br />Our office can continue the GHAD monitoring program upon receiving your authorization to <br />proceed. Our office maintains a staff of geotechnical engineers, geologists and erosion control <br />specialists to respond if evidence of active slope erosion or instability is observed during the GHAD <br />monitoring. <br /> <br /> 2010 Crow Canyon Place · Suite 250 · San Ramon, CA 94583-4634 · (925) 866-9000 * Fax (925) 866-0199 <br /> <br /> <br />