SR 05:189 - Laserfiche WebLink

City of Pleasanton, Engineering Services 4291.5.051.01 Laurel Creek Estates GHAD May 24, 2005 PROPOSAL FOR GHAD MONITORING Revised June 17, 2005 Page 2 Upon the City of Pleasanton's acceptance of the public improvements within the Kolb Ranch Estates, we propose to initiate and perform site reconnaissance twice a year to satisfy the monitoring requirements of the GHAD in accordance with Reference 3. The inspection schedule will be integrated into the existing schedule for the Laurel Creek Estates. Prior to the initial monitoring event, we will review previously published geoteehnical reports and geologic maps for the Kolb Ranch. Items that will be addressed during the monitoring events include a reconnaissance of common area slopes located adjacent to improvements; observation of areas of known landslide repair undertaken during the mass grading operations; observation of known readily accessible subdrain outlets installed during the mass grading; observation of the lined surface drainage ditches and catch basin inlets for debris; and observation of selected curb and gutter alignments. For Laurel Creek Estates (including Oak Hill Estates), we propose to conduct each regularly-scheduled twice-a-year monitoring event for a fixed-fee of $2,000 per event, including the preparation of a summary observation letter. We will conduct additional inspection events on an as-needed basis (e.g. whenever rainfall exceeds 2 inches in a 24-hour period as reported by local monitoring stations) for a fixed-fee of $1,700 per event, including the summary report. Upon the annexation of the Kolb Ranch Estates into the Laurel Creek Estates, we propose to conduct each regularly-scheduled twice-a-year monitoring event for a fixed fee of $2,400 per event, including the preparation of a summary observation letter. We will conduct additional inspection events on an as-needed basis (e.g. whenever rainfall exceeds 2 inches in a 24-hour period as reported by local monitoring stations) for a fixed-fee of $1,700 per event, including the summary report. Our office can continue the GHAD monitoring program upon receiving your authorization to proceed. Our office maintains a staff of geotechnical engineers, geologists and erosion control specialists to respond if evidence of active slope erosion or instability is observed during the GHAD monitoring. We look forward to our continued service working with you on this monitoring program. If the proposed scope of work and fee estimates is acceptable to you, please issue your standard contract for signature as authorization to proceed. If you have any questions regarding the proposal, please do not hesitate to contact us. Very truly yours, ENGEO INCORPORATED Reviewed by Donald E. Braggers Staff Geolog principal psi/deb/cc:monitoring