8E Consent 2015 0720 - Laserfiche WebLink

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FUGRO CONSULTANTS, INC. May 5, 2015 Proposal No. 04.7214027 Carollo Engineers 2700 Ygnacio Valley Road Walnut Creek, California 94598 Attention: Mr. Zaheer Shaikh 1000 Broadway, Suite 440 Oakland, California 94607 Tel: (510) 268-0461 Fax: (510) 268-0545 Subject: Proposal for Additional Services, Water Quality Assessment — Phase 2, WCPC Contaminated Soil Relocation Project, San Leandro Water Pollution Control Plant, San Leandro, California Dear Mr. Shaikh: Fugro Consultants Inc. (Fugro) is formally requesting an amendment to our existing Task Order No. 1 for services requested to conduct the next phase of water quality assessment at the referenced site. Fugro completed Phase I of the water quality assessment in March 2015 and submitted a Plan of Action dated March 31, 2015 outlining the next steps needed to determine the quality of the water in the area of the existing sludge ponds. Fugro understands that Mr. Vic Pal of the SF RWQCB agreed with the Plan of Action which suggested that testing water samples from two of the existing onsite wells would yield representative water quality data in the vicinity of the sludge ponds. The City of San Leandro is requesting that the Plan of Action be implemented. Fugro will conduct the following activities to implement the Plan of Action: • Research local water quality data to identify data results which can be used to assess ambient water quality in the area of the sludge ponds. Fugro will contact the Port of Oakland and Regional Water Quality Control Board staff to obtain the most recent data for the surface water sampling point referred to as SW - 2 located at the Galbraith Golf Course, and Fugro will conduct research of local data within the San Francisco Estuary Institute (SFEI) CD3 website database. Ambient data will be summarized and used for comparison purposes along -side the new water quality data to be collected during this phase of work. Fugro will also research current water quality goals for comparison purposes. • Water depth readings and purging wells MW -1 and MW -4. Initially the well caps will be opened and Fugro will measure the depth to water below the existing top of well casings. At this same time the depth of water in the sludge pond near the depth gauge will be measured. The wells will then be purged up to 3 well casing volumes of water from the wells using new disposable bailers. Purged water will be added to the onsite waste storage drum located near well MW -4. During well purging, water quality parameters will be measured and recorded. Once water A member of the Fugro group of companies with offices throughout the world.