SITE INFORMATION AND CORRESPONDENCE

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OIL • 0 Paradise Point Marina - 2 - 8 January 2016 Stockton, San Joaquin County 6. Future reports/work plans submitted to the Central Valley Water Board should be stamped by a California registered professional engineer or geologist. Future work plans and reports submitted to the Central Valley Water Board are to be accompanied by a cover letter from you, the responsible party, stating that the report being transmitting is accurate and true to the best of your knowledge, that you agree/disagree with your consultant's findings, and should state your recommendations or requests for the Site (e.g. request for closure, etc.); and, 7. By 29 April 2016, submit a report documenting the findings of your investigation. Should the investigation proposed in the Work Plan fail to delineate the lateral or vertical extent of the release, the report of findings should propose work to further delineate petroleum impacts to soil and groundwater. In a 22 October 2015 staff letter, Central Valley Water Board staff requested that you notify us of the disposal method for the petroleum impacted soil excavated in October 2015. On 4 November 2015, Howard Weinberg informed Central Valley Water Board staff that he intended to remediate the stockpiled petroleum impacted soil onsite and then use the remediated soil as onsite fill. The stockpiled soil is currently stored on and covered with plastic sheeting and surrounded by straw waddles that are not properly secured. By 1 February 2016 submit a description of the means you will employ to remediate the impacted soil, how and when you will test the soil for hydrocarbons, the cleanup levels you intend to meet, and the best management practices you will employ to prevent stockpile erosion. It is advisable to consult a Qualified Stormwater Pollution Prevention Plan (SWPPP) Developer or similarly trained professional to ensure that industry standards are followed and best management practices (BMPs) are Site appropriate and properly installed. Once the remediated soil is used as fill onsite, the soil surface must be permanently stabilized to prevent erosion. The 22 October 2015 staff letter also requested a report documenting the results of the October 2015 excavation and the installation and operation of the extraction well [planned infiltration trench]. This report was due 15 December 2015 and was to include an estimate of the amount of petroleum released and the amount recovered by excavation and the groundwater extraction system. This report is overdue and should be submitted as soon as possible. Your cooperation in conducting the cleanup and investigation at the Site is a determining factor in Central Valley Water Board staffs decision to continue to work with you on a voluntary basis or recommend you to the Central Valley Water Board for formal enforcement action. In summary, you need to implement the investigation proposed in the Work Plan, incorporating the above comments, and submit a report to GeoTracker documenting the results of your investigation by 29 April 2016. By 1 February 2016, you must notify Central Valley Water Board staff of the means by which you intend to remediate and manage the petroleum impacted soil currently stockpiled at the Site. Submit a report documenting the results of your interim remedial actions, which was due 15 December 2015. If you have any questions or concerns, please contact Emily Cushman at(916)464-4696 or emily.cushman@waterboards.ca.gov. EMILY CUOH AN Deanks E. C G 45 Engineering eologist Enforcement ni 1 cc (via email): Robert Lopez, San Joaquin County Environmental Health Dept., Stockton Marc Hardy, Stockton Westlake Marina LLC James Dunn; PES Environmental, Inc., Novato Todd Hafner, Cardno ATC, Modesto