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Former Boulevard Automotive - 2 - 20 October 2016 2151 Country Club Blvd. BAS and its consultant, AGE, propose to inject a solution of hydrogen peroxide into the groundwater at 18 points (DPE-1 and DPE-2, nine proposed shallow depth injection wells, and 7 proposed intermediate depth injection wells) around and downgradient of the former UST locations (Figures 1 and 2) in accordance with the 11 March 2014 Corrective Action Plan prepared on your behalf by AGE. As indicated in the 13 July 2012 In-Situ Chemical Oxidation Pilot Study Report, in-situ chemical oxidation is a viable remedial approach for the Site. Analytical testing will be performed on select monitoring wells in accordance with the enclosed MRP to assess the effectiveness of the remediation effort and to ensure breakdown products generated or mobilized from the injections do not exceed water quality objectives and groundwater limitations based on naturally occurring background water quality. As indicated in the attached MRP, if groundwater quality is degraded and exceeds values in the General Order due to the in-situ chemical oxidation remediation, a contingency plan will be implemented. The contingency plan states that injections will be terminated and wells exceeding the General Order limits will be bulk purged until baseline conditions are attained. No comments were received on the Corrective Action Plan during the 30-day public comment period that ended on 8 August 2014. General Information: The project will be operated in accordance with the requirements contained in the General Order No. R5-2015-0012 and in accordance with the information submitted in the Notice of Intent, and otherwise as specified in this Notice of Applicability (NOA). The required annual fee (as specified in the annual billing you will receive from the State Water Resources Control Board) shall be submitted until this NOA is officially rescinded. Injection of material other than those specified in the NOI into the subsurface is prohibited, unless analysis, as specified in General Order No. R5-2015-0012, of the injectant is provided and approval is granted by Central Valley Water Board staff. Failure to abide by the conditions of the General Order and this NOA can result in enforcement actions as authorized by provisions of the California Water Code. The Discharger shall comply with the attached MRP and any revisions thereto as ordered by the Executive Officer or directed by Central Valley Water Board staff. If you have any questions regarding this NOA, please contact Christopher Flower at (916) 464-4836, or by e-mail at chris.flower@waterboards.ca.gov. LL- 61! ( PAMELA CREEDON Executive Officer kL) Enclosure: General Order R5-2015-0012 and MRP cc: Ms. Jovel Vossler, Regional Water Quality Control Board, Rancho Cordova Ms. Angelica Mann, San Joaquin County Environmental Health Department, Stockton Mr. Daniel Villanueva, Advanced GeoEnvironmental, Inc., Stockton