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A.� <br /> ED:IU M1I:C. Qaflwly Je. <br /> Water Boards MAR 2 5 X013 . <br /> Central Valley Regional Water Quality I B66 <br /> 22 March 2013 <br /> Mr. Robert Truedinger <br /> Kinder Morgan Energy Partners <br /> 1140 Canal Blvd <br /> Richmond, CA 94804 <br /> COMBINED SEMIANNUAL AND ANNUAL 2012 GROUNDWATER MONITORING REPORT, <br /> KINDER MORGAN ENERGY PARTNERS STOCKTON TERMINAL, 2947 NAVY DRIVE, <br /> STOCKTON, SAN JOAQUIN COUNTY <br /> California Regional Water Quality Control Board, Central Valley Region (Central Valley Water <br /> Board) staff reviewed the 31 January 2013 Combined Semiannual and Annual 2012 <br /> Groundwater Monitoring Report (Report) submitted by ARCADIS U.S. Inc (ARCADIS) on behalf <br /> of SFPP, L.P., operating partnership of Kinder Morgan Energy Partners (KMEP) for the pipeline <br /> manifold area at 2947 Navy Drive in Stockton (Site). The Site consists of a petroleum pipeline <br /> manifold area and is surrounded by bulk fuel terminals. <br /> The Report summarizes the fourth quarter 2012 groundwater monitoring event. Depth to <br /> groundwater ranged from 5 feet below ground surface (bgs) to 7 feet bgs and flow was <br /> generally toward the northeast. The maximum concentrations of total petroleum hydrocarbons <br /> as gasoline (TPHg), TPH as diesel (TPHd), benzene, methyl tert butyl ether (MTBE), and tert <br /> butyl alcohol (TBA) were 35,000 micrograms per liter (pg/L), 6,900 pg/L, 15,000 pg/L, 430 pg/L, <br /> and 72,000 pg/,L, respectively. <br /> The Report also includes a comparison of groundwater analytical data obtained by both <br /> conventional purge and sample methods and passive sampling with a HydraSleeve sampler. <br /> KMEP concluded that the two methods were comparable, however the HydraSleeve results <br /> may result in slightly lower concentrations. These results are consistent with historical results. <br /> KMEP states that the conventional purge method will be biased toward groundwater residing in <br /> more permeable intervals surrounding the wells, while the HydraSleeve sampling will tend to be <br /> more representative of groundwater flowing through the sampled well. <br /> KAR- L. LOIJOL[Y Sc.D, P.E.,CHAIR i I AMCLA C. CP.E000N P.E.. ECCE, EXECUTIVE OFFICER <br /> 11020 Sun Gem-Drive#200.Rancho Cordova CA 95670 , wwvj walerboard%ca gav/cenlralvalley <br /> LD r, , r_I.I .u.. <br />