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Mike Infurna [EH] Jay Jahangiri [TRECONSULTING@attbi.com] Friday, June 13, 2003 11:32 AM Wendy Cohen Mike Infurna [EH]; Norman Hauser; Al Gamier; Thomas Mogan; Catherine Hall-Kanellis; Leif Gistrand; CMPRGCEGHG©aol.com; jhvle Le Re: Metropolitan Stevedore Constituents of Concern From: Sent To: Cc: Subject: Importance: High `if\AAA1_ Good Morning Wendy: Thank you for your response and guidance, which provides a good deal of technical sense into our sampling and analyzes efforts for Metropolitan Stevedore Company's (MSC) monitoring wells slated to be closed. In discussions with MSC's management, in good faith, MSC is willing to analyze the ground water samples for the additional constituents that the CVRWQCB has proposed. In agreeing to add these additional constituents to our sampling and analyses of these wells, we would, however, like to point out the following: The addition of vanadium and nickel is supported by good science and literature data that shows a small fraction of vanadium and nickel to be present as constituents of thermocracked (green) coke as indicated by the material safety data sheet of the themrocracked green coke, which came from Martinez, CA shell refinery. While MSC agrees to analyze the ground water for TOC and TDS, we would like to point out the following: 2.1. MSC's most recent storm water monitoring data shows the TOC concentration to be at 5 mg/1, which was sampled in MSC's storm water retention basin. Hence, this represents a very insignificant TOC loading impact from the storm water run off. 2.2. Relative to TDS, we note that the most recent storm water run off data shows TDS to be at 960 mg/1, which was sampled from MSC's storm water retention basin. For the record, MSC's TDS data is below the background conditions found in the ground water basin in the greater San Joaquin County. Background condition of 1,000 mg/1 are typical background values in the greater San Joaquin County's ground water basin. 2.3. Relative to Sulfate and Sulfur, again for the record, MSC merely conveys Sulfur via an integrated conveyor system which meets or exceeds BAT/BCT and MSC does not store it in place. In summary and as indicated earlier, MSC will be sampling the ground water for the following constituents: Polyaromatic hydrocarbons (PAH) Copper: Cu Nickel: Ni Vanadium: V Total dissolved solids (TDS) Total organic carbon (TOC) Sulfur Sulfate As indicated earlier, it should, however, be pointed out that other entities predating to and contemporaneous to MSC's operations on site have been involved in operations and activities that containining the above COCs 1