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California Regional Water Quality Antrol Board <br /> vCentral Valley Region � � <br /> Steven T.Butler,Chair <br /> Winston H.Hickox Gray Davis <br /> Secreoryfor Sacramento Main Off d3/7 Governor <br /> Environmental Internet Address: http://w .sw b.ca.gov/,", 4 <br /> Protection 3443 Routim Road,Suite A,Sacramento,California 9587-3003 <br /> Phone(916)255-3000•FAX(916)255-3015 <br /> 8 November 1999 <br /> Ms. Miriam Barbonio <br /> Chevron Chemical Company LLC <br /> P.O. Box 6047 <br /> San Ramon, CA 94583-0947 <br /> REVIEW OF 1999 REPORTS,KOPPEL STOCKTON TERMINAL, SAN JOAQUIN COUNTY <br /> I have reviewed the following reports that have been prepared by.CH2M Hill for the Koppel Stockton <br /> Terminal. <br /> • Quarterly Groundwater Monitoring Report, January 1999 <br /> • Quarterly Groundwater Monitoring Report, April 1999 <br /> • Quarterly Groundwater Monitoring Report, Second Quarter 1999, dated July 1999 <br /> • Quarterly Groundwater Monitoring Report, Third Quarter 1999, dated October 1999 <br /> • Monitoring Well Installation Report, dated August 1999 <br /> The Monitoring Well Installation Report describes the installation of three deep wells (KP-5D, 6D and <br /> 7D) and five shallow wells (KP-BG-1;KP-5S, 7S, 8S and 9S). Soil samples and depth-discrete <br /> groundwater samples were analyzed from the well borings. The Quarterly Monitoring Reports (QMRs) <br /> describe the water quality at the various monitoring wells. In addition, the January 1999 QMR also <br /> presents the fust soil sampling event in the poplar grove since the trees have been established, and <br /> describes nine shallow soil borings and associated samples obtained from the surface to six feet deep in <br /> the impacted areas on-site. <br /> The reports are thorough and well written. My only comments which follow,relate to formatting details. <br /> 1. Dates should be included on all the tables and figures. Although the data presented corresponds to <br /> the period to which the report title refers, it aids interpretation to have the sampling dates printed on <br /> the data tables and figures. <br /> 2. Each QMR contains a figure illustrating nitrate concentrations at the respective wells. As long as <br /> ammonia is also detected in at least one of the wells, the ammonia concentrations should be noted <br /> along with the nitrate concentrations on the figure. <br /> 3. Some of the nitrate analyses were done with field instrumentation while others were done in the <br /> laboratory. In the future, a note should be added to the data indicating what type of field equipment <br /> was used. <br /> California Environmental Protection Agency I <br /> Qa Recycled Paper ,'IV' <br />