SITE INFORMATION AND CORRESPONDENCE

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MONITORING AND REPOR iZ,'JG PROGRAM ND. R5,-2.006-0804 -2 - CHEVRON 2 -CHEVRON PIPELINE COMPANY CORRAL HOLLOW AND GRANTLINE ROADS -' SAN,JOAQUIN COUNTY �z r Constituents EPA Analytical.Method `Maximum Practical Sampling +` Quantitation Limit Frequency i�(rg/l)t Depth to Groundwater --- , a --- Semi-annually Total Petroleum Hydrocarbons2 8015M 50 Semi-annually Benzene 8020 or 8260B 0.5 Semi-annually Toluene 8020 or 8260B 0.5- Semi-annually Ethylbenzene 8020 or 8260B_ 0.5 t Semi-annually Xylene l 8020.or 8260B'. ,;, 0.5 ' Semi-annually PAHs3 . 8270 Varies Semi-annually J 1 For nondetectable results. Allconcentrations between the Method Detection Limit and the Practical Quantitation Limit shall be reported as.trace. z Quantify Total Petroleum Hydrocarbons as as TPH and as diesel. TPHd Analyses shall°be done without silica gel cleanup. s Polynuclear Aromatic Hydrocarbons. REPORTING When reporting the data; the Discharger shall arrange the information in tabularform so:that the date; the constituents, and the.concentrations are readily discernible. 'The data shall be summarized in such a manner as to illustrate clearly the compliance with this Order. As required by the California Business and Professions Code Sections 6735, 7835, and 7835.1, all reports shall be prepared by a registered professional or their subordinate and signed by the registered professional. Th�e�Sischarger° hall'submit.semtamival e ronic'aata reports, wh cf conform to the requirements of the California Code of Regulations, Title 23, Division 3-, Chapter 30. The semi- annual reports shall be submitted electronically over the internet to the Geotracker database system by the 1 st day of the second month following the end of the second and:fourth calendar . quarters (i.e., by 1 February and 1 August), until such time as the Executive Officer determines that the reports are no longer necessary. :_ Semi-annual reports shall be submitted to the Regional Board by the 1 st day of the second month following the end of the second and fourth calendar quarters (i.e., by 1 February,and1 August) until such time as the Executive Officer determines that the reports are,no longer:necessary. a . Each semi-annual report shall include the,.following minimum information: (a) a description and discussion of the groundwater sampling event and results, 'including trends: in the concentrations of pollutants-and groundwater elevations in the wells, how and when. samples were collected, and whether the pollutant,plume(s) is delineated; I i