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I/ MONITORING AND REPORTIPPROGRAM NO.R5-2003-0164 -2- <br /> ATLANTIC RICHFIELD COMPANY <br /> STOCKTON TERMINAL#40T <br /> ENHANCED BIOREMEDIATION PILOT STUDY <br /> SAN JOAQUIN COUNTY <br /> Constituents EPA Method Maximum Quantitation Limit' Frequency <br /> Nitrate(as NOs)and Sulfate 300.0 1 mg/l C <br /> Ammonium as Nitrogen 350 0.5 mg/1 C <br /> General Minerals 2,3 various various C <br /> 1 For nondetectable results. <br /> 2 Baseline samples shall be collected a minimum of two weeks prior to injection. Three sampling events to determine <br /> baseline for AR/MW-lA are required. - <br /> 3 General Minerals include: alkalinity,hardness,total dissolved solids,nitrogen,sodium,phosphate,and phosphorous. <br /> A Every time a well is sampled. <br /> B Monthly while injection is occurring and quarterly after injection has ceased. <br /> C After injection,weekly during the first month of injection,monthly for the first six months after initiation of injection, <br /> and quarterly thereafter. <br /> mg/I Milligrams per liter <br /> µg/1 Micrograms per liter <br /> B. FIELD MEASURED PARAMETERS <br /> Monitoring of the bioremediation pilot study shall include field measured parameters <br /> recorded from downgradient wells AR/MW-lA, AR/MW-3A, AR/MW-5A, AR/MW-5B, <br /> AR/MW-5C, AR/MW-50,AR/MW-8A, AR/MW-10A, AR/MW-11A, and ARMW-12A and <br /> upgradient well PS-P29 every time these wells are sampled. The field measured parameters <br /> to be recorded are listed in the following table. <br /> Constituents Units <br /> Electrical conductivity µmhos/cm <br /> pH pH units <br /> Oxidation-reduction potential millivolts <br /> Dissolved oxygen mg/1 <br /> Temperature °F/°C <br /> Groundwater elevation Feet and hundredths, mean sea level <br /> Field testing instruments (such as those used to test oxidation-reduction potential and dissolved <br /> oxygen) may be used provided that: <br /> 1. The operator is trained in proper use and maintenance of the instruments; <br /> 2. The instruments are field calibrated prior to each monitoring event; <br /> 3. Instruments are serviced and/or calibrated by the manufacturer at the recommended <br /> frequency; and <br /> 4. Field calibration reports are provided with the appropriate monitoring report. <br /> REPORTING <br /> In reporting monitoring data, the Discharger shall arrange the data in tabular form so that the <br /> date, sample type(e.g., influent, effluent, groundwater, etc.), and reported analytical result for <br />