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MONITORING AND REPORTINGRAM NO.R5-2003-XXXX • 2 <br /> SPX CORPORATION,MARLEY COC* G TOWER COMPANY <br /> IN SITU GROUNDWATER REMEDIATION PILOT STUDY,SAN JOAQUIN COUNTY <br /> TENTATIVE <br /> Constituents MethodMaximum Sampling Frequency <br /> Detection <br /> Limit' <br /> Hexavalent Chromium —0—A7199 2 µg/1 See attached Tables 1 & 2 <br /> Total Chromium EPA 6020 10µg/1 See attached Tables 1 & 2 <br /> Arsenic EPA 6010 5 µg/1 See attached Tables 1 &2 <br /> Copper EPA 6010 5 µg/1 See attached Tables 1 & 2 <br /> Iron EPA 6010 5 µg-/1 See attached Tables 1 & 2 <br /> Bromide EPA 300.1 1m--g/l- See attached Tables 1 & 2 <br /> Nitrate EPA 300.1 1 mg/1 See attached Tables 1 & 2 <br /> Sulfate EPA 300.1 1 mg/l See attached Tables 1 & 2 <br /> Total Dissolved Solids EPA 160.1 -- See attached Tables 1 & 2 <br /> I If necessary,equivalent analytical methods may be used. The Discharger shall provide written justification. <br /> 2 For non-detectable results <br /> B. FIELD MEASURED PARAMETERS <br /> Monitoring of the pilot study will include field measurement parameters of groundwater samples <br /> collected from MW-206, MW-101, MW-105,MW-104, TW-1, TW-2, TW-3, TW-4, TW-5, and <br /> TW-6 for Phase 1 and groundwater samples collected from MW-107, MW-101,MW-104,MW-105, <br /> MW-8, MW-208,MW-205, MW-204, TW-7, TW-8, and TW-9 for Phase 2. <br /> Field testing instruments (such as those used to test Oxidation Reduction Potential (ORP),pH, and <br /> dissolved 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 calibrated prior to each monitoring event; <br /> 3. Instruments are serviced and/or calibrated by the manufacturer at the recommended frequency; and <br /> 4. Field calibration reports are provided with the appropriate monitoring report. <br /> Constituents Units Type of Sample Sampling Frequency <br /> Ground Water Elevation Feet,Mean Grab Each time well is sampled <br /> Sea Level <br /> (MSL) <br /> Oxygen Reduction Potential Millivolt Grab, In-situ See attached Tables 1 & 2 <br /> ORP <br /> pH pH units Grab See attached Tables 1 &2 <br /> Dissolved Oxygen mg/1 Grab, In-situ See attached Tables 1 & 2 <br />