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MONITORING AND REPORTING ARAM NO.5-00-833 • -2- <br /> LEPRINO FOODS COMPANY <br /> SAN JOAQUIN COUNTY <br /> phase petroleum product or visible sheen shall be monitored for product thickness and depth to <br /> groundwater only. Monitoring of product presence in monitoring wells shall occur on a bi-weekly basis. <br /> If product is found in monitoring wells, product removal shall occur until no measurable product remains <br /> in the well. Sample collection and analysis shall follow standard EPA protocol. <br /> Analytical Maximum Sampling <br /> Constituent Method Detection Limit' Frequency <br /> Depth to water ---- ---- Quarterly <br /> Benzene 8020 or 8260 0.5 µg/1 Annually"' <br /> Toluene 8020 or 8260 0.5 µg/1 Annually"' <br /> Ethylbenzene 8020 or 8260 0.5 µg/1 AnnuallyZ'' <br /> Xylenes 8020 or 8260 0.5 µg/1 AnnuallyZ'' <br /> Total Petroleum Hydrocarbons as diesel 8015M 50 µg/1 Quarterly <br /> 'For nondetectable results. <br /> 2 Analyze only in MW-16,MW-17, and MW-18. <br /> 'Annual sampling shall occur during the fust quarter. <br /> RECOVERY SYSTEM MONITORING <br /> Five recovery wells are present at the site. Only two wells (RW-4a and RW-5a) are recovering product at <br /> this time. Leprino shall maintain recovery system data sheets, which shall include the information listed <br /> below. <br /> • Date and time of measurement; <br /> • Rate of the product/groundwater extraction [gallons per minute (gpm)], <br /> • Appearance and/or odor of extracted waters; <br /> • Cumulative groundwater/I-oduct extracted(if measurable); <br /> • Amount of product recovered (if measurable); <br /> • Condition of equipment; <br /> • System operational status, on-line or off-line (if off-line,provide explanation and schedule for <br /> restarting system). <br /> Recovery system data sheets shall be included in quarterly and annual groundwater monitoring reports. <br />