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CITY OF TRACY, CALIFORNIA <br /> K&L FARM SLUDGE APPLICATION SITE <br /> EPA 503 SLUDGE MONITORING <br /> 1993-94 Metals <br /> Pollutant Limits <br /> Sample Date 3/19/93 3/19/93 7/20/93 9/8/93 6/6/94 <br /> Sample Source Beds Beds Beds Digested Digested Ceiling Monthly <br /> before before before Sludge To Beds Conc. Ave. Limit <br /> applic. applic. applic. Limit (Mg/Kg) <br /> (Mg/Kg) <br /> Metals, Mg/Kg EPA Method <br /> Dry Solids <br /> Arsenic 200.7/3050/6010 <10 <10 6.6 24 <7.69 75 41 <br /> Cadmium 200.7/3050/6010 <2.5 <2.5 3.1 1.1 1.7 85 39 <br /> Chromium 200.7/3050/6010 <2.5 <2.5 56.8 32 42.6 3000 1200 <br /> Copper 200.7/3050/6010 333.3 508.5 522 246.7 398 4300 1500 <br /> Lead 200.7/3050/6010 74.6 110.2 62.8 33.3 49.1 840 300 <br /> Mercury 7471 1.3 0.7 0.71 <1.7 <3.8 57 17 <br /> Molybdenum 200.7/3050/6010 15.9 7.9 12.3 14.4 75 18 <br /> Nickel 200.7/3050/6010 50.8 47.6 43.2 46.7 19.1 420 420 <br /> Selenium 200.7/3050/6010 <15 <15 4.96 <1.7 5.8 100 36 <br /> Zinc 200.7/3050/6010 1396.8 1694.9 1560 333.3 662 7500 2800 <br />