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EMCON/OWT Inc. <br /> GROUND WATER SAMPLING AND ANALYSIS REQUEST FORM <br /> PROJECT NAME : North County Landfill <br /> ANTICIPATED DATE: October 10,11,2005 <br /> SPECIAL INSTRUCTIONS/CONSIDERATIONS : Authorization: JC Isham <br /> 4th Quarter 2005 Monitoring Event. Sacto_Dir Ph: _ 916-5654316 <br /> Surface Water Points Concord Dir: 925-288-2381 <br /> Project No.: 791288/00004 <br /> Sample if flowine water is present. <br /> Check S-4(downstream)FIRST. IF no flow at S-4,do NOT sample <br /> S-1 &S-2. Needs to be flowing off the site. <br /> Pick-up site keys from scale house(#NC 1 and 0464). Well Lock <br /> Lock#2246 is on gate to wetlands(for S4). Number(s) <br /> 0464 <br /> 1st storm samples were last collected on 1/10/05,Incl 5-YR Constituents. NC1(site) <br /> Surface water monitoring is first storm and quarterly thereafter. 2246(site) <br /> Site Contact: <br /> Well Number Casing Casing Depth to <br /> or Source Diameter Length Water ANALYSES REQUESTED <br /> (inches) (feet) (feet) <br /> 7/21/2005 <br /> S-1 NA NA Not sampled Total Suspended Solids <br /> (upstream) Total Dissolved Solids <br /> S-2 NA NA Not sampled Chloride <br /> (downstream) Carb/Bicarb <br /> S-4 NA NA Not sampled Nitrate- Nitrogen(48-hr hold time) <br /> (downstream) Sulfate <br /> Metals: Ca,Mg,X,Na(NOT Filtered) <br /> SHIP SAMPLES TO THE LAB THE SAME Volatile Organic Compounds by 8260B <br /> DAY THEY ARE COLLECTED IF <br /> POSSIBLE. Field Measurements: <br /> pH,EC,Temp,Turbidity <br /> Laboratory and Lab QC Instructions: <br /> Columbia Analytical Please report MDL's,PQL's,and trace. <br /> 6925 Conaga Avenue <br /> Canoga Park,Calif 91303-3102 <br /> Lab Contact: Karen Ryan <br /> 818-587-5550 Ship samples via Fed X Acct#1435-1381-5 <br /> 117x.818-587-5555 <br /> Page 4 of 4 <br />