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Is Data Valid?(circle) Preservation Temperature <br /> `/ YESv <br /> Stanter <br /> Stantec Lab Validation Form-Soil and Water <br /> Matrix <br /> Project/Client: Tidewater Stockton <br /> Project No.: 211602384.600.94041 <br /> Lab Work Order No.: Kiff#85467 <br /> Date of Validation: 10/17/13 <br /> Date of Analysis: 07/19/13 through 07/24/13 <br /> Date of Sampling: 07/16/13 through 07/18/13 <br /> Completed By: Tony Giglini <br /> Circle/Highlight <br /> Yes or No <br /> Signature: <br /> 1. Was the analysis the one requested? es No <br /> 2. Do the sample number(s)on the chain-of-custody(COC) match the one(s)that es No <br /> appear on the laboratory data sheet? <br /> 3. Were samples prepared (extracted,filtered, etc.)within EPA holding times? Yes No <br /> 4. Once prepared/extracted,were the samples analyzed within the EPA holding times? es No <br /> 5. Were Laboratory blanks performed, if so,were they below non-detect? Yes No <br /> 6. Are the units correct?(i.e., soil samples in mg/kg or pg/g,water samples mg/L, Ng/L, Yes No <br /> and air samples in volume mg/m^3,etc.) <br /> 7. Were appropriate Matrix Spike (MS) and Matrix Spike Duplicate (MSD) samples es No <br /> included in the laboratory batch sample? <br /> 8. In lieu of MS/MSD,were surrogate spike (SS)/surrogate spike duplicate(SSD), or es No <br /> laboratory control spike (LCS)/laboratory control spike duplicate (LCSD) samples <br /> included in the laboratory batch samples? <br /> 9. Were MS/MSD(or SS/SSD)within the acceptable range of%recovery(i.e., approx yes No <br /> 80-120%depending on analyte)? <br /> 10.Were MS/MSD (or SS/SSD)values used to calculate Relative Percent Difference Yes No <br /> (RPD)? <br /> Yes No <br /> 11.Were Relative Percent Difference values within the acceptable range (i.e. ±25%)? <br /> If any answer is no, explain why and what corrective action was taken: <br />