Laserfiche WebLink
BSKANALYTICAL <br /> LABORATORIES <br /> April 10, 2003 <br /> Ery Rifenburg <br /> Foothill Engineering <br /> 12793 Paddy Creek Lane <br /> Lodi, CA 95240 <br /> Dear Mr Rifenburg <br /> Two of the soil samples you submitted to BSK Analytical Laboratories <br /> (Submission Number 2003031257) were analyzed for fuel oxygenates one day past the <br /> holding time of 14 days (Order numbers 304058 and 304059) Holding times for analysis <br /> have been established by regulators and the EPA as a means for an analytical result to <br /> reflect the condition of the sample at the time it was sampled For volatile organic <br /> constituents, the typical route for degradation of the analytes is through bacterial <br /> breakdown and loss by volatilization These routes are why samples are kept cold from <br /> the time of sampling,to slow and minimize these effects While a 14 day holding time <br /> has been determined to be the optimum amount of time to allow for sample storage, one <br /> extra day would not actually significantly change the analytical results of a sample that <br /> has been stored chilled <br /> Because regulators have set holding times, they must view results not performed <br /> within them as invalid, even though the chemistry of the sample does not dictate that <br /> viewpoint It is the policy of BSK Analytical Laboratories to always make every effort to <br /> achieve analysis within holding times, so regulators will accept the data We regret any <br /> inconvenience this matter has caused,but trust this letter will help in your evaluation of <br /> the test results <br /> If you have any further questions regarding this matter,please do not hesitate to <br /> contact me at(559)497-2888, extension 128, or your Client Services Representative, <br /> Miyuki Ful ita <br /> Sincerely, <br /> Koelewyn <br /> Laboratory Director <br /> 1414 Stanislaus Street • Fresno,CA 93706-1623 o Phone 559-497-2888, In CA 800-877-8310 • Fax 559-485-6935 <br />