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- t <br /> GARY PETERS 04TERPR I SES <br /> 1i . -7 <br /> ® CA. <br /> 916-738-7198 <br /> Report of Helium test , tank #881-R2U10 site 388. <br /> Test conducted 6-6-89. <br /> The attached field report describes the steps taken to <br /> conduct the test . A total of three bottles of Helium were used. <br /> An air compressor was used to supply air . The mixture of Helium <br /> and compressed air were injected into the tank together , never in <br /> excess of 1 .5 psi . During the addition of the second bottle of <br /> Helium, evidence of leakage was observed. The attached drawing <br /> shows the concentrations encountered. <br /> CONCLUSIONS: The evidence of Helium at the various test sites <br /> shown on the drawing suggests more than one leak . Additional <br /> testing is suggested at the time that the tank is excavated. <br /> GARY PETE <br />