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feet in depth. <br />These excavations are currently collecting product and water from the <br />surrounding soils. Periodically IT removes product from these excavations <br />and stores the material in a tanker truck for subsequent disposal. <br />4.4 Air Sampling <br />In response to reports of eye irritation and breathing problems by a <br />number of nearby residents an air sampling program was implemented on <br />Monday, March 3, 1986. The sampling was conducted by IT with guidance from <br />The MARK Group. Samples were taken at five locations at three different <br />times of the day (morning, early afternoon, evening) for two consecutive <br />days. Three of the sampling locations were at the landfill and two at the <br />Whiskey Slough Marina. <br />Samples were collected for 2 hours. During this period a measured <br />volume of air was drawn over activated charcoal to extract volatile organic <br />materials. The samples have been submitted to a certified analytical <br />laboratory for determination of benzene, toluene, and xylene (BTX). Normal <br />turnaround on analyses is two weeks, however, two of the analyses have been <br />expedited (24 hour turnaround) to allow an assessment of future air <br />sampling requirements. <br />During the air sampling periods spot checks of hydrocarbon levels were <br />taken using an HnU photo-ionization detector. Readings taken by IT at the <br />landfill site generally ranged from 5 to 30 ppm with one isolated 50 ppm <br />reading. It should be noted that HnU meter accuracy is only an order of <br />magnitude. <br />4.5 Surface Water Sampling <br />Samples of surface waters have been collected from Whiskey and <br />-7-