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0 0 <br /> ATTACHMENT 1: TECHNICAL PROPOSAL 23 May 2014 <br /> excavation bottom and placing the sample in a plastic bag. The sample will be given 10 <br /> minutes of wait time and then the PID will be inserted into the bag to read the VOC <br /> concentration in the head space vapors. If field screen results are above 100 parts per <br /> million by volume (ppmv), another 6" soil will be excavated, and then samples will be <br /> collected and field screened. Once PID field screening yields results below 100 ppmv, <br /> soil confirmation samples will be collected. If field screening results do not yield 100 <br /> ppmv after excavating an additional 6", work will be stopped and the CA ARNG will be <br /> notified. <br /> Costs for these samples have been provided in option 3. Samples will be sent to a CA <br /> certified laboratory for the following analysis on a 24hr TA for: <br /> • TPH-Jet (EPA 8015) and <br /> • SVOCs (EPA 8270). <br /> Additional analyses may be required if total constituent concentrations are high. ECM's <br /> laboratory will extract two samples using the WET method and analyze each for up to <br /> five additional metals, as necessary. <br /> III. ASSUMPTIONS <br /> 1. ECM assumes that site access will be granted and the site will be fully accessible. <br /> 2. ECM assumes that each monitoring and sampling event can be accomplished in one <br /> (1) mobilization over one (1) day. <br /> Page 13 <br />