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Section 8 <br />Toxic Air Pollutants - Construction <br />The construction equipment for the Proposed Project would emit Diesel <br />Particulate Matter (DPM), which is a carcinogen. However, the DPM emissions <br />are short-term in nature. Determination of risk from DPM is considered over a 70- <br />year exposure time. Construction emissions are estimated to be generated over <br />the course of 24 months. Since the use of construction equipment would (1 ) be <br />temporary and would not be close to the 70-year timeframe, and (2) would not <br />occur in a single location but be spread out geographically, exposure of sensitive <br />receptors to DPM would not be substantial. Emissions of DPM would not be <br />substantial enough to be considered a significant health risk. <br />General Conformity <br />Regional Construction Emissions General Conformity Analysis <br />The results of the criteria pollutant calculations for the Proposed Project <br />construction activities for each phase are shown in Table 104. These values are <br />compared with the General Conformity de minimis annual thresholds. As shown, <br />in Table 104, all estimated annual emissions would be less than the applicable <br />thresholds. It should be noted that Table 104 conservatively shows all Proposed! <br />Project construction emissions occurring in one year. However, project <br />construction would occur over approximately two years and the annual emissions <br />for a one-year period would be even less. <br />Table 104; Proposed Project Regional Construction Emissions (TonsfYcar) <br />Phase <br />VOC <br />NOX <br />CO <br />PM'10 1 <br />Ill <br />Phase I- Install pipeline <br />0.06 <br />0.70 <br />0.74 <br />OM <br />0,04 <br />Build Shared Structures <br />Improve Heritage Site <br />Phase 2- Well Drilling <br />0,03 <br />0,30 <br />0,24 <br />0,01 <br />001 <br />Phase 3- Well Drilling and <br />0.03 <br />0A2 <br />031 <br />002 <br />002 <br />D9vLIcprn8nt <br />Phase 4- Well Development <br />0.03 <br />0,42 <br />0.311 <br />0.02 <br />002 <br />and Development <br />Phase 5- Well Development <br />0,03 <br />042 <br />0L31 <br />0.02 <br />0,02 <br />Phase 6- Well <br />001 <br />0.12 <br />0.07 <br /><0.005 <br /><0.005 <br />Drilling/Development <br />Phase 7- Monitoring Weld <br />003 <br />032 <br />0.26 <br />0.01 <br />0.01 <br />Drilling, equip and skate park <br />irnprovements <br />6�,:) Mid Basin Centennial Park 16 Project Final Ell B-16 <br />