25C - AGMT - OCWD CENTENNIAL PARK

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Section 5 selected because it is assumed that there would be no sensitive receptors within 50 meters of the well sites during drilling. As shown in Table 6, all estimated emissions would be less than the SCAQMD significance thresholds. Table 6: Proposed Project Localized Construction Emissions Construction Activity Voc Emissions (Pounds/Day) Co PM10 PM2.5 Well Redevelopment 4 NOx Co PM10 Pli Project maximum daily 81 64 7 2 on-site emissions Significant Impact? No No No SCAQMD Scireerrdng 83 753 12 4 Thresholds Exceed Threshold? No No No No NQu= Milrogafloxides CO - carbon monaxide PM,o and Pioz particulate matter NoW,I S I ource of thresholds: South Coasi Air 0iiality Management Dstrii 2009, for SRA 22. 500 meters 1 -afire site Regional Operational Emissions The primary operational activities that would emit criteria pollutants would be the injection well and monitoring well redevelopment activities. Assuming redevelopment of each well every two years, operational emissions were estimated assuming the redevelopment of an average of two and one-half wells per year, that is, two injection wells each year and the monitoring well every other year- The well redevelopment emissions were calculated in CalEEMod as construction emissions because the operation of the proposed project involves the use of construction equipment. As shown in Table 7, all estimated emissions would be less than the applicable SCAQMD CEQA significance thresholds. Table 7: Proposed Project Regional Operational Emissions Phase Voc li Co PM10 PM2.5 Well Redevelopment 4 41 is 1 1 Significance Threshold 55 55 550 150 55 Significant Impact? No No No No No Local Operational Emissions The localized effects from the on-site portion of daily operational emissions for the Proposed Project were evaluated at sensitive receptor locations potentially Mid Basin Centennial Park Ac&n Project Ii EIR 5-24 2