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Cal EEMod separates the operational trip purposes into three categories: primary, diverted, and pass -by <br />trips. According to Appendix A of the CaIEEMod User's Guide, the primary trips utilize the complete trip <br />lengths associated with each trip type category. Diverted trips are assumed to take a slightly different <br />path than a primary trip and are assumed to he 2S%of the primary trip tengths. Pass -fay trips are <br />assumed to be 0.1 miles in length and area result of no diversion from the primary route.' Review of the <br />Project's Cal EEMod output files demonstrates that all of the trips were assumed to be primary, with <br />pass -by and diverted trips artificially reduced to zero (see excerpt below) )Appendix B, pp. 446, 504, 562, <br />620). <br />InVEMCkSPf <br />............W...Y.m.'.� i94 111 <br />........... ....-....-.-... <br />... <br />............ <br />o.W <br />__________ K�F ----------- sw -- ______' ___am ________- <br />As you can see in the excerpt above, the diverted and pass -by trips were manually reduced to zero, <br />while the primary trips wereincreased to 100 percent in the model. As previously stated, the CaIEEMod <br />User's Guide requires that any non -default values inputted into the model must be justified.' According <br />to the "User Entered Comments & Non -Default Data" table, the justification provided for these changes <br />is: "Trip Rates based on information provided in the Trip Generation" (Appendix B, pp. 401, 459, 517, <br />57S). However, the trip generation indicated in the DEIR €ails to substantiate the reduction of pass -by or <br />diverted trips in the existing model. Thus, the model overestimates the existing land use's mobile- <br />miated operational emissions and should not he relied upon to determine Project significance. <br />Failure to Implenient All Feasible Mitigation to Reduuc Emissions <br />The DEIR determines that the ProjecCs operational VOC emissions would exceed the applicable <br />SCAQMD threshold (see excerpt below) (p. 5.2-17, Table 5.2-8). <br />"CalEEMod. User's Guide, Appendix A: Calculation Details for CalEEMod."SCAQMO, avoilabfe at: <br />httn //vnvw anmrl errvlhnrs/r♦afaiilf-SourceJralaemM/ralrvPmnrl-anr�rnrliva. nAfNf ..m-l_ p. 70 <br />' Supra, fn 1, p. 7, 13. <br />33 <br />as <br />75C-174 <br />