SU0012793 - Laserfiche WebLink

Home Browse Search

shown in the SJVAPCD "Guide for Assessing and Mitigating Air Quality Impacts" (GAMAQI, 1996) as as follows: GAMAQ I Pollutant Table III.G.2 Threshold CO 148 550 ROG 28 '55 NOx 295 55 sox 41 150 PM-10 93* 80 with recommended mitigation of 70 percent on-site reduction While NOx emissions exceed the GAMAQ1 threshold by a wide margin, the FEIR notes that "new" ; a, emissions resulting from the landfill expansion are minimal. Table III.G.2 emissions are a continuation of existing conditions with negligible increases attributable to the proposed action. Since CEQA requires an analysis relative to existing conditions, the lack of any measurable increase from existing conditions is the basis for a finding of a less-than-significant impact. . 3 I i Since FEIR certification, diesel particulate emissions have been added to the list of known carcinogens under California Toxics "Hot Spots" program (AB-1817). This action is new information relative to the project's environmental documentation. Inclusion of diesel exhaust particulates.is based upon their toxicity f for a 70-year lifetime exposure outside one's home for 24 hours per day for 365 days per year. This represents 613,620 hours of continuous exposure. Landfill equipment emits diesel exhaust particulates,as do many of the"packer trucks"disposing refuse. Calculation of any previously undisclosed health risk is not feasible. 3 There is, therefore, a non-zero health risk associated with diesel exhaust particulate matter from on-site heavy equipment and from trucks visiting the site. The magnitude is small and not quantifiable based on existing information. It is not believed to be significant based upon mandatory programs to reduce such emissions to the maximum extent feasible within the next ten years. -4 Noise - Baseline noise levels have not changed substantially since certification of the FEIR. It requires an increase of +3 dB to perceptibly alter the acoustic environment. Because of the logarithmic nature of the decibel scale,this entails a doubling of traffic volumes(FEIR, III.H.1). Trafficvolumes have not doubled since 1994. Noise measurements were made in 1993 during the preparation of the FEIR. Noise measurements were made recently(date not specified,but assumed late 1998)for the proposed BNSF Intermodal Facility DEIR. The measured day-night noise level(Ldn)along Austin Road north and south of the landfill were as follows (d BA Ldn): Al h I li San Joaquin County GP-99-7, ZR-99-6, UP-99-17, ER-99-21City of Stockton Community Development Page 18