Saticoy & Wells Community Plan & Development ... - City Of Ventura

Saticoy & Wells Community Plan and Code EIRSection 4.3 Air Qualityon-site. The site superintendent/supervisor shall use his/her discretion in conjunctionwith the APCD in determining when winds are excessive.• Adjacent streets and roads shall be swept at least once per day, preferably at the endof the day, if visible soil material is carried over to adjacent streets and roads.• Personnel involved in grading operations, including contractors and subcontractors,should be advised to wear respiratory protection in accordance with CaliforniaDivision of Occupational Safety and Health regulations.The General Plan FEIR identified mitigation that requires individual construction contractors toimplement the construction mitigation measures included in the most recent version of theVentura County APCD’s Ventura County Air Quality Assessment Guidelines.Compliance with the above mentioned techniques and the individual environmental reviews ofdevelopment projects within the Project Area would help to reduce impacts. Constructionrelated impacts from implementation of the Project are less than significant.Mitigation Measures. Mitigation is not required.Significance after Mitigation. Impacts would be less than significant without mitigation.Impact AQ-4Increased traffic congestion Project Area growth wouldpotentially increase carbon monoxide (CO) concentrations atcongested intersections. However, because of the low ambientCO concentrations and anticipated reduction in emissionsassociated with less polluting vehicles, exceedance of state andfederal CO standards is not expected. Impacts relating to CO“hotspots” are therefore considered Class III, less thansignificant.All of Ventura County is in attainment of state and federal CO standards and has been forseveral years. At the El Rio monitoring station, the maximum 8-hour CO level recorded from2002-2004 is 3.5 parts per million (ppm), less than half of the 9 ppm state and federal 8-hourstandard. Updated CO data (2005-2007) does not exist within Ventura County. As such, theclosest monitoring station (Goleta-Fairview) recorded maximum CO levels from 0.80 to 1.10ppm from 2005-2007. In addition, as shown on Figure 4.3-1, countywide CO emissions areprojected to fall by about 38% by 2020, largely due to the use of cleaner operating vehicles.Although CO is not expected to be a major air quality concern in Ventura County over theplanning horizon, elevated CO levels can occur at or near intersections that experience severetraffic congestion. A project’s localized air quality impact is considered significant if theadditional CO emissions resulting from the project create a “hot spot” where the 1-hour or 8-hour standard is exceeded. This typically occurs at severely congested intersections. TheVentura County APCD's Air Quality Assessment Guidelines indicate that screening for possibleelevated CO levels should be conducted for severely congested intersections experiencing levelof service (LOS) E or F with project traffic where a significant project traffic impact may occur.4.3-13City of Ventura