ARCHIVED REPORTS_1981 - Laserfiche WebLink

Home Browse Search

Air Quality San Joaquin County has been identified by the California Air Resources Board (CARB) and the Environmental Protection Agency (EPA) as an area with air pollution problems. As a result in June 1974, the CARB identified San Joaquin County to be within an Air Quality Maintenance Area (AQMA). Further, on December 2, 1977, the CARB designated San Joaquin County as a nonattain- ment area of oxidant, total suspended particulates, and carbon monoxide. Both state and federal standards for oxidant/ozone, suspended particu- late matter and carbon monoxide have been violated in the past. For example, the most recent air quality monitoring data from the closest CARB monitoring station, Lodi, has been published in CARB`s "Summary of 1979 Air Quality Data." These data cover the period of January through September 1979. During the .period, the 0.10 parts per million (ppm), one hour average, State standard for oxidant was violated 35 days and the 0.12 ppm, one hour average, federal stan- dard for ozone was violated five days. There were no violations of the 9.0 ppm• federal standard for carbon monoxide in Lodi; however, the Stockton monitoring station recorded two violations. Suspended particulate matter was not monitored in Lodi, but Stockton data show that 13 out of 55 observations violated the 100 microgram per cubic meter (/u-g/m) State standard (24-hour average). No violations of other air pollutants were reported. The CARB and the San Joaquin County Air Pollution Control District have identified that the main reason for violations of the ozone/oxidant standards and carbon monoxide standard in San Joaquin County is due to vehicular emissions within the County and, to some unknown degree, due to emission transported by horizontal wind currents from outside the County. On the other hand, agricultural activities are considered the major courses of suspended particulates violations within the County with a substantial contribution of dust from vehicular road travel. CULTURAL ENVIRONMENT Land Use The site is currently vacant with no on-site improvements other than a fence along the perimeter of the property and along the frontage with Harney Lane. The current use appears to be limited to grazing, and there are no known crops being cultivated on the site. Five residences exist within approximately 1800 feet west of the . west property line of the site, with evidence of row crops and farm animals. Two of these residences are within 200 feet of the site. At least two vine- yards of indeterminate age exist near the site, one immediately to the east and one to the northeast, across Harney Lane. A well exists approximately 1300 feet west of the west property line, at a point approximately 780 feet north of the southwest corner of the site. r