FIELD DOCUMENTS AND WORK PLANS 2004-2014

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Appendix C:Initial Study Checklist Former Marley Cooling Tower Company,Stockton,CA Currently,the Valley is federally classified as extreme non-attainment for the federal 1-hr ground-level ozone, serious non- attainment for the federal 8-hr ground-level ozone, serious non-attainment for particulate matter less than 10 microns in diameter(PM10) standard, and non-attainment for particulate matter less than 2.5 microns in diameter(PM2.5)standard. Additionally, the Valley is classified as severe non-attainment for the California ozone standard and non-attainment for the state's PIM 10 standard. The California Air Resources Board redesignated the Fresno urbanized area to attainment for carbon monoxide on September 24, 1998. The re-designation became final upon action by the California Office of Administrative Law on August 26, 1999. All other areas in the Valley are attainment for carbon monoxide. The Valley is designated as attainment for all other criteria pollutants. Analysis as to whether or not project activities would: a. Conflict with or obstruct implementation of the applicable air quality plan. impact Analysis: On December 6, 2006, Mr. Leland Villalvaco of the San Joaquin Valley Air Pollution Control District stated that for projects where emissions will not exceed 10 tons per year, a detailed air impact analysis is not necessary, Project activities are not expected to exceed 10 tons per year. Limited excavation activities are proposed for the horizontal well installations due to the nature of the installation process (horizontal boring technique); therefore, minimal impact to air quality will occur. No conflict or obstruction of air quality plans will occur by the work performed at the site. Equipment used at the site during the proposed RAP activities will consist of(2) drill rigs, (2) fork lifts, (2) tanker trucks, and miscellaneous support vehicles. All site equipment will be operated periodically throughout a typical work day and idling will be minimal. Air contaminants from the operation of equipment are not expected to cause injury, nuipance or annoyance to any considerable number of persons or to the public. Equipment will be operated in accordance with applicable federal, state and local requirements. Conclusion: ❑ Potentially Significant Impact ❑ Potentially Significant Unless Mitigated ® Less Than Significant Impact ❑ No Impact b. Violate any air quality standard or contribute substantially to an existing or projected air quality violation. Impact Analysis: Equipment will be operated in accordance with applicable federal, state and local requirements. All equipment meets current California State emissions requirements, and therefore will not significantly impact air quality standards. Conclusion: ❑ Potentially Significant Impact ❑ Potentially Significant Unless Mitigated ® Less Than Significant Impact ❑ No Impact c. Result in cumulatively considerable net increase of any criteria pollutant for which the project region is non-attainment under an applicable federal or state ambient air quality standard (including releasing emissions which exceed quantitative thresholds for ozone precursors). Impact Analysis: During injection treatment, various trucks and drill rigs will be utilized for a substantial, although temporary, amount of time. All equipment meets current California State emissions requirements, and therefore will not significantly impact air quality standards. Dust abatement procedures will consist of wetting down the work areas that have the potential to become dusty during work hours when applicable (e.g., school athletic field area) Conclusion: ❑ Potentially Significant Impact ❑ Potentially Significant Unless Mitigated ® Less Than Significant Impact ❑ No Impact Page 7 of 25