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�1_ -I/ San Joaquin Valley Air Pollution Control District June 13, 2006 Reference No. C200601139 RECIEVED Mo Hatef JUN 1 4 2006 San Joaquin County Community Development Dept. Community Development Dept, 1810 East Hazelton Avenue Stockton, CA 95205 Subject: PA-0600268 (SA); Delta Building Design; 13392 E. Lockeford Ranch Dr.; (APN 051-310-41) Dear Mo Hatef: The San Joaquin Valley Unified Air Pollution Control District (District) has reviewed the project referenced above and offers the following comments: The entire San Joaquin Valley Air Basin is designated non-attainment for ozone and particulate matter (PM10 and PM2.5). This project would contribute to the overall decline in air quality due to construction activities in preparation of the site, and ongoing traffic and other operational emissions. Based on the size of the project, the District expects that the project would not exceed the District's thresholds of significance for ozone precursors of 10 tons per year of reactive organic gases (ROG)and oxides of nitrogen (NOx). It appears that this project will be subject to the District's Indirect Source Review Rule (Rule 9510). This rule was adopted to reduce the impacts of growth in emissions from all new development in the San Joaquin Valley. Rule 9510 requires applicants subject to the rule to provide information that enables the District to quantify construction, area and operational PM10 and NOx emissions, and potentially mitigate a portion of those emissions. Preliminary analysis, based on the trip generation information included with the application and the size of the construction site, indicates that this project may generate emissions in excess of the Rule's 2.0 tons per year baseline for ROG and NOx that would require emissions to be reduced. An application must be filed with the District no later than concurrent with application with a local agency for the final discretionary approval. For more information and instruction, please contact the District's ISR staff by phone at(559) 230-5800 or by email at ISRna vallevair.org. Regulation VIII (Fugitive PM10 Prohibitions) Rules 8011-8081 are designed to reduce PM10 emissions (predominantly dust/dirt) generated by human activity, including construction and demolition activities, road construction, bulk materials storage, paved and unpaved roads, carryout and trackout, landfill operations, etc. The District's compliance assistance bulletin for construction sites can be found at http://www.vallevair.org/busind/com i)ly/PM 10/Req%20V I I I°/`20CAB.pdf. If a non-residential site is 1.0 to less than 5.0 acres, an owner/operator must provide written notification to the District at least 48 hours prior to his/her intent to begin any earthmoving activities as specified in Section 6.4.2 of Rule 8021. A template of the District's Construction Notification Form is available at http'//www vallevair orn/busind/comply/PM10/forms/Notification%2OForm%2OFinal%2012 01 2005 doc. Rule 4102 (Nuisance) This rule applies to any source operation that emits or may emit air contaminants or other materials. In the event that the project or construction of the project creates a public nuisance, it could be in violation and be subject to District enforcement action. Northern Region Office Central Region Office Southern Region Office 46110 Enterprise Way 1990 East Gettysburg Avenue 2700 M Street,Suite 275 Modesto,CA 95356-871 it Fresno,CA 93726-0244 Bakersfield,CA 93301-2373 (209)557-6400 • FAX (209)557-6475 659) 230-6000 • FAX(559) 230-6061 (661) 326-6901) • FAX(6611 326-6965 vv w.valleyaicorg