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r <br />OU <br />Mingatzon M'easurea: <br />Mater Del High School <br />Panning Structure and School Expansion Project <br />AQ -1 Prior to issuance of any Grading Permit, the City Engineer and the Building Safety <br />Manager shall confirm that the Grading Plan, Building Plans, and specifications <br />stipulate that, in compliance with SCAQIVID Role 403, excessive fugitive dust <br />emissions shall be controlled by regular watering or other dust prevention measures, <br />as specified in the SCAQMD's Rules and Regulations. In addition, SCAQMD Rule <br />402 requires implementation of dust suppression techniques to prevent fugitive dust <br />from creating a nuisance off -site. Implementation of the following measures would <br />reduce short -term fugitive dust impacts on nearby sensitive receptors: <br />a All active portions of the construction site shall be watered every three hours <br />during daily construction activities and when dust is observed migrating from the <br />project site to prevent excessive amounts of dust. <br />Pave or apply water every three hours during daily construction activities or <br />apply non -toxic soli stabilizers on all unpaved access roads, parking areas, and <br />staging areas. More frequent watering shall occur if dust is observed migrating <br />from the site during site disturbance. <br />Any on -site stockpiles of debris, dut, or other dusty material shall be enclosed, <br />covered, or watered twice daily, or non -toxic soil binders shall be applied. <br />All grading and excavation operations shall be suspended when wind speeds <br />exceed 25 miles per hour. <br />• Disturbed areas shall be replaced with ground cover or paved immediately after <br />construction is completed in the affected area. <br />• Track -out devices such as gravel bed track -out aprons (3 inches deep, 25 feet <br />long, 12 feet wide per lane and edged by rock berm or row of stakes) shall be <br />installed to reduce mud /ditt trackout from unpaved truck exit routes. <br />Alternatively a wheel washer shall be used at truck exit routes. <br />O On -site vehicle speed shall be limited to 15 miles per hour. <br />All material transported off. -site shall be either: sufficiently watered or securely <br />covered to prevent excessive amounts of dust prior to departing the job site. <br />o Reroute construction trucks away from congested streets or sensitive receptor <br />areas. <br />AQ -2 All trucks that are to haul excavated or graded material on -site shall comply with <br />State Vehicle Code Section 23114 (Spilling Loads on Hgohymye), with special attention <br />to Sections 23114(b)(F), (e)(4) as amended, regarding the prevention of such material <br />spilling onto public streets and roads. Prior to the issuance of grading permits, the <br />Statement of Facts and Findings 21 June 2015 <br />