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Richard Larrouy June 3, 1994 <br /> UP 94-8 Page 2 <br /> Specifically, the District suggests that the following Mitigation Measures be included <br /> as part of project approval: <br /> • All material excavated, graded or otherwise disturbed should be sufficiently <br /> watered to prevent excessive amounts of dust. Watering should occur at least <br /> twice daily with complete coverage, preferably in the late morning and after <br /> work is done for the day. <br /> 0 All clearing, grading, earth moving, or excavation activities should cease when <br /> wind speeds are equal to or greater than 20 mph. <br /> • On-site vehicle speed should be limited to 15 mph. <br /> Ozone Precursors-Ozone precursor emissions should be controlled by the following <br /> methods: <br /> • All internal combustion engine driven equipment should be properly maintained <br /> and tuned according to manufacturers specifications. <br /> • Idling of all internal combustion equipment shall be limited to ten minutes at any <br /> given time. <br /> • Use of building materials that do not require the use of paints/solvents. <br /> The applicant should be aware that any equipment (emergency generators and pumps, <br /> etc.) that have the potential to emit air pollutants may be subject to permitting by the <br /> District. If there are any questions regarding operating permits the applicant should <br /> contact the Permit Services section of this office. <br /> Thank you for the opportunity to comment on this project. If you have any questions <br /> or require further information, please call me at 545-7000. <br /> Sincerely, <br /> David J. Stagnaco <br /> Environmental Planner <br /> Northern Region APCD REF x N940215 <br />