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MEDICAL OFFICE BUILDING <br />ENVIRONMENTAL REVIEW NO. 2006-142 <br />Compliance <br />MITIGATION MEASURE AGENCY APPROVAL <br />Prior to issuance of Gradin Permit and durin cons truction <br />MM AQ-1 As required by South Coast Air Quality Management District Public Works <br />(SCAQMD) Rule 403-Fugitive Dust, all construction <br />activities that are capable of generating fugitive dust are <br />required to implement dust control measures during each <br />phase of project development to reduce the amount of <br />particulate matter entrained in the ambient air. These <br />measures include the following: <br />^ Application of soil stabilizers to inactive construction <br />areas <br />^ Quick replacement of ground cover in disturbed areas <br />^ Watering of exposed surfaces three times daily <br />^ Covering all stock piles with tarp <br />^ Sweep streets adjacent to the project site at the end <br />of the day if visible soil material is carried over to <br />adjacent roads <br />^ Cover or have water applied to the exposed sun`ace of <br />all trucks hauling dirt, sand, soil, or other loose <br />materials prior to leaving the site to prevent dust from <br />impacting the surrounding areas <br />^ Install wheel washers where vehicles enter and exit <br />unpaved roads onto paved roads to wash off trucks <br />and any equipment leaving the site each trip. <br />MM AQ-2 All clearing and earthwork activities shall cease during period Public Works <br />of high winds (winds greater than 25 mph averaged over one <br />hour) or during Stage 1 or Stage 2 smog episodes. <br />MM AQ-3 During grading, the construction disturbance area shall be Public Works <br />kept as small as possible. <br />MM AQ-4 Prior to issuance of any grading permit wind barriers shall be Public Works <br />installed along the perimeter of the site and/or around areas <br />being graded. <br />MM AQ-5 During construction, operators of any gas or diesel fueled Public Works <br />equipment, including vehicles, shall be encouraged to turn off <br />equipment if not in use or left idle for more than five minutes. <br />Equipment engines shall be maintained in good condition and <br />in proper tune according to manufacturer's specifications. <br />MM CR-1 In the event that archaeological/paleontological resources are Planning <br />unearthed during project subsurface activities, all earth- Division <br />disturbing work within a 100-meter radius shall be temporarily <br />suspended or redirected until an Orange County certified <br />archeolo ist has been rovided the o ortunit to assess the <br />Mitigation Monitoring <br />75A-59 <br />