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PROVEN TECHNOLOGIES AND REMEDIES GUIDANCE-REMEDIATION OF METALS IN SOIL • location of underground utilities; • health and safety; • waste management; • schedule for staff and equipment resources; • coordination with laboratory for analysis and assessment; • coordination with off-site disposal facility; and • notifications. Local jurisdictions, such as municipal public works departments and air districts, often require excavation or grading permits. In addition, depending on the amount of soil to be excavated or disturbed, the RWQCB may specify waste discharge requirements, preparation of a SWPPP, and/or an NPDES permit. The key elements of the permit application specific to the location of the excavation should be identified. Some municipalities have restrictions on the type of equipment that can be used within a specified distance from water mains, sewer lines, and utility lines. In addition, air districts may require a similar application that identifies the mitigation measures to reduce or eliminate air dispersal of contaminants. 7.3.1 Dust Control and Air Monitoring The design should reiterate the actions (specified in the remedy selection document) that will be implemented to control fugitive dust and emissions during implementation of the remedy. Dust control is required during construction, demolition, excavation, and other earthmoving activities, including, but not limited to, land clearing, grubbing, scraping, travel on site, and travel on access roads to and from the site. Most air districts have recommended or required dust mitigation measures and/or engineering controls. Applicable air pollution regulations, performance criteria and acceptable control strategies should be cited and described. The following items are generally considered: • Wind breaks and barriers, or ceasing work when wind speeds are above a certain level; • Frequent water applications; • Application of soil additives; • Control of vehicle access; • Vehicle speed restrictions; • Covering of piles; • Use of gravel and rumble strips at site exit points to remove caked-on dirt from tires and tracks; 31