DUST MANAGEMENT PLAN MILLER PAVING LIMITED BRAESIDE QUARRY. Prepared by: Church & Trought Inc. 885 Don Mills Road, Suite 106 Toronto Ontario M3C 1V9

Transcription

1 DUST MANAGEMENT PLAN MILLER PAVING LIMITED BRAESIDE QUARRY Prepared by: Church & Trought Inc. 885 Don Mills Road, Suite 106 Toronto Ontario M3C 1V9 June, 2009

2 TABLE OF CONTENTS 1. INTRODUCTION EMISSION SOURCES RECOMMENDED CONTROL MEASURES Aggregate Crushing and Screening Unpaved Roads Paved Roads Truck Loading Wind Erosion of Stockpiles and Exposed IMPLEMENTATION SCHEDULE IMPLEMENTATION PLAN INSPECTION AND MAINTENANCE MONITORING AND RECORD KEEPING RESPONSE TO COMPLAINTS CONCLUSION... 5

3 1 1. INTRODUCTION A Dust Management Plan (DMP) for dust is a detailed document that outlines the fugitive dust sources at a given site and describes the measures that shall be used to control emissions from these sources. The DMP is used to manage fugitive dust emissions at facilities such as the Braeside Quarry, from sources such as on-site haul routes, material processing, material handling, and wind erosion. This DMP for the Braeside Quarry includes the following items: A description of the emission sources from the facility; Details regarding the size and composition of the dust; A summary of control measures that are or shall be put in place as part of the DMP; An implementation schedule for the control measures; An implementation plan for the control measures; Details regarding the inspection and maintenance schedule; and, A description of the planned monitoring and record keeping activities. 2. EMISSION SOURCES Operations within the quarry shall consist of the following: Site preparation (overburden removal, berm construction, rehabilitation) Aggregate Extraction (front-end loader loads at the extraction face, transferring material directly to the processing plant, with loading of quarry trucks during some periods of operation). Aggregate Processing (screening and/or crushing of aggregate at the processing plant) Shipping (front-end loader loads highway trucks for shipment of aggregate off site) The primary potential sources of dust emissions are therefore: Aggregate crushing and screening; Unpaved roads within the pit; Paved roads near the pit entrance; Truck loading; and, Wind erosion of stockpiles and exposed faces Details regarding these key dust sources at the Braeside Quarry are discussed further in the following sections.

4 2 3. RECOMMENDED CONTROL MEASURES 3.1 Aggregate Crushing and Screening The processing plant shall be equipped with a water spray system capable of supplying up to 1000 litres / hour of water. The actual water application rate shall vary, being adjusted as needed to reduce visible dust emission. Water for the spray system comes from the dewatering pond and will be stored in a minimum 27,000 litre tanker. The spraybars will be triggered whenever the site manager or scale operator observes visible dust emissions from the processing equipment. 3.2 Unpaved Roads A water truck and water supply shall be available to cover the unpaved internal haul routes. The truck shall be equipped with a spray bar to deliver the water evenly over the haul route surface. Water supply shall be available to allow the tanker truck to fill and apply the full payload of water each hour, if necessary during dry conditions. The actual watering rate shall vary, depending on surface moisture conditions and traffic conditions, and shall be triggered whenever the site manager or scale operator observes trucks producing a trailing cloud of dust greater than about 1/3 of a trailer length. Haul routes shall be maintained during May to October, to ensure that loose fine material on the haul route surface is minimized. 3.3 Paved Roads The section of the internal haul route, extending from the public road to the scales on the site, shall be paved. The facility shall have the capability to spray water or use an alternate dust suppressant on-site paved surfaces, as well as Usborne Street near the quarry entrance as needed. The actual rate of flushing shall vary, depending on surface moisture conditions and traffic levels, and shall be triggered whenever the scale operator or site manager observes trailers producing a trailing cloud of dust greater than about 1/3 of a trailer length. A water truck and water supply shall be available to cover the unpaved internal haul routes. The truck shall be equipped with a spray bar to deliver the water evenly over the haul route surface. Water supply shall be available to allow the tanker truck to fill and apply the full payload of water each hour, if necessary during dry conditions. The actual watering rate shall vary, depending on surface moisture conditions and traffic conditions, and shall be triggered whenever the site manager or scale operator observes trucks producing a trailing cloud of dust greater than about 1/3 of a truck length. Haul routes shall be maintained during May to October, to ensure that loose fine material on the haul route surface is minimized.

5 3 3.4 Truck Loading Truck loading will be suspended if the site manager or scale operator observes the material to be dry and dusty and the wind is directed toward a residence at a speed greater than 30 km/h or otherwise sufficient to cause wide-spread visible emissions. 3.5 Wind Erosion of Stockpiles and Exposed Faces Extraction shall be suspended if the condition of the quarry face is dry and dusty and the wind is directed toward a residence at a speed greater than 30 km/h or otherwise sufficient to cause wide-spread visible erosion of the open face. Wind forecasts shall be monitored regularly during this phase of the operation to anticipate the need for these measures and allow for next day planning. 4. IMPLEMENTATION SCHEDULE All control measures are to be in place prior to extraction in the expanded extraction area. 5. IMPLEMENTATION PLAN The following outlines how the plan shall be implemented, including training of facility personnel: The DMP Plan shall be kept on file at scale house. Formal training on new and existing operating procedures shall be provided to relevant new and existing staff; Training shall be provided to relevant new staff and refresher training shall be provided at a minimum of once every 3 years; The company s management shall communicate the DMP to responsible supervisors, who shall ensure staff are following operating procedures defined in the DMP; The Site Manager shall be responsible for ensuring the DMP is followed; Management shall ensure plan is reviewed annually; The staff shall follow the DMP procedures. 6. INSPECTION AND MAINTENANCE The following outlines the details regarding the inspection and maintenance procedures that shall be employed at the site: The water spray system for the processing plant should be inspected when in use; Haul routes are maintained on a regular basis as previously indicated;

6 4 7. MONITORING AND RECORD KEEPING Visual inspection for dusty conditions in areas identified in the DMP shall occur at a minimum of twice daily during dry weather and once per day otherwise. Records shall be made each time the following events occur: Water truck arrives and applies water to unpaved haul routes; Water applied to unpaved haul routes; Unpaved haul routes are maintained; Water sprays are used at the processing plant; Wet or vacuum-sweeper arrives and cleans paved surfaces; Visible dust is observed; and, A complaint is received. Records will be kept in a log. 8. RESPONSE TO COMPLAINTS Signs shall be placed outside the Braeside Quarry providing a phone number for neighbours to call if they have any dust concerns. Miller Paving will request that the local MOE office and the Township of McNab/Braeside notify them immediately if they receive a complaint, to allow for prompt company response and follow-up. Complainants are requested to identify the location of the incident as well as the time of day that it was detected and any other information that they feel is relevant. All dust complaints shall be forwarded to the Site Manager. This individual shall then ensure the following steps: Conduct a site survey to identify sources of visible dust contributing to the complaint Create a record of this survey Determine weather conditions (both current and at the time that the complaint was made) and report on all on-site activities at the time the complaint was made. If the information collected from the first two response procedures indicates that Miller Braeside Quarry is not the source of the dust complaint, the complainant shall be notified of this finding. Documentation supporting this response mechanism (site survey record and wind station readings at the time of the complaint) shall be provided to the complainant upon request. The Site Manager or other Miller staff shall respond to all complaints within 24 hours (phone call to complainant).

7 5 If it is determined that the complaint was in fact related to Miller Braeside Quarry s activities, the following response procedures shall be followed, in the order provided below: 1. Level 1 - Inspection and correction of operations within quarry. The Site Manager shall ensure that all elements of the Dust Management Plan are being followed. Control measures shall be stepped up or operations may be curtailed, as required. 2. Level 2 Review of Dust Management Plan. If the Level 1 response does not adequately resolve the source of the dust complaint, the Dust Management Plan shall be reviewed to look for additional control measures to address the source of the dust complaint. 3. Level 3 Operational modifications. If the Level 2 response does not adequately resolve the source of the dust complaint, Miller Braeside Quarry shall commit to making physical changes to the facility address the source of the dust complaint, such as additional enclosures, relocation of equipment, or additional paving. 9. CONCLUSION Miller Paving Limited considers the dust control measures of this Dust Management Plan to either meet or exceed industry standards for controlling dust at quarry operations. Miller Paving Limited will implement these measures to successfully control dust emissions at the Miller Braeside Quarry.