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STORMWATER MANAGEMENT PLAN MORRISON QUARRY <br /> REVISION NO.8 1 August 2022 CERTIFICATION NO.COG500320 <br /> Fugitive dust emissions shall be controlled with the use of a water truck spraying the <br /> haul roads on a daily basis or more if needed. When conditions required, chemical <br /> suppressants shall be used on the facility's yard and haul roads to control fugitive dust <br /> emissions. Invoices shall be kept from these activities in the Stormwater Binder in <br /> Appendix K as a reference log. <br /> Note: The use of chemical suppressants requires the notification and approval from <br /> the Water Quality Control Division (WQCD). <br /> 3.1.8 HAUL ROADS <br /> Material is loaded into haul trucks in the active mining area (see section 3.1 .7). These <br /> haul trucks use the haul roads to move the material. The potential pollutants <br /> associated with haul roads include sediment from the haul roads in the active mine <br /> areas. <br /> There is moderate potential for pollutants to enter stormwater since some erosion <br /> occurs along the sides of haul roads. However, the site constructs check dams as <br /> necessary to reduce erosion from haul roads and active mining areas. Additionally, <br /> most stormwater is directed to the retention basin before being discharge offsite. <br /> 3.1.9 ONSITE WASTE STORAGE <br /> Waste for the facility is placed in dumpsters located throughout the site. These <br /> containers are emptied on a routine basis. There is minimal potential for pollution to <br /> contaminate stormwater from these containers. Any waste produced from shop <br /> maintenance is contained within the shop until a vendor can pick up the waste.There <br /> is low potential for onsite waste storage to impact stormwater. <br /> 3.1.10 ROOF AREAS <br /> There is minimal potential for pollutants associated with galvanized materials (gutters, <br /> downspouts, ducts, and heating/air conditioning equipment) to be mobilized by <br /> stormwater. <br /> 3.1.11 ILLICIT PLUMPING <br /> The preparer of the SWMP and the facility are not aware of any illicit plumbing <br /> connections to stormwater conveyance. <br /> 3.2 SIGNIFICANT SPILLS AND/OR LEAKS <br /> The preparer of the SWMP and the facility are not aware of any significant spills or leaks <br /> within the past three years. <br /> 16 <br />