Laserfiche WebLink
<br />AUAR study area site. The RAP/DRAP addresses hot spots previously identified with contamination <br />exceeding residential standards, any new contamination discovered during the remediation process, <br />remediation conducted on newly discovered sites, and petroleum contamination. The RAP/DRAP does not <br />address Site I, Site K, Building 101, and Building 102 in detail. These sites will be submitted to the MPCA <br />under a separate review process. <br />Previous sampling on the AUAR study area site has revealed elevated levels of the following: <br />Metals (antimony, arsenic, copper, iron, lead, manganese, mercury, thallium and vanadium) <br />Carcinogenic PAHs (expressed as benzo(a)pyrene equivalents) <br />Polychlorinated Biphenyls (PCBs) and <br />Volatile Organic Compounds (VOCs) <br />Petroleum-related contamination related to historical site operations and former storage tanks. <br />All of these soil contaminants will be remediated to comply with MPCA Tier 1 residential standards. <br />Thirty-six hot spots that were previously identified or identified during remediation will be remediated through <br />excavation. According to the approved site response action plan, excavated contaminated soils will be <br />shipped with trucks to an industrial waste facility in Rosemount, Minnesota. Sampling of the excavated area <br />will be used to confirm remediation. If an excavated site soil sample fails to meet the remediation standards, <br />the site will be excavated until samples clear residential standards. Sites that have undergone excavation <br />with be filled with off-site soil. <br />All above-grade and subgrade structures and utilities will be removed. Testing will be conducted in <br />instances where the contractor feels contamination is possible. If contamination is confirmed, the process of <br />excavation and sampling detailed above will be implemented. <br />There is currently a groundwater treatment and recovery system within the AUAR study area as described <br />under Item 11b. The groundwater recovery system will remain as will the groundwater treatment building <br />and 14 extraction wells. To accommodate development, some of the piping will be relocated outside of the <br />AUAR study area, but the piping along the western edge of the site is anticipated to remain in place (see <br />Figure 12-1). In areas of previous VOC contamination, testing or abatement measures for VOC vapors may <br />be required by the City to avoid potential impacts of VOC vapors in new building spaces. <br /> <br />b.P/-D <br />ROJECT RELATED GENERATIONSTORAGE OF SOLID WASTES ESCRIBE SOLID WASTES <br />//.I <br />GENERATEDSTORED DURING CONSTRUCTION ANDOR OPERATION OF THE PROJECT NDICATE METHOD OF <br />.D, <br />DISPOSAL ISCUSS POTENTIAL ENVIRONMENTAL EFFECTS FROM SOLID WASTE HANDLING STORAGE AND <br />.I, <br />DISPOSAL DENTIFY MEASURES TO AVOID MINIMIZE OR MITIGATE ADVERSE EFFECTS FROM THE <br />/. <br />GENERATIONSTORAGE OF SOLID WASTE INCLUDING SOURCE REDUCTION AND RECYCLING <br />AUAR Guidance: For b, generally only the estimated total quantity of municipal solid waste generated and <br />information about any recycling or source separation programs of the RGU need to be included. <br />Construction of the future development would generate construction-related waste materials such as wood, <br />packaging, excess materials, and other wastes, which would be either recycled or disposed in the proper <br />facilities. <br />The proposed development would generate new demands on solid waste management and sanitation <br />blication Municipal Solid Waste in the United <br /> <br /> <br />July 2014 Final AUAR 16 <br />