Item A-MWMC Facilities Plan - Laserfiche WebLink

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2, STUDY AREA CHARACTERISTICS requirements of the Lane Regional Air Pollution Authority (LRAPA), the primary agency working with WPCF Regional Wastewater Program staff on air quality issues. An emissions inventory was conducted in 1997 to identify and describe all possible sources of air emissions found at the WPCF. Calculations based on EPA-approved/reviewed methodologies were performed for the significant emissions sources identified at the WPCF. The results indicate that the WPCF is not a major source of criteria pollutants or hazardous air pollutants (HAPs) (see Section 2.2.8). Given the chlorine and sulfur dioxide storage capacities at the WPCF, the facility is required under federal rule to implement an RMP. The WPCF currently is operating under an RMP and will update this Plan in 2004. Future issues that could prompt compliance-related discussions with LRAPA include: · Public nuisance issues · Dust blowing off site · Emissions from internal combustion engines on site Proactive air quality measures currently are in place at the facility to achieve the following: · Identification of the next project activity that is likely to require an LRAPA permit and activities necessary to meet the permit/construction schedule · Review of the air emission inventory list on file with LRAPA, and identification of any additional emissions tmits or emissions activities that could be updated or expanded · Tracking of emerging regulatory issues Public Health Risk from Air Emissions The WPCF currently is in compliance with federal air quality regulations and with LRAPA guidelines (see Section 2.2.8). Public health risks from WPCF-related air quality issues are low. Seismic Vulnerability A seismic vulnerability evaluation was performed in 1996 to provide a preliminary opinion on major seismic weaknesses and deficiencies at the WPCF. The evaluation indicated that the existing facility is in good repair, with no signs of damage from past wind storms or seismic events. Potential for liquefaction or other permanent ground deformation is low for all structures except the plant outfall. Forty-two seismic deficiencies for individual elements at the plant were discovered, and short-term improvements were recommended for 16 of the 42. Structural improvements were completed in 1998 for the following facilities: · Sludge transfer pump station building · Gas mixing building No. 2 · Pretreatment facility building · Secondary control complex building · Maintenance building · Final treatment complex MWMC 2.0 REV23. DOC 2-15