['ae', '—', 'FDO', 'MAH', 'UN', 'PWN', '--', 'DO', 'NOT', 'CITE', 'OR', 'QUOTE', '-', '12/19/97', 'f£:\\user\\redson\\ihecsrd4.wp6', '-', ';', ';', '_', '_', 'Once', 'a', 'ranking', 'is', 'completed,', 'the', 'underlying', 'data', 'for', 'the', 'highest', 'ranked', 'product/material', 'categories', 'will', 'be', 'evaluated', 'by', 'a', 'panel', 'of', 'EPA', 'managers', 'and', 'staff', 'prior', 'to', 'selecting', 'the', 'top', 'candidates', 'for', 'further', 'analysis', 'review', 'and', 'data', 'development.', 'The', 'information', 'generated', 'by', 'this', '-', 'review', 'and', 'data', 'development', 'will', 'assist', 'in', 'risk', 'assessment', 'and', 'risk', 'management', 'activities.', 'A', 'methodology', 'for', 'determining', 'hazard', 'scores', 'for', 'individual', 'chemicals', '(i.e.,', 'high,', 'medium,', 'and', 'low)', 'was', 'developed', 'by', 'the', 'U.S.', 'EPA', 'for', 'the', 'Use', 'Cluster', 'Scoring', 'System.', 'This', 'hazard', 'ranking', 'system', 'was', 'evaluated', 'by', 'the', 'SAB’s', 'Environmental', 'Engineering', 'Committee', '(SAB,', '1995).', 'This', 'ranking', 'system', 'is', 'used', 'in', 'the', 'SRD', 'with', 'the', 'addition', 'of', 'a', 'scoring', 'element', 'for', 'acute', 'effects.', 'Since', 'the', 'hazard-scoring', 'component', 'of', 'the', 'SRD', 'is', 'almost', 'identical', 'to', 'that', 'of', 'the', 'previously', 'reviewed', 'Use', 'Cluster', 'Scoring', 'System,', 'the', 'EPA', 'did', 'not', 'requesting', 'that', 'the', 'IHEC', 'review', 'the', 'underlying', 'data', 'and', 'criteria', 'for', 'the', 'SRD’s', 'hazard', 'scores', 'in', 'its', 'review', 'of', 'the', 'SRD.', 'However,', 'the', 'Agency', 'did', 'request', 'IHEC', 'to', 'comment', 'on', 'how', 'the', 'SRD', 'integrates', 'the', 'hazard', 'scores', 'with', 'predicted', 'indoor-air', 'concentrations', 'in', 'developing', 'the', 'overall', 'product', 'rankings.', '2.2', 'The', 'Review', 'and', 'Charge', 'On', 'July', '21-22,', '1997,', 'the', 'IHEC', 'Committee', 'met', 'at', 'the', 'EPA’s', 'Waterside', 'Mall', 'Complex', 'in', 'Washington,', 'D.C.', 'to', 'review', 'the', 'Source', 'Ranking', 'Database.', 'The', 'Committee', 'was', 'charged', 'to', 'review', 'the', 'assumptions', 'and', 'methodologies', 'used', 'in', 'scoring', 'product/material', 'categories', 'in', 'order', 'to', 'rank', 'them', 'for', 'further', 'characterization', 'and', 'possible', 'risk', 'management', 'attention,', 'and', 'to', 'respond', 'to', 'the', 'following', 'questions:', 'a)', 'b)', 'c)', 'e)', 'What', 'is', 'the', 'general', 'impression', 'of', 'the', 'completeness', 'and', 'quality', 'of', 'the', 'data', 'included?', 'Does', 'the', 'Committee', 'know', 'of', 'any', 'additional', 'data', 'that', 'should', 'be', 'added?', 'Is', 'the', 'chemical', 'formulation/emissions', 'data', 'adequate', '|', 'to', 'meet', 'the', 'goals', 'of', 'the', 'overall', 'project?', '~', 'Are', 'the', 'assumptions', 'for', 'each', 'environment', '(e.g.', 'building', 'volume', 'and', 'air', 'exchange', 'rate)', 'reasonable?', 'Should', 'more', 'environments', 'or', 'subcategories', 'of', 'the', 'listed', 'environments', 'be', 'added?', 'Are', 'exposed', 'populations', 'devountstl', 'for', 'in', 'an', 'aperoptiaere', 'manner?', 'Do', 'the', 'subcategories', 'of', 'people', 'in', 'each', 'environment', 'represent', 'an', 'adequate', 'accounting', 'of', 'potentially', 'exposed', 'populations?', 'Do', 'the', 'four', 'scenarios', 'for', 'estimating', 'room', 'concentrations', 'from', 'formulation/emissions', 'data', 'adequately', 'cover', 'the', 'range', 'of', 'products/materials', 'and', 'their', 'uses?', 'Are', 'the', 'procedures', 'for', 'estimating', 'emission', 'rates', 'and', 'indoor-air', 'OO0rESE902', ' ']