CREATE TABLE table_44970 ("Pollutant" TEXT, "Type" TEXT, "Standard" TEXT, "Averaging Time" TEXT, "Regulatory Citation" TEXT)

what is the type when the regulatory citation is 40 cfr 50.9(a)?
SELECT "Type" FROM table_44970 WHERE "Regulatory Citation" = '40 cfr 50.9(a)'
SELECT "Type" FROM "table_44970" WHERE "Regulatory Citation" = '40 cfr 50.9(a)'