(BRAVO) Study: Final Report. - Desert Research Institute

More documents

Recommendations

Info

Final Report — September 2004 Figure 10-3. Contour plot of locations of top 50 loadings for Factor 3 (Undetermined source type). Figure 10-4. Contour plot of locations of top 50 loadings for Factor 4 (Smelting). 10-5
Final Report — September 2004 Table 10-2 suggests that Factor 1 is related to crustal or soil elements. Factor 1 accounted for approximately 57 percent of the variance. The top 50 loadings of this factor occur in the southern part of Texas, as shown in Figure 10-1. Factor 2 accounted for about 30 percent of the total variance. Factor 2 suggests a relationship to coal burning due to the combination of sulfur (S) and hydrogen (H) and the tracer selenium (Se). The top 50 loadings of this factor occur in eastern Texas, with the highest factor scores near the Texas- Louisiana border, as shown in Figure 10-2. Factor 3 was an undetermined factor that accounted for about 7 percent of the total variance. Most of the top 50 loadings of Factor 3 were concentrated in southeastern Texas. Factor 4 suggests smelter influence with the combination of copper (Cu), zinc (Zn) and lead (Pb). It accounted for just under 5 percent of the total variance. The top 50 loadings of this factor were distributed throughout the study area, as shown in Figure 10-4. Turning now to the Big Bend data set, the most significant components of the five factors (labeled BB1 through BB5) are displayed in Table 10-3. (Compare these factors with very similar ones that were displayed in Table 6-3. There are minor differences because the data set used for the factor analyses of Table 6-3 included both 6-hr and 24-hr samples, while the data set for Table 10-3 included only 24-hr samples.) The selection criterion was again that the absolute value of the factor loading corresponding to a component was greater than 0.3. Note that the loading for vanadium in Factor BB5 was a negative -0.44. Table 10-3. Components with the most significant factor loadings for each factor of the Big Bend data set. Factor BB1 Factor BB2 Factor BB3 Factor BB4 Factor BB5 Al, Si, K, Ca, Ti, V, Mn, Fe, Rb, Sr, NO3 – , Na + , Mg 2+ , Ca 2+ , O1 H, S, Zn, As, Se, Br, SO4 2- , NH4 + , O3, O4, OP, E1 Zn, Pb, Br, NO3 – , K + , Ca 2+ , O3, O4, E1 O1, O2, O3, OP, E1, E2, E3 Na, V*, NO3 – , Na + *The factor loading for V is negative. Table 10-3 suggests that Factor BB1 was most likely associated with soil, with the most prominent factor loadings (>0.60) coming from elements such as aluminum (Al), silicon (Si), potassium (K), calcium (Ca), titanium (Ti), manganese (Mn), iron (Fe), rubidium (Rb), strontium (Sr), and the magnesium ion (Mg 2+ ). Other variables with significant loadings on this factor were vanadium (V), nitrate (NO 3 ), the sodium ion (Na + ), and one of the organic carbon groups, O1. Factor BB1 accounted for 39 percent of the total variance. Factor BB2, which explained 27 percent of the variance, was sulfate-related, with the heaviest loadings (>0.90) coming from sulfur (S), hydrogen (H), sulfate (SO 4 ), and ammonia (NH 4 ). Other important variables loading on this factor were selenium (Se), bromine (Br), organic carbon groups O2 and O4, and elemental carbon group E1. The inclusion of selenium suggests this second factor could be associated with coal combustion, a primary source of emissions that lead to the formation of sulfates, while the presence of organic carbon fractions implies that another source category may also be involved. 10-6
Page 1 and 2:
Final Report — September 2004 Big
Page 3 and 4:
Final Report — September 2004 Pre
Page 5 and 6:
Final Report — September 2004 Ack
Page 7 and 8:
Final Report — September 2004 Tab
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
Final Report — September 2004 Lis
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Final Report — September 2004 BRA
Page 35 and 36:
Final Report — September 2004 Thi
Page 37 and 38:
Final Report — September 2004 All
Page 39 and 40:
Final Report — September 2004 Fig
Page 41 and 42:
Page 43 and 44:
Final Report — September 2004 •
Page 45 and 46:
Final Report — September 2004 U.S
Page 47 and 48:
Final Report — September 2004 - S
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Final Report — September 2004 sul
Page 59 and 60:
Final Report — September 2004 A f
Page 61 and 62:
Page 63 and 64:
Final Report — September 2004 sit
Page 65 and 66:
Final Report — September 2004 col
Page 67 and 68:
Page 69 and 70:
Final Report — September 2004 pro
Page 71 and 72:
Final Report — September 2004 Che
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Final Report — September 2004 cou
Page 79 and 80:
Final Report — September 2004 Sec
Page 81 and 82:
Final Report — September 2004 5.
Page 83 and 84:
Final Report — September 2004 ful
Page 85 and 86:
Final Report — September 2004 The
Page 87 and 88:
Final Report — September 2004 5.2
Page 89 and 90:
Final Report — September 2004 90-
Page 91 and 92:
Page 93 and 94:
Final Report — September 2004 vol
Page 95 and 96:
Final Report — September 2004 slo
Page 97 and 98:
Final Report — September 2004 3 P
Page 99 and 100:
Final Report — September 2004 Thi
Page 101 and 102:
Final Report — September 2004 Fin
Page 103 and 104:
Page 105 and 106:
Page 107 and 108:
Page 109 and 110:
Final Report — September 2004 6.E
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Final Report — September 2004 abo
Page 117 and 118:
Final Report — September 2004 dif
Page 119 and 120:
Final Report — September 2004 ana
Page 121 and 122:
Final Report — September 2004 1/M
Page 123 and 124:
Final Report — September 2004 cal
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Final Report — September 2004 Big
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
Final Report — September 2004 Ext
Page 139 and 140:
Final Report — September 2004 dat
Page 141 and 142:
Page 143 and 144:
Page 145 and 146:
Final Report — September 2004 and
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Final Report — September 2004 1 2
Page 159 and 160:
Page 161 and 162:
Page 163 and 164:
Final Report — September 2004 ino
Page 165 and 166:
Page 167 and 168:
Page 169 and 170:
Page 171 and 172:
Final Report — September 2004 In
Page 173 and 174:
Final Report — September 2004 Ove
Page 175 and 176:
Final Report — September 2004 ave
Page 177 and 178:
Final Report — September 2004 For
Page 179 and 180:
Page 181 and 182:
Page 183 and 184:
Final Report — September 2004 Sep
Page 185 and 186:
Final Report — September 2004 eas
Page 187 and 188:
Final Report — September 2004 cha
Page 189 and 190: Final Report — September 2004 For
Page 191 and 192: Final Report — September 2004 ocP
Page 193 and 194: Final Report — September 2004 As
Page 195 and 196: Final Report — September 2004 Tab
Page 197 and 198: Final Report — September 2004 lim
Page 199 and 200: Final Report — September 2004 Tex
Page 203 and 204: Final Report — September 2004 REM
Page 205 and 206: Final Report — September 2004 mix
Page 207 and 208: Final Report — September 2004 9.9
Page 211 and 212: Final Report — September 2004 Fig
Page 213 and 214: Final Report — September 2004 20
Page 217 and 218: Final Report — September 2004 sit
Page 219 and 220: Final Report — September 2004 unc
Page 223 and 224: Final Report — September 2004 Nor
Page 227 and 228: Final Report — September 2004 Ove
Page 231 and 232: Final Report — September 2004 The
Page 233 and 234: Final Report — September 2004 und
Page 235 and 236: Final Report — September 2004 tra
Page 237 and 238: Final Report — September 2004 att
Page 239: Final Report — September 2004 Fig
Page 243 and 244: Final Report — September 2004 Mea
Page 245 and 246: Final Report — September 2004 Sul
Page 247 and 248: Final Report — September 2004 Dat
Page 249 and 250: Final Report — September 2004 Hig
Page 251 and 252: Final Report — September 2004 As
Page 253 and 254: Final Report — September 2004 inc
Page 255 and 256: Final Report — September 2004 11.
Page 257 and 258: Final Report — September 2004 Add
Page 259 and 260: Final Report — September 2004 Tex
Page 261 and 262: Final Report — September 2004 Sul
Page 263 and 264: Final Report — September 2004 Rel
Page 267 and 268: Final Report — September 2004 MAD
Page 269 and 270: Final Report — September 2004 (8g
Page 273 and 274: Final Report — September 2004 Big
Page 275 and 276: Final Report — September 2004 6 5
Page 277 and 278: Final Report — September 2004 abs
Page 279 and 280: Final Report — September 2004 CMA
Page 281 and 282: Final Report — September 2004 Ben
Page 283 and 284: Final Report — September 2004 int
Page 285 and 286: Final Report — September 2004 eas
Page 287 and 288: Final Report — September 2004 bia
Page 289 and 290: Final Report — September 2004 It
Page 291 and 292:
Page 293 and 294:
Page 295 and 296:
Final Report — September 2004 Jus
Page 297 and 298:
Final Report — September 2004 the
Page 299 and 300:
Page 301 and 302:
Page 303 and 304:
Final Report — September 2004 Byu
Page 305 and 306:
Final Report — September 2004 Gre
Page 307 and 308:
Final Report — September 2004 Mol
Page 309 and 310:
Final Report — September 2004 Sch
show all

(BRAVO) Study: Final Report. - Desert Research Institute

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?