USGS7 NP= Neutralization Potential NP values determined by wet chemical methods. NP= equivalent CaCO3/1000 tons of material MPA= Maximum Potential Acidity MPA= percent Sulfur x 31.25 NNP= Net Neutralization Potential NNP= NP - MPA Depth NP MPA NNP 107 1.2 0.0 1.2 108 1.2 0.0 1.2 109 1.2 0.0 1.2 110 4.6 0.0 4.6 111 1.4 0.0 1.4 112 1.9 0.1 1.8 113 3.8 0.1 3.7 114 4.6 0.1 4.5 115 12.0 0.6 11.4 116 49.5 0.5 49.0 117 23.4 0.4 23.0 118 28.4 0.7 27.7 119 6.5 0.0 6.5 120 38.0 0.1 37.9 121 4.2 0.2 4.0 122 29.0 0.1 28.9 123 51.0 0.1 50.9 124 7.6 0.1 7.5 125 7.5 0.1 7.4 126 10.5 0.2 10.3 127 13.0 0.1 12.9 128 37.5 0.1 37.4 129 69.6 0.7 68.9 130 20.6 1.9 18.7 131 4.8 41.9 -37.1 132 10.0 23.6 -13.6 133 10.5 10.7 -0.2 134 3.4 90.3 -86.9 135 10.9 49.7 -38.8 136 19.6 19.4 0.2 137 3.2 2.9 0.3 138 0.6 73.0 -72.4 139 1.5 15.7 -14.2 140 N.D. N.D. N.D. 141 N.D. N.D. N.D. 142 2.8 0.9 1.9 143 7.0 0.2 6.8 144 3.6 0.5 3.1 145 5.6 0.9 4.7 146 6.0 1.0 5.0 147 6.5 1.3 5.2 148 5.6 2.1 3.5 149 10.2 0.7 9.5 150 6.1 0.4 5.7 151 7.1 2.6 4.5 152 9.4 0.8 8.6 153 10.4 1.3 9.1 154 21.4 0.0 21.4 155 30.8 0.1 30.7 156 35.6 0.1 35.5 157 30.5 0.2 30.3 158 19.1 0.5 18.6 159 32.2 0.5 31.7 160 17.0 0.0 17.0 161 25.6 1.3 24.3 162 10.1 0.5 9.6 163 18.9 1.8 17.1 164 53.2 0.3 52.9 165 51.6 0.1 51.5 166 21.6 0.0 21.6 167 45.5 0.1 45.4 168 47.2 1.1 46.1 169 11.2 0.1 11.1 170 11.9 0.3 11.6 171 8.4 1.1 7.3 172 8.2 2.1 6.1 173 7.2 19.1 -11.9 174 4.5 0.9 3.6 175 5.4 0.1 5.3 176 5.5 0.8 4.7 177 5.2 1.1 4.1 178 6.8 1.2 5.6 179 9.5 1.2 8.3 180 5.4 1.1 4.3 181 5.0 1.9 3.1 182 4.2 0.9 3.3 183 9.0 0.6 8.4 184 11.9 1.1 10.8 185 7.5 2.1 5.4 186 9.2 3.2 6.0 187 5.0 1.5 3.5 188 12.2 1.1 11.1 189 13.2 1.2 12.0 190 5.8 6.1 -0.3 191 5.1 0.9 4.2 192 8.6 0.6 8.0 193 9.5 0.8 8.7 194 7.5 0.8 6.7 195 5.0 1.5 3.5 196 4.8 0.3 4.5 197 4.8 0.5 4.3 198 4.8 0.3 4.5 199 5.1 1.1 4.0 200 6.1 2.5 3.6 201 3.9 33.3 -29.4 202 7.8 1.9 5.9 203 6.1 0.6 5.5 204 4.6 1.5 3.1 205 4.4 8.0 -3.6 206 3.9 5.4 -1.5 207 3.2 0.9 2.3 208 3.2 0.4 2.8 209 3.5 2.1 1.4 210 5.1 1.6 3.5 211 4.5 3.2 1.3 212 8.1 3.6 4.5 213 9.8 12.3 -2.5 214 6.8 7.2 -0.4 215 5.1 4.1 1.0 216 9.1 2.5 6.6 217 3.5 40.9 -37.4 218 5.6 4.5 1.1 219 5.4 7.4 -2.0 220 10.6 7.0 3.6 221 13.4 3.0 10.4 222 195.6 0.1 195.5 223 144.4 0.2 144.2 224 166.2 0.0 166.2 225 25.8 0.3 25.5 226 14.8 7.0 7.8 227 20.5 2.5 18.0 228 21.2 2.6 18.6 229 23.2 1.8 21.4 230 25.1 2.3 22.8 231 17.1 4.8 12.3 232 6.2 17.9 -11.7 233 -13.2 325.0 -338.2 234 0.1 67.8 -67.7 235 1.5 11.6 -10.1 236 1.1 6.4 -5.3 237 3.8 11.4 -7.6 238 4.4 81.7 -77.3 239 N.D. N.D. N.D. 240 N.D. N.D. N.D. 241 5.0 22.5 -17.5 242 0.0 44.2 -44.2 243 1.0 35.3 -34.3 244 0.1 5.1 -5.0 245 1.6 1.9 -0.3 246 1.1 3.4 -2.3 247 1.1 1.9 -0.8 248 0.8 3.2 -2.4 249 1.1 2.7 -1.6 250 0.8 6.3 -5.5 251 1.5 1.9 -0.4 252 2.0 2.3 -0.3 253 1.5 11.8 -10.3 254 1.8 3.2 -1.4 255 4.6 2.9 1.7 256 5.0 0.2 4.8 257 3.1 2.5 0.6 258 2.1 1.5 0.6 259 2.0 0.7 1.3 260 2.0 0.9 1.1 261 1.8 1.7 0.1 262 1.4 7.1 -5.7 263 43.9 7.5 36.4 264 71.4 2.5 68.9 265 115.0 1.0 114.0 266 1.9 2.2 -0.3 267 1.5 2.8 -1.3 268 1.6 2.6 -1.0 269 1.4 2.7 -1.3 270 1.4 5.4 -4.0 271 1.0 7.9 -6.9 272 1.4 7.1 -5.7 273 1.6 4.9 -3.3 274 2.2 2.7 -0.5 275 2.0 2.4 -0.4 276 2.0 2.2 -0.2 277 1.8 2.1 -0.3 278 2.0 2.1 -0.1 279 2.6 1.5 1.1 280 2.1 2.0 0.1 281 14.4 5.2 9.2 282 12.6 15.8 -3.2 283 3.1 2.5 0.6 284 3.0 2.3 0.7 285 3.0 3.3 -0.3 286 2.9 3.7 -0.8 287 2.0 3.8 -1.8 288 2.2 0.5 1.7 289 2.2 0.7 1.5 290 2.0 0.2 1.8 291 0.8 4.1 -3.3 292 1.2 1.4 -0.2 293 1.1 1.1 0.0 294 1.1 1.6 -0.5 295 1.1 1.5 -0.4 296 1.2 0.9 0.3 297 0.9 0.7 0.2 298 0.8 0.8 0.0 299 1.1 1.5 -0.4 300 0.9 1.3 -0.4 301 0.8 2.1 -1.3 302 0.8 2.4 -1.6 303 0.8 7.0 -6.2 304 0.4 6.2 -5.8 305 0.9 2.0 -1.1 306 1.1 1.9 -0.8 307 1.4 1.8 -0.4 308 1.1 1.6 -0.5 309 1.2 1.5 -0.3 310 0.9 2.2 -1.3 311 105.0 1.5 103.5 312 2.1 3.2 -1.1 313 1.5 3.0 -1.5 314 1.1 3.8 -2.7 315 1.5 2.7 -1.2 316 1.1 3.0 -1.9 317 1.1 4.0 -2.9 318 1.9 5.8 -3.9 319 2.1 5.0 -2.9 320 0.1 1.8 -1.7 321 1.8 5.0 -3.2 322 N.D. N.D. N.D. 323 N.D. N.D. N.D. 324 N.D. N.D. N.D. 325 N.D. N.D. N.D. 326 N.D. N.D. N.D. 327 N.D. N.D. N.D. 328 2.1 0.3 1.8 329 1.6 0.1 1.5 330 1.0 0.1 0.9 331 1.5 0.1 1.4 332 1.5 0.1 1.4 333 1.8 0.1 1.7 334 1.9 0.1 1.8 335 2.2 0.1 2.1 336 3.0 0.2 2.8 337 3.1 0.4 2.7 338 4.2 0.9 3.3 339 8.1 1.2 6.9 340 8.1 0.9 7.2 341 7.9 1.2 6.7 342 10.4 0.5 9.9 343 35.4 0.7 34.7 344 10.0 1.0 9.0 345 7.6 1.1 6.5 346 6.4 1.6 4.8 347 6.9 1.2 5.7 348 10.1 0.9 9.2 349 14.5 0.3 14.2 350 8.4 0.8 7.6 351 11.1 0.6 10.5 352 73.0 0.6 72.4 353 28.0 0.6 27.4 354 9.1 0.8 8.3 355 7.0 0.9 6.1 356 6.6 1.1 5.5 357 5.0 1.4 3.6 358 8.8 1.3 7.5 359 7.6 1.5 6.1 360 9.0 1.7 7.3 361 9.1 1.7 7.4 362 7.1 1.6 5.5 363 5.5 0.9 4.6 364 5.6 1.5 4.1 365 8.1 0.7 7.4 366 48.5 0.2 48.3 367 46.6 0.1 46.5 368 34.1 0.1 34.0 369 4.2 1.5 2.7 370 5.0 2.0 3.0 371 6.2 1.7 4.5 372 11.8 0.4 11.4 373 5.0 2.4 2.6 374 6.6 2.8 3.8 375 7.2 1.6 5.6 376 7.0 1.9 5.1 377 5.5 3.7 1.8 378 5.0 2.2 2.8 379 4.0 3.1 0.9 380 4.6 1.8 2.8 381 4.5 1.6 2.9 382 8.6 2.1 6.5 383 7.8 1.4 6.4 384 8.9 1.2 7.7 385 7.2 1.5 5.7 386 8.5 1.7 6.8 387 12.0 4.4 7.6 388 8.5 9.5 -1.0 389 3.9 0.4 3.5 390 3.5 0.8 2.7 391 2.5 0.9 1.6 392 0.5 1.2 -0.7 393 3.2 1.0 2.2 394 3.1 1.3 1.8 395 2.6 1.2 1.4 396 3.8 0.7 3.1 397 3.8 1.8 2.0 398 0.5 0.4 0.1 399 3.4 0.5 2.9 400 4.1 0.4 3.7 401 5.4 0.4 5.0 402 6.1 0.7 5.4 403 5.8 0.5 5.3 404 7.0 0.4 6.6 405 6.5 0.4 6.1 406 6.2 0.4 5.8 407 4.5 0.4 4.1 408 7.0 2.0 5.1 409 6.8 4.6 2.2 410 7.1 2.0 5.1 411 6.5 1.9 4.6 412 3.8 1.3 2.5 413 2.9 0.4 2.5 414 3.4 1.2 2.2 415 3.8 9.4 -5.6 416 4.2 0.3 3.9 417 4.2 0.9 3.3 418 5.6 1.0 4.6 419 6.0 1.2 4.8 420 6.3 1.3 5.0 421 4.8 0.6 4.2 422 5.0 1.1 3.9 423 3.1 0.3 2.8 424 3.1 0.2 2.9 425 3.6 0.4 3.2 426 3.2 0.3 2.9 427 2.9 0.2 2.7 428 4.1 0.7 3.4 429 2.2 1.0 1.2 430 3.6 0.2 3.4 431 3.1 0.4 2.7 432 2.8 0.0 2.8 433 2.8 0.0 2.8 434 2.0 0.0 2.0 435 2.4 0.1 2.3 436 2.4 0.0 2.4 437 2.5 0.0 2.5 438 3.2 0.0 3.2 439 4.6 0.0 4.6 440 3.2 0.1 3.1 441 3.1 0.4 2.7 442 3.5 0.2 3.3 443 3.6 0.1 3.5 444 4.9 0.0 4.9 445 3.2 0.3 2.9 446 2.9 0.3 2.6 447 3.6 0.0 3.6 448 3.5 0.1 3.4 449 3.8 0.1 3.7 450 3.9 0.0 3.9 451 17.1 0.0 17.1 452 47.1 0.0 47.1 453 241.9 0.3 241.6 454 308.8 0.2 308.6 455 158.1 0.7 157.4 456 18.5 6.6 11.9 457 11.5 6.0 5.5 458 11.0 7.4 3.6 459 13.2 10.0 3.2 460 5.6 38.3 -32.7 461 8.2 1.6 6.6 462 10.0 1.3 8.7 463 11.0 1.4 9.6 464 10.0 0.6 9.4 465 9.0 1.6 7.4 466 8.8 1.5 7.3 467 7.8 1.6 6.2 468 9.0 1.6 7.4 469 8.2 1.6 6.6 470 8.2 2.3 5.9 471 8.2 1.4 6.8 472 9.5 0.9 8.6 473 8.2 1.3 6.9 474 6.6 0.9 5.7 475 7.1 0.9 6.2 476 N.D. N.D. N.D. 477 4.5 0.6 3.9 478 3.9 0.5 3.4 479 3.0 1.0 2.0 480 2.0 0.5 1.5 481 1.9 0.6 1.3 482 2.0 0.3 1.7 483 2.0 0.3 1.7 484 1.9 0.2 1.7 485 2.5 0.1 2.4 486 2.2 0.5 1.7 487 2.4 0.6 1.8 488 2.4 0.1 2.3 489 2.1 0.3 1.8 490 2.5 0.7 1.8 491 3.2 1.4 1.8 492 3.5 0.0 3.5 493 3.8 0.1 3.7 494 4.0 0.0 4.0 495 4.2 0.6 3.6 496 5.8 0.4 5.4 497 5.5 0.0 5.5 498 4.5 2.6 1.9 499 3.6 0.8 2.8 500 3.6 1.2 2.4 501 6.0 0.0 6.0 502 5.5 0.0 5.5 503 6.0 0.2 5.8 504 6.9 0.4 6.5 505 4.8 0.0 4.8 506 3.6 0.0 3.6 507 3.9 0.8 3.1 508 1.8 0.0 1.8 509 5.0 0.0 5.0 510 5.5 0.1 5.4 511 4.8 0.0 4.8 512 4.2 1.1 3.1 513 7.1 0.0 7.1 514 6.2 0.0 6.2 515 4.5 0.0 4.5 516 4.2 0.1 4.1 517 3.1 0.0 3.1 518 3.4 0.0 3.4 519 4.2 0.2 4.0 520 2.9 0.1 2.8 521 3.4 0.0 3.4 522 5.8 0.5 5.3 523 4.2 0.2 4.0 524 5.2 0.1 5.1 525 6.1 0.8 5.3 526 9.5 1.3 8.2 527 6.5 1.2 5.3 528 5.5 1.0 4.5 529 4.0 2.1 1.9 530 3.1 1.2 1.9 531 5.9 1.4 4.5 532 6.1 1.7 4.4 533 6.4 5.8 0.6 534 6.6 1.3 5.3 535 5.6 2.7 2.9 536 5.2 2.4 2.8 537 N.D. N.D. N.D. 538 N.D. N.D. N.D. 539 3.4 0.2 3.2 540 2.9 0.4 2.5 541 3.4 0.7 2.7 542 3.9 2.8 1.1 543 4.5 0.7 3.8 544 4.2 0.9 3.3 545 4.4 1.2 3.2 546 4.6 1.0 3.6 547 3.5 1.8 1.7 548 5.6 1.3 4.3 549 9.0 0.7 8.3 550 4.0 0.5 3.5 551 3.0 1.4 1.6 552 2.4 0.7 1.7 553 25.0 0.4 24.6 554 2.2 0.5 1.7 555 4.2 0.5 3.7 556 4.6 0.2 4.4 557 20.5 0.3 20.2 558 11.8 0.1 11.7 559 4.2 0.1 4.1 560 7.1 0.2 6.9 561 12.3 0.2 12.1 562 14.9 0.0 14.9 563 65.5 0.1 65.4 564 215.6 0.1 215.5 565 182.5 0.1 182.4 566 12.5 0.3 12.2 567 12.2 0.2 12.0 568 7.6 0.2 7.4 569 6.9 0.2 6.7 570 4.5 1.2 3.3