Appendix A USGS Open-File Report 04-1383 Principal facts for the Guernsey landfill gravity survey: station - gravity station ID longitude - NAD83 datum in decimal degrees latitude - NAD83 datum in decimal degrees elevation - NAD83 datum, ellipsoidal height in meters obsgrv - observed gravity relative to IGSN71 itc - inner terrain correction (zones A-H) at 2.67 gm/cc otc - outer terrain correction (zones I-O) at 2.67 gm/cc faa - free air anomaly, referred to ellipsoidal height ba - Bouguer anomaly referred to ellipsoidal height, reduction density 2.67 gm/cc (proposed name: ellipsoidal Bouguer anomaly, NAGDB committee, 2003) station longitude latitude elevation obsgrv itc otc faa ba dec degree dec degree meter mGal mGal mGal mGal mGal bh1 -104.7466471 42.2694335 1310.089 979975.0075 0.1515 -0.024 6.6847 -141.1598 bh2 -104.7294881 42.2727569 1329.375 979972.9342 0.2021 -0.061 10.2580 -139.7423 bh3 -104.7179542 42.2600324 1316.303 979970.3679 0.0372 -0.069 4.8077 -143.8952 bh4 -104.7414126 42.2652887 1308.624 979973.4484 0.1159 -0.033 5.0473 -142.6771 bh5 -104.7414843 42.2607775 1305.713 979972.4056 0.3472 -0.032 3.5134 -143.6513 bh6 -104.7427084 42.2579626 1301.496 979972.6068 0.1309 -0.026 2.6680 -144.2326 bh7 -104.7417840 42.2538060 1305.101 979971.2414 0.0801 -0.039 2.7884 -144.5815 bh8 -104.7402831 42.2678780 1309.686 979974.3269 0.0584 -0.031 6.0200 -141.8793 bh9 -104.7382304 42.2699783 1312.306 979974.6819 0.0629 -0.034 6.9936 -141.1990 bh10 -104.7362703 42.2716287 1318.933 979974.2724 0.1520 -0.044 8.4785 -140.3803 bh11 -104.7340465 42.2745282 1338.761 979972.1292 0.1160 -0.065 12.1871 -138.9589 g01 -104.7422469 42.2787332 1350.343 979972.3490 0.1098 -0.063 15.5988 -136.8539 g02 -104.7410960 42.2780578 1347.285 979972.4588 0.1087 -0.063 14.8267 -137.2832 g03 -104.7379229 42.2793510 1349.371 979973.3697 0.1201 -0.062 16.2642 -136.0679 g04 -104.7401129 42.2789204 1347.042 979973.2149 0.0983 -0.061 15.4302 -136.6608 g05 -104.7441790 42.2787577 1344.866 979973.5931 0.1196 -0.059 15.1522 -136.6708 g06 -104.7424152 42.2807802 1351.700 979973.9555 0.0879 -0.061 17.4393 -135.1859 g07 -104.7404479 42.2788425 1346.794 979973.2301 0.1023 -0.061 15.3759 -136.6831 g08 -104.7407943 42.2787618 1346.825 979973.1410 0.1011 -0.061 15.3037 -136.7601 g09 -104.7411476 42.2786875 1348.367 979972.6999 0.0947 -0.062 15.3446 -136.8999 g10 -104.7397649 42.2789245 1346.005 979973.4625 0.1103 -0.060 15.3577 -136.6036 g11 -104.7393566 42.2790429 1345.238 979973.7754 0.1116 -0.060 15.4235 -136.4503 g12 -104.7389987 42.2791162 1346.954 979973.5224 0.1054 -0.061 15.6929 -136.3810 g13 -104.7386465 42.2791760 1347.686 979973.4792 0.1108 -0.062 15.8700 -136.2819 g14 -104.7415104 42.2786706 1349.305 979972.5030 0.0997 -0.063 15.4384 -136.9076 g15 -104.7418683 42.2786253 1349.866 979972.3600 0.1067 -0.063 15.4725 -136.9297 g16 -104.7422308 42.2786135 1349.827 979972.3906 0.1091 -0.063 15.4921 -136.9032 g17 -104.7425978 42.2786111 1348.737 979972.6193 0.1087 -0.062 15.3850 -136.8872 g18 -104.7382857 42.2792282 1348.777 979973.3144 0.1112 -0.062 16.0368 -136.2373 g19 -104.7375622 42.2793894 1349.365 979973.4874 0.1238 -0.062 16.3766 -135.9511 g20 -104.7394102 42.2769132 1332.423 979975.6152 0.1907 -0.052 13.5043 -136.8412 g21 -104.7405707 42.2762724 1342.433 979972.9954 0.1823 -0.062 14.0283 -137.4614 g22 -104.7400425 42.2754573 1326.359 979975.6177 0.1469 -0.046 11.7684 -137.9328 g23 -104.7401053 42.2755914 1327.792 979975.5352 0.1751 -0.047 12.1156 -137.7196 g24 -104.7401566 42.2757141 1331.199 979974.9596 0.2240 -0.052 12.5793 -137.5951 g25 -104.7402164 42.2758278 1336.771 979973.8140 0.2803 -0.058 13.1413 -137.6095 g26 -104.7402640 42.2759346 1341.418 979972.8742 0.3366 -0.062 13.6246 -137.5966 g27 -104.7402873 42.2760254 1342.472 979972.7595 0.2907 -0.063 13.8266 -137.5600 g28 -104.7403886 42.2761841 1342.291 979972.9731 0.2124 -0.062 13.9701 -137.4734 g29 -104.7404685 42.2763061 1342.417 979973.0438 0.1843 -0.062 14.0687 -137.4171 g30 -104.7405576 42.2765695 1342.948 979973.0817 0.1565 -0.062 14.2466 -137.3268 g31 -104.7406484 42.2768297 1343.531 979973.0300 0.1358 -0.062 14.3512 -137.3084 g32 -104.7407187 42.2770832 1342.830 979973.2564 0.1137 -0.061 14.3386 -137.2633 g33 -104.7408461 42.2773425 1344.402 979972.9765 0.1120 -0.062 14.5200 -137.2614 g34 -104.7409388 42.2776004 1345.737 979972.7446 0.1118 -0.062 14.6764 -137.2552 g35 -104.7410317 42.2778610 1346.285 979972.6499 0.1101 -0.063 14.7272 -137.2688 g36 -104.7411106 42.2781223 1347.080 979972.5271 0.1053 -0.062 14.8260 -137.2632 g37 -104.7411936 42.2783811 1347.736 979972.5633 0.0979 -0.062 15.0411 -137.1293 g38 -104.7395122 42.2778285 1339.404 979974.3629 0.1101 -0.057 14.3218 -136.8944 g39 -104.7391435 42.2807764 1355.565 979973.4818 0.1021 -0.062 18.1575 -134.8891 g40 -104.7377617 42.2774699 1345.549 979973.1501 0.1136 -0.063 15.0357 -136.8740 g41 -104.7391682 42.2744566 1323.989 979975.1210 0.1266 -0.045 10.6312 -138.8228 g42 -104.7407200 42.2747922 1323.452 979975.8407 0.1031 -0.042 11.1551 -138.2590 g43 -104.7432873 42.2755470 1325.917 979975.6922 0.1316 -0.043 11.6985 -137.9653 g44 -104.7398008 42.2776660 1339.737 979974.1958 0.1099 -0.058 14.2720 -136.9829 g45 -104.7400875 42.2775000 1340.979 979973.8450 0.1105 -0.059 14.3190 -137.0759 g46 -104.7404157 42.2773916 1343.469 979973.2428 0.1116 -0.061 14.4942 -137.1816 g47 -104.7393539 42.2780719 1339.781 979974.3736 0.1159 -0.058 14.4268 -136.8270 g48 -104.7390873 42.2783175 1339.062 979974.6325 0.1357 -0.056 14.4419 -136.7092 g49 -104.7385917 42.2788490 1346.291 979973.4657 0.1177 -0.061 15.4559 -136.5312 g50 -104.7387593 42.2797355 1352.441 979973.0073 0.1126 -0.063 16.8136 -135.8722 g51 -104.7389856 42.2802896 1352.834 979973.5698 0.1065 -0.062 17.4474 -135.2877 g52 -104.7404677 42.2783780 1349.780 979972.1648 0.1207 -0.064 15.2730 -137.1064