Gary S. Swindell & Associates, Dallas, Texas, 214-987-0070
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| County | Formation | Depth | Total solids ppm | Cl ppm |
| GAINES | CLEARFORK | 5175 | 41072 | 21090 |
| GAINES | CLEARFORK | 6060 | 103785 | 62000 |
| GAINES | CLEARFORK | 6103 | 120455 | 71800 |
| GAINES | CLEARFORK | 6123 | 91699 | 55050 |
| GAINES | CLEARFORK | 6165 | 105752 | 63600 |
| GAINES | CLEARFORK | 6343 | 40747 | 20900 |
| GAINES | CLEARFORK | 6420 | 168678 | 107500 |
| GAINES | CLEARFORK | 6455 | 213606 | 130700 |
| GAINES | CLEARFORK | 6640 | 38831 | 23200 |
| GAINES | CLEARFORK | 6770 | 143842 | 87900 |
| GAINES | CLEARFORK | 6900 | 164800 | |
| GAINES | CLEARFORK | 6930 | 15500 | |
| GAINES | CLEARFORK | 6930 | 15500 | |
| GAINES | CLEARFORK | 6930 | 15500 | |
| GAINES | CLEARFORK | 7000 | 52789 | 30000 |
| GAINES | CLEARFORK | 7000 | 61785 | 36000 |
| GAINES | CLEARFORK | 7100 | 74195 | 45600 |
| GAINES | CLEARFORK | 7114 | 102985 | 60000 |
| GAINES | CLEARFORK | 7700 | 227796 | 142000 |
| GAINES | CLEARFORK SAND | 3220 | 159600 | |
| GAINES | CLEARFORK SAND | 6900 | 19747 | 8290 |
| GAINES | CLEARFORK SAND | 7000 | 188459 | 116000 |
| GAINES | CLEARFORK SAND | 7000 | 182840 | 114000 |
| GAINES | CLEARFORK SAND | 7300 | 159120 | |
| GAINES | DEVONIAN | 5795 | 114495 | 63700 |
| GAINES | DEVONIAN | 10500 | 41383 | 21231 |
| GAINES | DEVONIAN | 10919 | 50210 | 28400 |
| GAINES | DEVONIAN | 11025 | 36430 | 21077 |
| GAINES | DEVONIAN | 11070 | 35589 | 20385 |
| GAINES | DEVONIAN | 11070 | 38723 | 22534 |
| GAINES | DEVONIAN | 11125 | 29200 | |
| GAINES | DEVONIAN | 11125 | 36770 | 20168 |
| GAINES | DEVONIAN | 11125 | 37644 | 20567 |
| GAINES | DEVONIAN | 11125 | 36424 | 19917 |
| GAINES | DEVONIAN | 11125 | 20000 | |
| GAINES | DEVONIAN | 11125 | 72505 | 41575 |
| GAINES | DEVONIAN | 11200 | 45832 | 25629 |
| GAINES | DEVONIAN | 11502 | 52000 | |
| GAINES | DEVONIAN | 12300 | 100 | |
| GAINES | DEVONIAN | 12400 | 25497 | 13600 |
| GAINES | DEVONIAN | 12500 | 31936 | 17200 |
| GAINES | DEVONIAN | 12608 | 18500 | |
| GAINES | DEVONIAN | 12628 | 34709 | 19000 |
| GAINES | DEVONIAN | 12735 | 142780 | |
| GAINES | DEVONIAN | 12735 | 138294 | |
| GAINES | DEVONIAN DOLOMITE | 11150 | 38322 | 22420 |
| GAINES | DOLOMITE | 5994 | 23208 | 7180 |
| GAINES | ELLENBURGER | 12390 | 78065 | 47300 |
| GAINES | GLORIETA | 6100 | 170540 | 107500 |
| GAINES | GLORIETA | 6100 | 183058 | 114040 |
| GAINES | GLORIETA | 6115 | 98735 | 59100 |
| GAINES | LEONARD | 8742 | 22492 | 12000 |
| GAINES | LOWER CLEARFORK | 7056 | 162269 | 98600 |
| GAINES | LOWER CLEARFORK | 7072 | 71254 | 41000 |
| GAINES | LOWER CLEARFORK | 7288 | 162038 | 99000 |
| GAINES | LOWER CLEARFORK | 7432 | 129990 | 79100 |
| GAINES | OGALLALA FORM | 60 | 2490 | 615 |
| GAINES | PENNSYLVANIAN | 8900 | 53581 | 29500 |
| GAINES | SAN ANDRES | 4698 | 96299 | 57400 |
| GAINES | SAN ANDRES | 4725 | 101260 | 61000 |
| GAINES | SAN ANDRES | 4800 | 60677 | 32000 |
| GAINES | SAN ANDRES | 4800 | 71526 | 42000 |
| GAINES | SAN ANDRES | 4840 | 69920 | 39600 |
| GAINES | SAN ANDRES | 4841 | 60870 | 31600 |
| GAINES | SAN ANDRES | 4859 | 204279 | 124000 |
| GAINES | SAN ANDRES | 4900 | 69000 | 32600 |
| GAINES | SAN ANDRES | 4900 | 72300 | 34100 |
| GAINES | SAN ANDRES | 4900 | 50459 | 26900 |
| GAINES | SAN ANDRES | 4900 | 68100 | 31200 |
| GAINES | SAN ANDRES | 4900 | 191000 | 106000 |
| GAINES | SAN ANDRES | 4900 | 167268 | 99500 |
| GAINES | SAN ANDRES | 4900 | 52182 | 26700 |
| GAINES | SAN ANDRES | 4900 | 78287 | 39003 |
| GAINES | SAN ANDRES | 4900 | 120000 | |
| GAINES | SAN ANDRES | 4964 | 30000 | |
| GAINES | SAN ANDRES | 5032 | 82016 | 55065 |
| GAINES | SAN ANDRES | 5032 | 41383 | 21231 |
| GAINES | SAN ANDRES | 5032 | 217315 | 119700 |
| GAINES | SAN ANDRES | 5032 | 23181 | 13487 |
| GAINES | SAN ANDRES | 5032 | 56970 | 31200 |
| GAINES | SAN ANDRES | 5032 | 40666 | 26300 |
| GAINES | SAN ANDRES | 5032 | 44152 | 27380 |
| GAINES | SAN ANDRES | 5037 | 39310 | 26100 |
| GAINES | SAN ANDRES | 5060 | 41214 | 21200 |
| GAINES | SAN ANDRES | 5100 | 44330 | 25100 |
| GAINES | SAN ANDRES | 5100 | 27354 | 14000 |
| GAINES | SAN ANDRES | 5100 | 103140 | 65600 |
| GAINES | SAN ANDRES | 5100 | 44309 | 23040 |
| GAINES | SAN ANDRES | 5175 | 30240 | 13690 |
| GAINES | SAN ANDRES | 5200 | 64280 | 38300 |
| GAINES | SAN ANDRES | 5200 | 64280 | 38300 |
| GAINES | SAN ANDRES | 5200 | 29635 | 15650 |
| GAINES | SAN ANDRES | 5200 | 251553 | 158200 |
| GAINES | SAN ANDRES | 5200 | 31760 | 18500 |
| GAINES | SAN ANDRES | 5200 | 29635 | 15650 |
| GAINES | SAN ANDRES | 5225 | 48317 | 24400 |
| GAINES | SAN ANDRES | 5300 | 55553 | 34400 |
| GAINES | SAN ANDRES | 5375 | 39742 | 21730 |
| GAINES | SAN ANDRES | 8816 | 79605 | 48400 |
| GAINES | SAN ANGELO | 5032 | 61953 | 36900 |
| GAINES | SAN ANGELO | 5957 | 46498 | 23900 |
| GAINES | SAN ANGELO | 6370 | 25614 | 11460 |
| GAINES | SAN ANGELO | 6536 | 60794 | 38400 |
| GAINES | STRAWN | 10410 | 52000 | |
| GAINES | UPPER CLEARFORK | 6600 | 152749 | 94100 |
| GAINES | UPPER CLEARFORK | 6900 | 110200 | |
| GAINES | UPPER CLEARFORK | 7045 | 17669 | 7000 |
| GAINES | UPPER CLEARFORK | 7100 | 118530 | 70250 |
| GAINES | UPPER CLEARFORK | 7100 | 132945 | 81200 |
| GAINES | WASSON 6600 | 6630 | 83600 | |
| GAINES | WOLFCAMP | 9103 | 9150 | |
| GAINES | WOLFCAMP | 9120 | 82016 | 55065 |
| GAINES | WOLFCAMP REEF | 10349 | 201270 | 114700 |
| GALVESTON | ALTA LOMA SAND | 884 | 1660 | 820 |
| GALVESTON | ALTA LOMA SAND | 1000 | 1780 | 875 |
| GALVESTON | ALTA LOMA SAND | 1317 | 5870 | 3400 |
| GALVESTON | BEAUMONT CLAY | 100 | 1070 | 351 |
| GALVESTON | BEAUMONT CLAY | 279 | 2430 | 1160 |
| GALVESTON | FB I | 7064 | 113917 | 70288 |
| GALVESTON | FB I | 7064 | 139901 | 86234 |
| GALVESTON | FB I | 7064 | 139901 | 86234 |
| GALVESTON | FB I10X | 7592 | 109990 | 68036 |
| GALVESTON | FB I5W | 6456 | 114528 | 70457 |
| GALVESTON | FB I7 | 6990 | 108509 | 66835 |
| GALVESTON | FB I9A | 7290 | 121048 | 75005 |
| GALVESTON | FB II | 6000 | 157323 | 97514 |
| GALVESTON | FB II | 6500 | 134845 | 84084 |
| GALVESTON | FB II | 7172 | 114877 | 70784 |
| GALVESTON | FB II5A | 6806 | 115289 | 71222 |
| GALVESTON | FB II9A | 7474 | 158418 | 98774 |
| GALVESTON | FB III | 4500 | 118366 | 72513 |
| GALVESTON | FB III | 4500 | 109524 | 66993 |
| GALVESTON | FB III1B | 4129 | 108368 | 66974 |
| GALVESTON | FB III2A2 | 5222 | 95479 | 58840 |
| GALVESTON | FB III-A | 4560 | 112873 | 69280 |
| GALVESTON | FB V9 | 7309 | 130207 | 80103 |
| GALVESTON | FB VI1W | 3939 | 106370 | 65623 |
| GALVESTON | FB VII | 4834 | 114823 | 70261 |
| GALVESTON | FRIO | 8031 | 79042 | 48100 |
| GALVESTON | FRIO | 8048 | 96668 | 58750 |
| GALVESTON | FRIO | 8095 | 67897 | 41000 |
| GALVESTON | FRIO | 8464 | 54187 | 32300 |
| GALVESTON | FRIO | 8570 | 44617 | 26700 |
| GALVESTON | FRIO | 9078 | 54548 | 32750 |
| GALVESTON | FRIO | 9117 | 102114 | 61921 |
| GALVESTON | FRIO | 9258 | 110361 | 67012 |
| GALVESTON | FRIO | 9314 | 45495 | 26684 |
| GALVESTON | FRIO | 10364 | 62367 | 37223 |
| GALVESTON | FRIO GAS | 7970 | 149080 | 92400 |
| GALVESTON | LISSIE FORM | 1221 | 2020 | 1060 |
| GALVESTON | WAY SAND | 7900 | 118185 | 72000 |
| GARZA | ELLENBURGER | 8400 | 57700 | 30100 |
| GARZA | GLORIETA | 2400 | 47271 | 25200 |
| GARZA | GLORIETA | 2456 | 33778 | 17875 |
| GARZA | GLORIETA | 2480 | 61715 | 33550 |
| GARZA | GLORIETA | 2480 | 57658 | 31400 |
| GARZA | GLORIETA | 2480 | 37463 | 18800 |
| GARZA | GLORIETA | 2520 | 68300 | 34100 |
| GARZA | GLORIETA | 2650 | 76000 | 39000 |
| GARZA | GLORIETA | 2700 | 69338 | 40000 |
| GARZA | GLORIETA | 2700 | 60377 | 34400 |
| GARZA | GLORIETA | 2700 | 58400 | 33200 |
| GARZA | GLORIETA | 3000 | 216770 | 84100 |
| GARZA | GLORIETA | 3082 | 120250 | 72150 |
| GARZA | GLORIETA | 3605 | 237140 | 103500 |
| GARZA | GLORIETA | 3605 | 234540 | 89000 |
| GARZA | GLORIETA | 3966 | 168725 | 102000 |
| GARZA | GLORIETA | 3966 | 115000 | |
| GARZA | GLORIETA | 3966 | 151089 | 92200 |
| GARZA | PENN | 7960 | 111448 | 67240 |
| GARZA | PENN | 7979 | 113035 | 68400 |
| GARZA | PENN | 8098 | 95625 | 57720 |
| GARZA | SAN ANDRES | 1875 | 67010 | 36600 |
| GARZA | SAN ANDRES | 1926 | 166350 | 100000 |
| GARZA | SAN ANDRES | 1926 | 146430 | 65400 |
| GARZA | SAN ANDRES | 1926 | 156950 | 76000 |
| GARZA | SAN ANDRES | 1926 | 145410 | 65500 |
| GARZA | SAN ANDRES | 2556 | 85400 | 50000 |
| GARZA | SAN ANDRES | 2700 | 91000 | 54600 |
| GARZA | SAN ANDRES | 2900 | 119000 | 70800 |
| GARZA | SAN ANDRES | 3015 | 135125 | 80550 |
| GARZA | SAN ANDRES | 3097 | 135594 | 82000 |
| GARZA | SAN ANDRES | 3138 | 127609 | 79778 |
| GARZA | SAN ANDRES | 3138 | 181612 | 109000 |
| GARZA | SAN ANDRES | 3138 | 129883 | 80000 |
| GARZA | SAN ANDRES | 3150 | 136438 | 81000 |
| GARZA | SAN ANGELO | 1926 | 60223 | 32500 |
| GARZA | SAN ANGELO | 2456 | 67477 | 37650 |
| GARZA | SAN ANGELO | 2467 | 58653 | 32000 |
| GARZA | SAN ANGELO | 2520 | 68775 | 39200 |
| GARZA | SPRABERRY | 5070 | 159931 | 97550 |
| GARZA | STRAWN | 7400 | 84329 | 50180 |
| GARZA | STRAWN | 7751 | 84232 | 50900 |
| GARZA | STRAWN | 8060 | 123100 | 70500 |
| GARZA | STRAWN | 8150 | 140700 | 76700 |
| GOLIAD | PETTUS | 4100 | 14623 | 8227 |
| GOLIAD | SLICK SAND | 7557 | 24862 | 14787 |
| GOLIAD | SLICK SAND | 7571 | 5620 | 1770 |
| GOLIAD | SLICK SAND | 7571 | 28500 | 15600 |
| GRAY | BROWN DOLOMITE | 2685 | 259000 | 125820 |
| GRAY | BROWN DOLOMITE | 3000 | 156200 | |
| GRAY | BROWN DOLOMITE | 3000 | 107000 | |
| GRAY | BROWN DOLOMITE | 3000 | 100150 | |
| GRAY | DOLOMITE | 2317 | 138896 | 83086 |
| GRAY | DOLOMITE | 3000 | 204945 | 140000 |
| GRAY | DOLOMITE | 3333 | 200701 | 124000 |
| GRAY | GRANITE WASH | 3000 | 158100 | 94500 |
| GRAY | GRANITE WASH | 3000 | 219760 | 135812 |
| GRAY | OGALLALA FORM | 450 | 1120 | 312 |
| GRAY | WOLFCAMP | 2800 | 54750 | |
| GRAY | WOLFCAMP DOLOMITE | 2800 | 292000 | 114000 |
| GRAY | WOLFCAMP DOLOMITE | 2800 | 29291 | 15000 |
| GRAY | WOLFCAMP DOLOMITE | 2800 | 95000 | |
| GRAYSON | 4800 STRAWN | 4788 | 244712 | 151940 |
| GRAYSON | 5360 SAND | 5364 | 248139 | 154070 |
| GRAYSON | GLEN ROSE LS | 345 | 1750 | 60 |
| GRAYSON | OIL CREEK | 7156 | 167672 | 141696 |
| GRAYSON | PENNSYLVANIAN | 8900 | 188564 | 117018 |
| GRAYSON | RIVERSIDE SAND | 5008 | 236743 | 147680 |
| GRAYSON | S SANDSTONE | 5811 | 236600 | 139000 |
| GRAYSON | SAND | 7500 | 202215 | 125706 |
| GRAYSON | STRAWN | 3617 | 222424 | 138600 |
| GRAYSON | STRAWN | 3617 | 228140 | 141950 |
| GRAYSON | WOODBINE SAND | 1155 | 3380 | 472 |
| GREGG | WILCOX GROUP | 290 | 1520 | 750 |
| GREGG | WILCOX GROUP | 780 | 1600 | 630 |
| GREGG | WILCOX GROUP | 875 | 1780 | 740 |
| GREGG | WILCOX GROUP | 906 | 1830 | 780 |
| GREGG | WOODBINE | 3115 | 61300 | 37060 |
| GREGG | WOODBINE | 3700 | 64268 | 38470 |
| GREGG | WOODBINE | 3700 | 61757 | 37080 |
| GREGG | WOODBINE | 3700 | 60255 | 36120 |
| GREGG | WOODBINE | 3757 | 60378 | 37165 |
| GUADALUPE | EDWARDS LS | 2350 | 1000 | 1000 |