| *** Primary Characterization Data *** |
| Pedon ID: S2020MD031038 | ( Montgomery, Maryland ) | Print Date: Dec 8 2025 5:12PM |
| Sampled as on May 26, 2020: | Combs ; Coarse-loamy, mixed, active, mesic Fluventic Hapludoll |
| Revised to : |
| United States Department of Agriculture | ||||
| SSL | - | Project | I2021USMD022 Potomac River Island Project P Index Part 3 | Natural Resources Conservation Service |
| - | Site ID | S2020MD031038 Lat: 39° 3' 53.18" north Long: 77° 23' 8.75" west MLRA: 148 | National Soil Survey Center | |
| - | Pedon No. | 21N0209 | Kellogg Soil Survey Laboratory | |
| - | General Methods 1B1A, 2A1, 2B | Lincoln, Nebraska 68508-3866 | ||
| Layer | Horizon | Orig Hzn | Depth (cm) | Field Label 1 | Field Label 2 | Field Label 3 | Field Texture | Lab Texture |
| 21N00938 | A1 | A1 | 0-15 | S2020MD031038-1 | LS | |||
| 21N00939 | A1 | A1 | 15-30 | S2020MD031038-2 | LS | |||
| 21N00940 | A2 | A2 | 30-45 | S2020MD031038-3 | SL | |||
| 21N00941 | A2 | A2 | 45-60 | S2020MD031038-4 | SL | |||
| 21N00942 | Bw | Bw | 60-75 | S2020MD031038-5 | SL | |||
| 21N00943 | Bw | Bw | 75-90 | S2020MD031038-6 | SL | |||
| 21N00944 | Bw | Bw | 90-105 | S2020MD031038-7 | SL | |||
| 21N00945 | C | C | 105-135 | S2020MD031038-8 | S | |||
| 21N00946 | C | C | 135-165 | S2020MD031038-9 | S | |||
| 21N00947 | Ab | Ab | 165-195 | S2020MD031038-10 | SIL | |||
| Pedon Calculations | |||
| Calculation Name | Result | Units of Measure | |
| Volume, >2mm, Weighted Average | 0 | % vol | |
| Weighted Particles, 0.1-75mm, 75 mm Base | 0 | % wt | |
| Weighted averages based on control section: 25-100 cm | |||
| *** Primary Characterization Data *** |
| Pedon ID: S2020MD031038 | ( Montgomery, Maryland ) | Print Date: Dec 8 2025 5:12PM |
| Sampled As | : | Combs | Coarse-loamy, mixed, active, mesic Fluventic Hapludoll | ||
| USDA-NRCS-NSSC-Soil Survey Laboratory | ; | Pedon No. 21N0209 | |||
| PSDA & Rock Fragments | -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | -11- | -12- | -13- | -14- | -15- | -16- | -17- | -18- | |||
| (- - - - - Total - - - - - -) | (- - Clay - - -) | (- - - - Silt - - - - -) | (- - - - - - - - - - - - Sand - - - - - - - - - - - -) | ( Rock Fragments (mm) ) | |||||||||||||||||
| Lab | Clay | Silt | Sand | Fine | CO3 | Fine | Coarse | VF | F | M | C | VC | (- - - - - - - - Weight - - - - - - - -) | >2 mm | |||||||
| Text- | < | .002 | .05 | < | < | .002 | .02 | .05 | .10 | .25 | .5 | 1 | 2 | 5 | 20 | .1- | wt % | ||||
| Depth | ure | .002 | -.05 | -2 | .0002 | .002 | -.02 | -.05 | -.10 | -.25 | -.50 | -1 | -2 | -5 | -20 | -75 | 75 | whole | |||
| Layer | (cm) | Horz | Prep | (- - - - - - - - - - - - - - - - - - - - - - - - - - % of <2mm Mineral Soil - - - - - - - - - - - - - - - - - - - - - - - - - - -) | (- - - - - - - % of <75mm - - - - - -) | soil | |||||||||||||||
| 21N00938 | 0-15 | A1 | S | -- | -- | -- | -- | -- | |||||||||||||
| 21N00939 | 15-30 | A1 | S | -- | -- | -- | -- | -- | |||||||||||||
| 21N00940 | 30-45 | A2 | S | -- | -- | -- | -- | -- | |||||||||||||
| 21N00941 | 45-60 | A2 | S | -- | -- | -- | -- | -- | |||||||||||||
| 21N00942 | 60-75 | Bw | S | -- | -- | -- | -- | -- | |||||||||||||
| 21N00943 | 75-90 | Bw | S | -- | -- | -- | -- | -- | |||||||||||||
| 21N00944 | 90-105 | Bw | S | -- | -- | -- | -- | -- | |||||||||||||
| 21N00945 | 105-135 | C | S | -- | -- | -- | -- | -- | |||||||||||||
| 21N00946 | 135-165 | C | S | -- | -- | -- | -- | -- | |||||||||||||
| 21N00947 | 165-195 | Ab | S | -- | -- | -- | -- | -- | |||||||||||||
| Bulk Density & Moisture | -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | -11- | -12- | -13- | -14- | |||
| (Bulk Density) | Cole | (- - - - - - - - - - - Water Content - - - - - - - - - - -) | ( Air Dry-Oven Dry ) | WRD | Aggst | ||||||||||||
| 33 | Oven | Whole | 6 | 10 | 33 | 1500 | 1500 kPa | (- - - - Ratio - - - -) | Whole | Stabl | (- - Ratio/Clay - -) | ||||||
| Depth | kPa | Dry | Soil | kPa | kPa | kPa | kPa | Moist | Corrected | Soil | 2-0.5mm | CEC7 | 1500 kPa | ||||
| Layer | (cm) | Horz | Prep | (- - - g cm-3 - - -) | (- - - - - - - - - - - - pct of < 2mm - - - - - - - - - - - -) | cm3 cm-3 | % | ||||||||||
| 3D1 | |||||||||||||||||
| 21N00938 | 0-15 | A1 | S | 1.007 | |||||||||||||
| 21N00939 | 15-30 | A1 | S | 1.008 | |||||||||||||
| 21N00940 | 30-45 | A2 | S | 1.012 | |||||||||||||
| 21N00941 | 45-60 | A2 | S | 1.012 | |||||||||||||
| 21N00942 | 60-75 | Bw | S | 1.010 | |||||||||||||
| 21N00943 | 75-90 | Bw | S | 1.010 | |||||||||||||
| 21N00944 | 90-105 | Bw | S | 1.010 | |||||||||||||
| 21N00945 | 105-135 | C | S | 1.004 | |||||||||||||
| 21N00946 | 135-165 | C | S | 1.005 | |||||||||||||
| 21N00947 | 165-195 | Ab | S | 1.014 | |||||||||||||
| *** Primary Characterization Data *** |
| Pedon ID: S2020MD031038 | ( Montgomery, Maryland ) | Print Date: Dec 8 2025 5:12PM |
| Sampled As | : | Combs | Coarse-loamy, mixed, active, mesic Fluventic Hapludoll | ||
| USDA-NRCS-NSSC-Soil Survey Laboratory | ; | Pedon No. 21N0209 | |||
| pH & Carbonates | -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | -11- | |||
| (- - - - - - - - - - - - - - - - - - pH - - - - - - - - - - - - - - - - -) | (- - Carbonate - -) | (- - Gypsum - - -) | ||||||||||||
| CaCl2 | As CaCO3 | As CaSO4*2H2O | Resist | |||||||||||
| Depth | 0.01M | H2O | Sat | <2mm | <20mm | <2mm | <20mm | ohms | ||||||
| Layer | (cm) | Horz | Prep | KCl | 1:2 | 1:1 | Paste | Oxid | NaF | (- - - - - - - - - - - - % - - - - - - - - - - -) | cm-1 | |||
| 4C1a2a | 4C1a2a | |||||||||||||
| 21N00938 | 0-15 | A1 | S | 7.2 | 7.5 | |||||||||
| 21N00939 | 15-30 | A1 | S | 7.3 | 7.6 | |||||||||
| 21N00940 | 30-45 | A2 | S | 7.3 | 7.6 | |||||||||
| 21N00941 | 45-60 | A2 | S | 7.2 | 7.6 | |||||||||
| 21N00942 | 60-75 | Bw | S | 7.1 | 7.5 | |||||||||
| 21N00943 | 75-90 | Bw | S | 7.0 | 7.4 | |||||||||
| 21N00944 | 90-105 | Bw | S | 7.0 | 7.3 | |||||||||
| 21N00945 | 105-135 | C | S | 7.0 | 7.4 | |||||||||
| 21N00946 | 135-165 | C | S | 7.0 | 7.4 | |||||||||
| 21N00947 | 165-195 | Ab | S | 7.7 | 8.1 | |||||||||
| Phosphorous | -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | -11- | -12- | |||
| (- - - - - - - - - - - - - - - - - - - - - - - Phosphorous - - - - - - - - - - - - - - - - - - - - -) | KCl | ||||||||||||||
| Melanic | NZ | Acid | Anion Exch Resin | Bray | Bray | Olsen | H2O | Citric | Mehlich | Extr | |||||
| Depth | Index | Oxal | Available | Capacity | 1 | 2 | Acid | III | NO3 | ||||||
| Layer | (cm) | Horz | Prep | % | (- - - - - - - - - - - - - - - - - - - - - - - - - - - mg kg-1 - - - - - - - - - - - - - - - - - - - -) | ||||||||||
| 4D6a1 | |||||||||||||||
| 21N00938 | 0-15 | A1 | S | 43.1 | |||||||||||
| 21N00939 | 15-30 | A1 | S | 45.5 | |||||||||||
| 21N00940 | 30-45 | A2 | S | 29.2 | |||||||||||
| 21N00941 | 45-60 | A2 | S | 21.6 | |||||||||||
| 21N00942 | 60-75 | Bw | S | 18.3 | |||||||||||
| 21N00943 | 75-90 | Bw | S | 14.6 | |||||||||||
| 21N00944 | 90-105 | Bw | S | 13.7 | |||||||||||
| 21N00945 | 105-135 | C | S | 9.4 | |||||||||||
| 21N00946 | 135-165 | C | S | 7.8 | |||||||||||
| 21N00947 | 165-195 | Ab | S | 6.4 | |||||||||||
| *** Primary Characterization Data *** |
| Pedon ID: S2020MD031038 | ( Montgomery, Maryland ) | Print Date: Dec 8 2025 5:12PM |
| Sampled As | : | Combs | Coarse-loamy, mixed, active, mesic Fluventic Hapludoll | ||
| USDA-NRCS-NSSC-Soil Survey Laboratory | ; | Pedon No. 21N0209 | |||
| Trace Elements Tier 1 | -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | -11- | -12- | |||
| Depth | Ag | As | Ba | Be | Cd | Co | Cr | Cu | Mn | Mo | Hg | ||||
| Layer | (cm) | Horz | Prep | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | ug/kg | |
| 4H1a | 4H1a | 4H1a | 4H1a | 4H1a | 4H1a | 4H1a | 4H1a | 4H1a | 4H1a | 4H1a | |||||
| 21N00938 | 0-15 | A1 | HM | 0.08 | 4.44 | 125.75 | 0.86 | 0.21 | 15.72 | 25.27 | 16.43 | 674.03 | 0.46 | 77 | |
| 21N00939 | 15-30 | A1 | HM | 0.08 | 4.54 | 126.28 | 0.87 | 0.22 | 16.36 | 25.76 | 16.80 | 674.74 | 0.35 | 72 | |
| 21N00940 | 30-45 | A2 | HM | 0.11 | 5.30 | 130.14 | 0.94 | 0.28 | 17.92 | 27.17 | 22.50 | 747.15 | 0.55 | 123 | |
| 21N00941 | 45-60 | A2 | HM | 0.08 | 5.80 | 135.08 | 1.00 | 0.27 | 16.70 | 24.31 | 19.33 | 714.63 | 0.57 | 85 | |
| 21N00942 | 60-75 | Bw | HM | 0.08 | 6.77 | 141.64 | 1.13 | 0.24 | 17.34 | 24.83 | 18.76 | 792.23 | 0.68 | 54 | |
| 21N00943 | 75-90 | Bw | HM | 0.07 | 6.67 | 132.51 | 0.96 | 0.21 | 16.15 | 21.88 | 16.84 | 751.18 | 0.69 | 34 | |
| 21N00944 | 90-105 | Bw | HM | 0.09 | 7.22 | 152.28 | 1.05 | 0.22 | 16.72 | 25.02 | 17.53 | 813.72 | 0.66 | 36 | |
| 21N00945 | 105-135 | C | HM | 0.04 | 2.54 | 66.33 | 0.44 | 0.08 | 7.64 | 14.85 | 8.36 | 342.51 | 0.30 | 11 | |
| 21N00946 | 135-165 | C | HM | 0.04 | 2.62 | 72.60 | 0.51 | 0.07 | 8.67 | 17.11 | 10.08 | 400.68 | 0.27 | 16 | |
| 21N00947 | 165-195 | Ab | HM | 0.09 | 6.39 | 182.78 | 1.21 | 0.22 | 18.31 | 29.64 | 20.94 | 918.31 | 0.57 | 55 | |
| Trace Elements Tier 2 | -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | -11- | |||
| Depth | Ni | P | Pb | Sb | Se | Sn | Sr | Tl | V | W | Zn | |||
| Layer | (cm) | Horz | Prep | mg/kg | mg/kg | mg/kg | mg/kg | ug/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg |
| 4H1a | 4H1a | 4H1a | 4H1a | 4H1a | 4H1a | 4H1a | 4H1a | 4H1a | 4H1a | |||||
| 21N00938 | 0-15 | A1 | HM | 21.44 | 542.70 | 17.34 | 0.14 | 445.09 | 1.51 | 43.98 | 44.94 | 0.01 | 128.40 | |
| 21N00939 | 15-30 | A1 | HM | 21.33 | 522.89 | 18.14 | 0.09 | 416.06 | 2.47 | 42.95 | 45.74 | 0.01 | 137.35 | |
| 21N00940 | 30-45 | A2 | HM | 22.82 | 493.25 | 22.11 | 0.19 | 475.22 | 1.78 | 34.73 | 52.29 | 0.01 | 183.96 | |
| 21N00941 | 45-60 | A2 | HM | 23.01 | 422.91 | 19.28 | 0.21 | 429.76 | 1.85 | 34.79 | 47.62 | 0.02 | 103.00 | |
| 21N00942 | 60-75 | Bw | HM | 23.10 | 438.96 | 18.10 | 0.22 | 405.27 | 1.21 | 33.85 | 48.88 | 0.02 | 85.13 | |
| 21N00943 | 75-90 | Bw | HM | 22.19 | 350.65 | 15.24 | 0.19 | 372.39 | 1.00 | 23.30 | 43.81 | 0.01 | 69.85 | |
| 21N00944 | 90-105 | Bw | HM | 23.02 | 391.44 | 16.45 | 0.18 | 408.57 | 1.03 | 26.20 | 49.51 | 0.01 | 77.94 | |
| 21N00945 | 105-135 | C | HM | 9.27 | 219.32 | 6.81 | 0.06 | 169.13 | 0.39 | 18.05 | 30.72 | 0.01 | 27.98 | |
| 21N00946 | 135-165 | C | HM | 10.44 | 243.88 | 7.50 | 0.05 | 162.76 | 0.42 | 17.71 | 33.63 | 0.01 | 30.66 | |
| 21N00947 | 165-195 | Ab | HM | 24.96 | 412.91 | 16.13 | 0.13 | 456.36 | 1.14 | 51.83 | 62.50 | 0.01 | 76.19 | |
| *** Primary Characterization Data *** |
| Pedon ID: S2020MD031038 | ( Montgomery, Maryland ) | Print Date: Dec 8 2025 5:12PM |
| Sampled As | : | Combs | Coarse-loamy, mixed, active, mesic Fluventic Hapludoll | ||
| USDA-NRCS-NSSC-Soil Survey Laboratory | ; | Pedon No. 21N0209 | |||
| Major Elements | -1- | -2- | -3- | -4- | -5- | -6- | -7- | -8- | -9- | -10- | -11- | -12- | |||
| Depth | Al | Ca | Fe | K | Mg | Mn | Na | P | Si | Sr | Ti | Zr | |||
| Layer | (cm) | Horz | Prep | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg | mg/kg |
| 4H1b | 4H1b | 4H1b | 4H1b | 4H1b | 4H1b | 4H1b | 4H1b | 4H1b | 4H1b | 4H1b | 4H1b | ||||
| 21N00938 | 0-15 | A1 | HM | 35748 | 9932 | 29246 | 13551 | 5209 | 816 | 5198 | 757 | 292780 | 82 | 7214 | 106 |
| 21N00939 | 15-30 | A1 | HM | 34919 | 9306 | 28363 | 13667 | 4988 | 793 | 5300 | 702 | 291103 | 79 | 6824 | 83 |
| 21N00940 | 30-45 | A2 | HM | 37464 | 8592 | 29433 | 12671 | 4999 | 790 | 4937 | 634 | 254357 | 78 | 6533 | 105 |
| 21N00941 | 45-60 | A2 | HM | 37530 | 6401 | 28006 | 12844 | 4116 | 773 | 4000 | 492 | 290581 | 71 | 6097 | 130 |
| 21N00942 | 60-75 | Bw | HM | 40613 | 6661 | 30802 | 14698 | 4392 | 851 | 4497 | 605 | 278706 | 77 | 6622 | 130 |
| 21N00943 | 75-90 | Bw | HM | 37929 | 5003 | 26903 | 13643 | 3728 | 767 | 3625 | 515 | 316762 | 64 | 5374 | 118 |
| 21N00944 | 90-105 | Bw | HM | 42005 | 5597 | 29002 | 14879 | 4100 | 811 | 3788 | 447 | 278091 | 72 | 5848 | 128 |
| 21N00945 | 105-135 | C | HM | 20875 | 4654 | 16897 | 9405 | 2883 | 410 | 3753 | 323 | 294552 | 46 | 4507 | 41 |
| 21N00946 | 135-165 | C | HM | 25697 | 5756 | 21017 | 10834 | 3345 | 490 | 4427 | 240 | 398100 | 58 | 5668 | 63 |
| 21N00947 | 165-195 | Ab | HM | 48779 | 10767 | 33589 | 15207 | 5263 | 917 | 4721 | 555 | 277641 | 91 | 6312 | 131 |