Phosphate-Based Treatment of Contaminated Land in Jasper County, Missouri

Missouri Department of Natural ResourcesDavid E. Mosby, RGdave.mosby@dnr.mo.gov573/751-3356

Two Separate EPA Grants Bioavailability of Lead Contaminated Residential Soil treated using In Situ Phosphate

Abandoned or Former Lead/Zinc Mine Reclamation Demonstration

1994 lead exposure study done by the Missouri Department of Health and Senior Services

14% of the children had elevated blood lead

25% of the children near the smelter had elevated blood lead

EPA began Lead Strategy - started sampling thousands of homes all over Joplin

Residential Soil Background

LeadContaminationin surface soilsover 800 ppm in Joplin, MO

EPA ROD on Residential SoilsExcavate soil above 800 ppm PbReplace garden soils above 500 ppm PbProvide loaner HEPA VacsSoil Repository covering mill wasteLong-term Health Education and blood-Pb screeningPhosphate treatment above 500 ppm Pb, if proven effective.

PHOSPHATE TREATMENTWorking HypothesisAddition of phosphoric acid to Pb contaminated Joplin soil will result in formation of chloropyromorphite and reduce the Pb bioavailability and solubility.5 Pb2+ + 3 H2PO4-+ Cl- ----> Pb5(PO4)3Cl + 6H+log K = -25.05

Bioavailability Testing Using Immature Swine Pigs fed soil + feed by hand after fasting15 pigs dosed per soil at 3 different dose rangesPigs dosed for 15 days12 Blood Pb at various times + femur, kidney, liver samples analyzed per pig Bioavailability value combination of tissues, but heavily weighted toward blood-Pb

Study Design I. A. Soil Characterization and Bench Treatment of Smelter Soils I. B. Dosing of Treated and Untreated Bench Soils to Immature Swine to Determine BioavailabilityII. A. Field Treat Soils and Characterize Pb and DistributionII. B. Dosing of Treated and Untreated Field Treated Soils

Study Design cont.

III. A. Incubation of Bench SoilsIII. B. Dosing of Incubated Soils

IV. Dosing of Field Soils Over Time to Pigs

V. Analyze Plant Tissue in Field Plots Over Time

Metal Analysis of Test Materials

DNR5

treatmentDay/pig #1235791215Sum blood Pbactual doseAve.Sum blood Pb per treatmentAve. actual doseResp/dosetreat/Pb acetateSim.RBA reduction using Field #4

215Pb acetate20.5120.5120.59.529.24

244Pb acetate10.51110.5*1622.56

245Pb acetate20.50.5120.50.51827.3

246Pb acetate30.50.521110.59.525.37

249Pb acetate20.50.540.50.50.50.5928.22

219Pb acetate30.52310.523.315.384.28

232Pb acetate20.50.514.12*212.176.51

233Pb acetate30.512222214.585.69

235Pb acetate30.512222214.566.65

237Pb acetate30.523223.3318.884.75

207Pb acetate3223.94.23.75.3731.1253.16

209Pb acetate3.75.46.18.87107.81361.8263.99

222Pb acetate5.33.74.754245.85.457.9224.41

238Pb acetate3.722.53.73.53.645.128.1221.58

243Pb acetate3.83.23.34.84.55.55.24.434.7230.8622.0533333333114.97133333330.1918159309

2010.50%311211211285.04

2200.50%30.523.9122216.472.96

2390.50%30.512122213.578.89

2410.50%311322221676.14

2420.50%20.50.5110.5128.580.95

2080.50%53.25.55.84.64.44.95.438.8272.2

2140.50%4.1235.23.85.44.95.333.7289.24

2270.50%5.24.43.44.75.15.85.47.441.4215.33

2300.50%4.233.24.13.44.83.25.131216.74

2470.50%4.23.84.25.55.15.36.87.542.4211.12

2210.50%8.78.16.77.16.96.77.58.960.6707.79

2230.50%6.35.65.46.55.16.38.39.653.1664.87

2240.50%1076.68.39.211111376.1764.36

2400.50%8.165.98.25.96.17.48.255.8741.04

2480.50%6.63.75.57.65.77.27.79.653.6683.4136.86344.00533333330.10714950160.55860585220.1303038266

2101.00%5.30.512113316.883.04

2251.00%0.5222.1132214.680.13

2261.00%0.50.522123.12.213.378.57

2341.00%10.513.53.422215.476.06

2521.00%0.50.52323121482.75

2041.00%3233.744.74.15.630.1252.95

2051.00%0.533.83.54.14.94.85.329.9256.03

2061.00%123.95.45.66.66.58.139.1259.36

2171.00%124.15.75.555.66.135222.97

2291.00%112334.324.721207.04

2111.00%34.75.95.55.46.36.77.645.1705.6

2121.00%23.23.56.85.765.58.341652.53

2161.00%3.55.15.47.15.26.369.347.9804.55

2181.00%0.523.86.85.96.66.56.838.9767.97

2281.00%4.87.87.67.57.88.77.21162.4656.1230.9666666667345.71133333330.08957376770.46697772850.2729600989

1-5,8 BlPb + AUC all pigs

Sum Blood Pb and AUC per pig 1-5

treatMonthsPig #GroupNom. DoseActual DoseSum blood PbAUC ug/dL-dPb Acetate #1 Lab

PbAc1010212526.87.512.5

PbAc1012112524.97.512.25

PbAc1013112523.41427.25

PbAc10132125268.515.75

PbAc1013812523.85.59

PbAc1010627577.22649.55

PbAc1011027575.719.435.85

PbAc1011327575.424.444.05

PbAc1011527573.424.945.8

PbAc1011727574.222.944.2

PbAc101093225233.363.7120.85

PbAc101373225228.360.3126.05

PbAc101423225203.152.9100.1

PbAc101433225223.948.991.95

PbAc101573225235.355.2

Un1L012447568.618.927.85Untreated #1 Lab

Un1L013547570.117.330.2

Un1L013647581.625.743.05

Un1L015447579.815.329.2

Un1L01564757615.628.4

Un1L01015225219.23875.2

Un1L011452252155296.7

Un1L01305225221.120.238.7

Un1L01535225239.835.465.25

Un1L01555225234.857.4107.2

Un1L01086675708.8110.9235.15

Un1L01126675705.879.4162.45

Un1L01186675603.390.6171.7

Un1L01416675683.382.8155.2

Un1L01586675681.970.8144.8

1%PL011177584.218.836.81% Phosphate #1 lab

1%PL011677573.21221

1%PL01207757922.741.95

1%PL014977573.81324

1%PL015077568.212.519.75

1%PL01038225205.231.155.75

1%PL01048225227.338.972.25

1%PL01228225246.445.675.4

1%PL01238225211.731.260.15

1%PL01298225251.63973.5

1%PL01199675621.354.6114.3

1%PL01279675728.574.6134.85

1%PL01289675695.970131.15

1%PL01469675663.960.7120.25

1%PL01479675676.660.9114.05

Un2F34071759614.729.2Untreated #2 Field

Un2F340917568.815.429.85

Un2F341117581.528.339.65

Un2F341717570.722.446.15

Un2F3451175661528.75

Un2F3418222521340.177

Un2F34272225194.740.977

Un2F34292225270.950.899.5

Un2F34302225227.544.280.8

Un2F34502225243.267.1100.1

Un2F34023675892.875.1113.8

Un2F34243675628.179.5150.85

Un2F34343675604.678.6149.6

Un2F34393675608.381137.85

Un2F34463675707.167.4124.85

0.5%P2F34144758313.624.90.5% P#2 Field

0.5%P2F3423475661733.25

0.5%P2F343147584.921.740.55

0.5%P2F343347571.416.530.75

0.5%P2F344347574.214.734.95

0.5%P2F34015225230.133.282.4

0.5%P2F34035225248.939.972.45

0.5%P2F3412522524033.161.9

0.5%P2F34225225185.233.663.7

0.5%P2F34375225234.453.397.35

0.5%P2F34046675656.365.5126.1

0.5%P2F3420667562560.4115.3

0.5%P2F34386675684.880.1140.3

0.5%P2F34406675729.264.8124.3

0.5%P2F34416675714.779137.25

1%P2F341377586.615.230.351% P #2 Field

1%P2F341977564.11119.75

1%P2F342677573.413.525.25

1%P2F342877586.122.640.2

1%P2F343677575.4914.75

1%P2F3415822521939.171.7

1%P2F3416822522629.258

1%P2F34258225214.332.162.45

1%P2F34328225204.229.959.8

1%P2F34528225287.137.368.2

1%P2F34059675829.360.5114.15

1%P2F34069675732.366.5128.3

1%P2F34089675678.977.1144.35

1%P2F34109675618.962.6124.75

1%P2F34479675580.173.4141.85

PbAc3650612524.5915.5Pb Acetate #3

PbAc3651212529.815.828.7

PbAc3653412524.110.519.25

PbAc3653712525.76.510.25

PbAc3654312523.3813.25

PbAc3650127568.81425.25

PbAc3650827581.226.550.45

PbAc3651427579.110.919.35

PbAc3652327580.823.944.4

PbAc3655227570.920.839.4

PbAc365023225246.655.3107.3

PbAc365033225263.839.573.15

PbAc365323225197.450.597.05

PbAc365423225223.838.275.6

PbAc365483225211.836.370.2

0.5%PI1250547564.214.526.250.5% P Incubated

0.5%PI1250747560.21018.25

0.5%PI1251047572.82037.75

0.5%PI1251747581.424.244.95

0.5%PI1251847575.81321.25

0.5%PI125165225233.43668.9

0.5%PI125305225197.125.246.2

0.5%PI1253652255.5

0.5%PI125415225207.130.759.05

0.5%PI125515225198.344.786

0.5%PI125156675628.559.1107.55

0.5%PI125216675636.858.8108.6

0.5%PI125356675674.874.5139.2

0.5%PI125476675547.365.8122.65

0.5%PI12550667569274.4139.75

1%FeP3F6509775104.4620.942.1Fe+ P #3 Field

1%FeP3F652677582.516.129.4

1%FeP3F652877575.922.642.9

1%FeP3F653977587.519.737.85

1%FeP3F655477573.217.133.05

1%FeP3F65118225213.658.9111.95

1%FeP3F65258225255.253.998.55

1%FeP3F65388225196.236.170.55

1%FeP3F654982257.9

1%FeP3F65538225188.249.193.6

1%FeP3F65139675691.160.5116.9

1%FeP3F65249675671.963114.6

1%FeP3F65279675612.548.186.8

1%FeP3F65409675608.192.5171.25

1%FeP3F6546967573.8134.4

PbAc419601125123.620.645.25Pb Acetate #4

PbAc419608125115.820.246.45

PbAc419616125121.719.142.75

PbAc419636125110.821.849.2

PbAc419648125125.62746.2

PbAc41960627579.623.442.95

PbAc41962327575.121.340.65

PbAc41963327569.319.235.85

PbAc41964027580.623.646.9

PbAc4196422756918.534.25

PbAc4196103225166.545.283.1

PbAc4196173225188.350.291.25

PbAc4196253225191.944.882.85

PbAc4196353225182.743.383.3

PbAc4196413225182.639.773.3

Un4F1960447576.518.735.45Untreated #4 Field

Un4F1960947573.718.135.1

Un4F196134757914.530.5

Un4F1962847576.514.727.85

Un4F1964747567.318.736.35

Un4F196055225245.535.468.75

Un4F19624522522442.179.35

Un4F196345225227.651.7100.3

Un4F196435225223.232.965.45

Un4F196445225202.238.777.15

Un4F196126675636.990.1172.25

Un4F196216675713.572.3142.75

Un4F196466675(pig died)

Un4F196496675623.879.7152.45

Un4F196506675684.992.9175.75

1%P4F1961477568.815.730.051%P #4 Field

1%P4F1962077583.319.138.1

1%P4F1962677581.213.525.25

1%P4F1962777568.318.132.65

1%P4F1965177576.815.529.75

1%P4F196078225212.631.860.85

1%P4F196198225229.524.345.5

1%P4F196298225211.639.479.7

1%P4F196328225234.73055.3

1%P4F19639822523327.754.4

1%P4F196029675670.571.8140.4

1%P4F196229675680.548.591.7

1%P4F196319675709.768133.35

1%P4F196379675629.769.4131.3

1%P4F196529675673.558110.05

PbAc53221512529.249.518.5PbAcetate #5

PbAc53224412522.56612.25

PbAc53224512527.3813.75

PbAc53224612525.379.516.75

PbAc53224912528.22914.5

PbAc53221927584.2815.327.2

PbAc53223227576.5112.127.7

PbAc53223327585.6914.527.5

PbAc53223527566.6514.528

PbAc53223727584.7518.836.15

PbAc5322073225253.1631.160.1

PbAc5322093225263.9961.8118

PbAc5322223225224.4157.972.05

PbAc5322383225221.5828.152.75

PbAc5322433225230.8634.766.75

0.5%5F3220147585.041221.750.5% #5 Field

0.5%5F3222047572.9616.430.55

0.5%5F3223947578.8913.526

0.5%5F3224147576.141629.75

0.5%5F3224247580.958.514.75

0.5%5F322085225272.238.871.3

0.5%5F322145225289.2433.765

0.5%5F322275225215.3341.476.35

0.5%5F322305225216.743156.5

0.5%5F322475225211.1242.480.65

0.5%5F322216675707.7960.6107.7

0.5%5F322236675664.8753.198.5

0.5%5F322246675764.3676.1142.15

0.5%5F322406675741.0455.8101.15

0.5%5F322486675683.4153.6100.9

1%5F3221077583.0416.824.751% #5 Field

1%5F3222577580.1314.628.45

1%5F3222677578.5713.327.85

1%5F3223477576.0615.431.05

1%5F3225277582.751427.75

1%5F322048225252.9530.157.6

1%5F322058225256.0329.959.25

1%5F322068225259.3639.179.25

1%5F322178225222.973570.25

1%5F322298225207.042141.05

1%5F322119675705.645.185.5

1%5F322129675652.534179.65

1%5F322169675804.5547.989.25

1%5F322189675767.9738.980.05

1%5F322289675656.1262.4114.7

PbAc#87820312522.327.715.23Pb Acetate #8

PbAc#87820412527.145.18.36

PbAc#87820512528.335.28.57

PbAc#87823912522.949.217.49

PbAc#87825012525.416.912.79

PbAc#8782082757816.830.93

PbAc#87820927571.1515.329.99

PbAc#87821327573.0415.429.27

PbAc#87822327572.8717.933.66

PbAc#87822527528.08

PbAc#8782013225247.1340.873.7

PbAc#8782223225233.3244.381.42

PbAc#8782353225250.2933.862.32

PbAc#8782573225232.0534.769.69

PbAc#878262322519041.477.46

Un8F7821147585.5111.823.73Untreated #8

Un8F7821247574.5523.346.07

Un8F7821447577.8425.949.93

Un8F7824447582.3513.527.38

Un8F7825147567.5716.430.27

Un8F782295225217.3521.242.12

Un8F782305225210.93057.59

Un8F782415225224.6442.781.19

Un8F782605225249.8835.467.56

Un8F782645225264.5340.174.12

Un8F782216675685.8576.3139.79

Un8F782526675673.0161.6115.87

Un8F782556675783.572137.85

Un8F782616675646.4761.5117.41

Un8F782676675673.2957108.45

1%P8 F7820677580.757.813.751%PA #8 Field

1%P8 F7822677579.011120.44

1%P8 F7823277572.815.731.8

1%P8 F7825477577.8213.726.73

1%P8 F7826677576.81918.16

1%P8 F7821782252272961.69

1%P8 F782408225248.2322.244.76

1%P8 F782488225183.138.716.47

1%P8 F782498225265.7521.644.09

1%P8 F782598225241.7825.450.15

1%P8 F782109675743.7150.496.51

1%P8 F782349675712.1935.971.21

1%P8 F782389675737.1740.880.51

1%P8 F782639675594.4341.182.92

1%P8 F782699675668.1132.966.89

Blood Pb Response vs.Dose

0.2549965260.14936657010.1193382060.19181593090.1324434613

0.22142299240.1448772850.11636312160.19181593093

0.23252633140.14935421160.11324941730.107149501618

0.19181593090.11733542740.08957376770.118842364178

0.18710411120.07291327670.1271083447

Pb Acetate

Untreated

1% PA

0.5% PA

1%TSP + 1%Fe

Time in Months

Blood Pb Response/Dose

Blood Pb Response/Dose Over Time

Sum Blood Pb vs Dose

0.2549965260.14936657010.11933820600

00.1448772850.11636312160.12710834470

0.2214229924000.11884236410.1324434613

0.23252633140.14935421160.1132494173018

0.191815930900.08957376770.107149501632

0.18710411120.11733542740.0729132767078

Pb Acetate

Untreated

1%PA

0.50%

Fe + TSP

Time in Months

Ave. Sum Blood Pb/Ave. Actual Dose

Sum of Blood Lead vs. Dose Over Time

DNR 1-5,8 Summary

Response/doseResponse/dose

TreatmentTime in MonthsAve.Sum bloodPbAve. actual doseResponse/dosetreat/Pb acetate% Reduction vs.control

PbAc#1027.62108.30.2550

Untreated#1048.69326.00.14940.5858

1%PALab039.04327.10.11930.468020.10

Untreated#2348.03331.50.14490.5681

0.5%Field#2341.76328.50.12710.498512.26(PbAc#1)

1%Field#2338.60331.70.11640.456319.68(PbAc#1)

PbAc#3624.38110.10.2214

0.5%LabInc1237.09312.10.11880.53678.38(Control #1)

Fe+TSP642.68322.30.13240.5981-5.29(control #2)

PbAc#41829.19125.50.2325

Untreated#41844.32296.80.14940.6423

1%Field#41836.72324.20.11320.487024.1724.1739378455

PbAc#53222.05115.00.1918

0.5%Field#53236.86344.00.10710.558613.03(Control #4)

1%Field#53230.97345.70.08960.467027.30(Control #4)

PbAc#87821.04112.40.1871

Untreated #87839.25334.50.11730.6271

1% Field 787824.35333.90.07290.389737.86(Control #8)

REORGANIZED TO FOOL CHART WIZARD

Response/doseResponse/dose

TreatmentTime in MonthsResponse/doseAve.Sum bloodPbAve. actual dosetreat/Pb acetate% Reduction vs.control

PbAc#10.50.255027.62108.32

PbAc#230.0000Was not run

PbAc#360.221424.38110.11

PbAc#4180.232529.19125.55

PbAc#5320.191822.05114.97

PbAc#8780.187121.04112.43

Untreated#10.50.149448.69325.950.5858

Untreated#230.144948.03331.540.5681

Untreated #360.0000Was not run

Untreated#4180.149444.32296.750.6423

Untreated #5320.0000Was not run

Untreated #8780.117339.25334.480.6271

1%PALab0.50.119339.04327.140.468020.10

1%Field#230.116438.60331.720.456319.68(PbAc#1)

1%Field #360.0000Was not run

1%Field#4180.113236.72324.240.487024.17(Control #4)

1%Field#5320.089630.97345.710.467027.30(Control #4)

1% Field #8780.072924.35333.910.389737.86(Control #8)

0.5% Lab#10.50.0000

0.5%Field#230.127141.76328.540.498512.26(PbAc#1)

0.5%LabInc60.118837.09312.120.53678.38(Control #1)

0.5%Field#4180.0000Was not run

0.5%Field#5320.107136.86344.010.558613.03(Control #4)

0.5%Field#8780.0000Was not run

Fe+TSP #10.50.0000Was not run

Fe+TSP #230.0000Was not run

Fe+TSP#360.132442.68322.250.5981-5.29(control #2)

18

32

78

DNR8 6.5yrs

NEED TO ADD AUC THEN COMBINE with #8

Blood Lead ug/dL by Day

treatmentpig #Group01235791215Sum blood Pbactual doseAve.Sum blood Pb per treatmentAve. actual doseAUCResp/dosetreat/Pb acetateSim.RBA reduction

Lead acetate20310.50.50.50.50.50.50.52.61.67.722.3215.23

Lead acetate20410.50.50.50.50.50.50.50.51.15.127.148.36

Lead acetate20510.50.50.50.50.50.50.50.51.25.228.338.57

Lead acetate23910.50.51.40.50.50.52.81.31.29.222.9417.49

Lead acetate25010.50.50.50.50.51.20.51.41.36.925.4112.79

Lead acetate20820.50.52.61.72.21.812.93.616.87830.93

Lead acetate20920.50.50.51.11.41.932.24.215.371.1529.99

Lead acetate21320.50.51.30.51.21.31.93.15.115.473.0429.27

Lead acetate22320.50.52.71.122.42.22.93.617.972.8733.66

Lead acetate225228.08

Lead acetate20130.50.57.54.94.14.45.24.98.840.8247.1373.7

Lead acetate22230.52.95.64.44.16.26.25.68.844.3233.3281.42

Lead acetate23531.83.62.32.92.83.54.95.56.533.8250.2962.32

Lead acetate25730.512.62.23.24.55.47.28.134.7232.0569.69

Lead acetate26230.53.25.13.24.64.96.367.641.419021.0357142857112.427857142977.460.1871041112

Untreated 78 mo.21140.50.50.50.51.11.31.43311.885.5123.73

Untreated 78 mo.21240.50.522.331.93.44.7523.374.5546.07

Untreated 78 mo.21440.51.42.42.43.12.244.65.325.977.8449.93

Untreated 78 mo.24440.50.50.50.51.62.32.22.82.613.582.3527.38

Untreated 78 mo.25140.50.521.11.42.61.52.64.216.467.5730.27

Untreated 78 mo.22950.50.51.922.42.42.94.54.121.2217.3542.12

Untreated 78 mo.23050.51.43.72.12.83.94.45.16.130210.957.59

Untreated 78 mo.24150.52.353.94.14.55.77.49.342.7224.6481.19

Untreated 78 mo.26050.53.13.52.33.545.95.86.835.4249.8867.56

Untreated 78 mo.26450.52.45.145.72.94.36.38.940.1264.5374.12

Untreated 78 mo.22160.58.57.87.97.67.210.810.515.576.3685.85139.79

Untreated 78 mo.25260.55.874.15.189.29.91261.6673.01115.87

Untreated 78 mo.25560.55.47.56.57.28.311.311.913.472783.5137.85

Untreated 78 mo.26160.53.86.45.86.77.79.39.611.761.5646.47117.41

Untreated 78 mo.26760.54.66.33.147.67.610.412.957673.2939.2466666667334.4826666667108.450.1173354274

1%PA 78 mo.20670.50.50.50.51.11.21.10.51.97.880.7513.75

1%PA 78 mo.22670.50.51.20.50.51.11.623.11179.0120.44

1%PA 78 mo.23270.50.51.40.50.51.52.34.34.215.772.831.8

1%PA 78 mo.25470.50.51.40.51.40.51.63.3413.777.8226.73

1%PA 78 mo.26670.50.50.50.510.50.52.92.1976.8118.16

1%PA 78 mo.21780.50.50.50.5244.97.68.52922761.69

1%PA 78 mo.24080.50.51.51.61.9344.2522.2248.2344.76

1%PA 78 mo.24880.50.50.50.50.50.51.31.92.58.7183.1316.47

1%PA 78 mo.24980.50.51.61.11.42.73.45.15.321.6265.7544.09

1%PA 78 mo.25980.50.52.11.52.53.344.86.225.4241.7850.15

1%PA 78 mo.21090.52.654.14.36.67.78.211.450.4743.7196.51

1%PA 78 mo.23490.50.53.12.83.25.54.47.28.735.9712.1971.21

1%PA 78 mo.23890.52.92.94.53.74.86.57.27.840.8737.1780.51

1%PA 78 mo.26390.50.53.23.84.15.66.48.18.941.1594.4382.92

1%PA 78 mo.26990.50.51.81.62.95.54.27.28.732.9668.1124.3466666667333.912666666766.890.0729132767

Control2070.50.50.50.50.50.50.50.50.57.5

Control2580.50.50.50.50.50.50.50.50.57.5

Control2680.50.50.50.50.50.50.50.50.57.5

Sheet1

Percent change in plant-metal concentrations with treatment vs. untreated soil for the Jasper County site.

% Change vs. Untreated

TreatmentsZnCdPb

Sep-971%PA5.64Na-73.85

Fe+TSP148.7Na100.8

May-981%PA-21.549.67-60.65

Fe+TSP-8.4930.4-40.12

Oct-981%PA-3.79-25.93-71.50**

Fe+TSP-15.36-44.11-32.04*

0.5%PA98.55-61.61*

Oct-991%PA-42.26-69.0435.73

Fe+TSP-60.43-77.49-48.57

Sep-001%PA5.6-48.93-60.23

Fe+TSP-52.28-39.29-34.06

Mean all dates1%PA-34.29-43.44-48.5

Fe+TSP-46.25-27.44-36.82

na not analyzed.

* significant at the 0.05 probability level

** significant at the 0.01 probability level

-60.23% value is from only one soil and plant sample.

Sheet2

Sheet3

Plans for ImplementationIntend to implement at ~500 residential properties in Jasper CountyWill apply to properties with soil between 400 - 800 ppm PbShould take 3-4 days per propertyCosts estimated between 1/2-1/3 soil removal= $4000-$5000/yardMDNR hopes to implement as part of state match

Former and Abandoned Pb/Zn Mine Demonstration Project

Project Description

Jasper County SiteRevegetation Using Biosolids Enhanced WetlandClose mine shafts

Barren Chat & Mill Foundations

Barren Chat & Tailings

Organic AmendmentsSelected organic amendments from local sources were utilized.Mushroom compostMizzou DooComposted chicken litterUncomposted turkey litterCity of Springfield composted sewage sludgeTopsoilSoil repository

Phosphate TreatmentPhosphate in organic mattermushroom compost 0.36%composted chicken litter 1.73%turkey house litter 1-2%composted sewage sludge 1.9%Inorganic phosphate - added 2500-5000 ppm P as TSP to highly contaminated areas

Organic Matter Application

Upland Site 1 Year Post Reclamation

Center Creek Site 6 Months Post Reclamation

Pre & Post Treatment SamplingStorm waterplant tissuesoils/sedimentgroundwater

EPA study on impacts of Biosolids application in Jasper CountyMetals in worms in biosolids lower than those found in control

Biosolids application does not pose ecological risk

A happier duck!!!

Lead Exposure study got things rolling.Expansion of site into town.Talk about IEUBK and very low soil levels.Excavation expensive and intrusive.

$8,000-20,000/per yard.Alternative technology based on phosphoric acid transformation of Pb species into chloropyromorphite.Walk through quicklyWe also monitored plant tissue and saw significant declines in tissue metal concentrations, especially Pb

Although some inconsistances, especially with Zn and Cd.

Investigating P treat as part of an ecological remedy.Alternative remedy to mining impacts.Money used for a variety of things.

Last 3 are innovative.Organic amendments to stabilize and revegetate barren areas.

2 Birds with one stone. Poultry industry.One benefit is P in organic form.Sampling conducted to determine this, inconclusive.Water quality looked encouraging initially.

Something happened upgradient. Still below upgradient results.

Plant data inconclusive.

Ecological Risk

Teal in tailings impoundment.Wetland with tailings excavated and mushroom compost placed in bottom.

Question: Is this duck still being presented with an unacceptable risk.