olan et al, 1998 United tates Geological uvey ational Ambient ate Quality Assessment Pogam Risk of Goundwate Contamination HA Figue 1
12.0 10.0 8.0 6.0 4.0 HATIG 1 HATIG 3 HATIG 4 HATIG 5 HATIG 6 HATIG 7 2.0 0.0 1/1/93 1/1/94 1/1/95 1/1/96 12/31/96 12/31/97 12/31/98 12/31/99 12/30/00 12/30/01 12/30/02 12/30/03 ample Date Hastings Municipal ells itate Results 1993-2003 HA Figue 2
DAKOTA COUTY Mississippi Rive ROMOUT IIGR TOHIP HATIG Vemillion Rive VRMILLIO Municipal Boundaies tudy Aea, howing ection Lines VRMILLIO TOHIP MARHA TOHIP RAVA TOHIP 3 0 3 6 9 Miles itate tudy Aea HA Figue 3
tudy Aea Municipal Bounday 5 0 5 10 Miles 2000 Digital Othophoto HA Figue 4
tudy Aea Municipal Boundaies Land Cove Classification Buildings/Pavement 51%-75% Impevious Up to 50% Impevious 26%-50% Impevious 11%-25% Impevious 4%-10% Impevious Foest/oodland Gassland/Paiie Mash hubland Planted/cultivated vegetation Copland ate 2 0 2 4 6 Miles 2000 Land Cove Classification HA Figue 5
tudy Aea Municipal Boundaies Zoning Residential Business/Commecial Industial Agicultue Planned Development Public/Paks Misc ate 4 0 4 8 Miles Zoning HA Figue 6
eptic ystems Built o maintained within the past 3 yeas (1998-2002) Built o maintained 3 to 10 yeas ago (1992-1998) Built o maintained moe than 10 yeas ago o infomation on septic system maintenance o constuction tudy Aea Metopolitan Uban evices 1998 Metopolitan Uban evices, 2040 (est.) Municipal Boundaies 4 0 4 8 Miles Municipal evices HA Figue 7
tudy Aea Municipal Boundaies Bedock Geology Platteville & Glenwood Fomations t. Pete andstone Paiie du Chien Limestone Jodan andstone Fanconia andstone/hale 5 0 5 10 Miles Bedock Geology HA Figue 8
tudy Aea Municipal Boundaies Depth to Bedock Less than 50 51-100 101-150 151-200 201-250 251-300 301-350 351-400 401-500 Moe than 500 5 0 5 10 Miles Depth to Bedock HA Figue 9
4 0 4 8 Miles tudy Aea Municipal Boundaies Bedock Geology Platteville & Glenwood Fomations t. Pete andstone Paiie du Chien Limestone Jodan andstone Fanconia andstone/hale uficial (Quatenay) Geology Floodplain Alluvium Colluvium lopewash and Lowe Rive Teace Middle Rive Teace Uppe Rive Teace Des Moines/upeio Mixed Outwash upeio Outwash Rive Falls (Pe-isconsinan) Dift "Old Gay" (Pe-isconsinan) Till Bedock ate uficial (Quatenay) Geology HA Figue 10
oils tudy Aea Municipal Boundaies ilty Clay Clay Clay Loam Loam andy Loam and Unknown ate 5 0 5 10 Miles Geneal oil Type HA Figue 11
tudy Aea Municipal Boundaies Pollution ensivity: ate Tansit fom uface to Aquife Vey High -- Hous to Months High -- eeks to yeas High-Modeate -- Yeas to a decade Modeate -- eveal yeas to decades ate 3 0 3 6 Miles Goundwate ensitivity to Pollution HA Figue 12
Known inkholes Falls of the Vemillion Vemillion Rive tudy Aea Majo atesheds of Dakota County Mississippi Rive Minnesota Rive Vemillion Rive Cannon Rive Cedit Rive Vemillion Rive ateshed HA Figue 13
$Z Municipal ells itate Results 0-1 Backgound 1-3 howing Human Impact 3-10 levated 10-40 xceeds Dinking ate tandad tudy Aea Municipal Bounday $Z $Z $Z $Z $Z $Z $Z $Z 5 0 5 10 Miles itate Results HA Figue 14
xceeds Dinking ate tandad (10 ppm o moe) 26% Backgound (0-1 ppm) 41% levated (3-10 ppm) 26% howing Human Impact (1-3 ppm) 7% itate Results HA Figue 15
itate Results 0-1 Backgound 1-3 howing Human Impact 3-10 levated 10-40 xceeds Dinking ate tandad oils ilty Clay Clay Clay Loam Loam andy Loam and Unknown ate High itate Aeas High itate Aeas and oil Type HA Figue 16
eithe 0% Pesticides Only 11% Caffeine Only 30% Caffeine & Pesticides 59% Pesticides wee detected in 70% of wells sampled Caffeine was detected in 89% of wells sampled Caffeine and Pesticide Detections HA Figue 17
G913: ea ive, shallow G914: Away fom ive, shallow G915: ea ive, deep HA Monitoing ells tudy Aea Municipal Boundaies Bedock Geology Platteville & Glenwood Fomations t. Pete andstone Paiie du Chien Limestone Jodan andstone Fanconia andstone/hale G910: ea ive, deep G912: Away fom ive, deep G907: ea ive, shallow G908: Away fom ive, shallow G909: ea ive, deep 5 0 5 10 Miles Monitoing ell Locations HA Figue 18
824.24 uface levation 824.45 uface levation Loam Oganic and 810.0 and 790.0 G908 819.16 ft L Clay G907 819.12 ft L Vemillion Rive 901 levation (msl) 770.0 750.0 and G909 817.26 ft L 730.0 710.0 2000-2002 itate Results (mg/l Location ID Range Median G908 0-0.2 0.1 (n = 15) G907 0-0.2 0.1 (n = 15) G909 0-0.2 0.0 (n = 15) 901 3.6-11.0 7.9 (n = 16) 690.0 178025 178075 178125 178175 178225 178275 178325 178375 178425 GP Location: County Coodinate ystem othing (ft) Upsteam Monitoing ells Locations, tatic ate Levels and itate Results eptembe 2000 Decembe 2002 HA Figue 19
816.20 uface levation 809.61 uface levation 810.0 Loam 790.0 Fine and and Vemillion Rive Vey Fine and ilty and 902 770.0 Limestone/and levation (msl) 750.0 and & Rock and 730.0 710.0 2000-2002 itate Results (mg/l Location ID Range Median G912 0.1-32.0 19.0 (n = 15) G910 0.5-7.1 4.4 (n = 15) 902 3.4-11 8.4 (n = 15) G912 747.84 ft L Fine and G910 747.38 ft L 690.0 185550 185600 185650 185700 185750 185800 185850 185900 GP Location: County Coodinate ystem othing (ft) Monitoing ells ove Buied Bedock Valley Locations, tatic ate Levels, and itate Results Octobe 2000 Decembe 2002 HA Figue 20
810.0 795.25 uface levation 794.12 uface levation levation (msl) 790.0 770.0 750.0 730.0 710.0 690.0 G914 747.25 ft L Fine and Fine and Loam and Fine ilty and Fine ilty and G915 747.18 ft L G913 750.23 ft L and & Rock Vey Fine and 190350 190400 190450 190500 190550 190600 190650 190700 GP Location: County Coodinate ystem othing (ft) Fine and Vemillion Rive 903 2000-2002 itate Results (mg/l Location ID Range Median G914 0.2-7.5 4.4 (n = 15) G915 0.1-7.2 5.79 (n = 14) G913 1.95-8.9 5.9 (n = 15) 903 3.5-11 7.35 (n = 16) L Key: Mach 2001 Apil 2001 May 2001 Downsteam Monitoing ells Locations, tatic ate Levels, and itate Results Octobe 2000 Decembe 2002 HA Figue 21
ate Table (est.) Rive levation (est.) uface levation (est.) 800 750 City of Vemillion uface lev. ~ 830 ft. msl ate Table ~ 825 ft. msl Upsteam Monitoing ells uface lev. ~ 825 ft. msl ate Table ~ 820 ft. msl Buied Bedock Valley Monitoing ells uface lev. ~ 810 ft. msl ate Table ~ 750 ft. msl Downsteam Monitoing ells uface lev. ~ 795 ft. msl ate Table ~ 750 ft. msl 700 ~ 1 mi. ~ 3 mi. ~ 2 mi. ~ 1 mi. Below Falls in Hastings uface lev. ~ 730 ft. msl ate Table ~ 700 ft. msl Changes in ate Table vs. Vemillion Rive Between Vemillion and Hastings HA Figue 22
$T $T 804 807 808 801 $T$T mpie TP &V VR20-6 VR15.6 $T 802 &V Hampton TP Vemillion TP 901 803 &V %U$T G 907 G 908 G 909 903 G 914 G 913 %U 902 G 915 %U G 910 G 912 5 0 5 10 Miles &V HA Monitoing ells 3-10 mg/l 1-3 mg/l 0-1 mg/l CD Monitoing ites $T $T %U Met Council Monitoing ites tudy Aea astewate Teatment Plants 10 mg/l o geate 10 mg/l o geate 3-10 mg/l $T 1-3 mg/l $T 0-1 mg/l HA uface ate Monitoing 1-3 mg/l 3-10 mg/l Vemillion Rive 2000-2002 itate Results HA Figue 23
Upsteam to Downsteam Location ID Agency Desciption uface ate o Goundwate (/G) Data Collection Model 2000-2002 itate (mg/l) Range 2000-2002 itate (mg/l) Median Median Rank (itate) ince Feb. 2000 -- low flow and 1 804 CD Vemillion Rive at 220th t event sampling 0.93-3.58 1.72 (n = 43) 6 2 807 CD Vemillion Rive at Denmak Ave. ince Feb. 2000 -- low flow and event sampling 0.78-3.54 2.07 (n = 43) 8 3 808 CD oth Ceek at Hwy. 3 ince Feb. 2000 -- low flow and event sampling 0.25-4.96 1.06 (n = 43) 4 4 801 CD oth/middle Ceek at Hwy. 3 ince Feb. 2000 -- low flow and event sampling 0.45-4.8 1.35 (n = 43) 5 5 VR20.6 Met Council Mile 20.6, upsteam of TP ince 1977 -- Bi-weekly sampling 0.08-8.26 1.94 (n = 69) (1979-2001 M edian = 1.82) 7 5.17 (n = 69) (1977-2001 M edian = 3.86) 12 6 VR15.6 Met Council Mile 15.6, downsteam of TP ince 1977 -- Bi-weekly sampling 0.08-14.2 ince Feb. 2000 -- low flow and 7 802 CD outh Banch at 200th t. event sampling 1.4-7.8 5.0 (n = 43) 11 ince Feb. 2000 -- low flow and 8 803 CD Vemillion Rive at Goodwin Ave event sampling 0.89-9.1 5.76 (n = 43) 13 ince ov. 2000 -- monthly 9 901 GP Vemillion Rive at Goodwin Ave sampling 3.6-11.0 7.9 (n = 16) 17 Deep monitoing well nea ince ov. 2000 -- monthly 10 G909 GP Vemillion Rive at Goodwin Ave G sampling 0-0.2 0.0 (n = 15) 1 hallow monitoing well nea ince ov. 2000 -- monthly 11 G907 GP Vemillion Rive at Goodwin G sampling 0-0.2 0.1 (n = 15) 2.5 hallow monitoing well appox. 100 ft. fom Vemillion Rive at ince ov. 2000 -- monthly 12 G908 GP Goodwin Avenue G sampling 0-0.2 0.1 (n = 15) 2.5 13 902 GP Vemillion Rive ove buied bedock valley ince ov. 2000 -- monthly sampling 3.4-11 8.4 (n = 15) 18 14 G910 GP Monitoing well nea ive ove buied bedock valley ince ov. 2000 -- monthly G sampling 0.5-7.1 4.4 (n = 15) 9.5 15 G912 GP Monitoing well appox. 200 ft fom ive ove buied bedock valley (beside confield) ince ov. 2000 -- monthly G sampling 0.1-32.0 19.0 (n = 15) 19 16 903 GP Vemillion Rive in Hastings Pak ince ov. 2000 -- monthly sampling 3.5-11 7.35 (n = 16) 16 17 G913 GP Monitoing well nea ive in Hastings Pak ince ov. 2000 -- monthly G sampling 1.95-8.9 5.9 (n = 15) 15 18 G915 GP Deep monitoing well nea ive in Hastings Pak ince ov. 2000 -- monthly G sampling 0.1-7.2 5.79 (n = 14) 14 19 G914 GP Monitoing well appox. 100 ft. fom ive in Hastings Pak ince ov. 2000 -- monthly G sampling 0.2-7.5 4.4 (n = 15) 9.5 Vemillion Rive 2000-2002 itate Results HA Figue 24
levation of ate Table (feet msl) HA Monitoing ells HA Monitoing ells Potentiometic uface (ate Table) Bedock Geology Platteville & Glenwood Fomations t. Pete andstone Paiie du Chien Limestone Jodan andstone Fanconia andstone/hale 750 750 740 720 700 ate Table levation (feet msl) Dakota County Geologic Atlas 820 760 740 780 800 820 840 5 0 5 10 Miles ate Table: HA Monitoing ell Data compaed to Dakota County Geologic Atlas Piezometic uface HA Figue 25
Bdk_04contou.shp 1000-1100 900-1000 800-900 700-800 600-700 500-600 400-500 levation of Bedock (feet msl) 5 0 5 10 Miles Bedock levation Tend uface Least quaed o Fit HA Figue 26
Bdk_05contou.shp 1000-1100 900-1000 800-900 700-800 600-700 500-600 400-500 levation of Bedock (feet msl) 5 0 5 10 Miles Bedock levation Tend uface xact Fit HA Figue 27
Aquife Thickness (20 foot intevals) Opc_th02contous.shp 280 260 240 220 200 180 160 5 0 5 10 Miles Thickness of the Paiie du Chien Goup (Ignoing Quatenay osion) HA Figue 28
Aquife Cjdn_th05contou.shp Thickness (20 foot intevals) 110 100 90 80 70 5 0 5 10 Miles Thickness of the Jodan Aquife (Ignoing Quatenay osion) HA Figue 29
levation of Bottom of Aquife (feet Cj_bot10contou.shp msl) 400 420 440 460 480 500 520 540 560 580 600 620 640 660 680 700 5 0 5 10 Miles Base of the Jodan Aquife (Ignoing Quatenay osion) HA Figue 30
D-1 MIR_T_PTR-2 Model Polygon ID's MR_JCT MR_BV_1 MR_AVAG D-7 MR_BV_2 D-3 D-4 D-5 D-2 D-6 D-BV_1 MIR P HAKA H2D-8 D-9 -BV_1-2 -3 -LAK_1 -LAK_2 D-10-6 -7 D-13 D-14 D-15 MIR_HAT_LOR3 D-17 D-18 MIR_RDIG_M G-1 RI-2A G-2 G-3 RI-3 5 0 5 10 15 Miles Goundwate Model: Polygon IDs 1 HA Figue 31
D-BV_2 MIR_PRIG_LAK Model Polygon ID's HAT_1HI MIR_HAT_LOR1 D-10 PX1 D-BV_3 T1 HAT_1LO MIR_HAT_LOR2 X7 HAT_2 PX3 D-BV_4 D-BV-V2 D-BV_5 D-15 D_BV_V1 D-19 D-22 D-21 D-16 D-BV_6 MIR_HAT_LOR3 D_20 D-23 D-26 D-25 G-1 D-18 5 0 5 Miles Goundwate Model: Polygon IDs 2 HA Figue 32
Appoximate ffective Aquife Base (feet ML) Aq_polygon.shp 605-637 564-604 547-563 526-546 503-525 471-502 446-470 417-445 5 0 5 10 15 Miles Goundwate Model: Appoximate ffective Aquife Base HA Figue 33
Aquife Thickness (feet) Aq_polygon.shp 328 Unconfined 5 0 5 10 15 Miles Goundwate Model: Aquife Thickness HA Figue 34
Aquife Pemeability (ft/day) Aq_polygon.shp 2809.85 745.385 468.38 267.096 231.378 128.409 113.671 112.226 65.494 64.286 63.813 51.181 31.496 5 0 5 10 15 Miles Goundwate Model: Aquife Pemeability HA Figue 35
Infiltation and xfiltation at the Top (inches/yea) Vael_top_poly.shp -41.8 - -24-24 - -12-12 - -6-6 - -2-2 - 2 2-6 6-12 12-21.58 egative = infiltation Positive = exfiltation 5 0 5 10 15 Miles Goundwate Model: Infiltation & xfiltation Rates at the Top of the Aquife HA Figue 36
Leakage at the Bottom (inches/yea) Bottom Leakage (positive 14.39 10 7.19-0.15-0.72-0.74-2.59-10.79-28.78-57.56-71.95 egative = downwad Positive = upwad 5 0 5 10 15 Miles Goundwate Model: Leakage at the Bottom of the Aquife HA Figue 37
Line lements fo Rives ting_lines.shp Dischage pecified Head pecified 5 0 5 10 15 Miles Goundwate Model: Line lements fo Rives HA Figue 38
Piezometic Piezometic Contous Contous (feet msl) 680 740 700 760 720 740 760 700 780 700 720 740 760 780 800 820 840 860 5 0 5 Miles Goundwate Model: Piezometic Contous HA Figue 39 800 820 840 720 860 700 880 700 720 740 760 780 800 820 840 860 840 840 860 900
HA Figue 40 Goundwate Model: Residuals to Obsevation Heads 740 Chkhead_hans.dbf 40-59.93 20-40 10-20 5-10 -5-5 -10 - -5-20 - -10-40 - -20-59.74 - -40 0 1 2 3 4 5 Miles Model Residuals Pedicted - Obseved (feet)
HA Figue 41 Goundwate Model: stimated Flow Paths to HA ells 0 1 2 3 4 5 Miles ell itate Concentation (ppm) 23-40 16-23 11-16 6.7-11 3.5-6.7 1.1-3.5 0-1.1 Path line by Time of Tavel (days) -36500 - -31289-31288 - -26078-26077 - -20866-20865 - -15655-15654 - -10443-10442 - -5232-5231 - -20