Loading...
MPCA Groundwater test results MAy 2012Minnesota Pollution Control Agency 520 Lafayette Road North I St. Paul, Minnesota 55155 -4194 1 651- 296 -6300 800 - 657 -3864 1 651- 282 -5332 TTY I www.pca.state.mn.us I Equal Opportunity Employer May 29, 2012 City of Cottage Grove: Attn: Jennifer Levitt - City Engineer 7516 80th Street South Cottage Grove, MN 55016 Well Number: 778334 Dear City of Cottage Grove: Attn: Jennifer Levitt - City Engineer: Thank you for participating in Minnesota's Ambient Groundwater Monitoring Network by allowing us to sample your well. Results from your well, along with hundreds of others, allow us to assess the current quality of Minnesota's groundwater and quantify any trends in groundwater quality. The enclosed report summarizes results from sampling performed in 2010 and 2011. There will be one report if your well was sampled just once and two reports if it was sampled in both these years. The information at the top of the report includes the unique identification number for your well assigned by the Minnesota Department of Health (MDH) and the sample collection date. Water samples from your well were analyzed to determine concentrations of 101 substances, including 68 volatile organic chemicals (VOCs). All samples were collected prior to any water treatment by devices such as water softeners, iron removal systems, or chlorinators. Some of the analyzed substances occur naturally in ground water while others, like VOCs, do not. The enclosed report has four columns of information. The first two columns list the chemical name and a unique identification number assigned for each chemical by the American Chemical Society. The third column shows the concentration of the chemical(s) detected in your well and the fourth column lists the units of concentration for each particular chemical. Some concentrations may have been less than the amount which can be detected by the laboratory's testing methods. In these cases, the concentration begins with a "< ". Concentrations are listed in either milligrams per liter (mg /L) or micrograms per liter (ug /L). Milligrams per -liter means that for every liter of water, one milligram of the substance was found in your well water. Similarly, micrograms per -liter means that for every liter of water, one microgram of the substance was found in your well water. MDH maintains health -based standards for many of the substances sampled. The easiest way to view these standards is online at http: / /www.health. state. mn. us /divs /eh /risk /guidance /gw /table.htmi The laboratory analysis did not include a measure of bacterial contamination. If you suspect your well may be impacted by bacteria, contact your local or county health department for assistance. City of Cottage Grove: Attn: Jennifer Levitt - City Engineer Page 2 May 29, 2012 Thank you again for your continued participation. We will contact you at least one week in advance to coordinate sampling of your well in the summer of 2012. Your continued cooperation in the network allows us to gain important information about Minnesota's groundwater quality, which supplies drinking water to more than three - fourths of Minnesotans. Please contact us at the telephone numbers or email addresses listed below, or the MPCA's toll free number (1- 800 - 657 -3864) if we can provide further information. Sincerely, Sharon Kroening Research Scientist Water Monitoring Section Environmental Analysis and Outcomes Division David Duffey Hydrologist Water Monitoring Section Environmental Analysis and Outcomes Division SK /DD:sth Ambient Groundwater Monitoring Minnesota Pollution Network Data Report Control Agency Minnesota Unique Well Number: 778334 Sample Date: 05/24/2011 CHEMICAL CAS NUMBER RESULT UNIT Iron 7439 -89 -6 20.9 ug /I Magnesium 7439 -95 -4 27 mg /I Potassium 7440 -09 -7 4.13 mg /I Sodium 7440 -23 -5 9.55 - mg /I Calcium 7440 -70 -2 110 mg /I Bromide 24959 -67 -9 0.0418 mg /I Chloride 16887 -00 -6 57.4 mg /I Sulfate 14808 -79 -8 29.1 mg /I Ammonia - nitrogen AMMONIA -N < 0.05 mg /I Kjeldahl nitrogen N -KJEL 0.31 mg /I Inorganic nitrogen (nitrate and nitrite) NO2NO3 8.9 mg /I Phosphorus 7723 -14 -0 0.023 mg /I 1,2,3- Trichloropropane 96 -18 -4 < 0.5 ug /I tert- Butylbenzene 98 -06 -6 < 0.5 ug /I Cumene 98 -82 -8 < 0.5 ug /I p- Cymene 99 -87 -6 < 0.5 ug /I Ethylbenzene 100 -41 -4 0.9 ug /I Styrene 100 -42 -5 < 0.5 ug /I cis -1,3- Dichloropropene 10061 -01 -5 < 0.2 ug /I trans -1,3- Dichloropropene 10061 -02 -6 < 0.2 ug /I n- Propylbenzene 103 -65 -1 < 0.5 ug /I n- Butylbenzene 104 -51 -8 < 0.5 ug /I p- Chlorotoluene 106 -43 -4 < 0.5 ug /I p- Dichlorobenzene 106 -46 -7 < 0.2 ug /I Ethylene dibromide 106 -93 -4 < 0.5 ug /I Allyl chloride 107 -05 -1 < 0.5 ug /I 1,2- Dichloroethane 107 -06 -2 < 0.2 ug /I Methyl isobutyl ketone 108 -10 -1 < 5 ug /I 1,3,5- Trimethylbenzene 108 -67 -8 < 0.5 ug /I Bromobenzene 108 -86 -1 < 0.2 ug /I Toluene 108 -88 -3 < 0.2 ug /I Chlorobenzene 108 -90 -7 < 0.2 ug /I Tetrahydrofuran 109 -99 -9 < 10 ug /I 1,2,4- Trichlorobenzene 120 -82 -1 < 0.5 ug /I Ambient Groundwater Monitoring Minnesota Pollution Network Data Report Control Agency Minnesota Unique Well Number: 778334 Sample Date: 05/24/2011 CHEMICAL CAS NUMBER RESULT UNIT Chlorodibromomethane 124 -48 -1 < 0.5 ug /I Tetrachloroethylene 127 -18 -4 < 0.2 ug /I sec-Butyl benzene 135 -98 -8 < 0.5 ug /I Ethyl ether 60 -29 -7 < 2 ug /I 1,1,1,2- Tetrachloroethane 630 -20 -6 < 0.2 ug /I Acetone 67 -64 -1 < 20 ug /I Chloroform 67 -66 -3 < 0.1 ug /I 1,3- Dichloropropane 142 -28 -9 < 0.2 ug /I cis -1,2- Dichloroethylene 156 -59 -2 < 0.2 ug /I trans -1,2- Dichloroethylene 156 -60 -5 < 0.1 ug /I Methyl tert-butyl ether 1634 -04 -4 < 2 ug /I meta & para Xylene mix 179601 -23 -1 4.8 ug /I m- Dichlorobenzene 541 -73 -1 < 0.2 ua /I Carbon tetrachloride 56 -23 -5 < 0.2 ug /I 1 1- Dichloropropene 563 -58 -6 < 0.2 ug /I 2,2- Dichloropropane 594 -20 -7 < 0.5 ug /I Benzene 71 -43 -2 < 0.2 ug /I 1,1,1- Trichloroethane 71 -55 -6 < 0.2 ug /I Methyl bromide 74 -83 -9 < 1 ug /I Chloromethane 74 -87 -3 < 1 ug /I Dibromomethane 74 -95 -3 < 0.5 ug /I Halon 1011 74 -97 -5 < 0.5 ug /1 Chloroethane 75 -00 -3 < 0.5 ug /I Vinyl chloride 75 -01 -4 < 0.2 ug /I Methylene chloride 75 -09 -2 < 0.5 ug /I Tribromomethane 75 -25 -2 < 0.5 ua /I Dichlorobromomethane 75 -27 -4 < 0.2 ug /I 1,1- Dichloroethane 75 -34 -3 < 0.2 ug /I 1,1- Dichloroethylene 75 -35 -4 <0.5 ug /I HCFC -21 75 -43 -4 < 0.5 ug /I CFC -11 75 -69 -4 < 0.5 ug /I CFC -12 75 -71 -8 < 1 ug /I CFC -113 76 -13 -1 < 0.2 ug /I 1,2- Dichloropropane 78 -87 -5 < 0.2 ug /I Ambient Groundwater Monitoring Minnesota Pollution Network Data Report Control Agency Minnesota Unique Well Number: 778334 Sample Date: 05/24/2011 CHEMICAL CAS NUMBER RESULT UNIT Methyl ethyl ketone 78 -93 -3 <10 ug /I 1,1,2 - Trichloroethane 79 -00 -5 < 0.2 ug /I Trichloroethylene 79 -01 -6 < 0.1 ug /I 1,1,2,2- Tetrachloroethane 79 -34 -5 < 0.2 ug /I 1,2,3 - Trichlorobenzene 87 -61 -6 < 1 ug /I Hexachlorobutadiene 87 -68 -3 < 1 ua /I Naphthalene 91 -20 -3 < 1 ug /I o- Xylene 95 -47 -6 2.4 ug /I o- Chlorotoluene 95 -49 -8 < 0.5 ug /I o- Dichlorobenzene 95 -50 -1 < 0.2 ug /I 1,2,4- Trimethylbenzene 95 -63 -6 < 0.5 ug /I 1,2- Dibromo -3- chloropropane 96 -12 -8 <2 ug /I Organic carbon C -ORG 1.2 mg /I Copper 7440 -50 -8 < 0.5 ug /I Cobalt 7440 -48 -4 < 0.5 ug /I Zinc 7440 -66 -6 1.74 ug /I Boron 7440 -42 -8 < 20 ug /I Aluminum 7429 -90 -5 < 2.5 ug /I Lead 7439 -92 -1 < 0.5 ug /I Lithium 7439 -93 -2 < 5 ug /I Manganese 7439 -96 -5 < 5 ug /I Molybdenum 7439 -98 -7 < 0.5 ug /I Nickel 7440 -02 -0 4.15 ug /I Silver 7440 -22 -4 < 0.2 ug /I Strontium 7440 -24 -6 125 ug /I Titanium 7440 -32 -6 1.91 ug /I Arsenic 7440 -38 -2 < 0.8 ug /I Barium 7440 -39 -3 51.7 ug /I Beryllium 7440 -41 -7 < 0.3 ug /I Cadmium 7440 -43 -9 < 0.1 ug /I Chromium 7440 -47 -3 1.62 ug /I Vanadium 7440 -62 -2 < 1 ug /I Ambient Groundwater Monitoring Minnesota Pollution Network Data Report Control Agency Minnesota Unique Well Number: 778336 Sample Date: 05/24/2011 CHEMICAL CAS NUMBER RESULT UNIT Sodium 7440 -23 -5 15.2 mg /I Calcium 7440 -70 -2 78 mg /I Potassium 7440 -09 -7 1.4 mg /I Magnesium 7439 -95 -4 21 mg /I Iron 7439 -89 -6 < 20 ug /I Bromide 24959 -67 -9 0.0125 mg /I Chloride 16887 -00 -6 12.7 ma /I Sulfate 14808 -79 -8 8.59 ma /I Ammonia - nitrogen AMMONIA -N < 0.05 mg /I Kjeldahl nitrogen N -KJEL 0.28 mg /I Inorganic nitrogen (nitrate and nitrite) NO2NO3 4.52 mg /I Phosphorus 7723 -14 -0 0.014 mg /I Ethylbenzene 100 -41 -4 < 0.5 ug /I Styrene 100 -42 -5 < 0.5 ug /I cis -1,3- Dichloropropene 10061 -01 -5 < 0.2 ug /I trans -1,3- Dichloropropene 10061 -02 -6 < 0.2 ug /I n- Propylbenzene 103 -65 -1 < 0.5 ug /I n- Butylbenzene 104 -51 -8 < 0.5 ug /I p- Chlorotoluene 106 -43 -4 < 0.5 ug /I p- Dichlorobenzene 106 -46 -7 < 0.2 ug /I Ethylene dibromide 106 -93 -4 < 0.5 ug /I Allyl chloride 107 -05 -1 < 0.5 ug /I 1,2- Dichloroethane 107 -06 -2 < 0.2 ug /I Methyl isobutyl ketone 108 -10 -1 < 5 ug /I 1,3,5- Trimethylbenzene 108 -67 -8 < 0.5 ug /I Bromobenzene 108 -86 -1 < 0.2 uq /1 Toluene 108 -88 -3 < 0.2 ug /I Chlorobenzene 108 -90 -7 < 0.2 ug /I Tetrahydrofuran 109 -99 -9 < 10 ug /I 1,2,4- Trichlorobenzene 120 -82 -1 < 0.5 ug /I Chlorodibromomethane 124 -48 -1 < 0.5 ug /I Tetrachloroethylene 127 -18 -4 < 0.2 ug /1 sec - Butylbenzene 135 -98 -8 < 0.5 ug /I 1,3- Dichloropropane 142 -28 -9 < 0.2 ug /I lw :'i Ambient Groundwater Monitoring Minnesota Pollution Network Data Report Control Agency Minnesota Unique Well Number: 778336 Sample Date: 05/24/2011 CHEMICAL CAS NUMBER RESULT UNIT cis -1,2- Dichloroethylene 156 -59 -2 < 0.2 ug /I trans -1,2- Dichloroethylene 156 -60 -5 < 0.1 ug /I Methyl tert -butyl ether 1634 -04 -4 < 2 ug /I meta & para Xylene mix 179601 -23 -1 1.1 ug /I m- Dichlorobenzene 541 -73 -1 < 0.2 ug /I Carbon tetrachloride 56 -23 -5 < 0.2 ug /I 1,1- Dichloropropene 563 -58 -6 < 0.2 ug /I 2,2- Dichloropropane 594 -20 -7 < 0.5 ug /I Ethyl ether 60 -29 -7 < 2 ug /I 1, 1, 1,2-Tetrachloroethane 630 -20 -6 < 0.2 ug /I Acetone 67 -64 -1 < 20 ug /I Chloroform 67 -66 -3 < 0.1 ug /I Benzene 71 -43 -2 < 0.2 ug /I 1,1,1 - Trichloroethane 71 -55 -6 < 0.2 ug /I Methyl bromide 74 -83 -9 < 1 ug /I Chloromethane 74 -87 -3 < 1 ug /I Dibromomethane 74 -95 -3 < 0.5 ug /I Halon 1011 74 -97 -5 < 0.5 ug /1 Chloroethane 75 -00 -3 < 0.5 ug /I Vinyl chloride 75 -01 -4 < 0.2 ug /I Methylene chloride 75 -09 -2 < 0.5 ug /I Tribromomethane 75 -25 -2 < 0.5 ug /I Dichlorobromomethane 75 -27 -4 < 0.2 ua /I 1,1- Dichloroethane 75 -34 -3 < 0.2 ug /I 1,1- Dichloroethylene 75 -35 -4 < 0.5 ug /I HCFC -21 75 -43 -4 < 0.5 ug /I CFC -11 75 -69 -4 < 0.5 ug /I Naphthalene 91 -20 -3 < 1 ug /I o- Xylene 95 -47 -6 0.61 ug /I o- Chlorotoluene 95 -49 -8 < 0.5 ug /I o- Dichlorobenzene 95 -50 -1 < 0.2 ug /I 1,2,4- Trimethyl benzene 95 -63 -6 < 0.5 ug /I 1,2- Dibromo- 3- chloropropane 96 -12 -8 <2 ug /I 1,2,3- Trichloropropane 96 -18 -4 < 0.5 ug /I `c6-j- Ambient Groundwater Monitoring Minnesota Pollution Network Data Report Control Agency Minnesota Unique Well Number: 778336 Sample Date: 05/24/2011 CHEMICAL CAS NUMBER RESULT UNIT tert- Butylbenzene 98 -06 -6 < 0.5 ug /I Cumene 98 -82 -8 < 0.5 ug /I p- Cymene 99 -87 -6 < 0.5 ug /I CFC -12 75 -71 -8 < 1 ug /I CFC -113 76 -13 -1 < 0.2 ug /I 1,2- Dichloropropane 78 -87 -5 < 0.2 ug /I Methyl ethyl ketone 78 -93 -3 < 10 ug /I 1,1,2 - Trichloroethane 79 -00 -5 < 0.2 ug /I Trichloroethylene 79 -01 -6 < 0.1 ug /I 1,1,2,2- Tetrachloroethane 79 -34 -5 < 0.2 ug /I 1,2,3 - Trichlorobenzene 87 -61 -6 < 1 ug /I Hexachlorobutadiene 87 -68 -3 < 1 ug /I Organic carbon C -ORG 1.2 mg /I Aluminum 7429 -90 -5 < 2.5 ug /I Lead 7439 -92 -1 < 0.5 ug /I Lithium 7439 -93 -2 < 5 ug /I Manganese 7439 -96 -5 < 5 ug /I Molybdenum 7439 -98 -7 < 0.5 ugh Nickel 7440 -02 -0 2.88 uq/I Silver 7440 -22 -4 < 0.2 ug /I Strontium 7440 -24 -6 107 ug /I Titanium 7440 -32 -6 1.27 ug /I Arsenic 7440 -38 -2 < 0.8 ug /I Barium 7440 -39 -3 48.3 ug /I Beryllium 7440 -41 -7 < 0.3 ug /I Cadmium 7440 -43 -9 < 0.1 ug /I Chromium 7440 -47 -3 0.61 ug /I Cobalt 7440 -48 -4 < 0.5 ug /I Copper 7440 -50 -8 0.56 ug /I Vanadium 7440 -62 -2 < 1 ug /1 Zinc 7440 -66 -6 < 1 ug /I Boron 7440 -42 -8 24.4 ug /I