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HomeMy WebLinkAbout2011-01-19 PACKET 08.A.REQUEST OF CITY COUNCIL ACTION COUNCIL AGENDA MEETING ITEM # DATE 1/19/11 PREPARED BY Community Development Howard Blin ORIGINATING DEPARTMENT STAFF AUTHOR COUNCIL ACTION REQUEST Receive first quarter results on the Cottage Grove Ambient Air Monitoring. STAFF RECOMMENDATION Receive first quarter results on the Cottage Grove Ambient Air Monitoring. BUDGET IMPLICATION $N /A $N /A N/A BUDGETED AMOUNT ACTUAL AMOUNT FUNDING SOURCE DATE REVIEWED APPROVED DENIED ❑ PLANNING ❑ ❑ ❑ ❑ PUBLIC SAFETY ❑ ❑ ❑ ❑ PUBLIC WORKS ❑ ❑ ❑ ❑ PARKS AND RECREATION ❑ ❑ ❑ ❑ HUMAN SERVICES /RIGHTS ❑ ❑ ❑ ❑ ECONOMIC DEV. AUTHORITY ❑ ❑ ❑ ® ENVIRONMENTAL 1/12/11 ® ❑ ❑ SUPPORTING DOCUMENTS ® MEMO /LETTER: Memo from Thomas Henning, SEH, dated 1/14/11 ❑ RESOLUTION: ❑ ORDINANCE: ❑ ENGINEERING RECOMMENDATION: ❑ LEGAL RECOMMENDATION: ® OTHER: Excerpt from 11 1 12/11 Environmental Commission meeting minutes ADMINISTRATORS COMMENTS :1 y Administrator Date COUNCIL ACTION TAKEN: ❑ APPROVED ❑ DENIED -A TO: Jennifer Levitt, PE, City of Cottage Grove FROM: Thomas A. Henning, PE, CHMM DATE: January 14, 2011 RE: Cottage Grove Ambient Air Monitoring - First quarter results SEH No. 113702 30.0 1.0 Purpose The City of Cottage Grove retained Short Elliott Hendrickson, Inc. (SEH) to conduct ambient air monitoring at a location near the 3M Cottage Grove ( "3M ") facility. The purpose of the monitoring is to measure annual concentrations of select metals and volatile organic compounds (VOC) near the incinerator operated at the 3M facility. 3M has proposed to process non -3M generated wastes in the incinerator. The monitoring is being conducted prior to this change to determine current conditions. The monitoring is proposed to continue for at least two years to also measure ambient concentrations after this change. The City will determine if monitoring is necessary beyond this two year period. 2.0 Monitor Location Selection SEH staff worked with 3M staff, representatives of the Minnesota Pollution Control Agency (MPCA) and the City of Cottage Grove to select a location for the monitoring. The selected site is located northwest of the incinerator stack on 3M property (inside the facility fence). The selected site met each of the following site selection criteria: 1) Located on 3M property so access and security are provided 2) Power is accessible to the site 3) Provides acceptable distances from sources of background emissions (i.e. highways, industrial facilities, etc.) 4) Location is in line with prevailing wind direction from the incinerator stack 5) The distance from the incinerator stack to the sampling location is approximately equal to the distance from the incinerator stack to the nearest residence. 3.0 Methods The sampling and analytical methods used where selected to match ambient monitoring methods used by the MPCA at monitoring stations throughout the Twin Cities metropolitan area. This methodology was used so that the results of the monitoring near the 3M facility can be compared to the MPCA monitoring data. In general, samples are collected every 12`' day so that samples are collected on the same days that sampling occurs for the MPCA monitoring. The twelve day sampling cycle ensures that over the course of the sampling program, samples will be collected on each day of the week. Periodically, SEH collects a sample on the 6 `h or 18 day to randomize the sample days. Short Elliott Hendrickson Inc., 3535 Vadmus Center Drive, St. Paul, MN 55110 -5196 SEH is an equal opportunity employer I w w.sehinc.com 1 651.490.2000 1 800.325.2055 1 651.4902150 fax Cottage Grove Ambient Air Monitoring - First quarter results January 14, 2011 Page 2 A high volume sampler is used to collect 24 -hour total suspended particulate (TSP) samples. The sampler turns on at midnight of the sampling day and blows ambient air across a'filter for 24 hours. The filter is analyzed for TSP and fifteen metals. At the same time, a summa canister with a regulator is used to collect a 24 -hour sample that will be analyzed for individual VOCs. Collected samples are analyzed at Pace Analytical Laboratory. Filters used with the high volume sampler are prepared and processed according to the U.S. Environmental Protection Agency (USEPA) Compendium Method 10 -3.1 (USEPA, 1999) as applicable for gravimetric determination. This method describes the numbering, pre -field tare weighing of filters, and post -field final weighing of filters. Pre -field filters are conditioned in a room of constant humidity and temperature and are gravimetrically tarred. After air samples have been collected, the filters are returned to the laboratory and conditioned as before and weighed. Filter handling procedures found in Appendix J of 40 CFR Part 50 will also be followed. VOCs are collected and analyzed using EPA method TO -15 procedures. Six liter summa canisters sanitized and place under vacuum at or greater to 25 inches mercury are used to collect the VOC samples. Table 1 shows the monitoring program's analytical methods, sampling equipment, target metals and individual VOCs. Table 1. Methods and Equipment Com ound Test Method Sampling Equipment Total Particulates EPA Method I0-3.1 Tisch TE -5170V Metals' EPA Method I0-3.4 Tisch TE -5170V Volatile Organic Compounds EPA Method TO -15 Summa Canister with a Tisch TE- 123flow controller Notes: Individual metals to be monitored are: Aluminum Barium Antimony Beryllium Arsenic Cadmium Chromium Iron Nickel Cobalt Lead Selenium Copper Manganese Zinc 2 Individual VOCs to be monitored are listed on the results table, Table 3. SEH developed a quality assurance and quality control (QA /QC) program to help ensure monitoring results are accurate and precise. QA /QC procedures include collecting field and method blanks, and periodically splitting samples with the MPCA. These steps provide a check that contaminates are not introduced during the sample collection, handling or analytical procedures. 4.0 Weather Conditions Weather conditions for each sampling date are collected and recorded at the meteorological station located at the 3M Cottage Grove facility. A broad range of data is collected at the station. On Table 2 we provide a summary of wind speed and direction, temperature, and precipitation on the sampling days. As an alternative, SEH can also use meteorological data collected at the South Saint Paul airport, however, because of the proximity to the sampling location, the 3M meteorological data is likely more representative of conditions at the ambient samplers. Cottage Grove Ambient Air Monitoring - First quarter results January 14, 2011 Page 3 Table 2. Weather Data Date Wind Direction from Average Wind Speed, mph Range Wind Speed, mph Average Temp degrees F precipitation Inches 10/11/2010 SE 3.1 0.5 to 8.9 60 0.0 10/23/2010 E 5.3 1.9 to 11.1 55 0.0 11/4/2010 W 13.6 4.3 to 23.7 41 0.0 11/16/2010 S 6.9 3.0 to 11.0 33 0.0 1214/2010 W 8.3 4.7 to 17.7 21 0.1 1211612010 SW 5.5 3.4 to 40.5 17 0.0 5.0 Results and Discussion The results presented in this Technical Memorandum are considered preliminary since they represent the first six of sixty or more samples that will be collected over the two year monitoring program. Care should be taken to not emphasize a single concentration because laboratory or other errors can result in outliers that do not reflect actual ambient concentrations. A more relevant assessment is an analysis of longer term trends and averages. Table 3 shows the results of the first six sampling events along with the minimum and maximum ambient concentrations from the MPCA monitoring program during 2009 and health benchmarks for specific compounds. The 2009 MPCA data are provided to compare the 3M site monitoring data with the range of concentrations measured by MPCA at other locations in Minnesota. The health benchmarks are shown to compare the measured results with concentrations that could impact health. The MPCA defines health benchmarks for ambient air on the MPCA website (www.pca.state.mn.us / , click on the "Glossary" link): A level of chemical concentration in ambient air, at or below which a chemical or defined mixture of chemicals is not likely to cause an adverse health effect to the general public when exposure occurs over a prescribed period of time. For the first six rounds of sampling, the results are generally comparable with background ambient air concentrations measured throughout the Twin Cities. Many of the compounds are not detected in the ambient samples. Two metals and five organic compounds have been consistently detected at the 3M monitoring station: iron, lead, carbon disulfide, Freon 12, hexane, methyl chloride, methyl ethyl ketone, and toluene. With the exception of carbon disulfide, the measured concentrations of these compounds are comparable with concentrations measured at other local monitoring stations. On Figures 1 through 8 the concentrations of these seven compounds and TSP are compared with concentrations measured on the same days at other Twin Cities monitoring stations. All measurements are below their respective health benchmarks. Note that the TSP concentrations are compared with the State of Minnesota's ambient air quality standard of 150 micrograms per cubic meter (ug/m TSP concentrations at the 3M monitor are below this ambient standard. We are evaluating potential sources of carbon disulfide in the area. The 3M plant is not expected to be a significant source of carbon disulfide emissions. Carbon disulfide is commonly formed as a byproduct of combustion of a fuel that contains significant quantities of sulfur. These fuels might be coal, residual or Cottage Grove Ambient Air Monitoring - First quarter results January 14, 2011 Page 4 unrefined oil, or a biogas such as landfill gas or digester gas. We are also using our QA /QC procedures to evaluate if our field or laboratory procedures are introducing a source of carbon disulfide to our samples. 6.0 Additional Monitoring Ambient monitoring is scheduled to continue for at least two years through October 2012. Monitoring beyond October 2012 will be determined based upon a comparison with the MPCA monitoring program results. We will continue to evaluate the measured concentrations and compare them with both background concentrations and health benchmarks. Attachments: Table 3. Preliminary Results of Ambient Air Monitoring Figures 1 though 8 c: Howard Blin, City of Cottage Grove Kathryn Sarnecki, SBH TAH /tah/KLS s lanVe4ott3V213902V1st quarter results \jm2011_reehmemo 0 11411 docx Table 3 Preliminary Results of Ambient Air Monitoring Cottage Grove Monitoring Location Compound 2009 Statewide Maximum 2009 Statewide Minimum Health Benchmark tri 1 11 -0ct -0O ug/m 2 23.01610 Uri 3 4NOy40 uglm 4 16- 14.,10 aglm 6 4-Dab-10 di 6 16 -Decd0 ug/m' 1 Total Particular, Matter 150 51,1 41.6 10 16.5 8.8 26.1 Metals: Anil., 0.05 10.003 02 nd no nd no nd rd teem. OM <0004 00023 no nd n o t no nd no 6eryl 0.00 10.002 00024 old ad nd no nd ad Cadmium 0.01 <0.002 G.0056 ad not ntl nd ad no Chramium 0.02 1(.001 None nd no ad no 0.0047 0.0044 Cobalt 0.01 10.002 None ad ntl no nd nd ntl Copper 2,46 <ri None nd ntl _ no _ no nd 0. 003 Iron 6.71 10.136 None 1.69 0.64 046 0.15 0.15 0.23 Lead 1129 10.003 0.083 0.0068 00058 0.0020 0.0026 00O26 00031 Manganese 032 <O.op4 0.2 0.058 0,03] nd .d no 00063 Nickel 0.02 <0.002 0.05 nd ad ntl ad ntl no Selenium 002 10.003 20 nd nd nd nd nd 0.0061 Volatile Compounds: 1,1,2,2- tedbidloroerhane <32 1132 0.17 no no nd no no nd 11,2,3,4,4Nevac edfere -1,3 but 1.]) 1)7 0.45 nd ntl ad nd nd ntl 1 12- Trichloroethane 136 136 063 no ad no nd ad nd 1,1 -0)ohloroethaoe <17 11] 6.3 nd nd ad ad ntl no 1,1- DICM1loroethene 116 116 200 nd nd ntl nd ad no 1,24 -T hl r.benzene 135 135 200 not no nd 3.ot nd no DicMOropropane 1.20 120 40 nd nd rd nd ad nd 5- Trimethyibenzene 10.30 1,23 None ntl nd ntl ntl nd no 112 0.30 ad nd nd ad no nd 2- Propan0l W e 116 180.13 118 7000 no no 6,0 no nd nd 4- Eihyl lDluene 13.90 1.21 None nd no no nd no nd B enzene 64.06 119 13 1.8 O>J nd nd nd nd Si chloride 140 140 020 nd ad no nd nd ad Sano.dohloromell ana 1,25 125 None rd nd nd nd - nd no C arbon dleuifide 21.84 109 700 3.2 1.9 1.2 13 1.61 nd Carbon tetrachloride ago 0.27 17 old no 2.0 nd rd no Chlorobenzene 037 118 1000 no ad nd nd ad nd C hI.Eirm 4.01 125 300 no no 21 ad nd no de -1,2 Dictdo:oethare 110 <i0 None ad ntl old nd ad not cis- 13- Dichlompropene 112 112 25 ad no ad nd no ad Cyclohexane 24.69 1.14 6000 nd 2,0 nd no no ad Dibmm.chloromefM1ane 126 126 None no _ nd _ - nd _ nd nd _ ntl Dichlorobenzene(m) 131 131 None nd ad ad no nd nd Dk hlorobandana (o) 1.26 126 200 ntl nd nd no nd nd Dical.roberzene(p) 1.13 29 0.91 no _ nd nd n nd not Dl id bra di6ucromeNano (Freon 12) 20.39 1.61 200 240 2.6 2.6 2.4 2.41 _ 2.8 Dichloroteribluoroethane( Freon 114) 1.87 119 None nd nd nd rd nd nd Ethyl Chloride 109 109 10000 no ad nd no _ no no E fdylbenzene 42.62 116 40 nd ntl no 8.6 nd ad Ehylene choride 122 c27 038 nd ad nd nd nd nd Ethylene bland. ad 1.23 123 005 no ad nd nd no nd Heptane 2895 117 None 13 12 no ntl ad ad Hexane 94.30 125 2000 18 170 J.9 2.6 113 old Methyl bromide 0.73 1.11 5 nd no no nd ad ad Methyl butyl ketone 1.62 124 None no no no no no no Methylcbloode 1.95 106 56 1.1 0.77 0.99 CJs 0]11 110 Methyl dinkodrorm 107 113 50M nd ad nd no nd no Methyl ethyl ketone 8,45 120 5000 9.4 311 SO 2.0 2.5 1.1 Methyl tert-butyl ether 116 ci6 38 ad no nd nd nd nd Propylene 13.54 108 3000 no nd 08J 0.8] nd nd styrene 1.00 1117 1000 nd no nd 2.5 nd nd Tatroharoethene 1.24 124 20 nd 10y ntl 3.0 nd Tatohydreturer 131 131 Nil Non ntl ntl na nd nd - no ad Toluene 24036 116 400 53 3.1 1.1 2.1 1.11 23 trend 2- Dichloroetnene 0.14 113 None nd nd no nd no nd trans -13 DChiord,rd,,e 19 119 2.5 nd no no no nd nd TrichlOroethen 214 1.18 3.0 11 nd ntl no ntl ntl __ Trichlor.flu.romet (Freon it) 42132 1_11_1 121 _.___ ]00 13 _1_111 1.5 _... 1.5 _._ nd nd _ ntl TricMOrotMluoroethane 9.48 151 30000 ntl nd nd nd nd no Vinylawtate 8984 120 200 37 no ad ad no no ViVicMOdde 113 1.13 1.1 nd no no ad not nd Xylene (m8p) 1543] 132 100 2] nd ntl 45.3 nd not Xylene(.) 4969 115 100 nd no no 16.8 no nd Notas'. 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(E . a)Am ...... wg ... . . .. � - �\ ;! ` \ / E » \ \ � co � \ - 2 � � - � ■ \ \- �R \ \ 2 � ® , - . � � \ « -5 - = J \ N = z = z (E »)Am _l � . . ] ] \ � � � ƒ tz ; ® - \ \ \\ ƒ ƒ< 2 \ \j ƒ co \ � } } � 2 � 2 � x/ ® ] 06 \ \ ® 2 I I ~ ~ s - / \ [ LL e �\\ e � \ , \ \ j \ \ j 4 ( = = u EXCERPT FROM UNAPPROVED MINUTES OF THE ENVIRONMENTAL COMMISSION MEETING ON JANUARY 12, 2011 5.2 Report on Ambient Air Monitoring Blin stated that this will be the first in a series of reports on the air monitoring program we are currently conducting at the 3M Cottage Grove facility. The monitoring, which started in October, is being conducted by the City of Cottage Grove through our consulting firms SEH and Pace Laboratories, with the majority of the funding provided by 3M. There have been six samples so far, and there will be about 30 a year for two to three years. Thus far, the monitoring has not shown any areas of significant concerns. All of the chemicals being testing for are far below the health benchmarks established for those chemicals. The samples from our monitor are being compared to monitors that the MPCA operates throughout the Twin Cities area. Tom Henning with SEH provided a presentation on the results from the ambient air monitoring program at 3M Cottage Grove. He explained that the methods being used to collect and analyze the samples are similar to those used by the MPCA at its ambient air monitoring stations. We are also matching their procedures, methodologies, and days to sample to better compare with their results. He stated that there are two samplers: one collects total suspended particulates (dust) and analyzes those materials for 15 metals and the other analyzes the samples for 50 volatile organic compounds. Gibson asked for further information about parts per billion. Henning explained that it measures volume. As an example, if a container holds six liters, if there is one part per billion, there is six billionths of a liter of volume of that compound. Henning stated that the results he will be highlighting are those that were found regularly. It was asked if there was significance in that on October 23 everybody seemed to have a bump up. Henning stated that he does not know what happened that day, but perhaps it was drier day with more dust in the air. He stated that most readings were well below the benchmark levels and were comparable to the MPCA data. Lynch asked if there were any start ups, shut downs, or malfunctions on the incinerator over this time period. Henning responded he does not know. Lynch explained that the reason for the question is that in the first four samples there were barely any metals and then on December 4, while they are in very low concentrations, all sorts of metals were detected. Henning stated that for some reason the lab got an extraordinarily low detection limit on December 4. So while the concentrations were detected, they are at much lower levels. It was suggested that it would be helpful in the future to add in the table the performance of the laboratory equipment based on their quality control. McLoughlin asked if, because things like temperature inversion and wind may affect the moni- toring, could weather conditions be overlaid with the results. Henning responded that there have not been any days with extraordinary weather and it was dry every day they sampled. Olson asked about the long -range plan on helping the Commission understand whether there are issues that ought to be raised with the City Council. If the results appear to be okay, how will Excerpt from Environmental Commission Minutes Report on Ambient Air Monitoring January 12, 2011 Page 2 that be presented to the Commission so appropriate questions can be asked? Henning stated that the purpose of this monitoring is to get an understanding of the air quality in Cottage Grove, specifically near the 3M facility, so the analysis will be the same as was shown tonight. It will be compared with background concentrations, to concentrations that MPCA has monitored throughout the Twin Cities, and to health benchmarks. Olson then asked if these graphs will be getting bigger with more dates that could show more smooth line trends? Henning responded that is exactly what will happen; there will be more data points on the graph, which will de -em- phasize any one sample. There may also be seasonal variations. It was asked if SEH will draw conclusions as part of the assignment. Henning responded that they will help interpret the data or give an assessment of what the data might suggest. Porett stated that what is important about getting these initial figures is they are the baseline of what the emissions are prior to 3M accepting outside waste. Gibson asked if there is any tenta- tive date for when that waste will start coming in. Blin responded no. The last he heard from the MPCA, which was before the holidays, is they have been waiting for the EPA to finish their re- view, but he thinks they are at the point now where the MPCA could issue the permit. Gibson asked if there would be a public comment period associated with that. Blin responded a public meeting will be held in Cottage Grove. Gibson then asked if there would be at least one more of these reports before they accept outside waste. Blin responded that this report has six samples and there will likely be ten more samples as part of the baseline. It was asked about scheduling Mr. Henning for another Environmental Commission meeting. It was suggested that he return when there are a sufficient number of data points or sooner if the permitting process were to accelerate.