The URL can be used to link to this page

Home My WebLink AboutDDW-2025-009264 March 20, 2024 Dani Zebelean, P.E. Environmental Engineer Utah Division of Drinking Water Re: Manti Culinary Water System – Treatment Plant Pilot Study Exemption Dani, Thank you for your time discussing the possibility of a pilot exemption for Manti City’s water filtration project. As a summary of that conversation, we feel that Manti’s spring water is an appropriate candidate for a pilot study exemption in accordance with current state rules. Manti recently collected a water sample from the combined spring group (SS290) transmission pipeline and submitted the sample for analytical testing. We have compared these test results against similar test results for waters where membrane filtration piloting was performed by various water systems and accepted by the Division. The following table presents the water system and membrane technology used in our comparison. Culinary Water System Source Type Membrane Technology Supplier/Manufacturer Mt Pleasant Spring PVDF Ultrafiltration Westech/Toray Monroe Spring PVDF Microfiltration Pall/Asahi Garden City Spring PVDF Microfiltration Pall/Asahi Each of the comparative water sources listed above has characteristics similar to Manti. Each system treats spring water that experiences occasional, seasonal turbidity. The membrane filtration plants in Monroe and Garden City have each been in successful operation for more than twelve years. The filtration plant in Mt. Pleasant was recently piloted and is currently under construction. Following guidance in Administrative Rule R309-530-4(4), we have compared the following constituents between Manti’s spring sources and the sources listed above where membrane filtration has previously been approved: • alkalinity, • pH, • temperature, • total organic carbon, • total suspended solids, and • turbidity A summary of the comparison of each constituent between the various water sources is provided in the narrative below. 25 East 500 North, Fillmore, Utah 84631 TEL 435.743.6151 | FAX 435.743.7900 Alkalinity Results of alkalinity testing are available for Manti, Mt. Pleasant, and Monroe. The following graph presents the comparative results for each water source. Sample dates are shown below the data. pH Results of pH testing are available for Manti, Mt. Pleasant, Monroe, and Garden City. The following graph presents the comparative results for each water source. Sample dates are shown below the data. Temperature The reported temperature measurements vary between water sources. This is attributed to some measurements being taken by the analytical laboratory after the samples had been on ice. Other measurements were taken in the field. Reported field temperature measurements for spring sources in Mt. Pleasant, Monroe, and Graden City range from approximately 5.0 to 7.8 degrees Celsius. The water from Manti’s spring source is anticipated to be characteristic of mountain spring water and will likely fall near the range of the other sources used in this comparison. The reported temperature for Manti’s spring water sample was 1.1 degrees Celsius. This, however, was reported by the laboratory after the sample was delivered on ice. Field temperature measurements can be obtained on the Manti spring water, if required. Total Organic Carbon Results of total organic carbon testing are available for Manti and Mt. Pleasant. The following graph presents the comparative results for each water source. Sample dates are shown below the data. Total Suspended Solids Results of total suspended solids testing are available for Manti and Mt. Pleasant. No detectable amounts of suspended solids were measured in water samples from either system. Turbidity Results of turbidity testing are available for all water sources in our comparison. The following graph presents turbidity results for each water source. Sample dates are shown below the data. The comparisons of the various analytical constituents made above suggest the combined spring water source for Manti City is similar to the other spring water sources where ultrafiltration and microfiltration membranes were successfully piloted and approved. The Garden City and Monroe membrane filtration plants have been in successful operation for many years treating water similar to Manti’s source. The filtration plant in Mt. Pleasant is currently under construction and scheduled to begin operating in the Fall of 2024. The data used to formulate this comparison are included with this letter. We respectfully request that an exemption to the piloting process be granted to Manti City for the use of either Toray ultrafiltration or Asahi microfiltration membrane units. If, during the procurement request for proposals, other membrane manufacturers desire an exemption, we will require similar comparative data showing their product is capable of treating water with characteristics similar to Manti. If received, we will submit this information to you for review and possible amendment of the exemption. If you have questions or require further information, please call. Sincerely, Benjamin Q. Coray, P.E. Project Engineer Sunrise Engineering Enclosure – Comparative Water Quality Test Data The analyses presented on this report were performed in accordance with the National Environmental Laboratory Accreditation Program (NELAP) unless noted in the comments, flags, or case narrative. If the report is to be used for regulatory compliance, it should be presented in its entirety, and not be altered. Client Service Contact: 801.262.7299 Mount Pleasant City Attn: Colter T. Allen 115 West Main Street Mount Pleasant, UT 84647 Work Order: 21A1330 Project: [none] 2/2/2021 Approved By: Dave Gayer, Laboratory Director 9632 South 500 West Sandy, Utah 84070 Serving the Intermountain West since 1953 801.262.7299 Main 866.792.0093 Fax www.ChemtechFord.com Page 1 of 6 Certificate of Analysis 21A1330-01Lab Sample No.: Name: Sample Site: Sample Matrix: Sample Date: Receipt Date: Sampler: Sneek Springs Drinking Water Colter T Allen 1/27/2021 10:30 AM 1/27/2021 2:29 PM Comments: PO Number: Project: Source Code:Sample Point:Report to State: System No.:UTAH20007Drinking Water N Mount Pleasant City Minimum Reporting LimitParameter Sample Result Units Analytical Method Analysis Date/Time Flag Preparation Date/Time EPA Max Contaminant Level (MCL) Inorganic NDCyanide, Total 0.002 mg/L SM 4500 CN-E 02/01/202102/01/20210.2 NDFluoride 0.10 mg/L EPA 300.0 01/27/202101/27/20214 7.6pH 0.1 SPHpH Units SM 4500 H-B 01/28/2021 12:4101/28/2021 12:34 13.6Sulfate 1.0 mg/L EPA 300.0 01/27/202101/27/2021250 252Total Dissolved Solids (TDS)20 mg/L SM 2540 C 01/29/202101/29/20211000 0.7Total Organic Carbon 0.5 mg/L SM 5310 C 01/30/202101/29/2021 NDTotal Suspended Solids (TSS)4 mg/L SM 2540 D 01/27/202101/27/2021 0.29Turbidity 0.05 NTU EPA 180.1 01/27/2021 16:4701/27/2021 16:075 Metals NDAntimony, Total 0.0005 mg/L EPA 200.8 01/28/202101/28/20210.006 NDArsenic, Total 0.0005 mg/L EPA 200.8 01/28/202101/28/20210.01 0.089Barium, Total 0.005 mg/L EPA 200.7 01/29/202101/29/20212 NDBeryllium, Total 0.001 mg/L EPA 200.7 01/29/202101/29/20210.004 NDCadmium, Total 0.0002 mg/L EPA 200.8 01/28/202101/28/20210.005 NDChromium, Total 0.005 mg/L EPA 200.7 01/29/202101/29/20210.1 NDMercury, Total 0.00020 mg/L EPA 200.8 01/28/202101/28/20210.002 NDNickel, Total 0.005 mg/L EPA 200.7 01/29/202101/29/20210.1 NDSelenium, Total 0.0005 mg/L EPA 200.8 01/28/202101/28/20210.05 1.6Sodium, Total 0.5 mg/L EPA 200.7 01/29/202101/29/2021 NDThallium, Total 0.0002 mg/L EPA 200.8 01/28/202101/28/20210.002 Page 2 of 59632 South 500 West Sandy, UT 84070801-262-7299 Office www.ChemtechFord.com Page 2 of 6 Certificate of Analysis 21A1330-02Lab Sample No.: Name: Sample Site: Sample Matrix: Sample Date: Receipt Date: Sampler: Acid House Drinking Water Colter T Allen 1/27/2021 11:08 AM 1/27/2021 2:29 PM Comments: PO Number: Project: Source Code:Sample Point:Report to State: System No.:UTAH20007Drinking Water N Mount Pleasant City Minimum Reporting LimitParameter Sample Result Units Analytical Method Analysis Date/Time Flag Preparation Date/Time EPA Max Contaminant Level (MCL) Inorganic NDCyanide, Total 0.002 mg/L SM 4500 CN-E 02/01/202102/01/20210.2 0.11Fluoride 0.10 mg/L EPA 300.0 01/27/202101/27/20214 7.8pH 0.1 SPHpH Units SM 4500 H-B 01/28/2021 12:4201/28/2021 12:34 13.1Sulfate 1.0 mg/L EPA 300.0 01/27/202101/27/2021250 276Total Dissolved Solids (TDS)20 mg/L SM 2540 C 01/29/202101/29/20211000 0.8Total Organic Carbon 0.5 mg/L SM 5310 C 01/30/202101/29/2021 NDTotal Suspended Solids (TSS)4 mg/L SM 2540 D 01/28/202101/28/2021 0.09Turbidity 0.05 NTU EPA 180.1 01/27/2021 16:4701/27/2021 16:075 Metals NDAntimony, Total 0.0005 mg/L EPA 200.8 01/28/202101/28/20210.006 NDArsenic, Total 0.0005 mg/L EPA 200.8 01/28/202101/28/20210.01 0.123Barium, Total 0.005 mg/L EPA 200.7 01/29/202101/29/20212 NDBeryllium, Total 0.001 mg/L EPA 200.7 01/29/202101/29/20210.004 NDCadmium, Total 0.0002 mg/L EPA 200.8 01/28/202101/28/20210.005 NDChromium, Total 0.005 mg/L EPA 200.7 01/29/202101/29/20210.1 NDMercury, Total 0.00020 mg/L EPA 200.8 01/28/202101/28/20210.002 NDNickel, Total 0.005 mg/L EPA 200.7 01/29/202101/29/20210.1 NDSelenium, Total 0.0005 mg/L EPA 200.8 01/28/202101/28/20210.05 6.0Sodium, Total 0.5 mg/L EPA 200.7 01/29/202101/29/2021 NDThallium, Total 0.0002 mg/L EPA 200.8 01/28/202101/28/20210.002 Page 3 of 59632 South 500 West Sandy, UT 84070801-262-7299 Office www.ChemtechFord.com Page 3 of 6 Certificate of Analysis Report Footnotes Abbreviations ND = Not detected at the corresponding Minimum Reporting Limit. 1 mg/L = one milligram per liter or 1 mg/Kg = one milligram per kilogram = 1 part per million. 1 ug/L = one microgram per liter or 1 ug/Kg = one microgram per kilogram = 1 part per billion. 1 ng/L = one nanogram per liter or 1 ng/Kg = one nanogram per kilogram = 1 part per trillion. Values reported in RED exceed Primary Drinking Water standards. Values reported in BLUE exceed Secondary Drinking Water standards. BLANK values in the MCL column indicate no standard. Data Comparisons Flag Descriptions SPH = Sample submitted past method specified holding time. Page 4 of 59632 South 500 West Sandy, UT 84070801-262-7299 Office www.ChemtechFord.com Page 4 of 6 Page 5 of 6 Page 6 of 6 The analyses presented on this report were performed in accordance with the National Environmental Laboratory Accreditation Program (NELAP) unless noted in the comments, flags, or case narrative. If the report is to be used for regulatory compliance, it should be presented in its entirety, and not be altered. Client Service Contact: 801.262.7299 Mount Pleasant City Attn: Colter T. Allen 115 West Main Street Mount Pleasant, UT 84647 Work Order: 21G0958 Project: [none] 7/26/2021 Approved By: Dave Gayer, Laboratory Director 9632 South 500 West Sandy, Utah 84070 Serving the Intermountain West since 1953 801.262.7299 Main 866.792.0093 Fax www.ChemtechFord.com Page 1 of 5 Certificate of Analysis 21G0958-01Lab Sample No.: Name: Sample Site: Sample Matrix: Sample Date: Receipt Date: Sampler: Springs Sample Tap Drinking Water Colter T Allen 7/15/2021 10:20 AM 7/15/2021 12:22 PM Comments: PO Number: Project: Source Code:Sample Point:Report to State: System No.:UTAH20007Piolt Treatment Plant N Mount Pleasant City Minimum Reporting LimitParameter Sample Result Units Analytical Method Analysis Date/Time Flag Preparation Date/Time EPA Max Contaminant Level (MCL) Calculations 260Hardness, Total as CaCO3 1.32 mg/L SM 2340 B 07/23/202107/23/2021 Inorganic 262Alkalinity - Bicarbonate (as CaCO3)1.0 mg/L SM 2320 B 07/16/202107/16/2021 NDAlkalinity - Carbonate (as CaCO3)1.0 mg/L SM 2320 B 07/16/202107/16/2021 NDAlkalinity - Hydroxide (as CaCO3)1.0 mg/L SM 2320 B 07/16/202107/16/2021 262Alkalinity - Total (as CaCO3)1.0 mg/L SM 2320 B 07/16/202107/16/2021 Metals 62.5Calcium, Total 0.2 mg/L EPA 200.7 07/23/202107/23/2021 NDIron, Total 0.02 mg/L EPA 200.7 07/23/202107/23/20210.3 25.3Magnesium, Total 0.2 mg/L EPA 200.7 07/23/202107/23/2021 0.0005Manganese, Total 0.0005 mg/L EPA 200.8 07/22/202107/22/20210.05 Page 2 of 49632 South 500 West Sandy, UT 84070801-262-7299 Office www.ChemtechFord.com Page 2 of 5 Certificate of Analysis Report Footnotes Abbreviations ND = Not detected at the corresponding Minimum Reporting Limit. 1 mg/L = one milligram per liter or 1 mg/Kg = one milligram per kilogram = 1 part per million. 1 ug/L = one microgram per liter or 1 ug/Kg = one microgram per kilogram = 1 part per billion. 1 ng/L = one nanogram per liter or 1 ng/Kg = one nanogram per kilogram = 1 part per trillion. Values reported in RED exceed Primary Drinking Water standards. Values reported in BLUE exceed Secondary Drinking Water standards. BLANK values in the MCL column indicate no standard. Data Comparisons Page 3 of 49632 South 500 West Sandy, UT 84070801-262-7299 Office www.ChemtechFord.com Page 3 of 5 Page 4 of 5