Agenda - Council - 10/08/2019 - Laserfiche WebLink

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per year or more than 10,000 gallons per day. Owners of these wells have obtained groundwater appropriation permits from the MDNR. A new high capacity well installed within or near the DWSMAs could, potentially, affect the boundaries of the DWSMAs. Uses for the wells not used for the City's municipal water supply include irrigation of various types, non-metallic processing, municipal water supply for the city of Anoka, pollution containment, and HVAC. (Table C-9). Six of the non -Ramsey high capacity wells pump from the City's source water aquifer and two of the wells penetrate the source water aquifer and pump from a deeper aquifer (Table C-9). C.1.2.1.1.2 Potential Class V Well Locations An inventory of locations where Class V wells may be present within the DWSMAs was done as part of the PCSI. Typical land uses associated with the presence of Class V wells include automobile service stations and repair shops. As defined by the U.S. Environmental Protection Agency, cesspools and large-scale septic systems that serve more than 20 people also are also included in the Class V well classification. During the PCSI, it was determined that there are seven separate property parcels where Class V wells may be present or may have been present based on the type of business that is or had operated there or the use of the property (see Table C-4 and Figure C-6). For all seven properties, the assessment of potential for presence of a Class V well is due to their association with automobile repair. All but one of these properties (PCSI ID 227 on Table C-4) are found in the EPA's Class V Wells database. MDH did not require that the City determine if Class V wells are actually present on any of these properties. Results of the location verification are summarized in Table C-4. C.1.2.1.1.3 Storage Tanks The PCSI identified 13 properties on which storage tanks are or have been located (see Table C-5 and Figure C-7). These properties include a total of 44 current or former storage tank locations. There are 17 currently active tanks located on a total of five of the properties (Table C-5). Products stored in the active storage tanks vary from site to site and include various fuels and used oil. As indicated in Table C-5, releases from the tanks were reported at nine of the properties. Available information indicates that the MPCA has closed the tank release responses at all nine of the properties for which releases were reported but the information does not indicate if the leaking tanks were removed or abandoned in place. Results of the location verification are summarized in Table C-5. C.1.2.1.1.4 Chemical Storage Sites The PCSI identified two property parcels within the DWSMAs on which chemical storage occurs (Table C-6 and Figure C-8). Note that one of these properties (PCSI ID 255 in Table C-6) was also identified in the storage tank data as a location of active above ground storage tanks and a location were a tank leak had occurred and underground storage tanks had been removed. Information on the chemicals stored at these locations is presented in Table C-6. C.1.2.1.1.5 Spill Locations The PCSI identified six properties within the DWSMAs where a contaminant spill occurred (Table C-7 and Figure C-9). A comparison of Tables C-7 and C-5 indicates that three of the six properties were also C-5