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Chapter 2 Impact of Changes on City Wells I. CHANGES IDENTIFIED IN: . . Phy~icale,wironm~nt.al1d !...and U~~"" ""..___, ," .. The City of Centerville had experienced a significant growth in population during the 1990- 2000 census. This is reflected in the change in land use principally from agricultural to residential. Some commercial and industrial development has taken place as well. Future changes in the physical environment will be driven by development such as expansion of storm sewers to replace ditches. Transportation The Anoka County Highway Department is investigating options to improve traffic flow between Interstate Highways 35E and 35W in the Centerville-Lino Lakes area. A potential change could include the addition of freeway ramps for 35W at Main Street (CSAH 14). A corresponding improvement of the highway would be increase commercial traffic through Centerville. Well #1 DWSMA No changes to land use within the DWSMAs for Well #1 are expected. The ~ DWSMA covers an area fully developed (between 1989 and 1994) with single family homes in three subdivisions. The remaining large parcel is a City park. Well #2 DWSMA Land use within the DWSMA for Well #2 includes 5 agricultural parcels larger than 20 acres that are located in the City of Lino Lakes. These agricultural parcels (over 150 acres and zoned for future commercial and industrial development) represent the greatest potential for changes to the physical environment in the DWSMA. Surface Water and Groundwater No significant changes are noted to surface water or groundwater. II. IMPACT OF CHANGES Water Use The demand on Centerville's water system is expected to increase by 60% in the next 10 years. It is planned to install water mains to the remaining development areas. The remaining 71 properties. in the City's DWSMAs, without water main access are included in this ten-year project. The Water System Management Plan (1997) details the expansion of the City's water system. Influence of Existing Water and Land Programs and Regulation The City's zoning and development controls guide development within the community principally to establish compatible land use development and redevelopment. Some development controls (e.g. septic system ordinance, surface water management section of development ordinance) address potential contaminant sources on a property regardless of its zoning classification. The State has numerous environmental management statutes, rules, and programs that influence construction. location, and maintenance of facilities and land use activities that represent potential contaminant sources (i.e. underground petroleum tank program). The Anoka County Groundwater Protection Assessment (June 1995) lists the potential contaminant source activities and facilities managed through State programs. Some July 3, 2007 DRAFT Centerville Wellhead Protection Plan (Part 2) Page 11