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lighting plan and will continue to work with the Developer on an appropriate style and layout. � The developer is responsible for working with Xcel Energy on installing decorative residential street lighting on the public streets within the development site. 9.5 Mechanical Equipment: The placement of inechanical equipment can create visual and noise issues. Given the proposal, it is assumed that air conditioning units for townhomes will be placed on the ground. All units must be placed on the sides of the home andbr screened from view. In the case of the condominiums, it is assumed that heating, cooling, and ventilating equipment and air conditioning units need to be affixed as wall units to the building facade, placed on the ground, or placed within roof cavities. Those units that are ground units should be centrally placed in the courtyard and screened from view. Should an emergency generator be contemplated for the housing buildings, the plans must indicate the proposed location and the generator must meet all applicable State decibel levels. 9.6 Utilities: The City has adequate sanitary sewer, storm water, and water main infrastructure in place and plans for extensions to support the development project. The Public Works Department has reviewed the concepts and must approve all of these �I�ns. 9.7 Environmental: The entire Twin Lakes area is considered a"Brownfield. This means that the parcels contain some level of environmental contamination. The first significant contamination the city encountered was located during the construction of Arthur Street. That contamination included benzene, creosote and construction adhesive as a result of the old construction company and bus painting operation previously located on the site. The clean up � was significant and cost $3.8 million for which a hazardous substance subdistrict using tax increment financing was established to pay for the clean up. There are known locations of leaking fuel storage tanks within Twin Lakes, most of which have been identified and received "No Action or No Association Letters" from the MN Pollution Control Agency. What this means is that the existing uses on the site (truck terminals) can remain with the contamination in place and no further remediation will be mandated. However, once redevelopment occurs, a new standard of clean up will be required based upon the redeveloped use. Housing obviously requires a higher level of clean up than commercial uses. For this reason, the existing property owners may not be responsible for the costs of cleanup. Whatever clean-up is not accomplished by former landowners would then be the responsibility of the Development Team (Refer to letter from MNPCA associated with the legal requirements for contamination cleanup). The City has completed additional soil and ground water testing in Twin Lakes using funds providedby the US EPA in the amount of $350,000. The limitedsoil testing indicated mostly petroleum contamination. The ground water testing did reveal one location within the Phase 1 area where hazardous contamination (TCE) was present at the deep (45 feet) ground water level. Because all habitable structures in Roseville use the centralized water system and water from the St. Paul WaterAuthority, this does not pose any iminent danger but will need to be more fully investigated prior to redevelopment. (All of the City environmental reports are online at the following link. (httn: w�vw.citvofrosevil(e.cortttdevefopmezlt/d��elo,�.rttivinla4cesiindex.htrT1,) 9.8 The development team has also completed soil tests on the properties that they have access to .� PF3595 — RCA Concept Plan and PrelimPlat Approval - 102504 Page 24