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Environmental Remediation <br />Environmental contamination is well documented within <br />the Twin Lakes Redevelopment Area, but is not fully un- <br />derstood. In the early 2000s, the City, with financial assis- <br />tance from the U.S. EPA, conducted an area-wide Phase I <br />Environmental Site Assessment and groundwater stud- <br />ies. As the majority of land within this area is privately <br />owned, the City's efforts were limited to publicly owned <br />right-of-way. Property owners have also conducted as- <br />sessment activities on individual sites. Both City- and <br />property-owner-led investigations have found widespread <br />petroleum contamination as well as areas of hazardous <br />substance contamination in the soil and groundwater. <br />Soil and groundwater contamination includes: <br />• Diesel-range organic compounds <br />• Gasoline-range organic compounds <br />• Benzene, ethylbenzene, toluene, and xylene <br />• Volatile organic compounds (VOCs) <br />• Chlorinated VOCs <br />To date, the source of the groundwater contamination has <br />not been found. <br />Without outside intervention, environmental cleanup <br />is anticipated to occur incrementally, prior to project <br />construction. The City created a TIF Hazardous Sub- <br />stance Subdistrict for this area. The income generated by <br />this district is expected to drop below its projection as <br />its value is derived from the existing market value of the <br />properties, which are expected to decrease with the 2010 <br />assessment. The cleanup costs far exceeded the City's <br />ability to pay with the more favorable initial projection, <br />thus the existing gap will increase. <br />Needed Activities <br />• Enroll the area into the State's Voluntary Cleanup <br />Program and Petroleum Cleanup Program <br />• Finalize subsurface of soil and water investigation <br />• Undertake remedial planning <br />• Implement action plans <br />Estimated Cost <br />$16 million <br />� . � '�� �� <br />� � :��: - <br />- . �. �• " '� - S� �y ��+ F-r <br />4. a'' � � �r'� <br />. ��. ;,� � � <br />--� ' �: - - .. <br />� � r ; ^' .•• . �-�,,., �� <br />� <br />� �'�1�i_ � — r-- ..,�, d�'� � <br />19• : � � . ti � �'o,i ��.,�� <br />f.:ti• <br />� "�,i, � 1 .: -,;:��; ��.. <br />��_�.�,;� �. f <br />= ti ��� ��; <br />Twin Lakes 1974. This area was contami- <br />nated because of its historical trucking <br />uses. <br />Although secured by a fence, people find <br />ways in. <br />Illegal dumping of rubbish continues to <br />occur. <br />Twin Lakes Redevelopment Project 3 City of Roseville <br />