You can use ArcGis as a kml renderer too (version => 2.12l):

{mosmap centerlat='46.7279'|centerlon='-93.2811'|zoom='11'|mapType='Terrain'|
kml='http://pca-gis02.pca.state.mn.us/ArcGIS/rest/services/TMDL/TMDL2008/MapServer'|kmlrenderer='arcgis'}

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It's using the following javascript:  ArcGIS JavaScript™ Extension for Google Maps™. It may be used for non-commercial reason, see license.

For more possible layers, see: http://sampleserver1.arcgisonline.com/ArcGIS/rest/services