This camp is offered through Neveh Shalom Congregation but open to the entire Portland Community.  Hebrew Immersion summer camp. http://www.nevehshalom.org/learning/youth_education/kochavim

This camp is called Israeli Camp and is located at Camp Shomria in Ontario.  Its run in partnership with Kochav Lavan and Israeli Scouts and the local UJF.  More on the camp here: http://www.kachol-lavan.com/images/stories/campenglish.jpg    

This program offers both solid Hebrew language instruction during the year for children but also a summer camp that focuses on Hebrew language as well.  Read more about the program herE:  http://www.kesherweb.org/camp.php