Well, i found 1 location for the 1222EFFP in the U.S. Forces Paris Telephone Directory dated 5 April 1945.
They were stationed on Linas (street name?), Montmarte, Paris. which is the old art district in north paris.
http://en.wikipedia.org/wiki/Montmartre
The unit Lineage is from the 15th Engineer Company
http://www.history.army.mil/html/forcestruc/lineages/branches/eng/0015enco.htm
15th Engineer Company Lineage
Constituted 5 May 1943 in the Army of the United States as the 1222d Engineer Fire Fighting Platoon
Activated 15 July 1943 at Camp Claiborne, Louisiana
Inactivated 8 May 1946 in France
Activated 30 June 1946 in Japan
Redesignated 30 June 1947 as the 538th Engineer Fire Fighting Platoon
Reorganized and redesignated 5 December 1947 as the 538th Engineer Fire Fighting Company
Redesignated 31 December 1947 as the 15th Engineer Fire Fighting Company
Inactivated 15 September 1948 in Japan
Campaign Participation Credit: World War II: Northern France