The LR are defined as generally a single cab, with 500 litres or less water on it.
Previously these sorts of vehicles were brigade owned (and often brigade built.) CFS haven't been building too many of these, but as the current ones get old, there is certainly a need to build new ones. (Various fires in the last two or three years have really shown how much the small appliances are needed in certain areas)
While I don't know what CFS are going to buy, but 70 may not be an extreme number - if you take it over 5 years...after all, CFS is replacing other appliances (eg 34's) at about 15 a year....75 over five years.....
Pip