First thing to realize is that Proc Reg will allow multiple Model statements.
Second the OUTEST option creates a data set containing estimates for each model and the fit statistics you have requested. You will want to read the documentation for details of the structure of the data set.
So you could reduce your code to:
proc reg data=lime outest=myestimates;
First: model LRE62 = EC SOM Alext ExchAlp CEC pH
/selection=adjrsq sse aic;
Second: model LRE60 = EC SOM Alext ExchAlp CEC pH
/selection=adjrsq sse aic;
run;
quit;
The text with the : before the Model statement is a Label. The output will have this word to identify which model the output pertains to and in the output data set to indicate which model the parameter and fit statistics are for. Likely I would use the name of the dependent variable if that varies in your models but used something else to show any short word should work.
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