In 30Mg, existing data for B(E2) strengths connecting the ground and excited 0+ states to the first 2+ state have been used, together with earlier shell-model predictions of normal and intruder E2 strengths, to estimate the intruder-normal state mixing in the 0+ and 2+ states. Resulting mixing is small, as expected, and for the ground state my value of 0.11(7) has a larger uncertainty, but is in quantitative agreement with the estimate of 0.0319(76) obtained earlier from the measured E0 strength connecting the 0+ states.