  We extend the eV seesaw scenario to four lepton generations. The LSND anomaly
is taken as the right-handed seesaw scale, i.e. m_R ~ eV. The fourth generation
then gives a heavy pseudo-Dirac neutrino which largely decouples from other
generations, and is relatively stable. One effectively has a 3+3 solution to
the LSND anomaly, where we illustrate with numerical solutions. Our study
indicates that the third mixing angle sin^2(theta13) is likely less than 0.01.
