Currently, ELG-SCF achieves linear scaling for large systems when coupled with quantum fast multipole methods [1-2].However, a simpler method forms the Fock matrix directly from localized molecular orbitals, which requires transforming the two electron integrals from an atomic orbital basis to a localized molecular orbital basis.For each elongation step, constant scaling is achieved when cutoffis used to exclude atomic orbital two electron integrals not required in the transformation.