  The possibility of making a low cost, very intense (1MW) high energy proton
source at the Brookhaven Alternating Gradient Synchrotron (BNL-AGS) along with
the forthcoming new large underground detectors (approaching 1 MT in mass) at
the National Underground Science and Engineering Laboratory (NUSEL) in
Homestake, South Dakota or at the Waste Isolation Pilot Plant (WIPP) in
Carlsbad, New Mexico, allows us to propose a program of experiments that will
address fundamental aspects of neutrino oscillations and CP-invariance
violation. This program is unique because of the very long baseline of more
than 2500 km from BNL to the underground laboratory in the West. We used the
running scenario of a low energy, wide band neutrino beam with 1 MW AGS, 500 kT
of fiducial mass water Cherenkov detector, and 5x10^7 seconds of running time.
In this report we show that with these conditions we precisely measure dm^2_32
and sin^2(2theta_23) and have excellent sensitivity to sin^2(2theta_13) with a
distinctive signal spectrum. If sin^2(2theta_13) > 0.01 the experiment is
sensitive to the CP-violating phase in the mixing matrix with only neutrino
running. By running in the anti-neutrino mode we distinguish between the cases
dm^2_31 > 0 versus dm^2_31 < 0 using distinctive distortions to the electron or
positron spectrum. Lastly, the very long baseline allows the measurement of
dm^2_21 (in the LMA region) with approximately the same resolution as KAMLAND
but in the nu_mu -> nu_e appearance channel.
