The water balance for a Modified In Situ retort burning shale with a mean grade of 25 gal/ton and with a nominal production of 57,000 bpsd is shown in figure 6-11 the water rates shown were determined as indicated in Table 6-32, the material balance for the retort. As seen, there are two process condensate streams produced. The retort condensate is derived from water vapor condensing in the retort; this water percolates through the unretorted shale and leached out inorganic salts, mainly as bicarbonates. A probably composition is given in Table 6-33, which suggests that themmonia concentration is low, and H2S probably negligible. The gas condensate on the other hand leaves the retort in the vapor phase and is condensed from the gas in a scheme similar to that shown in Figure 6-2 for the Paraho plant. It is not expected to contain significant concentrations of inorganic salts, but the dissolved gases will, if in equilibrium with the retort gas composition of Table 6-34, be about 21,000 mg NH3/l, 42,000 mg CO2/l and 100 mg H2S/l. Organics will be presented in both condensate streams.