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french drain and gravel bed remain at the mouth of the air shaft. The air shaf t is the main area of concern. The air shaf t was refitted with a wooden grate in 7/92 for public safety concerns following an OSM oversight inspection. Phase II, the sodium hydroxide drip system was installed in 198 due to the insufficiency of the french drain to contain the water. The NaOH system was abandoned in due to the high maintenace required to operate the system and replaced with a more passive system based on water pressure and piezometric level. Phase III's passive system necessitated the construction of the long pond, adding a third pond to the treatment system. The height of the mine inflow is measured by a hose that runs from the Portal #1 seal (behind the wooden doors) and is held up to ascertain piezometric level. It is estimated that the mine is still continuing to rise in water level behind the concrete seal. Water is being Bumped from the air shaft beneath the leaky seal and pumped across the creek via a black rubberized hose. From there the iron-rich water is pumped out the spigots (4 in all) down the half rubber culvert to the long pond. The treatment system allows the iron to precipitate out once exposed to the air. The iron-rich water is pH neutral, ranging from 6.2 to 8.4, with a maximum allowable discharge at the NPDES point 001 of 3.2 ppm of iron. The NPDES outfall is found below the ridge, south and east of T2. Treatment ponds I and 2 (T1 and T2) are the final settling ponds before the water is discharged down slope via another black rubber hose, directly into the creek. The iron seems to settle out within 2 4 hours, water moving through the system from inflow to outflow at a rate of 30-90 gpm. within that time. Jim Stover, the mine engineer has constructed a series of baffles between the long pond and the two ponds; T1 and T2. Baffles also are between T1 and T2 and are shaped in an inverted "U", allowing water pressure to induce flow rate and quantity. Check for: 1. Treatment system hose integrity, ensure no leaks. 2. Baffle integrity and consistent flow between ponds. This can be detected via the open-ended pipes on the end of the long pond and T1. Listen for the water rushing through. Occasionally these baf f les clog up and need cleaning. 3. Half-culvert Bedding up or overflowing with iron precipitate. 4. Overflow at air shaft, usually seen in vegetation covered with orange iron precipitate indicating that water has breached the treatment system. If this occurs, as it did on 8/10/92 inspection, then the gravel covering the french drain will also be orange with iron precipitate. 5. Currently, the OMLR and operator, Jim Stover are in adequacy review to redesign the embankment on the east side of the long pond. Note seeps here, two are consistent.