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' CWCB Loan Application For the San Juan Water Conservancy District and the Pagosa Area Water and Sanitation District Attachment 3: Description of the Existing Water Supply Facilities and Existing Operational or Maintenance Problems ' The Pagosa Area Water and Sanitation District (PAWSD) service area encompasses approximately 41,408 acres. They operate approximately 290 miles of water line and 80 miles of sewer line. The PAWSD service area is broken down into two districts, referred to as District One and District Two (generally divided at Putt Hill near Pizza Hut). Generally, Four Mile Creek supplies water to District One through the Dutton Ditch (soon to be the Dutton Pipeline). District Two derives its water from the west fork of the San Juan River. In addition, the The PAWSD has two direct diversions out of the San Juan River. The primary San Juan River diversion is a 4.6 cubic foot per second (cfs) pump and pipeline to the San Juan ' Treatment Plant. The second San Juan River diversion is a 2.3 cfs gravity diversion from the West Fork to the Snowball Treatment Plant. To make sure water supplies are reliable, water is stored in reservoirs. The PAWSD currently has 2,630 acre-feet (AF) of existing usable storage, with an additional 900 AF upon the completion of the enlargement of Stevens Reservoir. Storage is comprised of five reservoirs or lakes: Hatcher (880 AF usable capacity), Stevens (530 AF usable capacity), Pagosa (920 AF usable capacity), Village (495 AF usable capacity), and Forest (300 AF usable capacity). Hatcher Reservoir gets its water from Four Mile Creek through Dutton Ditch. The Dutton Ditch diversion dam is capable of diverting water to Hatcher Reservoir, Stevens Reservoir, or both When Hatcher Reservoir is full, water is diverted to Stevens Reservoir. When Stevens Reservoir is full it spills to Lake Pagosa through the Linn and Clark Ditch. When Lake Pagosa is full it flows through a few golf course ponds and spills into Village Lake. When Village Lake is full it spills into Lake Forest. The PAWSD can also pump raw water from the San Juan River through the San Juan Pipeline to Village Lake, Forest Lake, or both. r~° After water is collected, it is treated at water treatment plants (WTP) to make it safe to drink~to remove unpleasant / odors or tastes. The PAWSD has four WTP that are operated as needed. District One has tie WTP: Hatcher,,S~ f/ and the San Juan. As their names imply, the Hatcher WTP (rated at 2 million gallons per day) treats water from Hatcher / Reservoir, and the San Juan -/ WTP (rated at 3 million gallons per day) treats water from the San Juan River. In synchronization, the fiver and Trujillo Road Booster Pump Stations can deliver 3 million gallons of water per day to the San Juan WTP through asix-mile pipeline. District Two gravity feeds from the West Fork of the San Juan River to a sedimentation pond. The water then goes to the Snowball WTP (rated at 1.5 million gallons per day). The PAWSD treated water distribution system is somewhat integrated so that water can be conveyed to nearly any part of the potable water service area. Once the water is treated, it is stored for use. In District One, the Hatcher WTP pumps water to the Hatcher Storage Tank (rated at 500,000 gallon capacity). The Hatcher Storage Tank can also be filled via the Mission Booster Station. The Stevens WTP supplies water to the Stevens Storage Tank (rated at 500,000 gallon capacity). Water from the Hatcher and Stevens Storage Tanks supply to the core area of District One. When the San Juan WTP is in operation, it pumps water to the Stevens Storage Tank and Meadows Storage Tank (rated at 1 million gallon capacity). In District Two, the Snowball WTP supplies water to the Snowball Storage Tank (rated at 250,000 gallon capacity), the Cemetery Storage Tank (rated at 1 million gallon capacity) and the Reservoir Hill Storage Tank (rated at 500,000 gallon capacity). Through a network of pipelines, the Snowball Storage Tank can supply water north and south of Town. Water from the Cemetery Storage Tank and the Reservoir Hill Storage Tank supplies water to Town and to Putt Hill One and Putt Hill Two Booster Stations, which pump water to the Putt Hill Storage Tank (rated at 150,000 gallon capacity). Water from the Putt Hill Storage Tank then gravity feeds to the Pagosa Hills area. After distribution system water has been used, it is collected and treated (or sanitized), and is then currently discharged to Martinez Creek. Construction of a new, state-of-the-art wastewater treatment plant was complete in 2004. This facility is capable of treating 4 million gallons of wastewater per day. As an aside, the 'old' wastewater collection system was comprised of 24 sewer lift stations that pumped to the main Vista Wastewater Treatment Plant which was capable of treating 1.3 million gallons of wastewater per day. It should be noted, too, that there is also a Highlands Lagoon System that treats wastewater from the Hatcher area subdivisions.