GENERAL32961 - Laserfiche WebLink

Home Browse Search

• The Piceance Site is located approximately 22 miles southwest of Meeker, Rio Blanco County, on the Yankee Gulch Joint Venture Leases. The Piceance Site occupies portions of T15, R97W, Sections 15 through 22, 28, and 29 of the Sixth Prime Meridian. The pipeline corridor is approximately 44 miles long and extends from within the Piceance Site to the Parachute Site. The Parachute Site is located approximately 3 miles northwest of the town of Parachute, Garfield County, with the preferred Parachute Site occupying the existing Unocal facility in the south half of T6S, R96W, Section 34. 7.1.2 Topography and Elevation Topographically, the Piceance Site is dissected by shallow valleys that are separated by broad, relatively flat, soil-covered ridges. The highest elevation of the Piceance Site (6,700 feet mean sea level) occurs in the southwest corner, while the lowest elevation (6,020 feet) occurs in the northeastern part at Piceance Creek. The total relief within the Piceance Site is approximately 680 feet. Piceance Creek, which is located between the east and west portions of the Piceance Site, is a perennial stream that flows from the southeast generally toward the north. Piceance Creek occupies a broad, flat floodplain about one-quarter mile wide bounded by steep banks. Three dry washes on the property are tributaries to Piceance Creek. These include Horse Draw along the southern border of the Piceance Site, an • unnamed dry wash crossing Sections 20 and 21, and a third dry wash draining much of Sections 16 and 17. These dry washes contain intermittent water only during spring snowmelt and during heavy summer and fall rainstorms. The pipeline corridor crosses Piceance Creek twice over its 44-mile length, once at Horse Draw in T1S, R97W, Section 28 and once at the mouth of Collins Gulch in T2S, R96W, Section 32. Elevation along the pipeline corridor ranges from 6,100 feet at the Horse Draw Piceance Creek crossing to a maximum of 8,280 feet on Barnes Ridge at the divide between the Piceance Creek and Parachute Creek drainages in T4S, R96W, Section 34 to 5,360 feet at the Parachute Site. The pipeline corridor has its greatest change in elevation at Davis Point, north of the confluence of the West Fork and the Middle Fork Parachute Creek in TSS, R96W, Section 24, where it drops from approximately 8,160 feet to 5,880 feet over a distance of approximately 4,000 horizontal feet. From this point, the corridor parallels Parachute Creek in a relatively flat valley where it terminates at the Parachute Site at approximate elevation 5,360 feet. The preferred Parachute Site is virtually level. 7.2 GEOLOGY AND SOILS 7.2.1 Regional Geology The entire American Soda project area is included within the Piceance Creek Basin. • The Piceance Creek Basin is a broad, asymmetric, southeast-to-northwest structural and topographic basin located in northwestern Colorado. The basin has an areal Amencan Soda, L.L.P. '7_2 Commercial Mme Plan August ltl, 1998