Boulder Historic Places Plan

Historic Archaeology Component Form

Resource Number : 5BL.7094

Temporary Resource Number : N/A

footing is located on the north bank of Boulder Creek and two footings are located on the south bank. The north footing (previously recorded as Feature 2 Tower 1 [Smith 1998]) is primarily constructed of mortared sandstone blocks with some granite cobbles. In contrast, the two footings on the south bank (previously recorded as Feature 2 Towers 2 and 3 [Smith 1998]) are primarily constructed of mortared cobbles. The north footing measures approximately 88 inches tall (above ground level) on its north elevation, which is built into the creek bank, and 126 inches tall on its south elevation, where Boulder Creek has slightly undercut the structure. The north footing is made of two distinct, stacked sections. The bottom section comprises 7–11 irregular courses of large sandstone slabs. It measures approximately 73 inches tall on the south elevation and 45 inches tall on the north elevation. It measures approximately 68 inches north-south × 94 inches east-west at the base and 80 inches north-south × 60 inches east-west at the top of the section. The top section of the comprises 9–10 irregular courses of smaller sandstone blocks and measures 53 inches tall. The top section is flush with the bottom section on the north, east, and west elevations, but set back by approximately 15 inches on the south elevation, creating a south-facing “shelf.” A rectangular opening centered in the base of the top section extends a portion of this shelf through to the north elevation. The opening measures 34 inches wide north-south × 19 inches tall × 30 inches deep. Two long, approximately 4-inch-thick sandstone slabs span this opening, supporting the superstructure. The rounded top of the structure measures approximately 62 inches north-south 22 inches east- west. A 4-inch-diameter pipe attached with a thick layer of concrete runs lengthwise across the very top of the north footing. A pair of riveted iron girders is laid horizontally between the north footing and a steep bank to the north. The south ends of the girders rest in the rectangular opening in the north footing, while the north ends of the girders are buried in the hillslope. Each girder measures 5.25 inches wide × 10 inches tall × approximately 25 feet long, and they are spaced 17.5 inches apart. Several lengths of the 1-inch-diameter wire cables are scattered on the ground below the girders, partially buried. At the north end of the girders, a 1.125-inch-diameter metal rod protrudes vertically from the ground. The upper end is twisted into a closed, welded loop and the base screws into a separate metal ring. PaleoWest was unable to access the two south footings because they are bounded by Boulder Creek to the north and private property parcels to the east, south, and west. However, the south footings were previously recorded in detail by Smith (1998). From PaleoWest’s vantage point on the north bank, these footings appear largely unchanged from that previous documentation. However, the adjacent private property owners appear to use the area for recreation, judging by the presence of outdoor furniture next to, between, and leaning against these structures. In addition, the northernmost of the two south footings has been slightly undercut by Boulder Creek on its north elevation. Feature 3 : Feature 3, located at the east end of 5BL.7094, comprises two low mounds connected via a long, low berm. The east mound is located north of F1. It is irregularly shaped with maximum dimensions of approximately 48 feet northwest-southeast × 26 feet southwest-northeast × 2 feet high. Several large boulders have been placed randomly on top of it, and a modern interpretive sign has been installed to the northwest of it. The west mound is located north of F2. It measures approximately 80 feet east-west × 110 feet north-south × 4–5 feet tall. The connecting berm runs east-west between the south sides of the two mounds, tracing the north edge of a modern dirt walking trail. It measures approximately 90 feet long × 20 feet wide × 1 foot tall. Together, the two mounds and connecting berm form a crescent shape open to the north that measures 210 feet east-west × 115 feet north-south. F3 roughly outlines the former location of the main smelter building (Smith 1997, 1998). While some portions of F3 were likely formed in modern times during construction of the adjacent walking and biking trails and municipal court buildings, it likely also contains historical materials. A short segment of concrete wall located near the northeast edge of the east mound was exposed during construction of the Boulder Creek Path (Smith 1997). The wall was subsequently reburied and may still be located below the mound; PaleoWest did not relocate it. One artifact was found in association with F3: a single red brick found on the west mound measuring 7.5 × 4.25 × 2.75 inches. Feature 4 : Feature 4 comprises an exposed concrete wall located near the west edge of the F3 west mound. The wall is oriented north-south. Most of the wall is buried within the F3 west mound; only the top of the wall is visible, flush with the ground surface. It measures 1 foot wide × 14 feet long. F4 is likely a foundation wall of the former smelter building. Feature 5 : Feature 5 comprises a pair of large granite boulders located on the south side of the F3 west mound

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