This document is an archaeological study for SLC-4 to SLC-6 for the Waterline Replacement Project. Vandenberg Air Force Base (AFB) intends to replace an approximately 40-year-old, 12-inchdiameter buried waterline with an 18-inch-diameter waterline. The existing waterline, which services Space Launch Complex (SLC) -4, SLC-5, and SLC-6, has inadequate capacity, is deteriorating, and requires frequent maintenance. The replacement waterline offers increased capacity. This report refers to the undertaking as the SLC-4 to SLC-6 Waterline Replacement Project. The scope of work for archaeological studies associated with the SLC-4 to SLC-6 Waterline Replacement Project called for investigations at one isolated artifact (VAFB-ISO-692) and at archaeological sites CA-SBA-539, -551, -654, -670, -676/H, -1125/H, -1145/H, -1678, and -2230. The work was divided into two types of investigations: absence/presence testing where resources were within the APE but not within the area of direct impact, and testing to assess adverse affects at sites that had previously been determined eligible for the National Register of Historic Places (NRHP). Based on Applied EarthWorks investigations for the SLC-4 to SLC-6 Waterline Replacement Project, the undertaking will not adversely affect known archaeological sites within the APE and no additional archaeological studies are recommended. However, given the high density of archaeological sites along the project route, it is possible that additional, previously unrecorded sites are present. As a consequence, Applied EarthWorks recommends archaeological and Native American monitoring during all ground-disturbing activities associated with the SLC-4 to SLC-6 Waterline Replacement Project.
Lebow et al. (Wed,) studied this question.