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3.2 Environmental Protection Measures 3.Z1 Cultural Resources Information on cultural n'sources occurring along the Yankee Gulch Project pipeline corridor has been taken from the environmental assessments for two gas pipelines that the project pipeline corridor will largely parallel (Barrett 1994, CMG 1995). Areas of the Yankee Gulch Project pipeline corridor that are within the 125-foot construction ROW but were not covered under these two surveys will be surveyed as required by the BLM. Additional surveys that may be required are described below. • No cultural resources surveys aze required along the valley floor in Hatch Gulch (MP 2 to MP 6). Previous surveys of Hatch Gulch did not encounter cultural resources, and the potential for discovering sifi~ along the valley bottom is considered low by the BLM. • Cultural resources surveys will likely be required from the point that the pipeline corridor exits Hatch Gulch to the Greasewood Compressor Station (MP 6 to approximately MP 8). r~ • A cultural resources survey of the proposed Davis Point pipeline corridor section may be required because none has been conducted previously along this particulaz reach. Specifically, the survey would include the segment from the point on Davis Point at which the proposed pipeline route diverges from the existing pipeline corridor to the point at which it rejoins the existing Unocal corridor neaz the conflulence of East and Middle Fork Pazachute Creek (MP 32 to MP 35). In that pipeline construction will not commence until the year 2000, American Soda intends to complete any required additional cultural resources surveys within the coming field season. This would allow ample time for consultation and cultural resources clearings to be accomplished prior to commencing pipeline construction the following yeaz. The primary form of mitigation for cultural resources will be avoidance. The primary treatment choice would be to narrow the ROW to produce the least amount of disturbance. Depending on the value of the resource, minor excavation and data recovery to full excavation and data recovery could be necessary. Full excavation and data recovery could extend beyond the limits of the proposed ROW. Existing survey data should be adequate to chazacterize the potential for cultural sites, and the project should be able to avoid any sites that may be identified in the additional areas surveyed. Chie azchaeological site (:iRB3664) and two isolated finds (SRB3fi65 and 5RB3666) were previously identified along the Pipdirc Plan of Development 1f Yankee Guldi Sodnm~ Ma~erals Project Ameri4n Soda, LLP.