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Dames & Moore, 1999 - USDA Forest Service

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of Historic Places. In that report, the historic district includes the Railroad Creek drainage from Lucerne on<br />

Lake Chelan, the Holden Village townsite, the Holden Mine mill and mine complex with its associated<br />

buildings and features, and the outlying properties known as Honeymoon Heights and Winston home sites.<br />

Consequently, any proposed modifications to the structures andlor immediately surrounding areas are<br />

required to be reviewed by the USFS.<br />

4.6 ECOLOGICAL CONDITIONS<br />

4.6.1 Aquatic Biota<br />

The aquatic biota field. investigations (benthic macroinvertebrate sampling, fish sampling and habitat<br />

evaluations) were conducted between mid-September to mid-October 1997. Although aquatic biota,<br />

particularly fish, may relocate during other periods of the year (e.g., runoff), the fall sampling afforded<br />

the safest ind most efficiknt sampling of aquatic biota within Railroad Creek and the upper Stehekin<br />

River drainage. Surface water quality samples were also collected at the aquatic biota sampling locations<br />

during this period.<br />

4.6.1.1 Sampling Locations<br />

Site<br />

Five aquatic sampling locations considered potentially affected by mine activity and two reference locations<br />

were selected within Railroad Creek. Referring to Figure 4.6-1, these sampling locations are described as<br />

follows:<br />

RC-6. Railroad Creek immediately downstream from the Wilderness Boundary. This<br />

location was established as a reference location representing conditions upstream from<br />

mine activities. This location was selected to be compared with PNLLs sampling Station -<br />

1.<br />

a RC-1. Railroad Creek approximately 300 yards downstream from the Wilderness<br />

Boundary. This location was also established as a reference location representing<br />

conditions upstream from mine activities. This location was selected to be compared with<br />

PNL's sampling Station - 2.<br />

RC-9. Railroad Creek immediately upstream from Copper Creek. This location was<br />

established to represent conditions downstream from tailings pile 1 and the portal drainage<br />

and was selected to be compared with PNL's sampling Station - 3.<br />

RC-7. Railroad Creek adjacent to tailings pile 3. This location was established to represent<br />

aquatic conditions from Copper Creek downstream from tailings pile 2 and was selected to<br />

be compared with PNL's sampling Station - 4.<br />

RC-5a. Railroad Creek immediately upstream from Tenmi le Creek. This location was<br />

established to represent conditions from tailings pile 2 downstream to Ten Mile Creek and<br />

was selected to be compared with ~~L's'sam~lin~<br />

Station - 5.<br />

G:\WPDATA\OOS\REPORTSWOLD~-ZVU\4-O.DOC<br />

17693-005-019Vuly 19. <strong>1999</strong>:4:Sl PM:DRAFT FINAL RI REPORT

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