2025-01-15 PL-INT-2022-001460 Historic Bridge Draft PA on Minor Bridge Repairs - Request Comments

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373 4) All activities that are proposed within a designated or potential historic district 374 are Tier 3 Activities. The SOI Qualified Professional(s) will review the 375 activities to determine whether they will alter, either directly or indirectly, the 376 characteristics that qualify, or may qualify, the historic district, as well as the 377 historic bridge or structure, for listing in the NRHP. The SOI Qualified 378 Professional(s) will gather additional information, as necessary for the review 379 of the historic district, including, but not limited to, the NRHP nomination, 380 SHPO records, town web sites, as well as county master plans, and other county 381 records, as appropriate. Designated and/or potential historic districts will be 382 noted on the Compliance Form (Appendix C). To determine whether the 383 activities have an effect on an historic district(s), the SOI Qualified 384 Professional(s)will consider the characteristics that qualify, or may qualify, the 385 historic district for the NRHP following guidance in National Register Bulletin 386 15:How to Apply the National Register Criteria for Evaluation. 387 C. Limitations on Ground Disturbing Activities 388 For Hawai'i Historic Bridge Program projects qualifying as Tiers 1, 2, or 3 activities, 389 ground disturbances will not take place or be limited to avoid or minimize the 390 potential to impact archaeological resources as described in this stipulation. Any 391 ground disturbing activity not conforming to these limitations shall not be covered 392 by this Agreement. 393 1) Ground-disturbing activities for qualifying projects, including scour 394 countermeasures and foundation repairs, may take place within a strict 10-foot 395 Archaeological Clear Zone, as measured from the furthest edge of the 396 superstructure and substructure of the existing historic bridge or structure. 397 2) If an old bridge abutment or pier, retaining wall, flume or irrigation structure 398 (referred to as remnant structure) is identified in the vicinity of the historic 399 bridge, its treatment shall be a Tier 3 activity. The treatment of remnant 400 structures shall be limited to three options: 401 a) avoidance of the remnant structure 402 b) minor repair of the remnant structure following the guidance manual. 403 c) this Agreement does not apply because the remnant structure cannot be 404 avoided, or major repairs are required. 405 3) Driven poles for signage, guardrails and other types of roadside appurtenances 406 are allowable within the Right of Way and outside of the 10-foot 407 Archaeological Clear Zone for poles with a maximum 4-inch diameter to be 408 driven no more than a depth of 48 inches below existing ground surfaces. DRAFT FINAL Programmatic Agreement for the Hawai'i Historic Bridge Program 11 January 2, 2025