00017378 Exhibit E Material Source Narrative.pdf

DATE: June 16, 2026

TO: Ramon Alonso ODOT R4 Maintenance Operations Liaison

CC: Ben DeGrande ODOT Transportation Maintenance Manager District 10 - Bend

FROM: Scott Billings, CEG ODOT Engineering Geologist

SUBJECT: Material Source Narrative Long Butte Cinder Pit ODOT Source #OR-09-072-4, DOGAMI #09-0002 US97 (Hwy 004), MP 130.18

Introduction This memo and attachments should be duplicated and distributed to all bidders that inquire about this prospective material source, as per Section 00120.25 of the Oregon Standard Specifications for Highway Construction, 2024 ed. The development plan can be found on Sheets GE01 and GE02 of the Plans, and the Special Provisions are in Section SP00235. The Contractor should review the information provided in this application package and consider variables in production and implementation to produce the required material quantities based on their knowledge of the project-specific development plan and experience with like materials. Any changes to the development plans or special provisions for the material source must receive written approval of the Engineer.

The current development plan for this source was prepared based upon the estimate of the project requiring approximately 15,000 cubic yards of produced and stockpiled sanding aggregate. The area identified in the plans as the Excavation Area contains adequate material necessary to complete the project with the above-proposed quantity.

Approximately 10 acres will be available for equipment setup, aggregate processing, and stockpiling and possibly an additional 0.5 acre for new excavation area.

This prospective material source is an ODOT-owned source of aggregate materials, located in the SW¼ SW¼ of Section 22, T. 16 S., R. 12 E., W.M., approximately 5 miles north of Bend, OR. To access the site, exit at Deschutes Market Interchange at US97 MP 130.18, loop around to Tumalo Road, and then travel 0.8 miles to 85th Street. Turn north and travel 0.25 miles, turn northwest onto 85th Place, and travel 0.5 miles to the gated source on the right.

Department of Transportation ODOT GEEGH Section (Mountain Unit)

63055 N Hwy. 97 Bldg. M Bend, OR 97703

Phone: (541) 388-6186

Material Source Narrative Long Butte Cinder Pit ODOT Mountain Unit - Geology

Site Geology Long Butte Cinder Pit is located on the southern flank of a cinder vent/deposit within the Deschutes Formation, erupting sometime in the Pliocene (3-4 million years ago), according to DOGAMI’s published Oregon Geologic Data Compilation, Release 6 (OGDC-6). Based on the mapping associated with this area, the surrounding and underlying geology is a similarly aged basalt flow; however, excavations in the pit have only encountered cinders along with a few zones of more welded cinders which form harder boulder-sized rocks that may be more difficult to reduce for usable sanding aggregate.

Development Concept The area identified as the Excavation Area on the development plan map should be in-place material, possibly with a thin layer of finer material from the previous operation. The concept for the current development is to expand the previous excavation to the northwest, creating stable, clean working faces and a level, uniform floor. This will allow long-term goals of efficient resource removal, continuing access into the source, and maximizing the area available for future processing and stockpiling

Past Operations This pit has been used multiple times to produce sanding aggregate for ODOT, most recently in 2022. The only issue on file associated with this site is the potential to produce some oversize material within the site. As noted above, this is due to the zones/seams of more welded material. Special consideration should be given to the preparation of the bid, taking into account the need to handle or reduce oversize material to a usable size –

Material Source Narrative Long Butte Cinder Pit ODOT Mountain Unit - Geology special equipment or equipment setup may be necessary for secondary reduction, or to enable the Contractor to handle the larger material if it is created in the source. As addressed in the Specifications, all loosened oversize material, with the exception of 50 cubic yards (maximum dimension of 2.5 feet), is to be reduced to a size no larger than 1 foot diameter; therefore, Contractors should bid accordingly.

General Information As per Oregon Standard Specifications Section 00120.15, Examination of Work Site and Solicitation Documents; Consideration of Conditions to be Encountered, Contractors shall carefully examine this site and become familiar with the existing conditions and appearance of the site prior to bid submittal. Based on the on-site visits and review of all available information, the Contractor will then be able to submit a bid based upon the existing site conditions, the conditions they expect to encounter at the time of the proposed operation, and the most accurate information available for the source. As stated in the operating specifications, any proposed development plan changes shall be submitted in writing for approval by the Engineer. Documentation contained within this Material Source Narrative Packet is for informational purposes only; it is not meant to replace those pages supplied in the Bid Packet.

Attachments

1. DOGAMI Operating Permit #09-0002

Oregon Dept. of Geology & Mineral Industries Mineral Land Regulation & Reclamation Program

229 Broadalbin St. SW Albany OR 97321-2246

(541) 967-2039

GRANT OF LIMITED EXEMPTION -- Renewal

Michelle Wright R.G, C.E.G Oregon Department of Transportation 3012 Island Ave

ID No.: 09-0002 Site Name: 09-072-4; Long Butte County: Deschutes

La Grande OR 97850 Twp R S TL: 16S12E22 2800

Pursuant to ORS 517.750 through 517.990 as amended, the above named permittee is granted an exemption from the requirements for a reclamation plan and a bond for this site.

Issuance of this Grant of Limited Exemption is not a finding of compliance with state-wide planning goals or the acknowledged comprehensive plan. The applicant must receive land-use approval from local government before using this exemption.

PENALTIES

It is the responsibility of the permittee to notify the department prior to expansion beyond the recognized limits of the Limited Exemption boundardy. Failure to do so places the permittee in the position of conducting a surface mining operation without a permit and subject to the penalties set forth in ORS 517.990(3) and (5).

Renewed January 14, 2026 Vaughn Balzer Reclamationist

RENEWAL IS REQUIRED BY SEPTEMBER 30, 2026

c: Deschutes County Planning Department