A04_STATEMENT_OF_WORK.docx

1" Aggregate Base Course Material

1. Statement of work:

Valles Caldera National Preserve needs 3000 tons of grade 1 Aggregate Base Course material. The material will be hauled to the La Jara borrow Pit, Valles Caldera National Preserve, 38 miles north of San Ysidro NM. The material must be supplied to the pit by October 1, 2021. We are requesting pricing per ton delivered to the La Jara borrow Pit.

Specifications: Cover material shall meet the requirements of the following table of gradations as determined by New Mexico DOT supplemental specification: Section 303/304. Copies of the referenced New Mexico Specifications are attached (see Attachment A and Attachment B) or may be obtained from: https://www.mineralstech.com/docs/default-source/performance-materials-documents/cetco/drilling-products/slurry-specifications/nm-supplement.pdf?sfvrsn=cc4215f0_3.

TABLE 303-A

Base Course Gradation

PERCENTAGE BY WEIGHT PASSING SQUARE MESH SIEVES

Measurement and Payment: The contractor shall furnish weigh tickets from state certified scales for each delivery made. Payment will be made on actual quantities received.

Testing: The contractor shall have test samples submitted to the Government for suitability evaluation at least two (2) weeks prior to the actual delivery or acceptance of the cover aggregate. Government may require additional material testing if specifications are suspect.

Vegetation Management: The control of noxious weeds shall be achieved through a weed management plan. All parties submitting offers for sand and gravel must have a current weed management plan that has been approved by the botanist at Valles Caldera National Preserve. All plans require one annual inspection by Park staff during the growing season (June – August) prior to sale of material. Parties submitting offers must provide proof of the most recent weed inspection by Park staff. The weed inspection will designate a pit in one of three rating categories: acceptable, conditionally acceptable, or unacceptable. Gravel from a pit designated as unacceptable can be used if the material is heat treated to 300 degrees Fahrenheit and promptly transported from the quarry to the Preserve or a pre-approved weed free storage area to prevent possible weed contamination. A list of weeds of concern can be obtained from Valles Caldera National Preserve. The control of noxious weeds shall be achieved by one of the following methods.

Hauling: All vehicles and equipment to be used in Valles Caldera National Preserve shall be thoroughly pressure washed prior to arrival. Equipment shall be inspected at the appropriate Preserve entrance by a designated Park employee and only clean equipment shall be permitted into the Preserve. Particular attention must be shown to the under carriage and any surface where soil containing exotic weed seeds may exist. All loaded trucks and trailer shall be covered (tarped) when loaded. These efforts are critical to prevent the introduction and establishment of non-native plant species into the Preserve. Equipment inspection will be scheduled by the maintenance office and take place at the Preserve entrance. Inspection records shall be maintained by the Park Service. Equipment found operating in the Preserve that has not been inspected shall be dead lined and subject to a citation.

Delivery: All trucks and trailers will be covered (tarped) when loaded. The contractor shall adhere to all roadway use regulations and posted speed limits within the Preserve. The contractor shall deliver material to the approximate location noted in the line item above. The contractor shall coordinate the exact dates and times of delivery with the NPS in advance. The contractor shall insure that the total for all amounts ordered and delivered does not exceed the amount noted in the contract line item.

Submittals: At the time of delivery and with each invoice the contractor shall provide trucking manifests which shall serve as contractor certification as to the number of tons delivered.