Attachments 1-4.pdf

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Attached to
Dworshak Dam Liquid Fertilizer Federal contract opportunity
Solicitation number
W912EF25Q0026
Issued by
Department of the Army Corps of Engineers Engineering District Walla Walla

About this file

This file contains four attachments related to a fertilizer delivery project at Dworshak Dam and Reservoir. Attachment 1 specifies the sample preparation and analysis methods for total metal concentration in fertilizer, with ICP/MS method 6020 required for testing arsenic, cadmium, cobalt, lead, molybdenum, nickel, selenium, and zinc (all with target levels <1.0000 ppm), and methods 7470A/7471A for mercury (<0.5000 ppm). Sample preparation method 3050B is required except for mercury analysis.

Attachments 2-4 contain maps and images showing the fertilizer delivery location and infrastructure: a map of Dworshak Dam and Reservoir marking the fertilizer delivery point near Bruce's Eddy Boat Launch, photos of a secondary containment area with lined berms and three green storage tanks, and an aerial view showing the desired tank location near the Resource Maintenance Office. The attachments provide technical specifications and site logistics information for the fertilizer delivery and storage system implementation.

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DWA Liquid Fertilizer PWS.docx DOCX document

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ATTACHMENT 1

Sample preparation, analysis methods, and standards for Total Metal Concentration

Metal Atomic Absorption

Inductively Coupled

Plasma / Mass

Spectroscopy

(ICP/MS)

ppm

Target for Fertilizer

Arsenic (As) 6020 <1.0000

Cadmium (Cd) 6020 <1.0000

Cobalt (Co) 6020 <1.0000

Lead (Pb) 6020 <1.0000

Molybdenum (Mo) 6020 <1.0000

Nickel (Ni) 6020 <1.0000

Selenium (Se) 6020 <1.0000

Zinc (Zn) 6020 <1.0000

Mercury (Hg) 7470A*, 7471A* <0.5000

Sample Preparation 3050B

*Sample preparation method 3050B cannot be used for an analysis of mercury. Instead, the sample preparation methods are described under procedures for analysis methods 7470A and 7471A.

Laboratory analysis shall comply with analytical and sampling test methods described in the latest version of U.S. Environmental Protection Agency’s publication SW-846, “Test Methods for

Evaluating Solid Waste, Physical/Chemical Methods.”

The latest version of the SW-846 can be accessed online at: https://www.epa.gov/hw-sw846

A paper copy of SW‐846 may be obtained by contacting:

National Technical Information Service (NTIS)

U.S. Department of Commerce

5285 Port Royal Road Springfield, VA 22161

(800) 553‐NTIS (553‐6847) 703‐605‐6000 (sales)

703‐605‐6900 (fax order)

Outside the continental U.S., call 703‐605‐6000 https://www.epa.gov/hw-sw846

ATTACHMENT 2

ATTACHMENT 3

Secondary Containment area

Tanks enclosed in containment area

ATTACHMENT 4

Product Test Standards (Att1 - needs review).pdf
03a_DWA Liquid Fertilizer 2021 - Spec Attachments (1-3).pdf
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