1365283-event.pdf

14 January 2026

26CRDLWBBDODD-0008S - Alum Application @ Silver Lake This contract covers alum treatments for Silver Lake (Delaware County) to lower phosphorus and reduce algal bloom frequency and intensity.

14 January 2026

Open 1/14/2026 11:30 AM CST Type DNR - Request for Bid Close 2/5/2026 9:00 AM CST Number 26CRDLWBBDODD-0008S Currency US Dollar

Contacts Colton Lullmann colton.lullmann@dnr.iowa.gov

Commodity Codes None Added

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Objective: This contract will include alum application for Silver Lake (Delaware County), a priority restoration lake in Iowa, to reduce phosphorus concentrations in the lake and thereby decrease the frequency and intensity of algal blooms.

Background information: High nutrient loading in Iowa lakes, particularly from phosphorus, has accelerated eutrophication and subsequently degraded water quality, impaired ecological health, and reduced recreational opportunities. As a result, many Iowa lakes experience frequent and widespread algal blooms, diminished water clarity, unpleasant odors, oxygen depletion, and fish kills, which have become common occurrences during the open-water season.

The Lake Restoration Program (LRP) has been working to develop new tools for managing phosphorus in lakes over the past five years, particularly those that are effective at treating internal phosphorus recycling. The LRP first worked with researchers from Iowa State University and the University of Wisconsin – Madison to better understand mechanisms for internal loading in Iowa Lakes (2020-2023 study) and develop strategies for managing different pathways of internal loading.

In 2020, the LRP hired Shive Hattery and Limnotech to investigate restoration alternatives at Silver Lake, a small natural lake located in Delaware County, including a dredging feasibility study and modelling effort to show how different restoration practices (including an alum application) would reduce phosphorus concentrations in the lake. As a part of this study, sediment cores were collected from the lake bottom to estimate the portion of the total phosphorus load that was attributed to internal loading. Additionally, a watershed model was utilized to determine the amount of phosphorus coming to the lake from the watershed. Silver Lake is a high priority for restoration, and the LRP has been working with the local community over 10 years to stabilize water levels in the lake and implement watershed best management practices to reduce phosphorus loads from the watershed. The study determined that an alum application program was the most cost effective and lowest risk restoration alternative for improving water quality. Silver Lake was re-cored in late 2025 to confirm alum and sodium aluminate quantities needed to develop an accurate dose for inactivating phosphorus being released from the sediments at Silver Lake.

This alum application program, spread over two doses, will help inactivate phosphorus being released from the sediments at Silver Lake and improve overall water clarity and quality.

Internet website where contract terms and conditions are posted:

http://www.iowadnr.gov/InsideDNR/RFPBidLettings.aspx

It is advised to "Save Progress" often and especially after uploading documents.

NOTE: Anytime the Respondent opens their bid after the initial submission, they MUST certify and resubmit. No information will be lost from the initial submission.

NOTE: Respondent must approve and resubmit their Proposal after an amendment has been posted by the Issuing Officer. If the Proposal was submitted before the amendment, all information will be saved. The Respondent only needs to read and acknowledge the amendment.

Instructions for Amendments: Answer the newly posted question in the Questions Section, and CERTIFY and SUBMIT your proposal again (if previously submitted).

Description

Required to View Event

Prerequisites Required to Enter Bid

14 January 2026

1. Bidder shall read and make certifications of the their Bid.

2. Bidder shall read and authorize to release information for their Bid.

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Buyer Attachments

1. 26CRDLWBBDODD-0008S - IMPACS Project Invitation & Registration.pdf

2. 26CRDLWBBDODD-0008S - RFQ FOR IMPACS.pdf

14 January 202614 January 202614 January 202614 January 202614 January 202614 January 2026 https://bids01.jaggaer.com/apps/Router/PublicEventDownload?file=U291cmNpbmdldmVudC8xMzY1MjgzLTE5NTQ2MTg1MjcyNkNSRExXQkJET0RELTAwMDhTIC0gSU1QQUNTIFByb2plY3QgSW52aXRhdGlvbiAmIFJlZ2lzdHJhdGlvbi5wZGY%3D&auth=MDpBRVMyI0NQNVp4a2IvSnkxZDNIUm81TGpka2h4M0V4bkpBZDlVSkVFUnk5WnZrK2l5eGZjOVRGNkRHUlU9 https://bids01.jaggaer.com/apps/Router/PublicEventDownload?file=U291cmNpbmdldmVudC8xMzY1MjgzLTE5NTQ2MTk0MDQyNkNSRExXQkJET0RELTAwMDhTIC0gUkZRIEZPUiBJTVBBQ1MucGRm&auth=MDpBRVMyI0NQNVp4a2IvSnkxZDNIUm81TGpka2h4M0V4bkpBZDlVSkVFUnk5WnZrK2l5eGZjOVRGNkRHUlU9

Questions Required Questions

Group 1: Form of Bid

Instructions: Bidder will read and answer the following questions. If there are exceptions to the terms, submit a question(s) in the Question and Answer Section with your exception.

1.1 Enter the Bidder's contact name, title, address, telephone number, and email address for questions regarding this solicitation.

1.2 Enter the Bidder's Sales Contact information.

1.3 Enter the Bidder's State or Foreign Country of Residence.

1.4 Enter the number of years the Bidder has been in business.

1.5 Number of years of experience with providing the types of goods and/or services sought by the solicitation.

1.6 Describe the level of technical experience in providing the types of goods and/or services sought by the solicitation.

1.7 List relevant examples of services similar to those sought by this solicitation that the Bidder has provided to other businesses or governmental entities.

1.8 The Bidder must provide resumes for all key personnel who will be involved in providing the goods and/or services contemplated by this solicitation. The following information must be included: Full Name, Education and/or Certification, Years of experience and employment history particularly as it relates to the requirements of the solicitation.

1.9

The selected service provider shall meet all of the technical specifications, both for equipment, method of application, and chemical specifications as described in Exhibit 1: Request for Bid, Silver Lake Aluminum Treatments, Technical Specifications, Silver Lake Aluminum Treatments.

Applications shall follow the approach and utilize the staging areas as described in Exhibit A (also attached) for each lake.

1.10

The Bidder shall provide references from three (3) previous customers or clients knowledgeable of the Bidder’s performance in providing goods and/or services similar to the goods and/or services described in this solicitation. Enter a contact person, telephone number and email address for each reference. Fill out the text box. If the Bidder wants to attach reference letters in the Vendor Attachments Section, enter "see attached" in the text box.

Group 2: Terms and Conditions

Instructions: Bidder will read and answer the following questions. If there are exceptions to the terms, submit a question(s) in the Question and Answer Section with your exception.

2.1 Bidder shall read the Specification Terms and enter a response.

2.2 Bidder shall read the Terms and Conditions for SERVICES and enter a response.

2.3 By submitting a response, each bidder acknowledges its acceptance of the terms and conditions of the contract template “DNR Standard Contract Conditions” and “General Conditions” found at http://www.iowadnr.gov/About-DNR/RFP-Bid-Lettings

Group 3: Payment Terms

Instructions: Bidder will read and answer the following questions. If there are exceptions to the terms, submit a question(s) in the Question and Answer Section with your exception.

3.1 Payment Terms - Per Iowa Code § 8A.514 the State of Iowa is allowed sixty (60) days to pay an invoice submitted by a Bidder. Does the Bidder agree to the terms?

3.2 What discount will the Bidder give for payment in 15 days? Enter the discount in the text box. If none, enter zero.

3.3 What discount will the Bidder give for payment in 30 days? Enter the discount in the text box. If none, enter zero.

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Product Line Items Product Line Items

There are no Items added to this event.

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Service Line Items Service Line Items

1. Aluminum Sulfate Treatment at Silver Lake # Item Name, Commodity Code, Description Allow

Alternates Qty. UOM Requested Service Delivery

S1 Mobilization/Demobilization (Base Proposal; Exhibit A) - 2026 Application 1 LS - Lump Sum

S2 Liquid Aluminum Sulfate (Alum) 2026 Application to Silver Lake

– North Zone 9,848 GAL - Gallon

S3 Liquid Sodium Aluminate 2026 Application to Silver Lake – North Zone 4,874 GAL - Gallon

S4 Liquid Aluminum Sulfate (Alum) 2026 Application to Silver Lake

– South Zone 5,452 GAL - Gallon

S5 Liquid Sodium Aluminate 2026 Application to Silver Lake – South Zone 2,698 GAL - Gallon

S6 Mobilization/Demobilization (Base Proposal; Exhibit A) - 2027 Application 1 LS - Lump Sum

S7 Liquid Aluminum Sulfate (Alum) 2027 Application to Silver Lake

– North Zone 9,848 GAL - Gallon

S8 Liquid Sodium Aluminate 2027 Application to Silver Lake– North Zone 4,874 GAL - Gallon

S9 Liquid Aluminum Sulfate (Alum) 2027 Application to Silver Lake

– South Zone 5,452 GAL - Gallon

S10 Liquid Sodium Aluminate 2027 Application to Silver Lake – South Zone 2,698 GAL - Gallon

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