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02. Soil Boring Quotes for SHA Boardwalk Project 14727 209 th St. N., Scandia, Minnesota 55073 Phone (651) 433 -2274 Fax (651) 433 -5112 http://www.ci tyof scandia.com March 5, 2025 Honorable Mayor and City Council 14727 209th Street N Scandia, MN 55073 Re: Scandia Heritage Alliance Boardwalk Geotechnical Evaluation Quote Dear Mayor and Council: In January 2025, we received quotes to complete a geotechnical evaluation of the wetland north of the Scandia Heritage Alliance project where a future boardwalk is planned to be constructed. The following is a quote summary: Contractor Total Quote American Engineering Testing $28,600.00 Braun Intertec $39,272.50 (Option #1) Both Contractors conducted site visits to determine whether the ice is thick enough to collect soil borings at this location and determined that their drill rigs would not be able to access the site to obtain these soil borings. Additionally, American Engineering Testing submitted their proposed boring collection to be completed in April 2025, which would not have been possible. Braun Intertec proposed an alternative Geotechnical Evaluation method containing one 50’ deep soil boring at the edge of the wetland, and additional swamp probes within the wetland to evaluate aid in determining the depth of soft organic soils. The following is a quote summary: Contractor Total Quote Bruan Intertec $17,760.00 (Option #2) Based on the summary above, we recommend that the Council award Option #2 to Braun Intertec in the amount of $17,760.00. 14727 209 th St. N., Scandia, Minnesota 55073 Phone (651) 433 -2274 Fax (651) 433 -5112 http://www.ci tyof scandia.com Please do not hesitate to contact me with any questions regarding this project at 651-308-1491. Sincerely, Isiah Bubany, P.E. Project Engineer Enclosures: Scandia Heritage Alliance Geotechnical Evaluation Quote Braun Intertec Corporation 11001 Hampshire Avenue S Minneapolis, MN 55438 Phone: 952.995.2000 Fax: 952.995.2020 Web: braunintertec.com AA/EOE January 28, 2024 Proposal QTB208877 Isiah Bubany, PE Bolton & Menk, Inc. 3507 High Point Drive North Building 1, Suite E130 Oakdale, MN 55128 Re: Proposal for a Geotechnical Evaluation Scandia Heritage Alliance Boardwalk South of 14727 209th Street North within the existing wetland Scandia, Minnesota Dear Mr. Bubany: Braun Intertec Corporation respectfully submits this proposal to complete a geotechnical evaluation for the Scandia Heritage Alliance Boardwalk Project at the referenced site. Project Information Per our email correspondence with Bolton & Menk, Inc. (Bolton & Menk), we understand the proposed project will include the construction of a boardwalk across the existing wetland located just south of the Scandia City Hall in Scandia, Minnesota. Figure 1 below exhibits the referenced project area. Figure 1. Proposed Project Area Figure provided Bolton & Menk, Inc., dated January 6, 2025. Bolton & Menk, Inc. Proposal QTB208877 January 28, 2025 Page 2 Purpose The purpose of our geotechnical evaluation will be to characterize subsurface geologic conditions at selected exploration locations, evaluate their impact on the project, and provide geotechnical recommendations for the design and construction of the proposed boardwalk. Scope of Services We propose the following tasks to help achieve the stated purpose. If we encounter unfavorable or unforeseen conditions during the completion of our tasks that lead us to recommend an expanded scope of services, we will contact you to discuss the conditions before resuming our services. Geotechnical Evaluation (Option #1) Site Reconnaissance Based on aerial photographs of the proposed project site, we determined it necessary to perform site reconnaissance of the site to evaluate site access and the thickness of the in-place ice covering the pond the proposed boardwalk would be crossing and where most of our soil borings are located. Based on our first site reconnaissance on January 14th, 2025, it was determined the ice thickness was not suitable for our drill rig to mobilize on. We propose to perform a site reconnaissance on a bi-weekly basis through February of 2025 to evaluate the ice thickness covering the existing pond. If the ice thickness does not reach a suitable thickness for our drill rig to mobilize on by the end of February 2025, refer to Geotechnical Evaluation Option #2. Site Access Based on a site visit, it appears the site will require a GeoProbe drill rig. Though it has limited speed and exploration depth compared to conventional truck and all-terrain vehicle drill rigs, the operator drives the GeoProbe rig by remote control and its smaller size allows access along and on the referenced existing wetland, navigation of more narrow and sloping paths, and has rubber tracks that lessen impacts to a variety of surfaces. We assume there will be no cause for delays in accessing the exploration locations. We are not including tree clearing, debris or obstruction removal, grading of navigable paths, or snow plowing. To facilitate access to the site, we propose to unload our GeoProbe drill rig at the property located east of the proposed boardwalk (14849 Oakhill Road North). Our fee for this project includes trips to the site to evaluate site access. Depending on access requirements, ground conditions or potential utility conflicts, our field crew may alter the exploration locations from those proposed to facilitate accessibility. Our drilling activities may also impact the vegetation and may rut the surface to access boring locations. Restoration of vegetation and turf is not part of our scope of services. Bolton & Menk, Inc. Proposal QTB208877 January 28, 2025 Page 3 Staking We will stake prospective subsurface exploration locations, as selected by Bolton & Menk, and obtain surface elevations at those locations using GPS (Global Positioning System) technology. For purposes of linking the GPS data to an appropriate reference, we request that you provide CAD files indicating location/elevation references appropriate for this project or give us contact information for the consultant that might have such information. Utility Clearance Prior to drilling or excavating, we will contact Gopher State One Call and arrange for notification of the appropriate utility vendors to mark and clear the exploration locations of public underground utilities. You, or your authorized representative, are responsible to notify us before we begin our work of the presence and location of any underground objects or private utilities that are not the responsibility of public agencies. Permits We will obtain a right-of-way permit with the City of Scandia (City) prior to beginning our fieldwork. We assume the City will waive permit fees as we will be completing the work for the City. Penetration Test Borings As requested, we will drill eight standard penetration test (SPT) borings for the project. We will perform standard penetration tests at 2 1/2-foot vertical intervals to a depth of about 15 feet, and at 5-foot intervals at greater depths. We propose to drill all eight standard penetration test borings for the project to a depth of 50 feet below the existing surface for a total drilling footage of 400 feet. The figure below shows an illustration of our proposed boring locations. The coordinates for the proposed boring locations were provided by Bolton & Menk. Bolton & Menk, Inc. Proposal QTB208877 January 28, 2025 Page 4 Figure 2. Geotechnical Evaluation (Option #1) - Proposed Boring Locations Figure extracted from Google Earth. To access proposed boring locations SB-7 and SB-8 as provided by Bolton & Menk, tree clearing would have to be performed. We propose to offset these boring locations to locations that are accessible to our GeoProbe drill rig without tree clearing. If this is not a desirable approach for the project, we will have to revise our proposal to include fees for tree clearing. If the intended boring depths do not extend through unsuitable material, we will extend the borings at least 5 feet into suitable material at greater depths. The additional information will help evaluate such issues as excavation depth, consolidation settlement, and foundation alternatives, among others. If we identify a need for deeper (or additional) borings, we will contact you prior to increasing our total estimated drilled footage and submit a Change Order summarizing the anticipated additional effort and the associated cost, for your review and authorization. Groundwater Measurements If the borings encounter groundwater during or immediately after drilling of each boring, we will record the observed depth on the boring logs. MDH Notification We are planning for the borings to be 25 feet or deeper. Therefore, the Minnesota Statutes requires us to both (1) submit to the Minnesota Department of Health (MDH) by mail a “Sealing Notification Form”, and (2) submit a Sealing Record after our completion of the borings. The Sealing Notification Form requires a signature of the current property owner, or their agent, and we need to submit this to the MDH prior to our mobilization to the site. We are attaching a copy of the Sealing Notification Form at the end of this proposal for your signature. Our proposal includes the fees for the MDH Sealing Notification and the Sealing Record. Bolton & Menk, Inc. Proposal QTB208877 January 28, 2025 Page 5 Borehole Abandonment We will backfill our exploration locations immediately after completing the drilling at each location. Minnesota Statutes require sealing temporary borings that are 15 feet deep or deeper. Based on our proposed subsurface characterization depths, we will seal 400 linear feet of borehole with grout. The attached Project Proposal shows the fees associated with the sealing. Sealing boreholes with grout will prevent us from disposing of auger boring cuttings in the completed boreholes. Unless you direct us otherwise, we intend to thin-spread the cuttings around the boreholes. If we cannot thin-spread cuttings, we will put them in a container left on site. We can provide off-site disposal of the cuttings for an additional fee. Over time, subsidence of borehole backfill may occur, requiring releveling of surface grades or replacing bituminous or concrete patches. We are not assuming responsibility for re-leveling or re-patching after we complete our fieldwork. Sample Review and Laboratory Testing We will return recovered samples to our laboratory, where a geotechnical engineer will visually classify and log them. To help classify the materials encountered and estimate the engineering properties necessary to our analyses, we have budgeted to perform the following laboratory tests. Table 1. Laboratory Tests Test Name Number of Tests ASTM Test Method Purpose Moisture content 14 D2216 Soil classification, moisture condition, and engineering properties Atterberg limits 4 D4318 Soil plasticity, shrink/swell potential, engineering parameters, suitability of soils for reuse Percent passing #200 sieve 4 D1140 Soil classification, and evaluate frost susceptibility Organic content 10 D2974 Evaluate suitability of soils for reuse We will determine the actual laboratory testing for the project depending on the encountered subsurface conditions. If we identify a laboratory testing program that exceeds the budget included in this proposal but provides additional value to the project, we will request authorization for the additional fees through a Change Order. Engineering Analyses We will use data obtained from the subsurface exploration and laboratory tests to evaluate the subsurface profile and groundwater conditions, and to perform engineering analyses related to structure and pavement design and performance. Bolton & Menk, Inc. Proposal QTB208877 January 28, 2025 Page 6 Geotechnical Evaluation (Option #2) As requested, we are providing an alternative method to obtaining information to aid in the design assumptions for the Scandia Heritage Alliance Boardwalk project which would be desired in the case that the ice thickness of the in-place pond does not reach a suitable thickness for our drill rig to mobilize on prior to the end of February 2025. This alternative method includes performing a SPT boring to a depth of 50 feet below the existing surface at a location accessible to our drill rig along the edge of the existing pond and includes having a two-person crew spend 8 hours out at the site pushing swamp probes to aid in determining the depth of soft organic soils. Penetration Test Borings For Geotechnical Evaluation Option #2, we propose to drill one SPT boring for the project. We will perform standard penetration tests at 2 1/2-foot vertical intervals to a depth of about 15 feet, and at 5-foot intervals at greater depths. The figure below shows an illustration of the proposed boring location we propose to drill along the outside of the existing pond. Figure 3. Geotechnical Evaluation (Option #2) - Proposed Boring Location Figure extracted from Google Earth. Sample Review and Laboratory Testing For Geotechnical Evaluation Option #2, we propose to return recovered samples to our laboratory, where a geotechnical engineer will visually classify and log them. To help classify the materials encountered and estimate engineering properties necessary to our analyses, we anticipate performing five moisture content tests, two organic content tests, two loss by washing through #200 sieve tests, and one Atterberg limit test. We will adjust the actual number and type of tests based on the results of our boring. Bolton & Menk, Inc. Proposal QTB208877 January 28, 2025 Page 7 Report We will prepare a report including: ▪ A CAD sketch showing the exploration locations. ▪ Logs of the soil borings describing the materials encountered and presenting the results of our groundwater measurements and laboratory tests. ▪ A summary of the subsurface profile and groundwater conditions. ▪ Discussion identifying the subsurface conditions that will impact design and construction. ▪ Discussion regarding the reuse of on-site materials during construction. ▪ Recommendations for preparing structure subgrades, and the selection, placement, and compaction of fill. ▪ Recommendations for the design and construction of the proposed boardwalk foundations. We will only submit an electronic copy of our report to you unless you request otherwise. At your request, we can also send the report to additional project team members. Schedule We anticipate performing our work according to the following schedule. ▪ Drill rig mobilization – within about 2 weeks following receipt of written authorization. ▪ Field exploration – 6 days on site to complete the work (Geotechnical Evaluation Option #1.) 2 days on site to complete the work (Geotechnical Evaluation Option #2). ▪ Classification and laboratory testing – within 1 to 2 weeks after completion of field exploration. ▪ Preliminary results – within 2 weeks after completion of field exploration. ▪ Draft report submittal – within about 3 weeks of completion of field exploration. ▪ Final report submittal – within 5 days of receiving comments on the draft report. If we cannot complete our proposed scope of services according to this schedule due to circumstances beyond our control, we may need to revise this proposal prior to completing the remaining tasks. Bolton & Menk, Inc. Proposal QTB208877 January 28, 2025 Page 8 Fees For Geotechnical Evaluation Option #1, we will furnish the services described in this proposal on a time and materials basis for an estimated fee of $39,272.50. For Geotechnical Evaluation Option #2, we will furnish the services described in this proposal on a time and materials basis for an estimated fee of $17,760. Table 2 provides a breakdown of the proposed fees. Table 2. Proposed Fee Breakdown Geotechnical Evaluation (Option #1) Fee Site Reconnaissance $2,662.50 Site Layout – Staking – Utility Clearance – CADD 1,535 Drilling Services 24,975 Geotechnical Soil Tests 2,200 Evaluation/Analysis/Reports 7,900 Geotechnical Evaluation (Option #1) Total $39,272.50 Geotechnical Evaluation (Option #2) Fee Site Reconnaissance $2,662.50 Site Layout – Staking – Utility Clearance – CADD 1,242.50 Drilling Services 4,045 Swamp Probes 3,030 Geotechnical Soil Tests 1,290 Evaluation/Analysis/Reports 5,490 Geotechnical Evaluation (Option #2) Total $17,760 Our work may extend over several invoicing periods. As such, we will submit partial progress invoices for work we perform during each invoicing period. General Remarks We will be happy to meet with you to discuss our proposed scope of services further and clarify the various scope components. We appreciate the opportunity to present this proposal to you. Please sign and return a copy to us in its entirety. We based the proposed fee on the scope of services described and the assumptions that you will authorize our services within 30 days and that others will not delay us beyond our proposed schedule. Bolton & Menk, Inc. Proposal QTB208877 January 28, 2025 Page 9 We will provide our services under the terms of the Master Subconsultant Agreement for Professional Services under Bolton & Menk, Inc. and Braun Intertec. To have questions answered or schedule a time to meet and discuss our approach to this project further, please contact Jesse Hill-Male at 763.248.0148 (jhill-male@braunintertec.com) or Matt Ruble at 952.995.2000 (mruble@braunintertec.com). Sincerely, BRAUN INTERTEC CORPORATION Jesse O. Hill-Male, EIT Staff Engineer Matthew P. Ruble, PE Vice President, Principal Engineer Attachments: Project Proposal QTB208877 MDH Notification Form We have selected the scope presented in this proposal below. The checked scope is accepted, and you are authorized to proceed. ☐ Geotechnical Evaluation (Option #1) ☐ Geotechnical Evaluation (Option #2)  Authorizer’s Firm Authorizer’s Signature Authorizer’s Name (please print or type) Authorizer’s Title Date Client:Service Description:Work Site Address: South of 14727 209th Street North within the existing wetland Scandia, MN 55073 Bolton & Menk, Inc. Isiah Bubany Attn: Accounts Payable 1960 Premier Dr Mankato, MN 56001 (952) 448-8838 Geotechnical Evaluation Description Quantity Units Unit Price Extension Phase 1 Geotechnical Evaluation (Option #1) Activity 1.1 Site Reconnaissance $2,662.50 126 Project Engineer 12.50 Hour 185.00 $2,312.50 1871 GEO Trip Charge 5.00 Each 70.00 $350.00 Activity 1.2 Site Layout - Staking - Utility Clearance - CADD $1,535.00 205 Site layout and utility clearance 5.00 Hour 115.00 $575.00 288 Project Assistant 2.00 Hour 100.00 $200.00 371 CADD/Graphics Operator 2.00 Hour 145.00 $290.00 5099 Trimble R8 Rover (horizontal and vertical), per hour 5.00 Each 80.00 $400.00 1862 UTIL Trip Charge 1.00 Each 70.00 $70.00 Activity 1.3 Drilling Services $24,975.00 9400 GeoProbe Services, per hour 55.00 Each 420.00 $23,100.00 9730 Grout with bentonite, materials per foot 400.00 Each 4.00 $1,600.00 1075 Construction Records, each 1.00 Each 275.00 $275.00 Activity 1.4 Geotechnical Soil Tests $2,200.00 1156 Atterberg Limits LL and PL, Single-Point, per sample 4.00 Each 130.00 $520.00 1166 Loss by Washing Through #200 Sieve, per sample 4.00 Each 100.00 $400.00 1174 Organic Content, per sample 10.00 Each 100.00 $1,000.00 1152 Moisture content, per sample 14.00 Each 20.00 $280.00 Activity 1.5 Evaluation/Analysis/Reports $7,900.00 138 Project Assistant 6.00 Hour 100.00 $600.00 126 Project Engineer 20.00 Hour 185.00 $3,700.00 130 Principal Engineer 5.00 Hour 245.00 $1,225.00 125 Project Control Specialist 1.50 Hour 150.00 $225.00 128 Senior Engineer 10.00 Hour 215.00 $2,150.00 Phase 1 Total:$39,272.50 Phase 2 Geotechnical Evaluation (Option #2) Activity 2.1 Site Reconnaissance $2,662.50 126 Project Engineer 12.50 Hour 185.00 $2,312.50 1871 GEO Trip Charge 5.00 Each 70.00 $350.00 Activity 2.2 Site Layout - Staking - Utility Clearance - CADD $1,242.50 205 Site layout and utility clearance 3.50 Hour 115.00 $402.50 288 Project Assistant 2.00 Hour 100.00 $200.00 371 CADD/Graphics Operator 2.00 Hour 145.00 $290.00 Page 1 of 201/28/2025 11:54 AM Project Proposal QTB208877 Scandia Heritage Alliance Boardwalk Proposal Total:$57,032.50 5099 Trimble R8 Rover (horizontal and vertical), per hour 3.50 Each 80.00 $280.00 1862 UTIL Trip Charge 1.00 Each 70.00 $70.00 Activity 2.3 Drilling Services $4,045.00 9400 GeoProbe Services, per hour 8.50 Each 420.00 $3,570.00 9730 Grout with bentonite, materials per foot 50.00 Each 4.00 $200.00 1075 Construction Records, each 1.00 Each 275.00 $275.00 Activity 2.4 Swamp Probes $3,030.00 126 Project Engineer 16.00 Hour 185.00 $2,960.00 1871 GEO Trip Charge 1.00 Each 70.00 $70.00 Activity 2.5 Geotechnical Soil Tests $1,290.00 1156 Atterberg Limits LL and PL, Single-Point, per sample 1.00 Each 130.00 $130.00 1166 Loss by Washing Through #200 Sieve, per sample 2.00 Each 100.00 $200.00 1174 Organic Content, per sample 8.00 Each 100.00 $800.00 1152 Moisture content, per sample 8.00 Each 20.00 $160.00 Activity 2.6 Evaluation/Analysis/Reports $5,490.00 138 Project Assistant 2.50 Hour 100.00 $250.00 126 Project Engineer 16.00 Hour 185.00 $2,960.00 125 Project Control Specialist 1.50 Hour 150.00 $225.00 130 Principal Engineer 4.00 Hour 245.00 $980.00 128 Senior Engineer 5.00 Hour 215.00 $1,075.00 Phase 2 Total:$17,760.00 Page 2 of 201/28/2025 11:54 AM Project Proposal QTB208877 Scandia Heritage Alliance Boardwalk Braun Intertec Corporation 11001 Hampshire Avenue S Minneapolis, MN 55438 Phone: 952.995.2000 Fax: 952.995.2020 Web: braunintertec.com AA/EOE January 28, 2025 Proposal QTB208877 Isiah Bubany, PE Bolton & Menk, Inc. 3507 High Point Drive North Building 1, Suite E130 Oakdale, MN 55128 Re: Minnesota Department of Health Well Sealing Notification Form Scandia Heritage Alliance Boardwalk South of 14727 209th Street North within the existing wetland Scandia, Minnesota Dear Mr. Bubany: Please have the property owner, representative or agent complete the “Well Owner” section only of the Minnesota Department of Health (MDH) Well Sealing Notification form below and return it to Braun Intertec along with the signed proposal. We will complete the remainder of the form and submit it to the MDH. NOTE: This form must be completed and returned to Braun Intertec prior to us scheduling the mobilization of our equipment and crews to the project site.