SALT Schedule of Materials Control

2025 SALT Schedule of Materials Control – Local Government Agency

Contents Introduction

Material Acceptance Summary Instructions

Material Acceptance Summary

Bituminous Quality Management ........................................................................................................................ 6-7

Bituminous Specialty Items

Cold Inplace Recycling (CIR), Stabilized Full Depth Reclamation (SFDR)

Grading and Base Construction Items .............................................................................................................. 10-13

Certified Ready-Mix Concrete .......................................................................................................................... 14-16

Concrete Plant and Field Materials

Concrete Pavement – Agency .......................................................................................................................... 18-19

Concrete Pavement – Producer/Contractor .................................................................................................... 20-21

Concrete Wearing Course for Bridges

Concrete Pavement Repair – CPR for 3U18

Dowel Bar Retrofit – (DBR)

Landscaping and Erosion Control Items

Chemical Items

Metals............................................................................................................................................................... 27-28

Geosynthetics, Pipe, Tile, Precast/ Prestressed Concrete

Electrical and Signal Equipment Items ............................................................................................................. 30-31

Brick, Stone and Masonry Units

Miscellaneous Materials

Approved/Qualified Products & Resources

Contacts............................................................................................................................................................ 35-37

Sample Sizes

Introduction

This Schedule of Materials Control (SMC) outlines the MINIMUM testing requirements for State Aid Funded and/or Federal Aid Projects OFF the National Highway and Trunk Highway System. Optional to this SMC is the

MnDOT Materials Control Schedule. Usage of either schedule must be defined in the project proposal.

The SMC – LGA serves as a guide for material testing with allowable acceptance “as directed by the Engineer” detailed in Specification 1501.1(1) – Authority of the Engineer. These testing rates are a minimum and additional test may be taken at the Engineer’s discretion. A minimal testing rate does not always ensure a quality product; field observations and attention to detail is crucial. Materials not listed on an approved products list may be sampled and tested as directed by the Engineer. Materials listed on a Qualified Products list may be accepted or tested at the discretion of the Engineer.

Federal Aid projects require Independent Assurance Inspection. Contact the MnDOT District IA Inspector when the job starts to provide the proper servicing of your project.

***Agencies using MnDOT Metro Inspection Services will be sampled at the current MnDOT Schedule of

Materials Control rates and will be billed accordingly.

***Contact the MnDOT District IA Inspector to provide servicing for your federal aid project.

Definitions Schedule of Materials Control

Schedule of Materials Control (SMC) are inserted into project proposals to direct how materials are to be sampled and tested. The SMC is updated yearly. Each SMC is project specific. Therefore, one needs to refer to their specific proposal.

Approved/ Qualified Products List

Products are “approved” when they have been found to routinely meet all applicable standards and specifications. The product is placed on the list based upon established successful manufacturer’s quality control and warranties, but the listing may expire or require periodic renewal to verify the product has not changed over time. The approval process for the individual product should specify any expiration requirement.

Testing may still be on at the Engineers discretion.

Certified Sources

Certified Sources must comply with each individual product’s defined “certification procedure”. Acceptance of products from certified sources follows the same sampling and testing as “approved/ qualified” products.

Quality control (QC): The activities performed by the Contractor/Producer that have to do with making sure the quality of a product or process meets the relevant contract requirements. All testing shall be performed by a certified tester.

Quality assurance (QA): The activities performed by the Department/Agency that have to do with making sure the quality of a product or process meets the relevant contract requirements. All testing shall be performed by a certified tester.

Verification Testing: Sampling and testing performed as called out herein to validate the quality of the product(s). Part of QA.

http://www.dot.state.mn.us/stateaid/construction.html#info http://www.dot.state.mn.us/products/index.html

Material Acceptance Summary Instructions

Material Acceptance Summary

For an electronic Word version of this form, please visit the State Aid Construction webpage at:

https://edocs-public.dot.state.mn.us/edocs_public/DMResultSet/download?docId=19623193 http://www.dot.state.mn.us/stateaid/construction/materials-ac-summary.doc

Bituminous Quality Management

The Contractor shall provide and maintain a quality control program as detailed in Specification 2360.2.G. The

Engineer shall review the quality control program for compliance. This shall be provided at the precon.

Yes

Type of Test Spec Section

(1)

Contractor / Producer – QC Testing Rates

Agency – QA Testing Rates No

St ar t- U p T e st in g

R at e s fo r th e st t o n s (2

Bulk Specific Gravity 2360.2.G.7.b 1 test per 500 tons 55 lb.

sample

3 full cylinder molds

(7)

(3) (10) 1 Verification Mixture Sample test per day, all Verification samples are from a split (QC/QA) sample.

Maximum Specific Gravity 2360.2.G.7.c Air Voids (calculated) 2360.2.G.7.d

Asphalt Content 2360.2.G.7.a

Adj. Asphalt Film Thickness (AFT) 2360.2.E.7.e

Gradation 2360.2.G.7.f

Fines to Effective Asphalt Ratio (calculated) 2360.2.G.7.a/f

Coarse Aggregate Angularity (CAA) 2360.2.G.7.g 1 test per 1000 tons

(4) (5) (6) (7) Fine Aggregate Angularity (FAA) 2360.2.G.7.h

Added AC/Total AC Ratio (calculated) 2360.2.G.7.a

P ro d u ct io n T e st in g

R at s

Bulk Specific Gravity 2360.2.G.7.b

1 test per 1000 tons 55 lb.

sample 3 full cylinder molds

(7)

(3) (10) Verification Mixture Sample test per day/ mix type, submit companion to the QC – CAA & FAA test results.

Maximum Specific Gravity 2360.2.G.7.c

Air Voids (calculated) 2360.2.G.7.d

Asphalt Content 2360.2.G.7.a

Adj. Asphalt Film Thickness (AFT) 2360.2.E.7.e

Gradation (minimum of 1 per day) 2360.2.G.7.f

Added AC/Total AC Ratio (calculated) 2360.2.G.7.a

Coarse Aggregate Angularity (CAA) 2360.2.G.7.g (4) (5) (7)

Fine Aggregate Angularity (FAA) 2360.2.G.7.h (4) (6) (7)

TSR 2360.2.G.7.i When directed by the Engineer

Aggregate Specific Gravity 2360.2.G.7.j

Mixture Moisture Content 2360.2.G.7.k As directed by the Engineer

Asphalt Binder (QA ONLY) 2360 (8) 1 qt. steel container for asphalt binder

Asphalt Emulsion (QA ONLY) 2357

(9) ½ gal plastic container for asphalt emulsion. (Tack)

Compaction / Density Requirements 2360.3.D Review special provisions

Small Quantity Requirements < 500 tons per project may be accepted by the Engineer without testing.

NOTES: Testing rates are minimum rates; additional testing is encouraged to ensure a quality product.

(1) Review Special Provisions & 2360.2G Mixture Quality Management.

(2) The testing rates apply only to mixtures that have not been tested on previous projects in the current year.

(3) The Agency shall witness a minimum of 1 (one) complete QC mixture sampling, splitting and test per day.

The Agency shall take possession of all split QA samples immediately. The Agency shall randomly submit one QA split sample to the District Lab for Verification testing and inform with contractor the following day of test number. Additional verification samples can be taken at any time or location. When additional verification samples are taken, the contractor must test the Verification Companion split of this sample and include the results in the QC program.

(4) The Contractor will retain the extracted gradation samples in containers with field identification numbers for a period of 10 calendar days. The Engineer will identify which extracted gradation sample is the

Verification Companion Sample and whether it is to be tested for coarse and fine aggregate angularity.

http://www.dot.state.mn.us/products/asphalt/index.html

(5) At start-up or new Mix Design: 2 tests/ day for a minimum of 2 days, then 1/day if CAA is met. If CAA > 8% of requirement, 1 sample/ day but test 1/ week. No testing required for Class A and B Aggregates.

(6) At start-up or new Mix Design: 2 tests per day for a minimum of 2 days, then 1/day if FAA is met. If FAA >

5% of requirement, 1 sample/ day but test 1/week.

(7) Random number generation and determination of random sample location shall be consistent with Section

5 of ASTM D3665. The Engineer may approve alternate methods of random number generation.

(8) During Asphalt Mixture Production (Field Verification): Shall be from a certified supplier. Obtain asphalt binder samples from a sampling valve located between the pump and the drum. Contractor personnel shall obtain samples, under the observation of a department representative, by random selection from shipments of material at the project site. The samples shall be taken from the first load and subsequently 1 per 1000 tons of liquid asphalt binder for each supplier and grade of asphalt binder per contract. For contracts with less than approximately 25 tons (one truck transport) of asphalt binder, sampling may be waived. A minimum of 1 gallon of binder must be drawn and wasted from the sampling valve before the actual sample is drawn. Sample shall be sent in for verification testing.

(9) During Mixture Production (Field Verification): Shall be from a certified supplier. The Contractor shall sample first shipment, then submit 1 per 50,000 gallons. Sample emulsified asphalt in clean ½ gallon plastic container with wide screw top and send to MnDOT Chemical Lab within 7 days of sampling. Sample all emulsified asphalt from the distributor. Sample shall be sent in for verification testing. No Samples required unless directed by the Engineer.

(10) Conduct random belt samples and test for aggregate quality as directed by the Engineer.

Bituminous Specialty Items

Type of Test Spec Contractor/Producer – QC

Testing Rates Agency- QA Testing Rates

Gradation 2363 3139.3

1 per 1,000 Ton with a minimum 1 per day.

1 per day. 35 lbs.

PASSRC & PASB

Micro-Surfacing

3139.5 Stockpile: 1/1,500 Tons (min 1/day)

Machine Hopper: 1/500 Ton (min 1/day) Machine

Hopper: 1/day, 30 lbs.

Seal Coat, Underseal & Otta Seal

3137.2B

Stockpile: 1/1,500 Tons (min 1/day) Chip Spreader Hopper: 1/day

1/day from Hopper. 30 lbs.

% Crushing – CAA 2363 3139.3

1 per 1,000 Ton with a minimum 1 per day.

1 per day from gradation test. 35 lbs. PASSRC & PASB

Moisture / Aggregate 2354 3139.5

Machine Hopper: 1/500 Tons (min 3/day)

1/day 2lbs Micro-Surfacing

Sand Equivalence 2354 1/day Test at Engineer discretion, 25 lbs.

Micro-Surfacing

Flakiness Index

Sample taken from first load on first day, submit to Agency: 30 lbs.

Agency will test at their discretion, see Lab Manual 1223 Bituminous Seal Coat & Bituminous Underseal

Bituminous Mixture 2353 3151.2G

1/500 Tons, min 1/day. %AC, Gradation, Max SpG, Adj.AFT

1/day, 20 lbs. 1 cylinder from truck box. UTBWC

PASSRC & PASB

Asphalt spot check: min 1/day -

Stone Matrix Asphalt –

SMA

Tests, %AC,gradation, Gmm, Gmb, Voids, VMA, CAA, Draindown, VCA, fines/effective asphalt. Tests: %AC, Gradation, Gmm, Gmb, Voids, VMA, CAA, VCA, fines/effective asphalt. Agency is not required to do drain down. Copy

MDR to Project Engineer and Grading & Base Engineer.

Lab Manual 1203, 1204, 1205, 1211, 1214, 1806, 1807, 1808, 1813, 1853, 1854, 1855, AI SP-2

AASHTO T305

Rate, (1/1000 tons, min.1/day) Agg SpG, mix moisture, TSR to be tested as directed by Engineer.

Submit companion 1 per day to agency: 3 full 6” by 12” cylinders

Asphalt Binder Tests Asphalt Emulsion List Asphalt Binder List

UTBWC

Asphalt Binder: Sample first load, then 1/250,000 gallons.

Sample size of 1 quart metal container.

Emulsified Asphalt: Sample first load, then 1/50,000 gallons.

Sample size of ½ gallon wide screw top plastic container.

Micro-Surfacing 2354

Seal Coat, Underseal & Otta Seal

Tack Coat 2357

PASSRC & PASB 3151

Asphalt Binder Rate 2354 Verify Application Rate 3/day Verify Application Rate 1/day

Micro-Surfacing

Fog Seal 2355

Verify Application Rate 1/day Verify Application Rate 1/day Seal Coat, Underseal &

Otta Seal

Bit Tack Coat 2357 http://www.dot.state.mn.us/materials/manuals/GBase/2017gbmanual11032017.pdf http://www.dot.state.mn.us/materials/manuals/GBase/2017gbmanual11032017.pdf

Specification 2215 – Cold Inplace Recycling (CIR), Stabilized Full Depth

Reclamation (SFDR) and Cold Central Plant Recycling Bituminous (CCPR)

Test Type Contractor/Producer QC

Testing Rates Agency QA Testing

Rates Grading & Base Manual/Form

Gradation SFDR (Simple) Pre-ground un-stabilized material

1 per mile – report sieves 2” & 3”

Run gradation at the discretion of the Engineer

.215 / 101 report sieve 2” & 3”

Gradation (Entire) (Material to be stabilized)

One per day, give split sample to the Engineer

Run gradation at the discretion of the Engineer

.215 / 101 report sieve 2”, 1.5”, 1.25”, 1”, ¾”, 3/8”,#4, #10, #30.

Gradation (Simple) (Material to be stabilized)

1 per mile for SFDR & CIR.

1 per 2,000 ton for CCPR.

Run gradation at the discretion of the Engineer

.215 & .293 / 101 report sieve 2” & 1.5” for SFDR, 1.5” and 1.25” for CIR

CIR & SFDR Depth Check – Unstabilized and Stabilized

None 2 per day .284 / 401

SFDR & CCPR Moisture – before injecting with bituminous, and

Base One

2 per lane mile of anticipated daily production and after rain. 1 per mile for SFDR after mechanical drying.

1 / 10,000 sqyds .245 Speedy tester not allowed.

Penetration Index (DCP) – SFDR only Unstabilized.

2 per mile .255 / 205

Calibrate: mineral stabilizing agent application rate.

Once using design rate per vane feeder.

Observe contractor calibration

.286 or .287

Moisture: before injecting liquid bituminous material

2 per lane mile of daily anticipated SFDR & one after rain or mechanical drying out

(disking, etc.).

none .281 / 105

Yield: Mineral Stabilizing Agent and/or Liquid Bituminous

Material

1 per transport load each type

1 per day each type .286 & .287 / 402 & 403

Compaction: Nuclear density for SFDR stabilized and CIR

10 per lane mile, (see note below).

Observe the Contractor. .282

Control Strip: SFDR Stabilized and CIR

Minimum of once per project Observe the Contractor.

Bituminous Material Samples . 1 per 50,000 gallons;

sample first load

1 quart each sample

Mineral Stabilizing Agent Samples

None 1 sample None

Foaming asphalt checks expansion ratio & half life

1 per load Observe the Contractor. .285

Moisture (stabilized) – before placement of next layer during curing.

2 per day until moisture stabilizes & placement of

HMA.

None Grading & Base Manual

Note: The Engineer may require a Contractor to perform additional nuclear density tests in areas that the Engineer believes are failing density requirements.

Grading and Base Construction Items (1 of 4)

Material Type Spec.

Contractor / Producer QC Testing

Rates

Minimum Required Agency QA Testing Rates

Verification Testing Sample

G ra d at io n

T e st in g (2

(3

Aggregate Surfacing 3138 1 / 1,000 CY

(CV)

stockpile gradation only required for material on hand.

> 250 yd3 (CV) or 500 Tons and < 2000 yd3 (CV) or 4000 tons. Material is a minimum of one lot

(5). Test two random samples from each lot and average.

> 2000 yd3 (CV) or 4000 Tons. Divide into lots with lot size (5) no greater than 2000 yd3 (CV) or 4000 Tons. Test two random samples from each lot and average.

1/source 30 lb.

Aggregate Base 3138

Shoulder Base Aggregate

Drainable Aggregate Base (OGAB & DSB)

Granular and Select Granular Material

(borrow/embankment) 3149.2B

1/10,000 CY

(CV) only required for material on hand.

1/40,000 yd3 (CV) 1/source

30 lb.

Stabilizing Aggregate 3149.2C

Reclamation

FDR

3135.2B None Test at Engineer’s discretion. Inspect for oversize chunks (+3”), after the motor grader has overturned the material

None

Granular Filter 3601.2B 1/source – before delivery on the project.

Only required for materials on hand. Spec

1906.2

1/ source 1/source 30 lb.

Backfill Materials 3149.2D

Granular Bedding 3149.2F

Aggregate Bedding 3149.2G

Coarse Filter Agg. 3149.2H

Filter Aggregate 3149.2J

Sand Cover 3149.2K

P ro ct o r

S p e ci fi e d D e n si ty

Non-Granular Material Used to determine optimum moisture & maximum density.

None 1 per major soil, subgrade prep specified density requires 100% of proctor density.

1 sample 25 lb.

Sa n d C o n e , N u cl e ar

D e n si ty o r

LW

D

Non-Granular Material For non-granular material, i.e., material that does not meet

3149.2B.1

AGENCY TESTING: Roadway Embankment: One test per 4,000 yd3 (CV) or if test rolled, One test per 10,000 yd3 (CV)

Transverse culverts & abutments: 1 test per every 2 feet of fill.

Structures and Longitudinal Trenches: One test per 500 feet of each structure per 2 feet per fill.

Sidewalks and Trails: 1 per 500 feet.

Subgrade Preparation: One per 25 road stations.

Grading and Base Construction Items (2 of 4)

Contractor / Producer

QC Testing Rates

Minimum Required Agency QA Testing Rates

Verification Testing Sample

P e n e tr at io n

In d e x

M e th o d

D C

P o r

LW

D

Aggregate Base

2211.3C

None

1 DCP tests per 500 yd3 (CV) or 1 per 1000 Tons. If test rolled, 1 test / 1,500 yd3 (CV) or

3000 Tons.

None

Shoulder Base Aggregate

Reclamation FDR 2215.3E 2215.2C

1 DCP test per 3,000 yd2. If test rolled, 1 test / 10,000 yd2

Walks & Trails 2521 1 per 500 feet of Sidewalk or Trail

Granular Materials Subgrade Preparation (for materials meeting

3149.2B1)

3149.2B

AGENCY TESTING:

Roadway Embankment: One test per 2,000 yd3 (CV) or if test rolled, One test per 6,000 yd3 (CV)

Transverse culverts & abutments: 1 test per every 2 feet of fill.

Longitudinal Trenches: One test per 500 feet of each structure per 2 feet per fill.

Structures / Manholes / Catch Basins: 1 test per every 2 feet of fill.

Sidewalks and Trails: 1 per 500 feet.

Subgrade Preparation: One per 25 road stations.

M o is tu re C o n te n t Te st D u ri n g

A ll

C o m p ac ti o n

M th o d s

(4

Aggregate Base, Shoulder, Surfacing &

Walks

3138 None

For 2118, 2211,2221, and 2521:

1 / 1,000 yd3 up to 10 Maximum

For 2451: 1 per structure, for multiple adjacent structures, may test once, use judgement

For Quality Compaction:

Test as directed by Engineer.

None

Drainable Aggregate Base (OGAB & DSB)

Reclamation FDR 2215.3E None 1 / 20,000 yd2

All Embankment Materials

None

1/10,000 yd3 up to 10 Maximum

Subgrade Preparation

1 per 25 road stations

P rc e n t

C ru sh in g

Particle Count (1)

1906.2 1 required for

Material on hand

1/source unless directed by Engineer, (required for 3138.2B & C, 3149.2C & G1, 3136.2B).

1 / source

Q u al it y

Aggregate Quality Tests

1 required for material on hand, Spec

1906.2

1/ source unless directed by Engineer 1 / source

30lb

D e p th

C h ck

Reclamation

FDR

2215 1/Mile. 1 per day unless directed by Engineer http://www.dot.state.mn.us/materials/gbmanual.html http://www.dot.state.mn.us/materials/gradingandbase.html http://www.dot.state.mn.us/stateaid/construction.html

Contractor / Producer

QC Testing Rates

Minimum Required Agency QA Testing Rates

Verification Testing Sample

Te st

R o lli n g

Test Rolling (6) 2111

The contractor shall perform test rolling at the top of all:

• Non-granular subgrade (2106)

• Granular subgrade that does not meet 3149.2.B.2 (2106)

• Base (2211) and shoulder base (2221)

• Non-Stabilized Full Depth Reclamation (FDR) (2215)

• Minimum 12’ width and 300’ length. Agency to observe test rolling.

Verification Testing Samples are companion split samples to the QA sample:

• Companion gradation, proctor, QA crushing, aggregate quality samples not required 1,000 tons or less.

• Include the laboratory companion with the first field sample.

• Include the field sample results with the laboratory sample.

• Laboratories with AMRL Accreditation are not required to submit laboratory companion samples.

• Carbonate aggregate materials require 50 lb. samples for the laboratory testing.

NOTES:

(1) Percent crushing test is not required when the material is crushed from a quarry or contains 25% or greater recycled materials.

(2) Submit a laboratory companion to the first Acceptance Gradation sample for a bituminous extraction, see 3138.2C. Full Depth Reclamation samples are not required.

(3) The Certification of Aggregates and Granular Materials procedure and documentation of testing locations is at the discretion of the Engineer.

(4) For quality compaction per spec 2106.3G.2, test at Engineer's discretion.

(5) Lot sizes may be adjusted by the Engineer. This may be good practice if parts of the project are taking place in separate areas or at separate times, such as many turn lane or excavation areas or separate project stages.

(6) The Engineer may elect, with the concurrence of the Contractor, to have the Contractor test roll per 2111, “Test Rolling”, material meeting the requirements of 3149.2.B, “Select Granular Material”, in lieu of spot compaction testing. If this method is adapted, the Contractor would be required to first place 3” of base on top of the Select Granular prior to test rolling. For areas failing test rolling the Contractor is required to remove the base and recompact the material, then place the base back, and retest roll. There is no additional compensation to the Contractor if this method is adapted. Additionally, the Select Granular is not accepted until passing test rolling has occurred.

* Review the Special Provisions. The Grading and Base Manual allows the nuclear density gauge, see pages 60 and 65.

NOTES:

Conversions: 1 ton = 0.55 yd3 (CV), 1 ton = 0.7 yd3 (LV), 1 yd3 (CV) = 1.8 tons.

Less than 500 tons (250 CY) may be accepted by the Engineer without testing.

http://www.dot.state.mn.us/materials/concretemanual.html http://www.dot.state.mn.us/materials/concreteforms.html

Grading and Base Construction Items (4 of 4)

Guidelines for Required Crushing & Aggregate Quality Tests

3149 Granular Materials

3138 Aggregate for Surface and Base

3136 Drainable Bases

Crushing

Yes, for Stabilizing Aggregate, Fine Aggregate Bedding and

Medium Filter Aggregate.

Test waived if material contains recycled at twice the minimum crushing requirement.

Not required for quarried sources.

Yes, for Class 5, 5Q & 6. Test waived if material contains recycled at twice the minimum crushing requirement.

Not required for quarried sources. Class 2 must contain

100% crushed quarry rock.

Yes. Not required for quarried sources.

Bitumen Content

At the discretion of the Engineer

At the discretion of the Engineer

Not applicable

LAR Not applicable Yes, if source is carbonate quarry and does not contain bitumen.

Yes

Insoluble Residue

Yes, if source is carbonate quarry and does not contain bitumen.

Yes, if source is carbonate quarry and does not contain bitumen.

Yes, if source is carbonate quarry.

Litho Exam & Shale

Float Test

Yes, for Medium Filter Aggregate

Yes, for Class 3, 4, 5, 5Q & 6, when not from quarried rock, and does not contain bitumen.

Yes, when not from a quarried source.

Testing procedures in the Grading & Base Manual.

Forms and worksheets at the Grading & Base website.

Gradation worksheets at the SALT Construction website.

**MAKE SURE TO FILL OUT THE REQUIRED PRELIMINARY AND FINAL

GRADING AND BASE REPORTS AND SUBMIT TO PROJECT ENGINEER.**

http://www.dot.state.mn.us/materials/gradingandbasedocs/Forms/form

001_08_043019.xlsx

Certified Ready-Mix Concrete (1 of 3)

The Prime Contractor is responsible to assure that all ready-mix concrete used is produced by an annually

Certified Ready-Mix plant as detailed in Specification 2461.3F.

Material Spec.

C o n cr e te

P la n t

P ro d u ct io n T es ti n g

R at e s

Test Type (Concrete Manual)

Contractor / Producer QC Testing Rates Form bridge 2406.2 2411.2 2461.2 2461.3 general 2301** 2452.2 2461.2 2461.3 2506.2 2511.2 2514.2 2520.2 2521.2 2531.2 2533.2 2545.2 2554.2 2557.2 2564.2 2565.2

Gradation (5-694.145) (5-694.148)

3126, 3131, 3137

For all JMF's & Bridge Deck Mix Designs Daily Concrete Quantity:

1 per fraction per source per day between 20 – 400 yd3. If over 400 yd3 per day, take a second gradation after the DAILY total exceeds 400 yd3.

Bridge Deck Concrete must have passing gradations prior to mixing.

Concrete Agg. Work sheet, Agg. Grad.

Control Charts, R-M Plant

QC

workbook.

R-M Plant

QA

Workbook

Sample ID

Card

For all other mix designs, Weekly Concrete Quantity:

1 per fraction per source per week between 20 – 400 yd3. If over 400 yd3 produced per week, take a second gradation after the WEEKLY total exceeds 400yd3.

Department Plant Monitor Testing Rates: Verification only Verification Sample: When weekly concrete quantity is ≥ 20 yd³:

1 per fraction per source per week, split and tested by both Agency and Contractor

Moisture Content (5-694.142)

QC rates:

1 every 4 hours When Daily

Concrete Quantity ≥ 20 yd3

QA rates: None

Test Type Agency QA Testing Rates (1)

Aggregate Quality (5-694.146)

Minimum of 1 per each fraction - use of MnDOT test results for the same 30-day time period is acceptable. For all bridge deck concrete poured during the month: Test monthly quality to 3137.2D2 for each coarse aggregate fraction. Designate 3137.2D2 on the sample card.

Gradation results will be included with the monthly quality tests.

Coarse Aggregate (% Passing 200)

(5-694.146)

Minimum Aggregate Sample Size All Aggregate Gradation and Quality samples require companions, double sample size

Aggregate Size Gradation Quality Moisture % -200 Course.Agg.

3/4" Plus, #4 30 lb. 50 lb. 2000 g 5000 g

3/4" Minus, #67 10 lb. 30 lb. 2000 g 2500 g

#7, CA-70 6 lb. 20 lb. 2000 g 2500 g

CIA to meet #67 6 lb. 20 lb. 500 g 500 g

CIA to meet JMF, FIA, CS, FS

500 g 20 lb. 500 g 500 g

CA-80, #89 1.1 lb. (500 g) 20 lb. 500 g 500 g

Fine Aggregate 1.1 lb. (500 g) 20 lb. 500 g

Certified Ready-Mix Concrete (2 of 3)

Spec. Test Type Agency QA Testing Rates (1) Form bridge 2406.2 2411.2 2461.2 2461.3 general 2301** 2452.2 2461.2 2461.3 2506.2 2511.2 2514.2 2520.2 2521.2 2531.2 2533.2 2545.2 2554.2 2557.2 2564.2 2565.2

C o n cr e te

F ie ld -T e st in g

R at e s

Sampling Locations for Air, Slump, Temperature and Cylinder Testing 2409 Concrete Cylinder ID Card

When submitting samples, record all field test results and Batch

Ticket

Number on the

Cylinder

ID Card.

First load each day per mix - Take sample after discharging approximately 1/4 yd3, stop further discharge until both slump and air content test are completed. The first load of concrete must have passing air content and slump prior to placement. Cast strength specimens from the same load as the air content and slump test. Test whenever adjustments are made to the mix. .

Subsequent tests - Sample from the middle portion of the load.

Air Content - Type 3 Concrete (5-694.541)

1 test per 100 yd3. Test first load each day per mix. Test when adjustments are made to the mix.

Slump (5-694.531)

Test first load each day per mix, then as necessary to verify passing slump. For Bridge Concrete: 1 test per 100 yd3. No testing required for slip form placement.

Air and Concrete Temperature (5-694.550)

Record temperature each time air content, slump or compressive strength specimen is performed/fabricated.

Compressive Strength

(5-694.511) Standard cylinder size is 4 x 8, use 6 x 12 with aggregate greater than 1 1/4".

Review 2461.3G.5 Test Methods and

Specimens.

General Concrete Grades F, G, M, P, and R: 1 set of 3 cylinders per 300 yd3 per mix per day. 2409

Concrete Cylinder ID Card

When submitting samples, record all field test results and

Batch

Ticket

Number on the

Cylinder

ID Card.

Bridge Concrete Grades B, S, X, Y HPC, SCC and Mass Concrete (MC):

1 set of 3 cylinders per 100 yd3, then 1 set of 3 cylinders per 300 yd3 per mix per day For Grades HPC, SCC and MC:

1 set of (56-day) cylinders per day

Agency will break 1 set of 3 cylinders at 28 days. Agency will cast 3 control cylinders, any additional control cylinders are the responsibility of the Contractor.

Cellular Concrete: 1 set of 4 cylinders (28 days) per day, fill in 2 equal lifts, do not rod, lightly tap the sides, cover and move to area with no vibration. Do not disturb for 24 hours.

NOTES:

(1) Review the requirements of 2461.3F Certified Ready-Mix Concrete, 2461.3G Concrete Placement and 5-

694.010 Inspector’s Checklist in the Concrete Manual.

*Small Quantity Requirements are for less than 20 yd3 per day Plant Monitoring is not required, but Concrete

Field Testing is required.

**Concrete Pavement: Use Certified Ready-Mix Concrete testing rates when: a) The entire concrete paving project is less than 3,500 cu. yd. b) When a secondary plant is used to provide minor work.

Certified Ready-Mix Concrete (3 of 3)

The Prime Contractor is responsible to assure that all ready-mix concrete used is produced by an annually

Certified Ready-Mix plant as detailed in Specification 2461.3F.

Guidelines

• The testing rates shown in this Schedule of Materials Control are minimums. Take as many tests as necessary to ensure quality concrete. Should circumstances arise on a project which makes the testing rate impractical, contact the Concrete Engineering Unit.

• All samples shall be taken in a random manner using an appropriate number generator.

• The first load of concrete for any pour must have passing air content and slump results, prior to placing.

• If batching or field adjustments are made, test the adjusted load for air content and if suspect, slump, before it gets into the work. The Engineer will determine if additional testing is required after each water adjustment made during slip form placement. Continue to test for air content and slump, if suspect, when test results are inconsistent or marginal.

• If any field test fails, reject the concrete or if the Producer adjusts the load to meet requirements, record the adjustments on the Certificate of Compliance. Retest the air content of the load, slump if required, and record the adjusted test results. Test the next load for air content and slump, if required, before it gets into the work.

• Material not meeting requirements shall not knowingly be placed in the work. If failing concrete inadvertently gets placed in the work, review either the MnDOT Standard Specifications for

Construction or contact the Concrete Engineering Unit for monetary deduction recommendations.

Best practices

• It is recommended that the Agency Plant Monitor be present during critical pours, such as superstructure or paving concrete (i.e., 3A21, S mixes, JMF mixes).

• It is recommended that the Agency representative continually monitor the progress of all concrete pours in the field and review Certificate of Compliances. It is not a recommended practice to only perform minimum testing requirements and leave the pour.

• It is recommended to make standard strength cylinders after the first load of concrete unless that is the only load of concrete for that mix that day.

• The Agency is responsible for verification sampling. For safety and consistency in sampling and splitting of the sample, it is recommended that the agency and the producer/contractor obtain the verification sample in tandem. This will allow the producer/contractor to witness the sampling process and take possession of the verification companion.

Concrete Plant and Field Materials

All materials must come from certified or qualified sources. All certified sources must state so on the delivery invoices. The most current list of certified/approved sources can be found at MnDOT Material website.

Materials listed on the Approved/Certified Products List are not required to be sampled but need to be listed on the Material Acceptance Summary detailed in the SALT SMC. Samples can be submitted as directed by the

Engineer.

C o n cr e te

P la n t

B at ch in g M at e ri al s

Material Spec.

No.

Agency QA Field Sampling Rate

Form No.

Portland Cement 3101 Shall be a Certified Supplier - For certified ready-mix and concrete paving sample rates: 1 sample when the plant is certified. Take additional samples f the plant changes sources or as the contract requires. The producer obtains a

5 lb. sample and stores the sample in a sealed container provided by the Agency and includes the supplier’s delivery invoice from which the sample is obtained.

24300 ID Card Cement Samples

Slag 3102

Blended Cement 3103

Fly Ash 3115 24308 Fly Ash

Admixtures (Acceleration, Retarding, Water- Reducing, Air-

Entraining, etc.)

For all concrete: 1 sample of Air Entrainment and Type A Water Reducer in a 1/2-pint plastic container provided by the Agency when the plant is certified. Take additional samples if the plant changes sources or as the contract requires.

The Producer should agitate the admixture tank prior to obtaining samples form dispensing tubes and store the samples in sealed plastic containers provided by the Agency.

2410 Sample ID Card

Water 3906 1 Non-Potable Water sample in a 1-gallon clean glass or plastic container from a questionable source. Clarified

Water: 1 per month during Department production

C o n cr e te

F ie ld M at e ri al s

Preformed Joint Filler 3702 Visual Inspection

2410 Sample ID Card

Preformed Elastomeric Type

1 per lot. Only materials from a qualified source. Silicone Joint Sealer 3722

Hot Poured Elastomeric Type

3723 Link to Approved Products List.

Burlap 3751 Visual Inspection

Colored Concrete Membrane Curing

Compound 3752 Visual Inspection - Use only from qualified source.

Membrane Curing Compound

Visual Inspection - Use only pre-approved curing compounds.

Plastic 3756 Visual Inspection - Must be white opaque and free from holes.

Refer to the "Metals" schedule for sampling requirements for concrete reinforcement.

Concrete Pavement – Agency (1 of 2)

(concrete manual)

Spec.

Concrete Paving Batch Plant

Agency QA Testing Certified Ready-Mix Plant

Agency QA Testing Form

Gradation (1) (5-694.145) (5-694.148)

Daily Concrete Quantity ≥ 500 Agency QA Testing Rates: Verification only

Verification Sample: -, *1 per fraction per source per day, split and tested by both Agency and Contractor

Daily Concrete Quantity ≥ 100 yd3 Agency QA Testing Rates:

Verification only Verification Sample: -, *1 per fraction per source per week, split and tested by both Agency and

Contractor

JMF

Concrete

Aggregate Workbook

Aggregate Moisture - QC Verification (2)

(5-694.142)

If w/c incentives apply: 1 per 1000 yd3 or every 4 hours, whichever is greater.

Take initial sample within the first 250 yd3.

If w/c incentives apply: 1 per 200 yd3 or every 4 hours, whichever is greater. Take initial sample within the first 100 yd3.

Concrete

W/C Ratio Work sheet

Water Content, Microwave Oven

Verification (3) (5-694.532)

Take initial sample within the first 250 yd3. At least one additional verification test should be taken if more than 1000 yd3 is produced in a day.

Take initial sample within the first 100 yd3. At least one additional verification test should be taken if more than 400 yd3 is produced in a day.

Coarse Aggregate, -200 sieve

(5-694.146)

Test Verification sample on the first day of production and each time the Contractor mobilizes the plant, changes the aggregate sources, or the cleanliness of the coarse aggregate is in question, then 1 per week randomly thereafter. -200 test may be performed at the lab instead at the plant at the discretion of the Engineer.

JMF

Concrete

Aggregate Workbook

Coarse and Fine Aggregate

Quality (4)

During concrete production: 1 randomly selected test each fraction every 20,000 yd3 of production. Split the Quality sample 4 ways: 1) Provide 2 quarters of the sample to the producer/contractor. 2) Submit the remaining sample to the lab for quality testing including testing the -200 sieve on the coarse aggregate.

Sample ID

Card

Alkali Silica Reactivity

(ASR) Testing

1 per paving project per sand source. Provide one 5 lb. sample of: cement, supplementary cementitious material (fly ash or slag), and sand. Write "Project Specific ASR Testing" on all 3 sample cards. ASR Testing is not required if the entire project is less than 3,500 cubic yards.

2410 24300 24308

Coarse Aggregate

Quality Testing of Incentive / Disincentive

If coarse aggregate quality incentives apply: Test the Class B aggregates for % absorption and Class C aggregates for % carbonate including any other test necessary to make those determinations. Sample the 2 largest fractions in accordance with the following table and 2301:

Coarse Agg Quality

Incentive / Disincentive Work sheet

Sample ID

Card

Coarse Aggregate Quality Incentive/Disincentive Sampling Rates

Plan Concrete Cubic Yards Samples per fraction

3,500 - 7,500 3

7,501 - 10,000 5

10,001 - 25,000 10

25,001 - 50,000 15

50,001 + 20

*Use Certified Ready-Mix Concrete testing rates when: a) The entire concrete paving project is less than 3,500

cu. yd. b) When a secondary plant is used to provide minor work.

http://www.dot.state.mn.us/materials/concretemanual.html

Concrete Pavement – Agency (2 of 2)

Test Type Spec. Concrete Field Testing - Agency QA Testing Form

Air Content before consolidation

R ev ie w

C o n cr te

M an u al

W eb si

1 correlation air test per day

Concrete Temperature

Record temperature each time air content, slump or strength test specimen is performed/fabricated by the Agency.

Flexural Strength Supply beam boxes or cylinder molds. Cure and test beams and cylinders

MnDOT standard beam box size is 6" x 6" x 20" unless others are approved by the Concrete Engineer.

2162 Test Beam Data

Opening to Traffic Strength

Supply beam boxes or cylinder molds for field control testing. Cure and test beams and cylinders.

Concrete Pavement Texture

Determine texture testing locations using random numbers. Observe Contractor Testing when possible.

Probing, Coring, Texture and MIT-Scan

T2 Report Thickness

Determine probing and coring locations using random numbers. Initial pavement at core locations and re-initial the sides of specimens after coring to clearly verify their authenticity. Field measure cores to the nearest 1/8”. Transport to the MnDOT Office of Materials and Road

Research for final thickness determination

Surface Smoothness/ Dowel and Tie Bar

Steel Location Observe Contractor Testing when possible

NOTES:

(1) All gradation samples shall be taken in the presence of the Agency, unless otherwise authorized by the Engineer. All samples shall be taken off the belt leading to the weigh hopper unless otherwise approved by the Engineer. All gradations and quality tests require companion samples. If Coarse Aggregate Quality Incentive / Disincentives apply:

The Agency may also use the QA samples for incentive / disincentive testing. Notify the Contractor/Producer to double the QC/QA sample size. If well-graded aggregate incentives apply: Use the Contractor's gradation results for well-graded aggregate incentive calculations as verified by Agency testing. Use the Well-graded Concrete Agg. Worksheet.

(2) If w/c incentives apply: Use aggregate moisture results for determining the water content to calculate the w/c incentive/disincentive. Use the Concrete W/C Ratio Calculation Worksheet and do not leave sample unattended.

Microwave oven verification testing to verify the w/c ratio is completed in conjunction with Agency aggregate moisture testing. Do not leave samples unattended.

(3) If w/c incentives apply: Microwave oven verification testing to verify the w/c ratio is completed in conjunction with Agency aggregate moisture testing. Do not leave samples unattended.

(4) Prior to concrete production: Obtain pre-production samples for quality testing at least 16 hours prior to concrete production. Samples may be taken from the stockpile and -200 test may be performed at the lab instead at the plant at the discretion of the Engineer. If the entire project is <3,500 yd3, pre-production sampling is not required.

Minimum Aggregate Sample Size

*companion required, double sample

Aggregate Size Gradation* Quality* Moisture % -200 C.Agg

3/4" Plus, #4 30 lb. 50 lb. 2000 g 5000 g

3/4" Minus, #67 10 lb. 30 lb. 2000 g 2500 g

#7, CA-70 6 lb. 20 lb. 2000 g 2500 g

CIA to meet #67 6 lb. 20 lb. 500 g 500 g

CIA to meet JMF 500 g 20 lb. 500 g 500 g

FIA, CS, FS 500 g 20 lb. 500 g -

CA-80, #89 500 g 20 lb. 500 g 500 g

Fine Aggregate 500 g 20 lb. 500 g -

Concrete Pavement – Producer/Contractor (1 of 2)

(concrete manual)

Spec.

Concrete Paving Batch Plant

Contractor/Producer QC Testing Certified Ready-Mix Plant

Contractor/Producer QC Testing

Gradation (1) (5-694.145) (5-694.148)

When > 250 yd3 produced/ day: 1 per

2500 yd3 per fraction per source. Take initial samples for aggregate gradation testing within the first 500 yd3.

Test the verification companion sample on the day the sample was taken.

When 20-400yd3 produced/ day: 1 per fraction per source. If over 400 yd3 per day, take a second gradation after the total exceeds 400 yd3.

Test the verification companion sample on the day the sample was taken.

Coarse Aggregate -200 sieve

(5-694.146)

Test the verification companion sample. Test these samples at the plant.

Aggregate Moisture QC Verification (2)

(5-694.142)

If w/c incentives do not apply: 1 per 1000 yd3, or 1 completed every 4 hours, whichever is the higher sampling rate.

If w/c incentives do not apply: 1 completed every 4 hours.

Water Content, Microwave Oven

Verification Review Concrete Manual

If w/c incentives apply: Obtain the plastic concrete sample at the plant. See Concrete Manual (5-694.532)

Unit Weight QC Test one load of concrete per day at the plant. See Concrete Manual (5-694.542)

Air Content QC (5-694.541)

Test the first load of concrete at the plant

Coarse Aggregate Quality

Test at Producer/Contractor Discretion

Unit Weight Test 1 load of concrete per day at the plant.

Air Content for Type 3 Concrete

(QC)

Test the first load of concrete at the plant.

Coarse Aggregate Quality Testing for

Incentive / Disincentive

3137 Test at the Contractor's discretion.

* Use Certified Ready-Mix Concrete testing rates when: a) The entire concrete paving project is less than 3,500

cu. yd. b) When a secondary plant is used to provide minor work.

http://www.dot.state.mn.us/materials/concretemanual.html

Concrete Pavement – Producer/Contractor (2 of 2)

NOTES:

(1) Performing testing on representative material at the end of the most recent day of production is allowed.

If well-graded aggregate incentives apply: Use the Contractor's gradation results for well-graded aggregate incentive calculations as verified by Agency testing. Washing the fine aggregate gradation (QC) sample is not required when the result on the -#200 sieve of the unwashed sample is less than 1.0%. Wash all fine aggregate

Verification Companion samples.

(2) Complete the initial moisture content and adjust the batch water prior to the start of concrete production each day. If weather conditions allow, performing moisture testing on representative material at the end of production the prior evening is allowed. Enter results into the batching system in real time.

Test Type Spec. Concrete Field Testing - Contractor QC Testing

Air Content before consolidation for Type 3 concrete

R ev ie w

C o n cr e te

M an u al

W eb si

1 per 300 yd3 or 1 per hour, whichever is less. Test first load each day per mix.

Slump Test slump if concrete is suspected to be outside of required slump range as directed by the Engineer.

Concrete Temperature

Record temperature each time air content, slump or strength test specimen is performed/fabricated by the Contractor.

Flexural Strength

For information only:

1 beam (28-day) per week per mix. 1 cylinder (28-day) per week per mix may be substituted at the discretion of the Engineer. Provide moist curing environments, fabricate beams or cylinders, deliver to curing site, and clean beam boxes

Opening to Traffic

For opening to traffic:

Make field control beams within the last hour of concrete poured each day.

Substitute field control cylinders for field control beams at the discretion of the Engineer. Maturity testing is allowed in lieu of field control cylinders or beams.

Fabricate beams or cylinders, deliver to curing site, and clean beam boxes.

Concrete Pavement Texture

Perform texture testing at locations determined by the Engineer in accordance with the Contract

Thickness Probe, scan and core at locations determined by the Engineer in accordance with the

Contract

Surface Smoothness Measure smoothness of the final concrete as required by the Contract. Perform all profiling in the presence of the Engineer unless otherwise approved by the Engineer.

Dowel Bar and Tie Bar Steel Location

For Concrete projects greater than 3500 yd3.

On the first day and each day of slip form pavement: (1) Verify the adequacy of the dowel bar anchoring by scanning seven random doweled contraction joints in each sublot. (2) Verify the presence and alignment of tie bar steel by scanning 75 lin. Ft. in each sublot.

If the Engineer determines the first day’s dowel bar anchoring and tie bar placement processes are acceptable, the Engineer may allow a reduction in scanned joints in each sublot as follows: (1) Verify the adequacy of the dowel bar anchoring by scanning four random doweled contraction joints per sublot. (2) Verify the presence and alignment of tie bar steel by scanning 25 lin. ft. out of every sublot.

http://www.dot.state.mn.us/materials/concreteforms.html http://www.dot.state.mn.us/materials/concretemanual.html http://www.dot.state.mn.us/materials/concretemanual.html

Concrete Wearing Course for Bridges

(Concrete Manual)

Spec.

Contractor/Producer QC

Testing Agency QA Testing Form

Gradation, Quality, Coarse

Agg -200 QC/Verification

(5-694.145) (5-694.146) (5-694.148)

Prior to production:

The Contractor shall provide the

Agency with: Aggregate pit numbers, 1 passing gradation result per fraction per source.

Test Agency companion samples are Contractor's discretion.

No quality tests are required.

Prior to production and each time aggregate is delivered to site: 1 gradation and quality per fraction prior to concrete production and each time aggregate is delivered to the site.

Identify quality samples with a “Q” on the Sample ID Card and the Quality companion sample.

Sample ID Card

Air Content - Type 3 Concrete

(Verification) (5-694.541)

None 1 per 15 yd3, Test at beginning of pour each day.

Weekly Report of Low Slump

Concrete Slump

(Verification) (5-694.531)

None

1 per 15 yd3 Test at beginning of pour each day. For concrete from a concrete mobil, allow mix to hydrate 5 minutes before slump test to assure all cement is saturated.

Compressive Strength

(5-694.511) None

1 cylinder (28 day) per 30 yd3, standard cylinder mold size is 4 x 8 inch.

2409 Cyl.

ID Card

Cement 3101 None

Each time cement is delivered to site. Obtain a 5 lb. sample.

Store sample in a sealed container and include the supplier’s delivery invoice from which the sample is obtained.

Sample ID Card

Admixtures 3113 None

Each time new lot/batch admixture is delivered to site:

Obtain a ½ pint sample. Store the sample in a sealed plastic container.

Sample ID Card

Test

Minimum Sample Size All gradation and aggregate quality tests require companion samples, double sample size. Samples taken at location identified on Contact Report located at plant.

Gradation 6 lb. for # 7, 500 g for CA-80 500 g for Sand

Quality 30 lb. for Coarse Aggregate 20 lb. Fine Aggregate

Concrete Pavement Repair – CPR for 3U18 and 3U58M

Test Type Spec.

Contractor/Producer QC

Testing Agency QA Testing

For volumetric batching only.

Forms

Gradation, Quality, Coarse Agg -200

Prior to production:

The Contractor shall provide the

Agency with: Aggregate pit numbers, 1 passing gradation result per fraction per source.

No quality test results are required.

Test companion samples at Contractor's discretion.

Gradation: Prior to concrete production and each time aggregate is delivered to the site.

1 per aggregate fraction prior to production and each time aggregate is delivered to the site.

Quality Testing & Coarse Agg -200:

1 test per aggregate fraction per source. The Agency may use the gradation results for the Quality

Samples as a substitute for 1 required field gradation. Identify quality samples with a “Q” on the

Sample ID Card and the Quality companion sample.

Sample ID Card

Air Content - Type 3 Concrete

(Verification)

Review Concrete Manual Website

None

1 per 15 yd3or 1 per 4 hours whichever results in the highest sampling rate. Test at beginning of pour each day.

Weekly Report of Low Slump

Concrete Slump

(Verification) None

1 per 15 yd3, Test at beginning of pour each day. Allow mix to hydrate 5 minutes before slump test to assure all cement is saturated.

Test slump if concrete is suspected to be outside of required slump range.

Compressive Strength

None

1 set of 3 cylinders (28 day) per 30 yd3. The Agency will cast up to three

(3) field control cylinders, standard cylinder mold size is 4 x 8 inch.

2409 Cyl.

ID Card

Type 1 Cement 3101 None

For Volumetric batching only:

Each time cement is delivered to site. Obtain a 5 lb. sample. Store sample in a sealed container and include the supplier’s delivery invoice from which the sample is obtained.

Sample ID Card

Admixtures 3113 None

Each time new lot/batch admixture is delivered to site: Obtain a ½ pint sample. Store the sample in a sealed plastic container.

Sample ID Card

Test

Minimum Sample Size All gradation and aggregate quality tests require companion samples, double sample size. Samples taken at location identified on Contact Report located at plant.

Gradation 6 lb. for # 7, 500 g for CA-80 500 g for Sand

Quality 30 lb. for Coarse Aggregate 20 lb. Fine Aggregate http://www.dot.state.mn.us/environment/erosion/certifiedvendors.html http://www.dot.state.mn.us/environment/erosion/certifiedvendors.html http://www.dot.state.mn.us/products/erosioncontrolandlandscaping/index.html http://www.dot.state.mn.us/products/erosioncontrolandlandscaping/index.html http://www.dot.state.mn.us/products/erosioncontrolandlandscaping/index.html http://www.dot.state.mn.us/products/erosioncontrolandlandscaping/index.html http://www.dot.state.mn.us/products/erosioncontrolandlandscaping/index.html http://www.dot.state.mn.us/products/erosioncontrolandlandscaping/index.html http://www.dot.state.mn.us/products/erosioncontrolandlandscaping/index.html…