1001.1 All requirements of Sec 106 will apply to material hereinafter specified. Material or processes requiring pre-qualification or pre-acceptance shall be in accordance with the applicable sections of these specifications. After approval, the material or process will be placed on either the qualified list or the pre-acceptance list (PAL) maintained on MoDOT’s web site by Construction and Materials. The contractor shall select materials or processes from the appropriate list for use in MoDOT work. Final acceptance may be based on field inspection. 1001.2 All packaged material shall be plainly marked showing the quantity and nature of the contents and shall be delivered intact. 1001.3 A description of the classification of deleterious material may be found in MoDOT’s EPG 106.3.2.71 on MoDOT’s web site. 1001.4 Chat will be defined as an aggregate waste material that was formed in the course of milling operations employed to recover lead and zinc from metal-bearing ore minerals. 1001.5 Crushed stone will be defined as the product obtained by the artificial reduction in the size of rock that has been mined or excavated from ledge formation. Chat as defined in Sec 1001.4 is not included. 1001.6 Gravel will be defined as the coarse granular material, generally considered as material retained on the No. 4 or No. 10 sieve, but may include finer sizes, resulting from the natural disintegration and abrasion of rock, or from processing of weakly bound conglomerate. Gravel may include such material that has been further reduced in size by artificial means. 1001.7 Porphyry will be defined as a fine-grained, dense, igneous rock generally occurring in the Missouri counties of Iron, Madison, St. Francois and their adjacent counties. 1001.8 Wet bottom boiler slag will be defined as a hard, angular by-product of the combustion of coal in wet bottom boilers. 1001.9 Sieves specified for gradation requirements shall have openings as prescribed in AASHTO M 92.
1001.10 Storage and Handling of Aggregate. Aggregate shall be produced, handled and stockpiled to
minimize segregation, degradation and contamination. Regardless of the method of storage and handling, all aggregate that is segregated, degraded or contaminated to the extent that the aggregate does not meet specifications, will be considered unacceptable. Aggregate may be reconditioned by any method that produces satisfactory material.
1001.11 Approval of Aggregate Sources. All sources of aggregate shall be evaluated by the engineer for initial
approval and source approval as herein prescribed, prior to acceptance of aggregate from that source.
1001.11.1 Sources of crushed stone shall be evaluated for initial approval on a ledge by ledge basis. Each
exposed ledge will be identified, and the engineer will describe the ledge boundaries. Only identified ledges shall be used in the manufacture of the final product. A sample for initial approval will be required from each ledge. Resampling will be required if source approvals indicate a significant change has occurred.
1001.11.2 Source approvals will be required a minimum of every year. Source approval samples will be required
for each unique combination or ledges. Resampling will be required at closer intervals if, in the judgment of the engineer, any significant change has occurred to the source. Samples of aggregate for source approval shall be taken while the engineer is present.
1001.11.3 Sources approval of natural sand, gravel and manufactured lightweight aggregate shall be evaluated
as the final product .
1001.11.4 Sources of aggregate such as chat, slag and other by-products from previously produced material or
any other undefined sources will be evaluated on an individual basis.
1001.12 Mining By-Product Aggregate. Chat may be furnished under the following requirements.
1001.12.1 Chat used in hot, warm, or cold mix asphalt, slurry seal, microsurfacing, or in epoxy seal delivered to
MoDOT projects or property shall have a total lead content less than 4,500 ppm as determined by EPA Method 3050B, Acid Digestion of Sediments, Sludges, and Soils. Testing shall be conducted a minimum of once per year per source/location of chat.
1001.12.2 Chat used in Portland cement concrete, granular road base, flowable fill, stabilized road base, ice
control material, or chip seal delivered to MoDOT projects or property shall have Synthetic Precipitation Leaching (SPLP) testing conducted using EPA SW-846 Method 1312 as required by 40 CFR 278. The leachate testing results shall not exceed the National Primary Drinking Water Standards for lead and cadmium and the gresh water chronic National Recommended Water Quality Criterion for zinc of 120 ug/1. Testing shall be conducted a minimum of once per year per source/location of chat.
1001.12.3 Test reports shall be submitted to Construction and Materials prior to chat being used on any MoDOT
project or property. The report shall identify the location of the stockpile, date of sample, and specific test results as required in 40 CFR 278. Attached to the report shall be a certification from the supplier stating that the material furnished does not exceed the lead amounts specified in 40 CFR 278. The Engineer will maintain copies of laboratory test results and certifications for a minimum of three years.
1001.12.4 The supplier shall also provide a summary at the end of each calendar year that identifies the quantity
and location of chat shipped for use on MoDOT projects.
1001.13 Dust Suppressants. Approved dust suppressant additives may be used during the crushing or aggregate
handling process provided there is no detrimental effect to the aggregate or subsequent products made from the affected aggregate.
1001.13.1 Manufacturer and Brand Name Approval. Prior to approval and use of a dust suppressant additive,
the manufacturer shall submit to Construction and Materials a certified test report from an approved independent testing laboratory showing specific test results when tested in accordance with MoDOT Test Method TM 62. The certified test report shall contain the manufacturer's name, brand name of material, date tested, date of manufacture and dosage rate of the additive used. In addition, the manufacturer shall submit to Construction and Materials a sample representing the additive tested by the independent testing laboratory and accompanied by a material data sheet, an MSDS showing the brand name, composition or description of the product, the normal and maximum recommended dosage rates, the manner of identification on containers and a copy of the infrared spectrum. The manufacturer shall certify that the material, when used at or below the maximum dosage rate, does not affect the properties of the aggregate or subsequent products made from the treated aggregate. The manufacturer shall also guarantee that as long as the material is furnished under that brand and designation, the material will be of the same composition as originally approved and will in no way be altered or changed. Upon approval of the additive, the manufacturer and brand name will be placed on a list of qualified dust suppressant additives for aggregate.
1001.13.2 The aggregate supplier shall keep the inspector advised of the use of any dust suppressant material
and shall provide for the inspection of such facilities. No dust suppressant shall be applied above the manufacturer's maximum recommended rate.
1001.14 Producer Quality Management Plan
1001.14.1 Scope. This specification covers the acceptance criteria for material items produced under the
producer Quality Management Plan (QMP). The producer shall develop a QM plan for MoDOT's acceptance as defined by one of the following:
a.Producer QC and membership in an industry recognized audit program.
b.Producer QC and independent QA testing.
1001.14.2 MoDOT shall perform audits including testing, inspection, and documentation review. QC testing,
independent assurance testing, documentation, and conformance to product specifications may be subject to verification by MoDOT at the production facility or at the jobsite. MoDOT may audit the QMP of the producer at any time.
1001.14.3 Quality Management Requirements. The producer's QMP shall include the minimum following
requirements:
a.Frequency of QC sampling and testing.
b.Frequency of the producer's QA sampling, testing and identification of a third party testing firm if applicable.
c.Organizational structure of QC staff, job duties, and responsibilities including the identification of a QC manager.
d.Method of documenting product compliance. The producer shall provide documentation of the material meeting specification.
e.Type of material to be produced.
f.An independent dispute resolution testing firm (company name), contact person, address, and phone number.
g.A process for tracking deficient work and corrective actions in accordance with Sec 1001.14.8.
h.A process for addressing non-conforming work and corrective action requests in accordance with Sec 1001.14.9.
i.A list of hold points for QC in accordance with Sec 1001.14.10.
j.A list of MoDOT hold points in accordance with Sec 1001.14.10.
1001.14.4 Third Party Resolution. The third party shall be independent of the producer, contractor, MoDOT,
consultants, and all project subcontractors or suppliers. All testing of material for dispute resolution shall be performed by a laboratory that is AASHTO Accreditation Program certified in the areas of the material being tested.
1001.14.5 Testing Personnel. Where applicable, testing shall be performed by individuals who are certified by
the MoDOT Technician Certification Program or an accredited laboratory.
1001.14.6 Record Retention. The producer shall maintain copies of the plant QMP, applicable AASHTO,
ASTM, MoDOT, and/or LPA standards and approved production drawings. The records shall include information related to all components used to produce final product such as aggregate tests, steel certifications and mill tests, PAL numbers, QC test results and other material component documentation such as the bill of lading for material used in the production of the finished product. Records related to QC tester qualifications shall be retained. Records shall be retained for a minimum of three years and provided to the engineer in electronic form upon request.
1001.14.7 Producer Quality Assurance. When required, QA testing by a third party shall be performed at the
frequency required in each specification. Participation in an industry recognized auditing organization may be substituted for a third party QA testing.
1001.14.8 Control fo Deficient Work. Deficient work is considered work that is found to be not specification
compliant by QC. Deficient work may be corrected to be specification compliant as defined in the QMP. It is the responsibility of QC to identify, document, and correct deficient work. When QC personnel discovers deficient work that cannot be corrected the work becomes non-conforming. For non-conforming work, QC shall submit a Non-Conformance Report (NCR) to the engineer and contractor for acceptance or rejection.
1001.14.9 Control of Non-Conforming Work. Non-conforming work are items that are not compliant with the
specifications and have gone through the QC process undiscovered or uncorrected. When non-conforming work is identified by QC, independent QA, MoDOT QA testing, or auditing of the contractor, a solution will be proposed by the producer in writing and approved or rejected by both the engineer and contractor.
1001.14.9 1 Reoccurring non-conforming work shall be addressed by the producer and Construction and
Materials Division by one of the following methods:
a.The producer develops a corrective action plan.
b.Alteration of the QMP by the producer with the engineer's approval.
c.Review producer's QC results with producer's associated independent organization. Producer to be re-audited by independent organization.
1001.14.10 Hold Points
1001.14.10 1 Hold points are events that require approval prior to continuation of work. Hold points occur at
definable stages of work or progress phases when the succeeding work depends on acceptance of the preceding work. QC staff shall provide complete inspection reports and checklist to MoDOT personnel prior to all MoDOT hold points.
1001.14.10 2 QC hold points are established by the QMP for compliance verification prior to any MoDOT hold
point. At a minimum, a QC hold point shall occur just prior to or simultaneous with each MoDOT hold point.
1001.14.10 3 A list of MoDOT hold points will be determined by the engineer. The engineer may make
changes to the MoDOT hold point list at any time. Following a MoDOT hold point inspection, all non- conforming work identified by MoDOT shall be corrected prior to continuing work and a new hold point shall be scheduled.
1001.14.10 4 MoDOT may waive hold points at any time. Waivers will be in writing sent to the producer as
soon as possible from the engineer.
Referenced in this section
Get an email when 1001 changes
Missouri revises spec sections through supplementals and new editions. We check this one every week and email you the day it changes. Free, no account.
Source: Missouri Standard Specifications for Highway Construction, 2026 (Oct) Edition. Pages 548–551 of 874. View official source ↗