quality management plan - mammoth lakes, california

TOWN OF MAMMOTH LAKES

QUALITY MANAGEMENT PLAN

SR-203 (North Main Street) Sidewalk and Safety Project

Jamie Robertson, Town of Mammoth Lakes

5/5/2016

Submitted May 5, 2016

Town of Mammoth Lakes SR-203 (North Main Street) Sidewalk and Safety Project Page 1

QUALITY MANAGEMENT PLAN FOR CONSTRUCTION PHASE

I. Introduction

SR 203 (North Main Street) Sidewalk and Safety Project is located in Mammoth Lakes, Mono County, California. The highway is a four lane conventional highway, reducing to a two-lane highway after turning onto Minaret Road. The project improves pedestrian connectivity by constructing a sidewalk to meet current ADA and Title 24 California Code of Regulations and to reconstruct two existing retaining walls, located along the north shoulder of State Route 203 from the intersection of Lake Mary Road (PM 4.8) to Mountain Boulevard (PM 5.1). The project improvements include:

Construction of a sidewalk with curb and gutter on SR-203, from Minaret Road to Mountain Boulevard on the westbound side

Construction of six (6) ADA-compliant ramps, located at the intersection of Lake Mary Road/Minaret Road, Main Street/Viewpoint Road, and Main Street/Mountain Boulevard

Construction of one (1) ADA-compliant bus stop along the northern side of SR-203 (Main Street/Mountain Boulevard)

Minor asphalt concrete work adjacent to the concrete curb and gutter

Remove two (2) retaining walls and construct two (2) new retaining walls (soil nail) within the Caltrans right of way

Installation of lighting, following Town Standards, Section 401 Light Standard

Installation of drainage improvements, including storm drains, pipe culverts, and drainage inlets

Modify/relocate an existing water lateral and sewer pipe with manhole

The project is a federal-aid project for an estimated construction total of $3,015,000. Funding from the State Transportation Improvement Program (STIP) will provide $2,000,000 for construction costs and construction engineering for the 2015/2016 Fiscal Year. Remaining funds will be provided by the Town of Mammoth Lakes and private developers.

II. Quality Management Approach

A. General roles and responsibilities

The Quality Management Team consists of a Quality Manager, Quality Inspector, and an independent testing laboratory provided by the Contractor. The Quality Manager (QM) will oversee, document, and report all concerns with schedule, performance, and cost of project quality requirements. The QM shall consistently communicate with the Resident Engineer and Caltrans Oversight Engineer. The Quality Inspector will be responsible for the overseeing all inspections of the soil nail wall operation, backfill, compaction, electrical conduits, drainage facilities, utilities, asphalt concrete and concrete work. The Independent Testing Laboratory (provided by the Contractor) shall be responsible for nuclear field density tests (Compaction), compaction strength tests (concrete strength), testing of asphaltic concrete, and testing of grout. The results of testing will be analyzed by the Quality Inspector and Quality Testing Technicians (from the Independent Testing Laboratory). Should a discrepancy arise in the results, the Town will employ a secondary independent laboratory for verification.

The Quality Management Team shall implement quality processes and procedures, following the Construction Manual and the Construction Manual Supplement for Local Agency Resident Engineers. Quality control shall include reviews, checks, tests, and inspections of the work processes, procedures, inputs and outputs. Quality control will be a continuous process that cannot be excluded from any part of the construction activities performed.


B. Records and documentation (Files, submittal, reports, closeouts, etc.)

Quality records are documents that document results of design reviews, inspections and tests, and include all other related documents. Quality records are considered valid only if stamped or signed by an authorized individual. Corrections or revisions to quality records shall receive the same level of review and approval as the original document. Quality records and other project documents shall be properly identified, collected, indexed and stored in a manner that precludes damage, loss or deterioration. Hard copies and electronic copies of quality records and other documents will be maintained by the Town of Mammoth Lakes. Storage of the hardcopy documents will be protected from exposure to water, fire, wind or other damaging environmental effects as is practical, stored at the Town of Mammoth Lakes’ Offices at 437 Old Mammoth Road, Mammoth Lakes, CA 93546. Electronic documents will be maintained on the Town of Mammoth Lakes’ server with automated backup to prevent loss of documents. Quality records and other project documents will be identified by title, date and contract number. No documents will be stored on-site but secured at the Town of Mammoth Lakes’ Offices. The following items will be maintained throughout the SR-203 (North Main Street) Sidewalk and Safety Project:

Meeting minutes

Contractor Emergency Contacts

Requests for Information

Submittals

Labor Compliance and EEO Records

Change Orders

Field Memos

Inspector’s Daily Report

Daily Photo Log

Concrete Compressive Strength Tests (with Summary Sheet)

Nuclear Field Density Tests (with Summary Sheet)

Permits (Encroachment Permit for Contractor and Town of Mammoth Lakes)

Testing Results from Pull-out Tests

Soil Nail Wall Design

Geotechnical Reports

Schedules The Town of Mammoth Lakes will provide weekly reports to Caltrans regarding summary of work performed, issues encountered, change orders and field memos completed. The Town of Mammoth Lakes will provide a hard copy and electronic copy of all files upon the completion of construction. The Quality Manager will perform audits in the field and of files to verify the correct version of plans and specifications are being used.

C. Caltrans Standard References

The Town of Mammoth Lakes will refer to the following manuals during construction: 1. Construction Manual Supplement for Local Agency Resident Engineers 2. Local Agency Structure Representative Guidelines (for projects involving structures)

III. Personnel

A. Quality Management Team

The Quality Management Team will consist of a Quality Manager (QM), Quality Inspector (QI), and an Independent Testing Laboratory provided by the contractor. Staffing levels will be adjusted on an as needed basis depending on the work being accomplished each day, with all work being reviewed, inspected and tested according the Quality


Management Plan. The Quality Management Team shall consist of Town of Mammoth Lakes’ staff and an independent testing laboratory when the bid is awarded. An individual from the Quality Management Team will remain on-site during all hours of construction. Work will not be permitted to proceed without necessary personnel inspecting and testing the materials and workmanship during construction.

B. Organization and Staff Activities for Federal-Aid Projects

The following outlines the roles and responsibilities of personnel and agency responsibilities: Caltrans Project Engineer – Brian McElwain Responsible for the administration of the SR-203 (North Main Street) Sidewalk and Safety Project Caltrans Oversight Engineer – Truman Denio, Nick Sprague Responsible for ensuring Caltrans standards on-system highway projects and directly coordinating with Town of Mammoth Lakes staff Resident Engineer – Haislip Hayes (Town of Mammoth Lakes) Responsible charge of the SR-203 (North Main Street) Sidewalk and Safety Project:

Resident Engineer is a licensed as a Professional Engineer in the State of California.

Resident Engineer has ten years of experience in construction management for transportation related projects.

Quality Manager – Jamie Robertson (Town of Mammoth Lakes) Responsible for managing the Project and updating records and documentation:

Quality Manager will report directly to the Resident Engineer and the Caltrans Oversight Engineer.

Quality Manager will have no responsibilities in the production of the Work.

Quality Manager will be responsible for collection and distribution of all released-for-construction plans, approved shop drawings, approved requests for information with changes to plans, specifications, change orders and field memos. Quality Manager will keep all hard copy of approved documents and keep electronic copies of approved documents on the Town of Mammoth Lakes’ server.

Quality Manager will notify the Quality Inspector of upcoming inspections.

Quality Manager will be responsible for setting weekly meetings with Contractor and compiling meeting notes.

Quality Manager will do Labor Compliance, Disabled Business Enterprises, Equal Employment Opportunity, Civil Rights.

Quality Manager has four years of experience in construction management and documentation for transportation related projects.

Quality Inspector – Ron Fansler (Town of Mammoth Lakes) Responsible for the inspection and testing of the construction work and supervising quality testing:

Quality Inspector will report directly to the Quality Manager.

Quality Inspector will have no responsibilities in the production of the Work.

Quality Inspector has areas of expertise for soils, drainage, utilities, structural concrete, structural steel, electrical, concrete, traffic asphalt and roadway.

Quality Inspector will have sufficient experience to perform the quality inspections related to the work. QI has forty five years of construction experience with seventeen years in the inspection of soils, drainage, utilities, structural concrete, structural steel, electrical facilities, asphalt concrete, and concrete. QI possesses ICC Certifications in structural concrete, structural masonry, and structural steel and bolting. QI is a qualified as a Commercial Building Inspector and an ACI Field Testing Technician Grade 1.


Quality Testing Technicians Responsible for the testing of materials and workmanship to verify quality:

The Quality Testing Technicians will report directly to the appropriate Quality Inspector and Quality Manager.

The Quality Testing Technicians will have no responsibilities in the production of the Work.

The Quality Testing Technicians will have sufficient experience and education to perform the required quality testing during construction of the work. Quality Testing Technicians will have appropriate certification by recognized certifying agencies such as ACI, ICC, NICET, or Caltrans.

The independent testing laboratory and quality testing technicians will be provided by the Contractor and shall be a Caltrans certified testing lab. Resumes have not been included. The Town of Mammoth Lakes will submit resumes and necessary certifications prior to construction. Non-Conforming Work It is important to note that the key quality staff listed above has sufficient authority and organizational freedom to identify quality problems and to initiate, recommend, provide, and verify implementation of the solutions. The Quality Management staff does not report to and is not under the authority of any design or construction staff that is engaged in production of the Work. The Quality Management staff has full authority to stop work if quality is being compromised. The Quality Management staff shall remain cognizant of the contractor’s need to anticipate and facilitate the schedule, maintaining the budget, and improving the delivery performance. The Quality Manager and Quality Inspector will oversee all construction quality assurance activities. The Town of Mammoth Lakes will require an independent testing laboratory as part of the contractor’s bid and ensure technicians are added as needed to conduct tests with the independent lab.

C. Materials and Testing

1. Required Tests

The following are the required tests for the SR-203 (North Main Street) Sidewalk and Safety Project:

Required Tests - TABLE 1

Materials to be Sampled or Tested

Typical Test Methods Description or Comments

Freshly-Mixed Concrete (Sampling)

ASTM C172, C685 CT 539

AASHTO T141, M157

This describes a method to sample freshly-mixed concrete.

Freshly-Mixed Concrete (Testing)

ASTM C143 AASHTO T119

This test determines the slump of the freshly-mixed concrete.


ASTM C231 CT 504

AASHTO T152

This test determines the air content of freshly-mixed concrete (pressure method).


ASTM C138 CT 518

AASHTO T121

This test determines the unit weight of freshly mixed concrete.


ASTM C39 CT 521

AASHTO T22

This test is used to fabricate 6” x 12” concrete cylinders. Compressive strengths are determined, when needed.

Soils and Aggregates

(Testing)

ASTM D2922 CT 231

AASHTO T238

This test determines field densities using the nuclear gage.


(Testing)

ASTM D3017 CT 231

AASHTO T239

This test determines the water content using the nuclear gage.

Asphalt Concrete AASHTO T 27 This test method determines the particle size distribution of fine and


(Testing) coarse aggregates by sieving. The No. 4 sieve is designated as the division between the fine and coarse aggregate.

Asphalt Concrete (Testing)

AASHTO T 96

This test is a measure of degradation of mineral aggregates of standard gradings resulting from a combination of actions including abrasion or attrition, impact, and grinding in a rotating steel drum containing a specified number of steel spheres, the number depending upon the grading of the test sample.


AASHTO T 176 This test method is used to determine the proportion of detrimental fines in the portion passing the 4.75-mm (No. 4) sieve of soils or graded aggregates.


AASHTO T 269 This method covers the determination of the percent air voids (Va) in compacted dense and open asphalt mixtures.


AASHTO T 283 This test method that can be used to determine if the materials used are subject to stripping and can also be used to evaluate the effectiveness of additives.


AASHTO T 304, Method A

This test is used to ensure that the blend of fine aggregate has sufficient angularity and texture to resist permanent deformation (rutting) for a given traffic level.



This procedure covers the determination of asphalt binder content of hot mix asphalt (HMA) by ignition of the binder.


AASHTO T 312

This test is used to prepare specimens for determining the mechanical and volumetric properties of Hot Mix Asphalt (HMA) using the Superpave gyratory compactor. The specimens simulate the density, aggregate orientation, and structural characteristics obtained in the actual roadway when proper construction procedure is used in the placement paving mix.


AASHTO T 324

The test method is used to determine the premature failure susceptibility of HMA due to weakness in the aggregate structure, inadequate binder stiffness, or moisture damage. This test method

measures the rut depth and number of passes to failure. Asphalt Concrete

(Testing) AASHTO T 329

This method is intended for the determination of moisture content of hot mix asphalt (HMA) by drying in an oven.


AASHTO T 335 This test method covers the determination of the percentage, by mass, of a coarse aggregate sample that consists of fractured particles meeting specified requirements.


ASTM D 4791 This test method covers the determination of the percentages of flat particles, elongated particles, or flat and elongated particles in coarse aggregates.


CT 375 This test method is used when determining the average in-place density and relative compaction of asphalt concrete (AC).

Sheathing PVC Sheathing: ASTM D 1784, Class 13464-B

HDPE Sheathing: Density of 940 to 960

kg/m3 when measured under ASTM D 792

PVC: This covers rigid PVC and CPVC compounds intended for general use. HDPE: This test determines density or specific gravity of plastics by displacement.

Bar Reinforcement Grade 60 Bar: ASTM A 615/A 615M or A 706/A

706M

This specification covers steel bars in cut lengths or coils used for reinforcement.

Grout California Test 533

This test method describes the procedure for determining the consistency of fresh concrete by measuring the depth of penetration of a metal mass into freshly mixed concrete under the force of gravity.

California Test 504 This test method describes the procedure for determining the air content of freshly mixed concrete by the pressure method.

a. Schedule and Test Frequency


The “Frequency Tables” provide a guide for sampling and testing required for the various materials and products encountered on the Project. Close adherence to sample size requirement avoids the unnecessary delay and expense of obtaining supplementary samples to complete the tests.

The frequency of sampling is intended as a guide under normal conditions. Material well within the specification and uniform in character may result in less frequent sampling and testing, whereas borderline materials may need an increase in the frequency of testing to assure specification compliance. Materials supplied from reliable sources and proven by frequent testing to be of uniform high quality may subsequently receive less sampling and testing than indicated in the Frequency Testing Tables; however, any deviation from the prescribed frequency must be noted and explained in the material testing records. When materials are being furnished intermittently, with interruptions of several days or weeks, the frequency of sampling and testing should be increased to assure that specification materials are being incorporated into the work.

Whenever failures occur, sufficient additional acceptance tests shall be taken to isolate the affected work. Documentation of the results of such additional tests shall be included in the records, including a description of the corrective measures of taken.

The following list identifies the maximum quantities accepted on a daily or project basis:

Aggregates other than for use in Portland Cement Concrete – not to exceed 100 tons per day nor more than 500 tons per project.

Bituminous material – not to exceed 100 gallons per project.

Paint – not to exceed 20 gallons per project. Acceptance to be based on weights and analysis on container.

Masonry items – check dimensions of products from specification compliance and uniformity of manufacture.

Non-reinforced or clay pipe – not more than 100 lineal feet.

Manufactured pipe materials – with visual inspection on-site.

Reinforcing steel with visual inspection on site and a Certificate of Compliance.

Tests shown in frequency table that the Town will generally accept with Certificate of Conformance or Certification of Compliance and not perform additional tests include the following:

Fly ash, cement,

Aggregates for concrete provided the initial mix design submittal include test result information,

Air entraining agents, water reducing agents, fiber additives,

Cast iron pipe,

Emulsified asphalt sealers,

Geocomposite drain,

Geotextile fabrics,

Light poles and fixtures,

Sewer or water pipe,

Slurry seals,

Paint,

Reinforcing bars and wires.

The acceptance sampling and testing frequencies are itemized below:


Frequency Table – Table 2

Materials to be Sampled or Tested

Sample Size Sampling/Testing

Frequency Typical Test

Methods Description or Comments

Portland Cement Concrete (Hydraulic Cement Concrete)

Freshly-Mixed Concrete

(Sampling)

Approx. 150lb. (or 1 cu. ft.) near mixer discharge.

When tests are required, take at least one sample for each

truck load of PCC/HCC.

ASTM C172, C685

CT 539 AASHTO T141,

M157

This describes a method to sample freshly-mixed concrete.


Approx. 150 lb/ (or 1 cu. ft.) near mixer discharge.

Take one test per day. ASTM C143 AASHTO T119

This test determines the slump of the freshly-mixed concrete.



Test each truck. ASTM C231 CT 504

AASHTO T152

This test determines the air content of freshly-mixed concrete (pressure method).



On projects with 500 cu. yd., or more, test at

least one sample per job.

ASTM C138 CT 518

AASHTO T121

This test determines the unit weight of freshly mixed concrete.



Fabricate at least two concrete cylinders per

pour. Test for compressive strength at least once for each 500

to 1,000 cu. yd. of structural concrete.

ASTM C39 CT 521

AASHTO T22

This test is used to fabricate 6” x 12” concrete cylinders. Compressive strengths are determined, when needed.



(Testing)

One random location for every 2,500 sq. ft.

As needed to verify. ASTM D2922 CT 231

AASHTO T238

This test determines field densities using the nuclear gage.


(Testing)

One random location for every 2,500 sq. ft.

As needed to verify. ASTM D3017 CT 231

AASHTO T239

This test determines the water content using the nuclear gage.

Hot Mix Asphalt (Asphalt Concrete)


7-lb sample 1 per 750 tons and any remaining part

AASHTO T 27 This test method determines the particle size distribution of fine and coarse aggregates by sieving. The No. 4 sieve is designated as the division between the fine and coarse aggregate.


One 25 kg (5-gallon) pail

2 per project AASHTO T 96 This test is a measure of degradation of mineral aggregates of standard gradings resulting from a combination of actions including abrasion or attrition, impact, and grinding in a rotating steel drum containing a specified number of steel spheres, the number depending upon the grading of the test sample.


One 44-lb sample 1 per 750 tons and any remaining part

AASHTO T 176 This test method is used to determine the proportion of detrimental fines in the portion passing the 4.75-mm (No. 4) sieve


of soils or graded aggregates.


One 30-lb sample, recommend two 30-lbs samples

One per 4,000 tons or 2 per 5 business days, whichever is more

AASHTO T 269 This method covers the determination of the percent air voids (Va) in compacted dense and open asphalt mixtures.


Six 6-diameter samples

1 per project AASHTO 283 This test method that can be used to determine if the materials used are subject to stripping and can also be used to evaluate the effectiveness of additives.


1200 grams(min), recommend 3 lb sample

2 per project


This test is used to ensure that the blend of fine aggregate has sufficient angularity and texture to resist permanent deformation (rutting) for a given traffic level.


2000 to 2500 grams

1 per 750 tons and any remaining part


This procedure covers the determination of asphalt binder content of hot mix asphalt (HMA) by ignition of the binder.


Three 72-lbs samples

1 per 750 tons AASHTO T 312 This test is used to prepare specimens for determining the mechanical and volumetric properties of Hot Mix Asphalt (HMA) using the Superpave gyratory compactor. The specimens simulate the density, aggregate orientation, and structural characteristics obtained in the actual roadway when proper construction procedure is used in the placement paving mix.


Four 6-inch compacted specimens

1 per project AASHTO T 324 The test method is used to determine the premature failure susceptibility of HMA due to weakness in the aggregate structure, inadequate binder stiffness, or moisture damage. This test method measures the rut depth and number of passes

to failure. Asphalt Concrete

(Testing) 120-lb sample 1 per 2,500 tons but

not less than 1 per paving day

AASHTO T 329 This method is intended for the determination of moisture content of hot mix asphalt (HMA) by drying in an oven.


44-lb sample 2 per project

AASHTO T 335 This test method covers the determination of the percentage, by mass, of a coarse aggregate sample that consists of fractured particles meeting specified requirements.


44-lb sample 2 per project ASTM D 4791 This test method covers the determination of the percentages of flat particles, elongated particles, or flat and elongated particles in coarse aggregates.



4-inch or 6-inch diameter cores

3 per 250 tons but not less than 3 per paving

day

CT 375 This test method is used when determining the average in-place density and relative compaction of asphalt concrete (AC).

Retaining Wall

Sheathing One one-foot (1’) sample (at least 50 grams)

Obtain one sample prior to start of project.

PVC Sheathing: ASTM D 1784, Class

13464-B HDPE Sheathing: Density of 940 to 960 kg/m3 when measured under

ASTM D 792

PVC: This covers rigid PVC and CPVC compounds intended for general use. HDPE: This test determines density or specific gravity of plastics by displacement.

Bar Reinforcement Three four-foot (4’) samples

Obtain samples prior to start of project.

ASTM A 615/A 615M or A 706/A

706M

This specification covers steel bars in cut lengths or coils used for reinforcement.

Grout One 30-lb sample Obtain one sample during every day of

production.

CT 533

This test method describes the procedure for determining the consistency of fresh concrete by measuring the depth of penetration of a metal mass into freshly mixed concrete under the force of gravity.

One 1 ft3 sample Obtain one sample

during every day of production.

CT 504 This test method describes the procedure for determining the air content of freshly mixed concrete by the pressure method.

b. Roles and Responsibilities for Non-Conforming Materials and Failed Tests

In the case where quality control activities do not comply with the Quality Assurance Program, the Quality Management Plan, or the Quality Control Program (provided by the Contractor), or where the contractor fails to properly operate and maintain an effective quality control program, as determined by the Quality Manager or Quality Inspector, the Quality Manager may:

Order the contractor to replace ineffective or unqualified quality control personnel or subcontractors.

Order the contractor to stop work until appropriate corrective actions are taken.

The Town of Mammoth Lakes shall hold retention of 25 percent of the estimated value of contract work performed during estimate periods when the Contractor fails to conform the QAP, Quality Management Plan, or the Quality Control Program. The amounts retained for failure of the Contractor to conform to the plans will be released for payment on the next monthly estimate for partial payment following the date that an approved Quality Control Program has been implemented and maintained, and the quality of work is adequately controlled, as determined by the Quality Manager. Compaction Requirements: The Independent Testing Laboratory Technicians will perform compaction tests at locations determined by the Inspector, at approximately 100 foot spacing to ensure compaction requirements are met. No fill, backfill, aggregate base or paving shall commence without prior Engineer approval of the subgrade. If the required compaction is not achieved, the Contractor will be required to (1) recompact the area between the previous and following test points, a minimum distance of 100 feet; or (2) test at own expense at points half way between the previous tests and compact the areas as far as the next passing test. This area shall then be retested


at intervals offset from the previous tests by half the distance between the last two tests. This procedure is to be repeated until the compaction tests show that the required compaction has been reached. Concrete Requirements: The Independent Testing Laboratory shall ensure the quality of the concrete meets the approved mix design. The Independent Testing Laboratory Technicians will perform tests on concrete arriving on the construction site (from the Concrete Plant) to ensure the slump, air content, and unit weight meet the Specifications identified by the Town of Mammoth Lakes. Frequencies are identified in Table 2. Concrete compressive strength tests shall be performed and material found not meeting the specifications shall be removed and replaced by the Contractor at no additional cost to the Town of Mammoth Lakes. The Quality Manager shall document the location of work performed per concrete truck. Asphalt Concrete Requirements: All mixes shall be reviewed to ensure compliance with Specification prior to paving. The Independent Testing Laboratory shall be responsible for ensuring the asphalt concrete mix design is met. The Independent Testing Laboratory Technicians will perform asphalt concrete tests identified in Table 2. Retaining Wall Requirements: The contractor will coordinate with Material Engineering and Testing Services (METS) for jack/load cell calibration prior to load testing. Coordinate with the Los Angeles office at:

100 South Main Street 11

th floor, MS #19

Los Angeles, CA 90012 Phone 213-620-2300

c. Documentation

The Quality Manager shall maintain and testing “Summary Log” for each material requiring multiple sampling and testing as defined in the “Frequency Tables.” The “Summary Log” shall include appropriate data such as station location, type of test, approximate quantity of material represented by the test sample, test result, and tester. Failing tests results require retesting of the material with cross-references of the retest to the initial failing test results previously entered in the “Summary Log.” The Testing Consultant may also prepare the “Summary Log.”

Representative samples of all materials entering work shall be sampled at the location specified in the standard specification or special provisions. When locations are not specified, the samples shall be taken at the frequency indicated in the “Frequency Tables.” Where small quantities of materials are used on a project, the Quality Manager or Resident Engineer may waive acceptance testing, and accept the material based on visual inspection only.

The records for materials including samples and tests, material releases, and certificates of compliance for a given project shall be incorporated in the Quality Manager’s files. The project file shall be available at the Town of Mammoth Lakes’ Office for inspection by Caltrans or FHWA personnel at any time during the construction project. The file shall be available at the local agency administrative office for at least three years following the date of final payment. The “Summary Log” will identify the reviews of material sampling and testing by Caltrans and FHWA reviewing personnel, and assist the Quality Manager in tracking the frequency of testing.

d. Independent Assurance Program

The contractor shall hire an independent testing laboratory to prepare an unbiased and independent evaluation of all sampling and testing procedures. The independent testing laboratory shall follow the sampling and testing frequencies identified hereinto, evaluate the testing equipment per certifications and calibration requirements,


provide qualified testing personnel, and provide prompt comparison and documentation of test results. Should a discrepancy arise in the results, the Town will employ a secondary independent laboratory for verification.

2. Certifications and Calibrations

a. Certifications

The Town of Mammoth Lakes shall provide all applicable certifications provided by an independent testing laboratory prior to the start of construction.

Upon completion of the project, a “Materials Certificate” shall be completed by the Quality Manager. A copy of “Materials Certificate” shall also be included in the Town’s construction records. The Resident Engineer in charge of the construction for the Town shall sign the certificate. All materials incorporated into the work which did not conform to specification must be explained and justified on the “Materials Certificate,” including changes by virtue of the contract change order.

b. Calibration Requirements

The independent testing laboratory shall be certified by the State of California and Caltrans. Any laboratory providing testing services for projects shall be under the responsible engineering management of a California registered professional engineer with experience in inspection and testing of construction materials. The engineer shall certify the results of all tests performed by laboratory personnel under his/her supervision.

The Testing Consultant shall calibrate field construction laboratory equipment and portable field test equipment (sand cones, scales, moisture test equipment, slump cones, air meter, etc.) prior to use on construction projects, and recalibrate as frequently as required. The maximum interval between calibrations is one year. Calibrations shall be provided to the RE upon request (after the project is bid).

Calibration of test equipment shall conform to Chapter 6 Section 3, “Field Tests,” of the Caltrans Construction Manual. Two sections in the Quality Assurance Program Manual (Part 3-10, “Testing Equipment Used on Construction Projects Administered by Local Agencies,” and Appendix B, “Procedures for Calibrating Materials Testing Equipment”) describe the procedures that the testing personnel are to use when calibrating materials testing equipment.

Private consultants using nuclear test equipment to determine soil, aggregate, or asphalt concrete compaction, shall calibrate their nuclear gauges on Standard density blocks. Nuclear gages not calibrated on Standard density blocks shall not be accepted. Specified calibration tables for each device shall be used.

c. Notification of Equipment Calibration

Upon proper calibration, a decal shall be firmly affixed to each piece of calibrated equipment. Decal type and required information are specified on page 63 Appendix B of the Quality Assurance Program Manual. A manufacturer’s or service contractor’s decal is acceptable as long as the above-required information is readily available.

Should such decal become unreadable or lost, then the equipment is to be recalibrated as soon as possible. Where such equipment either requires repair or cannot be repaired, a timely repair or replacement shall be secured.

The Caltrans Office of Materials Engineering and Testing Services, Town, private contractor, and sub-contractor laboratories shall participate in one or all of the following:

The AASHTO Materials Reference Laboratory (AMRL),

The Cement and Concrete Reference Laboratory (CCRL) inspection programs, and

The Caltrans Reference Sample Program

All laboratories shall maintain their laboratory testing equipment in accordance with recognized national calibration standards.


D. Contacts for advice, assistance, and reviews

1. Environmental analysis: a. Mark Heckman, Environmental Branch, District 9 Caltrans b. Stacey Zolnoski, Archeologist, District 9 Caltrans c. Robert Edgerton, Principal Planner, Helix Environmental Planning d. Carrie D. Wills, Archeologist, Helix Environmental Planning

2. Designer of record: a. Tom Platz, Principal, Triad/Holmes Associates

3. Right of Way and Land Surveys a. To be determined by Contractor, Town of Mammoth Lakes will provide credentials

prior to Bid Award

IV. Field or Resident Engineer Office

The Office of the Resident Engineer is located at the Town of Mammoth Lakes’ Office at 437 Old Mammoth Road, Suite R, Mammoth Lakes, CA 93546. The Town of Mammoth Lakes will retain staff on the project site during all hours of construction.

The Resident Engineer Office provides the following office and communications equipment:

1) Copier: Xerox WorkCentre 5775 (Copier/Printer) 2) Scanner: Xerox WorkCentre 7435 (Multifunctional Printer with Network Scanning) 3) DSL (Email): [email protected] 4) Telephone Numbers:

a. Office Number: (760) 934-8989 x283 b. Mobile Number: (760) 914-3133

mailto:[email protected]

quality management plan - mammoth lakes, california

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