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NRMCA Certifications for Production Facilities – Quality and Sustainability
Richard S. Szecsy
Riyadh, Saudi Arabia October 27, 2014
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NRMCA Programs
Quality / Standards Certification of Production Facilities Producer Quality Certification
Green Initiatives / Sustainability GreenStar Plant Certification Sustainable Plant Certification
NRMCA Certification of Production Facilities
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NRMCA Plant Certification In place since 1966 Required by
Several State Highway Agencies AIA specification ACI 301 Design firm specifications US Army Corps of Engineers
2500 plants currently certified About 50% of operating plants 100 plants in the Middle East
20,000 delivery vehicles currently certified
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Purpose
One part of a Quality System
Evidence that Production Capabilities Exist
Facilities Conform to Industry Standards
Does not address quality of concrete
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Locations State Plants State Plants
AK 13 MT 7 AL 138 NC 249 AR 15 ND 4 AZ 21 NE 72 CA 203 NH 2 CO 20 NJ 11 CT 34 NM 23 DC 7 NV 37 DE 0 NY 64 FL 25 OH 30 GA 27 OK 15 HI 15 OR 29 IA 2 PA 18 ID 20 PR 2 IL 47 RI 6 IN 76 SC 132 KS 12 SD 1 KY 32 TN 49 LA 26 TX 257 MA 22 UT 69 MD 29 VA 103 ME 0 VT 0 MI 157 WA 114 MN 0 WI 24 MO 13 WV 6 MS 71 WY 4
Non US 160
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NRMCA Plant Certification
Audits to requirements of: ASTM C 94 AASHTO M 157 CPMB 100 TMMB 100
Initial Version – Sept. 1965 Current – 11th revision 2011
More info on www.nrmca.org
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Reasons for Certification
Required by Specifications
Company Quality Assurance
Marketing Company Proficiency
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Inspection Sections
1. Material Handling and Storage 2. Batching Systems
a. Accuracy of measuring devices b. Accuracy of batching c. Recording systems
3. Central Mixing Operations 4. Ticketing Systems 5. Delivery Fleet Inspections
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Plant Inspector’s Guide
Provides details on each inspection item Discussion of Intent Hints Figures Numerical Examples
Basis for qualification of inspectors and assistants Useful Guide for concrete producers
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www.nrmca.org
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Materials Storage and Handling
Cementitious Materials Aggregates Water Winter Production
Admixtures
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Batching Equipment
Types of Scales Scale Accuracy and Verification Frequency of verification
Requirements for types of scale systems
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Scale Accuracy Scale Accuracy verified through range of use
Certified test weights 10% of scale capacity Certified accurate to 0.01% of indicated weight
Substitute Loads > 50% of scale capacity - Strain Loads
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Batching Weigh Batchers
Cement Aggregate Water and admixtures
Volumetric Batchers - water Water meters Volumetric tanks
Admixture Dispensers Moisture Compensating Devices
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Accuracy of Batching - Summary Cementitious Materials (2.5.1)
Above 30% scale capacity ± 1% of desired weight intermediate and final Aggregates (2.5.2)
Individual Batchers (rare) ± 2% of desired weight Cumulative Batchers ± 1% of desired weights intermediate and final
Water (2.5.3) Weight or volume ± 1.5% of desired quantity ± 1 gallon
Admixtures (2.5.4) Weight or volume ± 3% of desired quantity ± min dosage in oz/cwt Small batch tolerances (<30% of scale capacity) also defined See examples – Pg. 2-29
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Batching Systems
Batching Controls Measuring system for each material Operates the batching process
Batching System - Combination of all Batching Controls Manual Partially Automatic Semi-Automatic Automatic
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Recorders Requirements for Recorders
Properly protected without ability to tamper Identification of batch with delivery ticket Register empty balance within 0.3% of scale capacity for
weights Register quantity of ingredients actually batched.
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Central Mixing Operation Capable of producing uniform concrete
C 94 time (Note 24) 1 min + 15 s per addl yd
Shorter time when qualified CPMB mixers are qualified
Equipped with timing device that will not permit discharge before mixing time has elapsed
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Central Mixing Operation Mixing Uniformity
Slump – 25 mm for < 100 mm; 40 mm for 100-150 mm Coarse Aggregate Content – range <6%
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Delivery Ticket
Batch tickets shall include: Batch ticket may include additional info: Company & batch plant name Type , brand and amount of cementitious Ticket serial number Type , brand and amount of admixtures Date Type , brand and amount of fibers Truck number Source & weight of water and slurry Job name & location Information to calculate total mixing water Class of concrete Max aggregate size Quantity of concrete, yd3 Weight of aggregates Time loaded Previously used certification Water added & initials Signature of producer
Based on ASTM C94 Reporting Requirements
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Delivery Fleet Inspection/Certification of Delivery Fleet is Required
Truck Mixers Agitators Non-agitating units
Delivery fleet should be re-certified annually (not to exceed 14 months) Included in agreement signed by company (Sec. 7)
90% of fleet should be acceptable
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Truck Mixers
Interior condition satisfactory Blade wear Hardened concrete
Hoppers/Chutes clean Mixer size and capacity Rev counters Water measurement on truck
mixers
NRMCA Producer Quality Certification
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Recorded presentation available online
http://www.nrmca.org/research_engineering/quality_certification/default.htm
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Quality Management System
ISO 9000 concepts “Standard” for QMS Quality ↔ Performance
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Components of Certification
A Quality Plan exists – with minimum content Qualified People Testing Capabilities Monitoring quality of ingredient materials Production facilities Monitoring quality of product Measurement systems System for continuous improvement
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QMS - Quality Manual
Introduction Quality Management
System (QMS) Management Responsibility Customer Focus Human Resources Facilities, Plant(s) and
Equipment Materials Management Concrete Mixture
Development or Selection
Purchasing Order Processing and
Dispatching Procedures Concrete Production Concrete Testing Concrete Delivery and Site
Control Concrete Troubleshooting Measurement, Analysis and
Improvement
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Quality Manual ►
Introduction Quality Management
System (QMS) Management Responsibility Customer Focus Human Resources Facilities, Plant(s) and
Equipment Materials Management Concrete Mixture
Development or Selection
Purchasing Order Processing and
Dispatching Procedures Concrete Production Concrete Testing Concrete Delivery and Site
Control Concrete Troubleshooting Measurement, Analysis and
Improvement
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NRMCA Quality Certification Comprehensive Quality Plan
Personnel Qualifications Testing Capabilities Ingredient materials quality Production facilities Product Management Measurement systems –
corrective action
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Audited Sections 1. Quality Manual
2. Resources for Quality
Management 1. Personnel 2. Laboratory
3. Materials Quality 4. Production Facilities 5. Product Management 6. Measurement Systems
General Document for Company
Conformance Information Specific to Applying Entity
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1. Company Quality Manual
QM Content (TOC) Management
Commitment Quality Objectives Personnel Qualifications Laboratory Testing
Capabilities Responsibility for QM Quality Control
Processes
Control of Concrete Production
Specification Review Process
Concrete Mixtures Non-Conforming Material Internal Audits Corrective Action Measurement Systems
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2.1 Personnel Qualifications
Quality Manager Plant Operator (1 per plant) Field Testing Technicians Laboratory Technicians Truck Mixer Operators (2 per plant)
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2.2 Laboratory (in-house or contract)
Testing Capabilities an in-house laboratory, or a contract laboratory.
Primary Lab Mix development, evaluations… Accredited or conform to Appendix B1
Other labs Routine QC testing Conform to Appendix B2
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3. Ingredient Materials Quality Management
Compliance with Specification Conformance Monitoring Shipments Cementitious Materials Aggregates
Moisture and adjustments Water Quality Lightweight aggregate management
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4. Production Facilities
Compliance with Standards Monitoring Batching Accuracy Control of Mixing Water
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5. Product Management
Specifications and Orders Mixtures and Submittals Pre-Qualification Tests Mixture Adjustment – responsibilities Order Tracking Records
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6. Measurement Systems
Mixture Identification and Traceability Customer Resolution Internal Quality Audits Internal Testing Quality Assurance Test Records Non-Conforming Mixtures Measurement of Quality Objectives Management of Returned Concrete
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Summary Quality Management System
Establish processes and responsibility Consistent with available resources Management support essential Facilitate continuous improvement
Quality Certification Sets minimum standard Audits conformance to QMS
Goals of a QMS Reduce variability Improve profitability
Environmental Plant Certification
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What is Green-Star? Compliance with an Environmental
Management System (EMS) NRMCA Environmental Task Group.
Collaboration with the US Environmental Protection Agency (EPA)
Recognizes ready mixed concrete plants that use an EMS based on the Plan-Do-Check-Act model of continual improvement. Use your existing EMS; if you have one Easy to use NRMCA templates
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Benefits from Green-Star?
Favored Status – Key Customers are demanding to do business with organizations that are known to be protective of the environment. Major specifiers, including nationwide private and
publicly held companies as well as State DOTs are starting to ask suppliers about participation in an EMS to be eligible to even bid on a job.
Competitive advantage!
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Benefits from Green-Star? Increased Revenues – savings
through pollution prevention and waste reduction. Use every resource to the
maximum potential. It costs money to dispose of the waste
Improved Efficiency – Sound,
environmental management methods will improve profits. It costs money to generate
waste Enhance compliance
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Benefits from Green-Star? Community Goodwill
Improve community relations Potentially speed up new permits through
communication with the community on environmental matters.
Show pride in your community Enhance employee morale and enhance recruitment of
new employees Enhance image with regulators and investors
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Benefits Green-Star? Reduction of Liability and Risk – less apt to having
environmental problems by using a pro-active EMS that documents results and has continual improvement.
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NRMCA Green-Star Components
Environmental Policy Continual improvement; Pollution prevention; and, Compliance with regulations (Federal, State and
Local) and routine review. Environmental Policy objectives: Strong Management Commitment Easy to understand by all employees Reflects business values/vision
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NRMCA Green-Star Components
Self-evaluation program to gauge regulatory compliance and operational status Comprehensive - covering
all areas of environmental compliance pertinent to the ready mixed concrete industry
Regular (should occur at least once per EMS cycle)
Documented.
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NRMCA Green-Star Components
Comprehensive environmental training program with emphasis on NRMCA training courses or equivalent
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NRMCA Green-Star Components
Public outreach program (website, newsletter, plant tour with local community, etc.)
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NRMCA Green-Star Components Water Quality Management (process water discharges,
stormwater discharges, water conservation, reuse and recycling)
Air Quality Management (airborne process emissions, airborne fugitive emissions, vehicular emissions)
Hazardous Materials Management (petroleum and chemical usage, fuel consumption, petroleum and chemical spill/leak prevention, spill prevention control and counter-measures (SPCC))
Solid Materials Management (returned concrete management, concrete fines, stone and sand)
Community Issues (noise and aesthetics) Sustainability (energy conservation and recycling efforts
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NRMCA Green-Star Components EMS Cycle Duration
For Green-Star Certification, the EMS (a cyclical process) must have gone through at least one cycle, of at least 3 months, but with 6 months or more preferred. Facility and auditor sets the EMS cycle times
Average Cycle length …8.3 months
NRMCA Sustainable Concrete Plant Certification
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Purpose of Certification
Provide detailed guidance to meet performance goals in NRMCA Sustainability Initiatives
Defines what constitutes sustainable plant operations
Recognize plants for outstanding performance
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Sustainable Concrete Plant Guidelines
Provides sustainable strategies
Energy and cost savings
Increased productivity
Contribute directly to a company’s bottom line
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Organization of Guidelines
4. Product Use
1. Material Acquisition 2. Production
3. Construction 5. Recycling
Life Cycle Phases
Credit Categories Organized around concrete production process
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Impact Categories and Credits
Embodied Energy
Carbon Footprint
Water Use
Waste
Recycled Content
Social Concerns and Human Health
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Baseline Metrics
Establish thresholds, minimum requirements, etc. 2009 Sustainable Plant Survey NRMCA Fleet Benchmarking Survey NRMCA Industry Data Survey Other Research
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Sustainability Credits
Category Credits Prerequisites 0
Material Acquisition 16 Production 52
Delivery and Construction 13 Product Use 6
Recycling 8 Additional Sustainable Practices 5
Total Points 100
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Sustainability Levels
Platinum 90-100 point
Gold 70-89 points
Silver 50-69 points
Bronze 30-49 points
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Prerequisites Points
Prerequisite 1: Compliance with Environmental Regulations 0
Prerequisite 2: Environmental Management System (EMS) 0 Prerequisite 3: Energy Audit 0 Prerequisite 4: Site Plan 0
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1. Material Acquisition Points
Credit 1.1: Recycled Aggregate 4 Credit 1.2: Optimized Portland Cement Use 6 Credit 1.3: Materials Transportation Analysis 4 Credit 1.4: Sustainable Purchasing Plan 2
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2. Production Points
Credit 2.1: Process Dust Emissions Control 3 Credit 2.2: Fugitive Dust Emissions Suppression 3 Credit 2.3: Reduction of Fresh Water Use in Plant Operations 4
Credit 2.4: Reduction of Fresh Water Use in Batching 3 Credit 2.5: Process Water Collection and Treatment 3 Credit 2.6: Stormwater Management 4 Credit 2.7: Proper Storage of Chemical and Petroleum Products 2
Credit 2.8: Secondary Containment of Chemical and Petroleum Products 2
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2. Production (cont’d) Points
Credit 2.9: Employee Training Plan and Emergency Response Procedures 2
Credit 2.10: Reduced Carbon Footprint 6 Credit 2.11: Reduced Primary Energy Consumption 6 Credit 2.12: Renewable Electricity Use 4 Credit 2.13: Noise Control 2 Credit 2.14: Employee Transportation 2 Credit 2.15: Biodiversity 3 Credit 2.16: Worker Safety 3
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3. Delivery and Construction Points
Credit 3.1: Fuel Efficiency Improvement 4 Credit 3.2: Fleet Emissions Reduction 5 Credit 3.3: Driver Training 2 Credit 3.4: Green Building Products 2
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4. Product Use Points
Credit 4.1: Green Building Education for Staff 3 Credit 4.2: Green Building Education for Specifiers 2 Credit 4.3: Sustainability Advocacy 1
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5. Material Reuse and Recycling Points
Credit 5.1: Excess Concrete Reduction 3 Credit 5.2: Diversion of Returned Concrete from Disposal 3
Credit 5.3: Other Recycling Initiatives 2
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6. Additional Sustainable Practices Points
Credit 6.1: Additional Sustainable Practices 5
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Certification Period
Certification valid for 2 years Starting from date NRMCA certifies the plant Plant may recertify any time during the 2 year
period If the certification period expires, plant can no
longer claim to be an NRMCA Certified Sustainable Concrete Plant
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Resources
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Credit Requirements/Documentation
Data collected for 12 month period starting no earlier than 15 months ago
Credit format Background and goals Strategies Metrics Documentation
Metrics Equations Worksheets Carbon Footprint Calculator (LCA)
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Credit 2.1: Process Dust Emissions Control
≥ 50% weighted process emission controls 1 point ≥ 75% weighted process emission controls +1 point ≥ 90% weighted process emission controls +1 point
Documentation Completed “Dry Batch Process Emissions” or “Central Mix Process Emissions” worksheet from the Emissions Calculator.
Complete Emissions Calculator to determine weighted process emission controls
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Point source emissions (Dry Batch Plant) weight Cement delivery to silo* Silo top baghouse or silo vented to central vacuum collector system No 5% Silo equipped with overfill warning system No 15% Silo equipped with high pressure protection system (pinch valve/alarm) No 5% SCM delivery to silo* Silo top baghouse or silo vented to central vacuum collector system No 5% Silo equipped with overfill warning system No 15% Silo equipped with high pressure protection system (pinch valve/alarm) No 5% Cement/SCM weigh batchers Weigh batcher vented to batcher filter vent or vented to central dust collector (direct or indirect) No 5% Fines collected in the dust collectors are recycled No 5% Coarse and fine aggregate transfer to conveyor Transfer underground or transfer point enclosed, or conveyor covered No 5% Coarse and fine aggregate transfer to elevated storage Plant enclosed or transfer point enclosed No 5% Truck loading hopper Hopper is surrounded (3 sides) by shroud and is vented to a central dust collector No 20% Hopper is equipped with a telescopic boot No 5% Spray bar used (in lieu of central dust collector). If central dust collector is present, please mark this "Yes". No 5% CONTROLLED PROCESS EMISSION SOURCES 0.00%
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Point source emissions (Central Batch Plant) weight Cement delivery to silo* Silo top baghouse or silo vented to central vacuum collector system No 5% Silo equipped with overfill warning system No 15% Silo equipped with high pressure protection system (pinch valve/alarm) No 5% SCM delivery to silo* Silo top baghouse or silo vented to central vacuum collector system No 5% Silo equipped with overfill warning system No 15% Silo equipped with high pressure protection system (pinch valve/alarm) No 5% Cement/SCM weigh batchers Weigh batcher vented to batcher filter vent or vented to central dust collector (direct or indirect) No 5% Fines collected in the dust collectors are recycled No 5% Coarse and fine aggregate transfer to conveyor Transfer underground or transfer point enclosed, or conveyor covered No 5% Coarse and fine aggregate transfer to elevated storage Plant enclosed or transfer point enclosed No 5% Mixer loading Central mixer is vented to a dust collector(s) No 25% Hopper is equipped with a telescopic boot No 5% CONTROLLED PROCESS EMISSION SOURCES 0.00%
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Credit 2.3: Reduction of Fresh Water use in Plant Operations
PATH A – PERFORMANCE Non-batching fresh water use percentage below national baseline of 13 gal/cy (64.4 l/m3).
Documentation Letter from company’s accountant or corporate officer stating total quantity of municipal water purchases and onsite well water used for non-batching purposes.
Fresh water use is 10% or more below U.S. national baseline 1 point Fresh water use is 20% or more below U.S. national baseline +1 point Fresh water use is 30% or more below U.S. national baseline +1 point Fresh water use is 40% or more below U.S. national baseline +1 point
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Credit 2.3: Reduction of Fresh Water use in Plant Operations
Recycled process water and/or captured stormwater used for all truck exterior rinses
1 point
Captured stormwater used for dust suppression 1 point Capture stormwater used to sprinkle aggregate bins for dust control or heating/cooling
1 point
Recycled process water and/or captured stormwater AND/ OR “rock out” method used for all mixer drum washouts
1 point
PATH B – PRESCRIPTIVE Use recycled water or rainwater for the uses specified in the points table.
Documentation Brief narrative describing the water collection and treatment system and the infrastructure in place to allow the use of process water at the location of each credit claimed
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Credit 2.10: Reduced Carbon Footprint
Documentation Submit a copy of the CO2 Calculator’s output page.
CO2e 5% or more below U.S. baseline 1 point CO2e 10% or more below U.S. baseline +1 point CO2e 15% or more below U.S. baseline +1 point CO2e 20% or more below U.S. baseline +1 point CO2e 25% or more below U.S. baseline +1 point CO2e 30% or more below U.S. baseline +1 point
Use CO2 Calculator to calculate the plant CO2 footprint
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Carbon Footprint Calculator
Input Data Material Purchase Data Material Transportation Data Plant Energy Data Fleet Energy Data
Results Plant Annual Carbon Footprint (total and per cy) Plant Annual Energy Use (total and per cy)
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NRMCA Sustainable Concrete Carbon Calculator - Annual Benchmark Version
RESULTS SUMMARY US Customary Units SI Units
Annual Total Per Unit Annual Total Per Unit
Data Input is 0% Complete Global Warming Potential (CO2e) 0 short tons 0.00 lbs/yd3 0 metric tons 0.00 kg/m3
Primary Energy Consumption 0 MMBTU 0.00 MMBTU/yd3 0 MJ 0.00 MJ/m3
A. LOCATION AND PLANT FLEET DATA
IN THE YELLOW CELLS BELOW, ENTER THE LOCATION AND PLANT FLEET DATA. Regional Average Select a location from the drop down list. Number of Plants
# Location Location Region Per Company 1 Plant Location Location 0
Fleet Data Amount Units
Regional Average per Year
Regional Average per Load Units Totals for All Trucks Units
2 Total Ready Mixed Hauled by Diesel Mixer Trucks yd3/year 0 0.0 yd3 per truck 0.0 lbs/year 3 Total Ready Mixed Hauled by Natural Gas Mixer Trucks yd3/year 0 0.0 yd3 per truck 0.0 lbs/year 4 Number of Diesel Mixer Trucks in Your Fleet trucks per plant fleet 0 1 trucks per load 5 Number of Natural Gas Mixer Trucks in Your Fleet trucks per plant fleet 0 1 trucks per load Total Volume Production per year 0.00 yd3/year 0
B. MATERIALS IN THE YELLOW CELLS BELOW, ENTER THE TOTAL ANNUAL QUANTITIES OF MATERIALS USED.
Define the specific materials used throughout the year to produce ready mixed concrete. One-Way Distance From Material Source to Plant by Tranportation Mode
# Material Info Annual Amount Units Info Truck Rail Barge Ocean Units 1 Portland Cement n/a short tons/year 0% of Binder Wt mi 2 Fine Aggregate - natural sand natural sand short tons/year mi 3 Fine Aggregate - crushed stone/concrete crushed stone/concrete short tons/year mi 4 Coarse Aggregate - natural gravel natural gravel short tons/year mi 5 Coarse Aggregate - crushed stone/concrete crushed stone/concrete short tons/year mi 6 SCMs - Fly Ash Fly Ash short tons/year 0% of Binder Wt mi 7 SCMs - Silica Fume Silica Fume short tons/year 0% of Binder Wt mi 8 SCMs - BF Slag BF Slag short tons/year 0% of Binder Wt mi 9 Batch Water 8.35 lbs/gallon gallons/year 0 short tons/year Average Units
10 Water Used to Washoff & Washout all Trucks in Fleet 8.35 lbs/gallon gallons/year 0 short tons/year - wash water gallons/year for fleet Total Mix Weight 0.00 short tons/year - wash water gallons/year per truck
C. READY MIXED CONCRETE PLANT ANNUAL OPERATING ENERGY CONSUMPTION IN THE YELLOW CELLS BELOW, ENTER THE TOTAL ANNUAL PLANT OPERATING ENERGY CONSUMPTION DATA. Operating Energy Consumption Operating Energy Consumption Define the annual operation and maintenance data for the ready mixed concrete plant. per Year per Cubic Yard
# Energy Type Value Units Regional Average Plant Value per Cubic Yard Produced MMBTU MJ MMBTU MJ 1 Purchased Electricity (from Grid) kWh/year 0 0.00 kWh/yd3 0.00 0.00 0.00 0.00 2 Purchased Electricity (from Green Grid) kWh/year 0 0.00 kWh/yd3 0.00 0.00 0.00 0.00 3 Natural Gas ft3/year 0 0.00 ft3/yd 0.00 0.00 0.00 0.00 4 Diesel gallons/year 0 0.00 gallons/yd3 0.00 0.00 0.00 0.00 5 Fuel Oil gallons/year 0 0.00 gallons/yd3 0.00 0.00 0.00 0.00 6 LPG gallons/year 0 0.00 gallons/yd3 0.00 0.00 0.00 0.00
Total 0.00 0.00 0.00 0.00
D. TRANSPORTATION FROM PLANT TO SITE IN THE YELLOW CELLS BELOW, ENTER THE TOTAL ANNUAL TRANSPORTATION DATA. Define the total annual transportation data for the ready mixed concrete plant. Plant Average per year for all trucks Plant Average per mile
# Annual Transportation Value Units Regional Average MMBTU MJ MMBTU MJ 1 Annual Diesel Fuel Usage for all Diesel Trucks gal/year 0 0 0 0.00 0.00 2 Annual Natural Gas Fuel Usage for all Natural Gas Trucks ft3/year 0 0 0 0.00 0.00 3 Annual Distance Travelled for all Diesel Trucks mi/year 0 0 mi/year per truck 4 Annual Distance Travelled for all Natural Gas Trucks mi/year 0 0 mi/year per truck Total volume delivered (produced) per year 0.00 yd3/year 0 Average miles per gallon diesel 0.00 mi/gal 0.00 Average miles per ft3 natural gas 0.00 mi/ft3 0.00
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93%
3% 4%
Short Tons CO2e by Life Cycle Stage
Material Manufacturing &Transportation
Ready Mixed PlantOperations
Transportation to Site
Life Cycle Stage
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81,506
2,786 3,365
0
10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
Material Manufacturing & Transportation Ready Mixed Plant Operations Transportation to Site
Short Tons CO2e
Life Cycle Stage
Short Tons CO2e Breakdown by Life Cycle Stage
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Credit 2.15: Biodiversity
The WHC Wildlife at Worksm standard habitat enhancements: 1. Identify and manage exotic, invasive species 2. Create habitat for pollinators 3. Establish an avian management program 4. Enhance visual berms 5. Wetland / pond structural enhancement 6. Conservation education
WHC biodiversity program for ready mixed concrete plants can be found at www.nrmca.org/sustainability.
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Credit 2.15: Biodiversity
Participate in WHC Wildlife at Worksm program and adopt 1 habitat enhancement strategy
1 point
Participate in WHC Wildlife at Worksm program and adopt 2 or more habitat enhancement strategies
+1 point
Achieve WHC Wildlife at Worksm Certification for at least 1 habitat enhancement strategy
+ 1 point
Documentation • Documentation that the plant is enrolled in the WHC Wildlife at
Worksm program • Brief narrative and photos describing the strategies implemented • Documentation demonstrating the plant has achieved WHC Wildlife
at Worksm Certification
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Credit 5.1: Excess Concrete Reduction
≤ 3% returned concrete 1 point ≤ 1% returned concrete +2 points
Documentation Brief narrative describing:
• Total amount of concrete returned • Total amount of concrete produced • Returned concrete percentage calculations
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Credit 5.2: Diversion of Returned Concrete from Disposal
≥ 50% returned concrete diverted from disposal 1 point ≥ 75% returned concrete diverted from disposal +1 point 100% returned concrete diverted from disposal +1 point
Documentation Brief narrative describing:
• How returned concrete is diverted from landfills • Total amount of returned concrete diverted from landfills • Total returned concrete • Calculations of diverted waste
Site plan with equipment used to reclaim concrete and windrow areas
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Credit 5.3: Other Recycling Initiatives
1. Create a comprehensive written recycling program 2. Provide appropriate facilities on-site for collection 3. Stay abreast of local or national recycling options and regulations
Existence of plant-wide recycling program including the appropriate collection facilities for on-site collection
2 points
Documentation Brief narrative describing plant-wide recycling programs, such as:
• Posted lists of recyclable items • Recycling bins and/or recycling service agreements
www.nrmca.org/sustainability
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Thank you
Questions
