Environmental Waste ServicesEnvironmental Waste ServicesDual Arm –Single Pass Alley Dual Arm –Single Pass Alley

CollectionCollection

• Location – Collin County Tx.

• Plano Population – 268,000 1990 - 128,713 2000 - 222,030 2010 - 263,000

• Automated collection Services Provided by EWS

Residential refuse weekly collection

Residential recycle bi-weekly collection

• Residential customers serviced 70,300

• Switched to automated collections in 1995

• 15 daily trash routes

• 10 bi-weekly recycle routes

• 75% of city has collection point in the alley

• Home construction developed on alley access for

majority of residences

Biggest factor in looking at the dual arm collection

• 3 separate demos in 2010 & 2011On Route Mileage – In the alley

Fuel Consumption

Driver Productivity

Dual ArmSingle Pass

Double Pass Variance

272.2 Gals 285.6 Gals 13.4 Gals

Dual ArmSingle Pass

Double Pass Variance

94 miles 186 miles 92 miles

Resident education

Introduction letter mailed to residents in pilot areas

Cart placement instructions emphasized Driver Cart Tags

Quarterly Newsletter

Single pass service explained – Supervisor in the

fieldResponding to resident questions

Addressing non-compliance

April 2012 – two dual armed trucks begin

collections

One trash collection route

5,491 homes serviced weekly (4 10hr days)

Incentive driver – participated in initial demos

One recycle collection route - Bi –Weekly

Service

7,000 homes serviced every 2 weeks

New driver did not participate in demos.

TRASH COMPARISONcarts miles on route weight carts per avg cart avg load Loads

TRASH serviced driven time minute weight weightDual Arm 22 Yd 48,466 1,238 16,438 1,326,000 2.95 27.36 13,670 97 621.4Single Arm 22 Yd 42,327 1,368 16,946 1,235,960 2.50 29.20 13,290 93 604.1VARIANCE 6139 -130 -507.4 90,040 0.45 -1.84 380

14.50% -9.50% -2.99% 7.29% 18.04% -6.30% 2.86%

RECYCLE COMPARISON lbs percarts miles on route weight carts per avg cart avg load cu yd

RECYCLE serviced driven time minute weight weightDual Arm 22 Yd 26,864 465 16,125 667,740 1.67 24.86 8,196 91 372.5Single Arm 24 Yd 26,791 826 17,876 672,360 1.50 25.10 9,338 72 389.1

VARIANCE 73 -361 -1750.8 -4620 0.1673 -0.2402 -1142 -170.27% -43.70% -9.79% -0.69% 11.16% -0.96% -12.23% -4.25%

Miles per gallon 10% Improvement

   Fuel $ Per mile 14% Improveme

nt   Total Cost Operation 16% Improveme

nt       

• Safety concerns – 2012 resultsSafety concerns with servicing carts on the

opposite side of the cab and not in direct line of sight, relying on camera system and mirrors most of the time.Two property damage incidents in first 30 days. No damage or safety issues in last 5 monthsShadowing on video screen limits visibility.

Camera angle adjusted & improved visibilityThe mental awareness required to service both

sides of the alley (activating joystick switch, observing both sides of alley and cart location) fatigue could lead to missed carts and/or accidents.

Increase # of homes serviced per hour per driver (daily route productivity). Forecasted reduction of overtime hours due to increasing the number of homes serviced per hour per driver.Advantage of single pass in the alley, reducing accident risk.

Elimination of median Rite of Way Truck (left side automated collection)Replacement cost $ 160K

Savings on street and alley repair – single pass reduces infrastructure wear and tearPlano Streets Dept. reports $200k in alley

repairs annually @ average $954 per job. If only 10% result of EWS vehicle damage = savings of $20k per year