2019 SUSTAINABILITY REPORT

Herington Quarry ReceivesGovernor’s Reclamation AwardHamm was proud to be awarded the 2019 Governor’s Mined Land Reclamation Award for its reclamation work on the 80-acre Herington Quarry surface mine. The quarry was in operation from 1980 to 2010 and nearly 1.5 million tons of limestone were produced from the location over that time. The landowner, Delbert Presslor, had a longtime vision of transforming the property into a sanctuary for native plants and wildlife. Hamm partnered with Mr. Presslor, the Depart-ment of Wildlife, Parks, and Tourism, and with the Wildlife Habitat Council to create and achieve this plan. The site is now established with rich vegetation, a bobcat sanctuary, two large ponds, and 10 acres of food plots with edible vegetation for the burgeoning wildlife population. Mr. Presslor unfortunately passed away in August of 2017. It was an honor to benefit the local com-munity sustainably and be a part of his legacy.

Buildex Invests inOperational ImprovementsBuildex, Hamm’s lightweight aggregate division, took on a large-scale process improvement project by adding a 1,700-foot conveyor to their plant site. This conveyor project replaced the lengthy process of transporting loaded material via dump truck from the pit to the storage site prior to being kiln fired. This saves approximately 65 gallons of diesel fuel per day in the loader alone and improves efficiency, safety, and quality control on-site.

Community PartnershipsCommunity engagement is an integral part of Hamm’s operations. On Friday afternoons, employees can be found volunteering at the Topeka Rescue Mission. Construction materials were also donated to the St. Jude’s Dream Home Giveaway in Topeka, with all proceeds benefiting St. Jude’s Children’s Hospital. Hamm offers tours of its facilities to the local community, and has provided tours to members of the Lawrence Chamber of Commerce and KU Environmental Students.

Recycling & ReturnsThe Material Recovery Facility (MRF) returns what would have been landfilled trash back to markets around the world, and helps Lawrence, Kansas residents create a more sustainable future for their communities.

ALEN

T

221,824817,370 73,520 4,087 291 33,274

EQUI

V Rolls of FiberkWh of Electricity1 Trees2 Barrels of Oil3 Automobiles4 Bikes5Glass Insulation6

RECY

CLED 4,325 TONS2,096 TONS 1,076 TONS 288 TONS 200 TONS 2,218 TONS

of Newspaper &of Cardboard of Plastic of Tin of Aluminum of Mixed GlassMixed Paper

Equivalent for material recovery returns were estimated based on the following resources: 1. www.bir.org/industry/paper/ 2. www.recycling-revolution.com 3. www.plasticsindustry.org 4. www.worldsteel.org 5. Specialized Bicycle Components, Inc 6. Ripple Glass, www.sustainability.owenscorning.com

KSCO

BC OKKansasCity

AGGREGATES

HAMM MAIN OFFICE609 Perry PlacePerry, KS 66073

WASTE SERVICES 16984 3rd StLawrence, KS 66044

MATERIAL RECOVERY FACILITY26195 Linwood Rd Lawrence, KS 66044

MENOKEN ASPHALT PLANT 2530 NW Menoken RdTopeka, KS 66618

LAWRENCE ASPHALT PLANT1705 N 1399 Rd Lawrence KS 77045

GRANTVILLE QUARRY2546 Clark RdGrantville, KS 66429

ONAGA Quarry 18184 Fremont RdWheaton, KS 66521

TROY Quarry853 210th RdHighland, KS 66035

WOODBINE NORTH QUARRY 1731 Union RdChapman, KS 6743

LILLIS QUARRY 1988 Bobcat LnFrankfort, KS 66427

CUMMINGS QUARRY965 McPherson Rd Cummings, KS 66016

EUDORA QUARRY1213 E 2400th RdEudora, KS 66025

LEAVENWORTH QUARRY19691 Springdale Rd Leavenworth, KS 66048

BUCHHEIM QUARRY1453 E 550 Rd Lawrence, KS 66049

DEDONDER QUARRY6905 Riley Creek RdSt Marys, KS 66536

OSAGE CITY QUARRY3300 W 269th StOsage City, KS 66523

CST: TOPEKA2450 Waterworks DrTopeka, KS 66606

CST: FORBES147 ForbesTopeka, KS 66619

CONCRETE SUPPLY (CST) & BUILDERS CHOICE MAIN OFFICE2500 SW East Circle Drive N.Topeka, KS 66606

CST: HOLTON415 E. 4th StHolton, KS 66436

CST: OZAWKIE6200 KS-92 Hwy.Ozwakie, KS 66070

BUILDERS CHOICE: AGGREGATES OAKLAND1105 NW Lower Silver LakeTopeka, KS 66608

NORTH LAWRENCE QUARRY16984 3rd StLawrence, KS 66044

BUILDERS CHOICE: OTTAWA745 N Locust St.Ottawa, KS 66067

BUILDERS CHOICE: OSAGE CITY414 N Martin StOsage City, KS 66523

BUILDERS CHOICE OF MISSOURI3907 S 40th TerraceSt. Joseph, MO 64503

BUILDERS CHOICE: EMPORIA1001 W 4th Ave.Emporia, KS 66801

BUILDERS CHOICE: SALINA2601 Centennial RdSalina, KS 67402

BUILDERS CHOICE: NEW STRAWN220 N. Industrial DrNew Strawn, KS 66839

BUILDERS CHOICE: GARNETT840 Elm StGarnett, KS 66032

BUILDERS CHOICE: TOPEKA6721 NW 17th St.Topeka, KS 66618

RD JOHNSON EXCAVATING1705 N 1399 Rd Lawrence KS 77045