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STS Consultants Ltd.

1415 Lake Cook Road, Deerfield,

Ill. 60015-5213; 847-267-8010;

fax: 847-267-8040Services began: 1948.

Frequent services: Real estate audits, manufacturing plant audits, design and analysis of remediation plans, litigation support, UST management and removal, indoor air quality, industrial hygiene.

Occasional services: Design of waste minimization plans, public health risk assessment.

Other services: Remediation activities, environmental consulting to insurers and policy makers, general risk management consulting.

Staff: 381; 77 environmental professionals, including 17 principal consultants, 62 consultants; 11 PEs, 18 CPGs, two CHMMs, one CGWP, one REA.

Clients: 238 environmental consulting clients; 228 corporate/institutional clients.

Branch offices: Detroit, Kalamazoo and Lansing, Mich.; Minneapolis; Green Bay and Milwaukee, Wis.

Service area: Nationwide.

Compensation: By the project; on retainer; by the hour: $60 to $210.

1996 gross revenues: $30.9 million; 63% from unbundled environmental risk management consulting.

Officers: Michael J. Russell, chairman; Thomas W. Wolf, president; Clyde N. Baker Jr., William M. Perpich, senior vps; David P. Harris, executive vp.

Contact: Huron Winstead, business development manager.

Sedgwick Environmental Services

3401 West End Ave., Nashville,

Tenn. 37203; 615-298-1414;

fax: 615-298-9811Services began: 1991.

Parent: Sedgwick Group P.L.C.

Frequent services: Real estate audits; manufacturing plant audits; design and analysis of remediation plans; litigation support; public health risk assessment; regulatory and public policy analysis; UST management and removal; risk profiling; ISO 14000 services; media crisis training; benchmarking; risk rating.

Occasional services: Design of waste minimization plans.

Other services: Environmental consulting to insurers and policy makers, general risk management consulting, environmental claims management, UST claims handling; owner-controlled insurance program mergers and acqusitions due diligence.

Staff: 31; 25 environmental professionals, including 10 principal consultants, 15 consultants; 10 PEs, two CPGs, 12 ARMs, six CPCUs, three CHMMs, five CIHs, one CGWPs, five attorneys.

Clients: 300 environmental consulting clients; 195 corporate/institutional clients.

Specialties: Industrial manufacturing, public entities, retail and service companies.

Branch offices: Orange and San Francisco, Calif.; Washington; West Palm Beach, Fla.; Atlanta; Chicago; Boston; Detroit; Columbus, Ohio; Portland, Ore.; Harrisburg and Philadelphia, Pa.; Columbia, S.C.; Memphis, Tenn.; Dallas; Seattle; Sydney, Australia; Brussels, Belgium; Toronto; London and Manchester, England.

Service area: Worldwide.

Compensation: By the project; on retainer; by the hour: $115 to $300.

1996 gross revenues: $1.2 billion.

Officers: Donna Herrmann Sandidge, managing director-U.S.; Steve Osselton, national director-Canada; Roger Baels, associate director-Brussels; James Kenneally, environmental specialist-Sydney; Marcel Steward, national director-U.K.

Contact: Donna Herrmann Sandidge, 615-783-2503.

Shell Engineering

& Associates Inc.

2403 W. Ash St., Columbia,

Mo. 65203-0045; 573-445-0106;

fax: 573-445-0137Services began: 1975.

Frequent services: Real estate audits, manufacturing plant audits, litigation support, regulatory and public policy analysis, amending Title V permits/applications, emergency response plans.

Occasional services: Design and analysis of remediation plans, public health risk assessment.

Other services: Environmental consulting to insurers and policy makers, general risk management consulting.

Staff: 25; six environmental professionals, including two principal consultants, two consultants; 4 PEs.

Clients: 25 environmental consulting clients; 5 corporate/institutional clients.

Service area: Nationwide.

Compensation: By the hour: $65 to $200.

1996 gross revenues: $1.7 million; 100% from unbundled environmental risk management consulting.

Officers: Harvey D. Shell, president; Charles A. Shell, vp; Karen Curtit, manager-engineering; David Seidel, manager-special engineering projects; Lori Juergens, senior project engineer.

Contact: Karen Curtit.

Squier Associates

P.O. Box 1317, Lake Oswego,

Ore. 97035; 503-635-4419;

fax: 503-635-1430Services began: 1980.

Frequent services: Real estate audits, design and analysis of remediation plans, regulatory and public policy analysis, UST management and removal.

Occasional services: Manufacturing plant audits, design of waste minimization plans, litigation support, public health risk assessment.

Other services: Remediation activities, environmental consulting to insurers and policy makers.

Staff: 28; nine environmental professionals; three PEs, five CPGs, three REAs.

Clients: 50 environmental consulting clients, all corporate/institutional clients.

Specialties: Agriculture, manufacturing, public works.

Service area: Worldwide.

Compensation: By the project; by the hour: $50 to $140.

1996 gross revenues: $2.7 million; 44% from unbundled environmental risk management consulting.

Officers: L. Radley Squier, president; Arlon Rippe, senior vp; Gary Peterson, Saiid Behboodi, Mike Blakinship, vps.

Contact: Mike Blankinship.

Superior

Environmental Corp.

2201 Wolf Lake Road, Muskegon, Mich. 49442-4845; 616-788-5558;

fax: 616-788-5450Services began: 1989.

Frequent services: Real estate audits; manufacturing plant audits; design and analysis of remediation plans; design of waste minimization plans; regulatory and public policy analysis; UST management and removal; due diligence for property transfers, operation and maintenance.

Occasional services: Litigation support, public health risk assessment.

Other services: Remediation activities, environmental consulting to insurers and policy makers, general risk management consulting.

Staff: 90; 63 environmental professionals, including seven PEs, seven CPGs, three CHMMs, one CIH, five CGWPs, two REAs.

Clients: 354 environmental consulting clients; 334 corporate/institutional clients.

Specialties: Financial institutions, insurance carriers, property development.

Branch offices: Sycamore, Ill.; Bay City, Brighton and Grand Rapids, Mich.; Waukesha, Wis.

Service area: Illinois, Indiana, Michigan, Ohio, Wisconsin.

Compensation: By the project; by the hour: $35 to $95.

1996 gross revenues: $10 million; 75% from unbundled environmental risk management consulting.

Officers: James Quince, president/CEO; Fred Timmer, COO; Bob Clark, CFO; Scott Miller, vp.

Contact: Fred Timmer.