The firm was reorganized in late 1986 and expanded into a comprehensive land planning, land surveying, civil and environmental engineering consulting business. It provides these services to clients throughout Southeast Florida for residential, commercial, industrial developments, and municipal work.

Since its establishment in 1971, the firm has displayed a fairly broad experience and expertise in the field of civil and environmental engineering. To support the basic engineering capability, surveying was added in the 1986 reorganization. Leiter, Perez & Associates, Inc. is composed of professional engineers and registered land surveyors supported by a dedicated staff of draftspersons, field crews and office personnel currently numbering about 30 persons. They are working together as a team to provide complete civil and environmental engineering and land surveying services to their clients. Additional personnel are available and will be added as work demands.

In 1997, George Perez's name was added to the Corporate title of the firm and he became President and Chief Operating Officer.

Within the engineering disciplines, primary emphasis is placed on planning, design, preparation of contract documents, and project administration and observation. Over the years, Leiter, Perez & Associates has successfully completed more than 600 projects for their clients. Several recent projects have included complete packages from boundary surveys through final platting and staking, as well as the design of sanitary sewer and water mains, drainage and streets, stormwater master plans and construction services.

Gravity sanitary sewers are a part of the engineering design for nearly every subdivision undertaken. Sizes range from the routine eight inch pipe through fifteen and eighteen inch sizes. The larger pipe sizes become necessary only to handle discharges from smaller pumping stations that are then repumped by a larger, master station. Many of the gravity systems were checked by either infiltration or exfiltration tests to determine their soundness. Contract administration and field observation were also provided by Leiter, Perez & Associates for much of the work outlined in the above paragraphs.

An important part of sanitary sewerage systems in South Florida are pumping stations. Leiter, Perez & Associates has designed, provided contract documents and performed field observation for projects that have included nearly every type of pumping station.

Sewage pumping stations designed range in size from 2 horsepower to 500 horsepower, with sewage flows ranging from 50 to 3500 gpm. Different types of stations were designed ranging from large, flooded suction stations to smaller suction lift, air lift, vacuum, submersible and grinder submersible stations. Most of the stations were equipped for plug-in auxiliary power from portable, trailer-mounted generator sets. The larger stations were designed with permanently-mounted auxiliary diesel generator sets. These sets were placed in free-standing metal enclosures or in concrete block structures built as part of the station.

With pumping stations in nearly every subdivision and municipality, force mains are important, too. Sewage force mains designed amount to well over 150 miles, with contract administration and field observation also provided by Leiter, Perez & Associates, Inc. Projects have varied in size from as short as 100 feet to more than 40,000 feet and pipe diameters have ranged from 4 inches to 36 inches. Pipe material had been cast iron in earlier times, with pvc and ductile iron being used for most installations in the last 10 years. Types of installation varied from the routine direct bury in open trench to subaqueous or aerial (suspended from a structure or on piling) crossings.

Water distribution systems have been part of the engineering design for nearly every subdivision undertaken. Sizes range from the routine six and eight inch pipe through the sixteen inch size. Several projects required pipe sizes as large as 36 inch. The larger sizes are necessary only to handle primary distribution to the areas, with an occasional extension needed to handle future needs beyond the immediate area being served. Leiter, Perez & Associates, Inc. designed and provided contract documents for their clients, and performed field observation and contract administration for most of their projects.

Stormwater management and design have been performed throughout Dade County on projects such as Doral, Cocoplum, Fisher Island, Waterways, etc. These projects varied in size from 160 acres to 600 acres. Methods of disposal for stormwater runoff included drainage wells, french drains, retention basins, etc., predicated on soil stratigraphy.

The surveying group has prepared land surveys of all types, including route surveys, boundary surveys, mean high water, coastal construction line, topographic surveys, and construction layout. Lot surveys and flood elevation certifications are also performed if required or requested. The surveyors are equipped with modern state-of-the-art technology. Field crews use total station equipment with data collectors and electronic distance measuring, one collector being capable of transmitting data over hard wire directly into office computers. Office personnel have computers and plotters using the latest in CAD software to produce plats, survey drawings and drawings for contract documents. Legal descriptions and easements are routinely prepared by office personnel for public and private clients. The firm has prepared condominium documents for major developers in South Florida.

The normal company complement of field crews is four, but as many as six crews have been placed in the field on large projects.

In 1991, Leiter, Perez & Associates started performing public work for Dade County Florida agencies. The agencies included are Miami Dade Water and Sewer Department (design of lift stations and force mains), Dade County Aviation Department (general land surveying and miscellaneous hazardous material services) and Dade County Public Works Department (general land surveying). The contracts have been for $150,000 to over $1 million dollars.

In 1987, Leiter, Perez & Associates began to provide Certificates of Non-existence of Hazardous or Toxic Materials to clients.

Leiter, Perez & Associates, Inc. has performed over 100 environmental audits that included both phase I and phase II review. All samples of water and soil were collected under the approved FDER Quality Assurance Plan. Monitoring wells and soil corings were installed and laboratory analyses were performed by state-approved laboratories under field supervision of Leiter, Perez & Associates, Inc. personnel. Site assessment, remedial action and closure reports are prepared by Leiter, Perez & Associates, Inc. skilled professional staff. Several Contamination Assessment Reports (C.A.R.) and Remedial Action Plan (R.A.P.) have been completed, instituted, and successful cleanups have resulted in an efficient and cost effective method.