Trenchless Technology, in general, is a method of construction for replacing sanitary sewer, water, stormdrains and gas pipelines without the disruptive aspects of conventional open cut excavation. AUI's trenchless technology division has over 10 years experience in the areas of Pipe Bursting and Sliplining and has completed multiple trenchless projects that required adherence to stringent specification and safety requirements

Pipe Bursting

Pipe Bursting is a process that involves pulling a bursting tool through the old pipe, thus expanding the old pipe and pushing its fragments into the surrounding soil, while simultaneously pulling in an new pipe of equal or larger diameter in place.

Sliplining

Sliplining involves sliding a liner pipe of slightly smaller diameter into an existing pipeline, grouting of the annular space, and reconnecting the service connections to the new liner.

Manhole Rehabilitation

Manhole Rehabilitation is a system consisting of the application of cementitious mixtures formulated specifically for the manhole environment. The cementitious mixtures are sprayed directly to the manhole wall and bench to provide structural integrity, corrosion protection and stop infiltration.

Before

After

Vacuum Excavation

Vacuum Excavation is a trenchless process of potholing for existing utilities by making a small excavation, usually 4" to 6" diameter, without conventional digging. High pressured water is used to cut through the soil and a vacuum line extracts the soil into a storage tank. This process is a safe and reliable method for locating existing utilities.

AUI has pipe burst over 70,000 Lf of existing pipeline with pipe sizes ranging from 4" to 24". AUI utilizes two different Pipe Bursting Systems. The first is a Hydraulic System manufactured by Trenchless Replacement Systems (TRS)and the second is a Pneumatic System manufactured by Vermeer Equipment

Lengths are in Linear Feet

Project	Owner	Year	Length	Material
Ruth Street and Demerse Sanitary Sewer Rehabilitation Project	City of Prescott, AZ	2006	7,428	8" HDPE
Lee Street Pipe Bursting	City of Las Vegas, NM	2006	1,040	8" HDPE
Veterans Affairs Hospital Sewer Loop Repairs	NM VA Health care System	2005	933	8" HDPE
TA1 Waterline Rehabilitation Project	Sandia National Laboratories, DOE, Kirtland AFB, NM	2005	2,967	6", 10" and 12" HDPE
City of Fort Collins Pipe Bursting	City of Fort Collins, CO	2005	1,340	8" HDPE
Tatum 2004 water System Improvements	Town of Tatum, NM	2005	3,900	10" HDPE
Replace Water Distribution Lines and Replace Sewer Lines	Town of Vaughn, NM	2005	900	10" HDPE
City of Clovis Emergency SAS Pipe Burst	City of Clovis, NM	2004	514	10" HDPE
City of Carlsbad Pipe Bursting Project	City of Carlsbad, NM	2004	864	10" and 18" HDPE
North Atkinson Avenue	City of Roswell	2004	5,890	8", 12" HDPE
Phase I Collection System Repairs	City of Belen	2004	5,791	8", 10", 12" HDPE
Jemez Springs Pipe Bursting and Manhole Rehabilitation	Village of Jemez Springs	2004	512	8" HDPE
Taylor Wells No. 4 — Las vegas	City of Las Vegas	2003	605	12" HDPE
Las Vegas Sewer System Improvements	City of Las Vegas	2003	15,812	10", 12", 16" HDPE
Camino de la Placita Phase II	Town of Taos	2003	1,185	10" HDPE
City of Fort Collins Pipe Bursting	City of Fort Collins	Ongoing through 2006	782	8", 12" HDPE
Compound Condominiums Pipe Bursting	Compound Condominiums	2003	1,555	6" HDPE
MESA Utilities Corridor project	Sandia National Laboratories	2002	115	8" HDPE
Sanitary Sewer Collection System Improvements, Phase II	City of Santa Fe	2001 — 2002	11,710	8",10" & 12" HDPE
Village of Pecos Water and Sewer Pipeline Improvements	Village of Pecos	2001	1,190	8" HDPE
CityNet Telecommunication Sewer Repair	CityNet Telecommunications, Inc.	2001	1,809	8"& 12" HDPE
Holloman Air Force Base Pipe Bursting	US Army Corps of Engineers	2001	950	8" HDPE
Intel Fab 11X Pipe Bursting	Intel Corporation	2001	640	12" HDPE
I-25/I—40 Interchange (Big I)	NMSHTD and City of Albuquerque	2001	345	12" HDPE
Comanche Road Reconstruction	City of Albuquerque	2001	3,035	12" HDPE
15th St. Scenic Drive Sewer line Replacement	City of Alamogordo	2000	806	12" HDPE
US 84/285 Sewer Line Renewal	City of Espanola	2000	3,223	10" HDPE
Rio Grande Blvd. Interceptor Sewer (Indian School to Floral)	City of Albuquerque	2000	781	22" HDPE
Town of Taos Sewer Improvements	Town of Taos	1999	111	8" HDPE
Emergency Pipe Burst (Rio Grande and Indian School)	City of Albuquerque	1999	1,873	18" HDPE
Omaha Sanitary Sewer Replacement Pipe Bursting	City of Omaha	1999	2,200	8" No-Dig Clay Pipe (Vitrified Clay Pipe)
Sanitary Sewer Rehabilitation	Village of Ruidoso	1999	2,896	12” HDPE
Green Bay Metropolitan Sewage District, West Fox Interceptor Replacement	Metropolitan Sewage District, WI	1999	3,250	22" HDPE
Santa Fe Point Repair — 24" Pipe Bursting	City of Santa Fe	1998	393	24" HDPE
Pipe Bursting Pilot Project, 24 — Inch Sanitary Sewer Line (Alley North of Polk Street West of Grand Avenue)	City of Phoenix	1998	521	24" Vitrified Clay Pipe (VCP)
Los Alamos National Laboratory Pipe Bursting	Los Alamos National Laboratory	1998	492	8" HDPE
Zone 3ER Water and Sewer Replacement	City of Albuquerque	1997	2,013	8" HDPE
Sanitary Sewer Rehabilitation and Replacement, 3 Year Collection System Improvements	City of Santa Fe	1997	8,107	8", 10" & 12" HDPE
Lomas Blvd. Rehabilitation	City of Albuquerque	1996	1,316	12" HDPE
Emergency Sewer Repair	City of Santa Fe	1996	600	8" HDPE
Washington Suburban Sanitary Commission (WSSC) Sewer Rehabilitation	WSSC	1995	3,400	8" HDPE
Matthew Avenue Pipe Bursting	City of Albuquerque	1995	961	8" HDPE
FY 92 Water and Sewer Replacement	City of Albuquerque	1994	1,679	8" HDPE
Emergency Pipe Burst, Arno East Alley	City of Albuquerque	1994	650	8" HDPE
Line Berry Museum	Line Berry Museum	1993	50	6" HDPE
Emergency SAS Replacement Central Avenue	City of Albuquerque	1993	685	8" HDPE
Sandia National Laboratories Sewer Rehabilitation	Sandia National Laboratories	1993	95	10" HDPE
Los Alamos National Laboratory Gas Line Replacement	Los Alamos National Laboratory	1993	1,300	3" HDPE
Santa Fe Sewer Rehabilitation, Phase I	City of Santa Fe	1992	13,656	8" HDPE
Total LF of Pipe Bursting To Date			124,002