"PROMISES MADE, COMMITMENTS KEPT"
Below is a list of "some" of recent projetcs that we would like to share with you. Please visit fequently to see the newest projects.
SOUTH RILLITO INTERCEPTOR REHABILITATION
Rehabilitation of approximately 3.2 miles of 48-inch and 54-inch sewer interceptor line. The work involved slip-lining and cured in place pipe (CIPP) along 3.2 miles of the major sewer interceptor. The work included the installation of 1,054 linear feet of 48-inch CIPP; 10,409 linear feet of 54-inch CIPP; 3,841 linear feet of 44-inch slip-lining; 1,301 linear feet of 48-inch slip-lining; 3 major sewer bypasses pumping 16 million gallons of sewage daily; 12 minor sewer bypasses; 10 manhole reconstructions, 37 manhole rehabilitation, site work concrete, and numerous pavement patches.
Major Risk Items Identified and Solutions Offered/Utilized: The existing Southeast Interceptor Sewer was located directly below Davidson Elementary School. KE&G worked with Pima County and TUSD to schedule the CIPP around the schools hours, and target the summer months to complete the installation. Also, when bypassing a large interceptor, costs can add up quickly. As the CMAR, our CIPP bid packages contained an incentive for early completion. Approximately 25% of the savings would go back to the Subcontractor, and RWRD would receive the balance. This incentive proved beneficial, as the CIPP subcontractor worked around the clock for 28 continuous days to finish early by 18 calendar days. As the final CIPP rehabilitation GMP was progressing, KE&G worked with Westland Resources to assess the feasibility of completing the 3rd phase of the project with slip lining, which would require significantly less bypass pumping. Upon acceptance by RWRD, KE&G was able to return over 1 million dollars to RWRD as project savings by slip lining instead of CIPP rehabilitation for phase 3.
Value-added Options or Differentiators (what you did that other firms would not): The routing of the bypass piping affected the Rillito Walking Path, and also a path used by The Humane Society dog-walking volunteers. Upon increased traffic through the construction zone by volunteers, KE&G and RWRD met with the group to come up with an action plan. KE&G then negotiated with a local subcontractor whose property was directly adjacent to the Humane Society. KE&G then provided a dedicated walking path through the private property which provided safe access to the walking path away from construction activities.
This project was to bring the existing private property site drainage way up to regulation standards. The scope included replacing existing drainage channel with the larger concrete-lined channel, relocating the existing haul road, adding two new culvert crossings of 6 EA 72″ CMP culverts, constructing a new concrete inlet structure, new riprap outflow, and re-pave existing asphalt access road. This project was to be delivered in an abbreviated schedule window with an accelerated start date. Challenges included rock excavation, maintaining the ongoing owner heavy equipment haul roads and traffic, and maintaining a tight schedule. The final contract amount for this project was $1,499,776.
BENSON PLANE BARNS, BENSON, ARIZONA
This project consisted of clearing and grubbing the site, subgrade prep which was minimal due to the site being relatively flat. There was a total of 44 column footings that required over excavation with a 5ft blow out on each side. This was completed using a backhoe and wackers. The slab was constructed of 5” thick reinforced concrete that was poured in sections to accurately get the required .5% slope. Each of the 44 columns had four anchor bolts that were each meticulously surveyed to ensure complete accuracy. The prefabricated building was then erected by Weather Guard under the supervision of KE&G. During the time of the building installation cement-treated base was installed under the areas to be paved to allow for a nice hard subgrade. Once the building reached, roughly 30% complete the electricians and fire suppression installers were brought in to begin running the conduit runs to each of the 12 individual bays as well as the fire riser room and pilots’ room. The building framing was completed in the first parts of January 2019; this allowed KE&G to come in and pave the sloped entrances to each bay. This area is crucial that the slope be low enough to allow easy movement of the aircraft held in each bay as well as shed water to the main drainage ways. Once paved the final items could be completed with inspections ensuring operations of all the systems and tying into the main power feed with SSVEC. The main challenges on this project were the slow response on questions, as well as getting the electrical and fire suppression systems set up with the City Of Benson and SSVEC. This was a great project to add to our projects because this was a unique Design, Bid, Build project in a rural area and on an airfield. We were able to overcome all obstacles through perseverance and great teamwork. This was a collaboration between KE&G Tucson and KE&G Sierra Vista which turned out to be a great opportunity to work side by side with each other.
Roadway reconstruction consists of new median islands, landscaping, a drainage structure, curb, sidewalk, curb access ramps, driveways, and street lighting. New traffic signals will be installed at the Drachman and Speedway intersections and three new bus pullouts will be constructed. In addition, a new water distribution system will be constructed and the old system removed.
Many people have probably heard that Pima County invested about $20,000,000.00 to build a facility for World View, a company which launches “Space Bubbles” over 19 miles high into Earth’s stratosphere. As part of the job, new sewer, water, and dry utilities needed to be installed a little over three-quarters of a mile along the Aerospace Parkway which is located between Hughes Access Road and Alvernon Way about five miles south of our Tucson office. KE&G was the successful low bidder for the sewer installation and dry utility section of the work. In total, we installed utilities for Pima County Wastewater, Cox Communications, Tucson Electric Power, and Pima County Fiber Optics. On May 11, the site was cleared and on May 16, underground crews got started with the new 8” sanitary sewer. Once the new sewer was installed, we immediately followed with the new dry utility joint trench installation. A hard deadline was set by Pima County in order to provide World View with power and water needed to complete the building and remaining site work. This project received the APWA SAB 2016 award of merit under the Public Works Project of the Year Environmental Less than $5 Million categories.
CATERPILLAR TINAJA HILLS DRAINAGE REALIGNMENT
This project was to bring the existing private property site drainage way up to regulation standards. The scope included replacing existing drainage channel with the larger concrete-lined channel, relocating the existing haul road, adding two new culvert crossings of 6 EA 72″ CMP culverts, constructing a new concrete inlet structure, new riprap outflow, and re-pave existing asphalt access road. This project was to be delivered in an abbreviated schedule window with an accelerated start date. Challenges included rock excavation, maintaining the ongoing owner heavy equipment haul roads and traffic, and maintaining a tight schedule.
SIEARRA DENTAL, SIERRA VISTA, ARIZONA
The Sierra Dental project was site work for this facility and completed by our Sierra Vista Team. The team included Ben Carter, John Drake, Cesar Acuna, Rick McMahon, and Ramon Morales. The scope of work included installation of SWPPP BMP’s, removal of existing parking lot & improvements, cut to export 5400 CY, 100’ 4” sewer with clean-outs, 312’ of 4” PVC fire line, 312’ of 2” copper water service, irrigation stub, backflow preventives, 200’ PVC storm drain (6-12”), 604’ of 48” CMP stormwater retention system, 75 CY grouted and dumped rip rap, 518 CY of 4” thick MAG ABC, 724 TN asphalt paving, and parking lot striping. Access was a challenge on this project with only one way in and one way out. The site was very small, which made for a congested construction area with multiple trades working around each other. This led to a request from the general contractor for pricing to pave in two phases, which we completed. Concrete work was removed from our scope of work, and we agreed to bring grade to +/- 0.2.
HARRISON GREENWAY MULTI-USE PATHWAY
This project consists of improvements for a new 3.2 miles long, 12-foot-wide asphalt multi-use pathway. The pathway starting on the South side of Irvington at an existing crosswalk will continue South across Valencia and link up with Mesquite Elementary School. It is a fastpaced project, with limited public impact, and promises to bring a safer exercising and leisure element to the area.
PANTANO RIVERPATH 5th STREET TO SPEEDWAY BLVD.
This project ran parallel to the Pantano Wash between the 5th St. Wash and Speedway Blvd. in Tucson. The project consisted of a 95-foot span prefabricated steel pedestrian bridge, as well as 1,250 feet of the asphalt path, decomposed granite paths, a ramada shade shelter, various landscape features, and project artwork.
22nd STREET SEWER AUGMENTATION
This project consists of the installation of 5,485 LF of new 12-inch sanitary sewer. The selected stretch to be augmented is along 22nd Street from Alvernon Way, downstream end, to Swan Road, the upstream end. The existing adjacent sewer line is 10 inches in diameter vitrified clay pipe (VCP) between Alvernon Way and Swan Road.
The KE&G team identified the following key risk areas to address through the pre-construction phase of the project: traffic, utility coordination, and bypass routing. The team established relationships early on with the City of Tucson Department of Transportation (TDOT), Tucson Water and other utilities, and worked with Kaneen Communications to connect to area businesses and residents. To minimize traffic, KE&G decided to complete the project while avoiding rush hour traffic. Crews worked 4-10 hour shifts starting after 7:00 PM and day crews worked 8 hours per day while avoiding rush hour. Utility coordination was key during the project.
While construction was progressing, additional potholing was being completed at utility crossings in future construction areas. KE&G identified a 54-inch diameter concrete cylinder pipe water main which varied from the design by 2+ feet. KE&G brought the potential conflict to the attention of the owner, then proceeded to assist the design team with the modifications to eliminate any standby. The redesign was completed over a weekend and accepted on Monday morning in time for the redesign work to be started that night. To avoid traffic disruption while completing the sanitary sewer flow management, KE&G worked evening hours in addition to modifying the routing through drainage avoiding disruption of the 22nd Street & Swan Road intersection.
I-19/PIMA MINE ROAD
The I-19/Pima Mine Road bridge widening and resurfacing project is a $4.7 million consisting of almost 800 cubic yards of structural concrete removal and 22,000 square yards of pavement removal, ½ mile of paved, 2 lane detours, new lighting at bridge, 10 drilled shafts in excess of 50 feet in depth, 6 new bridge columns and 12 new bridge beams, abutment and pier cap extensions, forming and placement of almost 1,000 cubic yards of new, structural concrete, over 200,000 pounds of rebar and over 10,000 tons of asphalt. The project is located South of Tucson, near the Town of Sahuarita and was scheduled to take approximately 13 months to complete. The project is for ADOT and involves multiple agencies including the Tohono O’odham Nation, Union Pacific Railroad, Tucson Electric Power, the Town of Sahuarita, Central Arizona Project and the ASARCO Grupo Mexico.
VALENCIA ROAD WIDENING: ALVERNON WAY TO WILMOT ROAD
This project involved the widening and reconstruction of Valencia Road from Alvernon Way to Wilmot Road in order to improve safety, reduce congestion, improve operations and increase mobility. Specifically, the project widened the existing roadway from four lanes to six lanes including the widening of the bridge structure over the Union Pacific Railroad as well as the interchange at I-10 and Valencia Road. Other improvements included depressed landscaped medians, multi-use lanes, provisions for pedestrians, and landscaped shoulders.
The overall project included widening approximately 3.3 miles of roadway. Work included 300,000 cubic yards of mass excavation and recomaction, the installation of 7,091 linear feet of 18 inch – 60-inch drainage pipe, 200 linear feet of 10-foot x 5-foot box culverts, bridge widening over the UPRR, and 4,750 linear feet of water line with multiple valves and tie-ins to Tucson Water. In addition, new traffic signals installed as well as 307,970 square yards of landscaping, 70,996 square feet of sidewalk, approximately 70,000 linear feet of concrete curb, and 70 curb access ramps.
INA ROAD AT SR-77 INTERSECTION IMPROVEMENT
KE&G working for the Pima County Department of Transportation in conjunction with the Regional Transportation Authority, Town of Oro Valley, and Arizona Department of Transportation; the Ina Road at SR77 (Oracle Road) project is nearing completion. This will be the first-ever indirect left intersection to be constructed in the state of Arizona. This intersection is the second busiest intersection in Pima County, with over 96,000 vehicles passing through it daily. This improvement project was designed to increase the capacity at the intersection by eliminating the designated left turn signal time onto Oracle Road and the addition of dual right-turn lanes onto Oracle Road northbound.
It has been evident over the past few weeks how much the new traffic configuration has improved the general flow of traffic, decreased traveling delays, decreased west bound traffic congestion on Ina Road and decreased traffic cutting through neighborhoods adjacent to the intersection. The project includes the installation of over 1,500 LF of storm drain, 15 new storm drain structures, 9,875 CY of roadway excavation, over 3,900 TONS of asphalt paving, a new bus pullout, two new indirect left-turn intersection, the reconstruction of the Ina Road/SR77 intersection signals, 6,100 LF of concrete curb, over 480 CY of hand placed rip rap, and 8,200 SF of decorative concrete pavers. The majority of this project was constructed at night, with working hours from 8:00 p.m. to 5:00 a.m., there was a tight 60 working day schedule as well. However, even with 16 utility delays, 161 force account items, and 39 requests for information, this job is still scheduled to finish within the allotted contract time.
LA ESTANCIA PHASE 7
The scope of work included; earthwork, underground, concrete, and paving as part of New Development of 100 Lots for Richmond American Homes. Unique challenges: This project was built off of a 10-year-old set of plans that had been prepared by a firm that was no longer in business. KE& G had to work closely with City personnel and a new Engineering Firm to ensure compliance with current standards. Many field fits and alterations were required due to plan errors and omissions.
SOUTHEAST INTERCEPTOR (SEI)
This CMAR project consists of installing approximately 4 miles of 36 inch to 48-inch sewer through the jurisdiction of Tucson and South Tucson. It involves augmenting a portion of the existing Southeast Interceptor (SEI) along 36th Street between 18th Street and Euclid Avenue. This Construction Manager at Risk (CMAR) project, started with pre-construction services to develop the routing for the almost three miles of sewer main that averaged 20 feet in depth through extensive utility corridors and congested urban areas. The design of this sewer line required the coordination with City of Tucson, City of South Tucson, ADOT, Tucson Water, Union Pacific Rail Road, City of Tucson Electrical, Kinder Morgan, Century Link, Comcast, and worked with Kaneen Communications to connect area businesses and residents.
This project also required phasing the construction into four ADEQ submittals to allow for the construction of the sewer main. After this project, the sewer main will also add two odor control structures and eliminate a chemical dosing unit that required additional material and maintenance to operate. In coordination with the City of Tucson, this project completed a future portion of the urban greenway project and also provided access for PC RWRD maintenance vehicles, all while beautifying the existing railroad right of way.
During construction, the project team installed the new sewer main up to 27 feet deep, crossed the largest water main in the City of Tucson, crossed large diameter high pressure gas lines, crossed railroad tracks, installed seven large diameter jack and bores, protected existing railroad tracks and a bridge, relocating existing waterlines, crossing numerous utilities, replacing curb/drainage/ADA ramps/sidewalks, repaving, restoring traffic signals, striping, and much more. To facilitate the sewer installation the project team developed and implemented a bypass plan that utilized gravity bypass to minimize costs/maintenance, installed and operated flow management that diverted all of the existing sewage from the existing Southeast Interceptor which is approximately 12 mgd.
This project will aid in the control of sewer flows for the potential development of the Aerospace corridor and allow for the redirection of flows for future repairs along the SEI.
During the design process, evaluation of existing utilities, traffic, and construction sequencing we completed to determine if boring and the method of boring utilized was adequate for each potential boring location. Each area evaluated these impacts, the associated costs, and risk associated to determine the optimum solution for the project.
Existing sewer lines in the area that was historically problematic were eliminated or repaired. These lines created long business connection services or odor problems that resulted in additional costs and maintenance for the County.
Another benefit of this project is the preparation for the new Old Nogales Sewer line which can be connected to the SEI without bypass pumping.
When unknown utilities were encountered, the project team was able to efficiently coordinate with local utilities to determine the solution and coordinate relocation with KE&G directly due to existing contracts in place with those utilities.
During the design phase, the project team developed a sound public relations program. Due to this program, the first three phases of this four-phase project have been completed with understanding and support of the surrounding residents. One of the biggest opponents of the project has now supported the project and commended our team on this program and the construction progress. Another significant development during the design phase was the coordination with multiple other construction projects that are planned or in progress in the area. These projects include private developer-funded projects directly adjacent to the SEI project and Pima County/City of Tucson projects that will be constructed after the SEI project is completed.
CORTARO FARMS AND MAGEE RD IMPROVEMENTS
The project consists of a total of 1.95 miles of road improvements including 1.65 miles of Cortaro Farms Road/ Magee Road, from Thornydale Road to Mona Lisa Road, and 0.30 miles of Shannon Road. The construction consists of four lanes of roadway with medians, curbs, sidewalks, traffic signals, landscaping and irrigation, utility work, retaining walls, soil nail walls, noise walls, and drainage facilities. Also, improvements were made to the existing Canada del Oro Wash Bridge as well as the installation of a new concrete girder bridge over the Canada del Oro Wash. This project was completed approximately 50 days ahead of the allowable contract time and under budget. Two value engineering designs, as well as revised ridge deck drain design, were submitted and approved by Pima County saving KE&G upwards of $30,000.00.