J-2 Contracting has a long history at the Pioneer Reservoir Complex in Kersey, CO. J-2's Principals originally owned the land and successfully acquired permits to mine the gravel, installed a slurry wall, and eventually mined the property beginning in 2013. Mining operations created 1800 acre feet of water storage over the following 7 years. The parcel was sold the Central Weld Water Conservancy District (CCWCD) with the intent to add to their available water storage volume. CCWCD contracted with J-2 Contracting to build the infill/outlet infrastructure for Pioneer Reservoir. This entailed constructing a 12' diameter x 78' deep manhole to house a 215 hp pump capable of running at 3750 gallons per minute including the associated outlet piping so water can be removed from the reservoir.

J-2 also constructed a concrete diversion and rundown structure with rip rap slope protection so the reservoir can be filled from the adjacent irrigation ditch. It was a rewarding project for J-2 since we were able to transform an open field into a gravel mine before becoming a critical piece of water augmentation infrastructure in Northern Colorado.

J-2 Contracting was contracted to the Town of Johnstown to replace the failing reservoir outlet under the supervision of the Colorado Division of Water Resources Dam Safety Department. The project primarily consisted of dewatering the reservoir, constructing a new concrete outlet and spillway tower, replacing a large section of the existing dam, riprap lined emergency spillway, toe drain, regrading and surfacing of the multi-use path around the reservoir, and the removal of approx. 19,000CY of Muck excavation to increase reservoir capacity. In addition to the work on the reservoir, J-2 also installed a back-up generator on a constructed foundation/pad with a split face CMU sound wall.

J-2 Contracting was selected by the City of Fort Collins as their CMGC partner on the Environmental Learning Center Flow Restoration project in Fort Collins, CO. This project involved regrading nearly 1800 linear feet of the Poudre River and adjacent floodplain to reduce a headcut that existed on river-right in the corridor. Construction elements included installing a concrete diversion structure and headgate, boulder crest & sill structures, riffles, various custom log structures, wetland/floodplain grading, revegetation and systematic native fish pond designed to help an endangered fish species native to the Poudre River.

J-2 assisted with design completion, value engineering, permitting, procurement, GMP cost estimation, and construction of this amazing project. Beginning at the 60% design phase J-2 was able to assist with value engineering efforts totaling $180K worth savings. To construct major structural river elements J-2 designed a lined clear water diversion ditch that took river flows out of the work zone. The construction of the river corridor was an enormous success and the project worked as intended by reducing the head cut and sedimentation transport while restoring flows in the Poudre River. The ELC project has received numerous awards after completion as a premier river reconstruction project in Colorado.

The 7th Ave. Storm Project was designed and constructed using the CMAR model and included the reconstruction of 4 city blocks in downtown Greeley, CO including 12" waterline 8" & 12" sanitary sewer, 43"x68" HERCP storm sewer, storm sewer water quality structures, curb and gutter, sidewalk, earthwork, and asphalt pavement. J-2 Contracting was contracted as the CMAR at the 30% design phase. Through extensive value engineering efforts we were able to redesign the gas mains/services to run parallel gas mains on each side of 7th Ave. which saved over $100,000.00 in construction costs given that gas services did not need to be lowered under the new storm sewer.

Construction challenges included installation of all wet utilities through 4 blocks in downtown Greeley while maintaining services and access to all residences and businesses. Extensive public outreach we completed by J-2 to inform the local residents and businesses of upcoming construction activities. This included delivering bilingual fliers to all addresses prior to construction activities that would impact their daily travels and/or water/sewer services.

Storm flows were redirected daily as the new storm sewer progressed to ensure localized flooding would not occur. Care was taken to prevent damage to sanitary sewer services on the old sanitary sewer main as the new sanitary sewer main was installed. After the new sanitary sewer main was installed, the sanitary services were cut over to minimize service outages. Water services were installed temporarily using HDPE pipe located on the surface while the old water main was abandoned and the new water main was installed. A high degree of daily coordination was required between J-2, the City of Greeley, and all residents/businesses. This project was completed on time and under budget while minimizing the impacts to the surrounding businesses and residents.

The PECO Site Development Project consisted of full site development of a new facility for Power Equipment Company in Greeley, CO. Constructed items include water, sewer, and storm utility installation, excavation & grading, curb, gutter, sidewalk and asphalt paving.

Constructing a large diameter box culvert and outfall thru the middle of an established neighborhood in Greeley, CO took precise planning and coordination. J-2 rose to the challenge and successfully completed this challenging and complicated project. Constructed elements included large diameter box culvert installation, multiple large diameter waterline lowerings, coordinated water outages, and construction of two large inlet galleries. J-2 was able to construct the project in fewer days than anticipated. The end result was a successful project that eliminated the historical flooding issues in the neighborhood.

The Ashcroft Draw Sanitary Sewer Construction Manager At Risk (CMAR) project included design and installation of 18" Sanitary Sewer Main from HW34 North along 71st Avenue In Greeley, CO. The Project included 320 LF 36" Diameter Bore under HW34 at depths ranging from 21' to 27' deep. Over 4000 LF of 18" Sewer Main at depths from 8' to 27' deep was constructed in total.

J-2 was selected as the CMAR contractor at the 30% design milestone. During the completion of the design we were instrumental at addressing constructability issues, prequalifying specialty contractors for the directional boring scope, conducting a competitive bid process for all scopes not performed by our own forces, and identifying areas to mitigate risk and improve the overall schedule. The CMAR process was effective in mitigating risks associated with utility conflicts and crossing through pre-construction potholing and design modifications. To the extent required water services were relocated ahead of the main construction and storm and irrigation line modifications were made to accommodate the new construction. To further mitigate risk the 54" COG water transmission line position was monitored twice daily to ensure the bore crossing under the utility and HW34 had no adverse impact.

The project included reconstruction of over a mile of 63rd St in Boulder, CO. Major construction items included 3000 LF of storm sewer, 12" water main, a large triple-cell box culvert, retaining walls, multiple water-quality structures, striping, landscaping, irrigation and complete road reconstruction including curb, walk and asphalt paving. Extensive dewatering was required for the construction of the box culvert and retaining wall.

J-2 Contracting constructed the Boyd Lake Ave.& 15th St. Roundabout and Pedestrian Underpass for the Centerra Metro District in conjunction with the City of Loveland, CO. This project consisted of a new storm sewer system, multiple wet & dry utility relocations, construction of a double-cell box culvert, concrete roundabout, concrete curb/gutter/sidewalk/trail, and asphalt paving on Boyd Lake Ave. & 15th St. in Loveland, CO. The construction of the double-cell cast-in-place box culvert allows irrigation flows from the GLIC ditch to cross Boyd Lake Ave. in the northern cell while creating a pedestrian underpass in the southern cell.

Significant dewatering and bypass ditch flows were required during construction. J-2 met the challenge and kept the project proceeding on time and within budget. The project was deemed a huge success by the owner, city, designers and local community as it provides safe pedestrian connectivity from west of Boyd Lake Ave. to the Shops at Centerra while simultaneously reducing traffic congestion on Boyd Lake Ave.

The Pearl Parkway Reconstruction 30th to BNSF in Boulder, CO was a complex civil construction project receiving a high-end streetscape finish. This project involved the construction of Colorado's first Multi-Way Boulevard. Constructed items included 2000 SY mainline concrete paving on Pearl Parkway, 2700 SY decorative concrete paving and sidewalk, curb and gutter, 12,400 SY brick pavers (standard, heavy duty, and porous), pedestrian lighting, detailed site amenities, storm and sanitary sewer system installation, 458 structural Silva Cells for street trees, landscape and irrigation.