The Passaic Valley Sewerage Commission

Plant Expansion and Miscellaneous Interceptor Improvements

(PVSC) is the largest wastewater treatment facility in the Eastern United States and the fourth largest in the nation, providing an interceptor system and wastewater treatment facilities for over 1.4 million people in 48 municipalities and more than 5,000 industries and businesses in the Lower Basin of the Passaic River, from the Great Falls in Paterson to the river-mouth at Newark Bay, 156 acre site of the 125 acre PVSC Treatment Plant.

Phase I, designed by CAMCE, and the construction, provided facilities to treat an average of 300 MGD, and a maximum of 720 MGD during storms commenced in 1977 and was completed in 1981.

Phase II construction, begun in 1982 and completed in 1986, involved the construction of 12 primary settlings tanks, each 90 feet in width by 280 feet in length. Combined Sewer Overflow Study: The study included an engineering evaluation of the sewer system and regulating chambers as well as environmental assessments for the various remedial alternatives.

The Passaic Valley Sewerage Commission

Interceptor Sewer Modeling and Rehabilitation of Sewers

(PVSC) is the largest wastewater treatment facility in the Eastern United States. The combined sewer system includes approximately 21.20 miles of the main interceptor ranging from 3.5 feet diameter circular in Paterson to 12.5 feet high horseshoe interceptor in Newark, and a 12-ft diameter, 5 mile long outfall terminating at Robin’s Reef in New York Harbor, 11 branch interceptors, nearly 2,000 miles of lateral sewers owned by the various contributing towns, traversing river crossings, inclusive of regulators and metering equipment, manholes, the two major upstream pumping stations at Clifton and Passaic and the main pumping station at Newark.

CAMCE conducted an engineering assessment of 150,000 linear feet of main interceptor and/or branch sewers, which were televised, after review of available data on the system a computer model of the entire system was prepared.

Phase I to III: Involved Design and Construction services provided for rehabilitation of around 9,400 ft ft. of Main Interceptors of sizes varying from 36 inches to 54 inches and 5,500 ft. of 36-inch to 54-inch diameter sewers using slip lining with polyvinyl chloride pipe; and 1,500 ft. of 30- inch to 54-inch diameter sewers using glass reinforced plastic panels, and replacement of 1,300 ft. of 24 inch diameter circular sewers.

The Current Phase IV: involves rehabilitation of 7,900 linear feet of large cross-sectional areas of the Main Interceptor ranging from 65 to 90-in heights.

Linden Roselle Sewerage Authority, Linden, New Jersey

Plant Expansion and Upgrade

The Linden Roselle Sewerage Authority operates a Wastewater Pollution Control Plant in Linden, New Jersey. It utilizes a two-stage biological treatment process comprised of primarily clarifiers, plastic media roughing filters, an activated sludge system with aeration tanks and secondary clarifiers. CAMCE evaluated the existing chlorine disinfection system for compliance with chlorine produced oxidants (CPO) limits. CAMCE concluded that the ultra-violet (UV) disinfection system is the most cost-effective method and would eliminate potential health and safety risks associated with the use of chlorine and sulfur dioxide for chlorination/dechlorination.

The study culminated in construction of a UV Treatment Facility, housed in the location of existing Chlorine Contact tanks. The existing chlorine contact tanks were modified to create four concrete channels, 38 feet long, 8 feet wide and 67 inches deep. Each channel was fitted with six banks of four UV modules, for a total of 96 modules. Each module consisted of 40 low pressure mercury lamps.

Town of Mount Pleasant, NY

Rehabilitation and Replacement of Sanitary Sewers

The Town of Mount Pleasant undertook the cleaning and rehabilitation/replacement of the existing sewers in order to improve their sewer system. CAMCE was instrumental in design and construction of the rehabilitation of the sections of sewer slated for rehabilitation/replacement based upon the results of a television inspection.

Phases I through IV entailed television inspection, cleaning and rehabilitation of approximately 55,700 linear feet of 8-inch diameter various types of sewer lines with cured in place liner, and replacement for 500 linear ft. of 6-inch diameter vitrified clay pipe (VCP) sanitary sewer line with 8 in. diameter VCP Pipe utilizing pipe bursting technology. CAMCE is currently working on Phase V, which entails cleaning, television inspection and rehabilitation of approximately 30,000 linear feet of 8-inch dia. various types of sanitary sewers with cured-in-place liner, and television inspection of additional 50,000 linear feet of sanitary sewers to assess their condition for rehabilitation in future.

Northeast Monmouth County Regional Sewerage Authority

Plant Expansion and Upgrade

The NMCRSA wastewater treatment facility services an area of 35 square miles, consisting of six communities, various industrial customers and two military bases. The facility opened in 1971, and was designed for a 1985 average flow of 10 MGD, but reached its rated capacity by 1991. CAMCE, was retained by the authority to prepare the preliminary design of expansion and upgrade from 11.4 MGD to 17.23 MGD.

CAMCE prepared a design report for improvement to the plant. A process/flow model was prepared for the existing plant and for the proposed additional facilities for expansion and upgrade, as was a hydraulic profile. The report evaluated alternative treatment processes and made final recommendations in the form of a preliminary facility design. This included design of Main Pumping Station, Headworks, Aeration System, Final Clarification System, Effluent Filters, Effluent Pump Station and Non-potable Water System, Sludge Processing system, and Odor/VOC Control systems. A detailed capital and operating cost was developed for the proposed improvements.

Carney's Point Township Sewerage Authority, NJ

Design of Sewage Treatment Plant Modifications

The EPA presented the Award for Operations and Maintenance Excellence to the Authority for their upgraded facility which was designed by CAMCE, the said design being an upgrade of the existing primary sewage treatment plant to a tertiary plant with a capacity of 1.3 MGD.

The improvements included modifications to the two primary settling tanks and pumping station, and primary settling tanks were redesigned, and a new aerated grit chamber, two four-stage rotating biological contactors, two final settling tanks, a tertiary filtration system, an effluent pumping station, chlorination facilities, a new service building and a primary and secondary digester facility were constructed.

City of Rome, New York

Existing and Proposed Improvements to the Septage Receiving Station

CAMCE has been involved with the City of Rome's wastewater treat¬ment facilities since 1965. We constructed a Septage Receiving Station (SRS) for City residences without sewers and eventually enlarged for the Outer Corporation limits within the City. We are presently proposing, under a NYSDEC Consent Order, to modify and improve the SRS to include better grit handling, aeration, chemical additions and flow monitoring. Work under the Consent Order is part of an update of the City's Pretreatment Program referred to as "Head Works" analysis.

The proposed improvements include a new Chemical Feed System consisting of storage tanks and chemical feed pumps. In order to expand the plant, the first step was to rehabilitate the head end facilities without increasing the hydraulic surcharging of the interceptor system. This task was accomplished by adding a new grit removal system of the same type in addition to the existing system. The renovation included the use of hydraulic grit equipment, control of dispersion into the primary settling tanks and the provision for additional grit washing facilities to accommodate the plant's current and future capacity.

Linden Bulk Transportation Co., Inc. Linden, New Jersey

Wastewater Pretreatment System

This project involved conducting a wastewater treatability study and based on the results, subsequently designing a wastewater pretreatment system for this facility. The pretreatment system generates high strength, high variability wastewater from the daily washing of as many as one hundred tanker trucks.

The approach which was adopted was two pronged. First, it was demonstrated to the local Publicly Owned Treatment Works (POTW) that higher loadings could be handled by the facility without adverse impacts on the current treatment process. Secondly, a treatment system which chemically conditions and clarifies the wastewater by means of dissolved air floatation, was installed in order to reduce the loadings and remove any free oil from the stream.

After two years of successful operation, as per the requirements at that juncture, an ultra filtration system was evaluated and found to be capable of treating the wastewater to quality levels that would permit recycling. Recycling would not only allow the facility to function as a closed loop operation, recovering a substantial portion of the cleaning products for future use, but would also eliminate the costs associated with the wastewater discharges.

City of Paterson, New Jersey

Design, Permitting and Construction Administration of Combined Sewer Overflow [CSO] Floatables/Solids Control Netting Facilities

The City of Paterson is served by a combined sewer system which conveys both wastewater and storm water to the Passaic Valley Sewerage Commissioners Transport System. During storm events the excess combined flows are diverted to the Passaic River at the regulators via outfall pipes. The “Sewerage Infrastructure Improvement Act” (SIIA), passed by the New Jersey State Legislature in 1989, required planning, design and construction of facilities to reduce floatables/solids from the combined sewer overflows.

Designed netting facilities at seven outfalls (with design flows of 20 MGD to 90 MGD) and two CSO diversions to control floatables/solids at nine overflows.

Design of Combined Sewer Overflow Netting Facilities at five outfalls to the Passaic River in various roadways and easements within the City of Paterson; Replacement of 425 linear feet of 20x30 inch diameter Vitrified Clay Pipe (VCP) sanitary sewer with 30 inch RCCP class UV pipe, manholes, inlet chambers, and appurtenances.

Town of Mount Pleasant, NY

Pocantico Hills Raw Water Supply Facilities

The Pocantico Water Treatment System, originally comprised of four lakes, a pumping station, and a water distribution system, with a filter plant added in 1952 to improve the water quality. It currently serves the nearby estates and residential district.

To bring the treated water in compliance with the drinking water regulations, CAMCE was retained by the Town to upgrade the facility. The modifications included installation of two 0.5 MGD package upflow clarification/rapid gravity filtration units, chemical conditioning systems, and a new vertical turbine type pumping station, sized to be retrofitted into the existing building. In conjunction with the plant modifications, the water source/collection system was modified to include a raw water transfer pumping station to the four lakes, valve chambers, intake structures, construction of overflow spillway, replacement of sluice gates and raising of the height of the existing dam. The plant is operated by means of a SCADA system located within the offices and laboratory, and can be remotely operated from an offsite location of the Town's operating facility.

Village of Ossining, NY

Cleaning and Cement Mortar Lining of Water Mains

As part of the upgrade and improvement to the existing water distribution system, CAMCE has provided the engineering services to the Village of Ossining for cleaning and cement mortar lining of aged cast iron water mains. The phased work entails cleaning of cast iron water mains and placing an approximately 3/16 inch thick cement mortar lining in the cleaned pipes, replacement of 6 and 8 inch diameter water mains, replacement of curb stops and curb boxes, installing/replacing the existing fire hydrants and gate valves, and valves on the water main. All lead service connections between water main and curb stop are replaced with one inch diameter copper pipes. A temporary water bypass piping provides potable water and fire protection to the consumers being isolated.

A total of approximately 33,000 linear ft. of 6 and 8-inch dia. cast iron water mains have been cleaned and cement mortar lined and 1,200 linear ft of cast iron pipes replaced with 6-inch dia. Class 53 D.I. Pipes. The next phase involves replacement of approximately 8,000 linear ft. of 6-inch diameter cast iron pipes with 8 and 12-inch dia. Class 53 D.I. pipes.

Town of Mount Pleasant, NY

Design of Elevated Water Storage Tanks

In order to comply with the Surface Water Treatment Rule issued by the New York State Department of Health and to bring the water system into compliance with the water quality regulations, the Town of Mount Pleasant opted to construct a new pumping station, transmission mains and elevated water storage tanks. The major component of the project is the elevated water storage tanks, which provide contact time for disinfection. CAMCE used a customized computer program to simulate all the varying parameters which can affect the required contact time such as pH, temperature, chlorine residuals, diurnal and seasonal flow variations, future demand needs, and fire flow, which supported construction of twin 2 million gallon water storage tanks. Thus the tank sizing was optimized to minimize the expense. CAMCE selected and designed hydropillar style tanks (fluted column), in part because of the need for storage space and to house the water department's working facilities.

Town of Mount Pleasant, NY

Design of Commerce Street Pump Station

In conjunction with the design of twin 2-million gallon water storage tanks and an interconnecting transmission main required to achieve compliance with the Surface Water Treatment Rule, the Commerce Street Pump Station was the key component needed to deliver water from the source, the Catskill Aqueduct, to the new water storage tanks.

CAMCE designed the pump station, which houses three constant speed centrifugal pumps, sized to transport 8.0 MGD of water from the source to the new storage tanks. Numerous in-house customized programs were utilized in the design including a water quality program to determine the required chlorine dosage for CXT compliance; a program simulating present and future design flows, seasonal/diurnal variations and fluctuating supply source levels to analyze the hydraulics; and a program which performed dynamic simulations of tank levels at one minute intervals to create an efficient control sequence for the pumps. The pump selection was based upon optimum pumping efficiency to deliver the high head levels required, thus reducing the operating costs. The pump station also housed a 1,500 kW emergency generator as a secondary power source, housed in a room lined with acoustical blocks designed to attenuate noise from the equipment to decibel levels permitted under the Town codes.

As part of the Consolidated Water Treatment Facilities for the Town of Mount Pleasant, New York, a 24-inch diameter transmission main was constructed from the new Commerce Street Pump Station to new water storage facilities

The transmission main is cement mortar lined Class 56 ductile iron pipe, rated for 350 psi working pressure.

As the transmission main’s route has several dips and vertical bends, the pipe was provided with combination air release valve assemblies for both air and vacuum relief during the filling.

The transmission main is nearly 10,000 feet in length, with over 8,600 feet of the main installed in Commerce Street and Stevens Avenue. Installation of the main entailed excavation of rock in environmentally sensitive areas adjacent to drainage tributaries to the Kensico Reservoir.

CAMCE resident engineer enabled the project to successfully cross two environmentally sensitive streams with the water main with no negative environmental impact to downstream water quality or protected flora and fauna. The transmission main and ancillary piping was completed in the contract allotted time frame with minimal disturbance to the surrounding residences.

County Westchester, New York

Distribution System Modeling Water Main Installation, Water Main Cleaning and Cement Mortar Lining

County Water District 3 retained the services of CAMCE to evaluate their existing water system.

A hydraulic model was constructed using the Haestad software to model the existing water distribution system and to simulate the existing hydraulic conditions on campus. CAMCE prepared a report with recommendations and assisted the county in implementing the following evaluations:

The Booster Pump Station was constructed at the Hospital site to alleviate the low pressure problems experienced, and the existing Greenburgh Booster Pump Station was decommissioned.

Additionally, the Gates of Heaven Pump Station were upgraded.

In order to improve the carrying capacity of the pipe, the county undertook cleaning and cement mortar lining of water mains by removing the tuberculation caused by corrosion. In addition, to improve the distribution system capacity new water mains were installed.

Ardsley Country Club, Ardsley NY

Retention Basin Design

During the revitalization process of Ardsley Country Club, CAMCE provided engineering services to design the retention basins necessary to control the storm water run-off. CAMCE investigated the existing and proposed topography at each of the proposed retention basins in order to evaluate the storm water management requirements for the proposed modifications.

Stormwater analyses were performed using HydroCAD software to determine the times of concentration and peak rates for each storm frequency for both the existing and developed conditions at each location. The flows were routed through the ponds to the existing streams by designing the adequate control structures and culverts to drain the storm water volumes adequately while maintaining the peak rates of flow below defined thresholds.

Town of Lloyd, NY

Hudson Valley Acres Subdivision Storm-Water Control

Hudson Valley Acres is a proposed subdivision located in the Town of Lloyd. The site was previously utilized as an apple orchard and consists of 59.91 acres. CAMCE was retained by the developer to plan and design the subdivision of the lot and to assist the client in obtaining all the necessary approvals from the governmental agencies.

CAMCE subdivided the lot into individual parcels in accordance with the requirements of the Town of Lloyd code, and coordinated with the surveyor. CAMCES performed stormwater drainage calculations for the site and designed necessary appurtenances such as culverts, and drainage easements to drain the stormwater while controlling the peak rates of flow. Lastly, the micro-pool extended detention ponds were designed to aid the exiting pond to maintain/improve the quality and quantity of runoff from the pre-development condition.

Sleepy Hollow Country Club, Briarcliff Manor NY

Horse Riding Ring and Squash Court Building

The Sleepy Hollow Country Club (SHCC) is situated just east of Route 9, within the Village of Briarcliff Manor, Town of Ossining and partly in the Town of Mount Pleasant, New York. The dub consists of an 18-hole golf course, a 9-hole golf course, a practice fairway, tennis courts, a swimming pool, and other facilities.

CAMCE was hired by the SHCC to design a Grand Prix size outdoor ring with premium all weather fiber blend dust free footing, including the storm water runoff analysis for the site. The site was re-graded to blend in various access trails, the service road and the connective gravel path from the stable entrance. CAMCE provided a full scope of services for this project, from start to finish, to ensure highest quality end-project.

Looking to update its grounds, the SHCC decided to remove an existing one story building and construct a new LEED Gold Qualified squash court building complete with all the associated walkways, grading and landscaping. CAMCE was hired to perform site grading with the associated retaining walls; design an on-site sewer/septic system and other utilities; rehabilitate parking, walkways and paving; landscaping and lighting.

City of Paterson, New Jersey

Rehabilitation of Large Diameter Storm Drain, Access Manhole Chamber, and spillway structure

This project included the design and construction management for the rehabilitation of large diameter storm drains ranging from 36 to 116-inch diameters, access manhole chambers and spillway structures. The scope of work involved emergency repair to a section of 108-inch diameter storm drain that handles runoff flow from a large portion of the City. The spillway structure acts as a relief overflow chamber for the Molly Ann Brook during high flow periods. The storm drain and access manhole are part of the overall storm drainage system. The work has been performed in several stages, with the last stage currently under design. As part of the design and construction management, we specified numerous types of structural and rehabilitative products, special grouts, epoxy mortars and steel liners. Special pumping systems with the interceptor were required to divert flow in order for the contractor’s to perform the necessary repair work.

The City of Paterson requested that we complete an expeditious revised design to repair a portion (Section 2) of the Rossiter Avenue Storm Drain. This repair was completed for 200 linear feet of 106-inch to 116-inch diameter tunnel as an emergency due to the deteriorated condition for this portion of the tunnel. To restore the tunnel’s structural integrity a reinforced concrete liner was constructed within the tunnel. Construction services and resident inspection were provided.