The new facility was placed in to service on June 3, 2009. In the period from July 8, 2009 to September 9, 2009 the average analytical results of the new facility’s effluent were as follows:

Overall costs (Construction & Engineering) also turned out to be a major advantage. Construction for the new facility began in July, 2008. The costs are referenced in the following table.

The General contract was completed by Hickes Associates, Inc. of Alexandria, PA and the Electrical contract was completed by Robert P. Lepley of Lewistown, PA. Engineering costs for the project included design, permitting, and construction monitoring of the new facility. Unit costs for the design and construction of the new facility were approximately $4.88 per gallon of treatment capacity, including modification of the existing treatment units for aerobic digestion. A PennWorks Grant funded a majority of the project ($1,640,110), while the remaining funds were acquired through low interest loans at local financial institutions.

To review the full article of the Newville Borough Water & Sewer Authority, click here.

The existing Schrieber process facility was experiencing periodic organic overloading. The community’s collection system, comprised of approximately 1,000 individual grinder pumps, five central pumping stations and 15.4 miles of low pressure force mains, discharges an influent wastewater to the treatment facility that averages 250 mg/l of BOD and 240 mg/l TSS. The Authority decided that to meet corrective measures required by PA DEP, the existing Schrieber facility would be converted for aerobic sludge digestion and storage and a new facility that could meet the future organic and hydraulic capacity needs of the Authority and the Chesapeake Bay watershed nutrient loading limits proposed for existing wastewater treatment discharges as part of a single project.

The new facility consists of two continuous fill, SBR tanks, preceded by a fine screen to remove inorganic solids, and a Trojan UV 3000 disinfection unit. The SBR tanks receive raw influent continuously, while treated effluent is discharged to the UV unit for a maximum 60 minute period out of a 4.8 hour treatment cycle. A baffle wall, which isolates approximately 15% of the SBR tank volume, prevents short-circuiting of the influent wastewater by directing the influent flow to the base of the tank and spreading it across the entire width of the basin. This pre-react volume, which is aerated with the rest of the tank volume, also acts as a high F:M selector to control the growth of filamentous bacteria. As a safety feature of this process, there is no floating equipment within the SBR basins. All equipment is mounted to the tank walls and can be maintained without entering the basin. The tanks’ fine bubble diffusers are grid mounted to the basin floor, but unlike a true batch SBR system, the ICEAS process can operate using a single basin without process modifications or effluent degradation, allowing a basin to be drained for diffuser maintenance, if necessary.

To meet the Chesapeake Bay Strategy nutrient loading limits, the new facility is equipped with mechanical mixers, in-tank dissolved oxygen sensors, and VFD-controlled blowers so that aeration can be controlled by the dissolved oxygen concentration in the basins during the react period of the treatment cycle. This prevents over-aeration during aeration periods of the react cycle, allowing the dissolved oxygen to quickly crash during anoxic periods in the cycle. Alternating periods of oxic react and anoxic react generate nitrate and denitrify the nitrate created, respectively. Nitrogen gas produced by denitrification is stripped during a final aeration period prior to settling.

The new facility was seeded on October 2, 2007. Two weeks later, on October 16, 2007 the facility was operating normally and meeting all of its NPDES discharge limits as well as meeting the anticipated nutrient discharge limits. Analytical results of the new facility’s effluent after 14 days of operation were as follows:

CBOD – < 2 mg/l
TSS – 7 mg/l
NH3-N – 0.38 mg/l
Fecal Coliform – < 2/100 ml
Phosphorus – 0.7 mg/l
Total Nitrogen – 3.1 mg/l

Construction cost of the project was less than $ 5.25 per gallon of treatment capacity.

Jack A. Wilson
Anonymous Client

The projects have been within the engineering and construction budgets, with very few change orders.  Carlisle values William F. Hill & Assoc., Inc’s first hand operational experience and practical solutions.  Creative ideas and full participation by plant staff during the design phase have been the hallmark of Hill and Associates.”

Peter M. Selan
Treatment Plant Manager
Borough of Carlisle

As a small municipality we struggled with our engineering costs.  We have been with William F. Hill & Assoc., Inc. since 1996 and the Borough of Newville has been exceptionally well pleased with the services of Mr. Hill and his capable staff.  Time and again, the Hill firm has saved Newville Borough valuable tax dollars by getting the job done right!”

Fred A. Potzer
Borough Manager
Newville Water and Sewer Authority

Jim Lehman
Water and Wastewater Operator
York Springs Municipal Authority

Thank you, Wm. F. Hill and Associates.”

Thomas A. Ritter
President
Adams County National Bank

At the Reading Township Municipal Authority Wm. F. Hill, has seen to successful completion a number of projects. These capital improvements have included a sewage lift station upgrade, the design of a completely new 0.330 mgd, ABJ SBR treatment plant, and 0.200 mg aqua store sludge digester.

At the Lake Meade Municipal Authority I have had the pleasure of working with their engineers on the design of a potable water well installation, which included radon removal units as part of the treatment process.

Other projects that have been competently implemented by Wm. Hill & Assoc, for LMMA include the design and installation of two (2) 440,000 gallon aqua store potable water tanks.  Currently we are working closely with the engineering staff, on a 0.350 mgd AB SBR sewage treatment expansion which at this time
is approximately three fourths complete.  Along with this project William F. Hill and Assoc. is also administering the construction of a Gorman-Rupp sewage pumping station. <p>I have, in the past, had occasion to work with other engineering firms.  None of which in my opinion have proved to be as qualified as William F. Hill, & Assoc.

Some of the major reasons that William F. Hill continue to be my engineering firm of choice is their flexibility and willingness to work directly with me on design changes both prior to and during construction phases of all
projects.  One major example: the current sewer treatment plant project has required few change orders, some of which have actually decreased the cost of the project.  My main reason for continuing our relationship is that, although I depend on this firm for their design and engineering expertise, my opinions and suggestions are always welcome and considered, and often times implemented, making me a true partner in all projects as they are implemented.

In closing, I must say that by and large, I have always been highly satisfied with the engineering firm of William F. Hill & Assoc. for their flexibility, capability, and professionalism and highly recommend their services.

Bennett L. Leas
Supervising Plant Operator
Lake Meade Municipal Authority
Reading Township Municipal Authority