Manville Road and Red Hill Water System
Gate City, Virginia

Provided the survey and design of approximately 46,700 LF of waterline, a booster pumping station and 158,000 gallon water storage tank. Services also included easements, permits, O&M manual and resident project representation.

Water Filtration Plant
West Jefferson, North Carolina

The Town's water source that was used for over 50 years was classified by the State Department of Natural Resources to be under the influence of surface water and, therefore, would have to be abandoned. Mattern & Craig prepared an engineering report recommending using Micro filtration to treat the water. The filtration provides protection from Giardia and Cryptosporidium, and brings the Town's water supply system into compliance with current regulations. The system was highly automated. Only minimal daily visits are now required to check operations, eliminating the need for a full time operator at the treatment plant. The facility is designed with two membrane filtration units each capable of treating up to 75,000 gpd. The facility was also designed with chlorination for disinfection and phosphate for corrosion control.

The facility offers multiple advantages over conventional water filtration procedures, including reliable finished water quality regardless of raw water quality without chemical optimization, automated control system reducing labor, and long term compliance with regulations.

Mattern & Craig provided design and construction administration on the project. The facility is complete and fully operational.

The project was completed at a total cost of $460,000.

Route 11 North Sewer and Pump Stations
Rockingham County, Virginia

Survey (both aerial & ground surveys), preliminary alternatives design, & estimates. Prepared design plans & specifications for 20,000 LF of 8", 12", & 15” sewer; 22,000 LF of 6" & 8" force main; a stream crossing; a 660' directional bore crossing of I-81 for the 8" force main & a 670' directional bore crossing of I-81 for a 14" water line; 2 sewage flow measuring stations, 2 railroad crossing designs & 2 permits; & 1 stream crossing design & 1 permit. The documents were prepared in accordance with Rural Development standards. The work included submittals to VDOT for line approvals & for the I-81 crossing approvals. The work included submittals to VDH & Rural Development for approvals. The project included 2 slide rail submersible pump sewage pump stations with odor control, & 1 wet pit-dry pit sewage pump station. The pump stations were 350, 700, & 1,300 gpm capacity. Provisions were made for portable standby generators on 2 pump stations & an onsite generator for the 3rd station. The project was advertised in 2 phases, allowing contractors to bid on either or both phases. Construction stakeout was provided for both contracts. Construction administration, including shop drawing reviews & pay request reviews were provided for 2 construction contracts. The work included 3 property plats for pump stations, 83 easement plats for sewer & force mains, & 8 right of way plats.

Vista Park Well, Membrane Filter Water Treatment Plant, 
and Hollins Water Storage Tank
Botetourt County, Virginia

Subsurface investigation, including test borings, supervision, analysis, evaluation and report, two new wells, well testing, design of well, booster pumps, chlorine system, contact tank, 500,000 gallon water storage tank. Design of 150,000 gpd membrane filtration plant. Utilizes ground water which has been classified “under the influence of surface water” and incorporates microfiltration technology. The plant will become the main water source for the County’s Cloverdale Water System. Plant was designed for future expansion.

Amherst/Betsy Bell/Mary Gray 
Water System Study and Design 
Staunton, Virginia

Master Plan and Design of booster pump station, 200,000 gallon ground level water storage tank, and plan and profile for 11,850 feet of 10", 8" and 6" waterline. Work includes new pressure zone calculations and design, KYPipe model, geotechnical investigation, bidding and construction administration. Key element of project was keeping the existing water system in service while the replacement waterline was constructed.

New Wastewater Treatment Plant,
Interceptor and Pumping Facilities
Rocky Mount, Virginia

The project included preliminary study and design of a 2.0 MGD capacity facility including headworks building, grit collection, 3-channel oxidation ditch, secondary clarifiers, ultraviolet light disinfection, aerobic digesters, sludge belt press with lime feed system and control building; 4,000 LF of 30" interceptor sewer; pump station with three 550-2800 gpm pumps; financial assistance; environmental assessment; plans and specs, construction administration, construction stake-out survey, inspection and O&M Manual. Funding by EDA and VRLF.

The project also included an on-site pilot UV disinfection test monitoring flow, unit detention time and lamp intensity through a modular UV unit. Analysis for transmission, suspended solids and fecal coliforms were performed to fine tune the design.

The project was completed at a total cost of $9,320,000.