the consequences of a potential break in this aging infrastructure were alarming: a loss of service to approximately 26,000 residential and commercial customers and the risk of an illicit discharge of untreated wastewater into nearby waters. in response to this imminent threat, the city of omaha turned to snyder & associates for a solution, tasking them with designing improvements to the sanitary sewer and streambank.

hazard mitigation grant program (hmgp) funding

as the issue at hand was intricately linked to a disaster, it rendered the project eligible for the hazard mitigation grant program (hmgp). this presented a crucial lifeline and chance to address the immediate problem and proactively engage in hazard mitigation.

with a firm commitment to fortifying our community against future challenges, we thoroughly completed the federal emergency management agency (fema) funding application. beyond that crucial step, our involvement extended to essential assistance in securing funding and administering the grant throughout the project. this dual role, from application to grant administration, underscores our dedication to recovery and building a more resilient foundation for the future.

digital terrain and aerial imagery from drone flyover of the project.

stream corridor survey & comprehensive assessment

the project began with a comprehensive assessment of existing conditions and elevations using snyder-operated drone technology. this invaluable tool allowed the team to survey the stream corridor efficiently, providing essential data for the subsequent design phase.

recognizing the need to realign the upstream gravity sewer and siphon crossing away from the eroded stream bank, concepts were developed based on the information our experts gathered.

the stream bank in the affected area presented a challenging opportunity, characterized by excessively steep 1:1 slopes with nearly 40 feet of vertical drop in some places. to safeguard against future scouring and channel degradation, the design incorporated rock check dams and bank stabilization practices upstream and downstream of the sewer crossing. however, the project’s core lay in redesigning the siphon system.

redesigning the siphon system

the siphon design featured three barrels for flow conveyance: a primary pipe for dry weather, a secondary pipe for elevated expected daily flows, and a tertiary pipe for peak flow activity associated with rainfall. an additional complication arose from limited elevation differences between the upstream and downstream connecting sewers. to address this, snyder & associates utilized hydraulic modeling software to iterate through various pipe sizes and head conditions, ensuring optimal velocities through the system.

we also considered the potential odors commonly associated with such facilities, knowing future development is planned in the vicinity. the chosen solution comprised one 10-inch and two 16-inch hdpe ductile iron pipes, carefully selected through a detailed design process. this ensured the pipes’ thickness could withstand external forces and pull stresses during installation, providing a robust and lasting solution.

the new pipe was also designed to be 10 feet below the existing channel bottom. this decision reflects a proactive approach to address potential future challenges, specifically erosion. by incorporating this design element, the project focuses on immediate needs and strategically anticipates and mitigates potential risks. this forward-thinking measure serves as a preventive step to ensure the longevity and stability of the infrastructure, demonstrating a commitment to long-term resilience and sustainability.

environmental assessment & stream rehabilitation

due to the substantial impact on the streambank anticipated with this project, fema mandated the completion of an environmental assessment. our environmental team collaborated closely with project stakeholders to develop a comprehensive plan comprising three stream restoration sections. this plan incorporated the strategic placement of rock riffles just before the newly buried pipe location and hard armor erosion control measures along the streambanks.

these riffles and added streambank support mitigated construction impacts and served as proactive defenses against potential erosion, addressing environmental concerns thoughtfully and proactively.

building resilience through innovative technologies & strategic design solutions

the collaboration between the city of omaha and snyder & associates is a testament to the importance of proactive infrastructure management. by leveraging innovative technologies, such as drone surveys and hydraulic modeling, and implementing strategic design solutions, the project successfully protected critical infrastructure, ensuring the continued provision of sanitary services to thousands of residents and businesses. this project strengthens the city’s resilience in the face of environmental challenges and serves as a model for other municipalities grappling with aging infrastructure and evolving climatic conditions.

the post safeguarding critical infrastructure and water resources: omaha’s “papio” creek first appeared on 华体会英超赞助商 - engineers and planners.

as a potential solution, the des moines county regional solid waste commission (swc) proposed a solution for the permanent leachate disposal at the west burlington sewer system. viewed as an option to lower taxpayer costs within the city of west burlington, both parties consented to the agreement, and plans for the project were launched.

managing dual client representation for leachate disposal solution

the snyder & associates team was hired to represent the city’s and the landfill’s needs throughout this project. when providing services for multiple parties, clear agreements and constant communication are vital to satisfactorily satisfy all needs. since the city leaders agreed to construct the project for the landfill, we helped both clients navigate the process to enter a chapter 28e agreement under the iowa code. this agreement allows cities to contract with other governmental units—in this case, the county landfill.

additionally, to ensure the partnership was protected in the future, we prepared a substantial industrial use agreement between our clients for monitoring and reporting the characteristics of the leachate. per this agreement, the landfill cannot exceed an average of 58,000 gallons of leachate disposal per day and has a maximum limit of 80 gallons per minute. the industrial use agreement also outlines specific parameters for contaminants such as cadmium, copper, lead, nickel, silver, btex, and benzene to ensure nothing harmful is conveyed to the west burlington treatment plant.

leachate conveyance route options & project construction

with agreements in place, our team began preparing preliminary studies for various pumping alternatives and piping routes to establish the most economical yet agreeable solution for the conveyance needs. alignment a offered a shorter route with fewer grade transitions but would require multiple permits to construct a utility within the state highway right-of-way. alignment b featured a longer route but avoided private property and easement acquisitions. despite the higher upfront construction cost, alignment b resulted in the cheaper option in the long run. the group unanimously selected alignment b, and the final designs were moved forward.

the force main will connect the landfill to west burlington’s wastewater distribution system for leachate disposal.

for this project, we started by constructing the lift station at the landfill. the station’s location was pre-determined as the site had a previously placed utility hole that allowed pumping and the necessary access to power. this lift station was constructed as a submerged wet well lift station typical for transmitting wastewater flows.

our team then transitioned the construction phase to installing piping sections, adding over 12,000 linear feet of 4-inch diameter, high-density polyethylene (hdpe) piping. this material was selected because it can be installed in longer sections than pvc. since the project pathway runs through the 世界杯足球比赛预选赛 right-of-way, most of the construction could be done via open-cut installation. however, the pipe intersects an active railroad at one location, and trenchless installation was applied to limit disruptions.

in a client request, we added pipe access cleanouts every 500 feet along the segments. while this is typically unorthodox for force main because of the pressure pipe, access was needed along this long expanse of pipe for special cleaning due to the nature of the waste.

this mutually beneficial waste management project reduced landfill expenses, and the lower costs ultimately trickle back to the taxpayers. the snyder & associates team was proud to bring the city and the county’s needs to the contractor to facilitate the construction of a project that minimized environmental impacts, avoided wastewater treatment plant operation interruptions, and mitigated the disturbance to nearby neighborhoods.

the post leachate disposal solution for des moines county landfill & the city of west burlington first appeared on 华体会英超赞助商 - engineers and planners.

the communities’ main concern was the unpredictable ammonia content, which would see spikes during warm spring days. as long-standing clients, city leaders contacted the wastewater experts at snyder & associates to update their wastewater treatment facility and help mitigate the pollutant issues.

emerging “green” technology for wastewater treatment

our team commonly deals with ammonia in wastewater and can create customized treatment options to obtain compliance. knowing that the city’s goal was to lower ammonia and nitrate levels, we recommended a sequencing batch reactor (sbr) mechanical treatment plant. this system would solve their regulatory issues without expanding the current footprint of the lagoon facility. the sbr is also easily expandable to accommodate anticipated community growth.

the idea was broached during 2022世界杯32强预选赛 discussions for a relatively uncommon, reduced-energy treatment technology. the city was impressed by the potential cost-savings of this new technology. it was willing to take a small risk to implement the greener, less energy-intensive treatment system.

the system uses vertical conveyor belts that grow algae on their surface. as the algae grow, it consumes nitrogen and phosphorus from the wastewater.

this new system is based on gross-wen technologies’ (gwt) patented wastewater treatment technology, a revolving algal biofilm (rab™) system. this technology, developed at iowa state university, works in conjunction with lagoon systems when additional biochemical oxygen demand (bod), ammonia (nh3), total nitrogen (tn), and/or total phosphorus (tp) removals are needed. the rab™ can be used with the city’s existing lagoon treatment system to provide supplemental treatment and reduce the loadings on the lagoon system. this method will lower energy requirements by allowing the city to turn off blowers and substantially minimize electrical usage. to better assist our clients, our experts quickly ramped up their knowledge of the rab™ system to ensure this new technology fits the city of slater’s needs.

ultimately, this system promotes algae growth, which consumes and removes nitrogen and phosphorus nutrients. to achieve this, large grit particles are removed as wastewater enters the treatment facility, and the wastewater flows sequentially through multiple rab™ cells. after being treated by the algae in the greenhouse, the water progresses through two aerated and one quiescent lagoon. the final step in the process is uv disinfection before being discharged into local waterways.

while this system requires more overall space for the complete treatment process, the benefits are eco-friendlier and reduce energy. additionally, the algae produced by the system is harvested as a consumable material and can be used as inputs for value-added products, including fertilizer and animal feed.

unique design meets space restrictions & wastewater treatment needs

the large lagoon cell was drained to allow space for the greenhouse in the current facility footprint.

since the footprint of the current treatment facility had space limitations, our team had to get creative to provide enough room for the nearly 350′ x 50′ greenhouse containing three concrete cells and 30 rab™ belts. one of the large existing lagoons was drained to accomplish this, and almost one-fourth of the area was filled with soil. this arrangement allowed enough lagoon area for adequate treatment while also providing a location that would work for the greenhouse and rab™ equipment.

challenges also arose during the design phase with the necessary grit removal processes. for the rab™ equipment to work correctly, all grit must be removed before entering the treatment system to ensure longer lifespans of the rotating equipment. our initial plan was to provide a preliminary treatment process via a mechanical screen and mechanically induced vortex grit removal equipment. however, that required a higher cost than the city found acceptable. with that in mind, our team adjusted the plans by creating a new 200′ x 50′ settling basin that would be located adjacent to the new greenhouse.

greener future for the wastewater treatment market

construction on the upgraded facility began in the spring of 2021 and wrapped up in early 2023. with the completion of the system, the city of slater has become the pioneer in the state of iowa to employ this revolutionary technology. during the treatment facility’s grand opening on june 9, 2023, governor kim reynolds remarked on how excited she was by this new process and technology applicable to many other small rural communities. our wastewater experts were proud to collaborate with forward-thinking community leaders and local companies to create a greener, more productive future for the wastewater industry.

the post slater incorporates algae to treat community wastewater first appeared on 华体会英超赞助商 - engineers and planners.

community growth is a good thing, especially in suburban areas. however, successful and sustainable growth doesn’t happen on its own — it requires meticulous 2022世界杯32强预选赛 and strategic thinking. in 2010, the city of pleasant hill was in the midst of a rapid population expansion, experiencing a twelve percent increase in just nine years. if not adequately addressed, growth on this scale can put a strain on existing infrastructure, economic practices, and environmental processes.

as the city engineers for pleasant hill, the municipality tasked snyder & associates with conducting a sanitary sewer system review and engineering report. the city-wide examination aimed to identify long-term system and infrastructure upgrades required to support the community’s continued growth. after experiencing excessive stormwater flows and wastewater leeching into a nearby creek, the city requested the study also include a partial infiltration & inflow (i/i) assessment.

creating a viable & adaptable infrastructure plan

in an effort to guarantee the usefulness of the information gathered by the sewer study even further, our team intentionally structured the plan to avoid forecasting future development. instead, all improvements outlined in the plan were presented so they corresponded to acres of development instead of a specific timeline. therefore, if development moves faster than expected (or gets put on hold) the infrastructure plan remains viable. this strategy ensures the community can expand at its own pace and maintain growth long into the future without fear of overtaxing their system.

diverse 2022世界杯32强预选赛 tool capable of serving multiple communities

this 2022世界杯32强预选赛 document’s value was proven when pleasant hill’s neighboring community, altoona, sought collaboration to address a portion of their sanitary sewer. altoona’s service area covers a section that naturally drains towards pleasant hill. serving this area with sanitary sewer would have required multiple pump stations to convey the flows back to altoona’s wastewater facility. through our 2022世界杯32强预选赛 efforts, an alternative means of service was identified in the form of a gravity sewer conveyance to pleasant hill’s wastewater collection system.

utilizing the sanitary sewer system review and the foundation it provided, our team analyzed and evaluated the impacts this alternative posed on the pleasant hill system and the capacity enhancements that would be necessary to accommodate altoona’s wastewater dilemma. our evaluation highlighted improvements the added load would require and aided in compensation negotiations between the two municipalities.

targeting specific areas for sanitary sewer improvements

one of this project’s primary focus areas consisted of the east side sanitary sewer main extension which serves a large portion of the spring creek watershed. in this area, the city saw the potential to serve up to an additional 16 square miles in the future, nearly three times the city’s current size.

while this expansion potential was impressive, it also brought the uncertainty of potentially overloading portions of the city’s wastewater collection system. the at-risk areas our team focused on included the northeast 80^th street lift station, the southeast 6^th avenue lift station, as well as several, aged sewer systems located downstream from sewer extensions and their expanded service areas. to find deficiencies that may hinder the current system from withstanding the anticipated increase in demand, our team used the city’s gis database to calculate sewer capacities. they were then able to estimate sewer flows based on overall land use.

numerous improvement options provided to meet demand

manholes such as this one with extensive corrosion cause leakage into sewer systems.

to avoid future infrastructure issues, our team put forward multiple modifications and upgrades for consideration. some of these adjustments included:

• upgrading current 4″ force main pipes to 12″ and 16″ force mains at each lift station
• incorporating new wetwell/drywells and vertical screening system at each lift station
• reconstructing several critical sewer sections with larger pipes to increase capacity
• rehabilitating defective manholes and covers

the post growth in pleasant hill leads to sanitary sewer system review first appeared on 华体会英超赞助商 - engineers and planners.

as community leaders in mature communities know, the need for new and more efficient wastewater systems is a universal concern. this issue was an unwelcome reality for many anamosa residents near the 2nd street lift station. frequent sewage backups into homeowner’s basements had resulted in numerous insurance claim filings and additional expenses to the city. anamosa city leaders turned to the professionals with snyder & associates to tackle this concerning and costly problem.

as the designers of the city’s new wastewater treatment facility, our team was intimately familiar with the current municipal systems in anamosa. after preparing upgraded facility plans and offering solutions to upgrade the aging infrastructure, our experts collaborated with city staff to determine the most cost-effective and sustainable solution.

upgrades increase lift station & force main capacity while improving efficiency & safety

the preferred option involved upgrading the existing wastewater lift station and portions of the adjoining sanitary sewer collection system. lift stations are pumping stations used to move wastewater from a lower elevation to a higher elevation and eventually to a treatment facility.

a new, precast structure was constructed to house the lift station apparatus. the facility’s capacity was increased from 800,000 gallons per day to over 2.4 million gallons per day. to meet current iowa department of natural resources (dnr) water quality design standards, the new station is equipped with a three-pump system, where one serves as a backup. each of the three pumps is controlled by variable frequency drives, providing the pumps the capability to handle a wide range of pumping needs, ensuring operational efficiency. the plan also doubled the size of the force main piping, which extends over ½ mile along 2^nd street to the west of the lift station.

vertical wastewater filtration prevents clogging & potential damage

the above-ground section of the vertical screen. the pink bag collects debris that flows towards the station.

to address the problem of unnatural items clogging the system — a point of discontent for city leaders and staff in the past — a vertical screen was installed within the pipes leading towards the upgraded station. a vertical screen system accumulates and eliminates much of the debris before it enters the lift station, a proactive measure that will extend the treatment system’s longevity. additionally, the screen is self-serviced by clearing blockages through a rotation system, eliminating the unsafe task of maintenance personnel climbing into the unsanitary wells to remove blockages.

trenchless installation provides minimal disturbance

installing new sewer pipes and infrastructure in established residential areas is often a high-impact process that necessitates removing sidewalks, roadways, and driveways. for this project, however, trenchless construction technology was employed.

while it requires specialized equipment, trenchless technology has become increasingly popular in the engineering industry as it provides an environmentally and financially sound alternative to traditional excavation techniques. this non-invasive method produces less damage than open-cut techniques, using only a few entry and exit holes to push or pull the new sewer line into place. most of the new sewer was installed through this method, reducing daily traffic disruptions and eliminating the disturbance of existing underground utilities.

snyder & associates provided all construction administration and observation services for this project. our team also relayed the city’s needs to the contractor to facilitate a seamless construction process that minimized environmental impacts, continued wastewater treatment plant operations, and mitigated residential disturbance. with these upgrades in place, the anamosa sanitary system will be able to manage expected community growth well into the future.

the post lift station upgrades eliminate backups & increase efficiencies: anamosa first appeared on 华体会英超赞助商 - engineers and planners.

when it comes to learning, the environment is everything. for the students at starmont high school, that environment includes a lot of cornfields. located in rural iowa, nearly five miles from the nearest community, starmont high school is between strawberry point, arlington, and lamont. it serves high school-aged students from all three communities.

starmont high school is surrounded by cornfields, with its only neighbor being the dairy farm across the road.

constructed in the late ’70s, a dairy farm directly across the road provided the school’s wastewater services. the dairy farm maintained its operational wastewater lagoon systems for its industrial waste. this arrangement worked well for nearly 43 years until the dairy farm experienced financial hardship, leading to the plant’s imminent closure.

with less than a year to act before their wastewater services were cut off, the high school needed options, and they needed them fast. thanks to past client relationships and positive word-of-mouth recommendations, the team from snyder & associates was brought on board to find a viable wastewater solution for the high school.

potential wastewater treatment options considered

during the initial design phase, our team considered and reviewed various wastewater disposal and treatment options. it was vital for the school’s long-term sustainability to find a solution that could fit within the school’s budget and be completed within the given time restriction.

using trucks to haul the waste to a nearby treatment facility physically was briefly considered a temporary option if necessary. ultimately, the goal was to avoid this situation since costs could quickly accumulate under this scenario. next, our team looked into building force mains to pump wastewater to the closest municipal wastewater facility. the extensive and widespread construction and the numerous easements a project of this scope would require meant this option wasn’t feasible either.

instead of moving the waste, our team began to review on-site alternatives. as the smallest option, a mechanical plant was considered but was eventually ruled out due to the excessive electricity demands it would require and the necessary operator training.

controlling their own fate and wastewater treatment

during our team’s discussions with the starmont superintendent, it was clear he didn’t want to make the same mistake and place the school in a position where they were once again dependent on another organization for their wastewater treatment. at the recommendation of the snyder & associates team, the school board decided to take control of their future and build their own controlled discharge lagoon system.

“if you are a small enough system and have the room, a lagoon system is the best option. it self-disinfects, self-treats, and doesn’t require any power,” states lindsay beaman, pe, business unit leader of snyder & associates’ cedar rapids office.

with the land already available as part of a future farmers of america (ffa) training field, design and construction for the lagoon system began immediately. in short order, three large pits for the lagoons were excavated, and a lift station was assembled for pumping wastewater between lagoons. with this simple solution, the school has ensured its wastewater needs will be met for decades.

comprehensive services provide a quick solution

thanks to the cooperation and quick action from the iowa department of natural resources (dnr) and the project’s contractor, all permitting and construction were completed before the loss of wastewater services from the dairy farm.

“accomplishing as much as we did, as quickly as we did, was a major feat,” explains beaman. “a project similar to this typically takes anywhere from four to five years, and we got it up and running just a year and one month from first being contacted.”

the post starmont high school’s wastewater dilemma requires speedy solution first appeared on 华体会英超赞助商 - engineers and planners.

as the waste stream generated by modern society grows larger and more complex, preserving 世界杯足球比赛预选赛 health and the natural environment requires thoughtful improvements in wastewater engineering and treatment processes. located in southeast iowa, the city of west burlington required just that remedy when their wastewater facility was notified their current treatment methods didn’t meet the state’s updated water quality standards.

significant facility upgrades were necessary to meet national pollution discharge elimination system (npdes) compliance regulations about treating ammonia-nitrogen, e. coli, and dissolved oxygen limits. to spearhead this effort, the wastewater professionals with snyder & associates provided complete wastewater facility 2022世界杯32强预选赛 and design services and administered all aspects of construction management.

extensive facility improvements lead to npdes compliance

the original city-owned treatment facility included a gravity sewer main, lift stations, and a combination of an activated sludge wastewater treatment plant and a three-cell aerated lagoon. while this facility configuration effectively treated the community’s wastewater for many years, this process didn’t account for increased capacity and stringent regulation updates.

one of several aeration chambers is included in an aero-mod system, where the air is cycling on and off before entering a clarifier.

the project included the construction of a new headworks building with grit removal and screening, a process the old facility didn’t previously contain. an ultraviolet (uv) disinfection system was included to treat e. coli concerns. using the latest in aero-mod, inc. technology and controls, the physical upgrades provided more efficient aeration equipment, blowers, and nutrient removal. the construction of a cast-in-place tank consisting of four aeration basins, four clarifiers, and two selector tanks significantly increased the plant’s total capacity.

two of the existing aerated lagoon cells were converted to equalization basins to minimize the sizing of the mechanical treatment equipment, while the other became a stabilized sludge storage space. this transition made the plant 100 percent treated by activated sludge. the activated sludge process uses many organisms to aerobically treat wastewater and remove biodegradable organics from municipal and industrial wastewater. this process was determined to be the best fit for west burlington as it resolved the ammonia-nitrogen and nutrient complications.

improvements also included new controls and electrical upgrades, rerouting subsurface piping, and installing a standby generator. our team created a design that kept all the upgrades confined to the existing wastewater treatment plant property.

thoughtful modifications & efficient 2022世界杯32强预选赛 reduces project budget

with input from city staff and leaders, snyder & associates designed this treatment facility with an eye toward future growth in the city and the potential for increased nutrient reduction requirements. our team’s foresight to plan for both eventualities saved the city countless hours of 2022世界杯32强预选赛 and construction.

additionally, utilizing much of the existing wastewater system and simply modifying it to meet the new regulations minimized the required upgrades, creating lower overall project costs. once crews completed construction, the project’s total cost was nearly $1 million under the proposed budget. the snyder & associates team is proud to provide efficient designs that keep communities compliant with ever-changing regulations and within the means of an ever-tighter city budget.

the post west burlington’s wastewater treatment plant upgraded to meet current npdes requirements first appeared on 华体会英超赞助商 - engineers and planners.

when the city of des moines wastewater system was initially constructed, viable methods for separately conveying the city’s stormwater and wastewater didn’t exist — it all flowed through the same pipes. this singular system would often reach capacity during heavy rainstorms or rapid snowmelt, causing sewer backups into businesses, homes, and onto city streets.

in previous attempts to combat this issue, multiple overflow structures were introduced across the city to divert surplus flows and reduce flooding. these high-flow relief outlets, called combined sewer overflows (csos), handle stormwater along with untreated human and industrial waste, toxic materials, and street debris. the des moines metro initially contained a total of 26 of these systems which directly discharge the untreated waste into local rivers, streams, and other water bodies during high-intensity rainfalls.

during the 1990s, the environmental protection agency (epa) began requiring communities nationwide to separate stormwater and wastewater systems under the clean water act (cwa) to minimize the water pollution concerns associated with csos. des moines city leaders actively worked to meet these requirements. a key component of their success was spelled out in the city’s long term control plan (ltcp) which aimed to upgrade des moines’ aging sewer systems and limit untreated sewage discharge by 2023, as mandated by the federal cwa.

improvements in stormwater collection & conveyance leads sewer separation efforts

the near west side sewer separation is one of the dozens of projects identified in the city’s ltcp. located west of downtown des moines near ingersoll avenue, woodland cemetery neighborhood, and carpenter avenue, this area encompasses approximately 645 acres and a substantial piece of the overall required sewer work.

initially, the city contracted snyder & associates to conduct a study of the impacted locations. using technology such as gps, cctv, and smoke testing, our team was able to verify system connectivity and identify combined sewer connections, including some which were previously unknown in the system. the collected data was then compiled in a gis database and used for system connectivity analysis, conceptual 2022世界杯32强预选赛 , and as a baseline for hydraulic model analysis. the study concluded with a conceptual design proposal for separating the combined sewers.

the snyder & associates team stayed on board to complete the project design and assist with construction services. this primarily included the removal of stormwater inlets from the combined sewer system and the construction of approximately 25,500 feet of new storm sewer pipes in various locations within the region. to reduce land disturbance and total cost, it was determined that the existing combined sewer system could be left in place to continue collecting and conveying community wastewater with minimal exceptions.

multi-phase sewer separation project allows for individualized section focus

to accommodate reasonable concerns regarding environmental permitting and the construction schedule, the near west side sewer separation project was split into four phases. for each phase, the snyder & associates professionals provided the design for sewer separation, construction documents, subsurface utility investigation, and 世界杯足球比赛预选赛 engagement services for different project path sections. for the majority of the project, our team also assisted the city with construction services, including observation, staking, and administration.

phase one – trenchless construction & property owner communication

the first phase of the project took place along an extremely narrow side street and the busy ingersoll avenue corridor. spanning only 29-feet wide, this tight project area made an open-trench installation for the proposed storm sewer untenable. to remedy this, our team implemented a trenchless construction method using bore and jack tunneling to minimize any significant disturbances or impacts.

additionally, a large portion of the phase one storm sewer route passed through private property. this required consistent communication with area property owners to fully address any concerns and diligent work with legal authorities to obtain all necessary easements.

phase two – stormwater extension ceases localized flooding 

consisting primarily of residential sections within the woodland heights neighborhood, a vast portion of the phase two construction zone had limited access via one street outlet. elaborate construction staging and traffic control measures were necessary to ensure the least amount of disturbance possible while also maintaining access for residents. during construction, significant unavoidable conflicts were encountered, including the discovery of abandoned utilities and streetcar tracks below pavement overlays, as well as poor pavement materials. these challenges were swiftly and successfully addressed by our team. when delays occurred from utility relocations, modifications to the staging and traffic control plan were quickly implemented, allowing construction to continue unimpeded.

phase two also included an area where a minor storm sewer extension was identified as a critical necessity to increase the area’s stormwater conveyance capacity. this upgrade was completed just before a significant rainstorm and received high praise from area homeowners. for many, it was the first time in their residency that localized flooding did not occur during heavy rainfall.

phase three – efficiencies achieved by combining sewer & streetscape projects

phase three followed a multi-lane road that was undergoing conceptual 2022世界杯32强预选赛 for improvements and also intersected the drake university campus. as a cost-saving measure, snyder & associates coordinated with the city, university staff, streetscape designers, and three adjacent developments to incorporate portions of the storm sewer modifications into the current construction efforts. by recognizing this opportunity, both the sewer separation and street improvements were able to be completed successfully and efficiently.

phase four – pump station diverts sanitary flow off combined sewer

special permitting had to be obtained when designing phase 4 work as it cut through the historic woodland cemetery.

due to be completed in 2021, this final phase calls for a pump station that will necessitate significantly less storm sewer construction by diverting the sanitary flow off of the combined sewer. the new pump station will be constructed in a residential neighborhood. our team considered the community dynamics and building aesthetics, as well as the structure’s underground footprint.

the plans for the final phase of sewer separation were initially mapped along the edge of a large, historic cemetery. after review, the snyder & associates team determined that significantly reduced costs and harm to area infrastructure could be managed by moving the construction along an existing roadway inside the cemetery. our professionals successfully led the extensive coordination with the iowa dnr and historic preservation offices to develop a plan for controlled excavation within the cemetery including preparations for handling any grave shaft discoveries. with all regulatory requirements cleared and permits obtained, construction is scheduled to begin in the spring of 2021.

innovating through value-added improvements 

although the primary project goal was to separate stormwater and wastewater flows, our team continuously pursued opportunities to improve the current systems with cost-effective options. during the design process, we identified several areas where minor upgrades would improve the system’s overall capacity and performance. these value-added improvements were seamlessly incorporated into the project.

eco-friendly installations improve water quality

early in the design process, our forward-thinking team recognized areas where the incorporation of green infrastructure would drastically enhance project improvements. during phase two, our team incorporated permeable paver parking lanes along a major roadway. situated on top of storage aggregate, this is an effective stormwater management method.

similarly, in phase four, high-flow media biofilters were incorporated along the roadway. the aesthetic of the landscaped biofilters matches the character of the neighborhood and adds a green focal point and natural vegetation. these eco-friendly installations help reduce flows reaching the storm system and improve the quality of the water that is eventually discharged into local rivers and streams.

cooperative partnerships create efficient projects

our professional designers and engineers always strive to be as efficient as possible. for this project, that meant working in conjunction with other city projects and in cooperation with adjacent construction. our efforts also included using the city’s street and sidewalk improvement plan to identify areas where additional street replacement and intersection ramps could be added to save on planned capital and streetscape improvements in the future.

both the green infrastructure and cooperative involvement efforts led to the successful elimination of cso’s and an overall decrease in flooding events across the city. at one time, the city of des moines sewer system was experiencing twenty or more wastewater overflows a year into local water systems. thanks to a multi-faceted, collaborative strategy, the majority of those occurrences have been eliminated. moving forward, snyder & associates will continue to work alongside the city of des moines through the remaining project phase and assist the city in determining the best course of action for future projects.

the post des moines’ sewer separation initiative prevents flooding, backups & overflows first appeared on 华体会英超赞助商 - engineers and planners.

during the production process, many industrial manufacturers create wastewater that requires treatment before discharge. because of the extensive range of possible pollutants, stringent regulations that vary by location, and the cost impacts associated with different treatment strategies, there is no “one size fits all” solution to properly treat this wastewater. with those constraints in mind, snyder & associates has provided ongoing engineering assistance to a large, western iowa food production facility for more than ten years. as they continue to grow and adapt to a changing business climate, our team has been there to help guide them on their road to success.

specialized needs require creative water treatment solutions

this food production facility operates a wastewater treatment system with an organic loading equivalent to a population of approximately 100,000 people. industrial food production wastewater components are often difficult to predict due to the differences in biochemical oxygen demand (bod), phosphorous, nitrogen, and chloride levels, and ph in effluents from vegetable, fruit, and meat products. since our client falls into this category, high-strength wastewater is produced and requires specialized treatment solutions to efficiently treat all effluent streams.

inside of the sbr tank looking at the submersible pumps and piping system prior to startup of treatment operations.

our team initially began working with the client to meet these treatment demands. the wastewater experts with snyder & associates custom-designed a high-technology wastewater treatment system, including anaerobic lagoons followed by a sequencing batch reactor (sbr) treatment system. individually, each of these processes can be effective in typical wastewater treatment. however, when placed in a sequence they can aggressively treat highly-concentrated effluent. using an innovative method, this system was designed to fit into existing, repurposed concrete tanks. this not only saved the client money, but it also challenged our team to devise a complete system to match the confined space and maximize the area’s potential.

in the intervening years after this system was implemented, the company has continued to grow while regulations concerning wastewater have become increasingly stringent. due to these circumstances, the facility continually requires numerous new and updated treatment processes. after performing a continuing needs assessment, our design experts created a system to expand capacity and meet the updated regulations. unlike the previous system, this update was augmented with flow equalization to help minimize flow variations. it was also equipped to utilize chemical aids for improved settling when required.

conscious decisions in industrial funding and permitting

while our central focus for this client is predominantly wastewater collection and treatment, our experts know other aspects lead to a facility’s growth and success, including funding and permitting. working with state regulators, the environmental protection agency (epa), and others, we helped this client achieve compliance with newly-adopted requirements and work through extensive permitting processes. we were also able to identify creative means of compliance when onsite upgrades proved cost-prohibitive. we understand that stringent treatment regulations are placed on industrial facilities, coupled with a lack of available financial assistance. because of this, our team is well-positioned to recommend only what is necessary for a facility to run efficiently while still meeting the required permit limits.

permitting is essential for all project types but is particularly critical in the industrial services industry. for this client, our environmental experts have conducted multiple studies and compiled documents for the national pollutant discharge elimination system (npdes), spill prevention, control, and countermeasures plans (spcc), and title v air permitting.

snyder & associates conducting dye testing in the local waterways as part of the pollution prevention plan.

npdes permits were created to prevent the spread of pollution through stormwater and wastewater by specifying monitoring and reporting requirements along with the limits a facility can discharge to assure that the effluent does not diminish local water quality. to assist this client in achieving this regulatory compliance, our team creates a nutrient reduction strategy and coordinates permit monitoring, corrective actions, inspections, and any necessary reporting documents. additionally, this facility is required to have an spcc plan in place due to its storage capacity and a reasonable expectation of a potential discharge into local waterways. our professionals update this plan every five years so that it remains an active document for the facilities management team.

title v of the clean air act (caa) requires any operation verified as a ‘major source’ of air pollutants to obtain and operate in compliance with a title v operating permit. our team obtains the necessary permits for this client by analyzing emission points and their respective units, calculating contributing impurities being released to ensure they fall under required limits, and combining our findings into a detailed permitting package. while the caa is a federal program, title v permitting is typically administered by the states. snyder & associates has direct, consistent contact with regulatory agencies, ensuring we are staying on top of permitting trends and requirements.

continuing quality work with industrial clients

2022世界杯32强赛程表时间 to deliver customized industrial wastewater treatment designs for our clients. we have the ability to integrate multiple components and disciplines to develop an individualized solution that fits our clients’ requirements. whether traditionally or creatively, snyder & associates works hard to provide cost-effective solutions for wastewater treatment and discharge, enabling our industrial clients to manage costs, increase production, and stay competitive in their ever-changing market.

the post custom wastewater treatment solutions for growing industrial client first appeared on 华体会英超赞助商 - engineers and planners.

new downstream location leads to expanded sanitary sewer services

the easton road pump station was constructed in 1979 and could no longer meet the demands being placed on it. the city of st. joseph selected snyder & associates to replace this outdated and undersized structure with a newly designed wastewater facility in an enhanced location. positioned 1.5 miles east of its predecessor, the new candy creek pump station opens up nearly 3,600 acres of an additional service area, which can be used for future community growth.

map of sub-basins serviced by the new candy creek pump station

our engineers and city staff strategically identified the new pump station’s site for its ability to serve the current drainage basin while expanding service to additional drainage basins in the region. to incorporate these areas, approximately 13,000 lineal feet of gravity sanitary interceptor sewer was designed and constructed, routing sewage from the added basins to the new pump station site.

connecting this updated system to the city’s current sewer infrastructure required approximately 13,500 linear feet of force main to be placed. this pipeline, which conveys wastewater under pressure, was designed to cross an abandoned railroad route, county right-of-way, and an agri-business site before discharging into the community’s gravity collection system.

we understand the financial challenges that our clients face and work diligently to maximize the overall wastewater project value while minimizing design and construction costs. by determining the most direct path for the pipe and optimizing pump station design, snyder & associates was able to cut overall project costs.

multi-story design increases pump station capacity and efficiency

2022世界杯32强赛程表时间 applies objectivity and specialized knowledge to every project while also listening to our client’s preferences and making those a reality. this combination of skills led to the complete design for the candy creek pump station.

view of effluent pumps located on the lowest level of the pump station

built as three levels extending approximately 30-feet below ground, the layout features ample space for a separate pump, motor, electrical, and generator rooms. constructing the facility at multiple levels allows for easy access to the new gravity sewer as it conveys incoming effluent to the system.

as preferred by the city, this station is a wet well facility with dry vertical eddy current drive centrifugal pumps. incorporating a dry pump room into the system increases overall safety and eliminates classified or hazardous spaces per the national fire protection association (nfpa) criteria. by creating the station in this manner, our designers allowed convenience for maintenance personnel and increased accessibility and safety for on-site operators.

facility design easily integrated into future plans

throughout 2022世界杯32强预选赛 stages, the city indicated that a wastewater treatment plant expansion to the candy creek structure was plausible at a future date. to accompany those plans, our team intentionally devised a pump station design that allows for the treatment facility to be seamlessly added to the current structure. preliminarily plans were prepared for pipe re-routing and facility layout and even went as far as including the upstream headworks systems. additional preparations were made accounting for future flow equalization pumps and a 1 million gallon equalization basin, which would serve as mitigation factors for wet weather flow peaks at the site.

at snyder & associates, we provide our clients with proactive, responsive, and cost-effective services. throughout this process, we worked diligently to incorporate improvements that will enhance and accommodate the city’s growing population throughout the years to come.

the post new pump station expands st. joseph’s eastside sewer system reach first appeared on 华体会英超赞助商 - engineers and planners.