ADVANCE ENGINEERING, PC

Civil and Environmental Engineering

About AE

Drinking Water

Wastewater

Site Engineering

Principal's Bio

 
Wastewater Treatment and Disposal

Our Expertise

Mr. Wonacott has extensive experience with septic systems and wastewater treatment and disposal in Teton County and the surrounding area.  These projects include septic systems for individual homes and commercial developments, small package treatment plants, lift stations and force mains, and municipal lagoon systems.


Individual septic systems and leachfields are widely used in the region.  Mr. Wonacott has designed many of these systems, both large and small, including conventional gravity systems, pumped systems, and elevated (mound) leachfields, and intermittent sand filters or "enhanced" septic systems.  He has a good understanding of local soil and groundwater conditions, and gives particular attention to careful siting and design, in order to protect the groundwater which is the primary source of drinking water in the region.  Advance Engineering has completed the DEQ permitting for several large leachfields, as required by Wyoming DEQ Chapter 16 regulations for leachfields larger than 2,000 gpd.

Wastewater engineering requires special considerations to ensure trouble-free operation.  Solids in wastewater must be propery handled and conveyed.  Designs must minimize odor generation and its potential impacts.  Pumps must be carefully selected to ensure long and trouble-free life.  These and other factors must be addressed in order to design a system that is reliable, easy to maintain, and economical to construct and operate.  Our specific project experience includes:

  • Sanitary sewer design
  • Septic system design
  • Enhanced septic systems
  • Grease problems
  • Septage handling
  • Raw sewage pumping
  • Variable-speed pumping
  • UV disinfection
  • DEQ Chapter 16 large leachfield permitting
  • DEQ Chapter 23 subdivision review
  • Odor and corrosion control
Sewer Line Installation

Representative Projects

Wind River View Campground - Septic Systems Design and Permitting

This 24-site campground and RV park located near Boulder planned to add sewer services to 12 unsewered sites.  Advance Engineering prepared drawings and specifications and obtained DEQ permits for the wastewater collection system, septic tanks, and leachfields needed to serve these sites.  Compliance with DEQ Water Quality Rules and Regulations Chapter 16 for large leachfields required the relocation of an existing leachfield that was serving the other 12 sites.  This approach allowed the owner to construct 18 additional sites and a septic system to serve them, and avoid installing monitoring wells and the ongoing trouble and expense of annual septic tank effluent and groundwater monitoring.

Shootin’ Iron 1 and 2 – Enhanced Septic System
Hydrogeologic conditions at this site required that an enhanced treatment septic system be designed in accordance with DEQ Chapter 23 regulations.  An intermittent sand filter with a dosing pump was selected as the best, most cost-effective alternative.  The intermittent sand filter has advantages over other types of enhanced treatment systems including recirculating pumps, aerators, fabric filters, or UV disinfection lamps.  The intermittent sand filter is more reliable (because there are fewer moving parts to break down), and requires less maintenance (i.e. removing sludge from an aerated treatment tank, replacing filters, etc.).  Advance Engineering designed the system, prepared plans and specifications, and handled the permitting.


Jackson Hole Mountain Resort - Maintenance Facility Sewer Line

Design, preparation of construction plans and specifications, and DEQ permitting of 570 feet of 8-inch PVC sewer to serve the new Maintenance Facility.  The new sewer alignment was highly constrained by existing utilities and structures, and included one section more than 20 feet deep.


Snake River Mobile Home Park - Septic System Permitting

Evaluation and DEQ Chapter 16 permitting of large leachfields (greater than 2,000 gpd) serving this mobile home park.  Developed and analyzed hydrogeologic data, and prepared and submitted permit application package.  The selected plan included drilling a new water supply well in an upgradient location to protect source water quality.


Snake River Brewing Co., Inc. - Wastewater Characterization Study

Like many commercial establishments, the brewery wastewater was subject to a sewer rate surcharge based on its strength.  This study involved sampling and characterization of wastewater volume and strength (BOD and TSS), identification of the appropriate rate classification per the Town of Jackson sewer rate schedule, and evaluation of the potential cost savings that might be realized by pretreatment.  Based on study results, Advance Engineering completed a Request for Reclassification with the Town that resulted in a reduction of the rate surcharge and a $5,000 per year savings on sewer bills for the owners.


Residential Septic Systems and Leachfields - Design, Permitting, and Troubleshooting

Advance Engineering has designed numerous individual onsite wastewater treatment and disposal systems throughout Teton County.  These include conventional gravity septic systems, pumped systems, elevated leachfield (mound) systems required due to high groundwater levels, and enhanced-treatment systems to compy with DEQ regulations.  The firm also provides troubleshooting assistance for systems experiencing operational problems.


Teton County, Wyoming - Grease Management Study

Restaurant grease must be properly managed to avoid creating problems in wastewater collection and treatment systems.  This study summarized the status of grease management in Teton County, identified options available for dealing with grease, reviewed what other communities are doing, and made recommendations for future management plans.

Septic System Infiltrators