ABOUT US

At G.H.E Civil, we offer wastewater and stormwater consultancy services. We specialise in compliant on-site wastewater system desgin, including customised passive (non-powered) solutions. For new builds, our site layout consultancy helps optimise infrastructure placement to reduce construction costs and protect your assets from inundation. Our approach focuses on practical, low-maintenance engineering solutions that enhance the environment and support long-term self-sufficiency for our clients.

    

Our Services

SITE LAYOUT:

  • Consultancy on the optimal placement of structures in relation to the stormwater and wastewater engineering aspects of a development.


WASTEWATER: 

  • Design of on-site wastewater treatment and land application systems in accordance with Auckland Council Technical Publication 58 (TP58) or AS NZS: 1547 including construction review.
  • Specialists in custom design of non- powered wastewater systems.
  • Pressure sewer connections.


STORMWATER:

  • Flood analysis
  • Overland flow assessment
  • Coastal inundation risk assessment
  • Attenuation – retention and detention
  • Civil infrastructure, public network connections


PROJECT MANAGEMENT:

  • Cost estimation, logistics, site safety, sediment and erosion control, construction monitoring.


COMPLIANCE INSPECTIONS & PRODUCER STATEMENT AUTHORSHIP:(For E1 Surface Water & G13 Foul Water)

  • Inspections of wastewater and stormwater system installation
  • Producer statement design (PS1)
  • Producer statement design review (PS2)
  • Producer statement construction review (PS4). Required for application of the code of compliance certificate (CCC).






Site Layout

Optimum placement of structures may facilitate the option to install a non-powered wastewater disposal system on-site and may also streamline the process of obtaining consent by avoiding placing structures in overland flow paths and flood plains. Well considered placement of access ways may serve to efficiently utilise the drainage created by the construction to protect the wastewater disposal area from runoff. Effective site design will help to minimise costs and utlise the budget effectively.


Our service includes a desk top study, site visit and a preliminary site layout proposal that may be presented to the architect or geotechnical engineer as a starting point to get the planning and site investigation underway.

 

On-Site Wastewater Design

Onsite wastewater is generated from household usage. The wastewater is discharged from the laundry, kitchen, bathroom , toilet and any other water sources within the household. It may be referred to as wastewater, septic or effluent and consists of grey and black water.


A thoughtful wastewater design has value because it can minimise ongoing maintenance and operating costs for the client and will ideally utilise the discharged wastewater beneficially for the vegetation on site. Our service includes a site visit with a soil and water table assessment, and a customised wastewater plan which includes the compliance documents to submit to council.


Our on-site wastewater disposal systems are designed in accordance with the Auckland Council Technical Publication 58 (TP58) or the ASNZS:1547 for all other regions.

Stormwater Design

Stormwater is run off from rainfall which travels overland or is discharged in concentrated flows from roof catchments, concrete driveways and other impermeable surfaces. Using rainfall data, modelling and analysis we provide designs and reports for:


  • Flood analysis and over land flow paths (OFP)
  • Coastal inundation risk assessment
  • Public stormwater infrastructure connections
  • Design of stormwater attenuation


The People


Anna Finkenauer:

Technical Director G.H.E Civil Ltd.

Wastewater & Stormwater Design Consultant.

(NZDE Civil, MEngNZ)


I have a New Zealand Diploma in Civil Engineering and over seven years experience in wastewater and stormwater consultancy. I take time to understand my client’s requirements so I can offer them a practical design that is suited to their site. 


I specialise in compliant on-site wastewater design and will explore the option to install an off-grid wastewater system if site conditions are suitable. I am focused on providing practical, robust designs that are built to last. I also consider the logistics of site access and installation to ensure the construction phase runs smoothly. 


I am committed to providing the client with the best options for their site which also takes into account the long-term maintenance required for upkeep of the infrastructure. I provide transparent price estimates that provide an overview of the consultancy costs for the entire project from beginning to end. 


If you value clear communication and a friendly, practical service then feel free to get in touch or email your plans and questions to

anna@ghecivil.com


Our Associates


Scott Nabarro

Owner Operator: Alpha Drainage

alphadrainage.co.nz

Scott has over a decade of experience drain laying and installing wastewater and non-potable water reticulation systems for lifestyle properties, rural blocks and new builds. He is competent with installation of niche design wastewater systems (including non-powered custom designs) that are robust and require less maintenance over the lifecycle of the system. Scott takes pride in his work and his commitment to quality ensures his workmanship stands the test of time and the elements.


Dan O'Donnell

Owner Director KP Tanks 

kptanks.co.nz

Dan has extensive experience in the stormwater, wastewater and potable water industry manufacturing precast concrete tanks and other concrete infrastructure products. Dan's knowledge of logistics, commitment to meticulous design and improving the water quality of New Zealand aligns with G.H.E Civil's values. By offering a custom service in which his products can be modified to suit the application, the customer can be sure they receive a site-specific practical design that has their best interests at heart. 


GALLERY