Construction Support

Landmark maintains experienced and credentialed field staff to provide you with a wide range of construction and post-construction related support services to help you successfully complete your public- and private-sector construction projects.

Construction support services include, but are not limited to, those detailed below:

Construction-Phase Services
  • Certified Construction Review (CCR)
  • Construction Administration, shop drawing review, contractor RFI
  • Stakeout of site, stormwater management (SWM), utilities, building, curbs, foundations, steel, bolts, etc.
  • Wetland Mitigation construction oversight and plantings
  • Bog Turtle construction monitoring
Post Construction-Phase Services
  • SWM Review for design compliance
  • As-Built Surveys of site, SWM, foundations, sanitary sewer, as required
  • Set Monumentation for ROW and other property markers, as required by the Record Plan
  • Wetland mitigation monitoring


Description of Construction-Phase Services Provided

Click below for more details about our services.

As-Built Surveys

Landmark’s land surveyors will perform as-built surveys for foundations, pilings, utilities, curbs, and anchor bolts, as requested.

As-Built SWM Facility Surveys

Landmark’s land surveyors will perform a stormwater management (SWM) as-built survey and the engineering staff will review for design compliance.

CCR (Sediment & Stormwater Management)

Construction projects in the State of Delaware are required to have an approved Sediment and Stormwater Management Plan. A CCR is required to monitor the construction and operation of these sediment and stormwater facilities for the duration of the project. The CCR will communicate the results of required weekly reviews with the contractor and construction manager. Written reports are prepared and submitted to Authorities Having Jurisdiction (AHJ) and all interested parties in a specified format within 48 hours of the site review. These weekly reports are reviewed by a registered and licensed supervisory Delaware Professional Engineer (P.E.), as required, before forwarding to the appropriate monitoring agency.

During construction of SWM facilities, daily visits are required.  Responsibilities of the CCR include creating a photo log of the construction, obtaining copies of all delivery tickets for materials used in the construction of the facility, completing all required as-built construction checklists, preparation of As-Built SWM calculations and submitting all documents to the AHJ (with as-built surveys of constructed SWM facilities to be provided by site contractor in accordance with the Project Manual).

It is the responsibility of the owner/developer to provide a CCR on required sites, and the responsibility of the contractor to construct necessary controls and to communicate and cooperate with the CCR and DNREC or the delegated agency under established guidelines.

The CCR will work with all interested parties to avoid potential shutdowns due to non-compliance.

Relevant documents may include:

  • Chapter 12, Drainage Code (New Castle County)
  • Delaware Sediment and Stormwater Regulations:
    • Delaware Erosion & Sediment Control Handbook (July 2023)
    • Delaware Post Construction Stormwater Management BMP Standards & Specification (Feb. 2019)
  • Appropriate Stormwater Management Facility Construction Checklist(s)
  • Pond Code 378, as amended for Delaware (USDA Soil Conservation Service)
  • Additional technical and administrative guidelines and requirements by the monitoring agency(s)

Construction Stakeout

Landmark’s land surveyors are experienced with providing accurate stakeout of the site, stormwater BMPs, utilities, building, foundations, steel/anchor bolts, etc.

Construction Administration

Landmark staff provides construction administration assistance including, but not limited to: preparation, submission, and follow up on required permits, interface with technical review agencies, preparation of construction cost estimates and construction documents, bidding assistance, review of shop drawings and material product submittals for compliance with project specifications, and contractor RFI services.

Bog Turtle Habitat Construction Monitoring

Landmark staff includes a Recognized Qualified Bog Turtle Surveyor (QBTS) certified to lead Phases I-III Bog Turtle Investigations and construction monitoring in Delaware, Maryland and Pennsylvania. Agencies will often require construction monitoring in lieu of — or in addition to — investigations. Landmark’s QBTS and approved assistants have extensive experience providing construction monitoring and additional population monitoring studies including the use of radio-telemetry equipment.

SWM Facility Inspections & Maintenance (New Castle County)

Landmark provides engineering and habitat design for all of your stormwater facilities, and can also assist municipal and private property owners, property managers and civic/HOAs with their stormwater pond maintenance, and with semi-annual inspections of underground stormwater facilities at commercial properties, as required by New Castle County.

By identifying deficiencies early and performing routine maintenance, you can prolong the life of your facilities, protect from flooding, save money and avoid costly Violation Notices.

Comprehensive stormwater inspection and maintenance services:

  • Assist with Semi-Annual Inspections, maintenance, and certified annual reports for sub-surface stormwater facilities at commercial properties
  • Regular Inspections to prevent future problems with wet and dry ponds, BMPs, and constructed wetlands
  • Corrective measures for facilities’ structural failures
    • Landscape management
    • Sediment and erosion control
    • Invasive and nuisance species control
    • Retrofit, modification and engineering
  • Buffer zone design and management
  • Wetland mitigation design and construction
  • Municipal compliance assistance
    • MS4 permitting and reporting
    • Maintenance and compliance planning
  • Grant applications and municipal compliance

Wetland Mitigation Construction Oversight

Landmark’s wetland specialists will provide wetland mitigation plan report and design. During construction, staff will continue to assist with the wetland creation project by providing construction oversight and plant installation or supervision of the plant installation.

Wetland Mitigation Monitoring

Landmark’s wetland specialists will perform post-construction monitoring of the hydrologic conditions and success of the habitat and wildlife for the mitigation site. Coordination and reporting will be conducted with the appropriate agencies.