Documentation Reference Tables

The following tables indicate the required documentation of various facility types for preliminary review, PS&E review, and field change requests. The tables also indicate whether the information should reside in construction plans. The construction plans constitute part of the permanent file, but not all project information resides in the construction plans.
The following table shows the data documentation requirements:
Table 3-1: Data Documentation Requirements
Documentation Item
(by facility type)
Stage
Location of Information
Data
Preliminary Review
PS&E Review
Field Changes
Construction Plans
Permanent File
Report
Field survey data
X
X
X
X
Vertical Datum
X
X
X
X
X
X
Historical data
X
X
X
X
X
X
FEMA FIS summary data and maps (where applicable)
X
X
X
X
X
Soil maps
X
X
X
X
Land use maps (when applicable)
X
X
X
X
X
Stream gauge data (where applicable)
X
X
X
X
X
The following table shows the hydrology documentation requirements:
Table 3-2: Hydrology Documentation Requirements
Documentation Item
(by facility type)
Stage
Location of Information
Hydrology
Preliminary Review
PS&E Review
Field Changes
Construction Plans
Permanent File
Report
Drainage area map(s) showing boundaries, outfalls, flow paths, etc.
X
X
X
X
X
X
Relevant watershed parameters (e.g. areas, runoff coefficients, slopes, etc.)
X
X
X
X
X
X
Assumptions and limitations
X
X
X
X
X
Hydrologic method(s) used
X
X
X
X
X
X
Hydrologic calculations
X
X
X
X
X
X
Peak discharges for design and check floods
X
X
X
X
X
X
Runoff hydrographs for design and check floods (where applicable)
X
X
X
X
X
X
The following table shows the channel documentation requirements:
Table 3-3: Channel Documentation Requirements
Documentation Item
(by facility type)
Stage
Location of Information
Channels
Preliminary Review
PS&E Review
Field Changes
Construction Plans
Permanent File
Report
See Hydrology for runoff determination
X
X
X
X
X
X
Channel cross sections and thalweg profile
X
X
X
X
X
X
Plan showing location of sections
X
X
X
X
X
Cross section subdivisions and "n"-values
X
X
X
X
X
X
Assumptions and limitations
X
X
X
X
X
Hydraulic method or program used
X
X
X
X
X
X
Water surface elevations and average velocities for design and check floods
X
X
X
X
X
X
Analysis of existing channel for comparison (if improvements proposed)
X
X
X
X
X
X
The following table shows the culvert documentation requirements:
Table 3-4: Culvert Documentation Requirements
Documentation Item
(by facility type)
Stage
Location of Information
Culverts
Preliminary Review
PS&E Review
Field Changes
Construction Plans
Permanent File
Report
See Hydrology for discharge data
X
X
X
X
X
X
See Channels for tailwater data
X
X
X
X
X
X
Design criteria (Allowable headwater, outlet velocities, FEMA etc.)
X
X
X
X
X
X
Culvert hydraulic computations
X
X
X
X
X
X
Unconstricted and through-culvert velocities for design and check floods
X
X
X
X
X
X
Calculated headwater for design and check floods
X
X
X
X
X
X
Estimated distance upstream of backwater effect
X
X
X
X
X
X
Magnitude and frequency of overtopping flood
X
X
X
X
X
X
The following table shows the bridge documentation requirements:
Table 3-5: Bridge Documentation Requirements
Documentation Item
(by facility type)
Stage
Location of Information
Bridges
Preliminary Review
PS&E Review
Field Changes
Construction Plans
Permanent File
Report
See Hydrology for discharge data
X
X
X
X
X
X
See Channels for highwater data
X
X
X
X
X
X
Design criteria/parameters/assumptions (velocities, backwater, FEMA, etc.)
X
X
X
X
X
X
Plan showing location of HEC-RAS cross sections
X
X
X
X
X
X
Bridge hydraulic computations
(cross-section output)
X
X
X
X
Unconstricted and through-bridge velocities for design and check floods
X
X
X
X
X
X
Calculated maximum backwater for design and check floods
X
X
X
X
X
X
Estimated distance upstream of backwater effect
X
X
X
X
X
X
Magnitude and frequency of overtopping flood
X
X
X
X
X
X
Scour calculations*
X
*
Estimated scour envelope*
X
X
X
X
X
*
* Can be combined with the scour computations report required by Bridge Division, Geotechnical Section.
The following table shows the pump station documentation requirements:
Table 3-6: Pump Station Documentation Requirements
Documentation Item
(by facility type)
Stage
Location of Information
Preliminary Review
PS&E Review
Field Changes
Construction Plans
Permanent File
Report
Pump Stations
See Hydrology for discharge data
X
X
X
X
X
X
See Channels for tailwater data
X
X
X
X
X
X
See Storm Drains for inlet and outlet conduit data
X
X
X
X
X
X
Stage/storage curve
X
X
X
X
X
Pump capacity and performance computations
X
X
X
X
X
Pump hydraulic performance curves
X
X
X
X
X
Design peak and attenuated peak discharges
X
X
X
X
X
X
Maximum allowable headwater elevation
X
X
X
X
X
X
Switch-on and cut-off elevations
X
X
X
X
X
Sump dimensions
X
X
X
X
Head loss calculations and total dynamic head
X
X
X
X
X
Pump sizes
X
X
X
X
X
Pump station details
X
X
X
The following table shows the storm drain documentation requirements:
Table 3-7: Storm Drain Documentation Requirements
Documentation Item
(by facility type)
Stage
Location of Information
Storm Drains
Preliminary Review
PS&E Review
Field Changes
Construction Plans
Permanent File
Report
See Hydrology for discharge data
X
X
X
X
X
See Channels for tailwater data
X
X
X
X
X
Storm drain schematic/layout showing trunklines, laterals, inlets, outfall etc.
X
X
X
X
Storm drain hydraulic computations including all allowables
X
X
X
X
X
Storm drain plan/profile sheets w/ hydraulic grade line
X
X
X
X
Outfall considerations and information
X
Flow direction arrows
X
X
X
X
Evaluation of existing facility (if present)
X
X
X
The following table shows the facility documentation requirements:
Table 3-8: Other Facility Documentation Requirements
Documentation Item
(by facility type)
Stage
Location of Information
Other Facilities
Preliminary Review
PS&E Review
Field Changes
Construction Plans
Permanent File
Report
Drainage area maps
X
X
X
X
X
X
Design criteria/parameters/assumptions
X
X
X
X
X
Hydrologic computations
X
X
X
X
X
X
Hydraulic computations
X
X
X
X
X
X
Plan/profile and details
X
X
X
X
X
Design and check flood before and after conditions (highwater, velocities, etc.)
X
X
X
X
X
X
The following table shows the SW3P Layout requirements for projects requiring authorization under the Construction General Permit (TXR150000):
Table 3-9: SW3P Layout Requirements
Documentation Item
(by facility type)
Stage
Location of Information
SW3P Layouts
Preliminary Review
PS&E Review
Field Changes
Construction Plans
Permanent File
Report
Drainage patterns
X
X
X
X
X
X
Approximate slopes anticipated after major grading activities
X
X
X
X
X
X
Areas that will and will not be disturbed
X
X
X
X
X
X
Locations where storm water will discharge from the project (i.e. discharge points)
X
X
X
X
X
X
Acres of disturbed area that will drain to each discharge point
1
X
X
X
X
X
X
Locations of all major BMPs (e.g. silt fence, rock berm, sediment traps, etc.)
2
X
X
X
X
X
X
Areas that will receive temporary or permanent stabilization (e.g. temporary seeding, soil retention blankets, slope texturing, etc.)
3
X
X
X
X
Locations of surface waters and wetlands on or adjacent to the site (if known)
X
X
X
X
X
X
Names of surface waters that will receive discharge from the project
1
X
X
X
X
X
X
1
Alternatively, this could be included in the SW3P Summary Sheet
2
Structural controls are required at all down slope boundaries, and side slope boundaries as appropriate. Velocity dissipation devices at discharge locations are required if necessary to provide a non-erosive flow velocity from the structure to a watercourse. If it will be necessary to pump or channel standing water from the site, controls to remove sediment from this water are required. BMPs may also be used to divert storm water around disturbed areas.
3
Temporary stabilization is required when work in a disturbed area will cease for more than 21 days.
The following table shows the SW3P Summary Sheet requirements for projects requiring authorization under the Construction General Permit (TXR150000):
Table 3-10: SW3P Summary Sheet Requirements
Documentation Item
(by facility type)
Stage
Location of Information
SW3P Summary Sheet
Preliminary Review
PS&E Review
Field Changes
Construction Plans
Permanent File
Report
If there are more than 10 disturbed acres that drain to a single discharge point, and if it is not possible to install a sediment basin that provides storage for the runoff from a 50%AEP, 24-hour storm per acre drained, a reason why such a basin is not feasible
1
X
X
X
X
X
X
A description of the nature of the construction activity
X
X
X
X
X
X
Description of controls to reduce off site tracking of sediment
X
X
X
X
X
X
Description of construction and waste materials expected to be stored on-site and a description of controls to minimize pollutants from these materials.
X
X
X
X
X
X
A list of other potential pollutants and their sources, and description of controls to minimize pollutants from these sources
2
X
X
X
X
X
X
Total acreage of the project area
X
X
X
X
X
X
Total acreage of the project area that will be disturbed
X
X
X
X
Description of the soil or quality of the existing discharge from the site
3
X
X
X
X
X
X
A description of the intended schedule or sequence of activities that will disturb soils for major portions of the site.
4
X
X
X
X
X
X
A description of the intended sequence of erosion and sediment control BMP implementation
4
X
X
X
X
X
X
A note that the contractor will be responsible for compliance with all applicable environmental laws, rules and regulations for any work not described in the plans.
X
X
X
X
X
X
A note that the contractor is responsible for installing and maintaining BMPs as described in the plans and as directed by TxDOT personnel.
X
1
Acceptable reasons include soils type, slope, available area, public safety, precipitation patterns, site geometry, site vegetation, infiltration capacity, geotechnical factors, depth to groundwater, and other similar considerations.
2
Consider if the following may be a potential pollutant: sediment, oil and grease, coolant, pathogens, concrete truck washout, nutrients, etc. Effective controls may include requiring the contractor to maintain equipment free of leaks, develop a spill response plan, cover stored material/chemicals, prohibit concrete wash out in the rain or within a certain distance of waterways, prohibit the storage of materials/chemicals on a paved surface, prohibit application of fertilizer when rain is forecast or in excess of required amounts, etc.
3
Consider whether or not preexisting conditions indicate the discharges from the area already contain excessive sediment, or if the site will be unusually vulnerable to erosion during construction.
4
The sequences of disturbance and BMP implementation should correspond. For example, “Silt fence and rock berm will be installed prior to initial clearing and grading…after final grading, permanent seeding will be employed.”