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Technical Information Report
PREPARED FOR:
Renton School District
Andrew Hollenback
300 SW 7th St
Renton, WA 98057
PROJECT:
Talbot Hill Elementary School
2300 Talbot Rd S
Renton, WA 98055
2230870.10
PREPARED BY:
James Daley
Project Engineer
REVIEWED BY:
David Nason, PE
Principal
DATE:
April 2024
Revised June 2024
DEVELOPMENT ENGINEERING
SAMorman 07/05/2024
Surface Water Enginering
JFarah 07/10/2024
Technical Information Report
PREPARED FOR:
Renton School District
Andrew Hollenback
7812 S 124th St
Renton, WA 98178
PROJECT:
Talbot Hill Elementary School
2300 Talbot Rd S
Renton, WA 98055
2230870.10
PREPARED BY:
James Daley
Project Engineer
REVIEWED BY:
David Nason, PE
Principal
DATE:
April 2024
Revised June 2024
I hereby state that this Technical
Information Report for the Providence
Renton Campus project has been
prepared by me or under my supervision,
and meets the standard of care and
expertise that is usual and customary in
this community for professional
engineers. I understand that City of
Renton does not and will not assume
liability for the sufficiency, suitability, or
performance of drainage facilities
prepared by me.
06/21/2024
0
Technical Information Report
Talbot Hill Elementary School
2230870.10
Table of Contents
Section Page
1.0 Project Overview ............................................................................................................................ 1
1.1 Purpose and Scope............................................................................................................. 1
1.2 Existing Conditions.............................................................................................................. 1
1.3 Post-Development Conditions ............................................................................................ 1
1.4 Drainage Basins .................................................................................................................. 2
1.5 Sensitive Areas ................................................................................................................... 2
2.0 Conditions and Requirements Summary .................................................................................... 2
2.1 CR 1 – Discharge at the Natural Location .......................................................................... 2
2.2 CR 2 – Offsite Analysis ....................................................................................................... 2
2.3 CR 3 – Flow Control ............................................................................................................ 2
2.4 CR 4 – Conveyance System ............................................................................................... 3
2.5 CR 5 – Erosion and Sediment Control ................................................................................ 3
2.6 CR 6 – Maintenance and Operations.................................................................................. 3
2.7 CR 7 – Financial Guarantees and Liability ......................................................................... 3
2.8 CR 8 – Water Quality .......................................................................................................... 3
2.9 CR 9 – Onsite BMPs ........................................................................................................... 3
2.10 SR 1 – Other Adopted Requirements ................................................................................. 4
2.11 SR 2 – Flood Hazard Delineation ....................................................................................... 4
2.12 SR 3 – Flood Protection Facilities ....................................................................................... 4
2.13 SR 4 – Source Control ........................................................................................................ 4
2.14 SR 5 – Oil Control ............................................................................................................... 4
2.15 SR 6 – Aquifer Protection Area ........................................................................................... 4
3.0 Off-Site Analysis ............................................................................................................................ 4
4.0 Flow Control, Low Impact Development (LID), and Water Quality Facility Analysis and
Design ............................................................................................................................................. 5
5.0 Conveyance System Analysis and Design .................................................................................. 5
6.0 Special Reports and Studies ........................................................................................................ 5
7.0 Other Permits ................................................................................................................................. 5
8.0 CSWPPP Analysis and Design ..................................................................................................... 5
8.1 ESC Plan Analysis and Design ........................................................................................... 5
Technical Information Report
Talbot Hill Elementary School
2230870.10
8.2 SWPPS Plan Design ........................................................................................................... 6
9.0 Bond Qualities, Facility Summaries, and Declaration of Covenant .......................................... 7
10.0 Operations and Maintenance Manual .......................................................................................... 7
Conclusion ................................................................................................................................................... 7
Technical Information Report
Talbot Hill Elementary School
2230870.10
Appendices
Appendix A
Figures
1-1 ............. TIR Worksheet
1-2 ............. Vicinity Map
1-3 ............. Soil Map
3-1 ............. Erosion Hazards Map
3-2 ............. Steep Slopes Map
3-3 ............. Slide Hazard Map
3-4 ............. Flood Hazard Map
3-5 ............. Coal Mine Hazard Map
3-6 ............. Aquifer Protection Map
3-7 ............. Wetland and Water Classifications Map
3-8 ............. FEMA Flood Hazard Map
Technical Information Report
Talbot Hill Elementary School 1
2230870.10
1.0 Project Overview
1.1 Purpose and Scope
This report accompanies the civil engineering plans and documents for the Talbot Hill Elementary
School located at 2300 talbot Road S in Renton, Washington. The project site encompasses Tax
Parcel 3023059073 in the city of Renton, King County, Washington. The parcel is located within
the Northwest Quarter of the Northwest Quarter of Section 30, Township 23 North, Range 5 East,
of the Willamette Meridian. See Figure 1-2 for a Site Vicinity Map.
The Renton School District is proposing improvements to the Talbot Hill Elementary School. The
project proposes to repair areas of the existing parking lot effected by sink holes, to update ADA
ramps in the parking lot, to relocate the front entrance flagpole, to replace the existing flagpole
base with concrete walk, to repair damaged asphalt and concrete throughout the site, to install
new fencing at the parent drop-off area, to replace damaged fencing, and to replace downspouts
at the ground connection.
Additionally, the School District proposes to install two area drains to address stormwater ponding
at the rubber matted play area, and to reconnect an existing damaged drainpipe to an existing
catch basin. The rubber matting covers an existing catch basin impeding the surface flow of
stormwater runoff from entering the existing stormwater system. The damage drainpipe is
currently outlets to the adjacent landscaped area causing erosion.
The project site is bound by S 23rd Street to the North, Thomas Teasdale Park to the east, private
residences to the south, and Talbot Road S to the west. There are no proposed revisions to any
portion of the frontage and no proposed changes to the wet or dry utilities apart from the area
drain connection to the existing onsite stormwater system.
The 2022 City of Renton Surface Water Design Manual (CORSWDM) establishes the
methodology and design criteria used for the project.
1.2 Existing Conditions
The site is the current location for the Talbot Hill Elementary School. The school was constructed
in 1970 with a total building area of 88,379 square feet. Since the construction of the school the
Renton School District has added an additional three classroom portables with a total area of
4,495 square feet of space for staff and students. The site which the school resides on has a
total area of 472,699 square feet (10.85 Acres).
1.3 Post-Development Conditions
The Renton School District is proposing several improvements to the Talbot Hill Elementary
School. Upon project completion the site will have repaired portions of the parking lot damaged
by sink holes, updated all existing onsite ramps to meet current ADA standards, relocated the
front entrance flagpole, replaced flagpole foundation with cement concrete walk, replaced
damaged asphalt and cement concrete pavements, replaced downspout ground connections,
installed new 6-foot and 4-foot fencing at the parent drop-off location, installed area drains in the
parking lot to solve ponding issues, and reconnected an existing drainpipe to the existing
stormwater system to solve erosion issues.
The proposed improvements will replace 4,290 square feet (0.01 ac) of hard surfaces.
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2230870.10
1.4 Drainage Basins
The site is located within the Lower Green River Subwatershed per the King County
Green/Duwamish River Watershed map, as delineated by the King County Department of Natural
Resources and Parks Water and Land Resources Division.
The total area of work is 0.25 acres. The proposed improvements of 0.002 acres of new
impervious surfaces will sheet flow and drain to the existing onsite stormwater system. The
proposed improvements will create 0.03 acres of new pervious surfaces which will drain to the
existing onsite stormwater system. There are no proposed changes to the existing onsite
stormwater drainage system.
1.5 Sensitive Areas
The Sensitive Area maps provided by the City of Renton were reviewed and it was determined
portions of the site have Steep Slope, Landslide, and Coal Mine hazards.
The Steep Slope and Landslide hazards are located at a small portion of the site in the
south/southwest corner of the site. There is no work proposed in these areas, and these areas
will not be impacted by proposed project.
The Coal Mine hazard is located in the north/northeast portion of the site where the existing front
parking lot is located. The coal mines are creating sink holes which are impacting the existing
parking. The project proposes repairs to the front parking lot to address these issues and reduce
future impacts to the parking lot.
2.0 Conditions and Requirements Summary
The project triggers Full Drainage Review because it results in more than 2,000 square feet of
new and/or replaced impervious surface. Below is a summary of how the proposed project will
meet the Core Requirements (CR) and how it will meet applicable Special Requirements (SR).
2.1 CR 1 – Discharge at the Natural Location
Talbot Hill E.S. has a single discharge point from a catch basin located on the west property.
This point discharges to a public catch basin located on the east side of Talbot Road S. The
discharge point will be maintained by this project. There are no proposed changes to the existing
storm system.
2.2 CR 2 – Offsite Analysis
The project is exempt from providing an offsite analysis.
The project does not change the rate, volume, duration, or location of discharge to and from the
project site.
2.3 CR 3 – Flow Control
This project is exempt from providing flow control.
The proposed work for this project is adding less than 5,000 square feet of new plus replaced
impervious surface and less than 3.4 acres of new pervious surface.
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Talbot Hill Elementary School 3
2230870.10
Work performed at the existing front parking lot impacted by sink holes is classified as
maintenance and therefore is exempt from providing flow control as well as not included in the
5,000 square feet of new plus replaced impervious surface total.
2.4 CR 4 – Conveyance System
The conveyance system is not required to be analyzed for conveyance capacity.
The existing onsite conveyance system will not experience a change in flow characteristics as a
result of the proposed project.
2.5 CR 5 – Erosion and Sediment Control
Onsite land disturbance will consist of clearing the work site and the demolition of damaged
fencing. Erosion and sediment control will be provided with the use of catch basin inlet
protection. See Section 8.0 for Construction Stormwater Pollution Prevention Plan (CSWPPP)
analysis and design.
2.6 CR 6 – Maintenance and Operations
Maintenance and operations of all drainage facilities will be maintained by the Renton School
District. The project does not propose any changes to the existing storm system. The existing
Operation and Maintenance Manual will apply to the system.
2.7 CR 7 – Financial Guarantees and Liability
This project will provide financial guarantees and liability per City of Renton requirements. See
the City of Renton Bond Quantities Worksheet in Figure 9-1.
2.8 CR 8 – Water Quality
This project is exempt from providing water quality.
The proposed work for this project is adding less than 5,000 square feet of new plus replaced
pollution generating impervious surfaces.
Work performed at the existing front parking lot impacted by sink holes is classified as
maintenance and therefore is exempt from providing water quality as well as not included in the
5,000 square feet of new plus replaced impervious surface total.
2.9 CR 9 – Onsite BMPs
This project proposes work on an Individual Lot that is classified as a Large Lot as the site is
larger than 22,000 square feet. Therefore, for CR 9, it must meet the requirements for Large Lot
BMPs, as described in Section 1.2.9.2.2 in the CORSWDM. Due to the existing developed site
conditions, meeting the LID performance requirement is not feasible. The onsite BMPs required
by the City are listed below:
1. Full Infiltration: Existing developed area is designed to drain into the onsite stormwater
system. It is not feasible to meet this BMP.
2. Limited Infiltration: Existing developed area is designed to drain into the onsite
stormwater system. It is not feasible to meet this BMP.
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Talbot Hill Elementary School 4
2230870.10
3. Bioretention: Existing developed area is designed to drain into the onsite stormwater
system. It is not feasible to meet this BMP.
4. Permeable Pavement: Existing developed area is designed to drain into the onsite
stormwater system. It is not feasible to meet this BMP.
5. Basic Dispersion: Existing developed area is designed to drain into the onsite stormwater
system. It is not feasible to meet this BMP.
6. Reduced Impervious Surface Credit: Existing developed area is designed to drain into
the onsite stormwater system. It is not feasible to meet this BMP.
7. Native Growth Retention Credit: There is no new impervious surface that could be
mitigated by the native vegetated surface. It is not feasible to meet this BMP.
8. Tree Retention Credit: There is no new impervious surface proposed that could be
mitigated by tree retention. It is not feasible to meet this BMP.
2.10 SR 1 – Other Adopted Requirements
The project is included in the Lower Green River Drainage Basin. City and County basin
requirements will be followed where applicable.
2.11 SR 2 – Flood Hazard Delineation
The proposed project is not in or adjacent to the 100-year floodplain. See Figure 3-8 for the
FEMA National Flood Hazard map.
2.12 SR 3 – Flood Protection Facilities
This project does not rely on existing flood protection facilities, nor will it modify or construct new
flood protection facilities.
2.13 SR 4 – Source Control
The project proposes the replacement of existing ramps to meet ADA requirements and a new
cement concrete walkways that will not be exposed to any vehicles. Therefore, it does not meet
the requirements for source control purposes.
Work performed at the existing parking lot impacted by sink holes is classified as maintenance
and therefore is exempt from providing source control.
2.14 SR 5 – Oil Control
The site does not meet high use criteria and is not subject to oil control measures.
2.15 SR 6 – Aquifer Protection Area
The site is not located within any of the Groundwater Protection Areas.
3.0 Off-Site Analysis
The project is exempt from providing an Off-Site Analysis.
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Talbot Hill Elementary School 5
2230870.10
Per Section 1.2.2 Core Requirement #2: Offsite Analysis under the Exemption From Core
Requirement #2 this project does not change the rate, volume, duration, or location of discharges
to and from the project site (e.g., where existing impervious surface is replaced with other
impervious surface having similar runoff-generating characteristics, or where pipe/ditch
modification do not change existing discharge characteristics).
4.0 Flow Control, Low Impact Development (LID), and Water Quality Facility
Analysis and Design
The project is not proposing any changes to the existing storm system.
Per Section 1.2.3 Core Requirements #3: Flow Control Facilities under Exemption From Core
Requirement #3 this project has less than 5,000 square feet of new plus replaced impervious
surfaces proposed and less than ¾ acres of new pervious surfaces added. Therefore, the project
is exempt from providing any Flow Control Facilities
Per Section 1.2.8 Core Requirements #8: Water Quality Facilities under Exemption From Core
Requirement #8 this project has less than 5,000 square feet of new plus replaced impervious
surfaces proposed and less than ¾ acres of new pervious surfaces added. Therefore, the project
is exempt from providing a Water Quality Facility.
Work performed at the existing front parking lot impacted by sink holes is classified as
maintenance and therefore is exempt from providing flow control or water quality as well as not
included in the 5,000 square feet of new plus replaced impervious surface total.
There are no Low Impact Developments (LID) proposed for this project.
5.0 Conveyance System Analysis and Design
There are no proposed changes to the existing storm system. The existing conveyance system
will be protected and maintained throughout this project.
6.0 Special Reports and Studies
The project does not propose any changes to the existing storm system. A Geotechnical Report
was not necessary for the scope of the site improvements.
The nearest wetland to the site is more than 500 feet to the west. The site stormwater is
collected on site and discharges on the west side of the site and does not drain towards the
wetland. A Wetland Report was not necessary for the scope of the improvements.
No other reports and/or studies were needed for the proposed site improvements.
7.0 Other Permits
No other permits are required for the proposed site improvements.
8.0 CSWPPP Analysis and Design
8.1 ESC Plan Analysis and Design
The proposed development shall comply with guidelines set forth in City of Renton drainage
requirements. The plan will include erosion/sedimentation control features designed to prevent
Technical Information Report
Talbot Hill Elementary School 6
2230870.10
sediment-laden runoff from leaving the site or adversely affecting critical water resources during
construction. A construction Stormwater Pollution Prevention Plan (CSWPPP) is provided in a
separate document.
The following measures will be shown on the ESC plans and will be used to control
sedimentation/erosion processes:
1. Clearing Limits – All areas to remain undisturbed during the construction of the project will
be delineated prior to any site clearing or grading.
2. Cover Measures – Cover measures will be implemented for the disturbed areas.
3. Perimeter Protection – Filter fabric fences for site runoff protection will be provided at the
downstream site perimeter.
4. Traffic Area Stabilization – Traffic area stabilization is not applicable for this project.
5. Sediment Retention – Inlet sediment protection will be utilized as part of this project.
6. Surface Water Collection – Catch basins and conveyance pipes will provide surface water
collection.
7. Dewatering Control – Water from dewatering operations should be discharged to a well-
vegetated area or to a temporary sediment control facility.
8. Dust Control – Dust control measures, including sweeping and water truck, will be
implemented when exposed soils are dry to the point that wind transport is possible; and
roadways, drainage ways, or surface waters are likely to be impacted.
9. Flow Control – Flow control is not required for this project.
10. Control Pollutants – Stormwater pollution prevention measures will be implemented to
prevent, reduce or eliminate the discharge of pollutants to onsite or adjacent stormwater
systems.
11. Protect Existing and Proposed Stormwater Facilities and On-site BMPs – Contractor shall
inspect and maintained protective measures at all times until the completion of the project.
12. Maintain Protective BMPs – All protective BMPs used during construction will be properly
monitored and maintained until the completion of the project.
13. Manage the Project – Contractor shall coordinate in a timely manner all inspection.
8.2 SWPPS Plan Design
The project is proposing the replacement of pedestrian ramps to meet current ADA requirements,
replacement of cement concrete walkways, and parking lot asphalt maintenance. In addition,
there will be some minor work in existing grassy areas that will have the potential for dirt and
debris to collect in paved areas. Below is a list BMPs from the King County Stormwater Pollution
Prevention Manual dated July 2021, that will be applied throughout the extent of the project.
· A-20: Concrete and Asphalt Application
· A-26: Landscaping Activities, Vegetation Management, and Irrigation
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Talbot Hill Elementary School 7
2230870.10
· A-27: Clearing and Grading of Land for Small Construction Projects
· A-32: Sidewalk Maintenance
9.0 Bond Qualities, Facility Summaries, and Declaration of Covenant
Bond Quantities – A Site Improvement Bond Quantities Worksheet has been completed and
submitted along with Site Plans and this TIR.
Facility Summaries – This project is exempt from Flow Control and Water Quality. A flow
Control and Water Quality Facility Summary Sheet and Sketch is not needed for this project.
Declaration of Covenant – There are no proposed changes to the existing stormwater system.
A Declaration of Covenant is not required for this project.
10.0 Operations and Maintenance Manual
Maintenance and operations of all drainage facilities will be maintained by the owner. The
existing Operations and Maintenance Manual shall be referred to for the existing system. The
proposed area drains at the play area to address ponding issues in that location will be connected
to the existing system and will be covered by the existing Operations and Maintenance Manual
for the existing system whi9ch covers maintenance to catch basins and drainage pipes.
Conclusion
This site has been designed to meet or exceed the requirements of the 2022 City of Renton
Surface Water Design Manual (CORSWDM).
This analysis is based on data and records either supplied to or obtained by AHBL. These documents
are referenced within the text of the analysis. The analysis has been prepared using procedures and
practices within the standard accepted practices of the industry.
AHBL, Inc.
James Daley
Project Engineer
April 2024
Revised June 2024
Q:\2023\2230870\10_CIV\NON_CAD\REPORTS\Storm - Site\Permit Sub 2\20240401 Rpt (TIR) 2230870.docx
Technical Information Report
Talbot Hill Elementary School
2230870.10
Appendix A
Figures
1-1 .................... TIR Worksheet
1-2 .................... Vicinity Map
1-3 .................... Soil Map
3-1 .................... Erosion Hazards Map
3-2 .................... Steep Slopes Map
3-3 .................... Slide Hazard Map
3-4 .................... Flood Hazard Map
3-5 .................... Coal Mine Hazard Map
3-6 .................... Aquifer Protection Map
3-7 .................... Wetland and Water Classifications Map
3-8 .................... FEMA Flood Hazard Map
CITY OF RENTON SURFACE WATER DESIGN MANUAL
2022 City of Renton Surface Water Design Manual 6/22/2022
8-A-1
REFERENCE 8-A
TECHNICAL INFORMATION REPORT (TIR)
WORKSHEET
Part 1 PROJECT OWNER AND
PROJECT ENGINEER Part 2 PROJECT LOCATION AND
DESCRIPTION
Project Owner _____________________________
Phone ___________________________________
Address __________________________________
_________________________________________
Project Engineer ___________________________
Company _________________________________
Phone ___________________________________
Project Name __________________________
CED Permit # ________________________
Location Township ________________
Range __________________
Section _________________
Site Address __________________________
_____________________________________
Part 3 TYPE OF PERMIT APPLICATION Part 4 OTHER REVIEWS AND PERMITS
Land Use (e.g., Subdivision / Short Subd.)
Building (e.g., M/F / Commercial / SFR)
Grading
Right-of-Way Use
Other _______________________
DFW HPA
COE 404
DOE Dam Safety
FEMA Floodplain
COE Wetlands
Other ________
Shoreline
Management
Structural
Rockery/Vault/_____
ESA Section 7
Part 5 PLAN AND REPORT INFORMATION
Technical Information Report Site Improvement Plan (Engr. Plans)
Type of Drainage Review
(check one):
Date (include revision
dates):
Date of Final:
Full
Targeted
Simplified
Large Project
Directed
__________________
__________________
__________________
Plan Type (check
one):
Date (include revision
dates):
Date of Final:
Full
Modified
Simplified
__________________
__________________
__________________
Renton School District
253-383-2422
7812 S 124th Street
Renton, WA 98178
James Daley
AHBL Inc.
253-383-2422
Talbot Hill Elementary School
23 N
5 E
30
2300 Talbot Rd S
Renton, WA 98055
X
X
April 2024
X
Revised June 2024
April 2024
Revised June 2024
REFERENCE 8: PLAN REVIEW FORMS AND WORKSHEET
TECHNICAL INFORMATION REPORT (TIR) WORKSHEET
6/22/2022 2022 City of Renton Surface Water Design Manual 8-A-2
Part 6 SWDM ADJUSTMENT APPROVALS
Type (circle one): Standard / Blanket
Description: (include conditions in TIR Section 2)
____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
Approved Adjustment No. ______________________ Date of Approval: _______________________
Part 7 MONITORING REQUIREMENTS
Monitoring Required: Yes / No
Start Date: _______________________
Completion Date: _______________________
Describe: _________________________________
_________________________________________
_________________________________________
Re: SWDM Adjustment No. ________________
Part 8 SITE COMMUNITY AND DRAINAGE BASIN
Community Plan: ____________________________________________________________________
Special District Overlays: ______________________________________________________________
Drainage Basin: _____________________________________________________________________
Stormwater Requirements: _____________________________________________________________
Part 9 ONSITE AND ADJACENT SENSITIVE AREAS
River/Stream ________________________
Lake ______________________________
Wetlands ____________________________
Closed Depression ____________________
Floodplain ___________________________
Other _______________________________
_______________________________
Steep Slope __________________________
Erosion Hazard _______________________
Landslide Hazard ______________________
Coal Mine Hazard ______________________
Seismic Hazard _______________________
Habitat Protection ______________________
_____________________________________
Cedar River - Lake Washington
south/southwest portion of siteX
south/southwest portion of site
north/northeast portion of site
X
X
REFERENCE 8-A: TECHNICAL INFORMATION REPORT (TIR) WORKSHEET
TECHNICAL INFORMATION REPORT (TIR) WORKSHEET
2022 City of Renton Surface Water Design Manual 6/22/2022
Ref 8-A-3
Part 10 SOILS
Soil Type
______________________
______________________
______________________
______________________
Slopes
________________________
________________________
________________________
________________________
Erosion Potential
_________________________
_________________________
_________________________
_________________________
High Groundwater Table (within 5 feet)
Other ________________________________
Sole Source Aquifer
Seeps/Springs
Additional Sheets Attached
Part 11 DRAINAGE DESIGN LIMITATIONS
REFERENCE
Core 2 – Offsite Analysis_________________
Sensitive/Critical Areas__________________
SEPA________________________________
LID Infeasibility________________________
Other________________________________
_____________________________________
LIMITATION / SITE CONSTRAINT
_______________________________________
_______________________________________
_______________________________________
_______________________________________
_______________________________________
_______________________________________
Additional Sheets Attached
Part 12 TIR SUMMARY SHEET (provide one TIR Summary Sheet
per Threshold Discharge Area)
Threshold Discharge Area:
(name or description)
Core Requirements (all 9 apply):
Discharge at Natural Location Number of Natural Discharge Locations:
Offsite Analysis Level: 1 / 2 / 3 dated:__________________
Flow Control (include facility
summary sheet)
Standard: _______________________________
or Exemption Number: ____________
Conveyance System Spill containment located at: _____________________________
Erosion and Sediment Control /
Construction Stormwater Pollution
Prevention
CSWPP/CESCL/ESC Site Supervisor: _____________________
Contact Phone: _________________________
After Hours Phone: _________________________
Maintenance and Operation Responsibility (circle one): Private / Public
If Private, Maintenance Log Required: Yes / No
Financial Guarantees and Liability Provided: Yes / No
Alderwood gravelly sandy loam 8 - 15 %None
1
Not Required
Not Required
1 & 2
N/A
To be determined
Beausite gravelly sandy loam 6 - 15 %
REFERENCE 8: PLAN REVIEW FORMS AND WORKSHEET
TECHNICAL INFORMATION REPORT (TIR) WORKSHEET
6/22/2022 2022 City of Renton Surface Water Design Manual 8-A-4
Part 12 TIR SUMMARY SHEET (provide one TIR Summary Sheet
per Threshold Discharge Area)
Water Quality (include facility
summary sheet)
Type (circle one): Basic / Sens. Lake / Enhanced Basic / Bog
or Exemption No. _______________________
On-site BMPs Describe:
Special Requirements (as applicable):
Area Specific Drainage
Requirements
Type: SDO / MDP / BP / Shared Fac. / None
Name: ________________________
Floodplain/Floodway Delineation Type (circle one): Major / Minor / Exemption / None
100-year Base Flood Elevation (or range): _______________
Datum:
Flood Protection Facilities Describe:
Source Control
(commercial / industrial land use)
Describe land use:
Describe any structural controls:
Oil Control High-Use Site: Yes / No
Treatment BMP: _________________________________
Maintenance Agreement: Yes / No
with whom? _____________________________________
Other Drainage Structures
Describe:
1
Catch Basin Inlet Protection
None Required
Commercial
None
None Required
None
REFERENCE 8-A: TECHNICAL INFORMATION REPORT (TIR) WORKSHEET
TECHNICAL INFORMATION REPORT (TIR) WORKSHEET
2022 City of Renton Surface Water Design Manual 6/22/2022
Ref 8-A-5
Part 13 EROSION AND SEDIMENT CONTROL REQUIREMENTS
MINIMUM ESC REQUIREMENTS
DURING CONSTRUCTION
Clearing Limits
Cover Measures
Perimeter Protection
Traffic Area Stabilization
Sediment Retention
Surface Water Collection
Dewatering Control
Dust Control
Flow Control
Control Pollutants
Protect Existing and Proposed
BMPs/Facilities
Maintain Protective BMPs / Manage
Project
MINIMUM ESC REQUIREMENTS
AFTER CONSTRUCTION
Stabilize exposed surfaces
Remove and restore Temporary ESC Facilities
Clean and remove all silt and debris, ensure
operation of Permanent BMPs/Facilities, restore
operation of BMPs/Facilities as necessary
Flag limits of sensitive areas and open space
preservation areas
Other _______________________
Part 14 STORMWATER FACILITY DESCRIPTIONS (Note: Include Facility Summary and Sketch)
Flow Control Description Water Quality Description On-site BMPs Description
Detention
Infiltration
Regional
Facility
Shared
Facility
Other
_____________
_____________
_____________
_____________
_____________
_____________
_____________
_____________
_____________
_____________
_____________
Vegetated
Flowpath
Wetpool
Filtration
Oil Control
Spill Control
Other
_____________
_____________
_____________
_____________
_____________
_____________
_____________
_____________
_____________
_____________
_____________
Full Dispersion
Full Infiltration
Limited Infiltration
Rain Gardens
Bioretention
Permeable
Pavement
Basic Dispersion
Soil Amendment
Perforated Pipe
Connection
Other
_____________
_____________
_____________
_____________
_____________
_____________
_____________
_____________
_____________
_____________
_____________
X
X
X
X
X
X
X
None Required None Required
REFERENCE 8: PLAN REVIEW FORMS AND WORKSHEET
TECHNICAL INFORMATION REPORT (TIR) WORKSHEET
6/22/2022 2022 City of Renton Surface Water Design Manual 8-A-6
Part 15 EASEMENTS/TRACTS Part 16 STRUCTURAL ANALYSIS
Drainage Easement
Covenant
Native Growth Protection Covenant
Tract
Other ____________________________
Cast in Place Vault
Retaining Wall
Rockery > 4′ High
Structural on Steep Slope
Other _______________________________
Part 17 SIGNATURE OF PROFESSIONAL ENGINEER
I, or a civil engineer under my supervision, have visited the site. Actual site conditions as observed were
incorporated into this worksheet and the attached Technical Information Report. To the best of my
knowledge the information provided here is accurate.
____________________________________________________________________________________
Signed/Date
X XNone None
June 20, 2024
2215 North 30th Street
Suite 300
Tacoma, WA 98403
253.383.2422 TEL
253.383.2572 FAX
Talbot Hill Elementary School
Vicinity Map
Figure
1-2
N
Project Site
N
Project
Site
Talbot Hill
Elementary School
Talbot Hill
Elementary School
Talbot Hill
Elementary School
Talbot Hill
Elementary School
Talbot Hill
Elementary School
Talbot Hill
Elementary School
Talbot Hill
Elementary School