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Home My WebLink AboutSite Certifications - 11/29/2016Wes Lamarque 11/29/2016 Grading/Stormwater Certification Accepted (Certificate of Occupancy Released) Accepted by: Date: Escrow was held for CO and is now released we WQ-001 DRAINAGE PLAN Total Site Area: 77.3 acres Total Area Tributary To Water QualityBMPs: 80.2 acres 1730 Appleton, WI Orange County, CA Pittsburgh, PA 16745 W. Bluemound Road, Brookfield, WI 53005-5938 262-781-1000 Fax 262-781-8466, www.rasmithnational.com R.A. Smith National Beyond Surveying and Engineering FOOTHILLS REDEVELOPMENT LOCATED IN THE SOUTHWEST QUARTER OF SECTION 25, TOWNSHIP 7 NORTH, RANGE 69 WEST OF THE 6TH PRINCIPAL MERIDIAN, CITY OF FORT COLLINS, COUNTY OF LARIMER, STATE OF COLORADO FOOTHILLS REVELOPMENT PLANNING AREA 2 FINAL PLAN 04/25/14 MYLARS THIS RAIN GARDEN ONLY TO BE BUILT WITH PA3 P: \ 3 1 2 0 1 1 5 \ D w g \ C o n s t r u c t i o n \ W Q 0 0 1 D 8 0 . d w g , O v e r a l l W Q , 1 2 / 4 / 2 0 1 4 3 : 4 5 : 1 1 P M , s j d /15 Page 1 DURING CONSTRUCTION INSPECTION CHECKLIST To be completed by Construction Superintendent This checklist is to be completed during construction and included with the Overall Site and Drainage Certification. Use “Yes” for items completed as described. Use “N/A” for items that are not applicable to the site being certified. If any blanks are “No,” attach an explanation referencing the item number below. I. Compaction A. All berms and embankments meet the compaction requirements as specified in the project geotechnical report or comply with the City’s standard, which is “soils should be compacted within a moisture content range of 2% below to 2% above optimum moisture content and compacted to 95% of the Maximum Standard Proctor Density (ASTM D698).” Compaction requires verification during construction. Provide testing log from contractor/engineer. II. Storm Drain Pipe Installation Requirements A. The pipe trenches have been compacted in accordance with Section 02225-3.07.A.1. of the Fort Collins Development Construction Standards (e.g., the trenches in the roadways are to be 95% of maximum density and all other areas are to be at 90%, both in accordance with ASTM D698). III.Riprap - FCSCM Vol.1, Ch.7, Sec.4.4.4.3 A. The riprap bedding is a granular bedding of the gradation and thickness indicated on the approved construction plans. B. A filter fabric was installed instead of granular bedding and is the material shown on the approved construction plans or was an approved equal. Provide documentation for an approved equal. C. The riprap is the gradation shown on the approved construction plans with a D50 of . D. The riprap thickness is as shown on the approved construction plans and extends to the horizontal limits shown. E. The riprap is buried to the depth indicated on the approved construction plans. (A minimum of 6 inches of soil is required.) IV.Permanent Erosion Control Fabric - FCSCM Vol.1, Ch.7 A. All fabric was installed per manufacturer’s specifications. V.Certification of Other Permanent BMPs - FCSCM Vol.2, Ch.8, Sec.2 & FCSCM Vol.2, Ch.12 A. All cut-off walls have been installed in accordance with the approved construction plans. (Cut-off walls are required for irrigation ditch crossings of storm drain pipes and at the end of flared end sections.) /15 Page 2 Permeable Interlocking Concrete Pavers Item/Activity Yes No N/A Documentation/Submittal Requirements Excavation Post-excavation infiltration rates are consistent with design infiltration capacity (for “full or partial infiltration” designs) Impermeable Liner Impermeable liner meets design specifications Impermeable liner attached to concrete perimeter wall Impermeable liner is not exposed Any penetrations of the impermeable liner have been sealed and checked for water-tightness. Concrete Cut-Off Wall Meets specifications for: -Dimensions -Reinforcement -Footings Underdrain System Underdrain pipe is per design specifications At least one cleanout is provided per underdrain lateral Cleanout pipe is not perforated Cleanout covers are installed and watertight Underdrain is NOT wrapped in geotextile fabric Underdrain orifice plate installed at outlet structure Underdrain integrity tested after backfilling using TV and/or water test Aggregate Base coarse (e.g.,#2/4) has 90% fractured faces Bedding coarse (e.g.,#89) is thoroughly washed Sub-base materials are installed and compacted according to manufacturer’s specifications Protection During Construction PICP area is protected from construction site sediment, including runoff from the upstream catchment and construction equipment traffic Close Out Upstream catchment is stabilized prior to diverting runoff into PICP system /15 Page 3 Bioretention Cells Item/Activity Yes No N/A Documentation/Submittal Requirements Excavation Heavy equipment did not travel over bioretention cell during excavation Bottom of cell was “ripped” after excavation Photograph before/after “ripping” Bottom of cell is flat and level Photograph Excavated area is protected/surrounded by sediment/runoff control BMPs during construction Photograph Inlet Overflow inlet elevation is set above bioretention media per plan (typically 12 inches) Overflow inlet invert elevation is at least 3 inches below containment wall/berm (to direct overflow into inlet) Measure/record distance between inlet and top of containment wall/berm Upstream catchment drains to inlet Forebay Forebay is installed according to design specifications Forebay has flat, concrete bottom Outlet Structure/Overflow Outlet structure/overflow elevation is confirmed Measure/record distance from overflow to top of media filter Impermeable Liner Impermeable liner meets design specifications Impermeable liner attached to concrete perimeter wall Impermeable liner is not exposed Underdrain System Underdrain pipe is per design specifications At least one cleanout is provided per underdrain lateral Cleanout pipe is not perforated Cleanout covers are installed and watertight Underdrain is NOT wrapped in geotextile fabric Underdrain orifice plate installed at outlet structure Underdrain integrity tested after backfilling using TV and/or water test /15 Page 4 Filter Media Filter media composition is per design specifications Filter media was “machine mixed” by supplier prior to delivery Filter media installed flat and level Other Structural Components Containment wall/berm is continuous and level Landscaping Final landscaping does NOT include sod Final landscaping (wood/rock mulch) is flat and level Vegetation is planted according to landscape design specifications Verify that weed barrier is not installed Temporary irrigation installed If N/A, then verify that permanent irrigation is installed to establish/maintain vegetation Close Out Upstream catchment stabilized prior to diverting runoff into bioretention cell Signature: Name: Title: Email: Phone: Company: Address: Flatirons, Inc. Surveying, Engineering & Geomatics www.FlatironsInc.com 16406 /15 Page 1 DURING CONSTRUCTION INSPECTION CHECKLIST To be completed by Construction Superintendent This checklist is to be completed during construction and included with the Overall Site and Drainage Certification. Use “Yes” for items completed as described. Use “N/A” for items that are not applicable to the site being certified. If any blanks are “No,” attach an explanation referencing the item number below. I. Compaction A. All berms and embankments meet the compaction requirements as specified in the project geotechnical report or comply with the City’s standard, which is “soils should be compacted within a moisture content range of 2% below to 2% above optimum moisture content and compacted to 95% of the Maximum Standard Proctor Density (ASTM D698).” Compaction requires verification during construction. Provide testing log from contractor/engineer. II. Storm Drain Pipe Installation Requirements A. The pipe trenches have been compacted in accordance with Section 02225-3.07.A.1. of the Fort Collins Development Construction Standards (e.g., the trenches in the roadways are to be 95% of maximum density and all other areas are to be at 90%, both in accordance with ASTM D698). III.Riprap - FCSCM Vol.1, Ch.7, Sec.4.4.4.3 A. The riprap bedding is a granular bedding of the gradation and thickness indicated on the approved construction plans. B. A filter fabric was installed instead of granular bedding and is the material shown on the approved construction plans or was an approved equal. Provide documentation for an approved equal. C. The riprap is the gradation shown on the approved construction plans with a D50 of . D. The riprap thickness is as shown on the approved construction plans and extends to the horizontal limits shown. E. The riprap is buried to the depth indicated on the approved construction plans. (A minimum of 6 inches of soil is required.) IV.Permanent Erosion Control Fabric - FCSCM Vol.1, Ch.7 A. All fabric was installed per manufacturer’s specifications. V.Certification of Other Permanent BMPs - FCSCM Vol.2, Ch.8, Sec.2 & FCSCM Vol.2, Ch.12 A. All cut-off walls have been installed in accordance with the approved construction plans. (Cut-off walls are required for irrigation ditch crossings of storm drain pipes and at the end of flared end sections.) /15 Page 2 Permeable Interlocking Concrete Pavers Item/Activity Yes No N/A Documentation/Submittal Requirements Excavation Post-excavation infiltration rates are consistent with design infiltration capacity (for “full or partial infiltration” designs) Impermeable Liner Impermeable liner meets design specifications Impermeable liner attached to concrete perimeter wall Impermeable liner is not exposed Any penetrations of the impermeable liner have been sealed and checked for water-tightness. Concrete Cut-Off Wall Meets specifications for: -Dimensions -Reinforcement -Footings Underdrain System Underdrain pipe is per design specifications At least one cleanout is provided per underdrain lateral Cleanout pipe is not perforated Cleanout covers are installed and watertight Underdrain is NOT wrapped in geotextile fabric Underdrain orifice plate installed at outlet structure Underdrain integrity tested after backfilling using TV and/or water test Aggregate Base coarse (e.g.,#2/4) has 90% fractured faces Bedding coarse (e.g.,#89) is thoroughly washed Sub-base materials are installed and compacted according to manufacturer’s specifications Protection During Construction PICP area is protected from construction site sediment, including runoff from the upstream catchment and construction equipment traffic Close Out Upstream catchment is stabilized prior to diverting runoff into PICP system /15 Page 3 Bioretention Cells Item/Activity Yes No N/A Documentation/Submittal Requirements Excavation Heavy equipment did not travel over bioretention cell during excavation Bottom of cell was “ripped” after excavation Photograph before/after “ripping” Bottom of cell is flat and level Photograph Excavated area is protected/surrounded by sediment/runoff control BMPs during construction Photograph Inlet Overflow inlet elevation is set above bioretention media per plan (typically 12 inches) Overflow inlet invert elevation is at least 3 inches below containment wall/berm (to direct overflow into inlet) Measure/record distance between inlet and top of containment wall/berm Upstream catchment drains to inlet Forebay Forebay is installed according to design specifications Forebay has flat, concrete bottom Outlet Structure/Overflow Outlet structure/overflow elevation is confirmed Measure/record distance from overflow to top of media filter Impermeable Liner Impermeable liner meets design specifications Impermeable liner attached to concrete perimeter wall Impermeable liner is not exposed Underdrain System Underdrain pipe is per design specifications At least one cleanout is provided per underdrain lateral Cleanout pipe is not perforated Cleanout covers are installed and watertight Underdrain is NOT wrapped in geotextile fabric Underdrain orifice plate installed at outlet structure Underdrain integrity tested after backfilling using TV and/or water test /15 Page 4 Filter Media Filter media composition is per design specifications Filter media was “machine mixed” by supplier prior to delivery Filter media installed flat and level Other Structural Components Containment wall/berm is continuous and level Landscaping Final landscaping does NOT include sod Final landscaping (wood/rock mulch) is flat and level Vegetation is planted according to landscape design specifications Verify that weed barrier is not installed Temporary irrigation installed If N/A, then verify that permanent irrigation is installed to establish/maintain vegetation Close Out Upstream catchment stabilized prior to diverting runoff into bioretention cell Signature: Name: Title: Email: Phone: Company: Address: /15 Page 1 DURING CONSTRUCTION INSPECTION CHECKLIST To be completed by Construction Superintendent This checklist is to be completed during construction and included with the Overall Site and Drainage Certification. Use “Yes” for items completed as described. Use “N/A” for items that are not applicable to the site being certified. If any blanks are “No,” attach an explanation referencing the item number below. I. Compaction A. All berms and embankments meet the compaction requirements as specified in the project geotechnical report or comply with the City’s standard, which is “soils should be compacted within a moisture content range of 2% below to 2% above optimum moisture content and compacted to 95% of the Maximum Standard Proctor Density (ASTM D698).” Compaction requires verification during construction. Provide testing log from contractor/engineer. II. Storm Drain Pipe Installation Requirements A. The pipe trenches have been compacted in accordance with Section 02225-3.07.A.1. of the Fort Collins Development Construction Standards (e.g., the trenches in the roadways are to be 95% of maximum density and all other areas are to be at 90%, both in accordance with ASTM D698). III.Riprap - FCSCM Vol.1, Ch.7, Sec.4.4.4.3 A. The riprap bedding is a granular bedding of the gradation and thickness indicated on the approved construction plans. B. A filter fabric was installed instead of granular bedding and is the material shown on the approved construction plans or was an approved equal. Provide documentation for an approved equal. C. The riprap is the gradation shown on the approved construction plans with a D50 of . D. The riprap thickness is as shown on the approved construction plans and extends to the horizontal limits shown. E. The riprap is buried to the depth indicated on the approved construction plans. (A minimum of 6 inches of soil is required.) IV.Permanent Erosion Control Fabric - FCSCM Vol.1, Ch.7 A. All fabric was installed per manufacturer’s specifications. V.Certification of Other Permanent BMPs - FCSCM Vol.2, Ch.8, Sec.2 & FCSCM Vol.2, Ch.12 A. All cut-off walls have been installed in accordance with the approved construction plans. (Cut-off walls are required for irrigation ditch crossings of storm drain pipes and at the end of flared end sections.) Rain Garden #28 /15 Page 2 Permeable Interlocking Concrete Pavers Item/Activity Yes No N/A Documentation/Submittal Requirements Excavation Post-excavation infiltration rates are consistent with design infiltration capacity (for “full or partial infiltration” designs) Impermeable Liner Impermeable liner meets design specifications Impermeable liner attached to concrete perimeter wall Impermeable liner is not exposed Any penetrations of the impermeable liner have been sealed and checked for water-tightness. Concrete Cut-Off Wall Meets specifications for: -Dimensions -Reinforcement -Footings Underdrain System Underdrain pipe is per design specifications At least one cleanout is provided per underdrain lateral Cleanout pipe is not perforated Cleanout covers are installed and watertight Underdrain is NOT wrapped in geotextile fabric Underdrain orifice plate installed at outlet structure Underdrain integrity tested after backfilling using TV and/or water test Aggregate Base coarse (e.g.,#2/4) has 90% fractured faces Bedding coarse (e.g.,#89) is thoroughly washed Sub-base materials are installed and compacted according to manufacturer’s specifications Protection During Construction PICP area is protected from construction site sediment, including runoff from the upstream catchment and construction equipment traffic Close Out Upstream catchment is stabilized prior to diverting runoff into PICP system /15 Page 3 Bioretention Cells Item/Activity Yes No N/A Documentation/Submittal Requirements Excavation Heavy equipment did not travel over bioretention cell during excavation Bottom of cell was “ripped” after excavation Photograph before/after “ripping” Bottom of cell is flat and level Photograph Excavated area is protected/surrounded by sediment/runoff control BMPs during construction Photograph Inlet Overflow inlet elevation is set above bioretention media per plan (typically 12 inches) Overflow inlet invert elevation is at least 3 inches below containment wall/berm (to direct overflow into inlet) Measure/record distance between inlet and top of containment wall/berm Upstream catchment drains to inlet Forebay Forebay is installed according to design specifications Forebay has flat, concrete bottom Outlet Structure/Overflow Outlet structure/overflow elevation is confirmed Measure/record distance from overflow to top of media filter Impermeable Liner Impermeable liner meets design specifications Impermeable liner attached to concrete perimeter wall Impermeable liner is not exposed Underdrain System Underdrain pipe is per design specifications At least one cleanout is provided per underdrain lateral Cleanout pipe is not perforated Cleanout covers are installed and watertight Underdrain is NOT wrapped in geotextile fabric Underdrain orifice plate installed at outlet structure Underdrain integrity tested after backfilling using TV and/or water test /15 Page 4 Filter Media Filter media composition is per design specifications Filter media was “machine mixed” by supplier prior to delivery Filter media installed flat and level Other Structural Components Containment wall/berm is continuous and level Landscaping Final landscaping does NOT include sod Final landscaping (wood/rock mulch) is flat and level Vegetation is planted according to landscape design specifications Verify that weed barrier is not installed Temporary irrigation installed If N/A, then verify that permanent irrigation is installed to establish/maintain vegetation Close Out Upstream catchment stabilized prior to diverting runoff into bioretention cell Signature: Name: Title: Email: Phone: Company: Address: /15 Page 1 DURING CONSTRUCTION INSPECTION CHECKLIST To be completed by Construction Superintendent This checklist is to be completed during construction and included with the Overall Site and Drainage Certification. Use “Yes” for items completed as described. Use “N/A” for items that are not applicable to the site being certified. If any blanks are “No,” attach an explanation referencing the item number below. I. Compaction A. All berms and embankments meet the compaction requirements as specified in the project geotechnical report or comply with the City’s standard, which is “soils should be compacted within a moisture content range of 2% below to 2% above optimum moisture content and compacted to 95% of the Maximum Standard Proctor Density (ASTM D698).” Compaction requires verification during construction. Provide testing log from contractor/engineer. II. Storm Drain Pipe Installation Requirements A. The pipe trenches have been compacted in accordance with Section 02225-3.07.A.1. of the Fort Collins Development Construction Standards (e.g., the trenches in the roadways are to be 95% of maximum density and all other areas are to be at 90%, both in accordance with ASTM D698). III.Riprap - FCSCM Vol.1, Ch.7, Sec.4.4.4.3 A. The riprap bedding is a granular bedding of the gradation and thickness indicated on the approved construction plans. B. A filter fabric was installed instead of granular bedding and is the material shown on the approved construction plans or was an approved equal. Provide documentation for an approved equal. C. The riprap is the gradation shown on the approved construction plans with a D50 of . D. The riprap thickness is as shown on the approved construction plans and extends to the horizontal limits shown. E. The riprap is buried to the depth indicated on the approved construction plans. (A minimum of 6 inches of soil is required.) IV.Permanent Erosion Control Fabric - FCSCM Vol.1, Ch.7 A. All fabric was installed per manufacturer’s specifications. V.Certification of Other Permanent BMPs - FCSCM Vol.2, Ch.8, Sec.2 & FCSCM Vol.2, Ch.12 A. All cut-off walls have been installed in accordance with the approved construction plans. (Cut-off walls are required for irrigation ditch crossings of storm drain pipes and at the end of flared end sections.) /15 Page 2 Permeable Interlocking Concrete Pavers Item/Activity Yes No N/A Documentation/Submittal Requirements Excavation Post-excavation infiltration rates are consistent with design infiltration capacity (for “full or partial infiltration” designs) Impermeable Liner Impermeable liner meets design specifications Impermeable liner attached to concrete perimeter wall Impermeable liner is not exposed Any penetrations of the impermeable liner have been sealed and checked for water-tightness. Concrete Cut-Off Wall Meets specifications for: -Dimensions -Reinforcement -Footings Underdrain System Underdrain pipe is per design specifications At least one cleanout is provided per underdrain lateral Cleanout pipe is not perforated Cleanout covers are installed and watertight Underdrain is NOT wrapped in geotextile fabric Underdrain orifice plate installed at outlet structure Underdrain integrity tested after backfilling using TV and/or water test Aggregate Base coarse (e.g.,#2/4) has 90% fractured faces Bedding coarse (e.g.,#89) is thoroughly washed Sub-base materials are installed and compacted according to manufacturer’s specifications Protection During Construction PICP area is protected from construction site sediment, including runoff from the upstream catchment and construction equipment traffic Close Out Upstream catchment is stabilized prior to diverting runoff into PICP system /15 Page 3 Bioretention Cells Item/Activity Yes No N/A Documentation/Submittal Requirements Excavation Heavy equipment did not travel over bioretention cell during excavation Bottom of cell was “ripped” after excavation Photograph before/after “ripping” Bottom of cell is flat and level Photograph Excavated area is protected/surrounded by sediment/runoff control BMPs during construction Photograph Inlet Overflow inlet elevation is set above bioretention media per plan (typically 12 inches) Overflow inlet invert elevation is at least 3 inches below containment wall/berm (to direct overflow into inlet) Measure/record distance between inlet and top of containment wall/berm Upstream catchment drains to inlet Forebay Forebay is installed according to design specifications Forebay has flat, concrete bottom Outlet Structure/Overflow Outlet structure/overflow elevation is confirmed Measure/record distance from overflow to top of media filter Impermeable Liner Impermeable liner meets design specifications Impermeable liner attached to concrete perimeter wall Impermeable liner is not exposed Underdrain System Underdrain pipe is per design specifications At least one cleanout is provided per underdrain lateral Cleanout pipe is not perforated Cleanout covers are installed and watertight Underdrain is NOT wrapped in geotextile fabric Underdrain orifice plate installed at outlet structure Underdrain integrity tested after backfilling using TV and/or water test /15 Page 4 Filter Media Filter media composition is per design specifications Filter media was “machine mixed” by supplier prior to delivery Filter media installed flat and level Other Structural Components Containment wall/berm is continuous and level Landscaping Final landscaping does NOT include sod Final landscaping (wood/rock mulch) is flat and level Vegetation is planted according to landscape design specifications Verify that weed barrier is not installed Temporary irrigation installed If N/A, then verify that permanent irrigation is installed to establish/maintain vegetation Close Out Upstream catchment stabilized prior to diverting runoff into bioretention cell Signature: Name: Title: Email: Phone: Company: Address: /15 Page 1 DURING CONSTRUCTION INSPECTION CHECKLIST To be completed by Construction Superintendent This checklist is to be completed during construction and included with the Overall Site and Drainage Certification. Use “Yes” for items completed as described. Use “N/A” for items that are not applicable to the site being certified. If any blanks are “No,” attach an explanation referencing the item number below. I. Compaction A. All berms and embankments meet the compaction requirements as specified in the project geotechnical report or comply with the City’s standard, which is “soils should be compacted within a moisture content range of 2% below to 2% above optimum moisture content and compacted to 95% of the Maximum Standard Proctor Density (ASTM D698).” Compaction requires verification during construction. Provide testing log from contractor/engineer. II. Storm Drain Pipe Installation Requirements A. The pipe trenches have been compacted in accordance with Section 02225-3.07.A.1. of the Fort Collins Development Construction Standards (e.g., the trenches in the roadways are to be 95% of maximum density and all other areas are to be at 90%, both in accordance with ASTM D698). III.Riprap - FCSCM Vol.1, Ch.7, Sec.4.4.4.3 A. The riprap bedding is a granular bedding of the gradation and thickness indicated on the approved construction plans. B. A filter fabric was installed instead of granular bedding and is the material shown on the approved construction plans or was an approved equal. Provide documentation for an approved equal. C. The riprap is the gradation shown on the approved construction plans with a D50 of . D. The riprap thickness is as shown on the approved construction plans and extends to the horizontal limits shown. E. The riprap is buried to the depth indicated on the approved construction plans. (A minimum of 6 inches of soil is required.) IV.Permanent Erosion Control Fabric - FCSCM Vol.1, Ch.7 A. All fabric was installed per manufacturer’s specifications. V.Certification of Other Permanent BMPs - FCSCM Vol.2, Ch.8, Sec.2 & FCSCM Vol.2, Ch.12 A. All cut-off walls have been installed in accordance with the approved construction plans. (Cut-off walls are required for irrigation ditch crossings of storm drain pipes and at the end of flared end sections.) /15 Page 2 Permeable Interlocking Concrete Pavers Item/Activity Yes No N/A Documentation/Submittal Requirements Excavation Post-excavation infiltration rates are consistent with design infiltration capacity (for “full or partial infiltration” designs) Impermeable Liner Impermeable liner meets design specifications Impermeable liner attached to concrete perimeter wall Impermeable liner is not exposed Any penetrations of the impermeable liner have been sealed and checked for water-tightness. Concrete Cut-Off Wall Meets specifications for: -Dimensions -Reinforcement -Footings Underdrain System Underdrain pipe is per design specifications At least one cleanout is provided per underdrain lateral Cleanout pipe is not perforated Cleanout covers are installed and watertight Underdrain is NOT wrapped in geotextile fabric Underdrain orifice plate installed at outlet structure Underdrain integrity tested after backfilling using TV and/or water test Aggregate Base coarse (e.g.,#2/4) has 90% fractured faces Bedding coarse (e.g.,#89) is thoroughly washed Sub-base materials are installed and compacted according to manufacturer’s specifications Protection During Construction PICP area is protected from construction site sediment, including runoff from the upstream catchment and construction equipment traffic Close Out Upstream catchment is stabilized prior to diverting runoff into PICP system /15 Page 3 Bioretention Cells Item/Activity Yes No N/A Documentation/Submittal Requirements Excavation Heavy equipment did not travel over bioretention cell during excavation Bottom of cell was “ripped” after excavation Photograph before/after “ripping” Bottom of cell is flat and level Photograph Excavated area is protected/surrounded by sediment/runoff control BMPs during construction Photograph Inlet Overflow inlet elevation is set above bioretention media per plan (typically 12 inches) Overflow inlet invert elevation is at least 3 inches below containment wall/berm (to direct overflow into inlet) Measure/record distance between inlet and top of containment wall/berm Upstream catchment drains to inlet Forebay Forebay is installed according to design specifications Forebay has flat, concrete bottom Outlet Structure/Overflow Outlet structure/overflow elevation is confirmed Measure/record distance from overflow to top of media filter Impermeable Liner Impermeable liner meets design specifications Impermeable liner attached to concrete perimeter wall Impermeable liner is not exposed Underdrain System Underdrain pipe is per design specifications At least one cleanout is provided per underdrain lateral Cleanout pipe is not perforated Cleanout covers are installed and watertight Underdrain is NOT wrapped in geotextile fabric Underdrain orifice plate installed at outlet structure Underdrain integrity tested after backfilling using TV and/or water test /15 Page 4 Filter Media Filter media composition is per design specifications Filter media was “machine mixed” by supplier prior to delivery Filter media installed flat and level Other Structural Components Containment wall/berm is continuous and level Landscaping Final landscaping does NOT include sod Final landscaping (wood/rock mulch) is flat and level Vegetation is planted according to landscape design specifications Verify that weed barrier is not installed Temporary irrigation installed If N/A, then verify that permanent irrigation is installed to establish/maintain vegetation Close Out Upstream catchment stabilized prior to diverting runoff into bioretention cell Signature: Name: Title: Email: Phone: Company: Address: /15 Page 1 DURING CONSTRUCTION INSPECTION CHECKLIST To be completed by Construction Superintendent This checklist is to be completed during construction and included with the Overall Site and Drainage Certification. Use “Yes” for items completed as described. Use “N/A” for items that are not applicable to the site being certified. If any blanks are “No,” attach an explanation referencing the item number below. I. Compaction A. All berms and embankments meet the compaction requirements as specified in the project geotechnical report or comply with the City’s standard, which is “soils should be compacted within a moisture content range of 2% below to 2% above optimum moisture content and compacted to 95% of the Maximum Standard Proctor Density (ASTM D698).” Compaction requires verification during construction. Provide testing log from contractor/engineer. II. Storm Drain Pipe Installation Requirements A. The pipe trenches have been compacted in accordance with Section 02225-3.07.A.1. of the Fort Collins Development Construction Standards (e.g., the trenches in the roadways are to be 95% of maximum density and all other areas are to be at 90%, both in accordance with ASTM D698). III.Riprap - FCSCM Vol.1, Ch.7, Sec.4.4.4.3 A. The riprap bedding is a granular bedding of the gradation and thickness indicated on the approved construction plans. B. A filter fabric was installed instead of granular bedding and is the material shown on the approved construction plans or was an approved equal. Provide documentation for an approved equal. C. The riprap is the gradation shown on the approved construction plans with a D50 of . D. The riprap thickness is as shown on the approved construction plans and extends to the horizontal limits shown. E. The riprap is buried to the depth indicated on the approved construction plans. (A minimum of 6 inches of soil is required.) IV.Permanent Erosion Control Fabric - FCSCM Vol.1, Ch.7 A. All fabric was installed per manufacturer’s specifications. V.Certification of Other Permanent BMPs - FCSCM Vol.2, Ch.8, Sec.2 & FCSCM Vol.2, Ch.12 A. All cut-off walls have been installed in accordance with the approved construction plans. (Cut-off walls are required for irrigation ditch crossings of storm drain pipes and at the end of flared end sections.) /15 Page 2 Permeable Interlocking Concrete Pavers Item/Activity Yes No N/A Documentation/Submittal Requirements Excavation Post-excavation infiltration rates are consistent with design infiltration capacity (for “full or partial infiltration” designs) Impermeable Liner Impermeable liner meets design specifications Impermeable liner attached to concrete perimeter wall Impermeable liner is not exposed Any penetrations of the impermeable liner have been sealed and checked for water-tightness. Concrete Cut-Off Wall Meets specifications for: -Dimensions -Reinforcement -Footings Underdrain System Underdrain pipe is per design specifications At least one cleanout is provided per underdrain lateral Cleanout pipe is not perforated Cleanout covers are installed and watertight Underdrain is NOT wrapped in geotextile fabric Underdrain orifice plate installed at outlet structure Underdrain integrity tested after backfilling using TV and/or water test Aggregate Base coarse (e.g.,#2/4) has 90% fractured faces Bedding coarse (e.g.,#89) is thoroughly washed Sub-base materials are installed and compacted according to manufacturer’s specifications Protection During Construction PICP area is protected from construction site sediment, including runoff from the upstream catchment and construction equipment traffic Close Out Upstream catchment is stabilized prior to diverting runoff into PICP system /15 Page 3 Bioretention Cells Item/Activity Yes No N/A Documentation/Submittal Requirements Excavation Heavy equipment did not travel over bioretention cell during excavation Bottom of cell was “ripped” after excavation Photograph before/after “ripping” Bottom of cell is flat and level Photograph Excavated area is protected/surrounded by sediment/runoff control BMPs during construction Photograph Inlet Overflow inlet elevation is set above bioretention media per plan (typically 12 inches) Overflow inlet invert elevation is at least 3 inches below containment wall/berm (to direct overflow into inlet) Measure/record distance between inlet and top of containment wall/berm Upstream catchment drains to inlet Forebay Forebay is installed according to design specifications Forebay has flat, concrete bottom Outlet Structure/Overflow Outlet structure/overflow elevation is confirmed Measure/record distance from overflow to top of media filter Impermeable Liner Impermeable liner meets design specifications Impermeable liner attached to concrete perimeter wall Impermeable liner is not exposed Underdrain System Underdrain pipe is per design specifications At least one cleanout is provided per underdrain lateral Cleanout pipe is not perforated Cleanout covers are installed and watertight Underdrain is NOT wrapped in geotextile fabric Underdrain orifice plate installed at outlet structure Underdrain integrity tested after backfilling using TV and/or water test /15 Page 4 Filter Media Filter media composition is per design specifications Filter media was “machine mixed” by supplier prior to delivery Filter media installed flat and level Other Structural Components Containment wall/berm is continuous and level Landscaping Final landscaping does NOT include sod Final landscaping (wood/rock mulch) is flat and level Vegetation is planted according to landscape design specifications Verify that weed barrier is not installed Temporary irrigation installed If N/A, then verify that permanent irrigation is installed to establish/maintain vegetation Close Out Upstream catchment stabilized prior to diverting runoff into bioretention cell Signature: Name: Title: Email: Phone: Company: Address: /15 Page 1 DURING CONSTRUCTION INSPECTION CHECKLIST To be completed by Construction Superintendent This checklist is to be completed during construction and included with the Overall Site and Drainage Certification. Use “Yes” for items completed as described. Use “N/A” for items that are not applicable to the site being certified. If any blanks are “No,” attach an explanation referencing the item number below. I. Compaction A. All berms and embankments meet the compaction requirements as specified in the project geotechnical report or comply with the City’s standard, which is “soils should be compacted within a moisture content range of 2% below to 2% above optimum moisture content and compacted to 95% of the Maximum Standard Proctor Density (ASTM D698).” Compaction requires verification during construction. Provide testing log from contractor/engineer. II. Storm Drain Pipe Installation Requirements A. The pipe trenches have been compacted in accordance with Section 02225-3.07.A.1. of the Fort Collins Development Construction Standards (e.g., the trenches in the roadways are to be 95% of maximum density and all other areas are to be at 90%, both in accordance with ASTM D698). III.Riprap - FCSCM Vol.1, Ch.7, Sec.4.4.4.3 A. The riprap bedding is a granular bedding of the gradation and thickness indicated on the approved construction plans. B. A filter fabric was installed instead of granular bedding and is the material shown on the approved construction plans or was an approved equal. Provide documentation for an approved equal. C. The riprap is the gradation shown on the approved construction plans with a D50 of . D. The riprap thickness is as shown on the approved construction plans and extends to the horizontal limits shown. E. The riprap is buried to the depth indicated on the approved construction plans. (A minimum of 6 inches of soil is required.) IV.Permanent Erosion Control Fabric - FCSCM Vol.1, Ch.7 A. All fabric was installed per manufacturer’s specifications. V.Certification of Other Permanent BMPs - FCSCM Vol.2, Ch.8, Sec.2 & FCSCM Vol.2, Ch.12 A. All cut-off walls have been installed in accordance with the approved construction plans. (Cut-off walls are required for irrigation ditch crossings of storm drain pipes and at the end of flared end sections.) /15 Page 2 Permeable Interlocking Concrete Pavers Item/Activity Yes No N/A Documentation/Submittal Requirements Excavation Post-excavation infiltration rates are consistent with design infiltration capacity (for “full or partial infiltration” designs) Impermeable Liner Impermeable liner meets design specifications Impermeable liner attached to concrete perimeter wall Impermeable liner is not exposed Any penetrations of the impermeable liner have been sealed and checked for water-tightness. Concrete Cut-Off Wall Meets specifications for: -Dimensions -Reinforcement -Footings Underdrain System Underdrain pipe is per design specifications At least one cleanout is provided per underdrain lateral Cleanout pipe is not perforated Cleanout covers are installed and watertight Underdrain is NOT wrapped in geotextile fabric Underdrain orifice plate installed at outlet structure Underdrain integrity tested after backfilling using TV and/or water test Aggregate Base coarse (e.g.,#2/4) has 90% fractured faces Bedding coarse (e.g.,#89) is thoroughly washed Sub-base materials are installed and compacted according to manufacturer’s specifications Protection During Construction PICP area is protected from construction site sediment, including runoff from the upstream catchment and construction equipment traffic Close Out Upstream catchment is stabilized prior to diverting runoff into PICP system /15 Page 3 Bioretention Cells Item/Activity Yes No N/A Documentation/Submittal Requirements Excavation Heavy equipment did not travel over bioretention cell during excavation Bottom of cell was “ripped” after excavation Photograph before/after “ripping” Bottom of cell is flat and level Photograph Excavated area is protected/surrounded by sediment/runoff control BMPs during construction Photograph Inlet Overflow inlet elevation is set above bioretention media per plan (typically 12 inches) Overflow inlet invert elevation is at least 3 inches below containment wall/berm (to direct overflow into inlet) Measure/record distance between inlet and top of containment wall/berm Upstream catchment drains to inlet Forebay Forebay is installed according to design specifications Forebay has flat, concrete bottom Outlet Structure/Overflow Outlet structure/overflow elevation is confirmed Measure/record distance from overflow to top of media filter Impermeable Liner Impermeable liner meets design specifications Impermeable liner attached to concrete perimeter wall Impermeable liner is not exposed Underdrain System Underdrain pipe is per design specifications At least one cleanout is provided per underdrain lateral Cleanout pipe is not perforated Cleanout covers are installed and watertight Underdrain is NOT wrapped in geotextile fabric Underdrain orifice plate installed at outlet structure Underdrain integrity tested after backfilling using TV and/or water test /15 Page 4 Filter Media Filter media composition is per design specifications Filter media was “machine mixed” by supplier prior to delivery Filter media installed flat and level Other Structural Components Containment wall/berm is continuous and level Landscaping Final landscaping does NOT include sod Final landscaping (wood/rock mulch) is flat and level Vegetation is planted according to landscape design specifications Verify that weed barrier is not installed Temporary irrigation installed If N/A, then verify that permanent irrigation is installed to establish/maintain vegetation Close Out Upstream catchment stabilized prior to diverting runoff into bioretention cell Signature: Name: Title: Email: Phone: Company: Address: /15 Page 1 DURING CONSTRUCTION INSPECTION CHECKLIST To be completed by Construction Superintendent This checklist is to be completed during construction and included with the Overall Site and Drainage Certification. Use “Yes” for items completed as described. Use “N/A” for items that are not applicable to the site being certified. If any blanks are “No,” attach an explanation referencing the item number below. I. Compaction A. All berms and embankments meet the compaction requirements as specified in the project geotechnical report or comply with the City’s standard, which is “soils should be compacted within a moisture content range of 2% below to 2% above optimum moisture content and compacted to 95% of the Maximum Standard Proctor Density (ASTM D698).” Compaction requires verification during construction. Provide testing log from contractor/engineer. II. Storm Drain Pipe Installation Requirements A. The pipe trenches have been compacted in accordance with Section 02225-3.07.A.1. of the Fort Collins Development Construction Standards (e.g., the trenches in the roadways are to be 95% of maximum density and all other areas are to be at 90%, both in accordance with ASTM D698). III.Riprap - FCSCM Vol.1, Ch.7, Sec.4.4.4.3 A. The riprap bedding is a granular bedding of the gradation and thickness indicated on the approved construction plans. B. A filter fabric was installed instead of granular bedding and is the material shown on the approved construction plans or was an approved equal. Provide documentation for an approved equal. C. The riprap is the gradation shown on the approved construction plans with a D50 of . D. The riprap thickness is as shown on the approved construction plans and extends to the horizontal limits shown. E. The riprap is buried to the depth indicated on the approved construction plans. (A minimum of 6 inches of soil is required.) IV.Permanent Erosion Control Fabric - FCSCM Vol.1, Ch.7 A. All fabric was installed per manufacturer’s specifications. V.Certification of Other Permanent BMPs - FCSCM Vol.2, Ch.8, Sec.2 & FCSCM Vol.2, Ch.12 A. All cut-off walls have been installed in accordance with the approved construction plans. (Cut-off walls are required for irrigation ditch crossings of storm drain pipes and at the end of flared end sections.) /15 Page 2 Permeable Interlocking Concrete Pavers Item/Activity Yes No N/A Documentation/Submittal Requirements Excavation Post-excavation infiltration rates are consistent with design infiltration capacity (for “full or partial infiltration” designs) Impermeable Liner Impermeable liner meets design specifications Impermeable liner attached to concrete perimeter wall Impermeable liner is not exposed Any penetrations of the impermeable liner have been sealed and checked for water-tightness. Concrete Cut-Off Wall Meets specifications for: -Dimensions -Reinforcement -Footings Underdrain System Underdrain pipe is per design specifications At least one cleanout is provided per underdrain lateral Cleanout pipe is not perforated Cleanout covers are installed and watertight Underdrain is NOT wrapped in geotextile fabric Underdrain orifice plate installed at outlet structure Underdrain integrity tested after backfilling using TV and/or water test Aggregate Base coarse (e.g.,#2/4) has 90% fractured faces Bedding coarse (e.g.,#89) is thoroughly washed Sub-base materials are installed and compacted according to manufacturer’s specifications Protection During Construction PICP area is protected from construction site sediment, including runoff from the upstream catchment and construction equipment traffic Close Out Upstream catchment is stabilized prior to diverting runoff into PICP system /15 Page 3 Bioretention Cells Item/Activity Yes No N/A Documentation/Submittal Requirements Excavation Heavy equipment did not travel over bioretention cell during excavation Bottom of cell was “ripped” after excavation Photograph before/after “ripping” Bottom of cell is flat and level Photograph Excavated area is protected/surrounded by sediment/runoff control BMPs during construction Photograph Inlet Overflow inlet elevation is set above bioretention media per plan (typically 12 inches) Overflow inlet invert elevation is at least 3 inches below containment wall/berm (to direct overflow into inlet) Measure/record distance between inlet and top of containment wall/berm Upstream catchment drains to inlet Forebay Forebay is installed according to design specifications Forebay has flat, concrete bottom Outlet Structure/Overflow Outlet structure/overflow elevation is confirmed Measure/record distance from overflow to top of media filter Impermeable Liner Impermeable liner meets design specifications Impermeable liner attached to concrete perimeter wall Impermeable liner is not exposed Underdrain System Underdrain pipe is per design specifications At least one cleanout is provided per underdrain lateral Cleanout pipe is not perforated Cleanout covers are installed and watertight Underdrain is NOT wrapped in geotextile fabric Underdrain orifice plate installed at outlet structure Underdrain integrity tested after backfilling using TV and/or water test /15 Page 4 Filter Media Filter media composition is per design specifications Filter media was “machine mixed” by supplier prior to delivery Filter media installed flat and level Other Structural Components Containment wall/berm is continuous and level Landscaping Final landscaping does NOT include sod Final landscaping (wood/rock mulch) is flat and level Vegetation is planted according to landscape design specifications Verify that weed barrier is not installed Temporary irrigation installed If N/A, then verify that permanent irrigation is installed to establish/maintain vegetation Close Out Upstream catchment stabilized prior to diverting runoff into bioretention cell Signature: Name: Title: Email: Phone: Company: Address: /15 Page 1 DURING CONSTRUCTION INSPECTION CHECKLIST To be completed by Construction Superintendent This checklist is to be completed during construction and included with the Overall Site and Drainage Certification. Use “Yes” for items completed as described. Use “N/A” for items that are not applicable to the site being certified. If any blanks are “No,” attach an explanation referencing the item number below. I. Compaction A. All berms and embankments meet the compaction requirements as specified in the project geotechnical report or comply with the City’s standard, which is “soils should be compacted within a moisture content range of 2% below to 2% above optimum moisture content and compacted to 95% of the Maximum Standard Proctor Density (ASTM D698).” Compaction requires verification during construction. Provide testing log from contractor/engineer. II. Storm Drain Pipe Installation Requirements A. The pipe trenches have been compacted in accordance with Section 02225-3.07.A.1. of the Fort Collins Development Construction Standards (e.g., the trenches in the roadways are to be 95% of maximum density and all other areas are to be at 90%, both in accordance with ASTM D698). III.Riprap - FCSCM Vol.1, Ch.7, Sec.4.4.4.3 A. The riprap bedding is a granular bedding of the gradation and thickness indicated on the approved construction plans. B. A filter fabric was installed instead of granular bedding and is the material shown on the approved construction plans or was an approved equal. Provide documentation for an approved equal. C. The riprap is the gradation shown on the approved construction plans with a D50 of . D. The riprap thickness is as shown on the approved construction plans and extends to the horizontal limits shown. E. The riprap is buried to the depth indicated on the approved construction plans. (A minimum of 6 inches of soil is required.) IV.Permanent Erosion Control Fabric - FCSCM Vol.1, Ch.7 A. All fabric was installed per manufacturer’s specifications. V.Certification of Other Permanent BMPs - FCSCM Vol.2, Ch.8, Sec.2 & FCSCM Vol.2, Ch.12 A. All cut-off walls have been installed in accordance with the approved construction plans. (Cut-off walls are required for irrigation ditch crossings of storm drain pipes and at the end of flared end sections.) /15 Page 2 Permeable Interlocking Concrete Pavers Item/Activity Yes No N/A Documentation/Submittal Requirements Excavation Post-excavation infiltration rates are consistent with design infiltration capacity (for “full or partial infiltration” designs) Impermeable Liner Impermeable liner meets design specifications Impermeable liner attached to concrete perimeter wall Impermeable liner is not exposed Any penetrations of the impermeable liner have been sealed and checked for water-tightness. Concrete Cut-Off Wall Meets specifications for: -Dimensions -Reinforcement -Footings Underdrain System Underdrain pipe is per design specifications At least one cleanout is provided per underdrain lateral Cleanout pipe is not perforated Cleanout covers are installed and watertight Underdrain is NOT wrapped in geotextile fabric Underdrain orifice plate installed at outlet structure Underdrain integrity tested after backfilling using TV and/or water test Aggregate Base coarse (e.g.,#2/4) has 90% fractured faces Bedding coarse (e.g.,#89) is thoroughly washed Sub-base materials are installed and compacted according to manufacturer’s specifications Protection During Construction PICP area is protected from construction site sediment, including runoff from the upstream catchment and construction equipment traffic Close Out Upstream catchment is stabilized prior to diverting runoff into PICP system /15 Page 3 Bioretention Cells Item/Activity Yes No N/A Documentation/Submittal Requirements Excavation Heavy equipment did not travel over bioretention cell during excavation Bottom of cell was “ripped” after excavation Photograph before/after “ripping” Bottom of cell is flat and level Photograph Excavated area is protected/surrounded by sediment/runoff control BMPs during construction Photograph Inlet Overflow inlet elevation is set above bioretention media per plan (typically 12 inches) Overflow inlet invert elevation is at least 3 inches below containment wall/berm (to direct overflow into inlet) Measure/record distance between inlet and top of containment wall/berm Upstream catchment drains to inlet Forebay Forebay is installed according to design specifications Forebay has flat, concrete bottom Outlet Structure/Overflow Outlet structure/overflow elevation is confirmed Measure/record distance from overflow to top of media filter Impermeable Liner Impermeable liner meets design specifications Impermeable liner attached to concrete perimeter wall Impermeable liner is not exposed Underdrain System Underdrain pipe is per design specifications At least one cleanout is provided per underdrain lateral Cleanout pipe is not perforated Cleanout covers are installed and watertight Underdrain is NOT wrapped in geotextile fabric Underdrain orifice plate installed at outlet structure Underdrain integrity tested after backfilling using TV and/or water test /15 Page 4 Filter Media Filter media composition is per design specifications Filter media was “machine mixed” by supplier prior to delivery Filter media installed flat and level Other Structural Components Containment wall/berm is continuous and level Landscaping Final landscaping does NOT include sod Final landscaping (wood/rock mulch) is flat and level Vegetation is planted according to landscape design specifications Verify that weed barrier is not installed Temporary irrigation installed If N/A, then verify that permanent irrigation is installed to establish/maintain vegetation Close Out Upstream catchment stabilized prior to diverting runoff into bioretention cell Signature: Name: Title: Email: Phone: Company: Address: /15 Page 1 DURING CONSTRUCTION INSPECTION CHECKLIST To be completed by Construction Superintendent This checklist is to be completed during construction and included with the Overall Site and Drainage Certification. Use “Yes” for items completed as described. Use “N/A” for items that are not applicable to the site being certified. If any blanks are “No,” attach an explanation referencing the item number below. I. Compaction A. All berms and embankments meet the compaction requirements as specified in the project geotechnical report or comply with the City’s standard, which is “soils should be compacted within a moisture content range of 2% below to 2% above optimum moisture content and compacted to 95% of the Maximum Standard Proctor Density (ASTM D698).” Compaction requires verification during construction. Provide testing log from contractor/engineer. II. Storm Drain Pipe Installation Requirements A. The pipe trenches have been compacted in accordance with Section 02225-3.07.A.1. of the Fort Collins Development Construction Standards (e.g., the trenches in the roadways are to be 95% of maximum density and all other areas are to be at 90%, both in accordance with ASTM D698). III.Riprap - FCSCM Vol.1, Ch.7, Sec.4.4.4.3 A. The riprap bedding is a granular bedding of the gradation and thickness indicated on the approved construction plans. B. A filter fabric was installed instead of granular bedding and is the material shown on the approved construction plans or was an approved equal. Provide documentation for an approved equal. C. The riprap is the gradation shown on the approved construction plans with a D50 of . D. The riprap thickness is as shown on the approved construction plans and extends to the horizontal limits shown. E. The riprap is buried to the depth indicated on the approved construction plans. (A minimum of 6 inches of soil is required.) IV.Permanent Erosion Control Fabric - FCSCM Vol.1, Ch.7 A. All fabric was installed per manufacturer’s specifications. V.Certification of Other Permanent BMPs - FCSCM Vol.2, Ch.8, Sec.2 & FCSCM Vol.2, Ch.12 A. All cut-off walls have been installed in accordance with the approved construction plans. (Cut-off walls are required for irrigation ditch crossings of storm drain pipes and at the end of flared end sections.) /15 Page 2 Permeable Interlocking Concrete Pavers Item/Activity Yes No N/A Documentation/Submittal Requirements Excavation Post-excavation infiltration rates are consistent with design infiltration capacity (for “full or partial infiltration” designs) Impermeable Liner Impermeable liner meets design specifications Impermeable liner attached to concrete perimeter wall Impermeable liner is not exposed Any penetrations of the impermeable liner have been sealed and checked for water-tightness. Concrete Cut-Off Wall Meets specifications for: -Dimensions -Reinforcement -Footings Underdrain System Underdrain pipe is per design specifications At least one cleanout is provided per underdrain lateral Cleanout pipe is not perforated Cleanout covers are installed and watertight Underdrain is NOT wrapped in geotextile fabric Underdrain orifice plate installed at outlet structure Underdrain integrity tested after backfilling using TV and/or water test Aggregate Base coarse (e.g.,#2/4) has 90% fractured faces Bedding coarse (e.g.,#89) is thoroughly washed Sub-base materials are installed and compacted according to manufacturer’s specifications Protection During Construction PICP area is protected from construction site sediment, including runoff from the upstream catchment and construction equipment traffic Close Out Upstream catchment is stabilized prior to diverting runoff into PICP system /15 Page 3 Bioretention Cells Item/Activity Yes No N/A Documentation/Submittal Requirements Excavation Heavy equipment did not travel over bioretention cell during excavation Bottom of cell was “ripped” after excavation Photograph before/after “ripping” Bottom of cell is flat and level Photograph Excavated area is protected/surrounded by sediment/runoff control BMPs during construction Photograph Inlet Overflow inlet elevation is set above bioretention media per plan (typically 12 inches) Overflow inlet invert elevation is at least 3 inches below containment wall/berm (to direct overflow into inlet) Measure/record distance between inlet and top of containment wall/berm Upstream catchment drains to inlet Forebay Forebay is installed according to design specifications Forebay has flat, concrete bottom Outlet Structure/Overflow Outlet structure/overflow elevation is confirmed Measure/record distance from overflow to top of media filter Impermeable Liner Impermeable liner meets design specifications Impermeable liner attached to concrete perimeter wall Impermeable liner is not exposed Underdrain System Underdrain pipe is per design specifications At least one cleanout is provided per underdrain lateral Cleanout pipe is not perforated Cleanout covers are installed and watertight Underdrain is NOT wrapped in geotextile fabric Underdrain orifice plate installed at outlet structure Underdrain integrity tested after backfilling using TV and/or water test /15 Page 4 Filter Media Filter media composition is per design specifications Filter media was “machine mixed” by supplier prior to delivery Filter media installed flat and level Other Structural Components Containment wall/berm is continuous and level Landscaping Final landscaping does NOT include sod Final landscaping (wood/rock mulch) is flat and level Vegetation is planted according to landscape design specifications Verify that weed barrier is not installed Temporary irrigation installed If N/A, then verify that permanent irrigation is installed to establish/maintain vegetation Close Out Upstream catchment stabilized prior to diverting runoff into bioretention cell Signature: Name: Title: Email: Phone: Company: Address: /15 Page 1 DURING CONSTRUCTION INSPECTION CHECKLIST To be completed by Construction Superintendent This checklist is to be completed during construction and included with the Overall Site and Drainage Certification. Use “Yes” for items completed as described. Use “N/A” for items that are not applicable to the site being certified. If any blanks are “No,” attach an explanation referencing the item number below. I. Compaction A. All berms and embankments meet the compaction requirements as specified in the project geotechnical report or comply with the City’s standard, which is “soils should be compacted within a moisture content range of 2% below to 2% above optimum moisture content and compacted to 95% of the Maximum Standard Proctor Density (ASTM D698).” Compaction requires verification during construction. Provide testing log from contractor/engineer. II. Storm Drain Pipe Installation Requirements A. The pipe trenches have been compacted in accordance with Section 02225-3.07.A.1. of the Fort Collins Development Construction Standards (e.g., the trenches in the roadways are to be 95% of maximum density and all other areas are to be at 90%, both in accordance with ASTM D698). III.Riprap - FCSCM Vol.1, Ch.7, Sec.4.4.4.3 A. The riprap bedding is a granular bedding of the gradation and thickness indicated on the approved construction plans. B. A filter fabric was installed instead of granular bedding and is the material shown on the approved construction plans or was an approved equal. Provide documentation for an approved equal. C. The riprap is the gradation shown on the approved construction plans with a D50 of . D. The riprap thickness is as shown on the approved construction plans and extends to the horizontal limits shown. E. The riprap is buried to the depth indicated on the approved construction plans. (A minimum of 6 inches of soil is required.) IV.Permanent Erosion Control Fabric - FCSCM Vol.1, Ch.7 A. All fabric was installed per manufacturer’s specifications. V.Certification of Other Permanent BMPs - FCSCM Vol.2, Ch.8, Sec.2 & FCSCM Vol.2, Ch.12 A. All cut-off walls have been installed in accordance with the approved construction plans. (Cut-off walls are required for irrigation ditch crossings of storm drain pipes and at the end of flared end sections.) /15 Page 2 Permeable Interlocking Concrete Pavers Item/Activity Yes No N/A Documentation/Submittal Requirements Excavation Post-excavation infiltration rates are consistent with design infiltration capacity (for “full or partial infiltration” designs) Impermeable Liner Impermeable liner meets design specifications Impermeable liner attached to concrete perimeter wall Impermeable liner is not exposed Any penetrations of the impermeable liner have been sealed and checked for water-tightness. Concrete Cut-Off Wall Meets specifications for: -Dimensions -Reinforcement -Footings Underdrain System Underdrain pipe is per design specifications At least one cleanout is provided per underdrain lateral Cleanout pipe is not perforated Cleanout covers are installed and watertight Underdrain is NOT wrapped in geotextile fabric Underdrain orifice plate installed at outlet structure Underdrain integrity tested after backfilling using TV and/or water test Aggregate Base coarse (e.g.,#2/4) has 90% fractured faces Bedding coarse (e.g.,#89) is thoroughly washed Sub-base materials are installed and compacted according to manufacturer’s specifications Protection During Construction PICP area is protected from construction site sediment, including runoff from the upstream catchment and construction equipment traffic Close Out Upstream catchment is stabilized prior to diverting runoff into PICP system /15 Page 3 Bioretention Cells Item/Activity Yes No N/A Documentation/Submittal Requirements Excavation Heavy equipment did not travel over bioretention cell during excavation Bottom of cell was “ripped” after excavation Photograph before/after “ripping” Bottom of cell is flat and level Photograph Excavated area is protected/surrounded by sediment/runoff control BMPs during construction Photograph Inlet Overflow inlet elevation is set above bioretention media per plan (typically 12 inches) Overflow inlet invert elevation is at least 3 inches below containment wall/berm (to direct overflow into inlet) Measure/record distance between inlet and top of containment wall/berm Upstream catchment drains to inlet Forebay Forebay is installed according to design specifications Forebay has flat, concrete bottom Outlet Structure/Overflow Outlet structure/overflow elevation is confirmed Measure/record distance from overflow to top of media filter Impermeable Liner Impermeable liner meets design specifications Impermeable liner attached to concrete perimeter wall Impermeable liner is not exposed Underdrain System Underdrain pipe is per design specifications At least one cleanout is provided per underdrain lateral Cleanout pipe is not perforated Cleanout covers are installed and watertight Underdrain is NOT wrapped in geotextile fabric Underdrain orifice plate installed at outlet structure Underdrain integrity tested after backfilling using TV and/or water test /15 Page 4 Filter Media Filter media composition is per design specifications Filter media was “machine mixed” by supplier prior to delivery Filter media installed flat and level Other Structural Components Containment wall/berm is continuous and level Landscaping Final landscaping does NOT include sod Final landscaping (wood/rock mulch) is flat and level Vegetation is planted according to landscape design specifications Verify that weed barrier is not installed Temporary irrigation installed If N/A, then verify that permanent irrigation is installed to establish/maintain vegetation Close Out Upstream catchment stabilized prior to diverting runoff into bioretention cell Signature: Name: Title: Email: Phone: Company: Address: April 2015 CONDITIONAL USE LEVEL DESIGNATION FOR BASIC TREATMENT For CONTECH Engineered Solutions CDS® System Based on the CONTECH Engineered Solutions (CONTECH) application submissions for the CDS® System, Ecology hereby issues the following use designations for the CDS storm water treatment system: 1. Conditional Use Level Designation (CULD) for basic treatment. This CULD applies to 2400-micron screen CDS units sized per the table below at the water quality design flowrate as determined using the Western Washington Hydrology Model (WWHM). 2. The following table shows flowrates associated with various CDS models: CDS Model Water Quality Flow cfs L/s Pr e c a s t * * In l i n e o r O f f l i n e CDS 2015-4 0.7 19.8 CDS 2015-5 0.7 19.8 CDS 2020-5 1.1 31.2 CDS2025-5 1.6 45.3 CDS3020-6 2 56.6 CDS3030-6 3 85.0 CDS3035-6 3.8 106.2 CDS4030-8 4.5 127.4 CDS4040-8 6 169.9 CDS4045-8 7.5 212.4 CDS5640-10 9 254.9 CDS5653-10 14 396.5 CDS5668-10 19 538.1 CDS5678-10 25 7.08 Of f l i n e O n l y CDS3030-V 3 85 Pr e c a s t * * CDS4030-7 4.5 127.4 CDS4040-7 6 169.9 CDS4045-7 7.5 212.4 CDS5640-8 9 254.9 CDS5653-8 14 396.5 CDS5668-8 19 538.1 CDS5678-8 25 708 CDS5042 9 254.9 CDS5050 11 311.5 CDS7070 26 736.3 CDS10060 30 849.6 CDS10080 50 1416 CDS100100 64 1812.5 Cast In Place CDS150134-22 148 4191.4 CDS200164-26 270 7646.6 CDS240160-32 300 8496.2 **Contact Contech for updated model numbers if PMIU, PMSU, PSW, PSWC are specified. 3. The water quality design flow rates are calculated using the following procedures: Western Washington: For treatment installed upstream of detention or retention, the water quality design flow rate is the peak 15-minute flow rate as calculated using the latest version of the Western Washington Hydrology Model or other Ecology- approved continuous runoff model. Eastern Washington: For treatment installed upstream of detention or retention, the water quality design flow rate is the peak 15-minute flow rate as calculated using one of the three methods described in Chapter 2.2.5 of the Stormwater Management Manual for Eastern Washington (SWMMEW) or local manual. Entire State: For treatment installed downstream of detention, the water quality design flow rate is the full 2-year release rate of the detention facility. 4. The basic treatment CULD expires on October 30, 2017 unless extended by Ecology. 5. All designations are subject to the conditions specified below. 6. Properly designed and operated CDS systems may also have applicability in other situations (example: low-head situations such as bridges or ferry docks), for TSS removal where, on a case-by-case basis, it is found to be infeasible or impracticable to use any other approved practice. Jurisdictions covered under the Phase I or II municipal stormwater permits should use variance/exception procedures and criteria as required by their NPDES permit. 7. Ecology finds that the CDS, sized according to the table above, could also provide water quality benefits in retrofit situations. CDS systems shall comply with these conditions: 1. Design, assemble, install, operate, and maintain CDS Systems in accordance with and the Ecology decision and conditions specified herein. Ecology recommends use of the inspection and maintenance schedule included as Attachment 1. 2. Discharges from the CDS System shall not cause or contribute to water quality standards violations in receiving waters. 3. Contech commits to submitting a QAPP for Ecology approval by November 30, 2015 that meets the TAPE requirements for attaining a GULD for Oil Treatment. Ecology must review and approve additional QAPPs for each PULD field site in Washington State. Choose sites to 4. Contech shall complete all required testing and submit a TER on total suspended solids removal for Ecology review by March 31, 2017. 5. Contech may request Ecology to grant deadline or expiration date extensions, upon showing cause for such extensions. Applicant: Contech Engineered Solutions Applicant Address: 11835 NE Glen Widing Drive Portland, OR 97220 Application Documents: Contech CDS® CULD Application for Basic Treatment submitted to Washington State Department of Ecology (April 2015) NJCAT Technology Verification High Efficiency Continuous Deflective Separator (CDS®) (January 2010) Request: Conditional use level designation as a suspended solids device in accordance with Stormwater Management Manual for Western Washington. Based on NJCAT field verification, the CDS® System will achieve 95% removal of total suspended solids -mg/L and a mean influent of 332- mg/L. The CDS® will achieve 65% removal efficiency of suspended sediment concentration (<50-) with a median influent of 35-mg/L and a mean influent of 40-mg/L. For the field verification the CDS® System was evaluated at flows between 8% and 103% design flow rate. Recommendation: Ecology finds that: The system, sized per the table above, should provide, at a minimum, equivalent performance to a Basic Treatment Device as defined in the most recent Stormwater Management Manual for Western Washington, Volume V. Findings of Fact: 1. Contech completed field testing on a CDS 2025 unit equipment with a 2400-µm screen. Contech performed the testing in the Borough of Point Pleasant, New Jersey following the TARP Tier II Protocol (TARP, 2003) and New Jersey Tier II Stormwater Test Requirements Amendments to TARP Tier II Protocol (NJDEP, 2006). Contech evaluated the system was evaluated at flow rates ranging 8 to 103% of the design flow rate (1.6 cfs). Influent TSS concentrations (<2000 µm) ranged from 24 to 2259 mg/L, with a median of 154 mg/L and influent SSC concentrations (<50 µm) ranged from 5 to 125 mg/L, with a median of 35 mg/L. Based on the total event loading, results showed an overall removal efficiency of 95% for TSS (<2000 µm) and an overall removal efficiency of 65% for SSC (<50 µm). 2. CDS Technology has been widely accepted with over 6,200 installations in the United States and Canada. There are over 1,380 installations in Washington and Oregon. Technology Description: Engineers can download a technology description www.conteches.com Recommended Research and Development: Ecology encourages Contech to pursue continuous improvements to the CDS system. To that end, Ecology makes the following recommendations: 1. Conduct testing to quantify the flowrate at which resuspension occurs. 2. Conduct testing on various sized CDS units to verify the sizing technique is appropriate. 3. Test the system under normal operating conditions, pollutants partially filling the swirl concentrator. be representative of typical performance. Contact Information: Applicant Contact: Sean Darcy Contech Engineered Solutions (800) 548-4667 sdarcy@conteches.com Applicant website: http://www.conteches.com/ Ecology web link: http://www.ecy.wa.gov/programs/wq/stormwater/newtech/index.html Ecology: Douglas C. Howie. P.E. Department of Ecology Water Quality Program (360) 407-6444 douglas.howie@ecy.wa.gov April 2015 Initial Use Level Designation Attachment 1 CDS Stormwater Treatment Unit Checklist Frequency Drainage System Feature Problem Conditions to Check For Recommended Action Date Inspected* J F M A M J J A S O N D M & S Inlet Chamber Accumulation of trash, debris and sediment Trash blocking inlet throat opening & sediment accumulation exceeds 2 inches Remove trash, debris, and sediments. Inlet throat opening should not be blocked by any materials. A Screen Blockage/Damage Biological growth on the surface of the screen; broken screen or loose screen Powerwash screen to clean the surface and Contact CSS for screen repair (broken or loose) M Separation Chamber Trash and floatable debris accumulation Excessive trash and floatable debris accumulation on the surface in separation chamber Remove trash or other floatable debris in separation chamber to minimum level A Oil Baffle** Damaged Baffles corroding, cracking, warping, and/or showing signs of failure as determined by maintenance/inspection person. Baffles repaired or replaced to design specifications. M & S Oil sorbent** Consumed Change of color in sorbents (fresh sorbents typically appears to be white or light yellow) Remove spent oil sorbent and replace with new sorbent M Sediment Depth in the Sump Sediment accumulation Sediment accumulation exceeds 75-85% sump depth (varies depending on the Model, see attached Table) Sediment in sump should be removed using vactor truck. M Sediment Depth behind the screen Sediment accumulation Sediment accumulation exceeds 2 inches behind the screen Sediment behind the screen should be removed using vactor truck. Frequency Drainage System Feature Problem Conditions to Check For Recommended Action Date Inspected* J F M A M J J A S O N D M Access Cover (MH, Grate, cleanout) Access cover Damaged/ Not working One maintenance person cannot remove lid after applying 80 pounds of lift, corrosion of deformation of cover. Cover repaired to proper working specifications or replaced. A Inlet and Outlet Piping Damaged Piping/Leaking Any part of the pipes are crushed or damaged due to corrosion and/or settlement. Pipe repaired or replaced. A Concrete Structure Concrete structure (MH or diversion vault) has cracks in wall, bottom, and damage to frame and/or top slab. Cracks wider than ½ inch or evidence of soil particles entering the structure through the cracks, or maintenance/inspection personnel determine that the structure is not structurally sound. Structure repaired so that no cracks exist wider than 0.25 inch at the joint of inlet/outlet pipe. *Note dates when maintenance was performed and type of maintenance performed in notes section below. **May not be present on all units. (M) Monthly from November through April. (A) Once in late summer (preferable September) (S) After any major storm (use 1-inch in 24 hours as a guideline). If you are unsure whether a problem exists, please contact a Professional Engineer. Notes: Maintenance of CDS stormwater treatment unit typically does not require confined space entry. Visual inspections should be performed above ground. If entry is required, it should be performed by qualified personnel. Refer to CDS Unit Operation & Maintenance Guideline for maintenance details. Typically the CDS unit needs to be inspected before and after the rainfall seasons (November to April), after any major storms (>1-inch within 24 hour) and in the event of chemical spills. Contact Contech Engineered Solutions (CSS) (800-548-4667) if there is any damage to the internal components of CDS Unit. CDS Maintenance Indicators and Sediment Storage Capacities CDS Model Diameter Distance from Water Surface to Top of Sediment Pile Sediment Storage Capacity ft m ft m yd3 m3 CDS2015 5 1.5 3.0 0.9 1.3 1.0 CDS2020 5 1.5 3.5 1.1 1.3 1.0 CDS2025 5 1.5 4.0 1.2 1.3 1.0 CDS3020 6 1.8 4.0 1.2 2.1 1.6 CDS3030 6 1.8 4.6 1.4 2.1 1.6 CDS3035 6 1.8 5.0 1.5 2.1 1.6 CDS4030 8 2.4 4.6 1.4 5.6 4.3 CDS4040 8 2.4 5.7 1.7 5.6 4.3 CDS4045 8 2.4 6.2 1.9 5.6 4.3 July 2016 GENERAL USE LEVEL DESIGNATION FOR PRETREATMENT (TSS) AND CONDITIONAL USE LEVEL DESIGNATION FOR OIL CONTROL For CONTECH Engineered Solutions CDS® System Based on the CONTECH Engineered Solutions (CONTECH) application submissions for the CDS® System, Ecology hereby issues the following use designations for the CDS storm water treatment system: 1. General Use Level Designation (GULD) for pretreatment use, as defined in Ecology 2011 Technical Guidance Manual for Evaluating Emerging Stormwater Treatment Technologies Technology Assessment Protocol Ecology (TAPE) Table 2, (a) ahead of infiltration treatment, or (b) to protect and extend the maintenance cycle of a basic, enhanced, or phosphorus treatment device (e.g., sand or media filter). This GULD applies to 2,400 micron screen CDS® units sized per the table below. 2. Conditional Use Level Designation (CULD) for oil and grease treatment. This CULD applies to 2400 micron screen CDS units sized per the table above at the water quality design flowrate as determined using the Western Washington Hydrology Model (WWHM). 3. The following table shows flowrates associated with various CDS models: CDS Model Water Quality Flow cfs L/s Pr e c a s t * * In l i n e o r O f f l i n e CDS 2015-4 0.7 19.8 CDS 2015-5 0.7 19.8 CDS 2020-5 1.1 31.2 CDS2025-5 1.6 45.3 CDS3020-6 2 56.6 CDS3030-6 3 85.0 CDS3035-6 3.8 106.2 CDS4030-8 4.5 127.4 CDS4040-8 6 169.9 CDS4045-8 7.5 212.4 CDS5640-10 9 254.9 CDS5653-10 14 396.5 CDS5668-10 19 538.1 CDS5678-10 25 7.08 Of f l i n e O n l y CDS3030-V 3 85 Pr e c a s t * * CDS4030-7 4.5 127.4 CDS4040-7 6 169.9 CDS4045-7 7.5 212.4 CDS5640-8 9 254.9 CDS5653-8 14 396.5 CDS5668-8 19 538.1 CDS5678-8 25 708 CDS5042 9 254.9 CDS5050 11 311.5 CDS7070 26 736.3 CDS10060 30 849.6 CDS10080 50 1416 CDS100100 64 1812.5 Cast In Place CDS150134-22 148 4191.4 CDS200164-26 270 7646.6 CDS240160-32 300 8496.2 *Specially Designed CDS Units may be approved by Ecology on a on a site-by-site basis. **Contact Contech for updated model numbers if PMIU, PMSU, PSW, PSWC are specified. 4. The water quality design flow rates are calculated using the following procedures: Western Washington: For treatment installed upstream of detention or retention, the water quality design flow rate is the peak 15-minute flow rate as calculated using the latest version of the Western Washington Hydrology Model or other Ecology- approved continuous runoff model. Eastern Washington: For treatment installed upstream of detention or retention, the water quality design flow rate is the peak 15-minute flow rate as calculated using one of the three methods described in Chapter 2.2.5 of the Stormwater Management Manual for Eastern Washington (SWMMEW) or local manual. Entire State: For treatment installed downstream of detention, the water quality design flow rate is the full 2-year release rate of the detention facility. 5. The pretreatment GULD has no expiration date; however, Ecology may amend or revoke the designation. 6. The oil and grease CULD expires on December 31, 2017 unless extended by Ecology. 7. All designations are subject to the conditions specified below. 8. Properly designed and operated CDS systems may also have applicability in other situations (example: low-head situations such as bridges or ferry docks), for TSS and oil/grease removal where, on a case-by-case basis, it is found to be infeasible or impracticable to use any other approved practice. Jurisdictions covered under the Phase I or II municipal stormwater permits should use variance/exception procedures and criteria as required by their NPDES permit. 9. Ecology finds that the CDS, sized according to the table above, could also provide water quality benefits in retrofit situations. CDS systems shall comply with these conditions: 1. Design, assemble, install, operate, and maintain CDS Systems in accordance with s and the Ecology decision and conditions specified herein. Ecology recommends use of the inspection and maintenance schedule included as Attachment 1. 2. Discharges from the CDS System shall not cause or contribute to water quality standards violations in receiving waters. 3. Contech commits to testing the QAPP accepted by Ecology on September 17, 2014 for attaining a GULD for Oil Treatment. Ecology must review and approve additional QAPPs for each CULD field site in Washington State. Choose sites to reflect the 4. Contech shall complete all required testing and submit a TER on pretreatment and oil and grease removal for Ecology review by September 15, 2017. 5. Contech may request Ecology to grant deadline or expiration date extensions, upon showing cause for such extensions. Applicant: Contech Engineered Solutions Applicant Address: 11835 NE Glen Widing Drive Portland, OR 97220 Application Documents: Contech Stormwater Solutions Application to: Washington State Department of Ecology Water Quality Program for General Use Level Designation Pretreatment Applications and Conditional Use Level Designation Oil Treatment of the Continuous Deflective Strynchuk, Royal, and England, The Use of a CDS Unit for Sediment Control in Brevard County. Walker, Allison, Wong, and Wootton, Removal of Suspended Solids and Associated Pollutants by a CDS Gross Pollutant Trap , Cooperative Research Centre for Catchment Hydrology, Report 99/2, February 1999 From Roads to Rivers Gross Pollutant Removal from Urban Waterways, Cooperative Research Centre for Catchment Hydrology, Report 98/6, May 1998 Quality Assurance Project Plan CDS® for Oil Treatment Performance Evaluation received by Ecology January 15th 2013. CDS with Sorbents Preliminary Report received by Ecology October 15, 2015. General use level designation as a pretreatment device and conditional use level designation as an oil and grease device Stormwater Management Manual for Western Washington. Based on laboratory trials, the System will achieve 50% removal of total suspended solids with d50 of 50-50 of 125- design flowrate with typical influent concentration of 200-mg/L. Contech can design t concentration less than 10 mg/L for total petroleum hydrocarbons. The CDS system equipped with standard oil baffle and addition of oil sorbent is effective in control of oil and maintain the TPH level below the Ecology-specified level (<10-mg/L) for applications in typical urban runoff pollution control. Recommendation: Ecology finds that: The system, sized per the table above, should provide, at a minimum, equivalent performance to a presettling basin as defined in the most recent Stormwater Management Manual for Western Washington, Volume V, Chapter 6. Findings of Fact: 1. Laboratory testing was completed on a CDS 2020 unit equipped with 2400-m screen using OK-110 sand (d50 of 106-at flowrates ranging from 100 to 125% of the design flowrate (1.1 cfs) with a target influent of 200 mg/L. Laboratory results for the OK-110 sand showed removal rates from about 65% to 99% removal with 80% removal occurring near 70% of the design flowrate. 2. Laboratory testing was completed on a CDS 2020 unit equipped with 2400-m screen using 50 of 20 to 30-00 to 125% of the design flowrate (1.1 cfs) with a target influent of 200 mg/L. Laboratory results for the sediment showed removal rates from about 42% to 94% removal with 80% removal occurring at 5% of the design flowrate. 3. Laboratory testing was completed on a CDS 2020 unit equipped with 4700-m screen using OK-110 sand (d50 of 106-ng from 100 to 125% of the design flowrate (1.1 cfs) with a target influent of 200 mg/L. Laboratory results for the OK-110 sand showed removal rates from about 45% to 99% removal with an average removal of 83.1%. 4. Laboratory testing was completed on a CDS 2020 unit equipped with 4700-m screen using 50 of 20 to 30-00 to 125% of the design flowrate (1.1 cfs) with a target influent of 200 mg/L. Laboratory results for the sediment showed removal rates from about 39% to 88% removal with an average removal of 56.1%. 5. Contech completed laboratory testing on a CDS2020 unit using motor oil at flowrates ranging from 25% to 75% of the design flowrate (1.1 cfs) with influents ranging from 7 to 47 mg/L. Laboratory results showed removal rates from 27% to 92% removal. A spill test was also run at 10% of the design flowrate with an influent of 82,000 mg/L with an average percent capture of 94.5% 6. Independent parties in California, Florida, and Australia completed various field studies. Field studies showed the potential for the unit to remove oils and grease and total suspended solids, and capture 100% gross solids greater than the aperture size of the screen under treatment flow rate. 7. Contech is conducting a field evaluation of a CDS2015 with Sorbents for oil and grease removal. To date, the unit has been evaluated at flow rates ranging from 42% to 119% of the design flow rate (0.28cfs) with influent motor oil concentrations ranging from 0.46 to 64.8 mg/L (median of 4.5 mg/L; mean of 12.6 mg/L). A preliminary report showed a mean motor oil removal efficiency of 72%, with a UCL95 for effluent concentration of 0.75 mg/L. 8. CDS Technology has been widely accepted with over 6,200 installations in the United States and Canada. There are over 1,380 installations in Washington and Oregon. Technology Description: Engineers can download a technology description www.conteches.com Recommended Research and Development: Ecology encourages Contech to pursue continuous improvements to the CDS system. To that end, Ecology makes the following recommendations: 1. Conduct testing to quantify the flowrate at which resuspension occurs. 2. Conduct testing on various sized CDS units to verify the sizing technique is appropriate. 3. Test the system under normal operating conditions, pollutants partially filling the swirl concentrator. be representative of typical performance. Contact Information: Applicant Contact: Sean Darcy Contech Engineered Solutions (800) 548-4667 sdarcy@conteches.com Applicant website: http://www.conteches.com/ Ecology web link: http://www.ecy.wa.gov/programs/wq/stormwater/newtech/index.html Ecology: Douglas C. Howie. P.E. Department of Ecology Water Quality Program (360) 407-6444 douglas.howie@ecy.wa.gov Revision History Date Revision July 2008 Original use-level-designation document February 2010 Reinstate C Oil Control PULD August 2012 Revised design storm criteria, revised oil control QAPP, TER, and Expiration dates December 2012 Revised Contech Engineered Solutions Contact Information; Added QAPP for Oil Treatment May 2013 Revised model numbers in Attachment 1 April 2014 Revised Due dates for QAPP and TER and changed Expiration date August 2014 Revised Due dates for QAPP and TER and changed Expiration date July 2016 Updated Oil Control PULD to a CULD based on preliminary field monitoring results Attachment 1 CDS Stormwater Treatment Unit Checklist Frequency Drainage System Feature Problem Conditions to Check For Recommended Action Date Inspected* J F M A M J J A S O N D M & S Inlet Chamber Accumulation of trash, debris and sediment Trash blocking inlet throat opening & sediment accumulation exceeds 2 inches Remove trash, debris, and sediments. Inlet throat opening should not be blocked by any materials. A Screen Blockage/Damage Biological growth on the surface of the screen; broken screen or loose screen Powerwash screen to clean the surface and Contact CSS for screen repair (broken or loose) M Separation Chamber Trash and floatable debris accumulation Excessive trash and floatable debris accumulation on the surface in separation chamber Remove trash or other floatable debris in separation chamber to minimum level A Oil Baffle** Damaged Baffles corroding, cracking, warping, and/or showing signs of failure as determined by maintenance/inspection person. Baffles repaired or replaced to design specifications. M & S Oil sorbent** Consumed Change of color in sorbents (fresh sorbents typically appears to be white or light yellow) Remove spent oil sorbent and replace with new sorbent M Sediment Depth in the Sump Sediment accumulation Sediment accumulation exceeds 75-85% sump depth (varies depending on the Model, see attached Table) Sediment in sump should be removed using vactor truck. M Sediment Depth behind the screen Sediment accumulation Sediment accumulation exceeds 2 inches behind the screen Sediment behind the screen should be removed using vactor truck. Frequency Drainage System Feature Problem Conditions to Check For Recommended Action Date Inspected* J F M A M J J A S O N D M Access Cover (MH, Grate, cleanout) Access cover Damaged/ Not working One maintenance person cannot remove lid after applying 80 pounds of lift, corrosion of deformation of cover. Cover repaired to proper working specifications or replaced. A Inlet and Outlet Piping Damaged Piping/Leaking Any part of the pipes are crushed or damaged due to corrosion and/or settlement. Pipe repaired or replaced. A Concrete Structure Concrete structure (MH or diversion vault) has cracks in wall, bottom, and damage to frame and/or top slab. Cracks wider than ½ inch or evidence of soil particles entering the structure through the cracks, or maintenance/inspection personnel determine that the structure is not structurally sound. Structure repaired so that no cracks exist wider than 0.25 inch at the joint of inlet/outlet pipe. A Access Ladder Ladder rungs unsafe Maintenance person judges that ladder is unsafe due to missing rungs, misalignment, rust, or cracks. Ladder must be fixed or secured immediately. Ladder meets design standards and allows maintenance persons safe access. *Note dates when maintenance was performed and type of maintenance performed in notes section below. **May not be present on all units. (M) Monthly from November through April. (A) Once in late summer (preferable September) (S) After any major storm (use 1-inch in 24 hours as a guideline). If you are unsure whether a problem exists, please contact a Professional Engineer. Notes: Maintenance of CDS stormwater treatment unit typically does not require confined space entry. Visual inspections should be performed above ground. If entry is required, it should be performed by qualified personnel. Refer to CDS Unit Operation & Maintenance Guideline for maintenance details. Typically the CDS unit needs to be inspected before and after the rainfall seasons (November to April), after any major storms (>1-inch within 24 hour) and in the event of chemical spills. Contact Contech Engineered Solutions (CSS) (800-548-4667) if there is any damage to the internal components of CDS Unit. CDS Maintenance Indicators and Sediment Storage Capacities CDS Model Diameter Distance from Water Surface to Top of Sediment Pile Sediment Storage Capacity ft m ft m yd3 m3 CDS2015 5 1.5 3.0 0.9 1.3 1.0 CDS2020 5 1.5 3.5 1.1 1.3 1.0 CDS2025 5 1.5 4.0 1.2 1.3 1.0 CDS3020 6 1.8 4.0 1.2 2.1 1.6 CDS3030 6 1.8 4.6 1.4 2.1 1.6 CDS3035 6 1.8 5.0 1.5 2.1 1.6 CDS4030 8 2.4 4.6 1.4 5.6 4.3 CDS4040 8 2.4 5.7 1.7 5.6 4.3 CDS4045 8 2.4 6.2 1.9 5.6 4.3 Ecology home > Water Quality > Stormwater > Evaluation of Emerging Stormwater Treatment Technologies > Stormwater Treatment Technologies Stormwater Treatment Technologies Approved through TAPE and CTAPE Ecology certification of a product through the TAPE program does not require local jurisdictions to accept the product for use or allow use within their boundaries. In addition to Ecology certification, local jurisdiction approval is required for installation of treatment technologies with Pilot (PULD), Conditional (CULD), or General (GULD) Use Level Designations. Local jurisdictions may choose not to accept products approved through TAPE, or may require additional testing prior to consideration for local approval. Ecology will accept written comments on technologies that have received General Use Level Designations (GULD). Unless and until a technology has received a GULD, the submitted documents are considered work product and not available for public release. You may request copies of the final documents by filling out a Public Records Request form. Information needed for all record requests include: requester's name, phone number, company, date of request, date of requested review, report name and type of file. Emerging Technologies The following table lists the devices that have received a designation through the TAPE process. Click on the tabs above the table to narrow the table down to devices that meet your target treatment goal (Pretreatment, Oil, Enhanced, Basic, Phosphorous or Construction) You can also narrow the devices shown in the table based on the "Search:" entered in the box. Sort by clicking on column headings. If you want to sort on multiple headin hold the shift key while you click on multiple headings. Types of Stormwater Treatment Technologies Approved through TAPE AND CTAPE Ecology certification of a product through the TAPE program does not require local jurisdictions to accept the product for use or allow use within their boundaries. In addition to Ecology certification, local jurisdiction approval is required for installation of treatment technologies with Pilot (PULD), Conditional (CULD), or General (GULD) Use Level Designations. Local jurisdictions may choose not to accept products approved through TAPE, or may require additional testing prior to consideration for local approval. The following are the types of treatment technologies. Follow the link to each for more information, including information for the manufacturers who make them. Pretreatment Pretreatment is generally applied to: • Project sites using infiltration treatment • Treatment systems where needed to assure and extend performance of the downstream basic or enhanced treatment facility All Pretreatment Oil Enhanced Basic Phosphorus Construction Search: Showing 1 to 79 of 79 entries AquaShield™, Inc.Aqua-Filter System Oil Treatment Pilot Use Level**Mark Miller More 2/18/2015 AquaShield™, Inc.Aqua-Filter System Basic Treatment Pilot Use Level**Mark Miller More 2/18/2015 AquaShield™, Inc.Aqua-Filter System Enhanced Treatment Pilot Use Level**Mark Miller More 2/18/2015 AquaShield™, Inc.Aqua-Filter System Phosphorus Treatment Pilot Use Level**Mark Miller More 2/18/2015 AquaShield™, Inc.Aqua-Swirl System Pretreatment General Use Level Mark B. Miller More 8/11/2014 AquaShield™, Inc.Aqua-Swirl System Basic Treatment Conditional Use Level Mark B. Miller More 8/11/2014 BaySaver Technologies, Inc.BayFilter®Enhanced Treatment Conditional Use Level Daniel Figola More 1/21/2016 BaySaver Technologies, Inc.BayFilter®Basic Treatment General Use Level Daniel Figola More 1/21/2016 BaySaver Technologies, Inc.BayFilter® Phosphorus Treatment Conditional Use Level Daniel Figola More 1/21/2016 Manufacturer Device Name Treatment Type Use Designation Company Contact Information Status # of Installations Pretreatment Pretreatment is generally applied to: • Project sites using infiltration treatment • Treatment systems where needed to assure and extend performance of the downstream basic or enhanced treatment facility Intended to achieve 50% removal of fine (50 micron-mean size) and 80% removal of coarse (125-micron-mean size) total suspended solids for influent concentrations greater than 100 mg/L, but less than 200 mg/L. For influent concentrations less than 100 mg/L, the facilities are intended to achieve effluent goals of 50 mg/L of fine and 20 mg/L of coarse total suspended solids. Oil Treatment Intended to achieve the goals of no ongoing or recurring visible sheen and a daily average total petroleum hydrocarbon concentration no greater than 10 mg/L with a maximum of 15 mg/L for discrete (grab) samples. Basic Treatment Intended to achieve a goal of 80% removal of total suspended solids for an influent concentration range of 100 mg/L to 200 mg/L. For influent concentration less than 100 mg/L the effluent goal is 20 mg/L total suspended solids. For influent concentrations greater than 200 mg/L a higher treatment goal is intended. Technologies listed in this section with a GULD designation are also approved for Pre-treatment in accordance with Volume V Section 6.2 of the Stormwater Management Manual for Western Washington (SWMMWW) and Section 5.2.1 of the Stormwater Management Manual for Eastern Washington (SWMMEW). Enhanced Treatment Intended to achieve a higher level of treatment than basic treatment. Enhanced treatment is targeted at removing dissolved metals. Phosphorous Treatment Intended to achieve a goal of 50% total phosphorus removal for an influent concentration range of 0.1 to 0.5 mg/L as well as achieving basic treatment. Construction Site Construction treatment is intended to achieve the goals of a maximum of 5 NTUs above background (background of 50 NTUs or less), not more than 10% increase in turbidity where background is greater than 50 NTUs, pH of 6.5-8.5 in freshwater and 7.0-8.5 in marine water, and no visible oil sheen. Ecology's use level designation's are as follows: GULD - General Use Level Designation General Use Level Designation (GULD) technologies may be used in Washington subject to use level designation conditions. CULD - Conditional Use Level Designation Conditional Use Level Designation (CULD) allows continued use of the technology for a specified time period during which field testing must be completed by the vendor and/or developer. Not all CULD technologies are required to conduct field testing. Units that are in place do not have to be removed after the specified time period. Use is subject to the use level designation conditions. PULD - Pilot Level Use Designation Pilot Use Level Designation (PULD) allows limited use of the technology to allow field testing to be conducted. PULD technologies may be installed provided that the vendor and/or developer agree to conduct field testing based on the TAPE at all installations. Please note: Government entities covered by a municipal stormwater NPDES permit must notify Ecology when a PULD technology is proposed (form is available at PULD.pdf). For influent concentration less than 100 mg/L the effluent goal is 20 mg/L total suspended solids. For influent concentrations greater than 200 mg/L a higher treatment goal is intended. Technologies listed in this section with a GULD designation are also approved for Pre-treatment in accordance with Volume V Section 6.2 of the Stormwater Management Manual for Western Washington (SWMMWW) and Section 5.2.1 of the Stormwater Management Manual for Eastern Washington (SWMMEW).