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Home My WebLink About2133 TIMBERLINE RD., OFFICE & RESTAURANT - MAJOR AMENDMENT - MJA150009 - SUBMITTAL DOCUMENTS - ROUND 1 - DRAINAGE REPORT2133 TIMBERLINE - LOT 11 Appendix A Impervious Areas SOUTH TIMBERLINE ROAD FF= 4946.70 FND #4 REBAR w/ RPC LS 37987,NE DESIGN BY OTHER (FOR REFERENCE ONLY) FND #4 REBAR FND #4 REBAR w/ RPC LS 33106,KSI FND #4 REBAR w/ RPC LS 33106,KSI w/ RPC LS 37987,NE FND #4 REBAR w/ RPC LS 34995,KSI FND NAIL & SHINER LS 34995,KSI (FOR REFERENCE ONLY) EXISTING 8" WIDE MASONRY WALL 309 C603 3' CONCRETE PAN PROPOSED BIO SWALE CHANNEL 308 C603 CURB CUT MATCH EXISTING PROPOSED STEP POROUS PAVEMENT ROOF DRAIN TO BIO-SWALE 2.49 POROUS PAVEMENT 49'-10" 2133 TIMBERLINE - LOT 11 Appendix B Erosion Control Report 2133 TIMBERLINE - LOT 11 PROJECT ECR Page 1 of 5 APPENDIX A – EROSION CONTROL REPORT A. Proposed Construction Area i. Developed Conditions – The proposed site is located at the northwest corner of the Timberline Rd. and Nancy Gray Ave., in Fort Collins. Currently, the proposed site development area contains an established detention pond and outlet along the eastern edge of the site. The proposed building will have an 85’ setback from Timberline road. Vegetative Cover has been established in the detention pond. ii. Rainfall Erodibility – Rainfall erosion will be controlled through use of temporary construction BMPs until permanent vegetative cover has reached 70% percent of groundcover. Opportunities for rainfall erosion include sheet flow across the site during earthwork operations and utility installations. iii. Proposed Rainfall Erosion and Sediment Control Methods – Primary methods will include silt fence installation on the east and south lot limits and inlet and channel protection with gravel bags to both slow and filter runoff water before it enters any structures or channel outletting to the detention pond. A stabilized construction entrance will be utilized at the site ingress/egress point. iv. Site Phasing and BMP Installation Schedule – The site construction will take place in the following order: 1. Installation of site BMPs i. Stabilized Construction Entrance ii. Silt Fence iii. Inlet protection on existing inlets 2. Site Utility Installation i. Installation of inlet control in new inlets and channels as they are finished 3. Building Foundation and Earthwork 4. Vertical building construction and ongoing utilities 5. Finished site grading, hardscaping and paving 6. Landscaping and Irrigation installation B. Stormwater Management Controls i. SWMP Administrator 1. During construction, the SWMP administrator will be the earthwork and utility contractor. Until such time as that contractor has been selected, the SWMP Administrator will be Bill Renz, Project Manager-Ditesco. He will be responsible 2133 TIMBERLINE - LOT 11 PROJECT ECR Page 2 of 5 for developing, implementing, maintaining, and revising the SWMP and will address all aspects of the site SWMP. i. Bill Renz – Ditesco Project Manager 1315 Oakridge Drive, Suite 120 Fort Collins, CO 80525 970.219.0157 ii. Identification of Potential Pollution Sources 1. All disturbed and stored soils – there will be disturbed soils onsite through excavation and vehicle/equipment movement. Soils will be stockpiled/permanently embanked onsite. Excess soil will be transported offsite. Soil stockpiles left undisturbed for a period greater than 30 days will be mulched and seeded. 2. Vehicle tracking of sediments – most vehicle and equipment travel will risk sediment tracking until final pavement is installed. A stabilized construction entrance will be used for the site. Surrounding roadways will be swept if sediment is tracked onto the roadway. 3. Management of contaminated soils – soils may be contaminated through spills during fueling operation or equipment oil leaks. The contractor will keep spill kits onsite during the project and will excavate and remove contaminated kit materials and soil and dispose through the proper waste stream. 4. Loading and unloading operations – Loading and unloading operations will take place within the site for materials to be incorporated in the project. Vehicles will use the stabilized entrance for ingress/egress. 5. Outdoor storage activities (building materials, fertilizers, chemicals, etc.) Storage of materials will be in a designated area. Any chemicals used during construction, concrete cure, etc., will be stored on secondary containment. 6. Vehicle and equipment maintenance and fueling – Maintenance and fueling will be done in the field at the location of the equipment on grade. Spills will be addressed through item 3 of this section. 7. Significant dust or particulate generating processes – dust may be generated from vehicle tracking or portions of backfill operation. The site will be kept from producing dust through watering of any exposed soils. 8. Routine maintenance activities involving fertilizers, pesticides, detergents, fuels, solvents, oils, etc. – Fueling, lubrication, and maintenance operations will take place within the project limits on grade. No fertilizers pesticides or detergents are planned for use on site. 9. On-site waste management practices (waste piles, liquid wastes, dumpsters, etc.) Roll-off Dumpsters will be utilized for the site and will be hauled off at 2133 TIMBERLINE - LOT 11 PROJECT ECR Page 3 of 5 regular intervals. Any liquid waste generated will be contained. Concrete process water will be addressed through the next item in the section. 10. Concrete truck/equipment washing, including the concrete truck chute and associated fixtures and equipment – A concrete wash out will be utilized for all concrete placement operations. A sign will be posted clearly showing the washout location. 11. Dedicated asphalt and concrete batch plants – no asphalt or concrete batch plants will be erected onsite. 12. Non-industrial waste sources such as worker trash and portable toilets – Portable toilets will be staged onsite. Trash receptacles will be emptied regularly. 13. Other areas or procedures where potential spills can occur – No other areas qualify for this section. C. Dryland Vegetation i. All areas will be hardscaped, sodded, or mulched. Existing open areas have already been seeded. D. Detailed Sequence of Construction Activities i. It is anticipated that this project will begin construction during 2016 and will be completed within a year. ii. Installation of site BMPs 1. Stabilized Construction Entrance 2. Silt Fence 3. Inlet protection on existing inlets iii. Site Utility Installation 1. Installation of drainage facilities 2. Installation of inlet control/BMPs in new inlets and channels as they are finished iv. Building Foundation and Earthwork v. Vertical building construction and ongoing utilities vi. Finished site grading, hardscaping and paving vii. Landscaping and Irrigation installation 1. Seeding and mulching 2. Tree planting 3. Shrub planting viii. Vegetative cover establishment period ix. Removal of silt fence and inlet protection x. BMPs will be inspected for effectiveness and maintained after each runoff event and every 14 days at a minimum during construction. E. Erosion Control Security Calculations 2133 TIMBERLINE - LOT 11 PROJECT ECR Page 4 of 5 Project: Disturbed Acres: 1.31 EROSION CONTROL BMPs Units Estimated Quantity Unit Price Total Price LF 440 $2.50 $1,100.00 EA 3 $150.00 $450.00 EA 1 $750.00 $750.00 EA 1 $1,100.00 $1,100.00 Sub-Total: $3,400.00 1.5 x Sub-Total: $5,100.00 Amount of security: $5,100.00 Total Acres x Price/acre: $1,299.99 $995.00 Sub-Total: $1,299.99 1.5 x Sub-Total: $1,949.98 Amount to Re-seed: $1,949.98 Minimum escrow amount: $3,000.00 Erosion Control Escrow: $5,100.00 Reseeding Amount Miniumum Escrow Amount Timberline Lot 11 Unit Price of Seeding per acre: “The amount of the security must be based on one and one-half times the estimate of the cost to install the approved measures, or one and one-half times the cost to re-vegetate the disturbed land to dry land grasses based upon unit cost determined by the City's Annual Revegetation and Stabilization Bid, whichever is greater. In no instance, will the amount of security be less than one thousand five hundred dollars ($1,500) for residential development or three thousand dollars ($3,000) for commercial development” Inlet Protection (IP) Concrete Washout (CW) (add all other BMPs for the site in this list) Final Escrow Amount Example Erosion and Sediment Control Escrow/Security Calculation for The City of Fort Collins BMP Amount Silt Fence (SF) Vehicle Tracking Control (VTC) SOUTH TIMBERLINE ROAD FF= 4946.70 FND #4 REBAR w/ RPC LS 37987,NE DESIGN BY OTHER (FOR REFERENCE ONLY) FND #4 REBAR FND #4 REBAR w/ RPC LS 33106,KSI FND #4 REBAR w/ RPC LS 33106,KSI w/ RPC LS 37987,NE FND #4 REBAR w/ RPC LS 34995,KSI FND NAIL & SHINER LS 34995,KSI DESIGN BY OTHER (FOR REFERENCE ONLY) SF SF VTC CIP3 EXISTING 8" WIDE CONCRETE WALL IP IP C301 6 EROSION CONTROL PLAN CALL UTILITY NOTIFICATION CENTER OF COLORADO Know what's R City of Fort Collins, Colorado Date Date Date Date Date Date City Engineer Traffic Engineer Parks & Recreation Stormwater Utility Water & Wastewater Utility SHEET NO. 15-01-29 PROJECT NO. SHEET INDEX DESIGNED BY: DRAWN BY: APPROVED BY: SCALE: SHEET SUBSET: TIMBERLINE CENTER SECOND FILING LOT 1 DATE: NONE December 21, 2015 K. Meyer R. Bunner K. Meyer NOT FOR CONSTRUCTION 2133 TIMBERLINE - LOT 11 Appendix C Drainage Sub-Basins BM 4-07 SOUTH TIMBERLINE ROAD DESIGN BY OTHER (FOR REFERENCE ONLY) EXISTING 8" WIDE MASONRY WALL FF= 4946.70 3 2 C701 14 DRAINAGE EXHIBIT CALL UTILITY NOTIFICATION CENTER OF COLORADO Know what's R City of Fort Collins, Colorado Date Date Date Date Date Date City Engineer Traffic Engineer Parks & Recreation Stormwater Utility Water & Wastewater Utility SHEET NO. 15-01-29 PROJECT NO. SHEET INDEX DESIGNED BY: DRAWN BY: APPROVED BY: SCALE: SHEET SUBSET: TIMBERLINE CENTER SECOND FILING LOT 1 DATE: NONE December 21, 2015 K. Meyer R. Bunner K. Meyer NOT FOR CONSTRUCTION 1"=30' 30' 0 30' 60' 90' LEGEND: NOTES: A A FOR DRAINAGE REVIEW ONLY NOT FOR CONSTRUCTION 1"=20' 20' 0 20' 40' 60' LEGEND: SF VTC NOTES: IP