No preview available
HomeMy WebLinkAboutRS_TIR_240215_v1Sazei Design Group LLC 16608 110TH AVE. N.E.KIRKLAND, WA. 98033 2 TEL. (425) 214-2280FAX. (425) 889-6887 Renton Highland 6-Lot Short Plat LUA23-------- Drainage Design Report, O&M Manual & SWPP Report Property Location: 5815 NE 8th Street Renton, WA October 20, 2023 Prepared for: Amin Gilani Sazei Design Group LLC Page i TABLE OF CONTENTS SECTION 1 PROJECT OVERVIEW 1 o Figure 1: TIR Worksheet 2 o Figure 2: Site Location Map 7 o Figure 3: Existing Site Characteristic, Drainage Basins, and Sub-Basins 8 SECTION 2 CONDITIONS & REQUIREMENTS SUMMARY 9 ❖King County Requirements SECTION 3 OFF-SITE ANALYSIS 10 ❖Sensitive Areas Map 11 ❖Drainage Complaint Map 12 o Figure 4: Upstream and Downstream Flow Map 14 o Figure 5: Downstream System Table 15 SECTION 4 FLOW CONTROL & WATER QUALITY ANALYSIS AND DESIGN 15 o Figure 6: Soils Logs 16 o Figure 7: Developed Conditions Map 16 o Infiltration Requirements 17 o Soil Management Plan 18 SECTION 5 CONVEYANCE SYSTEM ANALYSIS AND DESIGN 18 SECTION 6 SPECIAL REPORTS AND STUDIES 21 SECTION 7 OTHER PERMITS 21 SECTION 8 SWPPP ANALYSIS AND DESIGN 21 SECTION 9 BONDS, SUMMARIES AND COVENANTS 23 SECTION 10 OPERATIONS AND MAINTENANCE MANUAL 23 ❖Operations and Maintenance Procedures Appendix A Pipe Conveyance Charts Pump Charts WWHM12 Results Renton Highlands 6-Lot SP TIR October 20, 2023 1 | P a g e TIR SECTION 1 PROJECT OVERVIEW Project: Renton Highlands 6-Lot short plat Site Information: The proposed project is the construction of a six lot short plat. The site is located at 5815 NE 8th Street. More generally the site is located within SW ¼ of Section 11, Township 23 North, Range 05 East, W.M., (Parcel# 1123059068) see Figure 2: Vicinity Map. The site is bordered by residential properties on the north, south, east, and west sides of the site. Pre-developed Site Conditions: The site is 84,070 sf in size, is vacant with a cover of trees. The lot is flat with slopes less that 2%. There are no known sensitive areas on-site. Please refer to Figure 3: Existing Conditions Map.. Developed Site Conditions: The project will consist of construction of a 6-lot short plat with the average lot size of 9,000 sf. Runoff from the site will drain to an onsite vault for storage and discharge. Half street frontage improvement will be required on Pasco Place NE consisting of curbs, gutters and sidewalks. The city is only requiring a sidewalk fronting NE 8th street. The site will be served by public water and sewer. Please refer to Figure 7: Developed Conditions Map The total PGHS area is over 5,000 requiring enhanced basic water quality in the form of a Filterra filter system. Renton Highlands 6-Lot SP TIR October 20, 2023 2 | P a g e Figure 1: TIR Worksheet Renton Highlands 6-Lot SP TIR October 20, 2023 3 | P a g e Figure 1: TIR Worksheet Renton Highlands 6-Lot SP TIR October 20, 2023 4 | P a g e Figure 1: TIR Worksheet Renton Highlands 6-Lot SP TIR October 20, 2023 5 | P a g e Figure 1: TIR Worksheet filterra Renton Highlands 6-Lot SP TIR October 20, 2023 6 | P a g e Figure 1: TIR Worksheet Renton Highlands 6-Lot SP TIR October 20, 2023 7 | P a g e Renton Highlands 6-Lot SP TIR October 20, 2023 8 | P a g e Figure 2: Site Location Map Renton Highlands 6-Lot SP TIR October 20, 2023 9 | P a g e Figure 3: Drainage Basins, Sub-basins and Site Characteristics Renton Highlands 6-Lot SP TIR October 20, 2023 10 | P a g e TIR SECTION 2 CONDITIONS & REQUIREMENTS SUMMARY The City of Renton has adopted the City of Renton 2022 storm water manual which governs the design of stormwater systems to serve this project. The Core and Special Requirements are being met in the following manner: City of Renton 2022 Storm Water Manual Core Requirements: 1.Discharge at the Natural Location Under 1.2.1-2, The surveyed contours show the site generally drains to the south-west. The proposed discharge will be to the storm system in Pasco Place NE which drains to the south-west, thereby maintain the natural discharge location 2.Off-site Analysis The Level 1 downstream analysis showed that there will be minimal impacts on the downstream conditions, since the site proposes to use detention and drainage BMPs to address all stormwater runoff. 3.Flow Control The site will meet the flow control standards using on-site detention in the form of a detention vault and on site BMPs. 4.Conveyance System The site will tie into an existing 12-inch storm pipe in Pasco street. The site flow is minimal and will only be served by 4-catch basins and 12” storm pipes. 5.Temporary Erosion & Sediment Control All TESC measures proposed will conform to the 2022 Renton Stormwater Manual during construction. Refer to Section 9 of this TIR for additional information. The measures shown on the TESC plans include: Clearing limits, sediment control, soil stabilization, BMP’s maintenance and construction sequence 6.Maintenance & Operations Maintenance and Operations manual has been provided at the back of this report. Note that a “Declaration of Covenant” may be required. See Section 10. 7.Financial Guarantees & Liability A completed bond quantity worksheet maybe required 8.Water Quality The total PGHS area is over 5,000 sf and therefore, water quality in the form a Contech Filterra system is proposed to meet the enhanced basic treatment requirement. Refer to Section 4 of this report. Renton Highlands 6-Lot SP TIR October 20, 2023 11 | P a g e 9.Flow Control BMP’s The site was reviewed for on-site BMP’s and it was determined that some on-site BMPs and detention is applicable for the site improvements. City of Renton 2022 storm water manual Special Requirements: 1.Other Adopted Area-Specific Requirements There are no area-specific requirements for this project site. 2.Floodplain/Floodway Delineation A review of the FEMA FIRM panels for the site, shows that the site and area of work is outside any floodplain areas and site does not contain any floodplain/floodway delineations. 3.Flood Protection Facilities There are no flood protection facilities located on or directly adjacent to the site. 4.Source Control The final site does not meet the threshold for source control requirements. 5.Oil Control The final site does not meet the threshold for oil control requirements. 6.Aquifer Protection Area None known. REVIEW OF BMP’S ROOFS: 1.Full Dispersion in accordance with BMP T5.30 is infeasible because a 65 to 10 ratio of forested or native vegetation area to impervious area cannot be achieved. Downspout Full Infiltration Systems in accordance with BMP T5.10A is infeasible since the soils consist of dense to very dense sand/silt at 1 to 4 feet as noted by the geotechnical engineer. 2.Rain Gardens in accordance with BMP T5.14A and Bioretention in accordance with Chapter 7 is infeasible since the soils consist of dense to very dense sand/silt at 1 to 4 feet as noted by the geotechnical engineer and there is no positive outfall for the BMP.. 3.Downspout Dispersion Systems in the form of dispersion trenches in accordance with BMP T5.10B are not feasible since the site cannot meet the required flow paths. 4.Perforated Sub-out Connection will be used Renton Highlands 6-Lot SP TIR October 20, 2023 12 | P a g e Other Hard Surfaces: 1.Full Dispersion in accordance with BMP T5.30 in Volume V, Chapter 5 of this manual. Is not feasible since site cannot meet the 100-ft flow paths for the site. 2.Permeable pavement in accordance with BMP T5.15 in Chapter 5 of Volume V, (Permeable Pavement will be used on the driveways.) City of Renton Conditions FINDINGS/CONCLUSIONS: To be determined TIR SECTION 3 OFF-SITE ANALYSIS TASK 1 – STUDY AREA DEFINITIONS AND MAPS Overview This section of the TIR is a Level 1 Downstream Analysis per the City of Renton 2022 storm water manual Section 2.3. The site is 84,070 sf in size and contains an existing cover of trees and landscaping . Upstream Drainage Analysis / Upstream Contributing Area Based on the site contours, all upstream off-site runoff is intercepted by NE 8th Street, therefore little if any off-site runoff enters onto the site. TASK 2 – RESOURCE REVIEW Adopted Basin Plan The site is located in the May Creek Sub-basin which is with in the Cedar River/Lake Washington Basin Community Plan The site is located in the Cedar River/Lake Washington Basin Basin Reconnaissance Summary Report We are not aware of a current Basin Reconnaissance Summary Report for this area. Critical Drainage Area The site is not considered to be within a critical drainage area as defined by the City of Renton 2022 storm water manual A review of the DOE “water quality assessment” web site shows that the section of the site it discharges into is not on the DOE 303(d) list. Renton Highlands 6-Lot SP TIR October 20, 2023 13 | P a g e Sensitive Area Maps Per City of Renton the site does not contain any sensitive areas.. Soils Survey The Geotech report prepared for the site, shows the soils to be a dense sand-silt Wetland / Stream Inventory There are no wetlands or stream noted A review of the FEMA FIRM panels for the site, shows that the site is outside any floodplain areas and site does not contain any floodplain/floodway delineations. Drainage Complaints There appeared to be 14-drainage complaints downstream of the sub-basin, and all were closed by 2006. (See “Drainage Complaints Map”) TASK 3 – FIELD INSPECTION A Level 1 site inspection was performed on October 10, 2023. The weather was partly cloudy The inspection focused on identifying potential downstream drainage and water quality problems As previously indicated, the site slopes to the south with all runoff leaving the site and discharging onto the adjacent property to the south. TASK 4 – DRAINAGE SYSTEM DESCRIPTION, AND PREDICTED DRAINAGE AND WATER QUALITY PROBLEMS OFFSITE LEVEL ONE DOWNSTREAM ANALYSIS 1.The runoff leaves the site and flows into the storm system on NE 7th Place where it flows west for 700 feet to Nile Avenue NE. From here it flows south for a distance of 2,200 to the intersection of Nile Ave NE and NE 4th Street. The drainage then flows west in the storm drainage system serving NE 4th street for a distance of over 1,300 feet. The total distance covered is just under 1-mile Sub-Basin 1 Predicted Drainage and Water Quality Problems There appeared to be no issues downstream and since detention is provided for the site improvements, the proposed project should have little if any impact on downstream conditions. TASK 5 MITIGATION OF EXISTING OR POTENTIAL PROBLEMS The project proposes to provided detention and water quality to address the storm water runoff from the proposed site improvements, thus mitigating any downstream impacts. Renton Highlands 6-Lot SP TIR October 20, 2023 14 | P a g e Figure 5: Upstream Area and Downstream Flow Map Renton Highlands 6-Lot SP TIR October 20, 2023 15 | P a g e Figure 6: Downstream System Table Renton Highlands 6-Lot SP TIR October 20, 2023 16 | P a g e Drainage Complaints Renton Highlands 6-Lot SP TIR October 20, 2023 17 | P a g e 1)Complaint number 2009-0889 Complaint type FI Date received Problem REM Date closed 12/30/2009 Address 11840 148TH AVE SE 2)Complaint number 2000-0528 Complaint type FCC Date received Problem MMG Date closed 8/29/2000 3)Complaint number 2001-0027 Complaint type C Date received Problem DDM Date closed 2/2/2001 4)Complaint number 1994-1000 Complaint type RN Date received Problem FLOODING Date closed 3/21/1995 Address 11615 148TH AVE SE Parcel 1023059390 Comments LACK OF CONVEYANCE THROUGH PVT PROP 5)Complaint number 1995-0009 Complaint type C Date received Problem EROSION Date closed 1/24/1995 6)Complaint number 1996-0552 Complaint type R Date received Problem FLDG Date closed 4/8/1996 7)Complaint number 1996-0185 Complaint type C Date received Problem FLDG Date closed 2/26/1996 Renton Highlands 6-Lot SP TIR October 20, 2023 18 | P a g e 8)Complaint number 1989-0150 Complaint type C Date received Problem DRNG/ERO Date closed 3/24/1989 9)Complaint number 1988-0790 Complaint type C Date received Problem DRNG Date closed 1/24/1989 10)Complaint number 1999-0151 Complaint type C Date received Problem DRAINAGE Date closed 3/8/1999 11)Complaint number 1989-0776 Complaint type C Date received Problem FLDG Date closed 2/22/1990 12)Complaint number 1995-0104 Complaint type C Date received Problem H2OLEVEL Date closed 2/14/1995 13)Complaint number 1996-0323 Complaint type C Date received Problem WETLAND Date closed 2/26/1996 Address 12227 148TH AVE S 14)Complaint number 2006-0515 Complaint type C Date received Problem RFN Date closed 8/30/2006 15)Complaint number 1996-0880 Complaint type WQC Date received Problem EROSION Date closed 12/3/2008 Renton Highlands 6-Lot SP TIR October 20, 2023 19 | P a g e TIR SECTION 4 FLOW CONTROL & WATER QUALITY ANALYSIS AND DESIGN The project proposes to provide detention to meet the requirements of the 2022 City of Renton Surface Water Design Manual based on the calculations below: The WWHM Ver.12 Hydraulic Simulation Model was used to calculate the pre-developed and developed flows for the Hydrographs for the 2-year and 50-year, 24-hour duration design storm events for the existing and developed conditions. The control structure was sized to release 50-percent of the 2-year peak flow through the 50-year flow in order to provide the required detention for the developed site runoff. The hydrographs were generated using the following information: WWHM12 Input Information •Regional Gage Station: SeaTac •Precip Scale:1.00 •Soils Type:Till Sub-Basin: Existing Site Hydrology The Sub-Basin is 2.00 acres in size The WWHM12 runoff was calculated using existing forested conditions to determine the total allowable release rate from the Existing Site. (See Figure 3: “Existing Site Conditions”). The site soils are identified as Till Type C,. Existing Area: 1.Onsite Area 2.00 acres (forested) Total Area: 2.00 Acres Sub-Basin: Developed Site Hydrology The runoff from the developed site conditions including roof areas, driveways, and landscaping, will be collected and conveyed in catch basins and pipes to the storm water detention vault located along the south side of the site. Discharge from the site will be pumped up and into the existing storm pipe system located on Pasco Place.. (See Figure 6: “Developed Site Conditions”) The total area to be detained 2.00 acres. Renton Highlands 6-Lot SP TIR October 20, 2023 20 | P a g e Impervious Areas: Developed Sub-Basin ▪New Roofs: 6 Total 0.445 acres ▪Driveways 0.083 acres ▪Pasco Place Pavement:0.161 acres ▪Side Walks:0.052 acres ▪Tract Access Drive:0.138 acres Total Impervious Area: 0.879 acres (Impervious) Pervious Area: ▪ Lawn Area/Landscape: Pervious 0.81 acres Total Pervious Area: 0.81 acres (Lawn/Landscape) Total Site Area: 2.00 acres Results of WWHM12 Computer Analysis: Storm Event Mitigated. Site Predev. Site •2-year, return period: 0.018138 cfs 0.030877 cfs •50-year, return period: 0.073620 cfs 0.085596 cfs •100-year, return period: 0.092800 cfs 0.095251 cfs The runoff from the site improvements will be detained and released at the required pre- developed rates. See Appendix A for WWHM12 calculation results. Maintenance Access: The paved access drive to the vault will provide the required maintenance access to the control structure. Detention Calculation Results: A summary of the detention calculations and vault design are shown on the following pages. The concrete vault will provide the required flow control for the site improvements. BMP SELECTION: Due to the site constraints, and soils type the only BMPs that are feasible to use are perforated stub outs prior to discharging into the storm drain system and pervious pavement •Soil Amendment BMP’s: Will be used on site Renton Highlands 6-Lot SP TIR October 20, 2023 21 | P a g e Figure 3: Existing Site Conditions Renton Highlands 6-Lot SP TIR October 20, 2023 22 | P a g e Figure 7: Developed Site Conditions Renton Highlands 6-Lot SP TIR October 20, 2023 23 | P a g e SUB-BASIN: FLOW CONTROL SYSTEM Results From WWHM12 Calculations: Retention/Detention Facility ➢Type Of Facility: Detention Vault ➢Side Slopes:Vert Conc Walls ➢Pond Bottom Width: 67.7 -ft (Actual: 54-ft) ➢Pond Bottom Length: 67.7-ft (Actual: 85-ft) ➢Pond Bottom Area: 4,584- sf (Actual: 4,590-sf) ➢Effective Live Storage Depth: 9.0 ft ➢Live Storage Volume Required: 41,250 cu.-ft ➢Live Storage Volume Provided: 41,310 cu.-ft (at Vault Size Designed) ➢Dead Storage Volume Req’d: 2.292 cu.-ft (at 0.5-ft depth) ➢Dead Storage Volume Provided: 2,298 cu.-ft (at 0.5 ft depth) ➢Water Quality System: Filterra ➢Riser Head: 9.0 ft ➢Riser Diameter: 12.00 inches ➢Number of Orifices:3 Orifices # Height Diameter 1 0.00 ft 0.50 inches (1/2-inch) 2 6.19 ft 1.00 inches (1-inch) 3 7.17 ft 1.36 inches (1-3/8- inch) Over Flow 12" Dia. 9.0 ft 12.00 inches The results of the WWHM12 calculations are included in Appendix A PUMP DESIGN: Per Table 1.2.3.A of Core Requirement #3, under Forested Conditions the discharge must match the peaks for the 50% of the 2-year and 10-year return periods. Per the WWHM12 results: •50% of 2-Year Predeveloped Flow:0.0588 cfs/2 = 0.0294 cfs or 13.0 gpm •10-Year Predeveloped Flow:0.0796 cfs or 35.7 gpm The duplex pump system was designed to match the required flow rates per the table below; Renton Highlands 6-Lot SP TIR October 20, 2023 24 | P a g e The Pump Table above, lists the allowable flow rates in GPM and the required pumps to be used. •Pump 1 Zoeller Model 264 (or equal) @ 13.0 gpm •Pump 2 Zoeller Model 282 (or equal) @ 35.7 gpm •A backup emergency generator is required for the pump system See Appendix B for WWHM12 calculation results and pump tables WWHM12 Flow Results Renton Highlands 6-Lot SP TIR October 20, 2023 25 | P a g e SECTION 5: CONVEYANCE SYSTEM ANALYSIS AND DESIGN The piping and conveyance system for the interception of the drainage from the site was designed to convey the runoff from the 100-year, 24-hour storm event. (See Flow Charts Appendix A) The following conveyance capacity calculations for the on-site systems were calculated using the 100-year developed flow results from Roads, Parking and Driveway’s and the SBUH Method for the storm calculations. Design results: Storm Event Dev. On Site •100-year, return period: 1.40 cfs:Dev flows for 12-inch pipe from the site improvements PIPE CAPACITY: Roadways to the vault The 12- HDPE pipe from the Roadways to vault was sized to handle the runoff from the 100-year storm. (See Appendix A “Pipe Conveyance Charts” Using D.O.T. Chart 35 "Design Charts For Open Channel Flow": 12" HDPE Pipe Slope: 0.50 % Minimum Slope, Mannings: n = .012 100-Year Dev. Flows:1.40 cfs Design Flow Capacity Results: 12" Pipe Capacity: = 2.50 cfs (flowing full) > 1.40 cfs required Velocity: = 3.95 fps > 3.00 fps required Therefore the 12" HDPE is adequate. 12-INCH POND STANDPIPE OVERFLOW: The 12- Stand pipe used as a the vertical over flow for the vault was sized to handle the runoff from the 100-year developed storm. (See Appendix A “Figure III-2.38 “Riser Inflows Curves”) Concrete Vault: Peak Stage above overflow: 0.5 feet from overflow to top of vault lid Capacity Required: 1.40 cfs Capacity Provided: 4.80 cfs Therefore, overflow ok. WATER QUALITY: Landscaping: BMP T5.13 “Post Construction Soil Quality and Depth” The top soils will be stockpile on-site and reused per “Implementation Options #3 per Volume V, Chapter 5, BMP T5.13 “Post Construction Soil Quality and Depth” which requires “Stockpile existing top soils during grading and replace it prior to planting…” In addition, the soils will be required to be tested for organic compliance. (See work sheets on following pages). Renton Highlands 6-Lot SP TIR October 20, 2023 26 | P a g e Roads, Parking & Driveway Water Quality: Water quality will be provided by installing a “Filterra Peak Diversion” (FTPD) filter structure from Contech StormWater Management Inc. Contech Stormwater Management provided the sizing letter on the following page, based on the site plans. Soil Management Plan for “Post Construction Soil Standard” The top soils will be stockpile on-site and reused per “Implementation Options #4b “Amend existing soil in place per the Post Construction Soil Standard” which requires “Stockpile existing top soils during grading and replace it prior to planting…” In addition, the soils will be required to be tested for organic compliance. See the following requirements. Renton Highlands 6-Lot SP TIR October 20, 2023 27 | P a g e Renton Highlands 6-Lot SP TIR October 20, 2023 28 | P a g e Renton Highlands 6-Lot SP TIR October 20, 2023 29 | P a g e TIR SECTION 6 SPECIAL REPORTS AND STUDIES •Structural Vault calculations, TIR SECTION 7 OTHER PERMITS Below is the list of anticipated permits required for this project. Other permits may be required that are not mentioned below. •Building Permit – New apartment building •Structural Vault Permit TIR SECTION 8 CSWPPP ANALYSIS AND DESIGN For the purposes of this report, several standard erosion control procedures will be utilized by the contractor to minimize the amount of erosion and sedimentation perpetuated by the construction of the site. Furthermore, these techniques are proposed for the Construction Stormwater Pollution Prevention Plan (CSWPPP) and should be reviewed and instituted by the onsite contractor. Some of the measures include filter fabric fence, and standard ground cover practices. A construction sequence will also be used to minimize the impacts of erosion due to construction. ESC Plan Analysis and Design (Part A) 1.At 2.0 acres in size, the site is small requiring only minimal ESC measures. The 13- Elements of a Construction CSWPPP listed below, discuss and describe the appropriate ESC measure to be used. 2.Due to the small size of the site, no ESC facilities are proposed. Therefore, no analysis of the site’s ESC facilities was required. The proposed BMPs consist of standard items including: filter fences, construction entrance, CB inlet protection and plastic cover, etc. No sediment traps are proposed. If required, the vault can be used as a temporary sediment pond. 3.The area of the development with any high erosion are minimal and will be controlled by the filter fence around the perimeter of the site. 4.There were no special reports done for the site. 5.No exceptions or modifications are proposed of the “Erosion and Sedimentation Control Standards” Renton Highlands 6-Lot SP TIR October 20, 2023 30 | P a g e THE 13 ELEMENTS OF A CONSTRUCTION CSWPPP 1.Preserve Vegetation/Mark Clearing Limits: The clearing limits are indicated on the plan sheet. Furthermore, clearing and grading will be limited to only areas that need to be disturbed for grading/construction of the road surface to preserve as much natural vegetation as possible. Field marking the clearing limits shall be completed prior to clearing and grubbing activities. BMP's: Preserve Natural Vegetation (VEG) Field Marking Clearing Limits (CL) 2.Establish Construction Access: Access to the construction site shall be limited to the rock construction entrance. The construction entrance shall be extended to provide access to the construction vehicle/equipment staging and employee parking areas. BMP's: Stabilized Construction Entrance (CE) 3.Control of Flow Rates: Storm water detention: No detention is proposed for the site since the increase in volume is minimal 4.Installation of Perimeter Sediment Controls: Sediment control will be provided through a combination of filtration through the surround on-site vegetation, filter fence, straw bails, BMP's: Silt Fence (FF) 5.Soils Stabilization: Temporary and permanent soil stabilization will be provided. Temporary stabilization will be provided through the application of straw and/or plastic sheeting to exposed, worked earth. From October 1 until April 30, no exposed soil may remain exposed and unworked for more than two days; after May 1, no exposed soil may remain exposed and unworked for more than seven days. BMP's: Plastic Sheeting, 6.Slope Protection: Slopes shall be protected from erosion through cover and prevention of concentrated surface runoff flows. BMP's: Plastic Sheeting, 7.Protection of Permanent Drain Inlets and Dust/Mud Control: Inlet protection will be provided for all catch basins. BMP’s: Inlet Protection BMP’s: Street Sweeping and watering of dust areas 8.Stabilization of Channels and Outlets: All channel slopes shall be constructed and protected against erosion in accordance with City of Renton BMP's: None required 9.Pollutant Control: Pollutants shall be controlled as described in the Potential Pollutants section of this SWPPP. 10.Dewatering Control: De-watering: Interception of the water table is not expected to occur, even if there is an increase in precipitation. However, should ground water flows be encountered, the flows can be directed to on site native vegetation for cleanup. BMP's: Native vegetation (As Required) 11.BMP Maintenance: All BMP's and SWPPP elements shall be inspected daily and maintained as required. 12.Project Management: The project shall be managed in a cooperative effort by the project manager, contractor, engineer, and the county inspector. During the construction process, if unforeseen issues arise that cannot be resolved on site, construction activity (other than SWPPP maintenance) shall be halted and the county inspector and the project engineer are to be contacted and informed of the situation. The Erosion Control Lead TBD Renton Highlands 6-Lot SP TIR October 20, 2023 31 | P a g e 13.Protect On-Site Stormwater Management BMPs For Runoff From Roofs And Other Hard Surface On-site stormwater management BMPs used for runoff from roofs and other hard surfaces include: full dispersion, roof downspout full infiltration or dispersion systems, perforated stubout connections, rain gardens, bioretention systems, permeable pavement, sheetflow dispersion, and concentrated flow dispersion. The areas on the site to be used for these BMPs shall be protected from siltation and compaction during construction by sequencing the construction in a fashion to install these BMPs at the latter part of the construction grading operations, by excluding equipment from the BMPS and the associated areas, and by using the erosion and sedimentation control BMPs. BMP C102: Buffer Zone Since the project is for residential apartments, under the City of Renton 30.63 A.530, (2) the project does not fall under the “High Use Sites” covering commercial or industrial sites. BMP C-151: Concrete Handling (Design and Installation Specifications) Concrete truck chutes, pumps, and internals shall be washed out only into formed areas awaiting installation of concrete or asphalt. Unused concrete remaining in the truck and pump shall be returned to the originating batch plant for recycling. Hand tools including, but not limited to, screeds, shovels, rakes, floats, and trowels shall be washed off only into formed areas awaiting installation of concrete or asphalt. Equipment that cannot be easily moved, such as concrete pavers, shall only be washed in areas that do not directly drain to natural or constructed stormwater conveyances. Washdown from areas such as concrete aggregate driveways shall not drain directly to natural or constructed stormwater conveyances. When no formed areas are available, washwater and leftover product shall be contained in a lined container. Contained concrete shall be disposed of in a manner that does not violate groundwater or surface water quality standards Maintenance Standards: Containers shall be checked for holes in the liner daily during concrete pours and repaired the same day Soil Management Plan for “Post Construction Soil Standard” The top soils will be stockpile on-site and reused per “Implementation Options #4b “Amend existing soil in place per the Post Construction Soil Standard” which requires “Stockpile existing top soils during grading and replace it prior to planting…” In addition, the soils will be required to be tested for organic compliance. See the following requirements. Amend Existing Soils, Purpose and Definition Naturally occurring (undisturbed) soil and vegetation provide important stormwater functions including: water infiltration; nutrient, sediment, and pollutant adsorption; sediment and pollutant biofiltration; water interflow storage and transmission; and pollutant decomposition. These functions are largely lost when development strips away native soil and vegetation and replaces it with minimal topsoil and sod. Not only are these important stormwater functions lost, but such landscapes themselves become pollution- generating pervious surfaces due to increased use of pesticides, fertilizers and other landscaping and household/industrial chemicals, the Renton Highlands 6-Lot SP TIR October 20, 2023 32 | P a g e concentration of pet wastes, and pollutants that accompany roadside litter. Establishing soil quality and depth regains greater stormwater functions in the post development landscape, provides increased treatment of pollutants and sediments that result from development and habitation, and minimizes the need for some landscaping chemicals, thus reducing pollution through prevention. Applications and Limitations Establishing a minimum soil quality and depth is not the same as preservation of naturally occurring soil and vegetation. However, establishing a minimum soil quality and depth will provide improved on-site management of stormwater flow and water quality. Soil organic matter can be attained through numerous materials such as compost, composted woody material, biosolids, and forest product residuals. It is important that the materials used to meet the soil quality and depth BMP be appropriate and beneficial to the plant cover to be established. Likewise, it is important that imported topsoils improve soil conditions and do not have an excessive percent of clay fines. Design Guidelines Soil retention. The duff layer and native topsoil should be retained in an undisturbed state to the maximum extent practicable. In any areas requiring grading remove and stockpile the duff layer and topsoil on site in a designated, controlled area, not adjacent to public resources and critical areas, to be reapplied to other portions of the site where feasible. Soil quality. All areas subject to clearing and grading that have not been covered by impervious surface, incorporated into a drainage facility or engineered as structural fill or slope shall, at project completion, demonstrate the following: I.A topsoil layer with a minimum organic matter content of ten percent dry weight in planting beds, and 5% organic matter content (based on a loss-on-ignition test) in turf areas, and a pH from 6.0 to 8.0 or matching the pH of the original undisturbed soil. The topsoil layer shall have a minimum depth of eight inches except where tree roots limit the depth of incorporation of amendments needed to meet the criteria. Subsoils below the topsoil layer should be scarified at least 4 inches with some incorporation of the upper material to avoid stratified layers, where feasible. 2.Planting beds must be mulched with 2 inches of organic material 3.Quality of compost and other materials used to meet the organic content requirements: a.The organic content for -pre-approved” amendment rates can be met only using compost that meets the definition of -composted materials” in WAC I73-350-220. This code is available online at: http://www.ecy.wa.gov/programs/swfa/facilities/350.html. Compost used in bioretention areas should be stable, mature and derived from yard debris, wood waste, or other organic materials that meet the intent of the organic soil amendment specification. Biosolids and manure composts can be higher in bio-available phosphorus than compost derived from yard or plant waste and therefore are not allowed in bioretention areas due to the possibility of exporting bio-available phosphorus in effluent. The compost must also have an organic matter content of 35% to 65%, and a carbon to nitrogen ratio below 25:I. The carbon to nitrogen ratio may be as high as 35:I for plantings composed entirely of plants native to the Puget Sound Lowlands region. b.Calculated amendment rates may be met through use of composted materials as defined above; or other organic materials amended to meet the carbon to nitrogen ratio requirements, and meeting the contaminant standards of Grade A Compost. The resulting soil should be conducive to the type of vegetation to be established. Renton Highlands 6-Lot SP TIR October 20, 2023 33 | P a g e Implementation Options: The soil quality design guidelines listed above can be met by using one of the methods listed below. I.Leave undisturbed native vegetation and soil, and protect from compaction during construction. 2. Amend disturbed soil according to the following procedures: b.Scarify subsoil to a depth of one foot c.In planting beds, place three inches of compost and till in to an eight-inch depth. d.In turf areas, place two inches of compost and till in to an eight-inch depth. e.Apply two to four inches of arborist wood chip, coarse bark mulch, or compost mulch to planting beds after final planting. Alternatively, disturbed soil can be amended on a site-customized manner so that it meets the soil quality criteria set forth above, as determined by a licensed engineer, geologist, landscape architect, or other person as approved by City of Renton. 3.Stockpile existing topsoil during grading, and replace it prior to planting. Stockpiled topsoil must be amended if needed to meet the organic matter and depth requirements by following the procedures in method (2) above). 4.Import topsoil mix of sufficient organic content and depth to meet the organic matter and depth requirements. 5. More than one method may be used on different portions of the same site. Soil that already meets the depth and organic matter quality standards, and is not compacted, does not need to be amended. Maintenance Soil quality and depth should be established toward the end of construction and once established, should be protected from compaction, such as from large machinery use, and from erosion. Soil should be planted and mulched after installation. Plant debris or its equivalent should be left on the soil surface to replenish organic matter. TIR SECTION 9 BONDS, SUMMARIES AND COVENANTS All the necessary documents listed below will be included after first review comments are received. These will include: •Bond Quantities, •Flow Control and Water Quality Facility Summary Sheet and Sketch •Declaration of Covenant for Privately Maintained Flow Control and WQ Facilities •Declaration of Covenant for Privately Maintained Flow Control BMPs Renton Highlands 6-Lot SP TIR October 20, 2023 34 | P a g e TIR SECTION 10 OPERATIONS AND MAINTENANCE MANUAL Stormwater System Description The stormwater system for the site is fairly basic and contains the following elements: •12”-inch storm pipe •Catch basin •Detention Vault •Filterra •Pump System Renton Highlands 6-Lot SP TIR October 20, 2023 35 | P a g e Renton Highlands 6-Lot SP TIR October 20, 2023 36 | P a g e Renton Highlands 6-Lot SP TIR October 20, 2023 37 | P a g e Renton Highlands 6-Lot SP TIR October 20, 2023 38 | P a g e Renton Highlands 6-Lot SP TIR October 20, 2023 39 | P a g e Renton Highlands 6-Lot SP TIR October 20, 2023 40 | P a g e Renton Highlands 6-Lot SP TIR October 20, 2023 41 | P a g e Renton Highlands 6-Lot SP TIR October 20, 2023 42 | P a g e Renton Highlands 6-Lot SP TIR October 20, 2023 43 | P a g e Renton Highlands 6-Lot SP TIR October 20, 2023 44 | P a g e APPENDIX A PIPE CAPACITY PUMP CURVES WWHM12 RESULTS WWHM2012 PROJECT REPORT default[58]10/21/2023 12:41:02 PM Page 2 General Model Information Project Name:default[58] Site Name: Site Address: City: Report Date:10/21/2023 Gage:Seatac Data Start:1948/10/01 Data End:2009/09/30 Timestep:15 Minute Precip Scale:1.000 Version Date:2021/08/18 Version:4.2.18 POC Thresholds Low Flow Threshold for POC1:50 Percent of the 2 Year High Flow Threshold for POC1:50 Year default[58]10/21/2023 12:41:02 PM Page 3 Landuse Basin Data Predeveloped Land Use Basin 1 Bypass:No GroundWater:No Pervious Land Use acre C, Forest, Flat 2 Pervious Total 2 Impervious Land Use acre Impervious Total 0 Basin Total 2 Element Flows To: Surface Interflow Groundwater default[58]10/21/2023 12:41:02 PM Page 4 Mitigated Land Use Basin 1 Bypass:No GroundWater:No Pervious Land Use acre C, Lawn, Flat 0.81 Pervious Total 0.81 Impervious Land Use acre ROADS FLAT 0.61 ROOF TOPS FLAT 0.445 DRIVEWAYS FLAT 0.082 SIDEWALKS FLAT 0.053 Impervious Total 1.19 Basin Total 2 Element Flows To: Surface Interflow Groundwater Vault 1 Vault 1 default[58]10/21/2023 12:41:02 PM Page 5 Routing Elements Predeveloped Routing default[58]10/21/2023 12:41:02 PM Page 6 Mitigated Routing Vault 1 Width:67.6836796212544 ft. Length:67.6836796212544 ft. Depth:10 ft. Discharge Structure Riser Height: Riser Diameter: Orifice 1 Diameter: Orifice 2 Diameter: Orifice 3 Diameter: 9 ft. 18 in. 0.49 in. Elevation:0 ft. 1 in. Elevation:6.193 ft. 1.36 in. Elevation:7.16791666666669 ft. Element Flows To: Outlet 1 Outlet 2 Vault Hydraulic Table Stage(feet)Area(ac.)Volume(ac-ft.)Discharge(cfs)Infilt(cfs) 0.0000 0.105 0.000 0.000 0.000 0.1111 0.105 0.011 0.002 0.000 0.2222 0.105 0.023 0.002 0.000 0.3333 0.105 0.035 0.003 0.000 0.4444 0.105 0.046 0.004 0.000 0.5556 0.105 0.058 0.004 0.000 0.6667 0.105 0.070 0.005 0.000 0.7778 0.105 0.081 0.005 0.000 0.8889 0.105 0.093 0.005 0.000 1.0000 0.105 0.105 0.006 0.000 1.1111 0.105 0.116 0.006 0.000 1.2222 0.105 0.128 0.006 0.000 1.3333 0.105 0.140 0.007 0.000 1.4444 0.105 0.151 0.007 0.000 1.5556 0.105 0.163 0.007 0.000 1.6667 0.105 0.175 0.008 0.000 1.7778 0.105 0.187 0.008 0.000 1.8889 0.105 0.198 0.008 0.000 2.0000 0.105 0.210 0.008 0.000 2.1111 0.105 0.222 0.009 0.000 2.2222 0.105 0.233 0.009 0.000 2.3333 0.105 0.245 0.009 0.000 2.4444 0.105 0.257 0.009 0.000 2.5556 0.105 0.268 0.010 0.000 2.6667 0.105 0.280 0.010 0.000 2.7778 0.105 0.292 0.010 0.000 2.8889 0.105 0.303 0.010 0.000 3.0000 0.105 0.315 0.010 0.000 3.1111 0.105 0.327 0.011 0.000 3.2222 0.105 0.338 0.011 0.000 3.3333 0.105 0.350 0.011 0.000 3.4444 0.105 0.362 0.011 0.000 3.5556 0.105 0.373 0.011 0.000 3.6667 0.105 0.385 0.012 0.000 3.7778 0.105 0.397 0.012 0.000 3.8889 0.105 0.409 0.012 0.000 4.0000 0.105 0.420 0.012 0.000 4.1111 0.105 0.432 0.012 0.000 default[58]10/21/2023 12:41:02 PM Page 7 4.2222 0.105 0.444 0.012 0.000 4.3333 0.105 0.455 0.013 0.000 4.4444 0.105 0.467 0.013 0.000 4.5556 0.105 0.479 0.013 0.000 4.6667 0.105 0.490 0.013 0.000 4.7778 0.105 0.502 0.013 0.000 4.8889 0.105 0.514 0.013 0.000 5.0000 0.105 0.525 0.014 0.000 5.1111 0.105 0.537 0.014 0.000 5.2222 0.105 0.549 0.014 0.000 5.3333 0.105 0.560 0.014 0.000 5.4444 0.105 0.572 0.014 0.000 5.5556 0.105 0.584 0.014 0.000 5.6667 0.105 0.595 0.014 0.000 5.7778 0.105 0.607 0.015 0.000 5.8889 0.105 0.619 0.015 0.000 6.0000 0.105 0.631 0.015 0.000 6.1111 0.105 0.642 0.015 0.000 6.2222 0.105 0.654 0.020 0.000 6.3333 0.105 0.666 0.025 0.000 6.4444 0.105 0.677 0.029 0.000 6.5556 0.105 0.689 0.032 0.000 6.6667 0.105 0.701 0.034 0.000 6.7778 0.105 0.712 0.037 0.000 6.8889 0.105 0.724 0.039 0.000 7.0000 0.105 0.736 0.040 0.000 7.1111 0.105 0.747 0.042 0.000 7.2222 0.105 0.759 0.056 0.000 7.3333 0.105 0.771 0.066 0.000 7.4444 0.105 0.782 0.073 0.000 7.5556 0.105 0.794 0.080 0.000 7.6667 0.105 0.806 0.085 0.000 7.7778 0.105 0.818 0.090 0.000 7.8889 0.105 0.829 0.095 0.000 8.0000 0.105 0.841 0.099 0.000 8.1111 0.105 0.853 0.104 0.000 8.2222 0.105 0.864 0.108 0.000 8.3333 0.105 0.876 0.111 0.000 8.4444 0.105 0.888 0.115 0.000 8.5556 0.105 0.899 0.119 0.000 8.6667 0.105 0.911 0.122 0.000 8.7778 0.105 0.923 0.125 0.000 8.8889 0.105 0.934 0.129 0.000 9.0000 0.105 0.946 0.132 0.000 9.1111 0.105 0.958 0.723 0.000 9.2222 0.105 0.969 1.775 0.000 9.3333 0.105 0.981 3.023 0.000 9.4444 0.105 0.993 4.247 0.000 9.5556 0.105 1.004 5.244 0.000 9.6667 0.105 1.016 5.903 0.000 9.7778 0.105 1.028 6.401 0.000 9.8889 0.105 1.040 6.836 0.000 10.000 0.105 1.051 7.243 0.000 10.111 0.105 1.063 7.629 0.000 10.222 0.000 0.000 7.996 0.000 default[58]10/21/2023 12:41:02 PM Page 8 Analysis Results POC 1 + Predeveloped x Mitigated Predeveloped Landuse Totals for POC #1 Total Pervious Area:2 Total Impervious Area:0 Mitigated Landuse Totals for POC #1 Total Pervious Area:0.81 Total Impervious Area:1.19 Flow Frequency Method:Log Pearson Type III 17B Flow Frequency Return Periods for Predeveloped. POC #1 Return Period Flow(cfs) 2 year 0.058802 5 year 0.09235 10 year 0.111363 25 year 0.131505 50 year 0.143969 100 year 0.15457 Flow Frequency Return Periods for Mitigated. POC #1 Return Period Flow(cfs) 2 year 0.028924 5 year 0.055678 10 year 0.079554 25 year 0.117695 50 year 0.152516 100 year 0.193357 Annual Peaks Annual Peaks for Predeveloped and Mitigated. POC #1 Year Predeveloped Mitigated 1949 0.058 0.014 1950 0.072 0.066 1951 0.129 0.148 1952 0.041 0.012 1953 0.033 0.038 1954 0.051 0.037 1955 0.081 0.014 1956 0.064 0.083 1957 0.052 0.015 1958 0.058 0.032 default[58]10/21/2023 12:41:31 PM Page 9 1959 0.050 0.037 1960 0.088 0.057 1961 0.049 0.051 1962 0.031 0.013 1963 0.042 0.028 1964 0.056 0.043 1965 0.040 0.036 1966 0.038 0.028 1967 0.080 0.045 1968 0.050 0.015 1969 0.049 0.030 1970 0.040 0.035 1971 0.043 0.015 1972 0.096 0.102 1973 0.044 0.038 1974 0.048 0.037 1975 0.064 0.015 1976 0.047 0.018 1977 0.006 0.010 1978 0.041 0.031 1979 0.025 0.010 1980 0.091 0.089 1981 0.037 0.018 1982 0.070 0.036 1983 0.063 0.033 1984 0.039 0.014 1985 0.023 0.012 1986 0.102 0.015 1987 0.090 0.038 1988 0.036 0.013 1989 0.023 0.014 1990 0.188 0.048 1991 0.113 0.110 1992 0.044 0.015 1993 0.046 0.011 1994 0.015 0.011 1995 0.065 0.056 1996 0.138 0.123 1997 0.115 0.102 1998 0.026 0.015 1999 0.108 0.079 2000 0.045 0.030 2001 0.008 0.008 2002 0.050 0.051 2003 0.064 0.014 2004 0.082 0.039 2005 0.059 0.012 2006 0.070 0.073 2007 0.140 0.097 2008 0.180 0.050 2009 0.089 0.027 Ranked Annual Peaks Ranked Annual Peaks for Predeveloped and Mitigated. POC #1 Rank Predeveloped Mitigated 1 0.1885 0.1485 2 0.1805 0.1229 3 0.1399 0.1103 default[58]10/21/2023 12:41:31 PM Page 10 4 0.1378 0.1018 5 0.1295 0.1017 6 0.1152 0.0969 7 0.1135 0.0888 8 0.1080 0.0833 9 0.1019 0.0785 10 0.0964 0.0733 11 0.0914 0.0660 12 0.0902 0.0568 13 0.0886 0.0556 14 0.0876 0.0514 15 0.0823 0.0513 16 0.0808 0.0504 17 0.0800 0.0479 18 0.0720 0.0451 19 0.0702 0.0425 20 0.0696 0.0387 21 0.0654 0.0385 22 0.0644 0.0380 23 0.0643 0.0378 24 0.0636 0.0374 25 0.0630 0.0370 26 0.0590 0.0366 27 0.0585 0.0360 28 0.0578 0.0358 29 0.0555 0.0351 30 0.0519 0.0335 31 0.0507 0.0317 32 0.0501 0.0313 33 0.0499 0.0305 34 0.0498 0.0297 35 0.0494 0.0284 36 0.0488 0.0280 37 0.0475 0.0269 38 0.0466 0.0179 39 0.0456 0.0179 40 0.0455 0.0153 41 0.0438 0.0153 42 0.0438 0.0151 43 0.0430 0.0151 44 0.0422 0.0149 45 0.0409 0.0149 46 0.0408 0.0146 47 0.0402 0.0144 48 0.0398 0.0143 49 0.0389 0.0140 50 0.0382 0.0138 51 0.0365 0.0135 52 0.0356 0.0133 53 0.0330 0.0126 54 0.0307 0.0124 55 0.0261 0.0123 56 0.0247 0.0120 57 0.0232 0.0111 58 0.0231 0.0110 59 0.0153 0.0104 60 0.0082 0.0098 61 0.0055 0.0080 default[58]10/21/2023 12:41:31 PM Page 11 default[58]10/21/2023 12:41:31 PM Page 12 Duration Flows The Facility PASSED Flow(cfs)Predev Mit Percentage Pass/Fail 0.0294 17547 17267 98 Pass 0.0306 16168 15391 95 Pass 0.0317 14968 13573 90 Pass 0.0329 13851 12074 87 Pass 0.0340 12810 10735 83 Pass 0.0352 11813 9625 81 Pass 0.0363 10900 8504 78 Pass 0.0375 10119 7349 72 Pass 0.0387 9385 6246 66 Pass 0.0398 8733 5394 61 Pass 0.0410 8145 4492 55 Pass 0.0421 7593 3709 48 Pass 0.0433 7060 3189 45 Pass 0.0444 6590 3056 46 Pass 0.0456 6145 2926 47 Pass 0.0468 5781 2815 48 Pass 0.0479 5431 2697 49 Pass 0.0491 5097 2586 50 Pass 0.0502 4808 2464 51 Pass 0.0514 4526 2363 52 Pass 0.0525 4252 2284 53 Pass 0.0537 4017 2199 54 Pass 0.0549 3782 2130 56 Pass 0.0560 3548 2064 58 Pass 0.0572 3337 1989 59 Pass 0.0583 3138 1911 60 Pass 0.0595 2952 1834 62 Pass 0.0606 2785 1771 63 Pass 0.0618 2599 1719 66 Pass 0.0630 2447 1667 68 Pass 0.0641 2304 1604 69 Pass 0.0653 2160 1564 72 Pass 0.0664 2025 1515 74 Pass 0.0676 1898 1463 77 Pass 0.0687 1790 1417 79 Pass 0.0699 1687 1353 80 Pass 0.0711 1584 1298 81 Pass 0.0722 1483 1244 83 Pass 0.0734 1380 1188 86 Pass 0.0745 1292 1145 88 Pass 0.0757 1217 1092 89 Pass 0.0768 1155 1003 86 Pass 0.0780 1098 945 86 Pass 0.0792 1048 887 84 Pass 0.0803 997 837 83 Pass 0.0815 930 800 86 Pass 0.0826 883 759 85 Pass 0.0838 837 713 85 Pass 0.0849 789 690 87 Pass 0.0861 743 662 89 Pass 0.0873 713 619 86 Pass 0.0884 668 566 84 Pass 0.0896 630 534 84 Pass default[58]10/21/2023 12:41:31 PM Page 13 0.0907 595 516 86 Pass 0.0919 565 496 87 Pass 0.0930 539 478 88 Pass 0.0942 496 458 92 Pass 0.0954 473 435 91 Pass 0.0965 434 403 92 Pass 0.0977 399 369 92 Pass 0.0988 366 343 93 Pass 0.1000 348 325 93 Pass 0.1012 323 302 93 Pass 0.1023 296 276 93 Pass 0.1035 274 264 96 Pass 0.1046 256 247 96 Pass 0.1058 235 231 98 Pass 0.1069 217 210 96 Pass 0.1081 200 193 96 Pass 0.1093 180 171 95 Pass 0.1104 158 155 98 Pass 0.1116 145 148 102 Pass 0.1127 129 131 101 Pass 0.1139 119 122 102 Pass 0.1150 109 114 104 Pass 0.1162 97 105 108 Pass 0.1174 91 97 106 Pass 0.1185 82 85 103 Pass 0.1197 76 78 102 Pass 0.1208 69 70 101 Pass 0.1220 61 61 100 Pass 0.1231 54 46 85 Pass 0.1243 48 42 87 Pass 0.1255 41 38 92 Pass 0.1266 38 32 84 Pass 0.1278 33 27 81 Pass 0.1289 27 21 77 Pass 0.1301 22 16 72 Pass 0.1312 21 10 47 Pass 0.1324 20 4 20 Pass 0.1336 19 3 15 Pass 0.1347 17 3 17 Pass 0.1359 14 3 21 Pass 0.1370 12 3 25 Pass 0.1382 9 3 33 Pass 0.1393 4 3 75 Pass 0.1405 3 2 66 Pass 0.1417 3 1 33 Pass 0.1428 3 1 33 Pass 0.1440 3 1 33 Pass default[58]10/21/2023 12:41:31 PM Page 14 Water Quality Water Quality BMP Flow and Volume for POC #1 On-line facility volume:0.0384 acre-feet On-line facility target flow:0.0189 cfs. Adjusted for 15 min:0.0189 cfs. Off-line facility target flow:0.0121 cfs. Adjusted for 15 min:0.0121 cfs. default[58]10/21/2023 12:41:31 PM Page 15 LID Report default[58]10/21/2023 12:41:40 PM Page 16 Model Default Modifications Total of 0 changes have been made. PERLND Changes No PERLND changes have been made. IMPLND Changes No IMPLND changes have been made. default[58]10/21/2023 12:41:40 PM Page 17 Appendix Predeveloped Schematic default[58]10/21/2023 12:41:40 PM Page 18 Mitigated Schematic default[58]10/21/2023 12:41:41 PM Page 19 Predeveloped UCI File RUN GLOBAL WWHM4 model simulation START 1948 10 01 END 2009 09 30 RUN INTERP OUTPUT LEVEL 3 0 RESUME 0 RUN 1 UNIT SYSTEM 1 END GLOBAL FILES <File> <Un#> <-----------File Name------------------------------>*** <-ID->*** WDM 26 default[58].wdm MESSU 25 Predefault[58].MES 27 Predefault[58].L61 28 Predefault[58].L62 30 POCdefault[58]1.dat END FILES OPN SEQUENCE INGRP INDELT 00:15 PERLND 10 COPY 501 DISPLY 1 END INGRP END OPN SEQUENCE DISPLY DISPLY-INFO1 # - #<----------Title----------->***TRAN PIVL DIG1 FIL1 PYR DIG2 FIL2 YRND 1 Basin 1 MAX 1 2 30 9 END DISPLY-INFO1 END DISPLY COPY TIMESERIES # - # NPT NMN *** 1 1 1 501 1 1 END TIMESERIES END COPY GENER OPCODE # # OPCD *** END OPCODE PARM # # K *** END PARM END GENER PERLND GEN-INFO <PLS ><-------Name------->NBLKS Unit-systems Printer *** # - #User t-series Engl Metr *** in out *** 10 C, Forest, Flat 1 1 1 1 27 0 END GEN-INFO *** Section PWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC *** 10 0 0 1 0 0 0 0 0 0 0 0 0 END ACTIVITY PRINT-INFO <PLS > ***************** Print-flags ***************************** PIVL PYR # - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC ********* 10 0 0 4 0 0 0 0 0 0 0 0 0 1 9 END PRINT-INFO default[58]10/21/2023 12:41:41 PM Page 20 PWAT-PARM1 <PLS > PWATER variable monthly parameter value flags *** # - # CSNO RTOP UZFG VCS VUZ VNN VIFW VIRC VLE INFC HWT *** 10 0 0 0 0 0 0 0 0 0 0 0 END PWAT-PARM1 PWAT-PARM2 <PLS > PWATER input info: Part 2 *** # - # ***FOREST LZSN INFILT LSUR SLSUR KVARY AGWRC 10 0 4.5 0.08 400 0.05 0.5 0.996 END PWAT-PARM2 PWAT-PARM3 <PLS > PWATER input info: Part 3 *** # - # ***PETMAX PETMIN INFEXP INFILD DEEPFR BASETP AGWETP 10 0 0 2 2 0 0 0 END PWAT-PARM3 PWAT-PARM4 <PLS > PWATER input info: Part 4 *** # - # CEPSC UZSN NSUR INTFW IRC LZETP *** 10 0.2 0.5 0.35 6 0.5 0.7 END PWAT-PARM4 PWAT-STATE1 <PLS > *** Initial conditions at start of simulation ran from 1990 to end of 1992 (pat 1-11-95) RUN 21 *** # - # *** CEPS SURS UZS IFWS LZS AGWS GWVS 10 0 0 0 0 2.5 1 0 END PWAT-STATE1 END PERLND IMPLND GEN-INFO <PLS ><-------Name-------> Unit-systems Printer *** # - #User t-series Engl Metr *** in out *** END GEN-INFO *** Section IWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW IWAT SLD IWG IQAL *** END ACTIVITY PRINT-INFO <ILS > ******** Print-flags ******** PIVL PYR # - # ATMP SNOW IWAT SLD IWG IQAL ********* END PRINT-INFO IWAT-PARM1 <PLS > IWATER variable monthly parameter value flags *** # - # CSNO RTOP VRS VNN RTLI *** END IWAT-PARM1 IWAT-PARM2 <PLS > IWATER input info: Part 2 *** # - # *** LSUR SLSUR NSUR RETSC END IWAT-PARM2 IWAT-PARM3 <PLS > IWATER input info: Part 3 *** # - # ***PETMAX PETMIN END IWAT-PARM3 IWAT-STATE1 <PLS > *** Initial conditions at start of simulation # - # *** RETS SURS END IWAT-STATE1 default[58]10/21/2023 12:41:41 PM Page 21 END IMPLND SCHEMATIC <-Source-><--Area--> <-Target-> MBLK *** <Name> #<-factor-> <Name> # Tbl# *** Basin 1*** PERLND 10 2 COPY 501 12 PERLND 10 2 COPY 501 13 ******Routing****** END SCHEMATIC NETWORK <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # #<-factor->strg <Name> # # <Name> # # *** COPY 501 OUTPUT MEAN 1 1 48.4 DISPLY 1 INPUT TIMSER 1 <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # #<-factor->strg <Name> # # <Name> # # *** END NETWORK RCHRES GEN-INFO RCHRES Name Nexits Unit Systems Printer *** # - #<------------------><---> User T-series Engl Metr LKFG *** in out *** END GEN-INFO *** Section RCHRES*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # HYFG ADFG CNFG HTFG SDFG GQFG OXFG NUFG PKFG PHFG *** END ACTIVITY PRINT-INFO <PLS > ***************** Print-flags ******************* PIVL PYR # - # HYDR ADCA CONS HEAT SED GQL OXRX NUTR PLNK PHCB PIVL PYR ********* END PRINT-INFO HYDR-PARM1 RCHRES Flags for each HYDR Section *** # - # VC A1 A2 A3 ODFVFG for each *** ODGTFG for each FUNCT for each FG FG FG FG possible exit *** possible exit possible exit * * * * * * * * * * * * * * *** END HYDR-PARM1 HYDR-PARM2 # - # FTABNO LEN DELTH STCOR KS DB50 *** <------><--------><--------><--------><--------><--------><--------> *** END HYDR-PARM2 HYDR-INIT RCHRES Initial conditions for each HYDR section *** # - # *** VOL Initial value of COLIND Initial value of OUTDGT *** ac-ft for each possible exit for each possible exit <------><--------> <---><---><---><---><---> *** <---><---><---><---><---> END HYDR-INIT END RCHRES SPEC-ACTIONS END SPEC-ACTIONS FTABLES END FTABLES EXT SOURCES <-Volume-> <Member> SsysSgap<--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # tem strg<-factor->strg <Name> # # <Name> # # *** WDM 2 PREC ENGL 1 PERLND 1 999 EXTNL PREC WDM 2 PREC ENGL 1 IMPLND 1 999 EXTNL PREC default[58]10/21/2023 12:41:41 PM Page 22 WDM 1 EVAP ENGL 0.76 PERLND 1 999 EXTNL PETINP WDM 1 EVAP ENGL 0.76 IMPLND 1 999 EXTNL PETINP END EXT SOURCES EXT TARGETS <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Volume-> <Member> Tsys Tgap Amd *** <Name> # <Name> # #<-factor->strg <Name> # <Name> tem strg strg*** COPY 501 OUTPUT MEAN 1 1 48.4 WDM 501 FLOW ENGL REPL END EXT TARGETS MASS-LINK <Volume> <-Grp> <-Member-><--Mult--> <Target> <-Grp> <-Member->*** <Name><Name> # #<-factor-> <Name><Name> # #*** MASS-LINK 12 PERLND PWATER SURO 0.083333 COPY INPUT MEAN END MASS-LINK 12 MASS-LINK 13 PERLND PWATER IFWO 0.083333 COPY INPUT MEAN END MASS-LINK 13 END MASS-LINK END RUN default[58]10/21/2023 12:41:41 PM Page 23 Mitigated UCI File RUN GLOBAL WWHM4 model simulation START 1948 10 01 END 2009 09 30 RUN INTERP OUTPUT LEVEL 3 0 RESUME 0 RUN 1 UNIT SYSTEM 1 END GLOBAL FILES <File> <Un#> <-----------File Name------------------------------>*** <-ID->*** WDM 26 default[58].wdm MESSU 25 Mitdefault[58].MES 27 Mitdefault[58].L61 28 Mitdefault[58].L62 30 POCdefault[58]1.dat END FILES OPN SEQUENCE INGRP INDELT 00:15 PERLND 16 IMPLND 1 IMPLND 4 IMPLND 5 IMPLND 8 RCHRES 1 COPY 1 COPY 501 DISPLY 1 END INGRP END OPN SEQUENCE DISPLY DISPLY-INFO1 # - #<----------Title----------->***TRAN PIVL DIG1 FIL1 PYR DIG2 FIL2 YRND 1 Vault 1 MAX 1 2 30 9 END DISPLY-INFO1 END DISPLY COPY TIMESERIES # - # NPT NMN *** 1 1 1 501 1 1 END TIMESERIES END COPY GENER OPCODE # # OPCD *** END OPCODE PARM # # K *** END PARM END GENER PERLND GEN-INFO <PLS ><-------Name------->NBLKS Unit-systems Printer *** # - #User t-series Engl Metr *** in out *** 16 C, Lawn, Flat 1 1 1 1 27 0 END GEN-INFO *** Section PWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC *** 16 0 0 1 0 0 0 0 0 0 0 0 0 END ACTIVITY default[58]10/21/2023 12:41:41 PM Page 24 PRINT-INFO <PLS > ***************** Print-flags ***************************** PIVL PYR # - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC ********* 16 0 0 4 0 0 0 0 0 0 0 0 0 1 9 END PRINT-INFO PWAT-PARM1 <PLS > PWATER variable monthly parameter value flags *** # - # CSNO RTOP UZFG VCS VUZ VNN VIFW VIRC VLE INFC HWT *** 16 0 0 0 0 0 0 0 0 0 0 0 END PWAT-PARM1 PWAT-PARM2 <PLS > PWATER input info: Part 2 *** # - # ***FOREST LZSN INFILT LSUR SLSUR KVARY AGWRC 16 0 4.5 0.03 400 0.05 0.5 0.996 END PWAT-PARM2 PWAT-PARM3 <PLS > PWATER input info: Part 3 *** # - # ***PETMAX PETMIN INFEXP INFILD DEEPFR BASETP AGWETP 16 0 0 2 2 0 0 0 END PWAT-PARM3 PWAT-PARM4 <PLS > PWATER input info: Part 4 *** # - # CEPSC UZSN NSUR INTFW IRC LZETP *** 16 0.1 0.25 0.25 6 0.5 0.25 END PWAT-PARM4 PWAT-STATE1 <PLS > *** Initial conditions at start of simulation ran from 1990 to end of 1992 (pat 1-11-95) RUN 21 *** # - # *** CEPS SURS UZS IFWS LZS AGWS GWVS 16 0 0 0 0 2.5 1 0 END PWAT-STATE1 END PERLND IMPLND GEN-INFO <PLS ><-------Name-------> Unit-systems Printer *** # - #User t-series Engl Metr *** in out *** 1 ROADS/FLAT 1 1 1 27 0 4 ROOF TOPS/FLAT 1 1 1 27 0 5 DRIVEWAYS/FLAT 1 1 1 27 0 8 SIDEWALKS/FLAT 1 1 1 27 0 END GEN-INFO *** Section IWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW IWAT SLD IWG IQAL *** 1 0 0 1 0 0 0 4 0 0 1 0 0 0 5 0 0 1 0 0 0 8 0 0 1 0 0 0 END ACTIVITY PRINT-INFO <ILS > ******** Print-flags ******** PIVL PYR # - # ATMP SNOW IWAT SLD IWG IQAL ********* 1 0 0 4 0 0 0 1 9 4 0 0 4 0 0 0 1 9 5 0 0 4 0 0 0 1 9 8 0 0 4 0 0 0 1 9 END PRINT-INFO IWAT-PARM1 <PLS > IWATER variable monthly parameter value flags *** default[58]10/21/2023 12:41:41 PM Page 25 # - # CSNO RTOP VRS VNN RTLI *** 1 0 0 0 0 0 4 0 0 0 0 0 5 0 0 0 0 0 8 0 0 0 0 0 END IWAT-PARM1 IWAT-PARM2 <PLS > IWATER input info: Part 2 *** # - # *** LSUR SLSUR NSUR RETSC 1 400 0.01 0.1 0.1 4 400 0.01 0.1 0.1 5 400 0.01 0.1 0.1 8 400 0.01 0.1 0.1 END IWAT-PARM2 IWAT-PARM3 <PLS > IWATER input info: Part 3 *** # - # ***PETMAX PETMIN 1 0 0 4 0 0 5 0 0 8 0 0 END IWAT-PARM3 IWAT-STATE1 <PLS > *** Initial conditions at start of simulation # - # *** RETS SURS 1 0 0 4 0 0 5 0 0 8 0 0 END IWAT-STATE1 END IMPLND SCHEMATIC <-Source-><--Area--> <-Target-> MBLK *** <Name> #<-factor-> <Name> # Tbl# *** Basin 1*** PERLND 16 0.81 RCHRES 1 2 PERLND 16 0.81 RCHRES 1 3 IMPLND 1 0.61 RCHRES 1 5 IMPLND 4 0.445 RCHRES 1 5 IMPLND 5 0.082 RCHRES 1 5 IMPLND 8 0.053 RCHRES 1 5 ******Routing****** PERLND 16 0.81 COPY 1 12 IMPLND 1 0.61 COPY 1 15 IMPLND 4 0.445 COPY 1 15 IMPLND 5 0.082 COPY 1 15 IMPLND 8 0.053 COPY 1 15 PERLND 16 0.81 COPY 1 13 RCHRES 1 1 COPY 501 16 END SCHEMATIC NETWORK <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # #<-factor->strg <Name> # # <Name> # # *** COPY 501 OUTPUT MEAN 1 1 48.4 DISPLY 1 INPUT TIMSER 1 <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # #<-factor->strg <Name> # # <Name> # # *** END NETWORK RCHRES GEN-INFO default[58]10/21/2023 12:41:41 PM Page 26 RCHRES Name Nexits Unit Systems Printer *** # - #<------------------><---> User T-series Engl Metr LKFG *** in out *** 1 Vault 1 1 1 1 1 28 0 1 END GEN-INFO *** Section RCHRES*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # HYFG ADFG CNFG HTFG SDFG GQFG OXFG NUFG PKFG PHFG *** 1 1 0 0 0 0 0 0 0 0 0 END ACTIVITY PRINT-INFO <PLS > ***************** Print-flags ******************* PIVL PYR # - # HYDR ADCA CONS HEAT SED GQL OXRX NUTR PLNK PHCB PIVL PYR ********* 1 4 0 0 0 0 0 0 0 0 0 1 9 END PRINT-INFO HYDR-PARM1 RCHRES Flags for each HYDR Section *** # - # VC A1 A2 A3 ODFVFG for each *** ODGTFG for each FUNCT for each FG FG FG FG possible exit *** possible exit possible exit * * * * * * * * * * * * * * *** 1 0 1 0 0 4 0 0 0 0 0 0 0 0 0 2 2 2 2 2 END HYDR-PARM1 HYDR-PARM2 # - # FTABNO LEN DELTH STCOR KS DB50 *** <------><--------><--------><--------><--------><--------><--------> *** 1 1 0.01 0.0 0.0 0.5 0.0 END HYDR-PARM2 HYDR-INIT RCHRES Initial conditions for each HYDR section *** # - # *** VOL Initial value of COLIND Initial value of OUTDGT *** ac-ft for each possible exit for each possible exit <------><--------> <---><---><---><---><---> *** <---><---><---><---><---> 1 0 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 END HYDR-INIT END RCHRES SPEC-ACTIONS END SPEC-ACTIONS FTABLES FTABLE 1 92 4 Depth Area Volume Outflow1 Velocity Travel Time*** (ft) (acres) (acre-ft) (cfs) (ft/sec) (Minutes)*** 0.000000 0.105167 0.000000 0.000000 0.111111 0.105167 0.011685 0.002084 0.222222 0.105167 0.023370 0.002947 0.333333 0.105167 0.035056 0.003610 0.444444 0.105167 0.046741 0.004168 0.555556 0.105167 0.058426 0.004660 0.666667 0.105167 0.070111 0.005105 0.777778 0.105167 0.081797 0.005514 0.888889 0.105167 0.093482 0.005895 1.000000 0.105167 0.105167 0.006252 1.111111 0.105167 0.116852 0.006591 1.222222 0.105167 0.128538 0.006912 1.333333 0.105167 0.140223 0.007220 1.444444 0.105167 0.151908 0.007514 1.555556 0.105167 0.163593 0.007798 1.666667 0.105167 0.175279 0.008072 1.777778 0.105167 0.186964 0.008336 1.888889 0.105167 0.198649 0.008593 2.000000 0.105167 0.210334 0.008842 2.111111 0.105167 0.222020 0.009084 2.222222 0.105167 0.233705 0.009320 2.333333 0.105167 0.245390 0.009551 default[58]10/21/2023 12:41:41 PM Page 27 2.444444 0.105167 0.257075 0.009775 2.555556 0.105167 0.268760 0.009995 2.666667 0.105167 0.280446 0.010210 2.777778 0.105167 0.292131 0.010421 2.888889 0.105167 0.303816 0.010627 3.000000 0.105167 0.315501 0.010829 3.111111 0.105167 0.327187 0.011028 3.222222 0.105167 0.338872 0.011223 3.333333 0.105167 0.350557 0.011415 3.444444 0.105167 0.362242 0.011604 3.555556 0.105167 0.373928 0.011789 3.666667 0.105167 0.385613 0.011972 3.777778 0.105167 0.397298 0.012152 3.888889 0.105167 0.408983 0.012330 4.000000 0.105167 0.420669 0.012505 4.111111 0.105167 0.432354 0.012677 4.222222 0.105167 0.444039 0.012847 4.333333 0.105167 0.455724 0.013015 4.444444 0.105167 0.467409 0.013181 4.555556 0.105167 0.479095 0.013345 4.666667 0.105167 0.490780 0.013507 4.777778 0.105167 0.502465 0.013666 4.888889 0.105167 0.514150 0.013824 5.000000 0.105167 0.525836 0.013981 5.111111 0.105167 0.537521 0.014135 5.222222 0.105167 0.549206 0.014288 5.333333 0.105167 0.560891 0.014439 5.444444 0.105167 0.572577 0.014589 5.555556 0.105167 0.584262 0.014737 5.666667 0.105167 0.595947 0.014883 5.777778 0.105167 0.607632 0.015029 5.888889 0.105167 0.619318 0.015173 6.000000 0.105167 0.631003 0.015315 6.111111 0.105167 0.642688 0.015456 6.222222 0.105167 0.654373 0.020235 6.333333 0.105167 0.666059 0.025900 6.444444 0.105167 0.677744 0.029480 6.555556 0.105167 0.689429 0.032348 6.666667 0.105167 0.701114 0.034820 6.777778 0.105167 0.712799 0.037029 6.888889 0.105167 0.724485 0.039048 7.000000 0.105167 0.736170 0.040920 7.111111 0.105167 0.747855 0.042675 7.222222 0.105167 0.759540 0.056030 7.333333 0.105167 0.771226 0.066324 7.444444 0.105167 0.782911 0.073811 7.555556 0.105167 0.794596 0.080112 7.666667 0.105167 0.806281 0.085701 7.777778 0.105167 0.817967 0.090796 7.888889 0.105167 0.829652 0.095519 8.000000 0.105167 0.841337 0.099947 8.111111 0.105167 0.853022 0.104136 8.222222 0.105167 0.864708 0.108122 8.333333 0.105167 0.876393 0.111934 8.444444 0.105167 0.888078 0.115596 8.555556 0.105167 0.899763 0.119124 8.666667 0.105167 0.911449 0.122534 8.777778 0.105167 0.923134 0.125837 8.888889 0.105167 0.934819 0.129042 9.000000 0.105167 0.946504 0.132160 9.111111 0.105167 0.958189 0.723001 9.222222 0.105167 0.969875 1.775103 9.333333 0.105167 0.981560 3.023569 9.444444 0.105167 0.993245 4.247511 9.555556 0.105167 1.004930 5.243999 9.666667 0.105167 1.016616 5.903852 9.777778 0.105167 1.028301 6.401869 9.888889 0.105167 1.039986 6.835999 10.00000 0.105167 1.051671 7.243855 10.11111 0.105167 1.063357 7.629708 default[58]10/21/2023 12:41:41 PM Page 28 END FTABLE 1 END FTABLES EXT SOURCES <-Volume-> <Member> SsysSgap<--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # tem strg<-factor->strg <Name> # # <Name> # # *** WDM 2 PREC ENGL 1 PERLND 1 999 EXTNL PREC WDM 2 PREC ENGL 1 IMPLND 1 999 EXTNL PREC WDM 1 EVAP ENGL 0.76 PERLND 1 999 EXTNL PETINP WDM 1 EVAP ENGL 0.76 IMPLND 1 999 EXTNL PETINP END EXT SOURCES EXT TARGETS <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Volume-> <Member> Tsys Tgap Amd *** <Name> # <Name> # #<-factor->strg <Name> # <Name> tem strg strg*** RCHRES 1 HYDR RO 1 1 1 WDM 1000 FLOW ENGL REPL RCHRES 1 HYDR STAGE 1 1 1 WDM 1001 STAG ENGL REPL COPY 1 OUTPUT MEAN 1 1 48.4 WDM 701 FLOW ENGL REPL COPY 501 OUTPUT MEAN 1 1 48.4 WDM 801 FLOW ENGL REPL END EXT TARGETS MASS-LINK <Volume> <-Grp> <-Member-><--Mult--> <Target> <-Grp> <-Member->*** <Name><Name> # #<-factor-> <Name><Name> # #*** MASS-LINK 2 PERLND PWATER SURO 0.083333 RCHRES INFLOW IVOL END MASS-LINK 2 MASS-LINK 3 PERLND PWATER IFWO 0.083333 RCHRES INFLOW IVOL END MASS-LINK 3 MASS-LINK 5 IMPLND IWATER SURO 0.083333 RCHRES INFLOW IVOL END MASS-LINK 5 MASS-LINK 12 PERLND PWATER SURO 0.083333 COPY INPUT MEAN END MASS-LINK 12 MASS-LINK 13 PERLND PWATER IFWO 0.083333 COPY INPUT MEAN END MASS-LINK 13 MASS-LINK 15 IMPLND IWATER SURO 0.083333 COPY INPUT MEAN END MASS-LINK 15 MASS-LINK 16 RCHRES ROFLOW COPY INPUT MEAN END MASS-LINK 16 END MASS-LINK END RUN default[58]10/21/2023 12:41:41 PM Page 29 Predeveloped HSPF Message File default[58]10/21/2023 12:41:41 PM Page 30 Mitigated HSPF Message File ERROR/WARNING ID: 238 1 The continuity error reported below is greater than 1 part in 1000 and is therefore considered high. Did you specify any "special actions"? If so, they could account for it. Relevant data are: DATE/TIME: 1958/ 8/31 24: 0 RCHRES : 1 RELERR STORS STOR MATIN MATDIF -2.052E-03 0.00000 0.0000E+00 0.00000 -1.617E-07 Where: RELERR is the relative error (ERROR/REFVAL). ERROR is (STOR-STORS) - MATDIF. REFVAL is the reference value (STORS+MATIN). STOR is the storage of material in the processing unit (land-segment or reach/reservior) at the end of the present interval. STORS is the storage of material in the pu at the start of the present printout reporting period. MATIN is the total inflow of material to the pu during the present printout reporting period. MATDIF is the net inflow (inflow-outflow) of material to the pu during the present printout reporting period. ERROR/WARNING ID: 238 1 The continuity error reported below is greater than 1 part in 1000 and is therefore considered high. Did you specify any "special actions"? If so, they could account for it. Relevant data are: DATE/TIME: 1993/ 9/30 24: 0 RCHRES : 1 RELERR STORS STOR MATIN MATDIF -5.968E-03 0.00000 0.0000E+00 0.00000 -5.538E-08 Where: RELERR is the relative error (ERROR/REFVAL). ERROR is (STOR-STORS) - MATDIF. REFVAL is the reference value (STORS+MATIN). STOR is the storage of material in the processing unit (land-segment or reach/reservior) at the end of the present interval. STORS is the storage of material in the pu at the start of the present printout reporting period. MATIN is the total inflow of material to the pu during the present printout reporting period. MATDIF is the net inflow (inflow-outflow) of material to the pu during the present printout reporting period. ERROR/WARNING ID: 238 1 The continuity error reported below is greater than 1 part in 1000 and is therefore considered high. Did you specify any "special actions"? If so, they could account for it. Relevant data are: default[58]10/21/2023 12:41:41 PM Page 31 DATE/TIME: 2006/ 8/31 24: 0 RCHRES : 1 RELERR STORS STOR MATIN MATDIF -2.239E-01 0.00000 0.0000E+00 0.00000 -1.151E-09 Where: RELERR is the relative error (ERROR/REFVAL). ERROR is (STOR-STORS) - MATDIF. REFVAL is the reference value (STORS+MATIN). STOR is the storage of material in the processing unit (land-segment or reach/reservior) at the end of the present interval. STORS is the storage of material in the pu at the start of the present printout reporting period. MATIN is the total inflow of material to the pu during the present printout reporting period. MATDIF is the net inflow (inflow-outflow) of material to the pu during the present printout reporting period. default[58]10/21/2023 12:41:41 PM Page 32 Disclaimer Legal Notice This program and accompanying documentation are provided 'as-is' without warranty of any kind. The entire risk regarding the performance and results of this program is assumed by End User. Clear Creek Solutions Inc. and the governmental licensee or sublicensees disclaim all warranties, either expressed or implied, including but not limited to implied warranties of program and accompanying documentation. In no event shall Clear Creek Solutions Inc. be liable for any damages whatsoever (including without limitation to damages for loss of business profits, loss of business information, business interruption, and the like) arising out of the use of, or inability to use this program even if Clear Creek Solutions Inc. or their authorized representatives have been advised of the possibility of such damages. Software Copyright © by : Clear Creek Solutions, Inc. 2005-2023; All Rights Reserved. Clear Creek Solutions, Inc. 6200 Capitol Blvd. Ste F Olympia, WA. 98501 Toll Free 1(866)943-0304 Local (360)943-0304 www.clearcreeksolutions.com