Certification and Order Coverage
This Clean Water Act (CWA) section 401 Water Quality Certification (Certification) and Order is issued to the City of Richmond (City; Permittee).
Pursuant to CWA section 404, the Permittee requested authorization to fill and discharge to waters of the U.S. from the U.S. Army Corps of Engineers (Corps), Regulatory Branch under a Nationwide Permit (NWP). The Corps issued a letter on December 20, 2022, provisionally notifying the Permittee that the Flood Risk Reduction in the Rheem Creek Watershed Project (Project) may be authorized under NWPs 7 (Outfall Structures) and 27 (Aquatic Habitat Restoration, Enhancement and Establishment Activities) pursuant to CWA section 404 (33 USC § 1344 et seq.
) (Corps File No. 2022-00042S).
The Permittee applied to the San Francisco Bay Regional Water Quality Control Board (Water Board) requesting Certification verifying the Project does not violate State water quality standards. The application for Certification was received on October 13, 2022. The following sections are derived from the Application.
1. Project
The California State Coastal Conservancy (SCC) awarded American Rivers and its project partners, The Watershed Project and Restoration Design Group (RDG), a grant to work with the local community, the City, and others to identify ecological approaches that address flooding in the Rollingwood neighborhood. The Rheem Creek at Rollingwood Flooding Assessment (RDG, May 15, 2020) summarizes the cause of flooding and potential solutions based on resident surveys, topographic surveys, historical research, hydraulic modeling, and site observations.
The Project, which will implement measures to reduce flood risk and enhance wildlife habitat, is based on the findings of the flood assessment and will remove invasive species and excessive sediment, grade a geomorphically stable channel, and plant native riparian vegetation to shade out invasive plants and improve creek habitat.
1.1 Site Description
The Project reach forms the approximate border between the City’s Fairmede neighborhood and the Rollingwood neighborhood in unincorporated Contra Costa County (lat. 37.966355, long. -122.332559). After flowing through the Project site, the Creek flows northwest through the cities of San Pablo and Richmond and into the San Francisco Bay (Bay) in the vicinity of the Dotson Family Marsh. The Creek corridor is approximately 30 feet wide and bordered by private homes on both sides. Richmond residents living in the Fairmede neighborhood own the Creek as their backyard property lines extend past the south side of the Creek. Water from the Creek has been flooding adjacent neighbors and nearby streets to the south on an annual basis for decades. The flood assessment completed in 2020 determined there are two primary causes for the flooding: (1) deposition of sediment sufficient to completely fill the channel in some areas, and (2) invasive, high-roughness vegetation growing along the bed and banks of the Creek between the intersection of Annapolis Avenue and Moyers Road on the upstream end, and Contra Costa College on the downstream end.
The Creek includes open water habitat, emergent wetlands, and ruderal riparian vegetation along the ban
ks. Details of the existing vegetation types are included in the Application.
Water Quality Certification and Order Place ID 885993 Flood Risk Reduction in the Rheem Creek Watershed Project RM 451029
1.2 Project Description
The Project will include grading and excavating sediment along approximately 1,200 linear feet (LF) and clearing vegetation and replanting along approximately 1,500 LF of the Creek respectively. Two storm drains that convey street runoff to the Creek will be replaced: (1) a 12- inch pipe extending from Greenwood Court to the Creek will be replaced with a 24-inch pipe; and (2) a 12-inch pipe extending from Greenwood Drive will be replaced with a 12-inch pipe and inlets at both locations will be replaced. Sediment will be removed from the culvert beneath Fordham Street. Six trees, including five riparian trees (four willows and an ash), will be removed and replaced with approximately 176 native riparian trees ranging in size from D40 to 15 gallon, plus willow poles, native seed mix, and native ground cover container plants. The Project will be implemented as shown on the plans, Flood Risk Reduction in the Rheem Creek Watershed, Cities of Richmond & San Pablo, 90% Plan Set (RDG, Inc., November 30, 2022), and as discussed in the Flood Risk Reduction in the Rheem Creek Watershed, Design Basis Report (RDG, February 7, 2022), with minor revisions to include invasive plant removal, sheet mulching, and weeding within the central reach of the Creek upstream of Fordham Street where sediment removal will not occur.
Water Diversion: In-stream grading will be limited to the dry season (April 15 to October 31) to the maximum extent feasible when the stream flows are lowest. Water diversion will likely be necessary and dewatering details will be developed and submitted to the Water Board before the start of construction.
2. Impacts to Waters of the State
The Water Board has independently reviewed the Project record to analyze impacts to water quality and the environment and designated beneficial uses within the Project’s watershed. The San Francisco Bay Basin Water Quality Control Plan (Basin Plan) defines the beneficial uses of waters of the State. The Basin Plan assigns the following beneficial uses to the Creek: warm freshwater habitat, wildlife habitat, and water contact and non-contact recreation.
2.1 Fill and Discharge
The Project will temporarily impact approximately 0.23 acre along 1,200 linear feet (LF) of the Creek below the ordinary high-water mark. Within this area approximately 0.1 acre of other waters will be impacted, and 0.13 acre of emergent freshwater wetlands will be removed. The wetlands, which have formed on sediment deposits that will be removed, will be converted to open waters. The impact area includes a non-Corps jurisdictional swale located as shown on
Figure 4, Sheet 2- East, Biological Assessment, Rheem Creek Ecological Solutions Project (LSA, January 2022). Approximately 900 cubic yards of sediment will be excavated and hauled offsite to an approved upland disposal site. Temporary impacts to riparian habitat along the upper Creek banks will occur over an additional 0.55 acre during removal of invasive vegetation and approximately six riparian trees. The Project will permanently impact approximately 0.13 acre of emergent freshwater wetlands with instream vegetation removal and 0.007 acre of other waters for placement of 195 cubic yards of rock scour protection at the replaced storm drain outfalls.
3. Mitigation
To mitigate for the Project’s permanent and temporary impacts to State waters, the Permittee will implement the restoration plan as shown on Sheets L-4.0, L-4.2, L-4.3, L-4.4, and L-5.0 included in the Flood Risk Reduction in the Rheem Creek Watershed, Cities of Richmond & San Pablo, 90% Plan Set (RDG, Inc., November 30, 2022). Restoration work includes planting of Water Quality Certification and Order Place ID 885993 Flood Risk Reduction in the Rheem Creek Watershed Project RM 451029
native riparian trees and plants in accordance with the schedule shown on the above noted plan sheets. The planting plan has been designed to avoid use of large trees in the vicinity of utilities in the Project vicinity (overhead power lines and a sanitary sewer). The overall goal is to enhance riparian tree canopy cover that is expected to reduce growth of instream vegetation that can contribute to flow impedance and flooding. Post-construction activities include maintenance and monitoring as described in the Maintenance Plan, Flood Risk Reduction in the Rheem Creek Watershed (RDG, October 11, 2022) (Maintenance Plan) and the Monitoring Plan, Flood Risk Reduction in the Rheem Creek Watershed (RDG, October 11, 2022) (Monitoring Plan). The intent of the Maintenance Plan is to provide guidance to the Permittee and/or its representatives regarding maintenance of the new plants and restored Creek channel.
The Monitoring Plan includes Project goals and objectives and vegetation and channel morphology success criteria. Although some monitoring will occur every year, monitoring results will be reported after years 1-5, 7, 9, and 10. Until the riparian tree canopy develops to provide shade over the Creek, adaptive maintenance may include removal of instream vegetation or sediment on a periodic basis during the 10-year monitoring period after consultation with Water Board staff and approval by the Executive Officer. Under post-Project conditions the site will remain closed to the public as private property under a public utility easement and managed jointly by the Permittee and adjacent property owners.
The Project will include development and implementation of a construction stormwater pollution and prevention plan to avoid and minimize construction-related water quality effects. The plan will identify specific best management practices (BMPs) for each construction activity to eliminate or minimize the potential for the discharge of polluted stormwater or unauthorized non- stormwater into the Creek.
4. California EcoAtlas
Regional, state, and national studies have determined that tracking of mitigation and restoration projects must be improved to better assess the performance of these projects, following monitoring periods that last several years. To effectively carry out the State’s Wetlands Conservation Policy of no net loss to wetlands, the State needs to closely track both losses and successes of mitigation and restoration projects affecting wetlands and other waters of the State. The Water Board must also track project performance in Bay Area creeks subject to routine repair and maintenance activities, such as recurring instabilities. Therefore, we adopted the digital interactive mapping tool called EcoAtlas.
[1] EcoAtlas is a web-based tool that
integrates maps, project plans, site conditions, restoration efforts, and other elements on a project-by-project basis based on data inputs. Accordingly, we require the Permittee to upload their Project information to EcoAtlas with the Project Tracker tool at https://ptrack.ecoatlas.org (see Condition 13). The San Francisco Estuary Institute developed EcoAtlas and mai ntains detailed instructions for Project Tracker on its website at https://ptrack.ecoatlas.org/instructions.
5. CEQA Compliance
Pursuant to the requirements of the California Environmental Quality Act (CEQA), as lead agency the City of Richmond filed a Notice of Exemption (NOE) for the Project on December 8, 2020. The Project is categorically exempt from CEQA pursuant to CEQA Guidelines section 15333 for small habitat restoration projects (State Clearinghouse No. 2022050390). The Water Board, as a responsible agency under CEQA, concurs that the exemption is appropriate and
[1] Source: California Wetlands Monitoring Workgroup (CWMW). EcoAtlas. Accessed March 12, 2019. https://www.ecoatlas.org. The CWMW includes SFEI, State Board, U.S. EPA Region 9, and other agencies with similar goals to track effects of projects in wetlands and other aquatic habitats.
Water Quality Certification and Order Place ID 885993 Flood Risk Reduction in the Rheem Creek Watershed Project RM 451029
finds that all the requirements in this Order appropriately address the Project’s potentially significant impacts under the Water Board’s purview.
6. Conditions
I, Eileen White, Executive Officer, do hereby issue this Order certifying that any discharge from the proposed Project will comply with the applicable provisions of sections 301 (Effluent Limitations), 302 (Water Quality Related Effluent Limitations), 303 (Water Quality Standards and Implementation Plans), 306 (National Standards of Performance), and 307 (Toxic and Pretreatment Effluent Standards) of the Clean Water Act, and with other applicable requirements of State law. This discharge is also regulated under State Water Resources Control Board Order No. 2003-0017-DWQ, “General Waste Discharge Requirements for Dredge and Fill Discharges That Have Received State Water Quality Certification,” which requires compliance with all conditions of this Order, including the following:
6.1 Regulatory Compliance and Work Windows
1. Design Conformance. The Pr oject shall be constructed in conformance with the Application materials and as described in this Certification, including the design and descriptions in the Flood Risk Reduction in the Rheem Creek Watershed, Cities of Richmond & San Pablo, 90% Plan Set (RDG, Inc., November 30, 2022), and the Flood Risk Reduction in the Rheem Creek Watershed, Design Basis Report (RDG, February 7, 2022). The Permittee shall fully comply with engineering plans, specifications, and technical reports submitted in the Application or supplemental materials required as part of this Certification. Any changes to information provided in the Application must be submitted to the Water Board and receive Executive Officer approval before the changes are implemented;
Rationale: This condition is necessary to ensure compliance with the permit and appli
cable conditions and to ensure that the proposed work and final restoration work has been conducted in accordance with the permit and all applicable conditions. (California Water Code (CWC) section 13264).
2. Corps Compliance. The P ermittee shall adhere to the conditions of the NWP issued by the Corps (Corps File No. SPN-2022-00042S) and all requirements associated with the authorization;
3. CDFW Compliance. The Per mittee shall adhere to all terms set forth in the Streambed Alteration Agreement Issued by California Department of Fish & Wildlife (CDFW);
4. Special Status Species. This C ertification does not allow for the take, or incidental take, of any special status species. The Permittee shall use the appropriate protocols, as approved by CDFW to ensure that Project activities do not impact the Beneficial Use of the Preservation of Rare and Endangered Species; Rationale: Condit
ions 2 through 4 are required pursuant to California Code of Regulations Title 23 (23 CCR) section 3856(e), which requires that copies be provided to the Water Boards of “any final and signed federal, state, and local licenses, permits, and agreements (or copies of the draft documents, if not finalized) that will be required for any construction, operation, maintenance, or other actions associated with the activity.”
Water Quality Certification and Order Place ID 885993 Flood Risk Reduction in the Rheem Creek Watershed Project RM 451029
5. Work Window. To protect waters of the State from sediment generation or debris associated with construction activity and to minimize potential impacts to aquatic species, construction in waters of the State is restricted to the April 15 to October 31 dry season or to the end of any extension granted by Water Board staff on the basis of five-day weather forecasts;
Rationale: This c ondition is necessary to ensure compliance with the permit and applicable conditions and to ensure that the proposed work and final restoration work has been conducted in accordance with the permit and all applicable conditions. (CWC section 13264).
6. Precipitation and Construction Planning. P
recipitation forecasts shall be
considered when planning construction activities. The Permittee shall monitor the 72- hour forecast from the National Weather Service at http://www.nws.noaa.gov. When there is a forecast of more than 40% chance of rain, or at the onset of unanticipated precipitation, the Permittee shall remove all equipment from waters of the State, implement erosion and sediment control measures (e.g., jute, straw, coconut fiber erosion control fabric, coir logs, straw) to prevent discharge of stormwater runoff containing sediment to State waters, and cease all Project activities in waters of the State;
Rationale: This c
ondition is necessary to ensure avoidance and minimization of impacts to waters of the State and Beneficial Uses from construction activities (CWC section 13376 et seq.). These conditions are also necessary to minimize adverse impacts to water quality from construction activities to the maximum extent practicable (State Board Resolution No. 68-16; 40 CFR Part 131.12 (a)(1); CWC section 13369; Basin Plan section 2.1.14).
6.2 General Construction
7. Discharge Prohibition. No unaut horized construction-related materials or wastes (e.g., debris, soil, silt, excessive bark, rubbish, creosote-treated wood, raw cement/concrete or washings thereof, asphalt, paint or other coating material, oil or other petroleum products, or any other substances which could be hazardous to aquatic life) shall be allowed to enter into or be placed where they may be washed by rainfall or runoff into waters of the State. When construction is completed, any excess material shall be removed from the work area and any areas adjacent to the work area where such material may be discharged to waters of the State;
8. Equipment Maintenance Prohibition. No f
ueling, cleaning, or maintenance of
vehicles or equipment shall take place within waters of the State, or within any areas where an accidental discharge to waters of the State may occur; and construction materials and heavy equipment must be stored outside of waters of the State. When work within waters of the State is necessary, best management practices shall be implemented to prevent accidental discharges;
Rationale: Condit ions 7 and 8 are necessary to ensure that contaminated material is not placed within waters of the State (Basin Plan sections 3.3.12, 3.3.19, and 4.19) and to ensure avoidance and minimization of impacts to waters of the State from construction activities (CWC section 13376 et seq.). These conditions are also necessary to minimize adverse impacts to water quality from construction activities to Water Quality Certification and Order Place ID 885993 Flood Risk Reduction in the Rheem Creek Watershed Project RM 451029
the maximum extent practicable (State Board Resolution No. 68-16; 40 CFR Part 131.12 (a)(1); CWC section 13369; Basin Plan section 2.1.14).
9. Beneficial Use Impacts. Al l work performed within waters of the State shall be completed in a manner that minimizes impacts to beneficial uses and habitat; measures shall be employed to minimize disturbances along waters of the State that will adversely impact the water quality of waters of the State. Disturbance or removal of vegetation shall not exceed the minimum necessary to complete Project implementation;
Rationale: This condition is necessary to ensure that Project implementation does not impact water quality in ways that impair the designated beneficial uses of waters of the State (Basin Plan Chs. 3 and 4) and to ensure minimization of impacts to waters of the State and, as well as to ensure successful restoration of all temporary impacts authorized (State Board Resolution No. 68-16; 40 CFR Part 131.12 (a)(1); CWC sections 13264 and 13369; Basin Plan Chs. 3 and 4).
6.3 Pre-Construction Reporting and Other Requirements
10. EcoAtlas Form. The
Permittee shall input Project information into EcoAtlas no later than 14 days from this Certification’s issuance date, consistent with Section 4 herein.
The Project information shall be added to the Project Tracker tool in EcoAtlas online at https://ptrack.ecoatlas.org. Instructions for adding information to EcoAtlas are available at https://ptrack.ecoatlas.org/instructions, or by contacting the Water Board staff listed on the cover page of this Certification. The Permittee shall notify the Water Board and submit documentation demonstrating the Project has been successfully added to Eco Atlas via email to [email protected], o r by mail to the attention of 401 Certifications Reports (see address on the letterhead), and include EcoAtlas_451029_Flood Risk Reduction Rheem Creek; Rationale: This c ondition is necessary to ensure compliance with the permit and applicable conditions (CWC section 13267).
11. Commencement of Construction. The Pe rmittee shall submit a Commencement of Construction Report acceptable to the Executive Officer. The Commencement of Construction Report shall be submitted no later than seven days prior to the start of initial construction activities. The report shall reference SOC_451029_Flood Risk Reduction Rheem Creek and shall be sent via email to RB2- [email protected] or by mail to the attention of 401 Certifications Reports (see address on the letterhead). The Commencement of Construction shall be submitted in same timeframe specified herein for multiple construction seasons, if necessary;
Rationale: This c ondition is necessary to assist in scheduling compliance inspections to ensure compliance with the permit and applicable conditions (CWC section 13267).
12. Photo-Docum entation Points. Prior to the start of construction, the Permittee shall establish a minimum of 15 photo-documentation points to provide representative views of the Project site, including the outfall rock protection locations and the area at the upstream end of the site referred to as a non-jurisdictional swale on Figure 4, Sheet 2- East of the Biological Assessment, Rheem Creek Ecological Solutions Project (LSA, January 2022). The photo-documentation points shall be used to track Water Quality Certification and Order Place ID 885993 Flood Risk Reduction in the Rheem Creek Watershed Project RM 451029
the Project’s pre- and post-construction conditions and to document progress of mitigation performance during the mitigation monitoring period. The Permittee shall prepare a site map with the photo-documentation points clearly marked. Prior to, and following construction, the Permittee shall photographically document the pre- and post-construction conditions. These post-construction photographs and map shall be submitted, along with the as-built and mitigation monitoring reports described below; Rationale: This condition is necessary to ensure compliance with the permit and applicable conditions and to ensure that the proposed work has been conducted in accordance with the permit and all applicable conditions (CWC section 13267).
6.4 Active Construction and Post-Construction Reporting Requirements
13. As-Built Report. The Pe rmittee shall prepare and submit an as-built report acceptable to the Executive Officer within 60 days of completing the work, including the implementation of mitigation activities. The report shall include a description of the areas of actual disturbance during Project construction and the photographs and map specified in Condition 12. The report(s) shall clearly identify and illustrate the Project activities that occurred and the locations where impacts to waters of the State occurred. The as-built report shall include the 100 percent construction plans marked with the contractor’s field notes that clearly depict any deviations made during construction from the designs reviewed by the Water Board. The as-built report shall be submitted via email to (1) the Water Board staff responsible for certifications in Contra Costa County and (2) [email protected]. Thi s report shall
reference As Built_451029_Flood Risk Reduction Rheem Creek, and the date of Project completion;
14. Project Construction Completion Report. The Permittee shall submit a Notice of Project Construction Completion (NOC) acceptable to the Executive Officer to notify the Water Board that the Project. Including mitigation plantings and monitoring, has been completed. The Completion Notice shall be submitted to the Water Board no later than 60 days after completing Project construction and mitigation monitoring and shall reference NOC_451029_Flood Risk Reduction Rheem Creek. The Notice may be combined with the Notice of Mitigation Monitoring Completion (Condition 20) and shall be sent via email to [email protected], or by mail to the
attention of 401 Certifications Reports (see address on the letterhead); Rationale: Condit ions 13 and 14 are necessary to ensure compliance with the permit and applicable conditions and to ensure that the Project has been conducted in accordance with the permit and all applicable conditions (CWC section 13267).
15. Annual Project Status. The Per mittee shall submit an Annual Project Status Report acceptable to the Executive Officer. The Annual Project Status report shall be submitted each year by January 31 until the permitted work is completed. The first status report shall be submitted commencing the calendar year after this Certification’s issuance. The report shall reference Status Report_451029_Flood Risk Reduction Rheem Creek, and state whether Project construction activities have been initiated or delayed. The Annual Project Status Report shall continue until a Notice of Project Construction Completion is received; Water Quality Certification and Order Place ID 885993 Flood Risk Reduction in the Rheem Creek Watershed Project RM 451029
6.5 Mitigation and Monitoring Requirements
16. Mitigation Im plementation. The Permittee shall implement the mitigation work as described in the Mitigation section of this Certification. Plants shall be irrigated by hand during the establishment period to ensure survival and growth. Rock used at the culvert outlets shall be kept to the minimum necessary to prevent scour at the discharge location and shall be set within the bed and bank to conform with contours upstream and downstream of the rock, with no bed or bank discontinuity. Project impacts and mitigation plantings shall occur during the same construction season;
17. Mitigation Monitoring & Maintenance. The Per
mittee shall monitor the Project’s
mitigation areas for a minimum period of ten years to assess development of channel morphology and the health, vigor, and canopy cover of riparian vegetation plantings.
Annual assessments of stream conditions, to include sediment accumulation or channel erosion shall be performed, with monitoring conducted at approximately the same time each year during the low flow season, and at least twice during high flows in the first three years of monitoring, and once during high flows in the last two years of monitoring. Vegetation and geomorphic monitoring shall be performed at a minimum of eight cross-sections along the Project reach, and visual observations at locations between the cross-sections shall be made to document areas where conditions differ significantly from the monitored cross sections. If monitoring indicates the mitigation efforts have not adequately compensated for Project impacts, the Permittee shall document these observations in the annual reports and make remedial action recommendations, as necessary. If high flow events indicate a need for adaptive management of stream morphology, then measures shall be proposed and implemented in consultation with Water Board staff. If monitoring demonstrates that plants/trees are on a trajectory to meet the performance criteria at the end of five years and no replanting is required due to lack of survival, then monitoring during the last five years may be limited to Years 7, 9 and 10. If replacement plantings are necessary then vegetation monitoring shall be performed each year and the monitoring period shall be extended accordingly;
18. Annual Monitoring Reports. The Permittee shall submit annual monitoring reports, acceptable to the Executive Officer, by January 31 after monitoring years 1-5, and years 7, 9, and 10. The first monitoring year commences in the calendar year after completing the mitigation plantings. At the time of this Certification the mitigation completion is anticipated in 2023. Therefore, monitoring of mitigation areas shall begin in 2024 and the first annual monitoring report shall be due on January 31, 2025, unless the Project is completed at a different time. The annual reports shall summarize each year’s monitoring results and include detailed information on the geomorphic conditions in the Creek and riparian planting survival and growth, including canopy cover. The annual reports shall compare data to previous monitoring years and describe mitigation stream evolution and any need for adaptive management measures to ensure progress in meeting, and conforming to, the Project goals of increased riparian functions and flood protection. The annual reports shall include the status of long-term management measures as described in Condition 21, and shall also include, but not be limited to, the following:
a) Photographs: The annua
l reports shall include photographs taken during the
monitoring year from the photo-documentation points specified in Condition 12.
Water Quality Certification and Order Place ID 885993 Flood Risk Reduction in the Rheem Creek Watershed Project RM 451029
The photographs shall include captions that state the photograph’s point of view, photo-documentation point location, and date photographed. b) Environmental Drivers: Each monitoring report shall describe precipitation events or periods of drought that occurred at the site during the monitoring year. The effects of the Project and environmental drivers (e.g., precipitation events, drought events) on site conditions shall be described in reference to the monitoring year’s precipitation events. Irrigation of planted riparian vegetation is acceptable providing at least two years of monitoring for attainment of performance criteria occur after irrigation is terminated.
If adverse impacts to waters of the State are observed during the monitoring period or if riparian vegetation is not developing as anticipated, additional mitigation may be required by the Executive Officer, including but not limited to extension of the monitoring period. The annual report shall reference AMR_451029_Flood Risk Reduction Rheem Creek and shall be submitted via email to RB2- [email protected] and the Water Board staff responsible for 401 certifications in Contra Costa County. Annual reports may also be submitted in hard copy to the attention of 401 Certifications Reports (see the address on the letterhead);
19. Performance Criteria. The pri
mary ecological goals of the Project are to allow
improved flood flow conveyance and create effective riparian shade canopy cover over the Creek to reduce the likelihood of in-channel vegetation establishment that would reduce flood conveyance. The Project also anticipates evolution of the channel morphology in the sediment removal areas to mimic existing active channel dimensions and floodplain development at other locations within the Creek.
Development of instream complexity may be limited and governed by future sediment supply. To evaluate performance the Permittee shall conduct monitoring to assess success of the riparian habitat growth, channel shading, and topographic changes in and adjacent to the channel. Reconfiguration of physical features within the channel (floodplain, meandering within the corridor, etc.) are expected and are acceptable providing such changes do not adversely affect flood conveyance, bank stability, structural integrity, or Creek habitat quality and function. Tree survival by species shall be >80% and bare ground shall be <75%, <60%, <40%, <30% and <25% at the end of the first five monitoring years. Tree survival and bare ground shall be sustained at >80% and <25% at the end of the 10-year monitoring period. Development of canopy cover shall be monitored, quantified, and reported in the annual reports. The primary geomorphic performance criterion for channel morphology is stability (no excessive bed or bank erosion or sedimentation), provision of flood flow conveyance, and increased complexity of channel morphology;
20. Notice of Mitigation Monitoring Completion. Wit
hin 30 days of confirming that the
Project’s mitigation has been completed and performance criteria have been met, the Permittee shall submit, acceptable to the Executive Officer, a Notice of Mitigation Completion that references NMMC_451029_Flood Risk Reduction Rheem Creek.
This report shall be submitted via email to [email protected] and t
o the Water Board staff responsible for 401 certifications in Contra Costa County.
Hard copies may also be submitted to the address on the letterhead, to the attention of 401 Certifications;
Water Quality Certification and Order Place ID 885993 Flood Risk Reduction in the Rheem Creek Watershed Project RM 451029
21. Long-Term Management and Protection of Riparian Areas. The Permittee shall coordinate with their own staff and local homeowners/residents to optimize management and maintenance of the Creek, including the riparian vegetation in accordance with the Maintenance Plan and the Monitoring Plan. Coordination shall include providing written and verbal information to all homeowners/residents along the Creek about acceptable vegetation management practices. As needed signs shall be posted at strategic locations to inform parties, including utility managers, of the Maintenance Plan and goals to maintain riparian canopy cover over the Creek and prevent unnecessary vegetation removal or management measures. The Annual Reports shall include information regarding the status of the coordination effort; Rationale: Condit
ions 15-21 are necessary to ensure compliance with the permit and applicable conditions and to ensure that the Project and mitigation work have been conducted in accordance with the permit and all applicable conditions (CWC section 13267).
6.6 Administrative and General Compliance
23. Site Access. The Permittee shall grant Water Board staff or an authorized representative, upon presentation of credentials and other documents as may be required by law, permission to: (1) enter upon the Project site or compensatory mitigation site(s) where a regulated facility or activity is located or conducted, or where records are kept; (2) have access to and copy any records that are kept and are relevant to the Project or the requirements of this Order; (3) inspect any facilities, equipment, practices, or operations regulated or required under this Order; and (4) sample or monitor for the purposes of assuring Order compliance; Rationale: This c
ondition is necessary to assist in scheduling compliance inspections and to ensure compliance with the permit and applicable conditions (CWC section 13267).
24. Certification and Order at Site. A
copy of this Order shall be provided to any
consultants, contractors, and subcontractors working on the Project. Copies of this Order shall remain at the Project site for the duration of this Order. The Permittee shall be responsible for work conducted by its consultants, contractors, and any subcontractors;
Rationale: This
condition is necessary to ensure compliance with the permit and applicable conditions (CWC sections 13170 and 13245).
25. Water Quality Violations Notification. The Permittee shall notify the Water Board of any violations of water quality standards, along with the cause of such violations, as soon as practicable (ideally within 24 hours). Notification may be via telephone, email, delivered written notice, or other verifiable means;
Rationale: This c
ondition is necessary to minimize adverse impacts to water quality (CWC sections 13385 and 13267).
26. Ownership Change Notification. The Permittee shall provide a signed and dated notification to the Water Board of any change in ownership or interest in ownership of any Project area at least 10 days prior to the transfer of ownership. The purchaser shall also submit a written request to the Water Board to be named as the permittee Water Quality Certification and Order Place ID 885993 Flood Risk Reduction in the Rheem Creek Watershed Project RM 451029
in an amended order. Until this Order has been modified to name the purchaser as the permittee, the Permittee shall continue to be responsible for all requirements set forth in this Order;
27. Discharge Change Notification. In accordance with CWC section 13260, the Permittee shall file with the Water Board a report of any material change or proposed change in the ownership, character, location, or quantity of this waste discharge. Any proposed material change in operation shall be reported to the Executive Officer at least 30 days in advance of the proposed implementation of any change. Changes to discharges include, but are not to be limited to, significant new soil disturbances, proposed expansions of development, or any change in drainage characteristics at the Project site. For the purpose of this Order, this includes any proposed change in the boundaries of the area of wetland/waters of the State to be impacted; Rationale: Condit ions 26 and 27 are necessary to ensure compliance with the permit and applicable conditions (CWC section 13264).
28. Submittal of Reports. Where this Certification requires submittal of reports, including plans, reports, or related information, the submitted reports shall be acceptable to the Executive Officer;
Rationale: This c ondition is necessary to ensure compliance with the permit and applicable conditions (CWC section 13267).
29. Individual Waste Discharge Requirements. Should new information come to our attention that indicates a water quality problem with this Project, the Water Board may issue Waste Discharge Requirements pursuant to CWC sections 13263 and/or 13377 and 23 CCR section 3857;
30. Expiration. This O
rder shall continue to have full force and effect regardless of the expiration or revocation of any federal license or permit issued for the Project;
6.7 Standard Conditions
31. Certification and Order Modification. This Order is subject to modification or revocation upon administrative or judicial review, including review and amendment pursuant to CWC sections 13320 and 13330 and 23 CCR section 3867;
32. Hydroelectric Facilities. This
Order does not apply to any discharge from any
activity involving a hydroelectric facility requiring a Federal Energy Regulatory Commission (FERC) license or an amendment to a FERC license, unless the pertinent certification application was filed pursuant to 23 CCR subsection 3855(b) and that application specifically identified that a FERC license or amendment to a FERC license for a hydroelectric facility was being sought;
33. Application Fee. This
Certification and Order is conditioned upon full payment of the required fee, including annual fees, as set forth in 23 CCR section 3833. The Project’s Application and Project fee of $645, calculated using the 2021-2022 Water Quality Certification Dredge and Fill Application Fee Calculator, Category D – Ecological Restoration and Enhancement Projects, was received by the Water Board on February 14, 2023;
Water Quality Certification and Order Place ID 885993 Flood Risk Reduction in the Rheem Creek Watershed Project RM 451029
34. Annual Fee Invoice. In accordance with 23 CCR section 2200, the Permittee shall pay an annual fee to the Water Board each fiscal year (July 1 – June 30) until Project construction and mitigation activities are completed and an acceptable Notice of Project Mitigation Monitoring Completion is received by the Water Board (Note: the Annual Fee may be changed by the State Water Board; at the time of Certification it was $365 per year). Annual fees will be automatically invoiced to the Permittee. The Permittee must notify the Water Board when mitigation is complete with a final report in order to request termination of annual billing.
Rationale: Condit
ions 31-34 are standard conditions that “shall be included as conditions of all water quality certification actions” (23 CCR section 3860(a)).
In addition to the information noted above, these conditions are individually required to ensure compliance with narrative water quality objectives in the Basin Plan, the state anti-degradation policy (State Water Board Resolution No. 68-16), the California Wetlands Conservation Policy (Executive Order W-59-93, Basin Plan Chs. 4 and 5), and Water Board policies for the protection of wetlands and waters (Basin Plan Ch. 4, including Ch. 4.23).
The conditions above are individually authorized as noted above and by 23 CCR sections 3838 and 3859 and CWC Div. 7, Ch. 4, Article 4, Waste Discharge Requirements.
This Order applies to the Project as proposed in the application materials and designs referenced above in the conditions of Certification. Be advised that failure to implement the Project in conformance with this Order is a violation of this Certification. Any violation of Certification conditions is a violation of State law and subject to administrative civil liability pursuant to CWC section 13350. Failure to meet any condition of this Certification may subject the Permittee to civil liability imposed by the Water Board to a maximum of $10,000 per day of violation or $10 for each gallon of waste discharged in violation of this action. Any requirement for a report made as a condition to this Certification is a formal requirement pursuant to CWC section 13267, and failure or refusal to provide, or falsification of such required report, is subject to civil liability as described in CWC section 13268. The burden, including costs, of these reports bears a reasonable relationship to the need for the report and the benefits to be obtained.
Should new information come to our attention that indicates a water quality problem with this Project, the Water Board may issue Waste Discharge Requirements.
If you have any questions concerning this Order, please contact Kathryn Hart of my staff via email to [email protected] or by phone at (510) 622-2356. All future
correspondence regarding this Project should reference the RM No. indicated at the top of this letter.
Sincerely,
__________________________
fo
r Eileen White
Executive Officer
Attachment: Project Drawings
Water Quality Certification and Order Place ID 885993 Flood Risk Reduction in the Rheem Creek Watershed Project RM 451029
cc: SWRCB, DWQ, [email protected]
Water Board, Victor Aelion, [email protected] CDFW, Andrew Chambers, Chambers, [email protected] U.S. EPA, Region 9:
EPA Mailbox: [email protected]
Jennifer Siu, [email protected]
Corps, SF Regulatory Branch:
Katerina Galacatos, [email protected]
ATTACHMENT
401 Water Quality Certification
Flood Risk Reduction in the Rheem
Creek Watershed Project
City of Richmond
Contra Costa County
SHEET
SCALE
DATE
DRAWN BY
DESIGN BY
CHECKED BY
Restoration Design Group, Inc.
2332 Fifth Street, Suite C
Berkeley, CA 94710
T 510.644.2798 F 510.644.2799
www.restorationdesigngroup.com
RENEWAL DATE
DATE
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#5536 SIGNATURE
DESCRIPTION
REVISIONS
DATEPROJECT TITLE
SHEET TITLEDESIGN PHASE
COVER
NTS
FLOOD RISK REDUCTION IN THE RHEEM CREEK WATERSHED
CITIES OF RICHMOND & SAN PABLO, CA
90% PLAN SET | NOVEMBER 30, 2022
CONSULTANTS:
LANDSCAPE ARCHITECTURE AND ENGINEERING:
RESTORATION DESIGN GROUP, INC.
RICH WALKLING, PROJECT MANAGER
2332C FIFTH STREET
BERKELEY, CA 94710
(510) 644-2798
SURVEYOR
PLS SURVEYS INC.
JOSEPH BRAJKOVICH, VP & SURVEY MANAGER
2220 LIVINGSTON ST SUITE 202
OAKLAND, CA 94606
(510) 261-0900
PROJECT LOCATION:
CLIENT:
AMERICAN RIVERS:
SARAH PUCKETT, CONSULTANT
2150 ALLSTON WAY
SUITE 320
BERKELEY, CA 94704
(510) 809-8010 X6
CITY OF RICHMOND:
PATRICK PHELAN, INFRASTRUCTURE ADMINISTRATOR
ENGINEERING & CAPITAL IMPROVEMENT PROJECTS
450 CIVIC CENTER PLAZA
RICHMOND, CA 94804
(510) 307-8111
PROJECT SITE
PROJECT SITE
SAN
FRANCISCO
BAY
SAN PABLO
I-80
I-580
SHEET LIST TABLE
T-1
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FLOOD RISK REDUCTION IN THE RHEEM CREEK WATERSHED
CREEK ENHANCEMENT
NOVEMBER 30, 2022
90% PLAN SET
--------
----
--------
--------
ES, MT
ES, MT, NQ
ES, MT, NQ
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Sheet List TableSheet Number
Sheet Title
T-1COVER
T-2PROJECT OVERVIEW
S-1TOPOGRAPHIC SURVEY
S-2TOPOGRAPHIC SURVEY
S-3TOPOGRAPHIC SURVEY
S-4TOPOGRAPHIC SURVEY
L-1.1DEMOLITION
L-1.2DEMOLITION
L-1.3DEMOLITION
L-1.4DEMOLITION
L-2.0LAYOUT & GRADING
L-2.1LAYOUT & GRADING
L-2.2LAYOUT & GRADING
L-2.3LAYOUT & GRADING
L-2.4LAYOUT & GRADING
L-3.0CROSS SECTIONS
L-3.1CROSS SECTIONS
L-3.2CROSS SECTIONS
L-4.0REVEGETATION
L-4.2REVEGETATION
L-4.3REVEGETATION
L-4.4REVEGETATION
L-5.0PLANTING DETAILS
RICHMOND
AC ASPHALT CONCRETE
BB BOTTOM OF BANK
CASQA CALIFORNIA STORMWATER
QUALITY ASSOCIATION
CLR CLEAR
CCENTERLINE
CONC CONCRETE
DI DRAINAGE INLET
EC EDGE OF BANKFULL CHANNEL
(E) EXISTING
EL ELEVATION
FG FINISH GRADE
FL FLOW LINE
FP FLOODPLAIN
FS FINISH SURFACE
GB GRADE BREAK
HP HIGH POINT
IE INVERT ELEVATION
LB LEFT BANK
LP LOW POINT
L.O.W. LIMIT OF WORK
MH MANHOLE
MM MEET AND MATCH
N.I.C. NOT IN CONTRACT
OC ON CENTER
OF OFFSET
O.R. OWNER'S REPRESENTATIVE
PA PLANTING AREA
PP PRESERVE AND PROTECT
RB RIGHT BANK
R.O.W RIGHT-OF-WAY
SD STORM DRAIN
SS SANITARY SEWER
TB TOP OF BANK
TBD TO BE DETERMINED
TYP. TYPICAL
UON UNLESS OTHERWISE NOTED
L
ABBREVIATIONS
SHEETS L-X.2
SHEETS L-X.3
GREENWOOD DR
MOYERS RD
ANNAPOLIS AVE
FORDHAM ST
SHANE DR
GREENWOOD DR
CITY OF
RICHMOND
UNINCORPORATED
CONTRA COSTA COUNTY
CITY OF
SAN PABLO
SHEETS L-X.4
SHEETS L-X.1
LEGEND
MUNICIPAL BOUNDARY
PARCEL BOUNDARY
RHEEM CREEK CENTERLINE
LIMIT OF WORK
PROJECT OVERVIEW
T-2
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FLOOD RISK REDUCTION IN THE RHEEM CREEK WATERSHED
CREEK ENHANCEMENT
NOVEMBER 30, 2022
90% PLAN SET
---- ----
----
---- ----
---- ----
1" = 100'-0"
ES, MT
ES, MT, NQ
ES, MT, NQ
SHEET
SCALE
DATE
DRAWN BY
DESIGN BY
CHECKED BY
Restoration Design Group, Inc.
2332 Fifth Street, Suite C
Berkeley, CA 94710
T 510.644.2798 F 510.644.2799
www.restorationdesigngroup.com
RENEWAL DATE
DATE
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#5536 SIGNATURE
DESCRIPTION
REVISIONS
DATEPROJECT TITLE
SHEET TITLEDESIGN PHASE
Feet
0100200
----
NOTE:
OUTFALL WORK ON SHEETS L-X.1 TO BE COORDINATED WITH NCE PROJECT ∆
N42°20'20"W
40.00 ∆
N25°50'20"W
127.00
∆
S87°19'40"E
386.39
S02°40'20"W
115.00
S87°19'40"E
292.79
S02°40'20"W
136.00
N86°00'00"W
123.00
N86°00'00"W
226.50
∆
2.84 ∆
Joseph Brajkovich
∆
N61°34'20"E
622.22
S63°00'00"W50.00
∆
N63°00'00"E
662.00
Joseph Brajkovich
∆
∆
S28°25'40"E93.47
∆
∆
Joseph Brajkovich
REMOVE EXISTING DI
PP UTILITY POLE
PP GUY WIRE
PP WATER METERS, LINES,
AND MISC UTILITIES
REMOVE 80 LF OF 12-INCH
CONC SD PIPE
REMOVE FENCE AND SITE
IMPROVEMENTS AS
REQUIRED TO COMPLETE
WORK, REPLACE IN KIND
REMOVE CMU WALL AND
REPLACE
1. MAINTAIN PROJECT PERIMETER FENCE FOR THE
DURATION OF THE CONSTRUCTION PERIOD.
2. PROTECT ALL IMPROVEMENTS NOT NOTED FOR
DEMOLITION.
3. PP ALL UTILITIES UNLESS OTHERWISE NOTED.
4. LEGALLY DISPOSE OF ALL MATERIAL CLEARED,
GRUBBED, DEMOLISHED, OR SALVAGED BUT
NOT UTILIZED FOR PROJECT OR ACCEPTED BY
OWNER. STOCKPILE ALL MATERIALS NOTED ON
PLANS FOR REUSE.
5. LOCATE EXISTING 10" SANITARY SEWER PIPE
AND MANHOLES. DETERMINE PIPE INVERT FOR
REVIEW BY ENGINEER PRIOR TO COMMENCING
EXCAVATION.
DEMOLITION NOTES
PROPERTY BOUNDARY
EASEMENT
LIMIT OF WORK (L.O.W.)
ORDINARY HIGH WATER
PAVING TO BE DEMOLISHED, RIPRAP TO BE
REMOVED. SEE DEMOLITION NOTES AND
NOTES ON PLAN.
FENCING GATES AND WALLS TO BE
REMOVED
CONSTRUCTION ACCESS
SCHEMATIC SYMBOL FOR ROUTING OF
DEWATERING LINE; SEE SPECIFICATIONS
SCHEMATIC SYMBOL FOR COFFER DAM AND
SEDIMENT BARRIER; SEE SPECIFICATIONS
AND NOTES
NOISE DAMPENING PUMP
TREE TO BE REMOVED, SALVAGE TRUNKS 9"
DIAMETER AND LARGER FOR USE AS
PLACED LOGS. GRIND STUMP TO 18" BELOW
LOWEST ADJACENT FINISH GRADE, SEE
GRADING PLANS.
TREE TO BE SALVAGED/TRANSPLANTED.
SEE NOTES ON LAYOUT.
TREE TO REMAIN, PRESERVE AND PROTECT
DEMOLITION LEGEND
1. PROVIDE STORM INLET PROTECTION
MEASURES AT ALL DI'S WITHIN THE PROJECT
SITE.
2. PROVIDE SWPPP AND ENSURE COMPLIANCE
THROUGHOUT THE DURATION OF
CONSTRUCTION.
3. SEE GRADING PLAN FOR ADDITIONAL EROSION
CONTROL NOTES.
EROSION CONTROL NOTES
5 1. IF SITE CONDITIONS REQUIRE, BIDDER TO DESIGN
DEWATERING SYSTEM. SEE SPECS FOR
CONDITIONS.
2. FIX DEWATERING LINE TO TOP OR SIDE OF
FORDHAM CULVERT TO ALLOW WORK AS SHOWN.
3. REMOVE DEWATERING SYSTEM IMMEDIATELY
FOLLOWING OWNER REVIEW OF FINAL GRADING.
DEWATERING NOTES
DEMOLITION
L-1.1
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FLOOD RISK REDUCTION IN THE RHEEM CREEK WATERSHED
CREEK ENHANCEMENT
NOVEMBER 30, 2022
90% PLAN SET
---- ----
---- ----
---- ----
1" = 10'-0"
ES, MT
ES, MT, NQ
ES, MT, NQ
SHEET
SCALE
DATE
DRAWN BY
DESIGN BY
CHECKED BY
Restoration Design Group, Inc.
2332 Fifth Street, Suite C
Berkeley, CA 94710
T 510.644.2798 F 510.644.2799
www.restorationdesigngroup.com
RENEWAL DATE
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#5536 SIGNATURE
DESCRIPTION
REVISIONS
DATEPROJECT TITLE
SHEET TITLEDESIGN PHASE
----
FT
01020
NOTE:
SEE NCE SHEETS FOR DEMOLITION,
CLEARING AND GRUBBING, AND EROSION
CONTROL MEASURES AT THIS LOCATION
NOTE TO CITY:
THIS WORK REQUIRES COORDINATION WITH
BOTH HOMEOWNERS.THERE ARE FENCES,
WALLS, PLANTINGS, AND LIKELY IRRIGATION
THAT WILL BE REMOVED.
FORDHAM ST
20+0021+0022+0023+0024+00
GREENWOOD DR
COMPLETELY REMOVESEDIMENT FROMWITHIN CULVERT
PP UTILITY POLE,
TYP.
PP GUY WIRE
PP CULVERT AND
ALL DRAINAGE
STRUCTURES, TYP.
CLEAR AND GRUB
ENTIRE L.O.W. AREA,
UON. SEE DEMOLITION
NOTES, SHEET
L-1.1
PP (E) WALL
PP (E) WALL
REMOVE FENCE ANDGATE TO EDGE OFNEIGHBORING FENCES,BOTH SIDES OF CREEK.EXTENT OF REMOVALSHALL BE REFINED PERO.R. DIRECTIONFOLLOWING VEGETATIONREMOVAL AT NO COST TOOWNER.
CONFORM CULVERTSEDIMENT REMOVAL TOEXISTING GRADES 25-FTUPSTREAM OFCULVERT. TRANSITIONGRADING ACROSS THEENTIRE 25-FOOTLENGTH.
CLEAR AND GRUB ASREQUIRED TOCONFORM GRADING
DEMOLITION
L-1.2
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FLOOD RISK REDUCTION IN THE RHEEM CREEK WATERSHED
CREEK ENHANCEMENT
NOVEMBER 30, 2022
90% PLAN SET
---- ----
----
---- ----
---- ----
1" = 20'-0"
ES, MT
ES, MT, NQ
ES, MT, NQ
SHEET
SCALE
DATE
DRAWN BY
DESIGN BY
CHECKED BY
Restoration Design Group, Inc.
2332 Fifth Street, Suite C
Berkeley, CA 94710
T 510.644.2798 F 510.644.2799
www.restorationdesigngroup.com
RENEWAL DATE
DATE
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#5536 SIGNATURE
DESCRIPTION
REVISIONS
DATEPROJECT TITLE
SHEET TITLEDESIGN PHASE
----
MATCHLINE STATION SHEET24+50 L-1.3
Feet
02040
MOYERS RD
GREENWOOD DR
24+00
25+00
26+00
27+00
28+00
29+00
PP UTILITY POLE PP UTILITY POLE
PP GUY WIRE
PP UTILITY POLE
PP (E) WALL CLEAR AND GRUB
ENTIRE L.O.W.
AREA, UON. SEE
DEMOLITION
NOTES, SHEET L-1.1
PP 10" SS. SEE
DEMOLITION NOTES,
SHEET L-1.1
PP SS MANHOLE.
SEE DEMOLITION
NOTES, SHEET L-1.1
DEMOLITION
L-1.3
C:\USERS\NAT\RESTORATION DESIGN GROUP\PROJECTS - DOCUMENTS\RHEEM CREEK ECOLOGICAL SOLUTIONS\04 AUTOCAD\WORKING DRAWINGS\SHEETS\RCES-LS-DEMO.DWG PLOTTED ON: 12/2/2022
FLOOD RISK REDUCTION IN THE RHEEM CREEK WATERSHED
CREEK ENHANCEMENT
NOVEMBER 30, 2022
90% PLAN SET
---- ----
---- ----
---- ----
1" = 20'-0"
ES, MT
ES, MT, NQ
ES, MT, NQ
SHEET
SCALE
DATE
DRAWN BY
DESIGN BY
CHECKED BY
Restoration Design Group, Inc.
2332 Fifth Street, Suite C
Berkeley, CA 94710
T 510.644.2798 F 510.644.2799
www.restorationdesigngroup.com
RENEWAL DATE
DATE
L I CENSED LANDSCAPE
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#5536 SIGNATURE
DESCRIPTION
REVISIONS
DATEPROJECT TITLE
SHEET TITLEDESIGN PHASE
----
Feet
02040
MATCHLINE STATION
SHEET
24+50
L-1.2
MATCHLINE STATION SHEET29+50 L-1.4
ANNAPOLIS AVE
34+94
30+00
31+00
32+00
33+00
34+00
GREENWOOD DR
RELOCATE GUY WIRE
PP UTILITY POLE
PP UTILITY POLE PP UTILITY POLE
PP FENCEREMOVE EXISTING 4-FT
CHAIN LINK FENCE AS
REQUIRED TO INSTALL
NEW SD PIPE
REMOVE FENCE
REMOVE EXISTING DI
SAWCUT AND REMOVE
PAVEMENT, SIDEWALK,
AND CURB & GUTTER AS
DIRECTED BY O.R.
PP 10" SS. SEE
DEMOLITION NOTES,
SHEET L-1.1
CLEAR AND GRUB
ENTIRE L.O.W.
AREA, UON. SEE
DEMOLITION
NOTES, SHEET L-1.1
REMOVE 110 LF
12" CONC SD PIPE
PP SS MANHOLE.
SEE DEMOLITION
NOTES, SHEET L-1.1
REMOVE FENCE AND GATE
TO EDGE OF NEIGHBORING
FENCES. EXTENT OF
REMOVAL SHALL BE
REFINED PER O.R.
DIRECTION FOLLOWING
VEGETATION REMOVAL AT
NO COST TO OWNER.
PP FENCE AND
GATE
DEMOLITION
L-1.4
C:\USERS\NAT\RESTORATION DESIGN GROUP\PROJECTS - DOCUMENTS\RHEEM CREEK ECOLOGICAL SOLUTIONS\04 AUTOCAD\WORKING DRAWINGS\SHEETS\RCES-LS-DEMO.DWG PLOTTED ON: 12/2/2022
FLOOD RISK REDUCTION IN THE RHEEM CREEK WATERSHED
CREEK ENHANCEMENT
NOVEMBER 30, 2022
90% PLAN SET
---- ----
---- ----
---- ----
1" = 20'-0"
ES, MT
ES, MT, NQ
ES, MT, NQ
SHEET
SCALE
DATE
DRAWN BY
DESIGN BY
CHECKED BY
Restoration Design Group, Inc.
2332 Fifth Street, Suite C
Berkeley, CA 94710
T 510.644.2798 F 510.644.2799
www.restorationdesigngroup.com
RENEWAL DATE
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#5536 SIGNATURE
DESCRIPTION
REVISIONS
DATEPROJECT TITLE
SHEET TITLEDESIGN PHASE
----
Feet
02040
MATCHLINE STATION SHEET29+50 L-1.3
1. SEE SECTIONS FOR ADDITIONAL GRADING
INFORMATION.
2. CONTRACTOR RESPONSIBLE FOR PROVIDING
A STAKED SURVEY BY A LICENSED
SURVEYOR OF THE FINAL AS-BUILT GRADING
FOR O.R. REVIEW AND APPROVAL. SEE
SPECIFICATIONS FOR REQUIREMENTS.
3. SEE SPECIFICATIONS FOR SOIL
PREPARATION REQUIRED PRIOR TO
PLANTING.
4. CONTRACTOR IS RESPONSIBLE FOR
IMPLEMENTATION AND MAINTENANCE OF ALL
BMP'S DEFINED IN THE SWPPP.
5. WHERE EXCAVATION IS REQUIRED ADJACENT
TO (E) UTILITIES, HAND EXCAVATE TO VERIFY
CONDITION AND LOCATION.
6. GRADING IS INTENDED TO BE IMPLEMENTED
WITH SMOOTH, EVEN SLOPES AND
CONTOURS. NO ABRUPT CHANGES SHALL BE
ALLOWED.
7. SEE SURVEY FOR VERTICAL DATUM.
GRADING NOTES
1. SHEET MULCH ALL AREAS DISTURBED DURING CONSTRUCTION. SEE PLANS FOR LAYOUT OF SHEET MULCH.
2. SEE SPECS FOR MULCHING REQUIREMENTS.
EROSION CONTROL NOTES
1. PROVIDE SHOP DRAWINGS AND AS-BUILTS
AS NOTED IN SPECIFICATIONS.
2. DIMENSIONS AS SHOWN ARE TO BE
VERIFIED WITH THE O.R. PRIOR TO
INSTALLING THE IMPROVEMENTS. IF MINOR
FIELD ADJUSTMENTS ARE REQUIRED, THEY
SHALL BE COMPLETED BY THE
CONTRACTOR AT NO COST TO THE OWNER.
LAYOUT NOTES
PROPERTY BOUNDARY
(E) MAJOR CONTOUR (5-FT)
(E) MINOR CONTOUR (1-FT)
MAJOR CONTOUR (5-FT)
MINOR CONTOUR (1-FT)
LIMIT OF GRADING
MATCH LINE
GUARDRAIL
CHAINLINK FENCE
LAYOUT AND GRADING LEGEND
12 (E) GRADE
FINISH GRADE
SHEET MULCH
PERMANENT FIBER ROLL
ENTRENCHED PER SE-5 CASQA
BMP HANDBOOK
1 2
VARIES
±2'-7'
1.5 1
3 VARIES
±2'-5'
4 4
3 L-5.0
2 1
1 6"
SECTIONPLAN 2 1/2"
CL
GUARDRAIL POST: 1-1/2" X 1" X 3/16"
FIELD WELD TO BASE PLATE.
NOTE: ALL JOINTS SHALL BE FULLY
WELDED AND GROUND SMOOTH
BASE PLATE: 3/8" THICK, 3-1/2"
SQUARE EMBEDDED STEEL PLATE
WITH ANCHORS. HOLD TOP OF
PLATE FLUSH WITH PAVING
(4) 3/4" X 6-1/4" ANCHORS. PREDRILL
HOLES WITH A HAMMER DRILL AND 3/4"
DRILL-BIT.
2 1/2"
2 1
2 6"
CL
2 6"
3 3
3 1
2 TOP AND BOTTOM RAIL AND
VERTICAL POST MEMBERS:
STRUCTURAL TUBING: 1-1/2" X 1" X
3/16". ALL JOINTS SHALL BE
WELDED AND GROUND SMOOTH.
SEE ENLARGEMENT FOR RADIUS
BEND IN GUARDRAIL
VERTICAL PICKETS: 1/2" X 1/2"
SOLID SQUARE STEEL. WELD ALL
AROUND AT TOP AND BOTTOM
GUARDRAIL CONNECTION
HEADWALL
SPACE POSTS AT 4'-6" O.C., UON.
HOLD TOP OF GUARDRAIL LEVEL
MAX. 4" OPENING
BETWEEN VERTICALS
42" MIN.
NOTE:
GUARDRAIL SHALL BE HOT DIP
GALVANIZED AFTER
FABRICATION. TOUCH UP FIELD
WELDS PER SPECIFICATIONS. ELEVATIONSECTION
4" MAX.
1-1/2" 1"
2 3
4 5
5 1
1 1
3 2
1 L-2.0
3 CLCL
44 3
1 LAYOUT & GRADING
L-2.0
C:\USERS\NAT\RESTORATION DESIGN GROUP\PROJECTS - DOCUMENTS\RHEEM CREEK ECOLOGICAL SOLUTIONS\04 AUTOCAD\WORKING DRAWINGS\SHEETS\RCES-LS-LAYT.DWG PLOTTED ON: 12/2/2022
FLOOD RISK REDUCTION IN THE RHEEM CREEK WATERSHED
CREEK ENHANCEMENT
NOVEMBER 30, 2022
90% PLAN SET
---- ----
---- ----
---- ----
1" = 20'-0"
ES, MT
ES, MT, NQ
ES, MT, NQ
SHEET
SCALE
DATE
DRAWN BY
DESIGN BY
CHECKED BY
Restoration Design Group, Inc.
2332 Fifth Street, Suite C
Berkeley, CA 94710
T 510.644.2798 F 510.644.2799
www.restorationdesigngroup.com
RENEWAL DATE
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#5536 SIGNATURE
DESCRIPTION
REVISIONS
DATEPROJECT TITLE
SHEET TITLEDESIGN PHASE
----
SCALE:NTS 1TYPICAL SECTION
SCALE:NTS 3GUARDRAIL CONNECTION
SCALE:NTS 2GUARDRAIL
INSTALL CALTRANS
G1 DRAINAGE INLET
RIM = 65.70
RESTORE PAVEMENT,
CURB & GUTTER, SEE
DETAIL ON THIS SHEET.
INSTALL 89-LF OF 24-IN
HDPE STORM DRAIN
INLET IE = 61.70
OUTLET IE = 59.69
BUILD UP VOID IN LEFT BANK AND
CONSTRUCT OUTFALL PROTECTION,
SEE DETAIL ON THIS SHEET.
CONFORM TO (E) GRADES
CONSTRUCT CEMENT CONCRETE TYPE S1-6 CURB
AND GUTTER PER CONTRA COSTA COUNTY
STANDARD PLAN CA71.
RESTORE PAVEMENT WITH NEW HMA TO MATCH (E)
AC DEPTH OR 6-IN MIN, WHICHEVER IS GREATER,
5'-0" MIN FROM EDGE OF NEW GUTTER.
SAWCUT (E) AC TO A NEAT STRAIGHT LINE 2'-0" MIN
FROM EDGE OF NEW GUTTER. RE-CUT ANY EDGES
DAMAGED DURING CONSTRUCTION. SEAL SURFACE
OF JOINT WITH TACK MATERIAL AND COVER WITH
SAND.
PLACE 4" MIN CLASS 2 AB COMPACTED TO 95%
RELATIVE COMPACTION.
COMPACT SUBGRADE TO 95% RELATIVE
COMPACTION.
PAINT BINDER (TACK COAT) TO ALL VERTICAL
SURFACES PRIOR TO PLACEMENT OF NEW HMA PER
SECTION 39-2.01C(3)(f) OF THE 2018 CALTRANS
STANDARD SPECIFICATIONS.
CONSTRUCT SIDEWALK PER CONTRA COSTA
COUNTY STANDARD PLAN CA70 WHERE SHOW ON
PLANS.
1 5'-0" MIN
1 3
22 3
4 5
6 5
6 NOTES:
1. CEMENT CONCRETE CURB AND GUTTER, MUST MEET
REQUIREMENTS IN CONTRA COSTA COUNTY STANDARD
PLAN CA70 AND SECTION 73 OF THE 2018 CALTRANS
STANDARD SPECIFICATIONS.
2. HMA MUST MEET THE REQUIREMENTS IN SECTION 39-2.07 OF THE 2018 CALTRANS STANDARD SPECIFICATIONS.
3. CLASS 2 AB MUST MEET REQUIREMENTS IN SECTION 26 FOR
3/4-IN MAXIMUM OF THE 2018 CALTRANS STANDARD
SPECIFICATIONS.
4 TOP FACE OF CURB (TFC)
7 7
1.5 1
PLACE 18-IN THICK LAYER OF CLASS 1
RSP WITH 6-IN OF CLASS 2 PERM
UNDERNEATH.
PRESERVE (E) TOE LOCATION.
PROPOSED 24-IN HDPE SD PIPE.
EXTEND RSP INTO CHANNEL AND 2-FT
UP OPPOSITE BANK.
CHANNEL INVERT.
BUILD UP VOID IN LEFT BANK AT
GREENWOOD CT OUTFALL WITH
SUITABLE NATIVE MATERIAL.
EXISTING SUBGRADE.
MATCH (E) SLOPE.
1 2
3 65
4 5
4 6
4'-6"
MIN
2'-0"
1'-0"
7 8
1 2
3 78
LAYOUT & GRADING
L-2.1
C:\USERS\NAT\RESTORATION DESIGN GROUP\PROJECTS - DOCUMENTS\RHEEM CREEK ECOLOGICAL SOLUTIONS\04 AUTOCAD\WORKING DRAWINGS\SHEETS\RCES-LS-LAYT.DWG PLOTTED ON: 12/2/2022
FLOOD RISK REDUCTION IN THE RHEEM CREEK WATERSHED
CREEK ENHANCEMENT
NOVEMBER 30, 2022
90% PLAN SET
---- ----
---- ----
---- ----
1" = 10'-0"
ES, MT
ES, MT, NQ
ES, MT, NQ
SHEET
SCALE
DATE
DRAWN BY
DESIGN BY
CHECKED BY
Restoration Design Group, Inc.
2332 Fifth Street, Suite C
Berkeley, CA 94710
T 510.644.2798 F 510.644.2799
www.restorationdesigngroup.com
RENEWAL DATE
DATE
L I CENSED LANDSCAPE
ARCHITECT
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#5536 SIGNATURE
DESCRIPTION
REVISIONS
DATEPROJECT TITLE
SHEET TITLEDESIGN PHASE
----
NOTE:
SEE NCE SHEETS FOR GRADING
AND FINISHED ELEVATIONS FOR
TIE-IN AT THIS LOCATION20 10 0
FT
SCALE:NTS 2CURB AND GUTTER AND SIDEWALK
SCALE:NTS 1OUTFALL PROTECTION
Elevation
Station
Profile View of Rheem Creek Centerline
50 60
70 80
90 100
50 60
70 80
90 100
20+0021+0022+0022+50
0.7%
CONFORMCONFORM
FORDHAM ST
20+0021+0022+0023+0024+00
GREENWOOD DR
LIMIT OF GRADING, TYP.
RE-GRADE (E) CHANNEL
SEE SECTIONS, SHEETS C-2.4-C2.6
GUARDRAILL-2.0
2 CONCRETE
PAVERS NEW CHAINLINK FENCE
LAYOUT & GRADING
L-2.2
C:\USERS\NAT\RESTORATION DESIGN GROUP\PROJECTS - DOCUMENTS\RHEEM CREEK ECOLOGICAL SOLUTIONS\04 AUTOCAD\WORKING DRAWINGS\SHEETS\RCES-LS-LAYT.DWG PLOTTED ON: 12/2/2022
FLOOD RISK REDUCTION IN THE RHEEM CREEK WATERSHED
CREEK ENHANCEMENT
NOVEMBER 30, 2022
90% PLAN SET
---- ----
---- ----
---- ----
1" = 20'-0"
ES, MT
ES, MT, NQ
ES, MT, NQ
SHEET
SCALE
DATE
DRAWN BY
DESIGN BY
CHECKED BY
Restoration Design Group, Inc.
2332 Fifth Street, Suite C
Berkeley, CA 94710
T 510.644.2798 F 510.644.2799
www.restorationdesigngroup.com
RENEWAL DATE
DATE
L I CENSED LANDSCAPE
ARCHITECT
STATE
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#5536 SIGNATURE
DESCRIPTION
REVISIONS
DATEPROJECT TITLE
SHEET TITLEDESIGN PHASE
----
FT
02040
MATCHLINE STATION SHEET24+50 L-2.3
Elevation
Station
Profile View of Rheem Creek Centerline
50 60
70 80
90 100
50 60
70 80
90 100
25+0026+0027+0028+0029+0029+50
0.8%
CONFORM
MOYERS RD
GREENWOOD DR
24+00
25+00
26+00
27+00
28+00
29+00
LIMIT OF GRADING, TYP.
RE-GRADE (E) CHANNEL
SEE SECTIONS, SHEETS C-2.4-C2.6
LAYOUT & GRADING
L-2.3
C:\USERS\NAT\RESTORATION DESIGN GROUP\PROJECTS - DOCUMENTS\RHEEM CREEK ECOLOGICAL SOLUTIONS\04 AUTOCAD\WORKING DRAWINGS\SHEETS\RCES-LS-LAYT.DWG PLOTTED ON: 12/2/2022
FLOOD RISK REDUCTION IN THE RHEEM CREEK WATERSHED
CREEK ENHANCEMENT
NOVEMBER 30, 2022
90% PLAN SET
---- ----
---- ----
---- ----
1" = 20'-0"
ES, MT
ES, MT, NQ
ES, MT, NQ
SHEET
SCALE
DATE
DRAWN BY
DESIGN BY
CHECKED BY
Restoration Design Group, Inc.
2332 Fifth Street, Suite C
Berkeley, CA 94710
T 510.644.2798 F 510.644.2799
www.restorationdesigngroup.com
RENEWAL DATE
DATE
L I CENSED LANDSCAPE
ARCHITECT
STATE
O
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E R I K ST
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#5536 SIGNATURE
DESCRIPTION
REVISIONS
DATEPROJECT TITLE
SHEET TITLEDESIGN PHASE
----
FT
02040
MATCHLINE STATION
SHEET
24+50
L-2.2
MATCHLINE STATION SHEET29+50 L-2.4
Station
Profile View of Rheem Creek Centerline
50 60
70 80
90 100
50 60
70 80
90 100
29+5030+0031+0032+0033+0034+0034+75
0.8%
0.8%
TIE INTO (E)
CULVERT
INVERT
ANNAPOLIS AVE
34+94
30+00
31+00
32+00
33+00
34+00
GREENWOOD DR
FG 77.1FG 77.5
FG 78.0
RESTORE PAVEMENT,
SIDEWALK, AND CURB &
GUTTER, SEE DETAIL ON
SHEET L-2.2
INSTALL CALTRANS G1
DRAINAGE INLET
RIM=80.10
INSTALL 12" HDPE STORM DRAIN
INLET IE = 78.10
OUTLET IE = 77.50
CONSTRUCT OUTFALL
PROTECTION, SEE DETAIL ON
SHEET L-2.2
LIMIT OF GRADING, TYP.
RE-GRADE (E) CHANNEL
SEE CROSS SECTIONS, SHEETS C-3.0 - C-3.2
GUARDRAILL-2.0
2 NEW CHAINLINK FENCENEW CHAINLINK FENCE
PATCH FENCE
LAYOUT & GRADING
L-2.4
C:\USERS\NAT\RESTORATION DESIGN GROUP\PROJECTS - DOCUMENTS\RHEEM CREEK ECOLOGICAL SOLUTIONS\04 AUTOCAD\WORKING DRAWINGS\SHEETS\RCES-LS-LAYT.DWG PLOTTED ON: 12/2/2022
FLOOD RISK REDUCTION IN THE RHEEM CREEK WATERSHED
CREEK ENHANCEMENT
NOVEMBER 30, 2022
90% PLAN SET
---- ----
---- ----
---- ----
1" = 20'-0"
ES, MT
ES, MT, NQ
ES, MT, NQ
SHEET
SCALE
DATE
DRAWN BY
DESIGN BY
CHECKED BY
Restoration Design Group, Inc.
2332 Fifth Street, Suite C
Berkeley, CA 94710
T 510.644.2798 F 510.644.2799
www.restorationdesigngroup.com
RENEWAL DATE
DATE
L I CENSED LANDSCAPE
ARCHITECT
STATE
O
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E R I K ST
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#5536 SIGNATURE
DESCRIPTION
REVISIONS
DATEPROJECT TITLE
SHEET TITLEDESIGN PHASE
----
FT
02040
MATCHLINE STATION SHEET29+50 L-2.3
ELEVATION
OFFSET
20+00
60 65
70 75
80 85
90 60
65 70
75 80
85 90
0 10 20 300-10-20-30
ELEVATION
OFFSET
25+50
65 70
75 80
85 90
95 65
70 75
80 85
90 95
0 10 20 300-10-20-30
ELEVATION
OFFSET
22+50
65 70
75 80
85 90
95 65
70 75
80 85
90 95
0 10 20 300-10-20-30
ELEVATION
OFFSET
24+00
60 65
70 75
80 85
90 95
60 65
70 75
80 85
90 95
0 10 20 300-10-20-30
ELEVATION
OFFSET
23+50
60 65
70 75
80 85
90 95
60 65
70 75
80 85
90 95
0 10 20 300-10-20-30
ELEVATION
OFFSET
19+50
60 65
70 75
80 85
60 65
70 75
80 85
0 10 20 300-10-20-30
ELEVATION
OFFSET
20+50
60 65
70 75
80 85
90 60
65 70
75 80
85 90
0 10 20 300-10-20-30
ELEVATION
OFFSET
21+00
60 65
70 75
80 85
90 95
60 65
70 75
80 85
90 95
0 10 20 300-10-20-30
ELEVATION
OFFSET
21+50
60 65
70 75
80 85
90 95
60 65
70 75
80 85
90 95
0 10 20 300-10-20-30
ELEVATION
OFFSET
23+00
60 65
70 75
80 85
90 95
60 65
70 75
80 85
90 95
0 10 20 300-10-20-30
1.5:1
1.5:1
1.5:1
1.5:1
1.5:1
1.5:1
1.5:1
1.5:1
ELEVATION
OFFSET
24+50
65 70
75 80
85 90
95 65
70 75
80 85
90 95
0 10 20 300-10-20-30
ELEVATION
OFFSET
25+00
65 70
75 80
85 90
95 65
70 75
80 85
90 95
0 10 20 300-10-20-30
1.5:1
1.5:1
FENCE
OF=-12.14
OF=-2.70
EL=67.44
OF=1.18
EL=67.44
FENCE
OF=-13.75
OH POWER
OF=-5.59
OF=-3.22
EL=67.82
OF=0.59
EL=67.82
FENCE
OF=-11.43
OF=-0.31
EL=68.19
OF=2.46
EL=68.19
FENCE
OF=-8.71
OH POWER
OF=-4.72
WALL
OF=14.68
OF=-1.55
EL=68.56
OF=0.96
EL=68.56
FENCE
OF=-9.80
FENCE
OF=13.44
OH POWER
OF=-5.13WALL
OF=-7.46
FENCE
OF=15.22
FENCE
OF=-14.53
OH POWER
OF=-5.90
WALL
OF=14.73
FENCE
OF=17.18
FENCE
OF=-17.44
FENCE
OF=14.23
FENCE
OF=-21.27
FENCE
OF=15.41
FENCE
OF=-27.06
OF=-0.60
EL=71.35
OF=4.73
EL=71.35
FENCE
OF=14.24
FENCE
OF=-32.30
OH POWER
OF=-19.47
OH POWER
OF=-5.13
OH POWER
OF=-4.43
OH POWER
OF=-5.52
OH POWER
OF=-6.29
OH POWER
OF=-6.67
OH POWER
OF=-23.68
Feet
01020
CROSS SECTIONS
L-3.0
C:\USERS\NAT\RESTORATION DESIGN GROUP\PROJECTS - DOCUMENTS\RHEEM CREEK ECOLOGICAL SOLUTIONS\04 AUTOCAD\WORKING DRAWINGS\SHEETS\RCES-LS-SECT.DWG PLOTTED ON: 12/2/2022
FLOOD RISK REDUCTION IN THE RHEEM CREEK WATERSHED
CREEK ENHANCEMENT
NOVEMBER 30, 2022
90% PLAN SET
---- ----
---- ----
---- ----
1" = 20'-0"
ES, MT
ES, MT, NQ
ES, MT, NQ
SHEET
SCALE
DATE
DRAWN BY
DESIGN BY
CHECKED BY
Restoration Design Group, Inc.
2332 Fifth Street, Suite C
Berkeley, CA 94710
T 510.644.2798 F 510.644.2799
www.restorationdesigngroup.com
RENEWAL DATE
DATE
L I CENSED LANDSCAPE
ARCHITECT
STATE
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#5536 SIGNATURE
DESCRIPTION
REVISIONS
DATEPROJECT TITLE
SHEET TITLEDESIGN PHASE
----
ELEVATION
OFFSET
26+00
65 70
75 80
85 90
95 65
70 75
80 85
90 95
0 10 20 300-10-20-30
ELEVATION
OFFSET
26+50
65 70
75 80
85 90
95 65
70 75
80 85
90 95
0 10 20 300-10-20-30
ELEVATION
OFFSET
29+00
65 70
75 80
85 90
95 100
65 70
75 80
85 90
95 100
0 10 20 300-10-20-30
ELEVATION
OFFSET
31+00
70 75
80 85
90 95
100
70 75
80 85
90 95
100
0 10 20 300-10-20-30
ELEVATION
OFFSET
31+50
70 75
80 85
90 95
100
70 75
80 85
90 95
100
0 10 20 300-10-20-30
ELEVATION
OFFSET
27+00
65 70
75 80
85 90
95 100
65 70
75 80
85 90
95 100
0 10 20 300-10-20-30
ELEVATION
OFFSET
27+50
65 70
75 80
85 90
95 100
65 70
75 80
85 90
95 100
0 10 20 300-10-20-30
ELEVATION
OFFSET
28+00
65 70
75 80
85 90
95 100
65 70
75 80
85 90
95 100
0 10 20 300-10-20-30
ELEVATION
OFFSET
28+50
65 70
75 80
85 90
95 100
65 70
75 80
85 90
95 100
0 10 20 300-10-20-30
1.5:1
1.5:1
ELEVATION
OFFSET
29+50
65 70
75 80
85 90
95 100
65 70
75 80
85 90
95 100
0 10 20 300-10-20-30
1.5:1
1.5:11.5:1
1.5:1
ELEVATION
OFFSET
30+00
65 70
75 80
85 90
95 100
65 70
75 80
85 90
95 100
0 10 20 300-10-20-30
1.5:1
1.5:1
ELEVATION
OFFSET
30+50
70 75
80 85
90 95
100
70 75
80 85
90 95
100
0 10 20 300-10-20-30
1.5:1
1.5:1
1.5:1
1.5:11.5:1
1.5:1
1.5:1
1.5:1
1.5:1
1.5:11.5:1
1.5:1
1.5:1
1.5:1
1.5:1
1.5:1
OF=-2.14
EL=71.75
OF=0.44
EL=71.75
WALL
OF=14.12
FENCE
OF=-29.88 OH POWER
OF=-13.60
OF=-0.41
EL=72.16
OF=1.73
EL=72.16
WALL
OF=13.68
FENCE
OF=-30.82 OH POWER
OF=-10.15
OF=-2.28
EL=72.56
OF=0.99
EL=72.56
WALL
OF=12.95
FENCE
OF=-28.75 OH POWER
OF=-10.17
OF=-0.48
EL=72.97
OF=2.45
EL=72.97
WALL
OF=12.68
FENCE
OF=-29.48 OH POWER
OF=-10.18
OF=-0.19
EL=73.37
OF=1.32
EL=73.37
WALL
OF=12.62
FENCE
OF=-24.00
OH POWER
OF=-10.20
OF=-0.11
EL=73.77
OF=3.03
EL=73.77
WALL
OF=12.20
FENCE
OF=-24.90
OH POWER
OF=-10.21
OF=-1.72
EL=74.18
OF=1.96
EL=74.18
WALL
OF=12.06
WALL
OF=-23.50
OH POWER
OF=-10.27
OF=-2.44
EL=74.58
OF=0.40
EL=74.58
WALL
OF=11.48
WALL
OF=-22.92
OH POWER
OF=-10.34
OF=-0.88
EL=74.99
OF=1.89
EL=74.99
WALL
OF=10.68
WALL
OF=-24.89
OH POWER
OF=-10.40
OF=-1.01
EL=75.39
OF=1.77
EL=75.39
WALL
OF=11.21
WALL
OF=-15.60
OH POWER
OF=-10.44
OF=-2.76
EL=75.80
OF=0.39
EL=75.80
WALL
OF=-21.63
OH POWER
OF=-10.47
FENCE
OF=10.54
OF=-1.99
EL=76.20
OF=2.55
EL=76.20
FENCE
OF=-21.30
OH POWER
OF=-9.55
FENCE
OF=12.51
Feet
01020
CROSS SECTIONS
L-3.1
C:\USERS\NAT\RESTORATION DESIGN GROUP\PROJECTS - DOCUMENTS\RHEEM CREEK ECOLOGICAL SOLUTIONS\04 AUTOCAD\WORKING DRAWINGS\SHEETS\RCES-LS-SECT.DWG PLOTTED ON: 12/2/2022
FLOOD RISK REDUCTION IN THE RHEEM CREEK WATERSHED
CREEK ENHANCEMENT
NOVEMBER 30, 2022
90% PLAN SET
---- ----
---- ----
---- ----
1" = 20'-0"
ES, MT
ES, MT, NQ
ES, MT, NQ
SHEET
SCALE
DATE
DRAWN BY
DESIGN BY
CHECKED BY
Restoration Design Group, Inc.
2332 Fifth Street, Suite C
Berkeley, CA 94710
T 510.644.2798 F 510.644.2799
www.restorationdesigngroup.com
RENEWAL DATE
DATE
L I CENSED LANDSCAPE
ARCHITECT
STATE
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#5536 SIGNATURE
DESCRIPTION
REVISIONS
DATEPROJECT TITLE
SHEET TITLEDESIGN PHASE
----
ELEVATION
OFFSET
32+00
70 75
80 85
90 95
100
70 75
80 85
90 95
100
0 10 20 300-10-20-30
ELEVATION
OFFSET
33+50
70 75
80 85
90 95
100
70 75
80 85
90 95
100
0 10 20 300-10-20-30
ELEVATION
OFFSET
32+50
70 75
80 85
90 95
100
70 75
80 85
90 95
100
0 10 20 300-10-20-30
ELEVATION
OFFSET
33+00
70 75
80 85
90 95
100
70 75
80 85
90 95
100
0 10 20 300-10-20-30
ELEVATION
OFFSET
34+00
70 75
80 85
90 95
100
70 75
80 85
90 95
100
0 10 20 300-10-20-30
1.5:1
1.5:1
1.5:1
1.5:11.5:1
1.5:1
1.5:1
1.5:1
1.5:1
1.5:1
OF=-3.86
EL=76.61
OF=0.51
EL=76.61
FENCE
OF=10.92
FENCE
OF=-22.51
OH POWER
OF=-5.20
OF=-1.93
EL=77.01
OF=1.53
EL=77.01
FENCE
OF=10.63
FENCE
OF=-19.81
OF=-0.53
EL=77.42
OF=1.85
EL=77.42
FENCE
OF=-18.43
OF=-2.36
EL=77.82
OF=0.81
EL=77.82
FENCE
OF=10.49
FENCE
OF=-15.01
OH POWER
OF=6.21
OF=-1.56
EL=78.23
OF=1.76
EL=78.23
FENCE
OF=9.69
FENCE
OF=-15.93
OH POWER
OF=-0.85
OH POWER
OF=3.51
OH POWER
OF=7.82
Feet
01020
CROSS SECTIONS
L-3.2
C:\USERS\NAT\RESTORATION DESIGN GROUP\PROJECTS - DOCUMENTS\RHEEM CREEK ECOLOGICAL SOLUTIONS\04 AUTOCAD\WORKING DRAWINGS\SHEETS\RCES-LS-SECT.DWG PLOTTED ON: 12/2/2022
FLOOD RISK REDUCTION IN THE RHEEM CREEK WATERSHED
CREEK ENHANCEMENT
NOVEMBER 30, 2022
90% PLAN SET
---- ----
---- ----
---- ----
1" = 20'-0"
ES, MT
ES, MT, NQ
ES, MT, NQ
SHEET
SCALE
DATE
DRAWN BY
DESIGN BY
CHECKED BY
Restoration Design Group, Inc.
2332 Fifth Street, Suite C
Berkeley, CA 94710
T 510.644.2798 F 510.644.2799
www.restorationdesigngroup.com
RENEWAL DATE
DATE
L I CENSED LANDSCAPE
ARCHITECT
STATE
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#5536 SIGNATURE
DESCRIPTION
REVISIONS
DATEPROJECT TITLE
SHEET TITLEDESIGN PHASE
----
REVEGETATION LEGEND
PROPERTY BOUNDARY
EASEMENT
LIMIT OF WORK (L.O.W.)
MAJOR CONTOUR
MINOR CONTOUR
FIBER ROLL
GUARDRAIL
NEW CHAINLINK FENCE
PATCH TYPEBOTANICAL NAME SCIENTIFIC NAME S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17 S18 S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 S30 S31 S32 S33 S34 S35 TOTALS STREAM EDGEPATCH AREA (SF)32 53 42 58 49 46 91 60 105 54 63 68 96 43 57 87 81 71 83 101 81 66 64 80 68 46 83 73 49 58 56 107 71 149 70 2461 BACCHARIS DOUGLASII MARSH BACCHARIS 1 1 1 1 2 1 2 3 5 2 2 2 4 2 3 4 3 2 2 4 3 1 1 3 1 2 3 1 2 3 2 3 2 4 3 81 RUBUS URSANUS PACIFIC BLACKBERRY 1 2 2 2 1 1 5 2 6 2 2 2 4 3 2 2 4 1 3 4 3 1 1 2 2 2 2 1 2 2 2 5 3 5 2 86 ROSA CALIFORNICA CA WILD ROSE 1 2 1 1 2 2 3 1 5 1 2 3 4 2 3 4 3 2 2 4 3 3 3 3 1 2 3 1 2 2 2 3 2 4 3 85 TOTAL PLANTS PER PATCH 3 5 4 4 5 4 10 6 16 5 6 7 12 7 8 10 10 5 7 12 9 5 5 8 4 6 8 3 6 7 6 11 7 13 8 252 PATCH TYPE BOTANICAL NAME SCIENTIFIC NAME R1R2R3 R4 R5 R6 R7 R8 R9 R10 R11R12R13 R14 R15 R16 R17 R18 R19 R20R21 R22R23R24R25 R26R27R28 R29 R30 R31TOTALS RIPARIANPATCH AREA (SF)4245 80 49 94 69 99 135 187 91 101 141 79 59 50 78 87 80 53 46 82 59 49 50 67 25 44 33 53 79 552261 CAREX BARBARAE VALLEY SEDGE 12 21 423 3 6 3 4 4 32 23 4 3 32 2 21212 2 21 3 176 JUNCUS EFFUSUS SOFT RUSH212 232 23 424 4 3 4 324 32121 12 2 212 23 374 JUNCUS PATENS COMMON RUSH 1 1 3 2 2 1 3 4 4 3 4 4 3 4 4 1 4 3 2 1 2 2 2 2 2 2 1 2 2 3 276 TOTAL PLANTS PER PATCH 4 4 7 5 9 5 8 10 14 8 12 12 9 10 9 6 12 9 7 4 6 5 4 6 5 6 4 6 5 9 6226
REVEGETATION & IRRIGATION NOTES
1. PLANTS SHALL BE WATERED BY HAND DURING THE PLANT
ESTABLISHMENT PERIOD.
2. INSTALL TREES AND SHRUBS PER DETAIL 2/L-5.0.
3. INSTALL PATCHES PER DETAIL 4/L-5.0.
4. INSTALL WILLOW POLES PER DETAIL 5/L-5.0.
5. RESTORATION GRADE NATIVE PLANTS SHALL BE SOURCED WITHIN 20 MILES OF THE PROJECT SITE. CULTIVARS OF NATIVE SPECIES WILL NOT BE ACCEPTED. COUNTY OF ORIGIN FOR EACH PLANT SHALL BE NOTED IN SUBMITTAL.
6. TREES/SHRUBS AND PLANT CLUSTERS SHALL BE UNEVENLY SPACED UNLESS OTHERWISE DIRECTED BY O.R. IN THE FIELD.
7. SHEET MULCH DISTURBED BARE AREAS PER DETAIL 6/L-5.0, SEE SPECS.
8. CONTRACTOR TO REMOVE INVASIVE SPECIES AND ENSURE PATCH
PLANTING AREAS ARE WEED-FREE PRIOR TO PLANTING
SYMBOLBOTANICAL NAMECOMMON NAMECONTAINER SIZEQTY
ACER MACROPHYLLUMBIG LEAF MAPLE 15G 3
ACER NEGUNDOBOX ELDER 15G 4
AESCULUS CALIFORNICACALIFORNIA BUCKEYE 5G 33
ALNUS RHOMBIFOLIAWHITE ALDER D40 14
CERCIS OCCIDENTALISWESTERN REDBUD 5G 36
JUGLANS HINDSIIBLACK WALNUT 15G 3
POPULUS FREMONTIIFREMONT COTTONWOOD D40 16
QUERCUS AGRIFOLIALIVE OAK 15G 6
S. NIGRA V. CAERULEABLUE ELDERBERRY 5G 61
WILLOW CLUSTER QTY SALIX LASIOLEPISWILLOW POLES 9" - 2' O.C. 20
MULCH AREA (SF) SHEET MULCH 17,955
MULCH 425
TREE SCHEDULE
PLANT PATCH SCHEDULE
S1
R1
*NOTE: PLANTS WILL BE LOCATED BY O.R. PRIOR TO PLANTING.
REVEGETATION
L-4.0
C:\USERS\NAT\RESTORATION DESIGN GROUP\PROJECTS - DOCUMENTS\RHEEM CREEK ECOLOGICAL SOLUTIONS\04 AUTOCAD\WORKING DRAWINGS\SHEETS\RCES-LS-RVEG.DWG PLOTTED ON: 12/2/2022
FLOOD RISK REDUCTION IN THE RHEEM CREEK WATERSHED
CREEK ENHANCEMENT
NOVEMBER 30, 2022
90% PLAN SET
---- ----
----
---- ----
---- ----
1" = 20'-0"
ES, MT
ES, MT, NQ
ES, MT, NQ
SHEET
SCALE
DATE
DRAWN BY
DESIGN BY
CHECKED BY
Restoration Design Group, Inc.
2332 Fifth Street, Suite C
Berkeley, CA 94710
T 510.644.2798 F 510.644.2799
www.restorationdesigngroup.com
RENEWAL DATE
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#5536 SIGNATURE
DESCRIPTION
REVISIONS
DATEPROJECT TITLE
SHEET TITLEDESIGN PHASE
----
FORDHAM ST
19+0020+0021+0022+0023+0024+00
GREENWOOD DR
19+0020+0021+0022+0023+0024+00
S1
R1 S2
R2
S3
S5
R4
R3
S4
S6
PLACE MULCH ON THIS BANK.
NOT WIDE ENOUGH TO INSTALL
SHEETMULCH.
INSTALL SHEET MULCHL-5.0
6 PERMANENT FIBER ROLL
ENTRENCHED PER SE-5 CASQA
BMP HANDBOOK, TYP.
REVEGETATION
L-4.2
C:\USERS\NAT\RESTORATION DESIGN GROUP\PROJECTS - DOCUMENTS\RHEEM CREEK ECOLOGICAL SOLUTIONS\04 AUTOCAD\WORKING DRAWINGS\SHEETS\RCES-LS-RVEG.DWG PLOTTED ON: 12/2/2022
FLOOD RISK REDUCTION IN THE RHEEM CREEK WATERSHED
CREEK ENHANCEMENT
NOVEMBER 30, 2022
90% PLAN SET
---- ----
----
---- ----
---- ----
1" = 20'-0"
ES, MT
ES, MT, NQ
ES, MT, NQ
SHEET
SCALE
DATE
DRAWN BY
DESIGN BY
CHECKED BY
Restoration Design Group, Inc.
2332 Fifth Street, Suite C
Berkeley, CA 94710
T 510.644.2798 F 510.644.2799
www.restorationdesigngroup.com
RENEWAL DATE
DATE
L I CENSED LANDSCAPE
ARCHITECT
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#5536 SIGNATURE
DESCRIPTION
REVISIONS
DATEPROJECT TITLE
SHEET TITLEDESIGN PHASE
----
Feet
02040
MATCHLINE STATION SHEET24+50 L-4.3
MOYERS RD
GREENWOOD DR
24+00
25+00
26+00
27+00
28+00
29+00
24+00
25+00
26+00
27+00
28+00
29+00
R5
S7
S8
S9
S12
S13
S14
S15
S16
S17
S18
S19
R6
R7
R8
R9
R10
R11
R13 R12
R14
R15
R16
R17
S10
S11
TREE PLANTING, TYP.L-5.0
2+3
INSTALL RESTORATION PLANTS
AND PATCHES PER DETAILS,
TYP.
L-5.0
1+4
REVEGETATION
L-4.3
C:\USERS\NAT\RESTORATION DESIGN GROUP\PROJECTS - DOCUMENTS\RHEEM CREEK ECOLOGICAL SOLUTIONS\04 AUTOCAD\WORKING DRAWINGS\SHEETS\RCES-LS-RVEG.DWG PLOTTED ON: 12/2/2022
FLOOD RISK REDUCTION IN THE RHEEM CREEK WATERSHED
CREEK ENHANCEMENT
NOVEMBER 30, 2022
90% PLAN SET
---- ----
---- ----
---- ----
1" = 20'-0"
ES, MT
ES, MT, NQ
ES, MT, NQ
SHEET
SCALE
DATE
DRAWN BY
DESIGN BY
CHECKED BY
Restoration Design Group, Inc.
2332 Fifth Street, Suite C
Berkeley, CA 94710
T 510.644.2798 F 510.644.2799
www.restorationdesigngroup.com
RENEWAL DATE
DATE
L I CENSED LANDSCAPE
ARCHITECT
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#5536 SIGNATURE
DESCRIPTION
REVISIONS
DATEPROJECT TITLE
SHEET TITLEDESIGN PHASE
----
Feet
02040
MATCHLINE STATION
SHEET
24+50
L-4.2
MATCHLINE STATION SHEET29+50 L-4.4
ANNAPOLIS AVE
34+94
30+00
31+00
32+00
33+00
34+00
GREENWOOD DR
30+00
31+00
32+00
33+00
34+00
34+94
S20
S21
S23
S22
S29
S33
S31
S32
S30
S35
S34
S25
S26
S28
R18
R22
R20
R23
R24
R25
R31
R30
R26
R29
R27
S27
S24
R19
R21
R28
TREE PLANTING, TYP.L-5.0
2+3
INSTALL RESTORATION PLANTS
AND PATCHES PER DETAILS,
TYP.
L-5.0
1+4
INSTALL WILLOW CLUSTERL-5.0
5 REVEGETATION
L-4.4
C:\USERS\NAT\RESTORATION DESIGN GROUP\PROJECTS - DOCUMENTS\RHEEM CREEK ECOLOGICAL SOLUTIONS\04 AUTOCAD\WORKING DRAWINGS\SHEETS\RCES-LS-RVEG.DWG PLOTTED ON: 12/2/2022
FLOOD RISK REDUCTION IN THE RHEEM CREEK WATERSHED
CREEK ENHANCEMENT
NOVEMBER 30, 2022
90% PLAN SET
---- ----
---- ----
---- ----
1" = 20'-0"
ES, MT
ES, MT, NQ
ES, MT, NQ
SHEET
SCALE
DATE
DRAWN BY
DESIGN BY
CHECKED BY
Restoration Design Group, Inc.
2332 Fifth Street, Suite C
Berkeley, CA 94710
T 510.644.2798 F 510.644.2799
www.restorationdesigngroup.com
RENEWAL DATE
DATE
L I CENSED LANDSCAPE
ARCHITECT
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#5536 SIGNATURE
DESCRIPTION
REVISIONS
DATEPROJECT TITLE
SHEET TITLEDESIGN PHASE
----
Feet
02040
MATCHLINE STATION SHEET29+50 L-4.3
PLANT GROWN IN
RESTORATION CONTAINER
(SMALLER THAN 1 GALLON)
PLANTING PIT, EQUAL
DIAMETER TO CONTAINER.
USE DIBBLE OR HAND
SPADE. SET CROWN
ABOVE FINISH GRADE.
PINCH SOIL TIGHT
AGAINST ROOTS.
SHEET MULCH. SEE PLANS,
NOTES, AND DETAIL. CUT
SHEET MULCH PRIOR TO
PLANTING. KEEP MULCH
CLEAR OF CROWN.
SLOPED CONDITION - SET
PLANT PLUMB
1 2
3 4
14 3
2 L-5.0
6 LARGE CONTAINER TREE OR SHRUB ROOTBALL
(1 GALLON OR LARGER). SET CROWN 1-2" ABOVE
FINISHED GRADE
PIT DIAMETER, TWO TIMES THE ROOTBALL
DIAMETER. EXCAVATE PIT 2" SHALLOWER THAN
CONTAINER, DEEPER BEYOND ROOTBALL. PLACE
ROOTBALL ON CENTER MOUND AS SHOWN.
EDGE OF PIT, FRACTURE & SCARIFY.
PLANTING MIX SOIL, BACKFILLED. HAND
COMPACT IN 6" LIFTS. SEE PLANTING PLANS AND
NOTES FOR MIX INFORMATION.
WATERING BASIN LIP, 4" HEIGHT. DOWN SLOPE
EDGE ONLY IN SLOPED CONDITION; COMPLETE
PERIMETER IN LEVEL CONDITION
MULCH
CUT SHEET MULCH TO OUTER PERIMETER OF
WATERING BASIN
ORIGINAL GRADE, SLOPED CONDITION
FINISHED GRADE, SLOPED CONDITION
1 2
3 4
5 6
2 4
3 5
1 6
7 7
89 8
9 48" MAX.
10"
36" MIN.
2 3
4 LARGE CONTAINER TREE
(5 GALLON OR LARGER), SEE DETAIL
2/L-5.0 FOR PLANTING INSTRUCTIONS.
ARBORTIE TREE TIES (2), W/ 10" WIDE
LOOPS AROUND TRUNK. SECURE
ARBORTIES 4" MIN FROM TOP OF
STAKES. DIRECTION AND APPROVAL
OF INSTALLATION BY O.R.
TREE STAKES, SET VERTICAL OUTSIDE
ROOTBALL. KEEP TOP OF STAKES 6"
MIN CLEAR OF LIMBS. SET PARALLEL
TO CONCRETE BAND.
FINISH GRADE
MULCH
WATERING BASIN LIP6
5 4
3 2
1 56
1 NOTE:
SEE PLANTING PLANS FOR SOIL MIX
INFORMATION
1 2
SHEET MULCH
SMALL SHRUB / GRASS CLUSTER
1 2
10"MIN
NOTES:
A. PLANTS SHALL BE CLUSTERED RANDOMLY WITHIN PATCHES.
B. PLANT TYPE AND COUNT VARIES PER PATCH CODE, SEE REVEGETATION SCHEDULE, SHEET L-4.0.
C. WHEN 15G TREES OCCUR WITHIN PATCH BOUNDARIES, ALLOW 3'-0" O.C. BETWEEN TREE AND ANY PATCH PLANTING CONTAINERS.
D. WHEN 5G SHRUBS OCCUR WITHIN PATCH BOUNDARIES, ALLOW 24" O.C. BETWEEN SHRUB AND ANY PATCH PLANTING CONTAINERS.
E. CUT SHEET MULCH AROUND PLANT CLUSTERS.
±1/3
2/3
BELOW GRADE
WILLOW CUTTING
PILOT HOLE, DRILLED 1" DIAMETER
LARGER THAN POLE DIAMETER
FINISH GRADE, FABRIC OR SEEDING
NATIVE SOIL, VOID OF AIR POCKETS,
SEE SPECIFICATIONS
SUBGRADE
NOTE:
SET ALL POLES PERPENDICULAR TO
FINISH GRADE AND MINIMUM 2' APART.
INSTALL WITH IRREGULAR SPACING (TO
MIMIC NATURALISTIC OCCURRENCE).
3 1
4 2
3 1
5 4
5 2
HEAVYWEIGHT WEEDGUARD PAPER
OR CARDBOARD. LAY ON PREPARED
SURFACE
4" LAYER OF MULCH
FIBER ROLL
FINISHED GRADE
1 2
3 SHEETMULCH INSTALLATION NOTES:
1. CLEAR AND GRUB SITE, REMOVING INVASIVE PLANTS WITHIN PROJECT AREA.
2. GRADE SITE AND ACCORDING TO LAYOUT AND GRADING SHEETS
3. INSTALL FIBER ROLLS
4. PLACE HEAVYWEIGHT WEED PAPER ON PREPARED SITE, WET PAPER AS APPLIED TO KEEP IN PLACE AND SHAPE AROUND OBSTACLES. TUCK EDGES ADJACENT CREEK SNUG WITH FIBER ROLLS.
5. SPREAD 4" OF MULCH ON TOP, SEE LAYOUT SHEETS.
6. PLANT LARGE TREES (5G OR LARGER). SET ASIDE MULCH AND CUT PAPER TO DIAMETER OF WATERING BASIN. REPLACE MULCH AS TOP DRESSING.
7. INSTALL SMALLER PLANTS AND POLES. SET ASIDE MULCH AND CUT PAPER TO PLANT. REPLACE PAPER AS SUITABLE AND USE MULCH AS TOP DRESSING. 1 4
2 4 3
C:\USERS\NAT\RESTORATION DESIGN GROUP\PROJECTS - DOCUMENTS\RHEEM CREEK ECOLOGICAL SOLUTIONS\04 AUTOCAD\WORKING DRAWINGS\SHEETS\RCES-LS-DTLS.DWG PLOTTED ON: 12/2/2022
PLANTING DETAILS
L-5.0 FLOOD RISK REDUCTION IN THE RHEEM CREEK WATERSHED
CREEK ENHANCEMENT
NOVEMBER 30, 2022
90% PLAN SET
--------
--------
--------
AS NOTED
ES, MT
ES, MT, NQ
ES, MT, NQ
SHEET
SCALE
DATE
DRAWN BY
DESIGN BY
CHECKED BY
Restoration Design Group, Inc.
2332 Fifth Street, Suite C
Berkeley, CA 94710
T 510.644.2798 F 510.644.2799
www.restorationdesigngroup.com
RENEWAL DATE
DATE
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ARCHITECT
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#5536 SIGNATURE
DESCRIPTION
REVISIONS
DATEPROJECT TITLE
SHEET TITLEDESIGN PHASE
SCALE:NTS 1PLANT - SMALL
SCALE:NTS 2PLANT - SHRUB
SCALE:NTS 3TREE STAKING
SCALE:NTS 4PATCH LAYOUT TYPICAL
SCALE:NTS 5LIVE CUTTING
SCALE:NTS 6SHEET MULCH
DEPARTMENT OF THE ARMY
SAN FRANCISCO DISTRICT, U.S. ARMY CORPS OF ENGINEERS
450 GOLDEN GATE AVENUE
SAN FRANCISCO, CALIFORNIA 94102
May 11, 2023
Regulatory Division
Subject: File Number SPN-2022-00042S
Ms. Mary Phelps
City of Richmond
450 Civic Center Plaza
Richmond, California 94804
[email protected]
Dear Ms. Phelps:
This correspondence is in reference to your submittal of August 1, 2022, concerning Department of the Army (DA) authorization for the Flood Risk Reduction in the Rheem Creek Watershed project. The project will alleviate chronic flooding of the Rollingwood neighborhood along Rheem Creek located at the intersection of Moyers Road and Annapolis Avenue downstream to just past the intersection of Fordham Street in the City of Richmond, Contra Costa County, California (Lat.: 37.966355° Long.: - 122.332559°).
Work within U.S. Army Corps of Engineers’ (Corps) jurisdiction will include clearing, grubbing and excavating along approximately 1,200 linear feet (approximately 38,310 square feet, 0.88 acre) of the Rheem Creek. Approximately 900 cubic yards of sediment will be excavated and hauled offsite to an approved upland disposal site. and replanting with native vegetation along approximately1,500 linear feet of the creek. The project will temporarily impact approximately 38,310 square feet (0.88 acre) of Rheem Creek due clearing and grubbing and the excavation and removal of approximately 900 cubic yards of sediment. The project will permanently impact 0.13 acre of in stream emergent wetlands. The 12-inch storm drain that flows from Greenwood Court into the creek will be replaced with a new 24-inch storm drain requiring the permanent fill discharge of 195 cubic feet of rip rap below ordinary high water of Rheem Creek. The failing retaining wall will also be replaced by reconstructing the existing bank. All work shall be completed in accordance with the plans and drawings titled “USACE File #SPN-2022-00042, Rheem Creek Restoration Project, Between Fordham Street and Greenwood Drive, Richmond, Contra Costa County, California, May 11, 2023, in 28 sheets,” provided as enclosure 1.
Section 404 of the Clean Water Act (CWA) generally regulates the discharge of dredged or fill material below the plane of ordinary high water in non-tidal waters of the United States, below the high tide line in tidal waters of the United States, and within the lateral extent of wetlands adjacent to these waters. Section 10 of the Rivers and - 2 -
Harbors Act (RHA) generally regulates construction of structures and work, including excavation, dredging, and discharges of dredged or fill material occurring below the plane of mean high water in tidal waters of the United States; in former diked baylands currently below mean high water; outside the limits of mean high water but affecting the navigable capacity of tidal waters; or below the plane of ordinary high water in non-tidal waters designated as navigable waters of the United States. Navigable waters of the United States generally include all waters subject to the ebb and flow of the tide; and/or all waters presently used, or have been used in the past, or may be susceptible for future use to transport interstate or foreign commerce.
Based on a review of the information in your submittal the project qualifies for authorization under Department of the Army Nationwide Permits (NWPs) 7 for Outfall Structures and Associated Intake Structures and 27 for Aquatic Habitat Restoration, Enhancement and Establishment Activities (86 Fed. Reg. 73522, December 27, 2021), pursuant to Section 404 of the CWA of 1972, as amended (33 U.S.C. § 1344 et seq.).
To be eligible for authorization, the project must be in compliance with the terms of the NWP, the general conditions of the Nationwide Permit Program, and the San Francisco District regional conditions cited on our website
(www.spn.usace.army.mil/Missions/Regulatory/Permitting/Nationwide/). You must also be in compliance with any special conditions specified in this letter for the NWP authorization to remain valid. Non-compliance with any term or condition could result in the revocation of the NWP authorization for your project, thereby requiring you to obtain an Individual Permit from the Corps. This NWP authorization does not obviate the need to obtain other State or local approvals required by law.
You s
hall comply with all terms and conditions set forth by the “Clean Water Act Section 401 Water Quality Certification and Order for the Flood Risk Reduction in Rheem Creek Watershed Project, Contra Costa County,” issued by the San Francisco Bay Regional Water Quality Control Board on March 13, 2023 (enclosure 3). You shall consider such conditions to be an integral part of the NWP authorization for your project.
In order to ensure compliance with this NWP authorization, the following special conditions shall be implemented:
1. Heavy equipment shall be used in Corps jurisdiction only where necessary and shall be removed from the site at the earliest opportunity.
2. All appropriate best management practices shall be implemented throughout the project site to help minimize sediment disturbance and suspension within the water.
- 3 -
3. A post construction report shall be submitted 45 days after the conclusion of construction activities. The report shall document construction activities and contain as-built drawings (if different from drawings submitted with application) and include before and after photographs.
4. You shall implement the Flood Risk Reduction in Rheem Creek Watershed - Mitigation Plan dated March 15, 2023, and provide annual monitoring reports for five years by December 31 of each year.
5. If at any time it appears that success criteria will not be met, then you shall develop contingency measures and provide them to the Corps for review and approval prior to implementation.
6. Your responsibility to complete the required compensatory mitigation as set forth in Special Condition 4 will not be considered fulfilled until you have demonstrated mitigation success and have received written verification from the U.S. Army Corps of Engineers.
You may refer any questions on this matter to me telephone at (415) 503-6778 or by e-mail at [email protected]. All correspondence should be addressed to the Regulatory Division, South Branch, referencing the file number at the head of this letter.
The San Francisco District is committed to improving service to our customers. My Regulatory staff seeks to achieve the goals of the Regulatory Program in an efficient and cooperative manner while preserving and protecting our nation’s aquatic resources.
If you would like to provide comments on our Regulatory Program, please complete the Customer Service Survey Form available on our website:
http://www.spn.usace.army.mil/Missions/ Regulatory.aspx
Sincerely,
Katerina Galacatos, Ph.D.
South Branch Chief
Regulatory Division
Enclosures
- 4 -
Copies Furnished Electronically:
City of Richmond, Public Works (Attn. Wendy Wellbrock,
[email protected])
CA RWQCB, Oakland, CA (Attn. Kathryn Hart, [email protected]) Restoration Design Group, Inc. Berkeley, CA (Attn. Rich Walkling, [email protected])
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