Hydrologic and Hydraulic Modeling On-Call Services for Flood Zone 9

sub REQUEST FOR STATEMENT OF QUALIFICATIONS FOR HYDROLOGIC AND HYDRAULIC MODELING ON-CALL SERVICES FOR FLOOD ZONE 9 Submittals due by 4:00 p.m., November 18, 2022 at Marin County Department of Public Works 3501 Civic Center Drive, Room 304 San Rafael, California 94903 with attention directed to Roger Leventhal, P.E. rleventhal@marincounty.org mailto:rleventhal@marincounty.org Final Design and preparation of Construction Plans for Flood Reduction Projects Novato Creek Watershed | i Table of Contents SECTION 1: INTRODUCTION ....................................................................................... 2 OVERVIEW ......................................................................................................................... 2 ABOUT THE DISTRICT

........................................................................................................... 2 ABOUT FLOOD CONTROL ZONE NO. 9 .................................................................................... 2 BACKGROUND .................................................................................................................... 4 SECTION 2: SCOPE OF WORK ..................................................................................... 6 SECTION 3: SUBMITTING A STATEMENT OF QUALIFICATIONS..................................... 7 NOTICE ............................................................................................................................. 7 SUBMITTAL INSTRUCTIONS .................................................................................................... 7 QUESTIONS AND CLARIFICATIONS ........................................................................................... 7 STATEMENT OF QUALIFICATIONS (SOQ) SUBMITTAL REQUIREMENTS ............................................ 7 CONSULTANT SELECTION TIMELINE ......................................................................................... 9 AWARD OF CONTRACT ......................................................................................................... 9 MINIMUM QUALIFICATIONS .................................................................................................. 9 INSURANCE ...................................................................................................................... 10 REFERENCE MATERIALS ....................................................................................................... 10 SAMPLE CONTRACT AGREEMENT ......................................................................................... 10 SECTION 4: PROPOSAL EVALUATION AND SELECTION .............................................. 11 EVALUATION CRITERIA ........................................................................................................ 11 EVALUATION AND SELECTION PROCESS .................................................................................. 11 NEGOTIATIONS ................................................................................................................. 11 SECTION 5: EXHIBITS ............................................................................................... 13 EXHIBIT A: 2017 MEMO ON THE USACE PEER REVIEW PROCESS ................................................ 14 EXHIBIT B: GEOGRAPHIC DATA CONTRACT DELIVERABLES GUIDELINES .......................................... 15 EXHIBIT C: SAMPLE MARIN COUNTY PROFESSIONAL SERVICES CONTRACT AGREEMENT .................. 19 Hydrology & Hydraulic Modelling: On-call Services| 2 SECTION 1: INTRODUCTION Overview The Marin County Department of Public Works Flood Control District (the “District”) is inviting qualified engineering firms to submit a statement of qualifications to support ongoing hydrologic and hydraulics modeling needs in the Ross Valley County of Marin Flood Control Zone No. 9. The District will select one or more firms with which to execute a Professional Services contract for “on-call” hydrological and hydraulic modeling work. Assigned tasks have the potential to cover a range of services, including: • Hydrologic and hydraulic analysis of existing conditions using existing HEC-HMS and HEC-RAS 5.0 models • Hydrologic and hydraulic analysis of proposed flood protection project alternatives • Conducting updates to existing HEC-RAS 5.0 model and evaluate benefits and costs for upgrading to latest version 6.3 • Preparation of FEMA map revisions including submittal of CLOMRs, LOMRs and supporting technical documents. Note that this work may require use of the FEMA effective model and not the District’s 1D/2D model. The contract shall remain active for a period of three years. Services will be provided on an as needed basis by Task Orders or via a negotiated scope of work. About the District The Marin County Flood Control and Water Conservation District (District) was formed in 1953 by an act of the California State Legislature with the primary purpose of controlling flood and storm waters of streams which flow within and into the county. The Marin County Board of Supervisors sits as its board and the District is staffed by the Department of Public Works. The boundaries of the District are contiguous with those of the county and eight "zones" have been established to address specific issues related to flooding within individual watersheds. Flood Control Zone No. 9 (Zone No. 9), the location of the proposed scope of work, is located within the Ross Valley watershed which includes the Corte Madera Creek watershed (see Figure 1). About Flood Control Zone No. 9 Zone No. 9 is the County’s second largest flood control zone. Its service area includes the communities of Fairfax, Sleepy Hollow, San Anselmo, Ross, Kentfield, Greenbrae, Larkspur, and Corte Madera. The Zone was established as the “Ross Valley Flood Protection and Watershed Program” following the December 2005 flooding of Ross https://marinflooddistrict.org/flood-control-zone-9-ross-valley/ https://marinflooddistrict.org/ross-valley/ Hydrology & Hydraulic Modelling: On-call Services| 3 Valley which caused nearly $95 million in damages to the communities of Fairfax, San Anselmo, Ross, Kentfield, and Larkspur. Figure 1: Flood Control Zone No. 9 The Program is a regional effort led by the Marin County Flood Control and Water Conservation District. It utilizes a community-based participatory planning and design process that incorporates input from Ross Valley residents and stakeholders to help shape and implement solutions which significantly reduce local flood risk. The Program’s objective is to substantially reduce the frequency and severity of flooding throughout the Ross Valley watershed, in an economically viable manner while Hydrology & Hydraulic Modelling: On-call Services| 4 prioritizing public safety and minimizing environmental impacts. The Flood Control District works towards this objective through these actions: • Reduce and attenuate flows by increasing floodplain detention storage and stormwater infiltration • Increase creek and floodplain capacity to convey floodwaters by: o Enlarging some channels through removal, modification, or replacement of existing obstructions to flow, such as structures or bridges o Containing flood flows as they move through the watershed o Conducting regular creek and channel maintenance • Community flood education including flood preparedness real-time rain and stream monitoring, flood response checklists and information Background The 28-square mile Ross Valley watershed extends from Mt. Tamalpais and White’s Hill through the communities of Fairfax, Sleepy Hollow, San Anselmo, Ross, Kentfield, Greenbrae, Larkspur, and Corte Madera to San Francisco Bay. The watershed includes 44 miles of stream channels. Ross Creek drains the northern slope of Mt. Tamalpais; San Anselmo Creek and its tributaries drain the northwestern portion of the watershed. The two channels join to form Corte Madera Creek, which continues through more than a mile of concrete-lined channel past the confluences of Larkspur and Tamalpais Creeks and into the salt marsh at the mouth. Despite the dense development in the valley floors, the Ross Valley watershed supports a great diversity of habitats from redwood forest to serpentine outcrops, chaparral, oak woodlands, grasslands, and tidal wetlands. It is home to many protected species including at least 17 plants, steelhead trout, spotted owls, San Pablo Song Sparrow, California clapper and black rails, and salt marsh harvest mouse. Corte Madera Marsh Ecological Reserve is recognized as an Important Bird Area by the Audubon Society. Phase 1 of the Zone 9 work plan projects seek to reduce peak out-of-bank flows and achieve protection from a 10-year to 25- year flood event (10% chance of occurring or being exceeded in any one year). Flow reduction measures include detention basins, located in the upper reaches of the watershed to detain peak flows during flood events. Capacity enlargement measures include bridge replacements in Fairfax, San Anselmo and Ross to remove impediments to flows and reduce localized flooding; and creek improvements watershed-wide to increase capacity and handle flood flows as they move through the watershed. Flood preparation measures include coordination with local emergency officials and planners in development of local hazard mitigation plans, communication with the community on flood preparation planning and education, and working on flood plain management activities that exceed the minimum standards through the Community Rating System to help reduce flood insurance premium rates for policyholders. https://www.marincounty.org/depts/pw/divisions/creeks-bay-and-flood/fema-flood-information Hydrology & Hydraulic Modelling: On-call Services| 5 The Ross Valley Watershed and Flood Risk Reduction Program (Program) uses a calibrated model developed by Stetson Engineers, using software from the U.S. Army Corps of Engineers Hydrologic Engineer Center (HEC). Use of the HEC software has become the industry standard, though similar software is available from other sources. Figure 2: Flood Control Zone 9 Work Plan In 2016, Stetson was retained by the County to upgrade the existing Ross Valley HEC- RAS 1D steady-state hydraulic model (version 4.1) to a combined 1D/2D HEC-RAS unsteady-state hydraulic model using the then recently released version 5.0 of HEC-RAS and expand the existing model domain upstream along tributaries to the upper watershed detention basins proposed for environmental review. The Program’s resulting HEC-RAS 5.0 model was peer reviewed by the US Army Corp of Engineers, San Francisco District in 2018 (see Exhibit A for a 2017 memo detailing the then underway USACE peer review process). Two HEC computer programs are required to perform the existing computer modeling simulations: Hydrologic Engineer Center- Hydrologic Modeling System (HEC-HMS) and Hydrologic Engineer Center- River Analysis System (HEC-RAS). The HEC-HMS program uses the size, slope and vegetation of the land and the rainstorm to estimate the amount of creek flow. The HEC-RAS program uses the size and slope of the creek channel and adjacent floodplain and the amount of creek flow to estimate the water level, velocity and extent of flooding. Hydrology & Hydraulic Modelling: On-call Services| 6 SECTION 2: SCOPE OF WORK The work to be performed under this Agreement will be individually negotiated as the need for services arises and will be authorized by written work assignments. In some cases, the County may elect to assign only specific portions of a project, or in other cases, the entire project including auxiliary associated work to the Contractor. The primary purpose of this scope is to support ongoing Hydrologic and Hydraulics modeling needs in Marin County Flood Control Zone No. 9. Secondary scope items include preparing documentation to support compliance with FEMA no-rise requirements within a regulatory floodway and to prepare map revisions following project completion. The summary of required technical expertise and skills is as follows: • Hydrologic analysis with HEC-HMS • Hydraulic analysis with HEC-RAS • Familiarity and experience with FEMA map revision updates and coordination with FEMA • Ability to develop graphics and outreach materials to explain complex technical topics to a layperson audience. • Strong written and verbal communication skills to explain model results to a layperson audience. Hydrology & Hydraulic Modelling: On-call Services| 7 SECTION 3: SUBMITTING A STATEMENT OF QUALIFICATIONS Notice The Marin County Nuclear Free Zone law, the provisions of which are carried out by the County Government's Peace Conversion Commission, prohibits the County from making investments in, purchasing from, or in any way contracting with Nuclear Weapons contractors, or their subsidiaries. The Commission, using the procedures outlined in Marin County Code Sections 23.13.010 to 23.13.080 has determined that the corporations listed on the website below are nuclear weapons contractors. The County, therefore, will only make investments in, purchase from, or in any way contract with such listed companies under circumstances where no reasonable alternative is available. Please refer to the following link for details: http://www.co.marin.ca.us/depts/bs/main/brdscomm/mcbds/PeaceConv/contractors.cfm Submittal instructions Respondents shall submit three (3) printed copies of their Statement of Qualifications to the address listed below. Fax or email submittals will not be accepted. Marin County Flood Control and Water Conservation District Attn: Roger Leventhal, Room 304 Physical address (if delivered in person): 3501 Civic Center Drive, Room 304 reception desk San Rafael, CA 94903 Mailing Address: P.O. Box 4186 San Rafael, California 94913 Proposals will be received until 4:00 PM November 18th, 2022. The District will not be responsible for submittals that are delinquent, lost, mismarked, sent to an address other than that given herein, or sent by mail or courier service and not signed for by the District. Questions and clarifications Firms requesting clarification pertaining to this RFQ shall direct all questions in writing to Roger Leventhal at: rleventhal@marincounty.org. Statement of Qualifications (SOQ) submittal requirements http://www.co.marin.ca.us/depts/bs/main/brdscomm/mcbds/PeaceConv/contractors.cfm Hydrology & Hydraulic Modelling: On-call Services| 8 To maintain uniformity in the evaluation process, your SOQ shall be limited to a maximum of 15 pages on single-sided, 81⁄2” x 11” paper (occasional 11” x17” sheets for charts and graphics are acceptable). The text font (ARIAL, TAHOMA, or similar) shall not be smaller than size 10. The table of contents, front and back covers, section dividers, and resumes are excluded from the page count. The SOQ shall be bound, with tabbed section dividers, and include the following sections in order: 1. Cover letter Provide a brief, formal letter that provides information regarding the firm and its ability to perform the requirements of this RFQ. Emphasize those aspects of your organization and experiences that distinguish your firm from other firms who may respond to this RFQ and why your firm is especially qualified. Include the primary consultant’s name and business address, as well as the Project Manager’s name, telephone number and email address. Summarize your understanding of the role and briefly introduce your team. Address any exceptions to the Insurance requirements and/or the Professional Services Agreement, both of which are included in this RFQ as attachments. The cover letter shall be signed by the person authorized to negotiate a contract for proposed services with the County of Marin. 2. Relevant Work Experience Include a summary of relevant work experience that your team has completed. Provide project descriptions, services provided, and consulting fees. List all hydrologic and hydraulic modelling related services you are qualified to provide. 3. Project Team Structure and Resumes Provide an Organization Chart with a description of who will perform the Task(s). Show the Project Manager and the key staff roles proposed for this on-call contract, including any subconsultants’ staff. Include contact information and a brief summary of the Prime firm’s organization and history. Provide a resume and contact information for each person who will be involved in the project. Please keep resumes concise and focused. Include contact information and a brief summary of each subconsulting firm’s organization, history, and three firm references. Provide a brief resume (one page each) of each key subconsultant team member. Excluding circumstances beyond the consultant’s control, it is expected that the project team proposed under this SOQ will remain unchanged throughout the duration of the Project. Replacement of key staff without consultation with the County of Marin will not be permitted and may be grounds for termination of the contract. 4. References Hydrology & Hydraulic Modelling: On-call Services| 9 Respondent must submit a minimum of three (3) client references from different sources of work performed within the past five (5) years similar in size and scope of the Scope of Work in this RFQ. For each reference provided, include the company name and address, the name, telephone number, and e-mail address of the contact person who served as the manager for the project, a brief description of the project, the services provided, the project budget, and the duration and outcome of the project. 5. Assumptions Describe any assumptions used in preparing your proposal. 6. Fee proposal 1. One copy of your proposed rates and fees shall be submitted in a separate sealed envelope, plainly labeled “Fee Proposal” with the prime company’s name and the project title. If different rates are to be used on federally funded projects, the consultant shall provide a separate set of rates. 2. Consultant’s rates and fees proposal must remain active for a time period of no less than thirty-six (36) months. Any annual or standard rate increases that may occur within this time period must be clearly defined in the original fee proposal. 3. The fee proposal shall reflect all anticipated fee increases during the contract duration. Consultant selection timeline Distribution of RFQ October 26, 2022 Proposals Due November 18, 2022- 4PM Notification of Selected Firm December 16, 2022 Timeline is tentative and for informational purposes only Award of Contract After a consultant is selected, the award of an Agreement is contingent upon the successful negotiation of terms, acceptability of fees, and formal approval by the County. The awarded contract(s) shall remain active for a period of three years. Minimum qualifications In order for a submittal to receive consideration, respondents must meet the following minimum qualifications: a. Respondent shall be licensed by the State of California to conduct the services described in Scope of Work. Hydrology & Hydraulic Modelling: On-call Services| 10 b. Respondent team must have a minimum of ten (10) years’ experience in the key technical disciplines as required for successful delivery on this RFQ’s scope of work. c. Respondent’s main personnel assigned to the project shall have current and valid credentials and have a minimum of ten (10) years’ experience in same or similar type of work. Insurance Respondent shall be required to provide proof of the required insurance coverage as set forth in the Sample Agreement (see Exhibit C) within seven days of notification of selection of award. Failure to demonstrate proof of minimum insurance or failure to acquire minimum insurances will result in a forfeit of said award. The minimum insurance coverage required for this project is as follows: General Liability = $1,000,000 ($2,000,000 aggregate) Automobile Liability = $1,000,000 Workers’ Compensation = California Statutory Requirements Reference materials A 2017 memo on the USACE peer review process of the Ross Valley Hydrologic and Hydraulic (H&H) Model is provided in Exhibit A of this RFQ. Existing hydrologic and hydraulic model files for Flood Zone 9 will be shared with the selected consultant following contract award. Sample Contract Agreement A Sample Contract Agreement is provided in Section 5, Exhibit C of this RFQ. Before submitting a proposal, all respondents are requested to carefully review and abide by all of the provisions set forth in the Sample Contract Agreement. The Sample Agreement attached is our most current Professional Services Contract Agreement. The Contract is regularly updated and the most current document will be sent to the Consultant at the time of contract negotiations. Hydrology & Hydraulic Modelling: On-call Services| 11 SECTION 4: PROPOSAL EVALUATION AND SELECTION Evaluation criteria Proposals shall be evaluated on the basis of the responses to the SOQ submittal requirements stated in this RFQ. The evaluation of a respondent’s ability to provide the required services will be based on the written material. Each proposal will be competitively evaluated on its strengths and weaknesses against the following criteria, which are listed below in no order of importance. Staffing • Ability to make available the personnel and team that has the required licenses, experience, communication skills, technical competence, and qualifications necessary to provide the requested services. • Staff resumes and staffing plan (i.e., how staff will be organized and managed to support the agreement.) This includes the organization chart identifying key personnel, job titles and responsibilities for personnel who will be assigned to these projects. • Dedicated staff with the most experience directly related to the services described in the Scope of Work. Past project experience • Demonstrated experience in and successful contract performance for efforts similar to work outlined in the Scope of Work. Previous experience and performance should demonstrate the breadth of services the Consultant is qualified to perform, highlighting experience with public agencies within the last five (5) years. • Client satisfaction with similar services/projects. • Proven ability to successfully complete work on schedule. Cost Proposals The Consultant’s cost proposal will be evaluated and compared. Evaluation and selection process SOQs will be reviewed to verify compliance with submission instructions and minimum qualifications. Any proposal not meeting the minimum qualifications may be deemed non- responsive. The consultant will be selected by the Public Works Project Manager, staff representatives from the Flood Control District and the Department of Public Works. Negotiations Negotiations regarding agreement terms, conditions, scope of work, and pricing may or may not be conducted with respondent. Therefore, proposals submitted should contain the respondent’s most favorable terms and conditions, since the selection and award may be made without Hydrology & Hydraulic Modelling: On-call Services| 12 discussion with any respondent. If satisfactory agreement provisions cannot be reached, then negotiations may be terminated. The District may elect to contact another firm submitting a proposal. This negotiation sequence continues until an agreement is reached. The District reserves the right to: a) negotiate the final agreement with any respondent(s) as necessary to serve the best interests of the District; b) withdraw this solicitation at any time without prior notice and, furthermore, makes no representations that any agreement will be awarded to any respondent responding to this solicitation; or c) award its total requirements to one respondent or to apportion those requirements among two or more respondents as the District may deem to be in its best interests. Hydrology & Hydraulic Modelling: On-call Services| 13 SECTION 5: EXHIBITS Hydrology & Hydraulic Modelling: On-call Services| 14 Exhibit A: 2017 memo on the USACE peer review process U.S. ARMY CORPS OF ENGINEERS PEER REVIEW PROCESS Hydrologic and hydraulic modeling work products developed for the Corte Madera Creek Flood Risk Management Project (Project) undergo a peer review process. Since the Project is federally sponsored by the US Army Corps of Engineers (USACE), hydraulic work products developed for the Marin County Flood Control and Water Conservation District, Flood Control Zone 9 (Flood Control District) as well as products developed by USACE undergo the USACE standard peer review process (performed by USACE) as outlined below: Step 1. District Quality Control (DQC) includes Quality Checks (QC) at the USACE San Francisco District level and occurs during the product development process as a routine management practice. QCs are typically performed by the Project Delivery Team (PDT), a group of designated subject-matter specialists including supervisors, work leaders, team leaders or other qualified staff from USACE and the local project sponsor (Marin County Flood control and Water Conservation District). During the DQC, the PDT work together to ensure effective coordination, accuracy and consistency in work products across all project disciplines. Step 2. Following DQC, Agency Technical Review (ATR) is undertaken to ensure the quality and credibility of the government's scientific information and is considered an independent review by qualified personnel from outside of the San Francisco district. Once ATR is completed and USACE San Francisco District Chief has approved the ATR, USACE sends a package including technical reports, ATR report, comments and responses to the USACE South Pacific Division for final review and certification. Ross Valley Watershed Hydrology and Hydraulic Model USACE Peer Review As of December 2017, the Ross Valley Hydrologic and Hydraulic (H&H) Model is undergoing USACE Peer Review. DQC is awaiting certification and the review is in Step 2, ATR. ATR of the H&H Model will be reviewed and certified prior to release of the Draft Environmental Impact Report/Environmental Impact Statement report, anticipated in the Spring 2018. The Ross Valley Watershed H&H Model review has two separate groups of USACE subject matter experts performing DQC and ATR for the hydrology and hydraulics as indicated below. Project Hydrology DQC conducted by: Mr. John High, Chief, Hydrology Section, Sacramento District Project Hydraulics DQC conducted by: Adam Bier, P.E., Senior Hydraulic Engineer, Los Angeles District Reuben Sasaki, P.E., Regional Technical Specialist, Los Angeles District Patrick O'Brien, P.E., Regional Technical Specialist, San Francisco District Brian Haines, Hydraulic Engineer, San Francisco District Trevor Greene, Hydraulic Engineer, San Francisco District Janice Lera-Chan, P.E., Chief, Water Resources Section, San Francisco District Project Hydrology ATR conducted by: Mr. David Williams, P.E., Chief, Hydrology and Hydraulics Engineering Section, Tulsa District Project Hydraulics ATR to be conducted after the Tentatively Selected Plan milestone Hydraulic Study and Alternatives Analysis for Novato Creek and Tributaries | 15 Exhibit B: Geographic data contract deliverables guidelines GEOSPATIAL DATA CONTRACT DELIVERABLES GUIDELINES MARIN COUNTY FLOOD CONTROL AND WATER CONSERVATION DISTRICT (updated 01/19/2022) 1. PURPOSE and SCOPE The Marin County Flood Control and Water Conservation District (District) strives to improve service delivery, increase efficiencies, and standardize and centralize data. Setting forth the District’s expectations for geospatial data delivery will help us achieve these goals. This document provides guidance to consultants, contractors, partners, and any others who provide geospatial data to District projects, programs, or staff. It provides guidance on recommended formats and associated documentation for delivering geospatial data and related information. This document is intended as general guidance; individual projects may require modifications or enhancements to these guidelines. District project managers and consultants are encouraged to work together to set and manage expectations for geospatial data deliverables. 2. OVERVIEW There are several ways to represent geospatial data, including vector data (points, lines, polygons), rasters/images, and tabular data with spatial coordinates. Appropriate representations will vary depending on the type of data and the scope and goals of the contract or project. Data formats should be clearly stipulated and agreed upon among contractors or partners and the District. Questions about data representation and format should be addressed and resolved in consultation with the project manager and GIS data specialist prior to data collection, assembly, and processing. The District uses Esri ArcGIS software and Autodesk AutoCAD (computer aided design) software. Data deliverables in formats compatible with these are preferred. Recommended data formats are specified in Item 3 below. All geospatial files submitted to the District must include spatial reference information that identifies the coordinate system/projection, datum, and units of measure. Recommended and required spatial reference parameters are specified in Item 4 below. All data submitted to the District must be accompanied by associated metadata that provides all necessary information for understanding the submittal, as described in Item 5 below. 3. RECOMMENDED GEOSPATIAL DATA FILE FORMATS The following data file formats are recommended: Vector Data  Esri File Geodatabase (.gdb)  Shapefile (.shp)  AutoDesk AutoCAD drawing files (.dwg) Hydrology & Hydraulic Modelling: On-call Services| 16 Raster Data/Aerial Imagery  Esri File Geodatabase Raster (.gdb)  TIFF image as a GeoTIFF or with world reference file (.tif, .tfw)  JPEG image with world reference file (.jpg, .jpw) LiDAR Point Cloud Data  LAS file (.las)  LAS dataset (.lasd) Tabular Data  Microsoft Excel (.xlsx)  Tab or comma-delimited text files (.txt, .csv) Map Deliverable  Esri ArcMap Document (.mxd)  Esri ArcMap Package (.mpk)  Esri ArcGIS Pro Project (.aprx)  Esri ArcGIS Pro Project Package (.ppkx) Other data formats may be acceptable under some circumstances but should be Esri supported file formats (ArcGIS supported data formats; ArcGIS supported raster and image formats). Consultants should check with the project manager and GIS data specialist whether other formats can be accepted. Simple attribute data should be included as part of the ArcGIS attribute table. Complex attributes should be delivered in a well-structured relational Esri file geodatabase. Spatial features and database records must share a common field with identifier that relates the spatial feature to the table record. Associated tabular data files may be provided to connect geospatial feature locations with additional attribute information; primary and foreign keys to create the data connection must be clearly identified and documented. (Note: It is not acceptable to link geospatial features to tables using ObjectID.) CAD drawing files should include meaningful and interpretable layer names; otherwise, a key to layer names should accompany the data. It may be necessary to deliver certain CAD data files in two versions: one complete to be read by AutoCAD, and one to be read by Esri GIS software, in which non-geographic elements such as drawing borders, title blocks, north arrows, and detail drawings are not included. LiDAR LAS files should include point classification as defined by the American Society for Photogrammetry and Remote Sensing (ASPRS) standards (ASPRS LAS file format). For maps created in GIS, the GIS project files should be delivered as Esri ArcMap Package (.mpk) or Esri ArcGIS Pro Project Package (.aprx) files, which include map(s) with the symbology and layout(s) used in the final map(s) along with copies of all the spatial data in the map included. Raster data/aerial imagery with large file size can cause issues with map packaging and should Hydrology & Hydraulic Modelling: On-call Services| 17 not be embedded in ArcMap Packages / ArcGIS Pro Project Packages. Instead, include raster data/aerial imagery files in a separate directory and provide information to link these files to the map document / project after extraction. Esri ArcMap documents (.mxd) or ArcGIS Pro projects (.aprx) with spatial data in a stand-alone directory structure may also be delivered. Map documents / projects must use relative paths and must not use printer-specific page settings. Maps for display (i.e. PDF, JPEG, PowerPoint, or hard copy) should accompany map deliverables as reference documents, but they are not considered geospatial data deliverables. 4. SPATIAL REFERENCE REQUIREMENTS All electronic geospatial data must have a spatial reference defined and embedded in, or associated with, the data file. If not readable by Esri software, it must be listed in a document with complete spatial reference information (coordinate system/projection, parameters, and datum). If elevation data is included, vertical datum and unit of measure must be specified. In the case of CAD data, the spatial reference must be a commonly used regional or national coordinate system. CAD data that is in page space or a custom site- specific coordinate system is not acceptable. The preferred horizontal coordinate system for vector data is: Projection: California State Plane, Zone III Datum: North American Datum 1983 HARN Units: Foot_US (i.e. “survey foot”) (WKID: 2872 Authority: EPSG) Raster data including aerial photography may be submitted in their native projection/coordinate system. Elevation data (surveyed elevations or topographic surface data) must be referenced to the North American Vertical Datum (NAVD) 1988. If spatial coordinate information is provided in tabular format, at a minimum it should include the attribute fields below, along with complete spatial reference information.  ID – a unique identifier given to each feature  Y coordinate (if Latitude, in decimal degrees with 6 significant digits)  X coordinate (if Longitude, in decimal degrees with 6 significant digits) 5. METADATA REQUIREMENTS All data submitted must be accompanied by associated metadata that provides all necessary information for understanding the submittal. The District strongly encourages preparation of metadata using Esri ArcCatalog or ArcGIS Pro, or in a format that can be easily imported into ESRI software. The metadata should be located in the same directory as the data file, share the same naming prefix and, when appropriate, be embedded with or attached to the data. For any data files that do not support ESRI metadata, provide relevant information in an associated and clearly identified document file such as Microsoft Word, text file, or similar document. A metadata document describing the entire dataset should accompany the submittal and at a minimum include: Hydrology & Hydraulic Modelling: On-call Services| 18  List of each file contained in the submittal  Narrative description of the contents of the dataset, including all spatial data, related tables, and map deliverables  Version and date of the submittal  Information on sensitive data issues (if any)  A short description of data themes (limited to one to two sentences for each theme)  Linking fields (to documents, digital photographs, web content, etc.)  Description of QA/QC procedures used to assess the data including measures of spatial accuracy and precision Metadata for each individual data file should at a minimum include:  Narrative description (Abstract), with source of input data, collection methods, equipment used, and appropriate scale for use  Process information including how and when the data were collected, assembled, and/or updated and by whom, equipment and methods used, and any other relevant information  Complete descriptions of all codes and all other information in the attribute fields  Contact information for person who collected and/or prepared the geospatial data  Statement about any issues with the data, including any assumptions, appropriate uses, data sensitivity, or any other relevant statement about how the data should or should not be used. 6. FILE NAMING CONVENTIONS Clear, short, and descriptive file and attribute field names should be used that convey the nature of the data and subject represented. Names should not contain spaces or special characters but may contain underscores. (Note: Long file and path names of more than 128 characters may not allow backup onto computer or external hard drives.) File names must be unique, complete, and interpretable outside of the file structure. 7. DATA DELIVERY Data submittals should be delivered via electronic data transfer (e.g. email attachment, file sharing site, etc.), or physical storage device (e.g. USB Flash Drive or external hard drive). The choice of delivery method should be based on the total file size of the submittal. Physical storage device delivery should be used if digital transfer is not feasible due to file size and/or upload-download time. 8. REFERENCES EPA Geospatial Advisory Committee. (2020-09-15). National Geospatial Deliverable Standard. U.S. Environmental Protection Agency. Retrieved 2022-01-11 from https://www.epa.gov/sites/default/files/2020- 10/documents/nationalgeospatialdeliverablestandard.pdf County of Marin Department of Public Works, Water Resources Division. (2019-05-09). DPW_GUIDELINES FOR SUPPLYING GIS DELIVERABLES.pdf. Hydrology & Hydraulic Modelling: On-call Services| 19 Exhibit C: Sample Marin County Professional Services Contract Agreement Hydrology & Hydraulic Modelling: On-call Services| 20 Hydrology & Hydraulic Modelling: On-call Services| 21 Hydrology & Hydraulic Modelling: On-call Services| 22 Hydrology & Hydraulic Modelling: On-call Services| 23 Hydrology & Hydraulic Modelling: On-call Services| 24 Hydrology & Hydraulic Modelling: On-call Services| 25 Hydrology & Hydraulic Modelling: On-call Services| 26