Long Beach City Council
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APPENDIX M

ENVIRONMENTAL PROFESSIONAL QUALIFICATIONS
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NICKY G. ROBINSON, PE, QSD, QSP

SENIOR I ENGINEER
Ms. Robinson is a Professional Engineer with a variety of experience serving both public sector and private clients. Her professional engineering and management experience has been focused in remediation design and construction site oversight, stormwater management, Phase I and II environmental site assessments, environmental field sampling and air monitoring, site inspections, and technical data review. Ms. Robinson’s environmental field experience includes soil and groundwater sampling, soil vapor studies, stormwater sampling, indoor air quality studies, air monitoring activities, and site cleanups. She has considerable experience managing and performing environmental due diligence and property transfer projects. Ms. Robinson’s project experience also includes management of Total Maximum Daily Loading (TMDL) studies in surface waters; collecting storm water samples to quantify “first-flush” impacts and composite samples for pollutant loading characterization; and obtaining NPDES permits and managing the water sample collection and analysis process to ensure permit compliance. Ms. Robinson is a licensed Civil Engineer in the state of California. She is a California licensed Qualified SWPPP Developer and Qualified SWPPP Practitioner and has received the OSHA 40 Hour HAZWOPER Training.

REPRESENTATIVE EXPERIENCE
Environmental Characterization and Remediation
 Southern California Edison (SCE) Power Pole Relocation into Closed and Capped Landfill, Carson, California – Ms. Robinson was the project manager for the environmental component of a power pole relocation project that required removing two power poles and installing two new power poles with associated anchors and wires into a closed and capped landfill under the regulatory oversight of the DTSC. Ms. Robinson was responsible for providing environmental and engineering direction to SCE to guide their overall design and construction sequencing, soil handling and monitoring procedures, and air monitoring program. On behalf of SCE, she obtained necessary permits including a Rule 1150 permit from the AQMD, developed soil handling and monitoring procedures, prepared work plans for a field investigation program to obtain environmental and geotechnical design data to direct the final power pole design and for the final power pole installation work, and developed an air monitoring activities related to operations at the landfill. Ms.

Robinson provided direct field oversight of the field investigation program and the final power pole relocation work, which included air monitoring for SCAQMD Rules 1150, 402, and 403. She coordinated with various entities including the DTSC, the client, the landowner, the site occupant, the engineer of record for the landfill, and the AQMD for the various components of this project.

Ms. Robinson was also responsible for preparing technical documents including work plans and completion reports and management to ensure the overall project success and quality.  Former Riverton Steel Facility, Southgate, California – Ms. Robinson performed initial due diligence and reviewed field data for the investigation and remediation of a former steel production facility that is now currently adjacent to a residential development and a newly developed school.

She assisted with scoping for remediation of leak impacted soil and concrete. Ms. Robinson Nicky G. Robinson, PE, QSD, QSP
Senior I Engineer
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developed and oversaw the implementation of an air monitoring program during demolition and concrete crushing operations to ensure protection of adjacent receptors. The CMS/RAP for the remedial approach at the facility, which dovetails remediation and development, is currently pending agency approval. The remedial activities will include perimeter dust monitoring in addition to air monitoring in compliance with SCAQMD Rules 1166 and 1466 permits and SCAQMD Rules 401, 402, and 403. Ms. Robinson is responsible for the management and oversight of these air monitoring activities in addition to review and submittal of data and documentation to the agency.  Baker Cold Storage Facility Brownfield Clean-up, Long Beach, California – Ms. Robinson is the engineer of record for the remedial design for a site that is impacted with pentachlorophenol (PCP), metals, VOCs, and dioxins/furans and under the regulation of the DTSC. She assisted with the development of the Soil and Groundwater Response Plan and the Remedial Design Document for the site that is developed with a 250,000 square-foot cold storage facility. During development, Ms. Robinson conducted oversight of the site activities, including soil import/export, excavation, construction, and the installation of a methane barrier, and she has performed work zone and perimeter air monitoring. She also prepared daily activity reports including the analysis of air monitoring and Rule 1166 monitoring data to submit to the DTSC. Ms. Robinson coordinated field activities including the decontamination and sampling of former drip pads, air monitoring activities, and wastewater sampling. She managed the data obtained from daily field activities and trained the field staff. Ms. Robinson prepared the Remedial Action Completion Report and the Operation and Maintenance Plan for the remedial activities.
 Black Mountain Industrial Complex, Henderson, Nevada – Ms. Robinson was a field engineer on site for the remediation of Tronox’s industrial facility in Henderson, Nevada in which approximately 800,000 cubic yards of impacted soil were removed. Previously the world’s largest magnesium production facility during World War II, the site was later utilized for the manufacture of rocket fuel, other products, and most recently alkali and manganese oxide-based chemicals.

Historical industrial operations resulted in subsurface impacts from heavy metals, perchlorate, pesticides, chlorinated solvents, asbestos, radionuclides, and other chemicals. Her responsibilities included providing technical oversight of excavation, construction, and groundwater pumping well installation activities; collecting groundwater samples; obtaining soil and air samples; monitoring dust levels; overseeing the perimeter and work zone air monitoring programs; and conducting weekly site inspections for SWPPP compliance. Ms. Robinson coordinated with design engineers to oversee the installation of their remediation and monitoring systems and provide field support and input for design revisions.

Environmental Assessments, Investigations, and Characterization  CenterCal Development, Long Beach, California – Ms. Robinson is the engineer of record for the remedial design of a property in Long Beach that was formerly partially occupied by a gasoline service station with documented leaking underground storage tanks (USTs) impacting the subsurface. Historic site operations also included oil wells and crude oil pipelines. Ms. Robinson assisted with the design of an excavation program to remove impacted materials to accommodate the development of a mixed-use commercial and residential facility. Her work included analyzed historic investigation results and analytical data to determine the remediation program and provide support for the engineering decisions to reach a settlement agreement with the responsible party for the contamination present at the Site. Ms. Robinson also assisted with the preparation of various Nicky G. Robinson, PE, QSD, QSP
Senior I Engineer
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documents and reports for the site including a Remedial Action Plan, remedial costing analysis, and responses to questions from regulators and the responsible party.  Kimco Lakewood Plaza, Bellflower, California – Ms. Robinson conducted soil and indoor air sampling to help determine a remedial design for soil impacts with VOCs from a former dry cleaning operation. She oversaw excavation activities and collected confirmation samples. Ms. Robinson managed the data and documents associated with the project and assisted with the preparation of final reports.
 Historic Oil Fields, Brea, California – Ms. Robinson conducted a Phase I ESA of historic oil fields spanning over 3,000 acres in Brea with operations still active across portions of the site. She coordinated a limited Phase II investigation across the site and utilized the results to prepare remedial cost documents, estimate of impacted material, and recommendations for areas of potential concern for redevelopment. She prepared all documentation, figures, and spreadsheets for meetings with developers interested in redeveloping the site.  Park and Market Redevelopment, San Diego, California – Ms. Robinson managed and performed field activities, investigations, and oversight of the redevelopment of a property located in downtown San Diego that was formerly occupied by automobile repair facilities and several burn wells and pits associated with historic residential development. During excavation activities, impacted soils were encountered when former burn wells impacted with elevated concentrations of lead up to 60,000 parts per million. Ms. Robinson prepared environmental project documentation including a health and safety plan, a soil management plan, and completion report, collected samples and provided oversight of the handling and removal of lead impacted soil, and performed air monitoring during excavation and handling of lead impacted soil.  Monsanto Former Detergent Manufacturing Facility, Carson, California – Ms. Robinson measured groundwater levels and collected groundwater samples to monitor for hydrocarbons, predominantly benzene, which migrated through the soil to the groundwater beneath the site and migrated downgradient. Some samples were collected on the adjacent oil refinery property and Ms. Robinson received the appropriate training to access the refinery.  Oxygen Biosparge Pilot Scale Investigation, Carson, California – Ms. Robinson collected groundwater samples using low flow sampling techniques as part of an oxygen biosparge in situ treatment system. Work was performed using supplied air in Level B personal protective equipment. She also routinely works in conjunction with a mobile laboratory to simultaneously collect and analyze soil vapor samples to monitor benzene concentrations as part of the pilot scale investigation.
 Los Angeles World Airports, Los Angeles International Airport, Los Angeles, California – Ms. Robinson performed reviews of environmental documents including site investigation and remedial reports and agency correspondence for Los Angeles World Airports’ tenants at LAX to create summaries of key environmental information for input into the Conceptual Site Model. She also managed the review of similar work by other consultants for the facility. Ms. Robinson utilized the results of these investigation efforts to develop a facility wide groundwater monitoring program.  Former Paint Facility, City of Commerce, California – Ms. Robinson was responsible for coordinating the field activities associated with collecting soil vapor and LNAPL samples for a former paint facility. A soil vapor extraction system was operated on the site and sampling was Nicky G. Robinson, PE, QSD, QSP
Senior I Engineer
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performed to develop a conceptual site model to assess the effectiveness of continued remediation at the Site. Ms. Robinson was responsible for coordinating the sample collection and analysis with the laboratory and worked to draft the analytical report.  Port of Oakland Embarcadero Cove, Oakland, California – Ms. Robinson was a staff engineer on site to oversee the abandonment of existing groundwater monitoring wells and the installation and development of new groundwater monitoring wells. Her responsibilities also included annual groundwater sampling at the site that is known to have been impacted by VOCs, SVOCs, organochlorine pesticides, PCBs, dioxins, and furans from facilities that previously occupied the site that were known to have handled and stored solvents, refined petroleum products, wood, preservatives, pesticides, and herbicides. She also assisted the preparation of the annual report and five-year review for the site.
 Former Apartment Complex Close-Out, Carson, California – Ms. Robinson was responsible for the oversight of environmental field activities related to the demolition of an existing apartment complex for redevelopment. Field activities included asbestos and lead-based paint surveys and removal, hazardous waste packaging and disposal, geophysical surveys, and air monitoring.

Ms. Robinson also prepared close out reports and documents for the site.  Former Dry-Cleaning Facility, Santa Rosa, California – Ms. Robinson performed low flow groundwater sampling for quarterly reporting for a site containing both a dry cleaner and a residential apartment building to monitor impacts to the groundwater. The site is known to have existing soil and groundwater impacts from historic use and storage of petroleum products and other hazardous substances on surrounding sites.
 Wetland Restoration Project, San Francisco, California – Ms. Robinson reviewed contractor submittals, including dust control, decontamination, soil stabilization, and execution plans for compliance with the project specifications and regulatory requirements and prepared responses to requests for information for the restoration of 26.5 acres of tidal wetland habitat. The site is known to have soil containing naturally occurring asbestos, copper, lead, nickel, zinc, TPH, PAHs, pesticides, and PCBs and some metals impacting groundwater.  Environmental Site Assessments, Various Locations, California, Nevada, and Texas – Ms. Robinson has managed and conducted dozens of Phase I and Phase II environmental site assessments for commercial, industrial, and residential properties. Her responsibilities included complete site history reviews, identifying recognized environmental conditions and areas of potential concern, as well as field sampling and analysis to investigate potential impacts to soil and groundwater quality. Ms. Robinson assisted with the design of investigation programs, coordinated with field staff and subcontractors, and analyzed results to determine remedial actions. She also managed budgets, schedules, and client communication. Work was performed in general conformance with the ASTM environmental assessment standard and the U.S. EPA All Appropriate Inquiry guidelines. She has also conducted and completed preliminary endangerment assessments and obtained necessary permits for construction (NPDES, Rule 1166, etc.) on behalf of the developer to support the redevelopment activities.

Stormwater Monitoring and Compliance
 Machado Lake Nutrient TMDL Sampling, Torrance, California – Ms. Robinson manages the stormwater monitoring, sampling, and reporting for the City of Torrance in accordance with the Nicky G. Robinson, PE, QSD, QSP
Senior I Engineer
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provisions of the Machado Lake TMDL Special Studies Work Plan and the Machado Lake Eutrophic, Algae, Ammonia, and Odors (Nutrient) TMDL (established by the Los Angeles Regional Water Quality Control Board) to monitor nutrients, including nitrogen and phosphorous discharged from the City of Torrance to Machado Lake. She coordinates routine sampling activities and has been a field lead for activities that include rapid mobilization during wet weather and dry weather events on a monthly basis since 2012 and data collection from data loggers to calculate flow rate and discharge volume and to monitor storm events. Ms. Robinson is also responsible for maintaining a network of flow sensors in subsurface conveyances and storm drains to quantify hydrology of the storm drain system and determine mass-based discharge compliance. She maintains discharge flow and volume calculations for annual reporting and prepares the annual report document. Ms. Robinson is also responsible for communicating with the City of Torrance, maintaining the scheduling, and ensuring the project stays within budget.  Walteria Lake Monitoring Program for Nutrients and Toxics, Torrance, California – Ms.

Robinson manages a monitoring program for discharge from Walteria Lake in accordance with the Walteria Lake Monitoring Program Nutrients and Toxics Study Work Plan developed by the Los Angeles County Flood Control District. She coordinates with the City of Torrance to conduct field sampling activities during pumping events that discharge from Walteria Lake. Ms. Robinson also maintains and analyzes the analytical and flow data from the stormwater and dry weather flow in relation to the applicable nutrients and toxics TMDL waste load allocations to determine if the lake contributes or removes pollutant loading from the flow. She also maintains communication with the City of Torrance and manages the budget and reporting for the project.  Stormwater Basins Enhancement Project Monitoring and Reporting, Torrance, California – Ms. Robinson manages a project for the City of Torrance that includes stormwater sampling and flow measurements at various locations within three stormwater basins. The work is conducted in accordance with a plan approved by the Los Angeles Regional Water Quality Control Board. Ms.

Robinson manages communication with the client, field sampling events, the schedule, and the project budget.
 Nutrient TMDL Sampling, Peter Weber Equestrian Center, Rolling Hills Estates, California – Ms. Robinson manages a project involving the collection of stormwater samples and flow measurements to monitor nutrients, including nitrogen and phosphorous at an active equestrian facility in Rolling Hills Estates following facility upgrades designed to reduce surface water impacts.  Machado Lake Nutrient TMDL Sampling, Rolling Hills Estates, California – Ms. Robinson was the field lead for the collection of stormwater samples and flow measurements in accordance with the Palos Verdes Peninsula Coordinated Monitoring Plan and the Machado Lake Eutrophic, Algae, Ammonia, and Odors (Nutrient) TMDL (established by the Los Angeles RWQCB) to monitor nutrients, including nitrogen and phosphorous discharged from Rolling Hills Estates to Machado Lake. Sampling activities included rapid mobilization during wet weather and dry weather events on a monthly basis between 2012 and 2016 to collect samples from surface waters and confined conveyance systems. She calculated monthly averages of total nitrogen and total phosphorous and compared the results to waste load allocations to determine attainment status.  Anthropogenic Source Nutrient Assessment, Rolling Hills Estates, California – Ms. Robinson was a field lead for wet weather event stormwater sampling conducted for identification of nutrient sources to study nutrient load reduction at the Model Equestrian Center Project.

Nicky G. Robinson, PE, QSD, QSP
Senior I Engineer
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Regulatory Compliance
 National Pollutant Discharge Elimination System Monitoring, Marina del Rey, California – Ms. Robinson coordinates field activities associated with water quality sampling and analysis, flow data collection and analysis, and system operation and maintenance for a groundwater treatment system for VOCs, selenium, and metals prior to discharge to the storm drain. Her responsibilities also include preparing quarterly and annual monitoring reports for the Regional Water Quality Control Board per requirements in the monitoring and reporting program of the NPDES permit for the project. She currently manages the testing, maintenance, and reporting associated with the ongoing dewatering system.
 Environmental Audits, Various Locations, California – Ms. Robinson has performed and managed multiple environmental audits at several commercial and industrial facilities in California.

Her responsibilities included conducting interviews with current tenants, inspecting site facilities to determine environmental compliance or potential issues, and completing a final audit report of findings. She also managed budgets, schedules, and client communication.

EDUCATION
B.S., Civil and Environmental Engineering, University of California, Los Angeles, 2009

PROFESSIONAL HISTORY
Northgate Environmental Management, Inc., Senior Engineer, January 2020 to date Northgate Environmental Management, Inc., Project Engineer, January 2015 to December 2019 Northgate Environmental Management, Inc., Staff Engineer, August 2010 to December 2014 Incledon Consulting Group, Civil Engineer, July 2009 to July 2010 Incledon Kirk Engineers, Engineering Intern, June to September 2007 and June to September 2008

REGISTRATIONS / CERTIFICATIONS
Professional Engineer, California, No. 83985
Qualified SWPPP Developer (QSD) and Practitioner (QSP), No. 27442 OSHA 40-hour HAZWOPER
OSHA 8-Hour HAZWOPER, Supervisor

PRESENTATIONS
Brown, D., Dettle, J., and Robinson (Galloway), N., 2016. Update on City of Torrance Stormwater Quality Project, presentation, poster, and proceedings for the California Stormwater Quality Association’s 12th Annual Conference on Stormwater Evolution: Source to Resource, San Diego, California. September 12-14, 2016.

Robinson, N., and Willis, D. 2018. Minimizing Environmental Exposure by Incorporating Redevelopment Design in Remediation of Former Wood Treatment Facility, poster and proceedings for the Association for Environmental, Health and Sciences Foundation’s Annual West Coast Conference. March 19-22, 2018.

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DERRICK S. WILLIS

PRINCIPAL III
Mr. Willis has over 28 years’ experience serving both public sector and private clients in the Western United States and Canada on a wide variety of environmental projects. He has designed and implemented numerous site investigations, feasibility studies, client portfolio remedial cost scenarios, cleanup plans, and economic analyses involving contaminated soil, soil vapor, and groundwater as well as land reuse options. For the last several years, Derrick’s focus has been on formulating and facilitating closure and development strategies for large, complex, high profile, environmental projects for aerospace, industrial, and real estate development clients. He specializes in developing closure strategies that integrates remediation with redevelopment/land re-use. Derrick works with his client base to streamline the regulatory and clean-up process and successfully transforms projects for his clients from liabilities to assets. His expertise in fate and transport of chemicals in the environment, risk evaluation, and remedial technologies, regulatory requirements, combined with a keen understanding of client business objectives results in creative, efficient, and successful remediation/ revitalization projects.

REPRESENTATIVE EXPERIENCE
Site Investigation and Remediation
 Former Riverton Steel Facility, Southgate, California – Project manager on the investigation and remediation of a former steel production facility that is now currently adjacent to a residential development and a newly developed school. Developed remedial approach for lead impacted soil and concrete and air monitoring program (in accordance with SCAQMD Rule 1466) so that demo and concrete crushing operations were protective of adjacent receptors. CMS/RAP for remedial program, which dovetails remediation and development, was approved, and is currently being implemented.
 Baker Cold Storage, Port of Long Beach Pier B Facility, California – Serves as project manager for investigation, remediation and redevelopment support of a 12-acre former brownfield (wood treatment facility) in the Port of Long Beach. The site is impacted with pentachlorophenol (PCP), metals, VOCs, and dioxins/furans. In addition, tidally influenced groundwater is impacted with PCP and petroleum hydrocarbons and methane charged from oilfield operations. Mr. Willis evaluated investigation data, managed a groundwater investigation program and developed a remedial approach for soil and groundwater. Mr. Willis successfully streamlined the regulatory process by aggregating the remedial work plans including RCRA closure of a drip pad, into one encompassing work plan (Soil and Groundwater Response Plan), which included an air monitoring program during earthmoving of the contaminants on Site, and one Remedial Design Document ([RDD] that incorporated the facility design components into building mitigation design), and securing agency approvals on components of site construction concurrent with development of the RDD. Site was redeveloped with a 250,000 square-foot cold storage facility and is currently undergoing monitored natural attenuation for groundwater.

Derrick S. Willis
Principal III
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 Black Mountain Industrial Complex Remedial Design and Implementation, Nevada – Served as project manager for expedited investigation and remediation program for the Tronox industrial facility within the BMI Complex. Previously the world’s largest magnesium production facility during World War II, the site was later utilized for the manufacture of rocket fuel, other products, and most recently alkali and manganese oxide-based chemicals. Historical Industrial operations resulted in subsurface impacts from heavy metals, perchlorate, pesticides, chlorinated solvents, asbestos, radionuclides, and other chemicals. Developed streamlined investigation and remedial approach, prepared remedial plans, including a comprehensive air and dust monitoring program, and rapidly mobilized and managed a team of staff and subcontractors to remove approximately 800,000 cubic yards of soil from the site to meet commercial soil cleanup goals for direct contact exposure in an expedited timeframe.  Kimco Realty Corporation, multiple locations in California and Nevada, – Serves Principal-inCharge and program manager for investigation and remediation of several dry-cleaner sites in California (Cupertino, Daly City, Lakewood, LaVerne, Anaheim, Whittier) and Reno, Nevada.

Projects range from investigation of soil and soil vapor impact to remediation of soil, soil vapor and groundwater. Mr. Willis is responsible for developing remedial strategies, negotiating with regulatory agencies, and providing technical direction to staff in order to evaluate and remediate site impacts, and bring sites to regulatory closure.
 RREEF, Villa Marina Marketplace, Marina Del Rey, California ― Mr. Willis managed the design and installation of a groundwater treatment system to treat groundwater impacted from metals and selenium to meet NPDES discharge requirements for a basement dewatering system for a shopping center. He currently manages the operation, maintenance and reporting associated with the ongoing dewatering system.
 Hawaii Wood Preserving Company Treatment Facility, Maui, Hawaii – Served as project manager, for decommissioning, investigation, remediation, and closure for a former wood treatment facility to allow for redevelopment. The site operated as from 1972 to 2001 to treat lumber with PCP, chromated copper arsenate (CCA), permithrin, and disodium octoborate. Chemicals were profiled, all equipment was decontaminated and decommissioned, and verification sampling was conducted as part of decommissioning. A remedial investigation and remedial alternatives analysis was developed and implemented to investigate and develop a path-forward to closure. The implemented remedial approach consisted of site capping and long-term groundwater monitoring.  Lockheed Martin Former International Light Metals Facility, Torrance, California ― Served as project manager and principal investigator for a 67-acre aerospace facility where client objective was expedited redevelopment. The project included facility demolition, preparation and implementation of a Resource Conservation and Recovery Act (RCRA) closure plan for 11 permitted RCRA units, negotiations with the Department of Toxic Substance Control (DTSC), preparation of a RCRA Facility Assessment (RFA) (210 features identified that required intrusive investigation), implementation of a RCRA Facility Investigation (RFI) for soil and groundwater, preparation of a health-based risk assessment, and implementation of soil remediation. Site closure for soil was granted only three years after project initiation, in contrast to the normal six to eight year process, and has been used as an example by head DTSC officials as an example of industry and the regulatory community working together to achieve expedited site closures for property redevelopment purposes. Mr. Willis also developed strategy for groundwater investigation and remediation and negotiated the corrective action consent agreement (CACA) with DTSC.

Derrick S. Willis
Principal III
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 Playa Capital Corporation, Playa Vista Development Project, Los Angeles, California ― Mr. Willis served as program manager for the Playa Vista project, one of the largest and most visible brownfield development projects in the country. At 1,100 acres, it is the largest underway in Los Angeles County. His primary responsibility included environmental program management (including scoping, developing, scheduling, and tracking environmental activities for the development project), risk management (including developing and negotiating with agencies for appropriate cleanup criteria), remedial strategy/management (including development and implementation of pilot tests and oversight of investigation and remediation activities), agency/RP/buyer negotiations, consultant and contractor selection/oversight, coordination with Playa’s infrastructure group on the development/implementation of integrated remedial approach where appropriate, litigation support, data management, and transactional support with respect to the sale of remediated parcels.
 Project Manager, Confidential Client, Buena Park, California ― Served as project manager for multi-media remediation project at a commercial development in Buena Park, California. The site was a former food processing facility that was redeveloped into commercial offices and warehouse space. Evaluated the environmental liability for a Real Estate Investment Trust (REIT) that subsequently purchased the property, and managed remediation program in conjunction with site redevelopment.
 Project Manager, Brownfield Redevelopment, Torrance, California ― Served as project manager for site redevelopment project for a PacTrust. Evaluated environmental liabilities associated with a 12-acre parcel that was part of a butadiene plant (Del Amo Superfund Site) left undeveloped as a brownfield, and formulated a strategy to expedite regulatory closure and redevelopment. A comprehensive investigation was completed on the parcel, and the report submitted to the Environmental Protection Agency (EPA) for review. Successfully negotiated with EPA to conduct a non-Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) closure program. Conducted soil remediation program under EPA oversight in conjunction with site construction activities.
 Project Manager, Investigation and Remediation Program, Safety Kleen, Vancouver, British Columbia, Canada ― Managed remediation of former solvent recycler transfer stations in British Columbia and Alberta, Canada. Sites involved characterization and remediation of soil and perched groundwater zones. Assessed feasibility of vapor extraction for cleanup of vadose zone contamination, and designed and installed a dewatering system for perched water in former tank cavities and surficial saturated zone for Vancouver transfer station. Achieved regulatory site closure two years faster than previous consultant’s estimate.  Cupples Manufacturing, Investigation and Remediation Program, La Mirada, California ― Project manager for soil/groundwater characterization and remediation program at a truck maintenance facility in La Mirada, California. Conducted an underground storage tank and clarifier removal program in conjunction with site characterization activities. Implemented remediation of soil and groundwater impacted with petroleum hydrocarbons. Negotiated and received closure from Regional Water Quality Control Board (RWQCB).
 Alberta Environment, Abandoned Wood Treatment Sites, Various Locations, Alberta, Canada ― Project manager for the Wood Preserving Sites Characterization Program for Alberta Environment. Performed site characterization of four former wood preservation sites in Alberta, Canada. The sites had been used for many years for treating wood poles and railroad ties with a pentachlorophenol/diesel mixture. Soil and/or groundwater were impacted at the sites. Soil borings Derrick S. Willis
Principal III
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and groundwater monitoring wells were installed, and laboratory analysis of soil and groundwater was performed, to help determine the lateral and vertical migration of dissolved-phase hydrocarbons in the groundwater and dense non-aqueous phase liquids (DNAPLs) through glacial tills and several non-confining layers. Detailed drilling and sampling plans were necessary to ensure correct evaluation of vertical DNAPL migration. Aquifer tests were performed and receptor data were collected in order to formulate a quantitative assessment of both health-based and environmental risk.
 Texaco Refining and Marketing Inc., Investigation and Remediation Programs, Various Locations, Southern California ― Responsible for remediation programs at several petroleum retail outlets for Texaco in the southern California area. Projects included soil and groundwater investigation programs, underground storage tank (UST) removals, remedial design (including design and implementation of vapor extraction and aquifer tests), implementation of remedial program, and operation and maintenance of remediation systems. This included designing, specifying, permitting, and installing of all equipment (including piping, downhole pumps, off-gas treatment, and water treatment).
 Groundwater Contamination Investigation and Analysis, Technisol, Raymond, Alberta, Canada ― Conducted a groundwater investigation program at a solvent recycling facility located in southern Alberta, Canada. The program was implemented to determine the lateral and vertical extent of several species of chlorinated volatile organic compounds present in the confined aquifer beneath the facility. Aquifer testing was performed to estimate migration rates and to provide preliminary data for remedial action. Successfully negotiated with Alberta Environment (lead regulatory agency) for monitored natural attenuation approach.  Pier A Railyard, Port of Los Angeles, Los Angeles, California ― Managed a soil and groundwater investigation program at a Port of Los Angeles rail transfer yard. The objective of the project was to characterize previously identified polynuclear aromatic compounds, volatile organic compounds, and petroleum hydrocarbons in the soil and groundwater, and identify any regulated building materials in the site structures in order to facilitate an expedited redevelopment program.

The project was finished ahead of schedule and under budget.  Soil and Groundwater Remediation, Texaco, Various Locations, Southern California ― Conducted vapor extraction tests, performed data analysis, and generated recommendations for an industrial manufacturing facility to determine the viability of using vapor extraction for remediating chlorinated solvents, primarily tetrachloroethene (PCE), present in the soil beneath the facility. Each test was designed to assess air flow rates and vacuums, vertical interference and crossflow, radii of influence, potential for water upwelling, and effectiveness of vapor extraction in both vadose and capillary zones. Extracted vapors were collected to determine volatile organic compound concentrations. Data were used to determine well spacing and slotting intervals, optimum flow rate/vacuum combinations, extraction blower sizing, and vapor treatment equipment.  Texaco, Various Locations, Southern California― Responsible for preparation of South Coast Air Quality Management District (SCAQMD) permitting, installation, operation and maintenance of thermal and catalytic oxidizers/vapor extraction systems for the remediation of soil (containing petroleum hydrocarbons) beneath operating service stations.

Derrick S. Willis
Principal III
Resume www.ngem.com

Environmental Site Assessments
 RREEF, Multiple Sites, Southern California ― Mr. Willis serves as client director for RREEF on multiple projects including acquisition studies (which include mold, asbestos and indoor air quality surveys), tenant audit programs, soil remediation, groundwater investigation and remediation, third party oversight, agency negotiation, and mold and asbestos abatement programs.  Watson Land Company, Multiple Sites, Southern California ― Mr. Willis has directed over 40 acquisition-related due diligence investigations for Watson Land Company (Watson). Scope of work has included Phase I ESAs, soil and groundwater investigations, risk evaluations, agency negotiation, and aiding Watson in evaluating and quantifying the potential risk associated with recognized environmental concerns.
 Various Clients, Various Locations, Southern California ― Project manager for more than 200 Phase I environmental assessments (ESAs) for industrial facilities including aerospace, furniture and paper manufacturing factories; utility companies, vehicle and equipment maintenance facilities; and landfills as well former agricultural land. The objective of the ESAs was to evaluate and quantify potential liabilities associated with the acquisition and development of the properties.

Litigation Support
 Litigation Support, Confidential Client, City of Commerce, California – Conducted site review of historical records, developed and implemented soil, soil vapor, and groundwater investigation, and developed Site Conceptual Model (SCM) for former aerospace facility that was now developed as a multi-tenant warehouse. Successful in being able reconstruct historical SCM to show that environmental impacts were caused by historic aerospace operations from the 1940s to 1960s and not from the more recent tenant operations. Provided information and deposition for property management firm’s counsel.
 Mediation Support, Confidential Client, Los Angeles, California – Project manager for mediation support of insurance claim for cost reimbursement for handling, transportation and disposal of petroleum contaminated soil encountered during development of a high rise on a former hospital site. Work consisted of using photogrammetry and historical records to develop a volume of contaminated soil and expert witness report using spatial data analysis, rebuttal of expert witness reports, and expert witness testimony as part of mediation where a judgement was made in favor of our client for the full reimbursement cost.

EDUCATION
B.S., Geology, University of Alberta, Alberta, 1988
Derrick S. Willis
Principal III
Resume www.ngem.com

PROFESSIONAL HISTORY
Northgate Environmental Management, Principal, 2006 to date LFR Levine Fricke, Principal Geologist, 2002 – 2006
Integrated Environmental Services, Director of Operations/Senior Program Manager, 1999– 2002 ARCADIS Geraghty & Miller, Inc. Senior Geologist, 1993 – 1999 Environmental Design Corporation, Vice President, 1992
Environmental Science & Engineering, Inc., Staff Geologist, 1991 Terracon Geotechnique, Ltd., Geologist, 1989 – 1991
Contract Positions, Various Locations, Geologist, 1988

REGISTRATIONS
Certified Environmental Manager, Nevada, No. EM 2252
6700 E. PACIFIC COAST HIGHWAY MIXED-USE PROJECT

CITY OF LONG BEACH
Appendix
April 2023
Appendix F Hydrology and LID Report
6700 E. PACIFIC COAST HIGHWAY MIXED-USE PROJECT

CITY OF LONG BEACH
Appendix
PlaceWorks
This page intentionally left blank.

HYDROLOGY AND LID REPORT
FOR
MRNA
6700 PCH,
Long Beach, CA 90803
Prepared for:

City of Long Beach
Prepared by:

Labib Funk+ Associates
Structural | Shoring | Civil Consulting Engineers
319 Main St.

El Segundo, California 90245
LFA Job # 22029
December 6, 2022
Revised: January 30, 2023

TABLE OF CONTENTS

1.0 Project Summary

1.1 Existing Conditions

1.2 Proposed Conditions

2.0 Low Impact Development

2.1 Methodology

2.2 BMP Feasibility Screening

2.3 Proposed Treatment System

2.4 Hydromodification

3.0 Hydrologic Analysis

3.1 Methodology

3.2 Source Control BMP’s

3.3 Design Control BMP’s
Appendices
Appendix A – Existing Conditions
Appendix B – LID Calculations
Appendix C – BMP Exhibit
Appendix D – BMP Operation and Maintenance Plan (O&M)
Appendix E – Hydrocalc 24hr., 50 year
Appendix F – FEMA Flood Zone Map
Appendix G – Soils Report
Appendix H – NPDES permit MS 4 2020-105(Excerpts)
Appendix I – Long Beach LID Manual(Excerpts)

H y d r o l o g y a n d L I D R e p o r t 3 1 9 M a i n S t r e e t 6 7 0 0 P a c i f i c C o a s t H i g h w a y E l S e g u n d o , C a l i f o r n i a 9 0 2 4 5 L o n g B e a c h , C A 9 0 8 0 3 t : 2 1 3 / 2 3 9 9 7 0 0 P a g e 1 w w w . l a b i b f u n k . c o m
1 . 0 P R O J E C T S U M M A R Y
1 . 1 E x i s t i n g C o n d i t i o n s
The existing site is located at Lots 1 and 2 on the on the Southeast corner of Studebaker Road and Marina Dr, in Long Beach, California. The existing site contains of office buildings and an asphalt paved parking lot with some planting areas around the site, neither of which contains any apparent drainage structures in place.

The existing historic high groundwater for the site is on the order of 10 feet below the ground surface, according to the project geotechnical report (Appendix D). The proposed site is located in a Seismic Hazard Zone for liquefaction. The site is located in flood zone X which are a reduced flood zone area due to level.

1.2 Proposed Conditions
The proposed project is 6 story mixed-use structure over a two level of parking structure, featuring 281 residential units, amenity areas, retail, and parking. Stormwater runoff from the proposed building and site will be collected via roof drains and area drains and conveyed to flow-through planter boxes designed to capture the 0.75 in rain event.

H y d r o l o g y a n d L I D R e p o r t 3 1 9 M a i n S t r e e t 6 7 0 0 P a c i f i c C o a s t H i g h w a y E l S e g u n d o , C a l i f o r n i a 9 0 2 4 5 L o n g B e a c h , C A 9 0 8 0 3 t : 2 1 3 / 2 3 9 9 7 0 0 P a g e 2 w w w . l a b i b f u n k . c o m
2 . 0 L O W I M P A C T D E V E L O P M E N T ( L I D ) 2 . 1 M e t h o d o l o g y
The City of Long Beach Low Impact Development Standards were used to determine the appropriate storm water mitigation solution for the proposed project. The City of Long Beach LID Standards require the that the proposed project mitigate runoff volume produced from the 85th percentile 24-hour runoff event, or the volume of annual runoff to achieve 80 percent or more volume treatment, or the volume of runoff produced from a 0.75-inch storm event.

2.2 BMP Feasibility Screening
Infiltration at the proposed project site is not feasible due to the depth of the found groundwater per the Soils Report. (Appendix D). Therefore, the proposed project will use Permavoid stormwater planters which use a combination of capture and reuse and biofiltration as the BMP for mitigating stormwater runoff and meeting City of Long Beach LID standards.

2.3 Proposed Treatment System
Stormwater runoff from the proposed building and site will be collected via roof drains and area drains and conveyed to 15 planter boxes on Ground and podium levels with an area totaling to 6,149 sq. ft. The planter boxes being proposed are the Permavoid Planter boxes manufactured by ABT, inc. and designed to capture the 85th percentile rain event.

See Appendix A for Drainage Management Areas/ Area distribution for each planter.

2.4 Hydromodification
Hydromodification per NPDES permit no. MS4-2021-105 by California State Water Resource Control Board is defined as changes to the existing natural drainage structures affected by the proposed development. Furthermore, in the Long Beach LID manual section 3 it states to minimize the impacts to the natural drainage. Since our project is not proposing any changes and/or drains to natural drainage, measures are not applicable.

H y d r o l o g y a n d L I D R e p o r t 3 1 9 M a i n S t r e e t 6 7 0 0 P a c i f i c C o a s t H i g h w a y E l S e g u n d o , C a l i f o r n i a 9 0 2 4 5 L o n g B e a c h , C A 9 0 8 0 3 t : 2 1 3 / 2 3 9 9 7 0 0 P a g e 3 w w w . l a b i b f u n k . c o m
3 . 0 H Y D R O L O G I C A N A L Y S I S
3 . 1 M e t h o d o l o g y
The LA County Hydrology Maps were used to determine the peak flow runoff using Hydrocalc from the project site for both the Pre-Developed and Post-Developed conditions. The 50-yr storm event was selected for comparison which equates to 4.8 in/hr. for the project site. Since the project exceeds an Acre a SWPP would be required for the project. The proposed BMP’s should be designed and maintained per general permit and SWPP requirements. See below for the constraints and outputs that were modeled from Hydrocalc for our project site.

The constraints are shown below:

Design frequency = 50yr
Rainfall depth = 4.8in
Drainage Area = 2.62 Acres
Existing Conditions: The project site is relatively level with some steep slopes on the frontage by the PCH followed by an asphalt paved , parking area/ drive aisle. Area drains and catch basins in the lot are conveyed via storm drain piping to a curb inlet catch basin on Marina Dr. The existing conditions are shown in the survey in Appendix A.

Drainage areas BMP Percent impervious V50 Q50
Existing
conditions
Unknown 74% 31,486 cfs 4.52 cfs
Proposed
development
LID planters on
podium and at grade
89% 34,193 cfs 4.06 cfs
Proposed Conditions: The project proposes several BMP’s to reduce the discharge and capture the 85th percentile storm even. Runoff is collected in roof drains and area drains, which discharge into permavoid planters as a design control BMP. Overflow from the planters discharges into the site storm drain piping which eventually empties to the same curb inlet catch basin on Marine Dr as the existing condition. Overall, the proposed BMP’s would capture the runoff from the roof and reduce the discharge from the project site.

See Appendix B for LID calculations/DMA’s.

See Appendix C for BMP Exhibit (Proposed Conditions)
See Appendix E for 24hr. 50yr Hydrocalc results.

See Appendix F for FEMA flood zone maps.

H y d r o l o g y a n d L I D R e p o r t 3 1 9 M a i n S t r e e t 6 7 0 0 P a c i f i c C o a s t H i g h w a y E l S e g u n d o , C a l i f o r n i a 9 0 2 4 5 L o n g B e a c h , C A 9 0 8 0 3 t : 2 1 3 / 2 3 9 9 7 0 0 P a g e 4 w w w . l a b i b f u n k . c o m
3 . 2 S o u r c e c o n t r o l B M P ’ s
Per Long Beach LID manual, Source control measures are recommended as a lowtechnology practice to mitigate runoff prior to entering a BMP or flowing offsite. These measures are defined in section 3 of the Long Beach LID Manual. The following sitespecific source control measures are proposed for the project.  S-1 (Storm drain message and signage) would be provided at curb face and on catch basins in the public ROW.
 S-2 (Outdoor material storage area design) Storage will be provided inside the building.
 S-3 (Outdoor trash and waste handling area design) will be provided inside the building.
 S-4 (Outdoor loading/unloading dock area design) will be provided inside the building.
 S-5 (Outdoor repair/maintenance bay design)

3 . 3 D e s i g n c o n t r o l B M P ’ s
Per Long Low impact development manual. The onsite BMP’s in the order of feasibility are as follows:
 Infiltration
 Capture and Use
 Offsite Mitigation
Since infiltration is deemed infeasible due to the depth of found groundwater per soils report (Appendix D), We opted with capture and use with Permavoid Planter Boxes to treat the 85th percentile storm event. The calculations for the planters can be seen in Appendix B. The planters would be located at grade and at the podium level. Storm water would be conveyed through area drains and/or roof downspouts to these planters for treatment. The implementation of these measures increases the time of concentration reducing the overall runoff discharge rate from the site.

See Appendix E for Hydrology Calculations. See Appendix C for a DMA Exhibit.

H y d r o l o g y a n d L I D R e p o r t 3 1 9 M a i n S t r e e t 6 7 0 0 P a c i f i c C o a s t H i g h w a y E l S e g u n d o , C a l i f o r n i a 9 0 2 4 5 L o n g B e a c h , C A 9 0 8 0 3 t : 2 1 3 / 2 3 9 9 7 0 0 P a g e 5 w w w . l a b i b f u n k . c o m

APPENDIX A

EXISTING CONDITIONS
STUDEBAKER RD. PARCEL MAP NO. 11290 147/94-95 PARCEL 1 4 5 5 7 7 MARINA DR. 7 6 62 PACIFIC COAST HIGHWAY ALTA/NSPS LAND TITLE SURVEY PROJECT # CHECKED BY DRAWN BY 700 FLOWER ST., Suite 2100 Los Angeles, CA 90017 O: 213.418.0201 F: 213.266.5294 www.kpff.com DATE PREPARED MR. JACOB STONE 5000 EAST SPRING STREET, SUITE 500 LONG BEACH, CA 90815 2100904CJ AA 01/14/2022 HOLLAND PARTNER GROUP COMMENTS (PER CHICAGO TITLE COMPANY POLICY No. OR DER No. 00164329-002-WK1-JS9 DATED OCTOBER 19,2021 AT 7:30 A.M.) EXCEPTIONS (PER CHICAGO TITLE COMPANY POLICY No. OR DER No. 00164329-002-WK1-JS9 DATED OCTOBER 19,2021 AT 7:30 A.M.) LEGAL DESCRIPTION SURVEYOR'S NOTES SURVEYOR'S CERTIFICATE ABBREVIATIONS LEGEND 01/18/2022 STUDEBAKER RD.

PARCEL MAP NO. 11290 147/94-95 PARCEL 1
MARINA DR.

PACIFIC COAST HIGHWAY
PROJECT #

CHECKED BY

DRAWN BY
700 FLOWER ST., Suite 2100
Los Angeles, CA 90017
O: 213.418.0201
F: 213.266.5294
www.kpff.com

DATE PREPARED

JACOB STONE
5000 EAST SPRING STREET, SUITE 500
LONG BEACH, CA 90815
2100904
CJ
AA
11/30/2021

HOLLAND PARTNER GROUP

DIG ALERT

ABBREVIATIONS LEGEND

LINETYPES

ALTA/NSPS LAND TITLE SURVEY

H y d r o l o g y a n d L I D R e p o r t 3 1 9 M a i n S t r e e t 6 7 0 0 P a c i f i c C o a s t H i g h w a y E l S e g u n d o , C a l i f o r n i a 9 0 2 4 5 L o n g B e a c h , C A 9 0 8 0 3 t : 2 1 3 / 2 3 9 9 7 0 0 P a g e 6 w w w . l a b i b f u n k . c o m

APPENDIX B
LID Calculation
PV323189 Date:
6700 PCH, Long Beach ECD: 6 23

0.75 inches
DrainageAreaImperviousAreaCatchment AreaDesign Capture Vol.Required Planter AreaCapture & Use VolumeBiofiltration VolumeMinimum Plant FactorSoil DepthPonding Depth Planter Depth (Interior) At Ai Acat Vcap Ap Vcu Vbf PF Dsoil Dpond Dip
(ft²) (%) (ft²) (ft³) (ft²) (ft³) (ft³) --- (in.) (in.) (in.) 2,215 100.0% 1,993 125 90 84 60 0.44 18.0 3.0 36.0 150x2 68 68 16 340 12 5.5 11,684 100.0% 10,515 657 476 446 317.6 0.44 18.0 3.0 36.0 150x2 352 352 80 1,760 59 29.1 4,746 100.0% 4,271 267 194 181 129 0.44 18.0 3.0 36.0 150x2 144 144 33 720 24 11.8 11,232 100.0% 10,109 632 458 428 305.3 0.44 18.0 3.0 36.0 150x2 338 338 77 1,690 57 28.0 4,023 100.0% 3,621 226 164 153 109.4 0.44 18.0 3.0 36.0 150x2 122 122 28 610 21 10.0 4,881 100.0% 4,393 275 199 186 132.7 0.44 18.0 3.0 36.0 150x2 148 148 34 740 25 12.2 4,588 100.0% 4,129 258 187 175 124.7 0.44 18.0 3.0 36.0 150x2 138 138 32 690 23 11.4 2,011 100.0% 1,810 113 82 77 54.7 0.44 18.0 3.0 36.0 150x2 62 62 14 310 11 5.0 30,915 100.0% 27,824 1,739 1,261 1,179 840.5 0.44 18.0 3.0 36.0 150x2 930 930 211 4,650 155 77.0 9,763 100.0% 8,786 549 398 372 265.4 0.44 18.0 3.0 36.0 150x2 294 294 67 1,470 49 24.3 19,051 100.0% 17,146 1,072 777 726 517.9 0.44 18.0 3.0 36.0 150x2 574 574 130 2,870 96 47.5 7,887 100.0% 7,098 444 322 301 214.4 0.44 18.0 3.0 36.0 150x2 238 238 54 1,190 40 19.7 9,627 100.0% 8,664 542 393 367 261.7 0.44 18.0 3.0 36.0 150x2 290 290 66 1,450 49 24.0 6,599 100.0% 5,939 371 269 252 179.4 0.44 18.0 3.0 36.0 150x2 200 200 46 1,000 34 16.4 9,740 100.0% 8,766 548 397 371 264.8 0.44 18.0 3.0 36.0 150x2 294 294 67 1,470 49 24.3 138,961 --- 125,065 7,817 5,667 5,298 3,778 --- --- --- --- --- 0 0 4,192 0 0 4,192 955 20,960 704 346.2 Permavoid Los Angeles LID Table 1.1 REF: 236PV323189h8370M Permavoid Planter Soil Requirements (non-traffic loading):
∙ 75% (+/- 5%) by weight shall consist of sand meeting the following:
- For soil depths of 6 to 12 inches, average particle size shall be 500mm (0.020 in.) - For soil depths of 12 to 24 inches, average particle size shall be 300mm (0.012 in.) ∙ Soils shall have a uniformity coefficient of 4.0 or less. ∙ Soils shall have less than 10% fines (passing 200 sieve) by weight. ∙ Soils used for biofiltration shall meet "Attachment H. Biofiltration / Biofiltration Design Criteria " as provided by the California Regional Water Quality Control Board.

Material Summary
Est. Soil Volume (CY)
Tie
Connectors
CUB-9
CUB-10
CUB-1
CUB-2
CUB-3
CUB-4
CUB-5
CUB-6
CUB-7
CUB-8
Design Summary
Shear
Connectors
Wicking Geotex.
(Roll-ft)
85HD PV150
Total
CUB-15
CUB-11
CUB-12
CUB-13
CUB-14
Los Angeles Low Impact Development
BMP Design & Material Summary
1/25/2023

LID BMP
ID - #
Project Number:

Street Address:
85th Rainfall Depth:

Capillary Cones
(Quantity)
System
Type
Permavoid Units
(Quantity)
36/60+
24/30 36/90 23/160TPairs 85s
6700 PCH, Long Beach Date:

PV323189
CUB 1
Acat 1,993.2 ft² Ap
D85 0.0625 ft Vcu
Dsoil 18.0 in. Vbf
Wa 0% % PF
Dpond 3.0 in. Dip
Ksat 5.0 in/hr
SF 2.0 ft³ #
Tf 2.0 hrs PV-150 #
150x2 11.8 in. 23/160 T #
Vpv 95 % Cap. Tex. #
ETo7 21.7 in. By Others 6
IE 0.85
Calculate the Design Capture Volume (Vcap):

Vcap = D85 ∙ Acat
Vcap = 0.0625ft ∙ 1993.2ft²
# Vcap = 124.6 ft³
Calculate the Permavoid Capture & Use Depth (Dcu):

Dcu = (150x2 ∙ Vpv) + (Dsoil ∙ Wa)
Dcu = (11.8in. ∙ 95%) + (18in. ∙ 0%)
# Dcu = 11.22 in. = 0.935 ft
# Calculate the Planter Area (Ap):
# Ap = 90.3 ft²
Calculate the Capture & Use Volume (Vcu):

Vcu = Ap ∙ Dcu
Vcu = 90.3 ft² ∙ 0.935ft
# Vcu = 84.4 ft³
Calculate the Biofiltration Volume (Vbf):

Vbf = 1.5 ∙ (Vcap - Vcu)
Vbf = 1.5 ∙ (124.6 ft³ - 84.4 ft³)
# Vbf = 60.2 ft³
Calculate the Minimum Area Required (Amin):

Amin = Vbf / [Tf ∙ (Ksat/SF) + Dpond]
Amin = 60.2 ft³ / {[2.0hrs ∙ (5.0in/hr / 2.0) + 3in.] / 12ipf} # Amin = 90.3 ft²
Check the Planter Area (Ap) vs. the Minimum Area Required (Amin):

Ap vs. Amin

90.3 ft² vs. 90.3 ft²

90.3 ft² = 90.3 ft²
Ap = Amin ✓ - CHECKED
Calculate the Minimum Required Plant Factor (PF):

PF = (Vcu ∙ IE) / (ETo7 ∙ Ap)
PF = (84.4 ft³ ∙ 0.85) / [(21.7in. / 12ipf) ∙ 90.3 ft²] # PF = 0.44
Calculate the 7-Month Estimated Total Water Use (ETWU-7):

ETWU-7 = (ETo7 ∙ PF ∙ Ap) / IE
ETWU-7 = [(21.7in. / 12ipf) ∙ 0.44 ∙ 90.3 ft²] / 0.85
# ETWU-7 = 84.4 ft³
Check the Capture & Use Volume (Vcu) vs. the 7-Month Estimated Total Water Usage (ETWU-7):

Vcu vs. ETWU-7

84.4 ft³ vs. 84.4 ft³
# 84.4 ft³ = 84.4 ft³
Vcu = ETWU-7 ✓ - CHECKED
Planter ID Number: Design Summary
Los Angeles Low Impact Development
Capture & Use / Biofiltration Planter Design Calculations Project Name: 1/25/2023
Project Number:

Catchment Area: Planter Area: 90.3 ft²
85th Percentile Storm Depth: Capture & Use Volume: 84.4 ft³ Soil Depth: Biofiltration Volume: 60.2 ft³
Soil Available Water: Plant Factor (min.): 0.44
Ponding Depth: Internal Planter Depth: 36 in.

Soil Saturated Infiltration Rate:

Safety Factor: Material Requirements
Time To Fill: Permavoid Units: 68 Units
Permavoid System Depth: Capillary Cones: 68 Pairs
Permavoid Voids: Wicking Geotextile Length: 12 - 15 ft
7-Month Reference Evapotranspiration: Planting Media: 5.5 CY Permavoid Irrigation Efficiency: *NOTES: Quantities are for estimation only. Fluctuations in material quatities will occur based on the precise configuration. Contact ABT-Permavoid for planting media recommendations based on soil depth. 6700 PCH, Long Beach Date:

PV323189
CUB 2
Acat 10,515 ft² Ap
D85 0.0625 ft Vcu
Dsoil 18.0 in. Vbf
Wa 0% % PF
Dpond 3.0 in. Dip
Ksat 5.0 in/hr
SF 2.0 ft³ #
Tf 2.0 hrs PV-150 #
150x2 11.8 in. 23/160 T #
Vpv 95 % Cap. Tex. #
ETo7 21.7 in. By Others #
IE 0.85
Calculate the Design Capture Volume (Vcap):

Vcap = D85 ∙ Acat
Vcap = 0.0625ft ∙ 10515.3ft²
# Vcap = 657.2 ft³
Calculate the Permavoid Capture & Use Depth (Dcu):

Dcu = (150x2 ∙ Vpv) + (Dsoil ∙ Wa)
Dcu = (11.8in. ∙ 95%) + (18in. ∙ 0%)
# Dcu = 11.22 in. = 0.935 ft
Calculate the Planter Area (Ap):
# Ap = 476.4 ft²
Calculate the Capture & Use Volume (Vcu):

Vcu = Ap ∙ Dcu
Vcu = 476.4 ft² ∙ 0.935ft
# Vcu = 445.5 ft³
Calculate the Biofiltration Volume (Vbf):

Vbf = 1.5 ∙ (Vcap - Vcu)
Vbf = 1.5 ∙ (657.2 ft³ - 445.5 ft³)
# Vbf = 317.6 ft³
Calculate the Minimum Area Required (Amin):

Amin = Vbf / [Tf ∙ (Ksat/SF) + Dpond]
Amin = 317.6 ft³ / {[2.0hrs ∙ (5.0in/hr / 2.0) + 3in.] / 12ipf} # Amin = 476.4 ft²
Check the Planter Area (Ap) vs. the Minimum Area Required (Amin):

Ap vs. Amin
476.4 ft² vs. 476.4 ft²
476.4 ft² = 476.4 ft²
Ap = Amin ✓ - CHECKED
Calculate the Minimum Required Plant Factor (PF):

PF = (Vcu ∙ IE) / (ETo7 ∙ Ap)
PF = (445.5 ft³ ∙ 0.85) / [(21.7in. / 12ipf) ∙ 476.4 ft²] # PF = 0.44
Calculate the 7-Month Estimated Total Water Use (ETWU-7):

ETWU-7 = (ETo7 ∙ PF ∙ Ap) / IE
ETWU-7 = [(21.7in. / 12ipf) ∙ 0.44 ∙ 476.4 ft²] / 0.85
# ETWU-7 = 445.5 ft³
Check the Capture & Use Volume (Vcu) vs. the 7-Month Estimated Total Water Usage (ETWU-7):

Vcu vs. ETWU-7
445.5 ft³ vs. 445.5 ft³
# 445.5 ft³ = 445.5 ft³
Vcu = ETWU-7 ✓ - CHECKED
Planter ID Number: Design Summary
Los Angeles Low Impact Development
Capture & Use / Biofiltration Planter Design Calculations Project Name: 1/25/2023
Project Number:

Catchment Area: Planter Area: 476.4 ft²
85th Percentile Storm Depth: Capture & Use Volume: 445.5 ft³ Soil Depth: Biofiltration Volume: 317.6 ft³
Soil Available Water: Plant Factor (min.): 0.44
Ponding Depth: Internal Planter Depth: 36 in.

Soil Saturated Infiltration Rate:

Safety Factor: Material Requirements
Time To Fill: Permavoid Units: 352 Units
Permavoid System Depth: Capillary Cones: 352 Pairs
Permavoid Voids: Wicking Geotextile Length: 58 - 80 ft
7-Month Reference Evapotranspiration: Planting Media: 29.1 CY Permavoid Irrigation Efficiency: *NOTES: Quantities are for estimation only. Fluctuations in material quatities will occur based on the precise configuration. Contact ABT-Permavoid for planting media recommendations based on soil depth. 6700 PCH, Long Beach Date:

PV323189
CUB 3
Acat 4,271 ft² Ap
D85 0.0625 ft Vcu
Dsoil 18.0 in. Vbf
Wa 0% % PF
Dpond 3.0 in. Dip
Ksat 5.0 in/hr
SF 2.0 ft³ #
Tf 2.0 hrs PV-150 #
150x2 11.8 in. 23/160 T #
Vpv 95 % Cap. Tex. #
ETo7 21.7 in. By Others #
IE 0.85
Calculate the Design Capture Volume (Vcap):

Vcap = D85 ∙ Acat
Vcap = 0.0625ft ∙ 4271.2ft²
# Vcap = 267 ft³
Calculate the Permavoid Capture & Use Depth (Dcu):

Dcu = (150x2 ∙ Vpv) + (Dsoil ∙ Wa)
Dcu = (11.8in. ∙ 95%) + (18in. ∙ 0%)
# Dcu = 11.22 in. = 0.935 ft
Calculate the Planter Area (Ap):
# Ap = 193.5 ft²
Calculate the Capture & Use Volume (Vcu):

Vcu = Ap ∙ Dcu
Vcu = 193.5 ft² ∙ 0.935ft
# Vcu = 180.9 ft³
Calculate the Biofiltration Volume (Vbf):

Vbf = 1.5 ∙ (Vcap - Vcu)
Vbf = 1.5 ∙ (267 ft³ - 180.9 ft³)
# Vbf = 129 ft³
Calculate the Minimum Area Required (Amin):

Amin = Vbf / [Tf ∙ (Ksat/SF) + Dpond]
Amin = 129 ft³ / {[2.0hrs ∙ (5.0in/hr / 2.0) + 3in.] / 12ipf} # Amin = 193.5 ft²
Check the Planter Area (Ap) vs. the Minimum Area Required (Amin):

Ap vs. Amin
193.5 ft² vs. 193.5 ft²
193.5 ft² = 193.5 ft²
Ap = Amin ✓ - CHECKED
Calculate the Minimum Required Plant Factor (PF):

PF = (Vcu ∙ IE) / (ETo7 ∙ Ap)
PF = (180.9 ft³ ∙ 0.85) / [(21.7in. / 12ipf) ∙ 193.5 ft²] # PF = 0.44
Calculate the 7-Month Estimated Total Water Use (ETWU-7):

ETWU-7 = (ETo7 ∙ PF ∙ Ap) / IE
ETWU-7 = [(21.7in. / 12ipf) ∙ 0.44 ∙ 193.5 ft²] / 0.85
# ETWU-7 = 180.9 ft³
Check the Capture & Use Volume (Vcu) vs. the 7-Month Estimated Total Water Usage (ETWU-7):

Vcu vs. ETWU-7
180.9 ft³ vs. 180.9 ft³
# 180.9 ft³ = 180.9 ft³
Vcu = ETWU-7 ✓ - CHECKED
Planter ID Number: Design Summary
Los Angeles Low Impact Development
Capture & Use / Biofiltration Planter Design Calculations Project Name: 1/25/2023
Project Number:

Catchment Area: Planter Area: 193.5 ft²
85th Percentile Storm Depth: Capture & Use Volume: 180.9 ft³ Soil Depth: Biofiltration Volume: 129 ft³
Soil Available Water: Plant Factor (min.): 0.44
Ponding Depth: Internal Planter Depth: 36 in.

Soil Saturated Infiltration Rate:

Safety Factor: Material Requirements
Time To Fill: Permavoid Units: 144 Units
Permavoid System Depth: Capillary Cones: 144 Pairs
Permavoid Voids: Wicking Geotextile Length: 25 - 32 ft
7-Month Reference Evapotranspiration: Planting Media: 11.8 CY Permavoid Irrigation Efficiency: *NOTES: Quantities are for estimation only. Fluctuations in material quatities will occur based on the precise configuration. Contact ABT-Permavoid for planting media recommendations based on soil depth. 6700 PCH, Long Beach Date:

PV323189
CUB 4
Acat 10,109 ft² Ap
D85 0.0625 ft Vcu
Dsoil 18.0 in. Vbf
Wa 0% % PF
Dpond 3.0 in. Dip
Ksat 5.0 in/hr
SF 2.0 ft³ #
Tf 2.0 hrs PV-150 #
150x2 11.8 in. 23/160 T #
Vpv 95 % Cap. Tex. #
ETo7 21.7 in. By Others #
IE 0.85
Calculate the Design Capture Volume (Vcap):

Vcap = D85 ∙ Acat
Vcap = 0.0625ft ∙ 10108.5ft²
# Vcap = 631.8 ft³
Calculate the Permavoid Capture & Use Depth (Dcu):

Dcu = (150x2 ∙ Vpv) + (Dsoil ∙ Wa)
Dcu = (11.8in. ∙ 95%) + (18in. ∙ 0%)
# Dcu = 11.22 in. = 0.935 ft
Calculate the Planter Area (Ap):
# Ap = 458 ft²
Calculate the Capture & Use Volume (Vcu):

Vcu = Ap ∙ Dcu
Vcu = 458 ft² ∙ 0.935ft
# Vcu = 428.2 ft³
Calculate the Biofiltration Volume (Vbf):

Vbf = 1.5 ∙ (Vcap - Vcu)
Vbf = 1.5 ∙ (631.8 ft³ - 428.2 ft³)
# Vbf = 305.3 ft³
Calculate the Minimum Area Required (Amin):

Amin = Vbf / [Tf ∙ (Ksat/SF) + Dpond]
Amin = 305.3 ft³ / {[2.0hrs ∙ (5.0in/hr / 2.0) + 3in.] / 12ipf} # Amin = 458 ft²
Check the Planter Area (Ap) vs. the Minimum Area Required (Amin):

Ap vs. Amin
458 ft² vs. 458 ft²
458 ft² = 458 ft²
Ap = Amin ✓ - CHECKED
Calculate the Minimum Required Plant Factor (PF):

PF = (Vcu ∙ IE) / (ETo7 ∙ Ap)
PF = (428.2 ft³ ∙ 0.85) / [(21.7in. / 12ipf) ∙ 458 ft²] # PF = 0.44
Calculate the 7-Month Estimated Total Water Use (ETWU-7):

ETWU-7 = (ETo7 ∙ PF ∙ Ap) / IE
ETWU-7 = [(21.7in. / 12ipf) ∙ 0.44 ∙ 458 ft²] / 0.85
# ETWU-7 = 428.2 ft³
Check the Capture & Use Volume (Vcu) vs. the 7-Month Estimated Total Water Usage (ETWU-7):

Vcu vs. ETWU-7
428.2 ft³ vs. 428.2 ft³
# 428.2 ft³ = 428.2 ft³
Vcu = ETWU-7 ✓ - CHECKED
Planter ID Number: Design Summary
Los Angeles Low Impact Development
Capture & Use / Biofiltration Planter Design Calculations Project Name: 1/25/2023
Project Number:

Catchment Area: Planter Area: 458 ft²
85th Percentile Storm Depth: Capture & Use Volume: 428.2 ft³ Soil Depth: Biofiltration Volume: 305.3 ft³
Soil Available Water: Plant Factor (min.): 0.44
Ponding Depth: Internal Planter Depth: 36 in.

Soil Saturated Infiltration Rate:

Safety Factor: Material Requirements
Time To Fill: Permavoid Units: 338 Units
Permavoid System Depth: Capillary Cones: 338 Pairs
Permavoid Voids: Wicking Geotextile Length: 56 - 77 ft
7-Month Reference Evapotranspiration: Planting Media: 28 CY Permavoid Irrigation Efficiency: *NOTES: Quantities are for estimation only. Fluctuations in material quatities will occur based on the precise configuration. Contact ABT-Permavoid for planting media recommendations based on soil depth. 6700 PCH, Long Beach Date:

PV323189
CUB 5
Acat 3,621 ft² Ap
D85 0.0625 ft Vcu
Dsoil 18.0 in. Vbf
Wa 0% % PF
Dpond 3.0 in. Dip
Ksat 5.0 in/hr
SF 2.0 ft³ #
Tf 2.0 hrs PV-150 #
150x2 11.8 in. 23/160 T #
Vpv 95 % Cap. Tex. #
ETo7 21.7 in. By Others #
IE 0.85
Calculate the Design Capture Volume (Vcap):

Vcap = D85 ∙ Acat
Vcap = 0.0625ft ∙ 3620.7ft²
# Vcap = 226.3 ft³
Calculate the Permavoid Capture & Use Depth (Dcu):

Dcu = (150x2 ∙ Vpv) + (Dsoil ∙ Wa)
Dcu = (11.8in. ∙ 95%) + (18in. ∙ 0%)
# Dcu = 11.22 in. = 0.935 ft
Calculate the Planter Area (Ap):
# Ap = 164.1 ft²
Calculate the Capture & Use Volume (Vcu):

Vcu = Ap ∙ Dcu
Vcu = 164.1 ft² ∙ 0.935ft
# Vcu = 153.4 ft³
Calculate the Biofiltration Volume (Vbf):

Vbf = 1.5 ∙ (Vcap - Vcu)
Vbf = 1.5 ∙ (226.3 ft³ - 153.4 ft³)
# Vbf = 109.4 ft³
Calculate the Minimum Area Required (Amin):

Amin = Vbf / [Tf ∙ (Ksat/SF) + Dpond]
Amin = 109.4 ft³ / {[2.0hrs ∙ (5.0in/hr / 2.0) + 3in.] / 12ipf} # Amin = 164.1 ft²
Check the Planter Area (Ap) vs. the Minimum Area Required (Amin):

Ap vs. Amin
164.1 ft² vs. 164.1 ft²
164.1 ft² = 164.1 ft²
Ap = Amin ✓ - CHECKED
Calculate the Minimum Required Plant Factor (PF):

PF = (Vcu ∙ IE) / (ETo7 ∙ Ap)
PF = (153.4 ft³ ∙ 0.85) / [(21.7in. / 12ipf) ∙ 164.1 ft²] # PF = 0.44
Calculate the 7-Month Estimated Total Water Use (ETWU-7):

ETWU-7 = (ETo7 ∙ PF ∙ Ap) / IE
ETWU-7 = [(21.7in. / 12ipf) ∙ 0.44 ∙ 164.1 ft²] / 0.85
# ETWU-7 = 153.4 ft³
Check the Capture & Use Volume (Vcu) vs. the 7-Month Estimated Total Water Usage (ETWU-7):

Vcu vs. ETWU-7
153.4 ft³ vs. 153.4 ft³
# 153.4 ft³ = 153.4 ft³
Vcu = ETWU-7 ✓ - CHECKED
Planter ID Number: Design Summary
Los Angeles Low Impact Development
Capture & Use / Biofiltration Planter Design Calculations Project Name: 1/25/2023
Project Number:

Catchment Area: Planter Area: 164.1 ft²
85th Percentile Storm Depth: Capture & Use Volume: 153.4 ft³ Soil Depth: Biofiltration Volume: 109.4 ft³
Soil Available Water: Plant Factor (min.): 0.44
Ponding Depth: Internal Planter Depth: 36 in.

Soil Saturated Infiltration Rate:

Safety Factor: Material Requirements
Time To Fill: Permavoid Units: 122 Units
Permavoid System Depth: Capillary Cones: 122 Pairs
Permavoid Voids: Wicking Geotextile Length: 21 - 28 ft
7-Month Reference Evapotranspiration: Planting Media: 10 CY Permavoid Irrigation Efficiency: *NOTES: Quantities are for estimation only. Fluctuations in material quatities will occur based on the precise configuration. Contact ABT-Permavoid for planting media recommendations based on soil depth. 6700 PCH, Long Beach Date:

PV323189
CUB 6
Acat 4,393 ft² Ap
D85 0.0625 ft Vcu
Dsoil 18.0 in. Vbf
Wa 0% % PF
Dpond 3.0 in. Dip
Ksat 5.0 in/hr
SF 2.0 ft³ #
Tf 2.0 hrs PV-150 #
150x2 11.8 in. 23/160 T #
Vpv 95 % Cap. Tex. #
ETo7 21.7 in. By Others #
IE 0.85
Calculate the Design Capture Volume (Vcap):

Vcap = D85 ∙ Acat
Vcap = 0.0625ft ∙ 4392.9ft²
# Vcap = 274.6 ft³
Calculate the Permavoid Capture & Use Depth (Dcu):

Dcu = (150x2 ∙ Vpv) + (Dsoil ∙ Wa)
Dcu = (11.8in. ∙ 95%) + (18in. ∙ 0%)
# Dcu = 11.22 in. = 0.935 ft
Calculate the Planter Area (Ap):
# Ap = 199 ft²
Calculate the Capture & Use Volume (Vcu):

Vcu = Ap ∙ Dcu
Vcu = 199 ft² ∙ 0.935ft
# Vcu = 186.1 ft³
Calculate the Biofiltration Volume (Vbf):

Vbf = 1.5 ∙ (Vcap - Vcu)
Vbf = 1.5 ∙ (274.6 ft³ - 186.1 ft³)
# Vbf = 132.7 ft³
Calculate the Minimum Area Required (Amin):

Amin = Vbf / [Tf ∙ (Ksat/SF) + Dpond]
Amin = 132.7 ft³ / {[2.0hrs ∙ (5.0in/hr / 2.0) + 3in.] / 12ipf} # Amin = 199 ft²
Check the Planter Area (Ap) vs. the Minimum Area Required (Amin):

Ap vs. Amin
199 ft² vs. 199 ft²
199 ft² = 199 ft²
Ap = Amin ✓ - CHECKED
Calculate the Minimum Required Plant Factor (PF):

PF = (Vcu ∙ IE) / (ETo7 ∙ Ap)
PF = (186.1 ft³ ∙ 0.85) / [(21.7in. / 12ipf) ∙ 199 ft²] # PF = 0.44
Calculate the 7-Month Estimated Total Water Use (ETWU-7):

ETWU-7 = (ETo7 ∙ PF ∙ Ap) / IE
ETWU-7 = [(21.7in. / 12ipf) ∙ 0.44 ∙ 199 ft²] / 0.85
# ETWU-7 = 186.1 ft³
Check the Capture & Use Volume (Vcu) vs. the 7-Month Estimated Total Water Usage (ETWU-7):

Vcu vs. ETWU-7
186.1 ft³ vs. 186.1 ft³
# 186.1 ft³ = 186.1 ft³
Vcu = ETWU-7 ✓ - CHECKED
Planter ID Number: Design Summary
Los Angeles Low Impact Development
Capture & Use / Biofiltration Planter Design Calculations Project Name: 1/25/2023
Project Number:

Catchment Area: Planter Area: 199 ft²
85th Percentile Storm Depth: Capture & Use Volume: 186.1 ft³ Soil Depth: Biofiltration Volume: 132.7 ft³
Soil Available Water: Plant Factor (min.): 0.44
Ponding Depth: Internal Planter Depth: 36 in.

Soil Saturated Infiltration Rate:

Safety Factor: Material Requirements
Time To Fill: Permavoid Units: 148 Units
Permavoid System Depth: Capillary Cones: 148 Pairs
Permavoid Voids: Wicking Geotextile Length: 25 - 33 ft
7-Month Reference Evapotranspiration: Planting Media: 12.2 CY Permavoid Irrigation Efficiency: *NOTES: Quantities are for estimation only. Fluctuations in material quatities will occur based on the precise configuration. Contact ABT-Permavoid for planting media recommendations based on soil depth. 6700 PCH, Long Beach Date:

PV323189
CUB 7
Acat 4,129 ft² Ap
D85 0.0625 ft Vcu
Dsoil 18.0 in. Vbf
Wa 0% % PF
Dpond 3.0 in. Dip
Ksat 5.0 in/hr
SF 2.0 ft³ #
Tf 2.0 hrs PV-150 #
150x2 11.8 in. 23/160 T #
Vpv 95 % Cap. Tex. #
ETo7 21.7 in. By Others #
IE 0.85
Calculate the Design Capture Volume (Vcap):

Vcap = D85 ∙ Acat
Vcap = 0.0625ft ∙ 4129.2ft²
# Vcap = 258.1 ft³
Calculate the Permavoid Capture & Use Depth (Dcu):

Dcu = (150x2 ∙ Vpv) + (Dsoil ∙ Wa)
Dcu = (11.8in. ∙ 95%) + (18in. ∙ 0%)
# Dcu = 11.22 in. = 0.935 ft
Calculate the Planter Area (Ap):
# Ap = 187.1 ft²
Calculate the Capture & Use Volume (Vcu):

Vcu = Ap ∙ Dcu
Vcu = 187.1 ft² ∙ 0.935ft
# Vcu = 174.9 ft³
Calculate the Biofiltration Volume (Vbf):

Vbf = 1.5 ∙ (Vcap - Vcu)
Vbf = 1.5 ∙ (258.1 ft³ - 174.9 ft³)
# Vbf = 124.7 ft³
Calculate the Minimum Area Required (Amin):

Amin = Vbf / [Tf ∙ (Ksat/SF) + Dpond]
Amin = 124.7 ft³ / {[2.0hrs ∙ (5.0in/hr / 2.0) + 3in.] / 12ipf} # Amin = 187.1 ft²
Check the Planter Area (Ap) vs. the Minimum Area Required (Amin):

Ap vs. Amin
187.1 ft² vs. 187.1 ft²
187.1 ft² = 187.1 ft²
Ap = Amin ✓ - CHECKED
Calculate the Minimum Required Plant Factor (PF):

PF = (Vcu ∙ IE) / (ETo7 ∙ Ap)
PF = (174.9 ft³ ∙ 0.85) / [(21.7in. / 12ipf) ∙ 187.1 ft²] # PF = 0.44
Calculate the 7-Month Estimated Total Water Use (ETWU-7):

ETWU-7 = (ETo7 ∙ PF ∙ Ap) / IE
ETWU-7 = [(21.7in. / 12ipf) ∙ 0.44 ∙ 187.1 ft²] / 0.85
# ETWU-7 = 174.9 ft³
Check the Capture & Use Volume (Vcu) vs. the 7-Month Estimated Total Water Usage (ETWU-7):

Vcu vs. ETWU-7
174.9 ft³ vs. 174.9 ft³
# 174.9 ft³ = 174.9 ft³
Vcu = ETWU-7 ✓ - CHECKED
Planter ID Number: Design Summary
Los Angeles Low Impact Development
Capture & Use / Biofiltration Planter Design Calculations Project Name: 1/25/2023
Project Number:

Catchment Area: Planter Area: 187.1 ft²
85th Percentile Storm Depth: Capture & Use Volume: 174.9 ft³ Soil Depth: Biofiltration Volume: 124.7 ft³
Soil Available Water: Plant Factor (min.): 0.44
Ponding Depth: Internal Planter Depth: 36 in.

Soil Saturated Infiltration Rate:

Safety Factor: Material Requirements
Time To Fill: Permavoid Units: 138 Units
Permavoid System Depth: Capillary Cones: 138 Pairs
Permavoid Voids: Wicking Geotextile Length: 24 - 31 ft
7-Month Reference Evapotranspiration: Planting Media: 11.4 CY Permavoid Irrigation Efficiency: *NOTES: Quantities are for estimation only. Fluctuations in material quatities will occur based on the precise configuration. Contact ABT-Permavoid for planting media recommendations based on soil depth. 6700 PCH, Long Beach Date:

PV323189
CUB 8
Acat 1,810 ft² Ap
D85 0.0625 ft Vcu
Dsoil 18.0 in. Vbf
Wa 0% % PF
Dpond 3.0 in. Dip
Ksat 5.0 in/hr
SF 2.0 ft³ #
Tf 2.0 hrs PV-150 #
150x2 11.8 in. 23/160 T #
Vpv 95 % Cap. Tex. #
ETo7 21.7 in. By Others 5
IE 0.85
Calculate the Design Capture Volume (Vcap):

Vcap = D85 ∙ Acat
Vcap = 0.0625ft ∙ 1810.2ft²
# Vcap = 113.1 ft³
Calculate the Permavoid Capture & Use Depth (Dcu):

Dcu = (150x2 ∙ Vpv) + (Dsoil ∙ Wa)
Dcu = (11.8in. ∙ 95%) + (18in. ∙ 0%)
# Dcu = 11.22 in. = 0.935 ft
Calculate the Planter Area (Ap):
# Ap = 82 ft²
Calculate the Capture & Use Volume (Vcu):

Vcu = Ap ∙ Dcu
Vcu = 82 ft² ∙ 0.935ft
# Vcu = 76.7 ft³
Calculate the Biofiltration Volume (Vbf):

Vbf = 1.5 ∙ (Vcap - Vcu)
Vbf = 1.5 ∙ (113.1 ft³ - 76.7 ft³)
# Vbf = 54.7 ft³
Calculate the Minimum Area Required (Amin):

Amin = Vbf / [Tf ∙ (Ksat/SF) + Dpond]
Amin = 54.7 ft³ / {[2.0hrs ∙ (5.0in/hr / 2.0) + 3in.] / 12ipf} # Amin = 82 ft²
Check the Planter Area (Ap) vs. the Minimum Area Required (Amin):

Ap vs. Amin
82 ft² vs. 82 ft²
82 ft² = 82 ft²
Ap = Amin ✓ - CHECKED
Calculate the Minimum Required Plant Factor (PF):

PF = (Vcu ∙ IE) / (ETo7 ∙ Ap)
PF = (76.7 ft³ ∙ 0.85) / [(21.7in. / 12ipf) ∙ 82 ft²]
# PF = 0.44
Calculate the 7-Month Estimated Total Water Use (ETWU-7):

ETWU-7 = (ETo7 ∙ PF ∙ Ap) / IE
ETWU-7 = [(21.7in. / 12ipf) ∙ 0.44 ∙ 82 ft²] / 0.85
# ETWU-7 = 76.7 ft³
Check the Capture & Use Volume (Vcu) vs. the 7-Month Estimated Total Water Usage (ETWU-7):

Vcu vs. ETWU-7

76.7 ft³ vs. 76.7 ft³
# 76.7 ft³ = 76.7 ft³
Vcu = ETWU-7 ✓ - CHECKED
Planter ID Number: Design Summary
Los Angeles Low Impact Development
Capture & Use / Biofiltration Planter Design Calculations Project Name: 1/25/2023
Project Number:

Catchment Area: Planter Area: 82 ft²
85th Percentile Storm Depth: Capture & Use Volume: 76.7 ft³ Soil Depth: Biofiltration Volume: 54.7 ft³
Soil Available Water: Plant Factor (min.): 0.44
Ponding Depth: Internal Planter Depth: 36 in.

Soil Saturated Infiltration Rate:

Safety Factor: Material Requirements
Time To Fill: Permavoid Units: 62 Units
Permavoid System Depth: Capillary Cones: 62 Pairs
Permavoid Voids: Wicking Geotextile Length: 11 - 14 ft
7-Month Reference Evapotranspiration: Planting Media: 5 CY Permavoid Irrigation Efficiency: *NOTES: Quantities are for estimation only. Fluctuations in material quatities will occur based on the precise configuration. Contact ABT-Permavoid for planting media recommendations based on soil depth. 6700 PCH, Long Beach Date:

PV323189
CUB 9
Acat 27,824 ft² Ap
D85 0.0625 ft Vcu
Dsoil 18.0 in. Vbf
Wa 0% % PF
Dpond 3.0 in. Dip
Ksat 5.0 in/hr
SF 2.0 ft³ #
Tf 2.0 hrs PV-150 #
150x2 11.8 in. 23/160 T #
Vpv 95 % Cap. Tex. #
ETo7 21.7 in. By Others #
IE 0.85
Calculate the Design Capture Volume (Vcap):

Vcap = D85 ∙ Acat
Vcap = 0.0625ft ∙ 27823.7ft²
# Vcap = 1739 ft³
Calculate the Permavoid Capture & Use Depth (Dcu):

Dcu = (150x2 ∙ Vpv) + (Dsoil ∙ Wa)
Dcu = (11.8in. ∙ 95%) + (18in. ∙ 0%)
# Dcu = 11.22 in. = 0.935 ft
Calculate the Planter Area (Ap):
# Ap = 1260.7 ft²
Calculate the Capture & Use Volume (Vcu):

Vcu = Ap ∙ Dcu
Vcu = 1260.7 ft² ∙ 0.935ft
# Vcu = 1178.7 ft³
Calculate the Biofiltration Volume (Vbf):

Vbf = 1.5 ∙ (Vcap - Vcu)
Vbf = 1.5 ∙ (1739 ft³ - 1178.7 ft³)
# Vbf = 840.5 ft³
Calculate the Minimum Area Required (Amin):

Amin = Vbf / [Tf ∙ (Ksat/SF) + Dpond]
Amin = 840.5 ft³ / {[2.0hrs ∙ (5.0in/hr / 2.0) + 3in.] / 12ipf} # Amin = 1260.7 ft²
Check the Planter Area (Ap) vs. the Minimum Area Required (Amin):

Ap vs. Amin
1260.7 ft² vs. 1260.7 ft²
1260.7 ft² = 1260.7 ft²
Ap = Amin ✓ - CHECKED
Calculate the Minimum Required Plant Factor (PF):

PF = (Vcu ∙ IE) / (ETo7 ∙ Ap)
PF = (1178.7 ft³ ∙ 0.85) / [(21.7in. / 12ipf) ∙ 1260.7 ft²] # PF = 0.44
Calculate the 7-Month Estimated Total Water Use (ETWU-7):

ETWU-7 = (ETo7 ∙ PF ∙ Ap) / IE
ETWU-7 = [(21.7in. / 12ipf) ∙ 0.44 ∙ 1260.7 ft²] / 0.85 # ETWU-7 = 1178.7 ft³
Check the Capture & Use Volume (Vcu) vs. the 7-Month Estimated Total Water Usage (ETWU-7):

Vcu vs. ETWU-7
1178.7 ft³ vs. 1178.7 ft³
# 1178.7 ft³ = 1178.7 ft³
Vcu = ETWU-7 ✓ - CHECKED
Planter ID Number: Design Summary
Los Angeles Low Impact Development
Capture & Use / Biofiltration Planter Design Calculations Project Name: 1/25/2023
Project Number:

Catchment Area: Planter Area: 1260.7 ft²
85th Percentile Storm Depth: Capture & Use Volume: 1178.7 ft³ Soil Depth: Biofiltration Volume: 840.5 ft³
Soil Available Water: Plant Factor (min.): 0.44
Ponding Depth: Internal Planter Depth: 36 in.

Soil Saturated Infiltration Rate:

Safety Factor: Material Requirements
Time To Fill: Permavoid Units: 930 Units
Permavoid System Depth: Capillary Cones: 930 Pairs
Permavoid Voids: Wicking Geotextile Length: 149 - 210 ft 7-Month Reference Evapotranspiration: Planting Media: 77 CY Permavoid Irrigation Efficiency: *NOTES: Quantities are for estimation only. Fluctuations in material quatities will occur based on the precise configuration. Contact ABT-Permavoid for planting media recommendations based on soil depth. 6700 PCH, Long Beach Date:

PV323189
CUB 10
Acat 8,786 ft² Ap
D85 0.0625 ft Vcu
Dsoil 18.0 in. Vbf
Wa 0% % PF
Dpond 3.0 in. Dip
Ksat 5.0 in/hr
SF 2.0 ft³ #
Tf 2.0 hrs PV-150 #
150x2 11.8 in. 23/160 T #
Vpv 95 % Cap. Tex. #
ETo7 21.7 in. By Others #
IE 0.85
Calculate the Design Capture Volume (Vcap):

Vcap = D85 ∙ Acat
Vcap = 0.0625ft ∙ 8786.4ft²
# Vcap = 549.2 ft³
Calculate the Permavoid Capture & Use Depth (Dcu):

Dcu = (150x2 ∙ Vpv) + (Dsoil ∙ Wa)
Dcu = (11.8in. ∙ 95%) + (18in. ∙ 0%)
# Dcu = 11.22 in. = 0.935 ft
Calculate the Planter Area (Ap):
# Ap = 398.1 ft²
Calculate the Capture & Use Volume (Vcu):

Vcu = Ap ∙ Dcu
Vcu = 398.1 ft² ∙ 0.935ft
# Vcu = 372.2 ft³
Calculate the Biofiltration Volume (Vbf):

Vbf = 1.5 ∙ (Vcap - Vcu)
Vbf = 1.5 ∙ (549.2 ft³ - 372.2 ft³)
# Vbf = 265.4 ft³
Calculate the Minimum Area Required (Amin):

Amin = Vbf / [Tf ∙ (Ksat/SF) + Dpond]
Amin = 265.4 ft³ / {[2.0hrs ∙ (5.0in/hr / 2.0) + 3in.] / 12ipf} # Amin = 398.1 ft²
Check the Planter Area (Ap) vs. the Minimum Area Required (Amin):

Ap vs. Amin
398.1 ft² vs. 398.1 ft²
398.1 ft² = 398.1 ft²
Ap = Amin ✓ - CHECKED
Calculate the Minimum Required Plant Factor (PF):

PF = (Vcu ∙ IE) / (ETo7 ∙ Ap)
PF = (372.2 ft³ ∙ 0.85) / [(21.7in. / 12ipf) ∙ 398.1 ft²] # PF = 0.44
Calculate the 7-Month Estimated Total Water Use (ETWU-7):

ETWU-7 = (ETo7 ∙ PF ∙ Ap) / IE
ETWU-7 = [(21.7in. / 12ipf) ∙ 0.44 ∙ 398.1 ft²] / 0.85
# ETWU-7 = 372.2 ft³
Check the Capture & Use Volume (Vcu) vs. the 7-Month Estimated Total Water Usage (ETWU-7):

Vcu vs. ETWU-7
372.2 ft³ vs. 372.2 ft³
# 372.2 ft³ = 372.2 ft³
Vcu = ETWU-7 ✓ - CHECKED
Planter ID Number: Design Summary
Los Angeles Low Impact Development
Capture & Use / Biofiltration Planter Design Calculations Project Name: 1/25/2023
Project Number:

Catchment Area: Planter Area: 398.1 ft²
85th Percentile Storm Depth: Capture & Use Volume: 372.2 ft³ Soil Depth: Biofiltration Volume: 265.4 ft³
Soil Available Water: Plant Factor (min.): 0.44
Ponding Depth: Internal Planter Depth: 36 in.

Soil Saturated Infiltration Rate:

Safety Factor: Material Requirements
Time To Fill: Permavoid Units: 294 Units
Permavoid System Depth: Capillary Cones: 294 Pairs
Permavoid Voids: Wicking Geotextile Length: 49 - 67 ft
7-Month Reference Evapotranspiration: Planting Media: 24.3 CY Permavoid Irrigation Efficiency: *NOTES: Quantities are for estimation only. Fluctuations in material quatities will occur based on the precise configuration. Contact ABT-Permavoid for planting media recommendations based on soil depth. 6700 PCH, Long Beach Date:

PV323189
CUB 11
Acat 17,146 ft² Ap
D85 0.0625 ft Vcu
Dsoil 18.0 in. Vbf
Wa 0% % PF
Dpond 3.0 in. Dip
Ksat 5.0 in/hr
SF 2.0 ft³ #
Tf 2.0 hrs PV-150 #
150x2 11.8 in. 23/160 T #
Vpv 95 % Cap. Tex. #
ETo7 21.7 in. By Others #
IE 0.85
Calculate the Design Capture Volume (Vcap):

Vcap = D85 ∙ Acat
Vcap = 0.0625ft ∙ 17145.8ft²
# Vcap = 1071.6 ft³
Calculate the Permavoid Capture & Use Depth (Dcu):

Dcu = (150x2 ∙ Vpv) + (Dsoil ∙ Wa)
Dcu = (11.8in. ∙ 95%) + (18in. ∙ 0%)
# Dcu = 11.22 in. = 0.935 ft
Calculate the Planter Area (Ap):
# Ap = 776.9 ft²
Calculate the Capture & Use Volume (Vcu):

Vcu = Ap ∙ Dcu
Vcu = 776.9 ft² ∙ 0.935ft
# Vcu = 726.3 ft³
Calculate the Biofiltration Volume (Vbf):

Vbf = 1.5 ∙ (Vcap - Vcu)
Vbf = 1.5 ∙ (1071.6 ft³ - 726.3 ft³)
# Vbf = 517.9 ft³
Calculate the Minimum Area Required (Amin):

Amin = Vbf / [Tf ∙ (Ksat/SF) + Dpond]
Amin = 517.9 ft³ / {[2.0hrs ∙ (5.0in/hr / 2.0) + 3in.] / 12ipf} # Amin = 776.9 ft²
Check the Planter Area (Ap) vs. the Minimum Area Required (Amin):

Ap vs. Amin
776.9 ft² vs. 776.9 ft²
776.9 ft² = 776.9 ft²
Ap = Amin ✓ - CHECKED
Calculate the Minimum Required Plant Factor (PF):

PF = (Vcu ∙ IE) / (ETo7 ∙ Ap)
PF = (726.3 ft³ ∙ 0.85) / [(21.7in. / 12ipf) ∙ 776.9 ft²] # PF = 0.44
Calculate the 7-Month Estimated Total Water Use (ETWU-7):

ETWU-7 = (ETo7 ∙ PF ∙ Ap) / IE
ETWU-7 = [(21.7in. / 12ipf) ∙ 0.44 ∙ 776.9 ft²] / 0.85
# ETWU-7 = 726.3 ft³
Check the Capture & Use Volume (Vcu) vs. the 7-Month Estimated Total Water Usage (ETWU-7):

Vcu vs. ETWU-7
726.3 ft³ vs. 726.3 ft³
# 726.3 ft³ = 726.3 ft³
Vcu = ETWU-7 ✓ - CHECKED
Planter ID Number: Design Summary
Los Angeles Low Impact Development
Capture & Use / Biofiltration Planter Design Calculations Project Name: 1/25/2023
Project Number:

Catchment Area: Planter Area: 776.9 ft²
85th Percentile Storm Depth: Capture & Use Volume: 726.3 ft³ Soil Depth: Biofiltration Volume: 517.9 ft³
Soil Available Water: Plant Factor (min.): 0.44
Ponding Depth: Internal Planter Depth: 36 in.

Soil Saturated Infiltration Rate:

Safety Factor: Material Requirements
Time To Fill: Permavoid Units: 574 Units
Permavoid System Depth: Capillary Cones: 574 Pairs
Permavoid Voids: Wicking Geotextile Length: 93 - 130 ft 7-Month Reference Evapotranspiration: Planting Media: 47.5 CY Permavoid Irrigation Efficiency: *NOTES: Quantities are for estimation only. Fluctuations in material quatities will occur based on the precise configuration. Contact ABT-Permavoid for planting media recommendations based on soil depth. 6700 PCH, Long Beach Date:

PV323189
CUB 12
Acat 7,098 ft² Ap
D85 0.0625 ft Vcu
Dsoil 18.0 in. Vbf
Wa 0% % PF
Dpond 3.0 in. Dip
Ksat 5.0 in/hr
SF 2.0 ft³ #
Tf 2.0 hrs PV-150 #
150x2 11.8 in. 23/160 T #
Vpv 95 % Cap. Tex. #
ETo7 21.7 in. By Others #
IE 0.85
Calculate the Design Capture Volume (Vcap):

Vcap = D85 ∙ Acat
Vcap = 0.0625ft ∙ 7098.3ft²
# Vcap = 443.6 ft³
Calculate the Permavoid Capture & Use Depth (Dcu):

Dcu = (150x2 ∙ Vpv) + (Dsoil ∙ Wa)
Dcu = (11.8in. ∙ 95%) + (18in. ∙ 0%)
# Dcu = 11.22 in. = 0.935 ft
Calculate the Planter Area (Ap):
# Ap = 321.6 ft²
Calculate the Capture & Use Volume (Vcu):

Vcu = Ap ∙ Dcu
Vcu = 321.6 ft² ∙ 0.935ft
# Vcu = 300.7 ft³
Calculate the Biofiltration Volume (Vbf):

Vbf = 1.5 ∙ (Vcap - Vcu)
Vbf = 1.5 ∙ (443.6 ft³ - 300.7 ft³)
# Vbf = 214.4 ft³
Calculate the Minimum Area Required (Amin):

Amin = Vbf / [Tf ∙ (Ksat/SF) + Dpond]
Amin = 214.4 ft³ / {[2.0hrs ∙ (5.0in/hr / 2.0) + 3in.] / 12ipf} # Amin = 321.6 ft²
Check the Planter Area (Ap) vs. the Minimum Area Required (Amin):

Ap vs. Amin
321.6 ft² vs. 321.6 ft²
321.6 ft² = 321.6 ft²
Ap = Amin ✓ - CHECKED
Calculate the Minimum Required Plant Factor (PF):

PF = (Vcu ∙ IE) / (ETo7 ∙ Ap)
PF = (300.7 ft³ ∙ 0.85) / [(21.7in. / 12ipf) ∙ 321.6 ft²] # PF = 0.44
Calculate the 7-Month Estimated Total Water Use (ETWU-7):

ETWU-7 = (ETo7 ∙ PF ∙ Ap) / IE
ETWU-7 = [(21.7in. / 12ipf) ∙ 0.44 ∙ 321.6 ft²] / 0.85
# ETWU-7 = 300.7 ft³
Check the Capture & Use Volume (Vcu) vs. the 7-Month Estimated Total Water Usage (ETWU-7):

Vcu vs. ETWU-7
300.7 ft³ vs. 300.7 ft³
# 300.7 ft³ = 300.7 ft³
Vcu = ETWU-7 ✓ - CHECKED
Planter ID Number: Design Summary
Los Angeles Low Impact Development
Capture & Use / Biofiltration Planter Design Calculations Project Name: 1/25/2023
Project Number:

Catchment Area: Planter Area: 321.6 ft²
85th Percentile Storm Depth: Capture & Use Volume: 300.7 ft³ Soil Depth: Biofiltration Volume: 214.4 ft³
Soil Available Water: Plant Factor (min.): 0.44
Ponding Depth: Internal Planter Depth: 36 in.

Soil Saturated Infiltration Rate:

Safety Factor: Material Requirements
Time To Fill: Permavoid Units: 238 Units
Permavoid System Depth: Capillary Cones: 238 Pairs
Permavoid Voids: Wicking Geotextile Length: 40 - 54 ft
7-Month Reference Evapotranspiration: Planting Media: 19.7 CY Permavoid Irrigation Efficiency: *NOTES: Quantities are for estimation only. Fluctuations in material quatities will occur based on the precise configuration. Contact ABT-Permavoid for planting media recommendations based on soil depth. 6700 PCH, Long Beach Date:

PV323189
CUB 13
Acat 8,664 ft² Ap
D85 0.0625 ft Vcu
Dsoil 18.0 in. Vbf
Wa 0% % PF
Dpond 3.0 in. Dip
Ksat 5.0 in/hr
SF 2.0 ft³ #
Tf 2.0 hrs PV-150 #
150x2 11.8 in. 23/160 T #
Vpv 95 % Cap. Tex. #
ETo7 21.7 in. By Others #
IE 0.85
Calculate the Design Capture Volume (Vcap):

Vcap = D85 ∙ Acat
Vcap = 0.0625ft ∙ 8664.4ft²
# Vcap = 541.5 ft³
Calculate the Permavoid Capture & Use Depth (Dcu):

Dcu = (150x2 ∙ Vpv) + (Dsoil ∙ Wa)
Dcu = (11.8in. ∙ 95%) + (18in. ∙ 0%)
# Dcu = 11.22 in. = 0.935 ft
Calculate the Planter Area (Ap):
# Ap = 392.6 ft²
Calculate the Capture & Use Volume (Vcu):

Vcu = Ap ∙ Dcu
Vcu = 392.6 ft² ∙ 0.935ft
# Vcu = 367 ft³
Calculate the Biofiltration Volume (Vbf):

Vbf = 1.5 ∙ (Vcap - Vcu)
Vbf = 1.5 ∙ (541.5 ft³ - 367 ft³)
# Vbf = 261.7 ft³
Calculate the Minimum Area Required (Amin):

Amin = Vbf / [Tf ∙ (Ksat/SF) + Dpond]
Amin = 261.7 ft³ / {[2.0hrs ∙ (5.0in/hr / 2.0) + 3in.] / 12ipf} # Amin = 392.6 ft²
Check the Planter Area (Ap) vs. the Minimum Area Required (Amin):

Ap vs. Amin
392.6 ft² vs. 392.6 ft²
392.6 ft² = 392.6 ft²
Ap = Amin ✓ - CHECKED
Calculate the Minimum Required Plant Factor (PF):

PF = (Vcu ∙ IE) / (ETo7 ∙ Ap)
PF = (367 ft³ ∙ 0.85) / [(21.7in. / 12ipf) ∙ 392.6 ft²] # PF = 0.44
Calculate the 7-Month Estimated Total Water Use (ETWU-7):

ETWU-7 = (ETo7 ∙ PF ∙ Ap) / IE
ETWU-7 = [(21.7in. / 12ipf) ∙ 0.44 ∙ 392.6 ft²] / 0.85
# ETWU-7 = 367 ft³
Check the Capture & Use Volume (Vcu) vs. the 7-Month Estimated Total Water Usage (ETWU-7):

Vcu vs. ETWU-7
367 ft³ vs. 367 ft³
# 367 ft³ = 367 ft³
Vcu = ETWU-7 ✓ - CHECKED
Planter ID Number: Design Summary
Los Angeles Low Impact Development
Capture & Use / Biofiltration Planter Design Calculations Project Name: 1/25/2023
Project Number:

Catchment Area: Planter Area: 392.6 ft²
85th Percentile Storm Depth: Capture & Use Volume: 367 ft³ Soil Depth: Biofiltration Volume: 261.7 ft³
Soil Available Water: Plant Factor (min.): 0.44
Ponding Depth: Internal Planter Depth: 36 in.

Soil Saturated Infiltration Rate:

Safety Factor: Material Requirements
Time To Fill: Permavoid Units: 290 Units
Permavoid System Depth: Capillary Cones: 290 Pairs
Permavoid Voids: Wicking Geotextile Length: 48 - 66 ft
7-Month Reference Evapotranspiration: Planting Media: 24 CY Permavoid Irrigation Efficiency: *NOTES: Quantities are for estimation only. Fluctuations in material quatities will occur based on the precise configuration. Contact ABT-Permavoid for planting media recommendations based on soil depth. 6700 PCH, Long Beach Date:

PV323189
CUB 14
Acat 5,939 ft² Ap
D85 0.0625 ft Vcu
Dsoil 18.0 in. Vbf
Wa 0% % PF
Dpond 3.0 in. Dip
Ksat 5.0 in/hr
SF 2.0 ft³ #
Tf 2.0 hrs PV-150 #
150x2 11.8 in. 23/160 T #
Vpv 95 % Cap. Tex. #
ETo7 21.7 in. By Others #
IE 0.85
Calculate the Design Capture Volume (Vcap):

Vcap = D85 ∙ Acat
Vcap = 0.0625ft ∙ 5939ft²
# Vcap = 371.2 ft³
Calculate the Permavoid Capture & Use Depth (Dcu):

Dcu = (150x2 ∙ Vpv) + (Dsoil ∙ Wa)
Dcu = (11.8in. ∙ 95%) + (18in. ∙ 0%)
# Dcu = 11.22 in. = 0.935 ft
Calculate the Planter Area (Ap):
# Ap = 269.1 ft²
Calculate the Capture & Use Volume (Vcu):

Vcu = Ap ∙ Dcu
Vcu = 269.1 ft² ∙ 0.935ft
# Vcu = 251.6 ft³
Calculate the Biofiltration Volume (Vbf):

Vbf = 1.5 ∙ (Vcap - Vcu)
Vbf = 1.5 ∙ (371.2 ft³ - 251.6 ft³)
# Vbf = 179.4 ft³
Calculate the Minimum Area Required (Amin):

Amin = Vbf / [Tf ∙ (Ksat/SF) + Dpond]
Amin = 179.4 ft³ / {[2.0hrs ∙ (5.0in/hr / 2.0) + 3in.] / 12ipf} # Amin = 269.1 ft²
Check the Planter Area (Ap) vs. the Minimum Area Required (Amin):

Ap vs. Amin
269.1 ft² vs. 269.1 ft²
269.1 ft² = 269.1 ft²
Ap = Amin ✓ - CHECKED
Calculate the Minimum Required Plant Factor (PF):

PF = (Vcu ∙ IE) / (ETo7 ∙ Ap)
PF = (251.6 ft³ ∙ 0.85) / [(21.7in. / 12ipf) ∙ 269.1 ft²] # PF = 0.44
Calculate the 7-Month Estimated Total Water Use (ETWU-7):

ETWU-7 = (ETo7 ∙ PF ∙ Ap) / IE
ETWU-7 = [(21.7in. / 12ipf) ∙ 0.44 ∙ 269.1 ft²] / 0.85
# ETWU-7 = 251.6 ft³
Check the Capture & Use Volume (Vcu) vs. the 7-Month Estimated Total Water Usage (ETWU-7):

Vcu vs. ETWU-7
251.6 ft³ vs. 251.6 ft³
# 251.6 ft³ = 251.6 ft³
Vcu = ETWU-7 ✓ - CHECKED
Planter ID Number: Design Summary
Los Angeles Low Impact Development
Capture & Use / Biofiltration Planter Design Calculations Project Name: 1/25/2023
Project Number:

Catchment Area: Planter Area: 269.1 ft²
85th Percentile Storm Depth: Capture & Use Volume: 251.6 ft³ Soil Depth: Biofiltration Volume: 179.4 ft³
Soil Available Water: Plant Factor (min.): 0.44
Ponding Depth: Internal Planter Depth: 36 in.

Soil Saturated Infiltration Rate:

Safety Factor: Material Requirements
Time To Fill: Permavoid Units: 200 Units
Permavoid System Depth: Capillary Cones: 200 Pairs
Permavoid Voids: Wicking Geotextile Length: 34 - 45 ft
7-Month Reference Evapotranspiration: Planting Media: 16.4 CY Permavoid Irrigation Efficiency: *NOTES: Quantities are for estimation only. Fluctuations in material quatities will occur based on the precise configuration. Contact ABT-Permavoid for planting media recommendations based on soil depth. 6700 PCH, Long Beach Date:

PV323189
CUB 15
Acat 8,766 ft² Ap
D85 0.0625 ft Vcu
Dsoil 18.0 in. Vbf
Wa 0% % PF
Dpond 3.0 in. Dip
Ksat 5.0 in/hr
SF 2.0 ft³ #
Tf 2.0 hrs PV-150 #
150x2 11.8 in. 23/160 T #
Vpv 95 % Cap. Tex. #
ETo7 21.7 in. By Others #
IE 0.85
Calculate the Design Capture Volume (Vcap):

Vcap = D85 ∙ Acat
Vcap = 0.0625ft ∙ 8766.1ft²
# Vcap = 547.9 ft³
Calculate the Permavoid Capture & Use Depth (Dcu):

Dcu = (150x2 ∙ Vpv) + (Dsoil ∙ Wa)
Dcu = (11.8in. ∙ 95%) + (18in. ∙ 0%)
# Dcu = 11.22 in. = 0.935 ft
Calculate the Planter Area (Ap):
# Ap = 397.2 ft²
Calculate the Capture & Use Volume (Vcu):

Vcu = Ap ∙ Dcu
Vcu = 397.2 ft² ∙ 0.935ft
# Vcu = 371.4 ft³
Calculate the Biofiltration Volume (Vbf):

Vbf = 1.5 ∙ (Vcap - Vcu)
Vbf = 1.5 ∙ (547.9 ft³ - 371.4 ft³)
# Vbf = 264.8 ft³
Calculate the Minimum Area Required (Amin):

Amin = Vbf / [Tf ∙ (Ksat/SF) + Dpond]
Amin = 264.8 ft³ / {[2.0hrs ∙ (5.0in/hr / 2.0) + 3in.] / 12ipf} # Amin = 397.2 ft²
Check the Planter Area (Ap) vs. the Minimum Area Required (Amin):

Ap vs. Amin
397.2 ft² vs. 397.2 ft²
397.2 ft² = 397.2 ft²
Ap = Amin ✓ - CHECKED
Calculate the Minimum Required Plant Factor (PF):

PF = (Vcu ∙ IE) / (ETo7 ∙ Ap)
PF = (371.4 ft³ ∙ 0.85) / [(21.7in. / 12ipf) ∙ 397.2 ft²] # PF = 0.44
Calculate the 7-Month Estimated Total Water Use (ETWU-7):

ETWU-7 = (ETo7 ∙ PF ∙ Ap) / IE
ETWU-7 = [(21.7in. / 12ipf) ∙ 0.44 ∙ 397.2 ft²] / 0.85
# ETWU-7 = 371.4 ft³
Check the Capture & Use Volume (Vcu) vs. the 7-Month Estimated Total Water Usage (ETWU-7):

Vcu vs. ETWU-7
371.4 ft³ vs. 371.4 ft³
# 371.4 ft³ = 371.4 ft³
Vcu = ETWU-7 ✓ - CHECKED
Planter ID Number: Design Summary
Los Angeles Low Impact Development
Capture & Use / Biofiltration Planter Design Calculations Project Name: 1/25/2023
Project Number:

Catchment Area: Planter Area: 397.2 ft²
85th Percentile Storm Depth: Capture & Use Volume: 371.4 ft³ Soil Depth: Biofiltration Volume: 264.8 ft³
Soil Available Water: Plant Factor (min.): 0.44
Ponding Depth: Internal Planter Depth: 36 in.

Soil Saturated Infiltration Rate:

Safety Factor: Material Requirements
Time To Fill: Permavoid Units: 294 Units
Permavoid System Depth: Capillary Cones: 294 Pairs
Permavoid Voids: Wicking Geotextile Length: 49 - 66 ft
7-Month Reference Evapotranspiration: Planting Media: 24.3 CY Permavoid Irrigation Efficiency: *NOTES: Quantities are for estimation only. Fluctuations in material quatities will occur based on the precise configuration. Contact ABT-Permavoid for planting media recommendations based on soil depth.

H y d r o l o g y a n d L I D R e p o r t 3 1 9 M a i n S t r e e t 6 7 0 0 P a c i f i c C o a s t H i g h w a y E l S e g u n d o , C a l i f o r n i a 9 0 2 4 5 L o n g B e a c h , C A 9 0 8 0 3 t : 2 1 3 / 2 3 9 9 7 0 0 P a g e 7 w w w . l a b i b f u n k . c o m

APPENDIX C
BMP Exhibit

H y d r o l o g y a n d L I D R e p o r t 3 1 9 M a i n S t r e e t 6 7 0 0 P a c i f i c C o a s t H i g h w a y E l S e g u n d o , C a l i f o r n i a 9 0 2 4 5 L o n g B e a c h , C A 9 0 8 0 3 t : 2 1 3 / 2 3 9 9 7 0 0 P a g e 8 w w w . l a b i b f u n k . c o m

APPENDIX D
BMP Operation and Maintenance Plan (O&M)

P.O. Box 837
259 Murdock Road
Troutman, NC 28166
Phone: (800) 438-6057 (704) 528-9806
Fax: (704) 528-9806
www.abtdrains.com
LID Planter System Inspection and Maintenance Procedure – ABT Permavoid

Example with Permavoid 85 (PV 85) layer.

The engineered LID Planter system should provide many years of enjoyment. As with all systems, regular inspections are an important part of a healthy and functioning planter. Each LID planter has been engineered and designed with a specific configuration to the project so it is important to keep a file of the plans including the detail of each planter on the site. With the planter detail in hand, it will be evident the planters are built with layers of pervious soil materials, fabrics for protection and capillary irrigation function, a layer or so of ABT Permavoid, and it is all encapsulated by a water proof membrane. (NOTE: It is extremely important to not damage, scrape or tear the fabrics or the waterproof membrane during the inspection and maintenance process to avoid compromising the function and integrity of the system. If something is damaged, replacement items are available. Contact www.abtdrains.com for more information).

Routine Inspections and Maintenance Steps
The LID planter should be relatively maintenance free other than surface debris removal. With that, it is important to conduct regular visual inspections(monthly) of the planter for trash and debris and to remove any physical debris which could impede the planter function. Also, be sure the sand and soil mix is free of wood, other waste, coating such as clay, stone dust, carbonate, etc or any other deleterious material. Mulch can be left in place as it as likely part of the planter design.

Once the surface debris is removed, remove the cover on the overflow pipe to examine and make sure there are no visible obstructions using a flashlight. If obstructions are visible, remove them. If your unit is fitted with a pipe that extends to the bottom of the chamber, use the flashlight to determine if debris accumulation has occurred. This will be evident when the geotextile and bottom of the ABT Permavoid units, both black in color, can no longer be seen. If both are clearly visible, no action needs to be taken. In the event sediment has begun to accumulate, it is important to measure and document the amount. Check with the Los Angeles LID team if there are questions on your planter or if the sediment accumulation requires additional cleaning steps.

If there are further concerns about your planter function specific to the Permavoid and its capillary components, contact ABT for more information at www.abtdrains.com.

H y d r o l o g y a n d L I D R e p o r t 3 1 9 M a i n S t r e e t 6 7 0 0 P a c i f i c C o a s t H i g h w a y E l S e g u n d o , C a l i f o r n i a 9 0 2 4 5 L o n g B e a c h , C A 9 0 8 0 3 t : 2 1 3 / 2 3 9 9 7 0 0 P a g e 9 w w w . l a b i b f u n k . c o m

APPENDIX E
Hydrocalc 24hr., 50yr
Peak Flow Hydrologic Analysis
File location: Q:/22029 - 6700 PCH/LFA C/C E/01 STORM/LID/01 CALCS AND REPORT/MRNA - 6700 PCH - 50YR - PRE DEV.pdf Version: HydroCalc 1.0.3
Input Parameters
Project Name MRNA
Subarea ID 6700 PCH - EX.

Area (ac) 2.62
Flow Path Length (ft) 509.0
Flow Path Slope (vft/hft) 0.018
50-yr Rainfall Depth (in) 4.8
Percent Impervious 0.74
Soil Type 15
Design Storm Frequency 50-yr
Fire Factor 0
LID False
Output Results
Modeled (50-yr) Rainfall Depth (in) 4.8
Peak Intensity (in/hr) 2.2962
Undeveloped Runoff Coefficient (Cu) 0.326
Developed Runoff Coefficient (Cd) 0.7508
Time of Concentration (min) 8.0
Clear Peak Flow Rate (cfs) 4.5166
Burned Peak Flow Rate (cfs) 4.5166
24-Hr Clear Runoff Volume (ac-ft) 0.7228
24-Hr Clear Runoff Volume (cu-ft) 31485.4637
Peak Flow Hydrologic Analysis
File location: Q:/22029 - 6700 PCH/LFA C/C E/01 STORM/LID/01 CALCS AND REPORT/Appendix/MRNA - HYDROCALC POST.pdf Version: HydroCalc 1.0.3
Input Parameters
Project Name MRNA
Subarea ID 6700 PCH
Area (ac) 2.62
Flow Path Length (ft) 885.0
Flow Path Slope (vft/hft) 0.018
50-yr Rainfall Depth (in) 4.8
Percent Impervious 0.9
Soil Type 15
Design Storm Frequency 50-yr
Fire Factor 0
LID False
Output Results
Modeled (50-yr) Rainfall Depth (in) 4.8
Peak Intensity (in/hr) 1.977
Undeveloped Runoff Coefficient (Cu) 0.2871
Developed Runoff Coefficient (Cd) 0.8387
Time of Concentration (min) 11.0
Clear Peak Flow Rate (cfs) 4.3443
Burned Peak Flow Rate (cfs) 4.3443
24-Hr Clear Runoff Volume (ac-ft) 0.8535
24-Hr Clear Runoff Volume (cu-ft) 37178.6087

H y d r o l o g y a n d L I D R e p o r t 3 1 9 M a i n S t r e e t 6 7 0 0 P a c i f i c C o a s t H i g h w a y E l S e g u n d o , C a l i f o r n i a 9 0 2 4 5 L o n g B e a c h , C A 9 0 8 0 3 t : 2 1 3 / 2 3 9 9 7 0 0 P a g e 1 0 w w w . l a b i b f u n k . c o m

APPENDIX F
FEMA Flood zone map

H y d r o l o g y a n d L I D R e p o r t 3 1 9 M a i n S t r e e t 6 7 0 0 P a c i f i c C o a s t H i g h w a y E l S e g u n d o , C a l i f o r n i a 9 0 2 4 5 L o n g B e a c h , C A 9 0 8 0 3 t : 2 1 3 / 2 3 9 9 7 0 0 P a g e 1 1 w w w . l a b i b f u n k . c o m

APPENDIX G
Soils Report

 



 
 

 








  

 








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