The document provides details on David Lewis Perrings' professional experience as a civil engineer, including summaries of several projects he has worked on related to stormwater management, drainage, flood control, and water quality. It lists his educational background and professional licenses. It also outlines his current role as a project civil engineer and highlights his expertise in areas such as hydrology, hydraulics, flood mapping, and water/wastewater engineering.

1. David Lewis Perrings,PE, QSD/P
Project Civil Engineer
110 StarlightPlace▪ Danville▪ California▪ 94526 ▪ 925 858 7253 ▪ dperrings@outlook.com
1
Current Project Experience (partial list)
Wilder Development, Orinda, California
250 Lot Residential Development (currently in
construction) with Community Ball Fields, Swim Center
and Art & Garden Center. Total Land Area with open
space, 1000+ acres
Storm Water Management Plan, Offsite Drainage Study,
OnsiteDrainageStudy,Storm DrainageCalculations,Basin
Routing Calculations, Multiple Detention Basins and
Water Quality Basins, BMP studies and design for grassy
swales, bio-retention areas and mechanical treatment
units, FEMA CLOMR for Brookside Creek. A water quality
permit was obtained from the State Regional Water
Quality Control Board.
Schaefer Ranch, Dublin, California
250 Lot Residential Development
Drainage Study, Phase I, Caltrans; Drainage Study, Phase
II, storm drainage design and calculations, Basin routing
and design (3 detention Basins), water quality Basin
design (2 Basins). A water quality permit was obtained
from the State Regional Water Quality Control Board
Stonecreek Development, Los Banos, California
Residential, mixed use and commercial development
Approximately 2000 + acres
Master utility plan study for water, sewer and storm
drainage;sewer and stormdrain pump station studies and
design; storm drainage & sewer studies and calculations
for eight neighborhoods;detention basin design;design of
three miles of sanitary sewer force main
Alhambra Valley Oaks, Contra Costa County, California
27 Lot Residential Development
Drainage Study, Storm drainage calculations, detention
basin studies,FEMA CLOMR, Creek Outfall Design,Water
Quality Study, Obtain water quality permitfrom the State
Regional Water Quality Control Board
Creekside Cemetery Project
Contra Costa County, California
Prepared Contra Costa County C.3. Storm Water Control
Plan.
Expert Witness for Plaintiff is Drainage Lawsuit
Client: Archer Norris Law Firm, Walnut Creek; Drainage
Lawsuitfor sitein Richmond California.
Other Drainage, Water Quality and Flood Control
Projects
Prepared drainage studies for projects in Wendover,
Nevada; Fairfield, Concord; Moraga, Lafayette, Antioch,
Orinda,Clayton,Dublin,Danville,San Ramon, and Walnut
Creek Ca
Previous Project Experience (partial list)
Utility Studies, City of Foster City, California
Assessment of development impact on existing utility
systems and lift stations within the city of Foster City.
Utilities included storm, water and sanitary sewer
systems.Flow monitoringof liftstations wasperformed in
conjunction with capacity analysisof utilities.
Education ▪ B.S.C.E. Civil Engineering,Rose-Hulman Institute of Technology, 1978
Professional Registration ▪ R.C.E #39157, State of California ▪ QSD/QSP # 01188,CASQA
Professional Associations ▪ American Society of Civil Engineers, M.ASCE ▪ Member of ASCE
Committee on American Infrastructure (CAI), 3rd Year, responsible for the Report Card for
American Infrastructure,next release date March,2017.
Current Position ▪ ProjectCivil Engineer, P/A Design Resources, Inc,Walnut Creek, CA, 2002
to Current, 15 years.
Skills ▪ Report writing, computer analysis, CAD, engineering design and analysis. Computer
programs utilized included:Hec l and ll,Hec Ras and HMS; Bentley’s Pond Pack, Graphic Hec
l, StormCAD, SewerCAD and Flowmaster; AutoCAD, MAP, LAND and Civil , and BAHM, Bay
Area Hydrology Model. Water Quality Studies included selection and design of BMP
measures, hydromodification,vector control plans,Operations and MaintenancePlans.
Prior Experience ▪ Mr. Perrings has over 25 years of professional engineering
experience in civil engineering design, project management, and construction
management. As a Civil Engineer he has managed the design of numerousprivate
and public works projects. Key responsibilities include project management of
design team, client contact, and project administration. Municipal projects have
included street, highways, grade crossings, quality control/quality assurance and
utility designs. These projects included preparation of plans, specifications, bid
documentsandcostestimates. Site developmentprojectshave includedresidential
subdivisions,commercial developments, business parks, hotel and hospitals. His
responsibilities have included each phase of the design process: regulatory
environmental review, tentative map, improvement plans and construction
support.
Key Areas of
Expertise
 Stormwater
 Hydraulics
 Hydrology
 Water Quality
 Flood Control
 Basin Routing
 FEMA Flood
Mapping
 Water/Wastewater
Engineering
 Civil/Site
Engineering
 Municipal
Engineering
 Environmental
 Permitting

2. David Lewis Perrings,PE, QSD/P
Project Civil Engineer
110 StarlightPlace▪ Danville▪ California▪ 94526 ▪ 925 858 7253 ▪ dperrings@outlook.com
2
Truckee Meadows Floodwall and Levee Project, Reno,
NV
Feasibility level design and cost estimates for thirty miles
of levels and floodwalls alongthe Truckee River between
Reno and Sparks,Nevada for the Army Corps of Engineers,
Sacramento District.Intergraph Inroadswas used to aid in
the civil design of the project. Features of the design
included digital terrain modeling, ortho-photos, plan and
profile drawings and aerial mosaic. Construction cost
estimate for the project is 150 million dollars.
Vista Grande Canal Flow Monitoring Study, Daly City, CA
A study was conducted for the City of Daly City on theVista
Grande Canal adjacentto Lake Merced in San Francisco to
determine the annual expected flow volume in the Canal
for possible diversion into Lake Merced. The purpose of
the diversion is to aid in the current trend reversal of
decreasinglakelevels.Flows weremeasured and analyzed
during the 1998-99-winter season. The study
demonstrated to the City of Daly City and to the San
Francisco Public Utilities Commission thatsufficientflows
occurred in the canal thatcould be diverted into the lake
to increasethe water surfaceelevation in the lake.
National Flood Insurance Program, Community Rating
System Application, Mountain View, CA
Prepared application for submittal to FEMA for the
Community Rating System for the City of Mountain View.
The application identified measures taken by the City that
will reduce the probability of negative impacts from
floodingwithin the City. The benefit to the Community is
lower flood insurancepremiums.
National Flood Insurance Program, Substantial
Improvement Procedure
Developed application and procedure for the City of
Mountain View for the determination of substantial
improvements in accordancewith FEMA’s National Flood
Insurance Program. A relational database was developed
in conjunction with GIS mappingto test the impact of the
procedure on the Community and the City’s workload.
Three thousand buildingpermitapplicationsweretested.
Northridge Earthquake Recovery, Pasadena, CA
Worked at the Northridge Earthquake Recovery Office of
the Federal Emergency Management Agency in Pasadena,
California as a Technical Assistance Contractor. Primary
function was to review requests for federal monetary
assistanceby thepublic agencies thatsuffered earthquake
damage and prepareconstruction DamageSurvey Reports
(DSR’s), which established a construction scope of work
and construction funding criteria. Elements of the DSR
include: building damage repair scope of work, code
compliance, access compliance, environmental review,
historic review and hazard mitigation. During the project
design and construction phase responsibilities also
included design eligibility reviewand construction project
monitoring.