Glorilyn Maw, P.E., Principal
Hydraulic Engineer
MP Stormwater Engineering LLC, East Olympia, Washington
PROFILE:
MP Stormwater Engineering LLC is an MWBE certified consulting firm specializing in
hydraulic engineering services. The firm’s focus is to provide surface water management design
including hydrologic and hydraulic modeling, flow control and treatment facility sizing, and
drainage report preparation. They are recognized experts in the field of stormwater modeling
and have provided training to engineers statewide. The owners of MP Stormwater Engineering
LLC are Rocio Peralta and Glorilyn Maw and have 34 years of combined experience.
EMPLOYMENT HISTORY
MP STORMWATER ENGINEERING LLC
Owner (2008-Present)
Performed hydrologic and hydraulic engineering services in stormwater, river mechanics, scour,
backwater analysis, and fish passage designs. Provided multiple trainings on MGSFlood
software and river mechanics.
WASHINGTON STATE DEPARTMENT OF TRANSPORTATION
Hydraulic Engineer (1999-2001, 2003 - 2007)
Participated in developing and revising portions of the WSDOT Highway Runoff Manual and
the Hydraulics Manual and provided stormwater design guidance and training to project offices
statewide. Assisted in the development of MGSFlood, the continuous simulation model for
stormwater management designs. Worked with contour mapping to determine drainage basin
area, use USGS regression formulas to determine peak flows, serve as staff specialist in Single
Event and Continuous Simulation software to design complex applications for water quality and
water quantity design. Provided training of Stormshed software and the basic Hydraulic and
Hydrology class on these concepts.
DEWBERRY & DAVIS A/E FIRM
Civil Engineer (1997-1999)
Performed hydrologic and hydraulic studies and bridge scour assessments. Managed multiple
land development and municipal projects by scheduling project tasks and assigning and
supervising available resources. Developed fee proposals and participated in interviews for
future work.
WASHINGTON STATE DEPARTMENT OF TRANSPORTATION
Hydraulic Engineer (1995-1997)
Performed structural analyses and designs for large diameter pipes, and hydraulic design reviews
bridge scour studies, backwater analyses, streambank stabilization designs. Designed large
onsite sewage treatment systems for rest areas.
EDUCATION:
Gonzaga University / Bachelor of Science in Civil Engineering / 1990
University of Washington / Master of Science in Civil Engineering / 1995
PROFESSIONAL REGISTRATION:
Professional Engineer – Washington State #32988 - 1996
MWBE Certification #M6F6421271 - 2010
PROJECT EXPERIENCE:
AAC N 105th and Northgate Way TIB
MP Stormwater Engineering was fortunate to team with Parsons Brinckerhoff for this SDOT 1.4
mile paving project extending from Greenwood Ave to Corliss Ave. The project lies within
three major drainage basins and will require new drainage conveyance. Because of the full
reconstruction of the outer lanes and new 5 foot sidewalks and curb ramps, water quality and
flow control facilities were required. MP Stormwater Engineering was responsible for all
hydrologic and hydraulic modeling for the project. MGSFlood models were developed for each
detention pipe, Filterra, and Stormfilter unit leading to the eight outfalls within the three major
drainage basins. Inlet spacing and gutter calculations were also completed. Parsons
Brinckerhoff, Tye Simpson, 206-382-5200
MGSFlood Software Training
MGS Software hired MP Stormwater Engineering to teach several of the MGSFlood training
classes held throughout western Washington. MGSFlood is a continuous simulation hydrologic
model used in transportation projects to quantify stormwater runoff and design stormwater
management facilities for flow control and runoff treatment. Specific examples in the class
include how to design ponds, bioretention cells, infiltration facilities, and compost amended
vegetated filter strips. Designers from Seattle Public Utilities, Pierce County, Washington State
Department of Transportation and numerous private consultants have attended these classes.
MGS Software, Bruce Barker, 253-841-1573
Dry Creek Pedestrian Trail Bridge: City of Port Angeles hired Exeltech Consulting Inc. to
design and construct a new pedestrian trail bridge over Dry Creek. MP Stormwater Engineering
was responsible for providing the Final Bridge Hydraulic Report. The City of Port Angeles’s
Urban Services Standards and Guidelines for Stormwater was applied to determine stormwater
management requirements for runoff treatment and flow control. USGS Regression Equations
were used to determine basin flows. A HECRAS model was developed to determine water
surface elevations and scour potential. Significant side slope erosion required a close look at offsite flows and bridge deck flows draining towards the abutments and a review of potential lateral
channel migration was also included in the report. Exeltech, Karl Kirker, 360-357-8289
Tibbetts Creek Culvert Replacement Interstate 90: Hydraulic engineer responsible for the
hydrologic and hydraulic analysis of replacing 4 48” diameter culverts beneath Interstate 90. A
HEC-RAS analysis of this site was performed to include the effects of structures beneath local
frontage roads immediately upstream and downstream. Numerous runs were necessary due to
the different combinations of proposed structures at each of these structures. HY-8 analyses
were also completed to design the structures for fish passage in accordance with Washington
State Department of Fish and Wildlife (WDFW) design standards. WSDOT, Laura Claywell,
206-440-4309