SERVICES / LID & WQMP DESIGN
LID & WQMP DESIGN
Low Impact Development and Water Quality Management Plan services to meet California regulatory requirements.
NAVIGATE STORMWATER COMPLIANCE
California's stormwater regulations are among the most stringent in the nation. Whether you're developing a single-family lot, a commercial center, or an industrial campus — a properly prepared WQMP is required by most municipalities before permits are issued.
Pumps By Design provides Low Impact Development (LID) design and Water Quality Management Plan (WQMP) documentation services to help your project meet permit requirements efficiently — without unnecessary redesigns or agency delays.
We work with civil engineers, developers, and contractors throughout Southern California to prepare, submit, and secure agency approval for WQMPs.
WHAT WE PREPARE
- WQMP document (Preliminary & Final)
- LID site design strategy
- BMP selection and sizing calculations
- Hydromodification analysis
- Operations & Maintenance (O&M) plan
- Exhibit maps and drainage area delineation
- Agency submittal coordination
- Response to agency comments (RFI support)
OUR LID & WQMP SERVICES
LID COMPLIANCE DESIGN
Low Impact Development design strategies that manage stormwater at the source using infiltration, retention, and biofiltration techniques.
WQMP DOCUMENTATION
Complete Water Quality Management Plan documentation prepared to meet local MS4 permit requirements and agency approval standards.
STORMWATER MANAGEMENT
Detention, retention, and treatment BMP design to control runoff volume and quality in compliance with regional water board standards.
REGULATORY COORDINATION
We coordinate directly with local agencies, municipal engineers, and review boards to get your WQMP approved efficiently.
BEST MANAGEMENT PRACTICES (BMPs)
BIORETENTION / RAIN GARDENS
Vegetated basins that capture, filter, and infiltrate stormwater through engineered soil media.
PERMEABLE PAVEMENT
Permeable concrete, asphalt, or pavers that allow stormwater to infiltrate rather than run off.
INFILTRATION BASINS & TRENCHES
Underground or surface infiltration systems sized to capture design storm volumes and allow percolation.
VEGETATED SWALES
Grass-lined conveyance channels that slow, filter, and infiltrate stormwater runoff.
WET PONDS / RETENTION BASINS
Permanent water bodies that provide volume control and pollutant settling for large drainage areas.
PROPRIETARY TREATMENT DEVICES
Hydrodynamic separators and media filters for constrained sites where land area is limited.
AGENCY EXPERIENCE
We've submitted and secured WQMP approvals with agencies across Southern California. Our familiarity with local review standards means fewer revision cycles and faster approvals for your project.
- San Bernardino County Flood Control
- Los Angeles County DPW
- Riverside County Flood Control
- City of Ontario Public Works
- City of Rancho Cucamonga Engineering
- Regional Water Quality Control Board (Santa Ana Region)
WHO WE WORK WITH
CIVIL ENGINEERS
We supplement your team with WQMP preparation, freeing you to focus on grading and infrastructure design.
DEVELOPERS & OWNERS
We handle the WQMP process end-to-end so you can move your project through entitlements without delays.
CONTRACTORS
Need a WQMP before permits are issued? We turn around preliminary WQMPs quickly to keep your timeline on track.
PROJECT EXAMPLES
Mixed-Use Development WQMP — Rancho Cucamonga
Prepared full WQMP documentation for a 12-acre mixed-use project, incorporating bioretention and underground infiltration chambers to meet local MS4 permit requirements.
Industrial Facility LID Plan — Ontario
Designed a low-impact development plan for a 5-acre warehouse site using permeable parking areas and vegetated swales, achieving 100% infiltration compliance.
Residential Tract WQMP — Fontana
Managed WQMP approval for a 150-lot residential subdivision, coordinating with the City's public works department from initial submittal through final approval.
NEED A WQMP FOR YOUR PROJECT?
Contact us with your project details and we'll provide a scope and timeline for your WQMP preparation. Fast turnarounds available for time-sensitive projects.