Stormwater Management Services in Lower Merion, PA

Stormwater is one of the most common reasons projects are delayed in Lower Merion. A slight change in impervious surface, a missed slope detail, or a drainage plan that doesn’t line up with township expectations can bring everything to a stop. Reviews drag on. Costs rise. And your timeline slips.
That’s why stormwater can’t be an afterthought. It needs to be planned early and planned right. At Padula Engineering, we design stormwater systems that fit the land, meet the code, and hold up under township review. From single-lot builds to larger developments, we help you stay ahead of the process and avoid costly surprises later on.

Why Stormwater Plans in Lower Merion Often Get Sent Back

Township reviews in Lower Merion are thorough, and stormwater is one area they don’t overlook. Plans often fail because they miss runoff thresholds, skip over grading details, or rely on the wrong drainage calculations. Some plans select the wrong type of Best Management Practice (BMP). Others don’t clearly show how water flows across the site.
Padula Engineering catches these problems early. We focus on accuracy and clarity from the start. Our team knows precisely what Lower Merion’s reviewers look for, so your plans move forward smoothly.

What Our Stormwater Designs Include

Stormwater management isn’t just pipes or a basin. It’s a coordinated system built around your property’s characteristics. We carefully plan every part, from runoff calculation to final grading. Here’s what our designs cover:

Runoff Thresholds and Volume Calculations

We first measure your site’s existing runoff and compare it to the proposed conditions. Lower Merion sets clear thresholds for runoff control. If your project crosses those thresholds, you’ll need a detailed stormwater system. We do these calculations early so the design process stays efficient and clear.

System Design and BMP Selection

Choosing the right BMP matters. The wrong selection can slow down approval or fail during heavy rain. We carefully evaluate soils, slopes, and space available. Our systems might include rain gardens, underground storage, or infiltration beds. We select options that work best for your specific lot and Lower Merion’s requirements.

Grading, Flow Control, and Drainage Tie Ins

Grading controls how water moves across your site. We design clear grading plans showing slopes, swales, and drains. Our plans show exactly how runoff moves into storage areas and drains safely off-site. Proper grading prevents standing water and erosion issues during construction and after completion.

Engineering Reports and Review Packages

Lower Merion expects clear, detailed stormwater reports. We prepare sealed engineering drawings and complete drainage calculations. Our submissions meet township guidelines, ensuring smoother review. If the township requests revisions, we handle updates promptly to keep the process moving forward.

Our Process for Getting Plans Approved

Good stormwater design follows clear steps. Padula Engineering keeps your plans organized and on schedule. We handle each phase clearly and efficiently.

Site Review and Initial Concept

We begin by reviewing your site. We check existing conditions, zoning restrictions, and drainage patterns. This review helps us see potential issues upfront, avoiding later surprises.

BMP Sketch and Drainage Strategy

Next, we outline possible stormwater solutions. We sketch potential locations for BMPs and drainage routes. Early sketches help identify the best approach and save time later in the design phase.

Final Design and Drainage Report

Once we agree on the best stormwater solution, we complete detailed designs. We finalize grading, storage sizing, drainage connections, and complete calculations. We then prepare a thorough drainage report matching Lower Merion’s requirements.

Response to Township Comments

Township reviews usually bring comments or questions. We respond quickly with clear revisions. We handle all resubmissions and follow up closely, helping your project stay on track to approval.

Frequently Asked Questions About Stormwater in Lower Merion

Here are answers to common stormwater management questions in Lower Merion:
Impervious surfaces prevent water from soaking into the ground. Examples include roofs, patios, driveways, and sometimes even gravel areas. We can clarify exactly what’s considered impervious on your project.
Lower Merion typically requires a drainage system if your project adds significant impervious surface area, usually more than 1,500 square feet. We confirm the exact requirements at the beginning of your project.
Usually not. Each site has unique conditions, and township rules may have changed since your old plan. We always recommend a fresh evaluation to avoid review delays.
A BMP (Best Management Practice) is a feature designed to manage stormwater runoff. Examples are rain gardens and seepage beds. We select BMPs based on your site’s soils, slopes, space, and township guidelines.
Lower Merion reviews generally take around three to five weeks. Clear and complete submissions reduce the likelihood of lengthy delays.

Understanding Lower Merion’s Site Conditions

Stormwater management in Lower Merion requires local knowledge. Many properties have steep slopes, older drainage infrastructure, or tight lot sizes. Some areas fall within historic or environmentally protected zones. These factors complicate stormwater design and approval.
Padula Engineering has designed stormwater plans across Lower Merion. We understand local challenges and know exactly how to manage them. We ensure your design fits your specific site conditions and aligns with township expectations, making approvals faster and construction easier.

Get the Right Stormwater Plan from the Start

Clear, accurate stormwater design helps you avoid delays and surprises. Padula Engineering handles every step clearly and effectively. We design site-specific systems that meet Lower Merion’s rules and work in real life.

If you’re planning a project in Lower Merion, talk to us. We provide honest guidance and practical stormwater solutions designed to pass review the first time.

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