Form

Design Information Sheet

If you provide the following information, we can give you a design cut sheet for your application and water quality calculations based on your jurisdiction. (Most of the data requested below can be found on your pipe chart; specifically, for the pipe flowing to the CST water quality device.)
Date*

MonthDayYear
Engineer’s structure #
Surface Type:

TrafficNon-Traffic
Surface elevation at device:
(Rim)
Unit Located Below Pond:

YesNo
Unit Configuration:
Straight in and out is best left or right entry or exit is ok at 90 deg. please call for other angles.
SITE USAGE (Commercial, Residential, etc):
Contributing Areas (For additional basins use another sheet)
Total On-Site Area: (Tributary)
Acres
On-Site Impervous (Pick one to enter its value)

Acres%Rat. C
Impervous (Acres)
Acres
Impervous (%)
%
Impervous (Rat. C)
Rat. C
Off-Site Area: (Tributary)
Acres
To Be Treated?

YesNo
Off-Site Impervous (Pick one to enter its value)

Acres%Rat. C
Impervous (Acres)
Acres
Impervous (%)
%
Impervous (Rat. C)
Rat. C (Pick one)
Pipe In Size (Type)
Type
Pipe in Size (Slope)
Slope (Ex. 18” CMP @ 1.50%)
Pipe Out Size (Type)
Type
Pipe Out Size (Slope)
Slope (Ex. 18” CMP @ 1.50%)
Pipe Invert into Device:
Pipe Invert Into
Pipe Invert Out:
Pipe Invert Out (See Note)
IF YOU ARE JUST BEGINNING YOUR DESIGN, FILL IN WHAT YOU CAN AND WE WILL GET BACK TO YOU

NOTE: Site descriptions can help us lower your treatment flow rates. A lower percentage of impervious will result in a lower water quality flow in most areas. Invert out of our device will normally be 0.10 or 0.20 feet below the invert in. We can make this less, if your pipe slopes are < 1 percent, but larger drops disrupt the treatment process.
Maximum Design flow in pipe to WQ unit:
WQ unit
cfs in
year storm. (Ex. 25-yr. storm)
Water Quality Rule:
WQ Flow (if specified):
Governing Jurisdiction:
(City/County, State)
Note: Maximum design flow is from your pipe chart. We will research the exact water quality flow standard for your jurisdiction. If there is no standard a “generic” specification, such as “1 inch first flush” depth will be utilized.
Your Design Firm
Firm Name
Address

Street Address

Street Address Line 2

CityState / Province

Postal / Zip Code
Email
example@example.com
Website
Website URL
Engineer’s Job Name :

First NameLast Name
Engineer’s Job Number:
Engineer’s AutoCAD version:
Autocad Version
Note: We will email you a drawing file of your site-specific design and your site calculations if you provide an email address. Any important information you can add, such as details on receiving waters, etc. will help us provide you with a more powerful presentation to your local jurisdiction.
Attach file(s) (.pdf, .docx, .jpg, .png) (optional)

Cancelof
Sending a “PDF” or “DWG” file of your grading and drainage plan sheet will facilitate design.

Email pertinent information to: JohnMoll@crystalstream.com. Normal turnaround is 2 to 10 business days. Please call us at 800-748-6945 if you have a deadline date to meet.
Should be Empty:

Design Information Sheet