Department of Public Works & Engineering Planning & Development Services Division CALCULATION OF IMPERVIOUS PERCENTAGE FOR USE ON SINGLE FAMILY RESIDENTIAL LOTS OF 15,000 SQUARE FEET IN AREA.
Open form follow the instructions
Easily sign the form with your finger
Send filled & signed form or save
How to fill out the CE1207 Calculation Of Impervious Percentage Form.doc online
The CE1207 Calculation Of Impervious Percentage Form is essential for determining the impervious area on single-family residential lots of 15,000 square feet or less. This guide provides step-by-step instructions to assist users in accurately completing the form online.
Follow the steps to effectively fill out the CE1207 form.
- Click the ‘Get Form’ button to access the form and open it in your preferred online editor.
- Begin by entering the project number into the designated field. This will help in organizing your submissions.
- Next, input the address of the property in the specified space. Ensure that the address is accurate to avoid any processing errors.
- Proceed to enter the values for each impervious area in square feet and acres as applicable. This includes existing structures such as the house, detached garage, accessory structures, driveways, sidewalks, swimming pools, new additions, and any other relevant surfaces.
- Calculate the total area of impervious cover by summing the values you entered in the previous step. Input this total in the appropriate field.
- Next, enter the area of the lot in the corresponding field. This measurement is vital for calculating the percentage of impervious area.
- To find the percentage of impervious area, use the formula (Total impervious area ÷ Area of lot) X 100 and record it in the percentage field.
- If the percentage exceeds 75%, be aware that a detention volume rate of 0.20 cubic feet per square foot of impervious cover is required.
- Finally, review all entries for accuracy. Once confirmed, you can save changes, download, print, or share the completed form as needed.
Complete your CE1207 Calculation Of Impervious Percentage Form online today for efficient processing.
Experience a faster way to fill out and sign forms on the web. Access the most extensive library of templates available.
Related content
This form is a tool to assist customers in determining the amount of impervious area as a...
Get answers to your most pressing questions about US Legal Forms API.
What is the allowable impervious surface area ratio?
Allow for a maximum Impervious Surface Ratio (I.S.R.) not to exceed 70% of the gross site area. Impervious Surface Ratio: The impervious surface ratio is a measure of the intensity of land use. The maximum Impervious Surface Ratio is sixty percent (60%) of the total site area.
How do you calculate pervious?
To calculate a single pervious curve number for each subbasin, an area-weighted value is calculated from all the individual pervious area curve numbers. Percent impervious is calculated by dividing the total impervious area per subbasin by the total subbasin area.
What is impervious cover examples?
Impervious cover is any type of human-made surface that doesn't absorb rainfall, including: Rooftops. Patios. Driveways, paved and unpaved. Sidewalks. Roadways. Parking lots, paved and unpaved. Some decks.
How do you calculate impervious cover percentage?
To calculate the percent of existing and proposed impervious surfaces on your lot: divide the total square footage of existing impervious surfaces by the total square footage area of your lot then multiply by 100.
What is the typical percent impervious?
Most developed land uses exceed the threshold of 10—15 percent impervious cover, which defines a healthy watershed or stream system.
How do you calculate impervious area?
Impervious surface areas include all the hard top manmade surfaces within the Protected Shoreland Area (PSA). After determining the ar- ea of each of these surfaces, add them together and divide their total by the area of the PSA.
Use professional pre-built templates to fill in and sign documents online faster. Get access to thousands of forms.
If you believe that this page should be taken down, please follow our DMCA take down process here.