Could you please check the following for any possible errors? semi-colons, commas, two separate sentences, etc?

A new and exciting change is about to premiere for all Peachtree Professional Park personnel. Beginning June 1, 2013, the following dress code will be implemented in all Peachtree Professional Park offices:
1. All clerical and professional personnel will wear white slacks or skirts. These garments should be comfortably sized, allowing plenty of room for bending and movement. Tight-fitting garments, such as spandex pants, are not permitted.
2. Employees may wear any color blouse or shirt. The blouse or shirt must have a sleeve and may not be low-cut or overly revealing.
3. Peach-colored lab coats will be provided for each employee. The lab coats will be worn over the garments described above and will bear the emblem of Peachtree Professional Park on the pocket. Clean lab coats will be supplied by a local laundry service daily at no expense to employees. Lab coats are not to leave the office and are to be placed in designated laundry bags at the end of each work day.
4. White, professional shoes are to be worn by all employees with white socks, hose, or nylons; employees are reminded that shoes are to look clean and polished.

The new dress code should be a welcome change from the current and traditional “all-white” look. Lab coats will help protect other clothing.

I am looking forward to seeing all of you in the new attire. Remember, June 1, marks the premiere of this “peachy” idea!

A new and exciting change is about to premiere<~~I'm not sure I'd choose "premiere" for this sentence, unless it is something you KNOW all employees are looking forward to! for all Peachtree Professional Park personnel. Beginning June 1, 2013, the following dress code will be implemented in all Peachtree Professional Park offices:

1. All clerical and professional personnel will wear white slacks or skirts. These garments should be comfortably sized, allowing plenty of room for bending and movement. Tight-fitting garments, such as spandex pants, are<~~tense switching not permitted.
2. Employees may wear any color blouse or shirt. The blouse or shirt must have a sleeve<~~only one sleeve? and may not be low-cut or overly revealing.<~~Isn't this redundant?
3. Peach-colored lab coats will be provided for each employee. The lab coats will be worn over the garments described above and will bear the emblem of Peachtree Professional Park on the pocket. Clean lab coats will be supplied by a local laundry service daily at no expense to employees. Lab coats are not to leave the office and are to be placed in designated laundry bags at the end of each work day.
4. White,<~~delete comma professional shoes are to be worn by all employees with white socks, hose, or nylons; employees are reminded that shoes are to look<~~Shoes are to look clean or to be clean? clean and polished.

The new dress code should be a welcome change from the current and traditional “all-white” <~~delete quotation marks, unless you are truly quoting someone look. Lab coats will help protect other clothing.

I am looking forward to seeing all of you in the new attire. Remember, June 1,<~~delete comma marks the premiere of this “peachy”<~~delete quotation marks, unless you are truly quoting someone idea!

http://grammar.ccc.commnet.edu/grammar/commas.htm

http://grammar.ccc.commnet.edu/grammar/marks/quotation.htm

Here's the corrected version of the text with any errors fixed:

A new and exciting change is about to premiere for all Peachtree Professional Park personnel. Beginning June 1, 2013, the following dress code will be implemented in all Peachtree Professional Park offices:

1. All clerical and professional personnel will wear white slacks or skirts. These garments should be comfortably sized, allowing plenty of room for bending and movement. Tight-fitting garments, such as spandex pants, are not permitted.

2. Employees may wear any color blouse or shirt. The blouse or shirt must have a sleeve and may not be low-cut or overly revealing.

3. Peach-colored lab coats will be provided for each employee. The lab coats will be worn over the garments described above and will bear the emblem of Peachtree Professional Park on the pocket. Clean lab coats will be supplied by a local laundry service daily at no expense to employees. Lab coats are not to leave the office and are to be placed in designated laundry bags at the end of each work day.

4. White, professional shoes are to be worn by all employees with white socks, hose, or nylons; employees are reminded that shoes are to look clean and polished.

The new dress code should be a welcome change from the current and traditional "all-white" look. Lab coats will help protect other clothing.

I am looking forward to seeing all of you in the new attire. Remember, June 1 marks the premiere of this "peachy" idea!

As for checking for possible errors, you can follow these steps:

1. Read the text carefully: Start by reading the entire text to understand the overall message and purpose.

2. Focus on punctuation: Check if all sentences end with a period or question mark when appropriate. Look out for any missing or unnecessary punctuation marks such as semicolons or commas.

3. Ensure clarity and coherence: Verify that the ideas and sentences flow logically and coherently from one to another. Make sure that separate ideas are expressed in separate sentences.

4. Proofread for grammar and spelling: Carefully examine the text for any grammar or spelling mistakes, paying attention to verb agreement, subject-verb agreement, capitalization, and word usage.

By following these steps, you can effectively check a piece of text for errors and ensure its accuracy and clarity.