Dr. SaMeH S. Ahmed

Associate Prof. of Environmental Engineering

Mandatory recyclin

Mandatory recycling

Programs that by law require consumers to separate trash so that some, or all recyclable materials are recovered for recycling rather than going to landfills

The San Francisco Mandatory Recycling and Composting Ordinance (No. 100-09) is a local municipal ordinance requiring all persons located in San Francisco to separate theirrecyclables, compostables and landfilled trash and to participate in recycling and composting programs. Passed by the San Francisco Board of Supervisors in 2009, it became the first local municipal ordinance in the United States to universally require source separation of all organic material, including food residuals

000s to present

Having invested in the infrastructure to increase organics and recycling diversion, San Francisco realized a 50 percent diversion rate shortly after the Fantastic Three program was officially introduced. However, the city decided to pursue higher diversion rates than those required by the state for several reasons. First, the 1997 Sustainability Plan adopted by the Board of Supervisors, included a long-term goal "to maximize sustainable uses of natural resources and to eliminate solid waste generation in the City and County of San Francisco."[11] Additionally, Alameda County adopted Measure D which, "set a goal of achieving a 75 percent waste diversion rate by 2010 and as a condition of the Waste Disposal Agreement for disposing San Francisco waste in the Altamont Landfill in Alameda County, the City was required to recycle or divert waste at the same or greater level than that of East Bay (Alameda County) jurisdictions using the Altamont landfill."[11] As a result, the Board of Supervisors passed the Zero Waste Goal (Resolution No. 007-02-COE) in 2002, requiring San Francisco to divert 75 percent of its waste by 2010 and to achieve zero waste by 2020.[11]

While the City's investment in the Fantastic Three program demonstrated its ability to achieve high diversion rates and encouraged the creation of new goals, the Zero Waste resolution built the framework from which new waste reduction legislation could be drafted. Shortly after the Zero Waste Goal passed, the City began to adopt a series of waste reduction policies as a means to meet its goal of zero waste. A timeline of select waste-reduction legislation is listed below:

  • 2004 Green Building Ordinance
    • Goal: Requires city construction to manage debris and provide adequate recycling storage space in buildings
  • 2006 Construction and Demolition Debris Recovery Ordinance
    • Goal: Requires C&D projects to use city-registered transporters and processing facilities to increase debris recovery
  • 2006 Food Service Waste Reduction Ordinance
    • Goal: Requires restaurants and food vendors to not use styrofoam food service ware and instead use food ware that is recyclable or compostable
  • 2007 Plastic Bag Reduction Ordinance
    • Goal: Requires the use of compostable plastic, recyclable paper and/or reusable checkout bags by supermarkets and drugstores

There were a number of other San Francisco waste reduction policies passed during this time and most of them focus on city government operations. For example, the Mayor's Executive Order on Bottled Water bans the purchase of bottled water with city funds while the Precautionary Purchasing Ordinance, "requires city departments to purchase products that maximize post-consumer recycled content and recyclable or compostable materials, and that favor durability, repairability, and reuse." All of the aforementioned policies have had large impacts on diversion rates and by the end of 2007, the City had reached 72 percent. However, it was clear that increased participation in the residential curbside collection program was desirable if San Francisco were to reach zero waste by 2020. According Jack Macy, Commercial Zero Waste Coordinator for the City of San Francisco, if everyone in San Francisco participated in the program by separating all the materials accepted, a 90 percent diversion rate would be achievable. San Francisco realized that voluntary participation would not suffice, and in 2009, the Board of Supervisors passed the Mandatory Recycling and Composting Ordinance, requiring all persons in San Francisco to separate their recyclables, compostables and landfilled trash and to participate in recycling and composting programs.

The mandatory ordinance represents further investment in recycling infrastructure and in San Francisco's goal of zero waste. It has provided the leverage of law and participation rates have increased as a result. Since the mandatory ordinance went into effect, "composting has increased by 45 percent, and the City is now sending nearly 600 tons of food scraps, soiled paper, and yard trimmings to Recology's compost facilities daily, up from 400 tons a year ago." In August 2010, San Francisco Mayor, Gavin Newsom, announced the city's diversion rate had reached 77 percent.

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Office hours

Sunday:     12-1

Monday:     12-1

Tuesday:     10-12

Wednesday: 10-11

You are welcome to contact me by at any time

You  may also contact me via WhatsApp group, ..

Ext. 2524

Civil Eng. Students

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Love your department and be proud of your field of study

As we approaching the second midterm exams..  Get ready and remember our offices are open to answer you . do not hesitate to .contact me if you have difficulties

For CE 370 students : I do apologize for did not attend the extra lab session that proposed to be on Wednesday at 6 am.  Sorry

Good Luck


My Dear Students

Please visit the  announcement box for the relevant course and make sure that you can download and upload easily, otherwise

.contact me  to sort it out

There will be an orientation session in the midell of this term to help you select your track in Civil and Environmental Engineering


Special Issue

Electrical Power Resources: Coal versus Renewable Energy

  Published Online on January 2016

Mining Engineering

Mining engineering is an engineering discipline that involves practice, theory, science, technology, and the application of extracting and processing minerals from a naturally occurring environment. Mining engineering also includes processing minerals for additional value.

Environmental Engineering

Environmental engineers are the technical professionals who identify and design solutions for    environmental problems. Environmental engineers provide safe drinking water, treat and properly dispose of wastes, maintain air quality, control water pollution, and remediate sites contaminated due to spills or improper disposal of hazardous substances. They monitor the quality of the air, water, and land. And, they develop new and improved means to protect the environment.


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College of Eng. MU



Universities I've worked in

Assuit University (Home University), Egypt

Imperial College, London, UK

Faculty of Engineering, Al-Mergeb University, Libya

King Saud University, KSA

,Majmaah University

Majmaah University has a very nice web page that provide  all information regarding deanships, colleges, activities,  campuses and many others. Search your request in

Also visit

My Academic Pages


and give me


How many red balls we need to make balance 


Egypt vs Tunisia (Handball final)  30/1/2016

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Course 2016/17-1

  1. Computer Applications in Surveying  CE 473
  2. Surveying 1 CE 370
  3. Photogrammetry CE 474
  4. Surveying II  CE 371
  5. Design I  (round 4) CE 498

The Rules of Life

Rule #7


Member of the Editorial Board: " Journal of Water Resources and Ocean Sciences"  2013


Participating in The Third International Conference on Water, Energy and Environment,(ICWEE) 2015 - American University of Sharjah, UAE 24-26 March 2015 with a Paper and Poster

New article

Recovery of Titania from Waste-Sludge of Majmaah Water Treatment Plant

"Production of Titania Nano-particles from Wast-


Coming soon

Results of M2 CE311

Student Conference

Participation  in the 6Th Student Conference

With a paper and oral presentation

From the Senior Design Project CE499 -35

See inside, the paper, and presentation

CE 370 Course

Surveying  I -  CE 370 - 2016-2017-1

Power point


Lecture notes

Second Midterm Exam


Model Answer
Inside, please follow:

Student Performance Records

CE 371 Course

Surveying II - CE 371 - 2016-2017-1


First midterm exam



See Inside

Student Performance Records

CE473 Course

Computer Applications in Surveying

CE 473


Power point


Exams + Quizzes


CE 474 Course

2015-2016-2 - Photogrammetry  CE474

Available 0-1-2-3-4 Power point


Quizzes 2 and 3 with model Answer

Available Chapter 1,2,3,4,5 Lecture notes

Report 1  Cameras Report


60 marks Exams

See Inside

Student Performance Records

CE 360 Course

Environmental Engineering 1

CE 360: Environmental Engineering 1


Y PP0-1-2-3,4 Power point
Y 1,2,3,4,5 Chapters

Water quality Poster + Climate Change Reports
will be announced (Quiz #2 will be using D2L- Online Quizzes


Quizzez 2,3 and 4 with model answer and results Exams and results

GE 306 Course

Engineering Report Writing

GE 306: Engineering Report Writing

CE 499 Course

Senior Design 2 - CE 499

Meeting on 14-4-2015

Second Best paper from Senior Design Projects in 2015

Paper title:

Evaluation of Groundwater Quality Parameters using Multivariate Statistics- a case Study of Majmaah, KSA


Abdullah A. Alzeer

Husam K. Almubark

Maijd M. Almotairi

CE 360-Summer Course

Environmental Engineering I

Welcome to CE360 second Term 2015-2016 

Engineering Practice

 Engineering Practice GE 307

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Contact me

Mobile: 00966598311652

[email protected]

Civil and Environmental Engineering Department
College of Engineering, Majmaah University
Majmaah, P.O. 66, 11952, KSA

Thank you

Your frequent visit to my website has helped  a lot to get the 2nd place in the university competition in the  year 1434-2013... Thanks very mush and please keep following my work

زيارتكم المتكررة لموقعي ساهمت في حصولي على المركز الثاني لاحسن المواقع الشخصية بجامعة المجمعة ...لكم جميعا خالص شكري وتقديري

CE 212 - Summer Course

Properties and Strength of Materials 1

CE 212

Y from PP0 to PP 6 + PDF Power points
Y Midterm #2 + Model Answer + results Exams
Y lab 3 Labs

Solution of Quiz 4 + Results HW

CE 311- Summer Course

Soil Mechanics and Foundation Engineering

CE 311

M2+ model Answer + PP 1-9 = PDF 1-9 all are available

Sheets 2 + 4 with model Answers

Results of M2

إحصائية الموقع

عدد الصفحات: 1412

البحوث والمحاضرات: 1544

الزيارات: 65120