CITY OF LOS ANGELES DEPARTMENT OF PUBLIC WORKS BUREAU OF CONTRACT ADMINISTRATION WET WEATHER EROSION CONTROL PLAN

Transcription

1 CITY OF LOS ANGELES DEPARTMENT OF PUBLIC WORKS BUREAU OF CONTRACT ADMINISTRATION WET WEATHER EROSION CONTROL PLAN Revised 10/2009

2 FOREWORD On July 8, 1970 the Board of Public Works adopted for general guidance purposes an erosion control procedure which was developed by the Board Staff Engineer, the Bureaus of Contract Administration, Engineering, Street Services, Accounting, and the Department of Building and Safety. The Inspector of Public Works was designated as the Board's authorized representative to administer the program. July 2, 2002 the Board of Public Works adopted the Development Best Management Practices Handbook part A Construction Activities and Development Best Management Practices Handbook part B Planning Activities. This manual outlined the requirements for the Wet Weather Erosion Control Procedures and is the basis for the Wet Weather Erosion Control Plan. Effective functioning of the program requires considerable liaison and coordination between the City agencies involved, particularly the Bureaus of Contract Administration, Street Services, Engineering and the Department of Building and Safety. Operational experience with the existing program has proven to be effective. The purpose of this manual is to establish a uniformed guideline for City personnel to follow during the rainy season. The information contained in this manual has been compiled from documents that have been approved and adopted by the City of Los Angeles Board of Public Works and Bureau procedures for the enforcement of temporary and emergency erosion control.

3 TABLE OF CONTENTS PART A BUREAU OF CONTRACT ADMINISTRATION PROCEDURES FOR ENFORCEMENT OF THE WET WEATHER EROSION CONTROL PLAN ACRONYMS AND ABBREVIATIONS...PAGE 2 BUREAU OF CONTRACT ADMINISTRATION EROSION CONTROL TIME LINE PAGE 3 PROCEDURES EROSION CONTROL COORDINATOR... PAGE 5 PROCEDURES FOR DISTRICT LEVEL INSPECTION...PAGE 6 PROCEDURES FOR DISTRICT MANAGER...PAGE 13 PART B WET WEATHER EROSION CONTROL PLAN AS ADOPTED BY THE BOARD OF PUBLIC WORKS HISTORY GENERAL REQUIREMENTS DEVELOPMENT BEST MANAGEMENT PRACTICES HANDBOOK PART A CONSTRUCTION ACTIVITES 3 rd Edition...PAGE 16 BUREAU OF ENGINEERING EROSION CONTROL NOTES FOR TEMPORARY EROSION CONTROL..PAGE 22 PROCEDURE FOR THE ADMINISTRATION OF TEMPORARY EROSION CONTROL AS ADOPTED BY THE BOARD OF PUBLIC WORKS MARCH PAGE 25 ORDINANCE NUMBER PAGE 28 ORDINANCE NUMBER PAGE 31 APPENDIX: TABLE OF PLATES...PAGE 37 1

4 ACRONYMS AND ABBREVIATION BCA Bureau of Contract Administration BCAECC Bureau of Contract Administration Erosion Control Coordinator BMP Best Management Practices BOE Bureau of Engineering BOS Bureau of Sanitation BPW Board of Public Works CA Contractor Activity CEQA California Environmental Quality Act CZARA Coastal Zone Act Reauthorization Amendments of 1990 C&A Covenant and Agreement DCP Los Angeles Department of City Planning DPW Los Angeles Department of Public Works EAF Environmental Assessment Form EIR Environmental Impact Report ECC Bureau of Contract Administration Erosion Control Coordinator EPA United States Environmental Protection Agency ESC Erosion and Sediment Control GPL California General Plan Law HC Hydrocarbons LADBS Los Angeles Department of Building and Safety LAMC Los Angeles Municipal Code LARWQCB Los Angeles Regional Water Quality Control Board MS4 Municipal Separate Storm Sewer System MEP Maximum Extent Practicable (statutory standard) MND Mitigated Negative Declaration NOI Notice of Intent NPDES National Pollutant Discharge Elimination System O&G Oil and Grease O&M Operation and Maintenance RGO Retail Gasoline Outlets RWQCB Los Angeles Regional Water Quality Control Board SIC Standard Industrial Classification SWPPP Storm Water Pollution Prevention Plan SWRCB State Water Resources Control Board (California) SUSMP Standard Urban Stormwater Mitigation Plan ULARA Upper Los Angeles River Area WEF Water Environment Federation WPD Watershed Protection Division WWECP Wet Weather Erosion Control Plan

5 PART A BUREAU OF CONTRACT ADMINISTRATION EROSION CONTROL TIMELINE JULY 1 TO APRIL 15 July 1 July 15 The Contract Administration s Erosion Control Coordinator (ECC) sends a reminder letter to the Department of Building and Safety via the General Services Division Manager (PLATE 1 pg 38) requesting a list of grading jobs that may require temporary erosion control plans. The ECC also sends a memorandum to all District Managers requesting a list of all B-Permits and Work Order projects that will require temporary erosion control in the respective districts. (PLATE 2 pg 39) The Department of Building and Safety submits to the General Services Division Manager a list of grading jobs that may require temporary erosion control plans. (PLATE 32 pg 70) The General Services Division Manager sends the list to the ECC. The ECC reviews and separates the list by districts. The list is then distributed to the respective Bureau District Managers. District Managers shall compile a list of Public Works projects that may need temporary erosion control plans. This list is then combined with the list issued by the Department of Building and Safety. District Managers will assign inspector(s) to evaluate projects in their areas. From these evaluations, District Managers determine which sites will require an ordinance letter (PLATE 3 pg 40). Aug 1 Sept 2 Sept 15 The Bureau of Contract Administration (Main Office) issues an ordinance letter to the owner, permittee informing them to submit temporary erosion control plans to the Bureau of Engineering for approval. Plans must be submitted, review, and approved before the September 15 deadline of each season. The Bureau of Engineering notifies Contract Administration and the Department of Building and Safety of projects which have submitted plans. The Bureau of Contract Administration Disrtict Managers issue Notices of Non-Compliance to the permittees that have failed to get their erosion control plans approved. (PLATE 22 pg 59). Desilting basins must be constructed and operational. 3

6 Sept 20 Oct 1 Oct 6 Apr 15 The Department of Building and Safety notifies Contract Administration of any non-compliances regarding completion of any desilting basins on projects under their jurisdiction, no later than this date. Field Inspectors assigned to these sites will issue a Notice of Non-Compliance to any project under the jurisdiction of the Department of Public Works that have failed to complete desilting basins. Beginning of rainy season. Field Inspectors should follow procedures listed on page 6. District Managers should maintain good communications with the Erosion Control Coordinator. All remaining erosion control devices must be in place. Building and Safety shall notify Contract Administration of non compliances regarding completion of the remaining erosion control devices, no later than this date. Field Inspectors assigned to these sites will issue a Notice of Non-Compliance (PLATE 22 pg 59) and to any project under the jurisdiction of the Department of Public Works that have failed to complete the remaining devices. End of rainy season and erosion control. May 1 All original copies of the wet weather inspections are forwarded to the Erosion Control Coordinator. NOTE: THE RAINY SEASON HAS BEEN DEFINED IN THIS MANUAL AS A PERIOD OF TIME BETWEEN OCTOBER 1 THROUGH APRIL 15 EACH YEAR. INSPECTORS ARE REMINDED THAT DURING ANYTIME OF THE YEAR WHEN RAIN HAS BEEN FORECAST AT 40% OR GREATER THE INSPECTOR SHOULD INFORM THE CONTRACTORS OF PERMIT PROJECTS (B-PERMITS AND WORK ORDERS) TO TAKE ACTIONS NECESSARY TO PREVENT ANY TYPE OF RUNOFF FROM ENTERING THE PUBLIC RIGHT OF WAY OR NATURAL WATER COURSE 4

7 ENFORCEMENT OF WET WEATHER EROSION CONTROL PLAN PROCEDURES FOR THE EROSION CONTROL COORDINATOR Prior to July 1 of each year, the Bureau of Contract Administration Erosion Control Coordinator (ECC) requests from the Department of Building and Safety a list of construction projects with grading activities that may require a WWECP. The ECC also requests from all BCA District Managers a list of all B-Permit and Work Order projects that will require a WWECP. ( PLATES 1 & 2 pg 38 / 39 ) In response to the ECC request, the Department of Building and Safety submits a list of grading jobs that may require a WWECP on July 15. The ECC reviews the list and distributes copies to the respective District Manager. (PLATE 32 pg 70 ) Prior to August 1 each District Manager returns the combined list of Public Works and Department of Building and Safety grading sites that require wet weather erosion control plan to the ECC. The ECC creates a master list. A copy of this list is sent to Bureau of Engineering and the Department of Building and Safety. August 1 of each year, the ECC generates and monitors the distribution of the ordinance letters for sites that require submittal of a WWECP. (PLATE 3 pg ) At the end of each month the ECC requests from each District Manager the total number of inspections completed in the respective district. (PLATE 24a pg 61) The ECC then compiles a report of number of erosion control inspections completed through the Bureau and forwards this total to the Bureau of Contract Administration General Manager (PLATE 24 b pg 61) and the Bureau of Sanitation as requirement of the Municipal Storm Water Permit. (PLATE 24c pg 61 ) At the end of each wet weather season the ECC collects the original inspection reports from all District Managers and combines all erosion control reports for storage. 5

8 PROCEDURES FOR DISTRICT LEVEL INSPECTION At the start of each erosion season the district manager shall appoint an Inspector who will be the coordinator and contact with Department ECC for that district. All involved with the inspection of erosion control sites shall adhere to the following procedures. IDENTIFICATION OF INDIVIDUAL EROSION CONTROL SITE: Sites are identified by the Bureau Contract Administration, and the Department of Building and Safety (Grading Division) by districts. When a site has been determined to be a possible candidate for erosion control it is added to a master list and identified by the site address, permit number, (B-permit, Work Order, or Grading Permit) permittee or owner, and the private engineer. Note: The Bureau of Engineering and Building and Safety's Grading Division district boundary lines do not always coincide with the Bureau of Contract Administration's district boundary lines, and may overlap. It is imperative that the Field Inspector communicates and become familiar with Engineers and Building and Safety Inspectors for their assigned area. SITE EVALUATION PROCESS: Shortly after July 15, all District Managers will receive a portion of the Department of Building and Safety grading list with possible sites within their districts. District managers shall review this list and all current Public Works projects in their district. Field inspectors shall be assigned to visit these sites for evaluation and determination if erosion control will be required. Field inspectors should visit all sites assigned to them and determine if the site will require erosion control by using the following criteria. "0" SIDE EXPOSURE The runoff does not affect the Public Right of Way or water course. All runoff drains to private property. Inspected by: Department of Building and Safety only. (PLATE 4 pg 42) SINGLE SIDE EXPOSURE The runoff will affect the Public Right of Way or water course. Inspected by: Contract Administration and the Department of Building and Safety.(PLATE 4 pg 42 ) 6

9 MULTIPLE SIDE EXPOSURE The runoff will affect the Public Right of Way from multiple directions. Inspected by: Contract Administration and the Department of Building and Safety. (PLATE 4 pg 42 ) FLOOD CONTROL CHANNELS AND NATURAL WATER COURSES The runoff may pose a threat to a publicly or privately owned water course (natural or constructed). Some natural streams or wash beds are owned and maintained by the City. These natural water courses in most cases, drain into constructed flood control systems. Inspected by: Contract Administration and Department of Building and Safety. (PLATE 4 pg 42 ) All classifications should be reported to the District Manager and maintained on both lists. NOTE: While inspectors are in the field evaluating sites, they should take notice of any grading work or other locations that are not on the list. If a new location has been discovered in the field, the inspector should issue a Job Memorandum, if before September 1, (PLATE 21 pg 58). After September 1 a Notice of Non Compliance should be issued (PLATE 22 pg 59). Notify the ECC of any additional sites in writing. The ECC will contact the Department of Building and Safety's Grading Division Inspector and the District Engineer of any additional sites to be added. PRE-INSPECTION PROCESS When a site has been determined to require erosion control, the Contract Administration District Inspector will enter the following data on an erosion control site record. Site address, Thomas Guide Map coordinates, current season (i.e ), emergency contact (name and phone numbers), address and if the project is a B-Permit or a Cash Contract, the project title and W.O. number should also be included. Assign each site an identification number. RECORD KEEPING Each inspector assigned to erosion control will be required to keep and maintain accurate records of each visit to an individual site. The inspector s records will require the use of two forms. The first a BCA 328 Erosion form. (PLATE 25 pg 62) The second is Form H which is reproduced from the Development Best Management Practices Handbook, Part A (PLATE 26 pg 63/64). Two copies of each inspection record (BCA 328 Erosion) shall be produced both with wet signatures. Each site record shall have the identification 7

10 number placed in the upper right corner of each form page and photograph. (One copy will stay with the job record and one will go with the Erosion Control Records.) An Individual site record folder for each location shall contain the following: Conditions prior to, during and after each rain, any actions taken, and persons contacted, site visits etc., visits on a specific day, time charges, any special notes i.e. accidents, emergency actions taken, etc. (PLATES 25,29, 31 pgs 62, 67, and 69). A Photograph to record accidents or site conditions prior to taking emergency actions such as requesting Street Services for assistance to resolve a condition which would be charged to a permittee or owner. (Each photograph retained with the project records shall be entered into a photograph log.) A Key Map from the Thomas Guide or another source showing each of the erosion control sites attached to the front of the individual site record folder. (PLATE 27 pg 65 ) A Phone List for all agencies in the inspector s assigned area that are pertinent to erosion control along with all other emergency phone number, including BCA WWEC District Coordinators. ( PLATES 28 and 33 pgs 66/71). **Note: In the event of a Mayor Declared Emergency, the Emergency Rain Conditions Daily Safety Report will be utilized (PLATES 29 and 30 pgs 67/68). EROSION CONTROL PLANS Erosion control plans should be submitted to the Bureau of Engineering by private engineers for B-Permits and Grading Permits. Plans for City Cash Contracts should be submitted by the Project Engineer. After plans have been approved by Engineering and Building and Safety, two sets for each site will be distributed by Engineering to the respective Contract Administration district. One set of plans should always remain in the district office while the other set is given to the assigned field inspector. SITE INSPECTION After the initial evaluation in determining if a site requires erosion control, the next inspection that should be scheduled are for sites that require desilting basins. This inspection should take place on September 15. If this date falls on a weekend the inspection should take place the next working day after this date. If the required basins have not been installed by this date, a Notice of Non- Compliance should be issued. As of October 1, all remaining erosion control devices should be in place per the requirements on the erosion control plans and the Department of Public 8

11 Works Erosion Control Notes. If the remaining requirements have not been met by this date, a Notice of Non-Compliance should be issued. Note: As recognized by the Department of Public Works, the official rainy season and the enforcement of the all required devices starts on October 1 of each year. During the rainy season, (October 1 to April 15) field inspectors will be required to visit each site when rain has been forecast at 40% (prior to rain), during rain and after rain. When rain has been forecast at 40%, inspectors should check each site and evaluate its condition. If all devices are in place and the site appears not to require any additional work, record the status and return during the rain. If a site is lacking devices or additional work is required: 1. Notify the emergency contact person listed on job plans, the contractor or the permittee and advise them of the condition of the site and direct them to resolve the issue. 2. Give the permittee / contractor a realistic time frame which to correct the problem. 3. Issue a Job Memorandum and include the time limit and any charges that may be imposed if Street Maintenance is called out to rectify the problem. 4. Advise the District Manager of the situation and record all information in the site records along with photographs if necessary. If the permittee / contractor has failed to respond to the directives listed in the Job Memorandum, and the allotted time has elapsed, issue a Non-Compliance, notify the District Manager and recommend that the Manager contact the Division Chief Inspector to request the Bureau of Street Maintenance to perform any and all necessary actions to rectify the problem. After all sites have been inspected prior to the predicted rain, inspectors should monitor those sites that are complex or could become problematic. Once it is obvious that a rain storm has set in and the likelihood of runoff will occur, the inspector should visit the sites that have been determined to be the most critical first, and then visit the sites that have been evaluated as being less detrimental to the public's welfare. During a rain storm, inspectors should visit the problematic sites first to prevent hazards or any safety issues which may develop from the current rain. The Inspector shall always be mindful of their own personal safety at all times. They should resolve any immediate threats to the public welfare prior to continuing on with site inspections. The next group of sites to visit are the complex sites (large sites, detailed erosion control devices, etc.) and any site that may have a desilting basin. The last sites that should be visited are those in a good condition or have been constantly maintained by the contractor. 9

12 Note: Inspectors are reminded that erosion control inspections should not be conducted by the "Drive by Method" to avoid getting wet or muddy. In order to thoroughly inspect an erosion control site the inspector is required to walk the entire project and investigate all devices, basins, channels, etc. In some cases, the project will not be visible from the road. Some projects secure sites with fencing and locked gates. Inspectors should obtain a key for each project that is locked to assure access during rain storms. While inspecting a site during a rain storm, inspectors should insure that all basins and other devices indicated on the erosion control plans are functioning as designed. Remember that the erosion control plan is a minimum requirement and the field inspector may request additional devices such as sandbags to be installed as needed to maintain a safe condition and to protect the public welfare. If sandbag berms or other devices appear to be accumulating an excessive amount of silt or debris: 1. Contact the emergency contact person and direct them to rectify the problem at once by either removing the silt and debris or by adding additional sand bags until the rain has stopped and the site can be restored to the original condition. 2. If the emergency contact person cannot be contacted, notify the permittee or owner. 3. Give the permittee / contractor a realistic time frame to correct the problem. 4. Issue a Job Memorandum and include the time limit and that charges may be imposed if Street Services is called out to rectify the problem. 5. Advise the District Manager of the situation and record all information in the site records along with photographs if necessary. If the permittee / contractor has failed to respond to the directives listed in the Job Memorandum and the allotted time has elapsed, issue a Non-Compliance, notify the District Manager and recommend that the Manager contact the Division Chief Inspector to request the Bureau of Street Services to perform any and all necessary actions to rectify the problem. If a severe storm should happen to set in after normal working hours, on weekends or on a holiday, the inspector is reminded that erosion control is to be administered on a 24-HOUR basis per ADMINISTRATIVE ORDER E11-4, as necessary. If inspections are performed after normal working hours and an emergency has developed, notify the emergency contact person for the project. Inform them of the problem and give specific directions as to what might be required to resolve it. If the inspector is unable to contact a project representative and if the 10

13 inspector is unable to follow the normal chain of command within the Bureau, the inspector is advised to make good judgment calls on emergency situations. Contact the Bureau of Street Services Emergency Service truck at 311 only when all other administrative remedies have been exhausted and the situation at hand demands immediate attention to protect the safety and well-being of the public. Record everything that has taken place, take photographs to backup all actions taken and notify the District Manager at the earliest opportunity. If the permittee / contractor has responded to the inspectors request and the emergency is not related to neglect or failure to comply with directives from any City agency, a Notice of Non-Compliance should not be issued. However if the permittee / contractor has neglected the site, required devices or maintenance of these devices and has failed to comply with the inspectors directives, a Notice of Non-Compliance will be issued. The following working day after a rain storm, inspectors should visit all sites assigned to them. Each site should be given an assessment as to its condition after each rain. Again, inspectors should visit the sites that are most problematic first and ending with sites that are maintained and do not need any immediate attention. 1. Record all findings in the site records, notify permittees / contractors or emergency contacts of any problems that may need to be resolved and issue a Job Memorandum listing all discrepancies. 2. Give the permittee / contractor a realistic time frame which to correct the problem. 3. Issue a Job Memorandum and include the time limit and that charges may be imposed if Street Maintenance is called out to rectify the problem. 4. Advise the District Manager of the situation and record all information in the site records along with photographs if necessary. If the permittee / contractor has failed to respond to the directive listed in the job memorandum and the allotted time has elapses, issue a Notice of Noncompliance, notify the District Manager and recommend that the Manager request the Bureau of Street Services to perform any and all necessary actions to rectify the problem. For any sites that may have had device failures or a lack of device maintenance which has resulted in runoff onto the public right of way or into a watercourse, a Notice of Non-Compliance will be issued following the same procedures as stated above. Job sites that have desilting basins or check dams should be pumped dry and have all silt and debris removed within 24 hours after each storm. Remember to report all problems to the District Manager. 11

14 Note: Inspector should become familiar with the Department of Public Works Erosion Control notes on page 22, these are also listed on each set of erosion control plans and contain valuable detailed information of items that are to be inspected by the field inspector. TIME CHARGES Erosion control inspection time on sites other than active B-Permit or City Cash Contracts should be charged to E A14. The daily inspection reports for these time charges will be turned in at the end of the WWEC season. Erosion control inspection time on active B-Permits should be charged to the B- Permit Work Order number and copies of the erosion control daily inspection reports kept in the job file (originals to be turned in at the end of the WWEC season). Erosion control inspection time on City Cash Contracts should be charged to the Contract Work Order number and copies of the erosion control daily inspection reports kept in the job file (originals to be turned in at the end of the WWEC season). 12

15 PROCEDURES FOR DISTRICT MANAGERS The following steps shall be taken each year prior to and during the rainy season. On or about July 15 each year, the Contract Administration Manager shall prepare a list of Public Works permits which may require temporary erosion control measures during the rainy season. Shortly after that date, a list of Department of Building and Safety projects (which may require temporary erosion measures) will be forwarded by the Main Office to the Contract Administration Erosion Control Coordinator (ECC). The ECC will divide the list and distribute a copy to the respective District Manager through the Division Manager. The District Manager shall combine the two lists (Public Works Projects and Building and Safety Projects), excluding those projects which will not require any temporary erosion control. The District Manager shall forward the combined lists and the name of the assigned district contact representative to the Erosion Control Coordinator prior to August 1. The list must include the district number, Thomas Guide page and grid, Public Works permit number, job title, job address, the permittee name and address, the surety bond underwriters ( if applicable ), project engineer and the name and phone number of the Building and Safety Inspector for each project. ( Plate 4 pg 41) Contract Administration Erosion Control Coordinator will generate and monitor the distribution of the ordinance letters sent to the permittees requiring submittal of temporary erosion control plans. Copies of the notices will be forwarded to the respective Division Manager. Contract Administration will also forward a list of the permittees, projects and addresses to the Bureau of Engineering and the Department of Building and Safety. After the ordinance notices have been distributed by Contract Administration Erosion Control Coordinator to the permittee advising of the requirement for submittal of temporary erosion control plans, the District Manager shall assume responsibility for monitoring and obtaining compliance with the temporary erosion control ordinance. FIELD OPERATIONS AND CONTROL The Contract Administration MANAGER, in order to carry out the Bureau of Contract Administration's responsibilities, shall comply with the following procedure on a 24-HOUR basis as necessary, during the period of the rainy season. Maintain, during the erosion control period, an effective system of monitoring all Contract Administration projects and Building and Safety Grading projects 13

16 within the Bureau of Contract Administration district which may develop or impose a threat to the public welfare and thus require temporary erosion control measures. Establish and maintain a communication network with key personnel of Departments and Bureau's having local jurisdiction within the Managers District for the functions and services as follows: a. Bureau of Street Maintenance. b. Bureau of Engineering: Drainage Engineering Section of the appropriate District Office and the Structural & Geotechnical Division (Geotechnical and Soils Section). c. Bureau of Sanitation, Sewer Services Division, for sewer and storm drain maintenance. d. Department of Building and Safety grading inspectors. Advise the permittee when a project requires temporary erosion control work. Recommend to the Division Manager that the services of the Bureau of Street Services be requested when the permittee fails to act within a reasonable period of time in accordance with the erosion control ordinance requirements and after all administrative remedies have been followed. Assign personnel as necessary to coordinate requested emergency work from the Bureau of Street Services. Notify the permittee in writing that the Bureau of Street Services has been requested to perform emergency work. Upon completion of the emergency work by the Bureau of Street Services, again advise the permittee in writing. 14

17 PART - "B" WET WEATHER EROSION CONTROL PLAN ENFORCEMENT PROCEDURES AND WET WEATHER EROSION CONTROL PLANS AS ADOPTED BY THE BOARD OF PUBLIC WORKS GENERAL REQUIREMENTS DEVELOPMENT BEST MANAGEMENT PRACTICES HANDBOOK PART A CONSTRUCTION ACTIVITES 3 rd Edition section 3-2. PAGE 16 EROSION CONTROL TIME LINE... PAGE 21 REQUIRED EROSION CONTROL PLAN NOTES.. PAGE 22 HISTORY PROCEDURE FOR THE ADMINISTRATION OF TEMPORARY EROSION CONTROL AS ADOPTED BY THE BOARD OF PUBLIC WORKS, MARCH PAGE 25 ORDINANCE NUMBER PAGE 28 ORDINANCE NUMBER PAGE 31 APPENDIX: TABLE OF PLATES.PAGE 37 15

18 WWECP INSPECTION & ENFORCEMENT PROCEDURES GENERAL WWECP Approval Process Under the Federal Clean Water Act, each municipality throughout the nation is issued a National Pollutant Discharge Elimination System (NPDES) Permit. The goal of the permit is to stop polluted discharges from entering the storm drain system and local coastal waters. The current NPDES Permit concerning municipal storm water was issued to L.A. County and 84 cities including the City of Los Angeles by the Los Angeles Regional Water Quality Control Board (LARWQCB) on Dec.13, Section of the L.A.M.C. gives the Board of Public Works authority to perform or have performed erosion control work consist with the requirements of the Storm Water Municipal Permit. Within the Department of Public Works, the temporary erosion control program is administered by the Bureau of Contract Administration. Part 4.E of the Order No NPDES Municipal Storm Water Permit No. CAS requires construction activities in the City of Los Angeles to implement a construction development program to control runoff and prevent discharge of pollutants from construction sites to the maximum extent practicable. Pollutants associated with construction activities include erosion and sediment transported from the site to the streets, drainage facilities or adjacent properties via runoff, vehicle tracking, or wind. Therefore, sediments from areas disturbed by construction shall be retained on site using structural drainage controls and stockpiles of soil must be properly contained to prevent sediment transport. Section of the Los Angeles Municipal Code (LAMC), as amended by Ordinance Nos and gives the Board of Public Works authority to perform erosion control work consistent with the requirements of the Storm Water Municipal Permit. Within the Department of Public Works (DPW), the temporary erosion control program is administered by BCA. Plan check and approval is performed by the Bureau of Engineering (BOE). Temporary erosion control inspection and enforcement is performed by the BCA. DEPARMENT OF BUILDING AND SAFETY assists the DPW by observing the erosion control plan requirements for compliance during inspections of work on private property. However, the responsibility for enforcing the requirements for erosion control still rests with BCA including work that is being done under authority of a DEPARMENT of BUILDING and SAFETY grading permit. On July 8, 1970, the Los Angeles Board of Public Works (BPW) adopted for general guidance purposes an erosion control procedure. The Inspector of Public Works was designated as the BPW s authorized representative to administer the program. These erosion control guidelines are presented in the BCA s Wet Weather Erosion Control Plan Construction projects that have the potential to cause storm water pollution from erosion need to be identified by the BCA and DEPARMENT of BUILDING and SAFETY in accordance with the procedures described in the manual. These construction projects are compiled, reviewed, evaluated and inspected in accordance with the BCA s erosion control procedures. 16

19 WWECP Procedures and Time Line Prior to July 1 of each year, the Bureau of Contract Administration Erosion Control Coordinator (ECC) requests from LADBS a list of construction projects with grading activities that may require a WWECP. The ECC also requests from all BCA District Managers a list of all B-Permit and Work Order projects that will require a WWECP. In response to the ECC request, LADBS submits a list of grading jobs that may require a WWECP on July 15. The ECC reviews the list then distributes the list to the respective BCA district Managers. The list of Public Works projects that may need a WWECP is compiled and combined with the list issued by LADBS. BCA districts Managers will assign inspectors to evaluate projects in their areas. From these evaluations, BCA district Managers determine which sites require notifications for submittal of a WWECP. Prior to August 1 of each year, BCA sends out notices to all construction projects that require submittal of a WWECP. The list of all projects will also be sent to BOE and LADBS. Approval of the WWECP for construction projects with ongoing grading activities must be obtained prior to September 1 of each year, 30 days prior to the beginning of the rainy season. Desilting basins are to be completed by September 15 of each year. On September 2, BOE notifies BCA and LADBS of projects that have approved plans. On September 20, LADBS notifies BCA of construction projects issued Order-To-Comply notices regarding completion of desilting basins. On October 6 of each year, LADBS will notify BCA of construction projects issued Order-To- Comply notices regarding erosion control devices. LADBS will also notify BCA of any observed noncompliance of erosion control requirements during inspections on private properties. BCA field inspectors assigned to these sites will issue a Notice of Non-Compliance. WWECP Site Inspection Criteria BCA s first inspections that should be scheduled are for sites that require desilting basins. This inspection should take place by September 15. If the required basins have not been installed by this date, a Notice of Non-Compliance must be issued. As of October 1, all remaining erosion control devices should be in place per the Wet Weather Erosion Control Plan requirements on the erosion control plans and the Department of Public Works Erosion Control Notes. If the remaining requirements have not been met by this date, a Notice of Non-Compliance will be issued. During the rainy season (October 1 to April 14), BCA inspectors will be required to visit each site when rain has been forecast at 40% (prior to rain), during rain and after rain. BCA inspectors should check each site and evaluate its condition using Attachment H Construction Site Erosion Control Practices Inspection Checklist. If all devices are in place and the site appears not to require any additional work, record the status. If a site is lacking devices or additional work is 17

20 required, the following steps shall be taken: 1. Notify the emergency contact person listed on the job plans, the contractor or the permittee, and advise them of the condition of the site and direct them to resolve the issue. 2. Give the permittee or contractor a realistic time frame to correct the problem. 3. Issue a Job Memorandum and include the time limit and any charges that may be imposed if the Bureau of Street Services is called out to rectify the problem. 4. Advise the BCA District Manager of the situation and record all information in the site records along with photographs if necessary. After all sites have been inspected prior to the predicted rain, inspectors should monitor those sites that are complex or could become problematic. Once it is obvious that a rainstorm has set in and the likelihood of runoff will occur, the BCA inspector should visit the sites that have been determined to be the most critical first. BCA inspectors must resolve any immediate threats to the public welfare. The inspector must then visit the sites that have been evaluated as being less detrimental to the public welfare. The next sites to visit are the complex sites (large sites, detailed erosion control devices, etc.) and any site that may have a desilting basin. The last sites that should be visited are those in good condition or have been constantly maintained by the contractor. While inspecting a site during a rainstorm, inspectors should insure that all basins and other devices indicated on the erosion control plans are functioning as designed. The erosion control plan is a minimum requirement and the BCA field inspector may request additional devices such as sandbags to be installed as needed to maintain a safe condition and to protect the public welfare. If sandbags, berms, or other devices appear to be accumulating an excessive amount of silt or debris, the following steps are to be taken: 1. Contact the emergency contact person and direct them to rectify the problem at once by either removing the silt and debris or by adding additional sand bags until the rain has stopped and the site can be restored to a satisfactory condition. 2. If the emergency contact person cannot be contacted, notify the permittee or owner. 3. Give the permittee or contractor a realistic time frame to correct the problem. 4. Issue a Job Memorandum and include the time limit and that charges may be imposed if the Bureau of Street Services is called out to rectify the problem. 5. Advise the BCA District Manager of the situation and record all information in the site records along with photographs if necessary. If inspections are performed after normal working hours and an emergency has developed, the inspector should notify the emergency contact person for the project, and 18

21 inform them of the problem and give specific directions as to what might be required to resolve it. If the inspector is unable to contact a project representative and if the inspector is unable to follow the normal chain of command within the Bureau, the inspector is advised to use their own initiative to achieve compliance in emergency situations. The inspector should contact the Bureau of Street Services Emergency Service truck at 311 only when all other administrative remedies have been exhausted and the situation at hand demands immediate attention to protect the safety and welfare of the public. The inspector should record everything that has taken place, take photographs to backup all actions taken and notify the BCA District MANAGER at the earliest opportunity. If the permittee or contractor has responded to the inspectors request and the emergency is not related to neglect or failure to comply with directives from any City agency, a Notice of Non-Compliance should not be issued. However, if the permittee or contractor has neglected the site, required devices or maintenance of these devices or has failed to comply with the inspector s directives, a Notice of Non-Compliance should be issued. The inspectors should visit all sites assigned to them the working day after the rainstorm. Each site should be assessed as to its condition after each rain. The inspectors should visit the sites that are most problematic first and ending with sites that are maintained and do not need any immediate attention. The inspector should take the following steps: 1. Record all findings in the site records, notify permittees or contractors or emergency contacts of any problems that may need to be resolved and issue a Job Memorandum listing all discrepancies. 2. Give the permittee or contractor a realistic time frame in which to correct the problem. 3. Issue a Job Memorandum and include the time limit and that charges may be imposed if the Bureau of Street Services is called out to rectify the problem. 4. Advise the BCA District Manager of the situation and record all information in the site records along with photographs if necessary. WWECP Enforcement Actions Inspection and enforcement of erosion and sedimentation control measures is administered by BCA in accordance with the BCA s Wet Weather Erosion Control Plan. The following sections are enforcement procedures that are based on BCA s policies: (a) Verbal Notices The most common initial method of requesting corrective action and enforcing compliance is a verbal notice from the inspector to the contractor. Verbal notices are often sufficient to achieve compliance. If the violation is minor, the inspector will notify the private contractor s project Supervisor and make a note of the violation in the inspection file. Examples of minor violations include control measures in need of minor repair or relocation. Judging the degree of severity may also take into account any past history of similar or repeated violations by the same developer or contractor at this or other sites. If the BCA inspector deems it to be necessary, a Job Memorandum will be issued to document conditions and instructions. 19

22 (b) Written Notices If the permittee or contractor has failed to respond to the directives listed in the Job Memorandum and the allotted time has elapsed, the inspector will issue a Notice of Non-compliance, notify the BCA District Manager and recommend that the Manager contact the Division Chief Inspector to request the Bureau of Street Services to perform any and all necessary actions to rectify the problem. If a severe storm should occur after normal working hours, weekends or holidays, the inspector should administer the erosion control program per established BCA procedures (Administrative Order E 1 1-4). For any sites that may have had device failures or a lack of device maintenance which has resulted in runoff onto the public right of way or into a watercourse, a Notice of Non-Compliance will be issued following the same procedures as stated above. Job sites that have desilting basins or check dams should be pumped dry and have all silt and debris removed within 24 hours after each storm. (c) Stop Work Orders If the "Notice of Noncompliance" is not addressed by the next inspection or if a major infraction is observed, such as a failure of BMPs resulting in a significant release of sediment or other pollutants off-site, further steps may be taken. In accordance with section of the LAMC, the inspector has the authority to issue a written notice to the responsible party to stop work on that portion of the work concerning the violation until the conditions relating to the non-compliance have been corrected. 20

23 WET WEATHER EROSION CONTROL TIME LINE JULY 1 ST BUREAU OF CONTRACT ADMINISTRATION (BCA) SENDS LETTER TO DEPARTMENT OF BUILDING AND SAFETY (DBS) REQUESTING A LIST OF GRADING JOBS THAT MAY REQUIRE A WET WEATHER EROSION CONTROL PLAN (WWECP) AND ALSO REQUEST FROM ALL BCA DISTRICT MANAGERS A LIST OF ALL B- PERMIT AND WORK ORDER PROJECTS THAT WILL REQUIRE A WWECP. JULY 15 TH TO BCA. DBS SUBMITS A LIST OF GRADING JOBS THAT MAY REQUIRE WWECP AUG 1 ST BCA SENDS OUT NOTICES TO ALL PROJECTS THAT REQUIRE THE SUBMITTAL OF A WWECP. THIS LIST IS SENT TO BUREAU OF ENGINEERING (BOE) AND DBS SEPT 1 ST WWECP MUST BE APPROVED. SEPT 2 ND BOE NOTIFIES BCA AND DBS OF THE PROJECTS WHERE A WWECP HAS BEEN SUBMITTED, BCA ISSUES A NOTICE OF NON-COMPLIANCE TO THOSE PROJECTS THAT HAVE FAILED TO OBTAIN AN APPROVED WWECP. SEPT 15 TH BCA INSPECTS THE SITES THAT REQUIRE DESILTING BASINS. SEPT 20 TH DBS NOTIFIES BCA OF ANY NON-COMPLIANCE ISSUED BY DBS TO THOSE PROJECTS THAT HAVE NOT COMPLETED DESILITING BASINS. OCT 1 ST ALL EROSION CONTROL DEVICES SHALL BE INPLACE PER APPROVED WWECP, BCA TO ISSUE A NOTICE OF NON-COMPLIANCE TO ALL PROJECTS THAT ARE NOT IN COMPLIANCE WITH THEIR APPROVED WWECP OR THAT HAVE FAILED TO OBTAIN AN APPROVED WWECP. OCT 6 TH DBS NOTIFIES BCA OF ANY OTHER NOTICE OF NON-COMPLIANCE ISSUED BY DBS PERTENING TO EROSION CONTROL. APR 15 TH END OF RAINY SEASON. MAY 1 st ALL ORIGINAL RECORDS ARE FORWARDED TO THE BCA EROSION CONTROL COORIDINATOR. 21

24 NOTICE TO PERMITTEE NOTE: TO ALL BUREAU OF CONTRACT ADMINISTRATION PERSONNEL. THE FOLLOWING NOTES ARE TO BE PRINTED ON ALL EROSION CONTROL PLANS IN THEIR ENTIRETY. IF ANY DELETIONS ARE NOTED CONTACT THE CITY ENGINEER FOR RECTIFICATION. DEPARTMENT OF PUBLIC WORKS BUREAU OF ENGINEERING EROSION CONTROL NOTES TEMPORARY EROSION CONTROL MEASURES EFFECTIVE DURING RAINY SEASON OCTOBER 1 TO APRIL Temporary erosion control devices shown on the grading plan which interfere with the work shall be relocated or modified as and when the inspector so directs as the work progresses. 2. All loose soil and debris shall be removed from the street areas upon starting operations and periodically thereafter as directed by the inspector. 3. When directed by the inspector, a 12" berm shall be maintained along the top of the slope of those fills on which grading is not in progress. 4. Provide velocity check dams across the outlets of all lots draining into the street. 5. Stand-by crews shall be alerted by the permittee or the contractor for emergency work during rainstorms. 6. Sewer or storm drain trenches that are cut through basin dikes or basin inlet dikes, shall be plugged with sandbags from top of pipe to top of dike. Sewer lines shall first be encased in concrete before sandbags are placed. 7. All utility trenches shall be blocked at the prescribed intervals from the bottom to the top with a double row of sandbags prior to backfill. Sewer trenches shall be blocked at the prescribed intervals with a double row of sandbags extending downward, two sandbags from the graded surface of the street. Sandbags are to be placed with the alternate header and stretcher courses. The intervals prescribed between sandbag blocking shall depend on the slope of the ground surface, but not exceed the following: Grade of the street Interval Less than 2% As required 2% to 4% 100 feet 4% to 10% 50 feet Over 10% 25 feet 8. Provide velocity check dams in all unpaved street areas at the intervals 22

25 indicated above. Velocity check dams may be constructed of sandbags, timber, or other erosion resistant material approved by the Engineer and shall extend completely across the street or channel at right angles to the centerline. Earth dikes may not be used as velocity check dams. 9. Provide velocity check dams in all unpaved graded channels at the intervals indicated below. Grade of channel Intervals between check dams Less than 3% 100 feet 3% to 6% 50 feet Over 6% 25 feet 10. After sewer and utility trenches are backfilled and compacted, the surfaces over such trenches shall be mounded slightly to prevent channeling of water in the trench area. Care should be exercised to provide for cross flow at frequent intervals where trenches are not on the centerline of a crowned street. 11. Except as otherwise directed by the Engineer, all devices shown shall be in place at the end of each working when the forecast of rain probability is 50% and maintained during the rainy season (October 1 to April 15). 12. All basins and check dams shall have been pumped dry and all debris and silt removed within 24 hours after each storm. 13. All basins built on lots adjacent to dwellings must be completely lined with asphalt or gunite. 14. Sizes of basins and weirs shall be shown on plans and of a capacity to service the watershed affected. 15. All spillways from basins shall be paved to existing paved street, existing storm drain catch basin or other approved watercourse. 16. Sandbags shall be stockpiled in parkway at intervals shown on erosion plans, ready to be placed in position when rain forecast is 40% or when directed by the inspector. 17. Retention or desilting basins may not be removed or made inoperative between October 1 and April 15 without prior approval of the Engineer until all surface improvements have been completed. 18. Brush and ground cover may not be removed more than 10 feet above an area to be graded between October 1 and April

26 DESILTING BASINS (a) Outlet and apron - (SEE PLATE #15,15A). (b) Dikes: 1. Must be compacted to 95% compaction and shall be constructed under the direct supervision of the Public Works Erosion Control Inspector. 2. Placement of spillway and outlet pipe shall be as far as practicable from inlet. 3. Walls shall not exceed 2:1 slope. (c) Inlet to basin: 1. Wingwalls shall be paved or sandbag berms where approved by the Engineer. 2. Slope of inlet shall be equal to or more than the slope of the carrying surface immediately above the inlet to avoid silting. (d) If a gravity pipe is impracticable, a stand-by pump shall be provided for each desilting basin. A guard is to be on continuous duty while basin contains water. (e) Desilting basins required for temporary erosion control will not be permitted in the street areas unless specifically authorized by the Engineer. (f) All weirs shall be flat across the invert; semi-circular or "v" weirs are not permitted. 24

27 PROCEDURE FOR THE ADMINISTRATION OF TEMPORARY EROSION CONTROL AS ADOPTED BY THE BOARD OF PUBLIC WORKS MARCH 1979 Set forth herein is the administrative procedure to be followed to abate hazards to the public health, safety, and welfare which may arise during the rainy season should a subdevider not exercise proper erosion control on properties under development within the city. 1. On August 1 of each year, the Department of Building and Safety shall notify the Bureau of Contract Administration of all projects under Building and Safety permit that may require temporary erosion desilting basins or other temporary erosion control devices. 2. The Bureau of Contract Administration shall then prepare a list of all projects requiring such basins or other temporary control devices under permits of the Department of Public Works and the Department of Building and Safety. 3. The Bureau of Contract Administration shall notify, by August 15, the owner, permittee, private engineer and surety of each project requiring such basins or other temporary control devices to submit all plans required for such devices to the Bureau of Engineering, prior to September 15. The notice shall require temporary desilting basins to be constructed not later than October 15 and all other devices not later than December 1. Plan review procedure shall be as follows: a. The Bureau of Engineering shall submit to the Department of Building and Safety erosion control plans for all projects. b. The Department of Building and Safety shall return these plans with the recommendations to the Bureau of Engineering. The Bureau of Engineering shall then review and approve all plans for control devices and forward the approved plans to either the owner, permittee, private engineer or surety, as applicable. c. The Bureau of Engineering shall provide two sets of prints of the approved plans to the Department of Building and Safety and two sets to the Bureau of Contract Administration. 25

28 4. If the required plans are not submitted by September 15, the Bureau of Engineering shall notify the Bureau of Contract Administration and the Department of Building and Safety those projects for which plans will be prepared by the Bureau of Engineering. A work order shall be initiated for those projects not covered by a valid B-Permit. 5. Plans prepared by the Bureau of Engineering also shall follow the review procedure specified in 3 a, b and c above. 6. The Department of Building and Safety and the Bureau of Contract Administration shall mutually cooperate to the fullest extent possible to obtain compliance with all erosion control requirements. 7. The Department of Building and Safety shall notify the Bureau of Contract Administration no later than October 20 about desilting basins and not later than December 6 about all other control devices, and provide the names of all owners, permittees and sureties of projects under Building and Safety permit who have not constructed the required basins or other devices in accordance with the plans. 8. The Bureau of Contract Administration shall then contact the Bureau of Street Maintenance and the Bureau of Engineering to jointly determine the interim field measures necessary for each project. However, it may be necessary for the Bureau of Street Maintenance to remove mud and debris from adjacent private property or public street prior to taking protective measures. In an emergency, field measures may have to be taken unilaterally by the Bureau of Street Maintenance. 9. In all instances, when the Bureau of Contract Administration or the Bureau of Engineering has taken action to cause performance of temporary or emergency erosion control work by the Bureau of Street Maintenance or by the Bureau of Engineering, all engineering charges, administration charges, or charges for other services performed for a specific project shall be accumulated by the Bureau of Accounting. 10. The Chief Accountant of Public Works shall bill the owner, permittee and surety for work performed on all projects, whether those projects are under permit of the Department of Building and Safety or the Department of Public Works or both. A copy of such billing shall be sent to the Department of Building and Safety, either exclusively or jointly. 26

29 11. If after 30 days from the billing date no payment has been received for the services performed, the Chief Accountant shall again bill the owner, permittee and surety, setting forth a date 15 days hence by which time payment must be made. 12. If after 15 days from the date of the second billing no payment has been received, the Chief Accountant shall refer the matter to the City Attorney with the request that he proceed against the bond. 27

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39 APPENDIX TABLE OF PLATES Page No. 1 Notification Letter to Building and Safety Reminder Letter to District Managers Ordinance Letter Site Evaluation / 20 Erosion Control Measures (typical) / Job Memorandum for Erosion Control Notice of Non-Compliance Job Memorandum (typical) Statistical Report of Inspections Daily Inspection Report (BCA 328) Erosion Control Inspection Check List Site Map (typical) Emergency Telephone Numbers Emergency Rain Conditions & Daily Rep Emergency Rain Cond. & Daily Rep. (Sample) WWEC Post Incident Report (BCA 328) WWEC List for (Excerpt) WWEC District Coordinators for Council Districts Map

40 CITY OF LOS ANGELES INTER-DEPARTMENTAL CORRESPONDENCE Date: [July 1, 2009] To: From: [Andrew Adelman, PE] General Manager Department of Building and Safety [Attn: Gerald Ray Wooden 201 N. Figueroa Street, Suite 300 Los Angeles, CA 90012] [John L. Reamer, Jr., Director] Bureau of Contract Administration [By H. R. Strazzella, Chief Construction Inspector] 1149 S. Broadway, Suite 300 Los Angeles, CA Subject: Temporary Erosion Control [ ] In preparation for the [ ] rainy season erosion control enforcement, please provide us a list of all of grading permits, which may require temporary desilting basins or other temporary erosion control devices. Please include the following information: site address, permittee (name, address and phone number), grading inspector (name, phone number and district office) and private engineer (name, address, and phone number). To effectively administer the Erosion Control Program we need to have the contact information listed above. Thank you for your continued cooperation. [ Update Each Season ] 38

41 CITY OF LOS ANGELES INTER-DEPARTMENTAL CORRESPONDENCE Date: [July 1, 2009] To: From: [Metro or Valley] Construction District Supervisors [Current ECC] Erosion Control Coordinator Bureau of Contract Administration Subject: Temporary Erosion Control [ ] Please investigate all permits in your District and return to this office a list of projects requiring temporary erosion control. This list shall include the following information: Job title and permit number, permittee (name, address and phone number), project engineer (name, address, and phone number) and bonding company. A consolidated list will be prepared with the inclusion of Building and Safety permits. Please submit your list no later than July 31, [2009] to: [Current Erosion Control Coordinator] Bureau of Contract Administration 1149 S. Broadway, Suite 300 Los Angeles, CA Office: [(213) ] Fax: [(213) ] Mail Stop: [480] Cellular telephone: [(213) 798-xxxx] [ Update Each Season ] 39

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46 STABILIZED CONSTRUCTION ENTRANCE Reference: California Stormwater Quality Task Force, modified 44

47 PIPE SLOPE DRAIN (RIGID) TEMPORARY SLOPE DRAIN (CASE 1) Reference: California Stormwater Quality Task Force, modified 45

48 PIPE SLOPE DRAIN (FLEXIBLE) TEMPORARY SLOPE DRAIN (CASE 2) Reference: California Stormwater Quality Task Force, modified 46

49 OUTLET PROTECTION Reference: 1994 JOHN McCULLAH, modified 47

50 SILT FENCE Reference: 1994 JOHN McCULLAH, modified 48

51 STRAW BALE BARRIER Reference: 1994 JOHN McCULLAH, modified 49

52 SANDBAG BARRIER Reference: California Stormwater Quality Task Force, modified 50

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54 TEMPORARY SEDIMENT BARRIER Reference: 1994 JOHN McCULLAH, modified 52

55 FILTER FABRIC FENCE DROP INLET SEDIMENT BARRIER (CASE 1) Reference: 1994 JOHN McCULLAH, modified 53

56 BLOCK AND GRAVEL DROP INLET SEDIMENT BARRIER (CASE 2) Reference: 1994 JOHN McCULLAH, modified 54

57 STORM DRAIN INLET PROTECTION (CASE 3) Reference: California Stormwater Quality Task Force, modified 55

58 CURB AND GUTTER SEDIMENT BARRIER (CASE 4) Reference: 1994 JOHN McCULLAH, modified 56

59 CURB INLET SEDIMENT BARRIER (CASE 5) Reference: 1994 JOHN McCULLAH, modified 57

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68 EMERGENCY PHONE NUMBERS EROSION CONTROL COORDINATOR DEPARTMENT OF BUILDING AND SAFETY GRADING DIVISON GENERAL INFORMATION NUMBERS 311 GRADING DISTRICT - LOS ANGELES DISTRICT - WEST LOS ANGELES / HARBOR DISTRICT - VAN NUYS BUREAU OF STREET SERVICES NORMAL WORKING HOURS INFORMATION NORTH CENTRAL EAST VALLEY WEST VALLEY HARBOR EMERGENCY 911 BUREAU OF SANITATION SEWER PROBLEMS NORMAL WORKING HOURS INFORMATION 311 HOLLYWOOD AREA NORTH CENTRAL LOS ANGELES EAST VALLEY WEST VALLEY SOUTH LOS ANGELES WEST LOS ANGELES EMERGENCY 911 STORM DRAIN PROBLEMS METRO VALLEY

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