NORTHERN DRAINAGE 2014 ANNUAL REPORT - dtsc · PDF filenorthern drainage 2014 annual report ... r4-2007-0054 streambed alteration agreement no. 1600-2003-5052-r5 ... in 1972, the rocketdyne

NORTHERN DRAINAGE 2014 ANNUAL REPORT CLEAN WATER ACT SECTION 401 WATER QUALITY CERTIFICATION, FILE NO. 12-001 CLEANUP AND ABATEMENT ORDER NO. R4-2007-0054 STREAMBED ALTERATION AGREEMENT NO. 1600-2003-5052-R5 SANTA SUSANA FIELD LABORATORY VENTURA COUNTY, CALIFORNIA by Haley & Aldrich, Inc. San Diego, California for The Boeing Company Ventura County, California File No. 41000-439 December 2014

NORTHERN DRAINAGE 2014 ANNUAL REPORT CLEAN WATER ACT SECTION 401 WATER QUALITY CERTIFICATION, FILE NO. 12-001

CLEANUP AND ABATEMENT ORDER NO. R4-2007-0054 STREAMBED ALTERATION AGREEMENT NO. 1600-2003-5052-R5

SANTA SUSANA FIELD LABORATORY VENTURA COUNTY, CALIFORNIA

The material and data in this report were prepared by the staff of Haley & Aldrich, Inc. under the professional supervision and direction of the undersigned California Registered Civil Engineer whose seal and signature appears hereon. The material and data were prepared in accordance with generally accepted professional engineering and geologic practice. There is no other warranty, either expressed or implied. _________________________________

Richard M. Farson, P.E. No. 47269 Vice President

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EXECUTIVE SUMMARY The purpose of this report is to provide findings in compliance with the annual reporting requirements stipulated in the Clean Water Act Section 401 Water Quality Certification, File No. 12-001; the California Regional Water Quality Control Board, Los Angeles Region, Cleanup and Abatement Order No. R4-2007-0054; and the California Department of Fish and Wildlife Lake or Streambed Alteration Agreement #1600-2003-5052-R5 as they pertain to planting and monitoring efforts performed within the Santa Susana Field Laboratory Northern Drainage during water year 2014 (1 October 2013 through 30 September 2014). This report was prepared on behalf of The Boeing Company by Haley & Aldrich, Inc., with significant contributions by Padre Associates, Inc., and Geosyntec Consultants. As required in the above-mentioned certification, order, and agreement, construction-related restoration/stabilization activities in the Northern Drainage were conducted between 27 August and 23 November 2012 and included: Restoration of remediated areas in the Northern Drainage to their natural and self-sustainable

condition that existed prior to soil, sediment, debris, and materials removal activities; and

Installation of best management practices to minimize soil erosion and sediment transport within and into the Northern Drainage.

Planting and restoration measures were implemented to augment revegetation efforts conducted in 2010 and provide habitat value equivalent to pre-project conditions or better. Mitigation/planting was conducted and plantings, mulching, and seeding activities were completed by 19 November 2012. Additional restoration plantings were installed in March, November, and December 2013. Based on the results of monitoring during the 2014 water year, the stabilization measures in the Northern Drainage study reach: Effectively mitigated in-stream erosion caused by debris removal activities; and

Functioned as anticipated and identified two major and two minor maintenance needs. In accordance with Condition 18 of the Water Quality Certification, an assessment of the Northern Drainage was completed using the California Rapid Assessment Method for Wetlands and Riparian Habitats (CRAM). This method uses both field diagnostics and existing data to demonstrate project success. The Northern Drainage was assigned an average overall CRAM score of 84 points based on landscape context, hydrology, biotic structure, and physical structure. This was the second documented score for the Northern Drainage and it was better than the statewide average score. Construction-related restoration/stabilization maintenance activities during the 2014 water year were conducted when there was no surface water flow. No surface water diversions were therefore required and no water quality samples collected.

TABLE OF CONTENTS Page

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EXECUTIVE SUMMARY i LIST OF TABLES iv LIST OF FIGURES iv

1. INTRODUCTION 1

1.1 Definition of the Northern Drainage Project Area 1 1.2 Physical Setting of the Northern Drainage Project Area 1

1.2.1 Former Shooting Range 2 1.2.2 Northern Drainage 2 1.2.3 Former LOX Plant 2

1.3 2005 Topanga Fire 3 1.4 Project-Related Permits and Agreements 3

1.4.1 Revisions to Project-Related Permits 4 1.4.2 Status of Other Agreements 4

1.5 Defined Project Boundaries of Restoration/Stabilization and Mitigation/Planting Areas 4

2. RESTORATION AND STABILIZATION CONSTRUCTION ACTIVITIES 5

2.1 Restoration/Stabilization Activities 5 2.2 Restoration/Stabilization Project Status 5 2.3 Monitoring and Maintenance Activities by Year 5

2.3.1 2012 5 2.3.2 2013 6 2.3.3 2014 6

3. MITIGATION AND PLANTING ACTIVITIES 10

3.1 Mitigation/Planting Activities by Year 10 3.1.1 2010 10 3.1.2 2012 10 3.1.3 2013 11 3.1.4 2014 11

3.2 Mitigation/Planting Project Status and Delays by Year 11 3.2.1 2012 11 3.2.2 2013 11 3.2.3 2014 11

3.3 Monitoring Activities and Exotic Plant Control Efforts by Year 11 3.3.1 2012 11 3.3.2 2013 12 3.3.3 2014 12

3.4 Planting-Specific Data by Year 12 3.4.1 2012 12 3.4.2 2013 12 3.4.3 2014 12

3.5 Demonstration of Project Success 13 3.6 Recommended Actions 13

TABLE OF CONTENTS Page

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4. PROJECT STATUS AND SCHEDULE OF WORK 15

4.1 Project Status by Year 15 4.1.1 2012 15 4.1.2 2013 15 4.1.3 2014 15

4.2 Schedule of Work 15 4.2.1 Restoration/Stabilization Annual Schedule of Work 15 4.2.2 Mitigation/Planting Annual Schedule of Work 16

5. WATER QUALITY MONITORING RESULTS 18

REFERENCES 19 TABLES FIGURES APPENDIX A – Project-Related Permits APPENDIX B – Northern Drainage Annual Geomorphic Monitoring Report - Water Year 2014

(Geosyntec) APPENDIX C – Photographic Documentation of Site Conditions Prior to and After Field

Activities APPENDIX D – 2014 (Year 3) Mitigation Monitoring Report for Northern Drainage Restoration

Project (Padre) APPENDIX E – As-Built Drawings of Planting Measures

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LIST OF TABLES Table No. Title I Annual Reporting Requirements II Restoration/Stabilization and/or Mitigation/Planting Measures and GPS

Coordinates (2010 – 2012) III Northern Drainage Restoration/Stabilization Monitoring Schedule IV Maintenance of Stabilization Measures (2013 – 2014) V Detailed Plant Species Count (2012 – 2014) VI Station Status by Year LIST OF FIGURES Figure No. Title 1 Site Location 2 Site Plan 3 Northern Drainage Stabilization and Planting Measures through

30 September 2014 4 Detailed Schedule

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1. INTRODUCTION The California Environmental Protection Agency Department of Toxic Substances Control (DTSC) issued an Imminent and Substantial Endangerment Determination and Order and Remedial Action Order (ISE/RA Order), Santa Susana Field Laboratory, Ventura County, California, in November 2007 (CAD 093365435 and CA 1800090010; DTSC, 2007). On 29 April 2011, DTSC issued a Certification of Completion stating that the response actions required under the ISE/RA Order were successfully performed and project requirements completed (DTSC, 2011). After the ISE/RA Order was closed, mitigation of the impacted areas was begun pursuant to the related Orders and permits associated with this effort. This report was prepared on behalf of The Boeing Company (Boeing) by Haley & Aldrich, Inc., (Haley & Aldrich) and with significant contributions by Padre Associates, Inc. (Padre), and Geosyntec Consultants (Geosyntec) pursuant to the annual reporting requirements stipulated in the Clean Water Act (CWA) Section 401 Water Quality Certification (401 Certification), File No. 12-001; the California Regional Water Quality Control Board, Los Angeles Region (LARWQCB), Cleanup and Abatement Order (CAO) No. R4-2007-0054; and the California Department of Fish and Wildlife (CDFW, formerly the California Department of Fish and Game) Lake or Streambed Alteration Agreement (SAA) #1600-2003-5052-R5 as they pertain to planting and monitoring efforts performed within the Santa Susana Field Laboratory (Santa Susana site) Northern Drainage during water year 2014 (1 October 2013 through 30 September 2014). Annual reporting requirements between the 401 Certification, CAO, and SAA are similar in many aspects, yet each has unique requirements. Table I summarizes the annual reporting requirements by permit or Order and identifies the section of this report where the information can be found. 1.1 Definition of the Northern Drainage Project Area The CAO (LARWQCB, 2007) required cleanup and abatement of the effects of contaminants discharged to surface waters in the Northern Drainage. The following project areas are collectively referred to as “the Northern Drainage”: The Rocketdyne-Atomics International Rifle and Pistol Club, Inc., trap and skeet shooting

range (the former shooting range) and the former shooting range debris removal area;

The reach of the drainage from the former shooting range west to a few hundred feet past Outfall 009; and

The National Aeronautics and Space Administration (NASA) former liquid oxygen (LOX) Plant debris removal area.

1.2 Physical Setting of the Northern Drainage Project Area The Santa Susana site is in the southeast corner of Ventura County, approximately 29 miles northwest of Los Angeles, California (Figure 1). The facility occupies approximately 2,850 acres of hilly terrain with about 1,100 feet of topographic relief near the crest of the Simi Hills and is divided into four administrative areas (Areas I, II, III, and IV), and undeveloped land along the northern and southern boundaries. The source of the clay target debris was an approximately 3.5-acre former shooting range on the Mountains Recreation and Conservation Authority (MRCA)-Sage Ranch property adjacent to the

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northeastern portion of the Santa Susana site, near the Main Gate. The source of the asphalt, concrete, and insulation debris was likely from the demolition of the former LOX Plant. 1.2.1 Former Shooting Range

In 1972, the Rocketdyne–Atomics International Rifle and Pistol Club, Inc., entered into a lease with John A. Dundas et al., care of Mr. Orrin G. Sage, to operate a trap/skeet shooting range within land north of the Santa Susana site (measuring approximately 450 feet by 450 feet). The shooting range was operated by the Rocketdyne–Atomics International Rifle and Pistol Club independent of Boeing or its predecessors. A succession of 5-year lease extensions were entered into in 1977, 1982, and 1987 between the Rocketdyne–Atomics International Rifle and Pistol Club and Mr. Orrin G. Sage, an officer of the Geopac Corporation, the successor to John A. Dundas, et al. In July 1990, the property foreclosed and was sold to the Santa Monica Mountains Conservancy (SMMC) through the MRCA. In an effort to turn the Sage Ranch property into a public park and wildlife corridor preservation area, SMMC closed the range in April 1991. The former shooting range consists of the exposed ground downrange area bounded by bedrock outcrops to the north. No buildings or other structures exist within the former shooting range. The Northern Drainage roughly bisects the former shooting range area in an east to west direction. An unpaved hiking trail (Loop Trail) generally parallels the north side of the drainage on Sage Ranch property. The area north of the former shooting range is characterized by relatively steep outcrops of Chatsworth formation bedrock.

1.2.2 Northern Drainage

The Northern Drainage is an east to west trending ephemeral stream with headwaters near the former shooting range. It traverses the property line between Sage Ranch to the north and the Santa Susana site to the south, runs along the northern Santa Susana site property boundary through Area I, then turns northward and enters the American Jewish University, Brandeis-Bardin Campus (BBC) property approximately 500 feet north of stormwater monitoring location Outfall 009 (Figure 2). The watershed area tributary to Outfall 009 is 536 acres (0.84 square mile), which includes portions of the Sage Ranch, NASA, Boeing, and BBC properties. From Outfall 009, the drainage flows north onto BBC property and into Meier Canyon, where it joins Arroyo Simi in the Calleguas Creek Watershed and eventually discharges into the Pacific Ocean at Mugu Lagoon. The Northern Drainage descends from an elevation of approximately 1,900 feet above mean sea level east of the former shooting range to approximately 1,610 feet above mean sea level at Outfall 009, approximately 1.5 miles to the west-northwest. The drainage is composed of an ephemeral streambed channel cut into terrace sediment and sandstone bedrock of the Chatsworth formation. The average depth of the channel is approximately 3 to 5 feet, with deeper sections adjacent to bedrock outcrops.

1.2.3 Former LOX Plant

The former LOX Plant is located in a federally-owned portion of Santa Susana Area I administered by NASA and was operated by Air Products, Inc., for the United States Air Force in the 1960s. The plant was situated on a graded area approximately 300 feet north of the

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Northern Drainage. All original buildings and tanks were removed in the early 1970s; the tank foundations were removed in the 1990s. Asphalt and concrete debris likely associated with the former LOX Plant demolition were observed in the proximate banks and slopes of the Northern Drainage. A cleanup action was undertaken east of the former LOX Plant on Sage Ranch property to remove observed debris and is documented in “Northern Drainage Former Liquid Oxygen (LOX) Plant, Debris/Asbestos Removal Action Report” (Montgomery Watson Harza Americas, Inc., [MWH], 2008).

1.3 2005 Topanga Fire

Much of the vegetation at the Santa Susana site was burned during the September/October 2005 Topanga Fire and left a significant ash deposit, especially in drainages. Both native and non-native plant species were destroyed by the fire. In areas with limited vegetation (e.g., bedrock or grasses), effects of the fire were minimal. Areas with more vegetation (e.g., trees and chaparral) were impacted significantly by burning and ash deposits. Almost all of the Santa Susana site was burned, charred, or impacted by fire ash based on the review of a NASA image collected by the Advanced Spaceborne Thermal Emission and Reflection Radiometer on NASA’s Terra satellite on 4 October 2005 (http://earthobservatory.nasa.gov/NaturalHazards/view.php?id=15612). The image also shows that most, if not all of the watershed associated with the Northern Drainage was burned, charred, or impacted by ash deposits. Padre noted “evidence of recent fire is present throughout the Shooting Range” while conducting a pre-construction biological survey in May 2008 (Padre, 2010). 1.4 Project-Related Permits and Agreements Prior to field mobilization for the 2012 construction activities, MWH, Geosyntec, and/or Boeing obtained necessary permits and access agreements, received regulatory approval, documented the Santa Susana site before the response action, cleared brush, located utilities, and performed other pre-field related activities more fully described below. Copies of project-related permits and agreements are provided in Appendix A. CDFW issued SAA #1600-2003-5052-R5 in 2003 (CDFW, 2003). CDFW also approved amendments and extensions of the SAA for all phases of work in the Northern Drainage through 1 December 2014. Biological monitoring was performed and documented in compliance with the CDFW SAA requirements during the installation of the stabilization measures. A report on two pre-activity biological surveys performed in August 2012 was submitted to CDFW after the first week of field work (MWH, 2012). The LARWQCB issued a CWA Section 401 Water Quality Certification (File No. 12-001) on 8 March 2012 (LARWQCB, 2012). This permit covers discharges to the unnamed ephemeral drainage flowing to Arroyo Simi, referred to as the Northern Drainage (Hydrologic Unit No. 403.67). The permit was issued to implement the proposed work “to restore remediated areas in the Northern Drainage to the condition the areas were in prior to soil, sediment, debris, and materials removal activities and to minimize soil erosion and sediment transport within and into the drainage. In-stream stabilization measures include check structures, bank protection (including toe protection), and culvert outlet energy dissipation. Additionally, demolition or removal of existing check structures and in-stream boulders, which direct flow into susceptible banks…” (LARWQCB, 2012). The U.S. Army Corps of Engineers (USACE) issued a permit verification to perform work in compliance with Nationwide Permit (NWP), Nos. 13 “Bank Stabilization” and 43 “Stormwater

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Management Facilities” (Permit No. SPL-2012-00015-AJS) on 6 July 2012 (USACE, 2012). This permit authorized Boeing to construct check structures comprised of ungrouted rock, construct energy dissipation structures each comprised of a grouted rock splash pool at the end of existing culverts, and place vegetated rock slope protection at various locations within the project reach (USACE, 2012). 1.4.1 Revisions to Project-Related Permits

No revisions to the project-related permits were requested in 2014. 1.4.2 Status of Other Agreements

No other agreements were in force in 2014. 1.5 Defined Project Boundaries of Restoration/Stabilization and Mitigation/Planting Areas Global Positioning System coordinates provided in Table II outline the project boundaries of the restoration/stabilization and mitigation/planting areas established in 2012. Project boundaries changed in 2014 due to major maintenance activities performed to correct erosion, settlement or failure of stabilization measures as shown in Table II and Figure 3. Figure 3 also shows each area’s position along the Northern Drainage relative to standard stations.

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2. RESTORATION AND STABILIZATION CONSTRUCTION ACTIVITIES 2.1 Restoration/Stabilization Activities Construction-related restoration/stabilization activities were conducted between 27 August and 23 November 2012 and included restoration of remediated areas in the Northern Drainage to their general condition prior to soil, sediment, debris, and materials removal activities (i.e., natural and self-sustainable conditions), and the installation of best management practices (BMPs) to minimize soil erosion and sediment transport within and into the Northern Drainage. The Surface Water Expert Panel provided significant input during the evaluation and proposal of the stabilization measures. The Panel members included Dr. Robert Gearheart (Humboldt State University), Jon Jones, P.E. (Wright Water Engineers, Inc.), Dr. Michael Josselyn (WRA Environmental Consultants), Dr. Robert Pitt (University of Alabama), and Dr. Michael Stenstrom (University of California-Los Angeles). The final design of restoration/stabilization measures in the Northern Drainage was completed on 31 July 2012 (Geosyntec Consultants, 2012) and restoration/stabilization activities began on 27 August 2012. The technical approach and design criteria are discussed in the “Northern Drainage Restoration, Mitigation and Monitoring Plan” ([RMMP]; Haley & Aldrich, 2011). Section 4 of the RMMP includes the design discharge, sources of sediment, and the location, selection, and sizing of stabilization measures. As discussed in the “Northern Drainage Final Completion Report” (Haley & Aldrich, 2012a), the engineered structures were installed by Innovative Construction Solutions, Inc., under the oversight of Geosyntec. The in-stream structural stabilization measures were completed by 20 September 2012. BMP installation was completed by 23 November 2012. Final as-built drawings of the Northern Drainage restoration/stabilization features are provided in Appendix B. Photographic documentation of pre- and post-construction activities in 2012 is provided in Appendix C. Photographic documentation of repairs made to areas impacted by construction access activity in 2012 is also provided in Appendix C. Photographic documentation of field activities in 2014 is provided in Appendix B. Table II summarizes restoration/stabilization measures by station as installed in 2012. These restoration/stabilization measures are documented in the Northern Drainage 2012 Annual Report (Haley & Aldrich, 2012b). The status of restoration/stabilization measures by station during water year 2014 is provided in Tables 2 and 3 of Appendix B. 2.2 Restoration/Stabilization Project Status Restoration/stabilization measures authorized by the 401 Certification and the NWP were completed in 2012. The status is complete. 2.3 Monitoring and Maintenance Activities by Year Table III presents the schedule of monitoring and maintenance activities planned on an annual basis. 2.3.1 2012

No monitoring or maintenance was performed on engineered restoration/stabilization measures installed during the 2012 reporting period of 1 January through 30 November. Construction of these measures was completed on 23 November. Baseline data were collected for comparison to future monitoring efforts.

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2.3.2 2013

Geomorphic monitoring efforts and recommended maintenance activities conducted by Geosyntec during water year 2013 were reported in the 2013 Annual Report (Haley & Aldrich, 2013).

2.3.3 2014

Geomorphic monitoring efforts were conducted by Geosyntec during water year 2014. Geosyntec’s full report is included as Appendix B. 2.3.3.1 Inspection of Stabilization Measures

Stabilization measures were inspected on 25 March 2014. An inspection between October and December 2013 was not performed because a significant geomorphic event (i.e., observed or measured runoff, fire, or construction within the Northern Drainage watershed) did not occur since the last time an inspection was performed on 25 March 2013. Similarly, a dry season inspection of all stabilization measures was not performed in 2014 due to a lack of rainfall after 25 March 2014 (0.34 inch) which yielded no measured or observed runoff at Outfall 009. Most stabilization measures present in the Northern Drainage were in good condition. Maintenance needs were observed on 25 March 2014 for four stabilization measures. Recommendations for maintenance were described in the memorandum “Northern Drainage Stabilization Measure Maintenance” dated 11 July 2014 (Geosyntec, 2014a).

2.3.3.2 Maintenance

The quantities of riprap imported for maintenance during 2014 (approximately 3 cubic yards of riprap, approximately 40 square feet in footprint and 17 linear feet in extent), when added to the quantities previously installed, were below the permitted maximum quantities. As described in Geosyntec’s memorandum (2014a), the existing permits and their conditions limit the riprap quantities placed within the USACE jurisdiction, below the ordinary high water mark (OHWM), to 4,300 square feet of riprap footprint, 330 cubic yards of riprap volume, and 250 linear feet of riprap bank reinforcement. The calculated as-built riprap quantities for the 2012 rehabilitation includes 3,989 square feet of riprap footprint, 279 cubic yards of riprap volume, and 208 linear feet of riprap bank reinforcement. These as-built quantities are conservative because not all of the riprap included was placed below the OHWM. Including the addition of the vegetated riprap bank reinforcement maintenance measure at STA 15+80 to 16+42, the riprap quantities associated with the Northern Drainage RMMP are still less than the permitted quantities (3,989 + 40 = 4,209 square feet, 276 + 3 = 279 cubic yards, and 208 + 17 = 225 linear feet).

As defined in Section 6.1 of the RMMP, “routine maintenance” includes activities appropriate to avoid major maintenance but the measure is still functioning as intended, such as removing limbs or brush, repositioning a few stones, adding or replacing anchor pins, etc. “Major maintenance”, on the other hand, is required when a measure is no longer functioning as intended (e.g., major maintenance would be performed to

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correct erosion, settlement or failure of riprap, other bank protection measures and check dams).

Maintenance implemented on 29 September 2014 included: STA 45+79: Replace Check Structure with Riprap Bank Reinforcement (major

maintenance). Localized failure of the right bank was partially caused by the presence of the check structure installed there in 2012. This failure was primarily caused by extended saturated soil conditions associated with ponded water on the downstream side of the check structure. The ponded water appeared to be due to a broken culvert obstruction at approximately STA 44+50.

STA 43+53: Lower Top of Check Structure (routine maintenance).

STA 39+00: Key in Check Structure and Adjust Flowline to Center of Channel (routine maintenance).

STA 15+80 to 16+42: Install Riprap Bank Reinforcement between Bank Reinforcement Segments (major maintenance).

Inspection of the maintenance performed was conducted on 29 September 2014. Details and photographs of the maintenance performed are included in Appendix B. Implemented maintenance is presented in Table IV. Debris buildup behind check structures has generally increased from that observed during water year 2013, but is an expected outcome and does not require maintenance or other action at this time. Cleanup of accumulated debris is suggested if it eventually threatens to change the flow path over the check structures (i.e., toward one of the channel banks away from the center).

2.3.3.3 Physical Survey

Repeat physical surveys were not performed in water year 2014 because observations from the qualitative monitoring efforts (i.e., photographic survey, stream walk, and/or stabilization measure inspections) indicated no significant change in channel geometry within the monitoring reaches.

2.3.3.4 Facies Mapping

Repeat facies maps were not performed in water year 2014 because the qualitative monitoring efforts (i.e., photographic survey, stream walk, and/or stabilization measure inspections) indicated no significant change to the bed and bank material within the monitoring reaches defined by the physical survey.

2.3.3.5 Photographic Survey

Appendix B contains photographs of stabilization measures (taken on 25 March 2014 and 29 September 2014) and cross-section locations (taken on 29 September 2014). Overview pictures of all reaches (taken 29 September 2014) and other noteworthy geomorphic conditions (taken 25 March 2014) are also provided in Appendix B.

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Overview photographs of Reach D were not taken on 29 September 2014 due to accessibility issues in the area related to a fire hazard.

2.3.3.6 Stream Walks

Stream walks spanning the entire Northern Drainage study reach were completed during the two stabilization measure inspections (March 2014 and September 2014). During the two stream walks, two types of noteworthy geomorphic conditions or changes were observed: areas of unvegetated soil that have potential for future rill erosion and a broken culvert obstruction within the main channel adjacent to the former LOX Plant. Five locations of unvegetated bare soil were observed outside of the main channel, and are likely attributable to minor rill erosion or deer trails. These features are not considered to be of geomorphic significance or require maintenance at this time. These locations are approximately located at STA 21+68, STA 27+10, STA 37+10, STA 43+53, and STA 49+81. Photographs are provided in Appendix B. A broken culvert obstruction is present in the main channel near STA 44+50. Clogging of the culvert may have contributed to failure of the riprap check structure at STA 45+79 by causing water ponding downstream of the check structure and thereby contributing to extended saturated soil conditions. Geosyntec does not suggest maintenance of the broken culvert obstruction at this time because: (1) with the replacement of the check structure at STA 45+79 with riprap toe reinforcement, the original mode of failure was eliminated and the likelihood of additional bank failure reduced; and (2) the obstruction functions as a non-engineered check structure trapping fine sediment in its backwater pool. Photographs are provided in Appendix B.

2.3.3.7 Conclusions

Only localized changes in channel morphology and stabilization measure integrity occurred in the Northern Drainage study reach during water year 2014 (Geosyntec Consultants, 2014; included as Appendix B of this report). During water year 2014: Stabilization measures effectively mitigated in-stream erosion caused by debris

removal activities; and

A vast majority of the stabilization measures functioned as anticipated with only two major and two minor maintenance needs identified and implemented.

Drought conditions continued in water year 2014, wherein rainfall was approximately one third of the average annual precipitation.

2.3.3.8 Recommendations

The following management actions are recommended by Geosyntec (2014b; included as Appendix B of this report) to continue the adaptive management approach specified in the RMMP.

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The broken culvert, located at approximately STA 44+50, which is near the former LOX Plant, should be inspected in future years as necessary.

During future stabilization measure inspections, particular attention should be given to continued foliage buildup and sediment deposition directly upstream of check structures.

Continue performing baseline inspections following future maintenance of specific stabilization measures.

The Northern Drainage annual geomorphic monitoring report, which the monitoring contractor (currently Geosyntec) submits to Boeing, should be completed following the end of the water year of interest. This allows for comprehensive documentation of all geomorphically significant events, monitoring measures, and maintenance actions that occur during a given water year. This is a revision to Section 7.1.7 of the RMMP (Haley & Aldrich, 2011) which states that, “the [annual geomorphic monitoring] report should be completed early enough in the dry season that proposed management actions that require construction can be implemented prior to the following rainy season.”

The following management actions, which were suggested based on lessons learned in water year 2013, should also be continued.

Repeat physical surveys are considered necessary only in years when channel

geometry adjustments have been observed in the Northern Drainage through qualitative monitoring efforts (i.e., photographic survey, stream walk, and/or stabilization measure inspections).

Monitoring measures are only considered necessary if a significant geomorphic event in the Northern Drainage watershed (i.e., observed or measured runoff, fire, or construction within the Northern Drainage watershed) has occurred since the last time that monitoring measure was performed.

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3. MITIGATION AND PLANTING ACTIVITIES Despite the 2005 Topanga Fire and the substantial soil and debris removal activities conducted between 2007 and 2010, much of the Northern Drainage has revegetated, both by natural recruitment and through previous planting efforts. From a vegetation perspective, the Northern Drainage is recovering naturally and will only be improved by continuing growth of mitigation plantings. Planting measures were designed to augment revegetation efforts conducted in 2010 and provide habitat value equivalent to pre-cleanup conditions or better. Planned 2012 plantings were completed from 29 October through 7 November 2012. Mulching around the plants and broadcast seeding using an approved native seed mix were completed by 19 November 2012. Planting measures during 2013 included replacement planting completed in March, November, and December and hydroseeding in December. Native species were planted to mimic the transition from ephemeral streambed/riparian habitat to adjacent upland scrubby or woodland habitats. Revegetated areas included portions of both banks of the Northern Drainage and adjacent slopes impacted by past project activities. Paragraph 7 of the 401 Certification authorizes 1.0 acre of erosion control and plantings (total). After implementation in 2012, the acreage of permanent impacts to waters of the Northern Drainage was determined to be approximately 0.1 acre. The reduction of impact area is partly due to natural revegetation and a few areas being identified as unsuitable for planting due to shallow topsoil and/or depth to bedrock. Monitoring will be conducted in the Northern Drainage for a minimum of five years, as required by the 401 Certification, CAO, and SAA. If additional areas are identified as impact areas and could benefit from plantings, these areas will be evaluated for plantings and potentially added to the total (but not to exceed 1.0 acre total). The status of mitigation/planting measures for water year 2014, including photographic documentation, can be found in Appendix C - Photographic Documentation of Site Conditions Prior to and After Field Activities and Appendix D - 2014 (Year 3) Mitigation Monitoring Report for Northern Drainage Restoration Project, Ventura County, California. Table II summarizes mitigation/planting measures by station as installed in 2012. These mitigation/planting measures are documented in the Northern Drainage 2012 Annual Report (Haley & Aldrich, 2012b). 3.1 Mitigation/Planting Activities by Year 3.1.1 2010

Previous planting activities were voluntarily conducted by Boeing at various locations throughout the Northern Drainage as part of interim BMPs described in the RMMP, including the installation of 1,797 native container plants during spring and summer 2010. Many of these planting areas overlap with planting areas established in 2012. Final as-built drawings for the 2010 planting effort are provided in Appendix E (2010 Figures 1A to 1E).

3.1.2 2012

Initial mitigation/planting was conducted and plantings, mulching, and seeding activities were completed by 19 November 2012. Table V presents the locations, species, quantity, type, and

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dates of planting activities in 2012. Final as-built drawings for the 2012 planting effort are provided in Appendix E (2012 Figures 1 to 4).

3.1.3 2013

Replacement plantings were installed in March 2013. DriWater® gel-pack replacements were installed at all container plant locations in March 2013 and every two to three months thereafter. Based on variable performance of the DriWater® packs in difficult conditions (hot summer temperatures, dry conditions, and coarse soil), plantings were also irrigated using a mobile water trailer and hose to deep soak each plant by hand on a weekly basis. Table V presents the locations, species, quantity, type, and dates of planting activities from 1 October 2012 to 30 September 2013.

3.1.4 2014

Replacement plantings were installed in November and December 2013. DriWater® gel-pack replacements were installed at all container plant locations until early February 2014. Plantings were also irrigated using a mobile water trailer and hose to deep soak each plant by hand on a weekly basis. By early February, the use of DriWater® packs was curtailed and the frequency of hand watering was increased to twice a week. Quarterly inspections are ongoing. Table V presents the locations, species, quantity, type, and dates of planting activities from 1 October 2013 to 30 September 2014. The replacement plantings occurred in the same locations depicted in the as-built drawings for the 2012 planting effort provided in Appendix E (Figures 1 to 4).

3.2 Mitigation/Planting Project Status and Delays by Year 3.2.1 2012

Status for 2012 is 100 percent complete. No delays occurred. 3.2.2 2013

Status for 2013 is 100 percent complete. No delays occurred. 3.2.3 2014

Status for 2014 is 100 percent complete. No delays occurred. 3.3 Monitoring Activities and Exotic Plant Control Efforts by Year 3.3.1 2012

No monitoring activities were conducted in 2012.

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3.3.2 2013

Periodic (approximately quarterly) inspection monitoring was initiated by Padre Associates, Inc. in December 2012, and annual mitigation monitoring was initiated in May 2013; both are ongoing. Hand weeding of the planting areas in a four- to five-foot diameter circle around each plant was completed in March to April 2013. Weeding focused on non-native annual grasses and thistles.

3.3.3 2014

Periodic (approximately quarterly) inspection monitoring and annual mitigation monitoring continued in 2014; both are ongoing. Hand weeding of the planting areas in a four- to five-foot diameter circle around each plant was completed in May 2014. Weeding focused on non-native annual grasses and thistles.

3.4 Planting-Specific Data by Year 3.4.1 2012

No planting-specific data were collected in 2012.

3.4.2 2013

Percent survival by plant species, percent plant cover, height of plant species of trees and shrubs, number of plants replaced, and overview of revegetation efforts for 2013 were summarized in the 2013 (Year 2) Mitigation Monitoring Report for Northern Drainage Restoration Project, Ventura County, California (Padre, 2013). All compliance criteria were met in Year 2 with the exception of one species. The southern California black walnut experienced high mortality rather quickly due to the dry conditions and replacement plantings were installed in March 2013. However, these replacement plantings also died off rather quickly. The native plant nursery described this particular species as extremely “fickle” and difficult to keep alive (Padre, 2013). The hand-broadcasted native seed mix had also experienced low success through 2013, but frequently requires at least two years to show any substantial progress.

3.4.3 2014

Percent survival by plant species, percent plant cover, height of plant species of trees and shrubs, diversity of plants, and percent invasive plants for 2014 are summarized in Table 3 of Appendix D. All compliance criteria have been met in Year 3 with the following exceptions: As in 2013, the southern California black walnut experienced high mortality; none were

observed as alive in the 2014 annual survey. Several of the willow species trees also are apparently dead, although some of the dead willows may actually be dormant and could regenerate if wetter conditions return to the region soon. As an alternative to walnut and willow trees, Fremont cottonwood trees were planted in November 2013 and exhibited 93 percent survival during the annual monitoring in May 2014.

13

The hand-broadcasted native seed mix has also experienced low success to date, despite the additional hydroseed application performed in December 2013. Drought conditions continued during the winter, resulting in low plant cover.

The height criterion was met by coast live oak trees, but not by the willow trees. Due to high dessication, willow trees did not meet the height criterion. The cottonwood trees planted as surrogates have the potential to meet the criterion if they survive.

Although the criterion for no woody invasive species was met, the overall invasive species criterion of 5 percent was exceeded by red brome comprising 7.5 percent of the species.

3.5 Demonstration of Project Success In accordance with Condition 18 of the Water Quality Certification, Padre assessed the Northern Drainage using the California Rapid Assessment Method for Wetlands and Riparian Habitats (CRAM), which uses both field diagnostics and existing data to demonstrate project success. CRAM Summary Assessment Reports are provided in Appendix D. The Northern Drainage was assigned an overall CRAM score based on landscape context, hydrology, biotic structure, and physical structure and was compared to the statewide average. There are two ways to measure project success. Compare the Northern Drainage’s CRAM scores collected over the five year monitoring period

to the first documented score; project success is determined by matching or exceeding the initial score.

In water year 2014, the average overall CRAM score was 84 points and this was the second documented score for the Northern Drainage.

Compare the Northern Drainage’s overall CRAM score to the statewide average for confined

riverine wetlands, which is 77 points according to available data; project success may be awarded by the end of the monitoring period if the Northern Drainage overall CRAM scores do not decrease significantly below the statewide average over time.

In water year 2014, the Northern Drainage’s overall CRAM score of 84 points was better than the statewide average score.

Performance standards described in the SAA after five years will also be used to demonstrate project success, specifically for the 85 replacement plantings located within the 2012 containerized planting areas. 3.6 Recommended Actions Based on an apparently substantial recovery of the Santa Susana site since excavation activities occurred in 2009, much of the Santa Susana site requires little or no follow-up measures at this time. The following actions are recommended for fall 2014 to summer 2015 within the 2012 planting areas: A Santa Susana site visit by regulatory agency staff may be warranted before any further

actions separate from regular maintenance activities are performed.

14

California black walnut will be discontinued from future planting efforts.

Installation of willow and cottonwood pole cuttings may be recommended to continue to reestablish or improve upon riparian woodland conditions within the Santa Susana site.

Hydroseeding of the approved native seed mix is recommended on the slope at STA 58+51.

Ongoing hand irrigation may be continued if drought conditions persist, but will be otherwise curtailed, especially during the rainy season. If irrigation is performed, it should include a deep soaking around each individual plant. Irrigation will be curtailed indefinitely once the project biologist determines that the plants are well-enough established to survive on their own.

Hand weeding of the planting areas in a four- to five-foot diameter circle around each plant should be completed at least twice a year, focusing on non-native annual grasses and thistles.

Quarterly inspections and annual monitoring should be continued until at least May 2016.

15

4. PROJECT STATUS AND SCHEDULE OF WORK 4.1 Project Status by Year For the overall project, all planned activities have been completed to date and the project status remains active and ongoing. Stations will be added, adjusted, and deleted from the Northern Drainage restoration/stabilization and mitigation/planting program as needed. Table VI summarizes the status (added, deleted, active, or inactive) of each station as of September of each reporting year. Table VI also provides a brief explanation for stations added or deleted in a given year. 4.1.1 2012

Planned activities for 2012 are 100 percent complete. Project status is active and ongoing.

4.1.2 2013

Planned activities for water year 2013 are 100 percent complete. Project status is active and ongoing.

4.1.3 2014

Planned activities for water year 2014 are 100 percent complete. Project status is active and ongoing.

4.2 Schedule of Work Figure 4 presents the planned work schedule for reporting years 2013 through 2017. The tasks are color coded to indicate the annual report in which task information will be reported. For instance, work planned to be performed in late fourth quarter (i.e., December) will be reported in the following year’s Annual Report and is therefore color coded with activities planned for the following year. 4.2.1 Restoration/Stabilization Annual Schedule of Work

Table III summarizes the planned annual monitoring schedule for restoration/stabilization measures, assuming all monitoring measures are necessary. A monitoring measure (e.g., inspection of stabilization measures, physical survey, facies map, photographic survey, or stream walk) is considered necessary only if a significant geomorphic event in the Northern Drainage watershed (e.g., observed or measured runoff, fire, or construction within the Northern Drainage watershed) has occurred since the last time that specific monitoring measure was performed.

Stabilization measures will be inspected at least three times per year to identify whether routine or major maintenance is required. These inspections will occur: (1) following storm events that are in excess of 1.5 inches of precipitation over a daily period as recorded by the Santa Susana site LARWQCB-approved rain gauge; (2) at least once every quarter during the rainy periods of October to March; and (3) at least once during the dry season.

16

Morphologic changes throughout the Northern Drainage will be measured once during the dry season by resurveying the established cross-sections and longitudinal thalweg profiles and comparing them over time. The physical surveys will provide a record of channel geometry such that in-stream erosional (deepening and/or widening) or depositional changes can be quantified. A repeat physical survey is considered necessary only in years when channel geometry adjustments have been observed in the Northern Drainage through qualitative monitoring efforts (e.g., photographic survey, stream walk, and/or stabilization measure inspections). Facies mapping will be repeated if significant changes to the bed and bank material are observed in the Northern Drainage that year through qualitative monitoring efforts. If the bed material consists of gravel and cobble, a Wolman pebble count will be conducted to characterize the grain size distribution. If the bed material is sand or finer, a sample will be collected for sieve analysis. Wolman pebble count, sieve analyses, and grain size distribution results will be reported as applicable.

A pair of georeferenced photographs, one looking upstream, the other looking downstream, will be obtained on an annual basis at each stabilization measure and physical survey cross-section. The photographs will provide a consistent image record throughout time.

A stream walk covering the entire Northern Drainage (i.e., from Outfall 009 to the shooting range, or a length of approximately 1.5 miles) will be conducted annually during the dry season by a qualified engineer or scientist. This will identify geomorphic changes in locations not otherwise monitored. If a segment of the channel is observed to be particularly sensitive to erosion or deposition, then the location will be photographed, georeferenced, and consideration given to adding a physical survey location so that the need for management actions can be better assessed.

Based on the adaptive management approach in the RMMP, Boeing and Geosyntec will assess the monitoring schedule and make adjustments based on lessons learned for any year as appropriate.

4.2.2 Mitigation/Planting Annual Schedule of Work

Planned annual mitigation/planting activities include:

Quarterly and annual monitoring;

A Santa Susana site visit by regulatory agency staff;

Repairing storm damage to planting areas after the rainy season as needed;

Hand irrigation weekly, or less frequently during periods of substantial rain or more frequently during hot, dry and/or windy periods;

Performing maintenance and weeding two times per year (spring and fall) in planting areas, including replacement plantings, as necessary;

Hydroseeding and/or hand-broadcasting, as and where needed, in planting areas; and

Taking photographs quarterly in planting areas.

17

In reporting year 2016, Boeing and Padre will perform botanical surveys and make adjustments to the schedule of annual mitigation/planting activities as appropriate.

18

5. WATER QUALITY MONITORING RESULTS The 401 Certification and the CAO require that if surface water diversions are installed in the drainage and surface water flows are present, then water quality monitoring and reporting would be required under a surface water diversion plan. Construction-related restoration/stabilization maintenance activities during the 2014 water year were conducted when there was no surface water flow. No surface water diversions were therefore required and no water quality samples collected.

19

REFERENCES 1. California Department of Toxic Substances Control (DTSC), 2007. Letter from Norman E.

Riley, DTSC, to Thomas Gallacher, The Boeing Company, and David King, National Aeronautics and Space Administration, re: “Imminent and Substantial Endangerment Determination and Order and Remedial Action Order, Santa Susana Field Laboratory (SSFL), Ventura County, California (CAD 093365435 and CA 1800090010).” 1 November.

2. California Department of Toxic Substances Control (DTSC), 2011. Letter from Rick Brausch, DTSC, to Thomas D. Gallacher, The Boeing Company, and Allen Elliott, National Aeronautics and Space Administration, re: “Certification of Completion for Imminent and Substantial Endangerment Determination and Order, Docket Number I/SED 07/08-002, Northern Drainage Area, Santa Susana Field Laboratory, Ventura County, California.” 29 April.

3. California Regional Water Quality Control Board Los Angeles Region, 2007. “Cleanup and Abatement Order No. R4-2007-0054 Requiring The Boeing Company, Santa Susana Field Laboratory to Cleanup and Abate the Effects of Contaminants Discharged to Surface Waters, in the Northern Drainage an Ephemeral Stream that Discharges to the Arroyo Simi, a Tributary to Calleguas Creek,” 6 November.

4. California Regional Water Quality Control Board Los Angeles Region, 2012. “Water Quality Certification for Proposed Northern Drainage Restoration Mitigation and Monitoring Project (Corps’ Project No. SPL-2012-15-AJS), Unnamed Ephemeral Tributary to Arroyo Simi, Simi Hills, Ventura County (File No. 12-001)”, 8 March.

5. Geosyntec Consultants, 2012. “Northern Drainage Restoration, Boeing Santa Susana Field Laboratory, Ventura County, California,” 31 July.

6. Geosyntec Consultants, 2013. “Northern Drainage Annual Geomorphic Monitoring Report, Water Year 2013, Santa Susana Field Laboratory,” November.

7. Geosyntec Consultants, 2014a. Memorandum from Judd Goodman, Brandon Steets, Chris Wessel and Michael Harding, Geosyntec Consultants, to Debbie Taege, The Boeing Company, re: “Northern Drainage Stabilization Measure Maintenance,” 11 July.

8. Geosyntec Consultants, 2014b. “Northern Drainage Annual Geomorphic Monitoring Report, Water Year 2014, Santa Susana Field Laboratory,” October.

9. Haley & Aldrich, Inc., 2011. “Northern Drainage Restoration, Mitigation and Monitoring Plan,” 11 October.

10. Haley & Aldrich, Inc., 2012a. “Northern Drainage Final Completion Report,” 29 October.

11. Haley & Aldrich, Inc., 2012b. “Northern Drainage 2012 Annual Report,” 17 December.

12. Haley & Aldrich, Inc., 2013. “Northern Drainage 2013 Annual Report,” 9 December.

20

13. Montgomery Watson Harza Americas, Inc. (MWH), 2008. “Northern Drainage Former Liquid Oxygen (LOX) Plant, Debris/Asbestos Removal Action Report, Santa Susana Field Laboratory, Ventura County, California,” February.

14. MWH, 2012. E-mail from Glenn Jaffe, MWH to Jeff Humble, California Department of Fish and Game, re: “Biological Field Monitoring Notes—Boeing SSFL Northern Drainage Restoration Project.” 7 September.

15. Padre Associates, Inc., 2010. “Former Rocketdyne-Atomics International Rifle & Pistol Club Inc. Shooting Range & Northern Drainage Biological Survey and Construction Monitoring Report – June 2009 to August 2010,” 25 August.

16. Padre Associates, Inc., 2013. “2013 (Year 2) Mitigation Monitoring Report for Northern Drainage Restoration Project, Ventura County, California,” October.

17. Padre Associates, Inc., 2014. “2014 (Year 3) Mitigation Monitoring Report for Northern Drainage Restoration Project, Ventura County, California,” September.

18. State of California Department of Fish and Game, 2003. “Streambed Alteration Agreement #1600-2003-5052-R5,” 7 October.

19. U.S. Army Corps of Engineers, 2012. “Certificate of Compliance with Department of the Army Nationwide Permit,” 6 July.

G:\41000_SSFL\2014 Annual Report_per the 401 and CAO and SAA\2014-1212_HAI_SSFL_ND Annual Rpt_per the 401_CAO_SAA_F.docx

TABLE IANNUAL REPORTING REQUIREMENTSSANTA SUSANA FIELD LABORATORYVENTURA COUNTY, CALIFORNIA

Page 1 of 1

Cleanup and Abatement Order No. R402007‐0054

Clean Water Act Section 401 Water Quality

Certification No. 12‐001

Streambed Alteration Agreement No. 1600‐

2003‐5052‐R5

Permit Revisions ‐‐‐ 19 d ‐‐‐ 1.4.1Status of other agreements or any delays in the mitigation process.

A xi ‐‐‐ ‐‐‐1.4.2 (agreements),

3.2 (delays)Defined Project Boundary (GPS Coordinates) A xi b 19 b ‐‐‐ 1.5, Table IIDescription of construction activities and all restoration and mitigation efforts

A xi 19 ‐‐‐ 2, 3

Monitoring activities and exotic plant control efforts. A xi f 19 g 45 3.3Percent survival by plant species and percent cover A xi 19 45 3.3Height of species of both trees and shrubs ‐‐‐ ‐‐‐ 45 3.4The number of species of plants replaced, an overview of revegetation and exotic plant control efforts, and the method used to assess these parameters.

‐‐‐ ‐‐‐ 453.4, (3.3 [exotic plant

control])

CRAM/Demonstrate Project Success ‐‐‐ 18 ‐‐‐ 3.5Project Status and Schedule of Work A xi c 19 c ‐‐‐ 4Water Quality Monitoring Results/Laboratory Certification A xi d, B v 19 e ‐‐‐ 5A certified Statement of "no net loss" of wetlands A xi e 19 f ‐‐‐ Cover letterA certified Statement from the permittee or his/her representative that all conditions of this Certification have been met.

‐‐‐ 19 h ‐‐‐ Cover letter

Declaration Statement ‐‐‐ 21 ‐‐‐ Cover letterColor Photodocumentation A xi a 19 a 45 Appendix C

Annual Reporting Requirement

Paragraph in the Order or Permit Containing the Annual Reporting Requirement

Section of This Document Where

Reported

HALEY & ALDRICH, INC.2014_1205_HAI_Table I ND 2014 Annual Report Matrix_F.xlsx DECEMBER 2014

TABLE IIRESTORATION/STABILIZATION AND/OR MITIGATION/PLANTING MEASURES AND GPS COORDINATES (2010 - 2012)SANTA SUSANA FIELD LABORATORYVENTURA COUNTY, CALIFORNIA

Page 1 of 9

Longitude Latitude Longitude Latitude

-118.69373669100 34.23843008730-118.69375516300 34.23844105010-118.69372525600 34.23846412160-118.69371547600 34.23844852900-118.69361337000 34.23842857090-118.69361830000 34.23843499880-118.69363569900 34.23842539740-118.69365140200 34.23842012510-118.69364828700 34.23841204140-118.69363707900 34.23841439740-118.69366051000 34.23841719660-118.69366835500 34.23841864760-118.69368025700 34.23841555680-118.69370580600 34.23841843290-118.69372586900 34.23842728680-118.69373182700 34.23842534490-118.69373179200 34.23842114650-118.69371540600 34.23841246180-118.69370801200 34.23840754280-118.69368275200 34.23840921390 -118.69361325100 34.23845124520-118.69353237800 34.23846153510 -118.69364223900 34.23844161140-118.69353565400 34.23846876860 -118.69357616300 34.23845217110-118.69354162700 34.23846854330 -118.69363646500 34.23843265030-118.69359474600 34.23844336160 -118.69368578100 34.23840017780-118.69359300100 34.23843527000 -118.69369743300 34.23840626730-118.69354224900 34.23845832930-118.69355937800 34.23844624870-118.69356627800 34.23844478790-118.69200916200 34.23830991480-118.69201923600 34.23831782490-118.69202677600 34.23831823980-118.69203002000 34.23831043520-118.69204509200 34.23828821260-118.69202925500 34.23828463910-118.69173347200 34.23819576750-118.69170647600 34.23817653250-118.69174579900 34.23819086100-118.69173843000 34.23817855960-118.69171126500 34.23821070110-118.69170273100 34.23819893110-118.69172177700 34.23816728590-118.69171313000 34.23815557340-118.69169103500 34.23818891650-118.69168142800 34.23817773140-118.69157050100 34.23825704690-118.69157172800 34.23826658130-118.69158639300 34.23826864420-118.69159459600 34.23828815790-118.69160232700 34.23828525120-118.69161031600 34.23827876470-118.69159835500 34.23825640990-118.69151230500 34.23818727100-118.69151221400 34.23817627950-118.69153537300 34.23817614710-118.69153546400 34.23818713870-118.69151198000 34.23805170620-118.69151914800 34.23804246650-118.69150013300 34.23803148660-118.69149210900 34.23804107110-118.69147395700 34.23789132360-118.69148528600 34.23787217610-118.69153639300 34.23795935340-118.69157113200 34.23804200440-118.69156604000 34.23798192080-118.69155768900 34.23794475590-118.69153209300 34.23790578090-118.69153494900 34.23804268900-118.69127352800 34.23778437310-118.69131180600 34.23779276720-118.69133896100 34.23780598340-118.69133089300 34.23781674470-118.69129862800 34.23780490650-118.69126503600 34.23779937340-118.69100798500 34.23781266200-118.69100387900 34.23780861030-118.69102540700 34.23779649100-118.69102912000 34.23780103980

Live Staking (pole cuttings) on the north slope, jute netting on the south slope, installed in November 2012.

Bottom of erosion control blanket stapled to ground in December 2013.

Post-2012 GPS Coordinates* (decimal-degrees)

24+60

23+00

23+50 and 23+79

Live Staking (pole cuttings) installed in November 2012.

24+60 to 25+79

24+05

Riprap check structure in September 2012 at 23+50.

Jute netting installed for erosion control in November 2012 at 23+79.

Riprap check structure installed in September 2012.


Bank toe protection with vegetated riprap installed at 24+60 to 25+20 and 25+79. Jute netting installed at 25+79.

Stuctural measures completed September 2012, bioengineering practices not practical to install due to lack of topsoil depth and

presence of solid rock beneath riprap. A modification resulted in the installation of additional riprap in November 2012.

Jute Straw Mat installed in September 2012.

Bank toe protection installed in September 2012.

GPS Coordinates (decimal-degrees)

15+75 Riprap check structure installed in September 2012.

StationRestoration / Stabilization and/or

Mitigation / Planting Measure

15+80 to 16+42

Bank toe reinforcement (riprap and natural riprap) installed in September 2012.

Soil bioengineering practices (live staking) not installed due to presence of underlying solid rock and absence of topsoil. Jute

netting installed for erosion control at 16+42.

Installed riprap bank reinforcement between bank reinforcement segments in September 2014.

21+68 Riprap check structure installed in September 2012.

2012

21+00 Jute netting installed for erosion control in November 2012.

26+33

HALEY & ALDRICH, INC.2014_1205_HAI_Table II Measures Summary_F.xlsx DECEMBER 2014


Page 2 of 9



GPS Coordinates (decimal-degrees)Station

Restoration / Stabilization and/or Mitigation / Planting Measure

-118.69108815800 34.23781968450-118.69108008600 34.23781221060-118.69107082400 34.23782577450-118.69107299500 34.23783824270-118.69108446700 34.23784184120-118.69109461300 34.23783514220-118.69109313900 34.23783148480-118.69109286700 34.23782404560-118.69108488700 34.23779271810-118.69106799000 34.23779991360-118.69109251100 34.23781718210-118.69110843300 34.23781387890

26+91 to 27+32 -118.69115677400 34.23781203950-118.69115709600 34.23782577680-118.69110882800 34.23782818920-118.69088445400 34.23795088310-118.69089338700 34.23794277380-118.69087347200 34.23792829270-118.69086513400 34.23793620300-118.69086627000 34.23792405400-118.69087998500 34.23793170770-118.69092605400 34.23787201450-118.69095328100 34.23784556450-118.69094047400 34.23783689230-118.69091074300 34.23786136770-118.68924526500 34.23767132730-118.68925845100 34.23767955310-118.68927685900 34.23765728110-118.68926347100 34.23764884650-118.68975523200 34.23775564950-118.68976515700 34.23775559290-118.68976502100 34.23773910560-118.68975509600 34.23773916220-118.68951893600 34.23762003380-118.68951864100 34.23758431130-118.68946605000 34.23758461100-118.68946616600 34.23762033440-118.68946262100 34.23762358050-118.68946979400 34.23765741280-118.68951402500 34.23765763770-118.68951550500 34.23762805030-118.68950858100 34.23762427250-118.68949075000 34.23762151160-118.68913100600 34.23760856010-118.68910780100 34.23759466640-118.68975523200 34.23775564950-118.68976515700 34.23775559290-118.68976502100 34.23773910560-118.68975509600 34.23773916220-118.68837724100 34.23738917580-118.68838716600 34.23738911940-118.68838700800 34.23736988420-118.68837708200 34.23736994070-118.68831792900 34.23737848060-118.68831775400 34.23736474420-118.68836646600 34.23736398930-118.68836623800 34.23737772620-118.68805335600 34.23734648880-118.68809396700 34.23735651780-118.68813553900 34.23737783280-118.68814485000 34.23736647580-118.68810048400 34.23734434370-118.68805944200 34.23733371940-118.68783331800 34.23733304930-118.68783912500 34.23734064990-118.68788013100 34.23734160470-118.68788330500 34.23733467380-118.68786570400 34.23728992760-118.68786240400 34.23723794430-118.68784912600 34.23722990910-118.68783878700 34.23722996790

--- --- -118.68758623900 34.23706786200--- --- -118.68758211800 34.23706309820--- --- -118.68761232600 34.23704616440--- --- -118.68761780100 34.23704985790

31+08

Live staking (pole cuttings) installed in November 2012.

Live Staking (pole cuttings) installed in November 2012.


Riprap check structure and jute netting installed in September 2012.

39+00

Riprap-lined gully (velocity dissipator), installed in September 2012.

Jute netting installed at 38+84.


37+55

Live Staking (pole cuttings) installed in October 2012.

32+78 Jute netting installed in November 2012.

Bank Toe Reinforcement with Vegetated Riprap, installed in September 2012.


Gravel-filled geocellular confinement system for road installed in September 2012.

Riprap bank and toe protection installed in September 2012.

31+98

32+68

Bank toe protection and jute netting on the south slope, installed in September 2012.

27+32

33+18

26+65

Live staking (pole cuttings) installed in October 2012.

Keyed in check structure and adjusted flowline to center of channel in September 2014.

35+88

35+99, 36+60 to 36+89

Live Staking (pole cuttings) installed in October 2012.

26+47



Page 3 of 9





-118.68757703000 34.23706559760-118.68757368000 34.23706057860-118.68758850900 34.23705331870-118.68759149200 34.23705849300-118.68748322300 34.23697421740-118.68748850800 34.23696424840-118.68747972800 34.23696103810-118.68747435300 34.23697087150-118.68732134000 34.23692452140-118.68733122000 34.23692702580-118.68734217600 34.23690051850-118.68733116400 34.23689728420-118.68723649500 34.23688398420-118.68724839400 34.23688414920-118.68724979600 34.23691973380-118.68723735500 34.23691968630-118.68708250200 34.23686017970-118.68707027200 34.23687062990-118.68707144200 34.23687871490-118.68709482600 34.23685003370-118.68711100300 34.23685032320-118.68706982200 34.23688685450-118.68710220500 34.23685728200-118.68711598700 34.23685682240-118.68718368800 34.23687513940-118.68717943200 34.23691638370-118.68717437800 34.23691641240-118.68715226200 34.23690928650-118.68711502000 34.23690682660-118.68708752100 34.23691576050-118.68718586600 34.23691650040-118.68723166100 34.23691959870-118.68723283700 34.23688386790-118.68719057100 34.23687663660-118.68649884500 34.23662463890-118.68651906700 34.23662371100-118.68654309300 34.23663004170-118.68654787600 34.23661739070-118.68652099700 34.23661140570-118.68650129800 34.23661105080-118.68654354900 34.23661263590-118.68655013000 34.23660817100-118.68655201200 34.23659121420-118.68654277900 34.23658607530-118.68655184400 34.23659734770-118.68666326700 34.23663821520-118.68628240000 34.23657595430-118.68641224300 34.23660727800-118.68641998600 34.23659883770-118.68637964600 34.23655479270-118.68636034300 34.23655452080-118.68633263500 34.23654930500-118.68623095200 34.23656124290 -118.68625321800 34.23658128310-118.68625086000 34.23656034830 -118.68624685800 34.23656294730-118.68624871700 34.23652742140 -118.68625166200 34.23656276040-118.68622889200 34.23652827580 -118.68625728700 34.23658061540

43+72 --- ---Containerized plantings planned, none planted. Station deleted

except for use of seedmix, completed November 2012.

-118.68602338700 34.23667453800-118.68604362200 34.23666463850-118.68604323400 34.23665090070-118.68600656600 34.23665122300-118.68600695500 34.23666496090-118.68600472900 34.23667222310-118.68604368100 34.23667017030-118.68604770300 34.23666982020-118.68602426800 34.23669761410-118.68600085900 34.23667313940-118.68600070400 34.23659833370-118.68600383200 34.23658762870-118.68601068700 34.23658300980-118.68603643900 34.23658515380-118.68603099100 34.23659319970-118.68603285300 34.23659624280-118.68601861500 34.23659708710

39+89

44+22

Riprap check structure in side gullies and pipes installed down drains in September 2012.

Velocity Dissipator, Bank Toe Reinforcement with Vegetated Riprap, installed in September 2012.


Check structure (natural riprap) installed in September 2012.

Containerized plantings and seedmix, completed November 2012.

Check structure (riprap) installed in September 2012.

Grouted and vegetated riprap energy dissipation at culvert outlet installed in September 2012.

40+11 to 40+65


Riprap check structure augmented in September 2012.

Lowered top of check structure in September 2014.

42+90 to 43+42

42+59

43+53



Page 4 of 9





-118.68571092500 34.23656800780-118.68571046800 34.23655427400-118.68575084300 34.23656627060-118.68575036400 34.23655268560-118.68580774700 34.23657013420-118.68580765000 34.23655639560-118.68586487800 34.23660748910-118.68586768400 34.23659394770-118.68578204100 34.23658242860-118.68578160900 34.23659708710-118.68573353100 34.23659994250-118.68573368400 34.23658620700-118.68571092500 34.23656800780-118.68571046800 34.23655427400-118.68575084300 34.23656627060-118.68575036400 34.23655268560-118.68580774700 34.23657013420-118.68580765000 34.23655639560-118.68586487800 34.23660748910-118.68586768400 34.23659394770-118.68578204100 34.23658242860-118.68578160900 34.23659708710-118.68573353100 34.23659994250-118.68573368400 34.23658620700-118.68564754700 34.23655326150-118.68564370900 34.23657915440-118.68564539900 34.23658349580-118.68563361400 34.23659203560-118.68562233100 34.23659473310-118.68562246100 34.23656015320-118.68550571000 34.23651409310 -118.68550355000 34.23651067460-118.68551560000 34.23651909310 -118.68550746900 34.23651902860-118.68552693300 34.23650180250 -118.68552595000 34.23652520540-118.68551653600 34.23649708930 -118.68553493800 34.23651953990

--- --- -118.68552583000 34.23652121360--- --- -118.68551189300 34.23651721900

-118.68545804300 34.23656207990-118.68543753900 34.23658337860-118.68541036000 34.23656418200-118.68541085100 34.23655685120-118.68542920000 34.23654163330-118.68540729200 34.23658921820-118.68540705500 34.23661631730-118.68541516300 34.23663654790-118.68538243700 34.23662432930-118.68539985700 34.23663506040-118.68541741600 34.23663797400-118.68538785700 34.23664976800-118.68537817200 34.23662449590-118.68543509400 34.23647105870-118.68543649200 34.23646219550-118.68544361600 34.23645681240-118.68545134800 34.23645829490-118.68539592200 34.23649152720-118.68540248300 34.23648624200-118.68548402800 34.23647533510-118.68549493200 34.23648596720-118.68549387500 34.23648874010-118.68548856100 34.23649075460-118.68548010100 34.23649019220-118.68548308400 34.23650868550-118.68546853600 34.23652069580-118.68543152500 34.23652543770-118.68542372300 34.23651951790-118.68540977700 34.23650003630-118.68541713400 34.23648663600-118.68543824300 34.23649574650-118.68546866200 34.23650113450-118.68545821800 34.23652328230

Riprap check structure in gully, pipe down drain with gravel berm inlet protection, bank toe reinforcement with vegetated riprap

installed in September 2012.

45+91

Containerized plantings and seedmix, completed November 2012.

Live staking (pole cuttings) and containerized plantings, installed in October 2012.

Live staking (pole cuttings) installed in October 2012.44+69 to 45+09

44+85 to 45+15

46+00 Containerized plantings and seedmix, completed November 2012.


Replaced check structure with riprap bank reinforcement in September 2014.

45+79

45+32 to 45+73



Page 5 of 9





-118.68531756900 34.23642674640-118.68529675800 34.23641064300-118.68519659900 34.23654523050-118.68521337000 34.23657344110-118.68524109300 34.23655694610-118.68523711800 34.23655511590-118.68522153700 34.23655371740-118.68522821800 34.23652791700-118.68527076000 34.23648194090-118.68525674500 34.23649881310-118.68522959600 34.23648309000-118.68524324500 34.23646652470-118.68502144800 34.23640763880-118.68503051500 34.23640380900-118.68502352200 34.23639159710-118.68531525500 34.23641113240-118.68532555800 34.23640038410-118.68537419100 34.23644832590-118.68538452100 34.23643759360-118.68531041600 34.23646495330-118.68531789800 34.23646681960-118.68534141200 34.23646239220-118.68534132600 34.23645189660-118.68525482500 34.23641040350-118.68526502700 34.23639364770-118.68480433400 34.23661812010-118.68484043800 34.23661743070-118.68482488700 34.23663219700-118.68482488100 34.23662310850-118.68481954700 34.23652336210-118.68482365500 34.23652199010-118.68482274000 34.23651102490-118.68481282400 34.23651159580-118.68481375300 34.23652256900-118.68501404300 34.23639565820-118.68454087600 34.23665412030-118.68454954100 34.23665009980-118.68453985900 34.23663570590-118.68453119400 34.23663972730-118.68438657300 34.23673204270-118.68441708500 34.23672959090-118.68441589200 34.23671588650-118.68438513500 34.23671835500-118.68396838700 34.23676752360-118.68396221200 34.23677656620-118.68394456100 34.23677590230-118.68394030000 34.23677180440-118.68394243900 34.23676370150-118.68394627500 34.23676077860-118.68396264200 34.23676175530-118.68330569100 34.23679253630-118.68333278000 34.23677578080-118.68331511800 34.23676528970-118.68329252000 34.23678345060-118.68311617600 34.23671219460-118.68316004900 34.23672628840-118.68317011200 34.23671227970-118.68317402000 34.23670684000-118.68317057700 34.23669321410-118.68316009000 34.23668926580-118.68314899800 34.23668150450-118.68314062000 34.23668250570-118.68317905500 34.23671847080-118.68320217500 34.23673047730-118.68320752100 34.23672666860-118.68319423500 34.23672033160-118.68317842400 34.23670874180-118.68272433500 34.23712672050-118.68272458200 34.23711469660-118.68270279700 34.23710594610-118.68268661900 34.23710832740-118.68283251100 34.23703708580-118.68282152700 34.23704258690-118.68279799600 34.23703098300-118.68279892000 34.23701752440

53+30


Containerized plantings. Bank toe reinforcement with vegetated riprap installed in November 2012.

53+90

Riprap check structure (natural riprap) installed in September 2012.49+31


46+52Riprap check structure in gully and pipe down drain with gravel

berm inlet protection installed in September 2012.

Live staking (pole cuttings) and containerized plantings, installed in October 2012.

48+31Pipes installed down drain with gravel berm inlet protection. Bank toe reinforcement with vegetated riprap), installed in

September 2012.

51+21

46+58Containerized plantings installed in November 2012.

46+38 to 46+43

49+81

Maintain existing riprap check structure, completed in September 2012.




Page 6 of 9





-118.68314104800 34.23679300060-118.68315973200 34.23679480370-118.68317285100 34.23679188880-118.68318065900 34.23679015340-118.68318446300 34.23679871940-118.68319038500 34.23682039330-118.68316187900 34.23683534280-118.68312283400 34.23684844580-118.68310486800 34.23682898660-118.68303257500 34.23672087090-118.68311686100 34.23671513440-118.68314139600 34.23673026230-118.68317542300 34.23674700640-118.68314765600 34.23678179870-118.68310086600 34.23683139470-118.68309653800 34.23682879470-118.68308799600 34.23683790830-118.68307066700 34.23682607820-118.68308857300 34.23680307710-118.68306089500 34.23671998260-118.68308866900 34.23670956860-118.68312922700 34.23678734230-118.68312633100 34.23678449610-118.68312436000 34.23677086180-118.68315413000 34.23674211740-118.68315872900 34.23674256840-118.68316363600 34.23674564210-118.68316655100 34.23675087370-118.68314037500 34.23678083940-118.68310695400 34.23683626950-118.68309954800 34.23684370690-118.68315532200 34.23678242470-118.68318093800 34.23675413200-118.68318523600 34.23675291490-118.68319100600 34.23675598380-118.68319506600 34.23676073110-118.68304886300 34.23669244420-118.68305306500 34.23669473660-118.68307985300 34.23669477940-118.68311425300 34.23670556630-118.68313837900 34.23667536250-118.68304579600 34.23669077010-118.68303150600 34.23667138570-118.68303865100 34.23665989540-118.68306198400 34.23664745440-118.68310954800 34.23664775850-118.68312345500 34.23666256500-118.68300714600 34.23670193070-118.68304697800 34.23670043830-118.68314035800 34.23667288910-118.68314369000 34.23667584730-118.68308422900 34.23670400650-118.68306531700 34.23670090730-118.68300780300 34.23664181430-118.68302089700 34.23662742790-118.68311716700 34.23664991350-118.68311962600 34.23664781610-118.68311295400 34.23664109820-118.68310647000 34.23664056230-118.68308965900 34.23664145870-118.68306953500 34.23664191580-118.68306097600 34.23664036110-118.68303354900 34.23665803450-118.68303277400 34.23666445090-118.68176623000 34.23689646210-118.68177688300 34.23686130640-118.68178587700 34.23685373570-118.68179450500 34.23684773400-118.68179221000 34.23684398640-118.68169003900 34.23684510870-118.68166128100 34.23684190390-118.68163177900 34.23683266930-118.68162045600 34.23683210650-118.68161596400 34.23683651880-118.68161563900 34.23684278750-118.68163389400 34.23689560100-118.68178809400 34.23684114620-118.68168383000 34.23684006390-118.68162771100 34.23682606740

Bank toe reinforcement with fiberschine.Containerized plantings and seedmix, completed November 2012.

53+87 to 54+39 Containerized plantings and seedmix, completed November 2012.

53+90 to 54+37

Live staking (pole cuttings).

Grouted and vegetated riprap energy dissipation at culvert outlet installed in September 2012.

58+35 to 58+81



Page 7 of 9





-118.68088672900 34.23651781880-118.68089323800 34.23651683550-118.68089016000 34.23650278730-118.68088234600 34.23650457040-118.68144963600 34.23665408560-118.68146098300 34.23663957390-118.68145057500 34.23663501280-118.68144131200 34.23664959570

60+94 --- ---Soil bioengineering planned. Station deleted due to shallow

bedrock.-118.67857750500 34.23632202440-118.67855654800 34.23631748620-118.67851926200 34.23633070950-118.67849888800 34.23633425870-118.67806373700 34.23633277770-118.67809165200 34.23633901060-118.67810659700 34.23633406200-118.67811761400 34.23633247580-118.67813737200 34.23633255340-118.67815553100 34.23633743200-118.67815543800 34.23632369250-118.67814256000 34.23632040890-118.67811819600 34.23631949330-118.67810534000 34.23632071040-118.67809150100 34.23632527150-118.67774711900 34.23644796050-118.67776326600 34.23645670190-118.67778624100 34.23645657330-118.67781973400 34.23644755020-118.67782006800 34.23643381370-118.67778568900 34.23644512630-118.67776362100 34.23644372350-118.67774723300 34.23643422070-118.67775360500 34.23641952090-118.67777579900 34.23642508780-118.67779398500 34.23642493320-118.67781028200 34.23642180090-118.67781044400 34.23640806540-118.67779225100 34.23641392730-118.67777706600 34.23641254750-118.67775291800 34.23640579370

74+30 --- ---Containerized plantings planned, none planted. Station deleted

because plantings were combined with other downstream locations.

-118.6770860000 34.23705600000-118.6770900000 34.23704900000-118.6770670000 34.23703900000-118.6770630000 34.23704700000-118.67620277100 34.23723024340-118.67616698400 34.23718044460-118.67613571300 34.23734524630-118.67620459300 34.23734168070-118.67607016600 34.23741590750-118.67611235500 34.23735746250-118.67613571300 34.23734524630-118.67620459300 34.23734168070-118.67607016600 34.23741590750-118.67611235500 34.23735746250

Riprap check structure.75+42

69+08

78+87 to 79+05

Three rolls of fiberschine for stream bank toe protection installed in November 2012. Placement of additional fiberschine not

recommended due to installation disturbance causing more damage than it is protecting against.

Live staking (pole cuttings) installed in November 2012.71+51

70+40 Live staking (pole cuttings) installed in November 2012.

59+64 Riprap check structure (natural riprap) installed in September 2012.

Bank toe reinforcement with fiberschine

Bank toe reinforcement with fiberschine

79+37 to 79+55

79+63 to 79+87

Live staking (pole cuttings) installed in November 2012.



Page 8 of 9





-118.67523829400 34.23772758450-118.67539091800 34.23770369000-118.67554498400 34.23757687960-118.67562994600 34.23757068030-118.67567360800 34.23757139070-118.67581232300 34.23753531180-118.67589454000 34.23747378580-118.67601019600 34.23742733960-118.67602144400 34.23739769750-118.67612859400 34.23729404850-118.67615816000 34.23725667060-118.67615303200 34.23719086150-118.67615516700 34.23717081200-118.67626235500 34.23707193350-118.67639226600 34.23708361170-118.67649362800 34.23711644110-118.67655401800 34.23712198690-118.67701886300 34.23717811520-118.67706963500 34.23714337170-118.67709688400 34.23706402310-118.67709714900 34.23703997650-118.67708734000 34.23696369770-118.67709654100 34.23690830430-118.67714154900 34.23684851230-118.67713953700 34.23682715010-118.67722665700 34.23680376250-118.67724490100 34.23678686700-118.67724749400 34.23676662410-118.67722770600 34.23670643120-118.67721747300 34.23669122180-118.67722043000 34.23665914510-118.67724420900 34.23664489030-118.67741176200 34.23646297810-118.67746916900 34.23645884010-118.67752415700 34.23643983050-118.67763352500 34.23643998150-118.67773158200 34.23637702960-118.67786392500 34.23637705180-118.67796272600 34.23634920900-118.67806294300 34.23635418170-118.67812500600 34.23638589410-118.67836504000 34.23637767880-118.67841411700 34.23636633540-118.67845913300 34.23633593120-118.67850508800 34.23633624610-118.68188798100 34.23685065980-118.68201948900 34.23685727290-118.68208210700 34.23685182860-118.68211750500 34.23684936630-118.68222073700 34.23681314470-118.68230251300 34.23681834080-118.68233327300 34.23683174440-118.68237597200 34.23680604670-118.68240665300 34.23680983370-118.68246240900 34.23679820510-118.68268865300 34.23672904390-118.68274675300 34.23675417310-118.68288216300 34.23673813490-118.68290512000 34.23671367990-118.68302000500 34.23668644320-118.68305430400 34.23671623220-118.68314508600 34.23674004530-118.68321431900 34.23679396250-118.68333281800 34.23679216210-118.68344962100 34.23674964000-118.68416811600 34.23674048880

WRA-Planting Area-Sage Ranch

ND-PLANT 16 & 17ND-PLANT 18 & 19

ND-PLANT 25 through 32

2010

Containerized plantings, installed in May 2010.



Page 9 of 9





-118.67854323000 34.23633641390-118.67873736000 34.23633418020-118.67878847200 34.23634706110-118.67883035800 34.23638384800-118.67888508100 34.23638869360-118.67894297800 34.23638836880-118.67900384200 34.23638554640-118.67902182300 34.23639288810-118.67926999400 34.23645286760-118.67930610100 34.23648529760-118.67941156200 34.23648527810-118.68006124200 34.23651585620-118.68010576000 34.23654615440-118.68039590300 34.23654508920-118.68044437500 34.23655895940-118.68048692500 34.23659831980-118.68066468600 34.23659732010-118.68068100800 34.23659439970-118.68070005100 34.23659089840-118.68072586700 34.23658283320-118.68076439300 34.23654641110-118.68088279900 34.23653329940-118.68107830500 34.23653672500-118.68117054100 34.23657184550-118.68129381600 34.23657115160-118.68137535300 34.23663065770-118.68142847700 34.23663035860-118.68148746500 34.23668094020-118.68164656100 34.23681298590-118.68170593900 34.23682792560-118.68174915200 34.23686501890-118.68179207400 34.23686647430-118.68896561100 34.23746388950-118.68923720400 34.23768952050-118.68932009200 34.23769174750-118.69070081900 34.23796079820-118.69081798500 34.23795898440-118.69094128600 34.23786553510-118.69104306900 34.23783747380-118.69108550100 34.23780059130-118.69126326500 34.23779156100-118.69133522300 34.23782435510

*Refer to Table IV for summary of post-2012 activities.

Containerized plantings, installed in May 2010.

--- indicates no data

WRA-Planting AreaND-PLANT 1 through 15

ND-PLANT 23ND-PLANT 24


TABLE IIINORTHERN DRAINAGE RESTORATION/STABILIZATION MONITORING SCHEDULESANTA SUSANA FIELD LABORATORYVENTURA COUNTY, CALIFORNIA

Page 1 of 1

Monitoring Method Monitoring Schedule

Inspection of Stabilization Measures1

Following storm events in excess of 1.5 inches of precipitation over a daily (24-hour) period as recorded by the rain gauge that is used for NPDES reporting purposes.

Once every quarter during the rainy season (October to December and January to March).

Once during the dry season (early summer).

Physical Survey2 Once every dry season (early summer).

Facies Mapping3 Once every dry season (early summer).

Photographic Survey1 Once every dry season (early summer).

Stream Walk1 Once every dry season (early summer).

Annual Monitoring Report Once after the completion of the water year of interest (early fall).

Notes:

1 Qualitative monitoring measures are considered necessary only if a significant geomorphic event in the Northern Drainage watershed (i.e., observed or measured runoff, fire, or construction within the Northern Drainage watershed) has occurred since the last time that specific monitoring measure was performed.2 Physical Survey is only necessary if significant changes to channel geometry are observed in the Northern Drainage through qualitative monitoring measures that water year.

3 Facies Mapping is only necessary if significant changes to bed and bank material are observed in the Northern Drainage through qualitative monitoring measures that water year.

HALEY & ALDRICH, INC.2014_1205_HAI_Table III Monitoring Schedule_F.xlsx DECEMBER 2014

TABLE IVMAINTENANCE OF STABILIZATION MEASURES (2013 - 2014)SANTA SUSANA FIELD LABORATORYVENTURA COUNTY, CALIFORNIA

Page 1 of 1

Station Maintenance

STA 26+33Minor Maintenance: Bottom of erosion control blanket stapled to the ground

STA 15+80 to 16+42Major Maintenance: Installed riprap bank reinforcement between bank reinforcement segments

STA 39+00Routine Maintenance: Keyed in check structure and adjusted flowline to center of channel

STA 43+53 Routine Maintenance: Lowered top of check structure

STA 45+79Major Maintenance: Replaced check structure with riprap bank reinforcement

2013

2014

HALEY & ALDRICH, INC.2014_1205_HAI_Table IV Stabilization Meas Maintenance_F.xlsx DECEMBER 2014

TABLE VDETAILED PLANT SPECIES COUNT (2012 - 2014)SANTA SUSANA FIELD LABORATORYVENTURA COUNTY, CALIFORNIA

Page 1 of 3

Station Marker Species QuantityApproximate Date

PlantedNotes

STA 43+00 North Bank

Baccharis pilularis 5 11/7/2012 Driwater & mulch

Baccharis salicifolia 10 11/7/2012 Driwater & mulch

Quercus agrifolia 5 11/7/2012 Driwater & mulch

Salix laevigata 3 11/7/2012 Driwater & mulch

Sambucus mexicana 3 11/7/2012 Driwater & mulch

SSFL Seedmix #1 Per plan 11/19/2012 Hand broadcast

Quercus agrifolia 4 11/21/2013Driwater & mulch; hand irrigate only

after February 2014

Sambucus mexicana 4 11/21/2013Driwater & mulch; hand irrigate only

after February 2014

Eriogonum fasciculatum 4 11/21/2013Driwater & mulch; hand irrigate only

after February 2014

Populus fremontii 4 11/21/2013Driwater & mulch; hand irrigate only

after February 2014

Rhamnus ilicifolia 4 11/21/2013Driwater & mulch; hand irrigate only

after February 2014

SSFL Seedmix #1 Per plan 12/4/2013 Hydroseed

STA 45+75, 45+95 & 46+57

North & South Banks






Juglans californica 3 11/7/2012 Driwater & mulch


SSFL Seedmix #1 Per plan 11/19/2012 Hand broadcast


after February 2014


after February 2014


after February 2014

Salvia mellifera 2 11/21/2013Driwater & mulch; hand irrigate only

after February 2014

Artemisia californica 2 11/21/2013Driwater & mulch; hand irrigate only

after February 2014


after February 2014


after February 2014

Keckiella cordifolia 4 11/21/2013Driwater & mulch; hand irrigate only

after February 2014


Containerized Plantings

HALEY & ALDRICH, INC.2014_1205_HAI_Table V Plant Species Count_F.xlsx DECEMBER 2014


Page 2 of 3

Containerized Plantings


PlantedNotes

STA 53+87 & 53+98 North & South Banks






Sage Ranch Mix Per plan 11/19/2012 Hand broadcast


after February 2014


after February 2014


after February 2014

Salvia mellifera 13 11/21/2013Driwater & mulch; hand irrigate only

after February 2014

Artemisia californica 13 11/21/2013Driwater & mulch; hand irrigate only

after February 2014


after February 2014


after February 2014


STA 58+51








Sage Ranch Mix Per plan 11/19/2012 Hand broadcast

Sage Ranch Mix Per plan 12/4/2013 Hydroseed

Sub-total: 322



Page 3 of 3


PlantedNotes

STA 22+73 Baccharis salicifolia 14 11/2/2012 North & South Banks

Salix lasiolepis or S. laevigata 8 11/2/2012

STA 26+57 Baccharis salicifolia 12 11/2/2012 North Bank


STA 27+35 Baccharis salicifolia 19 11/2/2012 South Bank








STA 40+53 Baccharis salicifolia 24 10/30/2012 Channel Center



Salix lasiolepis 3 10/30/2012




Salix laevigata 6 10/30/2012

STA 49+97 Salix laevigata 8 10/30/2012 South Bank











Sub-total: 427

Live Staking (Pole cuttings)


TABLE VISTATION STATUS BY YEARSANTA SUSANA FIELD LABORATORYVENTURA COUNTY, CALIFORNIA

Page 1 of 3

15+75 Active Active Active

15+80 to 16+42 Active Active Active




23+50 and 23+79 Active Active Active















35+99, 36+60 to 36+89

Active Active Active






StationStatus as of

December 2015Status as of





December 2013

HALEY & ALDRICH, INC.2014_1205_HAI_Table VI Station Status By Year_F.xlsx DECEMBER 2014


Page 2 of 3

StationStatus as of






December 201342+90 to 43+42 Active Active Active

43+72

Deleted. Planned containerized plantings were not planted. Approved seed mix only applied to the area.

Inactive Inactive


43+72Station deleted except for use

of seedmix, completed November 2012.

Inactive Inactive


44+90

Deleted. Planned containerized plantings were

re-distributed to Stations 45+32 to 45+73, 45+79, and

46+58.

Inactive Inactive




45+79 Active ActiveActive. Check structure

replaced with riprap bank reinforcement.













Page 3 of 3

StationStatus as of






December 2013

53+84Deleted. Planned soil

bioengineering installed near 53+90.

Inactive Inactive






60+94

Deleted. Presence of shallow bedrock disqualified use of planned soil bioengineering

measures.

Inactive Inactive





74+30Deleted. Planned plantings combined with downstream

locations.Inactive Inactive

88+71

Deleted. Incorrectly identified for restoration/stabilization and/or mitigation/planting in the Final Completion Report.

Inactive Inactive





1 = A description of all active stations can be found in Tables 1, 2, and 3 of the Northern Drainage Annual Geomorphic Monitoring Report, Water Year 2014 (Appendix B).


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THE BOEING COMPANYSANTA SUSANA FIELD LABORATORYVENTURA COUNTY, CALIFORNIA

SITE LOCATION

SCALE: AS SHOWNDECEMBER 2014 FIGURE 1

©

UNDEVELOPEDLAND

AREA I

UNDEVELOPEDLAND

AREA IIAREA III

AREA IV

SAN FERNANDOVALLEY

SIMI VALLEY LEGENDBOEING SSFL PROPERTY BOUNDARY

SSFL ADMINISTRATIVE BOUNDARYNORTHERN DRAINGEWATERSHED DIVIDE

NOTE:ALL LOCATIONS AND DIMENSIONS ARE APPROXIMATE.

FORMERSHOOTING RANGE

SCALE IN FEET

0 3,000 6,000

AMERICAN JEWISH UNIVERSITY,BRANDEIS-BARDIN CAMPUS

San Bernardino

RiversideImperialSan

DiegoLos Angeles

Ventura

Santa Barbara

Orange

Kern

SITE COORDINATES : 118° 40' 25.84" W 34° 14' 13.85" N

SAGE RANCH PARK (MOUNTAIN RECREATION

AND CONSERVATION PROPERTY)

NORTHERN DRAINAGE

NPDES

OUTFALL 009

FORMER

LOX PLANT

FORMER

SHOOTING

RANGE

BOEING

AREA I

NASA

AREA I

BOEING

MOUNTAINS RECREATION AND

CONSERVATION AUTHORITY

(SAGE RANCH PROPERTY)

AREA II

LANDFILL

AREA I

LANDFILL

NASA

AREA II

N

W E

S

0 400 800

SCALE IN FEET

G:\41000_S

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LO

BA

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N.D

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FIGURE 2

THE BOEING COMPANY

NORTHERN DRAINAGE AREA

SANTA SUSANA FIELD LABORATORY

VENTURA COUNTY, CALFIORNIA

SITE PLAN

SCALE: AS SHOWN

DECEMBER 2014

1. ALL LOCATIONS AND DIMENSIONS ARE APPROXIMATE

LEGEND:

OUTFALL LOCATION

EXISTING ROAD

PROPERTY BOUNDARY

EXISTING GROUND ELEVATION (FEET)

NORTHERN DRAINAGE

NOTES:

14+0014+00

15+0015+00

16+0016+00

17+0017+0018+0018+00 19+0019+00 20+00

20+00

21+0021+0022+0022+00

23+0023+00 24+0

024

+00

25+0025+00

26+0026+00

27+0

027

+00

28+0028+00

29+0029+00

30+0030+00 31+0031+0032+0032+00

33+0033+00

@

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THE BOEING COMPANYSANTA SUSANA FIELD LABORATORYVENTURA COUNTY, CALIFORNIA

NORTHERN DRAINAGE STABILIZATION AND PLANTING MEASURES THROUGH 30 SEPTEMBER 2014SCALE: AS SHOWNDECEMBER 2014 FIGURE 3SCALE IN FEET

0 100 200©

50

NOTES:1. ALL LOCATIONS AND DIMENSIONS ARE APPROXIMATE.2. AS-BUILT DRAWINGS IN APPENDIX B PROVIDE MORE ACCURATE POSITIONING.

58+0058+00

59+0059+00

60+0060+00

61+0061+00 62+00

62+00 63+0063+0064+0064+00

65+0065+0066+0066+00

67+0067+0068+0068+00

69+0069+0070+0070+00 71+0071+00

72+0072+00

73+0

073

+00

74+0074+00

75+0

075

+00

76+0076+00

77+0077+0078+0078+00

79+0

079

+00

80+0080+00

81+0081+00

LEGENDSTATION MARK AND ID

THALWEG

CULVERT

CULVERT MAINTENANCE HEADWALL

FIBERSCHINE

FIBER ROLLS

GRAVEL BAG BERM

LIVE STAKING

LOOSE GRAVEL BERM

2011 AS-BUILT

BANK REINFORCEMENT NATURAL RIP RAP

BANK REINFORCEMENT RIP RAP

CHECK STRUCTURE NATURAL RIP RAP

CHECK STRUCTURE RIP RAP

GEO CELL

GROUTED RIP RAP

JUTE STRAW MAT

LIVE STAKING

PLANTING AREA - CONTAINER

VELOCITY DISSIPATOR

16 +00

39 +00

43 +50

46 +00

34+0034+00

35+0035+00 36+0036+00

37+0037+00 38+0038+00

39+0039+00

40+0040+00

41+0041+00

42+0042+00

43+0043+00 44+0044+00 45+0045+00

46+0046+00

47+0047+00

48+00

48+00

49+00

49+00

50+0050+0051+0051+00 52+

0052+

00 53+0053+00

54+0054+00 55+0055+00

56+0056+00 57+0057+00

ND-PLANT 25THROUGH ND-PLANT 32


ND-PLANT 16 & 17

ND-PLANT 18 & 19

ND-PLANT 23

ND-PLANT 24



60+00

OUTFALL 009

FORMERLOX PLANT

FORMER SHOOTINGRANGE

AA A 'A 'AA A 'A ' BB

B 'B 'BB

B 'B '

ID Task Name Duration Start

0 Figure 4: Detailed Schedule

1366days

Thu 11/1/12

1 Restoration / Stabilization -- Periodic O&M Requirements

1310 days Mon 12/3/12

2 Inspect Stabilization Measures (Q4)

1063 days Mon 12/3/12

8 Perform Major Maintenance, as needed

1064 days Tue 1/1/13

14 Inspect Stabilization Measures (Q1)

1063 days Fri 3/1/13


1063 days Fri 3/29/13

26 Inspect Stabilization Measures (early summer)

1063 days Mon 6/3/13


1063 days Mon 7/1/13

38 Geo-referenced Photos of Stabilization Measures

1063 days Mon 6/3/13

44 Facies Mapping (as needed)

1063 days Mon 6/3/13

50 Annual Stream Walk 1063 days Mon 6/3/13

56 Monitoring Reaches Annual Physical and Photo Survey

1063 days Mon 6/3/13

62 Re-assess Monitoring Schedule

80 days Tue 7/1/14

63 Annual R/S O&M Report 1120 days Mon 7/1/13

69 Implement Mgmt Actions in O&M Report

1115 days Mon 9/2/13

75 Mitigation / Planting -- Periodic O&M Reqs

1324 days Thu 11/1/12

76 Survival Study 1063 days Thu 8/1/13

82 Perform Botanical Survey 40 days Fri 8/1/14

83 Repair Storm Damage After Rainy Season Ends

1110 days Mon 4/1/13

89 Perform Maintenance / Weeding 2 times per year

1195 days Mon 4/1/13

90 Spring 1065 days Mon 4/1/13

96 Fall 1064 days Tue 10/1/13

102 Hydroseed, where needed 1324 days Thu 11/1/12

109 Provide Irrigation 826 days Fri 3/1/13

Re-assess Monitoring Schedule Re-assess Monitoring Schedule

Perform Botanical Survey Perform Botanical Survey

Replace Dri Water packs, if used, every 90 days: March, June, September, December

Qtr 4 Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1 Qtr 22012 2013 2014 2015 2016 2017 2018

Task

Split

Milestone

Summary

Project Summary

External Tasks

External Milestone

Inactive Task

Inactive Milestone

Inactive Summary

Manual Task

Duration-only

Manual Summary Rollup

Manual Summary

Start-only

Finish-only

Progress

Deadline

Figure 4_Detailed Schedule_2014 Update.mpp

Page 1

Project: Figure 4: Detailed ScheduleDate: Wed 11/5/14

ID Task Name Duration Start

110 Take Color Photos Quarterly

1195 days Fri 3/1/13

111 Q1 Photos 1063 days Fri 3/1/13

117 Q2 Photos 1063 days Mon 6/3/13



134 Annual M/P O&M Report (includes CRAM analysis required by RWQCB permit #12-001)

1074 days Tue 9/3/13

140 Implement Mgmt Actions in O&M Report

1084 days Mon 12/2/13

146 Combined 401 Certification, SAA, and CAO Annual Report

1340 days Thu 11/1/12

147 Generate Annual Report 1340 days Thu 11/1/12

148 Generate Annual Report 1

36 days Thu 11/1/12


36 days Fri 11/1/13


36 days Mon 11/3/14


36 days Mon 11/2/15


36 days Tue 11/1/16


36 days Wed 11/1/17

154 Submit Annual Report 1304 days Thu 12/20/12

Combined Annual Reporting for RWQCB 401 Certification, RWQCB CAO, & CDFG SAA

Qtr 4 Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1 Qtr 22012 2013 2014 2015 2016 2017 2018

Task

Split

Milestone

Summary

Project Summary

External Tasks

External Milestone

Inactive Task

Inactive Milestone

Inactive Summary

Manual Task

Duration-only

Manual Summary Rollup

Manual Summary

Start-only

Finish-only

Progress

Deadline

Figure 4_Detailed Schedule_2014 Update.mpp

Page 2

Project: Figure 4: Detailed ScheduleDate: Wed 11/5/14

THE APPENDICES FOR THIS DOCUMENT CONTAIN LARGE PHOTOGRAPHIC FILES

PLEASE CONTACT THE DTSC CHATSWORTH OFFICE

OR THE BOEING COMPANY TO REVIEW THESE FILES

Documents

NORTHERN DRAINAGE 2014 ANNUAL REPORT - dtsc · PDF filenorthern drainage 2014 annual report ... r4-2007-0054 streambed alteration agreement no. 1600-2003-5052-r5 ... in 1972, the rocketdyne