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HomeMy WebLinkAbout09 - Big Canyon Creek Restoration ProjectTO: FROM: SUBJECT: CITY OF NEWPORT BEACH CITY COUNCIL STAFF REPORT Agenda Item No. 9 April 28, 2009 HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL Public Works Department Mark Reader, Project Manager 949 - 644 -3311 BIG CANYON CREEK RESTORATION PROJECT - APPROVAL OF AMENDMENT NO. 2 TO PROFESSIONAL SERVICES AGREEMENT WITH VA CONSULTING, INC. FOR SELENIUM MONITORING RECOMMENDATIONS: 1. Approve Amendment No. 2 to Professional Services Agreement with VA Consulting, Inc. for on -site selenium monitoring and upstream selenium source tracking for the Big Canyon Creek Restoration Project for a total fee of $81,761 and authorize the Mayor and City Clerk to execute the Agreement. 2. Approve a Budget Amendment transferring $41,761 from 7014- C5100969 (Irrigation Smart Controller Program) to Account No. 7014- C5100709 (Big Canyon Creek Restoration); and recognizing $40,000 from a contribution from the County of Orange Nitrogen Selenium Management Program and appropriating $40,000 to Account No. 7251- C5100709. BACKGROUND: VA Consulting Inc. (VA) is completing the final construction documents and permit applications for the Big Canyon Creek Restoration Project. The concept design for the restoration as envisioned in the Feasibility Report has changed in important ways in order to address elevated concentrations of selenium that have been found in the sediments, water column and tissue samples of invertebrates and fish. The measured water column selenium concentration in some cases exceed by a factor of ten, the California Toxic$ Rule freshwater chronic criterion of 5 micrograms per liter. The City and Regional Water Quality Control Board (RWQCB) have been working together on the Big Canyon Creek Restoration project since 2004. The RWQCB has partially funded the preparation of the feasibility study and final construction documents. When the selenium problem became apparent last summer (2008), the City and RWQCB began discussions on how to address this issue while keep the project on track to begin construction in Fall 2009. As selenium treatment technology is still in its initial development stages with pilot projects indicating that treatment could be very costly, RWQCB and City staff have agreed to move in a deliberate manner to monitor the extent of selenium problem; Big Canyon Creek Restoration — Approval of Amendment No. 2 to Professional Services Agreement with VA Consulting, Inc. April 28, 2009 Page 2 find, as possible, the selenium sources; and continue research on potential mitigation solutions. With this approach, the RWQCB can issue the required 401 permit for this project Under this contract amendment, VA will complete the baseline monitoring by having its subconsultant, CI-112M Hill, collect bird eggs from Big Canyon and analyze the tissue for evidence of selenium toxicosis. Water column and sediment samples in adjacent areas will also be collected and analyzed for selenium. Additionally, CH2M Hill will collect surface water, water from groundwater seeps and sediment samples in upstream areas to try and ascertain potential sources of selenium. With the completion of the baseline survey and upstream source identification program, the results will be a guide to identify selenium treatment source controls or remediation options and allow us to document improvements once these controls are in place. Funding Availability: The City's current CIP budget includes general funds set aside to match an expansion of the smart irrigation controller program which is part of the Newport Coast runoff reduction program. While the City has been awarded a Proposition 84 grant, State funds are currently frozen and no date has been given on when these funds will be available. At the time Proposition 84 funds become available, the smart irrigation controller program will advance primarily with grant funds. The status of match funding will be reviewed by staff and presented for Council consideration as needed once more information is available. It is recommended that $41,761 be transferred from the smart irrigation controller program to the Big Canyon Creek restoration project for monitoring and tracking of selenium. Also, the County of Orange will contribute $40,000 from its Nitrogen Selenium Management Program (NSMP) for this sampling and analysis work. Upon approval of the recommended Budget Amendment, sufficient funds will be available in the following accounts for this project: Account Description Big Canyon Creek Restoration Orange County NSMP Contribution Prepared by: Mark Reader Project Manager Account Number Amount 7014- C5100709 $41,761 7251- C5100709 40,000 Total: $81,761 Submitted by: Attachment: Amendment to PSA with VA Consulting Inc. Scope of Services prepared by VA Consulting Inc, nd CH2MHill. aoum Director AMENDMENT NO. TWO TO PROFESSIONAL SERVICES AGREEMENT WITH VA CONSULTING, INC. FOR BIG CANYON CREEK RESTORATION PROJCT THIS AMENDMENT NO. TWO TO PROFESSIONAL SERVICES AGREEMENT, is entered into as of this day of ' 2009, by and between the CITY OF NEWPORT BEACH, a Municipal Corporation ( "CITY "), and VA CONSULTING, INC., a California Corporation whose address is 17801 Cartwright Road, Irvine, California, 92614 ( "CONSULTANT "), and is made with reference to the following: RECITALS: A. On December 11, 2007, CITY and CONSULTANT entered into a Professional Services Agreement, hereinafter referred to as "AGREEMENT ", for engineering design services for the Big Canyon Creek Restoration Project, hereinafter referred to as "PROJECT ". B. CITY and CONSULTANT have entered into one separate AMENDMENT of the AGREEMENT, the latest dated January 27, 2009. C. CITY desires to enter into this AMENDMENT NO. TWO to reflect additional services not included in the AGREEMENT or prior AMENDMENT and to extend the term of the AGREEMENT to December 31, 2010. D. CITY desires to compensate CONSULTANT for additional professional services needed for PROJECT. E. CITY and CONSULTANT mutually desire to amend AGREEMENT, hereinafter referred to as "AMENDMENT NO. TWO ", as provided here below. NOW, THEREFORE, it is mutually agreed by and between the undersigned parties as follows: 1. In addition to the services to be provided pursuant to the AGREEMENT and AMENDMENT NO. ONE, CONSULTANT shall diligently perform all the services described in AMENDMENT NO. TWO, including but not limited to, all work set forth in the Scope of Services attached hereto as Exhibit 1 and incorporated herein by reference. The City may elect to delete certain tasks of the Scope of Services at its sole discretion. 2. City shall pay Consultant for the services on a time and expense not -to- exceed basis in accordance with the provisions of this Section and the Schedule of Billing Rates attached to this AMENDMENT NO. TWO for all work performed pursuant to this Amendment. Consultant's compensation for all work performed in accordance with this AMENDMENT NO. TWO, including all reimbursable items and subconsultant fees, shall not exceed Eighty One Thousand Seven Hundred Sixty One Dollars and no /100 ($81,761.00) without prior written authorization from City. 3. The term of the AGREEMENT shall be extended to December 31. 2010. 4. Except as expressly modified herein, all other provisions, terms, and covenants set forth in AGREEMENT shall remain unchanged and shall be in full force and effect. IN WITNESS WHEREOF, the parties hereto have executed this AMENDMENT NO. TWO on the date first above written. APPROVED AS TO FORM: By: A4 -�-- ( _ _ H o Mynette D. Beauchamp Assistant City Attorney for the City of Newport Beach ATTEST: By: Leilani Brown City Clerk Attachments: Exhibit A — Scope of Services CITY OF NEWPORT BEACH, A Municipal Corporation By: Edward D. Selich Mayor for the City of Newport Beach VA CONSULTING, INC.: By: Max P. Vahid President and C.E.O. Michael S. Carter Secretary and C.F.O. EXHIBIT 1 VAI CONSULTING April 16, 2009 Mr. Mark Reader Project Manager City of Newport Beach 3300 Newport Boulevard Newport Beach, CA 92663 Dear Mr. Reader: This letter is a change order request for additional engineering design services for the Big Canyon Restoration Project (Project) located in the City of Newport Beach (City), California (Professional Services Agreement dated December 11, 2007). This change order supersedes our previous letter dated April 15, 2009. As you are aware, the City has requested that additional material sampling and testing be undertaken within Big Canyon. These additional services are related to establishing the base- line selenium levels within Big Canyon prior to implementation of the proposed Project. Upon approval of this change order request, VA will retain CH2M Hill to provide the sampling and testing services in accordance with its scope -of -work (Exhibit "B "). A summary of the overall scope of services included in this request is provided in Section I and fees are provided in Section If of this letter. VA will provide our services on a time -and- materials, not -to- exceed basis in accordance with the attached fee schedule (Exhibit "A "). SCOPE OF SERVICES Phase I I — Preliminary Source Tracking and Selenium Monitoring CH2M Hill will collect samples and conduct testing in accordance with their scope -of -work (Exhibit "B "). 2. Administration, Coordination, and Sub - Consultant Management This task provides for subconsultant management, coordination, and review of subconsultant work - product as the Project progresses. The total VA fee for this task is $3,893 and will be billed on a time- and - materials basis. VA Consulting, Inc. Coipiome Office Orange County Division 6400 Oak Canyon, Suite 150 Irvine. CA 92618 Phone 949.474.1400 Fax 949.261.8482 XIR[.WA373 W0&0dn rc,COn..rtpCnm 'eek_of i4[9.a .. Mr. Mark Reader City of Newport Beach April 16, 2009 Page 2 of 2 II. FEES Phase II — Preliminary Source Tracking and Selenium Monitoring --------- ...$77,868 2. Administration, Coordination, and Sub - Consultant Management ................$3,893 TOTALFEES ................................................ ............................... ........................$81,761 Please indicate your approval of this change order request by signing in the space provided below and returning a copy to our office. If you have any questions regarding this request, please feel free to contact Dan Villines or me at (949) 474 -1400. Sincerely, Max P. Vahid, P.E. President and CEO MPVJkam Enclosure cc: Dan Villines Contracts xwinae�sr? amwmmroa, egev.,aiGew. a�cmmc EXHIBIT "A" VA CONSULTING, INC. FEE SCHEDULE 2009 Staff Classification Civil Engineering and Planning Services President.............................................................. ............................... Division President/Division Manager .................... ............................... Sr. Vice President/Vice President/ Exec. Director ............................... Director................................................................ ............................... Senior Project Manager ....................................... ............................... ProjectManager ................................................... ............................... Assistant Project Manager ................................... ............................... Senior Project Engineer /Senior Design Supervisor /Senior Planner..... Project Engineer /Design Supervisor ..................... ............................... Senior Design Engineer /Senior Designer ............. ............................... Design Engineer / Planner ..................................... ............................... Designer............................................................. ...........................I ".. Assistant Engineer /Assistant Planner ................... ............................... Research and Processing Coordinator ................. ............................... Senior CADD Technician ..................................... ............................... JuniorEngineer .................................................... ............................... CADD Technician Hourly Rate ....................... $190 ....................... $173 ..................... $163 ....................... $160 ........................................................... ............................... EngineeringIntern .......................................................... ............................... Office Support/Clerical ................................................... ............................... Field Survev and Marmina Services Director of Survey and Mapping .......... ............................... Manager of Field Survey ........................ ............................... Survey and Mapping Associate ............. ............................... Survey and Mapping Technician ............ ............................... 3 -Man GPS Crew ................................... ............................... 2-Man GPS Crew ................................... ............................... 1 -Man GPS Crew ................................... ............................... Special Services Litigation . ............................... Notes: 1. In -house reprographics charges: B &W Bond copies $1.00 /sq.tt, Color Bond $6.00/sq.ft. .......I ........ $155 ................ $147 ................ $142 ................ $137 ................ $132 ................ $122 ................ $117 .............. $110 ................ $100 ................. $95 .................. $90 .................. $85 .............. I... $80 .................. $70 .................. $69 ........... $158 ........... $130 ........ $95 .............. $75 ............ $235 ............ $205 ............ $175 2. Mileage will be billed at standard mileage rates set by IRS. 2009 rates currently listed at $0.55 per mile. ....... $450 x!A 13 � _s%rMar+.k_ --CW � G -OCAS EXHIBIT "B" Dan Villines, P.E. Director of Water Resources VA Consulting, hx. 17501 Cm-1 - vrihht ROild Irvine, C A 92614 Dear Mr. Villines: CH2A4 HILL is pleased to provide this cost proposal for a scope of work to conduct the Big Canyon wash selenium monitoring and source tracking in Newport Beach, California. Thi• monitoring and tracking will be conducted in Big Canyon Wash and along its tributaries. CH2M HILL will collect LIP to 21 water samples for selenium speciation from Big, Canyon Wash freshwater pond outlet, mid -pond, inlet, and below Jamboree Road. CH2M HILL, will collect up to three samples for water column particulate selenium from three of the water quality sampling sites. CH2M HILL will collect algae, benthic and water column invertebrates, fish, and bird eggs from the Nahrre Park pond for total selenium analysis. CH2M HILL will compare the results with the 2008 sampling and bird eggs will be compared to concentrations found in other parts of the Newport Bay watershed. Bird eggs will be opened and embryos evaluated for effects characteristic of selenium toricosis before sending them to the laboratory for chemical analyses. CH2M HILL will collect flow estimates from up to ten locations for the area from the eastern end of the Big Canyon golf course to just downstream of Back Bay Drive at the western end of Big Canyon Creek Nature Park. Flow estimates will lie conducted) at the time of surface water quality sample collection. Flow will be estimated by measuring average depth, cross - section width, and velocity (using standard hand -held field velocity meter). It is estimated that the sample collection, and analysis and reporting for the Big Canyon Wash seleniunn source - hacking Program will take three months to complete. T'he detailed scope and budget are attached and a sununary of Lhe tasks and estimated costs are aS follows. CH2M HILL 2,185 NWORxes P8rk 01 r S.Ne WO Sacramento, CA 95833 Tel 8816- Fax 928.6463 April 16, 2009 Dan Villines, P.E. Director of Water Resources VA Consulting, hx. 17501 Cm-1 - vrihht ROild Irvine, C A 92614 Dear Mr. Villines: CH2A4 HILL is pleased to provide this cost proposal for a scope of work to conduct the Big Canyon wash selenium monitoring and source tracking in Newport Beach, California. Thi• monitoring and tracking will be conducted in Big Canyon Wash and along its tributaries. CH2M HILL will collect LIP to 21 water samples for selenium speciation from Big, Canyon Wash freshwater pond outlet, mid -pond, inlet, and below Jamboree Road. CH2M HILL, will collect up to three samples for water column particulate selenium from three of the water quality sampling sites. CH2M HILL will collect algae, benthic and water column invertebrates, fish, and bird eggs from the Nahrre Park pond for total selenium analysis. CH2M HILL will compare the results with the 2008 sampling and bird eggs will be compared to concentrations found in other parts of the Newport Bay watershed. Bird eggs will be opened and embryos evaluated for effects characteristic of selenium toricosis before sending them to the laboratory for chemical analyses. CH2M HILL will collect flow estimates from up to ten locations for the area from the eastern end of the Big Canyon golf course to just downstream of Back Bay Drive at the western end of Big Canyon Creek Nature Park. Flow estimates will lie conducted) at the time of surface water quality sample collection. Flow will be estimated by measuring average depth, cross - section width, and velocity (using standard hand -held field velocity meter). It is estimated that the sample collection, and analysis and reporting for the Big Canyon Wash seleniunn source - hacking Program will take three months to complete. T'he detailed scope and budget are attached and a sununary of Lhe tasks and estimated costs are aS follows. Task Se Itoring and Initial Source Tracking Project .4dministratil�n (including; I site meeting,, fol Istaff, and I teleconference) Sample Collection I'a I;C) —rato r v_A I —,,, I I V,-i i I —C1 Q) L-1 i I v Laboratoi Y Anal.Y.qis - Sojenium Spi�cw,5 Laboratory Analysis- Particulate fraction Selenium Laboratory Analysis - hinta Total Laboratory Ana]yses Subcontractor overhead chirgo: 10%' . .... ..... I., --- ---- Embr.yo Analysis Sample Preparation and Pick-up . ... .... . . ....... 11 TOTAL Sincerely, Ron Weddle Contracts ManagOr N,. of Sa-nn pl e qCost l"Si ate .1 (if 6iL S 9,192 20 'S 250 $ 4,515 $ 480 S 6.100 16,345 1,635 1,584 . .... ..... S 1,660 — --------- $ 100 $ 22,458 __ 577,868 BIG CANYON WASH WETLANDS RESTORATION PROJECT SELENIUM MONITORING PHASE 11 — PRELIMINARY SOURCE TRACKING and SELENIUM MONITORING PROJECT Introduction Big Canyon Wash is a small tributary drainage to Upper Newport Bay that drains a watershed of approximately 2 square miles (Figure 1). The majority of the watershed (approximately 96 %) is highly developed with homes, commercial areas, a golf course, cernetery, and other urban features. The 60 -acre undeveloped portion of Big Canyon Wash (Big Canyon Creek Nature Park) has been identified by the Southern California Wetlands Recovery Project (SCWRP) as an important resource that is in need of restoration. The City of Newport Beach was directed by the City Council to move forward with restoration efforts in the canyon (Weston, 2007). Weston Solutions was hired to establish baseline water quality conditions in the canyon and to assess appropriate design elements that could be incorporated into the restoration plan to address identified existing or future water quality issues (Weston, 2007). The resultant study conducted by Weston Solutions (2007) showed that water column concentrations throughout the lower part of Big Canyon west of Jamboree Road exceed the California Toxics Rule (CTR) freshwater chronic criterion for selenium of 5 micrograms per liter (pg /L) under both wet and dry conditions. In addition, investigations by Southern California Coastal Research Project (SCCWRP; Sutula et al., 2008) have indicated that selenium concentrations in soils in the lower portion of Big Canyon Wash (near Back Bay Drive) exceed the selenium screening value for substantial ecological risk of 4 milligrams per kilogram (mg /kg) dry weight (Presser et al. 2004). Selenium is a bioaccumulative compound that has been associated with reproductive impairment in fish and birds. Ecological risk screening values for selenium are shown in Table 1. Table 1. Ecological Risk Screening Levels for Selenium Media Ecological Risk Level (mg/ q dw T None Marginal Substantive _ Freshwater <2 AIL 2 -5 /L >5 /L Sediment <2 2 -4 _ >4 Diet fish & birds " 3 -7 >7 Fish Tissue <4 4-6 >6 .- ..._... Bird Egg Tissue -- <6 -- - 6 -10 >10 (Source: Presser et al., 2004) The sources of selenium in the watershed have not all been identified. The steep cliffs that rim Big Canyon Wash are formed primarily of the Miocene Monterey Formation. This formation is a known source of selenium in California and is a likely source of selenium in Big Canyon. Selenium may have also accumulated in the canyon bottom soils, especially in the freshwater marsh areas. The changes in canyon hydrology and the areas tributary to Big Canyon Wash as the watershed has developed have likely contributed to the mobilization of selenium. Urban landscape irrigation, the construction of an 18 -hole golf course in the up- gradient part of the canyon east of Jamboree Road (Figure 1), Big Canyon Reservoir, and storm drain systems that discharge to the canyon, have changed the canyon's flow regime from ephemeral to perennial. This has resulted in significant changes in habitat and has likely contributed to the high selenium concentrations that have been found in the soils and water in the canyon. A baseline monitoring study in the Big Canyon Creek Nature Park was recently completed by CH2M HILL. From June 9 -11, 2008, CH2M HILL staff collected samples of water, sediment, and biota from different areas within the nature park to evaluate selenium concentrations and potential impacts in the food webs in the area Samples were collected from the up- gradient portion of the canyon just west of Jamboree Road, in the freshwater marsh and riparian areas in the upper and middle sections of the canyon, and in the fresh and salt water marshes in the lower part of the canyon. Biological samples collected and submitted for analysis included algae, dragonfly larvae, crayfish, mosquito fish, fathead minnows, and African clawed frogs No nesting birds were observed at the time and therefore, no bird eggs were collected. Several of the water column samples were also submitted for selenium speciation analysis. The data collected indicate that selenium concentrations in sediment and the biota in the park are extremely high — an order of magnitude higher than the concentrations measured in biota in the San Diego Creek watershed — despite the fact that the total selenium concentrations in the surface waters in Big Canyon Creek are similar to those measured in the lower part of San Diego Creek (Table 2). The selenium concentrations in water, sediment, and tissue collected from Big Canyon Creek Nature Park all exceeded the ecological risk screening values shown in Table 1. Selenium concentrations in sediment as high as 122 mg /kg dry weight (dw) were found in the lower freshwater marsh ponds. Fish tissue concentrations in this area range from 58 -64 mg Se /kg dw, and algae and dragonfly larvae selenium concentrations exceed 30 mg /kg dw. Selenium concentrations in sediment and biota were elevated throughout the park, even in the middle and upper sections of the canyon. Selenium concentrations in sediment at these locations, though not as elevated as that seen in the lower freshwater marsh ponds, are still elevated well above screening levels (20 -27 mg Se /kg dw; Figure 4) and algae, crayfish, fish (fathead minnow and mosquito fish), and frogs were also extremely high (35 -57 mg /kg dw). Table 2. Comparison of Median Selenium Concentrations in Surface Waters in San Diego Creek Basin No. 2 and the Biq Canyon Creek Nature Park Water 15 p /L 19 /L Sediment 0.5 m /k d weight 54 /k m d wei ht Macroinvertebrates 7 m /k d weight 2 m fk d wei ht 7 m /k d weight 57 k d m / weight Selenium speciation data indicate that the selenium in the surface flows that enter the nature park from upstream of Jamboree Road is composed of a significant amount of the more bioavailable inorganic form of selenium known as selenite (Se IV) than the flows in the San Diego Creek watershed. Approximately 21 percent ( %) of the selenium in the baseflow in the canyon was composed of selenite, 78% was selenate (Se VI), and less than 1% was organic selenium (primarily, methylselenic acid). Since the majority of selenium in groundwater is in the form of selenate (this is supported locally by the data collected from storm drain #1 [LBCW- SD #1], which flows year round due to groundwater leakage into the storm drain, the presence of so much selenite in the flows at the upper end of the park indicate that it is likely that conversion of selenate to selenite is occurring upstream of the park. Within the nature park, the percentage of selenite continues to increase downstream with 30- 40% of the selenium in the lower freshwater marsh ponds being composed of selenite. The percentage of organic selenium also increases from less than I% at the upper end of the park to nearly 3% in the ponds. The presence of the relatively high proportions of selenite in the surface waters in the park is the most likely reason for the extremely high concentrations of selenium in sediment, algae, invertebrates, frogs, and fish. The concentrations of selenium in the fish and frogs are well into to the range of selenium concentrations that are associated with deformities (teratogenesis) in fish and birds. It is likely that turtles and some birds may be similarly affected. It is therefore, very important that the sources of selenium in the surface water flows that enter the park, and the mechanism(s) for the conversion of selenate to selenite that occur(s) up- gradient of the park, be identified so that steps may be taken to try to control, mitigate, or eliminate them before the surface waters enter the park. The sources of selenium also need to be identified so that the plans for the nature park restoration can be modified, if necessary, to incorporate selenium treatment or source controls, or, if impairment due to selenium continues to occur under post- restoration conditions, additional remediation options can be considered. Potential Sources of Water Selenium and Selenium Conversions in the Big Canyon Watershed Sources within the Nature Park There are seven storm drains that have been identified in the nature park. Five of these drains are located on the north side of the canyon and two on the south side. The westernmost storm drain on the north side of the canyon (SD #1) appears to flow perennially and has a small catchment area at its discharge point. Water flows from the catchment into the riparian area located along the northern side of the lower part of the canyon. Given the volume of the flow from this drain, it is likely that the drain is intercepting groundwater. The selenium concentration measured in the water from this drain during the recent baseline monitoring investigation was 13 µg /L. Based on CH2M HILL's recent reconnaissance and sampling in the nature park, one other flowing storm drain (SD #3) was identified along the north side of the canyon. The selenium concentration in the water flowing from this drain was very low ( <5 µg /L). Groundwater may also surface within the canyon itself, though CH2M HILL staff did not see any obvious signs of groundwater seepage while they were conducting the baseline monitoring investigation. However, baseflow in the creek has not been sequentially measured from the up- gradient to the down gradient end of the creek to determine if rising groundwater is contributing to the surface flows. Big Canyon Golf Course The Big Canyon Golf Course and Country Club is located upstream of the nature park between Jamboree Road and MacArthur Boulevard (Figure 1). This privately owned and operated golf course was constructed in Big Canyon Wash in the late sixties /early seventies and opened in 1971. Several lakes and creeks can be seen on the course (Figure 2). According to golf course personnel (Jeff Beardsley, Big Canyon Country Club greens supervisor, personal communication, May 20, 2008) there was no visible water present when the golf course was constructed. Currently, surface flows enter the golf course at three main locations east of MacArthur Boulevard (Figure 2). Mr. Beardsley has estimated the flows from each of these drainages. The northernmost stream enters the golf course through a 30- inch pipe at a flow rate of about 25 gallons per minute (gpm) and drains the northern "port" streets area of Newport Hills Estates. The middle stream enters the course through a 72 -inch pipe at a rate of approximately 100 gpm and drains the southern port streets area of Newport Hills Estates. The southernmost stream flows onto the course at a rate of about 90 -100 gpm through a 72 -inch pipe; the drainage extends up to Big Canyon Reservoir and drains this area and the residential areas located just west of the reservoir. Additional water flows from storm drains from the residential areas located within and adjacent to the Big Canyon golf course. All of this water flows through the golf course into their ponds and riparian areas. The flows join near the west end of the golf course, just east of the maintenance building, then exit the course and flow through a large culvert that extends underneath Jamboree Road to the nature park (Figure 2). Mr. Beardsley has estimated that approximately 300 gpm in surface water exits the golf course and enters the nature park (faxed map received August 6, 2008). Mr. Beardley has also observed that irrigation from upstream residences in the morning hours results in noticeable increases in the surface water flows that enter the golf course. The surface water that enters the golf course is not used for irrigation, but feeds the lakes and creeks that dot the course. The course uses approximately 60% reclaimed water from the Irvine Ranch Water District and 40% potable water from the Green Acres project to irrigate their greens. The lakes on the golf course may be converting selenate to selenite, which would explain the high concentrations of selenite in the surface waters entering the Big Canyon Nature Park. Tributary Streams to Big Canyon Creek As previously noted, three main drainages (Big Canyon Wash north, middle and south branches) appear to conduct surface flows from the upstream areas through the Big Canyon golf course where they join prior to continuing down into the nature park and Upper Newport Bay. The south branch passes through the Harbor View Nature Park which appears to contain a riparian corridor. If the surface waters in this branch of the creek contain selenium, there may be some conversions of selenate to selenite occurring in this part of the tributary. There also may be other areas within the three tributaries where selenium conversions could occur if selenium is present within surface water flows. Big Canyon Reservoir The Big Canyon Reservoir is a 23 -acre facility that was constructed in 1958 as a drinking water reservoir and has a capacity of 195 million gallons (George Murdock, City of Newport Beach, personal communication, May 15, 2008). The reservoir is owned and operated by the City of Newport Beach Utilities Department and was recently fully covered (as of September 2004) to prevent water loss from evaporation and contamination from airborne pollutants. Though the reservoir is asphalt -lined and underlain by a five -foot deep clay layer, it does leak and a system of underdrains and piezometers around the reservoir track the rate and amount of leakage. This slow leakage from the reservoir likely contributes to groundwater recharge. The water table at the base of the reservoir dam is around eight (8) feet below grade (George Murdock, City of Newport Beach, personal communication, May 15, 2008). Pacific View Memorial Park Pacific View Memorial Park cemetery and mortuary (Figure 1) opened in 1958 in Corona del Mar. The 45 -acre facility includes private garden estates, sloping lawns and abundant landscaping. Irrigation of the park grounds may contribute to groundwater recharge and selenium mobilization in the area. Two fountains and two artificial streams on the grounds constantly recycle water so there is no infiltration from those systems (Cathy Wadsworth, office manager, Pacific View Memorial Park, personal communication, May 19, 2008). Residential and Commercial Landscape Irrigation Approximately 96% of the Big Canyon watershed has been developed for urban use with homes, schools, and commercial operations. Much of the urban area is heavily landscaped and irrigated providing another source of infiltrating water to the watershed; however, the magnitude of the contribution of this source to surface and groundwater flow in Big Canyon Wash is not known. Shallow Groundwater Upstream of Big Canyon Creek Nature Park A perched shallow water table underlies the site of the old Ford Aeronutronic property located north of Ford Road, between Jamboree Road and MacArthur Boulevard (Geomatrix, 2008). A groundwater divide bisects the site and in the southern portion of the site, groundwater flows almost due west to the northwestern quadrant of the golf course. Groundwater likely surfaces somewhere either on the golf course or just on the west side of Jamboree Road in the Nature Park. Water quality samples collected from the monitoring wells at the site have not yet been analyzed for selenium concentrations. There is also a high water table in the Spyglass Hill area beneath the Newport Hills Estates area (the port streets) located upstream of the nature park near the Big Canyon Reservoir (George Murdoch, City of Newport Beach, personal communication, May 15, 2008). The shallow groundwater from this area also likely contributes to the surface and subsurface flows that enter the golf course and ultimately, the nature park. Unidentified Sources There may be other sources of water and groundwater to Big Canyon Wash and the golf course that are not readily identifiable. The source investigation should determine if all potential sources of selenium and their relative contributions to selenium loads in the canyon have been identified. Proposed Scope of Work A combination of sampling water, algae, and biota in Big Canyon Wash and flow estimates throughout the Big Canyon watershed will be conducted to evaluate the potential sources and loads of pollutants entering the drainage. Water samples (Se speciation) will be collected from the Big Canyon Wash freshwater pond outlet, mid -pond, inlet, and below Jamboree Road. In addition, algae, benthic and water column invertebrates, fish, and bird eggs will be collected from the pond for total selenium analysis. These samples will be compared to the results of the 2008 sampling effort and bird eggs will be compared to concentrations found in other parts of the Newport Bay watershed. Bird eggs will be opened and embryos evaluated for effects characteristic of selenium toxicosis before sending them to the laboratory for chemical analyses. Since it appears that the golf course ponds may play an important role in the conversion of selenate to the more bioavailable selenite before the surface flows enter the nature park, the selenium source tracking investigation should also focus on identifying the following: • Sources of water that may enter the golf course grounds, both as surface flows and subsurface flows (former Ford plant, Spyglass Hill area, tributary drainages to Big Canyon creek); • Surface water flow paths through the golf course to Big Canyon Creek; • Selenium concentrations, selenium species, and flow estimates in surface flows before they enter the golf course; • Selenium concentrations, and selenium species in the creeks and ponds on the golf course; flow estimates where appropriate; • Selenium concentrations, selenium species, and flow estimates in the surface waters that enter the golf course (Big Canyon Wash north, middle, and south branches) and exiting the golf course, under Jamboree Drive. Investigation of Big Canyon Wash Hydrology and Pollutant Sources and Loads The flow regimes in the Big Canyon watershed need to be defined in terms of groundwater contributions or losses (gaining reaches or losing reaches of the creek) in baseflows, and water sources and pollutant transport mechanisms. Storm drains and urban runoff are readily identifiable sources of flow to the drainage, but it is not known whether rising groundwater conditions occur within the nature park, the golf course, or elsewhere in the watershed. In order to determine the groundwater contributions and pollutant sources and loads in the Big Canyon drainage, estimates of flow must be added to water quality sampling. Water quality and selenium analyses have already been conducted on water column samples collected from the nature park in June 2008 by C112M HILL. However, sampling of the creeks and ponds on the golf course has not yet been conducted and the flows in the creek in the nature park and the golf course have not yet been measured to determine dry season baseflow conditions. Sample Collection and Analysis Samples must be collected and processed in accordance with Surface Water Ambient Water Monitoring Program (SWAMP) protocols. Analytical laboratory results must be reported in SWAMP database format. Original analytical laboratory reports, including quality assurance /quality control reports and chain -of- custody documents, should also be submitted in electronic format as Adobe Acrobat pdf files. Field observations should include the presence or absence of algae or water plants, riparian vegetation along creek areas, benthic and water column invertebrates (e.g., chironomid larvae [blood worms], dragonfly or mayfly larvae, waterboatmen [corixids], or crayfish), amphibians (frogs or turtles), fish, and birds. Any groundwater seeps or springs should also be identified. Sample sites and stream transects /gauging stations should be located using GPS coordinates. The water quality samples should be collected from the locations shown on Figure 2 (up to 21 samples if there is water at all the sample sites) plus the three samples from the lower Nature Park pond and should be analyzed for the listed groups of constituents (Table 3). In addition, three samples will be collected for water column particulate selenium from three of the water quality sampling sites (locations to be determined, based on obvious availability of particulates in the water at the time of sampling). The particulate fraction samples and all dissolved fraction samples will be filtered in the laboratory within 24 hours of sample collection. Algae, benthic and water column invertebrates, fish, and bird eggs will be collected from the Nature Park pond in the lower canyon, as available. It is anticipated that three to five samples may be collected from each of these four main tissue types (12 to 20 biota samples, total). Table 4 provides the individual parameters for each group of constituents for water and tissue. Table 3. Water Q ality Samples and Flow Estimates by Location SAMPLE LOCATION SAMPLES Flow Estimate Tissue Total . Selenium . Water Quality Parameters Selenium Species INFLOW 1 1 1 1 1 INFLOW 2 1 1 1 1 INFLOW 3 1 1 1 1 INFLOW 4 1 1 1 1 INFLOW 5 1 1 1 1 INFLOW 11 1 1 1 1 INFLOW 15 1 1 1 1 OUTFLOW 1 1 1 1 LAKE 1 1 1 1 LAKE 3 1 1 1 LAKE 4 1 1 1 LAKE 5 1 1 1 LAKE 6 1 1 1 RIPARIAN 1 1 1 1 1 RIPARIAN 2 1 1 1 1 RIPARIAN 3 1 1 1 1 Golf Course Irrigation Water 1 1 1 Lower Nature Park Pond 3 20 3 3 QA/QC Duplicates 1 1 1 Total Samples 21 1 11 1 20 21 21 The following Table 4 lists the recommended analytical parameters for the water column and biota tissue samples and Table 5 lists the analytical methods and detection limits: Table 4. Analytical Parameters Water Column Samples Tissue Samples Water Quality Parameters Total Recoverable Se Total Dissolved Selenium Total Selenium Total Recoverable Selenium ICP -MS w /DRC Particulate fraction selenium (groundwater samples) Trace Metals (Cd, Cu, Cr, Ni, Pb, Zn) Trace Metals (Cd, Cu, Cr, Ni, Pb, Zn) Hardness (as CaCO3) HPLC - ICP -MS w /DRC Total Dissolved Solids SeVI Total Suspended Solids Percent ( %) Solids Dissolved Oxygen Dissolved Organic Carbon Organic Se pH <0.1 µg /L Temperature Selenium species NA Selenate Selenite Methylselenitic acid Selenomethionine Selenoc anite Table 5. Recommended Analytical Methods and Detection Limits for Selenium in Water Constituent Analytical Method Method Detection Limit Total Recoverable Se ICP -MS w /DRC* <0.5 /L Dissolved Se ICP -MS w /DRC <0.5 pg /L (groundwater samples) Selenium Species: HPLC - ICP -MS w /DRC SeVI <0.1 gg /L SeIV <0.1 Ng /L Organic Se <0.1 µg /L Selenomethionine Selenocyanate Methyl selenic acid * Dynamic Reaction Cell (DRC)- lowers detection limits and eliminates matrix interferences ICP -MS w /DRC: Inductively Coupled Plasma Mass Spectrometry with Dynamic Reaction Cell HPLC - ICP -MS w /DRC: High Performance Liquid Chromatography - Inductively Coupled Plasma- Mass Spectrometry with Dynamic Reaction Cell Stream Flow estimates Ten locations are currently proposed for flow estimates for the area from the eastern end of the Big Canyon golf course to just downstream of Back Bay Drive at the western end of Big Canyon Creek Nature Park. Flow estimates will be conducted at the time of surface water quality sample collection. Flow will be estimated by measuring average depth, cross - section width, and velocity (using standard hand- held field velocity meter). Reporting It is estimated that the sample collection, and analysis and reporting for the Big Canyon Wash selenium source - tracking program will take three months to complete. Estimated Sampling, Analytical, and Reporting Costs The proposed scope of work is based on existing information and CH2M HILL staff's professional best judgment. Actual conditions in the field may differ and require adjustments to the number and type of samples and sample locations. The actual number of stream flow estimates and biota samples and their locations will be determined in the field and should be based on existing stream flow conditions and biota availability. Therefore, all costs should be considered preliminary and subject to change based on the actual number of samples collected, field conditions, consultant fees, and laboratory rates for the recommended analyses. The following tasks and costs have been estimated: Table 6. Tasks and Estimated Costs Task No, of Samples (if applicable) Estimated Cost Se Monitoring and Initial Source Tracking Project Administration (including 1 site meeting for 2 staff, and 1 teleconference) $ 9,192 Sample Collection $ 24,894 Laboratory Analysis - Water Quality 21 $ 5,250 Laboratory Analysis - Selenium Species 21 $ 4,515 Laboratory Analysis- Particulate Fraction Selenium 3 $ 480 Laboratory Analysis - biota 20 $ 6,100 Total Laboratory Analyses $ 16,345 Subcontractor overhead charge: 10% $ 1,635 Embryo Analysis 5 $ 1,584 Sample Preparation and Pick -up $ 1,660 Sample Pick -up $ 100 Reporting $ 22,458 SUBTOTAL $77,868 10 References Byron, E. and G. Santolo, 2008, Big Canyon Wash Wetlands Restoration, Baseline Selenium Results, draft report dated July 25, 2008, prepared by CH2MHi11 for the City of Newport Beach and the Santa Ana Regional Water Quality Control Board. Presser, T., D. Piper, K. Bird, J. Skorupa, S. Hamilton, S. Detwiler and M. Huebner, 2004, The Phosphoria Formation: A Model for Forecasting Global Selenium Sources in the Environment. In J. Hein, ed., Life Cycle of the Phosphoria Formation: From Deposition to the Post - Mining Environment. Elsevier Publications. Sutula, M., J. Brown, and E. Fetscher, 2008, Habitat Value of Urban Wetlands, final report dated March 5, 2008, prepared by the Southern California Coastal Water Research Project for the Los Angeles Regional Water Quality Control Board, Grant Agreement No. 04- 090 - 554 -0. Weston Solutions, Inc., 2007, Big Canyon Creek Flow and Water Quality Assessment. Report prepared for WRC Consulting Services, Inc. Weston Solutions, Inc., 2008, Big Canyon wet weather results unpublished data. City of Newport Beach NO. BA- 09BA -051 BUDGET AMENDMENT 2008 -09 AMOUNT: $s1,7s1.00 EFFECT ON BUDGETARY FUND BALANCE: X Increase Revenue Estimates Increase in Budgetary Fund Balance X Increase Expenditure Appropriations AND X Decrease in Budgetary Fund Balance X Transfer Budget Appropriations I No effect on Budgetary Fund Balance SOURCE: X from existing budget appropriations X from additional estimated revenues from unappropriated fund balance EXPLANATION: This budget amendment is requested to provide for the following: To transfer expenditure appropriations from the Irrigation Smart Controller Program to the Big Canyon Creek Restoration Project and to increase revenue estimates and expenditure appropriations due to a contribution from the Orange County Nitrogen Selenium Management Program for the Big Canyon Creek Restoration Project. ACCOUNTING ENTRY: BUDGETARY FUND BALANCE Fund Account REVENUE ESTIMATES (3601) Fund/Division Account 250 4889 EXPENDITURE APPROPRIATIONS (3603) Description Description Contributions - Governmental Award Signed: Signed: Signed: Approval: Administrative Services Director Administrative Approval: City Manager City Council Approval: City Clerk Amount Debit Credit F $40,000.00 $41,761.00 Automatic System Entry. $40,000.00 $41,761.00 �Z7J Date Date Date Description Division Number 7251 Contributions - Capital Account Number CS100709 Big Canyon Creek Restoration Division Number 7014 General Fund - Misc Capital Account Number C5100969 Irrigation Smart Controller Program Division Number 7014 General Fund - Misc Capital Account Number C5100709 Big Canyon Creek Restoration Signed: Signed: Signed: Approval: Administrative Services Director Administrative Approval: City Manager City Council Approval: City Clerk Amount Debit Credit F $40,000.00 $41,761.00 Automatic System Entry. $40,000.00 $41,761.00 �Z7J Date Date Date