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HomeMy WebLinkAboutMLA08-00509 SEPA Jefferson County Department of Public Works 623 Sheridan St. { ; f` Port Townsend, WA 98368 r. (360)385-9160 Frank Gifford, Public Works Director Monte Reinders, P.E., County Engineer MEMORANDUM R E C E I VET) TO: Michelle Farfan 1 L' Department of Community Developmen , FROM: James W. Pearson, Project Manage e JEFFEOSON COUNTY OCU DATE: October 30, 2009 RE: SUB09-00038 Tala Point Planned Rural Residential Development; Olympic Property Group, applicant STATE ENVIRONMENTAL POLICY ACT REVIEW After review of the environmental checklist and other documents submitted with the referenced proposal, the Public Works Department has the following comments. Environmental Checklist Section 1 Earth. Unified Development Code Requirements The Jefferson County Unified Development Code, JCC 18.30.070 Stormwater Management Standards adopts the standards and minimum requirements of the Washington Department of Ecology Stormwater Management Manual for Western Washington. Public Works Department Findings The proposal would require significant clearing, grading, and excavation to develop roads, utilities, and home sites. Most of this development would occur on level and moderately sloping areas of the site. The proponent submitted a Geotechnical Pre-design Evaluation (December 11, 2008) prepared by ZZA-Terracon. The evaluation characterizes soil and subsurface conditions on and adjacent to the site and identifies areas characterized by seismic, erosion, and landslide hazards. It recommends that site development avoid these areas. The report also makes recommendations regarding stormwater management, earthwork, and roadway, utility, and residential construction. The evaluation recommends that additional geotechnical evaluations should be conducted to provide specific recommendations regarding site development after preliminary plat approval. Olympic Property Group,Tala Point PRRD Public Works Department Comments The proponent also submitted a preliminary stormwater site plan report(December 19, 2008) prepared by D.R. Strong Consulting Engineers. The report discusses stormwater management issues related to the development, including construction stormwater pollution prevention. Land disturbing activity and creation of new impervious surface would be subject to the County's stormwater management requirements that implement the standards from the Washington Department of Ecology Stormwater Management Manual for Western Washington. A NPDES Construction General Stormwater Permit is required. As a requirement of this permit, a Certified Professional in Erosion and Sediment Control will be required to conduct inspections and monitor runoff. Prior to initiating land disturbing activities,the proponent will submit a stormwater site plan that includes a construction stormwater pollution prevention plan to the Department for review. Based on the proposed site design and implementing the County's stormwater management requirements,the requirements of the NPDES Construction General Stormwater Permit, and the recommendations of the geotechnical evaluation, the Department recommends finding that the proposal is not likely to result in significant adverse impacts related to seismic, erosion, and landslide hazards. In order to ensure this, the following preliminary plat condition should be required: • Prior to commencing land disturbing activity, the project engineer shall certify that the plans for clearing, grading, and construction of roads, utilities, and stormwater management facilities conform to the recommendations of the Geotechnical Pre-design Evaluation (December 11, 2008)prepared by ZZA-Terracon and any subsequent geotechnical evaluations prepared for the project. Environmental Checklist Section 3 Water See comments above under Earth. The proposal would designate 66% of the site as open space. Most of the open space would remain forested. Approximately 7% of the site would be covered with impervious surfaces. Most of the stormwater runoff generated by the development would be dispersed into areas of native vegetation using Best Management Practices from the Stormwater Management Manual. Developments that conform to these characteristics typically maintain existing hydrology and have minimal impacts related to stormwater runoff. Runoff from a portion of the site would be collected, treated in a biofiltration swale, and conveyed in a storm drainage system to Port Ludlow Bay. Public Works Department Findings Based on the proposed site design and implementing the County'sg stormwater management p requirements,the requirements of the NPDES Construction General Stormwater Permit, and the recommendations of the geotechnical evaluation, the Department recommends finding that the proposal is not likely to result in significant adverse impacts related to existing site hydrology and stormwater runoff. Olympic Property Group,Tala Point PRRD 2 Public Works Department comments Environmental Checklist Section 14 Transportation Unified Development Code Requirements The Jefferson County Unified Development Code JCC 18.30.020(5)requires all developments to be served by appropriate transportation facilities. The Jefferson County Unified Development Code JCC 18.30.080(1)(a) requires roads serving developments to be designed and constructed to comply with the adopted standards of the Jefferson County Public Works Department, including the American Association of State Highway and Transportation Officials (AASHTO)Policy on Geometric Design of Highways and Streets. Public Works Department Findings The proponent submitted a Traffic Impact Assessment(December 2008)prepared by Geralyn Reinhart, PE. The Public Works Department reviewed the Assessment and requested that it be supplemented by additional information. An Addendum prepared by Ms. Reinart and dated October 8, 2009 was reviewed by the Department. The Assessment and Addendum note the following: • The proposal would generate approximately 517 weekday trips and 55 peak hour trips on to Paradise Bay Road. • Approximately 85% of the traffic generated by the proposal would travel on the segment of Paradise Bay Road west of the site and 15%would travel on the segment to the east. Approximately 65%of the total traffic would travel west on Paradise Bay Road towards Oak Bay Road and 20%would travel south on Teal Lake Road. • Paradise Bay Road capacity would remain at or above LOS C. • The Paradise Bay Road intersections with Teal Lake Road and Oak Bay Road would continue to operate at LOS C or better. The traffic assessment provides accident data for Paradise Bay Road segments. The segment from Mile Post 2.00 to Mile Post 2.58 at E. Ludlow Ridge Road has had a significantly higher accident rate than the other road segments. It would have the greatest increase in traffic volume generated by the proposal. This segment is characterized by steep grades and horizontal and vertical curves. While the initial causes of the accidents varied (e.g., inattentive drivers, animal encounters, ice), they resulted(with one exception) in vehicles leaving the roadway, rather than collisions with other vehicles. The Department was aware of this accident history and recently widened the shoulders from the Teal Lake Road intersection to +1- Mile Post 2.23. Improvements to the segment of Paradise Bay Road from Ludlow Creek to the Teal Lake Road intersection are programmed in the County's 6-Year Transportation Improvement Program. The traffic assessment notes that the proposed access from Paradise Bay Road to the 8-lot cluster on the southwest of the site lacks adequate sight distance to the west. The assessment suggests several options for addressing this issue. The proposed access requires a road approach permit from the Department. The Department will review the road approach permit application and condition the permit to ensure that adequate sight distance is provided. Based on this analysis the Department recommends finding that the proposal is not likely to result in significant adverse impacts related to County Roads. Olympic Property Group,Tala Point PRRD 3 Public Works Department comments APPLICATION REVIEW After review of the proposed subdivision, the Department has the following comments and recommendations based on the standards of the Unified Development Code. A. TRANSPORTATION 1. Rights-of-way/Easements Unified Development Code Requirements The Jefferson County Unified Development Code JCC 18.30.080(1)(h) requires subdivisions to provide access to the public road system at two locations, when feasible. A single access may be allowed provided that the public health, safety, and welfare are protected. The Jefferson County Unified Development Code JCC 18.30.080(1)(1) requires dedication of a right-of-way 30 feet in width from the centerline of public roads, if such a right-of-way has not been previously dedicated. The Jefferson County Unified Development Code JCC 18.30.080(1)(m) requires dedication of 60 feet wide private road easements, but allows a reduced width on recommendation from the Public Works Department. Public Works Department Findings Paradise Bay Road has adequate right-of-way for the existing roadway. Sixty feet wide easements are proposed to be dedicated for the private access roads. Fifty-two lots would be accessed from Paradise Bay Road. Forty-four of these lots would be accessed by existing E. Ludlow Ridge Road that intersects Paradise Bay Road at Mile Post 2.58. This intersection would be moved approximately 260' to the southeast to improve alignment and sight distance. Fourteen lots would be accessed directly from E. Ludlow Ridge Road. Thirty lots would be accessed from a secondary road that would loop off of E. Ludlow Ridge Road to the west. The northerly connection of this road to E. Ludlow Ridge Road would be gated and for emergency access only. Eight lots in the southwest portion of the site would be accessed from Paradise Bay Road by a new private road located at approximately Mile Post 2.3. This road would be gated past the 8th lot. In order to ensure good circulation and emergency access to the 8-lot cluster, the access road should have a turnaround at its terminus. Roadway improvements may be required in order to provide adequate sight distance for this access on to Paradise Bay Road. Depending on the type of improvements, additional right-of- way for Paradise Bay Road may be required. An existing forest management road on an easement across property managed by the Washington State Department of Natural Resources would provide an emergency connection between the eight southwest lots and E. Ludlow Ridge Road. This would also provide two accesses to Paradise Bay Road for the 52 lots in the main portion of the development. The easement for this road should be depicted on the final plat. Olympic Property Group,Tala Point PRRD 4 Public Works Department comments Two lots adjoining the shoreline would be accessed by a+/-1,000' long private extension of Ludlow Bay Road. Due to their location and the topography, it is not feasible to provide a second access to these lots from the public road system. In order to ensure good circulation and emergency access,the access road should have adequate width and a turnaround at its terminus. Public Works Department Recommended Preliminary Plat Conditions • Private road easements for all the access roads shall be dedicated on the final plat. • The proponent shall dedicate additional right-of-way for Paradise Bay Road to Jefferson County in fee simple if necessary to construct roadway improvements to provide adequate sight distance for the access to the 8-lot cluster on the southwest portion of the site. • The easement for the emergency access road from E. Ludlow Ridge Road across the Washington Department of Natural Resources property to the 8-lot cluster on the southwest portion of the site shall be depicted on the final plat. • All easements of record shall be shown on the final plat with the Auditor's File Number also referenced on the plat. 2. Road Design and Construction Unified Development Code Requirements The Jefferson County Unified Development Code JCC 18.30.080(1)(a)requires roads serving developments to be designed and constructed to comply with the adopted standards of the Jefferson County Public Works Department, including the American Association of State Highway and Transportation Officials (AASHTO) Policy on Geometric Design of Highways and Streets and the Washington Department of Transportation Design Manual and Standard Specifications. The Jefferson County Unified Development Code JCC 18.30.080(2) Public Roads (a)(iv)(C) states road access points shall have clear and unobstructed sight distance in both directions adequate to ensure public safety. Appropriate site distances shall be determined by the County Engineer, based on speed limit, roadway surface, and other pertinent factors. Public Works Department Findings E. Ludlow Ridge Road would serve 44 proposed lots and 15 existing lots to the north at Tala Point. It would have a traffic volume of approximately 595 Average Daily Trips (ADT) at its intersection with Paradise Bay Road. The preliminary plans show that E. Ludlow Ridge Road would be improved from Paradise Bay Road to the southerly intersection with the loop road to meet the Department's standard for a Local Access Road with more than 400 ADT: A 20' wide traveled way with 5' wide shoulders. The minimum structural section would be 6"compacted gravel base over compacted subgrade and 2" compacted crushed surfacing top course. The proposed road would be adequate to accommodate the anticipated traffic and provide adequate fire and emergency vehicle access. The loop road off of E. Ludlow Ridge Road would serve 30 proposed lots. It would have a traffic volume of approximately 290 ADT. The road serving the 8-lot cluster in the southwest of the site would have a traffic volume of approximately 80 ADT. The preliminary plans show that these roads would be constructed to meet the Department's standard for a Local Access Road with less than 400 ADT: An 18' wide traveled way with 2' wide shoulders. The minimum structural section would be 6" compacted gravel base over compacted subgrade and 2"compacted crushed surfacing top course. Both roads would have a hammerhead turnaround at their termini. The Olympic Property Group,Tala Point PRRD 5 Public Works Department comments proposed roads would be adequate to accommodate the anticipated traffic and provide adequate fire and emergency vehicle access. The 2 lots adjoining the shoreline would be accessed by a+/-1,000' private extension of Ludlow Bay Road. It could also serve 4 additional residences on the adjacent lots. It would have a traffic volume of less than 100 ADT. The preliminary plans show that this road would be constructed to meet the Department's minimum standard for a Local Service Road: A 20' unobstructed, traversable width and a 12' wide traveled way. The minimum structural section would be 6" compacted gravel base over compacted subgrade and 2" compacted crushed surfacing top course. There would be a hammerhead turnaround near the terminus. As an alternative,the access road could be constructed with a 12' wide traveled way and intervisible turnouts. The turnouts should be 10'wide by 50' long with 25' long tapers at each end to conform to the American Association of State Highway and Transportation Officials (AASHTO) Policy on Geometric Design of Highways and Streets (2004), Exhibit 5-17 Turnout Design, page 412 or they should be acceptable to the Fire District. Either road section design would be adequate to accommodate the anticipated traffic and provide adequate fire and emergency vehicle access. The E. Ludlow Ridge Road intersection with Paradise Bay Road would be moved approximately 260' to the southeast to improve road alignment and sight distance. The new intersection would require construction of a+/-20' deep fill partially within the County Road right-of-way. This would require a road approach permit from Jefferson County. The permit application should include plans and specifications prepared by a licensed engineer. The work may require a traffic control plan that complies with the Manual on Uniform Traffic Control Devices. The preliminary plan shows a 100' long x 12" diameter approach culvert. The culvert could be blocked by debris creating a hazard for downstream properties and for Paradise Bay Road and Tala Shore Drive. The culvert should be an 18" diameter. The traffic assessment notes that the proposed access to the 8-lot cluster in the southwest of the site lacks adequate sight distance to the west. The design speed for Paradise Bay Road is 50 MPH. The minimum stopping sight distance would be 425'. However,providing only stopping sight distance could require traffic on Paradise Bay Road to slow significantly for entering traffic and could create unsafe traffic conditions. Providing intersection sight distance of 555' would be optimal. The traffic assessment identifies options for achieving adequate sight distance, including cutting down the road grade and providing an entering left-turn lane/exiting left-turn refuge on Paradise Bay Road. Other alternatives would be to provide access to these lots from E. Ludlow Ridge Road or develop the lots elsewhere on the site. Access to the 8-lot cluster requires a road approach permit from the Department. The permit application should include plans and specifications prepared by a licensed engineer that show how adequate sight distance can be provided. The goal should be to provide intersection sight distance, 555'. If a lesser distance is proposed,the application should include an assessment of traffic safety and proposed signing and other measures that will reasonably ensure traffic safety. The work may require a traffic control plan that complies with the Manual on Uniform Traffic Control Devices. The Department would condition the road approach permit to ensure that adequate sight distance is provided. It may be necessary for the proponent to provide additional right-of-way as necessary to accommodate construction and maintenance of the improvements. Olympic Property Group,Tala Point PRRD 6 Public Works Department comments The proposal includes an emergency access road across adjoining property managed by the Washington Department of Natural Resources that would connect the 8-lot southwest cluster with.E. Ludlow Ridge Road. The road would be approximately 1,600' long. The road should meet the Department's minimum standard for a Local Service Road: A 20' unobstructed, traversable width and a 12' wide traveled way. The minimum structural section should be 6" compacted gravel base over compacted subgrade and 2" compacted crushed surfacing top course. As an alternative,the access road could be constructed with a 12' wide traveled way and intervisible turnouts. The turnouts should be 10'wide by 50' long with 25' long tapers at each end to conform to the American Association of State Highway and Transportation Officials (AASHTO)Policy on Geometric Design of Highways and Streets (2004), Exhibit 5-17 Turnout Design, page 412 or they should be acceptable to the Fire District. Public Works Department Recommended Preliminary Plat Conditions • Roads serving the development shall be designed and constructed to comply with the adopted standards of the Jefferson County Public Works Department, including the American Association of State Highway and Transportation Officials (AASHTO) Policy on Geometric Design of Highways and Streets and the Washington Department of Transportation Design Manual and Standard Specifications.. • The initial +1-3,200' of E. Ludlow Ridge Road from Paradise Bay Road to the loop road intersection shall be improved to meet the standard for a Local Access Road with more than 400 ADT: A 20' wide traveled way with 5' wide shoulders. The minimum structural section shall be 6" compacted gravel base over compacted subgrade and 2" compacted crushed surfacing top course. • The loop road off of E. Ludlow Ridge Road and the road serving the 8-lot cluster in the southwest of the site shall be constructed to meet the standard for a Local Access Road with less than 400 ADT: An 18' wide traveled way with 2' wide shoulders. The minimum structural section shall be 6" compacted gravel base over compacted subgrade and 2" compacted crushed surfacing top course. Both roads shall have a hammerhead turnaround at their termini. • The road serving the 2 lots adjoining the shoreline shall be constructed to meet the standard for a Local Service Road: A 20' unobstructed,traversable width and a 12' wide traveled way. The minimum structural section shall be 6" compacted gravel base over compacted subgrade and 2" compacted crushed surfacing top course. As an alternative, the road could be constructed with a 12' wide traveled way and intervisible turnouts. The turnouts shall be 10'wide by 50' long with 25' long tapers at each end to conform to the American Association of State Highway and Transportation Officials (AASHTO) Policy on Geometric Design of Highways and Streets (2004), Exhibit 5-17 Turnout Design, page 412 or they shall be acceptable to the Fire District. There shall be a hammerhead turnaround at or near the terminus. • The road approach permit application for realigning the E. Ludlow Ridge Road intersection with Paradise Bay Road shall include plans and specifications prepared by a licensed engineer. A traffic control plan that complies with the Manual on Uniform Traffic Control Devices may be required. The approach culvert shall be an 18" diameter. • The road approach permit application for the access road serving the 8-lot cluster in the southwest of the site shall include plans and specifications prepared by a licensed engineer. The goal shall be to provide intersection sight distance, 555'. If a lesser distance is proposed, the engineer shall provide an assessment of traffic safety and proposed signing and other measures that will reasonably ensure traffic safety for review by the County Engineer. If Olympic Property Group,Tala Point PRRD 7 Public Works Department comments revisions to Paradise Bay Road are proposed, the plans shall include a traffic control plan that complies with the Manual on Uniform Traffic Control Devices. Improvements to Paradise Bay Road shall be conducted under the supervision of a licensed engineer. Prior to acceptance by the County, the project engineer shall certify that the work has been completed as per the plans and specifications. The proponent shall provide additional right-of-way as necessary to accommodate construction and maintenance of the improvements. • The emergency access road connecting the 8-lot southwest cluster with E. Ludlow Ridge Road shall meet the minimum standard for a Local Service Road: A 20' unobstructed, traversable width and a 12' wide traveled way. The minimum structural section shall be 6" compacted gravel base over compacted subgrade and 2" compacted crushed surfacing top course. As an alternative, this road may be constructed with a 12' wide traveled way and intervisible turnouts. The turnouts should be 10'wide by 50' long with 25' long tapers at each end to conform to the American Association of State Highway and Transportation Officials (AASHTO) Policy on Geometric Design of Highways and Streets (2004), Exhibit 5-17 Turnout Design, page 412 or they should be acceptable to the Fire District. • Prior to final plat approval, the project engineer shall certify that the private roads serving the project have been constructed as per the plans and specifications. B. DRAINAGE,EROSION CONTROL AND STORM WATER MANAGEMENT Unified Development Code Requirements The Jefferson County Unified Development Code JCC 18.30.060 Grading and 18.30.070 Stormwater Management Standards set standards for erosion control and stormwater management. The Code adopts the requirements of the Washington Department of Ecology Stormwater Management Manual for Western Washington. The standards are based on the areas of land disturbing activity and impervious surface. Public Works Department Findings There would be significant land disturbing activity and construction of impervious surfaces for road improvements and site development. Prior to commencing land disturbing activity,the proponent should submit a Stormwater Site Plan that meets the requirements of the Washington Department of Ecology Stormwater Management Manual for Western Washington to the Department for review. The proponent should implement appropriate stormwater management practices during the development of the plat. The proposal includes dedication of approximately 66% of the site as open space. Most of the open space area would be retained in native vegetation. Stormwater runoff from roads, driveways, and structures would be dispersed to these areas. In order for dispersion to be effective, site design and development should comply with the standards of the Stormwater Management Manual. The areas of native vegetation receiving dispersed stormwater runoff should be permanently restricted from development. The proposal also includes development of facilities to collect, treat, and convey stormwater runoff and discharge it to Port Ludlow Bay. The proposal would disturb more than one acre of land. The proponent is required to obtain a National Pollutant Discharge Elimination Systems (NPDES) Construction Stormwater Permit from the Washington Department of Ecology. Olympic Property Group,Tala Point PRRD 8 Public Works Department comments The proposal includes construction of stormwater management facilities that will require on- going maintenance. In order to ensure that the approved stormwater management facilities are appropriately maintained for the life of the project,the proponent should enter into a Stormwater Management Facility Maintenance Agreement with Jefferson County. Public Works Department Recommended Preliminary Plat Conditions: • Prior to commencing land disturbing activity, the proponent shall submit a Stormwater Site Plan that meets the requirements of the Washington State Department of Ecology Stormwater Management Manual for Western Washington to the Public Works Department for review. The Stormwater Site Plan shall discuss proposed measures to permanently restrict development of the areas that would receive dispersed stormwater runoff • The proponent shall implement the stormwater management Best Management Practices identified in the Stormwater Site Plan during development. • Dispersion of runoff from roads, driveways, and structures shall conform to the Best Management Practices in the Washington State Department of Ecology Stormwater Management Manual for Western Washington, Volume V, Chapter 5 On-site Stormwater Management. The Stormwater Site Plan shall include a typical detail for a dispersion trench or level spreader. • The proponent shall provide a copy of the NPDES Construction Stormwater Permit for the project to the Public Works Department. • The plat open space dedication shall prohibit land disturbing activities and development that are incompatible with the function of dispersing stormwater runoff • Prior to final project approval,the project engineer shall certify to the Public Works Department that the site has been developed and stormwater management facilities have been constructed as per the Stormwater Site Plan and the project plans. • Prior to final project approval, the proponent shall enter into a Stormwater Management Facility Maintenance Agreement with Jefferson County. C. GENERAL COMMENTS 1. Plan Review The applicant shall submit plans for land disturbing activities and construction of roads, driveways, utilities, and stormwater facilities to the Public Work Department for review prior to initiating land disturbing activities. 2. Inspections The proponent shall request inspections by the Public Works Department during development. Typically the following inspections are required: • Installation of temporary erosion and sediment control measures, • Clearing and road subgrade preparation, • Construction of storm water management facilities, • Application of gravel base, • Application of crushed surfacing top course, • Paving, and • Final review and approval. Additional inspections may be necessary based on site specific conditions or the nature of the project. Olympic Property Group,Tala Point PRRD 9 Public Works Department comments 3. Road Maintenance Agreement Unified Development Code Requirements The Jefferson County Unified Development Code JCC 18.30.080(1)(p) requires that subdivisions establish an agreement for the continuing maintenance of private roads. Public Works Department Recommended Preliminary Plat Conditions: • The proponent shall establish an agreement for the continued maintenance of the plat access roads and the emergency access road across the Washington Department of Natural Resources property by recording a Road Maintenance Agreement with the Jefferson County Auditor and referencing the Agreement on the final plat. Prior to final plat approval, the proponent shall submit the Agreement to the Public Works Department for review. 4.Addresses and Road Names Unified Development Code Requirements Jefferson County Code JCC 12.20 Emergency Locator System regulates addressing and road naming. Addresses are assigned based on the distance from the road origin. Roads shall be named when the sixth address is applied for on an unnamed road. Proposed road names are reviewed by the Road Naming Committee. The County Code is proposed to be revised in early 2010 so that the application for a fourth address will trigger road naming. Public Works Department Findings The origin and therefore the length of East Ludlow Ridge Road will change when its intersection with Paradise Bay Road is relocated. This may require reassigning addresses to reflect the new distance from the road origin. This determination would be made by JEFFCOM and/or Port Ludlow Fire and Rescue. The road providing access to the 8-lot cluster on the southwest portion should be named through the platting process. There are four existing lots on Ludlow Bay Road that are past the end of the County Road. Three have addresses based on the mile post of the end of the County Road. The proposal includes creating 2 additional lots. Address applications on the fourth lot and/or the proposed two additional lots may require the road to be named. This may also require reassigning addresses to reflect the distance from the road origin. This determination would be made by JEFFCOM and/or Port Ludlow Fire and Rescue. Public Works Department Recommended Preliminary Plat Conditions: • The loop road off of E. Ludlow Ridge Road and the road serving the 8-lot cluster in the southwest of the site shall be named through the platting process. The proponent shall submit proposed road names to the Public Works Department for review by the Road Naming Committee. • Approved road names shall be shown on the final plat. 5. Easements All easements of record shall be shown on the final plat with the Auditor's File Number(AFN) of the easement(s) also referenced on the final plat. Olympic Property Group,Tala Point PRRD 10 Public Works Department comments 6. Surety The Jefferson County Unified Development Code JCC 18.30.080(1)(s)authorizes the proponent to enter into a surety agreement with the Public Works Department prior to final plat approval as an alternative to complete installation of required improvements. Surety shall not be accepted for development of water supply facilities, other than distribution facilities. Surety shall be for an amount equal to 200%of the cost required improvements. It shall not exceed a period of one year and must be in a form acceptable to the County Prosecutor. Acceptable forms of surety are available from the Public Works Department. They include bonds,open account agreements, and irrevocable letters of credit. Surety must be accompanied by an estimate of the cost of all improvements prepared by a licensed engineer. The estimate shall be approved by the Public Works Department prior to acceptance. Olympic Property Group,Tala Point PRRD 11 Public Works Department comments