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An annual service charge schedule is hereby established for the unincorporated areas of the County.

A. The service charge to be applied to each drainage basin within the County is specified in Table 11.02.050-1:

Table 11.02.050-1. Rate Structure 

Parcel Classification

Effective 01/01/2020 – 12/31/2020

Residential and Equivalent

$134.71

Duplex and Equivalent

$173.80

Duplex Condo and Equivalent; Mobile Home Park Condo

$86.90

Multifamily:

Minimum Charge

$134.71

Impervious (excluding gravel) per square foot

$0.05103

Gravel per square foot

$0.03827

Mobile Home Park and Equivalent:

Minimum Charge

$74.34

Impervious (excluding gravel) per square foot

$0.05103

Gravel per square foot

$0.03827

Vacant Undeveloped:

Minimum Charge per parcel

$23.51

Area Charge per acre

$0.47015

Parcel Classification

Effective 01/01/2020 – 12/31/2020

State, County, Federal Highways, and Transportation Infrastructure:

Impervious rate per square foot (excluding gravel)

$0.00765

Gravel per square foot

$0.00574

Agricultural Land Uses

$134.71

All Other Parcels:

Minimum Charge per parcel

$134.71

Impervious (excluding gravel) per square foot

$0.05103

Gravel per square foot

$0.03827

 

Table 11.02.050-1. Rate Structure

Effective 01/01/2021 – 12/31/2021 

Parcel Classification

Base Rate

Base plus Water Quality Services

Base plus River Services

Base plus Water Quality and River Services

Residential and Equivalent

$125.31

$140.64

$143.20

$158.53

Duplex and Equivalent

$161.67

$181.45

$184.76

$204.54

Duplex Condo and Equivalent; Mobile Home Park Condo

$80.83

$90.73

$92.38

$102.27

Multifamily:

Minimum Charge

$125.31

$140.64

$143.20

$158.53

Impervious (excluding gravel) per square foot

$0.04747

$0.05328

$0.05425

$0.06006

Gravel per square foot

$0.03561

$0.03997

$0.04070

$0.04506

Mobile Home Park and Equivalent:

Minimum Charge

$69.15

$77.61

$79.02

$87.48

Impervious (excluding gravel) per square foot

$0.04747

$0.05328

$0.05425

$0.06006

Gravel per square foot

$0.03561

$0.03997

$0.04070

$0.04506

Vacant Undeveloped:

Minimum Charge per parcel

$23.51

$23.51

$23.51

$23.51

Area Charge per acre

$0.47015

$0.47015

$0.04070

$0.47015

Parcel Classification

Base Rate

Base plus Water Quality Services

Base plus River Services

Base plus Water Quality and River Services

State, County, Federal Highways, and Transportation Infrastructure:

Impervious rate per square foot (excluding gravel)

$0.00712

$0.00799

$0.00814

$0.00901

Gravel per square foot

$0.00535

$0.00600

$0.00611

$0.00676

Agricultural Land Uses

$125.31

$140.64

$143.20

$158.53

All Other Parcels:

Minimum Charge per parcel

$125.31

$140.64

$143.20

$158.53

Impervious (excluding gravel) per square foot

$0.04747

$0.05328

$0.05425

$0.06006

Gravel per square foot

$0.03561

$0.03997

$0.04070

$0.04506

 

Table 11.02.050-1. Rate Structure

Effective 01/01/2022 – 12/31/2022 

Parcel Classification

Base Rate

Base plus Water Quality Services

Base plus River Services

Base plus Water Quality and River Services

Residential and Equivalent

$127.45

$142.81

$147.51

$162.87

Duplex and Equivalent

$164.43

$184.25

$190.31

$210.13

Duplex Condo and Equivalent; Mobile Home Park Condo

$82.21

$92.12

$95.16

$105.07

Multifamily:

Minimum Charge

$127.45

$142.81

$147.51

$162.87

Impervious (excluding gravel) per square foot

$0.04828

$0.05410

$0.05588

$0.06170

Gravel per square foot

$0.03622

$0.04059

$0.04192

$0.04629

Mobile Home Park and Equivalent:

Minimum Charge

$70.33

$78.80

$81.40

$89.87

Impervious (excluding gravel) per square foot

$0.04828

$0.05410

$0.05588

$0.06170

Gravel per square foot

$0.03622

$0.04059

$0.04192

$0.04629

Parcel Classification

Base Rate

Base plus Water Quality Services

Base plus River Services

Base plus Water Quality and River Services

Vacant Undeveloped:

Minimum Charge per parcel

$23.51

$23.51

$23.51

$23.51

Area Charge per acre

$0.47015

$0.47015

$0.47015

$0.47015

State, County, Federal Highways, and Transportation Infrastructure:

Impervious rate per square foot (excluding gravel)

$0.00725

$0.00812

$0.00839

$0.00926

Gravel per square foot

$0.00544

$0.00610

$0.00630

$0.00696

Agricultural Land Uses

$127.45

$142.81

$147.51

$162.87

All Other Parcels:

Minimum Charge per parcel

$127.45

$142.81

$147.51

$162.87

Impervious (excluding gravel) per square foot

$0.04828

$0.05410

$0.05588

$0.06170

Gravel per square foot

$0.03622

$0.04059

$0.04192

$0.04629

 

Table 11.02.050-1. Rate Structure

Effective 01/01/2023 

Parcel Classification

Base Rate

Base plus Water Quality Services

Base plus River Services

Base plus Water Quality and River Services

Residential and Equivalent

$129.61

$144.94

$151.81

$167.14

Duplex and Equivalent

$167.22

$187.00

$195.86

$215.64

Duplex Condo and Equivalent; Mobile Home Park Condo

$83.61

$93.51

$97.93

$107.83

Multifamily:

Minimum Charge

$129.61

$144.94

$151.81

$167.14

Impervious (excluding gravel) per square foot

$0.04910

$0.05491

$0.05751

$0.06332

Gravel per square foot

$0.03683

$0.04119

$0.04314

$0.04750

Mobile Home Park and Equivalent:

Minimum Charge

$71.53

$79.99

$83.78

$92.24

Impervious (excluding gravel) per square foot

$0.04910

$0.05491

$0.05751

$0.06332

Gravel per square foot

$0.03683

$0.04119

$0.04314

$0.04750

Parcel Classification

Base Rate

Base plus Water Quality Services

Base plus River Services

Base plus Water Quality and River Services

Vacant Undeveloped:

Minimum Charge per parcel

$23.51

$23.51

$23.51

$23.51

Area Charge per acre

$0.47015

$0.47015

$0.47015

$0.47015

State, County, Federal Highways, and Transportation Infrastructure:

Impervious rate per square foot (excluding gravel)

$0.00737

$0.00824

$0.00863

$0.00950

Gravel per square foot

$0.00553

$0.00618

$0.00648

$0.00713

Agricultural Land Uses

$129.61

$144.94

$151.81

$167.14

All Other Parcels:

Minimum Charge per parcel

$129.61

$144.94

$151.81

$167.14

Impervious (excluding gravel) per square foot

$0.04910

$0.05491

$0.05751

$0.06332

Gravel per square foot

$0.03683

$0.04119

$0.04314

$0.04750

B. Pre-2017 Credit Program. This Section applies to all properties which were qualified as of October 1, 2016, for a credit against the annual service charge set forth in PCC 11.02.050 A., completed all requirements necessary to receive the service charge credit, and are currently approved for the service charge credit. Such properties shall be eligible to continue receiving a service charge credit pursuant to the requirements of this Section until October 1, 2026. To continue qualifying for a service charge credit, the following must be completed before June 1 of the year preceding the year for which the owner is requesting credit.

1. Credit will apply to all categories listed in PCC 11.02.050 A. except for vacant parcels. Vacant parcels included in a Farm Management Plan are eligible for a credit.

2. To qualify for a credit, the Owner of Record shall provide the County engineering calculations in accordance with design criteria acceptable to the County and "As Constructed Plans" stamped and signed by the Owner's Engineer to verify that the drainage system has adequate capacity to meet the design criteria for which the Owner is requesting a credit. The Owner's engineer shall prepare and stamp an operation and maintenance manual for the Owner to follow in maintaining any drainage pond. The County shall be provided a copy of the maintenance manual. New calculations, "As Constructed Plans", and a maintenance and operation manual shall be prepared and stamped by the Owner's engineer if the drainage pond is increased or decreased in size from the original credit request.

3. Annually, each Owner of Record shall provide a certified statement by October 1 of the year preceding the year for which the Owner of Record is requesting credit on a form provided by the County verifying that all specified maintenance has been performed in accordance with the operation and maintenance manual prepared by the Owner's engineer on the facility for the calendar year the credit is being requested. Once every five years, the certified statement shall be stamped and signed by the Owner's Engineer.

4. Each Owner of Record shall provide a "hold harmless" statement on a form provided by the County that indemnifies the County from any loss incurred arising from the construction and maintenance and operation of the Owner's drainage facilities for both water quantity and quality runoff from the owner's property. This statement shall be signed by the Owner and will be recorded with the County Auditor by the Owner of Record. The Owner of Record shall provide the County a copy of the agreement with the County Auditor recording number stamped on it before the application will be deemed completed.

5. Each Owner of Record must enter into an agreement with the County that allows the County to enter onto the Owner's parcel to inspect the drainage facility and verify all information submitted by the owner and his/her Engineer. The agreement form will be provided by the County. This agreement will be recorded with the County Auditor by the Owner of Record. The Owner of Record shall provide the County a copy of the agreement with the County Auditor recording number stamped on it before the credit application will be deemed completed.

6. Credit percentages shall be provided in accordance with the following:

CREDIT PERCENTAGES

Retention Facility

Percent Credit

Detention Facility

Percent Credit

100 Year Storage

85%

100 Year Storage; Release rate of 50% of the predevelopment discharge rate for a 2 year storm

85%

50 Year Storage

40%

50 Year Storage; 2 Year Release

40%

25 Year Storage

20%

25 Year Storage; 2 Year Release

20%

10 Year Storage

10%

10 Year Storage; 2 Year Release

10%

7. Roof rainwater collection systems, which retain stormwater on-site for later non-potable use, will be credited as retention facilities. Systems that are properly sized for their intended use and have a capacity of at least 1,500 gallons per structure will be assigned the same credit as a 10-year Retention Facility. Larger systems capable of retaining the 25-, 50- or 100-year storms will be credited at the higher level as long as the stored water can be utilized within a 24-hour period. Refer to Volume III of the Pierce County Stormwater Management and Site Development Manual for roof rainwater collection systems.

8. In order to determine the credit percentage for a retention/detention facility, the following shall apply:

a. For a retention/detention facility whose year storage is not listed in PCC 11.02.050.B.6, the next lower year storage category will be used.

b. The release rate shall be equal to or less than a two-year release rate for a detention facility with a 10-, 25-, or 50-year storage. The release rate for a detention facility with a 100-year storage shall be equal to or less than 50 percent of the predevelopment discharge rate for a two-year storm.

c. No credit shall be given for a retention/detention facility with less than a 10-year storage.

9. The maximum credit available per parcel shall not exceed $20,000 in 2018, $17,500 in 2019, $15,000 in 2020, $12,500 in 2021 and each year thereafter through the 2027 credit year; except as otherwise provided in PCC 11.02.050.B.10.

10. Parcels receiving a credit in excess of $20,000 in 2017 shall be subject to a maximum credit in subsequent years which shall be reduced by five percent each year through the year 2027. The rate shall be calculated by subtracting the credit percentage adjustment from the 2017 maximum credit rate of 85 percent. For example, a parcel receiving an 85 percent credit in 2017 would receive a maximum credit percentage of 80 percent in 2018, a maximum credit percentage of 75 percent in 2019, a maximum credit percentage of 70 percent in 2020, and so forth through the 2027 credit year. This maximum credit shall be in lieu of the maximum credit established pursuant to PCC 11.02.050.B.9.

Subsection B. shall sunset on January 1, 2027.

C. 2017 Credit Program. To qualify for a service charge credit, the following must be completed before June 1 of the year preceding the year for which the owner is requesting credit:

1. Credit may be applied to all categories listed in PCC 11.02.050 A. except for vacant parcels or any State, County, Federal Highways and Transportation Infrastructure. Newly developed properties must fully complete the development process in accordance with PCC 17A.10.140 before applying for a credit.

2. To qualify for a credit, the Owner of Record shall provide the County the following documentation, each stamped and signed by the Owner's Engineer, that all storm drainage systems serving the entire site are fully compliant with the current requirements for storm water control, both water quantity and water quality, in Title 17A PCC:

a. Engineering calculations; and

b. "As Constructed Plans"; and

c. Maintenance and Operations Manual for all drainage facilities, including applicable source control BMPs.

3. Only systems determined by the County to meet or exceed current NPDES Stormwater Permit requirements for operations, maintenance and source control for the site will continue to receive a credit. The Owner will be notified of any maintenance deficiencies no later than July 1 to allow for corrective action before October 1. Systems that are not adequately maintained by October 1 will be dropped from the credit program and will need to submit a new application for readmission into the program.

4. Each Owner of Record shall provide a "hold harmless" statement on a form provided by the County that indemnifies the County from any loss incurred arising from the construction and maintenance and operation of the Owner's drainage facilities for both water quantity and quality runoff from the owner's property. This statement shall be signed by the Owner and will be recorded with the County Auditor by the Owner of Record. The Owner of Record shall provide the County a copy of the agreement with the County Auditor recording number stamped on it before the application will be deemed completed.

5. Each Owner of Record must provide documentation that the County has legal access to the property for the purpose of inspecting the storm control system. Since 1997, new development has been required to record a maintenance covenant for this purpose and a copy of this document will suffice. If no such documentation is available, the Owner shall enter into an agreement with the County that allows the County to enter onto the Owner's parcel to inspect the drainage facility and verify all information submitted by the owner and his/her Engineer. The agreement form will be provided by the County. This agreement will be recorded with the County Auditor by the Owner of Record. The Owner of Record shall provide the County a copy of the agreement with the County Auditor recording number stamped on it before the credit application will be deemed completed.

6. The maximum credit percentage shall be 30 percent. Partial credit is not allowed.

7. Sites that utilize rainwater harvesting systems, which retain stormwater on-site for later non-potable use, are eligible for a 10 percent credit. To qualify, these systems must be properly sized for their intended use and have a capacity of at least 1,500 gallons per structure. This credit is not additive and is in lieu of the credit set forth in PCC 11.02.050 C.6.

8. Once accepted into the credit program, a system will remain eligible for a credit for a period of five years, even if the requirements in Title 17A PCC change, assuming the system is not modified, continues to function as designed, and is adequately maintained.

D. The annual service charge credit will be calculated by multiplying the annual service charge by the applicable credit percentage when all of the conditions established for a service charge credit have been met.

E. The annual service charge shall be calculated based on impervious area and parcel status as of January 1 each year. The annual service charge shall be due and payable to Pierce County on or before April 30 of each year and shall be paid together with payment of real property tax upon the parcel, if any, and shall be delinquent thereafter. Provided, that if real property tax upon the parcel payable in that year exceeds $30.00, and one-half of the tax, together with one-half of the annual service charge provided by this Section are paid on or before April 30 of such year, the remaining one-half of the annual service charge shall be due and payable on October 30, next following, or at the time of payment of the remaining tax on the parcel, whichever is earlier, and shall be delinquent after that date. The service charge shall be incorporated on the Pierce County Real Property Tax Statement.

F. Parcel characteristics affecting the service charge which are altered after January 1 of any year shall not be the basis for recalculation of the service charge until the next year with the exception that adjustments to the annual service charge may be made when the property is incorporated or annexed by another jurisdiction. In that situation, the service charge for the billing year during which the incorporation or annexation occurs may:

1. Be subject to a proration formula included in an interlocal agreement between the County and the incorporating or annexing jurisdiction; or

2. If the incorporation or annexation agreement does not address the surface water management charge, then incorporated or annexed parcels shall be subject to a service charge of 25 percent of the annual service charge for each quarter of the billing year during which the property was in unincorporated Pierce County for one or more days. For purposes of determining this adjusted service charge, the billing quarters shall be for January 1 through March 31; April 1 through June 30; July 1 through September 30; and October 1 through December 31.

3. Whenever a city or town annexes or incorporates an area and the County has issued revenue bonds, general obligation bonds, or secured funds through other indebtedness to finance storm water control facilities that are payable in whole or in part from rates or charges imposed in the area, the County shall continue imposing all portions of the rates or charges that are allocated to payment of the debt service on the bonds or indebtedness in that area after the effective date of the annexation or official date of the incorporation until:

a. The debt is retired;

b. Any debt that is issued to refinance the underlying debt is retired; or

c. Any debt is repaid to lending institutions, agencies, or parties; or

d. The city or town reimburses the County an amount sufficient to retire that portion of the debt borne by the annexed or incorporated area.

Code reviser’s note: Ordinance No. 2016-72s adopted a Pre-2017 Credits Program to PCC 11.02.050 B., as shown by the italicized language. This Program shall sunset on January 1, 2027.

(Ord. 2019-80s § 1 (part), 2019; Ord. 2017-66 § 1, 2017; Ord. 2017-28s § 1 (part), 2017; Ord. 2016-72s § 1, 2017; Ord. 2015-78 § 1, 2015; Ord. 2014-82 § 1, 2014; Ord. 2014-9 § 1, 2014; Ord. 2013-74s § 1 (part), 2013; Ord. 2012-69 § 1, 2012; Ord. 2011-78 § 1, 2011; Ord. 2010-79s § 1, 2010; Ord. 2009-87 § 1, 2009; Ord. 2008-83s2 § 6, 2008; Ord. 2007-99s § 1 (part), 2007; Ord. 2006-129s § 2, 2006; Ord. 2003-133 § 2, 2003; Ord. 2003-113 § 1 (part), 2003; Ord. 2000-51s2 § 1, 2000; Ord. 98-80 § 1, 1998; Ord. 97-93 § 1 (part), 1997; Ord. 95-128 § 3, 1995; Ord. 92-166S § 1 (part), 1992; Ord. 91-153S2 § 2 (part), 1991)