INTEGRATED WATER QUALITY MONITORING PROGRAM - BURGESS CREEK · Unitywater Burgess Creek REMP 2022 Annual Review (A7703347)

                                                                                           Burgess Creek
                                               Receiving Environment Monitoring Program
                                                                                   Annual Review 2022

5.7 Compliance of 2021 data with Water Quality Objectives
The 2021 water quality data measured for each parameter, during each sampling event
(month) and at each monitoring site was compared with the applicable water quality
objectives for a moderately disturbed Lowland Freshwater Creek. These limits are in Table
2. The percentage compliance of water quality parameters measured in 2021 with Burgess
Creek Water Quality Objectives are in Table 10.

Table 10. Percentage (%) compliance of water quality parameters measured in 2021 within
Burgess Creek water quality objectives.

   Water Quality
                          B1          B2           B3          B5          B6      B8         SW3
    Parameter

         pH               100         100         100         100         100      100         100

   Conductivity            0          100          0           0               0   100          0

     Ammonia               58          42          42          91          58       0          17

         NOx               0          100          0           0               0   100          0

     Phosphate             0          100          0           0               0   100          0

   Total Nitrogen          0           0           0           0               0    0           0
       Total
                           0          100          0           0               0   100          0
    Phosphorus
   Chlorophyll a          100         100         100         100         100      100         100
    Suspended
                           75          92          83          73          75      100         92
      Solids
       Overall             37          81          36          40          37       78         34

Overall, the water quality within Burgess Creek was 49% compliant with the prescribed
water quality objectives. This represents a slight increasing trend in overall water quality
compared to previous assessments. Consistent with previous years, no monitoring site was
100% compliant with the water quality objectives for Burgess Creek. The historical
percentage compliance at each monitoring site and overall compliance of Burgess Creek
with prescribed water objectives is provided in Figure 53.

Monitoring site SW3 was the site with the lowest percentage compliance of 34% with the
water quality objectives for Burgess Creek, similarly to 2018, 2019 and 2020 results.
Monitoring site B2 had the highest percentage compliance with the water quality objectives
for Burgess Creek (81% compliance). It should be noted low compliance of Conductivity
represents site proximity to the ocean, compared to typically fresh WQOs, and influences
overall compliance percentage.


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